Surgery – Means and methods for collecting body fluids or waste material – Receptacle attached to or inserted within body to receive...
Patent
1995-12-29
1997-11-11
Clarke, Robert A.
Surgery
Means and methods for collecting body fluids or waste material
Receptacle attached to or inserted within body to receive...
604352, A61F 544
Patent
active
056858701
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an external urinary catheter for the relief of male urinary incontinence and of the kind comprising a discharge spout for connection with a hose and, integrally connected therewith, a catheter member having a short axial extent, and an inner contact surface fitting the shape of the head (glans) of a penis so as to be arrangeable, in use, in a position under the foreskin and in which it is in surface contact with the head (glans) to cover only the extreme portion thereof outside the point where glans has its largest diameter.
For the relief of male urinary incontinence external catheters are generally used in the form of condomlike tubular sheaths to be placed externally on penis and having a discharge spout which via a hose is connected with a urine collection bag.
Such external catheters are known in numerous designs and in many cases serve as a satisfactory solution of male incontinence problems. The complete envelopment of penis may, however, give rise to troubles, partly because the application (which is effected by unrolling the catheter) requires a certain length of penis, and partly in use due to the fact that the envelopment of the full length of penis with the catheter which is generally fastened adhesively either by means of a separate adhesive strip or by means of an internal adhesive layer involves strain of the skin and the constantly humid environment from the delivered urine entail skin problems, such as allergy and maceration and in worst case ulceration.
The application problem entails that conventional external catheters cannot be used by incontinence patients having a too small or retracted penis.
Published patent application GB-A-2075847 proposes an external male urinary catheter in the form of a relatively short funnel-like uridom device which is placed directly against the glans of the penis throughout its length, but nevertheless envelops glans and is kept in place under the foreskin. Around a discharge spout of the device, an external sheath is fastened which after the application of the catheter is brought into abutment with the outer side of the foreskin so that the whole device is kept in place by the position of the foreskin between the inner catheter element and the external sheath.
As conventional catheters of the above-mentioned kind, said prior art urinary catheter requires a relatively accurate adaptation to the anatomy of the user and must thus, inter alia, be manufactured in various sizes. The manufacturing which may be effected by injection moulding is further complicated by the integrated design of the inner catheter member and the outer holder member. The complete envelopment of glans penis with the catheter member, whereby the proximal end edge thereof which is provided with a bead is placed against the relatively sensitive skin band between glans and foreskin, may in use give rise to considerable nuisance. Furthermore, the fixation principle entails the risk that the catheter might fall off in use in the case of a pull, e.g. from the collection bag connected with the discharge spout, or compressive load in connection with the urination.
U.S. Pat. No. 4,640,688 discloses a catheter member of the above-mentioned kind having such a short axial extent that in use it only covers the extreme portion of glans to which it is fastened by means of an adhesive which in a manner known per se may be applied in the form of a coating on the inner side of a cup-shaped part of the catheter. The need for an adhesive connection makes such a catheter unpleasant in use, because the above problems with skin strain have not been eliminated.
DE-C-520,401 discloses a catheter in the form of a conical sealing cap to be placed under the foreskin in contact with the glans and retained in place by means of a strip applied to the external side of the foreskin.
GB-A-2 126 483 discloses a urine ducting device in the form of a tubular member, e.g. of silicone rubber, which in use is arranged outside the glans in extension thereof, so that a rathe
REFERENCES:
patent: 4388923 (1983-06-01), Heimreid
patent: 4640688 (1987-02-01), Hauser
Clarke Robert A.
Coloplast A/S
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