Surgery – Means and methods for collecting body fluids or waste material – Receptacle attached to or inserted within body to receive...
Patent
1992-02-05
1993-12-14
Green, Randall L.
Surgery
Means and methods for collecting body fluids or waste material
Receptacle attached to or inserted within body to receive...
604338, 604339, A61F 544
Patent
active
052697738
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a tight coupling device for ostomy.
AREA OF THE INVENTION
As is known, in some gastrointestinal or urinary surgical operations the patients have artificial openings made to which bags for receiving the residues are connected. These artificial openings are known as colostomies, urostomies or ileostomies, commonly designated by the term ostomy.
The device of this invention relates to a tight coupling for ostomy, of the type applicable in assemblies for ostomy which comprise a collecting bag with a central orifice, juxtaposable to a stoma and surrounded by an annular coupling element connected to the wall of said bag, which element has a double wall defining a channel with its opening oriented toward the stoma, which cooperates with a second annular coupling element integral with a plate adhering to the user's skin around the stoma, permitting very simple and convenient coupling/uncoupling at the user's discretion.
HISTORY OF THE INVENTION
The collecting ostomy bags and the accessories attached to them are preferably made of plastic materials, in view of their flexible and impermeable characteristics, among others.
The closure systems formed by obturation elements in the form of male and female ribs, both of plastic, capable of nesting one in the other offering an efficient closure and facilitating the opening of flexible bags generally of plastic material, are known and widely used in a variety of industrial sectors.
These types of closure systems are fully described by KABUSHIKI KAISHA SEISAN NIPPON-SHA, contained in Spanish Patents No. 279,517 of 1962 and Certificate of Addition No. 332,468 of 1966, and by MINIGRIF EUROPE AKTIESEISKAB contained in Spanish Patent No. 330,627 of 1967.
More concrete antecedents of the present invention in the sector where the latter applies are in the first place German patent No. 2,812,833 and in particular the embodiment thereof which is covered in Spanish Utility Model No. 238,930. Said patent concerns a device of the cited type which comprises two semirigid annular coupling elements, one joined to the plate which in turn adheres to the user's skin in the zone surrounding the stoma, and the second annular element fastened to a collecting bag, adopting a transverse section which defines a channel with its orifice oriented toward the stoma and with a projection on its outer wall which cooperates in interlock with a shoulder of a tubular neck which is integral with the first-mentioned annular element, so that as the two annular elements are being coupled, the neck of the first enters into the second having an obturation lip and providing a hermetic closure.
The device referred to has a first disadvantage relating to the cleaning of the annular element connected to the plate adhering to the user, since the shutting lip defines a cavity where residues may be retained, difficult to reach, and in any event involving manipulations which add to the user's discomfort.
Also, the proposed coupling will make it necessary for the user or the therapist to exert traction or apply pressure whenever the collecting bag must be replaced, causing the patient discomfort or pain, which should be eliminated.
Thirdly, the tubular neck of the described device is not rigid enough for the coupling to be classified as secure so that the bag will not come loose unintentionally in general by the patient's movements.
As to the imperviousness of the device it may also be objected that the same is supported exclusively by a lip defined on the element integral with the plate or patch adhering to the user and which is not changed every time the collecting bag is replaced, for which reason said lip may in time lose its effectiveness, with the possible deposition of residues in the concavity that it defines, as emphasized above.
A second antecedent of the invention can be found in U.S. Pat. No. 4,419,100, in which is discussed at length the problem of the necessary rigidity of the tubular neck combined with the flexible properties of the annular coupling elements necessar
REFERENCES:
patent: 5004464 (1991-04-01), Leise
Clarke Rob
Green Randall L.
Industrias Palex, S.A.
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