CN218247413U - Microsurgery chair - Google Patents

Abstract

The utility model discloses a microsurgery chair, including base, seat, be located the seat adjustment mechanism that the base top was used for adjusting the lift of seat and be located both ends are used for supporting the armrest frame subassembly of medical personnel's arm about the seat. The handrail frame assembly comprises a supporting plate, a supporting assembly and a backrest support frame, the supporting plate is sequentially arranged from top to bottom, the supporting plate can be driven to rotate and stop along with the rotation of the supporting plate, the supporting assembly can be driven to adjust up and down along with the rotation of the supporting plate, the supporting plate is horizontally rotated and connected to the top end of the rotating and stopping assembly, the bottom end of the supporting assembly is connected with the seat plate, the backrest is arranged above the seat plate through the backrest support frame, one end of the backrest support frame is connected with the back face of the backrest, and the other end of the backrest support frame is connected with the bottom of the seat plate. Through the cooperation use of rotatory along with stopping subassembly and layer board, make the layer board can rotate and the auto-lock in the horizontal direction to can adjust the position angle of layer board according to specific demand, keep the accurate operation of operation doctor's both hands arm.

Description

Microsurgery chair

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a microsurgery chair.

Background

When operating, an operator usually performs sitting posture operation, and in the current operating chair, since the doctor holds medical instruments for operating with both hands, the arms need to be lifted for a long time and the shaking of the arms needs to be avoided as much as possible, and support plates are generally arranged on both sides of the operating chair to support the arms or elbows. However, the position of the supporting plate arranged on the current surgical chair is fixed, and different position angles cannot be adjusted in a rotating manner according to the requirements of doctors, so that a microsurgical chair capable of enabling the supporting plate to rotate and stop at any time is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model aims to provide a microsurgery chair, the layer board can rotate and auto-lock in the horizontal direction to can adjust the position angle of layer board according to specific demand, keep the accurate operation of operation doctor's both hands arm.

In order to solve the technical problem, the utility model discloses a technical scheme as follows: a microsurgical chair comprising:

a base;

the seat plate is positioned above the base;

the seat plate adjusting mechanism is positioned between the base and the seat plate and used for adjusting the lifting of the seat plate;

the armrest frame component is respectively positioned at the left end and the right end of the seat plate and used for supporting the arms or elbows of medical personnel, the armrest frame component comprises a supporting plate, a rotation stop-following component and a supporting component, the supporting plate is sequentially arranged from top to bottom, the rotation stop-following component can drive the supporting plate to rotate and stop at the same time, the supporting component supports the supporting plate, and the bottom end of the supporting component is connected with the seat plate;

the backrest is arranged above the seat plate through a backrest support frame, one end of the backrest support frame is connected with the back surface of the backrest, and the other end of the backrest support frame is connected with the bottom of the seat plate;

and the caster wheels are positioned below the base and are connected with the bottom end of the base in a rolling way.

As a further improvement of the present invention, the rotary stop-and-go assembly comprises:

a fixing plate fixed in the bottom groove of the supporting plate,

the fixed cover is positioned below the fixed plate, the top end of the fixed cover is connected with a flange, the flange and the top end of the fixed cover form a step, and the bottom end of the fixed cover is fixedly connected with the top end of the supporting assembly;

a first spring, one end of which is fixed on the step formed by the fixed cover and the flange;

the steel ball is fixedly connected to the other end of the first spring;

one end of the fixing plate, which is close to the fixing cover, is provided with a rotating hole matched with the outer diameter of the flange, more than 2 semicircular grooves are arranged along the circumferential direction of the rotating hole, and the outer peripheral wall of the flange is abutted to a screw penetrating through the inner wall of the rotating hole;

when the supporting plate rotates horizontally, the steel balls slide in the plurality of semi-circular grooves in sequence.

As a further improvement of the utility model, the half slot sets up to 10, and sets up along the circumferencial direction equidistant of rotatory hole.

As a further improvement of the present invention, the seat plate adjusting mechanism comprises:

one end of the hydraulic rod is connected with the bottom of the seat plate;

the hydraulic oil cylinder is positioned at the top end of an oil cylinder seat arranged at the top end of the base so as to drive the hydraulic oil pressure rod to move up and down;

the pedal assembly is used for driving the hydraulic oil cylinder to work and comprises a first connecting rod assembly and a second connecting rod assembly which are respectively connected with the two ends of the hydraulic oil cylinder, a foot-operated ascending pedal is arranged above one side of the front end of the base of the first connecting rod assembly, and a foot-operated descending pedal is arranged above the other side of the front end of the base of the second connecting rod assembly;

when the lifting pedal is stepped by a foot to drive the first connecting rod assembly to move, the hydraulic oil cylinder drives the hydraulic rod to lift, and when the lifting pedal is stepped by a foot to drive the second connecting rod assembly to move, the hydraulic oil cylinder drives the hydraulic rod to descend.

As a further improvement, still be provided with the direction subassembly with hydraulic stem simultaneous movement between base and the seat, the slider that the direction subassembly includes slide rail fixed plate, is located slide rail fixed plate's a terminal surface and relative slide rail that sets up and supports, is located two slide rail supports between and linear guide subassembly that can up-and-down motion and be connected with linear guide subassembly sliding block, the top of slider with the bottom of seat is connected, and every slide rail supports respectively with the top fixed connection of base, the guide rail and the slide rail fixed plate of linear guide subassembly are connected.

As a further improvement, every the outside that the slide rail supported all is connected with the extension spring, all be provided with the couple on first link assembly and the second link assembly, the other end of every extension spring is connected with the couple that is located same survey respectively.

As a further improvement, the base includes T shape bottom plate and is located the base housing that T shape bottom plate top can supply the hydraulic stem to run through, the periphery wall cover of hydraulic stem is equipped with the ripple telescopic cover, the one end of ripple telescopic cover with the bottom of seat is connected, the inner wall fixed connection of the hole that the other end of ripple telescopic cover and base housing top were seted up.

As a further improvement, the utility model discloses a every group the supporting component all includes the outer pole and can be in the outer pole flexible interior pole from top to bottom, the top of pole and the rotatory bottom fixed connection who stops the subassembly in flexible, the outer pole is kept away from the one end of pole in flexible and is connected with the bottom of seat.

As a further improvement of the utility model, a sleeve is connected between the outer rod and the telescopic inner rod, the outer wall of the sleeve is connected with a dividing pin, one end of the dividing pin, which is positioned on the outer wall of the sleeve, the other end of the dividing pin transversely penetrates through the outer wall of the sleeve and is positioned in the sleeve, the outer walls of two telescopic inner rods are provided with a limiting groove along the length direction of the telescopic inner rod, and a plurality of limiting holes matched with the dividing pin are uniformly arranged in the limiting groove;

when the handle of the index pin moves towards the direction far away from the sleeve, the telescopic inner rod can slide up and down in the outer rod, and when the handle of the index pin moves towards the direction near the sleeve, one end of the index pin far away from the handle of the index pin is abutted to one limiting hole.

As a further improvement of the utility model, still include back adjusting part, back adjusting part is including setting up at the sliding seat of back rear end, being located the back sliding tray seat that the seat bottom set up along the seat fore-and-aft direction, the vertical adjustment handle that the control sliding tray goes up and down and control back support frame gliding horizontal adjustment handle around, sliding connection about sliding tray and the sliding seat behind the sliding tray that the one end of back support frame set up through the top of sliding tray, the other end of back support frame along sliding connection around the back sliding tray seat.

As a further improvement of the utility model, the longitudinal section of the backrest support frame is in an L shape, one end of the backrest support frame is provided with a first limiting chute along the length direction of the backrest support frame, and the other end of the backrest support frame is provided with a second limiting chute along the length direction of the backrest support frame;

the back is kept away from to the sliding seat one end face is provided with first through-hole, the bottom of back sliding chute seat is provided with the second through-hole, vertical adjustment handle passes first through-hole and first spacing spout in proper order after with sliding seat swing joint, horizontal adjustment handle passes second through-hole and second spacing spout in proper order after with seat swing joint.

As a further improvement of the utility model, the utility model also comprises arm support adjusting mechanisms which are respectively arranged at the lower end of the seat plate and enable the supporting components at the two ends of the seat plate to be close to or far away from each other, each group of the arm support adjusting mechanisms comprises,

the armrest shaft heads are symmetrically fixed at the left end and the right end of the bottom of the seat plate and are close to the front of the seat plate, and the armrest shaft heads are far away from the outer wall of one end of the seat plate and are provided with a placing groove along the circumferential direction of the armrest shaft heads;

the shaft sleeve is sleeved on the outer peripheral wall of the handrail shaft head and is rotationally connected with the handrail shaft head, and the outer wall of the shaft sleeve is fixedly connected with one end, far away from the supporting plate, of the supporting assembly;

one end of the first ring-shaped element is positioned in the shaft sleeve and fixedly connected with the inner wall of the shaft sleeve, the other end of the first ring-shaped element extends upwards to be positioned above the shaft sleeve and is movably sleeved on the outer peripheral wall of the handrail shaft head, a first annular step is formed by the top end of the first ring-shaped element and the top end of the shaft sleeve, and a second annular step is formed by the bottom end of the first ring-shaped element and the inner wall of the shaft sleeve;

and the clamp spring is positioned in the placing groove of the handrail shaft head and positioned below the second annular step and used for clamping the shaft sleeve connected with the first annular piece.

As a further improvement, the outer wall swing joint of axle sleeve has damping screw, another tip of damping screw runs through behind the outer wall of axle sleeve and first loop forming element in proper order inconsistent with the outer wall of handrail spindle nose.

As a further improvement of the utility model, the utility model also comprises a limit component which respectively limits the arm support adjusting mechanisms at both ends, each group of limit components comprises,

the brake ring comprises a second ring-shaped piece with an opening, a first connecting lug arranged at the first free end of the second ring-shaped piece and a second connecting lug arranged at the second free end of the second ring-shaped piece, and the second ring-shaped piece is sleeved on the outer peripheral wall of the first ring-shaped piece and is positioned on the first annular step;

the limiting block is positioned on one side of the first connecting lug and is rotationally connected with the bottom of the seat plate;

the fixing block is positioned on one side of the second connecting lug and fixedly connected with the bottom of the seat plate;

the armrest brake rod is fixed at one end of the outer side of the limiting block;

when the handrail brake lever drives one end of the limiting block to be abutted against the first connecting lug, the first connecting lug and the second connecting lug are close to each other, the second ring piece is locked with the first ring piece, when the handrail brake lever drives one end of the limiting block to be separated from the first connecting lug, the first connecting lug and the second connecting lug are far away from each other, and the second ring piece is separated from the first ring piece.

As a further improvement of the utility model, the number of the caster wheels is 3, the caster wheels are respectively arranged below the 3 free ends of the T-shaped bottom plate, wherein, the caster wheel positioned in front of the T-shaped bottom plate is a brake-by-wire caster wheel, the brake assembly for controlling the brake-by-wire caster wheel is also included, the brake assembly comprises,

a brake pedal;

the rotating plates are positioned at the bottom end of the brake pedal and are oppositely arranged on the left and right sides, and each rotating plate is provided with an arc-shaped through hole along the length direction of the rotating plate;

the brake rod is positioned between the two rotating plates, the top end of the brake rod is transversely provided with a movable pin in a penetrating manner, and the two ends of the movable pin are connected with the arc-shaped through holes on the two sides in a front-back sliding manner;

the brake fixing screw sleeve is positioned at the top end of the base, the left end and the right end of the brake fixing screw sleeve are respectively movably connected with the rotating plates positioned on the same side, a stud at the top end of the brake-by-wire caster wheel penetrates through the bottom of the T-shaped bottom plate and then is connected with the brake fixing screw sleeve, and the bottom of the brake rod penetrates through the top end of the brake fixing screw sleeve and then is connected with a wire rod of the brake-by-wire caster wheel positioned in the brake fixing screw sleeve;

when the front end of the brake pedal is trampled, the movable pin drives the brake rod to move upwards along the axial direction of the brake fixing threaded sleeve, the wire rod of the wire control brake caster wheel connected with the brake rod is driven to move upwards, the wire control brake caster wheel is locked, when the rear end of the brake pedal is trampled, the movable pin drives the brake rod to move downwards along the axial direction of the brake fixing threaded sleeve, the wire rod of the wire control brake caster wheel connected with the brake rod is driven to move downwards, and the wire control brake caster wheel is unlocked.

As a further improvement of the utility model, the utility model also comprises a backrest self-adaptive elastic component which is positioned between the backrest and a sliding seat, the sliding seat is close to one end surface opening of the backrest self-adaptive elastic component and is provided with a containing cavity for placing the backrest self-adaptive elastic component, the backrest self-adaptive elastic component comprises,

one end face of the connecting plate is fixed on the back face of the backrest;

the adjusting plate is fixed in the accommodating cavity of the sliding seat;

the pin shaft is transversely positioned between the connecting plate and the adjusting plate, one end of the adjusting plate, which is close to the connecting plate, is provided with an adjusting hole for one end of the pin shaft to penetrate through, one end of the pin shaft is positioned in the adjusting hole, and the other end of the pin shaft is fixedly connected with the connecting plate;

the second spring is positioned between the connecting plate and the adjusting plate and sleeved on the pin shaft;

the hinge is positioned between the connecting plate and the adjusting plate, one end of the hinge is connected with the connecting plate, and the other end of the hinge is connected with the adjusting plate;

when the connecting plate moves towards the direction leaning against the adjusting plate, one end, located in the adjusting hole, of the pin shaft moves towards the direction far away from the connecting plate, and the second spring is extruded.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses chair a microsurgery chair uses along with the cooperation of stopping subassembly and layer board through the rotation, makes the layer board can rotate and auto-lock in the horizontal direction to can adjust the position angle of layer board according to concrete demand, keep the accurate operation of operation doctor both hands arm.

2. The utility model discloses a microsurgery chair through setting up seat adjustment mechanism, can adjust the height of seat according to the height of difference, has improved the utilization ratio of operation chair.

3. The utility model discloses chair a microsurgery chair through setting up back adjusting part, makes the upper and lower position and the front and back position of back can adjust, has realized the support to doctor's waist on the one hand, has also further alleviateed doctor's tired sense, has improved the comfort level when sitting in.

4. The utility model discloses chair a microsurgery chair through setting up arm support adjustment mechanism and the spacing subassembly of mutually supporting, adjusts opening and shutting of two armrest components to can adjust the relative position between two layer boards according to concrete demand, further improve doctor and protected personnel's maneuverability space.

5. The utility model discloses chair a microsurgery chair through controlling the brake subassembly with the foot, has liberated doctor's both hands, has made things convenient for doctor to operating chair's controlling, realizes once braking along with stopping, has further ensured the stability of doctor when doing the operation or inspect.

