US 12,257,077 B2
Clamping devices and methods for measuring blood pressure
Niels van Sparrentak, Camberwell (AU); and Rohan White, Camberwell (AU)
Assigned to Tournicare Pty Ltd, Camberwell (AU)
Appl. No. 17/442,305
Filed by Tournicare Pty Ltd, Camberwell (AU)
PCT Filed Mar. 23, 2020, PCT No. PCT/AU2020/050276
§ 371(c)(1), (2) Date Sep. 23, 2021,
PCT Pub. No. WO2020/191436, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019901000 (AU), filed on Mar. 25, 2019.
Prior Publication US 2022/0151561 A1, May 19, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/022 (2006.01); A61B 8/00 (2006.01); A61B 8/04 (2006.01)
CPC A61B 5/6838 (2013.01) [A61B 5/02233 (2013.01); A61B 5/6843 (2013.01); A61B 8/04 (2013.01); A61B 8/4209 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A clamping device for reducing blood flow in a human limb comprising:
a first rigid part having a first inner profile;
a second rigid part having a second inner profile generally facing the first inner profile; and
a coupling portion that telescopically couples the first rigid part and second rigid part to each other,
wherein the first inner profile has a degree of concavity that is greater than a degree of concavity of the second inner profile,
wherein the first and second inner profiles define a recess, and the recess is shaped to enable the clamping device to be positioned on the human limb,
wherein the first inner profile has a central portion with a central curvature that is less than an outer curvature at an outer portion of the curved first inner profile,
wherein the central curvature is greater than an inner curvature at an inner portion of the curved surface,
wherein a distal tip of the first inner profile extends further away than the second inner profile by an extension in the range of about 8 mm to 20 mm,
wherein the central curvature is defined by a central radius in the range of about 56 mm to about 76 mm, wherein the outer curvature is defined by an outer radius in the range of about 77 mm to about 105 mm, and wherein the inner curvature is defined by an inner radius in the range of about 40 mm to about 55 mm,
wherein the clamping device is configured to shift between an expanded configuration and a clamped configuration, and
wherein the first and second inner profiles are arranged to apply pressure against the human limb when the device is in the clamped configuration and thereby apply pressure to blood vessels in the human limb and reduce blood flow through the blood vessels.