CN218852866U

CN218852866U - Implant extractor set

Info

Publication number: CN218852866U
Application number: CN202222666181.4U
Authority: CN
Inventors: 董正杰
Original assignee: Shanghai Heyuan Medical Technology Co ltd
Current assignee: Shanghai Heyuan Medical Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-04-14
Anticipated expiration: 2032-10-11

Abstract

The ring saw A comprises a cylindrical first drill body, the front end of the first drill body is provided with an opening, and an annular first cutting edge is arranged along the section of the opening; the rear end of the drill body is closed, and a guide rod which axially penetrates through the inner cavity of the drill body and extends forwards is arranged; the trepan B also comprises a cylindrical second drill body, the front end of the second drill body is provided with an opening, and an annular second cutting edge is arranged at the opening. The utility model divides the guide rod and the knife edge which are originally concentrated on one implant extractor on two trepan saws to form a more practical suit; under the condition of keeping the original functions, the original mode of taking out the implant by single rotary cutting, shaking and breaking is changed into two-step cutting, and the implant can be taken out completely without breaking.

Description

Implant extractor set

Technical Field

The utility model relates to an oral dental implant surgical instrument, in particular to an implant extractor set.

Background

In dental implant surgery, sometimes, the implant needs to be taken out when the implant position is not ideal or fails. The current common way is to destroy the implant and then remove it. Destroying the implant requires the use of an implant extractor with annular serrations.

The utility model patent No. cn200920317986.X discloses a failed implant extractor, wherein a guide rod is arranged in the inner cavity of a drill body, the guide rod comprises a lead screw and a guide rod which are fixedly connected together, the lead screw is a cylinder with external threads, the guide rod is a cylindrical polished rod, and the lead screw and the guide rod are coaxially arranged; the open end of the drill body is provided with serrations. The failed implant extractor for dental treatment can conveniently extract the implant, and reduce the pain and loss of patients.

In the above scheme, the guide rod plays a role in guiding the grinding direction. However, the front end of the guide rod protrudes axially relative to the saw teeth and is blocked by the implant, so that the saw teeth cannot go deep downwards (the depth is limited by the length of the guide rod) after being ground to a certain distance, and therefore the guide rod needs to be repeatedly shaken after being ground to the tail end of the stroke, the sclerotin at the tail end of the implant is broken, and the guide rod can be taken out, which can deepen the pain of a patient on the contrary in the shaking process, easily causes new wounds, and can cause failure in taking-out operation in severe cases.

Disclosure of Invention

The utility model aims to solve the existing problems and provide an implant extractor set with simple structure and convenient use.

In order to achieve the above object, the utility model discloses a technical scheme including be used for preliminary girdling trepan A and be used for complete circular saw B of excision, wherein: the trepan A comprises a cylindrical first drill body, the front end of the first drill body is provided with an opening, and an annular first cutting edge is arranged along the section of the opening; the rear end of the drill body is closed, and a guide rod which axially penetrates through the inner cavity of the drill body and extends forwards is arranged; the trepan B also comprises a cylindrical second drill body, the front end of the second drill body is provided with an opening, and an annular second cutting edge is arranged at the opening.

Wherein, the front end of the guide rod is a spherical surface.

Wherein, the side wall of the second drill body of the trepan B is provided with a plurality of through holes.

Wherein, the outer wall of the second drill body of the trepan B is provided with scales.

Wherein, the back end of the circular saw A or the circular saw B is also respectively connected with the front end of the drill rod.

The rear end of the drill rod is detachably connected with the driving end of the electric handle.

Compared with the prior art, the utility model divides the guide rod, the cutting edge and other structures which are originally concentrated on one implant extractor on two trepan saws to form a more practical suit; under the condition of keeping the original functions, the original mode of taking out the implant by single rotary cutting, shaking and breaking is changed into two-step cutting, the implant can be taken out completely without breaking; the step of replacing tools is added in the operation, but the pain of a patient is further reduced, the new injury probability is avoided, and the excision of the implant is more complete.

Drawings

FIG. 1 is a schematic view of a trepan A;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic structural view of a trepan B;

fig. 4 is a cross-sectional view of an embodiment of the present invention;

referring to the drawings, a first blade 1, a guide rod 2, a drill rod 3, a first drill body 4, a through hole 5, a second blade 6 and a second drill body 7.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, fig. 1 to 4 show an embodiment of the present invention, which mainly includes a ring saw a and a ring saw B. For convenience of description, the following text will be referred to as anterior with reference to the direction pointing toward the implant along the medial axis.

Referring to fig. 1 and 2, the trepan a includes a cylindrical first drill body, and a cavity is formed inside the first drill body; the front end of the first drill body is an opening, and an annular first cutting edge is arranged along the section of the opening, namely the first cutting edge is 1.5mm high in tooth height in circular arrangement, and the included angle of a sawtooth edge is 30 degrees. The rear end of the first drill body is closed, a drill handle is fixedly connected to the rear end face of the rear end, and the drill handle is detachably connected with a driving end (not shown in the figure) of an electric handle of a surgical instrument and provides circumferential rotation power for the trepan A. Referring to fig. 2, a guide rod coaxial with the drill body is arranged in the hollow drill body of the trepan A, penetrates through the inner cavity of the drill body from the closed rear end of the drill body, extends forwards and protrudes forwards relative to the first blade; the outer wall of the guide rod is preferably smooth, the diameter of the guide rod is matched with the central screw hole of the implant, and the guide rod can play a role in guiding the rotary cutting direction of the trepan A; referring to fig. 1, the guide rod in this embodiment has a diameter of 1.5mm, and the front end thereof is preferably a spherical surface having a diameter of 0.5mm. Trephine a was used for preliminary ring cutting, i.e. removal of peri-implant osseointegration at a height of about 2mm of the neck of the implant.

Referring to fig. 3 and 4, the second hollow drill body of the trepan B is also cylindrical, and a through hole is formed in the wall of the cylinder; the outer wall of the trepan B drill body is preferably provided with corresponding scale gradients which are set according to different models of the implants so as to be convenient for an operator to observe visually. The rear end of the second drill body is closed, and the front end of the second drill body is provided with an opening; the rear end of the second drill body is fixedly connected with a drill rod which is used for being connected with an electric surgical instrument and providing circumferential rotation power for the trepan B. The open front end of the trepan B is also provided with cutting teeth (sawteeth), after the trepan A is used for removing the osseointegration of the neck of the implant, the trepan A can be replaced, and the primary trepan track of the trepan A is used for continuously removing the whole osseointegration of the side of the implant downwards.

When the circular saw is used, firstly, the shoulder of the implant is fully exposed, then the central sealing screw is removed, and the circular saw A with the guide rod is matched into the central/central screw hole of the implant. While spraying water, the saw teeth at the front end of the circular saw A with the guide rod are used for cutting around 2mm of bone tissues around the implant at the neck of the implant.

After the preliminary ring-cutting is completed, the ring saw A is replaced by the ring saw B. While spraying water, utilizing a blade at the front end of a drill body of the trepan B to carry out rotary cutting to plant surrounding bone tissues until the cutting depth is equivalent to the planting depth of the failed implant, and stopping cutting; the implant can now be easily removed directly. The circular saw B is guided by the circular saw A, so that the circular cutting is not biased.

Compared with the prior art, the embodiment has the advantages that one is disassembled into two, the pain of a patient is further reduced in the step-by-step operation, the new injury probability is avoided, and the implant is completely cut off.

The embodiments of the present invention have been described in conjunction with the accompanying drawings and examples, the structures of which are not intended to limit the present invention, and those skilled in the art can make modifications as required, and all changes and modifications within the scope of the appended claims are within the scope of protection.

Claims

1. Implant extractor suit, its characterized in that: including trepan A and trepan B, wherein: the trepan A comprises a cylindrical first drill body, the front end of the first drill body is provided with an opening, and an annular first cutting edge is arranged along the section of the opening; the rear end of the drill body is closed, and a guide rod which axially penetrates through the inner cavity of the drill body and extends forwards is arranged;

the trepan B also comprises a cylindrical second drill body, the front end of the second drill body is provided with an opening, and an annular second cutting edge is arranged at the opening.

2. The implant extractor kit of claim 1, wherein: the front end of the guide rod is a spherical surface.

3. The implant extractor kit of claim 1 wherein: the side wall of the second drill body of the trepan B is provided with a plurality of through holes.

4. The implant extractor kit of claim 1, wherein: scales are arranged on the outer wall of the second drill body of the trepan B.

5. The implant extractor kit of any one of claims 1 to 4, wherein: the rear end of the circular saw A or the circular saw B is also connected with the front end of the drill rod respectively.

6. The implant extractor kit of claim 5, wherein: the rear end of the drill rod is detachably connected with the driving end of the electric handle.