Development of an injection needle with impedance measuring capability
Ahonen, Petri (2016)
2016
Konetekniikan koulutusohjelma
Teknisten tieteiden tiedekunta - Faculty of Engineering Sciences
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Hyväksymispäivämäärä
2016-04-06
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201603313768
https://urn.fi/URN:NBN:fi:tty-201603313768
Tiivistelmä
Needle guidance is a common challenge in subcutaneous medical operations. In various operations it is essential to know the location of the tip of the needle, e.g. in spinal and epidural anaesthesia, drug delivery, joint punctures and biopsies. The bioimpedance measuring needle (BIP Needle) presented in this thesis can be used on it’s own to provide information of the tissue where the needle tip is located, or it can be used with existing technologies, such as ultrasonography, to provide additional information.
This work was made in collaboration with Injeq Oy, which is a company developing and manufacturing injection needles with impedance measuring capability and an analyzer device to recognize the tissue in the immediate vicinity of the needle tip. The discrimination is based on different electrical properties of tissues. The equipment measures the electrical impedance of tissue and the recognition is based on electrical impedance spectroscopy (EIS). The developed needle would facilitate medical operations where information of the location of the needle is required.
In this thesis is described the development process leading to the final product what is called BIP Needle. The fundamental research process and early prototypes are presented, which were made to find a suitable manufacturing technique, structure and materials for the product. Thereafter is described the design process, structure and principal requirements of the BIP Needle. Also the preliminary structure for the manufacturing line for the initial production is described, including related requirements and documentation.
This work was made in collaboration with Injeq Oy, which is a company developing and manufacturing injection needles with impedance measuring capability and an analyzer device to recognize the tissue in the immediate vicinity of the needle tip. The discrimination is based on different electrical properties of tissues. The equipment measures the electrical impedance of tissue and the recognition is based on electrical impedance spectroscopy (EIS). The developed needle would facilitate medical operations where information of the location of the needle is required.
In this thesis is described the development process leading to the final product what is called BIP Needle. The fundamental research process and early prototypes are presented, which were made to find a suitable manufacturing technique, structure and materials for the product. Thereafter is described the design process, structure and principal requirements of the BIP Needle. Also the preliminary structure for the manufacturing line for the initial production is described, including related requirements and documentation.