US 10,456,119 B2Granted

Biopsy actuator assembly

Assignee3DBiopsy, Inc.

InventorsNelson N. Stone, Timothy Patrick Crowley

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Abstract

A biopsy needle actuator includes an adjustable stop plate setting the distance a needle and cannula move when the actuator is fired, a shot counter tracking the number of shots taken with the actuator during a biopsy procedure, and a lifecycle indicator tracking the cumulative number of shots of the actuator during a recommended service life. A threaded rod sets the throw distance of the needle and cannula allowing the actuator to excise a biopsy tissue specimen of between 20 mm and 60 mm. A number wheel in the shot counter is moved upon firing of a needle carrier. The lifecycle indicator registers arming of the actuator and indicates when the mechanical components of the actuator need servicing. A biopsy needle within a cannula is mounted in the actuator where by the core bed of the needle is orientated downward when in use aiding in extraction of the tissue sample.

Claims33

Dependent claims

A biopsy device, comprising:

a biopsy needle actuator within a housing, the biopsy needle actuator, comprising:
a cannula carrier guide shaft adjacent a needle carrier guide shaft;
a cannula carrier with a front surface, the cannula carrier forming a tubular passage, wherein the cannula carrier guide shaft is slideably received within the cannula carrier tubular passage;
a needle carrier with a front surface, the needle carrier forming a tubular passage, wherein the needle carrier guide shaft is slideably received within the needle carrier tubular passage;
a stop plate, comprising:
a rear surface, wherein the stop plate rear surface faces the carrier front surfaces;
a tab extending from the stop plate toward the housing forming an indicator visible within a distance window framed by the housing;
a lead screw threadably received by the stop plate;
and
wherein rotation of the lead screw moves the stop plate on the cannula carrier guide shaft and needle carrier guide shaft;
a lifecycle indicator, comprising:
an indicator wheel presenting a first field and a second field;
wherein the housing forms a lifecycle indicator window framing the indicator wheel;
and
wherein the movement of the cannula carrier toward the cannula carrier guide shaft second end selectively rotates the indicator wheel.

12 more elements

A biopsy device, comprising:

a housing;
a biopsy needle actuator within the housing, comprising:
a cannula carrier guide shaft extending between a first end and a second end;
a needle carrier guide shaft extending between a first end and a second end;
a cannula carrier forming a tubular passage extending from a front end to a rear end, the cannula carrier guide shaft slideably received within the cannula carrier tubular passage, and wherein the cannula carrier is moveable between the guide shaft first end and second end;
a needle carrier forming a tubular passage extending from a front end to a rear end, the needle carrier guide shaft slideably received within the needle carrier tubular passage, and wherein the needle carrier is moveable between the guide shaft first end and second end;
a stop plate slideably received on the cannula carrier guide shaft and needle carrier guide shaft;
and
a lead screw threadably received by the stop plate, wherein rotation of the lead screw moves the stop plate between the guide shaft first ends and the carriers;
a lifecycle indicator comprising an indicator wheel rotated upon movement of the cannula carrier to the cannula carrier guide shaft second end;
an event counter comprising a first number wheel rotated upon movement of a firing button;
a sight formed on the housing the top of the housing;
a needle forming a notch with a core bed, wherein the needle is operably connected to the needle carrier;
and
wherein the core bed is orientated facing one hundred eighty degrees from the first side of the housing.

12 more elements

A biopsy device, comprising:

a housing;
a biopsy needle actuator within the housing, comprising:
a needle carrier guide shaft extending between a first end and a second end;
a needle carrier forming a tubular passage extending from a front end to a rear end, the needle carrier guide shaft slideably received within the needle carrier tubular passage, and wherein the needle carrier is moveable between the guide shaft first end and second end;
a stop plate slideably received on the needle carrier guide shaft;
and
a lead screw threadably received by the stop plate, wherein rotation of the lead screw moves the stop plate between the needle carrier guide shaft first end and the needle carrier front end;
a lifecycle indicator, comprising:
an indicator wheel presenting a first field and a second field;
wherein the housing forms a lifecycle indicator window framing the indicator wheel;
and
wherein the movement of the cannula carrier toward the cannula carrier guide shaft second end selectively rotates the indicator wheel.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/728,968Filed 10 Oct 2017 · us provisional application
Priority: 10 Oct 2016
Published: US 2018/0098757 A112 Apr 2018
Granted: 29 Oct 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61B 10/0266
Pointed or sharp biopsy instruments: means for severing sample
A61B 10/0275
Means for severing sample: with sample notch, e.g. on the side of inner stylet
A61B 90/03
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
G06M 1/163
Self-operating, e.g. by Geneva mechanism: with drums