CN205286504U - Transverse connection device for spinal internal fixation - Google Patents
Transverse connection device for spinal internal fixation Download PDFInfo
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- CN205286504U CN205286504U CN201520958604.7U CN201520958604U CN205286504U CN 205286504 U CN205286504 U CN 205286504U CN 201520958604 U CN201520958604 U CN 201520958604U CN 205286504 U CN205286504 U CN 205286504U
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Abstract
The utility model discloses a medical instrument especially connects the transverse connection device for spinal internal fixation excellent with fixed connection for one kind. The device includes two connectors of symmetrical arrangement, every connector all one end is equipped with the coupling hook, the other end is equipped with the connecting rod, two connecting rods interconnect through the adjusting bolt that can adjust two connector distances, its structural feature still includes the eccentric wheel, tight piece in top and pin, be equipped with side direction open -ended arc wall on the coupling hook, be equipped with perforating hole and the tight groove in top on the connector, the top tight groove both ends respectively with the perforating hole, the arc wall is linked together, and it is equipped with the cotter hole groove on the lateral wall in tight groove to push up, be equipped with the cotter hole on the tight piece in top, in the perforating hole was arranged in to the eccentric wheel, the tight inslot in top was arranged in to the tight piece in top, and the pin is installed in cotter hole groove and cotter hole, and the eccentric wheel constitutes the centre gripping chamber that is used for the clamped connection stick with the tight piece in close contact with in top, the tight piece in top with the arc wall. The utility model has the advantages of simple to operate, stable in structure, length can be adjusted.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, especially a kind of internal fixation of spine cross-connecting apparatus connected with fixing pitman.
Background technology
Spinal internal fixation system includes pedicle screw, pitman and lateral connector. In operation process, pedicle screw being first screwed into vertebral body both sides, then pitman and pedicle screw are fixed, install lateral connector after the installation of both sides between two pitmans, its effect is to ensure that two pitmans are stably firm, does not shake.
As disclosed in China's utility model 201520312479.2 " a kind of adjustable lateral connector of internal fixation of spine ", one end of its first hook and the second hook is provided with C type draw-in groove, the sidewall of C type draw-in groove is provided with screwed hole, horizontal even retaining screw is threadeded with screwed hole, the end of horizontal even retaining screw is exposed in C type draw-in groove, constitute holding chamber with C type draw-in groove, be placed on the pitman clamping in C type draw-in groove. Owing to horizontal company retaining screw is conical with the position that pitman clamps mutually, the horizontal even area that retaining screw and pitman contact with each other is only small, and pitman is easy to skid off from C type draw-in groove, causes that spinal internal fixation system is not sufficiently stable firmly, even shakes and get loose.
By lateral connector be made up of two union joints and a lateral connection bar, its lateral connection rod can not regulate length, its length carries out cutting according to the distance between two pitmans, not only the cross section of cutting is irregular, and lateral connection rod two ends to expose union joint, with determine lateral connection rod length more than the distance between two union joints. Operation process is complicated, and operating time is long, and the length of lateral connection rod is wayward, too short has the danger departing from union joint, long can stimulate muscular soft tissues. Although the lateral connection rod also having can regulate length, but its structural stability is poor, not easily operates, and two union joints are susceptible to deviation, affect surgical effect.
Summary of the invention
Technical problem to be solved in the utility model is to provide the internal fixation of spine cross-connecting apparatus that a kind of easy for installation, Stability Analysis of Structures, length can regulate.
The technical scheme in the invention for solving the above technical problem is: this device includes two union joints being arranged symmetrically with, each union joint one end is provided with connection hook, the other end is provided with connecting rod, two connecting rods interconnect by adjusting the adjusting bolt of two union joint distances, it is structurally characterized in that and also includes eccentric, withstanding tight block and pin, connect hook and be provided with the arcuate groove of lateral openings, union joint is provided with through hole and holds out against groove, the two ends holding out against groove are connected with through hole, arcuate groove respectively, and the sidewall holding out against groove is provided with pin hole slot; Withstanding tight block is provided with pin hole, and eccentric is placed in through hole, and withstanding tight block is placed in and holds out against in groove, and pin is arranged in pin hole slot and pin hole, and eccentric constitutes the holding chamber for clamping pitman with withstanding tight block close contact, withstanding tight block and arcuate groove.
The position that withstanding tight block described in the utility model contacts with eccentric is the cambered surface of indent, and the position that withstanding tight block contacts with pitman is the arc surface of indent.
The end of a connecting rod described in the utility model is provided with bolt hole, and another root connecting rod is provided with chute, and the screw rod of adjusting bolt is placed in chute and threadeds with bolt hole, and the diameter of adjusting bolt screw rod is less than the width of chute.
Adjusting bolt described in the utility model is hexagon socket head cap screw.
Eccentric described in the utility model is interior hexagonal eccentric.
This utility model is compared with prior art, have the advantages that 1, this cross-connecting apparatus is provided with the through hole being connected on union joint and holds out against groove, , eccentric and withstanding tight block are respectively placed in through hole and hold out against in groove, the sidewall holding out against groove is provided with pin hole slot, withstanding tight block is provided with pin hole, pin is arranged in pin hole slot and pin hole, when rotating eccentric, eccentric promotes withstanding tight block, withstanding tight block drives pin to move in pin hole slot, until the holding chamber clamping pitman that withstanding tight block is constituted with the arcuate groove being connected on hook, and the position that clamps mutually of withstanding tight block and pitman is the arc surface of indent, withstanding tight block is big with pitman not only contact area, and adhered shape, firmly pitman can be clamped in connection hook, structure is more stable firmly, not easily rock and get loose, 2, this lateral connector is respectively provided with chute and bolt hole in two connecting rods, the diameter of the screw rod of adjusting bolt is less than the width of chute, by the screw rod of adjusting bolt mobile distance regulated between two union joints in chute, and adopt adjusting bolt to be fixed, simple in construction, easy to operate.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is axonometric chart of the present utility model.
Fig. 3 is the axonometric chart after this utility model decomposes.
Fig. 4 is sectional view of the present utility model.
Fig. 5 is use state diagram of the present utility model.
Fig. 6 is Fig. 5 state diagram after implanting human body.
Detailed description of the invention
Referring to Fig. 1 Fig. 4, the present embodiment includes two union joints 1 being arranged symmetrically with, and each union joint 1 one end is provided with connection hook 2, and the other end is provided with connecting rod 3, and two connecting rods 3 are interconnected by adjusting bolt 4, and regulating screw thread 4 is hexagon socket head cap screw; Wherein the end of a connecting rod 3 is provided with bolt hole 15, and another root connecting rod 3 is provided with chute 16, and the screw rod of adjusting bolt 4 is placed in chute 16 and threadeds with bolt hole 15, and the diameter of adjusting bolt 4 screw rod is less than the width of chute 16.So moved back and forth in chute 16 by adjusting bolt 4 screw rod, it is possible to adjust the distance between two union joints 1; After adjusting suitable distance, by tightening adjusting bolt 4, two connecting rods 3 are fixed together.
Being fitted with eccentric 5, withstanding tight block 6 and pin 7 on each union joint 1, eccentric 5 is interior hexagonal eccentric. Connecting hook 2 and be provided with the arcuate groove 8 of lateral openings, union joint 1 is provided with through hole 9 and holds out against groove 10, the two ends holding out against groove 10 are connected with through hole 9, arcuate groove 8 respectively, and the sidewall holding out against groove 10 is provided with pin hole slot 11. Withstanding tight block 6 is provided with pin hole 12, and eccentric 5 is placed in through hole 9, and withstanding tight block 6 is placed in and holds out against in groove 10, and pin 7 is arranged in pin hole 12 after pin hole slot 11. Eccentric 5 and withstanding tight block 6 are in close contact, and the position that contacts with eccentric 5 of withstanding tight block 6 is the cambered surface 18 of indent. The position that withstanding tight block 6 contacts with pitman 13 is the arc surface 19 of indent, and withstanding tight block 6 and arcuate groove 8 constitute the holding chamber 14 for clamping pitman 13.
Referring to Fig. 5 and Fig. 6, this lateral connector and pitman 13, pedicle screw 17 form spinal internal fixation system. During use, first unclamp adjusting bolt 4, make the distance between two connection hooks 2 to adjust; After implanting, regulate the distance between two connection hooks 2 according to actual needs, two connection hooks 2 are caught on a pitman 13 respectively; Then eccentric 5 is rotated with inner hexagon spanner, withstanding tight block 6 is promoted to move to arcuate groove 8 direction holding out against in groove 10 when eccentric 5 rotates, withstanding tight block 6 promotes pin 7 to move to arcuate groove 8 direction in pin hole slot 11 simultaneously, after the holding chamber 14 of withstanding tight block 6 and arcuate groove 8 composition clamps pitman 13, stop operating eccentric 5. Finally tighten adjusting bolt 4, the distance between two connection hooks 2 is fixed.
Claims (5)
1. an internal fixation of spine cross-connecting apparatus, including two union joints (1) being arranged symmetrically with, each union joint (1) one end is provided with connection hook (2), the other end is provided with connecting rod (3), two connecting rods (3) interconnect by adjusting the adjusting bolt (4) of two union joint (1) distances, it is characterized in that: also include eccentric (5), withstanding tight block (6) and pin (7), connect hook (2) and be provided with the arcuate groove (8) of lateral openings, union joint (1) is provided with through hole (9) and holds out against groove (10), hold out against the two ends of groove (10) respectively with through hole (9), arcuate groove (8) is connected, and the sidewall holding out against groove (10) is provided with pin hole slot (11), withstanding tight block (6) is provided with pin hole (12), eccentric (5) is placed in through hole (9), withstanding tight block (6) is placed in and holds out against in groove (10), pin (7) is arranged in pin hole slot (11) and pin hole (12), eccentric (5) and withstanding tight block (6) close contact, withstanding tight block (6) is used for clamping the holding chamber (14) of pitman (13) with arcuate groove (8) composition.
2. internal fixation of spine cross-connecting apparatus according to claim 1, it is characterized in that: the position that described withstanding tight block (6) contacts with eccentric (5) is the cambered surface (18) of indent, the position that withstanding tight block (6) contacts with pitman (13) is the arc surface (19) of indent.
3. internal fixation of spine cross-connecting apparatus according to claim 1, it is characterized in that: the end of a described connecting rod (3) is provided with bolt hole (15), another root connecting rod (3) is provided with chute (16), the screw rod of adjusting bolt (4) is placed in chute (16) and threadeds with bolt hole (15), and the diameter of adjusting bolt (4) screw rod is less than the width of chute (16).
4. internal fixation of spine cross-connecting apparatus according to claim 1, is characterized in that: described adjusting bolt (4) is hexagon socket head cap screw.
5. internal fixation of spine cross-connecting apparatus according to claim 1, is characterized in that: described eccentric (5) is interior hexagonal eccentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958604.7U CN205286504U (en) | 2015-11-27 | 2015-11-27 | Transverse connection device for spinal internal fixation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958604.7U CN205286504U (en) | 2015-11-27 | 2015-11-27 | Transverse connection device for spinal internal fixation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205286504U true CN205286504U (en) | 2016-06-08 |
Family
ID=56462606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520958604.7U Active CN205286504U (en) | 2015-11-27 | 2015-11-27 | Transverse connection device for spinal internal fixation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205286504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496532A (en) * | 2015-11-27 | 2016-04-20 | 周建明 | Transverse connecting device for internal fixation of spines |
-
2015
- 2015-11-27 CN CN201520958604.7U patent/CN205286504U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496532A (en) * | 2015-11-27 | 2016-04-20 | 周建明 | Transverse connecting device for internal fixation of spines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180813 Address after: 324113 No. 20 Huiyuan Road, Shanhai cooperation area, Jiangshan Economic Development Zone, Quzhou, Zhejiang Patentee after: Zhejiang Kangci Medical Technology Co., Ltd. Address before: 324113 No. 20 Huiyuan Road, Shanhai cooperation area, Jiangshan Economic Development Zone, Quzhou, Zhejiang Patentee before: Zhou Jianming |
|
| TR01 | Transfer of patent right |