CN101229076A

CN101229076A - Fracture reverser

Info

Publication number: CN101229076A
Application number: CNA2008100545563A
Authority: CN
Inventors: 吴春生; 李增利; 吴婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-20
Filing date: 2008-02-20
Publication date: 2008-07-30
Anticipated expiration: 2028-02-20
Also published as: CN101229076B

Abstract

A fracture repositor belongs to a technical field of surgical medical appliance used for providing a fracture repository which carries out draught on a wounded limb under a closed situation and uses an ejector pin to carry out ejection, lifting and pushing, reposition and temporary fixing, and can be arranged in an inner fixing device under a minimal invasion situation with the advantages of few bleeding, short operation time and fast concrescence. A rack is arranged at one side of a guide rod and the guide rod is provided with two sliding guides. Each sliding guide is provided with a gear engaged with the rack and is fixed with a single-direction limiting mechanism provided with a tow rod and a gear. One end of a gear shaft is provided with a rotary handle or a hexagon head. The tow rod is provided with a clamping mechanism and the guide rod between the two sliding guides is provided with two to six fixing rods. An adjustable mechanism for mutual positions is arranged between the fixing rods and the guide rod. The fixing rods are provided with the clamping mechanism fixing a Kirschner steel needle or the ejector pin. The invention can be arranged in the inner fixing device under the minimal invasion situation only to beat into a Kirschner steel pin arranging hole with an aiguille, thus having the advantages of small damage to a patient, high fracture concrescence rate, short operation time and low operation cost.

Description

Fracture reposition instrument

Technical field

The present invention relates to a kind of fracture reposition instrument, belong to the surgical medical equipment technical field.

Background technology

Current, the position that displacement fracture takes place is undergone surgery and needs to implant inner fixer fixedly the time, the otch that often need undergo surgery, traction and the manual reduction supervisor of fracturing, its weak point is that operating time is long, medical personnel's working strength is big.In addition, utilize said method treatment fracture, big to the fracture site wound, hemorrhage many, easy infection is unfavorable for union of fracture, and the medical care expenses that the patient bears is also higher.

Summary of the invention

The object of the present invention is to provide a kind of fracture reposition instrument, use this positor can be under the situation of closure to suffer from that limb draws and with the pushing and withstanding pin carry out pushing and withstanding, prize dial, reset, temporary fixed, it under Wicresoft's situation implantable inner fixer, wound is little, go out insufficiency of blood, operating time is short, and union of fracture is fast, better function.

It is as follows to address the above problem the technical scheme that is adopted:

A kind of fracture reposition instrument, comprise guide rod, guide rod one side is a tooth bar, and two balladeur trains are housed on the guide rod, and the gear that is meshed with tooth bar all is housed on each balladeur train, be fixed with the one-directional rotation position-limit mechanism of a draw bar and gear, gear shaft one end is established the turn handle or is established turret head, and clamping device is housed on the draw bar, is equipped with two to six roots of sensation fixed bar on the guide rod between two balladeur trains, establish the mutual alignment adjustable mechanism between fixed bar and guide rod, the clamping device of fixation Kel's draw point is housed on the fixed bar.

Above-mentioned fracture reposition instrument, the one-directional rotation position-limit mechanism of said gear is the ratchet hinged with balladeur train, and ratchet is meshed with tooth bar, and ratchet is provided with cylindrical screw reverse reset spring.

Above-mentioned fracture reposition instrument, the one-directional rotation position-limit mechanism of said gear is ratchet, detent mechanism, and wherein, ratchet and gear shaft are fixed, and ratchet and balladeur train are hinged.

Above-mentioned fracture reposition instrument, on the said draw bar on the set clamping device clamping auxiliary traction bar is arranged, the clamping device of fixation Kel's draw point is housed on the auxiliary traction bar.

Above-mentioned fracture reposition instrument, set mutual alignment adjustable mechanism is a clamping device between said fixed bar and guide rod, and the lock-screw head string of clamping device is contained on the guide rod, and fixed bar is located at by between the upper collet of nut check and the following locking plate.

This fracture reposition instrument is a kind of interim reduction of the fracture fixture.When the limbs to the patient carry out displacement fracture reduction operation, need insert again under the fixed situation of inner fixer, just can draw, reset affected part in advance by means of this fracture reposition instrument and under X line perspective, and then insert inner fixer and fix, after internal fixation is finished, just can take off this fracture reposition instrument from affected part.The fracture reposition instrument that takes off can continue to use when performing the operation next time after strict sterilization.When using this positor to carry out when temporary fixed, only needing to squeeze into Kirschner wire at affected part with drill bit inserts the hole and gets final product, so needn't otch, under Wicresoft's situation, just can insert inner fixer, the patient is damaged little, go out insufficiency of blood, easy infection not, union of fracture rate height, operating time is short, medical personnel's labor intensity is little, and expenses of surgical treatment is low.

Fig. 1 is that the master of the embodiment of the invention one looks sketch map;

Fig. 2 is the vertical view of Fig. 1

Fig. 3 is the partial structurtes sketch map of the embodiment of the invention two.

Number in the figure is expressed as follows: 1. Ke Shi draw point; 2. cylindrical screw reverse reset spring; 3. gear; 4. gear shaft; 5. turret head; 6. ratchet; 7. first clamping device; 8. Ke Shi draw point; 9. second clamping device; 10. nut; 11. fixed bar; 12. upper collet; 13. following locking plate; 14. lock-screw; 15. balladeur train; 16. tooth bar; 17. auxiliary traction bar; 18. guide rod; 19. the 3rd clamping device; 20. the 4th clamping device; 21. draw bar; 22. ratchet; 23. ratchet.

The specific embodiment

The invention will be further described below in conjunction with the embodiment accompanying drawing:

Referring to Fig. 1, Fig. 2, comprise in the formation of embodiment one fracture reposition instrument that a side is provided with the guide rod 18 of tooth bar 16, the cross section of guide rod 18 is rectangle or square.16 of two balladeur trains 15 being adorned on the guide rod 18 and guide rods are for being slidingly matched, one gear 3 that is meshed with tooth bar 16 all is housed on each balladeur train 15, each balladeur train 15 1 face down bonding connects or rivets a drawing-off bar 21, and the axis of the axis of draw bar 21 and guide rod 18 is perpendicular.The 4th clamping device 20 is housed on the draw bar 21.According to the operation needs, the 4th clamping device 20 can be directly and Ke Shi draw point 1 grip, also can grip with auxiliary traction bar 17.When the 4th clamping device 20 grips with auxiliary traction bar 17, need the 3rd clamping device 19 of dress fixation Kel's draw point 1 on the auxiliary traction bar 17.Also be hinged with the ratchet 6 of limiting gear 3 counter-rotatings on the balladeur train 15, ratchet 6 is provided with cylindrical screw reverse reset spring 2, and ratchet 6 is meshed with tooth bar 16.Gear 3 is fixing with gear shaft 4, and gear shaft 4 one ends are established the turn handle or established turret head 5.If during turret head 5, need gear 3 to be rotated by spanner, in operation process, when need draw affected part, with the turret head 5 of two gear shafts 4 of spanner turn, make two gears 3 all to tooth bar 16 outer end turns, the spacing that is about to 15 of two balladeur trains widens, and simultaneously, reaches the purpose of traction fracture site by draw bar 21, Ke Shi draw point 1 and link therebetween etc., and spacing by ratchet 6, prevent gear 3 counter-rotatings.During as 3 counter-rotatings of need gear, the tail end with the moving ratchet 6 of hand makes ratchet 6 separate with tooth bar 16 and gets final product.

For the fracture site that makes displacement resets and is temporarily fixed, on the guide rod 18 of 15 of two balladeur trains, be equipped with two to six roots of sensation fixed bar 11, fixed bar 11 and 18 of guide rods can be established that first clamping device 7 is connected and be fixing, when adopting first to add when holding mechanism 7, the head string of its lock-screw 14 is contained on the guide rod 18, and fixed bar 11 is located between the upper collet 12 and following locking plate 13 of locking by nut 10.Fixed bar 11 is provided with second clamping device 9 of fixation Kel's draw point 8 or pushing and withstanding pin.

Fixed bar 11 also can adopt sliding sleeve to be connected with 18 of guide rods, and promptly fixed bar 11 is connected with a sliding sleeve vertical fixing, and sliding sleeve is sleeved on the guide rod 18, and is close to and decides screw location and fixing.

In invention, a plurality of clamping devices that adopted all have prior art.

Referring to Fig. 3, embodiment two and embodiment one are different is that the one-directional rotation position-limit mechanism of gear 3 is a ratchet, detent mechanism, and wherein, ratchet 23 is fixing with gear shaft 4, and ratchet 22 is hinged with balladeur train 15.Ratchet 22 also can be established back-moving spring.When 3 counter-rotatings of need gear, lift ratchet 22 heads with hands, its disengaging and the engagement of ratchet 23 are got final product.

Claims

1. fracture reposition instrument, it is characterized in that, it comprises guide rod [18], guide rod [18] one sides are tooth bar [16], two balladeur trains [15] are housed on the guide rod [18], the gear [3] that is meshed with tooth bar [16] all is housed on each balladeur train [15], be fixed with the one-directional rotation position-limit mechanism of a draw bar [21] and gear [3], gear shaft [4] one ends are established the turn handle or are established turret head [5], the 4th clamping device [20] is housed on the draw bar [21], be equipped with two to six roots of sensation fixed bar [11] on the guide rod [18] between two balladeur trains [15], establish the mutual alignment adjustable mechanism between fixed bar [11] and guide rod [18], second clamping device [9] of fixation Kel's draw point [8] is housed on the fixed bar [11].

2. fracture reposition instrument according to claim 1 is characterized in that: the one-directional rotation position-limit mechanism of said gear [3] is the ratchet [6] hinged with balladeur train [15], and ratchet [6] is meshed with tooth bar [16], and ratchet [6] is provided with cylindrical screw reverse reset spring [2].

3. fracture reposition instrument according to claim 1 is characterized in that: the one-directional rotation position-limit mechanism of said gear [3] is ratchet, detent mechanism, and wherein, ratchet [23] is fixing with gear shaft [4], and ratchet [22] is hinged with balladeur train [15].

4. fracture reposition instrument according to claim 1 is characterized in that: said the 4th clamping device [20] is gone up clamping auxiliary traction bar [17], and the 3rd clamping device [19] of fixation Kel's draw point [1] is housed on the auxiliary traction bar [17].

5. fracture reposition instrument according to claim 1, it is characterized in that: set mutual alignment adjustable mechanism is first clamping device [7] between said fixed bar [11] and guide rod [18], its head string of lock-screw [4] of first clamping device [7] is contained on the guide rod [18], and fixed bar [11] is located between the upper collet [12] and following locking plate [13] of locking by nut [10].