Methods and systems for controlling an ultrasonic handpiece based on sensed pressure

摘要

A system includes a handpiece configured to generate vibratory energy, and a generator coupled to the handpiece. The generator includes a processing device and a memory device having encoded thereon computer-readable instructions that are executable by the processing device to perform functions including receiving a pressure signal from the handpiece. The pressure signal is indicative of a pressure between the handpiece and a surgical implement. The functions further include determining the pressure between the handpiece and the surgical implement, comparing the pressure to a predetermined pressure range, and transmitting a control signal to the handpiece when the pressure is within the predetermined pressure range.

主权项

1. A method of controlling a handpiece, said method comprising:
receiving a pressure signal from the handpiece, the pressure signal indicative of a manually applied pressure generated by a user of the handpiece between the handpiece and the surgical implement by pressing the handpiece against the surgical implement; determining the pressure between the handpiece and the surgical implement; comparing the pressure to a predetermined pressure range; transmitting a signal to the handpiece causing the handpiece to transmit vibratory energy to the surgical implement to form a weld to stabilize body tissue with the weld when the determined pressure is within the predetermined pressure range indicating the manually applied pressure between the handpiece and the surgical implement is suitable for forming the weld; and determining whether the pressure has settled within the predetermined pressure range for at least a predetermined settling interval, wherein transmitting the signal further comprises transmitting the signal to the handpiece when the pressure has settled within the predetermined pressure range for at least the predetermined settling interval, wherein the predetermined settling interval is 2 seconds.