CN114272071A

CN114272071A - Operation chair

Info

Publication number: CN114272071A
Application number: CN202111577652.8A
Authority: CN
Inventors: 李学民; 张晴; 丁一; 丁立
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-04-05
Anticipated expiration: 2041-12-22
Also published as: CN114272071B

Abstract

The invention provides an operating chair which is provided with a lifting mechanism, a backrest mechanism, a handrail mechanism, a lying cushion mechanism, a chair seat mechanism, a moving mechanism and a stabilizing mechanism, wherein the lifting mechanism is provided with a locking state and an adjusting state; in the locking state, the lifting structure enters the adjusting state through the pressing triggering operation of the disposable pedal plate, and the height of the seat can be adjusted; in the adjusting state, after the pressing triggering operation is carried out again, the chair enters the locking state, and the height of the chair is locked; the adjustable modular backrest chair is designed according to the operation characteristics and the working requirements of doctors, meets the requirements of human body comfort and use functionality, balances four aspects of comfort, stability, flexibility and convenience of the operation chair, and is comfortable to use and convenient to operate.

Description

Operation chair

Technical Field

The invention relates to the field of seats for operations, in particular to a seat for an ophthalmic operation.

Background

Ophthalmic surgery is a complicated and delicate surgery, which is a surgical technique requiring minute manipulation of fine tissues using a special delicate surgical instrument under a surgical microscope, and requires a doctor to perform stable and accurate manipulation due to a very high manipulation fineness requirement. In an operation, a doctor sits on an operation chair, and needs to perform corresponding operations when observing eye features through an operation microscope, and a certain posture needs to be maintained during the operations.

The operation chair that present special use provided for eye surgeon adopts ordinary circular spiral lift stool, and is very limited to support and stable to doctor's health, can not satisfy the user demand, and improper seat and long-time operation lead to the discomfort and the fatigue of doctor's health, and the muscle strain of neck and back appears easily to the doctor. More importantly, the discomfort and instability of the body in the operation can influence the operation, thereby prolonging the operation time, increasing the pain of patients and weakening the treatment result of doctors.

Therefore, the invention tightly buckles the characteristics and the requirements of operation, particularly ophthalmic operation, and provides the operation chair which has comfortable and stable sitting posture, saves labor in operation, is not easy to be interfered and has composite sterile requirements according to the human ergonomic theory so as to improve the comfortable operation condition of medical care personnel and improve the operation efficiency.

Disclosure of Invention

The present invention is directed to a surgical chair, which solves the above problems of the prior art.

The invention provides a corresponding solution aiming at deeply researching the requirements of the operation on the body and the posture so as to provide a comfortable and practical chair tool for doctors. The technical scheme of the invention is that

An operation chair is provided: the lifting mechanism is provided with a locking state and an adjusting state; in the locking state, the lifting structure enters the adjusting state through one-time pressing triggering operation, and the height of the seat can be adjusted at the moment; in the adjusting state, after the pressing triggering operation is carried out again, the locking state is entered, and the seat height is locked. And the foot valve (209) is positioned below the operating chair chassis, and the pressing triggering operation is a foot pressing foot valve (209).

The lifting mechanism is provided with a piston (202) and a partition disc (2101), the cylinder (205) is divided into an upper cavity (201), a middle cavity (203) and a lower cavity (204) which are not communicated with the outside, the upper end of the piston (202) supports the cushion, and the upper cavity (201) is connected with the lower cavity (204) through an air passage (2110); the partition plate (2101) is fixedly connected with the cylinder (205) and is provided with a vent hole (2102); the pneumatic control valve (208) is positioned in the lower cavity (204) and is connected with a foot valve (209), and when the foot valve (209) is pressed down by foot, the pneumatic control valve (208) can be controlled to open or close the vent hole (2102).

The pneumatic control valve (208) comprises a connecting rod (2107), a guide structure (208a), a moving structure 208c, a rotating structure (208b) and a spring (2109); the connecting rod (2107) is positioned in the lower cavity and penetrates through the bottom surface of the lower cavity, the upper end of the connecting rod can seal the vent hole (2102), and the lower end of the connecting rod is fixedly connected with the foot valve (209) and can move up and down and rotate; the guide structure (208a) is composed of convex strips (2103) which are longitudinally distributed on the upper circumference of the inner cavity surface of the lower cavity, the tail ends of the convex strips (2103) are wedge surfaces with inclination angles, and a groove (2104) is formed between every two adjacent convex strips (2103); the moving structure 208c is fixed on the connecting rod (2107), strip-shaped first guide posts (2105) are distributed on the outer surface of the moving structure along the longitudinal direction, the first guide posts (2105) can slide up and down in the groove (2104), and the bottom of the moving structure is a tooth surface (2106) with an inclined angle; the rotating structure (208b) is movably sleeved on the connecting rod (2107) and is provided with second guide posts (2108) which are distributed along the longitudinal direction, the second guide posts (2108) can slide up and down in the groove (2104), the upper end surface is a wedge surface with an inclination angle and can be meshed with the tooth surface (2106) or the convex strip (2103); the spring (2109) is sleeved on the connecting rod (2107) and is positioned between the rotating structure (208b) and the bottom surface of the lower cavity (204).

Furthermore, the device is also provided with a moving mechanism (5) which comprises a chassis (501), universal wheels (502) and a support (503), wherein the support (503) is fixedly connected with the chassis (501), and the universal wheels (502) are installed on the support (503), and the device is characterized in that the universal wheels (502) are solid tires, and the flat ratio is 60%.

Furthermore, a stabilizing mechanism (7) is provided, and a rubber ball (702) is fixed on each bracket (503) through a connecting rod (701); the rubber ball (702) is just not in contact with the ground when the seat is not in use.

Furthermore, a lying cushion is arranged in front of the seat of the operating chair and used for supporting the front part of the upper half body.

Further, the seat mechanism (6) is covered by a hydrogel cushion (601), and a recess is arranged in the middle.

The invention has the following beneficial effects:

1. the design is carried out according to the operation characteristics and the working requirements of sexual operation doctors, particularly ophthalmologists, the comfort and the use functionality of human bodies are met, and four aspects of comfort, stability, flexibility and convenience of the operation chair are balanced.

2. The lifting operation is simple and convenient, the height can be adjusted and locked by one-time pressing triggering of two-time pedaling, the aseptic requirement is met, and the convenience and flexibility of the lifting and other control of the operating doctor are greatly improved; the disc-shaped pedal reduces hand operation, is accessible at all angles and is convenient to operate.

3. The design of adjustable modularization backup pad accords with different body dimensions's user's demand, reaches the effect of individual customization, and the human body of laminating better supports human muscle and the structure that corresponds, and the best supporting effect of performance alleviates the tired uncomfortable sense of doctor.

4. The stabilizing structure improves the stability problem when movement conflicts with stabilization.

Drawings

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

FIG. 1 is a front view of the surgical chair of the present invention

FIG. 2 is a side view of the chair of the present invention

FIG. 3 is a schematic view of the modular support plate assembly of the chair of the present invention

FIG. 4 is a schematic view of the combination of the longitudinal rail and the transverse arm of the chair of the present invention

FIG. 5 is a schematic view of the combination of the lifting mechanism of the chair according to the present invention

FIG. 6 is a schematic view of the pneumatic control valve assembly of the surgical chair of the present invention

FIG. 7 is a schematic view of the combination of the stabilizing mechanism of the surgical chair of the present invention

Description of reference numerals: the backrest comprises a backrest mechanism 1, a longitudinal guide rail 101, an upper arm 104, a middle arm 105, a lower arm 106, a connecting plate 107, left and right head-neck-shoulder supporting plates 109, left and right back supporting plates 110, left and right sacral supporting plates 111, a piston 202, a partition 2101, a cylinder 205, an upper cavity 201, a middle cavity 203, a lower cavity 204, an air vent 2102, an air control valve 208, a connecting rod 2107, a foot valve 209, a guide structure 208a, a moving structure 208c, a rotating structure 208b, a convex strip 2103, a groove 2104, a first guide column 2105, a tooth surface 2106, a second guide column 2108, a spring 2109, a lying cushion 4, a vertical column 401, a moving mechanism 5, a chassis 501, a universal wheel 502, a bracket 503, a seat mechanism 6, a hydrogel cushion 601, a stabilizing mechanism 7, a connecting rod 701 and a rubber ball 702.

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.

The embodiment of the invention discloses an operation chair based on an ergonomic principle, which improves the operation efficiency of an operator and improves the comfortable operation conditions of the operator, is particularly suitable for ophthalmic operation, and can be used in other operating rooms or scenes according to requirements, and the specific scheme is as follows

An operation chair is provided with a lifting mechanism, a backrest mechanism, a handrail mechanism, a lying cushion mechanism, a chair seat mechanism, a moving mechanism and a stabilizing mechanism.

Further, the lifting mechanism has a locked state and an adjusted state; in a locking state, the lifting structure enters an adjusting state through one-time pressing triggering operation, and the height of the seat is adjusted at the moment; in the adjusting state, after the same pressing triggering operation, the chair enters the locking state, and the height of the chair is locked.

Specifically, the lifting mechanism is controlled by air pressure, the air cylinder 205 is divided into an upper cavity 201, a middle cavity 203 and a lower cavity 204 by the piston 202 and the partition 2101, the three cavities are not communicated with the outside, the upper end of the piston 202 supports a cushion, the height of the seat can be adjusted when the seat moves up and down, the upper cavity 201 is connected with the lower cavity 204 through an air passage 2110, the partition 2101 is fixedly connected with the air cylinder 205, vent holes 2102 for connecting the middle cavity 203 and the lower cavity 204 are annularly distributed on the partition 2101, and the air control valve 208 is located in the lower cavity 204. The connecting rod 2107 penetrates through the bottom surface of the lower cavity and can move up and down, the upper end surface of the connecting rod 2107 is provided with an annular sealing strip which corresponds to the annular vent hole 2102, and the lower end of the connecting rod is fixedly connected with the foot valve 209. The pneumatic control valve is composed of a guide structure 208a, a moving structure 208c and a rotating structure 208b, wherein the guide structure 208a is composed of ribs 2103 which are circumferentially and longitudinally distributed at the upper part inside the lower cavity, the tail ends of the ribs 2103 are wedge surfaces with inclination angles, and a groove 2104 is formed between every two adjacent ribs 2103. The moving structure 208c is fixed on the connecting rod 2107, and the outer surface of the moving structure is longitudinally distributed with strip-shaped first guiding columns 2105, the first guiding columns 2105 can slide up and down in the groove 2104, and the bottom is a tooth surface 2106 with an inclination angle. The rotating structure 208b is movably sleeved on the connecting rod 2107 and has second guiding columns 2108 distributed along the longitudinal direction, the second guiding columns 2108 can slide up and down in the groove 2104, and the upper end surface is a wedge surface with an inclination angle and can be meshed with the tooth surface 2106 or the convex strip 2103. The spring 2109 is sleeved on the connecting rod 2107 and is positioned between the rotating structure 208b and the bottom surface of the lower cavity 204.

The pneumatic control valve 208 controls the switching of the piston locking and moving states by controlling the sealing and opening states of the vent 2102 by the connecting rod 2107. When the vent hole 2102 is sealed, the piston cannot move downwards and is in a locking state because high-pressure gas between the upper cavity and the middle cavity is not communicated; when the vent 2102 is opened, the piston can move up and down and is in an adjustable state due to the gas communication between the upper cavity and the middle cavity. Under the sealing state of the vent hole 2102, the second guide post 2105 and the second guide post 2108 are both limited by the groove, the tooth surface 2106 is half-meshed with the second guide post 2108, the spring 2109 is in a compressed state, and under the action of the elastic force of the spring, the second guide post 2108 presses the moving structure 208c upwards through the tooth surface 2106 in contact with the second guide post, so that the connecting rod 2107 presses the vent hole 2102 through the annular sealing strip, and the vent hole 2102 is in a closed state.

When the foot valve 209 is pressed down, the connecting rod 2107 moves downwards, the vent hole 2102 is opened, the spring 2109 is further compressed, the moving structure 208C is pressed down to make the rotating structure 208B move downwards, because the first guide post 2105 and the second guide post 2108 are both limited by the groove 2104, the tooth face 2106 presses the second guide post 2108 which is half-engaged with the tooth face 2106 downwards, when the second guide post 2108 moves downwards to completely slide out of the groove 2104, the limiting effect of the groove 2104 to the second guide post is eliminated, the second guide post 2108 rotates 30 degrees under the pressure of the inclined contact face of the tooth face 2106 to be fully engaged with the tooth face 2106, when the foot valve 200 is released, under the action of the spring force, the second guide post 2108 moves upwards to press the tooth face 2106 in the full-engaged state, when the tooth face 2106 moves upwards to make the upper end face of the tooth face parallel to the wedge face of the convex strip 2103, the upper end face of the second guide post 2108 is blocked by the wedge face of the convex strip 2103 and is in the half-engaged state, because the spring 2109 continues to act on the elastic force, the rotating structure 208b continues to rotate 45 degrees under the extrusion force of the inclined contact surface under the half-engagement until the upper end surface of the second guide post 2108 is completely engaged and limited by the convex strip 2103, because the tooth surface between the tooth surface 2106 and the convex strip 2103 is in a staggered design, the second guide post 2108 is in the half-engagement position of the tooth surface 2106, on the other hand, the spring 2109 loses the acting force on the moving structure 208c, the moving structure 208c cannot seal the vent hole 2102, the piston can freely move up and down, and the user can freely adjust the height of the seat.

When the foot valve 209 is depressed downwards again, the connecting rod 2107 moves downwards again, the moving structure 208C presses the rotating structure 208B downwards, because the tooth surface 2106 and the second guide post 2108 are in a half-meshed state, when the second guide post 2108 moves downwards and completely slides out of the groove 2104, under the action of the elastic force of the spring 2109, the rotating structure 208B rotates by 30 degrees so that the second guide post 2108 is in full-meshed engagement with the tooth surface 2106, and simultaneously the second guide post 2108 is matched with the adjacent groove 2104, when the foot valve 209 is released, under the action of the elastic force of the spring 2109, the rotating structure 208B pushes the moving structure 208C upwards through the pressing tooth surface 2106 until the upper end surface of the connecting rod 2107 is in contact with the partition 2101, the annular sealing strip presses the vent hole 2102, the vent hole 2102 is closed, the gas communication between the middle chamber and the lower chamber is blocked, the piston cannot move upwards and downwards, and the seat returns to a stable state.

By cycling the above process when the foot valve 209 is depressed again, the same trigger can be used to switch between the adjustment and locking states. Preferably, still can set up the atmospheric pressure cavity of change cross section according to the structure of current seat to the experience of improvement lift. The invention selects the pedal as the pressing triggering mode, does not need to be operated by hands, and meets the aseptic requirement of the operation; in addition, when the existing seat is used for adjusting the height, the adjustment can be realized only by continuously pressing the hand to exert force when the button is triggered, and the doctor cannot perform the operation in the operation process; the scheme of the invention can be completed by only two steps, and through the lifting structure controlled by the two-state machine, a user does not need to continuously exert force when adjusting the height of the seat; the design of disc foot rest dish also considers that the doctor tramples in the arbitrary direction and all can trigger when the height-adjusting, 360 pedal touches for it is more convenient to adjust the operation.

The backrest mechanism 1 is of an adjustable modular structure and comprises a longitudinal guide rail 101, a transverse support arm, a modular support plate and a backrest soft sleeve, wherein the longitudinal guide rail is of a curved structure and adapts to the curved characteristics of the waist and the back of a human body; the transverse support arms are parallelly provided with 3 pairs of upper support arms 104, middle support arms 105 and lower support arms 106, the middle parts of the upper support arms, the middle support arms and the lower support arms are connected with the longitudinal guide rail through connecting plates 107, and the connecting plates can slide up and down in the longitudinal guide rail and are fixed on the longitudinal guide rail through screws;

the modular support plates include left and right head and neck shoulder support plates 109, left and right back support plates 110, left and right sacral support plates 111; the left head-neck-shoulder supporting plate, the right back supporting plate, the left sacral supporting plate and the right sacral supporting plate are fixed on the transverse supporting arms at corresponding positions through detachable connecting structures, the positions can be adjusted left and right in the transverse direction, and the movable connecting structures can be clamped by adopting buckle structures, for example.

The distribution of the modularized supporting plates is set according to the stress condition of muscles of each part of the back of a human body under the sitting posture condition. The back of the chair leans on the structure in current seat is fixed, and to different heights, fat slim user, the travelling comfort and the support nature that different people used are different, and to the individual of in-service use and must reach the effect that the design is expected to be supported. The adjustable modular back rest is designed, so that the adjustable modular back rest can adapt to users with different heights and body shapes, the longitudinal height position of each transverse support arm can be adjusted by the screws of the connecting plate according to the body structure characteristics, muscle distribution and personal preference of the user, the left transverse position and the right transverse position of the modular support plates with the left symmetrical structure and the right symmetrical structure are adjusted by the movable connecting structure, the up-down and left-right directions of each support plate are freely adjusted, the support function of each support plate is really played at the corresponding muscle, and the optimal individual support effect is achieved.

Furthermore, the material of the support plate is high-resilience polyurethane material, so that the capability of resisting external pressure is strong; the outer surface of the bag is covered with a soft cover, such as a warp-knitted spacer fabric, to achieve maximum cushioning. Preferably, the height of the longitudinal guide rail 101 is 665mm, and the width of the longitudinal guide rail is 100mm, so that the height of the longitudinal guide rail is suitable for applicable people of different heights; the lengths of the upper arm 104, the middle arm 105 and the lower arm 106 are 265mm, 180mm and 120mm respectively, the sizes are set according to the statistical data of the sizes of the shoulder width, the chest width and the waist width of a human body, the widths of the upper arm 104, the middle arm 105 and the lower arm 106 are 30mm, 100mm and 60mm respectively to ensure enough supporting strength,

the backrest mechanism adopted by the invention has higher adjustment freedom, can realize the personalized setting of any individual, improves the supporting capability and comfort of the seat, and relieves the muscle fatigue of the back area in the operation.

The armrest mechanism 3 is similar to a backrest mechanism, and is also composed of modular armrest support plates 302 and guide rails 301, which are positioned on the left and right sides of the seat cushion, and the armrest support arms and the armrest support plates are arranged in the front-back direction, and the armrest support plates can move and be fixed on the armrest support arms through movable connecting structures. The armrest supporting plate can be adjusted to be in front and back positions and up and down positions.

Seat the place ahead is provided with prone pad 4, and prone pad 4 passes through stand 401 and cushion structural connection, provides the holding power for the health front portion when the health leans forward. To avoid the discomfort of the chest during prolonged use, the height is below the chest. The preferred stand has certain elasticity, can produce certain deformation, increases the travelling comfort that pushes down and support. The pad of lying prone is fixed as the supplementary in health the place ahead, when the doctor adopts the posture operation that leans forward, can reduce health load and fatigue.

The moving mechanism 5 comprises a chassis 501, universal wheels 502 and a support 503, the universal wheels are mounted on the support, the support is respectively located in four directions of the chassis and fixedly connected with the chassis, and the tail end of the support is connected with the universal wheels. The universal wheel is a neutral soft solid tire, so that the ground holding force is enhanced; the surface of the solid tire is provided with patterns to increase friction force and has tire hair to facilitate judging the abrasion condition. Preferably, the solid tire flat ratio (flat ratio ═ H/W × 100%) is 60%. The solid tire material is solution polymerized styrene butadiene rubber (SSBR). The universal wheel structure has better stability and flexibility, and when a doctor carries out precise operation, the posture stability of the doctor can be ensured, and the movable seat can be adjusted as required.

The seat mechanism 6 is covered by a hydrogel cushion 601. The mechanical properties of the hydrogel show that the nano-fibril SDC network of the same biopolymer enhances the molecular gel and can significantly improve HHG mechanical properties. The viscoelastic HHG has a storage modulus 3 times greater and a Young's modulus 4 times greater than either of the networks at the same concentration. The cushion adopts the aquogel material, has sunken in the middle of the cushion, is similar to the erythrocyte structure, and human buttock shank curve of laminating that can be fine improves the travelling comfort to can also increase the frictional force with buttock, shank, have antiskid, stable effect, improve the stable and removal seat of being convenient for of position of sitting.

The stabilizing mechanism 7 comprises a connecting rod 701 and a rubber ball 702, the connecting rod 701 is arranged on the support 503, the upper end of the connecting rod 701 is fixedly connected with the support 503, the lower end of the connecting rod is fixedly connected with the rubber ball 702, and the rubber ball 702 is just not contacted with the ground under the condition that the seat is not used and is matched with the moving mechanism 5, so that the moving stability is improved; preferably, the bracket in each direction is provided with a corresponding stabilizing mechanism; when a user sits on the chair to observe or operate, the solid tire of the universal wheel deforms to a certain extent along with pressure, the rubber ball is in contact with the ground and is extruded and deformed, and the friction force between the rubber ball and the ground is increased, so that the chair is prevented from being moved by mistake, and the static stability of the chair during operation is enhanced; when a user wants to move the seat, the user needs to step on the ground by two legs for supporting, the pressure applied to the seat is reduced, the deformation of the universal wheels is recovered, the rubber ball moves upwards to leave the ground, the friction force between the rubber ball and the ground is reduced, and the position of the seat can be flexibly moved through the universal wheels; when the human body recovers to press and sits on the seat, the rubber ball deformation seat stops moving, and unnecessary inertia slippage phenomenon can not occur. The structure design enables the seat to move flexibly when moving, and can prevent the unintentional sliding when the seat is static.

Different from a chair used in daily office work, the operation chair needs to bear a doctor to complete complex and fine operation, the comfort and the stability of the chair are very important, comfortable sitting feeling, proper support, no additional interference, timely flexibility and stability can help the doctor to stabilize the body posture, reduce the fatigue or the influence caused by discomfort, and the doctor can not be influenced by other factors in the operation to smoothly carry out the operation. The height of the chair can be adjusted by designing a one-time pedal mode for operation, and the height of the chair can be adjusted without continuously exerting force in the adjusting process like the conventional chair, so that the operation of a doctor is facilitated, and an assistant can assist in the operation; the backrest is customized according to the individual body type through the adjustable modularized support plate, so that the shoulders, the back, the lower waist and other parts of the body are sufficiently supported, the upper half of the body is well stabilized, and the actions of the hands are more stable; the front groveling pad can provide a certain supporting force for a doctor when the doctor needs to lean forward, prevent the body from being unstable when the doctor needs to lean forward and concentrate on operating, and can provide a certain auxiliary effect when the doctor steps on the ground to lift the hip to move the chair; the assistance is important in a specific scene, for example, when a doctor needs to maintain the operation of the upper limbs at a specific position, the body is in a half-squatting state when the chair is moved, and muscles at all positions need to exert force simultaneously, so that the upper limbs are easy to shake or even lose stability, and the supporting force provided by the groveling pad in front can play a good role in stably supporting, so that the stress of the body is more uniform; through setting up stabilizing mean, even the doctor excessively leans forward, and when relying on the pad of lying prone to support, the seat can not slide forward, influences the operation. When a doctor sits on the seat to operate, the groveling pad, the cushion, the backrest, the moving mechanism and the stabilizing mechanism mutually promote and cooperate to jointly form a stable use environment, so that the doctor can perform any necessary operation on the upper body and the upper limbs in a sitting posture state without worrying about body instability or difficulty in insisting due to fatigue, pain points used by the current surgical chair are solved, and the chair has very important practical use value.

The embodiments in the present description are described in a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the relevant points can be referred to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An operating chair having a lifting mechanism, wherein the lifting mechanism has a locked state and an adjusted state; in the locking state, the lifting structure enters the adjusting state through one-time pressing triggering operation, and the height of the seat can be adjusted at the moment; in the adjusting state, after the pressing triggering operation is carried out again, the locking state is entered, and the seat height is locked.

2. A surgical chair according to claim 1, characterized in that it has a disk-shaped foot valve (209) located below the chassis of the chair, said push-down triggering operation being in particular a foot push-down foot valve (209).

3. The operating chair as claimed in claim 2, wherein the lifting mechanism has a piston (202) and a spacer disc (2101) which divides the cylinder (205) into an upper chamber (201), a middle chamber (203) and a lower chamber (204) which are not communicated with the outside, the upper end of the piston (202) supports the cushion, and the upper chamber (201) is connected with the lower chamber (204) through an air passage (2110); the partition plate (2101) is fixedly connected with the cylinder (205) and is provided with a vent hole (2102); the pneumatic control valve (208) is positioned in the lower cavity (204) and is connected with a foot valve (209), and when the foot valve (209) is pressed down by foot, the pneumatic control valve (208) can be controlled to open or close the vent hole (2102).

4. A surgical chair as claimed in claim 3, wherein the air operated valve (208) comprises a linkage (2107), a guide structure (208a), a moving structure 208c, a rotating structure (208b) and a spring (2109); the connecting rod (2107) is positioned in the lower cavity and penetrates through the bottom surface of the lower cavity, the upper end of the connecting rod can seal the vent hole (2102), and the lower end of the connecting rod is fixedly connected with the foot valve (209) and can move up and down and rotate; the guide structure (208a) is composed of convex strips (2103) which are longitudinally distributed on the upper circumference of the inner cavity surface of the lower cavity, the tail ends of the convex strips (2103) are wedge surfaces with inclination angles, and a groove (2104) is formed between every two adjacent convex strips (2103); the moving structure 208c is fixed on the connecting rod (2107), strip-shaped first guide posts (2105) are distributed on the outer surface of the moving structure along the longitudinal direction, the first guide posts (2105) can slide up and down in the groove (2104), and the bottom of the moving structure is a tooth surface (2106) with an inclined angle; the rotating structure (208b) is movably sleeved on the connecting rod (2107) and is provided with second guide posts (2108) which are distributed along the longitudinal direction, the second guide posts (2108) can slide up and down in the groove (2104), the upper end surface is a wedge surface with an inclination angle and can be meshed with the tooth surface (2106) or the convex strip (2103); the spring (2109) is sleeved on the connecting rod (2107) and is positioned between the rotating structure (208b) and the bottom surface of the lower cavity (204).

5. The chair of claim 2, further comprising an adjustable modular back rest mechanism, said back rest mechanism comprising three sets of bilaterally symmetrical support plates, each of said support plates being adjustable in up, down, left and right directions to accommodate the anatomy of the user.

6. An operating chair according to claim 5, wherein said three support plates are a left and right head and neck shoulder support plate (109), a left and right back support plate (110), a left and right sacral support plate (111), respectively, for supporting respective body parts of the user.

7. A surgical chair as claimed in claim 2 or 6, further comprising a moving mechanism (5) comprising a chassis (501), universal wheels (502) and a bracket (503), wherein the bracket (503) is fixedly connected with the chassis (501), and the universal wheels (502) are mounted on the bracket (503), characterized in that the universal wheels (502) are solid tires, and the aspect ratio is 60%.

8. A surgical chair as claimed in claim 7, further comprising a stabilizing mechanism (7) for securing a rubber ball (702) to each of said brackets (503) by means of a link (701); the rubber ball (702) is just not in contact with the ground when the seat is not in use.

9. A surgical chair as claimed in claim 8, wherein the chair seat has a body cushion in front of the chair seat for supporting the front of the upper body.

10. An operating chair as claimed in claim 9, characterised in that the seat means (6) is covered by a hydrogel cushion (601) with a depression in the middle.