Catheter with integral biosensor
First Claim
1. A catheter for detecting a physiological parameter in a blood vessel, comprising:
- an elongated tube having a longitudinal axis;
a sensing port perforating an outer wall of the tube between proximal and distal ends of the tube;
at least one lumen extending longitudinally through the tube and connecting to the sensing port, the lumen having a longitudinal axis offset from the longitudinal axis of the tube;
a support member spanning the sensing port and positioned concentrically within the lumen; and
a biosensor connected to the support member and exposed through the sensing port.
1 Assignment
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Accused Products
Abstract
A single or multilumen intravenous catheter that may include an integral biosensor having an active portion exposed through a sensing port formed in a distal portion of an outer wall of the catheter. The biosensor may be formed on a flex circuit mounted to a support member or probe that displaces the active portion from an inner wall of the catheter for protection from friction during installation through a lumen. The support member or probe may position the biosensor concentrically within the lumen or against an inner diameter of the outer wall. The biosensor may be sealed about the sensing port to prevent passage of fluid therethrough, or a proximal end of the sensing port may remain open to allow flushing of the biosensor with saline infused through the lumen.
112 Citations
20 Claims
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1. A catheter for detecting a physiological parameter in a blood vessel, comprising:
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an elongated tube having a longitudinal axis;
a sensing port perforating an outer wall of the tube between proximal and distal ends of the tube;
at least one lumen extending longitudinally through the tube and connecting to the sensing port, the lumen having a longitudinal axis offset from the longitudinal axis of the tube;
a support member spanning the sensing port and positioned concentrically within the lumen; and
a biosensor connected to the support member and exposed through the sensing port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A catheter for detecting a physiological parameter in a blood vessel, comprising:
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an elongated tube;
a recessed area formed on an outer wall of the tube between proximal and distal ends of the tube;
at least one lumen extending longitudinally through the tube and forming an inner wall of the recessed area;
a mounting port formed through a transverse proximal wall of the recessed area; and
a biosensor extending through the mounting port and bonded to the outer wall of the tube on the recessed area. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A catheter for detecting a physiological parameter in a blood vessel, comprising:
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an elongated tube having a longitudinal axis;
a sensing port perforating an outer wall of the tube between proximal and distal ends of the tube;
at least one lumen extending from a proximal end of the tube longitudinally through the tube and terminating at a distal end of the sensing port, the lumen having a longitudinal axis offset from the longitudinal axis of the tube;
a probe extending through the lumen to the sensing port; and
a biosensor connected to the probe and exposed through the sensing port. - View Dependent Claims (17, 18, 19, 20)
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Specification