Disposable biopsy unit
First Claim
1. A disposable biopsy unit for removable coupling to a handheld biopsy driver, comprising:
- a biopsy needle unit including a carrier, a biopsy needle and a cutting sheath, the carrier being configured to mount the biopsy needle and the cutting sheath, the biopsy needle having a sample removal chamber and a longitudinal axis, the cutting sheath being coaxially arranged with the biopsy needle, the cutting sheath being configured to move along the longitudinal axis relative to the biopsy needle;
a pump having an elongate cylinder and a plunger, the plunger configured to be movable inside the elongate cylinder in a first direction from a proximal end of the elongate cylinder to a distal end of the elongate cylinder to generate a vacuum and configured to be movable inside the elongate cylinder in a second direction from the distal end of the elongate cylinder to the proximal end of the elongate cylinder to build up pressure;
a connection element, the proximal end of the elongate cylinder being coupled in fluid communication with the biopsy needle via the connection element, the connection element configured to facilitate an arrangement of the disposable biopsy unit wherein the elongate cylinder is positioned such that the elongate cylinder and the biopsy needle are in a parallel arrangement; and
a holder piece configured to hold the elongate cylinder and the biopsy needle in the parallel arrangement.
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Accused Products
Abstract
A disposable biopsy unit includes a biopsy needle unit and a pump. The biopsy needle unit includes a carrier, a biopsy needle and a cutting sheath. The carrier is configured to mount the biopsy needle and the cutting sheath. The cutting sheath is configured to move along a longitudinal axis relative to the biopsy needle. The pump has an elongate cylinder and a plunger. The plunger is configured to be movable inside the elongate cylinder in a first direction from a distal end of the elongate cylinder to a proximal end of the elongate cylinder to generate a vacuum and configured to be movable inside the elongate cylinder in a second direction from the proximal end of the elongate cylinder to the distal end of the elongate cylinder to build up pressure. The distal end of the elongate cylinder is coupled in fluid communication with the biopsy needle.
533 Citations
20 Claims
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1. A disposable biopsy unit for removable coupling to a handheld biopsy driver, comprising:
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a biopsy needle unit including a carrier, a biopsy needle and a cutting sheath, the carrier being configured to mount the biopsy needle and the cutting sheath, the biopsy needle having a sample removal chamber and a longitudinal axis, the cutting sheath being coaxially arranged with the biopsy needle, the cutting sheath being configured to move along the longitudinal axis relative to the biopsy needle; a pump having an elongate cylinder and a plunger, the plunger configured to be movable inside the elongate cylinder in a first direction from a proximal end of the elongate cylinder to a distal end of the elongate cylinder to generate a vacuum and configured to be movable inside the elongate cylinder in a second direction from the distal end of the elongate cylinder to the proximal end of the elongate cylinder to build up pressure; a connection element, the proximal end of the elongate cylinder being coupled in fluid communication with the biopsy needle via the connection element, the connection element configured to facilitate an arrangement of the disposable biopsy unit wherein the elongate cylinder is positioned such that the elongate cylinder and the biopsy needle are in a parallel arrangement; and a holder piece configured to hold the elongate cylinder and the biopsy needle in the parallel arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A disposable biopsy unit for removable coupling to a handheld biopsy driver, comprising:
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a carrier; a biopsy needle assembly mounted to the carrier; and a pump including; an elongate cylinder, the elongate cylinder being connected in fluid communication with the biopsy needle assembly; a plunger configured to translate inside the elongate cylinder, the plunger having a rack; and a toothed crown nut configured to mesh with the rack, and the toothed crown nut being configured to rotatably engage an end portion of the elongate cylinder when the toothed crown nut is rotated in a first direction, and the toothed crowned nut is further configured to translate the plunger in a first longitudinal direction in the elongate cylinder to generate vacuum when the toothed crown nut is rotated in the first direction, and wherein the toothed crowned nut is configured for rotation in a second direction opposite the first direction to facilitate generation of pressure in the elongate cylinder via a translation of the plunger in a second longitudinal direction opposite the first longitudinal direction. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification