SYSTEMS, DEVICES AND METHODS FOR ACCESSING A BODILY OPENING
First Claim
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1. A medical device for forming a pathway from an external orifice to a bodily opening defined by tissue of an internal bodily lumen, the medical device comprising:
- a flexible sheath having a length suitable for forming the pathway, the flexible sheath having a distal portion that is collapsible; and
an expandable frame connected to the distal portion of the sheath, the expandable frame operable between a collapsed configuration and an expanded configuration, the expandable frame expanding radially from the collapsed configuration to the expanded configuration;
the expandable frame including a first cage having a proximal segment and a distal segment connected together by intermediate hinges, the proximal segment connected to the flexible sheath, the distal segment projecting distally beyond the distal portion of the flexible sheath;
the distal segment rotating radially outwardly relative to the proximal segment about the intermediate hinges when the expandable frame expands radially from the collapsed configuration to the expanded configuration.
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Abstract
Medical systems, devices and methods are provided for accessing a bodily opening that, among other things, are safe and reliable, and facilitate manipulation of a medical instrument. The medical access device generally includes an elongated flexible sheath and an expandable frame connected to the distal end of the flexible sheath. The sheath and expandable frame are operable between expanded and collapsed configurations to provide a pathway from a natural orifice to the bodily opening.
129 Citations
20 Claims
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1. A medical device for forming a pathway from an external orifice to a bodily opening defined by tissue of an internal bodily lumen, the medical device comprising:
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a flexible sheath having a length suitable for forming the pathway, the flexible sheath having a distal portion that is collapsible; and an expandable frame connected to the distal portion of the sheath, the expandable frame operable between a collapsed configuration and an expanded configuration, the expandable frame expanding radially from the collapsed configuration to the expanded configuration; the expandable frame including a first cage having a proximal segment and a distal segment connected together by intermediate hinges, the proximal segment connected to the flexible sheath, the distal segment projecting distally beyond the distal portion of the flexible sheath; the distal segment rotating radially outwardly relative to the proximal segment about the intermediate hinges when the expandable frame expands radially from the collapsed configuration to the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for accessing a bodily opening defined by tissue of an internal bodily lumen via an external orifice, the method comprising:
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providing a medical device comprising an expandable member and a flexible sheath, the flexible sheath having a distal portion that is collapsible, the expandable frame connected to the distal portion of the sheath, the expandable frame operable between a collapsed configuration and an expanded configuration, the expandable frame expanding radially from the collapsed configuration to the expanded configuration, the expandable frame including a first cage having a proximal segment and a distal segment connected together by intermediate hinges, the proximal segment connected to the flexible sheath, the distal segment projecting distally beyond the distal portion of the flexible sheath, the distal segment rotating radially outwardly relative to the proximal segment about the intermediate hinges when the expandable frame expands radially from the collapsed configuration to the expanded configuration; delivering the distal end of the sheath and a portion of the expandable member within the bodily opening while the expandable member is in its collapsed configuration; operating the expandable member to its expanded configuration such that the distal end of the sheath is placed in contact with the interior of the perforation formed in the bodily wall and the distal segment of the first cage rotates radially outwardly relative to the proximal segment, the distal segment located distally beyond the perforation and the bodily wall. - View Dependent Claims (19, 20)
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Specification