Sphygmomanometer

1. A sphygmomanometer comprising:

a base block;

a cuff block having a cuff for restricting flow of blood, the cuff block being connected to the base block in such a manner that an angle of the cuff block with respect to a horizontal plane is variable within an angular range;

a spring biasing unit for returning the cuff block to a position at a predetermined angle within the variable angular range of the cuff block when the cuff block is not used; and

an elbow supporting block provided with an elbow support for supporting an elbow of a user who inserts his/her arm into the cuff block on the upper surface thereof, wherein the elbow supporting block is slidably supported on the base block and is connected to the cuff block, so that the elbow supporting unit slides on the base block in accordance with the angular change of the cuff block with respect to the base block.

2. The sphygmomanometer of claim 1 , wherein the predetermined angle is an angle frequently used in a blood pressure measuring.

3. The sphygmomanometer of claim 1 , wherein the predetermined angle is adjustable.

4. The sphygmomanometer of claim 1 , further comprising a lock unit to restrict the change in the angle of the cuff block with respect to the base block.

5. The sphygmomanometer of claim 1 , wherein the cuff block is connected to the base block in such a manner that its horizontal position and its orientation about a vertical axis thereof are variable with respect to the base block.

6. The sphygmomanometer of claim 1 , wherein the cuff block is connected to the base block in such a manner that its vertical position is variable with respect to the base block.

7. The sphygmomanometer of claim 1 , further comprising a detecting unit for detecting whether an arm of a user is properly positioned.