Expandable ureteral stent
First Claim
Patent Images
1. A ureteral stent comprising:
- an elongated member defining a first lumen;
a proximal retention structure defining a second lumen and disposed at a proximal end of the elongated member; and
a resilient portion defining a third lumen in fluid communication with the first and second lumens, the resilient portion connected to the proximal retention structure and the proximal end of the elongated member so as to allow the proximal retention structure to slideably move in relation to the proximal end of the elongated member between a retracted position and an expanded position.
2 Assignments
0 Petitions
Accused Products
Abstract
An expandable ureteral stent placed in a patient'"'"'s ureter so as to extend into the bladder of the patient. Expansion and contraction of the stent accommodates motion of the patient'"'"'s kidney and bladder, gently holding the stent in position and reducing patient discomfort. The length of the stent is variable up to several centimeters.
-
Citations
35 Claims
-
1. A ureteral stent comprising:
-
an elongated member defining a first lumen;
a proximal retention structure defining a second lumen and disposed at a proximal end of the elongated member; and
a resilient portion defining a third lumen in fluid communication with the first and second lumens, the resilient portion connected to the proximal retention structure and the proximal end of the elongated member so as to allow the proximal retention structure to slideably move in relation to the proximal end of the elongated member between a retracted position and an expanded position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22)
-
-
18. A ureteral stent comprising:
-
an elongated member defining a first lumen;
a proximal retention structure defining a second lumen and disposed at a proximal end of the elongated member; and
a resilient portion defining a third lumen in fluid communication with the first and second lumens, the resilient portion connected to the proximal retention structure and the proximal end of the elongated member so as to allow the proximal retention structure to slideably move in relation to the proximal end of the elongated member between a retracted position and an expanded position, such that the proximal retention structure is slideably moveable within the first lumen of the elongated member.
-
-
23. A ureteral stent having a resilient portion and a retention structure with a nonlinear shape, and an apparatus for positioning the stent, comprising:
-
the ureteral stent comprising an elongated member, the resilient portion in communication with the retention structure and the elongated member, such that the resilient portion allows the retention structure to slideably move relative to the elongated member between an expanded position and a retracted position, a guide wire positionable within a ureter ,wherein the guide wire passes through the resilient portion; and
a pusher disposed about the guide wire to travel along the guide wire, wherein a shape of a distal end of the pusher conforms to the nonlinear shape of the retention structure to position the stent within the ureter. - View Dependent Claims (24)
-
-
25. A method of facilitating urinary drainage from a kidney to a bladder in a patient that reduces discomfort to the patient, comprising:
-
positioning a ureteral stent in a ureter of a patient, the ureteral stent having an elongated member, a retention structure, and a resilient portion in communication with the retention structure and the elongated member; and
allowing the retention structure to slideably move relative to the elongated member between an expanded position and a retracted position, based on at least one of;
relative positioning of organs within the patient, a breathing pattern of the patient, or positions of the kidney and the bladder.- View Dependent Claims (26, 27, 28, 29)
-
-
30. A method of manufacturing an adjustable ureteral stent, comprising the steps of:
-
providing an elongated member, a retention structure, and a resilient portion biased to slideably move between contracted and expanded states; and
connecting at least one of the elongated member or the retention structure to an end of the resilient portion. - View Dependent Claims (31, 32, 33, 34, 35)
-
Specification