Hemostatic device
AssigneeTerumo Kabushiki Kaisha
InventorKenichi HAZAMA
Life of this patent
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Abstract
A hemostatic device includes a band for being wrapped around a wrist W, securing means for securing the band in a state where the band is wrapped around the wrist, and an inflation portion disposed on an inner peripheral surface of the band, and that is inflated by injecting gas. The inflation portion has a first layer and a second layer which covers an outer surface of the first layer. The first layer is formed of a material which has a larger gas permeation amount per unit area than a material for forming the second layer. The second layer has gap portions which can expose the outer surface of the first layer outward from the second layer in a state where the inflation portion is inflated.
Claims20
A hemostatic device comprising:
- a band adapted to be wrapped around a limb of a patient at a site on the limb where bleeding is to be stopped;
- securing means for securing the band in a wrapped state around the limb;
- and
- an inflation portion disposed on an inner peripheral surface of the band, and adapted to be inflated by injecting gas;
- wherein the inflation portion has a first layer and a second layer disposed over an outer surface of the first layer;
- wherein the first layer is formed of a material which has a larger gas permeation amount per unit area than a material forming the second layer;
- and
- wherein the second layer has at least one gap portion adapted to expose an outer surface of the first layer outward from the second layer in a state where the inflation portion is inflated.
A hemostatic device comprising:
- a band adapted to be wrapped around a limb of a patient at a site on the limb where bleeding is to be stopped;
- securing means for securing the band in a wrapped state around the limb;
- and
- an inflation portion disposed on an inner peripheral surface of the band, and adapted to be inflated by injecting gas;
- wherein the inflation portion has a first layer and a second layer disposed over an outer surface of the first layer;
- and
- wherein the second layer has at least one gap portion adapted to expose an outer surface of the first layer outward from the second layer in a state where the inflation portion is inflated, the at least one gap portion having a closed configuration in a state where the inflation portion is not inflated and the at least one gap portion having an open configuration in a state where the inflation portion is inflated.
A method of using a hemostatic device, comprising:
- providing a hemostatic device including a band and an inflation portion, wherein the inflation portion has a first layer and a second layer disposed over an outer surface of the first layer;
- wherein the first layer is formed of a material which has a larger gas permeation amount per unit area than a material forming the second layer;
- and wherein the second layer has at least one gap portion adapted to expose an outer surface of the first layer outward from the second layer in a state where the inflation portion is inflated;
- wrapping the hemostatic device around a limb of a user and securing the band around the limb such that the inflation portion overlaps a puncture site on the limb;
- injecting an amount of a gaseous substance into the inflation portion such that the inflation portion inflates, thereby opening the at least one gap portion in the second layer;
- exposing a portion of the first layer through the opened at least one gap portion in the second layer such that a compressing force is applied to the puncture site;
- and
- reducing the compressing force on the puncture site over a predetermined period of time by discharging the gaseous substance through the portion of the first layer exposed through the opened at least one gap portion.
Dependencies are inferred from the claim text.