CN211131342U - Anti-loosening fastening structure and fastening device - Google Patents
Anti-loosening fastening structure and fastening device Download PDFInfo
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- CN211131342U CN211131342U CN201921481925.7U CN201921481925U CN211131342U CN 211131342 U CN211131342 U CN 211131342U CN 201921481925 U CN201921481925 U CN 201921481925U CN 211131342 U CN211131342 U CN 211131342U
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Abstract
The utility model provides a locking fastening structure and fastener is provided with the fastener in locking fastening structure, and the fastener is the columnar structure of porous clearance, has first external screw thread on the outer peripheral face of fastener to twist into the osseous tissue with at least some of fastener, this locking fastening structure of accessible fixes prostheses such as steel sheet on the osseous tissue like this. Because the fastener is a porous columnar structure, after the fastener is screwed into the bone tissue, the bone tissue can grow into a plurality of pores of the fastener, so that the biological fusion and the reliable connection of the fastener and the bone tissue can be realized, the problem that the fastener is convoluted and loosened when a patient moves is prevented, and the reliability of the long-term implantation of the prosthesis is improved. Through setting up the operation chamber, can follow a plurality of apertures of operation intracavity direct observation fastener when being convenient for rotate the fastener to can observe the condition that bone tissue grows into a plurality of apertures. Through setting up the end cap, can prevent inside pulp cavity of bone tissue and outside soft tissue intercommunication.
Description
Technical Field
The utility model relates to the technical field of medical equipment, particularly, relate to an anti-loosening fastening structure and fastener.
Background
Joint diseases, orthopedic trauma, congenital skeletal deformities, etc., all cause skeletal pain or dysfunction in patients. Steel plate reinforcement, bone segment and joint replacement are effective means for treating joint diseases, orthopedic trauma and congenital skeletal deformity.
Steel plate reinforcement, bone segment and joint replacement typically involve the use of orthopedic screws to connect prostheses such as implanted steel plates to the bone tissue. Due to walking or load bearing of a human body and other reasons, the existing orthopedic screw can be convoluted under the action of cyclic stress in the human body, so that the implanted prosthesis is loosened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a locking fastening structure and fastener to the easy not hard up problem of orthopedics screw among the solution prior art.
In order to solve the above problem, according to the utility model discloses an aspect, the utility model provides a locking fastening structure, include: the fastener is a porous columnar structure, and the outer peripheral surface of the fastener is provided with a first external thread so as to screw at least one part of the fastener into bone tissue.
Further, the fastener has an operation chamber, has spacing face on the inner wall in operation chamber, and the operation chamber is used for penetrating a part of operation tool, and the spacing face in operation chamber is used for spacing cooperation with the operation tool to rotate the fastener through the operation tool.
Further, the fastener has opposite first and second ends, the first end for penetrating into bone tissue, the first end having a tapered configuration.
Further, the fastener has opposite first and second ends, the first end is used for penetrating in the bone tissue, and locking fastening structure still includes: the limiting piece is arranged at the second end of the fastening piece, and the radial size of the limiting piece is larger than that of the fastening piece.
Furthermore, the limiting part is of a solid structure, and the fastener and the limiting part are integrally formed.
Further, the fastener is provided with an operation cavity, the inner wall of the operation cavity is provided with a limiting surface, the operation cavity is used for penetrating a part of the operation tool, and the limiting surface is used for limiting and matching with the operation tool so as to rotate the fastener through the operation tool; the locating part has dodges the hole, dodges hole and operation chamber intercommunication.
Further, the anti-loose fastening structure further includes: the end cap, end cap detachably are connected with the locating part, and the end cap is used for the shutoff to dodge the hole.
Furthermore, the inner wall of the avoiding hole is provided with an internal thread, the outer peripheral surface of the plug is provided with a second external thread, and the second external thread is connected with the internal thread in a matching manner.
Furthermore, the plug is provided with an operation hole, the inner wall of the operation hole is provided with a limiting surface, the operation hole is used for penetrating a part of the operation tool, and the limiting surface of the operation hole is used for being in limiting fit with the operation tool so as to rotate the plug through the operation tool.
According to another aspect of the present invention, there is provided a fastening device, the fastening device including an anti-loosening fastening structure and an operating tool, the operating tool including a handle, a connecting rod and an operating portion connected in sequence, at least a part of the operating portion being used for penetrating the anti-loosening fastening structure to rotate the anti-loosening fastening structure.
Use the technical scheme of the utility model, be provided with the fastener in locking fastening structure, the fastener is the column structure of porous clearance, has first external screw thread on the outer peripheral face of fastener to twist into the bone tissue with at least some of fastener, this locking fastening structure of accessible fixes prostheses such as steel sheet on the bone tissue like this. Because the fastener is a porous columnar structure, after the fastener is screwed into the bone tissue, the bone tissue can grow into a plurality of pores of the fastener, so that the biological fusion and the reliable connection of the fastener and the bone tissue can be realized, the problem that the fastener is convoluted and loosened when a patient moves is prevented, and the reliability of the long-term implantation of the prosthesis is improved.
Moreover, through the arrangement of the operation cavity, the fastener can be conveniently rotated, and meanwhile, the plurality of pores of the fastener can be directly observed from the operation cavity, so that the condition that bone tissues grow into the plurality of pores can be observed. Optionally, the radial cross section of the operation cavity is a regular hexagon, and the radial cross section of the part of the operation tool matched with the operation cavity is also a regular hexagon, so that the insertion is convenient and the reliable limit is realized. Through setting up the end cap, can prevent inside pulp cavity of bone tissue and outside soft tissue intercommunication. Through above-mentioned operating means, can use same operating means to rotate fastener and end cap, need not to change the instrument like this, the operation of being convenient for can reduce instrument quantity moreover, reduces manufacturing cost.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view illustrating an anti-loose fastening structure provided by an embodiment of the present invention;
FIG. 2 shows a schematic view of the fastener and limiter of FIG. 1;
FIG. 3 shows a right side view of FIG. 2;
FIG. 4 shows a schematic view of the plug of FIG. 1;
FIG. 5 shows a right side view of FIG. 4;
fig. 6 shows a schematic view of an operating tool in a fastening device according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a fastener; 11. a first external thread; 12. an operating chamber; 20. a limiting member; 21. avoiding holes; 22. an internal thread; 30. a plug; 31. a second external thread; 32. an operation hole; 40. an operating tool; 41. a handle; 42. a connecting rod; 43. a first rod body; 44. a second rod body.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 5, an embodiment of the present invention provides an anti-loose fastening structure, including: fastener 10, fastener 10 being a porous cylindrical structure, fastener 10 having a first external thread 11 on its outer circumference to screw at least a portion of fastener 10 into bone tissue.
Use the technical scheme of the utility model, be provided with fastener 10 in locking fastening structure, fastener 10 is the column structure of porous clearance, has first external screw thread 11 on fastener 10's the outer peripheral face to twist at least some with fastener 10 in the osseous tissue, this locking fastening structure of accessible fixes prostheses such as steel sheet on the osseous tissue like this. Because the fastener 10 is a porous columnar structure, after the fastener 10 is screwed into the bone tissue, the bone tissue can grow into a plurality of pores of the fastener 10, so that biological fusion and reliable connection between the fastener 10 and the bone tissue can be realized, the problem that the fastener 10 is convoluted and loosened when a patient moves is prevented, and the reliability of long-term implantation of the prosthesis is improved.
