Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
200 words
A prosthetic device for providing an articulated joint between a pair of human or animal bones comprising: a first prosthetic fixture having a head portion and a fixation stem extending therefrom, said fixation stem and at least a part of the head portion of the first fixture being adapted to be fitted into one of said bones and fixedly attached thereto, the head portion of said first fixture comprising a shaft, bearing means for supporting said shaft for rotation about a single axis, and oppositely facing members between which the central portion of said shaft is positioned, and a second prosthetic fixture having a head portion and a fixation stem, said fixation stem and at least a part of the head portion of the second fixture being adapted to be fitted into the other of said bones and fixedly attached thereto, the head portion of the second fixture being removably fitted between the oppositely facing members of the head portion of the first fixture in engagement with the shaft for movement therewith, said second fixture head including means removably engaging said shaft for easy detachment therefrom while said central portion of the shaft remains positioned between said oppositely facing members.
Claim 2
Dependent Claim
200 words
A prosthetic device for providing an articulated joint between a pair of human or animal bones comprising: a first prosthetic fixture having a head portion and a fixation stem extending therefrom, said fixation stem and at least a part of the head portion of the first fixture being adapted to be fitted into one of said bones and fixedly attached thereto, the head portion of said first fixture comprising a shaft, bearing means for supporting said shaft for rotation about a single axis, and oppositely facing members between which the central portion of said shaft is positioned, and a second prosthetic fixture having a head portion and a fixation stem, said fixation stem and at least a part of the head portion of the second fixture being adapted to be fitted into the other of said bones and fixedly attached thereto, the head portion of the second fixture being removably fitted between the oppositely facing members of the head portion of the first fixture in engagement with the shaft for movement therewith, said second fixture head including means removably engaging said shaft for easy detachment therefrom while said central portion of the shaft remains positioned between said oppositely facing members.
Claim 3
Dependent Claim
36 words
The prosthetic device of claim 1 wherein the head portions and stems of said first and second fixtures are shaped and sized for fitting cavities formed in the central portions of the femur and tibia bones.
Claim 4
Dependent Claim
22 words
The prosthetic device of claim 1 wherein the heat portion of the second fixture comprises a slotted part which engages said shaft.
Claim 5
Dependent Claim
30 words
The prosthetic device of claim 3 wherein said shaft has a right angled cross section, said slotted part being right angled to fit over said shaft in mating engagement therewith.
Claim 6
Dependent Claim
39 words
The prosthetic device of claim 1 wherein said bearing means for supporting the shaft comprises a pair of bearing members, said bearing members being removably supported on the oppositely facing members of the head portion of the first fixture.
Claim 7
Dependent Claim
16 words
The prosthetic device of claim 5 wherein said bearing members are of a low-friction low-wear material.
Claim 8
Dependent Claim
50 words
The prosthetic device of claim 1 wherein the members of the head portion of the first fixture have arcuate outer surfaces, and further including a pair of bearing blocks attached to said second fixture having arcuate bearing surfaces which mate with the arcuate surfaces of said members and ride thereon.
Claim 9
Dependent Claim
17 words
The prosthetic device of claim 7 wherein said bearing blocks are removably attached to said second fixture.
Claim 10
Dependent Claim
60 words
The prosthetic device of claim 1 wherein the head portion of the second fixture comprises an arm with a pin extending therefrom, said shaft having an aperture formed therein for receiving said pin for axial rotational movement therein, said arm having freedom of limited axial rotational movement between the opoositely facing members of the head portion of said first fixture.