1. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Contemporary biopsy techniques including (a) fine-needle aspiration, (b) core needle biopsy, and (c) punch biopsy; adopted from Refs. [6] and [7] Figure Legend:

2. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Keyhole biopsy harvester [6] and its working principle combining optical and mechanical biopsy Figure Legend:

3. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Close-up of (a) sea urchin Echinus esculentus, adopted from Refs. [6] and [14], and its chewing organ Aristotle's lantern that served as a biological inspiration for (b) the biopsy harvester's crown-cutter [6] Figure Legend:

4. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Cutter designs of different tooth quantity (4, 6, 8, and 10 teeth with no bevel) and different bevel type (no, inner, outer, and inner and outer bevel on cutters with 6 teeth) Figure Legend:

5. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Experimental setup and the cutter's initial and final positions indicating the maximum gelatin deformation H Figure Legend:

6. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Generic tooth cross section of radius R, shell thickness t, and central angle θ. Moment of inertia of the tooth cross-section is evaluated about axes y (in) and y (out) for inward and outward bend, respectively. Figure Legend:

7. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 (a) Maximum tissue deformation results of the Ø 9 mm unsharpened crown-cutters of different tooth quantity when penetrated 9.8 mm. (b) Plot of force on tissue against cutter travel of the Ø 9 mm unsharpened crown-cutters of different tooth quantity. Figure Legend:

8. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 (a) Maximum tissue deformation results of the Ø 9 mm 6-teeth crown-cutters of different bevel type when penetrated 9.8 mm. (b) Plot of force on tissue against cutter travel of the Ø 9 mm 6-teeth crown-cutters of different bevel type. Figure Legend:

9. Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: Bioinspired Crown-Cutter—The Impact of Tooth Quantity and Bevel Type on Tissue Deformation, Penetration Forces, and Tooth Collapsibility J. Med. Devices. 2014;8(4):041009-041009-6. doi:10.1115/1.4027054 Plot of inward and outward tooth collapsibility expressed as a moment of inertia of a maximum tooth cross-section with respect to axes y (in) and y (out) against increasing tooth quantity Figure Legend: