CN207236884U - A kind of acetabular bone takes out instrument - Google Patents
A kind of acetabular bone takes out instrument Download PDFInfo
- Publication number
- CN207236884U CN207236884U CN201720140211.4U CN201720140211U CN207236884U CN 207236884 U CN207236884 U CN 207236884U CN 201720140211 U CN201720140211 U CN 201720140211U CN 207236884 U CN207236884 U CN 207236884U
- Authority
- CN
- China
- Prior art keywords
- snap ring
- acetabular
- axis
- connecting rod
- stopper
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model belongs to bone surgery set technical field, instrument is taken out more particularly to a kind of acetabular bone, including set axis, snap ring, connecting rod, stopper, connection ring, annular blade, the top for covering axis is set axis handle, it can be connected with motor, set axis bottom is equipped with snap ring, snap ring is equipped with multiple downward lugs, connecting rod one end is sleeved in axis, the other end is thread head, stopper is installed with connecting rod, connection ring is arranged on stopper, and annular blade is flexibly connected through the lug on snap ring with connection ring.The acetabular bone of the utility model takes out instrument, it is simple in structure, it is easy to use, sclerotin can be cut along acetabular component peripheral circular, smoothly take out acetabular component, and acetabular component surrounding fracture will not be caused, at the same time, relatively regular concavity acetabular fossa is formed, only need to slightly polish, just adapt to new acetabular component.
Description
Technical field
The utility model belongs to bone surgery set technical field, and in particular to a kind of acetabular bone takes out instrument.
Background technology
Replacement of Hip Joint is a kind of common modus operandi for old patients with hip fracture or caput femoris necrosis, its
Therapeutic effect is obvious, extensive use.But artificial hip joint is in use for some time, it may occur that abrasion, displacement, loosen etc.
Phenomenon, just needs row Revision after Total Hip Arthroplasty at this time.In Revision after Total Hip Arthroplasty, prosthese takes out always one in the industry
Problem.
At present, it is to be beaten using with the osteotome with arc from acetabular component edge that acetabular component, which takes out, sticks up acetabular bone
Prosthese, time-consuming for such a method, be easy to cause acetabular component surrounding fracture, and after acetabular component takes out, acetabular fossa is usually irregular,
Need to further it polish, or it is serious because fracturing, special plate row acetabulum reconstruction need to be used.Such a method is inconvenient, and time-consuming,
Patient's bleeding is more, or even brings life danger to patient.
Utility model content
For problem present in above-mentioned background technology, the utility model provides a kind of simple in structure, hip easy to use
Mortar takes out instrument.
Its technical solution is：
A kind of acetabular bone takes out instrument, including set axis, snap ring, connecting rod, stopper, connection ring, annular blade, the set axis
Top be set axis handle, can be connected with motor, set axis bottom is equipped with snap ring, and snap ring is equipped with multiple downward lugs, institute
State connecting rod one end to be sleeved in axis, the other end is thread head, and stopper is installed with connecting rod, and the connection ring is arranged on resistance
On block, the annular blade is flexibly connected through the lug on snap ring with connection ring.
Annular blade is flexibly connected with connection ring and passes through the lug on snap ring, so, it can be driven when snap ring moves
Annular blade moves.Set axis drives snap ring rotation when connecing motor work rotation, so as to drive annular blade to do circle with respect to connecting rod
Zhou Yundong；And when pulling down set axis, under the confrontation of stopper, arc saw blade comes closer.Annular blade, connection ring, card
An entirety is connected between ring and set axis（Referred to as acetabular bone is sawed）, acetabular bone saw can do circulatory motion or move downward.
In use, overhauling conventional method abjection joint head prosthesis by artificial hip joint, resin-lined, further taking-up is taken out
The plug of acetabular component bottom, clears up sclerotin, appears screw thread, connecting rod thread head is screwed into from the circular hole of acetabular component bottom, this
When, connecting rod is located on the center of circle that annular blade moves in a circle with respect to connecting rod.Acetabular bone saw is further put into, connects electric drill,
Electric drill drives acetabular bone saw to make annular cutting sclerotin movement, meanwhile, user pushes acetabular bone saw, under the confrontation of stopper, arc
Saw blade is drawn close to acetabular component bottom, and most acetabular component and surrounding sclerotin separate at last, smoothly take out acetabular component.At the same time because of hip
Mortar saw makees regular motion, after acetabular component takes out, will obtain a regular acetabular fossa, slightly polishes, just adapt to new hip
Mortar prosthese.
Further, snap ring is equipped with snap ring fixing piece, and snap ring is connected with set axis by snap ring fixing piece.
For snap ring by snap ring fixing piece and set axis connection, can not only reduce material can also reserve gap observation annular blade
Motion conditions.
Further, the annular blade has more than two.
Cutting effect can be increased with annular blade more, improve and take out acetabular bone efficiency.
Application in other fields, this instrument can dig out the spherical concave surface of rule in other body surfaces, can also obtain
To the convex surface of a sphere.
Beneficial effects of the present invention are：The acetabular bone of the utility model takes out instrument, simple in structure, easy to use, Ke Yiyan
Acetabular component peripheral circular cuts sclerotin, smoothly takes out acetabular component, and will not cause acetabular component surrounding fracture, meanwhile, shape
Into relatively regular concavity acetabular fossa, it only need to slightly polish, just adapt to new acetabular component.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the top view of the utility model；
Wherein, 1- covers axis, 11- set axis handles, 2- snap rings, 21- snap ring fixing pieces, 3- connecting rods, 31- thread heads, 4- resistances
Block, 5- connection rings, 6- annular blades.
Embodiment
Referring to attached drawing, the acetabular bone of the utility model takes out instrument, including set axis 1, snap ring 2, connecting rod 3, stopper 4, company
Ring 5, annular blade 6 are connect, the top of the set axis 1 is set axis handle 11, can be connected with motor, and 1 bottom of set axis is equipped with snap ring
2, snap ring 2 is equipped with multiple downward lugs, and described 3 one end of connecting rod is sleeved in axis 1, and the other end is thread head 31, connection
Stopper 4 is installed with bar 3, the connection ring 5 is arranged on stopper 4, and the annular blade 6 passes through the lug on snap ring 2
It is flexibly connected with connection ring 5.Snap ring 2 is equipped with snap ring fixing piece 21, and snap ring 2 is connected with set axis 1 by snap ring fixing piece 21.Ring
Shape saw blade 6 has more than two.
Claims (3)
1. a kind of acetabular bone takes out instrument, it is characterised in that：Including covering axis（1）, snap ring（2）, connecting rod（3）, stopper（4）, even
Connect ring（5）, annular blade（6）, the set axis（1）Top for set axis handle（11）, can be connected with motor, cover axis（1）Bottom
Portion is equipped with snap ring（2）, snap ring（2）It is equipped with multiple downward lugs, the connecting rod（3）One end is sleeved on set axis（1）It is interior, it is another
Hold as thread head（31）, connecting rod（3）On be installed with stopper（4）, the connection ring（5）It is arranged on stopper（4）On, it is described
Annular blade（6）Through snap ring（2）On lug and connection ring（5）It is flexibly connected.
2. acetabular bone according to claim 1 takes out instrument, it is characterised in that the snap ring（2）It is equipped with snap ring fixing piece
（21）, snap ring（2）With covering axis（1）Pass through snap ring fixing piece（21）Connection.
3. acetabular bone according to claim 1 takes out instrument, it is characterised in that：The annular blade（6）There are more than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140211.4U CN207236884U (en) | 2017-02-16 | 2017-02-16 | A kind of acetabular bone takes out instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140211.4U CN207236884U (en) | 2017-02-16 | 2017-02-16 | A kind of acetabular bone takes out instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207236884U true CN207236884U (en) | 2018-04-17 |
Family
ID=61875161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720140211.4U Expired - Fee Related CN207236884U (en) | 2017-02-16 | 2017-02-16 | A kind of acetabular bone takes out instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207236884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109394396A (en) * | 2018-12-20 | 2019-03-01 | 芜湖锐进医疗设备有限公司 | Acetabular bone extractor |
-
2017
- 2017-02-16 CN CN201720140211.4U patent/CN207236884U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109394396A (en) * | 2018-12-20 | 2019-03-01 | 芜湖锐进医疗设备有限公司 | Acetabular bone extractor |
| CN109394396B (en) * | 2018-12-20 | 2024-02-27 | 芜湖锐进医疗设备有限公司 | Acetabulum extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20220216 |