CN201239191Y - Intramedullary nail for locking fractured femur - Google Patents
Intramedullary nail for locking fractured femur Download PDFInfo
- Publication number
- CN201239191Y CN201239191Y CNU200820030035XU CN200820030035U CN201239191Y CN 201239191 Y CN201239191 Y CN 201239191Y CN U200820030035X U CNU200820030035X U CN U200820030035XU CN 200820030035 U CN200820030035 U CN 200820030035U CN 201239191 Y CN201239191 Y CN 201239191Y
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- nail
- interlocking
- femur
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- intramedullary
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Abstract
The utility model relates to an interlocking and inner marrow nail of the femur, which comprises an inner marrow nail and an interlocking nail, wherein the remote end of the inner marrow nail is provided with a channeled lockhole, thereby not only the transverse anti-rotation action of the interlocking nail is preserved, but also a longitudinal power pressurizing function is improved. Furthermore, the proximal end of the inner marrow nail is provided with three screw holes, a lockhole towards a direction of a small rotor is used for proximal end interlocking during the fracture of a femoral shaft, two screw holes toward the cervical part of a femur are used for the fracture between collum femurs or rotors so as to cause the inner marrow nail of the femur to have both a Gamma nail function or a PNF nail function. Besides, the interlocking nail is provided with duplex cortical screw threads and can ensure that the holding force between the interlocking nail and a femur is superior to the holding force between a interlocking nail with single cortical screw threads and a femur, while the extraction intensity of the interlocking nail with duplex cortical screw threads is superior than that of an interlocking nail with full threads.
Description
Affiliated technical field
This utility model relates to a kind of medical internal fixation device of resected femur fracture, the femoral interlocking intramedullary nail of the femoral axis of especially manageing it pressurization.
Background technology
Clinically the treatment tubular bone fracture is adopted more the mode of interlocking intramedullary nail internal fixation.The marrow internal fixation meets biomechanical theory, its fixation, but early functional exercise, and early loading prevents the cripetura of bone, avoids the axial and rotation deformity of fracturing.Present known femoral interlocking intramedullary nail structure is to be made of intramedullary pin and self-locking nail, after Fracture of femur resets intramedullary pin is squeezed into pulp cavity from the greater trochanter of femur place, under the help of far-end sight, self-locking nail is locked intramedullary pin.When treating union of fracture or phenomenon such as bone does not connect occurring intramedullary pin to be taken out, take out self-locking nail earlier, again intramedullary pin is taken out.But, because interlocking intramedullary nail far-end sight poor accuracy or apparatus are connected the insecure distal locking nail placement failure that causes with nail more common in operation, the interlocking difficulty of far-end has prolonged operating time, has increased amount of bleeding, has increased doctor and patient's radiological detriment.Need go the second operation taking-up meeting of distal locking nail because of motorization in the fracture healing process and bring operation misery and financial burden to the patient, risk of breakage, the withdrawing from of self-locking nail of intramedullary pin and distal locking nail cause the interlocking function to be lost gradually in addition.Friction between the screw thread of full thread self-locking nail and intramedullary pin interlocking hole wall can cause the increase of breaker meeting; The screw thread resistance to plucking output capacity of single-skin drum matter screw thread self-locking nail is little, causes withdrawing from of self-locking nail easily.And interior six sides of its afterbody can the coping screw cutter and interior six sides between " skidding " and cause the taking-up difficulty of self-locking nail.
Summary of the invention
This utility model be overcome femoral interlocking nail unable to walk axial pressure deficiency, reduce broken nail, the slippage risk of distal locking nail, reduce the trouble that causes the self-locking nail taking-up when getting nail because of " skidding ", and a kind of novel femoral interlocking intramedullary nail be provided.
Technical solution of the present utility model is: femoral interlocking intramedullary nail is made up of intramedullary pin and self-locking nail, intra medullary nail far-end is provided with a flute profile lockhole, the intramedullary pin near-end is provided with three screws, the most proximal end screw is that fracture of shaft of femur is used near-end interlocking hole, two screws are that neck of femur or intertrochanteric fracture are used near-end interlocking hole in addition, and self-locking nail is provided with two cortex screw threads.
Described intramedullary pin most proximal end screw is towards the lesser trochanter direction, and the top rake of two screws is 15 ° in addition, and last screw, following screw collodiaphyseal angle are respectively 130 ° and 135 °.
Described self-locking nail top nut is an inside and outside pair of hexagon.
This utility model is designed to flute profile with the round keyhole of traditional interlocking intramedullary nail far-end, has so both kept the laterally anti-of outer pinning and has revolved effect, has strengthened vertical power pressurization function again.This intramedullary pin near-end is designed to three screws, makes near-end interlocking usefulness when the screw right issue shaft fracture of lesser trochanter direction, for neck of femur or intertrochanteric fracture usefulness, makes this femoral interlocking nail have Gamma nail or PNF nail function concurrently towards two screws of femoral head and neck.Simultaneously self-locking nail is adopted two cortex screw threads, when guaranteeing that hold is better than single-skin drum matter screw thread self-locking nail between pinning and the bone, the no screw thread design at self-locking nail middle part, make because the interference reduction of the locking of intramedullary nail double thread shape that wearing and tearing cause, the integrity that has kept outside diameter of thread to greatest extent makes its pull-out strength be better than the full thread pinning.And the design of the inside and outside hexagon shape of self-locking nail afterbody can to overcome the pinning taking-up that " the skidding " between coping screw cutter and interior six sides caused during six sides in simple difficult, outer six sides design makes the patient increase a kind of selection of pinning removing method, can make things convenient for operation technique.
Description of drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is the self-locking nail structural representation.
Fig. 3 is a self-locking nail top nut structure sketch map.
The specific embodiment
Femoral interlocking intramedullary nail is made up of intramedullary pin 1 and self-locking nail 2, intramedullary pin 1 far-end is provided with a flute profile lockhole 3, intramedullary pin 1 near-end is provided with three screws 4,5,6, intramedullary pin 1 most proximal end screw 4 is towards the lesser trochanter of femur direction, use near-end interlocking hole as fracture of shaft of femur, two screws 5 in addition, 6 top rake is 15 °, last screw 5, following screw 6 collodiaphyseal angles are respectively 130 ° and 135 °, use near-end interlocking hole as neck of femur or intertrochanteric fracture, intramedullary pin 1 mobile jib both sides are provided with a plurality of shrinkage pools 9, and during operation, self-locking nail 2 is squeezed into fixedly intramedullary pin 1 of shrinkage pool 9 positions, self-locking nail 2 is provided with two cortex screw threads 7, and self-locking nail 2 top nuts are inside and outside pair of hexagon 8.
The application of this utility model femoral interlocking intramedullary nail in fracture of shaft of femur: after the fracture of shaft of femur broken ends of fractured bone is resetted, to the greater trochanter place this intramedullary pin 1 is axially squeezed into femoral shaft along pulp cavity, pass through fracture site, under the help of guider, electric drill boring, self-locking nail 2 is locked the distal locking flute profile lockhole 3 of intramedullary pin 1, and this self-locking nail 2 is close to groove flute profile lockhole 3 far-ends and is locked, and can move to near-end when making its axial pressure; In addition self-locking nail 2 is locked towards the screw 4 of lesser trochanter direction along intramedullary pin 1 near-end, can be played the near-end pressurization.
The application of this utility model interlocking intramedullary nail in neck of femur or intertrochanteric fracture: after the fracture of femoral neck broken ends of fractured bone is resetted, to the greater trochanter place this intramedullary pin 1 is axially squeezed into femoral shaft along pulp cavity, along two screws 5,6 towards the neck of femur direction, squeeze into one piece of cancellous bone screw respectively, make it have the function of Gamma nail or PNF nail simultaneously.
Claims (3)
1, femoral interlocking intramedullary nail is made up of intramedullary pin (1) and self-locking nail (2), it is characterized in that: intramedullary pin (1) far-end is provided with a flute profile lockhole (3), intramedullary pin (1) near-end is provided with three screws (4,5,6), most proximal end screw (4) is used near-end interlocking hole for fracture of shaft of femur, two screws (5,6) are that neck of femur or intertrochanteric fracture are used near-end interlocking hole in addition, and self-locking nail (2) is provided with two cortex screw threads (7).
2, femoral interlocking intramedullary nail as claimed in claim 1, it is characterized in that: described intramedullary pin (1) most proximal end screw (4) is towards the lesser trochanter direction, the top rake of two screws (5,6) is 15 ° in addition, and last screw (5), following screw (6) collodiaphyseal angle are respectively 130 ° and 135 °.
3, femoral interlocking intramedullary nail as claimed in claim 1 is characterized in that: described self-locking nail (2) top nut is an inside and outside pair of hexagon (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820030035XU CN201239191Y (en) | 2008-08-22 | 2008-08-22 | Intramedullary nail for locking fractured femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820030035XU CN201239191Y (en) | 2008-08-22 | 2008-08-22 | Intramedullary nail for locking fractured femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201239191Y true CN201239191Y (en) | 2009-05-20 |
Family
ID=40712477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820030035XU Expired - Fee Related CN201239191Y (en) | 2008-08-22 | 2008-08-22 | Intramedullary nail for locking fractured femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201239191Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632600A (en) * | 2009-05-27 | 2010-01-27 | 国华 | Interlocking intramedullary nail preventing bone nonunion |
| CN101779981A (en) * | 2010-02-25 | 2010-07-21 | 张磊 | Locking gamma nail |
| CN102525690A (en) * | 2012-01-13 | 2012-07-04 | 南方医科大学 | Improved artificial femoral stem and nail implanting guide frame thereof |
| CN105395245A (en) * | 2015-12-16 | 2016-03-16 | 贝尔泰克医疗器械江苏有限公司 | Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing |
| CN105997215A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Tibia inverted intramedullary nail |
| CN105997218A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Humeral inverted intramedullary nail |
| CN108433798A (en) * | 2018-04-16 | 2018-08-24 | 无锡市第九人民医院 | A kind of intramedullary nail with locking steel plate effect |
| CN108523983A (en) * | 2018-03-22 | 2018-09-14 | 中国人民解放军第七五医院 | A kind of blocking nail merging auxiliary device |
| CN109480988A (en) * | 2018-12-05 | 2019-03-19 | 常州市康辉医疗器械有限公司 | A kind of improved interlocking formula tibial intramedullary nailing |
| CN113229916A (en) * | 2020-06-02 | 2021-08-10 | 林凤飞 | Anti-rotation interlocking intramedullary nail suite |
-
2008
- 2008-08-22 CN CNU200820030035XU patent/CN201239191Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632600A (en) * | 2009-05-27 | 2010-01-27 | 国华 | Interlocking intramedullary nail preventing bone nonunion |
| CN101779981A (en) * | 2010-02-25 | 2010-07-21 | 张磊 | Locking gamma nail |
| CN102525690A (en) * | 2012-01-13 | 2012-07-04 | 南方医科大学 | Improved artificial femoral stem and nail implanting guide frame thereof |
| CN102525690B (en) * | 2012-01-13 | 2014-04-02 | 南方医科大学 | Improved artificial femoral stem and nail implanting guide frame thereof |
| CN105395245A (en) * | 2015-12-16 | 2016-03-16 | 贝尔泰克医疗器械江苏有限公司 | Device for preventing interlocking nail of interlocking intramedullary nail from nail releasing |
| CN105997218A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Humeral inverted intramedullary nail |
| CN105997215A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Tibia inverted intramedullary nail |
| CN108523983A (en) * | 2018-03-22 | 2018-09-14 | 中国人民解放军第七五医院 | A kind of blocking nail merging auxiliary device |
| CN108433798A (en) * | 2018-04-16 | 2018-08-24 | 无锡市第九人民医院 | A kind of intramedullary nail with locking steel plate effect |
| CN108433798B (en) * | 2018-04-16 | 2023-12-22 | 无锡市第九人民医院 | Intramedullary nail with steel plate locking effect |
| CN109480988A (en) * | 2018-12-05 | 2019-03-19 | 常州市康辉医疗器械有限公司 | A kind of improved interlocking formula tibial intramedullary nailing |
| CN109480988B (en) * | 2018-12-05 | 2024-02-23 | 常州市康辉医疗器械有限公司 | Improved interlocking tibia intramedullary nail |
| CN113229916A (en) * | 2020-06-02 | 2021-08-10 | 林凤飞 | Anti-rotation interlocking intramedullary nail suite |
| CN113229916B (en) * | 2020-06-02 | 2022-04-08 | 林凤飞 | Anti-rotation interlocking intramedullary nail suite |
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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: 20090520 Termination date: 20100822 |