Wound negative pressure suction tube

Abstract

The utility model discloses a wound negative pressure suction tube, and relates to the field of medical instruments. The utility model provides the wound negative pressure suction tube which is beneficial to improving the comfort of wound negative pressure drainage. The wound negative pressure suction tube comprises a suction tube body and a flushing tube; the front part of the suction tube body is a suction section, and a plurality of groups of suction holes are formed in the suction section at intervals along the length direction of the suction section; the flushing tube penetrates into the suction tube body from the rear part of the suction tube body and extends forwards to penetrate out of the front end of the suction tube body; the multi-hole dressing sleeve is arranged on the suction section in a sleeved mode. A separation structure can be further improved and additionally arranged, the separation structure comprises an air bag and an inflation tube, and the suction tube body can be blocked when the air bag is inflated. Therefore, the flushing fluid can flow through the whole wound, and the wound flushing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to wound negative pressure suction tubes. Background Technology

[0002] Negative pressure wound therapy (NPWT) uses negative pressure to aspirate exudate from the wound. Compared to conventional drainage, it can drain pus from the wound more quickly and thoroughly, promoting wound healing. Traditional NPWT suction tubes have multiple suction holes spaced along their length at the front and a negative pressure connector at the rear. Simply insert the front of the suction tube into the wound and connect the rear to a drainage bottle to achieve negative pressure drainage.

[0003] Further improvements to existing wound negative pressure suction tubes have resulted in wound irrigation tubes. These tubes incorporate an irrigation tube, extending from the rear end of the suction tube to the front. Physiological saline or other irrigation solutions are injected into the wound through the irrigation tube, and the irrigated solution is then aspirated. Wound irrigation effectively dilutes pus, removes necrotic tissue, and allows for smooth drainage through negative pressure, keeping the wound clean, inhibiting bacterial growth, creating a sterile environment, and promoting granulation tissue growth and wound healing. Patent application number 202122521682.9 discloses such a wound negative pressure suction tube.

[0004] The applicant has observed several drawbacks in existing wound suction tubes during their medical practice. Firstly, these tubes are made of medical-grade plastic, the surface of which is not pleasant to the touch for the muscles inside the wound. Furthermore, the negative pressure suction pulls the muscles towards the suction port, potentially causing discomfort or increased pain for the patient. Secondly, during wound irrigation, the irrigation fluid flows from the tip of the tube and then returns to irrigate the wound; however, upon returning, it encounters the suction port and is drawn back into the tube. This results in a significant amount of irrigation fluid not actually flowing very far, thus affecting the effectiveness of wound irrigation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a wound negative pressure suction tube that is conducive to improving the comfort of wound negative pressure drainage.

[0006] The technical solution adopted in this utility model is as follows: the wound negative pressure suction tube includes a suction tube body and an irrigation tube; the front part of the suction tube body is a suction section, and the suction section has multiple sets of suction holes spaced apart along the length of the suction section; the irrigation tube enters the suction tube body from the rear part and extends forward to exit from the front end of the suction tube body; it also includes a porous dressing sleeve, which is fitted onto the suction section.

[0007] Furthermore, the wound negative pressure suction tube includes a partition structure, which includes an air bladder and an inflation tube. The air bladder is located inside the rear of the suction section and is fitted onto the irrigation tube. At least one set of suction holes is located behind the air bladder. The inflation tube passes through the rear of the suction tube body and extends forward to communicate with the air bladder. When the air bladder is inflated, it can block the suction tube body.

[0008] Furthermore, the distance between the rear end of the airbag and the rear end of the suction section is 1 / 3 to 1 / 4 of the length of the suction section.

[0009] Furthermore, the front end of the porous dressing sleeve has a through hole through which the suction tube passes.

[0010] Furthermore, inside the suction tube, the air inflator tube and the flushing tube are attached and connected together.

[0011] Furthermore, the rear end of the suction tube is connected to a suction connector, the rear end of the flushing tube is connected to a flushing connector, and the rear end of the inflation tube is connected to an inflation connector.

[0012] Furthermore, each set of suction holes includes at least two suction holes evenly distributed along the circumference of the suction tube.

[0013] Furthermore, the porous dressing is a silver-containing dressing.

[0014] The beneficial effects of this invention are: 1. After the suction section is inserted into the wound, the porous dressing covers the suction section, allowing liquid to pass through without affecting normal suction. The porous dressing makes better contact with the surrounding muscles of the wound, providing a better tactile experience; and it does not create the sensation of drawing the muscles inside the wound into the suction holes. Therefore, this invention can improve the comfort of negative pressure wound therapy.

[0015] 2. Further refine the partition structure, such as... Figure 5 As shown, after the airbag is inflated, it blocks the suction tube. The negative pressure does not act on the front of the airbag, and the liquid in front of the airbag will not pass through the airbag and be sucked out by the suction tube. Therefore, the irrigation fluid during wound irrigation flows from the front of the suction section to the rear of the suction section and is sucked out from the suction hole behind the airbag; the irrigation fluid flows through almost the entire wound, thereby improving the effectiveness of wound irrigation. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the first type of wound negative pressure suction tube;

[0017] Figure 2 This is an enlarged view of the front part of the first type of wound negative pressure suction tube;

[0018] Figure 3 This is a structural diagram of the second type of wound negative pressure suction tube;

[0019] Figure 4An enlarged view of the front part of the second type of wound negative pressure suction tube;

[0020] Figure 5 Diagram showing the inflation status of the airbag in the second type of wound negative pressure suction tube;

[0021] Reference numerals: 1. Suction tube body; 11. Suction section; 12. Suction hole; 2. Suction connector; 3. Flushing tube; 4. Flushing connector; 5. Porous dressing sleeve; 51. Through hole; 6. Separation structure; 61. Airbag; 62. Inflation tube; 63. Inflation connector. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-2 This utility model will be described in detail.

[0023] like Figure 1 and Figure 2 As shown, the wound negative pressure suction tube includes a suction tube body 1 and an irrigation tube 3; the front part of the suction tube body 1 is a suction section 11, and the suction section 11 has multiple sets of suction holes 12 spaced apart along the length of the suction section 11; the irrigation tube 3 enters the suction tube body 1 from the rear part and extends forward to exit from the front end of the suction tube body 1; it also includes a porous dressing sleeve 5, which is fitted onto the suction section 11.

[0024] The method of using this invention is largely the same as that of existing technology. The suction section 11 is inserted into the wound, and the rear end of the suction tube 1 is connected to a drainage bottle or other negative pressure device to suction out the pus from the wound. The pus passes through the space between the suction tube 1 and the irrigation tube 3.

[0025] This invention adds a porous dressing sleeve 5 to the existing wound negative pressure suction tube. After the suction section 11 is inserted into the wound, the porous dressing sleeve 5 covers the suction section 11, allowing liquid to pass through without affecting normal suction. The porous dressing makes better contact with the surrounding muscles of the wound, providing a better tactile experience and preventing the sensation of drawing muscle from the wound into the suction holes. Therefore, this invention improves the comfort of wound negative pressure drainage.

[0026] The porous dressing sleeve 5 is a round sleeve made of porous dressing material. Porous dressings are commonly used consumables in medical and nursing care, often used to cover wounds, and have a good muscle feel. Porous dressings can be ordinary foam dressings, or existing silver-containing dressings.

[0027] Furthermore, such as Figures 3 to 5As shown, the present invention can be further improved as follows: the wound negative pressure suction tube includes a partition structure 6, the partition structure 6 includes an air bladder 61 and an inflation tube 62, the air bladder 61 is located inside the rear part of the suction section 11 and is fitted onto the irrigation tube 3, and at least one set of suction holes 12 is located behind the air bladder 61; the inflation tube 62 passes through the rear part of the suction tube body 1 into the suction tube body 1 and extends forward to communicate with the air bladder 61; when the air bladder 61 is inflated, it can block the suction tube body 1.

[0028] Further define the partition structure, such as Figure 5 As shown, after the airbag 61 is inflated through the inflation tube 62, the suction tube 1 is blocked. Negative pressure is not applied to the front of the airbag 61, and the liquid in front of the airbag 61 will not pass through the airbag 61 and be sucked out by the suction tube 1. Therefore, the irrigation fluid during wound irrigation flows primarily from the front of the suction section 11 to the rear of the suction section 11 and is sucked out through the suction hole 12 at the rear of the airbag 61; the irrigation fluid flows almost throughout the entire wound, thereby improving the effectiveness of wound irrigation.

[0029] Inflatable balloons are a common structure in medical tubing, found in urinary catheters, gastric tubes, and other common medical tubing. The inflatable balloon 61 of this invention can be designed and manufactured by referring to the inflatable balloons in existing medical tubing, and the same materials can be used.

[0030] The closer the rear end of the airbag 61 is to the rear end of the suction section 11, the longer the flushing fluid flows; however, correspondingly, there are fewer suction holes 12 behind the airbag 61, which weakens the ability to draw out liquid. Taking all factors into consideration, the preferred arrangement of this invention is that the distance between the rear end of the airbag 61 and the rear end of the suction section 11 is 1 / 3 to 1 / 4 of the length of the suction section 11. There can be two sets of suction holes 12 behind the airbag 61.

[0031] Some specific structures of this utility model can be as follows: The front end of the porous dressing sleeve 5 has a through hole 51, through which the suction tube 1 passes. Inside the suction tube 1, the inflation tube 62 is attached to and connected to the flushing tube 3.

[0032] The rear end of the suction tube 1 is used to connect to a negative pressure drainage bottle or other suction device, therefore a suction connector 2 should be provided. The rear end of the flushing tube 3 is used to connect to a syringe or other flushing device, therefore a flushing connector 4 should be provided. The rear end of the inflation tube 62 is used to connect to a syringe or other inflation device, therefore an inflation connector 63 should be provided. The above connectors should be compatible with the devices to be connected.

[0033] In order to attract liquid in multiple directions, each group of suction holes 12 includes at least two suction holes 12 that are evenly distributed circumferentially along the suction tube body 1, preferably four.

[0034] This invention can be manufactured in various models, i.e., in various lengths and diameters, to facilitate matching with different wounds.

Claims

1. A wound negative pressure suction tube, comprising a suction tube body (1) and an irrigation tube (3); the front part of the suction tube body (1) is a suction section (11), and the suction section (11) has multiple sets of suction holes (12) spaced apart along the length of the suction section (11); the irrigation tube (3) enters the suction tube body (1) from the rear part and extends forward to exit from the front end of the suction tube body (1); characterized in that: It includes a porous dressing sleeve (5) and a partition structure (6), with the porous dressing sleeve (5) fitted onto the suction section (11); The partition structure (6) includes an airbag (61) and an inflation tube (62). The airbag (61) is located inside the rear of the suction section (11) and is fitted onto the flushing tube (3). At least one set of suction holes (12) is located behind the airbag (61). The inflation tube (62) passes through the rear of the suction tube body (1) and extends forward to communicate with the airbag (61). When the airbag (61) is inflated, it can block the suction tube body (1).

2. The wound negative pressure suction tube according to claim 1, characterized in that: The distance between the rear end of the airbag (61) and the rear end of the suction section (11) is 1 / 3 to 1 / 4 of the length of the suction section (11).

3. The wound negative pressure suction tube according to claim 2, characterized in that: The front end of the porous dressing sleeve (5) has a through hole (51) through which the suction tube (1) passes.

4. The wound negative pressure suction tube according to claim 3, characterized in that: Inside the suction tube (1), the air inflator (62) is attached to and connected to the flushing tube (3).

5. The wound negative pressure suction tube according to claim 4, characterized in that: The rear end of the suction tube (1) is connected to a suction connector (2), the rear end of the flushing tube (3) is connected to a flushing connector (4), and the rear end of the inflation tube (62) is connected to an inflation connector (63).

6. The wound negative pressure suction tube according to claim 5, characterized in that: Each set of suction holes (12) includes at least two suction holes (12) evenly distributed along the circumference of the suction tube body (1).

7. The wound negative pressure suction tube according to claim 6, characterized in that, The porous dressing is a silver-containing dressing.

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