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US-12622692-B2 - Tendon fixation plate

US12622692B2US 12622692 B2US12622692 B2US 12622692B2US-12622692-B2

Abstract

A tendon implant for planar connection of tissue to bone includes a clamping surface that includes an outer edge, an inner edge, and at least one connecting web. At least one of the outer edge is connected at least partially to the inner edge at least partially by the at least one connecting web or the clamping surface includes at least one opening arranged within the clamping surface. The at least one opening is connected by the at least one connecting web. The clamping surface has a circular or oval or polygonal circumference, and includes a rotationally symmetrical and/or mirror-symmetrical contour. The clamping surface has a further opening configured to receive a securing means. The securing means includes a pin, a head and a neck. The clamping surface includes at least one projection, and the at least one projection includes an articulated joint.

Inventors

  • Lukas Flöß
  • Stefan Welte

Assignees

  • INOVEDIS GMBH

Dates

Publication Date
20260512
Application Date
20240604
Priority Date
20200514

Claims (20)

  1. 1 . A tendon implant for planar connection of tissue to bone, wherein the tendon implant comprises a clamping surface, wherein the clamping surface comprises an outer edge, an inner edge, at least one connecting web, and a projection, wherein the outer edge is connected at least partially to the inner edge by the at least one connecting web, wherein the clamping surface comprises at least one opening formed therein, wherein the at least one opening is connected by the at least one connecting web to a partial area of the outer edge of the clamping surface, wherein the clamping surface has a further opening formed therein, wherein the further opening in the clamping surface is configured to receive a first securing means, the securing means comprises a pin, a head and a neck, wherein the projection extends from the outer edge of the clamping surface, wherein the projection comprises a first aperture formed therein, a second aperture formed therein, and an articulated joint, wherein the articulated joint comprises a first portion and a second portion, and wherein the first portion is separated from the second portion by the first aperture formed within the projection.
  2. 2 . The tendon implant as claimed in claim 1 , wherein the articulated joint extends from the outer edge of the clamping surface, and wherein the first portion of the articulated joint extends substantially parallel to the second portion of the articulated joint.
  3. 3 . The tendon implant as claimed in claim 2 , wherein the first aperture formed within the projection extends from the outer edge of the clamping surface, and wherein the first aperture extends substantially parallel to the articulated joint.
  4. 4 . The tendon implant as claimed in claim 1 , wherein the second aperture formed within the projection is configured to receive a second securing means, the second securing means comprises a pin, a head, and a neck.
  5. 5 . The tendon implant as claimed in claim 1 , wherein the first portion of the articulated joint comprises a first radius that extends from the clamping surface, and wherein the second portion of the articulated joint comprises a second radius that extends from the clamping surface, the first radius extends substantially parallel to the second radius.
  6. 6 . The tendon implant as claimed in claim 5 , wherein the first radius and the second radius are centered between the first securing means of the clamping surface and a second securing means received by the projection.
  7. 7 . The tendon implant as claimed in claim 1 , wherein the further opening in the clamping surface is centered.
  8. 8 . The tendon implant as claimed in claim 1 , wherein the further opening in the clamping surface has a hollow configured to receive the head with a form fit.
  9. 9 . The tendon implant as claimed in claim 1 , wherein the at least one opening of the clamping surface has a different shape from the further opening of the clamping surface.
  10. 10 . The tendon implant as claimed in claim 1 , wherein the further opening in the clamping surface is eccentric.
  11. 11 . The tendon implant as claimed in claim 1 , wherein the clamping surface comprises at least two opposite spikes, wherein the at least two opposite spikes are formed on an underside of the clamping surface.
  12. 12 . The tendon implant as claimed in claim 1 , wherein the pin comprises a thread or barbs.
  13. 13 . The tendon implant as claimed in claim 1 , wherein the clamping surface comprises a plurality of fixing means, wherein the plurality of fixing means are formed on an underside of the clamping surface perpendicularly to the clamping surface.
  14. 14 . The tendon implant as claimed in claim 13 , wherein the plurality of fixing means are integrally formed on the clamping surface in the same material, the plurality of fixing means are formed with a length of more than 2 millimeters, the plurality of fixing means are cone-shaped, or the plurality of fixing means are surface-tight.
  15. 15 . The tendon implant as claimed in claim 13 , wherein a length of each fixing means, of the plurality of fixing means, increases towards the outer edge of the clamping surface.
  16. 16 . The tendon implant as claimed in claim 1 , wherein at least two securing means are arranged approximately parallel to one another, wherein the clamping surface forms a plane, and wherein at least one securing means is arranged approximately perpendicular to the plane.
  17. 17 . The tendon implant as claimed in claim 1 , wherein the clamping surface comprises one of: a tool engagement surface free from fixing means, or a tool engagement opening.
  18. 18 . The tendon implant as claimed in claim 1 , wherein the clamping surface comprises one of: a circular circumference, an oval circumference, a polygonal circumference, or a partially rounded circumference, and wherein the clamping surface comprises one of: a rotationally symmetrical contour or a mirror symmetrical contour.
  19. 19 . The tendon implant as claimed in claim 1 , wherein the tendon implant is non-rigid.
  20. 20 . The tendon implant as claimed in claim 1 , wherein the tendon implant consists of a plastic or a plastic compound.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS This application is a continuation-in-part and claims priority to U.S. application Ser. No. 17/998,707, filed Nov. 14, 2022, which is a Section 371 National Stage Application of International Application No. PCT/EP2021/062411, filed May 11, 2021, and published as WO 2021/228807 A1 on Nov. 18, 2021, and claims priority to German Application No. 102020113146.1, filed May 14, 2020; the contents of each of these applications are hereby incorporated by reference in their entirety. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a perspective illustration of an implant in one example with a screw as securing means. FIG. 2 shows a top view of an implant in one example with a visible head of a screw. FIG. 3 shows a perspective illustration of an implant according to one embodiment of the invention with projection and two securing means. DETAILED DESCRIPTION The present disclosure relates to a tendon implant for planar connection of tissue to bone. A medical intervention for fixing and reconstructing torn-off tissue, for example tendinous tissue, is a customary procedure and can have different causes. In this regard, it is known from the prior art that, in order to reconstruct, for example, a torn-off tendon, the torn-off tendinous tissue is fixed by means of an implant for incorporation on a bone to said bone. It has to be ensured here, among other things, that there is a sufficient flow of blood through the tendinous tissue to prevent necrotic processes. An implant of this type is known, for example, from EP 3 184 078 B1. The torn-off tendinous tissue is fixed permanently here to the bone by means of a broken-through clamping surface and at least three securing means connected thereto. The implant is held for fixing purposes by means of a special tool and the securing means are driven into the bone, for example by means of an impact tool. The tissue is thereby connected to and pressed onto the bone in planar fashion. A disadvantage of this is in particular that, for secure holding, the implant has to be driven with its securing means into the bone with extremely great precision. Position, angle and orientation, in which the implant is secured, have to be carefully selected, which means that such a surgical intervention takes more time and therefore entails increased costs. Furthermore, incorrect driving of the implant into the bone may have an effect on the stability of the implant and cause the tissue to be detached from the bone. As a result, another intervention is necessary, which places additional stress on the patient. Moreover, a minimally invasive introduction of the implant by the surgical procedure is frequently impossible because of the considerable size of the implant. Furthermore, WO 2019/157853 A1 discloses a fixation clamp for knee joint surgery for fixing the collateral ligament of the knee joint or for preventing injury to the patella tendon at the Tuberculum tibialis. Furthermore, EP 0 358 372 A1 discloses a channel ligament clamp, comprising a section of a channel which is produced from a material which is suitable for human implantation, having upright, spaced-apart, parallel spikes. Furthermore, US 2007/118128 A1 discloses various exemplary methods and devices for fixing an implant to native tissue, for example bone. Furthermore, US 2013/096678 A1 discloses transplant fixing arrangements which comprise a base element, a compression element and a fastening element. Furthermore, US 2016/242771 A1 discloses a bone fixation device or bone clamp, comprising a crown portion, an engagement portion and an outer edge which is generally defined between the crown portion and the engagement portion. An object of one example of the invention is therefore to make available a possibility for securing tissue to bone in the context of a surgical intervention which, while minimizing necrotic processes, can be performed stably and more easily with less expenditure in terms of time and costs. According to one example of the invention, this object is achieved in conjunction with the preamble of patent claim 1 by the characterizing features of patent claim 1. The dependent claims specify advantageous and expedient developments. To achieve this object, an implant for planar connection of tissue to bone is proposed, wherein the clamping surface comprises an outer edge and an inner edge, wherein the outer edge is connected at least partially to the inner edge at least partially by means of at least one connecting web, and/or in that the clamping surface comprises an outer edge and at least one opening arranged within the clamping surface, wherein the opening is connected by means of at least one connecting web at least to a partial area of the outer edge of the clamping surface. According to one example, provision is made here that the clamping surface has a circular or oval or polygonal circumference, in particular a rotationally symmetrical and/or mirror-symmetrical contour, w