Ultrasound stylet
First Claim
Patent Images
1. A stylet for use in medical procedures, comprising:
- an elongate member comprising a stiff wire tubular assembly configured to receive a catheter and configured for placing the catheter into a tissue;
an indicator configured to selectively activate a first status prompt to indicate a desired alignment of the elongate member;
wherein the stiff wire tubular assembly further comprises a non-imaging ultrasonic device fixed to a distal end of the elongate member, and further wherein the non-imaging ultrasonic device is configured to selectively generate ultrasonic waves in a direction longitudinally aligned with the elongate member, and to detect scattered ultrasonic waves;
a microprocessor operably connected to the non-imaging ultrasonic device and configured to control the selective generation of ultrasonic waves, and to process the detected scattered ultrasonic waves to detect an internal tissue-fluid boundary;
wherein the microprocessor is operably connected to the indicator, and the microprocessor causes the indicator to activate the first status prompt when the internal tissue-fluid boundary is detected, indicating the elongate member is aligned with the detected internal tissue-fluid boundary, prior to placing the catheter into the tissue.
2 Assignments
0 Petitions
Accused Products
Abstract
A stylet (100) includes a handle assembly (102) with an indicator display (112) and a stiff wire assembly (120) extending distally from the handle assembly (102) having a non-imaging ultrasonic device on a distal end. The stylet includes a circuit assembly having one or more of a pulser (120), a transmit/receive chip (132), a bandpass filter (134), a differential amplifier (136), an ADC (138), and an MCU (140), operable to control the operation of the ultrasonic device and to receive and analyze data from the ultrasonic device to facilitate implantation of a device such as a catheter.
-
Citations
23 Claims
-
1. A stylet for use in medical procedures, comprising:
-
an elongate member comprising a stiff wire tubular assembly configured to receive a catheter and configured for placing the catheter into a tissue; an indicator configured to selectively activate a first status prompt to indicate a desired alignment of the elongate member; wherein the stiff wire tubular assembly further comprises a non-imaging ultrasonic device fixed to a distal end of the elongate member, and further wherein the non-imaging ultrasonic device is configured to selectively generate ultrasonic waves in a direction longitudinally aligned with the elongate member, and to detect scattered ultrasonic waves; a microprocessor operably connected to the non-imaging ultrasonic device and configured to control the selective generation of ultrasonic waves, and to process the detected scattered ultrasonic waves to detect an internal tissue-fluid boundary; wherein the microprocessor is operably connected to the indicator, and the microprocessor causes the indicator to activate the first status prompt when the internal tissue-fluid boundary is detected, indicating the elongate member is aligned with the detected internal tissue-fluid boundary, prior to placing the catheter into the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification