CN207928372U - Bone anchoring device - Google Patents
Bone anchoring device Download PDFInfo
- Publication number
- CN207928372U CN207928372U CN201720622557.8U CN201720622557U CN207928372U CN 207928372 U CN207928372 U CN 207928372U CN 201720622557 U CN201720622557 U CN 201720622557U CN 207928372 U CN207928372 U CN 207928372U
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- China
- Prior art keywords
- movable claw
- fixed jaw
- connecting rod
- handle
- anchoring device
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Abstract
The utility model discloses a kind of bone anchoring device, including：Fixed jaw (11), using the center for being held section of bone to be fixed (90) as origin (O), fixed jaw is more than 180 ° to origin opening angle, and fixed jaw limits clamping plane；It can be in the movable claw (21) of function digit and initial bit, when in function digit, in clamping plane and bone to be fixed is clipped in the middle by its inner circumferential with fixed jaw inner circumferential；The fixed jaw connecting rod (13) being connect with fixed jaw comprising the through-hole (19) being longitudinally extended along bar；The movable claw connecting rod (23) being connect with movable claw, and the movable claw handle (25) that is connect with movable claw connecting rod, by manipulation activities pawl handle, movable claw connecting rod can be rotated and be moved forward and backward in through-hole；By rotating movable claw handle, so that movable claw around rod is longitudinally rotated, function digit is reached from initial bit.It is organized outside bone due to that need not cut in the depth direction, it is smaller to carry out the pain that fix bone is brought to patient using the bone anchoring device.
Description
Technical field
The utility model is related to bone anchoring devices, especially a kind of temporary fastening device for long bone fracture end.
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、
During CN203183006U, CN203677346U, CN203777030U, CN204446061U, CN204581507U are individually disclosed
Between partly be rod different product.Although different from other respects, there are one common ground for these products tool, that is, its
The movement of movable claw is moved forward or back each along the longitudinal direction of bar.
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 push down in turn
Withstand bone to be fixed.If moving down for movable claw referred to as " pushed away ", release bone to be fixed in contrast it is upward
Movement can referred to as " be drawn ".Therefore, for CN 203777030U and other prior art products mentioned hereinabove,
It is attributed to the bone anchoring device " along bar direction sliding active pawl ".
Using above-mentioned bone anchoring device, bone to be fixed is clamped in order to which movable claw can be advanced, needs to move movable claw
The incisions such as the musculature on route.By taking prior art bone anchoring device in Fig. 1 as an example, in order to allow movable claw 1 can be to moving down
The function digit for clamping bone is moved, needs to cut those between higher initial position and lower effective clip position
Tissue.Such wound is equal to movable claw 1 along the size of the left and right directions of Fig. 1, skin, fat is equal in depth on the width
The summation of fat and muscle thickness.Since the size of wound is larger, the pain of patient is increased.
Utility model content
Movable claw is set to reach functional location in different ways in view of this, the purpose of this utility model is that proposition is a kind of
Bone anchoring device, at least to mitigate the disadvantages mentioned above of the prior art.
To achieve the above object, the utility model provides a kind of bone anchoring device comprising：Fixed jaw, with bone to be fixed
The center (such as geometric center) for being held section be origin O, the angle that the fixed jaw opens the origin (O) is more than
180 °, the fixed jaw limits clamping plane P；It is at the arcuate movement pawl of function digit OP and initial bit IP, when it is in
When function digit, the movable claw is in the clamping plane P and the inner circumferential of the inner circumferential and the fixed jaw of the movable claw
The bone to be fixed is clipped in the middle；The fixed jaw connecting rod being connect with the fixed jaw comprising extend along longitudinal Z of bar
Through-hole；The movable claw connecting rod being connect with the movable claw 21, and the movable claw handle that is connect with the movable claw connecting rod
Hand, by manipulating the movable claw handle, the movable claw connecting rod can be rotated and be moved forward and backward in the circular through hole；
Wherein, by rotating the movable claw handle, so that longitudinal Z of the movable claw around rod is rotated, institute is reached from the initial bit IP
State function digit OP.
When in use, according to the bone to be fixed of patient the case where, wound is smaller caused by movable claw can be first in
Appropriate initial bit.Then, by rotating movable claw connecting rod, movable claw is made to reach function digit, cooperating with fixed jaw will be to be fixed
Bone is clipped in the middle.Compared with the prior art, the utility model bone anchoring device need not in the depth direction be cut on all bones
Tissue, therefore reduce the pain of patient.
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 the plug-type bone anchoring device of the prior art；
Fig. 2 is including the fixed jaw associated component and in initial according to the exploded view of one embodiment of the utility model
Movable claw associated component of position, and fastening reinforcer etc.；
Fig. 3 is also the exploded view of embodiment illustrated in fig. 2, wherein movable claw assembly is in function digit；
Fig. 4 is the constitutional diagram of embodiment illustrated in fig. 2, wherein movable claw assembly is in initial bit；
Fig. 5 is the constitutional diagram of embodiment illustrated in fig. 2, wherein movable claw assembly is in function digit；
Fig. 6 is the matched schematic diagram of groove of the fin and fixed jaw handle of movable claw handle；
Fig. 7 is the constitutional diagram of embodiment illustrated in fig. 2, after movable claw reaches function digit, is lived using fastening reinforcer sinciput
Each component of pawl；And
Fig. 8 is the enlarged drawing of the nosed of fixed jaw.
Specific implementation mode
Following explanation is related to the bone anchoring device of one embodiment according to the present utility model, as shown in Figure 2-5, packet
It includes：Fixed jaw 11, with the center (such as geometric center) for being held section of bone 90 to be fixed for origin O, the fixed jaw 11
180 ° are more than to the angle that the origin O opens, the fixed jaw 11 limits clamping plane P；Be at function digit OP and just
The arcuate movement pawl 21 of beginning position IP, when it is in function digit, the movable claw 21 is in the clamping plane P and described
The bone 90 to be fixed is clamped in the inner circumferential of movable claw 21 and the inner circumferential of the fixed jaw 11；The fixation being connect with the fixed jaw 11
Pawl connecting rod 13 comprising the through-hole 19 extended along longitudinal Z of bar；The movable claw connecting rod being connect with the movable claw 21
23, and the movable claw handle 25 that is connect with the movable claw connecting rod 23, pass through and manipulates the movable claw handle 25, the work
Pawl connecting rod 23 being capable of rotation and back-and-forth motion in the through-hole 19；The innovation of the utility model is, by turning
The movable claw handle 25 is moved, longitudinal Z of 21 around rod of the movable claw is made to rotate, the function digit is reached from the initial bit IP
OP。
Since the movable claw of the utility model is that rotation reaches function digit, the utility model bone anchoring device is used
It need not cut on all bones and organize in the depth direction, considerably reduce the pain of patient, be particularly suitable for completing minimally invasive
Operation.
Since the Gu Shang tissue thickness of different patients is different, the length of fixed jaw connecting rod 13 is 8-20cm.Length can be used
Adjustable sleeve is spent to make fixed jaw connecting rod 13 to adapt to different length；A set of component can also be made comprising length
Different multiple components are to be suitable for different patients.In addition, when the fixation for femur, the utility model people of the application pays attention to
The anteroposterior diameter range in upper, middle and lower portion is done between 22-35mm to adult thighbone, while under Chinese's lesser trochanter before and after 5cm femoral shafts
Diameter is 25.59 ± 2.75mm.It will appear elastic deformation under stress in view of metal parts, the utility model people of the application will
The diameter for the substantial circular that the clamping bore of bone anchoring device, i.e. fixed jaw are formed with movable claw, is selected as 20-40mm, average value
For 26mm.In addition, in order to be suitable for plugging into other equipment, the peripheral shape of fixed jaw connecting rod 13 is formed as rectangle.
Preferably, in order to obtain stronger clamping effect, the bone anchoring device of the utility model can also include fastening
Reinforcer 31, in this case, it is the knobs 31 for reinforcing fastening effect using helicitic texture.The knob 31 can be on longitudinal Z
On so that the movable claw connecting rod 23 is moved forward, so that the movable claw 21 is held out against the bone to be fixed 90.
It should be pointed out that movable claw handle 25 has been provided in the utility model bone anchoring device, and pass through behaviour
The movable claw handle 25 is indulged, the movable claw 21 can be held out against on bone 90 to be fixed.Therefore, as described in epimere, tightly
Gu the addition of reinforcer 31 is just for the sake of further strengthening fastening effect, and the necessary condition of non-clamping bone.
In addition, in order to reinforce clamping effect, the inside of fixed jaw 11 and movable claw 21 can form miniature rib or miniature bump,
To improve frictional force.
Preferably, it holds fixed jaw 11 for the ease of user and comes manipulation activities pawl 21, the bone fixation dress of the utility model
It can also includes the fixed jaw handle 15 being connect with fixed jaw connecting rod 13 to set.
As one of the optional shape suitable for manipulation, the movable claw handle 25 of the bone anchoring device of the utility model is
L-shaped handle (tee handle bar etc. can be considered the modification of L-shaped handle) comprising along the part that bar longitudinal direction Z extends and be transversely to the machine direction
The lateral part that Z extends；Meanwhile the fixed jaw handle 15 is U-shaped, includes being erected close to the first of the fixed jaw connecting rod 13
Straight section 156, the second vertical section 158 far from the fixed jaw connecting rod 13, and connection first vertical section and second are erected
The bottom section parallel with bar longitudinal direction Z of straight section.The bottom section has recess 151.With reference to figure 5, when movable claw 21 is in initial bit IP
When, the recess 151 can accommodate the lateral part of the L-shaped handle 25.
Movable claw handle 25 is accommodated by providing recess 151 in the bottom of fixed jaw handle 15 section, can allow movable claw handle
Hand 25 is in preparation state appropriate.With reference to figure 4, when movable claw handle 25 is accommodated in recess 151, movable claw 21 is in
The special angle of longitudinal Z of around rod and specific front and back position.Before being detached from recess 151, movable claw handle 25 can not be along the vertical of bar
It is moved forward and backward to Z, can not also carry out reversed around rod movement.
With reference to figure 5 and Fig. 6, it is preferable that the bone anchoring device of the utility model also provides anti-after a kind of arrival function digit
Tumbler, wherein the movable claw handle 25 has Z extensions along longitudinal direction close to one end of the movable claw connecting rod 23
Fin 253；First vertical section 156 of the fixed jaw handle 15 of the U-shaped is the tubular of Z extensions along longitudinal direction, and with Z along longitudinal direction
The groove 153 of extension；Wherein after the movable claw 21 reaches the function digit OP, the fin 251 and the groove 151 are right
It is accurate.Fin 253 can be pushed into groove 153 as a result, and prevent movable claw 21 from carelessly being rotated.In addition, with reference to corresponding to
Fig. 4 of initial bit IP, when the movable claw 21 is in the initial bit IP, due to 253 corresponding position of fin and non-groove
153, therefore, movable claw connecting rod 23 will not be pushed away accidentally and close bone.As shown in Figure 6, it is preferable that convex for the simplicity of processing
The cross section of rib and groove is rectangle.In addition, as available size, the length of fin 253 is 10-30mm, the length of groove 153
Degree is 40-100mm.
It should be pointed out that anti-rotation device can also be formed by means of the movable claw handle 25.Such as it can be
The appropriate location of fixed jaw connecting rod 13 forms the notch extended along longitudinal Z of bar, when movable claw handle 25 reaches the notch position
When setting (movable claw 21 reaches function digit at this time), movable claw handle 25 can not be rotated into notch further around longitudinal Z of bar.
Alternatively, it is also possible to only with label come the arrival of prompt facility position.It can be arranged only at fin 253 and groove 153
Label, to show to reach function digit.
Preferably, the second vertical section 158 of the U-shaped fixed jaw handle 15 of the bone anchoring device of the utility model is along longitudinal direction
Z extends tubular, and has screw thread；The fastening reinforcer 31 has matched with the screw thread of second vertical section 158
Bolt portion so that the fastening reinforcer 31 is threadedly coupled with the fixed jaw handle 15 formation.Movable claw handle 25 can be straight
It connects and is withstood by the fastening reinforcer 31, or may include that widened round plate docks the fastening reinforcer with more large area
31.Fastening reinforcer 31 can rotate and so that fixed jaw handle 15 is generated with movable claw handle 25 and move toward one another, finally make as a result,
Fixed jaw 11 and movable claw 21 clamp bone 90 to be fixed securely.
Preferably, it in the case where the surrounding tissue of bone to be fixed is substantially intact, in order to make wound minimize, and selects intentionally
Select the initial bit that specific position is movable claw 21.Specifically, the bone anchoring device of the utility model, wherein when in described first
When beginning position IP, the movable claw 21 is in the clamping plane P and adjacent with the fixed jaw 11.As shown in this example, movable
It is, for example, less than the 1/4 or even 1/8 of the perimeter of bone 90 to be fixed when 21 size of pawl may be significantly less than fixed jaw 11.Movable claw as a result,
21 can follow fixed jaw 11 to be cut near bone 90 to be fixed, be nearly free from additional destruction.
Fig. 2 and Fig. 3 are compared, and Fig. 4 and Fig. 5 are compared, it can be seen that the initial bit IP in this example and function
Position OP differs 180 degree.Therefore, initial bit IP can be set as to 0 degree ± 10 degree in practice, function digit OP is set as 180 degree
± 10 degree.
It should be pointed out that if the specific adjacent parts of bone to be fixed 90 are had lost thereon by grievous injury
It organizes outside bone or its original anatomical structure is organized less outside bone at this, then movable claw 21 may be provided at the injury region or bone
The outer less place of tissue, from the position, non-default initial bit IP goes to function digit OP.
With reference to figure 7, after movable claw 21 reaches function digit, fastening 31 sinciput movable claw handle 25 of reinforcer, activity are used
Pawl connector 23 finally tightly withstands on movable claw 21 on bone 90 to be fixed.
With reference to figure 8, it is preferable that the fixed jaw 11 in the bone anchoring device of the utility model includes nosed 111, described
The peripheral side of nosed 111 has band portion 113.When the fixed jaw 11 is cut near patient's bone to be fixed, wedge-shaped shape
Shape is conducive to reduce the resistance of incision, and band portion 113 then contributes to detach periosteum and muscle stop.Preferably, this practicality is new
The fixed jaw 11 of type is formed as one.
Preferably, the fixed jaw connecting rod 13 in the bone anchoring device of the utility model is separated with Z along longitudinal direction
Hole.The interval can be 0.8-1.2cm, for helping drainage fluid.
With reference to figure 2, considered for manufacturing cost and assembling difficulty, it is described in the bone anchoring device of the utility model
Movable claw 21 is by bolt or is threadedly coupled to the movable claw connecting rod 23, the movable claw connecting rod 23 and the movable claw
Handle 25 is integrally formed.As a result, by being inserted into the through-hole of fixed jaw connecting rod 13, movable claw connecting rod 23 and movable claw handle
Hand 25 can be rapidly assembled into fixed jaw connecting rod 13.And then movable claw 21 is connected to movable claw connecting rod 23.
With reference to figure 2, considered for manufacturing cost and mechanical performance, in the bone anchoring device of the utility model, institute
It states fixed jaw 11 and the fixed jaw connecting rod 13 and the U-shaped handle 15 is integrally formed.
Finally, as the modification of the previous examples of specification, circular through hole can be formed in movable claw connecting rod 23, and
The fixed jaw connecting rod 21 rotates in the circular through hole of movable claw connecting rod 23.
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.Moreover, the method for the utility model can be in all softwares using suitable processor instruction
Implement or implements in the hybrid system for realizing identical result using the combination of hardware logic and software logic.Utility model concept
Improvement will be covered by accompanying claims.
Claims (12)
1. a kind of bone anchoring device, including：
Fixed jaw (11), using the center for being held section of bone to be fixed (90) as origin (O), the fixed jaw (11) is to described
The angle that origin (O) opens is more than 180 °, and the fixed jaw (11) limits clamping plane (P)；
It is at function digit (OP) and the arcuate movement pawl (21) of initial bit (IP), when it is in function digit, the activity
Pawl (21) is in the clamping plane (P) and the inner circumferential of the inner circumferential of the movable claw (21) and the fixed jaw (11) is by institute
Bone to be fixed (90) is stated to be clipped in the middle；
The fixed jaw connecting rod (13) being connect with the fixed jaw (11) comprising the circle extended along the longitudinal direction (Z) of bar is logical
Hole (19)；
The movable claw connecting rod (23) being connect with the movable claw (21), and the work that is connect with the movable claw connecting rod (23)
Pawl handle (25), by manipulating the movable claw handle (25), the movable claw connecting rod (23) can be described round logical
Rotation and back-and-forth motion in hole (19)；
It is characterized in that, by rotating the movable claw handle (25), the longitudinal direction (Z) of the movable claw (21) around rod is made to rotate,
The function digit (OP) is reached from the initial bit (IP).
2. bone anchoring device according to claim 1, further includes
Reinforcer (31) is fastened, the movable claw connecting rod (23) can be made to move forward on longitudinal direction (Z), make the movable claw
(21) bone to be fixed (90) is held out against.
3. bone anchoring device according to claim 2, further includes
The fixed jaw handle (15) being connect with fixed jaw connecting rod (13).
4. bone anchoring device according to claim 3, wherein
The movable claw handle (25) is L-shaped handle, has the lateral part for being transversely to the machine direction (Z)；
The fixed jaw handle (15) is U-shaped, has the first vertical section close to the fixed jaw connecting rod (13), far from described
Second vertical section of fixed jaw connecting rod (13), and the bottom of the first vertical section of connection and the second vertical section section, the bottom section tool
There are recess (151), the recess (151) that at least part of the lateral part of the L-shaped handle can be accommodated.
5. bone anchoring device according to claim 4, wherein
The movable claw handle (25) has the fin that (Z) extends along longitudinal direction close to one end of the movable claw connecting rod (23)
(253)；
First vertical section of the fixed jaw handle (15) of the U-shaped is the tubular of (Z) extension along longitudinal direction, and with along longitudinal direction
(Z) groove (153) extended；
Wherein when the movable claw (21) is in the function digit (OP), the fin (253) and the groove (153) are right
It is accurate.
6. bone anchoring device according to claim 4, wherein
Second vertical section of the fixed jaw handle (15) of the U-shaped is the tubular of (Z) extension along longitudinal direction, and has screw thread；
The fastening reinforcer (31) has screw thread corresponding with the second vertical section screw thread so that the fastening reinforcer
(31) it is formed and is threadedly coupled with the fixed jaw handle (15).
7. bone anchoring device according to claim 1 or 2, wherein when in the initial bit (IP), the movable claw
(21) it is in the clamping plane (P) and adjacent with the fixed jaw (11).
8. bone anchoring device according to claim 1 or 2, wherein the fixed jaw (11) includes nosed (111), institute
The peripheral side for stating nosed (111) has band portion (113).
9. bone anchoring device according to claim 1 or 2, wherein the fixed jaw connecting rod (13) has along longitudinal direction (Z)
Hole spaced apart.
10. bone anchoring device according to claim 1 or 2, wherein the movable claw (21) passes through bolt or threaded connection
To the movable claw connecting rod (23), the movable claw connecting rod (23) is integrally formed with the movable claw handle (25).
11. bone anchoring device according to claim 1 or 2, wherein the fixed jaw (11) and the fixed jaw connecting rod
(13) and the fixed jaw handle (15) is integrally formed.
12. a kind of bone anchoring device, with bone anchoring device described in claim 1 the difference is that：It is described round logical
Hole is formed in the movable claw connecting rod (23), and the fixed jaw connecting rod (21) can rotate in the circular through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622557.8U CN207928372U (en) | 2017-05-31 | 2017-05-31 | Bone anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622557.8U CN207928372U (en) | 2017-05-31 | 2017-05-31 | Bone anchoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207928372U true CN207928372U (en) | 2018-10-02 |
Family
ID=63644277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720622557.8U Active CN207928372U (en) | 2017-05-31 | 2017-05-31 | Bone anchoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207928372U (en) |
-
2017
- 2017-05-31 CN CN201720622557.8U patent/CN207928372U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20200113 Address after: 100036 Fuxing Road 28, Beijing, Haidian District Co-patentee after: Hu Lei Patentee after: General Hospital of Chinese PLA Address before: 100058 Department of orthopedics, PLA General Hospital, 28 Fuxing Road, Beijing, Haidian District, China Co-patentee before: Hao Ming Patentee before: Tang Peifu Co-patentee before: Zhang Hao Co-patentee before: Hu Lei Co-patentee before: Wang Gun Co-patentee before: Cao Yanxiang |