Technology / Applications
PainVision is a device that compares the level of pain to the level of stimulating current (stimulation by pulse current). Pain is quantitatively assessed by measuring the stimulating current that is acknowledged by the patient as being equivalent in sensation to pain. Before evaluating pain, the baseline (Current Perception Threshold) is measured to eliminate individual variability due to various factors.
The pain level is a non-dimensional parameter at zero when no pain is felt, presenting the level of genuine pain in the rage of 2000+.
PainVision takes measurements using electrical stimulation with a low-frequency current (50 Hz, 0 – 256 μA). A stimulating electrode needs to be placed on the inner side of the forearm, avoiding areas of pain. Current Perception Threshold and Pain Equivalent Current are measured three times by gradually increasing the stimulating current. The results will be recorded in the Software, and the pain level will be calculated.
By measuring the degree of pain, PainVision allows quantitative assessment of the intensity of pain and the effect of treatment.
Since pain is essentially a patient’s subjective sense, assessment of pain is complicated by bias and psychological factors. Therefore, conducting an objective assessment of pain is associated with many difficulties. The followings are the methods that have been used traditionally. Combination of these methods with assessment using PainVision enables multifaceted assessment of pain:
Pain rating scales
Visual Analog Scale : VAS
Numerical Rating Scale : NRS
Verbal Rating Scale : VRS
Face Rating Scale : FRS
Pain rating scales including behavioral aspect
Prince Henry Pain Scale : PRS
Children’s Hospital Estarn Ontario Pain Scale : CHEOPS
Assessment of pain quality, behavior and QOL
McGill Pain Questionnaire : MPQ
SF-36 (Medical Outcome Study Short-Form 36-Item Health Survery)
PDAS (Pain Disability Assessment Scale)
Although it is difficult to quantify pain, it is possible to quantify the level or degree of pain.
(The information may be used for treatment or research)
Reference: Japan Medical Association Journal) 2009; 138(3): 572-573
PainVision ® PS-2100 quantifies the level of pain using electrical stimulation. Pain management can be made effective and simple during a diagnosis by incorporating “pain level”, displayed as an objective value, in combination with the visual analog scale, a subjective value reflecting psychological factors.
ArterioVisionは、測定で得られる指標を組み合わせることにより、確度の高い診断を可能にしています。
Quantification of post-operative pain can facilitate the best postoperative management plan (treatment plan) for patients and physicians. By establishing a postoperative management plan, physicians, hospitals and patients can obtain the following benefits:
By quantifying postoperative pain, a physician can reduce unnecessary pain management procedures on an affected area and establish an appropriate treatment plan from postoperative treatment to rehabilitation.
By establishing a postoperative treatment plan until rehabilitation, a hospital can secure profit from providing high-quality medical services.
By optimizing postoperative management, a patient can receive high-quality medical services, safe and secure treatment and postoperative procedures.
PainVision ® PS-2100 quantifies the level of pain using electrical stimulation. Pain management can be made effective and simple during a diagnosis by incorporating “pain level”, displayed as an objective value, in combination with the visual analog scale, a subjective value reflecting psychological factors.
Pain management
Clinical investigator
Stress management counselor
Physical/occupational/recreational therapist
Psychologist
PainVision provides various options for research.
For measurements of Current Perception Threshold in the mouth, PainVision provides specifically designed proprietary electrode and electrode cable.
Pain Measurement
CPT Measurement