Drawings

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

FIG. 2 is a side view of the overall structure of the present invention;

FIG. 3 is a side view of the present invention with the base housing removed;

FIG. 4 is a top view of the overall structure of the present invention;

FIG. 5 is a schematic view of the internal structure of the utility model with the base cover removed;

FIG. 6 is a schematic view of the structure of the middle armrest frame assembly of the present invention;

FIG. 7 is an exploded view of the middle armrest frame assembly of the present invention;

FIG. 8 is a schematic view of the connection between the middle arm support adjusting mechanism and the limiting mechanism of the present invention;

fig. 9 is an exploded view of the middle arm support adjusting mechanism and the limiting mechanism of the present invention;

FIG. 10 is a top view of the connecting structure of the T-shaped bottom plate and the brake assembly of the present invention;

fig. 11 isbase:Sub>A cross-sectional view taken along sectionbase:Sub>A-base:Sub>A of fig. 10;

FIG. 12 is an exploded view of the middle brake assembly of the present invention;

fig. 13 is a schematic view of the connection of the backrest adjustment assembly, the seat plate and the backrest of the present invention;

fig. 14 is a schematic structural view of the middle backrest support frame of the present invention;

fig. 15 is a schematic view of the connection between the self-adaptive elastic assembly of the backrest and the sliding seat of the present invention;

fig. 16 is an exploded view of the backrest adjustment assembly of the present invention;

fig. 17 is a schematic structural view of the middle guide assembly of the present invention;

fig. 18 is a schematic structural view of the base housing of the present invention.

In the drawings:

100. a base; 110. a T-shaped bottom plate; 120. a base housing;

200. a seat plate; 210. a cushion;

300. a seat plate adjusting mechanism; 310. a hydraulic lever; 320. a hydraulic cylinder; 330. a footrest assembly; 330-1, a first link assembly; 330-2, a second connecting rod assembly; 330-3, stepping on an ascending pedal; 330-4, stepping on a descending pedal; 340. a tension spring; 350. hooking; 360. a telescopic cover; 370. a cylinder block;

400. a armrest frame assembly; 410. a support plate; 420. rotating the stop-and-go assembly; 420-1, fixing plate; 420-1a, a rotation hole; 420-1b, a semicircular groove; 420-2, fixing the cover; 420-3, a first spring; 420-4, steel balls; 430. a support assembly; 430-1, outer pole; 430-2, a telescopic inner rod; 430-2a and a limit groove; 430-2b, a limiting hole; 430-3, a sleeve; 430-4, an index pin;

500. a backrest; 510. a backrest support frame; 510-1, a first limit chute; 510-2, a second limiting chute;

600. a caster wheel; 610. brake-by-wire truckles; 610-1 stud; 610-2, a wire rod;

700. a backrest adjustment assembly; 710. a sliding seat; 710-1, a sliding groove; 710-2, a first via; 720. A backrest chute seat; 720-1, a second through hole; 730. a longitudinal adjustment handle; 740. a lateral adjustment handle;

800. an arm support adjusting mechanism; 810. a handrail shaft head; 810-1, placing a groove; 820. a shaft sleeve; 830. a first annular member; 840. a clamp spring; 850. a damping screw; 860. a sealing cover;

900. a limiting component; 910. a brake ring; 910-1, a second ring member; 910-2, a first connection lug; 910-3, a second engaging lug; 920. a limiting block; 930. a fixed block; 940. a handrail brake lever;

1000. a brake assembly; 1010. a brake pedal; 1020. a rotating plate; 1020-1, arc-shaped through holes; 1030. a brake lever; 1040. a movable pin; 1050. a brake fixing threaded sleeve;

1100. a backrest adaptive elastic assembly; 1110. a connecting plate; 1120. an adjusting plate; 1120-1, adjusting holes; 1130. a pin shaft; 1140. a second spring; 1150. a hinge; 1160. a flange;

1200. a guide assembly; 1210. a slide rail fixing plate; 1220. a slide rail support; 1230. a linear guide assembly; 1240. a slider; 1250. a slide rail reinforcing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Fig. 1 to 7 are schematic structural views illustrating an embodiment of a microsurgical chair according to the present invention, the main body of which includes a base 100, a seat 200, a seat adjusting mechanism 300, an armrest frame assembly 400, a backrest 500 and casters 600.

The base 100 is used for supporting the seat plate 200, and comprises a T-shaped bottom plate 110 and a base cover 120 located above the T-shaped bottom plate 110, wherein the base cover 120 is integrally shaped to fit the T-shaped bottom plate 110 and fixed to the top end of the T-shaped bottom plate 110, and the outer surface of the base cover 120 is treated by baking varnish.

The seat plate 200 is used for the doctor to sit on and is positioned above the base 100. Preferably, in the present embodiment, in order to improve comfort during sitting, a seat cushion 210 is provided at the top end of the seat plate 200, the seat cushion 210 has a drop-shaped cross section, and one end of the tip of the seat cushion 210 is provided toward the end away from the backrest 500. The cushion 210 is made of slow-rebound memory sponge conforming to the curved surface shape of the corresponding part of the human body and artificial leather made of PU material covered on the outer surface of the slow-rebound memory sponge, and the seam adopts seamless hot-melting technology.

The seat plate adjusting mechanism 300 is located between the base 100 and the seat plate 200, and is used for adjusting the lifting of the seat plate 200. In this embodiment, the seat plate adjustment mechanism 300 includes a hydraulic lever 310, a hydraulic ram 320, and a footrest assembly 330. One end of the hydraulic rod 310 is connected with the bottom of the seat plate 200, the hydraulic cylinder 320 is located at the top end of a cylinder seat 370 arranged at the top end of the base 100 to drive the hydraulic rod 310 to move up and down, the pedal assembly 330 is used for driving the hydraulic cylinder 320 to work, and comprises a first link assembly 330-1 and a second link assembly 330-2 which are respectively connected with two ends of the hydraulic cylinder 320, a foot-operated ascending pedal 330-3 is arranged above one side of the first link assembly 330-1 located at the front end of the base 100, and a foot-operated descending pedal 330-4 is arranged above the other side of the second link assembly 330-2 located at the front end of the base 100. When the chair is used, when the first connecting rod assembly 330-1 is driven to move by stepping on the ascending pedal 330-3, the hydraulic cylinder 320 drives the hydraulic rod 310 to ascend so as to drive the seat board 200 connected with the hydraulic rod 310 to ascend, and when the second connecting rod assembly 330-2 is driven to move by stepping on the descending pedal 330-4, the hydraulic cylinder 320 drives the hydraulic rod 310 to descend so as to drive the seat board 200 connected with the hydraulic rod 310 to descend. It should be noted that the seat plate adjusting mechanism 300 used in this embodiment is based on the application of the prior art, and the specific structure is not described again, and the up-down movement stroke of the hydraulic rod 310 is 0 to 16CM, and in addition, the seat plate adjusting mechanism 300 is not limited to the lifting device described in this embodiment, and any other lifting mechanism that can drive the seat plate 200 to move up and down may be used.

Preferably, in the present embodiment, a bellows cover 360 is fitted around the outer circumferential wall of the hydraulic rod 310 for dust prevention and appearance, one end of the bellows cover 360 is connected to the bottom of the seat plate 200, and the other end of the bellows cover 360 is fixedly connected to the inner wall of a hole formed above the base housing 120.

Preferably, in the present embodiment, in order to improve the recognition degree and facilitate the accurate operation of the pedals by the physician, the tip of the step-up pedal 330-3 is provided with an upward arrow mark, and the tip of the step-down pedal 330-4 is provided with a downward arrow mark.

The armrest frame assembly 400 is divided into left and right ends positioned at the seat plate 200 for supporting the arms of the medical staff. In this embodiment, the armrest frame assembly 400 includes a supporting plate 410, a rotating and stopping assembly 420 capable of driving the supporting plate 410 to rotate and stop, and a supporting assembly 430 for supporting the supporting plate 410, which are sequentially disposed from top to bottom, and the bottom end of the supporting assembly 430 is connected to the seat plate 200. Preferably, in the present embodiment, in order to further fit the arms of the doctor, increase the wrapping feeling, and prevent the elbows from slipping off the support plate 410, the support plate 410 is formed in an arc shape having a lower middle and two higher sides, that is, the top end of the support plate 410 is formed in a shape gradually increasing from the middle to the two sides along the longitudinal direction of the support plate 410.

Specifically, the rotation stop-and-go assembly 420 includes a fixed plate 420-1, a fixed cage 420-2, a first spring 420-3, and a steel ball 420-4. The fixing plate 420-1 is fixed in a groove at the bottom of the supporting plate 410, the fixing cover 420-2 is located below the fixing plate 420-1, the top end of the fixing cover 420-2 is connected with a flange, the flange and the top end of the fixing cover 420-2 form a step, the bottom end of the fixing cover 420-2 is fixedly connected with the top end of the supporting component 430, one end of the first spring 420-3 is fixed on the step formed by the fixing cover 420-2 and the flange, the steel ball 420-4 is fixedly connected with the other end of the first spring 420-3, one end of the fixing plate 420-1 close to the fixing cover 420-2 is provided with a rotating hole 420-1a matched with the outer diameter of the flange, more than 2 semicircular grooves 420-1b are arranged along the circumferential direction of the rotating hole 420-1a, the outer circumferential wall of the flange is abutted against a screw penetrating through the inner wall of the rotating hole 420-1a, and when the supporting plate 410 rotates horizontally, the steel ball 420-4 slides in the semicircular grooves 420-1b in sequence. When the self-locking support plate 410 is used, the support plate 410 is horizontally rotated to drive the first spring 420-3 to compress and prop the steel ball 420-4 to do circular motion along the semicircular groove 420-1b arranged along the circumferential direction of the rotating hole 420-1a, when the steel ball moves to one semicircular groove 420-1b, the steel ball 420-4 can be propped into one semicircular groove 420-1b by the first spring 420-3 to realize the self-locking of the support plate 410, and when the support plate 410 is continuously rotated, the steel ball 420-4 slides out of the semicircular groove 420-1 b. Preferably, in the present embodiment, 10 semicircular grooves 420-1b are provided, and are arranged at equal intervals along the circumferential direction of the rotating hole 420-1a, so as to realize 10-level self-locking positioning, and thus, 360-degree rotation self-locking of the support 410 in the horizontal direction is realized, and thus, the position angle of the support plate 410 can be adjusted according to specific requirements, and thus, accurate operation of the arms of both hands of the surgeon is maintained.

The backrest 500 is used for supporting the back of the doctor when the doctor sits in the seat, the backrest 500 is arranged above the seat plate 200 through a backrest support frame 510, one end of the backrest support frame 510 is connected with the back of the backrest 500, and the other end of the backrest support frame 510 is connected with the bottom of the seat plate 200. Preferably, in the present embodiment, the front end of the backrest 500 is designed to be curved backward so as to further fit the lumbar back of the medical staff.

The caster 600 is located under the base 100 and is in rolling connection with the bottom end of the base 100. Preferably, in the present embodiment, the number of the casters 600 is 3, and the casters are disposed below the free ends of the T-shaped base 1103.

With reference to fig. 1 to 7, the microsurgical chair of the present embodiment has the following specific use process:

firstly, a doctor sits on the seat board 200, and drives the hydraulic oil cylinder 320 to work by stepping on the ascending pedal 330-3 or stepping on the descending pedal 330-4 by feet according to the height or different use scenes, so as to drive the seat board 200 connected with the hydraulic rod 310 to move up and down, and realize the height adjustment of the seat board 200 from the ground. The physician then rotates the platform 410 horizontally to the appropriate position angle, as required by the particular procedure or examination.

Example 2

As shown in fig. 6 and 7, in embodiment 2, on the basis of embodiment 1, in order to adjust the height of the supporting plate 410 from the ground, so as to further expand the use range of medical staff during the operation, the length of the supporting assemblies 430 is set to be adjustable, each group of supporting assemblies 430 includes an outer rod 430-1 and a telescopic inner rod 430-2 capable of extending and retracting up and down in the outer rod 430-1, the top end of the telescopic inner rod 430-2 is fixedly connected with the bottom of the rotation stop-and-go assembly 420, and one end of the outer rod 430-1, which is far away from the telescopic inner rod 430-2, is connected with the bottom of the seat plate 200. A sleeve 430-3 is connected between the outer rod 430-1 and the telescopic inner rod 430-2, the outer wall of the sleeve 430-3 is connected with an indexing pin 430-4, one end of the indexing pin 430-4, which is positioned on the handle, is positioned on the outer wall of the sleeve 430-3, the other end of the indexing pin 430-4 transversely penetrates through the outer wall of the sleeve 430-3 and is positioned in the sleeve 430-3, limiting grooves 430-2a are respectively formed in the outer walls of the two telescopic inner rods 430-2 along the length direction of the telescopic inner rod 430-2, and a plurality of limiting holes 430-2b matched with the indexing pin 430-4 are uniformly formed in the limiting grooves 430-2 a. When the telescopic inner rod 430-2 is used, the extending height of the telescopic inner rod 430-2 in the outer rod 430-1 can be adjusted according to specific requirements, so that the height of the supporting plate 410 from the ground is adjusted, the up-and-down moving stroke of the telescopic inner rod 430-2 is 0-19CM, when the handle of the indexing pin 430-4 is pulled to move towards the direction far away from the sleeve 430-3, the telescopic inner rod 430-2 can slide up and down in the outer rod 430-1, when the handle of the indexing pin 430-4 moves towards the direction close to the sleeve 430-3 under the action of the spring, the other end of the indexing pin 430-4 far away from the handle of the indexing pin 430-4 is abutted against one limiting hole 430-2b in the telescopic inner rod 430-2, and at the moment, the height of the telescopic inner rod 430-2 is limited. When the height is adjusted by the index pin 430-4, the button of the index pin 430-4 can be pressed first to adjust the rotation direction so as to adapt to different postures.

Preferably, in the present embodiment, the armrest frame assembly 400 has a t-shaped longitudinal section as a whole, and the lower end of the outer rod 430-1 is bent in a radius such that a certain horizontal distance is left between the outer rod 430-1 and the seat plate 200. It should be noted that the supporting assembly 430 is not limited to the embodiment described above in which the height of the supporting plate 410 is adjusted by adjusting the extension and retraction of the inner telescopic rod 430-2 in the outer rod 430-1 through the indexing pin 430-4, and any other structure such as a threaded connection between the inner telescopic rod 430-2 and the outer rod 430-1, or a snap-fit connection for adjusting the extension and retraction of the inner telescopic rod 430-2 in the outer rod 430-1 may be used.

Example 3

As shown in fig. 3 and 17, in embodiment 3, based on embodiment 1, in order to make the ascending and descending of the seat board 200 more stable when the seat board adjusting mechanism 300 adjusts the ascending and descending of the seat board 200, a guide assembly 1200 moving synchronously with the hydraulic rod 310 is further provided between the base 100 and the seat board 200. Specifically, the guide assembly 1200 includes a slide rail fixing plate 1210, slide rail supports 1220 located on one end surface of the slide rail fixing plate 1210 and disposed oppositely, a linear guide rail assembly 1230 located between the two slide rail supports 1220 and capable of moving up and down, and a slider 1240 connected to a slider of the linear guide rail assembly 1230, wherein a top end of the slider 1240 is connected to the bottom of the seat plate 200, each slide rail support 1220 is fixedly connected to the top of the base 100, respectively, and a guide rail of the linear guide rail assembly 1230 is connected to the slide rail fixing plate 1210. When the hydraulic cylinder 320 drives the hydraulic rod 310 to move up and down, the slider 1240 drives the slider of the linear guide rail assembly 1230 to slide up and down on the fixed block of the linear guide rail assembly 1230, so that the unstable seat plate 200 is avoided when the hydraulic rod 310 works independently.

Example 4

As shown in fig. 3, 5, and 17, in embodiment 4, based on embodiment 3, in order to have a traction force to drive the first link assembly 330-1 and the second link assembly 330-2 to reset when the foot-operated ascending pedal 330-3 and the foot-operated descending pedal 330-4 respectively drive the first link assembly 330-1 and the second link assembly 330-2 to move, a tension spring 340 is connected to an outer side of each of the slide rail supports 1220, each of the first link assembly 330-1 and the second link assembly 330-2 is provided with a hook 350, the other end of each of the tension springs 340 is connected to the hook 350 located on the same side, and the first link assembly 330-1 and the second link assembly 330-2 are reset at the first time by a tension force of the tension spring 340.

Example 5

As shown in fig. 2, 3, 5, 13 and 14, in example 5, in addition to example 1, in order to adjust the up-down position and the front-back position of the backrest 500 according to different needs, support the waist of a doctor is realized, fatigue of the doctor is reduced, and comfort in sitting is further improved, and a backrest adjusting assembly 700 is added. In this embodiment, the backrest adjustment assembly 700 includes a sliding seat 710 disposed at the rear end of the backrest 500, a backrest sliding groove seat 720 disposed at the bottom end of the seat plate 200 along the front-rear direction of the seat plate 200, a longitudinal adjustment handle 730 for controlling the sliding seat 710 to move up and down, and a transverse adjustment handle 740 for controlling the backrest support frame 510 to slide back and forth, one end of the backrest support frame 510 penetrates through a sliding groove 710-1 disposed at the top end of the sliding seat 710 and then is slidably connected with the sliding seat 710 up and down, and the other end of the backrest support frame 510 is slidably connected back and forth along the backrest sliding groove seat 720. Specifically, the longitudinal section of the backrest support frame 510 is L-shaped, one end of the backrest support frame 510 is provided with a first limiting sliding groove 510-1 along the length direction of the backrest support frame 510, and the other end of the backrest support frame 510 is provided with a second limiting sliding groove 510-2 along the length direction of the backrest support frame 510. A first through hole 710-2 is formed in one end face, away from the backrest 500, of the sliding seat 710, a second through hole 720-1 is formed in the bottom end of the backrest sliding groove seat 720, the longitudinal adjusting handle 730 sequentially passes through the first through hole 710-2 and the first limiting sliding groove 510-1 and then is movably connected with the sliding seat 710, and the transverse adjusting handle 740 sequentially passes through the second through hole 720-1 and the second limiting sliding groove 510-2 and then is movably connected with the seat plate 200. In use, the longitudinal adjusting handle 730 is screwed and unscrewed to adjust the lifting of the sliding seat 710 on the backrest support frame 510, so as to adjust the lifting of the backrest 500 connected with the sliding seat 710, and the transverse adjusting handle 740 is screwed and unscrewed to adjust the front and back movement of the backrest support frame 510 on the backrest chute seat 720, so as to adjust the front and back position of the backrest 500 connected with the sliding seat 710. The maximum lifting travel stroke of the backrest 500 is 16CM, and the maximum forward and backward movement travel stroke of the backrest 500 is 15CM.

Preferably, in the present embodiment, a free end of the backrest support frame 510 is bent at a lower portion of the first stopper chute 510-1 so that the slide holder 710 does not slide down to the connecting end of the L-shaped backrest support frame 510. In addition, both free ends of the backrest support frame 510 are blunt-edged to prevent scratching of the hands of the physician.

Example 6

As shown in fig. 15 and 16, in embodiment 6, in addition to embodiment 5, a back rest adaptive elastic unit 1100 is provided between the back rest 500 and the sliding seat 710 in order to adjust the pitch angle of the back rest 500 and further improve comfort when seated. The sliding seat 710 is opened near one end surface of the backrest adaptive elastic assembly 1100 and is provided with an accommodating cavity for placing the backrest adaptive elastic assembly 1100, and the backrest adaptive elastic assembly 1100 comprises a connecting plate 1110, an adjusting plate 1120, a pin 1130, a second spring 1140 and a hinge 1150 for connecting the connecting plate 1110 and the adjusting plate 1120. One end face of the connecting plate 1110 is fixed on the back face of the backrest 500, the adjusting plate 1120 is fixed in the accommodating cavity of the sliding seat 710, the pin 1130 is transversely located between the connecting plate 1110 and the adjusting plate 1120, one end of the adjusting plate 1120, which is close to the connecting plate 1110, is provided with an adjusting hole 1120-1 through which one end of the pin 1130 penetrates, one end of the pin 1130 is located in the adjusting hole 1120-1, and the other end of the pin 1130 is fixedly connected with the connecting plate 1110. The second spring 1140 is located between the connecting plate 1110 and the adjusting plate 1120 and sleeved on the pin 1130, the hinge 1150 is located between the connecting plate 1110 and the adjusting plate 1120, one end of the hinge 1150 is connected with the connecting plate 1110, and the other end of the hinge 1150 is connected with the adjusting plate 1120. When the backrest is used, after a doctor sits in, the back leans against the backrest 500, a thrust is given to the backrest 600, the connecting plate 1110 connected with the backrest 500 moves towards the direction close to the adjusting plate 1120, at the moment, one end, located in the adjusting hole 1120-1, of the pin shaft 1130 moves towards the direction far away from the connecting plate 1110, the second spring 1140 is extruded by the connecting plate 1110 and the adjusting plate 1120 to generate elastic deformation, so that the backrest 500 is flexibly connected with the backrest support frame 510, the adjustment of the pitching angle of the backrest 500 connected with the connecting plate 1110 is driven, the wrapping feeling is increased by fitting the body, the comfort degree during sitting is further improved, and the lumbar pressure and the back muscle strain of the doctor are relieved.

Preferably, in this embodiment, a flange 1160 is connected to an end of the pin 1130 adjacent to the adjustment plate 1120, and the other end of the flange 1160 abuts against the adjustment plate 1120 and is located at an edge of the adjustment hole 1120-1, so that when the second spring 1140 is compressed, a guiding force is applied to the second spring 1140, so that the second spring 1140 moves between the connection plate 1110 and the adjustment plate 1120 more stably. In this embodiment, the adjusting plate 1120 is a steel plate with a certain thickness, in a normal state that the connecting plate 1110 does not move towards the adjusting plate 1120 and in a state that the connecting plate 1110 moves towards the adjusting plate 1120, one end of the pin 1130 close to the adjusting plate 1120 is located in an adjusting hole 1120-1 formed in the adjusting plate 1120, and the second spring 1140 is also located between the adjusting plate 1120 and the connecting plate 1110 all the time. In this embodiment, in order to further increase the adjustment amplitude, the pin 1130, the second spring 1140 and the flange 1160 are arranged in 2 groups, which are respectively located at the upper and lower sides of the hinge 1150.

Example 7

As shown in fig. 8 and 9, in embodiment 7, based on embodiment 1, in order to enable the supporting plates 410 at the top ends of the two sets of supporting members 430 to approach or separate from each other, that is, to adjust the relative position between the two supporting plates 410 by adjusting the opening and closing of the two sets of supporting members 430, so as to further improve the maneuverability space of the medical staff, an arm support adjusting mechanism 800 is provided at the bottom end of the supporting members 430, and each set of arm support adjusting mechanism 800 includes an armrest shaft head 810, a shaft sleeve 820, a first ring 830 and a snap spring 840. The armrest shaft heads 810 are fixed at the left end and the right end of the bottom of the seat board 200 and are close to the front of the seat board 200, the armrest shaft heads 810 are far away from the outer wall of one end of the seat board 200 and are provided with placing grooves 810-1 along the circumferential direction of the armrest shaft heads 810, the shaft sleeve 820 is sleeved on the outer circumferential wall of the armrest shaft heads 810 and is rotatably connected with the armrest shaft heads 810, and the outer wall of the shaft sleeve 820 is fixedly connected with one end, far away from the supporting plate 410, of the supporting component 430. One end of the first ring-shaped member 830 is located in the shaft sleeve 820 and is fixedly connected with the inner wall of the shaft sleeve 820, the other end of the first ring-shaped member 830 extends upwards to be located above the shaft sleeve 820 and is movably sleeved on the outer circumferential wall of the handrail shaft head 810, a first annular step is formed between the top end of the first ring-shaped member 830 and the top end of the shaft sleeve 820, a second annular step is formed between the bottom end of the first ring-shaped member 830 and the inner wall of the shaft sleeve 820, the clamp spring 840 is located in the placement groove 810-1 of the handrail shaft head 810, and the clamp spring 840 is located below the second annular step and is used for clamping the shaft sleeve 820 connected with the first ring-shaped member 830. When the chair is used, the supporting components 430 are pushed to drive the shaft sleeve 820 connected with the outer rod 430-1 to rotate around the outer wall of the armrest shaft head 810, so that the two groups of supporting components 430 are opened and closed, the two supporting plates 410 positioned at the left side and the right side of the sitting plate 200 are close to or far away from each other, the maneuverability space of a doctor is improved, and the maximum rotation angle of the two groups of supporting components 430 is 185 degrees. Preferably, in the present embodiment, a sealing cover 860 is coupled to a bottom end of each of the bosses 820 to prevent dust from entering.

Preferably, in the present embodiment, in order to adjust the resistance when the boss 820 rotates with respect to the armrest shaft head 810, a damping screw 850 is movably connected to an outer wall of the boss 820, and the other end of the damping screw 850 penetrates through the boss 820 and the outer wall of the first ring 830 in sequence and then abuts against the outer wall of the armrest shaft head 810. In use, the pressure of the damping screw 850 against the armrest shaft head 810 may be adjusted to generate a certain frictional resistance when the shaft sleeve 820 rotates, thereby preventing the support assembly 430 connected to the outer wall of the shaft sleeve 820 from being too flexible in rotation.

Example 8

As shown in fig. 8 and 9, in embodiment 8, in addition to embodiment 7, in order to limit the arm support adjusting mechanisms 800 whose angles are adjusted, and to ensure the stability of a doctor during an operation or an examination, a limiting assembly 900 for limiting the arm support adjusting mechanisms 800 at both ends is added. Each set of limiting components 900 comprises a brake ring 910, a limiting block 920, a fixing block 930 and an armrest brake lever 940. The brake ring 910 includes a second ring member 910-1 with an opening, a first connecting lug 910-2 disposed at a first free end of the second ring member 910-1, and a second connecting lug 910-3 disposed at a second free end of the second ring member 910-1, the second ring member 910-1 is sleeved on an outer peripheral wall of the first ring member 830 and located on a first annular step, a limiting block 920 is located at one side of the first connecting lug 910-2 and rotatably connected with the bottom of the seat plate 200, a fixing block 930 is located at one side of the second connecting lug 910-3 and fixedly connected with the bottom of the seat plate 200, and an armrest brake lever 940 is fixed at one end outside the limiting block 920. When the arm support adjusting mechanism 800 is used, when the armrest brake lever 940 is pushed to drive one end of the limiting block 920 to abut against the first connecting lug 910-2, the first connecting lug 910-2 and the second connecting lug 910-3 are close to each other, and the second ring piece 910-1 is locked with the first ring piece 830, so that the limiting of the shaft sleeve 820 connected with the first ring piece 830 is realized, and the limiting of the opening and closing angle of the arm support adjusting mechanism 800 is finally realized. When the handle bar 940 drives one end of the limiting block 920 to be separated from the first connecting lug 910-2, the first connecting lug 910-2 and the second connecting lug 910-3 are separated from each other, and the second ring member 910-1 is separated from the first ring member 830.

Example 9

As shown in fig. 10, 11, and 12, in embodiment 9, on the basis of embodiment 1, in order to liberate the hands of the doctor, facilitate the doctor to operate the surgical chair, realize one-time braking and stopping, further ensure the stability of the doctor during the operation or the examiner, and add the brake assembly 1000. The caster 600 positioned in front of the T-shaped base plate 110 is a brake-by-wire caster 610, and the brake assembly 1000 is operated to lock or unlock the brake-by-wire caster 610. Specifically, the brake assembly 1000 includes a brake pedal 1010, a rotating plate 1020, a brake lever 1030, a movable pin 1040, and a brake fixing screw 1050. The brake pedal 1010 is preferably provided for a doctor to step on by feet, in the embodiment, the brake pedal 1010 is designed to be in a foot shape with a wide front part and a narrow back part, and anti-skidding structures in other shapes such as cross grains or curved ripples are added on the surface of the brake pedal 1010, so that the anti-skidding structure is effective in skid resistance, the stress area of the sole part is uniform, and the comfort level of the sole part is improved. It should be understood, however, that the present novel anti-slip structure is not limited to the specific examples described above, as long as the anti-slip function is ensured. The rotating plates 1020 are located at the bottom end of the brake pedal 1010 and are oppositely arranged left and right, arc-shaped through holes 1020-1 are formed in each rotating plate 1020 along the length direction of the rotating plates 1020, the brake rod 1030 is located between the two rotating plates 1020, a movable pin 1040 transversely penetrates through the top end of the brake rod 1030, two ends of the movable pin 1040 are connected with the arc-shaped through holes 1020-1 in the two sides in a front-back sliding mode, the brake fixing threaded sleeve 1050 is located at the top end of the base 100, the left end and the right end of the brake fixing threaded sleeve 1050 are respectively connected with the rotating plates 1020 located on the same side in a movable mode, a stud 610-1 at the top end of the brake-by-wire caster 610 penetrates through the bottom of the T-shaped bottom plate 110 and then is connected with the brake fixing threaded sleeve 1050, and the bottom of the brake rod 1030 penetrates through the top end of the brake fixing threaded sleeve 1050 and then is connected with a wire rod 610-2 of the brake-by-wire caster 610 located in the brake fixing threaded sleeve 1050. When the brake pedal 1010 is used, when the front end of the brake pedal 1010 is stepped, the movable pin 1040 is located at the rear end of the arc-shaped through hole 1020-1, the movable pin 1040 drives the brake rod 1030 to move upwards along the axial direction of the brake fixing threaded sleeve 1050, so that the wire rod 610-2 of the brake-by-wire caster 610 connected with the brake rod 1030 is driven to move upwards, a brake pad inside the brake-by-wire caster 610 is driven to be pulled, and the brake-by-wire caster 610 is locked to realize one-foot braking. Similarly, when the rear end of the brake pedal 1010 is stepped on, the movable pin 1040 is located at the front end of the arc-shaped through hole 1020-1, the movable pin 1040 drives the brake rod 1030 to move downwards along the axial direction of the brake fixing threaded sleeve 1050, and drives the wire rod 610-2 of the brake-by-wire caster 610 connected with the brake rod 1030 to move downwards, so that a brake pad inside the brake-by-wire caster 610 is released, the brake-by-wire caster 610 is unlocked, and brake release by one foot is realized. Preferably, in this embodiment, in order to maintain the stability of the brake fixing screw 1050 during the up and down movement of the brake lever 1030, a clamping member for clamping the brake fixing screw 1050 may be added, and the other end of the clamping member is connected to the top end of the base 100.

Preferably, in the present embodiment, a lock mark is provided at a position on the top of the brake pedal 1010 near the front, and an unlock mark is provided at a position on the top of the brake pedal 1010 near the rear, so as to prevent an erroneous operation by a doctor.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (13)

1. A microsurgical chair, comprising:

a base (100);

a seat plate (200) located above the base (100);

the seat plate adjusting mechanism (300) is positioned between the base (100) and the seat plate (200) and is used for adjusting the lifting of the seat plate (200);

the armrest frame assembly (400) is respectively positioned at the left end and the right end of the seat plate (200) and used for supporting the arms or elbows of medical staff, the armrest frame assembly (400) comprises a supporting plate (410), a rotation stopping assembly (420) capable of driving the supporting plate (410) to rotate and stop and a supporting assembly (430) for supporting the supporting plate (410), which are sequentially arranged from top to bottom, and the bottom end of the supporting assembly (430) is connected with the seat plate (200);

the backrest (500) is arranged above the seat plate (200) through a backrest support frame (510), one end of the backrest support frame (510) is connected with the back surface of the backrest (500), and the other end of the backrest support frame (510) is connected with the bottom of the seat plate (200);

and the caster (600) is positioned below the base (100) and is connected with the bottom end of the base (100) in a rolling way.

2. The microsurgical chair according to claim 1, wherein the rotary stop-and-go assembly (420) comprises:

a fixing plate (420-1) fixed in the bottom groove of the supporting plate (410),

the fixed cover (420-2) is positioned below the fixed plate (420-1), the top end of the fixed cover (420-2) is connected with a flange, the flange and the top end of the fixed cover (420-2) form a step, and the bottom end of the fixed cover (420-2) is fixedly connected with the top end of the supporting component (430);

a first spring (420-3) having one end fixed to a step formed by the fixing cap (420-2) and the flange;

a steel ball (420-4) fixedly connected to the other end of the first spring (420-3);

one end of the fixing plate (420-1) close to the fixing cover (420-2) is provided with a rotating hole (420-1 a) matched with the outer diameter of the flange, more than 2 semicircular grooves (420-1 b) are formed in the circumferential direction of the rotating hole (420-1 a), and the outer circumferential wall of the flange is abutted to a screw penetrating through the inner wall of the rotating hole (420-1 a);

when the supporting plate (410) rotates horizontally, the steel balls (420-4) slide in the plurality of semi-circular grooves (420-1 b) in sequence.

3. A microsurgical chair as claimed in claim 2, wherein: the number of the semicircular grooves (420-1 b) is 10, and the semicircular grooves are arranged at equal intervals along the circumferential direction of the rotating hole (420-1 a).

4. The microsurgical chair of claim 1, wherein the seat plate adjustment mechanism (300) comprises:

a hydraulic rod (310) having one end connected to the bottom of the seat plate (200);

the hydraulic oil cylinder (320) is positioned at the top end of an oil cylinder seat (370) arranged at the top end of the base (100) and is used for driving the hydraulic rod (310) to move up and down;

the pedal assembly (330) is used for driving the hydraulic oil cylinder (320) to work and comprises a first connecting rod assembly (330-1) and a second connecting rod assembly (330-2) which are respectively connected with the two ends of the hydraulic oil cylinder (320), a foot-stepping ascending pedal (330-3) is arranged above one side of the front end of the base (100) of the first connecting rod assembly (330-1), and a foot-stepping descending pedal (330-4) is arranged above the other side of the front end of the base (100) of the second connecting rod assembly (330-2);

when the foot-stepping ascending pedal (330-3) drives the first connecting rod assembly (330-1) to move, the hydraulic oil cylinder (320) drives the hydraulic rod (310) to ascend, and when the foot-stepping descending pedal (330-4) drives the second connecting rod assembly (330-2) to move, the hydraulic oil cylinder (320) drives the hydraulic rod (310) to descend.

5. A microsurgical chair as claimed in claim 1, wherein: still be provided with between base (100) and seat (200) with hydraulic stem (310) simultaneous movement's direction subassembly (1200), direction subassembly (1200) include slide rail fixed plate (1210), be located slide rail support (1220) that a terminal surface and the relative setting of slide rail fixed plate (1210), but be located two slide rail supports (1220) linear guide subassembly (1230) that just up-and-down motion and slider (1240) of being connected with linear guide subassembly (1230) sliding block, the top of slider (1240) with the bottom of seat (200) is connected, every slide rail support (1220) respectively with the top fixed connection of base (100), the guide rail and the slide rail fixed plate (1210) of linear guide subassembly (1230) are connected.

6. A microsurgical chair as claimed in claim 1, wherein: the base (100) includes T shape bottom plate (110) and is located base housing (120) that T shape bottom plate (110) top can be supplied liquid pressure pole (310) to run through, the periphery wall cover of hydraulic stem (310) is equipped with flexible cover of ripple (360), the one end of flexible cover of ripple (360) with the bottom of seat (200) is connected, the inner wall fixed connection of the hole that the other end of flexible cover of ripple (360) and base housing (120) top were seted up.

7. A microsurgical chair as claimed in claim 1, wherein: each group of support assemblies (430) comprises an outer rod (430-1) and a telescopic inner rod (430-2) capable of extending up and down in the outer rod (430-1), the top end of the telescopic inner rod (430-2) is fixedly connected with the bottom of the rotary stop-and-go assembly (420), and one end, far away from the telescopic inner rod (430-2), of the outer rod (430-1) is connected with the bottom of the seat plate (200).

8. The microsurgical chair of claim 7 wherein: a sleeve (430-3) is connected between the outer rod (430-1) and the telescopic inner rod (430-2), the outer wall of the sleeve (430-3) is connected with an indexing pin (430-4), one end of the indexing pin (430-4) located on the outer wall of the sleeve (430-3) is located at one end of the handle, the other end of the indexing pin (430-4) transversely penetrates through the outer wall of the sleeve (430-3) and then is located in the sleeve (430-3), limiting grooves (430-2 a) are formed in the outer walls of the two telescopic inner rods (430-2) along the length direction of the telescopic inner rod (430-2), and a plurality of limiting holes (430-2 b) matched with the indexing pin (430-4) are uniformly formed in the limiting grooves (430-2 a),

when the handle of the indexing pin (430-4) moves towards the direction far away from the sleeve (430-3), the telescopic inner rod (430-2) can slide up and down in the outer rod (430-1), and when the handle of the indexing pin (430-4) moves towards the direction close to the sleeve (430-3), one end, far away from the handle of the indexing pin (430-4), of the indexing pin (430-4) is abutted to one limiting hole (430-2 b).

9. A microsurgical chair as claimed in claim 1, wherein: still include back adjustment assembly (700), back adjustment assembly (700) is including setting up sliding seat (710) at back (500) rear end, be located seat (200) bottom along back sliding groove seat (720) that seat (200) fore-and-aft direction set up, vertical adjustment handle (730) that control sliding seat (710) goes up and down and control back support frame (510) horizontal adjustment handle (740) of gliding, sliding groove (710-1) back and sliding seat (710) that the top of sliding seat (710) set up are run through to the one end of back support frame (510) are sliding connection from top to bottom, the other end of back support frame (510) is along back sliding groove seat (720) front and back sliding connection.

10. A microsurgical chair as claimed in claim 1, wherein: also comprises arm support adjusting mechanisms (800) which are respectively arranged at the lower ends of the seat plates (200) and enable the supporting components (430) at the two ends of the seat plates (200) to be close to or far away from each other, each group of arm support adjusting mechanisms (800) comprises,

the armrest shaft heads (810) are symmetrically fixed at the left end and the right end of the bottom of the seat plate (200) and are close to the front of the seat plate (200), and the armrest shaft heads (810) are far away from the outer wall of one end of the seat plate (200) and are provided with placing grooves (810-1) along the circumferential direction of the armrest shaft heads (810);

the shaft sleeve (820) is sleeved on the peripheral wall of the handrail shaft head (810) and is rotationally connected with the handrail shaft head (810), and the outer wall of the shaft sleeve (820) is fixedly connected with one end, far away from the supporting plate (410), of the supporting component (430);

the first ring-shaped piece (830) is positioned in the shaft sleeve (820) at one end and fixedly connected with the inner wall of the shaft sleeve (820), the other end extends upwards to be positioned above the shaft sleeve (820) and movably sleeved on the outer peripheral wall of the handrail shaft head (810), a first annular step is formed by the top end of the first ring-shaped piece (830) and the top end of the shaft sleeve (820), and a second annular step is formed by the bottom end of the first ring-shaped piece (830) and the inner wall of the shaft sleeve (820);

the outer wall swing joint of axle sleeve (820) has damping screw (850), the other end of damping screw (850) runs through axle sleeve (820) and the outer wall of first loop forming element (830) in proper order after inconsistent with the outer wall of handrail spindle nose (810).

11. A microsurgical chair as claimed in claim 1, wherein: also comprises limiting components (900) for limiting the arm support adjusting mechanisms (800) at the two ends respectively, each group of limiting components (900) comprises,

the brake ring (910) comprises a second ring-shaped element (910-1) with an opening, a first connecting lug (910-2) arranged at a first free end of the second ring-shaped element (910-1) and a second connecting lug (910-3) arranged at a second free end of the second ring-shaped element (910-1), wherein the second ring-shaped element (910-1) is sleeved on the outer peripheral wall of the first ring-shaped element (830) and is positioned on the first annular step;

the limiting block (920) is positioned at one side of the first connecting ear (910-2) and is rotatably connected with the bottom of the seat plate (200);

the fixing block (930) is positioned on one side of the second connecting lug (910-3) and is fixedly connected with the bottom of the seat plate (200);

the armrest brake lever (940) is fixed at one end of the outer side of the limiting block (920);

when the armrest brake lever (940) drives one end of the limiting block (920) to abut against the first connecting lug (910-2), the first connecting lug (910-2) and the second connecting lug (910-3) are close to each other, the second annular member (910-1) is locked with the first annular member (830), when the armrest brake lever (940) drives one end of the limiting block (920) to be separated from the first connecting lug (910-2), the first connecting lug (910-2) and the second connecting lug (910-3) are far away from each other, and the second annular member (910-1) is separated from the first annular member (830).

12. The microsurgical chair of claim 7 wherein: the number of the caster wheels (600) is 3, the brake assembly (1000) for controlling the brake-by-wire caster wheels (610) is also included, the brake assembly (1000) comprises,

a brake pedal (1010);

the rotating plates (1020) are positioned at the bottom end of the brake pedal (1010) and are oppositely arranged left and right, and each rotating plate (1020) is provided with an arc-shaped through hole (1020-1) along the length direction of the rotating plate (1020);

the brake lever (1030) is positioned between the two rotating plates (1020), the top end of the brake lever (1030) is transversely provided with a movable pin (1040) in a penetrating mode, and the two ends of the movable pin (1040) are connected with the arc-shaped through holes (1020-1) on the two sides in a front-back sliding mode;

the brake fixing threaded sleeve (1050) is positioned at the top end of the base (100), the left end and the right end of the brake fixing threaded sleeve (1050) are movably connected with the rotating plate (1020) positioned on the same side respectively, a stud (610-1) at the top end of the brake-by-wire caster (610) penetrates through the bottom of the T-shaped bottom plate (110) and then is connected with the brake fixing threaded sleeve (1050), and the bottom of the brake rod (1030) penetrates through the top end of the brake fixing threaded sleeve (1050) and then is connected with a wire rod (610-2) of the brake-by-wire caster (610) positioned in the brake fixing threaded sleeve (1050);

when the front end of the brake pedal (1010) is trampled, the movable pin (1040) drives the brake rod (1030) to move upwards along the axial direction of the brake fixing threaded sleeve (1050) to drive the wire rod (610-2) of the wire control brake caster (610) connected with the brake rod (1030) to move upwards, the wire control brake caster (610) is locked, when the rear end of the brake pedal (1010) is trampled, the movable pin (1040) drives the brake rod (1030) to move downwards along the axial direction of the brake fixing threaded sleeve (1050) to drive the wire rod (610-2) of the wire control brake caster (610) connected with the brake rod (1030) to move downwards, and the wire control brake caster (610) is unlocked.

13. A microsurgical chair as claimed in any one of claims 1 to 3 wherein: the backrest self-adaptive elastic component (1100) is positioned between the backrest (500) and the sliding seat (710), one end face of the sliding seat (710) close to the backrest self-adaptive elastic component (1100) is opened and is provided with an accommodating cavity for placing the backrest self-adaptive elastic component (1100), the backrest self-adaptive elastic component (1100) comprises,

a connecting plate (1110) having one end fixed to the back surface of the backrest (500);

an adjustment plate (1120) secured within the receiving cavity of the slide block (710);

the pin shaft (1130) is transversely positioned between the connecting plate (1110) and the adjusting plate (1120), one end, close to the connecting plate (1110), of the adjusting plate (1120) is provided with an adjusting hole (1120-1) through which one end of the pin shaft (1130) penetrates, one end of the pin shaft (1130) is positioned in the adjusting hole (1120-1), and the other end of the pin shaft (1130) is connected with the connecting plate (1110);

the second spring (1140) is positioned between the connecting plate (1110) and the adjusting plate (1120) and sleeved on the pin shaft (1130);

a hinge (1150) between the connecting plate (1110) and the adjusting plate (1120), one end of which is connected with the connecting plate (1110) and the other end of which is connected with the adjusting plate (1120);

when the connecting plate (1110) moves towards the direction leaning against the adjusting plate (1120), one end of the pin shaft (1130) in the adjusting hole (1120-1) moves towards the direction far away from the connecting plate (1110), and the second spring (1140) is pressed.

Images