Apparatus and methods relating to intravascular positioning of distal end of catheter
First Claim
1. A placement system for placing a medical device within a body of a patient, comprising:
- a stylet including a magnetic assembly configured to produce at least a magnetic field;
a stylet advancement assembly designed to selectively advance a distal end of the stylet a predetermined distance past a distal tip of the medical device;
a sensor placed in proximity to the patient and configured to detect the magnetic field of the magnetic assembly when the medical device is disposed within a vessel of the patient, wherein detection by the sensor of the magnetic field is indicative of a relative location of a portion of the medical device within the vessel of the patient; and
at least a first electrode and a second electrode configured to generate an electric field, the placement system configured to obtain a plurality of field measurements of the electric field when the medical device is disposed in the vessel of the patient, the field measurements indicative of at least one location of a portion of the medical device within the vessel of the patient,wherein the field measurements are indicative to a user when an obstruction is encountered within the vessel by the medical device, the placement system enabling the user to observe the relative location of the portion of the medical device via detection of the magnetic field of the magnetic assembly by the sensor when the obstruction is encountered.
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Accused Products
Abstract
Devices and systems for navigation and positioning a central venous catheter within a patient. In an exemplary embodiment of a system of the present disclosure, the system comprises a first pole and a second pole, the first pole and the second pole configured to generate an electric field within a mammalian body sufficient to obtain a plurality of field measurements therein, and an elongated body configured for at least partial insertion into a blood vessel of the mammalian body and advancement through a vasculature, said advancement dependent upon the plurality of field measurements indicative of one or more locations of a portion of the elongated body within the vasculature. In at least one embodiment, the elongated body is configured as a stylet. In another embodiment, techniques for identifying and locating obstructions in the vessel in which a device is disposed are disclosed.
256 Citations
15 Claims
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1. A placement system for placing a medical device within a body of a patient, comprising:
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a stylet including a magnetic assembly configured to produce at least a magnetic field; a stylet advancement assembly designed to selectively advance a distal end of the stylet a predetermined distance past a distal tip of the medical device; a sensor placed in proximity to the patient and configured to detect the magnetic field of the magnetic assembly when the medical device is disposed within a vessel of the patient, wherein detection by the sensor of the magnetic field is indicative of a relative location of a portion of the medical device within the vessel of the patient; and at least a first electrode and a second electrode configured to generate an electric field, the placement system configured to obtain a plurality of field measurements of the electric field when the medical device is disposed in the vessel of the patient, the field measurements indicative of at least one location of a portion of the medical device within the vessel of the patient, wherein the field measurements are indicative to a user when an obstruction is encountered within the vessel by the medical device, the placement system enabling the user to observe the relative location of the portion of the medical device via detection of the magnetic field of the magnetic assembly by the sensor when the obstruction is encountered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification