CN202136408U - Body surface auxiliary positioning locking type interlocking intramedullary nail half-threaded positioning device - Google Patents
Body surface auxiliary positioning locking type interlocking intramedullary nail half-threaded positioning device Download PDFInfo
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- CN202136408U CN202136408U CN201120254332U CN201120254332U CN202136408U CN 202136408 U CN202136408 U CN 202136408U CN 201120254332 U CN201120254332 U CN 201120254332U CN 201120254332 U CN201120254332 U CN 201120254332U CN 202136408 U CN202136408 U CN 202136408U
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- intramedullary nail
- hole
- positioning
- body surface
- thread
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- 210000000689 upper leg Anatomy 0.000 claims description 10
- 210000002303 tibia Anatomy 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 210000000988 bone and bone Anatomy 0.000 abstract description 6
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 238000001356 surgical procedure Methods 0.000 abstract 4
- 238000002324 minimally invasive surgery Methods 0.000 abstract 1
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 208000037816 tissue injury Diseases 0.000 description 1
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Abstract
The utility model discloses a body surface auxiliary positioning locking type interlocking intramedullary nail half-threaded positioning device. A novel intramedullary nail positioner with a lock is T-shaped, threads with the size of 3mm are arranged at the tail end of the positioner, an annular limiting groove is disposed at a near end of the positioner, the width of the annular limiting groove is 6mm while the depth of the annular limiting groove is 1.5mm, an upper hole of an intramedullary nail positioning hole is a through hole with the size of 5mm, a lower hole of the intramedullary nail positioning hole is an inner-threaded hole with the size of 3mm and is locked with the positioner, a limiting groove is changed into a limiting annular groove, a body surface auxiliary positioning device is in the shape of a finger grabbing imitation half ring and is used with a locking positioning aiming device, and accordingly a positioning guider is maintained at a front center line of a fixed bone. Errors due to stress deformation of a nail body, deviation of nail inlet points, mismatching of bone radian and intramedullary nail radian are eliminated. Surgery difficulty is reduced, surgery precision is improved, and further, the positioning device not only meets modern minimally invasive surgery principles, but also shortens surgery time. In addition, the positioning device still can be used under the condition that an original intramedullary nail aiming system is not changed, is simple in structure, convenient in use and accurate in positioning, and is widely applied to orthopedic surgeries of various hospitals.
Description
Technical field
This utility model relates to the orthopaedic medical treatment utensil, when being specifically related to femur and fracture of shaft of tibia interlocking intramedullary nail internal fixation through body surface assist location locking-type interlocking intramedullary nail half-thread positioner.
Background technology
Femur and tibia intramedullary nail with lock system are treatment femur and the most frequently used operating theater instruments and the inner matter of fracture of shaft of tibia.Clinical widely-used.Whether the location accurately is related to the success or failure of operation, and the design of in long-term clinical operation, finding existing interlocking intramedullary nail system is squeezing into for intramedullary pin in the pulp cavity of fracture that force direction is different multiple strain takes place to be caused aiming location generation deviation because of receiving.The doctor can only adjust by the personal experience, and poor accuracy causes position error, and operation can't be accomplished.Can only enlarge means completion operations such as locating hole by X-ray machine, increase of the infringement of X line, strengthen the wound of operation patient and medical worker.Medical treatment cost and surgical technic threshold have been increased.
This utility model retrieves the utility model patent in " interlocking intramedullary nail of band distal end positioning screw hole " of the application on the 29th of calendar year 2001 December by Zhou Zhijian before application; Its application number is 01278592.X; Another piece is by the utility model patent of former " the fracture internal fixation elastic dynamic interlocking intramedullary nail " on February 18th, 2004 application in Ji; Its application number is 200420003282.2; Above-mentioned two patents and the existing interlocking intramedullary nail of being produced by Chang Zhou Nanxiang District medical apparatus and instruments company limited all exist stable not the matching with poor accuracy and the stressed generation strain of intramedullary pin and bone and intramedullary pin radian of localizer to deform or the operating technology difficulty is big etc. that factor causes that pinning is failed.Higher technological door, numerous low age and service seniority doctors be difficult for to grasp in a short time, and take out defective such as difficulty after the union of fracture.
Summary of the invention
The purpose of this utility model is on the basis that former intramedullary nail with lock and location sighting device structure do not change, to provide a kind of simple in structure; Easy to use; Accurate positioning; After the position and lock rod lock, intramedullary pin and sight become holistic through body surface assist location locking-type interlocking intramedullary nail half-thread positioner.
In order to overcome the deficiency of prior art, the technical scheme of this utility model is to solve like this: a kind of through body surface assist location locking-type interlocking intramedullary nail half-thread positioner, this device comprises the parts of existing interlocking intramedullary nail device; The special adaptations part of this utility model is that described body surface auxiliary locator is the semi-ring arc body, and wherein, semi arch body one end has at least two through holes at interval; The other end has two tapped holes, and said T type length of connecting rod is 100mm～140 mm, diameter phi 8 mm～φ 10 mm; End has the external screw thread of φ 8mm; The position, upper end of said lock in place device one end has spacing cannelure, and the other end connects the thin bar of 3 mm～5mm, the terminal external screw thread that connects of thin bar; The groove width of the spacing cannelure of said lock in place device is 5mm～7mm; Groove depth is 1.0 mm～2.0mm, and cannelure to thread root spacing is 145mm～155mm, and bore dia φ is the through hole of 4 mm～6 mm on the terminal locating hole of said intramedullary pin; Following bore dia φ is the hole of the female thread of 2mm～4mm, and said intramedullary pin lock hole screws in shallow thread tapping screw and femur or tibia locking after guide pipe boring.
This utility model compared with prior art; Solved existing interlocking intramedullary nail accurate positioning property difference and with the stressed back of nail body slight distortion has taken place, a deviation is followed closely in distortion in the operation; The deficiencies of distal locking nail difficulty that cause fracturing such as bone radian and intramedullary pin radian do not match, and have following characteristics:
1, intra medullary nail far-end locating hole half-thread design had both helped convenient accurately location, allowed in practical operation, to occur tiny deviation again.
2, the body surface auxiliary locator can guarantee that the intramedullary pin locating hole is positioned on the axis of femur and distal tibial, and can intuitive judgment interlocking intramedullary nail terminal position.
3, reduced the injury of patient and medical worker x light, reduced interlocking intramedullary nail operating technology difficulty, simple and practical, easy master has reduced technical threshold.
4, solved old fracture, femur radian and intramedullary pin radian do not match, and the deviation that entry point deviation etc. causes adopts the easily intuitively adjustment of device after improving, and accurately pins distal locking nail.
5, pinning is used 5mm shallow thread tapping screw instead, not only prevents the nail loose slippage but also be convenient to easily take out in the future, reduces tissue injury.
6, locating hole bores with 5mm, and the position and lock bar is 4mm through place, bone hole, leaves the adjustment space.
7, the intramedullary pin locating hole is changed by original platform or groove into bore dia φ is the through hole of 4 mm～6 mm on the terminal locating hole of intramedullary pin; Following bore dia φ is the internal thread hole of 2mm～4mm; After the position and lock rod lock, intramedullary pin and sight become an integral body, and it is more accurate to lead.
8, locking nail hole is 5mm, leads to bore to be 4mm, and slight deviations can not influence to lead and drill through locking nail hole.
Simple in structure, easy to use, accurate positioning is widely used in each hospital orthopedics operation.
Description of drawings
Fig. 1 is the body surface auxiliary locator structural representation of this utility model;
Fig. 2 is the enlarged drawing of overlooking of Fig. 1;
Fig. 3 is the T type bar linkage structure sketch map of body surface auxiliary locator;
Fig. 4 is the lock in place device structural representation after improving;
Fig. 5 is the pinning structural representation after improving;
Fig. 6 is the terminal locating hole cross-sectional view of the intramedullary pin after improving.
The specific embodiment
Accompanying drawing is the embodiment of this utility model.
Below in conjunction with accompanying drawing summary of the invention is described further:
With reference to Fig. 1～shown in Figure 6, a kind of through body surface assist location locking-type interlocking intramedullary nail half-thread positioner, this device comprises the parts of existing interlocking intramedullary nail device; That is to say that increasing the body surface auxiliary locator is semi-ring arc body 1, wherein on the basis of each the parts annexation of interlocking intramedullary nail that does not change the medical apparatus and instruments company limited production of existing Chang Zhou Nanxiang District; Semi arch body 1 one ends have at least two through holes 2 at interval, and the other end has tapped hole 3, and the length of T type adjusting rod 4 is 100mm～140 mm; Diameter phi 8 mm～φ 10 mm; End has the external screw thread of φ 8mm, and the position of the upper end of said lock in place device 6 one ends has spacing cannelure 5, and the other end connects the thin bar 7 of 3 mm～5mm; The thin bar 7 terminal external screw threads 8 that connect; The limited impression of said lock in place device 6 changes spacing cannelure 5 into, and the groove width of spacing cannelure 5 is 5mm～7mm, and groove depth is 1.0 mm～2.0mm; Cannelure to thread root spacing is 145mm～155mm; The improvement of cannelure makes that Fig. 3 locating rod can 360 ℃ of rotations, guarantees stop is in office where can install by the position, can finely tune again that bore dia φ is the through hole 9 of 4 mm～6 mm on the terminal locating hole of said intramedullary pin as above-below direction; The hole 10 of the female thread that following bore dia φ is 2mm～4mm, said intramedullary pin lock hole screw in shallow thread tapping screw 11 and femur or tibia locking after guide pipe boring.Saved the tapping program of former pinning, be difficult for again getting loose, and convenient to remove after the union of fracture.
In sum; The body surface auxiliary locator is that semi-circular imitative thumb and middle finger pinch the lower limb shape, scalable, and a side has screw 8mm; Be connected with the T type bar 9mm of end band 8mm screw thread; Through the distal locking nail positioner, regulate femur and distal tibial and sight arm apart from angle, assurance locating rod guide pipe is positioned on the anterior midline of femur or tibia.
Locating hole bores with 5mm, and the pinning locating rod is 4mm through the bone bore portion, and end thread is 3mm, leaves the tiny deviation in adjustment space, utilizes the body surface auxiliary locator easily to adjust and to lock after detecting with thin Kirschner wire.Let the intramedullary nail with lock operation become simple, abecedarian Geng Yi grasps, and it is safer reliable to perform the operation.
Pinning changes 5mm shallow thread tapping screw into, is difficult for getting loose, and does not need tapping, saves operating time, and take out easily the back.Use instead through the auxiliary half-thread locking-type localization method of body surface, solved interlocking intramedullary nail distal locking nail difficulty, the high difficult problem of failure efficient with simple method.
Claims (1)
1. one kind through body surface assist location locking-type interlocking intramedullary nail half-thread positioner, and this device comprises the parts of existing interlocking intramedullary nail device, it is characterized in that described body surface auxiliary locator is semi-ring arc body (1); Wherein, semi arch body (1) one end has at least two through holes (2) at interval, and the other end has two tapped holes (3); Said T type connecting rod (4) is long to be 100mm～140 mm; Diameter phi 8 mm～φ 10 mm, end has the external screw thread of φ 8mm, and the position, upper end of said lock in place device (6) one ends has spacing cannelure (5); The other end connects the thin bar of 3 mm～5mm (7); The terminal external screw thread (8) that connects of thin bar (7), the groove width of the spacing cannelure (5) of said lock in place device (6) is 5mm～7mm, groove depth is 1.0 mm～2.0mm; Cannelure to thread root spacing is 145mm～155mm; Bore dia φ is 4 mm～6 mm through holes (9) on the terminal locating hole of said intramedullary pin, the internal thread hole (10) that following bore dia φ is 2mm～4mm, and said intramedullary pin is terminal to be connected with femur or tibia through locating hole screw-in shallow thread tapping screw (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254332U CN202136408U (en) | 2011-07-19 | 2011-07-19 | Body surface auxiliary positioning locking type interlocking intramedullary nail half-threaded positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254332U CN202136408U (en) | 2011-07-19 | 2011-07-19 | Body surface auxiliary positioning locking type interlocking intramedullary nail half-threaded positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202136408U true CN202136408U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120254332U Expired - Fee Related CN202136408U (en) | 2011-07-19 | 2011-07-19 | Body surface auxiliary positioning locking type interlocking intramedullary nail half-threaded positioning device |
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| CN (1) | CN202136408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103800077A (en) * | 2014-02-25 | 2014-05-21 | 贺新宁 | Lotus-root-shaped guide locator |
| CN108888312A (en) * | 2018-06-21 | 2018-11-27 | 中国人民解放军第二军医大学第二附属医院 | Orthopedic section of bone plate system of one kind and operating method |
-
2011
- 2011-07-19 CN CN201120254332U patent/CN202136408U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103800077A (en) * | 2014-02-25 | 2014-05-21 | 贺新宁 | Lotus-root-shaped guide locator |
| CN108888312A (en) * | 2018-06-21 | 2018-11-27 | 中国人民解放军第二军医大学第二附属医院 | Orthopedic section of bone plate system of one kind and operating method |
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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 |
Granted publication date: 20120208 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |