Everting balloon for medical devices
First Claim
1. A device for removing a kidney stone from a urinary tract in a human or animal subject, the device comprising:
- a handle;
a retention member slider coupled with the handle;
an elongate, flexible, outer shaft having a distal end and a proximal end, wherein the outer shaft defines a longitudinal axis extending between the distal and proximal ends;
a lumen wall protection member shaft coaxially disposed within the outer shaft;
an inflatable balloon, comprising;
a proximal attachment portion coupled with the distal end of the outer shaft;
a proximal tapered portion immediately adjacent the proximal attachment portion, having a first longitudinal length, measured along the longitudinal axis;
a central cylindrical portion immediately adjacent the proximal tapered portion, having a second longitudinal length, measured along the longitudinal axis;
a distal tapered portion immediately adjacent the central cylindrical portion, having a third longitudinal length, measured along the longitudinal axis; and
a distal attachment portion immediately adjacent the distal tapered portion, coupled with a distal end of the lumen wall protection member shaft,wherein the second longitudinal length is longer than the first longitudinal length, and the first longitudinal length is longer than the third longitudinal length;
at least one eversion feature configured to facilitate preferential eversion of the distal tapered portion of the inflatable balloon into an inside of the balloon, rather than the proximal tapered portion, wherein the at least one eversion feature comprises a greater thickness of material on the proximal tapered portion as compared to the distal tapered portion; and
an expandable obstruction retention member extending coaxially within the lumen wall protection member shaft and attached proximally to the retention member slider.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for removing an obstruction from a lumen in a human or animal subject may include an inflatable balloon. The inflatable balloon may include a proximal tapered portion having a proximal taper angle, a central portion, and a distal tapered portion having a distal taper angle that is greater than the proximal taper angle. The balloon may also include at least one eversion feature on the proximal tapered portion and/or the distal tapered portion. The eversion feature may facilitate preferential eversion of the distal tapered portion into an inside of the balloon without the proximal tapered portion collapsing. Preferential eversion of the distal tapered portion may be provided by the differences in the distal and proximal taper angles and by one or more of a number of different types of eversion features.
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Citations
14 Claims
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1. A device for removing a kidney stone from a urinary tract in a human or animal subject, the device comprising:
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a handle; a retention member slider coupled with the handle; an elongate, flexible, outer shaft having a distal end and a proximal end, wherein the outer shaft defines a longitudinal axis extending between the distal and proximal ends; a lumen wall protection member shaft coaxially disposed within the outer shaft; an inflatable balloon, comprising; a proximal attachment portion coupled with the distal end of the outer shaft; a proximal tapered portion immediately adjacent the proximal attachment portion, having a first longitudinal length, measured along the longitudinal axis; a central cylindrical portion immediately adjacent the proximal tapered portion, having a second longitudinal length, measured along the longitudinal axis; a distal tapered portion immediately adjacent the central cylindrical portion, having a third longitudinal length, measured along the longitudinal axis; and a distal attachment portion immediately adjacent the distal tapered portion, coupled with a distal end of the lumen wall protection member shaft, wherein the second longitudinal length is longer than the first longitudinal length, and the first longitudinal length is longer than the third longitudinal length; at least one eversion feature configured to facilitate preferential eversion of the distal tapered portion of the inflatable balloon into an inside of the balloon, rather than the proximal tapered portion, wherein the at least one eversion feature comprises a greater thickness of material on the proximal tapered portion as compared to the distal tapered portion; and an expandable obstruction retention member extending coaxially within the lumen wall protection member shaft and attached proximally to the retention member slider. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification