CN102813548A - Intramedullary nail extractor - Google Patents
Intramedullary nail extractor Download PDFInfo
- Publication number
- CN102813548A CN102813548A CN2012102996022A CN201210299602A CN102813548A CN 102813548 A CN102813548 A CN 102813548A CN 2012102996022 A CN2012102996022 A CN 2012102996022A CN 201210299602 A CN201210299602 A CN 201210299602A CN 102813548 A CN102813548 A CN 102813548A
- Authority
- CN
- China
- Prior art keywords
- expansion
- head
- intramedullary nail
- nail extractor
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention relates to the field of medical apparatus and instruments and discloses an intramedullary nail extractor. According to the intramedullary nail extractor disclosed by the invention, after an expansion head is put at the tail part of an intramedullary nail, an expansion rod is inserted into a hollow rod of a nail puller from a handle end; the tail part of the expansion rod is knocked and propelled to enable the expansion rod to be inserted into the expansion head; as the expansion head can be expanded after being pressed, one end of the expansion head is inlaid into threads at the tail part of the intramedullary nail by one end of the expansion head during a process of knocking and insertion; the expansion rod, the expansion head and the tail part of the intramedullary nail are firmly fitted, so that the intramedullary nail can be easily extracted. When the nail is extracted by using the intramedullary nail extractor, the intramedullary nail extractor does not need to be accurately aligned with the intramedullary nail in position when being put, therefore, the angular restriction is further reduced; the operation is simpler; and moreover, the exposure time of the surface of a wound and the operation time can be effectively shortened, and the intraoperative hemorrhage can be effectively reduced.
Description
Technical field
The present invention relates to medical instruments field, particularly the intramedullary pin in the medical domain takes out technology.
Background technology
Along with the continuous development of intramedullary pin internal fixation technology, this technology is widely used in the medical domain.So-called marrow internal fixation is meant at built-in, the inner matter with certain intensity good with human compatibility of the pulp cavity of bone far-end or near-end, to reach the fracture end fixed method.
The marrow internal fixation internal fixation treatment that is applied to fracture is existing historical for many years.The marrow internal fixation not only can be applicable to the fracture of straight shape bone, also can be used for the fracture of slight arc bone, reaches 3 fixed purposes, and can carry out functional exercise in early days, in clinical practice, is showing very strong vitality.
Behind the intramedullary pin internal fixation operation, need arrange to take out the operation of intramedullary pin according to patient's recovery situation.At present, mainly be through with of the inner thread mutually interlock of the vertical screw thread of nail-fetching device with the intramedullary pin afterbody, the mode of extracting intramedullary pin is taken out intramedullary pin.
Yet inventor of the present invention finds that in the operation practical operation, because the restriction of operative incision and operation position, the nail extractor placement direction often is difficult to make the accurate interlock of screw thread, nail pulling smoothly.And nail-fetching device is thicker, needs enough appearing just to insert.If intramedullary pin was inserted dark or callus is grown into, then intramedullary pin tailing screw flight interlock difficulty needs to enlarge wound.If the relative pulp cavity of intramedullary pin is thinner, the intramedullary pin spin then appears during threaded engagement, and cause interlock tightly not to be difficult to extract intramedullary pin.The above reason of Chang Yin caused getting nail for up to several hours clinically, and patient's post-operative recovery has also been caused considerable influence.
Summary of the invention
The object of the present invention is to provide a kind of intramedullary nail extractor; Make intramedullary pin to take out easily; Use this intramedullary nail extractor to get nail, do not need accurately to aim at the position of intramedullary nail extractor and intramedullary pin when placing intramedullary nail extractor, angle limits further reduces; Operate simplyr, and can effectively reduce wound surface exposure, operating time and intraoperative hemorrhage.
For solving the problems of the technologies described above, embodiment of the present invention discloses a kind of intramedullary nail extractor, comprising: nail extractor (1), expansion rod (2) and expansion-head (3);
Nail extractor (1) comprises handle (4) and hollow stem (5); This hollow stem (5) is the open circles tubular; One end is embedded in the handle (4); And the whole handle of break-through (4), the other end are exposed at handle (4) outside, and the inner wall at end that hollow stem (5) is exposed at handle (4) outside one end is threaded;
Said expansion-head (3) is the open circles tubular, can expand behind the pressurized, and the outer wall of an end of this expansion-head (3) is threaded;
The outer diameter of said expansion-head (3) is invariable; Begin from a screwed end; The inner diameter of said expansion-head (3) from large to small; The inner diameter of a screwed end does not have the diameter of the inner diameter of screw thread one end less than said expansion rod (2) greater than the diameter of said expansion rod (2);
The outer diameter of said expansion-head (3) is less than the inner diameter of said hollow stem (5), and the outer diameter of said expansion-head (3) is less than the inner diameter of said intramedullary pin.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
The outer diameter of expansion-head is less than the inner diameter of hollow stem, and expansion-head does not have the diameter of the inner diameter of screw thread one end less than expansion rod, and the outer diameter of expansion-head is less than the inner diameter of intramedullary pin; The threaded end of expansion-head inserts the non-handle end of nail extractor hollow stem, with the threaded engagement of hollow stem inwall, is fixed into one with nail extractor; The other end is exposed at outside the hollow stem, expansion-head is placed the intramedullary pin afterbody after, from handle end expansion rod is inserted the nail extractor hollow stem; Knock and advance the expansion rod afterbody to insert it in the expansion-head; Because inflatable behind the expansion-head pressurized, therefore in knocking the process of inserting expansion rod, expansion-head is imbedded the intramedullary pin tailing screw flight with expansion; Expansion rod, expansion-head and intramedullary pin afterbody three secure fit make intramedullary pin to take out easily.Use this intramedullary nail extractor to get nail; The position that does not need accurately to aim at intramedullary nail extractor and intramedullary pin when placing intramedullary nail extractor; Angle limits further reduces, and operates simplyr, and can effectively reduce wound surface exposure, operating time and intraoperative hemorrhage.
Further,, on expansion-head, be provided with and crack, can better expand after can making the expansion-head pressurized according to the principle and the structure of expansion bolt.
Further, the expansion-head of metal material is convenient to the high-temperature sterilization sterilization, can reuse, and reduces cost.
Further, hollow stem is processed by metal material, is convenient to the high-temperature sterilization sterilization, can reuse, and reduces cost.
Further, expansion rod is processed by metal material, is convenient to the high-temperature sterilization sterilization, can reuse, and reduces cost.
Further, hand grip control makes cylindrical, is convenient to hand.
Further, xyloid handle is made simply, uses light.
Further, the handle of plastics is made simply, uses light.
Description of drawings
Fig. 1 is the structural representation of a kind of intramedullary nail extractor in the first embodiment of the invention;
Fig. 2 is the cross-sectional view of a kind of expansion-head of intramedullary nail extractor in the first embodiment of the invention;
Fig. 3 places the sketch map that inserts expansion rod behind the intramedullary pin afterbody with expansion-head in the first embodiment of the invention;
Fig. 4 knocks the sketch map that advances the expansion rod afterbody in the first embodiment of the invention;
Fig. 5 is the sketch map that expansion rod inserts expansion-head in the first embodiment of the invention.
The specific embodiment
In following narration, many ins and outs have been proposed in order to make the reader understand the application better.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations and the modification of following each embodiment, also can realize each claim of the application technical scheme required for protection.
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
First embodiment of the invention relates to a kind of intramedullary nail extractor.Fig. 1 is the structural representation of this intramedullary nail extractor.
Specifically, as shown in Figure 1, this intramedullary nail extractor comprises: nail extractor 1, expansion rod 2 and expansion-head 3.
Nail extractor 1 comprises handle 4 and hollow stem 5, and this hollow stem 5 is the open circles tubular, and an end is embedded in the handle 4, and the whole handle 4 of break-through, and the other end is exposed at handle 4 outsides, and the inner wall at end that hollow stem 5 is exposed at handle 4 outsides one end is threaded.
Among the present invention, change screw-in expansion in the body of the prior art into external plug-in type and expand, conveniently insert and take out, reduce the wound surface internal interference.
In some other embodiment of the present invention, expansion rod 2 also can be processed by other materials.
Expansion-head 3 is the open circles tubular, can expand behind the pressurized, and the outer wall of an end of this expansion-head 3 is threaded, this screw thread can with the threaded engagement of hollow stem 5 inner wall at end, expansion-head 3 and nail extractor 1 are fixed into one, easy to use, for convenience detach.In addition, the other end of expansion-head 3 does not promptly have at least 2 of end settings of screw thread to crack.Fig. 2 is the cross-sectional view of expansion-head 3.
As shown in Figure 2; The outer diameter of expansion-head 3 is invariable, begins from a screwed end, and the inner diameter of expansion-head 3 from large to small; The inner diameter of a screwed end does not have the diameter of the inner diameter of screw thread one end less than expansion rod 2 greater than the diameter of expansion rod 2;
According to the principle and the structure of expansion bolt, on expansion-head 3, be provided with and crack, can better expand after can making expansion-head 3 pressurizeds.
In addition, be appreciated that in some other embodiment of the present invention, also can be provided with on the expansion-head 3 and crack.
Expansion-head 3 is processed by metal material.The expansion-head of metal material is convenient to the high-temperature sterilization sterilization, can reuse, and reduces cost.
In addition, be appreciated that expansion-head 3 also can be processed by other material in some other embodiment of the present invention.
The outer diameter of expansion-head 3 is less than the inner diameter of hollow stem 5, and the outer diameter of expansion-head 3 is less than the inner diameter of intramedullary pin.
In this embodiment, the use of intramedullary nail extractor such as Fig. 3, Fig. 4 and shown in Figure 5.Specifically:
(1) at first, the non-handle end with expansion-head 3 threaded ends insertion hollow stems 5 with the threaded engagement of hollow stem 5 inwalls, is fixed into one with nail extractor 1, and expansion-head 3 is placed intramedullary pins 6 afterbodys.Then, from handle end expansion rod 2 is inserted into the hollow stem 5.As shown in Figure 3.The outer diameter of expansion-head is less than the inner diameter of hollow stem,
(2) knock propelling expansion rod 2 afterbodys.As shown in Figure 4.
(3) knock propelling expansion rod 2 afterbodys, expansion rod 2 is got in the expansion-head 3.As shown in Figure 5.
The outer diameter of expansion-head 3 is less than the inner diameter of intramedullary pin 6, and expansion-head 3 threaded ends insert the non-handle end of hollow stem 5, with the threaded engagement of hollow stem 5 inwalls; Be fixed into one with nail extractor 1, do not have an end of screw thread to be exposed at outside the hollow stem 5, behind expansion-head 3 placement intramedullary pins 6 afterbodys; From handle end expansion rod 2 is inserted the hollow stem 5, knock propelling expansion rod 2 afterbodys and insert it in the expansion-head 3, expansion-head 3 does not have the diameter of the inner diameter of screw thread one end less than expansion rod 2; Knock in the process that advances expansion rod 2; Expand behind expansion-head 3 pressurizeds, therefore in knocking the process of insertion, an end of expansion-head 3 imbeds intramedullary pin 6 tailing screw flights with expansion; Expansion rod, expansion-head and intramedullary pin afterbody three secure fit make intramedullary pin 6 to take out easily.Use this intramedullary nail extractor to get nail; The position that does not need accurately to aim at intramedullary nail extractor and intramedullary pin when placing intramedullary nail extractor; Angle limits further reduces, and operates simplyr, and can effectively reduce wound surface exposure, operating time and intraoperative hemorrhage.
Second embodiment of the invention relates to a kind of intramedullary nail extractor.
Second embodiment improves on the basis of first embodiment, and main improvements are:
Change expansion-head 3 into inner core through inflation or bath pressurization.
Under the enough big situation of pressure, even individual water pocket also can embed the tailing screw flight of intramedullary pin.Therefore, the expansion-head 3 in the intramedullary nail extractor also can be through the inner core of inflation or bath pressurization, makes the present invention to realize flexibly.
This embodiment is compared with first embodiment; Just pressuring method is different; It is consistent with first embodiment to get the nail principle; Therefore also can reach the effect of first embodiment fully: make that the taking-up of intramedullary pin is very convenient, situation of difficult can not occur extracting, will significantly reduce patient's wound and post-operative complication.
Though through reference some preferred implementation of the present invention; The present invention is illustrated and describes; But those of ordinary skill in the art should be understood that and can do various changes to it in form with on the details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. an intramedullary nail extractor is characterized in that, comprising: nail extractor (1), expansion rod (2) and expansion-head (3);
Said nail extractor (1) comprises handle (4) and hollow stem (5); This hollow stem (5) is the open circles tubular; One end is embedded in the handle (4); And the whole handle of break-through (4), the other end are exposed at handle (4) outside, and the inner wall at end that hollow stem (5) is exposed at handle (4) outside one end is threaded;
Said expansion-head (3) is the open circles tubular, can expand behind the pressurized, and the outer wall of an end of this expansion-head (3) is threaded;
The outer diameter of said expansion-head (3) is invariable; Begin from a screwed end; The inner diameter of said expansion-head (3) from large to small; The inner diameter of a screwed end does not have the diameter of the inner diameter of screw thread one end less than said expansion rod (2) greater than the diameter of said expansion rod (2);
The outer diameter of said expansion-head (3) is less than the inner diameter of said hollow stem (5), and the outer diameter of said expansion-head (3) is less than the inner diameter of said intramedullary pin.
2. intramedullary nail extractor according to claim 1 is characterized in that, said expansion-head (3) does not have an end of screw thread to be provided with at least 2 to crack.
3. intramedullary nail extractor according to claim 2 is characterized in that, said expansion-head (3) is processed by metal material.
4. intramedullary nail extractor according to claim 3 is characterized in that, said hollow stem (5) is processed by metal material.
5. intramedullary nail extractor according to claim 4 is characterized in that, said expansion rod (2) is processed by metal material.
6. intramedullary nail extractor according to claim 4 is characterized in that, said expansion rod (2) is processed by macromolecule polymer material.
7. intramedullary nail extractor according to claim 1 is characterized in that, said handle (4) is whole cylindrical.
8. intramedullary nail extractor according to claim 7 is characterized in that, said handle (4) is processed by wood.
9. intramedullary nail extractor according to claim 7 is characterized in that, said handle (4) is made of plastics.
10. according to each described intramedullary nail extractor in the claim 1 to 9, it is characterized in that said expansion-head (3) is the inner core through inflation or bath pressurization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299602.2A CN102813548B (en) | 2012-08-21 | 2012-08-21 | Intramedullary nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299602.2A CN102813548B (en) | 2012-08-21 | 2012-08-21 | Intramedullary nail extractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102813548A true CN102813548A (en) | 2012-12-12 |
| CN102813548B CN102813548B (en) | 2015-04-29 |
Family
ID=47298244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299602.2A Expired - Fee Related CN102813548B (en) | 2012-08-21 | 2012-08-21 | Intramedullary nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102813548B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104434295A (en) * | 2014-11-07 | 2015-03-25 | 中国人民解放军第四军医大学 | Special screw driver for taking orthopaedic internal fixed slip screw |
| CN109567926A (en) * | 2019-01-18 | 2019-04-05 | 莒县人民医院 | A kind of broken nail withdrawing device of orthopaedics hollow nail |
| CN110623722A (en) * | 2019-09-26 | 2019-12-31 | 河北医科大学第三医院 | Broken intramedullary nail main nail extracting device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994012112A1 (en) * | 1992-11-21 | 1994-06-09 | Erwin Ludwig Klinge | Expanding intramedullary nail |
| WO1999063898A1 (en) * | 1998-06-12 | 1999-12-16 | Macey Theodore I | Method and apparatus for removing a rod from tissue of an organism |
| DE20316629U1 (en) * | 2002-11-30 | 2004-01-22 | Ferber, Ottfried, Dr. | Surgical slide hammer for removing medullary nails has exchangeable expansion tips with different surfaces to engage ends of nails |
| CN201453370U (en) * | 2009-06-29 | 2010-05-12 | 吴争鸣 | extractor for various interlocking intramedullary nails |
| CN201624770U (en) * | 2010-02-11 | 2010-11-10 | 成都峻峰科技开发有限公司 | Anti-exposed expansion rod of interlocking intramedullary nail extractor |
| CN201734776U (en) * | 2010-06-11 | 2011-02-09 | 杨铁毅 | Intramedullary nail extractor |
| KR20110116723A (en) * | 2010-04-20 | 2011-10-26 | 한창기전 주식회사 | Bone compression equipment for kyphoplasty |
| CN202875463U (en) * | 2012-08-21 | 2013-04-17 | 杨铁毅 | Intramedullary nail extracting device |
-
2012
- 2012-08-21 CN CN201210299602.2A patent/CN102813548B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994012112A1 (en) * | 1992-11-21 | 1994-06-09 | Erwin Ludwig Klinge | Expanding intramedullary nail |
| WO1999063898A1 (en) * | 1998-06-12 | 1999-12-16 | Macey Theodore I | Method and apparatus for removing a rod from tissue of an organism |
| DE20316629U1 (en) * | 2002-11-30 | 2004-01-22 | Ferber, Ottfried, Dr. | Surgical slide hammer for removing medullary nails has exchangeable expansion tips with different surfaces to engage ends of nails |
| CN201453370U (en) * | 2009-06-29 | 2010-05-12 | 吴争鸣 | extractor for various interlocking intramedullary nails |
| CN201624770U (en) * | 2010-02-11 | 2010-11-10 | 成都峻峰科技开发有限公司 | Anti-exposed expansion rod of interlocking intramedullary nail extractor |
| KR20110116723A (en) * | 2010-04-20 | 2011-10-26 | 한창기전 주식회사 | Bone compression equipment for kyphoplasty |
| CN201734776U (en) * | 2010-06-11 | 2011-02-09 | 杨铁毅 | Intramedullary nail extractor |
| CN202875463U (en) * | 2012-08-21 | 2013-04-17 | 杨铁毅 | Intramedullary nail extracting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104434295A (en) * | 2014-11-07 | 2015-03-25 | 中国人民解放军第四军医大学 | Special screw driver for taking orthopaedic internal fixed slip screw |
| CN109567926A (en) * | 2019-01-18 | 2019-04-05 | 莒县人民医院 | A kind of broken nail withdrawing device of orthopaedics hollow nail |
| CN110623722A (en) * | 2019-09-26 | 2019-12-31 | 河北医科大学第三医院 | Broken intramedullary nail main nail extracting device |
| CN110623722B (en) * | 2019-09-26 | 2022-07-26 | 河北医科大学第三医院 | Broken intramedullary nail main nail extracting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102813548B (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202875463U (en) | Intramedullary nail extracting device | |
| US9408647B2 (en) | Method and apparatus for use of a compressing plate | |
| WO2009153372A3 (en) | Implant extraction tool | |
| CN202015221U (en) | Dismal bone core extraction device capable of automatically cutting | |
| CN102813548A (en) | Intramedullary nail extractor | |
| ITBO20020083U1 (en) | NEEDLE IMPROVED INSTRUMENT FOR THE COLLECTION OF BIOPTIC OSTEOMIDOLLAR SAMPLES | |
| CN105286975B (en) | A kind of reinforcement type compression fracture pulling off reset device | |
| CN201734776U (en) | Intramedullary nail extractor | |
| CN205514869U (en) | Point -to -point screw direction fracture resetting means | |
| CN204708960U (en) | A kind of clavicular fracture Wicresoft Medullary fixation device | |
| KR101786466B1 (en) | Cannula driver and suture anchor kit | |
| CN204274602U (en) | The guider of belt loop Interal fixation in coracoclavicular ligament Reconstruction | |
| CN201341905Y (en) | A thoracic cavity closes draught tube implanting stretching pliers | |
| CN201453370U (en) | extractor for various interlocking intramedullary nails | |
| CN103654937B (en) | Combined probe sleeve | |
| CN104161549B (en) | Human-body safety biopsy crochet hook | |
| CN204410948U (en) | For the fixing tail cap of closed intramedullary pin centre bore tail end | |
| CN102274071A (en) | Intramedullary nail extractor | |
| ITVR20080067A1 (en) | DEVICE FOR SURGICAL USE | |
| CN204336997U (en) | A kind of extraction apparatus for head of femur | |
| CN202537626U (en) | Broken handle extractor | |
| CN204106176U (en) | Metacarpal fracture micro hollow compress intramedullary nail | |
| CN208176567U (en) | Medical muscles and bones needle | |
| CN202932995U (en) | Cervical vertebra body positioner | |
| JP2015512311A5 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150429 Termination date: 20170821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |