Stiffened dilation balloon catheter device
First Claim
1. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
- a catheter section having a flow passage for pressurized liquid;
an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid;
passage means in said catheter section communicating said flow passage with said expandable chamber;
said expandable chamber having a wall section forming a cylindrical section when expanded;
a plurality of relatively rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber and movable with the wall of the expandable chamber; and
said stiffening members acting to maintain said cylindrical section to resist localized deformation in the surface of the expandable chamber.
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Accused Products
Abstract
The present invention sets forth a balloon catheter device adapted for use with catheters in angioplasty and/or valvuloplasty procedures which is expandable under fluid pressure and incorporates a plurality of stiffening means to resist deformation of isolated portions of the balloon when the balloon is expanded during the treatment procedure. Reinforcing means may also be provided to coact with the stiffening means to strengthen the balloon and/or to assist in the fixing of the location of the stiffening means. Various shapes and tapers of stiffening means can be provided to increase the effectiveness of the stiffening means and/or to reduce the change of damage to the balloon.
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Citations
26 Claims
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1. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
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a catheter section having a flow passage for pressurized liquid; an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid; passage means in said catheter section communicating said flow passage with said expandable chamber; said expandable chamber having a wall section forming a cylindrical section when expanded; a plurality of relatively rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber and movable with the wall of the expandable chamber; and said stiffening members acting to maintain said cylindrical section to resist localized deformation in the surface of the expandable chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
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a catheter section having a flow passage for pressurized liquid; an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid; passage means in said catheter section communicating said flow passage with said expandable chamber; said expandable chamber having a wall section forming a cylindrical section when expanded; a plurality of strengthening fibers connected to the wall of said expandable chamber and movable with the wall of the expandable chamber to increase the tolerance of the chamber for pressurized liquid to expand the chamber; a plurality of relatively rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber and movable with the wall of the expandable chamber; and said stiffening members acting to maintain said cylindrical section to resist localized deformation in the surface of the expandable chamber.
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19. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
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a catheter section having a flow passage for pressurized liquid; an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid; passage means in said catheter section communicating said flow passage with said expandable chamber; said expandable chamber having a wall section forming a cylindrical section when expanded; a strengthening mesh connected to the wall of said expandable chamber and movable with the wall of the expandable chamber to increase the tolerance of the chamber for pressurized liquid to expand the chamber; a plurality of relatively rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber and movable with the wall of the expandable chamber; and said stiffening members acting to maintain said cylindrical section to resist localized deformation in the surface of the expandable chamber.
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20. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
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a catheter section having a flow passage for pressurized liquid; an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid; passage means in said catheter section communicating said flow passage with said expandable chamber; said expandable chamber having a wall section forming a cylindrical section when expanded; a plurality of rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber disposed in parallel array and movable with the wall of the expandable chamber; a plurality of strengthening fibers connected to the wall of said expandable chamber and movable with the wall of the expandable chamber to increase the tolerance of the chamber for pressurized liquid to expand the chamber; and said stiffening members acting to maintain said cylindrical section to resist localized deformation in the surface of the expandable chamber. - View Dependent Claims (22, 23)
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21. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
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a catheter section having a flow passage for pressurized liquid; an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid; passage means in said catheter section communicating said flow passage with said expandable chamber; said expandable chamber having a wall section forming a cylindrical section when expanded; a plurality of rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber disposed in parallel array and movable with the wall of the expandable chamber; a strengthening mesh connected to the wall of said expandable chamber and movable with the wall of the expandable chamber to increase the tolerance of the chamber for pressurized liquid to expand the chamber; and said stiffening members acting to maintain said cylindrical section to resist localized deformation in the surface of the expandable chamber. - View Dependent Claims (24, 25)
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26. A balloon catheter for use in angioplasty and/or valvuloplasty procedures comprising:
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a catheter section having a flow passage for pressurized liquid; an expandable chamber connected to the catheter section having a wall for containing a pressurized liquid; passage means in said catheter section communicating said flow passage with said expandable chamber; said expandable chamber having a wall section forming an axially straight-walled tubular section when expanded; a plurality of relatively rigid stiffening members peripherally disposed and axially extending along said expandable chamber, said stiffening members connected along the length thereof to the wall of said expandable chamber and movable with the wall of the expandable chamber; and said stiffening members acting to maintain said axially straight-walled tubular section to resist localized deformation in the surface of the expandable chamber.
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Specification