CN204765858U - Excellent device of internal fixation of spine nail - Google Patents
Excellent device of internal fixation of spine nail Download PDFInfo
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- CN204765858U CN204765858U CN201520300322.8U CN201520300322U CN204765858U CN 204765858 U CN204765858 U CN 204765858U CN 201520300322 U CN201520300322 U CN 201520300322U CN 204765858 U CN204765858 U CN 204765858U
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- type groove
- stick
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Abstract
The utility model provides an excellent device of internal fixation of spine nail belongs to backbone implantation apparatus field, including left regulation thick stick and the right thick stick of adjusting, be equipped with a connector between left regulation thick stick and the right regulation thick stick, equal swing joint a plurality of pedicle of vertebral arch screw on left side regulation thick stick and the right regulation thick stick, pedicle of vertebral arch screw and left regulation thick stick and right side regulation thick stick are fixed by the housing pin, the pedicle of vertebral arch screw includes the U type groove and the nail body, is equipped with the internal thread on the U type inslot lateral wall, is equipped with the external screw thread on the lateral wall in U type groove, and the housing pin includes and nut and screw is equipped with the internal thread on the inside wall of nut, is equipped with the external screw thread on the lateral wall of screw, the internal thread of nut and the external screw thread looks adaptation in U type groove, the external screw thread of screw and the internal thread looks adaptation in U type groove. The utility model discloses simple structure, simple to operate, locking is reliable, and the too big U type groove that leads to the pedicle of vertebral arch screw of torsion warp in the time of avoiding housing pin locking to a left side is adjusted the thick stick and is taken place with the right side not hard up phenomenon of regulation thick stick, and the clinical use security is high.
Description
Technical field
This utility model relates to spinal implant apparatus field, specifically a kind of vertebral column internal fixation nail stick device.
Background technology
Spine nail rod fixed system is adopted at present clinically in the bone surgery for diseases such as rachiocamposis, dislocation, fracture---internal fixation of spine pedicle screw carries out resetting, fixing.The internal fixation of spine pedicle screw of prior art has a crucial component " nail pressing ", and it plays a part to correct between thick stick and pedicle nail in this retaining mechanism forms a connecting link.Existing nail pressing structure is round, and its medial wall arranges six prismatics or quincuncial through hole, and outer wall arranges screw thread.Under normal circumstances after in nail pressing screw-in pedicle screw U-type groove, also thick stick is corrected in locking, correcting thick stick must not loosen, but locking the required torsion applied for nail pressing of rectification thick stick is difficult to accurate control.When torsion, to cross the active force that conference causes nail pressing to be applied to U-shaped wall by screw thread excessive, and the U-shaped wall of pedicle screw can not bear its active force strengthened and open distortion laterally, makes nail pressing lose locking function, corrects thick stick and loosen.If correct thick stick can not be locked operating time can be caused to extend in operation, therefore existing nail pressing locking mechanism also exists disadvantage on Clinical practice.
Summary of the invention
Problem to be solved in the utility model is: overcome the deficiencies in the prior art, there is provided a kind of structure simple, easy for installation, reliable lock, when housing pin can be avoided to lock, the excessive U-type groove of pedicle screw that causes of torsion is out of shape, thus left adjustment thick stick and right adjustment thick stick loosen phenomenon generation, the vertebral column internal fixation nail stick device that Clinical practice safety is high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of vertebral column internal fixation nail stick device, comprise the left adjustment thick stick and right adjustment thick stick that are symmetrical set, a connector is provided with between described left adjustment thick stick and right adjustment thick stick, the two ends of described adapter are individually fixed on left adjustment thick stick and right adjustment thick stick, described left adjustment thick stick and right adjustment thick stick are all flexibly connected several pedicle screws, and described pedicle screw and left adjustment thick stick and right adjustment thick stick are fixed by housing pin;
Described pedicle screw comprises U-type groove and is positioned at the rivet nut of U-type groove bottom, described U-type groove medial wall is provided with female thread, the lateral wall of described U-type groove is provided with external screw thread, described left adjustment thick stick and right adjustment thick stick are positioned at the bottom of U-type groove, described housing pin is positioned on left adjustment thick stick and right adjustment thick stick, described housing pin comprises nut and screw, the medial wall of described nut is provided with female thread, the lateral wall of described screw is provided with external screw thread, the female thread of described nut and the external screw thread of U-type groove suitable, the external screw thread of described screw and the female thread of U-type groove suitable.
Further, described pedicle screw is unidirectional pedicle screw, Universal pedicle screw, the unidirectional pedicle screw of lengthening or lengthening Universal pedicle screw.
Further, the outer surface of described left adjustment thick stick and right adjustment thick stick is equipped with spacing screw thread, described left adjustment thick stick and right adjustment thick stick are equipped with spacing ring, described spacing ring is provided with female thread, the female thread of described spacing screw thread and spacing ring is suitable, and described pedicle screw is being connected between two spacing rings.
Further, described left adjustment thick stick and right adjustment thick stick are also provided with groove.
Further, described nut is hexagon, square or triangular structure.
Further, the top of described nut is provided with groove, and described groove is in-line, cross or plum-shaped structure.
Further, the lateral wall of described rivet nut is followed successively by from top to bottom cortex screw thread, excessively screw thread and spongiosa screw thread.
Further, the material of described left adjustment thick stick, right adjustment thick stick, adapter, pedicle screw and housing pin is Ti-6Al-4V.
Further, the material of described left adjustment thick stick, right adjustment thick stick, adapter, pedicle screw and housing pin is Ti-6Al-7Nb.
Further, the material of described left adjustment thick stick, right adjustment thick stick, adapter, pedicle screw and housing pin is 00Cr18Ni14Mo3.
The advantage that this utility model has and good effect are:
This utility model structure is simple; easy for installation; the U-type groove of pedicle screw is provided with female thread and external screw thread; female thread and external screw thread are connected with the screw of housing pin and its thread respectively; fixation is played in the inside of screw to U-type groove; nut both played fixation to U-type groove; U-type groove can be protected again; in conjunction with tight; reliable lock; under guarantee housing pin fully compresses the prerequisite of left adjustment thick stick and right adjustment thick stick, when avoiding housing pin to lock, the excessive U-type groove of pedicle screw that causes of torsion is out of shape, and adds the safety of Clinical practice.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the structural representation of embodiment two.
Fig. 3 is the structural representation of embodiment three.
Fig. 4 is the structural representation lengthening unidirectional pedicle screw.
Fig. 5 is the structural representation of unidirectional pedicle screw.
Fig. 6 is and the structural representation lengthening the housing pin that unidirectional pedicle screw coordinates.
Fig. 7 is the structural representation of the housing pin coordinated with unidirectional pedicle screw.
Fig. 8 is and the sectional view lengthening the housing pin that unidirectional pedicle screw coordinates.
Fig. 9 is the sectional view of the housing pin coordinated with unidirectional pedicle screw.
Figure 10 is the structural representation lengthening unidirectional pedicle screw and housing pin annexation.
Figure 11 is the structural representation of unidirectional pedicle screw and housing pin annexation.
In figure: 1, left adjustment thick stick; 2, right adjustment thick stick; 3, adapter; 4, unidirectional pedicle screw; 5, housing pin; 6, U-type groove; 7, rivet nut; 8, nut; 9, screw; 10, spacing screw thread; 11, spacing ring; 12, unidirectional pedicle screw is lengthened; 13, groove; 14, excessive screw thread; 15, spongiosa screw thread.
Detailed description of the invention
Embodiment one
As Fig. 1, 4, 6, shown in 8 and 10, a kind of vertebral column internal fixation nail stick device, comprise the left adjustment thick stick 1 and right adjustment thick stick 2 that are symmetrical set, a connector 3 is provided with between left adjustment thick stick 1 and right adjustment thick stick 2, the two ends of adapter 3 are individually fixed on left adjustment thick stick 1 and right adjustment thick stick 2, left adjustment thick stick 1 and right adjustment thick stick 2 are all flexibly connected three unidirectional pedicle screws 12 of lengthening, lengthen unidirectional pedicle screw 12 to be fixed by housing pin 5 with left adjustment thick stick 1 and right adjustment thick stick 2, left adjustment thick stick 1, right adjustment thick stick 2, adapter 3, the material lengthening unidirectional pedicle screw 12 and housing pin 5 is Ti-6Al-4V,
Lengthen the rivet nut 7 that unidirectional pedicle screw 12 comprises U-type groove 6 and is positioned at U-type groove 6 bottom, U-type groove 6 medial wall is provided with female thread, the lateral wall of U-type groove 6 is provided with external screw thread, left adjustment thick stick 1 and right adjustment thick stick 2 are positioned at the bottom of U-type groove 6, housing pin 5 comprises nut 8 and the screw 9 of square structure, the screw 9 of housing pin 5 is positioned on left adjustment thick stick 1 and right adjustment thick stick 2, the medial wall of nut 8 is provided with female thread, the lateral wall of screw 9 is provided with external screw thread, the female thread of nut 8 and the external screw thread of U-type groove 6 suitable, the external screw thread of screw 9 and the female thread of U-type groove 6 suitable, the top of nut 8 is provided with the groove 13 of in-line structure, the lateral wall of rivet nut 7 is followed successively by cortex screw thread 14 from top to bottom, excessive screw thread 15 and spongiosa screw thread 16.
The work process of the present embodiment: the unidirectional pedicle screw 12 of lengthening is screwed in the vertebral body of patient, the unidirectional pedicle screw of lengthening 12 being positioned at left side is inserted left adjustment thick stick 1, and the lengthening unidirectional pedicle screw 12 being positioned at right side is inserted left adjustment thick stick 2, left adjustment thick stick 1 and right adjustment thick stick 2 is made to be positioned at the bottom of U-type groove 6, the screw 9 of housing pin 5 is screwed in U-type groove 6, the screw 9 of housing pin 5 is positioned on left adjustment thick stick 1 and right adjustment thick stick 2, the female thread of nut 8 and the external screw thread of U-type groove 6 suitable, the external screw thread of screw 9 and the female thread of U-type groove 6 suitable, the nut 8 of housing pin 5 and screw 9 form encircling type with U-type groove 6 and are combined, in conjunction with tight, reliable lock, ensureing under the prerequisite that housing pin 5 fully compresses left adjustment thick stick 1 and right adjustment thick stick 2, when avoiding housing pin 5 to lock, the excessive U-type groove 6 lengthening unidirectional pedicle screw 12 that causes of torsion is out of shape, add the safety of Clinical practice.
Embodiment two
As Fig. 2, 5, 7, shown in 9 and 11, a kind of vertebral column internal fixation nail stick device, comprise the left adjustment thick stick 1 and right adjustment thick stick 2 that are symmetrical set, a connector 3 is provided with between left adjustment thick stick 1 and right adjustment thick stick 2, the two ends of adapter 3 are individually fixed on left adjustment thick stick 1 and right adjustment thick stick 2, left adjustment thick stick 1 and right adjustment thick stick 2 are all flexibly connected three unidirectional pedicle screws 4, unidirectional pedicle screw 4 is fixed by housing pin 5 with left adjustment thick stick 1 and right adjustment thick stick 2, left adjustment thick stick 1, right adjustment thick stick 2, adapter 3, the material of unidirectional pedicle screw 4 and housing pin 5 is Ti-6Al-7Nb,
Unidirectional pedicle screw 4 comprises U-type groove 6 and is positioned at the rivet nut 7 of U-type groove 6 bottom, U-type groove 6 medial wall is provided with female thread, the lateral wall of U-type groove 6 is provided with external screw thread, left adjustment thick stick 1 and right adjustment thick stick 2 are positioned at the bottom of U-type groove 6, housing pin 5 comprises nut 8 and the screw 9 of hexagonal structure, the screw 9 of housing pin 5 is positioned on left adjustment thick stick 1 and right adjustment thick stick 2, the medial wall of nut 8 is provided with female thread, the lateral wall of screw 9 is provided with external screw thread, the female thread of nut 8 and the external screw thread of U-type groove 6 suitable, the external screw thread of screw 9 and the female thread of U-type groove 6 suitable, the top of nut 8 is provided with the groove 13 of decussate texture, the lateral wall of rivet nut 7 is followed successively by cortex screw thread 14 from top to bottom, excessive screw thread 15 and spongiosa screw thread 16.
The work process of the present embodiment: unidirectional pedicle screw 4 is screwed in the vertebral body of patient, the unidirectional pedicle screw 4 being positioned at left side is inserted left adjustment thick stick 1, and the unidirectional pedicle screw 4 being positioned at right side is inserted left adjustment thick stick 2, left adjustment thick stick 1 and right adjustment thick stick 2 is made to be positioned at the bottom of U-type groove 6, the screw 9 of housing pin 5 is screwed in U-type groove 6, the screw 9 of housing pin 5 is positioned on left adjustment thick stick 1 and right adjustment thick stick 2, the female thread of nut 8 and the external screw thread of U-type groove 6 suitable, the external screw thread of screw 9 and the female thread of U-type groove 6 suitable, the nut 8 of housing pin 5 and screw 9 form encircling type with U-type groove 6 and are combined, in conjunction with tight, reliable lock, ensureing under the prerequisite that housing pin 5 fully compresses left adjustment thick stick 1 and right adjustment thick stick 2, when avoiding housing pin 5 to lock, the excessive U-type groove 6 of unidirectional pedicle screw 4 that causes of torsion is out of shape, add the safety of Clinical practice.
Embodiment three
As shown in Fig. 3-11, a kind of vertebral column internal fixation nail stick device, comprise the left adjustment thick stick 1 and right adjustment thick stick 2 that are symmetrical set, a connector 3 is provided with between left adjustment thick stick 1 and right adjustment thick stick 2, the two ends of adapter 3 are individually fixed on left adjustment thick stick 1 and right adjustment thick stick 2, left adjustment thick stick 1 and right adjustment thick stick 2 are all flexibly connected two unidirectional pedicle screws 4 and a unidirectional pedicle screw 12 of lengthening, unidirectional pedicle screw 4 and the unidirectional pedicle screw 12 of lengthening are fixed by housing pin 5 with left adjustment thick stick 1 and right adjustment thick stick 2, left adjustment thick stick 1, right adjustment thick stick 2, adapter 3, unidirectional pedicle screw 4, the material lengthening unidirectional pedicle screw 12 and housing pin 5 is 00Cr18Ni14Mo3,
Unidirectional pedicle screw 4 and the unidirectional pedicle screw 12 of lengthening include U-type groove 6 and are positioned at the rivet nut 7 of U-type groove 6 bottom, U-type groove 6 medial wall is provided with female thread, the lateral wall of U-type groove 6 is provided with external screw thread, left adjustment thick stick 1 and right adjustment thick stick 2 are positioned at the bottom of U-type groove 6, housing pin 5 comprises nut 8 and the screw 9 of hexagonal structure, the screw 9 of housing pin 5 is positioned on left adjustment thick stick 1 and right adjustment thick stick 2, the medial wall of nut 8 is provided with female thread, the lateral wall of screw 9 is provided with external screw thread, the female thread of nut 8 and the external screw thread of U-type groove 6 suitable, the external screw thread of screw 9 and the female thread of U-type groove 6 suitable, the top of nut 8 is provided with the groove 13 of decussate texture, the lateral wall of rivet nut 7 is followed successively by cortex screw thread 14 from top to bottom, excessive screw thread 15 and spongiosa screw thread 16, the outer surface of left adjustment thick stick 1 and right adjustment thick stick 2 is equipped with spacing screw thread 10, left adjustment thick stick 1 and right adjustment thick stick 2 are equipped with spacing ring 11, spacing ring 11 is provided with female thread, spacing screw thread 10 is suitable with the female thread of spacing ring 11, unidirectional pedicle screw 4 and lengthen unidirectional pedicle screw 12 and be all connected between two spacing rings 11.
The work process of the present embodiment: unidirectional pedicle screw 4 and the unidirectional pedicle screw 12 of lengthening are screwed in the vertebral body of patient, the unidirectional pedicle screw 4 and the unidirectional pedicle screw 12 of lengthening that are positioned at left side are inserted left adjustment thick stick 1, and the unidirectional pedicle screw 4 and the unidirectional pedicle screw 12 of lengthening that are positioned at right side are inserted left adjustment thick stick 2, left adjustment thick stick 1 and right adjustment thick stick 2 is made to be positioned at the bottom of U-type groove 6, the screw 9 of housing pin 5 is screwed in U-type groove 6, the screw 9 of housing pin 5 is positioned on left adjustment thick stick 1 and right adjustment thick stick 2, the female thread of nut 8 and the external screw thread of U-type groove 6 suitable, the external screw thread of screw 9 and the female thread of U-type groove 6 suitable, the nut 8 of housing pin 5 and screw 9 form encircling type with U-type groove 6 and are combined, in conjunction with tight, reliable lock, ensureing under the prerequisite that housing pin 5 fully compresses left adjustment thick stick 1 and right adjustment thick stick 2, when avoiding housing pin 5 to lock, the excessive U-type groove 6 of unidirectional pedicle screw 4 and the unidirectional pedicle screw 12 of lengthening that causes of torsion is out of shape, add the safety of Clinical practice.
In addition, unidirectional pedicle screw 4 and lengthen unidirectional pedicle screw 12 between adjacent two spacing rings 11, add unidirectional pedicle screw 4 and lengthen the stability of unidirectional pedicle screw 12 on left adjustment thick stick 1 and right adjustment thick stick 2, preventing the appearance of stripped thread problem.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiments of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to this utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (10)
1. a vertebral column internal fixation nail stick device, it is characterized in that: comprise the left adjustment thick stick and right adjustment thick stick that are symmetrical set, a connector is provided with between described left adjustment thick stick and right adjustment thick stick, the two ends of described adapter are individually fixed on left adjustment thick stick and right adjustment thick stick, described left adjustment thick stick and right adjustment thick stick are all flexibly connected several pedicle screws, and described pedicle screw and left adjustment thick stick and right adjustment thick stick are fixed by housing pin;
Described pedicle screw comprises U-type groove and is positioned at the rivet nut of U-type groove bottom, described U-type groove medial wall is provided with female thread, the lateral wall of described U-type groove is provided with external screw thread, described left adjustment thick stick and right adjustment thick stick are positioned at the bottom of U-type groove, described housing pin is positioned on left adjustment thick stick and right adjustment thick stick, described housing pin comprises nut and screw, the medial wall of described nut is provided with female thread, the lateral wall of described screw is provided with external screw thread, the female thread of described nut and the external screw thread of U-type groove suitable, the external screw thread of described screw and the female thread of U-type groove suitable.
2. a kind of vertebral column internal fixation nail stick device according to claim 1, is characterized in that: described pedicle screw is unidirectional pedicle screw, Universal pedicle screw, the unidirectional pedicle screw of lengthening or lengthening Universal pedicle screw.
3. a kind of vertebral column internal fixation nail stick device according to claim 1 and 2, it is characterized in that: the outer surface of described left adjustment thick stick and right adjustment thick stick is equipped with spacing screw thread, described left adjustment thick stick and right adjustment thick stick are equipped with spacing ring, described spacing ring is provided with female thread, the female thread of described spacing screw thread and spacing ring is suitable, and described pedicle screw is being connected between two spacing rings.
4. a kind of vertebral column internal fixation nail stick device according to claim 1, is characterized in that: described left adjustment thick stick and right adjustment thick stick are also provided with groove.
5. a kind of vertebral column internal fixation nail stick device according to claim 3, is characterized in that: described nut is hexagon, square or triangular structure.
6. a kind of vertebral column internal fixation nail stick device according to claim 5, is characterized in that: the top of described nut is provided with groove, and described groove is in-line, cross or plum-shaped structure.
7. a kind of vertebral column internal fixation nail stick device according to claim 1, is characterized in that: the lateral wall of described rivet nut is followed successively by from top to bottom cortex screw thread, excessively screw thread and spongiosa screw thread.
8. a kind of vertebral column internal fixation nail stick device according to claim 1, is characterized in that: the material of described left adjustment thick stick, right adjustment thick stick, adapter, pedicle screw and housing pin is Ti-6Al-4V.
9. a kind of vertebral column internal fixation nail stick device according to claim 1, is characterized in that: the material of described left adjustment thick stick, right adjustment thick stick, adapter, pedicle screw and housing pin is Ti-6Al-7Nb.
10. a kind of vertebral column internal fixation nail stick device according to claim 1, is characterized in that: the material of described left adjustment thick stick, right adjustment thick stick, adapter, pedicle screw and housing pin is 00Cr18Ni14Mo3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520300322.8U CN204765858U (en) | 2015-05-11 | 2015-05-11 | Excellent device of internal fixation of spine nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520300322.8U CN204765858U (en) | 2015-05-11 | 2015-05-11 | Excellent device of internal fixation of spine nail |
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| Publication Number | Publication Date |
|---|---|
| CN204765858U true CN204765858U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520300322.8U Active CN204765858U (en) | 2015-05-11 | 2015-05-11 | Excellent device of internal fixation of spine nail |
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| CN (1) | CN204765858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799927A (en) * | 2015-05-11 | 2015-07-29 | 北京贝思达生物技术有限公司 | Spinal internal fixation screw-rod device |
-
2015
- 2015-05-11 CN CN201520300322.8U patent/CN204765858U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799927A (en) * | 2015-05-11 | 2015-07-29 | 北京贝思达生物技术有限公司 | Spinal internal fixation screw-rod device |
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