US 11,701,128 B2
Hemostatic device
Shuhei Matsushita, Hadano (JP); and Hiroshi Yagi, Fujinomiya (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 14, 2020, as Appl. No. 16/993,607.
Application 16/993,607 is a division of application No. 15/908,882, filed on Mar. 1, 2018, abandoned.
Application 15/908,882 is a continuation of application No. PCT/JP2016/075912, filed on Sep. 2, 2016.
Claims priority of application No. 2015-174197 (JP), filed on Sep. 3, 2015; application No. 2015-174198 (JP), filed on Sep. 3, 2015; and application No. 2015-174201 (JP), filed on Sep. 3, 2015.
Prior Publication US 2020/0367907 A1, Nov. 26, 2020
Int. Cl. A61B 17/135 (2006.01); A61B 17/132 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/135 (2013.01) [A61B 17/1325 (2013.01); A61B 2017/00557 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A hemostatic device comprising:
a flexible band configured to be wrapped around an arm in which a radial artery and an ulnar artery are located, the flexible band possessing a longitudinal extent that extends in a longitudinal direction;
a securing portion that secures the flexible band on the arm while the flexible band is wrapped around the arm in a wrapped state;
a support plate that is more rigid than the flexible band, the support plate being mounted on the flexible band so that the support plate and the flexible band move together as a unit;
an inflatable member connected to the flexible band and expandable upon being inflated in response to introducing a first fluid into an interior of the inflatable member to press a part of the radial artery to be subjected to hemostasis;
a pressing member disposed at a position spaced from a position of the inflatable member in the longitudinal direction of the flexible band to press the ulnar artery;
the pressing member possessing a length along the longitudinal direction of the flexible band that is shorter than a width of the pressing member along a direction orthogonal to the longitudinal direction of the flexible band;
the inflatable member possessing a first surface disposed on a side that will face the arm when the flexible band is in the wrapped state and a second surface disposed on a side facing the flexible band;
the pressing member including a third surface disposed on the side that will face the arm when the flexible band is in the wrapped state and a fourth surface disposed on the side facing the flexible band;
the pressing member is inflatable to outwardly expand by being injected with a second fluid;
a volume of the inflatable member in an inflated state is larger than a volume of the pressing member in an inflated state;
a length of a perpendicular line from the support plate to the first surface is longer than a length of a perpendicular line from the support plate to the third surface when the inflatable member and the pressing member are both in the inflated states in a state in which at least a part of the second surface of the inflatable member and at least a part of the fourth surface of the pressing member are in contact with a portion of the flexible band in which the support plate is disposed;
the support plate includes an inner surface that faces toward the arm when the flexible band is wrapped around the arm in the wrapped state, the inner surface of the support plate including a center inner surface portion, a first curved inner surface portion and a second curved inner surface portion, the center inner surface portion being positioned between the first and second inner surface portions along the longitudinal direction of the flexible band, and the first curved inner surface portion having a length along a longitudinal direction of the support plate longer than a length of the second curved inner surface portion along the longitudinal direction of the support plate such that the support plate has a longitudinal cross-sectional shape that is asymmetrical.