CN113069225A - Vacuum tube interface device for sucking dental handpiece wastewater under negative pressure - Google Patents
Vacuum tube interface device for sucking dental handpiece wastewater under negative pressure Download PDFInfo
- Publication number
- CN113069225A CN113069225A CN202110256856.5A CN202110256856A CN113069225A CN 113069225 A CN113069225 A CN 113069225A CN 202110256856 A CN202110256856 A CN 202110256856A CN 113069225 A CN113069225 A CN 113069225A
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- groove
- dental handpiece
- connector
- negative pressure
- vacuum tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/0061—Air and water supply systems; Valves specially adapted therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
Abstract
The invention discloses a vacuum tube interface device for sucking dental handpiece wastewater under negative pressure, which adopts the technical scheme that the vacuum tube interface device comprises a cover body and a connector for connecting a vacuum tube and a dental handpiece, wherein one end of the cover body is hinged on the connector, the other end of the cover body is provided with a first extension plate, the bottom surface of the first extension plate is provided with a limiting groove for limiting the dental handpiece, and the top end of the connector is provided with an insertion groove for inserting the head of the dental handpiece. The invention has the following beneficial effects: close the lid on the top surface of connector, the spacing dental handpiece in the chamber that holds that forms through standing groove and spacing groove, start vacuum negative pressure draw-out device at last, form the negative pressure through the vacuum tube, utilize the mode of negative pressure extraction to clear up the waste water in the dental handpiece to the maintenance and the thorough disinfection of dental handpiece, when can effectively preventing to wash the dental handpiece, all kinds of pathogens and cooling water form aerosol dispersion in the consulting room environment, prevent cross infection.
Description
Technical Field
The invention relates to a connecting device, in particular to a vacuum tube interface device for sucking wastewater of a dental handpiece under negative pressure.
Background
In the process of dental diagnosis and treatment, a dental high-speed turbine handpiece is in close contact with saliva, blood, gingival crevicular fluid and dental plaque of a patient, so that the surface of the dental high-speed turbine handpiece, turbine components in a handpiece and various pipelines can be polluted by pathogenic microorganisms to different degrees. Especially, the negative pressure generated at the moment that the high-speed turbine handpiece stops rotating can cause exogenous pathogenic microorganisms to be left on the inner wall of the narrow cavity of the dental handpiece, so that the exogenous pathogenic microorganisms are easy to deposit and finally form a biological film gradually. Therefore, after the dental handpiece is used, the internal cavity pipeline needs to be washed in time to prevent the formation of a biological film. The dental handpiece drives the turbine to rotate through positive air pressure, and during the flushing process, various pathogens and cooling water can form aerosol which is dispersed and floated in the environment of a consulting room, so that environmental pollution and the risk of cross infection are caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a vacuum tube interface device for sucking the wastewater of a dental handpiece under negative pressure, which can effectively prevent various pathogens and cooling water from forming aerosol and dispersing in the environment of a doctor room when the dental handpiece is washed, thereby preventing cross infection.
In order to achieve the purpose, the invention provides the following technical scheme: a vacuum tube interface device for sucking the waste water of dental handpiece under negative pressure comprises a cover body and a connector for connecting the vacuum tube with the dental handpiece, one end of the cover body is hinged on the connector, the other end of the cover body is provided with a first extension plate, the bottom surface of the first extension plate is provided with a limit groove for limiting the dental handpiece, the bottom surface of the cover body is provided with a cover groove for limiting the back of the head of the dental handpiece, the top end of the connector is provided with an insertion groove for inserting the head of the dental handpiece and a second extension plate arranged in the same direction as the first extension plate, the top surface of the second extension plate is provided with a placement groove for placing the body of the dental handpiece, the placement groove is communicated with the insertion groove and is arranged corresponding to the limit groove, the bottom surface of the connector is provided with a plug for connecting with the vacuum tube and is provided with a negative pressure hole communicated with the insertion groove, when the cover body covers the connecting head, the bottom surface of the cover body is in contact with the top surface of the connecting head, and the placing groove and the limiting groove form an accommodating cavity matched with the dental handpiece so as to limit the dental handpiece.
The invention is further configured to: be provided with first hinge pin and second hinge pin on the side of connector, be provided with the clearance between first hinge pin and the second hinge pin, and coaxial setting, be provided with first hinge hole on the first hinge pin, be provided with the second hinge hole on the second hinge pin, one of lid serves and is provided with the third hinge pin, the third hinge pin inserts the clearance, and be provided with the third hinge and connect the hole, still including the articulated shaft, the articulated shaft passes first hinge hole in proper order, third hinge connects hole and second hinge hole, so that the lid articulates on the connector.
The invention is further configured to: the plug is including first spacing ring and second spacing ring, and the external diameter of first spacing ring is less than the internal diameter of second spacing ring to the setting is provided with between the outer wall of first spacing ring and the inner wall of first spacing ring and is used for supplying vacuum tube male annular, and the lower extreme of first spacing ring is less than the lower extreme of second spacing ring to communicate with the negative pressure hole, and the outer wall of second spacing ring is big-end-up's conical surface.
The invention is further configured to: the lid groove is vertical in the cylindrical recess of lid bottom surface, and the spacing groove is the recess of transversal personally submitting the rectangle to along the length direction setting of first extension plate, the spacing groove extends to the lid, in order to lead to mutually with the lid groove, the standing groove sets up along the length direction of second extension plate, and extends to the connector, in order to be linked together with the insertion groove, and the side of the equal both sides of spacing groove and standing groove leans out.
The invention is further configured to: a locking device is arranged on the side surface of the connector, the locking device comprises a mounting seat, the mounting seat is fixedly connected on the side surface of the connector and is provided with a mounting hole and a chute, the mounting hole is communicated with the chute, the mounting hole is slidably connected with a fixed rod and is provided with a clamping groove, the side surface of the cover body is fixedly connected with a connecting seat, the connecting seat is provided with a connecting hole, the upper end of the fixed rod is provided with a connecting shaft, the lower end of the fixed rod is connected with a compression spring, the lower end of the compression spring is connected on the bottom surface of the mounting hole, the connecting shaft is matched with the connecting hole and is rotatably connected with the connecting hole, the side surface of the fixed rod is provided with an elastic plate, the elastic plate extends downwards, the lower end of the elastic plate is provided with a clamping block, the fixed block is fixedly connected to the fixed rod.
The invention is further configured to: the fixed block is provided with the spacing groove, and the spacing groove is used for supplying the elastic plate to pass to spacing with the elastic plate, the slider is provided with the slide opening, and slide opening sliding connection has the pressure lever, and the slide opening is passed to the one end of pressing the lever, and connects on the elastic plate.
In conclusion, the invention has the following beneficial effects: after the dental handpiece is cleaned, an operator firstly connects the vacuum tube on the vacuum negative pressure extraction device with the plug, then puts the head of the dental handpiece into the insertion groove, places the body of the dental handpiece on the placement groove, covers the cover body on the top surface of the connector, locks the cover body by the locking device, limits the head of the dental handpiece by the insertion groove and the cover groove, limits the body of the dental handpiece by the containing cavity formed by the placement groove and the limiting groove, finally starts the vacuum negative pressure extraction device, forms negative pressure by the vacuum tube, cleans up waste water and aerosol in the dental handpiece by using a negative pressure water pumping mode, is convenient for maintenance and thorough disinfection of the dental handpiece, and can effectively prevent aerosol formed by various pathogens and cooling water from being dispersed in a diagnosis room environment to prevent cross infection when the dental handpiece is flushed.
Drawings
FIG. 1 is a schematic perspective view of a vacuum tube interface device for negative pressure suction of dental handpiece wastewater;
FIG. 2 is a schematic view of a connection structure of a vacuum tube interface device for negative pressure suction of wastewater from a dental handpiece;
fig. 3 is a schematic view illustrating a coupling structure of a hinge shaft;
FIG. 4 is a schematic view of the connection structure of the locking device;
fig. 5 is an enlarged view a of fig. 4.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1-5, a vacuum tube interface device for negative pressure suction of dental handpiece wastewater, comprising a cover body 2 and a connector 1 for connecting the vacuum tube with a dental handpiece, one end of the cover body 2 is hinged on the connector 1, and the other end is provided with a first extension plate 21, the bottom surface of the first extension plate 21 is provided with a limit groove 22 for limiting the dental handpiece, the bottom surface of the cover body 2 is provided with a cover groove 23 for limiting the back surface of the head of the dental handpiece, the top end of the connector 1 is provided with an insertion groove 11 for inserting the head of the dental handpiece and a second extension plate 12 arranged in the same direction with the first extension plate 21, the top surface of the second extension plate 12 is provided with a placement groove 13 for placing the body of the dental handpiece, the placement groove 13 is communicated with the insertion groove 11 and is arranged corresponding to the limit groove 22, the bottom surface of the connector 1 is provided with a plug 3, and a negative pressure hole 15 communicated with the insertion groove 11 is arranged, a locking device 5 for locking the cover body 2 is arranged on the side surface of the connector 1, when the cover body 2 covers the connector 1, the bottom surface of the cover body 2 is contacted with the top surface of the connector 1, and the placing groove 13 and the limiting groove 22 form an accommodating cavity 14 matched with the dental handpiece so as to limit the dental handpiece.
By the proposal, after the dental handpiece is cleaned, an operator firstly connects the vacuum tube on the vacuum negative pressure extraction device with the plug 3, then puts the head of the dental handpiece into the insertion groove 11, and the body of the dental handpiece is placed on the placing groove 13, the cover body 2 is covered on the top surface of the connecting head 1, the locking device 5 locks the cover body 2, the insertion groove 11 and the cover groove 23 limit the head of the dental handpiece, the body of the dental handpiece is limited by the containing cavity 14 formed by the placing groove 13 and the limiting groove 22, and finally the vacuum negative pressure extraction device is started, negative pressure is formed through the vacuum tube, waste water and aerosol in the dental handpiece are cleaned up in a negative pressure water pumping mode, so as to be convenient for the maintenance and the thorough disinfection of the dental handpiece, and can effectively prevent various pathogens and cooling water from forming aerosol to be dispersed in the environment of a doctor room when the dental handpiece is washed, thereby preventing cross infection.
As a modified specific embodiment, a first hinge rod 41 and a second hinge rod 42 are disposed on a side surface of the connector 1, a gap 422 is disposed between the first hinge rod 41 and the second hinge rod 42, and the first hinge rod 41 and the second hinge rod 42 are coaxially disposed, a first hinge hole 411 is disposed on the first hinge rod 41, a second hinge hole 421 is disposed on the second hinge rod 42, a third hinge rod 43 is disposed on one end of the cover 2, the third hinge rod 43 is inserted into the gap 422 and is provided with a third hinge hole 431, and a hinge shaft 44 is further included, and the hinge shaft 44 sequentially passes through the first hinge hole 411, the third hinge hole 431 and the second hinge hole 421, so that the cover 2 is hinged on the connector 1.
Through the above scheme, the first hinge rod 41 and the second hinge rod 42 limit the third hinge rod 43, so that the cover body 2 is connected more stably. Through the manner that the hinge shaft 44 is respectively in interference connection with the first hinge hole 411, the third hinge hole 431 and the second hinge hole 421, the cover body 2 is not easy to shake when in use.
As a modified specific embodiment, the plug 3 includes a first limiting ring 31 and a second limiting ring 32, the outer diameter of the first limiting ring 31 is smaller than the inner diameter of the second limiting ring 32 and is disposed inside the second limiting ring 32, an annular groove 33 for inserting a vacuum tube is disposed between the outer wall of the first limiting ring 31 and the inner wall of the first limiting ring 31, the lower end of the first limiting ring 31 is lower than the lower end of the second limiting ring 32 and is communicated with the negative pressure hole 15, and the outer wall of the second limiting ring 32 is a conical surface with a large top and a small bottom.
Through the scheme, the first limiting ring 31 is convenient to insert into the vacuum tube, the second limiting ring 32 is matched with the first limiting ring 31 to clamp and fix the vacuum tube, the annular groove 33 is convenient to insert the vacuum tube, the vacuum tube is limited, the connection is tight and not easy to loosen, the negative pressure is stable, and the leakage is not easy.
As a specific embodiment of the improvement, the cover groove 23 is a cylindrical groove vertical to the bottom surface of the cover body 2, the limiting groove 22 is a groove with a rectangular cross section and is disposed along the length direction of the first extension plate 21, the limiting groove 22 extends toward the cover body 2 to communicate with the cover groove 23, the placing groove 13 is disposed along the length direction of the second extension plate 12 and extends toward the connecting head 1 to communicate with the insertion groove 11, and the side surfaces of both sides of the limiting groove 22 and the placing groove 13 are inclined outward.
Through the scheme, the cover groove 23 is matched with the dental handpiece to further limit the head of the dental handpiece, and the limiting groove 22 and the placing groove 13 are correspondingly arranged to limit the body of the dental handpiece, so that the dental handpiece is convenient to place and use. Thereby the side of both sides leans out the fuselage of laminating dental handpiece to strengthen spacing effect.
As a modified specific embodiment, a locking device 5 is installed on a side surface of the connecting head 1, the locking device 5 includes a mounting seat 51, the mounting seat 51 is fixedly connected to a side surface of the connecting head 1, and is provided with a mounting hole 511 and a sliding slot 512, the mounting hole 511 is communicated with the sliding slot 512, the mounting hole 511 is slidably connected with a fixing rod 52, and is provided with a slot 513, a connecting seat 24 is fixedly connected to a side surface of the cover body 2, a connecting hole 241 is provided on the connecting seat 24, an upper end of the fixing rod 52 is provided with a connecting shaft 521, a lower end of the fixing rod 52 is connected with a compression spring 53, a lower end of the compression spring 53 is connected to a bottom surface of the mounting hole 511, the connecting shaft 521 is adapted to the connecting hole 241 and is rotatably connected to the connecting hole 241, an elastic plate 54 is arranged on a side surface of the fixing rod 52, the, so as to fix the fixing rod 52, the sliding groove 512 is slidably connected with the sliding block 55, one end of the sliding block 55 is provided with a fixing block 551, the other end of the sliding block 55 extends out of the sliding groove 512, and the fixing block 551 is fixedly connected on the fixing rod 52.
Through the above scheme, after dental handpiece placed, compression spring 53 promoted dead lever 52 and moves outside mounting hole 511 to drive connecting seat 24 and lid 2 and rotate around the pin joint, make lid 2 closely cover and close on connector 1, convenient to use continues to exert pressure through compression spring 53, makes lid 2 and connector 1 connect closely, is difficult not hard up. After the negative pressure suction is completed, the slider 55 is moved downwards to drive the connecting seat 24 and the cover body 2 to rotate around the hinge point, so that the cover body 2 is lifted from the connecting head 1, the dental handpiece can be taken out conveniently, and the operation is convenient and easy. And the fixture block 541 is driven to be inserted into the slot 513 to fix the fixing rod 52 without applying force to the slider 55, so as to prevent the cover 2 from being closed again and keep the cover 2 in the opened state.
As a modified embodiment, the fixing block 551 is provided with a limiting groove 552, the limiting groove 552 is used for the elastic plate 54 to pass through and limit the elastic plate 54, the slider 55 is provided with a sliding hole 553, the sliding hole 553 is connected with a pressing rod 554 in a sliding way, one end of the pressing rod 554 passes through the sliding hole 553 and is connected on the elastic plate 54
Through the scheme, the pressing rod 554 is pressed to drive the elastic plate 54 to deform, so that the clamping block 541 is separated from the clamping groove 513, the compression spring 53 pushes the fixing rod 52 to move towards the outside of the mounting hole 511, and the use is convenient. The limiting groove 552 limits the elastic plate 54, so that the elastic plate 54 is prevented from being excessively popped outwards, and the structure is kept stable.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. A vacuum tube interface device for sucking dental handpiece waste water under negative pressure is characterized in that: comprises a cover body (2) and a connector (1) used for connecting a vacuum tube and a dental handpiece, one end of the cover body (2) is hinged on the connector (1), the other end of the cover body is provided with a first extension plate (21), the bottom surface of the first extension plate (21) is provided with a limit groove (22) used for limiting the dental handpiece, the bottom surface of the cover body (2) is provided with a cover groove (23) used for limiting the back surface of the head of the dental handpiece, the top end of the connector (1) is provided with an insertion groove (11) used for inserting the head of the dental handpiece and a second extension plate (12) arranged in the same direction with the first extension plate (21), the top surface of the second extension plate (12) is provided with a placing groove (13) used for placing the body of the dental handpiece, the placing groove (13) is communicated with the insertion groove (11) and is arranged corresponding to the limit groove (22), the bottom surface of connector (1) is provided with plug (3) that are used for being connected with the vacuum tube to be provided with negative pressure hole (15) that are linked together with insertion groove (11), the side-mounting of connector (1) has locking device (5) that are used for locking lid (2), when lid (2) lid closes on connector (1), the bottom surface of lid (2) contacts with the top surface of connector (1), standing groove (13) and spacing groove (22) form and hold chamber (14) with dental handpiece looks adaptation, with spacing dental handpiece.
2. The vacuum tube interface device for negative pressure suction of dental handpiece waste water according to claim 1, wherein: be provided with first articulated rod (41) and second articulated rod (42) on the side of connector (1), be provided with clearance (422) between first articulated rod (41) and second articulated rod (42) to coaxial setting, be provided with first hinge hole (411) on first articulated rod (41), be provided with second hinge hole (421) on second articulated rod (42), one of lid (2) is served and is provided with third hinge pole (43), third hinge pole (43) insert clearance (422) to be provided with third hinge hole (431), still including articulated shaft (44), articulated shaft (44) pass first hinge hole (411), third hinge hole (431) and second hinge hole (421) in proper order to make lid (2) articulate on connector (1).
3. The vacuum tube interface device for negative pressure suction of dental handpiece waste water according to claim 2, wherein: negative pressure hole (15) and plug (3) coaxial arrangement, plug (3) are including first spacing ring (31) and second spacing ring (32), the external diameter of first spacing ring (31) is less than the internal diameter of second spacing ring (32) to the setting is in the inboard of second spacing ring (32), be provided with between the outer wall of first spacing ring (31) and the inner wall of first spacing ring (31) and be used for supplying vacuum tube male annular (33), the lower extreme of first spacing ring (31) is less than the lower extreme of second spacing ring (32) to be linked together with negative pressure hole (15), the outer wall of second spacing ring (32) is big-end-up's conical surface down.
4. The vacuum tube interface device for negative pressure suction of wastewater of dental handpieces as claimed in claim 3, wherein: lid groove (23) are vertical in the cylindrical recess of lid (2) bottom surface, spacing groove (22) are the recess of transversal personally submitting the rectangle to length direction along first extension plate (21) sets up, spacing groove (22) extend to lid (2), communicate with each other with lid groove (23), standing groove (13) set up along the length direction of second extension plate (12) to extend to connector (1), be linked together with insertion groove (11), the side of the equal both sides of spacing groove (22) and standing groove (13) leans out.
5. The vacuum tube interface device for sucking the wastewater of the dental handpiece under the negative pressure as claimed in any one of claims 1 to 4, which is characterized in that: the locking device (5) comprises a mounting seat (51), the mounting seat (51) is fixedly connected to the side face of the connector (1) and provided with a mounting hole (511) and a sliding groove (512), the mounting hole (511) is communicated with the sliding groove (512), the mounting hole (511) is connected with a fixing rod (52) in a sliding manner and is provided with a clamping groove (513), the side face of the cover body (2) is fixedly connected with a connecting seat (24), the connecting seat (24) is provided with a connecting hole (241), the upper end of the fixing rod (52) is provided with a connecting shaft (521), the lower end of the fixing rod (52) is connected with a compression spring (53), the lower end of the compression spring (53) is connected to the bottom face of the mounting hole (511), the connecting shaft (521) is matched with the connecting hole (241) and is rotatably connected with the connecting hole (241), the side face of the fixing rod (52) is provided with, the fixing rod (52) is fixed through the sliding block (55), the fixing block (551) is arranged at one end of the sliding block (55), the other end of the sliding block (55) extends out of the sliding groove (512), and the fixing block (551) is fixedly connected to the fixing rod (52).
6. The vacuum tube interface device for negative pressure suction of wastewater of dental handpieces as claimed in claim 5, wherein: the fixing block (551) is provided with a limiting groove (552), the limiting groove (552) is used for allowing the elastic plate (54) to pass through and limiting the elastic plate (54), the sliding block (55) is provided with a sliding hole (553), the sliding hole (553) is connected with a pressing rod (554) in a sliding mode, and one end of the pressing rod (554) passes through the sliding hole (553) and is connected to the elastic plate (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110256856.5A CN113069225B (en) | 2021-03-09 | 2021-03-09 | Vacuum tube interface device for sucking dental handpiece wastewater under negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110256856.5A CN113069225B (en) | 2021-03-09 | 2021-03-09 | Vacuum tube interface device for sucking dental handpiece wastewater under negative pressure |
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| Publication Number | Publication Date |
|---|---|
| CN113069225A true CN113069225A (en) | 2021-07-06 |
| CN113069225B CN113069225B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110256856.5A Active CN113069225B (en) | 2021-03-09 | 2021-03-09 | Vacuum tube interface device for sucking dental handpiece wastewater under negative pressure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201350129Y (en) * | 2009-02-12 | 2009-11-25 | 王树峰 | Dental multipurpose therapy unit with self-suction dental turbine handpiece |
| CN105342711A (en) * | 2015-12-15 | 2016-02-24 | 咸阳西北医疗器械(集团)有限公司 | Porous negative pressure type cooling structure used for dental handpiece |
| CN105380718A (en) * | 2015-12-21 | 2016-03-09 | 咸阳西北医疗器械(集团)有限公司 | Dust prevention structure for dental handpiece |
| WO2017206298A1 (en) * | 2016-05-31 | 2017-12-07 | 北京东博气动工具有限公司 | Zero suckback devices for high-speed turbine dental drill handpiece |
| CN110301989A (en) * | 2019-08-13 | 2019-10-08 | 广东精美医疗科技有限公司 | A kind of high speed air-driven turbine dental handpiece of anti-resorption |
-
2021
- 2021-03-09 CN CN202110256856.5A patent/CN113069225B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201350129Y (en) * | 2009-02-12 | 2009-11-25 | 王树峰 | Dental multipurpose therapy unit with self-suction dental turbine handpiece |
| CN105342711A (en) * | 2015-12-15 | 2016-02-24 | 咸阳西北医疗器械(集团)有限公司 | Porous negative pressure type cooling structure used for dental handpiece |
| CN105380718A (en) * | 2015-12-21 | 2016-03-09 | 咸阳西北医疗器械(集团)有限公司 | Dust prevention structure for dental handpiece |
| WO2017206298A1 (en) * | 2016-05-31 | 2017-12-07 | 北京东博气动工具有限公司 | Zero suckback devices for high-speed turbine dental drill handpiece |
| CN110301989A (en) * | 2019-08-13 | 2019-10-08 | 广东精美医疗科技有限公司 | A kind of high speed air-driven turbine dental handpiece of anti-resorption |
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| Publication number | Publication date |
|---|---|
| CN113069225B (en) | 2022-02-08 |
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