Wrench for dental implant

Abstract

The wrench comprises a first handle, a second handle and a lengthening rod which are coaxially arranged, the second handle is rotatably installed at one end of the first handle, a first installation hole extending in the axial direction is formed in the end, away from the first handle, of the second handle, the lengthening rod is detachably inserted into the first installation hole, and a second installation hole extending in the axial direction is formed in the end, away from the first handle, of the second handle. The portion, inserted into the first mounting hole, of the lengthening rod is provided with a tangent plane extending in the axial direction of the lengthening rod, the second handle is in threaded connection with a fastener abutting against the tangent plane, and a working sleeve is integrally formed at the free end of the lengthening rod. Through the arrangement of the lengthening rod, the insertion depth of the lengthening rod on the second handle can be adjusted according to needs, so that the use requirements of different positions are met, the wrench does not need to be replaced, and the use is more flexible and convenient; meanwhile, the second handle is rotatably installed on the first handle, the lengthening rod can be controlled to rotate by rotating the second handle, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a wrench for dental implantation. Background Art

[0002] During the dental implant surgery, a socket wrench is required to install fixing screws, support pins, dental implants, positioning screws, etc. The existing socket wrenches are usually an integrated structure, and the length of the wrench cannot be adjusted according to the use position. The versatility is low, which increases the user's cost and is not conducive to improving work efficiency. Utility Model Content

[0003] The utility model aims at solving the defects in the prior art and provides a wrench for dental implantation. The length of the wrench can be adjusted according to different use positions, so the use is more flexible and convenient, and the use cost of the user is reduced.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A dental implant wrench includes a first handle, a second handle and an extension rod which are coaxially arranged, wherein the second handle is rotatably mounted on one end of the first handle, and an axially extending first mounting hole is provided at the end of the second handle away from the first handle, wherein the extension rod is detachably inserted into the first mounting hole, and a fastener is threadedly connected to the second handle, wherein the fastener conflicts with the portion of the extension rod inserted into the first mounting hole, and a working sleeve is integrally formed at the free end of the extension rod. By providing the extension rod and fixing the extension rod in the first mounting hole by the fastener, the insertion depth of the extension rod in the first mounting hole can be adjusted as needed, thereby adjusting the length of the wrench, thereby adapting to the use requirements of different positions, without the need to replace the wrench, and making the use more flexible and convenient, which is conducive to improving work efficiency; at the same time, by making the second handle rotatably mounted on the first handle, the rotation of the extension rod can be controlled by rotating the second handle during work, which is convenient to use.

[0006] As a preferred technical solution, a connecting shaft is provided at one end of the second handle, and a first limiting ring and a second limiting ring are provided on the outer side of the connecting shaft, and the first limiting ring and the second limiting ring are spaced and sleeved on the outer side of the connecting shaft, and a second mounting hole corresponding to the connecting shaft is provided on the first handle, and first and second containing grooves corresponding to the first limiting ring and the second limiting ring are provided at both ends of the second mounting hole, and during assembly, the connecting shaft is inserted into the second mounting hole, and the first limiting ring and the second limiting ring are respectively embedded in the first containing groove and the second containing groove.

[0007] As a preferred technical solution, a threaded hole is provided at the free end of the connecting shaft, the axial direction of the threaded hole is the same as the axial direction of the connecting shaft, a limit screw is threadedly connected to the threaded hole, and a force adjusting spring is provided on the part of the limit screw extending out of the threaded hole. During assembly, one end of the force adjusting spring conflicts with the second limit ring, and the other end conflicts with the head of the limit screw.

[0008] As a preferred technical solution, an operating cavity connected to the second receiving groove is provided in the first handle, the head of the limit screw is located in the operating cavity, an opening is provided at one end of the operating cavity away from the second receiving groove, and a sealing screw is provided at the opening.

[0009] As a preferred technical solution, the connecting shaft is integrally connected to the second handle.

[0010] As a preferred technical solution, the diameters of the first limiting ring and the second limiting ring are both larger than the diameter of the connecting shaft.

[0011] As a preferred technical solution, a fixing hole connected to the first mounting hole is provided on the circumference of the second handle, the fixing hole is located at an end of the second handle away from the first handle, and the fastener is threadedly connected in the fixing hole.

[0012] As a preferred technical solution, a first through hole connected to the first mounting hole is provided on the circumference of the second handle, the first through hole passes through two opposite sides of the second handle, and the first through hole is located at one end of the second handle close to the first handle.

[0013] As a preferred technical solution, the first handle and the second handle are both provided with anti-slip patterns on their circumferential sides.

[0014] As a preferred technical solution, the diameter of one end of the first handle close to the second handle gradually decreases.

[0015] As a preferred technical solution, the portion of the extension rod inserted into the first mounting hole is provided with a tangent plane extending along the axial direction of the extension rod, and the fastener is in conflict with the tangent plane.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, by providing an extension rod and fixing the extension rod in the first mounting hole by a fastener, the insertion depth of the extension rod in the first mounting hole can be adjusted as needed, thereby adjusting the length of the wrench to adapt to the use requirements of different positions, without the need to replace the wrench, and is more flexible and convenient to use, which is conducive to improving work efficiency; at the same time, in actual work, the extension rod with different working sleeves can also be replaced, so as to be suitable for tightening operations of different workpieces; and, by making the second handle rotatably installed on the first handle, the rotation of the extension rod can be controlled by rotating the second handle during work, which is more convenient to use.

[0017] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an assembly structure diagram of an embodiment of the utility model;

[0019] Figure 2 It is an exploded structural diagram of an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the first handle of the embodiment of the utility model;

[0021] Figure 4 It is an exploded structural diagram of the second handle of the embodiment of the utility model.

[0022] Description of the accompanying drawings:

[0023] 10. First handle 11. First limiting ring 12. Second limiting ring

[0024] 13. Second mounting hole 14. First receiving groove 15. Second receiving groove

[0025] 16. Operating cavity 17. Opening 18. Sealing screw

[0026] 20. Second handle 21. First mounting hole 22. Connecting shaft

[0027] 23. Limit screw 24. Force adjustment spring 25. Fixing hole

[0028] 26, threaded hole 27, first through hole 28, second through hole

[0029] 30. Extension rod 31. Cutting plane 32. Working sleeve. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] like Figure 1-3 As shown, the utility model is a wrench for dental implantation, comprising a coaxially arranged first handle 10, a second handle 20 and an extension rod 30, the second handle 20 being rotatably mounted on one end of the first handle 10, the end of the second handle 20 away from the first handle 10 being provided with an axially extending first mounting hole 21, the extension rod 30 being detachably inserted into the first mounting hole 21, the portion of the extension rod 30 inserted into the first mounting hole 21 being provided with a cutting plane 31 extending along the axial direction of the extension rod 30, a fastener (not shown) that interferes with the cutting plane 31 is threadedly connected to the second handle 20, and a working sleeve 32 is integrally formed at the free end of the extension rod 30.

[0033] In the present invention, a fixing hole 25 connected to the first mounting hole 21 is provided on the circumferential side of the second handle 20. The fixing hole 25 is located at the end of the second handle 20 away from the first handle 10. The fastener is threadedly connected to the fixing hole 25. When in use, the fastener is rotated so that the fastener is away from or against the tangent plane 31 of the extension rod 30. When the fastener is away from the tangent plane 31, the extension rod 30 can be telescopically adjusted in the first mounting hole 21, and the extension rod 30 can also be replaced; when the fastener is pressed against the tangent plane 31, the extension rod 30 cannot move relative to the second handle 20. At this time, the extension rod 30 can be rotated by the second handle 20, and the workpiece can be loosened or tightened by the working sleeve 32 on the extension rod 30. In the present invention, the fastener can be a screw, a bolt or a stud.

[0034] In this embodiment, the extension rod 30 is cylindrical, and a tangent plane 31 is provided on the extension rod 30, and a fastener is pressed against the tangent plane 31, so that the extension rod 30 can be prevented from rotating relative to the second handle 20 during operation. It should be understood that the tangent plane 31 can also be replaced by a plurality of positioning grooves extending along the axial direction of the extension rod 30, and in this case, the fastener cooperates with different positioning grooves to limit different extension lengths of the extension rod; in addition, the extension rod 30 can also be set as a non-cylindrical structure, such as a rectangular parallelepiped, in which case there is no need to set a tangent plane.

[0035] Specifically, a connecting shaft 22 is provided at one end of the second handle 20, and a first limiting ring 11 and a second limiting ring 12 are provided on the outer side of the connecting shaft 22, and the first limiting ring 11 and the second limiting ring 12 are sleeved on the outer side of the connecting shaft 22 at intervals, and a second mounting hole 13 corresponding to the connecting shaft 22 is provided on the first handle 10, and first and second containing grooves 14 and 15 corresponding to the first limiting ring 11 and the second limiting ring 12 are provided at both ends of the second mounting hole 13, respectively. When assembling, the connecting shaft 22 is inserted into the second mounting hole 13, and the first limiting ring 11 and the second limiting ring 12 are respectively embedded in the first containing groove 14 and the second containing groove 15. In the utility model, the diameters of the first limiting ring 11 and the second limiting ring 12 are both larger than the diameter of the connecting shaft 22. By providing the first limiting ring 11 and the second limiting ring 12, the concentricity of the first handle 20 when rotating is improved by limiting the connecting shaft 22 by the first limiting ring 11 and the second limiting ring 12. In the utility model, the connecting shaft 22 is integrally connected to the second handle 20, the first limiting ring 11 is tightly arranged in the first accommodating groove 14, the second limiting ring 12 is tightly arranged in the second accommodating groove 15, and the connecting shaft 22 is rotatably passed through the first limiting ring 11 and the second limiting ring 12. A threaded hole 26 is provided at the free end of the connecting shaft 22, and the axial direction of the threaded hole 26 is the same as the axial direction of the connecting shaft 22. The threaded hole 26 is internally threadedly connected to a limit screw 23, and the portion of the limit screw 23 extending out of the threaded hole is sleeved with a force adjusting spring 24. During assembly, one end of the force adjusting spring 24 conflicts with the second limit ring 12, and the other end conflicts with the head of the limit screw 23. The elastic force of the force adjusting spring 24 makes the connecting shaft 22 always have a tendency to move into the second mounting hole 13, so that the second handle 20 is maintained on the first handle 10, and the compression degree of the force adjusting spring 24 can be adjusted by rotating the limit screw 23, thereby changing the tightness between the second handle 20 and the first handle 10.

[0036] An operating cavity 16 connected to the second accommodating groove 15 is provided in the first handle 10, and the head of the limit screw 23 is located in the operating cavity 16. An opening 17 is provided at the end of the operating cavity 16 away from the second accommodating groove 15, and a sealing screw 18 is provided at the opening 17. During operation, the limit screw 23 can be rotated by inserting a tool such as a screwdriver or a wrench into the operating cavity 16. After the operation is completed, the opening 17 of the operating cavity 16 is sealed by the sealing screw 18.

[0037] In the present invention, the second handle 20 is provided with a first through hole 27 connected to the first mounting hole 21 on the circumferential side thereof. The first through hole 27 penetrates two opposite sides of the second handle 20. The first through hole 27 is located at one end of the second handle 20 close to the first handle 10. The connecting shaft 22 is provided with a second through hole 28 on the circumferential side thereof, penetrating two opposite sides of the connecting shaft 22. The axes of the first through hole 27 and the second through hole 28 are parallel to each other and intersect with the axis of the connecting shaft 22. By providing the first through hole 27 and the second through hole 28, the direction of rotation of the second handle can be identified during operation, and the power rod can also be passed through the first through hole to increase the rotation force through the power rod.

[0038] The first handle 10 and the second handle 20 are both provided with anti-slip patterns on their circumferences. The diameter of one end of the first handle 10 close to the second handle 20 gradually decreases.

[0039] To sum up, the utility model provides an extension rod and fixes the extension rod in the first mounting hole by a fastener, so that the insertion depth of the extension rod in the first mounting hole can be adjusted as needed, thereby adjusting the length of the wrench to adapt to the use requirements of different positions, without the need to replace the wrench, and is more flexible and convenient to use, which is conducive to improving work efficiency; at the same time, in actual work, the extension rod with different working sleeves can also be replaced, so as to be suitable for tightening operations of different workpieces; and, by making the second handle rotatably installed on the first handle, the rotation of the extension rod can be controlled by rotating the second handle during work, which is more convenient to use.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A dental implant wrench, characterized in that: The utility model comprises a first handle, a second handle and an extension rod which are coaxially arranged. The second handle can be rotatably installed on one end of the first handle. The end of the second handle away from the first handle is provided with a first installation hole which extends axially. The extension rod can be detachably inserted into the first installation hole. A fastener is threadedly connected to the second handle. The fastener conflicts with the part of the extension rod which is inserted into the first installation hole. The free end of the extension rod is integrally formed with a working sleeve.

2. A dental implant wrench according to claim 1, characterized in that: A connecting shaft is provided at one end of the second handle, and a first limiting ring and a second limiting ring are provided on the outer side of the connecting shaft. The first limiting ring and the second limiting ring are spaced and sleeved on the outer side of the connecting shaft. A second mounting hole corresponding to the connecting shaft is provided on the first handle, and first and second containing grooves corresponding to the first limiting ring and the second limiting ring are provided at both ends of the second mounting hole. During assembly, the connecting shaft is inserted into the second mounting hole, and the first limiting ring and the second limiting ring are respectively embedded in the first containing groove and the second containing groove.

3. A dental implant wrench according to claim 2, characterized in that: A threaded hole is provided at the free end of the connecting shaft, and the axial direction of the threaded hole is the same as the axial direction of the connecting shaft. A limit screw is threadedly connected to the threaded hole, and a force adjusting spring is sleeved on the part of the limit screw extending out of the threaded hole. During assembly, one end of the force adjusting spring conflicts with the second limit ring, and the other end conflicts with the head of the limit screw.

4. A dental implant wrench according to claim 3, characterized in that: An operating cavity communicated with the second receiving groove is provided in the first handle, the head of the limit screw is located in the operating cavity, an end of the operating cavity away from the second receiving groove is provided with an opening, and a sealing screw is provided at the opening.

5. The dental implant wrench according to claim 2, characterized in that: The connecting shaft is integrally connected to the second handle.

6. The dental implant wrench according to claim 2, characterized in that: The diameters of the first limiting ring and the second limiting ring are both larger than the diameter of the connecting shaft.

7. The dental implant wrench according to claim 1, characterized in that: A fixing hole communicating with the first mounting hole is provided on the peripheral side of the second handle. The fixing hole is located at an end of the second handle away from the first handle, and the fastener is threadedly connected in the fixing hole.

8. The dental implant wrench according to claim 1, characterized in that: A first through hole communicating with the first mounting hole is provided on the peripheral side of the second handle, the first through hole passes through two opposite sides of the second handle, and the first through hole is located at one end of the second handle close to the first handle.

9. The dental implant wrench according to claim 1, characterized in that: The first handle and the second handle are both provided with anti-slip patterns on their circumferences.

10. The dental implant wrench according to claim 1, characterized in that: The portion of the extension rod inserted into the first mounting hole is provided with a tangent plane extending along the axial direction of the extension rod, and the fastener is in conflict with the tangent plane.

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