CN111317598B - Vertebral body repair assembly - Google Patents

Vertebral body repair assembly Download PDF

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Publication number
CN111317598B
CN111317598B CN202010124270.9A CN202010124270A CN111317598B CN 111317598 B CN111317598 B CN 111317598B CN 202010124270 A CN202010124270 A CN 202010124270A CN 111317598 B CN111317598 B CN 111317598B
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China
Prior art keywords
bag
vertebral body
spinal
assembly
rod
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.)
Active
Application number
CN202010124270.9A
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Chinese (zh)
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CN111317598A (en
Inventor
张为
李严
黎庆初
杨强
孙亚鹏
李佳奇
张飞
郭磊
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Third Hospital of Hebei Medical University
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Third Hospital of Hebei Medical University
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Application filed by Third Hospital of Hebei Medical University filed Critical Third Hospital of Hebei Medical University
Priority to CN202010124270.9A priority Critical patent/CN111317598B/en
Publication of CN111317598A publication Critical patent/CN111317598A/en
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Publication of CN111317598B publication Critical patent/CN111317598B/en
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Classifications

    • 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
    • A61F2/441—Joints for the spine, e.g. vertebrae, spinal discs made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
    • 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
    • A61B17/7094—Solid vertebral fillers; devices for inserting such fillers
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes

Abstract

The invention provides a vertebral body repairing assembly, which belongs to the field of spinal column repairing and comprises a flexible or shapeable accommodating bag and a connecting structure. The receiving bag is used for receiving filler and has a hole for fusing the filler inside with the outer vertebral body. The connecting structure is used for connecting the accommodating bag with the spinal nail rod assembly. After the connecting structure connects the containing bag with the spinal nail rod component fixed on the spinal column, the containing bag is fixed on the surface defect of the vertebral body of the spinal column by the spinal nail rod component. The vertebral body repairing assembly can realize the repair of the surface defect of the vertebral body in the operation needing to implant the spinal nail rod assembly, and fills the technical blank. Utilize and hold the bag and mould into the shape of centrum surface defect part with the filler, then be connected through connection structure and backbone nail stick subassembly, will hold the bag and fix the surface defect department at the centrum, the centrum fuses with the filler through the hole that holds on the bag, makes the surface defect department of centrum restore, and is simple and convenient to use, and the operation effect is better.

Description

Vertebral body repair assembly
Technical Field
The invention belongs to the technical field of spine repair, and particularly relates to a vertebral body repair assembly.
Background
In spinal surgery, structures such as vertebral plates, spinous processes, facet joints and the like on the surface of a vertebral body are often damaged, and after the structures are damaged, a good restoration means is not provided at present, and usually, the repair is not performed, but the best surgical effect is difficult to achieve without the repair. If the traditional bone repair method is adopted, the steel plate or other substitutes are implanted for repair, and the damaged structure is smaller and is positioned on the surface of the vertebral body, so that the steel plate or other substitutes are difficult to fix with the vertebral body, the shape of the damaged part is difficult to restore, and the optimal operation effect is difficult to achieve.
Disclosure of Invention
The invention aims to provide a vertebral body repairing assembly to solve the technical problem that in the prior art, the spinous process, the facet joint and other structures on the surface of a vertebral body cannot be repaired in a spinal surgery.
In order to achieve the above object, the present invention adopts a technical solution in which a vertebral body repair assembly is provided, comprising:
a flexible or shapeable containment bag for containing a filling material, having a cavity for fusing the filling material inside with an external vertebral body; and
the connecting structure is used for connecting the accommodating bag with the spinal nail rod assembly;
after the connecting structure connects the containing bag with the spinal nail rod component fixed on the spinal column, the containing bag is fixed on the surface defect of the spinal vertebral body by the spinal nail rod component.
As another embodiment of the present application, the connection structure is a detachable structure.
As another embodiment of the present application, the connection structure includes a connection member; the first end of connecting piece with hold the bag and connect, the connecting piece second end is equipped with and is used for holding the local spread groove of spinal nail stick subassembly, spread groove opening part threaded connection has the jackscrew, the jackscrew be used for with the local of spinal nail stick subassembly compress tightly in the spread groove.
As another embodiment of the application, the connecting groove is used for accommodating a fixing rod of the spinal nail rod assembly, and the jackscrew is used for compressing the fixing rod in the connecting groove.
As another embodiment of the present application, the first end of the connecting member is hooked to the receiving bag by a hook.
As another embodiment of the present application, the hook is rotatably disposed at the first end of the connecting part, and includes a hook portion located outside the connecting part and a rod portion connected to the hook portion and located inside the connecting groove;
the rod part is used for being locally pushed by the spinal nail rod assembly placed in the connecting groove, so that the hook part and the accommodating bag are hooked, and then the opening is attached to the outside of the connecting piece.
As another embodiment of the present application, the rod portion is a bendable elastic member, one end of the rod portion is rotatably connected to the bottom of the connecting groove, and the other end of the rod portion abuts against the side wall of the connecting groove; the rod part is used for being elastically bent after being locally extruded by the spinal nail rod assembly placed in the connecting groove so as to pry the hook part to enable the opening of the hook part to be attached to the outside of the connecting piece.
As another embodiment of the present application, a filling opening is disposed on a side of the receiving bag away from the connecting structure, and the filling opening is a retractable structure.
As another embodiment of the present application, the containment bag is an absorbable member.
As another embodiment of the present application, the receiving bag is a mesh bag, and the holes are meshes of the mesh bag.
The vertebral body repairing assembly provided by the embodiment of the invention has the beneficial effects that: compared with the prior art, the vertebral body repairing assembly provided by the embodiment of the invention can realize the repair of the vertebral body surface defect in the operation needing to implant the spinal nail rod assembly, and fills the technical blank. The method comprises the following steps of (1) containing filler by using a flexible or shapeable containing bag, wherein the filler can be shaped into the shape of a surface defect part of a vertebral body in an operation, and then connecting the containing bag with a spinal nail rod assembly by using a connecting structure, so that the containing bag is fixed at the surface defect part of the vertebral body by the spinal nail rod assembly; as the vertebral body grows, the vertebral body is fused with the filler through the hole on the containing bag, thereby repairing the surface defect of the vertebral body. The accommodating bag for accommodating the filler does not need to be directly fixed with the vertebral body, and the fixing operation is simple and convenient; and the shape of the surface defect part of the vertebral body can be reduced as much as possible by shaping the filler, so that a better operation effect is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic view of a vertebral body repair assembly according to an embodiment of the present invention in use;
FIG. 2 is a front view of a containment bag and attachment structure in a vertebral body repair assembly according to an embodiment of the present invention;
FIG. 3 is a front view of a receiving pocket and connecting structure in a vertebral body repair assembly according to another embodiment of the present invention;
fig. 4 is a schematic view of the vertebral body repair assembly of fig. 3 connected to a spinal rod assembly.
Wherein, in the figures, the respective reference numerals:
1-a containment bag; 11-a filling port; 2-a linking structure; 21-a connector; 22-a connecting trough; 23-top thread; 24-hook; 241-a hook portion; 242-a stem portion; 3-spinal nail-rod assembly; 31-a fixed bar; 32-pedicle screws; 4-vertebral body.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-4, a vertebral body repair assembly according to an embodiment of the present invention will now be described. A vertebral body repair assembly comprising: a flexible or shapeable receiving bag 1 and a connecting structure 2.
The flexible or shapeable receiving bag 1 is used for receiving filling material and has a cavity for fusing the filling material inside with the outer vertebral body 4. The connecting structure 2 is used for connecting the accommodating bag 1 with the spinal nail-bar assembly 3. After the connecting structure 2 connects the containing bag 1 with the spinal nail rod component 3 fixed on the spinal column, the containing bag 1 is fixed on the surface defect of the spinal vertebral body 4 by the spinal nail rod component 3.
Compared with the prior art, the vertebral body repairing assembly provided by the embodiment of the invention can realize the repair of the surface defect of the vertebral body 4 in the operation needing to implant the spinal nail rod assembly 3, and fills the technical blank. The flexible or shapeable containing bag 1 is used for containing the filler, the filler can be shaped into the shape of the surface defect part of the vertebral body 4 in the operation, and then the containing bag 1 is connected with the spinal nail and rod assembly 3 by the connecting structure 2, so that the containing bag 1 is fixed at the surface defect part of the vertebral body 4 by the spinal nail and rod assembly 3; as the vertebral body 4 grows, the vertebral body 4 is fused with filler through the hole in the containment bag 1, thereby repairing the surface defect of the vertebral body 4. The accommodating bag 1 for accommodating the filler does not need to be directly fixed with the vertebral body 4, and the fixing operation is simple and convenient; and the shape of the surface defect part of the vertebral body 4 can be reduced as much as possible by shaping the filler, so that a better operation effect is achieved.
In this embodiment, the containing bag 1 is shapeable, which means that the containing bag 1 can be bent and shaped by an operator. The containing bag 1 may be a mesh bag, specifically, a shapeable mesh bag of a non-absorbable material or an absorbable material, or a soft mesh bag of a non-absorbable material or an absorbable material. More specifically, the containment bag 1 may be a titanium alloy mesh bag, or a mesh bag made of an absorbable film. When the containing bag 1 is made of the absorbable film, a plurality of holes are formed on the absorbable film, so that the vertebral body 4 outside the containing bag 1 is fused with the filler inside the containing bag 1 through the holes. The filler may be autologous bone granules of the patient or other granular bone fusion materials, or may be a moldable bone fusion material mixed with bone cement or the like. After filling the filling material into the receiving bag 1, the filling material can be shaped into the shape of the surface defect portion of the vertebral body 4 by the plasticity of the receiving bag 1 or the plasticity of the filling material.
In this embodiment, the connection structure 2 may be used to fixedly connect the accommodating bag 1 and the spinal nail rod assembly 3, or may be used to detachably connect the accommodating bag 1 and the spinal nail rod assembly 3. The spinal screw-rod assembly 3 may be the same as a general spinal screw-rod assembly 3, and may include a fixing rod 31 and a pedicle screw 32, and the connection structure 2 connects the receiving bag 1 with the fixing rod 31 or the pedicle screw 32. In the operation of spine nail stick subassembly 3 needs to be implanted, with the fixed back of spine nail stick subassembly 3 and patient's backbone, spine nail stick subassembly 3 will be equipped with the filler and the plastic bag 1 that holds of back fixes in the surface defect department of centrum 4 through connection structure 2, after a period, centrum 4 fuses with the filler through the hole that holds bag 1, realizes the restoration of centrum 4 surface defect department, reaches better operation effect.
Referring to fig. 1 to 4, as an embodiment of the vertebral body repair assembly according to the present invention, the connecting structure 2 is a detachable structure. By adopting the structure, the containing bag 1 and the spinal nail rod component 3 can be conveniently connected and separated, and the operation during the operation is convenient.
In this embodiment, the connection structure 2 may be a detachable structure in a snap-fit form or a screw thread form. In the operation of spinal nail stick subassembly 3 is implanted to needs, can be earlier with spinal nail stick subassembly 3 with the fixed back of patient's backbone, will be equipped with the filler hold bag 1 moulding back and arrange the surface defect department of centrum 4 in, later will hold bag 1 and spinal nail stick subassembly 3 fixed through connection structure 2, make and hold bag 1 and fix the surface defect department at centrum 4, after a period, centrum 4 fuses with the filler through the hole that holds bag 1, the later stage can be through detachable construction, with spinal nail stick subassembly 3 with hold bag 1 separation, demolish spinal nail stick subassembly 3.
Referring to fig. 1 to 4, as an embodiment of the vertebral body repair assembly according to the present invention, the connecting structure 2 includes a connecting member 21; the first end of connecting piece 21 is connected with holding bag 1, and the second end of connecting piece 21 is equipped with the connecting groove 22 that is used for holding spinal nail stick subassembly 3 part, and the threaded connection of connecting groove 22 opening part has jackscrew 23, and jackscrew 23 is used for compressing tightly spinal nail stick subassembly 3 part in connecting groove 22.
In this embodiment, the first end of the connecting member 21 may be fixedly connected or detachably connected to the receiving bag 1. The second end of the coupling piece 21 is provided with a coupling groove 22 in a U-shape. The inner walls of both sides of the opening of the connecting groove 22 are provided with threads through which the jackscrews 23 are connected. When the spinal nail rod assembly 3 is used, a part of the spinal nail rod assembly 3, such as the fixing rod 31, is placed into the connecting groove 22, then the jackscrew 23 is screwed at the opening of the connecting groove 22, the part of the spinal nail rod assembly 3 is pressed in the connecting groove 22, and the connection of the accommodating bag 1 and the spinal nail rod assembly 3 is realized. The receiving bag 1 can be separated from the spinal rod assembly 3 by removing the jackscrew 23 from the opening of the attachment slot 22. In use, after the containing bag 1 is placed on the surface defect of the vertebral body 4, the containing bag 1 is connected with the proximal part of the spinal nail rod assembly 3 through the connecting piece 21.
Referring to fig. 1 to 4, as an embodiment of the vertebral body repair assembly according to the present invention, the connecting groove 22 is used for accommodating the fixing rod 31 of the spinal nail rod assembly 3, and the jackscrew 23 is used for compressing the fixing rod 31 in the connecting groove 22. The connecting slot 22 is used for accommodating the fixing rod 31, and the position of the accommodating bag 1 can be conveniently adjusted along the fixing rod 31.
In this embodiment, the spinal nail-rod assembly 3 may be a spinal nail-rod assembly including a fixation rod 31 and a pedicle screw 32. The fixation rod 31 is intended to be positioned along the spinal column. Pedicle screws 32 are used to connect the fixation rods 31 to the various vertebral bodies 4 of the spine to restore the physiological curvature of the spine. In use, after the containing bag 1 is placed on the surface defect of the vertebral body 4, the section of the fixing rod 31 closest to the containing bag 1 is placed into the connecting groove 22 through the connecting piece 21 and is compressed by the jackscrew 23.
Referring to fig. 3 and 4, as an embodiment of the vertebral body repair assembly according to the present invention, the first end of the connector 21 is hooked to the receiving bag 1 by a hook 24. The first end of the connecting piece 21 can be hooked with the hole on the containing bag 1 through the hook 24, so that the connection is more convenient and the structure is simpler.
In this embodiment, the accommodating bag 1 may be a net structure having a plurality of meshes, and the first end of the connecting member 21 may be hooked with the meshes through the hook 24, so that the hooking position is easier to select. The hook 24 may be fixed to the first end of the connector 21, or may be provided on the first end of the connector 21 by other means.
Referring to fig. 3 and 4, as an embodiment of the vertebral body repair assembly according to the present invention, the hook 24 is rotatably disposed on the first end of the connecting member 21, and includes a hook portion 241 located outside the connecting member 21 and a rod portion 242 connected to the hook portion 241 and located inside the connecting groove 22. The rod part 242 is used for being partially pushed by the spinal nail rod assembly 3 placed in the connecting groove 22 so that the hook part 241 is engaged with the accommodating bag 1 and then the opening is engaged outside the connecting piece 21.
In this embodiment, a mounting hole is formed at the bottom of the connecting groove 22 of the connecting piece 21, and the hook 24 is mounted in the mounting hole and hinged to the side wall of the mounting hole through a rotating shaft. The hook 24 is an integral structure including a hook portion 241 and a lever portion 242, and the hook portion 241 is connected to one end of the lever portion 242. The hook portion 241 of the hook 24 extends out of the first end of the connecting piece 21 through the mounting hole and is used for hooking with the accommodating bag 1, the rod portion 242 of the hook 24 extends into the connecting groove 22 and is pushed by the spinal nail rod assembly 3 when the local part of the spinal nail rod assembly 3 is placed into the connecting groove 22 like the fixing rod 31, so that the hook portion 241 is driven to rotate, the opening of the hook portion 241 is attached to the outside of the connecting piece 21, and the accommodating bag 1 is prevented from being separated from the hook portion 241.
Referring to fig. 3 and 4, as an embodiment of the vertebral body repair assembly according to the present invention, the rod portion 242 is a flexible elastic member, one end of the rod portion 242 is rotatably connected to the bottom of the connecting groove 22, and the other end of the rod portion is abutted to the side wall of the connecting groove 22; the rod part 242 is used for being elastically bent after being pressed by the part of the spinal nail rod assembly 3 placed in the connecting groove 22 so as to pry the hook part 241 to ensure that the opening of the hook part 241 is attached to the outside of the connecting piece 21.
In this embodiment, the hook 24 is an integrated structure including a hook portion 241 and a rod portion 242, the hook portion 241 is connected to one end of the rod portion 242, and the rod portion 242 is made of an elastic titanium alloy or other elastic materials. The bottom of the connecting groove 22 of the connecting piece 21 is provided with a mounting hole. One end of the rod part 242 connected with the hook part 241 is located in the mounting hole and hinged with the side wall of the mounting hole through a rotating shaft, so that the hook 24 is rotatably arranged on the first end of the connecting piece 21, and the other end of the rod part 242 extends into the connecting groove 22 and is abutted against the side wall of the connecting groove 22. When the spinal nail bar connecting piece is used, a part of the spinal nail bar component 3, such as the fixing bar 31, is placed in the connecting groove 22, the part of the spinal nail bar component 3 extrudes the middle of the rod part 242 of the clamping hook 24 in the connecting groove 22, so that the rod part 242 is elastically bent and deformed, the hook part 241 is pried to rotate after the rod part 242 is bent, the opening of the hook part 241 is attached to the outside of the connecting piece 21, and the accommodating bag 1 is prevented from being separated from the hook part 241.
Referring to fig. 2 to 4, as an embodiment of the vertebral body repair assembly according to the present invention, a filling port 11 is disposed on a side of the receiving bag 1 away from the connecting structure 2, and the filling port 11 is a collapsible structure. The filling opening 11 is of a collapsible structure, and the containing bag 1 can be closed by collapsing the filling opening 11, so that the leakage of the filler in the containing bag 1 is avoided. By arranging the filling port 11 at the side of the containing bag 1 far away from the connecting structure 2, after the containing bag 1 is connected with the spinal nail rod assembly 3 through the connecting structure 2, the filling port 11 is pressed at the surface defect of the spinal vertebral body 4, on one hand, the filler can be prevented from leaking from the contracted filling port 11, and on the other hand, the vertebral body 4 can be fused with the filler through the gap of the contracted filling port 11.
In this embodiment, the accommodating bag 1 may be a mesh bag, specifically, a shapeable titanium alloy mesh bag or an absorbable material mesh bag, or a soft absorbable material mesh bag. The containing bag 1 can also be a bag made of an absorbable film, and a plurality of holes are formed in the absorbable film, so that the vertebral body 4 outside the containing bag 1 is fused with the filler inside the containing bag 1 through the holes. The receiving bag 1 may have only one filling opening 11, or may have a plurality of filling openings 11. The contractible structure of the filling opening 11 may be such that the opening end of the titanium alloy mesh tube is formed into a contractible structure by passing a rope back and forth through the side wall of the filling opening 11 and around the filling opening 11 in a circle, and the filling opening 11 can be contracted and closed by pulling the rope.
Specifically, the containing bag 1 may be made of a cylindrical titanium alloy mesh tube with one end closed, the open end of the titanium alloy mesh tube forms the filling port 11, a titanium alloy rope or a absorbable rope passes through the tube wall of the titanium alloy mesh tube in a reciprocating manner and winds around the open end of the titanium alloy mesh tube for one circle, so that the open end of the titanium alloy mesh tube forms a shrinkable structure, and the filling port 11 may be shrunk and closed by pulling the titanium alloy rope or the absorbable rope.
Referring to fig. 1-4, as an embodiment of the vertebral body repair assembly of the present invention, a receiving bag 1 is an absorbable member.
In this embodiment, the receiving bag 1 may be made of an existing material that can be absorbed by the human body. The material for making the receiving bag 1, which can be absorbed by human body, may be flexible, or may have plasticity, i.e. can be bent and shaped by the operator.
Referring to fig. 1 to 4, as an embodiment of the vertebral body repair assembly according to the present invention, the receiving bag 1 is a mesh bag, and the holes are meshes of the mesh bag. By adopting the structure, the first end of the connecting piece 21 is convenient to be hooked with the containing bag 1 through the hook 24, and the vertebral body 4 is convenient to be fused with the filler.
In this embodiment, the containing bag 1 may be made of a titanium alloy mesh, or may be made of a mesh made of an absorbable material.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A vertebral body repair assembly, comprising:
a flexible or shapeable containment bag for containing a filling material, having a cavity for fusing the filling material inside with an external vertebral body; and
the connecting structure is used for connecting the accommodating bag with the spinal nail rod assembly;
after the connecting structure connects the containing bag with a spinal nail rod assembly fixed on the spinal column, the containing bag is fixed at the surface defect of the spinal vertebral body by the spinal nail rod assembly;
the connecting structure comprises a connecting piece, a first end of the connecting piece is hooked with the accommodating bag through a hook, and a second end of the connecting piece is provided with a connecting groove for accommodating part of the spinal nail rod assembly; the clamping hook is rotatably arranged at the first end of the connecting piece and comprises a hook part positioned outside the connecting piece and a rod part connected with the hook part and positioned in the connecting groove; the rod part is used for being locally pushed by the spinal nail rod assembly placed in the connecting groove, so that the hook part and the accommodating bag are hooked, and then the opening is attached to the outside of the connecting piece.
2. The vertebral body repair assembly of claim 1 wherein the connection structure is a detachable structure.
3. The vertebral body repair assembly of claim 2 wherein a jackscrew is threadedly attached to the attachment slot opening, said jackscrew for compressing a portion of the spinal rod assembly within the attachment slot.
4. The vertebral body repair assembly of claim 3 wherein said attachment slots are adapted to receive a fixation rod of the spinal nail rod assembly and said jackscrew is adapted to compress said fixation rod within said attachment slots.
5. The vertebral body repair assembly of claim 1 wherein said rod portion is a flexible resilient member having one end pivotally connected to said slot bottom of said connecting slot and the other end abutting said side wall of said connecting slot; the rod part is used for being elastically bent after being locally extruded by the spinal nail rod assembly placed in the connecting groove so as to pry the hook part to enable the opening of the hook part to be attached to the outside of the connecting piece.
6. Vertebral body repair assembly according to any of claims 1 to 5, wherein a side of the receiving bag remote from the connection structure is provided with a filling opening, which is of a collapsible structure.
7. The vertebral body repair assembly of any one of claims 1 to 5 wherein the containment bag is an absorbable member.
8. The vertebral body repair assembly of any one of claims 1 to 5 wherein the containment bag is a mesh bag and the holes are the mesh openings of the mesh bag.
CN202010124270.9A 2020-02-27 2020-02-27 Vertebral body repair assembly Active CN111317598B (en)

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Application Number Priority Date Filing Date Title
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CN111317598B true CN111317598B (en) 2022-02-22

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1871253B1 (en) * 2005-04-08 2015-09-16 Paradigm Spine, LLC Interspinous vertebral and lumbosacral stabilization devices
CN103932772B (en) * 2014-02-07 2017-03-22 丁柱 Sustainable flushing and drainage pedicle screw for treating spinal tuberculosis and screw bar system
CN105726168B (en) * 2016-01-22 2017-11-03 张帆 A kind of 3D printing individuation customized implants forming devices and preparation method thereof
US11369474B2 (en) * 2017-07-17 2022-06-28 Warsaw Orthopedic, Inc. Bone implant having a mesh
CN110353793A (en) * 2019-07-26 2019-10-22 北京市春立正达医疗器械股份有限公司 Posterior cervical follows closely board fixer

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