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US 12,678,601 B2Granted
Ureteral stents and methods for using the same
AssigneesMor Research Applications Ltd., Yeda Research and Development Co. Ltd.
InventorsYaniv Shilo, Brian Berkowitz
Life of this patent
Estimating the term…
Abstract
Embodiments pertain to ureteral stents for treatment of partial or full ureteral occlusion by bridging one or more ureteral occlusions, where each stent includes a tubular portion, a first spout portion and a second spout portion. The stent may have one or more tapered edges by having the smallest diameter of the first and/or the second spout portion smaller than the largest diameter of the tubular portion, and/or be of an overall length allowing the ureteral stent to be completely located within a patient's ureter once deployed therein.
Claims20
A ureteral stent comprising:
- a tubular portion having an elongated hollow tubular shape having a first edge and a second edge, the tubular portion being configured for enabling fluid flow therethrough;
- a first spout portion, which extends from the first edge of the tubular portion, the first spout portion being configurable to a curved shape, in a relaxed state of the ureteral stent;
- and a second spout portion, which extends from the second edge of the tubular portion, the second spout portion being configurable to a curved shape, in a relaxed state of the ureteral stent,
- wherein the ureteral stent is configured to enable, when deployed in the patient's body, fluid passage between a kidney and the bladder of the patient, by bypassing one or more partially and/or fully occluded sections of a patient's ureter,
- wherein the overall length of the ureteral stent is such as to be completely located within a patient's ureter once deployed therein, such that both first and second spout portions of the ureteral stent are located within the patient's ureter;
- and
- wherein, when the stent is deployed in the patient's ureter, the first and the second spout portions engage with the proximal and distal sides of the one or more partially or fully occluding elements, respectively, such that the one or more partially or fully occluding elements is positioned between the first spout portion and the second spout portion.
4 more elements
A ureteral stent comprising:
- a tubular portion having an elongated hollow tubular shape having a first edge and a second edge, the tubular portion being configured for enabling fluid flow therethrough;
- a first spout portion, which extends from the first edge of the tubular portion, the first spout portion being configurable to a curved shape, in a relaxed state of the ureteral stent;
- and
- a second spout portion, which extends from the second edge of the tubular portion, the second spout portion being configurable to a curved shape, in a relaxed state of the ureteral stent,
- wherein the ureteral stent is configured to be at least partially deployed in a patient's ureter such that the first spout portion is located at a smaller distance from the patient's kidney than the second spout portion,
- wherein the ureteral stent is configured to enable, when deployed in the patient's body, fluid passage between the kidney and the bladder of the patient, by bypassing one or more partially and/or fully occluding elements located in the patient's ureter;
- wherein, when the stent is deployed in the patient's ureter, the first and the second spout portions engage with the proximal and distal sides of the one or more partially or fully occluding elements, respectively;
- wherein a first diameter of at least part of at least one of:
- the first spout portion and/or the second spout portion is smaller than a second diameter of at least part of the tubular portion;
- and
- wherein, when the stent is deployed in the patient's ureter, the first and the second spout portions engage with the proximal and distal sides of the one or more partially or fully occluding elements, respectively, such that the one or more partially or fully occluding elements is positioned between the first spout portion and the second spout portion.
8 more elements
A method for prevention of ureter occlusion, the method comprising:
- providing a ureteral stent comprising:
- a tubular portion having an elongated hollow tubular shape having a first edge and a second edge, the tubular portion being configured for enabling fluid flow therethrough;
- a first spout portion, which extends from the first edge of the tubular portion, the first spout portion being configurable to a curved shape in a relaxed state;
- and
- a second spout portion, which extends from the second edge of the tubular portion, the second spout portion being configurable to a curved shape in a relaxed state;
- and
- deploying the ureteral stent in a patient's body such that at least part thereof is positioned in the patient's ureter,
- wherein the ureteral stent is configured to enable, when deployed in a patient's body, fluid passage between the kidney and the bladder of the patient, by bypassing one or more partially and/or fully occluding elements located in the patient's ureter;
- wherein, when the stent is deployed in the patient's ureter, the first and the second spout portions engage with the proximal and distal sides of the one or more partially or fully occluding elements, respectively;
- wherein a first diameter of at least part of at least one of:
- the first spout portion and/or the second spout portion is smaller than a second diameter of at least part of the tubular portion;
- and
- wherein, when the stent is deployed in the patient's ureter, the first and the second spout portions engage with the proximal and distal sides of the one or more partially or fully occluding elements, respectively, such that the one or more partially or fully occluding elements is positioned between the first spout portion and the second spout portion.
10 more elements
Dependencies are inferred from the claim text.