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US8062300: Tissue removal with at least partially flexible devices

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Filing Information

Inventor(s) Gregory P. Schmitz · Jeffrey L. Bleich · Steven A. Spisak · Roy Leguidleguid · Jefferey Bleam ·
Assignee(s) Baxano, Inc. ·
Attorney/Agent(s) Shay Glenn LLP ·
Primary Examiner Thomas C. Barrett ·
Assistant Examiner David Bates ·
Application Number US11687548
Filing date 03/16/2007
Issue date 11/22/2011
Prior Publication Data
Predicted expiration date 03/24/2028
Patent term adjustment 690
U.S. Classifications 606/85  ·
International Classifications A61B1700  ·
Kind CodeB2
Related U.S. Application DataCROSS-REFERENCES TO RELATED APPLICATIONS
The present application is a continuation-in-part of U.S. patent application Ser. No. 11/429,377, filed May 4, 2006, entitled “Flexible Tissue Rasp,” and also claims the benefit under 35 USC 119(e) of U.S. Provisional Patent Application No. 60/869,070, filed Dec. 7, 2006, entitled “Flexible Tissue Removal Devices and Methods,” both of which are hereby incorporated fully by reference. The present application is related to, but does not claim priority from, PCT Patent Application Pub. No. PCT/US2005/037136, titled “Devices and Methods for Selective Surgical Removal of Tissue, filed Oct. 15, 2005, which is hereby incorporated fully by reference.
50 Claims, 24 Drawings


Abstract

A device for modifying tissue in a patient may include: an elongate body having a rigid proximal portion and a flexible distal portion having first and second major surfaces; a proximal handle coupled with the proximal portion of the body; one or more tissue modifying members disposed along the first major surface of the distal portion of the body; a guidewire coupled with and extending from the distal portion of the body; and a distal handle removably couplable with the guidewire outside the patient.

Independent Claims | See all claims (50)

  1. 1. A system for modifying tissue in a patient, the system comprising: a tissue modification device comprising: an elongate body having a proximal portion, and a flexible distal portion having opposing first and second major surfaces extending longitudinally; one or more tissue modifying members disposed along the first major surface, wherein the second major surface is an atraumatic surface; and a guidewire coupler near the distal end of the body configured to retain the proximal end of a guidewire relative to the guidewire coupler so that the tissue modification device may be pulled distally by pulling the guidewire distally and so that the tissue modification device may be released from the guidewire by pushing the guidewire proximally; a proximal handle configured to couple with the proximal portion of the tissue modification device; a guidewire configured to couple to the tissue modification device; and a distal handle configured to couple with the guidewire outside of the patient.
  2. 15. A device for modifying tissue in a patient, the device comprising: an elongate body comprising: a rigid proximal portion; a flexible distal portion; and an intermediate flexible portion disposed between the proximal and distal portions and having opposing first and second major surfaces extending longitudinally; one or more tissue modifying members disposed along the first major surface of the intermediate portion of the body but not the second major surface; and a guidewire coupler near the distal end of the body configured to retain the proximal end of a guidewire relative to the guidewire coupler so that the tissue modification device may be pulled distally by pulling the guidewire distally and so that the tissue modification device may be released from the guidewire by pushing the guidewire proximally.
  3. 29. A kit for modifying tissue in a patient, the kit comprising: a tissue modification device, comprising: a rigid shaft having a proximal end and a distal end; a flexible substrate extending from the distal end of the shaft; a proximal handle coupled with the shaft at or near its proximal end; one or more tissue modifying members disposed along one side of the substrate; and a guidewire coupler disposed on the substrate configured to retain the proximal end of the guidewire relative to the guidewire coupler so that the tissue modification device may be pulled distally by pulling the guidewire distally and so that the tissue modification device may be released from the guidewire by pushing the guidewire proximally; a guidewire configured to couple with the guidewire coupler; and a distal handle removably couplable with the guidewire outside the patient.
  4. 37. A device for modifying tissue, with a proximal handle at the substantially proximal end of the device with a flexible distal portion of the device configured for tissue modification, such that when the user simultaneously pulls on both the proximal and distal ends of the device the flexible portion of the device is pulled under tension against a target tissue with a rigid portion of the device between a handle and the flexible portion of the device with the flexible portion of the device containing tissue modification elements along a first surface that is opposite from an atraumatic second surface on the other side of the first surface with a guidewire coupler at the distal end of the flexible portion configured to retain the proximal end of the guidewire relative to the guidewire coupler so that the tissue modification device may be pulled distally by pulling the guidewire distally and so that the tissue modification device may be released from the guidewire by pushing the guidewire proximally.
  5. 45. A system for removing a target tissue of a patient, the system comprising: a distal elongate flexible portion having a first end and a second end with an axis therebetween, the flexible portion having a first surface extending along the axis and a second surface opposite the first surface, wherein the flexible portion is axially bendable in a first lateral orientation; a proximal portion extendable from the flexible portion configured so that movement of the proximal portion can shift the first surface toward a target region of the target tissue; a tissue modifying member disposed along the first surface to effect removal of the target region of the target tissue, wherein the second surface comprises an atraumatic surface; and a guidewire coupler at the distal end of the flexible portion configured to retain the proximal end of a guidewire relative to the guidewire coupler so that the tissue modification device may be pulled distally by pulling the guidewire distally and so that the tissue modification device may be released from the guidewire by pushing the guidewire proximally.

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