CN105877878B - Low displacement artificial intervertebral disk - Google Patents
Low displacement artificial intervertebral disk Download PDFInfo
- Publication number
- CN105877878B CN105877878B CN201610336177.8A CN201610336177A CN105877878B CN 105877878 B CN105877878 B CN 105877878B CN 201610336177 A CN201610336177 A CN 201610336177A CN 105877878 B CN105877878 B CN 105877878B
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- CN
- China
- Prior art keywords
- soleplate
- flexible gasket
- artificial intervertebral
- intervertebral disk
- low displacement
- 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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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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
- A61F2240/005—Templates
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0003—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having an inflatable pocket filled with fluid, e.g. liquid or gas
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of low displacement artificial intervertebral disks, including upper soleplate and lower soleplate, it is secondary that friction is provided between upper soleplate and lower soleplate, it is provided with flexible gasket between the friction is secondary, flexible gasket is fixed on lower soleplate, the upper soleplate of flexible gasket support, with the relative rotation of upper soleplate and lower soleplate, the flexible gasket generates adaptability deformation, and holding is contacted with the contact site of upper soleplate for face.Since flexible gasket uses ultrahigh molecular weight polyethylene at rubbing surface will produce deformation to adapt to and be bonded upper soleplate under pressure, thus avoid generating linear displacement between two centrums up and down.
Description
Technical field
The present invention relates to a kind of low displacement artificial intervertebral disks, and in particular to applies in the artificial intervertebral disk of human spine position
Flexible gasket.
Background technology
Usually used artificial intervertebral disk sets up a spherical friction between upper and lower two soleplates as shown in Figure 1 and Figure 2
Pair, to retain certain swing and rotary moveable degree between upper and lower two centrum.Spherical friction pair is by a convex spherical
It is constituted with a concave spherical surface, sphere centre is surround in certain angle range inward turning between upper and lower two centrum when generating pendulum motion
Turn.
But a degree of linear displacement is also will produce between upper and lower two centrums at this time, excessive linear displacement can be led
Minor articulus clamping stagnation on rear side of vertebra is caused, movable influence is caused on user, reduces the flexibility of backbone.
Invention content
For problems of the prior art, the purpose of the present invention is to provide a kind of low displacement artificial intervertebral disk,
Flexible gasket is set between the friction pair of upper and lower two soleplates, and flexible gasket is using ultrahigh molecular weight polyethylene in pressure
The lower rubbing surface of effect will produce deformation to adapt to and be bonded upper soleplate, thus avoid generating linear position between two centrums up and down
It moves.
To achieve the goals above, the present invention uses following technical scheme：
Low displacement artificial intervertebral disk, including upper soleplate and lower soleplate are provided with friction pair, institute between upper soleplate and lower soleplate
It states and is provided with flexible gasket between rubbing pair, flexible gasket is fixed on lower soleplate, the upper soleplate of flexible gasket support, with upper end
The relative rotation of plate and lower soleplate, the flexible gasket generate adaptability deformation, and the contact site with upper soleplate is kept to be connect for face
It touches.
Further, the upper soleplate includes pedestal, which is provided with spherical cooperating head；The lower soleplate includes
Pedestal, the pedestal top are provided with mating groove, and the flexible gasket is arranged in the mating groove, supports the cooperating head.
Further, the flexible gasket is ducted body, and inner cavity is full of filling liquid.
Further, the flexible gasket using ultrahigh molecular weight polyethylene at, the filling liquid using physiological saline or
Purified water.
Further, it is provided with fabric reinforcement in the flexible gasket.
Further, the flexible gasket includes shell and capping, and injection hole and gas vent are provided in capping, is noted to inner cavity
Enter filling liquid and seals the injection hole and gas vent later.
Further, the capping and shell are bonded using bonding agent pairing, or use ultrasonic bonding by two parts
Docking forms closed internal cavities.
Further, connecting hole is set on the pedestal of the upper soleplate and lower soleplate, upper centrum is separately fixed at by screw
On hypocentrum.
The low displacement artificial intervertebral disk being arranged using the above structure has the following advantages：
With the relative rotation of upper soleplate and lower soleplate, flexible gasket will produce adaptability deformation, keep and upper soleplate
Contact site contacts for face, thus avoids generating linear displacement between two soleplates up and down, while avoiding two centrums up and down
Between generate linear displacement.
Since the abrasion to flexible gasket itself is very slight, the present invention extends the service life of artificial intervertebral disk, can
To reduce patient's post-operative number, mitigate the pain of patient, and medical expense is saved for patient.
Although flexible gasket is hollow, due to the incompressible characteristic of liquid, so ultra-high molecular weight polyethylene joint
The deformable upper surface of face gasket still can obtain enough support forces by liquid out of hollow cavity.
As a result of flexible gasket, there is cushioning effect, the differences of Physiological of artificial intervertebral disk and human body can be mitigated, carried
Adaptability of the height to prosthese.
Description of the drawings
Fig. 1 is the structural schematic diagram of artificial intervertebral disk in the prior art（Between vertebra）；
Fig. 2 is the structural schematic diagram of artificial intervertebral disk in the prior art（Between vertebra）；
Fig. 3 is the structural schematic diagram of the flexible artificial intervertebral disk of the present invention（Between vertebra）；
Fig. 4 is the structural schematic diagram of the flexible artificial intervertebral disk of the present invention（Between vertebra）；
Fig. 5 is the exploded view of the present invention；
Fig. 6 is the exploded view of the present invention；
Fig. 7 by the present invention the lower soleplate of use stereogram；
Fig. 8 by the present invention the lower soleplate of use front view；
Fig. 9 for the used flexible gasket of the present invention stereogram；
Figure 10 for the used flexible gasket of the present invention sectional view；
Figure 11 by the present invention the stereogram of soleplate in use；
Figure 12 by the present invention the front view of soleplate in use；
Figure 13 is the stereogram exploded view of the present invention；
Figure 14 is the stereogram exploded view of the present invention；
Figure 15 for the used flexible gasket of the present invention schematic diagram of fabrication technology；
Figure 16 for the used flexible gasket of the present invention schematic diagram of fabrication technology；
Figure 17 for the used flexible gasket of the present invention schematic diagram of fabrication technology；
Figure 18 is the structural schematic diagram of the flexible artificial intervertebral disk of the present invention（It is installed by screw）；
Figure 19 is the stereogram exploded view of the present invention（It is installed by screw）.
In figure：Centrum on 1.；2. hypocentrum；Soleplate on 3.；4. lower soleplate；Soleplate on 5.；5-1. pedestal；5-2.
Cooperating head；6. lower soleplate；6-1. pedestal；6-2. mating groove；7. flexible gasket；7-1. fabric reinforcement；7-2. capping；
7-3. injection hole；7-4. gas vent；8. filling liquid；9. screw.
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined technique purpose is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to structure, feature and effect of the invention, detailed description are as follows.
Embodiment 1
If Fig. 3, Fig. 4, Fig. 5, Fig. 6 show one embodiment of the present of invention, the low displacement artificial intervertebral in the embodiment
Disk, including upper soleplate 5 and lower soleplate 6 are provided with friction pair, are arranged between friction is secondary flexible between upper soleplate 5 and lower soleplate 6
Gasket 7, flexible gasket 7 are fixed on lower soleplate 6, the upper soleplate 5 of the support of flexible gasket 7, with the phase of upper soleplate 5 and lower soleplate 6
To rotation, flexible gasket 7 generate adaptability deformation, holding contacted for face with the contact site of upper soleplate 5, thus avoid above and below two
Linear displacement is generated between a soleplate, while being avoided and being generated linear displacement between two centrums up and down.
As shown in Figure 13, Figure 14, upper soleplate 5 includes pedestal 5-1, and the lower parts pedestal 5-1 are provided with spherical cooperating head 5-
2；Lower soleplate 6 includes pedestal 6-1, and the tops pedestal 6-1 are provided with mating groove 6-2, and flexible gasket 7 is arranged in mating groove 6-2,
Support cooperating head 5-2.The combination of mating groove 6-2 and cooperating head 5-2 can further function as the upper soleplate 5 of limitation and lower soleplate 6 hair
The effect of raw linear displacement.
Flexible gasket 7 is ducted body, and inner cavity is full of filling liquid 8.
Flexible gasket 7 is using ultrahigh molecular weight polyethylene at filling liquid 8 uses physiological saline or purified water, so i.e.
Just leakage, which occurs, to damage health.
Flexible gasket 7 includes shell and capping 7-2, covers and is provided with injection hole 7-3 and gas vent 7-4 on 7-2, to inner cavity
It injects after filling liquid and seals injection hole 7-3 and gas vent 7-4 with sealing agent.Concrete structure can refer to shown in Figure 16, Figure 17.
7-2 and shell will be covered to be bonded using bonding agent pairing, or dock two parts to be formed using ultrasonic bonding
Closed internal cavities.
In order to fix flexible gasket 7, connecting hole is set on the pedestal of upper soleplate 5 and lower soleplate 6, as shown in Figure 18, Figure 19,
It is separately fixed on upper centrum 1 and hypocentrum 2 by screw 9.
Embodiment 2
If Figure 16, Figure 17 show the embodiment of the present invention 2, in the present embodiment, fiber reinforcement is provided in flexible gasket 7
Layer 7-1.By the way that fabric reinforcement 7-1 is arranged, the intensity of flexible gasket 7 is improved, cavity is effectively prevent to be extruded rupture.
It is the manufacturing process of flexible gasket 7 as shown in figure 15, is made respectively especially by mould pressing method, super high molecular weight is poly-
Ethylene articular surface gasket is fabricated to capping and hollow form shell, reserves two apertures in capping in case injection liquid and discharge
Survival gas.It will cover and shell is securely right by two parts using bonding agent pairing bonding or using the methods of ultrasonic bonding
It connects and has formed closed internal cavities, injected the liquid such as physiological saline or purified water from an aperture with syringe, inner cavity is residual
Depositing gas can be discharged from another aperture；Liquid is sealed two apertures with sealing agent after filling.
It is described above simply to illustrate that of the invention, it is understood that the present invention is not limited to the above embodiments, meets
The various variants of inventive concept are within protection scope of the present invention.
Claims (7)
1. low displacement artificial intervertebral disk, including upper soleplate and lower soleplate are provided with friction pair between upper soleplate and lower soleplate, special
Sign is, flexible gasket is provided between the friction is secondary, and flexible gasket is fixed on lower soleplate, and flexible gasket support is upper eventually
Plate, with the relative rotation of upper soleplate and lower soleplate, the flexible gasket generates adaptability deformation, keeps and the contact of upper soleplate
Position contacts for face；
The upper soleplate includes pedestal, which is provided with spherical cooperating head；The lower soleplate includes pedestal, the pedestal
Top is provided with mating groove, and the flexible gasket is arranged in the mating groove, supports the cooperating head.
2. low displacement artificial intervertebral disk as described in claim 1, which is characterized in that the flexible gasket is ducted body, inner cavity
Full of filling liquid.
3. low displacement artificial intervertebral disk as claimed in claim 2, which is characterized in that the flexible gasket uses super high molecular weight
Polyethylene is made, and the filling liquid uses physiological saline or purified water.
4. low displacement artificial intervertebral disk as claimed in claim 2, which is characterized in that be provided with fiber in the flexible gasket and add
Strong layer.
5. low displacement artificial intervertebral disk as claimed in claim 2, which is characterized in that the flexible gasket includes shell and envelope
It covers, injection hole and gas vent is provided in capping, the injection hole and gas vent are sealed later to inner cavity injection filling liquid.
6. low displacement artificial intervertebral disk as claimed in claim 5, which is characterized in that the capping and shell are used bonding agent
Pairing is bonded, or docks two parts to form closed internal cavities using ultrasonic bonding.
7. low displacement artificial intervertebral disk as described in claim 1, which is characterized in that on the pedestal of the upper soleplate and lower soleplate
Connecting hole is set, is separately fixed on upper centrum and hypocentrum by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610336177.8A CN105877878B (en) | 2016-05-20 | 2016-05-20 | Low displacement artificial intervertebral disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610336177.8A CN105877878B (en) | 2016-05-20 | 2016-05-20 | Low displacement artificial intervertebral disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105877878A CN105877878A (en) | 2016-08-24 |
| CN105877878B true CN105877878B (en) | 2018-10-23 |
Family
ID=56716430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610336177.8A Active CN105877878B (en) | 2016-05-20 | 2016-05-20 | Low displacement artificial intervertebral disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105877878B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969161B (en) * | 2018-07-27 | 2021-08-03 | 深圳清华大学研究院 | Intervertebral motion retaining device and positioning type implantation instrument and implantation method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA992255A (en) * | 1971-01-25 | 1976-07-06 | Cutter Laboratories | Prosthesis for spinal repair |
| CH671691A5 (en) * | 1987-01-08 | 1989-09-29 | Sulzer Ag | |
| DE8807485U1 (en) * | 1988-06-06 | 1989-08-10 | Mecron Medizinische Produkte Gmbh, 1000 Berlin | Intervertebral disc endoprosthesis |
| US4911718A (en) * | 1988-06-10 | 1990-03-27 | University Of Medicine & Dentistry Of N.J. | Functional and biocompatible intervertebral disc spacer |
| FR2693650B1 (en) * | 1992-07-16 | 1994-09-30 | Simon Henri | Implant for partial or total replacement of organs preferably cartilaginous or bone. |
| ZA200501542B (en) * | 2002-08-15 | 2007-03-28 | Us Synthes | Controlled artificial intervertebral disc implant |
| US20060235523A1 (en) * | 2005-04-19 | 2006-10-19 | Sdgi Holdings, Inc. | Implant having a sheath with a motion-limiting attribute |
| CA2702964C (en) * | 2007-10-19 | 2015-12-29 | Synthes Usa, Llc | Hemi-prosthesis |
| US8118873B2 (en) * | 2008-01-16 | 2012-02-21 | Warsaw Orthopedic, Inc. | Total joint replacement |
| CN205814483U (en) * | 2016-05-20 | 2016-12-21 | 北京爱康宜诚医疗器材有限公司 | Low displacement artificial intervertebral disk |
-
2016
- 2016-05-20 CN CN201610336177.8A patent/CN105877878B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105877878A (en) | 2016-08-24 |
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