# US 8,465,497 B2 · Tool for removing object from the body of a patient

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- Number: US 8,465,497 B2
- Document ID: US8465497B2
- Status: Granted
- Kind: B2
- Application number: 13/346,480
- Filed: 2012-01-09
- Published: 2012-05-03
- Granted: 2013-06-18
- Earliest claimed: 2000-06-20
- Assignees: Angiomed GmbH & Co. Medizintechnik KG
- Applicants: Gerhard Kessler; Christian Gohlmann; Rene Zusann
- Inventors: Gerhard Kessler; Christian Gohlmann; Rene Zusann
- Web page: https://patentgrep.com/patent/US8465497B2

## CPC

- 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)}
- A61B 2017/00526: {Methods of manufacturing}
- A61B 2017/2212: {having a closed distal end, e.g. a loop}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A method for making a tool to remove a discrete object from the body of a human or animal patient includes a single length of Nitinol tubing and a sheath. The tubing includes a tool head section at a distal end of the tubing and a shaft section extending from a proximal end of the tubing to the tool head section. The tool head section includes a slitted section and a non-slitted section. The non-slitted section is disposed at a distal most end of the tubing. The slitted section includes a plurality of longitudinal slits forming a plurality of strands.

## Claims

### Claim 1

A method for making a tool to remove a discrete object from the body of a human or animal patient, comprising:
providing a single Nitinol tubing having a proximal end and a distal end;
forming a tool head section by slitting the distal end of the tubing, the tool head section distinct from a shaft section extending proximally from the tool head section to the proximal end of the tubing, the tool head section having a first length and the shaft section having a second length greater than the first length, the forming comprising slitting the tool head section to form a slitted section having a third length and a non-slitted section having a fourth length less than the third length, the non-slitted section disposed at a distal most end of the tool head section, the slitted section including four longitudinal slits forming four strands separated from one another by about 90 degrees; and
surrounding the tubing with a sheath, the slitted section translating from a compact disposition within the sheath to an expanded spread position when advanced distally out of a distal end of the sheath.