Bone removing drill for periphery of implant

Abstract

The utility model provides a boning drill for the periphery of an implant, which relates to oral instruments and comprises a drill rod, a boning rod, a boning rod and a boning rod, and one end of the drill rod is provided with a transmission part fixed on a dental handpiece; the tool bit is arranged at the other end of the drill rod, a containing cavity is formed in the axial direction of the tool bit, a ball head unit is arranged in the containing cavity, and the ball head unit comprises a ball head body; and one end of the movable pin is provided with a protruding part located outside the containing cavity, the other end of the movable pin is provided with a ball cup located in the containing cavity, and the ball body is connected with the ball cup in a spherical hinge mode. According to the implant, the effect that the ball head body and the ball head seat can rotate relatively is utilized, transmission between the ball head body and the ball head seat is cut off, the working state that the tool bit rotates but the movable pin does not rotate is formed, and threads in the implant are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to an oral appliance, in particular to a bone removal drill around an implant. Background Art

[0002] The implant peripheral bone removal drill is a drill commonly used in oral implant bone trimming surgery, including a drill rod, a cutter head and a fixing pin. The side and front end faces of the cutter head are respectively provided with angled side blades and tapered broken blades. The fixing pin is fixed at the center of the front end face of the cutter head to play a role in positioning and supporting.

[0003] When in use, the positioning pin needs to be inserted into the threaded hole in the implant for positioning, and then the dental mobile phone is turned on to drive the drill rod to rotate at high speed. At this time, the fixing pin rotates in the implant driven by the drill rod, causing friction with the implant, damaging the thread in the implant, and affecting the subsequent implant assembly. Utility Model Content

[0004] The utility model provides an implant peripheral bone removal drill, which aims to solve the problem that the existing bone removal drill easily causes wear to the thread in the implant during the bone removal process.

[0005] In order to achieve the above-mentioned object, an embodiment of the utility model provides an implant peripheral bone removal drill, comprising:

[0006] A drill rod, one end of which is provided with a transmission part for fixing on a dental handpiece;

[0007] A cutter head is arranged at the other end of the drill rod, and an accommodating cavity is formed in the axial direction of the cutter head. A ball head unit is arranged in the accommodating cavity, and the ball head unit includes a ball head body;

[0008] The movable pin has a protrusion formed on one end and located outside the accommodating cavity, and a ball head seat formed on the other end and located inside the accommodating cavity, and the ball head body and the ball head seat are connected by a ball joint.

[0009] Preferably, the ball head unit further comprises a connecting portion, the ball head body is arranged at one end of the connecting portion, and the other end of the connecting portion is fixed in the accommodating cavity.

[0010] Preferably, the ball head unit further comprises a connecting portion, the ball head body is arranged at one end of the connecting portion, and the other end of the connecting portion is passed through the cutter head and connected to the drill rod.

[0011] Preferably, the connecting portion and the drill rod are threadedly connected.

[0012] Preferably, front blades and side blades are respectively provided on the front end face and side faces of the cutter head, the number of the front blades and the side blades are the same and they are connected one-to-one, a front chip groove is formed between the front blades, and a side chip groove is formed between the side blades.

[0013] Preferably, the movable pin further comprises a body portion, and the ball head seat and the protrusion are respectively arranged on both sides of the body portion;

[0014] The front end of the cutter head is recessed toward the transmission part and forms a shoulder with the side wall of the accommodating cavity. The diameter of the shoulder is smaller than the diameter of the cutter head. The diameter of the main body is smaller than the diameter of the shoulder. The main body is accommodated in the space where the shoulder is located.

[0015] Preferably, the protrusion includes at least one level of protrusions, and the diameter of each level of protrusions decreases in a direction away from the transmission part.

[0016] Preferably, the front end of the protrusion farthest from the transmission part is rounded.

[0017] Preferably, the drill rod and the cutter head are both cylinders, and the protrusion and the ball head seat are both cylinders.

[0018] Preferably, the drill rod is provided with an expanded diameter portion at one end away from the transmission portion, and the expanded diameter portion is connected to the cutter head.

[0019] The above solution of the utility model has the following beneficial effects:

[0020] In the present application, the relative rotation between the ball head body and the ball head seat is utilized to cut off the transmission between the ball head body and the ball head seat, forming a working state in which the cutter head rotates but the movable pin does not rotate, thereby avoiding damage to the thread in the implant.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 is a cross-sectional view of an embodiment;

[0024] Figure 3 is a cross-sectional view of another embodiment.

[0025] [Description of Reference Numerals]

[0026] 1-drill rod, 11-transmission part, 12-expansion part,

[0027] 2-cutter head, 21-ball head body, 22-connecting part, 23-front blade, 24-side blade, 25-shoulder,

[0028] 3-movable pin, 31-protrusion, 32-ball head seat, 33-main body, 311-protrusion. DETAILED DESCRIPTION

[0029] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1-3 As shown, an embodiment of the utility model provides a bone removal drill around an implant, comprising a drill rod 1, a cutter head 2 and a movable pin 3. The drill rod 1 is a cylinder, and a transmission part 11 is arranged at one end of the drill rod 1. The transmission part 11 is used to be installed on a dental mobile phone, and the drill rod 1 is driven to rotate around the rotary axis of the drill rod 1 by the dental mobile phone. The cutter head 2 is arranged at the other end of the drill rod 1, and is used to cut the bone around the implant. A receiving cavity is formed on the front end surface of the cutter head 2, and the receiving cavity is recessed along the axial direction of the cutter head 2. A ball head unit is arranged on the wall surface of the receiving cavity at one end close to the transmission part 11, and the ball head unit includes a ball head body 21. The movable pin 3 has a protrusion 31 formed at one end and a ball head seat 32 formed at the other end, wherein the ball head seat 32 is located in the receiving cavity, the protrusion 31 is located outside the receiving cavity, and the ball head seat 32 is connected to the ball head body 21 by a ball joint.

[0031] When using the present application, the raised portion 31 is abutted against the implant, and then the drill rod 1 drives the cutter head 2 to rotate to cut the bone around the implant. Since the movable pin 3 and the cutter head 2 are connected by a ball joint, the ball head body 21 rotates with the cutter head 2, while the ball head seat 32 cannot rotate with the ball head body 21, thereby cutting off the transmission between the ball head seat 32 and the ball head body 21, and the movable pin 3 connected to the ball head seat 32 does not rotate, thereby ensuring that the movable pin 3 plays a supporting and positioning role, and will not cause wear to the thread in the implant due to rotation.

[0032] In the first embodiment of the present application, the ball head unit further includes a connecting portion 22 , the ball head body 21 is disposed at one end of the connecting portion 22 , and the other end of the connecting portion 22 is fixed on a wall surface of the accommodating cavity near one end of the transmission portion 11 .

[0033] In the second embodiment of the present application, the ball head unit also includes a connecting part 22, the ball head body 21 is arranged at one end of the connecting part 22, the other end of the connecting part 22 is penetrated through the wall surface of the accommodating cavity close to one end of the transmission part 11, and the end of the connecting part 22 that penetrates through the wall surface is connected to the drill rod 1.

[0034] Preferably, one end of the connecting portion 22 is threadedly connected to the screw rod.

[0035] The second embodiment of the present application adopts a screw connection to facilitate the replacement of the drill rod 1 and the cutter head 2.

[0036] Furthermore, a front blade 23 and a side blade 24 are respectively provided on the front end face and the side face of the cutter head 2. The front blades 23 and the side blades 24 are the same in number and are connected one-to-one. A front chip groove is formed between the front blades 23, and a side chip groove is formed between the side blades 24.

[0037] Furthermore, the movable pin 3 includes a main body 33, which is cylindrical, and the aforementioned ball head seat 32 and the raised portion 31 are respectively arranged on both sides of the main body 33;

[0038] The front end of the cutter head 2 is recessed toward the transmission part 11 , and a shoulder 25 is formed on the cutter head 2 . The diameter of the shoulder 25 is smaller than the diameter of the cutter head 2 . The diameter of the main body 33 is smaller than the diameter of the shoulder 25 . The main body 33 is accommodated in the space where the shoulder 25 is located.

[0039] Furthermore, the ball joint seat is a hollow cylinder, and the length of the ball joint seat along the axial direction of the drill rod 1 is greater than the length of the ball head body 21, so that the ball head body 21 can slide a certain distance along the axial direction of the drill rod 1 in the ball joint seat, which is about 0.3 mm.

[0040] Further, the protrusion 31 includes at least one level of protrusion 311, and the diameter of each level of protrusion 311 decreases in the direction away from the transmission part 11. In this embodiment, two levels of protrusions 311 are provided. The protrusion 311 farthest from the transmission part 11 is rounded to make the surface of the protrusion 311 smooth to avoid cutting the tissue in the oral cavity during operation.

[0041] Preferably, an expansion portion 12 is provided at one end of the short rod away from the transmission portion 11 , and the diameter of the expansion portion 12 is larger than the diameter of the drill rod 1 and smaller than the diameter of the cutter head 2 . The drill rod 1 and the cutter head 2 are connected via the expansion portion 12 .

[0042] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The implant peripheral bone removal drill is characterized by: include: A drill rod (1) having a transmission part (11) at one end thereof for fixing on a dental handpiece; A cutter head (2) is arranged at the other end of the drill rod (1), and an accommodating cavity is formed in the axial direction of the cutter head (2), a ball head unit is arranged in the accommodating cavity, and the ball head unit includes a ball head body (21); The movable pin (3) has a protruding portion (31) located outside the accommodating cavity formed at one end and a ball head seat (32) located inside the accommodating cavity formed at the other end, and the ball head body (21) and the ball head seat (32) are connected by a ball joint.

2. The implant peripheral bone removal drill according to claim 1, characterized in that: The ball head unit also includes a connecting portion (22), the ball head body (21) is arranged at one end of the connecting portion (22), and the other end of the connecting portion (22) is fixed in the accommodating cavity.

3. The implant peripheral bone removal drill according to claim 1, characterized in that: The ball head unit also includes a connecting portion (22), the ball head body (21) is arranged at one end of the connecting portion (22), and the other end of the connecting portion (22) is passed through the cutter head (2) and connected to the drill rod (1).

4. The implant peripheral bone removal drill according to claim 3, characterized in that: The connection portion (22) and the drill rod (1) are threadedly connected.

5. The implant peripheral bone removal drill according to claim 1, characterized in that: A front blade (23) and a side blade (24) are respectively arranged on the front end face and the side face of the cutter head (2); the number of the front blades (23) and the side blades (24) are the same and they are connected one by one; a front chip removal groove is formed between the front blades (23) and a side chip removal groove is formed between the side blades (24).

6. The implant peripheral bone removal drill according to claim 1, characterized in that: The movable pin (3) further comprises a main body (33), and the ball head seat (32) and the protruding portion (31) are respectively arranged on both sides of the main body (33); The front end of the cutter head (2) is recessed in the direction of the transmission part (11) and forms a shoulder (25) with the side wall of the accommodating cavity. The diameter of the shoulder (25) is smaller than the diameter of the cutter head (2). The diameter of the main body (33) is smaller than the diameter of the shoulder (25). The main body (33) is accommodated in the space where the shoulder (25) is located.

7. The implant peripheral bone removal drill according to claim 1, characterized in that: The protrusion (31) comprises at least one level of protrusions (311), and the diameter of each level of protrusions (311) decreases in a direction away from the transmission part (11).

8. The implant peripheral bone removal drill according to claim 7, characterized in that: The front end of the protrusion (311) farthest from the transmission part (11) is rounded.

9. The implant peripheral bone removal drill according to claim 7, characterized in that: The drill rod (1) and the cutter head (2) are both cylinders, and the protrusion (311) and the ball head seat (32) are both cylinders.

10. The implant peripheral bone removal drill according to claim 1, characterized in that: The drill rod (1) is provided with an expanded diameter portion (12) at one end away from the transmission portion (11), and the expanded diameter portion (12) is connected to the cutter head (2).

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