CN2540918Y - Reveral screw backbone internal fixer - Google Patents
Reveral screw backbone internal fixer Download PDFInfo
- Publication number
- CN2540918Y CN2540918Y CN 02234935 CN02234935U CN2540918Y CN 2540918 Y CN2540918 Y CN 2540918Y CN 02234935 CN02234935 CN 02234935 CN 02234935 U CN02234935 U CN 02234935U CN 2540918 Y CN2540918 Y CN 2540918Y
- Authority
- CN
- China
- Prior art keywords
- screw
- adapter sleeve
- ball screw
- spherical surface
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012856 packing Methods 0.000 claims description 23
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000007943 implant Substances 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to a deflecting screw fixer disposed in the backbone, characterized in that the utility model is composed of a screw with a ball shaped head, a connecting sleeve, an inner screw bolt, an outer screw nut, a hinge gasket and a connecting bar. The ball shaped head of the screw is disposed at a rotating support end of an inner spherical surface in the connecting sleeve, a screw thread section of the screw with the ball shaped head penetrates outwards the support end of the inner spherical surface of the connecting sleeve, and the hinge gasket is arranged in the connecting sleeve, the ball shaped head of the screw is contained and pressed by an end surface of an inner spherical surface of the hinge gasket, the other end is a semi-cylindrical groove for inserting the connecting bar, the inner screw bolt presses the screw with the ball shaped head to fix the angle deflection positions of the screw with the ball shaped head via the connecting bar and the hinge gasket, and the connecting bar is further pressed and locked after the outer screw nut is screwed. The operation of the deflecting screw fixer disposed in the backbone is simple and convenient, the embedded angle range of the screw is large and the fixing is reliable.
Description
Technical field
This utility model relates to a kind of Turning screw spinal internal fixator.
Technical background
Injured or odd-shaped human body spinal column is implemented to reset with operation process such as rectifications in, the screw of spinal column internal fixation device and the angle between the pitman and mutual alignment will constantly change with the process of performing the operation.In the past have fixed axis to screw in use doctor's operation is made troubles and also influences simultaneously final result of use, but also there are some kinds of spinal column internal fixation devices to use the break-in screw, but owing to the reason of junction structural design makes that volume is bigger than normal or postoperative is easily loosening, its effect is still not ideal enough.
Summary of the invention
The purpose of this utility model is to provide a kind of spinal column internal fixation device for overcoming above-mentioned defective, the ball screw of this spinal column internal fixation device in operation and the angle between adapter sleeve and the pitman can be with adjusting in being intended in a big way, adopt in the time of fixedly inner bolt, outer nut simultaneously pressing mode make the connecting portion volume significantly reduce but fastening force obviously increases, can prevent the generation that postoperative is loosening effectively.
The technical scheme that realizes above-mentioned purpose is, this utility model Turning screw spinal internal fixator is by ball screw, adapter sleeve, inner bolt, outer nut, hinged packing ring and pitman are formed, the threaded portion of ball screw passes adapter sleeve, its ballhead then closely cooperates with Internal Spherical Surface pivoting support end in adapter sleeve, hinged packing ring pack into so that the recessed Internal Spherical Surface end face of hinged packing ring at the opposite side of ballhead, the common globular hinge slew gear of forming of ballhead and adapter sleeve Internal Spherical Surface pivoting support end, the hinged packing ring other end is that semi-cylindrical groove and the adapter sleeve other end have a U type groove in order to embed pitman, after screwing in the adapter sleeve, inner bolt can exert pressure then pressure through pitman to pitman, hinged packing ring is passed to ball screw and ballhead and adapter sleeve Internal Spherical Surface pivoting support end is compressed, and outer nut then screws into pitman is exerted pressure and pitman and adapter sleeve are closely fixed along adapter sleeve.
This utility model compared with prior art, the connecting portion compact conformation, volume is less, screw implant angle adjustable extent is big, and is easy and simple to handle, fixation is reliable.
Description of drawings
Fig. 1 is this utility model embodiment sketch map.
Fig. 2 is this utility model embodiment part sketch map.
Fig. 3 is this utility model assembling sketch map.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further details.
As Fig. 1, Fig. 2, shown in Figure 3, this utility model Turning screw spinal internal fixator is made up of ball screw (1), adapter sleeve (2), inner bolt (3), outer nut (4), hinged packing ring (5) and pitman (6).As Fig. 2, shown in Figure 3, adapter sleeve (2) is a hollow sleeve, its diameter of bore is slightly larger than the ballhead diameter of ball screw (1), the two ends function of adapter sleeve (2) is different with structure, wherein an end is an Internal Spherical Surface pivoting support end, the outlet diameter of this end is less than the ballhead diameter of ball screw (1) but greater than its major diameter of thread, the inboard of Internal Spherical Surface pivoting support end is an Internal Spherical Surface pivoting support structure, the ballhead diameter of this Internal Spherical Surface diameter and ball screw (1) is complementary, the other end of adapter sleeve (2) is the fastening end, the fastening end is provided with female thread can distinguish corresponding screw-in inner bolt (3) and outer nut (4) with external screw thread, also has a U type groove for embedding pitman (6) in the fastening end along axis direction.Hinged packing ring (5) diameter is slightly less than adapter sleeve (2) diameter of bore, hinged packing ring (5) one ends are recessed Internal Spherical Surface structure, the ballhead diameter of its Internal Spherical Surface diameter and ball screw (1) is complementary, the other end of hinged packing ring (5) has a semi-cylindrical groove so that pitman (6) embeds, and hinged packing ring (5) also is provided with a central through hole and can passes smoothly for screwing used screw driver of ball screw (1) or spanner.As Fig. 1, shown in Figure 3, this utility model Turning screw spinal internal fixator at first penetrates the fastening end of ball screw (1) by adapter sleeve (2) when assembling, the threaded portion of ball screw (1) is passed in order to being implanted into to skeleton by the Internal Spherical Surface pivoting support end of adapter sleeve (2), the ballhead of ball screw (1) then be trapped in the adapter sleeve (2) and with the Internal Spherical Surface of adapter sleeve (2) Internal Spherical Surface pivoting support end closely contact form one can rotating mechanical motion pair, the adapter sleeve (2) of then hinged packing ring (5) being packed into, the endosphere type end side of hinged packing ring (5) is pushed down the ballhead of ball screw (1).At first pass hinged packing ring (5) with in ball screw (1) implantable bone during clinical use with screw driver or spanner, pitman (6) is embedded and is pressed in the semi-cylindrical groove of hinged packing ring (5) from adapter sleeve (2) fastening end U type groove, then inner bolt (3) is screwed in along inner bolt from adapter sleeve (2) fastening end, treat the angle between adapter sleeve (2) and the ball screw (1) is mixed up and inner bolt (3) can be screwed, pitman this moment (6) passes to hinged packing ring (5) so that the ballhead of ball screw (1) is fixed with the pressure of inner bolt (3).The effect of outer nut (4) is banding adapter sleeve (2) U type channel opening place and further compresses pitman (6) from the outside and make its firm stable more.
Claims (5)
1. Turning screw spinal internal fixator, it is characterized in that it is by ball screw (1), adapter sleeve (2), inner bolt (3), outer nut (4), hinged packing ring (5) and pitman (6) are formed, the ballhead of ball screw (1) places the Internal Spherical Surface pivoting support end in the adapter sleeve (2), it is outer to be used in the implantable bone that the threaded portion of ball screw (1) passes adapter sleeve (2) Internal Spherical Surface pivoting support end end face, hinged packing ring (5) is housed in adapter sleeve (2), the U type groove of adapter sleeve (2) is embedded in pitman (6), inner bolt (3) screws in and compresses pitman (6) along the female thread of adapter sleeve (2) fastening end, pitman (6) is passed to the ballhead of ball screw (1) so that ball screw (1) is fixed and kept its implant angle with the pressure of inner bolt (3) through hinged packing ring (5), and outer nut (4) is further exerted pressure so that it is more firm to pitman (6) along screwing in banding adapter sleeve (2) U type channel opening place of adapter sleeve (2) fastening end.
2. Turning screw spinal internal fixator according to claim 1, the head of screw that it is characterized in that ball screw (1) is a spherical structure, its land portions is greater than hemisphere.
3. Turning screw spinal internal fixator according to claim 1, it is characterized in that adapter sleeve (2) is a hollow sleeve, its diameter of bore is slightly larger than the ballhead diameter of ball screw (1), the two ends function of adapter sleeve (2) is different with structure, wherein an end is an Internal Spherical Surface pivoting support end, the outlet diameter of this end is less than the ballhead diameter of ball screw (1) but greater than its major diameter of thread, the inboard of Internal Spherical Surface pivoting support end is an Internal Spherical Surface supporting structure, the ballhead diameter of this Internal Spherical Surface diameter and ball screw (1) is complementary, the other end of adapter sleeve (2) is the fastening end, the fastening end is provided with female thread can distinguish corresponding screw-in inner bolt (3) and outer nut (4) with external screw thread, also has a U type groove for the usefulness that embeds pitman (6) in the fastening end along axis direction.
4. Turning screw spinal internal fixator according to claim 1, it is characterized in that hinged packing ring (5) one ends are recessed Internal Spherical Surface structure, the ballhead diameter of its Internal Spherical Surface diameter and ball screw (1) is complementary, the other end of hinged packing ring (5) is a semi-cylindrical groove structure, this semi-cylindrical groove can match with pitman (6), and hinged packing ring (5) also is provided with a central through hole and can passes smoothly for screwing used screw driver of ball screw (1) or spanner.
5. Turning screw spinal internal fixator according to claim 1, it is characterized in that after ball screw (1), adapter sleeve (2) and hinged packing ring (5) fit together the Internal Spherical Surface pivoting support end of the ballhead of ball screw (1), adapter sleeve (2) and the recessed Internal Spherical Surface end face of hinged packing ring (5) are combined into a globular hinge slew gear has enough implant angle excursions to guarantee ball screw (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02234935 CN2540918Y (en) | 2002-05-28 | 2002-05-28 | Reveral screw backbone internal fixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02234935 CN2540918Y (en) | 2002-05-28 | 2002-05-28 | Reveral screw backbone internal fixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2540918Y true CN2540918Y (en) | 2003-03-26 |
Family
ID=33709591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02234935 Expired - Lifetime CN2540918Y (en) | 2002-05-28 | 2002-05-28 | Reveral screw backbone internal fixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2540918Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783885A (en) * | 2015-05-06 | 2015-07-22 | 山东威高骨科材料股份有限公司 | Lower screw assembly type universal screw |
| CN107137138A (en) * | 2017-06-01 | 2017-09-08 | 成都贝施美生物科技有限公司 | A kind of spinal joint inner fixing device |
| CN110279441A (en) * | 2019-06-11 | 2019-09-27 | 中国人民解放军总医院 | A kind of logical channel fixing device of minimally invasive spine surgical |
-
2002
- 2002-05-28 CN CN 02234935 patent/CN2540918Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783885A (en) * | 2015-05-06 | 2015-07-22 | 山东威高骨科材料股份有限公司 | Lower screw assembly type universal screw |
| CN107137138A (en) * | 2017-06-01 | 2017-09-08 | 成都贝施美生物科技有限公司 | A kind of spinal joint inner fixing device |
| CN110279441A (en) * | 2019-06-11 | 2019-09-27 | 中国人民解放军总医院 | A kind of logical channel fixing device of minimally invasive spine surgical |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: 3/F, ZHU HOUSE, YARD 15, ZUOJIAZHUANG, CHAOYANG DI Free format text: FORMER NAME OR ADDRESS: 5/F, HONG HOUSE, YARD 15, ZUOJIAZHUANG, CHAOYANG DISTRICT, BEIJING CITY |
|
| CP03 | Change of name, title or address |
Patentee address after: Building 15, main building, No. three, left hospital, Beijing, Chaoyang District Patentee address before: Floor five, Red Mansion, No. 15, left hospital, Chaoyang District, Beijing |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Tianxinfu Medical Equipment Co.,Ltd. Assignor: Yu Haiying Contract fulfillment period: 2008.12.8 to 2015.12.8 Contract record no.: 2008110000186 Denomination of utility model: Intravertebral immobilizer with anti-expansion direction-changing screw Granted publication date: 20030326 License type: Exclusive license Record date: 20081210 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.8 TO 2015.12.8; CHANGE OF CONTRACT Name of requester: BEIJING TIANXINFU MEDICAL TREATMENT EQUIPMENT CO., Effective date: 20081210 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120528 Granted publication date: 20030326 |
|
| DD01 | Delivery of document by public notice |
Addressee: Yu Haiying Document name: Notification of Expiration of Patent Right Duration |