Methods and Devices for Automated Biopsy and Collection of Soft Tissue

• US 20070156064A1
• Filed: 02/06/2007
• Published: 07/05/2007
• Est. Priority Date: 03/24/1994
• Status: Active Grant

• Current Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Original Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Inventors: Stuart, J. Michael, Burbank, Fred, Ritchart, Mark, Galt, Kenneth
• Granted Patent: US 7,981,050 B2
• Time in Patent Office: Days
• US Class Current: 600/564
• CPC Class Codes: A61B 10/0266 means for severing sample
• CPC Class Codes: A61B 10/0275 with sample notch, e.g. on the side of inner stylet
• CPC Class Codes: A61B 10/0283 with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe A61B10/025, A61B10/0266 take precedence
• CPC Class Codes: 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
• CPC Class Codes: A61B 2010/0208 Biopsy devices with actuators, e.g. with triggered spring mechanisms
• CPC Class Codes: A61B 2010/0225 for taking multiple samples
• CPC Class Codes: A61B 2017/303 with four or more legs
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 8/0841 for locating instruments

Abstract

Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Improved features include the ability to retrieve and evaluate multiple tissue samples during a single insertion procedure, without physical handling of the samples, as well as constructional features, such as a molded tissue cassette housing, variant vacuum port embodiments suited for different tissue environments, and a method for backflushing the instrument to remove biological debris, among others.

Claims

1-26. -26. (canceled)

27. A biopsy device comprising:

an outer hollow cannula having a closed tissue piercing distal tip and a lateral tissue receiving port disposed proximally of the distal tip;

a hollow inner cutting member having a sharpened distal end for severing tissue received in the lateral tissue receiving port of the outer hollow cannula; and

a rotatably driven tissue sample holder disposed proximally of the lateral tissue receiving port, wherein the rotatably driven tissue sample holder is adapted to receive at least one tissue sample severed by the hollow inner cutter.

28. The biopsy device of claim 27 wherein the rotatably driven tissue sample holder is adapted to receive multiple tissue samples.

29. The biopsy device of claim 28 wherein the rotatably driven tissue sample holder comprises a plurality of tissue sample chambers.

30. The biopsy device of claim 27 wherein rotatably driven tissue sample holder is rotatably driven by a drive motor.

31. The biopsy device of claim 30 wherein the rotatably driven tissue sample holder is belt driven by the drive motor.

32. The biopsy device of claim 27 wherein the rotatably driven tissue sample holder comprises a belt driven rotary tissue cassette.