Device for resection and/or ablation of organic tissue by means of high-frequency current and resectoscope

• US 8,267,933 B2
• Filed: 08/21/2007
• Issued: 09/18/2012
• Est. Priority Date: 08/21/2006
• Status: Expired due to Fees

• Current Assignee: Jacques Hamou
• Original Assignee: Jacques Hamou
• Inventors: Hamou, Jacques
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): HUPCZEY, JR, RONALD JAMES
• Application Number:
  US11/842,592
• Publication Number:
  US 20080045945A1
• Time in Patent Office: 1,855 Days
• Field of Search: 600104-105, 606 32- 50
• US Class Current: 606/46
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/1407 Loop
• CPC Class Codes: A61B 2018/1435 Spiral
• CPC Class Codes: A61B 2018/144 Wire
• CPC Class Codes: A61B 2018/1861 with an instrument inserted into a body lumen or cavity, e.g. a catheter

Abstract

A device for removing organic tissue by means of high-frequency current comprises a loop carrier having a longitudinal axis and a distal end, a loop arranged at the distal end of the loop carrier and being able to be acted upon by high-frequency voltage, the loop having a loop end portion, a connection element connecting the loop with the loop carrier and having a distal connection element portion, the loop end portion and the distal connection element portion forming a wedge-shaped cutter.

Claims

1. A resectoscope for removing organic tissue by means of high-frequency current, comprising:

a shaft for receiving a device that can be acted upon by high-frequency voltage, said device comprising;

a loop carrier having a proximal end, a distal end, and a longitudinal axis extending from said proximal end to said distal end, said loop carrier able to rotate about said longitudinal axis relative to said shaft,

a loop arranged at said distal end of said loop carrier and being able to be acted upon by high-frequency voltage, said loop having a loop end portion, said loop having an approximate semi-circular shape extending over approximately 180 degrees, said loop extending in a plane transverse to said longitudinal axis of said loop carrier, and

a connection element connecting said loop with said loop carrier and having a distal connection element portion, said distal connection element portion extending obliquely with respect to the plane of the loop, said loop end portion and said distal connection element portion converging at an acute angle forming a wedge-shaped cutter having a point,

wherein said wedge-shaped cutter points in a direction of rotation of said loop carrier.

2. The resectoscope of claim 1, wherein said connection element is designed in a helical line shape.

3. The resectoscope of claim 1, wherein said connection element has a first strand and a second strand, a distal end area of said first strand forming said wedge-shaped cutter together with said loop end portion, and a distal end area of said second strand being connected to an end of said loop opposite said loop end portion.

4. The resectoscope of claim 3, wherein said first strand and said second strand of said connection element are wound in the shape of helical lines running in opposite directions.

5. The resectoscope of claim 1, wherein said connection element has a cutting edge on an inside of said connection element at least in the area of said distal connection element portion.