US 2020/0138418 A1 · BIOPSY DEVICE

Abstract

A biopsy device includes a housing having a vacuum port, a cutter hub and attached cutter being slidably mounted in the housing so that the cutter hub and cutter are movable between a proximal, armed position, and a distal, fired position. A sealed cutter spring well with a cutter firing spring seated therein is disposed within the housing, wherein a proximal end of the cutter hub comprises a movable distal wall of the spring well so that proximal movement of the cutter hub compresses the cutter firing spring. A vacuum lumen is in communication with each of the vacuum port and spring well. A cutter arming valve assembly having a valve member is disposed in the vacuum lumen and selectively configurable to place the spring well in communication with the vacuum port for arming the cutter, or with atmosphere for firing the cutter.

Claims20

Dependent claims

A biopsy device, comprising:

an elongated housing having a vacuum port;
a cutter hub slidably mounted in and/or to the housing;
a cutter having a proximal portion coupled to the cutter hub, wherein the respective cutter hub and cutter are movable relative to the housing between a proximal, armed position, and a distal, fired position;
a sealed cutter spring well fixedly disposed within the housing;
a cutter firing spring seated in the cutter spring well, wherein proximal movement of the cutter hub relative to the housing compresses the cutter firing spring;
a vacuum lumen in communication with each of the vacuum port and the cutter spring well;
and
a cutter arming valve assembly having a valve member disposed in or adjacent to the vacuum lumen, wherein the cutter arming valve assembly is selectively configurable to place the cutter spring well in communication with the vacuum port via the vacuum lumen for arming the cutter, or in communication with atmosphere for firing the cutter.

5 more elements

A biopsy device, comprising:

a housing having a vacuum port;
an outer cannula having a lumen and a tissue penetrating distal end, wherein a proximal end portion of the outer cannula is movably coupled to the housing, a distal portion of the outer cannula having a having a side tissue resection window;
a cutter having a distal portion slidably disposed in the outer cannula lumen, wherein the cutter is movably coupled to the housing, and wherein a proximal portion of the cutter extends out of a proximal end opening of the outer cannula;
an outer cannula firing member movably disposed in said housing, wherein a proximal end portion of the outer cannula is coupled to the outer cannula firing member;
a cutter firing member movably disposed in said housing, wherein a proximal portion of the cutter is coupled to the cutter firing member;
an outer cannula firing spring seated in an outer cannula firing spring chamber within the housing, wherein proximal movement of the outer cannula firing member relative to the housing compresses the outer cannula firing spring;
a first cutter firing spring seated in a first cutter firing spring chamber within the housing,
a second cutter firing spring seated in a second cutter firing spring chamber within the housing, wherein proximal movement of the cutter firing member relative to the housing compresses the first and second cutter firing springs;
a cutter vacuum lumen that is in fluid communication with each of the vacuum port, the first cutter firing spring chamber and the second cutter firing spring chamber;
and
a cutter arming valve member movably disposed in the cutter vacuum lumen and configured to selectively simultaneously place the first and second cutter firing spring chambers in communication with the vacuum port or to simultaneously isolate the first and second cutter firing spring chambers from the vacuum port.

8 more elements

A biopsy device, comprising:

a housing having a vacuum port;
an outer cannula having a lumen and a tissue penetrating distal end, wherein a proximal end portion of the outer cannula is movably coupled to the housing, a distal portion of the outer cannula having a having a side tissue resection window;
a cutter having a distal portion slidably disposed in the outer cannula lumen, wherein the cutter is movably coupled to the housing, and wherein a proximal portion of the cutter extends out of a proximal end opening of the outer cannula;
an outer cannula firing member movably disposed in said housing, wherein a proximal end portion of the outer cannula is coupled to the outer cannula firing member;
a cutter firing member movably disposed in said housing, wherein a proximal portion of the cutter is coupled to the cutter firing member;
an outer cannula firing spring seated in an outer cannula firing spring chamber within the housing, wherein proximal movement of the outer cannula firing member relative to the housing compresses the outer cannula firing spring;
a cutter firing spring seated in a cutter firing spring chamber within the housing, wherein proximal movement of the cutter firing member relative to the housing compresses the cutter firing spring;
an outer cannula vacuum lumen in fluid communication with the vacuum port and the outer cannula firing spring chamber;
a cutter vacuum lumen in fluid communication with the vacuum port and the cutter firing spring chamber;
an outer cannula arming valve disposed adjacent the outer cannula vacuum lumen and configured to selectively place the outer cannula firing spring chamber in communication with the vacuum port or to isolate the outer cannula firing spring chamber from the vacuum port;
and
a cutter arming valve disposed adjacent the cutter vacuum lumen and configured to selectively place the cutter firing spring chamber in communication with the vacuum port or to isolate the cutter firing spring chamber from the vacuum port.

9 more elements

Dependencies are inferred from the claim text.

Biopsy device

Life of this patent

Biopsy device

Life of this patent

Abstract

Claims20