Prostatic stent with localized tissue engaging anchoring means and methods for inhibiting obstruction of the prostatic urethra
First Claim
1. A prostatic stent configured for insertion into the urethra of a male subject, the urethra generally including, in serial order from the externalmost portion to the internal portion, the penile meatus, the penile urethra, the bulbousurethra, the sphincter, the membranous urethra, the prostatic urethra, the bladder neck and the bladder, said prostatic stent comprising:
- a unitary tubular body having a central lumen extending therethrough and a first cross-sectional width thereacross;
a tissue-engaging inflatable balloon positioned on a lower perimeter portion of said unitary body; and
at least one conduit having opposing upper and lower end portions with a fluid lumen formed therein, a portion of said upper end attached to said unitary tubular body such that it is in fluid communication with said inflatable balloon, said conduit having a second cross-sectional width, the second cross-sectional width being less than said first cross-sectional width;
wherein, in position in the subject, said stent is configured such that said unitary body resides above the sphincter and said conduit extends through the sphincter and out of the penile meatus of the subject, and wherein said conduit is sized and constructed such that it allows substantially natural closing of the sphincter when in position in the subject.
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Accused Products
Abstract
A prostatic stent is configured as a unitary body, which is adapted to reside above the sphincter when in position in a subject and allow normal functioning of the sphincter. The stent includes and elongated and substantially narrow conduit, which extends through the sphincter and outside the body of the subject. The conduit is sized and constructed to allow normal operation of the sphincter. The stent also includes and upper and/or an intermediate inflatable portions and may include a second conduit for the introduction of medication to the stent.
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Citations
22 Claims
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1. A prostatic stent configured for insertion into the urethra of a male subject, the urethra generally including, in serial order from the externalmost portion to the internal portion, the penile meatus, the penile urethra, the bulbous
urethra, the sphincter, the membranous urethra, the prostatic urethra, the bladder neck and the bladder, said prostatic stent comprising: -
a unitary tubular body having a central lumen extending therethrough and a first cross-sectional width thereacross;
a tissue-engaging inflatable balloon positioned on a lower perimeter portion of said unitary body; and
at least one conduit having opposing upper and lower end portions with a fluid lumen formed therein, a portion of said upper end attached to said unitary tubular body such that it is in fluid communication with said inflatable balloon, said conduit having a second cross-sectional width, the second cross-sectional width being less than said first cross-sectional width;
wherein, in position in the subject, said stent is configured such that said unitary body resides above the sphincter and said conduit extends through the sphincter and out of the penile meatus of the subject, and wherein said conduit is sized and constructed such that it allows substantially natural closing of the sphincter when in position in the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A set of prostatic stents each configured for insertion into the urethra of a male subject, the urethra generally including, in serial order front the external most portion to the internal portion, the penile meatus, the penile urethra, the bulbous urethra, the sphincter, the membranous urethra, the prostatic urethra, the bladder neck and the bladder, said set of prostatic stents-comprising:
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(a) a first prostatic stent comprising;
a unitary tubular body having a central lumen extending therethrough, a first length, and an associated cross-sectional width thereacross;
a tissue engaging inflatable balloon positioned on a lower perimeter portion of said unitary body; and
at least one conduit having opposing upper and lower end portions with a fluid lumen formed a portion of said upper end attached to said unitary tubular body such that it is in fluid communication with said inflatable balloon, said conduit having a second cross-sectional width, the second cross-sectional width being substantially less than said first cross-sectional width;
(b) a second prostatic stent comprising;
a unitary tubular body having a central lumen extending therethrough, a second length and an associated cross-sectional width thereacross;
a tissue engaging inflatable balloon positioned on a lower perimeter portion of said unitary body; and
at least one conduit having opposing upper end lower end portions with a fluid lumen formed therein, a portion of said upper end attached to said unitary tubular body such that it is in fluid communication with said inflatable balloon, said conduit having a second cross-sectional width, the second cross-sectional width being substantially less than said first cross-sectional width, wherein, in position in the subject, each of said stents is configured that said unitary body resides above the sphincter and said conduit extends through the sphincter and out of the penile meatus of the subjection, and wherein said conduit is configured such that it allows substantially,natural closing of the sphincter when in position in the subject, and further wherein said first stent unitary body has a different length than said second stent unitary body. - View Dependent Claims (21)
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22. A prostatic stent configured for insertion into the urethra of a male subject, the urethra generally including, in serial order from the externalmost portion to the internal portion, the penile meatus, the penile urethra, the bulbous urethra, the sphincter, the membranous urethra, the prostatic urethra, the bladder neck and the bladder, said prostatic stent comprising:
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a unitary tubular body having a central lumen extending therethrough and a first cross-sectional width thereacross;
a tissue-engaging inflatable balloon positioned on a lower perimeter portion of said unitary body; and
at least one conduit having opposing upper and lower end portions with a fluid lumen formed therein, a portion of said upper end attached to said unitary tubular body such that it is in fluid communication with said inflatable balloon, said conduit having a second cross-sectional width the second cross-sectional width being less than said first cross-sectional width; and
wherein at least one conduit is releasably attached to said unitary tubular body such that it can be detached in situ from the stent by pulling on an end portion of said conduit without dislodging the unitary body from a desired location in the subject; and
wherein, in position in the subject, said stent is configured such that said unitary body resides above the sphincter and said conduit extends therethrough the sphincter and out of the penile meatus of the subject, and wherein said conduit is sized and constructed such that it allows substantially natural closing of the sphincter when in position in the subject;
wherein a selected one of said at least one conduits is releasably attached to said unitary tubular body such that it can detached in situ from the stent by pulling on an end portion of said conduit without dislodging the unitary body from a desired location in the subject, and wherein said selected releasably attached conduit is configured to be readily visually identified externally when said stent is in position in the subject.
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Specification