CN110169815B - Rigid extension sheet and pedicle screw - Google Patents
Rigid extension sheet and pedicle screw Download PDFInfo
- Publication number
- CN110169815B CN110169815B CN201910402512.3A CN201910402512A CN110169815B CN 110169815 B CN110169815 B CN 110169815B CN 201910402512 A CN201910402512 A CN 201910402512A CN 110169815 B CN110169815 B CN 110169815B
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- piece
- extension piece
- rigid
- nail seat
- nail
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7046—Screws or hooks combined with longitudinal elements which do not contact vertebrae the screws or hooks being mobile in use relative to the longitudinal element
Abstract
The invention relates to a rigid extension sheet and a pedicle screw, which comprise a screw seat, an extension sheet connecting mechanism and a ball head screw, wherein the screw seat is assembled and connected with the ball head screw, and the innovation points are as follows: the two rigid extension pieces are oppositely arranged on two sides of the nail seat and are detachably connected with the nail seat through an extension piece connecting mechanism; the screw thread groove is formed in the inner wall of the rigid extension piece along the length direction of the rigid extension piece, a limiting flange is arranged at the notch of the screw thread groove of the rigid extension piece, a screw thread piece is arranged in the screw thread groove of the rigid extension piece and is in sliding fit with the screw thread groove of the rigid extension piece, and the screw thread piece on the rigid extension piece is detachably connected with the screw seat through an extension piece connecting mechanism. The invention not only can self-adaptively adjust the lead of the same thread, but also is not easy to generate thread dislocation when being assembled with the nail seat.
Description
Technical Field
The invention particularly relates to a rigid extension plate and a pedicle screw suitable for a spinal percutaneous minimally invasive system, and belongs to the technical field of instruments for orthopedics.
Background
Compared with the traditional open surgery with large trauma, high risk and long recovery period, the spine minimally invasive surgery for the patients with the spine diseases has the advantages of small tissue damage, quick recovery, low cost, good psychological effect of the patients and the like.
At present, the screw thread that is rather than each other as an organic whole is equipped with on the extension piece inner wall of pedicle of vertebral arch nail among the prior art, and the extension piece passes through coupling mechanism and is connected with the nail seat, and this kind of structure has following shortcoming:
firstly, in the process of assembling the extension piece and the nail seat through the connecting mechanism, the situation of screw dislocation is easy to occur, once the screw dislocation occurs, the connecting rod of the connecting mechanism cannot be screwed to the bottom of the nail seat, so that the connecting mechanism and the nail seat cannot be accurately connected, and the connecting mechanism and the nail seat are not locked in place, so that the integral fixation of the pedicle nail is failed, the operation failure is easy to cause, and the physical and psychological trauma is brought to a patient;
secondly, due to the existing machining precision problem, the matching of the threads on the inner walls of the extension pieces in different batches and the threads on the connecting mechanism is different, so that the spiral line tracks of the extension pieces and the threads on the connecting mechanism are inconsistent, dislocation occurs, and the products are unqualified products, so that the rejection rate is high, and the production cost is also high;
third, traditional extension piece is flexible extension piece, is plastic products (for example, PPSU plastics), when putting into the patient internal, can produce harm to the human body, specifically when the operation, need carry the pulling to the extension piece, and flexible extension piece can take place distortion at this in-process, leads to intensity to lose, has influenced effects such as orthopedic, the reduction of patient's vertebra greatly.
Disclosure of Invention
The purpose of the invention is: the rigid extension piece and the pedicle screw not only can self-adaptively adjust the lead of the same thread, but also are not easy to generate screw thread dislocation when the extension piece is assembled with the screw seat.
In order to achieve the above object, a first technical solution of the present invention is: a rigid extension piece comprises an extension piece body, and is characterized in that: the extension piece is characterized by further comprising a threaded piece, a threaded piece groove is formed in the inner wall of the extension piece body along the length direction of the extension piece body, a limiting flange is arranged at the notch of the threaded piece groove of the extension piece body, the threaded piece is arranged in the threaded piece groove, and the threaded piece is in sliding fit with the threaded piece groove of the extension piece body.
In the first technical solution, the extension piece body is provided with an elastic piece arranged along the axial direction of the extension piece body, and the elastic piece is provided with a positioning protrusion.
In the first technical scheme, two ends of the extension piece body are respectively provided with the flanges arranged along the length direction of the extension piece body, and two ends of the thread piece are respectively attached to the corresponding flanges.
In the first technical solution, the positioning protrusion of the elastic sheet is a circular protrusion, a square protrusion, or a triangular protrusion.
In the first technical scheme, two ends of the extension piece body are respectively provided with a guide rail assembled with the nail seat.
In the first technical solution, the rigid extension piece body is in a U-shaped sheet shape, and the rigid extension piece body is a titanium alloy part or a stainless steel part.
In order to achieve the above object, a second technical solution of the present invention is: the utility model provides a pedicle screw, includes nail seat, extension piece coupling mechanism and bulb nail, nail seat and bulb nail assembly are connected, and its innovation point lies in:
a. the two rigid extension pieces are oppositely arranged on two sides of the nail seat and are detachably connected with the nail seat through an extension piece connecting mechanism;
b. the screw thread groove is formed in the inner wall of the rigid extension piece along the length direction of the rigid extension piece, a limiting flange is arranged at the notch of the screw thread groove of the rigid extension piece, a screw thread piece is arranged in the screw thread groove of the rigid extension piece and is in sliding fit with the screw thread groove of the rigid extension piece, and the screw thread piece on the rigid extension piece is detachably connected with the screw seat through an extension piece connecting mechanism.
In the second technical scheme, the extension piece connecting mechanism comprises a connecting rod and a jackscrew, the jackscrew is arranged in the screw seat and is simultaneously in threaded connection with the thread piece and the screw seat, the connecting rod radially penetrates through the screw seat, and the connecting rod is located below the jackscrew and is abutted against the connecting rod.
In the second technical solution, one end of the rigid extension piece is provided with an elastic piece and a guide rail which are axially arranged along the elastic piece, the elastic piece is provided with a positioning protrusion, the nail seat is provided with a guide rail groove and a positioning concave pit, a guide inclined plane is arranged on the side wall of the nail seat and close to the guide rail groove, the guide rail of the rigid extension piece passes through the guide inclined plane of the nail seat and is in sliding fit with the guide rail groove, and the positioning protrusion of the elastic piece is clamped in the positioning concave pit of the nail seat.
In the second technical scheme, the ball stud reversing and positioning device further comprises a ball stud reversing and positioning mechanism arranged in the stud seat, the ball stud reversing and positioning mechanism comprises a positioning connecting sheet, a positioning clamping seat and a retaining gasket, the positioning clamping seat and the retaining gasket are located on two sides of the positioning connecting sheet, a ball head portion of the ball stud is in threaded connection with an inner spherical surface of the positioning clamping seat, a plurality of separately arranged positioning bosses are arranged on the end surface of the positioning clamping seat, the retaining gasket is provided with a positioning bayonet, the positioning clamping seat is in threaded connection with the positioning connecting sheet, the retaining gasket is clamped on the positioning connecting sheet, and the positioning bosses of the positioning clamping seat are clamped in the positioning bayonet of the retaining gasket.
The invention has the positive effects that: after the rigid extension sheet and the pedicle screw are adopted, the pedicle screw also comprises the rigid extension sheet, the two rigid extension sheets are oppositely arranged on two sides of the screw seat, and the two rigid extension sheets are detachably connected with the screw seat through the extension sheet connecting mechanism; the inner wall of the rigid extension piece along the length direction is provided with a thread piece groove, a notch of the thread piece groove of the rigid extension piece is provided with a limiting flange, a thread piece is arranged in the thread piece groove of the rigid extension piece and is in sliding fit with the thread piece groove of the rigid extension piece, and the thread piece on the rigid extension piece is detachably connected with the screw seat through an extension piece connecting mechanism;
in the process of assembling and connecting the rigid extension piece and the nail seat of the pedicle screw by adopting the structure, as the thread piece has certain displacement in the thread piece groove, the same thread lead can be adaptively adjusted in the extension piece connecting mechanism through the rigid extension piece and the critical part of the nail seat, firstly, the situation of dislocation of threads is not easy to generate, the connecting mechanism can be assembled in place, the connecting mechanism and the nail seat can be accurately connected and locked in place, and the integral fixation of the pedicle screw is ensured; secondly, the rigid extension piece and the threads on the connecting mechanism can be matched, so that the spiral line tracks of the rigid extension piece and the threads on the connecting mechanism are consistent, dislocation cannot occur, the rate of finished products is high, the production cost is effectively reduced, and the situation of dislocation of the threads cannot occur in the assembling process; thirdly, because the extension piece of the invention is a rigid extension piece, the invention replaces the technical scheme of the flexible extension piece made of plastics in the prior art, the inventor does not harm the human body in the specific operation process, when the extension piece needs to be lifted, the rigid extension piece does not distort and deform, the rigid strength is not lost, and the effects of correcting and resetting the spine of the patient are ensured.
Drawings
FIG. 1 is a schematic view of a rigid elongate member according to the present invention;
FIG. 2 is a schematic perspective view of the thread plate of FIG. 1;
FIG. 3 is a schematic perspective view of a rigid elongate member according to the present invention;
FIG. 4 is another schematic directional view of FIG. 3;
FIG. 5 is a schematic view of the pedicle screw of the invention;
FIG. 6 is a schematic sectional view A-A of FIG. 5;
FIG. 7 is an enlarged schematic view of section B of FIG. 5;
FIG. 8 is a schematic perspective view of the staple holder of FIG. 5;
FIG. 9 is a schematic perspective view of the ball stud reversing orientation mechanism of FIG. 5;
FIG. 10 is an exploded perspective view of FIG. 9;
fig. 11 is a perspective view of a pedicle screw of the invention.
Detailed Description
The invention is further illustrated, but not limited, by the following examples in connection with the accompanying drawings.
Example 1
As shown in fig. 1, 2, 3, and 4, a rigid extension piece includes an extension piece body 1 and further includes a threaded piece 2, a threaded piece groove 11 is formed on an inner wall of the extension piece body 1 along a length direction of the extension piece body, a limiting flange 12 is arranged at a notch of the threaded piece groove 11 of the extension piece body 1, the threaded piece 2 is arranged in the threaded piece groove 11, and the threaded piece 2 is in sliding fit with the threaded piece groove 11 of the extension piece body 1.
As shown in fig. 1 and 3, in order to facilitate the positioning and assembling with the nail seat, the extension piece body 1 is provided with an elastic piece 3 arranged along the axial direction thereof, and the elastic piece 3 is provided with a positioning projection 31. The elastic piece 3 and the extension piece body 1 are of an integrated structure, and the elastic piece is formed by linear cutting on the extension piece body.
As shown in fig. 3, in order to prevent the screw plate from falling off from the screw plate groove, two ends of the extension plate body 1 are respectively provided with a rib 13 arranged along the length direction thereof, and two ends of the screw plate 2 are respectively attached to the corresponding ribs 13.
The positioning protrusion 31 of the elastic sheet 3 of the present invention is a circular protrusion, a square protrusion, or a triangular protrusion. Of course, it is not limited thereto, and the positioning projection 31 of the present invention is preferably a circular projection.
As shown in fig. 3, in order to be connected with the nail seat in a positioning manner quickly and accurately, two ends of the extension piece body 1 are respectively provided with a guide rail 14 assembled with the nail seat.
In order to make the structure of the invention more reasonable and ensure the rigidity strength of the extension piece, and no distortion or strength loss occurs, the rigid extension piece body 1 is in a U-shaped sheet shape, and the rigid extension piece body 1 is a titanium alloy part or a stainless steel part. Of course, it is not limited thereto, and other types of steelwork may be employed.
Example 2
As shown in fig. 1 to 11, a pedicle screw comprises a U-shaped screw seat 4, an extension piece connecting mechanism 5 and a ball stud 6, wherein the screw seat 4 is assembled and connected with the ball stud 6,
a. the nail seat is characterized by further comprising two rigid extension pieces 1, wherein the two rigid extension pieces 1 are oppositely arranged on two sides of the nail seat 4, and the two rigid extension pieces 1 are detachably connected with the nail seat 4 through extension piece connecting mechanisms 5;
b. the utility model discloses a screw bolt, including rigidity extension piece 1, screw bolt seat 4, screw bolt seat, screw bolt, and screw bolt, and are connected and are taken up, to be connected, and are taken up, to be connected with screw bolt and to be connected with the length direction is taken up 1.
The invention has a left and a right extension pieces which are respectively inserted and arranged at two sides of the nail seat and are of an open structure, thus the invention has the advantages that: when wearing stick (connective bar), only need with between two extension pieces of connective bar disect insertion, pass subcutaneous tissue directly to get into in the staple seat, two extension pieces among the prior art are the integral type structure of C form for semi-open structure, have restricted the operation space greatly, just must not increase open area on the human body, conveniently wear the stick, so not only the operation wound of patient is big, resumes the cycle length moreover.
As shown in fig. 5 and 7, for the convenience of disassembly, the extension piece connecting mechanism 5 comprises a connecting rod 51 and a top thread 52, the top thread 52 is arranged in the nail seat 4, the top thread 52 is simultaneously in threaded connection with the thread piece 2 and the nail seat 4, the connecting rod 51 radially penetrates through the nail seat 4, and the connecting rod 51 is positioned below the top thread 52 and is abutted against the top thread 52.
Among the prior art, because be equipped with the extension section rather than each other as an organic whole on the nail seat, and the transition of extension section and nail seat body links up the department and is equipped with the opening, flexible extension piece and the extension section assembled connection of nail seat, after the operation is accomplished, utilize specialized tool to follow the extension section of opening department rupture, and flexible extension piece is taken off in the parallel connection area, and the nail seat is put and is stayed the human body, operation time has not only been increased like this, and the extension section can leave defects such as broken face or sharp blade after the nail seat rupture, this defect can produce at the postoperative and irritate, also constantly stimulate muscle recovery, lead to patient's wound to resume slowly.
Therefore, as shown in fig. 7 and 8, in order to facilitate quick positioning connection, one end of the rigid extension piece 1 is provided with the elastic piece 3 and the guide rail 14 which are arranged along the axial direction of the rigid extension piece, the elastic piece 3 is provided with the positioning protrusion 31, the nail seat 4 is provided with the guide rail groove 41 and the positioning recess 42, the side wall of the nail seat 4 is provided with the guide inclined surface 43 near the guide rail groove 41, the guide rail 14 of the rigid extension piece 1 passes through the guide inclined surface 43 of the nail seat 4 and is in sliding fit with the guide rail groove 41 thereof, and the positioning protrusion 31 of the elastic piece 3 is clamped in the positioning recess 42 of the nail seat 4.
After the structure is adopted, the nail seat can directly enter between the two extension pieces through the taking-out tool, so that the positioning bulges of the extension pieces are separated from the positioning pits of the nail seat.
As shown in fig. 5, 9 and 10, in order to facilitate unidirectional fixation and universal adjustment of the ball stud, the ball stud reversing positioning mechanism 7 is disposed in the stud seat 4, the ball stud reversing positioning mechanism 7 includes a positioning connection piece 72, and a positioning clamping seat 71 and a retaining gasket 73 which are disposed at two sides of the positioning connection piece 72, a ball head portion of the ball stud 6 is in threaded connection with an inner spherical surface of the positioning clamping seat 71, a plurality of separately disposed positioning bosses 711 are disposed on an end surface of the positioning clamping seat 71, the retaining gasket 73 is provided with a positioning bayonet 731, the positioning clamping seat 71 is in threaded connection with the positioning connection piece 72, the retaining gasket 73 is clamped on the positioning connection piece 72, and the positioning bosses 711 of the positioning clamping seat 71 are clamped in the positioning bayonets 731 of the retaining gasket 73. The retaining gasket 73 is provided with an opening to make the retaining gasket 73 have certain expansibility, so as to facilitate assembly.
The specific adjusting process of the ball stud is as follows: firstly, the ball head part of the ball stud 6 is in threaded connection with the inner spherical surface of the positioning clamping seat 71, then the positioning connecting piece 72 is screwed into the positioning clamping seat 71, and then the positioning bayonet 731 of the retaining gasket 73 is pressed on the end surface of the positioning connecting piece 72 and is assembled with the positioning boss 711 of the positioning clamping seat 71; if the ball stud 6 is in the unidirectional fixed mode, the positioning connecting piece 72 is rotated by a tool to move downwards, the inner spherical surface of the positioning connecting piece 72 abuts against the end surface of the ball head of the ball stud 6, the anti-backing gasket 73 has the anti-backing and anti-rotation functions in the process, the positioning connecting piece 72 is continuously pressurized and rotated, so that the anti-backing gasket continuously generates reaction force on the positioning clamping seat 71 until the positioning clamping seat 71 completely presses the ball head of the ball stud 6, and a fixed single-shaft state is achieved;
when the ball stud 6 needs to be converted into a universal mode, the positioning connecting piece 72 is rotated reversely by a tool to move upwards, the positioning connecting piece 72 is separated from the ball head of the ball stud 6 and abuts against the retaining gasket 73, and the ball stud 6 can rotate around the inner spherical surface of the positioning connecting piece 72 at any angle.
