CN212395071U - Dental root canal therapy uses curved hand machine - Google Patents

Abstract

A dental root canal treatment bender comprises a handpiece and a rear cover device, wherein the surface of the dental root canal treatment bender is provided with an insulating coating; the rear cover device is detachably connected with the machine head and is positioned on one side of the machine head; the insulating coating is coated on the surface of the dental root canal treatment bender; the insulating coating is made of aluminum oxide or Teflon or ceramic paint or resin or diamond-like carbon coating. The dental bender for dental root canal treatment forms an integral scheme of a dental bender which is internally conductive, surface-insulated, compact in structure, small in height and convenient to maintain and is initiated by the industry, can accurately, safely and stably realize the function of measuring the length of a root canal, further realizes the two-in-one function of stable root canal preparation and root canal length measurement combination, has a compact integral structure, provides a good visual field, and reduces the risk of instrument separation or preparation steps of a doctor in the operation process.

Description

Dental root canal therapy uses curved hand machine

Technical Field

The utility model relates to a dental medical instrument field especially relates to a dental root canal therapy uses curved hand piece.

Background

There are the inside conducting structure (the structure diverse) of multiple dental root canal therapy curved hand machine on the market at present, also have multiple surface insulation scheme, to the aircraft nose back cap position that needs press and carry out centre gripping root canal file, for realizing insulating while to the less purpose of height dimension control, also have different structures. Finally, to dentistry elbow machine overall structure, realize simultaneously that inside electrically conductive adds under the prerequisite of surface insulation plus-minus aircraft nose back lid height dimension (also insulating), the fastening mode of connecting between each subassembly is non-detachable basically, if adopt screw thread to add glue fastening's mode etc. inconvenient use back washing, even can not maintain.

The existing dental root canal treatment bender has the defects of unstable conductivity, easy failure or complex structure and difficult maintenance during operation; some products are externally connected with a conductive structure, so that the appearance is large, the visual field is not good, the risk of instrument separation or preparatory steps of a doctor in the operation process is increased, and the operation safety is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dental root canal treatment curved handpiece, which aims to solve the problems that the dental root canal treatment curved handpiece in the prior art has unstable conductivity, easy failure or complex structure and difficult maintenance during operation; some products are externally connected with a conductive structure, so that the appearance is large, the visual field is not good, the risk of instrument separation or preparatory steps of a doctor in the operation process is increased, and the technical problem of low operation safety is caused.

In order to achieve the purpose, the dental root canal therapy curved hand piece comprises a head and a rear cover device, wherein the surface of the dental root canal therapy curved hand piece is provided with an insulating coating; the rear cover device is detachably connected with the machine head and is positioned on one side of the machine head; the insulating coating is coated on the surface of the dental root canal treatment bender; the insulating coating is made of aluminum oxide or Teflon or ceramic paint or resin or diamond-like carbon coating.

Wherein, dental root canal therapy still includes detachable device and elasticity electric installation with the curved cell-phone, detachable device with the connection can be dismantled to the aircraft nose, elasticity electric installation with the connection can be dismantled to the aircraft nose, and be located one side of aircraft nose.

The rear cover device comprises a rear cover bearing seat, a rear cover button, a spreading ring, a spring and a rear cover support body, wherein the rear cover bearing seat is fixedly connected with the machine head and is positioned on one side of the machine head; the rear cover button is connected with the rear cover support body in a sliding manner, is positioned in the rear cover support body, and partially extends out of the rear cover support body; the opening ring is fixedly connected with the rear cover button and is positioned on one side of the rear cover button; one end of the spring is abutted with the rear cover button, the other end of the spring is abutted with the rear cover bearing seat and is positioned between the rear cover bearing seat and the rear cover button; the back lid supporter with back lid bearing frame joint, and with back lid button sliding connection, and be located back lid bearing frame is close to one side of back lid button.

The detachable device comprises a machine core, a first-stage transmission shaft, a jacking inclined block, an input gear box cover, a second-stage transmission shaft and a machine head tail end cover, wherein the machine core is rotatably connected with the machine head and is positioned on one side of the machine head; the first-stage transmission shaft is fixedly connected with the machine head, one end of the first-stage transmission shaft is in meshing transmission with the machine core and is positioned in the machine head; the jacking inclined block is abutted against the first-stage transmission shaft, sleeved on the periphery of the first-stage transmission shaft and positioned at one end of the first-stage transmission shaft, which is far away from the machine core; the input gear box cover is abutted against the jacking inclined block, is detachably connected with the machine head tail end cover and is positioned on one side of the machine head tail end cover, which is far away from the machine head; the second-stage transmission shaft is rotatably connected with the input gearbox cover, meshed with the first-stage transmission shaft and positioned inside the input gearbox cover; the machine head tail end cover is detachably connected with the machine head and is positioned on one side of the machine head, which is far away from the machine core.

The elastic conductive device comprises a shaft core and a conductive elastic sheet, the shaft core is rotatably connected with the machine core and is positioned in the machine core, one end of the conductive elastic sheet is elastically abutted against the shaft core, the other end of the conductive elastic sheet is fixedly connected with the first-stage transmission shaft and is positioned between the first-stage transmission shaft and the shaft core.

The number of the conductive elastic sheets is one or more, and the conductive elastic sheets respectively surround the circumference of the first-stage transmission shaft.

The rear cover bearing seat, the rear cover support body and the rear cover button are made of insulating materials.

The jacking inclined block is provided with an inclined surface, and the inclined surface is positioned on one side, close to the input gearbox cover, of the jacking inclined block.

The detachable device further comprises a screw, wherein the screw is detachably connected with the machine head tail end cover, detachably connected with the input gear box cover and located between the machine head tail end cover and the input gear box cover.

The elastic conducting device further comprises a limiting clamp, wherein the limiting clamp is fixedly connected with the conducting elastic sheet, is abutted against the shaft core and is positioned on one side, close to the shaft core, of the conducting elastic sheet.

The utility model discloses a dental root canal treatment uses the curved hand piece, dental root canal treatment uses the curved hand piece and has formed the whole scheme of the first internal electricity conduction of trade, surface insulation, compact structure height is small, the dental curved hand piece of convenient maintenance, can be accurate, safety, stable realization root canal length measurement function, and then realize stable root canal preparation, the two unification functions that root canal length measurement combines, and overall structure is compact and provides good field of vision, reduce the doctor and take place the risk that the instrument separation perhaps takes place to prepare the step in operation process, it has very big guarantee to promote the security. The convenient maintenance of dismantling, abluent scheme reduces cross infection's risk, has further increased this utility model's safety in utilization, convenience effect, has very big market benefit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the internal conductive path of the present invention.

Fig. 2 is a schematic view of the connection structure of the first-stage transmission shaft and the second-stage transmission shaft of the present invention.

Fig. 3 is a schematic structural view of the jacking sloping block of the present invention.

Fig. 4 is a schematic structural diagram of the conductive device of the present invention.

Fig. 5 is an exploded view of the first shape conductive clip according to the present invention.

Fig. 6 is a schematic view of a connection structure of the first-shaped conductive elastic piece of the present invention.

Fig. 7 is an exploded view of a second shape conductive elastic piece according to the present invention.

Fig. 8 is a schematic view of a connection structure of a second shape conductive elastic piece according to the present invention.

Fig. 9 is a schematic structural view of the rear cover device of the present invention.

In the figure: 1-root canal file, 2-machine head, 3-insulating device, 4-detachable device, 31-machine core, 32-first-stage transmission shaft, 33-abutting inclined block, 34-machine head tail end cover, 35-input gear box cover, 36-second-stage transmission shaft, 37-elastic conducting device, 38-rear cover device, 39-screw, 40-insulating coating, 100-dental root canal therapy curved hand piece, 331-inclined plane, 371-shaft core, 372-conducting elastic piece, 373-limit clip, 381-rear cover bearing seat, 382-rear cover supporting body, 383-rear cover button, 384-support ring, 385-spring and 3831-groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In a first example of the present embodiment:

referring to fig. 1 to 9, the present invention provides a dental endodontic handpiece 100, including a handpiece 2 and a rear cap unit 38, wherein an insulating coating 40 is provided on a surface of the dental endodontic handpiece 100; the rear cover device 38 is detachably connected with the machine head 2 and is positioned at one side of the machine head 2; the insulation coating 40 is coated on the surface of the dental endodontic handpiece 100; the insulating coating 40 is made of alumina, teflon, ceramic paint, resin or diamond-like carbon (DLC).

Further, the dental endodontic bender 100 further includes a detachable device 4 and an elastic conductive device 37, the detachable device 4 is detachably connected to the handpiece 2, and the elastic conductive device 37 is detachably connected to the handpiece 2 and is located on one side of the handpiece 2.

Further, the rear cover device 38 includes a rear cover bearing seat 381, the rear cover button 383, a spreader ring 384, a spring 385 and a rear cover support 382; the rear cover bearing block 381 is fixedly connected with the machine head 2 and is positioned at one side of the machine head 2; the rear cover button 383 is slidably connected with the rear cover support 382, is positioned inside the rear cover support 382, and partially extends out of the rear cover support 382; the opening ring 384 is fixedly connected with the rear cover button 383 and is positioned on one side of the rear cover button 383; one end of the spring 385 abuts against the rear cover button 383, the other end abuts against the rear cover bearing seat 381, and the spring is positioned between the rear cover bearing seat 381 and the rear cover button 383; the rear cover support 382 is clamped to the rear cover bearing seat 381, is slidably connected to the rear cover button 383, and is located on one side of the rear cover bearing seat 381 close to the rear cover button 383.

Further, the detachable device 4 comprises a movement 31, a first-stage transmission shaft 32, a jacking inclined block 33, an input gear box cover 35, a second-stage transmission shaft 36 and a machine head tail end cover 34, wherein the movement 31 is rotatably connected with the machine head 2 and is positioned on one side of the machine head 2; the first-stage transmission shaft 32 is fixedly connected with the machine head 2; one end of the first-stage transmission shaft 32 is in meshed transmission with the movement 31 and is positioned inside the machine head 2; the jacking inclined block 33 is abutted against the first-stage transmission shaft 32, sleeved on the periphery of the first-stage transmission shaft 32 and positioned at one end, far away from the movement 31, of the first-stage transmission shaft 32; the input gear box cover 35 is abutted against the abutting inclined block 33, is detachably connected with the machine head tail end cover 34, and is positioned on one side of the machine head tail end cover 34 far away from the machine head 2; the second-stage transmission shaft 36 is rotatably connected with the input gearbox cover 35, is meshed with the first-stage transmission shaft 32, and is positioned inside the input gearbox cover 35; the head tail end cover 34 is detachably connected with the head 2 and is positioned on one side of the head 2 far away from the movement 31.

Further, the elastic conductive device 37 includes a shaft core 371 and a conductive elastic sheet 372, the shaft core 371 and the core 31 are rotatably connected and located inside the core 31, one end of the conductive elastic sheet 372 is elastically abutted to the shaft core 371, and the other end is fixedly connected to the first-stage transmission shaft 32 and located between the first-stage transmission shaft 32 and the shaft core 371.

In this embodiment, the inside of the shaft core 371 is connected with the expander-root canal file 1 in the individual root canal apparatus, the root canal file 1 is connected and fixed with the shaft core 371 through the clamping device, the conductive elastic sheet 372 is installed on the primary transmission shaft 32, the conductive elastic sheet 372 has elasticity, and clamps the shaft core 371 through smaller elastic deformation, and closely contacts with the shaft core 371 (similar to a brush), so as to realize the stable conduction of the circuit from the primary transmission shaft 32 to the shaft core 371, in operation, the shaft core 371 performs the rotation motion, the conductive elastic sheet 372 clamps the shaft core 371, at this moment, the conductive elastic sheet 372 closely contacts with the shaft core 371, so that the circuit conduction circuit of the elastic conductive device 37 is: the first-stage transmission shaft 32 is connected to the shaft core 371 through the conductive elastic sheet 372, wherein the conductive elastic sheet 372 which is in direct contact with the shaft core 371 is installed on the first-stage transmission shaft 32, and by using parts of the original structure of a product, an external conductive circuit is not required to be added, so that the structure is simple and the conductivity is stable; because plastics can realize insulation, the rear cover bearing seat 381, the rear cover support 382 and the rear cover button 383 are made of insulating materials, the spring 385 and the opening ring 384 are made of metal materials, the opening ring 384 is used for opening a needle clamping piece matched with the shaft core 371 when being pressed in actual use, and therefore the function of releasing and taking out the clamped root canal file 1 is achieved, the spring 385 and the opening ring 384 are made of metal materials, the wear resistance and the surface smoothness can be improved, the service life is prolonged, and the friction loss is reduced; when the elastic conductive device 37 is assembled, the movement 31 is firstly installed in the machine head 2, the primary transmission shaft 32 is inserted into the machine head 2 from the large hole end of the machine head 2, then the jacking inclined block 33 is sleeved in the primary transmission shaft, the machine head tail end cover 34 is sleeved in the primary transmission shaft, and finally the input gearbox cover 35 is sleeved in the primary transmission shaft, because the input gearbox cover 35 is provided with external threads, the inner hole of the machine head 2 on the corresponding side of the input gearbox cover 35 is provided with internal threads, the end surface of the input gearbox cover 35 is jacked on the inclined surface of the jacking inclined block 33, and the jacking inclined block 33 is jacked and fixed. The surface of the insulating device 3 (including the handpiece 2, the rear cover button 383, the rear cover supporter 382 and the handpiece tail end cover 34) utilizes the insulating (non-conducting) property of materials such as alumina, teflon, ceramic paint, resin, diamond-like carbon (DLC) and the like, wherein the diamond-like carbon forms a DLC coating (DLC) on the surface of the insulating device 3, and forms a protective film with an insulating function on the surface of a shell. The conductive elastic piece 372 comprises a connecting part and a butting part, and the connecting part is fixedly connected with the butting part. The abutting part abuts against the outer wall of the shaft core 371, and the shaft core 371 is pressed tightly through elastic deformation, so that the conductive elastic sheet 372 is stably connected with the shaft core 371 and conducts electricity; the connecting part is fixedly connected with the first-stage transmission shaft 32. The number of the conductive elastic pieces 372 can be up and down or left and right symmetrically configured by 2, or independently configured by 1, and the like. Alternatively, the rear cover button 383 and the rear cover supporter 382 in the rear cover device 38 may be made of plastic material, so as to meet the requirement of the insulating device 3, and the opening ring of the rear cover device 38 is made of metal material. Different materials of plastics and metal are mutually matched, so that the insulating effect is achieved, and the height can be reduced (the metal material is used for meeting the service life of pressing and unfolding). The spring 385 can be completely hidden in the groove 3831 of the back cover button 383, so that the back cover button 383 and the end surface of the back cover bearing seat 381 can be completely attached without a gap, and thus, the circuit of the shaft core 371, the conductive elastic sheet 372 and the primary transmission shaft 32 is conducted, so that the electric conductivity of the root canal file 1 is stable during operation, the root canal length measurement function is accurate, and a stable two-in-one function is realized: the root canal length measurement is carried out while the root canal preparation is carried out by using the root canal therapeutic apparatus, meanwhile, the structure is compact, the maintenance is convenient, the internal electric conduction is smaller than that of the externally-hung handpiece 2, the operation visual field is facilitated, the risk of instrument separation or preparation step generation in the operation process of a doctor can be reduced, and the safety is greatly improved; meanwhile, the input gearbox cover 35 is screwed with the machine head 2 through threads, and the first-stage transmission shaft 32 is fixed through the jacking inclined block 33, so that the purposes of assembly, disassembly and maintenance are achieved; the insulating coating 40 is coated on the outer side surfaces of the head 2, the back cover supporter 382, the back cover button 383 and the head tail end cover 34, and a protective film with an insulating function is formed on the surface by utilizing the non-conductivity of alumina or the non-conductivity of Teflon, ceramic paint, resin, diamond-like carbon coating (DLC) and the like, so as to achieve the purpose of insulation, thus the dental root canal therapy bender 100 forms an integral scheme which is initiated by the industry and has the advantages of internal conductivity, surface insulation, compact structure, small height and small volume, and is convenient to maintain, can accurately, safely and stably realize the function of measuring the length of a root canal, further realizes the two-in-one function of combining stable root canal preparation and root canal length measurement, has the compact integral structure, provides a good visual field, and reduces the risk of instrument separation or preparation steps of a doctor in the operation process, the safety is greatly improved. The convenient maintenance of dismantling, abluent scheme reduces cross infection's risk, has further increased this utility model's safety in utilization, convenience effect, has very big market benefit.

Further, referring to fig. 5 to 8, the number of the conductive elastic pieces 372 is one or more, and the conductive elastic pieces respectively surround a circumference of the first-stage transmission shaft 32.

Further, referring to fig. 7 and 8, the elastic conductive device 37 further includes a limiting clip 373, and the limiting clip 373 is fixedly connected to the conductive elastic piece 372, abuts against the shaft core 371, and is located at a side of the conductive elastic piece 372 close to the shaft core 371.

In this embodiment, the number of the conductive elastic pieces 372 may be 2 in a vertical or horizontal symmetrical configuration, or may be 1 in a single configuration, and by increasing the number of the conductive elastic pieces 372, the limiting clamp 373 may clamp both sides of the outer circumference of the shaft core 371, thereby improving the stability of the electrical conduction.

Further, the rear cover bearing block 381, the rear cover support 382, and the rear cover button 383 are made of an insulating material.

In this embodiment, the back cover bearing seat 381, the back cover supporter 382, and the back cover button 383 do not necessarily need to be made of an insulating material, but may be made of an insulating material or have an insulating coating on the surface thereof to achieve the function of isolating and insulating the internal conductive part from the exterior of the dental handpiece, but the present insulating material is an economical and feasible solution.

Further, referring to fig. 3, the inclined pushing block 33 has an inclined surface 331, and the inclined surface 331 is located on a side of the inclined pushing block 33 close to the input gearbox cover 35.

Further, referring to fig. 1, the detachable device 4 further includes a screw 39, and the screw 39 is detachably connected to the head end cover 34, detachably connected to the input gearbox cover 35, and located between the head end cover 34 and the input gearbox cover 35.

In this embodiment, after the end surface of the input gear box cover 35 is pressed against the inclined surface of the pressing inclined block 33 to press and fix the pressing inclined block 33, the screw 39 is screwed into the threaded hole of the head/tail end cover 34 to fix the input gear box cover 35.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The dental root canal therapy bender is characterized by comprising a handpiece and a rear cover device, wherein the surface of the dental root canal therapy bender is provided with an insulating coating;

the rear cover device is detachably connected with the machine head and is positioned on one side of the machine head;

the insulating coating is coated on the surface of the dental root canal treatment bender; the insulating coating is made of aluminum oxide or Teflon or ceramic paint or resin or diamond-like carbon coating.

2. The dental endodontic bender according to claim 1,

the dental root canal therapy is with curved cell-phone still includes detachable device and elasticity electric installation, detachable device with the connection can be dismantled to the aircraft nose, elasticity electric installation with the connection can be dismantled to the aircraft nose, and be located one side of aircraft nose.

3. The dental endodontic bender according to claim 1,

the rear cover device comprises a rear cover bearing seat, a rear cover button, a spreading ring, a spring and a rear cover support body, wherein the rear cover bearing seat is fixedly connected with the machine head and is positioned on one side of the machine head; the rear cover button is connected with the rear cover support body in a sliding manner, is positioned in the rear cover support body, and partially extends out of the rear cover support body; the opening ring is fixedly connected with the rear cover button and is positioned on one side of the rear cover button; one end of the spring is abutted with the rear cover button, the other end of the spring is abutted with the rear cover bearing seat and is positioned between the rear cover bearing seat and the rear cover button; the back lid supporter with back lid bearing frame joint, and with back lid button sliding connection, and be located back lid bearing frame is close to one side of back lid button.

4. The dental endodontic bender according to claim 2,

the detachable device comprises a machine core, a first-stage transmission shaft, a jacking inclined block, an input gear box cover, a second-stage transmission shaft and a machine head tail end cover, wherein the machine core is connected with the machine head in a rotating mode and is positioned on one side of the machine head, the first-stage transmission shaft is fixedly connected with the machine head, one end of the first-stage transmission shaft is in meshed transmission with the machine core and is positioned inside the machine head, the jacking inclined block is abutted against the first-stage transmission shaft and sleeved on the periphery of the first-stage transmission shaft and positioned at one end of the first-stage transmission shaft, which is far away from the machine core, the input gear box cover is abutted against the jacking inclined block and is detachably connected with the machine head tail end cover and is positioned on one side of the machine head tail end cover, the second-stage transmission shaft is rotatably connected with the input gear box cover and is meshed with, and is located inside the input gearbox cover; the machine head tail end cover is detachably connected with the machine head and is positioned on one side of the machine head, which is far away from the machine core.

5. The dental endodontic bender according to claim 4 wherein,

the elastic conductive device comprises a shaft core and a conductive elastic sheet, the shaft core is rotatably connected with the machine core and is positioned in the machine core, one end of the conductive elastic sheet is elastically abutted against the shaft core, the other end of the conductive elastic sheet is fixedly connected with the first-stage transmission shaft and is positioned between the first-stage transmission shaft and the shaft core.

6. The dental endodontic bender according to claim 5 wherein,

the number of the conductive elastic sheets is one or more, and the conductive elastic sheets respectively surround the circumference of the first-stage transmission shaft.

7. The dental endodontic bender according to claim 3 wherein,

the rear cover bearing seat, the rear cover supporting body and the rear cover button are made of insulating materials.

8. The dental endodontic bender according to claim 4 wherein,

the jacking inclined block is provided with an inclined surface, and the inclined surface is positioned on one side, close to the input gearbox cover, of the jacking inclined block.

9. The dental endodontic bender according to claim 4 wherein,

the detachable device further comprises a screw, and the screw is detachably connected with the machine head tail end cover, detachably connected with the input gear box cover and located between the machine head tail end cover and the input gear box cover.

10. The dental endodontic bender according to claim 5 wherein,

the elastic conducting device further comprises a limiting clamp, wherein the limiting clamp is fixedly connected with the conducting elastic sheet, is abutted against the shaft core and is positioned on one side, close to the shaft core, of the conducting elastic sheet.

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