CN205181460U - U type pedicle of vertebral arch nail - Google Patents
U type pedicle of vertebral arch nail Download PDFInfo
- Publication number
- CN205181460U CN205181460U CN201520871734.7U CN201520871734U CN205181460U CN 205181460 U CN205181460 U CN 205181460U CN 201520871734 U CN201520871734 U CN 201520871734U CN 205181460 U CN205181460 U CN 205181460U
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- CN
- China
- Prior art keywords
- nail
- screw
- rod
- type groove
- lock nut
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- 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.)
- Withdrawn - After Issue
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- 241001079814 Symphyotrichum pilosum Species 0.000 claims description 30
- 235000004224 Typha angustifolia Nutrition 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 7
- 241000282472 Canis lupus familiaris Species 0.000 description 10
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to a U type pedicle of vertebral arch nail, including staple, lock nut, locking piece and nail stick, staple is equipped with screw portion, and screw portion upper end is equipped with follows closely the seat, nail seat side is equipped with the U type groove of lining up, and U type groove upper end is equipped with the internal thread, and the lower extreme is equipped with the horizontal open slot that link up respectively on its both sides wall, the lock nut be equipped with with interior screw -thread fit's external screw thread, and revolve in in the internal thread, be equipped with tooling hole on the lock nut, locking piece active link in the lower extreme of lock nut, the merge is put into extremely from U type groove to nail stick in the horizontal open slot, its characterized in that: the inclined plane into uncovered form is established to a side or the both sides face of horizontal open slot to become two line contacts with the nail clavate, be used for to living the nail stick, the lower extreme of locking piece is equipped with the lock body, the horizontal both ends of lock body are equipped with two voussoirs respectively, will by the lock nut two voussoirs of lock body are impressed and are followed closely the space in stick and U type groove, will follow closely excellent wedging.
Description
Technical field
This utility model relates to orthopedic medical device field, especially a kind of U-shaped pedicle nail.
Background technology
Minimally Invasive Surgery is widely used in recent years, and the Wicresoft's application of U-shaped pedicle nail in spinal operation also gets more and more, and is applicable to the diseases such as treatment thoracic and lumbar vertebral posterior short segment wound, tumor and unstable spine.The U-shaped pedicle nail of current Wicresoft, primarily of U-shaped nail, locking jackscrew and nail rod composition.The locking mode of its nail rod, by the screw-internal thread fit on the U-shaped nail seat two side of jackscrew and U-shaped nail and pressing pin is excellent, when coupling mechanism force is larger, exist nail seat two side softened or support distortion defect, thus cause the possibility that nail rod loosens or exits, and, postoperative time return period is longer, during this, human body needs activity, pedicle nail can be made to send out the long fine motion of dirt, thus simple jackscrew directly compresses mode, also there is the possibility loosening and even move back rod, and structural volume is comparatively large, is unfavorable for stitching and the treatment of otch.
Summary of the invention
The utility model discloses a kind of U-shaped pedicle nail, overcome above-mentioned defect, it mainly comprises U-shaped nail, lock nut, lock dog and nail rod, described U-shaped nail is provided with screw division, described screw division upper end is provided with nail seat, described nail seat side is provided with through U-type groove, described U-type groove upper end is provided with female thread, lower end is respectively equipped with transverse opening groove on its two side, described transverse opening groove with described nail seat axis for axle, by the mouth of described U-type groove both sides, rotating Vortex forms, described lock nut is provided with the external screw thread with described screw-internal thread fit, and be threaded onto in described female thread, described lock nut upper end is provided with tooling hole, in order to connect external tool and to rotate described lock nut, described lock dog active link is in the lower end of described lock nut, described nail rod is put into from U-type groove and goes to described transverse opening groove, it is characterized in that: a side of described transverse opening groove or two sides are set to the inclined-plane towards the uncovered shape of U-type groove, and become two linear contact lay with nail clavate, for propping up described nail rod, and make the small semicircle of described nail rod be in U-type groove, the lower end of described lock dog is provided with lock body, described lock body transverse ends is respectively equipped with voussoir, by lock nut, two voussoirs of described lock body are pressed between nail rod and U-type groove sidewall, by excellent for described nail wedging.Described voussoir and the described face of following closely rod and contacting, be set to described nail seat axis for axle, the face of downward spiralization, make it remain linear contact lay excellent with described nail.The upper end of described lock body is provided with screw rod, the optical axis portion being less than footpath at the bottom of screw flight is provided with between described screw rod and described lock body, the lower end of described lock nut is provided with the screwed hole coordinated with described screw rod, cavity is provided with between this screwed hole upper end and described tooling hole, described screw rod is threaded through described screwed hole and is placed in described cavity, simultaneously described screwed hole is placed in described optical axis portion, and the screw thread arranging the screwed hole of described lock nut to contrary, prevents lock dog from freely deviating from during for rotating lock nut with described external thread rotary.
A kind of U-shaped pedicle nail of this utility model, structure is simple, easy to operate, have employed screw press and coordinate wedge shape lock mode, there is larger coupling mechanism force and locking power, therefore, enhance steadiness and the safety of spinal operation, thus effectively can improve the success rate of operation.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of a kind of U-shaped the first embodiment of pedicle nail of this utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the cross-sectional schematic of lock nut in Fig. 1;
Fig. 4 is the schematic diagram of lock dog in Fig. 1.
Fig. 5 is the upward view of Fig. 4;
Fig. 6 is the schematic diagram of a kind of U-shaped pedicle nail the second embodiment of this utility model;
In accompanying drawing: 1,5U sprig, 2 lock nuts, 3 lock dogs, 4 nail rods, 6 lock-screws, 1-1,5-1 transverse opening groove, 1-2 inclined-plane, 2-1 screwed hole, 2-2 cavity, 3-1 lock body, 3-2 screw rod, 3-3 optical axis portion, 3-4 voussoir, 5-2 suspended wall, the 6-1 conical surface.
Embodiment:
Fig. 1 to Fig. 5 shows the first embodiment of a kind of U-shaped pedicle nail of this utility model.
The utility model discloses the U-shaped pedicle nail of a kind of self-locking, overcome above-mentioned defect, it mainly comprises U-shaped nail 1, lock nut 2, lock dog 3 and nail rod 4, described U-shaped nail 1 is provided with screw division, described screw division upper end is provided with nail seat, described nail seat side is provided with through U-type groove, described U-type groove upper end is provided with female thread, lower end is respectively equipped with transverse opening groove 1-1 on its two side, described transverse opening groove 1-1 with described nail seat axis for axle, by the mouth of described U-type groove both sides, rotating Vortex forms, described lock nut 2 is provided with the external screw thread with described screw-internal thread fit, and be threaded onto in described female thread, described lock nut 2 upper end is provided with tooling hole, in order to connect external tool and to rotate described lock nut 2, described lock dog 3 active link is in the lower end of described lock nut 2, described nail rod 4 is put into from U-type groove and goes to described transverse opening groove 1-1, it is characterized in that: a side of described transverse opening groove 1-1 or two sides are set to the inclined-plane 1-2 towards the uncovered shape of U-type groove, and become two linear contact lay with nail clavate, for propping up described nail rod 4, and make the small semicircle of described nail rod 4 be in U-type groove, the lower end of described lock dog is provided with lock body 3-1, described lock body 3-1 transverse ends is respectively equipped with voussoir 3-4, by lock nut 2, the two voussoir 3-4 of described lock body 3-1 are pressed between nail rod and U-type groove sidewall simultaneously, by the locking of described nail rod 4.Described voussoir 3-4 and the described face of following closely rod 4 and contacting, be set to described nail seat axis for axle, the face of downward spiralization, make it remain linear contact lay excellent with described nail.The upper end of described lock body 3-1 is provided with screw rod 3-2, the optical axis portion 3-3 being less than the screw rod 3-2 core diameter of thread is provided with between described screw rod 3-2 and described lock body 3-1, the lower end of described lock nut 2 is provided with the screwed hole 2-1 coordinated with described screw rod 3-2, cavity 2-2 is provided with between this screwed hole 2-1 upper end and described tooling hole, described screw rod 3-2 is threaded through screwed hole 2-1 and is placed in described cavity 2-2, described screwed hole 2-1 is placed in described optical axis portion 3-3 simultaneously, the screw thread arranging described screwed hole 2-1 to contrary, prevents lock dog 3 free dropping with described external thread rotary during for rotating lock nut 2.
Fig. 6 shows the second embodiment of a kind of U-shaped pedicle nail of this utility model.
The second embodiment of a kind of U-shaped pedicle nail of this utility model, mainly comprise U-shaped nail 5 and nail rod 4, described U-shaped nail 5 lower end is provided with screw division, the upper end of described screw division is provided with nail seat, described nail seat side is provided with through U-type groove, described U-type groove two side is respectively equipped with transverse opening groove 5-1, and with described nail seat axis for axle rotating Vortex by the mouth of U-type groove both sides forms, the upper end of described transverse opening groove 5-1 and described nail seat forms two suspended wall 5-2, it is characterized in that: a kind of U-shaped pedicle nail also comprises lock-screw 6, one side of described transverse opening groove 5-1 or two sides are set to the inclined-plane towards the uncovered shape of U-type groove, and become two linear contact lay with nail clavate, or the shape of described transverse opening groove 5-1 bottom land and described rod of following closely 4 closely cooperate, for propping up described nail rod 4, on two suspended wall 5-2, the outside of described nail rod 4 arranges the screw hole of up/down perforation suspended wall 5-2 respectively, the downside of described transverse opening groove 5-1 is respectively equipped with the hole coaxial with described screw hole, described lock-screw 6 upper end is provided with external screw thread and coordinates with described screw hole, external screw thread lower end is provided with conical surface 6-1, conical surface lower end is provided with bar, during use, described nail rod 4 is placed in described transverse opening groove 5-1, get two pieces of described lock-screws 6 and screw in described screw hole respectively, described bar inserts described hole, the inclined-plane of transverse opening groove 5-1 described in described cone match or bottom land are by the locking of described nail rod 4.This locking mechanism more directly more effective pine solving described nail rod moves back problem.
Claims (5)
1. a U-shaped pedicle nail, mainly comprise U-shaped nail (1), lock nut (2), lock dog (3) and nail rod (4), described U-shaped nail (1) is provided with screw division, described screw division upper end is provided with nail seat, described nail seat side is provided with through U-type groove, described U-type groove upper end is provided with female thread, lower end is respectively equipped with transverse opening groove (1-1) on its two side, described transverse opening groove (1-1) with described nail seat axis for axle, by the mouth of described U-type groove both sides, rotating Vortex forms, described lock nut (2) is provided with the external screw thread with described screw-internal thread fit, and be threaded onto in described female thread, described lock nut (2) upper end is provided with tooling hole, described lock dog (3) active link is in the lower end of described lock nut (2), described nail rod (4) is placed in described transverse opening groove (1-1), it is characterized in that: a side of described transverse opening groove (1-1) or two sides are set to towards the uncovered inclined-plane (1-2) of U-type groove, two linear contact lay are become with nail clavate, and make the small semicircle of described nail rod (4) be in U-type groove, the lower end of described lock dog is provided with lock body (3-1), described lock body (3-1) transverse ends is respectively equipped with voussoir (3-4), by two voussoirs (3-4) of lock nut (2) by described lock body (3-1), simultaneously between press-in nail rod and U-type groove sidewall, by described nail rod (4) locking.
2. a kind of U-shaped pedicle nail according to claim 1, it is characterized in that: described voussoir (3-4) and the described face of following closely rod (4) and contacting, be set to described nail seat axis for axle, the face of downward spiralization, make it remain linear contact lay excellent with described nail.
3. a kind of U-shaped pedicle nail according to claim 1, it is characterized in that: the upper end of described lock body (3-1) is provided with screw rod (3-2), the optical axis portion (3-3) being less than screw rod (3-2) core diameter of thread is provided with between described screw rod (3-2) and described lock body (3-1), the lower end of described lock nut (2) is provided with the screwed hole (2-1) coordinated with described screw rod (3-2), cavity (2-2) is provided with between this screwed hole (2-1) upper end and described tooling hole, described screw rod (3-2) is threaded through described screwed hole (2-1) and is placed in described cavity (2-2), described screwed hole (2-1) is placed in described optical axis portion (3-3) simultaneously.
4. a kind of U-shaped pedicle nail according to claim 3, is characterized in that: the screw thread of the screwed hole (2-1) of described lock nut (2) and the external thread rotary of described lock nut (2) are to contrary.
5. a U-shaped pedicle nail, mainly comprise U-shaped nail (5) and nail rod (4), described U-shaped nail (5) lower end is provided with screw division, the upper end of screw division is provided with nail seat, nail seat side is provided with through U-type groove, U-type groove two side is respectively equipped with transverse opening groove (5-1), and with nail seat axis for axle rotating Vortex by the mouth of U-type groove both sides forms, transverse opening groove (5-1) forms two suspended walls (5-2) with the upper end of nail seat, it is characterized in that: a kind of U-shaped pedicle nail also comprises lock-screw (6), one side of described transverse opening groove (5-1) or two sides are set to towards the uncovered inclined-plane of U-type groove, or the shape of transverse opening groove (5-1) bottom land closely cooperates with nail rod (4), and form two linear contact lay with nail rod (4), the outside of upper described nail rod (4) of two suspended walls (5-2) arranges the screw hole of up/down perforation suspended wall (5-2) respectively, the downside of transverse opening groove (5-1) is respectively equipped with the hole coaxial with screw hole, lock-screw (6) upper end is provided with external screw thread and coordinates with described screw hole, external screw thread lower end is provided with the conical surface (6-1), conical surface lower end is provided with bar, nail rod (4) is placed in transverse opening groove (5-1), lock-screw (6) screws in described screw hole respectively, described bar inserts described hole, the inclined-plane of transverse opening groove (5-1) described in described cone match or bottom land will follow closely rod (4) locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520871734.7U CN205181460U (en) | 2015-10-29 | 2015-10-29 | U type pedicle of vertebral arch nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520871734.7U CN205181460U (en) | 2015-10-29 | 2015-10-29 | U type pedicle of vertebral arch nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205181460U true CN205181460U (en) | 2016-04-27 |
Family
ID=55774506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520871734.7U Withdrawn - After Issue CN205181460U (en) | 2015-10-29 | 2015-10-29 | U type pedicle of vertebral arch nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205181460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342684A (en) * | 2015-10-29 | 2016-02-24 | 山东航维骨科医疗器械股份有限公司 | U-shaped pedicle screw |
-
2015
- 2015-10-29 CN CN201520871734.7U patent/CN205181460U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342684A (en) * | 2015-10-29 | 2016-02-24 | 山东航维骨科医疗器械股份有限公司 | U-shaped pedicle screw |
| CN105342684B (en) * | 2015-10-29 | 2017-03-29 | 山东航维骨科医疗器械股份有限公司 | A kind of U-shaped pedicle nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20170329 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20170329 |