Adjustable sample size tissue sampling device

Patent metadata

Field	Value
Publication number	US-8968211-B2
Application number	US-201113293162-A
Country	US
Kind code	B2
Filing date	Nov 10, 2011
Priority date	Nov 11, 2010
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

Among other things, there is disclosed a biopsy needle capable of taking samples of varying size. In particular embodiments, a user selects one of a plurality of sample-size settings, which sets the needle to a particular cannula throw-length by moving an internal wall against which a spring engages. For a shorter throw, the wall is in a forward position and the cannula is retracted the smaller amount to compress the spring. For a longer throw, the wall is in a rearward position and the cannula is retracted a larger amount to compress the spring.

First claim

What is claimed is:

1. An adjustable-throw biopsy needle, comprising:
an elongated tissue-cutting member;
a housing connected to said tissue-cutting member for propelling said tissue-cutting member forward into tissue when a tissue sample is desired, said housing including a wall within said housing movable between at least a first and second position and a spring that engages said wall,
wherein said first position corresponds to a first throw-length of said tissue-cutting mem…

Assignees

• Ferree Chris
• Brown Casey
• Hacker Allen
• Joaquin Danielle
• Melchiorri Anthony
• Schreiber Torsten
• Cook Medical Technologies Llc

Inventors

• Ferree Chris
• Brown Casey
• Hacker Allen
• Joaquin Danielle
• Melchiorri Anthony
• Schreiber Torsten

Classifications

• A61B2010/0208

  Human Necessities · mapped topic

• A61B2010/0093

  Human Necessities · mapped topic

• A61B10/0275 Primary

  Human Necessities · mapped topic