CN202699351U - Lumbar fusion cage - Google Patents
Lumbar fusion cage Download PDFInfo
- Publication number
- CN202699351U CN202699351U CN2012204250110U CN201220425011U CN202699351U CN 202699351 U CN202699351 U CN 202699351U CN 2012204250110 U CN2012204250110 U CN 2012204250110U CN 201220425011 U CN201220425011 U CN 201220425011U CN 202699351 U CN202699351 U CN 202699351U
- Authority
- CN
- China
- Prior art keywords
- fusion cage
- main body
- fusion device
- bolt
- rotor
- 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.)
- Expired - Lifetime
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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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (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)
- Surgical Instruments (AREA)
Abstract
The utility model provides a lumbar fusion cage and belongs to the medical instrument field. The lumber fusion cage comprises a fusion cage main body. The lumber fusion cage is characterized in that a rotatable fixing device which is composed of a bolt and a rotator is arranged in an inner cavity of the fusion cage main body, wherein the rotator is connected with the fusion cage main body through the bolt. The bolt can be rotated by an implant tool, and therefore the rotator can rotate and realize locking on the necessary position. A cusp part of the rotator clamps an upper centrum and a lower centrum to avoid that the fusion cage slides out of the space between the centrums. The upper and the lower surfaces of the lumbar fusion cage are in wedge shape and are provided with anti-slide teeth. Screw holes which are through from front and back and a plurality of open holes are arranged in the lateral wall of the main body. The lumbar fusion cage has the advantages of being simple and reasonable in design structure, high in stability, small in risk, and favorable to surgery operation and avoiding that the lumbar fusion cage slides and shifts after being implanted into a human body.
Description
One, technical field
This utility model belongs to medical instruments field, is specifically related to a kind of novel Invasive lumbar fusion device.
Two, background technology
Cervical spondylosis is commonly encountered diseases, the frequently-occurring disease of mid-aged population, and along with the change of people life style, its sickness rate also improves year by year, and presents the trend of rejuvenation.Late 1950s Smith and Robinson propose the anterior cervical decompression fusion and treat cervical spondylosis, cause the pressure thing owing to directly removing spinal cord the place ahead, spinal cord and nerve root are reduced pressure, obtained good therapeutic effect, the anterior cervical decompression fusion has developed into the standard procedures for the treatment of cervical spondylosis.
At present, the structure of conventional Invasive lumbar fusion device is generally the column of a hollow, and its upper and lower surface design becomes anti-skid structure, increase frictional resistance, prevent the movement of Invasive lumbar fusion device, and contact with upper and lower vertebral body respectively, to keep intervertebral height, its hollow space is used for bone grafting.Its sidewall is provided with several holes, is used for reducing the stress shielding to bone graft, promotes interbody bone to merge.In actual use, there are some defectives in the Invasive lumbar fusion device of general type, may occur the problems such as in various degree sinking, slip and bone fusion rate be low after the several years such as instant poor stability, implant into body.
Three, utility model content
The purpose of this utility model is to improve existing Invasive lumbar fusion device in the defective on structural design and deficiency, provide behind a kind of implant into body can stable existence novel Invasive lumbar fusion device.
The purpose of this utility model is achieved through the following technical solutions:
A kind of novel Invasive lumbar fusion device, comprise the fusion device main body, it is characterized in that: be provided with the rotatable fixture that is formed by bolt and rotor in the main body inner chamber, wherein rotor links together by bolt and fusion device main body, can make the rotor rotation and realize locking in the position of needs by the implanting instrument swivel bolt.
Rotor described in the utility model is comprised of two parts, wherein a part by self end with hollow bolt and fusion device main body link together; Described rotor is crescent, its cusp position is used for blocking hypocentrum, when carrying out cervical operation, at first this utility model fusion device is implanted to intervertebral space, then a word or the cross recess of rotating bolt head, rotor is rotated to an angle, and this moment, hypocentrum was blocked at rotor cusp position, reached to prevent the effect of fusion device from sliding between vertebral body, being shifted.
The bolt described in the utility model screw thread of having got on the bus, its head is provided with a word or cross recess, and is convenient when operation and being used in conjunction with of implanting instrument.
The connecting screw hole that connects before and after this utility model main body wall is provided with and several perforates, described connecting screw hole and bolt are complementary, and are used for connecting bolt and fusion device main body; The purpose that the fusion device main body wall is provided with several perforates is for the stress shielding that reduces bone graft, promotes interbody bone to merge, and also can see through x-ray observation fusion device interplantation fusion situation to the marrow simultaneously.
This utility model main body upper and lower surface is wedge shape, and lower surface has a gradient of general 5-10 °, and upper and lower surface is equipped with anti-slop serrations, helps enhanced stability and recovers the original intervertebral height of human cervical spine and physiologic radian.
Novel Invasive lumbar fusion device described in the utility model, main body adopts polyether-ether-ketone (PEEK) material or the carbon fiber material of good biocompatibility to make, bolt and rotor adopt titanium alloy material to make, structural design is simple, reasonable, can not occur sliding, being shifted phenomenon behind the implant into body, stability is high during use, risk is little, operation technique is convenient.
Four, description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and below in conjunction with drawings and Examples this utility model is described in further detail, wherein
Fig. 1 is top view of the present utility model;
Fig. 2 is the combination schematic diagram of this utility model rotor 2 and 3;
Fig. 3 is side view of the present utility model;
Fig. 4 is the three-dimensional structure diagram of this utility model fusion device body.
Five, the specific embodiment
Shown in Fig. 1-4, a kind of novel Invasive lumbar fusion device comprises fusion device main body 1, rotor 2, rotor 3, bolt 4; The connecting screw hole 5 that connects before and after fusion device main body 1 sidewall is provided with is used for rotor 2 and rotor 3 are linked together with main body 1; Main body 1 sidewall is provided with perforate 6, is used for reducing the stress shielding to bone graft, promotes interbody bone to merge, and also can see through x-ray observation fusion device interplantation fusion situation to the marrow simultaneously; Main body 1 upper and lower surface is wedge shape, and is equipped with anti-slop serrations 7, helps enhanced stability and recovers the original intervertebral height of human cervical spine and physiologic radian.
As shown in Figure 2, this utility model rotor is comprised of rotor 2 and rotor 3, and wherein rotor 2 self end is with one section hollow bolt; Rotor 3 is fixed together with bolt 4, and can link together by bolt 4 with rotor 2; Opposite direction when rotor 2 and rotor 3 rotation; Bolt 4 screw thread of having got on the bus, its head is provided with a word or cross recess, and is convenient when operation and being used in conjunction with of implanting instrument.
As shown in the figure, when carrying out cervical operation, at first this utility model fusion device is implanted to the human body intervertebral space, then respectively swivel bolt 4 and rotor 2 self end with a word or the cross recess of bolt head, make rotor 2 and rotor 4 backward rotation, hypocentrum is blocked at the cusp position 8 of rotor 2 and rotor 3, then rotor is locked in this position, prevents the effect of fusion device from sliding between vertebral body, being shifted thereby reach.
Obviously, above-described embodiment only is for this utility model clearly is described, and be not restriction to embodiment of the present utility model, this utility model Invasive lumbar fusion device not only can be used for cervical operation, also can be used for the spinal operations such as human body thoracic vertebra, lumbar vertebra.
Claims (5)
1. an Invasive lumbar fusion device comprises the fusion device main body, it is characterized in that: be provided with the rotatable fixture that is comprised of bolt and rotor in the main body inner chamber, wherein rotor links together by bolt and fusion device main body.
2. Invasive lumbar fusion device as claimed in claim 1, it is characterized in that: rotor is comprised of two parts, wherein a part by self end with hollow bolt and fusion device main body link together.
3. Invasive lumbar fusion device as claimed in claim 1, it is characterized in that: rotor is crescent.
4. Invasive lumbar fusion device as claimed in claim 1 is characterized in that: the bolt screw thread of having got on the bus, its head is provided with a word or cross recess.
5. Invasive lumbar fusion device as claimed in claim 1 is characterized in that: the connecting screw hole that connects before and after main body wall is provided with and several perforates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204250110U CN202699351U (en) | 2012-08-24 | 2012-08-24 | Lumbar fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204250110U CN202699351U (en) | 2012-08-24 | 2012-08-24 | Lumbar fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202699351U true CN202699351U (en) | 2013-01-30 |
Family
ID=47579700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204250110U Expired - Lifetime CN202699351U (en) | 2012-08-24 | 2012-08-24 | Lumbar fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202699351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105287061A (en) * | 2015-12-01 | 2016-02-03 | 四川大学华西医院 | Interface type interbody fusion cage |
-
2012
- 2012-08-24 CN CN2012204250110U patent/CN202699351U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105287061A (en) * | 2015-12-01 | 2016-02-03 | 四川大学华西医院 | Interface type interbody fusion cage |
| CN105287061B (en) * | 2015-12-01 | 2017-08-25 | 四川大学华西医院 | A kind of interfacial type Invasive lumbar fusion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |