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Perforated Teflon Screen for Bipolar Electrode Disclosure Number: IPCOM000249799D
Publication Date: 2017-Apr-06
Document File: 1 page(s) / 194K

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The Prior Art Database


During the application of advanced bipolar energy, it is necessary to prevent shorting between the two poles of the device. This challenge is exacerbated when a combination device which utilizes both advanced bipolar energy and ultrasonic technology is envisioned. This disclosure describes a means to prevent electrical shorting while providing for controlled current distribution over the face of the electrode.

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Perforated Teflon Screen for Bipolar Electrode

Summary During the application of advanced bipolar energy, it is necessary to prevent shorting between  the two poles of the device. This challenge is exacerbated when a combination device which  utilizes both advanced bipolar energy and ultrasonic technology is envisioned.  This disclosure  describes a means to prevent electrical shorting while providing for controlled current  distribution over the face of the electrode.  

Description A screen can be fabricated from a polymeric sheet with small closely spaced holes.  The  polymer will provide electrical isolation between the two poles of bipolar energy.  The closely  spaced holes will allow current to flow through the tissue captured between the jaws.  By  utilizing a sheet stock comprised of base layers of polyimide film (e.g. Kapton) and surface  layers of PTFE (e.g. Teflon), a screen can be fabricated which has PTFE’s low friction  characteristics to moderate heat build‐up when in contact with the harmonic and good  thermal, electrical and physical characteristics from the polyimide.  The thicknesses of the  various layers in the polymer sheet can be adjusted to fine‐tune the desired characteristics such  as total electrical gap, lubricity and mechanical characteristics. The perforations of the screen  can be designed to control percent coverage of electrode by insulator, energy distribution  proximal to distal by varying the size and spacing of the perforations, energy ...