CN211096411U - A disposable negative pressure suction device that is easy to exhaust - Google Patents

Abstract

The utility model relates to the field of medical equipment, in particular to a disposable negative pressure suction device that is easy to exhaust, comprising an air bag, a drainage port, an air discharge port, a spring, an air bag cover, a regulating valve, a lifting ear, a soft rubber tube, Drainage pipe and one-way exhaust filter valve; one-way exhaust filter valve includes three-way pipe, waterproof breathable membrane, filter block, one-way valve; three-way pipe includes first channel, second channel and third channel; From the inside to the outside, one channel is fixedly installed with waterproof breathable membrane, filter block and one-way valve in sequence; the second channel is connected with the drainage port, the third channel is connected with the regulating valve, and the regulating valve is connected with the drainage pipe. The easy-to-exhaust disposable negative pressure suction device has the advantages of simple structure, light weight and portability, low cost, and wide application range. While convenient for exhausting, it can effectively prevent liquid from overflowing and filter the exhausted gas, thereby improving the disposable negative pressure suction device. efficiency and reduce waste.

Description

A disposable negative pressure suction device that is easy to exhaust

【Technical field】

The utility model relates to the field of medical instruments, in particular to a disposable negative pressure suction device that is easy to exhaust.

【Background technique】

At present, when the disposable negative pressure suction device used in the hospital extracts the liquid in the human body, it is often difficult to control the position of the drainage tube head after the drainage tube is inserted into the human body, which leads to the extraction of more gas at the same time as the extraction of liquid. Before the liquid reaches the expected amount, the air bag has been filled with liquid and gas together, even if the liquid is not drawn out, the air bag is directly filled with the drawn gas, and the negative pressure is lost; although the existing one-time negative pressure suction device has exhaust and drainage You can close the regulating valve, open the exhaust and discharge port, discharge the gas and close the exhaust and liquid port and continue to use, repeat this operation until the disposable negative pressure suction device is filled with liquid. However, because the liquid extracted for medical treatment usually releases irritating gas and contains pathogenic bacteria, and the exhaust and liquid outlet of the existing disposable negative pressure suction device cannot prevent the overflow of liquid, the exhaust is opened and closed many times. The exhaust operation of the liquid discharge port can easily cause the liquid in the suction device to overflow and cause pollution, and the work efficiency is low. Usually, medical staff will choose to replace a new disposable negative pressure suction device when the existing disposable negative pressure suction device is not filled with liquid but loses negative pressure to perform liquid extraction treatment, consuming multiple disposable negative pressure suction devices. Only the device can achieve the therapeutic effect that a disposable negative pressure suction device can achieve in an ideal state, resulting in waste. Although the existing non-disposable negative pressure suction devices can be reused to reduce waste, the non-disposable negative pressure suction devices are bulky and bulky, inconvenient to transfer or carry, and have a narrow scope of application.

In order to facilitate the discharge of gas in the airbag, the Chinese utility model with the authorization announcement number CN 202538129 U discloses a medical negative pressure suction device with a one-way exhaust port, but the negative pressure suction device still remains in the process of exhausting. There is no protection against accidental seepage of liquids and no filtering of irritating gases.

【Content of utility model】

In order to solve the above problems, the purpose of the present invention is to provide a disposable negative pressure suction device that is easy to exhaust, which is simple in structure, light and portable, low in cost, and has a wide range of applications. The exhaust gas is filtered to improve the use efficiency of the disposable negative pressure suction device and reduce waste.

In order to achieve the above object, the technical scheme adopted by the present utility model is:

An easy-to-exhaust disposable negative pressure suction device, comprising an air bag, a drainage port, an exhaust and liquid discharge port, a spring, an air bag cover, a regulating valve, a lifting ear, a soft rubber tube, a drainage tube and a one-way exhaust filter valve, and a spring Installed in the air bag, the spring is coaxial with the air bag, and its two compression ends are respectively connected to the bottom of the air bag and the inner side of the air bag cover. The one-way exhaust filter valve includes a three-way pipe, a waterproof and breathable membrane, a filter block, and a one-way valve; the three-way pipe includes a first channel, a second channel and a third channel; from the inside to the outside of the first channel, it is fixed and installed in sequence Waterproof and breathable membrane, filter block and one-way valve; the second channel is connected with the drainage port, the third channel is connected with the regulating valve, and the regulating valve is connected with the drainage pipe.

The utility model optimizes the connection relationship of the one-way exhaust filter valve, further, the drainage port is detachably connected to the one-way exhaust filter valve through a soft rubber tube and airtightly connected, and the one-way exhaust filter valve is connected to the regulating valve through the soft rubber tube. Removable installation with gas-tight connection.

The utility model optimizes the composition and structure of the filter block, and further, the filter block is a cylindrical activated carbon wrapped by a non-woven fabric.

The utility model optimizes the composition and structure of the filter block, and further, the filter block is a cylindrical block-shaped diatom mud.

The utility model optimizes the installation position of the waterproof and breathable membrane, and further, the waterproof and breathable membrane is attached to the surface of the filter block.

The utility model optimizes the material of the waterproof and breathable membrane, and further, the material of the waterproof and breathable membrane is polytetrafluoroethylene.

The utility model optimizes the shape of the three-way pipe, and further, the three-way pipe is a T-shaped three-way pipe, the first channel is vertical to the second channel, and the first channel is vertical to the third channel.

The utility model optimizes the material of the three-way pipe, and further, the three-way pipe is made of polypropylene material.

In the present utility model, by closing the regulating valve and squeezing the airbag, the air in the airbag can be discharged through the one-way exhaust filter valve, and the airbag can be used after the airbag is released. The breathable membrane can block the liquid while discharging the gas and prevent the liquid from seeping out. The filter block can filter the irritating gas and adsorb the pathogenic bacteria.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present utility model are:

1. The utility model is easy to exhaust, can effectively prevent liquid leakage and filter gas, and medical staff can perform exhaust operation with confidence, reducing waste caused by frequent replacement of new equipment.

2. Since the operation of opening and closing the exhaust and liquid outlet is reduced, the time consuming of the exhaust operation can be greatly reduced and the work efficiency can be improved.

3. The one-way exhaust filter valve has small volume, simple structure and few consumables, which can ensure that the utility model has good portability, wide applicability and low production cost.

【Description of drawings】

FIG. 1 is a schematic diagram of a disposable negative pressure suction device that is easy to exhaust according to an embodiment of the present invention.

2 is an enlarged cross-sectional view of a one-way exhaust filter valve provided by an embodiment of the present invention.

Among them: 1- one-way exhaust filter valve, 11- three-way pipe, 111- first channel, 112- second channel, 113- third channel, 12- waterproof breathable membrane, 13- filter block, 14- one-way Valve, 2-regulating valve, 3-soft hose, 4-airbag, 41-airbag cover, 42-spring, 5-drainage port, 6-lifting lug, 7-exhaust and drain port, 8-drainage tube.

【Detailed ways】

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. The accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted or enlarged. or reduction, does not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures, components and their descriptions in the drawings may be omitted. Based on the embodiments of the present invention, those skilled in the art may All other embodiments obtained without creative work fall within the protection scope of the present invention.

An easy-to-exhaust disposable negative pressure suction device, comprising an air bag 4, a drainage port 5, an exhaust and liquid discharge port 7, a spring 42, an air bag cover 41, a regulating valve 2, a lifting ear 6, a soft rubber tube 3, and a drainage tube 8 And the one-way exhaust filter valve 1, the spring 42 is installed in the air bag 4, the spring 42 is coaxial with the air bag 4, its two compression ends are respectively connected to the bottom of the air bag 4 and the inner side of the air bag cover 41, the drainage port 5, the lifting ear 6, the exhaust air The liquid discharge port 7 is fixedly installed on the airbag cover 41 in sequence, and the airbag cover 41 is airtightly installed with the airbag 4; The three-way pipe 11 includes a first channel 111 , a second channel 112 and a third channel 113 ; from the inside to the outside of the first channel 111 , the waterproof and breathable membrane 12 , the filter block 13 , and the one-way valve 14 are sequentially fixed and installed; the second channel 112 It is connected with the drainage port 5, the third channel 113 is connected with the regulating valve 2, and the regulating valve 2 is connected with the drainage pipe 8; the outer diameter of the first channel 111 is controlled within 20mm, the wall thickness is controlled between 1-2mm, and the length is controlled within Within 30mm; the size of the second channel 112 and the third channel 113 are the same, the outer diameter is controlled between 10-15mm, the wall thickness is controlled between 1-2mm, and the length is controlled at about 10mm; the filter block 13 is a cylinder Its diameter matches the inner diameter of the first channel 111, its axis coincides with the axis of the first channel 111, and is glued and fixed in the first channel 111, or the corresponding part of the first channel 111 can be partially melted, and after the filter block 13 is adhered Cooling and fixing; the waterproof and breathable membrane 12 is a circular sheet, its diameter matches the inner diameter of the first channel 111, its axis coincides with the axis of the first channel 111, and it is glued and fixed in the first channel 111, or it can be corresponding to the first channel 111. The parts are partially melted, and the waterproof and breathable membrane 12 is adhered to be cooled and fixed; the one-way valve 14 does not need to specify a certain model, and a common national standard model that matches the first channel 111 can be used.

The utility model adds a one-way exhaust filter valve 1 on the basis of the existing disposable negative pressure suction device. The one-way exhaust filter valve 1 is installed between the drainage port 5 and the regulating valve 2, and the one-way exhaust filter The one-way valve 14 in the valve 1 is in a closed state during non-exhaust operation, preventing external air from entering the airbag 4, and the airbag 4 will not leak due to the connection of the one-way exhaust filter valve 1, resulting in negative pressure consumption. The regulating valve 2 can normally control the suction force of the airbag 4 to the body fluid. When it is necessary to discharge the gas in the air bag 4, close the regulating valve 2, squeeze the air bag 4 to discharge the gas through the one-way exhaust filter valve 1, and release the air bag 4 after the exhaust is completed. The operation is very simple and time-consuming. The built-in waterproof and breathable membrane 12 of the one-way exhaust filter valve 1 can effectively prevent the accidental leakage of liquid during exhaust, and the operator does not have to worry about the pollution caused by the leakage of the liquid due to the excessive extrusion of the airbag 4 due to careless operation; The filter block 13 can filter the irritating gas and adsorb pathogenic bacteria. Of course, the filter block 13 cannot guarantee the complete removal of the irritating components in the gas, nor can it guarantee the complete adsorption of pathogenic bacteria. As far as the negative pressure suction device is concerned, it can greatly reduce the possibility that the exhausted gas will harm the human body with a very small increase in cost.

Preferably, in order to reduce the difficulty of production, the drainage port 5 is detachably and airtightly connected to the one-way exhaust filter valve 1 through the soft rubber tube 3, and the one-way exhaust filter valve 1 is detachable and airtight to the regulating valve 2 through the soft rubber tube 3 The connection makes the one-way exhaust filter valve 1 easy to match and install with the existing disposable negative pressure suction device. It does not need to make major changes or redoes to the existing mold during production, and only needs to produce the one-way exhaust filter valve separately. 1. Sleeve the finished one-way exhaust filter valve 1 with the prepared drainage port 5 and the regulating valve 2 through the soft rubber tube 3. The socket connection method is the same as the existing drainage port 5 and the regulating valve 2 The socket connection method is consistent, and the socket connection method can ensure good air tightness.

Preferably, the filter block 13 adopts a combination of cylindrical activated carbon wrapped by non-woven fabric, the activated carbon has low price and good adsorption, and can better control the cost under the premise of ensuring the use effect.

Preferably, the filter block 13 is made of cylindrical block diatom mud, which has better shape stability than activated carbon, and can be installed in the one-way exhaust filter valve 1 without wrapping non-woven fabrics, and the diatom mud has better shape stability than activated carbon. The adsorption performance of mud is much greater than that of activated carbon. Under the same filter and adsorption performance index, the required amount is less, and it can be made thinner, which is beneficial to shorten the length of the first channel 111, so that the one-way exhaust filter valve 1 can achieve the volume Smaller, which improves the portability of the utility model.

Preferably, the waterproof and breathable membrane 12 is attached to the surface of the filter block 13 to improve the compression resistance of the waterproof and breathable membrane 12 and prevent the waterproof and breathable membrane 12 from cracking during the exhaust process.

Preferably, the waterproof and breathable membrane 12 is made of polytetrafluoroethylene, and the polytetrafluoroethylene waterproof and breathable membrane 12 has excellent waterproof and breathable performance, and the price is reasonable.

Preferably, the three-way tube 11 is a T-shaped three-way tube 11, the first channel 111 is perpendicular to the second channel 112, and the first channel 111 is perpendicular to the third channel 113, so as to keep the outer part of the existing disposable negative pressure suction device to the maximum extent. Styling to reduce barriers to use.

Preferably, the three-way pipe 11 is made of polypropylene, which has good thermoplastic properties, is convenient for production, has a light specific gravity, ensures the portability of the present invention, is corrosion-resistant, does not react with corrosive body fluids such as gastric juice, and ensures serviceability. The low price of polypropylene is conducive to controlling costs.

When in use, the drainage tube 8 is passed into the part of the patient that needs drainage, the regulating valve 2 is opened, the air bag 4 is opened by the force of the spring 42, and a negative pressure is generated, and the liquid in the patient's body is sucked through the connected drainage tube 8, and the drainage is performed. In the process of inhaling gas, it is inevitable to inhale gas, occupy the internal space of airbag 4, and consume negative pressure; after airbag 4 is inflated to the maximum, if air is inhaled in airbag 4, the regulating valve 2 is closed, and airbag 4 is squeezed along the axial direction of airbag 4. The gas in 4 can be discharged out of the airbag 4 through the one-way exhaust filter valve 1. During the exhaust process, the one-way exhaust filter valve 1 only allows the gas to pass through, and the operator does not need to worry about the liquid in the airbag 4 caused by excessive extrusion of the airbag 4. Exudation; after the gas is discharged, reopen the regulating valve 2 to continue using, and repeat this operation until the air bag 4 is filled with liquid.

The above description is a detailed description of the preferred feasible embodiments of the present utility model, but the embodiments are not intended to limit the scope of the patent application of the present utility model. All should belong to the scope of the patent covered by this utility model.

Claims (8)

1. An easy-to-exhaust disposable negative pressure suction device, comprising an air bag, a drainage port, an exhaust and liquid discharge port, a spring, an air bag cover, a regulating valve, a lifting ear, a soft rubber tube and a drainage tube, and the spring is installed in the In the airbag, the spring is coaxial with the airbag, and its two compression ends are respectively connected to the bottom of the airbag and the inner side of the airbag cover, and the drainage port, the lifting lug, and the exhaust and liquid outlet are sequentially fixed and installed on the airbag. On the airbag cover, the airbag cover is airtightly installed with the airbag, and is characterized in that: it also includes a one-way exhaust filter valve; the one-way exhaust filter valve includes a three-way pipe, a waterproof and breathable membrane, a filter block, a single The three-way pipe includes a first channel, a second channel and a third channel; from the inside to the outside of the first channel, the waterproof and breathable membrane, the filter block and the one-way valve are sequentially fixed and installed. ; The second channel is connected with the drainage port, the third channel is connected with the regulating valve, and the regulating valve is connected with the drainage pipe. 2. A kind of disposable negative pressure suction device that is easy to exhaust according to claim 1, characterized in that: the drainage port is detachably connected with the one-way exhaust filter valve through a soft rubber tube and airtightly installed, so The one-way exhaust filter valve is detachably installed and airtightly connected to the regulating valve through a soft rubber tube. 3 . The disposable negative pressure suction device that is easy to exhaust according to claim 1 , wherein the filter block is a cylindrical activated carbon wrapped by a non-woven fabric. 4 . 4 . The disposable negative pressure suction device that is easy to exhaust according to claim 1 , wherein the filter block is a cylindrical block diatom mud. 5 . 5 . The disposable negative pressure suction device with easy exhaust according to claim 1 , wherein the waterproof and breathable membrane is attached to the surface of the filter block. 6 . 6 . The disposable negative pressure suction device with easy exhaust according to claim 1 , wherein the waterproof and breathable membrane is made of polytetrafluoroethylene. 7 . 7. A disposable negative pressure suction device that is easy to exhaust according to claim 1, wherein the three-way pipe is a T-shaped three-way pipe, the first channel and the second channel are Vertical, the first channel is vertical to the third channel. 8 . The disposable negative pressure suction device with easy exhaust according to claim 1 , wherein the three-way pipe is made of polypropylene. 9 .

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