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US 11,141,131 B2Granted
Smooth transition catheters
AssigneePhilips Image Guided Therapy Corporation
InventorsJeremy Stigall, Maritess Minas
Life of this patent
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Abstract
The present invention generally relates to a rapid exchange configuration that reduces the profile of a catheter riding on a guidewire and minimizes guidewire resistance. According to certain embodiments, a body of the catheter includes a distal portion and a proximal portion. The distal portion defines a guidewire lumen and includes a guidewire exit port being open in an proximal direction and leading to the guidewire lumen. A proximal section of the guidewire lumen is straight.
Claims12
An intraluminal catheter, comprising:
- a catheter body configured to be positioned within a body lumen of a patient,
- wherein the catheter body comprises a proximal portion coupled to a distal portion, a first side, and an opposite second side,
- wherein the proximal portion comprises a first material, a first diameter, a first outer surface,
- wherein the distal portion comprises a different second material, a second diameter, a second outer surface,
- wherein the first diameter is smaller than the second diameter,
- wherein the first outer surface of the proximal portion and the second outer surface of the distal portion are aligned on the first side of the catheter body,
- wherein the first outer surface of the proximal portion and the second outer surface of the distal portion are unaligned on the second side of the catheter body by the first diameter of the proximal portion and the second diameter of the distal portion,
- wherein the first diameter of the proximal portion defines a space for a guidewire to extend alongside the first material of the proximal portion and outside of the catheter body on the second side of the catheter body,
- wherein the second diameter of the distal portion defines a guidewire lumen for the guidewire to extend alongside the second material of the distal portion and inside of the catheter body on the second side of the catheter body,
- wherein the guidewire lumen defined by the second diameter is aligned with the space for the guidewire defined by the first diameter,
- wherein the second material defines the second outer surface of the distal portion, the guidewire lumen, and an inner lumen distinct from the guidewire lumen,
- wherein a portion of the second material is disposed between the guidewire lumen and the inner lumen along an entire length of the guidewire lumen,
- wherein an opening of the guidewire lumen is longitudinally co-located with a transition between the first material of the proximal portion and the second material of the distal portion.
10 more elements
Dependencies are inferred from the claim text.