High negative-pressure zero collection drainage tube

Abstract

The invention discloses a drainage-tube with high negative pressure and zero accumulation, which comprises a built-in tube (1), a drug feeding pot (2), a drug feeding catheter (3) and a drainage external nozzle (5); the wall of the built-in tube is provided with side outlets (6) used for drainage; the rear end of the built-in tube is sheathed with the front connector of the drug feeding pot and communicated with the drainage external nozzle which is sheathed with the rear connector of the drug feeding pot; a tubulose net sleeve or a long-rectangular net piece (11) which is made from soft netty materials runs through the built-in tube; the front end of the tubulose net sleeve, after going through the front end of the built-in tube or the side outlet (15) of the tubulose net sleeve positioned at the front end of the built-in tube, is folded inversely to sheathe on all side outlets; the rear end of the tubulose net sleeve or the long-rectangular net piece is inducted in the drug feeding pot and then sealed and fixed; an inner tube (14) provided with side outlets used for draining on the tube wall and the tubulose net sleeve or the long-rectangular net piece are positioned in and run through the built-in tube in parallel; the rear end of the inner tube is connected to the internal connector of the rear part of the drug feeding pot and communicated directly with the drainage external nozzle that is sheathed with the external connector of the rear end of the drug feeding pot. The drainage-tube is not easily blocked and can adopt higher negative pressure drainage, and the net sleeve can be pulled out from the connector of the drug feeding pot.

Description

technical field [0001] The invention relates to a medical device, in particular to a postoperative drainage tube. Background technique [0002] External drainage refers to the mechanical measures to establish open channels between human body cavities, organs, joints, tissues, etc. and the outside world, which is one of the basic operations of surgery. Existing surgical drainage tubes mainly include single-lumen drainage tubes and double-set drainage tubes. [0003] The structure of the single-lumen drainage tube is relatively simple, and it is generally a tube made of plastic or silicone. At present, there is a single-lumen drainage tube with the function of adding medicine to the wound, which includes a built-in tube placed in the patient's body cavity for drainage, a medicine dosing pot, a medicine dosing catheter, and an external drainage tube. There are multiple side holes for drainage. The dosing pot is composed of a front part and a rear part that are socketed togeth...

AI Technical Summary

Problems solved by technology

The double cannula has the functions of postoperative drainage, wound washing, wound administration, and anti-blocking of the built-in drainage tube. It is the most complete and advanced postoperative drainage tube at present, but it still has the following defects: (1) it cannot Completely solve the key "bottleneck" problem that affects the drainage effect - the blockage of the drainage tube (note: although the built-in drainage tube can be replaced, the drainage hole of the flushing tube of the jacket will still be blocked); (2) when actively draining with negative pressure , cannula drainage requires air or medicinal liquid to continuously enter the drained area, which is easy to form a cavity locally, and also increases the risk of bacteria in the air entering the drained area

(3) Only gravity or low negative pressure can be used for drainage, and the biggest disadvantage of gravity and low negative pressure drainage is that the drainage is not timely and thorough, and it is difficult to eliminate the residual dead space in a short time

However, for patients with intrabody surgery and primary suture wounds in liver, breast, stomach and pancreas, etc., when this technique is applied, it is necessary to make a special body surface wound extraction sponge during the operation, and / or the drainage port must be expanded after the operation. The sponge and catheter used for drainage can only be taken out through trauma, and there are problems such as secondary injury to the patient, increased pain for the patient, and increased operational difficulty and workload for the clinician.

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