Methods for preventing tissue migration
First Claim
1. A method of inhibiting tissue migration during a procedure, comprising:
- positioning an open area of a non-inflatable hood against or adjacent to a tissue region, where the hood expands when unconstrained to a deployed configuration which defines the open area;
displacing an opaque fluid with a transparent fluid from the open area through a distal opening in the hood defined by the hood and the tissue region;
engaging a portion of the tissue region within the open area via an end effector advanced through the open area and which grasps onto the portion, the end effector including a tapered section through which a lumen extends, the tapered section being tapered along its entire length, the tapered section being tapered along a longitudinal axis of the end effector and including threads extending from a surface of the tapered section in a direction orthogonal to the longitudinal axis, wherein engaging comprises screwing the tapered and threaded section of the end effector into the portion of tissue region; and
piercing the tissue region while displacing the opaque fluid with the transparent fluid through the distal opening of the hood and while maintaining engagement of the portion of the tissue region such that distal movement of the tissue is inhibited.
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Accused Products
Abstract
A method of inhibiting tissue migration comprises positioning an open area of a hood against or adjacent to a tissue region. The method also comprises displacing an opaque fluid with a transparent fluid from the open area. The method includes engaging a portion of the tissue region within the open area via an end effector advanced through the open area and which grasps onto the portion. The end effector includes a tapered section, tapered along its entire length, through which a lumen extends. The tapered section includes threads extending from a surface of the tapered section in a direction orthogonal to the longitudinal axis. The tissue region is pierced while displacing the opaque fluid with the transparent fluid through the distal opening of the hood and while maintaining engagement of the portion of the tissue region such that distal movement of the tissue is inhibited.
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Citations
8 Claims
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1. A method of inhibiting tissue migration during a procedure, comprising:
- positioning an open area of a non-inflatable hood against or adjacent to a tissue region, where the hood expands when unconstrained to a deployed configuration which defines the open area;
displacing an opaque fluid with a transparent fluid from the open area through a distal opening in the hood defined by the hood and the tissue region;
engaging a portion of the tissue region within the open area via an end effector advanced through the open area and which grasps onto the portion, the end effector including a tapered section through which a lumen extends, the tapered section being tapered along its entire length, the tapered section being tapered along a longitudinal axis of the end effector and including threads extending from a surface of the tapered section in a direction orthogonal to the longitudinal axis, wherein engaging comprises screwing the tapered and threaded section of the end effector into the portion of tissue region; and
piercing the tissue region while displacing the opaque fluid with the transparent fluid through the distal opening of the hood and while maintaining engagement of the portion of the tissue region such that distal movement of the tissue is inhibited. - View Dependent Claims (2, 3, 4, 5, 6)
- positioning an open area of a non-inflatable hood against or adjacent to a tissue region, where the hood expands when unconstrained to a deployed configuration which defines the open area;
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7. A method of inhibiting tissue migration during a procedure, comprising:
- expanding a non-inflatable hood to a deployed configuration which defines an open area, the hood including a distal edge;
positioning the distal edge of the hood adjacent to a tissue region;
extending a counter-traction device through the open area and into engagement with the tissue region;
deploying a piercing instrument through the open area and into the tissue region while the counter-traction device maintains engagement with the tissue region such that distal movement of the tissue region is inhibited, wherein the counter-traction device includes an end effector with threads extending from a tapered surface in a direction orthogonal to a longitudinal axis of the end effector, the tapered surface being tapered along its entire length, wherein the tapered surface is tapered along the longitudinal axis, and wherein extending the counter-traction device into engagement with the tissue region includes threading the tapered surface of the end effector into the tissue region; and
flushing a transparent fluid through the open area and distally beyond the distal edge of the hood while the piercing instrument is deployed into the tissue region. - View Dependent Claims (8)
- expanding a non-inflatable hood to a deployed configuration which defines an open area, the hood including a distal edge;
Specification