CN216021202U - Percutaneous vertebral body distraction repositor - Google Patents
Percutaneous vertebral body distraction repositor Download PDFInfo
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- CN216021202U CN216021202U CN202122243760.3U CN202122243760U CN216021202U CN 216021202 U CN216021202 U CN 216021202U CN 202122243760 U CN202122243760 U CN 202122243760U CN 216021202 U CN216021202 U CN 216021202U
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- outer sleeve
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Abstract
The utility model relates to a percutaneous centrum opening restorer which comprises a handle, a rotary handle, a connecting rod, an outer sleeve, a central rod, a locking screw and an opening head, wherein the front end of the rotary handle extends into the handle and is fixedly connected with the tail end of the connecting rod, the outer wall of the connecting rod is provided with an outer ring groove, the outer wall of the handle is provided with a screw hole, the locking screw is arranged in the screw hole, the tail end of the outer sleeve is fixedly connected with the front end of the handle, the tail end of the central rod penetrates through the outer sleeve and is fixedly connected with the front end of the connecting rod, the front end of the central rod extends out of the outer sleeve, and the front ends of the central rod and the outer sleeve are in transmission fit with the opening head, so that the opening head is driven to be opened or closed when the rotary handle drives the central rod to move, and the locking screw is rotated to enter the handle to abut and limit the connecting rod.
Description
Technical Field
The utility model relates to the technical field of orthopedic medical instruments, in particular to a percutaneous vertebral body distraction repositor.
Background
With the aging population, osteoporosis is increasingly becoming one of the major health risks for the elderly. Fracture is the most harmful complication of osteoporosis, wherein, the osteoporotic vertebral compression fracture is the most common osteoporotic fracture, which is close to half of the total osteoporotic fracture. Kyphoplasty (KP) was introduced at the end of the last century and is an emerging minimally invasive technique for the treatment of vertebral compression fractures. The percutaneous vertebral body distraction repositor is an important instrument for clinically treating thoracolumbar fracture.
In the prior art, patent document No. CN102274066B discloses a transpedicular vertebral fracture reduction device, which comprises a head, a main body and a tail. The head includes hinge structure, and hinge structure includes at least two sets of hinges, and every group hinge includes four interconnect's hinge piece at least. The head plays a role of skeleton in the expanding process of the vertebral body repositor, and is spontaneously arranged to form an arc shape to be expanded in a three-dimensional way in all directions.
Another patent document with publication number CN201847760U discloses a vertebral column vertebral body distractor, which is a device for distracting a vertebral gap, and comprises a pushing device and an expanding device, wherein the pushing device is connected with the expanding device through a mandrel, the expanding device is provided with a connecting rod, a near side stay bar, a far side stay bar and a middle stay bar, the connecting rod movably connects the near side stay bar with the mandrel, and the near side stay bar, the far side stay bar and the middle stay bar are movably connected.
The vertebral body distraction devices with two structures have the same technical problem that the distraction device is not locked and positioned after distraction, so that the distraction device is loosened.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a percutaneous vertebral body distraction repositor which has a simple structure and is easy to lock.
In order to solve the technical problems, the percutaneous vertebral body opening restorer provided by the utility model comprises a handle, a rotating handle, a connecting rod, an outer sleeve, a central rod, a locking screw and an opening head, wherein the front end of the rotating handle extends into the handle and is fixedly connected with the tail end of the connecting rod, an outer ring groove is formed in the outer wall of the connecting rod, a screw hole is formed in the outer wall of the handle, the locking screw is arranged in the screw hole, the tail end of the outer sleeve is fixedly connected with the front end of the handle, the tail end of the central rod penetrates through the outer sleeve and is fixedly connected with the front end of the connecting rod, the front end of the central rod extends out of the outer sleeve, and the front ends of the central rod and the outer sleeve are in transmission fit with the opening head, so that the opening head is driven to be opened or closed when the rotating handle drives the central rod to move, and the locking screw is rotated to enter the handle to abut and limit the connecting rod.
Further, the opening head comprises a plurality of groups of connecting rod devices, each group of connecting rod devices comprises an inner connecting rod, a middle connecting rod, a front connecting rod and a supporting connecting rod, the tail end of each inner connecting rod is in hinged fit with the front end of the outer sleeve, the tail end of each middle connecting rod is in hinged fit with the front end of the corresponding inner connecting rod, the tail end of each front connecting rod is in hinged fit with the front end of the corresponding middle connecting rod, the front end of each front connecting rod is in hinged fit with the front end of the central rod, one end of each supporting connecting rod is in hinged fit with the front end of the corresponding inner connecting rod, the other end of each supporting connecting rod is in hinged fit with the inner side of the front end of the central rod, so that the central rod drives the front connecting rod, the middle connecting rod and the inner connecting rod to be close to the central rod when extending forwards in the outer sleeve, and drives the front connecting rod, the middle connecting rod and the inner connecting rod to be away from the central rod to be opened when the central rod retracts backwards.
Further, the support head comprises 4 groups of connecting rod devices, and the 4 groups of connecting rod devices are symmetrically arranged.
Further, set gradually communicating swing handle installation cavity, connecting rod installation cavity, well core rod installation cavity, outer tube installation cavity on the handle, the front end of swing handle sets up the double-screw bolt with swing handle installation cavity screw-thread fit, the center of double-screw bolt sets up the connecting rod jack with connecting rod looks adaptation to the tail end and the connecting rod jack grafting cooperation of connecting rod behind the double-screw bolt that makes the swing handle stretched into swing handle installation cavity.
Furthermore, the rotary handle is provided with a state mark, so that an operator can operate the rotary handle conveniently.
Furthermore, the center of the front end of the connecting rod is provided with a central rod mounting hole matched with the central rod, so that the tail end of the central rod penetrates through the central rod mounting cavity and then is fixedly inserted into the central rod mounting hole.
Furthermore, the front end of the outer sleeve is provided with scales for marking.
Furthermore, the percutaneous vertebral body distraction repositor also comprises a connecting seat, the front end of the handle is provided with an installation table, and the outer sleeve installation cavity is arranged at the center of the installation table, so that the outer sleeve is inserted into the outer sleeve installation cavity and then the connecting seat is in threaded connection with the outer wall of the installation table.
The technical effects of the utility model are that: (1) compared with the prior art, the percutaneous vertebral body distraction repositor has the advantages that the locking screw is arranged, so that after the rotating handle rotates to a required position, the locking screw radially applies pressure to the connecting rod, the connecting rod can be effectively fixed, the central rod is fixed, and the distraction head is prevented from loosening; (2) the rotary handle is provided with the two state marks of the support and the folding in the two rotating directions, so that an operator can be reminded of correctly controlling the rotating directions conveniently, and the rotary handle is visual and convenient; (3) scales for marking the use depth of the percutaneous vertebral body distraction repositor are arranged on the outer sleeve, so that an operator can conveniently control the scales; (4) the arrangement of the outer ring groove facilitates the rotation of the connecting rod, and the locking screw can rotate the connecting rod without being completely detached.
Drawings
The utility model is described in further detail below with reference to the drawings of the specification:
FIG. 1 is a schematic structural view of the percutaneous vertebral distraction reducer of the utility model closed;
FIG. 2 is a schematic view of the percutaneous vertebral distraction reducer of the utility model in a partially sectioned configuration when closed;
FIG. 3 is an enlarged partial schematic view of area A of FIG. 2;
FIG. 4 is a schematic structural view of the percutaneous vertebral distraction reducer of the utility model when expanded;
FIG. 5 is a schematic view of the percutaneous vertebral distraction reducer of the utility model in a partially sectioned configuration when expanded;
FIG. 6 is an enlarged partial schematic view of region B of FIG. 5;
FIG. 7 is a schematic cross-sectional view of the handle and twist grip;
FIG. 8 is a schematic view of a partial cross-sectional structure of the swing handle;
FIG. 9 is a schematic sectional view of the connecting rod;
FIG. 10 is a schematic cross-sectional view of the handle;
in the figure: a handle 1, a rotary handle installation cavity 11, a connecting rod installation cavity 12, a central rod installation cavity 13, a first annular platform 14, a second annular platform 15, a connecting platform 16, an outer sleeve installation cavity 17,
a rotary handle 2, a stud 21, a connecting rod jack 22, a state mark 23,
an outer sleeve 3, a connecting seat 4,
a supporting head 5, an inner connecting rod 51, a middle connecting rod 52, a front connecting rod 53, a supporting connecting rod 54, a pin shaft 55,
Detailed Description
Example 1
As shown in fig. 1 to 10, the percutaneous centrum distraction repositor of the embodiment comprises a handle 1, a rotating handle 2, a connecting rod 8, an outer sleeve 3, a central rod 9, a locking screw 7 and a distraction head 5, a communicating rotating handle installation cavity 11 is sequentially arranged on the handle 1, a connecting rod installation cavity 12, a central rod installation cavity 13, an outer sleeve installation cavity 17, a first ring platform 14 is formed between the rotating handle installation cavity 11 and the connecting rod installation cavity 12, a second ring platform 15 is formed between the connecting rod installation cavity 12 and the central rod installation cavity 13, a screw hole is formed in the side wall of the connecting rod installation cavity 13, and is in threaded fit with the screw hole, and the locking screw 7 is convenient to detach.
The front end of the turning handle 2 is provided with a stud 21 in threaded fit with the inner wall 11 of the turning handle installation cavity, the center of the stud 21 is provided with a connecting rod jack 22 matched with the connecting rod 8, so that the stud 21 of the turning handle 2 extends into the turning handle installation cavity 11, the tail end of the connecting rod 8 is in plug fit with the connecting rod jack 22, and the stud 21 is limited by the first annular table 14; the turning handle 22 is provided with two state marks 23 for retracting and supporting in two directions, which is convenient for the operator to operate and recognize.
The outer wall of connecting rod 8 sets up outer annular groove 81, arranges outer annular groove 81 department in when locking screw 7 twists, and the front end center of connecting rod 8 sets up with well core rod mounting hole 82 of well core rod 9 looks adaptation to it is fixed with well core rod mounting hole 82 to peg graft behind the messenger well core rod 9's tail end passing well core rod installation cavity 13.
The supporting head 5 comprises 4 groups of connecting rod devices, and the 4 groups of connecting rod devices are symmetrically arranged; each group of connecting rod devices comprises an inner connecting rod 51, an intermediate connecting rod 52, a front connecting rod 53 and a supporting connecting rod 54, the tail end of each inner connecting rod 51 is in hinged fit with a front end distribution shaft 55 of the outer sleeve 3, the tail end of each intermediate connecting rod 52 is in hinged fit with a front end distribution shaft 55 of the corresponding inner connecting rod 51, the tail end of each front connecting rod 53 is in hinged fit with a front end distribution shaft 55 of the corresponding intermediate connecting rod 52, the front end of each front connecting rod 53 is in hinged fit with a front end distribution shaft 55 of the central rod 9, one end of each supporting connecting rod 54 is in hinged fit with a front end distribution shaft 55 of the corresponding inner connecting rod 51 and shares the same pin shaft with the hinges of the inner connecting rod 51 and the intermediate connecting rod 52; the other end of each supporting link 54 is in hinged fit with the inner side of the front end of the central rod 9 through a pin 55, so that the central rod 9 drives the front link 53, the middle link 52 and the inner link 51 to approach the central rod 9 to close the opening end 5 when extending forwards in the outer casing 3, and drives the front link 53, the middle link 52 and the inner link 51 to move away from the central rod 9 to open the opening end 5 when retracting backwards of the central rod 9.
Percutaneous centrum struts restorer still includes connecting seat 4, and the front end of handle 1 sets up mount table 16, and the center of mount table 3 is arranged in to outer tube installation cavity 17 to make outer tube 3 insert behind outer tube installation cavity 17 connecting seat 4 and mount table 16's outer wall threaded connection, outer tube 3 passes connecting seat 4, tightens up by connecting seat 4 to outer tube 3 spacing.
During the assembly, the front end of swing handle 2 stretches into in the handle 1 and links to each other with the tail end fixed phase of connecting rod 8, the tail end of outer tube 3 is fixed with the front end of handle 2 and links to each other, the tail end of well core rod 9 passes outer tube 3 and fixed with the front end of connecting rod 8 and links to each other, the front end of well core rod 9 stretches out outer tube 3, and the front end of well core rod 9 and outer tube 3 all with strut first 5 transmission coordination, so that drive strut first 5 when the core rod 9 removes in the 2 drive of swing handle, and carry out the butt spacing to connecting rod 8 in making it get into handle 1 through rotatory locking screw 7.
It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the utility model are intended to be covered by the scope of the present invention.
Claims (8)
1. The percutaneous vertebral body opening restorer is characterized by comprising a handle, a rotary handle, a connecting rod, an outer sleeve, a central rod, a locking screw and an opening, wherein the front end of the rotary handle extends into the handle and is fixedly connected with the tail end of the connecting rod, the outer wall of the connecting rod is provided with an outer annular groove, the outer wall of the handle is provided with a screw hole, the locking screw is arranged in the screw hole, the tail end of the outer sleeve is fixedly connected with the front end of the handle, the tail end of the central rod penetrates through the outer sleeve and is fixedly connected with the front end of the connecting rod, the front end of the central rod extends out of the outer sleeve, the front ends of the central rod and the outer sleeve are in transmission fit with the opening head, so that the opening head is driven to be opened or closed when the rotary handle drives the central rod to move, and the opening head is enabled to enter the handle through the locking screw to abut and limit the connecting rod.
2. The percutaneous vertebral body distraction reducer of claim 1, wherein the distractor head comprises a plurality of sets of link means, each set of link means comprising an inner link, an intermediate link, a front link and a support link, the tail end of each inner link being in hinged engagement with the front end of the outer cannula, the tail end of each intermediate link being in hinged engagement with the front end of the corresponding inner link, the tail end of each front link being in hinged engagement with the front end of the corresponding intermediate link, the front end of each front link being in hinged engagement with the front end of the central rod, one end of each support link being in hinged engagement with the front end of the corresponding inner link, the other end of each support link being in hinged engagement with the inside of the front end of the central rod, when the central rod extends forwards in the outer sleeve, the front connecting rod, the middle connecting rod and the inner connecting rod are driven to be close to the central rod to realize closing, and when the central rod contracts backwards, the front connecting rod, the middle connecting rod and the inner connecting rod are driven to be far away from the central rod to realize opening.
3. The percutaneous vertebral body distraction reducer of claim 2, wherein the distractor head comprises 4 sets of linkage arrangements, and the 4 sets of linkage arrangements are symmetrically arranged.
4. The percutaneous vertebral body distraction repositor according to claim 2 or 3, wherein the handle is sequentially provided with a rotating handle installation cavity, a connecting rod installation cavity, a central rod installation cavity and an outer sleeve installation cavity which are communicated, the front end of the rotating handle is provided with a stud in threaded fit with the rotating handle installation cavity, and the center of the stud is provided with a connecting rod jack matched with the connecting rod, so that the tail end of the connecting rod is in plug fit with the connecting rod jack after the stud of the rotating handle extends into the rotating handle installation cavity.
5. The percutaneous vertebral body distraction reducer of claim 4, wherein a status marker is disposed on the handle.
6. The percutaneous vertebral body distraction reducer of claim 5, wherein a central rod mounting hole matched with the central rod is formed in the center of the front end of the connecting rod, so that the tail end of the central rod passes through the central rod mounting cavity and then is fixedly inserted into the central rod mounting hole.
7. The percutaneous vertebral body distraction reducer of claim 6, wherein the front end of the outer sleeve is provided with a scale.
8. The percutaneous vertebral body distraction reducer of claim 7, further comprising a connecting seat, wherein the front end of the handle is provided with a mounting table, and the outer sleeve mounting cavity is arranged at the center of the mounting table, so that the connecting seat is in threaded connection with the outer wall of the mounting table after the outer sleeve is inserted into the outer sleeve mounting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122243760.3U CN216021202U (en) | 2021-09-16 | 2021-09-16 | Percutaneous vertebral body distraction repositor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122243760.3U CN216021202U (en) | 2021-09-16 | 2021-09-16 | Percutaneous vertebral body distraction repositor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216021202U true CN216021202U (en) | 2022-03-15 |
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ID=80598956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122243760.3U Active CN216021202U (en) | 2021-09-16 | 2021-09-16 | Percutaneous vertebral body distraction repositor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216021202U (en) |
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2021
- 2021-09-16 CN CN202122243760.3U patent/CN216021202U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221207 Address after: 213000 No. 699, Renmin Middle Road, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: CHANGZHOU CITY WUJIN CHINESE MEDICINE Hospital Address before: 213000 No. 24, Theater Road, Benniu Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: Rui Lining |
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| TR01 | Transfer of patent right |