CN112932885B

CN112932885B - Dental chair head fixing device for dentist

Info

Publication number: CN112932885B
Application number: CN202110153851.XA
Authority: CN
Inventors: 许尧祥; 孙健; 张真; 肖文林; 岳金; 薛令法
Original assignee: Affiliated Hospital of University of Qingdao
Current assignee: Affiliated Hospital of University of Qingdao
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2022-11-11
Anticipated expiration: 2041-02-04
Also published as: CN112932885A

Abstract

The invention relates to the technical field of medical auxiliary appliances, and discloses a dental chair head fixing device for an oral doctor, which comprises a fixing table, wherein a sliding cylinder is arranged on the inner wall of the fixing table, a fixing ring is fixedly connected to the outer wall of the sliding cylinder, a piston A is sleeved on the inner wall of the sliding cylinder, a telescopic pipe is fixedly connected to the top surface of the piston A, a pressure pad is sleeved on the fixing ring, a suction groove is formed in the center of the top surface of the pressure pad, rotating grooves are formed in the inner parts of the left side and the right side of the fixing ring, rotating rods are connected with the rotating grooves, the rotating rods are fixedly connected with the bottom surface of the pressure pad in a winding mode, the pulling rods are fixedly connected with the bottom surface of the pressure pad, the head of the patient is adsorbed on the head of the patient through the arrangement of the pressure pad, so that the head of the patient can be guided through pulling force during water spitting operation of the patient, the patient can accurately lie down at the center of the fixing ring without observation, the treatment efficiency is improved, meanwhile, the head of the patient is prevented from colliding with the fixing device, and the rotating rods can be driven to rotate to continue to be in a negative pressure state after being pulled each time, and the connection stability is guaranteed.

Description

Dental chair head fixing device for dentist

Technical Field

The invention relates to the technical field of medical auxiliary appliances, in particular to a dental chair head fixing device for an oral doctor.

Background

When the dentist treats the patient, the patient needs to lie on the dental chair, then keeps opening for the dentist to operate, and in order to avoid the patient head to shake and lead to influencing the treatment operation, can set up head fixing device on the dental chair to fix the patient's head.

In partial oral treatment operation, need the patient regularly to spit out the water in the oral cavity, after the patient spits out the water in oral cavity, need through observing come the head to it in head fixing device again, this process has consumed certain time, has reduced the efficiency of treatment, and does not lead to colliding with of patient's head and fixing device to it easily to it, has certain safe risk. Therefore, there is a need for a dental chair head fixing device for dentists to solve the above problems.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects in the prior art, the invention provides a dental chair head fixing device for an oral doctor to solve the problems.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a dental chair head fixing device for an oral cavity doctor comprises a fixing table, wherein the top surface of the fixing table is in a hollow state, a sliding cylinder is arranged on the inner wall of the fixing table, a fixing ring is fixedly connected to the outer wall of the sliding cylinder, the shape of the fixing ring is a sector, the concave surface of the fixing ring faces upwards, a piston A is sleeved on the inner wall of the sliding cylinder, a telescopic pipe is fixedly connected to the top surface of the piston A, the telescopic pipe penetrates through the sliding cylinder and the fixing ring, part of the outer wall of the telescopic pipe is located above the concave surface of the fixing ring, the centers of the piston A and the telescopic pipe are in a hollow state, a groove is formed in the center of the concave surface of the fixing ring, a pressing pad is sleeved on the center of the inner wall of the top surface of the pressing pad, a rotating groove is formed in the center of the top surface of the pressing pad, the telescopic pipe is communicated with the sucking groove, a rotary rod is formed in the inner wall of the top surface of the telescopic pipe, the rotary rod is located in the rotating groove, a pull rope is fixedly connected with the inner wall of the rotary rod, and the rotary rod is connected with a connecting pipe, and the rotary rod B is connected with the bottom surface of the fixing ring through the fixing ring, and the rotary rod is connected with a connecting pipe, and the piston B, and the rotary rod is arranged on the bottom surface of the cylinder, and the piston B, the back of the cylinder is fixedly installed and communicated with a one-way valve with an air outlet function.

Preferably, piston A bottom surface fixedly connected with dead lever, dead lever bottom fixedly connected with piston C, piston C is the relation of emboliaing with the slide cartridge inner wall, piston C top surface corresponds with the drill way of connecting pipe on the slide cartridge, the inner wall all is equipped with the rectangle arch around the fixed station inner wall and is the relation of emboliaing with the slide cartridge, the inner wall all is equipped with the tooth's socket around the fixed station bottom, slide cartridge bottom outer wall fixedly connected with annular pad, equidistant fixedly connected with several bell blocks of annular pad outer wall, the annular pad outer wall embolias there is the card wheel, the card wheel inner wall corresponds the position of bell block and all sets up porose and bell block and is located wherein, the dorsal bell block of annular pad meshes with the tooth's socket in the fixed station, the slide cartridge passes through trachea and annular pad intercommunication.

Preferably, the equal fixedly connected with supporting pad of fixed station left and right sides top surface, the supporting pad is the triangular prism body and the inclined plane of two supporting pads is corresponding, and the gas pocket has been seted up to solid fixed ring inside, the both ends of gas pocket respectively with pressure pad and supporting pad intercommunication, the inclined plane fixedly connected with fixed plate of supporting pad, the fixed plate is through pivot hinge and fixed station fixed connection.

Preferably, the pressure pad back fixedly connected with connecting pipe, the connecting pipe with inhale the groove intercommunication, the connecting pipe is kept away from the one end fixed connection and the intercommunication of pressure pad and is had a suction tube, round platform hole B has been seted up to the right flank of suction tube, the one side that round platform hole B diameter is big right, the partial inner wall laminating in round platform hole B has round platform baffle B, round platform baffle B passes through elastomer and round platform hole B inner wall connection, the suction tube top surface is seted up porose and downthehole the embolia has been the insert ring that is the quadrant.

Preferably, the right side surface of the suction cylinder is fixedly connected and communicated with an insertion cylinder, and the right side surface of the insertion cylinder is fixedly connected with a sieve plate.

Preferably, the sieve plate is provided with a hole in the center, an insertion tube is sleeved in the hole, and the inner wall of the insertion tube is provided with a screen.

(III) advantageous effects

Compared with the prior art, the invention provides a dental chair head fixing device for an oral doctor, which has the following beneficial effects:

1. this dentist uses dental chair head fixing device, setting through the pressure pad, utilize the negative pressure to adsorb at patient's head, thereby when patient's water discharge operation at every turn, utilize the pulling force to lead patient's head, make the patient need not observe and can accurately lie down in solid fixed ring's center department, when having improved treatment effeciency, avoid colliding with of patient's head and fixing device, and receive all to drive the bull stick rotation after the pulling at every turn and continue the negative pressure state, guarantee the stability of connecting.

2. This dentist lies down the back with dental chair head fixing device through the setting of toper piece, and the toper piece can stretch out the rigidity with the slide cartridge from the card in the wheel, thereby avoids the gliding problem of slide cartridge among the operation process, improves the stability of fixed patient's head, and breaks away from the back of exerting pressure to the pressure pad at patient's head, and the toper piece is automatic to be shrunk, makes the slide cartridge can slide in the fixed station and adjusts solid fixed ring's position, the suitability of improvement device.

3. This dental chair head fixing device for dentist, through the setting of supporting pad, after the patient exerts pressure to the pressure pad, the fixed plate can further fix the patient head through rotating, increases the stability of fixed patient head, and stands up and breaks away from the back of exerting pressure to the pressure pad at the patient, and the automatic gyration of fixed plate breaks away from the centre gripping to the patient head, avoids influencing the speed that the patient stood up, possesses high efficiency and easy operation's benefit.

4. This dentist uses dental chair head fixing device through the setting of inhaling the section of thick bamboo, utilizes the conduction of inhaling the interior negative pressure of groove, when the patient appears chocking the condition such as water, utilizes the negative pressure to come the water of suction patient oral cavity or nasal cavity to help the patient to break away from the state of chocking the water, and can also further increase the intensity and the duration of negative pressure through manual mode, be favorable to reaching better assistance effect.

5. This dentist uses dental chair head fixing device through the setting of sieve, utilizes the sieve to carry out the separation to impurity etc. avoids impurity to inhale the problem that is difficult to the clearance in connecting pipe, flexible pipe or the slide cartridge, also avoids structures such as connecting pipe to receive the appearance of impurity jam scheduling problem.

6. This dentist is with dental chair head fixing device, through the setting of intubate, when taking out the water in patient's oral cavity or nasal cavity through the suction tube, the accessible inserts the mode of intubate and extends to patient's oral cavity or nasal cavity depths, reaches more effective effect of cleaing away under some circumstances.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional front view of the present invention;

FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view of FIG. 1 at B according to the present invention;

FIG. 5 is an enlarged view of FIG. 1 at C;

FIG. 6 is a side sectional structural view of the fixing table of the present invention.

In the figure: 1. a fixed table; 2. a slide cylinder; 3. a piston A; 4. a telescopic pipe; 5. a circular truncated cone hole A; 6. a circular truncated cone baffle A; 7. a spring A; 8. a fixing ring; 9. a pressure pad; 10. a rotating groove; 11. a torsion spring; 12. a rotating rod; 13. a bump; 14. a cylinder; 15. a piston B; 16. sticking a rod; 17. a spring B; 18. a one-way valve; 19. a connecting pipe; 20. fixing the rod; 21. a piston C; 22. clamping the wheel; 23. an annular pad; 24. a conical block; 25. air holes; 26. a support pad; 27. a fixing plate; 28. connecting pipes; 29. a suction tube; 30. a circular truncated cone hole B; 31. a circular truncated cone baffle B; 32. an elastomer; 33. inserting a ring; 34. an insertion cartridge; 35. a sieve plate; 36. inserting a tube; 37. a rotating shaft hinge; 38. a suction groove; 39. and (6) pulling a rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a dental chair head fixing device for an oral cavity doctor comprises a fixing table 1, wherein the top surface of the fixing table 1 is hollowed, a sliding cylinder 2 is arranged on the inner wall of the fixing table 1, a fixing ring 8 is fixedly connected to the outer wall of the sliding cylinder 2, the fixing ring 8 is in a sector shape with the concave surface facing upwards, a piston A3 is sleeved on the inner wall of the sliding cylinder 2, a telescopic pipe 4 is fixedly connected to the top surface of the piston A3, the telescopic pipe 4 penetrates through the sliding cylinder 2 and the fixing ring 8, part of the outer wall of the telescopic pipe is positioned above the concave surface of the fixing ring 8, the centers of the piston A3 and the telescopic pipe 4 are both hollowed, a groove is formed in the center of the concave surface of the fixing ring 8, a pressure pad 9 is sleeved on the center of the concave surface of the fixing ring 8, the pressure pad 9 is in a hollow semi-cylinder shape, the center of the inner wall of the top surface of the pressure pad 9 is fixedly connected with the top end of the telescopic pipe 4, a suction groove 38 is formed in the center of the top surface of the pressure pad 9, the telescopic pipe 4 is communicated with a circular table hole A5 is formed in the inner wall of the top surface of the telescopic pipe 4, the large-diameter side of a circular truncated cone hole A5 faces downwards, a circular truncated cone baffle A6 is attached to the inner wall of the circular truncated cone hole A5, the circular truncated cone baffle A6 is connected with the inner wall of the telescopic tube 4 through a spring A7, rotating grooves 10 are formed in the left side and the right side of a fixing ring 8, a hole is formed in the bottom surface of each rotating groove 10, a rotating rod 12 is connected in the hole through a torsion spring 11, the outer wall, located in each rotating groove 10, of each rotating rod 12 is fixedly connected with and wound with a pull rope 39, one end, far away from the rotating rod 12, of each pull rope 39 penetrates through the fixing ring 8 and is fixedly connected with the bottom surface of a pressure pad 9, protruding blocks 13 are laid on the outer wall, outside the rotating rod 12, of the rotating groove 10 at equal intervals, cylinders 14 are fixedly connected to the left side and the right side of the bottom surface of the fixing ring 8, a piston B15 is sleeved on the inner wall of each cylinder 14, the piston B15 is connected with the inner wall of the cylinder 14 through a spring B17, and one side, corresponding to the rotating rod 12, of the piston B15 is fixedly connected with a sticking rod 16 in a T-shaped body, the sticking rod 16 is stuck with the rotating rod 12 close to the position, one side of the cylinder 14 close to the sliding cylinder 2 is fixedly installed and communicated with a one-way valve 18 with an air inlet function, the one-way valve 18 is fixedly connected and communicated with the sliding cylinder 2 through a connecting pipe 19, the back side of the cylinder 14 is fixedly installed and communicated with a one-way valve 18 with an air outlet function, firstly, the head of a patient is stuck on the pressure pad 9, then the head of the patient in a state of being stuck with the pressure pad 9 is lifted together with the pressure pad 9, the pressure pad 9 is lifted to pull the pull rope 39 to move, the pull rope 39 moves to drive the rotating rod 12 to rotate, when the lug 13 rotates along with the rotating rod 12 to be stuck with the sticking rod 16, the sticking rod 16 is forced to push the piston B15 to slide in the cylinder 14, air in the cylinder 14 is exhausted through the one-way valve 18 on the back side, then the lug 13 rotates along with the rotating rod 12 to be separated from the sticking rod 16, the spring B17 rebounds to drive the piston B15 to slide and exhaust air through the one-way valve 18 connected with the connecting pipe 19, when the check valve 18 connected with the connecting pipe 19 is used for pumping air in the suction groove 38 through the sliding cylinder 2, the piston A3, the extension pipe 4 and the circular table hole A5, so that a negative pressure state is formed in the suction groove 38, the pressure pad 9 is connected with the head of a patient by using the negative pressure, then the head of the patient in a state of being attached with the pressure pad 9 and the pressure pad 9 are placed on the fixing ring 8 together, the torsion spring 11 rebounds to drive the rotating rod 12 to rotate, then the pressure pad 9 in an adsorption state is driven to move together when the patient carries out water spouting action each time, the negative pressure state in the suction groove 38 is continued by pulling the pull rope 39, in the process that the patient pours water to the fixing table 1, the pressure pad 9 is guided by pulling the rebound of the pull rope 39 of the torsion spring 11, so that the patient does not need to observe, the head can be placed at the center of the top surface of the fixing ring 8 only by following the pulling force, through the setting of pressure pad 9, utilize the negative pressure to adsorb at patient's head to when patient's operation of spouting at every turn, utilize the pulling force to lead patient's head, make the patient need not observe and can accurately lie down in solid fixed ring 8 center department, when having improved treatment effeciency, avoid colliding with of patient's head and fixing device, and at every turn 49 receive to drive bull stick 12 after the pulling and rotate and continue the negative pressure state, guarantee the stability of connecting.

The bottom surface of the piston A3 is fixedly connected with a fixed rod 20, the bottom end of the fixed rod 20 is fixedly connected with a piston C21, the piston C21 is in a sleeved relation with the inner wall of the sliding cylinder 2, the top surface of the piston C21 corresponds to an orifice of the connecting pipe 19 on the sliding cylinder 2, the front inner wall and the rear inner wall of the fixed platform 1 are both provided with rectangular bulges and are in a sleeved relation with the sliding cylinder 2, the front inner wall and the rear inner wall of the bottom end of the fixed platform 1 are both provided with tooth grooves, the outer wall of the bottom end of the sliding cylinder 2 is fixedly connected with an annular cushion 23, the outer wall of the annular cushion 23 is fixedly connected with a plurality of conical blocks 24 at equal intervals, the outer wall of the annular cushion 23 is sleeved with a clamping wheel 22, the positions, corresponding to the conical blocks 24, of the inner wall of the clamping wheel 22 are both provided with holes, the conical blocks 24 are positioned in the positions, the conical blocks 24 on the back side of the annular cushion 23 are meshed with the tooth grooves in the fixed platform 1, the sliding cylinder 2 is communicated with the annular cushion 23 through an air pipe, when a patient lies down, the head of the patient can press the pressure pad 9, the pressure pad can descend and can push the piston C21 to slide down through the telescopic pipe 4, after the piston C21 slides downwards, air in the sliding cylinder 2 is injected into the annular cushion 23, the annular cushion 23 is inflated and expanded to push the conical block 24 to extend out of the clamping wheel 22, the conical block 24 extending out of the clamping wheel 22 is meshed with tooth grooves on the inner walls of the front side and the rear side of the fixed table 1, so that the position of the sliding cylinder 2 is fixed, and the sliding of the sliding cylinder 2 in the treatment process is avoided, when the head of a patient does not press the pressure pad 9, the pressure pad 9 rebounds to drive the piston C21 to draw back the air in the annular cushion 23, the conical block 24 rebounds to be separated from the meshing with the tooth grooves on the inner wall of the front side of the fixed table 1, at the moment, the position of the fixed ring 8 can be changed through the position of the sliding cylinder 2 on the fixed table 1, after the patient lies down, the conical block 24 can extend out of the clamping wheel 22 to fix the position of the sliding cylinder 2, so that the problem that the sliding cylinder 2 slides in the operation process is avoided, the stability of fixed patient's head is improved, and break away from the back of exerting pressure to pressure pad 9 at patient's head, the automatic shrink of toper piece 24 for slide cartridge 2 can slide in fixed station 1 and adjust the position of solid fixed ring 8, improves the suitability of device.

The equal fixedly connected with supporting pad 26 of fixed station 1 left and right sides top surface, supporting pad 26 is the triangular prism body and two supporting pad 26's inclined plane is corresponding, gu fixed ring 8 is inside to have seted up gas pocket 25, gas pocket 25's both ends communicate with pressure pad 9 and supporting pad 26 respectively, supporting pad 26's inclined plane fixedly connected with fixed plate 27, fixed plate 27 is through pivot hinge 37 and fixed station 1 fixed connection, its inside air can be injected into supporting pad 26 through gas pocket 25 after pressure pad 9 is pressed, supporting pad 26 inflates and promotes fixed plate 27 and rotates, fixed plate 27 rotates after and forms the centre gripping form between the solid fixed ring 8, thereby with patient's head centre gripping post, further improve the stability fixed to patient's head, when pressure pad 9 is not when pressurized, pressure pad 9 kick-backs the air in with supporting pad 26, supporting pad 26 loses the shrink and drives fixed plate 27 gyration and resets, setting through supporting pad 26, after the patient exerts pressure to pressure pad 9, fixed plate 27 can further fix patient's head through rotating, increase the stability of fixed patient's head, and break away from the back of exerting pressure pad 9, the automatic centre gripping speed that breaks away from the patient's head and the benefit of the simple operation efficiency that has.

The back of the pressure pad 9 is fixedly connected with a connecting pipe 28, the connecting pipe 28 is communicated with a suction groove 38, one end of the connecting pipe 28, which is far away from the pressure pad 9, is fixedly connected and communicated with a suction tube 29, the right side surface of the suction tube 29 is provided with a circular platform hole B30, the side with the large diameter of the circular platform hole B30 faces right, the partial inner wall of the circular platform hole B30 is adhered with a circular platform baffle B31, the circular platform baffle B31 is connected with the inner wall of the circular platform hole B30 through an elastic body 32, the top surface of the suction tube 29 is provided with a hole, a fan-shaped inserting ring 33 is sleeved in the hole, when the mouth of a patient has the phenomenon of water choking and the like, the inserting tube 34 corresponds to the mouth or nasal cavity of the patient, and then the inserting ring 33 is pressed to push the circular platform baffle B31 to be separated from the adhering state with the circular platform hole B30, the negative pressure in the suction groove 38 is pumped through the suction tube 29, so that the moisture at the mouth of the patient is sucked out, the patient is assisted to be separated from the state of choking water, the suction groove 38 can be sealed during water pumping, then the pressure pad 9 is held to move up and down to increase the strength and duration of the negative pressure, the negative pressure in the suction groove 38 is utilized for conducting, when the patient is choking water and other conditions, the water in the oral cavity or the nasal cavity of the patient is sucked out by utilizing the negative pressure, the state of choking water is assisted to the patient, the strength and duration of the negative pressure can be further increased in a manual mode, and the better assisting effect is favorably achieved.

Inhale a section of thick bamboo 29 right flank fixed connection and intercommunication and have and insert a section of thick bamboo 34, insert a 34 right flank fixed connection and have sieve 35, through the setting of sieve 35, utilize sieve 35 to carry out the separation to impurity etc. avoid impurity to inhale the problem that is difficult to the clearance in connecting pipe 28, flexible pipe 4 or the smooth section of thick bamboo 2, also avoid connecting pipe 28 isotructures to receive the appearance of impurity jam scheduling problem.

The sieve plate 35 is provided with a hole in the center, the cannula 36 is sleeved in the hole, the inner wall of the cannula 36 is provided with a screen, and through the arrangement of the cannula 36, when water in the oral cavity or the nasal cavity of a patient is pumped out through the suction tube 29, the water can be extended to the deep position of the oral cavity or the nasal cavity of the patient in a mode of inserting the cannula 36, so that a more effective clearing effect is achieved under partial conditions.

When the device is used, S1, firstly, the head of a patient is attached to a pressure pad 9, then the head of the patient attached to the pressure pad 9 is lifted together with the pressure pad 9, when the pressure pad 9 is lifted, a pulling rope 39 is pulled to move, the pulling rope 39 moves to drive a rotating rod 12 to rotate, when a protruding block 13 rotates along with the rotating rod 12 to be attached to an attaching rod 16, the attaching rod 16 is stressed to push a piston B15 to slide in a cylinder 14, air in the cylinder 14 is exhausted through a one-way valve 18 on the back, then after the protruding block 13 rotates along with the rotating rod 12 to be separated from the attaching rod 16, a spring B17 rebounds to drive the piston B15 to slide and exhaust air through the one-way valve 18 connected with a connecting pipe 19, when the one-way valve 18 connected with the connecting pipe 19 exhausts air, the air in an absorbing groove 38 can be exhausted through a sliding cylinder 2, a piston A3, an extension pipe 4 and a round platform hole A5, make and inhale the interior negative pressure state that forms of groove 38, utilize the negative pressure to be connected pressure pad 9 and patient ' S head, then will place solid fixed ring 8 together with pressure pad 9 with the patient ' S head of pressure pad 9 laminating state, torsional spring 11 kick-backs and drives bull stick 12 gyration, after this when the patient carries out the action of spouting water at every turn, all can drive the pressure pad 9 that is adsorption state and together remove, and continue to inhale the negative pressure state in the groove 38 through pulling stay cord 39, at the in-process that the patient slept to fixed station 1 after spouting water, the pulling of stay cord 39 is come to lead to pressure pad 9 through the resilience of torsional spring 11, make the patient need not observe, only need follow the pulling force and lie down and can place solid fixed ring 8 ' S top surface center with the head.

S2, when a patient lies down, the head of the patient presses the pressure pad 9, the pressure pad 9 descends after being compressed by force and pushes the piston C21 to slide downwards through the telescopic tube 4, the piston C21 injects air in the sliding cylinder 2 into the annular pad 23 after sliding downwards, the annular pad 23 pushes the conical block 24 to extend out of the clamping wheel 22 after being inflated and expanded, the conical block 24 extending out of the clamping wheel 22 is meshed with tooth grooves in the inner walls of the front side and the rear side of the fixed table 1, so that the position of the sliding cylinder 2 is fixed, the sliding of the sliding cylinder 2 in the treatment process is avoided, when the head of the patient does not press the pressure pad 9, the pressure pad 9 rebounds to drive the piston C21 to draw back the air in the annular pad 23, the conical block 24 rebounds to be separated from the tooth grooves in the inner wall of the front side of the fixed table 1, and the position of the fixed ring 8 can be changed through the position of the sliding cylinder 2 on the fixed table 1.

S3, its inside air can be injected into supporting pad 26 through gas pocket 25 after pressure pad 9 is compressed, supporting pad 26 inflates and promotes fixed plate 27 and rotates, fixed plate 27 rotates the back and forms the centre gripping form between the solid fixed ring 8, thereby with patient 'S head centre gripping post, further improve the stability fixed to patient' S head, when pressure pad 9 is not when pressurized, the air in supporting pad 26 is taken back to pressure pad 9 resilience, supporting pad 26 loses the gas shrink and drives fixed plate 27 gyration and reset.

S4, when the phenomenon of water choking and the like occur at the mouth of the patient, the insertion tube 34 is correspondingly arranged at the mouth or the nasal cavity of the patient, then the insertion ring 33 is pressed to push the circular truncated cone baffle B31 to be separated from the attaching state with the circular truncated cone hole B30, the negative pressure in the suction groove 38 is pumped through the suction tube 29, so that the water at the mouth of the patient is sucked out, the patient is assisted to be separated from the state of water choking, and the strength and the duration time of the negative pressure can be increased by closing the suction groove 38 and then vertically moving the pressure pad 9.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oral cavity doctor is with dental chair head fixing device, including fixed station (1), fixed station (1) top surface is the fretwork state, fixed station (1) inner wall is provided with slide cartridge (2), the solid fixed ring of outer wall fixedly connected with (8) of slide cartridge (2), the shape of solid fixed ring (8) is quadrant and concave surface upwards, the inner wall of slide cartridge (2) embolias piston A (3), the flexible pipe (4) of top surface fixedly connected with of piston A (3), flexible pipe (4) run through slide cartridge (2) and solid fixed ring (8) and partial outer wall are located the concave surface top of solid fixed ring (8), the center of piston A (3) and flexible pipe (4) all is the fretwork state, the concave surface center of solid fixed ring (8) is seted up slottedly and embolias pressure pad (9), pressure pad (9) are hollow halfcylinder, the top fixed connection of the top inner wall center of pressure pad (9) and flexible pipe (4), its characterized in that: the piston type telescopic piston cylinder is characterized in that a suction groove (38) is formed in the center of the top surface of the pressure pad (9), the telescopic pipe (4) is communicated with the suction groove (38), a circular table hole A (5) is formed in the inner wall of the top surface of the telescopic pipe (4), one side with a large diameter of the circular table hole A (5) faces downwards, a circular table baffle A (6) is attached to the inner wall of the circular table hole A (5), the circular table baffle A (6) is connected with the inner wall of the telescopic pipe (4) through a spring A (7), rotating grooves (10) are formed in the left side and the right side of the fixed ring (8), a hole is formed in the bottom surface of each rotating groove (10), a rotating rod (12) is connected in the hole through a torsion spring (11), lugs (13) are fixedly connected to the outer wall of the rotating rod (12) in the rotating grooves (10) in a winding mode, pull ropes (39) are wound on the outer wall of the rotating rod (12), one end, far away from the rotating rod (12), penetrates through the fixed ring (8) and is fixedly connected with the bottom surface of the pressure pad (9), lugs (12) are arranged at equal intervals along the outer wall of the outer side of the rotating rod (12), cylinders (15) and are connected with pistons (15) corresponding to pistons (B) through pistons (15), and pistons (15) corresponding to the pistons (17) which are connected with the pistons (17), the sticking rod (16) is stuck with the rotating rod (12) close to the position, one surface of the cylinder (14) close to the sliding cylinder (2) is fixedly installed and communicated with a one-way valve (18) with an air inlet function, the one-way valve (18) with the air inlet function is fixedly connected and communicated with the sliding cylinder (2) through a connecting pipe (19), and the back surface of the cylinder (14) is fixedly installed and communicated with the one-way valve (18) with the air outlet function.

2. The dental chair head fixing device for dentists of claim 1, wherein: the piston A (3) bottom surface fixedly connected with dead lever (20), dead lever (20) bottom fixedly connected with piston C (21), piston C (21) is the relation of emboliaing with slide cartridge (2) inner wall, piston C (21) top surface corresponds with connecting pipe (19) drill way on slide cartridge (2), inner wall all is equipped with the rectangle arch around fixed station (1) inner wall and is the relation of emboliaing with slide cartridge (2), the inner wall all is equipped with the tooth's socket around fixed station (1) bottom, slide cartridge (2) bottom outer wall fixedly connected with annular pad (23), equidistant fixedly connected with several bell shape piece (24) of annular pad (23) outer wall, the ring shape pad (23) outer wall embolias card wheel (22), the position that card wheel (22) inner wall corresponds bell shape piece (24) all sets up porosely and bell shape piece (24) are located wherein, dorsal cone shape piece (24) of annular pad (23) and the tooth's socket meshing in fixed station (1), slide cartridge (2) communicate with annular pad (23) through the trachea.

3. The dental chair head fixing device for dentists of claim 1, wherein: the equal fixedly connected with supporting pad (26) of fixed station (1) left and right sides top surface, supporting pad (26) are triangular prism and the inclined plane of two supporting pads (26) is corresponding, solid fixed ring (8) are inside to have seted up gas pocket (25), the both ends of gas pocket (25) communicate with pressure pad (9) and supporting pad (26) respectively, the inclined plane fixedly connected with fixed plate (27) of supporting pad (26), fixed plate (27) are through pivot hinge (37) and fixed station (1) fixed connection.

4. The dental chair head fixing device for dentists of claim 2, wherein: pressure pad (9) back fixedly connected with connecting tube (28), connecting tube (28) and suction groove (38) intercommunication, the one end fixed connection and the intercommunication that pressure pad (9) were kept away from in connecting tube (28) have suction tube (29), round platform hole B (30) have been seted up to the right flank of suction tube (29), the one side that round platform hole B (30) diameter is big is right, the partial inner wall laminating of round platform hole B (30) has round platform baffle B (31), round platform baffle B (31) pass through elastomer (32) and round platform hole B (30) inner wall connection, suction tube (29) top surface is seted up porosely and downthehole embolia has insert ring (33).

5. The dental chair head fixture for dentists of claim 4, wherein: the right side surface of the suction tube (29) is fixedly connected and communicated with an insertion tube (34), and the right side surface of the insertion tube (34) is fixedly connected with a sieve plate (35).

6. The dental chair head fixture for dentists of claim 5, wherein: the sieve plate (35) is provided with a hole in the center, an insertion pipe (36) is sleeved in the hole, and a screen is arranged on the inner wall of the insertion pipe (36).