Device for removing excrescences and polyps

• US 4,202,338 A
• Filed: 11/13/1978
• Issued: 05/13/1980
• Est. Priority Date: 11/18/1977
• Status: Expired due to Term

• Current Assignee: Richard Wolf GmbH (Richard & Annemarie Wolf- Stiftung)
• Original Assignee: Richard Wolf GmbH (Richard & Annemarie Wolf- Stiftung)
• Inventors: Bitrolf, Ehrenfried
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US05/959,502
• Time in Patent Office: 547 Days
• Field of Search: 128/303.14, 128/303.13, 128/303.15, 128/303.16, 128/303.17, 128/307, 128/309, 128/320, 30/116
• US Class Current: 606/47
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2018/1407 Loop

Abstract

A device for removing excrescences and polyps in a body cavity, has a resilient wire loop for fitting around the excresence or polyp, at the distal end of a tubular guide and connectible to a voltage source, the loop being movable by a proximal handle between a position in which the loop is retracted in the guide and an expanded position in which two opposed sides thereof terminate in a distal bulge, one of the sides of the loop having an inwardly kinked proximal portion in front of the distal end of the guide and the other side of the loop having at least two outwardly pointing kinks.

Claims

1. A device for removing excrescenses and polyps in a body cavity, comprising:

(a) a tubular guide having proximal and distal ends,

(b) a resilient wire loop for fitting around an excrescense or polyp, at the distal end of the guide and of generally oval configuration in an expanded position thereof,

(c) an actuating handle at the proximal end of the guide connected to said loop, for moving said loop between said expanded position and a position in which said loop is retracted in the distal end of the guide, and

(d) means for connecting said loop to a voltage source,

(e) said loop having, as considered in its expanded position,

(i) a small bulge at one end,

(ii) two opposed sides extending from said bulge towards said distal end of the guide, of which one side is of generally arcuate form,

(iii) an inwardly kinked proximal portion in said one of said two sides, in front of the distal end of the guide, and

(iv) at least two outwardly pointing kinks in the the other of said two sides.

2. A device as claimed in claim 1, wherein said other of said two sides of the loop has a slightly inwardly kinked portion in front of the distal end of the guide.

3. A device as claimed in claim 2, wherein said other side of the loop has substantially straight portions in front of, between and behind the outwardly pointing kinks.

4. A device as claimed in claim 3, wherein the straight portions have lengths which are at least substantially equal.

5. A device as claimed in claim 1, wherein said other side of the loop has substantially straight portions in front of, between and behind the outwardly pointing kinks.

6. A device as claimed in claim 5, wherein the straight portions have lengths which are at least substantially equal.