# US 11,076,841 B2 · Dual movable blade biopsy tool for multiple core biopsy > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,076,841 B2 - Document ID: US11076841B2 - Status: Granted - Kind: B2 - Application number: 15/727,362 - Filed: 2017-10-06 - Published: 2018-03-08 - Granted: 2021-08-03 - Earliest claimed: 2009-11-25 - Assignees: Crux Medical Innovations, Inc. - Applicants: Crux Medical Innovations, Inc. - Inventors: Robert M. Clements; Andrew R. Face - Web page: https://patentgrep.com/patent/US11076841B2 ## CPC - A61B 10/04: Endoscopic instruments, e.g. catheter-type instruments - A61B 10/0266: {means for severing sample} - A61B 10/0283: {with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe (A61B10/025, A61B10/0266 take precedence)} - A61B 10/06: Biopsy forceps {, e.g. with cup-shaped jaws} - A61B 2010/0093: {slide rules} - A61B 2010/0225: {for taking multiple samples} - A61B 2090/033: {Abutting means, stops, e.g. abutting on tissue or skin} - A61B 2090/062: {penetration depth} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A biopsy device has a flexible sheath having a terminus with a distal chamber. The distal chamber is configured with a forward facing cutting edge. The forwarding facing cutting edge has multiple movable blades, in which the movable blades are two counter rotating blades configured perpendicular or angular to a long axis of the distal chamber. Each counter rotating blade is configured to pivot from a separate axis. The biopsy has a manipulation end controllable by the user to plunge the forward facing cutting edge at a set depth or a depth selected by the user, and to engage a cutting action by the multiple movable blades at the set depth or the selected depth. The movement of the forwarding facing cutting edge enables the biopsy device to acquire a plurality of specimens for storage in the distal chamber. ## Claims ### Claim 1 A biopsy device operable through an endoscope by a user comprising: a flexible sheath having a terminus with a distal chamber configured with a forward facing cutting edge comprising a plurality of movable blades, the plurality of movable blades including two counter rotating blades positioned perpendicular or beveled relative to a long axis of the distal chamber, each counter rotating blade of the two counter rotating blades configured to pivot from a separate corresponding axis; and a manipulation end controllable by the user to plunge the forward facing cutting edge at a set depth or a depth selected by the user and to engage a cutting action by the plurality of movable blades at the set depth or the depth selected to acquire a plurality of specimens storable in the distal chamber. ### Claim 2 (depends on 1) The biopsy device of claim 1, wherein the forward facing cutting edge includes a wire spanning across middle of the forward facing cutting edge and a plate beneath the wire, wherein the plurality of specimens are cut along the long axis to form a plurality of specimen half pairs, the specimen half pair kept separated by the plate. ### Claim 3 (depends on 1) The biopsy device of claim 1, wherein at least one movable blade of the plurality of movable blades is initiated to pivot by a pulling action from the manipulation end. ### Claim 4 (depends on 1) The biopsy device of claim 1, wherein at least one movable blade of the plurality of movable blades is initiated to pivot by a pushing action from the manipulation end. ### Claim 5 (depends on 1) The biopsy device of claim 1, wherein the set depth or the depth selected is effected by a deployment of depth stops from the flexible sheath adjacent to the distal chamber initiated from the manipulation end. ### Claim 6 (depends on 1) The biopsy device of claim 1, wherein the manipulation end includes a proximal chamber in fluid communication with the distal chamber, the proximal chamber configured to receive the plurality of specimens in an order and an orientation acquired upon exposure of a suction conveyed through the flexible sheath. ### Claim 7 (depends on 1) The biopsy device of claim 1, wherein the plurality of specimens are removed from the distal chamber by a flushing fluid conveyed from the manipulation end with preservation of specimen order and orientation. ### Claim 8 A biopsy system operable through an endoscope by a user comprising: a flexible sheath having a terminus with a distal chamber configured with a forward facing cutting edge comprising a plurality of movable blades, the plurality of movable blades including two counter rotating blades positioned perpendicular or beveled relative to a long axis of the distal chamber, each counter rotating blade of the two counter rotating blades configured to pivot from a separate corresponding axis; a manipulation end controllable by the user to plunge the forward facing cutting edge at a set depth or a depth selected by the user and to engage a cutting action by the plurality of movable blades at the set depth or the depth selected to acquire a plurality of specimens storable in the distal chamber; and a proximal chamber in fluid communication with the distal chamber, the proximal chamber configured to receive the plurality of specimens in an order and an orientation acquired upon exposure of a suction conveyed through the flexible sheath. ### Claim 9 (depends on 8) The biopsy system of claim 8, wherein the forward facing cutting edge includes a wire spanning across middle of the forward facing cutting edge and a plate beneath the wire, wherein the plurality of specimens are cut along the long axis to form a plurality of specimen half pairs, the specimen half pair kept separated by the plate. ### Claim 10 (depends on 8) The biopsy system of claim 8, wherein at least one movable blade of the plurality of movable blades is initiated to pivot by a pulling action from the manipulation end. ### Claim 11 (depends on 8) The biopsy system of claim 8, wherein at least one movable blade of the plurality of movable blades is initiated to pivot by a pushing action from the manipulation end. ### Claim 12 (depends on 8) The biopsy system of claim 8, wherein the set depth or the depth selected is effected by a deployment of depth stops from the flexible sheath adjacent to the distal chamber initiated from the manipulation end. ### Claim 13 (depends on 8) The biopsy system of claim 8, wherein the plurality of specimens are removed from the distal chamber by a flushing fluid conveyed from the manipulation end with preservation of specimen order and orientation. ### Claim 14 A biopsy device operable through an endoscope by a user comprising: a flexible sheath having a terminus with a distal chamber configured with a forward facing cutting edge comprising a plurality of movable blades, the plurality of movable blades including two counter rotating blades positioned beveled relative to a long axis of the distal chamber, each counter rotating blade of the two counter rotating blades configured to pivot from a separate corresponding axis; and a manipulation end controllable by the user to plunge the forward facing cutting edge at a set depth or a depth selected by the user and to engage a cutting action by the plurality of movable blades at the set depth or the depth selected to acquire a plurality of specimens storable in the distal chamber. ### Claim 15 (depends on 14) The biopsy device of claim 14, wherein the forward facing cutting edge includes a wire spanning across middle of the forward facing cutting edge and a plate beneath the wire, wherein the plurality of specimens are cut along the long axis to form a plurality of specimen half pairs, the specimen half pair kept separated by the plate. ### Claim 16 (depends on 14) The biopsy device of claim 14, wherein at least one movable blade of the plurality of movable blades is initiated to pivot by a pulling action from the manipulation end. ### Claim 17 (depends on 14) The biopsy device of claim 14, wherein at least one movable blade of the plurality of movable blades is initiated to pivot by a pushing action from the manipulation end. ### Claim 18 (depends on 14) The biopsy device of claim 14, wherein the set depth or the depth selected is effected by a deployment of depth stops from the flexible sheath adjacent to the distal chamber initiated from the manipulation end. ### Claim 19 (depends on 14) The biopsy device of claim 14, wherein the manipulation end includes a proximal chamber in fluid communication with the distal chamber, the proximal chamber configured to receive the plurality of specimens in an order and an orientation acquired upon exposure of a suction conveyed through the flexible sheath. ### Claim 20 (depends on 14) The biopsy device of claim 14, wherein the plurality of specimens are removed from the distal chamber by a flushing fluid conveyed from the manipulation end with preservation of specimen order and orientation.