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In 1920, the company Wilhelm Haselmeier GmbH & Co got its start in a small backyard workshop in Stuttgart-Degerloch. In 1925, the founder Wilhelm Haselmeier developed the Rotanda reusable syringe, which is still produced almost unchanged to this day.
Originally intended as a "three-way" syringe for blood transfusion, there was quickly a "two-way version", with the liquids out of the body - but could also be pumped into the body - a "German syringe to Dieulafoy" so to speak (see Chapter Surgery under aspiration syringes).
Presented is such a two-way version.
Otto A. JUENGLING (1884-1944) had studied in Tübingen and Kiel and had been an assistant at the Pathology Institute under Prof. Paul Clemens von BAUMGARTEN (1848-1928), later at the Surgical Clinic of Prof. PERTHES in Tübingen. Habilitation 1919, associate professor 1923. From 1926 head of the surgical department at the Municipal Katharinen Hospital in Stuttgart.
"When the Tübingen surgeon Otto JÜNGLING got to know the syringe design of the Stuttgart instrument maker Wilhelm Haselmeier in the 1920s, he was immediately enthusiastic: the often-used, cumbersome two-way or three-way stopcocks are now expendable, and their function is now taken over by the specially designed" head piece ". Depending on the position of the rotatable syringe body, it releases one of several ways, the selected setting marks an arrow on the glass cylinder.
JÜNGLING saw special advantages of the new syringe in blood transfusions: the procedure according to Franz Oehlecker (published in 1919), which was previously customary in Tübingen, could now be simplified. Jüngling was so convinced of the new method that he published it in the Zentralblatt für Chirurgie in 1925 and thus contributed to its dissemination. With his name, one then advertised for the new blood transfusion syringe, which she was "scientifically" upgraded.
For blood transfusions, a model with three pathways and mostly 50 or 100 ml capacity was used. Two of the connected tubes were fitted with glass cannulas sewn into the surgically opened veins of the donor and recipient (one of these tubes was removed from the device shown and placed in front of the device). An extension on the glass cannulas served the better surgical fixation of the cannulas. The third tube was weighed into a glass container filled with a sodium citrate solution. In the transfusion, the syringe was first flushed with the anticoagulant sodium citrate solution, then the syringe barrel was chosen to provide the pathway to the donor, blood drawn, and transferred to the recipient at the choice of the correct output. Now the system was rinsed again, then blood was taken from the donor and so on. The donor and the recipient were close together in this procedure.
In the older method Oehlecker was instead working with multiple syringes. After taking the blood, the collection syringe was carried to the recipient and transfused the blood. Subsequently, the syringe was rinsed by an assistant, while with a second syringe already withdrew blood. The cumbersome delivery, removal and insertion of the rinsed syringe, which was no longer necessary with the new ROTANDA syringe, required a "certain amount of practice", as JÜNGLING wrote, to prevent the ingress of air. Wilhelm Haselmeier had 1924 a patent registered for its construction, which was actually granted him by the German Reich Patent Office. Thus, his invention was patent protected, nothing more stood in the way of their economic use. With a little later granted additional patent, the syringe for blood transfusion purposes was improved again. In many modifications, ROTANDA syringes were produced well into the postwar period, including the ROTANDA blood transfusion apparatus with glass cannulas. At the time of the construction of the Rotanda syringe in the German Reich, therapeutic blood transfusion had once again entered a phase of economic growth after it had become quiet around it in the late 19th century, with almost saline solutions being used instead. The "rediscovery" of the blood transfusion had occurred in the German-speaking world around 1910, in connection with the organ transplantation experiments that fascinated many physicians - not only surgeons, but also internists "(quoted Bochum, https: //www.ruhr-uni -bochum.de/rubens/rubens103/9.htm.)
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