CN201208293Y - Osteonecrosis decompression repair nail - Google Patents
Osteonecrosis decompression repair nail Download PDFInfo
- Publication number
- CN201208293Y CN201208293Y CNU2008200670643U CN200820067064U CN201208293Y CN 201208293 Y CN201208293 Y CN 201208293Y CN U2008200670643 U CNU2008200670643 U CN U2008200670643U CN 200820067064 U CN200820067064 U CN 200820067064U CN 201208293 Y CN201208293 Y CN 201208293Y
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- nail
- micropore
- osteonecrosis
- cylindrical hollow
- decompression
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Abstract
The utility model provides a pressure reducing restoration nail for femoral head necrosis. The nail is a columnar hollow nail. The utility model is characterized in that external threads used for finxing are formed at the tail part of the columnar hollow nail, and a nut structure matched with the threads is arranged at the tail part; a plurality of micro-pores uniformly distributed in the circumferential direction are vertically arranged on the surface of the columnar hollow nail, wherein, the diameter of each micro-pore ranges from 0.4 to 1.2 millimeters; and the micro pores are communicated with the hollow hole of the columnar hollow nail so as to allow the pressure within the femoral head to be reduced, and provide a passage for placing stem cells in the femoral head. Therefore, the restoration of affected femoral head can be facilitated, and the collapse can be avoided.
Description
Technical field
This utility model belongs to medical field, relates to a kind of osteonecrosis decompression and repairs nail.
Background technology
Ischemic necrosis of femoral head is a kind of chronic progressive external disabling condition of hiding onset, the early treatment is most important, present Therapeutic Method mainly comprise core decompression art, vascular pedicle or anastomosis of blood vessel from body bone or periosteum transplantation, do not implant and various osteotomies etc. keep capital modus operandi with autologous bone transplanting art, interventional therapy, the vascular bundle of blood vessel.But up to the present,,, also there is not a kind of method preferably to reverse when in a single day osteonecrosis takes place no matter be how to treat.In recent years adopt core decompression to add the porous tantalum metal implant abroad and treat early stage femur head necrosis, can finish under less invasive techniques and not have for the district is sick and decrease, early stage clinical effectiveness shows no chronic systemic disease person, and especially the early lesion person has challenging survival rate.
The characteristics of external porous tantalum screw: diameter 10mm, have the porosity (80 ℅) of high volume and the hole that communicates fully, allow reliably to grow into bone fast, it is a structural material, implant has the intensity of enough bearing physiological stress.Its significant feature is that the pressure that continues to reduce in the femoral head but can't have the osteoblast of function to promote the reparation of necrotic bone to the affected area input.Atraumatic ischemic necrosis of femoral head pathological characteristic is because the minimizing of near end of thighbone mesenchymal cell quantity can not provide competent osteoblast to finish building again of bone, simultaneously osteoblastic replication capacity descends and to cause new bone formation slow, it is slow for self-regeneration process blood vessel is taken place with new bone formation to lack osteoprogenitor cells and the blood built again, finally causes subsiding.
Summary of the invention
The blood vessel that causes for fear of the porous tantalum screw takes place and new bone formation defective slowly, the utility model proposes a kind of osteonecrosis decompression and repairs nail, the reparation that further improves osteonecrosis.
For this reason, the technical solution of the utility model is: nail is repaired in the osteonecrosis decompression, it is a cylindrical hollow nail, cylindrical hollow nail afterbody is provided with the external screw thread that is used for fixing and is used to screw in the nut structure of screw thread, it is characterized in that: described cylindrical hollow nail surface is provided with along a plurality of micropores circumferential uniform and that vertically arrange, and the diameter of micropore is 0.4-1.2mm; Described micropore communicates with the hollow hole of cylindrical hollow nail.
Beneficial effect: the surface that nail is repaired in this osteonecrosis decompression is provided with micropore and communicates with the hollow hole at center, it has two effects: the one, reduce the pressure in the femoral head, and two provide the passage that stem cell is inserted, these 2 reparations that all help osteonecrosis, accelerate repair process, avoid subsiding.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, it is as follows to further describe this utility model: nail is repaired in the osteonecrosis decompression, it is a cylindrical hollow nail 1, cylindrical hollow is followed closely the nut structure 3 that 1 afterbody is provided with the external screw thread 2 that is used for fixing and is used to screw in screw thread, described cylindrical hollow is followed closely 1 surface and is provided with along a plurality of micropores 4 circumferential uniform and that vertically arrange, and micropore 4 communicates with the hollow hole 5 of cylindrical hollow nail.
Nail is repaired in osteonecrosis decompression as shown in Figure 1, and its external diameter is generally 4.5-6.5mm, and the diameter of hollow hole 5 is 1.5-2.5mm; The diameter of micropore 4 is 0.8-1.2mm, and vertical arrangement pitches of micropore 4 is identical, and distance is 3-4mm.
The material that nail is repaired in the osteonecrosis decompression is the titanium aluminum vitriol alloy or the tantalum of at present extensive implant into body.
As shown in Figure 1, vertical arrangement pitches of micropore 4 is identical, and this is a kind of vertical arranging situation of micropore 4.Vertical arrangement of micropore 4 also can be following mode: following closely 1 head from cylindrical hollow is 3-4mm to vertical arrangement pitches of the micropore 4 at middle part, and following closely 1 middle part from cylindrical hollow is 4-10mm to vertical arrangement pitches of the micropore 4 of afterbody.
As shown in Figure 1, there is not groove between the micropore of vertically arranging 4.Also can be respectively be provided with the cannelure that the degree of depth is 0.1-0.3mm following closely the micropore 4 aperture correspondence positions that 1 head vertically arranges point-blank to the middle part from cylindrical hollow, the stem cell of following closely 1 inner chamber for the injection cylindrical hollow provides a more unimpeded passage, makes things convenient for stem cell flowing between micropore.
Claims (4)
1, nail is repaired in the osteonecrosis decompression, it is a cylindrical hollow nail, cylindrical hollow nail afterbody is provided with the external screw thread that is used for fixing and is used to screw in the nut structure of screw thread, it is characterized in that: described cylindrical hollow nail surface is provided with along a plurality of micropores circumferential uniform and that vertically arrange, and the diameter of micropore is 0.6-1.2mm; Described micropore communicates with the hollow hole of cylindrical hollow nail.
2, nail is repaired in osteonecrosis decompression according to claim 1, and it is characterized in that: its external diameter is generally 4.5-6.5mm, and hollow hole (5) is 1.5-2.5mm; The diameter of micropore (4) is 0.8-1.2mm, and vertical arrangement pitches of micropore (4) is 3-4mm.
3, nail is repaired in osteonecrosis decompression according to claim 1, and it is characterized in that: its external diameter is generally 4.5-6.5mm, and hollow hole (5) is 1.5-2.5mm; The diameter of micropore (4) is 0.8-1.2mm, and the vertical arrangement pitches from cylindrical hollow nail (1) head to the micropore (4) at middle part is 3-4mm, and the vertical arrangement pitches from cylindrical hollow nail (1) middle part to the micropore (4) of afterbody is 4-10mm.
4, repair nail according to claim 2 or 3 described osteonecrosis decompressions, it is characterized in that: be provided with the cannelure that the degree of depth is 0.1-0.3mm at the micropore aperture correspondence position of vertically arranging point-blank to the middle part from the cylindrical hollow nail head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200670643U CN201208293Y (en) | 2008-05-12 | 2008-05-12 | Osteonecrosis decompression repair nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200670643U CN201208293Y (en) | 2008-05-12 | 2008-05-12 | Osteonecrosis decompression repair nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201208293Y true CN201208293Y (en) | 2009-03-18 |
Family
ID=40479017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200670643U Expired - Fee Related CN201208293Y (en) | 2008-05-12 | 2008-05-12 | Osteonecrosis decompression repair nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201208293Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107510522A (en) * | 2017-08-22 | 2017-12-26 | 深圳维度生物医疗科技有限公司 | A kind of hollow porous titanium femoral head support stick with gradual-change bore diameter and porosity |
| CN109464220A (en) * | 2017-09-08 | 2019-03-15 | 重庆润泽医药有限公司 | A kind of tantalum stick for medical surgery |
| CN109481089A (en) * | 2017-09-13 | 2019-03-19 | 重庆润泽医药有限公司 | A kind of porous tantalum tantalum stick |
| CN109512551A (en) * | 2017-09-19 | 2019-03-26 | 重庆润泽医药有限公司 | A kind of side wall and bottom have the tantalum stick of pressurizing unit |
| CN109512553A (en) * | 2017-09-19 | 2019-03-26 | 重庆润泽医药有限公司 | A kind of side wall has the tantalum stick of pressing device |
| CN109512552A (en) * | 2017-09-19 | 2019-03-26 | 重庆润泽医药有限公司 | A kind of side wall has the tantalum stick of pressurizing unit |
-
2008
- 2008-05-12 CN CNU2008200670643U patent/CN201208293Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107510522A (en) * | 2017-08-22 | 2017-12-26 | 深圳维度生物医疗科技有限公司 | A kind of hollow porous titanium femoral head support stick with gradual-change bore diameter and porosity |
| CN109464220A (en) * | 2017-09-08 | 2019-03-15 | 重庆润泽医药有限公司 | A kind of tantalum stick for medical surgery |
| CN109481089A (en) * | 2017-09-13 | 2019-03-19 | 重庆润泽医药有限公司 | A kind of porous tantalum tantalum stick |
| CN109512551A (en) * | 2017-09-19 | 2019-03-26 | 重庆润泽医药有限公司 | A kind of side wall and bottom have the tantalum stick of pressurizing unit |
| CN109512553A (en) * | 2017-09-19 | 2019-03-26 | 重庆润泽医药有限公司 | A kind of side wall has the tantalum stick of pressing device |
| CN109512552A (en) * | 2017-09-19 | 2019-03-26 | 重庆润泽医药有限公司 | A kind of side wall has the tantalum stick of pressurizing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 |