Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1997-12-05
2000-05-16
Coggins, Wynn Wood
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 93, 604264, A61M 1100, A61M 500
Patent
active
060630639
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a catheter comprising a tubular part having a proximal end and a distal end, at least one inlet opening at the proximal end, at least one outlet opening at the distal end, and comprising a closure for closing the at least one outlet opening.
Such catheters are used for numerous purposes within the field of medical care. One area towards which the present invention is especially directed is the urology area.
In case of a urethral disorder in the form of a urethral stricture, i.e. prostatic hypertrophy in a male patient, it is required to use a catheter in order to empty the urine bladder. The catheter is inserted into the urine bladder through the urethra.
From GE 2 230 702 an example of such a urethral catheter is known. Since there are no means provided for blocking the flowpath, it is obvious that the urine flow through the catheter will start as soon as the opening at the proximal end of the catheter enters the bladder.
This means that the insertion of the catheter must take place over a receptacle for the urine, which of course makes the use of the catheter difficult.
U.S. Pat. No. 3,794,042 discloses a urethral catheter/receptacle-construction for self-catheterization and comprising a valve for controlling the flow through the catheter and out into a receptacle. The valve is very complex and its operation requires two hands.
U.S. Pat. No. 5,087,252 discloses a catheter of the type described in the introductory part of the description. This previously known catheter comprises a complex closing mechanism having several parts. This means that the catheter manufacturing is time consuming and that the operation not always can be regarded as reliable.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a catheter which is simple and at the same time allows for an easy and reliable operation by the user.
According to the invention this object is obtained with a catheter of the type mentioned in the introductory part and which is characterised in that the closure is connected to the tubular part by a first hinge, where a part of said closure extends beyond said first hinge, a in respect of the tubular part radially projecting part, an operation handle connected to the catheter by means of a second hinge at the end of the closure extension and a third hinge at the radially projecting part, the total length of closure extension and the operation handle exceeding the rectilinear distance between the first and the third hinges.
The catheter according to the invention provides a simple construction which can be inserted and operated by one hand of the user and at a convenient site, not necessarily over a receptacle for the urine or other body fluids. The opening/closing mechanism further gives the user the feeling of controlling the urination.
In a preferred embodiment of the catheter according to the invention the radially projecting part forms a handle for the insertion of the catheter and minimizes the risk of contamination of the tubular part. This feature facilitates the insertion of the catheter. Preferably the catheter comprises a stop plate for limiting the insertion distance of the catheter, which stop plate is advantageously constructed integrally with the handle. The stop plate prevents the user from inserting the catheter towards the opposing wall of the bladder and the thus inflicted discomfort is avoided.
The closure with its extension forms an essentially rigid part where, relative to a straight line between the hinge axis for the closure and the hinge axis at the radially projecting part in a closed position for the closure, the extension has a preferred angled configuration in the closing direction for the closure.
Preferably, the handle part connected at one side to the closure extension and at the other side to the radially projecting part has a length exceeding the rectilinear distance between the hinge axes at the locations in order to perform a spring action on closure extension hereby ensuring the closed position
REFERENCES:
patent: 3794042 (1974-02-01), De Klotz et al.
patent: 4685901 (1987-08-01), Parks
patent: 4822333 (1989-04-01), Lavarenne
patent: 5087252 (1992-02-01), Denard
patent: 5234409 (1993-08-01), Goldberg et al.
patent: 5385372 (1995-01-01), Utterberg
patent: 5674209 (1997-10-01), Yarger
patent: 5817067 (1998-10-01), Tsukada
Harboe Henrik
Othel-Jacobsen Erik
Coggins Wynn Wood
Engineers & Doctors A/S
Hayes Michael J.
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