Drill for implant surgery

Abstract

Disclosed is a drill for implant surgery drill for implant surgery. The drill includes a drill connecting part having a drill top portion formed at one side of the top portion thereof, a drill fixing groove formed on the lower portion of the drill top portion, and a drill connecting body formed on the lower portion of the drill fixing groove; and a drilling part disposed on the underside of the drill connecting part and having a cylindrical shape in such a manner as to be small in diameter toward the lower portion thereof and to have a space portion formed at the inside thereof.

Claims

1. A drill for implant surgery, comprising: a drill connecting part having a drill top portion, a drill fixing groove formed on a lower portion of the drill top portion, and a drill connecting body formed on a lower portion of the drill fixing groove and extending in a first direction; and a hollow shape drilling part extending in the first direction, disposed on an underside of the drill connecting part and having a lower end portion, an upper end portion connected to and adjacent to an end portion of the drill connecting body of the drill connecting part, and a middle portion between the lower end portion and the upper end portion, and a tapered shape in such a manner as to become continuously smaller in diameter from the upper end portion of the drilling part to the lower end portion of the drilling part and to have a space portion formed at an inside of the drilling part, wherein the drilling part includes a plurality of slant side openings equally spaced apart from each other along an outer periphery of the drilling part in such a manner as to be through into the space portion formed at the inside of the drilling part, a plurality of slant side bone cutting blades formed along side edges of the plurality of slant side openings, and a toothed lower bone cutting blade formed along an end periphery of the lower end portion of the drilling part, each of the plurality of slant side bone cuffing blades being curved from the lower end portion of the drilling part toward the upper end portion of the drilling part, wherein the end periphery of the lower end portion of the drilling part is in a closed circular shape, wherein the toothed lower bone cutting blade includes a plurality of tooth-shaped blades formed along the closed circular shaped end periphery of the lower end portion of the drilling part, wherein each of the plurality of side openings is a single opening which is in a closed and elongated shape and extends from an upper portion of the drilling part adjacent to the upper end portion of the drilling part to a lower portion of the drilling part adjacent to the lower end portion of the drilling part via the middle portion of the drilling part, wherein each of the plurality of side bone cutting blades extends from the upper portion adjacent to the upper end portion of the drilling part to the lower portion adjacent to the lower end portion of the drilling part via the middle portion of the drilling part, wherein each of the number of the side openings and the number of the side bone cutting blades is 2 to 10, wherein the outer periphery of the drilling part becomes continuously smaller in diameter from the upper end portion of the drilling part to the lower end portion of the drilling part, wherein the number of the plurality of tooth-shaped blades is greater than each of the number of the side openings and the number of the side bone cutting blades, and wherein the toothed lower bone cutting blade has an inner surface and an outer surface, and each of the inner surface and the outer surface of the toothed lower bone cutting blade is in a closed circular shape when viewed from a second direction opposite to the first direction.

Description

DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a perspective view showing the whole configuration of a drill for implant surgery according to a first embodiment of the present invention.

(2) FIGS. 2A to 2C are detailed views showing the drill for implant surgery according to the first embodiment of the present invention.

(3) FIG. 3 is a perspective view showing a drill for implant surgery according to a second embodiment of the present invention.

(4) FIGS. 4A to 4C are sectional views showing the states of the use of the drill for implant surgery according to the present invention.

(5) FIGS. 5A to 5F are sectional views showing the states of the use of a drill for implant surgery in conventional practices.

BEST MODE FOR INVENTION

(6) According to the present invention, there is provided a drill for implant surgery that has a coupling structure to a handpiece for implant surgery at one side thereof and a structure of a cylindrical pipe at the other side thereof, the cylindrical pipe being provided with a lower bone cutting blade and side bone cutting blades so that the lower portion and the side surface of an alveolar bone are at the same time cut by means of drilling just one time, thereby obtaining a cylindrical autogenous bone and forming a hole for placing a tapered implant fixture, which is easier in initial fixation for the implant placement than a cylindrical implant.

(7) In more detail, the drill for implant surgery according to the present invention is structured to have a drill connecting part and a drilling part formed on the underside portion of the drill connecting part, wherein the drill connecting part has a drill top portion formed at one side of the top portion thereof, a drill fixing groove formed on the lower portion of the drill top portion, and a drill connecting body formed on the lower portion of the drill fixing groove, and the drilling part has a cylindrical shape in such a manner as to be small in diameter toward the lower portion thereof and a space portion formed at the inside thereof, the drilling part having a plurality of side piercing portions equally spaced apart from each other along the outer periphery thereof in such a manner as to be pierced into the space portion formed at the inside thereof (that is, vertically with respect to a lower bone cutting blade), a plurality of side bone cutting blades formed along one side edges of the plurality of side piercing portions, and the toothed lower bone-cutting blade formed along the end periphery of the lower portion thereof.

(8) According to the present invention, desirably, the number of side piercing portions and side bone cutting blades is 1 to 10, and more desirably, 4.

(9) The present invention relates to the drill for implant surgery that is capable of cutting just marginal bone of alveolar bone by means of the lower bone cutting blade and the side bone cutting blades, thereby at one time forming a hole for placing an implant fixture with the formation of a substantially low resistance and at the same time obtaining an autogenous bone therefrom.

(10) In the conventional practices, in the formation of an implant placement hole, an initial implant placement hole is first formed by means of a drill having a small diameter, and the hole is expanded to a desired size through the sequential cutting of the alveolar bone by means of drills having large diameters, thereby placing the implant fixture thereinto. According to the present invention, however, a drill having a desired diameter is first selected and coupled to a body (not shown), and after that, the body is fitted to a handpiece connected to a shaft of a surgery motor (not shown) and is fixed to a shaft connected to the motor. Next, if the alveolar bone is drilled by means of the drill, a circular groove is formed to remove the alveolar bone positioned at the inside thereof by means of tweezers therefrom, and the implant fixture is placed into the formed hole.

(11) The removed alveolar bone, as an autogenous bone, is used as an artificial bone needed for the implant surgery.

(12) Accordingly, the drill for implant surgery according to the present invention is used by selecting the drill having a desired diameter, coupling the drill to the drill body, fitting the drill body to the handpiece connected to the shaft of the surgery motor, fixing the drill body to the shaft connected to the motor, and drilling the alveolar bone.

(13) Hereinafter, an explanation on the drill for implant surgery will be given with reference to the attached drawings.

(14) FIG. 1 is a perspective view showing the whole configuration of a drill for implant surgery according to a first embodiment of the present invention, FIGS. 2A to 2C are detailed views showing the drill for implant surgery according to the first embodiment of the present invention, FIG. 3 is a perspective view showing a drill for implant surgery according to a second embodiment of the present invention, FIGS. 4A to 4C are sectional views showing the states of the use of the drill for implant surgery according to the present invention, and FIGS. 5A to 5F are sectional views showing the states of the use of a drill for implant surgery in conventional practices.

(15) According to the preferred embodiments of the present invention, a drill connecting part is denoted by a reference numeral 10, a drill top portion by 11, a drill fixing groove by 12, a drill connecting body by 13, drilling parts by 20 and 120, side bone cutting blades by 21 and 121, side piercing portions by 22 and 122, and lower bone cutting blades by 30 and 130.

(16) As shown in FIGS. 1 to 2C, the drill for implant surgery according to the first embodiment of the present invention includes: the drill connecting part 10 and the drilling part 20 disposed on the underside of the drill connecting part 10, wherein the drill connecting part 10 has the drill top portion 11 formed at one side of the top portion thereof, the drill fixing groove 12 formed on the lower portion of the drill top portion 11, and the drill connecting body 13 formed on the lower portion of the drill fixing groove, and the drilling part 20 has a cylindrical shape in such a manner as to be small in diameter toward the lower portion thereof and to have a space portion formed at the inside thereof, the drilling part 20 having the plurality of side piercing portions 22 equally spaced apart from each other along the outer periphery thereof in such a manner as to be pierced into the space portion formed at the inside thereof (that is, to be pierced vertically with respect to the lower bone cutting blade 30), the plurality of side bone cutting blades 21 formed along one side edges of the plurality of side piercing portions 22, and the toothed lower bone cutting blade 30 formed along the end periphery of the lower portion thereof.

(17) As shown in FIG. 3, the drill for implant surgery according to the second embodiment of the present invention includes: the drill connecting part 10 and the drilling part 20 disposed on the underside of the drill connecting part 10, wherein the drill connecting part 10 has the drill top portion 11 formed at one side of the top portion thereof, the drill fixing groove 12 formed on the lower portion of the drill top portion 11, and the drill connecting body 13 formed on the lower portion of the drill fixing groove 12, and the drilling part 120 has a cylindrical shape in such a manner as to be small in diameter toward the lower portion thereof and to have a space portion formed at the inside thereof, the drilling part 120 having the plurality of slant side piercing portions 122 equally spaced apart from each other along the outer periphery thereof in such a manner as to be pierced into the space portion formed at the inside thereof (that is, to be twistedly bent toward one side surface in the state of being vertical with respect to the lower bone cutting blade), the plurality of slant side bone cutting blades 121 formed along one side edges of the plurality of slant side piercing portions 122, and the toothed lower bone cutting blade 130 formed along the end periphery of the lower portion thereof.

(18) Next, the assembling method of the drill for implant surgery according to the present invention will be described.

(19) First, a drill for implant surgery having a desired diameter is selected, and then, the selected drill for implant surgery is fastened to the drill body to be activated by means of the drill top portion 11 and the drill fixing groove 12 of the drill connecting part 10. Next, the drill body is connected to the handpiece of a surgery motor, and if power is turned on, the drill for implant surgery is rotated through the rotation of the drill body. As a result, drilling is conducted to a desired depth by using the lower portion of the drill (See FIG. 4A), and next, the protrusion-shaped alveolar bone remaining at the center of the implant placement hole is removed by means of tweezers (See FIG. 4B), thereby completing the formation of the implant placement hole and conducting the implant surgery.

(20) While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.