CN213217538U - Quick clamping jaw of transverse connector for spinal fixation - Google Patents
Quick clamping jaw of transverse connector for spinal fixation Download PDFInfo
- Publication number
- CN213217538U CN213217538U CN202021526588.1U CN202021526588U CN213217538U CN 213217538 U CN213217538 U CN 213217538U CN 202021526588 U CN202021526588 U CN 202021526588U CN 213217538 U CN213217538 U CN 213217538U
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- China
- Prior art keywords
- hook body
- hole
- groove
- locking block
- clamping jaw
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- Expired - Fee Related
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- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000020339 Spinal injury Diseases 0.000 description 1
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a fixed swift clamping jaw of cross-connector of using of backbone, including jack catch and latch segment, the latch segment passes through locking screw and is connected with the jack catch, and the latch segment constitutes a draw-in groove with the jack catch, adjusts locking screw and can make the latch segment activity with the regulation of draw-in groove opening size. The utility model discloses a latch segment of swing joint in the jack catch constitutes the draw-in groove jointly with the jack catch to adjust the relative position of latch segment and jack catch through locking screw, thereby adjust the size of draw-in groove and the opening size of draw-in groove in a flexible way, it is more convenient to install, can avoid the connective bar to deviate from after the installation.
Description
Technical Field
The utility model belongs to the technical field of spinal fixation apparatus, concretely relates to fixed swift clamping jaw of cross connector of using of backbone.
Background
In spinal injury operation, usually adopt backbone fixer to fix the treatment to the backbone, backbone fixer includes nail stick system and cross connector, and the cross connector links two nail stick systems of establishing on backbone both sides branch together, makes backbone fixer become a whole to improve the location effect to the backbone.
When the cross connector is installed, the connecting rod of the traditional clamping jaws at two ends of the cross connector in a clamping nail rod system is inconvenient to clamp, the size adjusting portion of the clamping opening is convenient, the stability after clamping is unreliable, and the connecting rod is easy to fall off from the clamping jaws after being stressed.
Therefore, a fast clamping jaw of the transverse connector for spinal fixation is needed to be designed, wherein the clamping size can be conveniently adjusted during installation, and the connecting rod can be prevented from falling off after installation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the transverse connector rapid clamping jaw for spinal fixation can be conveniently adjusted in clamping size during installation and can prevent the connecting rod from dropping off after installation.
In order to solve the technical problem, the utility model discloses a technical scheme is: the quick clamping jaw of the transverse connector for fixing the spine comprises a clamping jaw and a locking block, wherein the locking block is connected with the clamping jaw through a locking screw, the locking block and the clamping jaw form a clamping groove, and the locking block can move to adjust the opening size of the clamping groove by adjusting the locking screw.
Preferably, the jaw includes a base, an upper hook body integrally formed on one side surface of the base to extend outward, a free end of the upper hook body being bent downward, the lower hook body extends out of the base towards one side of the upper hook body along the lower edge of the locking block, the lower hook body is opposite to the upper hook body, the lower hook body, the base and the upper hook body jointly form a clamping groove, and an opening of the clamping groove is formed between the free end of the lower hook body and the free end of the upper hook body; when the locking screw is screwed to drive the locking block to move downwards, the lower hook body is driven to move downwards, the free end of the lower hook body is gradually far away from the free end of the upper hook body, so that the opening of the clamping groove is enlarged, and otherwise, the opening of the clamping groove is reduced.
As an optimal scheme, locking screw and through-hole clearance fit, locking screw can swing in the through-hole, be provided with the guide way of mutual symmetry on the both sides inner wall of spout respectively, the extending direction of guide way is on a parallel with the axial of through-hole, is provided with the guide slider with the guide way one-to-one on the both sides outer wall of latch segment respectively, and one side that guide slider is towards the draw-in groove is the arc surface, and one side that is back to the draw-in groove then comprises two crossing guide plane, and the reentrant corner that two guide plane constitute is relative with the arc surface.
As a preferable scheme, a connecting hole is formed in the side surface of the base, which is back to the upper hook body.
As a preferred scheme, the connecting hole is communicated with the sliding groove, and a mounting cavity is reserved between the locking block and the connecting hole.
Preferably, the connection hole is a threaded hole.
Preferably, an expansion hole is formed in the end face of the lower end of the locking screw.
The utility model has the advantages that: the utility model discloses a latch segment of swing joint in the jack catch constitutes the draw-in groove jointly with the jack catch to adjust the relative position of latch segment and jack catch through locking screw, thereby adjust the size of draw-in groove and the opening size of draw-in groove in a flexible way, it is more convenient to install, can avoid the connective bar to deviate from after the installation.
Drawings
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is an exploded view of a jaw of the present invention;
figure 2 is a cross-sectional view of the jaw of the present invention;
FIG. 3 is a schematic view of the jaw configuration;
in FIGS. 1 to 3: 1. the locking device comprises a claw, 101, a base, 102, an upper hook body, 103, an enclosing arc, 104, a sliding groove, 105, a through hole, 106, a guide groove, 107, a connecting hole, 108, a mounting cavity, 2, a locking block, 201, a first threaded hole, 202, a lower hook body, 203, a guide sliding block, 204, an arc surface, 205, a guide plane, 3, a locking screw, 4, a clamping groove, 5 and an expansion hole.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 1-3, the quick clamping jaw of the transverse connector for fixing the spine comprises a clamping jaw 1 and a locking block 2, wherein the locking block 2 is connected with the clamping jaw 1 through a locking screw 3, the locking block 2 and the clamping jaw 1 form a clamping groove 4, and the locking screw 3 is adjusted to enable the locking block 2 to move so as to adjust the opening size of the clamping groove 4.
The claw 1 comprises a base 101, an upper hook body 102 extending outwards is integrally formed on one side surface of the base 101, the free end of the upper hook body 102 is bent downwards and forms a surrounding arc 103 with a downward opening together with the base 101, a sliding groove 104 is further formed on the side surface of the base 101 provided with the upper hook body 102, the sliding groove 104 is positioned below the upper hook body 102, a locking block 2 is inserted in the sliding groove 104 in a sliding manner, a through hole 105 extending downwards and communicated with the sliding groove 104 is formed at the top of the base 101, a first threaded hole 201 coaxially arranged with the through hole 105 is formed at the upper end of the locking block 2, a locking screw 3 is inserted into the sliding groove 104 from the upper end of the through hole 105 and is in threaded connection with the first threaded hole 201 on the locking block 2, a lower hook body 202 extending out of the base 101 towards one side of the upper hook body 102 is integrally formed below the locking block 2, the lower hook body 202 is opposite to the upper hook body 102, and the lower hook body 202, an opening of the clamping groove 4 is formed between the free end of the lower hook body 202 and the free end of the upper hook body 102; when the locking screw 3 is screwed to drive the locking block 2 to move downwards, the lower hook body 202 is driven to move downwards, the free end of the lower hook body 202 is gradually far away from the free end of the upper hook body 102, so that the opening of the clamping groove 4 is enlarged, and otherwise, the opening of the clamping groove 4 is reduced.
Locking screw 3 and through-hole 105 clearance fit, locking screw 3 can swing in through-hole 105, be provided with the guide way 106 of mutual symmetry on the both sides inner wall of spout 104 respectively, the extending direction of guide way 106 is on a parallel with the axial of through-hole 105, be provided with the guide slider 203 with guide way 106 one-to-one on the both sides outer wall of latch segment 2 respectively, one side that guide slider 203 is towards draw-in groove 4 is arc surface 204, and one side of keeping away from draw-in groove 4 then comprises two crossing guide plane 205, and the reentrant corner that two guide plane 205 constitute is relative with arc surface 204. Can drive latch segment 2 through swing locking screw 3 and rotate, latch segment 2 rotates the opening size that can quick adjustment draw-in groove 4, uses convenient and fast more.
A side surface of the base 101 facing away from the upper hook 102 is provided with a connecting hole 107 for connecting a connecting rod (not shown). In the present embodiment, the connecting hole 107 is preferably communicated with the sliding groove 104, and a mounting cavity 108 is left between the locking block 2 and the connecting hole 107, and the mounting cavity can be used for accommodating a ball head at the end of the connecting rod to form a universal joint. Be provided with expansion hole 5 on the 3 lower extreme terminal surfaces of locking screw, on locking screw 3 is connected to latch segment 2 to make locking screw 3's lower extreme stretch out behind latch segment 2, utilize the reamer to expand hole 5, make locking screw 3 lower extreme expand outward, the diameter increase, thereby avoid locking screw to break away from in first screw hole 201, also can increase reverse engineering's the degree of difficulty.
In this embodiment, the connection hole 107 may also be a threaded hole, when the connection hole 107 is a threaded hole, the connection hole 107 may or may not be communicated with the sliding slot 104, and the connection rod and the clamping jaw are connected by a thread, which is a structure with lower manufacturing cost.
Of course, in practical implementation, the connecting hole 107 may be omitted, such as welding the connecting rod directly to the jaw, or casting or machining the connecting rod and the jaw integrally.
The utility model discloses the working process is: as shown in fig. 1 to 3, when the clamping jaw is used for clamping the connecting rod, the clamping jaw can be clamped on the connecting rod by loosening the locking screw 3 until the opening of the clamping groove 4 is larger than the diameter of the connecting rod, then the locking screw 3 is screwed down to reduce the opening of the clamping groove 4, and the connecting rod is tightly clamped in the clamping groove 4; after the locking screw 3 can be partially loosened, the locking block 2 is rotated by swinging the locking screw 3, the locking block 2 drives the lower hook body 202 to swing downwards to open the opening of the clamping groove 4, then the clamping jaw is clamped on the connecting rod, then the locking screw 3 is screwed down to reduce the opening of the clamping groove 4, and the connecting rod is tightly clamped in the clamping groove 4.
