Balloon configuration for atherectomy catheter

• US 5,092,873 A
• Filed: 02/28/1990
• Issued: 03/03/1992
• Est. Priority Date: 02/28/1990
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated
• Original Assignee: Devices for Vascular Intervention, Inc.
• Inventors: Simpson, John B., Mueller, Richard L.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Gutowski, Anthony
• Application Number:
  US07/486,675
• Time in Patent Office: 734 Days
• Field of Search: 604/22, 604/53, 604/95, 604/96, 604/101, 604/49, 606/7, 606/159, 606/170, 606/180, 606/191, 606/192, 606/194
• US Class Current: 606/159
• 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 65/18 using heated tools
• CPC Class Codes: B29C 65/305 involving the use of cartridge heaters
• 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

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 simutaneously 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.

Claims

1. A catheter comprising:

a flexible catheter body having proximal and distal ends;

an elongate housing having proximal and distal ends, said housing being secured at its proximal end to the distal end of the catheter body and having an aperture on one side thereof;

interactional means disposed within the housing for removing stenotic material which penetrates the aperture;

at least two spaced-apart inflatable chambers located generally at the proximal and distal ends of the housing on a side opposite to that of the aperture and

means for inflating the inflatable chambers.

2. A catheter as in claim 1, wherein the at least two inflatable chambers are interconnected so that they are inflated simultaneously by the inflation means.

3. A catheter as in claim 1, wherein the interactional means includes a blade and means for moving the blade past the aperture.

4. A catheter as in claim 3, wherein the blade is circular and the means for moving includes a drive cable for rotating and translating the blade past the aperture.

5. A catheter as in claim 1, wherein the inflatable chambers each have a length in the range from about 2 to 15 mm and are separated by a length in the range from about 4 to 30 mm.

6. A method for removing stenotic material from a blood vessel, said method comprising:

positioning a catheter housing having an aperture on one side thereof proximate a stenosed region within a patient'"'"'s vascular system;

inflating a pair of axially spaced-apart inflatable chambers on a side of the housing opposite to that of the aperture to urge stenotic material into the housing; and

translating a cutting blade across the aperture to sever the stenotic material.

7. A method as in claim 6, wherein the inflatable chambers are inflated to the same pressure.

8. A method as in claim 6, wherein the inflatable chambers are inflated to different pressures selected to stabilize the cutter housing.

9. A method as in claim 6, further comprising inflating a third inflatable chamber located between said spaced-apart balloon chambers in order to change the position of the housing.