CN201939475U - Marrow core decompression tool for femoral head necrosis - Google Patents
Marrow core decompression tool for femoral head necrosis Download PDFInfo
- Publication number
- CN201939475U CN201939475U CN2011200140757U CN201120014075U CN201939475U CN 201939475 U CN201939475 U CN 201939475U CN 2011200140757 U CN2011200140757 U CN 2011200140757U CN 201120014075 U CN201120014075 U CN 201120014075U CN 201939475 U CN201939475 U CN 201939475U
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- China
- Prior art keywords
- rod
- head necrosis
- core decompression
- femur head
- described body
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Abstract
The utility model discloses a marrow core decompression tool for femoral head necrosis, which belongs to the technical field of medical instruments and comprises a centrally hollow rod. An edge groove is arranged along the rod on the outer surface of one end of the rod, a through hole communicated with the edge groove is arranged along the rod and at the other end of the rod, and graduation marks are arranged on the whole outer surface of the rod. By the aid of the marrow core decompression tool, X-raying times in a surgery can be reduced greatly, stereo effect of drilling is improved, surgical speed is increased, surgical time is shortened, and the marrow core decompression tool is convenient to use, simple in structure and easy to implement.
Description
Technical field
The present invention relates to technical field of medical instruments, relate in particular to a kind of femur head necrosis core decompression instrument.
Background technology
Femur head necrosis claims ischemic necrosis of femoral head again, is one of 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.
For the early stage treatment of femur head necrosis, a kind of common Therapeutic Method is marrow core boring decompression, it is to after patient's administration of anaesthetic, X line perspective keeps certain collodiaphyseal angle and top rake to the femoral head internal drilling in the femoral greater trochanter below down, make the Kirschner wire tip reach 4-5mm under the femoral head cartilage, in femoral head, neck of femur, make osseous tunnel, reach the purpose of decompression.Yet X line perspective need be repeatedly adopted in this operation, with the position and the degree of depth of guaranteeing to hole, has an X-rayed often, and operating time is longer.
Summary of the invention
The purpose of this invention is to provide a kind of femur head necrosis core decompression instrument,, can reduce X line perspective number of times, shorten operating time by means of this instrument.
For achieving the above object, the present invention adopts following technical scheme:
A kind of femur head necrosis core decompression instrument, the body of rod that comprises central hollow, the described body of rod in outer surface upper edge of one end of the described body of rod is provided with edge groove, the other end of the described body of rod is provided with the open-work that is connected with described edge groove along the described body of rod, and the whole outer surface of the described body of rod is provided with scale.
Further, be arranged with nut on the described body of rod, described nut is provided with locking device.
Further, the side of described nut is provided with screw, and described locking device is the tie down screw that is plugged in the described screw.
Further, the end face of described nut is provided with clock and watch sample scale.
Further, the end that the described body of rod is provided with an end of described edge groove is a handle portion, and the diameter of described handle portion is greater than the diameter of the described body of rod other end.
By means of femur head necrosis core decompression instrument provided by the invention, can significantly reduce X line perspective number of times in the operation, increase the stereoeffect of boring, accelerate the speed of operation, shorten the time of operation, and the present invention easy to use, simple in structure, be easy to realize.
Description of drawings
Fig. 1 is the overall structure sketch map of femur head necrosis core decompression instrument of the present invention;
Fig. 2 is the left end Facad structure sketch map of femur head necrosis core decompression instrument shown in Figure 1;
Fig. 3 is the right-hand member Facad structure sketch map of femur head necrosis core decompression instrument shown in Figure 1;
Fig. 4 is the Facad structure sketch map of nut and locking device in the femur head necrosis core decompression instrument shown in Figure 1;
Fig. 5-7 is the use sketch map of femur head necrosis core decompression instrument shown in Figure 1;
Wherein, 1, central hollow, 2, the body of rod, 3, edge groove, 4, open-work, 5, scale, 6, femoral head, 7, neck of femur, 8, femoral shaft, 9, skin, 10, the location Kirschner wire, 11, drill bit, 12, nut, 13, locking device, 14, screw.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Shown in Fig. 1-7, the invention provides a kind of femur head necrosis core decompression instrument, the body of rod 2 that comprises central hollow 1, the outer surface upper edge body of rod 2 of one end of the body of rod 2 is provided with edge groove 3, the other end of the body of rod 2 is provided with the open-work 4 that is connected with edge groove 3 along the body of rod 2, and the whole outer surface of the body of rod 2 is provided with scale 5.
During use, at first as shown in Figure 5, wear pestle location Kirschner wire 10 to femoral head 6 centers under X line perspective, the position is femoral head 6 neck centers (can slightly be partial to focus); Then as shown in Figure 6, on skin, cut an osculum, put into femur head necrosis core decompression instrument of the present invention, at this moment, the central hollow 1 that location Kirschner wire 10 passes the body of rod 2, and the body of rod 2 has an end of open-work 4 near skin, end with edge groove 3 inserts drill bit (this is not shown) edgewise emargination groove 3 in the open-work 4, subsequently by means of the scale 5 on the body of rod 2 outer surfaces at last away from skin, determine drilling depth, boring decompression around location Kirschner wire 10 as required.
In addition, as shown in Figure 7, if open cortical bone with trepan, femur head necrosis core decompression instrument then of the present invention can also enter the tunnel of neck of femur 7, uses as usual.
In the use of the present invention, have when the Kirschner wire 10 of initial insertion location and need use X line perspective, can not re-use X line perspective in the process of follow-up boring decompression.Therefore, by means of femur head necrosis core decompression instrument of the present invention, can significantly reduce X line perspective number of times in the operation, increase the stereoeffect of boring, accelerate the speed of operation, shorten the time of operation, and the present invention easy to use, simple in structure, be easy to realize.
In Fig. 1, dimensional parameters a, b and the c of femur head necrosis core decompression instrument of the present invention can choose according to circumstances.
Among the present invention, preferably be arranged with nut 12 on the body of rod 2, nut 12 is provided with locking device 13.Utilize locking device 13 nut 12 can be fixed on the body of rod 2, cooperate the scale 5 on the body of rod 2 like this, can determine the degree of depth of boring more exactly, improve the effect of operation.Particularly, as shown in Figure 4, the side of nut 12 can be provided with screw 14, and locking device 13 is for being plugged in the tie down screw in the screw 14.
And, as shown in Figure 4,, can also be provided with clock and watch sample scale on the end face of nut 12 in order further to improve the accuracy of drilling depth.
In addition, outer shown in Figure 1, to use for convenience, the end that the body of rod 2 is provided with an end of edge groove 3 is preferably handle portion, and the diameter of this handle portion is greater than the diameter of the body of rod 2 other ends.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (5)
1. femur head necrosis core decompression instrument, it is characterized in that, the body of rod that comprises central hollow, the described body of rod in outer surface upper edge of one end of the described body of rod is provided with edge groove, the other end of the described body of rod is provided with the open-work that is connected with described edge groove along the described body of rod, and the whole outer surface of the described body of rod is provided with scale.
2. femur head necrosis core decompression instrument according to claim 1 is characterized in that be arranged with nut on the described body of rod, described nut is provided with locking device.
3. femur head necrosis core decompression instrument according to claim 2 is characterized in that the side of described nut is provided with screw, and described locking device is the tie down screw that is plugged in the described screw.
4. femur head necrosis core decompression instrument according to claim 2 is characterized in that the end face of described nut is provided with clock and watch sample scale.
5. according to the described femur head necrosis core decompression of arbitrary claim instrument in the claim 1 to 4, it is characterized in that the end that the described body of rod is provided with an end of described edge groove is a handle portion, the diameter of described handle portion is greater than the diameter of the described body of rod other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200140757U CN201939475U (en) | 2011-01-18 | 2011-01-18 | Marrow core decompression tool for femoral head necrosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200140757U CN201939475U (en) | 2011-01-18 | 2011-01-18 | Marrow core decompression tool for femoral head necrosis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201939475U true CN201939475U (en) | 2011-08-24 |
Family
ID=44466832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200140757U Expired - Fee Related CN201939475U (en) | 2011-01-18 | 2011-01-18 | Marrow core decompression tool for femoral head necrosis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201939475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525606A (en) * | 2012-01-09 | 2012-07-04 | 西安交通大学 | Medullary core decompression navigator and medullary core decompression method |
-
2011
- 2011-01-18 CN CN2011200140757U patent/CN201939475U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525606A (en) * | 2012-01-09 | 2012-07-04 | 西安交通大学 | Medullary core decompression navigator and medullary core decompression method |
| CN102525606B (en) * | 2012-01-09 | 2014-08-06 | 西安交通大学 | Medullary core decompression navigator and medullary core decompression method |
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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: 20110824 Termination date: 20120118 |