Patent GB544114A successfully refreshed from Google Patents.
GB2252732A
Expired / Lapsed
GB
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Bone fracture repair apparatus
Assignee: Individual
•
Filing: 1991-10-16
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Granted: —
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Expires: 2011-10-16
Abstract
Abstract The apparatus comprises a guide having three parallel elongate bores, two of which 15, 16 are small diameter for receiving a guide wire and one of which 14 is of larger diameter for receiving and guiding a screw. By employing a guide wire in a small diameter bore to locate the guide, screws can be inserted in substantially parallel disposition using the larger diameter bore as a guide and using the guide wire as a pivot to change the position for insertion of a screw. A guide anchoring pin may be used to secure the guide against rotation and a drill 22 having a sleeve 24 may be employed in the bore 14, the sleeve having an outer diameter which permits a guiding fit in the bore and limits the cutting depth of the drill. At least one further elongate bore of smaller diameter may be provided. <IMAGE>
Inventors
- 👤 Kannivellu Badrinath
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 04:09
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1721; A61B17/56; A61B17/58; A61B17/68; A61B17/74; A61B17/742
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
38 words
A bone fracture repair apparatus, comprising a guide having three parallel elongate bores two of which are small diameter for receiving a guide wire and one of which is of larger diameter for receiving and guiding a screw.
Claim 2
Dependent Claim
38 words
A bone fracture repair apparatus, comprising a guide having three parallel elongate bores two of which are small diameter for receiving a guide wire and one of which is of larger diameter for receiving and guiding a screw.
Claim 3
Dependent Claim
33 words
A bone fracture repair apparatus as claimed in claim 1, including a pair of guide wires of diameter which permits a snug sliding fit in said bores of smaller diameter of the guide.
Claim 4
Dependent Claim
56 words
A bone fracture repair apparatus as claimed in claim 1 or 2, including a second guide of elongate substantially cylindrical cross section having an outer diameter which permits a snug sliding fit in said bore of larger diameter of the guide and an inside diameter substantially equal to the diameter of said bores of smaller diameter.
Claim 5
Dependent Claim
82 words
A bone fracture repair apparatus as claimed in claim 3, wherein the second guide is of length greater than the length of the guide and is cut away at or towards one end to reveal the inside of the bore and is calibrated adjacent the revealed portion of the bore, and one of the guide wires is provided with a marker for cooperation with the calibration to indicate the extent by which the guide wire extends beyond the end of the guide.
Claim 6
Dependent Claim
61 words
A bone fracture repair apparatus as claimed in any one of the preceding claims, including a-guide anchoring pin having a portion of length greater than the length of the guide and of diameter which permits a close sliding fit within said bores of smaller diameter and a portion of larger diameter which limits the extension of the pin beyond the bone.
Claim 7
Dependent Claim
72 words
A bone fracture repair apparatus as claimed in any one of the preceding claims, including a drill of length longer than the guide, of diameter greater than that of the guide wires but substantially less than the diameter of said bore of larger diameter which drill has a sleeve the outer diameter of which permits a guiding fit in said bore of larger diameter and limits the cutting depth of the drill.
Claim 8
Dependent Claim
73 words
A bone fracture repair apparatus as claimed in claim 6, including a tap, of length greater than the length of the guide, of diameter greater than the diameter of the drill but less than the diameter of said bore of larger diameter, which tap has a sleeve the outer diameter of which permits a guiding fit in said bore of larger diameter and is adjustable to determine the limit of threaded depth cut.
Claim 9
Dependent Claim
32 words
A bone fracture repair apparatus as claimed in any one of the preceding claims, including at least one additional elongate bore of said small diameter parallel to said three parallel elongate bores.
Claim 10
Dependent Claim
31 words
A bone fracture repair apparatus as claimed in any one of the preceding claims, wherein the guide is formed from individual cylindrical tubes secured together in parallel side by side disposition.
Claim 11
Dependent Claim
29 words
A bone fracture repair apparatus as claimed in any one of the preceding claims, wherein the guide comprises a
solid bar with the parallel elongate bores formed
there through.
Claim 12
Dependent Claim
18 words
A bone fracture repair apparatus as claimed in
claim 10, wherein the solid bar is of oval cross-section.
Claim 13
Dependent Claim
14 words
A bone fracture repair apparatus substantially as
described herein with reference to the drawings.
Claim 14
Dependent Claim
14 words
A bone fracture repair apparatus substantially as
described herein with reference to the drawings.
Claim 15
Independent Claim
80 words
A method of bone fracture repair in which a
plurality of screws are inserted in substantially parallel
disposition by employing a guide having a plurality of
parallel bores at least one of which is of small diameter
and is located on a guide wire of similar diameter inserted
substantially centrally through the fracture so as to define
the inclination of the screws which are inserted through
another one of the bores of larger diameter which serves to
guide the screws.
Claim 16
Independent Claim
80 words
A method of bone fracture repair in which a
plurality of screws are inserted in substantially parallel
disposition by employing a guide having a plurality of
parallel bores at least one of which is of small diameter
and is located on a guide wire of similar diameter inserted
substantially centrally through the fracture so as to define
the inclination of the screws which are inserted through
another one of the bores of larger diameter which serves to
guide the screws.
Claim 17
Dependent Claim
56 words
A method of bone fracture repair as claimed in
claim 13, in which the guide comprises three bores two of
which are of said small diameter and wherein an anchoring
pin is inserted through the second of the two smaller bores
into the bone to secure the guide against rotation prior to insertion of each screw.
Claim 18
Independent Claim
277 words
A method of repairing a bone fracture comprising the steps of:
(a) driving a first guide wire substantially centrally of the bone through the fracture, (b) sliding onto the first guide wire a guide comprising three parallel elongate bores, two of which are small diameter substantially equal to the diameter of the guide wire and one of which is of larger diameter, by sliding a small bore of the guide over the first guide wire, (c) rotating the guide around this first guide wire so that the bore of larger diameter is directed towards a suitable area to receive a screw, (d) introducing into the bore of larger diameter a second guide of elongate substantially cylindrical cross section having an outer diameter which permits a snug sliding fit in the bore, and an inside diameter substantially equal to the diameter of said bores of smaller diameter, (e) driving a guide wire into the bone through the bore of the second guide and the fracture to a required depth as defined by a monitoring means, (f) noting the required depth, (g) passing a guide anchoring pin through the other bore of small diameter into the bone to secure the guide against rotation, (h) removing the guide wire and second guide from the bore of larger diameter, (i) inserting a screw of length equal to said noted depth through the bore of larger diameter and driving it into the bone, (j) removing the guide anchoring pin, (k) rotating the guide around the first guide wire so that the bore of larger diameter is directed towards another suitable area to receive a screw, and (1) repeat steps (d) to (j).
Claim 19
Independent Claim
277 words
A method of repairing a bone fracture comprising the steps of:
(a) driving a first guide wire substantially centrally of the bone through the fracture, (b) sliding onto the first guide wire a guide comprising three parallel elongate bores, two of which are small diameter substantially equal to the diameter of the guide wire and one of which is of larger diameter, by sliding a small bore of the guide over the first guide wire, (c) rotating the guide around this first guide wire so that the bore of larger diameter is directed towards a suitable area to receive a screw, (d) introducing into the bore of larger diameter a second guide of elongate substantially cylindrical cross section having an outer diameter which permits a snug sliding fit in the bore, and an inside diameter substantially equal to the diameter of said bores of smaller diameter, (e) driving a guide wire into the bone through the bore of the second guide and the fracture to a required depth as defined by a monitoring means, (f) noting the required depth, (g) passing a guide anchoring pin through the other bore of small diameter into the bone to secure the guide against rotation, (h) removing the guide wire and second guide from the bore of larger diameter, (i) inserting a screw of length equal to said noted depth through the bore of larger diameter and driving it into the bone, (j) removing the guide anchoring pin, (k) rotating the guide around the first guide wire so that the bore of larger diameter is directed towards another suitable area to receive a screw, and (1) repeat steps (d) to (j).
Claim 20
Dependent Claim
50 words
A method as claimed in claim 15, wherein step (i) includes the introduction into the bore of larger diameter a drill having a sleeve which is a close sliding fit inside the bore and which limits the depth of initial drilling into the bone to facilitate insertion of the screw.
Claim 21
Dependent Claim
59 words
A method as claimed in claim 16, wherein step (i) further includes, following the predrilling of the bone, the introduction into the bore of larger diameter a tap having a sleeve which is a close sliding fit inside the bore and which limits the depth of pretapping of a thread into the bone prior to insertion of the screw.
Claim 22
Independent Claim
44 words
A method of repair of fracture of the neck of the femur as claimed in any one of claims 13 to 17, in which the guide wire is inserted through an incision into the head of
the femur passing substantially centrally through the neck.
Claim 23
Dependent Claim
36 words
A method as claimed in claim 18, wherein in step
(c) the guide is rotated so that the bore of larger diameter
is directed towards the antero - inferior part of the neck
of the femur.
Claim 24
Dependent Claim
29 words
A method as claimed in claim 19, wherein in step
(g) the anchoring pin is driven into the outer cortex of the
femur to secure the guide against rotation.
Claim 25
Independent Claim
15 words
A method of bone fracture repair substantially as
described herein with reference to the drawings.
Claim 26
Independent Claim
15 words
A method of bone fracture repair substantially as
described herein with reference to the drawings.
References Cited (Backward Citations)
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