CN202637079U

CN202637079U - Needle fixing clamp

Info

Publication number: CN202637079U
Application number: CN201220220591XU
Authority: CN
Inventors: 王浩; 王守国
Original assignee: Changzhou Orthmed Medical Instrument Co Ltd
Current assignee: Changzhou Orthmed Medical Instrument Co Ltd
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2013-01-02
Anticipated expiration: 2022-05-15

Abstract

The utility model relates to a needle fixing clamp. The needle fixing clamp comprises a needle clamp body. The needle clamp body is a sheet-shaped object, and a concave groove is arranged at the bottom of the needle clamp body. A positioning hole and three to eight needle holes are arranged in a front large plane and a back large plane in communicated mode, and the positioning hole and the needle holes all penetrate through the concave groove. A needle clamp block is arranged in the concave groove of the needle clamp body, moving holes and locking holes corresponding to the holes in the front large plane and the back large plane are arranged on the needle clamp block, the needle clamp block and the needle clamp body are combined into a whole through an eccentric pin and a compression nut, the eccentric pin penetrates through the positioning hole in the needle clamp body, and the compression nut matches with the eccentric pin. A universal groove is arranged on the top of the needle clamp body, and a check ring is arranged at the upper end of the universal groove. According to the needle fixing clamp, a diameter changing effect of the eccentric pin is used to achieve the effect that a bone needle is clamped tightly, the needle fixing clamp is simple in structure, convenient to operate and light in overall weight, and recovery of a fracture is facilitated.

Description

The pin fixation clamp

Technical field

This utility model relates to the parts of bone external fixator, particularly a kind of pin fixation clamp.

Background technology

Bone fixedly refers to outward wear with the distal end percutaneous at the nearly heart of fracture puts draw point (nail), and the pin end that will expose outside skin with connecting rod and draw point (nail) fixation clamp again is connected to each other, thereby fixes a kind of Therapeutic Method of fracturing.This special device of fixing fracture is exactly the bone external fixator.Pin fixation clamp on the bone external fixator plays the effect that is connected and fixed.At present, the structure of pin fixation clamp is relatively complicated, and overall weight is heavier, operates also easyly not, and the rehabilitation of fracture is had certain influence.

The utility model content

The purpose of this utility model provides a kind of light weight, efficiently pin fixation clamp simple in structure, easy to assembly.

The technical scheme that realizes this utility model purpose is: the utlity model has the pin clamp; Described pin clamp is that tablet and bottom have groove; Large plane, the front and back of described pin clamp is provided with a locating hole that communicates and three to eight pin holes that communicate, and locating hole and pin hole all pass groove; Be provided with a pin fixture block in the groove of described pin clamp, the pin fixture block is provided with motion hole and the locking hole corresponding with locating hole and pin hole on the pin clamp, and pin fixture block and pin clamp form a whole by the supporting clamp nut of a cam pin that passes locating hole on the pin clamp and and cam pin; The top of described pin clamp has universal groove, and the upper end of universal groove is provided with back-up ring.

The axial cross section of above-mentioned cam pin is concave shape, and the width at depression position is greater than the width of pin clamp upper groove.

The outer of above-mentioned cam pin is provided with an identification hole, and the axis of identification hole is on the axial symmetrical plane of cam pin; The front large plane of described pin clamp is provided with a blind hole, blind hole be arranged on cam pin directly over.

Large plane, the front and back of above-mentioned pin clamp is provided with four and is the pin holes that isosceles trapezoid distributes, above the axis of two pin holes parallel with the axis of locating hole, below the axis of two pin holes and the axis of locating hole be 4.5 ° of angles.

The utlity model has positive effect: (1) this utility model utilizes the turning effort of cam pin in the pin fixture block, so that the pin fixture block is subjected to displacement, thereby realizes clamping to spicule, uses very convenient quick; (2) this utility model is simple in structure small and exquisite, has greatly saved material, so that product quality is lighter; (3) this utility model is identified locking and the relaxation state of product, safety very directly perceived by the blind hole on the pin clamp and the para-position between the identification hole on the cam pin.

Description of drawings

Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail this utility model, wherein according to specific embodiment also by reference to the accompanying drawings

Fig. 1 is front view of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the front view of this utility model pin clamp;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the front view of this utility model pin fixture block.

The specific embodiment

See Fig. 1 to Fig. 5, the utlity model has the pin clamp, described pin clamp 1 has groove 14 for tablet and bottom.Large plane, the front and back of described pin clamp 1 is provided with a locating hole that communicates 12 and four pin holes 11 that are the isosceles trapezoid distribution, above the axis of two pin holes 11 parallel with the axis of locating hole 12, below the axis of two pin holes 11 and the axis of locating hole 12 be 4.5 ° of angles, locating hole 12 and pin hole 11 all pass groove 14.Be provided with a pin fixture block 2 in the groove 14 of described pin clamp 1, pin fixture block 2 is provided with motion hole 22 and the locking hole 21 corresponding with locating hole 12 and pin hole 11 on the pin clamp 1, and pin fixture block 2 and pin clamp 1 form a whole by a cam pin 3 that passes locating hole 12 on the pin clamp 1 and one and cam pin 3 supporting clamp nuts 5.The axial cross section of described cam pin 3 is concave shape, and the width at depression position is greater than the width of pin clamp 1 upper groove 14.By rotating eccentricity pin 3, so that pin fixture block 2 slides up and down, thereby so that the locking hole 21 on the pin fixture block 2 is subjected to displacement with pin hole 11 on the pin clamp 1, play the effect of locking spicule in the groove 14 of pin clamp 1.The outer of described cam pin 3 is provided with an identification hole 31, and the axis of identification hole 31 is on the axial symmetrical plane of cam pin 3.The front large plane of described pin clamp 1 is provided with a blind hole 13, blind hole 13 be arranged on cam pin 3 directly over.By the para-position of identification hole 31 and blind hole 13, that judges product loosens and locking state intuitive and convenient.The top of described pin clamp 1 has universal groove 15, and the upper end of universal groove 15 is provided with back-up ring 4, can be used in conjunction with universal connecting screw rod device.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to this utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. a pin fixation clamp has pin clamp (1); It is characterized in that: described pin clamp (1) has groove (14) for tablet and bottom; The large plane, front and back of described pin clamp (1) is provided with a locating hole that communicates (12) and three to eight pin holes that communicate (11), and locating hole (12) and pin hole (11) all pass groove (14); Be provided with a pin fixture block (2) in the groove (14) of described pin clamp (1), pin fixture block (2) is provided with motion hole (22) and the locking hole (21) corresponding with the upper locating hole (12) of pin clamp (1) and pin hole (11), and pin fixture block (2) and pin clamp (1) form a whole by the supporting clamp nut (5) of a cam pin (3) that passes locating hole (12) on the pin clamp (21) and and cam pin (3); The top of described pin clamp (1) has universal groove (15), and the upper end of universal groove (15) is provided with back-up ring (4).

2. pin fixation clamp according to claim 1, it is characterized in that: the axial cross section of described cam pin (3) is concave shape, and the width at depression position is greater than the width of pin clamp (1) upper groove (14).

3. pin fixation clamp according to claim 2, it is characterized in that: the outer of described cam pin (3) is provided with an identification hole (31), and the axis of identification hole (31) is on the axial symmetrical plane of cam pin (3); The front large plane of described pin clamp (1) is provided with a blind hole (13), blind hole (13) be arranged on cam pin (3) directly over.

4. pin fixation clamp according to claim 3, it is characterized in that: the large plane, front and back of described pin clamp (1) is provided with four and is the pin hole (11) that isosceles trapezoid distributes, above the axis of two pin holes (11) parallel with the axis of locating hole (12), below the axis of two pin holes (11) and the axis of locating hole (12) be 4.5 ° of angles.