- Guide hole design enables needle insertion at design speeds while allowing accurate and precise targeting
- Applicable to any guided needle intervention procedure like biopsy, brachytherapy, cryotherapy
The University of Central Florida invention is a guide hole design that enables accurate and precise needle targeting while minimizing the change in dynamic characteristics. As a result, the biopsy needle can fire at the designed speed, leading to a successful intervention. Percutaneous intervention procedures are employed in numerous surgical methods involving needle puncture (for example, core needle biopsy, brachytherapy, cryotherapy, and so on, for soft tissues like prostate, breast and liver).
Core needle biopsy (CNB) is a typical biopsy procedure that uses a hollow needle for extracting tissue samples from an organ to examine it for any possible malignancies. Several CNB procedures employ a template guide (a grid of guide holes) for physically guiding a biopsy needle to the target location. It enables accurate and precise targeting of the tumor. Targeting can be affected by three factors: 1) hand tremor during biopsy gun handling 2) physical guide (template grid) and 3) interaction of needle and tissue. While the first and third factors have been addressed, the second factor, which includes the influence of template guidance (guide holes) on tissue biopsy, has been largely ignored with very few studies performed on it. The influence of guide holes (template grid) on the dynamics of needle insertion can play a significant role in determining the quality of tissue biopsy.