Sphygmomanometer with built-in timer

Claim 2

A sphygmomanometer comprising, in combination with a fluidpressurizable blood-flow-restricting sleeve: an elongated cylindrical housing having a relatively stiff cylindrical core formed with a laterally open hollow over most of the length of the core and housing; hand-actuatable pump means in said housing connectable with said sleeve for pressurizing same, said pump means including a relatively elastic skin over said core spanning said hollow and forming therewith a substantially airtight chamber extending over most of the length of the housing; meter means on an end of said housing and mounted on said core for indicating a fluid-pressure level in said sleeve; a rotatable ring on said housing; and valve means in said housing operable by said rotatable ring for bleeding pressurized fluid from said sleeve.

Claim 3

The sphygmomanometer defined in claim 1 wherein said ring 15 substantially coaxial with said housing at said end thereof and being rotatable about the longitudinal axis of said housing.

Claim 4

The sphygmomanometer defined in claim 2, further comprising airtight connecting means interconnecting said chamber and said sleeve, said housing being provided with a first check valve permitting airflow from the exterior into said chamber and a second check valve permitting airflow from said chamber into said connecting means.

Claim 5

The sphygmomanometer defined in claim 3 wherein said meter means includes sensing means responsive to pressure in said connecting means, and said valve means comprises a controllable valve communicating between the ambient atmosphere and said connecting means.

Claim 6

The sphygmomanometer defined in claim 4 wherein said sensing means includes a closed compartment communicating with said connecting means and having a pressure-displaceable wall, and a double-arm lever having one arm bearing on said wall, said meter means including a pointer, a pivotal shaft carrying said pointer, and means connecting said shaft to the other arm of said lever.

Claim 7

The sphygmomanometer defined in claim 5, further comprising adjustment means between said wall and said one arm for varying the distance therebetween in a nonactuated condition of said sensing means.

Claim 8

The sphygmomanometer defined in claim 6 wherein said adjustment means comprises a stud mounted on said wall and a nut threadedly engaging said stud, said one arm bearing on said nut.

Claim 9

The sphygmomanometer defiNed in claim 7, further comprising a yoke fired to said housing, a pin mounted between the arms of the yoke, and means for displacing said yoke toward and away from said nut, said lever being mounted on said pin.

Claim 10

The sphygmomanometer defined in claim 4 wherein said valve means includes a valve body formed with a first bore open at one end to the ambient atmosphere and a second relatively narrower bore extending between said connecting means and the other end of said first bore, and a valve member for blocking said other end of said first bore.

Claim 11

The sphygmomanometer defined in claim 9 wherein said ring has an inner periphery formed with a camming surface operatively connected with said valve member to force same toward said other end of said first bore to block same.

Claim 12

The sphygmomanometer defined in claim 10 wherein said valve member comprises a resilient body adapted to seat, at said other end, a pair of telescoping portions between said resilient body and said camming surface, and at least one spacer between said portions for varying the effective length of said portions.

Claim 13

The sphygmomanometer defined in claim 1, further comprising timer means actuatable by said rotatable ring for indicating elapsed time.

Claim 14

The sphygmomanometer defined in claim 12 wherein said timer means comprises an actuating lever and operating means connecting said lever to said ring for actuation thereby.

Claim 15

The sphygmomanometer defined in claim 13 wherein said ring is formed with a boss engageable with said operating means.

Claim 16

The sphygmomanometer defined in claim 1, further comprising a bayonet joint between said meter means and said housing.

Claim 17

The sphygmomanometer defined in claim 1, further comprising a threaded joint between said meter means and said housing.

Claim 18

A sphygmomanometer, comprising in combination with a fluid-pressurizable blood-flow-restricting sleeve: an elongated cylindrical housing having a relatively stiff cylindrical core formed with a laterally open hollow over most of its length; hand-actuatable pump means in said housing connectable with said sleeve for pressurizing same, said pump means including a relatively elastic skin over said core spanning said hollow and forming therewith a substantially airtight chamber extending over most of the length of said housing; a meter on an end of said housing for indicating a fluid-pressure level in said sleeve; a bayonet coupling between said meter and said core, said meter and said housing being of the same diameter at said coupling; a rotatable ring surrounding said housing at said end, said ring further overlapping a portion of said meter and a portion of said housing, said ring having an eccentric surface; and a valve in said housing operable by said ring between a first position bleeding said chamber to the atmosphere and a second position isolating said chamber from the atmosphere, said valve including a passage formed in said core and communicating with said sleeve, a port formed in said meter communicating between said passage and the atmosphere, and a valve member shiftable transversely of said housing for blocking said port and engaging said surface.

Claim 19

A sphygmomanometer, comprising in combination with a fluid-pressurizable blood-flow-restricting sleeve: an elongated cylindrical housing having a relatively stiff cylindrical core formed with a laterally open hollow over most of its length; hand-actuatable pump means in said housing connectable with said sleeve for pressurizing same, said pump means including a relatively elastic skin over said core spanning said hollow and forming therewith a substantially airtight chamber extending over most of the length of said housing; a meter on an end of said housing for indicating a fluid-pressure level in said sleeve; a bayonet coupling between said meter and said core, said meter and said housing being of the same diameter at said coupling; a rotatable ring surrounding said housing at said end, said ring further overlapping a portion of said meter and a portion of said housing, said ring having an eccentric surface; and a valve in said housing operable by said ring between a first position bleeding said chamber to the atmosphere and a second position isolating said chamber from the atmosphere, said valve including a passage formed in said core and communicating with said sleeve, a port formed in said meter communicating between said passage and the atmosphere, and a valve member shiftable transversely of said housing for blocking said port and engaging said surface.