MRI compatible surgical biopsy device having a tip which leaves an artifact

• US 20030109801A1
• Filed: 12/12/2001
• Published: 06/12/2003
• Est. Priority Date: 12/12/2001
• Status: Active Grant

• Current Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Pyzoha, Jessica M., Rhad, Edward A., Freeman, Lyn
• Granted Patent: US 7,192,404 B2
• Time in Patent Office: Days
• US Class Current: 600/564
• 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 2017/00911 for fields applied by a magnetic resonance imaging system
• CPC Class Codes: A61B 2090/374 NMR or MRI
• CPC Class Codes: A61B 2090/3954 magnetic, e.g. NMR or MRI

Abstract

A biopsy device which is compatible for use with a magnetic resonance imaging machine. The device includes a non-metallic elongated substantially tubular needle having a distal end, a proximal end, a longitudinal axis therebetween, and a port on the elongated needle for receiving a tissue sample. The device further includes a sharpened distal tip for insertion within tissue. The sharpened distal tip is attached to the distal end of the needle and at least partially comprises a material which will leave an artifact under magnetic resonance imaging.

Claims

1. A biopsy device which is compatible for use with a magnetic resonance imaging machine, said device comprising:

a. a non-metallic elongated substantially tubular needle having a distal end, a proximal end, a longitudinal axis therebetween, and a port on said elongated needle for receiving a tissue sample; and

b. a sharpened distal tip for insertion within tissue, said sharpened distal tip attached to said distal end of said needle and at least partially comprising a material which will leave an artifact under magnetic resonance imaging.

2. The device of claim 1 wherein said needle comprises a thermoplastic.

3. The device of claim 1 wherein said needle comprises a glass fiber reinforced polymer resin.

4. The device of claim 1 wherein said material which will leave an artifact under magnetic resonance imaging is selected from the group comprising:

gadolinium, titanium, aluminum, copper, brass and bronze.

5. A biopsy device which is compatible for use with a magnetic resonance imaging machine, said device comprising:

a. a non-metallic elongated substantially tubular needle having a distal end, a proximal end, a longitudinal axis therebetween, and a port on said elongated needle for receiving a tissue sample; and

b. a sharpened distal tip for insertion within tissue, said sharpened distal tip attached to said distal end of said needle, said distal tip having a hollow cavity which is at least partially filled with a material which will leave an artifact under magnetic resonance imaging.

6. The device of claim 5 wherein said needle comprises a thermoplastic.

7. The device of claim 5 wherein said needle comprises a glass fiber reinforced polymer resin.

8. The device of claim 5 wherein said material which will leave an artifact under magnetic resonance imaging is selected from the group comprising:

gadolinium, titanium, aluminum, copper, brass and bronze.

9. A biopsy device which is compatible for use with a magnetic resonance imaging machine, said device comprising:

a. a handle and a non-metallic elongated substantially tubular needle having a proximal end attached to said handle, a distal end extending therefrom, a longitudinal axis therebetween, and a lumen extending therethrough, said needle further including a port for receiving a tissue sample;

b. a sharpened distal tip for insertion within tissue, said sharpened distal tip attached to said distal end of said needle and at least partially comprising a material which will leave an artifact under magnetic resonance imaging; and

c. a cutter, movable within said lumen, for obtaining a sample of tissue when the tissue is disposed within said port.

10. The device of claim 9 wherein said needle comprises a thermoplastic.

11. The device of claim 9 wherein said needle comprises a glass fiber reinforced polymer resin.

12. The device of claim 9 wherein said material which will leave an artifact under magnetic resonance imaging is selected from the group comprising:

gadolinium, titanium, aluminum, copper, brass and bronze.