CN102018558A - Spinal posterior approach dynamic stabilizing device - Google Patents
Spinal posterior approach dynamic stabilizing device Download PDFInfo
- Publication number
- CN102018558A CN102018558A CN 201010597801 CN201010597801A CN102018558A CN 102018558 A CN102018558 A CN 102018558A CN 201010597801 CN201010597801 CN 201010597801 CN 201010597801 A CN201010597801 A CN 201010597801A CN 102018558 A CN102018558 A CN 102018558A
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- CN
- China
- Prior art keywords
- briquetting
- elasticity
- prosthese
- spinal column
- stabilization device
- 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
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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
-
- 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
Abstract
A spinal posterior approach dynamic stabilizing device provided by the invention relates to an orthopedic implant device used for curing spinal adjacent segment diseases, particularly for curing the degenerative hypertrophy of spinal facet joints, first-degree degenerative spondylolisthesis, spinal stenosis and other diseases. The dynamic stabilizing device contains an elastic prosthesis and two fixing blocks, wherein the two fixing blocks are separately arranged on the upper surface and lower surface of the elastic prosthesis; each fixing block contains a pressing block and two fixing rods; the two fixing rods are arranged on the pressing block; each fixing rod contains a head and a tail; the pressing block is provided with holes connected with the elastic prosthesis and an end surface matched with the upper surface or lower surface of the elastic prosthesis; the elastic prosthesis has an upper surface and a lower surface which are separately matched with the two fixing blocks; the upper and lower surfaces of the elastic prosthesis are separately provided with a positioning rod which is matched with the pressing block on the fixing blocks; and the two fixing blocks are sleeved on the positioning rods on the upper and lower surfaces of the elastic prosthesis through elastic prosthesis connecting holes on the pressing block to be connected together.
Description
Technical field
What spinal column posterior dynamic stabilization device of the present invention related to is a kind of orthopaedics implant device that is used for the treatment of spinal column neighbouring section pathological changes.Especially for diseases such as the little articular degeneration hypertrophy of treatment spinal column, I degree degenerative spondylolisthesis, spinal canal stenosis.
Background technology
Spinal column mainly is the vertebral body of stabilize adjacent in the function of human body, and the damage that neuroprotective is not caused by various motions and load provides the spontaneous movement of each sections; The globality that keeps spinal column; At spinal column internal delivery and scatteredload.Balance between these 3 is change and surgical operation and destroyed due to illness.The operative treatment means that spinal column neighbouring section pathological changes is traditional are rigidity fusion, and the spinal lesion sections is integral by bone-graft fusion optionally.Though this fusion has generally been used and bigger curative effect has been arranged, but physiological mechanics variation and sequela still may have a strong impact on surgical effect, rigidity merges afterload and distributes change, causes intervertebral disc, uncovertebral joint, the mobility in little joint, shearing, tension force, the pressure of neighbouring section to increase.Therefore, keep the seriousness that lesion segment motion and sharing of load will help to alleviate the neighbouring section pathological changes
Summary of the invention
The objective of the invention is provides a kind of spinal column posterior dynamic stabilization device at above-mentioned weak point, adopts elasticity prosthese and two fixed blocks, keeps lesion segment motion and sharing of load and greatly reduces above-mentioned neighbouring section increases pathological changes because of load risk.
Spinal column posterior dynamic stabilization device of the present invention takes following technical scheme to realize: spinal column posterior dynamic stabilization device comprises elasticity prosthese and two fixed blocks; Two fixed blocks are installed in respectively on the last plane and lower plane of elasticity prosthese; Wherein fixed block comprises briquetting and two fixed bars, two fixed bars are installed on the briquetting, described fixed bar is connected with modes such as briquetting adopt that welding or screw are fixed, described fixed bar is for adopting L shaped cylindrical bar, L shaped ovallized column or L shaped rectangular shaft, described fixed bar comprises head and afterbody, the head leading portion is arranged to taper shape, and the head outer surface is coated with hydroxyapatite coating layer, and the fixed bar afterbody has and fixed inclined-plane of briquetting or plane.Described briquetting is the circular arc briquetting, and described briquetting has arc groove, and arc groove is set to the similar profile in spinal column way of escape pulp cavity hole; Briquetting is provided with elasticity prosthese connecting hole, and has one and cooperate with plane on the elasticity prosthese or end face that lower plane cooperates.
The elasticity prosthese has last plane and the lower plane that cooperates respectively with two fixed blocks, the last plane of described elasticity prosthese and lower plane respectively have the locating rod that cooperates with briquetting on the fixed block, described locating rod end is provided with screw thread or groove, two fixed blocks respectively by the borehole jack that is connected with the elasticity prosthese on the briquetting on the locating rod of plane and lower plane on the elasticity prosthese, and the fixing all-in-one-piece of the elastic card that adopts nut or U type opening.
The elasticity prosthese is made by elastomeric material, and described elastomeric material adopts medical polycarbonate polyurethane elastomeric material, and the briquetting appearance similar of pseudoxanthoma elasticum shape and fixed block is also big slightly, and one week of pseudoxanthoma elasticum body side surface is concave shape.
The end face angle of the afterbody of the fixed bar of described fixed block and briquetting is 10 °～30 °.
The fixed bar head of described fixed block and afterbody are at an angle of 90.
The angle of taper of the head of described fixed bar is 30 °～90 °, and described fixed bar head leading portion is provided with boss, is convenient to adopt bone cement to fix.
Described briquetting is provided with three elasticity prosthese connecting holes.
The last plane of described elasticity prosthese and lower plane respectively have the locating rod that three elasticity prosthese connecting holes on the briquetting with fixed block cooperate.
Operation principle:
The fixed bar of spinal column posterior dynamic stabilization device fixed block of the present invention is fixed in the pedicle of vertebral arch of human vertebra by bone cement, the elasticity prosthese is installed in two fixed blocks that fix, when human vertebra moves, the stress that vertebral body is born is delivered on the elasticity prosthese by fixed block, because the elastic characteristic of elasticity prosthese can make and produce axial rotation, lateral bending between two fixed blocks, stretch Qu Yundong, has also limited the sagittal plain translation activity of the over-drastic front and back of spinal column simultaneously.Spinal column posterior dynamic stabilization device has kept the almost total movement of spinal column by these motions, can cushion the bearing capacity of spinal column simultaneously, is dispersed with the stress that the spinal segments motion produces, reach reduce neighbouring section stress to avoid neighbouring section generation pathological changes.
Advantage of the present invention:
Spinal column posterior dynamic stabilization device of the present invention is because the elasticity prosthese has adopted elastomeric material, the unique design of spinal column posterior dynamic stabilization device makes it can replace the function in little joint after operation, central authorities and two side areas to spinal column are carried out complete decompress(ion), realize the directly effectively decompression to oppressed nervous tissue.Contrast traditional fusion, adopt spinal column posterior dynamic stabilization device not only to keep the mobility of spinal column, also recovered the biomechanical property in spinal lesion zone, the improper load that stops treatment sections and contiguous spinal motion segment thereof has greatly been avoided the risk that neighbouring section is degenerated in the traditional operation.
Description of drawings
In order to understand the present invention better and to understand practical application of the present invention, provide the following drawings at this paper, and described accompanying drawing has been carried out reference.Should be noted that given accompanying drawing only as an example with preferred implementation, the scope defined in restriction explanation and claims.
Fig. 1 is a spinal column posterior dynamic stabilization device decomposing schematic representation.
Fig. 2 is the elasticity prosthese vertical view of spinal column posterior dynamic stabilization device.
Fig. 3 is the elasticity prosthese front view of spinal column posterior dynamic stabilization device.
Fig. 4 is the fixed block vertical view of spinal column posterior dynamic stabilization device.
Fig. 5 is the fixed block front view of spinal column posterior dynamic stabilization device.
Fig. 6 is the sketch map of wherein a kind of form of the locating rod of elasticity prosthese in the spinal column posterior dynamic stabilization device.
Fig. 7 is a kind of sketch map of elastic card that is used for fixing the U type opening of elasticity prosthese in the spinal column posterior dynamic stabilization device.
The specific embodiment
With reference to accompanying drawing 1～7, spinal column posterior dynamic stabilization device comprises elasticity prosthese 2 and two fixed blocks 1; Two fixed blocks 1 are installed in respectively on the last plane 16 and lower plane 17 of elasticity prosthese 2; Wherein fixed block 1 comprises that briquetting 10 and 5, two fixed bars 5 of two fixed bars are installed on the briquetting 10, and described fixed bar 5 is connected with modes such as briquetting 10 adopt that welding or screw are fixed.Described fixed bar 5 adopts L shaped cylindrical bar, L shaped ovallized column or L shaped rectangular shaft, described fixed bar 5 comprises head 4 and afterbody 6, head 4 leading portions of described fixed bar 5 are arranged to taper shape, head 4 outer surfaces are coated with hydroxyapatite coating layer, and fixed bar afterbody 6 has and briquetting 10 fixed inclined-plane or planes.Described briquetting 10 is the circular arc briquetting, and described briquetting 10 has arc groove 15, and arc groove 15 is set to the similar profile in spinal column way of escape pulp cavity hole; Briquetting 10 is provided with three elasticity prosthese connecting holes 12, and has one and cooperate with plane on the elasticity prosthese or end face 14 that lower plane cooperates.
Described elasticity prosthese 2 is made by elastomeric material, described elastomeric material adopts medical polycarbonate polyurethane elastomeric material, the briquetting appearance similar of pseudoxanthoma elasticum shape and fixed block is also big slightly, 8 one weeks of pseudoxanthoma elasticum body side surface are concave shape 9, elasticity prosthese 2 has last plane 16 and the lower plane 17 that cooperates respectively with two fixed blocks 1, the last plane 16 of described elasticity prosthese 2 and lower plane 17 respectively have three with fixed block on briquetting 10 on the locating rod 7 that cooperates of elasticity prosthese connecting hole 12, described locating rod 7 ends are provided with screw thread 13 or groove 19, adopt the elastic card 20 of nut 11 or U type opening fixing respectively.The afterbody 6 of the fixed bar 5 of described fixed block 1 is 10 °～30 ° with the end face 14 angle α of briquetting 10.
Fixed bar 5 heads 4 of described fixed block 1 and afterbody 6 are at an angle of 90.
The head 4 of described fixed bar 5 is taper 3, and taper 3 angles are 30 °～90 °, and described fixed bar head leading portion is provided with boss 18, is convenient to adopt bone cement to fix.
Spinal column posterior dynamic stabilization device is to be enclosed within on the locating rod 13 on plane 16 and lower plane 17 on the elasticity prosthese by the hole 12 that is connected with the elasticity prosthese on the briquetting 10 of fixed block respectively by two fixed blocks 1, and the fixing all-in-one-piece of the elastic card 20 that adopts nut 11 or U type opening.
Claims (10)
1. a spinal column posterior dynamic stabilization device is characterized in that comprising elasticity prosthese and two fixed blocks; Two fixed blocks are installed in respectively on the last plane and lower plane of elasticity prosthese; Wherein fixed block comprises briquetting and two fixed bars, and two fixed bars are installed on the briquetting, and described fixed bar comprises head and afterbody, and described briquetting is the circular arc briquetting; Briquetting is provided with elasticity prosthese connecting hole, and has one and cooperate with plane on the elasticity prosthese or end face that lower plane cooperates;
The elasticity prosthese has last plane and the lower plane that cooperates respectively with two fixed blocks, the last plane of described elasticity prosthese and lower plane respectively have the locating rod that cooperates with briquetting on the fixed block, described locating rod end is provided with screw thread or groove, two fixed blocks are enclosed within on the locating rod on plane and lower plane on the elasticity prosthese by the elasticity prosthese connecting hole on the briquetting respectively, and the fixing all-in-one-piece of the elastic card that adopts nut or U type opening.
2. spinal column posterior dynamic stabilization device according to claim 1 is characterized in that described fixed bar and briquetting adopt welding or screw fixation method to be connected.
3. spinal column posterior dynamic stabilization device according to claim 1 is characterized in that described fixed bar is for adopting L shaped cylindrical bar, L shaped ovallized column or L shaped rectangular shaft.
4. spinal column posterior dynamic stabilization device according to claim 1 is characterized in that the head leading portion of described fixed bar is arranged to taper shape, and the head outer surface is coated with hydroxyapatite coating layer.
5. spinal column posterior dynamic stabilization device according to claim 1 is characterized in that the fixed bar afterbody has and fixed inclined-plane of briquetting or plane.
6. spinal column posterior dynamic stabilization device according to claim 1 is characterized in that the afterbody of fixed bar of described fixed block and the end face angle α of briquetting are 10 °～30 °, and the fixed bar head of described fixed block and afterbody are at an angle of 90.
7. spinal column posterior dynamic stabilization device according to claim 1, it is characterized in that described briquetting is provided with three elasticity prosthese connecting holes, the last plane of described elasticity prosthese and lower plane respectively have three locating rods that cooperate with elasticity prosthese connecting hole on the briquetting.
8. spinal column posterior dynamic stabilization device according to claim 1, the angle of taper that it is characterized in that the head of described fixed bar are 30 °～90 °, and described fixed bar head leading portion is provided with boss, is convenient to adopt bone cement to fix.
9. spinal column posterior dynamic stabilization device according to claim 1 is characterized in that described briquetting has arc groove, and arc groove is set to the similar profile in spinal column way of escape pulp cavity hole.
10. spinal column posterior dynamic stabilization device according to claim 1, it is characterized in that described elasticity prosthese made by elastomeric material, described elastomeric material adopts medical polycarbonate polyurethane elastomeric material, the briquetting appearance similar of pseudoxanthoma elasticum shape and fixed block is also big slightly, and one week of pseudoxanthoma elasticum body side surface is concave shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597801 CN102018558A (en) | 2010-12-20 | 2010-12-20 | Spinal posterior approach dynamic stabilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597801 CN102018558A (en) | 2010-12-20 | 2010-12-20 | Spinal posterior approach dynamic stabilizing device |
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| Publication Number | Publication Date |
|---|---|
| CN102018558A true CN102018558A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010597801 Pending CN102018558A (en) | 2010-12-20 | 2010-12-20 | Spinal posterior approach dynamic stabilizing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000645A (en) * | 2014-06-10 | 2014-08-27 | 张衣北 | Dynamic fixing system of posterior spinal |
| CN104207833A (en) * | 2013-05-29 | 2014-12-17 | 天津市威曼生物材料有限公司 | Posterior cervical vertebra plate clamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060264938A1 (en) * | 2005-03-21 | 2006-11-23 | St. Francis Medical Technologies, Inc. | Interspinous process implant having deployable wing and method of implantation |
| US20070032790A1 (en) * | 2005-08-05 | 2007-02-08 | Felix Aschmann | Apparatus for treating spinal stenosis |
| CN101129271A (en) * | 2006-08-21 | 2008-02-27 | 叶中权 | Device for expanding pleurite vertebral column spinous process |
| CN101617954A (en) * | 2008-07-01 | 2010-01-06 | 庄芳瑛 | Spinal fixing device between spines |
-
2010
- 2010-12-20 CN CN 201010597801 patent/CN102018558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060264938A1 (en) * | 2005-03-21 | 2006-11-23 | St. Francis Medical Technologies, Inc. | Interspinous process implant having deployable wing and method of implantation |
| US20070032790A1 (en) * | 2005-08-05 | 2007-02-08 | Felix Aschmann | Apparatus for treating spinal stenosis |
| CN101129271A (en) * | 2006-08-21 | 2008-02-27 | 叶中权 | Device for expanding pleurite vertebral column spinous process |
| CN101617954A (en) * | 2008-07-01 | 2010-01-06 | 庄芳瑛 | Spinal fixing device between spines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207833A (en) * | 2013-05-29 | 2014-12-17 | 天津市威曼生物材料有限公司 | Posterior cervical vertebra plate clamp |
| CN104000645A (en) * | 2014-06-10 | 2014-08-27 | 张衣北 | Dynamic fixing system of posterior spinal |
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Application publication date: 20110420 |