CN202288427U - X-shaped reamer for ONFH (osteonecrosis of the femeral head) treatment - Google Patents
X-shaped reamer for ONFH (osteonecrosis of the femeral head) treatment Download PDFInfo
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- CN202288427U CN202288427U CN2011204041962U CN201120404196U CN202288427U CN 202288427 U CN202288427 U CN 202288427U CN 2011204041962 U CN2011204041962 U CN 2011204041962U CN 201120404196 U CN201120404196 U CN 201120404196U CN 202288427 U CN202288427 U CN 202288427U
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- shaped reamer
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Abstract
The utility model belongs to medical devices, and particularly discloses an X-shaped reamer for ONFH (osteonecrosis of the femeral head) treatment. The X-shaped reamer for ONFH treatment comprises a connecting rod and two blades and is characterized in that the two blades and the head part of the connecting rod are fixed together by virtue of a half-round-head screw, a spring leaf and a gasket so as to form an expandable device of which the expanded size can be adjusted. The head part of each blade of the X-shaped reamer is provided with an arc-shaped cutting edge, and the tail end of each blade is set as a V-shaped tail part; the V-shaped tail parts of the blades are pushed by aid of a tool, so that the head parts of the blades are expanded, and when the X-shaped reamer is required to exit, by aid of the tool, the cutting edges can be narrowed automatically under the action of the spring leaf. The two blades of the X-shaped reamer are completely consistent in shape and size and opposite in installing direction. The X-shaped reamer provided by the utility model can be used for removing necrotic bones from a small incision at will, so that the X-shaped reamer for ONFH treatment has the advantages of small trauma, simple operation, quick postoperative recovery and the like, and is especially suitable for being applied to young patients with ONFH.
Description
Technical field
This utility model belongs to medical mechanical domain, specifically is a kind of X-shaped reamer of treating femur head necrosis.
Background technology
Femur head necrosis is claimed ischemic necrosis of femoral head or aseptic necrosis of femoral head again, is a kind of comparatively common osteoarthritis.Because of rheumatism, hematopathy, bends, extensive application hormone, drink etc. and to cause for a long time, destroy the blood supply of adjacent joints covering weave earlier, and then cause necrosis mostly.The cardinal symptom of femur head necrosis develops into rest pain gradually from discontinuity pain, again by pain cause muscle spasm, joint motion is restricted, cause at last seriously to disable and walk lamely.The treatment of the early metaphase of femur head necrosis is the difficult problem that present orthopaedics faces, though its Therapeutic Method is many, curative effect is all not too satisfied, often further develops to subsiding or already present subsiding further increased the weight of, and finally has to carry out hip replacement.Yet femur head necrosis patient is mostly occurred in 30～50 years old age group, be not suitable for carrying out too early total hip replacement, and total hip replacement is poor than other diseases to the curative effect of femur head necrosis.The femoral head Reconstruction that sequestrum is removed the bone mud filling is a kind of new technique of ANFH treatment in recent years; Its design principle is: after removing sequestrum; Fill defect with bone alternate material or bone cement etc., the cartilage surface that subsides is resetted, rebuild the rational femoral head of capital circular contour and rebuild; Preserve the hip joint of self, can exempt or postpone artificial joint replacement.But because after the femur head necrosis; Calcification causes the sclerotin hardening in the femoral head, adds to lack the instrument of removing downright bad sclerotin that is specifically designed to, and the doctor only depends on scraper to go deep into removing very difficulty to the os osseum matter of calcification in the bone hole when operation; Big to the human body wound, recover slow, operating time is longer.
Summary of the invention
The purpose of this utility model is the deficiency to prior art, and the X-shaped reamer of the treatment femur head necrosis of passing through the downright bad bone of little otch optionally remove that a kind of wound is little, operation is simple, post-operative recovery is fast is provided.
This utility model adopts following technical scheme:
A kind of X-shaped reamer of treating femur head necrosis comprises connecting rod, two blades, it is characterized in that: two blades are fixed together through halfround head nail, spring leaf, packing ring and connecting rod head, strut the adjustable device for spreading of size but form.
The blade head of this utility model is provided with the arc milling sword, and the blade afterbody is provided with forming V-shape, promotes blade V-arrangement afterbody by instrument, and the blade head struts.When reamer need withdraw from, by instrument, can be under the effect of dependence spring leaf so that the edge of a knife dwindles automatically.
Shape, the size of this utility model two blades are in full accord, and installation direction is opposite.
This utility model connecting rod is rectangular, and afterbody is provided with U-lag, and convenience cooperates with instrument.
The femoral head X-shaped reamer that this utility model provides has advantages such as wound is little, operation is simple, post-operative recovery is fast through the downright bad bone of little otch optionally remove, is particularly useful for young femur head necrosis patient.
Description of drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the enlarged drawing of I portion among Fig. 1.
The specific embodiment
Contrast accompanying drawing below, this utility model is further described through embodiment.
Like Fig. 1 to Fig. 3, a kind of X-shaped reamer of treating femur head necrosis comprises connecting rod 1, two blades 2, halfround head nail 3, spring leaf 4 and packing rings 5, and connecting rod 1 is rectangular, and afterbody is provided with U-lag 6, the cooperating of convenient and instrument; Two blades 2 are fixed together with connecting rod 1 head through halfround head nail 3, spring leaf 4, packing ring 5, but form device for spreading, and strut size and can adjust.
This utility model blade 2 heads are provided with the arc milling sword, and afterbody is provided with forming V-shape, and by the V-arrangement afterbody of instrument promotion blade 2, blade 2 heads strut.When reamer need withdraw from, by instrument, can be under the effect of dependence spring leaf 4 so that the edge of a knife dwindles automatically.
Size, the shape of two blades 2 of this utility model are in full accord, and installation direction is opposite.
This utility model halfround head nail 3 axle heads are threaded, and packing ring 5 is provided with threaded interior hole, connect the whole circle welding in back, reliably connect to guarantee both.
The concrete method for using of this utility model is following: during operation; The doctor makes a call to a hole and puts into the X-shaped reamer on the femoral head of necrosis; Select electronic or manual mode makes X type reamer at the femoral head internal rotation; By the V-arrangement afterbody of instrument promotion blade 2, blade 2 heads strut, and the blade 2 after strutting removes downright bad sclerotin through rotation in femoral head.When reamer need withdraw from, by instrument, can be under the effect of dependence spring leaf 4 so that the edge of a knife dwindles automatically.
Claims (5)
1. an X-shaped reamer of treating femur head necrosis comprises connecting rod, two blades, it is characterized in that: two blades are fixed together through halfround head nail, spring leaf, packing ring and connecting rod head, strut the adjustable device for spreading of size but form.
2. the X-shaped reamer of treatment femur head necrosis according to claim 1 is characterized in that: the blade head is provided with the arc milling sword, and the blade afterbody is provided with forming V-shape.
3. the X-shaped reamer of treatment femur head necrosis according to claim 1 and 2 is characterized in that: shape, the size of two blades are in full accord, and installation direction is opposite.
4. the X-shaped reamer of treatment femur head necrosis according to claim 3, it is characterized in that: connecting rod is rectangular, and afterbody is provided with U-lag.
5. the X-shaped reamer of treatment femur head necrosis according to claim 1 is characterized in that: the halfround head nail axle head is threaded, and packing ring is provided with threaded interior hole, connects the whole circle welding in back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204041962U CN202288427U (en) | 2011-10-21 | 2011-10-21 | X-shaped reamer for ONFH (osteonecrosis of the femeral head) treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204041962U CN202288427U (en) | 2011-10-21 | 2011-10-21 | X-shaped reamer for ONFH (osteonecrosis of the femeral head) treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202288427U true CN202288427U (en) | 2012-07-04 |
Family
ID=46357427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204041962U Expired - Lifetime CN202288427U (en) | 2011-10-21 | 2011-10-21 | X-shaped reamer for ONFH (osteonecrosis of the femeral head) treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202288427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10456145B2 (en) | 2017-05-16 | 2019-10-29 | Arthrex, Inc. | Expandable reamers |
| CN110680455A (en) * | 2019-10-25 | 2020-01-14 | 中国人民解放军陆军军医大学第一附属医院 | Reamer for medullary cavity |
-
2011
- 2011-10-21 CN CN2011204041962U patent/CN202288427U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10456145B2 (en) | 2017-05-16 | 2019-10-29 | Arthrex, Inc. | Expandable reamers |
| US11376020B2 (en) | 2017-05-16 | 2022-07-05 | Arthrex, Inc. | Expandable reamers |
| CN110680455A (en) * | 2019-10-25 | 2020-01-14 | 中国人民解放军陆军军医大学第一附属医院 | Reamer for medullary cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CANWELL MEDICAL CO., LTD. Free format text: FORMER NAME: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: 321016 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee after: Zhejiang Ke Hui Medical Treatment Equipment Co., Ltd Address before: 321016 Zhejiang city of Jinhua province Xian No. 466 South Street Zhejiang Kehui Medical Equipment Co Ltd Patentee before: Zhejiang Canwell Medical Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |