Method of manufacturing an ultrasonic tool
AssigneeSherwood Services AG
InventorsRobert Stoddard, Arlan James Reschke
Life of this patent
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Abstract
An ultrasonic surgical apparatus for fragmenting and aspirating tissue is disclosed. The apparatus includes a handpiece which encloses a transducer, an aspirating tool, and a connector body connecting the aspirating tool and the transducer. The aspirating tool includes a elongated boy having a centrally located throughbore, a hexagon engagement portion, a threaded proximal end and a distal tip. Methods of manufacturing aspirating tools having small and large diameter throughbores adapted for use with a common handpiece are also disclosed.
Claims20
A method of manufacturing an aspirating tool for use with an apparatus for ultrasonically fragmenting and aspirating tissue comprising the steps of:
- a) machining a piece of metal stock to form a body having a longitudinal axis and first an second ends, and a probe portion which tapers inwardly toward the second end;
- b) drilling a throughbore from the first end of the body to the second end of the body;
- c) forming a series of threads adjacent the first end of the body;
- d) masking the series of threads without masking the probe portion;
- and
- e) applying a titanium nitride coating onto the probe portion of the body.
A method for manufacturing an ultrasonic tool for use with an ultrasonic treatment apparatus, comprising the steps of:
- providing an elongated tool member defining a longitudinal axis, the tool member including a connecting portion having an external thread for connecting to the ultrasonic apparatus and a probe portion extending from the connecting portion for transmitting energy to tissue;
- forming a longitudinal bore in at least the probe portion;
- applying a wear resistive coating to the probe portion while preventing application of the wear resistive coating to the external thread of the connecting portion;
- and
- masking the connecting portion prior to the step of applying.
A method for manufacturing an ultrasonic tool for use with an ultrasonic treatment apparatus, comprising the steps of:
- providing an elongated tool member defining a longitudinal axis, the tool member including a connecting portion having an external thread for connecting to the ultrasonic apparatus and a probe portion extending from the connecting portion for transmitting energy to tissue;
- forming a longitudinal bore in at least the probe portion;
- applying a wear resistive coating to the probe portion while preventing application of the wear resistive coating to the external thread of the connecting portion;
- and
- working the elongated tool member whereby a cross-section of a wall of the probe portion gradually and continually decreases along an entire length of the probe portion from a first end adjacent the connecting portion to a second end displaced from the connecting portion.
A method of manufacturing an aspirating tool for use with an apparatus for ultrasonically fragmenting and aspirating tissue, comprising the steps of:
- a) machining piece of metal stock to form a tool body having a longitudinal axis and a body portion which tapers inwardly;
- b) drilling a fir t bore having a first diameter from a first end of the tool body towards a second end of the tool body partially through the tool body;
- and
- c) drilling a second bore having a second diameter smaller than the first diameter through the second end of the tool body to communicate with the first bore.
Dependencies are inferred from the claim text.