Description:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(Section 10 and Rule 13)

1. TITLE OF THE INVENTION: ANNULOPLASTY IMPLANT
2. APPLICANT:
Meril Corporation (I) Private Limited, an Indian company of the address Survey No. 135/139, Muktanand Marg, Bilakhia House, Pardi, Vapi, Valsad-396191 Gujarat, India.

The following specification particularly describes the invention and the manner in which it is to be performed:

FIELD OF INVENTION
[001] The present disclosure relates to bio-medical implants. More particularly, the present disclosure relates to annuloplasty implants.
BACKGROUND OF INVENTION
[002] The bicuspid valve (also known as the mitral valve) separates the left atrium and the left ventricle of the heart to allow a controlled flow of blood from the left ventricle to the left atrium. The bicuspid valve includes two leaflets (or flaps) that rhythmically open and close to allow and block blood flow across the bicuspid valve respectively. The leaflets block blood flow by overlapping with each otherWith age and/or disease, the diameter of the bicuspid valve enlarges, consequently causing the leaflets to not overlap completely, even in the closed position. This causes some of the blood to flow back into the left atrium when the left ventricle contracts. This unwanted flow back is termed mitral regurgitation. Prolonged mitral regurgitation can lead to complications such as heart failure or atrial palpitation.
[003] In severe cases, treatment of mitral regurgitation involves invasive, open-heart surgical procedures such as mitral valve repair, or mitral valve replacement.
[004] Such open-heart surgeries carry significant risks, particularly for old patients. One such risk is that of significant blood loss during these procedures. Further, healing time associated with open heart surgeries is significantly more.
[005] Another conventional approach to prevent mitral regurgitation in less several cases includes transcatheter implant procedures. However, transcatheter implants known in the art suffer from shortcomings such as loosening and/or migration of the implant away from the originally implanted position. Further, actuating these implants is time consuming, which leads to loss of blood in the patient. Moreover, these implants are bulky and have a complex design, which may require long implantation procedures and may be damaging to the blood vessels, causing trauma to the nearby tissues.
[006] Hence, there is a need of an implant which overcomes these and other shortcomings of the implants known in the art.
SUMMARY OF INVENTION
[007] Particular embodiments of the present disclosure are described herein below with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are mere examples of the disclosure, which may be embodied in various forms. Well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
[008] The present disclosure relates to an implant. In an embodiment, the implant includes an actuating shaft and a plurality of legs. The actuating shaft is configured to move in a translational motion along an axis of the actuating shaft in response to a corresponding translational input. The plurality of legs is coupled to the actuating shaft. Each leg of the plurality of legs is configured to pivot radially inwards and outwards about a corresponding pivoting point in response to the translational motion of the actuating shaft.
BRIEF DESCRIPTION OF THE DRAWING
[009] The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the apportioned drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the disclosure is not limited to specific methods and instrumentality disclosed herein. Moreover, those in the art will understand that the drawings are not to scale.
[0010] Fig. 1A depicts a side view of an implant 100, according to an embodiment of the present disclosure.
[0011] Fig. 1B depicts an exploded view of the implant 100, according to an embodiment of the present disclosure.
[0012] Fig. 2 depicts an actuating shaft 130 of the implant 100, according to an embodiment of the present disclosure.
[0013] Fig. 3A depicts a perspective view of a collar 110 of the implant 100, according to an embodiment of the present disclosure.
[0014] Fig. 3B depicts an auxiliary view of the collar 110 of the implant 100, according to an embodiment of the present disclosure.
[0015] Fig. 4 depicts various views of a resilient member 160 of the implant 100, according to an embodiment of the present disclosure.
[0016] Fig. 5 depicts various views of a leg 120 of the implant 100, according to an embodiment of the present disclosure.
[0017] Fig. 6 depicts a perspective view of a link 150, according to an embodiment of the present disclosure.
[0018] Fig. 7 depicts various view of an anchor 140 of the implant 100, according to an embodiment of the present disclosure.
[0019] Fig. 8A depicts the implant 100 anchored at a target site inside a patient’s body, according to an embodiment of the present disclosure.
[0020] Fig. 8B depicts the implant 100 in an actuated state, according to an embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE DRAWINGS
[0021] Prior to describing the invention in detail, definitions of certain words or phrases used throughout this patent document will be defined: the terms "include" and "comprise", as well as derivatives thereof, mean inclusion without limitation; the term "or" is inclusive, meaning and/or; the phrases "coupled with" and "associated therewith", as well as derivatives thereof, may mean to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have a property of, or the like. Definitions of certain words and phrases are provided throughout this patent document, and those of ordinary skill in the art will understand that such definitions apply in many, if not most, instances to prior as well as future uses of such defined words and phrases.
[0022] Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment, but mean “one or more but not all embodiments” unless expressly specified otherwise. The terms “including,” “comprising,” “having,” and variations thereof mean “including but not limited to” unless expressly specified otherwise. An enumerated listing of items does not imply that any or all of the items are mutually exclusive and/or mutually inclusive, unless expressly specified otherwise. The terms “a,” “an,” and “the” also refer to “one or more” unless expressly specified otherwise.
[0023] Although the operations of exemplary embodiments of the disclosed method may be described in a particular, sequential order for convenient presentation, it should be understood that the disclosed embodiments can encompass an order of operations other than the particular, sequential order disclosed. For example, operations described sequentially may in some cases be rearranged or performed concurrently. Further, descriptions and disclosures provided in association with one particular embodiment are not limited to that embodiment, and may be applied to any embodiment disclosed herein. Moreover, for the sake of simplicity, the attached figures may not show the various ways in which the disclosed system, method, and apparatus can be used in combination with other systems, methods, and apparatuses.
[0024] Furthermore, the described features, advantages, and characteristics of the embodiments may be combined in any suitable manner. One skilled in the relevant art will recognize that the embodiments may be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments. These features and advantages of the embodiments will become more fully apparent from the following description and apportioned claims, or may be learned by the practice of embodiments as set forth hereinafter.
[0025] The present disclosure relates to an annuloplasty implant. The implant prevents bicuspid valve (e.g., mitral valve) regurgitation. The implant of the present disclosure is implanted on the native annulus of a patient’s heart. In an embodiment, the implant may include an actuating shaft and a plurality of legs pivotably coupled to the actuating shaft. According to an embodiment, the actuating shaft moves translationally upward in response to a translational input. As a result, the plurality of legs pivots inward, causing the radius of the implant to constrict. This leads to constriction of the annulus of the bicuspid valve, thereby preventing regurgitation. Though the application of the implant of the present disclosure is explained in reference to preventing a bicuspid valve regurgitation, it should be noted that the teachings of the present invention may also be extended to prevent a tricuspid valve regurgitation in a patient and the same is within the scope of the present disclosure.
[0026] Referring now to the figures, the overall structure and construction of an exemplary implant 100 is described in conjunction with Fig. 1A. and Fig. 1B. Fig. 1A depicts an assembled view and Fig. 1B depicts an exploded view of the implant 100 according to an embodiment of the present disclosure. The implant 100 has a proximal end 100a and a distal end 100b. The implant 100 include an actuating shaft 130, a collar 110, a plurality of legs 120 (hereinafter, legs 120), a plurality of resilient members 160 (hereinafter, resilient members 160), a plurality of links 150 (hereinafter, links 150) and a plurality of anchors 140 (hereinafter, anchors 140). The components mentioned above in the implant 100 are designed to work together in a synchronized manner to partially constrict the bicuspid valve opening.
[0027] Fig. 2 shows an exemplary actuating shaft 130. The actuating shaft 130 has a proximal end 130a and a distal end 130b. In the depicted embodiment, the actuating shaft 130 is a moving shaft. The actuating shaft 130 includes a head 130c, a stem 132, a link hub 136, and a stopper 134. In an embodiment, the actuating shaft 130 is capable of translation movement facilitating the radial expansion and contraction of the implant 100. In various embodiments, the actuating shaft 130 moves in a translational motion along the longitudinal axis of the actuating shaft 130, in response to a translational input. In other words, the actuating shaft 130 may be pushed or pulled by an implant 100 actuation tool during an annuloplasty procedure. The head 130c is configured to receive the translational input during an annuloplasty procedure. The head 130c may have a suitable cross section such as, without limitation, circular, hexagonal, square, pentagonal, heptagonal, octagonal, etc. In an example implementation, the cross section of the head 130c is hexagonal. The actuating shaft 130 may be made of a material, such as, without limitation, stainless steel, Nitinol, Titanium, Cobalt-Chromium, etc. In an embodiment, the actuating shaft 130 is made of stainless steel. The actuating shaft 130 may have a pre-defined length ranging from 12 mm to 20 mm. In an embodiment, the actuating shaft 130 has a length of 17 mm. The actuating shaft 130 may have a pre-defined diameter ranging from 1 mm to 4 mm. In an example implementation, the actuating shaft 130 has a diameter of 1.5 mm.
[0028] The stem 132 of the actuating shaft 130 is coupled to the stopper 134. Alternatively, the stopper 134 may be formed integrally with the stem 132 or the actuating shaft 130. In response to the actuating shaft 130 moving upward, the stopper 134 is configured to move upwards. The stopper 134 is configured to engage with the resilient members 160 (described later in conjunction with Fig 4) to control the translational motion of the actuating shaft 130, and consequently the extent of convergence or divergence of the legs 120. The stopper 134 may have any suitable shape, such as, but not limited to, cylindrical, donut, oval, square, etc. In an example implementation, the stopper 134 is donut-shaped.
[0029] The actuating shaft 130, along with the link hub 136, and the links 150 ensure that all the legs 120 coupled to the actuating shaft 130 move in synchronization, and to an equal degree. In other words, the actuating shaft 130 being pulled or pushed will cause each of the legs 120 to pivot/swing radially inward or outward at the same time, and to the same angular extent.
[0030] Figs. 3A and 3B show an exemplary collar 110, according to various embodiments. The collar 110 includes a bore 112 for receiving the actuating shaft 130 and the resilient members 160. The bore 112 is configured to receive at least a part of the actuating shaft 130. In an embodiment, the bore 112 receives a part of the actuating shaft 130 such that the head 130c and the link hub 136 are disposed outside the bore 112. A plurality of retention clips 114 (hereinafter, the retention clips 114) are coupled to an inner surface of the bore 112. Each retention clip 114 is coupled with one end of a corresponding resilient member 160. The retention clips 114 may be coupled with the resilient members 160 using, for example, welding, laser welding, soldering, brazing, etc. In the assembled state, the resilient members 160 are disposed fully within the bore 112 of the collar 110. A plurality of coupling webs 116 (hereinafter, the coupling webs 116) extend radially outwards from an outer surface of the collar 110. The coupling webs 116 facilitate the coupling of the legs 120 with the collar 110. Each coupling web 116 includes a hole 116a. In an embodiment, the actuating shaft 130 passes through the bore 112 of the collar 110. The collar 110 may have a pre-defined length ranging from 5 mm to 9 mm. In an embodiment, the collar 110 has a length of 8 mm. Inner diameter of the collar 110 may range from 3 mm to 7 mm and outer diameter of the collar 110 may range from 6 mm to 10 mm. In an example implementation, the inner and the outer diameters of the collar 110 are 4.5 mm and 8.5 mm, respectively. The collar 110 may be made of a material, such as, without limitation, Stainless steel, nitinol, titanium, cobalt-chromium, etc. In an example implementation, the collar 110 is made of Stainless steel.
[0031] Fig. 4 depicts a side view of an exemplary resilient member 160 of the plurality of resilient members 160, according to various embodiments. The resilient member 160 has a proximal end 160a and a distal end 160b. The resilient member 160 may be a leaf spring, a coil spring, a torsion spring, etc. In an embodiment, the resilient member 160 is a leaf spring. The resilient member 160 is coupled to the collar 110 via the respective retention clips 114. In an embodiment, each resilient member 160 has a convex profile such that an apex 160c of the resilient member 160 is disposed towards a central axis of the collar 110. The stopper 134 is in contact with the resilient members 160. The resilient members 160 ensure that the stopper 134 (and therefore, the actuating shaft 130) stays either in a top position or a bottom position. When the stopper 134 is in a bottom position (i.e., when the legs 120 in a radially expanded position), the stopper 134 is disposed distal to the apex 160c of the resilient member 160. As the actuating shaft 130 is pulled upwards due to the actuating input, the stopper 134 too moves upwards. When the stopper 134 contacts the resilient member 160, a pressure is applied on the resilient member 160, causing the resilient member 160 to be in a compressed state. When the stopper 134 is aligned with the apex 160c of the resilient member 160, the resilient member 160 is in a fully compressed state. As the actuating shaft 130 (and therefore, the stopper 134) continues to move upwards, the pressed on the resilient member 160 decreases and the resilient member 160 starts to regain original shape. When the stopper 134 is in a top position, the stopper 134 is disposed proximal to the apex 160c and has no contact with the resilient member 160, the resilient member 160 regains the original shape. The resilient members 160 and the stopper 134 are designed such that, in the absence of the actuating input, the force applied by the stopper 134 on the resilient member 160 is not enough to compress the resilient member 160. Consequently, the resilient member 160 is configured to prevent any downward movement of the actuating shaft 130 from the top position to the bottom position due to the convex shape. Thus, the stopper 134 and the resilient members 160 are configured to control the motion of the actuating shaft 130, consequently ensuring that the legs 120 either stay in a fully diverged position, or a fully converged position.
[0032] The legs 120 are coupled to the actuating shaft 130. Fig. 5 depicts various views of an exemplary leg 120, according to an embodiment of the present disclosure. In various embodiment, the implant 100 may include three or more such legs 120. Preferably, the implant 100 includes between three to eight legs 120. In an example implementation, the implant 100 includes five legs 120. The leg 120 has a proximal end 120a and a distal end 120b. The leg 120 may be made up of a biocompatible material, such as, without limitation, stainless steel, Nitinol, Titanium, Cobalt-Chromium, etc. In an embodiment, the leg 120 is made of Nitinol. The leg 120 may have a pre-defined length ranging from 22 mm to 30 mm. In an embodiment, the leg 120 has a length of 26 mm.
[0033] The leg 120 includes a first coupling portion 122, a second coupling portion 124, and a foot 126. In an embodiment, the first coupling portion 122 is disposed at the proximal end 120a and the foot 126 is disposed at the distal end 120b. The second coupling portion 124 is disposed between the first coupling portion 122 and the foot 126. In the depicted embodiment, the second coupling portion 124 is situated around the middle of the leg 120. The leg 120 may have a curved profile or a straight profile. In an embodiment, the leg 120 has a curved profile. The curved profile of the leg 120 provides strength to the implant 100 and also facilitates equal distribution of radial force post deployment. The legs 120 swing radially inward/outward. As a result, the implant 100 as a whole changes radius. The proximal end 120a of the leg 120 is coupled to the collar 110 using the first coupling portion 122. The first coupling portion 122 engages with a corresponding coupling web 116 of the collar 110. In an embodiment, the first coupling portion 122 and the corresponding coupling web 116 are coupled using a pin (not shown). A hole 120i is provided on each arm of the first coupling portion 122. The arms of the first coupling portion 122 straddle the corresponding coupling web 116. The hole 116a and the holes 120i are configured to receive the corresponding pin.
[0034] The leg 120 is pivotably coupled to the actuating shaft 130 via the second coupling portion 124. In an embodiment, the leg 120 is coupled with actuating shaft 130 using a corresponding link 150 of the links 150. An exemplary link 150 is depicted in Fig. 6. A hole 150a is provided at each end of the link 150. One end of the link 150 is pivotably coupled to the link hub 136. For example, the link hub 136 is provided with a slot 138 to receive one end of the link 150. The slot 138 has a hole on either side and is coupled to the link 150 via a pin passing through the holes of the slot 138 and the hole 150a of the link 150. The links 150 may be made of a material, such as, without limitation, Stainless steel, nitinol, titanium, cobalt-chromium, etc. In an example implementation, the links 150 are made of Stainless steel. In an embodiment, the links 150 are rectangular with curved ends, though the links 150 may have any other desired shape.
[0035] The other end of the link 150 is coupled to the second coupling portion 124 of the leg 120. The second coupling portion 124 includes an elongated aperture and holes 120h provided on the leg 120 on either side of the aperture. The holes 120h of the second coupling portion 124 and the hole 150a of the link 150 receive a pin, thereby pivotably coupling the leg 120 with the actuating shaft 130. Such a coupling mechanism allows the swinging (or pivoting) motion of the legs 120, in response to the translational motion of the actuating shaft 130.
[0036] In an embodiment, the foot 126 may be generally tapered in shape, Alternatively, the foot 126 may have any other shape such as, but not limited to, oval, square, rectangular, and so forth. In an embodiment, the foot 126 may be disposed at an angle with respect to the central axis of the collar 110 in a normal (or unactuated) state of the implant 100. In various embodiments, the leg 120 may have a profile such that the foot 126 may be substantially perpendicular to the surface of the mitral valve annulus, in the actuated position of the implant 100. The foot 126 may include an opening 120f, and a plurality of holes 120g. The opening 120f and the holes 120g are configured to receive a portion of one of the anchors 140. The plurality of holes 120g may be disposed alternatingly in a pre-defined pattern (e.g., a zig-zag pattern) as shown in Fig. 5. The foot 126 may have a pre-defined length ranging from 6 mm to 10 mm. In an example implementation, the foot 126 has a length of 8 mm.
[0037] Each leg 120 of the plurality of legs 120 is configured to pivot or swing radially inward and outward about a corresponding pivot point in response to the translational (or longitudinal) motion of the actuating shaft 130. The direction of radial movement of the plurality of legs 120 depends upon the direction of the longitudinal motion of the actuating shaft 130. When the actuating shaft 130 is moved upward, the link hub 136 also moves in the upward direction. Due to the linkage-based coupling between the link hub 136 and the legs 120, when the link hub 136 moves upwards, the links 150 pivot inwards, causing the legs 120 to pivot radially inward. The pivot coupling between the legs 120 and the collar 110 facilitates the inward movement of the legs 120. Thus, the legs 120 pivot/swing radially inward when the actuating shaft 130 moves in the upward direction. Similarly, the legs 120 pivot/swing radially outward when the actuating shaft 130 moves in the downward direction.
[0038] Fig. 7 depicts an exemplary anchor 140 of the plurality of anchors 140, according to an embodiment. The plurality of anchors 140 are configured to anchor the implant 100 at an implantation site (e.g., the annulus of the mitral valve). Each anchor 140 is configured to move in a translational motion in response to a corresponding rotational input. In an embodiment, each anchor 140 is coupled to a corresponding one of the legs 120. The number of anchors 140 depend on the number of legs 120. The anchor 140 may be a resilient member such as a coil spring, spike, arrowhead, etc. In an embodiment, the anchor 140 is a coil spring. The anchor 140 has a proximal end 140a and a distal end 140b. The anchor 140 includes a head 140c and a body 140d. The head 140c is situated towards the proximal end 140a and the body 140d extends from the head 140c towards the distal end 140b of the anchor 140. The head 140c facilitates in gripping and manipulating the anchor 140 during actuating of the implant 100. In an embodiment, the head 140c includes a projection having an aperture 140f. The aperture 140f of the anchor 140 is configured to engage with a corresponding actuator used for gripping and manipulating the anchor 140. The head 140c is disposed within the opening 120f of the corresponding leg 120. The body 140d may include helical coils, arranged to screw in and out of the annular walls of the mitral valve. The body 140d is coupled to the corresponding leg 120 such that the anchor 140 is substantially parallel to the central axis of the implant 100 in the actuated position. In an embodiment, one or more coils of the helical coils of the body 140d pass through the plurality of holes 120g of the foot 126. Passing the one or more coils of the body 140d through the plurality of holes 120g secure the anchor 140 to the leg 120, while still allowing the anchor 140 the rotational and translation freedom similar to a screw, for correct operation. The anchor 140 has a tip 140e at the distal end 140b. The tip 140e has a pre-defined shape. The plurality of anchors 140 may be made of a material, such as, without limitation, stainless steel, nitinol, titanium, cobalt-chromium, etc. In an example implementation, the plurality of anchors 140 are made of stainless steel. The anchor 140 may have a pre-defined length ranging from 6 mm to 12 mm. In an embodiment, the anchor 140 has a length of 9 mm.
[0039] During a medical procedure, after the implant 100 is positioned in the desired location, each of the multiple anchors 140 is rotated with an actuator, such as, a flexible shaft operated by a surgeon, to facilitate the penetration of the tip 140e of the anchor 140 into the mitral valve annular wall, thereby anchoring the implant 100 on the mitral valve annular wall.
[0040] In an embodiment, the tip 140e of the anchor 140 has a conical shape. The conical shaped tip 140e facilitates easy anchoring and penetration of the anchor 140 inside the annulus tissue wall of the mitral valve. This ensures proper fixation of the implant 100 to the annulus of the mitral valve and prevents the implant 100 from migrating. Although the anchor 140 is shown have a conical tip 140e, the tip 140e may have any other pre-defined shape, such as, without limitation, spiral, needle shaped, z-shaped, etc.
[0041] A minimally invasive method, such as a transcatheter technique, allows the implant 100 to be delivered to the target location. For example, a guide catheter is inserted into the patient's body through an access site, such as the femoral vein, and then advanced to the right atrium. The use of a steerable guide catheter enables better control and positioning of a delivery system. The puncture or incision for the entry can be created using any of a variety of appropriate surgical tools. The delivery system is navigated to the left atrium and further through the left atrium to the mitral valve. Technique such as, real time echocardiography and fluoroscopy may be used for better navigation of the delivery apparatus inside the body. Once the delivery system reaches the targeted site, the implant 100 is carefully positioned above the mitral valve. The implant 100 is placed on the annular wall of the mitral valve.
[0042] The plurality of anchors 140 are anchored on the annular wall of the mitral valve. Once the plurality of anchors 140 are anchored, the surgeon rotates each anchor 140 in a pre-defined direction (for example, clockwise or anticlockwise rotation) using a suitable tool to fix the anchor 140 on the annular wall. Fig. 8A illustrates the implant 100 after anchoring the plurality of anchors 140 on the annular wall of the mitral valve. The surgeon may then use another tool to attach to the head 130c of the actuating shaft 130. The surgeon may then move the actuating shaft 130 upwards, causing the legs 120 to pivot or swing inwards. As a result, the overall radius of the implant 100 constricts. This constriction of the implant 100 brings the valve flaps (leaflets) of the mitral valve closer together, as illustrated in Fig. 8B, by constricting the annulus of the mitral valve, thus preventing mitral regurgitation.
[0043] The implant of the present disclosure has a simple design and is easy to operate. This makes the operate procedure more efficient and reduces the surgery time. As the surface area of the implant is larger than conventional implants, the radial forces acting on the implant is more evenly distributed, thereby enhancing the stability of the implant. Further, the implant can be easily loaded inside a catheter and anchored at the target site. The implant is retractable and repositionable. For example, if the implant is not placed properly at the target site, the implant can be retracted and repositioned correctly. The implant preserves the native anatomy of an individual, which helps improving the quality of life, maintaining breathing pattern and reduce hospitalization for the patient. Thus, the overall patient outcome is improved.
[0044] The scope of the invention is only limited by the appended patent claims. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings of the present invention is/are used. , Claims:WE CLAIM:
1. An implant (100) comprising:
an actuating shaft (130) configured to move in a translational motion along an axis of the actuating shaft (130), responsive to a corresponding translational input; and
a plurality of legs (120) coupled to the actuating shaft (130), each leg (120) of the plurality of legs (120) is configured to pivot radially inward and outward about a corresponding pivoting point in response to the translational motion of the actuating shaft (130).
2. The implant (100) as claimed in claim 1, wherein the implant (100) comprises:
a collar (110) comprising a bore (112) configured to receive at least a portion of the actuating shaft (130);
wherein each of the plurality of legs (120) is pivotably coupled to the collar (110).
3. The implant (100) as claimed in claim 2, wherein the implant (100) comprises:
a plurality of resilient members (160) disposed within the bore (112), each resilient member (160) of the plurality of resilient members (160) has a convex profile and has an apex (160c) disposed towards a central axis of the collar (110); and
a stopper (134) formed integrally on, or rigidly coupled to the actuating shaft (130);
wherein, in an up position, the stopper (134) is disposed proximal to the apex (160c) of each resilient member (160) and in a down position, the stopper (134) is disposed distal to the apex (160c) of each resilient member (160),
wherein, in the absence of the translational input, the plurality of resilient members (160) are configured to prevent the stopper (134) moving from the up position to the bottom position.
4. The implant (100) as claimed in claim 2, wherein the collar (110) comprises a plurality of coupling webs (116) extending outwards from an outer surface of the collar (110), wherein a first coupling portion (122) of each leg (120) is pivotably coupled to a corresponding coupling web (116) of the plurality of coupling webs (116).
5. The implant (100) as claimed in claim 1, wherein the actuating shaft (130) comprises:
a head (130c) configured to receive the translational input;
a link hub (136) configured to couple the actuating shaft (130) with each of the plurality of legs (120); and
a stem (132) configured to rigidly couple the head (130c) and the link hub (136).
6. The implant (100) as claimed in claim 5, wherein a second coupling portion (124) of each leg (120) is coupled to the link hub (136) through a corresponding link (150).
7. The implant (100) as claimed in claim 1, wherein the implant (100) comprises:
a plurality of anchors (140) configured to anchor the implant (100) at an implantation site, each of the plurality of anchors (140) is coupled to a corresponding one of the plurality of legs (120) and is configured to move in a translational motion in response to a rotational input.
8. The implant (100) as claimed in claim 7, wherein each anchor (140) of the plurality of anchors (140) comprises:
a head (140c) disposed within an opening (120f) of a foot (126) of the corresponding leg (120), the head (140c) comprising a projection having an aperture (140f);
a body (140d) comprising helical coils, wherein one or more coils of the helical coils pass through a plurality of holes (120g) provided on the foot (126).