Biological patch conveying system

Abstract

The utility model relates to a biological patch conveying system. The biological patch conveying system comprises a fixing rod, a push-pull rod and two expansion assemblies which are oppositely arranged. The push-pull rod is arranged in parallel and slidably connected to the fixing rod. The expansion assembly is connected to the far end of the fixing rod and provided with a threading hole for a suture of the biological patch to penetrate through. According to the biological patch conveying system provided by the embodiment of the utility model, the two expansion assemblies can carry the biological patch through the suture, the push-pull rod is in sliding connection relative to the fixed rod so as to drive the two expansion assemblies to expand and contract, and the biological patch can be conveniently conveyed to an injured part when the expansion assemblies contract; the expansion assembly is used for spreading the biological patch to be attached to a tissue surface after being expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical implants, in particular to a biological patch delivery system. Background Art

[0002] The demand for tissue repair is gradually increasing. In the medical field, after injuries to tissues such as rotator cuff, Achilles tendon, ligament, and muscle, laparoscopic surgery is usually required for repair. For example, suturing repair is performed using sutures, anchors, etc. under laparoscopy. However, due to various reasons, including the size of the injury, the degree of the lesion, the infiltration of fat, age, and other factors, re-injury often occurs after surgery, and once re-injury occurs, it will bring greater pain to the patient.

[0003] In order to enhance tissue repair, including reducing the occurrence of re-injury after tissue repair, in recent years, using the means of regenerative medicine to enhance repair has become a very effective treatment method clinically. For example, using a patch to enhance repair. Hernia repair patches, dura mater patches, rotator cuff patches, ligament patches, etc. have all been successfully applied clinically.

[0004] When using a patch to enhance tissue repair under laparoscopy, it is usually necessary to use a tool to deliver the patch to the damaged site and spread the patch to fit the tissue surface. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a biological patch delivery system.

[0006] An embodiment of the utility model provides a biological patch delivery system, which includes a fixed rod, a push-pull rod, and two expansion components arranged oppositely. The push-pull rod is arranged parallel to and slidably connected to the fixed rod. The expansion component is connected to the distal end of the fixed rod and has a threading hole for the suture of the biological patch to pass through.

[0007] For the biological patch delivery system provided by the embodiment of the utility model, the two expansion components can carry the biological patch through the suture. The push-pull rod is slidably connected to the fixed rod to drive the two expansion components to expand and contract. When the expansion components contract, it is convenient to deliver the biological patch to the damaged site. After the expansion components expand, they are used to spread the biological patch to fit the tissue surface.

[0008] In some of these embodiments, at least one expansion component includes a first rod, a second rod, and a third rod that are sequentially rotatably connected from the fixed rod to the push-pull rod and whose rotation axes are parallel to each other. The second rod includes a fixed part with a threading hole that extends and protrudes from the third rod.

[0009] With such a setting, a biological patch is to be arranged between the two relatively arranged expansion rod groups, and the sutures of the biological patch pass through the thread holes and are fixed. Under the movement of the push-pull rod, the first rod, the second rod, and the third rod all rotate so that the second rod approaches the other expansion rod group to fold the biological patch, facilitating the delivery of the biological patch to the damaged site; when the push-pull rod moves in the reverse direction, the first rod, the second rod, and the third rod rotate again so that the second rod moves away from the other expansion rod group to drive the biological patch to unfold, and then the fixed rod is moved to accurately fit the biological patch with the tissue surface. This biological patch system can be used to accurately position and place the biological patch at the desired position, improving the positioning accuracy of the biological patch delivery system.

[0010] In some embodiments, the distal end of the push-pull rod protrudes from the distal end of the fixed rod along the sliding direction, and there is a protruding distance between the distal end of the push-pull rod and the distal end of the fixed rod. The push-pull rod has a first position with a large protruding distance and a second position with a small protruding distance. The push-pull rod in the first position makes the two expansion assemblies in a tightened state. The push-pull rod in the second position makes the two expansion assemblies in an open state.

[0011] With such a setting, when the push-pull rod slides along the sliding direction, it protrudes from the fixed rod, preventing collision with the fixed rod during sliding and facilitating the change of the position of the push-pull rod so as to change the state of the two expansion assemblies as a whole.

[0012] In some embodiments, among the two expansion assemblies in the tightened state, the first rod, the second rod, and the third rod all extend along the sliding direction. Among the two expansion assemblies in the open state, the first rod is perpendicular to the fixed rod and the second rod, and the third rod is inclined relative to the first rod.

[0013] With such a setting, the push-pull rod rotates the first rod, the second rod, and the third rod to change their respective positions and angles, facilitating the folding and unfolding of the biological patch.

[0014] In some embodiments, the length of the third rod is greater than the length of the first rod. The rotation axis of the first rod relative to the fixed rod and the rotation axis of the third rod relative to the push-pull rod are spaced along the sliding direction.

[0015] With such a setting, the rotation of the first rod relative to the fixed rod is not likely to interfere with the rotation of the third rod relative to the push-pull rod, and the rotation angle of the third rod is smaller than the rotation angle of the first rod, facilitating the two second rods to remain parallel during movement.

[0016] In some embodiments, the biological patch delivery system further includes a handle. The handle has a receiving space, and the proximal ends of the fixed rod and the push-pull rod are both located in the receiving space. The fixed rod is fixed to the handle. Card wire grooves are formed on both sides of the handle, and the card wire grooves are used to fix the sutures of the biological patch.

[0017] With such a setting, the handle facilitates operations such as movement control by the doctor, and the wire clip groove facilitates the fixation of the suture of the biological patch.

[0018] In some of the embodiments, the biological patch delivery system further includes a driving member, which is connected to the proximal end of the push-pull rod, and the driving member is used to control the sliding of the push-pull rod.

[0019] With such a setting, the doctor can control the sliding of the push-pull rod through the driving member, which facilitates the change of the state of the expansion assembly and is convenient for the delivery and spreading of the biological patch.

[0020] In some of the embodiments, the handle is provided with a mounting groove that exposes a part of the push-pull rod, and the mounting groove extends along the sliding direction. The driving member passes through the mounting groove and protrudes from the handle.

[0021] With such a setting, the extending length of the mounting groove is limited, and the front side and the rear side can abut against the driving member. Therefore, the mounting groove mechanically limits the driving member, so that the stroke of the push-pull rod is limited, improving the position accuracy of the tightening and opening of the expansion assembly. The driving member protruding from the handle is convenient for the doctor to use.

[0022] In some of the embodiments, a protrusion is provided on the proximal end of the push-pull rod, and the protrusion faces the mounting groove. One end of the driving member facing the push-pull rod is provided with a groove, and the groove cooperates with the protrusion so that the driving member can drive the push-pull rod to slide.

[0023] With such a setting, it is convenient for the connection and fixation of the driving member and the push-pull rod, and it is convenient for the driving member to control the sliding of the push-pull rod.

[0024] In some of the embodiments, the mounting groove is provided with a clamping portion, and the clamping portion is located on the side wall of the mounting groove. The side wall of the driving member is provided with a cooperating portion, and the cooperating portion can be clamped to the clamping portion so that the two expansion assemblies maintain a stable open state.

[0025] With such a setting, when the clamping portion and the cooperating portion cooperate, there is no need to continuously apply force to maintain the open state of the two expansion assemblies, increasing the stability of the open state, and thus enabling the doctor to perform other operations more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the biological patch delivery system in the embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the use of the biological patch delivery system for delivering a biological patch in the embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the use of the biological patch delivery system for deploying a biological patch in the embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the connection structure of two expansion components, a fixed rod and a push rod in an embodiment of the present utility model;

[0030] Figure 5 Schematic diagram of the connection structure of two expansion components, a fixed rod and a push rod in an embodiment of the present utility model;

[0031] Figure 6 Partial cross-sectional view of a biological patch delivery system in an embodiment of the present utility model;

[0032] Figure 7 Schematic diagram of the structure of a handle in an embodiment of the present utility model;

[0033] Figure 8 Schematic diagram of the structure of a driving member in an embodiment of the present utility model;

[0034] Figure 9 Schematic diagram of the structure of a push-pull rod in an embodiment of the present utility model.

