CN110934669A - Intervertebral disc movable prosthesis - Google Patents

Intervertebral disc movable prosthesis Download PDF

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Publication number
CN110934669A
CN110934669A CN201911257914.5A CN201911257914A CN110934669A CN 110934669 A CN110934669 A CN 110934669A CN 201911257914 A CN201911257914 A CN 201911257914A CN 110934669 A CN110934669 A CN 110934669A
Authority
CN
China
Prior art keywords
intervertebral disc
movable
body plate
prosthesis
main body
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
CN201911257914.5A
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Chinese (zh)
Inventor
季方秋
张春雨
陈贤帅
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.)
Foshan Yihe Biotechnology Co Ltd
Original Assignee
Foshan Yihe Biotechnology 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 Foshan Yihe Biotechnology Co Ltd filed Critical Foshan Yihe Biotechnology Co Ltd
Priority to CN201911257914.5A priority Critical patent/CN110934669A/en
Publication of CN110934669A publication Critical patent/CN110934669A/en
Priority to PCT/CN2020/091779 priority patent/WO2021114577A1/en
Pending legal-status Critical Current

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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
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]

Abstract

The invention discloses an intervertebral disc movable prosthesis, which comprises an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis; and the upper intervertebral disc prosthesis is provided with a movable ball structure, the lower intervertebral disc prosthesis is provided with a movable cavity which is matched with the movable ball structure, and the friction between the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis is changed into rolling friction by the matching of the movable ball structure and the movable cavity, so that the friction resistance is reduced, and the service life of the intervertebral disc movable prosthesis is prolonged.

Description

Intervertebral disc movable prosthesis
Technical Field
The invention belongs to the technical field of implant devices, and particularly relates to an intervertebral disc movable prosthesis.
Background
Traditional disc fusion sacrifices more mobility of the patient's spine in treating the patient's disc pathology. The contact surface of the intervertebral disc prosthesis in the host body is easily damaged under the influence of larger sliding friction force in the movement process of a patient, thereby influencing the service life of the prosthesis. Meanwhile, long-time sliding friction can cause the material on the surface of the prosthesis to fall off so as to generate fragments, and the fragments are easy to cause inflammation of a human body so as to cause the implanted prosthesis to loosen. At present, the service life of the prosthesis is prolonged by adopting wear-resistant materials between the contact surfaces of the intervertebral discs, and the cost is higher and the processing is complex. The stability of traditional intervertebral disc complex is not high, takes place the dislocation accident because of not hard up easily, and produces collision damage and abnormal sound easily, and the flexibility ratio between the intervertebral disc is not high simultaneously. The traditional intervertebral disc adopts a regular structural design and is not matched with the natural spine of a patient.
Disclosure of Invention
The invention provides an intervertebral disc movable prosthesis which has the advantages of small friction resistance and long service life.
In order to solve the above problems, the present invention adopts the following technical measures.
An intervertebral disc motion prosthesis comprises an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis;
the upper intervertebral disc prosthesis comprises a first main body plate and a movable ball structure, wherein a conical fixing nail is arranged on the upper surface of the first main body plate, the movable ball structure is arranged on the lower surface of the first main body plate, and the position of the movable ball structure corresponds to the axis of a rotating shaft when a spine twists; the movable ball structure comprises a movable hemisphere and a ball, the movable hemisphere is fixed on the lower surface of the first main body plate, a movable groove is formed in the movable hemisphere, the ball is arranged in the movable groove, and the ball rotates in the movable groove;
the lower intervertebral disc prosthesis comprises a second main body plate and a movable cavity, the upper surface of the second main body plate is provided with the movable cavity, the position of the movable cavity corresponds to the position of the movable ball structure, and the movable cavity is matched with the movable ball structure; the lower surface of the second main body plate is provided with a conical fixing nail.
Further, the upper surface of the first main body plate is a rough arc-shaped surface; the lower surface of first main part board is glossy plane, just the upper surface of first main part board can laminate mutually with the cambered surface of patient's backbone contact.
Further, the thickness of the first main body plate is 1.5-3.0 mm.
Further, the upper surface of the second main body plate is a smooth plane; the lower surface of second main part board is crude arcwall face, just the lower surface of second main part can laminate mutually with the cambered surface of patient's backbone contact.
Further, the thickness of the second main body plate is 1.5-3.0 mm.
Furthermore, the surface of the movable ball structure is covered with a polymer ceramic film.
Further, the tapered fixing nails are arranged at the middle position of the upper surface of the first body plate, and the tapered fixing nails are uniformly distributed.
Further, the conical fixing nails are arranged in the middle of the lower surface of the second body plate, and the conical fixing nails are uniformly distributed.
The manufacturing method of the intervertebral disc active prosthesis comprises the following steps:
(1) scanning the spine form of the diseased part of the patient by CT to obtain required data, importing the data into MIMICS software to generate a three-dimensional image in an STL format, and repairing;
(2) importing the repaired model into Magics software, and obtaining the structures of a first main body plate and a second main body plate of the intervertebral disc prosthesis by selecting a spinal arc surface stretching mode;
(3) drawing a ball moving structure, a moving cavity structure and a conical fixing nail in PRO/E software, and finally outputting a model in an STL format;
(4) importing the model into Magics software, obtaining the structure of the invention through Boolean operation, and then repairing;
(5) setting a model of the intervertebral disc activity prosthesis for support, and paying attention to the fact that a support surface is a rough surface;
(6) guiding the model into an SLM3D printer for manufacturing and processing;
(7) and polishing the processed sample piece, and spraying high polymer ceramic on the ball, thereby finally finishing the preparation of the intervertebral disc movable prosthesis.
The invention has the beneficial effects that: the intervertebral disc movable prosthesis comprises an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis, wherein a movable ball structure is arranged on the upper intervertebral disc prosthesis, a movable cavity which is matched with the movable ball structure is arranged on the lower intervertebral disc prosthesis, and the friction between the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis is changed into rolling friction by matching the movable ball structure and the movable cavity, so that the friction resistance is reduced, and the service life of the intervertebral disc movable prosthesis is prolonged.
Drawings
FIG. 1 is a schematic structural view of the upper intervertebral disc prosthesis according to example 1;
FIG. 2 is a schematic structural view of the lower intervertebral disc prosthesis according to example 1;
fig. 3 is a schematic view showing an assembled structure of the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis according to example 1.
Detailed Description
Example 1
Referring to fig. 1 to 3, an intervertebral disc motion prosthesis comprises an upper intervertebral disc prosthesis 100 and a lower intervertebral disc prosthesis 200;
the upper intervertebral disc prosthesis 100 comprises a first main body plate 110 and a movable ball structure, wherein the upper surface of the first main body plate 110 is provided with a conical fixing nail 130, the movable ball structure is arranged on the lower surface of the first main body plate 110, and the position of the movable ball structure corresponds to the axis of a rotating shaft when a spine twists; the movable ball structure comprises a movable hemisphere 121 and a ball 122, the movable hemisphere 121 is fixed at the lower surface of the first body plate 110, a movable groove 123 is formed on the movable hemisphere 121, the ball 122 is arranged in the movable groove 123, and the ball 122 rotates in the movable groove 123;
the lower intervertebral disc prosthesis 200 comprises a second main body plate 210 and a movable cavity 220, the upper surface of the second main body plate 210 is provided with the movable cavity 220, the position of the movable cavity 220 corresponds to the position of the movable ball structure, and the movable cavity 220 is matched with the movable ball structure; the lower surface of the second body plate 210 is provided with a tapered fixing nail 130.
Further, the upper surface of the first body plate 110 is a rough arc-shaped surface; the lower surface of the first body plate 110 is a smooth plane; and the upper surface of the first body plate 110 can be fitted to the curved surface of the patient's spine.
Further, the thickness of the first body plate 110 is 1.5 to 3.0 mm.
Further, the upper surface of the second body plate 210 is a smooth plane; the lower surface of the second main body plate 210 is a rough arc-shaped surface; and the lower surface of the second body 210 can be fitted to the curved surface of the patient's spine.
Further, the thickness of the second body plate 210 is 1.5 to 3.0 mm.
Furthermore, the surface of the movable ball structure is covered with a polymer ceramic film.
Further, the tapered fixing pins 130 are disposed at the middle position of the upper surface of the first body plate 110, and the tapered fixing pins 130 are uniformly distributed.
Further, the tapered fixing pins 130 are disposed at the middle position of the lower surface of the second body plate 210, and the tapered fixing pins 130 are uniformly distributed.
The manufacturing method of the intervertebral disc active prosthesis comprises the following steps:
(1) scanning the spine form of the diseased part of the patient by CT to obtain required data, importing the data into MIMICS software to generate a three-dimensional image in an STL format, and repairing;
(2) guiding the repaired model into Magics software, and obtaining the structures of the first main body plate 110 and the second main body plate 210 of the intervertebral disc prosthesis by selecting a spinal arc surface stretching mode;
(3) drawing a movable ball structure, a movable cavity 220 structure and a conical fixing nail 130 in PRO/E software, and finally outputting a model in an STL format;
(4) importing the model into Magics software, obtaining the structure of the invention through Boolean operation, and then repairing;
(5) setting a model of the intervertebral disc activity prosthesis for support, and paying attention to the fact that a support surface is a rough surface;
(6) guiding the model into an SLM3D printer for manufacturing and processing;
(7) and polishing the processed sample piece, and spraying high polymer ceramic on the ball, thereby finally finishing the preparation of the intervertebral disc movable prosthesis.

Claims (8)

1. An intervertebral disc motion prosthesis is characterized by comprising an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis;
the upper intervertebral disc prosthesis comprises a first main body plate and a movable ball structure, wherein a conical fixing nail is arranged on the upper surface of the first main body plate, the movable ball structure is arranged on the lower surface of the first main body plate, and the position of the movable ball structure corresponds to the axis of a rotating shaft when a spine twists; the movable ball structure comprises a movable hemisphere and a ball, the movable hemisphere is fixed on the lower surface of the first main body plate, a movable groove is formed in the movable hemisphere, the ball is arranged in the movable groove, and the ball rotates in the movable groove;
the lower intervertebral disc prosthesis comprises a second main body plate and a movable cavity, the upper surface of the second main body plate is provided with the movable cavity, the position of the movable cavity corresponds to the position of the movable ball structure, and the movable cavity is matched with the movable ball structure; the lower surface of the second main body plate is provided with a conical fixing nail.
2. An intervertebral disc action prosthesis according to claim 1, wherein the upper surface of the first body plate is a rough arcuate surface; the lower surface of the first main body plate is a smooth plane.
3. An intervertebral disc movement prosthesis according to claim 1, wherein the first body plate has a thickness of 1.5 to 3.0 mm.
4. An intervertebral disc action prosthesis according to claim 1, wherein the upper surface of the second body plate is a smooth flat surface; the lower surface of the second main body plate is a rough arc-shaped surface.
5. An intervertebral disc movement prosthesis according to claim 1, wherein the second body plate has a thickness of 1.5 to 3.0 mm.
6. The intervertebral disc motion prosthesis of claim 1, wherein the surface of the movable ball structure is coated with a polymeric ceramic membrane.
7. An intervertebral disc movement prosthesis according to claim 1, wherein the tapered pegs are provided at a central position on the upper surface of the first body plate and are evenly distributed.
8. An intervertebral disc movement prosthesis according to claim 1, wherein the tapered pegs are provided at intermediate positions on the lower surface of the second body plate and are evenly distributed.
CN201911257914.5A 2019-12-10 2019-12-10 Intervertebral disc movable prosthesis Pending CN110934669A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201911257914.5A CN110934669A (en) 2019-12-10 2019-12-10 Intervertebral disc movable prosthesis
PCT/CN2020/091779 WO2021114577A1 (en) 2019-12-10 2020-05-22 Movable intervertebral disc prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911257914.5A CN110934669A (en) 2019-12-10 2019-12-10 Intervertebral disc movable prosthesis

Publications (1)

Publication Number Publication Date
CN110934669A true CN110934669A (en) 2020-03-31

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ID=69910285

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911257914.5A Pending CN110934669A (en) 2019-12-10 2019-12-10 Intervertebral disc movable prosthesis

Country Status (2)

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CN (1) CN110934669A (en)
WO (1) WO2021114577A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021114577A1 (en) * 2019-12-10 2021-06-17 佛山市逸合生物科技有限公司 Movable intervertebral disc prosthesis

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7179294B2 (en) * 2002-04-25 2007-02-20 Warsaw Orthopedic, Inc. Articular disc prosthesis and method for implanting the same
US7491239B2 (en) * 2005-02-23 2009-02-17 Joint Synergy, Llc Interior insert ball and dual socket joint
US20060247777A1 (en) * 2005-04-29 2006-11-02 Sdgi Holdings, Inc. Multiple bearing implant
JP4990296B2 (en) * 2006-02-23 2012-08-01 ファネウイル イノベーションズ インベスティメント エル ティー デー． Intervertebral disk replacement device
CN103565561B (en) * 2013-09-26 2016-07-06 深圳清华大学研究院 Artificial lumbar intervertebral disc
CN105055055B (en) * 2015-08-12 2017-03-15 陈伟 A kind of biomimetic prosthetic centrum that with mobility and conveniently inserts
CN107374790A (en) * 2017-08-18 2017-11-24 中国医科大学附属第医院 A kind of porous soleplate formula cervical artificial disc prosthese
CN110934669A (en) * 2019-12-10 2020-03-31 佛山市逸合生物科技有限公司 Intervertebral disc movable prosthesis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021114577A1 (en) * 2019-12-10 2021-06-17 佛山市逸合生物科技有限公司 Movable intervertebral disc prosthesis

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