CN117503308A - Adjusting device and vertebral body fixing system - Google Patents

Adjusting device and vertebral body fixing system Download PDF

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Publication number
CN117503308A
CN117503308A CN202311746245.4A CN202311746245A CN117503308A CN 117503308 A CN117503308 A CN 117503308A CN 202311746245 A CN202311746245 A CN 202311746245A CN 117503308 A CN117503308 A CN 117503308A
Authority
CN
China
Prior art keywords
connecting rod
locking
locking member
vertebral body
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311746245.4A
Other languages
Chinese (zh)
Inventor
代亚男
马国强
吴海源
张勋
段红平
丁辰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Naton Medical Technology Holdings Co Ltd
Original Assignee
Beijing Naton Medical Technology Holdings Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Naton Medical Technology Holdings Co Ltd filed Critical Beijing Naton Medical Technology Holdings Co Ltd
Priority to CN202311746245.4A priority Critical patent/CN117503308A/en
Publication of CN117503308A publication Critical patent/CN117503308A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7014—Longitudinal elements, e.g. rods with means for adjusting the distance between two screws or hooks
    • 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
    • A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
    • 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
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4625—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use

Abstract

The invention relates to an adjustment device and a vertebral body fixation system, the adjustment device comprising: the first connecting assembly comprises a connecting rod and a first locking component, the connecting rod extends along a first direction, the first locking component is arranged on the connecting rod and is suitable for being connected with an artificial vertebral body, the second connecting assembly comprises a connecting frame and a second locking component, the connecting frame is arranged on the connecting rod, the connecting rod is located along the first direction relatively to the position of the connecting frame is adjustable, the second locking component is arranged on the connecting frame, the connecting frame is located along a second direction relatively to the position of the second locking component, the second locking component is suitable for being connected with a connecting rod, and the first direction, the second direction and the extending direction of the connecting rod are two-by-two orthogonal.

Description

Adjusting device and vertebral body fixing system
Technical Field
The invention relates to the technical field of medical instruments, in particular to an adjusting device and a vertebral body fixing system.
Background
In the treatment of human spinal disorders, spinal nerve damage may result from spinal column tumor, tuberculosis and severe fracture often causing vertebral body destruction, and a vertebrotomy has to be performed, after which a vertebral body replacement implant is used to maintain normal spinal loading and physiological curvature. To improve the stability of the spine, the risk of implant failure of the artificial vertebral body is reduced, and a nail rod system is usually additionally implanted while the artificial vertebral body is installed to improve the stability in early stage and in the period of bone fusion.
In the related art, when a doctor implants an artificial vertebral body in an operation, the implantation position of the artificial vertebral body is easy to deviate, the doctor is required to readjust the artificial vertebral body to an optimal position for a plurality of times, and then the connector is mounted on the corresponding artificial vertebral body and the connecting rod, but the position adjustment of the artificial vertebral body in the operation scheme is inconvenient, the operation time is long, and the operation risk is increased.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the invention provides the adjusting device which can conveniently adjust the position of the artificial vertebral body, is beneficial to shortening the operation time and reducing the operation risk.
The embodiment of the invention also provides a vertebral body fixing system.
The adjusting device of the embodiment of the invention comprises: the first connecting assembly comprises a connecting rod and a first locking component, the connecting rod extends along a first direction, and the first locking component is arranged on the connecting rod and is suitable for being connected with an artificial vertebral body; the second coupling assembling, the second coupling assembling includes link and second locking part, the link set up in on the connecting rod, the connecting rod is followed the first direction is relative the position adjustable of link, the second locking part is located on the link, the link is followed the second direction is relative the position adjustable of second locking part, the second locking part is suitable for linking to each other with the connective bar, the first direction the second direction with the extending direction of connective bar is two liang orthogonal.
According to the adjusting device provided by the embodiment of the invention, when an implantation operation of an artificial vertebral body is performed, the first locking component can be connected with the artificial vertebral body, the second locking component is connected with the connecting rod, and when the implantation position of the artificial vertebral body is deviated, the second locking component is relatively fixed with the connecting rod, so that the connecting frame can be subjected to position adjustment along a second direction relative to the second locking component, and the connecting rod can push the artificial vertebral body to move along the second direction; and because the position of the connecting rod along the first direction relative to the connecting frame is adjustable, the artificial vertebral body can be driven to move along the first direction. Therefore, the adjusting device provided by the embodiment of the invention can assist a doctor to complete the position adjustment of the artificial vertebral body in the first direction and the second direction, so that the time for implanting the artificial vertebral body by the doctor is shortened, and the operation risk is reduced.
In some embodiments, the second connecting assembly further comprises a rotating member, the rotating member is disposed on the connecting rod, the position of the connecting rod relative to the rotating member along the first direction is adjustable, the connecting frame is connected with the rotating member, and the connecting frame is rotatable around the circumference of the connecting rod relative to the rotating member.
In some embodiments, the rotating member is sleeved on the connecting rod and is in threaded fit with the connecting rod; and/or, the connecting frame is provided with an installation cavity, the rotating piece is arranged in the installation cavity, the inner wall of the installation cavity is provided with a limit groove, the periphery of the rotating piece is provided with a flange, the flange is matched in the limit groove, and the flange is rotatable relative to the limit groove along the circumferential direction of the connecting rod.
In some embodiments, the first locking component includes a connecting hook and a first locking member, the connecting hook is disposed on the connecting rod, a first clamping cavity is disposed in the connecting hook, the artificial vertebral body has a fixing portion, the fixing portion is disposed through the first clamping cavity, and the first locking member extends into the first clamping cavity and is adjustable in position relative to the first clamping cavity.
In some embodiments, a cavity is formed in the connecting rod, the cavity penetrates through the connecting rod along the axial direction of the connecting rod, the connecting hook is arranged at the end part of the connecting rod, and part of the first locking piece is arranged in the cavity and is adjustable along the axial direction of the connecting rod relative to the position of the connecting rod.
In some embodiments, the first locking member includes a locking block and a compression bar, the locking block is in threaded fit with an inner wall of the cavity, the compression bar is disposed through the connecting hook, one end of the compression bar abuts against the locking block, and the other end of the compression bar extends into the first clamping cavity.
In some embodiments, the second locking member comprises a connection block and a second locking member, the connection block is used for connecting the connection rod, the connection frame is provided with a sliding section, the sliding section penetrates through the connection block along the second direction, the second locking member is arranged on the connection block and connected with the sliding section, and the second locking member is used for adjusting the relative position of the connection block and the sliding section.
In some embodiments, the second locking member has a gear portion, and the side wall of the slip segment is provided with a rack portion, and the gear portion is rotatable relative to the rack portion and is engaged with the rack portion.
In some embodiments, the second locking component further includes a third locking member, a second clamping cavity is formed in the connecting block, the connecting rod is arranged in the second clamping cavity in a penetrating mode, and the third locking member extends into the second clamping cavity and is adjustable in position relative to the second clamping cavity.
Another embodiment of the present invention provides a vertebral body fixation system comprising: an adjustment device, which is an adjustment device according to any one of the embodiments of the present invention; an artificial vertebral body, the artificial vertebral body being connected to the first locking member; and the connecting rod is connected with the second locking part.
According to the vertebral body fixing system provided by the embodiment of the invention, when an implantation operation of an artificial vertebral body is performed, the first locking component can be connected with the artificial vertebral body, the second locking component is connected with the connecting rod, and when the implantation position of the artificial vertebral body is deviated, the second locking component is relatively fixed with the connecting rod, so that the connecting frame can be subjected to position adjustment along the second direction relative to the second locking component, and the connecting rod can push the artificial vertebral body to move along the second direction; and because the position of the connecting rod along the first direction relative to the connecting frame is adjustable, the artificial vertebral body can be driven to move along the first direction. Therefore, the adjusting device of the vertebral body fixing system can assist a doctor to complete the position adjustment of the artificial vertebral body in the first direction and the second direction, so that the time for implanting the artificial vertebral body by the doctor is shortened, and the operation risk is reduced.
Drawings
FIG. 1 is a schematic view of a vertebral body fixation system according to an embodiment of the present invention.
Fig. 2 is a schematic view of an adjusting device according to an embodiment of the present invention.
Fig. 3 is a side view of an adjustment device according to an embodiment of the invention.
Fig. 4 is a cross-sectional view of A-A in fig. 3.
Fig. 5 is a partial schematic view of an adjusting device according to an embodiment of the present invention.
Reference numerals:
1. a first connection assembly; 11. a connecting rod; 111. a cavity; 12. a first locking member; 121. a connecting hook; 1211. the first clamping cavity; 122. a first locking member; 1221. a locking block; 12211. hexagonal holes; 1222. a compression bar;
2. a second connection assembly; 21. a connecting frame; 211. a mounting cavity; 212. a limit groove; 213. a slip segment; 2131. a rack portion; 22. a second locking member; 221. a connecting block; 2211. the second clamping cavity; 222. a second locking member; 2221. an operation unit; 2222. a gear portion; 23. a rotating member; 231. a flange; 232. a hexagonal mating surface; 24. a third locking member;
3. an artificial vertebral body; 31. a fixing part;
4. and (5) connecting a rod.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
An adjustment device and a vertebral body fixation system according to an embodiment of the present invention are described below with reference to fig. 1-5.
As shown in fig. 1 and 2, the adjusting device according to the embodiment of the present invention includes: a first connection assembly 1 and a second connection assembly 2, the first connection assembly 1 comprising a connection rod 11 and a first locking member 12, the second connection assembly 2 comprising a connection frame 21 and a second locking member 22.
The connecting rod 11 extends in a first direction (up and down in fig. 4), and a first locking member 12 is provided on the connecting rod 11 and is adapted to be coupled to the artificial vertebral body 3. The connecting frame 21 is arranged on the connecting rod 11, the position of the connecting rod 11 relative to the connecting frame 21 along a first direction is adjustable, the second locking part 22 is arranged on the connecting frame 21, the position of the connecting frame 21 relative to the second locking part 22 along a second direction (such as the left-right direction of fig. 4) is adjustable, the second locking part 22 is suitable for being connected with the connecting rod 4, and the first direction, the second direction and the extending direction of the connecting rod 4 are orthogonal.
It will be appreciated that the connecting rod 4 has been locked by pedicle screws (not shown) at the time of implantation of the artificial vertebral body 3, i.e. the connecting rod 4 is fixed relative to the vertebrae of the human body, whereby the adjustment device can be used for the position adjustment of the artificial vertebral body 3 by means of the connecting rod 4 as a fulcrum of the stress.
According to the adjusting device of the embodiment of the present invention, the first locking member 12 may be coupled to the artificial vertebral body 3 and the second locking member 22 may be coupled to the connecting rod 4 during the implantation operation of the artificial vertebral body 3. When the implantation position of the artificial vertebral body 3 deviates, the second locking part 22 is relatively fixed with the connecting rod 4, and the connecting frame 21 can adjust the position along the second direction relative to the second locking part 22, so that the connecting frame 21 can drive the connecting rod 11 and the first locking part 12 to move along the second direction to push the artificial vertebral body 3 to move along the second direction. And since the position of the connecting rod 11 in the first direction with respect to the connecting frame 21 is adjustable, the connecting rod 11 can push the artificial vertebral body 3 to move in the first direction by the first locking part 12.
In other words, the doctor can adjust the relative positions of the link 21 and the second locking member 22 and the relative positions of the link 21 and the link lever 11 so that the artificial vertebral body 3 can be adjusted in the up-down-left-right direction. Therefore, the adjusting device of the embodiment of the invention can assist a doctor to complete the position adjustment of the artificial vertebral body 3 in the first direction and the second direction, so as to shorten the time for the doctor to implant the artificial vertebral body 3 and reduce the operation risk.
Alternatively, as shown in fig. 2, 4 and 5, the second connecting assembly 2 further includes a rotating member 23, the rotating member 23 is disposed on the connecting rod 11, the position of the connecting rod 11 relative to the rotating member 23 along the first direction is adjustable, the connecting frame 21 is connected to the rotating member 23, and the connecting frame 21 is rotatable about the circumference of the connecting rod 11 relative to the rotating member 23. It will be appreciated that the connecting frame 21 is connected to the connecting rod 11 by a swivel 23. The connecting frame 21 can rotate around the relative rotation piece 23 in the circumferential direction of the connecting rod 11, so that the angles of the first locking part 12 and the second locking part 22 along the circumferential direction of the connecting rod 11 can be changed, the adjusting device can fix the artificial vertebral bodies 3 with different angles and the connecting rods 4 with different angles, and the application range of the adjusting device is enlarged.
In an example, as shown in fig. 2, 4 and 5, the rotating member 23 is sleeved on the connecting rod 11 and is in threaded fit with the connecting rod 11, it is understood that the rotating member 23 is in a sleeve structure, the rotating member 23 is sleeved on the connecting member and is in threaded connection with the connecting rod 11, and when the height of the artificial vertebral body 3 needs to be adjusted in the up-down direction, a doctor can rotate the rotating member 23, and at this time, the connecting rod 11 will move in the up-down direction to raise or lower the artificial vertebral body 3. The adjusting device of the embodiment of the invention can be conveniently manufactured by arranging the rotating member 23 and the connecting rod 11 in the structure, and has simple adjusting mode and convenient operation.
For example, as shown in fig. 5, the outer wall surface of the rotating member 23 is provided with a corresponding hexagonal mating surface 232, and a doctor may fit a special tool over the hexagonal mating surface 232 so that the doctor screws the rotating member 23.
Alternatively, as shown in fig. 5, the connecting frame 21 has a mounting cavity 211, the rotating member 23 is disposed in the mounting cavity 211, a limiting groove 212 is disposed on an inner wall of the mounting cavity 211, a flange 231 is disposed on an outer periphery of the rotating member 23, the flange 231 is fitted in the limiting groove 212, and the flange 231 is rotatable relative to the limiting groove 212 along a circumferential direction of the connecting rod 11. It will be appreciated that the flange 231 is disposed around the outer side Zhou Bibu of the rotating member 23, the flange 231 is rotatably fitted in the limit groove 212, and the limit groove 212 can limit the flange 231 in the up-down direction.
Since the flange 231 can rotate along the circumferential direction of the connecting rod 11 relative to the limit groove 212, when the doctor operates the rotating member 23 to rotate relative to the connecting rod 11, the connecting frame 21 is not caused to synchronously rotate, and the connecting frame 21 does not interfere with the rotation of the rotating member 23, so that the adjusting process of the adjusting device is smoother. In this embodiment, one end of the mounting cavity 211 is in an open structure so that the connecting frame 21 is in a U-shaped structure with one end open, the limiting groove 212 is disposed on the inner wall of the U-shaped structure, and the notch extends to the opening, so that the flange 231 can slide into the limiting groove 212 along the opening when the rotating member 23 is mounted, and the operation is simple and convenient. In other embodiments, a stop may be provided at the opening to prevent the rotation member 23 from sliding out of the mounting cavity 211, and the stop may be a bolt or the like.
In some embodiments, as shown in fig. 2 to 4, the first locking component 12 includes a connecting hook 121 and a first locking member 122, the connecting hook 121 is disposed on the connecting rod 11, a first clamping cavity 1211 is disposed in the connecting hook 121, the artificial vertebral body 3 has a fixing portion 31, the fixing portion 31 is disposed through the first clamping cavity 1211, and the first locking member 122 extends into the first clamping cavity 1211 and is adjustable in position relative to the first clamping cavity 1211. It will be appreciated that the position of first locking member 122 relative to first clamping chamber 1211 is adjustable to adjust the distance first locking member 122 extends into first clamping chamber 1211.
When the adjusting device needs to be locked with the artificial vertebral body 3, the doctor can drive the first locking member 122 to move towards the inside of the first clamping cavity 1211, so that the first locking member 122 abuts against the fixing portion 31 in the first clamping cavity 1211. When it is desired to separate the adjustment device from the artificial vertebral body 3, the physician can actuate the first retaining member 122 to move in a direction away from the first clamping chamber 1211 such that the first retaining member 122 is spaced from the securing portion 31 within the first clamping chamber 1211. The adjusting device and the artificial vertebral body 3 are connected in the mode, the structure is simple, loosening is not easy to occur, and the stability of connection of the adjusting device and the artificial vertebral body 3 is improved.
Optionally, as shown in fig. 2 and fig. 4, a cavity 111 is disposed in the connecting rod 11, the cavity 111 penetrates the connecting rod 11 along the axial direction of the connecting rod 11, the connecting hook 121 is disposed at an end portion of the connecting rod 11, and a part of the first locking member 122 is disposed in the cavity 111 and is adjustable in position relative to the connecting rod 11 along the axial direction of the connecting rod 11. It can be appreciated that the first locking member 122 is disposed through the cavity 111 along the up-down direction, and the lower end of the first locking member 122 extends into the first clamping cavity 1211. According to the adjusting device provided by the embodiment of the invention, the first locking piece 122 is arranged in the cavity 111, so that the structure of the adjusting device is more compact, the occupied space of the adjusting device is reduced, and the implantation effect of the adjusting device is improved.
In an example, as shown in fig. 4, the first locking member 122 includes a locking block 1221 and a pressing rod 1222, the locking block 1221 is in threaded engagement with an inner wall of the cavity 111, the pressing rod 1222 is disposed through the connecting hook 121, one end of the pressing rod 1222 abuts against the locking block 1221, and the other end of the pressing rod 1222 extends into the first clamping cavity 1211. Specifically, the inner wall of the cavity 111 is provided with an internal thread, the outer wall of the locking block 1221 is provided with an external thread, and the locking block 1221 is screw-engaged with the cavity 111, thereby driving the pressing lever 1222 to move downward. In order to facilitate the doctor to screw the locking block 1221, a hexagonal hole 12211 or a quincuncial hole may be provided at the upper end of the locking block 1221, so that the doctor screws the locking block 1221 through a special tool.
It will be appreciated that when the fixing portion 31 is required to be locked, the doctor can engage the coupling hook 121 on the fixing portion 31 and then screw the locking block 1221 downwardly by penetrating the cavity 111 downwardly with a special tool to slide the pressing lever 1222 downwardly and tightly against the fixing portion 31, thereby restricting the movement of the coupling hook 121 relative to the fixing portion 31.
For example, as shown in fig. 4, the lower end of the locking block 1221 has a spherical surface, and the upper end of the lever 1222 has a spherical surface, i.e., the lower end of the locking block 1221 and the upper end of the lever 1222 are abutted in a point contact manner, whereby friction force when the locking block 1221 rotates can be reduced, and smoothness when the locking block 1221 rotates can be improved.
