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: Angang Steel Co Ltd
Current assignee: Angang Steel 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 of a negative pressure drainage device, which is used after a surgical operation is finished. The utility model is composed of an outer sleeve pipe, an internal obturation valve, linearising fixtures, a compression spring and a drainage tube joint. The relations of connection are that the internal obturation valve 2 with a subbase 5 is arranged in the inner cavity of the outer sleeve pipe 3; the middle lower part of the outer sleeve pipe 3 is provided with an upper and a lower fixtures 4, 6; the subbase 5 of the internal obturation valve 2 is arranged between the upper and lower fixtures; the spring 8 is blocked between the subbase 5 and the lower fixture. The utility model has the advantages of simple structure and easy use and can be closed rapidly when the negative pressure of the negative pressure drainage of a human body relieves suddenly to effectively prevent air and liquid from back flowing to result in retrograde infection.

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 kind of medical negative pressure drainage device protective valve; it is characterized in that it is by trocar sheath (3); interior stifled valve (2); linear jig; compression spring (8); form with the 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); middle and lower part at trocar sheath (3) is provided with; following jig (4) (6); 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, is respectively equipped with input joint (1) and following output end connector (7) at the two ends up and down of trocar sheath (3).

2, medical negative pressure drainage device protective valve according to claim 1, the termination that it is characterized in that described interior stifled valve (2) is for conical.

3, medical negative pressure drainage device protective valve according to claim 1 and 2 is characterized in that having several holes (9) on the base (5) of stifled valve (2) in described.