194 results about "Bones head" patented technology

A surgical template system for use in working on a bone comprises: a tool guide block comprising at least one guide aperture for receiving and guiding a tool to work on a bone; locating means comprising a plurality of locating members, each member having a respective end surface for positioning against a surface of the bone; and attachment means for non-adjustably attaching the tool guide block to the locating means such that, when attached, the member end surfaces are secured in fixed position with, respect to each other, for engaging different respective portions of the surface of the bone, and the at least one guide aperture is secured in a fixed position with respect to the end surfaces. Corresponding methods of manufacturing a surgical template system, methods of manufacturing locating means for a surgical template system, methods of fitting a prosthesis to a bone, surgical methods, and surgical apparatus are described.

A joint replacement kit for use in a joint replacement procedure replacing a portion of a body joint. The kit includes a cutting guide and a trial component wherein the cutting guide and trial component are packaged together. There is also provided a method for replacing a portion of a body joint. The method includes providing a joint replacement kit having a cutting guide and a trial component, positioning the cutting guide against an end portion of a bone, cutting the end portion of the bone with a cutting instrument, positioning the trial component to the cut end portion of the bone, and disposing of the cutting guide and trial component.

A bone fixation device is provided with an elongate body having a longitudinal axis and having a first state in which at least a portion of the body is flexible and a second state in which the body is generally rigid, an actuateable gripper disposed at one or more locations on the elongated body, a hub located on a proximal end of the elongated body, and an actuator operably connected to the gripper(s) to deploy the gripper(s) from a retracted configuration to an expanded configuration. Methods of repairing a fracture of a bone are also disclosed. One such method comprises inserting a bone fixation device into an intramedullary space of the bone to place at least a portion of an elongate body of the fixation device in a flexible state on one side of the fracture and at least a portion of a hub on another side of the fracture, and operating an actuator to deploy at least one gripper of the fixation device to engage an inner surface of the intramedullary space to anchor the fixation device to the bone. Various hub designs are disclosed that may be used in combination with other fixation device components.

Surgical guiding tools for surgery on a bone head which include a cutting component, a guiding component and a collar having a patient-specific component are disclosed. The surgical guiding tools are interconnected which ensures secure and accurate placement of the guiding tool and thus guarantees accurate implementation of the pre-operative planning of the surgical intervention.

A bone fastener for use in orthopedic surgery for fixing an implant to bone has a threaded or unthreaded shaft configured to engage bone and a head having a thread on an outer surface to engage the implant. The thread on the head of the fastener has a profile in cross section that includes peaks with a curved shape.

The present invention provides surgical guiding tools for surgery on a bone head comprising a cutting component, a guiding component and a collar comprising a patient-specific component, which are interconnected and which ensure secure and accurate placement of the guiding tool and thus guarantee accurate implementation of the pre-operative planning of the surgical intervention.

The bio-absorbable bone tie with convex head is an elongated band having a convex head portion and is used for securing fragments of a fractured bone together. The elongated band portion includes a plurality of notches defined therein. The convex head portion has a convex shape with smooth, rounded edges and includes a channel or slot to receive a segment of the elongated band portion. At least one lock tooth extends into the channel or slot to engage the notches in the band and prevent the band from slipping back out of the channel, similar to a ratchet and pawl mechanism. The bone tie is constructed of a bio-absorbable material, such as polylactic acid. The leading end of the bone tie is the same color as the receiving opening of a corresponding inserter tool to minimize confusion when installing the bone tie with the inserter tool.

A joint replacement kit for use in a joint replacement procedure replacing a portion of a body joint. The kit includes a cutting guide and a trial component wherein the cutting guide and trial component are packaged together. There is also provided a method for replacing a portion of a body joint. The method includes providing a joint replacement kit having a cutting guide and a trial component, positioning the cutting guide against an end portion of a bone, cutting the end portion of the bone with a cutting instrument, positioning the trial component to the cut end portion of the bone, and disposing of the cutting guide and trial component.

This invention provides a calcaneal plate implanted using a sinus tarsi approach and comprises an anterior section having two locking screw holes, an s-shaped posterior facet section having a four locking holes and which rounds toward the bone at both the inferior and superior edges and is reinforced at the superior edge, and a blade shaped posterior portion having three linearly aligned locking holes and terminating in a tapered portion. There is also, a drill guide assembly having a drill guide column inserted through a hole in a targeting guide and locking to one of the locking holes in the plate, and cannulated drill guide sleeves that lock into holes in the targeting guide in a spaced relation whereby when the targeting guide is locked into the plate, the targeting guide can be used as a handle and wherein locking screws can be implanted percutaneously.

An interlocking bone plate system includes an outer bone plate for being arranged outside a broken bone, an inner bone plate for being installed inside the medullary cavity of the broken bone, and screws for being inserted through and engaged with the outer bone plate and the broken bone and then engaged with the inner bone plate so as to interlock the out and inner bone plates together. The inner bone plate provides an added support in addition to the support provided by the outer bone plate, enhancing the structural strength of the whole bone fixation structure and lowering the risk of failed surgery.

A spinal implant in one embodiment includes an implant for insertion between two opposite spaced vertebrae of a spine, comprising a body having a substantially rectangular cross section and comprising a toothed top retaining member, a toothed bottom retaining member, and a peripheral surface; a three-dimensional matrix structure formed in the body and on the peripheral surface as support; and a plurality of holes formed through at least one of three directions of the three-dimensional matrix structure.

A tool set for preparing a joint, inserting an implant or removing an implant from a joint in an open or less invasive procedure generally comprises a set of nested tools, pin guides, jigs, and / or immobilization elements. The nested tool set comprises at least one pin and at least one cannulated tool. The cannula can comprise tangs that project from the distal end of the cannula. The tangs can be offset such that drilling removes different amounts of bone relative to drilling through a centered drill guide. The cannulated tool kit can comprise at least one tool guide / cannula, drill bits / reamer, syringe, and / or inserter. At least one cannula is positioned over and around the pin position into the joint. The channel of the cannula guides the other tools into the joint.

Instrumentation for manufacturing a bone dowel from human or animal cadaveric bone and instrumentation for evaluating the suitability of the bone and / or dowel for implant use after each step of the manufacturing process is provided. Such instrumentation for manufacturing a bone dowel includes a blanking or coring apparatus, a milling apparatus, a threading apparatus and a tapping apparatus. A gauge is provided to inspect and determine the suitability of the bone dowel at each step of the manufacturing process. By inspecting the dowel being manufactured after each step of the manufacturing process, time and effort which is needlessly wasted during completion of the manufacturing of dowels which are unsuitable for implant use (due to unsuitable bone and / or inaccurate machining of bone) can be avoided. Instrumentation for more accurately positioning bone and the partially manufactured dowel into the instrumentation for machining the dowel is also provided. Such instrumentation includes a gauge for positioning a piece of bone in relation to the apparatus, and mounting blocks for securing the partially manufactured dowel in relation to the milling apparatus.

An intramedullary bone fixation device is provided with an elongate body having a longitudinal axis and an actuator to deploy at least one gripper to engage an inner surface of the intramedullary space to anchor the fixation device to the bone. Methods of repairing a fracture of a bone are also disclosed. One such method comprises inserting a fixation device into an intramedullary space of the bone to place at least a portion of the fixation device on one side of the fracture, providing rigidity across the fracture, and operating an actuator to deploy at least one gripper to engage an inner surface of the intramedullary space to anchor the fixation device to the bone. Various configurations allow a segmented device body to lock in the intramedullary space before and / or after fixation of the bone.

A tendon anchoring device may include an implant having a pair of spaced apart legs for straddling a tendon. A push rod removably attached to the implant may be utilized to guide and push a portion of the tendon into a pre-drilled bore in a bone. A fixation member may be slid along the push rod and threadably engage an inner surface of the pre-drilled bore to thereby anchor the tendon to the bone while a force is applied to the push rod. Once the fixation member has been installed, the push rod may be disengaged from the implant and removed from the bore. The implant may remain permanently straddled over the tendon inside of the bore.

A system and method is disclosed herein for measuring bone slope or tilt of a prepared bone surface of the muscular-skeletal system. The system comprises a three-axis accelerometer for measuring position, rotation, and tilt. In one embodiment, the three-axis accelerometer can be housed in a prosthetic component that couples to a prepared bone surface. The system further includes a remote system for receiving, processing, and displaying quantitative measurements from one or more sensors. A bone is placed in extension. The three-axis accelerometer is referenced to a bone landmark of the bone when the bone is in extension. The three-axis accelerometer is then coupled to the prepared bone surface with the bone in extension. The slope or tilt of the bone surface is measured. In the example, the slope or tilt of the bone surface corresponds to at least one surface of the prosthetic component attached thereto.

The present invention relates to a tool in combination with a set screw for use in spinal implant systems, and more particularly to a tool for the deployment of set screws with a break-off neck portion comprising a handle portion, a stem portion extending from the handle portion, a set screw retaining means, and a driving means extending from the stem portion and disposed opposite the handle portion. The driving means is adapted to allow the installation of the set screw to the bone and applying torque for the shearing of the neck portion thereof, and at the same time is adapted to remove the installed screw portion of the said set screw when needed.

An implant composite material is provided which is for use in the treatment of articular cartilage disorders such as hip joint femur head necrosis and knee joint bone head necrosis, the reconstruction / fixing of a bio-derived or artificial ligament or tendon, the uniting / fixing of a bone, etc. Part of the implant composite material is replaced by bone tissues in an early stage to enable the material to stably bond with a living bone, while the other part retains a necessary strength over a necessary time period. Finally, the implant composite material is wholly replaced by the living bone and disappears.It is an implant composite material having a constitution which comprises a compact composite of a biodegradable and bioabsorbable polymer containing bioabsorbable and bioactive bioceramic particles and a porous composite of a biodegradable and bioabsorbable polymer containing bioabsorbable and bioactive bioceramic particles, the porous composite being united with the compact composite. The porous composite is replaced by bone tissues in an early stage to enable the material to stably bond with a living bone, while the compact composite retains a necessary strength over a necessary time period. Finally, the material is wholly replaced by the living bone and disappears. Consequently, this implant composite material can sufficiently meet desires in this medical field.

