CN202198656U

CN202198656U - Locking type kneecap fracture reset fixing device

Info

Publication number: CN202198656U
Application number: CN2011202556146U
Authority: CN
Inventors: 熊鹰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-19
Filing date: 2011-07-19
Publication date: 2012-04-25
Anticipated expiration: 2021-07-19

Abstract

The utility model discloses a locking type kneecap fracture reset fixing device, comprising a fixing ring (1) and a grabbing hook (3). The kneecap fracture reset fixing device is characterized in that the center of the fixing ring (1) is in the shape of a spherical arc; radial pawl arm grooves (2) are evenly disposed along the circumference; the pawl arm groove (2) is in a sliding cooperation with a hook arm (4). The locking type kneecap fracture reset fixing device is advantageous in that as the fixing ring is in the shape of a spherical arc, and the pawl arm grooves evenly disposed on the ring body are in sliding cooperation with the hook arm till a required position is arrived, and the locking is realized by using a special-purpose tool; a strong gathering force is formed after fixing, facilitating the reset and fixing of kneecap; rehabilitation time can be effectively shortened, and rehabilitation effect after operation can be improved.

Description

Gather locking-type Patella fracture reseting fixture

Technical field

This utility model belongs to fracture fixation utensil technical field, be specifically related to a kind of be exclusively used in that Patella fracture resets gather the locking-type fixture.

Background technology

During reality was produced, lived, often because of the unexpected situation that Patella fracture takes place, the medical worker had researched and developed multiple patella fixture according to clinical practice, and wherein internal fixation patella reduction fixture device effect is better, is widely used clinically.Mostly Patella fracture is horizontal type or comminuted fracture by due to the direct or indirect violence, and the traction owing to quadriceps femoris during fracture separates displacement, and its fracture is intra-articular fracture, and anatomical reduction and reliable internal fixation are particularly important to joint function rehabilitation.But through long-term practice check, the deficiency of patella reseting fixture various degrees.These are not enough directly to influence the fixed fixed effect that resets that resets.And even influence patient's functional rehabilitation and rehabilitation.In order to overcome the deficiency of prior art, the design people to existing technical deficiency, passes through secular clinical practice, concentrates on studies, and has developed a kind of patella reseting fixture, evidence, and effect is good.

The utility model content

It is a kind of simple in structure that the purpose of this utility model is to provide, and is prone to processing, manipulates easyly, and working stability is reliable, and that gathers stress concentration gathers locking-type Patella fracture reseting fixture.

The purpose of this utility model is achieved in that and comprises that retainer ring and claw hook form, and described retainer ring center is the sphere arc and the radially pawl arm groove that is uniformly distributed along the circumference, and described pawl arm groove and hook arm are slidingly matched.

Because this utility model fixedly ring body and pawl arm groove is that one is the sphere arc; So that it is consistent with patella surface anatomy radian; Pawl arm groove that is uniformly distributed with on the ring body and hook arm are slidingly matched and after reaching desired location, use specific purpose tool to lock, and make fixing back form and gather stress by force, and it is fixing to help resetting of patella; Can effectively shorten rehabilitation duration, and improve the postoperative rehabilitation effect.

Description of drawings

Fig. 1 is this utility model retainer ring interarea topology view;

Fig. 2 is the structure view of Fig. 1;

Fig. 3 is the lateral plan of Fig. 1;

Fig. 4 is the lateral plan of Fig. 2;

Fig. 5 is the view of claw hook in pawl arm groove;

Fig. 6 is a hook arm configuration sketch map.

Among the figure: 1-retainer ring, 2-pawl arm groove, 3-claw hook, 4-hook arm, 5-coupler body.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is further described, but never in any form this utility model is limited,, all fall into the protection domain of this utility model based on any conversion that this utility model training centre is done.

Like Fig. 1-shown in Figure 4, this utility model comprises that retainer ring 1 and claw hook 3 form, and described retainer ring 1 center is the sphere arc and the radially pawl arm groove 2 that is uniformly distributed along the circumference, and described pawl arm groove 2 is slidingly matched with hook arm 4.

Described pawl arm groove 2 is a semicircle hole shape structure, and pawl arm groove 2 semicircle orifice axis are consistent with retainer ring sphere radian.

Pawl arm groove quantity on the said retainer ring 1 is 8-12.

The hook arm radian of said claw hook 3 is consistent with the radian of pawl arm groove 2, and in pawl arm groove, cooperates slip

Fig. 5 shows the state of claw hook in pawl arm groove.

Fig. 6 shows the structure of hook arm 4, and the coupler body 5 of hook arm 4 front ends is curved down interior hook arc.

This utility model should be with corrosion resistance material such as titanium alloys.

The working method of this utility model: cut skin; Patella resets down in direct-view, places patella surperficial retainer ring, the subsides that conform to of its inboard patella surface; Encircle last 2～4 pawl arm grooves and can insert claw hook earlier; The hook end is caught lower edge on the patella, and clamps the corresponding up and down hook end of claw hook with pressurized clamp and entad pressurize, and the pressurization of bone piece is drawn close; The alignment situation of patella posterior articular facet is noted in pressurization when resetting; With specific purpose tool its claw hook arm is locked on the pawl arm groove after resetting.Aforesaid way is fixed each claw hook can accomplish the fixation procedure that resets.

The utlity model has simple in structurely, be prone to processing, it is strong to gather stress, and characteristics easy and simple to handle help patella and reset fixingly, can effectively shorten patient's rehabilitation duration, improve the postoperative rehabilitation effect.

Claims

1. one kind is gathered locking-type Patella fracture reseting fixture, comprises retainer ring (1) and claw hook (3) composition, and it is characterized in that: described retainer ring (1) center is the sphere arc and the radially pawl arm groove (2) that is uniformly distributed along the circumference, and described pawl arm groove (2) is slidingly matched with hook arm (4).

2. the locking-type Patella fracture reseting fixture that gathers according to claim 1 is characterized in that: described pawl arm groove (2) is a semicircle hole shape structure, and pawl arm groove (2) semicircle orifice axis is consistent with retainer ring sphere arc.

3. the locking-type Patella fracture reseting fixture that gathers according to claim 1 is characterized in that: pawl arm groove (2) quantity on the said retainer ring (1) is 8-12.

4. the locking-type Patella fracture reseting fixture that gathers according to claim 1 is characterized in that: the coupler body (5) of said hook arm (4) front end is curved down interior hook arc.