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US 2024/0398455 A9Published application
Systems and methods for the measurement of the state of cure of pmma in a surgical dispensing applicator
AssigneeOrthopatent, LLC
InventorsDaniel A. FUNK, Quang-Viet NGUYEN, Avonley C. NGUYEN
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Abstract
The invention comprises a system for aiding in the in-situ determination of the state of cure (or progress of cure) in bone cement which is a composition that cures in an exothermic reaction and having a device which comprises a frequency sensor joined to a circuit and to an indicator that emits a signal in response to a current emitted to the circuit by the sensor to monitor a state of cure. The invention also relates to surgical methods using the system.
Claims15
A system for sensing the state of cure progress of PMMA cement, comprising:
- a applicator for use during a surgery having a reservoir that contains a quantity of a cement during cure, a sensor assembly having a sensor probe which is in contact with the quantity of cement and which monitors one or more of the mechanical resonance spectra and frequency peaks of the sensor probe in mechanical contact with the quantity of cement and a signal processing system which is in communication with the sensor probe to determine and communicate a state of cure of the cement using one or more of either the mechanical resonance spectra and the frequency peaks of the sensor probe.
A surgical method, comprising:
- the steps of mixing the components of a bone cement and containing a quantity of the mixed cement within a surgical applicator during cure and monitoring the cure of the bone cement using a sensor assembly having a sensor probe which is in contact with the quantity of cement which monitors one or more of the mechanical resonance spectra and frequency peaks of the sensor probe in mechanical contact with the quantity of cement and a signal processing system which is in communication with the sensor probe to determine and communicate a state of cure of the cement based either the mechanical resonance spectra or the frequency peaks of the sensor probe.
Dependencies are inferred from the claim text.