CATHETER SYSTEM WITH MOVABLE SLEEVE
First Claim
1. A catheter system suitable for insertion into a bodily vessel, comprising a catheter having a functional component and a movable sleeve in a distal region, wherein a diameter of the sleeve corresponds at least to the diameter of the functional component and a length of the sleeve is greater than the length of the functional component, further wherein the sleeve covers the functional component when the catheter system is in a state for introduction of the catheter into the bodily vessel, further wherein the catheter at least in the distal region has a shaft having a first, inner lumen and an outer, second lumen, characterized in that the outer second lumen is fluidly connected to at least one first balloon, and the first balloon is connected to the sleeve in such a way that a change to a fluid-filled volume of the first balloon induces a movement of the sleeve.
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Accused Products
Abstract
A catheter system for inserting a self-expanding stent into a bodily vessel. The catheter (1) has a movable sleeve (30), which holds the self-expanding stent in the space (2) when being positioned in the bodily vessel. As the self-expanding stent is released, the sleeve is pushed back by means of the application of fluid to the balloon (20). Here, the movable sleeve (30) can be moved proximally or distally in a precise manner by adjusting the pressure ratio in the balloons (20, 23). A controlled release and renewed capture of the self-expanding stent are possible accordingly.
29 Citations
10 Claims
- 1. A catheter system suitable for insertion into a bodily vessel, comprising a catheter having a functional component and a movable sleeve in a distal region, wherein a diameter of the sleeve corresponds at least to the diameter of the functional component and a length of the sleeve is greater than the length of the functional component, further wherein the sleeve covers the functional component when the catheter system is in a state for introduction of the catheter into the bodily vessel, further wherein the catheter at least in the distal region has a shaft having a first, inner lumen and an outer, second lumen, characterized in that the outer second lumen is fluidly connected to at least one first balloon, and the first balloon is connected to the sleeve in such a way that a change to a fluid-filled volume of the first balloon induces a movement of the sleeve.
Specification