Ultrasonic needles for bone biopsy
Autor: | Rebecca Cleary, Hamish Simpson, Li Li, Andrew Mathieson, Robert Wallace, Margaret Lucas |
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Jazyk: | angličtina |
Rok vydání: | 2017 |
Předmět: |
Materials science
Acoustics and Ultrasonics Finite Element Analysis Metaphysis Bone tissue 01 natural sciences Bone and Bones 03 medical and health sciences 0302 clinical medicine Biopsy Site Ultrasonic Surgical Procedures 0103 physical sciences Biopsy medicine Animals Humans Electrical and Electronic Engineering 010301 acoustics Instrumentation Sheep medicine.diagnostic_test Biopsy Needle Equipment Design Diaphysis Ultrasonic horn medicine.anatomical_structure Needles 030220 oncology & carcinogenesis Cortical bone Biomedical engineering |
ISSN: | 0885-3010 |
Popis: | Bone biopsy is an invasive clinical procedure, where a bone sample is recovered for analysis during the diagnosis of a medical condition. When the architecture of the bone tissue is required to be preserved, a core-needle biopsy is taken. Although this procedure is performed while the patient is under local anaesthesia, the patient can still experience significant discomfort. Additionally, large haematoma can be induced in the soft tissue surrounding the biopsy site due to the large axial and rotational forces, which are applied through the needle to penetrate bone. It is well documented that power ultrasonic surgical devices offer the advantages of low cutting force, high accuracy, and preservation of soft tissues. This paper reports a study of the design, analysis, and test of two novel power ultrasonic needles for bone biopsy that operate using different configurations to penetrate bone. The first utilizes micrometric vibrations generated at the distil tip of a full-wavelength resonant ultrasonic device, while the second utilizes an ultrasonic-sonic approach, where vibrational energy generated by a resonant ultrasonic horn is transferred to a needle via the chaotic motion of a free-mass. It is shown that the dynamic behavior of the devices identified through experimental techniques closely match the behavior calculated through numerical and finite-element analysis methods, demonstrating that they are effective design tools for these devices. Both devices were able to recover trabecular bone from the metaphysis of an ovine femur, and the biopsy samples were found to be comparable to a sample extracted using a conventional biopsy needle. Furthermore, the resonant needle device was also able to extract a cortical bone sample from the central diaphysis, which is the strongest part of the bone, and the biopsy was found to be superior to the sample recovered by a conventional bone biopsy needle. |
Databáze: | OpenAIRE |
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