GB512609A - New or improved electric sensory testing or indicating appliance - Google Patents
New or improved electric sensory testing or indicating applianceInfo
- Publication number
- GB512609A GB512609A GB199838A GB199838A GB512609A GB 512609 A GB512609 A GB 512609A GB 199838 A GB199838 A GB 199838A GB 199838 A GB199838 A GB 199838A GB 512609 A GB512609 A GB 512609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tooth
- rheostat
- new
- patient
- anode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001953 sensory effect Effects 0.000 title abstract 3
- 230000035807 sensation Effects 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0534—Measuring electrical impedance or conductance of a portion of the body for testing vitality of teeth
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
512,609. Electric tests for sensory conditions. ROTHERAM, W. Jan. 21, 1938, No. 1998. [Class 81 (ii)] For ascertaining the sensory condition, e.g. of a tooth, one electrode i is held by the patient while another electrode h is formed as a brush of comparatively soft conducting wires h fused into a glass handle, so that when. applied to the tooth the mere physical contact thereof causes no sensation. The electrodes are connected in the anode circuit of a triode a the grid and anode circuits of which are inductively coupled at e to produce oscillations. The rheostat d is then operated to increase the filament and therefore the anode current until the patient is conscious of sensations in the tooth, this position of the rheostat indicating the degree of sensibility. The apparatus and necessary batteries b, c are preferably housed in a portable case. The apparatus may alternatively be worked off a mains supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB199838A GB512609A (en) | 1938-01-21 | 1938-01-21 | New or improved electric sensory testing or indicating appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB199838A GB512609A (en) | 1938-01-21 | 1938-01-21 | New or improved electric sensory testing or indicating appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB512609A true GB512609A (en) | 1939-09-21 |
Family
ID=9731806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB199838A Expired GB512609A (en) | 1938-01-21 | 1938-01-21 | New or improved electric sensory testing or indicating appliance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB512609A (en) |
-
1938
- 1938-01-21 GB GB199838A patent/GB512609A/en not_active Expired
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