Pressure-propelled system for body lumen
First Claim
1. Apparatus for use with a biologically-compatible-fluid pressure source, comprising:
- a guide member at least partially insertable into a proximal opening of a body lumen;
said guide member including a passageway connectable to the source of fluid pressure;
an elongate carrier arranged for sliding movement through said guide member, adapted to be inserted through a proximal opening of a body lumen; and
a piston head coupled to a distal portion of the carrier and adapted to;
be inflated until it is in contact with the body lumen forming a pressure seal between said piston head and a wall of the lumen after the carrier has been inserted into the lumen, such that once the piston head is inflated it is configured to be withdrawn proximally through the body lumen in response to pressure from the fluid pressure source to an external surface of the distal piston head, creating greater fluid pressure acting on the distal side of piston head than on the proximal side of piston head, thereby proximally propelling the piston head and the carrier.
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Abstract
An apparatus for use with a biologically-compatible-fluid pressure source, the apparatus includes an elongate carrier, adapted to be inserted through a proximal opening of a body lumen, and a piston head coupled to a distal portion of the carrier. The piston head is adapted to form a pressure seal with a wall of the lumen after the carrier has been inserted into the lumen, and to be advanced distally through the body lumen in response to pressure from the fluid pressure source. The apparatus is configured to facilitate distal advancement of the piston head by facilitating passage of fluid out of the lumen from a site within the lumen distal to the piston head.
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Citations
28 Claims
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1. Apparatus for use with a biologically-compatible-fluid pressure source, comprising:
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a guide member at least partially insertable into a proximal opening of a body lumen; said guide member including a passageway connectable to the source of fluid pressure; an elongate carrier arranged for sliding movement through said guide member, adapted to be inserted through a proximal opening of a body lumen; and a piston head coupled to a distal portion of the carrier and adapted to; be inflated until it is in contact with the body lumen forming a pressure seal between said piston head and a wall of the lumen after the carrier has been inserted into the lumen, such that once the piston head is inflated it is configured to be withdrawn proximally through the body lumen in response to pressure from the fluid pressure source to an external surface of the distal piston head, creating greater fluid pressure acting on the distal side of piston head than on the proximal side of piston head, thereby proximally propelling the piston head and the carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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an elongate carrier, adapted to be inserted through a proximal opening of a body lumen; a piston head coupled to a distal portion of the carrier, and adapted to be inflated until the piston head is in contact with the body lumen forming a pressure seal between said piston head and a wall of the lumen after the carrier has been inserted into the lumen; and a biologically-compatible fluid proximal pressure source, adapted to be in fluid communication with a proximal portion of the lumen proximal to the piston head, and to apply pressure to an external surface of the piston head sufficient to advance the carrier distally through the body lumen. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification