CN217697409U - Continuous negative pressure suction device with suck-back prevention function - Google Patents
Continuous negative pressure suction device with suck-back prevention function Download PDFInfo
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- CN217697409U CN217697409U CN202220094548.7U CN202220094548U CN217697409U CN 217697409 U CN217697409 U CN 217697409U CN 202220094548 U CN202220094548 U CN 202220094548U CN 217697409 U CN217697409 U CN 217697409U
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Abstract
The utility model discloses a but continuous negative pressure suction device with prevent suck-back function relates to medical instrument technical field. The utility model comprises a main tank, a spare tank, a group of connecting hoses, a floating piston, a switch valve, a liquid inlet pipeline shell and a liquid outlet pipeline shell; a vertical upright rod is fixed at the bottom of the main tank body, the upright rod is tightly connected with the floating piston, and a one-way rubber sealing cover is arranged at the top of the tank cover; the connecting hose is a group of rubber hoses and connects the two tank bodies and the suction end; the center of the floating piston penetrates through the fixed upright post and can slide up and down on the fixed upright post; the switch valve plate is arranged in the liquid outlet pipeline shell and used for opening and closing the negative pressure bypass; the shell of the liquid inlet pipeline is connected with the liquid inlet and is a hard three-way pipe; the shell of the liquid outlet pipeline is a hard three-way pipe, and a whistle is arranged inside the liquid outlet pipeline and is connected to the negative pressure pipeline. The utility model discloses have and prevent suck-back function and can incessant completion negative pressure suction work.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially a but continuous negative pressure suction device with prevent suck-back function.
Background
Negative pressure suction is a common technique in surgery and is used for sucking away blood, water and other liquids generated in surgery. These liquid pass through central negative pressure or negative pressure aspirator and inhale a storage jar in, when the storage jar will be full, medical personnel need in time empty the storage jar, otherwise the liquid can be inhaled in central negative pressure pipeline or negative pressure aspirator, cause pipeline feed liquor or equipment to damage, influence the operation and go on, also can cause economic loss.
In the existing patents, for example, patent publication No. CN214969654U "a medical negative pressure suction back-suction prevention device", although the back-suction prevention function can be achieved, a way of blocking a negative pressure pipeline is mostly adopted, after the blockage, the whole negative pressure loop does not generate negative pressure any more, the whole device stops working, and the negative pressure suction work cannot be completed uninterruptedly.
Disclosure of Invention
The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a continuous negative pressure suction device with a suck-back prevention function, a negative pressure port is blocked by a floating piston, liquid is prevented from entering a central negative pressure pipeline, a negative pressure bypass is formed at the same time, and the liquid can enter a standby tank through the negative pressure bypass; after the bypass is opened, the negative pressure gas can send out warning sound through the whistle inside the bypass, and the medical personnel is reminded to clear up the storage jar. The utility model discloses have and prevent suck-back function and can incessant completion negative pressure suction work.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
according to the utility model, the continuous negative pressure suction device with the suck-back prevention function comprises a main tank, a standby tank, a floating piston, a switch valve, a liquid inlet pipeline shell and a liquid outlet pipeline shell; wherein, the first and the second end of the pipe are connected with each other,
a liquid inlet pipeline, a liquid outlet pipeline and a sealing cover are arranged on the tank cover of the main tank, and a sealing sheet is arranged on the cover top of the sealing cover;
a vertical upright rod is fixed at the bottom of the main tank, the top of the upright rod extends into the liquid outlet pipeline, the upright rod passes through the center of the floating piston, the floating piston can slide up and down on the upright rod, and a connecting rod is arranged on the side edge of the floating piston;
a liquid inlet pipeline and a liquid outlet pipeline are arranged on the tank cover of the standby tank;
the shell of the liquid inlet pipeline is a three-way pipe, the shell of the liquid inlet pipeline is provided with three ports, a first port of the shell of the liquid inlet pipeline is connected with an external liquid inlet port of a patient, a second port of the shell of the liquid inlet pipeline is connected with a liquid inlet pipeline of the main tank, and a third port of the shell of the liquid inlet pipeline is connected with a liquid inlet pipeline of the standby tank;
the liquid outlet pipeline shell is provided with three ports, a first port of the liquid outlet pipeline shell is connected with an external central negative pressure port, a second port of the liquid outlet pipeline shell is connected with a liquid outlet pipeline of the main tank, and a third port of the liquid outlet pipeline shell is connected with a liquid outlet pipeline of the standby tank;
the switch valve is arranged between the first port and the third port of the liquid outlet pipeline shell and positioned on the sealing cover, and when the connecting rod does not jack up the sealing sheet, the first port and the third port of the liquid outlet pipeline shell are not communicated; when the connecting rod jack-up gasket, thereby the gasket is by jack-up switch valve, switches on between the first port that makes to obtain the liquid pipeline shell and the third port, and the gasket can not broken by the top.
As a further optimization scheme of the continuous negative pressure suction device with the suck-back prevention function, a first port of the liquid inlet pipeline shell is connected with an external liquid inlet port of a patient through a connecting hose, a second port of the liquid inlet pipeline shell is connected with a liquid inlet pipeline of the main tank through a connecting hose, and a third port of the liquid inlet pipeline shell is connected with a liquid inlet pipeline of the standby tank through a connecting hose; the first port of the liquid outlet pipeline shell is connected with the external central negative pressure port through a connecting hose, and the third port of the liquid outlet pipeline shell is connected with the liquid outlet pipeline of the standby tank through a connecting hose.
As a but continuous vacuum aspiration device further optimizes the scheme with prevent suck-back function, coupling hose is the liquid-tight pipeline of rubber system.
As a but continuous vacuum aspiration device further optimizes the scheme with prevent suck-back function, the gasket is the diaphragm.
As a but continuous vacuum suction device further optimization scheme with prevent suck-back function, floating piston is the rubber system structure.
As a but continuous vacuum aspiration device further optimization scheme with prevent suck-back function, the cross section of pole setting is heterotypic, the pole setting passes floating piston center assorted heterotypic hole and floating piston in close contact with.
As a but continuous negative pressure suction device further optimization scheme with prevent suck-back function, the inside between first port and the third port of liquid outlet pipe way shell is equipped with the whistle.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
(1) The utility model has the advantages that the floating piston is arranged in the tank body, so that the floating piston is always above the liquid level, when liquid reaches the top of the tank body, the floating piston accurately pushes the liquid outlet pipeline inside the tank cover due to the limit of the vertical upright rod, and the central negative pressure pipeline is blocked, thereby avoiding the central negative pressure liquid inlet;
(2) After the main tank is full, the floating piston blocks the negative pressure main path, simultaneously, the rubber diaphragm on the main tank cover is pushed open through the connecting rod on the floating piston, the switch valve block is pushed to move upwards, the switch valve is opened, the negative pressure bypass is opened, liquid enters the standby tank through the negative pressure bypass, and the whole system can still work normally after the main tank is full;
(3) The utility model discloses a whistle of setting in the negative pressure bypass sends the warning sound after the negative pressure bypass launches, and suggestion medical personnel in time clear up the storage jar, further guarantee system continuation work.
Drawings
FIG. 1 is an overall connection diagram;
FIG. 2 is a connection hose;
FIG. 3 is a cross-sectional view of the main tank;
FIG. 4 is a detail view of a can lid
FIG. 5 is a floating piston;
FIG. 6a is a cross-sectional view of the main tank with the floating piston attached before it is full;
FIG. 6b is a cross-sectional view of the main tank after it is full, with the floating piston attached;
FIG. 7 is a housing of the inlet line;
FIG. 8a is a fluid outlet line housing;
fig. 8b is a cross-sectional view of the outlet conduit housing.
The reference numerals in the figures are to be interpreted as:
1-main tank, 2-spare tank, 3-connecting hose, 4-liquid inlet pipeline shell, 5-liquid outlet pipeline shell, 3.1-connecting hose for connecting liquid inlet end and liquid inlet pipeline shell, 3.2-connecting hose for connecting liquid inlet pipeline shell and main tank cover, 3.3-connecting hose for connecting liquid inlet pipeline shell and spare tank cover, 3.4-connecting hose for connecting main tank cover and spare tank cover, 3.5-connecting hose for connecting main tank cover and central negative pressure, 1.1-main tank body, 1.2-main tank cover, 1.3-liquid inlet pipe, 1.4-liquid outlet pipe, 1.5-vertical upright rod, 6-floating piston, 6.1-special-shaped hole, 6.2-connecting rod, 1.6-one-way rubber diaphragm, 5.1-main tank cover pipeline connector, 5.2-central negative pressure connector, 5.3-spare tank connector, 5.4-switching valve, 5.5.5-whistle valve plate, 5.6-valve plate.
Detailed Description
The technical scheme of the invention is further explained in detail with the accompanying drawings as follows:
FIG. 1 is an overall connection diagram; FIG. 2 is a connection hose; FIG. 3 is a cross-sectional view of the main tank; figure 4 is a detail view of a can lid. The utility model provides a but continuous negative pressure suction device with prevent suck-back function, include: the device comprises a main tank 1, a standby tank, a group of connecting hoses, a floating piston, a switch valve plate, a liquid inlet pipeline shell and a liquid outlet pipeline shell; FIG. 7 is a housing of the inlet line; FIG. 8a is a fluid outlet line housing; fig. 8b is a cross-sectional view of the outlet conduit housing. FIG. 5 is a floating piston; FIG. 6a is a cross-sectional view of the main tank with the floating piston attached before it is full; figure 6b is a cross-sectional view of the main tank after filling with a floating piston.
A hard vertical upright rod is fixed at the bottom of the main tank body 1.1, the upright rod is a vertical rod with a special-shaped cross section, and penetrates through a matched special-shaped hole in the center of the floating piston to be tightly connected with the floating piston;
two hard connecting pipelines for liquid inlet and liquid outlet are arranged at the top of the main tank cover, and after the main tank cover is mounted on the tank body, a vertical upright rod at the bottom of the main tank body extends into the liquid outlet pipeline; the main tank cover top is provided with a one-way rubber sealing cover which can only be pushed outwards;
the standby tank is a common storage tank, has the same structure as the main tank except that no vertical upright rod is arranged at the bottom, and is connected with the patient end and the central negative pressure port through a connecting hose and a liquid inlet/outlet pipeline shell;
the connecting hose 3 is a set of rubber liquid-tight pipelines, 5 in total, and is respectively connected: a patient suction end and a liquid inlet pipeline shell, a liquid inlet pipeline shell and a main tank, a liquid inlet pipeline shell and a standby tank, a liquid outlet pipeline shell and a central negative pressure suction end;
the floating piston is a low-density rubber structure, the center of the floating piston penetrates through the bottom fixing upright post of the tank and can slide up and down on the fixing upright post, a hard connecting rod extends out of the side edge of the floating piston, and the floating piston can push out a one-way rubber sealing cover on the tank cover when rising to the top of the tank and is tightly connected with the one-way rubber sealing cover;
the switch valve plate is of a hard structure, is arranged in the liquid outlet pipeline shell and is tightly connected with the liquid outlet pipeline shell at the switch valve;
the liquid inlet pipeline shell is connected with a liquid inlet at the patient end, is a hard three-way pipe and is connected with the patient end, the main tank and the standby tank through a connecting hose;
the shell of the liquid outlet pipeline is a hard three-way pipe, the interior of the liquid outlet pipeline is provided with a hard whistle structure, and the liquid outlet pipeline is connected with the central negative pressure port, the main tank and the standby tank through a connecting hose.
When the device is used specifically, the patient end is connected to one end of the liquid inlet pipeline shell 4 through the connecting hose 3.1, one of the other two connectors of the liquid inlet pipeline shell 4 is connected to the hard liquid inlet pipe 1.3 on the top of the main tank cover through the connecting hose 3.2, and the other connector is connected to the top hard liquid inlet pipe opening of the standby tank 2 through the connecting hose 3.3; a main tank cover pipeline connecting port 5.1 of the liquid outlet pipeline shell 5 is connected to a main tank cover hard liquid outlet pipe 1.4, a central negative pressure connecting port 5.2 is connected to central negative pressure through a connecting hose 3.5, and a standby tank connecting port 5.3 is connected to a cover ejection liquid outlet hard pipe orifice of the standby tank 2 through a connecting hose 3.4; sleeving a central special-shaped hole 6.1 of a floating piston 6 on a special-shaped vertical upright rod 1.5 at the bottom of a main tank body, and assembling a main tank and a standby tank cover, wherein a hard liquid outlet pipe orifice 1.4 of an inner 5 of the main tank cover 1.2 is sleeved on the vertical upright rod 1.5; the whole set of device is connected, wherein a patient end, a liquid inlet pipeline shell, a main tank body, a liquid outlet pipeline shell, a central negative pressure is a negative pressure main circuit, and a patient end, a liquid inlet pipeline shell, a standby tank, a liquid outlet pipeline shell, a central negative pressure is a negative pressure bypass.
When the device is used, liquid at the patient end enters the liquid inlet pipeline shell 4 through the connecting hose 3.1, and the liquid moves through the negative pressure main path because the negative pressure bypass is blocked by the switch valve plate 5.6 due to the switch valve 5.4 in the liquid outlet pipeline shell 5 at the moment and no negative pressure is generated. Liquid enters the main tank body through the connecting hoses 3.1 and 3.2, and the floating piston 6 floats upwards on the vertical upright rod 1.5 along with the rise of the liquid level; after the main tank body is filled with liquid, the floating piston 6 blocks the hard pipe orifice 1.4 of the liquid inlet, and the main negative pressure path is closed, so that the liquid is prevented from being sucked into the central negative pressure pipeline; meanwhile, the connecting rod 6.2 jacks up the one-way rubber diaphragm 1.6 on the main tank cover to enter an opening of a switch valve 5.4 of the liquid outlet pipeline shell 5, a switch valve plate 5.6 blocking a negative pressure bypass moves upwards under the action of gravity before jacking, the negative pressure bypass is opened, and liquid at the patient end enters the standby tank 2 through the negative pressure bypass; when the negative pressure bypass generates negative pressure, a whistle 5.5 arranged on the bypass in the liquid outlet pipeline shell 5 is influenced by the airflow to generate sound, and the medical staff is warned to clean the main tank.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. A continuous negative pressure suction device with a suck-back prevention function is characterized by comprising a main tank, a standby tank, a floating piston, a switch valve, a liquid inlet pipeline shell and a liquid outlet pipeline shell; wherein, the first and the second end of the pipe are connected with each other,
a liquid inlet pipeline, a liquid outlet pipeline and a sealing cover are arranged on the tank cover of the main tank, and a sealing sheet is arranged on the cover top of the sealing cover;
a vertical upright rod is fixed at the bottom of the main tank, the top of the upright rod extends into the liquid outlet pipeline, the upright rod passes through the center of the floating piston, the floating piston can slide up and down on the upright rod, and a connecting rod is arranged on the side edge of the floating piston;
a liquid inlet pipeline and a liquid outlet pipeline are arranged on the tank cover of the standby tank;
the shell of the liquid inlet pipeline is a three-way pipe, the shell of the liquid inlet pipeline is provided with three ports, a first port of the shell of the liquid inlet pipeline is connected with an external liquid inlet port of a patient, a second port of the shell of the liquid inlet pipeline is connected with a liquid inlet pipeline of the main tank, and a third port of the shell of the liquid inlet pipeline is connected with a liquid inlet pipeline of the standby tank;
the liquid outlet pipeline shell is provided with three ports, a first port of the liquid outlet pipeline shell is connected with an external central negative pressure port, a second port of the liquid outlet pipeline shell is connected with a liquid outlet pipeline of the main tank, and a third port of the liquid outlet pipeline shell is connected with a liquid outlet pipeline of the standby tank;
the switch valve is arranged between the first port and the third port of the liquid outlet pipeline shell and positioned on the sealing cover, and when the connecting rod does not jack up the sealing sheet, the first port and the third port of the liquid outlet pipeline shell are not conducted; when the connecting rod jacks up the sealing sheet, the sealing sheet is jacked up to jack up the switch valve, so that the first port and the third port of the obtained liquid pipeline shell are communicated, and the sealing sheet cannot be broken;
the first port of the liquid inlet pipeline shell is connected with an external liquid inlet port of a patient through a connecting hose, the second port of the liquid inlet pipeline shell is connected with a liquid inlet pipeline of the main tank through a connecting hose, and the third port of the liquid inlet pipeline shell is connected with a liquid inlet pipeline of the standby tank through a connecting hose; the first port of the liquid outlet pipeline shell is connected with the external central negative pressure port through a connecting hose, and the third port of the liquid outlet pipeline shell is connected with the liquid outlet pipeline of the standby tank through a connecting hose.
2. The continuous negative pressure suction device with the suck-back prevention function according to claim 1, wherein the connection hose is a rubber liquid-tight pipeline.
3. The continuous negative pressure suction device with the suck-back prevention function as claimed in claim 1, wherein the sealing sheet is a membrane.
4. The continuous negative pressure suction device with the suck back prevention function as claimed in claim 1, wherein the floating piston is of a rubber structure.
5. The continuous negative pressure suction device with the suck-back prevention function as claimed in claim 1, wherein the vertical rod has a special-shaped cross section, and the vertical rod passes through a matched special-shaped hole at the center of the floating piston to be in close contact with the floating piston.
6. The continuous negative pressure suction device with the suck-back prevention function as claimed in claim 1, wherein a whistle is provided inside the housing of the liquid outlet pipe between the first port and the third port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220094548.7U CN217697409U (en) | 2022-01-14 | 2022-01-14 | Continuous negative pressure suction device with suck-back prevention function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220094548.7U CN217697409U (en) | 2022-01-14 | 2022-01-14 | Continuous negative pressure suction device with suck-back prevention function |
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| CN217697409U true CN217697409U (en) | 2022-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253874A (en) * | 2022-07-25 | 2022-11-01 | 信阳市人民医院 | Multifunctional gastroenterology gastric lavage instrument |
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2022
- 2022-01-14 CN CN202220094548.7U patent/CN217697409U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253874A (en) * | 2022-07-25 | 2022-11-01 | 信阳市人民医院 | Multifunctional gastroenterology gastric lavage instrument |
| CN115253874B (en) * | 2022-07-25 | 2024-05-14 | 青岛市胶州中心医院 | Multifunctional gastroenterology gastric lavage instrument |
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