CN208784902U - A kind of pedicle of vertebral arch intensification probe - Google Patents
A kind of pedicle of vertebral arch intensification probe Download PDFInfo
- Publication number
- CN208784902U CN208784902U CN201820372815.6U CN201820372815U CN208784902U CN 208784902 U CN208784902 U CN 208784902U CN 201820372815 U CN201820372815 U CN 201820372815U CN 208784902 U CN208784902 U CN 208784902U
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- spherical portion
- pedicle
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- 239000000523 sample Substances 0.000 title claims abstract description 23
- 210000000988 bone and bone Anatomy 0.000 description 7
- 230000001054 cortical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
A kind of pedicle of vertebral arch intensification probe, it includes coaxial handle, tapered rod, bulb, the bulb includes spherical portion and convex and tip part, the tip of the convex and tip part is on the axis of the tapered rod, the convex and tip part is 1.2-1.4 times of the radius of the spherical portion at a distance from the center of circle of the spherical portion, and the radius on the convex and tip part bottom edge is 0.2-0.5 times of the radius of the spherical portion.Pedicle of vertebral arch provided by the utility model deepens probe, and structure is simple, substantially increases channel open circuit operation efficiency by increasing the convex and tip part.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a pedicle of vertebral arch deepens probe for pedicle of vertebral arch screw fixation art.
Background
In pedicle screw fixation, a channel is usually formed by using a channel opener, then a complete set of probes with small and large ball diameters are used for channel opening (for example, the ball diameters can be 1.5mm, 2.5mm, 3.5mm and even 8mm respectively), then tapping is carried out by using a screw tap, and finally, a screw is driven for fixation.
The existing probes generally adopt a structure such as a metal pedicle ball probe provided in chinese patent CN202537646U, that is, the existing probes generally have a structure in which a ball-shaped metal head is provided at the end of a conical rod, so as to avoid the risk of puncturing the cortical bone during the operation.
In medical practice, for young patients with good bone quality, the hardness of cancellous bone is higher and even can approach the hardness of cortical bone of common patients, so that the existing probe (for example, the probe adopting the technical scheme of the chinese patent CN 202537646U) is difficult to smoothly enter the channel formed by the opener only by the hand feeling of the operating doctor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a pedicle of vertebral arch deepens probe to reduce or avoid the aforementioned problem.
In order to solve the technical problem, the utility model provides a pedicle of vertebral arch deepens probe, it includes coaxial handle, conical rod, bulb, the bulb includes spherical portion and protruding point portion, the most advanced of protruding point portion is in on the axis of conical rod, the most advanced of protruding point portion with the distance in the centre of a circle of spherical portion does the radial 1.2-1.4 times of spherical portion, the radius on protruding point portion base does the radial 0.2-0.5 times of spherical portion.
Preferably, the convex tip part is conical, and a generatrix of the convex tip part is a straight line.
Preferably, when the diameter of the spherical portion is 1.5mm, 2.5mm, 3.5mm, the distance between the convex tip portion and the center of the spherical portion is 1.2 times the radius of the spherical portion, and the radius of the bottom edge of the convex tip portion is 0.5 times the radius of the spherical portion.
Preferably, said nose portion is conical, the generatrix of said nose portion is an arc, the radius of said arc having a value within the range of ± 15% of the radius of said spherical portion.
The utility model provides a pedicle of vertebral arch deepens probe, simple structure, through increasing protruding point portion has improved the operating efficiency that opens a way of passageway greatly.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic view of a pedicle deepening probe according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional structural view of the ball head of FIG. 1;
fig. 3 is a schematic diagram of a cross-sectional structural principle of a ball head of an improved embodiment based on fig. 1.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
Fig. 1 is a schematic view of a pedicle deepening probe according to an embodiment of the present invention; FIG. 2 is a schematic cross-sectional structural view of the ball head of FIG. 1; referring to fig. 1 and 2, the present invention provides a pedicle deepening probe, which includes a coaxial handle 1, a conical rod 2, and a ball head 3, wherein the ball head 3 includes a spherical portion 31 and a convex portion 32, the tip of the convex portion 32 is on the axis of the conical rod 2, the distance L1 between the tip of the convex portion 32 and the center of the spherical portion 31 is 1.2-1.4 times the radius R1 of the spherical portion 31, and the radius R1 on the bottom side of the convex portion 32 is 0.2-0.5 times the radius R1 of the spherical portion 31.
As shown in fig. 2, the tip portion 32 may be a conical protrusion, that is, the tip portion 32 may be a conical shape, the generatrix (i.e., the side of the shaft section) of the tip portion 32 is a straight line, the hardness of cancellous bone of a young patient with better bone quality is higher, and even can approach the hardness of cortical bone of a normal patient, the tip portion 32 has a tip with a small height, so that the tip portion can be better secured in the channel, and the axial direction of the ball head 3 coincides with the axial direction of the channel, so that the guide in the channel formed by the router can be easier, and the guide of the ball portion 31 in the channel can be more facilitated.
When the diameter of spherical portion 31 is 1.5mm, 2.5mm, 3.5mm, the distance L1 between apex 32 and the center of the spherical portion 31 can be set to 1.2 times of radius R1 of spherical portion 31, and the radius R1 at the bottom edge of apex 32 can be set to 0.5 times of radius R1 of spherical portion 31, so that the side edge of the axial section of apex 32 has a larger inclination angle and a smaller protrusion, and the strength of apex 32 can be ensured.
Fig. 3 is a schematic diagram of a schematic cross-sectional structure of a ball head according to an improved embodiment based on fig. 1, and referring to fig. 3, a generatrix of the convex tip portion 32' is an arc, and a radius R2 of the arc has a value within a range of ± 15% of a radius R1 of the spherical portion 31, so that an excessively sharp tip of the convex tip portion 32' can be avoided, and a transition surface between the tip and the spherical portion 31 is smooth, so that the tip of the convex tip portion 32' can be prevented from penetrating into a side wall of a channel and causing damage during guiding.
The utility model provides a pedicle of vertebral arch deepens probe can adopt metal material to cast the shaping through the smart technology one shot casting, also can cast out the blank earlier of course, then processes out through the machine mode spherical portion 31 with protruding point portion 32 (32').
The utility model provides a pedicle of vertebral arch deepens probe, simple structure, through increasing protruding point portion has improved the operating efficiency that opens a way of passageway greatly.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (4)
1. The utility model provides a pedicle of vertebral arch deepens probe, its characterized in that, it includes coaxial handle, toper pole, bulb, the bulb includes spherical portion and convex portion, convex portion is a toper arch, convex portion's most advanced is in on the axis of toper pole, convex portion's most advanced with the distance of the centre of a circle of spherical portion is 1.2-1.4 times of the radius of spherical portion, the radius on convex portion base is 0.2-0.5 times of the radius of spherical portion.
2. A pedicle deepening probe according to claim 1, wherein a generatrix of the convex tip portion is a straight line.
3. The pedicle deepening probe according to claim 2, wherein when the diameter of the spherical portion is 1.5mm, 2.5mm, 3.5mm, the distance between the convex portion and the center of the spherical portion is set to be 1.2 times the radius of the spherical portion, and the radius of the bottom side of the convex portion is set to be 0.5 times the radius of the spherical portion.
4. A pedicle deepening probe according to claim 1, characterized in that the generatrix of the convex tip portion is an arc having a radius in the range of ± 15% of the radius of the spherical portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820372815.6U CN208784902U (en) | 2018-03-19 | 2018-03-19 | A kind of pedicle of vertebral arch intensification probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820372815.6U CN208784902U (en) | 2018-03-19 | 2018-03-19 | A kind of pedicle of vertebral arch intensification probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208784902U true CN208784902U (en) | 2019-04-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820372815.6U Expired - Fee Related CN208784902U (en) | 2018-03-19 | 2018-03-19 | A kind of pedicle of vertebral arch intensification probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208784902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112076084A (en) * | 2020-08-21 | 2020-12-15 | 北博(北京)医疗器械有限公司 | Internal heating type electric heating acupuncture needle |
-
2018
- 2018-03-19 CN CN201820372815.6U patent/CN208784902U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112076084A (en) * | 2020-08-21 | 2020-12-15 | 北博(北京)医疗器械有限公司 | Internal heating type electric heating acupuncture needle |
| CN112076084B (en) * | 2020-08-21 | 2022-04-22 | 北博(北京)医疗器械有限公司 | Internal heating type electric heating acupuncture needle |
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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: 20190426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |