Toolkit for Tendon Dexterity Implant Placement

Abstract

A tool kit for minimally invasive implantation of a tendon fixation implant comprising an inner anchor (13), an outer anchor (23), and a base plate (51) in the field of arthroscopic medicine, the tool kit comprising an inner anchor inserter (10), the inner anchor inserter (10) comprising an inner anchor drive mandrel (11) and an inner anchor release tube (12), the inner anchor release tube (12) being designed to receive the inner anchor drive mandrel (11), the inner anchor drive mandrel (11) being designed to perform both receiving the inner anchor (13) and inserting the inner anchor (13) into bone, the inner anchor drive mandrel (11) having a locking head (16) for fixing the inner anchor drive mandrel (11) to the inner anchor release tube (12), the tool kit.

Description

Detailed Description of the Invention

[0001] The present invention relates to the technical field of tools for minimally invasive implantation of tenodesis implants in the field of arthroscopic medicine, and to a corresponding system comprising a tenodesis implant and a tool kit for minimally invasive implantation of tenodesis implants.

[0002] Various tools for introducing implants are already known. For example, documents EP 3 020 371 A2 and EP 2 020 372 A1 disclose instruments that can be used for minimally invasive interventions in tendon surgery. Tendon fixation implants are also known, for example, from CA 3 186 602 A1. Document EP 3 184 078 A1 discloses an implant for planar attachment of tissue to bone as well as a corresponding system for attaching tissue to bone, comprising at least one implant and at least one tool, the tool comprising gripping means and a shaft arranged for interlocking rotation thereon.

[0003] Continuing from the prior art, the technical object of the present invention is to provide the possibility to introduce a tendon fixation implant in a manner that requires less effort and time.

[0004] In the context of the present invention, anchor should be understood as meaning a bone anchor, in particular a hollow anchor for bone.

[0005] Furthermore, in the context of the present invention, an inserter should be understood to mean an arthroscopic insertion tool.

[0006] Furthermore, in the context of the present invention, an inlay should be understood as meaning a holding device for receiving and releasing at least one anchor. The inlay is part of the package and serves to reliably protect the anchor and base plate from damage during storage or transport. Furthermore, the inlay ensures easy removal of the tendon fixation implant. The anchor is held in place by elastic deformation of the inlay's receiving part, and the base plate is held in place by a cap.

[0007] According to one aspect, the technical object of the present invention is achieved by a tool kit for minimally invasive implantation of a tenodesis implant in the field of arthroscopic medicine. The tenodesis implant comprises a medial anchor, a lateral anchor, and a base plate. The tool kit comprises a medial anchor inserter. The medial anchor inserter comprises a medial anchor drive mandrel and a medial anchor release tube. The medial anchor release tube is designed to receive the medial anchor drive mandrel. The medial anchor drive mandrel is designed to both receive the medial anchor and introduce the medial anchor into bone. The medial anchor drive mandrel has a locking head for securing the medial anchor drive mandrel to the medial anchor release tube.

[0008] Advantageously, at least part of the tenodesis implant can thus be introduced in a particularly time-efficient manner. The inner anchor can be received by an inner anchor drive mandrel, which can enable precise placement / rapid driving of the inner anchor on / into the bone. In this case, the locking head provides good possibilities for stably fastening the anchor drive mandrel to the inner anchor release tube. This can significantly reduce the time required to perform a surgical intervention or to introduce the tenodesis implant.

[0009] The toolkit is The base plate inserter, handpiece, and base plate inserter tube Further preparation the base plate inserter tube is designed to receive the base plate of the tenodesis plate and to at least partially introduce the base plate into tissue or bone, and the medial anchor inserter is designed to receive the handpiece and the medial anchor inserter within the base plate inserter tube; Releasable The stop clip temporarily prevents full penetration of the medial anchor inserter into the base plate inserter.

[0010] Advantageously, this can additionally facilitate a particularly time-efficient introduction of at least a portion of the tenodesis implant: the base plate can be stably and precisely introduced into the implantation position, and the portion of the tenodesis implant can be fastened in stages by means of the stop clips, which further has an advantageous effect on the precision of the surgical intervention.

[0011] In a further technically advantageous embodiment, it is provided that both the inner anchor release tube and the base plate inserter are formed with respective collars.

[0012] Advantageously, such a collar offers the possibility, for example, of enabling an interlocking engagement with any additional element, which can be used, on the one hand, to allow a defined insertion depth of the base plate inserter into the inner anchor release tube, and, on the other hand, to inhibit dislodgement.

[0013] In a further technically advantageous embodiment, it is provided that the stop clip is designed as a position-fixing bridge and / or a collar is designed to prevent a possible axial offset between the inner anchor release tube and the base plate inserter by an interlocking mechanism.

[0014] In this way, it is possible to create a bond that can be advantageously quickly and easily closed or released, which has the further advantageous effect of accelerating the surgical intervention.

[0015] Additionally, in one technically advantageous embodiment, a stopper clip But, It is provided that it is designed to be releasable, in particular to be extractable.

[0016] As a result, it is possible to eliminate the need for a complex holding mechanism, thereby simplifying the construction of the tool kit.

[0017] In a further technically advantageous embodiment, it is provided that the stop clip is designed, in particular with a slot, so that the first depth of insertion of the inner anchor into the bone is adjustable.

[0018] As a result, the introduction of the tenodesis implant can be flexible and appropriately adapted to all requirements.

[0019] In an additional technically advantageous embodiment, the tool kit further comprises an outer anchor inserter comprising an outer anchor drive mandrel and an outer anchor release tube designed to receive the outer anchor drive mandrel and the outer anchor drive mandrel designed to receive and introduce the outer anchor into bone.

[0020] Advantageously, this can additionally facilitate a particularly time-efficient introduction of at least a portion of the tenodesis implant. The outer anchor can be received by an inner anchor drive mandrel, which can allow for precise placement / rapid driving of the outer anchor on / into the bone. As a result, the time required to perform a surgical intervention or to introduce the tenodesis implant can additionally be significantly reduced.

[0021] Furthermore, in one technically advantageous embodiment, it is provided that the inner anchor release tube is designed to bear against the support contour of the inner anchor, in particular the collar surface, at its end face.

[0022] Advantageously, the force acting on the inner anchor and to be applied to drive it into the bone can be distributed evenly over a large area and on the end face of the inner anchor, minimizing any damage during insertion. The inner anchor can thus be easily and quickly inserted into the bone, which allows for additional time savings.

[0023] Furthermore, it is provided that the end surface of the inner anchor release tube and the support contour of the inner anchor, specifically the collar surface, form a first pushing mechanism, which enables the inner anchor to be released from the inner anchor drive mandrel.

[0024] Thus, advantageously, the inner anchor can be quickly and reliably released from the inner anchor drive mandrel after introduction into the bone, while the position of the inner anchor within the bone can be fixed.

[0025] It is further provided that the outer anchor release tube is designed to bear against a support contour, in particular a collar surface, of the outer anchor at its end face.

[0026] Advantageously, the force acting on the outer anchor and to be applied to drive it into the bone can be distributed evenly over a large area and on the end face of the outer anchor, minimizing damage that may occur during insertion. Thus, the outer anchor can be easily and quickly inserted into the bone, which allows for additional time savings.

[0027] It is further provided that the end face of the outer anchor release tube (22) and the support contour of the outer anchor (23), in particular the collar surface, form a second pushing mechanism, which enables the outer anchor (23) to be released from the outer anchor drive mandrel (21).

[0028] Thus, advantageously, the outer anchor can be quickly and reliably released from the outer anchor drive mandrel after introduction into the bone, while the position of the outer anchor within the bone can be fixed.

[0029] Additionally, in one technically advantageous embodiment, the tool kit further comprises a follow-up strike tool, the follow-up strike tool comprising a follow-up strike drive mandrel and a follow-up strike handpiece.

[0030] This advantageously allows for further driving of the anchors of the tendon fixation implant.

[0031] Additionally, in one technically advantageous embodiment, the tool kit further comprises a trocar.

[0032] This provides the advantage of allowing the surgeon to open the wound tract during the surgical introduction of the tenodesis implant and to keep the wound tract open during the intervention.

[0033] In an additional technically advantageous embodiment, the tool kit further comprises an inlay designed to receive the tenodesis plate, the medial anchor, and the lateral anchor, the inlay having indicia for clearly distinguishing the anchors.

[0034] This has a beneficial effect on the rapid performance of the surgical intervention, since it is possible to quickly distinguish between medial and lateral anchors and to select the correct anchor for each part of the intervention, and thus at least the individual elements of the tenodesis implant can be transported safely and in a manner protected from damage or contamination.

[0035] It is further provided that the inner and / or outer anchors can be introduced into the bone without the use of holes, in particular without the use of pilot holes.

[0036] Advantageously, additional work steps can thus be avoided, allowing for additional time savings.

[0037] According to a further aspect, the technical object of the present invention is to provide a system comprising a tenodesis implant with an inner anchor, an outer anchor and a base plate, and a tool kit for minimally invasive implantation of the tenodesis implant. It is achieved.

[0038] In this way, accelerated and rapid surgical intervention to fix the tissue to the bone can additionally be advantageously enabled.

[0039] Exemplary embodiments of the invention are illustrated in the drawings and are explained in more detail below.

[0040] All of the features discussed in connection with individual embodiments of the invention may be provided in various combinations in the subject matter according to the invention in order to simultaneously realize their advantageous effects.

[0041] The scope of protection of the present invention is defined by the claims and is not limited by the features described in the specification or shown in the drawings.

[0042] The drawings are as follows: [Brief explanation of the drawings]

[0043] [Figure 1] 1 shows a schematic diagram of a system with a tool kit and a tenodesis implant attached to the tool kit. [Figure 2] 13 shows a schematic detail view of the tip of the medial anchor inserter. [Figure 3] 1 shows a schematic detail view of the tip of the outer anchor inserter. [Figure 4] 1 shows a schematic diagram of a stopper clip. DETAILED DESCRIPTION OF THE INVENTION

[0044] FIG. 1 shows a schematic diagram of a system with a tool kit for minimally invasive implantation of a tenodesis implant, with the tenodesis implant shown positioned on the tool kit.

[0045] Here, the tenodesis implant shown comprises an inner anchor 13 with an inner anchor head 14 , a base plate 51 and an outer anchor 23 .

[0046] The illustrated tool kit includes a trocar 40 having a trocar tube 41, a drive tool 30 having a drive mandrel 31 and a drive handpiece 32, and an outer anchor inserter 20 having an outer anchor drive mandrel 21 and an outer anchor release tube 22. The illustrated tool kit also includes an inner anchor inserter handpiece 17, an inner anchor inserter 10 having an inner anchor drive mandrel 11, an inner anchor release tube 12, a locking head 16, and a stopper clip 15 having a slot 18.

[0047] Also shown are a collar 61 of the release tube and a collar 62 of the base plate inserter. The stopper clip 15 is designed as a position-fixing bridge and, in cooperation with the collars 61, 61, prevents possible axial offset between the medial anchor release tube 12 and the base plate inserter 52 by an interlocking mechanism. This makes it possible to prevent, for example, the medial anchor from being inserted too deeply into the bone (not shown).

[0048] In the interaction between the individual elements of the medial anchor inserter, the action of a force introduced onto the locking head 16 first allows the medial anchor to be partially introduced into the bone (not shown in FIG. 1 ), and by means of the slot 18 of the stopper clip 15 and subsequently as a result of removing the stopper clip 15, the medial anchor can be further introduced into said bone. In addition, in order to obtain greater versatility in the surgical intervention, it is conceivable that the slot width of the slot 18 can be made adjustable by means of a mechanism (not defined in more detail), for example an adjusting screw.

[0049] The stopper clip 15 is designed to be releasable and removable, allowing the surgeon to work quickly by easily and time-efficiently withdrawing it radially relative to the anchor inserter 10. The outer anchor 23 can then be similarly quickly introduced into the bone by the outer anchor inserter 20.

[0050] Figure 2 shows a schematic detail view of the tip of the medial anchor inserter 10 shown in Figure 1. The medial anchor 13 is held threaded onto the medial anchor drive mandrel 12, which is shown inserted into the medial anchor release tube 12. For its part, the medial anchor release tube 12 is shown inserted into a base plate inserter 52, on which a base plate 51 is located. The base plate 51 has an opening, not defined in further detail, through which the outer anchor 23 shown in Figure 1 or 3 can be quickly introduced into the outer anchor inserter 20.

[0051] It is also shown that the inner anchor release tube 12 is designed at its end face (not defined in more detail) to bear against the support contour, e.g., collar surface, of the inner anchor 13. This is shown analogously for the outer anchor release tube and outer anchor in Figure 3, where the outer anchor release tube is designed at its end face (also not defined in more detail) to bear against the support contour, e.g., collar surface 14, of the outer anchor.

[0052] 1 and 2, it can be seen that the stopper clip 15 temporarily prevents the inner anchor 13 from being fully inserted into the base plate 51. This means that the head 14 of the inner anchor remains on the base plate 51.

[0053] Furthermore, the medial anchor 13 has a blocking element in the form of a barb 13a.

[0054] In a further embodiment, the inner anchor 13 may (analogously) also have a block element corresponding to the outer anchor 23, which further has protruding barbs or claws 23a. Preferably, these claws 23a may (analogously) be formed circumferentially, offset by 90° in cross section, or alternatively as barbs and claws, in each case rotated by 90° relative to the axis of symmetry.

[0055] Figure 3 shows a detailed schematic view of the tip of the outer anchor inserter 20 shown in Figure 1. The outer anchor 23 is held inserted onto the outer anchor drive mandrel, which is positioned within the outer anchor release tube 22.

[0056] Furthermore, the outer anchor 23 has a blocking element in the form of a claw 23a.

[0057] Figure 4 shows a schematic diagram of stopper clip 15 with slot 18. Comparing Figure 4 with Figure 1 shows how stopper clip 15 cooperates with collar 61 of the release tube and collar of the base plate inserter to releasably restrain over- or under-insertion of the medial anchor.

[0058] All of the features discussed in connection with individual embodiments of the invention may be provided in various combinations in the subject matter according to the invention in order to simultaneously realize their advantageous effects.

[0059] The scope of protection of the present invention is defined by the claims and is not limited by the features described in the specification or shown in the drawings. [Explanation of symbols]

[0060] [List of references] 10...medial anchor inserter, 11...medial anchor drive mandrel, 12...medial anchor release tube, 13...medial anchor, 13a...barb, 14...medial anchor head, 15...stopper clip, 16...locking head, 17...medial anchor inserter handpiece, 18...slot, 20...outer anchor inserter, 21...outer anchor drive mandrel, 22...outer anchor release tube, 23...outer anchor, 23a...claw, 30...impact tool, 31...impact drive mandrel, 32...impact handpiece, 40...trocar, 41...trocar tube, 51...base plate, 52...base plate inserter, 52...base plate inserter tube, 53...barb / tab, 54...mark, 61...release tube collar, 62...base plate inserter collar.

Claims

1. A tool kit for minimally invasive implantation of a tenodesis implant comprising a medial anchor (13), a lateral anchor (23) and a base plate (51) in the field of arthroscopic medicine, comprising: The tool kit comprises a medial anchor inserter (10), The inner anchor inserter (10) comprises an inner anchor drive mandrel (11) and an inner anchor release tube (12); The inner anchor release tube (12) is designed to receive the inner anchor drive mandrel (11); the inner anchor drive mandrel (11) is designed to both receive the inner anchor (13) and introduce the inner anchor (13) into the bone by driving the inner anchor (13) into the bone; The inner anchor drive mandrel (11) has a locking head (16) for securing the inner anchor drive mandrel (11) to the inner anchor release tube (12), a base plate inserter (52), the base plate inserter (52) comprising a handpiece and a base plate inserter tube (52); the base plate inserter tube (52) is designed to receive the base plate (51) of a tenodesis plate and to introduce the base plate (51) at least partially into tissue or bone, and to receive the internal anchor inserter (10) within the handpiece and the base plate inserter tube (52); A releasable stopper clip (15) temporarily prevents full insertion of the medial anchor inserter (10) into the base plate inserter (52). A toolkit characterized by:

2. 2. The tool kit of claim 1, wherein a respective collar (61, 62) is formed on both the inner anchor release tube (12) and the base plate inserter (52).

3. 3. The tool kit according to claim 2, characterized in that the stopper clip (15) is designed as a position-fixing bridge and / or the collars (61, 62) are designed to prevent a possible axial offset between the inner anchor release tube (12) and the base plate inserter (52) by an interlocking mechanism.

4. 3. Tool kit according to claim 1 or 2, characterized in that the stopper clip (15) is designed to be releasable.

5. A tool kit as described in Claim 4, characterized in that the stopper clip (15) is designed to be removable.

6. A tool kit as described in Claim 5, characterized in that the stopper clip (15) is designed to be removable.

7. 3. The tool kit according to claim 1 or 2, characterized in that the stopper clip (15) is designed such that the first depth of insertion of the inner anchor (13) into the bone is adjustable.

8. A tool kit as described in Claim 7, characterized in that the stopper clip (15) is designed with a slot.

9. Further comprising an outer anchor inserter (20); The outer anchor inserter (20) comprises an outer anchor drive mandrel (21) and an outer anchor release tube (22); The outer anchor release tube (22) is designed to receive the outer anchor drive mandrel (21); The outer anchor drive mandrel (21) is designed to receive the outer anchor (23) and to guide the outer anchor (23) into the bone.

3. A toolkit according to claim 1 or 2.

10. 3. The tool kit according to claim 1 or 2, characterized in that the inner anchor release tube (12) is designed to bear against a support contour of the inner anchor (13) at the end face of the inner anchor release tube (12).

11. A tool kit as described in Claim 10, characterized in that the inner anchor release tube (12) is designed to support the collar surface of the inner anchor (13) at the end face of the inner anchor release tube (12).

12. 12. The tool kit of claim 11, wherein the end surface of the inner anchor release tube (12) and the support contour of the inner anchor (13) form a first pushing mechanism, which allows the inner anchor (13) to be released from the inner anchor drive mandrel (11).

13. 13. The tool kit of claim 12, wherein the end face of the inner anchor release tube (12) and the collar surface of the inner anchor (13) form the first pushing mechanism.

14. 10. The tool kit according to claim 9, characterized in that the outer anchor release tube (22) is designed to bear against a support contour of the outer anchor (23) at its end face.

15. A tool kit as described in Claim 14, characterized in that the outer anchor release tube (22) is designed to support the collar surface of the outer anchor (23) at the end face of the outer anchor release tube (22).

16. 16. The tool kit of claim 15, wherein the end surface of the outer anchor release tube (22) and the support contour of the outer anchor (23) form a second pushing mechanism, which allows the outer anchor (23) to be released from the outer anchor drive mandrel (21).

17. A tool kit as described in Claim 16, characterized in that the end face of the outer anchor release tube (22) and the collar surface of the outer anchor (23) form the second extrusion mechanism.

18. 3. The tool kit of claim 1 or 2, further comprising a follow-up driving tool (30), said follow-up driving tool (30) comprising a follow-up driving mandrel (31) and a follow-up driving handpiece (32).

19. The tool kit of claim 1 or 2, further comprising a trocar (40).

20. 10. The tool kit of claim 9, further comprising an inlay, the inlay designed to receive the tendon fixation plate, the medial anchor (13), and the lateral anchor (23), the inlay (50) having markings (54) for clearly distinguishing the medial anchor (13) from the lateral anchor (23).

21. A system comprising a tenodesis implant comprising an inner anchor (13), an outer anchor (23) and a base plate (51) and a tool kit for minimally invasive implantation of said tenodesis implant, 3. The toolkit is designed as claimed in claim 1 or 2. system.

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