Tendon anchor implanting system

Abstract

The invention relates to the technical field of medical instruments, and discloses a tendon anchor implanting system. The tendon anchor implanting system comprises a drill rod, an inner core rod and an implanting rod, wherein the implanting rod is provided with a first guide hole; the tendon anchor nail is provided with a through second guide hole, the first end of the inner core rod penetrates through the first guide hole and the second guide hole, one end of the drill rod is connected to the first end of the inner core rod, and the other end of the drill rod is conical and extends out of the second guide hole; the tendon anchor comprises a fixing base and a nail body which are connected with each other, the implanting rod abuts against the fixing base, the fixing base is used for fixing a patch, and barb protrusions are arranged on the side wall of the nail body. Compared with the prior art, a pre-penetrating point does not need to be arranged on the rotator cuff, a lead does not need to be pulled, damage to the rotator cuff is reduced, patch fixing is achieved, the tendon anchor is matched with the implanting device, the implanting process can be rapidly and conveniently completed, the operation efficiency is improved, and the operation time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a tendon anchor implantation system. Background Art

[0002] Rotator cuff joint repair usually uses a patch sutured between the greater tuberosity and the glenoid to achieve the connection between the greater tuberosity and the glenoid, thereby restoring the upper joint capsule structure and achieving the effect of pressing down the humeral head. During the operation, the doctor first sutures the patch to connect the suture to the patch, and then passes one end of the suture through the anchor and the threaded hole pre-opened on the greater tuberosity to fix the anchor on the greater tuberosity, while the other end of the suture is connected to the tendon. In this way, the patch can be stretched between the greater tuberosity and the glenoid to achieve the repair of the rotator cuff joint.

[0003] Existing rotator cuff repair surgery has the following technical problems:

[0004] 1. Rotator cuff repair surgery uses arthroscopy. After the rotator cuff tear is pre-sutured, the distance between the pre-implanted sutures on both sides can only be determined based on the physician's experience. There are no measuring instruments or reference objects in the joint cavity, and the position of the pre-piercing point is difficult to control. If the reserved suture point is too large, the suture will be tightened when the knot is tied, which will cause further damage to the rotator cuff assembly. If the point distance is too small, the fixed patch will not have an auxiliary fixation effect because there is no tension.

[0005] Second, the sutures used to sew the rotator cuff and the patch need to be knotted and fixed. When tying the knot, due to the difference between the threading point of the rotator cuff soft tissue and the threading point on the patch, the suture needs to be pulled so that the patch reaches the suture point and then knotted. This pulling of the suture will cause the risk of cutting the rotator cuff soft tissue. In addition, a suture knotter is required for knotting. The suture needs to be tightened to resist the knotter, which will damage the rotator cuff at the injured site again.

[0006] 3. After fixing the four corner points of the patch, the side edges need to be sutured and fixed, and a wire guide is used to horizontally pass through the two entry and exit points of the rotator cuff tissue, which increases the damage to the rotator cuff.

[0007] Based on this, there is an urgent need for a tendon anchor implantation system to solve the above-mentioned problems. Summary of the invention

[0008] Based on the above, the purpose of the present invention is to provide a tendon anchor implantation system, which reduces damage to the rotator cuff and achieves fixation of the patch. The tendon anchor cooperates with the implanter to quickly and conveniently complete the implantation process, thereby improving surgical efficiency and shortening surgical time.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] A tendon anchor implantation system, comprising:

[0011] The implanter comprises an inner core rod, an implant rod and a drill rod, wherein the implant rod is provided with a first guide hole;

[0012] A tendon anchor, wherein the tendon anchor is provided with a second guide hole passing through, the first end of the inner core rod is passed through the first guide hole and the second guide hole, one end of the drill rod is connected to the first end of the inner core rod, and the other end is conical and extends out of the second guide hole;

[0013] The tendon anchor comprises a fixing seat and a nail body which are connected to each other. The implant rod abuts against the fixing seat. The fixing seat is used to fix the patch. The side wall of the nail body is provided with a barbed protrusion.

[0014] As a preferred technical solution of a tendon anchor implantation system, the implanter further comprises an inner rod handle and an outer rod handle, the inner rod handle is provided with a slide groove, and the outer rod handle is slidably connected in the slide groove;

[0015] A first connecting hole is provided at the bottom of the slide groove, and one end of the inner core rod away from the tendon anchor is passed through the slide groove and connected to the first connecting hole;

[0016] The outer rod handle is provided with a second connecting hole, and one end of the implant rod away from the tendon anchor is connected to the second connecting hole.

[0017] As a preferred technical solution for a tendon anchor implantation system, the inner wall of the slide groove is provided with a first limiting protrusion, and the outer wall of the outer rod handle is provided with a second limiting protrusion, the second limiting protrusion is located between the first limiting protrusion and the bottom of the slide groove, and when the inner core rod is separated from the second guide hole, the first limiting protrusion is used to stop the second limiting protrusion.

[0018] As a preferred technical solution for a tendon anchor implantation system, the outer rod handle is provided with a disc portion, and when the implantation rod abuts against the fixing seat, the disc portion stops the notch end surface of the slide groove.

[0019] As a preferred technical solution of a tendon anchor implantation system, the drill rod and the inner core rod are integrally formed; or

[0020] The first end of the inner core rod is provided with a third connecting hole, and the drill rod is connected to the third connecting hole.

[0021] As a preferred technical solution for a tendon anchor implantation system, the outer wall of the inner rod handle is provided with an anti-slip structure.

[0022] As a preferred technical solution for a tendon anchor implantation system, the barbed protrusion is in the shape of a fish fin.

[0023] As a preferred technical solution for a tendon anchor implantation system, the width of the barbed protrusion along the radial cross section of the nail body gradually decreases from the root to the top.

[0024] As a preferred technical solution for a tendon anchor implantation system, the fixing seat is provided with a plurality of claws extending toward one side of the nail body.

[0025] As a preferred technical solution for a tendon anchor implantation system, the end of the nail body away from the fixing seat is in a truncated cone shape.

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides a tendon anchor implantation system. Before an operation, the first end of an inner core rod is inserted into a first guide hole of an implantation rod and a second guide hole of a tendon anchor. One end of a drill rod is connected to the first end of the inner core rod, and the other end is conical and extends out of the second guide hole. The implantation rod abuts against a fixing seat, thereby realizing the connection between the tendon anchor and the implanter.

[0028] When it is necessary to implant the tendon anchor into the rotator cuff, the conical end of the drill rod is used to pierce the tendon tissue first, and an implantation path is opened in advance for the implantation of the tendon anchor; the implantation rod abuts against the fixing seat of the tendon anchor, and an axial force is applied to the implantation rod, and its axial force is transmitted to the head end of the implantation rod, indirectly acting on the fixing seat of the tendon anchor, so that the tendon anchor is implanted into the tendon; after the tendon anchor is completely implanted into the tendon, the inner core rod is pulled back axially, and at the same time, the implantation rod remains fixed, and the implantation rod provides an inward antagonistic force for the tendon anchor to prevent the tendon anchor from being pulled out and facilitate the pulling out of the inner core rod; moreover, since the side wall of the nail body is provided with a barbed protrusion, the barbed protrusion increases the friction between the tendon anchor and the implantation path of the tendon, and the tendon anchor will not be pulled out, further improving the stability of the tendon anchor in the tendon, and the fixing seat fixes the patch to the surface of the tendon, realizing the implantation and fixation of the patch. Compared with the prior art, the present invention does not need to set a pre-puncture point on the rotator cuff, does not need to pull the lead wire, reduces the damage to the rotator cuff, and achieves the fixation of the patch. The tendon anchor cooperates with the implanter to quickly and conveniently complete the implantation process, thereby improving the surgical efficiency and shortening the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1 is a schematic structural diagram of a tendon anchor implantation system provided in a specific embodiment of the present invention;

[0031] Figure 2 is a structural exploded diagram of a tendon anchor implantation system provided in a specific embodiment of the present invention;

[0032] Figure 3 is a cross-sectional view of a tendon anchor implantation system provided in a specific embodiment of the present invention;

[0033] Figure 4 yes Figure 3 A magnified view at point A;

[0034] Figure 5 It is a schematic diagram of the structure of a tendon anchor provided in a specific embodiment of the present invention.

[0035] The following are marked in the figure:

[0036] 1. implanter; 11. drill rod; 12. inner core rod; 121. third connecting hole; 13. implant rod; 131. first guide hole; 14. inner rod handle; 141. slide groove; 142. first connecting hole; 143. first limiting protrusion; 144. anti-slip structure; 15. outer rod handle; 151. second connecting hole; 152. second limiting protrusion; 153. disc portion;

[0037] 2. tendon anchor; 21. second guide hole; 22. fixing seat; 221. claw; 23. nail body; 231. barbed protrusion. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figure 1-Figure 5 As shown, this embodiment provides a tendon anchor implantation system, which includes an implanter 1 and a tendon anchor 2. Specifically, the implanter 1 includes a drill rod 11, an inner core rod 12 and an implant rod 13, and the implant rod 13 is provided with a first guide hole 131; the tendon anchor 2 is provided with a second guide hole 21 that penetrates through, and the first end of the inner core rod 12 is penetrated through the first guide hole 131 and the second guide hole 21, one end of the drill rod 11 is connected to the first end of the inner core rod 12, and the other end is conical and extends out of the second guide hole 21; the tendon anchor 2 includes a fixing seat 22 and a nail body 23 that are connected to each other, and the implant rod 13 abuts against the fixing seat 22, and the fixing seat 22 is used to fix the patch, and the side wall of the nail body 23 is provided with a barbed protrusion 231. In this embodiment, the inner diameter of the first guide hole 131 coincides with the diameter of the inner core rod 12.

[0043] Before the operation, the first end of the inner core rod 12 is inserted into the first guide hole 131 of the implant rod 13 and the second guide hole 21 of the tendon anchor 2; one end of the drill rod 11 is connected to the first end of the inner core rod 12, and the other end is conical and extends out of the second guide hole 21; the implant rod 13 abuts against the fixing seat 22, thereby realizing the connection between the tendon anchor 2 and the implanter 1. When the tendon anchor 2 needs to be implanted into the rotator cuff, the conical end of the drill rod 11 is used to first pierce the tendon tissue, thereby pre-opening an implantation path for the implantation of the tendon anchor 2; the implant rod 13 abuts against the fixing seat 22 of the tendon anchor 2, and an axial force is applied to the implant rod 13, and the axial force is transmitted to the head end of the implant rod 13, indirectly acting on the fixing seat 22 of the tendon anchor 2, so that the tendon anchor 2 is implanted into the tendon; after the tendon anchor 2 is completely implanted into the tendon, the inner core rod 12 is pulled back axially, and at the same time, the implant The rod 13 remains fixed, and the implant rod 13 provides an inward antagonistic force for the tendon anchor 2, preventing the tendon anchor 2 from being pulled out, and facilitating the pulling out of the inner core rod 12; moreover, since the side wall of the nail body 23 is provided with a barbed protrusion 231, the barbed protrusion 231 increases the friction between the tendon anchor 2 and the implantation tract of the tendon, and the tendon anchor 2 will not be brought out, further improving the stability of the tendon anchor 2 in the tendon, and the fixing seat 22 fixes the patch to the surface of the tendon, realizing the implantation and fixation of the patch. Compared with the prior art, this embodiment does not need to set a pre-piercing point on the rotator cuff, does not need to pull the lead wire, reduces the damage to the rotator cuff, and realizes the fixation of the patch. The tendon anchor 2 cooperates with the implanter 1 to quickly and conveniently complete the implantation process, improves the surgical efficiency, and shortens the surgical time.

[0044] Preferably, if Figure 1-Figure 3 As shown, the implanter 1 further includes an inner rod handle 14 and an outer rod handle 15, wherein the inner rod handle 14 is provided with a slide groove 141, and the outer rod handle 15 is slidably connected in the slide groove 141; a first connecting hole 142 is provided at the bottom of the slide groove 141, and one end of the inner core rod 12 away from the tendon anchor 2 is passed through the slide groove 141 and connected to the first connecting hole 142; the outer rod handle 15 is provided with a second connecting hole 151, and one end of the implant rod 13 away from the tendon anchor 2 is connected to the second connecting hole 151. The staff can hold the inner rod handle 14 or the outer rod handle 15, and when the inner rod handle 14 and the outer rod handle 15 slide relative to each other, it is convenient to drive the inner core rod 12 to slide relative to the first guide hole 131 of the implant rod 13, thereby improving the convenience of operation.

[0045] Preferably, the inner wall of the slide groove 141 is provided with a first limiting protrusion 143, and the outer wall of the outer rod handle 15 is provided with a second limiting protrusion 152, and the second limiting protrusion 152 is located between the first limiting protrusion 143 and the groove bottom of the slide groove 141. When the inner core rod 12 is separated from the second guide hole 21, the first limiting protrusion 143 is used to stop the second limiting protrusion 152. In the process of pulling out the inner rod handle 14, the inner core rod 12 is pulled out, and the outer rod handle 15 and the implant rod 13 remain stationary. When the inner core rod 12 is separated from the second guide hole 21, the first limiting protrusion 143 stops the second limiting protrusion 152, and the inner rod handle 14 continues to be pulled out. At this time, the inner rod handle 14 and the outer rod handle 15 are pulled out together, and the implanter 1 and the tendon anchor 2 are separated.

[0046] In this embodiment, the first limiting protrusion 143 and the second limiting protrusion 152 are both annular bosses, and the cross-section of the first limiting protrusion 143 and the second limiting protrusion 152 is a trapezoidal barb structure. During assembly, the outer rod handle 15 and the inner rod handle 14 are coaxially assembled, and the outer rod handle 15 and the inner rod handle 14 are interference assembled under the action of pressure. The outer rod handle 15 and the inner rod handle 14 are plastically deformed so that the second limiting protrusion 152 passes through the first limiting protrusion 143. After the second limiting protrusion 152 passes, the outer rod handle 15 and the inner rod handle 14 restore their deformation, thereby realizing the connection between the outer rod handle 15 and the inner rod handle 14, making it difficult for the two to be disassembled.

[0047] Further preferably, the outer rod handle 15 is provided with a disc portion 153, and when the implant rod 13 abuts against the fixing seat 22, the disc portion 153 stops the notch end surface of the slide groove 141. On the one hand, the first limiting protrusion 143 is located between the disc portion 153 and the second limiting protrusion 152 to prevent the outer rod handle 15 from being separated from the inner rod handle 14; on the other hand, during the implantation process, the inner rod handle 14 is struck, and the inner rod handle 14 abuts against the disc portion 153, so that the striking force on the inner rod handle 14 is transmitted to the outer rod handle 15, and then transmitted to the tendon anchor 2 through the head of the outer rod handle 15. In this embodiment, the diameter of the disc portion 153 matches the outer diameter of the inner rod handle 14.

[0048] In this embodiment, the first end of the inner core rod 12 is provided with a third connection hole 121, and the drill rod 11 is connected to the third connection hole 121, specifically by welding. In other embodiments, the drill rod 11 and the inner core rod 12 can also be integrally formed.

[0049] Preferably, the outer wall of the inner handle 14 is provided with an anti-slip structure 144, and the outer wall of the inner handle 14 forms a grip portion, which increases the friction between the hand and the grip portion when the inner handle 14 is pulled out. In this embodiment, the anti-slip structure 144 includes a plurality of bosses or grooves arranged around the outer wall of the inner handle 14.

[0050] Furthermore, if Figure 4 and Figure 5 As shown, the barb protrusion 231 on the side wall of the nail body 23 is fin-shaped. In this embodiment, the side wall of the nail body 23 is provided with two barb protrusions 231, and the barb protrusions 231 enable the nail body 23 of the tendon anchor 2 to be barbed inside the tendon after being implanted into the tendon to prevent it from coming out.

[0051] Preferably, the width of the cross section of the barb protrusion 231 along the radial direction of the nail body 23 gradually decreases from the root to the top. The cross section of the barb protrusion 231 along the radial direction of the nail body 23 is a trapezoidal structure. On the one hand, during the implantation of the tendon anchor 2 into the tendon, it is convenient to expand the tendon entrance without cutting the tendon; on the other hand, it increases the connection strength between the barb protrusion 231 and the nail body 23.

[0052] In this embodiment, the fixing seat 22 is provided with a plurality of claws 221 extending toward one side of the nail body 23. Specifically, the fixing seat 22 is a three-claw structure, and the claws 221 can fix the patch and connect the patch to the tendon anchor, and the implantation positioning point can be precisely controlled.

[0053] Further preferably, the end of the nail body 23 away from the fixing seat 22 is in a truncated cone shape. The circular cross section of the end of the nail body 23 away from the fixing seat 22 gradually decreases, so as to facilitate the implantation of the nail body 23 into the tendon.

[0054] It should be noted that if Figure 1-Figure 5 As shown, this embodiment also provides the working principle of the tendon anchor implantation system. When the tendon anchor 2 needs to be implanted into the rotator cuff, the drill rod 11 is used to first pierce the tendon tissue to pre-open an implantation path for the implantation of the tendon anchor 2; the fixing seat 22 of the tendon anchor 2 contacts the head end of the implantation rod 13, axially knocks the bottom end face of the gripping portion of the inner rod handle 14, and its axial force is transmitted to the head end of the implantation rod 13, indirectly acting on the fixing seat 22 of the tendon anchor 2, so that the tendon anchor 2 is implanted. into the tendon; after the tendon anchor 2 is completely implanted in the tendon, the claw 221 of the fixing seat 22 connects the patch and the tendon anchor together, and the gripping portion of the inner rod handle 14 is pulled back axially. At the same time, the outer rod handle 15 remains fixed, so that the tendon anchor 2 is subjected to an inward resistance force, which facilitates the pushing out of the inner rod, and the tendon anchor 2 is not easily brought out when the implanter 1 is pulled out; at this time, since the nail body 23 of the tendon anchor 2 has a barb structure, the tendon anchor 2 will not be brought out, and the implantation of the tendon anchor 2 is completed.

[0055] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A tendon anchor implantation system, It is characterized in that include: An implanter (1) comprises an inner core rod (12), an implant rod (13) and a drill rod (11), wherein the implant rod (13) is provided with a first guide hole (131); A tendon anchor (2), wherein the tendon anchor (2) is provided with a penetrating second guide hole (21), the first end of the inner core rod (12) is inserted into the first guide hole (131) and the second guide hole (21), one end of the drill rod (11) is connected to the first end of the inner core rod (12), and the other end is conical and extends out of the second guide hole (21); The tendon anchor (2) comprises a fixing seat (22) and a nail body (23) which are connected to each other. The implant rod (13) abuts against the fixing seat (22). The fixing seat (22) is used to fix the patch. The side wall of the nail body (23) is provided with a barbed protrusion (231).

2. The tendon anchor implantation system according to claim 1, It is characterized in that The implanter (1) further comprises an inner rod handle (14) and an outer rod handle (15), wherein the inner rod handle (14) is provided with a slide groove (141), and the outer rod handle (15) is slidably connected in the slide groove (141); A first connecting hole (142) is provided at the bottom of the slide groove (141); an end of the inner core rod (12) away from the tendon anchor (2) is passed through the slide groove (141) and connected to the first connecting hole (142); The outer rod handle (15) is provided with a second connection hole (151), and one end of the implant rod (13) away from the tendon anchor (2) is connected to the second connection hole (151).

3. The tendon anchor implantation system according to claim 2, It is characterized in that The inner wall of the slide groove (141) is provided with a first limiting protrusion (143), and the outer wall of the outer rod handle (15) is provided with a second limiting protrusion (152). The second limiting protrusion (152) is located between the first limiting protrusion (143) and the bottom of the slide groove (141). When the inner core rod (12) is separated from the second guide hole (21), the first limiting protrusion (143) is used to stop the second limiting protrusion (152).

4. The tendon anchor implantation system according to claim 2, It is characterized in that The outer rod handle (15) is provided with a disc portion (153), and when the implant rod (13) abuts against the fixing seat (22), the disc portion (153) blocks the notch end surface of the slide groove (141).

5. The tendon anchor implantation system according to claim 1, It is characterized in that The drill rod (11) and the inner core rod (12) are integrally formed; or The first end of the inner core rod (12) is provided with a third connecting hole (121), and the drill rod (11) is connected to the third connecting hole (121).

6. The tendon anchor implantation system according to claim 2, It is characterized in that The outer wall of the inner rod handle (14) is provided with an anti-slip structure (144).

7. The tendon anchor implantation system according to any one of claims 1 to 6, It is characterized in that The barbed protrusion (231) is in the shape of a fish fin.

8. The tendon anchor implantation system according to any one of claims 1 to 6, It is characterized in that The width of the cross section of the barbed protrusion (231) along the radial direction of the nail body (23) gradually decreases from the root to the top.

9. The tendon anchor implantation system according to any one of claims 1 to 6, It is characterized in that The fixing seat (22) is provided with a plurality of claws (221) extending toward one side of the nail body (23).

10. The tendon anchor implantation system according to any one of claims 1 to 6, It is characterized in that One end of the nail body (23) away from the fixing seat (22) is in a truncated cone shape.

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