CN201602866U - Adjustable vertebral body replacement fusion cage - Google Patents
Adjustable vertebral body replacement fusion cage Download PDFInfo
- Publication number
- CN201602866U CN201602866U CN2009202648761U CN200920264876U CN201602866U CN 201602866 U CN201602866 U CN 201602866U CN 2009202648761 U CN2009202648761 U CN 2009202648761U CN 200920264876 U CN200920264876 U CN 200920264876U CN 201602866 U CN201602866 U CN 201602866U
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- screw
- nut
- vertebral body
- tooth
- fusion device
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Abstract
The utility model discloses an adjustable vertebral body replacement fusion cage, which comprises a sleeve, a nut and a hollow screw. The lower end face of the sleeve is provided with teeth, the wall of the sleeve is provided with through holes, the nut is mounted at the upper end of the sleeve, the upper end face of the screw is provided with teeth, the wall of the screw is provided with through holes, the lower end of the screw penetrates through the nut to extend into the sleeve, the screw is connected with the nut in a threaded manner, and the screw is formed by at least two screw sections detachably connected. Fusion height can be optionally adjusted by changing numbers of the screw sections of the fusion cage, the bracing fusion height is not limited by bone defects or heavily damaged bone, and accordingly the fusion cage has large bone grafting volume and fine grafted bone continuity, and is favorable for fusion of vertebral bodies. Additionally, the fuse cage has the advantages of simple operational process and secure implantation process.
Description
[technical field]
This utility model relates to a kind of spinal column localizer or regulator, especially a kind of scalable vertebral body prosthesis fusion device.
[background technology]
In daily life, completely or the case that causes spinal vertebral to damage owing to reasons such as tumor, fracture, infection of part happen occasionally.When these patients of treatment, the mode that adopts is to implant the Invasive lumbar fusion device of a regular length between the vertebral body that damages at present, makes osseous tissue produce creeping substitution, thereby repairs the vertebral body that damages.The Invasive lumbar fusion device of this regular length is pre-prepd before patient treatment, in operative treatment, repair Invasive lumbar fusion device according to the physical length of damaging vertebral body, then it is implanted the vertebral body position of damaging, therefore, in operation, the complicated operation of finishing Invasive lumbar fusion device, the used time is long, brings misery to the patient.For this reason, Chinese patent CN201085669 discloses a kind of " nut adjustable type Invasive lumbar fusion device ", is made up of pedestal, nut, screw rod, guide finger and lock-screw, is provided with tooth in the lower surface of pedestal, and be provided with through hole at Qi Bishang, in the upper end of this pedestal nut is housed; The upper surface of described screw rod is provided with tooth, and be provided with through hole at Qi Bishang, the lower end of this screw rod is passed nut and is stretched in the sleeve, and this cored screw is connected with nut thread, regulate the height of Invasive lumbar fusion device by swivel nut, yet there is following defective in this Invasive lumbar fusion device: the length of (1) screw rod is fixed, so the adjustable extent of Invasive lumbar fusion device is limited, can not be used for the occasion that bone is damaged or osteoclasia is excessive or too small; (2) on the nut circumference, be provided with 4 holes, during the adjusting screw(rod) height, insert in the hole, pull driving lever and come swivel nut, inconvenient operation with driving lever; (3) Invasive lumbar fusion device is installed earlier again and fill bone by the through hole of pedestal and screw rod, filling speed is slow, and easily causes bone grafting discontinuous and influence the long-term effect that bone grafting heals.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of scalable vertebral body prosthesis fusion device that can regulate altitude range arbitrarily.
To achieve these goals, the technical solution adopted in the utility model is: a kind of scalable vertebral body prosthesis fusion device, comprise sleeve, nut and cored screw, and telescopic lower surface is provided with tooth, and be provided with through hole at Qi Bishang, in this telescopic upper end described nut is housed; The upper surface of described screw rod is provided with tooth, and is provided with through hole at Qi Bishang, and the lower end of this screw rod is passed nut and stretched in the sleeve, and this screw rod is connected with nut thread, and its key is: described screw rod is made of the removable two joint spiro rod sections that are linked together at least.
After adopting technique scheme, can regulate arbitrarily by the joint number that changes the fusion device spiro rod section and to merge height, it is highly not damaged or osteoclasia is excessive and restricted because of bone that it struts fusion.
In the technique scheme, described removable connection is for being threaded or clamping, perhaps other releasable connection.
As the preferred embodiment of technique scheme, be provided with tooth in the lower surface of described nut; Radially be provided with the lift adjustment groove in described telescopic upper surface, in this lift adjustment groove, lifting regulating rod be housed, be circumferentially with tooth, the tooth engagement of this tooth and described nut lower surface in this lifting regulating rod upper edge.Drive the nut rotation by the rotation and lifting adjusting rod, and then screw rod is risen, have advantage easy to adjust.
