摘要:
An expandable spherical structure for deployment in a blood vessel or other body lumen, comprising: an open frame configured to assume a collapsed configuration and an expanded configuration; and a closed face carried by the open frame; wherein the open frame is configured so as to permit substantially normal flow therethrough when the open frame is in its expanded configuration, and further wherein the closed face is configured so as to obstruct flow therethrough.
摘要:
An expandable spherical structure for deployment in a blood vessel or other body lumen, comprising: an open frame configured to assume a collapsed configuration and an expanded configuration; and a closed face carried by the open frame; wherein the open frame is configured so as to permit substantially normal flow therethrough when the open frame is in its expanded configuration, and further wherein the closed face is configured so as to obstruct flow therethrough.
摘要:
An expandable substantially spherical structure for deployment in a blood vessel or other body lumen, comprising: an open frame formed out of a closed loop of filament and configured to assume (i) a collapsed configuration in the form of a substantially two-dimensional elongated loop structure so as to facilitate insertion into the blood vessel or other body lumen, and (ii) an expanded configuration in the form of a three-dimensional substantially spherical structure so as to facilitate retention at a site in the blood vessel or other body lumen; and a flow-restricting face carried by the open frame; wherein the open frame is configured so as to permit substantially normal flow therethrough when the open frame is in its expanded configuration, and further wherein the flow-restricting face is configured so as to restrict flow therethrough.
摘要:
An expandable substantially spherical structure for deployment in a blood vessel or other body lumen, comprising: an open frame formed out of a closed loop of filament and configured to assume (i) a collapsed configuration in the form of a substantially two-dimensional elongated loop structure so as to facilitate insertion into the blood vessel or other body lumen, and (ii) an expanded configuration in the form of a three-dimensional substantially spherical structure so as to facilitate retention at a site in the blood vessel or other body lumen; and a flow-restricting face carried by the open frame; wherein the open frame is configured so as to permit substantially normal flow therethrough when the open frame is in its expanded configuration, and further wherein the flow-restricting face is configured so as to restrict flow therethrough.
摘要:
Apparatus and method for accessing the wall of a body lumen while simultaneously providing zone isolation and fluid bypass capability, the apparatus comprising: an erectable proximal isolation barrier capable of making a sealing engagement with the wall of the body lumen; an erectable distal isolation barrier capable of making a sealing engagement with the wall of the body lumen; a bypass channel secured to, and extending between, the proximal isolation barrier and the distal isolation barrier, the bypass channel comprising a lumen communicating with the region proximal to the proximal isolation barrier and with the region distal to the distal isolation barrier; and a working catheter passing through the proximal isolation barrier and terminating short of the distal isolation barrier, the working catheter providing a central lumen for providing access to the wall of the body lumen between the proximal isolation barrier and the distal isolation barrier.
摘要:
A method for making a device for causing thrombosis of an aneurysm, wherein said device comprises a single elastic filament configurable between (i) an elongated, substantially linear configuration, and (ii) a longitudinally-contracted, substantially three-dimensional configuration, said method comprising: providing a sheet of shape memory material; producing a single filament, two-dimensional interim structure from said sheet of shape memory material; mounting said single filament, two-dimensional interim structure to a fixture so that said single filament, two-dimensional interim structure is transformed into said longitudinally-contracted, substantially three-dimensional configuration; and heat treating said single filament, two-dimensional interim structure while it is mounted to said fixture so as to produce said device in its longitudinally-contracted, substantially three-dimensional configuration.
摘要:
Apparatus and method for accessing the wall of a body lumen while simultaneously providing zone isolation and fluid bypass capability, the apparatus comprising: an erectable proximal isolation barrier capable of making a sealing engagement with the wall of the body lumen; an erectable distal isolation barrier capable of making a sealing engagement with the wall of the body lumen; a bypass channel secured to, and extending between, the proximal isolation barrier and the distal isolation barrier, the bypass channel comprising a lumen communicating with the region proximal to the proximal isolation barrier and with the region distal to the distal isolation barrier; and a working catheter passing through the proximal isolation barrier and terminating short of the distal isolation barrier, the working catheter providing a central lumen for providing access to the wall of the body lumen between the proximal isolation barrier and the distal isolation barrier.
摘要:
A method for making a device for causing thrombosis of an aneurysm, wherein said device comprises a single elastic filament configurable between (i) an elongated, substantially linear configuration, and (ii) a longitudinally-contracted, substantially three-dimensional configuration, said method comprising: providing a sheet of shape memory material; producing a single filament, two-dimensional interim structure from said sheet of shape memory material; mounting said single filament, two-dimensional interim structure to a fixture so that said single filament, two-dimensional interim structure is transformed into said longitudinally-contracted, substantially three-dimensional configuration; and heat treating said single filament, two-dimensional interim structure while it is mounted to said fixture so as to produce said device in its longitudinally-contracted, substantially three-dimensional configuration.
摘要:
In one form of the invention, there is provided a method for treating rectal prolapse, the method comprising:inserting an expandable element into a prolapsed rectum via the anus;expanding the expandable element so that the expandable element securely engages the rectum;advancing the expanded element distally so as to return the prolapsed rectum to its normal, non-prolapsed state; andsecuring the rectum to supporting tissue whereby to retain the rectum in its normal, non-prolapsed state.In another form of the invention, there is provided an endoscope assembly for treating rectal prolapse, the endoscope assembly comprising:an endoscope;a balloon catheter; anda tacker;wherein the endoscope, balloon catheter and tacker are mounted together for insertion as a unit.
摘要:
Apparatus and method for repairing an abnormality in the wall of a body lumen, the method comprising isolating the abnormality in the wall of the body lumen from flow in the body lumen; positioning flowable forming material adjacent to the abnormality in the wall of the body lumen; and transforming the flowable forming material into a substantially stationary state so as to repair the abnormality in the wall of the body lumen, and the apparatus comprising a supply of flowable forming material; zone isolation apparatus for isolating the abnormality in the wall of the body lumen from flow in the body lumen; and positioning apparatus for positioning the flowable forming material adjacent to the abnormality in the wall of the body lumen so as to repair the abnormality in the wall of the body lumen.