Negative pressure drainage device capable of being used for sampling and detecting extractant

Abstract

The negative pressure drainage apparatus comprises a sample cup and a vertically telescopic negative pressure bag, two ends of the negative pressure bag are respectively provided with a support block A and a support block B, the support block A and the support block B are arranged on the same vertical line, the support block A is provided with an intubation tube, the support block B is provided with a tube outlet and a vent hole, and the tube outlet is communicated with the vent hole. An extension tube is arranged in the tube outlet, the upper end of the extension tube is communicated with the intubation tube, the upper end of the extension tube is not communicated with the cavity of the negative pressure bag, the lower end of the extension tube extends into the mouth of the specimen cup, the vent hole is used for air circulation between the cavity of the negative pressure bag and the cavity of the specimen cup, and the specimen cup is detachably connected with the negative pressure bag. A vertical pipe and a bag spring are arranged in a cavity of the negative pressure bag, the upper end of the vertical pipe is fixed to the A supporting block and communicated with the cannula, and the two ends of the bag spring are fixed to the A supporting block and the B supporting block respectively. According to the negative pressure drainage device, gastrointestinal tract extractum can be drained into the specimen cup in a negative pressure mode, and sampling and detection are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical appliance technical field, concretely is a negative pressure drainage device for sampling and detecting. BACKGROUND

[0002] Gastrointestinal decompression is a method that a stomach tube is inserted into oral cavity or nasal cavity, connected with gastrointestinal decompression device, under the action of negative pressure and siphon principle, the gastric contents are led out of the patient's body. This method can suck out the gas or liquid in the gastrointestinal tract, reduce the pressure in the gastrointestinal tract, reduce the degree of gastrointestinal distension, improve the blood circulation of the gastrointestinal wall, promote the healing and functional recovery of the stomach wound. First, confirm the patient, explain the operation purpose and process to the patient and family members, insert the stomach tube into the stomach, check whether the stomach tube is in the stomach, open the switch of the gastrointestinal decompression device, and then fix the drainage tube. After checking that the negative pressure drainage box is normal, arrange the materials.

[0003] Gastrointestinal decompression device is also called negative pressure drainage device. The existing gastrointestinal decompression device (manufacturer is Jiangsu Anning Medical Instrument Co., Ltd.) reduces the air pressure in the air bag by manually pressing the air bag, and sucks out the gas and liquid accumulated in the gastrointestinal tract through the principle of air pressure difference.

[0004] At present, medical staff usually collects gastrointestinal tract outflow into the existing specimen cup (manufacturer is Taizhou Bangsheng Medical Material Co., Ltd.), and then sends it to the laboratory for detection. However, the existing gastrointestinal decompression device and the existing specimen cup are separated, and the medical staff needs to transfer the outflow in the gastrointestinal decompression device to the specimen cup, which is troublesome. Therefore, how to design a negative pressure drainage device that can negative pressure drainage of gastrointestinal tract outflow into the specimen cup, which is convenient for sampling and detection, has become a problem to be solved in the field of medical appliance technology. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a negative pressure drainage device for sampling and detecting, which can negative pressure drainage of gastrointestinal tract outflow into the specimen cup, and is convenient for sampling and detecting.

[0006] In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical scheme:

[0007] The utility model provides a negative pressure drainage device for sampling and detecting, which comprises a specimen cup and a vertically retractable negative pressure bag, wherein two ends of the negative pressure bag are respectively provided with an A supporting block and a B supporting block, the A supporting block and the B supporting block are on the same vertical line, the A supporting block is provided with a cannula, the B supporting block is provided with a pipe outlet and a vent hole, the pipe outlet is provided with an extension pipe, the upper end of the extension pipe is connected with the cannula, the upper end of the extension pipe is not connected with the cavity of the negative pressure bag, the lower end of the extension pipe extends into the cup opening of the specimen cup, the vent hole is used for gas circulation between the cavity of the negative pressure bag and the cup cavity of the specimen cup, and the specimen cup and the negative pressure bag are detachably connected.

[0008] Compared with the prior art, the negative pressure drainage device for sampling and detecting has the following beneficial effects:

[0009] I. The negative pressure drainage device for sampling and detecting of the utility model, the negative pressure bag can refer to the existing gastrointestinal decompression device suction bag (the manufacturer is Jiangsu Anning Medical Instrument Co., Ltd.), and gastrointestinal tract exudates flow from the cannula to the extension pipe through the negative pressure of the negative pressure bag and are collected into the specimen cup. The gastrointestinal tract exudates are negatively pressure drained into the specimen cup, and sampling and detection are facilitated.

[0010] II. The gastrointestinal tract exudates are drained through the extension pipe, the gastrointestinal tract exudates are prevented from adhering to the inner wall of the cavity of the negative pressure bag, and the gastrointestinal tract exudates are successfully collected into the specimen cup.

[0011] Preferably, the upper end of the extension pipe is fixed to the standpipe, and the lower end of the extension pipe is retractable in the pipe outlet; when the negative pressure bag is contracted, the lower end of the extension pipe is extended; and when the negative pressure bag is expanded, the lower end of the extension pipe is retracted.

[0012] Preferably, the standpipe and the pipe outlet are on the same vertical line, the upper end of the extension pipe is fixed in the pipe outlet, the cavity of the negative pressure bag is further provided with a sleeve film, the sleeve film is arranged around the outer periphery of the standpipe, and the two ends of the sleeve film are fixed to the A supporting block and the B supporting block.

[0013] Preferably, the lower end of the extension pipe is provided with a water absorption sponge, the water absorption sponge is arranged around the outer periphery of the extension pipe, and the pipe opening of the extension pipe is sunk in the water absorption sponge. The water absorption sponge prevents liquid from spattering outward from the pipe opening of the extension pipe after the specimen cup is removed, thereby preventing pollution.

[0014] Preferably, the sealing cover is provided with an interface, the interface is threadedly connected between the B supporting block, the sealing cover can be covered on the cup opening of the specimen cup, and the sealing cover cover groove is threadedly connected with the cup opening of the specimen cup. The negative pressure bag is connected with the specimen cup through the sealing cover, and the sealing cover has good sealing performance. In addition, the sealing cover cover groove is matched with the cup opening of the existing specimen cup (manufactured by Taizhou Bangsheng Medical Material Co., Ltd.).

[0015] Preferably, the upper end of the water absorption sponge is fixed to the B supporting block, and the fastness is enhanced; the lower end of the extension pipe extends into the cup opening of the specimen cup through the interface, the extension pipe opening is not immersed in the liquid in the specimen cup, and after the specimen cup is removed, the extension pipe opening is not easy to drip liquid to cause pollution.

[0016] Preferably, a flow stop valve is arranged between the cannula and the stand pipe, the flow stop valve is used for blocking the liquid flow, the flow stop valve adopts an existing drainage bag cross valve, the valve core of the flow stop valve is arranged on the side surface of the A supporting block in an extendable manner, the valve core is provided with a core hole, and the valve core is provided with a core spring at the retracted end. Medical staff press the valve core once to open the flow stop valve, and gastrointestinal outflow passes through the core hole and flows into the stand pipe to be collected in the specimen cup; after the collection is completed, the medical staff press the valve core again to close the flow stop valve, the valve core cuts off the communication between the cannula and the stand pipe, and the drainage liquid is stopped. After the specimen cup is removed, the extension pipe opening continues to flow out liquid to cause pollution. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic diagram of the negative pressure drainage device separated in embodiment 1.

[0018] Figure 2 It is a structure schematic diagram of the sealing cover in embodiment 1.

[0019] Figure 3 It is a structure schematic diagram of the negative pressure drainage device when the negative pressure bag is expanded in embodiment 1.

[0020] Figure 4 It is a side view of the negative pressure drainage device when the negative pressure bag is expanded in embodiment 1.

[0021] Figure 5 It is a structure schematic diagram of the negative pressure drainage device when the negative pressure bag is contracted in embodiment 1.

[0022] Figure 6 It is a side view of the negative pressure drainage device when the negative pressure bag is contracted in embodiment 1.

[0023] Figure 7 It is a structure schematic diagram of the B supporting block in embodiment 1.

[0024] Figure 8 It is a structure schematic diagram of the negative pressure bag in embodiment 2.

[0025] Figure 9This is a cross-sectional view of the negative pressure bladder in Example 2.

[0026] Reference numerals: 1. Negative pressure bladder; 10. Bladder cavity; 11. Support block A; 12. Support block B; 13. Bladder spring; 14. Insertion tube; 15. Degassing tube; 16. Tube plug; 17. Stand tube; 18. Extension tube; 2. Check valve; 21. Valve core; 22. Core hole; 23. Core spring; 3. Outlet; 30. Vent hole; 31. Sheath; 32. Absorbent sponge; 4. Sealing cap; 41. Interface; 5. Specimen cup. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0028] Example 1

[0029] like Figures 1 to 7 The negative pressure drainage device shown can be used for sample collection and testing of extracts. It includes a specimen cup 5 and a vertically retractable negative pressure bladder 1. The negative pressure bladder 1 has an A support block 11 and a B support block 12 at its two ends. The A support block 11 and the B support block 12 are on the same vertical line. The A support block 11 has an insertion tube 14. The B support block 12 has an outlet 3 and several ventilation holes 30. The outlet 3 is located at the center of the B support block 12. An extension tube 18 is provided inside the outlet 3. The upper end of the extension tube 18 is connected to the insertion tube 14, but the upper end of the extension tube 18 is not connected to the cavity 10 of the negative pressure bladder 1. The lower end of the extension tube 18 extends into the mouth of the specimen cup 5. Several ventilation holes 30 are arranged in a circumferential array. The ventilation holes 30 are used for gas flow between the cavity 10 of the negative pressure bladder 1 and the cavity of the specimen cup 5. The specimen cup 5 and the negative pressure bladder 1 are detachably connected. The negative pressure bag 1 has a riser tube 17 and a spring 13 inside its cavity 10. The upper end of the riser tube 17 is fixed to support block A 11 and connected to the insertion tube 14. The two ends of the spring 13 are fixed to support block A 11 and support block B 12, respectively. The extension and retraction direction of the spring 13 is the same as that of the negative pressure bag 1: when the negative pressure bag 1 contracts, the spring 13 is compressed; when the negative pressure bag 1 expands, the spring 13 returns to its original position. The negative pressure bag 1 can be based on the suction bag of an existing gastrointestinal decompression device (manufactured by Jiangsu Anning Medical Device Co., Ltd.). The negative pressure of the negative pressure bag 1 causes gastrointestinal extract to flow from the insertion tube 14 to the extension tube 18 and be collected into the specimen cup 5. This achieves the purpose of negatively draining gastrointestinal extract into the specimen cup 5, facilitating sampling and testing.

[0030] The upper end of the extension tube 18 is fixed to the riser tube 17, and the lower end of the extension tube 18 extends and retracts within the outlet 3: when the negative pressure bladder 1 contracts, the lower end of the extension tube 18 extends; when the negative pressure bladder 1 expands, the lower end of the extension tube 18 retracts. Drainage is achieved through the extension tube 18 to prevent gastrointestinal exudate from adhering to the inner wall of the cavity 10 of the negative pressure bladder 1, ensuring that the gastrointestinal exudate is successfully collected into the specimen cup 5.

[0031] Reference Figure 1 , Figure 2 and Figure 4 This utility model also includes a sealing cap 4, which has an interface 41. The interface 41 is threadedly connected to the support block 12 (B). The sealing cap 4 can cover the mouth of the specimen cup 5, and the sealing groove of the sealing cap 4 is threadedly connected to the mouth of the specimen cup 5. The sealing cap 4 connects the negative pressure bladder 1 to the specimen cup 5, and the sealing cap 4 provides a good seal. Moreover, the sealing groove of the sealing cap 4 is compatible with the mouth of the existing specimen cup (manufactured by Taizhou Bangsheng Medical Materials Co., Ltd.).

[0032] Reference Figure 3 , Figure 4 and Figure 9 A check valve 2 is installed between the intubation tube 14 and the riser tube 17. The check valve 2 is used to block the flow of fluid. The check valve 2 adopts the existing cross valve of the drainage bag. The valve core 21 of the check valve 2 is telescopically mounted on the side of the A support block 11. The valve core 21 has a core hole 22, and a core spring 23 is provided at the retracted end of the valve core 21. When the medical staff presses the valve core 21 once, the check valve 2 opens, and the gastrointestinal drainage flows from the intubation tube 14 through the core hole 22 into the riser tube 17 and is collected into the specimen cup 5. After collection, the medical staff presses the valve core 21 again to close the check valve 2, which cuts off the connection between the intubation tube 14 and the riser tube 17 and stops the drainage fluid. This avoids the contamination caused by the continued flow of fluid from the extension tube 18 after the specimen cup 5 is removed.

[0033] Among them, the A support block 11 is provided with a venting pipe 15, which is used to release the gas in the cavity of the negative pressure bag 1. The venting pipe 15 is connected to the cavity of the negative pressure bag 1. The venting pipe 15 is provided with a pipe plug 16 at the opening of the venting pipe 15. The pipe plug 16 is used to seal the opening of the venting pipe 15. Both the venting pipe 15 and the pipe plug 16 can refer to the corresponding structure of existing gastrointestinal decompression devices.

[0034] Example 2

[0035] like Figures 8 to 9 The negative pressure drainage device shown can be used for sampling and detection of exudate. This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the extension tube 18 is set differently.

[0036] Reference Figure 9, the stand pipe 17 is in the same vertical line with the outlet pipe 3, the upper end of the extension pipe 18 is fixed in the outlet pipe 3, the negative pressure bag 1 is provided with a sleeve film 31 in the cavity 10, the sleeve film 31 is arranged around the outer periphery of the stand pipe 17, the two ends of the sleeve film 31 are fixed on the A support block 11 and the B support block 12 respectively, and the outer periphery of the sleeve film 31 is corrugated; when the negative pressure bag 1 is contracted, the outer periphery of the sleeve film 31 is folded, so that the length of the sleeve film 31 is shortened; when the negative pressure bag 1 is expanded, the outer periphery of the sleeve film 31 is unfolded, so that the length of the sleeve film 31 is lengthened.

[0037] With reference to Figure 8 The lower end of the extension pipe 18 is provided with a water absorption sponge 32, the water absorption sponge 32 is arranged around the outer periphery of the extension pipe 18, and the pipe opening of the extension pipe 18 is sunk in the water absorption sponge 32. The water absorption sponge 32 prevents liquid from spattering outwards to cause pollution after the specimen cup 5 is removed.

[0038] The upper end of the water absorption sponge 32 is fixed on the B support block 12, so that the firmness is enhanced; the lower end of the extension pipe 18 extends into the cup opening of the specimen cup 5 through the joint 41, the pipe opening of the extension pipe 18 is not immersed in the liquid in the specimen cup 5, so that a large amount of liquid is not attached to the pipe opening of the extension pipe 18 after the specimen cup 5 is removed, and the pipe opening of the extension pipe 18 is not easy to drip liquid to cause pollution.

[0039] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as the above preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments, as long as the changes or modifications do not deviate from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which do not deviate from the technical solution of the present application, are still within the scope of the present application.

Claims

1. A negative pressure drainage device for sampling and detecting exudates, characterized in that: The utility model relates to a specimen cup (5) and vertically telescopic negative pressure bag (1), negative pressure bag (1) both ends are equipped with A support block (11) and B support block (12) respectively, A support block (11) with B support block (12) are in the same vertical line, A support block (11) top is equipped with cannula (14), B support block (12) is equipped with out pipe mouth (3) and air hole (30), out pipe mouth (3) is equipped with extension pipe (18) inside, extension pipe (18) upper end with cannula (14) intercommunication, and extension pipe (18) upper end is not communicated with negative pressure bag (1) bag cavity (10), extension pipe (18) lower end stretches into specimen cup (5) cup mouth, air hole (30) is used for negative pressure bag (1) bag cavity (10) and specimen cup (5) cup cavity between gas flow, specimen cup (5) with negative pressure bag (1) between detachable connection, Negative pressure bag (1) bag cavity (10) is equipped with riser (17) and bag spring (13), riser (17) upper end is fixed in A support block (11) and with cannula (14) intercommunication, bag spring (13) both ends are fixed in A support block (11) and B support block (12), and bag spring (13) telescopic direction is same with negative pressure bag (1) telescopic direction.

2. The negative pressure wound therapy apparatus of claim 1, wherein: Riser (17) with out pipe mouth (3) are in the same vertical line, extension pipe (18) upper end is fixed in out pipe mouth (3), negative pressure bag (1) bag cavity (10) is also equipped with sleeve film (31), sleeve film (31) surrounds riser (17) periphery and is set, and sleeve film (31) both ends are fixed in A support block (11) and B support block (12) respectively.

3. The negative pressure wound therapy apparatus of claim 1, wherein: Extension pipe (18) lower end is equipped with water absorption sponge (32), and water absorption sponge (32) surrounds extension pipe (18) periphery and is set, and extension pipe (18) pipe mouth is sunk in water absorption sponge (32).

4. The negative pressure wound therapy apparatus of claim 3, wherein: Also include sealing cover (4), sealing cover (4) top is equipped with interface (41), interface (41) with B support block (12) between threaded connection, sealing cover (4) can be covered in specimen cup (5) cup mouth, and sealing cover (4) cover groove is threadedly connected with specimen cup (5) cup mouth.

5. The negative pressure wound therapy apparatus of claim 4, wherein: Water absorption sponge (32) upper end is fixed in B support block (12), and extension pipe (18) lower end is through interface (41) and stretches to specimen cup (5) cup mouth inside.

6. The negative pressure wound therapy apparatus of claim 5, wherein: Cannula (14) with riser (17) between be equipped with for blocking liquid flow's stop valve (2), stop valve (2) adopt existing drainage bag cross valve, stop valve (2) valve core (21) retractable setting in A support block (11) side, and valve core (21) is equipped with core hole (22), and valve core (21) retracted end is equipped with core spring (23).

7. The negative pressure wound therapy apparatus of claim 1, wherein: ​

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