CN215821072U

CN215821072U - Calcaneus sustentaculum talus screw fixing and positioning device

Info

Publication number: CN215821072U
Application number: CN202120093229.XU
Authority: CN
Inventors: 刘建全; 李文翠; 赵喆; 邓志钦; 陈小强; 李永胜; 王光辉; 尹建文; 程翔宇; 李嘉贝
Original assignee: Shenzhen Second Peoples Hospital
Current assignee: Shenzhen Second Peoples Hospital
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2022-02-15
Anticipated expiration: 2031-01-14

Abstract

The utility model provides a calcaneus sustentaculum talus screw fixing positioner, which is used for calcaneus sustentaculum talus screw fixing operation and comprises a guide handle, a positioning handle, a fixing assembly and a sleeve, wherein the guide handle is in cross connection with the middle part of the positioning handle, the fixing assembly is arranged at the end part of the positioning handle, and the sleeve is arranged at the end part of the guide handle, corresponds to the fixing assembly and is positioned on the same axis; its overall structure is simple, and location effect is good, can guide in the operation accurate drive into carry the apophysis set screw, and it is long to reduce the operation, improves the fixed effect of operation.

Description

Calcaneus sustentaculum talus screw fixing and positioning device

Technical Field

The utility model relates to the field of medical instruments, in particular to a calcaneus sustentaculum talus screw fixing positioner.

Background

The calcaneus sustentaculum is a special structure of the calcaneus, namely a bony bulge of the front part and the body part of the calcaneus towards the inside and the upper part, the bone is compact, tendons and ligaments around the sustentaculum are many, and simultaneously, a strong joint capsule is attached, so that the sustentaculum rarely displaces in the calcaneus fracture. The talus process therefore becomes an important fulcrum for screw fixation in order to effectively fix the reduced posterior facet bone pieces. Utilize the special stability of year talus process in calcaneus fracture, the postoperative with the calcaneus back articular surface fracture piece that sinks restore to the throne back, need follow the screw for the calcaneus lateral wall through cortex or through the fixed fracture piece of coaptation board screw hole, wherein through the screw that bone piece outside-in is fixed to year talus process under the back articular surface, can obtain best screw and control power, reach powerful fixed effect, have important meaning to improving the therapeutic effect of calcaneus fracture internal fixation. The medial sustentaculum talipes can not be exposed in the conventional calcaneus lateral approach, the sustentaculum talipes screw is inwards placed from the calcaneus lateral wall, drilling needs to be carried out by depending on the familiarity of an operator on an anatomical structure and the experience of an operation, an operation visual field blind area exists, deviation easily occurs in the screw position, and iatrogenic complications such as injury of an important structure on the calcaneus medial side and entry of the screw into a joint gap can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sustentaculum-carrying screw fixing positioner which can solve the problems of inaccurate positioning, poor fixing effect and the like caused by difficult positioning of the sustentaculum-carrying screw.

In order to achieve the above purpose, the solution of the utility model is as follows:

the utility model provides a calcaneum year talus process screw fixation locator, its is used for calcaneum year talus process operation, including guide handle, location handle, fixed subassembly and sleeve, guide handle with location handle middle part cross connection, fixed subassembly is located the tip of location handle, the sleeve is located guide handle's tip, and with fixed subassembly is corresponding and be in on the same axis.

Further, the fixing assembly comprises a tip corresponding to the center of the sleeve.

Further, the fixing assembly further comprises a fixing piece, and the tip is fixed on the fixing piece.

Further, the fixing piece is a spherical or elliptical sphere.

After adopting above-mentioned technical scheme, overall structure is simple and fixed and location are effectual, prevent that the intramedullary nail from taking place the deviation, reduce the production of complication, greatly shorten the operation duration through adopting this kind of structure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a calcaneus sustentaculum talus screw fixing positioner according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in figure 1, a calcaneus year talus process screw fixation locator, it is used for calcaneus year talus process screw fixation operation, including guide handle 1, location handle 2, fixed subassembly 3 and sleeve 4, this guide handle 1 and 2 middle parts of location handle are alternately continuous, the tip of location handle 2 is located to this fixed subassembly 3, the tip of guide handle 1 is located to this sleeve 4, this fixed subassembly 3 is corresponding with sleeve 4, when being located same end and this fixed locator and opening, fixed subassembly 3 is in same axis with sleeve 4.

The inner diameter of the sleeve 4 is designed to be 2.0-2.5mm, a hollow nail guide pin or a drill bit can penetrate through the sleeve 4 to drill into the calcaneus, the sleeve 4 has a guiding effect, the sleeve 4 corresponds to the center of the fixing component 3, specifically, the circle center of the sleeve 4 corresponds to the center of the fixing component 3, therefore, when the hollow nail guide pin or the drill bit is placed into the calcaneus, the hollow nail guide pin or the drill bit corresponds to the center of the fixing component 3, and the tip of the fixing component 3 is fixed on a space-carrying projection on the inner side of the calcaneus.

Further, the fixing component 3 includes a tip 31 and a fixing member 32, the tip 31 is disposed on the fixing member 32, and both of them can be integrally formed or assembled, in this embodiment, the tip 31 and the fixing member 32 are integrally formed, the whole structure is simple, the fixing member 32 can be a spherical ball or an elliptical ball, in this embodiment, the elliptical ball is adopted, the tip 31 is disposed on the fixing member 32, and mainly facilitates the percutaneous fixing of the locator on the surface of the sustentaculum, the design of the tip prevents the slipping of the locator in operation, and simultaneously reduces the damage to the inner tissue structure, and the fixing effect is better. Specifically, the pointed end 31 corresponds to the center of the sleeve 4, so that the driven hollow nail guide pin or the drill bit can correspond to the pointed end of the pointed end 31, the positioning accuracy and success rate of the pointed end 31 are increased, the pointed end 31 is convenient to integrally place, and the positioning accuracy of the pointed end 31 is increased.

The use process comprises the following steps: the calcaneus fracture block of a patient is reset and temporarily fixed in advance, when a talus-carrying screw is planned to be driven in, the position of the talus-carrying is positioned at the inner side of the calcaneus through skin, the tip 31 and the fixing piece 32 of the fixing component 3 are placed on the surface of the talus-carrying talus bone, the placing is simpler through the sharpness of the tip 31, and the fixing effect is better through the shape of the oval fixing piece 32; the hollow nail guide pin or the drill bit of the other end drills into the calcaneus of the patient through the outer side wall of the sleeve 4 of the fixing positioner and is driven into the space carrying talus process, and the circle center of the sleeve 4 corresponds to the tip end 31, so that the guide pin or the drill bit corresponds to the tip end 31, the space carrying talus process is driven into the space carrying talus process exactly on the inner side of the calcaneus, and the deviation is not easy to occur. Then the locator is removed, and the hollow screw is screwed in through the guide pin drilling hole or the lag screw is directly screwed in to fix the calcaneus fracture block, thereby obtaining the best fixation effect of the sustentaculum talinum screw.

The present invention is not limited to the above preferred embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a calcaneum year talus process screw fixation locator, its is used for calcaneum year talus process screw fixation operation, its characterized in that, including guiding handle (1), location handle (2), fixed subassembly (3) and sleeve (4), guiding handle (1) with location handle (2) middle part cross connection, fixed subassembly (3) are located the tip of location handle (2), sleeve (4) are located the tip of guiding handle (1), and with fixed subassembly (3) are corresponding and are in on the same axis.

2. The calcaneus sustentaculum screw fixation positioner as recited in claim 1, wherein the fixation assembly (3) comprises a tip (31), the tip (31) corresponding to a center of the sleeve (4).

3. The calcaneus sustentaculum screw fixation positioner as recited in claim 2, wherein the fixation assembly (3) further comprises a fixation member (32), the tip (31) being fixed to the fixation member (32).

4. The calcaneus sustentaculum talus screw fixation positioner as recited in claim 3, wherein the fixation member (32) is a spherical or elliptical sphere.