Indwelling ureteral catheter

• US 3,938,529 A
• Filed: 07/22/1974
• Issued: 02/17/1976
• Est. Priority Date: 07/22/1974
• Status: Expired due to Term

• Current Assignee: Bonny Kenneth, Mentor Corporation (Johnson & Johnson), Stephen B. Paige
• Original Assignee: Robert P. Gibbons
• Inventors: Gibbons, Robert P.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/490,573
• Time in Patent Office: 575 Days
• Field of Search: 128/348, 128/349 R, 128/349 B, 128/350 R
• US Class Current: 604/8
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• 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 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 27/008 pre-shaped, for use in the urethral or ureteral tract

Abstract

A medical-grade, flexible tube is provided with a plurality of circumferentially and longitudinally spaced, flexible, directional anchoring protrusions for allowing the catheter to be moved lengthwise along a passage in one direction but to resist movement lengthwise out of the passage. Lateral apertures are provided at both ends of the tube for providing a fluid path into and out of the ends of the tube. An additional protrusion is provided at one end of the tube to resist lengthwise inward movement of the tube.

Claims

1. An indwelling ureteral catheter comprising a medical-grade, flexible tube of sufficient strength to minimize collapse of the walls of the tube, a plurality of apertures adjacent opposite ends of the tube, and a plurality of circumferentially and longitudinally spaced, flexible, directional anchoring means provided generally adjacent the longitudinal center of the tube for allowing movement of the tube in one direction but resisting movement of the tube in the opposite direction, said anchoring means including soft, flexible, resilient, laterally and axial outwardly directed tips of a length sufficient to span the distance between the tube and the sidewall of the ureter and flexed radially outwardly with sufficient force to wedge against the sidewall of the ureter and hold the tube against axial outward movement caused by gravity or peristaltic activity, said tips having sufficient flexibility and softness to flatten outwardly against the tube during intentional outward movement of the tube during withdrawal so as not to penetrate the sidewall of the ureter, whereby the tube can be inserted into the ureter in one direction, remain lodged against outward movement caused by peristaltic activity, but be safely removed when required.

2. The catheter of claim 1, said tube including a closed, smooth, conical, firm inner end for guiding the tube during insertion.

3. The catheter of claim 2, said anchoring means further including laterally extending, flexible and collapsible wing means at the outer end of the tube for providing resistance to movement of the tube in the outward direction for reducing inward migration of the tube.

4. The catheter of claim 1, including laterally extending, flexible and collapsible wing means at the outer end of the tube for resisting inward lengthwise movement of the tube in the ureter.

5. An indwelling ureteral catheter for an obstructed ureter comprising a medical-grade, flexible tube of sufficient strength to minimize collapse of the walls of the tube, a plurality of apertures adjacent opposite ends of the tube, and a plurality of axially and radially outwardly tapered, relatively large anchoring tips secured to the outside of the tube, said tips being located in approximately the axial central third of the tube and being spaced circumferentially and axially so as to provide an anchor regardless of the circumferential and longitudinal location of the obstruction along the ureter, said tips having sufficient resiliency and length to wedge radially outwardly against the sidewall of the ureter, but sufficient softness to collapse when the tube is moved axially inwardly of the ureter and collapse and not penetrate the sidewall of the ureter when the tube is moved intentionally axially outwardly of the ureter for removal of the catheter.

6. The catheter of claim 5, including laterally extended, flexible, circumferentially spaced wings attached to the axial outer end of the tube for resisting axial inward movement of the tube but being sufficiently flexible to collapse when intentionally radially compressed.