CN204562339U - Femoral greater trochanter bone tractor - Google Patents
Femoral greater trochanter bone tractor Download PDFInfo
- Publication number
- CN204562339U CN204562339U CN201520229151.4U CN201520229151U CN204562339U CN 204562339 U CN204562339 U CN 204562339U CN 201520229151 U CN201520229151 U CN 201520229151U CN 204562339 U CN204562339 U CN 204562339U
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- China
- Prior art keywords
- greater trochanter
- bail
- lag screw
- bone tractor
- screw
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Abstract
The utility model discloses a kind of femoral greater trochanter bone tractor, wherein, comprise lag screw and bail, described lag screw is laterally formed with the passage passed for guide pin, described bail is connected with the end of lag screw, and the height on described bail is longitudinal is greater than the diameter of described lag screw.The femoral greater trochanter bone tractor structure that this utility model provides is simple, ingenious, easy to use, be applicable to the pelvic ring fractures of displacement, hip joint central dislocation and old posterior dislocation of hip and merge peri-knee fractures simultaneously, the situations such as knee joint peripheral skin soft-tissue infection, also be applicable to skeletal traction through tibial tubercle excessively of a specified duration simultaneously, traction nail loosens or nail infects, and must change continuation traction during nail.
Description
Technical field
This utility model relates to medical instruments field, particularly relates to a kind of femoral greater trochanter bone tractor.
Background technology
Have the pelvic ring fractures of displacement, hip joint central dislocation and old posterior dislocation of hip need make Bone traction before surgery, be beneficial to reset in operation, usually all adopt Bone traction on condyle of femur at present, concrete operation step is as follows:
The lower limb of damage are placed on Blang's towing bracket, in patella upper limb nearside 1cm, draw a horizontal line vertical with femur (senile osteoporosis, nailing is higher apart from patella upper limb, between twenty and fifty sclerotin is hard, and nailing is closer apart from patella upper limb).Swell peak along condyle in capitulum fibulae leading edge and femur again, respectively do a vertical line crossing with patella upper limb horizontal line, crossing 2 as mark, i.e. the entry and exit point of steinman pin.
Sterilization, after local anesthesia, thrusts steinman pin until femur from femoribus internus gauge point, and hammering or pierce steinman pin makes steinman pin spread out of lateral cutaneous gauge point, makes both sides pull needle exposed parts isometric, evened up by the skin caved in inserting needle place with towel forceps; Traction bow is installed, traction frame draws.
This traction technique is applicable to the Fracture of femur of displacement, the pelvic ring fractures having displacement, hip joint central dislocation and old posterior dislocation of hip etc.; Also can be used for skeletal traction through tibial tubercle excessively of a specified duration, traction nail loosens or nail infects, and must change continuation traction during nail.But merge the situation such as peri-knee fractures or knee joint peripheral skin soft-tissue infection for having the pelvic ring fractures of displacement, hip joint central dislocation and old posterior dislocation of hip simultaneously, on above-mentioned condyle of femur, Bone traction technology can not be suitable for, therefore, be necessary to provide a kind of new femoral greater trochanter bone tractor, be suitable for the Bone traction of these situations above-mentioned.
Utility model content
The technical problem that this utility model solves is to provide a kind of femoral greater trochanter bone tractor, be applicable to the Bone traction when pelvic ring fractures of displacement, hip joint central dislocation and old posterior dislocation of hip are associated with the situation such as peri-knee fractures or knee joint peripheral skin soft-tissue infection simultaneously, and structure is simple, easy to use.
This utility model is solve the problems of the technologies described above the technical scheme adopted to be to provide a kind of femoral greater trochanter bone tractor, wherein, comprise lag screw and bail, described lag screw is laterally formed with the passage passed for guide pin, described bail is connected with the end of lag screw, and the height on described bail is longitudinal is greater than the diameter of described lag screw.
Above-mentioned femoral greater trochanter bone tractor, wherein, described lag screw comprises shank of screw, and the front end of described shank of screw is provided with screw thread.
Above-mentioned femoral greater trochanter bone tractor, wherein, the close end of described lag screw roughly conically.
Above-mentioned femoral greater trochanter bone tractor, wherein, also movable coupling, is provided with tail cap to the far-end of described passage.
Above-mentioned femoral greater trochanter bone tractor, wherein, described tail cap is truncated cone-shaped, and the outer circumference surface of described tail cap mates with the far-end inwall of described passage and is provided with female thread and external screw thread.
Above-mentioned femoral greater trochanter bone tractor, wherein, described lag screw and bail one-body molded.
