CN109820605A - A kind of contra-angle handpiece and root canal preparation machine of conductive sheet convenient for safeguarding - Google Patents
A kind of contra-angle handpiece and root canal preparation machine of conductive sheet convenient for safeguarding Download PDFInfo
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- CN109820605A CN109820605A CN201910272899.5A CN201910272899A CN109820605A CN 109820605 A CN109820605 A CN 109820605A CN 201910272899 A CN201910272899 A CN 201910272899A CN 109820605 A CN109820605 A CN 109820605A
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Abstract
The invention discloses a kind of contra-angle handpiece of conductive sheet convenient for safeguarding and root canal preparation machines, it includes handpiece case, removably nose cover and cutting element, cartridge assemblies and conductive sheet are removably connected in the handpiece case, the cartridge assemblies include machine core turbine and drive the shaft of rotation by machine core turbine, the shaft is supported in handpiece case by bearing part, bearing part includes preceding end bearing and rear end bearing, and the cutting element is fixed in shaft and the one end far from nose cover that is pierced by handpiece case；In the handpiece case that the conductive sheet is mounted by conductive base, the turning circuit being connected with cutting element is formed between the handpiece case, shaft, conductive sheet and conductive base.Contra-angle handpiece and its root canal preparation machine of the invention has contra-angle handpiece rotatable, and the effect that the conductive sheet in contra-angle handpiece is detachable and interchangeable.
Description
Technical field
The present invention relates to dental therapeutic apparatus fields, particularly, are related to the contra-angle handpiece and root of a kind of conductive sheet convenient for safeguarding
Manage pre- standby host.
Background technique
At present it is known that having a kind of equipment to can be carried out canalis radicis dentis smelting treats and be completed at the same time canalis radicis dentis measurement, used is a cut-away
Tool, such as file or dental drill, it also serves as measurement probe.In this case, since cut-away tool is used as root canal length measurement
One electrode of circuit, measuring signal need to send cutting element to.
Turning circuit is integrated and is fixed on inside head by some contra-angle handpieces with measure the root canal length function, by conductive sheet
Test signal can be transmitted to cut-away tool.But since long-time spin friction can be on the ground that contact of the conductive sheet with shaft rubs
Side generates impurity, and shaft and conductive sheet poor contact is caused to influence test signal transmitting.And it is fixed in head due to integrated
Portion, the problem of causing maintenance difficult.
Summary of the invention
An object of the present invention is to provide a kind of contra-angle handpiece of conductive sheet convenient for safeguarding, has easy access, convenient for more
The advantages of changing maintenance conductive sheet.
Above-mentioned purpose of the invention has the technical scheme that
A kind of contra-angle handpiece of conductive sheet convenient for safeguarding, including handpiece case, removably nose cover and cutting element, the head
Cartridge assemblies and conductive sheet are removably connected in shell, the cartridge assemblies include machine core turbine and driven by machine core turbine
The shaft of rotation, the shaft are supported in handpiece case by bearing part, and bearing part includes preceding end bearing and rear end bearing, institute
Cutting element is stated to be fixed in shaft and the one end far from nose cover that is pierced by handpiece case；
In the handpiece case that the conductive sheet is mounted by conductive base, the handpiece case, shaft, conductive sheet and conduction
The turning circuit being connected with cutting element is formed between pedestal.
By using above-mentioned technical proposal, when needing to carry out measure the root canal length, handpiece case, conductive sheet, is led shaft
This four metal parts of electric pedestal will form turning circuit and measuring signal be transmitted to cutting element.Conductive sheet is detachably connected
On handpiece case, when needing to safeguard, conductive sheet can be taken out and be safeguarded or replaced, it is very convenient.
Further, the conductive base is set as semi-annular shape, and the conductive base outer wall is provided with longitudinal strip, institute
It states handpiece case inner wall and is provided with limit card slot for longitudinal strip grafting, the conductive base passes through longitudinal strip and limiting card
Slot is plugged and fixed in handpiece case, and the conductive sheet is detachably connected on conductive base.
By using above-mentioned technical proposal, the setting of longitudinal strip and limit card slot realizes the fixation of conductive base, with
Prevent conductive base from deflecting displacement.
Further, the conductive sheet is set as U-shaped elastic piece structure, and the conductive sheet includes that fixed part and two pins connect
Socket part, the fixed part are detachably secured on conductive base, and the spacing of two pin connections is less than the outer diameter of shaft,
Two pin connections, which are encircled, is fitted in shaft outer wall.
By using above-mentioned technical proposal, the distance of conductive sheet both ends pin connection is smaller than shaft diameter, needs when assembly
Conductive sheet is big, then since conductive sheet natural resiliency conductive sheet can tightly be adjacent to shaft.The structure is simple, is easily installed.
Further, the U-shaped card frame of opening upwards, the fixed part card of the conductive sheet are provided at the top of the conductive base
It connects in U-shaped card frame, there are two the locating piece for limiting conductive sheet displacement, two positioning for the fixed part bottom wall setting
Block is embedded respectively in the two sides of U-shaped card frame bottom wall.
By using above-mentioned technical proposal, the setting of U-shaped card frame facilitates the installation of conductive sheet, and the setting of locating piece is reduced
The possibility that conductive sheet level offsets.
Further, the socket passed through for two pin connections is provided on the conductive base, the conductive sheet
Fixed part inner wall fitting be fixed on shaft outer wall, two pin connections of the conductive sheet pass through from outside to inside socket and with
Shaft contacts；
It is provided with the mounting hole for conductive sheet dismounting on the handpiece case, is embedded with conductive sheet lid in the mounting hole, it is described
Conductive sheet, which covers, is equipped with screw, and the screw sequentially passes through conductive sheet lid and conductive sheet and fixes with conductive base.
By using above-mentioned technical proposal, the dismounting that the setting of mounting hole facilitates conductive sheet is safeguarded, and conductive sheet lid
It is arranged then for realizing the pressuring action to conductive sheet, and to the plugging action of mounting hole, reduces the impurity edges such as extraneous dust
Mounting hole enters the possibility of handpiece case, and then reduces the possibility of cartridge assemblies corrosion damage, extends making for cartridge assemblies
Use the service life.When needing to safeguard, we can be backed out screw by straight screwdriver, then remove conductive sheet lid, so that it may will
Conductive sheet taking-up is safeguarded or is replaced, very convenient not need very professional tool, simple and convenient.
Further, the nose cover is threaded on handpiece case, and the preceding end bearing bottom is provided with Corrugation pad
Piece.
By using above-mentioned technical proposal, the setting of corrugated gasket is to prevent bearing axial runout.
In conclusion the invention has the following advantages:
1. using dismountable conductive sheet, when needing to safeguard, screw can be backed out to remove and led by we by straight screwdriver
Then conductive sheet can be taken out and be safeguarded or replaced by electric piece lid, very convenient not need very professional tool；
2. the distance at conductive sheet both ends is smaller than shaft diameter, when assembly conduction brush is supportted it is big, then due to conductive sheet natural resiliency
Conductive sheet can tightly be adjacent to shaft, and the structure is simple, processing easy to produce, and realize Fast Installation.
It is a further object of the present invention to provide a kind of root canal preparation machines, have contra-angle handpiece rotatable, convenient for operation, comfort
Good advantage.
Above-mentioned purpose of the invention has the technical scheme that
A kind of root canal preparation machine, including head master unit and above-mentioned contra-angle handpiece, between the contra-angle handpiece and head master unit
It is connected by cylindrical portion, the contra-angle handpiece is inserted into cylindrical portion and connect with cylindrical portion locating rotation；
The cylindrical portion includes pedestal, shell, rotary socket and provides the O-ring of damping due to rotation, and the pedestal is coaxially fixed
Inside the shell, one end of the rotary socket axial direction is rotatably connected on one end inner wall of pedestal, and the other end passes through contact pin and bender
Head connection, the O-ring are set on rotary socket and between rotary socket and pedestal.
By using above-mentioned technical proposal, contra-angle handpiece can any angle turn in cylindrical portion, inserting on head when rotation
Needle drives rotary socket rotation, and damping when rotation is provided by O-ring.The structure is simple, and can be realized multi-angle regulation,
Different holding postures is adapted to, it is very convenient.
Further, the pedestal is embedded with several balls far from one end outer wall of shell, and the contra-angle handpiece protrudes into pedestal
Interior one end is provided with annular groove, and base inner wall is passed through on the inside of the ball and rolling is connected in annular groove, the contra-angle handpiece passes through
Annular groove and ball are connect with cylindrical portion locating rotation.
By using above-mentioned technical proposal, when installation, now contra-angle handpiece is embedded in pedestal, is then embedded in circular hole again
Ball, then the positioning to ball, easy for installation, maintenance easy to disassemble are realized with baffle ring.
In conclusion the invention has the following advantages:
It is made of contact pin, O-ring, rotary socket, shell, pedestal.Contact pin has four, and when connection is inserted in four on rotary socket
Slot, the rotatable any angle of contra-angle handpiece, contact pin when rotation on head drive rotary socket rotation, and damping when rotation is by O
Type circle provides.Since rotary socket is not completely fixed extremely, can inside be rotated around the axle center of oneself, contra-angle handpiece is by inserting
Needle is connected on rotary socket, so contra-angle handpiece is not fixed, can also be rotated around the axle center of rotary socket.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment 1.
Fig. 2 is the schematic diagram of the section structure of embodiment 1.
Fig. 3 is the partial enlargement diagram of part A in Fig. 2.
Fig. 4 is the perspective view of the explosion that embodiment 1 is used to embody conductive sheet connection relationship.
Fig. 5 is the perspective view of the explosion that embodiment 2 is used to embody conductive sheet connection relationship.
Fig. 6 is the perspective view of the explosion that embodiment 2 is used to embody conductive sheet Yu conductive base connection relationship.
Fig. 7 is the perspective view of the explosion that embodiment 3 is used to embody contra-angle handpiece and cylindrical portion connection relationship.
Fig. 8 is the perspective view of the explosion that embodiment 3 is used to embody cylindrical portion structure.
Fig. 9 is the schematic diagram of the section structure that embodiment 3 is used to embody cylindrical portion.
In figure, 1, handpiece case；11, nose cover；12, limit card slot；13, mounting hole；14, conductive sheet lid；15, screw；
16, positive stop lug boss；2, cutting element；3, cartridge assemblies；31, machine core turbine；32, shaft；33, preceding end bearing；34, rear axle
It holds；35, corrugated gasket；4, conductive sheet；41, fixed part；42, pin connection；43, locating piece；5, conductive base；51, longitudinal
Strip；52, U-shaped card frame；53, socket；6, cylindrical portion；61, pedestal；611, ball；612, baffle ring；613, limited post；62, outer
Shell；621, positioning convex platform；63, rotary socket；631, positioning convex ring；64, O-ring；7, contact pin；8, annular groove.
Specific embodiment
Presently in connection with attached drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
Basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
Referring to Fig.1, it is a kind of contra-angle handpiece of conductive sheet convenient for safeguarding disclosed by the invention, including handpiece case 1, is threadedly secured in
It nose cover 11 on handpiece case 1 and is fixed in handpiece case 1 and is pierced by handpiece case 1 far from 11 one end of nose cover
Cutting element 2.
Referring to Fig. 3 and Fig. 4, cartridge assemblies 3 and conductive sheet 4 are removably connected in handpiece case 1.Cartridge assemblies 3 include
Machine core turbine 31 and the shaft 32 that rotation is driven by machine core turbine 31, shaft 32 are supported in handpiece case 1 by bearing part,
Bearing part includes preceding end bearing 33 and rear end bearing 34, and preceding 33 bottom of end bearing is provided with corrugated gasket 35.Corrugated gasket 35
Setting, for 33 axial runout of end bearing before preventing.Cutting element 2 is fixed in shaft 32 and is pierced by handpiece case 1 far from machine
One end of skull 11；Conductive sheet 4 passes through in the handpiece case 1 that conductive base 5 is mounted.Handpiece case 1, shaft 32, conduction
Piece 4, conductive base 5 are metal material, and when needing to carry out measure the root canal length, this four metal parts will form electric conduction
Measuring signal is transmitted to cutting element 2 by road.
Referring to Fig. 4, conductive base 5 is set as semi-annular shape, and 5 outer wall of conductive base is provided with longitudinal strip 51, outside head
1 inner wall of shell is provided with the limit card slot 12(for longitudinal 51 grafting of strip referring to Fig. 5), and conductive base 5 passes through 51 He of longitudinal strip
Limit card slot 12 is plugged and fixed in handpiece case 1, and conductive sheet 4 is detachably connected on conductive base 5.It is set in head shell
It is equipped with for overlapped the positive stop lug boss 16(of conductive base 5 referring to Fig. 3).
Referring to Fig. 4, conductive sheet 4 is set as U-shaped elastic piece structure, and conductive sheet 4 includes fixed part 41 and two pin connections
42, fixed part 41 is detachably secured on conductive base 5, and the spacing of two pin connections 42 is less than the outer diameter of shaft 32, is drawn
The side of foot interconnecting piece 42 towards shaft 32 is provided with segmental arc, and two pin connections 42 encircle patch by respective segmental arc
It closes in 32 outer wall of shaft.Conduction brush need to be supportted greatly, then since 4 natural resiliency conductive sheet 4 of conductive sheet can be tightly adjacent to when assembly
Shaft 32.
Referring to Fig. 4, it is preferred that be provided with the mounting hole 13 dismounted for conductive sheet 4 on handpiece case 1, set on conductive base 5
It is equipped with the socket 53 passed through for two pin connections 42.Conductive sheet lid 14 is embedded in mounting hole 13, conductive sheet lid 14 presses
Screw 15 is equipped on 41 lateral wall of fixed part of conductive sheet 4, conductive sheet lid 14, screw 15 sequentially passes through 14 He of conductive sheet lid
Conductive sheet 4 is simultaneously fixed with conductive base 5.Meanwhile the inner sidewall of the fixed part 41 of conductive sheet 4 is fitted in the outer wall of conductive base 5
On, two pin connections 42 of conductive sheet 4 pass through socket 53 from outside to inside and contact with shaft 32.
The implementation principle of the present embodiment are as follows: shaft 32 and conductive base 5 are first packed into contra-angle handpiece, then twist nose cover 11
Tightly, the socket 53 that then conductive sheet 4 passes through on conductive base 5 tightly embraces shaft 32, then successively by conductive sheet lid 14 and screw
15 load onto, and conductive sheet 4 is fixed.When needing to carry out measure the root canal length, measuring signal can be transmitted to head by circuit board
Shell 1, then conductive base 5 is arrived, then arrive conductive sheet 4, then arrive shaft 32, finally arrive cutting element 2.
When needing to safeguard, screw 15 can be backed out by straight screwdriver and remove conductive sheet lid 14 by we, then can
It is very convenient to be safeguarded or be replaced the taking-up of conductive sheet 4, do not need very professional tool.
Embodiment 2
Referring to figure 5 and figure 6, difference from example 1 is that, the connection structure of conductive sheet 4 is different.Conductive base 5
Top is provided with the U-shaped card frame 52 of opening upwards, and the fixed part 41 of conductive sheet 4 is connected in U-shaped card frame 52,41 bottom wall of fixed part
It is arranged there are two the locating piece 43 for limiting the displacement of conductive sheet 4, two locating pieces 43 are embedded respectively in 52 bottom wall of U-shaped card frame
Two sides.
The implementation principle of the present embodiment are as follows: shaft 32 and conductive base 5 are first packed into contra-angle handpiece, conductive sheet 4 is connected to
In fixed frame, the horizontal displacement of conductive sheet 4 is limited, two pin connections 42 of conductive sheet 4 tightly embrace shaft 32, then will
Nose cover 11 is tightened, and limits the length travel of conductive sheet 4, conductive sheet 4 is fixed.When needing to carry out measure the root canal length,
Measuring signal can be transmitted to handpiece case 1 by circuit board, then arrive conductive base 5, then arrive conductive sheet 4, then arrive shaft 32, finally be arrived
Cutting element 2.
When needing to safeguard, we can by screw out nose cover 11, then can by conductive sheet 4 take out carry out maintenance or
Person's replacement, it is very convenient.
Embodiment 3
Referring to Fig. 8 and Fig. 9, a kind of root canal preparation machine using above-mentioned contra-angle handpiece, including head master unit (not shown) and
Above-mentioned contra-angle handpiece is connected between contra-angle handpiece and head master unit by cylindrical portion 6, and head unit and cylindrical portion 6 are far from bender
One end of head is fixedly connected, and contra-angle handpiece insertion cylindrical portion 6 is simultaneously connect with 6 locating rotation of cylindrical portion.
The shank of contra-angle handpiece is provided with the transmission shaft component for drive shaft rotation, it is preferred that transmission shaft component includes
The transmission shaft and the horizontally disposed transmission shaft for being connect with motor for being engaged with turbine being obliquely installed.In use,
The output shaft of the motor sub-assembly of head master unit passes through cylindrical portion 6 and engages with the transmission shaft component in contra-angle handpiece, passes through motor
The rotation of component transmission shaft component, rotates synchronously to drive with turbo- shaft, cutting element work.
Cylindrical portion 6 includes pedestal 61, shell 62, rotary socket 63, O-ring 64, and pedestal 61 is coaxially fixed in shell 62,
The axial one end of rotary socket 63 is rotatably connected on one end inner wall of pedestal 61, and the other end is fixed by connector and contra-angle handpiece, O
Type circle 64 is set on rotary socket 63 and between rotary socket 63 and pedestal 61.
Referring to Fig. 7 and Fig. 8, it is preferred that connector is set as contact pin structure, and connector includes that inserting on contra-angle handpiece is arranged in
Needle 7, contact pin 7 are set as several, and contact pin 7 can be three, four or other quantity, and all contact pins 7 are equally distributed curved
In head outer end wall.It is provided with the slot cooperated with contact pin 7 on rotary socket 63, by the cooperation of contact pin 7 and slot, realizes
The connection of contra-angle handpiece 1 and rotary socket 63, enables rotary socket 63 and contra-angle handpiece synchronous rotary.Contra-angle handpiece is rotatable any
Angle, connector when rotation on head drive rotary socket 63 to rotate, and damping when rotation is provided by O-ring 64.
Referring to Fig. 7 and Fig. 9, pedestal 61 is threaded in shell 62, and 62 inner wall of shell is arranged far from one end of contra-angle handpiece
There are threaded joints, shell 62 is connected through a screw thread portion and is threadedly coupled with pedestal 61；62 inner wall of shell is towards one end of contra-angle handpiece
It is provided with positioning convex platform 621,63 outer wall of rotary socket is provided with positioning convex ring 631, positioning convex ring 631 far from one end of contra-angle handpiece
It is overlapped on positioning convex platform 621 and is fixed by the pressing of pedestal 61, one end of pedestal 61 towards contra-angle handpiece, which is embedded, is fastened on positioning
Between bulge loop 631 and shell 62.631 outer wall of positioning convex ring offers the mounting groove for being embedded O-ring 64, and O-ring 64 is embedded
It is in mounting groove and inconsistent with 61 inner wall of pedestal.
Referring to Fig. 7 and Fig. 9, pedestal 61 is embedded with several balls 611 far from one end outer wall of shell 62, and contra-angle handpiece protrudes into bottom
One end in seat 61 is provided with annular groove 8, and 61 inner wall of pedestal is passed through on the inside of ball 611 and rolling is connected in annular groove 8, contra-angle handpiece is logical
Annular groove 8 and ball 611 is crossed to connect with 6 locating rotation of cylindrical portion.Preferably, it is evenly arranged on 61 outer wall of pedestal several for ball
611 circular holes being embedded, the useful baffle ring 612 with masking circular hole is also arranged on pedestal 61, and 61 outer wall of pedestal is provided with for baffle ring 612
The locating slot being embedded；Installation gap is offered on baffle ring 612, and the limited post 613 in installation gap is plugged on pedestal 61.
All 611 uniform rings of ball are located on the circumference of pedestal 61, and ball 611 passes through 61 inner wall of pedestal and is rotatably connected in annular groove 8.
For the installation convenient for ball 611, ball 611 protrudes the part of 61 inner wall of pedestal for the protrusion of only semicircle.
The implementation principle of the present embodiment are as follows: after 64 sets of O-ring on the mounting groove of rotary socket 63, rotary socket 63 is inserted
Enter in pedestal 61, then shell 62 is tightened on pedestal 61, is finally inserted into contact pin 7 on the slot of rotary socket 63, at this point,
Ball 611 is embedded in the annular groove 8 of contra-angle handpiece, for limiting the axial displacement between contra-angle handpiece and cylindrical portion 6, is so far installed
At.Rotary socket 63 is not completely fixed extremely, can inside be rotated around the axle center of oneself, contra-angle handpiece is connected by contact pin 7
On rotary socket 63, so contra-angle handpiece is not fixed, it can also be rotated around the axle center of rotary socket 63.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff
Various changes and amendments can be carried out without departing from the scope of the present invention completely.The technical scope of this invention is not
The content being confined on specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (8)
1. a kind of contra-angle handpiece of conductive sheet convenient for safeguarding, it is characterised in that: including handpiece case, removably nose cover and cutting
Tool, is removably connected with cartridge assemblies and conductive sheet in the handpiece case, the cartridge assemblies include machine core turbine and
The shaft of rotation is driven by machine core turbine, the shaft is supported in handpiece case by bearing part, and bearing part includes front end axis
It holds and rear end bearing, the cutting element is fixed in shaft and the one end far from nose cover that is pierced by handpiece case；
In the handpiece case that the conductive sheet is mounted by conductive base, the handpiece case, shaft, conductive sheet and conduction
The turning circuit being connected with cutting element is formed between pedestal.
2. the contra-angle handpiece of conductive sheet convenient for safeguarding according to claim 1, it is characterised in that: the conductive base is set as
Semi-annular shape, the conductive base outer wall are provided with longitudinal strip, and the handpiece case inner wall is provided with for longitudinal strip grafting
Limit card slot, the conductive base is plugged and fixed in handpiece case by longitudinal strip and limit card slot, the conductive sheet
It is detachably connected on conductive base.
3. the contra-angle handpiece of conductive sheet convenient for safeguarding according to claim 2, it is characterised in that: the conductive sheet is set as U
Type elastic piece structure, the conductive sheet include fixed part and two pin connections, and the fixed part is detachably secured to conductive base
On seat, the spacing of two pin connections is less than the outer diameter of shaft, and two pin connections are encircled and are fitted in shaft
Outer wall.
4. the contra-angle handpiece of conductive sheet convenient for safeguarding according to claim 3, it is characterised in that: set at the top of the conductive base
It is equipped with the U-shaped card frame of opening upwards, the fixed part of the conductive sheet is connected in U-shaped card frame, and the fixed part bottom wall is provided with
Two locating pieces being displaced for limiting conductive sheet, two locating pieces are embedded respectively in the two sides of U-shaped card frame bottom wall.
5. the contra-angle handpiece of conductive sheet convenient for safeguarding according to claim 3, it is characterised in that: be arranged on the conductive base
There is the socket passed through for two pin connections, the fixed part inner wall fitting of the conductive sheet is fixed on shaft outer wall, described
Two pin connections of conductive sheet pass through socket and and shaft contacts from outside to inside；
It is provided with the mounting hole for conductive sheet dismounting on the handpiece case, is embedded with conductive sheet lid in the mounting hole, it is described
Conductive sheet, which covers, is equipped with screw, and the screw sequentially passes through conductive sheet lid and conductive sheet and fixes with conductive base.
6. the contra-angle handpiece of conductive sheet convenient for safeguarding according to claim 1, it is characterised in that: the nose cover is threadedly coupled
On handpiece case, the preceding end bearing bottom is provided with corrugated gasket.
7. a kind of root canal preparation machine, the contra-angle handpiece including any one of head master unit and claim 1 to 6, feature
It is: is connected between the contra-angle handpiece and head master unit by cylindrical portion, the contra-angle handpiece insertion cylindrical portion and and cylindrical portion
Locating rotation connection；
The cylindrical portion includes pedestal, shell, rotary socket and provides the O-ring of damping due to rotation, and the pedestal is coaxially fixed
Inside the shell, one end of the rotary socket axial direction is rotatably connected on one end inner wall of pedestal, and the other end passes through contact pin and bender
Head connection, the O-ring are set on rotary socket and between rotary socket and pedestal.
8. root canal preparation machine according to claim 7, it is characterised in that: the pedestal is embedded far from one end outer wall of shell
There are several balls, one end that the contra-angle handpiece protrudes into pedestal is provided with annular groove, and base inner wall is passed through on the inside of the ball and is rolled
Dynamic to be connected in annular groove, the contra-angle handpiece is connect by annular groove and ball with cylindrical portion locating rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272899.5A CN109820605B (en) | 2019-04-04 | 2019-04-04 | Bending machine head and root canal preparation machine convenient for maintaining conducting strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272899.5A CN109820605B (en) | 2019-04-04 | 2019-04-04 | Bending machine head and root canal preparation machine convenient for maintaining conducting strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109820605A true CN109820605A (en) | 2019-05-31 |
| CN109820605B CN109820605B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910272899.5A Active CN109820605B (en) | 2019-04-04 | 2019-04-04 | Bending machine head and root canal preparation machine convenient for maintaining conducting strips |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022016599A1 (en) * | 2020-07-20 | 2022-01-27 | 桂林市啄木鸟医疗器械有限公司 | Curved handpiece used for dental root canal therapy |
| CN114025600A (en) * | 2021-11-08 | 2022-02-08 | 南昌三瑞智能科技有限公司 | Electromagnetic shielding rotating part conductive lap joint module of power motor of unmanned aerial vehicle |
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|---|---|---|---|---|
| WO2022016599A1 (en) * | 2020-07-20 | 2022-01-27 | 桂林市啄木鸟医疗器械有限公司 | Curved handpiece used for dental root canal therapy |
| CN114025600A (en) * | 2021-11-08 | 2022-02-08 | 南昌三瑞智能科技有限公司 | Electromagnetic shielding rotating part conductive lap joint module of power motor of unmanned aerial vehicle |
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| CN109820605B (en) | 2023-09-12 |
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