US 2002/0177902 A1 · Draining bodily fluids with a stent

Abstract

A stent for assisting urinary release in a male patient includes a first segment, a second segment, and a connecting member disposed between the first and second segments. The first segment includes a multi-winged malecot. When the stent is properly positioned within the patient's urinary system, the first segment is located on one side of the external sphincter with the multi-winged malecot located within the bladder to inhibit migration of the stent, and the second segment is located on the other side of the external sphincter and also tends to inhibit migration of the stent. The connecting segment is sized to extend through the external sphincter to couple the first and second segments together while not interfering with the normal operation of the external sphincter.

Claims35

Dependent claims

A stent for use in the body of a patient, comprising:

(a) a first segment locatable on the proximal side of the external sphincter of the patient and including a proximal portion, a distal end, and a lumen extending within the first segment, the proximal portion including at least one opening in communication with the lumen and a multi-winged malecot, the multi-winged malecot comprising two or more wings that are expandable and collapsible, the distal end terminating on the proximal side of the external sphincter when the stent is placed in the body of the patient;
(b) a second segment locatable on the distal side of the external sphincter of the patient and including a proximal end, a distal end, and a lumen extending within the second segment, the proximal end terminating on the distal side of the external sphincter when the stent is placed in the body of the patient;
and
(c) a connecting member disposed between the first and second segments and coupling together the first and second segments, the connecting member extending from the distal end of the first segment to the proximal end of the second segment with a smooth transition at the distal and proximal ends, the connecting member being sized to extend through the external sphincter and to allow normal operation of the external sphincter by the patient when the stent is placed in the body of the patient.

1 more element

A stent for use in the body of a patient, comprising:

(a) a first segment locatable on the proximal side of the external sphincter of the patient and including a proximal portion, a distal end, and a lumen extending within the first segment, the proximal portion including at least one opening in communication with the lumen and an inflatable balloon, the inflatable balloon in communication with an inflation channel for conveying fluids to fill the balloon, the inflation channel extending between the inflatable balloon and a valve located on the distal end of the first segment, the valve controlling flow of fluid in and out of the inflation channel, the distal end terminating on the proximal side of the external sphincter when the stent is placed in the body of the patient;
(b) a second segment locatable on the distal side of the external sphincter of the patient and including a proximal end, a distal end, and a lumen extending within the second segment, the proximal end terminating on the distal side of the external sphincter when the stent is placed in the body of the patient;
and
(c) a connecting member disposed between the first and second segments and coupling together the first and second segments, the connecting member extending from the distal end of the first segment to the proximal end of the second segment with a smooth transition at the distal and proximal ends, the connecting member being sized to extend through the external sphincter and to allow normal operation of the external sphincter by the patient when the stent is placed in the body of the patient.

1 more element

A stent for use in the body of a patient, comprising:

(a) a first segment locatable on the proximal side of the external sphincter of the patient and including a proximal portion, a distal end, a reinforcing element, and a lumen extending within the first segment, the proximal portion including at least one opening in communication with the lumen and an inflatable balloon, the distal end of the first segment terminating on the proximal side of the external sphincter when the stent is placed in the body of the patient;
(b) a second segment locatable on the distal side of the external sphincter of the patient and including a proximal end, a distal end, and a lumen extending within the second segment, the proximal end terminating on the distal side of the external sphincter when the stent is placed in the body of the patient;
(c) a connecting member disposed between the first and second segments and coupling together the first and second segments, the connecting member extending from the distal end of the first segment to the proximal end of the second segment with a smooth transition at the distal and proximal ends, the connecting member being sized to extend through the external sphincter and to allow normal operation of the external sphincter by the patient when the stent is placed in the body of the patient;
and
(d) an inflation channel for conveying fluid to the inflatable balloon, the inflation channel extending between the inflatable balloon and a valve located on the distal end of the second segment, the valve for controlling the flow of a fluid in and out of the inflation channel.

2 more elements

A method of positioning a stent within the urinary system of a patient, the method comprising:

(a) providing a stent comprising:
a first segment locatable on the proximal side of the external sphincter of the patient and including a proximal portion, a distal end, and a lumen extending within the first segment, the proximal portion including at least one opening in communication with the lumen and a multi-winged malecot, the multi-winged malecot comprising two or more wings that are expandable and collapsible, the distal end terminating on the proximal side of the external sphincter when the stent is placed in the body of the patient;
a second segment to be positioned on the distal side of the external sphincter of the patient and including a proximal end, a distal end, and a lumen extending within the second segment, the proximal end terminating on the distal side of the external sphincter when the stent is placed in the body of the patient;
and
a connecting member disposed between the first and second segments and coupling together the first and second segments, the connecting member extending from the distal end of the first segment to the proximal end of the second segment with a smooth transition at the distal and proximal ends, the connecting member being sized to extend through the external sphincter and to allow normal operation of the external sphincter by the patient when the stent is placed in the body of the patient;
(b) providing a stylet for pushing the stent through the patient's urethra, the stylet comprising a proximal end and a distal end, and sized to be received within the lumens of the second and first segments;
(c) passing the stylet through the lumens of the second and the first segments of the stent;
(d) collapsing the multi-winged malecot into an insertion configuration;
(e) inserting the stent and stylet into the patient's urethra;
(f) positioning the stent within the urinary system such that the first segment is located substantially within the prostatic urethra with the proximal portion located within the bladder and the distal end terminating prior to the proximal side of the external sphincter, the second segment located on the distal side of the external sphincter, and the connecting member extending through the external sphincter;
(g) expanding the multi-winged malecot into an expanded configuration, thereby anchoring the proximal portion of the stent within the bladder of the patient and preventing the distal migration of the stent;
and
(h) removing the stylet completely from the lumens of the first and second segments and from the patient's urethra, thereby leaving the stent positioned within the patient's urinary system.

10 more elements

A method of positioning a stent within the urinary system of a patient, the method comprising:

(a) providing a stent comprising:
a first segment locatable on the proximal side of the external sphincter of the patient and including a proximal portion, a distal end, and a lumen extending within the first segment, the proximal portion including at least one opening in communication with the lumen and an inflatable balloon, the inflatable balloon in communication with an inflation channel for conveying fluids to fill the balloon, the inflation channel extending between the inflatable balloon and a valve located on the distal end of the first segment, the valve controlling flow of fluid in and out of the inflation channel, the distal end terminating on the proximal side of the external sphincter when the stent is placed in the body of the patient;
a second segment locatable on the distal side of the external sphincter of the patient and including a proximal end, a distal end, and a lumen extending within the second segment, the proximal end terminating on the distal side of the external sphincter when the stent is placed in the body of the patient;
and
a connecting member disposed between the first and second segments and coupling together the first and second segments, the connecting member extending from the distal end of the first segment to the proximal end of the second segment with a smooth transition at the distal and proximal ends, the connecting member being sized to extend through the external sphincter and to allow normal operation of the external sphincter by the patient when the stent is placed in the body of the patient;
(b) providing a stylet for pushing the stent through the patient's urethra, the stylet comprising a proximal end and a distal end, and sized to be received within the lumens of the second and first segments;
(c) providing a syringe and an inflation segment for filling the inflatable balloon with fluid, the inflation segment comprising a first end, a second end, and a lumen extending within the inflation segment;
(d) connecting the first end of the inflation segment to the syringe and the second end to the valve located on the distal end of the first segment;
(e) passing the stylet through the lumens of the second and first segments of the stent;
(f) inserting the stent, stylet, and inflation segment into the patient's urethra;
(g) positioning the stent within the urinary system such that the first segment is located substantially within the prostatic urethra with the proximal portion located within the bladder and the distal end terminating prior to the proximal side of the external sphincter, the second segment located on the distal side of the external sphincter, and the connecting member extending through the external sphincter;
(h) filling the inflatable balloon located within the bladder with the fluid by activating the syringe to force the fluid from the syringe, through the lumen of the inflation segment, through the inflation channel, and into the inflatable balloon;
(i) disconnecting the second end of the inflation segment from the valve located on the distal end of the first segment;
(j) removing the stylet from the first and second segments;
and
(k) removing the stylet and inflation segment completely from the patient's urethra, thereby leaving the stent positioned within the patient's urinary system.

13 more elements

A method of positioning a stent within the urinary system of a patient, the method comprising:

(a) providing a stent comprising:
a first segment locatable on the proximal side of the external sphincter of the patient and including a proximal portion, a distal end, a reinforcing element, and a lumen extending within the first segment, the proximal portion including at least one opening in communication with the lumen and an inflatable balloon, the distal end of the first segment terminating on the proximal side of the external sphincter when the stent is placed in the body of the patient;
the second segment locatable on the distal side of the external sphincter of the patient and including a proximal end, the distal end, and a lumen extending within the second segment, the proximal end terminating on the distal side of the external sphincter when the stent is placed in the body of the patient;
a connecting member disposed between the first and second segments and coupling together the first and second segments, the connecting member extending from the distal end of the first segment to the proximal end of the second segment with a smooth transition at the distal and proximal ends, the connecting member being sized to extend through the external sphincter and to allow normal operation of the external sphincter by the patient when the stent is placed in the body of the patient;
and
an inflation channel for conveying fluid to the inflatable balloon, the inflation channel extending between the inflatable balloon and a valve located on the distal end of the second segment, the valve for controlling the flow of a fluid in and out of the inflation channel.
(b) providing a stylet for pushing the stent through the patient's urethra, the stylet comprising a proximal end and a distal end, and sized to be received within the lumens of the second and first segments;
(c) providing a syringe and an inflation segment for filling the inflatable balloon with fluid, the inflation segment comprising a first end, a second end, and a lumen extending within the inflation segment;
(d) connecting the first end of the inflation segment to the syringe and the second end to the valve located on the distal end of the second segment;
(e) passing the stylet through the lumens of the second and first segments of the stent;
(f) inserting the stent, stylet, and inflation segment into the patient's urethra;
(g) positioning the stent within the urinary system such that the first segment is located substantially within the prostatic urethra with the proximal portion located within the bladder and the distal end terminating prior to the proximal side of the external sphincter, the second segment located on the distal side of the external sphincter, and the connecting member extending through the external sphincter;
(h) filling the inflatable balloon located within the bladder with the fluid by activating the syringe to force the fluid from the syringe, through the lumen of the inflation segment, through the inflation channel, and into the inflatable balloon;
(i) disconnecting the second end of the inflation segment from the valve located on the distal end of the second segment;
(j) removing the stylet from the first and second segments;
and
(k) removing the stylet and inflation segment completely from the patient's urethra, thereby leaving the stent positioned within the patient's urinary system.

14 more elements

Dependencies are inferred from the claim text.

Draining bodily fluids with a stent

Life of this patent

Draining bodily fluids with a stent

Life of this patent

Abstract

Claims35