CN200970288Y

CN200970288Y - Bullet anchor type fracture traction fixer

Info

Publication number: CN200970288Y
Application number: CN 200620047961
Authority: CN
Inventors: 张军威
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-20
Filing date: 2006-11-20
Publication date: 2007-11-07
Anticipated expiration: 2016-11-20

Abstract

The utility model relates to a bullet anchor type fracture traction and fixing device, which comprises a cylindrical base body that is provided with conical ends, internal and external screw threads and a work window and is provided with a push block and a slide block engaged in the cavity, a shell composed of middle straight levers provided with central opposite holes, a push block provided with external screw threads, a limiting steel wire with L-shaped bends at two ends, a main component composed of a slide bock that is inlaid on the push block and is provided with flat limiting cards, and an auxiliary component composed of a guiding steel needle used for limiting setup and a traction block used for performing works, wherein a limiting partition board is provided at the joint between the cylindrical base body and the cavity in the front end. In practical use, set up the guide steel needle, and the steel needle can guide rotation of the cylindrical base body to push forward the shell onto bones; when the push block is driven, the limiting card projects outwards and is anchored on the bones. The utility model has the advantages of: convenient setup, excellent traction effects, small area of damage to surrounding tissues and effective prevention of fracture complication, thus the utility model can help ease the pain and post-operative recovery for patients.

Description

A kind of nose cone anchor type traction fixing device for fracture

Technical field

This utility model relates to a kind of fractures auxiliary implement, particularly a kind of nose cone anchor type traction fixing device for fracture.

Background technology

At present in the treatment of fractures process of hospital surgery, no matter be to draw on the condyle of femur, still tibia knot movable joint traction, all adopt traditional osseous pin traction technique, select for use the suitable osseous pin of specification vertically to penetrate femur in operation, skeletons such as tibia, subcutaneous tissue and skin, making traction property in the end application of force then stretches, be easy to make the local subcutaneous tissue of osseous pin position point, blood vessel and nerve etc. are dampened and are infected, bring slight illness to the patient, if careless manipulation or mishandling slightly, also may cause splitting of iatrogenic sclerotin matter or fracture, make pin hole surrounding soft tissue ulcer, sepage or do not cure for a long time brings great health misery to the patient, stress and financial burden.In addition, because common vertically disposed traction effect is more quite a lot of relatively when using osseous pin, but because the skeleton of partes corporis humani position has nothing in common with each other, there is difference between often desirable setting and the actual pull strength direction, so there are problems such as operation easier is big, applicable surface is wide, use inconvenience.

Summary of the invention

The purpose of this utility model be to provide a kind of and be provided with conveniently, patient's wound face is little, widely applicable, the pull strength direction is controlled easily, to the influence of surrounding soft tissue less and avoid the novel nose cone anchor type traction fixing device for fracture that causes splitting of iatrogenic sclerotin matter or fracture, help guaranteeing patient safety.

This utility model is achieved in that nose cone anchor type traction fixing device for fracture is made of main part and auxiliary member, main part includes housing, pushing block, sliding shoe, spacing card and spacing steel wire, auxiliary member includes draw point and guiding piece, wherein: housing is by the coniform leading section that is integrative-structure, cylindrical substrate and middle straight-bar constitute, the inner surface of cylindrical substrate is provided with female thread, outer surface is provided with external screw thread, intracavity junction at cylindrical substrate and coniform leading section is provided with spacing dividing plate, be symmetrically arranged with left and right sides working window on the cylindrical shell near the cylindrical substrate of spacing dividing plate, middle straight-bar main body frenulum center is to the square bar of perforation; The diameter of pushing block conforms to the intracavity diameter of cylindrical substrate, middle be equipped with square pilot hole to wearing, outer surface is provided with cylindrical substrate chamber wall on the external screw thread that is complementary of female thread, the lower surface is provided with the spacing shrinkage pool that holds, be provided with broad U-shaped assembling draw-in groove by the upper part in the middle of near, nearly upper end face part is provided with narrower U-shaped assembling draw-in groove; The sliding shoe centre is equipped with square pilot hole to wearing, its nearly lower bottom part to nearly intermediary position is provided with the fitting recess that links to each other with the square pilot hole in centre, in the middle of near by on time position except that being provided with described fitting recess, both sides also are provided with assembling groove, following concavity fitting recess in the middle of the top is symmetrically arranged with closely assembles at the both sides cell wall of concavity fitting recess under this centre on the position of square hole and is symmetrically arranged with installing hole; Spacing card main body is flat, and the one end is provided with axle dress hole, and another end is provided with and is the convex arc shaped of being with spacing hole; The L-shaped bending in the two ends of spacing steel wire.

Under confined state, spacing card is arranged under the sliding shoe top in the concavity fitting recess on the installing hole on the cell wall of both sides by the movable assembling in the axle dress hole on the end, another end by its spacing hole, spacing by the steel wire of the L-shaped bending in two ends, check and balance near the working window of the left and right sides; Sliding shoe is by fitting recess and assembling groove on its middle and lower part, and setting-in is arranged in the middle and upper part broad U-shaped assembling draw-in groove and narrower U-shaped assembling draw-in groove of pushing block; Pushing block is arranged on the inner surface of cylindrical substrate by the external screw thread on its outer surface engagement, and can by means of with its lower surface on spacingly hold tool drives rotation that shrinkage pool is complementary, move up and down along the inner surface of cylindrical substrate.

During use, on needs traction position, bore earlier and insert the guiding draw point, again housing is enclosed within on the draw point perforation by the center on the middle straight-bar, turn cylindrical substrate again, housing self tapping under the guiding of draw point is entered in skin and the bone, rotate on the pushing block then and move, the other end of spacing card is taken advantage of a situation and is produced outside off normal power, it is stretching that L shaped on the steel cord end is forced to, so breaking away from restraining forces continues partially outer, trough rim touches spacing dividing plate until the sliding shoe top, spacing card is close to be limited between groove face and the spacing dividing plate, insert fully anchor in bone till, this moment just can extract draw point, after screwing in the special-purpose guiding piece that the band towing pad is set, the tail end intracavity of cylindrical substrate carries out towage; Can be after towage finishes by reverse rotation pushing block after unloading special-purpose guiding piece, order about spacing card and draw in thereupon and return the housing intracavity, the reverse rotation housing just can wholely take out then; And just can be for using next time after after screwing out pushing block, resetting spacing steel wire on the end at spacing card.

This utility model nose cone anchor type traction fixing device for fracture based on above-mentioned design, because global shape is especially as sub warhead, it is little, deep coniform easily that head is resistance when advancing, the cylindrical substrate periphery is provided with tapping screw thread, be engaged in easily and push away before taking advantage of a situation on the bone, can not produce sudden impulsive force to bone, so can not cause the situation that produces iatrogenic sclerotin splitting or fracture in the prior art; And can stretching device be set by the external screw thread on the cylindrical substrate, carry out stretching after the fracture operation that resets, stretching device is provided with conveniently, pull strength direction and steel wire axle be to consistent, little effect surrounding soft tissue greatly helps reducing patient's the misery and recovery, the minimizing sequela of postoperative; And owing to adopt single shaft to tractive manner, traction angle easily controls, is convenient to do as required the traction of the multi-angle property adjusted, traction effect is good, damage surface to patient tissue is minimum, can effectively avoid the generation of fracture complication, help shortening the pull-in time, wait for the time and the surgery cost of operation and the prolonged traction that is applied to the osteoporosis patient; And it is simple in structure, easy to use, reliable operation, effect significantly, can reuse and be easy to by plurality of advantages such as doctor and patient accept, all can't compare with any method or apparatus in the existing similar technology, be an important scientific and technical innovation in the surgical medical equipment in fact, have wide market application prospect, will produce immeasurable society and economic benefit.

Description of drawings

Fig. 1 is the population structure sketch map of this utility model embodiment;

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

Fig. 3 is the B-B cutaway view of Fig. 1;

Fig. 4 is the cutaway view of pushing block among Fig. 2;

Fig. 5 is the cutaway view of sliding shoe among Fig. 2;

Fig. 6 is the cutaway view of pushing block among Fig. 3;

Fig. 7 is the cutaway view of sliding shoe among Fig. 3.

Fig. 8 is the installment state sketch map of this utility model embodiment;

Fig. 9 is the working state schematic representation of this utility model embodiment.

Among the figure:

1. housing 2. pushing blocks 3. sliding shoes 4. spacing cards

5. straight-bar in the middle of spacing steel wire 6. coniform leading section 7. cylindrical substrates 8.

9. female thread 10. external screw threads 11. spacing dividing plate 12. working windows

13. the center is to the 14. square pilot hole 15. external screw threads 1 6. spacing shrinkage pools that hold of boring a hole

17. broad U-shaped assembling draw-in groove 18. narrower U-shaped assembling draw-in groove 19. fitting recess

20. 23. dresses of concavity fitting recess 22. installing holes hole under in the middle of the assembling groove 21.

24. spacing hole 25. draw points 26. towing pads 27. special-purpose guiding pieces

The specific embodiment

Below in conjunction with accompanying drawing and exemplary embodiments this utility model is further described.

In Fig. 1, this utility model nose cone anchor type traction fixing device for fracture is made of main part and auxiliary member, main part includes housing 1, pushing block 2, sliding shoe 3, spacing card 4 and spacing steel wire 5, auxiliary member includes wherein: housing 1 is by the coniform leading section 6 that is integrative-structure, cylindrical substrate 7 and middle straight-bar 8 constitute, the inner surface of cylindrical substrate 7 is provided with female thread 9, outer surface is provided with external screw thread 10, be provided with spacing dividing plate 11 in the intracavity junction of cylindrical substrate 7 and coniform leading section 6, be symmetrically arranged with left and right sides working window 12 near on the cylindrical substrate 7 of spacing dividing plate 11 simplified, middle straight-bar 8 main body frenulum centers are to boring a hole 13 square bar.

In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the diameter of pushing block 2 conforms to the intracavity diameter of cylindrical substrate 7, middle be equipped with square pilot hole 14 to wearing, outer surface is provided with the chamber wall of cylindrical substrate 7 on the external screw thread 15 that is complementary of female thread 9, the lower surface is provided with the spacing shrinkage pool 16 that holds, be provided with broad U-shaped assembling draw-in groove 17 by the upper part in the middle of near, nearly upper end face part is provided with narrower U-shaped assembling draw-in groove 18; Sliding shoe 3 centres are equipped with square pilot hole 14 to wearing, its nearly lower bottom part to nearly intermediary position is provided with the fitting recess 19 that links to each other with the square pilot hole 14 in centre, in the middle of near by on time position except that being provided with described fitting recess 19, both sides also are provided with assembling groove 20, concavity fitting recess 21 under in the middle of the top is symmetrically arranged with is symmetrically arranged with installing hole 22 on the position of the nearly square pilot hole 14 of the both sides of this fitting recess 21 cell wall; Spacing card 4 main bodys are flat, and the one end is provided with axle dress hole 23, and another end is provided with and is the convex arc shaped of being with spacing hole 24; The L-shaped bending in the two ends of spacing steel wire 5.

Under confined state, spacing card 4 is arranged on by its movable assembling in dress hole 23 under the top of sliding shoe 3 in the concavity fitting recess 21 on the installing hole 22 on the cell walls of both sides, another end by its

spacing hole

24,5 spacing by the spacing steel wire of the L-shaped bending in two ends, check and balance near left and right sides working window 12; Sliding shoe 3 is by fitting recess 19 and assembling groove 20 on its middle and lower part, and setting-in is arranged in the middle and upper part broad U-shaped assembling draw-in groove 17 and narrower U-shaped assembling draw-in groove 18 of pushing block 2; Pushing block 2 is arranged on the inner surface of cylindrical substrate 7 by 15 engagements of its external screw thread, and can by means of with its lower surface on spacingly hold tool drives rotation that shrinkage pool 16 is complementary, move up and down along the inner surface of cylindrical substrate 7.

At Fig. 1, among Fig. 8 and Fig. 9, during use, on needs traction position, bore earlier and insert guiding draw point 25, again housing 1 13 is enclosed within on the draw point 25 boring a hole by the center on the middle straight-bar 8, the turn cylindrical substrate 7 again, housing 1 self tapping under the guiding of draw point 25 is entered in skin and the bone, rotate on the pushing block then and move, the other end of spacing card 4 is taken advantage of a situation and is produced outside off normal power, it is stretching that L shaped on spacing steel wire 5 ends is forced to, so breaking away from restraining forces continues partially outer, trough rim on concavity fitting recess 21 under sliding shoe 3 tops touches spacing dividing plate 11, make spacing card 4 be close to deadline anchor between the bottom land and spacing dividing plate 11 of following concavity fitting recess 21, till being inserted in the bone fully, just can extract draw point 25 this moment, after screwing in the special-purpose guiding piece 27 that band towing pad 26 is set, the tail end intracavity of cylindrical substrate 7 just can carry out towage; After towage finishes can by unload special-purpose guiding piece 27, then reverse rotation pushing block 2, order about spacing card 4 and draw thereupon and return housing 1 intracavity, reverse rotation housing 1 just can whole taking-up then; And just can be fully for using next time after resetting spacing steel wire 5 on the end of spacing card 4 after screwing out pushing block 2 fully.

Claims

1. a nose cone anchor type traction fixing device for fracture is made of main part and auxiliary member, it is characterized in that:

A. include housing (1), pushing block (2), sliding shoe (3), spacing card (4) and spacing steel wire (5) in the main part, include draw point (25) and guiding piece (27) in the auxiliary member;

B. housing (1) is made of the coniform leading section (6) that is integrative-structure, cylindrical substrate (7) and middle straight-bar (8), the inner surface of cylindrical substrate (7) is provided with female thread (9), outer surface is provided with external screw thread (10), intracavity junction at cylindrical substrate (7) and coniform leading section (6) is provided with spacing dividing plate (11), be symmetrically arranged with left and right sides working window (12) on the cylindrical shell near the cylindrical substrate (7) of spacing dividing plate (11), middle straight-bar (8) frenulum center is to the square bar of perforation (13);

C. the diameter of pushing block (2) conforms to the intracavity diameter of cylindrical substrate (7), middle be equipped with square pilot hole (14) to wearing, outer surface is provided with the chamber wall of cylindrical substrate (7) on the external screw thread (15) that is complementary of female thread (9), the lower surface is provided with the spacing shrinkage pool (16) that holds, be provided with broad U-shaped assembling draw-in groove (17) by the upper part in the middle of near, nearly upper end face part is provided with narrower U-shaped assembling draw-in groove (18);

D. sliding shoe (3) centre is equipped with square pilot hole (14) to wearing, its nearly lower bottom part to nearly intermediary position is provided with the fitting recess (19) that links to each other with middle square pilot hole (14), in the middle of near by on time position except that being provided with described fitting recess (19), both sides also are provided with assembling groove (20), concavity fitting recess (21) under in the middle of the top is symmetrically arranged with is symmetrically arranged with installing hole (22) on the position of the nearly square pilot hole of the both sides cell wall of fitting recess (21) (14);

E. spacing card (4) main body is flat, and the one end is provided with axle dress hole (23), and another end is provided with the convex arc shaped that is band spacing hole (24);

The L-shaped bending in two ends of f. spacing steel wire (5);

G. guiding piece (2) 7 is provided with towing pad (26).

2. card nose cone anchor type traction fixing device for fracture according to claim 1, it is characterized in that described spacing card (4) is arranged on by the movable assembling in its axle dress hole (23) under the top of sliding shoe (3) on the installing hole (22) on the cell wall of the interior both sides of concavity fitting recess (21), another end by its spacing hole (24), spacing by the spacing steel wire (5) of the L-shaped bending in two ends, check and balance near left and right sides working window (12).

3. card nose cone anchor type traction fixing device for fracture according to claim 1, it is characterized in that described sliding shoe (3) by fitting recess (19) and assembling groove (20) on its middle and lower part, setting-in is arranged in the middle and upper part broad U-shaped assembling draw-in groove (17) and narrower U-shaped assembling draw-in groove (18) of pushing block (2).

4. card nose cone anchor type traction fixing device for fracture according to claim 1 is characterized in that described pushing block (2) is arranged on the inner surface of cylindrical substrate (7) by its external screw thread (15) engagement.

5. card nose cone anchor type traction fixing device for fracture according to claim 1 is characterized in that described special-purpose guiding piece (27) is arranged on the tail end intracavity of cylindrical substrate (7).