Radial compression hemostasis band with Doppler confirming vascular patency
Inventors
Assignees
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Publication Number
US-9463026-B2
Publication Date
2016-10-11
Expiration Date
Abstract
A hemostatic compression system facilitates patent hemostasis of an arterial access site on the arm of a wearer. The system includes a radial compression band and a Doppler probe. The radial compression band includes an elongated arm band sized to receive the arm. The compression band also includes a pressure surface coupled to the arm band and facing radially inward for compressive engagement with the access site. The Doppler probe is coupled to the arm band adjacent the pressure surface and is configured to sense blood flow through the artery. Hemostatic compression applied by the radial compression band is variable in response to the sensed blood flow so as to ensure patency of the artery during hemostasis of the site.
Core Innovation
The invention provides a radial compression band configured to provide hemostatic compression to an arterial access site on the arm of a wearer. The radial compression band includes an elongated arm band that presents an arm opening sized to receive the arm, and proximal and distal margins with the arm opening being defined between the margins. The arm band also presents a window located between the proximal and distal margins so as to expose the underlying portion of the arm.
The radial compression band further includes an arterial pressure pad projecting radially inward relative to the arm band for engagement with the access site. An opening-adjustment component adjusts the size of the arm opening, and adjustment of the arm opening size varies the pressure applied by the pad against the access site. The pressure pad is located radially inboard of the window and extends across at least part of the window to visibly facilitate engagement of the pressure pad with the access site.
In a hemostatic compression system, the invention couples the radial compression band to a Doppler probe positioned adjacent the arterial pressure surface. The Doppler probe is configured to sense blood flow through the artery, and the hemostatic compression applied by the radial compression band is variable in response to the sensed blood flow to ensure patency of the artery during hemostasis of the site. The system thus integrates variable compression with flow sensing at the arterial access site.
Claims Coverage
The independent claims cover two closely related concepts: (i) a radial compression band structure that uses a variable arm opening to vary inward pressure at an arterial access site while exposing the access site via a window, and (ii) a hemostatic compression system that adds a Doppler probe and makes the compression variable in response to sensed blood flow to ensure arterial patency during hemostasis. Across these two independent claims, the main inventive features include the windowed arm band with an inward-projecting pressure pad, a mechanism for adjusting the arm opening size to vary applied pressure, and Doppler-based flow sensing used as the basis for varying compression.
Variable radial compression band with adjustable arm opening and inward pressure pad
An elongated arm band having an arm opening sized to receive the arm, the arm opening being defined between proximal and distal margins; an opening-adjustment component operable to adjust the size of the arm opening; and an arterial pressure pad projecting radially inward relative to the arm band for engagement with the access site, where adjustment of the arm opening size by the component varies the pressure applied by the pad against the access site.
Window exposing access site with pressure pad radially inboard of the window
A window located between the proximal and distal margins so as to expose the underlying portion of the arm; and a pressure pad located radially inboard of the window and extending across at least part of the window so as to visibly facilitate engagement of the pressure pad with the access site.
Hemostatic compression system with Doppler probe sensing blood flow and variable compression
A radial compression band configured to provide variable hemostatic compression to the arterial access site, including an elongated arm band presenting an arm opening sized to receive the arm and an arterial pressure surface coupled to the arm band to face radially inward for compressive engagement with the access site, with the pressure surface located radially inboard of the window and extending across at least part of the window; and a Doppler probe coupled to the arm band so as to be located adjacent the pressure surface, configured to sense blood flow through the artery, with hemostatic compression applied by the radial compression band being variable in response to the sensed blood flow so as to ensure patency of the artery during hemostasis of the site.
Claim coverage centers on a windowed radial compression band with an adjustable arm opening that varies inward arterial pressure via an inward-projecting pressure pad, and on a system that adds a Doppler probe positioned adjacent the pressure surface to sense blood flow and vary compression to ensure patency during hemostasis.
Stated Advantages
Ensures patency of the artery during hemostasis of the site by varying hemostatic compression in response to sensed blood flow.
Documented Applications
Facilitating hemostasis of an arterial access site on the arm of a wearer using a hemostatic compression system with variable compression and Doppler flow sensing.
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