The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 1981
Filed:
Aug. 20, 1980
Larry S Matthews, Ann Arbor, MI (US);
Other;
Abstract
An universally applicable biopsy needle includes two counter-rotating tubes having oppositely facing sawteeth formed on the distal ends thereof. A gear system transmits a driving force to the tubes, causing the counter-rotation which permits the sawteeth to act in a sawing manner for penetration of bone samples and in a cutting manner for soft tissues. Use of an outer cannula allows safe insertion of the needle to the location of the desired sample, and various grasping means are used to extract the sample core. The concentric, telescoping needles provide a sample preserving the natural architecture and orientation of the tissue or cell types, while minimizing harming and maceration of the same.