CN203291020U - Broken nail taking-out machine - Google Patents
Broken nail taking-out machine Download PDFInfo
- Publication number
- CN203291020U CN203291020U CN2013203233856U CN201320323385U CN203291020U CN 203291020 U CN203291020 U CN 203291020U CN 2013203233856 U CN2013203233856 U CN 2013203233856U CN 201320323385 U CN201320323385 U CN 201320323385U CN 203291020 U CN203291020 U CN 203291020U
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- Prior art keywords
- broken nail
- trepan
- taking out
- head
- hollow cavity
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Abstract
The utility model relates to orthopedics department medical apparatuses and instruments, in particular to a broken nail taking-out machine which comprises a trephine head portion with a hollow cavity, a trephine body portion connected with the trephine head portion, and a rotating handle connected with the trephine body portion. The trephine head portion is provided with a saw tooth placed at the end portion and a long-strip-shaped observing hole which is formed in the side face and is communicated with the hollow cavity. The broken nail taking-out machine is characterized in that anticlockwise screwing inner threads with the rotating direction opposite to that of broken nail threads are arranged in the hollow cavity. The broken nail taking-out machine is simple in structure and convenient to use, trauma faces can be reduced, pain of a patient can be lowered, nail taking time can be shortened, and working efficiency can be improved.
Description
Technical field
This utility model relates to the orthopedic medical device technical field, relates in particular a kind of medical bone surgery sclerotin means for taking-out broken nail from inner.
Background technology
The fracture patient trauma care, what often adopt clinically is Breaking screws or plain screw fixation, according to the position of fracture, select different angle, screw, quantity to be fixed, after fracture fixation, patient treated in convalescent period, tended to occur the phenomenon of screw extraction.How taking out the screw of fracture, and reduce again simultaneously the damage to fracture patient as far as possible, is a stubborn problem.
Granted publication number is CN202801780U, the day for announcing is that the Chinese utility model patent on March 20th, 2013 discloses a kind of orthopaedics broken nail withdrawing device, the device that takes out broken nail with the trepan device is disclosed in this patent document, this device is when taking out broken nail, trepan is inserted in the broken nail hole, the rotation trepan, screwing in approximately broken nail length 4/5 place could be with trepan and broken nail locking, thereby broken nail is taken out from bone, this device is screwed into skeleton when getting broken nail deep, otherwise between itself and broken nail, coupling mechanism force just not, can't take out broken nail, spended time is long, large to the skeleton injury, being screwed into broken nail in process becomes flexible and with the trepan reach, damages the place ahead vitals, the risk that can not take out when screw is tight.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art part, provides a kind of simple in structure, easy and simple to handle, reduces the device for taking out broken nail that increases again coupling mechanism force between trepan and broken nail when trepan is screwed into the degree of depth.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows: a kind of device for taking out broken nail, comprise the trepan head with hollow cavity, the trepan body that is connected with described trepan head, the rotary handle that is connected with described trepan body, described trepan head is provided with the sawtooth that is positioned at end and is positioned at side and strip observation port that described hollow cavity communicates, be provided with in described hollow cavity rotation direction with described broken nail screw thread opposite screw counterclockwise female thread.
Device for taking out broken nail of the present utility model, by oppositely screwing mode, with the counterclockwise internal locking screw thread of trepan head and the clockwise threaded engagement of broken nail, make device for taking out broken nail and broken nail quick locking, thereby take out broken nail, screw-in depth is little, whole get the nail process time short, simple to operate, alleviated the misery of fracture patient, reduced the secondary injury to sclerotin.
As preferably, described sawtooth is straight-tooth or inclined teeth.
Sawtooth is that straight-tooth is convenient to processing, and technique is simple, and sawtooth is that inclined teeth is convenient to screw in skeleton fast.
As preferably, described sawtooth is that incline direction and the described internal thread rotation that screws counterclockwise are to identical inclined teeth.
The incline direction of sawtooth and screw counterclockwise internal thread rotation to identical, can make whole trepan head screw in skeleton more fast.
As preferably, the bellmouth of described hollow cavity for away from described sawtooth diameter, diminishing gradually.
The setting of bellmouth can further strengthen the coupling mechanism force of trepan and broken nail so that female thread is taper counterclockwise, avoids there will be the loosening risk of broken nail in taking out the broken nail process.
As preferably, described trepan head and trepan body removably connect.
Trepan head and trepan body removably connect, and the trepan head that can meet the different-diameter size is connected with the trepan body, thereby make ring suitable from the broken nail of different sizes according to head.
As preferably, described trepan head is threaded each other with described trepan body.
The processing that is threaded is more convenient, and technological requirement is not high, long service life.
As preferably, the trepan head is flexibly connected by notch and trepan body.
Flexible connection by notch is realized, directly firmly just can make trepan head and trepan body couple together when connecting, very convenient, is convenient to fast the trepan head be changed, and meets the different needs, and improves adaptability.
As preferably, described trepan body and rotary handle removably connect.
Trepan body and rotary handle are flexibly connected, and the trepan body can be connected with the difform handle such as T shape, circle, hexagon and electric handle.
Compared with prior art, the utility model has the advantage of: simple in structure, easy to use, and be provided with the counterclockwise female thread opposite with the thread rotary orientation of broken nail in trepan head hollow cavity, the degree of depth that the trepan head is screwed in skeleton is very little, be that 4/5 of broken nail length becomes present 1/3 by the former degree of depth, and coupling mechanism force is strong, has greatly reduced and has got the nail time, alleviate in patient's art misery and to the injury of skeleton.
Description of drawings
Below in conjunction with accompanying drawing, this utility model is described further:
Fig. 1 is the schematic perspective view of this utility model one embodiment;
Fig. 2 is the structure chart of Fig. 1.
In figure:
1-trepan head;
11-strip observation port;
The 12-sawtooth;
The 13-hollow cavity;
2-trepan body;
The 3-rotary handle.
The specific embodiment
The following stated is only preferred embodiment of the present utility model, not scope of the present utility model is limited.
Embodiment, see accompanying drawing 1,2, a kind of device for taking out broken nail, comprise the trepan head with hollow cavity, the trepan body that is connected with described trepan head, the rotary handle that is connected with described trepan body, described trepan head is provided with the sawtooth that is positioned at end and is positioned at side and strip observation port that described hollow cavity communicates, in the present embodiment, be provided with in described hollow cavity rotation direction with described broken nail screw thread opposite screw counterclockwise female thread.
In order to make rapidly the trepan head be screwed into broken nail, the sawtooth of trepan apical head is set to incline direction, and screws counterclockwise internal thread rotation when identical in incline direction and trepan head cavity, and it is the quickest that the trepan head screws in broken nail.
For the coupling mechanism force that makes trepan head and broken nail further strengthens, hollow cavity in the trepan head can be set to the bellmouth that diminishes gradually away from trepan head sawtooth diameter, so not only the coupling mechanism force of trepan head and broken nail increases, and can prevent from occurring the loosening risk that breaks away from trepan of broken nail in broken nail taking-up process.
Will be with the taper trepan head of inclined teeth in operation, exert pressure and be enclosed within the broken nail tail end by being rotated counterclockwise, then continue to be rotated counterclockwise to broken nail 1/3 place, the female thread that broken nail tail end screw thread is screwed counterclockwise blocks, then continues to be rotated counterclockwise device for taking out broken nail and just broken nail can be taken out.
Described trepan head and trepan body removably connect, and its connected mode can be to be threaded, and can be also to connect by notch.Trepan head and trepan body adopt the mode that removably connects, and can make in the situation that only replace the trepan head, meet the demand of taking out different-diameter size broken nail, thereby can save cost.
Described trepan body and rotary handle removably connect, and its connected mode can be to be threaded, and can be also to connect by notch.Trepan body and rotary handle adopt the mode that removably connects, and can make the handle that adopts difformity and function when getting the broken nail of different parts, can be T-handle, round handle, hexagon handle, electric handle.
Above explanation is only to explanation of the present utility model, make the complete enforcement this programme of those of ordinary skills' energy, but be not to restriction of the present utility model, those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this description, these are all not creative modifications.But as long as all be subject to the protection of Patent Law in claim scope of the present utility model.
Claims (8)
1. device for taking out broken nail, comprise the trepan head (1) of (13) that has hollow cavity, the trepan body (2) that is connected with described trepan head (1), the rotary handle (3) that is connected with described trepan body (2), described trepan head (1) is provided with the sawtooth (12) that is positioned at end and is positioned at side and strip observation port (11) that described hollow cavity (13) communicates, it is characterized in that: be provided with in described hollow cavity (13) rotation direction with described broken nail screw thread opposite screw counterclockwise female thread.
2. a kind of device for taking out broken nail according to claim 1 is characterized in that: described sawtooth (12) is straight-tooth or inclined teeth.
3. a kind of device for taking out broken nail according to claim 1 is characterized in that: described sawtooth (12) for incline direction and the described internal thread rotation that screws counterclockwise to identical inclined teeth.
4. a kind of device for taking out broken nail according to claim 1, is characterized in that: the bellmouth of described hollow cavity (13) for away from described sawtooth (12) diameter, diminishing gradually.
5. a kind of device for taking out broken nail according to claim 1 is characterized in that: described trepan head (1) removably connects with trepan body (2).
6. a kind of device for taking out broken nail according to claim 5 is characterized in that: described trepan head (1) with described trepan body (2) for being threaded.
7. a kind of device for taking out broken nail according to claim 5 is characterized in that: described trepan head (1) is flexibly connected by notch and trepan body (2).
8. a kind of device for taking out broken nail according to claim 1 is characterized in that: described trepan body (2) removably connects with rotary handle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203233856U CN203291020U (en) | 2013-06-06 | 2013-06-06 | Broken nail taking-out machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203233856U CN203291020U (en) | 2013-06-06 | 2013-06-06 | Broken nail taking-out machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291020U true CN203291020U (en) | 2013-11-20 |
Family
ID=49567069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203233856U Expired - Fee Related CN203291020U (en) | 2013-06-06 | 2013-06-06 | Broken nail taking-out machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203291020U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103750897A (en) * | 2014-01-16 | 2014-04-30 | 青岛华仁技术孵化器有限公司 | Orthopaedic broken screw removing device and using method thereof |
| CN105534564A (en) * | 2016-02-24 | 2016-05-04 | 中南大学湘雅医院 | Marrow cavity bone cement extractor |
| CN112451000A (en) * | 2020-12-18 | 2021-03-09 | 上海市第十人民医院 | Visual bone trepan of getting of screw thread |
-
2013
- 2013-06-06 CN CN2013203233856U patent/CN203291020U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103750897A (en) * | 2014-01-16 | 2014-04-30 | 青岛华仁技术孵化器有限公司 | Orthopaedic broken screw removing device and using method thereof |
| CN103750897B (en) * | 2014-01-16 | 2016-09-07 | 王希强 | Orthopedic broken screw withdrawing device and using method thereof |
| CN105534564A (en) * | 2016-02-24 | 2016-05-04 | 中南大学湘雅医院 | Marrow cavity bone cement extractor |
| CN105534564B (en) * | 2016-02-24 | 2018-08-14 | 中南大学湘雅医院 | Marrow cavity bone cement extractor |
| CN112451000A (en) * | 2020-12-18 | 2021-03-09 | 上海市第十人民医院 | Visual bone trepan of getting of screw thread |
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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: 20131120 Termination date: 20150606 |
|
| EXPY | Termination of patent right or utility model |