Ureteral stent
First Claim
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1. A ureteral stent comprising:
- a first holding portion configured to prevent the stent from displacing from a kidney by hanging a junction of renal pelvis and ureter when placed in the renal pelvis;
a second holding portion configured to prevent the stent from displacing from a bladder by hanging a ureterovesical junction when placed in the bladder; and
a junction portion having a solid-core round wire which joins said first holding portion and said second holding portion, wherein a longitudinal direction of said round wire is substantially conforming with the ureter when placed in the ureter.
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Abstract
A ureter stent designed for assisting the draining of urine with calculus fragments. The ureter stent includes a first holding portion, a second holding portion and a junction portion. The first holding portion has a pigtail shape for holding itself in a kidney. The second holding portion has a pigtail shape for holding itself in a bladder. The junction portion joins the first holding portion and the second holding portion and placed in a ureter. The junction portion is made of a metal round wire having no internal flow path. Urine flows outside the ureter stent.
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Citations
18 Claims
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1. A ureteral stent comprising:
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a first holding portion configured to prevent the stent from displacing from a kidney by hanging a junction of renal pelvis and ureter when placed in the renal pelvis;
a second holding portion configured to prevent the stent from displacing from a bladder by hanging a ureterovesical junction when placed in the bladder; and
a junction portion having a solid-core round wire which joins said first holding portion and said second holding portion, wherein a longitudinal direction of said round wire is substantially conforming with the ureter when placed in the ureter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A ureteral stent set comprising:
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a ureteral stent;
a sleeve; and
a pusher, wherein said ureteral stent includes;
a first holding portion configured to prevent the stent from displacing from a kidney by hanging a junction of renal pelvis and ureter when placed in the renal pelvis;
a second holding portion configured to prevent the stent from displacing from a bladder by hanging a ureterovesical junction when placed in the bladder; and
a junction portion having a solid-core round wire which joins said first holding portion and said second holding portion, wherein a longitudinal direction of said round wire is substantially conforming with the ureter when placed in the ureter, and said sleeve is configured to have a tube shape having an internal path through which said ureteral stent is guided into a human body and said first holding portion is guided into a kidney, and said pusher is configured to push said ureteral stent along said internal path. - View Dependent Claims (18)
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Specification