Device for removing kidney stones
First Claim
1. A device for removing a kidney stone from a ureter, the device comprising:
- a handle, comprising;
a retention member slider configured to slide along the handle; and
a wall protection slider configured to slide along the handle;
an elongate, flexible, outer shaft, having a distal end configured to be advanced into the ureter;
a wall protection member shaft coaxially disposed within the outer shaft and having a proximal end attached to the wall protection slider;
a compliant ureter wall protection member, having a first end coupled with the distal end of the outer shaft and a second end coupled with a distal end of the wall protection member shaft;
an inflation port to pass fluid into the ureter wall protection member via a space between the wall protection member shaft and the outer shaft;
an expandable stone retention member disposed coaxially within the wall protection member shaft and comprising;
a retention member shaft having a proximal end attached to the retention member slider; and
an expandable basket disposed at a distal end of the retention member shaft; and
an inner shaft attached to the handle and located between the retention member shaft and the wall protection member shaft,wherein the wall protection member shaft is mobile relative to the outer shaft and is configured to move passively back as the expandable basket holding the kidney stone is pulled into the ureter wall protection member,wherein the retention member shaft and the inner shaft are coupled by friction fit, such that motion of the expandable stone retention member is coupled to the inner shaft when not actively controlled by a user of the device, and wherein the retention member shaft and the inner shaft are de-coupled when the user slides the retention member slider to independently move the retention member shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for removing a kidney stone from a ureter may include: an elongate, flexible, outer shaft having a distal end configured to be advanced into the ureter and a proximal end; an elongate, flexible, inner shaft extending through at least part of the outer shaft; an expandable stone retention member extending through at least part of the inner shaft and moveable along the longitudinal axis relative to the inner shaft; an elongate, flexible camera positioned coaxially within the retention member shaft, such that a distal end of the camera is located at or near a distal end of the inner shaft; and a handle coupled with the proximal end of the outer shaft, a proximal end of the inner shaft, and a proximal end of the retention member shaft.
119 Citations
16 Claims
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1. A device for removing a kidney stone from a ureter, the device comprising:
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a handle, comprising; a retention member slider configured to slide along the handle; and a wall protection slider configured to slide along the handle; an elongate, flexible, outer shaft, having a distal end configured to be advanced into the ureter; a wall protection member shaft coaxially disposed within the outer shaft and having a proximal end attached to the wall protection slider; a compliant ureter wall protection member, having a first end coupled with the distal end of the outer shaft and a second end coupled with a distal end of the wall protection member shaft; an inflation port to pass fluid into the ureter wall protection member via a space between the wall protection member shaft and the outer shaft; an expandable stone retention member disposed coaxially within the wall protection member shaft and comprising; a retention member shaft having a proximal end attached to the retention member slider; and an expandable basket disposed at a distal end of the retention member shaft; and
an inner shaft attached to the handle and located between the retention member shaft and the wall protection member shaft,wherein the wall protection member shaft is mobile relative to the outer shaft and is configured to move passively back as the expandable basket holding the kidney stone is pulled into the ureter wall protection member, wherein the retention member shaft and the inner shaft are coupled by friction fit, such that motion of the expandable stone retention member is coupled to the inner shaft when not actively controlled by a user of the device, and wherein the retention member shaft and the inner shaft are de-coupled when the user slides the retention member slider to independently move the retention member shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification