Dental implant bone fetcher

Abstract

The utility model discloses a dental implant bone fetcher which comprises a drill bit and a drill bushing, the drill bit comprises a drill rod, a connecting seat and a drill edge which are sequentially connected, the drill edge is provided with a bone scrap containing hole extending in the axial direction of the drill edge, the upper end, away from the drill rod, of the drill edge is provided with an edge point, and the drill bushing is provided with a bone scrap containing part and an elastic sleeving part. The elastic sleeving part is provided with a plurality of sectioning claws, arc-shaped protrusions are arranged on the inner sides of the sectioning claws, a plurality of annular grooves corresponding to the arc-shaped protrusions are formed in the circumferential side of the connecting base, the annular grooves are distributed in the axial direction of the connecting base, and when the bone scrap collecting part is used, the bone scrap collecting part is arranged on the outer side of a drill edge in a sleeving mode, and the sectioning claws are clamped on the outer side of the connecting base. And the arc-shaped bulges are embedded in the corresponding annular grooves. Relative sliding of the drill bushing and the drill bit during working can be avoided, and stable and normal working of the bone fetcher can be guaranteed; and meanwhile, the abutting force of the side wall of the connecting base to the sectioning claw can be reduced, and the situation that the clamping force of the sectioning claw is reduced due to elastic fatigue is prevented.

Description

Technical Field

[0001] The utility model relates to a dental implant medical device, in particular to a dental implant bone extractor. Background Art

[0002] Dental implants are an ideal method of tooth restoration, and autologous bone is required for dental implant surgery. When a tooth is lost, the alveolar bone where it is located will shrink, and it is likely that it will not be enough when the dental implant is placed. At this time, some bone needs to be supplemented, and autologous bone is usually used because it is safer for dental implants, the healing effect after surgery is faster and more ideal, and the success rate of implantation is also higher.

[0003] When removing bones, bone (bone chips) from other parts of the patient are obtained through the blade and then transplanted to the alveolar bone. In order to maintain the activity of the bone chips, bone removal should be completed as soon as possible, so bone removal tools are very important. Existing bone removers usually include a drill bit and a drill sleeve. The drill bit is used to drill holes when removing bones, and the drilled bone chips are collected in the space between the drill bit and the drill sleeve. The existing drill sleeve is mainly clamped on the connecting seat of the drill bit by the split claws at its rear end. Since the peripheral side of the connecting seat is a smooth structure, it is easy to slip, affecting the normal use of the bone remover. Moreover, with the increase of usage time, the clamping force of the split claws will also decrease, resulting in a reduction in the service life of the bone remover. Utility Model Content

[0004] The utility model aims at solving the defects in the prior art and provides a dental implant bone extractor, which can improve the service life of the bone extractor, avoid the relative sliding of the drill sleeve and the drill bit during use, and ensure the stable operation of the bone extractor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dental implant bone remover comprises a drill bit and a drill sleeve, wherein the drill bit comprises a drill rod, a connecting seat and a drill blade connected in sequence, the drill blade is provided with a bone chip receiving hole extending along the axial direction of the drill blade, the drill blade is provided with a blade tip at the upper end away from the drill rod, the drill sleeve has a bone chip receiving portion and an elastic sleeve connecting portion, the elastic sleeve connecting portion is provided with a plurality of petal claws, the inner sides of the petal claws are provided with arc-shaped protrusions, the peripheral side of the connecting seat is provided with a plurality of annular grooves corresponding to the arc-shaped protrusions, and the plurality of annular grooves are distributed along the axial direction of the connecting seat. When in use, the bone chip receiving portion is sleeved on the outer side of the drill blade, the petal claws are clamped on the outer side of the connecting seat, and the arc-shaped protrusions are embedded in the corresponding annular grooves. By arranging an arc-shaped protrusion on the inner side of the petal-splitting claw and an annular groove on the peripheral side of the connecting seat, the height of the drill sleeve can be adjusted by the cooperation of the arc-shaped protrusion and the annular groove, and the relative sliding of the drill sleeve and the drill bit during operation can be avoided, thereby ensuring that the bone retriever can work stably and normally; at the same time, the resistance force of the side wall of the connecting seat to the petal-splitting claw can be reduced, thereby preventing the petal-splitting claw from reducing the clamping force due to elastic fatigue, thereby increasing the service life of the bone retriever.

[0007] As a preferred solution, the upper and lower sides of the arc-shaped protrusion are provided with connecting surfaces for facilitating the arc-shaped protrusion to slide into or out of the annular groove. The connecting surface can be an inclined surface or a curved surface. By providing the connecting surface, the arc-shaped protrusion can be more easily moved into and out of the annular groove when the drill sleeve is pushed to move.

[0008] As a preferred solution, the drill blade is symmetrically provided with arcuate concave surfaces on opposite sides, the arcuate concave surfaces extend along the axial direction of the drill blade, and the upper ends thereof penetrate to the upper end surface of the drill blade, the bone chip receiving hole penetrates the two arcuate concave surfaces along the radial direction of the drill blade, vertical blades are formed on both sides of the bone chip receiving hole, the upper end of the drill blade forms an arched transverse blade, and the blade tip is arranged in the middle of the transverse blade. By arranging the arcuate concave surface on the drill blade, vertical blades are formed on both sides of the arcuate concave surface, and the vertical blades can better collect bone chips into the bone chip receiving hole when the drill bit rotates.

[0009] As a preferred solution, the inner diameter of the elastic sleeve portion is smaller than the inner diameter of the bone chip receiving portion.

[0010] As a preferred solution, a gap communicating with the bone chip receiving hole is maintained between the inner surface of the bone chip receiving portion and the drill blade.

[0011] As a preferred solution, the bone chip receiving hole is in a racetrack shape.

[0012] As a preferred solution, the drill rod, the connecting seat and the drill blade are integrally connected and coaxially arranged.

[0013] As a preferred solution, the outer diameter of the connecting seat is larger than the outer diameter of the drill blade.

[0014] As a preferred solution, a stop ring protruding radially outward is provided at one end of the connecting seat close to the drill rod.

[0015] As a preferred solution, the arc-shaped protrusions on the inner sides of the plurality of splitting claws are located on the same virtual circle.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, by arranging an arc-shaped protrusion on the inner side of the petal-splitting claw and arranging an annular groove on the peripheral side of the connecting seat, the height of the drill sleeve can be adjusted by the cooperation of the arc-shaped protrusion and the annular groove, and the relative sliding of the drill sleeve and the drill bit during operation can be avoided, thereby ensuring that the bone remover can work stably and normally; at the same time, the resistance force of the side wall of the connecting seat to the petal-splitting claw can be reduced, thereby preventing the petal-splitting claw from reducing the clamping force due to elastic fatigue, thereby increasing the service life of the bone remover.

[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 It is a schematic diagram of the internal structure of a drill sleeve according to an embodiment of the utility model.

[0021] Description of the accompanying drawings:

[0022] 10. Drill bit 11. Drill rod 12. Connecting seat

[0023] 121, annular groove 122, stop ring 13, drill blade

[0024] 131, bone chip receiving hole 132, blade tip 133, arc-shaped concave surface

[0025] 134, horizontal blade 135, vertical blade 20, drill sleeve

[0026] 21. Bone scraps storage part 22. Elastic sleeve part 221. Splitting claw

[0027] 222. Arc-shaped protrusion 223. Connecting surface. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] like Figure 1-3 As shown, a dental implant bone extractor of the present invention comprises a drill bit 10 and a drill sleeve 20, wherein the drill bit 10 comprises a drill rod 11, a connecting seat 12 and a drill blade 13 connected in sequence, wherein the drill blade 13 is provided with a bone chip receiving hole 131 extending along the axial direction of the drill blade 13, and the upper end of the drill blade 13 away from the drill rod 11 is provided with a blade tip 132, and the drill sleeve 20 comprises a bone chip receiving portion 21 and an elastic sleeve connection portion 22, wherein the inner diameter of the elastic sleeve connection portion 22 is smaller than the inner diameter of the bone chip receiving portion 21, and the elastic sleeve connection portion 22 is provided with a plurality of petal claws 221, the inner sides of the split claws 221 are each provided with an arc-shaped protrusion 222, and the peripheral side of the connecting seat 12 is provided with a plurality of annular grooves 121 corresponding to the arc-shaped protrusions 222, and the plurality of annular grooves 121 are distributed along the axial direction of the connecting seat 12. When in use, the bone chip receiving portion 21 is sleeved on the outer side of the drill blade 13, the split claws 221 are clamped on the outer side of the connecting seat 12, and the arc-shaped protrusions 222 are embedded in the corresponding annular grooves 121, and a gap communicating with the bone chip accommodating hole 131 is maintained between the inner surface of the bone chip receiving portion 21 and the drill blade 13. In the present embodiment, an arc-shaped protrusion 222 is provided on each petal claw 221, and a plurality of annular grooves 121 are provided on the connecting seat 12. It should be noted that in actual use, only one annular protrusion may be provided on the connecting seat 12, and a plurality of arc-shaped grooves may be provided on each petal claw 221; or a plurality of arc-shaped protrusions 222 may be provided on each petal claw 221, and only one annular groove 121 may be provided on the connecting seat 12.

[0031] Specifically, the upper and lower sides of the arc-shaped protrusion 222 are provided with connection surfaces 223 for facilitating the arc-shaped protrusion 222 to slide into or out of the annular groove 121. The connection surface 223 can be an inclined surface or a curved surface. By providing the connection surface 223, the arc-shaped protrusion 222 can be more easily moved into and out of the annular groove 121 when the drill sleeve 20 is pushed.

[0032] In the present invention, the drill blade 13 is symmetrically provided with arcuate concave surfaces 133 on opposite sides, the arcuate concave surfaces 133 extend along the axial direction of the drill blade 13, and the upper end penetrates to the upper end surface of the drill blade 13, the bone chip receiving hole 131 penetrates the two arcuate concave surfaces 133 along the radial direction of the drill blade 13, and vertical blades 135 are formed on both sides of the bone chip receiving hole 131, the upper end of the drill blade 13 forms an arched transverse blade 134, the blade tip 132 is arranged in the middle of the transverse blade 134, and the bone chip receiving hole 131 is in a runway shape. By providing the arcuate concave surface 133 on the drill blade 13, vertical blades 135 are formed on both sides of the arcuate concave surface 133, and when the drill bit 10 rotates, the vertical blades 135 can better collect bone chips into the bone chip receiving hole 131.

[0033] Specifically, the drill rod 11, the connecting seat 12 and the drill blade 13 are integrally connected and coaxially arranged. The outer diameter of the connecting seat 12 is larger than the outer diameter of the drill blade 13. The end of the connecting seat 12 close to the drill rod 11 is provided with a radially outwardly protruding stop ring 122, and the stop ring 122 is used to limit the minimum installation height of the drill sleeve 20.

[0034] In the present invention, there are six petal separation claws 221, and the arc-shaped protrusions 222 inside the six petal separation claws 221 are located on the same virtual circle. It should be understood that in actual use, the number of petal separation claws 221 can also be set according to needs.

[0035] To sum up, the utility model arranges an arc-shaped protrusion on the inner side of the petal-splitting claw and an annular groove on the peripheral side of the connecting seat, so that the height of the drill sleeve can be adjusted by the cooperation of the arc-shaped protrusion and the annular groove, and at the same time, relative sliding of the drill sleeve and the drill bit during operation can be avoided, thereby ensuring that the bone remover can work stably and normally; at the same time, it can also reduce the resistance force of the side wall of the connecting seat to the petal-splitting claw, prevent the petal-splitting claw from reducing the clamping force due to elastic fatigue, and increase the service life of the bone remover.

[0036] 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 bone extractor, comprising a drill bit and a drill sleeve, characterized in that: The drill bit includes a drill rod, a connecting seat and a drill blade connected in sequence, the drill blade is provided with a bone chip receiving hole extending along the axial direction of the drill blade, the drill blade is provided with a blade tip at the upper end away from the drill rod, the drill sleeve has a bone chip receiving portion and an elastic sleeve portion, the elastic sleeve portion is provided with a plurality of split claws, the inner sides of the split claws are provided with arc-shaped protrusions, the peripheral side of the connecting seat is provided with a plurality of annular grooves corresponding to the arc-shaped protrusions, and the plurality of annular grooves are distributed along the axial direction of the connecting seat. When in use, the bone chip receiving portion is sleeved on the outer side of the drill blade, the split claws are clamped on the outer side of the connecting seat, and the arc-shaped protrusions are embedded in the corresponding annular grooves.

2. The dental implant bone extractor according to claim 1, characterized in that: The upper and lower sides of the arc-shaped protrusion are provided with connecting surfaces for facilitating the arc-shaped protrusion to slide into or out of the annular groove.

3. The dental implant bone extractor according to claim 1, characterized in that: The drill blade is symmetrically provided with arc-shaped concave surfaces on two opposite sides, the arc-shaped concave surfaces extend along the axial direction of the drill blade, and the upper ends thereof penetrate to the upper end surface of the drill blade. The bone chip accommodating hole penetrates the two arc-shaped concave surfaces along the radial direction of the drill blade. Vertical blades are formed on both sides of the bone chip accommodating hole. The upper end of the drill blade forms an arched transverse blade, and the blade tip is arranged at the middle of the transverse blade.

4. The dental implant bone extractor according to claim 1, characterized in that: The inner diameter of the elastic sleeve portion is smaller than the inner diameter of the bone scraps receiving portion.

5. The dental implant bone extractor according to claim 1, characterized in that: A gap communicating with the bone chip receiving hole is maintained between the inner surface of the bone chip receiving portion and the drill blade.

6. The dental implant bone extractor according to claim 1, characterized in that: The bone chip receiving hole is in a racetrack shape.

7. The dental implant bone extractor according to claim 1, characterized in that: The drill rod, the connecting seat and the drill blade are integrally connected and coaxially arranged.

8. The dental implant bone extractor according to claim 7, characterized in that: The outer diameter of the connecting seat is greater than the outer diameter of the drill blade.

9. The dental implant bone extractor according to claim 7, characterized in that: A stop ring protruding radially outwards is provided at one end of the connecting seat close to the drill rod.

10. The dental implant bone extractor according to claim 1, characterized in that: The arc-shaped protrusions on the inner sides of the plurality of splitting claws are located on the same virtual circle.

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