CN109793566A - A kind of device for fetching nail of the anti-return of orthopaedics - Google Patents
A kind of device for fetching nail of the anti-return of orthopaedics Download PDFInfo
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- CN109793566A CN109793566A CN201910026722.7A CN201910026722A CN109793566A CN 109793566 A CN109793566 A CN 109793566A CN 201910026722 A CN201910026722 A CN 201910026722A CN 109793566 A CN109793566 A CN 109793566A
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- section
- sleeve
- nail
- inner prop
- guide rail
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- Surgical Instruments (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention discloses a kind of orthopaedics device for fetching nail of anti-return, including inner prop and sleeve, the inner prop is sleeved on sleeve inner, the inner prop successively includes limit section under upper, locking section, guide rail section and take nail section, the limit section is step limit body, and limit section lower end diameter is less than upper end diameter, the diameter of the locking section is less than the guide rail section of lower end and takes nail section, the sleeve is the rounded cylindrical structure of upper end closed, and towing pad is arranged in sleeve upper end, the trend of the towing pad and the axis of sleeve are vertical, the sleeve inner sets gradually cushion chamber and rail cavity under upper, the limit section and locking section of the inner prop are in inside cushion chamber, the device for fetching nail of the anti-return of this orthopaedics is acted on by steel ball and extruded wall, inner prop and sleeve are locked, realize the unidirectional traction of inner prop and sleeve, effectively avoid moving back, Reduce the sense of discomfort taken during nail.
Description
Technical field
The present invention relates to the field of medical instrument technology, the device for fetching nail of specially a kind of anti-return of orthopaedics.
Background technique
It the use of steel nail and Interal fixation fracture site is common operation method, steel in existing operation in fracture operation
Nail implantation human body also needs to take out for a period of time afterwards.In taking steel nail operation, due to there is meeting and people in people's body in steel nail for a long time
Body bone is connected, and increases very big difficulty to doctor when taking out, and most device for fetching nail are generally adopted manually,
Therefore during taking nail, due to the unreasonable structural design of partial devices, often there is a situation where taking nail to move back, to trouble
Person brings sense of discomfort.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of orthopaedics and is bound with taking for anti-return
It sets, is acted on by steel ball and extruded wall, inner prop and sleeve are locked, realize the unidirectional traction of inner prop and sleeve, effectively avoid back
It moves, reduces the sense of discomfort taken during nail, can effectively solve the problems in background technique.
To achieve the above object, the invention provides the following technical scheme: a kind of device for fetching nail of the anti-return of orthopaedics, including
Inner prop and sleeve, the inner prop are sleeved on sleeve inner, and the inner prop successively includes limit section, locking section, guide rail under upper
Section and take nail section, the limit section is step limit body, and limits section lower end diameter less than upper end diameter, the locking section
Diameter is less than the guide rail section of lower end and takes nail section；
The sleeve is the rounded cylindrical structure of upper end closed, and towing pad is arranged in sleeve upper end, and the towing pad is walked
To vertical with the axis of sleeve, the sleeve inner sets gradually cushion chamber and rail cavity, the limit of the inner prop under upper
Section and locking section are in inside cushion chamber, and guide rail section is coupled with rail cavity, and setting is squeezed inside the cushion chamber of the sleeve
Wall is pressed, lower end and the cushion chamber lower end of the extruded wall are fixed, and steel ball is arranged between the extruded wall and the locking section of inner prop.
As a preferred technical solution of the present invention, three steel balls, the steel ball are uniformly arranged outside the locking section
It is connect by spring two with the lower end step surface of limit section, the axis of the spring two is Chong Die with the axis of inner prop.
As a preferred technical solution of the present invention, the inner surface of the extruded wall is circular conical surface, and under circular conical surface
Diameter is held to be less than upper end, and spring one is arranged in the external of extruded wall, the lower end of the spring one and the bottom of cushion chamber connect, institute
The upper end for stating spring one is connect with the upper end step face of limit section, and the axis of the spring one is Chong Die with sleeve axis.
As a preferred technical solution of the present invention, the guide rail section is " ten " font guide rail, and the section of rail cavity
It is identical as guide rail section, and guide rail section is slidably installed with rail cavity, and the cabling of guide rail section is Chong Die with the axis of inner prop.
As a preferred technical solution of the present invention, the inside setting for taking nail section takes nail cavity, described to take the nail cavity to be
Pyramidal structure, and the diameter of open end is less than the other end, and takes and limited step is arranged among nail cavity, and the side wall of nail cavity is taken to be arranged
Strip gab, and external screw thread is arranged outside nail section in strip gab corresponding take, and locking screw is coupled outside male thread portion
It is female.
Compared with prior art, the beneficial effects of the present invention are: the device for fetching nail of the anti-return of this orthopaedics by steel ball with
Extruded wall acts on, and when inner prop is mutually drawn with sleeve, can lock inner prop and sleeve, realizes that inner prop and the unidirectional of sleeve be led
Draw, when the two is mutually shunk, steel ball return is detached from inner prop and sleeve, even if sleeve moves back, inner prop will not be caused to return
It moves, effectively steel nail is avoided to move back, and when sleeve return, spring one can under spring force, continuous traction inner prop, mechanical
Tractive force is made up, tractive force is avoided to take off power suddenly.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structure of the invention cross-sectional view；
Fig. 3 is inner prop schematic diagram of the present invention；
Fig. 4 is cross-sectional view at A of the present invention.
In figure: 1 inner prop, 2 sleeves, 3 towing pads, 4 springs one, 5 steel balls, 6 locking nuts, 7 guide rail sections, 8 locking sections, 9 limits
Position section, 10 take nail section, 11 extruded walls, 12 springs two, 13 to take nail cavity.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of device for fetching nail of the anti-return of orthopaedics, including it is interior
Column 1 and sleeve 2, inner prop 1 are sleeved on inside sleeve 2, and inner prop 1 successively includes limit section 9, locking section 8, guide rail section 7 under upper
Section 10 is followed closely with taking, limit section 9 is step limit body, and limits 9 lower end diameter of section and be less than upper end diameter, the diameter of locking section 8
Less than lower end guide rail section 7 and take nail section 10；
Sleeve 2 be upper end closed rounded cylindrical structure, and 2 upper end of sleeve be arranged towing pad 3, the trend of towing pad 3 with
The axis of sleeve 2 is vertical, sets gradually cushion chamber and rail cavity, the limit section 9 and locking of inner prop 1 inside sleeve 2 under upper
Section 8 is inside cushion chamber, and guide rail section 7 is coupled with rail cavity, and extruded wall 11 is arranged inside the cushion chamber of sleeve 2, squeezes
The lower end of pressure wall 11 is fixed with cushion chamber lower end, and steel ball 5 is arranged between the locking section 8 of extruded wall 11 and inner prop 1.
Three steel balls 5 are uniformly arranged outside locking section 8, steel ball 5 is connected by the lower end step surface of spring 2 12 and limit section 9
It connects, guarantees that steel ball 5 can contact always with extruded wall 11 and the locking section of inner prop 18, the axis of spring 2 12 and the axis of inner prop 1
Line overlap；
The inner surface of extruded wall 11 is circular conical surface, by being gradually reduced for 11 inside diameter of extruded wall, to increase steel ball 5
With the frictional force between locking section 8, so that inner prop 1 and the position of sleeve 2 be fixed, and the lower end diameter of circular conical surface be less than it is upper
End, and spring 1 is arranged in the external of extruded wall 11, the lower end of spring 1 and the bottom of cushion chamber connect, the upper end of spring 1
It is connect with the upper end step face of limit section 9, the axis of spring 1 is Chong Die with 2 axis of sleeve；
Guide rail section 7 is " ten " font guide rail, and the section of rail cavity is identical as guide rail section 7, and guide rail section 7 and rail cavity are sliding
Dynamic installation, and the cabling of guide rail section 7 is Chong Die with the axis of inner prop 1, is designed by the structure of " ten " font, effectively avoids inner prop 1
It relatively rotates with sleeve 2, guarantees the stability for taking nail process；
The inside setting of nail section 10 is taken to take nail cavity 13, taking nail cavity 13 is pyramidal structure, and the diameter of open end is less than another
End, and take and limited step is set among nail cavity 13, the orthopaedics suitable for end with position limiting structure is followed closely, and takes the side wall of nail cavity 13
Strip gab is set, and external screw thread is arranged outside nail section 10 in strip gab corresponding take, and is coupled outside male thread portion
Locking nut 6 is acted on by locking nut 6, and with the conical surface inside conjunction nail cavity 13, so that orthopaedics be followed closely and take 10 jail of nail section
Gu fixed.
When in use: orthopaedics being nailed on into end insertion, nail section 10 is taken to take inside nail cavity 13, be rotated down locking nut 6, make
Orthopaedics is followed closely to be fixedly connected with nail section 10 is taken, and is then connect the towing pad 3 of 2 upper end of sleeve with external traction device, is drawn,
In traction, 2 relative motion of inner prop 1 and sleeve makes overall elongated, when inner prop 1 is mobile, drives steel ball 5 to move, makes steel ball 5
It moves down, under the action of extruded wall 11,5 present position of steel ball is gradually reduced, to make to generate the biggish friction of inner prop 1
Power, to keep inner prop 1 and sleeve 2 fixed, so that positive traction is realized, when external traction device loses power, inner prop 1 and sleeve 2
When relative constriction, steel ball 5 is mobile to the back-end under the drive of inner prop 1, to be detached from sleeve, the inner prop 1 made divides with sleeve 2
From, while under the action of spring 1, guarantee that inner prop 1 is persistently pulled power, and tractive force with spring 1 elongation gradually
Reduce, inner prop 1 avoided to move back, and make tractive force to unload power process steady, avoid unloading sense of discomfort caused by power suddenly.
The present invention is acted on by steel ball 5 and extruded wall 11, when inner prop 1 and sleeve 2 are mutually drawn, can by inner prop 1 with
Sleeve 2 is locked, and realizes the unidirectional traction of inner prop 1 and sleeve 2, and when the two is mutually shunk, steel ball 5 is moved back, and makes inner prop 1 and sleeve
2 are detached from, even if sleeve 2 moves back, inner prop 1 will not be caused to move back, effectively steel nail is avoided to move back, and when the return of sleeve 2, spring
One 4 can under spring force, and continuous traction inner prop 1, machinery makes up tractive force, and tractive force is avoided to take off power suddenly.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of orthopaedics device for fetching nail of anti-return, including inner prop (1) and sleeve (2), it is characterised in that: the inner prop (1)
It is internal to be sleeved on sleeve (2), the inner prop (1) successively include under upper limit section (9), locking section (8), guide rail section (7) and
Nail section (10) is taken, the limit section (9) is step limit body, and limits section (9) lower end diameter and be less than upper end diameter, the lock
The diameter of tight section (8) is less than the guide rail section (7) of lower end and takes nail section (10)；
The sleeve (2) is the rounded cylindrical structure of upper end closed, and towing pad (3) are arranged in sleeve (2) upper end, the towing pad
(3) trend is vertical with the axis of sleeve (2), and the sleeve (2) is internal to set gradually cushion chamber and rail cavity under upper, institute
The limit section (9) and locking section (8) for stating inner prop (1) are in inside cushion chamber, and guide rail section (7) is coupled with rail cavity, institute
It states and extruded wall (11) is set inside the cushion chamber of sleeve (2), the lower end of the extruded wall (11) is fixed with cushion chamber lower end, described
Steel ball (5) are set between extruded wall (11) and the locking section (8) of inner prop (1).
2. a kind of device for fetching nail of the anti-return of orthopaedics according to claim 1, it is characterised in that: the locking section (8)
Outside is uniformly arranged three steel balls (5), and the steel ball (5) is connect by spring two (12) with the lower end step surface for limiting section (9),
The axis of the spring two (12) is Chong Die with the axis of inner prop (1).
3. a kind of device for fetching nail of the anti-return of orthopaedics according to claim 1, it is characterised in that: the extruded wall (11)
Inner surface be circular conical surface, and the lower end diameter of circular conical surface is less than upper end, and spring one (4) are arranged in the external of extruded wall (11),
The lower end of the spring one (4) and the bottom of cushion chamber connect, the upper end of the spring one (4) and the upper end stand of limit section (9)
Terrace connection, the axis of the spring one (4) are Chong Die with sleeve (2) axis.
4. a kind of device for fetching nail of the anti-return of orthopaedics according to claim 1, it is characterised in that: the guide rail section (7)
For " ten " font guide rail, and the section of rail cavity is identical as guide rail section (7), and guide rail section (7) is slidably installed with rail cavity, and leads
The cabling of rail section (7) is Chong Die with the axis of inner prop (1).
5. a kind of device for fetching nail of the anti-return of orthopaedics according to claim 1, it is characterised in that: described to take nail section (10)
Inside setting take nail cavity (13), described to take nail cavity (13) be pyramidal structure, and the diameter of open end is less than the other end, and takes nail
Limited step is set among chamber (13), and takes the side wall of nail cavity (13) that strip gab is set, and strip gab is corresponding takes nail section
(10) external that external screw thread is set, and locking nut (6) are coupled outside male thread portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910026722.7A CN109793566B (en) | 2019-01-11 | 2019-01-11 | Orthopedic nail taking device capable of preventing back movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910026722.7A CN109793566B (en) | 2019-01-11 | 2019-01-11 | Orthopedic nail taking device capable of preventing back movement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109793566A true CN109793566A (en) | 2019-05-24 |
| CN109793566B CN109793566B (en) | 2020-08-25 |
Family
ID=66557088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910026722.7A Expired - Fee Related CN109793566B (en) | 2019-01-11 | 2019-01-11 | Orthopedic nail taking device capable of preventing back movement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109793566B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520567A (en) * | 2021-08-05 | 2021-10-22 | 河南科技大学第一附属医院 | Nail taking device for orthopedics department |
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| CN208274612U (en) * | 2017-11-22 | 2018-12-25 | 吴昊 | A kind of extractor of orthopedic slipped screws |
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| EP1091700B1 (en) * | 1998-07-02 | 2005-04-27 | Wittenstein AG | Bone distraction device |
| WO2011017066A1 (en) * | 2009-08-04 | 2011-02-10 | Tyco Healthcare Group Lp | Impacting anvil assembly and method for impacting surgical fasteners |
| CN201542737U (en) * | 2009-09-29 | 2010-08-11 | 王卫国 | Screw extraction screwdriver with upper clamping device and lower clamping device for orthopaedics |
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| CN105832400A (en) * | 2016-05-03 | 2016-08-10 | 丽水市人民医院 | Sleeve type orthopedic nail remover |
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| CN106510835A (en) * | 2016-12-27 | 2017-03-22 | 肖园 | Nail taking device for general surgery department |
| CN206785193U (en) * | 2017-05-26 | 2017-12-22 | 张秦鸣 | A kind of damping buffering adhesive structure of door and window |
| CN107582161A (en) * | 2017-08-11 | 2018-01-16 | 有研医疗器械（北京）有限公司 | A kind of memorial alloy C-shaped ring and its take device |
| CN208274612U (en) * | 2017-11-22 | 2018-12-25 | 吴昊 | A kind of extractor of orthopedic slipped screws |
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| CN108662062A (en) * | 2018-06-11 | 2018-10-16 | 何亮 | A kind of damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520567A (en) * | 2021-08-05 | 2021-10-22 | 河南科技大学第一附属医院 | Nail taking device for orthopedics department |
| CN113520567B (en) * | 2021-08-05 | 2022-06-03 | 河南科技大学第一附属医院 | Nail taking device for orthopedics department |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109793566B (en) | 2020-08-25 |
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