In the present embodiment, the fastening member 10 has an operation cavity 12, the operation cavity 12 has a limiting surface on an inner wall thereof, the operation cavity 12 is used for penetrating a part of the operation tool 40, and the limiting surface of the operation cavity 12 is used for limiting and matching with the operation tool 40 so as to rotate the fastening member 10 by the operation tool 40. The operation chamber 12 is used for penetrating a part of the operation tool 40, and it is understood that the operation chamber 12 is used for allowing a part of the structure of the operation tool 40 to penetrate into the operation chamber 12. After a part of the structure of the operating tool 40 penetrates into the operating cavity 12, the limiting surface of the operating cavity 12 is in limiting fit with the operating tool 40, so that the circumferential relative position of the fastener 10 and the operating tool 40 is fixed, and then the operating tool 40 is rotated to drive the fastener 10, so as to realize the installation and the disassembly of the fastener 10.
Moreover, by providing the operation cavity 12, the plurality of pores of the fastener 10 can be directly observed from the inside of the operation cavity 12, so that the condition that bone tissues grow into the plurality of pores can be observed, and observation and study such as experiments can be conveniently carried out. Alternatively, the radial cross section of the operation cavity 12 is a regular hexagon, and the radial cross section of the part of the operation tool 40, which is matched with the operation cavity 12, is also a regular hexagon, so that the insertion is convenient and the reliable limit is realized.
In this embodiment, the fastener 10 has opposite first and second ends, the first end for penetrating into bone tissue and the first end having a tapered configuration. The above arrangement facilitates the threading of the fastener 10 into bone tissue.
In this embodiment, the fastener 10 has opposite first and second ends, the first end is used for penetrating into bone tissue, and the anti-loose fastening structure further comprises: and the limiting piece 20 is arranged at the second end of the fastener 10, and the radial dimension of the limiting piece 20 is larger than that of the fastener 10. The limiting member 20 is used for matching with a prosthesis such as a steel plate to be implanted to limit the prosthesis and realize reliable connection between the prosthesis and bone tissue.
Further, the limiting member 20 is a solid structure, and the fastening member 10 and the limiting member 20 are integrally formed. Through the arrangement, the overall structure strength of the anti-loosening fastening structure can be improved, and the anti-deformation capacity is improved, so that the reliability is improved. Alternatively, the fastener 10 and the retaining member 20 are made by 3D printing, which facilitates the fabrication of aperture structures and other complex structures.
In the present embodiment, the fastener 10 has an operation cavity 12, the inner wall of the operation cavity 12 has a limiting surface, the operation cavity 12 is used for penetrating a part of the operation tool 40, and the limiting surface is used for limiting and matching with the operation tool 40 so as to rotate the fastener 10 by the operation tool 40; the limiting member 20 has an avoiding hole 21, and the avoiding hole 21 is communicated with the operation cavity 12. By providing the avoiding hole 21, the stopper 20 can be prevented from blocking the operating cavity 12, so that the tool can be inserted easily.
As shown in fig. 1 and 4, the loose-proof fastening structure further includes: the plug 30, the plug 30 is detachably connected with the limiting member 20, and the plug 30 is used for plugging the avoiding hole 21. By providing the plug 30, the medullary cavity inside the bone tissue is prevented from communicating with the external soft tissue. The plug 30 is a solid structure made of titanium alloy, and the plug 30 can be provided with a linear structure, a cross structure, a meter structure, an inner hexagonal structure, an outer hexagonal structure and the like so as to screw in and out the plug 30 under the action of an external torque.
In this embodiment, the inner wall of the avoiding hole 21 has an internal thread 22, and the outer circumferential surface of the plug 30 has a second external thread 31, and the second external thread 31 is connected with the internal thread 22 in a matching manner. Therefore, the plug 30 and the limiting member 20 can be conveniently connected or disconnected in a threaded manner. Optionally, the plug 30 is a solid structure, which can improve the structural strength.
In this embodiment, the plug 30 has an operation hole 32, the inner wall of the operation hole 32 has a limiting surface, the operation hole 32 is used for penetrating a part of the operation tool 40, and the limiting surface of the operation hole 32 is used for limiting and matching with the operation tool 40, so as to rotate the plug 30 by the operation tool 40. The operation hole 32 is used for penetrating a part of the operation tool 40, and it is understood that the operation hole 32 is used for allowing a part of the structure of the operation tool 40 to penetrate into the operation hole 32. After a part of the structure of the operating tool 40 penetrates into the operating hole 32, the limiting surface of the operating hole 32 is in limiting fit with the operating tool 40, so that the circumferential relative positions of the plug 30 and the operating tool 40 are fixed, and then the plug 30 can be screwed by rotating the operating tool 40, so that the mounting and dismounting of the plug 30 are realized. Alternatively, the radial cross section of the operation hole 32 is a regular hexagon, and the radial cross section of the part of the operation tool 40 matched with the operation hole 32 is also a regular hexagon, so that the insertion is convenient and the reliable limit is realized.
As shown in fig. 6, another embodiment of the present invention provides a fastening device, which includes an anti-loose fastening structure and an operating tool 40, wherein the anti-loose fastening structure is the above-mentioned anti-loose fastening structure, the operating tool 40 includes a handle 41, a connecting rod 42 and an operating part which are connected in sequence, and at least a part of the operating part is used for penetrating the anti-loose fastening structure to rotate the anti-loose fastening structure. In use, the handle 41 is grasped and rotated, and then torque can be transmitted through the connecting rod 42 and the operating portion to rotate the fastener 10 or the plug 30 in the anti-loose fastening structure.
Optionally, the operation portion includes a first rod 43 and a second rod 44 connected to each other, wherein the first rod 43 is connected to the connecting rod 42, a radial dimension of the first rod 43 is greater than a radial dimension of the second rod 44, the first rod 43 is configured to penetrate into the operation cavity 12 of the fastening member 10 and cooperate with a limiting surface of the operation cavity 12 to rotate the fastening member 10, and the second rod 44 is configured to penetrate into the operation hole 32 of the plug 30 and cooperate with a limiting surface of the operation hole 32 to rotate the plug 30. Through the arrangement, the same operation tool 40 can be used for rotating the fastener 10 and the plug 30, so that the tool does not need to be replaced, the operation is convenient, the number of tools can be reduced, and the manufacturing cost is reduced. Alternatively, the radial cross sections of the first rod 43 and the second rod 44 are both regular hexagons. The connecting rod 42, the first rod 43 and the second rod 44 are of an integral structure, so that the strength can be improved, and the manufacturing is convenient.
Use the technical scheme of the utility model, be provided with fastener 10 in locking fastening structure, fastener 10 is the column structure of porous clearance, has first external screw thread 11 on fastener 10's the outer peripheral face to twist at least some with fastener 10 in the osseous tissue, this locking fastening structure of accessible fixes prostheses such as steel sheet on the osseous tissue like this. Because the fastener 10 is a porous columnar structure, after the fastener 10 is screwed into the bone tissue, the bone tissue can grow into a plurality of pores of the fastener 10, so that biological fusion and reliable connection between the fastener 10 and the bone tissue can be realized, the problem that the fastener 10 is convoluted and loosened when a patient moves is prevented, and the reliability of long-term implantation of the prosthesis is improved.
Furthermore, by providing working lumen 12, the plurality of apertures of fastener 10 can be directly observed from within working lumen 12 while facilitating rotation of fastener 10, thereby allowing observation of bone tissue growth into the plurality of apertures. Alternatively, the radial cross section of the operation cavity 12 is a regular hexagon, and the radial cross section of the part of the operation tool 40, which is matched with the operation cavity 12, is also a regular hexagon, so that the insertion is convenient and the reliable limit is realized. By providing the plug 30, the medullary cavity inside the bone tissue is prevented from communicating with the external soft tissue. Through the operation tool 40, the same operation tool 40 can be used for rotating the fastener 10 and the plug 30, so that the tool does not need to be replaced, the operation is convenient, the number of tools can be reduced, and the manufacturing cost is reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An anti-loosening fastening structure, comprising:
a fastener (10), the fastener (10) being a porous cylindrical structure, the fastener (10) having a first external thread (11) on an outer peripheral surface thereof for screwing at least a portion of the fastener (10) into bone tissue.
2. The anti-loose fastening structure according to claim 1, characterized in that the fastening member (10) has an operation cavity (12), the operation cavity (12) has a limiting surface on an inner wall thereof, the operation cavity (12) is used for penetrating a part of an operation tool (40), and the limiting surface of the operation cavity (12) is used for limiting and cooperating with the operation tool (40) so as to rotate the fastening member (10) by the operation tool (40).
3. The anti-loosening fastening structure according to claim 1, wherein the fastener (10) has opposite first and second ends, the first end for penetrating into the bone tissue, the first end being of a tapered configuration.
4. The anti-loosening fastening structure according to claim 1, wherein the fastener (10) has opposite first and second ends, the first end for penetrating into the bone tissue, the anti-loosening fastening structure further comprising:
a stop member (20) disposed at a second end of the fastener (10), the radial dimension of the stop member (20) being greater than the radial dimension of the fastener (10).
5. The anti-loosening fastening structure according to claim 4, wherein the retaining member (20) is a solid structure, and the fastening member (10) is integrally formed with the retaining member (20).
6. The loose-prevention fastening structure according to claim 4,
the fastener (10) is provided with an operation cavity (12), the inner wall of the operation cavity (12) is provided with a limiting surface, the operation cavity (12) is used for penetrating a part of an operation tool (40), and the limiting surface is used for being in limiting fit with the operation tool (40) so as to rotate the fastener (10) through the operation tool (40);
the limiting piece (20) is provided with an avoiding hole (21), and the avoiding hole (21) is communicated with the operation cavity (12).
7. The loose-proof fastening structure according to claim 6, further comprising:
the plug (30), plug (30) detachably with locating part (20) are connected, plug (30) are used for the shutoff dodge hole (21).
8. The anti-loose fastening structure according to claim 7, wherein the inner wall of the avoiding hole (21) is provided with an internal thread (22), the outer peripheral surface of the plug (30) is provided with a second external thread (31), and the second external thread (31) is in fit connection with the internal thread (22).
9. The anti-loose fastening structure according to claim 8, characterized in that the plug (30) is provided with an operation hole (32), the inner wall of the operation hole (32) is provided with a limiting surface, the operation hole (32) is used for penetrating a part of an operation tool (40), and the limiting surface of the operation hole (32) is used for being in limiting fit with the operation tool (40) so as to rotate the plug (30) through the operation tool (40).
10. A fastening device characterized by comprising an anti-loose fastening structure as claimed in any one of claims 1 to 9 and an operating tool (40), the operating tool (40) comprising a handle (41), a connecting rod (42) and an operating portion connected in sequence, at least a part of the operating portion being for penetrating the anti-loose fastening structure to rotate the anti-loose fastening structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921481925.7U CN211131342U (en) | 2019-09-06 | 2019-09-06 | Anti-loosening fastening structure and fastening device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921481925.7U CN211131342U (en) | 2019-09-06 | 2019-09-06 | Anti-loosening fastening structure and fastening device |
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| CN211131342U true CN211131342U (en) | 2020-07-31 |
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| CN201921481925.7U Active CN211131342U (en) | 2019-09-06 | 2019-09-06 | Anti-loosening fastening structure and fastening device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448372A (en) * | 2019-09-06 | 2019-11-15 | 北京爱康宜诚医疗器材有限公司 | Locking fastening structure and clamp device |
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2019
- 2019-09-06 CN CN201921481925.7U patent/CN211131342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448372A (en) * | 2019-09-06 | 2019-11-15 | 北京爱康宜诚医疗器材有限公司 | Locking fastening structure and clamp device |
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