Tissue accessing and anchoring device and method
First Claim
1. A tissue accessing and anchoring device, comprising:
- a. an elongated shaft having a distal end and a proximal end;
b. a tissue cutting member at the distal end of the shaft to provide access to a target site;
c. at least one movable sheath having a distal end at or near the distal end of the shaft, a port in the distal end of the sheath and an inner bore leading to and in fluid communication with the port in the distal end; and
d. at least one anchoring element which is slidably disposed within the inner bore of the sheath and positioned at or near the distal end of the shaft, which is configured to move within said inner bore, to extend out of the port in the distal end of the movable sheath, beyond the distal end of the shaft and which is configured to extend into tissue at the target site to thereby anchor the device.
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Accused Products
Abstract
The invention provides systems, methods and a node accessing and anchoring device, comprising an elongated shaft, a tissue cutting member, at least one anchoring element extending from a position at or near the distal end of the shaft; and a radiation detector. The radiation detector is effective to locate and identify sentinel lymph nodes following injection of radioactive material into a primary lesion site within a patient. The tissue cutting member, which may be activated with radio frequency energy, is effective to allow access of the elongated shaft to a sentinel lymph node. The anchoring elements are effective to anchor the device to or adjacent a sentinel lymph node accessed by the device. Anchoring elements may assume radially, longitudinally, or mixed radially and longitudinally curved or coiled configurations when deployed.
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Citations
26 Claims
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1. A tissue accessing and anchoring device, comprising:
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a. an elongated shaft having a distal end and a proximal end;
b. a tissue cutting member at the distal end of the shaft to provide access to a target site;
c. at least one movable sheath having a distal end at or near the distal end of the shaft, a port in the distal end of the sheath and an inner bore leading to and in fluid communication with the port in the distal end; and
d. at least one anchoring element which is slidably disposed within the inner bore of the sheath and positioned at or near the distal end of the shaft, which is configured to move within said inner bore, to extend out of the port in the distal end of the movable sheath, beyond the distal end of the shaft and which is configured to extend into tissue at the target site to thereby anchor the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A tissue accessing and anchoring device, comprising:
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a. an elongated shaft having a distal end, a proximal end and at least a distal portion having an oblong transverse cross section along the length thereof;
b. a tissue cuffing member at or beyond the distal end of the shaft to provide access to a target site;
c. a plurality of movable sheaths each having a distal end at or near the distal end of the shaft, a port in the distal end of the sheath and an inner bore leading to and in fluid communication with the port in the distal end; and
d. a plurality of elongated anchoring elements, each of which is configured to move within the inner bore of a sheath, to extend from the port in the distal end of the movable sheath along the portion of the elongated shaft having an oblong transverse cross section, to extend beyond the distal end of the shaft and which is configured to extend into tissue at the target site to thereby anchor the device. - View Dependent Claims (24)
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25. A node accessing and anchoring device comprising:
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an elongated shaft having a longitudinal axis, a distal end and a proximal end;
a tissue cutting member at the distal end of the shaft;
a movable sheath having an inner bore;
at least one radially extending anchoring element which is configured to extend into tissue at a target site and which is disposed within said inner bore of said movable sheath at or near the distal end of the shaft, the at least one radially extending anchoring element having a retracted configuration and a deployed configuration extending from the distal end of the shaft; and
a deployment actuator disposed proximal of the distal end of the elongate shaft and configured to deploy the radially extending anchoring element from a retracted configuration to an extended configuration. - View Dependent Claims (26)
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Specification