CN200970259Y - Medical femur take out device - Google Patents
Medical femur take out device Download PDFInfo
- Publication number
- CN200970259Y CN200970259Y CN 200620066840 CN200620066840U CN200970259Y CN 200970259 Y CN200970259 Y CN 200970259Y CN 200620066840 CN200620066840 CN 200620066840 CN 200620066840 U CN200620066840 U CN 200620066840U CN 200970259 Y CN200970259 Y CN 200970259Y
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- Prior art keywords
- nail
- getting
- harvesting
- telescopic claw
- opening
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Abstract
The utility model discloses a medical head harvester for thigh bones, which comprises a harvesting nail, a self-tapping thread head fixed at one end of the harvesting nail and a cross bar fixed at the other end of the harvesting nail, wherein the harvesting nail is hollow-structured; an opening is provided on the harvesting nail side wall that is connected with the self-tapping thread head; corresponding to the opening, a telescopic claw that can stick in and stick out of the harvesting nail in a telescopic manner is provided inside the harvesting nail; connected with the telescopic claw, a telescoping mechanism that can control the telescopic claw to stick in and stick out of the opening is provided inside the harvesting nail. When applied to clinical operations, the utility model has the advantages of that: bone harvesting becomes more smooth and convenient, and the utility model can effectively reduce the difficulty and time of surgery and can ensure smooth process of surgery etc.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, is a kind of improvement technology of medical femur head extractor specifically.
Background technology
At present, in the hip replacement surgery process, the femur head extractor of use generally is made up of a cross bar and a vertical metallic rod.The head of vertical metallic rod be a thread taper, is convenient to rotation and is screwed in the femoral head with taking-up, and this head extractor is simple in structure, easy to operate, durable, but have following open defect: suitable difficulty is arranged when capital taking-up, and more time-consuming, effort then can't be taken out femoral head sometimes at all.The key that causes this reason is that this head extractor has only head end that helicitic texture is arranged, and does not have the cross locking structure.Because femoral head the inside is spongy bone, combine defective tightness, firmly between screw thread and the spongy bone, there is not enough frictional force again, thereby can not firmly rotate the femur head extractor, can not firmly upwards pull, can only firmly push up sled, take out femoral head to tear the periphery ligament.But femoral head has ligamentum teres femoris and periphery joint capsule to link to each other, list has taken out suitable difficulty with top sled strength, especially causing the distortion of acetabular bone or femoral head, femoral head in the ischemic necrosis of femoral head later stage has obvious adhesion and hip joint inflammation to cause under the situations such as the adhesion of joint capsule periphery is obvious, almost be impossible take out, at this moment often adopt and split Odd Lot bone mode and take out, or grind and bone is taken out with the acetabular bone sander, so quite time-consuming power, and the possibility of splitting acetabular bone is arranged.When hip is got even simple femoral neck bone is converted, also occur the femur head extractor sometimes in the loosening difficulty that becomes of taking out of femoral head the inside stripped thread, femoral head has downright bad all the more so during with absorption, adhesion.Therefore at present the such product that uses is given and is clinically changed the hip operation and make troubles, even might cause accident such as acetabular bone splitting, thereby has increased the difficulty and the time of operation.
Summary of the invention
The purpose of this utility model is to design a kind of in replacement of total hip, and femoral head is taken out and time saving and energy saving new-type femoral head head extractor smoothly.
The further task of this utility model is to make this novel femur head extractor in replacement of total hip, especially the ischemic necrosis of femoral head later stage cause the distortion of acetabular bone or femoral head, femoral head have obvious adhesion and hip joint inflammation cause the adhesion of joint capsule periphery obviously or femoral head have downright bad when absorbing etc. under the situation, head extractor and femoral head are combined closely, can pull, push up sled, rotation etc. firmly, the convenient to greatest extent femoral head that takes out impels operation to carry out smoothly.
This utility model is realized by following technical proposals:
A kind of medical femur head extractor, comprise and get nail, be fixed on the tapping screw thread head of getting nail one end, be fixed on the cross bar of getting the nail other end, it is characterized in that: the described nail of getting is a hollow, be provided with opening getting on the nail sidewall of linking to each other with the tapping screw thread head, relative with opening, in getting nail, be provided with collapsiblely in getting nail or stretch out the telescopic claw of getting outside the nail, be attached thereto, in getting nail, be provided with the indentation of may command telescopic claw or stretch out the telescoping mechanism of opening.
Described telescopic claw is triangle knife-edge or pyramid, correspondingly with described opening respectively establishes three, along the described nail central shaft uniform distribution of getting.
This utility model compared with prior art has the following advantages:
Owing to be provided with contraction between the nail and the time be concealed in to get and stretch out in the telescopic claw of getting the nail outer peripheral face when opening in the nail with getting at the tapping screw thread head, get nail in be provided with and can make telescopic claw shrink and open telescoping mechanism, like this, screw in the femoral head the inside, though the femoral head the inside is spongy bone, but stretch out in when opening and get the nail outer peripheral face owing to telescopic claw, thereby have enough frictional force and axial resistance, so both can firmly rotate the femur head extractor, also can firmly upwards pull, and not only can only firmly push up sled, so, even if cause acetabular bone or femoral head distortion in the ischemic necrosis of femoral head later stage, femoral head have obvious adhesion and hip joint inflammation cause the adhesion of joint capsule periphery obviously or femoral head have downright bad when absorbing etc. under the situation, because telescopic claw is being got the radial barrier effect of nail, under the combined effect of tapping screw thread head and flexible screw mandrel, can make things convenient for, finish effectively and get nail and in operation process, rotate, pull, bone is successfully taken out in the action of top sled.
Description of drawings
Fig. 1 is the medical femur head extractor of a this utility model part section structural representation;
Fig. 2 is the structural representation of the telescopic claw of the medical femur head extractor of this utility model when opening;
Fig. 3 is the side view of the telescopic claw of the medical femur head extractor of this utility model when opening.
The specific embodiment
Below in conjunction with accompanying drawing the medical femur head extractor of this utility model is further described:
A kind of medical femur head extractor as Fig. 1, Fig. 2, shown in Figure 3, comprises and gets nail 1, is fixed on the tapping screw thread head 11 of getting nail 1 one ends, be fixed on get nail 1 other end get nail cross bar 12.Getting nail 1 is hollow, get nail 1 link to each other with tapping screw thread head 11 get on nail 1 sidewall and be provided with opening 5, relative with opening, in getting nail, be provided with collapsible in getting nail or stretch out the telescopic claw of getting outside the nail 3, be attached thereto, in getting nail, be provided with the indentation of may command telescopic claw or stretch out the telescoping mechanism 4 of opening 5.Telescopic claw 3 is triangle knife-edge or pyramid, correspondingly with opening respectively establishes three, along getting nail central shaft uniform distribution.Telescopic claw 3 can be concealed in when shrinking and get in the nail 1, can stretch out through opening 5 when opening and get outside the nail 1.
Specifically, telescoping mechanism 4 is the screw mandrel telescoping mechanism, the one flexible screw mandrel 2 that can move in getting nail is arranged in the telescoping mechanism 4, one end and the telescopic claw 3 of flexible screw mandrel join, the other end links to each other with the inwall of getting nail 1 by screw thread, is provided with its device that moves back and forth one screw edge of a knife 6 of may command at this end top.Telescopic claw is hinged on to be got in the nail 1, with flexible screw mandrel 2 sphere apical graftings or link.
Telescopic claw is triangle knife-edge or pyramid, and it is corresponding with opening respectively to be provided with three, also can establish six, along getting nail central shaft uniform distribution.
With external force rotary extension screw mandrels 2 such as screwdrivers it is moved back and forth vertically in getting nail 1, and drive telescopic claw 3 shrink or open.When needs were got bone, the screw mandrel 2 that will stretch moved to tapping screw thread head 11 directions, and at this moment, telescopic claw 3 just stretches out from opening, inserted spongy bone, was getting the radial generation barrier effect of nail.Owing to have enough frictional force between telescopic claw 3 and the spongy bone, the bone of getting of just can firmly do rotation in operation process, pullling, push up sled bone moves.Even if in clinical operation of changing hip and so on, take place the ischemic necrosis of femoral head later stage cause acetabular bone or femoral head distortion, femoral head have obvious adhesion and hip joint inflammation cause the adhesion of joint capsule periphery obviously or femoral head have under the situations such as downright bad and absorption, also can successfully take out bone.
This utility model is not limited in the clinical operation of changing hip, is suitable for too for other operation that need take out bone.
Claims (4)
1, a kind of medical femur head extractor, comprise and get nail, be fixed on the tapping screw thread head of getting nail one end, be fixed on the cross bar of getting the nail other end, it is characterized in that: the described nail of getting is a hollow, be provided with opening getting on the nail sidewall of linking to each other with the tapping screw thread head, relative with opening, in getting nail, be provided with collapsiblely in getting nail or stretch out the telescopic claw of getting outside the nail, be attached thereto, in getting nail, be provided with the indentation of may command telescopic claw or stretch out the telescoping mechanism of opening.
2, medical femur head extractor according to claim 1, it is characterized in that: described telescoping mechanism is the screw mandrel telescoping mechanism, the one flexible screw mandrel that can move in getting nail is arranged in the screw mandrel telescoping mechanism, one end and the telescopic claw of flexible screw mandrel join, and the other end is provided with its device that moves back and forth of may command.
3, medical femur head extractor according to claim 2 is characterized in that: described telescopic claw is hinged on to be got in the nail, with described flexible screw mandrel sphere apical grafting or link.
4, femur head extractor according to claim 3 is characterized in that: described telescopic claw is triangle knife-edge or pyramid, correspondingly with described opening respectively establishes three, along the described nail central shaft uniform distribution of getting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620066840 CN200970259Y (en) | 2006-10-31 | 2006-10-31 | Medical femur take out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620066840 CN200970259Y (en) | 2006-10-31 | 2006-10-31 | Medical femur take out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200970259Y true CN200970259Y (en) | 2007-11-07 |
Family
ID=38881515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620066840 Expired - Fee Related CN200970259Y (en) | 2006-10-31 | 2006-10-31 | Medical femur take out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200970259Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097637A1 (en) * | 2011-01-21 | 2012-07-26 | Lee Benjamino Kah Hung | Bone harvesting device |
| CN103876810A (en) * | 2014-04-20 | 2014-06-25 | 赵全明 | Medical femoral head taking device |
| CN104546034A (en) * | 2014-12-30 | 2015-04-29 | 欧阳晓 | Medical femoral head extractor |
| CN107260272A (en) * | 2017-06-26 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of medical bone withdrawing device |
-
2006
- 2006-10-31 CN CN 200620066840 patent/CN200970259Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097637A1 (en) * | 2011-01-21 | 2012-07-26 | Lee Benjamino Kah Hung | Bone harvesting device |
| US8920423B2 (en) | 2011-01-21 | 2014-12-30 | Benjamino Kah Hung LEE | Bone harvesting device |
| CN103876810A (en) * | 2014-04-20 | 2014-06-25 | 赵全明 | Medical femoral head taking device |
| CN104546034A (en) * | 2014-12-30 | 2015-04-29 | 欧阳晓 | Medical femoral head extractor |
| CN107260272A (en) * | 2017-06-26 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of medical bone withdrawing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |