231 results about "Cross pin" patented technology

A method of reconstructing a ruptured anterior cruciate ligament in a human knee. Femoral and tibial tunnels are drilled into the femur and tibia. A transverse tunnel is drilled into the femur to intersect the femoral tunnel. A filamentary loop is threaded through the femoral tunnel and tibial tunnel and partially through the transverse tunnel. A replacement graft is formed into a loop and moved into the tibial tunnels using a surgical needle and suture. A flexible filamentary member is simultaneously moved along with the loop into the femoral and transverse tunnels. The filamentary member is used as a guide wire in the transverse tunnel to insert a cannulated cross-pin to secure a top of the looped graft in the femoral tunnel.

An expandable interspinous process spacer implant for insertion and / or implantation between a spinous process of a superior vertebral body and a spinous process of an inferior vertebral body, the implant comprising multiple pairs of legs joined in a scissor-like fashion and pivotally coupled to each other by one or more pins, where each leg has multiple slots along its longitudinal axis. The implant further may include a pair of bearing surfaces coupled between the legs via cross pins and a first plate and second plate each of which is coupled to a pair of roller pins disposed between a pair of slots on the legs where rotation of a fastener in the fastener holes of the first and second plate results in the first plate and the second plate being drawn toward each other causing the expansion of the height of the implant.

A two piece graft fixation arrangement includes a graft block engageable with a graft and a transverse member engageable with the graft block to fix the graft block in a bone tunnel. Instruments and methods are presented for installing a graft in a bone tunnel and anchoring the graft with a transverse member placed through a transverse bore intersecting the bone tunnel.

A method and apparatus for fixing a ligament in a bone tunnel by cross-pinning the ligament in the bone tunnel.

A two piece graft fixation arrangement includes a graft block engageable with a graft and a transverse member engageable with the graft block to fix the graft block in a bone tunnel. Instruments and methods are presented for installing a graft in a bone tunnel and anchoring the graft with a transverse member placed through a transverse bore intersecting the bone tunnel.

An apparatus and method for performing a surgery, especially an ACL replacement surgery, where a flexible strand insertion rod co-operates with a U-Guide apparatus to insert a flexible strand into a tunnel formed in a bone portion and to guide a pair of drill points to form a pair of tunnels transversely to the tunnel of the insertion rod. The drill points are guided through the insertion rod and the flexible strand is held over the drill points as the transverse tunnels are formed. The insertion rod is then removed from the tunnels formed in the bone and the flexible strand is held looped over the second drill point. Subsequently, a soft tissue replacement is affixed to one end of the flexible strand and pulled over up to the first drill point with the other end of the flexible strand. The first drill point is then used to pull a cross pin through the transverse tunnel to hold the looped end of the soft tissue replacement in place. Finally, the two free ends of the soft tissue replacement are affixed to the bone completing the implantation of a soft tissue replacement.

A method and apparatus for fixing a ligament in a bone tunnel by cross-pinning the ligament in the bone tunnel.

A spring loaded quick release pin and tubular receiver with a retainer pin configured to secure the quick release pin in a shackle, clevis, yoke or forked rod end. The receiver is welded to a shackle or cast with the shackle as a single body. One end of the quick release pin has aligned J slots that engage the retainer pin positioned in the receiver with a clockwise twist. The other end of the quick release pin has a cap and a spring loaded sleeve that biases the cross pin against outside of the second leg of the shackle. The spring bias keeps the short leg of the J slot engaged with the retaining pin. The quick release pin is removed with a push and counter clockwise twist. The invention includes a kit with a receiver, a bushing and a quick release pin for installing or retrofitting existing shackles.

