FR2625545A1 - Tamper-proof polarizing device for joining medical fluid takeoffs onto sockets to be brazed - Google Patents

Abstract

Tamper-proof polarizing device for joining fluid takeoffs onto sockets. The invention relates to a device making it possible to mount fluid takeoffs on sockets without the risk of reversing the fluid by mistake. It consists of a takeoff with, on the rear face 8, a number of millings 3 fitting into the face 9 of the socket which includes a number of bosses 4. When the millings 3 are different in number, position, diameter or width, mounting is impossible if the socket does not include the corresponding bosses 4. The device according to the invention is particularly intended for medical fluid takeoffs.

Description

The invention relates to a socket which can be used for the connection of treatment devices, distributors of fluids by pipes or relaxation devices used, for example without restriction, in public or private hospitals.

These sockets installed on fixed equipment such as pipes, regulator outlets or on mobile equipment such as incubators, anesthesia or resuscitation devices, have a front face whose differentiation by fluid is governed by French Standardization. The ends of the flexible junction pipes and the devices directly adaptable to the sockets (flowmeters, rotameters, pressure or vacuum regulators and others) are also subject to this differentiation by fluid according to the same standard (AFNOR). Our subject is not at this level but at that of mounting the sockets on their sockets.

 The plugs6 are mounted on a metal base generally called "brazing connection" or "brazing socket" (In the whole description of the invention we will call this socket: "SOCKET"), this socket is connected to the distribution network of a definitively. It is at the connection, socket on socket, that our claim develops.

It is possible to encounter connection errors between the el ## iitSme socket and the socket. There are so-called "keying" systems.

These systems are, in most cases, made up of several pins fixed on the front face of the sleeve, more or less spaced apart depending on the fluid considered. On the rear face of the socket, several holes have been formed, the position of which corresponds to that of the pins on the front face of the socket, for a given fluid. The pins of the socket enter the holes of the socket.

However, these known devices have several drawbacks and, among others, do not have sufficient security. Indeed, these pins remain removable or easily destructible. As a result there is a risk of interchangeability between the different possible connections corresponding to different fluids; which can cause very serious incidents.

The present invention aims to remedy these possible drawbacks and proposes to provide a device, in particular for medical fluids, designed in such a way that during the mounting or a change of outlets by the intervention teams of hospitals or by installation maintenance companies, it is no longer possible to mount any socket on a normally specific socket of a fluid having undergone a pin removal.

The device which we are going to describe has reinforced safety devices sufficient to annihilate any serious incident which could be due to a socket-socket reversal. This reversal would have the effect, for example, of not distributing oxygen to an oxygen intake but another fluid which may be harmful to use.

The invention will be better understood by referring to the following description given by way of nonlimiting example and to the attached drawings in which
Figure (1) is a perspective view showing the socket and the socket.

The socket has a central part 1 which will come inside the central hole 7 of the socket during assembly, the assembly being sealed by the O-ring 2.

The rear face 8 of the socket has millings 3.

In this figure (i), two millings 3 are shown, but the quantity of millings can be different. Furthermore, their widths can also be different.

The rear face 8 of the socket comes to mounting to be applied to the face 9 of the socket.

One or more bosses 4 corresponding to the millings 3 are provided inside the front face 9 of the sleeve. These bosses are obtained by interrupting the annular groove 5 located on the face 9.

 The invention therefore consists in executing, for a given fluid, millings 3 corresponding to the bosses 4.

The respective position of the millings 3 on the rear of the socket 8 and that of the bosses 4 on the face of the socket 9 will be different depending on the fluids.

Furthermore, the widths, the number of millings and bosses, can be different from those shown in figure (i) - example: figures (2) and (3)
Figure (4) shows the plug and socket in the assembly position.

Although the invention has been described in a particular embodiment, it is understood that it is in no way limited thereto and that it is possible to make various modifications to it in terms of shapes, materials and combinations of these various elements without departing from the scope or the spirit of the invention.

Claims (4)

 1) Device for performing a tamper-proof polarization between socket and socket, in particular used for dispensing medical fluids, characterized in that the rear face (8) of the socket comprises one or more millings (3) and the face (9) of the socket, one or more bosses (4).  2) Device according to claim 1 characterized in that, when the milling or milling (3) correspond, in shape, to the boss or bosses (4), the rear face (8) of the socket is fitted inside from the face (9) of the sleeve, in this case only assembly is possible.  Any socket having one or more millings (3) in position, number, width, diameter or thickness of one or more bosses (4) of any socket, may not be embedded and therefore be mounted thereon.  3) Device according to any one of the preceding claims, characterized in that the boss (s) (4) can be located on the rear face (8) of the socket and the milling (s) (3) on the face (9} from the socket.  4) Device according to any one of the preceding claims, characterized in that the milling or milling as well as the boss or bosses are machined in the mass and therefore cannot be dismantled, this to prohibit any error in connection between socket and socket.