CN209789983U - Dynamic screw - Google Patents
Dynamic screw Download PDFInfo
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- CN209789983U CN209789983U CN201821291193.0U CN201821291193U CN209789983U CN 209789983 U CN209789983 U CN 209789983U CN 201821291193 U CN201821291193 U CN 201821291193U CN 209789983 U CN209789983 U CN 209789983U
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- clamping
- spherical
- intermediate body
- accommodating
- universal nail
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Abstract
The utility model relates to a Dynamic screw, which comprises a universal nail, an outer seat and an intermediate body; wherein the spherical portion is connected to an end of the threaded portion; the middle body accommodating part is formed inside the crown part, the end part of the crown part is provided with a plurality of convex parts, and the convex parts are respectively provided with a hook part; two clamping portions are connected with the insertion portion, and the spherical portion accommodating portion is formed inside the insertion portion; the two clamping parts form a clamping space for clamping the fixed rod; the intermediate body is disposed within the intermediate body receiving portion of the outer seat; the spherical part of the universal nail is arranged in the spherical part accommodating part of the insertion part; the spherical part of the universal nail can rotate in the spherical part accommodating part, so that the fixed angle of the universal nail is adjusted; the utility model discloses a Dynamic screw adopts universal nail to adjust fixed angle, and zero moment of torsion is fixed more succinctly, and convenient the regulation is more high-efficient, shorter operation time.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, involve a Dynamic screw for fracture operation.
Background
The traditional nail rod fixing form is shown in figure 1, the structure is complex, the fixing is tedious, and the operation time is long; the fixed rod is provided with a contour, the incisional trace is high, and the fixed rod needs to be broken, so that burrs can damage tissues.
SUMMERY OF THE UTILITY MODEL
in view of the above-mentioned defects of the prior art, the present invention aims to provide a Dynamic screw which has a simple structure and is convenient and quick to disassemble.
The purpose of the utility model is realized through the following technical scheme:
A Dynamic screw comprises a universal nail, an outer seat and a middle body; wherein the universal nail comprises a threaded portion, a spherical portion; the spherical part is connected to the end part of the threaded part;
the outer seat includes a crown portion, a middle body accommodating portion, and a plurality of boss portions; the middle body accommodating part is formed inside the crown part, the end part of the crown part is provided with a plurality of convex parts, and the convex parts are respectively provided with a hook part;
The middle body comprises an insertion part, a spherical part accommodating part and two clamping parts; two clamping portions are connected with the insertion portion, and the spherical portion accommodating portion is formed inside the insertion portion; the two clamping parts form a clamping space for clamping the fixed rod;
the intermediate body is disposed within the intermediate body receiving portion of the outer seat; the spherical part of the universal nail is arranged in the spherical part accommodating part of the insertion part; the ball part of the universal nail can rotate in the ball part accommodating part, so that the fixed angle of the universal nail is adjusted.
further, the outer circumferential surface of the insertion portion is provided with a plurality of first slits and a plurality of second slits along the axial direction; the first gap starts from the other end of the insertion part, which is opposite to the end connected with the clamping part, extends along the axial direction and does not extend to the end connected with the clamping part of the insertion part; the second slit starts from one end of the insertion portion connected to the clamping portion and extends in the axial direction without extending to the other end of the insertion portion opposite to the one end connected to the clamping portion.
Further, the second gap has two, and with the centre gripping space intercommunication.
Furthermore, the nail feeding points of the two universal nails form an angle A.
Further, the angle a is preferably acute.
compared with the prior art, the utility model discloses a characteristics and progress as follows:
1. the utility model discloses a Dynamic screw adopts universal nail to adjust fixed angle, and zero moment of torsion is fixed more succinctly, and convenient the regulation is more high-efficient, shorter operation time.
2. The utility model discloses a do not have any profile on the dead lever, the monomer accomplishes ultralow notch, need not the rupture, so do not have broken back burr damage tissue problem.
3. The utility model discloses a Dynamic screw revolutionary design lets the system have Dynamic correction's ability, satisfies quick dismantlement simultaneously.
4. The utility model discloses a Dynamic screw can be segmented or the dislocation of full vertebra realizes axial plane and rectifies, and complicated orthopedic operation is solved in the adaptation, and the compatible traditional fracture operation of solving of cooperation staple is.
Drawings
FIG. 1: a schematic diagram of a traditional nail rod fixing form;
FIG. 2: the utility model is a schematic view of the fixing form of the nail rod;
FIG. 3: the structure diagram of the Dynamic screw of the utility model;
FIG. 4: the utility model discloses advance the nail point sketch map.
Detailed Description
the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 2-3, a Dynamic screw 2 comprises a universal nail 21, an outer seat 22, and an intermediate body 23; wherein the universal nail 21 comprises a threaded portion 211, a spherical portion 212; a spherical portion 212 is connected to an end of the threaded portion 211;
The outer holder 22 includes a crown portion 221, an intermediate body accommodating portion 222, and a plurality of projection portions 223; the accommodating part 222 is formed inside the crown part 221, the plurality of convex parts 223 are provided at the end of the crown part 221, and the plurality of convex parts 223 are respectively provided with the hook parts 224;
The intermediate body 23 includes an insertion portion 231, a spherical portion accommodating portion 235, and two clamping portions 232; the clamping portion 232 is connected to the insertion portion 231, and the spherical portion accommodating portion 235 is formed inside the insertion portion 231; the two clamping parts 232 form a clamping space for clamping the fixing rod 1;
the intermediate body 23 is disposed in the intermediate body accommodating portion 222 of the outer holder 22; the spherical portion 212 of the universal nail 21 is disposed in the spherical portion accommodating portion 235 of the insertion portion 231; the ball portion 212 of the universal nail 21 can rotate in the ball portion receiving portion 235, thereby adjusting the fixed angle of the universal nail 21. The universal nail 21 is adopted to adjust the fixed angle, the torque is zero, the fixation is simpler, the adjustment is convenient, the efficiency is higher, and the operation time is shorter; the revolutionary design of the Dynamic screw enables the system to have Dynamic correction capability and meet the requirement of quick disassembly.
By adopting a Dynamic screw, no profile is arranged on the fixing rod 1, and the monomer has ultra-low notch without being broken, so that the problem that the broken burr damages the tissue does not exist.
The outer circumferential surface of the insertion portion 231 is provided with a plurality of first slits 233 and a plurality of second slits 234 in the axial direction; the first slit 233 starts from the other end of the insertion portion 231 opposite to the end connected to the holding portion 232 and extends in the axial direction without extending to the end of the insertion portion 231 connected to the holding portion 232; the second slit 234 starts from one end of the insertion portion 231 connected to the holding portion 232 and extends in the axial direction, not extending to the other end of the insertion portion 231 opposite to the one end connected to the holding portion 232; the second slits 234 are two in number and communicate with the holding space.
as shown in fig. 4, the feed points 3 of the two universal nails 21 form an angle a, which is preferably acute.
however, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.
Claims (4)
1. A Dynamic screw, characterized in that it comprises a universal nail (21), an outer seat (22), and an intermediate body (23); wherein the universal nail (21) comprises a threaded portion (211), a spherical portion (212); the spherical part (212) is connected to the end of the threaded part (211);
The outer seat (22) comprises a crown portion (221), an intermediate body accommodating portion (222), and a plurality of projection portions (223); the intermediate body accommodating part (222) is formed inside the crown part (221), the plurality of protruding parts (223) are arranged at the end part of the crown part (221), and the plurality of protruding parts (223) are respectively provided with a hook part (224);
The intermediate body (23) comprises an insertion portion (231), a spherical portion accommodating portion (235) and two clamping portions (232); two clamping portions (232) connect the insertion portion (231), the spherical portion accommodating portion (235) being formed inside the insertion portion (231); the two clamping parts (232) form a clamping space for clamping the fixing rod (1);
the intermediate body (23) is arranged in the intermediate body housing (222) of the outer seat (22); the spherical part (212) of the universal nail (21) is arranged in the spherical part accommodating part (235) of the insertion part (231); the ball-shaped part (212) of the universal nail (21) can rotate in the ball-shaped part accommodating part (235), so that the fixed angle of the universal nail (21) is adjusted;
the outer circumferential surface of the insertion portion (231) is provided with a plurality of first slits (233) and a plurality of second slits (234) along the axial direction; the first gap (233) starts from the other end of the insertion part (231) opposite to the end connected with the clamping part (232), extends along the axial direction and does not extend to the end of the insertion part (231) connected with the clamping part (232); the second slit (234) starts from one end of the insertion portion (231) connected to the clamping portion (232) and extends in the axial direction without extending to the other end of the insertion portion (231) opposite to the one end connected to the clamping portion (232).
2. a Dynamic screw according to claim 1, wherein said second slit (234) is two in number and communicates with said clamping space.
3. Dynamic screw according to one of claims 1 to 2, characterised in that the feed points (3) of the two universal nails (21) form an angle a.
4. a Dynamic screw according to claim 3, wherein said angle a is preferably acute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821291193.0U CN209789983U (en) | 2018-08-12 | 2018-08-12 | Dynamic screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821291193.0U CN209789983U (en) | 2018-08-12 | 2018-08-12 | Dynamic screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209789983U true CN209789983U (en) | 2019-12-17 |
Family
ID=68815981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821291193.0U Active CN209789983U (en) | 2018-08-12 | 2018-08-12 | Dynamic screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209789983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009385A (en) * | 2018-08-12 | 2018-12-18 | 苏州爱得科技发展股份有限公司 | A kind of dynamic state screw |
-
2018
- 2018-08-12 CN CN201821291193.0U patent/CN209789983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009385A (en) * | 2018-08-12 | 2018-12-18 | 苏州爱得科技发展股份有限公司 | A kind of dynamic state screw |
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