WO1988010124A1

WO1988010124A1 - Suction operation collection bag

Info

Publication number: WO1988010124A1
Application number: PCT/AU1988/000202
Authority: WO
Inventors: Brian Andrew Hills
Original assignee: Nova Medical Pty. Limited
Priority date: 1987-06-26
Filing date: 1988-06-24
Publication date: 1988-12-29

Abstract

A rigid jar (1) containing a flexible bag (6). The bag (6) has a single opening containing a resilient foam collar (14) which grips a tube of a suction port (8) and provides filtered, restrictive air flow between the interior and exterior of the bag (6). A vacuum port (9) enters the jar concentrically of the suction port (8) and ends proximate the collar (14). In operation the vacuum port (9) is connected to a vacuum source which provides reduced pressure in the jar interior and upon gas flow through the suction port and collar (14), reduced pressure within the bag (6). The suction port is then connected to a sterile tube for draining of the patient.

Description

SUCTION OPERATION COLLECTION BAG This invention relates to a collapsible bag which can be used for the collection of material suctioned from parts of the human body. Background Art

Under certain circumstances it is necessary to remove fluids from, for example, the lungs or stomach of a person undergoing an operation under anaesthetic or because of alternative circumstances. In the case of pumping fluids from heavily intoxicated people it is often necessary to remove up to fourteen litres of somewhat foul fluids. The normal procedure is to apply suction to the portion of the body to be drained via a flexible tube. An intermediate portion of the tube includes a solid collecting flask which must later be drained and cleaned. Disclosure of Invention

The present invention provides an apparatus which allows the safe use of a collapsible bag for the collection of suctioned fluids allowing for the clean, hygenic, and much more pleasant, disposal of the fluids along with the complete collapsible bag.

Accordingly, in one broad form, the present invention may be said to provide a rigid container with a releasable air tight lid, a collapsible bag within the container, a suction port leading through the lid into the collapsible bag, a vacuum port leading through the lid and being in fluid communication with both the bag interior and the volume between the bag and the rigid container.

Preferably the connection to the vacuum port is via a restriction to gas flow so that the vacuum applied to the exterior of the collapsible bag is always greater than, or equal to, the vacuum applied to the interior of the collapsible bag, thus keeping the bag expanded.

In operation the suction port is connected to a sterile flexible tube for insertion into the portion of the body where fluids are to be evacuated. Brief Description of the Drawings:-

By way of example only, two preferred forms of the present invention will now be described with reference to the accompanying drawings including: -

Fig. 1 which is a perspective view with internal detail of one embodiment of the invention; and

Fig. 2 which is a sectioned view showing internal detail of an alternative device embodying the invention. Best Mode of Carrying Out the Invention

Fig. 1 shows a rigid container 1 with a cooperative lid 2 and an O-ring seal 3 to provide a gas tight seal therebetween. The lid 2 includes an internal land 4 to which is removably εealingly attached a collapsible bag 6 by an O-ring 7. Leading into the interior of the collapsible bag 6 is the suction port 8 and the vacuum port 9. Leading into the container 1, but external of the collapsible bag 6 is an auxiliary port 10. Suitable tubing runs from each of the ports 8, 9 and 10. Tubing from the suction port 8 leads off to the patient and, in use, is inserted into portions of the patient's body where fluid is to be extracted.

Tubing connected to the vacuum port 9 and auxiliary port 10 lead off to a common vacuum source. The tubing leading from vacuum port 9 includes a restriction such as an adjustable clamp so that the vacuum applied by the vacuum source to auxiliary port 10 is always greater than or equal to the vacuum applied to vacuum port 9. Alternatively, the tubing to auxiliary port 10 enters the tubing to vacuum port 9 via a venturi attachment so that when air flows through port 9 and past the venturi the pressure gradient across the bag equals the difference between the static and dynamic pressures of the air flow at the venturi ensuring that the collapsible bag 6 is always tending towards a maximum extended configuration even if the tubing connected to the suction port 8 becomes blocked.

Fig. 2 shows a container 1 generally similar to that of the previous embodiment. Lid 12 fits neatly into the open end of the container 1 and is sealed therewith by seal 13. Extending through the lid 12 are co-axial inner suction port 8 and outer vacuum port 9. Internally of the bottle the suction port 8 extends some distance further than does the vacuum port 9. Positioned over this extra length of suction port 8 is a sponge rubber collar 14. The collar 14 fits sufficiently tightly on the suction port 9 so as to prevent it from easily sliding thereof but not so tight as to prevent it from being removed by hand. The plastic bag 6 has a neck 15 including two portions, a first portion 16 adhered to, and frictionally gripping the collar 14 and a second portion 17 being a number of centimetres long and being normally coiled so as not to interfere with placement of the bag 6 onto the suction port 8. The outer walls of the vacuum port 9 include through holes in the region proximate the lid 12 so as to form the auxiliary port 10. Thus in assembled operation the full vacuum of vacuum port 9 is applied through auxiliary port 10 to the space between the container 1 and the plastic bag 6. Simultaneously a vacuum is applied to the inside of the plastic bag 6 via the collar 14 which acts firstly as a filtering device and secondly as a small air restriction. The filtering function ensures that only air passes up from the bag into the vacuum port 9 while the air restriction function ensures that the pressure outside of the bag 6 is always slightly less than the pressure inside of the bag 6.

When the bag has been filled, or the particular operation completed, lid 12 is removed and collar 14 pulled off the suction port 8. This removal automatically wipes clean the portion of the suction port 18 which was inside the bag 6. Once the bag 6 is removed from the suction port 8 the coiled portion 17 of the neck of the bag 6 is straightened and tied so as to seal the bag for disposal.

In some cases, where the collar 14 is so adapted, the bag will be closed by the resilient contraction of the collar 14.

Claims

CLAIMS: -

1. A rigid container with a releasable air tight lid, a collapsible bag within the container, a suction port leading through the lid into the collapsible bag, a vacuum port leading through the lid and being in fluid communication with both the bag interior and the volume between the bag and the rigid container.

2. A container as in claim 1 wherein the bag includes a resilient annular collar grippingly engaged about a tubular extension of the suction port which thereby enters the bag interior, the material of the collar providing resistive gas communication between the bag interior and bag exterior within the jar.

3. A container as in Claim 2, wherein the vacuum port enters the jar interior enveloping the tubular extension and terminating proximate the annular collar.

4. A container as in Claim 2 wherein the annular collar has a through hole of normally substantially zero cross section when the collar is removed from the tubular extension so as to close the bag upon its removal from the tubular extension.

5. A container as in Claim 4 wherein the annular collar provides said gas communication that is furthermore of a filtering nature.

6. A bag for use in a device of claim 2herein the bag comprises one openable end containing a resilient annular collar substantially closing the end and including a central hole expandable so as to provide an entry for the tubular exterior.