Self-contained handheld biopsy needle
First Claim
1. A biopsy device, comprising:
- a housing;
a biopsy needle configured to project from the housing, the biopsy needle having a first cylindrical member that defines a sample chamber and a side port that opens to the sample chamber, and a second cylindrical member that has a side opening that defines a longitudinally oriented cutting edge, the first cylindrical member and the second cylindrical member being rotatable relative to each other;
a pump coupled to the biopsy needle, the pump configured to generate one of a vacuum and a pressure in the sample chamber;
a prime mover;
a first transmission configured to be driven by the prime mover to operate the pump;
a second transmission configured to be driven by prime mover, the second transmission being configured to rotate at least one of first cylindrical member and the second cylindrical member of the biopsy needle to sever tissue with the longitudinally oriented cutting edge.
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Accused Products
Abstract
A biopsy device includes an elongate inner sheath rotatably coupled to a first drive mechanism. The elongate inner sheath has a side port that opens to a sample chamber in the elongate inner sheath. An elongate outer sheath is rotatably coupled to a second drive mechanism. The elongate outer sheath is coaxial with the elongate inner sheath. The elongate outer sheath includes a side opening having a cutting edge having a lengthwise orientation. The elongate inner sheath is configured for rotation relative to the elongate outer sheath via the first drive mechanism, and the elongate outer sheath is configured for rotation relative to the elongate inner sheath via the second drive mechanism such that the cutting edge passes over the side port to sever tissue.
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Citations
20 Claims
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1. A biopsy device, comprising:
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a housing; a biopsy needle configured to project from the housing, the biopsy needle having a first cylindrical member that defines a sample chamber and a side port that opens to the sample chamber, and a second cylindrical member that has a side opening that defines a longitudinally oriented cutting edge, the first cylindrical member and the second cylindrical member being rotatable relative to each other; a pump coupled to the biopsy needle, the pump configured to generate one of a vacuum and a pressure in the sample chamber; a prime mover; a first transmission configured to be driven by the prime mover to operate the pump; a second transmission configured to be driven by prime mover, the second transmission being configured to rotate at least one of first cylindrical member and the second cylindrical member of the biopsy needle to sever tissue with the longitudinally oriented cutting edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A biopsy device, comprising:
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a biopsy needle having a first shaft that defines a longitudinal axis, a sample chamber, and a side port leading to the sample chamber, and having a rotatable shaft movably coupled to the first shaft and configured to rotate around the longitudinal axis, the rotatable shaft having a cutting blade configured to cut tissue; a pump coupled to the biopsy needle and configured to generate a vacuum in the sample chamber to draw tissue into the sample chamber; and a motor and a transmission mechanism, the transmission mechanism being configured to apply a motive force from the motor to the pump to establish a vacuum in the sample chamber, and configured to transmit motive force from the motor to the biopsy needle to rotate the rotatable shaft to progressively move the cutting blade past the side port to cut a tissue sample.
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12. A biopsy device, comprising:
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a first drive mechanism; an elongate inner sheath rotatably coupled to the first drive mechanism, the elongate inner sheath having a side port that opens to a sample chamber in the elongate inner sheath; a second drive mechanism; an elongate outer sheath rotatably coupled to the second drive mechanism, the elongate outer sheath being coaxial with the elongate inner sheath, the elongate outer sheath including a side opening having a cutting edge, the cutting edge having a lengthwise orientation, the elongate inner sheath configured for rotation relative to the elongate outer sheath via the first drive mechanism, and the elongate outer sheath configured for rotation relative to the elongate inner sheath via the second drive mechanism such that the cutting edge passes over the side port to sever tissue. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification