vevspenetrasjon

Vevspenetrasjon refers to the extent to which a substance, instrument, or energy source penetrates biological tissue. The concept is used across disciplines to describe how deeply tissue is affected under specific conditions, and it is influenced by the properties of both the penetrant and the tissue.

Applications include clinical procedures where needle or instrument depth matters, such as injections, biopsies, catheterization, or implant placement. It also applies to energy-based therapies (lasers, radiofrequency), forensic wound analysis, and safety testing of devices with respect to tissue injury.

Penetration depth depends on factors such as the sharpness, diameter, and geometry of the penetrating element; the applied force or energy; duration of contact; and the mechanical and structural properties of the tissue (density, elasticity, moisture). Tissues are layered (skin, fat, muscle, bone) and heterogeneous, which influences path and depth. The angle of entry and movement also play a role, as do patient-specific factors like age or pathology.

Assessment methods include imaging (ultrasound, MRI, CT) for in vivo measurements, and histological examination in excised tissue or phantom models. Standardized tests may be used in device development to compare penetration performance under defined conditions.

Understanding vevspenetrasjon supports safer procedures and better design of medical devices, with emphasis on minimizing unnecessary tissue damage and associated risks such as pain, infection, or scarring.