387 results about "Bone cutting" patented technology

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided. The surgical saw blade may have a distal end having at least one pair of teeth configured to be adjacent to each other and each of the pair of teeth is configured as a right triangle each having a hypotenuse which is oriented at least one of towards and away from the centrally positioned long axis.

A system and method are provided for making an access channel through a vertebral body to access a site of neural compression, decompressing it, and repairing the channel to restore vertebral integrity. System elements include an implantable vertebral plate, a guidance device for orienting bone cutting tools and controlling the path of a cutting tool, a bone cutting tool to make a channel in the vertebral body, a tool for opening or partially-resecting the posterior longitudinal ligament of the spine, a tool for retrieving a herniated disc, an implantable device with osteogenic material to fill the access channel, and a retention device that lockably-engages the bone plate to retain it in position after insertion. System elements may be included in a surgery to decompress an individual nerve root, the spinal cord, or the cauda equina when compressed, for example, by any of a herniated disc, an osteophyte, a thickened ligament arising from degenerative changes within the spine, a hematoma, or a tumor.

Tissue removal probes comprise an elongated member, a drive shaft rotatably disposed within the member, and a rotatably tissue removal element mounted to the distal end of the drive shaft. One tissue removal element comprises a plurality of tissue-cutting filaments affixed at proximal and distal ends of the tissue removal element. The cutting filaments may have optional hinge points that allow the distal end of the tissue removal element to be inverted, thereby transforming the tissue removal element from a tissue-cutting device to a tissue-grasping device. Another tissue removal element may have a blunted tip to prevent distal tissue trauma and an irrigation port to provide irrigation fluid to the removed tissue and / or tissue removal element. Another tissue removal element has a proximal and distal spiral grooves that are oppositely pitched, so that removed tissue can be collected in the middle of the tissue removal element. Another tissue removal element has independent counter-rotating tissue removal elements to maintain stability during a bone cutting procedure. Still another tissue removal element takes the form of a drill bit with fluted cutting grooves. Yet another tissue removal element has cascading tissue-cutting notches that can be reciprocatably moved to remove tissue within a hole.

A guide for cutting a bone comprising an anterior portion and a distal portion orientated at about a right angle to the anterior portion. The distal portion includes a guiding side, a distal surface at the guiding side, a box-cut shaped opening defined by the guiding side, a plurality of first cutting surfaces disposed at the guiding side at an acute angle relative to the distal surface of the guiding side operable to guide a cutting device to the bone to form chamfer cuts in the bone, and a second cutting surface disposed at the guiding side at at least about a right angle to the distal surface operable to guide a cutting device to the bone to form a posterior cut in the bone.

A device for providing percutaneous access to a surgical site. In an embodiment, the device comprises a handle. In addition, the device comprises a bone-cutting member extending from the handle, wherein the bone-cutting member includes a handle end fixed to the handle and a cutting end. Further, the device comprises a portal including a first end, a second end, and a through bore extending therebetween, wherein the bone-cutting member is disposed within the through bore and concentric with the portal Still further, the portal has a first position with the second end releasably coupled to the handle and a second position with the second end released from the handle and the bone-cutting member.

A device for positioning a cutting guide with respect to a bone comprising a body forming the cutting guide or intended to be fixed to the cutting guide; a least two contact members intended to freely contact the bone; and adjustment means for individually varying the relative position of the body with respect to each contact member.

A system for cutting a bone at a desired location may include an image guided drill cylinder configured to receive either a drill bit to create a bore at a target location on the bone or a pin for insertion into the target location, and a cutting block having a plurality of adjustable guides, each defining a cutting path to guide a cutting instrument, a mounting location configured to attach to the bone at the target location, and a plurality of adjustors for adjusting the position of the guides relative to the target location. The system may further include a tracking instrument for providing image guidance of the adjustments to the positions of the guides.

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided.

A tibial resurfacing system is provided that includes a drill guide, bone chisel and implant. In one aspect, the system includes a drill guide that includes a targeting ring that is shaped to be placed on the superior tibial surface and a bore section that is connected to the ring to create an axis through the tibia to the superior tibial surface in the vicinity of the targeting ring. The drill guide permits a drill pin and / or drill to be advanced through the tibia to the superior tibial surface. In another aspect, a bone chisel is provided that includes an elongated tubular structure having a first end and a bone-cutting end, and the bone-cutting end is terminated in a transverse angle thereby creating an elliptical bone-cutting face. In another aspect, an implant is provided that includes an angled bearing element formed of a cylindrical member having a first end and a second end. The first end is formed at an angle that creates an elliptical face of the first end, and the first end defines a load-bearing surface of an articular surface.

A system and method are provided for making an access channel through a vertebral body to access a site of neural compression, decompressing it, and repairing the channel to restore vertebral integrity. System elements include an implantable vertebral plate, a guidance device for orienting bone cutting tools and controlling the path of a cutting tool, a bone cutting tool to make a channel in the vertebral body, a tool for opening or partially-resecting the posterior longitudinal ligament of the spine, a tool for retrieving a herniated disc, an implantable device with osteogenic material to fill the access channel, and a retention device that lockably-engages the bone plate to retain it in position after insertion. System elements may be included in a surgery to decompress an individual nerve root, the spinal cord, or the cauda equina when compressed, for example, by any of a herniated disc, an osteophyte, a thickened ligament arising from degenerative changes within the spine, a hematoma, or a tumor.

A bone cutting guide block has a cutting tool guide surface and a navigation mount for a navigation tracker component for computer aided positioning of the guide for a resection procedure. In various embodiments, the guide includes a rotation means. Preferably, a swivel with a pivot apparatus is provided to limit rotation to permit controlled flexion-extension angle about the pivot with respect to the cutting guide surface. A fixing member through the swivel permits for varus-valgus adjustment of the guide surface. Optionally, a positioning actuator and / or biased resistance actuator implements more regulated flexion-extension angle adjustment with the swivel. Various traversing mechanisms, such as a threaded wheel or pivoted cam tool permit controlled proximal-distal adjustment of the cutting guide surface.

A tibial resurfacing system is provided that includes a drill guide, bone chisel and implant. In one aspect, the system includes a drill guide that includes a targeting ring and a bore section for creating an axis through the tibia to the superior tibial surface in the vicinity of the targeting ring. In another aspect, a bone chisel is provided that includes a bone-cutting end, having a transverse angle creating an elliptical bone-cutting face. In another aspect, an implant is provided that includes an angled bearing element formed of a cylindrical member having a first end defining a load-bearing surface, and a second end. The first end is formed at an angle that creates an elliptical face of the first end.

A drill guide assembly for drilling a tunnel having a fixed, non-zero radius of curvature, where the drill guide assembly includes a housing and a sleeve, or cutting tube, configured to reciprocate within the distal portion where the sleeve, or cutting tube, is configured to receive a bone cutting instrument.

A computer assisted surgical system for guiding bone cutting operations of an arthroplasty surgery is provided. The computer assisted surgical system includes a cutting guide having a guiding surface for mounting to a bone and a computer. The computer is in communication with the cutting guide and configured to generate a bone model of the first bone without the use of pre-operative bone images, determine a position of an implant model having a bone interface surface on the bone model, determine a position of the cutting guide on the first bone based on the determined position of the implant model on the bone model, and position the guiding surface of the cutting guide to one of a plurality of predetermined cut configurations relative to the bone interface surface.

The invention provides a fastener implant for osteosynthesis of fragments of the first metatarsal bone in its proximal portion situated towards the tarsal bone, the implant comprising at least a fastener element for fastening via a fastener face on or against the outside surface of the first metatarsal bone in order to hold the bone fragments together, wherein said fastener face includes at least one anatomical surface portion of shape that is substantially complementary to the shape of the plantar surface of the proximal portion of the first metatarsal bone.

A surgical tool (5) used for preparing a surgical sinus-lift osteotomy has a defined thread geometry in series with an osteotome tip to cut, crack and push bone from the sinus floor upward into the sinus cavity in a tactual, gentle and controlled motion. The apical osteotome tip is driven into a pre-drilled pilot osteotomy after the cutting threads are engaged and rotated until the sinus floor is cracked free. Once the bony sinus floor is cracked free, a fluid passageway can be pressurized with a sterile fluid at a defined pressure to release and push the sinus membrane upward into the sinus cavity to create a desired apical cavity for grafting. The invention solves the problems for preparing a sinus-lift surgical osteotomy and desired cavity space while minimizing the risk of compromising or tearing the sinus membrane. The invention allows the physician to easily form the desired sinus cavity to allow for grafting and to receive a screw formed dental implant while minimizing the risk of certain undesired surgical conditions.

A disposable, bone graft harvester having a clear, graduated plastic tube tipped with a bone cutting head at one end and a handle or other torque supplying connection at the other end.

A method for aligning a bone cutting guide on a tibia may involve coupling a cutting guide alignment device and an attached cutting guide with a tibia, adjusting the alignment device in a varus / valgus orientation, adjusting the alignment device in an anterior / posterior orientation, attaching the cutting guide to the tibia, and removing the alignment device from the cutting guide, leaving the cutting guide attached to the tibia. The adjustments to the alignment device may be made according to vertically and horizontally oriented laser lights emitted from the alignment device. As the alignment device is adjusted, the bone cutting guide attached to the alignment device changes position relative to the tibia.

A retractor system and associated method are provided to manage soft tissue around a spinal surgical field. The system includes a hollow retractor with proximal and a distal apertures and an internal circumferential surface connecting the apertures, the surface and the apertures defining an operating volume and the area of the distal aperture defining an operating field. The system may further include other elements such as a handling tool to facilitate placement and removal of the retractor, a bone cutting tool, a trajectory control sleeve to guide the bone cutting tool, and / or an implantable bone plate upon which to position the retractor. A method for spinal surgery, particular from an anterior approach, includes positioning the retractor at a surgical site, and performing a medical procedure through the operating volume provided by the retractor.

A longitudinal minimal-invasion bone cutter for tubular bones comprises a bone cutting end bone cutting device and far end positioning devices. The bone cutting end bone cutting device is slidingly sleeved on a positioning adjusting guide rail which is in a long-strip shape, a sliding groove is arranged in the middle of the positioning adjusting guide rail along the length direction, and scales of the positioning adjusting guide rail are arranged along the sliding groove. The far end positioning devices are symmetrically sleeved at two ends of the positioning adjusting guide rail slidingly. By means of the longitudinal minimal-invasion bone cutter, medical workers can perform longitudinal bone cutting operations on the tubular bones according to treatment needs, and the longitudinal minimal-invasion bone cutter is convenient to operate. When the operations are performed, the longitudinal minimal-invasion bone cutter provides convenience for transverse traction of bone blocks and meets needs of angiitis treatment. The bone cutting operations performed by the aid of the longitudinal minimal-invasion bone cutter belong to minimal-invasion operations, do not damage nerves, blood vessels, soft tissues and periostea, have small invasion, facilitate reconstruction and union of bones, and meet needs of longitudinal traction treatment of the tubular bones. By means of the longitudinal minimal-invasion bone cutter, safety and accuracy of the longitudinal bone cutting operations of the tubular bones are improved, medical workers can conveniently perform the operations, and the operation effect is guaranteed.

A bone cutting device having a cylindrical body that has cutting teeth on one end, a shaft extending from another end of the body for attachment to a drill, which shaft can provide cooling water to the body, and a drill extending beyond the cutting teeth for contacting the bone prior to the cutting teeth contacting the bone.

A bone cutting guide block has a cutting tool guide surface and a navigation mount for a navigation tracker component for computer aided positioning of the guide for a resection procedure. In various embodiments, the guide includes a rotation means. Preferably, a swivel with a pivot apparatus is provided to limit rotation to permit controlled flexion-extension angle about the pivot with respect to the cutting guide surface. A fixing member through the swivel permits for varus-valgus adjustment of the guide surface. Optionally, a positioning actuator and / or biased resistance actuator implements more regulated flexion-extension angle adjustment with the swivel. Various traversing mechanisms, such as a threaded wheel or pivoted cam tool permit controlled proximal-distal adjustment of the cutting guide surface.

Bone fixation devices and plates are disclosed. The bone fixation device includes a first portion, a second portion, and a third portion. The first portion includes at least one opening. The second portion includes at least one second opening. The third portion is positioned between the first portion and the second portion and is configured to guide the cutting of a bone. The bone fixation plate includes a first plate portion, a second plate portion, and a third plate portion. The first plate portion includes at least one screw hole for receiving a first bone screw. The second plate portion includes at least one slot for receiving a second bone screw. The third plate portion is positioned adjacent to the first and second plate portions and is configured to guide bone cutting A method of altering a bone using the bone fixation devices and plates is also disclosed.

A system for cutting bone includes a cutting guide including a metal block having a guide surface provided thereon, and an oscillating tip saw having a cutting blade assembly extending from a distal end thereof. At least one element of the cutting blade assembly is magnetic for generating a magnetic attraction to the guide surface of the cutting guide so as to control the orientation of the cutting blade assembly during a bone cutting procedure. The cutting guide may also be magnetic.

A device for positioning a cutting guide with respect to a bone comprising a body forming the cutting guide or intended to be fixed to the cutting guide; a least two contact members intended to freely contact the bone; and adjustment means for individually varying the relative position of the body with respect to each contact member.

Porous spacers (100) are provided for foot and ankle fusion. The porous spacers disclosed herein may be implanted between separate bones of a joint or between two segments of a single bone following an osteotomy procedure. Such spacers may be used in conjunction with an ankle resection system which includes a resection frame (150) and a resection guide (170). The resection frame can be anchored to the distal tibia and / or the talus and provides an opening (155) through which a bone cutting element can pass for cutting underlying bone. The resection guide can include one or more cutting slots (169, 171, 172) and the resection guide can be coupled to the resection frame with the one or more cutting slots positioned over the opening in the resection frame so that the bone cutting element can pass through the one or more cutting slots and through the opening in the resection frame for cutting the distal tibia and / or the talus.

The invention relates to an individualized reversal design and manufacturing method for a full knee joint replacing prosthesis. The method comprises the following steps that 1, three-dimensional digital models of the thighbone and the tibia are built on the basis of the medical image data of the knee joint of a patient; 2, virtual bone cutting software is used for respectively carrying out simulated bone cutting on the three-dimensional digital models of the thighbone and the tibia; 3, the reversal design of CAD (computer-aided design) models of a thighbone replacing prosthesis, a tibia replacing prosthesis and a tibia gasket prosthesis is carried out; 4, the full knee joint replacing prosthesis is manufactured according to the CAD models of each prosthesis through the 3D (three-dimensional) printing technology. The method provided by the invention has the advantages that on the basis of the original bone structure of the patient, the virtual knee joint replacing operation bone cutting form is combined, the structural form of the replacing prosthesis is subjected to reversal design, the structural form consistency of the cut bone and the replacing implanted body structure is realized to the greatest degree, and the optimum matching between the prosthesis and the individual bone form is reached. In addition, the laser selective melting 3D printing technology is used for manufacturing the designed replacing prosthesis, the optimum matching between the prosthesis and the knee joint bone cutting surface is ensured on the basis of the minimum bone cutting quantity, and the effect optimization is reached.