Description:A MEDICAL DEVICE AND A SYRINGE ASSEMBLY
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is a patent of addition of Indian patent application Ser. No. 202041042900, filed on October 2, 2020, titled “A medical device and a pre-load locking arm for syringe barrel”. The entire contents of which are hereby incorporated by reference herein in their entirety.
TECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relates to the field of medical devices, particularly the present disclosure relates to a medical device and a syringe assembly, for the withdrawal of liquid mediums, blood, gases, and the creation of a vacuum within a chamber.
BACKGROUND
[0002] In general, syringe assemblies and Blood Collection Tubes (BCT) are known in the medical field for dispensing fluids, such as medication and collecting blood samples, respectively. Syringes have long been a fundamental tool in medical and laboratory applications, facilitating the precise administration of fluids, the collection of vital samples, and the creation of controlled environments. A conventional syringe or BCT typically includes a syringe barrel with an opening at one end and a plunger mechanism disposed through the other end. The plunger typically includes a plunger rod extending through the barrel, with a plunger head or stopper at the end of the plunger rod within the barrel, and with a finger flange at the other end of the plunger rod extending out of the barrel. In use, the plunger rod is retracted through the syringe barrel to aspirate or fill the syringe barrel with a fluid, such as a medication or blood, with the plunger rod extending out from the rear end of the syringe barrel.
[0003] For delivery of the medication to a patient, the opening of the syringe barrel is adapted for fluid communication with a patient, such as through a hypodermic needle fitted at the front end of the syringe barrel or through a luer-type fitting extending from the front end of the syringe barrel for attachment with a fluid line of a patient. Upon depressing of the plunger rod, the plunger rod and stopper travel through the syringe barrel, thereby forcing the contents of the syringe out through the opening at the front end for delivery to the patient. Such an operation is well known in the medical field, and medical practitioners have become well accustomed to the use of such common fluid delivery procedures through standard syringes. However, such syringes or BCTs may require additional effort, for instance, by using two hands for impelling the medication or blood to the syringe barrel.
[0004] However, conventional syringe designs typically necessitate a two-handed approach, often requiring healthcare professionals or laboratory personnel to utilize one hand for holding the plunger chamber and the other hand for operating the plunger shaft. This traditional method poses several challenges and inefficiencies, such as decreased dexterity, limited control, and the requirement for a second hand, which can be problematic in various practical scenarios. Further, conventional syringes are well known to be used in connection with a vial of a medication, where the user draws the fluid into the syringe immediately prior to injection and delivery of the fluid to the patient. In some instances, the syringes may be packaged as pre-filled devices, wherein the syringe is pre-filled with medication prior to being packaged and delivered to the end user. In this manner, there is no need for the user to fill the device prior to injection, thereby saving time for the end user and maintaining consistent volumes for delivery. Packaging of such pre-filled syringes, however, tends to be bulky. A pre-filled syringe is typically packaged with the opening at the front end of the barrel including a cap thereover and with the plunger rod retracted out of the back end of the syringe barrel, with the fluid pre-filled within the syringe barrel. Such packaging creates an elongated package that can be awkward for shipping and storage. Also, the space for storage of pre-filled syringes within controlled storage locations is often limited, thus there is a need for a syringe assembly that has a smaller packing footprint, to reduce the storage space required for containing the syringe. Also, in case of non-prefilled syringes, there should be controlled operation of the plunger for appropriate amount of medication or blood to be impelled into the syringe barrel.
[0005] However, the existing syringe techniques may have drawbacks such as, for instance, while drawing the blood from the arteries or veins it may be challenging to with-draw the blood in one hand. While drawing the blood from the arteries or veins it may be challenging to with draw right amount of blood in one hand as one hand is engaged in holding the patients hand or body to make sure the syringe does not dislocate from the center of the arteries to the side and causes pain on puncturing the walls and prevents the blood from entering the syringe. This is even more challenging when the veins or arteries are of small and curved. In addition, the extra withdrawn blood or medication may need to be ejected out before delivery, to ensure dispensing appropriate amount of blood or medication, which in turn causes a contamination in hygiene environment.
[0006] Therefore, there is need in the art for an improved medical device, to address at least the aforementioned issues in the prior art.
SUMMARY
[0007] This summary is provided to introduce a selection of concepts, in a simple manner, which is further described in the detailed description of the disclosure. This summary is neither intended to identify key or essential inventive concepts of the subject matter nor to determine the scope of the disclosure.
[0008] An aspect of the present disclosure provides a medical device. The medical device includes a syringe barrel. The syringe barrel includes a side wall with an inside surface defining a chamber for retaining at least one of a fluid and a vacuum. Further, the syringe barrel includes an open proximal end comprising finger flanges and a distal end comprising a distal wall with at least one of a passageway and an open passageway. Furthermore, the syringe barrel includes the finger flanges. The finger flanges include a bendably coupled unlock wing with a slidable slot on each of the finger flanges. Further, the finger flanges include a locking arm disposed within each of the finger flanges. The locking arm is configured to slide through the slidable slot of the unlock wing, when the unlock wing is in bent state. The locking arm includes a slip tip towards the chamber.
[0009] Further, the syringe barrel includes at least two semi-radial notches with an aligning slot disposed towards the open proximal end of the inside surface. Additionally, the syringe barrel includes a plunger rod body disposed within the chamber of the syringe barrel. Further, the plunger rod body includes a distal portion and a proximal portion. The proximal portion includes a finger grip, and the distal portion comprises a stopper configured to form at least one of a fluid-tight seal and a vacuum-tight seal with the inside surface of the chamber of the syringe barrel. Furthermore, the plunger rod body includes a plurality of elongated walls in a cruciform shape, wherein at least two opposite walls of the plurality of elongated walls comprises a plurality of notches. The plurality of notches is in slidably contact with the slip tip of the locking arm. Further, the plurality of notches is contact-free, and the plunger rod body is free to move within the chamber, upon the locking arm is slid into the unlock wing in the bent state.
[0010] Further, the medical device includes a needle assembly. The needle assembly includes an inner cylindrical slot. The inner cylindrical slot is a tapered cylinder slot towards a distal end. Further, the needle assembly includes an elongated needle coupled within the inner cylindrical slot. The needle includes at least one of one or more radial slots and one or more parallel slots to tight couple with the needle assembly. Furthermore, the needle assembly includes a horizontal slot at a proximal end the inner cylindrical slot, configured to create a pathway for liquid to flow into the elongated needle, with a diameter of the inner cylinder matching the at least one of a passageway and an open passageway of the syringe barrel. Additionally, the needle assembly includes thin arms connected by an arms ring and separated by thin arms slots. The thin arms cover the inner cylindrical slot. Further, the thin arms bulge outward when the elongated needle is firmly connected to the at least one of a passageway and an open passageway of the syringe barrel.
[0011] In another aspect, the present disclosure provides a syringe assembly. The syringe assembly includes a plunger and a small-scale syringe chamber, wherein the plunger is slidable within the small-scale syringe chamber. The plunger includes an elongated portion with notches aligned with an alignment slot in the small-scale syringe chamber, allowing the plunger to be slid into the small-scale syringe chamber until, the plunger reaches a distal end of the chamber. Further, the plunger is rotated until the elongated portion with notches aligns with a chamber stopper edge. Further, the syringe assembly includes a vertical finger wing fillets positioned below chamber finger wings, providing support, and preventing breakage of the chamber finger wings during push and pull actions of the syringe chamber and plunger.
[0012] To further clarify the advantages and features of the present disclosure, a more particular description of the disclosure will follow by reference to specific embodiments thereof, which are illustrated in the appended figures. It is to be appreciated that these figures depict only typical embodiments of the disclosure and are therefore not to be considered limiting in scope. The disclosure will be described and explained with additional specificity and detail with the appended figures.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The disclosure will be described and explained with additional specificity and detail with the accompanying figures in which:
[0014] FIGs. 1A and 1B illustrate a front view and an isometric view, of a medical device, respectively, in accordance with an embodiment of the present disclosure;
[0015] FIG. 1C illustrates a right-side view and a front view of medical device with a syringe needle, in accordance with an embodiment of the present disclosure;
[0016] FIG. 1D illustrates a sectional view of a small syringe with elongated portion with notches aligned to the chambers stopping edge, and disengaged from chambers stopping edge, in accordance with an embodiment of the present disclosure;
[0017] FIG. 1E illustrates a front view of a small syringe with elongated portion with notches disengaged from chambers stopping edge, and aligned to the chambers stopping edge, in accordance with an embodiment of the present disclosure;
[0018] FIG. 2 illustrates a side view of a rubber piston of a medical device, in accordance with an embodiment of the present disclosure;
[0019] FIG. 3A illustrates an isometric view of a syringe barrel, in accordance with an embodiment of the present disclosure;
[0020] FIGs. 3B and 3C illustrate a sectional view and a front view of a syringe barrel, respectively, in accordance with an embodiment of the present disclosure;
[0021] FIG. 3D illustrates a top view of a syringe barrel, in accordance with an embodiment of the present disclosure;
[0022] FIGs. 3E-3G illustrate front views of syringe barrel with open wing, open wing folded by 90 degrees, and open wing folded by more than 90 degrees, respectively, in accordance with an embodiment of the present disclosure;
[0023] FIG. 3H illustrates a top view of a small syringe barrel without unlocking wing, in accordance with an embodiment of the present disclosure;
[0024] FIG. 3I illustrates a sectional view, and a front view of a small syringe barrel without unlocking wing, in accordance with an embodiment of the present disclosure;
[0025] FIG. 3J illustrates an isometric sectional view of small syringe chamber without unlocking wing and a front view of small plunger, in accordance with an embodiment of the present disclosure;
[0026] FIG. 3K illustrates a right sectional view and a right view of a small syringe barrel without unlocking wing, in accordance with an embodiment of the present disclosure;
[0027] FIG. 3L illustrates a front sectional view of a small syringe chamber with needle, and a front view of a small syringe chamber with needle, in accordance with an embodiment of the present disclosure;
[0028] FIG. 3M illustrates an isometric sectional view and an isometric view of a small syringe barrel with a needle, in accordance with an embodiment of the present disclosure;
[0029] FIG. 3N illustrates a front sectional view and a front view of a small syringe barrel with a needle, in accordance with an embodiment of the present disclosure;
[0030] FIG. 3O illustrates an isometric sectional view section view of small syringe barrel without needle, and an isometric view of the needle, in accordance with an embodiment of the present disclosure;
[0031] FIG. 3P illustrates a top view of a syringe barrel without unlocking wing and a vertical finger wigs fillet, in accordance with an embodiment of the present disclosure;
[0032] FIG. 3Q illustrates a front sectional view and a front view of a syringe chamber without unlocking wing and vertical finger wigs fillet, in accordance with an embodiment of the present disclosure;
[0033] FIG. 3R illustrates an isometric view of a syringe barrel without unlocking wing and vertical finger wigs fillet, in accordance with an embodiment of the present disclosure;
[0034] FIG. 4A illustrate a front view, isometric view, and right-side view of a plunger rod, in accordance with an embodiment of the present disclosure;
[0035] FIG. 4B illustrate a sectional isometric view, and a top view of a plunger rod, in accordance with an embodiment of the present disclosure;
[0036] FIG. 5A illustrate a front view, an isometric view, and a top view of needle, in accordance with an embodiment of the present disclosure;
[0037] FIG. 5B illustrate a front view of multiple slots, a front view parallel slots, and isometric view parallel slots of a needle, in accordance with an embodiment of the present disclosure;
[0038] FIG. 5C illustrate a top view parallel slot, and a front view parallel slots tilted by 90 degrees, in accordance with an embodiment of the present disclosure;
[0039] FIG. 6A illustrate a front view, an isometric view, and a top view, of a needle assembly of a medical device, respectively, in accordance with an embodiment of the present disclosure;
[0040] FIG. 6B illustrate a front view of a three-dimensional (3D) representation a bulged thin arm of a needle assembly, in accordance with an embodiment of the present disclosure; and
[0041] FIG. 6C illustrate a front view of a top section of a needle assembly, in accordance with an embodiment of the present disclosure;
[0042] FIG. 7A illustrate a front view, a side view, and an isometric view of a syringe assembly with a pre-load locking arm, in accordance with an embodiment of the present disclosure;
[0043] FIG. 7B illustrates a front view, a side view, and an isometric view of a two-arm plunger rod for a syringe assembly with a pre-load locking arm, in accordance with an embodiment of the present disclosure;
[0044] FIG. 7C illustrates a top of a two-arm plunger rod, in accordance with an embodiment of the present disclosure;
[0045] FIG. 7D illustrate a front view, a side view, and an isometric view of a pre-load locking arm, in accordance with an embodiment of the present disclosure;
[0046] FIG. 7E illustrates a top of a pre-load locking arm, in accordance with an embodiment of the present disclosure; and
[0047] FIG. 8 illustrates a front view, and an isometric view of a medical device with a pre-load locking arm, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0048] For the purpose of promoting an understanding of the principles of the disclosure, reference will now be made to the embodiment illustrated in the figures and specific language will be used to describe them. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended. Such alterations and further modifications in the illustrated online platform, and such further applications of the principles of the disclosure as would normally occur to those skilled in the art are to be construed as being within the scope of the present disclosure.
[0049] The terms "comprise", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such a process or method. Similarly, one or more devices or subsystems or elements, structures, or components preceded by "comprises... a" does not, without more constraints, preclude the existence of other devices, subsystems, elements, structures, components, additional devices, additional subsystems, additional elements, additional structures, or additional components. Appearances of the phrase "in an embodiment", "in another embodiment" and similar language throughout this specification may, but not necessarily do, all refer to the same embodiment.
[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. The system, methods, and examples provided herein are only illustrative and not intended to be limiting.
[0051] In the following specification and the claims, reference will be made to a number of terms, which shall be defined to have the following meanings. The singular forms “a”, “an”, and “the” include plural references unless the context clearly dictates otherwise.
[0052] Embodiments of the present disclosure medical device and a syringe assembly, for the withdrawal of liquid mediums, blood, gases, and the creation of a vacuum within a chamber.
[0053] Referring now to the drawings, and more particularly to FIGs. 1 through FIG. 8, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments, and these embodiments are described in the context of the following exemplary system and/or method.
[0054] FIGs. 1A and 1B illustrate a front view and an isometric view, of a medical device 100, respectively, in accordance with an embodiment of the present disclosure. According to FIG. 1A, the medical device 100 includes, a syringe barrel 102, finger flanges 104, unlock wing 106, two semi-radial notches 108, a plunger rod body 110, stopper 112, a finger grip 114, a plurality of notches 116, a needle assembly 118, and an elongated needle 120. The syringe barrel 102 includes a side wall with an inside surface defining a chamber for retaining at least one of a fluid and a vacuum. Further, the syringe barrel 102 includes an open proximal end including finger flanges 104 and a distal end comprising a distal wall with at least one of a passageway and an open passageway.
[0055] In an embodiment, the finger flanges 104 include a bendably coupled unlock wing 106 with a slidable slot (not shown) on each of the finger flanges 104. Further, the finger flanges 104 include a locking arm disposed within each of the finger flanges 104. The locking arm may be configured to slide through the slidable slot of the unlock wing 106, when the unlock wing 106 is in bent state. The locking arm includes a slip tip towards the chamber. In an embodiment, the at least two semi-radial notches 108 with an aligning slot disposed towards the open proximal end of the inside surface.
[0056] In an embodiment, the medical device 100 includes the plunger rod body 110 disposed within the chamber of the syringe barrel 102. The plunger rod body 110 may include a distal portion and a proximal portion. The proximal portion may include a finger grip 114. The distal portion may include a stopper 112 and may be configured to form at least one of a fluid-tight seal and a vacuum-tight seal with the inside surface of the chamber of the syringe barrel 102. Further, the plunger rod body 110 may include a plurality of elongated walls in a cruciform shape. Further, the plunger rod body 110 may include at least two opposite walls of the plurality of elongated walls including a plurality of notches 116.
[0057] In an embodiment, the plurality of notches 116 may be in slidably contact with the slip tip of the locking arm. In an embodiment, the plurality of notches may be contact-free, and the plunger rod body is free to move within the chamber, upon the locking arm is slid into the unlock wing in the bent state.
[0058] In an embodiment, the medical device 100 may include the needle assembly 118. The needle assembly 118 may include an inner cylindrical slot. The inner cylindrical slot may be a tapered cylinder slot towards a distal end. Further, the needle assembly 118 may include an elongated needle 120 coupled within the inner cylindrical slot. The elongated needle 120 may include at least one of one or more radial slots and one or more parallel slots to tight couple with the needle assembly 118.
[0059] Further, the elongated needle 120 may include a horizontal slot at a proximal end the inner cylindrical slot. The elongated needle 120 may be configured to create a pathway for liquid to flow into the elongated needle 120. Further, the elongated needle 120 may include a diameter of the inner cylinder matching the at least one of a passageway and an open passageway of the syringe barrel 102. Furthermore, the elongated needle 120 may include a thin arm connected by an arms ring and separated by thin arms slots. Additionally, the elongated needle 120 may be configured to cover the inner cylindrical slot, and bulge (as shown in FIG. 1C) outward when the elongated needle 120 may be firmly connected to the at least one of a passageway and an open passageway of the syringe barrel 102.
[0060] FIG. 1D illustrates a sectional view of a syringe assembly 122 (i.e., small syringe) with elongated portion with notches aligned to the chambers stopping edge, and disengaged from chambers stopping edge, in accordance with an embodiment of the present disclosure. The syringe assembly 122 include a small plunger rod 124, which may be slidable placed into a small syringe chamber 126 by aligning the elongated portion with notches 128, into an alignment slot 130, and slid until it reached the distal end of the small syringe chamber 126, and rotated until the elongated portion with notches 128, may be aligned with a chamber stopper edge (not shown).
[0061] To draw the medicine in to the small syringe chamber 126 the plunger rod 124 is pulled towards the proximal end of the small syringe chamber 126 until the required volume is drawn into the chamber. When the plunger rod 124 is being pulled towards the proximal end of the small syringe chamber 126, the notches of the plunger rod 124 slides against the chamber stoppers edge, by pushing away the chambers stopper edge into a stopping arm u-cut. Upon sliding of every notch of the plunger rod 124, the chambers stoppers edge returns back into the slot in between the notches of the plunger with small stopping force. This small stopping force allows the user to stop at the required volume. Further, to plush out the drawn medicine, the plunger rod 124 may be rotated back by 90 degrees, which is the plunger rod 124 is rotated back until the elongated portion with notches disengages with the chambers stopper edge. At this point, the plunger rod 124 is easily slidable into the small syringe chamber 126.
[0062] FIG. 1E illustrates a front view of the small syringe 122 with elongated portion with notches disengaged from chambers stopping edge, and aligned to the chambers stopping edge, in accordance with an embodiment of the present disclosure. The small syringe 122 is also provided with vertical finger wing fillets 132 below chamber finger wings 134. The vertical finger wing fillets 132 may provide a support to the chamber finger wings 134 and prevents the breakage of the chamber finger wings 134, during push and pull action of the plunger rod 124 in the small syringe chamber 126.
[0063] FIG. 2 illustrates a side view of a rubber piston 112 of the medical device 100, in accordance with an embodiment of the present disclosure. The piston 112 may be slid over a piston holder (not shown) of the plunger rod 110. The plunger rod 110 may include four elongated portions, where two opposite elongated portions have a notch on the edge of the while other two plain elongated portion is plain, that is without notches. Each plunger notches have two edges that is the locking edge and the sliding edge. Now the piston 112 along with the plunger rod 110 may be plain elongated portion, which is aligned to the chamber stopping edge and the elongated portion with notches, is aligned to the aligning slot. This alignment provides an easy movement for the plunger rod 110 to slide into the chamber from the proximal end of the syringe chamber, until it reaches the distal end of the syringe camber and the plunger rod 110 is rotated to align the elongated portion with notches. This is to the chamber stopping edge and the plain elongated portion to the aligning slot.
[0064] FIG. 3A illustrates an isometric view of the syringe barrel 102, in accordance with an embodiment of the present disclosure. The syringe barrel 102 may include two unlocking wings 302 as part of the syringe barrel 102, with a thin flexible joint 328 between the stopping arms 306, and an opened two unlocking wings 302. The unlocking wings 302 are downward foldable by 180 degrees with the thin flexible joint 328, as a center of axis during push and pull of chamber finger wings 310, and the plunger rod 110. For example, one the syringe with unlocking arm is very easy to operate in withdrawing the exact marking levels in the syringe and easy to flush without extra cautious to unlock the plunger.
[0065] FIGs. 3B and 3C illustrate a sectional view and a front view of the syringe barrel 102, respectively, in accordance with an embodiment of the present disclosure. The syringe barrel 102 may include for example, four aligning radial notch 314 with two aligning slots 312 equally placed on the opposite sides of the inner surface of the syringe barrel 102 at a proximal end 304. The two aligning slots 312 provide alignment for the plunger rod 110, to align the elongated portion with notches to a chamber stopping edge 330 (shown in FIG. 3D). The bottom portion of the chamber stopping edge 330 may include a curved edge for easy sliding of the plunger rod 110, during the syringe loading with liquid, yet it stops at every plunger notch (not shown here) and can be easily sensed by the user as if the edge sliding on the steps. Whereas the top portion of the chamber stopping edge 330 has corner edge which easily stops the plunger accidentally sliding further down into the chamber.
[0066] FIGs. 3E-3G illustrate front views of syringe barrel with open wing, open wing folded by 90 degrees, and open wing folded by more than 90 degrees, respectively, in accordance with an embodiment of the present disclosure. FIG. 3F depicts that the unlocking wings 340 are folded by 90 degrees down wards towards the distal end 320 of the syringe barrel 102. FIG. 3G show when the unlocking wings 340 are folded by more than 90 degree and ready to use it for unlocking the plunger rod 110 to slide into the syringe barrel 102. The unlocking wings 340, length is more than the stopping arm 308. When the unlocking wings 340 may further be folded, the unlocking arm edge 326 slides along the outer surface of the plunger rod 110, and this uneven length of the of the unlocking wings 340, forces the stopping arm 308, to pull away and eventually the unlocking arm edge 326.
[0067] When the unlocking wings 340 may be completed folded downward by 180 degree the wings get attached at the bottom of the chamber finger wings 310. During this scenario, folding the unlocking wings 340 pulls the stopping arm 308 away from the syringe barrel 316 along with the stopping arm 308 and slides into the arm sliding slot 306, this movement releases the plunger rod 110, during unloading the syringe barrel 102, that is when the plunger rod 110 is sliding inward. The unlock wings 340 may also include the arm edge cover 304 in order to prevent hand gloves or the skin of the finger get stuck in between the unlocking wing edge 326, and the syringe barrel 102 outer surface.
[0068] FIG. 3H illustrates a top view of a small syringe barrel 126 without unlocking wing, in accordance with an embodiment of the present disclosure. The small syringe chamber 342 may include a short stopping arm 354 of very short length and its chambers stopping edge 348 may include a top curved edge (shown in FIG. 3I) and a curved edge 350 for two way sliding of the small plunger 124, during push and pull action of the syringe and plunger. The short stopping arm 354, is provided with u-cut slot around the short stopping arm 354, this u-cut slot allows the short stopping arm 354 to move away from the small syringe chamber 342. During pushing and pulling action of the small plunger 124 as it encounters with the plunger notches (not shown). The aligning radial notches 356, size is reduced for the small plunger 124 to rotate so that the elongated portion with notches, dis-engages with the chambers stopping edge 348. This enables the small plunger 124 to slide smoothly in and out of the small syringe chamber 342. It is also provided with the vertical finger wing fillets 346, below the chamber finger wings 344. This vertical finger wing fillet 346 provides a support to the chamber finger wings 344 and prevents the breakage of the chamber finger wings 344, during push and pull action of the syringe chamber and plunger. For example, the small syringe does not have unlocking to release the plunger to plush the liquid out, this because of the small diameter sized syringes like insulin syringe. Instead of the unlocking wing the plunger is rotated to get released from the locking arm and plunger is flushed for smooth sliding. It does not have needle part of barrel instead it has a separate needle with needle holder and also any general-purpose needle can be attached with different needle size. In another example, the needle is part of the syringe barrel, where the needle is uniquely designed with half radial cut to provide the grip between the needle and the syringe barrel. The diagonally placed aligning radial notches are of different size, this provides smooth and partial rotation of the plunger in one direction.
[0069] FIG. 3I illustrates a sectional view, and a front view of a small syringe barrel 126 without unlocking wing, in accordance with an embodiment of the present disclosure. The small syringe barrel/chamber 126 may mainly use for small diameter syringes such as insulin syringes and other small quantity medicine injectable syringes. The small syringe chamber 126 may include the short stopping arm 354, of very short length and the chambers stopping edge 348 may include a top curved edge 360, and the curved edge 362, for two way sliding of the small plunger 124, during push and pull action of the syringe and plunger. The short stopping arm 354 may be provided with u-cut slot around the short stopping arm 354. The u-cut slot allows the short stopping arm 354 to move away from the small syringe chamber 126, during pushing and pulling action of the small plunger 124, as it encounters with the plunger notches. The aligning radial notches 356 size may be reduced for the small plunger rod 124 (shown in FIG. 3J) to rotate so that the elongated portion with notches dis-engages with the chambers stopping edge 348. This enables the small plunger rod 124 to slide smoothly in and out of the small syringe chamber 126 (shown in FIG. 3K). It is also provided with the vertical finger wing fillets 346, below the chamber finger wings 344. The vertical finger wing fillet 346, provides a support to the chamber finger wings 344, and prevents the breakage of the chamber finger wings 344, during push and pull action of the syringe chamber and plunger.
[0070] FIG. 3L illustrates a front sectional view of a small syringe chamber 126 with a needle, and a front view of a small syringe chamber 126 with a needle, in accordance with an embodiment of the present disclosure. An exit cylinder 364 of the syringe chamber 126 may be manufactured along with the needle 366. The needle 366 may be placed in the exit cylinder 364, with an off set of small distance from the distal end of the syringe chamber 126. The small off set is filled by the material of the syringe chamber, while leaving the cylindrical volume space matching the inner diameter of the needle 366. The needle 366 may be provided with a semi radial slot 368 alternatively one below the other which enables the syringe chamber 126 material to fill in this slot during manufacturing. This forms a semi radial extrude 370 with in the semi radial slot 368 of the needle 366. The needle 366 includes an exit hole 372 at a proximal end. Further, the exit cylinder 364 includes vertical slots 374.
[0071] FIG. 3M illustrates an isometric sectional view and an isometric view of a small syringe barrel 126, with the needle 366, in accordance with an embodiment of the present disclosure. FIG. 3N illustrates a front sectional view and a front view of a small syringe barrel 126 with the needle 366, in accordance with an embodiment of the present disclosure. FIG. 3O illustrates an isometric sectional view section view of small syringe barrel 126 without needle, and an isometric view of the needle 366, in accordance with an embodiment of the present disclosure.
[0072] FIG. 3P illustrates a top view of the syringe barrel 126 without unlocking wing and a vertical finger wigs fillet, in accordance with an embodiment of the present disclosure. In this scenario, the syringe barrel may not include the unlocking arm and vertical finger wings fillets because the size of the syringe barrel is bigger than the smaller diameter syringe. This design saves extra unused material, which is irrelevant because the chamber finger wings are stronger due the bigger diameter of the syringe chamber. This design is used in higher volumes syringe chamber other than the insulin and low volume syringes chambers.
[0073] FIG. 3Q illustrates a front sectional view and a front view of a syringe chamber 126, without unlocking wing and vertical finger wigs fillet, in accordance with an embodiment of the present disclosure. FIG. 3R illustrates an isometric view of a syringe barrel without unlocking wing and vertical finger wigs fillet, in accordance with an embodiment of the present disclosure.
[0074] FIG. 4A illustrates a front view, isometric view, and right-side view of a plunger rod 110, in accordance with an embodiment of the present disclosure. The plunger rod 110 may include four elongated portions, where two opposite elongated portions has notches 404 on the edge of the while other two plain elongated portion is plain 406, that is without notches. Each plunger notches 404 may include two edges that is the locking edge 422, and the sliding edge 424 as shown in FIG. 4B. Now the piston 112 along with the plunger rod 110 may be plain elongated portion, which is aligned to the chamber stopping edge and the elongated portion with notches 404, is aligned to the aligning slot 312. This alignment provides an easy movement for the plunger rod 110 to slide into the syringe chamber from the proximal end of the syringe chamber, until it reaches the distal end of the syringe camber. The plunger rod 110 is rotated to align the elongated portion with notches. This is to the chamber stopping edge and the plain elongated portion to the aligning slot.
[0075] FIG. 5A illustrates a front view, an isometric view, and a top view of needle 120, in accordance with an embodiment of the present disclosure. FIG. 5B illustrates a front view of multiple slots, a front view parallel slots, and isometric view parallel slots of a needle 120, in accordance with an embodiment of the present disclosure. FIG. 5C illustrates a top view parallel slot, and a front view parallel slots tilted by 90 degrees of the needle 120, in accordance with an embodiment of the present disclosure. The injection needle 120 may include a radial slot 502, at a needle proximal end, this allows the syringe needle’ radial notch to occupy this space during the manufacturing to provides airtight and a strong grip between an inner cylinder and the injection needle 120. The radial slot 502 may be in multiples with edges tapered, which are made by cutting or grinding or spark erosion. This slot eliminates the need of binding chemical between the injection needle 120 and a syringe needle also provides the airtight and grip between the injection needle 120 and the syringe needle. The injection needles can also have parallel slot for airtight and grip in low pressure injections, this design saves lot of time in cutting or grinding radial slots or spark erosion. This slot eliminates the need of binding chemical between the needle and the needle holder to provide airtight and grip. The needle includes a tapered edge 508, and a channel 506.
[0076] FIG. 6A illustrates a front view, an isometric view, and a top view, of a needle assembly 118 of a medical device 100, respectively, in accordance with an embodiment of the present disclosure. FIG. 6B illustrates a front view of a three-dimensional (3D) representation a bulged thin arm of the needle assembly 118, in accordance with an embodiment of the present disclosure. FIG. 6C illustrates a front view of a top section of the needle assembly 118, in accordance with an embodiment of the present disclosure. A syringe needle 614 may include the injection needle 120 as a part of manufacturing. The syringe needle 614 may include a radial notch 608, which occupies the space of the injection needle’s 120 needle radial slot 622, during manufacturing, which provides airtight between the injection needle 120 and the inner cylinder 628. The end of the horizontal slot 602 may matches the needle proximal end.
[0077] Further, the inner cylinder 628 at its proximal end has horizontal slot 602 which provides the path for the liquid to flow into the injection needle 120. The inner cylinders 628 may include an outer diameter matching the exit cylinder of the syringe barrel 102. The inner cylinder 628 may completely occupies the space of the exit cylinder, which eliminates the air between the syringe needle 614, and syringe chamber 102 entering the syringe chamber 102 during syringe action. The syringe needle 614 may include a tapered cylinder slot 612 for the exit cylinder of the syringe barrel 102 to slide in firmly to provide airtight connection between the syringe needle 614, and the exit cylinder. Further, the length of the inner cylinder 628 may be more than the exit cylinder.
[0078] Additionally, the syringe needle 614 may include a tapered finger grip 620 wall with vertical groves 610 to provide grip for the user fingers during the syringe needle 614 connection and disconnection to the exit cylinder. The syringe needle 614 may include thin arms 606 connected by arms ring 604, and separated by thin arms slot 604A, which acts as a protection cover for the inner cylinder 628 form the user fingers from contamination. The height of the thin arms 606 may be more than the inner cylinder 628 and the inner cylinder 628 may bulge outward when the syringe needle is connected firmly into the exit cylinder, as shown in FIG. 6B. At this point, the inner cylinder 628 proximal end matches the syringe chambers bottom inner surface for complete ejection of liquid from the syringe chamber 102. In case of high-pressure medicine injection and in thin needles, the syringe needle 614 may include a radial cover notch 604B shown in FIG. 6C which cover the injection needle 120 top surface from outer diameter to inner diameter at needle proximal end. The radial cover notch 604B may prevents the liquid ejection vertical force on the injection needle 120 at a proximal needle end.
[0079] FIG. 7A illustrate a front view, a side view, and an isometric view of a syringe assembly 700 with a pre-load locking arm 704, in accordance with an embodiment of the present disclosure. FIG. 7B illustrates a front view, a side view, and an isometric view of a two-arm plunger rod 702 for the syringe assembly 700 with the pre-load locking arm 704, in accordance with an embodiment of the present disclosure. FIG. 7C illustrates a top of a two-arm plunger rod 702, in accordance with an embodiment of the present disclosure. The two-arm plunger rod 702 may include two elongated portions. The elongated portions include a left elongated portion 708 and a right elongated portion 710 opposite to each other with an offset equal to the thickness of the elongated portion 722 (shown in FIG. 7D) of the pre-load locking arm 704.
[0080] Further, the left elongated portion 708 and a right elongated portion 710 is in separation equal to the thickness of the elongated portion 722 of the preload locking arm 704. The elongated portions are attached with a circular finger grip 706 (shown in FIG. 7B) and a piston holder disc 716 of the two-arm plunger rod 702. The two-arm plunger rod 702 may include the circular finger grip 706 for push pull action for loading and unloading the syringe barrel 126 with a liquid or a gas. The two-arm plunger rod 702 may also include a piston holder 714 to hold the rubber piston. The two-arm plunger rod 702 may also include the piston holder disc 716 to push the piston during unloading of the syringe barrel 126 reservoir. A separation of the elongated portion 713 and the offset of the elongated portion of the two-arm plunger rod 702 may be provided for the preload locking arm 704 to slide in to and pro in linear motion during the syringe barrel 126 loading and unloading of fluid/vacuum.
[0081] FIG. 7D illustrate a front view, a side view, and an isometric view of a pre-load locking arm 704, in accordance with an embodiment of the present disclosure. FIG. 7E illustrates a top of a pre-load locking arm 704, in accordance with an embodiment of the present disclosure. The preloading locking arm 704 may be, for example, a level adjuster with in the syringe barrel 126 for a specific volume withdrawal by a plunger action. The preload locking arm 704 may include, for example, four elongated portions with two opposite elongated portion that include notches 730 and while the other two opposite elongated portion is plain 722. The elongated portion is between the preload shaft finger grip 718 and the bottom circular disc 726. The preload locking arm 704 may include a preload circular finger grip 718 for push pull action in volume control for the syringe barrel 126 loading by the two-arm plunger rod 702. The preload locking arm 704 may include a top circular disc 724 and a bottom circular disc 726. The top circular disc 724 may prevent the preload locking arm 704 from leaving the syringe barrel 126 during the push pull action of the syringe barrel 126 and the preload locking arm 704. Further the bottom circular disc 726 may pushe the two-arm plunger rod 702 during the unloading of the syringe barrel 126 reservoir.
[0082] Furthermore, a left offset slot 728A and a right offset slot 728B may be provided for the elongated portion 708 of the two-arm plunger rod 702 to slide in to and pro of linear motion during the syringe barrel 126 loading and unloading. The diameter of the elongated portion 720/722 and the top/bottom circular disc 724/726 of the preload locking arm 704 may be smaller than the inner diameter of the circular finger grip 706 of the two-arm plunger rod 702.
[0083] FIG. 8 illustrates a front view, and an isometric view of a medical device 800 with a pre-load locking arm 704, in accordance with an embodiment of the present disclosure. The pre-load locking arm 704 may be slidably disposed via the circular finger grip 706 of the two-arm plunger rod 702 in such way that the left offset elongated portion 708 and the right offset elongated portion 710 of the two-arm plunger rod 702 aligns with the left offset slot 728A and the right offset slot 728B of the pre-load locking arm 704. The pre-load locking arm 704 is slide until the bottom circular disc 726 of the pre-load locking arm 704 reaches the piston holder disc 716. The pre-load locking arm 704 and the two-arm plunger rod 702 together may be slidable placed in the syringe barrel 102 in such way that the elongated portion with notches of the pre-load locking arm 704 aligns with the locking arm 354 of the syringe barrel 126 and the plain elongated portion 716 of the preload shaft 140 aligns with the aligning slot 358 of the syringe barrel 126.
[0084] In order to load the syringe with liquid or gas, the preload shaft 140 is pulled away from the syringe barrel 126 until the bottom circular disc 720 reaches the required volume marking the syringe barrel 126 , during the pulling action of the preload shaft 140, the notches of the elongated portion of the preload shaft 140 slides over the slip tip 348 of the locking arm 354/316 with small stopping force with each notches 730 of the preload locking arm 704. This stopping force enables the user to stop the preload locking arm 704 at the required level. At this point the preload locking arm 704 may be stopped from sliding into the chamber by the stooping edge 732 of the notch 730 of the elongated portion 720. Further the two-plunger rod 702 may be pulled by pushing the preload locking arm 704 until the circular finger grip 706 reaches the preload shaft finger grip 718.
[0085] The unloading of the syringe barrel 102 is performed by two ways. In the first option unloading the syringe barrel 102: locking arm 316 may be pulled away from the notches 730 by the unlocking wing 302 for the syringe barrel 102 and the preload shaft 140 may be pushed while pulling the finger flanges 104 of the syringe barrel 102 until all the liquid or gas is expelled away from the syringe barrel 102. In the second option: the preload locking arm 704 may be rotated until the notches 730 of the elongated portion 720 disengages with the locking arm 316, and the preload locking arm 704 may be pushed by pulling the chamber finger wings 344 of the syringe barrel 126 until all the liquid or gas is expelled.
[0086] A description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention. When a single device or article is described herein, it will be apparent that more than one device/article (whether or not they cooperate) may be used in place of a single device/article. Similarly, where more than one device or article is described herein (whether or not they cooperate), it will be apparent that a single device/article may be used in place of the more than one device or article, or a different number of devices/articles may be used instead of the shown number of devices or programs. The functionality and/or the features of a device may be alternatively embodied by one or more other devices which are not explicitly described as having such functionality/features. Thus, other embodiments of the invention need not include the device itself.
[0087] The illustrated steps are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments. Also, the words "comprising," "having," "containing," and "including," and other similar forms are intended to be equivalent in meaning and be open-ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise.
[0088] Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application based here on. Accordingly, the embodiments of the present invention are intended to be illustrative, but not limited, of the scope of the invention, which is outlined in the following claims.
