Analysis of current density in the carpal tunnel region during an electrical accident by way of the finite element method

Morse, Michael S.; Berg, Jennifer S.; Wolde, R.L.T.

doi:10.1109/iembs.2003.1279718

Cited by 2 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prior FEM research has suggested that current density in a hand involved electrical contact will be elevated in the wrist (carpal tunnel) region [1,2]. The limitation of this earlier work was the mathematical complexity introduced by the use of very complex geometries derived from the visible human project.…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Use of the Finite Element Method to Assess Impact of Current on Forearm and Wrist During an Electrical Accident

Morse

Morse²

2006

2006 International Conference of the IEEE Engineering in Medicine and Biology Society

View full text Add to dashboard Cite

Using geometric primitives, a three dimensional finite element model has been developed to assess the pathway followed by electric current during an electrical accident assuming the entry point for the current was on one hand. Results indicate that the area where the risk of soft tissue injury is greatest is in the wrist region. Current entry on the palm or finger fronts was found to be more likely to yield injury to the median nerve than an entry point on the back of the hand. The lesser injury is theorized to result because of current shielding of the nerve by bone.

show abstract

Section: Introductionmentioning

confidence: 96%

“…The use of simple primitives created a reasonable approximation of the tissue type and geometry of the lower arm and hand while also allowing for FEM analysis of a much greater three dimensional volume than in prior models in which more complex geometries had been used in the model [1].…”

Section: Introductionmentioning

confidence: 99%

Use of the Finite Element Method to Assess Impact of Current on Forearm and Wrist During an Electrical Accident

Morse

Morse²

2006

2006 International Conference of the IEEE Engineering in Medicine and Biology Society

View full text Add to dashboard Cite

show abstract

“…Morse investigated carpal tunnel syndrome using the simple electrical‐current division method and finite element method [14]. He found relatively higher electrical current density flowing through nerves and vessels than other adjacent tissues of high electrical resistivity.…”

Section: Introductionmentioning

confidence: 99%

Determination of Human Penile Electrical Resistance and Implication on Safety for Electrosurgery of Penis

Tsai¹,

Chang²,

Liu³

et al. 2010

The Journal of Sexual Medicine

View full text Add to dashboard Cite

Introduction Electrosurgery has been a surgical application since the late 19th century. Although many urologists take this daily application for granted, the effects of electrical treatment on penile nerves and vessels have not been well documented. Aim To investigate the electrical characteristics of the penis and erectile tissues and to discover the potential hazards of electrosurgery on the penis. Methods Measurement of the electrical characteristics of three human penises in order to create models to analyze the effect of electricity on penile nerves and vessels. Main Outcome Measures Electrical resistivity of the penile shaft, electrical current density, and electric field strength on penile nerves and vessels, proportion of generated heat on the penis and electrical current density of the electrosurgery return electrode. Results Electrical resistivity (ρ) of the penile shaft is 127.14 Ω · cm at 500 kHz. Electrical current density (J) of the penis shaft is 71.06 mA/cm†, nerve (60.23 mA/cm†), vessel (67.93 mA/cm†), and return electrode (2.11 mA/cm†). Electrical field strength (E) of the whole penis shaft is 9.03 volt/cm. The proportion of generated heat on the penis is four times as much as on other body parts of the circuit. Conclusions Potential and subclinical injury to erectile tissue caused by electrosurgery on the penis cannot be underestimated. The injury mechanism can be attributed to a thermal (electrical current) effect and a nonthermal (mainly electrical field) effect. Ways to avoid the electrosurgical injury are: using less power (W)/electrical field and less time, biopolar electrosurgery confining the injured area, ligation to achieve hemostasis, and new laser technologies.

show abstract

Analysis of current density in the carpal tunnel region during an electrical accident by way of the finite element method

Cited by 2 publications

References 10 publications

Use of the Finite Element Method to Assess Impact of Current on Forearm and Wrist During an Electrical Accident

Use of the Finite Element Method to Assess Impact of Current on Forearm and Wrist During an Electrical Accident

Determination of Human Penile Electrical Resistance and Implication on Safety for Electrosurgery of Penis

Contact Info

Product

Resources

About