Novel anti-fracture structure of absorbable anchor

Abstract

A novel anti-fracture structure of an absorbable anchor comprises an anchor body, the anchor body comprises a core rod and a thread, the thread is integrally arranged outside the core rod, and an assembly groove is inwards formed in the outer end of the thread; the assembling grooves are continuously arranged in the arrangement direction of the threads. A high-strength outer lining is movably arranged in the assembling groove, the arrangement form of the high-strength outer lining corresponds to that of the assembling groove, and the high-strength outer lining is connected with an inserting groove of the assembling groove. According to the absorbable anchor nail, a blank in the prior art is filled, the implementation strength of the absorbable anchor nail in the implanting process is improved through a simple structure, and the effect of preventing the anchor nail from being broken in the implanting process is achieved by assembling the high-strength outer lining. And after implantation is completed, the high-strength outer lining part can be screwed out, the absorption effect of the anchor is not affected, the implantation difficulty can be reduced, and the medical popularization value is high.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a novel anti-fracture structure of an absorbable anchor nail. Background Art

[0002] Anchors are common and frequently used equipment in orthopedic surgery. Generally, anchors can be divided into two types according to the material, one is non-absorbable material and the other is absorbable material. Among them, the non-absorbable anchor device has higher strength, but the disadvantage is that it is easy to rub and damage with the surrounding tissues, and there are problems such as implant rejection and foreign body reaction; the anchors made of absorbable materials have poor strength. Although they have the advantages of good compatibility with surrounding tissues and are not prone to adverse reactions such as rejection, they are limited by their own materials. During the implantation process, the outside of the anchor is squeezed by the bone wall and often breaks. There are disadvantages of high difficulty in operation and high risk of fracture. For the above situation, there is currently a lack of specific solutions. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a new absorbable anchor anti-fracture structure based on the existing anchor, which is grooved on the outside and equipped with hard structural parts to assist the implantation of the absorbable anchor.

[0004] The device comprises an anchor body, wherein the anchor body comprises a core rod and screw threads, and the screw threads are integrally arranged outside the core rod;

[0005] An assembly groove is provided inwardly at the outer end of the screw thread, that is, at the cutting edge of the screw thread; the assembly grooves are arranged continuously along the setting direction of the screw thread;

[0006] A high-strength outer liner is movably arranged in the assembly groove, and the high-strength outer liner is arranged in a form corresponding to the assembly groove and connected to the assembly groove slot. That is, the high-strength outer liner has an appearance similar to a spring and is in the form of a continuously arranged hollow multi-ring assembly.

[0007] The effect achieved in this way is: the high-strength outer liner is screwed into the assembly groove outside the screw thread. In this case, the high-strength outer liner directly serves as the external contact surface for the anchor to be screwed in, that is, the bone wall extrusion directly acts on the high-strength outer liner. After the anchor is screwed in, the high-strength outer liner is screwed out in the opposite direction, thereby realizing the implantation of the absorbable anchor and preventing breakage during the implantation process.

[0008] The beneficial effects of the utility model are as follows: the utility model fills a gap in the prior art, and improves the implementation strength of the absorbable anchor during implantation with a simple structure, that is, the anchor is prevented from breaking during implantation by assembling a high-strength outer liner. After implantation, the high-strength outer liner can be screwed out, which does not affect the anchor absorption effect, and can reduce the difficulty of implantation, which has great medical promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of a novel anti-fracture structure of an absorbable anchor described in the utility model;

[0010] Figure 2 This is a schematic diagram of the assembly structure of a novel anti-fracture structure of an absorbable anchor described in the utility model;

[0011] Figure 3 is a schematic structural diagram of Example 1;

[0012] Figure 4 is a schematic structural diagram of Example 2;

[0013] Figure 5 is a schematic structural diagram of Example 3;

[0014] Reference numerals:

[0015] 1-core rod 2-screw thread 3-high strength outer lining

[0016] 21-assembly groove 31-bone wall contact portion 32-groove body fitting portion

[0017] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] Reference Figure 1 , Figure 2 The utility model discloses a novel anti-fracture structure of an absorbable anchor, comprising an anchor body, wherein the anchor body comprises a core rod 1 and a screw thread 2, wherein the screw thread 2 is integrally arranged outside the core rod 1;

[0019] At the outer end of the screw thread 2, that is, at the cutting edge of the screw thread 2, a mounting groove 21 is provided inwardly; the mounting grooves 21 are arranged continuously along the setting direction of the screw thread 2;

[0020] A high-strength outer liner 3 is movably arranged in the assembly groove 21, and the arrangement form of the high-strength outer liner 3 corresponds to the assembly groove 21. That is, the appearance of the high-strength outer liner 3 is close to that of a spring, and is in the form of a continuously arranged hollow multi-ring assembly.

[0021] Furthermore, the assembly groove 21 is a through groove or a groove body with a closed end and a through groove at the rear.

[0022] Preferably, the through groove is a groove body with closed ends and a through rear portion, thereby facilitating the unscrewing and assembly of the high-strength outer lining 3.

[0023] Embodiment 1: Refer to the accompanying drawings of the specification Figure 3The core rod 1 is a hollow tube, and a plurality of slotted sections are arranged on the core rod 1.

[0024] The effect achieved by this is that the bone cell growth cooperates with the anchor structure to achieve staggered fixation safety.

[0025] Embodiment 2: Refer to the attached drawings of the specification Figure 4 The cross section of the high-strength outer liner 3 is circular, the assembly groove 21 is a semicircular groove body, and the outer diameter of the high-strength outer liner 3 is greater than the depth of the groove body.

[0026] Embodiment 3: Refer to the attached drawings of the specification Figure 5 The high-strength outer liner 3 includes a groove body embedding portion 32 and a bone wall contact portion 31, and the groove body embedding portion 32 and the bone wall contact portion 31 are integrally arranged;

[0027] The groove body engaging portion 32 is arranged corresponding to the groove body of the assembly groove 21, and the cross section of the bone wall contact portion 31 is in the form of a triangle, and its end is sharp;

[0028] The height of the high-strength outer liner 3 is greater than the depth of the assembly groove 21 .

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel anti-fracture structure of an absorbable anchor, comprising an anchor body, wherein the anchor body comprises a core rod and a screw thread, wherein the screw thread is integrally arranged outside the core rod, and wherein: An assembly groove is provided inwardly at the outer end of the screw thread; the assembly grooves are arranged continuously along the setting direction of the screw thread; A high-strength outer lining is movably arranged in the assembly groove, and the high-strength outer lining is arranged in a form corresponding to the assembly groove and connected to the assembly groove slot.

2. The novel anti-fracture structure of absorbable anchor according to claim 1, characterized in that: The assembly groove is a through groove or a groove body with a closed end and a through groove at the rear.

3. The novel anti-fracture structure of absorbable anchor according to claim 1, characterized in that: The core rod is in a hollow tubular shape and is provided with a plurality of slotted sections.

4. The novel anti-fracture structure of absorbable anchor according to claim 1, characterized in that: The cross section of the high-strength outer liner is circular, the assembly groove is a semicircular groove body, and the outer diameter of the high-strength outer liner is greater than the depth of the groove body.

5. The novel anti-fracture structure of absorbable anchor according to claim 1, characterized in that: The high-strength outer lining includes a groove body embedding portion and a bone wall contact portion, and the groove body embedding portion and the bone wall contact portion are integrally arranged; The groove body engaging portion is arranged corresponding to the assembly groove body, and the cross section of the bone wall contact portion is in a triangular form, and its end is sharp; The height of the high-strength outer lining is greater than the depth of the assembly groove.

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