CN204072289U - Controlled single arm type exterior fixation bracket - Google Patents
Controlled single arm type exterior fixation bracket Download PDFInfo
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- CN204072289U CN204072289U CN201420489479.5U CN201420489479U CN204072289U CN 204072289 U CN204072289 U CN 204072289U CN 201420489479 U CN201420489479 U CN 201420489479U CN 204072289 U CN204072289 U CN 204072289U
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- connecting rod
- sleeve
- shank
- screw
- female thread
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Abstract
This utility model provides a kind of controlled single arm type exterior fixation bracket, and its structure comprises sleeve, left connecting rod, right connecting rod, left shank of screw and right shank of screw; Sleeve two ends are provided with forward and reverse female thread; Left shank of screw cross-under is at the left end of left connecting rod, and the forward female thread that the right-hand member of left connecting rod stretches in sleeve left end and sleeve is spirally connected; Right shank of screw cross-under is at the right-hand member of right connecting rod, and the reverse female thread that the left end of right connecting rod stretches in sleeve right-hand member and sleeve is spirally connected.Forward or backwards during rotational sleeve, left connecting rod and right connecting rod by axially moving dorsad or in opposite directions in opposite direction at sleeve, thus make support extending or shorten.This utility model structure is simple, practical, easy and simple to handle, can meet clinical in different demands to stent length.Adopt this utility model can realize pressurization simply, quickly and easily, particularly suitable Rhizoma Atractylodis Macrocephalae position needs the situation of pressurization, adds motility and the practicality of the use of single arm type exterior fixation bracket.
Description
Technical field
This utility model relates to a kind of Orthopedic Clinical fixed support, specifically a kind of controlled single arm type exterior fixation bracket.
Background technology
After extremity fracture, need to be fixed skeleton, help it recover as soon as possible and heal, Orthopaedic external fixator (abbreviation exterior fixation bracket) is one of medical apparatus and instruments that Orthopedic Clinical is commonly used.Exterior fixation bracket has good stability and invasive, and therefore it applies comparatively extensive clinically.
Representative exterior fixation bracket can be divided into following three classes: single arm type exterior fixation bracket, ring type exterior fixation bracket and Combined type external fixed support.It is early stage temporary fixed that single arm type exterior fixation bracket is generally used as fracture, and it has good stability and early stage resiliently mounted feature, and simple to operate, damages little.But the length of traditional single arm type exterior fixation bracket is invariable, it usually can not extend in clinical, namely can not pressurize to the fracture of patient.Pressurize in clinical if want, just need to change the longer single arm type exterior fixation bracket of length, this not only makes complex operation, wastes time and energy, and adds the pain of patient.
Utility model content
The purpose of this utility model is just to provide a kind of controlled single arm type exterior fixation bracket, needs to change to solve existing single arm type exterior fixation bracket the problem causing complex operation, increase patient pain compared with long stent when facing pressurization problem.
This utility model is achieved in that a kind of controlled single arm type exterior fixation bracket, comprising:
Sleeve, left end is provided with forward female thread, and right-hand member is provided with reverse female thread;
Left connecting rod, left end has opening left U-type groove left, and right-hand member is provided with the right-hand thread section matched with described sleeve left end female thread, and described left connecting rod is connected with the described forward female thread in described sleeve by described right-hand thread section;
Right connecting rod, right-hand member has opening right U-type groove to the right, and left end is provided with the left-hand thread section matched with described sleeve right-hand member female thread, and described right connecting rod is connected with the described reverse female thread in described sleeve by described left-hand thread section;
Left shank of screw, its top is provided with thread segment, and its hypomere is polished rod, is being provided with convex edge near thread segment place, top, in the top cross-under of the described left shank of screw described left U-type groove on described left connecting rod, can described left shank of screw be fastened on described left connecting rod by nut and convex edge; And
Right shank of screw, its top is provided with thread segment, and its hypomere is polished rod, is being provided with convex edge near thread segment place, top, in the top cross-under of the described right shank of screw described right U-type groove on described right connecting rod, described right shank of screw can be fastened on described right connecting rod by nut and convex edge.
The outer peripheral face of described sleeve is coarse grid surface.
The left end of described sleeve is provided with the left stroke limit ring for preventing described left connecting rod from screwing out described sleeve; The right-hand member of described sleeve is provided with the right stroke limit ring for preventing described right connecting rod from screwing out described sleeve.
Described left connecting rod and described right connecting rod are respectively equipped with at least two clamping planes.
The upper/lower terminal side of described left U-type groove is planar structure; The upper/lower terminal side of described right U-type groove is planar structure.
This utility model is provided with forward and reverse female thread at the two ends of sleeve, sleeve is threaded with left connecting rod and right connecting rod respectively by the forward and reverse female thread in it, forward or backwards during rotational sleeve, left connecting rod and right connecting rod by axially moving dorsad or in opposite directions in opposite direction at sleeve, thus make support extending or shorten.This utility model structure is simple, practical, easy and simple to handle, can meet clinical in different demands to stent length.When needing to pressurize to the fracture of patient, no longer needing the support changing length longer to realize, but realizing the prolongation of support by rotational sleeve, thus reaching the object of pressurization.Therefore employing this utility model can realize pressurization simply, quickly and easily, also can avoid the pain brought to patient because changing support, and particularly suitable Rhizoma Atractylodis Macrocephalae position needs the situation of pressurization, adds motility and the practicality of the use of single arm type exterior fixation bracket.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, this utility model comprises left connecting rod 1, right connecting rod 3, sleeve 2, left shank of screw 4 and right shank of screw 5.Sleeve 2 one aspect is used for left connecting rod 1 and right connecting rod 3 to couple together, and passes through rotational sleeve 2 forward or backwards on the other hand, can realize support is elongated or shortened.The cross-under of left shank of screw 4 is at the left end of left connecting rod 1, and the cross-under of right shank of screw 5 is at the right-hand member of right connecting rod 3, and left shank of screw 4 and right shank of screw 5 are respectively used to nail at the two ends of patients with fractures.
Left end in sleeve 2 is provided with one section of forward female thread, and this forward female thread generally starts to arrange from the left side of sleeve 2 left end; Right-hand member in sleeve 2 is provided with one section of reverse female thread, and this reverse female thread generally starts to arrange from the right side of sleeve 2 right-hand member; The length of forward female thread and reverse female thread is suitable.Left connecting rod 1 and right connecting rod 3 are generally cylindrical structural, and it can be processed by stainless steel bars, carbon fiber.The right-hand member of left connecting rod 1 is provided with the right-hand thread section matched with the forward female thread in sleeve 2, and the right-hand member of left connecting rod 1 stretches in sleeve 2 from the left end of sleeve 2, and the forward female thread realized in the right-hand thread section of left connecting rod 1 and sleeve 2 is spirally connected; The left end of right connecting rod 3 is provided with the left-hand thread section matched with the reverse female thread in sleeve 2, and the left end of right connecting rod 3 stretches in sleeve 2 from the right-hand member of sleeve 2, and the reverse female thread realized in the left-hand thread section of right connecting rod 3 and sleeve 2 is spirally connected.
Rotational sleeve 2 forward or backwards, left connecting rod 1 and right connecting rod 3 axially will move in opposite direction dorsad or in opposite directions at sleeve 2, thus realize elongating or shortening of support.In support shortening process, in sleeve 2, the thread termination end of forward female thread and reverse female thread becomes the stroke limit point in this support shortening process.In support elongation process, screw out in sleeve 2 to prevent left connecting rod 1 and right connecting rod 3, the left end of sleeve 2 is provided with left stroke limit ring 6, the right-hand member of sleeve 2 is provided with right stroke limit ring (not shown), this left stroke limit ring 6 and right stroke limit ring embed in sleeve 2 by corresponding aid, thus in support elongation process, avoid left connecting rod 1 and right connecting rod 3 to screw out sleeve 2.
When rotational sleeve 2, in order to increase the frictional force of sleeve 2 outer peripheral face, the outer peripheral face of sleeve 2 can be set to coarse grid surface or flank.
During rotational sleeve 2, should ensure that left connecting rod 1 and right connecting rod 3 do not rotate, therefore need employing instrument or staff to clamp left connecting rod 1 and right connecting rod 3.Clamp left connecting rod 1 and right connecting rod 3 for the ease of instrument or staff, at least two clamping planes can be set on left connecting rod 1, right connecting rod 3 arranges at least two clamping planes.
The left end of left connecting rod 1 has opening left U-type groove left, and two U-shaped arms of left U-type groove are that front and back are arranged, in the top cross-under of the left shank of screw 4 left U-type groove on left connecting rod 1.The top of left shank of screw 4 is provided with thread segment, and its bottom is cone-shaped structure; Convex edge is being provided with near thread segment place, top, the external diameter of convex edge is greater than the groove width of left U-type groove, the top of left shank of screw 4 can be made during cross-under to penetrate from the bottom to top or from left to right in left U-type groove, and the convex edge end face on left shank of screw 4 is contacted with the lower end side of left U-type groove, then adopt the nut matched with left shank of screw 4 top thread segment to be fastened on left connecting rod 1 by left shank of screw 4.Certainly, the external diameter of the nut matched with left shank of screw 4 top thread segment should be greater than the groove width of left U-type groove.In this utility model, the upper/lower terminal side of left U-type groove is all set to planar structure, the plane of upper end side can closely cooperate with nut, and the plane of lower end side can closely cooperate with convex edge, makes the fixing more firm of left shank of screw 4.Nut can be M4 nut.The left opening of left U-type groove can be arranged to chamfering structure.
The right-hand member of right connecting rod 3 has opening right U-type groove to the right, and two U-shaped arms of right U-type groove are that front and back are arranged, in the top cross-under of the right shank of screw 5 right U-type groove on right connecting rod 3.The top of right shank of screw 5 is provided with thread segment, and its bottom is cone-shaped structure; Convex edge is being provided with near thread segment place, top, the external diameter of convex edge is greater than the groove width of right U-type groove, the top of right shank of screw 5 can be made during cross-under to penetrate from the bottom to top or from right to left in right U-type groove, and the convex edge end face on right shank of screw 5 is contacted with the lower end side of right U-type groove, then adopt the nut matched with right shank of screw 5 top thread segment to be fastened on right connecting rod 3 by right shank of screw 5.Certainly, the external diameter of the nut matched with right shank of screw 5 top thread segment should be greater than the groove width of right U-type groove.In this utility model, the upper/lower terminal side of right U-type groove is all set to planar structure, the plane of upper end side can closely cooperate with nut, and the plane of lower end side can closely cooperate with convex edge, makes the fixing more firm of right shank of screw 5.Nut can be M4 nut.
In the present embodiment, the hypomere of left shank of screw 4 and right shank of screw 5 is polished rod structure, and the hypomere that can arrange left shank of screw 4 and right shank of screw 5 in other embodiments is helicitic texture.
This utility model structure is simple, practical, easy and simple to handle.During embody rule, first by left shank of screw 4(or right shank of screw 5) followed closely in one end of fracture by drill bit, regulate support to arrive suitable length by rotational sleeve 2, hammer into right shank of screw 5(or left shank of screw 4 at the fracture other end by drill bit), thus play fixation.If the position of left shank of screw 4 or right shank of screw 5 needs to adjust a little, also can unclamp respective nut, left shank of screw 4 or right shank of screw 5 are moved in corresponding U-type groove, afterwards clamp nut again.
Claims (5)
1. a controlled single arm type exterior fixation bracket, is characterized in that, comprising:
Sleeve, left end is provided with forward female thread, and right-hand member is provided with reverse female thread;
Left connecting rod, left end has opening left U-type groove left, and right-hand member is provided with the right-hand thread section matched with described sleeve left end female thread, and described left connecting rod is connected with the described forward female thread in described sleeve by described right-hand thread section;
Right connecting rod, right-hand member has opening right U-type groove to the right, and left end is provided with the left-hand thread section matched with described sleeve right-hand member female thread, and described right connecting rod is connected with the described reverse female thread in described sleeve by described left-hand thread section;
Left shank of screw, its top is provided with thread segment, and its hypomere is polished rod, is being provided with convex edge near thread segment place, top, in the top cross-under of the described left shank of screw described left U-type groove on described left connecting rod, can described left shank of screw be fastened on described left connecting rod by nut and convex edge; And
Right shank of screw, its top is provided with thread segment, and its hypomere is polished rod, is being provided with convex edge near thread segment place, top, in the top cross-under of the described right shank of screw described right U-type groove on described right connecting rod, described right shank of screw can be fastened on described right connecting rod by nut and convex edge.
2. controlled single arm type exterior fixation bracket according to claim 1, is characterized in that, the outer peripheral face of described sleeve is coarse grid surface.
3. controlled single arm type exterior fixation bracket according to claim 1, is characterized in that, the left end of described sleeve is provided with the left stroke limit ring for preventing described left connecting rod from screwing out described sleeve; The right-hand member of described sleeve is provided with the right stroke limit ring for preventing described right connecting rod from screwing out described sleeve.
4. controlled single arm type exterior fixation bracket according to claim 1, is characterized in that, described left connecting rod and described right connecting rod are respectively equipped with at least two clamping planes.
5. controlled single arm type exterior fixation bracket according to claim 1, is characterized in that, the upper/lower terminal side of described left U-type groove is planar structure; The upper/lower terminal side of described right U-type groove is planar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489479.5U CN204072289U (en) | 2014-08-28 | 2014-08-28 | Controlled single arm type exterior fixation bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489479.5U CN204072289U (en) | 2014-08-28 | 2014-08-28 | Controlled single arm type exterior fixation bracket |
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| Publication Number | Publication Date |
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| CN204072289U true CN204072289U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420489479.5U Active CN204072289U (en) | 2014-08-28 | 2014-08-28 | Controlled single arm type exterior fixation bracket |
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| CN (1) | CN204072289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840241A (en) * | 2015-06-10 | 2015-08-19 | 哈尔滨邦美医疗科技有限公司 | Micro external fixator with two dynamically-adjustable arms |
-
2014
- 2014-08-28 CN CN201420489479.5U patent/CN204072289U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840241A (en) * | 2015-06-10 | 2015-08-19 | 哈尔滨邦美医疗科技有限公司 | Micro external fixator with two dynamically-adjustable arms |
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