Negative pressure drainage tube

Abstract

The negative pressure drainage tube comprises a tube body, a flushing cavity channel and a drainage cavity channel are formed in the tube body in the axial direction, the drainage cavity channel is used for draining effusion in the body, a flushing opening is formed in one end of the tube body, the flushing opening is communicated with the flushing cavity channel, and the flushing cavity channel is used for conveying flushing fluid to the flushing opening. A drainage opening is formed in the side wall of the end, close to the flushing opening, of the tube body and communicated with the drainage cavity channel. Hydrops on the inner circumferential cavity wall of a narrow cavity can be conveniently sucked, and hydrops drainage and cavity wall flushing can be carried out at the same time, so that the drainage efficiency and quality are improved.

Description

Technical Field

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

[0002] Negative pressure drainage tubes are medical devices used to drain necrotic tissue around wounds or accumulated fluid from the body. A negative pressure source connected to the drainage tube provides suction to draw out the fluid. Existing negative pressure drainage tubes have their suction port axially located at the end face, allowing them to only draw fluid in a single axial direction. When draining fluid from narrow cavities, they struggle to draw fluid from the circumferential walls, resulting in low drainage efficiency and quality. Furthermore, highly concentrated fluids have strong adhesion to the cavity walls, making them difficult to aspirate. This necessitates using an irrigation tube to infuse saline solution for dilution before negative pressure drainage, which is cumbersome and inefficient. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention provides a negative pressure drainage tube that can conveniently absorb accumulated fluid on the circumferential wall of a narrow cavity, and can simultaneously perform fluid drainage and cavity wall flushing, thereby improving drainage efficiency and quality.

[0004] According to an embodiment of this utility model, a negative pressure drainage tube is provided, including a tube body. The tube body has a flushing cavity and a drainage cavity opened along the axial direction. The drainage cavity is used to drain accumulated fluid in the body. One end of the tube body has a flushing port, which is connected to the flushing cavity. The flushing cavity is used to deliver flushing fluid to the flushing port. A drainage port is opened on the side wall of the tube body near the flushing port, which is connected to the drainage cavity.

[0005] A negative pressure drainage tube according to an embodiment of this utility model has at least the following beneficial effects: In use, the end of the tube with the flushing port is inserted into the wound in the patient's body. The flushing fluid, such as saline, is delivered to the flushing port through the flushing cavity. The flushing fluid is sprayed out from the flushing port to flush and dilute the accumulated fluid on the cavity wall, causing the accumulated fluid to detach from the cavity wall. At the same time, under the action of negative pressure suction, the flushed accumulated fluid flows into the drainage cavity from the drainage port on the side wall of the tube and is discharged from the body from the drainage cavity. Thus, it is possible to perform fluid drainage and cavity wall flushing at the same time, thereby improving drainage efficiency and quality. In addition, since the drainage port is opened on the side wall of the tube, by rotating the tube, the drainage port rotates with the tube to adjust the suction direction, thereby being able to absorb the accumulated fluid on the circumferential cavity wall, thereby improving drainage efficiency and quality.

[0006] According to some embodiments of the present invention, multiple drainage ports are provided, and the multiple drainage ports are evenly arranged at intervals along the circumference of the pipe body.

[0007] According to some embodiments of the present invention, the drainage port is configured as an elongated strip, and the drainage port extends along the axial direction of the tube body.

[0008] According to some embodiments of the present invention, a hemispherical contact is provided at one end of the tube body, and the flushing port is opened at the hemispherical contact.

[0009] According to some embodiments of the present invention, multiple flushing ports are provided, the flushing ports are opened radially along the hemispherical contact, and the multiple flushing ports are evenly arranged at intervals along the hemispherical surface of the hemispherical contact.

[0010] According to some embodiments of this utility model, the tube body is sequentially configured as a diversion section and a confluence section from the position of the drainage port away from the flushing port. The inner wall of the drainage cavity of the diversion section is connected with a cross-shaped reinforcing rib. The cross-shaped reinforcing rib extends axially to both ends of the diversion section. The cross-shaped reinforcing rib divides the drainage cavity into four diversion channels. All four diversion channels are connected to the drainage cavity of the confluence section. The flushing cavity of the diversion section is opened at the center of the cross-shaped reinforcing rib.

[0011] According to some embodiments of this utility model, four drainage ports are provided, and each drainage port corresponds to a diversion channel, with the drainage port connected to the diversion channel.

[0012] According to some embodiments of the present invention, the inner wall of the confluence section has a partition block extending radially inward, the partition block extending axially to both ends of the confluence section, the flushing cavity of the diversion section is opened in the partition block, and the drainage cavity of the confluence section is formed between the outer wall of the partition block and the inner wall of the confluence section.

[0013] According to some embodiments of the present invention, a connector is provided at one end of the tube body away from the flushing port. The connector is provided with a first joint and a second joint. The first joint and the second joint are arranged in a V-shape. The first joint communicates with the flushing cavity, and the second joint communicates with the drainage cavity.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1This is a cross-sectional view of the negative pressure drainage tube according to an embodiment of this utility model;

[0017] Figure 2 yes Figure 1 AA section view;

[0018] Figure 3 yes Figure 1 BB section view;

[0019] Figure 4 yes Figure 1 CC section view;

[0020] Figure 5 yes Figure 1 DD sectional view;

[0021] Figure 6 This is a partial structural schematic diagram of the negative pressure drainage tube according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] Pipe body 100, flushing cavity 110, drainage cavity 120, flushing port 130, drainage port 140, hemispherical contact 150, diversion section M, cross-shaped reinforcing rib 160, diversion channel 170, confluence section L, partition block 180, connector 200, first connector 210, first channel 211, second connector 220, second channel 221. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Understandably, referring to Figures 1 to 6 The present invention discloses a negative pressure drainage tube, comprising a tube body 100, wherein the tube body 100 is provided with a flushing cavity 110 and a drainage cavity 120 along the axial direction, the drainage cavity 120 is used to drain accumulated fluid in the body, one end of the tube body 100 is provided with a flushing port 130, the flushing port 130 is connected to the flushing cavity 110, the flushing cavity 110 is used to deliver flushing fluid to the flushing port 130, and the side wall of the tube body 100 near the flushing port 130 is provided with a drainage port 140, the drainage port 140 is connected to the drainage cavity 120.

[0029] In use, the end of the tube 100 with the flushing port 130 is inserted into the wound inside the patient's body. Fluid such as saline is delivered to the flushing port 130 through the flushing channel 110. The flushing fluid is sprayed out from the flushing port 130, flushing and diluting the accumulated fluid on the cavity wall, causing the accumulated fluid to detach from the cavity wall. At the same time, under the action of negative pressure suction, the flushed accumulated fluid flows from the drainage port 140 on the side wall of the tube 100 into the drainage channel 120 and is discharged from the body through the drainage channel 120. This allows for simultaneous drainage of accumulated fluid and flushing of the cavity wall, thereby improving drainage efficiency and quality. In addition, since the drainage port 140 is located on the side wall of the tube 100, by rotating the tube 100, the drainage port 140 rotates with the tube 100 to adjust the suction direction, thereby being able to suction the accumulated fluid on the circumferential cavity wall, further improving drainage efficiency and quality.

[0030] In addition, since the flushing port 130 is located at one end of the tube body 100 and the drainage port 140 is located on the side wall of the tube body 100 near the flushing port 130, the mutual influence between the flushing port 130 and the drainage port 140 can be reduced. Furthermore, the flushing fluid sprayed from the flushing port 130, after being flushed by the cavity wall, along with the accumulated liquid, can flow back from the drainage port 140 to the drainage cavity 120 in a timely manner, forming a circulation, thereby improving the flushing and drainage quality.

[0031] It should be noted that the flushing cavity 110 and the drainage cavity 120 can be arranged in parallel to each other, or the drainage cavity 120 can be arranged around the flushing cavity 110. The two cavities are not connected to each other, so that flushing fluid and accumulated fluid can be delivered simultaneously.

[0032] In use, the end of the drainage channel 120 away from the drainage port 140 is connected to a negative pressure source such as a negative pressure ball or a negative pressure pump to create a negative pressure suction force in the drainage channel 120, thereby drawing out the accumulated fluid in the body. The end of the irrigation channel 110 away from the irrigation port 130 is connected to a syringe to inject irrigation fluid such as physiological saline into the irrigation channel 110, thereby rinsing the wound.

[0033] Understandably, referring to Figure 2 and Figure 6 Multiple drainage ports 140 are provided, and the multiple drainage ports 140 are evenly arranged at intervals along the circumference of the tube body 100. By simultaneously absorbing the accumulated fluid on the circumferential cavity wall through the multiple drainage ports 140 evenly arranged at intervals along the circumference of the tube body 100, the drainage efficiency can be improved, and the possibility of blockage of the drainage cavity 120 due to the cavity wall adhering to and blocking the drainage ports 140 can be reduced, thereby improving the stability of drainage.

[0034] Understandably, referring to Figure 6 The drainage port 140 is elongated and extends along the axial direction of the tube body 100. Because the drainage port 140 is elongated and extends along the axial direction of the tube body 100, it can absorb the accumulated fluid on the axial cavity wall and increase the drainage area of ​​the drainage port 140 to improve drainage efficiency.

[0035] Understandably, referring to Figure 6 One end of the tube body 100 is provided with a hemispherical contact 150, and the flushing port 130 is opened at the hemispherical contact 150. When the tube body 100 is inserted into the body, the hemispherical contact 150 abuts against the body cavity wall, which can reduce the impact and wear of the tube body 100 on the body cavity wall. The hemispherical contact 150 slides along the body cavity wall, which can guide the tube body 100 to slide smoothly into the corresponding position in the body, thereby improving the convenience and smoothness of tube insertion.

[0036] Specifically, refer to Figure 1 and Figure 6 Multiple flushing ports 130 are provided, and the flushing ports 130 are radially arranged along the hemispherical surface of the hemispherical contact 150. Because the flushing ports 130 are radially arranged along the hemispherical surface of the hemispherical contact 150, and because the flushing ports 130 are evenly arranged, the flushing fluid sprayed from the flushing ports 130 can diffuse in all directions, thereby expanding the flushing range and reducing flushing dead zones, thus improving flushing quality and efficiency.

[0037] Understandably, referring to Figures 1 to 4 The pipe body 100 is configured with a diversion section and a confluence section sequentially from the drainage port 140 away from the flushing port 130. The inner wall of the drainage cavity 120 of the diversion section is connected to a cross-shaped reinforcing rib 160, which extends axially to both ends of the diversion section. The cross-shaped reinforcing rib 160 divides the drainage cavity 120 into four diversion channels 170, all of which connect to the drainage cavity 120 of the confluence section. The flushing cavity 110 of the diversion section is located at the center of the cross-shaped reinforcing rib 160. Because the inner wall of the drainage cavity 120 of the diversion section is connected to the cross-shaped reinforcing rib 160, which extends axially to both ends of the diversion section, the cross-shaped reinforcing rib 160 supports the pipe wall of the diversion section, improving its compressive strength and reducing the possibility of reduced flow area due to pipe wall adhesion, thereby increasing the drainage speed. In addition, the cross-shaped reinforcing ribs 160 divide the drainage cavity 120 into four diversion channels 170, so that the accumulated liquid flowing in from the drainage port 140 can flow into the four diversion channels 170 respectively, so as to divert and guide the accumulated liquid, and then converge and flow out in the drainage cavity 120 of the confluence section, which can reduce the possibility of blockage of the drainage cavity 120.

[0038] Specifically, refer to Figure 2 and Figure 6 Four drainage ports 140 are provided, each corresponding to a diversion channel 170. The drainage ports 140 are connected to the diversion channels 170. By connecting the drainage ports 140 to the corresponding diversion channels 170, the accumulated fluid can be directly diverted and guided at the drainage ports 140, thereby improving diversion efficiency and reducing the possibility of blockage in the drainage cavity 120. Furthermore, since the diversion channels 170 connected to the drainage ports 140 are smaller than the overall flow area of ​​the drainage cavity 120, the adsorption force of each drainage port 140 can be increased, thereby improving the drainage quality.

[0039] Specifically, refer to Figure 4 and Figure 5 A partition block 180 extends radially inward from the inner wall of the confluence section, and extends axially to both ends of the confluence section. A flushing channel 110 of the diversion section is formed within the partition block 180. A drainage channel 120 of the confluence section is formed between the outer wall of the partition block 180 and the inner wall of the confluence section. By separating the flushing channel 110 and the drainage channel 120 with the partition block 180, and by arranging the drainage channel 120 around the flushing channel 110, the mutual influence of pressure within the flushing channel 110 and the drainage channel 120 can be reduced, thereby improving the stability of the flushing and drainage process.

[0040] Understandably, referring to Figure 1A connector 200 is provided at the end of the tube body 100 away from the flushing port 130. The connector 200 is provided with a first connector 210 and a second connector 220, which are arranged in a V-shape. The first connector 210 connects to the flushing chamber 110, and the second connector 220 connects to the drainage chamber 120. Because the first connector 210 and the second connector 220 are arranged in a V-shape, a syringe can be connected through the first connector 210 to connect the syringe to the flushing chamber 110, and a negative pressure source can be connected through the second connector 220 to connect the negative pressure source to the drainage chamber 120. This allows for convenient simultaneous connection of the negative pressure source and the syringe to the tube body 100.

[0041] It should be noted that the first connector 210 has a first channel 211, which connects to the flushing chamber 110, and the second connector 220 has a second channel 221, which connects to the drainage chamber 120. The syringe can connect to the flushing chamber 110 through the first channel 211, and the negative pressure source can connect to the drainage chamber 120 through the second channel 221.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A negative pressure wound drainage tube, characterized in that, The utility model relates to a drainage tube, which comprises: a tube body, which is provided with a flushing cavity and a drainage cavity along an axial direction, the drainage cavity is used for draining effusion in a body, one end of the tube body is provided with a flushing port, the flushing port is communicated with the flushing cavity, the flushing cavity is used for conveying flushing liquid to the flushing port, a side wall of the one end of the tube body close to the flushing port is provided with a drainage port, the drainage port is communicated with the drainage cavity; the tube body is sequentially provided with a shunt section and a converging section from the position of the drainage port to a direction away from the flushing port, an inner wall of the drainage cavity of the shunt section is connected with a cross-shaped reinforcing rib, the cross-shaped reinforcing rib extends to both ends of the shunt section along an axial direction, the cross-shaped reinforcing rib divides the drainage cavity into four shunt channels, the four shunt channels are all communicated with the drainage cavity of the converging section, the flushing cavity of the shunt section is provided at a central position of the cross-shaped reinforcing rib.

2. The negative pressure wound drainage tube according to claim 1, characterized in that The drainage port is provided with a plurality of drainage ports, and the plurality of drainage ports are uniformly arranged along a circumferential direction of the tube body.

3. The negative pressure wound drainage tube of claim 1, wherein, The drainage port is provided in a strip shape, and the drainage port extends along an axial direction of the tube body.

4. The negative pressure wound drainage tube of claim 1, wherein, One end of the tube body is provided with a hemispherical contact, and the flushing port is provided in the hemispherical contact.

5. The negative pressure wound drainage tube of claim 4, wherein, The flushing port is provided with a plurality of flushing ports, the flushing ports are provided along a radial direction of the hemispherical contact, and the plurality of flushing ports are uniformly arranged along a hemispherical surface of the hemispherical contact.

6. The negative pressure wound drainage tube of claim 1, wherein, The drainage port is provided with four drainage ports, the drainage ports and the shunt channels are one-to-one corresponding, and the drainage ports are communicated with the shunt channels.

7. The negative pressure wound drainage tube of claim 1, wherein, An inner wall of the converging section extends inwardly along a radial direction, and a partition block extends to both ends of the converging section along an axial direction, the flushing cavity of the shunt section is provided in the partition block, and the drainage cavity of the converging section is formed between an outer wall of the partition block and the inner wall of the converging section.

8. The negative pressure wound drainage tube of claim 1, wherein, One end of the tube body away from the flushing port is provided with a connecting piece, the connecting piece is provided with a first connector and a second connector, the first connector and the second connector are arranged in a V shape, the first connector is communicated with the flushing cavity, and the second connector is communicated with the drainage cavity.

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