Negative pressure drainage bottle with adjustable negative pressure

Abstract

The present invention relates to the technical field of medical devices, and in particular to a negative pressure drainage bottle with adjustable negative pressure, comprising a bottle body, a bottle cap and a negative pressure regulating device; the bottle cap comprises a cap body, a cap edge located around the cap body and a connecting cover arranged through the cap body; the negative pressure regulating device comprises an regulating cover, a sealing member, a pressure regulating mechanism and a pressure compensating mechanism, the regulating cover comprises an upper cover body, a lower cover body and a partition plate used to separate the two, a through hole 1 is arranged on the partition plate, a side wall of the upper cover body is provided with a liquid suction tube connected to the outside, and a through hole 2 is arranged at the bottom of the lower cover body; the regulating cover is connected to the connecting cover through the upper cover body, the sealing member is arranged in the upper cover body, the bottom contacts the partition plate and is used to seal the through hole 1, the pressure compensating mechanism is arranged in the lower cover body, passes through the through hole 1 and contacts the sealing member, the pressure regulating mechanism is arranged in the connecting cover, the bottom contacts the sealing member, and the top passes through the connecting cover to form a regulating part that is easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a negative pressure drainage bottle with adjustable negative pressure. Background Art

[0002] Negative pressure drainage device is a conventional medical device suitable for continuous drainage of wound secretions during or after surgery. Existing negative pressure drainage devices have the following shortcomings: (1) The common squeezable and deformable negative pressure drainage bottle on the market controls the pressure value in the bottle by manually squeezing the drainage bottle to expel the gas in the bottle, but the negative pressure generated by this method is difficult to accurately control. Too much negative pressure can easily cause the drainage speed to be too fast and damage the body organs, while too little negative pressure can easily cause excessive fluid accumulation; (2) Some more sophisticated negative pressure drainage devices require the use of a negative pressure suction device to generate negative pressure, which can more accurately control the negative pressure in the device. However, since supporting facilities are required to adjust the negative pressure, not only is the use process cumbersome, but it also takes up a large space, is not convenient to move back and forth, and brings difficulties to the treatment process.

[0003] Therefore, it is necessary to design a portable negative pressure drainage device that can easily and accurately regulate negative pressure. Summary of the invention

[0004] In order to solve the problem that the existing portable drainage bottles cannot accurately set the required negative pressure value and cannot always absorb liquid with a constant negative pressure, while the negative pressure drainage devices that can accurately control the negative pressure are limited in use, the present invention provides a negative pressure drainage bottle with adjustable negative pressure, which achieves controllable adjustment of the drainage negative pressure through the cooperation between the pressure regulating mechanism, the sealing member and the pressure compensation mechanism, thereby effectively solving the above problems.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A negative pressure drainage bottle with adjustable negative pressure, comprising

[0007] Bottle body;

[0008] A bottle cap sealed with the bottle body, the bottle cap comprising a cap body, a cap edge located around the cap body, and a connection cover disposed through the cap body; and

[0009] A negative pressure regulating device, the negative pressure regulating device comprising a regulating cover, a sealing member, a pressure regulating mechanism and a pressure compensating mechanism, the regulating cover comprising an upper cover body, a lower cover body and a partition for separating the upper cover body and the lower cover body, the partition is provided with a through hole 1 for connecting the upper cover body and the lower cover body, a side wall of the upper cover body is provided with a liquid suction tube for communicating with the outside, and a through hole 2 is provided at the bottom of the lower cover body;

[0010] The regulating cover is connected to the part of the connecting cover located below the cover body through the upper cover body, the sealing member is arranged in the upper cover body, the bottom of which contacts the partition plate and is used to seal the through hole 1, the pressure compensation mechanism is arranged in the lower cover body, passes through the through hole 1 and contacts the sealing member, the pressure regulating mechanism is arranged in the connecting cover, the bottom of which contacts the sealing member, and the top of which passes through the connecting cover, so as to form an adjusting part that is easy to operate;

[0011] During the drainage process, the pressure regulating mechanism is moved upward by a specified distance through the regulating part, so that the pressure compensation mechanism pushes the sealing member upward, opens the through hole 1, and the liquid is sucked into the drainage bottle through the suction tube.

[0012] Preferably, the pressure regulating mechanism comprises an adjusting cap, an adjusting screw, a T-shaped adjusting screw sleeve and a pressure regulating spring, wherein the T-shaped adjusting screw sleeve comprises a horizontal portion and a vertical portion which are perpendicular to each other, the pressure regulating spring sleeve is arranged on the vertical portion, the top portion contacts the horizontal portion, and the bottom portion contacts the sealing member, the bottom portion of the adjusting screw is inserted into the T-shaped adjusting screw sleeve and is threadedly connected to the T-shaped adjusting screw sleeve, the top portion of the adjusting screw passes through a connecting cover to form an adjusting portion which is easy to operate, and the adjusting portion is fixedly connected to the adjusting cap.

[0013] Preferably, the pressure compensation mechanism comprises an ejector and a pressure compensation spring, wherein the pressure compensation spring is arranged in the lower cover body, and the top thereof contacts the ejector, and the top of the ejector passes through a through hole 1 and contacts the sealing member.

[0014] Preferably, the ejector member comprises a base 1 and a push rod disposed on the base 1, wherein the base 1 is a hollow structure, so that the liquid can flow into the through hole 1 and then enter the drainage bottle through the hollow structure, the top of the pressure compensation spring contacts the base 1, and the push rod passes through the through hole 1 and contacts the seal.

[0015] Preferably, the sealing member is a rubber piston, the top of which is slidably sealedly connected to the inner wall of the connecting cover, and the bottom contacts the partition plate for sealing the through hole 1; the pressure regulating mechanism also includes a gasket, which is arranged between the sealing member and the T-type adjusting screw sleeve to prevent the rubber piston from deforming.

[0016] Preferably, a circle of negative pressure adjustment indicating scales is provided on the top of the cover body, and an outwardly protruding indicating portion is provided on the bottom edge of the adjusting cap for cooperating with the negative pressure adjustment indicating scales.

[0017] Preferably, the above-mentioned negative pressure drainage bottle with adjustable negative pressure also includes a negative pressure indicating device inside the bottle, and the negative pressure indicating device inside the bottle includes an indicating cover, a scale and an indicating spring. The bottom of the indicating cover is provided with a through hole three for communicating with the inside of the drainage bottle, and the top is fixed on the lower surface of the cover body. The scale includes a base two and a scale rod arranged on the base two, and a negative pressure indicating scale is provided on the scale rod. The scale is arranged in the indicating cover so that the top of the scale rod passes through the cover body. The indicating spring is arranged between the base two and the bottom of the indicating cover, and is used to drive the scale to rise or fall according to the change of negative pressure in the drainage bottle.

[0018] Preferably, the negative pressure regulating device further comprises an L-shaped connecting tube, which comprises a long portion and a short portion which are perpendicular to each other. After the short portion passes through the cover body, it is connected to the suction tube through a rubber tube, and the long portion is located on the upper surface of the cover body for connecting with the outside world.

[0019] Preferably, a connecting buckle is provided on the cover edge for tying a rope.

[0020] Preferably, the bottom of the lower cover body of the above-mentioned adjustment cover is composed of a bottom cover buckled on the lower cover body, and the second through hole is arranged on the bottom cover.

[0021] The beneficial effects of the present invention are as follows: (1) The negative pressure drainage bottle with adjustable negative pressure of the present invention realizes controllable regulation of drainage negative pressure through the cooperation between the pressure regulating mechanism, the sealing member and the pressure compensation mechanism, starts negative pressure drainage through the pressure regulating mechanism, and always maintains the drainage bottle to drain at the set negative pressure through the balance relationship between the pressure regulating mechanism and the pressure compensation mechanism, thereby avoiding excessive negative pressure causing excessive drainage speed and damage to body organs, or too little negative pressure causing excessive fluid accumulation;

[0022] (2) The negative pressure drainage bottle of the present invention can be customized with different volumes according to different needs. No additional negative pressure drainage device is required during use, and it is easy to carry;

[0023] (3) The present invention provides a circle of negative pressure adjustment indicator scales on the top of the cover body 21, and provides an indicator portion on the adjustment cap. The indicator portion can be pointed to the required negative pressure scale value by rotating the adjustment cap, so that the required negative pressure can be sucked, which is convenient for operation;

[0024] (4) The present invention is also provided with a negative pressure indicating device, and the scale will rise or fall as the negative pressure in the drainage bottle changes, so that the negative pressure value in the drainage bottle can be read through the scale, and the change of the negative pressure in the drainage bottle can be understood at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a three-dimensional diagram of the negative pressure drainage bottle of the present invention;

[0027] Figure 2 It is a front view of the negative pressure drainage bottle of the present invention;

[0028] Figure 3 is along Figure 2 Sectional view along line AA;

[0029] Figure 4 It is a schematic structural diagram of the bottle cap of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the adjustment cover of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the ejector of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the scale meter of the present invention;

[0033] In the figure: 1. Bottle body; 21. Cover body; 211. Negative pressure adjustment indicator scale; 22. Cover edge; 221. Connecting buckle; 23. Connecting cover; 31. Adjusting cover; 311. Upper cover body; 312. Lower cover body; 313. Partition plate; 314. Through hole 1; 315. Liquid pipette; 316. Through hole 2; 317. Bottom cover; 32. Seal; 33. Pressure regulating mechanism; 331. Adjusting cap; 3311. Indicator; 332. Adjusting screw; 333. T-type adjusting screw sleeve; 334. Pressure regulating spring; 335. Gasket; 34. Pressure compensation mechanism; 341. Ejector; 3411. Base 1; 3412. Ejector rod; 342. Pressure compensation spring; 35. L-type connecting pipe; 351. Long part; 352. Short part; 41. Indicator cover; 42. Scale meter; 421. Base II; 422. Scale rod; 423. Negative pressure indicating scale; 43. Indicator spring; 44. Through hole III. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0035] A negative pressure drainage bottle with adjustable negative pressure, such as Figure 1-5As shown, it includes a bottle body 1, a bottle cap sealed and connected with the bottle body 1, and a negative pressure regulating device; the bottle cap includes a cover body 21, a cover edge 22 located around the cover body 21, and a connecting cover 23 arranged through the cover body 21; the negative pressure regulating device includes an adjusting cover 31, a sealing member 32, a pressure regulating mechanism 33, and a pressure compensation mechanism 34; the adjusting cover 31 includes an upper cover body 311, a lower cover body 312, and a partition 313 for separating the upper cover body 311 and the lower cover body 312; the partition 313 is provided with a through hole 1 314 for connecting the upper cover body 311 and the lower cover body 312; the side wall of the upper cover body 311 is provided with a liquid pipette 315 for communicating with the outside world; the bottom of the lower cover body 312 is provided with a through hole 2 316; the regulating The cover 31 is connected to the part of the connecting cover 23 located below the cover body 21 through the upper cover body 311. The seal 32 is arranged in the upper cover body 311, and the bottom contacts the partition 313 for sealing the through hole 314. The pressure compensation mechanism 34 is arranged in the lower cover body 312, passes through the through hole 314 and contacts the seal 32. The pressure regulating mechanism 33 is arranged in the connecting cover 23, contacts the seal 32 at the bottom, and passes through the connecting cover 23 at the top, forming an adjustment part 330 that is easy to operate. During the drainage process, the pressure regulating mechanism 33 is moved up a specified distance through the adjustment part 330, so that the pressure compensation mechanism 34 pushes the seal 32 to move up, opens the through hole 314, and the liquid is sucked into the drainage bottle through the suction tube 315.

[0036] In a specific embodiment, the bottle body 1 and the bottle cap can be connected by hot melting to achieve a sealing effect, and the adjustment cover 31 can be threadedly connected with the portion of the connection cover 23 located below the cover body 21 through the upper cover body 311.

[0037] In a specific embodiment, Figure 3 As shown, the pressure regulating mechanism 33 includes an adjusting cap 331, an adjusting screw 332, a T-shaped adjusting screw sleeve 333 and a pressure regulating spring 334. The T-shaped adjusting screw sleeve 333 includes a horizontal portion and a vertical portion perpendicular to each other. The pressure regulating spring 334 is sleeved on the vertical portion, the top of which contacts the horizontal portion, and the bottom of which contacts the sealing member 32. The bottom of the adjusting screw 332 is inserted into the T-shaped adjusting screw sleeve 333 and is threadedly connected to the T-shaped adjusting screw sleeve 333. The top of the adjusting screw 332 passes through the connecting cover 23 to form an adjusting portion 330 that is easy to operate. The adjusting portion 330 is fixedly connected to the adjusting cap 331.

[0038] In a specific embodiment, Figure 3 As shown, the pressure compensation mechanism 34 includes a ejector 341 and a pressure compensation spring 342 . The pressure compensation spring 342 is disposed in the lower cover 312 , and the top thereof contacts the ejector 341 . The top of the ejector 341 passes through a through hole 314 and contacts the sealing member 32 .

[0039] Assume that the pressure value inside the connecting cover 23 is P0 (i.e., atmospheric pressure), the pressure value inside the upper cover body 311 is P1 (i.e., the pressure of the liquid suction pipe 315), the pressure inside the lower cover body 312 is P2 (i.e., the pressure inside the drainage bottle), the elastic force value of the pressure regulating spring 334 is f1, and the elastic force value of the pressure compensation spring 342 is f2. In the initial state, P0 = P1, P2 is negative pressure, f1 = f2, and the whole system is in a balanced state. Rotate the adjusting cap 331 clockwise, so that the adjusting screw 332 drives the T-shaped adjusting sleeve 333 to move upward. At this time, the pressure regulating spring 334 elongates, f1 decreases, f2 > f1, the pressure compensation spring 342 elongates, driving the ejector member 341 to move upward, lifting the seal member 32, the seal member 32 opens, a negative pressure is generated inside the upper cover body 311, the liquid suction pipe 315 starts to suck liquid, and the sucked liquid flows into the upper cover body 311 through the liquid suction pipe 315 and flows into the bottle body 1 through the through hole one 314 and the through hole two 316.

[0040] Since the upper cover body 311 is in a negative pressure state, that is, P1 < P0, the seal member 32 will descend to block the through hole one 314. At this time, the piston closes and the liquid suction stops. After the seal member 32 closes, due to f2 > f1, the pressure compensation spring 342 elongates, driving the ejector member 341 to move upward, lifting the seal member 32, the seal member 32 opens again, a negative pressure is generated inside the upper cover body 311, and the liquid suction starts. This process circulates continuously until the liquid suction ends. The above process can ensure that the drainage bottle sucks liquid under a set constant pressure.

[0041] In a specific embodiment, as Figure 6 shown, the ejector member 341 includes a base one 3411 and a ejector rod 3412 arranged on the base one 3411. The base one 3411 is a hollow structure, which is convenient for the liquid to flow into the through hole one 314 and then enter the drainage bottle through the hollow structure. The top of the pressure compensation spring 342 contacts the base one 3411, and the ejector rod 3412 passes through the through hole one 314 and contacts the seal member 32. In the initial state, the ejector rod 3412 contacts the seal member 32, and there is a certain distance between the base one 3411 and the partition plate 313.

[0042] In a specific embodiment, as Figure 3 shown, the seal member 32 is a rubber piston. The top of the rubber piston is slidably and sealingly connected to the inner wall of the connecting cover 23, and the bottom contacts the partition plate 313 for sealing the through hole one 314; the pressure regulating mechanism 33 further includes a gasket 335, and the gasket 335 is arranged between the seal member 32 and the T-shaped adjusting sleeve 333 to prevent the rubber piston from deforming.

[0043] In a specific embodiment, as Figure 3As shown, the rubber piston (seal 32) is a T-shaped structure. The T-shaped rubber piston is slidably sealed and connected to the inner wall of the connecting cover 23 through the upper horizontal part, and blocks the through hole 1 314 through the lower vertical part, so that there is a larger space in the upper cover body 311.

[0044] In a specific embodiment, Figure 1 As shown, a circle of negative pressure adjustment indicator scale 211 is provided on the top of the cover body 21, and an outwardly protruding indicator portion 3311 is provided on the bottom edge of the adjustment cap 331, which is used to cooperate with the negative pressure adjustment indicator scale 211. The adjustment cap 331 is rotated to make the indicator portion 3311 specify the required scale value (i.e. the required negative pressure value), so that the negative pressure can be set according to the required negative pressure value, thereby avoiding excessive negative pressure causing excessive drainage speed and damage to body organs, or too little negative pressure causing excessive fluid accumulation.

[0045] In a specific embodiment, Figure 3 and Figure 7 As shown, the negative pressure drainage bottle with adjustable negative pressure also includes a negative pressure indicating device in the bottle, which includes an indicating cover 41, a scale 42 and an indicating spring 43. The bottom of the indicating cover 41 is provided with a through hole 3 44 for communicating with the inside of the drainage bottle, and the top is fixed on the lower surface of the cover 21. The scale 42 includes a base 2 421 and a scale rod 422 arranged on the base 2 421. The scale rod 422 is provided with a negative pressure indicating scale 423. The scale 42 is arranged in the indicating cover 41 so that the top of the scale rod 422 passes through the cover 21. The indicating spring 43 is arranged between the base 2 421 and the bottom of the indicating cover 41, and is used to drive the scale 42 to rise or fall according to the change of the negative pressure in the drainage bottle. The negative pressure change in the drainage bottle can be known at any time through the scale 41.

[0046] In a specific embodiment, Figure 1 and Figure 4 As shown, the negative pressure regulating device also includes an L-shaped connecting tube 35, which includes a long portion 351 and a short portion 352 that are perpendicular to each other. After the short portion 352 passes through the cover body 21, it is connected to the suction tube 315 through a rubber tube. The long portion 351 is located on the upper surface of the cover body 21 and is used to communicate with the outside world.

[0047] In a specific embodiment, Figure 1 As shown, a connecting buckle 221 is provided on the cover edge 22 for tying a rope. A lanyard can be tied to the connecting buckle 221, and when there are many items in hand, the lanyard can be directly lifted.

[0048] In a specific embodiment, Figure 3As shown, the bottom of the lower cover body 312 of the adjustment cover 31 is composed of a bottom cover 317 buckled on the lower cover body 312, and the second through hole 316 is provided on the bottom cover 317. The bottom cover 317 is provided to facilitate the assembly of the ejector 341 and the pressure compensation spring 342 in the lower cover body 312. In addition, a bottom cover similar to the bottom cover 317 can also be provided on the indicator cover 41 to facilitate assembly.

[0049] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A negative pressure drainage bottle with adjustable negative pressure, characterized in that: include Bottle body (1); A bottle cap sealedly connected to a bottle body (1), the bottle cap comprising a cap body (21), a cap edge (22) located around the cap body (21), and a connection cover (23) disposed through the cap body (21); and A negative pressure regulating device, the negative pressure regulating device comprising a regulating cover (31), a sealing member (32), a pressure regulating mechanism (33) and a pressure compensating mechanism (34); the regulating cover (31) comprising an upper cover body (311), a lower cover body (312) and a partition (313) for separating the upper cover body (311) and the lower cover body (312); the partition (313) is provided with a first through hole (314) for connecting the upper cover body (311) and the lower cover body (312); a side wall of the upper cover body (311) is provided with a liquid suction tube (315) for communicating with the outside; and a second through hole (316) is provided at the bottom of the lower cover body (312); The regulating cover (31) is connected to the portion of the connecting cover (23) located below the cover body (21) through the upper cover body (311); the sealing member (32) is arranged in the upper cover body (311), with the bottom thereof contacting the partition (313) and used to seal the through hole 1 (314); the pressure compensation mechanism (34) is arranged in the lower cover body (312), passing through the through hole 1 (314) and contacting the sealing member (32); the pressure regulating mechanism (33) is arranged in the connecting cover (23), with the bottom thereof contacting the sealing member (32) and the top thereof passing through the connecting cover (23), thereby forming an adjusting portion (330) that is easy to operate; During the drainage process, the pressure regulating mechanism (33) is moved upward by a specified distance through the regulating portion (330), so that the pressure compensation mechanism (34) pushes the sealing member (32) upward, thereby opening the first through hole (314), and the liquid is sucked into the drainage bottle through the liquid suction tube (315); The pressure regulating mechanism (33) comprises an adjusting cap (331), an adjusting screw (332), a T-shaped adjusting screw sleeve (333) and a pressure regulating spring (334); the T-shaped adjusting screw sleeve (333) comprises a horizontal portion and a vertical portion perpendicular to each other; the pressure regulating spring (334) is sleeved on the vertical portion, with the top portion in contact with the horizontal portion and the bottom portion in contact with the sealing member (32); the bottom portion of the adjusting screw (332) is inserted into the T-shaped adjusting screw sleeve (333) and is threadedly connected to the T-shaped adjusting screw sleeve (333); the top portion of the adjusting screw (332) passes through a connecting cover (23) to form an adjusting portion (330) that is easy to operate; and the adjusting portion (330) is fixedly connected to the adjusting cap (331); The pressure compensation mechanism (34) comprises an ejector (341) and a pressure compensation spring (342); the pressure compensation spring (342) is arranged in the lower cover (312) and has its top in contact with the ejector (341); and the top of the ejector (341) passes through through hole 1 (314) and is in contact with the sealing member (32).

2. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: The ejector (341) comprises a base one (3411) and a push rod (3412) disposed on the base one (3411); the base one (3411) is a hollow structure, which facilitates liquid to flow into the through hole one (314) and then enter the drainage bottle through the hollow structure; the top of the pressure compensation spring (342) contacts the base one (3411), and the push rod (3412) passes through the through hole one (314) and contacts the sealing member (32).

3. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: The sealing member (32) is a rubber piston, the top of which is slidably sealed to the inner wall of the connection cover (23), and the bottom of which contacts the partition plate (313) for sealing the first through hole (314); the pressure regulating mechanism (33) further comprises a gasket (335), which is arranged between the sealing member (32) and the T-shaped adjusting screw sleeve (333) for preventing the rubber piston from deforming.

4. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: A circle of negative pressure adjustment indicating scales (211) is provided on the top of the cover body (21), and an outwardly protruding indicating portion (3311) is provided on the bottom edge of the adjusting cap (331) for cooperating with the negative pressure adjustment indicating scale (211).

5. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: The invention also comprises a negative pressure indicating device in the bottle, the negative pressure indicating device in the bottle comprising an indicating cover (41), a scale (42) and an indicating spring (43); the bottom of the indicating cover (41) is provided with a through hole three (44) for communicating with the interior of the drainage bottle, and the top is fixed on the lower surface of the cover body (21); the scale (42) comprises a base two (421) and a scale rod (422) arranged on the base two (421); the scale rod (422) is provided with a negative pressure indicating scale (423); the scale (42) is arranged in the indicating cover (41) so that the top of the scale rod (422) passes through the cover body (21); the indicating spring (43) is arranged between the base two (421) and the bottom of the indicating cover (41) and is used to drive the scale (42) to rise or fall according to the change of the negative pressure in the drainage bottle.

6. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: The negative pressure regulating device further comprises an L-shaped connecting tube (35), wherein the L-shaped connecting tube (35) comprises a long portion (351) and a short portion (352) which are perpendicular to each other, wherein the short portion (352) passes through the cover body (21) and is connected to the liquid suction tube (315) via a rubber tube, and the long portion (351) is located on the upper surface of the cover body (21) and is used for connecting to the outside.

7. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: The cover edge (22) is provided with a connecting buckle (221) for tying a rope.

8. The negative pressure drainage bottle with adjustable negative pressure as claimed in claim 1, characterized in that: The bottom of the lower cover body (312) of the adjustment cover (31) is composed of a bottom cover (317) buckled on the lower cover body (312), and the second through hole (316) is arranged on the bottom cover (317).

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