Biopsy apparatus

• US 8,568,332 B2
• Filed: 05/25/2012
• Issued: 10/29/2013
• Est. Priority Date: 11/06/2000
• Status: Expired due to Term

• Current Assignee: Suros Surgical Systems Incorporated (Hologic Incorporated)
• Original Assignee: Suros Surgical Systems Incorporated (Hologic Incorporated)
• Inventors: Miller, Michael E.
• Primary Examiner(s): Towa, Rene
• Assistant Examiner(s): EISEMAN, ADAM JARED
• Application Number:
  US13/481,555
• Publication Number:
  US 20120302913A1
• Time in Patent Office: 522 Days
• Field of Search: 600/564, 600/566, 600/567, 604/19, 604/22, 604/27, 604/35, 604/164.01, 604/164.02, 604/164.11, 604/166.01, 606/167, 606/170, 606/171, 606/179, 606/180
• US Class Current: 600/566
• CPC Class Codes: A61B 10/0096 Casings for storing test samples A61B10/0038 and A61B10/0045 take precedence; preservation of living parts of the human or animal body A01N1/02; containers for retaining a material to be analysed B01L3/50; containers for enzymology or microbiology C12M1/16; swab-sampler being part of enzymology or microbiology container C12M1/30
• 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 2017/0023 disposable
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00539 hydraulically
• CPC Class Codes: A61B 2017/00544 pneumatically

Abstract

A biopsy apparatus having a disposable cutting element and a reusable handpiece is disclosed. The disposable cutting element includes an inner cannula that defines an inner lumen and terminates in a cutting edge. The inner cannula is slidably disposed within an outer cannula that defines an outer lumen that has a tissue-receiving opening. The inner cannula is driven by a rotary motor and a reciprocating motor. Both motors are constructed of a MRI compatible material.

Claims

1. A biopsy apparatus, comprising:

a disposable cutting element; and

a reusable handpiece,

wherein the disposable cutting element includes

an outer cannula defining an outer lumen, the outer cannula having a tissue-receiving opening disposed proximate a distal end of the outer cannula and in communication with the outer lumen, and

an inner cannula slidably disposed within the outer lumen, the inner cannula defining an inner lumen, and having open distal and proximal ends in communication with the inner lumen, the open distal end of the inner cannula comprising a cutting edge operable to sever tissue projecting through the tissue-receiving opening, the inner lumen comprising a tissue aspiration path extending from the open distal end to the open proximal end to allow a tissue sample to be aspirated from the open distal end to the open proximal end, and

wherein the reusable handpiece includes

a first device detachably coupled to the inner cannula to rotate the inner cannula within the outer cannula, and a second device detachably coupled to the inner cannula to translate the inner cannula within the outer cannula while the inner cannula rotates.

2. The biopsy apparatus of claim 1, wherein at least one of the first device and the second device comprises a pneumatic motor.

3. The biopsy apparatus of claim 2, wherein the first device is a pneumatic rotary motor and the second device is a pneumatic reciprocating motor.

4. The biopsy apparatus of claim 1, wherein the first device is a hydraulic rotary motor.

5. The biopsy apparatus of claim 1, wherein the second device is a hydraulic reciprocating motor.

6. The biopsy apparatus of claim 5, wherein the hydraulic reciprocating motor includes a hydraulic cylinder and a piston slidably disposed within the hydraulic cylinder.

7. The biopsy apparatus of claim 1, further comprising a drive gear having a plurality of longitudinal teeth disposed about a portion of a length of the inner cannula, wherein the first device is coupled to the drive gear teeth to rotate the drive gear and the inner cannula.

8. The biopsy apparatus of claim 7, further comprising an idler gear, wherein the first device is a hydraulic rotary motor, and the idler gear is coupled to the drive gear teeth and to the idler gear such that, when the hydraulic rotary motor rotates, the idler gear, the drive gear, and the inner cannula rotate.

9. The biopsy apparatus of claim 1, the disposable cutting element further comprising a tissue collection chamber in fluid communication with the inner cannula lumen, wherein the proximal end of the inner cannula is movably disposed within the tissue collection chamber.

10. The biopsy apparatus of claim 1, the reusable handpiece further comprising an idler gear for detachably coupling the first device to the inner cannula, such that, when the reusable handpiece is coupled to the disposable cutting element, the idler gear is detachably coupled to the inner cannula.

11. The biopsy apparatus of claim 10, the disposable cutting element further comprising a drive gear having a plurality of longitudinal teeth disposed about a portion of a length of the inner cannula, such that, when the reusable handpiece is coupled to the disposable cutting element, the idler gear is detachably coupled to the drive gear teeth.

12. The biopsy apparatus of claim 1, the reusable handpiece further comprising a push rod for detachably coupling the second device to the inner cannula, such that, when the reusable handpiece is coupled to the disposable cutting element, the push rod is detachably coupled to the inner cannula.

13. The biopsy apparatus of claim 12, the disposable cutting element further comprising a drive gear disposed about the inner cannula, the drive gear having an annular recess, such that when the reusable handpiece is coupled to the disposable cutting element, the push rod is detachably coupled to the drive gear annular recess.

14. The biopsy apparatus of claim 13, wherein the push rod has a forked end, and when the reusable handpiece is coupled to the disposable cutting element, the forked end is detachably coupled to the drive gear annular recess.

15. A biopsy apparatus, comprising:

a disposable cutting element; and

a reusable handpiece,

wherein the disposable cutting element includes

an outer cannula defining an outer lumen, the outer cannula having a tissue-receiving opening disposed proximate a distal end of the outer cannula and in communication with the outer lumen, and

an inner cannula slidably disposed within the outer lumen, the inner cannula defining an inner lumen, and having open distal and proximal ends in communication with the inner lumen, the open distal end of the inner cannula comprising a cutting edge operable to sever tissue projecting through the tissue-receiving opening, and

wherein the reusable handpiece includes

a first device and a second device, the first device detachably coupled to said inner cannula to rotate the inner cannula within the outer cannula, the second device detachably coupled to the inner cannula to translate the inner cannula within the outer cannula while the inner cannula rotates, wherein the first device has an axis of rotation that is spaced apart from the disposable cutting element, and the second device has an axis of translation that is spaced apart from the disposable cutting element.

16. The biopsy apparatus of claim 15, the disposable cutting element further comprising a tissue aspiration path extending from the open distal end of the inner cannula to the open proximal end of the inner cannula.

17. The biopsy apparatus of claim 15, wherein at least one of the first device and the second device comprises a hydraulic motor.

18. The biopsy apparatus of claim 17, wherein the first device is a hydraulic rotary motor, and the second device is a hydraulic reciprocating motor.

19. The biopsy apparatus of claim 15, the reusable handpiece further comprising an idler gear for detachably coupling the first device to the inner cannula such that when the reusable handpiece is coupled to the disposable cutting element, the idler gear is detachably coupled to the inner cannula.

20. The biopsy device of claim 15, the reusable handpiece further comprising a push rod for detachably coupling the second device to the inner cannula, such that when the reusable handpiece is coupled to the disposable cutting element, the push rod is detachably coupled to the inner cannula.