CN112535556B - Air bag type artificial cervical intervertebral disc prosthesis - Google Patents
Air bag type artificial cervical intervertebral disc prosthesis Download PDFInfo
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- CN112535556B CN112535556B CN202011200404.7A CN202011200404A CN112535556B CN 112535556 B CN112535556 B CN 112535556B CN 202011200404 A CN202011200404 A CN 202011200404A CN 112535556 B CN112535556 B CN 112535556B
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- China
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- support frame
- flexible pipe
- bottom plate
- top plate
- disc prosthesis
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- 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
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
Abstract
The invention discloses a gasbag type artificial cervical intervertebral disc prosthesis, which comprises a top plate, a bottom plate and a flexible pipe hermetically arranged between the top plate and the bottom plate, wherein a space enclosed between the flexible pipe and the top plate and the bottom plate forms an air cavity; the top plate is provided with a one-way charging connector at the position inside the flexible pipe. The invention supports the cervical intervertebral disc in the form of the air bag, is convenient for the movement of the neck, bears all acting force under the action of normal physiological load and is supported by the air bag, the prosthesis cannot be worn in normal movement, the whole applicability of the prosthesis is improved, and the invention is more beneficial to the movement of the neck of a patient after operation.
Description
Technical Field
The invention relates to a cervical intervertebral disc prosthesis, in particular to a gasbag type artificial cervical intervertebral disc prosthesis.
Background
The intervertebral disc is the main connecting structure between the vertebral bodies, the upper cartilage end plate and the lower cartilage end plate and the fiber ring seal the nucleus pulposus together to form a whole body, and the intervertebral disc is extremely rich in elasticity and plays the roles of buffering external force, protecting the spine and reducing spinal cord injury. The fiber bundles of the fiber ring are mutually obliquely and crossly overlapped, so that the fiber ring becomes a solid tissue and can bear larger bending and torsion loads; especially, the cervical intervertebral discs are far more bending and torsional loads than the thoracic and lumbar intervertebral discs because the neck range of motion is far greater than the thoracic and lumbar regions.
With the development of modern industry, the change of life and working modes and the aging of population, the incidence rate of cervical spondylosis is on the trend of rising year by year, and if the cervical spondylosis is not treated in time, symptoms such as dizziness, neck pain, incapability of walking, incapability of holding objects and the like can appear, which brings great inconvenience to daily life. The degeneration and protrusion of cervical intervertebral disc is one of the most frequent causes of cervical spondylosis. The method for replacing the damaged cervical intervertebral disc by the cervical intervertebral disc prosthesis through the operation is a common treatment method, but the existing cervical intervertebral disc prosthesis is worn in the using process, and the worn particles can cause inflammation; in addition, some prostheses are in U-shaped structures, the deformation direction of the prostheses is limited, the swinging of the patient in the front-back direction is relatively easy, the amplitude and the difficulty of the side swinging are large, and the use of the patient is inconvenient.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a gasbag type artificial cervical intervertebral disc prosthesis which is convenient for neck movement and does not generate abrasion in the movement process.
The technical scheme is as follows: the invention relates to a gasbag type artificial cervical intervertebral disc prosthesis, which comprises a top plate, a bottom plate and a flexible pipe hermetically arranged between the top plate and the bottom plate, wherein a space enclosed between the flexible pipe and the top plate and the bottom plate forms an air cavity; and a one-way inflating nozzle is arranged at the position of the top plate in the flexible pipe.
In the scheme, the cervical intervertebral disc is supported in the form of the air bag, the movement of the neck is facilitated, in the process of supporting the neck-moving prosthesis, all acting force borne by the neck-moving prosthesis is supported by the air bag, and the prosthesis cannot be worn in normal movement; through the effect of shrink ring to make the flexible tube form the protrusion respectively in shrink ring's upper and lower both sides, thereby further improve the elasticity of flexible tube gasbag.
Further, in order to avoid the situation that the prosthesis cannot be used continuously after the fatigue failure of the air bag, a supporting frame is fixed at the position, located in the flexible pipe, of the top surface of the bottom plate, and an elastic supporting body is fixed at the position, corresponding to the position right above the supporting frame, of the bottom surface of the top plate; when the air chamber is filled with air, the elastic support body and the support frame are separated from each other, the distance between the elastic support body and the support frame is less than 1 mm, and when the air bag fails due to fatigue, the normal use of the prosthesis can be ensured through the action of the support frame and the elastic support body.
Furthermore, the bottom surface of the elastic supporting body is a convex spherical cambered surface, the top of the supporting frame is a concave spherical cambered surface, and the diameter of the concave spherical cambered surface is larger than that of the convex spherical cambered surface. The contraction ring is located below the maximum diameter position of the support frame, the diameter of the contraction ring is smaller than that of the concave spherical cambered surface of the support frame, the contraction ring is located below the maximum diameter position of the support frame, and the inner diameter of the contraction ring is smaller than the maximum outer diameter of the support frame, so that the contraction ring is prevented from moving between the support frame and the elastic support body after fatigue failure of the air bag and interfering normal movement between the support frame and the elastic support body.
Further, the support frame is fixedly connected with the bottom plate through threads, a threaded upright rod is arranged at the position, corresponding to the support frame, of the top surface of the bottom plate, and a matched threaded hole is formed in the bottom of the support frame, corresponding to the threaded upright rod. The supporting frame is characterized in that the bottom of the side wall of the supporting frame is a polygon prism, the polygon prism and the threaded hole are coaxially arranged, and the support frame and the threaded upright rod of the bottom plate are conveniently and fixedly connected through the polygon prism arranged at the bottom of the side wall of the supporting frame in a threaded mode.
Furthermore, symmetrical first flanges are arranged at the top of the elastic support body towards the direction of the flexible pipe, and the first flanges are fixedly connected with the bottom of the top plate through bolts.
Furthermore, vertical plates for fixing are arranged at the top of the top plate and the bottom of the bottom plate, and the vertical plates are mainly used for fixing after the artificial intervertebral disc replacement operation.
Furthermore, the gas filled in the gas cavity is perfluoropropane, and the flexible pipe is made of silica gel.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: (1) the invention supports the cervical intervertebral disc in the form of the air bag, is convenient for the movement of the neck, bears all acting force under the action of normal physiological load and is supported by the air bag, and the prosthesis is not worn in normal movement; (2) the invention avoids the prosthesis being used continuously after the fatigue failure of the air bag through the action of the support frame and the elastic support body, thereby improving the overall applicability of the prosthesis and being more beneficial to the neck movement of a patient after the operation; (3) the flexible tube is respectively protruded on the upper side and the lower side of the contraction ring by arranging the contraction ring, so that the elasticity of the flexible tube air bag is further improved, and the neck of a patient can move conveniently.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
Referring to fig. 1, a top plate 1, a flexible tube 3 and a bottom plate 2 are coaxially arranged in sequence from top to bottom, the top of the flexible tube 3 is hermetically connected to the bottom of the top plate 1, the bottom of the flexible tube 3 is hermetically connected to the top of the bottom plate 2, two ends of the flexible tube 3 are respectively provided with a second flanging 9 outwards, the bottom of the top plate 1 and the top of the bottom plate 2 are respectively provided with a second placing groove 10 corresponding to the second flanging 9, and the second flanging 9 is hermetically fixed in the second placing groove 10; the space that flexible tube 3 and roof 1 and bottom plate 2 enclose forms the air cavity, is full of perfluoropropane gas in the air cavity, and flexible tube 3 adopts silica gel, guarantees that the maximum external diameter of flexible tube 3 is less than the size of roof 1 and the size of bottom plate 2. A contraction ring 7 is sleeved in the middle of the outer side wall of the flexible pipe 3, the diameter of the contraction ring 7 is ensured to be smaller than the maximum outer diameter of the flexible pipe 3, the flexible pipe 3 is positioned at the upper side and the lower side of the contraction ring 7 and respectively protrudes outwards, and a structure similar to a spring is formed, so that the elasticity of the flexible pipe air bag is improved; a one-way inflating nozzle 6 is arranged in the range of the top plate 1 located on the flexible pipe 3, perfluoropropane gas enters the air cavity from the one-way inflating nozzle 6, and a sealing cover is arranged at the position of the one-way inflating nozzle 6, so that the integral sealing performance of the flexible pipe air bag after the gas is introduced into the air cavity is ensured. The prosthesis can completely adapt to the neck movement of a patient in daily use through the form of the air bag, and the applied force is supported by the air bag in the supporting process of the prosthesis, so that the prosthesis cannot be worn in normal activities.
A supporting frame 4 is fixed at the position, located in the flexible pipe 3, of the top surface of the bottom plate 2, an elastic supporting body 5 is fixed on the bottom surface of the top plate 1 corresponding to the position right above the supporting frame 4, the elastic supporting body 5 is made of polycarbonate polyurethane, the bottom surface of the elastic supporting body 5 is a convex spherical arc surface, the top of the supporting frame 4 is a concave spherical arc surface, and the diameter of the concave spherical arc surface is larger than that of the convex spherical arc surface, so that the supporting frame 4 can support the elastic supporting body 5 conveniently; the support frame 4 is fixedly connected with the bottom plate 2 through threads, a threaded upright rod 11 is arranged at the position, corresponding to the support frame 4, of the top surface of the bottom plate 2, a matched threaded hole 12 is formed in the bottom of the support frame 4, corresponding to the threaded upright rod 11, a polygon prism 13 is arranged at the bottom of the side wall of the support frame 4, the polygon prism 13 and the threaded hole 12 are coaxially arranged, and the support frame 4 and the threaded upright rod 11 of the bottom plate are conveniently connected and fixed through threads; the top of the elastic support body 5 is outwards provided with a first flanging 16, the first flanging 16 is fixedly connected with the bottom of the top plate 1 through a bolt 14, a first placing groove 15 is formed in the bottom of the top plate 1 corresponding to the first flanging 16, the first flanging 16 is fixed in the first placing groove 15, the contraction ring 7 is located below the maximum diameter of the support frame 4, the inner diameter of the contraction ring 7 is smaller than the maximum diameter of the concave spherical cambered surface of the support frame 4, and the top of the top plate 1 and the bottom of the bottom plate 2 are respectively provided with a vertical plate 8. When the air cavity is filled with air, the elastic support body 5 is separated from the support frame 4, and the distance between the elastic support body 5 and the support frame 4 is less than 1 mm, the prosthesis can be normally used; when the air bag fails due to fatigue, the support frame 4 and the elastic support body 5 can interact with each other to support the prosthesis, so that the prosthesis can still be used continuously, and meanwhile, the contraction ring 7 is positioned below the position of the maximum diameter of the support frame 4, and the inner diameter of the contraction ring 7 is smaller than the maximum outer diameter of the support frame 4, so that the contraction ring 7 is prevented from moving between the support frame 4 and the elastic support body 5 after the air bag fails due to fatigue and interfering with normal movement between the support frame 4 and the elastic support body 5.
When in use, the shrink ring 7 is sleeved on the surface of the support frame 4 from bottom to top, and then the support frame 4 sleeved with the shrink ring 7 is fixed through the threaded upright rod 11 and the threaded hole 12; then the bottom of the flexible pipe 3 penetrates between the contraction ring 7 and the support frame 4 from top to bottom, and a second flanging 9 at the bottom of the flexible pipe 3 is hermetically fixed in a second placing groove 10 arranged at the top of the bottom plate 2; then the first turned-over edge 16 of the elastic supporting body 5 is fixed in a first placing groove 15 arranged at the bottom of the top plate 1 through a bolt 14; then, the second flanging 9 at the top of the flexible pipe 3 is hermetically fixed in a second placing groove 10 arranged on the bottom plate of the top plate 1; then perfluoropropane is injected into the air cavity of the flexible pipe 3 through the one-way inflating nozzle 6, and when the pressure of the injected perfluoropropane just can support the flexible pipe 3 outwards, the position of the contraction ring 7 is adjusted to ensure that the maximum diameters of the upper and lower bulges of the contraction ring 7 are equal; continuously injecting perfluoropropane into the air cavity of the flexible pipe 3, and separating the elastic support body 5 from the support frame 4; then the sealing cover of the single air charging nozzle 6 is fixed in a sealing way and welded to be dead, and finally the prosthesis is placed on the cervical intervertebral disc of the patient.
Claims (6)
1. The utility model provides a gasbag formula artificial cervical intervertebral disc prosthesis, includes roof (1) and bottom plate (2), its characterized in that: the flexible pipe (3) is hermetically arranged between the top plate (1) and the bottom plate (2), a space enclosed by the flexible pipe (3) and the top plate (1) and the bottom plate (2) forms an air cavity, a contraction ring (7) is sleeved in the middle of the outer side wall of the flexible pipe (3), the diameter of the contraction ring (7) is smaller than the maximum outer diameter of the flexible pipe (3), and the flexible pipe (3) is positioned on two sides of the contraction ring (7) and protrudes outwards respectively; a unidirectional inflating nozzle (6) is arranged at the position, located in the flexible pipe (3), of the top plate (1); a support frame (4) is fixed at the position, located in the flexible pipe (3), of the top surface of the bottom plate (2), and an elastic support body (5) is fixed on the bottom surface of the top plate (1) corresponding to the position right above the support frame (4); when the air cavity is filled with air, the elastic support body (5) is separated from the support frame (4); the bottom surface of the elastic support body (5) is a convex spherical cambered surface, the top of the support frame (4) is a concave spherical cambered surface, and the diameter of the concave spherical cambered surface is larger than that of the convex spherical cambered surface; the contraction ring (7) is positioned below the maximum diameter of the support frame (4), and the diameter of the contraction ring (7) is smaller than that of the concave spherical cambered surface of the support frame (4).
