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1

Sterilisation of nanobubble dispersions

Ulatowski Karol, Fiuk Julia, Sobieszuk Paweł

Chemical and Process Engineering

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2020

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Vol. 41, nr 1

69–-76

EN

In this paper, three methods of sterilisation are compared to determine their usability in nanobubbledispersion sterilisation: filtration, thermal sterilisation and sonication (in twosystems: using a sonotrodeand sonication bath). Nanobubble dispersions are most commonly generated in non-sterile systemswhich precludes them from use in most biological research. As a result of this study, filtration waschosen as the best method for nanobubble sterilisation.

2

Impact of Sterilisation and Strain Hardening in Drawing Process on Resistance to Electrochemical Corrosion of Wires Intended in Cardiology

Przondziono J., Hadasik E., Walke W., Mendala J.

Archives of Metallurgy and Materials

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2016

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Vol. 61, iss. 1

249--252

EN

The study presents results of tests of impact of work hardening in cold drawing process, surface treatment and sterilisation on resistance to electrochemical corrosion of wires made of stainless steel X2CrNiMo 17-12-2 intended for cardiology. Potentiodynamic tests were performed on the ground of registered anodic polarisation curves in artificial plasma solution. Static uniaxial tension test made the ground for determination of strength characteristics of wires and the flow curve. Functions presenting the change of polarisation resistance according to strain applied in drawing process were selected. Test results show deterioration of corrosion properties of wires with work hardening. Surface modification of passivated surface caused increase of resistance of stainless steel wires to electrochemical corrosion, whereas sterilisation with pressurised water steam deteriorated that resistance.

3

New egzoluminal circular surgical stapler

Drop R., Mazurkiewicz S., Woźny Z., Majcher P., Tabor A.

Acta of Bioengineering and Biomechanics

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2010

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Vol. 12, no. 3

113-117

EN

The study presents the design, prototype version and preliminary results of in vivo testing of the egzoluminal circular surgical stapler for “end-to-end” anastomosis of bowels after the resection, where staples are put outside the intestinal lumen, and walls of the intestinal tube directly contact the intestinal mucous membrane. The adopted idea of an “end-to-end” intestinal anastomosis as well as a strong need for a device that would be re-usable have determined its specific design. The device is characterised by a kinematic mode of operation, different from the operating mode of commonly used staplers, and hence by a specific combination of the individual components. The in vivo tests, successfully conducted on animals, have proved that this method of anastomosis as well as the device used for its practical performance are fully applicable in clinical practice, as best shown by patent application No. P 386369.

4

Effect of low doses of gamma radiation on the mortality, morphology and pa-thogenicity of Heterorhabditis megidis (Poinar, Jackson, Klein 1987)

Poleszczuk O., Pezowicz E., Kamionek M., Jarmuł J.

Chemia i Inżynieria Ekologiczna

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2006

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Vol. 13, nr 1-2

99-103

EN

The effect of low doses of ionizing radiation on the development, morphometry and pathogenicity of H. megidis was studied. Gamma rays i.e. electromagnetic wave emitted by nuclei of excited radioactive atoms of 60Co were used in experiments. The increase of radiation doses was found to decrease body length of adult individuals but did not affect the dimensions of invasive larvae. The lowest of applied doses increased twice the intensity of infection of insects. 0.01 kGy was the dose that did not result in nematode sterilisation.

PL

Przeprowadzono badania nad wplywem małych dawek promieniowania jonizującego na rozwój, morfometrię i patogenność H. megidis. W doświadczeniach wykorzystano promienie gamma, czyli falę elektromagnetyczną, emitowaną przez jądra wzbudzonych atomów promieniotwórczych - 60Co. Stwierdzono, że wzrost dawki promieniowania wpływa na obniżenie długości ciała osobników dorosłych, natomiast nie wpływa na wymiary larw inwazyjnych. Najmniejsza z zastosowanych dawek dwukrotnie zwiększała intensywność porażenia owadów. Dawką, która nie powoduje sterylizacji nicieni jest 0,01 kGy.

5

Wpływ sterylizacji na niszczenie powierzchni instrumentarium chirurgicznego

Jałbrzykowski M.

Zeszyty Naukowe Politechniki Białostockiej. Budowa i Eksploatacja Maszyn

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2002

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Z. 10

51-60

PL

W pracy przedstawiono wyniki badania zmiany stanu warstwy wierzchniej (WW) instrumentarium chirurgicznego w procesie sterylizacji. Do przeprowadzenia procesu sterylizacji wykorzystano pionowy sterylizator parowy typu ASV. Badaniu poddano narzędzia z WW uzyskaną w procesie wytwarzania i po obróbce wykańczającej. Stwierdzono zmiany parametrów WW między innymi: chropowatości i mikro-twardości, po kolejnych procesach sterylizacji. Zaobserwowano przebarwienia korozyjne na powierzchni narzędzi, szczególnie w przypadku instrumentów z nieobrobioną warstwą wierzchnią.

EN

This paper prestents the results of investigations of change of the top layer (TL) of the surgical instrumentations in process of sterilisation. To execution of process of sterilisation the steriliser of type ASV was used. The tools with TL in process of production and after finish processing were examined. Change of parameters of the TL among others such as: roughness and microhardness, after next processes of sterilisation were detected. Corrosive discoulouring was observed on surface of the tools, particularly in the case of instruments with unfinished top layer.