Simple auto electronic tourniquet
First Claim
1. A simple auto electronic tourniquet comprising:
- a wrapping member configured to wrap around an extremity of a human body and a controller provided on the wrapping member and configured to control pressure applied to the extremity by the wrapping member;
the controller comprising a diastolic blood pressure detecting circuit and a pressure setting and maintenance circuit;
the diastolic blood pressure detecting circuit configured to detect a development of a biological signal concerning a diastolic blood pressure occurring in the extremity when a pressure within the wrapping member is increased;
the pressure setting and maintenance circuit configured to set a first target pressure corresponding to the pressure within the wrapping member when the development of the biological signal is detected by the diastolic blood pressure detecting circuit and configured to control the pressure applied by the wrapping member to fall within a range of the target pressure.
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Abstract
The present invention provides a simple auto electronic tourniquet which does not inflict pain on a person receiving the tourniquet in a preparatory stage before venipuncture and which shortens the time required in preparation for venipuncture. The simple auto electronic tourniquet includes a manchette (wrapping member) wrapped around an upper arm and a controller provided on the manchette for controlling pressures to the upper arm by the wrapping member. The controller includes a diastolic blood pressure detecting circuit and a pressure setting and maintenance circuit. The pressure setting and maintenance circuit setting pressures of the manchette at a time when changes of a biological signal are detected by the diastolic blood pressure detecting circuit as target pressures.
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Citations
9 Claims
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1. A simple auto electronic tourniquet comprising:
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a wrapping member configured to wrap around an extremity of a human body and a controller provided on the wrapping member and configured to control pressure applied to the extremity by the wrapping member; the controller comprising a diastolic blood pressure detecting circuit and a pressure setting and maintenance circuit; the diastolic blood pressure detecting circuit configured to detect a development of a biological signal concerning a diastolic blood pressure occurring in the extremity when a pressure within the wrapping member is increased; the pressure setting and maintenance circuit configured to set a first target pressure corresponding to the pressure within the wrapping member when the development of the biological signal is detected by the diastolic blood pressure detecting circuit and configured to control the pressure applied by the wrapping member to fall within a range of the target pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification