CN114176974A

CN114176974A - Bed body supporting structure of ophthalmic operating bed

Info

Publication number: CN114176974A
Application number: CN202111642392.8A
Authority: CN
Inventors: 陈宇豪; 杨楚
Original assignee: Kanghui Medical Technology Suzhou Co ltd
Current assignee: Kanghui Medical Technology Suzhou Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-03-15
Anticipated expiration: 2041-12-29
Also published as: CN114176974B

Abstract

The invention relates to a bed body supporting structure of an ophthalmologic operating bed, which comprises a head supporting unit, a back supporting unit and a leg supporting unit, wherein the head supporting unit, the back supporting unit and the leg supporting unit are rotatably connected from the front end to the rear end, the head supporting unit comprises a head bracket and a driving piece, the back supporting unit comprises a back bracket and a driver, the leg supporting unit comprises a thigh bracket and a shank bracket which are rotatably connected, a driving part for driving the shank bracket to overturn and push handles arranged on two sides of the shank bracket. When the back or leg is turned, the frame plate and the support frame can be driven to slide relatively and be locked at any position, so that the optimal effective support for the head, the back and the leg is formed, meanwhile, the push handle can be synchronously turned, folded or unfolded, the angle adjustment and locking of the required position of the bed body can be completed without body displacement, and the success rate of the operation is improved.

Description

Bed body supporting structure of ophthalmic operating bed

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a bed body supporting structure of an ophthalmologic operation bed.

Background

It is well known that ophthalmology is the subject of study of diseases related to the visual system, including the eyeball and its associated tissues, and that many ophthalmic diseases such as vitreous body, retinal diseases, ocular optics, glaucoma and optic neuropathy, cataract, etc. are studied.

However, patients who are operated in ophthalmology generally suffer from serious diseases which can affect the vision of eyes, and in order to ensure the smooth progress and success rate of the operation, the patients need to make a proper posture aiming at the operation mode during the eye operation, so that doctors can conveniently check and operate the patients.

At present, a bed body supporting structure comprises a head supporting unit, a back supporting unit and a leg supporting unit, wherein the head supporting unit, the back supporting unit and the leg supporting unit are adjusted in a relative rotation mode.

However, the following drawbacks exist for the existing adjustment methods:

1) the patient needs to continuously shift to possibly reach the required operation angle, so that the operation of the operation is not facilitated, and the error probability is high, thereby influencing the success rate of the operation.

2) When the patient is turned over, the formed supporting position can move along with the change of the turning angle, so that after the patient is turned over, a good supporting effect cannot be formed, and the patient body needs to be effectively moved to enable the legs to be comfortably positioned at the angle which meets the operation, so that the operation is inconvenient, and once the position is inaccurate or the comfort of the patient is insufficient, the positions of the bed and the body can be deviated, and the accuracy of the operation is further influenced;

3) after the operation is turned over, if the pushing handle is not folded independently, an obstacle can be formed, and the accurate operation of the operation of a doctor is influenced.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide an improved leg support unit of an ophthalmic operating table.

In order to solve the technical problems, the invention adopts the following technical scheme: a bed body supporting structure of an ophthalmologic operation bed comprises a head supporting unit, a back supporting unit and a leg supporting unit which are connected in a rotating mode from the front end portion and the rear end portion, wherein the head supporting unit comprises a head bracket and a driving piece for driving the head bracket to rotate, the back supporting unit comprises a back bracket and a driving piece for driving the back bracket to rotate, the leg supporting unit comprises a thigh bracket and a shank bracket which are connected in a rotating mode, a driving portion for driving the shank bracket to turn over and push handles arranged on two sides of the shank bracket, particularly, the back bracket comprises a back frame body and a back frame plate, the rear end portion of the back frame body is connected with the thigh bracket in a rotating mode through a pivot, the back frame plate is arranged on the back frame body in a linear sliding mode along the front-back direction of the back frame body, the back bracket is connected with the front end portion of the back frame plate, the back support unit further comprises an interlocking part connected between the thigh bracket and the back frame plate, wherein the interlocking part can synchronously pull the back frame plate and the head bracket to linearly move relative to the back frame body along with the overturning of the back frame body and can also form self-locking when the back frame body stops moving; the shank support unit comprises a shank support frame, a shank support plate, a first transmission piece and a second transmission piece, wherein the shank support frame is rotatably connected with the rear end of the thigh support frame from the front end, the shank support plate is relatively slidably connected with the shank support frame in the front-back direction, the first transmission piece is arranged between the thigh support frame and the shank support frame, the second transmission piece is arranged on the corresponding side of the shank support frame and is in transmission connection with the corresponding push handle, and the first transmission piece synchronously pushes the shank support plate to move back and forth relative to the shank support frame and relatively locks the moved shank support plate and the shank support frame when the thigh support frame and the shank support frame rotate relatively; the second transmission part drives the push handle to synchronously rotate inwards or outwards to fold or unfold in the fore-and-aft movement of the crus shelf board relative to the crus support frame.

Preferably, the head bracket comprises a bracket body, a connecting member sliding along the length direction of the bracket body and locked with the bracket body, and a connecting arm, wherein one connecting end of the connecting arm is pivotally connected to the back bracket, and the other connecting end of the connecting arm is pivotally mounted on the connecting member for up-and-down rotation in a direction parallel to the pivot or/and left-and-right rotation in a direction perpendicular to the pivot.

Furthermore, the connecting piece includes a slide rail extending along the length direction of the rack body, a slide block slidably disposed on the slide rail, a connecting rod fixed on the slide block and located outside the slide rail, and a locking portion movably disposed on the connecting rod and capable of locking the connecting rod and the slide rail relatively. Therefore, the adjustment in the length direction of the rack body is satisfied.

Furthermore, the slide rail includes two parallel spaced tracks, wherein the relative inboard of two tracks is formed with inside sunken spout, and the slider sets up in the spout from both sides slip.

According to a specific implementation and preferable aspect of the invention, the connecting rod is a screw rod and is arranged perpendicular to the sliding block, the locking part is a locking nut which can be locked and abutted on the sliding rail, and the periphery of the locking nut is provided with anti-skid threads. Thus, the locking and unlocking operations are facilitated.

Preferably, the connecting rod is formed with the mounting groove that extends along connecting rod length direction with the link of slider, and the connecting piece is still including setting up elastic component in the mounting groove and conflict the slip ball between elastic component and frame body. Through the setting of the slip ball of elastic conflict, form restriction effort, avoid in case the unblock back, appear sliding by a wide margin, that is to say, after the unblock, must exert external force and just can implement sliding adjustment.

According to a further embodiment and preferred aspect of the invention, the connecting rod is detachably connected to a pivot joint remote from a connecting end of the slider, the pivot joint being pivotally adjustable relative to the connecting arm about a direction parallel to the pivot axis. In this way, after the connecting arm is positioned, fine rotation adjustment can be carried out through the rotating joint.

Preferably, the rotary joint comprises an outer sleeve, an inner core and a locking piece for locking the inner core and the outer sleeve relatively, wherein the outer sleeve is provided with arc-shaped grooves distributed radially around the outer sleeve, the connecting arm is fixedly connected with the outer sleeve from a connecting end, and the end of the connecting rod extends into the arc-shaped grooves to be in threaded connection with the inner core.

Specifically, the locking piece comprises a plug head detachably connected to the end of the outer sleeve, a locking bolt screwed in the plug head and capable of interference locking the inner core, and a handle fixed to the outer end of the locking bolt. The handle is mainly convenient to operate.

In addition, the connecting arm has a first connecting end, a second connecting end and a third connecting end, wherein the first connecting end is connected to the pivot, the second connecting end is connected to the driving element, and the third connecting end is connected to the connecting element. Thus, the triangular support provides increased stability once the drive member stops moving.

Specifically, when the head bracket and the back bracket are level, the first connecting end, the second connecting end and the third connecting end are arranged from top to bottom, the second connecting end is located on the right side of the first connecting end, the third connecting end is located on the left side of the first connecting end and located below the head bracket, the driving piece is a telescopic rod installed on the back bracket, and the telescopic end is rotatably connected with the second connecting end.

Preferably, when the back frame body is turned upwards around the rear end part, the linkage part drives the back frame plate and the head bracket to move towards the rear end part; when the back frame body is turned downwards around the rear end part, the linkage part drives the back frame plate and the head bracket to move towards the front end part. Thus, when the user lies in a half-lying state, the downward movement can be most attached to the back and the head for effective support; when lying down, not only can extend the length of the bed body, but also form better supporting effect.

According to a specific implementation and preferred aspect of the invention, the linking component comprises a first fixing seat and a second fixing seat respectively fixed on the back frame body and the thigh bracket, a linking seat fixed on the back frame plate and linked with the head bracket, a first connecting rod rotatably arranged on the first fixing seat and formed with a first connecting end and a second connecting end, a second connecting rod connecting the first connecting end with the linking seat, and a third connecting rod connecting the second connecting end with the second fixing seat, wherein when the back frame body is turned over, the third connecting rod drives the first connecting rod to rotate so as to drive the second connecting rod to drive the linking seat to slide linearly, and when the back frame body stops turning over, the first connecting rod, the second connecting rod and the third connecting rod are mutually limited to form self-locking. The adopted components are simple and are convenient to implement.

Preferably, the first fixing seat comprises seat plates which are positioned on two sides and fixed on the back frame body, the first connecting rod is rotatably connected between the two seat plates, and the second connecting rod and the third connecting rod are respectively formed on two opposite sides of the first connecting rod and are rotatably connected with the connecting seat and the second fixing seat through rotating shafts.

Specifically, when the back bracket and the thigh bracket are flush, the second connecting end of the first connecting rod is positioned right below the rotating point where the first connecting rod and the first fixing seat are connected, and the first connecting end is positioned behind the rotating point. Thus, after lying down, the movement between the links can be limited, an optimum locking state can be presented, and a stable support can be formed.

According to a further embodiment and preferred aspect of the present invention, the back frame body is provided with a linear guide rail extending in a front-rear direction, and the back frame plate slides on the linear guide rail from the bottom carriage.

Preferably, the back frame body comprises a plurality of first frame bars extending along the front-rear direction, a second frame bar crossing the plurality of first frame bars, wherein the linear slide rail is disposed on the first frame bar.

Furthermore, the linear slide rail has two, and sets up about the middle part symmetry of back frame body. This makes the linear motion more smooth.

Meanwhile, the anti-dropping type is selected in a matching mode of the sliding seat and the sliding rail, so that the linear guide motion can be implemented more stably.

In addition, the driver comprises a transmission arm rod and a telescopic cylinder, wherein the transmission arm rod is fixed on the back frame body and extends towards the bottom of the thigh bracket, and two end parts of the telescopic cylinder are respectively connected with the rear end part of the transmission arm rod and the rear end part of the thigh bracket. The layout not only reasonably utilizes space, but also can implement overturning operation more labor-saving.

Further, the driving arm pole includes that the upper end is fixed oblique branch on the back frame body, from the extension rod of the lower tip ranging back of oblique branch, wherein back bracket with thigh bracket at level, the extension rod perk that makes progress, the telescoping cylinder with the coupling end portion of extension rod is located the telescoping cylinder with the coupling end portion of back frame body. So, not only the structure that forms is more stable, as long as telescopic cylinder relative motion back moreover, formed driving force direction and back frame body direction of motion are very close to, more are favorable to the effective support after upset motion and the motion.

Preferably, when the shank support frame turns downwards around the front end part, the first transmission piece drives the shank support plate to slide forwards relative to the shank support frame, and the second transmission piece synchronously drives the push handle to fold inwards; when the shank support frame turns upwards around the front end part, the first transmission piece drives the shank support plate to slide forwards relative to the shank support frame, and the second transmission piece synchronously drives the push handle to expand outwards.

According to a specific implementation and preferred aspect of the invention, the first transmission piece comprises a first positioning seat, a second positioning seat and a third positioning seat which are respectively fixed on the thigh support, the calf support and the calf shelf plate; the first transmission rod is rotatably arranged on the second positioning seat and is provided with a first connecting part and a second connecting part; the second transmission rod is used for connecting the first connecting part with the first positioning seat in a transmission manner; and the third transmission rod is used for driving and connecting the second connecting part and the third positioning seat, wherein when the shank support frame and the thigh support frame are relatively positioned, the first transmission rod, the second transmission rod and the third transmission rod are relatively locked, and the shank support frame plate and the shank support frame are relatively fixed. Therefore, not only can effective support be provided, but also the lower leg support can be positioned at the adjusting position by matching with the driving piece so as to meet the operation requirement.

Preferably, a sliding rail extending along the front-back direction is formed on the calf support, and a sliding module matched with the sliding rail is formed on the calf support plate, wherein the sliding module slides on the sliding rail in a falling-proof manner.

According to a further embodiment and preferred aspect of the invention, the push handle comprises a handle seat fixed to the calf plate, a handle core arranged to rotate in the handle seat about a horizontal direction, a handle bar fixed to the handle core, and a locking member for locking the handle core relative to the handle seat, the second transmission member drivingly connects the core to the calf support and the locking member automatically locks the core and the handle seat when rotated to the extreme position. Under the synchronous motion of the second transmission piece, the synchronous motion of the push handles at two sides can be implemented.

Preferably, the core comprises a core rod and a core cap, wherein the core rod is rotatably arranged in the core seat around the axis direction of the core rod, the core rod is arranged on the core cap, and the locking piece locks the core seat and the core cap relatively.

According to a further embodiment and preferred aspect of the present invention, the handle seat is provided with an inner tube sleeve, the core bar is rotatably disposed in the inner tube sleeve, the second transmission member comprises a transmission sleeve which is coaxial with the inner tube sleeve and is rotatably disposed on the inner tube sleeve, and a transmission link rod which is rotatably connected to the transmission sleeve and the shank strut at two ends thereof, respectively, wherein the transmission sleeve is engaged with the end of the core bar, and the transmission sleeve and the core bar are driven by the transmission link rod to rotate synchronously. Thus, the driving connecting rod drives the implementation handle bar to move inwards or outwards under the linkage of the driving connecting rod.

Preferably, the core rod is in a hollow tubular shape, an arc-shaped groove is formed in the end portion of the core rod along the circumferential direction, the transmission sleeve comprises a sleeve body rotatably arranged at the end portion of the inner pipe sleeve, a poking block extending into the arc-shaped groove from the interior of the sleeve body, and a connecting lug arranged outside the sleeve body, one end portion of the transmission connecting rod is rotatably connected with the connecting lug, and the other end portion of the transmission connecting rod is connected with the corresponding side shank support frame. Therefore, the position of the transmission connecting rod is convenient to adjust along with the relative motion of the calf support frame and the calf shelf plate under the idle running of the sleeve body, and when the sleeve body is close to the limit position, the shifting block is matched with the end part of the arc-shaped groove to drive the core cap to rotate.

In addition, the handle seat is provided with a sliding groove and a mounting hole which horizontally extend along the left-right direction, the core cap is correspondingly provided with a lock hole, the locking piece comprises an elastic piece and a lock pin which are arranged in the mounting hole, and a poke rod which is fixed on the lock pin and transversely moves in the sliding groove, wherein when the locking piece is locked, the lock pin is inserted into the lock hole under the elastic force of the elastic piece to relatively lock the handle seat and the core cap. As for the unblock, it is simpler, directly dial the poker rod along the sliding tray motion compression elastic component, until the lockpin is deviate from in the lockhole, can implement the upset operation this moment.

Preferably, a guide post and an arc-shaped guide groove which is formed on the other and takes the core rod as a circle center are formed on one of the handle seat and the core cap, wherein when the core rod rotates relative to the handle seat, the guide post and the arc-shaped guide groove move relatively.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

when the back or leg is turned, the frame plate and the support frame can be driven to slide relatively and be locked at any position, so that the optimal effective support for the head, the back and the leg is formed, meanwhile, the push handle can be synchronously turned, folded or unfolded, the angle adjustment and locking of the required position of the bed body can be completed without body displacement, and the success rate of the operation is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of a bed support structure of an ophthalmic surgical bed according to the present invention;

FIG. 2 is a schematic front view of the head support unit of FIG. 1;

FIG. 3 is a schematic structural view of the head support unit of FIG. 1;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic sectional view taken along line A-A in FIG. 4;

FIG. 6 is a schematic structural view of the back support unit of FIG. 1;

FIG. 7 is a schematic structural view (another perspective) of the back support unit of FIG. 1;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a schematic sectional view taken along line C-C in FIG. 8;

FIG. 10 is a schematic view of the leg support unit of FIG. 1;

FIG. 11 is a schematic view (from another perspective) of the leg support unit of FIG. 1;

FIG. 12 is a top view of FIG. 10;

FIG. 13 is a schematic partial cross-sectional view of FIG. 12;

FIG. 14 is a schematic view of a portion of the push handle of FIG. 10;

FIG. 15 is a schematic view of a portion of the structure of FIG. 14;

FIG. 16 is an exploded view of the structure of FIG. 15;

wherein: firstly, a head supporting unit; 1. a connecting arm; 1a, a first connecting end; 1b, a second connection; 1c, a third connecting end; 2. a head bracket; 20. a rack body; 21. a connecting member; 210. a slide rail; g. a track; h1, a chute; 211. a slider; 212. a connecting rod; c1, mounting groove; 213. a locking portion; 214. an elastic member; 215. a sliding ball; 2. a rotating joint; 220. an outer sleeve; 221. an inner core; 222. a locking member; s1, plug; s2, locking bolt; s3, handle; 3. a head pad; 4. a drive member; s, a pivot;

secondly, a back supporting unit; b1, a back bracket; b10, a back frame body; 101. a first frame bar; g1, linear slide rail; 102. a second frame bar; b11, a back frame plate; g2, a slide; b2, driver; b20, a transmission arm lever; 200. a diagonal strut; 201. an extension rod; b21, a telescopic cylinder; b3, a linking member; b31, a first fixed seat; 310. a seat plate; b32, a second fixed seat; b33, a connecting seat; b34, a first connecting rod; a1, a first connecting end; a2, a second connecting end; b35, a second connecting rod; b36, a third connecting rod;

thirdly, a leg supporting unit; t1, thigh bracket; t2, calf support; t20, calf support; t200, a sliding track; t21, shank shelf board; t210, a sliding module; t3, a drive section; t31, a first seat body; t32, a second seat body; t33, a telescopic rod; t4, push handle; 40. a handle seat; 400. an inner pipe sleeve; f. a sliding groove; k. mounting holes; g. an arc-shaped guide groove; 41. a handle core; 410. a core bar; e. an arc-shaped slot; 411. a core cap; q, a lock hole; z, a guide post; 42. a handle bar; 43. a locking member; 430. an elastic member; 431. a lock pin; 432. a poke rod; t5, a first transmission member; 51. a first positioning seat; 52. a second positioning seat; 53. a third positioning seat; 54. a first drive lever; 541. a first connection portion; 52. a second connecting portion; 55. a second transmission rod; 56. a third transmission rod; t6, a second transmission member; 60. a transmission sleeve; 600. a sleeve body; 601. a shifting block; 602. connecting lugs; 61. a drive link.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

As shown in fig. 1, the bed body supporting unit of the ophthalmic operating bed of the present embodiment includes a head supporting unit (i), a back supporting unit (ii), and a leg supporting unit (iii) rotatably connected from front and rear end portions.

Specifically, the head support unit comprises a head bracket 2 and a driving piece 4 for driving the head bracket 2 to rotate; the back support unit comprises a back bracket B1 and a driver B2 for driving the back bracket B1 to rotate; the leg support unit (c) comprises a thigh bracket T1 and a shank bracket T2 which are rotatably connected, a driving part T3 for driving the shank bracket T2 to overturn, and push handles T4 arranged at two sides of the shank bracket T2.

As shown in fig. 2, the head support unit (r) includes a head rest (2) rotatably connected to the backrest of the ophthalmic operating table through a connecting arm (1), a head rest (3), and a driving member (4) for driving the head rest (2) to rotate.

As shown in fig. 3, the head carriage 2 includes a carriage body 20, a coupling member 21 that slides along the longitudinal direction of the carriage body 20 and is locked to the carriage body 20, and a rotary joint 22.

As shown in fig. 4 and 5, the connecting member 21 includes a slide rail 210 extending along the longitudinal direction of the rack body 20, a slider 211 slidably disposed on the slide rail 210, a connecting rod 212 fixed to the slider 211 and located outside the slide rail 210, and a locking portion 213 movably disposed on the connecting rod 212 and capable of locking the connecting rod 212 and the slide rail 210 with respect to each other. Therefore, the adjustment in the length direction of the rack body is satisfied.

The slide rail 210 includes two parallel spaced rails g, wherein an inward recessed slide groove h1 is formed on the opposite inner sides of the two rails g, and the slide block 211 is slidably disposed in the slide groove h1 from both sides.

The connecting rod 212 is a screw rod and is perpendicular to the sliding block 211, and the locking part 213 is a locking nut capable of locking and abutting against the sliding rail 210, wherein the locking nut is formed with anti-slip threads on the outer periphery. Thus, the locking and unlocking operations are facilitated.

In this example, the connection end of the connection rod 212 and the slider 211 is formed with a mounting groove c1 extending along the length direction of the connection rod 212, and the connection member 20 further includes an elastic member 214 disposed in the mounting groove c1, and a sliding ball 215 abutting between the elastic member 214 and the holder body 20. Through the setting of the slip ball of elastic conflict, form restriction effort, avoid in case the unblock back, appear sliding by a wide margin, that is to say, after the unblock, must exert external force and just can implement sliding adjustment.

The rotary joint 22 is detachably arranged at a connecting end of the connecting rod 212 far away from the sliding block 211, and the connecting end of the connecting arm 1 is rotatably connected to the backrest frame through a pivot S, and the other connecting end is installed on the rotary joint 22 to rotate up and down around the direction parallel to the pivot S and be locked. In this way, after the connecting arm is positioned, fine rotation adjustment can be carried out through the rotating joint.

In this embodiment, the rotating joint 22 includes an outer sleeve 220, an inner core 221, and a locking piece 222 for locking the inner core 221 and the outer sleeve 220 relatively, wherein the outer sleeve 220 is formed with arc-shaped grooves h radially distributed around itself, the connecting arm 1 is fixedly connected to the outer sleeve 220 from a connecting end, and the end of the connecting rod 212 extends into the arc-shaped groove h to be in threaded connection with the inner core 221.

Specifically, the locking piece 222 includes a plug s1 detachably attached to the end of the outer sleeve 220, a locking bolt s2 screwed into the plug s1 and capable of interfering with the locking core 221, and a handle s3 fixed to the outer end of the locking bolt s 2. In this example, the handle is provided mainly for easy operation.

The connecting arm 1 has a first connecting end 1a, a second connecting end 1b and a third connecting end 1c forming three vertices of a triangle, wherein the first connecting end 1a is connected to the pivot S, the second connecting end 1b is connected to the driving member 4, and the third connecting end 1c is connected to the outer sleeve 220. In this way, the structure of the triangle is changed by the position change of the second connecting end 1b, and once the driving element 4 stops moving, the triangle is relatively positioned to form stable support.

Specifically, when the frame body 20 and the backrest frame of the backrest are flush, the first connecting end 1a, the second connecting end 1b and the third connecting end 1c are arranged from top to bottom, the second connecting end 1b is located on the right side of the first connecting end 1a, the third connecting end 1c is located on the left side of the first connecting end 1a and is located below the frame body 20, the driving piece 4 is a telescopic rod installed on the backrest frame, and the telescopic end is rotatably connected with the second connecting end 1 b.

Therefore, the head support unit of the present embodiment has the following advantages:

1. the rotation adjustment of the head rest is formed under the rotation support of the connecting arm, and meanwhile, the linear motion and the swing (left and right or up and down) of the head rest are combined to meet the operation requirement of adjusting different positions of the head rest up, down, left, right, front and back, and in addition, the position can be locked after the adjustment, so that the success rate of the operation is improved;

2. the connecting arm forming the main support has higher stability under the effective support of a triangle;

3. when the linear sliding is implemented, the sliding can be directly carried out after unlocking, and the sliding can be carried out after overcoming resistance so as to avoid adjustment transition.

Referring to fig. 6, the back support unit (B) includes a back bracket (B1), a back pad, and a driver (B2) for driving the back bracket (B1) to rotate around the rear end.

The back bracket B1 comprises a back bracket body B10 and a back frame plate B11, wherein the back end of the back bracket body B10 is rotatably connected with the thigh bracket T1 through a pivot, the back frame plate B11 is linearly arranged on the back bracket body B10 in a sliding manner along the front-back direction of the back bracket body B10, the head bracket 2 is connected with the front end of the back frame plate B11, and the back cushion is detachably arranged on the back frame plate B11.

As shown in fig. 7, the back frame body B10 includes two first frame bars 101 extending in the front-rear direction and a second frame bar 102 crossing the two first frame bars 101.

In this example, the first frame bar 101 and the second frame bar 102 are distributed in a grid shape.

Meanwhile, a linear slide rail g1 is correspondingly formed on each first rack bar 101, and the back rack plate B11 is slidably arranged on the linear slide rail g1 from the slide g2 at the bottom.

In this example, each linear slide g1 has two single rails, and the slide g2 has a plurality of single rails and is uniformly spaced along the length of the single rails.

Furthermore, a falling-off prevention design is formed between the track single body and the sliding seat g 2.

In this example, the back support unit further includes an interlocking member B3 connected between the thigh bracket T1 and the back frame plate B11, wherein the interlocking member B3 can pull the back frame plate B11 and the head bracket 2 to move linearly with respect to the back frame body B10 in synchronization with the inversion of the back frame body B10 and can also form self-locking when the back frame body B10 stops moving.

In this example, when the back frame body B10 turns upward around the rear end, the interlocking member B3 drives the back frame plate B11 and the head bracket 2 to move toward the rear end; when the back frame body B10 is turned down around the rear end, the interlocking member B3 brings the back frame plate B11 and the head bracket 2 to move toward the front end. Thus, when the user lies in a half-lying state, the downward movement can be most attached to the back and the head for effective support; when lying down, not only can extend the length of the bed body, but also form better supporting effect.

Referring to fig. 8 and 9, the linking member B3 includes a first fixing base B31 and a second fixing base B32 respectively fixed on the back frame body B10 and the thigh bracket T1, a linking base B33 fixed on the back frame plate B11 and linked with the head bracket 2, a first connecting rod B34 rotatably disposed on the first fixing base B31 and formed with a first connecting end a1 and a second connecting end a2, a second connecting rod B35 connecting the first connecting end a1 with the linking base B33, and a third connecting rod B36 connecting the second connecting end a2 with the second fixing base B32, wherein when the back frame body B10 is turned over, the third connecting rod B36 drives the first connecting rod B34 to drive the second connecting rod B35 to drive the linking base B33 to slide linearly, and when the back frame body B33 is turned over, the first connecting rod B33, the second connecting rod B33, and the third connecting rod B33 are self-locked. The adopted components are simple and are convenient to implement.

The first fixing seat B31 includes seat plates 310 located at both sides and fixed in the middle of the second frame bar 102, the first link B34 is rotatably connected between the two seat plates 310, the second link B35 and the third link B36 are respectively formed at opposite sides of the first link B34 and rotatably connected with the engaging seat B33 and the second fixing seat B32 through rotating shafts.

When the back bracket B1 and the thigh bracket T1 are flush, the second connection end a2 of the first link B34 is located right below the rotation point where the first link B34 and the first fixing seat B31 are connected, and the first connection end a1 is located behind the rotation point. Thus, after lying down, the movement between the links can be limited, an optimum locking state can be presented, and a stable support can be formed.

In addition, the driver B2 includes a driving arm B20 fixed to the back frame body B10 and extending toward the bottom of the thigh bracket T1, and a telescopic cylinder B21, wherein both ends of the telescopic cylinder B21 are connected to the rear end of the driving arm B20 and the rear end of the thigh bracket T1, respectively. The layout not only reasonably utilizes space, but also can implement overturning operation more labor-saving.

The driving arm lever B20 comprises a diagonal support rod 200 with the upper end fixed on the back frame body B10, and an extension rod 201 extending backwards from the lower end of the diagonal support rod 200, wherein when the back bracket B1 and the thigh bracket T1 are flush, the extension rod 201 tilts upwards, and the connecting end of the telescopic cylinder B21 and the extension rod 201 is located at the connecting end of the telescopic cylinder B21 and the back frame body B10. So, not only the structure that forms is more stable, as long as telescopic cylinder relative motion back moreover, formed driving force direction and back frame body direction of motion are very close to, more are favorable to the effective support after upset motion and the motion.

In summary, the back support unit of the present embodiment has the following advantages:

1. the backrest overturning adjusting device can be relatively closed or unfolded on the premise of keeping the positions of the backrest support and the head support unchanged while meeting the requirement of backrest overturning adjustment so as to form the optimal support effect, and can be self-locked in any motion state so as to facilitate the adjustment and locking of the operation position and improve the success rate of the operation;

2. the simple multi-connecting-rod structure is adopted, and the relative positions of the transmission arm rod and the telescopic cylinder are matched, so that self-locking can be simply and conveniently implemented, effective support is formed, and the stability after adjustment is further improved.

Referring to fig. 10 and 11, the leg support unit (c) includes a thigh support T1 and a shank support T2 which are rotatably connected, a driving unit T3 for driving the shank support T2 to turn, push handles T4 disposed at both sides of the shank support T2, a first transmission member T5 disposed between the thigh support T1 and the shank support T2, and a second transmission member T6 disposed at a corresponding side of the shank support T2 and in transmission connection with the corresponding push handle.

Specifically, the thigh bracket T1 is pivotally connected from the rear end to the front end of the shank bracket T2.

The calf bracket T2 comprises a calf bracket T20 and a calf shelf T21, wherein the calf bracket T20 is rotatably connected with the rear end of the thigh bracket T1 from the front end, and the calf shelf T21 is relatively connected with the calf bracket T20 in a sliding way in the front-rear direction.

The first transmission piece T5 synchronously pushes the calf shelf T21 to move back and forth relative to the calf support T20 and locks the moved calf shelf T21 and the calf support T20 relatively when the thigh bracket T1 and the calf bracket T2 rotate relatively; the second transmission member T6 drives the push handle T4 to simultaneously rotate inwardly or outwardly to fold or unfold in a fore-and-aft motion of the calf shelf plate T21 relative to the calf shelf T20.

In this example, when the calf support frame T20 turns downwards around the front end, the first transmission member T5 drives the calf support plate T21 to slide forwards relative to the calf support frame T20, and the second transmission member T6 synchronously drives the push handle T4 to fold inwards; when the calf support T20 turns upward around the front end, the first transmission piece T5 drives the calf support plate T21 to slide forward relative to the calf support T20, and the second transmission piece T6 synchronously drives the push handle T4 to expand outward.

As shown in fig. 12 and 13, the first transmission member T5 includes a first positioning seat 51, a second positioning seat 52 and a third positioning seat 53 fixed to the thigh bracket T1, the calf support frame T20 and the calf support plate T21, respectively; a first transmission rod 54 rotatably disposed on the second positioning seat 52 and having a first connection portion 541 and a second connection portion 542; a second transmission rod 55 for driving and connecting the first connection portion 541 and the first positioning seat 51; and the third transmission rod 56 is used for driving and connecting the second connecting part 542 and the third positioning seat 53, wherein when the calf support T20 and the thigh bracket T1 are oppositely positioned, the first transmission rod 54, the second transmission rod 55 and the third transmission rod 56 are oppositely locked, and the calf plate T21 and the calf support T20 are relatively fixed. Therefore, not only can effective support be provided, but also the lower leg bracket can be positioned at the adjusting position by matching with the driving piece so as to meet the operation requirement.

The calf support T20 is formed with a slide rail T200 extending in the fore-and-aft direction, the calf support plate T21 is formed with a slide module T210 matching with the slide rail T200, wherein the slide module T210 slides on the slide rail T200 in a drop-proof manner.

Referring to fig. 14 to 16, the push handle T4 includes a handle seat 40 fixed on the calf shelf plate T21, a handle core 41 rotatably disposed in the handle seat 40 about a horizontal direction, a handle bar 42 fixed on the handle core 41, and a locking member 43 for locking the handle core 41 and the handle seat 40 with respect to each other, the second transmission member T6 drivingly connects the core 41 and the calf bracket T21, and when rotated to an extreme position, the locking member 43 automatically locks the core 41 and the handle seat 40. Under the synchronous motion of the second transmission piece, the synchronous motion of the push handles at two sides can be implemented.

The handle core 41 comprises a core rod 410 and a core cap 411, wherein the core rod 410 is rotatably arranged in the handle seat 40 around the axis direction thereof, the handle rod 42 is arranged on the core cap 411, and the locking piece 43 locks the seat 40 and the core cap 411 relatively.

The inner pipe sleeve 400 is arranged in the handle seat 40, the core bar 410 is rotatably arranged in the inner pipe sleeve 400, the second transmission piece T6 comprises a transmission sleeve 60 which is coaxial with the inner pipe sleeve 400 and is rotatably arranged on the inner pipe sleeve 400, and a transmission connecting rod 61 of which two ends are respectively rotatably connected with the transmission sleeve 60 and the shank bracket T21, wherein the transmission sleeve 60 is connected with the end part of the core bar 410, and the transmission sleeve 60 and the core bar 410 are driven by the transmission connecting rod 61 to synchronously rotate. Thus, the driving link 61 is linked to move the implement lever 42 inward or outward.

The core rod 410 is hollow and tubular, and the end portion is provided with an arc-shaped groove e along the circumferential direction, the transmission sleeve 60 comprises a sleeve body 600 rotatably arranged at the end portion of the inner tube sleeve 400, a toggle block 601 extending into the arc-shaped groove e from the inside of the sleeve body 600, and a connecting lug 602 arranged outside the sleeve body 600, wherein one end portion of the transmission connecting rod 61 is rotatably connected with the connecting lug 602, and the other end portion is connected with a corresponding side shank bracket T21. Therefore, the position of the transmission connecting rod is convenient to adjust along with the relative motion of the calf bracket and the calf frame plate under the idle running of the sleeve body, and when the sleeve body is close to the limit position, the shifting block is matched with the end part of the arc-shaped groove to drive the core cap to rotate.

In addition, the holder 40 is provided with a sliding groove f and a mounting hole k which horizontally extend along the left-right direction, the core cap 411 is correspondingly provided with a locking hole q, the locking member 43 comprises an elastic member 430 and a locking pin 431 which are mounted in the mounting hole k, and a poke rod 432 which is fixed on the locking pin 431 and transversely moves in the sliding groove f, wherein when the locking is carried out, the locking pin 431 is inserted into the locking hole q under the elastic force of the elastic member 430 to relatively lock the holder 40 and the core cap 411. As for the unblock, it is simpler, directly dial the poker rod along the sliding tray motion compression elastic component, until the lockpin is deviate from in the lockhole, can implement the upset operation this moment.

Meanwhile, a guide post z is formed on the core cap 411, and an arc-shaped guide groove g centering on the core rod 410 is formed on the handle holder 40, wherein the guide post z and the arc-shaped guide groove g move relatively when the core rod 410 rotates relatively to the handle holder 40. In this way, the relative movement of the holder 40 and the core cap 411 is made more stable.

In this example, the driving part T3 comprises a first seat T31 and a second seat T32 fixed to the calf support frame T20 and the thigh bracket T1, respectively, and a telescopic rod T33 with two ends rotatably connected to the first seat T31 and the second seat T32, wherein the telescopic rod T33 is located at one side and the telescopic cylinder B21 is located at the opposite side, so as to reasonably utilize the space.

In summary, the leg support unit of the present embodiment has the following advantages:

1. when the legs are turned over, the frame plate and the support frame can be synchronously driven to relatively slide and lock any sliding position, so that the effective support position can be adjusted in a follow-up manner, body displacement is not required, and the success rate of the operation is improved;

2. during the relative movement of the frame plate and the support frame, the pushing handle can be synchronously turned, folded or unfolded, thereby being convenient for the requirement of the operation;

3. under the idle running of the sleeve body, the position of the transmission connecting rod is convenient to adjust along with the relative motion of the shank bracket and the shank bracket plate, and when the sleeve body is close to the extreme position, the poking block is matched with the end part of the arc-shaped groove to drive the core cap to rotate, and the lock pin automatically pops into the lock hole to limit the push handle and the shank bracket relatively.

The present invention has been described in detail above, but the present invention is not limited to the above-described embodiments. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an ophthalmic surgery bed's bed body bearing structure, its includes from front and back tip looks rotation head support unit, back support unit, the shank support unit who connects, wherein head support unit includes head bracket, drive head bracket pivoted driving piece, back support unit includes back bracket, drive back bracket pivoted driver, shank support unit is including rotating thigh bracket and shank bracket, the drive of connecting mutually the drive division and the setting of shank bracket upset are in the pushing away of shank bracket both sides, its characterized in that: the back support comprises a back support body and a back frame plate, wherein the rear end part of the back support body is rotatably connected with a thigh bracket through a pivot, the back frame plate is linearly arranged on the back support body in a sliding manner along the front-back direction of the back support body, the head bracket is connected with the front end part of the back frame plate, the back support unit further comprises a linkage part connected between the thigh bracket and the back frame plate, the linkage part can synchronously pull the back frame plate and the head bracket to linearly move relative to the back support body along with the overturning of the back support body and can also form self-locking when the back support body stops moving; the shank support unit comprises a shank support frame, a shank support plate, a first transmission piece and a second transmission piece, wherein the shank support frame is rotatably connected with the rear end of the thigh support frame from the front end, the shank support plate is relatively slidably connected with the shank support frame in the front-back direction, the first transmission piece is arranged between the thigh support frame and the shank support frame, the second transmission piece is arranged on the corresponding side of the shank support frame and is in transmission connection with the corresponding push handle, and the first transmission piece synchronously pushes the shank support plate to move back and forth relative to the shank support frame and relatively locks the moved shank support plate and the shank support frame when the thigh support frame and the shank support frame rotate relatively; the second transmission part drives the push handle to synchronously rotate inwards or outwards to fold or unfold in the fore-and-aft movement of the crus shelf board relative to the crus support frame.

2. The ophthalmic operating table bed support structure according to claim 1, wherein: the head bracket comprises a bracket body, a connecting piece which slides along the length direction of the bracket body and is locked with the bracket body, and a connecting arm, wherein one connecting end of the connecting arm is rotatably connected to the back bracket through a pivot, and the other connecting end of the connecting arm is rotatably adjusted and locked on the connecting piece in a way of rotating up and down around the direction parallel to the pivot or/and rotating left and right around the direction vertical to the pivot.

3. The ophthalmic operating table bed support structure according to claim 2, wherein: the connecting piece comprises a slide rail extending along the length direction of the rack body, a slide block arranged on the slide rail in a sliding manner, a connecting rod fixed on the slide block and positioned outside the slide rail, and a locking part movably arranged on the connecting rod and capable of locking the connecting rod and the slide rail relatively; the sliding rail comprises two parallel spaced rails, wherein inwards-recessed sliding grooves are formed on the opposite inner sides of the two rails, and the sliding blocks are arranged in the sliding grooves in a sliding manner from two sides; the connecting rod is a screw rod and is perpendicular to the sliding block, and the locking part can be a locking nut which can be locked and abutted on the sliding rail.

4. The ophthalmic surgical bed support structure according to claim 3, wherein: the connecting end of the connecting rod and the sliding block is provided with an installation groove extending along the length direction of the connecting rod, and the connecting piece further comprises an elastic piece arranged in the installation groove and a sliding ball abutted between the elastic piece and the frame body; the connecting rod is detachably connected to a rotating joint far away from a connecting end of the sliding block, and the rotating joint and the connecting arm are relatively rotated and adjusted around the direction parallel to the pivot.

5. The ophthalmic surgical bed support structure according to claim 4, wherein: the rotating joint comprises an outer sleeve, an inner core and a locking piece for locking the inner core and the outer sleeve relatively, wherein an arc-shaped groove distributed radially around the outer sleeve is formed in the outer sleeve, the connecting arm is fixedly connected with the outer sleeve from a connecting end, the end of the connecting rod extends into the arc-shaped groove and is in threaded connection with the inner core, and the locking piece comprises a plug head detachably connected to the end of the outer sleeve, a locking bolt in the plug head in a threaded connection mode and capable of being abutted to lock the inner core, and a handle fixed to the outer end of the locking bolt.

6. The ophthalmic operating table bed support structure according to claim 2, wherein: the connecting arm is provided with a first connecting end, a second connecting end and a third connecting end which form three vertexes of a triangle, wherein the first connecting end is connected to the pivot, the second connecting end is connected to the driving piece, the third connecting end is connected to the connecting piece, when the head bracket and the back bracket are flush, the first connecting end, the second connecting end and the third connecting end are arranged from top to bottom, the second connecting end is located on the right side of the first connecting end, the third connecting end is located on the left side of the first connecting end and located below the head bracket, the driving piece is a telescopic rod installed on the back bracket, and the telescopic end is rotatably connected with the second connecting end.

7. The ophthalmic operating table bed support structure according to claim 1, wherein: when the back frame body turns upwards around the rear end part, the linkage part drives the back frame plate and the head bracket to move towards the rear end part; when the back frame body turns downwards around the rear end part, the linkage part drives the back frame plate and the head bracket to move towards the front end part, the linkage part comprises a first fixing seat and a second fixing seat which are respectively fixed on the back frame body and the thigh bracket, a connecting seat which is fixed on the back frame plate and is connected with the head bracket, a first connecting rod which is rotatably arranged on the first fixing seat and is provided with a first connecting end and a second connecting end, a second connecting rod which connects the first connecting end with the connecting seat, and a third connecting rod which connects the second connecting end with the second fixing seat, wherein when the back frame body turns, the third connecting rod drives the first connecting rod to rotate so as to drive the second connecting rod to drive the connecting seat to slide linearly, when the back frame body stops turning, the first connecting rod drives the connecting rod to slide linearly, The second connecting rod and the third connecting rod are mutually limited to form self-locking.

8. The ophthalmic operating table bed support structure according to claim 1, wherein: when the shank support frame turns downwards around the front end part, the first transmission piece drives the shank support plate to slide forwards relative to the shank support frame, and the second transmission piece synchronously drives the push handle to fold inwards; when the shank support frame turns upwards around the front end part, the first transmission piece drives the shank support plate to slide forwards relative to the shank support frame, and the second transmission piece synchronously drives the push handle to expand outwards; the first transmission piece comprises a first positioning seat, a second positioning seat and a third positioning seat which are respectively fixed on the thigh support, the shank support frame and the shank support plate; the first transmission rod is rotatably arranged on the second positioning seat and is provided with a first connecting part and a second connecting part; the second transmission rod is used for connecting the first connecting part with the first positioning seat in a transmission manner; and the third transmission rod is used for driving and connecting the second connecting part and the third positioning seat, when the shank support frame and the thigh support frame are relatively positioned, the first transmission rod, the second transmission rod and the third transmission rod are relatively locked, and the shank support frame plate and the shank support frame are relatively fixed.

9. The ophthalmic operating table bed support structure according to claim 1, wherein: the push handle comprises a handle seat fixed on the shank support plate, a handle core arranged in the handle seat in a rotating mode around the horizontal direction, a handle rod fixed on the handle core and a locking piece for locking the handle core and the handle seat relatively, the handle core and the shank support frame are in transmission connection through the second transmission piece, and when the push handle rotates to the limit position, the locking piece automatically locks the handle core and the handle seat.

10. The ophthalmic surgical bed support structure according to claim 9, characterized in that: the handle core comprises a core rod and a core cap, wherein the core rod is rotatably arranged in the handle seat around the axis direction of the core rod, the handle rod is arranged on the core cap, and the locking piece locks the handle seat and the core cap relatively; an inner pipe sleeve is arranged in the handle seat, the core bar is rotatably arranged in the inner pipe sleeve, the second transmission piece comprises a transmission sleeve which is coaxial with the inner pipe sleeve and is rotatably arranged on the inner pipe sleeve, and a transmission connecting rod of which two end parts are respectively rotatably connected with the transmission sleeve and the shank strut, wherein the transmission sleeve is connected with the end part of the core bar, and the transmission sleeve and the core bar are driven by the transmission connecting rod to synchronously rotate; the core rod is in a hollow tubular shape, an arc-shaped groove is formed in the end part of the core rod along the circumferential direction, the transmission sleeve comprises a sleeve body which is rotatably arranged at the end part of the inner pipe sleeve, a poking block which extends into the arc-shaped groove from the interior of the sleeve body, and a connecting lug which is arranged outside the sleeve body, one end part of the transmission connecting rod is rotatably connected with the connecting lug, and the other end part of the transmission connecting rod is connected with the shank support frame on the corresponding side; the handle seat is provided with a sliding groove and a mounting hole which horizontally extend along the left-right direction, the core cap is correspondingly provided with a lock hole, the locking piece comprises an elastic piece and a lock pin which are arranged in the mounting hole, and a poking rod which is fixed on the lock pin and transversely moves in the sliding groove, wherein when the locking piece is locked, the lock pin is inserted into the mounting hole under the elastic force of the elastic piece to relatively lock the handle seat and the core cap; and a guide post and an arc-shaped guide groove which is formed on the other core rod and takes the core rod as the center of a circle are formed on one of the handle seat and the core cap, wherein when the core rod rotates relative to the handle seat, the guide post and the arc-shaped guide groove move relatively.