Devices, systems, and methods for treating heart failure
First Claim
1. A transseptal tissue coring device comprising a cutting edge and a supporting surface, each of which comprises a delivery profile and a deployed profile;
- wherein at least one dimension of the cutting edge in the deployed profile is up to 400% of that in the delivery profile; and
the cutting edge in the deployed profile is capable of applying a force against the supporting surface in the deployed profile to cut tissues; and
the supporting surface is derived from a tubular body having a proximal end, a distal end, and a plurality of slits extending substantially from the proximal end to the distal end;
wherein the deployed supporting surface is substantially parallel to a surface formed by the deployed cutting edge and is greater than the dimension of the deployed cutting edge.
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Accused Products
Abstract
The present teachings provide devices and methods for percutaneously removing internal tissue. Specifically, one aspect of the present teachings provides a tissue incising element with a sharp cutting edge and a longitudinal lumen and a tissue stabilizer slidably disposed within the longitudinal lumen of the tissue incising element. The tissue incising element has a deployed configuration during tissue cutting and a small collapsed configuration during the percutaneous delivery and removal. The tissue stabilizer includes a tissue supporting/gripping element configured to support tissue during incising and capture the removed tissue.
276 Citations
15 Claims
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1. A transseptal tissue coring device comprising a cutting edge and a supporting surface, each of which comprises a delivery profile and a deployed profile;
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wherein at least one dimension of the cutting edge in the deployed profile is up to 400% of that in the delivery profile; and the cutting edge in the deployed profile is capable of applying a force against the supporting surface in the deployed profile to cut tissues; and the supporting surface is derived from a tubular body having a proximal end, a distal end, and a plurality of slits extending substantially from the proximal end to the distal end; wherein the deployed supporting surface is substantially parallel to a surface formed by the deployed cutting edge and is greater than the dimension of the deployed cutting edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A transseptal tissue coring device comprising:
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a tissue incising element comprising a proximal end, a distal end, a longitudinal lumen extending from the proximal end to the distal end, and a sharp edge at the distal end, and a tissue stabilizer comprising an elongated body, a distal portion, and a plurality of tissue supporting struts formed by a plurality of slits along the elongated body of the distal portion of the tissue stabilizer, wherein the tissue supporting struts form a supporting surface, wherein the supporting surface is substantially parallel to a surface formed by the sharp edge of the tissue incising element; and is greater than the dimension of the sharp edge of the tissue incising element. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification