US6077264A — Intramedullary nail for the osteosynthesis of bon…

Claim 1

Independent Claim 303 words

Intramedullary nail to be used in orthopedics for insertion into a bone comprising: a tubular body having an interior and including at least one anchoring device slidably moveable within the interior thereof; a maneuvering element for said anchoring device housed within the tubular body; and a drilled bushing at the top end of said nail; wherein said tubular body is substantially cylindrical and has a parallelopiped shaped top end and a threaded interior portion at said top end; wherein said at least one anchoring device has a substantially cylindrical body formed with an cylindrical surface and having two or more longitudinal cavities formed therein, and the body has a plurality of slots, one each, corresponding to each of said cavities, a hook having an arched tip located in each cavity, each of said cavities being shaped for housing a corresponding one of the hooks with the arched tip pointed towards the exterior surface of the tube and facing a corresponding slot positioned on the cylindrical surface of said tubular body, each hook being movable with respect to the cavity into and out of the corresponding slot during the slidable movement of the anchoring device with respect to the tubular body; wherein said maneuvering element, housed within the tubular body is operated for, longitudinal sliding in two opposite directions of said at least one anchoring device, causing each hook to extend through the corresponding slot exterior of the tubular body; and wherein said drilled bushing slides without rotation with respect to the top end of said tubular body and has at least one arched lip for the contact with the bone in which said nail is inserted, a threaded screw having a head resting on the bushing, said bushing cooperating with the screw and threadably engaging the threadable interior portion of the tubular body.

Claim 2

Dependent Claim 303 words

Intramedullary nail to be used in orthopedics for insertion into a bone comprising: a tubular body having an interior and including at least one anchoring device slidably moveable within the interior thereof; a maneuvering element for said anchoring device housed within the tubular body; and a drilled bushing at the top end of said nail; wherein said tubular body is substantially cylindrical and has a parallelopiped shaped top end and a threaded interior portion at said top end; wherein said at least one anchoring device has a substantially cylindrical body formed with an cylindrical surface and having two or more longitudinal cavities formed therein, and the body has a plurality of slots, one each, corresponding to each of said cavities, a hook having an arched tip located in each cavity, each of said cavities being shaped for housing a corresponding one of the hooks with the arched tip pointed towards the exterior surface of the tube and facing a corresponding slot positioned on the cylindrical surface of said tubular body, each hook being movable with respect to the cavity into and out of the corresponding slot during the slidable movement of the anchoring device with respect to the tubular body; wherein said maneuvering element, housed within the tubular body is operated for, longitudinal sliding in two opposite directions of said at least one anchoring device, causing each hook to extend through the corresponding slot exterior of the tubular body; and wherein said drilled bushing slides without rotation with respect to the top end of said tubular body and has at least one arched lip for the contact with the bone in which said nail is inserted, a threaded screw having a head resting on the bushing, said bushing cooperating with the screw and threadably engaging the threadable interior portion of the tubular body.

Claim 3

Dependent Claim 56 words

The intramedullary nail according to claim 1, wherein each hook has a proximal end opposite the tip and each cavity has a radial hole for receiving the proximate end therein, and during movement of each hook through the corresponding slot each hook lifts from the cavity while the proximal end remains located in the radial hole.

Claim 4

Dependent Claim 73 words

The intramedullary nail according to claim 1, wherein the maneuvering element comprises a threaded rod having first and second oppositely threaded portions, the first portion having a diameter larger than the second portion, the second threaded portion for threadably engaging a threaded hole at the end of the anchoring device, the first threaded portion for threadably engaging the threaded portion of the tubular body; and an axial opening for receiving a maneuvering spanner.

Claim 5

Dependent Claim 14 words

The intramedullary nail according to claim 1 wherein the body has a transverse hole.

Claim 6

Dependent Claim 34 words

The intramedullary nail according to claim 1 including at least two of said anchoring devices being positioned in opposite directions, so that the respective hooks extend in opposite directions with respect to one another.

Claim 7

Dependent Claim 32 words

The intramedullary nail according to claim 1 wherein the tubular body has a lower end with an opening therein, and wherein a closing plug is located in said opening in lower end.

Claim 8

Dependent Claim 24 words

The intramedullary nail according to claim 1 wherein the bushing comprises an expansion washer formed with two symmetrical lips for resting on the bone.

Claim 9

Dependent Claim 34 words

The intramedullary nail according to claim 1 wherein the bushing comprises a plate in the form of a substantially flat longitudinal rod secured by the screw to the top end of the tubular body.

Claim 10

Dependent Claim 42 words

The intramedullary nail according to claim 1 including a second nail, and having a transverse hole through which said second nail is inserted, and a rod located in longitudinal impressions in a surface of the hole and a surface of said nail.

Claim 11

Dependent Claim 35 words

The intramedullary nail according to claim 9 including another anchoring device positioned in an opposite direction to the first mentioned anchoring device, so that the respective hooks extend from the tubular body in opposite directions.

Claim 12

Dependent Claim 15 words

The intramedullary nail according to claim 9 including a closing plug at the distal end.

Claim 13

Dependent Claim 14 words

The intramedullary nail according to claim 1 wherein the bushing comprises a flat plate.

Claim 14

Dependent Claim 17 words

The intramedullary nail according to claim 1 wherein the bushing comprises a washer with two symmetrical lips.

Claim 15

Dependent Claim 256 words

An intramedullary orthopedics nail comprising: a tubular body having an interior cavity, proximal and distal ends and at least two slots near the distal end; at least one anchoring device within the interior cavity in the form of a substantially cylindrical body axially slidable in the interior cavity near the slots in the distal end and having at least two longitudinal cavities each one of said longitudinal cavities being associated with a corresponding one of said slots; an arc shaped hook for each longitudinal cavity, each having a pointed tip end engaging the corresponding slot and extending in a direction outwardly of the tubular body and, said hook being movable inwardly and outwardly of the tubular body with movement of the cylindrical body within the longitudinal cavity, each hook has a radially extending proximal end and the cylindrical body has a corresponding radial opening at the proximal end of the cavity for receiving the end of the hook in bearing relationship; a rotatable maneuvering element, axially located within the tubular body secured to a proximal end of the anchoring device operative for sliding the body in opposite directions axially within the longitudinal cavity towards and away from the distal end, causing respective extension and withdrawal of the hooks through the slots in the tubular body; a bushing secured to a proximal end of the maneuvering element at the corresponding end of the tubular body being slidable thereon and secured thereto without rotation, said bushing including at least one outwardly extending arched lip at said proximal end.

Claim 16

Dependent Claim 256 words

An intramedullary orthopedics nail comprising: a tubular body having an interior cavity, proximal and distal ends and at least two slots near the distal end; at least one anchoring device within the interior cavity in the form of a substantially cylindrical body axially slidable in the interior cavity near the slots in the distal end and having at least two longitudinal cavities each one of said longitudinal cavities being associated with a corresponding one of said slots; an arc shaped hook for each longitudinal cavity, each having a pointed tip end engaging the corresponding slot and extending in a direction outwardly of the tubular body and, said hook being movable inwardly and outwardly of the tubular body with movement of the cylindrical body within the longitudinal cavity, each hook has a radially extending proximal end and the cylindrical body has a corresponding radial opening at the proximal end of the cavity for receiving the end of the hook in bearing relationship; a rotatable maneuvering element, axially located within the tubular body secured to a proximal end of the anchoring device operative for sliding the body in opposite directions axially within the longitudinal cavity towards and away from the distal end, causing respective extension and withdrawal of the hooks through the slots in the tubular body; a bushing secured to a proximal end of the maneuvering element at the corresponding end of the tubular body being slidable thereon and secured thereto without rotation, said bushing including at least one outwardly extending arched lip at said proximal end.

Claim 17

Dependent Claim 33 words

The intramedullary nail according to claim 14 wherein the maneuvering element comprises a rod having a threaded portion for engaging a corresponding threaded portion within the tubular body and a non-cylindrical proximal end.

Claim 18

Dependent Claim 25 words

The intramedullary nail according to claim 15 wherein the tubular cavity has a selected diameter and the maneuvering element has an unthreaded portion slidable therein.

Claim 19

Dependent Claim 30 words

The intramedullary nail according to claim 15 wherein the maneuvering element has a threaded distal end with a reduced diameter for engaging a corresponding threaded opening in the cylindrical body.

Claim 20

Dependent Claim 19 words

The intramedullary nail according to claim 14 having a transverse hole and a screw for locking the maneuvering element.

Claim 21

Dependent Claim 23 words

The intramedullary nail according to claim 14 wherein the top end of the body coupled with the drilled bushing has a parallelepiped shape.

Claim 22

Dependent Claim 254 words

An intramedullary orthopedics nail comprising: a tubular body having an interior cavity, proximal and distal ends and at least two slots near the distal end; at least one anchoring device within the interior cavity in the form of a substantially cylindrical body axially slidable in the interior cavity near the slots in the distal end and having at least two longitudinal cavities, each one of said longitudinal cavities being associated with a corresponding one of said slots; an arc shaped hook for each longitudinal cavity, each having a pointed tip end engaging the corresponding slot and extending in a direction outwardly of the tubular body and, said hook being movable inwardly and outwardly of the tubular body with movement of the cylindrical body within the longitudinal cavity, each hook having a proximal end and the cylindrical body has a corresponding bearing surface at the proximal end of the cavity for receiving the end of the hook in bearing relationship; a rotatable maneuvering element, axially located within the tubular body secured to a proximal end of the anchoring device operative for sliding the body in opposite directions axially within the longitudinal cavity towards and away from the distal end, causing respective extension and withdrawal of the hooks through the slots in the tubular body; a bushing secured to a proximal end of the maneuvering element at the corresponding end of the tubular body being slidable thereon and secured thereto without rotation, said bushing including at least one outwardly extending arched lip at said proximal end.

Claim 23

Dependent Claim 254 words

An intramedullary orthopedics nail comprising: a tubular body having an interior cavity, proximal and distal ends and at least two slots near the distal end; at least one anchoring device within the interior cavity in the form of a substantially cylindrical body axially slidable in the interior cavity near the slots in the distal end and having at least two longitudinal cavities, each one of said longitudinal cavities being associated with a corresponding one of said slots; an arc shaped hook for each longitudinal cavity, each having a pointed tip end engaging the corresponding slot and extending in a direction outwardly of the tubular body and, said hook being movable inwardly and outwardly of the tubular body with movement of the cylindrical body within the longitudinal cavity, each hook having a proximal end and the cylindrical body has a corresponding bearing surface at the proximal end of the cavity for receiving the end of the hook in bearing relationship; a rotatable maneuvering element, axially located within the tubular body secured to a proximal end of the anchoring device operative for sliding the body in opposite directions axially within the longitudinal cavity towards and away from the distal end, causing respective extension and withdrawal of the hooks through the slots in the tubular body; a bushing secured to a proximal end of the maneuvering element at the corresponding end of the tubular body being slidable thereon and secured thereto without rotation, said bushing including at least one outwardly extending arched lip at said proximal end.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2003-06-20	2003-12-20	2004-06-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2007-06-20	2007-12-20	2008-06-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2011-06-20	2011-12-20	2012-06-20	$7700.00	Window Closed / Lapsed

Intramedullary nail for the osteosynthesis of bone fractures

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