Angioplasty apparatus
OwnerPaul L. Carbo, John F. Setaroinventors
Life of this patent
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Abstract
An angioplasty apparatus for removing abnormal deposits such as atheromatic plaque from the internal arterial walls is provided. The apparatus includes an elongated, flexible mechanism for insertion in an artery to the location of plaque deposit. Two inflatable occluder balloons are provided to be positioned at either ends of the plaque section and inflated to seal off the section. A milling balloon is adapted to be positioned in the plaque section to be rotated and bear against an expandable milling surface which is gradually expanded as the plaque deposit is milled away. Because of the sealing balloons, the plaque particles are prevented from passing into the arterial stream and may be taken away through a tubular channel.
Claims9
An angioplasty apparatus for removing deposits of atheromatic plaque from the interior walls of blood vessels comprising:
- an elongated flexible catheter having an outer end adapted to be inserted into a blood vessel to the location of a plague deposit section of the vessel including;
- a hollow wire within the catheter extending the length thereof and providing a first channel;
- an inflatable distal balloon secured to the outer end of the guide wire and adapted to be inflated by fluid passing through the first channel;
- tube means surrounding the guide wire and extending the length of the catheter and having a second channel extending a substantial length thereof;
- a drive cable surrounding the tube means;
- a section of the drive cable being radially expandable;
- the outer surface of said drive cable section being roughened to form a milling surface;
- said second channel terminating at the said drive cable section whereby the section may be radially expandable by fluid passing through said second channel;
- sheath means surrounding the drive cable and extending the length of the catheter and having a third channel extending a substantial length thereof;
- an inflatable proximal balloon surrounding said sheath means at the outer end thereof connected to the third channel and adapted to be inflated by fluid passing therethrough;
- means connected to the drive cable to cause rotation thereof whereby the expanded section will mill the atheromatic plague on the interior blood vessel wall producing free particles of plague;
- the space between the sheath means and drive cable providing a fourth channel to withdraw the free plague particles, and
- means to selectively supply fluid pressure to said first, second and third channels to inflate the distal balloon, expand the cable section and inflate the proximal balloon respectively.
An angioplasty apparatus for removing deposits of atheromatic plaque from the interior walls of blood vessels comprising:
- an elongated flexible catheter having an outer end adapted to be inserted into a blood vessel to the location of a plague deposit section of the vessel including;
- tube means extending the length of the catheter and having a channel extending a substantial length thereof;
- a flexible drive cable surrounding the tube means;
- a section of the drive cable being radially expandable;
- the outer surface of said drive cable section being roughened to form a milling surface;
- said channel terminating at the said drive cable section whereby the section may be radially expandable by fluid under pressure passing through said channel;
- and
- means connected to the drive cable to cause rotation thereof whereby the expanded section will mill the atheromatic plaque on the interior blood vessel wall producing free particles of plague.
An angioplasty apparatus for removing deposits of atheromatic plague from the interior walls of blood vessels comprising:
- an elongated flexible catheter having an outer end adapted to be inserted into a blood vessel to the location of a plague deposit section of the vessel including:
- a hollow wire within the catheter extending the length thereof and providing a first channel;
- an inflatable distal balloon secured to the outer end of the guide wire and adapted to be inflated by fluid under pressure in the first channel;
- tube means surrounding the guide wire and extending the length of the catheter and having a second channel extending a substantial length thereof;
- a drive cable surrounding the tube means;
- the outer surface of said drive cable having a section being roughened to form a milling surface;
- said second channel terminating at the said drive cable section whereby the section may be radially expandable by fluid passing through said second channel;
- sheath means surrounding the drive cable and extending the length of the catheter and having a third channel extending a substantial length thereof;
- an inflatable proximal balloon surrounding said sheath means at the outer end thereof connected to the third channel and adapted to be inflated by fluid under pressure in said third channel;
- means connected to the drive cable to cause rotation thereof whereby the expanded section will mill the atheromatic plague on the interior blood vessel wall producing free particles of plaque;
- means to selectively supply fluid pressure to said first, second and third channels to inflate the distal balloon, expand the cable section and inflate the proximal balloon respectively.
Dependencies are inferred from the claim text.