1. A device for measuring blood vessel elasticity, adapted to sphygmus oscillation signal measured by pressure sensor of blood pressure equipment, comprising:
uses said sphygmus oscillation signal to calculate systolic blood pressure and diastolic blood pressure;
extracts a sphygmus signal after corresponds to said diastolic blood pressure;
finds maximum slope of said extracted sphygmus signal;
finds a first time by using said maximum slope down to a reference pressure;
finds a second time by using said maximum slope down to lowest point of said extracted sphygmus signal; and
compares said first time and said second time to get indicator of blood vessel elasticity.
2. The method as claimed in claim 1, wherein said reference pressure is 90 mmHg.
3. The method as claimed in claim 1, wherein said method further includes performs signal filtering and calculation for said oscillation signal to calculate said systolic blood pressure and said diastolic blood pressure.
4. The method as claimed in claim 1, wherein said method further includes displays said indicator of blood vessel elasticity to a user for reference.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A light source apparatus comprising:
a primary light source module including a primary light source configured to emit primary light;
a light conversion module including a light conversion unit configured to convert optical properties of the primary light emitted from the primary light source and to generate secondary light;
a light guide path, arranged between the primary light source module and the light conversion module, configured to guide the primary light emitted from the primary light source to the light conversion module from the primary light source module;
a first connecting portion configured to connect detachably the light conversion module with the light guide path; and
a second connecting portion configured to connect detachably the primary light source module with the light guide path.
2. The apparatus according to claim 1, wherein
the first connecting portion has an access restricting portion configured to inhibit an operation of attaching or detaching the light guide path to or from the light conversion unit, and
access restriction of the access restricting portion is canceled by a predetermined access restriction canceling operation and an attachingdetaching operation between the light guide path and the light conversion unit is enabled.
3. The apparatus according to claim 2, wherein the first connecting portion is provided at one end portion of the light guide path, and the second connecting portion is provided at the other end portion of the light guide path.
4. The apparatus according to claim 3, wherein
the light guide path is an optical fiber,
the light conversion module has a light conversion unit side optical fiber having one end connected to the light conversion unit, and
the access restricting portion of the first connecting portion is formed out of a sleeve configured to be fitted onto a connecting portion between a ferrule fixed to a connection end of the optical fiber which is the light guide path and a ferrule fixed to a connection end of the light conversion unit side optical fiber.
5. The apparatus according to claim 2, wherein the access restricting portion has a physical structure configured to inhibit physically an operation of attachingdetaching the first connecting portion.
6. The apparatus according to claim 5, wherein the physical structure cancels the access restriction of the first connecting portion by an access restriction canceling operation using a tool.
7. The apparatus according to claim 6, wherein
the tool for the access restriction canceling operation is a special tool having a special distal end shape, and
the access restricting portion has a fitting structure with a special shape associated with the distal end shape of the special tool.
8. The apparatus according to claim 5, wherein
the physical structure includes an access restriction cover configured to cover a substantially entire outer peripheral surface of the first connecting portion in a state that the first connecting portion is connected, and
the access restriction canceling operation is carried out by an operation of removing the cover.
9. The apparatus according to claim 8, wherein the access restriction cover is a cover member having at least one of waterproof properties, heat resisting properties, and impact resisting properties.
10. The apparatus according to claim 2, wherein the access restricting portion includes a warning display portion that is provided near an access restricting portion of the first connecting portion.
11. The apparatus according to claim 1, wherein an attached function of the second connecting portion is different from that of the first connecting portion.
12. The apparatus according to claim 11, wherein
the first connecting portion has a higher level of access restriction than that of the second connecting portion, and
attachment and detachment of the second connecting portion are more easily enabled than the first connecting portion.
13. The apparatus according to claim 11, wherein
the second connecting portion has a higher level of safety than the first connecting portion, and
the second connecting portion has a smaller risk of leakage of the primary light to the outside than the first connecting portion when a connecting operation error occurs.
14. The apparatus according to claim 11, wherein an area of a section of the second connecting portion taken along a plane orthogonal to a light guiding direction of the primary light is larger than that of the first connecting portion.
15. The apparatus according to claim 11, wherein
each of the first and second connecting portions has a connecting function of connecting light guide paths, and
a distance between light guide paths adjacent to each other in the light guide paths in the first connecting portion is configured to be smaller than that in the second connecting portion.
16. The apparatus according to claim 11, wherein
the first connecting portion and the second connecting portion has a waterproof function, and
the waterproof function of the first connecting portion is configured to have a higher level than that of the second connecting portion.
17. The apparatus according to claim 11, wherein
the first connecting portion has resistance against repetition of the attachment and detachment that is different from that of the second connecting portion, and
the second connecting portion is configured to have higher abrasion resisting properties in a contact region that is brought into contact and slid at the time of the attachingdetaching operation than the first connecting portion.
18. The apparatus according to claim 1, wherein the light guide path includes a light guide member having flexibility, and the first connecting portion is provided in the light guide member or provided at an end of the light guide member.
19. The apparatus according to claim 18, wherein the first connecting portion and the second connecting portion are provided on both sides to sandwich the light guide member.
20. The apparatus according to claim 19, wherein the first connecting portion is provided on the light conversion unit side of the light guide member, and the second connecting portion is provided on the primary light source side of the light guide member.