Antibakteriyel ve Akustik Performanslı Kenevir Esaslı Stetoskop Diyafram Malzemesi Geliştirilmesi

Abstract

Bu çalışmada, stetoskop diyafram malzemesi olarak sentetik lifler yerine doğal ve sürdürülebilir bir alternatif olan kenevir kumaş bazlı kompozit malzemelerin kullanımı incelenmiştir. Diyaframlara antibakteriyel özellik kazandırmak amacıyla borik asit ve nano TiO₂ katkıları eklenmiş, antibakteriyel testler sonucunda borik asit katkılı numunenin Escherichia coli ve Staphylococcus aureus bakterilerine karşı etkili olduğu, ancak nano TiO₂ katkılı numunenin bu çalışmada anlamlı bir antibakteriyel aktivite göstermediği belirlenmiştir. Diyaframın frekans yanıtı Bode diyagramı ile incelenmiş ve ticari malzemelerle karşılaştırılabilir düzeyde olduğu belirlenmiştir. Diyafram, 100 Hz - 1 kHz aralığında ses iletimini güçlendirerek akciğer seslerinin daha iyi algılanmasını sağlarken, kalp seslerinin duyulacağı 20-150 Hz aralığında net bir stabil yanıt sunmaktadır. Ayrıca, 5 kHz üzerindeki frekanslarda ise çevresel gürültüyü baskılayarak stetoskop kullanımının klinik ortamlarda daha verimli olmasına katkıda bulunmuştur. Kenevir kumaş bazlı diyaframların biyolojik olarak parçalanabilir, çevre dostu ve antibakteriyel özelliklere sahip olması, tıbbi cihaz üretiminde sürdürülebilir malzeme alternatifleri sunabileceğini ortaya koymaktadır. Bu çalışma, doğal ve çevre dostu malzemelerin tıbbi uygulamalarda kullanım potansiyeline dikkat çekerek, antibakteriyel ve geri dönüştürülebilir alternatiflerin geliştirilmesine katkı sağlamaktadır.

Keywords

• Akustik performans
• Antibakteriyel özellik
• Kenevir kumaş
• Kompozit

Development of Hemp Based Stethoscope Diaphragm Material with Antibacterial and Acoustic Performance

Abstract

In this study, the use of hemp fabric-based composite materials as a natural and sustainable alternative to synthetic fibers in stethoscope diaphragm production was investigated. Boric acid and nano TiO₂ additives were incorporated into the diaphragms to impart antibacterial properties. Antibacterial tests revealed that the boric acid-added sample was effective against Escherichia coli and Staphylococcus aureus bacteria, whereas the nano TiO₂-added sample did not exhibit significant antibacterial activity. The frequency response of the diaphragm was analyzed using a Bode diagram, and it was found to be comparable to commercial diaphragm materials. The diaphragm enhanced sound transmission within the 100 Hz - 1 kHz range, facilitating better perception of lung sounds, while providing a stable and clear response within the 20-150 Hz range, where heart sounds are detected. Additionally, attenuation at frequencies above 5 kHz contributed to reducing ambient noise, improving the efficiency of stethoscope use in clinical settings. The biodegradability, environmental friendliness, and antibacterial properties of hemp fabric-based diaphragms demonstrate their potential as sustainable material alternatives in medical device manufacturing. This study highlights the potential of natural and eco-friendly materials for medical applications and contributes to the development of antibacterial and recyclable alternatives.

Keywords

• Acoustic performance
• Antibacterial properties
• Hemp fabric
• Composite

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