Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
174 words
A device for anchoring a crucial ligament transplant in the knee joint parts,
characterised by a generally cylindrical sleeve (30) of metallic, bio-compatible material, with at
least two axis-parallel slots (50) which are distanced in the circumferential
direction and which extend from one end over a larger length of the sleeve
(30), with a roughening (42) of a sleeve section in the region of the slots (50),
with a head (38) at the other end of the sleeve (30) and with an inner threaded
section (56) which extends from the head (38) up to into the region of the slots
(50), wherein the connecting section (58) of the sleeve bore (54) has a
diameter which is equal or smaller than the tip diameter of the inner threaded
section (56), and by a screw (34) with a threaded shank (62) which is screwable into the inner
thread (54) and with a head (60) at one end of the shank (62), wherein the
length of the shank (62) is smaller than that of the sleeve (30).
Claim 2
Dependent Claim
16 words
A device according to claim 1, characterised in that the sleeve (30) is formed of
titanium.
Claim 3
Dependent Claim
27 words
A device according to claim 1 or 2, characterised in that the roughening is formed
by annular ribs (44) concentric to the axis of the sleeve (30).
Claim 4
Dependent Claim
23 words
A device according to claim 3, characterised in that the annular ribs are shaped
such that in section there results a sawtooth-like course.
Claim 5
Independent Claim
31 words
A device according to one of the claims 1 to 4, characterised in that the sleeve (30)
between the head (38) and the roughening (42) comprises a smooth outer section
(40).
Claim 6
Dependent Claim
20 words
A device according to claim 1 and 5, characterised in that the slots (50) extend into
the smooth section (40).
Claim 7
Independent Claim
23 words
A device according to claims 1 to 6, characterised in that there we provided four
slots (50) at a circumferential distance of 90°.
Claim 8
Independent Claim
28 words
A device according to one of claims 1 to 7, characterised in that the head (38, 60)
of the sleeve (30) and/or screw (34) is a polygonal head.
Claim 9
Independent Claim
29 words
A device according to one of the claims 1 to 8, characterised in that diameter of the
screw head (60) is smaller than that of the sleeve head (38).
Claim 10
Independent Claim
29 words
A device according to one of claims 1 to 9, characterised in that the sleeve (30) has
a length of 26 to 30 mm, preferably of about 28 mm.
Claim 11
Independent Claim
28 words
A device according to one of the claims 1 to 10, characterised in that the sleeve has
a diameter of 4 to 6 mm, preferably of 5 mm.
Claim 12
Independent Claim
39 words
A device according to one of claims 1 to 11, characterised in that on the outer side
of the head (38) there is provided a marking (52) which has a fixed relation to the
position of the slot (50).