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US 9,408,569 B2Granted
Vascular blood sampling catheter
AssigneeProVazo LLC
InventorsAndrew E. Andreae, Timothy J. Higgins, Jessica L. Ungerleider, Peter Jacob Neems
Life of this patent
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Abstract
A liquid sampling catheter contains a lumen filled by a sampling cannula with a hollow lumen and either a closed or open distal tip. Attached to the proximal end of the device is a modular blood storage component. The sampling stick slides through the patient's skin or through a seal and in-dwelling lumen on a corresponding sampling hub to sample blood from a patient. This embodiment establishes a simple, standardized, and quick procedure for sampling small amounts of bodily liquids such as blood for a variety of analyte tests.
Claims60
A method of sampling liquids from within a patient comprising:
- a) inserting a sampling device into a region within a patient, the sampling device comprising a delivery catheter and sampling cannula located within a lumen of the delivery catheter and having a longitudinal axis, the delivery catheter being moveable over the sampling cannula by retraction or extension of the delivery catheter;
- b) moving the sampling cannula towards a target volume of the patient causing a retraction of the delivery catheter relative to the sampling cannula, thereby exposing the sampling cannula to the target volume of the patient;
- and
- c) allowing liquid within the target volume of the patient into the sampling cannula;
- wherein inserting the sampling device comprises (i) transitioning a proximal valve of a sampling hub from a closed state to an open state by inserting a distal end of the delivery catheter and the sampling cannula at least partially through the proximal valve and (ii) inserting the sampling cannula through a distal valve and distal end of the sampling hub while the distal end of the delivery catheter remains proximal to the distal valve;
- wherein inserting the sampling device further comprises positioning the sampling cannula and the delivery catheter to be entirely proximal to the sampling hub while the sampling cannula is located within the lumen of the delivery catheter.
3 more elements
A method comprising:
- a) inserting a probe device into a region within a patient, the probe device comprising a delivery catheter and a cannula located within a lumen of the delivery catheter and having a longitudinal axis, the delivery catheter being moveable over the cannula by retraction or extension of the delivery catheter;
- b) moving the cannula towards a target volume of the patient causing a retraction of the delivery catheter relative to the cannula, thereby exposing the cannula to the target volume of the patient;
- and
- c) placing the target volume of the patient in fluid communication with a lumen of the cannula;
- wherein inserting the probe device comprises (i) transitioning a proximal valve of a hub from a closed state to an open state by inserting a distal end of the delivery catheter and the cannula at least partially through the proximal valve and (ii) inserting the cannula through a distal valve and a distal end of the hub while the distal end of the delivery catheter remains proximal to the distal valve;
- wherein inserting the probe device further comprises positioning the cannula and the delivery catheter to be entirely proximal to the hub while the cannula is located within the lumen of the delivery catheter.
3 more elements
A method of sampling liquids from within a patient comprising:
- a) inserting a sampling device into a region within a patient, the sampling device comprising a delivery catheter and sampling cannula located within a lumen of the delivery catheter and having a longitudinal axis, the delivery catheter being moveable over the sampling cannula by retraction or extension of the delivery catheter;
- b) moving the sampling cannula towards a target volume of the patient causing a retraction of the delivery catheter relative to the sampling cannula, thereby exposing the sampling cannula to the target volume of the patient;
- and
- c) allowing liquid within the target volume of the patient into the sampling cannula;
- wherein inserting the sampling device comprises (i) transitioning a proximal valve of a sampling hub from a closed state to an open state by inserting a distal end of the delivery catheter and the sampling cannula at least partially through the proximal valve and (ii) inserting the sampling cannula through a distal valve and distal end of the sampling hub while the distal end of the delivery catheter remains proximal to the distal valve;
- wherein the sampling device further comprises an outer body with the delivery catheter being located within a body chamber of the outer body, the sampling cannula being secured to the outer body, the delivery catheter being moveable over the sampling cannula by retraction or extension of the delivery catheter, and the sampling cannula having a length that is shorter than a combined length of the outer body and the delivery catheter.
3 more elements
A method comprising:
- a) inserting a probe device into a region within a patient, the probe device comprising a delivery catheter and a cannula located within a lumen of the delivery catheter and having a longitudinal axis, the delivery catheter being moveable over the cannula by retraction or extension of the delivery catheter;
- b) moving the cannula towards a target volume of the patient causing a retraction of the delivery catheter relative to the cannula, thereby exposing the cannula to the target volume of the patient;
- and
- c) placing the target volume of the patient in fluid communication with a lumen of the cannula;
- wherein inserting the probe device comprises (i) transitioning a proximal valve of a hub from a closed state to an open state by inserting a distal end of the delivery catheter and the cannula at least partially through the proximal valve and (ii) inserting the cannula through a distal valve and a distal end of the hub while the distal end of the delivery catheter remains proximal to the distal valve;
- wherein the probe device further comprises an outer body with the delivery catheter being located within a body chamber of the outer body, the cannula being secured to the outer body, the delivery catheter being moveable over the cannula by retraction or extension of the delivery catheter, and the cannula having a length that is shorter than a combined length of the outer body and the delivery catheter.
3 more elements
Dependencies are inferred from the claim text.