Surgery – Means and methods for collecting body fluids or waste material – Receptacle attached to or inserted within body to receive...
Patent
1992-03-19
1994-06-21
Green, Randall L.
Surgery
Means and methods for collecting body fluids or waste material
Receptacle attached to or inserted within body to receive...
604332, 604338, 604339, A61F 544
Patent
active
053225228
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a locking ring for an ostomy coupling comprising a first part with a neck, a second part with a collar adapted to be coupled in tight-fitting relationship with the neck of the first part, one of said parts being intended to be attached to a patient, the other part being secured to a collection bag, the locking ring being adapted for mutually retaining said parts.
The invention is primarily constructed for use in connection with a lockable coupling for retaining ostomy equipment, such as bags for collection of evacuations from surgically formed, artificial intestinal orifices, and for retaining closure-like locking devices for such artificial body orifices.
Such couplings are usually annular and the part intended to be attached to a patient (in the following called the patient part) is often provided with a plate or flange applied with an adhesive by which the patient part is adhered to the patient's skin and which is generally changed at an interval of several days. The second part of the coupling, which is secured to a bag for collecting faeces, in the following called the bag part, must for obvious reasons be completely tight-fitting to the patient part.
EP 255 310 discloses an ostomy coupling with a locking ring providing a locking mechanism for the coupled parts but with no releasable locking mechanism for its retention to one of the parts to be coupled.
Manipulation of the coupling parts during assembling and disassembling may cause great pain especially to newly operated ostomy patients, and consequently it is important that such manipulation transfers as few and small force loads as at all possible to the patient. This need makes heavy demands on both the coupling parts and their locking mechanism.
Consequently, it is desirable to provide a locking mechanism for a coupling of the kind described allowing assembling and disassembling to be performed without causing heavy force loads, and in which the coupling parts are retained together by a locking mechanism which can be brought into and out of engagement in a simple way without causing any appreciable force load. It is furthermore important that the coupling besides the patient part and the bag part comprises no other loose or separate parts, so that assembling and disassembling can be performed quickly, in a simple and safe way.
It is the object of the present invention to provide a locking ring for an ostomy coupling, which meets these requirements.
According to the invention this object is achieved by a construction as stated in the characterizing portion of claim 1.
By the locking ring having two different locking mechanisms it is achieved that the patient when changing bag, which involves disassembling and assembling of the patient part and bag part of the coupling, operates the first locking mechanism, which in one position allows bag changing, and in the other position retains the bag part relatively to the patient part. As the two locking mechanisms are mutually independent, the second locking mechanism is not influenced when activating the first locking mechanism. To the patient this means that when changing bag the locking ring is always connected to one of the coupling parts so that there is no risk of it falling off. During assembling there is thus only two parts, viz. bag part and patient part, to be placed in correct mutual relationship.
In claims 2 and 3 are stated advantageous, different release operations for the two locking mechanisms.
In claim 4 is stated that the locking ring has radially resilient tongues. When changing bag these tongues ensure the centering of the locking ring relatively to the part to which it is secured, thus facilitating the positioning of the bag part.
In the following the invention is described in more detail, reference being made to the drawing in which
FIG. 1 shows a perspective view of a radial section of a part of a locking ring according to a preferred embodiment of the invention together with an ostomy coupling,
FIG. 2 shows the locking ring in a pre-locked position,
REFERENCES:
patent: 3869762 (1975-03-01), Barrett et al.
patent: 4623338 (1986-11-01), Larson
patent: 4973324 (1990-11-01), Steer
patent: 5026360 (1991-06-01), Johnson et al.
patent: 5180377 (1993-01-01), Holtermann
Clarke Rob
Coloplast A/S
Green Randall L.
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