A gas drainage device, a drainage assembly and a method for using its negative pressure generation unit

Abstract

The present invention discloses a gas drainage device, a drainage assembly and a method for using a negative pressure generating unit, which relates to the technical field of medicine. The gas drainage device includes a drainage assembly and a negative pressure generating unit. The negative pressure generating unit is provided with a cavity, one end of the drainage assembly is communicated with the cavity, and the negative pressure generating unit forms a negative pressure between the cavity communicated with the drainage assembly and the position of the gas medium to be discharged from the human body by changing the volume of the cavity. The present invention makes the air pressure in the cavity decrease by changing the volume of the cavity in the negative pressure generating unit, and forms a negative pressure between the cavity and the intestine, having a better gas drainage effect.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and particularly to a gas drainage device, a drainage assembly and a method for using a negative pressure generating unit thereof. Background Art

[0002] The intestinal function of infants and young children is not yet fully developed, and their ability to digest food is weak. Abdominal distension is a common symptom in neonatal diseases. Using an anal tube for auxiliary exhaust is a treatment method to relieve abdominal distension and is commonly used for the treatment of intestinal gas accumulation. The principle of anal tube exhaust is relatively simple. The accumulated gas in the intestine will cause the internal pressure to rise. By connecting the intestine and the outside through the anal tube, the accumulated gas inside is discharged by using the internal and external pressure difference. However, the clinical situation is more complicated. For example, the anus of newborns is small, and the skin and mucous membranes are delicate. Tissue damage is likely to occur during the intubation process, so an anal tube made of a smaller and softer material is usually selected. Due to the compression of the anal tube by tissues, the entry of undischarged excrement into the anal tube, and the relatively small internal and external pressure differences, etc., will all affect the final auxiliary exhaust result. Clinical studies have shown that anal tube assisted exhaust with negative pressure can achieve better results. For example, a kind of intestinal negative pressure exhaust assistance device of a Chinese invention patent with the publication number of CN119386291A discloses a device for assisting exhaust by negative pressure. However, the existing devices for negative pressure anal tube exhaust are not very convenient during storage and use. Summary of the Invention

[0003] Aiming at the above deficiencies, the purpose of the present invention is to provide a gas drainage device that is convenient to use and store. By setting a drainage assembly and a negative pressure generating unit and connecting the two, the drainage assembly is connected to the human intestine, and the discharge of gas medium in the intestine is assisted by changing the volume of the cavity in the negative pressure generating unit. The purpose of the present invention is also to provide a drainage assembly of the above gas drainage device, and the purpose of the present invention is also to provide a method for using a negative pressure generating unit.

[0004] To this end, a gas drainage device of the present invention includes a drainage assembly and also includes a negative pressure generating unit. The negative pressure generating unit is provided with a cavity. One end of the drainage assembly is communicated with the cavity. The negative pressure generating unit forms a negative pressure between the cavity communicated with the drainage assembly and the position of the gas medium to be discharged in the human body by changing the volume of the cavity.

[0005] Further, the negative pressure generating unit includes a membrane-like outer shell, an elastic rib bent away from the membrane-like outer shell, and a limiting member for restricting the bending of the elastic rib. The membrane-like outer shell includes a first surface and a second surface. The limiting member can restrict the bending of the elastic rib so that the membrane-like outer shell is not stretched open. After the restriction of the limiting member is released, the elastic rib can bend and act on the first surface and the second surface of the membrane-like outer shell, so that the volume of the cavity between the first surface and the second surface changes.

[0006] Further, the elastic ribs are fixed in the middle of the first surface and the second surface, and the elastic ribs form slide rails. The limiting member includes clamping arms respectively used for cooperating with the elastic ribs on the first surface or the second surface. A clamping opening is provided on the clamping arm for clamping on the slide rail, and the limiting member can move along the slide rail so that the elastic ribs bend to drive the first surface and the second surface to separate.

[0007] Further, the edges of the first surface and the second surface are hermetically fixed, and a conduit communicating with the cavity is arranged between the first surface and the second surface. The conduit extends to the outside of the membranous housing and is fixedly connected to the interface, and the interface is adapted to be connected to one end of the gas exhaust assembly.

[0008] Further, it includes two negative pressure generating units, and the cavity of one negative pressure generating unit communicates with the cavity of the other negative pressure generating unit.

[0009] The guide rail formed by the elastic ribs is longitudinally arranged, and the end extends above the conduit. The end of the elastic rib includes an arc section fitting the conduit and a closed section for closing the conduit. When the limiting member moves to the arc section, the conduit is not closed, and when the limiting member moves to the closed section, the closed section is squeezed to deform towards the direction close to the membranous housing and presses the conduit to close it.

[0010] Further, conduits and interfaces are respectively arranged at both opposite ends of the negative pressure generating unit. Both ends of the elastic rib extend above the corresponding conduits and form corresponding arc sections and closed sections, and two limiting members are arranged on the elastic rib.

[0011] Further, it also includes a sealed bag, and a liquid is arranged in the sealed bag. One of the interfaces of the negative pressure generating unit is connected to the sealed bag through a pipeline.

[0012] The present invention also includes a gas exhaust assembly for the above gas exhaust device, including a silica gel hose. A scale is provided on the silica gel hose, and side holes are provided at one end or both ends of the silica gel hose.

[0013] The present invention also includes a method for using the negative pressure generating unit of the above gas exhaust device, including the following steps:

[0014] S1: Move the lower limiting member to the lower closed section, move the upper limiting member to the upper arc section, and exhaust air into the cavity;

[0015] S2: When a certain amount of gas is exhausted into the bag body, move the upper limiting member to the closed section;

[0016] S3: Move the lower limiting member towards the middle of the negative pressure generating unit. Under the action of the lower limiting member, the elastic rib squeezes the cavity. After the volume decreases, the gas enters the liquid in the sealed bag for absorption;

[0017] S4: Move the upper limit member to the middle of the negative pressure generating unit and restore the negative pressure generating unit.

[0018] S5: Repeat steps S1 to S4 for exhausting air.

[0019] The beneficial technical effects of the present invention are as follows:

[0020] A gas exhaust device and exhaust assembly of the present invention include an exhaust assembly (a silicone hose, i.e., an anal tube is used in a specific implementation), and a negative pressure generating unit. The negative pressure generating unit is provided with a cavity. One end of the exhaust assembly is communicated with the cavity of the negative pressure generating unit, and the other end is for being inserted into the human intestine. By changing the volume of the cavity, the air pressure in the cavity is reduced, and a negative pressure is formed between the cavity and the intestine. Therefore, it has a better air exhaust effect.

[0021] In a specific embodiment of the present invention, the negative pressure generating unit is a bag body. An interface for connecting the anal tube is provided on the bag body, and the interface is communicated with the cavity. Elastic ribs that bend away from the bag body are provided on the bag body. In the unused state (natural state), the elastic ribs are held in a straight state by a limit member. When in use, by moving or removing the limit member, the elastic ribs are completely deformed, and the bag body is expanded, thereby reducing the air pressure inside the bag body cavity.

[0022] In some other specific embodiments of the present invention, each end of the bag body is provided with an interface and a catheter, and the end of the elastic rib extends to the catheter. The end structure of the elastic rib enables the limit member to move along the guide rail formed by the elastic rib to one of the end segments, i.e., the arc segment, and when the elastic rib expands the bag body, it will not block the catheter. When the limit member continues to move to the closed segment, it will cooperate with the closed segment to block the catheter, so that the gas in the bag body will not overflow outside the bag body. When in use, move a limit member to the closed segment close to the interface for connecting the sealed bag. After inserting the anal tube, move the other limit member to expand the bag body. After exhausting air, continue to move this limit member to also block the catheter on the side of the anal tube. Move the limit member on the side of the sealed bag towards the middle to make the volume of the bag body smaller by extrusion. The gas in the bag body is squeezed into the liquid in the sealed bag for absorption. Then move the other limit member to the middle, and the previous steps can be repeated to perform exhaust in a cycle. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of a specific embodiment of an exhaust assembly (anal tube).

[0024] Figure 2 It is a schematic diagram of the anal tube and the sealed packaging bag.

[0025] Figure 3 It is a schematic diagram of the negative pressure generating unit in Embodiment 1.

[0026] Figure 4 An enlarged schematic view of the cross-section of the elastic rib and the limiting member;

[0027] Figure 5 A schematic view of the negative pressure generating unit of Embodiment 2;

[0028] Figure 6 A schematic view of the connection between the negative pressure generating unit and the sealed bag in Embodiment 2;

[0029] Figure 7 An enlarged cross-sectional view of the catheter and the arc segment;

[0030] Figure 8 An enlarged schematic view of the end of the elastic rib.

[0031] Explanation of reference numerals: 1, anal canal; 101, side holes; 2, sealed packaging bag; 3, negative pressure generating unit; 301, membrane-like outer shell; 302, cavity; 303, first surface; 304, second surface; 305, catheter; 306, interface; 307, elastic rib; 3071, arc segment; 3072, closed segment; 308, limiting member; 309, clamping arm; 310, bayonet; 311, connecting rod; 4, sealed bag; 5, pipeline. Detailed implementation manners

[0032] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0033] Referring to Figures 1 to 8 As shown, a gas guiding and exhausting device of the present invention is mainly used for assisting in exhausting flatulence of newborns, and mainly includes a guiding and exhausting assembly and a negative pressure generating unit 3. The guiding and exhausting assembly is used to be inserted into the intestine to exhaust the accumulated gas in the intestine. The negative pressure generating unit 3 is provided with a cavity 302 for forming a negative pressure and guiding the intestinal accumulated gas exhausted by the guiding and exhausting assembly into the cavity 302. The specific solution includes: one end of the guiding and exhausting assembly is communicated with the cavity 302, so that the cavity 302 is communicated with the intestine through the guiding and exhausting assembly. The negative pressure generating unit 3 forms a negative pressure between the cavity 302 communicated with the guiding and exhausting assembly and the position of the human body to be exhausted of gas medium, that is, the intestine, by changing the volume of the cavity 302. The components of the guiding and exhausting device will be described separately through specific embodiments below.

[0034] Referring to Figure 1 and Figure 2 As shown, the guiding and exhausting assembly mainly includes an anal canal 1, and the anal canal 1 is made of a silicone hose. Figure 2 As shown is a schematic view of the anal canal 1 stored in the sealed packaging bag 2. Figure 1Schematic diagram of the anal tube 1 after being taken out from the sealed packaging bag. The anal tube 1 may be provided with scales, which are easy to master the insertion depth. The scales may be provided only at one end or both ends of the anal tube 1. Clinically, the insertion depth of the infant anal tube 1 is generally 2.5 - 4.0 cm. Therefore, the length of the scale provided on the anal tube 1 may be selected as 5.0 cm. In order to take into account the use of other age groups of children, the length of the scale provided may also be appropriately extended. One or several side holes 101 may also be provided on the side of the anal tube 1. The side holes 101 are mainly provided at both ends or one end of the anal tube 1. After inserting the end with the side holes 101 into the intestine, in fact, the air inlet between the intestine and the anal tube 1 is increased. In the case where the intestinal tissue may compress part of the anal tube 1, more air inlets can ensure more sufficient and smoother air conduction; when the end with the side holes 101 is used to connect to the negative pressure generating unit 3, the negative pressure generating unit 3 may be provided with a corresponding tubular interface 306, and the end of the anal tube 1 is sleeved into the interface 306 and tightly fitted to form a seal. The shape of the interface 306 matches the end. The provided side holes 101 can reduce the resistance when the anal tube 1 is sleeved, facilitating the sleeving. After sleeving, the position of the side holes 101 is at one end of the anal tube 1 so that the side holes 101 can be blocked by the outer wall of the interface 306 of the negative pressure generating unit. The anal tube 1 can not only be used in cooperation with the negative pressure generating unit 3, but also be used alone, such as for indwelling anal tube exhaust. The provided side holes 101 can not only effectively remove the accumulated gas in the intestinal cavity, but also ensure the patency of the lumen. It can also be used for ordinary enema, and can be taken home for enema for babies with megacolon.

[0035] Referring to Figure 3 As shown, in this specific embodiment 1, the negative pressure generating unit 3 includes a membranous outer shell 301, an elastic rib 307 that bends away from the membranous outer shell 301, and a limiting member 308 that limits the bending of the elastic rib 307. The membranous outer shell 301 may be a bag body made of a plastic film that is closed on all four sides, including a first surface 303 and a second surface 304. A catheter 305 is inserted between the first surface 303 and the second surface 304. One end of the catheter 305 communicates with the cavity 302, and the other end extends out of the bag body and is provided with an interface 306. The interface 306 may adopt a rigid tube. One end of the catheter is fixed on the inner wall of the rigid tube. The interface is fixed to the bag body. The interface 306 is connected to one end of the drainage component, that is, the anal tube 1. The connection method may adopt a tightly fitted sleeving method of the anal tube 1, or a thread may be provided on the interface 306, and a screw tube with an internal thread is pre-set at one end of the anal tube 1, and the screw tube is threadedly connected to the interface 306. Of course, it may also be other connection methods in the prior art. A detachable connection cover may be provided before the interface is connected to the anal tube. Referring to Figure 3 and Figure 4As shown, the first surface 303 and the second surface 304 are fixed with elastic ribs 307, and the elastic ribs 307 extend from one side edge of the first surface 303 and the second surface 304 or a position close to one side edge to the opposite other side edge or a position close thereto. The elastic ribs 307 are curved in an arc shape in a natural state, and their cross-section can be a truncated circle. The lower side of the truncated circle can also be provided with a rectangle or other shapes as a bottom fixed on the first surface 303 and the second surface 304. It should be noted that in this embodiment, each relatively independent cavity 302 corresponds to one bag body, and one elastic rib 307 is provided on each side and is provided in the middle of the first surface 303 and the second surface 304 of the bag body. Two or more parallel elastic ribs 307 can also be provided on each side of the bag body to better open the bag body. As mentioned above, the elastic ribs 307 are bent in a natural state, and the bag body is opened. Referring to FIG. Figure 3 and Figure 4 As shown, a stopper 308 is also provided, and the stopper 308 includes a clamping arm 309 for respectively cooperating with the elastic ribs 307 on the first surface 303 and the second surface 304. The elastic ribs 307 and the clamping arm 309 can be made of plastic to reduce the cost. The clamping arm 309 is provided with a clamping hole 310 to clamp the elastic ribs 307. The clamping arms 309 on both sides are fixed by connecting rods 311. In this embodiment, the clamping arm and the connecting rod are integrally formed. The stopper 308 is moved to the middle of the bag body to limit the bending of the elastic ribs 307. At this time, the volume of the cavity 302 formed between the first surface 303 and the second surface 304 is small. When the stopper 308 is removed or moved to one end of the bag body along the slide rail formed by the elastic ribs 307, the elastic ribs 307 return to the bent state, and the first surface 303 and the second surface 304 of the bag body are stretched and separated, and the volume becomes larger to form negative pressure. The operation process is as follows: unpack the anal canal 1 and the sealed packaging bag 2 of the negative pressure generating unit 3, connect one end of the anal canal 1 to the interface 306 of the negative pressure generating unit 3, lubricate the insertion position of the infant after checking, insert one end of the anal canal 1 into the intestine to the predetermined scale position, push the limiter 308 from the middle of the bag to one side, and discharge the accumulated gas in the intestine. After completion, use the sealing structure of the bag to close the catheter 305 or clamp the catheter 305 with a clip to prevent the gas in the bag from overflowing, unplug the anal canal 1, and treat the negative pressure generating unit 3 after use as waste.

[0036] Reference Figure 3As shown, it includes two negative pressure generating units 3 with smaller volumes. Using negative pressure generating units 3 with smaller volumes can avoid discomfort to infants. The two negative pressure generating units 3 can be independent of each other and used separately, or the cavity 302 of one negative pressure generating unit 3 can be communicated with the cavity 302 of the other negative pressure generating unit 3. Clinically, when performing anal tube 1 exhaust, abdominal massage can be carried out simultaneously. Experienced medical staff can judge the discharge of accumulated gas by the degree of relief of abdominal distension. When there is a large amount of accumulated gas and the negative pressure generating unit 3 needs to be replaced, it is more troublesome to re-dismantle and replace the interface 306. However, for two negative pressure generating units 3 with communicated cavities 302, only need to move the limiting part 308 on the other negative pressure generating unit 3 to open it.

[0037] Refer to Figure 5 、 Figure 6 As shown, in Specific Embodiment 2, on the basis of Specific Embodiment 1, each of the opposite ends of the negative pressure generating unit 3 is provided with a catheter 305 and an interface 306. The other interface 306 is connected to a sealed bag 4 through a pipe 5. There is a liquid in the sealed bag 4. The liquid is physiological saline or tap water, mainly used to absorb the discharged accumulated gas. During the process of exhausting gas using the anal tube 1, it generally does not exceed 20 minutes. However, as the exhaust progresses, gas gradually enters the cavity 302 of the negative pressure generating unit 3, and its negative pressure effect will gradually weaken. In Embodiment 2, actually, the gas in the cavity 302 is discharged into another sealed bag 4 for absorption to restore the effect of the negative pressure generating unit 3 again and prevent gas pollution. The specific technical solution it realizes includes:

[0038] Refer to Figure 5 、 Figure 7 and Figure 8As shown, the guide rail formed by the elastic rib 307 is longitudinally arranged, and its end extends above the catheter 305. The end of the elastic rib 307 includes an arc segment 3071 and a closed segment 3072. The surface of the arc segment 3071 that cooperates with the catheter 305 is arc-shaped and fits the catheter 305. The arc segments 3071 on both sides of the catheter 305 form protection for the catheter 305, so that the catheter 305 is not closed when the limiting member 308 moves to the arc segment 3071. The closed segment 3072 is connected to the arc segment 3071, and the surface of the closed segment 3072 opposite to the catheter is flat or slightly curved. And in the natural state, the closed segment 3072 extends away from the catheter 305. When the limiting member 308 moves to the closed segment 3072, the limiting member 308 squeezes the closed segment 3072 to deform it towards the direction close to the membrane housing 301 and presses the catheter 305 to make it closed. The structures of the arc segment 3071 and the closed segment 3072 at the end can also be used in Embodiment 1 to realize the closing of the catheter 305. In Embodiment 2, both ends of the elastic rib 307 extend above the corresponding catheter 305 and form corresponding arc segments 3071 and closed segments 3072, and two independent limiting members 308 are provided on the elastic rib 307. The working process is as follows: Move one of the limiting members 308 to the closed segment 3072 at the lower end (connected to one end of the sealing bag 4) to prevent the liquid in the sealing bag 4 from being sucked into the negative pressure generating unit 3, and then move the upper limiting member 308 to the arc segment 3071 at the upper end (connected to one end of the anal tube 1) for exhaust. The present invention also includes a method for restoring the negative pressure generating unit 3 during the exhaust process. After more gas is discharged from the bag body, move the upper limiting member 308 (connected to one end of the anal tube 1) to the closed segment 3072 to prevent the gas in the negative pressure generating unit 3 from being squeezed into the baby's body. The lower limiting member 308 moves towards the middle, and the elastic rib 307 squeezes the cavity 302 under the action of the lower limiting member 308. After the volume decreases, the gas can only enter the liquid in the sealing bag 4 for absorption. At this time, move the upper limiting member 308 to the middle and move the lower limiting member 308 to the closed segment 3072 at the lower end, thereby restoring the negative pressure generating unit 3.

[0039] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A gas exhaust device, comprising an exhaust assembly, characterized in that: It also includes a negative pressure generating unit, wherein the negative pressure generating unit is provided with a cavity, one end of the drainage assembly is connected to the cavity, and the negative pressure generating unit forms a negative pressure between the cavity connected to the drainage assembly and the position of the gas medium to be discharged from the human body by changing the volume of the cavity; The negative pressure generating unit comprises a membrane-like shell, an elastic rib bent in a direction away from the membrane-like shell, and a limiter for limiting the bending of the elastic rib, the membrane-like shell comprises a first surface and a second surface, the limiter can limit the bending of the elastic rib so that the membrane-like shell is not stretched, and after the limiter is released, the elastic rib can bend and act on the first surface and the second surface of the membrane-like shell, so that the volume of the cavity between the first surface and the second surface changes; The elastic rib is used as a slide rail, and the limiter can move along the slide rail so that the elastic rib bends to drive the first surface and the second surface to separate; The edges of the first surface and the second surface are sealed and fixed, and a conduit communicating with the cavity is provided between the first surface and the second surface, the conduit extends to the outside of the membrane-like shell and is connected and fixed to an interface, and the interface is suitable for connecting to one end of the guide assembly; The guide rail formed by the elastic rib is arranged longitudinally, and the end thereof extends to the upper side of the catheter. The end of the elastic rib has an arc section that fits the catheter and a closing section for closing the catheter. When the limiting member moves to the arc section, the catheter is not closed. When the limiting member moves to the closing section, the closing section is squeezed to deform toward the membrane shell and the catheter is pressed to close it. The negative pressure generating unit is provided with a conduit and an interface at two opposite ends respectively, and the two ends of the elastic rib extend above the corresponding conduit and form a corresponding arc segment and a closed segment respectively, and the elastic rib is provided with two limit members.

2. A gas exhaust device according to claim 1, characterized in that: The elastic ribs are fixed at the middle of the first surface and the second surface, and the limiting member includes a clamping arm used to cooperate with the elastic ribs of the first surface or the second surface respectively, and a clamping slot is provided on the clamping arm for clamping on the slide rail.

3. A gas exhaust device according to claim 2, characterized in that: It also includes a sealing bag, in which liquid is arranged. One of the interfaces of the negative pressure generating unit is connected to the sealing bag through a pipeline, and the sealing bag is provided with absorption liquid.

4. A gas exhaust assembly, used in the gas exhaust device according to claim 1, characterized in that: The drainage assembly comprises a silicone hose, on which scales are arranged, and one or both ends of the silicone hose are provided with side holes.

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