When Hewitt introduced his regulating stopcock in 1887, attempts were made to dilute the nitrous oxide with air and so obviate the element of asphyxiation. The method was to be seen in London, mainly in dentistry and minor surgery, so late as 1930. It was not very successful. To give even 10% of oxygen (which is not enough) the gas-mixture must contain 55% of air and 45% of nitrous oxide. The latter is thus so diluted by atmospheric nitrogen as to be incapable of producing anaesthesia except by asphyxiation. "Gas-air" was confined to analgesia, for example in midwifery. (Source: Penn catalogue)Brown leather facemask attached to metal inhaler and stopcock device that has been sectioned to reveal its inner workings. The various exposed channels have been painted either green, red, blue or purple.Engraved into side of stopcock: HEWITT'S / N20-02 / 1895 / G. Kaye sect. 1952. •Stamped into other side of stopcock: [indecipherable] BARTH & CO. / SOLE MAKERS / 54. POLAND STREET LONDON.W.frederic hewitt, stopcock, nitrous oxide, oxygen, gas-air

Sir Frederick William Hewitt was a great advocate of nitrous oxide anaesthesia, mainly for short procedures. In 1885, he reviewed the methods of administration and concluded that accurately fitting valves were essential at the commencement of the inhalation, in order to ensure the rapid washout of air from the lungs; and there was a distinct advantage in allowing some rebreathing of nitrous oxide towards the end of inhalation. He thus devised the stopcock. The stopcock consists of a cylinder with two rotating sleeves and two rubber flap valves. The arrangement allows air to be breathed either through the valves or rebreathed to and from the bag; nitrous oxide to be breathed either through the valves from the bag and out to the atmosphere or rebreathed to and from the bag. Soon after the introduction of this stopcock, there was an increased interest in administering oxygen in combination with nitrous oxide.Amber coloured ether inhaler, with leather mask, celluloid shield and inflatable cushion with attached Hewitt's stopcock.hewitt, stopcock, celluloid, ether, inhaler, mask, rebreathing

Item originally belonged to Professor Bruce Mayes, University of Sydney c1950-65. According to Professor Warren Jones the item had been in a back room of the medical facility and Professor Mayes gave it to Warren Jones, otherwise it may have been thrown out. Warren Jones took it with him to Adelaide where he practiced from 1975.Uterine flushing tube. Consists of dilating, double arms with screw mechanism to widen arms. Stopcock at base, stamped "25" on stem near stopcock.obstetric delivery

Artefact may have been used for enema or vaginal irrigation. Mary Howlett (1840-1922) began practising as a country midwife in 1866 in the western district of Victoria. She qualified as a 'ladies monthly nurse' in 1887 and continued to practise as a nurse and midwife until 1920.She began her six months training at the Melbourne Lying-In Hospital. She was known by many as 'Auntie', and her career spanned more than 50 years. Mrs Howlett's midwifery box and contents were given to Dr Frank Forster, and he donated them to the museum collection in 1993.Black bakelite irrigator, resembling a test tube in shape. The irrigator has four entries, a connecting bridge and serrated edged flange. Stopcock attachment and tubing are missing.irrigation, midwifery

These are parts of a vaginal douch apparatus set. The apparatus appears to be a T More-Madden model, as used at the Rotunda Hospital, Ireland.Mary Howlett (1840-1922) began practising as a country midwife in 1866 in the western district of Victoria. She qualified as a 'ladies monthly nurse' in 1887 and continued to practise as a nurse and midwife until 1920.She began her six months training at the Melbourne Lying-In Hospital. She was known by many as 'Auntie', and her career spanned more than 50 years. Mrs Howlett's midwifery box and contents were given to Dr Frank Forster, and he donated them to the museum collection in 1993.Black vulcanite bridge attachment (.1) and irrigator (.2). The bridge would attach to the rubber tubing of the set and a lead sinker, The bridge would attach to a stopcock at the proximal end of the set.midwifery

The Bruck Inhaler is a modification of the Clover Inhaler, designed by Lambert Bruck. Bruck added a glass dome which enabled the level of ether to be monitored during administration. This was a revolutionary change as it removed guess work from the process.The inhaler is oval shaped with two halves. One half should be made of glass [missing] to allow observation of the ether level. A vertical cross tube, 22mm in diameter passes between the face-piece and the bag [broken]. There is a stopcock for admission of oxygen or nitrous oxide opposite the bag attachment. There is a central tube, 28mm in diameter, with controllable ports on either side.The Bruck Inhaler is a modification of the Clover Inhaler, designed by Ludwig Bruck. Bruck added a glass dome which enabled the level of ether to be monitored during administration. This was a revolutionary change as it removed guess work from the process.joseph clover, lambert bruck, inhaler, rebreather, nitrous oxide, oxygen, probyn williams, hewitt

The Bruck Inhaler is a modification of the Clover Inhaler, designed by Lambert Bruck. Bruck added a glass dome which enabled the level of ether to be monitored during administration. This was a revolutionary change as it removed guess work from the process.The Bruck Inhaler is a historically, aesthetically and scientifically significant piece. The basic design is based on the Clover Inhaler, but with a rounded bottom. The idea of a glass viewing window was possibly inspired by Wilson-Smith Inhaler. The Bruck Inhaler is historically significant as it is the first inhaler to be made with a completely clear lower glass section. This improved the usability for the ether administrator, and eliminated much of the guesswork associated with dosage and ether levels, which in turn improved the patient experience. This piece provides a strong local link to both anaesthetic and general medical practice at the turn of the century. The design is credited to Ludwig Bruck of Sydney, and was presumably manufactured in the same area. Bruck, as the attributed designer, holds much relevance to the significance of the object, as connected with him is much historical information about the social context of medical practice. Ludwig Bruck was a prominent figure in the medical industry. He started his medical career in Sydney as a Medical Transfer Agent, and later owned a shop at 16 Castlereagh Street, Sydney. This business is listed in the 1903 Register of Firms as a Medical Agent and Importer of Medical Instruments and Books. Bruck was vocal as a journalist and published analyses of medical statistics, as well as the well known Australasian Medical Dictionary and Handbook, which included the “List of Unregistered Medical Practitioners”. Ludwig Bruck was an immigrant. He was of German descent, which placed him in a precarious position within Sydney society during the turn of century. Bruck conducted several public conversations with prominent members of the Australian Natives Association through the Sunday News in regards to his disagreement of the employment of medical practitioners by the ANA specifically to corroborate their health insurance policies. He was also a stalwart supporter of the Australian arm of the British Medical Association, being the publisher of the first and subsequent editions of The Australian Medical Gazette. Bruck chose to end his life with a combination of poison and chloroform on 14 August 1915, after being accused of trading with the enemy during World War One. His suicide note stated his horror at leaving his business partner to deal with the tarring of his reputation as the reason for his decision. The Bruck Inhaler has aesthetic significance as it is a beautiful example of turn of the century surgical design and craftsmanship. Aseptic methods of surgery were well known by 1909, and the aesthetic design of the Bruck Inhaler conformed to these principles. The ability for the surgeon to unscrew, clean and sterilize each part of the Inhaler contributes to the streamlined design of the piece. The Buck Inhaler holds scientific significance. There is the capacity for further research to be undertaken on the object. Geoffrey Kaye often collected multiple examples of equipment, usually one for reverse engineering and another for teaching. There are currently two examples of the Bruck Inhaler in the collection, presenting an opportunity for further technical research on the object. The inhaler is oval shaped with one half made of glass to allow observation of the ether level. A vertical cross tube, 22mm in diameter passes between the face-piece and the bag [missing]. There is a stopcock for admission of oxygen or nitrous oxide opposite the bag attachment. There is a central tube, 28mm in diameter, with controllable ports on either side. There is also a tear-drop shaped fask mask.Hand engraved on side of base: L. Bruck / Sydneyclover, joseph, bruck, lambert, inhaler, rebreather, nitrous oxide, oxygen, williams, probyn

A Weller-Ash nitrous oxide apparatus that has been sectioned, complete with a brown fabric Cattlin's rebreather bag, stopcock, rubber tubing, and celluloid mask, on an iron stand that has been decorated with a natural, gold-coloured leaf motif. The base of the stand is black, and has a brown foot pedal which controlled gas flow to fill the bag. Much of the stand and the dials on either side are a brassy gold colour.nitrous oxide, rebreathing, anaesthesia, dentistry, surgery

stopcock with record connection

stopcock - 3 way luer lock

stopcock, 3 way with record connection

3 way stopcock & exploratory needle attached

record fitting 3 way stopcock