Adjustable resection device and related methods of use

Patent metadata

Field	Value
Publication number	US-9629647-B2
Application number	US-201213727345-A
Country	US
Kind code	B2
Filing date	Dec 26, 2012
Priority date	Dec 27, 2011
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A medical device and related method of use for resecting a tissue. The medical device may include an elongate member having a proximal end, a distal end, and a lumen extending therebetween. The elongate member may include a distal portion defining a cavity having an opening. In addition, a mechanism may be configured to adjust a volume of the cavity by altering a depth of the cavity.

First claim

What is claimed is:

1. A medical device comprising:
a member having a proximal end, a distal end, and a lumen extending therebetween;
a hood coupled to a distal portion of the member, the hood defining a distal-facing cavity configured to receive tissue; and
a limiter configured to selectively control a volume of tissue received in the hood, the limiter including a distalmost surface configured to abut tissue to limit proximal movement of the tissue into the hood, wherein movement of the limiter controls the volume of tissue received by adjusting a length of the cavity without adjusting a diameter of the cavity, where the length of the cavity is measured from the distalmost surface of the limiter to a distalmost end of the hood, and wherein the limiter is disposed within the cavity and moves relative to a proximal end of the cavity,
wherein the limiter includes a suction tube.

2. The medical device of claim 1 , wherein the hood is removably coupled to the distal portion of the member.

3. The medical device of claim 1 , wherein the limiter includes a second member extending distally from within the member and disposed within the cavity, wherein a length of the limiter in the cavity is adjustable.

4. The medical device of claim 1 , further comprising a mechanism for pulling the tissue into the hood.

5. The medical device of claim 1 , wherein pulling the limiter increases the volume of the tissue received.

6. The medical device of claim 1 , wherein the limiter is configured so tissue received by the cavity is completely exterior to the limiter.

7. A method for resecting tissue, the method comprising:
advancing a resection device to a desired location proximate a bodily wall, the resection device comprising:
a member having a proximal end, a distal portion, and a lumen extending therebetween;
a hood coupled to the distal portion of the member, the hood defining a cavity having a distal-facing opening; and
a limiter including a suction tube, wherein the limiter is configured to selectively control a volume of tissue received in the hood and includes a distalmost surface configured to abut tissue to limit proximal movement of the tissue into the hood, wherein movement of the limiter controls the volume of tissue received by adjusting a length of the cavity without adjusting a diameter of the cavity, where the length of the cavity is measured from the distalmost surface of the limiter to a distalmost end of the hood, and wherein the limiter is disposed within the cavity and moves relative to a proximal end of the cavity;

adjusting the length of the cavity by moving the limiter;
drawing tissue on the bodily wall into the hood; and
excising the tissue.

Assignees

• Smith Paul
• Raybin Samuel
• Boston Scient Scimed Inc

Inventors

• Smith Paul
• Raybin Samuel

Classifications

• A61B17/320016 Primary

  Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence) · CPC title

• A61B2090/033

  Abutting means, stops, e.g. abutting on tissue or skin · CPC title

• A61B2017/00336

  with a protective sleeve, e.g. retractable or slidable · CPC title

• A61B2017/00818

  Treatment of the gastro-intestinal system · CPC title

• A61B1/00089

  Hoods · CPC title