Method of shaping structures with an overcoat layer including female urinary catheter

• US 6,626,888 B1
• Filed: 09/26/1995
• Issued: 09/30/2003
• Est. Priority Date: 01/10/1990
• Status: Expired due to Fees

• 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): MENDEZ, MANUEL A
• Application Number:
  US08/533,911
• Time in Patent Office: 2,926 Days
• Field of Search: 604/514, 604/500, 604/517, 604/513, 604/511, 604/510, 604/509, 604/508, 604/93.01, 604/96.01, 604/264, 604/270, 604/523, 604/528
• US Class Current: 604/517
• CPC Class Codes: A61L 29/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 29/085 Macromolecular materials
• 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 2205/0238 the material being a coating or protective layer
• CPC Class Codes: A61M 2210/1092 Female
• 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 25/1027 Making of balloon catheters
• 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 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 method of catheterizing a patient, comprising:

urging a hand-actuated retention catheter into a body passageway from a space exterior thereto, said catheter comprising a 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, a fluid within the cavity, and a restriction collar with a shroud;

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

the overcoat layer being joined to the outer surface of the tube at distal and proximal ends of the cavity;

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

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

the collar being encircling the sleeve section to restrict flow in the sleeve portion of the cavity and the shroud encircling the reservoir section to limit the lateral ballooning thereof;

compressing the shroud-encircled reservoir section to force fluid through the sleeve portion to the balloon portion of the cavity; and

subsequently removing the collar with the shroud from the catheter to enable withdrawal of the catheter from the body passageway.

2. The method of claim 1 wherein the step of urging the catheter is a result of pushing a stylet inserted into the lumen of the inner tube.