US 2010/0145352 A1 · HOOD METHOD AND DEVICE FOR ENDOSCOPIC SUBMUCOSAL DISSECTION

Abstract

A medical device and a method of using such medical device for removing targeted tissue from a body lumen in a patient is presented. The method generally comprises placing the distal end of the device through a natural orifice in the patient to a location that is proximate to the targeted tissue; deploying a T-anchor fastened to a suture strand through the targeted tissue; deploying a loop anchor into the tissue of the body lumen spaced away from the targeted tissue, whereas the suture strand is slidably received by the loop anchor; applying tension to the suture strand; cutting the tissue at a predetermined depth around the periphery of the targeted tissue; and removing the targeted tissue along with the T-anchor from the body lumen. The tension applied to the targeted tissue maintains the targeted tissue in a raised position and/or allows the physician to manipulate the targeted tissue relative to the tissue that is proximate to it.

Claims20

Dependent claims

A method for removing targeted tissue from a body lumen in a patient, the method comprising the steps of:

placing the distal end of an endoscope through a natural orifice in the patient to a location that is proximate to the targeted tissue;
deploying a T-anchor fastened to a suture strand through the targeted tissue;
deploying a loop anchor into the tissue of the body lumen spaced away from the targeted tissue, whereas the suture strand is slidably received by the loop anchor;
applying tension to the suture strand;
cutting the tissue at a predetermined depth around the periphery of the targeted tissue;
and
removing the targeted tissue along with the T-anchor from the body lumen;
wherein the tension applied to the targeted tissue maintains the targeted tissue in a raised position relative to the tissue proximate to the targeted tissue.

5 more elements

A medical device to lift targeted tissue, the device comprising:

a suture strand having a distal and proximal end;
a first anchor member having a bar fixed to the distal end of the suture strand;
a second anchor member having a bar and a flexible loop projecting away from the bar;
a flexible delivery needle defining at least one passageway sized to slidably receive the suture strand, the first anchor member, and the second anchor member;
the first anchor member positioned distal to the second anchor member within the needle, the suture strand passing through the loop of the second anchor member within the needle;
and
a stylet sized to be slidably received by the delivery needle;
the stylet being in communication with the second anchor member such that the stylet can cause the first anchor member and then the second anchor member to exit the needle in order for the physician to couple the first anchor member to the targeted tissue;
wherein when tension is applied to the suture strand, the suture strand slides through the loop of the second anchor member to move the first anchor member.

6 more elements

Dependencies are inferred from the claim text.

Hood method and device for endoscopic submucosal dissection

Life of this patent

Hood method and device for endoscopic submucosal dissection

Life of this patent

Abstract

Claims20