Radial compression hemostasis band with Doppler confirming vascular patency
Inventors
Assignees
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Publication Number
US-10470778-B2
Publication Date
2019-11-12
Expiration Date
Abstract
A radial compression band is 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. The arm band presents proximal and distal margins, with the arm opening being defined between the margins.
Core Innovation
The invention relates to a radial compression band for an arterial access site on the arm after an arterial sheath is removed, providing hemostatic compression while maintaining radial artery patency during hemostasis. Conventional compression is described as having problems including arterial collapse or occlusion and false assessment due to retrograde flow, and the invention addresses these issues by sensing blood flow to facilitate arterial patency during hemostasis.
The band includes an elongated arm band presenting an arm opening sized to receive the arm and an arterial pressure surface facing radially inward for compressive engagement with the access site. A Doppler probe is coupled to the arm band and spaced from the pressure surface so that the spacing provides an open area overlying the access site, and the Doppler probe senses blood flow through the artery to distinguish antegrade blood flow and retrograde blood flow at a target arterial zone during hemostasis.
The arm band further presents an access opening positioned between the pressure surface and the Doppler probe, with the access opening extending through the arm band to intersect the inner surface at a location aligned with the open area. The access opening is configured to receive the arterial sheath and permit the arterial sheath to pass directly through the arm band to the access site when donned, and the architecture can include a transparent window and an expandable hemostasis bladder with a hemostasis pad.
In described structural configurations, the band can include sectioned proximal and distal band sections with slots forming a circumferential slot/access opening, and a bistable band structure that switches between a coiled configuration and an uncoiled configuration. The described configuration can use a hook-and-loop fastener to secure overlapping ends in the coiled configuration, with circumferentially aligned and equidistant openings for the arterial access region.
Claims Coverage
The provided independent claims cover a radial compression band with a Doppler probe and an arterial pressure surface arranged to facilitate arterial patency during hemostasis at an arterial access site after sheath removal. Across the independent claims, the inventive coverage includes a Doppler-sensing arrangement with a dedicated access opening or region, plus circumferential alignment and optional visual/window and expandable-bladder structures.
Doppler-assisted arterial patency during hemostasis with spaced pressure surface
A Doppler probe coupled to the arm band and spaced from the pressure surface to sense blood flow through the artery and thereby facilitate arterial patency during hemostasis of the access site, with spacing between the pressure surface and Doppler probe providing an open area configured to overlie the access site.
Sheath-receiving access opening aligned with Doppler sensing region
An access opening located between the pressure surface and the Doppler probe, extending through the arm band to intersect the inner surface at a location aligned with the open area, and configured to receive the arterial sheath and permit the arterial sheath to pass directly through the arm band to the access site when the radial compression band is donned.
Circumferential alignment of pressure surface, Doppler probe, and access opening
The pressure surface, Doppler probe, and access opening being aligned circumferentially along the arm band.
Transparent window exposing underlying portion of the arm with bladder
A window located at least in part between the proximal and distal margins so as to expose the underlying portion of the arm; the pressure surface being positioned at least in part radially inward of the window; and an expandable bladder presenting the pressure surface, the bladder being at least substantially transparent so as to facilitate viewing of the access site, with the bladder positioned at least in part radially inward of the window and extending across at least part of the window.
The independent-claim coverage centers on a radial compression band that uses a Doppler probe spaced from an inward-facing arterial pressure surface to sense blood flow and facilitate arterial patency during hemostasis, while providing an access opening positioned between the pressure surface and the Doppler probe and configured to receive and pass the arterial sheath to the access site. The claims further specify circumferential alignment of these components and, in one independent claim, a window and an at-least-substantially transparent expandable bladder to facilitate viewing.
Stated Advantages
Facilitates arterial patency during hemostasis of the access site.
Documented Applications
Use on an arm of a wearer for radial compression hemostasis of an arterial access site after an arterial sheath is removed, with the Doppler probe sensing blood flow during hemostasis.
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