69 results about "Femoral tunnel" 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.

A soft tissue fixation system, most typically applicable to orthopedic joint repairs, such as anterior cruciate ligament (ACL) knee repair procedures, comprises an implant which is placeable in a tunnel disposed in a portion of bone, wherein the tunnel is defined by walls comprised of bone. A first member is deployable outwardly to engage the tunnel walls for anchoring the implant in place in the tunnel, and a second member is deployable outwardly to engage tissue material to be fixed within the tunnel. The second member also functions to move the tissue material outwardly into contact with the tunnel walls to promote tendon-bone fixation. Extra graft length is eliminated by compression of the tendon against the bone at the aperture of the femoral tunnel, which more closely replicates the native ACL and increases graft stiffness. The inventive device provides high fixation of tendon to bone and active tendon-bone compression. Graft strength has been found to be greater than 1,000 N (Newtons), which is desirable for ACL reconstruction systems.

A surgical method and implant for directing and securing a replacement ligament into the femur or tibia of the knee. A transverse tunnel may be formed in the femur approximately perpendicular to a femoral tunnel. A flexible strand passing through the transverse tunnel may be used to draw the replacement ligament into the femoral tunnel. The implant may then be placed into the transverse tunnel and through the replacement ligament to secure the replacement ligament in place. The implant may include an eyelet to receive the flexible strand and a tapered portion forming a shoulder to prevent the implant from being inserted too far into the transverse tunnel. The implant may also have a multi-angular configured portion to secure the implant within the transverse tunnel through an interference fit.

A system is disclosed for repairing and reconstructing an injured anterior cruciate ligament (ACL); This system may be used irrespective of the type of patient or the ACL graft selected. Means for performing single or multiple bundle reconstruction, primary ACL repair and physeal-sparing ACL reconstruction are disclosed. A guide for inside-out creation of a femoral tunnel independent of the tibial tunnel is also disclosed, as well as a series of implant options for tibial and femoral fixation of any bone-soft-tissue composite or soft-tissue-only graft.

The equal tension applying device is used to apply equal tension to a group of tendons. The device comprises a 3 to 9 inch elongate flexible member and a hook at each end of the flexible member. Typically a torn ACL is replaced with two loops of tendons defining 4 tendon strands. The ends of each strand have sutures therein. The tendon loops are fixed in a femoral tunnel with a fixation pin and extend into and through a tibial tunnel. The method includes the steps of: tying the ends of the sutures together to form a loop, placing a hook of the elongate tensioning device over the suture loop, applying tension on the device, followed by anchoring the ends of the tendon strands to the tibia.

A localization device display method and apparatus for displaying different views, e.g., of different magnification, based on the proximity of the tip of a pointer tracked by the localization device to a reference location identified by the localization device. The display method and apparatus may be incorporated into a surgical navigation system for use in identifying a location for drilling a femoral tunnel in an ACL repair procedure.

An “all-inside double-bundle” ACL reconstruction technique, according to which two femoral sockets and two closed tibial sockets are provided to accommodate retrograde fixation of two grafts (for example, two semitendonosus allografts) within the four sockets. At least one of the tibial sockets is formed by using a retrograde drill device provided with a retrograde drill cutter detachable from a retrograde drill guide pin. The femoral tunnels or sockets may be formed by the retrograde drill method or by a conventional method, and may be carried out before or after the formation of the tibial sockets. The grafts (for example, two semitendonosus allografts) are secured in the knee by employing a continuous loop / button construct provided with a button, preferably of titanium alloy, and a continuous loop of suture attached to the button.

The present invention provides a method of performing posterior cruciate ligament replacement. Specifically, a graft tissue is harvested from a patient and single tunnels are prepared in each of the tibia and the femur of the patient. The graft is secured in the femoral tunnel and separated into a posterior cruciate medial bundle and a posterior lateral bundle. The bundles are inserted through the tibial tunnel. During insertion the posterior lateral bundle is positioned in a posterior lateral position in the tibial tunnel while the posterior cruciate medial bundle is positioned in a posterior cruciate medial position in the tibial tunnel. The posterior cruciate medial bundle is then tensioned while the patient's knee is in approximately 90 degrees of flexion, and the posterior lateral bundle is tensioned while the patient's knee is approximately in full extension. Each of the bundles is then secured in the tibial tunnel.

The present invention provides a method of performing anterior cruciate ligament replacement. Specifically, a graft tissue is harvested from a patient and single tunnels are prepared in each of the tibia and the femur of the patient. The graft is secured in the femoral tunnel and separated into an anterior cruciate medial bundle and a anterior cruciate posterior lateral bundle. The bundles are inserted through the tibial tunnel. During insertion the posterior lateral bundle is positioned in a posterior lateral position in the tibial tunnel while the anterior cruciate medial bundle is positioned in an anterior cruciate medial position in the tibial tunnel. The anterior cruciate medial bundle is then tensioned while the patient's knee is in approximately 90 degrees of flexion, and the posterior lateral bundle is tensioned while the patient's knee is approximately in full extension. Each of the bundles is then secured in the tibial tunnel.

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 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.

A soft tissue fixation system, most typically applicable to orthopedic joint repairs, such as anterior cruciate ligament (ACL) knee repair procedures, comprises an implant which is placeable in a tunnel disposed in a portion of bone, wherein the tunnel is defined by walls comprised of bone. A first member is deployable outwardly to engage the tunnel walls for anchoring the implant in place in the tunnel, and a second member is deployable outwardly to engage tissue material to be fixed within the tunnel. The second member also functions to move the tissue material outwardly into contact with the tunnel walls to promote tendon-bone fixation. Extra graft length is eliminated by compression of the tendon against the bone at the aperture of the femoral tunnel, which more closely replicates the native ACL and increases graft stiffness. The inventive device provides high fixation of tendon to bone and active tendon-bone compression. Graft strength has been found to be greater than 1,000 N (Newtons), which is desirable for ACL reconstruction systems.

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 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 surgical method and implant for directing and securing a replacement ligament into the femur or tibia of the knee. A transverse tunnel may be formed in the femur approximately perpendicular to a femoral tunnel. A flexible strand passing through the transverse tunnel may be used to draw the replacement ligament into the femoral tunnel. The implant may then be placed into the transverse tunnel and through the replacement ligament to secure the replacement ligament in place. The implant may include an eyelet to receive the flexible strand and a tapered portion forming a shoulder to prevent the implant from being inserted too far into the transverse tunnel. The implant may also have a multi-angular configured portion to secure the implant within the transverse tunnel through an interference fit.

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 technique and reconstruction system for ligament repair by determining the exact length of the graft to be secured within a first tunnel or socket (for example, a tibial tunnel) and a second tunnel or socket (for example, a femoral tunnel) for improved graft fixation. The exact length of the graft (soft tissue graft or BTB graft, for example) is determined with a measuring device, by measuring the length of a first socket in a first bone region (for example, a tibial socket), the length of a second socket in a second bone region (for example, a femoral socket), and the length of the intraarticular joint space between the two sockets in the two bone regions (for example, tibia and femur). The measuring device may consist of at least one flexible member (for example, suture) with at least one fixation device attached to the flexible member, the fixation device being either a sliding knot, a washer or a button.

A guide for positioning a femoral tunnel during an ACL repair. The device may include a shaft having two or more lumen extending longitudinally therethrough. The device may also include a distal offset projection, at least a portion of the distal offset projection extending distally from the elongated shaft.

A surgical method and implant for directing and securing a replacement ligament into the femur or tibia of the knee. A transverse tunnel may be formed in the femur approximately perpendicular to a femoral tunnel. A flexible strand passing through the transverse tunnel may be used to draw the replacement ligament into the femoral tunnel. The implant may then be placed into the transverse tunnel and through the replacement ligament to secure the replacement ligament in place. The implant may include an eyelet to receive the flexible strand and a tapered portion forming a shoulder to prevent the implant from being inserted too far into the transverse tunnel. The implant may also have a multi-angular configured portion to secure the implant within the transverse tunnel through an interference fit.

A device for positioning a femoral tunnel during ACL reconstruction, the device comprising: a shaft having a lumen, the lumen defining a longitudinal axis; and a distal offset projection, at least a portion of the distal offset projection extending distally from the elongated shaft; and a single lateral reference member configured to reference a portion of a patient's anatomy, e.g., a PCL or a portion of the femoral notch, the lateral reference member located on one of the left or the right side of the device, wherein, on a second one of the left or the right side of the device, the device defines a void. Two devices may be employed to provide a set.

A guide for positioning a femoral tunnel during an ACL repair. The device may include a shaft having a lumen, the lumen defining a longitudinal axis, and a distal offset projection, at least a portion of the distal offset projection extending distally from the elongated shaft, wherein the distal offset projection and the shaft are moveable relative to each other.

The invention relates to a knee joint anterior and posterior cruciate ligament femoral tunnel positioner. The positioner comprises a hook body, wherein the hook head of the hook body extends in the knee joint cavity and points to the anterior and posterior cruciate ligament femoral insertion; the long stem of the hook head is upward and above the front of the femur of knee joint and is connected with an arc chute which is arranged laterally; a curved lever which can slide relatively to the arc chute is embedded in the arc chute; and the movable end of the curved lever is provided with a drillstem guide sleeve which directly points to the tip of the ligament hook head. By adopting the positioner of the invention, the problem that the previous arthroscope can perform observation only through the lateral approach and the visual blind area is caused, can be solved; and the reconstruction of femoral tunnel can be better performed from the physical point of the ligament, thus the reconstruction of femoral tunnel in clinic has higher repeatability and operability, the accuracy degree of operations is greatly increased, the operating time is reduced, and the positioner has great use value and wide market space.

A hinged pivoting guide for positioning a femoral tunnel in anterior cruciate ligament (ACL) reconstruction locates a drilling hole for placement that optimally penetrates a minimal depth of soft tissue (skin, muscle, etc.) yet directs drilling into a sufficiently rigid and structurally sound area of the femur. The hinged guide allows placement of an aimer point at a desired drilling exit location on the femur. The hinge is adapted to secure the aimer at a degree of rotation about an axis defined by the hinge rotation, such that the axis passes through the aimer point throughout rotation of the hinge while maintaining the aimer point in line with an insertion guide slideably movable through the aperture in the handle, the aperture defined by an insertion axis extending toward the aimer point such that the aimer point remains disposed at the intersection of the hinge axis and the insertion axis.

A guide for positioning a femoral tunnel during an ACL repair. The device may include a shaft having two or more lumen extending longitudinally therethrough. The device may also include a distal offset projection, at least a portion of the distal offset projection extending distally from the elongated shaft.

The present invention provides a method of performing anterior cruciate ligament replacement. Specifically, a graft tissue is harvested from a patient and single tunnels are prepared in each of the tibia and the femur of the patient. The graft is secured in the femoral tunnel and separated into an anterior cruciate medial bundle and a anterior cruciate posterior lateral bundle. The bundles are inserted through the tibial tunnel. During insertion the posterior lateral bundle is positioned in a posterior lateral position in the tibial tunnel while the anterior cruciate medial bundle is positioned in an anterior cruciate medial position in the tibial tunnel. The anterior cruciate medial bundle is then tensioned while the patient's knee is in approximately 90 degrees of flexion, and the posterior lateral bundle is tensioned while the patient's knee is approximately in full extension. Each of the bundles is then secured in the tibial tunnel.

A wedge is used to engage on one side with a femoral tunnel or a tibial tunnel and on the opposite side engage with a bone plug. This is accomplished by forming a wedge being substantially semi-circular on one side and flat on the opposite side.

The invention provides a single-hole suspended artificial ligament which comprises a femoral tunnel part, an intra-articular free fiber part, a tibial tunnel weaving part and a pull wire part that are sequentially connected, wherein a signal hole is formed on the femoral tunnel part. The invention further provides a preparation method of the single-hole suspended artificial ligament. The single-hole suspended artificial ligament has the benefits that when the artificial ligament is used to reconstruct a human anterior cruciate ligament, the fixation of the artificial ligament is intensified, and a contact area between the artificial ligament and a bone tunnel is increased, thereby promoting the healing of the artificial ligament and the bone tunnel; and the artificial ligament is simple in structure and convenient to use.