CN201239187Y - Universal fine-adjustment type traction reduction instrument - Google Patents
Universal fine-adjustment type traction reduction instrument Download PDFInfo
- Publication number
- CN201239187Y CN201239187Y CNU2008201374331U CN200820137433U CN201239187Y CN 201239187 Y CN201239187 Y CN 201239187Y CN U2008201374331 U CNU2008201374331 U CN U2008201374331U CN 200820137433 U CN200820137433 U CN 200820137433U CN 201239187 Y CN201239187 Y CN 201239187Y
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- screw
- pin
- folder
- nut sleeve
- screw rod
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Abstract
The utility model belongs to a medical instrument and particularly relates to a universal vernier-regulation retraction repositor in the orthopaedics appliances, which comprises a bidirectional adjustment nut sleeve 6 or a bidirectional adjustment screw rod 6, a left screw 5 and a right screw 7 or a left nut sleeve and a right nut sleeve, a pair of universal joints, a pair of screw clampers and a fixation pin 1. The universal vernier-regulation retraction repositor is characterized in that both ends of the bidirectional adjustment nut sleeve 6 or the bidirectional adjustment screw rods are respectively connected with the universal joints by the left screw rod 5 and the right screw rod 7 or the left nut sleeve and the right nut sleeve , the nut sleeves on both ends of the bidirectional adjustment nut sleeve 6 or the left nut sleeve and the right nut sleeve are correspondingly provided with a pair of screw holes, a locking screw 13 is respectively connected with the left screw 5 and the right screw 7 by the screw holes or the bidirectional adjustment screw in a positioning mode, and the other ends of the universal joints are respectively connected with the screw clampers which are connected with the fixation pins 1,15. The utility model can be used for the random rotational correction of both ends of the bone fracture part, has small correction amplitude, reliable and stable positioning, is helpful for installing a steel board stepping over the bone fracture ends, and can effectively reset and fix the bone fracture part without contact.
Description
Technical field
This utility model belongs to medical apparatus and instruments, and particularly a kind of universal fine adjustment type in the orthopedic instrument retracts positor.
Background technology
The development of orthopaedics and the renewal of orthopedic instrument are closely bound up, and the development of orthopedic instrument is the appearance of orthopaedics new theory. in recent years based on the fracture biology internal fixation theory, Chinese scholars has proposed fracture resetting technique biology, and some effective traction restorers have been designed, as single-mode retractor and tridimensional model retractor, can retract effectively and reset, but existing retracting operated comparatively complexity in the positor use, and can not control the rotation of fracture site, can not further correct for the lateral displacement of fracture.Though prior art provides some schemes for solving this technical barrier, as: publication number: CN2713988, title " universal fracture distraction reduction device ", it comprises flexible connecting screw rod, two sections reverse inner bolt holes prolong sleeve, its two ends are connected with flexible connecting screw rod, in the latch patchhole, the rotation may command is flexible; Flexible connecting screw rod one end connects tapping screw, and wherein a flexible connecting screw rod end connects for the universal joint bulb, can do rotation arbitrarily and correct angulation deformity.But, still there is poor stability in it, unidirectional rectification amplitude is big, shortcomings such as the universal joint bulb is easy to wear, therefore, prior art is still waiting further raising, particularly at the stability, the corrigent motility of the control rotation aspect that improve fracture end, designs a kind of new universal positor that retracts and seems particularly necessary.
Summary of the invention
The purpose of this utility model is to provide a kind of and can improves the stability of fracture end and the universal positor that retracts of the corrigent motility of control rotation.
This utility model is achieved in that it comprises two-ways regulation nut sleeve or screw rod, a left side, right screw rod or nut sleeve, a pair of universal joint, pair of screws anchor clamps and locking pin, two-ways regulation nut sleeve or screw rod and a left side, right screw rod or nut sleeve correspondence, the two ends of two-ways regulation nut sleeve or screw rod are respectively by a left side, right screw rod or nut sleeve are connected with a pair of universal joint, on the nut body at the two ends of a two-ways regulation nut sleeve or left side, correspondence is provided with the pair of screws hole on the right nut body, tight lock screw by the pair of screws hole respectively with a left side, right screw rod or two-ways regulation screw rod are located by connecting, the other end of universal joint is connected with the pair of screws anchor clamps respectively, and the screw anchor clamps are connected with locking pin.
Universal joint comprises cross-pin type joint, slide block and section header seat, one end of cross-pin type joint is connected with the screw anchor clamps, the other end of cross-pin type joint is the spheroid section header, the spheroid section header is connected with slide block, the section header seat is connected with the screw bolt seat or the nut sleeve of left and right screw rod, the screw bolt seat of left and right screw rod or the end face of nut sleeve are provided with slide block slot and are connected with slide block, and screw bolt seat radially connects eccentric pin, and eccentric pin is connected with slide block.Eccentric pin is by being connected the spheroid section header location to cross-pin type joint with the slide block of cross-pin type joint.
This utility model compact conformation, rationally distributed, adopt a pair of universal joint, can do rotation arbitrarily at the fracture site two ends and correct, the rectification amplitude is little, fine-tuning, implement Minimally Invasive Surgery, regulate flexibly, tight lock screw is reliable to the positioning stablity of spheroid section header by slide block to the location and the eccentric pin of left and right screw rod, be beneficial to and lay the steel plate of crossing over fracture end, fracture is carried out the active homing of " not contacting " and fixing, be beneficial to union of fracture.
Description of drawings
Fig. 1, this utility model embodiment 1 structural representation.
Fig. 2, this utility model embodiment 2 structural representations.
Among Fig. 1 and Fig. 2: locking pin 1, screw folder 2, screw folder 3, section header seat 4, left side screw rod 5, two-ways regulation nut sleeve 6, right screw rod 7, eccentric pin 8, slide block 9, cross-pin type joint 10, steady pin 11, bolt 12 is tightly locked screw 13, tight lock screw 14, locking pin 15, dog screw 16, active pointer folder 17, pin folder guide rod 18, locking pin folder 19.
The specific embodiment
Embodiment 1: it comprises two-ways regulation nut sleeve 6, left and right screw rod 5,7, a pair of universal joint, pair of screws anchor clamps and locking pin 1, the two ends of two-ways regulation nut sleeve 6 are connected with a pair of universal joint by left and right screw rod 5,7 respectively, correspondence is provided with the pair of screws hole on the nut body at the two ends of two-ways regulation nut sleeve 6, tight lock screw 13 is located by connecting with left and right screw rod 5,7 respectively by the pair of screws hole, the other end of universal joint is connected with the pair of screws anchor clamps respectively, and the screw anchor clamps are connected with locking pin 1,15.
Universal joint comprises cross-pin type joint 10, slide block 9 and section header seat 4, one end of cross-pin type joint 10 is connected with the screw anchor clamps, the other end of cross-pin type joint 10 is the spheroid section header, the spheroid section header is connected with slide block 9, section header seat 4 is connected with the screw bolt seat of left and right screw rod 5,7, the end face of the screw bolt seat of left and right screw rod 5,7 is provided with slide block slot and is connected with slide block 9, and screw bolt seat radially connects eccentric pin 8, and eccentric pin 8 is connected with slide block 9.Eccentric pin is by being connected the spheroid section header location to cross-pin type joint with the slide block of cross-pin type joint.
As when adopting the two-ways regulation screw rod to be connected with left and right nut sleeve, correspondence is provided with the pair of screws hole on the left and right nut body, tightly lock screw 13 by the pair of screws hole respectively the two-ways regulation screw rod be located by connecting, section header seat 4 is connected with left and right nut sleeve.
The screw anchor clamps comprise two screws folder 2,3, and an end interference fit of an end of cross-pin type joint 10 and screw folder 2 also is connected by steady pin 11, passes through bolt 12 connections between the screw folder 2,3, and screw presss from both sides 2,3 and is connected with locking pin 1.
The two ends of two-ways regulation nut sleeve 6 are reverse internal threaded nut cover, the centre is the hexagonal (hexagon)nut head, the external screw thread of left and right screw rod 5,7 also is a reverse thread and corresponding with the reverse female thread of two-ways regulation nut sleeve 6, the anglec of rotation of cross-pin type joint 10 can be set as required, generally in 60 ° of angular ranges.
Using method: squeeze into two pieces of schanz locking pins 1 respectively at the fracture two ends, the universal two ends screw folder that retracts positor 2,3 is clamped two pieces of schanz locking pins 1 respectively by bolt 12, rotate intermediary two-ways regulation nut sleeve 6, fracture end is slowly retracted, the general mistake led about 5mm, can reach substantially to reset; By tightening 13 pairs of two-ways regulation nut sleeve of tight lock screw, 6 location, just may command fracture two ends is stable, the perspective rotation is corrected, as the rectification of fracturing is undesirable, can be by the cross-pin type joint 10 of eccentric pin 8 loose ends, the rectification that resets of further fracturing is after the rectification that resets is finished, by eccentric pin 8 tight lock cross-pin type joints 10, do next step operation more again.
Embodiment 2: adopt secondary to regulate location structure, the screw anchor clamps are further improved, the screw anchor clamps comprise floating holder and stationary fixture, floating holder is made up of active pointer folder 17 and pin folder guide rod 18, stationary fixture is made up of locking pin folder 19, one end of a cross-pin type joint 10 is connected with pin folder guide rod 18 by steady pin 11, active pointer folder 17 is slidingly connected and is located by connecting by dog screw 16 with pin folder guide rod 18, active pointer folder 17 is connected with locking pin 15 by tight lock screw 14, one end of another cross-pin type joint 10 connects by steady pin 11 locking pins folder 19, and locking pin folder 19 is connected with locking pin 15 by tight lock screw 14.Other structure is similar to embodiment 1, during use, can regulate active pointer folder 17 by dog screw 16 earlier, and re-adjustment two-ways regulation nut sleeve 6 or screw rod are realized secondary adjusting location.
Embodiment 3: the screw folder is made up of a pair of active pointer folder 17 and pin folder guide rod 18, one end of cross-pin type joint 10 is connected with pin folder guide rod 18 by steady pin 11, active pointer folder 17 is slidingly connected and is located by connecting by dog screw 16 with pin folder guide rod 18, and active pointer folder 17 is connected with locking pin 15 by tight lock screw 14.Other structure is similar to embodiment 2, during use, can be earlier by dog screw 16 two-ways regulation active pointers folder 17, and re-adjustment two-ways regulation nut sleeve 6 or screw rod are realized secondary adjusting location, range of accommodation is bigger.
Claims (5)
1, a kind of universal fine adjustment type retracts positor, it comprises two-ways regulation nut sleeve (6) or screw rod, a left side, right screw rod (5,7) or nut sleeve, a pair of universal joint, pair of screws anchor clamps and locking pin (1), two-ways regulation nut sleeve (6) or a screw rod and a left side, right screw rod (5,7) or the nut sleeve correspondence, it is characterized in that: the two ends of two-ways regulation nut sleeve (6) or screw rod are respectively by a left side, right screw rod (5,7) or nut sleeve be connected with a pair of universal joint, on the nut body at the two ends of two-ways regulation nut sleeve (a 6) or left side, correspondence is provided with the pair of screws hole on the right nut body, tight lock screw (13) by the pair of screws hole respectively with a left side, right screw rod (5,7) or the two-ways regulation screw rod be located by connecting, the other end of universal joint is connected with the pair of screws anchor clamps respectively, screw anchor clamps and locking pin (1,15) connect.
2, a kind of universal fine adjustment type according to claim 1 retracts positor, it is characterized in that: universal joint comprises cross-pin type joint (10), slide block (9) and section header seat (4), one end of cross-pin type joint (10) is connected with the screw anchor clamps, the other end of cross-pin type joint (10) is the spheroid section header, the spheroid section header is connected with slide block (9), a section header seat (4) and a left side, right screw rod (5,7) screw bolt seat or nut sleeve connect, a left side, right screw rod (5,7) the screw bolt seat or the end face of nut sleeve are provided with slide block slot and are connected with slide block (9), screw bolt seat radially connects eccentric pin (8), and eccentric pin (8) is connected with slide block (9).
3, a kind of universal fine adjustment type according to claim 1 and 2 retracts positor, it is characterized in that: the screw anchor clamps comprise two screw folders (2,3), one end of cross-pin type joint (10) also is connected by steady pin (11) with an end interference fit of screw folder (2), connect by bolt (12) between the screw folder (2,3), screw folder (2,3) is connected with locking pin (1).
4, a kind of universal fine adjustment type according to claim 1 and 2 retracts positor, it is characterized in that: the screw anchor clamps comprise floating holder and stationary fixture, floating holder is made up of active pointer folder (17) and pin folder guide rod (18), stationary fixture is made up of locking pin folder (19), one end of a cross-pin type joint (10) is connected with pin folder guide rod (18) by steady pin (11), active pointer folder (17) is slidingly connected and is located by connecting by dog screw (16) with pin folder guide rod (18), active pointer folder (17) is connected with locking pin (15) by tight lock screw (14), one end of another cross-pin type joint (10) connects by steady pin (11) locking pin folder (19), and locking pin folder (19) is connected with locking pin (15) by tight lock screw (14).
5, a kind of universal fine adjustment type according to claim 1 and 2 retracts positor, it is characterized in that: the screw folder is made up of a pair of active pointer folder (17) and pin folder guide rod (18), one end of cross-pin type joint (10) is connected with pin folder guide rod (18) by steady pin (11), active pointer folder (17) is slidingly connected and is located by connecting by dog screw (16) with pin folder guide rod (18), and active pointer folder (17) is connected with locking pin (15) by tight lock screw (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201374331U CN201239187Y (en) | 2008-08-22 | 2008-08-22 | Universal fine-adjustment type traction reduction instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201374331U CN201239187Y (en) | 2008-08-22 | 2008-08-22 | Universal fine-adjustment type traction reduction instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201239187Y true CN201239187Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201374331U Expired - Fee Related CN201239187Y (en) | 2008-08-22 | 2008-08-22 | Universal fine-adjustment type traction reduction instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201239187Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287814A (en) * | 2014-10-27 | 2015-01-21 | 毕宏政 | Multi-angle positioner for screw |
| CN107080582A (en) * | 2016-02-16 | 2017-08-22 | 宋若怡 | Flexible spinal fixed system and pressure-adjustable hold-down bars |
| CN107080581A (en) * | 2016-02-16 | 2017-08-22 | 宋若怡 | Elastic internal fixation system and pressure-adjustable hold-down bars |
-
2008
- 2008-08-22 CN CNU2008201374331U patent/CN201239187Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287814A (en) * | 2014-10-27 | 2015-01-21 | 毕宏政 | Multi-angle positioner for screw |
| CN107080582A (en) * | 2016-02-16 | 2017-08-22 | 宋若怡 | Flexible spinal fixed system and pressure-adjustable hold-down bars |
| CN107080581A (en) * | 2016-02-16 | 2017-08-22 | 宋若怡 | Elastic internal fixation system and pressure-adjustable hold-down bars |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20090922 |