The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments in use, and are not intended to limit the invention; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (7)
1. The quick clamping jaw of the transverse connector for fixing the spine is characterized by comprising a clamping jaw (1) and a locking block (2), wherein the locking block (2) is connected with the clamping jaw (1) through a locking screw (3), the locking block (2) and the clamping jaw (1) form a clamping groove (4), and the locking screw (3) is adjusted to enable the locking block (2) to move so as to adjust the opening size of the clamping groove (4).
2. The quick clamping jaw of the cross connector for spinal fixation according to claim 1, wherein the clamping jaw (1) comprises a base (101), an upper hook body (102) extending outwards is integrally formed on one side surface of the base (101), the free end of the upper hook body (102) bends downwards to form a downward-opening enclosing arc (103) together with the base (101), a sliding groove (104) is further formed on the side surface of the base (101) provided with the upper hook body (102), the sliding groove (104) is positioned below the upper hook body (102), the locking block (2) is inserted in the sliding groove (104) in a sliding manner, a through hole (105) extending downwards and communicated with the sliding groove (104) is formed in the top of the base (101), a first threaded hole (201) coaxially arranged with the through hole (105) is formed in the upper end of the locking block (2), and a locking screw (3) is inserted into the sliding groove (104) from the upper end of the through hole (105) and is in threaded connection with the first threaded hole (201) in the locking block (2), a lower hook body (202) extending out of the base (101) from one side of the upper hook body (102) is integrally formed at the lower edge of the locking block (2), the lower hook body (202) is opposite to the upper hook body (102), the lower hook body (202), the base (101) and the upper hook body (102) jointly form a clamping groove (4), and an opening of the clamping groove (4) is formed between the free end of the lower hook body (202) and the free end of the upper hook body (102); when the locking screw (3) is screwed to drive the locking block (2) to move downwards, the lower hook body (202) is driven to move downwards, the free end of the lower hook body (202) is gradually far away from the free end of the upper hook body (102), so that the opening of the clamping groove (4) is enlarged, and otherwise, the opening of the clamping groove (4) is reduced.
3. The quick clamping jaw of the transverse connector for spinal fixation according to claim 2 is characterized in that the locking screw (3) is in clearance fit with the through hole (105), the locking screw (3) can swing in the through hole (105), the inner walls of the two sides of the sliding groove (104) are respectively provided with guide grooves (106) which are symmetrical to each other, the extension direction of the guide grooves (106) is parallel to the axial direction of the through hole (105), the outer walls of the two sides of the locking block (2) are respectively provided with guide sliding blocks (203) which are in one-to-one correspondence with the guide grooves (106), one side of each guide sliding block (203) facing the clamping groove (4) is an arc surface (204), one side facing away from the clamping groove (4) is composed of two crossed guide planes (205), and the internal corner composed of the two guide planes (205) is opposite to the arc surface (204).
4. The quick clamping jaw of the cross connector for spinal fixation as recited in claim 3, characterized in that a connecting hole (107) is opened on the side of the base (101) opposite to the upper hook body (102).
5. The quick connector jaw for spinal fixation as recited in claim 4, characterized in that said connecting hole (107) communicates with a sliding groove (104), and a mounting cavity (108) is left between said locking block (2) and said connecting hole (107).
6. A quick connector jaw according to claim 4 for spinal fixation, characterized in that said connection holes (107) are threaded holes.
7. The quick clamping jaw of the transverse connector for spinal fixation according to any one of claims 1 to 6 is characterized in that the end face of the lower end of the locking screw (3) is provided with an expanding hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021526588.1U CN213217538U (en) | 2020-07-28 | 2020-07-28 | Quick clamping jaw of transverse connector for spinal fixation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021526588.1U CN213217538U (en) | 2020-07-28 | 2020-07-28 | Quick clamping jaw of transverse connector for spinal fixation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213217538U true CN213217538U (en) | 2021-05-18 |
Family
ID=75891064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021526588.1U Expired - Fee Related CN213217538U (en) | 2020-07-28 | 2020-07-28 | Quick clamping jaw of transverse connector for spinal fixation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213217538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023245870A1 (en) * | 2022-06-23 | 2023-12-28 | 中国人民解放军总医院第四医学中心 | Transverse connection apparatus and resetting and fixing system using same |
-
2020
- 2020-07-28 CN CN202021526588.1U patent/CN213217538U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023245870A1 (en) * | 2022-06-23 | 2023-12-28 | 中国人民解放军总医院第四医学中心 | Transverse connection apparatus and resetting and fixing system using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |