Loading patent…
AssigneeSiemens Elema AB
InventorBruno Slettenmark
Estimating the term…
In a method for locating a measurement and/or treatment catheter in a vessel or organ of a patient relative a fixed catheter, also positioned within the patient in the vicinity of the measurement and/or treatment catheter signals are transmitted from one of the catheters and received at the other one. The position and direction of the measurement and/or treatment catheter relative to the fixed catheter is then determined from the received signals. An arrangement for locating a measurement and/or treatment catheter, intended to be positioned in a vessel or organ of a patient, also includes a fixed catheter, also intended to be positioned within the patient in the vicinity of the measurement and/or treatment catheters. One of the catheters has a signal transmitter and the other one has a signal receiver for receiving signals from the signal transmitter. A signal processor determines from the received signals the position of the measurement and/or treatment catheter relative to the fixed catheter.
A method for locating a catheter in a patient comprising the steps of:
An apparatus for locating a catheter in a patient, comprising:
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Drawings are temporarily unavailable. Open the PDF at USPTO
Measuring for diagnostic purposes ; Identification of persons: devices, other than using radiation, for detecting or locating foreign bodies ;…
Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing…
Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment: arrangements…
Involving generating temporal series of image data: involving fluoroscopy
Term ended 5 Nov 2018 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention is directed to a method and an arrangement for locating a measurement and/or a treatment catheter in a vessel or an organ of a patient, wherein signals are transmitted (emitted) by one of these catheters, the signals being used to locate the position of the catheter which transmitted the signals.
2. Description of the Prior Art
FIG. 1 schematically illustrates a measurement and/or treatment catheter and a fixed catheter introduced into respective chambers of a heart, in accordance with the invention.
FIG. 2 schematically illustrates the distal tip portion of the fixed catheter provided with two triaxial coils in accordance with one embodiment of the invention.
FIG. 3 illustrates the tip portion of a measurement and/or treatment catheter in accordance with the invention.
In FIG. 1 a part of a heart 2 is schematically shown with a measurement and/or treatment catheter 4 introduced into one of the heart chambers 6 and a fixed catheter 8 introduced into the other heart chamber 10. The body surface is shown at 12.
One of the catheters 4 or 8 is provided with a transmitter and the other of the catheters 4 or 8 is provided with a receiver. It is not important whether the catheter 4 is provided with a transmitter and the catheter 8 is provided with a receiver, or vice versa.
In the shown embodiment the fixed catheter 8 is connected to a transmitter unit 18 through conductors 20 for energizing the transmitter 16. The receiver means 14 of the measurement and/or treatment catheter 4 are through electrical conductors 22 extending inside the catheter 4 connected to a receiver unit 24, which is connected to a signal processor 26 for determining the position of the measurement and/or treatment catheter 4 relative the fixed catheter 8 from the received signals, as described more in detail below. The results can be shown on a display 28.