, Claims:CLAIMS
We claim:
1. A medical device (100) comprising:
a syringe barrel (102) comprised of:
a side wall with an inside surface defining a chamber for retaining at least one of a fluid and a vacuum,
an open proximal end comprising finger flanges (104) and a distal end comprising a distal wall with at least one of a passageway and an open passageway;
the finger flanges (104) comprise:
a bendably coupled unlock wing (106) with a slidable slot on each of the finger flanges (104);
a locking arm disposed within each of the finger flanges (104), wherein the locking arm is configured to slide through the slidable slot of the unlock wing (106), when the unlock wing (106) is in bent state, wherein the locking arm comprises a slip tip towards the chamber; and
at least two semi-radial notches (108) with an aligning slot disposed towards the open proximal end of the inside surface;
a plunger rod body (110) disposed within the chamber of the syringe barrel (102) comprising:
a distal portion and a proximal portion, wherein the proximal portion comprises a finger grip (114), and the distal portion comprises a stopper (112) configured to form at least one of a fluid-tight seal and a vacuum-tight seal with the inside surface of the chamber of the syringe barrel (102);
a plurality of elongated walls in a cruciform shape, wherein at least two opposite walls of the plurality of elongated walls comprises a plurality of notches (116),
wherein the plurality of notches (116) is in slidably contact with the slip tip of the locking arm; and
wherein the plurality of notches is contact-free, and the plunger rod body is free to move within the chamber, upon the locking arm is slid into the unlock wing in the bent state; and
a needle assembly (118) comprising:
an inner cylindrical slot, wherein the inner cylindrical slot is a tapered cylinder slot towards a distal end;
an elongated needle (120) coupled within the inner cylindrical slot, wherein the elongated needle (120) comprises at least one of one or more radial slots and one or more parallel slots to tight couple with the needle assembly (118);
a horizontal slot at a proximal end the inner cylindrical slot, configured to create a pathway for liquid to flow into the elongated needle (120), with a diameter of the inner cylinder matching the at least one of a passageway and an open passageway of the syringe barrel (102); and
a thin arms connected by an arms ring and separated by thin arms slots, configured to:
cover the inner cylindrical slot; and
bulge outward when the elongated needle (120) is firmly connected to the at least one of a passageway and an open passageway of the syringe barrel (102).
2. The medical device (100) as claimed in claim 1, wherein the unlock wings comprises arm edge cover.
3. The medical device (100) as claimed in claim 1, wherein the at least two semi-radial notches align the plunger rod body (110), wherein the plurality of notches is in contact with the slip tip of the locking arm, when the plunger rod body (110) is aligned.
4. The medical device (100) as claimed in claim 1, wherein each of the plurality of notches comprises at least two edges, wherein the at least two edges comprises a locking edge and a sliding edge, wherein the sliding edge slides with the slip tip of the locking arm, during a loading of the chamber, and wherein the locking edge locks with the slip tip of the locking arm.
5. The medical device (100) as claimed in claim 1, wherein the unlock wing is bendably coupled to the finger flanges through a flexible joint.
6. The medical device (100) as claimed in claim 1, wherein the elongated needle includes a tapered finger grip wall with vertical grooves configured to provide grip for user fingers during the connection and disconnection of the elongated needle, towards the distal end.
7. The medical device (100) as claimed in claim 1, wherein the elongated needle comprises a radial cover notch at the proximal end configured to cover the top surface of the elongated needle from an outer diameter to an inner diameter at the proximal end.
8. The medical device (100) as claimed in claim 1, further comprises a two-arm plunger rod for a preload locking arm 704 to slide into the syringe barrel (102) for loading and unloading of at least one of the fluid and the vacuum.
9. A syringe assembly (122) comprising:
a plunger (124) and a small-scale syringe chamber (126), wherein the plunger is slidable within the small-scale syringe chamber (126), wherein the plunger comprises an elongated portion with notches aligned with an alignment slot in the small-scale syringe chamber, allowing the plunger to be slid into the small-scale syringe chamber until, the plunger reaches a distal end of the chamber, wherein the plunger is rotated until the elongated portion with notches aligns with a chamber stopper edge; and
a vertical finger wing fillets positioned below chamber finger wings, providing support, and preventing breakage of the chamber finger wings during push and pull actions of the syringe chamber and plunger.
10. The syringe assembly (122) as claimed in claim 9, wherein, to draw medicine into the small-scale syringe chamber, the plunger is pulled towards a proximal end of the small-scale syringe chamber until a desired volume of medicine is drawn into the small-scale syringe chamber.
11. The syringe assembly (122) as claimed in claim 10, wherein, during the pulling motion of the plunger, the notches of the plunger slide against the chamber stopper edge, causing the chamber stopper edge to be pushed into a u-cut shaped locking arm, and after each notch passes, the chamber stopper edge returns with a small stopping force, allowing the user to stop at the desired volume.
12. The syringe assembly (122) as claimed in claim 9, wherein the small-scale syringe chamber (126) comprises a needle positioned with a small offset from a distal end of the syringe chamber (126), allowing the material of the syringe chamber to fill this offset space and create a cylindrical volume to matche an inner diameter of the needle.
13. The syringe assembly (122) as claimed in claim 12, wherein the syringe chamber comprises an exit cylinder as an integral component manufactured alongside the needle, wherein the needle is precisely positioned within the exit cylinder with a small offset from a distal end of the syringe chamber, wherein the small offset is filled by a material of the syringe chamber to create a cylindrical volume space for matching the inner diameter of the needle.
14. The syringe assembly (122) as claimed in claim 12 wherein the needle is coupled to the syringe barrel, comprising a distinctive half-radial cut for grip between the needle and the syringe barrel, and wherein the syringe barrel comprising diagonally placed aligning radial notches, each of varying sizes, facilitates smooth and controlled partial rotation of the plunger in a single direction.
15. The syringe assembly (122) as claimed in claim 9, further comprises a two-arm plunger rod for a preload locking arm 704 to slide into the syringe chamber (126) for loading and unloading of at least one of the fluid and the vacuum.

Dated this 19th day of November 2023

Sanath M V
Patent Agent (IN/PA- 5004)
Agent for the Applicant