CN220025497U - Anti-falling device for operating bed - Google Patents

Abstract

The utility model relates to the field of medical instruments and discloses an anti-falling bed device for an operating table, which comprises two groups of telescopic bed baffles and two groups of connecting components, wherein the two groups of telescopic bed baffles are respectively arranged on two sides of a table top of the operating table, the two groups of connecting components are respectively detachably connected to side rails on two sides of the operating table, and the two groups of telescopic bed baffles are all arranged on the operating table through adjacent connecting components. The utility model has the effects of preventing the patient from falling from the operation table and simultaneously compensating the defect of using the binding belt for constraint.

Description

Anti-falling device for operating bed

Technical Field

The utility model relates to the field of medical equipment, in particular to an anti-falling bed device for an operating bed.

Background

With the development of science and technology, the electric operating table is widely applied to various surgical operations and consists of four parts, namely a table top, an electric control part, a main body and accessories. The operation table top is generally composed of a head plate 31, a back plate 32, a seat plate 33 and leg plates 34, so as to meet the requirement of multi-posture support of a patient and enable the patient to lie in different postures. The adjustment of the inclination angle of the table top of the operation table needs to be controlled by a wire controller, and the wire controller is clamped on the operation table side rail 35, as shown in fig. 1.

At present, because of the operation requirement of operators, the standard width is within 60 cm, patients can sometimes generate agitation due to factors such as tension, discomfort and the like before operation or during anesthesia and recovery period, and the falling risk of the patients is easily caused by a narrower bed surface. To avoid this, surgical beds are often equipped with a harness for restraining certain parts of the patient, such as the wrist, leg, etc.

Aiming at the related technology, the inventor finds that the prior mode of restraining the patient by using the body tie has the defects that if the body tie is too tightly restrained, the patient is easy to have the condition of blood non-circulation at the restrained position, the discomfort of the patient is aggravated, and especially when the patient is in a agitation state, the skin injury is more easy to be caused by the too tightly restrained; if the binding belt is too loose, a good binding effect cannot be achieved.

Disclosure of Invention

In order to prevent a patient from falling from an operation table and make up for the defect of restraint by using a body-shaping belt, the utility model provides an anti-falling device for the operation table.

The utility model provides an anti-falling device for an operation table, which adopts the following technical scheme:

the utility model provides an anti-falling bed device for operating tables, includes two sets of flexible bed shelves and two sets of coupling assembling, two sets of flexible bed shelves set up respectively in operating tables mesa both sides, two sets of coupling assembling can be dismantled respectively and connect on the limit rail of operating tables both sides, two sets of flexible bed shelves are all installed on the operating tables through adjacent coupling assembling.

Through adopting above-mentioned technical scheme, before the operation or after the operation is finished, install two sets of flexible bed shelves in the operation table both sides through coupling assembling respectively to play the guard action to the patient, prevent that the patient from falling from the operation table, compensatied simultaneously and used the not enough of restraint in the tie.

Optionally, coupling assembling includes two sets of locking pieces and a dead lever, the locking piece can be dismantled and connect on the operation bed limit rail, the dead lever sets up between two sets of locking pieces, rotate on the dead lever and be connected with the bracing piece, the bracing piece other end and flexible bed shelves fixed connection.

Through adopting above-mentioned technical scheme, install flexible bed shelves in the operating table both sides through the locking piece, when needing to perform the operation, rotate the bracing piece, rotate flexible bed shelves to operating table mesa below to the doctor of being convenient for performs the operation.

Optionally, the bracing piece is kept away from flexible bed shelves one end fixedly connected with and is rotated the sleeve, rotate the coaxial swivelling joint of sleeve on the dead lever, be provided with the setting element on the dead lever, the setting element is used for locking to rotate the sleeve.

Through adopting above-mentioned technical scheme, when needing flexible bed shelves to protect, rotate flexible bed shelves to the operation table mesa height above, the rethread setting element will rotate the sleeve fixedly to accomplish the locking to flexible bed shelves, improved the stability when flexible bed shelves are protected.

Optionally, the locking piece includes grip block and locking bolt, the grip block joint is on the operation table limit rail, the equal fixedly connected with fixed sleeve in dead lever both ends, fixed sleeve is used for locating on the locking bolt with the axle sleeve, locking bolt and grip block threaded connection.

Through adopting above-mentioned technical scheme, when installing the dead lever, earlier with two grip blocks joint on the limit rail, locate two locking bolt with the fixed sleeve of dead lever both ends respectively on again, then with two locking bolt respectively with two grip block threaded connection, when rotating to locking bolt, fixed sleeve and grip block support tightly, accomplish the installation to the dead lever, easy operation is convenient.

Optionally, the setting element includes dog, positioning spring and positioning sleeve, dog fixed connection is on the dead lever, on the dead lever was located to the coaxial cover of positioning sleeve, positioning spring fixed connection is between dog and positioning sleeve, one fixedly connected with gag lever post on the rotation sleeve week lateral wall, the spacing groove has been seted up to the positioning sleeve inside wall, the spacing groove is seted up along the positioning sleeve axial, gag lever post sliding connection is in the spacing inslot.

By adopting the technical scheme, when the telescopic bed rail is required to be positioned, the positioning spring is in a natural state, and the limiting rod is clamped in the limiting groove, so that the rotating sleeve is locked, namely the telescopic bed rail is locked; when the telescopic bed rail is required to be rotated, the positioning sleeve is pushed towards the direction close to the stop block, the positioning spring is compressed, and the limiting rod is separated from the limiting groove, so that the locking of the rotating sleeve is released, namely the locking of the telescopic bed rail is released, the telescopic bed rail is conveniently rotated below the table top of the operating table, and a doctor can conveniently operate.

Optionally, the fixed sleeve inner wall fixedly connected with guide block, the guide way has been seted up on the dead lever week lateral wall, the guide way is seted up along the dead lever axial, guide block sliding connection is in the guide way.

Through adopting above-mentioned technical scheme, when promoting the positioning sleeve, guide block sliding connection is in the guide way to play the guide effect to the positioning sleeve, improved the gliding stability of positioning sleeve.

Optionally, the flexible bed shelves include first baffle and two second baffles, first baffle is located between two second baffles, first baffle and bracing piece fixed connection, first baffle and second baffle pass through the telescopic link and are connected.

By adopting the technical scheme, when the table top of the operating table is in a horizontal state before or after the operation is finished, the telescopic rod can be pulled to extend the operating table top, so that the second baffle is unfolded, a patient is protected, and the patient is prevented from falling down to the table; if the operating table top is in an inclined state, the telescopic bed rail cannot be unfolded, and the telescopic rods can be contracted, so that the two second baffle plates are folded at the first baffle plate, and the protective effect on the upper body of a patient is achieved, and therefore the applicability of the telescopic bed rail is improved.

Optionally, the first baffle corresponds operation table mesa bedplate setting, two the second baffle corresponds operation table mesa backplate and leg board setting respectively, the holding tank has been seted up on the first baffle, the holding tank is used for accomodating the telescopic link, works as when the telescopic link shrink is gone into in the holding tank, the second baffle is located first baffle and is towards operation table mesa one side.

Through adopting above-mentioned technical scheme, when the telescopic link shrink advances the holding tank, the second baffle is located first baffle towards operation table mesa one side, and first baffle and two second baffles all correspond operation table mesa bedplate department and set up this moment to be convenient for carry out tilting operation to operation table mesa backplate, bedplate and leg board.

In summary, the present utility model includes at least one of the following beneficial technical effects:

before or after the operation, two groups of telescopic bed baffles are respectively arranged at two sides of the operation bed through connecting components, so that a protection effect is provided for a patient, the patient is prevented from falling from the operation bed, and the defect of using a binding belt for constraint is overcome;

the telescopic bed shelves are arranged at two sides of the operating table through the locking piece, and when an operation is needed, the supporting rods are rotated to rotate the telescopic bed shelves to the lower part of the table top of the operating table, so that a doctor can conveniently perform the operation;

when the operation table surface is in a horizontal state before or after the operation, the telescopic rod can be pulled to extend the operation table surface, so that the second baffle is unfolded, and a patient is protected to prevent the patient from falling down to the bed; if the operating table top is in an inclined state, the telescopic bed rail cannot be unfolded, and the telescopic rods can be contracted, so that the two second baffle plates are folded at the first baffle plate, and the protective effect on the upper body of a patient is achieved, and therefore the applicability of the telescopic bed rail is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of an embodiment of the present utility model, primarily for showing the connection assembly and telescoping bed stop;

FIG. 3 is a schematic view of a portion of an embodiment of the present utility model, mainly for showing a locking member;

FIG. 4 is a cross-sectional view of a portion of an embodiment of the present utility model, primarily for illustrating a positioning member;

fig. 5 is a left side view in partial cross-section of an embodiment of the present utility model, mainly for showing a telescopic rod.

Reference numerals illustrate: 1. a connection assembly; 11. a locking member; 111. a clamping block; 112. rotating the handle; 113. a locking bolt; 114. a clamping groove; 12. a fixed rod; 121. a rotating groove; 13. a fixed sleeve; 14. a support rod; 15. rotating the sleeve; 16. a reinforcing rod; 17. a positioning piece; 171. a stop block; 172. a positioning spring; 173. positioning a sleeve; 174. a limit rod; 175. a limit groove; 176. a guide block; 177. a guide groove; 2. a telescopic bed rail; 21. a first baffle; 211. a holding groove; 212. a receiving groove; 22. a second baffle; 23. a telescopic rod; 231. a first telescopic rod; 232. a second telescopic rod; 233. a third telescopic rod; 234. a first chute; 235. a second chute; 236. a locking groove; 237. a locking spring; 238. a clamping ball; 239. a locking hole; 31. a head plate; 32. a back plate; 33. a seat plate; 34. leg plates; 35. side rails.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses an anti-falling device for an operation table.

Referring to fig. 1, an anti-falling device for an operating table comprises two groups of connecting assemblies 1 and two groups of telescopic bed blocks 2, wherein the two groups of connecting assemblies 1 are respectively arranged in one-to-one correspondence with the two groups of telescopic bed blocks 2, and the two groups of connecting assemblies 1 are respectively arranged on side rails 35 at two sides of the operating table. The two groups of telescopic bed baffles 2 are respectively arranged on the corresponding connecting assemblies 1 and are respectively positioned at two sides of the operating bed and used for preventing a patient from falling from the operating bed.

During operation, the connecting component 1 can be rotated to rotate the telescopic bed rail 2 below the height of the operating table surface, thereby facilitating the operation of doctors. When the telescopic bed rail 2 is rotated to be above the height of the operating table surface before or after the operation is finished, the patient is protected. Meanwhile, in order to meet the protection of patients in different positions, the telescopic bed rail 2 can be contracted, so that the inclination state of the operating table top can be conveniently adjusted.

Referring to fig. 2 and 3, the connection assembly 1 includes two sets of locking members 11 and a fixing rod 12, the two sets of locking members 11 are mounted on the operation bedside rail 35, the fixing rod 12 is located between the two sets of locking members 11, and the telescopic bed rail 2 is rotatably connected to the fixing rod 12. The locking piece 11 comprises a clamping block 111, a rotating handle 112 and a locking bolt 113, wherein a clamping groove 114 is formed in one side of the clamping block 111, the clamping groove 114 is clamped on the operating bed side rail 35, a threaded hole is formed in one side, away from the clamping groove 114, of the clamping block 111, and is used for enabling the locking bolt 113 to be inserted, and the threaded hole is communicated with the clamping groove 114. The turning handle 112 is fixedly connected with one end of the locking bolt 113, so that the locking bolt 113 can be turned conveniently. The fixed sleeve 13 is fixedly connected to the two ends of the fixed rod 12, the axial direction of the fixed sleeve 13 is perpendicular to the axial direction of the fixed rod 12, and the two fixed sleeves 13 are respectively sleeved on the two locking bolts 113.

When the fixed rod 12 is installed, the two clamping blocks 111 are clamped on the side rail 35, the fixed sleeves 13 at the two ends of the fixed rod 12 are respectively sleeved on the two locking bolts 113, the two locking bolts 113 are respectively connected with the two clamping blocks 111 in a threaded mode, and when the fixed sleeve 13 abuts against the clamping blocks 111 after the fixed rod 12 is rotated to the rotating handle 112, the fixed sleeve 13 is in tight contact with the clamping blocks 111, the fixed rod 12 is installed.

Referring to fig. 2, two support rods 14 are rotatably connected to the fixed rod 12, one end of each support rod 14 is fixedly connected to a rotating sleeve 15, two rotating grooves 121 are spaced apart from each other on the fixed rod 12, the two rotating sleeves 15 are respectively rotatably connected to the two rotating grooves 121, the rotating sleeves 15 are coaxially arranged with the fixed rod 12, and the length direction of each support rod 14 is axially perpendicular to the rotating sleeve 15. The telescopic bed rail 2 is fixedly connected to the other ends of the two support rods 14, and a reinforcing rod 16 is fixedly connected between the two support rods 14 in order to improve the support strength of the two support rods 14.

Referring to fig. 2 and 4, one end of the fixing rod 12 is further provided with a positioning member 17, the positioning member 17 is located between the fixing sleeve 13 and the support rod 14 adjacent thereto, and the positioning member 17 is used for locking the telescopic bed rail 2. The positioning piece 17 comprises a stop 171, a positioning spring 172 and a positioning sleeve 173, wherein the stop 171 is fixedly connected to one end of the fixed rod 12, the positioning sleeve 173 is coaxially sleeved on the fixed rod 12, and the positioning spring 172 is fixedly connected between the stop 171 and the positioning sleeve 173. Two stop bars 174 are fixedly connected to the peripheral side wall of the rotary sleeve 15, the length direction of the stop bars 174 is parallel to the axial direction of the rotary sleeve 15, and the two stop bars 174 are oppositely arranged by taking the horizontal plane where the axis of the rotary sleeve 15 is located as a symmetrical plane. Two limiting grooves 175 are formed in the inner wall of the positioning sleeve 173, the two limiting grooves 175 are formed in the axial direction of the positioning sleeve 173, one end, close to the stop block 171, of each limiting groove 175 is not opened, the two limiting rods 174 are arranged in one-to-one correspondence, and the limiting rods 174 are connected in the corresponding limiting grooves 175 in a sliding mode.

When the telescopic bed rail 2 needs to be positioned, the positioning spring 172 is in a natural state, and the limiting rod 174 is clamped in the limiting groove 175, so that the rotating sleeve 15 is locked, namely the telescopic bed rail 2 is locked. When the telescopic bed rail 2 needs to be rotated, the positioning sleeve 173 is pushed towards the direction approaching the stop block 171, the positioning spring 172 is compressed, and the limiting rod 174 is separated from the limiting groove 175, so that the locking of the rotating sleeve 15, namely the telescopic bed rail 2, is released, and the telescopic bed rail 2 is convenient to rotate.

Referring to fig. 4, in order to improve the sliding stability of the positioning sleeve 173, two guide blocks 176 are fixedly connected to the inner wall of the positioning sleeve 173, and the two guide blocks 176 are disposed opposite to each other with the plane where the axis of the positioning sleeve 173 is located as a symmetry plane. Two guide grooves 177 are formed in the peripheral side wall, close to one end of the stop block 171, of the fixing rod 12, the two guide grooves 177 are in one-to-one correspondence with the two guide blocks 176, the two guide blocks 176 slide in the corresponding guide grooves 177 respectively, the guide grooves 177 are formed in the axial direction of the fixing rod 12, and the guide grooves 177 are located between the rotating sleeve 15 and the stop block 171. When the positioning sleeve 173 is pushed, the guide block 176 is slidably connected in the guide groove 177, so as to guide the positioning sleeve 173, and improve the sliding stability of the positioning sleeve 173.

Referring to fig. 1 and 2, the telescopic bed rail 2 includes a first baffle 21, two second baffles 22, and two sets of telescopic rods 23, the first baffle 21 is located between the two second baffles 22, and each second baffle 22 and the first baffle 21 are connected by a set of telescopic rods 23. The first baffle plate 21 is fixedly connected with the two support rods 14, the first baffle plate 21 is correspondingly arranged with the seat plate 33 of the operating table surface, and the two second baffle plates 22 are correspondingly arranged with the back plate 32 and the leg plates 34 of the operating table surface respectively. When the operating table surface is horizontal, the telescopic rod 23 can be extended to extend between the first baffle 21 and the two second baffles 22, so that the patient is protected. When the operating table top is in an inclined state, the telescopic rod 23 can be contracted, so that the first baffle 21 and the two second baffles 22 are folded, and the patient can be conveniently protected in the inclined state of the operating table. In order to facilitate rotating the telescopic baffle, a holding groove 211 is formed in the upper portion of the first baffle 21, so that a medical staff can hold the first baffle 21 conveniently.

Referring to fig. 1 and 2, two sets of telescopic rods 23 are respectively disposed at two ends of the first baffle 21, each set of telescopic rods 23 includes two telescopic rods 23, the length direction of the telescopic rods 23 is parallel to the length direction of the first baffle 21, and the two telescopic rods 23 are arranged along the width direction of the first baffle 21. Two groups of accommodating grooves 212 are formed in one side, facing the table surface of the operating table, of the first baffle plate 21, the two groups of accommodating grooves 212 are respectively located at two ends of the first baffle plate 21, and the two groups of accommodating grooves 212 are in one-to-one correspondence with the two groups of telescopic rods 23. Two sets of holding tanks 212 keep away from each other one end and all open, and every holding tank 212 of group all sets up to two, and two holding tanks 212 set up with two telescopic links 23 one-to-one of a set of respectively, and telescopic link 23 sliding connection is in corresponding holding tank 212.

Referring to fig. 2, the telescopic rod 23 includes a first telescopic rod 231, a second telescopic rod 232 and a third telescopic rod 233, the first telescopic rod 231 is slidably connected in the corresponding accommodating groove 212, a first sliding groove 234 is formed on one side of the first telescopic rod 231, which faces away from the accommodating groove 212, the first sliding groove 234 is opened at one end, which is far away from the first baffle 21, of the second telescopic rod 232, a second sliding groove 235 is formed on one side, which faces away from the first sliding groove 234, of the second sliding groove 235 is opened at one end, which is far away from the first telescopic rod 231, the third telescopic rod 233 is slidably connected in the second sliding groove 235, and two third telescopic rods 233 of the same group are fixedly connected on one side, which faces away from the second sliding groove 235, of the second baffle 22, which faces away from the table top of the operating table. The length of the second baffle 22 is not greater than half of the length of the first baffle 21, and when the telescopic rod 23 is retracted into the accommodating groove 212, the second baffle 22 is positioned at one side of the first baffle 21 close to the operating table surface, so that the second baffle 22 is accommodated, and the operating table surface is conveniently adjusted.

Referring to fig. 5, the top of the first telescopic rod 231, the second telescopic rod 232 and the third telescopic rod 233, which are close to one end of the first baffle 21, are provided with locking grooves 236, the locking grooves 236 are provided in the vertical direction, locking springs 237 are fixedly connected in the locking grooves 236, the locking springs 237 stretch along the length direction of the locking grooves 236, and clamping balls 238 are fixedly connected to the other ends of the locking springs 237. The top of the inner wall of the accommodating groove 212, the first sliding groove 234 and the second sliding groove 235, which is far away from one end of the first baffle 21, is provided with a locking hole 239, and the shape of the locking hole 239 is matched with that of the clamping ball 238. When the telescopic rod 23 is unfolded, the clamping ball 238 is positioned in the locking groove 236, and when the telescopic rod 23 slides into the locking hole 239, the clamping ball 238 slides out of the locking groove 236 under the action of the locking spring 237 and is clamped in the corresponding locking hole 239, so that the telescopic rod 23 is locked, and the stability of the second baffle 22 when being unfolded is improved. To facilitate pushing of the telescoping rod 23, the locking hole 239 is provided with a height less than the radius of the snap ball 238, facilitating pushing of the snap ball 238 back into the locking groove 236 when pushing the telescoping rod 23.

The embodiment of the utility model provides an anti-falling device for an operation table, which is implemented by the following principle: when before or after the operation, the telescopic bed rail 2 can be rotated to be positioned above the height of the table top of the operation table, the positioning sleeve 173 is used to clamp the limiting rod 174 on the rotating sleeve 15, so that the rotating sleeve 15, i.e. the telescopic bed rail 2, is fixed. At this time, if the operating table top is in a horizontal state, the telescopic rod 23 can be pulled to extend, so that the second baffle 22 is unfolded to protect the patient and prevent the patient from falling down to the bed. If the operating table top is in an inclined state, the telescopic bed rail 2 cannot be unfolded, and the telescopic rods 23 can be contracted, so that the two second baffle plates 22 are folded at the first baffle plate 21 to protect the upper half of the patient.

During operation, the second baffle 22 can be folded to the first baffle 21, and the positioning sleeve 173 is pushed, so that the limiting rod 174 is separated from the limiting groove 175 of the positioning sleeve 173, and the locking of the telescopic bed rail 2 is released. The first baffle 21 is rotated downwards to be in a vertical state, the positioning sleeve 173 is loosened, and the limiting rod 174 is clamped in the limiting groove 175 again, so that the rotating sleeve 15 is fixed, namely the telescopic bed rail 2 is fixed, and at the moment, the telescopic bed rail 2 is fixed below the height of the table top of the operating table, so that a doctor can operate conveniently.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. An anti-falling device for an operation table is characterized in that: including two sets of flexible bed shelves (2) and two sets of coupling assembling (1), two sets of flexible bed shelves (2) set up respectively in operating table mesa both sides, two sets of coupling assembling (1) can be dismantled respectively and connect on side rail (35) of operating table both sides, two sets of flexible bed shelves (2) are all installed on the operating table through adjacent coupling assembling (1).

2. The anti-falling bed device for an operating bed according to claim 1, wherein: the connecting assembly (1) comprises two groups of locking pieces (11) and a fixing rod (12), the locking pieces (11) are detachably connected to a side rail (35) of an operation bed, the fixing rod (12) is arranged between the two groups of locking pieces (11), the fixing rod (12) is rotationally connected with a supporting rod (14), and the other end of the supporting rod (14) is fixedly connected with a telescopic bed rail (2).

3. The anti-falling bed device for an operating bed according to claim 2, wherein: the telescopic bed is characterized in that one end of the supporting rod (14) away from the telescopic bed rail (2) is fixedly connected with a rotating sleeve (15), the rotating sleeve (15) is coaxially connected onto the fixed rod (12) in a rotating mode, a positioning piece (17) is arranged on the fixed rod (12), and the positioning piece (17) is used for locking the rotating sleeve (15).

4. The anti-falling bed device for an operating bed according to claim 2, wherein: the locking piece (11) comprises a clamping block (111) and a locking bolt (113), the clamping block (111) is clamped on a side rail (35) of an operation bed, two ends of a fixing rod (12) are fixedly connected with fixing sleeves (13), the fixing sleeves (13) are coaxially sleeved on the locking bolt (113), and the locking bolt (113) is in threaded connection with the clamping block (111).

5. A bed fall arrest device for an operating bed as claimed in claim 3, wherein: the locating piece (17) comprises a stop block (171), a locating spring (172) and a locating sleeve (173), wherein the stop block (171) is fixedly connected to a fixed rod (12), the locating sleeve (173) is coaxially sleeved on the fixed rod (12), the locating spring (172) is fixedly connected between the stop block (171) and the locating sleeve (173), one limiting rod (174) is fixedly connected to the peripheral side wall of the rotating sleeve (15), a limiting groove (175) is formed in the inner side wall of the locating sleeve (173), the limiting groove (175) is formed in the axial direction of the locating sleeve (173), and the limiting rod (174) is slidably connected in the limiting groove (175).

6. The anti-falling device for an operating table according to claim 5, wherein: the positioning sleeve (173) is characterized in that a guide block (176) is fixedly connected to the inner wall of the positioning sleeve (173), a guide groove (177) is formed in the peripheral side wall of the fixed rod (12), the guide groove (177) is formed in the axial direction of the fixed rod (12), and the guide block (176) is slidably connected in the guide groove (177).

7. The anti-falling bed device for an operating bed according to claim 2, wherein: the telescopic bed rail (2) comprises a first baffle (21) and two second baffles (22), wherein the first baffle (21) is positioned between the two second baffles (22), the first baffle (21) is fixedly connected with the supporting rod (14), and the first baffle (21) and the second baffles (22) are connected through telescopic rods (23).

8. The anti-falling bed device for an operating bed according to claim 7, wherein: the first baffle (21) corresponds operation table surface seat board (33) and sets up, two second baffle (22) correspond operation table surface backplate (32) and leg board (34) and set up respectively, holding tank (212) have been seted up on the first baffle (21), holding tank (212) are used for accomodating telescopic link (23), works as when telescopic link (23) shrink is gone into in holding tank (212), second baffle (22) deviate from operation table surface one side and first baffle (21) towards operation table surface one side laminating.