CN2344036Y

CN2344036Y - Protective valve for medical negative pressure drainage device

Info

Publication number: CN2344036Y
Application number: CN 98237492
Authority: CN
Inventors: 于来祥; 黄丹; 李洪兵
Original assignee: Anshan Iron and Steel Group Co Ltd
Current assignee: Anshan Iron and Steel Group Co Ltd
Priority date: 1998-04-30
Filing date: 1998-04-30
Publication date: 1999-10-20
Anticipated expiration: 2008-04-30

Abstract

The utility model relates to a protector for a negative pressure drainage device after a surgical operation, which is composed of an outer casing, an inner blocking valve, a linear fixture, a compression spring, and a drainage pipe joint, and the connection relationship between them is in the outer casing The inner cavity of the tube 3 is provided with an internal blocking valve 2 with a base 5, upper and lower clamps 4, 6 are provided at the middle and lower part of the outer casing 3, the base 5 of the internal blocking valve 2 is arranged between the upper and lower clamps, and the spring 8 is stuck between the base 5 and the lower fixture. The utility model has the advantages of simple structure and convenient use, and when the negative pressure of the negative pressure drainage of the human body is suddenly released, the protection valve can be quickly closed to effectively prevent retrograde infection caused by gas-liquid backflow.

Description

Medical negative pressure drainage device protective valve

This utility model relates to the protector of negative pressure drainage device behind a kind of surgical operation, belongs to medical instruments field.

Used drainage system on clinical medicine, mostly adopt glass flask as container, again a glass tubing being passed bottle stopper puts in the bottle, the other end links to each other with the plastics drainage tube that the operative site of need drain communicates and realizes generally drain, this drainage system can not extract gas or liquid sometimes smoothly, in case and the vial fragmentation also can give and cause harm such as reverse counterflow and negative pressure disappearance.For addressing the above problem, people develop the container that bladder drainage system and plastic sheeting are made, though above-mentioned two kinds of drainage devices can both be preferably the pneumatosis or the hydrops of disease sites in the human body are sucked out, patient and medical personnel have been made things convenient for, but still leak air phenomenon often, do not note very easily making gas-liquid to reflux slightly, cause retrograde infection.

The purpose of this utility model is to avoid weak point of the prior art, and a kind of medical negative pressure drainage device protective valve is provided.It can make patient in air-breathing or imbibition process, no matter adopt which kind of drainage system, if when pressure transient occurring or not having negative pressure, can stop up drainage tube rapidly, prevents that gas-liquid from flowing backwards.Can also guarantee simultaneously that the valve body upper end and the negative pressure pressure of the near end drainage tube of human body contact-segment continue constant.

This utility model is to realize like this, it is made up of trocar sheath 3, interior stifled valve 2, linear jig, compression spring 8 and drainage tube joint, annexation between them is the interior stifled valve 2 that is provided with band base 5 at the inner chamber of trocar sheath 3, be provided with upper and lower jig 4,6 in the middle and lower part of trocar sheath 3, the base 5 of interior stifled valve 2 is located at up and down between the jig, compression spring 8 is stuck between base 5 and the following jig, at the input joint on two ends are respectively equipped with up and down 1 and the following output end connector 7 of trocar sheath 3.

The utility model has the advantages that, simple in structure, easy to use, need not other people nurse during drain, promptly made things convenient for patient and medical personnel, eliminated the hidden danger of retrograde infection, can keep the constant persistent state of near end drainage tube negative pressure again.

Below in conjunction with accompanying drawing this utility model is elaborated.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of this utility model Fig. 1.

Fig. 3 is the vertical view of stifled valve base in this utility model.

Referring to Fig. 1, this utility model is by trocar sheath, interior stifled valve, linear jig, compression spring and drainage tube joint are formed, annexation between them is the interior stifled valve 2 that is provided with band base 5 at the inner chamber of trocar sheath 3, termination of stifled valve 2 is conical in it, referring to Fig. 2, its external diameter equates with the internal diameter of trocar sheath, be provided with in the middle and lower part of trocar sheath 3, following jig 4,6, the base 5 of interior stifled valve 2 is located at up and down between the jig, can pass through valve body smoothly in order to make gas-liquid, this utility model has several holes 9 on the base of interior stifled valve, see Fig. 3, compression spring 8 is stuck between base 5 and the following jig, interior so stifled valve 2 and compression spring 8 can move in the scope that jig is stipulated up and down, at the input joint on two ends are respectively equipped with up and down 1 and the following output end connector 7 of trocar sheath 3, in order to connect near end drainage tube and body end drainage tube far away.

When being negative pressure state in the drainage tube, interior stifled valve 2 moves down, make the compression of compression spring 8, the body end drainage tube far away that gas, liquid are joined through valve body, with following outlet tube termination 7 by the near end drainage tube that joins with last input pipe joint 1 is external plastic bag (capsule) or glass containers extremely; When the negative pressure in the human body depression drainage device is removed suddenly; as vial fragmentation, rubber tube gas leakage etc.; the compression spring 8 of this protective valve is upspring rapidly; move the inner chamber that clogs trocar sheath 3 on the stifled valve 2 in making, prevent that effectively gas-liquid from flowing backwards, still keep constant lasting negative pressure state in the near end drainage tube this moment; after fixing a breakdown; still can continue drain, thereby reach purpose lasting, the constant negative pressure drain, reduce the chance of retrograde infection.This utility model can be in the protection of the drain on any drainage system, and medical application is comparatively extensive.

Claims

1. A protective valve for a medical negative pressure drainage device, characterized in that it is composed of an outer sleeve (3), an internal plugging valve (2), a linear fixture, a compression spring (8), and a drainage tube joint. The connection relationship is that an internal blocking valve (2) with a base (5) is provided in the inner cavity of the outer casing (3), and upper and lower fixtures (4) (6) are provided at the middle and lower parts of the outer casing (3). , the base (5) of the internal blocking valve (2) is set between the upper and lower fixtures, the compression spring (8) is stuck between the base (5) and the lower fixture, and the upper and lower ends of the outer sleeve (3) are respectively An upper input terminal connector (1) and a lower output terminal connector (7) are provided.

2. The protective valve of the medical negative pressure drainage device according to claim 1, characterized in that the end of the internal blocking valve (2) is conical.

3. The protective valve for medical negative pressure drainage device according to claim 1 or 2, characterized in that there are several holes (9) on the base (5) of the internal blocking valve (2).