A bone plate includes a first through hole extending through the plate along a first longitudinal axis from a proximal surface of the plate to a bone-facing distal surface thereof which, when the plate is placed on a target portion of bone in a desired orientation, faces the bone. An outer wall of the first through hole includes three wall sections provided with projections for receiving a screw head of a bone screw. The three wall sections are straight or convex.

The surgical instrument includes a handle assembly and an elongate body that has first and second ends with the first end being located adjacent to the handle assembly and the second end being moveably connected to an implant engagement assembly. The surgical instrument also has a length control mechanism that includes a gripping portion, a drive shaft and a gear assembly. The surgical instrument further has a locking mechanism that includes a gripping portion, a connecting rod and a coupling end. The length control mechanism functions to adjust the overall length of an implant that is held by the implant engagement assembly before being implanted in vivo. The locking mechanism operates to secure the overall length of the implant following final length adjustment and implantation. A surgical method for using the surgical instrument, a method of fabrication and a spinal implant insertion kit is also disclosed.

A spinal implant includes a body, plate, and bone screws. The body includes a first wall having second and third walls joined thereto to define legs. In an embodiment, the body and plate are of unitary construction. In alternative embodiments, the body is formed from a first material and is configured for positioning between vertebral bodies. In other embodiments, the body is separate from the plate. The plate has a main portion and a flange. The main portion has a first screw hole oriented towards the first vertebral body at an oblique angle relative to the horizontal axis of the body. The flange has a second screw hole oriented towards the second vertebral body and substantially parallel to the horizontal axis. The flange is coupled to the main portion and extends past the main portion. Each bone screw is insertable through a screw hole of the plate for attachment to bone. A kit including a body, bone screws, and a plurality of different plates is also provided.

The invention relates to a method for extracting bone collagen protein from bone of pig, cow and sheep, including: It removes the impurities of the bone. And then it warms up and extracts the bone under high-pressure in the high-pressure extraction tank. And then it separates the oil and melting soup by using oil-water separator. And then it transfers the separated liquid into the enzymolysis can for enzymatic hydrolysis. And then it cools the liquid to 50 deg.C, and then adds liquid complex flavor protease to enzymolysis for eight hours. And then it warms the liquid up to 90 deg.C, and it eliminate enzyme for 30 minutes. And then it adds natural spice and salt. And then it filters the liquid. And then it sterilizes the liquid with a high-temperature sterilization machine. And then it condenses the liquid to dry materials by using double-effect falling film evaporator. And then it dries the dry materials into power by using pressure-type sprayer.

A collapsible bone screw for healing bone fragments across a bone fracture includes an externally threaded inner screw member and an externally threaded outer screw member. The inner screw member is initially screwed into an inner bone portion. An unthreaded portion of the outer screw member is movably joined to the inner screw member. The outer screw member is screwed until it gains purchase in an outer bone portion. As impaction occurs over time, the collapsible bone screw apparatus may shorten in length as the two screw members slide, telescope or otherwise axially move toward each other to shorten the overall length, thereby preventing any portion of the screw apparatus from protruding out of the bone. A bone screw kit of multiple inner and outer screw members are provided as well as a method of surgically fastening bone fragments.

A bone fixation system comprises an elongated implant shaft extending from a proximal end to a distal end along a central longitudinal axis and including a first channel extending from the proximal end to a side opening formed in a side wall of the implant shaft along a first channel axis. The bone fixation system further comprises a bone plate having a first plate portion and a second plate portion, the first plate portion having a first opening extending therethrough along a first opening axis and the second plate portion having a second opening extending therethrough along a second opening axis, the second opening being configured to receive the implant shaft therethrough to permit insertion thereof into a head of a bone.

The present invention discloses an acquisition method for anatomical parameters of femur and acetabulum based on CT three-dimensional sequence image. The method comprises the steps of: acquiring a CT three-dimensional sequence image with femur and acetabulum; segmentation of the femur and the acetabulum: performing coarse segmentation, separation and precise segmentation on the CT three-dimensional sequence image sequentially, to obtain a femoral precise segmentation image and an acetabular precise segmentation image; calculation of anatomical parameter of femur: according to the femoral precise segmentation image, constructing a triangular mesh surface model of a femoral surface, calculating a femoral diameter parameter, a medullary cavity inner diameter parameter and a spherical fitting parameter of a femoral head; and calculation of anatomical parameter of acatabulum: selecting the acetabular precise segmentation image to construct multiple surface points of a triangular mesh surface model of an acetabular surface, and calculating anteroposterior diameter of the acetabulum. According to the method, the CT three-dimensional sequence image is directly processed, and precise segmentation of femur and acetabulum and acquisition of anatomical parameters are rapidly and automatically realized, so as to assist in individualized design and modeling of artificial bone prosthesis.