Negative pressure drainage bottle

Abstract

A negative pressure drainage bottle comprises a drainage bottle body, an inner cavity of the drainage bottle body forms a liquid storage cavity, the drainage bottle body is further provided with a drainage connector and a negative pressure connector which are used for being connected with an external drainage tube and a negative pressure device respectively, the drainage connector is communicated with the liquid storage cavity, and the negative pressure connector is communicated with a first ventilation tube located in the liquid storage cavity. At least two second ventilation pipes extend outwards from the side part of the first ventilation pipe in the radial direction, the pipe lengths of the second ventilation pipes are different, and at least part of pipe openings of the second ventilation pipes are located on the upper layer and the lower layer of the liquid storage cavity; a waterproof breathable film is arranged at the opening of each second vent pipe, or a waterproof breathable film is arranged in a pipeline, leading to the negative pressure device, of the opening of each second vent pipe. Due to the arrangement of the first ventilation pipe and the plurality of second ventilation pipes, when the drainage bottle which is not full of the seepage liquid is toppled over, at least one second ventilation pipe can be communicated with the liquid storage cavity and the negative pressure device to conduct negative pressure conduction, the interior of the bottle is in a negative pressure state all the time, and drainage is not interrupted due to toppling over.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, and in particular to a negative pressure drainage bottle. Background Art

[0002] Surgical drainage is an important medical method for draining fluids (including blood, pus, inflammatory exudates, bile, secretions, etc.) accumulated in body cavities, joints, organs or tissues away from their original locations and out of the body to prevent accumulation in the body cavity or surgical field and subsequent damage to the human body. With the development of surgical drainage technology, active drainage, namely negative pressure drainage, has been increasingly adopted in the medical field. Negative pressure drainage is a drainage method that uses an external negative pressure source to form negative pressure to extract the fluid to be drained. It is increasingly widely used in general surgery, orthopedics, burns and other fields.

[0003] The negative pressure drainage bottle is an important device for negative pressure drainage. There are two interfaces on the top of the bottle body that are connected to the inside of the bottle body, one for connecting the drainage tube, and the other for connecting the negative pressure source. Its function is to hold the liquid to be drained, and it is an indispensable medical device for negative pressure drainage. During use, the negative pressure equipment and the drainage bottle must be placed on a flat surface. If it is tipped over and not immediately picked up, the following problems may occur: (1) The negative pressure interface of the drainage bottle is blocked by the liquid, the air pressure cannot be transmitted, the negative pressure in the bottle disappears, and drainage cannot continue; (2) The liquid in the drainage bottle enters the negative pressure equipment through the pipeline or channel, causing contamination or damage to the device. In short, the existing negative pressure drainage bottle is forced to interrupt drainage after tipping over, and cannot continue to be used normally. Summary of the invention

[0004] In view of the shortcomings of the background technology, the purpose of the present invention is to provide a negative pressure drainage bottle.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A negative pressure drainage bottle comprises a drainage bottle body, wherein the internal chamber of the drainage bottle body constitutes a liquid storage chamber, the drainage bottle body is further provided with a drainage interface and a negative pressure interface, which are respectively used to connect an external drainage tube and a negative pressure device, the drainage interface is connected to the liquid storage chamber, the negative pressure interface is connected to a first ventilation tube located in the liquid storage chamber, at least two second ventilation tubes are extended outwardly from the side of the first ventilation tube along its radial direction, the tube lengths of each second ventilation tube are different, and at least part of the tube openings of the second ventilation tubes are located in the upper and lower layers of the liquid storage chamber; each second ventilation tube tube opening is provided with a waterproof and breathable membrane, or each second ventilation tube tube opening leading to the negative pressure device is provided with a waterproof and breathable membrane in the pipeline.

[0007] Furthermore, the drainage bottle body includes a front shell and a rear shell that are sealed and connected to each other. When the front shell and the rear shell are connected, their internal chambers constitute the liquid storage chamber. The first ventilation tube is arranged between the front shell and the rear shell. The side portion of the first ventilation tube has at least one second ventilation tube extending radially toward the direction close to the front shell and the rear shell respectively.

[0008] Furthermore, the drainage bottle body includes a front shell and a rear shell that are sealed and connected to each other. When the front shell and the rear shell are connected, their internal chambers constitute the liquid storage chamber. One of the front shell or the rear shell is provided with the first ventilation tube along its own height direction, and at least two second ventilation tubes are extended from the side of the first ventilation tube in a direction close to the other one.

[0009] Furthermore, the length of at least one of the second ventilation pipes is 1 / 10 to 1 / 5 of the distance between the inner walls of the front shell and the rear shell; at the same time, the length of at least one of the second ventilation pipes is 4 / 5 to 9 / 10 of the distance between the inner walls of the front shell and the rear shell.

[0010] Furthermore, the distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the top wall of the liquid storage chamber is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber; at the same time, the distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the bottom wall of the liquid storage chamber is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber.

[0011] Furthermore, the distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the left end of the liquid storage chamber is 1 / 10 to 1 / 5 of the width of the front shell or the rear shell; at the same time, the distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the right end of the liquid storage chamber is 1 / 10 to 1 / 5 of the width of the front shell or the rear shell.

[0012] Furthermore, it also includes a negative pressure connecting pipe, and the negative pressure interface is connected to the negative pressure device through the negative pressure connecting pipe.

[0013] Furthermore, a sealing sheet is provided on a side of the rear shell away from the front shell, and the sealing sheet covers the back side of the first channel and each of the second channels.

[0014] Furthermore, a liquid level scale is provided on the outer surface of the front shell.

[0015] Furthermore, a lifting lug is provided on the top of the front shell or the rear shell.

[0016] The beneficial effects of the present invention are:

[0017] 1. A negative pressure drainage bottle proposed in the present invention comprises a drainage bottle body, the internal chamber of the drainage bottle body constitutes a liquid storage chamber, the drainage bottle body is further provided with a drainage interface and a negative pressure interface, which are respectively used to connect an external drainage tube and a negative pressure device, the drainage interface is connected to the liquid storage chamber, the negative pressure interface is connected to a first ventilation tube located in the liquid storage chamber, at least two second ventilation tubes are extended outward along the radial direction of the side of the first ventilation tube, the tube lengths of each second ventilation tube are different, and at least part of the tube openings of the second ventilation tubes are located in the upper layer and the lower layer of the liquid storage chamber; the tube openings of each second ventilation tube are provided with a waterproof and breathable membrane, or the pipes from the tube openings of each second ventilation tube to the negative pressure device are provided with a waterproof and breathable membrane. The first ventilation tube and multiple second ventilation tubes are arranged so that when the drainage bottle with insufficient exudate storage is tipped over, at least one second ventilation tube can connect the liquid storage chamber and the negative pressure device to conduct negative pressure, so that the bottle is always in a negative pressure state and the drainage is not interrupted due to tipping over; the waterproof and breathable membrane is arranged to prevent the wound exudate in the drainage bottle from entering the negative pressure device through the corresponding pipe, thereby avoiding contamination or damage to the negative pressure device.

[0018] 2. A negative pressure drainage bottle proposed by the present invention has a liquid level scale on the outer surface of the front shell, and the setting of the liquid level scale makes it easy to know the current drainage volume; a hanging ear is provided on the top of the front shell or the rear shell, and the setting of the hanging ear makes it easy to hang the drainage bottle body to a designated position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of a first embodiment of a negative pressure drainage bottle of the present invention;

[0021] Figure 2 This is an exploded view of a first embodiment of a negative pressure drainage bottle of the present invention;

[0022] Figure 3 This is one of the front schematic diagrams of the rear housing of the first embodiment;

[0023] Figure 4 The second schematic diagram of the front side of the rear housing of the first embodiment;

[0024] Figure 5 It is a schematic diagram of the back side of the rear shell of the first embodiment;

[0025] Figure 6 This is one of the use demonstration diagrams of the first embodiment of a negative pressure drainage bottle of the present invention;

[0026] Figure 7 This is a second use demonstration diagram of the first embodiment of a negative pressure drainage bottle of the present invention;

[0027] Figure 8 This is a third use demonstration diagram of the first embodiment of a negative pressure drainage bottle of the present invention;

[0028] Fig. 9 This is a fourth use demonstration diagram of the first embodiment of a negative pressure drainage bottle of the present invention;

[0029] Fig.10 This is a usage demonstration diagram of the second embodiment of a negative pressure drainage bottle of the present invention;

[0030] In the figure, 10, drainage bottle body; 101, liquid storage chamber; 102, front shell; 103, rear shell; 201, drainage interface; 202, negative pressure interface; 203, negative pressure device; 301, first ventilation pipe; 302, high-position second ventilation pipe; 303, low-position second ventilation pipe; 304, waterproof breathable membrane; 40, negative pressure connecting pipe; 50, sealing sheet; 60, buckle plate; 70, liquid level scale; 80, lifting ear. DETAILED DESCRIPTION

[0031] Combine the following Figure 1-Figure 10 The present invention is described in detail.

[0032] Embodiment 1

[0033] A negative pressure drainage bottle comprises a drainage bottle body 10, wherein the internal chamber of the drainage bottle body 10 constitutes a liquid storage chamber 101, and the drainage bottle body 10 is further provided with a drainage interface 201 and a negative pressure interface 202, which are respectively used to connect an external drainage tube and a negative pressure device 203, wherein the drainage interface 201 is connected to the liquid storage chamber 101, and the negative pressure interface 202 is connected to a first ventilation tube 301 located in the liquid storage chamber 101, and at least two second ventilation tubes are extended outward from the side of the first ventilation tube 301 along its radial direction, wherein the tube lengths of the second ventilation tubes are different, and at least part of the tube openings of the second ventilation tubes are located in the upper and lower layers of the liquid storage chamber 101; a waterproof and breathable membrane 304 is provided at the tube openings of the second ventilation tubes, or a waterproof and breathable membrane 304 is provided in the pipeline from the tube openings of the second ventilation tubes to the negative pressure device 203. The first ventilation tube 301 and the plurality of second ventilation tubes are provided, when the drainage bottle with insufficient exudate storage falls over, at least one second ventilation tube can connect the liquid storage chamber 101 and the negative pressure device 203 to conduct negative pressure, so that the bottle is always in a negative pressure state, and the drainage is not interrupted due to the fall; the waterproof breathable membrane 304 is provided to prevent the wound exudate in the drainage bottle from entering the negative pressure device 203 through the corresponding pipeline, thereby avoiding contamination or damage to the negative pressure device 203. Specifically, the drainage bottle body 10 is made of transparent or translucent material, which is convenient for observing the internal drainage situation. The specific material is referred to the prior art, which will not be described here; the composition and principle of the waterproof breathable membrane 304 belong to the prior art, which will not be described here; the waterproof breathable membrane 304 is provided at the pipe opening of the second ventilation tube.

[0034] There are two situations in which the negative pressure interface 202 is connected to the first ventilation tube 301 located in the liquid storage chamber 101. One is that the first ventilation tube 301 is arranged on the cavity wall of the liquid storage chamber 101 (i.e., the front shell 102 or the rear shell 103 below); the other is that the first ventilation tube 301 is arranged between the front shell 102 and the rear shell 103, for example, in the middle of the liquid storage chamber 101, see Example 2 for details.

[0035] In this embodiment, the drainage bottle body 10 includes a front shell 102 and a rear shell 103 that are sealed and connected to each other. After the front shell 102 and the rear shell 103 are connected, their internal chambers constitute a liquid storage chamber 101. One of the front shell 102 or the rear shell 103 is provided with a first ventilation tube 301 along its own height direction, and the side of the first ventilation tube 301 is extended with at least two second ventilation tubes in a direction close to the other. Specifically, the drainage interface 201 is arranged at the top of the front shell 102, and the negative pressure interface 202 is arranged at the top of the rear shell 103. The chamber enclosed by the front shell 102 and the rear shell 103 is the liquid storage chamber 101; the sealing connection method between the front shell 102 and the rear shell 103 refers to the existing technology, such as welding and buckling, and a sealing ring can be added; the first ventilation pipe 301 is arranged on the side of the rear shell 103 close to the front shell 102; the shape of the pipe mouth of the second ventilation pipe can be square, circular, or other polygons, and the relationship between the second ventilation pipe and the horizontal plane can be parallel, inclined, or perpendicular to the horizontal plane.

[0036] In this embodiment, the length of at least one second ventilation pipe is 1 / 10 to 1 / 5 of the distance between the inner side walls of the front shell 102 and the rear shell 103; at the same time, the length of at least one second ventilation pipe is 4 / 5 to 9 / 10 of the distance between the inner side walls of the front shell 102 and the rear shell 103. Figure 1-Figure 3 , Figure 6-Figure 7 As shown, the lengths, i.e., depths, of the two second ventilation pipes are different. In this embodiment, the second ventilation pipe located at an upper position and having a longer length is called a high-position second ventilation pipe 302, and the second ventilation pipe located at a lower position and having a shorter length is called a low-position second ventilation pipe 303.

[0037] like Figure 6 (The wavy line in each figure represents the liquid level). When the drainage bottle body 10 tilts forward and the front shell 102 is pressed downward by the rear shell 103 and the negative pressure device 203, the liquid level in the drainage bottle overflows the pipe opening of the high second ventilation pipe 302, but does not overflow the pipe opening of the low second ventilation pipe 303. Therefore, the liquid storage chamber 101 and the external negative pressure device 203 can be connected through the pipe opening of the low second ventilation pipe 303 to conduct negative pressure. Figure 7 When the drainage bottle body 10 tilts backward and the negative pressure device 203 is pressed downward by the front shell 102 and the rear shell 103, the liquid level in the drainage bottle overflows the tube opening of the low-position second ventilation tube 303, but does not overflow the tube opening of the high-position second ventilation tube 302. Therefore, the liquid storage chamber 101 and the external negative pressure device 203 can be connected through the tube opening of the high-position second ventilation tube 302 for negative pressure conduction.

[0038] Taking into account the possibility of tipping when the liquid level is very high, the length of the second ventilation pipe can be set longer or shorter according to usage requirements.

[0039] In this embodiment, the distance between at least a part of the pipe opening of at least one second ventilation tube and the top wall of the liquid storage chamber 101 is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber 101; at the same time, the distance between at least a part of the pipe opening of at least one second ventilation tube and the bottom wall of the liquid storage chamber 101 is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber 101.

[0040] Specifically, Figure 4As shown, the distance between the highest point of the pipe opening of the high second vent pipe 302 and the top wall of the liquid storage chamber 101 is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber 101, and the distance between the lowest point of the pipe opening of the low second vent pipe 303 and the bottom wall of the liquid storage chamber 101 is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber 101. For example, if the distance between the top wall and the bottom wall of the liquid storage chamber 101 (i.e., the height of the drainage bottle body 10 minus the thickness of the upper and lower shells) is 15 cm, then the distance between the highest point of the pipe opening of the high second vent pipe 302 and the top wall of the liquid storage chamber 101 is 0.75 cm-1.5 cm, and the distance between the lowest point of the pipe opening of the low second vent pipe 303 and the bottom wall of the liquid storage chamber 101 is 0.75 cm-1.5 cm of the distance between the top wall and the bottom wall of the liquid storage chamber 101. Such an arrangement enables the drainage bottle body 10 to be placed upright on a plane. Figure 8 As shown, the liquid level in the drainage bottle completely overflows the tube opening of the lower second ventilation tube 303, but does not completely overflow the tube opening of the upper second ventilation tube 302, so the liquid storage chamber 101 and the external negative pressure device 203 can be connected through the tube opening of the upper second ventilation tube 302 to conduct negative pressure; when the drainage bottle body 10 is tilted and forced to be placed upside down, as shown in FIG. Fig. 9 As shown, the liquid level in the drainage bottle completely overflows the tube opening of the high second ventilation tube 302, but does not completely overflow the tube opening of the low second ventilation tube 303. Therefore, the liquid storage chamber 101 and the external negative pressure device 203 can be connected through the tube opening of the low second ventilation tube 303 for negative pressure conduction.

[0041] Taking into account the possibility of tipping when the liquid level is very high, the distance between at least part of the nozzle of the second ventilation pipe and the top wall or bottom wall of the liquid storage chamber 101 can be set to be shorter according to usage requirements.

[0042] In this embodiment, the distance between at least a portion of the pipe opening of at least one second ventilation pipe and the left end of the liquid storage chamber 101 is 1 / 10 to 1 / 5 of the width of the front shell 102 or the rear shell 103; at the same time, the distance between at least a portion of the pipe opening of at least one second ventilation pipe and the right end of the liquid storage chamber 101 is 1 / 10 to 1 / 5 of the width of the front shell 102 or the rear shell 103. Specifically, Figure 4As shown, the distance between the leftmost end of the pipe opening of the high second vent pipe 302 and the left end of the liquid storage chamber 101 is 1 / 10 to 1 / 5 of the width of the front shell 102 or the rear shell 103, and the distance between the rightmost end of the pipe opening of the low second vent pipe 303 and the right end of the liquid storage chamber 101 is 1 / 10 to 1 / 5 of the width of the front shell 102 or the rear shell 103. In this way, when the drainage bottle body 10 tilts to the left or to the right, at least one of the pipe openings of the second vent pipe is not completely flooded by the liquid. Considering the situation that the liquid level tilts when it is very high, the distance between at least part of the pipe opening of the second vent pipe and the left or right end of the liquid storage chamber 101 can be set to be shorter, which can be set according to the use requirements.

[0043] In this embodiment, a negative pressure connecting pipe 40 is further included, and the negative pressure interface 202 is connected to the negative pressure device 203 through the negative pressure connecting pipe 40 .

[0044] In this embodiment, a sealing sheet 50 is provided on a side of the rear shell 103 away from the front shell 102 , and the sealing sheet 50 covers the back side of the first channel and each second channel.

[0045] In this embodiment, a plurality of buckle plates 60 are provided on a side of the rear shell 103 away from the front shell 102 for buckling the negative pressure device 203 .

[0046] In this embodiment, a liquid level scale 70 is disposed on the outer surface of the front shell 102 .

[0047] In this embodiment, a lifting ear 80 is provided on the top of the front shell 102 or the rear shell 103. Specifically, the lifting ear 80 is provided on the top of the rear shell 103.

[0048] Embodiment 2

[0049] like Fig.10 As shown, in this embodiment, a first ventilation pipe 301 is provided between the front shell 102 and the rear shell 103 , and at least one second ventilation pipe is extended from the side of the first ventilation pipe 301 along its radial direction toward the front shell 102 and the rear shell 103 .

[0050] Embodiment 2 The difference between this embodiment and embodiment 1 is that the position of the first ventilation tube 301 in the liquid storage chamber 101 is different, resulting in different extension direction and extension length (ie, tube length) of the second ventilation tube. Embodiment 2 is the same as embodiment 1 except for this content.

[0051] The negative pressure drainage bottle proposed by the present invention has the following working principle:

[0052] When in use, the drainage interface 201 of the drainage bottle body 10 is connected to the external drainage tube, and the negative pressure interface 202 is connected to the external negative pressure device 203 through the negative pressure connecting tube 40. The negative pressure device 203 starts to work to put the liquid storage chamber 101 in a negative pressure state, and the liquid to be drained is introduced into the liquid storage chamber 101 through the back of the drainage tube. When tipping occurs, at least one second ventilation tube can connect the liquid storage chamber 101 and the negative pressure device 203 to conduct negative pressure, so that the bottle is always in a negative pressure state and the drainage is not interrupted due to tipping.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative pressure drainage bottle, characterized in that: The invention comprises a drainage bottle body, the internal chamber of which constitutes a liquid storage chamber, the drainage bottle body is further provided with a drainage interface and a negative pressure interface, which are respectively used to connect an external drainage tube and a negative pressure device, the drainage interface is connected with the liquid storage chamber, the negative pressure interface is connected with a first ventilation tube located in the liquid storage chamber, at least two second ventilation tubes are extended outwardly along the radial direction of the side of the first ventilation tube, the tube lengths of each of the second ventilation tubes are different, and at least part of the tube openings of the second ventilation tubes are located in the upper and lower layers of the liquid storage chamber; the tube openings of each of the second ventilation tubes are provided with a waterproof and breathable membrane, or the pipes from the tube openings of each of the second ventilation tubes to the negative pressure device are provided with a waterproof and breathable membrane.

2. A negative pressure drainage bottle as claimed in claim 1, characterized in that: The drainage bottle body includes a front shell and a rear shell that are sealed and connected to each other. When the front shell and the rear shell are connected, their internal chambers constitute the liquid storage chamber. The first ventilation tube is arranged between the front shell and the rear shell. The side portion of the first ventilation tube has at least one second ventilation tube extending radially toward the direction close to the front shell and the rear shell.

3. A negative pressure drainage bottle as claimed in claim 1, characterized in that: The drainage bottle body includes a front shell and a rear shell that are sealed and connected to each other. When the front shell and the rear shell are connected, their internal chambers constitute the liquid storage chamber. One of the front shell or the rear shell is provided with the first ventilation tube along its own height direction, and at least two second ventilation tubes extend from the side of the first ventilation tube in a direction close to the other.

4. A negative pressure drainage bottle as claimed in claim 3, characterized in that: The length of at least one of the second ventilation pipes is 1 / 10 to 1 / 5 of the distance between the inner walls of the front shell and the rear shell; at the same time, the length of at least one of the second ventilation pipes is 4 / 5 to 9 / 10 of the distance between the inner walls of the front shell and the rear shell.

5. A negative pressure drainage bottle as claimed in claim 4, characterized in that: The distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the top wall of the liquid storage chamber is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber; at the same time, the distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the bottom wall of the liquid storage chamber is 1 / 20 to 1 / 10 of the distance between the top wall and the bottom wall of the liquid storage chamber.

6. A negative pressure drainage bottle as claimed in claim 5, characterized in that: The distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the left end of the liquid storage chamber is 1 / 10 to 1 / 5 of the width of the front shell or the rear shell; at the same time, the distance between at least a part of the pipe opening of at least one of the second ventilation pipes and the right end of the liquid storage chamber is 1 / 10 to 1 / 5 of the width of the front shell or the rear shell.

7. A negative pressure drainage bottle as claimed in claim 1, characterized in that: It also includes a negative pressure connecting pipe, and the negative pressure interface is connected to the negative pressure device through the negative pressure connecting pipe.

8. A negative pressure drainage bottle as claimed in claim 2 or 3, characterized in that: A sealing sheet is provided on a side of the rear shell away from the front shell, and the sealing sheet covers the back sides of the first channel and each of the second channels.

9. A negative pressure drainage bottle as claimed in claim 2 or 3, characterized in that: The outer surface of the front shell is provided with a liquid level scale.

10. A negative pressure drainage bottle as claimed in claim 2 or 3, characterized in that: A hanging ear is arranged on the top of the front shell or the rear shell.

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