Ultrasonic scalpel center frequency dynamic adjustment method and ultrasonic scalpel

Abstract

The invention provides an ultrasonic scalpel center frequency dynamic adjustment method and an ultrasonic scalpel. The method comprises the following steps: S1, starting up and presetting bandwidth and center frequency according to attributes of an ultrasonic scalpel handle vibration system, and calculating a sweep frequency range; S2, conducting frequency sweeping to obtain initial resonant frequency of the ultrasonic scalpel handle vibration system; S3, setting the initial resonant frequency as a new center frequency to obtain a new resonant frequency range; S4, starting to work from the newcenter frequency, and carrying out resonance frequency tracking. According to the method, the optimal resonant frequency of an accessed knife bar is allowed to be inconsistent, the optimal frequencyswept by the ultrasonic scalpel can be used as the working frequency, knife bars of different types can be replaced in the using process, and each type of knife bars is allowed to play a better role.In addition, adaptability of the ultrasonic scalpel is enhanced, and the problem that frequency sweeping operation is complex and frequency sweeping design is unreasonable (the knife bars are bent orbroken) is solved.

Description

technical field

[0001] The invention relates to the field of medical equipment and medical technology, in particular to a method for dynamically adjusting the center frequency of an ultrasonic knife and the ultrasonic knife. Background technique

[0002] Ultrasonic scalpels with frequency tracking are more and more widely used in surgical operations, but during use, if the vertical pressure on the jaws or the longitudinal pressure on the bony blade is too large, it will cause the blade The vibration damping is too large, so that the resonant frequency rises. When the resonant frequency exceeds the frequency range of the transducer, the machine will alarm and stop working; if it needs to start working again, it needs to scan the frequency again and lock the frequency.

[0003] When the ultrasonic scalpel head is stuck in the tissue, the external load impedance changes, and the frequency is out of range or the frequency is lost. The alarm will appear and stop working. At this...

Examples

Embodiment 1

[0031] A method for dynamically adjusting the center frequency of an ultrasonic scalpel, comprising the following steps:

[0032] S1. According to the properties of the vibration system of the handle of the ultrasonic scalpel, the preset frequency width and center frequency, calculate the sweep frequency range when starting up the machine;

[0033] S2. Frequency scanning to obtain the initial resonance frequency of the vibration system of the handle of the ultrasonic scalpel;

[0034] S3. Set the initial resonant frequency as a new center frequency to obtain a new resonant frequency range;

[0035] S4. Start working from the new center frequency, and perform resonant frequency tracking.

[0036] In step S1, the frequency width is set to 2.0KHz. In this embodiment, the preset center frequency is 39KHz. According to the frequency width, the sweep frequency range is 38KHz to 40KHz. The essence of step S1 is a preparatory work, and the value of the preset center frequency can be...

Embodiment 2

[0043]The first thing to introduce is that the ultrasonic knife includes the driving system of the ultrasonic knife and the vibration system of the handle of the ultrasonic knife. The vibration system of the handle of the ultrasonic knife is composed of a transducer, a horn and a knife rod. The vibrator of the ultrasonic knife is fixed by the pre-tightening screw. The transducer converts the electrical energy of the power supply into mechanical energy of vibration. The horn amplifies the displacement or speed of mechanical vibration by gathering the ultrasonic energy to a small area. The model and type, the sound energy radiated by the cutter head; the shape of the jaw or the cutter head is determined according to the surgical method and surgical requirements.

[0044] During the use of the ultrasonic scalpel in the prior art, if the vertical pressure applied to the jaws or the longitudinal pressure applied to the bony cutter head is too large, the vibration damping of the cutt...

technical field

[0001] The invention relates to the field of medical equipment and medical technology, in particular to a method for dynamically adjusting the center frequency of an ultrasonic knife and the ultrasonic knife. Background technique

[0002] Ultrasonic scalpels with frequency tracking are more and more widely used in surgical operations, but during use, if the vertical pressure on the jaws or the longitudinal pressure on the bony blade is too large, it will cause the blade The vibration damping is too large, so that the resonant frequency rises. When the resonant frequency exceeds the frequency range of the transducer, the machine will alarm and stop working; if it needs to start working again, it needs to scan the frequency again and lock the frequency.

[0003] When the ultrasonic scalpel head is stuck in the tissue, the external load impedance changes, and the frequency is out of range or the frequency is lost. The alarm will appear and stop working. At this...

Examples

Embodiment 1

[0031] A method for dynamically adjusting the center frequency of an ultrasonic scalpel, comprising the following steps:

[0032] S1. According to the properties of the vibration system of the handle of the ultrasonic scalpel, the preset frequency width and center frequency, calculate the sweep frequency range when starting up the machine;

[0033] S2. Frequency scanning to obtain the initial resonance frequency of the vibration system of the handle of the ultrasonic scalpel;

[0034] S3. Set the initial resonant frequency as a new center frequency to obtain a new resonant frequency range;

[0035] S4. Start working from the new center frequency, and perform resonant frequency tracking.

[0036] In step S1, the frequency width is set to 2.0KHz. In this embodiment, the preset center frequency is 39KHz. According to the frequency width, the sweep frequency range is 38KHz to 40KHz. The essence of step S1 is a preparatory work, and the value of the preset center frequency can be...

Embodiment 2

[0043]The first thing to introduce is that the ultrasonic knife includes the driving system of the ultrasonic knife and the vibration system of the handle of the ultrasonic knife. The vibration system of the handle of the ultrasonic knife is composed of a transducer, a horn and a knife rod. The vibrator of the ultrasonic knife is fixed by the pre-tightening screw. The transducer converts the electrical energy of the power supply into mechanical energy of vibration. The horn amplifies the displacement or speed of mechanical vibration by gathering the ultrasonic energy to a small area. The model and type, the sound energy radiated by the cutter head; the shape of the jaw or the cutter head is determined according to the surgical method and surgical requirements.

[0044] During the use of the ultrasonic scalpel in the prior art, if the vertical pressure applied to the jaws or the longitudinal pressure applied to the bony cutter head is too large, the vibration damping of the cutt...

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