As another preferred embodiment of technique scheme, be axially arranged with gathering hole in described telescopic wall upper edge, the door of slip is installed, in order to described door is closed at this gathering hole place.By this gathering hole spiro rod section is connected, satisfying desired height, but also can in fusion device, add bone by this gathering hole, easy to operate.
Another preferred embodiment as technique scheme is provided with tooth in the lower surface of each described spiro rod section, so that in sleeve spiro rod section is linked together.
For convenience fusion device is put into patient's body, on described telescopic outer wall, radially be provided with cylindrical clamping part.
Center at described clamping part radially is provided with screw, and the lock-screw that is used to lock described screw rod is housed in this screw, rocks to avoid screw rod.
Compared with prior art, the utility model has the advantages that:
(1) regulate arbitrarily by the joint number that changes the fusion device spiro rod section and merge height, it is highly not damaged or osteoclasia is excessive and restricted because of bone that it struts fusion;
(2) the bone grafting amount is big and the bone grafting seriality is good, helps merging between vertebral body;
(3) operating process simple, insert process safety, and change implantation site and angle according to the operation purpose down in that perspective is auxiliary;
(4) as the capable revision procedure of need, it is easy to take out this vertebral body prosthesis fusion device, need not enlarge the vertebral resection area, reduces patient's wound as far as possible.
[description of drawings]
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is to view along the A among Fig. 1.
[specific embodiment]
Below in conjunction with drawings and Examples this utility model is elaborated.
Referring to Fig. 1, the scalable vertebral body prosthesis fusion device of present embodiment mainly is made up of sleeve 12, nut 3 and cored screw.On the upper surface of the lower surface of sleeve 12 and screw rod, be respectively equipped with tooth 7,8, so that fusion device and vertebral body contact surface have good stability.On the sidewall of sleeve 12 and screw rod, have hole 15,2, so that fill bone.Nut 3 is installed in the upper end of sleeve 12, and the lower end of screw rod is passed nut 3 and stretched in the sleeve 12, and this screw rod is threaded with nut 3, regulates the height of fusion devices by swivel nut 3.In order to adapt to different patients' needs, screw rod of the present utility model is made of the removable more piece spiro rod section that is linked together, and the order of severity of or osteoclasia damaged according to patient's bone during use is selected the joint number of spiro rod section.Adopt upper and lower two joint spiro rod sections 9,13 through being threaded togather in the present embodiment, wherein be provided with the bigger termination of diameter 1, to increase the contact area of screw rod and vertebral body in the upper end of last spiro rod section 9.Can certainly adopt the clamping connected mode, this is conspicuous for a person skilled in the art.
For easy to operate, be equipped with tooth 5,6 in the lower surface of each spiro rod section 9,13, can drive spiro rod section 9,13 rotations by stirring this tooth 5,6.Wall upper edge at sleeve 12 is axially arranged with gathering hole, the door 14 that is used for the shutoff operation mouth is installed at this gathering hole place, this upper and lower side of 14 is equipped with slide rail, is provided with chute accordingly with slide rail in sleeve 12, can be free to slide in sleeve 12 by slide rail and chute door 14.
When the damaged sections of vertebral body long, when needing to increase spiro rod section, insert in the sleeve 12 from gathering hole together after being fixed on the spiro rod section that increases on the elasticity dilator, the spiro rod section that unclamping the promotion of elasticity dilator then increases rises and a last joint spiro rod section docks, the screw that will be circumferentially with tooth then is placed between spiro rod section and the elasticity dilator, and tooth and the tooth on the spiro rod section on the screw are meshed, driving the spiro rod section rotation that increases by rotary screw fixes itself and a last joint spiro rod section, take out behind the elasticity dilator bone grafting in sleeve 12 again, close door 14 after bone grafting finishes.
Adjusting screw(rod) is provided with the worm and gear governor motion between nut 3 and sleeve 12 for convenience, sees Fig. 2.The worm and gear governor motion by the tooth 4 of nut 3 lower surfaces and be contained in sleeve 12 and nut 3 between lifting regulating rod 17 constitute, be circumferentially with tooth 16 in these lifting regulating rod 17 upper edges, tooth 4 engagements of this tooth 16 and nut lower surface.Drive nut 3 rotations by rotation and lifting adjusting rod 17, and then screw rod is risen, have advantage easy to adjust.
On the outer wall of sleeve 12, radially be provided with cylindrical clamping part 10, center at this clamping part 10 radially is provided with screw, and lock-screw 11 is housed in this screw, after the altitude mixture control of fusion device is good, rotational lock screw 11 can not rock it screw rod locking.
The above only is preferred embodiment of the present utility model, and protection domain of the present utility model is not limited thereto, and anyly all belongs within this utility model protection domain based on the equivalent transformation on the technical solutions of the utility model.
Claims (7)
1. a scalable vertebral body prosthesis fusion device comprises sleeve, nut and cored screw, and telescopic lower surface is provided with tooth, and is provided with through hole at Qi Bishang, in this telescopic upper end described nut is housed; The upper surface of described screw rod is provided with tooth, and is provided with through hole at Qi Bishang, and the lower end of this screw rod is passed nut and stretched in the sleeve, and this screw rod is connected with nut thread, it is characterized in that: described screw rod is made of the removable two joint spiro rod sections that are linked together at least.
2. scalable vertebral body prosthesis fusion device according to claim 1 is characterized in that: described removable connection is for being threaded or clamping.
3. scalable vertebral body prosthesis fusion device according to claim 1, it is characterized in that: the lower surface at described nut is provided with tooth; Radially be provided with the lift adjustment groove in described telescopic upper surface, in this lift adjustment groove, lifting regulating rod be housed, be circumferentially with tooth, the tooth engagement of this tooth and described nut lower surface in this lifting regulating rod upper edge.
4. scalable vertebral body prosthesis fusion device according to claim 1 is characterized in that: be axially arranged with gathering hole in described telescopic wall upper edge, the door of slip is installed at this gathering hole place, in order to described door is closed.
5. scalable vertebral body prosthesis fusion device according to claim 1, it is characterized in that: the lower surface at each described spiro rod section is provided with tooth.
6. according to the arbitrary described scalable vertebral body prosthesis fusion device of claim 1～5, it is characterized in that: on described telescopic outer wall, radially be provided with cylindrical clamping part.
7. scalable vertebral body prosthesis fusion device according to claim 1 is characterized in that: the center at described clamping part radially is provided with screw, and the lock-screw that is used to lock described screw rod is housed in this screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202648761U CN201602866U (en) | 2009-12-21 | 2009-12-21 | Adjustable vertebral body replacement fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202648761U CN201602866U (en) | 2009-12-21 | 2009-12-21 | Adjustable vertebral body replacement fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201602866U true CN201602866U (en) | 2010-10-13 |
Family
ID=42947572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202648761U Expired - Lifetime CN201602866U (en) | 2009-12-21 | 2009-12-21 | Adjustable vertebral body replacement fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201602866U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488574A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院深圳先进技术研究院 | Interbody fusion cage |
| CN106963521A (en) * | 2017-04-10 | 2017-07-21 | 北京大学人民医院 | One kind can extend assembly type artificial vertebral body in vivo |
| CN107157628A (en) * | 2017-03-29 | 2017-09-15 | 常州华森医疗器械有限公司 | One kind can strut medical titanium cage |
| CN110141403A (en) * | 2019-05-24 | 2019-08-20 | 中南大学湘雅三医院 | Telescopic vertebrae mixer |
-
2009
- 2009-12-21 CN CN2009202648761U patent/CN201602866U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488574A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院深圳先进技术研究院 | Interbody fusion cage |
| CN102488574B (en) * | 2011-12-09 | 2014-12-24 | 中国科学院深圳先进技术研究院 | Interbody fusion cage |
| CN107157628A (en) * | 2017-03-29 | 2017-09-15 | 常州华森医疗器械有限公司 | One kind can strut medical titanium cage |
| CN106963521A (en) * | 2017-04-10 | 2017-07-21 | 北京大学人民医院 | One kind can extend assembly type artificial vertebral body in vivo |
| CN110141403A (en) * | 2019-05-24 | 2019-08-20 | 中南大学湘雅三医院 | Telescopic vertebrae mixer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160623 Address after: Rui building Luo Sha Development Zone 527300 Guangdong province Yunfu city 7 floor, No. 702 Patentee after: Yunfu good care medical Polytron Technologies Inc Address before: 510515, No. 1063, Sha Tai Road, Jing Jing District, Baiyun District, Guangdong, Guangzhou Patentee before: Zheng Minghui |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170222 Address after: Guangdong province Dongguan City Gaobu town 523000 three Tang Lu Sun Science and Technology Park A Building 2 floor B District Patentee after: Guangdong good care medical Polytron Technologies Inc Address before: Rui building Luo Sha Development Zone 527300 Guangdong province Yunfu city 7 floor, No. 702 Patentee before: Yunfu good care medical Polytron Technologies Inc |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |
|
| CX01 | Expiry of patent term |