Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1982-04-09
1984-02-14
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
604200, 604905, 2511499, A61M 500
Patent
active
044314248
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an arrangement in a sterilizing coupling, more precisely to a coupling of the type described and illustrated in the International Application PCT/SE80/00019.
Thus, in conjunction with FIG. 11 of the drawings in said International application, a coupling is shown in which a sterilizing action is obtained by utilizing a sealing ring prepared with a disinfectant, which gives off disinfectant to the coupling component which comes into contact with the ring during engagement. When using couplings of this type e.g. in conjunction with dialysis procedures the demands for sterility are extremely great.
The object of the present invention is thus to provide a coupling of the type referred to in the International Application PCT/SE80/00019, which is self-sterilizing during use. This object is achieved in accordance with the present invention in that the coupling has obtained the characteristics specified in claim 1.
To illustrate the invention this will be described in more detail in the following with reference to the accompanying drawings, in which
FIG. 1 shows a vertical section of the coupling in accordance with the invention before the coupling element is connected to the coupling housing;
FIG. 2 shows the coupling components according to FIG. 1 during initial engagement;
FIG. 3 shows the coupling in the engaged position which permits through-flow; and
FIG. 4 illustrates the coupling in a position wherein the coupling element is being disengaged from the coupling housing.
FIG. 1 shows the coupling element 1 and coupling housing 2 in a disengaged position. The coupling housing has a movable slide 3 in which at least one recess 4 is arranged for accommodating a cover, and the coupling element 1 has a cover 5 which is received for displacement in a groove. The more detailed design of the coupling is disclosed in the International Application PCT/SE80/00019.
The new feature of the coupling in accordance with the present invention is the arrangement of a casing 6 which is located around the coupling element 1. The casing 6 is preferably made from an elastic material, e.g. latex rubber, and extends up and over the cover 5. Two ring-shaped elements 7a and 7b with L-shaped cross section are arranged on both sides of the casing adjacent to the free end 6a of the casing 6. Instead of the two ring-shaped elements 7a and 7b a reinforcement can be moulded into the casing 6, which--similar to the elements 7a and 7b--is pushed in and sealingly rests against the internal peripheral surface of an abutment 8.
Inside the upper section of the casing 6 there is a disinfectant, e.g. spirit, which forms a barrier in respect of bacteria and also has a sterilizing effect on the coupling components during their engagement.
FIG. 2 illustrates the coupling components during initial engagement, whereby the disinfectant is present in the cavity 10. By making the casing 6 elastic, this will expand somewhat during the continued insertion of the coupling element 1 into the coupling housing 2.
FIG. 3 illustrates the two coupling components 1 and 2 in an engaged and locked position, said locking being achieved by displacement of the slide 3, i.e. the coupling permits free passage through both coupling components. However, external locking can also be provided between the coupling element 1 and the coupling housing 2, i.e. the coupling components should be capable of being locked in an engaged position without a free passage necessarily existing between the coupling components. This facilitates operation of the coupling by preventing the casing 6 pushing the coupling components apart. Such a locking device between the coupling components can for example comprise a spring lock, etc.
When separating the coupling components (FIG. 4), the disinfectant 9 collects in the folded portion 11 of the casing, which means that a thin film of disinfectant will be present between the outside wall of the coupling element 1 and the casing 6 when the coupling element is removed completely from the coupling housing 2.
The coupling e
REFERENCES:
patent: 3201148 (1965-08-01), Shurtleff
patent: 4022205 (1977-05-01), Tenczar
LandOfFree
Arrangement in a sterilizing coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement in a sterilizing coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement in a sterilizing coupling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2373305