Claims:WE CLAIM:
1. A medical device (100) comprising:
a syringe barrel (102) having 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 including a distal wall having at least one of a passageway (106) therethrough in fluid communication with the chamber and an open passageway (232) therethrough in vacuum communication with the chamber;
an elongated plunger rods (108) disposed within two sides of the syringe barrel (102) comprising a distal portion and a proximal portion, or a plunger rod body (110) coupled to elongated plunger rods (108) and extending from the distal portion to the proximal portion, the elongated plunger rods (108) or the plunger rod body (110) includes a contacting surface comprising at least one of inner grooves and ridges (112), and a stopper (114) disposed at the distal portion of the elongated plunger rods (108) for forming at least one of a fluid-tight seal and a vacuum-tight seal with the inside surface of the syringe barrel (102);
at least two locking element (116) pressably mounted to the proximal end of the syringe barrel (102) and in between each finger flange (104), or a semi-radial locking element (220) within the distal end in the chamber of the syringe barrel (102), the at least two locking elements (116) comprising a slip tip for sliding engagement or locking engagement of the elongated plunger rods (108) or the plunger rod body (110) via the contacting surface comprising at least one inner grooves or ridges (112), the semi-radial locking element (220) comprising a notches for sliding engagement or locking engagement of the elongated plunger rods (108) or the plunger rod body (110) via the contacting surface comprising the ridges or inner grooves (112); and
a plunger arm (118) comprising a cylindrical ring (120) at a distal portion, is slidably mounted on an external surface of the syringe barrel (102), the plunger arm (118) comprising a proximal portion is connected to the proximal end of the elongated plunger rods (108) for sliding the elongated plunger rods (108), when proximally force on the cylindrical ring (120) and simultaneously distally force is applied on the finger flange (104), to impel the at least one of fluid and vacuum into the chamber of the syringe barrel (102).
2. The medical device (100) as claimed in claim 1, wherein the elongated plunger rods (108) is mounted to the plunger arm (118) such that overall length of the elongated plunger rods (108) is adjustable while sliding the plunger arm (118), to a plurality of different locked lengths to each of inner grooves or ridges (112) using the at least two locking element (116) or a semi-radial locking element (220), thereby permitting varying amounts of at least one of the fluid and vacuum to be impelled or expelled in chamber of the syringe barrel (102) corresponding to the plurality of locked lengths.
3. The medical device (100) as claimed in claim 1, wherein the elongated plunger rods (108) comprising the plunger rod body (110) comprises at least two opposite internal arms to accommodate the at least one inner grooves or ridges (112) at equal intervals, wherein the equal intervals of the ridges is accommodate alternatively in the opposite internal arm of the plunger body (110) for uninterrupted retraction from the ridges (112).
4. The medical device (100) as claimed in claim 1, wherein the elongated plunger rods (108) are moving over the internal surface of chamber of the syringe barrel (102) up to the proximal end of the chamber, and the plunger arm (118) is configured to move over the external surface of the syringe barrel up to finger flanges (104) or the at least two locking elements (116).
5. The medical device (100) as claimed in claim 1, wherein, upon application of a proximally directed force on the cylindrical ring (120) of the plunger arm (118) and simultaneous distally directed force on the finger flange (104) of the syringe barrel (102), to impel at least one of fluid and vacuum within the chamber of the syringe barrel (102), wherein while impelling at least one of fluid and vacuum, the inner grooves or the ridges (112) on the elongated plunger rods (108) is slidably engaged as locking engagement with the at least two locking elements (116) or the semi-radial locking element (220), to precisely control permitting of the varying amounts of at least one of the fluid and vacuum into the chamber of the syringe barrel (102).
6. The medical device (100) as claimed in claim 1, wherein the elongated plunger rods (108) is moveable in the distal direction to cause the stopper (114) to expel the at least one of fluid and vacuum, while the at least two locking elements (116) remains pressed or the semi-radial locking element (220) remains stationary, for the movement of the elongated plunger rods (108) or the plunger rod body (110) contacting surface comprising at least one inner grooves or ridges (112), wherein upon application of a distally directed force on the elongated plunger rods (108), the elongated plunger rods (108) moves in the distal direction to provide the trigger force and causes the at least two locking element (116) or the semi-radial locking element (220) to slidably engage at least one of the inner groves or the ridges (112) respectively, to expel the at least one of fluid and vacuum from the chamber of the syringe barrel (102).
7. The medical device (100) as claimed in claim 1, wherein the elongated plunger rods (108) are separated apart to accommodate finger of a user while applying proximally directed force on the cylindrical ring (120) of the plunger arm (118).
8. The medical device (100) as claimed in claim 1, wherein the sliding engagement of the elongated plunger rods (108) or the plunger rod body (110) via the contacting surface comprising the at least one of inner grooves and ridges (112) is for impelling the at least one of fluid and vacuum, and wherein the locking engagement of the elongated plunger rods (108) or the plunger rod body (110) via the contacting surface comprising the at least one of inner grooves or ridges (112) is for expelling the at least one of fluid and vacuum.
9. A plunger arm (118) for a syringe barrel (102) comprising:
a cylindrical ring (120) at a distal portion of the plunger arm (118), the plunger arm (118) is slidably mounted on an external surface of the syringe barrel (102), the plunger arm (118) comprising a proximal portion is connected to a proximal end of an elongated plunger rods (108) for sliding the elongated plunger rods (108) when proximally force is applied on the cylindrical ring (120) and distally force on a finger flange (104) of the syringe barrel (102) to impel at least one of a fluid and a vacuum, wherein the elongated plunger rods (108) are disposed within two sides of the syringe barrel (102) comprising a distal portion and a proximal portion, wherein the elongated plunger rods (108) are separated apart to accommodate finger of a user while proximally directed force on the cylindrical ring (120) of the plunger arm (118); and
at least two locking element (116) pressably mounted to a proximal end of the syringe barrel (102) and in between each finger flange (104), or a semi-radial locking element (220) within the distal end in the chamber of the syringe barrel (102), the at least two locking elements (116) comprising a slip tip for sliding engagement or locking engagement of the elongated plunger rods (108) or a plunger rod body (110) via the contacting surface comprising at least one of inner grooves and ridges (112), the semi-radial locking element (220) comprising a notches for sliding engagement or locking engagement of the elongated plunger rods (108) via the contacting surface comprising the at least one of inner grooves and ridges (112).
, Description:TECHNICAL FIELD
[0001] The present subject matter relates generally to medical devices. More particularly, but not exclusively, discloses a medical device and a plunger arm for syringe barrel, which can be used by one-hand technique for impelling at least one of a fluid and vacuum into a chamber of a syringe barrel.
BACKGROUND
[0002] In general, syringe assemblies and Blood Collection Tubes (BCT) are well known in the medical field for dispensing fluids, such as medication and collecting blood samples, respectively. 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. 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.
[0003] 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.
[0004] Therefore, 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 centre 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.
SUMMARY
[0005] Disclosed herein is a medical device comprising a syringe barrel having 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 and a distal end including a distal wall having at least one of a passageway therethrough in fluid communication with the chamber and an open passageway therethrough in vacuum communication with the chamber. The medical device further includes an elongated plunger rods disposed within two sides of the syringe barrel comprising a distal portion and a proximal portion, or a plunger rod body coupled to elongated plunger rods and extending from the distal portion to the proximal portion, the elongated plunger rods or the plunger rod body includes a contacting surface comprising at least one of inner grooves and ridges, and a stopper disposed at the distal portion of the elongated plunger rods for forming at least one of a fluid-tight seal and a vacuum-tight seal with the inside surface of the syringe barrel. Further, the medical device includes at least two locking element pressably mounted to the proximal end of the syringe barrel and in between each finger flange, or a semi-radial locking element within the distal end in the chamber of the syringe barrel, the at least two locking elements comprising a slip tip for sliding engagement or locking engagement of the elongated plunger rods or the plunger rod body via the contacting surface comprising at least one inner grooves or ridges, the semi-radial locking element comprising a notches for sliding engagement or locking engagement of the elongated plunger rods or the plunger rod body via the contacting surface comprising the ridges or inner grooves. Furthermore, the medical device includes a plunger arm comprising a cylindrical ring at a distal portion, is slidably mounted on an external surface of the syringe barrel, the plunger arm comprising a proximal portion is connected to the proximal end of the elongated plunger rods for sliding the elongated plunger rods, when proximally force on the cylindrical ring and simultaneously distally force is applied on the finger flange, to impel the at least one of fluid and vacuum into the chamber of the syringe barrel.
[0006] Further, the present disclosure includes a plunger arm for a syringe barrel. The plunger arm includes a cylindrical ring at a distal portion of the plunger arm, the plunger arm is slidably mounted on an external surface of the syringe barrel, the plunger arm comprising a proximal portion is connected to a proximal end of an elongated plunger rods for sliding the elongated plunger rods when proximally force is applied on the cylindrical ring and distally force on a finger flange of the syringe barrel to impel at least one of a fluid and a vacuum, wherein the elongated plunger rods are disposed within two sides of the syringe barrel comprising a distal portion and a proximal portion, wherein the elongated plunger rods are separated apart to accommodate finger of a user while proximally directed force on the cylindrical ring of the plunger arm. Further, the plunger arm includes at least two locking element pressably mounted to a proximal end of the syringe barrel and in between each finger flange, or a semi-radial locking element within the distal end in the chamber of the syringe barrel, the at least two locking elements comprising a slip tip for sliding engagement or locking engagement of the elongated plunger rods or a plunger rod body via the contacting surface comprising at least one of inner grooves and ridges, the semi-radial locking element comprising a notches for sliding engagement or locking engagement of the elongated plunger rods via the contacting surface comprising the at least one of inner grooves and ridges.
[0007] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DIAGRAMS
[0008] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and with reference to the accompanying figures, in which:
[0009] FIG. 1 illustrates a perspective view of a medical device in a half-compressed position, in accordance with some embodiments of the present disclosure;
[0010] FIG. 2A illustrates a cross-sectional view of a stopper, in accordance with some embodiments of the present disclosure;
[0011] FIG. 2B illustrates a cross-sectional view of a plunger rod body when combined with elongated plunger rods, in accordance with some embodiments of the present disclosure;
[0012] FIG. 2C illustrates a cross-sectional view of a plunger arm, in accordance with some embodiments of the present disclosure;
[0013] FIG. 2D illustrates a cross-sectional view of syringe barrel, in accordance with some embodiments of present disclosure;
[0014] FIG. 2E illustrates an enlarged view of FIG. 1, in accordance with some embodiments of present disclosure;
[0015] FIG. 3A illustrates a perspective view of medical device comprising a semi-radial locking element and an enlarged view of syringe barrel comprising the semi-radial locking element respectively, in accordance with some embodiments of present disclosure;
[0016] FIG. 3B illustrates an enlarged view of FIG. 3A, in accordance with some embodiments of present disclosure;
[0017] FIG. 4A illustrates a perspective view of the medical device with elongated plunger rods and without plunger rod body, in accordance with some embodiments of present disclosure;
[0018] FIG. 4B illustrates a cross-sectional view of the elongated plunger rods, in accordance with some embodiments of present disclosure;
[0019] FIG. 4C illustrates a cross-sectional view of the plunger arm of FIG. 4A, in accordance with some embodiments of present disclosure;
[0020] FIG. 4D illustrates a cross-sectional view of the syringe barrel and an enlarged view of syringe barrel comprising the semi-radial locking elements respectively, of FIG. 4A, in accordance with some embodiments of present disclosure;
[0021] FIG. 4E illustrates an enlarged view of FIG. 4A, in accordance with some embodiments of present disclosure;
[0022] FIG. 5A illustrates a perspective view of the medical device with elongated plunger rods and open passageway, and without plunger rod body, in accordance with some embodiments of present disclosure;
[0023] FIG. 5B illustrates a cross-sectional view of a syringe barrel of FIG. 5A, in accordance with some embodiments of present disclosure; and
[0024] FIG. 5C illustrates an enlarged view of FIG. 5A, in accordance with some embodiments of present disclosure.
[0025] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter. Similarly, it will be appreciated that any flow charts, flow diagrams, state transition diagrams, pseudo code, and the like represent various processes which may be substantially represented in computer readable medium and executed by a computer or processor, whether or not such computer or processor is explicitly shown.
DETAILED DESCRIPTION
[0026] In the present document, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
[0027] While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.
[0028] The terms “comprises”, “comprising”, “includes” or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device or method that includes a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or method.
[0029] Disclosed herein is a medical device and a plunger arm for a syringe barrel. The present disclosure is of syringe for impelling fluid such as liquid medium, blood, gasses or creating vacuum into the chamber of syringe barrel. The impelling is performed by applying proximally force on a cylindrical ring of a plunger arm in two fingers and by holding/applying distally force on the finger flange on the chamber with one finger. The fluid or vacuum in the chamber is expelled from the chamber by pushing the elongated plunger rods or plunger rod body and by simultaneously pulling the finger flange in two fingers. Further, a precise control over impelling of liquid is achieved based on locking elements disposed on the syringe barrel. Further, prevention of accidental ejection of the liquid out of the chamber is achieved by using the locking elements disposed on the syringe barrel.
[0030] 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. In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0031] FIG. 1 illustrates a perspective view of a medical device in a half-compressed position, in accordance with some embodiments of the present disclosure.
[0032] The medical device 100 in the form of a syringe includes a syringe barrel 102 and an elongated plunger rod 108. The syringe barrel 102 includes a finger flange 104 at a proximal end of the syringe barrel 102, which provides the practitioner or any user a gripping surface for the syringe barrel 102 when a fluid or a vacuum is being impelled or expelled from the syringe. The syringe barrel 102 includes a distal end and a proximal end, and a cylindrical inside surface, which defines a chamber in which the fluid or vacuum may be held. The fluid can be at least one of, but not limited to, medication blood, water, any liquid medium, and so on. The syringe barrel 102 further includes a distal wall having a passageway 106 or opening such as open passageway, in fluid communication or vacuum communication respectively, with the chamber. The passageway 106 can also include a tip or reduced diameter portion.
[0033] In an embodiment, the elongated plunger rods 108 includes a distal portion and a proximal portion which are assembled, as will be described in more detail below. The elongated plunger rods 108 may be disposed within the chamber for sliding sealed engagement with the inside surface of the syringe barrel 102. The elongated plunger rods 108 comprising the plunger rod body 110 comprises at least two opposite internal arms to accommodate the at least one inner grooves or ridges 112 at equal intervals, wherein the equal intervals of the ridges is accommodate alternatively in the opposite internal arm of the plunger body 110 for uninterrupted retraction from the ridges 112. A stopper 114 may connected to the distal portion of the elongated plunger rod 108. It will be understood that the stopper 114 may be integral with the elongated plunger rod 108, or it may be provided as a separate component that is releasably mounted to the elongated plunger rod 108. The stopper 114 may also include corresponding stopper holder, permitting the stopper to be assembled to the elongated plunger rod 108 using a twisting motion. The stopper 114 can also include a sealing element, such as ribs forming a seal with the inside surface of the syringe barrel 102. The proximal portion of the elongated plunger rod 108 includes a thumb press. The thumb press may have a textured surface, which may provide an enhanced surface for a user of the syringe to exert distally directed force on the elongated plunger rod 108 to advance the elongated plunger rod 108 into the syringe barrel 102 and expel fluid or vacuum from the syringe. The elongated plunger rods 108 are moving over the internal surface of chamber of the syringe barrel 102 up to the proximal end of the chamber, and the plunger arm 118 is configured to move over the external surface of the syringe barrel up to finger flanges 104 or the at least two locking elements 116. Upon application of a proximally directed force on the cylindrical ring 120 of the plunger arm 118 and simultaneous distally directed force on the finger flange 104 of the syringe barrel 102, to impel at least one of fluid and vacuum within the chamber of the syringe barrel 102, wherein while impelling at least one of fluid and vacuum, the inner grooves or the ridges 112 on the elongated plunger rods 108 is slidably engaged as locking engagement with the at least two locking elements 116 or the semi-radial locking element, to precisely control permitting of the varying amounts of at least one of the fluid and vacuum into the chamber of the syringe barrel 102.
[0034] The elongated plunger rods 108 is moveable in the distal direction to cause the stopper 114 to expel the at least one of fluid and vacuum, while the at least two locking elements 116 remains pressed or the semi-radial locking element 220 remains stationary, for the movement of the elongated plunger rods 108 or the plunger rod body 110 contacting surface comprising at least one inner grooves or ridges 112, wherein upon application of a distally directed force on the elongated plunger rods 108, the elongated plunger rods 108 moves in the distal direction to provide the trigger force and causes the at least two locking element 116 or the semi-radial locking element to slidably engage at least one of the inner groves or the ridges 112 respectively, to expel the at least one of fluid and vacuum from the chamber of the syringe barrel 102. The sliding engagement of the elongated plunger rods 108 or the plunger rod body 110 via the contacting surface comprising the at least one of inner grooves and ridges 112 is for impelling the at least one of fluid and vacuum, and wherein the locking engagement of the elongated plunger rods 108 or the plunger rod body 110 via the contacting surface comprising the at least one of inner grooves or ridges 112 is for expelling the at least one of fluid and vacuum.
[0035] In an embodiment, the syringe barrel 102 may include at least two locking element 116. The at least two locking element 116 is pressably mounted to the proximal end of the syringe barrel 102 and in between each finger flange 104. Each finger flange 104 is divided and provides a way for each locking element 116 to be placed in the space between the divided finger flange 104. In some embodiments, the syringe barrel 102 may not include at least two locking element 116, instead may include a semi-radial locking element 220 within the distal end in the chamber of the syringe barrel 102. Further, the at least two locking elements 116 may include a slip tip for sliding engagement or locking engagement of the elongated plunger rods 108. The elongated plunger rods 108 is mounted to the plunger arm 118 such that overall length of the elongated plunger rods 108 is adjustable while sliding the plunger arm 118, to a plurality of different locked lengths to each of inner grooves or ridges 112 using the at least two locking element 116 or a semi-radial locking element, thereby permitting varying amounts of at least one of the fluid and vacuum to be impelled or expelled in chamber of the syringe barrel 102 corresponding to the plurality of locked lengths.
[0036] In an embodiment, the elongated plunger rods 108 can be separated within the chamber or may include a plunger rod body 110. When the plunger rod body 110 is attached to the elongated plunger rods 108, then the share of the plunger rods along with the plunger rod body 110 can be “+” from top view and “V” from side view. In alternative embodiments, the plunger rod body 110 may be shaped in the form of a square, rectangle, triangle of any other shape suitable for the elongated plunger rods 108. In another instance, when the elongated plunger rods 108 is separated apart and without inclusion of the plunger rod body 110, then the elongated plunger rods 108 may look like two rods within the internal surface of the chamber of the syringe barrel 102. Further, the elongated plunger rods 108 or the plunger rod body 110 may include a contacting surface which in turn includes at least one inner grooves or ridges 112 or both. The inner grooves or ridges 112 on the elongated plunger rods 108 or the plunger rod body 110 may be in contact with the locking element 116 for sliding engagement or locking engagement with the elongated plunger rods 108 or the plunger rod body 110. The sliding engagement of the elongated plunger rods 108 or the plunger rod body 110 via the contacting surface comprising the at least one of inner grooves and ridges 112 is for impelling the at least one of fluid and vacuum. Further, the locking engagement of the elongated plunger rods 108 or the plunger rod body 110 via the contacting surface comprising the at least one of inner grooves or ridges 112 is for expelling the at least one of fluid and vacuum. In case of the semi-radial locking element 220, the semi-radial locking element 220 may include plurality of notches for sliding engagement or locking engagement of the elongated plunger rods 108 or the plunger rod body 110 via the contacting surface comprising the ridges or inner grooves 112.
[0037] In an embodiment, the medical device 100 includes a plunger arm 118 comprising a cylindrical ring 120 at a distal portion of the plunger arm 118. The plunger arm 118 is configured to slide over the syringe barrel 102. The plunger arm 118 is slidably mounted on an external surface of the syringe barrel 102. Further the plunger arm 118 includes a proximal portion, which is connected to the proximal end of the elongated plunger rods 108 for sliding the elongated plunger rods 108. In an embodiment, when a proximally force is applied on the cylindrical ring 120 and simultaneously distally force is applied on the finger flange 104, the at least one of fluid and vacuum is impelled into the chamber of the syringe barrel 102.
[0038] FIGs. 2A-2E show a cross sectional view of the medical device 100 depicted in FIG. 1.
[0039] The plunger rod body 110 combined with the elongated plunger rods 108 may have connected four perpendicular internal arms as depicted in FIG. 2B (only two is depicted in FIG. 2B). The plunger rod body 110 may include a thumb press 204 (i.e. for finger grip) in proximal portion of the plunger rod body 110. Further, a stoper holder 202 is disposed in the distal portion of the piston rod body 110 to hold the stopper 114 as depicted in FIG. 2A. The stoper holder 202 may also include threads for holding the stopper 114. The inner groves 112 or ridges 112 are disposed at equal internal for a slide or locking engagement with the locking elements 116 during a volumetric measurement of the fluids impelling into the chamber of the syringe barrel 102.The inner groves 112 or ridges 112 are disposed on the opposite sides of the internal arms. The thumb press 204 may further have two semi-circular holes 206 to accommodate and lock the plunger arm 118.
[0040] The plunger rod body 110 combined with the elongated plunger arms 108 is inserted into a chamber 214 as depicted in FIG. 2D, of the syringe barrel 102, and the inner groves 112 or ridges 112 of the plunger rod body 110 combined with the elongated plunger arms 108 is aligned along the locking elements 116 disposed in space between each finger flange 104. The medical device 100 with the plunger rod body 110 combined with the elongated plunger arms 108 assembly is inserted externally with the plunger arm 118, through a plunger arm shaft hole 208, as depicted in FG. 2C. The plunger arm 118 may include a cylindrical ring 120 in the distal portion and the plunger arm 118 is extended with extension of two opposite semi-circular shaped rods 210, which is of equal length with the plunger rod body 110 or the elongated plunger rods 108. The proximal portion of the plunger arm 118 may have a locking edge 212, as depicted in FIG. 2C, for locking on to the thumb press 204 of the plunger rod body 110.
[0041] Further, as depicted in FIG. 2D, the syringe barrel 102 may include a finger flange 104 at opposite sides of the distal end of the syringe barrel 102. Further, the locking elements 116 are disposed between each finger flange 104 and through the locking element slot 216. The locking element 116 may include extension ridge 218 for sliding engagement or locking engagement of the plunger rod body 110 combined with the elongated plunger arms 108. When locking element 116 is pressed towards the walls of the syringe barrel 102, the plunger rod body 110 combined with the elongated plunger arms 108 is released from the lock and sided along the extension ridge 218, while impelling the liquid or vacuum by pulling the plunger arm 118.
[0042] For an instance, when a liquid medium, blood, gas or creating vacuum may be achieved in one hand, by pulling the cylindrical ring 120 towards the finger flange 104, and simultaneously applying distally force on the finger flange 104. This action results in that, the plunger arm 118 pushes the elongated plunger rod 108 comprising the plunger rod body 110 upward. The elongated plunger rod 108 comprising the plunger rod body 110 with the stopper 114, in turn impel the contents such as liquid medium, blood, gas or creating vacuum into the chamber 214 of the syringe barrel 102. During upward movement of the elongated plunger rod 108 comprising the plunger rod body 110, there could be stopping force which is known as sliding engagement with the extension ridge 218 of the locking elements 116. The sliding engagement is at equal interval, and the sliding engagement is on the inner grooves 112 or ridges 112 disposed on the plunger rod body 110 or the elongated plunger rods 108. This stopping force helps in indication of varying amount of impelling the liquid into the chamber 214. The inner groves 112 or ridges 112 are provided for a precious control of impelling the liquid medium, blood, gasses or creating vacuum into the chamber 214 and to be precisely controlled in one hand. The precise control is provided by the multiple inner groves 112 or ridges 112 on the plunger rod body 110 or the elongated plunger rods 108. The inner groves 112 or ridges 112 are disposed on two opposite sides of the internal arms at equal intervals, for instance 1 millilitre. The visual indicia of each interval are provided on the syringe barrel 102. Further, in another instance, the extension ridge 218 of the locking element 116 may prevent the plunger rod body 110 or the elongated plunger rods 108 while sliding inside the chamber during expelling of liquid medium, blood, gasses or creating vacuum. The extension ridge 218 of the locking element 116 is released by pressing the locking element 116, which allows the extension ridge 218 to move away from the inner groves or ridges 112 of the plunger rod body 110 or the elongated plunger rods 108. The contents such as liquid medium, blood, gasses or creating vacuum in the chamber 214 is expelled by applying distally force on the thumb press 204 of the plunger rod body 110 and simultaneously applying proximally force on finger flange 104.
[0043] FIG. 2E illustrates an enlarged view of FIG. 1, in which depicts a medical device 100, which comprises the syringe barrel 102, the elongated plunger rods 108 along with plunger rod body 110, the stopper 114, and the plunger arm 118.
[0044] FIG. 3A illustrates a perspective view of medical device 100 comprising a semi-radial locking element 220 and an enlarged view of syringe barrel 102 comprising the semi-radial locking element 220 respectively, in accordance with some embodiments of present disclosure.
[0045] In an embodiment, the chamber 214 may include a semi-radial locking element 202. This type of arrangement may not have the locking element 116. The semi-radial locking element 202 includes plurality of notches which provides a sliding or locking engagement with the plunger rod body 110 or the elongated plunger rods 108. The notches are provided slightly closer, which helps in smooth flow during impelling action and with stopping force at every equal internal for sensing while impelling the fluid or vacuum. In an instance, during impelling of fluid into the chamber 214, one side of the ridges 112 on the plunger rod body 110 or the elongated plunger rods 108 may be in contact with the semi-radial locking element 202. The plunger rod body 110 or the elongated plunger rods 108 moves slightly opposite side as there is no notch along the same axis in the opposite side of the internal arms of the plunger rod body 110 or the elongated plunger rods 108. This leaves a slight stopping force on the plunger rod body 110 or the elongated plunger rods 108 on impelling the fluid. This side tilt of the plunger rod body 110 or the elongated plunger rods 108 enables the smooth flow. Similarly, the plunger rod body 110 or the elongated plunger rods 108 is tilted, when the opposite side ridges 112 or inner grooves 112 contacts the semi-radial locking element 202. Also, to release the vacuum from the chamber 214, the thumb press 204 is pressed towards the finger flange 104.
[0046] FIG. 3B illustrates an enlarged view of FIG. 3A, in which depicts a medical device 100 comprises the syringe barrel 102, the elongated plunger rods 108 along with plunger rod body 110, the stopper 114, and the plunger arm 118.
[0047] FIG. 4A illustrates a perspective view of the medical device with elongated plunger rods and without plunger rod body, in accordance with some embodiments of present disclosure.
[0048] In an embodiment, the chamber 214 may include a semi-radial locking element 202, as depicted in FIG. 4D. This type of arrangement may not have the locking element 116. The semi-radial locking element 202 includes plurality of notches which provides a sliding or locking engagement with the plunger rod body 110 or the elongated plunger rods 108. The notches are provided slightly closer, which helps in smooth flow during impelling action and with stopping force at every equal internal for sensing while impelling the fluid or vacuum. In an instance, during impelling of fluid into the chamber 214, one side of the ridges 112 on the plunger rod body 110 or the elongated plunger rods 108 may be in contact with the semi-radial locking element 202. The plunger rod body 110 or the elongated plunger rods 108 moves slightly opposite side as there is no notch along the same axis in the opposite side of the internal arms of the plunger rod body 110 or the elongated plunger rods 108. This leaves a slight stopping force on the plunger rod body 110 or the elongated plunger rods 108 on impelling the fluid. This side tilt of the plunger rod body 110 or the elongated plunger rods 108 enables the smooth flow. Similarly, the plunger rod body 110 or the elongated plunger rods 108 is tilted, when the opposite side ridges 112 or inner grooves 112 contacts the semi-radial locking element 202. Also, to release the vacuum from the chamber 214, the thumb press 204 is pressed towards the finger flange 104.
[0049] In an embodiment, the elongated plunger rods 108 may not have a plunger rod body 110.The elongated plunger rods 108 are separated apart as depicted in FIG. 4B, to accommodate finger of a user while applying proximally directed force on the cylindrical ring 120 of the plunger arm 118. The elongated plunger rods 108, may include rods 226, and ridges 112 or inner grooves 112 on the rods 226. Further, a thumb press 222 is included on the elongated plunger rods 108, and the elongated plunger rods 108 is attached to the plunger arm 118 via the opening 228 of the plunger arm as depicted in FIG. 4C.
[0050] FIG. 4E illustrates an enlarged view of FIG. 4A, in which depicts a medical device 100 comprises the syringe barrel 102, the elongated plunger rods 108, the stopper 114, and the plunger arm 118.
[0051] FIG. 5A illustrates a perspective view of the medical device 100 with elongated plunger rods 108 and open passageway 232, and without plunger rod body, in accordance with some embodiments of present disclosure.
[0052] The type of syringe barrel 102 may have an open passage 232 for creating a vacuum by placing on any smooth surface of a subject for instance, human or animal. This type of chamber 214 may not have semi-radial locking element 220.
[0053] In an embodiment, the elongated plunger rods 108 may not have a plunger rod body 110.The elongated plunger rods 108 are separated apart as depicted in FIG. 5C, to accommodate finger of a user while applying proximally directed force on the cylindrical ring 120 of the plunger arm 118. The elongated plunger rods 108, may include rods 226, and ridges 112 or inner grooves 112 on the rods 226. Further, a thumb press 222 is included on the elongated plunger rods 108, and the elongated plunger rods 108 is attached to the plunger arm 118 via the opening 228 of the plunger arm as depicted in FIG. 5C.
[0054] The vacuum in the chamber 214 as depicted in FIG. 5B, is created by pulling the cylindrical ring 120 and applying distally force on the finger flange 104. Further, to release the vacuum from the chamber 214, the elongated plunger rods 108 are pressed towards the distal end of the syringe barrel 102.
[0055] FIG. 5C illustrates an enlarged view of FIG. 5A, in which depicts a medical device 100 comprises the syringe barrel 102, the elongated plunger rods 108, the stopper 114, and the plunger arm 118.
[0056] Embodiments herein provides a medical device to impel liquid medium, liquid medicine, blood or gas into the chamber of syringe barrel, by pulling the cylindrical ring in two finger and simultaneously pressing the finger flange in one finger from a single hand in very balanced way. Embodiments herein prevents damaging of arteries that is puncturing the walls due to motion artefacts, upon using only one hand force. Embodiments herein provide convenience while impelling blood from small veins or arteries and convenience to impel the blood from sharp curved arteries and veins. Embodiments herein provides precise control of impelling any liquid medium, liquid medicine, blood, or gas into the chamber in one hand, due to incorporation of inner groves and locking elements on the elongated plunger rods and syringe barrel, respectively. Embodiments herein allows to create vacuum in the chamber of the syringe barrel, in just one hand by the pulling action of the cylindrical ring of a plunger arm.
[0057] Embodiments herein eliminates an accidental ejection of the fluid or liquid medium due to incorporation of locking elements on the syringe barrel. Embodiments herein provides physical sense to the user which is felt on the volumetric impelling of any liquid medium, liquid medicine, blood or gas into the chamber sue to groves and ridges on the elongated plunger rods or plunger rod body.
[0058] 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 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.
[0059] The specification has described a medical device and a plunger arm for a syringe bareel. 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.
[0060] 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 limiting, of the scope of the invention, which is set forth in the following claims.