Patent US4467815A successfully refreshed from Google Patents.
US4467815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring conditional characteristics of a body part
Assignee: MEDICAL DESIGN LABORATORIES Inc
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Filing: 1982-09-09
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Granted: 1984-08-28
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Expires: 2002-09-09
Abstract
Abstract Apparatus for measuring the sensory condition of the skin. The apparatus includes means for repeatably projecting and retracting a pair of probes and for repeatably varying the separation between the probes so that the Von Frey and Weber two point discrimination tests may be performed objectively. The apparatus also includes means for measuring skin temperature and electrical resistance with a unitary wand and for measuring the pinch and grip forces which may be applied by the fingers and hand.
Inventors
- 👤 William J. O'Brien
- 👤 James N. Ciraulo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:53
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/01; A; A61; A61B; A61B5/00; A61B5/05; A61B5/053; A61B5/0531; A61B5/22; A61B5/224; A61B5/225; A61B5/48; A61B5/4824; A61B5/4827; A61B2560/00; A61B2560/04; A61B2560/0462; A61B2560/0468
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
Apparatus for measuring the sensory condition of the skin, said apparatus comprising: a housing including a surface for contacting the skin, said surface including an aperture, two needlelike probes having radiused ends simultaneously projectable through said aperture for contacting and applying pressure to the skin, platform means disposed within said housing, carrying said probes and including a threaded hole, for advancing and retracting said probes simultaneously relative to said surface, said probe means including probe displacement means for adjusting the separation between probes and, bolt means rotatably mounted to said housing and engaging said threaded hole for advancing and retracting said platform means in response to rotation of said bolt means.
Claim 2
Dependent Claim
111 words
Apparatus for measuring the sensory condition of the skin, said apparatus comprising: a housing including a surface for contacting the skin, said surface including an aperture, two needlelike probes having radiused ends simultaneously projectable through said aperture for contacting and applying pressure to the skin, platform means disposed within said housing, carrying said probes and including a threaded hole, for advancing and retracting said probes simultaneously relative to said surface, said probe means including probe displacement means for adjusting the separation between probes and, bolt means rotatably mounted to said housing and engaging said threaded hole for advancing and retracting said platform means in response to rotation of said bolt means.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein said bolt means comprises first detent means for incrementally advancing and retracting said platform means.
Claim 4
Dependent Claim
51 words
The apparatus of claim 2 wherein said bolt means comprises a bolt and a knob mounted on said bolt, and said first detent means comprises a plurality of radial notches in said knob and a pawl mounted to said housing and biased to engage a said notch opposed to said pawl.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1, said platform means including first and second probe supports, wherein one of said probes is mounted on each of said first and second probe supports, and said second probe support is slidably mounted relative to said first probe support to adjust the separation between said probes.
Claim 6
Dependent Claim
23 words
The apparatus of claim 4 wherein said probe displacement means further comprises second detent means for incrementally adjusting the separation between said probes.
Claim 7
Dependent Claim
62 words
The apparatus of claim 5 wherein said second detent means further comprises a plurality of grooves in one of said probe supports disposed transversely to the direction of sliding of said second probe support relative to said first probe support, and a pawl mounted on the other of said probe supports and biased to engage a said groove opposed to said pawl.
Claim 8
Dependent Claim
25 words
The apparatus of claim 1 wherein said surface is transparent and said housing includes a mirror visible through said surface for observing said probe means.
Claim 9
Dependent Claim
44 words
The apparatus of claim 4 wherein said first probe support comprises a cradle having a base from which extend two opposing legs, at least one rod joined to each of said opposing legs and said second probe support is slidably mounted on said rod.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |