116 results about "Bone removal" patented technology

Methods and devices for sculpting bones, particularly in preparation for implanting prosthetic devices to replace articulating bone joint surfaces. Improved bone removal devices including burr mills driven by gears and loop drives are provided. Reciprocating cutters and belt cutters are also provided. Some devices have either integral or removable expandable portions to vary the force and bone resection depth. Devices can have irrigation ports and plenums to remove bone fragments. Some cutters are dual cutters, adapted to remove bone in two or more regions, such as the knee joint, simultaneously.

A lordotic guard and method for guiding a bone removal device to form an implantation space in the human spine and, if desired, for inserting a spinal implant into the implantation space. The guard has a body having a first portion and a second portion in pivotal relationship to one another proximate the leading end between an open position and a closed position. The first and second portions define an opening for providing a protected pathway to the disc space and the adjacent vertebral bodies. At least one disc space penetrating extension extends from the leading end of the body adapted for insertion at least in part into the disc space. First and second portions of the extension are in pivotal relationship to one another about an axis that passes through at least a portion of the pathway.

A bone preparation device for preparing a bone surface for receiving an implant.

Described herein is a device and method used to effectively remove volume inside a patient in various types of surgeries, such as spinal surgeries (e.g. laminotomy), neurosurgeries (various types of craniotomy), ENT surgeries (e.g. tumor removal), and orthopedic surgeries (bone removal). Robotic assistance linked with a navigation system and medical imaging it can shorten surgery time, make the surgery safer and free surgeon from doing repetitive and laborious tasks. In certain embodiments, the disclosed technology includes a surgical instrument holder for use with a robotic surgical system. In certain embodiments, the surgical instrument holder is attached to or is part of an end effector of a robotic arm, and provides a rigid structure that allows for precise removal of a target volume in a patient.

A method and apparatus for whole body bone removal and vasculature visualization in medical image data, such as computed tomography angiography (CTA) scans, is disclosed. Bone structures are segmented in the a 3D medical image, resulting in a bone mask of the 3D medical image. Vessel structures are segmented in the 3D medical image, resulting in a vessel mask of the 3D medical image. The bone mask and the vessel mask are refined by fusing information from the bone mask and the vessel mask. Bone voxels are removed from the 3D medical image using the refined bone mask, in order to generate a visualization of the vessel structures in the 3D medical image.

A prosthetic device, method for planning bone removal, and a robotic system for implantation of a prosthetic device in bone are disclosed. The prosthetic device can include a body portion for attachment to a bone, wherein the body portion includes an implantation surface configured to face the bone upon implantation, and a constraint structure. The prosthetic device, method, and robotic system can be configured to cause the constraint structure and bone to interact so as to constrain the prosthetic device in the bone.

Systems and methods for treating spinal stenosis include endoscopic access devices and bone removal devices used to perform a foraminotomy or other bone removal procedures. A bone removal device includes a cannulotome with an endoscopic imaging lumen. Optionally, an endoscope retaining device can be used to facilitate advancement of the endoscope through the cannulotome.

Rasps for preparing bones of various patients to receive a prosthetic implant and a method for using the same. Multiple rasps may be provided as a set. Within the set, the rasps generally correspond to the size and shape of a single prosthetic implant, such as a prosthetic femoral hip stem, and have a range of bone removal and bone compression capabilities to account for unique bone characteristics of the various patients. A surgeon may select a desired rasp from the set provided depending on the patient's unique bone characteristics.

An intervertebral milling instrument for removing calcified fibrous cartilage (CFC) from adjacent vertebrae during spinal fusion or spacer implantation surgery. The milling instrument includes a grinding wheel carried within a guide housing sized to fit closely into the intervertebral space, and to expose the grinding wheel on opposite sides thereof for controlled removal of CFC layers from adjacent cortical end plates. The grinding wheel is rotatably driven as by attachment to a surgical drill, preferably to include saline supply to and suction removal from the grinding site. The controlled removal of CFC layers is limited to about 100 to about 250 microns, thereby avoiding exposing the cortical end plates without excessive bone removal. The instrument is conveniently provided in a kit having multiple guide housings and associated grinding wheels of different sizes to fit into different intervertebral spaces.

The present invention relates to a method for automatically removing bones and trimming a product such as fish fillets, where the fillets are in an under cooled state. The under cooling makes the fillets sufficiently stiff to remove pin pones and portion a fillet before or after skinning the fillet in a relative still position providing better cutting than conventional methods. This provides more efficiency than prior art methods as well as increasing the value of the product due to less gaping and dehydration of the product. The method of the present invention further provides possibilities for grading of products processed with the three dimensional scanning and digital imaging of the products.

An apparatus and method for removing bones from a sub-primal cut meat portion, and more particularly, an apparatus and method for removing bones from a chuck blade sub-primal cut meat portion where said apparatus includes a carousel-type conveyor system arrangement having at least one mounting station and at least one meat cutting station. The carousel-type conveyor has a mounting fixture that is adapted to hold and manipulate and orient the meat cut such that bone removal can be performed effectively. The carousel-type conveyor in one embodiment is a rotation table which transitions the mounting fixture with the sub-primal cut mounted thereon to a position adjacent a cutting station. Each cutting station includes at least one reciprocating chisel blade assembly that is utilized to sever the meat from the bone by repetitively plunging and retracting a chisel blade into and from the meat and bone interface with a reciprocating stabbing action thereby severing the meat from the bone. The maneuvering and cutting pattern of the chisel blade assembly is controlled by a controller which can be a PLC or a computer or any other appropriate computing device.

The invention relates to the field of medical apparatus and instruments, in particular to a non-metal ball hip joint prosthesis.The non-metal ball hip joint prosthesis comprises an acetabulum cup prosthesis body, a non-metal femoral head prosthesis body and a femoral stem prosthesis body.According to the non-metal ball hip joint prosthesis, an original acetabulum cup and liner are changed into a metal cup, and meanwhile a traditional metal or ceramic ball is changed into a high-crosslinking polyethylene ball with a metal core.On the premise that compatibility of the original metal-polyethylene joint surface is maintained, the thickness of the acetabulum cup is greatly decreased, and the large-diameter ball can be used when the small-diameter joint cup is available.Connection among components is reduced, meanwhile, the wear probabilit is greatly lowered, and the defects that a traditional complete hip joint prosthesis is small in movement angle, prone to dislocation and high in acetabulum side bone removal amount are overcome.