In some embodiments, as shown in fig. 1, 4 and 5, the second locking member 22 includes a connection block 221 and a second locking member 222, the connection block 221 is used for connecting the connection rod 4, the connection frame 21 has a sliding section 213, the sliding section 213 is penetrated through the connection block 221 along the second direction, the second locking member 222 is disposed on the connection block 221 and connected with the sliding section 213, and the second locking member 222 is used for adjusting the relative position of the connection block 221 and the sliding section 213. It will be appreciated that the connection block 221 is movable relative to the sliding section 213 along the second direction, and after the connection block 221 is connected to the connection rod 4, the connection block 221 is kept stationary, and the doctor can operate the second locking member 222 to slide the sliding section 213 along the second direction, so as to adjust the position of the connection frame 21 along the second direction (left-right direction), and further control the left-right movement of the artificial vertebral body 3.
For example, the second locking member 222 is a bolt, and the second locking member 222 is inserted through the connection block 221 and abuts against the sliding section 213, so that the doctor can screw the second locking member 222 to lock and release the sliding section 213.
As another example, as shown in fig. 4 and 5, the second locking member 222 has a gear portion 2222, and the side wall of the slide segment 213 is provided with a rack portion 2131, and the gear portion 2222 is rotatable relative to the rack portion 2131 and is engaged with the rack portion 2131. It can be appreciated that the second locking member 222 is disposed through the connecting block 221 along the first direction, and the operating portion 2221 is disposed at the upper end of the second locking member 222, so that a doctor can conveniently rotate the operating portion 2221 to rotate the gear portion 2222 circumferentially around the operating portion, and the gear portion 2222 drives the rack portion 2131 to translate, so as to slide the connecting frame 21 along the second direction.
Optionally, as shown in fig. 5, the second locking member 22 further includes a third locking member 24, the connecting block 221 is provided with a second clamping cavity 2211, the connecting rod 4 is disposed through the second clamping cavity 2211, and the third locking member 24 extends into the second clamping cavity 2211 and is adjustable in position relative to the second clamping cavity 2211. It can be appreciated that the second clamping cavity 2211 penetrates the connection block 221 along the circumferential direction of the connection rod 4, and one side of the second clamping cavity 2211 along the second direction is provided with an opening so as to clamp the connection rod 4 into the second clamping cavity 2211, and the distance that the third locking member 24 extends into the second clamping cavity 2211 is adjustable, so that the connection rod 4 can be locked and released.
For example, as shown in fig. 5, the third locking member 24 is a threaded member, and penetrates into the second clamping cavity 2211 from top to bottom, and the third locking member 24 is provided with an inner operation hole, so that a doctor can screw the third locking member 24 by using a tool. Therefore, the axial directions of the rotating member 23, the first locking member 122, the second locking member 222 and the third locking member 24 are all arranged along the vertical direction, so that a doctor can conveniently adjust and screw the rotating member 23, the first locking member 122, the second locking member 222 and the third locking member 24 respectively, the surgical field of the doctor is better, and the surgical time is shortened.
As shown in fig. 1, a vertebral body fixation system according to another embodiment of the present invention includes: an adjusting device, an artificial vertebral body 3 and a connecting rod 4. The adjusting device is an adjusting device of the invention, the artificial vertebral body 3 is clamped with the first clamping cavity 1211 on the connecting hook 121, and the connecting rod 4 is clamped with the second clamping cavity 2211 on the connecting block 221.
According to the vertebral body fixing system of the embodiment of the invention, when an implantation operation of the artificial vertebral body 3 is performed, the first locking part 12 can be connected with the artificial vertebral body 3, the second locking part 22 is connected with the connecting rod 4, and when the implantation position of the artificial vertebral body 3 is deviated, the second locking part 22 is relatively fixed with the connecting rod 4, so that the connecting frame 21 can be adjusted relative to the second locking part 22 along the second direction, and the connecting rod 11 can push the artificial vertebral body 3 to move along the second direction; and because the position of the connecting rod 11 relative to the connecting frame 21 along the first direction is adjustable, the artificial vertebral body 3 can be driven to move along the first direction. Therefore, the adjusting device of the vertebral body fixing system of the embodiment of the invention can assist a doctor to complete the position adjustment of the artificial vertebral body 3 in the first direction and the second direction, so as to shorten the time for the doctor to implant the artificial vertebral body 3 and reduce the operation risk.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.

Claims (10)

1. An adjustment device, comprising:
the first connecting assembly comprises a connecting rod and a first locking component, the connecting rod extends along a first direction, and the first locking component is arranged on the connecting rod and is suitable for being connected with an artificial vertebral body;
the second coupling assembling, the second coupling assembling includes link and second locking part, the link set up in on the connecting rod, the connecting rod is followed the first direction is relative the position adjustable of link, the second locking part is located on the link, the link is followed the second direction is relative the position adjustable of second locking part, the second locking part is suitable for linking to each other with the connective bar, the first direction the second direction with the extending direction of connective bar is two liang orthogonal.
2. The adjustment device of claim 1, wherein the second connection assembly further comprises a rotating member disposed on the connecting rod, the position of the connecting rod relative to the rotating member in the first direction is adjustable, the connecting frame is connected to the rotating member, and the connecting frame is rotatable relative to the rotating member about a circumference of the connecting rod.
3. The adjusting device according to claim 2, wherein the rotating member is sleeved on the connecting rod and is in threaded fit with the connecting rod;
and/or, the connecting frame is provided with an installation cavity, the rotating piece is arranged in the installation cavity, the inner wall of the installation cavity is provided with a limit groove, the periphery of the rotating piece is provided with a flange, the flange is matched in the limit groove, and the flange is rotatable relative to the limit groove along the circumferential direction of the connecting rod.
4. The adjusting device of claim 1, wherein the first locking member comprises a connecting hook and a first locking member, the connecting hook is arranged on the connecting rod, a first clamping cavity is arranged in the connecting hook, the artificial vertebral body is provided with a fixing part, the fixing part penetrates through the first clamping cavity, and the first locking member stretches into the first clamping cavity and is adjustable in position relative to the first clamping cavity.
5. The adjusting device of claim 4, wherein a cavity is formed in the connecting rod, the cavity penetrates through the connecting rod along the axial direction of the connecting rod, the connecting hook is arranged at the end part of the connecting rod, and part of the first locking piece is arranged in the cavity and is adjustable in position relative to the connecting rod along the axial direction of the connecting rod.
6. The adjusting device of claim 5, wherein the first locking member comprises a locking block and a pressing rod, the locking block is in threaded fit with the inner wall of the cavity, the pressing rod is arranged in the connecting hook in a penetrating mode, one end of the pressing rod abuts against the locking block, and the other end of the pressing rod extends into the first clamping cavity.
7. The adjustment device of claim 1, wherein the second locking member comprises a connection block and a second locking member, the connection block is used for connecting the connection rod, the connection frame has a sliding section, the sliding section is arranged on the connection block in a penetrating manner along the second direction, the second locking member is arranged on the connection block and connected with the sliding section, and the second locking member is used for adjusting the relative position of the connection block and the sliding section.
8. The adjustment device of claim 7, wherein the second locking member has a gear portion, and the side wall of the slip segment is provided with a rack portion, the gear portion being rotatable relative to and in engagement with the rack portion.
9. The adjusting device of claim 7, wherein the second locking member further comprises a third locking member, a second clamping cavity is formed in the connecting block, the connecting rod is arranged in the second clamping cavity in a penetrating mode, and the third locking member extends into the second clamping cavity and is adjustable in position relative to the second clamping cavity.
10. A vertebral body fixation system, comprising:
an adjustment device according to any one of claims 1-9;
an artificial vertebral body, the artificial vertebral body being connected to the first locking member;
and the connecting rod is connected with the second locking part.
CN202311746245.4A 2023-12-18 2023-12-18 Adjusting device and vertebral body fixing system Pending CN117503308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311746245.4A CN117503308A (en) 2023-12-18 2023-12-18 Adjusting device and vertebral body fixing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311746245.4A CN117503308A (en) 2023-12-18 2023-12-18 Adjusting device and vertebral body fixing system

Publications (1)

Publication Number Publication Date
CN117503308A true CN117503308A (en) 2024-02-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311746245.4A Pending CN117503308A (en) 2023-12-18 2023-12-18 Adjusting device and vertebral body fixing system

Country Status (1)

Country Link
CN (1) CN117503308A (en)

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