CN207979720U - mastoid retractor - Google Patents
mastoid retractor Download PDFInfo
- Publication number
- CN207979720U CN207979720U CN201720661037.8U CN201720661037U CN207979720U CN 207979720 U CN207979720 U CN 207979720U CN 201720661037 U CN201720661037 U CN 201720661037U CN 207979720 U CN207979720 U CN 207979720U
- Authority
- CN
- China
- Prior art keywords
- clamp handle
- connecting rod
- axis
- bar
- backing pin
- 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
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- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
The utility model is related to a kind of medical instruments,More particularly to a kind of mastoid retractor,Including adjustment frame,Connecting seat,First clamp handle,Second clamp handle,First, which struts bar and second, struts bar,It is provided with screw rod in the middle part of adjustment frame,The screw rod other end is connect with connecting seat,Adjustment frame both ends are hinged by axis pin and first connecting rod respectively,The other end of first connecting rod and the middle part of second connecting rod are hinged,First clamp handle and the second clamp handle are separately connected second connecting rod by two axis pins,One end of third connecting rod,Second connecting rod,The other end of third connecting rod is respectively hinged at the both sides of connecting seat,First clamp handle and the second clamp handle tail portion are both provided with backing pin,Backing pin is fixed on backing pin connecting rod,Backing pin connecting rod is hinged with the first clamp handle or the second clamp handle respectively,It is provided with torsional spring between backing pin connecting rod and the first clamp handle or the second clamp handle,First, which struts bar and second, struts and is respectively fixed with axis on bar,Straight-tooth ratchet is fixed on axis,The other end of axis and the first clamp handle or the second clamp handle are rotatablely connected.
Description
Technical field
The utility model is related to a kind of medical instruments, and in particular to a kind of mastoid retractor.
Background technology
Mastoid retractor is common a kind of instrument in operation, and in aural microsurgery, mastoidea is soft after making traction ear
Tissue is used.The joint part of the mastoid retractor introduced currently on the market, head cannot be bent, cause angled at some be
Operation cannot deeply enter in vivo.
Utility model content
The purpose of this utility model is to provide a kind of mastoid retractor for being convenient for adjusting suitable angle during operation.
The purpose of this utility model is realized in the following manner：Mastoid retractor, including adjustment frame, connecting seat, first
Clamp handle, the second clamp handle, first strut bar and second and strut bar, and screw rod, the screw rod other end and connecting seat are provided in the middle part of adjustment frame
Connection, adjustment frame both ends are hinged by axis pin and first connecting rod respectively, and the other end of first connecting rod passes through axis pin and second connecting rod
Middle part it is hinged, the first clamp handle and the second clamp handle are separately connected one end of second connecting rod, third connecting rod by two axis pins, second
Connecting rod, third connecting rod the other end be respectively hinged at the both sides of connecting seat, the first clamp handle and the second clamp handle tail portion are both provided with gear
Pin, backing pin are fixed on backing pin connecting rod, and backing pin connecting rod is hinged with the first clamp handle or the second clamp handle respectively, backing pin connecting rod and the first pincers
Be provided with torsional spring between handle or the second clamp handle, first, which struts bar and second, struts and is respectively fixed with axis on bar, be fixed on axis with
The straight-tooth ratchet of backing pin cooperation, the other end of axis and the first clamp handle or the second clamp handle are rotatablely connected.
The head that bar is strutted first is set up in parallel 4 the first stays, and the head that bar is strutted second is arranged and 4 first
4 interlaced the second stays of stay.
Gear hoop is provided on the screw rod.
The second connecting rod and third connecting rod are opposite isometric equal arcs bending shapes, between centers line respectively with connecting seat two
The between centers line of side and the first clamp handle and the second clamp handle forms parallelogram.
The utility model has the beneficial effects that：The utility model by by first strut bar and second strut that bar is set as can
Convenient for adjusting suitable angle during operation, straight-tooth ratchet and backing pin pair first strut bar and second and strut bar the movable part of rotation
It is locked, prevent malfunction and simple in structure；Backing pin is arranged in the first clamp handle and the second clamp handle, easy to operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the A-A direction views of Fig. 1.
Specific implementation mode
As shown in Figure 1 and Figure 2, mastoid retractor, including adjustment frame 1, connecting seat 6, the first clamp handle 3, the second clamp handle 15,
One struts bar 16 and second struts bar 12, and 1 middle part of adjustment frame is provided with the screw rod 7 with handle 17,7 other end of screw rod with connect
Seat 6 connects, and 1 both ends of adjustment frame are hinged by axis pin and first connecting rod 2 respectively, and the other end of first connecting rod 2 passes through axis pin and the
The middle part of two connecting rods 4 is hinged, and the first clamp handle 3 and the second clamp handle 15 are separately connected second connecting rod 4, third connecting rod by two axis pins
5 one end, second connecting rod 4, third connecting rod 5 the other end be respectively hinged at the both sides of connecting seat 6, the first clamp handle 3 and second pincers
15 tail portion of handle is both provided with backing pin 9, and backing pin 9 is fixed on backing pin connecting rod 11, backing pin connecting rod 11 respectively with the first clamp handle 3, second
Clamp handle 15 is hinged, is provided with torsional spring 18 between backing pin connecting rod 11 and the first clamp handle 3 or the second clamp handle 15, and first struts bar 16 and the
Two strut and are respectively fixed with axis on bar 12, and the straight-tooth ratchet 10 coordinated with backing pin 9, the other end of axis and the first pincers are fixed on axis
Handle 3 or the rotation connection of the second clamp handle 15, straight-tooth ratchet 10 and backing pin 9 coordinate, and adjust first and strut bar 16 and the first clamp handle 3, the
Two strut the angle between bar 12 and the second clamp handle 15, and the head that bar 16 is strutted first is set up in parallel 4 the first stays 13,
Second struts the head setting of bar 12 and four interlaced the second stays 14 of four the first stays, and gear is provided on screw rod 7
Hoop 8, prevents connecting seat from being slided on screw rod, and second connecting rod 4 and third connecting rod 5 are opposite isometric equal arcs bending shape, between centers
Line forms parallelogram with 6 both sides of connecting seat and the between centers line of the first clamp handle 3 and the second clamp handle 15 respectively.
In use, strutting bar and second by first struts the suitable angle of bar adjusting, two stays catch on mastoid process notch
The skin of both sides, then turns screw rod clockwise, and connecting seat is pushed ahead in the rotation of screw rod so that the screw rod being connected with connecting seat
To second connecting rod, third connecting rod to the parallel expansion in both sides, the first clamp handle and the second clamp handle is driven to collapse or retract, at this point, mastoid process
Portion's skin is opened.
Claims (4)
1. mastoid retractor, including adjustment frame, connecting seat, the first clamp handle, the second clamp handle, first struts bar and second and struts bar,
It is provided with screw rod in the middle part of adjustment frame, the screw rod other end is connect with connecting seat, and adjustment frame both ends pass through axis pin and first connecting rod respectively
Hinged, the other end of first connecting rod is hinged by the middle part of axis pin and second connecting rod, and the first clamp handle and the second clamp handle pass through two
Axis pin is separately connected one end of second connecting rod, third connecting rod, second connecting rod, third connecting rod the other end be respectively hinged at connecting seat
Both sides, it is characterised in that：First clamp handle and the second clamp handle tail portion are both provided with backing pin, and backing pin is fixed on backing pin connecting rod, gear
It is hinged with the first clamp handle or the second clamp handle respectively to sell connecting rod, torsion is provided between backing pin connecting rod and the first clamp handle or the second clamp handle
Spring, first, which struts bar and second, struts and is respectively fixed with axis on bar, is fixed with the straight-tooth ratchet coordinated with backing pin on axis, axis it is another
One end is rotatablely connected with the first clamp handle or the second clamp handle.
2. mastoid retractor according to claim 1, it is characterised in that：The head that bar is strutted first is set up in parallel 4
First stay, the head setting for strutting bar second and 4 interlaced the second stays of 4 the first stays.
3. mastoid retractor according to claim 1, it is characterised in that：Gear hoop is provided on the screw rod.
4. mastoid retractor according to claim 1, it is characterised in that：The second connecting rod and third connecting rod are opposite
Isometric equal arcs bending shape, between centers line of the between centers line respectively with connecting seat both sides and the first clamp handle and the second clamp handle formed
Parallelogram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661037.8U CN207979720U (en) | 2017-06-08 | 2017-06-08 | mastoid retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661037.8U CN207979720U (en) | 2017-06-08 | 2017-06-08 | mastoid retractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207979720U true CN207979720U (en) | 2018-10-19 |
Family
ID=63804107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720661037.8U Expired - Fee Related CN207979720U (en) | 2017-06-08 | 2017-06-08 | mastoid retractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207979720U (en) |
-
2017
- 2017-06-08 CN CN201720661037.8U patent/CN207979720U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20181019 Termination date: 20190608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |