CN204931823U - Single bridge Combined basin bone inner fixing device - Google Patents
Single bridge Combined basin bone inner fixing device Download PDFInfo
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- CN204931823U CN204931823U CN201520348088.6U CN201520348088U CN204931823U CN 204931823 U CN204931823 U CN 204931823U CN 201520348088 U CN201520348088 U CN 201520348088U CN 204931823 U CN204931823 U CN 204931823U
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Abstract
The utility model discloses a kind of single bridge Combined basin bone inner fixing device, mainly comprise connecting rod, contiguous block, special-shaped block and hold-down screw.Connecting rod one end is with special-shaped head (1), and the other end is threaded effectively with special-shaped block (6), and is undertaken locking by locking screw thread hole and locking compress hole and pressurize fixing.The through hole that contiguous block (3,4,5) is inner and connecting rod shaft (2) are slidably matched.Forcing screw (8) or lock screw (7) match with locking compress hole or screw hole, are lock onto on connecting rod, by contiguous block effective location by the connectivity slot outside contiguous block.This utility model has that structure is simple firm, simple operation flexible, and have significant reset and fixed effect to instability mode os pelvicum fracture, the generation that can effectively prevent Secondary cases to be shifted, is conducive to growth and the healing at os pelvicum fracture place.
Description
Technical field
This utility model relates to a kind of os pelvicum fracture inner fixing device, belongs to orthopedic fixer tool technical field.It is single bridge combination type inner fixing device of a treatment multiple os pelvicum fracture state.
Background technology
Fracture of pelvis mostly is caused by powerful external force.Be on the increase by the labile patients with pelvis fracture that vehicle accident and high falling wound etc. are caused in the last few years.Unstable Pelvic Fracture reattachment surgery is the treatment means that a kind of wound is large, technical requirement is high, still needs to be updated and perfect.Os pelvicum fracture traditionally more adopts Bone traction on condyle of femur, holder geneva frame expopexy, pegboard systems, but all there is certain defect.Wherein, exterior fixation bracket is the important means of unstable fracture of pelvis early treatment, but its holding property is not good enough, without pressurization, have the possibility of generation secondary displacement.In plate nail system, the moulding of steel plate is difficult to the irregular form adapting to each position of pelvis, and can extend operating time and difficulty, screw fixed-direction is single, reduces the motility of system.Therefore, in order to overcome the deficiency of traditional means, avoid the defect that existing internal fixation system exists, carry out innovation and reform, developed a kind of novel single bridge basin bone internal fixtion combination unit, each bone of pelvis is mainly spongy bone, in flat state, single bridge system possesses feature that is better moulding and that conveniently insert to irregular bone, and system structure is flexible, handled easily.Therefore, to the reset of instability mode os pelvicum fracture and the good effect of fixing tool.
Summary of the invention
The purpose of this utility model overcomes the unreasonable part to os pelvicum fracture reduction means in prior art, provides a kind of flexible, polymorphic single bridge Combined basin bone inner fixing device possessing again locking and pressurizing function.This single bridge Combined basin bone inner fixing device reasonable in design, compact changeable, design feature are obvious, are widely used in os pelvicum fracture, recover pelvic ring stability.
This utility model adopts following scheme to realize:
(1) single bridge Combined basin bone inner fixing device is made up of connecting rod, contiguous block, special-shaped block, cancellous bone screw and lock screw.Be connected by screw thread with special-shaped block by the connecting rod carrying special-shaped head, connecting rod shaft is equipped with contiguous block.
(2) the special-shaped head of connecting rod and special-shaped block all have screw hole and locking compress hole; The compression aspect in locking compress hole all in.
(3) shaft of connecting rod is designed to round bar shape or hedysarum scoparium shape, can carry out random-shaping according to os pelvicum fracture situation to it.Head one end of connecting rod is special-shaped head, and the other end is external screw thread.
(4) special-shaped block is connected by screw thread with the shaft of connecting rod, and the length of connecting thread is 1.5-2.0cm.
(5) contiguous block has half hook, single-orifice type or heteropleural diapsid structure.
(6) hold-down screw is cancellous bone screw and lock screw, and the pitch of cancellous bone screw is 1.5-2 times of lock screw; The bar portion pitch of lock screw is 2-3 times of lock part pitch.
The design of clavate shaft increases the elasticity of single bridge system, makes stress distribution even, can be moulding to it according to the form at fracture of pelvis place, simple to operate, convenient, greatly reduces the time that operation exposes with wound; Two ends are wedge structure and carry locking compress hole, be convenient to carry out overall fixing again after first accurately being located one end of single bridge system in operation, increase accuracy and the operability of reattachment surgery, recover the anatomical structure of pelvis to greatest extent, it can prevent again contiguous block in fracture healing process from coming off.Contiguous block arbitrarily can slide and rotate on connecting rod, can do any adjustment, also the two can be combinationally used, enhance the motility of operation according to os pelvicum fracture state to its quantity, installation site and angle.This single bridge system can be furnished with polytype screw, wherein lock screw and hold-down screw play locking and pressurization, the design of spongy bone lock screw is then more excellent for pelvis spongy bone fixed effect everywhere, make it compression to reset, fixing reliable, avoid patient in rehabilitation, there is the possibility of screw slippage.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail.
Fig. 1 is single bridge Combined basin bone inner fixing device example 1 front view.
Fig. 2 is Fig. 1 connecting rod front view.
Fig. 3 is that the A-A of Fig. 2 is to sectional view.
Fig. 4 is single-orifice type contiguous block front view in Fig. 1.
Fig. 5 is single-orifice type contiguous block right view in Fig. 1.
Fig. 6 is heteropleural diapsid contiguous block front view in Fig. 1.
Fig. 7 is that the B-B of Fig. 6 is to sectional view.
Fig. 8 is half hook contiguous block front view in Fig. 1.
Fig. 9 is that the C-C of Fig. 8 is to sectional view.
Figure 10 is special-shaped block front view in Fig. 1.
Figure 11 is cancellous bone screw front view in Fig. 1.
Figure 12 is the left view of Figure 11.
Figure 13 is the front view of lock screw in Fig. 1.
Figure 14 is the left view of Figure 13.
Detailed description of the invention:
As Fig. 1-14, single bridge Combined basin bone inner fixing device is made up of connecting rod, contiguous block, special-shaped block and hold-down screw.Wherein, one end of connecting rod is that abnormity 1 is with screw hole 1-1 and locking compress hole 1-2; The shaft 2 of connecting rod is round bar shape, and there is external screw thread 2-1 end.Contiguous block is designed to various ways, and 3 is single-orifice type contiguous block, and 4 is heteropleural diplopore contiguous block, and 5 is half hook contiguous block; Their common ground is that inside is provided with and can carries out with connecting rod shaft through hole 3-1,4-1,5-1 of being slidably matched, and its outer primary flat is provided with screwed hole 3-2,4-2,5-2, and the side of fixed block has connectivity slot 3-3,4-3 simultaneously; Special-shaped block 6 has female thread 6-1 and is connected with the external screw thread 2-1 being connected shaft, is threaded solid and reliablely to prevent the de-or distortion of special-shaped block landing.
Single bridge Combined basin bone inner fixing device adopts the connecting rod carrying special-shaped head to coordinate with special-shaped block, can greatly reduce operating process or patient recover therebetween contiguous block from the risk of slippage connecting rod; Be provided with screw hole and locking and pressurizing hole simultaneously, medical worker can according to the concrete condition choice for use cancellous bone screw of patient or lock screw in operation process, if desired basin bone is pressurizeed to the inside, can select the bottom outlet pressurizeed on hole, the cancellous bone screw implanting domed lower surface pressurizes; Pressurizeing in connecting rod inward at both ends portion, forms axial force, be beneficial in basin bone rehabilitation course, connects shaft and still remain intact moulding, prevent Secondary cases displacement.After the reduction of the fracture, select the connecting rod of appropriate size carry out effectively moulding according to basin Bones morphology and determine that bar is long, then the contiguous block of suitable quantity is passed connecting rod, fixing special-shaped block.The installation site of contiguous block and direction, according to the practical situation determination optimum selection of patient, are selected suitable screw and tighten, and complete the fixing of fracture.
Claims (6)
1. a single bridge Combined basin bone inner fixing device, comprise connecting rod, contiguous block, special-shaped block and hold-down screw, it is characterized in that: be connected by screw thread with special-shaped block by the connecting rod carrying special-shaped head, connecting rod shaft is equipped with contiguous block.
2. a kind of single bridge Combined basin bone inner fixing device as claimed in claim 1, is characterized in that: described special-shaped head and special-shaped block all have screw hole and locking compress hole; The compression aspect in locking compress hole all in.
3. a kind of single bridge Combined basin bone inner fixing device as claimed in claim 1, is characterized in that: described connecting rod shaft is round bar shape or hedysarum scoparium shape, and one end is special-shaped head, and the other end is external screw thread.
4. the one list bridge Combined basin bone inner fixing device as described in claim 1 or 3, it is characterized in that: described special-shaped block is connected by screw thread with connecting rod shaft, the length of connecting thread is 1.5-2.0cm.
5. a kind of single bridge Combined basin bone inner fixing device as claimed in claim 1, is characterized in that: described contiguous block has half hook, single-orifice type or heteropleural diapsid structure.
6. a kind of single bridge Combined basin bone inner fixing device as claimed in claim 1, is characterized in that: described hold-down screw is cancellous bone screw and lock screw, and the pitch of cancellous bone screw is 1.5-2 times of lock screw; The bar portion pitch of lock screw is 2-3 times of lock part pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348088.6U CN204931823U (en) | 2015-05-26 | 2015-05-26 | Single bridge Combined basin bone inner fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348088.6U CN204931823U (en) | 2015-05-26 | 2015-05-26 | Single bridge Combined basin bone inner fixing device |
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| Publication Number | Publication Date |
|---|---|
| CN204931823U true CN204931823U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520348088.6U Active CN204931823U (en) | 2015-05-26 | 2015-05-26 | Single bridge Combined basin bone inner fixing device |
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| CN (1) | CN204931823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510822A (en) * | 2016-10-18 | 2017-03-22 | 熊鹰 | Combined drifting minimally-invasive internal fixation device for pelvis |
| CN109893230A (en) * | 2019-02-26 | 2019-06-18 | 苏州伯塔医疗科技有限公司 | Minimally invasive shaping hold-down bars outside a kind of marrow |
-
2015
- 2015-05-26 CN CN201520348088.6U patent/CN204931823U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510822A (en) * | 2016-10-18 | 2017-03-22 | 熊鹰 | Combined drifting minimally-invasive internal fixation device for pelvis |
| CN106510822B (en) * | 2016-10-18 | 2023-08-01 | 熊鹰 | Combined pelvis drift minimally invasive internal fixing device |
| CN109893230A (en) * | 2019-02-26 | 2019-06-18 | 苏州伯塔医疗科技有限公司 | Minimally invasive shaping hold-down bars outside a kind of marrow |
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| GR01 | Patent grant |