BIOPSY CANNULA ADJUSTABLE DEPTH STOP

• US 20160324540A1
• Filed: 07/19/2016
• Published: 11/10/2016
• Est. Priority Date: 05/01/2006
• Status: Active Grant

• Current Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Original Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Inventors: Modi (fka Avimukta), Kreena R., Hibner, John A.
• Granted Patent: US 10,327,805 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 10/0041 Detection of breast cancer mammography by transillumination A61B5/0091, by X-rays A61B6/502, by ultrasonic means A61B8/0825
• 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 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 2017/00796 Breast surgery
• CPC Class Codes: A61B 2017/3411 with a plurality of holes, e.g. holes in matrix arrangement
• CPC Class Codes: A61B 2017/3492 against the outside of the body
• CPC Class Codes: A61B 2090/033 Abutting means, stops, e.g. abutting on tissue or skin
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself
• CPC Class Codes: A61B 2090/036 abutting on tissue or skin
• CPC Class Codes: A61B 2090/062 penetration depth
• CPC Class Codes: A61B 5/708 Breast positioning means

Abstract

A biopsy system with a grid plate used as either a lateral or medial compression plate of a localization fixture used with a breast coil includes a rotatable guide cube that may be inserted into a desired rectangular recess in the grid plate after rotating to position a selected guide hole in the desired spatial orientation. Versions of a guide cube include those rotatable in two axes to provide additional hole positions, angled holes, enlarged circular holes that function with a rotating guide to support a noncircular biopsy instrument cannula (e.g., trocar/sleeve combination, core biopsy probe of a biopsy device) for rotation. A rotating guide may have an unlocked state for easily sliding to a selected longitudinal position thereon. Thereafter, the rotating guide is locked to serve as a positive depth stop (e.g., quarter turn locking elastomeric rings, triangular and scissor clips, and shutter depth stops).

Claims

1. A device for use with a biopsy cannula, the device comprising:

a guiding portion defining a shaft aperture sized to receive and at least partially circumferentially encompass the biopsy cannula;

a locking member defining an elongate through hole configured to receive the biopsy cannula, wherein the locking member comprises one or more resilient ribs extending inwardly within the through hole, wherein the one or more resilient ribs are configured to bind against the biopsy cannula upon relative rotation between the biopsy cannula and the locking member to a locking position, wherein the locking member and guiding portion are configured to restrict the depth of insertion of the biopsy cannula through the guiding portion when the one or more resilient ribs of the locking members are bound against the biopsy cannula in a locking position.

2. The device of claim 1, wherein the locking member has flattened elongate sides.

3. The device of claim 1, wherein the elongate through hole has an inner corner, wherein at least one of the one or more resilient ribs crosses the inner corner.

4. The device of claim 1, wherein the locking member and biopsy cannula reach the locking position upon approximately a quarter turn of relative rotation between the biopsy cannula and the locking member.

6. The device of claim 1, wherein the guiding portion comprises a cube having a rectangular prism adjacent to at least two faces of the cube.

7. The device of claim 6, wherein the cube has a plurality of openings configured to guide the biopsy cannula at a plurality of orientations through the cube.