Method of catheterization on and bladder drainage

• US 5,306,241 A
• Filed: 12/13/1991
• Issued: 04/26/1994
• Est. Priority Date: 08/16/1990
• Status: Expired due to Fees

• Current Assignee: Charles R. Samples
• Original Assignee: Charles R. Samples
• Inventors: Samples, Charles R.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): CERMAK, ADAM
• Application Number:
  US07/807,257
• Time in Patent Office: 865 Days
• Field of Search: 604/49, 604/54, 604/55, 604/96-103, 604/171-175, 604/276, 604/278, 604/349, 604/351-353, 600/29-32, 128/DIG. 25
• US Class Current: 604/544
• CPC Class Codes: A61M 2025/0175 having telescopic features, interengaging nestable members movable in relations to one another
• CPC Class Codes: A61M 2025/09183 having tools at the distal tip
• CPC Class Codes: A61M 25/0017 specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
• CPC Class Codes: A61M 25/0075 Valve means
• CPC Class Codes: A61M 25/0082 Catheter tip comprising a tool
• CPC Class Codes: A61M 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence

Abstract

A catheter assembly for collecting fluid from a tubular organ into a drainage system includes a tubular body portion (12) having an end portion (14) and an intermediate portion (16) adjacent thereto. The end portion (14) includes a retaining balloon (30) for retaining the intermediate portion (16) within the tubular organ. The intermediate portion (16) includes a portion having an outer diameter smaller than the inner diameter of the catheterized tubular organ for allowing the free flow of fluid from the tubular organ and over the intermediate portion (16) to maintain the tubular organ infection free. A collection mechanism is operatively connected to the intermediate portion (16) and spaced from the end portion (14). The collection mechanism is insertable into the tubular organ for collecting the fluid flowing over the intermediate portion (16) and preventing fluid from escaping from the drainage system. A method of using the catheter assembly (10) is also disclosed.

Claims

1. A catheter assembly (10) for collecting urine from a urethra into a drainage system, said catheter assembly (10) comprising:

a first tubular body portion (12) having an end portion (14) and an intermediate portion (16) adjacent thereto, said intermediate portion (16) having an outer surface, said end portion (14) including retaining means for retaining said intermediate portion (16) within the urethra, said intermediate portion (16) including flow means for allowing the free flow of urine from the bladder (18) and over the intermediate portion (16) and through the urethra (20) to maintain an infection free bladder (18) and urethra (20); and

a second tubular member (22) including a collection end portion (26) operatively connected about and containing a portion of said intermediate portion (16) and spaced from said end portion (14), said collection end portion (26) being insertable at the ostium of the urethra (20) for collecting the fluid flow over said intermediate portion (16) and preventing the fluid from escaping from the draining system, said collection end portion (26) forming a tubular channel for fluid flow between said collection end portion (26) and said outer surface of said intermediate portion (16) contained therein, said second tubular member (22) including a distal portion (29) spaced from said collection end portion (26), and a collapsible portion interposed between said collection end portion (26) and said distal portion (29) for allowing sliding movement of said collection end portion (26) relative to said end portion (14) of said first tubular body portion without relative movement of said first tubular body portion (12) with respect to the distal portion (29) of said second tubular member (22) and flexing of the collapsible portion for allowing said distal portion to bend off axis with respect to the collection end portion (26);

said free flow means for allowing the free flow of urine through said collapsible portion and through said distal portion (29).

2. A catheter as set forth in claim 1 wherein said intermediate portion (16) has an outer diameter smaller than an inner diameter of a human urethra for allowing the flow of urine herebetween, said second tubular member (22) including a plug end portion for insertion into the ostium of the urethra (20) for preventing urine from escaping from said catheter assembly (10) and collecting the flowing urine into said fluid passageway (24).

3. A catheter as set forth in claim 2 wherein said second tubular member (22) includes flexible circular sealing flange means extending radially outwardly therefrom for perfecting a seal against the wall of the urethra (20) to prevent leakage of urine between the urethra (20) and the portion of said second tubular member (22) inserted therein.

4. A catheter as set forth in claim 3 wherein said means includes at least one flexible circular flange extending radially outwardly from said second tubular member (22).

5. A catheter as set forth in claim 1 wherein said intermediate portion (16) includes an inflatable portion (30) adjacent said end portion (14) of said first tubular body portion (12) defining said retaining means, said intermediate portion (16) being hollow and including a second fluid passageway (32) in fluid communication with said inflatable portion (30) for allowing the passage of fluid therethrough for inflation of said inflatable portion (30).

6. A catheter as set forth in claim 5 wherein said intermediate portion (16) includes opening means for retaining the sphincter adjacent the bladder (18) open for allowing urine flow from the bladder through the urethra and allowing flow of urine between said inflatable portion (30) and the bladder wall sphincter opening and bladder opening to the urethra (20).

7. A catheter as set forth in claim 6 wherein said opening means includes a plurality of pleats (34) on said inflatable portion (30) adjacent said intermediate portion (16) and extending parallel relative to the extending length of said first tubular body portion (12), said pleats (34) forming ribs extending radially outwardly from said inflatable portion (30) adjacent to said intermediate portion (16) when said inflatable portion is inflated and defining fluid flow channels therebetween.

8. A catheter as set forth in claim 7 wherein said intermediate portion (16) includes second opening means for opening a constricted portion of the urethra and allowing flow of urine therethrough over said intermediate portion (16).

9. A catheter as set forth in claim 8 wherein said second opening means includes a plurality of second ribs (36) extending radially outwardly from said intermediate portion (16'"'"') and parallel relative to the length thereof;

said ribs defining second fluid flow channels therebetween.

10. A catheter as set forth in claim 5 wherein said end portion (14") includes an opening (38) therethrough and a third fluid passage (40) in fluid communication therewith, said third fluid passageway (40) extending through said inflatable portion (30"), said third fluid passageway (40) including an opening (42) to said intermediate portion (16) for allowing the free flow of urine from the bladder (18), through said inflatable portion (30"), and out over said intermediate portion (16) for irrigating the bladder and urethra.

11. A catheter as set forth in claim 10 further including valve means with said third fluid passageway (40) for selectively blocking the flow of fluid therethrough and selectively opening the previously blocked flow of fluid to enable a rigorous washing action along the length of said intermediate portion (16) by the built-up amount of the fluid.

12. A catheter as set forth in claim 11 wherein said valve means includes an inflatable balloon (52) disposed within said third passageway (40) and fluid supply lumen (57) operatively connected thereto and disposed within said intermediate portion for connection to a fluid source.

13. A urethra catheter assembly (10) for collecting urine from a urethra into a drainage system, said catheter assembly comprising:

a collection tube (26) insertable at the ostium of the urethra for collecting fluid therein and preventing fluid from escaping from said assembly (10) and at least one thin annular flexible circular flange (27) extending radially outwardly from said collection tube (26) and constructed to be resiliently flexible towards and away from said collection tube (26) for perfecting a seal against the wall of the urethra (20) to prevent leakage of fluid between the urethra (20) and the portion of the collection tube (26) inserted therein, said tube (26) slidably receiving a tube member (16) therein that forms a fluid passage (24) therebetween.

14. A method of catheterizing a patient for collecting fluid into a drainage system including the steps of:

inserting a collecting tube (26) into the ostium of the urethra, the collecting tube (26) including flexible circular flanges (27) extending radially outwardly therefrom, the flanges (27) laying against an adjacent surface of the collecting tube (26) in a direction away from the patient'"'"'s bladder (18);

retracting the collecting tube (26) sufficiently to force the flanges (27) to reverse the direction of the flange (27) towards the patient'"'"'s bladder (18), fluid flow in the urethra opening the flanges (27) to perfect a seal between the collecting tube (28) and the urethra (20).

15. A urethra catheter comprising:

a catheter intermediate member having an outer diameter smaller than an internal diameter of a hydro-dynamically inflated human urethra for allowing urine flow circumferentially about the entire exterior circumference of the catheter intermediate member;

a retainer at an axial inner end of said catheter intermediate member for retaining said inner end of said intermediate member within a human bladder;

a tubular collection member mountable at a downstream end of said human urethra having an open axial inner end and a sealing device about an outer diameter to prevent fluid flow about and around said collection member;

said intermediate member extending through said axial inner end of said collection member and forming an annular channel between said intermediate member and said tubular collection member to provide flow of urine therethrough;

said tubular collection member having an open distal end to allow urine flow through said annular channel from said human urethra.

16. A urethra catheter as defined in claim 15 further comprising;

said collection member includes a first axially positioned inner tube and a second axially positioned outer tube spaced from said first tube and a collapsible section therebetween with said collapsible section forming a section of outer wall for said annular channel for urine flow therethrough

said intermediate portion affixedly mounted to said axially outer tube member and slideable with respect to said axially inner tube member.