CN109602466B - Cervical vertebra facet joint fusion device - Google Patents
Cervical vertebra facet joint fusion device Download PDFInfo
- Publication number
- CN109602466B CN109602466B CN201811544530.7A CN201811544530A CN109602466B CN 109602466 B CN109602466 B CN 109602466B CN 201811544530 A CN201811544530 A CN 201811544530A CN 109602466 B CN109602466 B CN 109602466B
- Authority
- CN
- China
- Prior art keywords
- spiral propelling
- expanding
- facet joint
- tooth
- hole
- 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.)
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Links
- 210000002517 zygapophyseal joint Anatomy 0.000 title claims abstract description 23
- 230000004927 fusion Effects 0.000 title abstract description 25
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 16
- 230000007480 spreading Effects 0.000 claims abstract description 9
- 241000276425 Xiphophorus maculatus Species 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 241001079814 Symphyotrichum pilosum Species 0.000 description 2
- 235000004224 Typha angustifolia Nutrition 0.000 description 2
- 230000008468 bone growth Effects 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000005065 subchondral bone plate Anatomy 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004819 osteoinduction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- 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
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
Abstract
The invention provides a cervical facet joint fusion device, which comprises a supporting part and a spreading part connected with the supporting part; the expanding part comprises a spiral propelling hole, and a spiral propelling rod matched with the spiral propelling hole is arranged in the spiral propelling hole; a plurality of expanding teeth are sequentially arranged on the outer wall of the spiral propelling hole from top to bottom, and one end of each expanding tooth is connected with the spiral propelling rod; the expanding teeth are obliquely arranged downwards along the propelling direction of the spiral propelling rod; and bone grafting windows which are inwards recessed are arranged on two sides of the expanding part, and are filled with bone grafting. The cervical facet joint fusion cage disclosed by the invention has the advantages that when the cervical facet joint fusion is carried out, the joint is spread and bone grafting is carried out, so that the joint clearance is enlarged and fused, the minimally invasive operation of a small channel is realized, the cervical facet joint is placed to slip and reset, the stability is increased, the operation is simple, the safety and risk are avoided, the biocompatibility and bone induction are good, the joint fusion rate is high, and the like.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a cervical facet joint fusion cage capable of expanding bone grafting for cervical vertebra minimally invasive surgery.
Background
At present, two methods for performing cervical vertebra/spinal joint fusion in operation are mainly adopted, one is a direct-view facet joint fusion technology, a tissue is cut in a conventional operation, cartilage and partial subchondral bone between facet joints are ground off, bone blocks are implanted, and then vertebral body nail rod fixation is performed, so that the purpose of facet joint fusion is achieved; the other is a minimally invasive channel technology, a channel of about 2cm is established at an affected part, cartilage and partial subchondral bone between small joints are ground under the assistance of an endoscope or X-ray, after bone blocks are implanted, a joint fusion device with unchangeable volume is placed, and then vertebral body nail rod fixation is carried out, so that the aim of clinical joint fusion is fulfilled. However, in clinic, the joint fusion operation under direct vision has the disadvantages of more bleeding, large damage, slow recovery and more complications; and the minimally invasive channel articular process joint fusion operation can occur the phenomena of slipping of a patient fusion device, unstable vertebra and low fusion rate.
Disclosure of Invention
The invention aims to solve the technical problem and provides a cervical facet joint fusion device which has the advantages of simplicity in operation, safety, no risk, high joint fusion rate and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a cervical vertebra facet joint fusion device comprises a supporting part and a spreading part connected with the supporting part; the expanding part comprises a spiral propelling hole, and a spiral propelling rod matched with the spiral propelling hole is arranged in the spiral propelling hole; a plurality of expanding teeth are sequentially arranged on the outer wall of the spiral propelling hole from top to bottom, and one end of each expanding tooth is connected with the spiral propelling rod; the expanding teeth are obliquely arranged downwards along the propelling direction of the spiral propelling rod; and bone grafting windows which are inwards recessed are arranged on two sides of the expanding part, and are filled with bone grafting.
Preferably, the supporting part is of a plate-shaped curved surface structure, and the supporting part is inwards concave and is attached to the rear of the cervical vertebra side block.
Preferably, the support part is provided with a fixing screw, and the fixing screw is positioned at the lowest side part of the support part.
Preferably, a threaded connection groove matched with a threaded spanner is formed in the top of the spiral pushing rod, and the threaded connection groove is integrally connected with the spiral pushing rod.
Preferably, the supporting part is provided with a spanner inlet matched with the threaded connecting groove.
As the preferable mode of the embodiment of the invention, a plurality of saw-tooth-shaped barbs are arranged on the outer surface of the opening part, and the saw-tooth-shaped barbs are attached to the facet joints.
As the preference of the embodiment of the invention, the expanding teeth comprise expanding tooth bodies and expanding tooth connectors arranged on two sides of the expanding tooth bodies, the expanding tooth connectors are matched with the spiral propelling rods in the spiral propelling holes, and the expanding tooth bodies are exposed outside the spiral propelling holes.
Compared with the prior art, the invention has the following beneficial effects:
the cervical facet joint fusion cage disclosed by the invention has the advantages that the joint is spread and planted when the articular process joint is fused, the joint clearance is increased and fused, the minimally invasive operation of a small channel is realized, the cervical facet joint is placed to slip and reset, the stability is increased, the operation is simple, the safety and risk are avoided, the biocompatibility and osteoinduction are good, and the joint fusion rate is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the cervical facet joint cage of the present invention.
FIG. 2 is a cross-sectional view of the structure of section A-A shown in FIG. 1;
fig. 3 is a schematic structural view of the expanding tooth according to the present invention.
The figure shows: 1. support part, 1.1, set screw, 1.2, spanner import, 2, struts the part, 2.1, the screw propulsion hole, 2.2, screw propulsion pole, 2.3, struts the tooth, 2.31, struts the tooth body, 2.32, struts the tooth connector, 2.4, bone grafting window, 2.5, threaded connection groove, 3, zigzag barb.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 2, an embodiment of the present invention provides a cervical facet joint cage, which specifically includes a support portion 1 and an opening portion 2 connected to the support portion 1; the supporting portion 1 is of a plate-shaped curved surface structure, and the specific supporting portion 1 is inwards sunken to be attached to a side block behind a cervical vertebra side block, so that the supporting portion is convenient to fix in the using process. The supporting part 2 is arranged at the lower part of the supporting part 1 and is connected with the bottom of the supporting part 1, the supporting part 2 specifically comprises a spiral pushing hole 2.1, a spiral pushing rod 2.2 matched with the spiral pushing hole 2.1 is arranged in the spiral pushing hole 2.1 (in the embodiment, an internal thread is arranged on the inner surface of the spiral pushing hole 2.1, an external thread is arranged on the outer surface of the spiral pushing rod 2.2, and the internal thread is matched with the external thread). A plurality of expanding teeth 2.3 are sequentially arranged on the outer wall of the spiral propelling hole 2.1 from top to bottom, one end of each expanding tooth 2.3 is connected with the spiral propelling rod 2.2, and each expanding tooth 2.3 is obliquely arranged downwards along the propelling direction (the direction indicated by an arrow in fig. 2) of the spiral propelling rod 2.2. When the spiral pushing rod 2.2 moves along the pushing direction, the spiral pushing rod 2.2 drives the expanding teeth 2.3 to move downwards, at this time, the expanding teeth 2.3 are slowly expanded (namely, the expanding teeth 2.3 are slowly tilted upwards) in the downward movement process, and then the small joints at the two sides are expanded, so that the small joint gaps can be enlarged and fused, and the minimally invasive operation of the small channels is realized. The two sides of the opening part 2 are provided with the inward concave bone grafting windows 2.4, and bone grafting can be filled through the bone grafting windows 2.4, thereby being more beneficial to bone growth and fusion between the small joints.
Referring to fig. 1, a fixing screw 1.1 is provided on the supporting portion 1, wherein the fixing screw 1.1 is located at the side portion of the supporting portion 1 at the lowest side (specifically, at the position of the lower left side of the supporting portion 1), and the fixing screw 1.1 is used to fix the overall structure (in this embodiment, the overall structure includes the supporting portion 1 and the opening portion 2) to the surface of the cervical vertebra side block, so as to facilitate the stabilization of the overall structure and the bone growth and fusion between the joints.
As shown in fig. 1 to 2, a threaded connection groove 2.5 which is matched with a thread wrench (not shown) is arranged at the top of the screw rod 2.2, wherein the threaded connection groove 2.5 is integrally connected with the screw rod 2.2. In this embodiment, the threaded connection groove 2.5 is a hexagon socket screw connection groove and is matched with a hexagon socket wrench. The supporting part 1 is provided with a spanner inlet 1.2 matched with the threaded connecting groove 2.5. In the embodiment, the screw wrench is inserted into the screw connecting groove 2.5 through the wrench inlet 1.2 to rotate the screw wrench, so that the screw wrench drives the screw pushing rod 2.2 to move downwards in the screw pushing hole 2.1, and the opening teeth 2.3 are driven to tilt upwards through the screw pushing rod 2.2 to open the small joints at two sides.
Referring to fig. 1, a plurality of saw-tooth barbs 3 are arranged on the outer surface of the opening part 2, and the saw-tooth barbs 3 are attached to the facet joints, so that the fusion device has good stability and is beneficial to fusion. In this embodiment, the spreading teeth 2.3 include spreading teeth bodies 2.31 and spreading teeth connectors 2.32 disposed on two sides of the spreading teeth bodies 2.31, the spreading teeth connectors 2.32 are matched with the screw propulsion rod 2.2 inside the screw propulsion hole 2.1, and the spreading teeth bodies 2.31 are exposed outside the screw propulsion hole 2.1.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A cervical facet joint cage, characterized in that: comprises a supporting part (1) and a spreading part (2) connected with the supporting part (1); the expanding part (2) comprises a spiral propelling hole (2.1), and a spiral propelling rod (2.2) matched with the spiral propelling hole (2.1) is arranged in the spiral propelling hole; a plurality of expanding teeth (2.3) are sequentially arranged on the outer wall of the spiral propelling hole (2.1) from top to bottom, and one end of each expanding tooth (2.3) is connected with the spiral propelling rod (2.2); the opening teeth (2.3) are obliquely arranged downwards along the propelling direction of the spiral propelling rod (2.2); two sides of the opening part (2) are provided with inward concave bone grafting windows (2.4), and the bone grafting windows (2.4) are filled with bone grafting; a threaded connection groove (2.5) matched with a threaded wrench is formed in the top of the spiral propelling rod (2.2), the threaded connection groove (2.5) is integrally connected with the spiral propelling rod (2.2), and a wrench inlet (1.2) matched with the threaded connection groove (2.5) is formed in the supporting portion (1); the supporting part (1) is of a platy curved surface structure, and the supporting part (1) is inwards sunken to be attached to the rear of the cervical vertebra side block.
2. The cervical facet joint cage of claim 1 wherein: the support part (1) is provided with a fixing screw (1.1), and the fixing screw (1.1) is positioned at the side part of the lowest part of the support part (1).
3. The cervical facet joint cage of claim 1 wherein: the outer surface of the opening part (2) is provided with a plurality of saw-tooth-shaped barbs (3), and the saw-tooth-shaped barbs (3) are attached to the facet joints.
4. The cervical facet joint cage of claim 1 wherein: the expanding tooth (2.3) comprises an expanding tooth body (2.31) and expanding tooth connectors (2.32) arranged on two sides of the expanding tooth body (2.31), the expanding tooth connectors (2.32) are matched with a spiral propelling rod (2.2) inside the spiral propelling hole (2.1), and the expanding tooth body (2.31) is exposed outside the spiral propelling hole (2.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544530.7A CN109602466B (en) | 2018-12-17 | 2018-12-17 | Cervical vertebra facet joint fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544530.7A CN109602466B (en) | 2018-12-17 | 2018-12-17 | Cervical vertebra facet joint fusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109602466A CN109602466A (en) | 2019-04-12 |
| CN109602466B true CN109602466B (en) | 2024-02-06 |
Family
ID=66008650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544530.7A Active CN109602466B (en) | 2018-12-17 | 2018-12-17 | Cervical vertebra facet joint fusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109602466B (en) |
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| CN109602466A (en) | 2019-04-12 |
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