Method and apparatus for determining parameters of linear motion in a surgical instrument

Method and apparatus for determining parameters of linear motion in a surgical instrument

METHOD AND APPARATUS FOR DETERMINING PARAMETERS OF LINEAR MOTION IN A SURGICAL INSTRUMENT A surgical instrument, comprising a housing (110), an elongated shaft (140) extending distally from the housing and defining a first longitudinal axis. A firing rod (220) disposed at least partially within the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MCCUEN, DAVID M
Format: Patent
Sprache:eng
Schlagworte:
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Beschreibung
Zusammenfassung:METHOD AND APPARATUS FOR DETERMINING PARAMETERS OF LINEAR MOTION IN A SURGICAL INSTRUMENT A surgical instrument, comprising a housing (110), an elongated shaft (140) extending distally from the housing and defining a first longitudinal axis. A firing rod (220) disposed at least partially within the elongated shaft. A drive mechanism (200) disposed at least partially within the elongated shaft, the drive mechanism being in mechanical cooperation with the firing rod. A sensor (251) that includes a signal generator that generates a signal that varies with a change in electrical field between the firing rod and the elongated shaft. A measurement unit that measures a characteristic of the signal, and a data processor that computes a signal frequency based on the measured characteristic of the signal and detennines a parameter of the motion of the firing rod based on the signal frequency.