Gastrointestinal negative pressure drainage device

Abstract

This utility model discloses a gastrointestinal negative pressure drainage device, including a flexible collection tube and a switching valve assembly. The flexible collection tube has a cavity inside, and the top of the flexible collection tube has an air inlet and an air outlet communicating with the cavity. The switching valve assembly includes a valve body and a valve core. The valve body includes a central part, a first connecting part and a second connecting part. The central part has a cylindrical cavity and a spherical cavity communicating with each other. The first connecting part has a first channel communicating with the spherical cavity, and the air inlet is inserted into the first channel. The second connecting part has a second channel communicating with the spherical cavity. The second channel is used to connect with a gastric tube. The valve core has a third channel. The valve core can rotate to connect or block the first channel and the second channel through the third channel. By setting the switching valve assembly, the switching valve assembly can control the opening and closing of the cavity and the gastric tube, preventing the backflow of accumulated fluid into the gastric tube. The switching valve assembly can be reused multiple times, reducing manufacturing costs.

Description

Technical Field

[0001] The utility model relates to the technical field of gastrointestinal surgery, in particular to a gastrointestinal negative pressure drainage device. Background Art

[0002] In the field of gastrointestinal surgery, some patients have fluid or gas accumulation in their stomachs, which causes stomach distension and abdominal pain, making the patients very uncomfortable. Currently, negative pressure drainage technology is usually used to draw out the fluid or gas in the patient's stomach and discharge it out of the body to achieve a nursing effect. For the existing negative pressure drainage device, specific reference may be made to the utility model patent with announcement number CN215608103U. The existing negative pressure drainage device generally includes a soft built-in spring collecting tube 2 and a connecting hose 7. The above-mentioned existing patent sets a limiting mechanism 3 to prevent excessive pressure on the soft built-in spring collecting tube 2, which may cause the accumulated fluid to flow back into the connecting hose 7. The limiting mechanism 3 includes a limiting member 304 and a threaded connecting rod 305 that are threadedly connected to each other. The limiting member 304 cannot slide along the threaded connecting rod 305, thereby avoiding excessive pressure on the soft built-in spring collecting tube 2. However, this may make it more difficult to press the soft built-in spring collecting tube 2. In addition, the soft built-in spring collecting tube 2 is a disposable medical product. A limiting mechanism 3 must be set for each soft built-in spring collecting tube 2 produced, resulting in a high manufacturing cost. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a gastrointestinal negative pressure drainage device, which can control the connection and disconnection between the cavity and the stomach tube by setting a switch valve assembly to prevent the accumulated fluid from flowing back into the stomach tube. The switch valve assembly can be reused multiple times to reduce the manufacturing cost.

[0004] According to the gastrointestinal negative pressure drainage device of the embodiment of the utility model, it includes: a soft collection tube, which is provided with a cavity inside, the top of the soft collection tube is provided with an air inlet nozzle and an air outlet nozzle connected with the cavity, the air outlet nozzle is provided with a switch component, and the switch component is used to open or block the air outlet nozzle; a switch valve assembly includes a valve body and a valve core, the valve body includes a central part, a first connecting part and a second connecting part, the central part is connected between the first connecting part and the second connecting part, a cylindrical cavity and a spherical cavity connected to each other are provided in the central part, the cylindrical cavity is located above the spherical cavity, and the outer wall of the central part is provided with a valve core connected to the cylindrical cavity. A circular opening connected to the column cavity, the first connecting part is provided with a first channel connected to the spherical cavity, the air inlet nozzle is inserted into the first channel, the second connecting part is provided with a second channel connected to the spherical cavity, the second channel is used to connect with the gastric tube, the valve core includes a cylindrical part and a hemispherical part, the hemispherical part is connected to the bottom of the cylindrical part, the cylindrical part is penetrated through the circular opening and abuts against the side wall of the cylindrical cavity, the hemispherical part abuts against the side wall of the spherical cavity, the valve core is provided with a third channel, and the valve core can rotate to connect the third channel to or block the first channel and the second channel.

[0005] The gastrointestinal negative pressure drainage device according to the embodiment of the utility model has at least the following beneficial effects: by setting the switch valve assembly, the switch valve assembly can control the connection and disconnection between the cavity and the gastric tube to prevent the accumulated fluid from flowing back into the gastric tube; after the soft collecting tube is used up, the switch valve assembly can be disassembled and reused multiple times; there is no need to set a limit mechanism on the soft collecting tube, thereby reducing the manufacturing cost; during operation, specifically, the valve core can be rotated, and the valve core can control the third channel to connect or block the first channel and the second channel, wherein the first channel is connected to the cavity, and the second channel is connected to the gastric tube; the operation is simple; and the present application has no limit effect on the soft collecting tube, and the operation is relatively easy when pressing the soft collecting tube, thereby improving the use experience.

[0006] According to some embodiments of the present invention, the first channel and the second channel are cylindrical structures, and the diameter of the spherical cavity is larger than the diameter of the first channel and the second channel.

[0007] According to some embodiments of the utility model, the inner circumferential wall of the cylindrical cavity is provided with a first annular groove, and the outer circumferential wall of the cylindrical portion is provided with a first clamping ring portion, and the first clamping ring portion cooperates with the first annular groove.

[0008] According to some embodiments of the utility model, the inner peripheral wall of the first channel is provided with a second annular groove, the outer peripheral wall of the air inlet nozzle is provided with a second clamping ring portion, and the second clamping ring portion cooperates with the second annular groove.

[0009] According to some embodiments of the present invention, a handle is provided on the outer peripheral wall of the cylindrical portion.

[0010] According to some embodiments of the utility model, the gastrointestinal negative pressure drainage device includes a pressing assembly, the pressing assembly includes a first pressing piece, a second pressing piece and an elastic piece, the elastic piece connects the first pressing piece and the second pressing piece, the first pressing piece is provided with a first card slot, the second pressing piece is provided with a second card slot, the top of the soft collection tube is provided with a first boss portion extending radially outward, the first boss portion is engaged with the first card slot, the bottom of the soft collection tube is provided with a second boss portion extending radially outward, the second boss portion is engaged with the second card slot.

[0011] According to some embodiments of the utility model, the first boss portion and the second boss portion are disc-shaped, the first clamping groove and the second clamping groove are arc-shaped, the first clamping groove and the second clamping groove extend along the circumference of the first boss portion and the second boss portion, and the cross-section of the first pressing piece and the second pressing piece is semi-annular.

[0012] According to some embodiments of the utility model, a slide groove is provided on the top of the second pressing member, the elastic member is located in the slide groove, a partial structure of the first pressing member is inserted into the slide groove to abut against the elastic member, and the slide groove is used to limit the movement of the first pressing member in the up and down directions.

[0013] According to some embodiments of the utility model, the side wall of the slide groove is provided with a first limiting protrusion, and the side wall of the first pressing member is provided with a second limiting protrusion, and the first limiting protrusion cooperates with the second limiting protrusion to limit the first pressing member from leaving the slide groove.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 It is a schematic diagram of the structure of the gastrointestinal negative pressure drainage device of some embodiments of the utility model;

[0017] Figure 2 An exploded view of a switch valve assembly of a gastrointestinal negative pressure drainage device according to some embodiments of the present invention;

[0018] Figure 3 A cross-sectional view of a switch valve assembly of a gastrointestinal negative pressure drainage device according to some embodiments of the present invention;

[0019] Figure 4 A cross-sectional view of a valve body of a switch valve assembly of a gastrointestinal negative pressure drainage device according to some embodiments of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the air inlet nozzle of the soft collecting tube of the gastrointestinal negative pressure drainage device in some embodiments of the utility model;

[0021] Figure 6 An exploded view of a gastrointestinal negative pressure drainage device according to some embodiments of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the pressing assembly of the gastrointestinal negative pressure drainage device of some embodiments of the utility model;

[0023] Figure 8 An exploded view of a pressing assembly of a gastrointestinal negative pressure drainage device according to some embodiments of the present invention;

[0024] Fig. 9 A cross-sectional view of a pressing assembly of a gastrointestinal negative pressure drainage device according to some embodiments of the present invention;

[0025] Fig.10 for Fig. 9 Enlarged view of point A in the middle.

[0026] Reference numerals:

[0027] Gastrointestinal negative pressure drainage device 1000;

[0028] A flexible collecting tube 100, an air inlet nozzle 110, an air outlet nozzle 120, a first boss portion 130, and a second boss portion 140;

[0029] Switch valve assembly 200, valve body 210, central portion 211, first connection portion 212, second connection portion 213, cylindrical cavity 214, spherical cavity 215, circular opening 216, first passage 217, second passage 218, first annular groove 219, valve core 220, cylindrical portion 221, hemispherical portion 222, first clamping ring portion 223, second annular groove 224, second clamping ring portion 225, handle 226, third passage 227;

[0030] The pressing assembly 300 , the first pressing member 310 , the second pressing member 320 , the first clamping slot 330 , the second clamping slot 340 , the sliding slot 350 , the first limiting protrusion 360 , and the second limiting protrusion 370 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] Reference Figure 1 As shown, a gastrointestinal negative pressure drainage device 1000 according to an embodiment of the utility model comprises a soft collecting tube 100 and a switch valve assembly 200. The soft collecting tube 100 is made of soft rubber, which is relatively soft. The soft collecting tube 100 can be deformed. A cavity is provided inside the soft collecting tube 100. An air inlet nozzle 110 and an air outlet nozzle 120 connected to the cavity are provided at the top of the soft collecting tube 100. A switch component is provided at the air outlet nozzle 120 for opening or blocking the air outlet nozzle 120. The switch component may be a plug-like structure, and the switch component is connected to the air outlet nozzle 120.

[0033] Reference Figures 1 to 4 As shown, the switch valve assembly 200 includes a valve body 210 and a valve core 220. The valve body 210 includes a central portion 211, a first connecting portion 212 and a second connecting portion 213. The first connecting portion 212 and the second connecting portion 213 are cylindrical structures, and the central portion 211 is a spherical structure. The central portion 211 is connected between the first connecting portion 212 and the second connecting portion 213. A cylindrical cavity 214 and a spherical cavity 215 that are interconnected are provided in the central portion 211. The cylindrical cavity 214 is a cylindrical structure, and the spherical cavity 215 is a spherical structure. The cylindrical cavity 214 is located above the spherical cavity 215. The outer wall of the central portion 211 is provided with a circular cavity 214 that is connected to the cylindrical cavity 214. The first connection part 212 is provided with a first channel 217 communicating with the spherical cavity 215, the air inlet nozzle 110 is inserted into the first channel 217, the second connection part 213 is provided with a second channel 218 communicating with the spherical cavity 215, the second channel 218 is used to connect with the gastric tube, the valve core 220 includes a cylindrical part 221 and a hemispherical part 222, the hemispherical part 222 is connected to the bottom of the cylindrical part 221, the cylindrical part 221 is penetrated through the circular opening 216 and abuts against the side wall of the cylindrical cavity 214, the hemispherical part 222 abuts against the side wall of the spherical cavity 215, the diameter of the cylindrical cavity 214 is greater than or equal to the diameter of the spherical cavity 215, so as to facilitate the installation of the valve core 220. The valve core 220 is provided with a third channel 227, and the valve core 220 can rotate so that the third channel 227 connects or blocks the first channel 217 and the second channel 218.

[0034] In some embodiments, a spring is disposed inside the soft collecting tube 100 , and the spring can support the soft collecting tube 100 .

[0035] Specifically, when in use, the air inlet nozzle 110 is inserted into the first channel 217, the stomach tube is inserted into the second channel 218, and the valve core 220 is rotated so that the third channel 227 blocks the first channel 217 and the second channel 218, that is, the cavity of the soft collection tube 100 is not connected to the stomach tube, and then the switch at the air outlet nozzle 120 is opened, and then the soft collection tube 100 is pressed to reduce the volume of the cavity of the soft collection tube 100, and then the switch at the air outlet nozzle 120 is closed, and the valve core 220 is rotated again. , so that the third channel 227 is connected to the first channel 217 and the second channel 218, that is, the cavity of the soft collection tube 100 is connected to the stomach tube, and then the soft collection tube 100 is released, the spring in the soft collection tube 100 is gradually expanded, the soft collection tube 100 is opened, and the volume of the cavity of the soft collection tube 100 becomes larger, thereby generating negative pressure, absorbing the accumulated fluid and gas in the patient's gastrointestinal tract through the stomach tube, and collecting them in the soft collection tube 100, and then continue to repeat the above steps, and the accumulated fluid and gas can be repeatedly absorbed. In this process, it can be avoided that the accumulated fluid flows back from the air inlet nozzle 110 into the patient's body when the soft collection tube 100 is pressed, and the switch valve assembly 200 can be disassembled and reused repeatedly. A single switch valve assembly 200 can be used with multiple disposable press-sensitive soft collection tubes 100, which can reduce the manufacturing cost.

[0036] In some embodiments, the switch element at the air outlet nozzle 120 may be a switch valve assembly 200 .

[0037] Reference Figure 4 As shown, according to some embodiments of the utility model, the first channel 217 and the second channel 218 are cylindrical structures, and the diameter of the spherical cavity 215 is larger than the diameter of the first channel 217 and the second channel 218, which can ensure that when the valve core 220 is in a closed state, the valve core 220 can completely block the first channel 217 and the second channel 218, and the gap is small to prevent liquid from passing through.

[0038] Reference Figure 2 and Figure 4 As shown, according to some embodiments of the utility model, the valve core 220 is made of plastic, the inner peripheral wall of the cylindrical cavity 214 is provided with a first annular groove 219, and the outer peripheral wall of the cylindrical portion 221 is provided with a first clamping ring portion 223, and the first clamping ring portion 223 cooperates with the first annular groove 219. When the valve core 220 is installed into the cylindrical cavity 214 and the spherical cavity 215, a little force can be applied to make the first clamping ring portion 223 engage with the first annular groove 219, thereby fixing the valve core 220, which is convenient to install. When disassembling, the valve core 220 can be disassembled by applying a little force, which can facilitate cleaning of the cylindrical cavity 214 and the spherical cavity 215 inside.

[0039] Reference Figure 4 and Figure 5As shown, according to some embodiments of the present invention, the inner peripheral wall of the first channel 217 is provided with a second annular groove 224, and the outer peripheral wall of the air inlet nozzle 110 is provided with a second clamping ring portion 225, and the second clamping ring portion 225 cooperates with the second annular groove 224. The air inlet nozzle 110 is made of soft rubber, and the second clamping ring portion 225 can be easily engaged with the second annular groove 224, thereby ensuring the stability of the switch valve assembly 200 and the air inlet nozzle 110 and improving the sealing performance.

[0040] Reference Figure 2 As shown, according to some embodiments of the present invention, a handle 226 is provided on the outer peripheral wall of the cylindrical portion 221 to facilitate the rotation of the valve core 220 .

[0041] It is understandable that, currently, a spring is generally provided in the soft collection tube 100. After the soft collection tube 100 is pressed, the spring resets and opens the soft collection tube 100. However, since the soft collection tube 100 is a disposable item and must be discarded after each use, it is wasteful to provide a spring inside the soft collection tube 100, which will increase the manufacturing cost and may also cause pollution to the environment.

[0042] Based on this, refer to Figure 1 and Figure 6 As shown, according to some embodiments of the utility model, the gastrointestinal negative pressure drainage device 1000 includes a pressing assembly 300, and the pressing assembly 300 includes a first pressing piece 310, a second pressing piece 320 and an elastic piece, the elastic piece connecting the first pressing piece 310 and the second pressing piece 320, when the first pressing piece 310 and the second pressing piece 320 are pressed by both hands, the elastic piece is compressed, the first pressing piece 310 is provided with a first card groove 330, the second pressing piece 320 is provided with a second card groove 340, the top of the soft collection tube 100 is provided with a first boss portion 130 extending radially outward, the first boss portion 130 is clamped with the first card groove 330, and the bottom of the soft collection tube 100 is provided with a second boss portion 140 extending radially outward, and the second boss portion 140 is clamped with the second card groove 340.

[0043] When using, refer to Figure 6 As shown, along the direction of the arrow, the first boss portion 130 is inserted into the first slot 330, and the second boss portion 140 is inserted into the second slot 340. Then, by pressing the pressing assembly 300, the soft collecting tube 100 can be driven to shrink or expand. One pressing assembly 300 can be used with multiple soft collecting tubes 100 for repeated use. There is no need to set a spring in the soft collecting tube 100, which can reduce manufacturing costs, avoid waste, and avoid pollution to the environment. In addition, the material used for the first boss portion 130 and the second boss portion 140 is also less.

[0044] Reference Figures 6 to 8As shown, according to some embodiments of the utility model, the first boss portion 130 and the second boss portion 140 are in a disc shape, the first clamping groove 330 and the second clamping groove 340 are in an arc shape, the first clamping groove 330 and the second clamping groove 340 extend along the circumference of the first boss portion 130 and the second boss portion 140, and the cross-section of the first pressing member 310 and the second pressing member 320 is in a semi-annular shape. In this way, the first pressing member 310 and the second pressing member 320 are in a semi-open structure, which can conveniently connect the soft collection tube 100 with the pressing assembly 300, reducing the operation time.

[0045] Reference Figure 8 As shown, according to some embodiments of the utility model, a slide groove 350 is provided on the top of the second pressing member 320, and the slide groove 350 is arc-shaped. The elastic member is located in the slide groove 350, which can prevent the elastic member from being exposed to the outside and protect the elastic member. Part of the structure of the first pressing member 310 is inserted into the slide groove 350 to abut against the elastic member. The slide groove 350 is used to limit the movement of the first pressing member 310 in the up and down directions to prevent the first pressing member 310 from running off.

[0046] Reference Fig. 9 As shown, according to some embodiments of the utility model, the side wall of the chute 350 is provided with a first limiting protrusion 360, and the side wall of the first pressing member 310 is provided with a second limiting protrusion 370, and the first limiting protrusion 360 cooperates with the second limiting protrusion 370 to limit the first pressing member 310 from being separated from the chute 350. When the first pressing member 310 and the second pressing member 320 are installed, a slight force can be applied to the first pressing member 310 so that the first limiting protrusion 360 passes over the second limiting protrusion 370, and the first limiting protrusion 360 is located below the second limiting protrusion 370. At this time, it is difficult for the first limiting protrusion 360 to pass over the second limiting protrusion 370 upwards, which plays a role in limiting the first pressing member 310 and preventing the first pressing member 310 from being separated from the second pressing member 320.

[0047] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the utility model, if there is a description of first or second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0050] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. Finally, it should be explained that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A gastrointestinal negative pressure drainage device, characterized in that: include: A soft collecting tube, with a cavity inside, an air inlet nozzle and an air outlet nozzle connected to the cavity are arranged on the top of the soft collecting tube, and a switch is arranged at the air outlet nozzle, and the switch is used to open or block the air outlet nozzle; The switch valve assembly comprises a valve body and a valve core, the valve body comprises a central part, a first connecting part and a second connecting part, the central part is connected between the first connecting part and the second connecting part, a cylindrical cavity and a spherical cavity which are connected to each other are provided in the central part, the cylindrical cavity is located above the spherical cavity, an outer wall of the central part is provided with a circular opening which is connected to the cylindrical cavity, the first connecting part is provided with a first channel which is connected to the spherical cavity, the air inlet nozzle is inserted into the first channel, the second connecting part is provided with a second channel which is connected to the spherical cavity, the second channel is used to connect to a gastric tube, the valve core comprises a cylindrical part and a hemispherical part, the hemispherical part is connected to the bottom of the cylindrical part, the cylindrical part is penetrated through the circular opening and abuts against the side wall of the cylindrical cavity, the hemispherical part abuts against the side wall of the spherical cavity, the valve core is provided with a third channel, and the valve core can rotate so that the third channel connects or blocks the first channel and the second channel.

2. The gastrointestinal negative pressure drainage device according to claim 1, characterized in that: The first channel and the second channel are cylindrical structures, and the diameter of the spherical cavity is larger than the diameter of the first channel and the second channel.

3. The gastrointestinal negative pressure drainage device according to claim 1, characterized in that: The inner peripheral wall of the cylindrical cavity is provided with a first annular groove, and the outer peripheral wall of the cylindrical part is provided with a first clamping ring part, and the first clamping ring part cooperates with the first annular groove.

4. The gastrointestinal negative pressure drainage device according to claim 1, characterized in that: The inner peripheral wall of the first channel is provided with a second annular groove, the outer peripheral wall of the air inlet nozzle is provided with a second clamping ring portion, and the second clamping ring portion cooperates with the second annular groove.

5. The gastrointestinal negative pressure drainage device according to claim 1, characterized in that: A handle is provided on the outer peripheral wall of the cylindrical portion.

6. The gastrointestinal negative pressure drainage device according to claim 1, characterized in that: The gastrointestinal negative pressure drainage device includes a pressing assembly, which includes a first pressing piece, a second pressing piece and an elastic piece, the elastic piece connects the first pressing piece and the second pressing piece, the first pressing piece is provided with a first clamping groove, the second pressing piece is provided with a second clamping groove, the top of the soft collection tube is provided with a first boss portion extending radially outward, the first boss portion is clamped with the first clamping groove, the bottom of the soft collection tube is provided with a second boss portion extending radially outward, the second boss portion is clamped with the second clamping groove.

7. The gastrointestinal negative pressure drainage device according to claim 6, characterized in that: The first boss portion and the second boss portion are disc-shaped, the first clamping groove and the second clamping groove are arc-shaped, the first clamping groove and the second clamping groove extend along the circumference of the first boss portion and the second boss portion, and the cross-section of the first pressing member and the second pressing member is semi-annular.

8. The gastrointestinal negative pressure drainage device according to claim 6, characterized in that: A slide groove is provided on the top of the second pressing member, the elastic member is located in the slide groove, a part of the structure of the first pressing member is inserted into the slide groove to abut against the elastic member, and the slide groove is used to limit the first pressing member from moving in the up and down directions.

9. The gastrointestinal negative pressure drainage device according to claim 8, characterized in that: The side wall of the slide groove is provided with a first limiting protrusion, and the side wall of the first pressing member is provided with a second limiting protrusion, and the first limiting protrusion cooperates with the second limiting protrusion to limit the first pressing member from leaving the slide groove.

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