[0035] Reference numerals:

[0036] 100, biological patch delivery system; 10, fixed rod; 20, push-pull rod; 21, protrusion; 30, expansion component; 31, first rod; 32, second rod; 321, fixing portion; 33, third rod; 34, threading hole; 40, handle; 41, accommodating space; 42, wire clamping groove; 43, installation groove; 431, clamping portion; 50, driving member; 51, groove; 52, mating portion; 200, biological patch; 300, suture. Detailed implementation manners

[0037] In order to make the above-mentioned objects, features and advantages of the embodiments of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the embodiments of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the embodiments of the present utility model. However, the embodiments of the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the embodiments of the present utility model. Therefore, the embodiments of the present utility model are not limited by the specific embodiments disclosed below.

[0038] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present utility model.

[0039] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0040] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. Exemplarily, the first expansion component may also be referred to as the second expansion component, and the second expansion component may also be referred to as the first expansion component. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0041] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connected", "joined", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a flexible connection, or a rigid connection along at least one direction; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be an intermediate medium while being directly connected, and it may also be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. The terms "installed", "fixed", etc. can be understood in a broad sense as connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] For a biological patch delivery system, among the two ends of each component along the delivery direction, those facing the insertion side can be referred to as the distal end, and those facing the operation side can be referred to as the proximal end.

[0043] Reference Figure 1 , Figure 1 shows the overall structure of the biological patch delivery system 100. An embodiment of the present invention provides a biological patch delivery system 100, which includes a fixed rod 10, a push-pull rod 20, and two expansion components 30 arranged oppositely. Exemplarily, the expansion components 30 are arranged oppositely in the left-right direction.

[0044] The push-pull rod 20 is connected to the fixed rod 10. The push-pull rod 20 slides relative to the fixed rod 10. Exemplarily, the push-pull rod 20 slides along the sliding direction, and the sliding direction is the front-back direction, that is, the push-pull rod 20 slides relative to the fixed rod 10 along the front-back direction.

[0045] The push-pull rod 20 is arranged parallel to the fixed rod 10. Exemplarily, the parallel direction is the up-down direction, that is, the push-pull rod 20 and the fixed rod 10 are arranged parallel in the up-down direction.

[0046] The expansion component 30 is connected to the distal end of the fixed rod 10. The expansion component 30 has a threading hole 34 for the suture 300 of the biological patch 200 to pass through. Exemplarily, the distal end of the fixed rod 10 is the front end of the fixed rod 10, that is, the expansion component 30 is connected to the front end of the fixed rod 10 along the front-back direction.

[0047] In the biological patch delivery system 100 provided by the embodiment of the present invention, the two expansion components 30 can carry the biological patch 200 through the suture 300. The push-pull rod 20 is slidably connected relative to the fixed rod 10 to drive the two expansion components 30 to expand and contract. When the expansion component 30 contracts, it is convenient to deliver the biological patch 200 to the damaged part. After the expansion component 30 expands, it is used to spread the biological patch 200 to fit the tissue surface.

[0048] Reference Figure 2 and Figure 3, in some embodiments, at least one expansion component 30 includes a first rod 31, a second rod 32, and a third rod 33. The first rod 31 is rotatably connected to the fixed rod 10, the second rod 32 is rotatably connected to the first rod 31, the third rod 33 is rotatably connected to the second rod 32, and the push-pull rod 20 is rotatably connected to the third rod 33. The rotation axis of the second rod 32 relative to the first rod 31 is parallel to the rotation axis of the first rod 31 relative to the fixed rod 10, the rotation axis of the third rod 33 relative to the second rod 32 is parallel to the rotation axis of the second rod 32 relative to the first rod 31, the rotation axis of the push-pull rod 20 relative to the third rod 33 is parallel to the rotation axis of the third rod 33 relative to the second rod 32, and the rotation axis of the first rod 31 relative to the fixed rod 10 is parallel to the rotation axis of the push-pull rod 20 relative to the third rod 33.

[0049] The fixing portion 321 of the second rod 32 extends and protrudes from the third rod 33. A wire threading hole 34 is provided on the fixing portion 321.

[0050] In the biological patch delivery system 100 provided by the embodiment of the present utility model, the push-pull rod 20 has an initial position relative to the fixed rod 10. At this time, a biological patch 200 is provided between two expansion components 30 arranged oppositely in the left-right direction. A suture 300 is provided on the biological patch 200. The suture 300 passes through the wire threading hole 34 and is fixed. The push-pull rod 20 slides forward relative to the fixed rod 10, driving the sequentially connected first rod 31, second rod 32, and third rod 33 to rotate, and causing the two second rods 32 to approach each other in the left-right direction. The biological patch 200 is folded during the approaching process of the two second rods 32. When the push-pull rod 20 slides to the most forward position, the distance between the two second rods 32 is the closest, which is convenient for the biological patch delivery system 100 to deliver the patch to the damaged site. When the patch reaches the damaged site to be treated, the push-pull rod 20 slides backward relative to the fixed rod 10, and the first rod 31, second rod 32, and third rod 33 rotate in sequence again to cause the two second rods 32 to gradually move away from each other, thereby driving the patch to unfold until the push-pull rod 20 returns to the initial position and the distance between the two second rods 32 is the farthest. At this time, with the help of the suture 300 passing through the wire threading hole 34, the patch is unfolded. Then the fixed rod 10 is moved so that the biological patch 200 is accurately attached to the tissue surface.

[0051] The biological patch delivery system 100 provided by the embodiment of the present utility model can be used to accurately position and place the biological patch 200 at the desired position, improving the positioning accuracy of the biological patch delivery system 100.

[0052] Exemplarily, the two relatively arranged expansion components 30 both include a first rod 31, a second rod 32, and a third rod 33 that are sequentially rotationally connected from the fixed rod 10 to the push-pull rod 20 and have parallel rotational axes. When the push-pull rod 20 slides, the two first rods 31, the two second rods 32, and the two third rods 33 all rotate, causing the two second rods 32 to move relatively closer or farther apart.

[0053] In other embodiments, one expansion component 30 includes a first rod 31, a second rod 32, and a third rod 33 that are sequentially rotationally connected from the fixed rod 10 to the push-pull rod 20 and have parallel rotational axes. The other relatively arranged expansion component 30 is a straight rod, and the straight rod is connected to the fixed rod 10. When the push-pull rod 20 slides, the second rod 32 moves relatively closer or farther away from the straight rod.

[0054] Exemplarily, the rotational connection methods between the fixed rod 10, the first rod 31, the second rod 32, the third rod 33, and the push-pull rod 20 are all riveting, but are not limited to riveting.

[0055] It can be understood that in the embodiments of the present invention, the distal end is also referred to as the front end, and the proximal end is also referred to as the rear end.

[0056] Exemplarily, the rear end of the fixed rod 10 is connected to the rear end of the push-pull rod 20. In other embodiments, the middle part of the fixed rod 10 is connected to the middle part of the push-pull rod 20.

[0057] Exemplarily, the push-pull rod 20 is a flat cuboid. The fixed rod 10 is a cylinder.

[0058] Exemplarily, the third rod 33 is rotationally connected to the middle part of the second rod 32, and the fixing part 321 is located at the front end part of the second rod 32. Exemplarily, the threading hole 34 is located at the front end part of the fixing part 321. Exemplarily, the threading hole 34 penetrates the fixing part 321 in the left-right direction.

[0059] Exemplarily, there are two fixed rods 10, and one expansion component 30 is connected to one fixed rod 10. The two fixed rods 10 can be an integral structure.

[0060] In other embodiments, there can be one fixed rod 10, and the two expansion components 30 are connected to the left and right sides of one fixed rod 10.

[0061] Reference Figure 4, in some embodiments, the distal end of the push rod 20 protrudes from the distal end of the fixed rod 10 along the sliding direction, and there is a protruding distance between the distal end of the push rod 20 and the distal end of the fixed rod 10. The push rod 20 has a first position with a large protruding distance and a second position with a small protruding distance. The two expansion assemblies 30 have an open state and a tightened state. When the push rod 20 is in the first position, the two expansion assemblies 30 are in the tightened state. When the push rod 20 is in the second position, the two expansion assemblies 30 are in the open state.

[0062] With such a setting, when the push rod 20 slides along the sliding direction, it protrudes from the fixed rod 10, preventing collision with the fixed rod 10 during sliding, and facilitating the change of the position of the push rod 20 so as to facilitate the change of the state of the two expansion assemblies 30.

[0063] Exemplarily, the front end of the push rod 20 is before the front end of the fixed rod 10, and the push rod 20 has an extra distance in the front-back direction compared to the fixed rod 10.

[0064] Exemplarily, when the push rod 20 moves from the first position to the second position, the push rod 20 slides backward, that is, the distance between the front end of the push rod 20 and the front end of the fixed rod 10 gradually decreases. When the push rod 20 moves from the second position to the first position, the push rod 20 slides forward, that is, the distance between the front end of the push rod 20 and the front end of the fixed rod 10 gradually increases.

[0065] Exemplarily, when the distance between the front end of the push rod 20 and the front end of the fixed rod 10 is the largest, the push rod 20 is in the first position, and the two expansion assemblies 30 are in the tightened state. When the distance between the front end of the push rod 20 and the front end of the fixed rod 10 is the smallest, the push rod 20 is in the second position, and the two expansion assemblies 30 are in the open state.

[0066] Reference Figure 2 and Figure 3 , in some embodiments, among the two expansion assemblies 30 in the tightened state, the first rod 31, the second rod 32 and the third rod 33 all extend along the sliding direction. Among the two expansion assemblies 30 in the open state, the first rod 31 is perpendicular to the fixed rod 10 and the second rod 32, and the third rod 33 is inclined relative to the first rod 31.

[0067] With such a setting, the push rod 20 causes the first rod 31, the second rod 32 and the third rod 33 to rotate in sequence, thereby changing their respective positions and angles, facilitating the folding and unfolding of the biological patch 200.

[0068] Exemplarily, when the two expansion assemblies 30 are in the tightened state, the first rod 31, the second rod 32 and the third rod 33 all extend in the front-back direction, and the first rod 31 and the third rod 33 of each expansion assembly 30 are located on the same straight line.

[0069] Exemplarily, when the two expansion components 30 are in the open state, the first rod 31 extends in the left-right direction, the third rod 33 is inclined in the left-right direction, and the second rod 32 extends in the front-back direction.

[0070] Reference Figure 4 , in some embodiments, the length of the third rod 33 is greater than the length of the first rod 31. The rotation axis of the first rod 31 relative to the fixed rod 10 and the rotation axis of the third rod 33 relative to the push-pull rod 20 are spaced apart along the sliding direction.

[0071] With such a setting, the rotation of the first rod 31 relative to the fixed rod 10 is not likely to collide with the rotation of the third rod 33 relative to the push-pull rod 20. The rotation angle of the third rod 33 is smaller than the rotation angle of the first rod 31, which facilitates the two second rods 32 to remain parallel during movement.

[0072] Exemplarily, the rotation angle range of the first rod 31 relative to the fixed rod 10 is 0° to 90°; the rotation angle range of the second rod 32 relative to the first rod 31 is 0° to 90°.

[0073] Reference Figure 4 , in some embodiments, the proximal end of the third rod 33 is provided with a convex portion. The convex portion faces the fixed rod 10 along the sliding direction. The two convex portions of the two expansion components 30 in the open state abut against each other, and the two convex portions of the two expansion components 30 in the tightened state are separated.

[0074] With such a setting, the abutment of the convex portions of the two third rods 33 can prevent the rotation angles of the two third rods 33 from being too large, which is beneficial to keeping the two second rods 32 in the two expansion components 30 in the open state parallel to each other.

[0075] Exemplarily, the proximal end of the first rod 31 can also be provided with a convex portion. When the first rod 31 is perpendicular to the fixed rod 10, the convex portions of the two first rods 31 abut against each other, preventing the rotation angles of the two first rods 31 from being too large, which is beneficial to keeping the two second rods 32 in the two expansion components 30 in the open state parallel to each other.

[0076] Reference Figure 5 , in some embodiments, a gear is provided at the proximal end of each third rod 33, and the gears at the proximal ends of the two third rods 33 mesh with each other. The meshing of the gears facilitates the switching of the two third rods 33 between the open state and the tightened state, and increases the stability of the expansion component 30 in the open state or the tightened state.

[0077] Exemplarily, the gear at the proximal end of the third rod 33 is an incomplete gear, which can prevent the rotation angles of the two third rods 33 from being too large.

[0078] Exemplarily, a gear is provided at the proximal end of each first rod 31, and the gears at the proximal ends of the two first rods 31 mesh with each other. The gear meshing increases the stability of the expansion assembly 30 during movement.

[0079] Exemplarily, the gear at the proximal end of the first rod 31 is also an incomplete gear, which can prevent the rotation angles of the two first rods 31 from being too large.

[0080] Reference Figure 6 and Figure 7 Referring to

[0081] In some embodiments, the biological patch delivery system 100 further includes a handle 40. The handle 40 has a receiving space 41. The proximal ends of the fixing rod 10 and the push-pull rod 20 are both located in the receiving space 41, and the fixing rod 10 is fixed to the handle 40. Card wire grooves 42 are formed on both sides of the handle 40, and the card wire grooves 42 are used to fix the suture 300 of the biological patch 200.

[0082] Exemplarily, at least one card wire groove 42 is formed on each of the left and right sides of the handle 40. The suture 300 for suturing and fixing the biological patch 200 can pass through the wire passing holes of the expansion assembly 30 and be fixed in the card wire grooves 42 on both sides of the handle 40.

[0083] Exemplarily, two card wire grooves 42 are formed on each of the left and right sides of the handle 40.

[0084] Reference Figure 8 Referring to

[0085] In some embodiments, the biological patch delivery system 100 further includes a driving member 50. The driving member 50 is connected to the proximal end of the push-pull rod 20, and the driving member 50 is used to control the sliding of the push-pull rod 20.

[0086] Exemplarily, the driving member 50 can be located on the handle 40.

[0087] Reference Figure 6 、 Figure 7 and Figure 8 Referring to

[0088] With such a setting, the extension length of the installation groove 43 is limited, and the front side and the rear side of the front section can abut against the driving member 50. Therefore, the installation groove 43 mechanically limits the driving member 50, making the stroke of the push-pull rod 20 limited and improving the position accuracy of the tightening and opening of the expansion assembly 30. The driving member 50 protrudes from the handle 40 for the convenience of doctors' use.

[0089] Exemplarily, the installation groove 43 extends in the front-rear direction.

[0090] Exemplarily, the installation groove 43 communicates with the accommodation space 41 in the up-down direction.

[0091] Exemplarily, the push-pull rod 20 is located above the fixed rod 10. An installation groove 43 is provided on the upper surface of the handle 40. The lower end of the driving member 50 is located in the accommodation space 41 and is connected to the push-pull rod 20. The rest of the driving member 50 passes through the installation groove 43 and protrudes from the upper surface of the handle 40.

[0092] Exemplarily, the driving member 50 can slide back and forth in the installation groove 43.

[0093] Exemplarily, the dimension of the part of the driving member 50 protruding from the upper surface of the handle 40 in the left-right direction is larger than the dimension of the installation groove 43, preventing the driving member 50 from completely entering the installation groove 43 and the interior of the accommodation space 41.

[0094] Reference Figure 8 and Figure 9 , in some embodiments, a protrusion 21 protrudes from the proximal end of the push-pull rod 20, and the protrusion 21 faces the installation groove 43. One end of the driving member 50 facing the push-pull rod 20 is provided with a groove 51, and the groove 51 cooperates with the protrusion 21 so that the driving member 50 drives the push-pull rod 20 to slide.

[0095] With such a setting, it is convenient to connect and fix the driving member 50 and the push-pull rod 20, and it is convenient for the driving member 50 to control the sliding of the push-pull rod 20.

[0096] In other embodiments, the driving member 50 and the push-pull rod 20 can also be connected by means such as bolt connection, snap connection, and buckle connection.

[0097] Reference Figure 7 and Figure 8 , in some embodiments, the installation groove 43 is provided with a clamping portion 431, and the clamping portion 431 is located on the side wall of the installation groove 43. The side wall of the driving member 50 is provided with a cooperating portion 52, and the cooperating portion 52 can be clamped to the clamping portion 431 so that the two expansion assemblies 30 maintain a stable open state.

[0098] With such a setting, when the clamping portion 431 cooperates with the cooperating portion 52, there is no need to continuously apply force to maintain the open state of the two expansion assemblies 30, increasing the stability of the open state, and thus enabling doctors to perform other operations more easily.

