Vascular access methods and devices
First Claim
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1. A method for detecting positioning of a probe in a tissue of a patient, comprising:
- providing a device comprising a housing having a proximal portion and a distal portion coupled to a probe, the device further comprising;
a pressure sensing system at least partially carried by the housing and comprising a processing unit coupled with a pressure sensor so as to receive signal from the pressure sensor and determine from the received signal a pressure value of an environment about a distal portion of the coupled probe; and
an output unit carried by the housing and comprising a visual display, the output unit coupled to the pressure sensing system so as to receive pressure value signal and output to the visual display a reporting signal indicating the determined pressure value and/or positioning of the probe in the tissue of the patient;
advancing the device distally such that a distal portion of a probe advances through the tissue of the patient and toward a target vein of the patient;
detecting a change in pressure about the distal portion of the coupled probe during advancing so as to indicate probe positioning in a vein or an artery of the patient, and outputting corresponding reporting signal to the visual display.
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Abstract
Methods and devices for detecting positioning of a probe in a tissue of a patient. A method can include providing a detection device; advancing a device coupled probe through the tissue of the patient and toward the patient'"'"'s target tissue; detecting a change in pressure about the distal portion of the coupled probe during advancing, where the detected pressure change indicates probe positioning in a vein or artery of the patient; outputting the detected pressure change or indication of probe positioning to a visual display.
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Citations
25 Claims
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1. A method for detecting positioning of a probe in a tissue of a patient, comprising:
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providing a device comprising a housing having a proximal portion and a distal portion coupled to a probe, the device further comprising; a pressure sensing system at least partially carried by the housing and comprising a processing unit coupled with a pressure sensor so as to receive signal from the pressure sensor and determine from the received signal a pressure value of an environment about a distal portion of the coupled probe; and an output unit carried by the housing and comprising a visual display, the output unit coupled to the pressure sensing system so as to receive pressure value signal and output to the visual display a reporting signal indicating the determined pressure value and/or positioning of the probe in the tissue of the patient; advancing the device distally such that a distal portion of a probe advances through the tissue of the patient and toward a target vein of the patient; detecting a change in pressure about the distal portion of the coupled probe during advancing so as to indicate probe positioning in a vein or an artery of the patient, and outputting corresponding reporting signal to the visual display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device for detecting positioning of a coupled probe in a vein or artery of a patient, the device comprising:
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a housing having a proximal portion and a distal portion with a first port that is detachably couplable to a probe; a pressure sensing system at least partially carried by the housing and comprising a processing unit coupled with a pressure sensor so as to receive signal from the pressure sensor and determine from the received signal a pressure value of an environment about a distal portion of the coupled probe; an output unit carried by the housing and comprising a visual display, the output unit coupled to the pressure sensing system so as to receive pressure value signal and output to the visual display a reporting signal indicating the determined pressure value and/or positioning of the probe in a vein or artery of the patient; and a guidewire port carried by the housing and fluidly coupled to the first port. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An assembly for detecting positioning of a coupled probe in a vein or artery of a patient, the assembly comprising:
a device comprising a housing having a distal portion with a first port that is detachably coupled to a probe and a proximal portion with a second port detachably coupled to a syringe;
a pressure sensing system carried by the housing and comprising a processing unit coupled with a pressure sensor so as to receive signal from the pressure sensor and determine from the received signal a pressure value of an environment about a distal portion of the coupled probe;
an output unit carried by the housing and comprising a visual display, the output unit coupled to the pressure sensing system so as to receive pressure value signal and output to the visual display a reporting signal indicating the determined pressure value and/or positioning of the probe in a vein or artery of the patient;
wherein the pressure sensing system and the output unit are disposed substantially between the distal and proximal portions of the housing.
Specification