Handheld electrocardiographic measurement device
A handheld electrocardiographic measurement device includes a substantially spheroidal body, a stopper projecting along an axial direction of the body to restrict a position of a thumb of one hand by abutting on a side surface of the thumb when a user grips the body with the one hand, a plate-shaped flange projecting from a side surface of the body in a direction orthogonal or substantially orthogonal to a projecting direction of the stopper, a first electrocardiographic electrode disposed on a back side of the body to touch a finger of the one hand when the body is gripped with the one hand, and a second electrocardiographic electrode disposed on a surface of the flange to touch a finger of the other hand when the flange is pinched by the other hand.
1. A handheld electrocardiographic measurement device comprising:
a substantially spheroidal body;
a stopper projecting along an axial direction of the body to restrict a position of a thumb of one hand by abutting on a side surface of the thumb when a user grips the body with the one hand;
a plate-shaped flange projecting from a side surface of the body in a direction orthogonal or substantially orthogonal to a projecting direction of the stopper;
a first electrocardiographic electrode disposed on a back side of the body to contact a finger of the one hand when the body is gripped with the one hand; and
a second electrocardiographic electrode disposed on a surface of the flange to contact a finger of the other hand when the flange is pinched by the other hand; wherein
a portion of the stopper is disposed between the first electrocardiographic electrode and the second electrocardiographic electrode.
2. The handheld electrocardiographic measurement device according to claim 1 , wherein a stepped portion is provided at a position near a distal end portion of the body on the back side, when viewed from the stopper.
3. The handheld electrocardiographic measurement device according to claim 1 , wherein a thickness of the flange is larger in an edge portion than in an inner side portion.
4. The handheld electrocardiographic measurement device according to claim 1 , further comprising:
an optical pulse wave sensor configured to acquire a pulse wave signal from a hand of the user.
5. The handheld electrocardiographic measurement device according to claim 4 , further comprising a shading cover attached to the body and structured to provide shade to the optical pulse wave sensor.
6. The handheld electrocardiographic measurement device according to claim 5 , wherein the shading cover has a semi-cylindrical or substantially semi-cylindrical shape.
7. The handheld electrocardiographic measurement device according to claim 5 , wherein the shading cover is attached to the body along the stopper on a distal end side of the stopper, and structured to swing on a swing shaft extending parallel or substantially parallel to the axial direction of the body.
8. The handheld electrocardiographic measurement device according to claim 7 , wherein a bias member biasing the shading cover in an opening direction is provided in the swing shaft.
9. The handheld electrocardiographic measurement device according to claim 5 , wherein the shading cover includes a lock mechanism that locks the shading cover in a closed state.
10. A handheld electrocardiographic measurement device comprising:
a substantially spheroidal body;
a stopper projecting along an axial direction of the body to restrict a position of a thumb of one hand by abutting on a side surface of the thumb when a user grips the body with the one hand;
a plate-shaped flange projecting from a side surface of the body in a direction orthogonal or substantially orthogonal to a projecting direction of the stopper;
a first electrocardiographic electrode disposed at a position offset from the stopper along a circumferential direction of the body to contact the thumb restricted by the stopper when the body is gripped with the one hand; and
a second electrocardiographic electrode disposed on a surface of the flange to contact a finger of the other hand when the flange is pinched by the other hand; wherein
a portion of the stopper is disposed between the first electrocardiographic electrode and the second electrocardiographic electrode.
11. The handheld electrocardiographic measurement device according to claim 10 , wherein a region of the body where the first electrocardiographic electrode is disposed is lower than a surrounding surface.
12. The handheld electrocardiographic measurement device according to claim 10 , wherein a stepped portion is provided at a position near a distal end portion of the body on the back side, when viewed from the stopper.
13. The handheld electrocardiographic measurement device according to claim 10 , wherein a thickness of the flange is larger in an edge portion than in an inner side portion.
14. The handheld electrocardiographic measurement device according to claim 10 , further comprising:
an optical pulse wave sensor configured to acquire a pulse wave signal from a hand of the user.
15. The handheld electrocardiographic measurement device according to claim 14 , wherein the first electrocardiographic electrode is provided around the optical pulse wave sensor.
16. The handheld electrocardiographic measurement device according to claim 14 , further comprising a shading cover attached to the body and structured to provide shade to the optical pulse wave sensor.
17. The handheld electrocardiographic measurement device according to claim 16 , wherein the shading cover has a semi-cylindrical or substantially semi-cylindrical shape.
18. The handheld electrocardiographic measurement device according to claim 16 , wherein the shading cover is attached to the body along the stopper on a distal end side of the stopper, and structured to swing on a swing shaft extending parallel or substantially parallel to the axial direction of the body.
19. The handheld electrocardiographic measurement device according to claim 18 , wherein a bias member biasing the shading cover in an opening direction is provided in the swing shaft.
20. The handheld electrocardiographic measurement device according to claim 16 , wherein the shading cover includes a lock mechanism that locks the shading cover in a closed state.