[0099] Exemplarily, a clamping portion 431 is provided on the left side wall of the installation groove 43, and a mating portion 52 is provided on the left side wall of the driving member 50.

[0100] Exemplarily, at least one clamping portion 431 is provided on the side walls on both the left and right sides of the installation groove 43, and at least one mating portion 52 is provided on the side walls on both the left and right sides of the driving member 50.

[0101] Exemplarily, the clamping portion 431 is a convex rib extending in the up and down direction, and the mating portion 52 is a recess extending in the up and down direction.

[0102] Exemplarily, the clamping portions 431 are located on both sides of the rear end portion of the installation groove 43.

[0103] The technical features of the above-disclosed embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0104] The above-disclosed embodiments only express several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A biological patch delivery system, characterized in that, Comprising: A fixed rod (10); A push-pull rod (20), arranged in parallel to and slidably connected to the fixed rod (10); And Two expansion components (30) arranged oppositely, wherein the expansion component (30) is connected to the distal end of the fixed rod (10) and has a threading hole (34) for a suture (300) of a biological patch (200) to pass through.

2. The biological patch delivery system according to claim 1, characterized in that, At least one of the expansion components (30) includes a first rod (31), a second rod (32), and a third rod (33) that are sequentially rotatably connected from the fixed rod (10) to the push-pull rod (20) and whose rotation axes are parallel to each other; the second rod (32) includes a fixing portion (321) with the threading hole (34) that extends and protrudes from the third rod (33).

3. The biological patch delivery system according to claim 2, wherein, The distal end of the push-pull rod (20) protrudes from the distal end of the fixed rod (10) along the sliding direction, and there is a protruding distance between the distal end of the push-pull rod (20) and the distal end of the fixed rod (10); the push-pull rod (20) has a first position with a large protruding distance and a second position with a small protruding distance; The push-pull rod (20) in the first position makes the two expansion components (30) in a tightened state; the push-pull rod (20) in the second position makes the two expansion components (30) in an open state.

4. The biological patch delivery system according to claim 3, wherein Among the two expansion components (30) in the tightened state, the first rod (31), the second rod (32), and the third rod (33) all extend along the sliding direction; among the two expansion components (30) in the open state, the first rod (31) is perpendicular to the fixed rod (10) and the second rod (32), and the third rod (33) is inclined relative to the first rod (31).

5. The biological patch delivery system according to claim 4, wherein The length of the third rod (33) is greater than the length of the first rod (31); The rotation axis of the first rod (31) relative to the fixed rod (10) and the rotation axis of the third rod (33) relative to the push-pull rod (20) are spaced apart along the sliding direction.

6. The biological patch delivery system according to claim 2, wherein It further includes a handle (40), the handle (40) has a receiving space (41), the proximal ends of the fixed rod (10) and the push-pull rod (20) are both located in the receiving space (41), and the fixed rod (10) is fixed to the handle (40); Both sides of the handle (40) are provided with wire clamping grooves (42), and the wire clamping grooves (42) are used to fix the suture (300) of the biological patch (200).

7. The biological patch delivery system according to claim 6, characterized in that, It further includes a driving member (50), the driving member (50) is connected to the proximal end of the push-pull rod (20), and the driving member (50) is used to control the sliding of the push-pull rod (20).

8. The biological patch delivery system according to claim 7, wherein The handle (40) is provided with a mounting groove (43) that exposes a part of the push-pull rod (20), and the mounting groove (43) extends along the sliding direction; The driving member (50) passes through the mounting groove (43) and protrudes from the handle (40).

9. The biological patch delivery system according to claim 8, wherein, The proximal end of the push-pull rod (20) is convexly provided with a protrusion (21), and the protrusion (21) faces the mounting groove (43); One end of the driving member (50) facing the push rod (20) is provided with a groove (51), and the groove (51) is engaged with the protrusion (21) so that the driving member (50) can drive the push rod (20) to slide.

10. The biological patch delivery system according to claim 9, wherein, The mounting groove (43) is provided with a clamping portion (431), and the clamping portion (431) is located on the side wall of the mounting groove (43); The side wall of the driving member (50) is provided with a mating portion (52), and the mating portion (52) can be clamped to the clamping portion (431) so that the two expansion assemblies (30) are kept in a stable open state.

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