A device is provided, including a cutting rib, the cutting rib including an arcuate portion having an outer sharp edge and a centralizer configured to receive the cutting rib through a radial slot, the radial slot forming a gap with the cutting rib. The arcuate portion of the cutting rib is formed into a profile that follows a surface of the centralizer, the outer sharp edge of the arcuate portion of the cutting rib has a wavy profile that forms a tunnel in the gap between the centralizer and the cutting rib, and the outer sharp edge of the arcuate portion of the cutting rib protrudes outwardly from the surface of the centralizer. A method for using the device to cut bone in a surgical configuration is also provided.

The present invention provides decorticating screws and insertion tools for implanting the decorticating screws. The screws anchor into a first and a second bone to fuse the two bones together. The screws include a rotatable bladed section to decorticate a joint space between the first and second bone. The screws also optionally include a cap to secure the screws in the bone and apply compression to the joint to be fused. In some embodiments, the decorticating screws are useful for sacroiliac (SI) joint fusion.

A cartilage trimmer according to an exemplary aspect of the present disclosure includes, inter alia, a guide pin connected to a cutter with a blade projecting from only one side of the guide pin.

A dental implant drill bit is internally irrigated and guided by markings. The dental implant drill bit also uses a collar to stop the drill. Any size of implant hole required for placing an implant directly corresponds with one size of implant drill bit, thus allowing a single drill bit osteotomy. Using the internally irrigated dental implant drill reduces the time and number of drill bits during osteotomy.

Surgical instruments and methods for performing an osteotomy are disclosed herein. A surgical instrument includes a body with a distal end, a proximal end, a first surface, and a second surface. The surgical instrument can include cutting burrs positioned on the first surface and/or the second surface. The surgical instrument can also include cutting burrs positioned on the first surface and cutting blades positioned on the second surface.

A medical device for delivering an action to an area of a hip joint or its surroundings, inside a human body, is provided. The hip joint of a patient comprises a collum femur and a ball shaped caput femur, being the proximal parts of the femoral bone, and an acetabulum, being a bowl shaped part of the pelvic bone. The medical device comprising; an elongated member, having a length axis along its elongated distribution, comprising a first portion, adapted to enter the body of the patient, and a mechanical element, adapted to be used during an operation in the hip joint or its surroundings, inside the body. The first portion of the elongated member comprises a holding member adapted to hold the mechanical element inside the body of the patient, wherein the first portion of the elongated member have a first portion cross-section area substantially perpendicular to the length axis of the elongated member. The first portion is adapted to pass through a hole, in a bone of the patient, the hole having a hole cross-section area. The first portion cross-section area, is adapted to be smaller than said hole cross-section area. The mechanical element have a functional status, ready to deliver said action inside said body, when held by the holding member inside the body of the patient. The mechanical element is adapted to have a mechanical element cross-sectional area substantially perpendicular to the length axis of the elongated member, substantially larger than the first portion cross-sectional area and adapted to be unable to pass through the hole, when the mechanical element is in the functional status.

The shank (12) of a disposable rotary cutting tool (10) comprises a pipe section (16) cut from a drawn metal pipe. The tool head (14) is formed from a cut-out (18a, 18b) of a drawn metal sheet or a section of a metal tube by non-cutting machining. The pipe section (16) and the tool head (14) are advantageously attached by force fitting.

A rotary mill is disclosed comprising a body portion (4) having a milling surface (10) and a central bore (20) extending along an axis of rotation (18) of the body portion (4); and a guide portion (6) having a guide body (22) and a guide peg (24) extending from the guide body (22), the guide peg (24) operable to be received in the central bore (20) of the body portion (4), the guide body (22) having at least one alignment feature (28, 30) which is the same as that of a prosthesis component. A method of implanting a unicondylar femoral component is also disclosed, the method comprising, a) reaming the femoral condylar surface to accept the unicondylar femoral component; b) drilling peg holes for affixing the unicondylar femoral component; c) affixing a guide portion of a rotary mill onto the prepared condylar surface using the drilled peg holes; d) reaming a portion of bone anterior to the affixed guide portion; e) removing the guide portion from the bone; and f) affixing a unicondylar femoral component to the prepared condylar surface.

A medical drill bit comprises an accommodating slot disposed concavely on a main body of the medical drill bit, a separate board disposed in the accommodating slot to separate the accommodating slot into a first slot and a second slot, and a lid engaging with the separate board and covering the accommodating slot. The lid and the separate board do not rotate with the main body when the main body in rotation. The accommodating uses to fill with cooling liquid which able to be pumped out from the accommodating slot, and fresh cooling liquid is able to inject into the accommodating slot for cooling the drill bit in rotation.

A detachable medical cutting tool includes a shank portion, a cutting edge portion, a rotation prevention portion and a coherence keeping portion. The shank portion includes a connection portion. The cutting edge portion includes a combination portion to be combined removably with the connection portion of the shank portion. The rotation prevention portion is interposed between the connection portion of the shank portion and the combination portion of the cutting edge portion. The rotation prevention portion prevents from a rotation in a rotation direction. The coherence keeping portion keeps coherence when the connection portion of the shank portion and the combination portion of the cutting edge portion are combined with each other. The shank portion includes stainless steel. The cutting edge portion includes zirconia. The detachable medical cutting tool is configured to be combined with a high speed rotation apparatus to perform a perforation drilling at a bone tissue of a human body.