CN2075508U - Rotary type thighbone marrow inenr needle extracting device - Google Patents
Rotary type thighbone marrow inenr needle extracting device Download PDFInfo
- Publication number
- CN2075508U CN2075508U CN90219155U CN90219155U CN2075508U CN 2075508 U CN2075508 U CN 2075508U CN 90219155 U CN90219155 U CN 90219155U CN 90219155 U CN90219155 U CN 90219155U CN 2075508 U CN2075508 U CN 2075508U
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- China
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- leading screw
- intramedullary needle
- femur
- needle extractor
- described rotary
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Abstract
The utility model relates to a rotary type thighbone marrow inner needle extracting device, which belongs to an improved medical appliance of arthrosteopedic surgery. The utility model is composed of a pull hook, and a driving screw nut, wherein, the pull hook is connected with the screw rod which is positioned in the center of the casing tube, and the top of the driving screw nut is arranged on one end of the casing tube and is sheathed on the screw rod. In the process of operation, the pull hook hooks the tail pore of the marrow inner needle, the driving screw nut is rotated, and by the reaction of the casing tube acting on the thighbone or skin, the marrow inner needle is slowly pulled out with the movement of the screw rod. The utility model has the advantages of advanced design structure, reasonable design, suitable strength of pulling out needles, no severe pain for patients, low cost, and convenient operation. The rotary type thighbone marrow inner needle extracting device can be widely used and is suitable for the condition of the inefficiency or failure of traditional extraction.
Description
This utility model belongs to medical instruments field, particularly a kind of modified model in the bone surgery set---rotary femur intramedullary needle extractor.
Owing to the reasons such as accident in war wound, vehicle accident, the construction, when causing Fracture of femur, in the bone surgery, fixing means commonly used has that intramedullary needle is fixed, steel plate is fixed ... Deng, wherein, be fixed as prefered method with intramedullary needle.
Usually, after perform the operation half a year or 1 year, need the fixedly intramedullary needle of usefulness, from the patient's femur after the healing, take out.
Prior art is to adopt traditional " pin injection-drawing out device in the femur marrow " to extract, and this apparatus partly is made of lever, bar, hook and impact hammer etc.During operation, rely on the strength of impact hammer, intramedullary needle is extracted from patient's femur with hook along bar bump lever.
There is following deficiency in prior art:
1. because structural defective, cause that to beat the pull out force amount not enough, the intramedullary needle of stubbornness is pulled out to come out;
2. the bump violence causes patient's severe pain;
3. because structural defective causes and beats when pulling out, beating the strength of pulling out can not keep point-blank with intramedullary needle well;
Since violence beat and pull out the easy fracture damage of hook.
Task of the present utility model, will design, provide a kind of follow-on operating theater instruments exactly---" rotary femur intramedullary needle extractor " its objective is to overcome the above-mentioned defective that prior art exists.
Task of the present utility model realizes as follows:
Made a kind of rotary femur intramedullary needle extractor of forming by drawing mechanism, supporting mechanism and force application mechanism, it is characterized in that:
A. drawing mechanism is by the leading screw (1) that is positioned at the cover tube hub, and the movable drag hook (3) that is connected in leading screw (1) one end is formed,
B. supporting mechanism, by being enclosed within leading screw (1) on every side, isometrical top cover (4) and lengthening sleeve pipe (5), adapter sleeve between the two (6) composition,
C. rotary force application mechanism is made up of the pushnut (7) that withstands on sleeve pipe one end and be socketed on leading screw (1) one end.
Above-mentioned rotary femur intramedullary needle extractor is characterized in that the leading screw (1) in the described drawing mechanism, and an end connects a jacking block (2), and the other end of jacking block (2) is joined by the afterbody external screw thread of female thread and movable drag hook (3).
Above-mentioned rotary femur intramedullary needle extractor is characterized in that the top cover (4) in the described supporting mechanism, is the slick cylinder of an inside and outside wall, and an end is flat mouthful, the arc notch that the other end has a shape and greater trochanter of femur position to match.
Above-mentioned rotary femur intramedullary needle extractor is characterized in that the lengthening sleeve pipe (5) in the described supporting mechanism, is the slick cylinder of an inside and outside wall, and two ends are flat mouthful,
Above-mentioned rotary femur intramedullary needle extractor, it is characterized in that described rotary force application mechanism, it is a pushnut (7) that is socketed in leading screw (1) one end, it is convex shape that its shape is faced, step (8) is arranged, the female thread (9) of pushnut (7) coincide with the external screw thread of leading screw (1), and the lateral surface of step (8) has handle (10).
Above-mentioned rotary femur intramedullary needle extractor, the material that it is characterized in that described each parts can be metal as rustless steel, copper, carbon steel or nonmetallic as engineering plastics.
Compared with the prior art, the present invention has tangible advantage:
1. structural design advanced person, it is enough to pull out the needle force amount, to using traditional intramedullary needle that the method for pulling out is pulled out the stubbornness of not coming out of beating, uses this utility model all can extract;
2. force mechanism is rotary, and is firmly evenly proper, avoided the bump violence, alleviated patient's misery;
3. reasonable in design, when pulling out pin, application of force direction is accurate, can keep point-blank with intramedullary needle well;
4. do not beat by force and pull out, do not damage apparatus;
5. cost is low, and is easy to use, and technology is grasped easily, and doctor, patient take like a shot;
6. applied widely, no matter be Flos Mume intramedullary needle or V-arrangement intramedullary needle, all can use.
Thereby, be the novel bone surgery set that a kind of utmost point has popularization, use value.
Finish design of the present utility model, reached its purpose.
Below in conjunction with drawings and Examples this utility model is further elaborated:
Fig. 1 is rotary femur intramedullary needle extractor structural representation.
Fig. 2 is pushnut (7) the structure front elevational schematic of rotary femur intramedullary needle extractor.
Fig. 3 is pushnut (7) the structure schematic top plan view of rotary femur intramedullary needle extractor.
Among Fig. 1, (1) is leading screw, and it is one and is with externally threaded screw rod that one end is socketed in the pushnut (7), other end connection jacking block (2); (2) be jacking block, it is fixed on of leading screw one end and carves the shape cone, and little head end is the tack cone, internal thread is arranged in it, and for connection activity drag hook usefulness, stub end is a cylinder, its external diameter and sleeve diameter coupling are to keep leading screw (1) at the sleeve center position; (3) be movable drag hook, head is hook-shaped, penetrates in the art in the intramedullary needle uropore, and traction is extracted, and afterbody is the screw rod of the outer silk of a band, screws in the internal thread of jacking block, can be fixed; (4) being the top cover, is the slick cylinder of an inside and outside wall, and an end is flat mouthful, and the arc notch that the other end has a shape and greater trochanter of femur position to match is the direct strong point in the art; (5) being the lengthening sleeve pipe, is the slick cylinder of an inside and outside wall, and two ends are flat mouthful;---also be the slick cylinder of an inside and outside wall, two ends are flat mouthful, its internal diameter and telescopic external diameter coupling---is enclosed within top cover (4) and the joint of the sleeve pipe (5) that extends along with the extracting of intramedullary needle, when needing the lengthening sleeve pipe, with adapter sleeve (6) in operation; (7) be pushnut (7) in the rotary force application mechanism, its female thread (9) coincide with the external screw thread of leading screw (1), relies on its internal thread to be socketed on the leading screw, the handle (10) of rotation pushnut, and leading screw can produce displacement, drives to extract intramedullary needle; It is convex shape that its shape is faced, and step (8) is arranged on it, and telescopic force side is withstood at this position in the operation, and the microcephaly's of " protruding " font external diameter with telescopic internal diameter coupling, can make the center position that leading screw keeps in the operation; The lateral surface of step (8) has handle (10); The shape of handle can be a short straight rod, an external lengthening sleeve pipe when needing.(11) be to be socketed in the leading screw end, make leading screw be convenient to hold the knurled nut who pinches.The material of each parts of above-mentioned rotary femur intramedullary needle extractor can be metal as rustless steel, copper, carbon steel or nonmetallic as engineering plastics.
Among Fig. 2,3, be that pushnut (7) structure of rotary femur intramedullary needle extractor is faced and schematic top plan view.The implication of its label is identical with Fig. 1.
[embodiment]
Make the rotary femur intramedullary needle extractor of a stainless steel, row orthopaedics intramedullary needle removal surgery.
Routine disinfection, after operation appears the intramedullary needle uropore, to be contained in the vertical movable drag hook of leading screw (1) (3) and hook the intramedullary needle uropore, put top cover (4), make its end of being with arc notch withstand on patient's greater trochanter of femur position just, the pushnut (7) of screwing on, clockwise rotate handle (10) then, the thrust that spiral is produced, the nationality sleeve pipe acts on patient's greater trochanter of femur portion, by the counteracting force of its generation, make intramedullary needle along with leading screw (1) in pushnut (7) outer moving and slowly extracted.
When movable drag hook (3) overlaps (4) tail end near the top, drag hook (3) is withdrawed from from the intramedullary needle uropore, with operating forceps the remainder of intramedullary needle is extracted, perhaps connect lengthening sleeve pipe (5), by last pushnut (7), repeat aforesaid operations, until finishing the overall process of pulling out intramedullary needle.Conventional post processing, stitching.
In the operation process, because the process of " pulling out pin " is a slowly progressive process, the severe pain that is caused is hit in the violence that patient can exempt when using traditional " pin injection-drawing out device in the femur marrow ".
Top cover of the present utility model (4), also can make two ends all is flat mouthful, the strong point in the operation also moves on to outside patient's thigh skin thereupon.
Pushnut of the present utility model (7) also can be without handle (10), and replace belt pulley, adopt electronic propelling.
This utility model can be made different size, with the patient's that adapts to age groups needs.
Claims (6)
1, a kind of medical instruments field that belongs to, by the femur intramedullary needle extractor that drawing mechanism, supporting mechanism and force application mechanism are formed, feature of the present utility model is,
A. drawing mechanism is by the leading screw (1) that is positioned at the cover tube hub, and the movable drag hook (3) that is connected in leading screw (1) one end is formed,
B. supporting mechanism, by being enclosed within leading screw (1) on every side, isometrical top cover (4) and lengthening sleeve pipe (5), adapter sleeve between the two (6) composition,
C. rotary force application mechanism is made up of the pushnut (7) that withstands on sleeve pipe one end and be socketed on leading screw (1) one end.
2, according to the described rotary femur intramedullary needle extractor of claim 1, it is characterized in that the leading screw (1) in the described drawing mechanism, an end connects a jacking block (2), and the other end of jacking block (2) is joined by the afterbody external screw thread of female thread and movable drag hook (3).
3, according to the described rotary femur intramedullary needle extractor of claim 1, it is characterized in that the top cover (4) in the described supporting mechanism, be the slick cylinder of an inside and outside wall, an end is flat mouthful, the arc notch that the other end has a shape and greater trochanter of femur position to match.
4, according to the described rotary femur intramedullary needle extractor of claim 1, it is characterized in that the lengthening sleeve pipe (5) in the described supporting mechanism, is the slick cylinder of an inside and outside wall, and two ends are flat mouthful.
5, according to the described rotary femur intramedullary needle extractor of claim 1, it is characterized in that described rotary force application mechanism, it is a pushnut (7) that is socketed in leading screw (1) one end, it is convex shape that its shape is faced, step (8) is arranged, the female thread (9) of pushnut (7) coincide with the external screw thread of leading screw (1), and the lateral surface of step (8) has handle (10).
6, according to the described rotary femur intramedullary needle extractor of claim 1, the material that it is characterized in that described each parts can be metal as rustless steel, copper, carbon steel or nonmetallic as engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90219155U CN2075508U (en) | 1990-10-12 | 1990-10-12 | Rotary type thighbone marrow inenr needle extracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90219155U CN2075508U (en) | 1990-10-12 | 1990-10-12 | Rotary type thighbone marrow inenr needle extracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2075508U true CN2075508U (en) | 1991-04-24 |
Family
ID=4897876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90219155U Withdrawn CN2075508U (en) | 1990-10-12 | 1990-10-12 | Rotary type thighbone marrow inenr needle extracting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2075508U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835989A (en) * | 2012-10-08 | 2012-12-26 | 杭州马斯汀医疗器材有限公司 | Medullary cavity filing and extracting device |
| CN107184269A (en) * | 2017-07-12 | 2017-09-22 | 王丰岩 | Inverted tension type intramedullary nail device for taking out broken nail |
| CN111067613A (en) * | 2019-12-25 | 2020-04-28 | 岳攀 | Rotary femoral intramedullary needle extractor |
| CN116421292A (en) * | 2023-03-01 | 2023-07-14 | 常州健力邦德医疗器械有限公司 | Implantation traction mechanism of metal intramedullary pin |
-
1990
- 1990-10-12 CN CN90219155U patent/CN2075508U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835989A (en) * | 2012-10-08 | 2012-12-26 | 杭州马斯汀医疗器材有限公司 | Medullary cavity filing and extracting device |
| CN107184269A (en) * | 2017-07-12 | 2017-09-22 | 王丰岩 | Inverted tension type intramedullary nail device for taking out broken nail |
| CN107184269B (en) * | 2017-07-12 | 2024-04-19 | 王丰岩 | Reverse tension type intramedullary nail broken nail extractor |
| CN111067613A (en) * | 2019-12-25 | 2020-04-28 | 岳攀 | Rotary femoral intramedullary needle extractor |
| CN111067613B (en) * | 2019-12-25 | 2022-09-16 | 宿州微腾企业管理咨询服务有限公司 | Rotary femoral intramedullary needle extractor |
| CN116421292A (en) * | 2023-03-01 | 2023-07-14 | 常州健力邦德医疗器械有限公司 | Implantation traction mechanism of metal intramedullary pin |
| CN116421292B (en) * | 2023-03-01 | 2023-10-17 | 常州健力邦德医疗器械有限公司 | Implantation traction mechanism of metal intramedullary pin |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |