CURRENT PERCEPTION THRESHOLD EXAMINATION APPARATUS USED IN CATHETER FOR DIAGNOSIS OF INTERSTITIAL CYSTITIS

• US 20160228031A1
• Filed: 09/18/2013
• Published: 08/11/2016
• Est. Priority Date: 09/18/2013
• Status: Abandoned Application

• Current Assignee: Tsukada Medical Research Co., Ltd.
• Original Assignee: Tsukada Medical Research Co., Ltd.
• Inventors: NAKAJIMA, Yasuhiko, UEDA, Tomohiro, KUSANO, Kazutoshi, SHIMIZU, Masato, TSUKADA, Osamu
• Application Number:
  US15/022,727
• Publication Number:
  US 20160228031A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/0538 invasively, e.g. using a catheter
• CPC Class Codes: A61B 5/1104 induced by stimuli or drugs; A61B5/1102 takes precedence; investigating medicinal preparations G01N33/15
• CPC Class Codes: A61B 5/202 Assessing bladder functions, e.g. incontinence assessment
• CPC Class Codes: A61B 5/4041 Evaluating nerves condition
• CPC Class Codes: A61B 5/6853 with a balloon
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 5/7455 characterised by tactile indication, e.g. vibration or electrical stimulation

Abstract

A current perception threshold examination apparatus capable of realizing increased efficiency and reduction in a burden on an examinee is provided. In the current perception threshold examination apparatus that controls supply of a current from a power supply to electrodes of a catheter for diagnosis of interstitial cystitis, the current perception threshold examination apparatus has a direct current generating unit for generating a direct current on the basis of an instruction of a control unit, and a direct current resistance measuring unit that measures an electric resistance value of a diagnosis site on the basis of the direct current which is supplied to the electrodes.

Claims

1. A current perception threshold examination apparatus that controls supply of a current from a power supply to electrodes of a catheter for diagnosis of interstitial cystitis,

the current perception threshold examination apparatus comprising:

a direct current generating unit for generating a direct current on the basis of an instruction of a control unit; and

a direct current resistance measuring unit that measures an electric resistance value of a diagnosis site on the basis of the direct current which is supplied to the electrodes.

2. The current perception threshold examination apparatus according to claim 1, further comprising:

an alternating current generating unit for generating an alternating current to be supplied for diagnosis, on the basis of the electric resistance value which is measured.

3. The current perception threshold examination apparatus according to claim 2,

wherein the control unit determines an alternating-current voltage value suitable for diagnosis on the basis of the electric resistance value, and the alternating current generating unit applies the determined voltage to the electrodes in response to an instruction of the control unit.

4. The current perception threshold examination apparatus according to claim 3,

wherein the control unit has a frequency and current value regulating function of regulating a frequency and a current value.

5. The current perception threshold examination apparatus according to claim 4,

wherein the diagnosis of interstitial cystitis is divided into preliminary examination and regular diagnosis, and the control unit further has a resolution switching function of switching a resolution for a current value in the preliminary examination and the regular diagnosis.

6. The current perception threshold examination apparatus according to claim 5,

wherein a resolution in the regular diagnosis is higher than a resolution in the preliminary examination.

7. A diagnostic method for diagnosing interstitial cystitis by using the current perception threshold examination apparatus according to claim 4, and a catheter for diagnosis of interstitial cystitis that is connected to the current perception threshold examination apparatus, comprising:

supplying a direct current to a diagnosis site to measure an electric resistance value of the diagnosis site;

determining an alternating-current voltage value suitable for diagnosis on the basis of the measured electric resistance value; and

applying the determined alternating-current voltage to the electrodes, and regulating a current value and a frequency to diagnose interstitial cystitis on the basis of a current value and a frequency at a time of an examinee feeling a stimulus.

8. The diagnostic method for diagnosing interstitial cystitis according to claim 7,

wherein diagnosis of interstitial cystitis by an alternating current is divided into preliminary examination and regular diagnosis, and a resolution of current value regulation in the regular diagnosis is higher than a resolution in the preliminary examination.

9. A diagnostic method for diagnosing interstitial cystitis by using the current perception threshold examination apparatus according to claim 5, and a catheter for diagnosis of interstitial cystitis that is connected to the current perception threshold examination apparatus, comprising:

supplying a direct current to a diagnosis site to measure an electric resistance value of the diagnosis site;

determining an alternating-current voltage value suitable for diagnosis on the basis of the measured electric resistance value; and

applying the determined alternating-current voltage to the electrodes, and regulating a current value and a frequency to diagnose interstitial cystitis on the basis of a current value and a frequency at a time of an examinee feeling a stimulus.

10. A diagnostic method for diagnosing interstitial cystitis by using the current perception threshold examination apparatus according to claim 6, and a catheter for diagnosis of interstitial cystitis that is connected to the current perception threshold examination apparatus, comprising:

supplying a direct current to a diagnosis site to measure an electric resistance value of the diagnosis site;

determining an alternating-current voltage value suitable for diagnosis on the basis of the measured electric resistance value; and

applying the determined alternating-current voltage to the electrodes, and regulating a current value and a frequency to diagnose interstitial cystitis on the basis of a current value and a frequency at a time of an examinee feeling a stimulus.