2. The balloon type artificial cervical disc prosthesis as claimed in claim 1, wherein: through screw thread fixed connection between support frame (4) and bottom plate (2), the top surface of bottom plate (2) is equipped with screw thread pole setting (11) corresponding to the position department of support frame (4), the bottom of support frame (4) is equipped with screw hole (12) of matcing corresponding to screw thread pole setting (11).
3. The balloon type artificial cervical disc prosthesis as claimed in claim 2, wherein: the bottom of the side wall of the support frame (4) is a polygon prism (13), and the polygon prism (13) and the threaded hole (12) are coaxially arranged.
4. The balloon type artificial cervical disc prosthesis as claimed in claim 1, wherein: the top of the elastic support body (5) is provided with symmetrical first flanges (16) towards the direction of the flexible pipe (3), and the first flanges (16) are fixedly connected with the bottom of the top plate (1) through bolts (14).
5. The balloon type artificial cervical disc prosthesis as claimed in claim 1, wherein: the top of the top plate (1) and the bottom of the bottom plate (2) are both provided with vertical plates (8) for fixing.
6. The balloon type artificial cervical disc prosthesis as claimed in claim 1, wherein: the gas filled in the gas cavity is perfluoropropane, and the flexible pipe (3) is made of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011200404.7A CN112535556B (en) | 2020-11-02 | 2020-11-02 | Air bag type artificial cervical intervertebral disc prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011200404.7A CN112535556B (en) | 2020-11-02 | 2020-11-02 | Air bag type artificial cervical intervertebral disc prosthesis |
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| Publication Number | Publication Date |
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| CN112535556A CN112535556A (en) | 2021-03-23 |
| CN112535556B true CN112535556B (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011200404.7A Active CN112535556B (en) | 2020-11-02 | 2020-11-02 | Air bag type artificial cervical intervertebral disc prosthesis |
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Family Cites Families (14)
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| FR2694882B1 (en) * | 1992-08-24 | 1994-10-21 | Sofamor | Intervertebral disc prosthesis. |
| CN1293023A (en) * | 2000-09-26 | 2001-05-02 | 沈强 | Artificial human cervical intervertebral disk |
| CN100577123C (en) * | 2002-08-15 | 2010-01-06 | 新特斯有限责任公司 | Intervertebral disc implant |
| KR20060056265A (en) * | 2002-08-15 | 2006-05-24 | 신쎄스 (유.에스.에이.) | Controlled artificial intervertebral disc implant |
| US6969405B2 (en) * | 2003-04-23 | 2005-11-29 | Loubert Suddaby | Inflatable intervertebral disc replacement prosthesis |
| CN101559003B (en) * | 2009-06-02 | 2011-07-20 | 北京纳通投资有限公司 | Artificial intervertebral disc |
| US8449615B2 (en) * | 2010-04-18 | 2013-05-28 | F.I.S.H., Llc | Intervertebral implants having hydromagnetic joints |
| KR101284497B1 (en) * | 2012-11-21 | 2013-07-16 | 공주대학교 산학협력단 | Disk insert replacement member and replace surgical procedure method using the same |
| CN105310758B (en) * | 2015-03-18 | 2017-08-01 | 周军 | A kind of intervertebral disk stabilizer and its application method |
| PL3344156T3 (en) * | 2015-09-01 | 2020-07-27 | Spinal Stabilization Technologies Llc | Implantable nuclear prosthesis |
| CN105708583B (en) * | 2016-01-12 | 2017-06-13 | 南方医科大学 | A kind of artificial Facet Joints system |
| CN109528365A (en) * | 2018-11-30 | 2019-03-29 | 四川大学华西医院 | Cervical artificial disc tabulare gap filling device and artificial disc after arthroplasty |
| CN110934671B (en) * | 2019-12-16 | 2021-12-21 | 淮阴工学院 | Artificial cervical intervertebral disc prosthesis |
| CN110946682B (en) * | 2019-12-16 | 2022-02-11 | 淮阴工学院 | Artificial cervical intervertebral disc prosthesis convenient for neck movement |
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2020
- 2020-11-02 CN CN202011200404.7A patent/CN112535556B/en active Active
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| CN112535556A (en) | 2021-03-23 |
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Application publication date: 20210323 Assignee: Jiangsu Huichuang science and Education Development Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2022320000370 Denomination of invention: A gasbag type artificial cervical intervertebral disc prosthesis Granted publication date: 20220408 License type: Common License Record date: 20221213 |