Bone gage

Claim 2

A bone gage comprising: means defining a tubular body, hook means connected to and extending longitudinally outwardly from said body and adapted to move between operative and inoperative positions, a measuring sleeve slidably mounted on said body means for relative movement with respect thereto, a scale means operatively associated with said measuring sleeve to measure the amount of relative movement between said sleeve and said body means, locking means for locking and unlocking said measuring sleeve to said body means, and actuating means mounted on said body operatively connected with said hook means providing means whereby said measuring sleeve is locked relative to said body means when said actuating means is operated to render said hook means inoperative, and said measuring sleeve being unlocked and free to slide relative to said body means when said actuating means is actuated to render said hook means operative, said hook means comprising a pair of elongated wires adapted to extend through an opening formed in a bone, jaw means connected to the extended end of said wires, said jaws being normally biased and adapted to positively engage said jaws on the distal edge of said bone, and said actuating means including a sheathing tube means slidably disposed over said wires for movement between extended and retracted positions relative to said body means providing means whereby said sheathing tube in the extended position biases said jaws toward closed position to permit retraction of said gage from the bone.

Claim 3

The invention as defined in claim 1 wherein said locking means includes a drag cam mounted on the tubular body providing means for frictionally maintaining said measuring sleeve secured to said body meanS in the extended position of said sheathing tube.

Claim 4

The invention as defined in Claim 2 wherein said measuring sleeve includes a guide end slidably disposed on said sheathing tube means wherein said guide end is adapted to be moved into engagement with the opposed side of a bone whereby the distance between the jaws and said guide end determines the diameter of a given bone.

Claim 5

The invention as defined in claim 3 wherein said sheathing tube means includes a tube head having a camming surface providing means to effect a camming action on said drag cam in the extended position thereof.

Claim 6

The invention as defined in claim 4 wherein said actuating means includes: a closure head mounted on the end of said body, a push rod connected to said closure head arranged to extend into said body, and a connector interconnecting said push rod with said sheathing tube means whereby the displacement of said sheathing tube means is rendered responsive to the movement of said closure head.

Claim 7

A bone gage comprising: means defining a body, hook means connected to and extending longitudinally outwardly from said body and adapted to move between operative and inoperative positions, a measuring sleeve slidably mounted on said body means for relative movement with respect thereto, a scale means operatively associated with said measuring sleeve to measure the amount of relative movement between said sleeve and said body means, locking means for locking and unlocking said measuring sleeve to said body means, and actuating means mounted on said body operatively connected with said hook means providing means whereby said measuring sleeve is locked relative to said body means when said actuating means is operated to render said hook means inoperative and said measuring sleeve being unlocked and free to slide relative to said body means when said actuating means is actuated to render said hook means operative, said hook means comprising a pair of elongated wires adapted to extend through an opening formed in a bone, jaw means connected to the extended end of said wires, said jaws being normally biased and adapted to positively engage said jaws on the distal edge of said bone, said actuating means including a sheathing tube means slidably disposed over said wires for movement between extended and retracted positions relative to said body means providing means whereby said sheathing tube biases said jaws toward closed position to permit retraction of said gage from the bone, said locking means including a drag cam mounted on the body forming means for frictionally maintaining said measuring sleeve secured to said body in the extended position of said sheathing tube, and said measuring sleeve including a guide end slidably disposed on said sheathing tube means wherein said guide end is adapted to be moved into engagement with the opposed side of a bone whereby the distance between the jaws and said guide end determines the diameter of a given bone, and said sheathing tube means includes a tube head having a camming surface forming means to effect a camming action on said drag cam in the extended position thereof, and said actuating means includes a closure head slidably disposed on the end of said body means, and means interconnecting said closure head with said sheathing tube means.

Claim 8

A bone gage comprising: means defining a body, hook means connected to and extending longitudinally outwardly from said body and adapted to move between operative and inoperative positions, a measuring sleeve slidably mounted on said body means for relative movement with respect thereto, a scale means operatively associated with said measuring sleeve to measure the amount of relative movement between said sleeve and said body means, locking means for locking and unlocking said measuring sleeve to said body means, and actuating means mounted on said body operatively connected with said hook means providing means whereby said measuring sleeve is locked relative to said body means when said actuating means is operated to render said hook means inoperative and said measuring sleeve being unlocked and free to slide relative to said body means when said actuating means is actuated to render said hook means operative, said hook means comprising a pair of elongated wires adapted to extend through an opening formed in a bone, jaw means connected to the extended end of said wires, said jaws being normally biased and adapted to positively engage said jaws on the distal edge of said bone, said actuating means including a sheathing tube means slidably disposed over said wires for movement between extended and retracted positions relative to said body means providing means whereby said sheathing tube biases said jaws toward closed position to permit retraction of said gage from the bone, said locking means including a drag cam mounted on the body forming means for frictionally maintaining said measuring sleeve secured to said body in the extended position of said sheathing tube, and said measuring sleeve including a guide end slidably disposed on said sheathing tube means wherein said guide end is adapted to be moved into engagement with the opposed side of a bone whereby the distance between the jaws and said guide end determines the diameter of a given bone, and said sheathing tube means includes a tube head having a camming surface forming means to effect a camming action on said drag cam in the extended position thereof, and said actuating means includes a closure head slidably disposed on the end of said body means, and means interconnecting said closure head with said sheathing tube means.

Claim 9

A bone gage adapted to extend through a transverse hole formed in a bone for measuring the diameter of the bone comprising: a tubular body, hook means, means connecting said hook means to said body so that an end portion of said hook means extends beyond one end of said body, said hook means including a pair of spring wires each having a laterally turned jaw on the extended end thereof, said spring wires being normally biased so that said jaws are extended, a measuring sleeve having indicia thereon to define a scale, said measuring sleeve telescopically disposed on said body for relative movement with respect thereto, a guide connected to one end of said measuring sleeve through wHich said hook wires extend, a sheathing tube encasing a major length of said extended hook wires, said sheathing tube being extended through the guide end of said sleeve, a tube head having a cam surface connected to the inner end of said sheathing tube, a drag spring mounted on said body, said drag spring have a bent end portion adapted to follow the cam surface of said tube head, said bent end portion being disposed between said body and said measuring sleeve, and said spring having an intermediate drag portion to engage said measuring sleeve to frictionally secure said measuring sleeve to said tubular body when said drag spring is rendered operative, and actuating means movable relative to said body and operatively associated with said drag spring to render said drag spring operative to lock said sleeve to said tubular body when said jaws are biased to closed position and to unlock said sleeve relative to said body when said jaws are biased to open position.

Claim 10

A bone gage adapted to extend through a transverse hole formed in a bone for measuring the diameter of the bone comprising: a tubular body, hook means, means connecting said hook means to said body so that an end portion of said hook means extends beyond one end of said body, said hook means including a pair of spring wires each having a laterally turned jaw on the extended end thereof, said spring wires being normally biased so that said jaws are extended, a measuring sleeve having indicia thereon to define a scale, said measuring sleeve telescopically disposed on said body for relative movement with respect thereto, a guide connected to one end of said measuring sleeve through wHich said hook wires extend, a sheathing tube encasing a major length of said extended hook wires, said sheathing tube being extended through the guide end of said sleeve, a tube head having a cam surface connected to the inner end of said sheathing tube, a drag spring mounted on said body, said drag spring have a bent end portion adapted to follow the cam surface of said tube head, said bent end portion being disposed between said body and said measuring sleeve, and said spring having an intermediate drag portion to engage said measuring sleeve to frictionally secure said measuring sleeve to said tubular body when said drag spring is rendered operative, and actuating means movable relative to said body and operatively associated with said drag spring to render said drag spring operative to lock said sleeve to said tubular body when said jaws are biased to closed position and to unlock said sleeve relative to said body when said jaws are biased to open position.

Claim 11

The invention as defined in claim 7 wherein said actuating means includes: a closure head movably mounted on the end of said body, a push rod connected to said closure head and extending through said body, means interconnecting said tube head with said push rod whereby the movement of said tube head and connected sheathing tube is rendered responsive to the movement of said closure head.

Claim 12

The invention defined in claim 7 wherein said means connecting said hook means to said body includes: a connector disposed within said body, said connector having a first groove formed therein and a second groove, said hook wires having a laterally turned end received in said second groove of said connector, said connector having a bore therein, and said body having opposed openings formed therein aligned with the bore of said connector, and said drag spring having a bent inner end portion extending through the aligned openings in said body and bore of said connector to fixedly secure the connector in position in said tubular body.

Claim 13

A bone gage comprising: a tubular body, a measuring sleeve telescopically mounted on said body for relative sliding movement with respect to said body, hook means connected to said body and extending beyond the ends of said body and telescoping sleeve, said hook means having jaws adapted to move between open and closed position, said jaws being normally biased toward open position, an actuating means on said body operatively associated with said jaws for effecting the opening and closing of said jaws, and means on said body for frictionally locking said sleeve to said body and forming means whereby said sleeve is locked to said body when the jaws are closed and free to slide relative to said body when said jaws are open.

Claim 14

A bone gage comprising: a tubular body, a measuring sleeve telescopically mounted on said body for relative sliding movement with respect to said body, hook means connected to said body and extending beyond the ends of said body and telescoping sleeve, said hook means having jaws adapted to move between open and closed position, said jaws being normally biased toward open position, an actuating means on said body operatively associated with said jaws for effecting the opening and closing of said jaws, and means on said body for frictionally locking said sleeve to said body and forming means whereby said sleeve is locked to said body when the jaws are closed and free to slide relative to said body when said jaws are open.

Claim 15

A bone gage comprising: a tubular body, a measuring sleeve telescopically mounted on said body for relative movement, hook means extending beyond the ends of said body and sleeve, said hook means having jaws adapted to move between open and closed position, an actuating means operatively associated with said jaws for effecting the opening and closing of said jaws, and means for locking said sleeve to said body and forming means whereby said sleeve is locked to said body when the jaws are closed and free to slide relative to said body when said jaws are open, wherein said actuating means includes a closure head movably mounted on the end of said body, a sheathing tube projecting from said body and slidably disposed relative to said hook means to extend between a protracted and retracted position, and means interconnecting said sheathing tube with said closure head whereby the protracting and retracting of said sheathing tube is responsive to the movement of said closure head.

Claim 16

A bone gage comprising: a tubular body, a measuring sleeve telescopically mounted on said body for relative movement, hook means extending beyond the ends of said body and sleeve, said hook means having jaws adapted to move between open and closed position, an actuating means operatively associated with said jaws for effecting the opening and closing of said jaws, and means for locking said sleeve to said body and forming means whereby said sleeve is locked to said body when the jaws are closed and free to slide relative to said body when said jaws are open, wherein said actuating means includes a closure head movably mounted on the end of said body, a sheathing tube projecting from said body and slidably disposed relative to said hook means to extend between a protracted and retracted position, and means interconnecting said sheathing tube with said closure head whereby the protracting and retracting of said sheathing tube is responsive to the movement of said closure head.

Claim 17

The invention as defined in claim 11 wherein said hook means comprises a pair of spring wires, said jaws being connected to the exteNded end of said wires whereby said jaws are normally spring urged toward open position, and said sheathing tube in the extended position thereof effects a biasing of said jaws to closed position.

Claim 18

The invention as defined in claim 11 wherein said locking means includes: a drag spring mounted on said body, and disposed between said body and said sleeve, and cam means operatively associated with said sheathing tube to provide means effecting a camming of said drag spring into locking and unlocking position of said sleeve relative to said body as said sheathing tube is protracted and retracted accordingly.