Medical appliance with centering balloon
AssigneeSchneider (Europe) A.G.
InventorsVitali Verin, Youri Popowski
Life of this patent
Estimating the term…
Abstract
The balloon catheter comprises a catheter tube surrounded distally by an elongated inflatable balloon. Throughout the catheter tube is a longitudinal lumen for positioning a radioactive radiation emitter within the balloon. The catheter comprises a second lumen for directing inflation fluid into the balloon. Belt means creating a waist are mounted on the balloon to squeeze it down to nearly the diameter of the catheter thereby leaving a small passage for the inflation fluid. The belt means divide the balloon into sections to assure a close center fit of the catheter within the balloon.
Claims30
A balloon catheter system for treatment of a portion of a blood vessel by ionizing radiation, comprising:
- an elongate radiation device having a distally disposed ionizing radiation emitter;
- a catheter shaft having a radiation device lumen sized to receive the elongate radiation device therein, the radiation device lumen extending from a proximal end of the shaft to a distal end of the shaft;
- and
- a balloon disposed about a distal portion of the shaft, the balloon having at least three lobes such that the catheter is substantially centered in the blood vessel, despite curvature thereof.
A balloon catheter system for treatment of a portion of a blood vessel by ionizing radiation, comprising:
- an elongate radiation device having a distally disposed ionizing radiation emitter;
- a catheter shaft having a radiation device lumen sized to receive the radiation device, the radiation device lumen extending from a proximal end of the shaft to a distal end of the shaft;
- and
- a balloon disposed about a distal portion of the shaft, the balloon having a proximal waist, a distal waist, and at least two intermediate waists such that the shaft is substantially centered in the balloon, despite curvature thereof.
A system for treatment of a portion of a blood vessel by ionizing radiation, comprising:
- an ionizing radiation emitter;
- and
- a balloon catheter, the balloon catheter comprising a shaft having a lumen sized to receive the ionizing radiation emitter and a balloon disposed about a distal portion of the shaft, the balloon having at least three lobes such that the catheter is substantially centered in the blood vessel, despite curvature thereof.
A system for treatment of a portion of a blood vessel by ionizing radiation, comprising:
- an ionizing radiation emitter;
- and
- a balloon catheter, the balloon catheter comprising a shaft having a lumen sized to receive the ionizing radiation emitter and a balloon disposed about a distal portion of the shaft, the balloon having a proximal waist, a distal waist, and at least two intermediate waists such that the shaft is substantially centered in the balloon, despite curvature thereof.
A method for treatment of a portion of a blood vessel by ionizing radiation, comprising the steps of:
- providing an ionizing radiation emitter;
- providing a balloon catheter, the balloon catheter comprising a shaft having a lumen sized to receive the ionizing radiation emitter and a balloon disposed about a distal portion of the shaft, the balloon having at least three lobes;
- inserting the balloon catheter into the blood vessel;
- inflating the balloon such that the catheter is substantially centered in the blood vessel, despite curvature thereof and
- inserting the ionizing radiation emitter into the lumen of the catheter for treatment of the blood vessel.
A method for treatment of a portion of a blood vessel by ionizing radiation, comprising the steps of:
- providing an ionizing radiation emitter;
- providing a balloon catheter, the balloon catheter comprising a shaft having a lumen sized to receive the ionizing radiation emitter and a balloon disposed about a distal portion of the shaft, the balloon having a proximal waist, a distal waist, and at least two intermediate waists such that the shaft is substantially centered in the balloon;
- inserting the balloon catheter into the blood vessel;
- inflating the balloon such that the catheter is substantially centered in the blood vessel, despite curvature thereof;
- and
- inserting the ionizing radiation emitter into the lumen of the catheter for treatment of the blood vessel.
A centering catheter for intravascular delivery of a radiation source for administering ionizing radiation to a blood vessel, the centering catheter comprising:
- an elongate shaft having a proximal portion, a distal portion and a radiation source lumen extending therebetween, the elongate shaft further having a guidewire lumen and an inflation lumen;
- an inflatable balloon disposed on a distal portion of the elongate shaft, wherein the balloon, when viewed in longitudinal cross-section, defines three or more lobes for substantially centering the catheter in the blood vessel despite curvature thereof.
A centering catheter for the administration of ionizing radiation to a blood vessel wall, comprising:
- an elongate shaft having a proximal end, a distal end and a radiation source lumen extending therebetween, the elongate shaft further having a guidewire lumen and an inflation lumen;
- and
- a balloon disposed about the distal end of the elongate shaft, wherein the balloon, when in an inflated state, forms multiple contact points with the vessel wall as viewed from a longitudinal cross-section for substantially centering the catheter in the blood vessel despite curvature thereof.
Dependencies are inferred from the claim text.