43 results about "Cuneus" patented technology

A keyhole drill guide stabilizer for stabilizing a drill guide when forming a second keyhole after the formation of a first keyhole, wherein the drill guide comprises a first drill bore and a second drill bore, the keyhole drill guide stabilizer comprising a body sized and shaped so as to make a close sliding fit with (i) the first bore of the drill guide, and (ii) the first keyhole, whereby to reduce the possibility of any positional variation between the first and second drilled keyholes.

Apparatus for performing an open wedge, high tibial osteotomy, the apparatus comprising:cutting apparatus for forming an osteotomy cut in the tibia, the cutting apparatus comprising:targeting apparatus for identifying a cutting plane through the tibia and a boundary line for terminating a cut made along the cutting plane, wherein the boundary line is located within the tibia, parallel to the anterior-posterior slope of the tibia and parallel to the sagittal plane of the patient.A method for performing an open wedge, high tibial osteotomy, the method comprising:positioning targeting apparatus for identifying a cutting plane through the tibia and a boundary line for terminating a cut made along the cutting plane, wherein the boundary line is located within the tibia, parallel to the anterior-posterior slope of the tibia and parallel to the sagittal plane of the patient;cutting the bone along the cutting plane, with the cut terminating at the boundary line;moving the bone on either side of the cut apart so as to form the wedge-like opening in the bone; andstabilizing the bone.

An osteotomy implant for supporting an open wedge osteotomy and method of use are described. In one form, the implant is configured to contain a graft material within the osteotomy. In another form, the implant is composed of multiple parts capable of being assembled either before or after insertion into the osteotomy.

Apparatus for performing an open wedge, high tibial osteotomy, the apparatus comprising:cutting apparatus for forming an osteotomy cut in the tibia, the cutting apparatus comprising:targeting apparatus for identifying a cutting plane through the tibia and a boundary line for terminating a cut made along the cutting plane, wherein the boundary line is located within the tibia, parallel to the anterior-posterior slope of the tibia and parallel to the sagittal plane of the patient.A method for performing an open wedge, high tibial osteotomy, the method comprising:positioning targeting apparatus for identifying a cutting plane through the tibia and a boundary line for terminating a cut made along the cutting plane, wherein the boundary line is located within the tibia, parallel to the anterior-posterior slope of the tibia and parallel to the sagittal plane of the patient;cutting the bone along the cutting plane, with the cut terminating at the boundary line;moving the bone on either-side of the cut apart so as to form the wedge-like opening in the bone; andstabilizing the bone.

A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ring includes an outer partial hemispherical surface and an inner bore with radially extending channels and partial capture recesses. The shank includes a bone implantable body with an external helical wound thread and an upwardly extending capture structure. The capture structure includes at least one spline which extends radially outward and has a wedged surface that faces radially outward therefrom. The capture structure operably passes through a central bore of the retaining ring while the spline passes through a suitably shaped channel so that the spline becomes positioned above the head at which time the shank is rotated appropriately and the shank is drawn back downwardly so that the spline engages and seats in the capture recess. The head includes an internal cavity having a spherical shaped surface that mates with the ring surface and has a lower restrictive neck that prevents passage of the ring once the ring is seated in the cavity.

A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ring includes an outer partial hemispherical surface and an inner bore with radially extending channels and partial capture recesses. The shank includes a bone implantable body with an external helical wound thread and an upwardly extending capture structure. The capture structure includes at least one spline which extends radially outward and has a wedged surface that faces radially outward therefrom. The capture structure operably passes through a central bore of the retaining ring while the spline passes through a suitably shaped channel so that the spline becomes positioned above the head at which time the shank is rotated appropriately and the shank is drawn back downwardly so that the spline engages and seats in the capture recess. The head includes an internal cavity having a spherical shaped surface that mates with the ring surface and has a lower restrictive neck that prevents passage of the ring once the ring is seated in the cavity.

The present invention comprises a novel method and apparatus for performing an open wedge, high tibial osteotomy. More particularly, the present invention comprises the provision and use of a novel method and apparatus for forming an appropriate osteotomy cut into the upper portion of the tibia, manipulating the tibia so as to open an appropriate wedge-like opening in the tibia, and then mounting an appropriately-shaped implant at the wedge-like opening in the tibia, so as to stabilize the tibia with the desired orientation, whereby to reorient the lower portion of the tibia relative to the tibial plateau and hence adjust the manner in which load is transferred from the femur to the tibia.

This invention relates to an implant to be inserted in the disc space between two adjacent vertebrae for the correction of the vertebral spine curvature. The configuration (lateral view) of the invention is basically a wedge or acute-angled isosceles trapeze, wherein the area opposite the shorter base or opposite to the vertex is a rounded pyramid-like surface, and the upper and lower surfaces of the trapeze include fixation protuberances to the vertebral plates of the adjacent vertebrae.

A bone plate for stabilizing adjacent vertebrae or ends of a bone has a span for extending across the discontinuity. The span has brackets for attaching to the bone. The brackets have countersunk apertures terminating through which bone screws are placed in the bone. An eccentric cam bore is located between the countersunk apertures and, upon rotation of an eccentric cam, wedge grip shoes are slid into the countersunk apertures and frictionally engage the spherical heads of the bone screws. To prevent back-out of the bone screws, the eccentric cam is locked into the wedge grip shoes.

An osteotomy plate for maintaining the spacing of a wedge-like opening in bone, the osteotomy plate comprising: a body having a front side and a back side; a key extending out of the back side of the body for disposition in a keyhole formed in the bone along the wedge-like opening; and a plurality of mounting holes for receiving fixation screws therein, the mounting holes being formed in the body such that when the key is disposed in the keyhole, the mounting holes direct the fixation screws into bone on either side of the wedge-like opening.

Deformities present on the end of a bone, for example the end of the metatarsal bone making up part of the metatarsocuneiform joint, can lead to deformities such as bunions. These deformities are treatable with an implant that comprises a plate with a wedge extending perpendicular from the plate. Following removal of cartilage from the joint, deformed portions at the end of the bone are removed and the wedge is inserted in the joint and held in place when the plate is attached to the bones flanking the joint. This effectively fuses the two bones together. The wedge can be shaped in various ways depending on the particular deformity present.

A bone plate used in conjunction with various procedures to correct certain deformities, such as a Latarjet procedure. The bone plate is provided with a plurality of spikes having a truncated, pyramidal shape with a plurality of sides or faces that converge to a tip line. The height of each spike is of about 2.5 to about 3 mm. The design of the spikes allows the plate to stay in the right position by simply pressing the plate with the fingers on the bone or using a specific instrument (before the fixation holes are drilled and the fixation devices such as screws are secured). The bone plate may be provided with side, lateral faces that have a non-uniform width (i.e., a wedged profile) to allow for orthograde placement of the fixation device, even in the case of angled bone surfaces.

Centerboard entering vessel opening spreads it to a slit. Needle pairs in slots across centerboard width are at about 2 mm intervals inside vessel. Pushing a wedge or bridge wire between pairs spreads needle noses about 1 mm on either side of free edge of slit. Suture loop ends are attached to each pair. An outboard has legs on either side of centerboard with a foot on each leg that stands on either side of slit outside vessel. Needle nose housings in each foot are directly opposite needle noses. Operator turning a screw pushes needle noses through vessel wall overcoming resistance in calcified vessels and housings hold needle noses by detents. Removing device from body brings suture ends outside with suture loops across slit in ideal 2×2 pattern. Alternative configurations provide means of joining and cutting suture ends, with preformed knots slid to opening or clamping ends together with a clip.

A method for performing an open wedge osteotomy, the method comprising:forming a cut in a bone;manipulating the portions of the bone adjacent to the cut so as to open the cut into a wedge-like opening;providing an osteotomy implant, wherein the osteotomy implant comprises:an elongated body characterized by a distal end and proximal end, the elongated body having a screw thread thereon;positioning at least the distal end of the elongated body into the wedge-like opening so that the screw thread engages the surrounding bone; andthreadingly advancing the elongated body into the wedge-like opening until the portions of the bone assume the desired positioning, with the elongated body stabilizing the bone portions in this position.

A slicing device for cutting fruits or vegetables into wedges, cubes, or other desired shapes includes a slicing frame and a pusher, in which the frame includes a grid of internal cutting blades. The pusher is configured to be used to push at least partially sliced food items through the gaps between cutting blades. In some versions, the pusher is pivotally attached to the slicer and includes a removable container.

The present invention comprises a novel method and apparatus for performing an open wedge, high tibial osteotomy. More particularly, the present invention comprises the provision and use of a novel method and apparatus for forming an appropriate osteotomy cut into the upper portion of the tibia, manipulating the tibia so as to open an appropriate wedge-like opening in the tibia, and then mounting an appropriately-shaped implant at the wedge-like opening in the tibia, so as to stabilize the tibia with the desired orientation, whereby to reorient the lower portion of the tibia relative to the tibial plateau and hence adjust the manner in which load is transferred from the femur to the tibia.

An osteotomy plate for maintaining the spacing of a wedge-like opening in bone, the osteotomy plate comprising:a body having a front side and a back side;a protrusion extending out of the back side of the body for disposition in the wedge-like opening; anda plurality of mounting holes for receiving fixation screws therein, the mounting holes being formed in the body such that when the protrusion is disposed in the wedge-like opening, the mounting holes direct the fixation screws into bone on either side of the wedge-like opening.

A method for performing an open wedge, high tibial osteotomy, the method comprising:identifying a cutting plane through the tibia and a boundary line for terminating a cut made along the cutting plane, wherein the boundary line is located within the tibia, parallel to the anterior-posterior slope of the tibia and parallel to the sagittal plane of the patient;positioning a hollow cylinder adjacent to an exterior surface of the tibia and co-axial with the boundary line;positioning a fluoroscope so that its field of view is parallel to the anterior-posterior slope of the tibia, parallel to the sagittal plane of the patient, and co-axial with the hollow cylinder;imaging with the fluoroscope and observing the profile of the hollow cylinder so as to confirm that the hollow cylinder is aligned co-axial with the boundary line;advancing an apex pin through the hollow cylinder and into the tibia along the boundary line so as to provide a positive stop at the boundary line for limiting cutting along the cutting plane;cutting the tibia along the cutting plane, with the cut terminating at the boundary line;moving the tibia on either side of the cut apart so as to form a wedge-like opening in the tibia; andstabilizing the tibia.A method for performing an open wedge, high tibial osteotomy, the method comprising:identifying a cutting plane through the tibia and a boundary line for terminating a cut made along the cutting plane, wherein the boundary line is located within the tibia, parallel to the anterior-posterior slope of the tibia and parallel to the sagittal plane of the patient;positioning a hollow apex pin adjacent to an exterior surface of the tibia and co-axial with the boundary line;positioning a fluoroscope so that its field of view is parallel to the anterior-posterior slope of the tibia, parallel to the sagittal plane of the patient, and co-axial with the hollow apex pin;imaging with the fluoroscope and observing the profile of the hollow apex pin so as to confirm that the hollow apex pin is aligned co-axial with the boundary line;advancing the hollow apex pin into the tibia along the boundary line so as to provide a positive stop at the boundary line for limiting cutting along the cutting plane;cutting the tibia along the cutting plane, with the cut terminating at the boundary line;moving the tibia on either side of the cut apart so as to form a wedge-like opening in the tibia; andstabilizing the tibia.

An implant to be inserted in a disc space between two adjacent vertebrae for the correction of vertebral spine curvature and method related thereto. A lateral configuration of the invention is a wedge or acute-angled isosceles triangle, wherein the base of the isosceles triangle is a rounded pyramid-like surface, and upper and lower surfaces of the isosceles triangle include fixation protuberances for fixing the implant to vertebral plates of the adjacent vertebrae.

The invention relates to a thigh stump endoprosthesis for an exoprosthetic treatment of a patient whose leg has been amputated in the thigh area, whereby the thigh stump can be pulled into a shaft to which the replica of a lower leg part and foot part of the prosthesis is attached. The inventive prosthesis includes a proximal shaft part which can be inserted inside a femur stump, whereby the shaft part is at least partially covered by an open-mesh three-dimensional spatial network structure, and includes a conical adapter on the distal end thereof. A condyle replacement which re-creates the shape of natural condyles of a knee joint can be coupled to the shaft part by means of said adapter. A cuneiform support can be joined to the condyle replacement with a wedge angle alpha which restores the valgity of the leg.

A jet pump stabilizer is disclosed and claimed. The stabilizer includes a clamp body that is affixed about the riser pipe. Two U-clamps are connected to the clamp body, each U-clamp positioned about a jet pump mixer section. A wedge assembly is positioned between the clamp body and each mixer pipe, cooperating with the clamp body and U-clamps to laterally restrain the mixer sections. A clamp ring is positioned about each mixer section and retained in place by the U-clamps, wedge assemblies, and clamp body. A sealing ring is moveably connected to the clamp ring such that it is biased toward engagement with the jet pump diffuser. Seals provided on the stabilizer engage the jet pump assembly above and below the slip joint, preventing vibration-inducing leakage through the slip joint.

A method and apparatus for arthroscopic biceps tenodesis wherein the method involves arthroscopically determining that biceps tenodesis is desirable; arthroscopically separating the long head of the biceps tendon from bone attachment; creating and placing a wedge at the proximal end of the long head of the biceps tendon; and allowing the tendon to slide through the glenohumeral joint and the wedge structure to be wedged in the bicipital groove. In some embodiments, the apparatus includes a button clamp wedge having top and bottom portions having mating protrusions and recesses to lock the top and bottom portions together, such that staggered ribs on the top portion and bottom portion grip top and bottom surfaces of the long head of the tendon when the top and bottom portions of the button clamp wedge are locked together. Some embodiments of the button clamp wedge have hinged portions similar to a clamshell.

Methods and implants to treat anterior cruciate ligament (ACL) injuries are disclosed. The methods involve advancing the insertion of the patellar tendon to the proximal tibia by means of a partial osteotomy and a wedge-shaped cage (30). The wedge-shaped cage is specifically designed to facilitate transfer of not only compressive loads, but also of shear loads due to pull by the patellar tendon at its insertion to the tibial tuberosity. The cage decreases the angle between the patellar tendon and the common tangent plane formed by the condyles of the femur and the condyles of the tibia (sometimes called tibial plateau) and consequently modifies the internal joint force, restoring stability to the joint even if the ACL is ruptured. The methods and implants are applicable to both human and canine patients.

The present invention relates to a fixing tool for an open-wedge high tibial osteotomy, and a fixing tool for an open-wedge high tibial osteotomy, which is installed on a tibia cut open due to a tibial osteotomy, includes: a fixing plate which includes a head portion that has a plurality of nut holes, and an elongated plate that has a plurality of nut holes and a long hole and is formed to protrude from one side of the head portion; screws which are coupled to the nut holes; and a block which is detachably installed in the long hole by using a fixing screw. Therefore, the fixing tool is closely fixed to a tibia, which has been cut open due to a procedure of a high tibial osteotomy, thereby enabling solid union of the tibia.

The invention relates to an interdental wedge for use with a matrix band when preparing a filling on a tooth to be restored and / or for use with a rubber dam, by inserting the interdental wedge into an area near the gingiva between the tooth to be restored or to be treated and an adjacent tooth, with an insertion area having a cross section delimited by a lower face, by an inner face and by an outer face, wherein, in the state inserted near the gingiva, the lower face is directed towards the gum, the inner face is directed towards the tooth to be restored or to be treated, and the outer face is directed towards the adjacent tooth, wherein the inner face and the lower face run together in an edge, which is designed such that, in the state inserted near the gingiva, it bears on the tooth to be restored or to be treated, in order to provide a sealing action against passage of material.

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.

A post shoulder surgery rehabilitation apparatus in the form of a bed wedge having a shoulder support wedge structure attachment to provide the optimal support and comfort to a patient while resting or sleeping on a bed or similar structure. An exemplary embodiment of the bed wedge apparatus is capable of being inflated and deflated to the optimal angle for comfort and support for the repaired shoulder by means of a remote control switch by the patients themselves without assistance from a caregiver. Alternate embodiments of the bed wedge apparatus include ones without the need for inflation or deflation and ones that have shoulder support wedge structures for both shoulders after surgery.

A transceiver module release system is disclosed. The system may be used to release a transceiver module housed in a cage that is permanently mounted on a printed circuit board. The release system may include a bail that rotates a slide-block through a slot to urge the bail forward in a slide-block path on the transceiver module. The bail has a hook shaped structure adapted to be connected with a detachable pull tab. As the bail begins to move forward from the locked position, wedge elements at the end of a pair of slide-block arms extending rearward from the bail may contact locking tabs on the cage, forcing the locking tabs outward. As the locking tabs are forced outward, the shoulders of the transceiver module are released, and the transceiver module is free to slide-block out of the cage as the operator pulls on the bail.