Disposable negative pressure drainage device convenient to measure

Abstract

The utility model relates to the technical field of medical instruments, in particular to a disposable negative pressure drainage device convenient to measure, which comprises a drainage tube and a negative pressure balloon, and the drainage tube comprises an adsorption section and a drainage section; a first one-way valve is further arranged between the adsorption section and the drainage section, and when negative pressure suction force is generated in the negative pressure balloon, the first one-way valve is opened, so that the adsorption section is communicated with the drainage section; a positive pressure component is further arranged on the drainage section and used for conveying air into the drainage section. The positive pressure part is used for conveying air into the drainage section, drainage liquid remaining in the drainage section can be concentrated into the negative pressure balloon under pushing of airflow, and therefore metering accuracy can be improved when the total drainage amount in unit time is counted; moreover, after the residual drainage liquid in the drainage section is cleaned, the breeding of bacteria in the drainage section is effectively inhibited, so that the risk of infection of the patient in drainage treatment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a disposable, conveniently measurable negative pressure drainage device. Background Technology

[0002] Negative pressure drainage balls are mainly used in clinical settings in conjunction with drainage tubes to suction out pus, exudate, effusion, or tissue through negative pressure.

[0003] Chinese utility model patent application number CN201720729860.8 discloses a modified medical negative pressure drainage ball device, which includes a negative pressure drainage ball device and a negative pressure drainage ball protection device. The negative pressure drainage ball device has an elliptical drainage ball with a drainage and venting hole and a plug ring at the lower end. The upper end of the elliptical drainage ball is a spiral collar with a fixing ring on it. The middle opening of the spiral collar connects to a drainage tube. The lower end of the drainage tube is connected to a one-way valve, and the upper end of the drainage tube is connected to an anti-bend threaded suction tube structure. The anti-bend threaded suction tube structure is a threaded ring wrapped around the drainage tube. The threaded ring is flexible and can be bent into various angles as needed. The negative pressure drainage ball protection device includes a fixing strap and a drainage ball protective sleeve. The drainage ball protective sleeve has an openable top cover and a fixing hook on the inner side wall of the drainage ball protective sleeve. The fixing ring on the spiral collar can be fixed to the fixing hook. This novel improved medical negative pressure drainage ball device is portable and can be fixed in place to prevent kinking at the drainage tube connector. The protective device for the negative pressure drainage ball is detachable for easy carrying by patients. The cover of the drainage ball protective sleeve can be lifted for easy observation of the fluid inside the drainage ball, while also protecting the patient's privacy. However, it still has some shortcomings, as detailed below:

[0004] During negative pressure suction using the aforementioned device, as the negative pressure suction generated by the drainage bulb gradually decreases, some fluid remains in the drainage tube. Therefore, when it is necessary to calculate the total drainage volume per unit time, this residual fluid cannot be measured, potentially affecting the accuracy of medical staff's assessment of the patient's wound condition in real time. Furthermore, the residual drainage fluid in the drainage tube can easily lead to bacterial growth, increasing the risk of infection during patient treatment.

[0005] Therefore, how to collect the residual solution in the drainage tube into the drainage ball, thereby improving the accuracy of drainage fluid measurement, is a technical problem that urgently needs to be solved in the existing technology. Utility Model Content

[0006] The purpose of this invention is to address the problem in existing technologies where, during negative pressure suction, as the negative pressure generated by the drainage ball gradually decreases, some fluid remains in the drainage tube. This makes it impossible to measure the total drainage volume per unit time, potentially affecting the accuracy of medical staff's assessment of the patient's wound condition. Furthermore, the residual drainage fluid in the drainage tube can easily lead to bacterial growth, increasing the risk of infection during treatment. This invention provides a disposable, easily measurable negative pressure drainage device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A disposable, easily measurable negative pressure drainage device includes a drainage tube and a negative pressure balloon. The drainage tube includes an adsorption segment and a drainage segment. The adsorption segment is inserted into the area of ​​the body to be drained. The drainage segment is connected to the negative pressure balloon. When the negative pressure balloon is squeezed to deform it, it generates negative pressure suction. Under the action of negative pressure suction, the drainage fluid can be adsorbed along the drainage tube into the negative pressure balloon. A first one-way valve is also provided between the adsorption segment and the drainage segment. When negative pressure suction is generated in the negative pressure balloon, the first one-way valve opens, connecting the adsorption segment and the drainage segment. A positive pressure component is also provided on the drainage segment, which is used to deliver air into the drainage segment.

[0009] Preferably, the positive pressure component includes a gas tube and a positive pressure balloon. The gas tube is disposed on the side where the drainage segment connects to the negative pressure balloon, and the central axis of the gas tube and the central axis of the negative pressure balloon form an obtuse angle fit. The gas tube is also provided with a switch valve, which is used to control the connection or closure of the gas tube and the drainage segment. When the switch valve is open, squeezing the positive pressure balloon allows air to enter the drainage segment.

[0010] Preferably, the bottom of the negative pressure balloon is further provided with an aspiration needle tube, which is used to extract the drainage fluid in the negative pressure balloon. The aspiration needle tube is also provided with a scale mark, which is used to indicate the total amount of drainage fluid extracted into the aspiration needle tube.

[0011] Preferably, the bottom of the negative pressure balloon is provided with a sealing base, and a drain pipe is connected to the sealing base. The drain pipe and the sealing base are threaded together. The drain pipe has a first usage mode and a second usage mode. In the first usage mode, the drain pipe is located outside the negative pressure balloon, and the inlet end of the drain pipe is located inside the sealing base. In the second usage mode, the drain pipe extends into the inside of the negative pressure balloon. The aspiration needle is connected to the outlet end of the drain pipe. A second one-way valve is also provided inside the drain pipe. When a negative pressure environment is formed inside the aspiration needle, the second one-way valve opens.

[0012] Preferably, the aspiration needle tube is further provided with an exhaust valve, which is closed when a negative pressure environment is formed inside the aspiration needle tube and open when a positive pressure environment is formed inside the aspiration needle tube.

[0013] Preferably, the aspiration needle tube is further provided with a sealing cap, which is used to close the exhaust valve.

[0014] Preferably, the aspiration needle tube and the drainage tube are detachably connected.

[0015] Preferably, the negative pressure balloon is made of transparent or translucent silicone material.

[0016] Preferably, the negative pressure balloon and the positive pressure balloon are provided with a hanging ring.

[0017] Preferably, the surface of the adsorption segment is provided with multiple through holes.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. The disposable, convenient-to-measure negative pressure drainage device of this utility model is equipped with a positive pressure component for supplying air into the drainage segment. Under the impetus of the airflow, the drainage fluid remaining in the drainage segment can be concentrated into the negative pressure balloon, thereby improving the accuracy of measurement when calculating the total drainage volume per unit time. Furthermore, after cleaning the drainage fluid remaining in the drainage segment, it also effectively inhibits the growth of bacteria in the drainage segment, thereby reducing the risk of infection for patients during drainage treatment.

[0020] 2. The disposable, convenient-to-measure negative pressure drainage device of this utility model includes a sealing base at the bottom of the negative pressure balloon, a drain pipe connected to the sealing base, and a threaded connection between the drain pipe and the sealing base. The drain pipe has a first usage mode and a second usage mode. In the first usage mode, the drain pipe is located outside the negative pressure balloon, and the inlet end of the drain pipe is located inside the sealing base. In the second usage mode, the drain pipe extends into the negative pressure balloon. A suction needle is connected to the outlet end of the drain pipe, and a second one-way valve is also provided inside the drain pipe. When a negative pressure environment is formed inside the suction needle, the second one-way valve opens. With this structural design, when the drainage tube is adjusted to the second usage mode and the air inside the negative pressure balloon is extracted using the suction needle tube when there is drainage fluid inside the negative pressure balloon, a negative pressure environment can be formed inside the negative pressure balloon. This further improves the convenience of this invention in actual use, and also prevents the drainage fluid from flowing back into the drainage segment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a disposable, easily measurable negative pressure drainage device;

[0022] Figure 2 This is a cross-sectional structural diagram of the second usage mode of the drain pipe.

[0023] The markings in the diagram are: 1-drainage tube, 2-negative pressure balloon, 3-adsorption segment, 4-drainage segment, 5-first one-way valve, 6-positive pressure component, 7-gas tube body, 8-positive pressure balloon, 9-switching valve, 10-absorption needle tube, 11-sealing base, 12-drainage tube, 13-second one-way valve, 14-exhaust valve, 15-sealing cap, 16-hanging ring. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Example 1: As Figure 1 As shown, the disposable, convenient-to-measure negative pressure drainage device of this utility model includes a drainage tube 1 and a negative pressure balloon 2. The drainage tube 1 includes an adsorption segment 3 and a drainage segment 4. The adsorption segment 3 is used to extend into the part of the human body to be drained. The drainage segment 4 is connected to the negative pressure balloon 2. When the negative pressure balloon 2 is squeezed to deform it, the negative pressure balloon 2 can generate negative pressure suction. Under the action of negative pressure suction, the drainage fluid can be adsorbed along the drainage tube 1 into the negative pressure balloon 2. A first one-way valve 5 is also provided between the adsorption segment 3 and the drainage segment 4. When negative pressure suction is generated in the negative pressure balloon 2, the first one-way valve 5 opens, so that the adsorption segment 3 and the drainage segment 4 are connected. A positive pressure component 6 is also provided on the drainage segment 4. The positive pressure component 6 is used to deliver air into the drainage segment 4.

[0031] The present invention employs a disposable, conveniently measurable negative pressure drainage device, in which the positive pressure component 6 is used to deliver air into the drainage segment 4. Under the impetus of the airflow, the drainage fluid remaining in the drainage segment 4 can be concentrated into the negative pressure balloon 2, thereby improving the accuracy of measurement when calculating the total drainage volume per unit time. Furthermore, after cleaning the drainage fluid remaining in the drainage segment 4, it also effectively inhibits the growth of bacteria in the drainage segment 4, thereby reducing the risk of infection for patients during drainage treatment.

[0032] Specifically, in this embodiment, during the negative pressure drainage operation, the negative pressure balloon 2 is squeezed to create negative pressure suction. Under the action of negative pressure suction, the first one-way valve 5 opens, and the drainage fluid is collected into the negative pressure balloon 2 through the drainage tube 1. When clearing the drainage fluid remaining in the drainage segment 4, air is delivered into the drainage segment 4 through the positive pressure component 6. At this time, a positive pressure environment is formed in the drainage segment 4, the first one-way valve 5 closes, and the drainage fluid remaining in the drainage segment 4 is concentrated into the negative pressure balloon 2 under the push of the airflow.

[0033] It should be noted that the air delivered by the positive pressure component 6 into the drainage section 4 is discharged to the external environment through the one-way air valve on the negative pressure balloon 2.

[0034] In a preferred embodiment, based on the above scheme, the positive pressure component 6 further includes a gas tube 7 and a positive pressure balloon 8. The gas tube 7 is disposed on the side where the drainage segment 4 connects to the negative pressure balloon 2, and the central axis of the gas tube 7 and the central axis of the negative pressure balloon 2 form an obtuse angle fit. A switching valve 9 is also provided on the gas tube 7. The switching valve 9 is used to control the connection or closure between the gas tube 7 and the drainage segment 4. When the switching valve 9 is open, squeezing the positive pressure balloon 8 can allow air to enter the drainage segment 4.

[0035] In this embodiment, the central axis of the gas tube 7 and the central axis of the negative pressure balloon 2 are arranged at an obtuse angle. When air is delivered into the drainage segment 4 through the positive pressure component 6, the smoothness of the drainage fluid discharge in the drainage segment 4 can be improved.

[0036] Example 2: As Figure 1 As shown, the disposable, convenient-to-measure negative pressure drainage device of this utility model, based on the above-mentioned scheme, further includes a suction needle tube 10 at the bottom of the negative pressure balloon 2. The suction needle tube 10 is used to extract the drainage fluid from the negative pressure balloon 2. The suction needle tube 10 is also provided with a scale marking to indicate the total amount of drainage fluid extracted into the suction needle tube 10. This structural design allows for more accurate measurement of the drainage fluid, thereby improving the practicality of this invention in actual use. Furthermore, in this embodiment, during the negative pressure suction operation, the suction needle tube 10 is used to transfer the drainage fluid from the negative pressure balloon 2, preventing the drainage fluid from flowing back into the drainage segment 4 when the negative pressure balloon 2 is squeezed, thus further improving the practicality of this invention in actual use.

[0037] Example 3: As Figure 1 and Figure 2As shown, the disposable, convenient-to-measure negative pressure drainage device of this utility model, based on the above-mentioned solution, further includes a sealing base 11 at the bottom of the negative pressure balloon 2, with a drain pipe 12 connected to the sealing base 11. The drain pipe 12 and the sealing base 11 are threadedly connected. The drain pipe 12 has a first usage mode and a second usage mode. In the first usage mode, the drain pipe 12 is located outside the negative pressure balloon 2, and the inlet end of the drain pipe 12 is located inside the sealing base 11. In the second usage mode, the drain pipe 12 extends into the negative pressure balloon 2. The aspiration needle tube 10 is connected to the outlet end of the drain pipe 12. A second one-way valve 13 is also provided inside the drain pipe 12. When a negative pressure environment is formed inside the aspiration needle tube 10, the second one-way valve 13 opens.

[0038] Specifically, in this embodiment, turning the drain tube 12 clockwise allows it to extend into the negative pressure balloon 2 to form a second usage mode; turning the drain tube 12 counterclockwise allows it to exit from the negative pressure balloon 2 to form a first usage mode. In this embodiment, when there is drainage fluid inside the negative pressure balloon 2, adjusting the drain tube 12 to the second usage mode allows the air inside the negative pressure balloon 2 to be drawn out using the suction needle tube 10, creating a negative pressure environment inside the negative pressure balloon 2. This further improves the convenience of this invention in actual use and also prevents the drainage fluid from flowing back into the drainage segment 4 of the negative pressure balloon 2.

[0039] In this embodiment, when draining the drainage fluid from the negative pressure balloon 2, the drainage tube 12 is adjusted to the first usage mode, and the drainage fluid is extracted using the suction needle tube 10.

[0040] As a preferred embodiment, based on the above solution, the aspiration needle tube 10 is further provided with an exhaust valve 14. When a negative pressure environment is formed inside the aspiration needle tube 10, the exhaust valve 14 is in a closed state; when a positive pressure environment is formed inside the aspiration needle tube 10, the exhaust valve 14 is in an open state. With this structural arrangement, during the operation of using the aspiration needle tube 10 to extract air from the negative pressure balloon 2, the exhaust valve 14 allows for faster and more convenient air removal from the aspiration needle tube 10, thus further improving the convenience of this invention in practical use.

[0041] As a preferred embodiment, based on the above scheme, the suction needle tube 10 is further provided with a sealing cap 15, which is used to close the exhaust valve 14.

[0042] Specifically, in this embodiment, the sealing cap 15 is connected to the aspiration needle tube 10 by a threaded connection. In this embodiment, when the aspiration needle tube 10 is used to extract the drainage fluid from the negative pressure balloon 2, the sealing cap 15 is used to seal the exhaust valve 14, which can prevent the drainage fluid from leaking into the external environment, thereby further improving the practicality of this invention in actual use.

[0043] As a preferred embodiment, based on the above scheme, the aspiration needle tube 10 and the drainage tube 12 are further designed to be separable.

[0044] Specifically, in this embodiment, the suction needle tube 10 and the drain tube 12 are threadedly connected.

[0045] Example 4: Figure 1 and Figure 2 As shown, the disposable, easily measurable negative pressure drainage device of this invention, based on the above-mentioned solution, further features a negative pressure balloon 2 made of transparent or semi-transparent silicone material. This structural design allows medical personnel to more easily observe the color of the patient's drainage fluid, thereby further improving the practicality of this invention in actual use.

[0046] As a preferred embodiment, based on the above scheme, the negative pressure balloon 2 and the positive pressure balloon 8 are further provided with a hanging ring 16.

[0047] As a preferred embodiment, based on the above scheme, the surface of the adsorption segment 3 is further provided with multiple through holes. This structural arrangement reduces the risk of the liquid inlet of the adsorption segment 3 becoming blocked.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disposable, conveniently measurable negative pressure drainage device, characterized in that, The device includes a drainage tube and a negative pressure balloon. The drainage tube comprises an adsorption segment and a drainage segment. The adsorption segment is inserted into the area of ​​the body to be drained. The drainage segment is connected to the negative pressure balloon. When the negative pressure balloon is squeezed to deform it, it generates negative pressure suction, which draws the drainage fluid along the drainage tube into the negative pressure balloon. A first one-way valve is also provided between the adsorption segment and the drainage segment. When negative pressure suction is generated in the negative pressure balloon, the first one-way valve opens, connecting the adsorption segment and the drainage segment. A positive pressure component is also provided on the drainage segment to deliver air into the drainage segment.

2. The disposable, conveniently measurable negative pressure drainage device according to claim 1, characterized in that, The positive pressure component includes a gas tube and a positive pressure balloon. The gas tube is located on the side where the drainage segment connects to the negative pressure balloon, and the central axis of the gas tube and the central axis of the negative pressure balloon form an obtuse angle fit. The gas tube is also provided with a switch valve, which is used to control the connection or closure between the gas tube and the drainage segment. When the switch valve is open, squeezing the positive pressure balloon allows air to enter the drainage segment.

3. The disposable, conveniently measurable negative pressure drainage device according to claim 2, characterized in that, The bottom of the negative pressure balloon is also provided with an aspiration needle tube, which is used to extract the drainage fluid in the negative pressure balloon. The aspiration needle tube is also provided with a scale mark, which is used to indicate the total amount of drainage fluid extracted into the aspiration needle tube.

4. The disposable, conveniently measurable negative pressure drainage device according to claim 3, characterized in that, The negative pressure balloon has a sealing base at its bottom, and a drain pipe is connected to the sealing base. The drain pipe and the sealing base are threaded together. The drain pipe has a first usage mode and a second usage mode. In the first usage mode, the drain pipe is located outside the negative pressure balloon, and the inlet end of the drain pipe is located inside the sealing base. In the second usage mode, the drain pipe extends into the negative pressure balloon. The aspiration needle is connected to the outlet end of the drain pipe. A second one-way valve is also provided inside the drain pipe. When a negative pressure environment is formed inside the aspiration needle, the second one-way valve opens.

5. The disposable, conveniently measurable negative pressure drainage device according to claim 4, characterized in that, The suction needle is also equipped with an exhaust valve. When a negative pressure environment is formed inside the suction needle, the exhaust valve is closed, and when a positive pressure environment is formed inside the suction needle, the exhaust valve is open.

6. The disposable, conveniently measurable negative pressure drainage device according to claim 5, characterized in that, The suction needle is also equipped with a sealing cap, which is used to close the exhaust valve.

7. The disposable, conveniently measurable negative pressure drainage device according to any one of claims 4-6, characterized in that, The aspiration needle and the drainage tube are detachably connected.

8. The disposable, conveniently measurable negative pressure drainage device according to claim 1, characterized in that, The negative pressure balloon is made of transparent or semi-transparent silicone material.

9. The disposable, conveniently measurable negative pressure drainage device according to claim 2, characterized in that, The negative pressure balloon and the positive pressure balloon are equipped with hook rings.

10. The disposable, conveniently measurable negative pressure drainage device according to claim 1, characterized in that, The surface of the adsorption segment is provided with multiple through holes.

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