Retrieval device

• US 9,204,888 B2
• Filed: 10/23/2013
• Issued: 12/08/2015
• Est. Priority Date: 06/08/2007
• Status: Active Grant

• Current Assignee: US Endoscopy Group Inc. (Steris Corporation)
• Original Assignee: United States Endoscopy Group Incorporated
• Inventors: Cherry, Terra, Boyce, Aaron, Kaye, Christopher J., Ranallo, Cynthia Ann, Uspenski, Alex
• Primary Examiner(s): Nguyen, Tuan V
• Assistant Examiner(s): NGUYEN, TIN DUC
• Application Number:
  US14/061,395
• Publication Number:
  US 20140052142A1
• Time in Patent Office: 776 Days
• Field of Search: 606/114, 606/113
• US Class Current: 1/1
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00287 Bags for minimally invasive surgery
• CPC Class Codes: A61B 2017/0034 adapted to be inserted through a working channel of an endoscope
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/00438 connectable to a finger
• CPC Class Codes: A61B 2017/22035 for retrieving or repositioning foreign objects
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop

Abstract

An endoscopic device for retrieving an object from within a human body is disclosed. The device includes a support assembly, a transmitting assembly, a wire, and a net element. The support assembly has a base and a tubular member. The transmitting assembly includes a handle and a motion transmitting link fixed to the handle and extending through at least a portion of the tubular member. The wire defines a loop portion and two leg portions. A proximal end of each leg portion is secured to the link by a first connection and the two leg portions are secured to each other by at least a second connection distal from the first connection. The net element has a distally protruding portion secured to the loop portion and a proximally protruding portion secured relative to the leg portions.

Claims

1. An endoscopic device for retrieving an object from within a human body, the device comprising:

a support assembly comprising a base and an elongated tubular member;

a transmitting assembly comprising a handle movable relative to the base, and a link having a first end fixed to the handle and a second end remote from the base, the link extending through at least a portion of the tubular member;

a wire defining a loop portion and two leg portions, wherein each leg portion is disposed proximal from the loop portion and a proximal end of each leg portion is secured to the second end of the link by a first connection, and the two leg portions are secured to each other by at least a second connection at a location between the first connection and the loop portion;

a net element having a distal portion secured to the loop portion and a proximal portion, the proximal portion of the net element secured to the two leg portions at a location proximal from the second connection;

wherein the loop portion is movable between an expanded position outside the tubular member and a collapsed position within the tubular member by action of the handle relative to the base.

2. The device of claim 1, wherein the second end of the link is within the tubular member when the loop portion is in the expanded position.

3. The device of claim 1, wherein a tether attaches the proximal portion of the net element to the leg portions.

4. The device of claim 1, wherein the second connection is a weld.

5. The device of claim 1, wherein the proximal portion comprises a tail.

6. The device of claim 1, wherein the wire further comprises a protruding tip at a distal end of the loop portion that prohibits the collapse of the loop portion during use.