Urinary catheter with reservoir shroud

• US 5,501,669 A
• Filed: 03/30/1995
• Issued: 03/26/1996
• Est. Priority Date: 01/10/1990
• Status: Expired due to Term

• Current Assignee: Rochester Medical Corporation (Becton, Dickinson & Co)
• Original Assignee: Rochester Medical Corporation (Becton, Dickinson & Co)
• Inventors: Conway, Anthony J., Fryar, Richard D. Jr., Conway, Philip J.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): CERMAK, ADAM
• Application Number:
  US08/413,499
• Time in Patent Office: 362 Days
• Field of Search: 604/96-103, 604/174, 604/178, 604/264, 604/280, 604/327, 604/328, 604/329, 600/29-31, 606/192-196
• US Class Current: 604/97.01
• CPC Class Codes: A61L 2300/22 Lipids, fatty acids, e.g. prostaglandins, oils, fats, waxes
• CPC Class Codes: A61L 2300/452 Lubricants
• CPC Class Codes: A61L 29/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 29/16 Biologically active materials, e.g. therapeutic substances A61L29/048 takes precedence
• CPC Class Codes: A61M 2025/0056 provided with an antibacterial agent, e.g. by coating, residing in the polymer matrix or releasing an agent out of a reservoir
• CPC Class Codes: A61M 2025/0062 having features to improve the sliding of one part within another by using lubricants or surfaces with low friction
• CPC Class Codes: A61M 2025/1031 Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface
• CPC Class Codes: A61M 2025/1075 having a balloon composed of several layers, e.g. by coating or embedding
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• 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 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: A61M 25/10183 Compressible bulbs
• CPC Class Codes: A61M 25/1027 Making of balloon catheters
• CPC Class Codes: A61M 25/1029 Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
• CPC Class Codes: A61M 25/1036 Making parts for balloon catheter systems, e.g. shafts or distal ends A61M25/1029 takes precedence
• CPC Class Codes: B29C 2791/001 Shaping in several steps
• CPC Class Codes: B29C 41/14 Dipping a core B29C41/10 takes precedence
• CPC Class Codes: B29C 41/22 Making multilayered or multicoloured articles
• CPC Class Codes: B29K 2083/00 : Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
• CPC Class Codes: B29K 2083/005 : LSR, i.e. liquid silicone rubbers, or derivatives thereof
• CPC Class Codes: B29L 2031/7542 : Catheters
• CPC Class Codes: C08L 83/04 : Polysiloxanes

Abstract

A method of shaping polymeric structures by coating a support structure with a bond-preventing agent to attain a particular shape and subsequently coating the shaped structure of the bond-preventing agent with a polymeric bonding composition is provided. Such shaped polymeric structures can have one or more cavities which can be fluid-filled or gel-filled. Also provided is a hand-actuating retention female urinary catheter having an inner tube and an outer overcoat layer encircling the tube with an elastomeric collar with a shroud. A cavity containing a fluid is interposed between the tube and the overcoat layer. The cavity includes a balloon portion and a reservoir portion. The shroud encircles the reservoir section to inhibit the ballooning of the reservoir section when the reservoir section is squeezed to force fluid from the reservoir portion to the balloon portion through the sleeve portion of the cavity. The overcoat layer and the collar with a shroud are made of soft resilient material.

Claims

1. A hand-actuated retention catheter, comprising:

a tube having a proximal end and a distal end, the tube having outer and inner surfaces, the inner surface defining an inner lumen, an overcoat layer encircling the tube, the overcoat layer having interior and exterior surfaces, a cavity interposed between the tube and the overcoat layer, said cavity encircling the tube and being defined by portions of the outer surface of the tube in cooperation with portions of the interior surface of the overcoat layer, a fluid within the cavity, a restriction means and a means for limiting the lateral ballooning of the reservoir section;

wherein the overcoat layer includes an expandable, resilient balloon section proximate a distal end, the fluid reservoir section proximal thereto, and a catheter sleeve section interconnecting said balloon section and said reservoir section, each of the sections corresponds to a corresponding section of the catheter;

the cavity including a balloon portion, a fluid reservoir portion, and a catheter sleeve portion thereof interconnecting said balloon portion and said reservoir portion;

the catheter sleeve section of the overcoat layer defines a narrowing in the cavity through which fluid passing from the fluid reservoir portion and the balloon portion thereof must pass;

the restriction means encircling the sleeve section to restrict the flow of fluid from the balloon portion to the fluid reservoir portion of the cavity, and the means for limiting lateral ballooning encircling the reservoir section to limit the lateral ballooning thereof, said means for limiting lateral ballooning not substantially restricting the flow of fluid from the balloon portion to the fluid reservoir portion of the cavity.

2. The catheter of claim 1 wherein the restricting means is a restrict collar and the means for limiting lateral ballooning is a cylindrical shroud.

3. The catheter of claim 2 wherein the collar and the shroud are unitarily and integrally connected.

4. The catheter of claim 2 wherein the collar and the shroud are made of silicone rubber.

5. The catheter of claim 1 wherein the restriction means and the means for limiting lateral ballooning are capable of being removed from the catheter by being pulled to slip along the catheter direction toward the proximal end of the tube.

6. The catheter of claim 1 wherein the tube and the overcoat are made with a silicone rubber.

7. The catheter of claim 6 wherein the silicone rubber overcoat has 20-40 durometer hardness and a wall thickness of 0.1-1 mm.

8. The catheter of claim 6 further comprising a stylet, a portion of which is removably disposed in the inner lumen of the tube for urging the catheter during deployment thereof.

9. The catheter of claim 1 wherein said tube has an opening proximate the distal end.