Balloon connection and inflation lumen for atherectomy catheter

• US 5,470,415 A
• Filed: 04/08/1993
• Issued: 11/28/1995
• Est. Priority Date: 02/28/1990
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Devices for Vascular Intervention, Inc. (Eli Lilly and Company)
• Inventors: Perkins, Roger W., Chatelain, Gerri L.
• Primary Examiner(s): Maki, Steven D.
• Application Number:
  US08/045,480
• Time in Patent Office: 964 Days
• Field of Search: 156/196, 156/293, 156/294, 156/296, 156/290, 156/212, 156/221, 156/252, 606/159, 606/170, 606/180, 606/191, 606/192, 606/194, 604/96, 604/101, 604/103, 264/248, 264/249, 264/267, 264/295, 264/339, 285/156
• US Class Current: 156/196
• CPC Class Codes: A61B 17/320783 through side-hole, e.g. sliding or rotating cutter inside catheter
• CPC Class Codes: A61B 2017/22052 eccentric
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22075 with motorized advancing or retracting means
• CPC Class Codes: A61M 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: B29C 65/48 using adhesives , i.e. using supplementary joining material; solvent bonding
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/1222 comprising at least a lapped joint-segment
• CPC Class Codes: B29C 66/1224 comprising at least a butt joint-segment
• CPC Class Codes: B29C 66/131 Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
• CPC Class Codes: B29C 66/24221 being circular B29C66/51 takes precedence
• CPC Class Codes: B29C 66/532 Joining single elements to the wall of tubular articles, hollow articles or bars
• CPC Class Codes: B29C 66/61 Joining from or joining on the inside for making tubes by bending sheets and joining from the inside B29C53/387
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/81455 being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure inflatable element positioned between the joining tool and a backing-up part B29C66/82421
• CPC Class Codes: B29K 2023/06 PE, i.e. polyethylene
• CPC Class Codes: B29K 2027/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B29K 2067/003 PET, i.e. poylethylene terephthalate
• CPC Class Codes: B29K 2075/00 Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2077/00 : Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2031/7542 : Catheters
• CPC Class Codes: Y10T 156/1002 : with permanent bending or reshaping or surface deformation of self sustaining lamina
• CPC Class Codes: Y10T 156/1028 : by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
• CPC Class Codes: Y10T 156/1043 : Subsequent to assembly

Abstract

A vascular catheter includes a flexible catheter body having proximal and distal ends and an elongate housing secured to the distal end of the catheter body. An interactional device is disposed on one side of the housing, and at least two spaced-apart inflatable chambers are located on the other side of the housing generally at its proximal and distal ends, respectively. The inflatable chambers may be expanded simultaneously or separately, and the spaced-apart positioning of the chambers provides for stable positioning of the housing during atherectomy procedures, imaging procedures, and the like. The balloon is conveniently connected to the housing by an integral flange structure which is secured through an inflation aperture on the housing side. The balloon may be inflated through an annular inflation which is defined by a separate isolation tube disposed in the central lumen of the catheter body.

Claims

1. A method for joining an inflatable balloon to a cylindrical housing having an interior surface and an axial lumen, said method comprising:

inserting an end of a thermoplastic tube through an aperture in the housing;

positioning a rod through the thermoplastic tube so that an end of the rod is disposed in an interior of the housing;

inserting a heated mandrel axially into the housing through an open end of the housing;

contacting the heated mandrel against the end of the thermoplastic tube to form a saddle flange which conforms to the interior surface of the housing;

wherein the rod maintains an open passage from the interior of the housing to the interior of the tube; and

forming the tube into a balloon.

2. A method as in claim 1, further comprising gluing the flange to the interior surface of the housing.

3. A method as in claim 1, further comprising joining another end of the tube to the housing.

4. A method as in claim 1, wherein the balloon is formed to have at least two spaced-apart inflation chambers.

5. A method as in claim 1, wherein the balloon is formed to have a single substantially continuous inflation chamber.