Above-mentioned femoral greater trochanter bone tractor, wherein, the far-end of described bail corresponds to described tail cap position in the horizontal and is provided with cavity ring.
Above-mentioned femoral greater trochanter bone tractor, wherein, the cross sectional shape of described bail is circular, oval or square.
Above-mentioned femoral greater trochanter bone tractor, wherein, the diameter of described shank of screw is 8-12mm, the degree of depth of described screw thread is 2-4mm, the length of described screw thread is 30-50mm, the length of described lag screw is 100-140mm, and the diameter of described passage is 1-3mm, and the overall diameter of described bail is 60-100mm.
Above-mentioned femoral greater trochanter bone tractor, wherein, described cavity ring width is in the horizontal 8-12mm.
This utility model contrast prior art has following beneficial effect: the femoral greater trochanter bone tractor that this utility model provides, by the one end being arranged on lag screw, bail is set, during use, lag screw enters femur along guide pin and greater trochanter bone is installed, draw on traction frame after traction installs, the femoral greater trochanter bone tractor structure that this utility model provides is simple, ingenious, easy to use, be applicable to the pelvic ring fractures of displacement, hip joint central dislocation and old posterior dislocation of hip merge peri-knee fractures simultaneously, the situations such as knee joint peripheral skin soft-tissue infection, also be applicable to skeletal traction through tibial tubercle excessively of a specified duration simultaneously, traction nail loosens or nail infects, continuation traction during nail must be changed.
Accompanying drawing explanation
Fig. 1 is the structural representation of femoral greater trochanter bone tractor in this utility model embodiment;
Fig. 2 is the tail cap schematic diagram of femoral greater trochanter bone tractor in this utility model embodiment.
In figure:
1 lag screw 11 shank of screw 12 screw thread 13 tail cap
14 hollow passageway 2 bail 21 cavity ring
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
Fig. 1 is the structural representation of femoral greater trochanter bone tractor in this utility model embodiment.
Refer to Fig. 1, the femoral greater trochanter bone tractor that the present embodiment provides, comprise lag screw 1 and bail 2, bail 2 is connected with the end of lag screw 1, and preferably, lag screw 1 comprises shank of screw 11, and the front end of shank of screw 11 is provided with screw thread 12.The close end of lag screw 1 roughly conically, the passage 14 passed for guide pin is laterally formed in lag screw 1, the two ends of passage 14 are opening, described guide pin can be steinman pin or Kirschner wire etc., play the guiding role, femoral greater trochanter bone tractor is set on guide pin by passage 14, is arranged on the correct position in femur along guide pin.Preferably, the far end activity coupling of passage 14 is provided with tail cap 13; When bringing into use, need to unload lower tail cap 13, at traction apparatus after guide pin installs, distal openings by passage 14 extracts guide pin, after guide pin is extracted, at this moment tail cap 13 can be arranged in the distal openings of passage 14, block the distal openings of passage 14, avoid bone marrow flow out external and prevent bacteriological infection.Please simultaneously see Fig. 2, preferably, tail cap 13 is in truncated cone-shaped, the outer circumference surface of tail cap 13 mates with the far-end inwall of passage 14 and is provided with female thread and external screw thread, the shape of tail cap 13 and matching structure the present embodiment of passage 14 do not limit, as long as can seal the port clogging passage 14 by tail cap 13.
The femoral greater trochanter bone tractor that the present embodiment provides, lag screw 1 and bail 2 one-body molded; Height on bail 2 is longitudinal is much larger than the diameter of lag screw 1, the cross sectional shape of bail 2 is preferably circular, oval or square etc., one be convenient operation personnel hold rotate lag screw 1 is screwed into femur and greater trochanter bone, two is be connected with traction frame to draw.Preferably, the far-end of bail 2 corresponds to tail cap 13 position in the horizontal and is provided with cavity ring 21, the fastened tools such as screwdriver can be dismantled or fastening through cavity ring 21 pairs of tail caps 13, the cross sectional shape of cavity ring 21 can be oval, the minor axis diameter of cavity ring 21 is slightly larger than the thickness of bail 2, the shape and size of the present embodiment to cavity ring 21 do not limit, and carry out operating as long as clamp device can stretch into cavity ring 21.
In the present embodiment, the size of each parts of femoral greater trochanter bone tractor is preferably as follows: the diameter of shank of screw 11 is 10mm, and the degree of depth of screw thread 12 is 3mm, the length of screw thread 12 is 40mm, the total length of lag screw 1 is 120mm, and the diameter of passage 14 is 2mm, and the overall diameter of bail 2 is 80mm.Cavity ring 21 width is in the horizontal 10mm.
The concrete using method of the femoral greater trochanter bone tractor that this utility model provides is as follows: carry out routine disinfection drape to patient, with about 2cm place under patient femur's greater trochanter for entry point, by the direction of Kirschner wire along neck of femur, namely Kirschner wire and femoral shaft are about in 135 degree, squeeze into Kirschner wire, Kirschner wire squeezes into about 10cm, after fluoroscopic observation Kirschner wire position puts in place, lag screw 1 is screwed into neck of femur along Kirschner wire, after greater trochanter bone tractor is in place, take out Kirschner wire, fixing tail cap is installed; Finally carry out Bone traction to patient, trailing weight is about 1/1 to seven/10th of weight in patients.
The femoral greater trochanter bone tractor that this utility model provides is applicable to the pelvic ring fractures of displacement, hip joint central dislocation and old posterior dislocation of hip and merges peri-knee fractures simultaneously, the situations such as knee joint peripheral skin soft-tissue infection, also be applicable to skeletal traction through tibial tubercle excessively of a specified duration simultaneously, traction nail loosens or nail infects, and must change continuation traction during nail.
Although this utility model discloses as above with preferred embodiment; so itself and be not used to limit this utility model; any those skilled in the art; not departing from spirit and scope of the present utility model; when doing a little amendment and perfect, therefore protection domain of the present utility model is when being as the criterion of defining with claims.
Claims (10)
1. a femoral greater trochanter bone tractor, it is characterized in that, comprise lag screw (1) and bail (2), described lag screw (1) is laterally formed with the passage (14) passed for guide pin, described bail (2) is connected with the end of lag screw (1), and the height in described bail (2) longitudinal direction is greater than the diameter of described lag screw (1).
2. femoral greater trochanter bone tractor as claimed in claim 1, it is characterized in that, described lag screw (1) comprises shank of screw (11), and the front end of described shank of screw (11) is provided with screw thread (12).
3. femoral greater trochanter bone tractor as claimed in claim 2, it is characterized in that, the close end of described lag screw (1) roughly conically.
4. femoral greater trochanter bone tractor as claimed in claim 1, is characterized in that, also movable coupling is provided with tail cap (13) to the far-end of described passage (14).
5. femoral greater trochanter bone tractor as claimed in claim 4, it is characterized in that, described tail cap (13) is in truncated cone-shaped, and the outer circumference surface of described tail cap (13) mates with the far-end inwall of described passage (14) and is provided with female thread and external screw thread.
6. femoral greater trochanter bone tractor as claimed in claim 1, is characterized in that, described lag screw (1) and bail (2) one-body molded.
7. femoral greater trochanter bone tractor as claimed in claim 4, is characterized in that, the far-end of described bail (2) corresponds to described tail cap (13) position in the horizontal and is provided with cavity ring (21).
8. femoral greater trochanter bone tractor as claimed in claim 1, is characterized in that, the cross sectional shape of described bail (2) is circular, oval or square.
9. femoral greater trochanter bone tractor as claimed in claim 2, it is characterized in that, the diameter of described shank of screw (11) is 8-12mm, the degree of depth of described screw thread (12) is 2-4mm, the length of described screw thread (12) is 30-50mm, the length of described lag screw (1) is 100-140mm, and the diameter of described passage (14) is 1-3mm, and the overall diameter of described bail (2) is 60-100mm.
10. femoral greater trochanter bone tractor as claimed in claim 7, it is characterized in that, described cavity ring (21) width is in the horizontal 8-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229151.4U CN204562339U (en) | 2015-04-15 | 2015-04-15 | Femoral greater trochanter bone tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229151.4U CN204562339U (en) | 2015-04-15 | 2015-04-15 | Femoral greater trochanter bone tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204562339U true CN204562339U (en) | 2015-08-19 |
Family
ID=53855040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520229151.4U Expired - Fee Related CN204562339U (en) | 2015-04-15 | 2015-04-15 | Femoral greater trochanter bone tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204562339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104771215A (en) * | 2015-04-15 | 2015-07-15 | 复旦大学附属金山医院 | Tractor for greater trochanter of femur |
-
2015
- 2015-04-15 CN CN201520229151.4U patent/CN204562339U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104771215A (en) * | 2015-04-15 | 2015-07-15 | 复旦大学附属金山医院 | Tractor for greater trochanter of femur |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20180415 |