阅读说明：本技术 一种骨科护理用可控压力的持续负压引流装置 (Controllable-pressure continuous negative-pressure drainage device for orthopedic nursing ) 是由 陈文秀 瞿邱炜 许玉蓉 徐李华 邱峰燕 李建 于 2021-06-21 设计创作，主要内容包括：本发明公开了一种骨科护理用可控压力的持续负压引流装置,属于医疗器械技术领域,包括底板,所述底板的四个边角下方均固定安装有万向轮,所述底板的上方固定安装有支撑柱和推动把手,所述支撑柱的顶部固定安装有支撑板；所述支撑板的上方固定安装有负压吸引箱,所述负压吸引箱的右侧连通有具有单向气阀的进气管和具有单向阀的出气管,所述支撑板的上方通过L型柱固定安装有引流筒,所述进气管的一端密封穿过引流筒的上表面并延伸至引流筒的内部；驱动组件可对引流压力实现可调节且能保持持续引流,并配合更换组件和连接组件,方便对引流集液瓶进行更换,并利用限位单元对引流管进行收纳整理限位,提升了装置的工作效率和使用效果。(The invention discloses a pressure-controllable continuous negative pressure drainage device for orthopedic nursing, which belongs to the technical field of medical instruments and comprises a bottom plate, universal wheels are fixedly arranged below four corners of the bottom plate, a support column and a pushing handle are fixedly arranged above the bottom plate, and a support plate is fixedly arranged at the top of the support column; a negative pressure suction box is fixedly arranged above the supporting plate, the right side of the negative pressure suction box is communicated with an air inlet pipe with a one-way air valve and an air outlet pipe with a one-way valve, a drainage cylinder is fixedly arranged above the supporting plate through an L-shaped column, and one end of the air inlet pipe penetrates through the upper surface of the drainage cylinder in a sealing manner and extends into the drainage cylinder; drive assembly can realize the adjustable and can keep lasting drainage to drainage pressure to the cooperation is changed subassembly and coupling assembling, and the convenience is changed drainage liquid collecting bottle, and it is spacing to utilize spacing unit to accomodate the arrangement to the drainage tube, has promoted the work efficiency and the result of use of device.)

1. The utility model provides an orthopedics nursing is with continuous negative pressure drainage device of controllable pressure which characterized in that: the universal wheel type lifting device comprises a bottom plate (1), universal wheels are fixedly mounted below four corners of the bottom plate (1), a supporting column (2) and a pushing handle (3) are fixedly mounted above the bottom plate (1), and a supporting plate (4) is fixedly mounted at the top of the supporting column (2);

a negative pressure suction box (5) is fixedly mounted above the supporting plate (4), the right side of the negative pressure suction box (5) is communicated with an air inlet pipe (6) with a one-way air valve and an air outlet pipe (7) with a one-way valve, a drainage cylinder (9) is fixedly mounted above the supporting plate (4) through an L-shaped column (8), one end of the air inlet pipe (6) penetrates through the upper surface of the drainage cylinder (9) in a sealing mode and extends into the drainage cylinder (9), a drainage pipe (10) is communicated with the side of the drainage cylinder (9), one end of the drainage pipe (10) is fixedly connected with a drainage needle head (11), and a limiting unit for containing and arranging the limiting drainage pipe (10) is arranged on the supporting plate (4);

a drainage liquid collecting bottle (12) positioned below the drainage tube (9) is arranged on the supporting plate (4), a liquid outlet pipe (13) with a one-way throttle valve at the lower end of the drainage tube (9) is communicated with a liquid inlet pipe (14) of the drainage liquid collecting bottle (12) through a connecting assembly, and a replacing assembly convenient for replacing the drainage liquid collecting bottle (12) is arranged below the supporting plate (4);

the inside sealing slidable mounting of negative pressure suction box (5) has piston (17), the inside of negative pressure suction box (5) is provided with drive assembly, piston (17) is in negative pressure suction box (5) interior left and right sides reciprocating motion under drive assembly's drive effect to the atmospheric pressure difference that produces makes liquid pass through in drainage tube (10) and drainage tube (9) drainage to drainage collection liquid bottle (12).

2. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 1, characterized in that: drive assembly includes threaded rod (16), servo motor (18), L type pole (19) and movable block (23), fixed mounting has fixed plate (15) on the roof of negative pressure suction box (5), the one end of threaded rod (16) and the output shaft fixed connection of servo motor (18), the other end of threaded rod (16) is rotated with the left side of fixed plate (15) and is connected, servo motor (18) fixed mounting is on the left side board of negative pressure suction box (5), movable block (23) threaded connection is on threaded rod (16), the one end and the movable block (23) fixed connection of L type pole (19), the other end of L type pole (19) and the left surface fixed connection of piston (17).

3. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 2, characterized in that: fixed mounting has slide bar (20) between the left side board of fixed plate (15) and vacuum aspiration case (5), slidable mounting has sliding sleeve (21) on slide bar (20), fixed connection between sliding sleeve (21) and movable block (23), the right side fixed mounting of fixed plate (15) has telescopic link (22), the loose axle tip of telescopic link (22) and the left surface fixed connection of piston (17).

4. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 1, characterized in that: the replacing assembly comprises a U-shaped plate (24), a two-way screw rod (25), two movable blocks II (26), two connecting rods (27) and a placing seat (28), the U-shaped plate (24) is fixedly arranged below the supporting plate (4), two ends of the two-way screw rod (25) are respectively and rotatably connected with two side plates of the U-shaped plate (24) through rotating shafts (29), the outer end of the rotating shaft (29) positioned on one side of the two-way screw rod (25) is fixedly connected with a crank, and the two movable blocks II (26) are respectively in threaded connection with two sections of threads of the two-way screw rod (25);

one end of each of the two connecting rods (27) is correspondingly hinged with the two movable blocks (26), the other end of each of the two connecting rods (27) is hinged with the lower surface of the placing seat (28), the bottom of the drainage liquid collecting bottle (12) is placed in a groove above the placing seat (28), and the top of the drainage liquid collecting bottle (12) penetrates through a channel (30) formed in the supporting plate (4) and then extends to the position above the supporting plate (4) to be communicated with the drainage tube (9).

5. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 1, characterized in that: coupling assembling includes internal thread piece (31), the feed liquor pipe (14) radius unanimity and the surface of drain pipe (13) and drainage liquid collecting bottle (12) of drainage tube (9) all are provided with the screw thread, internal thread piece (31) threaded connection is between drain pipe (13) and feed liquor pipe (14).

6. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 4, characterized in that: the two side inboard fixed mounting of U template (24) has guided way (32), slidable mounting has guide block (33) in guided way (32), the both sides of placing seat (28) respectively with two guide block (33) fixed connection.

7. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 1, characterized in that: the limiting unit comprises two second sliding blocks (34), two sliding grooves (35) are formed in the supporting plate (4), the two sliding blocks (34) are correspondingly and slidably mounted in the two sliding grooves (35), the two clamping plates (36) are correspondingly and fixedly connected with the upper portions of the two sliding blocks (34), two opposite sides of the clamping plates (36) are fixedly connected with a baffle (37) respectively, and arc-shaped clamping openings are formed in the opposite side faces of the baffle (37) respectively.

8. The orthopedic care pressure-controllable continuous negative pressure drainage device according to claim 7, characterized in that: and a spring (38) is arranged between the side of the second sliding block (34) and the side wall of the second sliding groove (35).

Technical Field

The invention belongs to the technical field of orthopedic nursing, and particularly relates to a pressure-controllable continuous negative pressure drainage device for orthopedic nursing.

Background

The negative pressure drainage device is used for nursing wounds of general patients after orthopedic operations, is mostly used for large orthopedic operations and large-area subcutaneous soft tissue injuries, infectious osteoarticular diseases and the like, can generate negative pressure in wound areas besides the drainage maintaining effect, maintains more efficient drainage effect and clings to wound surfaces, reduces exudation, prevents skin sheets from floating and the like, and is accepted by most doctors. The technology not only reduces the use of antibiotics, effectively reduces cross infection in hospital and shortens hospitalization time, but also does not need to change the medicine every day, so that patients do not need to change the medicine, medical staff do not need to frequently change the medicine, and simultaneously, the psychological pressure of the patients is relieved to a great extent.

At present, drainage device needs medical staff manual operation at the drainage process, is difficult to control drainage pressure and lasts the drainage, increases the misery of patient's drainage, increases medical staff's working strength simultaneously, and collects full back at drainage collection liquid bottle, changes drainage collection liquid bottle inconvenient, waste time and energy to it leaks to cause liquid to appear spilling easily. In addition, current drainage device does not have and accomodates limit structure, can't accomodate the arrangement to the drainage tube after the drainage is ended spacing, and medical personnel when removing drainage device, the drainage tube takes place the winding with other instruments among the drainage device easily, and then increases medical personnel to the degree of difficulty of drainage device clearance easily.

Disclosure of Invention

The invention aims to provide a pressure-controllable continuous negative pressure drainage device for orthopedic nursing, which aims to solve the problems that the drainage device provided by the background technology needs manual operation of medical staff in the drainage process, the drainage pressure and continuous drainage are difficult to control, the pain of the patient in drainage is increased, the working strength of the medical staff is increased, and after a drainage liquid collecting bottle is fully collected, the drainage liquid collecting bottle is inconvenient to replace, wastes time and labor, and easily causes liquid leakage. In addition, current drainage device does not have and accomodates limit structure, can't accomodate the arrangement spacing to the drainage tube after the drainage, and medical personnel when removing drainage device, the drainage tube takes place to twine with other instruments among the drainage device easily, and then increases the problem of medical personnel to the degree of difficulty of drainage device clearance easily.

In order to achieve the purpose, the invention provides the following technical scheme: the continuous negative pressure drainage device with controllable pressure for orthopedic nursing comprises a bottom plate, universal wheels are fixedly mounted below four corners of the bottom plate, a support column and a pushing handle are fixedly mounted above the bottom plate, and a support plate is fixedly mounted at the top of the support column;

a negative pressure suction box is fixedly arranged above the supporting plate, the right side of the negative pressure suction box is communicated with an air inlet pipe with a one-way air valve and an air outlet pipe with a one-way valve, a drainage cylinder is fixedly arranged above the supporting plate through an L-shaped column, one end of the air inlet pipe penetrates through the upper surface of the drainage cylinder in a sealing manner and extends into the drainage cylinder, a drainage tube is communicated with the side of the drainage cylinder, one end of the drainage tube is fixedly connected with a drainage needle head, and a limiting unit for containing and arranging a limiting drainage tube is arranged on the supporting plate;

a drainage liquid collecting bottle positioned below the drainage tube is arranged on the supporting plate, a liquid outlet pipe with a one-way throttle valve at the lower end of the drainage tube is communicated with a liquid inlet pipe of the drainage liquid collecting bottle through a connecting assembly, and a replacing assembly convenient for replacing the drainage liquid collecting bottle is arranged below the supporting plate;

the inside sealing slidable mounting of negative pressure suction box has the piston, the inside of negative pressure suction box is provided with drive assembly, reciprocating motion about the piston is in negative pressure suction box under drive assembly's drive effect to the atmospheric pressure difference that produces makes liquid pass through drainage tube and drainage tube drainage to drainage collection liquid bottle in.

By adopting the scheme, the driving assembly is arranged, the moving speed of the first adjustable movable block on the threaded rod to the left or the right can be adjusted by adjusting the rotating speed of the servo motor, so that the sliding speed of the piston in the negative pressure suction box can be controlled, the drainage pressure can be adjusted according to the wound condition of a patient and can be kept continuously drained, the pain of the patient in drainage is reduced, the working pressure of medical staff is reduced, and the operation is simple and the use is convenient; through the arrangement of the replacing component and the connecting component, the two movable blocks are driven to be close to or far away from each other through the adjustment of the two-way screw rod, the two movable blocks are matched with the hinging action between the two movable blocks and the connecting rod and the placing seat, the drainage liquid collecting bottle on the placing seat is driven to ascend or descend under the supporting and limiting action of the guide rail and the guide block, the drainage liquid collecting bottle can be conveniently mounted and dismounted through the matching of the internal thread block and the threaded connection between the liquid outlet pipe and the liquid inlet pipe, the phenomenon that the drainage liquid collecting bottle is toppled due to unstable fixation and liquid overflows is avoided, the drainage liquid collecting bottle is conveniently replaced, the stability of the drainage liquid collecting bottle is good, and the working efficiency is improved; through setting up the limiting unit, utilize slider two to slide in spout two, can place the drainage tube between two baffles, the elasticity of cooperation spring for two baffles are close to the laminating each other, thereby it is spacing to accomodate the arrangement to the drainage tube that lies in between two baffles, avoid drainage tube and other equipment winding mutually, and then reduce the degree of difficulty of medical personnel to drainage device clearance.

In the above scheme, it should be noted that the servo motor is electrically connected to an external power supply.

As a preferred embodiment, drive assembly includes threaded rod, servo motor, L type pole and movable block one, fixed mounting has the fixed plate on the roof of negative pressure suction box, the one end of threaded rod and servo motor's output shaft fixed connection, the other end of threaded rod is rotated with the left side of fixed plate and is connected, servo motor fixed mounting is on the left side board of negative pressure suction box, a movable block threaded connection is on the threaded rod, the one end and the movable block fixed connection of L type pole, the other end of L type pole and the left surface fixed connection of piston.

Adopt above-mentioned scheme, make the movable block one carry out the side-to-side motion on the threaded rod through being provided with the threaded rod, thereby drive piston side-to-side motion and produce the atmospheric pressure difference, realize the drainage effect to patient's wound, and through adjusting servo motor's rotational speed, adjustable movable block one carries out the removal speed left or right on the threaded rod, thereby can attract incasement gliding speed to the piston at the negative pressure and carry out controllablely, and then can realize adjustablely and can keep lasting the drainage to drainage pressure according to patient's wound condition, the misery of patient's drainage has been reduced and the operating pressure who adds medical staff has been reduced.

As a preferred embodiment, fixed mounting has the slide bar between the left side board of fixed plate and vacuum aspiration case, slidable mounting has the sliding sleeve on the slide bar, fixed connection between sliding sleeve and the movable block one, the right side fixed mounting of fixed plate has the telescopic link, the movable shaft tip of telescopic link and the left surface fixed connection of piston.

Adopt above-mentioned scheme, through being provided with slide bar and sliding sleeve, utilize the movable block to drive the sliding sleeve and slide on the slide bar, utilize slide bar and sliding sleeve to carry on spacingly to movable block one for under the drive of threaded rod, the movable block one can not take place to deflect and stable carry out the side-to-side motion, and through being provided with the telescopic link, can support the piston, remain stability when guaranteeing the piston side-to-side motion.

As a preferred embodiment, the replacing assembly comprises a U-shaped plate, a two-way screw rod, two movable blocks II, two connecting rods and a placing seat, the U-shaped plate is fixedly arranged below the supporting plate, two ends of the two-way screw rod are respectively and rotatably connected with two side plates of the U-shaped plate through rotating shafts, the outer end of the rotating shaft positioned at one side of the two-way screw rod is fixedly connected with a crank, and the two movable blocks II are respectively in threaded connection with two sections of threads of the two-way screw rod;

two the one end of connecting rod is articulated with two movable block two correspondingly, two the other end of connecting rod is articulated with the lower surface of placing the seat respectively, place in the recess of seat top is placed in to the bottom of drainage collection liquid bottle, the top of drainage collection liquid bottle passes the top that extends to the backup pad after the passageway of seting up in the backup pad and is linked together with the drainage section of thick bamboo.

Adopt above-mentioned scheme, through being provided with two-way screw rod, adjust two-way screw rod and drive two movable blocks two and be close to each other or keep away from, cooperate two movable blocks, connecting rod and place the articulated effect between the seat, under the support limiting displacement of guided way and guide block, drive drainage collection liquid bottle on placing the seat and rise or descend to the change of taking is conveniently carried out drainage collection liquid bottle.

As a preferred embodiment, coupling assembling includes the internal thread piece, drain pipe of a drainage section of thick bamboo and drainage collection liquid bottle's feed liquor pipe radius are unanimous and the surface all is provided with the screw thread, internal thread piece threaded connection is between drain pipe and feed liquor pipe.

By adopting the scheme, the drainage liquid collecting bottle can be conveniently mounted or dismounted on the drainage tube by arranging the internal thread block, and the sealing effect is good.

As a preferred embodiment, the inner sides of the two side plates of the U-shaped plate are fixedly provided with guide rails, the guide rails are internally and slidably provided with guide blocks, and two sides of the placing seat are respectively and fixedly connected with the two guide blocks.

Adopt above-mentioned scheme, through being provided with guided way and guide block, slide from top to bottom in the guided way through placing the seat and drive the guide block, it is spacing to support placing the seat with the guided way for place the stable upwards or downstream that goes on of seat.

As a preferred embodiment, the limiting unit comprises two second sliding blocks, a second sliding groove is formed in the supporting plate, the two second sliding blocks are correspondingly and slidably mounted in the two second sliding grooves, the two clamping plates are correspondingly and fixedly connected with the upper parts of the two second sliding blocks, opposite sides of the two clamping plates are respectively and fixedly connected with a baffle plate, and arc-shaped clamping openings are respectively formed in opposite side surfaces of the two baffle plates.

Adopt above-mentioned scheme, utilize slider two to slide in spout two, can accomodate the arrangement spacing to the drainage tube that lies in between two baffles, avoid drainage tube and other equipment winding mutually, and then reduce the degree of difficulty of medical personnel to drainage device clearance.

In a preferred embodiment, a spring is arranged between the side of the second sliding block and the side wall of the second sliding chute.

Adopt above-mentioned scheme, through being provided with the spring, the elasticity that utilizes the spring makes two sliders be close to each other to make two baffles close to each other the laminating promotion and accomodate the effect to the stability of drainage tube.

Compared with the prior art, the invention has the beneficial effects that:

the continuous negative pressure drainage device with controllable pressure for orthopedic nursing is provided with the driving assembly, and can adjust the moving speed of the first movable block to the left or the right on the threaded rod by adjusting the rotating speed of the servo motor, so that the sliding speed of the piston in the negative pressure suction box can be controlled, the drainage pressure can be adjusted according to the wound condition of a patient, the continuous drainage can be kept, the pain of the patient in drainage is reduced, the working pressure of medical staff is reduced, the operation is simple, and the use is convenient;

according to the pressure-controllable continuous negative pressure drainage device for orthopedic nursing, the replacement assembly and the connection assembly are arranged, the two movable blocks are driven to be close to or far away from each other by adjusting the two-way screw rod, the two movable blocks are matched with the hinge action between the two movable blocks, the connecting rod and the placing seat, the drainage liquid collecting bottle on the placing seat is driven to ascend or descend under the supporting and limiting action of the guide rail and the guide block, the drainage liquid collecting bottle can be conveniently mounted and dismounted by matching with the threaded connection between the internal thread block and the liquid outlet pipe and the liquid inlet pipe, the situation that the liquid overflows due to the fact that the drainage liquid collecting bottle is unstably fixed and topples is avoided, the drainage liquid collecting bottle is conveniently replaced, the stability of the drainage liquid collecting bottle is good, and the working efficiency is improved;

this orthopedics nursing is with controllable pressure's continuous negative pressure drainage device utilizes slider two to slide in spout two through being provided with limiting unit, can place the drainage tube between two baffles, and the elasticity of cooperation spring makes two baffles be close to the laminating each other for it is spacing to accomodate the arrangement to the drainage tube that lies in between two baffles, avoids drainage tube and other equipment winding mutually, and then reduces the degree of difficulty that medical personnel cleared up drainage device.

Drawings

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

FIG. 2 is a schematic structural view of a front cross section of the vacuum suction box of the present invention;

FIG. 3 is a schematic structural view of a left side cross section of a U-shaped plate according to the present invention;

FIG. 4 is a schematic view of a coupling assembly of the present invention;

FIG. 5 is a schematic structural view of a baffle of the present invention;

FIG. 6 is an enlarged schematic view of the structure of the present invention at A;

FIG. 7 is an enlarged schematic view of the present invention at B.

In the figure: 1. a base plate; 2. a support pillar; 3. pushing the handle; 4. a support plate; 5. a negative pressure suction box; 6. an air inlet pipe; 7. an air outlet pipe; 8. an L-shaped column; 9. a drainage tube; 10. a drainage tube; 11. a drainage needle head; 12. a drainage liquid collection bottle; 13. a liquid outlet pipe; 14. a liquid inlet pipe; 15. a fixing plate; 16. a threaded rod; 17. a piston; 18. a servo motor; 19. an L-shaped rod; 20. a slide bar; 21. a sliding sleeve; 22. a telescopic rod; 23. a first movable block; 24. a U-shaped plate; 25. a bidirectional screw; 26. a second movable block; 27. a connecting rod; 28. a placing seat; 29. a rotating shaft; 30. a channel; 31. an internal thread block; 32. a guide rail; 33. a guide block; 34. a second sliding block; 35. a second chute; 36. a splint; 37. a baffle plate; 38. a spring.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.

Referring to fig. 1-7, the invention provides a pressure-controllable continuous negative pressure drainage device for orthopedic nursing, which comprises a bottom plate 1, universal wheels are fixedly mounted below four corners of the bottom plate 1, a support column 2 and a push handle 3 are fixedly mounted above the bottom plate 1, and a support plate 4 is fixedly mounted at the top of the support column 2;

a negative pressure suction box 5 is fixedly arranged above the supporting plate 4, the right side of the negative pressure suction box 5 is communicated with an air inlet pipe 6 with a one-way air valve and an air outlet pipe 7 with a one-way valve, a drainage cylinder 9 is fixedly arranged above the supporting plate 4 through an L-shaped column 8, one end of the air inlet pipe 6 penetrates through the upper surface of the drainage cylinder 9 in a sealing manner and extends into the drainage cylinder 9, a drainage pipe 10 is communicated with the side of the drainage cylinder 9, one end of the drainage pipe 10 is fixedly connected with a drainage needle 11, and a limiting unit for containing and arranging the limiting drainage pipe 10 is arranged on the supporting plate 4;

a drainage liquid collecting bottle 12 positioned below the drainage tube 9 is arranged on the support plate 4, a liquid outlet pipe 13 with a one-way throttle valve at the lower end of the drainage tube 9 is communicated with a liquid inlet pipe 14 of the drainage liquid collecting bottle 12 through a connecting component, and a replacing component convenient for replacing the drainage liquid collecting bottle 12 is arranged below the support plate 4;

the piston 17 is arranged in the negative pressure suction box 5 in a sealing and sliding mode, the driving assembly is arranged in the negative pressure suction box 5, the piston 17 reciprocates left and right in the negative pressure suction box 5 under the driving action of the driving assembly, and therefore liquid is drained into the drainage liquid collecting bottle 12 through the drainage tube 10 and the drainage tube 9 due to the generated air pressure difference.

The driving assembly comprises a threaded rod 16, a servo motor 18, an L-shaped rod 19 and a first movable block 23, a fixed plate 15 is fixedly mounted on a top plate of the negative pressure suction box 5, one end of the threaded rod 16 is fixedly connected with an output shaft of the servo motor 18, the other end of the threaded rod 16 is rotatably connected with the left side of the fixed plate 15, the servo motor 18 is fixedly mounted on a left side plate of the negative pressure suction box 5, the first movable block 23 is in threaded connection with the threaded rod 16, one end of the L-shaped rod 19 is fixedly connected with the first movable block 23, and the other end of the L-shaped rod 19 is fixedly connected with the left side face of the piston 17; through being provided with drive assembly, through the rotational speed of adjusting servo motor 18, adjustable movable block 23 carries out the translation rate left or right on threaded rod 16 to can carry out controllablely to piston 17 gliding speed in the suction box 5, and then can realize adjustably and can keep lasting the drainage to drainage pressure according to patient's wound condition, the misery that has reduced patient's drainage and the operating pressure who has reduced and has added medical staff follow, easy operation, convenient to use.

A sliding rod 20 is fixedly installed between the fixed plate 15 and the left side plate of the negative pressure suction box 5, a sliding sleeve 21 is slidably installed on the sliding rod 20, the sliding sleeve 21 is fixedly connected with a first movable block 23, a telescopic rod 22 is fixedly installed on the right side of the fixed plate 15, and the end part of a movable shaft of the telescopic rod 22 is fixedly connected with the left side surface of the piston 17; through the arrangement of the sliding rod 20 and the sliding sleeve 21, the sliding sleeve 21 is driven to slide on the sliding rod 20 by the first movable block 23, and the first movable block 23 is limited by the sliding rod 20 and the sliding sleeve 21, so that the first movable block 23 cannot deflect and can stably move left and right under the drive of the threaded rod 16; by arranging the telescopic rod 22, the piston 17 can be supported, and stability is kept when the piston 17 moves left and right.

The replacing assembly comprises a U-shaped plate 24, a two-way screw rod 25, two movable blocks II 26, two connecting rods 27 and a placing seat 28, the U-shaped plate 24 is fixedly arranged below the supporting plate 4, two ends of the two-way screw rod 25 are respectively and rotatably connected with two side plates of the U-shaped plate 24 through rotating shafts 29, the outer end of the rotating shaft 29 positioned on one side of the two-way screw rod 25 is fixedly connected with a crank, and the two movable blocks II 26 are respectively in threaded connection with two sections of threads of the two-way screw rod 25;

one end of each of the two connecting rods 27 is correspondingly hinged with the two movable blocks 26, the other end of each of the two connecting rods 27 is hinged with the lower surface of the placing seat 28, the bottom of the drainage liquid collecting bottle 12 is placed in the groove above the placing seat 28, and the top of the drainage liquid collecting bottle 12 passes through the channel 30 formed in the supporting plate 4 and then extends to the position above the supporting plate 4 to be communicated with the drainage tube 9; through being provided with two-way screw rod 25, adjust two-way screw rod 25 and drive two movable block 26 and be close to each other or keep away from, cooperate two movable block 26, connecting rod 27 and place the articulated effect between the seat 28, under the support limiting displacement of guided way 32 and guide block 33, drive drainage collecting bottle 12 of placing on the seat 28 and rise or descend to the convenience is taken and is changed drainage collecting bottle 12.

The connecting assembly comprises an internal thread block 31, the liquid outlet pipe 13 of the drainage cylinder 9 and the liquid inlet pipe 14 of the drainage liquid collecting bottle 12 have the same radius, the outer surfaces of the liquid outlet pipe 13 and the liquid inlet pipe 14 are provided with threads, and the internal thread block 31 is in threaded connection between the liquid outlet pipe 13 and the liquid inlet pipe 14; through being provided with internal thread piece 31 for can conveniently install or dismantle drainage collection liquid bottle 12 on drainage tube 9, and sealed effectual.

Guide rails 32 are fixedly arranged on the inner sides of two side plates of the U-shaped plate 24, guide blocks 33 are slidably arranged in the guide rails 32, and two sides of the placing seat 28 are fixedly connected with the two guide blocks 33 respectively; by providing the guide rail 32 and the guide block 33, the placing seat 28 drives the guide block 33 to slide up and down in the guide rail 32, and the placing seat 28 is supported and limited by the guide block 33 and the guide rail 32, so that the placing seat 28 stably moves up or down.

The limiting unit comprises two second sliding blocks 34, a second sliding groove 35 is formed in the supporting plate 4, the two second sliding blocks 34 are correspondingly and slidably mounted in the two second sliding grooves 35, two clamping plates 36 are correspondingly and fixedly connected with the upper parts of the two second sliding blocks 34, the opposite sides of the two clamping plates 36 are respectively and fixedly connected with a baffle 37, and the opposite side surfaces of the two baffle 37 are respectively provided with an arc-shaped clamping opening; utilize two 34 of sliders to slide in two 35 of spout, can accomodate the arrangement spacing to drainage tube 10 that is located between two baffles 37, avoid drainage tube 10 and other equipment winding mutually, and then reduce medical personnel's the degree of difficulty to drainage device clearance.

A spring 38 is arranged between the side of the second sliding block 34 and the side wall of the second sliding groove 35; through being provided with spring 38, utilize the elasticity of spring 38 to make two sliders 34 close to each other to make two baffles 37 close to each other the laminating promotion to the stable effect of accomodating of drainage tube 10.

When the drainage device is used, the drainage device is pushed to the side of a patient bed where a patient is located, one end of the drainage tube 10 is connected with the drainage needle 11, the baffle 37 is pulled to enable a gap to be generated between the two clamping plates 36, the drainage tube 10 is placed between the two clamping plates 36, the two clamping plates 36 are mutually close to each other by utilizing the elasticity of the spring 38 to achieve the storage, arrangement and limiting of the drainage tube 10, the drainage needle 11 is placed at a wound of the patient, the servo motor 18 is started and the rotating speed of the servo motor 18 is adjusted according to the wound condition of the patient, the moving speed of the movable block I23 on the threaded rod 16 in the left direction or the right direction is adjusted, the speed of the piston 17 sliding in the negative pressure suction box 5 is controllable, liquid of the wound of the patient is guided into the drainage tube 9 through the drainage needle 11 and the drainage tube 10 by utilizing the pressure generated by the piston 17 and then flows into the drainage liquid collecting bottle 12 to be collected, controllable regulation drainage is realized for liquid of a wound of a patient according to the rotating speed of the servo motor 18, when the drainage liquid collecting bottle 12 is fully collected, the throttle valve on the liquid outlet pipe 13 is closed, the internal thread block 31 is rotated upwards, the internal thread block 31 is completely separated from the liquid inlet pipe 14, the connection between the drainage tube 9 and the drainage liquid collecting bottle 12 is released, then the crank is rotated to enable the two-way screw 25 to drive the two movable blocks two 26 to be away from each other, the two-way screw 25 is driven to descend to a certain height under the supporting and limiting effect of the guide rail 32 and the guide block 33 by matching with the hinging effect between the movable blocks two 26, the connecting rod 27 and the placing seat 28, the drainage liquid collecting bottle 12 on the placing seat 28 is driven to be away and replaced by a new drainage liquid collecting bottle 12, then the crank is rotated reversely to enable the two-way screw 25 to drive the two movable blocks two 26 to be close to each other, so that the drainage liquid collecting bottle 12 on the placing seat 28 ascends to the lower part of the drainage tube 9, the internal thread block 31 is screwed downwards so that the drainage tube 9 and the drainage liquid collecting bottle 12 are communicated with each other, and the drainage liquid collecting bottle 12 is replaced.

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