A method of reconstructing a ruptured anterior cruciate ligament in a human knee. Femoral and tibial tunnels are drilled into the femur and tibia. A transverse tunnel is drilled into the femur to intersect the femoral tunnel. A filamentary loop is threaded through the femoral tunnel and tibial tunnel and partially through the transverse tunnel. A replacement graft is formed into a loop and moved into the tibial tunnels using a surgical needle and suture. A flexible filamentary member is simultaneously moved along with the loop into the femoral and transverse tunnels. The filamentary member is used as a guide wire in the transverse tunnel to insert a cannulated cross-pin to secure a top of the looped graft in the femoral tunnel.

A fastening system to press together 2 work pieces. These are plates with a circular aperture on each plate. The first work piece is engaged to the second work piece through a biased engagement. The receptacle assembly consists of a housing and its mechanical contents attached to the first work piece. The bolt assembly consists of a cylindrical bolt with a head and a shank attached and captured thru a retaining bracket to the second work piece and is moveable with respect to the receptacle assembly between the extended and retracted position. Two or more disc springs inside the housing bias the fastener toward the locked position with a biasing force. The bolt fastener has 2 opposing spiral cam slots machined on its shank and when introduced into the pin ring, inside the housing, will engage 2 radial placed cross-pins in its cam slots. Said cross-pins are seated in the pin ring. When the bolt fastener is rotated from the extended position to the retracted position it will lift the cross-pins and with it the pin ring against the disc springs and compressing them so as to provide a biasing force to press the first work piece in engagement with the second work piece.

A differential assembly that includes a differential casing, which is rotatable about an axis, and a pair of side gears that are disposed within the differential casing. First, second, third and fourth pairs of pinion bores are formed in the differential casing and pairs of pinion gears are slidably and rotatably disposed in a respective pair of the pinion bores. A window opening is formed in the differential casing between the first and fourth pair of pinion gears. The second pair of pinion bores are radially offset an equivalent distance from the first and third pair of pinion bores. The differential assembly incorporates a cross pin configured to limit inward movement of a pair of axle shafts and a spacer that limits inward movement of the side gears.

A spring loaded quick release pin and tubular receiver with a retainer pin configured to secure the quick release pin in a shackle, clevis, yoke or forked rod end. The receiver is welded to a shackle or cast with the shackle as a single body. One end of the quick release pin has aligned J slots that engage the retainer pin positioned in the receiver with a clockwise twist. The other end of the quick release pin has a cap and a spring loaded sleeve that biases the cross pin against outside of the second leg of the shackle. The spring bias keeps the short leg of the J slot engaged with the retaining pin. The quick release pin is removed with a push and counter clockwise twist. The invention includes a kit with a receiver, a bushing and a quick release pin for installing or retrofitting existing shackles.

Methods and devices are provided for implanting a cross-pin through a bone tunnel, such as in an arthroscopic surgical procedure. In general, the methods and devices allow a cross-pin hole to be formed in a medial side of a knee bone such that it intersects a bone tunnel formed in the knee bone. In one embodiment, a cross-pinning guide device is provided that can be configured to angularly position the cross-pin hole relative to the bone tunnel to allow the cross-pin hole to intersect the bone tunnel without passing through another side, e.g., a lateral side, of the knee bone. The knee bone can be a femur or a tibia such that the cross-pin hole and the bone tunnel can each be entirely formed in the femur or in the tibia.

A method of reconstructing a ruptured anterior cruciate ligament in a human knee. Femoral and tibial tunnels are drilled into the femur and tibia. A transverse tunnel is drilled into the femur to intersect the femoral tunnel. A replacement graft is formed into a loop and moved into the femoral and tibial tunnels using a surgical needle and suture. A flexible filamentary member is simultaneously moved along with the loop into the femoral and transverse tunnels. The filamentary member is used as a guide wire in the transverse tunnel to insert a cannulated cross-pin to secure a top of the looped graft in the femoral tunnel.

An apparatus and method for performing a surgery, especially an Anterior Cruciate Ligament replacement surgery, where a flexible strand insertion rod cooperates with a U-Guide apparatus to insert a flexible strand into a tunnel formed in a bone portion and to guide a drill point to form a tunnel transversely to the tunnel of the insertion rod. The drill point is guided through the insertion rod and the flexible strand is held over the drill point as the transverse tunnel is formed. The insertion rod is then removed from the tunnels formed in the bone and the flexible strand is held looped over the drill point. Subsequently, a soft tissue replacement is affixed to one end of the flexible strand and pulled over the drill point with the other end of the flexible strand. The drill point is then used to pull a cross pin through the transverse tunnel to hold the looped end of the soft tissue replacement in place. Finally, the two free ends of the soft tissue replacement are affixed to the bone completing the implantation of a soft tissue replacement.

A two piece graft fixation arrangement includes a graft block engageable with a graft and a transverse member engageable with the graft block to fix the graft block in a bone tunnel. Instruments and methods are presented for installing a graft in a bone tunnel and anchoring the graft with a transverse member placed through a transverse bore intersecting the bone tunnel.

A graft ligament for cross-pinning in a bone tunnel, the ligament comprising a tendon having first, second and third portions in series along the length thereof. The first and third portions are provided with cross-sectional thicknesses less than the cross-sectional thickness of the second portion. The tendon first and third portions are folded over and attached to the second portion to provide a graft ligament having a substantially uniform thickness along the length thereof.

In one aspect of the invention, a cross-pin includes a distal portion having an axis, a distal end, and a proximal end. A proximal cylindrical portion includes a threaded exterior surface. A junction may be interposed between the distal and proximal portions to enable the proximal portion to rotate relative to the distal portion. In another aspect of the invention, a graft retaining system for retaining a graft in a bone tunnel includes a graft block having a proximal end and a distal end, and sized to fit within the bone tunnel. A cross pin transverse to the bone tunnel attaches the graft block adjacent the tunnel. An intermediate connector is attached to the graft block at a point distal to the cross pin and connects the graft to the graft block so as to apply compressive forces to the graft block.

Methods and devices are provided for implanting a cross-pin through a bone tunnel, such as in an arthroscopic surgical procedure. In general, the methods and devices allow a cross-pin hole to be formed in a medial side of a knee bone such that it intersects a bone tunnel formed in the knee bone. In one embodiment, a cross-pinning guide device is provided that can be configured to angularly position the cross-pin hole relative to the bone tunnel to allow the cross-pin hole to intersect the bone tunnel without passing through another side, e.g., a lateral side, of the knee bone. The knee bone can be a femur or a tibia such that the cross-pin hole and the bone tunnel can each be entirely formed in the femur or in the tibia.

A rotor blade for wind energy plants with a multiplicity of cross bores running transversely to the longitudinal axis of the rotor blade in the region of the blade base, which are provided for the accommodation of cross pins, wherein for fastening the rotor blade on a rotor blade fixture, tensioning elements act upon the cross pins wherein at least one of the cross bores has a distance from the hub-side rotor blade edge which is different from the distance of a further cross bore from the rotor blade edge.

A method of reconstructing a ruptured anterior cruciate ligament in a human knee. Femoral and tibial tunnels are drilled into the femur and tibia. A transverse tunnel is drilled into the femur to intersect the femoral tunnel. A replacement graft is formed into a loop and moved into the femoral and tibial tunnels using a surgical needle and suture. A flexible filamentary member is simultaneously moved along with the loop into the femoral and transverse tunnels. A pin passing member maintains one end of the filamentary wire in the transverse tunnel as the graft is being moved into place in the femoral and tibial tunnels. The filamentary member is used as a guide wire in the transverse tunnel to insert a cannulated cross-pin to secure a top of the looped graft in the femoral tunnel.

A crosspin for supporting a graft ligament in a first bone tunnel formed in a bone. The crosspin is positioned in a second bone tunnel extending transverse to, and intersecting, the first bone tunnel. The crosspin is adapted to be drawn through the second bone tunnel by a flexible member attached to a distal portion of the cross pin. The crosspin includes a connector for releasably connecting the distal portion of the crosspin to an intermediate portion, such that the distal portion is separable from said intermediate portion.