The structure of the rigid extension piece in example 2 is identical to that of the rigid extension piece in example 1.
The structure of the invention has the advantages that:
firstly, in the process of assembling the extension piece and the nail seat through the connecting mechanism, the situation of dislocation of screw teeth is not easy to generate, the jackscrew of the connecting mechanism can be screwed to the bottom of the U-shaped nail seat, the connecting mechanism and the nail seat can be accurately connected and locked in place, and the integral fixation of the pedicle nail is ensured;
secondly, the rigid extension piece and the threads of the jackscrew of the connecting mechanism can be matched, so that the spiral line tracks of the rigid extension piece and the jackscrew of the connecting mechanism are consistent, dislocation cannot occur, the yield is high, the production cost is effectively reduced, and the situation of dislocation of screw threads cannot occur in the assembling process;
thirdly, because the extension piece of the invention is a rigid extension piece, the invention replaces the technical scheme of the flexible extension piece made of plastic in the prior art, the inventor does not harm the human body in the specific operation process, when the extension piece needs to be lifted, the rigid extension piece does not distort and deform, the rigid strength is not lost, and the effects of correcting and resetting the spine of the patient are ensured;
fourthly, the rigid extension piece of the invention has a left piece and a right piece which are respectively inserted and arranged at the two sides of the nail seat and have an open structure, thus the invention has the advantages that: when the rod (connecting rod) is penetrated, the connecting rod is only required to be directly inserted between the two extension pieces and directly enters the U-shaped nail seat through subcutaneous tissues, the opening area is not required to be increased, and the recovery period of a patient is shortened;
fifth, the invention can directly enter between two extension pieces through the taking-out tool, so that the positioning bulges of the extension pieces are separated from the positioning pits of the nail seat.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A rigid extension piece, includes extension piece body (1), its characterized in that: still include screw thread piece (2), be equipped with screw thread piece groove (11) on extension piece body (1) along its length direction's the inner wall, and the notch department of screw thread piece groove (11) of extension piece body (1) is equipped with spacing flange (12), screw thread piece (2) are established in screw thread piece groove (11), and screw thread piece (2) and screw thread piece groove (11) sliding fit of extension piece body (1), the both ends of extension piece body (1) are equipped with flange (13) of arranging along its length direction respectively, and the both ends of screw thread piece (2) laminate with flange (13) that correspond respectively.
2. A rigid elongate member according to claim 1 wherein: the extension piece body (1) is provided with an elastic piece (3) which is arranged along the axial direction of the extension piece body, and the elastic piece (3) is provided with a positioning bulge (31).
3. A rigid elongate member according to claim 2 wherein: the positioning bulge (31) of the elastic sheet (3) is a circular bulge, a square bulge or a triangular bulge.
4. A rigid elongate member according to claim 1 wherein: and guide rails (14) assembled with the nail seats are respectively arranged at two ends of the extension piece body (1).
5. A rigid elongate member according to claim 1 wherein: the rigid extension piece body (1) is in a U-shaped sheet shape, and the rigid extension piece body (1) is a titanium alloy part or a stainless steel part.
6. The utility model provides a pedicle screw, includes nail seat (4), extension piece coupling mechanism (5) and bulb nail (6), nail seat (4) and bulb nail (6) be assembled between/be connected between, its characterized in that:
a. the nail seat is characterized by further comprising two rigid extension pieces (1), wherein the two rigid extension pieces (1) are oppositely arranged on two sides of the nail seat (4), and the two rigid extension pieces (1) are detachably connected with the nail seat (4) through extension piece connecting mechanisms (5);
b. the inner wall of the rigid extension piece (1) along the length direction is provided with a thread piece groove (11), a limiting flange (12) is arranged at the notch of the thread piece groove (11) of the rigid extension piece (1), a thread piece (2) is arranged in the thread piece groove (11) of the rigid extension piece (1), the thread piece (2) is in sliding fit with the thread piece groove (11) of the rigid extension piece (1), and the thread piece (2) on the rigid extension piece (1) is detachably connected with the nail seat (4) through an extension piece connecting mechanism (5);
c. extension piece coupling mechanism (5) are including connective bar (51) and jackscrew (52), jackscrew (52) are established in nail seat (4), and jackscrew (52) simultaneously with screw thread piece (2) and nail seat (4) threaded connection, connective bar (51) radially pass nail seat (4), and connective bar (51) are located jackscrew (52) below and offset with it.
7. A pedicle screw as claimed in claim 6, wherein: one end of the rigid extension piece (1) is provided with an elastic piece (3) and a guide rail (14) which are arranged along the axial direction of the rigid extension piece, a positioning bulge (31) is arranged on the elastic piece (3), the nail seat (4) is provided with a guide rail groove (41) and a positioning pit (42), a guide inclined plane (43) is arranged on the side wall of the nail seat (4) and close to the guide rail groove (41), the guide rail (14) of the rigid extension piece (1) is in sliding fit with the guide rail groove (41) of the nail seat (4) through the guide inclined plane (43) of the nail seat (4), and the positioning bulge (31) of the elastic piece (3) is clamped in the positioning pit (42) of the nail seat (4).
8. A pedicle screw as claimed in claim 6, wherein: still including establishing bulb nail switching-over positioning mechanism (7) in nail seat (4), bulb nail switching-over positioning mechanism (7) are including location connection piece (72) to and be located location cassette (71) and stopping gasket (73) of location connection piece (72) both sides, the bulb portion that bulb nail (6) were equipped with and the interior sphere threaded connection that location cassette (71) had, be equipped with a plurality of separately-arranged location boss (711) on the terminal surface of location cassette (71), stopping gasket (73) are equipped with location bayonet socket (731), location cassette (71) and location connection piece (72) threaded connection, stopping gasket (73) clamp on location connection piece (72), and location boss (711) of location cassette (71) clamp in location bayonet socket (731) of stopping gasket (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402512.3A CN110169815B (en) | 2019-05-15 | 2019-05-15 | Rigid extension sheet and pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910402512.3A CN110169815B (en) | 2019-05-15 | 2019-05-15 | Rigid extension sheet and pedicle screw |
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| Publication Number | Publication Date |
|---|---|
| CN110169815A CN110169815A (en) | 2019-08-27 |
| CN110169815B true CN110169815B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910402512.3A Active CN110169815B (en) | 2019-05-15 | 2019-05-15 | Rigid extension sheet and pedicle screw |
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| CN (1) | CN110169815B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113384336B (en) * | 2021-05-25 | 2023-01-13 | 上海三友医疗器械股份有限公司 | Pedicle screw extension assembly and method of use |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179912A (en) * | 2010-10-27 | 2013-06-26 | 华沙整形外科股份有限公司 | Low profile extension attachments for bone anchors |
| CN206214167U (en) * | 2016-03-22 | 2017-06-06 | 北京中安泰华科技有限公司 | A kind of backbone minimal invasion pedicle nail nail seat and extension piece draw bail |
| CN108670399A (en) * | 2018-06-13 | 2018-10-19 | 迪恩医疗科技有限公司 | The universal unidirectional unification pedicle of vertebral arch screw of vertebral column minimally invasive nails on nail system |
| CN208693415U (en) * | 2018-03-29 | 2019-04-05 | 山东威高骨科材料股份有限公司 | Pedicle screw and nail seat component applied to Minimally Invasive Surgery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9055934B2 (en) * | 2004-08-26 | 2015-06-16 | Zimmer Spine, Inc. | Methods and apparatus for access to and/or treatment of the spine |
-
2019
- 2019-05-15 CN CN201910402512.3A patent/CN110169815B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179912A (en) * | 2010-10-27 | 2013-06-26 | 华沙整形外科股份有限公司 | Low profile extension attachments for bone anchors |
| CN206214167U (en) * | 2016-03-22 | 2017-06-06 | 北京中安泰华科技有限公司 | A kind of backbone minimal invasion pedicle nail nail seat and extension piece draw bail |
| CN208693415U (en) * | 2018-03-29 | 2019-04-05 | 山东威高骨科材料股份有限公司 | Pedicle screw and nail seat component applied to Minimally Invasive Surgery |
| CN108670399A (en) * | 2018-06-13 | 2018-10-19 | 迪恩医疗科技有限公司 | The universal unidirectional unification pedicle of vertebral arch screw of vertebral column minimally invasive nails on nail system |
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| Publication number | Publication date |
|---|---|
| CN110169815A (en) | 2019-08-27 |
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