Time-sharing segmented metering and collecting negative pressure drainage tank

Abstract

The utility model relates to the technical field of medical instruments, in particular to a time-sharing segmented metering and collecting negative pressure drainage tank which comprises a drainage tank body (1) which is a hollow tank body, a drainage sampling groove (4) is formed in the inner wall of the drainage tank body, a sampling valve (2) is arranged on the outer wall of the drainage tank body, and the drainage sampling groove (4) is communicated with the sampling valve (2). The sealing cover (7) is provided with a drainage hole (81) allowing the drainage tube (8) to penetrate through and a negative pressure hole (101) allowing the negative pressure tube (10) to penetrate through. And the medical staff can conveniently collect the secretes in different time periods for detection. A plurality of drainage sampling grooves are distributed on the inner wall of the transparent negative pressure drainage tank, and the drainage tank can be aligned to the drainage tank body or the drainage sampling grooves by rotating the sealing cover, so that time-sharing and batch metering and sampling are realized.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a negative pressure drainage tank that can perform batch sampling. Background Technology

[0002] Negative pressure drainage is a modern medical technique primarily used for postoperative wound care and treatment. Its origins can be traced back to the 1960s, initially used for closed thoracic drainage. With the continuous development of medical technology, negative pressure drainage has gradually been applied to other fields, such as abdominal surgery, burn treatment, and plastic surgery. The basic principle of negative pressure drainage is to use a negative pressure pump to generate negative pressure, which is then used to drain tissue fluid, blood, and other bodily fluids from the wound or surgical site through a drainage tube, thereby reducing local fluid accumulation and swelling and promoting wound healing.

[0003] With the development of materials science and biomedical engineering, negative pressure drainage technology has evolved from open to closed systems, from single-cavity to multi-cavity systems, and from manual to automated methods. Modern negative pressure drainage devices are more user-friendly and intelligent, better meeting clinical needs. Currently, negative pressure drainage technology is still under continuous research and improvement, including the development of new materials, optimization of drainage devices, and evaluation of clinical application effects. The application of negative pressure drainage technology has greatly improved the quality of postoperative wound care and shortened patient recovery time, representing one of the important achievements of modern medicine. Among these technologies, negative pressure drainage cups are one of the most important forms of negative pressure drainage.

[0004] Existing technologies such as CN105013029B (disclosing an anti-backflow negative pressure drainage bottle and its constituent negative pressure drainage device), CN103263700B (disclosing a disposable negative pressure drainage canister), and CN102641524B (disclosing an adjustable negative pressure continuous drainage system) are all single negative pressure drainage devices, unable to accurately calculate the suction flow rate at different time periods, nor conveniently collect secretions at different time periods for testing. The negative pressure drainage canister provided by this invention not only accurately calculates the suction flow rate at different time periods but also more conveniently collects secretions in batches at different time periods for testing, solving a new clinical pain point. Furthermore, currently available negative pressure drainage canisters used in the market, in actual clinical practice, or reported in the literature cannot achieve time-segmented measurement and collection, and there is a risk of incomplete sealing. This invention solves the air leakage problem of the negative pressure canister, ensuring a strict seal. Utility Model Content

[0005] In view of the above-mentioned technical status, this utility model provides a negative pressure drainage tank that can sample in batches, specifically a negative pressure drainage tank that can measure and collect data in time segments.

[0006] The negative pressure drainage tank of this utility model includes a drainage tank body and a sealing cover. The drainage tank body is a hollow tank body with a drainage sampling groove on the inner wall and a sampling valve on the outer wall. The drainage sampling groove and the sampling valve are connected.

[0007] The sealing cap is provided with a drainage hole (81) through which the drainage tube passes and a negative pressure hole (101) through which the negative pressure tube passes;

[0008] The drainage tank and the sealing cover are fixedly installed by the sealing cover snap fastener. The sealing cover can be rotated so that the drainage tube through the drainage hole is positioned above the drainage sampling groove by rotating the sealing cover.

[0009] In this utility model, as one of the implementation schemes, the inner wall of the drainage tank is provided with 1 to 8 drainage sampling grooves, preferably 2 to 4 drainage sampling grooves, and more preferably 4 drainage sampling grooves; the outer wall of the drainage tank is provided with 1 to 8 sampling valves, preferably 2 to 4 sampling valves, and more preferably 4 sampling valves.

[0010] In this utility model, as one of the implementation schemes, the outer wall of the drainage tank 1 is provided with a sampling valve, a sampling slot number and a drainage pipe scale. The sampling valve passes through the side wall of the drainage tank and communicates with the drainage sampling slot. The sampling slot number 3 is located above the sampling valve and corresponds one-to-one with the drainage sampling slot 4.

[0011] In this invention, as one of the implementation schemes, each drainage sampling tank is connected to a sampling valve, and the sampling valve is equipped with a switch to control the outflow of liquid inside the drainage sampling tank.

[0012] In this utility model, as one of the embodiments, the drainage tank and the sealing cover are installed and fixed by at least one sealing cover snap fastener, a sealing space is formed between the drainage tank and the sealing cover, the sealing cover can rotate along the top texture of the drainage tank 1, and the outer edge of the sealing cover is also provided with a recess or thread.

[0013] In this invention, as one embodiment, the negative pressure drainage tank is further provided with a sampling pointer. The sampling pointer is integrally connected to the sealing cap via a snap-fit ​​mechanism. The sampling pointer and the drainage tube are in the same vertical direction and located on the same radius of the sealing cap. This ensures that when the sampling pointer points to a specific sampling slot number, the liquid injected into the drainage tube 8 can flow precisely into the drainage sampling slot corresponding to that number. The position of the drainage tube 8 can be determined by the position of the sampling pointer 5 when the sealing cap is rotated.

[0014] In this utility model, as one embodiment, the sealing cap buckle is integrally connected to the sealing cap, that is, the sampling pointer, the sealing cap buckle, and the sealing cap are an integral structure, thereby ensuring that the sealing cap can drive the sampling pointer to rotate and move, so that the sampling pointer can mark the position of the drainage tube; the sealing cap buckle is provided with a protrusion on the side near the outer wall of the drainage tank, for engaging with the triangular protrusion on the outer wall of the drainage tank, and a hook is provided on the other side of the sealing cap buckle.

[0015] In this utility model, as one of the embodiments, the sealing cover buckle adopts one or both of the two sealing structures of O-ring and sealing ring; preferably, the sealing cover buckle adopts both O-ring and sealing ring sealing structures at the same time, so as to achieve a more reliable seal.

[0016] In this utility model, as one of the implementation schemes, the negative pressure tube and the drainage tube need to be connected before operation.

[0017] This utility model provides a negative pressure drainage tank, which includes a drainage tank body, a sampling valve, sampling slot numbers, a drainage sampling slot, a sampling pointer, a sealing cap buckle, a sealing cap, a drainage tube, a drainage tube scale, a negative pressure tube, an O-ring, a sealing ring, a negative pressure hole, and a drainage hole. This utility model also provides a time-segmented liquid metering and collection method. Using the aforementioned negative pressure drainage tank, when it is necessary to measure the liquid flow rate for a specific time period, the sampling pointer is aligned with the sampling slot number corresponding to the drainage sampling slot by rotating the sealing cap, and the sampling valve is opened to collect the liquid for that time period. When it is not necessary to measure the liquid flow rate for a specific time period, the sampling pointer is aligned with the drainage tube scale by rotating the sealing cap.

[0018] In this utility model, as one of the implementation schemes, when the method does not require measuring the liquid flow rate and sampling secretions over a certain period of time, the sealing cap is rotated so that the sampling pointer points to the scale of the drainage tube, and the attracted liquid is collected in the negative pressure drainage tank.

[0019] In this utility model, as one of the implementation schemes, when the method needs to measure the liquid flow rate and sample secretions over a certain period of time, the sealing cap is rotated so that the sampling pointer points to the sampling slot number corresponding to the required drainage sampling slot.

[0020] In this utility model, as one of the implementation schemes, the size of each drainage sampling groove is fixed, and the conversion between different sampling grooves can be achieved by rotating the sealing cover, and the flow rate per unit time can be calculated.

[0021] In this utility model, as one of the implementation schemes, if the method needs to collect and test secretions for a certain period of time, it is only necessary to open the sampling valve, and the secretions in the corresponding drainage sampling groove will flow into the collection container.

[0022] In this utility model, as one of the implementation schemes, it is preferred that the drainage tank is a transparent tank. Several drainage sampling slots are distributed on the inner wall of the transparent negative pressure drainage tank. By rotating the sealing cap, the drainage tank can be aligned with the drainage tank body or the drainage sampling slots, thereby realizing time-sharing and batch-wise measurement and sampling.

[0023] This invention comprises a drainage canister and multiple drainage sampling slots. This invention not only allows for precise calculation of the drainage volume at different time periods, but also facilitates the collection of secretions from different time periods for testing by medical personnel.

[0024] Compared with the prior art, the negative pressure drainage tank and its usage method described in this utility model have the following advantages:

[0025] 1. The double-layer sealing structure solves the problem of air leakage in the negative pressure tank, ensuring the strict sealing of the negative pressure drainage tank of this utility model;

[0026] 2. By combining a single negative pressure drainage tank with sampling tank 4 and sampling valve 2, time-segmented and segmented metering and data collection can be achieved. The structure of sampling valve 2 makes data collection simpler and more convenient.

[0027] 3. It consists of a drainage cup and multiple drainage sampling slots. This allows for accurate calculation of the drainage volume at different time periods and facilitates the collection of secretions from different time periods for testing by medical staff;

[0028] 4. Several drainage sampling slots are distributed on the inner wall of the negative pressure drainage tank. By rotating the negative pressure sealing cover, the drainage tank can be aligned with the drainage tank body or the drainage sampling slot, thereby realizing time-sharing and batch-based metering and sampling. Attached Figure Description

[0029] Figure 1 : Main view of the negative pressure drainage tank described in this utility model;

[0030] Figure 2 The enlarged view shows a partial view of the sealing cover buckle 6 in Embodiment 1 of this utility model, which uses two sealing structures: an O-ring 11 and a sealing ring 12.

[0031] Figure 3 : A schematic diagram of the negative pressure drainage tank structure described in Embodiment 1 of this utility model;

[0032] Figure 4 : A three-dimensional structural diagram of the negative pressure drainage tank described in Embodiment 1 of this utility model.

[0033] Explanation of reference numerals in the attached drawings: 1. Drainage tank body; 2. Sampling valve; 3. Sampling slot number; 4. Drainage sampling slot; 5. Sampling pointer; 6. Sealing cover buckle; 7. Sealing cover; 8. Drainage pipe; 9. Drainage pipe scale; 10. Negative pressure pipe; 11. O-type sealing pipe; 12. Sealing ring; 81. Drainage hole; 101. Negative pressure hole. Detailed Implementation

[0034] The following embodiments are used to further illustrate the present invention, but do not limit the effective scope of the present invention in any way.

[0035] In specific embodiments, the terms "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," and "middle" used in this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe this utility model and its embodiments, and are not intended to limit the indicated device, nor do they constitute a limitation on this utility model.

[0036] Furthermore, the terms "set", "equipped", "connected", and "connected" used in this utility model should be interpreted broadly. They can refer to fixed connections or non-fixed connections, mechanical connections or any other type of connection, direct connections or indirect connections through a medium. All connection methods commonly used by those skilled in the art are within the protection scope of this utility model.

[0037] Example 1

[0038] like Figures 1-4 As shown, in this embodiment, the negative pressure drainage tank includes a drainage tank body 1, a sampling valve 2, a sampling slot number 3, a drainage sampling slot 4, a sampling pointer 5, a sealing cover buckle 6, a sealing cover 7, a drainage pipe 8, a drainage pipe scale 9, a negative pressure pipe 10, an O-ring seal 11, a sealing ring 12, a drainage hole 81, and a negative pressure hole 101.

[0039] In this embodiment, the drainage tank 1 is a hollow tank, meaning the top opening is sealed with a cap, and its inner wall is provided with a drainage sampling groove 4. (See [reference]). Figure 4 The number of drainage sampling slots can be set according to actual needs, and can be set to 1, 2, 3 or more; preferably, in this embodiment, it is set to 4.

[0040] The outer wall of the drainage tank 1 is equipped with a sampling valve 2, sampling slot number 3, and drainage tube scale 9. The sampling valve 2 passes through the side wall of the drainage tank 1 and communicates with the drainage sampling slot 4. The injected liquid enters the drainage sampling slot through the drainage tank 8 and finally flows out through the sampling valve 2 for the operator to collect. The sampling slot number 3 is located above the sampling valve 2 and corresponds one-to-one with the drainage sampling slot 4; that is, the first drainage sampling slot is numbered 1, the second drainage sampling slot is numbered 2, and so on.

[0041] In this embodiment, as one of the preferred options, the scale 9 of the drainage tube is set to a range of 1000ml. Of course, it can be set to the required range according to the work needs.

[0042] like Figure 4 Each of the drainage sampling tanks 4 is connected to a corresponding sampling valve 2. The sampling valve 2 is equipped with a switch to control the outflow of liquid inside the drainage sampling tank. When the switch is closed, the liquid is stored in the drainage sampling tank. When the switch is opened, the liquid flows out through the sampling valve.

[0043] The drainage can body 1 and the sealing cover 7 are installed and fixed by the sealing cover buckle 6. A sealed space is formed between the drainage can body 1 and the sealing cover 7. The sealed space is used to contain liquid or secretions. The sealing cover 7 can rotate along the texture at the top of the drainage can 1. The sealing cover 7 must not only do a good job of sealing the negative pressure drainage can of this utility model, but also ensure that it can rotate and move to adjust the position of the drainage tube 8.

[0044] In addition, the outer edge of the sealing cover 7 is provided with a recess or a thread to ensure that the operator can prevent slipping / increase friction when rotating the sealing cover. It can also be provided as an intermittent protrusion, or a combination of recess and protrusion, or a structure similar to or similar to that in this embodiment.

[0045] The negative pressure drainage tank is also equipped with a sampling pointer 5, which is integrally connected to the sealing cover snap-fit ​​6 (integrated structure). The sampling pointer 5 and the drainage tube 8 are in the same vertical direction and are located on the same radius of the sealing cover 7. This ensures that when the sampling pointer 5 points to a certain sampling slot number 3, the liquid injected into its drainage tube 8 can flow into the drainage sampling slot 4 corresponding to the sampling slot number. When rotating the sealing cover 7, the position of the drainage tube 8 can be determined by the position of the sampling pointer 5. This requires that the pointer 5 and the drainage tube 8 maintain a fixed distance. When the sealing cover 7 rotates, the drainage tube 8 and the pointer 5 will rotate simultaneously and their positions remain fixed. Therefore, the drainage tube 8 can be set at a certain position on the sealing cover, but it must maintain a fixed distance from the pointer 5. Preferably, in this embodiment, the pointer 5 and the drainage tube 8 are located on the same radius of the cover disc of the sealing cover 7.

[0046] In this embodiment, as Figure 2 , Figure 4As shown, the sealing cap buckle 6 is integrally connected to the sealing cap 7, meaning the sampling pointer 5, the sealing cap buckle 6, and the sealing cap 7 are a single integrated structure. This ensures that when the sealing cap 7 rotates, it can drive the sampling pointer 5 to rotate and move, thereby enabling the sampling pointer 5 to mark the position of the drainage tube 8. Furthermore, the sealing cap buckle 6 has a protrusion on the side near the outer wall of the drainage tank 1, and a corresponding protrusion is also provided on the outer wall of the drainage tank 1. Figure 2 As shown, the protrusion is triangular, and the two protrusions can be fastened together. That is, the protrusion on the side of the sealing cap buckle 6 near the outer wall of the drainage tank 1 fastens with the triangular protrusion on the outer wall of the drainage tank 1. After connection, it can ensure that the sealing groove 7 and the drainage tank 1 are strictly sealed and airtight. Of course, this embodiment is a preferred method, using two protrusions for connection. In practice, slots, grooves, or other similar or identical methods can also be used for fastening. A hook is also provided on the other side of the sealing cap buckle 6.

[0047] In this embodiment, the negative pressure drainage tank is provided with at least one sealing cap buckle 6. Two, three, four, five, six, or more sealing cap buckles 6 can also be provided to ensure that the sealing cap can be tightly fastened to the drainage tank body. However, generally only one sealing cap buckle is provided. The sampling pointer 5 is integrally connected to the sealing cap buckle 6 because only one drainage tube 8 is provided in this embodiment. If necessary, when two, three, or more drainage tubes 8 are provided, correspondingly, two, three, or more sampling pointers 5 need to be integrally connected to the sealing cap buckle 6.

[0048] The sealing cover buckle 6 can employ one or both of the following sealing structures: an O-ring 11 and a sealing ring 12. In this embodiment, as a preferred option, the sealing cover buckle 6 employs both the O-ring 11 and the sealing ring 12, achieving a more reliable seal. The structures of the O-ring 11 and the sealing ring 12 are shown in the attached diagram. Figure 2 As shown.

[0049] Use of instruments:

[0050] like Figure 4As shown, before operation, connect the negative pressure tube 10 and the drainage tube 8. When it is not necessary to measure the flow rate of liquid and sample secretions over a certain period of time, rotate the sealing cap 7 so that the sampling pointer 5 points to the scale 9 of the drainage tube. At this time, the aspirated liquid is collected in the negative pressure drainage tank 1. When it is necessary to measure the flow rate of liquid and sample secretions over a certain period of time, rotate the sealing cap 7 so that the sampling pointer 5 points to the sampling tank number 3 corresponding to the required drainage sampling tank 4. The size of each drainage sampling tank is fixed, and the flow rate per unit time can be calculated. If it is necessary to collect and test secretions over a certain period of time, simply open the sampling valve 2, and the secretions in the corresponding drainage sampling tank 4 will flow into the collection container.

Claims

1. A negative pressure drainage tank, comprising a drainage tank body (1) and a sealing cap (7), characterized in that, The drainage tank (1) is a hollow tank with a drainage sampling groove (4) on the inner wall and a sampling valve (2) on the outer wall. The drainage sampling groove (4) is connected to the sampling valve (2). The sealing cap (7) is provided with a drainage hole (81) through which the drainage tube (8) passes and a negative pressure hole (101) through which the negative pressure tube (10) passes; The drainage tank (1) and the sealing cover (7) are fixedly installed by the sealing cover buckle (6). The sealing cover (7) is rotatable. By rotating the sealing cover (7), the drainage pipe (8) passing through the drainage hole (81) is positioned above the drainage sampling groove (4).

2. The negative pressure drainage tank according to claim 1, characterized in that, The inner wall of the drainage tank (1) is provided with 1 to 8 drainage sampling grooves (4); the outer wall of the drainage tank (1) is provided with 1 to 8 sampling valves (2).

3. The negative pressure drainage tank according to claim 2, characterized in that, The inner wall of the drainage tank (1) is provided with 2 to 4 drainage sampling grooves (4); the outer wall of the drainage tank (1) is provided with 2 to 4 sampling valves (2).

4. The negative pressure drainage tank according to claim 3, characterized in that, The inner wall of the drainage tank (1) is provided with 4 drainage sampling slots (4); the outer wall of the drainage tank (1) is provided with 4 sampling valves (2).

5. The negative pressure drainage tank according to claim 1, characterized in that, The outer wall of the drainage tank (1) is provided with a sampling valve (2), a sampling slot number (3) and a drainage pipe scale (9). The sampling valve (2) passes through the side wall of the drainage tank (1) and communicates with the drainage sampling slot (4). The sampling slot number (3) is located above the sampling valve (2) and corresponds one-to-one with the drainage sampling slot (4).

6. The negative pressure drainage tank according to claim 5, characterized in that, Each drainage sampling tank (4) is connected to a sampling valve (2), and the sampling valve (2) is equipped with a switch to control the outflow of liquid inside the drainage sampling tank.

7. The negative pressure drainage tank according to claim 1, characterized in that, A sealed space is formed between the drainage tank (1) and the sealing cover (7). The sealing cover (7) can rotate along the top of the drainage tank (1). The outer edge of the sealing cover (7) is also provided with a recess or thread.

8. The negative pressure drainage tank according to claim 1, characterized in that, The negative pressure drainage tank is also provided with a sampling pointer (5), which is integrally connected to the sealing cover buckle (6). The sampling pointer (5) and the drainage tube (8) are in the same vertical direction and located on the same radius of the sealing cover (7).

9. The negative pressure drainage tank according to claim 1, characterized in that, The sealing cap buckle (6) is integrally connected to the sealing cap (7). When the sealing cap (7) rotates, it can drive the sampling pointer (5) to rotate and move. The sealing cap buckle (6) has a protrusion on one side near the outer wall of the drainage tank (1) for engaging with the triangular protrusion on the outer wall of the drainage tank (1). The other side of the sealing cap buckle (6) has a hook.

10. The negative pressure drainage tank according to claim 1, characterized in that, The sealing cover buckle (6) adopts one or both of the two sealing structures: O-ring (11) and sealing ring (12).

11. The negative pressure drainage tank according to claim 10, characterized in that, The sealing cover buckle (6) adopts both O-ring (11) and sealing ring (12) sealing structures.

12. The negative pressure drainage tank according to any one of claims 1-11, characterized in that, The negative pressure drainage tank (1) has a transparent structure.

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