The invention discloses a direction-adjusting device for an open-type full-section hard rock tunneling machine. The direction-adjusting device comprises a main beam, two support boots and a saddle tree, wherein guide rails are arranged on the two sides of the main beam; the two support boots are positioned on the two sides of the main beam; an upper support boot oil cylinder and a lower support boot oil cylinder are arranged on each support boot through a spherical hinge; an upper support boot oil cylinder shaft and a lower support boot oil cylinder shaft are respectively connected between the upper support boot oil cylinders and the lower support boot oil cylinders of the two support boots; the saddle tree is arranged on the guide rails and can move forwards and backwards relative to the guide rails; the two sides of each upper support boot oil cylinder are hinged with the saddle tree by torque oil cylinders; and the upper support boot oil cylinder shaft is connected with the saddle tree through a mutually rotated cross pin shaft structure. After adopting the direction-adjusting device, the open-type full-section hard rock tunneling machine can realize horizontal, vertical and torsion control and adjustment in a tunneling process of the tunneling machine rapidly, accurately and reliably.

A method of reconstructing a ruptured anterior cruciate ligament in a human knee. Femoral and tibial tunnels are drilled into the femur and tibia. A transverse tunnel is drilled into the femur to intersect the femoral tunnel. A replacement graft is formed into a loop and moved into the femoral and tibial tunnels using a surgical needle and suture. A flexible filamentary member is simultaneously moved along with the loop into the femoral and transverse tunnels. A pin passing member maintains one end of the filamentary wire in the transverse tunnel as the graft is being moved into place in the femoral and tibial tunnels. The filamentary member is used as a guide wire in the transverse tunnel to insert a cannulated cross-pin to secure a top of the looped graft in the femoral tunnel.

An adjustable drill guide is provided that can be used to deliver a cross pin at a distance near the entrance to the femoral bone tunnel during ligament surgery. The cross pin positioned at the joint line, or tunnel opening, compresses and secures the graft within the bone tunnel, thereby preventing the graft from swaying back and forth post surgery when the joint is in motion. The adjustable drill guide assembly comprises a guide frame that includes an arm portion and a base portion that extends transversely to the arm portion. A rod member connects to the base portion for extending into the hone tunnel of the bone. Also included is a guide member configured for connection to the arm portion. The guide member is configured to be in moveable and lockable disposition along a length of the arm portion.

A method of providing a replacement anterior cruciate ligament (ACL) provides a tibial tunnel and at least one femoral tunnel for receiving the replacement ligament, the femoral and tibial tunnels not being colinear but rather in an orientation that more closely mimics the natural ACL. The femoral tunnel is formed through the anterior medial portal. A cross pinning guide having a femoral rod for insertion into the femoral tunnel, a spaced apart arc shaped track and a guide block having one or more bores aligned with the femoral rod whereby an instrument inserted through one of the bores creates a pilot hole for the cross pin which intersects the femoral tunnel and an appropriate angle thereof which avoids ligaments and other sensitive tissue can be selected by adjusting the guide block along the track.

A truck bed cover is adapted to be attached to a toolbox. The cover is hinged to the rearward portion of the toolbox, thereby leaving the toolbox accessible even when the cover is closed over the bed. A single hydraulic cylinder may be used to raise and lower the cover. The hydraulic cylinder is anchored using cross pins in elongated slots. The anchor points are allowed to move so that upon closing the cover the cylinder shifts into a position which does not consume much of the useful space within the bed. A recessed channel on the underside of the cover locks over the pickup bed sides and the tailgate. When closed, the hydraulic cylinder pulls the cover tightly against the pickup truck body-thereby securing the contents of the bed. In addition, certain elements of the invention can be adapted for use in a cover which is not attached to a toolbox.

A differential having four pinions supported for rotation on cross pins within a differential case. The differential employs a retainer system for securing the cross pins relative to the differential case. The retainer system can include a collar and a plurality of pin members.