FR2744359A1 - Liquid collector for surgical operations - Google Patents

Abstract

The collector has two pockets (a,b), one inside the other. The level of liquid (l) recovered by the opening (C) in the internal pocket (B) created by increase of the level of a pressure on the wall of the pocket which obstructs the aspiration orifice (D) connected to the aspiration centre. The pocket can have an upper cut out which frees a space (E) and in the pocket (A). The inner pocket can have a part folded over on itself. The fold can lower itself progressively as a function of the level of liquid.

Description

DEVICE FOR THE RECOVERY OF LIQUIDS
WITH SECURITY SYSTEM
The present invention relates to the recovery of all liquids using a collection bag.

 By way of example but without limitation, the present invention will be introduced and explained with respect to the recovery of liquid in the operating room during surgical procedures.

 During all surgical operations, the presence of blood or various liquids oblige the use of suction cannulas which, via a suction hose, allow the recovery of liquids in suction jars or suction bags.

 This recovery procedure is applied to all interventions in the operating room and for this the establishments are equipped with central vacuum units in technical rooms where pipe circuits are installed to serve all of the rooms using aspiration.

 As the liquids sucked in are waste considered dirty, it is imperative that no liquids enter the distribution circuits of establishments.

 Also each device is equipped with a security system to limit this risk.

 This security applied to the liquid recovery bags has so far been constituted by a float principle which under the pressure of the liquid obstructs the suction path.

 These effective techniques require the manufacture of complex systems often from injected plastic parts, which represents very high investment costs and therefore sales costs accordingly.

 The subject of the present invention is a different approach to how to guarantee the security sought for such collection bags.

 According to the invention our device consists of two pockets of different size, the smallest (B) being placed in the largest (A) according to Figure 1.

 The pocket (B) is cut on one part in order to leave a space (E).

 Finally, the pocket (B) is half folded back on itself in its length at (B ') (Fig. 2).

 The two pockets are welded and equipped with 2 pipes of different length. The shortest (C) connected to the suction pipe allows the liquid to arrive in the pocket (B). The longest (D) connected to the wall suction sucks in the pocket (A) (Fig.3).

 During aspiration, the liquid (L) sucked through the orifice (C) is collected in the pocket (B) (Fig. 4).

 The level of liquid in it will gradually increase and apply the free face (B ') of the pocket (B) against the pipe (D) (Fig.4). This has the effect, with the increase of the liquid level, of completely obstructing the orifice (D) and therefore of blocking the suction (Fig. 5).

 This principle may, according to a variant not illustrated, operate using a valve installed at the base of the orifice (D) which will in the same way be subjected to the pressure exerted by the pocket (B).

 The bags will be of different sizes depending on the amount of liquid to be recovered (example: 1 liter, 1.7 liters and 3 liters).

 The recovery principle according to the invention may be surrounded by a packaging (G) paper or cardboard of round, conical or other shape (Fig. 6) and equipped with a cover (H) after the installation of a fitting (R) joining the two pipes (C and D), in order to guarantee better safety during the transfer of the collected waste.

Claims (7)

 1) Device intended for the recovery of liquids characterized by an assembly of 2 pockets (A and B), one inside the other (Fig.l) and whose level of liquid (L) recovered by an orifice (C) in the internal pocket (B) creates by increasing the level (Fig. 4) a pressure on the wall of the pocket which obstructs the suction opening (D) connected to the central vacuum.  2) Device for recovering liquids according to claim 1 characterized in that the pocket (B) has an upper cutout freeing a space (E) and is in the pocket (A) (Fig.l).  3) Device for recovering liquids according to claim 1 characterized in that the pocket (B) has a part folded back on itself, this fold (B) coming to fold gradually depending on the level of liquid (L) in the pocket (B) until it obstructs the pipe (D) thus eliminating any possibility of aspiration.  4) device for recovering liquids according to one of the preceding claims, characterized by the two pockets (A and B), welded and equipped with 2 pipes (C and D) of different lengths (Fig.3).  5) Device for recovering liquids according to one of the preceding claims, characterized by an orifice (C) allowing the arrival of the liquid in the pocket (B) and an orifice (D) allowing the suction in the pocket ( A) (Fig. 4).  6) Device for recovering liquids according to one of the preceding claims, characterized by the use of a connector (R) to secure the two pipes (C and D) (Fig.6).  7) Device for recovering liquids according to one of the preceding claims, characterized by the use of a cardboard envelope or the like, equipped with a cover (H) in which the entire device is placed (Fig. .6).