Biopsy device with sharps reduction feature

• US 7,806,835 B2
• Filed: 11/20/2007
• Issued: 10/05/2010
• Est. Priority Date: 11/20/2007
• Status: Active Grant

• Current Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Original Assignee: Devicor Medical Products Incorporated (Danaher Corporation)
• Inventors: Hibner, John A., Parihar, Shailendra K., Nuchols, Richard P., Andreyko, Michael J., Rhad, Edward A.
• Primary Examiner(s): Hindenburg; Max
• Assistant Examiner(s): Stout; Michael C
• Application Number:
  US11/942,960
• Publication Number:
  US 20090131822A1
• Time in Patent Office: 1,050 Days
• Field of Search: 600/564, 600/565, 600/566, 600/567, 600/568
• US Class Current: 600/567
• 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 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 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61B 34/25 User interfaces for surgical systems
• CPC Class Codes: A61M 1/71 Suction drainage systems containers therefor A61M1/60, A61M1/64; negative pressure wound therapy systems A61M1/90
• CPC Class Codes: A61M 1/72 Cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 1/76 Handpieces specially for suction-irrigation A61M1/774, aspiration tips A61M1/84
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/782 using valves with freely moving parts, e.g. float valves
• CPC Class Codes: A61M 2205/123 with incorporated reservoirs
• CPC Class Codes: A61M 2205/128 with incorporated valves

Abstract

A biopsy device includes a cannula, a cutter disposed within the cannula, a needle hub having a gear for rotating the cannula, a mechanism for rotating and translating the cutter within the cannula, and a body portion. The cutter rotation and translation mechanism includes a first component that is secured to the cutter and a second component that is secured to the body portion. The body portion includes a tab that is configured to retain the axial position of the cannula and needle hub relative to the body until the tab is depressed or removed. The body is configured to permit the cannula and the needle hub to be pulled axially from the body only after the tab has been depressed or removed. The cutter can then be pulled axially from the body by unscrewing the first component of the cutter rotation and translation mechanism from the second component.

Claims

1. A biopsy probe, wherein the biopsy probe comprises:

(a) a probe body including a proximal portion and a distal portion;

(b) a cannula having a tissue piercing tip, wherein the cannula extends from the distal portion of the probe body, wherein the cannula includes a proximal hub portion extending proximally into the probe body, wherein the cannula defines a longitudinal axis; and

(c) a cutter translatable relative to the cannula, wherein at least a portion of the cutter extends into the probe body;

wherein the cannula and the cutter are removably secured relative to the probe body, wherein the probe body comprises a retention feature configured to selectively retain the cannula relative to the probe body, wherein the retention feature is operable to permit the cannula, including its proximal hub portion, to be removed relative to the probe body along the longitudinal axis defined by the cannula.

2. The biopsy probe of claim 1, wherein the needle hub includes a thumbwheel distal to the probe body.

3. The biopsy probe of claim 1, wherein the retention feature comprises a tab.

4. The biopsy probe of claim 3, wherein the tab is resilient, such that the tab is configured to bend relative to the probe body to permit the cannula to be removed relative to the probe body.

5. The biopsy probe of claim 3, wherein the tab is configured to break away from the probe body.

6. The biopsy probe of claim 1, wherein the cutter is configured to be removed relative to the probe body after the cannula has been removed relative to the probe body.

7. The biopsy probe of claim 1, further comprising a cutter rotation and translation mechanism, wherein the cutter rotation and translation mechanism comprises a first component unitarily secured to the cutter and a second component fixedly secured relative to the probe body.

8. The biopsy probe of claim 7, wherein the first component and the second component comprise engaged threaded portions.

9. The biopsy probe of claim 8, wherein the cutter is removable relative to the probe body, after removal of the cannula relative to the probe body, by unscrewing the first component relative to the second component.

10. The biopsy probe of claim 1, wherein the cannula comprises a transverse aperture for receiving tissue.

11. The biopsy probe of claim 1, wherein the cutter is disposed within the cannula.