GB596787A - Acoustic Stethoscope - Google Patents
Acoustic StethoscopeInfo
- Publication number
- GB596787A GB596787A GB1889444A GB1889444A GB596787A GB 596787 A GB596787 A GB 596787A GB 1889444 A GB1889444 A GB 1889444A GB 1889444 A GB1889444 A GB 1889444A GB 596787 A GB596787 A GB 596787A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- chambers
- holes
- frequencies
- oct
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Headphones And Earphones (AREA)
Abstract
596,787. Stethoscopes. RADIO CORPORATION OF AMERICA. Oct. 3, 1944, No. 18894. Convention date, Oct. 29, 1943. Addition to 568,128. [Class 81 (ii)] A stethoscope having the general construction disclosed in the parent Specifification is formed with an acoustical filter device whereby to prevent the energy of certain frequencies from reaching the earpieces. As shown a tube 16 is interposed between the tube 23 provided with a tapered bore leading from the bodycontacting member and the Y-connector 17 leading to the ear plugs, and is formed with two or more holes 30, 31 in its wall. Rotatably surrounding the holes is a tubular member 33 closed at each end and divided as by partition 35 to provide a number of chambers 34, 36 corresponding to the number of holes in tube 16. The inner walls of these chambers are apertured as at 37, 38 so that on rotation of the member 33, none, or any one or more, of the chambers 34, 36 are brought into communication with the interior of tube 16, thereby acting as Helmholtz resonators to reject or attenuate some frequencies or bands of frequencies being transmitted through tube 23. The member 33 may be releasably locked in any desired position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50821543 US2389868A (en) | 1943-10-29 | 1943-10-29 | Acoustic Stethoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB596787A true GB596787A (en) | 1948-01-21 |
Family
ID=10484202
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB523943A Expired GB568128A (en) | 1943-10-29 | 1943-04-01 | Acoustic Stethoscope |
| GB1889444A Expired GB596787A (en) | 1943-10-29 | 1944-10-03 | Acoustic Stethoscope |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB523943A Expired GB568128A (en) | 1943-10-29 | 1943-04-01 | Acoustic Stethoscope |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US2363686A (en) |
| BE (2) | BE474567A (en) |
| FR (2) | FR1018260A (en) |
| GB (2) | GB568128A (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2632521A (en) * | 1953-03-24 | Frequency selector | ||
| US3314499A (en) * | 1967-04-18 | Instrument for quantitating sound intensities | ||
| US2573438A (en) * | 1946-09-18 | 1951-10-30 | Rca Corp | Electroacoustic transducer set |
| GB732388A (en) * | 1951-12-12 | 1955-06-22 | Dictaphone Corp | Twin unit stethoscope headphones |
| BE518558A (en) * | 1952-03-20 | |||
| US2836255A (en) * | 1954-12-28 | 1958-05-27 | Reichardt | |
| DE1026480B (en) * | 1955-01-24 | 1958-03-20 | Dr Emmanuel Roy Bier | Breathing cannula with breath noise amplifier |
| US3294195A (en) * | 1965-01-25 | 1966-12-27 | Telex Corp | Compressional wave signaling apparatus |
| US3493075A (en) * | 1967-12-26 | 1970-02-03 | Us Navy | Single tubing stethoscope |
| US3690404A (en) * | 1971-07-30 | 1972-09-12 | Bio Data Inc | Selective frequency stethoscope structure |
| US4270627A (en) * | 1979-07-02 | 1981-06-02 | Hill Raymond R | Stethoscope with probe sound pick-up and resonant cavity amplification |
| US4246776A (en) * | 1979-09-25 | 1981-01-27 | Cornell Thompson | Leak scope for detecting leaks in plumbing equipment |
| US4387784A (en) * | 1981-10-06 | 1983-06-14 | Hill Raymond R | Stethoscope with improved resonant cavity amplification |
| US4763753A (en) * | 1984-07-05 | 1988-08-16 | Etymotic Research, Inc. | Insert earphones for audiometry |
| US4633971A (en) * | 1985-11-06 | 1987-01-06 | Minnesota Mining And Manufacturing Company | Stethoscope with high frequency filter |
| US5492129A (en) * | 1993-12-03 | 1996-02-20 | Greenberger; Hal | Noise-reducing stethoscope |
| US5530212A (en) * | 1995-05-12 | 1996-06-25 | Baffoni; Frank A. | Multiple phase stethoscope |
| US6119806A (en) * | 1997-06-24 | 2000-09-19 | Baffoni; Frank A. | Multiple phase acoustic systems |
| FR2823660A1 (en) * | 2001-04-18 | 2002-10-25 | Pneumopartners | Analysis system for respiratory sounds includes sampling and processing module producing sound parameters for comparison with database |
| US9404829B1 (en) * | 2013-10-02 | 2016-08-02 | Andrew Tien | Stethescope based leak detection apparatus with interchangeable heads |
| KR101637830B1 (en) * | 2015-04-30 | 2016-07-07 | 서울시립대학교 산학협력단 | Stethoscope using helmholtz resonance, method for controlling the same and method for manufacturing the same |
| WO2016186849A1 (en) | 2015-05-15 | 2016-11-24 | 3M Innovative Properties Company | Stethoscope |
| KR101697424B1 (en) * | 2015-06-02 | 2017-01-17 | 서울시립대학교 산학협력단 | Mobile terminal system connected to stethoscope using helmholtz resonance, method for controlling the same and method for manufacturing the same |
| USD814631S1 (en) | 2015-09-21 | 2018-04-03 | 3M Innovative Properties Company | Stethoscope with one-piece tubing, chest piece and diaphragm-rim |
| US20220061796A1 (en) * | 2020-09-01 | 2022-03-03 | Wichita State University | Disposable stethoscope |
-
1942
- 1942-04-01 US US43713942 patent/US2363686A/en not_active Expired - Lifetime
-
1943
- 1943-04-01 GB GB523943A patent/GB568128A/en not_active Expired
- 1943-10-29 US US50821543 patent/US2389868A/en not_active Expired - Lifetime
-
1944
- 1944-10-03 GB GB1889444A patent/GB596787A/en not_active Expired
-
1947
- 1947-07-17 BE BE474567A patent/BE474567A/fr unknown
- 1947-07-29 FR FR1018260D patent/FR1018260A/fr not_active Expired
- 1947-07-30 BE BE474930A patent/BE474930A/fr unknown
- 1947-07-30 FR FR989229D patent/FR989229A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE474930A (en) | 1947-08-30 |
| GB568128A (en) | 1945-03-20 |
| FR1018260A (en) | 1953-01-05 |
| US2389868A (en) | 1945-11-27 |
| BE474567A (en) | 1947-08-30 |
| US2363686A (en) | 1944-11-28 |
| FR989229A (en) | 1951-09-06 |
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