CN2626448Y - Broken bolt extractor for orthopaedics - Google Patents
Broken bolt extractor for orthopaedics Download PDFInfo
- Publication number
- CN2626448Y CN2626448Y CN 03258087 CN03258087U CN2626448Y CN 2626448 Y CN2626448 Y CN 2626448Y CN 03258087 CN03258087 CN 03258087 CN 03258087 U CN03258087 U CN 03258087U CN 2626448 Y CN2626448 Y CN 2626448Y
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- China
- Prior art keywords
- guide pin
- handle
- sleeve
- sleeve pipe
- screw
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Abstract
A broken bolt extractor for bone surgery comprises a guide needle, a sleeve and a handle, wherein the front end of the guide needle has a screw thread and the tail end of the guide needle has a multiple prismatic structure; the sleeve is a thin hollow tube matching with the guide needle, an annular one-way cutting edge and internal screw thread are disposed at the top end of the sleeve, and a multiple prismatic structure that is concentrical with the guide needle disposed at the tail end of the sleeve; the handle is composed of a sleeve head and two holders, a multiple prismatic sleeve hole is disposed at the center of the sleeve head, one holder is fixedly connected with one end of the sleeve head, and the other holder is movably connected with the other end of the sleeve head in accordance with the screw thread. The utility model has the following advantages: (1) low amount of bleeding during operation, low damage to sclerotin and soft tissues during surgery, easy and labor-saving operation, smooth broken bolt extraction process, and having certain clinic use value; (2) having forward propulsion and reverse withdrawal functions, and uniform and stable bidirectional acting force; (3) the guide needle and sleeve internal screw thread both have guiding effect, the design of the screw thread of the guide needle and the one-way cutting edge of the sleeve can both incise sclerotin and be easily withdrawn under the action of rotary thrust.
Description
(1) technical field:
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of be applied to orthopedic internal fixation after/Orthopeadic Surgery after metallic screw fractures takes place in the art with screw broken nail extractor.
(2) background technology:
At present, metallic screw is an Orthopeadic Surgery internal fixation apparatus commonly used, and the application of such screw makes reliable, the satisfactory effect of fracture internal fixation.But, in clinical use,, so how broken nail is taken out if screw wrecks, then be a very problem of difficulty, even therefore can cause operative failure.At the head of a nail, nail body fracture, situation such as disconnected body caves in, developing relevant screw broken nail extractor is vast Orthopeadic Surgery medical personnel's important topic.
(3) summary of the invention:
The purpose of this utility model is to design a kind of Orthopeadic Surgery screw broken nail extractor, and it makes, and the broken nail taking-up no longer is the problem of a difficulty in the bone, is a kind of practical novel orthopedic medical device.
The technical solution of the utility model: a kind of Orthopeadic Surgery screw broken nail extractor, it is characterized in that it is made of guide pin, sleeve pipe and handle, said guide pin is a steel fine needle barred body, and its front end is threaded, many fusiform structures that the guide pin tail end helps cooperating; Said sleeve pipe is a thin hollow pipe that promptly is enclosed within the guide pin outside that should match with the same specification guide pin, unidirectional cutting edge of ring-type and sleeve pipe front end that cannula tip helps cutting sclerotin have with the isometric female thread of guide pin front end screw thread, its tail end be designed to be beneficial to equally cooperation with the concentric many fusiform structures of guide pin; Said handle is made of pullover and disymmetrical handle, there is many ribs shape trepanning that can match with guide pin and telescopic many fusiform structures at pullover center, one handle is fixedlyed connected with the first end of cover, another handle is lived according to screw thread with the pullover other end and is connected, and the thread head of this handle can screw out in the rib planar ends of many ribs shape trepanning.
The flight pitch that above-mentioned said guide pin front end has equates with existing fracture internal fixation AO system screw thread spacing.
Many fusiform structures that above-mentioned said guide pin and sleeve pipe tail end have can be rhizoma sparganic shape, four rib shapes, five rib shapes or six rib shapes; Many ribs shape trepanning of the handle that matches with guide pin and telescopic many fusiform structures can be rhizoma sparganic shape, four rib shapes, five rib shapes or six rib shapes equally.
The screw thread that above-mentioned said guide pin front end has can have the length of 2-4cm, and said sleeve pipe female thread can have the length of 2-4cm equally.
Above-mentioned said guide pin diameter can be divided into 6.0mm, 5.5mm, 4.5mm and 3.2mm and other clinical suitable specification.
Above-mentioned its internal diameter of said sleeve pipe is divided into 6.1mm, 5.6mm, 4.6mm and 3.3mm and other clinical suitable specification, the desirable 0.4-0.6mm of wall thickness.
Above-mentioned said adnexa also can have one be convenient to the thimble that broken nail from sleeve pipe ejected of guide pin with diameter.
The clinical explanation that is suitable for three kinds of situations of the present utility model: when 1. the broken nail stump was exposed or equal with cortical bone: we directly operated on broken nail with the same specification sleeve pipe, can be considered as guide pin this moment with broken nail, operate very easy, directly sleeve pipe is fixed on the broken nail behind the location, when sleeve pipe along broken nail after the effect incision of revolving force opens seam matter (forward progradation), broken nail will become flexible gradually, at this moment between sleeve pipe and the broken nail, because by some tissue debris fillings, the corresponding increase of friction, therefore when our reverse rotation sleeve pipe (oppositely withdrawing from effect), broken nail will together be taken out of by sleeve pipe.When 2. the broken nail main body was positioned at bone: we were under the guiding of " C " type arm, be screwed into guide pin along former osseous tunnel, contact with broken nail up to guide pin, this moment, guide pin and broken nail were all " integral body " (guide pin is equivalent to deviate from part after screw fractures) on the same straight line and with broken nail, pierce along guide pin with the same specification sleeve pipe again, loosening up to broken nail, operation is with last identical later on.When 3. broken nail was wrapped up by callus: can remove callus in right amount with osteotome earlier, operation later on selected to use above two kinds of methods according to situation.
Using method of the present utility model and work process are: after treating that anesthesia is satisfied, the patient gets corresponding position, operation under " C " type arm x-ray machine; Routine disinfection cuts skin along former operative incision, separates subcutaneous tissue up to the green bone end that fractures; If when the bone inner bolt wrecks, guide pin can easily enter in the bone along former osseous tunnel.When guide pin with after broken nail contacts, guide pin both with broken nail with in a straight line, can be considered with broken nail and be all " integral body ", help the location; When guide pin when small angle being arranged therebetween after former broken nail contacts, sleeve pipe front end female thread can play the effect of automatic direction regulating; Many fusiform structures of guide pin tail end can be connected with many ribs of scalable shape trepanning of handle, help the fixed handle drilling operation; Sleeve pipe can be used for cutting sclerotin with the unidirectional cutting edge of ring-type that its top has, and many fusiform structures of sleeve pipe tail end can be connected with many ribs of scalable shape trepanning of handle equally, applicable to connecting handle or power drill.
Superiority of the present utility model is: 1, little in few, the art of bone inner bolt broken nail extractor when operation amount of bleeding to sclerotin and soft tissue destruction, wound is little again, rapid operation, easy, broken nail takes out smoothly, postoperative is followed up a case by regular visits to complication such as not having fracture in 3 months and is taken place, and has certain value for clinical application; 2, native system has the dual-use function that forward advances and oppositely withdraws from because be the power type design, and two-way function power is even, stable; 3, guide pin has the guiding guide effect, and the sleeve pipe female thread can have the guiding guide effect equally, all can open seam in the effect incision of rotary thrust matter and easily withdrawing from of the screw thread design of guide pin and telescopic unidirectional cutting edge.
(4) description of drawings:
Accompanying drawing 1 is the guide pin structural representation (Fig. 1-a be front view, Fig. 1-b be the upward view of Fig. 1-a) of the related a kind of Orthopeadic Surgery of this utility model with screw broken nail extractor.
Accompanying drawing 2 is the sleeve structure sketch map (Fig. 2-a be front view, Fig. 2-b for the B portion office of Fig. 2-a put figure) of the related a kind of Orthopeadic Surgery of this utility model with screw broken nail extractor.
Accompanying drawing 3 is the handle arrangement sketch map of the related a kind of Orthopeadic Surgery of this utility model with screw broken nail extractor.
Accompanying drawing 4 is the overall structure assembling sketch map (Fig. 4-a be front view, Fig. 4-b be the upward view of Fig. 4-a, Fig. 4-c for the A portion office of Fig. 4-a put figure) of the related a kind of Orthopeadic Surgery of this utility model with screw broken nail extractor.
Accompanying drawing 5 is the adnexa thimble structure sketch map of the related a kind of Orthopeadic Surgery of this utility model with screw broken nail extractor.
Wherein: 1 is guide pin, and 1a is the threaded front end of guide pin, and 1b is many fusiform structures of guide pin tail end, 2 is sleeve pipe, and 2a is the unidirectional cutting edge of the ring-type of cannula tip, and 2b is many fusiform structures of sleeve pipe tail end, 2c is the female thread of sleeve pipe front end, and 3 is handle, and 3a is the pullover of handle, 3b is the stiff end handle of handle, 3c is the scalable end handle of handle, and 3d is many ribs shape trepanning of handle, and 3e is handle and the pullover screw thread of living and being connected, 4 is thimble, and 4a is the handle of thimble.
(5) specific embodiment:
Embodiment: a kind of Orthopeadic Surgery is with screw broken nail extractor (seeing Fig. 1-4), it is characterized in that it is made of guide pin 1, sleeve pipe 2 and handle 3, said guide pin 1 is a steel fine needle barred body, and its front end is threaded 1a, and guide pin 1 tail end helps many fusiform structures 1b of cooperating; Said sleeve pipe 2 is the thin hollow pipes that promptly are enclosed within guide pin 1 outside that should match with same specification guide pin 1, unidirectional cutting edge 2a of ring-type and sleeve pipe 2 front ends that sleeve pipe 2 tops help cutting sclerotin have the isometric female thread 2c with guide pin 1 front end screw thread 1a, its tail end be designed to be beneficial to equally cooperation with guide pin 1 concentric many fusiform structures 2b; Said handle 3 is made of pullover 3a and disymmetrical handle 3b, 3c, pullover 3a center have can with many fusiform structures 1b of guide pin 1 and sleeve pipe 2, many ribs shape trepanning 3d that 2b matches, one handle 3b is fixedlyed connected with pullover 3a one end, another handle 3c lives according to screw thread 3e with the pullover 3a other end and is connected, and the thread head of this handle 3c can screw out in the rib planar ends of many ribs shape trepanning 3d.
The screw thread 1a spacing that above-mentioned said guide pin 1 front end has equates with existing fracture internal fixation AO system screw thread spacing.
Many fusiform structures 1b, the 2b that above-mentioned said guide pin 1 and sleeve pipe 2 tail ends have can be that the rhizoma sparganic shape (is seen Fig. 1-b and Fig. 4-b); With many ribs shape trepanning 3d of many fusiform structures 1b of guide pin 1 and sleeve pipe 2, handle 3 that 2b matches can be rhizoma sparganic shape (see figure 3) equally.
The screw thread 1a that above-mentioned said guide pin 1 front end has can have the length of 2-4cm, and said sleeve pipe 2 female thread 2c can have the length of 2-4cm equally.
Above-mentioned said guide pin 1 its diameter can be divided into the specification of 6.0mm, 5.5mm, 4.5mm and 3.2mm.
Above-mentioned said sleeve pipe 2 its internal diameters can be divided into the specification of 6.1mm, 5.6mm, 4.6mm and 3.3mm, the desirable 0.6mm of wall thickness.
Above-mentioned said adnexa also can have one be convenient to thimble 4 (see figure 5)s that broken nail from sleeve pipe 2 ejected of guide pin 1 with diameter.
Claims (7)
1, a kind of Orthopeadic Surgery is characterized in that with screw broken nail extractor it is made of guide pin, sleeve pipe and handle, and said guide pin is a steel fine needle barred body, and its front end is threaded, many fusiform structures that the guide pin tail end helps cooperating; Said sleeve pipe is a thin hollow pipe that promptly is enclosed within the guide pin outside that should match with the same specification guide pin, unidirectional cutting edge of ring-type and sleeve pipe front end that cannula tip helps cutting sclerotin have with the isometric female thread of guide pin front end screw thread, its tail end be designed to be beneficial to equally cooperation with the concentric many fusiform structures of guide pin; Said handle is made of pullover and disymmetrical handle, there is many ribs shape trepanning that can match with guide pin and telescopic many fusiform structures at pullover center, one handle is fixedlyed connected with the first end of cover, another handle is lived according to screw thread with the pullover other end and is connected, and the thread head of this handle can screw out in the rib planar ends of many ribs shape trepanning.
2, according to the said a kind of Orthopeadic Surgery of claim 1 with screw broken nail extractor, it is characterized in that flight pitch that said guide pin front end has equates with existing fracture internal fixation AO system screw thread spacing.
3, according to the said a kind of Orthopeadic Surgery of claim 1 screw broken nail extractor, it is characterized in that many fusiform structures that said guide pin and sleeve pipe tail end have can be rhizoma sparganic shape, four rib shapes, five rib shapes or six rib shapes; Many ribs shape trepanning of the handle that matches with guide pin and telescopic many fusiform structures can be rhizoma sparganic shape, four rib shapes, five rib shapes or six rib shapes equally.
4, according to the said a kind of Orthopeadic Surgery of claim 1 with screw broken nail extractor, it is characterized in that screw thread that said guide pin front end has can have the length of 2-4cm, said sleeve pipe female thread can have the length of 2-4cm equally.
5, according to the said a kind of Orthopeadic Surgery of claim 1 screw broken nail extractor, it is characterized in that its diameter of said guide pin is divided into 6.0mm, 5.5mm, 4.5mm and 3.2mm and other clinical suitable specification.
6, according to the said a kind of Orthopeadic Surgery of claim 1 screw broken nail extractor, it is characterized in that its internal diameter of said sleeve pipe is divided into 6.1mm, 5.6mm, 4.6mm and 3.3mm and other clinical suitable specification, the desirable 0.4-0.6mm of wall thickness.
7, according to the said a kind of Orthopeadic Surgery of claim 1 with screw broken nail extractor, it is characterized in that said adnexa also can have one be convenient to the thimble that broken nail from sleeve pipe ejected of guide pin with diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258087 CN2626448Y (en) | 2003-07-18 | 2003-07-18 | Broken bolt extractor for orthopaedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258087 CN2626448Y (en) | 2003-07-18 | 2003-07-18 | Broken bolt extractor for orthopaedics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2626448Y true CN2626448Y (en) | 2004-07-21 |
Family
ID=34254583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03258087 Expired - Fee Related CN2626448Y (en) | 2003-07-18 | 2003-07-18 | Broken bolt extractor for orthopaedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2626448Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102379738A (en) * | 2011-09-19 | 2012-03-21 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN103054643A (en) * | 2012-12-25 | 2013-04-24 | 李书凡 | Broken nail extractor |
-
2003
- 2003-07-18 CN CN 03258087 patent/CN2626448Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102379738A (en) * | 2011-09-19 | 2012-03-21 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN102379738B (en) * | 2011-09-19 | 2013-01-02 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN103054643A (en) * | 2012-12-25 | 2013-04-24 | 李书凡 | Broken nail extractor |
| CN103054643B (en) * | 2012-12-25 | 2014-11-26 | 李书凡 | Broken nail extractor |
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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 |