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US 12,605,141 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.
Claims14
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, a distal portion, a joint between the proximal portion and the distal portion, a longitudinal direction, and a lateral direction extending between a first side and an opposite second side,
- wherein the proximal portion comprises a first material
- wherein the distal portion comprises a different second material and a guidewire lumen, wherein the guidewire lumen is defined by the second material, wherein the joint comprises:
- a transition between the first material and the second material, and
- a plurality of segments extending between a first joint location on the first side and a second joint location on the second side,
- wherein the plurality of segments comprises a first segment extending in the longitudinal direction,
- wherein the first joint location and the second joint location are spaced from one another in the longitudinal direction such that:
- the transition on the first side of the catheter body and the transition on the second side of the catheter body are spaced from one another in the longitudinal direction, and
- the transition extends in the lateral direction along the first segment,
- wherein the proximal portion comprises a first diameter and the distal portion comprises a larger, second diameter,
- wherein the larger, second diameter is co-located in the longitudinal direction with the transition,
- wherein the larger, second diameter at the second joint location comprises an opening of the guidewire lumen such that:
- an axial location of the opening of the guidewire lumen matches an axial location of the second joint location;
- and
- a guidewire is configured to extend through the guidewire lumen such that the guidewire extends adjacent to the second material and exits at the opening of the guidewire lumen without bending,
- wherein the distal portion comprises the larger, second diameter for an entire length distal of the joint such that the distal portion is sized for the guidewire to linearly extend through the guidewire lumen.
14 more elements
Dependencies are inferred from the claim text.