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US 6,183,424 B2Granted
Pressure measuring guide wire
AssigneeSchneider (Europe) A.G.
InventorMichael Schwager
Life of this patent
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Abstract
The pressure measuring guide wire comprises an elongated flexible shaft with a lumen extending therethrough. The lumen is surrounded by a wall forming the shaft and the distal portion of which is provided with slots for pressure medium entry. The distal portion has a thickness, greater than the thickness of the proximal area of the shaft. A coil surrounds the proximal area of the shaft to compensate the difference in kinking resistance between the proximal and distal areas of the shaft.
Claims3
A pressure measuring guide wire comprising:
- a) an elongate nickel titanium alloy shaft having
- a proximal area having a first resistance to kinking,
- a distal area having a second resistance to kinking,
- a lumen extending through the shaft,
- a wall means surrounding the lumen, and
- at least one aperture in the distal area of the shaft for entry of a pressure measuring medium into the lumen, and
- b) a flexible assembly mounted on the distal area of the shaft, the assembly having
- a coil having a proximal portion in engagement with the distal area of the shaft and a distal portion terminating in a tip,
- a core member having a proximal portion in engagement with the distal area of the shaft and a distal portion in engagement with the tip of the coil.
6 more elements
Dependencies are inferred from the claim text.