Effect of profile curvature of the needle point on the deformation of the human skin during penetration

Author

Ensaldo-Renteria, E.V. ; Rodriguez-Lelis, J.M. ; Herrera-Barrera, M. ; Arellano-Cabrera, J.A. ; Lucas-Jimenez, M.T. ; Rodriguez, J.A.

Author_Institution

Mech. Eng., CENIDET, Cuernavaca, Mexico

fYear

2014

fDate

7-12 April 2014

Firstpage

1

Lastpage

4

Abstract

A numerical study of the effect of the geometric profile of the needle point in the stress distribution of the skin during penetration of the cannula is presented. Here the curvature of the tip is addressed and comparison between a commercial type needle points against a curve needle point is carried out. A simple photoelastic penetration comparison in ballistic gel is also presented. Curve needle point exhibits higher stresses and lower deformations indicating an easier penetration in human skin and a likely pain decrement.

Keywords

biomechanics; deformation; gels; geometry; impact (mechanical); internal stresses; medical supplies; needles; numerical analysis; photoelasticity; physiological models; skin; ballistic gel; cannula penetration; commercial type needle point; curve needle point; deformations; human skin deformation; human skin penetration; needle point comparison; needle point geometric profile effect; needle point profile curvature effect; numerical study; pain; photoelastic penetration comparison; skin stress distribution; stresses; Force; Friction; Needles; Pain; Skin; Strain; Stress; cannula tip; deformation; geometric profile; penetration; photoelasticity; stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Health Care Exchanges (PAHCE), 2014 Pan American

Conference_Location

Brasilia

ISSN

2327-8161

Print_ISBN

978-1-4799-3554-3

Type

conf

DOI

10.1109/PAHCE.2014.6849630

Filename

6849630