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bowmeter pulse measuring device

https://mhc.andornot.com/en/permalink/artifact11140
Dates
1955
1965
1955-1965
Collection
Dr. Hans Westenberg Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
005007001
Description
A glass bowmeter (pulse measuring device); the device is a curved tube, sealed at each end; the tube is filled with an amber coloured liquid with a bubble in it; along the tube are a series of black and red dots (one red, four black, one red, four black, one red); there is a string tied on to the d…
  2 images  
Accession Number
005007001
Collection
Dr. Hans Westenberg Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
A glass bowmeter (pulse measuring device); the device is a curved tube, sealed at each end; the tube is filled with an amber coloured liquid with a bubble in it; along the tube are a series of black and red dots (one red, four black, one red, four black, one red); there is a string tied on to the device.
Number Of Parts
1
Provenance
The donor first used this device during his medical studies at the University of Amsterdam (Universiteit van Amsterdam) in the late 1950s where Prof. J. G. G. Borst was faculty chairman; the donor believes everyone who wished to gradate used one and every clinical clerk, intern, and resident would carry one of these in their pocket with the string tied to a button on their jacket; Dr. Westenberg brought this instrument with him when he came to Canada in 1961 and used it for a while, although he believes this measure may not have been widely used beyond Prof. Borst and his students in Amsterdam.
Maker
Probably custom made at the University of Amsterdam.
Site Made (City)
Amsterdam
Site Made (Country)
Netherlands
Dates
1955
1965
1955-1965
Date Remarks
The donor says these devices were used in the late 1950s, and he brought this one to Canada in 1961 and used it a few years later.
Material
glass: clear
liquid: amber
fabric: beige
Inscriptions
"WESTENBURG" hand printed on a piece of tape on the device
Permanent Location
Storage Room 0010
0010-E6-7
Dimension Notes
Length 14.2 cm x Diam 1.0 cm
Condition Remarks
Some minor surface wear; the piece of tape is deteriorated.
Copy Type
Original
Reference Types
Person
Reference Comments
Dr. Hans Westenburg
Research Facts
The donor believes that Prof. J. G. G.Borst (best known for his low protein diet for people in acute renal failure) had these objects made up by one of his technicians; this devices was used to measure the height of a patient's jugular venous pressure; before the development of diuretics in the mid-1960s for patients suffering from renal failure, this instrument was a method of determining whether congestive heart failure was improving or deteriorating - an elevated jugular vein pulse could indicate a backup in the right atrium of the heart; one end was placed on the patient's sternal notch, about 5.0 cm above the right atrium in a person lying down - the other end would be placed on the highest point of the jugular vein in the anterior neck.
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Dudgeon's sphygmograph

https://mhc.andornot.com/en/permalink/artifact6724
Dates
1860
1900
circa 1860-1900
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1975.2.2
Description
Sphygmograph has a cloth band, a metal box, and a dial; a toggle switch protrudes from the top of the box; a knob at the back right-hand side has an ivory (?) inlay.
  1 image  
Accession Number
1975.2.2
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
Sphygmograph has a cloth band, a metal box, and a dial; a toggle switch protrudes from the top of the box; a knob at the back right-hand side has an ivory (?) inlay.
Number Of Parts
1
Provenance
Acquired from the Academy of Medicine; source: estate of Mr. Campbell R. M. Cowan of Islington, Ont.
Maker
C. C. & S.
Site Made (Country)
United States of America
Dates
1860
1900
circa 1860-1900
Material
fabric: black
metal: silver
ivory (?): cream
Inscriptions
On ivory-inlaid knob: "Troy"; inscribed on inside of top portion is "1670"; just below that is: "C. C. & S."; dial has calibrations.
Permanent Location
Storage Room 0010
0010-E6-7
Dimension Notes
Length 5.7 cm x Width 4.4 cm x Depth 7.1 cm
Condition Remarks
Not fully operative
Copy Type
Original
Reference Comments
http://broughttolife.sciencemuseum.org.uk/broughttolife/objects/display?id=92214
Research Facts
Blood pressure is measured and recorded using a sphygmograph. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was designed by Étienne-Jules Marey (1830-1904) in 1863. This example belonged to Dr Robert Ellis Dudgeon (1820-1904). He was a prominent figure in homeopathy. Dudgeon also made his own changes to Marey’s original design. It was made by instrument maker J. Gauter in 1876. In the late 1800s, physiology teachers used sphygmographs to visually demonstrate blood pressure. Instruments such as this were also valuable diagnostic aids. They were the predecessor of the modern arm cuffs physicians now use to measure blood pressure.
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Dudgeon's sphygmograph

https://mhc.andornot.com/en/permalink/artifact5818
Dates
1860
1900
circa 1860-1900
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1969.214.1
Description
Metal box-like instrument for recording pulse.
  1 image  
Accession Number
1969.214.1
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
Metal box-like instrument for recording pulse.
Number Of Parts
1
Provenance
Acquired from the Academy of Medicine; source unknown.
Dates
1860
1900
circa 1860-1900
Material
metal: grey
Permanent Location
Storage Room 0010
0010-E6-7
Dimension Notes
Length 5.5 cm x Width 3.7 cm x Depth 6.3 cm
Condition Remarks
Wrist strap is missing
Copy Type
Original
Reference Comments
http://broughttolife.sciencemuseum.org.uk/broughttolife/objects/display?id=92214
Research Facts
Blood pressure is measured and recorded using a sphygmograph. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was designed by Étienne-Jules Marey (1830-1904) in 1863. This example belonged to Dr Robert Ellis Dudgeon (1820-1904). He was a prominent figure in homeopathy. Dudgeon also made his own changes to Marey’s original design. It was made by instrument maker J. Gauter in 1876. In the late 1800s, physiology teachers used sphygmographs to visually demonstrate blood pressure. Instruments such as this were also valuable diagnostic aids. They were the predecessor of the modern arm cuffs physicians now use to measure blood pressure.
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Dudgeon's sphygmograph

https://mhc.andornot.com/en/permalink/artifact6181
Dates
1860
1900
circa 1860-1900
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1969.510.1 a-b
Description
Sphygmograph contained in a rectangular box lined with velvet; the interior of the lid has material covering the underside.
  1 image  
Accession Number
1969.510.1 a-b
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
Sphygmograph contained in a rectangular box lined with velvet; the interior of the lid has material covering the underside.
Number Of Parts
2
Part Names
a - sphygmograph - Size: Length 5.8 cm x Width 3.8 cm x Depth 5.7 cm
b - case - Size: Length 7.6 cm x Width 7.0 cm x Depth 4.6 cm
Provenance
Acquired from the Academy of Medicine; source: Dr. E.J. Noble via Dr. W.B. Spaulding.
Dates
1860
1900
circa 1860-1900
Material
wood: brown
metal: silver
fabric: royal blue
Inscriptions
On one of the sphygmograph knobs: "TROY"
Permanent Location
Storage Room 0010
0010-E6-7
Copy Type
Original
Reference Comments
http://broughttolife.sciencemuseum.org.uk/broughttolife/objects/display?id=92214
Research Facts
Blood pressure is measured and recorded using a sphygmograph. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was designed by Étienne-Jules Marey (1830-1904) in 1863. This example belonged to Dr Robert Ellis Dudgeon (1820-1904). He was a prominent figure in homeopathy. Dudgeon also made his own changes to Marey’s original design. It was made by instrument maker J. Gauter in 1876. In the late 1800s, physiology teachers used sphygmographs to visually demonstrate blood pressure. Instruments such as this were also valuable diagnostic aids. They were the predecessor of the modern arm cuffs physicians now use to measure blood pressure.
Similar to the one used by Sir James Mackenzie in his classic investigations."
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Dudgeon's sphygmograph

https://mhc.andornot.com/en/permalink/artifact8231
Dates
1860
1900
circa 1860-1900
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Military Medicine
Classification
Cardiology
Military Medicine
Accession Number
1982.5.11
Description
A sphygmograph in a leather box lined with velvet and silk; arrow on box lid indicates British military supplies; the numbers 1929 could be the supply order number and not the date.
  1 image  
Accession Number
1982.5.11
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Military Medicine
Classification
Cardiology
Military Medicine
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Military Medicine
Military Medicine -- British
Military Medicine -- War
Description
A sphygmograph in a leather box lined with velvet and silk; arrow on box lid indicates British military supplies; the numbers 1929 could be the supply order number and not the date.
Number Of Parts
2
Part Names
box - Size: Length 8.0 cm x Width 7.0 cm x Depth 5.0 cm
Provenance
Acquired from the Academy of Medicine; source: Dr. J. W. Scott.
Maker
E. Hymans, Surgical Instrument Manufacturers
Site Made (City)
London
Site Made (Country)
England
Dates
1860
1900
circa 1860-1900
Material
metal: silver
leather: black
fabric: blue
paint: yellow
Inscriptions
Marked in gold on lid: "19 [upward arrow] 29"
Permanent Location
Storage Room 0010
0010-E6-7
Condition Remarks
Box has many wormholes
Copy Type
Original
Reference Comments
http://broughttolife.sciencemuseum.org.uk/broughttolife/objects/display?id=92214
Research Facts
Blood pressure is measured and recorded using a sphygmograph. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was designed by Étienne-Jules Marey (1830-1904) in 1863. This example belonged to Dr Robert Ellis Dudgeon (1820-1904). He was a prominent figure in homeopathy. Dudgeon also made his own changes to Marey’s original design. It was made by instrument maker J. Gauter in 1876. In the late 1800s, physiology teachers used sphygmographs to visually demonstrate blood pressure. Instruments such as this were also valuable diagnostic aids. They were the predecessor of the modern arm cuffs physicians now use to measure blood pressure.
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Lydia E. Pinkham's Sanative Wash

https://mhc.andornot.com/en/permalink/artifact14165
Dates
1888
1915
circa 1888-1915
Collection
Parks Canada Agency Pharmacy Collection
Category
Diagnostic & Treatment Artifacts
Classification
Gynaecology
Accession Number
014002035 a-c
Description
Cylindrical transparent glass bottle (a) tapered at neck with tan cork closure stuck in neck full of opaque brown liquid; tan paper label wraps around bottle; label has manufacturer's name, address, proprietary legal information, a price, directions for use, and a sketched portrait of the manufactu…
  4 images  
Accession Number
014002035 a-c
Collection
Parks Canada Agency Pharmacy Collection
Category
Diagnostic & Treatment Artifacts
Classification
Gynaecology
MeSH Heading
Administration, Intravaginal
Feminine Hygiene Products
MM= Irrigation -- irrigator -- vaginal
Description
Cylindrical transparent glass bottle (a) tapered at neck with tan cork closure stuck in neck full of opaque brown liquid; tan paper label wraps around bottle; label has manufacturer's name, address, proprietary legal information, a price, directions for use, and a sketched portrait of the manufacturer's head and shoulders with her signature and logo: product used as a douche or vaginal cleaner; one piece tan rectangular cardboard box (b); one piece folded tan paper leaflet (c) printed both sides with product information.
Number Of Parts
3
Part Names
a - bottle - Size: Length 9.1 cm x Diam. 3.6 cm
b – box - Size: Length 10.4 cm x Width 4 cm x Depth 4 cm
c – leaflet - Size: Length 16.0 cm x 10.1 cm
Provenance
Transferred from the Parks Canada Agency, via Gail Cariou of the Curatorial and Collections Branch.
Maker
Lydia E. Pinkham Medicine Company
Site Made (City)
Montreal
Site Made (State)
Quebec
Site Made (Country)
Canada
Dates
1888
1915
circa 1888-1915
Date Remarks
Provided by donor
Material
glass: transparent
paper: tan
ink: black
cork: tan
Inscriptions
Printed on bottle label: "For Vaginal Injections, // (Liquid Form). // PRICE, 25 c PER BOTTLE. // The Proprietary of Patent Medicine Act. // (No. 57.) // Yours for Health // Dissolve one teaspoonful of the wash // in one pint of warm water and use once // a day, as a VAGINAL INJECTION OR // DOUCHE. In severe cases two tea- // spoonfuls may be used instead of one." printed on box: "LYDIA E. PINKHAM’S // SANATIVE // WASH // (LIQUID FORM) // PREPARED BY LYDIA E. PINKHAM // MEDICINE COMPANY // MONTREAL P. Q. // FULL DIRECTIONS INSIDE // SOLD BY DRUGGISTS // The Proprietary or Patent Medicine Act. No. 57”; printed on the leaflet: "FOR LEUCORRHOEA // Lydia E. Pinkham’s Sanative Wash // LIQUID FORM // This valuable article has been on the market for the // last thirty years, and has been used quite extensively with // very beneficial results. The only objections to it has been // its form – it has always been put up as a dry herb-packet // which required steeping and straining before it could be // used. If any prefer this form, either because they // have become used to it or for any other reason, they can // still obtain it in the old style. // Apply once a day as a vaginal injection // (or douche) by means of any good fountain syringe. It // is best first to take a cleansing douche. // For this purpose // use warm water in which has been dissolved powdered // borax (one heaping teaspoonful to a quart of water), or //as much castile soap as you would use in washing, or // ”Paxtine” according to the directions on the package. // The Sanative Wash is useful not only in cases of grave // ailments, but is of great value to check slight disturbances // of the secretions, to which nearly all women are liable // at one time or another. // The discharge from the nose caused // by a cold in the head is familiar to all. it results from an // inflammation of the mucous membrane. But the mucous // membrane exists in other parts of the body, particularly // those to which the Sanative Wash is especially intended to // be applied, and is there liable to a similar affection by which // a similar discharge is occasioned. Whenever this appears, // it should at once be checked and prevented by the use of // the Sanative Wash. Just as a neglected cold in the head be- // comes chronic, taking the form of catarrh, so does this dis- // charge, which is known as Leuccorhoea, or more popularly // "the Whites." // There should be no delay in treating this discharge, as // besides uncleanness and discomfort the irritation caused by // it may bring about ulcerations and other serious conditions. // price, twenty-five cents per bottle. // LYDIA E. PINKHAM MEDICINE COMPANY. // LYNN, MASS."
Permanent Location
Storage Room 0010
0010-A3-9 Box 2
Condition Remarks
Paper has yellowed, shows minor wear and minor tears along edges of bottle label; cork is stained with a minor crack running through its middle and a dark brown stain on one side; box is fade, shows minor wear, surface grime, minor stains
Copy Type
Original
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Richardson's sphygmograph

https://mhc.andornot.com/en/permalink/artifact7687
Dates
1880
1900
circa 1880-1900
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1979.9.2
Description
Sphygmograph has a square base with a motor attached; motor is operated by a hand lever; apparatus juts out above motor with a needle to make graphs when measuring pulse rate; cloth straps are attached, which are tied around the wrist; a rod marked off and numbered from 1 to 6 is on top of the need…
  1 image  
Accession Number
1979.9.2
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
Sphygmograph has a square base with a motor attached; motor is operated by a hand lever; apparatus juts out above motor with a needle to make graphs when measuring pulse rate; cloth straps are attached, which are tied around the wrist; a rod marked off and numbered from 1 to 6 is on top of the needle and a metal block is at the top of the rod; there is a screw at bottom of base for winding the apparatus.
Number Of Parts
1
Provenance
Acquired from the Academy of Medicine; source: Dept. of Physiology, University of Toronto, via Dr. W. J. Scott.
Maker
S. Manson and Thompson
Site Made (City)
London
Site Made (Country)
England
Dates
1880
1900
circa 1880-1900
Material
metal: grey
fabric: black
Permanent Location
Storage Room 0010
0010-E6-7
Dimension Notes
Length 11.0 cm x Width 5.5 cm
Condition Remarks
In working order; somewhat worn, particularly the straps; motor runs.
Copy Type
Original
Reference Types
Book
Reference Comments
Arnold & Sons Catalogue, 1895, p. 314
http://broughttolife.sciencemuseum.org.uk/broughttolife/objects/display?id=92214
Research Facts
Apparatus has a device for regulating tension; a weight is moved along a bar as in a metronome; tension device introduced by B. W. Richardson.
Blood pressure is measured and recorded using a sphygmograph. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was designed by Étienne-Jules Marey (1830-1904) in 1863. This example belonged to Dr Robert Ellis Dudgeon (1820-1904). He was a prominent figure in homeopathy. Dudgeon also made his own changes to Marey’s original design. It was made by instrument maker J. Gauter in 1876. In the late 1800s, physiology teachers used sphygmographs to visually demonstrate blood pressure. Instruments such as this were also valuable diagnostic aids. They were the predecessor of the modern arm cuffs physicians now use to measure blood pressure.
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sphygmograph case

https://mhc.andornot.com/en/permalink/artifact5949
Dates
1930
1939
circa 1930-1939
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1969.3.43 a-h
Description
Wooden case (h) containing a set of tambours for recording pulses; (a) is a writing lever and holds tambour; (b-d) are metal tambours that are cup-shaped and have handles; (e-g) are black plastic pistons that fit in the drums of the tambours; a hook extends outward and attaches to the writing rod; …
  1 image  
Accession Number
1969.3.43 a-h
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
Wooden case (h) containing a set of tambours for recording pulses; (a) is a writing lever and holds tambour; (b-d) are metal tambours that are cup-shaped and have handles; (e-g) are black plastic pistons that fit in the drums of the tambours; a hook extends outward and attaches to the writing rod; there are also two wooden writing rods that are too small to be labelled.
Number Of Parts
8
Part Names
a - writing lever - Size: Length 9.0 cm
b - tambour - Size: Length 9.6 cm x Diam. 3.0 cm
c - tambour - Size: Length 9.6 cm x Diam. 2.5 cm
d - tambour - Size: Length 9.6 cm x Diam. 2.0 cm
e - piston - Size: Diam. 3.0 cm
f - piston - Size: Diam. 2.5 cm
g - piston - Size: Diam. 2.0 cm
h - case - Size: Length 22.0 cm x Width 10.0 cm x Depth 5.0 cm
Provenance
Acquired from the Academy of Medicine; source: Dept. of Physiology, University of Toronto, via Dr. John W. Scott.
Maker
Eügen Albrecht
Site Made (City)
Tübingen
Site Made (Country)
Germany
Dates
1930
1939
circa 1930-1939
Date Remarks
Date is uncertain
Material
wood: brown
metal: silver
plastic: black
Inscriptions
"6" inscribed on all parts of (a)
Permanent Location
Storage Room 0010
0010-E6-7
Condition Remarks
Case badly warped; writing rods bent or broken.
Copy Type
Original
Research Facts
A tambour is a drum-like instrument used in physiologic experiments.
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sphygmograph receptor

https://mhc.andornot.com/en/permalink/artifact8247
Dates
1900
1920
circa 1900-1920
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1982.5.7
Description
A metal instrument resembling a 4-legged spider, with a short shaft extending from the "body" down to a saucer-shaped piece of metal; a large set screw comes out from the "body" at a right angle.
  1 image  
Accession Number
1982.5.7
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
A metal instrument resembling a 4-legged spider, with a short shaft extending from the "body" down to a saucer-shaped piece of metal; a large set screw comes out from the "body" at a right angle.
Number Of Parts
1
Provenance
Acquired from the Academy of Medicine; source: Dr. J. W. Scott.
Dates
1900
1920
circa 1900-1920
Material
metal: grey
Permanent Location
Storage Room 0010
0010-E6-7
Dimension Notes
Diam. 6.0 cm
Condition Remarks
Rubber diaphragm missing.
Copy Type
Original
Research Facts
When placed over the heart or a vein, the instruments registers pulsation.
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Sphygmograph recording paper

https://mhc.andornot.com/en/permalink/artifact6901
Dates
1870
1900
circa 1870-1900
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
Accession Number
1976.5.5
Description
A cylindrical cardboard box with a lid containing a roll of recording paper.
  1 image  
Accession Number
1976.5.5
Collection
University Health Network - Academy of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Cardiology
MeSH Heading
Physical Examination
Cardiology -- instrumentation
MM= Pulse -- sphygmograph
Description
A cylindrical cardboard box with a lid containing a roll of recording paper.
Number Of Parts
1
Provenance
Acquired from the Academy of Medicine; source: Mr. Austin, administrator, Dept. of Pathology, Banting Institute; belonged to Dr. O. Klotz, chairman of the pathology labs at Banting Institute during the 1930s.
Maker
A. G. James Jaquet
Site Made (City)
Basel
Site Made (Country)
Switzerland
Dates
1870
1900
circa 1870-1900
Material
paper: white
cardboard: brown
Inscriptions
On top of box lid: "Fabrik für wissenshaftliche chronometrie // A.G. James Jaquet // Basel (Schweiz) // Sphygmotonographe, Sphygmocardiographe, // Sphygmochronographe, // Graphische Chronometer, // Chronoscope. // etc. // und Präzisionsmechanik"; translated: "Scientific chronometry factory A.G. James Jaquet Basel (Schweiz) Sphygmotonographe, Sphygmocardiographe, Sphygmochronographe, Graphical chronometer, chronoscope, etc. and precision mechanics"
Permanent Location
Storage Room 0010
0010-E6-7
Dimension Notes
Length 7.4 cm x Diam. 10.8 cm
Copy Type
Original
Reference Comments
http://broughttolife.sciencemuseum.org.uk/broughttolife/objects/display?id=92214
Research Facts
Blood pressure is measured and recorded using a sphygmograph. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was designed by Étienne-Jules Marey (1830-1904) in 1863. This example belonged to Dr Robert Ellis Dudgeon (1820-1904). He was a prominent figure in homeopathy. Dudgeon also made his own changes to Marey’s original design. It was made by instrument maker J. Gauter in 1876. In the late 1800s, physiology teachers used sphygmographs to visually demonstrate blood pressure. Instruments such as this were also valuable diagnostic aids. They were the predecessor of the modern arm cuffs physicians now use to measure blood pressure.
Images
Less detail

13 records – page 1 of 2.