Biopsy system
First Claim
Patent Images
1. A handle assembly for operating a surgical system, the handle assembly comprising:
- a housing;
a trocar extending from a distal end of the housing;
a trocar driver operatively connected to the trocar via an axial force transmitting cable so as to axially move the trocar between advanced and retracted positions;
a knife extending from the distal end of the housing and disposed about the trocar; and
a motorized knife driver operatively connected to the knife via a torsion transmitting cable configured to rotate the knife relative to the trocar and axially translate the knife between retracted and advanced positions relative to the trocar.
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Abstract
A biopsy system for retrieving biopsy tissue samples from different regions of the body is disclosed. The biopsy system includes a single use loading unit having a trocar assembly and a knife assembly. A trocar driver is operably connected to the trocar assembly and is actuable to move a trocar between retracted and advanced positions. The trocar driver is disengaged from the trocar assembly prior to firing the trocar into a target tissue mass to reduce drag on the trocar during firing. A knife driver is operably connected to the knife assembly such that when actuated, a knife is both rotatably and axially advanced about the trocar.
322 Citations
18 Claims
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1. A handle assembly for operating a surgical system, the handle assembly comprising:
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a housing; a trocar extending from a distal end of the housing; a trocar driver operatively connected to the trocar via an axial force transmitting cable so as to axially move the trocar between advanced and retracted positions; a knife extending from the distal end of the housing and disposed about the trocar; and a motorized knife driver operatively connected to the knife via a torsion transmitting cable configured to rotate the knife relative to the trocar and axially translate the knife between retracted and advanced positions relative to the trocar. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A handle assembly for operating a surgical instrument, the handle assembly comprising:
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a housing defining an elongated body configured for operable engagement by a user; at least a first actuation shaft extending from a distal end of the housing for obtaining a biopsy with a trocar and/or knife; a torsion transmitting cable operatively connected to a motor and the first actuation shaft and configured to impart axial translation to the actuation shaft to perform a first function on the surgical instrument and impart rotation to the actuation shaft to perform a second function on the surgical instrument. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A biopsy system, comprising:
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a handle assembly including a housing; a trocar extending from the housing and defining a basket near a distal end thereof; a knife extending from a distal end of the housing and defining a lumen therethrough, wherein the trocar is operatively disposed within the lumen of the knife; and a cable operatively connected to a motor and at least one of the knife and the trocar, wherein the cable is configured and adapted to impart axial translation and rotation to at least one of the knife and the trocar. - View Dependent Claims (15, 16, 17, 18)
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Specification