CN208031274U - Fixed jaw and bone anchoring device - Google Patents
Fixed jaw and bone anchoring device Download PDFInfo
- Publication number
- CN208031274U CN208031274U CN201720622521.XU CN201720622521U CN208031274U CN 208031274 U CN208031274 U CN 208031274U CN 201720622521 U CN201720622521 U CN 201720622521U CN 208031274 U CN208031274 U CN 208031274U
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- CN
- China
- Prior art keywords
- fixed jaw
- fixed
- bone
- nosed
- anchoring device
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- 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.)
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Abstract
The utility model is related to a kind of fixed jaw, it is used in the bone anchoring device with fixed jaw connecting rod, the fixed jaw (11) includes:Curved portion (112) has the first end (1120) and the second end opposite with the first end (1121) of the fixed jaw connecting rod for being connected to the bone anchoring device;Nosed (111) is connected with the second end (1121) of the curved portion (112);Wherein using the geometric center for being held section of bone to be fixed (90) as origin (O), the fixed jaw (11) is more than 180 ° to the angle that the origin (O) opens.Since with nosed, the utility model fixed jaw is easy to be placed into fixed bit;It, can stronger clamping bone (90) to be fixed since entire fixed jaw is major arc.
Description
Technical field
The utility model is related to fixed jaw and its bone anchoring device is used, especially a kind of be used in is fixed temporarily long bone bone
The fixed jaw and its bone anchoring device of folding.
Background technology
In medical practice, grasping and reset to bone are generally required using bone anchoring device, the prior art
CN2708856Y、CN2848149Y、CN201586055U、CN202078380U、 CN203089326U、CN203122608U、
CN203183006U, CN203677346U, CN203777030U, CN204446061U, CN204581507U individually disclose by
The various bone anchoring devices of fixed claw assembly and movable claw assembly and screw drive composition.Although area in other respects
Not, above-mentioned fixed jaw in the prior art is minor arc, that is, using the geometric center of bone to be fixed as the center of circle, these fixed jaws
Central angle is less than 180 °.
It is the attached drawing of CN203777030U with reference to figure 1.When using the bone anchoring device wherein instructed, allow first solid
Determine pawl 2 and catches on bone (not shown) to be fixed above it from below.At this point, bone to be fixed and its adhering tissue such as muscle, fat
And skin etc. is sandwiched between fixed jaw 2 and movable claw 1.Then, by rotating regulation handle 8, movable claw 1 is made to advance downwardly
And withstand bone to be fixed.Similar with other prior arts, fixed jaw in CN 203777030U is single arc-shaped, and
Its central angle is only slightly larger than 90 °, can catch on bone to be fixed in the left side of Fig. 1 and downside both direction.
The above-mentioned fixed jaw of the prior art, although having the advantages that simple in structure, manufacture is easy, its own folder to bone
It is limited to hold ability.If making up clamping using larger movable claw (such as movable claw 1 in increase CN 203777030U)
Ability can be to adhering tissue outside bone such as muscle, fat and skin etc. then during movable claw movement clamps bone to be fixed
Cause larger wound.Therefore, there is guarantee folder for the bone anchoring device for using it in the fixed jaw design of the prior art
It holds ability and reduces the double-barreled question of wound.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of fixed jaw in bone anchoring device, it can
It provides reliably to the holding capability of bone.
In order to achieve the above objectives, the utility model provides a kind of fixed jaw, and it is solid to be used in the bone with fixed jaw connecting rod
Determine in device, the fixed jaw includes:Curved portion has the fixed jaw connecting rod for being connected to the bone anchoring device
First end, and the second end opposite with the first end;Nosed is connected with the second end of the curved portion;Wherein
Using the geometric center for being held section of bone to be fixed as origin O, the fixed jaw is more than the origin O angles opened
180°。
The fixed jaw of the utility model has the following advantages that:It is due to nosed, contributing to that fixed jaw merging is solid
Positioning;Since entire fixed jaw is major arc, the clamping to three directions of bon e formation to be fixed, therefore its own can be provided
Good fixing.
The utility model also provides a kind of bone anchoring device using above-mentioned fixed jaw comprising above-mentioned fixed jaw, and
Arcuate movement pawl, the movable claw are 30 ° to 70 ° to the angle that the origin O opens.Since the size of movable claw is smaller, this
Utility model bone anchoring device is smaller to the damage organized outside bone.
Description of the drawings
The utility model may be better understood in refer to the attached drawing and specification.Component in attached drawing is painted not necessarily to scale
System, purpose, which is only that, illustrates the principles of the present invention.In the accompanying drawings:
Fig. 1 is the attached drawing of prior art bone anchoring device;
Fig. 2 is the fixed jaw according to one embodiment of the utility model;
Fig. 3 is according to the bone anchoring device of one embodiment of the utility model, including fixed jaw associated component and activity
Pawl associated component.
Specific implementation mode
Following explanation is related to the fixed jaw of one embodiment according to the present utility model.As shown in Fig. 2, the fixation
Pawl 11 includes:Curved portion 112 has the fixed jaw connecting rod for being connected to the bone anchoring device (in figure 3 with reference numeral
13 show) first end 1120, and the second end 1121 opposite with the first end;Nosed 111, with the arc
The second end 1121 in portion 112 is connected;Wherein using the geometric center for being held section of bone 90 to be fixed as origin O, the fixation
Pawl 11 is more than 180 ° to the angle that the origin O opens, that is, forms major arc.
Fixed jaw in above-described embodiment, due to nosed, contributing to fixed jaw 11 being placed in fixed bit;By
It is major arc in entire fixed jaw 11, forms the folder of three directions (left and right sides and upside of Fig. 2) to the bone 90 to be fixed
It holds, therefore its own can provide good fixing.
Preferably, the curved portion 112 is 140 ° to 160 ° to the angle that the origin O opens.Curved portion 112 as a result,
Bone 90 to be fixed is withstood from the right side of Fig. 2 and upside.
Preferably, the nosed 111 is 40 ° to 60 ° to the angle that the origin O opens.As a result, inexcessive
In the case of increased in size, nosed 111 can withstand bone 90 to be fixed on the left of Fig. 2.
Preferably, the angle of wedge of the nosed 111 is 5 ° to 15 °, and nosed 111 is made to be easily built into folder
Hold position.
Preferably, when bone 90 to be fixed is femur, the first end 1120 of the curved portion 112 arrives the nosed
The distance of 111 medial surface is 22-35mm.This size can form femur effective clamping.
Preferably, the medial surface of the nosed 111 has miniature protrusion, the outside mask of the nosed 111
There is band portion 113.Miniature protrusion is arranged on medial surface can help nosed more firmly to hold out against bone 90 to be fixed.On the outside
Band portion 113 is arranged on face to help to detach periosteum, muscle stop when nosed 111 is placed in.
Preferably, considering for mechanical strength and manufacturing cost, the curved portion 112 and the nosed 111 are
Integral structure.
With reference to figure 3, the bone anchoring device according to the utility model one embodiment is shown comprising in above-described embodiment
Fixed jaw 11 and arcuate movement pawl 21, the angle that the movable claw 21 opens the origin O be 30 ° to 70 °.Due to
The size of movable claw is smaller, and bone anchoring device according to the present utility model is smaller to the damage organized outside bone.
According to the bone anchoring device of above-described embodiment, using upper convenience, while good fixing effect is provided, to bone outside
The damage of tissue is smaller.
Although having disclosed the various exemplary embodiments of the utility model, those skilled in the art will manage
Solution, without departing from the spirit and scope of the utility model, can make will realize the certain of the utility model
The various changes of advantage and improvement.Those skilled in the art obviously understand, can suitably substitute execution identical function
Other component.It should be noted that can combine with the feature of other accompanying drawings with reference to the feature specifically illustrated, even if
In the case of being not expressly mentioned.
Claims (8)
1. a kind of fixed jaw is used in the bone anchoring device with fixed jaw connecting rod, which is characterized in that the fixed jaw (11)
Including:
Curved portion (112) has the first end (1120) for the fixed jaw connecting rod for being connected to the bone anchoring device, with
And the second end (1121) opposite with the first end;
Nosed (111) is connected with the second end (1121) of the curved portion (112);
Wherein using the geometric center for being held section of bone to be fixed (90) as origin (O), the fixed jaw (11) is to the original
The angle that point (O) opens is more than 180 °.
2. fixed jaw according to claim 1, wherein
The curved portion (112) is 140 ° to 160 ° to the angle that the origin (O) opens.
3. fixed jaw according to claim 2, wherein
The nosed (111) is 40 ° to 60 ° to the angle that the origin (O) opens.
4. fixed jaw according to claim 1, wherein
The angle of wedge of the nosed (111) is 5 ° to 15 °.
5. fixed jaw according to claim 1, wherein
The distance of medial surface of the first end of the curved portion (112) to the nosed (111) is 22-35mm.
6. fixed jaw according to claim 1, wherein
There is the medial surface of the nosed (111) miniature protrusion, the lateral surface of the nosed (111) to have band portion
(113)。
7. fixed jaw according to claim 1, wherein
The curved portion (112) and the nosed (111) are structure as a whole.
8. a kind of bone anchoring device, it is characterised in that
Include the fixed jaw according to any in claim 1-7, and
Arcuate movement pawl, the movable claw are 30 ° to 70 ° to the angle that the origin (O) opens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720622521.XU CN208031274U (en) | 2017-05-31 | 2017-05-31 | Fixed jaw and bone anchoring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720622521.XU CN208031274U (en) | 2017-05-31 | 2017-05-31 | Fixed jaw and bone anchoring device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN208031274U true CN208031274U (en) | 2018-11-02 |
Family
ID=63957667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201720622521.XU Expired - Fee Related CN208031274U (en) | 2017-05-31 | 2017-05-31 | Fixed jaw and bone anchoring device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN208031274U (en) |
-
2017
- 2017-05-31 CN CN201720622521.XU patent/CN208031274U/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20210531 |
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CF01 | Termination of patent right due to non-payment of annual fee |