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15:13 May 24, 2003
English to French translations [PRO] Medical
English term or phrase:non-compliant inflation range
Multilayered balloon for attachment to a medical catheter : said balloon is characterized by a compliance characteristic described by a continuous nonlinear compliance curve, said compliance curve having a non-compliant initial inflation range, a transition point and a compliant second inflation range.
Choosing a noncompliant balloon for expanding the stent might be considered to achieve a lesser stent expansion than with a semicompliant balloon having the same nominal pressure, because the increase in its diameter as inflation pressure increases is smaller. However, balloon pressure and tissue distending force are not identical. Indeed, stretching and deformation of semicompliant material under pressure prevents the concentration of the force at the less compliant aspects of the vessel as the balloon stretches around the stenosis and toward the more compliant areas (the "clothesline effect"). These areas may include the space between metal struts, the balloon ends intraluminally, and the struts apposed to the softer aspects of the plaque. In contrast, the noncompliant balloon will not increase past its nominal diameter with increasing pressure. This phenomenon will allow for increased distending force at the least compliant aspects of the stented lesion, which would include the area of stent struts approximating hard plaque. Thus the use of a noncompliant balloon at the levels of pressure as used in the current study may ultimately permit better stent expansion.
The GHOST PTA™ dilatation catheter is engineered for maximum steerability and pushability. The coaxial shaft design provides a proximal shaft with enhanced column strength for pushability and decreased distal shaft for optimum steerability.
The micro-thin balloon maintains tip flexibility when deflated allowing exceptional trackability through tortuous vessels.
High Pressure Non-compliant Balloon
The GHOST PTA™ dilatation catheter provides a micro-thin, non-compliant balloon with a low profile. It has nominal dimensions at the low end of working range and a high rated burst pressure. The flexible tip is achieved using a tapered tip design. It has minimal winging for improved crossability.
Double Tapered Balloon
The GHOST PTA™ dilatation catheter balloon is tapered at the distal and proximal ends for enhanced transition across the stenosis and post dilatation ease of withdrawal into the introducer.
NuMED balloons have the ability to conform to vessel shape while maintaining maximum inflation pressure. This reduces trauma to delicate vessel intima.