KR101744113B1 - Handpiece with multi-ejecting nozzle - Google Patents

Abstract

Disclosed is a multi-injection handpiece for spraying a sufficient amount of water or air to wash off work by-products generated during operation using the handpiece. The disclosed multiprojection handpiece includes a body having a barrel portion gripped by hand and a drive shaft for performing at least one kind of movement in the inside of the barrel portion in a rotational motion and a linear reciprocating motion, A multi-injection nozzle fixed to the front end of the barrel so as not to interfere with the movement of the file, and a distal end connected to the multi-injection nozzle, the multi-injection nozzle is provided with a high-pressure water And at least one tube for supplying at least one kind of fluid of air. A plurality of injection paths are formed in the multiple injection nozzles so that the fluid supplied from the tubes is divided into a plurality of trunks and injected forward, and the fluid having passed through the plurality of injection paths is opened to be discharged to the outside of the multiple injection nozzles And a plurality of fluid ejection openings corresponding to the plurality of ejection flow paths are provided on the front face of the multiple ejection nozzles.

Description

{Handpiece with multi-ejecting nozzle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handpiece used for elaborate manual work in the fields of, for example, dental punching, dental treatment and the like.

In the fields of dental surgery and dental treatment, elaborate manual work is required, and various types of handpieces are used for various fields. Typically, the handpiece has a configuration for rotating or reciprocating a file for cutting or polishing at high speed. Further, in addition to the above-described configuration, a handpiece to which a means for injecting high-pressure water or air is further added depending on the type of work to be performed using the handpiece is known.

However, conventional handpieces having water or air jetting means are provided with only one water jetting nozzle or air jetting nozzle, so that a large amount of work-by-products such as particles, blood, It is difficult to inject water or air by precisely aiming at a point where the working byproduct is generated.

Japanese Patent Publication No. 3535509

The present invention provides a multi-injection handpiece for spraying a sufficient amount of water or air to wash work-by-products generated during operation using the handpiece.

The present invention also provides a multi-injection handpiece in which the possibility of accurately spraying water or air at a point where work-by-products are generated during an operation using the hand-piece is improved.

The present invention relates to a body having a barrel portion gripped by hand and a drive shaft for performing at least one kind of movement in the inside of the barrel portion in a rotational motion and a linear reciprocating motion, A multi-injection nozzle fixed to the front end of the barrel so as not to interfere with the movement of the file, and a distal end connected to the multiple-injection nozzle, And at least one tube for supplying at least one kind of fluid of high pressure water and air to the multi-injection nozzle, wherein the fluid supplied from the tube is split into a plurality of stems in the multi- The plurality of injection paths are formed so that the fluid that has passed through the plurality of injection paths is discharged to the outside of the multiple injection nozzles That a plurality of fluid outlet corresponding to the plurality of jet flow provides multiple injection handpiece provided in the front (前面) of the multi-jet nozzle.

The plurality of fluid ejection openings may be spaced apart from each other along a virtual circumference centered on a virtual axis extending in the longitudinal direction of the driving shaft.

Wherein at least one of the plurality of injection nozzles is provided with an internal annular flow path connected to the plurality of injection flow paths in an annular shape so as to flow therethrough, At least one tube connection opening through which the distal end of the tube is inserted is formed and the end of the tube fitted through the at least one tube connection opening can be connected to the inner annular flow path.

Wherein the multiple injection nozzle includes a cover member which surrounds the front end of the barrel and is formed with the plurality of injection paths, the plurality of fluid ejection holes, the inner annular path, and the at least one tube connection opening, And a ring member which is coupled to the cover member so as to surround the outer circumferential surface of the cover member and which seals the inner annular flow passage so as not to be opened to the outer circumferential side of the cover member.

At least one of the plurality of injection paths may be inclined so as to approach the axis toward the front.

According to the multi-injection handpiece of the present invention, a large amount of water or air is injected forward through the plurality of fluid ejection openings of the multi-injection nozzle. Therefore, it is possible to clean work-by-products such as particles, blood, and the like, which are generated during the operation.

Particularly, in the case of spraying water, since a plurality of water streams are injected through a plurality of fluid ejection openings, there is a high possibility that at least one water stream is accurately injected to a point where working byproducts such as particles and blood are generated. Accordingly, the work-by-product is washed before being diffused into a wide space and drained together with water through a drain hole, thereby preventing environmental pollution and keeping the work space using the handpiece clean.

When the multi-injection handpiece of the present invention is applied to a dental treatment or a dental work, the dental treatment and the work of the dental worker are cleaned so as not to accumulate the work by- And the work-related fatigue of dentists and dental technicians is alleviated.

Further, in the case where the multi-jetting handpiece of the present invention for spraying water is applied to dental treatment, a large amount of heat is generated in which heat generated by rubbing the teeth or the gums with the high- Because it is cooled by water, tissue necrosis due to overheating of the teeth or gums can be prevented.

1 and 2 are a front view and a side view of a multi-injection handpiece according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view cut along the line III-III of FIG. 1;
4 is a partial cutaway perspective view of part IV of Fig.

Hereinafter, a multi-injection handpiece according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

1 and 2 are a front view and a side view of a multi-injection handpiece according to an embodiment of the present invention, FIG. 3 is a cross-sectional view cut along the line III-III in FIG. 1, Partial incision perspective view. Referring to FIGS. 1 to 4 together, the multi-injection handpiece 10 according to the embodiment of the present invention is mainly used for dental treatment or dental work, and includes a body 12, a file, (30), multiple injection nozzles (40), and a tube (36).

The body 12 includes a barrel portion 13 gripped by an operator's hand, a drive shaft 25 extending in the longitudinal direction of the handpiece 10 and disposed inside the barrel portion 13, And a driving unit 20 that drives the driving unit 20 to linearly reciprocate quickly in the forward and backward directions. The lens barrel 13 has a first lens barrel 14 and a second lens barrel 17 arranged in a line along an imaginary axis SL extending in the longitudinal direction of the drive shaft 25. And the second barrel 17 is arranged in front of the first barrel 14. [

Specifically, the driving unit 20 includes: a turbine rotating at a high speed by high-pressure air introduced from a rear end of the first barrel 14; a first and a second bevel 20 rotated by the rotational force of the turbine, And a cam follower that linearly reciprocates as the cam rotates in contact with the cam and is connected to the drive shaft 25. The cam follower may be a cam follower, Respectively.

The front end portion 26 of the drive shaft 25 projects further forward than the front end portion of the barrel portion 13, specifically, the front end portion 18 of the second barrel 17. [ The pile 30 is detachably fixed to the front end 26 of the driving shaft 25 projecting outwardly of the barrel 13. [ Specifically, the pile 30 has a neck portion 33 on one side coupled to the drive shaft front end portion 26 and a sawtooth blade portion 31 on the other side. The tightening member 28 brings the neck portion 33 into close contact with the drive shaft front end portion 26 so that the neck portion 33 is not separated from the drive shaft front end portion 26. When the drive shaft 25 reciprocally reciprocates forward and backward along the axis SL in a state where the file 30 is detachably coupled to the drive shaft front end 26, So that the blade 31 cuts the work (not shown).

Meanwhile, the multi-injection hand piece 10 shown in FIGS. 1 to 4 is provided with a drive shaft 25 which reciprocates rapidly and a top-shaped pile 30 coupled thereto, but the present invention is not limited thereto For example, a drive shaft that rotates rapidly, a chuck that rotates by the rotational force of the drive shaft, and a pin or drill (not shown) that is detachably and fixedly coupled to the chuck, ) File.

The multiple injection nozzle 40 is fixed to the front end of the lens barrel 13, that is, the front end 18 of the second barrel 17, so as not to interfere with the motion of the pile 30 coupled to the drive shaft front end 26 . The tube 36 supplies high-pressure water to the multi-injection nozzle 40, and its front end 37 is connected to the back surface of the multi-injection nozzle 40 by being fitted. The tube 36 is formed of a non-bending material such as metal or plastic. The rear end 38 of the tube 36 is connected to a wheeled hose (not shown). Therefore, even if the posture and the position of the hand holding the handpiece 20 are changed, water can be continuously supplied to the multiple injection nozzle 40 through the hose and the tube 36.

The multiple injection nozzle 40 includes a cover member 41 surrounding the front end portion 18 of the second lens barrel 17 and a cover member 41 coupled to the cover member 41 so as to surround the outer circumferential surface of the cover member 41. [ And a ring member 50 which is formed of a ring-shaped member. The cover member 41 is a cap member having a through hole formed in its front surface so that the front end of the drive shaft protrudes forward of the cover member 41, A plurality of fluid ejection openings 43 are provided on the front surface of the driving shaft 25 so as to be spaced from each other at equal angular intervals along a virtual circumference CL having an axis SL of the driving shaft 25 as a center.

A plurality of jetting passages 42 are formed in the multiple jetting nozzles 40 in a rearward direction from the plurality of fluid jetting ports 43. An internal annular flow path 45 is formed to extend annularly along a circumference (not shown) centered on the axis SL and connected to the plurality of injection paths 42 in a fluid- do. A tube connection opening 47 is formed in the back surface of the multiple injection nozzle 40 so that the front end 37 of the tube 36 is inserted. The tube front end 37, which is inserted through the tube connection opening 47, is connected to the inner annular flow path 45. The plurality of injection paths 42 extend obliquely toward the axis SL toward the front.

For example, the cover member 41 may be drilled to form a plurality of fluid jetting ports 43, a plurality of jetting channels, and a tube connecting opening 47. The outer circumferential surface of the cover member 41 may be milled to form an annular groove-shaped internal annular flow passage 45 having an opened outer circumferential surface. When the cover member 41 is engaged with the cover member 41 so as to surround the outer circumferential surface of the member 41, a sealed inner annular flow path 45 is formed without being opened to the outer circumferential side of the cover member 41.

The high pressure water supplied through the tube 36 fitted in the tube connection opening 47 flows into the internal annular flow passage 45 of the multiple injection nozzle 40 and flows through the plurality of injection flow passages 42 Is divided into a plurality of water trunks in the multi-injection nozzle (40), and is injected forward through a plurality of fluid ejection openings (43). As described above, since the plurality of injection paths 42 extend obliquely, the high-pressure water ejected through the plurality of fluid ejection openings 43 is directed to the front end of the pile 30. Generally, when working with the handpiece 10, many work-related by-products are generated in the vicinity of the blade 31, so that the work-by-products that are generated in a large amount by the high-pressure water of a plurality of stems can be washed away.

On the other hand, as shown in Figs. 3 and 4, all the injection paths do not have to be inclined so as to discharge the water to the same point. For example, a part of the injection paths of the plurality of injection paths may extend obliquely so as to gradually approach the axis SL, while the other parts of the injection paths may be inclinedly extended away from the axis SL, And another part of the injection flow path may extend parallel to the axis line SL.

In the multi-injection handpiece 10 described above, since a plurality of water streams are injected through the plurality of fluid ejection openings 43, there is a high possibility that at least one water stream is accurately injected to a point where work byproducts such as particles and blood are generated . Accordingly, the work by-product is washed before being diffused into a large space, and is drained together with water through the drain hole, thereby preventing environmental pollution and keeping the work space using the handpiece 10 clean.

Unlike the above, high-pressure compressed air other than water may be supplied to the multi-injection nozzle 40 through the tube 36 and may be injected forward through a plurality of fluid ejection openings 43. Alternatively, one tube for supplying high-pressure water and another tube for supplying high-pressure compressed air are connected to the multi-injection nozzle, and one of the water and the air is selectively passed through the plurality of fluid ejection openings 43 Lt; / RTI > According to the multi-injection handpiece of the present invention, a large amount of water or air is injected forward through the plurality of fluid ejection openings of the multi-injection nozzle. Therefore, it is possible to clean work-by-products such as particles, blood, and the like, which are generated during the operation.

In addition, in the multi-injection handpiece 10 shown in FIGS. 1 to 4, the tube 36 is located outside the lens barrel 13, but the present invention is not limited thereto. And may extend in the longitudinal direction of the barrel in the inside of the barrel to be connected to the multiple-injection nozzle.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true protection of the present invention should be determined only after the appellate patent office attached.

10: multiple injection handpiece 13:
20: driving part 25: driving shaft
30: File 36: Tube
40: Multiple injection nozzle 42:
43: fluid jet port 45: internal annular flow path

Claims (5)

A body having a barrel portion gripped by a hand, and a drive shaft for performing at least one kind of movement in the inside of the barrel portion in a rotational motion and a linear reciprocating motion; A file protruding forwardly of the body by receiving a driving force of the driving shaft;
A multi-injection nozzle fixed to the front end of the barrel so as not to interfere with the movement of the file; And
And at least one tube for supplying at least one kind of fluid of high pressure water and air to the multi-injection nozzle to which the multi-injection nozzle is connected,
A plurality of injection paths are formed in the multiple injection nozzles so that the fluid supplied from the tubes is divided into a plurality of streaks and is injected forward,
Wherein a plurality of fluid ejection orifices corresponding to the plurality of ejection flow paths are provided on a front surface of the multiple ejection nozzles, wherein the plurality of fluid ejection openings are opened to eject the fluid that has passed through the plurality of ejection flow paths to the outside of the multiple ejection nozzles Multi-injection handpiece. The method according to claim 1,
Wherein the plurality of fluid ejection openings are spaced apart from each other along a virtual circumference centered on a virtual axis extending in the longitudinal direction of the drive shaft. 3. The method of claim 2,
Wherein an internal annular flow path is formed in the multi-injection nozzle so as to be connected with the plurality of injection flow paths and extends in an annular shape,
At least one tube connection opening through which the end of the at least one tube is inserted is formed on a rear surface of the multi-injection nozzle,
And an end of the tube fitted through the at least one tube connection opening is connected to the inner annular flow path. The method of claim 3,
Wherein the multiple injection nozzle includes a cover member which surrounds the front end of the barrel and is formed with the plurality of injection paths, the plurality of fluid ejection holes, the inner annular path, and the at least one tube connection opening, And a ring member coupled to the cover member so as to surround the outer circumferential surface of the cover member so as to seal the inner annular flow path so as not to open to the outer circumferential side of the cover member. 3. The method of claim 2,
Wherein at least one of the plurality of injection paths extends obliquely so as to approach the axis toward the front side.

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