Gastrointestinal decompression negative pressure drainage device

Abstract

The utility model belongs to the technical field of medical equipment, and relates to a gastrointestinal decompression negative pressure drainage device which comprises a negative pressure drainage device body, a suction tube, a connector and a film sleeve. The negative pressure drainage device body is composed of a transparent bag body, an upper end cover and a lower end cover, and an insertion opening is formed in the center of the upper end cover; the bottom end of the suction pipe is inserted into the transparent bag body through the insertion opening; a suction channel is formed in the center of the connector, the top end of the suction pipe is fixed to the bottom face of the connector, an injector can be connected to the suction channel in the top face of the connector and used for sucking a gastric juice sample in the transparent bag body, and a piston valve used for opening and closing the suction channel is arranged in the connector; the top end of the film sleeve is fixed to the bottom face of the connector, and the bottom end of the film sleeve is fixed to the top face of the upper end cover. The negative pressure drainage device can be used for gastrointestinal decompression of a patient, an injector can be connected to the connector for sampling, and blood, bile or other abnormal substances in gastric juice in the negative pressure drainage device body can be conveniently sucked and sampled.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, and in particular relates to a gastrointestinal decompression negative pressure drainage device. Background Technology

[0002] Negative pressure drainage devices are commonly used medical equipment for gastrointestinal decompression. During gastrointestinal decompression, it is necessary to observe the characteristics of the aspirated gastric fluid. If the aspirated gastric fluid is abnormal, such as the presence of blood, bile, or other abnormal substances, it may indicate upper gastrointestinal bleeding or other complications. In this case, further laboratory analysis may be required. Current techniques for gastric fluid sampling involve first disconnecting the negative pressure drainage device from the gastric tube, and then using a syringe connected to the external end of the gastric tube to aspirate the gastric fluid. However, the gastric fluid re-aspirated through the gastric tube using a syringe may not contain blood, bile, or other abnormal substances, while the blood, bile, or other abnormal substances already aspirated into the negative pressure drainage device are difficult to extract. Utility Model Content

[0003] The purpose of this invention is to provide a gastrointestinal decompression negative pressure drainage device to solve the problem mentioned in the background art of inconvenience in extracting blood, bile or other abnormal substances from the gastric fluid inside the negative pressure drainage device.

[0004] This utility model is achieved through the following technical solution:

[0005] A gastrointestinal decompression negative pressure drainage device includes a negative pressure drainage device body, which is composed of a transparent bag and an upper end cap and a lower end cap fixed to both ends of the transparent bag. An insertion port is provided at the center of the upper end cap.

[0006] Includes a suction tube, the bottom end of which is inserted into the transparent bag through an inlet for suctioning gastric fluid samples from the transparent bag;

[0007] The device includes a connector with a through-flow suction channel at its center. The top of the suction tube is fixed to the bottom of the connector, and the inside of the suction tube is connected to the suction channel. A syringe can be connected to the suction channel on the top of the connector for aspirating gastric fluid samples from the transparent bag. The connector is equipped with a piston valve for opening and closing the suction channel. When aspirating gastric fluid samples without connecting a syringe, the piston valve is closed to block the suction channel and prevent air leakage. After connecting a syringe, the piston valve is opened to allow the suction channel to flow smoothly, so that gastric fluid samples from the transparent bag can be aspirated using a syringe.

[0008] It also includes a membrane sleeve, which is fitted over the suction tube. The top of the membrane sleeve is fixed to the bottom of the connector, and its bottom is fixed to the top of the upper end cap. The membrane sleeve forms a seal between the connector and the inlet to prevent air leakage from the inlet during the gastrointestinal decompression and negative pressure drainage process.

[0009] Furthermore, the negative pressure drainage device body also includes a first spring disposed within the transparent bag, the first spring being used to generate and maintain negative pressure.

[0010] Furthermore, the upper end cap is provided with an outlet and an inlet, both of which are equipped with plugs that allow for opening and closing. After the gastric tube is inserted, before connecting the negative pressure drainage device to the gastric tube, the plug at the outlet needs to be removed to open the outlet, the body of the negative pressure drainage device is flattened to expel the air inside the body, the first spring is compressed, and then the outlet is sealed with the plug. With the body of the negative pressure drainage device in a flattened state, the plug at the inlet is opened to connect the gastric tube to the inlet. Under the rebound action of the first spring, negative pressure can be generated and maintained, allowing the patient's gastric juice to flow into the body of the negative pressure drainage device through the gastric tube, thereby performing gastrointestinal decompression.

[0011] Furthermore, the inner diameter of the insertion port is 3 to 6 times the outer diameter of the suction tube, allowing the suction tube a certain range of movement within the insertion port. When using a syringe to aspirate blood, bile, or other abnormal substances from the gastric fluid inside the negative pressure drainage device, the transparent bag allows the suction tube to be tilted so that its bottom end is aligned with the blood, bile, or other abnormal substances in the gastric fluid inside the transparent bag for sampling. The film sleeve is made of soft plastic film, ensuring that the film sleeve does not obstruct the suction tube when tilting or extending into the transparent bag.

[0012] Furthermore, the bottom end of the suction tube is connected to a flared opening, which can enlarge the suction diameter, making it easier to aim at and sample blood, bile, or other abnormal substances in the gastric fluid inside the transparent bag.

[0013] Furthermore, an elastic rubber sleeve is fixed to the inner side wall of the top section of the suction channel. The nipple of the syringe can be inserted into the elastic rubber sleeve, and the elastic rubber sleeve and the nipple of the syringe are press-fitted to form a seal, which can prevent air leakage caused by gaps between the nipple of the syringe and the suction channel. The elastic rubber sleeve can be tightly clamped to the nipple of the syringe, which has a fixing effect on the syringe.

[0014] Furthermore, a sleeve for assisting in stabilizing the syringe is fixed on the top surface of the connector. After the syringe tip is inserted into the elastic sleeve for connection, the sleeve is placed on the outside of the syringe barrel. This helps to improve the stability of the connection structure between the syringe and the connector, and reduces the possibility of the syringe tipping over and detaching from the connector. Based on the stable connection between the syringe and the connector, the syringe, connector and suction tube can be tilted synchronously by holding the syringe with one hand.

[0015] Furthermore, the piston valve comprises a piston, a T-shaped piston rod connected to one end of the piston, and a second spring fitted onto the T-shaped piston rod; the side wall of the connector has a bypass hole perpendicular to the suction channel, the piston is slidably disposed within the bypass hole, and the side wall of the connector is welded or integrally formed with a connecting pipe coaxial with the bypass hole, the outer end of the connecting pipe is threaded with a connecting cap, the T-shaped piston rod passes through the center of the connecting cap and is slidably connected to it, and the two ends of the second spring abut against the piston and the connecting cap respectively, and in the initial state the second spring is in a compressed state. The suction channel is blocked. When the syringe is connected, the syringe nipple is inserted into the elastic sleeve. The elastic sleeve and the syringe nipple are connected by a retainer and form a seal. Pulling the T-shaped piston rod outward causes the piston to exit the overlapping section of the suction channel and the bypass hole. The syringe nipple is then inserted into the bypass hole. After releasing the T-shaped piston rod, the second spring rebounds and pushes the piston against the syringe nipple, which has a certain fixing effect on the syringe. When the syringe nipple is pulled outward, the second spring automatically rebounds and pushes the piston to block the suction channel to prevent air leakage.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This negative pressure drainage device can be used to perform gastrointestinal decompression for patients. The operation of gastrointestinal decompression is the same as that of existing negative pressure drainage devices. The difference is that this negative pressure drainage device is equipped with an inlet, connector, suction tube, piston valve and membrane sleeve. Based on the transparency of the transparent bag of the negative pressure drainage device body, when blood, bile or other abnormal substances are observed in the gastric fluid in the transparent bag, or when sampling is required for other needs, a syringe can be connected to the connector for sampling, which facilitates the aspiration of blood, bile or other abnormal substances in the gastric fluid in the negative pressure drainage device body. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 2 for Figure 1 Enlarged schematic diagram of a local structure at point A;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention in its usage state;

[0022] Figure 4 for Figure 3Enlarged schematic diagram of the local structure at point B;

[0023] Figure 5 This is a cross-sectional view of another usage state of the present invention.

[0024] The components in the diagram are as follows: 1. Negative pressure drainage device body; 1.1. Transparent bag body; 1.2. Upper cap; 1.3. Lower cap; 1.4. First spring; 2. Outlet; 3. Plug; 4. Insert; 5. Connector; 5.1. Suction channel; 5.2. Bypass hole; 6. Piston valve; 6.1. Piston; 6.2. T-shaped piston rod; 6.3. Second spring; 7. Suction tube; 8. Membrane sleeve; 9. Inlet; 10. Trumpet mouth; 11. Elastic rubber sleeve; 12. Connecting tube; 13. Connecting cap; 14. Sleeve; 15. Syringe; 16. Gastric tube. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0027] A gastrointestinal decompression negative pressure drainage device, such as Figure 1 As shown, it mainly consists of a negative pressure drainage device body 1, a suction tube 7, a connector 5, a piston valve 6, and a diaphragm sleeve 8;

[0028] like Figure 1 As shown, the negative pressure drainage device body 1 consists of a transparent bag 1.1, an upper end cap 1.2 and a lower end cap 1.3 fixed to both ends of the transparent bag 1.1, and a first spring 1.4 disposed inside the transparent bag 1.1. The upper end cap 1.2 is provided with an outlet 2 and an inlet 9, and both the outlet 2 and the inlet 9 are provided with plugs 3 that can open and close the channels. The structure of the negative pressure drainage device body 1 is a known existing structure. The transparent bag 1.1 is transparent and visible, which makes it easy to observe the properties of the gastric fluid inside. The first spring 1.4 can be used to generate and maintain negative pressure.

[0029] like Figure 1 and Figure 2As shown, an insertion port 4 is provided at the center of the upper end cap 1.2. The bottom end of the suction tube 7 is inserted into the transparent bag 1.1 through the insertion port 4 for suctioning gastric fluid samples from the transparent bag 1.1.

[0030] like Figure 1 and Figure 2 As shown, the connector 5 has a vertically penetrating suction channel 5.1 at its center. The top end of the suction tube 7 is fixed to the bottom surface of the connector 5, and the inside of the suction tube 7 is connected to the suction channel 5.1. A syringe 15 can be connected to the suction channel 5.1 on the top surface of the connector 5 for suctioning gastric fluid samples from the transparent bag 1.1. The connector 5 is equipped with a piston valve 6 for opening and closing the suction channel 5.1. When the syringe 15 is not connected for suctioning gastric fluid samples, the piston valve 6 is closed to block the suction channel 5.1 to prevent air leakage from the suction channel 5.1. After connecting the syringe 15, the piston valve 6 is opened to make the suction channel 5.1 unobstructed, so that the syringe 15 can be used to suction gastric fluid samples from the transparent bag 1.1.

[0031] like Figure 1 and Figure 2 As shown, the membrane sleeve 8 is fitted onto the outside of the suction tube 7. The top end of the membrane sleeve 8 is fixed to the bottom surface of the connector 5, and its bottom end is fixed to the top surface of the upper end cap 1.2. The membrane sleeve 8 forms a seal between the connector 5 and the insertion port 4 to prevent air leakage from the insertion port 4 during the gastrointestinal decompression negative pressure drainage process.

[0032] Preferably, in this embodiment, such as Figure 3 and Figure 5 As shown, the inner diameter of the insertion port 4 is 3 to 6 times the outer diameter of the suction tube 7, so that the suction tube 7 has a certain range of movement space within the insertion port 4. When using the syringe 15 to aspirate blood, bile or other abnormal substances present in the gastric fluid in the negative pressure drainage device body 1, based on the transparency of the transparent bag 1.1, the suction tube 7 can be tilted so that its bottom end is aligned with the blood, bile or other abnormal substances in the gastric fluid in the transparent bag 1.1 for sampling. The film sleeve 8 is made of soft plastic film, so that when controlling the tilt of the suction tube 7 and the length of its insertion into the transparent bag 1.1, the film sleeve 8 will not cause obstruction.

[0033] Preferably, in this embodiment, such as Figure 1 As shown, the bottom end of the suction tube 7 is connected to a flared mouth 10, which can enlarge the suction diameter, making it easier to aim at the blood, bile or other abnormal substances in the gastric fluid inside the transparent bag 1.1 for sampling.

[0034] Preferably, in this embodiment, such as Figures 1 to 4As shown, an elastic sleeve 11 is fixed to the inner side wall of the top section of the suction channel 5.1. The nipple of the syringe 15 can be inserted into the elastic sleeve 11, and the elastic sleeve 11 and the nipple of the syringe 15 are press-fitted to form a seal, which can prevent air leakage caused by gaps between the nipple of the syringe 15 and the suction channel 5.1. The elastic sleeve 11 can be tightly clamped to the nipple of the syringe 15, which has a fixing effect on the syringe 15.

[0035] like Figures 1 to 5 As shown, the top surface of the connector 5 is fixed with a sleeve 14 for assisting in stabilizing the syringe 15. After the nipple of the syringe 15 is inserted into the elastic sleeve 11 for connection, the sleeve 14 is fitted over the outside of the syringe 15 barrel. This helps to improve the stability of the connection structure between the syringe 15 and the connector 5, and reduces the possibility of the syringe 15 tilting and detaching from the connector 5. Based on the stable connection between the syringe 15 and the connector 5, the syringe 15, connector 5 and suction tube 7 can be tilted synchronously by holding the syringe 15 with one hand.

[0036] Preferably, in this embodiment, such as Figures 1 to 4 As shown, the piston valve 6 consists of a piston 6.1, a T-shaped piston rod 6.2 connected to one end of the piston 6.1, and a second spring 6.3 fitted on the T-shaped piston rod 6.2; the side wall of the connector 5 is provided with a bypass hole 5.2 perpendicular to the suction channel 5.1, the piston 6.1 is slidably disposed in the bypass hole 5.2, the side wall of the connector 5 is welded with a connecting pipe 12 coaxial with the bypass hole 5.2, the outer end of the connecting pipe 12 is threadedly connected to a connecting cap 13, the T-shaped piston rod 6.2 passes through the center of the connecting cap 13 and is slidably connected to it, the two ends of the second spring 6.3 respectively abut against the piston 6.1 and the connecting cap 13, in the initial state the second spring 6.3 is in a compressed state the piston 6.1 blocks the suction channel 5.1;

[0037] When syringe 15 is connected, the nipple of syringe 15 is inserted into the elastic sleeve 11. The elastic sleeve 11 and the nipple of syringe 15 are connected by a retaining sleeve and form a seal. Pulling the T-shaped piston rod 6.2 outward causes the piston 6.1 to exit the overlapping section of the suction channel 5.1 and the bypass hole 5.2. The nipple of syringe 15 is then inserted into the bypass hole 5.2. After releasing the T-shaped piston rod 6.2, the second spring 6.3 rebounds and pushes the piston 6.1 against the nipple of syringe 15. 15 has a certain fixing function. When the nipple of syringe 15 is pulled out, the second spring 6.3 automatically rebounds and pushes the piston 6.1 to block the suction channel 5.1 to prevent air leakage. Specifically, the piston 6.1 is composed of a rigid inner core and a rubber sleeve wrapped around the rigid inner core. The rubber sleeve slides and forms a seal with the inner wall of the bypass hole 5.2. The structure of the piston 6.1 and the T-shaped piston rod 6.2 inside the bypass hole 5.2 is similar to the piston and piston rod structure inside the syringe barrel.

[0038] In addition, the piston valve 6 can also adopt the existing ball valve structure. The ball valve includes a valve body, a ball and a valve stem. The valve stem rotates the ball to realize the opening and closing of the internal channel of the valve body. This is an existing known technology and will not be described in detail here. In the piston valve 6 structure of this embodiment, the piston 6.1 has the function of pressing against the nipple of the syringe 15. After the syringe 15 is pulled out, the piston valve 6 has the effect of automatically returning to block the suction channel 5.1.

[0039] The working principle of this negative pressure drainage device is as follows:

[0040] When performing gastrointestinal decompression on a patient, after inserting the gastric tube 16 and before connecting the negative pressure drainage device to the gastric tube 16, the medical staff first pulls out the plug 3 at the outlet 2 of the negative pressure drainage device body 1 to open the outlet 2, flattens the negative pressure drainage device body 1 to expel the air inside the negative pressure drainage device body 1, the first spring 1.4 is compressed, and then the outlet 2 is blocked by the plug 3. With the negative pressure drainage device body 1 in the flattened state, the plug 3 at the inlet 9 is opened to connect the gastric tube 16 to the inlet 9. Under the rebound action of the first spring 1.4, negative pressure can be generated and maintained, so that the patient's gastric juice flows into the negative pressure drainage device body 1 through the gastric tube 16, thereby performing gastrointestinal decompression.

[0041] Based on the transparency of the transparent bag 1.1, when blood, bile, or other abnormal substances are observed in the gastric fluid inside the transparent bag 1.1, or when sampling is required for other reasons, a syringe 15 is connected to the connector 5 for sampling. Specifically, the nipple of the syringe 15 is inserted into the elastic sleeve 11, and the elastic sleeve 11 and the nipple of the syringe 15 are connected by a retainer to form a seal. The T-shaped piston rod 6.2 is pulled outward to make the piston 6.1 exit the overlapping section of the suction channel 5.1 and the bypass hole 5.2, and then the nipple of the syringe 15 is inserted into the bypass hole 5. 2. After releasing the T-shaped piston rod 6.2, the second spring 6.3 rebounds and pushes the piston 6.1 against the nipple of the syringe 15, which has a certain fixing effect on the syringe 15. Since the syringe 15 is connected to the suction tube 7 through the suction channel 5.1, by tilting the suction tube 7 so that its bottom end is aligned with the blood, bile or other abnormal substances in the gastric fluid in the transparent bag 1.1, the syringe 15 is used to draw samples. After the sampling is completed, when the nipple of the syringe 15 is pulled out, the second spring 6.3 automatically rebounds and pushes the piston 6.1 to block the suction channel 5.1 to prevent air leakage.

[0042] The negative pressure drainage device can be connected to a syringe 15, which allows for easy sampling of blood, bile, or other abnormal substances from the gastric fluid inside the negative pressure drainage device body 1.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A gastrointestinal decompression negative pressure drainage device, comprising a negative pressure drainage device body (1) which is composed of a transparent bag body (1.1) and an upper end cover (1.2) and a lower end cover (1.3) fixed at both ends of the transparent bag body (1.1), characterized in that: The upper end cover (1.2) is provided with a socket (4) at the center thereof; The suction pipe (7) is inserted into the transparent bag (1.1) through the socket (4); The joint (5) is provided with a suction channel (5.1) vertically penetrating the joint (5), the top end of the suction pipe (7) is fixed to the bottom surface of the joint (5) and communicates with the suction channel (5.1), a syringe (15) is connected to the top surface of the joint (5) at the suction channel (5.1) for sucking the gastric juice sample in the transparent bag (1.1), and a piston valve (6) is arranged in the joint (5) for opening and closing the suction channel (5.1). The film sleeve (8) is sleeved on the outside of the suction pipe (7), the top end of the film sleeve (8) is fixed to the bottom surface of the joint (5), and the bottom end of the film sleeve (8) is fixed to the top surface of the upper end cover (1.2).

2. The gastrointestinal decompression and negative pressure drain according to claim 1, wherein: The negative pressure drainage device further comprises a first spring (1.4) arranged in the transparent bag (1.1).

3. The gastrointestinal decompression and negative pressure drain according to claim 2, wherein: The upper end cover (1.2) is provided with an outlet (2) and an inlet (9), and the outlet (2) and the inlet (9) are provided with plugs (3) which can open and close the channels.

4. The gastrointestinal decompression and negative pressure drain according to claim 1, wherein: The inner diameter of the socket (4) is 3-6 times the outer diameter of the suction pipe (7).

5. The gastrointestinal decompression and negative pressure drain according to claim 4, wherein: The bottom end of the suction pipe (7) is connected with a trumpet mouth (10).

6. The gastrointestinal decompression and negative pressure drain according to claim 4, wherein: The top section of the suction channel (5.1) is fixed with an elastic rubber sleeve (11) on the inner side wall.

7. The gastrointestinal decompression and negative pressure drain according to claim 6, wherein: The top surface of the joint (5) is fixed with a sleeve (14) for assisting in stabilizing the syringe (15).

8. The gastrointestinal decompression and negative pressure drain according to claim 6 or 7, characterized in that: The piston valve (6) is composed of a piston (6.1), a T-shaped piston rod (6.2) connected to one end of the piston (6.1), and a second spring (6.3) sleeved on the T-shaped piston rod (6.2); the side wall of the joint (5) is provided with a bypass hole (5.2) vertically intersecting the suction channel (5.1), the piston (6.1) is slidingly arranged in the bypass hole (5.2), the side wall of the joint (5) is fixed with a connecting pipe (12) coaxial with the bypass hole (5.2), the outer end of the connecting pipe (12) is threadedly connected with a connecting cover (13), the T-shaped piston rod (6.2) penetrates the center of the connecting cover (13) and is slidingly connected therewith, the two ends of the second spring (6.3) abut against the piston (6.1) and the connecting cover (13) respectively, and in the initial state, the second spring (6.3) is in a compressed state and the piston (6.1) blocks the suction channel (5.1).

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