CN210843632U - Femoral head expansion support - Google Patents
Femoral head expansion support Download PDFInfo
- Publication number
- CN210843632U CN210843632U CN201921673565.0U CN201921673565U CN210843632U CN 210843632 U CN210843632 U CN 210843632U CN 201921673565 U CN201921673565 U CN 201921673565U CN 210843632 U CN210843632 U CN 210843632U
- Authority
- CN
- China
- Prior art keywords
- femoral head
- fixed ring
- fixed column
- nut
- ring
- 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 - Fee Related
Links
- 239000007787 solid Substances 0.000 claims abstract description 6
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 4
- 230000017074 necrotic cell death Effects 0.000 abstract description 7
- 108010048734 sclerotin Proteins 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012567 medical material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000002082 fibula Anatomy 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000005065 subchondral bone plate Anatomy 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model discloses a femoral head expansion support ware, it is including a preceding solid fixed ring and a back fixed ring, the periphery of front and back solid fixed ring is respectively with the titanium-nickel alloy support bar of round pin axle in the intermediate junction with 6-8 equipartitions, sliding fit installs a fixed column in the mesopore of back fixed ring in preceding solid fixed ring, an M5 nut is installed to the mesopore female screw fit of fixed column in the outer end of back fixed ring, it has a sleeve wrench to be equipped with backward on the polygon outer wall of M5 nut, it is equipped with one and sends into the guide arm to stretch out backward on the fixed column in the sleeve wrench, be equipped with direction key and guide way between fixed column and the screw wall of M5 nut respectively between fixed column and direction wrench and between the fixed column and the screw. The utility model discloses not only can make the femoral head of necrosis obtain effective support, realized making it and sclerotin around combine together fast moreover, reduceed the femoral head probability of caving greatly, have convenient operation, labour saving and time saving, safe effectual advantage.
Description
Technical Field
The utility model relates to a medical appliance, in particular to a femoral head expansion support which is suitable for filling and supporting in a femoral head necrosis area after an orthopedic femoral head necrosis medullary core decompression operation.
Background
At present, after early femoral head necrosis medullary core decompression operation at home and abroad, a metal rod for filling support, an autologous fibula, a metal cage and an umbrella-shaped memory alloy support cannot obtain enough effective mechanical support in a femoral head necrosis area, the femoral head collapse still occurs too early after the operation, and the long-term effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a femoral head expansion support used for the decompression operation of the medullary core of early femoral head necrosis, which ensures that the subchondral bone plate has enough supporting force, prevents collapse and delays hip joint replacement.
The technical scheme of the utility model is accomplished in following mode, it is including a preceding solid fixed ring and a back fixed ring, its characterized in that: 6-8 uniformly distributed titanium-nickel alloy support bars are connected to the peripheries of the front fixing ring and the rear fixing ring respectively through pin shafts in the middle, a fixing column is installed in the middle hole of the front fixing ring in a sliding fit mode towards the middle hole of the rear fixing ring, an M5 nut is installed at the outer end of the rear fixing ring in a threaded fit mode towards the middle hole of the fixing column, a sleeve spanner is installed on the polygonal outer wall of the M5 nut backwards, a feeding guide rod is installed on the fixing column in the sleeve spanner in a protruding mode backwards, and a guide key and a guide groove are arranged between the fixing column and the guide spanner and between the fixing column and the threaded wall of the M5.
The utility model discloses not only can make the femoral head of necrosis obtain effective support, realized making it and sclerotin around combine together fast moreover, reduceed the femoral head probability of caving greatly, have convenient operation, labour saving and time saving, safe effectual advantage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention; fig. 2 is a schematic structural diagram of the utility model after expansion.
Detailed Description
The embodiment is described in detail with reference to the attached drawings, and comprises a front fixing ring 1 and a rear fixing ring 4, wherein 6-8 uniformly distributed titanium-nickel alloy support bars 2 are respectively connected with the peripheries of the front fixing ring and the rear fixing ring through pin shafts in the middle, a fixing column 3 is arranged in a middle hole of the front fixing ring in a sliding fit mode towards the middle hole of the rear fixing ring, an M5 nut 6 is arranged at the outer end of the rear fixing ring in a fit mode towards the middle hole of the fixing column through internal threads, a sleeve spanner 7 is arranged on the polygonal outer wall of the M5 nut backwards, a feeding guide rod 9 extends backwards from the fixing column in the sleeve spanner and is arranged on the fixing column, and guide keys 8 and guide grooves 5 are respectively arranged between the fixing column and the guide spanner and between the.
The utility model discloses a material adopts high strength medical material, like titanium alloy, nickel titanium shape memory alloy, tantalum metal makes, earlier make the eyelidretractor trun into the cylindricality by the inflation sphere through temperature control during the use, its purpose reduces the marrow way diameter, reduce the wound, make the eyelidretractor inflation in order to reach the support purpose after arriving the operation position, can effectively prevent that the femoral head from collapsing, adopt high strength medical material and memory alloy top layer, be favorable to making the sclerotin grow into the supporter tantalum metal coating fast, make the supporter melt together with the femoral head fast. After the operation is finished, the socket wrench is taken down and the sleeve wrench is fed into the guide rod, and the operation is carried out by comparing M5 nuts in the process, so that the purposes of controlling the expansion of the support, reducing the operation wound area and preventing the collapse of the femoral head after the medullary core decompression are achieved.
Claims (1)
1. The utility model provides a femoral head inflation eyelidretractor, it is including a preceding solid fixed ring and a back solid fixed ring, its characterized in that: 6-8 uniformly distributed titanium-nickel alloy support bars are connected to the peripheries of the front fixing ring and the rear fixing ring respectively through pin shafts in the middle, a fixing column is installed in the middle hole of the front fixing ring in a sliding fit mode towards the middle hole of the rear fixing ring, an M5 nut is installed at the outer end of the rear fixing ring in a threaded fit mode towards the middle hole of the fixing column, a sleeve spanner is installed on the polygonal outer wall of the M5 nut backwards, a feeding guide rod is installed on the fixing column in the sleeve spanner in a protruding mode backwards, and a guide key and a guide groove are arranged between the fixing column and the guide spanner and between the fixing column and the threaded wall of the M5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673565.0U CN210843632U (en) | 2019-10-09 | 2019-10-09 | Femoral head expansion support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673565.0U CN210843632U (en) | 2019-10-09 | 2019-10-09 | Femoral head expansion support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210843632U true CN210843632U (en) | 2020-06-26 |
Family
ID=71295144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921673565.0U Expired - Fee Related CN210843632U (en) | 2019-10-09 | 2019-10-09 | Femoral head expansion support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210843632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110680560A (en) * | 2019-10-09 | 2020-01-14 | 新乡市中心医院(新乡中原医院管理中心) | Femoral head expansion support |
-
2019
- 2019-10-09 CN CN201921673565.0U patent/CN210843632U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110680560A (en) * | 2019-10-09 | 2020-01-14 | 新乡市中心医院(新乡中原医院管理中心) | Femoral head expansion support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |