90results about "Wrist joints" patented technology

An instrument system includes a first cut guide and an actuation instrument. The actuation instrument includes an upper portion having a handle and a first cannulation, and a lower portion releasably couplable with the upper portion. The lower portion includes a shaft, a second cannulation, wherein the second cannulation is coaxial and in fluid communication with the first cannulation, and a paddle configured to abut a resected surface of a first bone. The instrument system also includes a compression mechanism releasably couplable with the lower portion, the compression assembly couplable with the first bone and a second bone The compression assembly includes an actuator configured to bias at least one of the first bone and the second bone toward the other of the first bone and the second bone. A method for using the instrument system is also disclosed herein.

The present disclosure relates to a prosthesis (400) configured for implantation in a carpometacarpal joint in the wrist, the prosthesis comprising a first and a second implant part member (405a,b) configured to be screwed into a radius and metacarpal bone respectively. Each implant part member (405a,b) comprising an articulation member (420a,b) configured to be received in the bone fixation member (410a,b) in a releasable manner. The articulation members (420a,b) comprise orientation pins (423) configured to be inserted into bore sections of the bone fixation members 410a,b. When seated in the bore sections, the first portions of the articulation members (420a,b) with the orientation pins (423) are substantially centered along the central axes of the bone fixation members (410a,b), thereby forming common central axes extending through the bone fixation members (410a,b) and the articulation members (420a,b). The radius articulation member (420a) comprises a replacement articular surface configured for articulation with a replacement articular surface located on the metacarpal articulation member (420b). The radius replacement articular surface has (420a) a configuration that is asymmetric about the common central axis of the radius bone fixation (410a) and articulation members (420a). The bore sections have cross-section (419) extending perpendicularly to the central axis defining a first polygonal outline (429). The orientation pins (423) have cross-sections defining a second polygonal contour line, such that when the orientation pins (423) of the articulation members (420a,b) are seated in the bores of the bone fixation members (410a,b), rotation of the articulation members (420a,b) in relation to the bone fixation members (410a,b) is prevented.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the femorotibial joint, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.

The customized artificial meniscus prosthesis comprises a meniscus body, a joint cotyle is arranged in the middle of the meniscus body, a meniscus joint protrusion capable of simulating the shape and the movement track of a meniscus is installed in the joint cotyle, and a center nail is fixedly connected to the top of the meniscus joint protrusion. The free end of the center nail extends out of the lunar bone body and is arranged in a head-shaped bone of the wrist of the human body, and a plurality of sets of ligament suture holes are further formed in the back side of the lunar bone body. The customized artificial lunar bone prosthesis provided by the invention aims to be applied to lunar bone replacement surgery, mainly aims at treating advanced lunar bone ischemic necrosis caused by non-traumatic or traumatic factors, and is beneficial to improving the stability of the prosthesis and improving the joint activity; basic biomechanics and clinical experiment research verify that the prosthesis has good mechanical properties and clinical curative effects, promote development of the lunar bone prosthesis, enable more patients to retain wrist joint movement, create more values for society and families, and contribute to achieving the goal of healthy China.

The present disclosure relates to an implant having a proximal portion, a distal portion and a central portion positioned between the proximal portion and the distal portion. The implant further includes a longitudinal axis with the proximal portion, the distal portion and the central portion being centered along the longitudinal axis. Further disclosed is an implant system that includes an implant having a proximal portion including an opening, a distal portion including a threading, a tip, and a tapping feature at the tip, and a central portion having at least one flat on an outer surface The central portion is disposed between the proximal and distal portions. The implant system also includes an insertion instrument configured to be releasably coupled with the implant.

A modular bone implant for affixation to a bone having a bone end surface and a bone side surface oriented at an angle with respect to each other. The implant comprises an anchor seat with an inner seat surface configured for abutting the bone end surface, and an elongate stem extending from the anchor seat with a proximal end portion, a distal end portion and a stem long axis. The proximal end portion comprises a planar surface obliquely angled relative to the stem long axis and configured for positioned placement under the bone side surface. At least one fixating element extends from the anchor seat adjacent the stem, having a fixator long axis parallel to the stem long axis and a length shorter than that of the stem. The implant may include a connecting portion configured to breach the bone side surface for attachment to a bone plate, which may be covered by a fixation plate.

A method of securing bones for fusion includes positioning an implant guide sleeve on a first bone, a second bone, and across a separation between the first bone and the second bone, the method further includes using the implant guide sleeve to guide creation of a first implant hole in the first bone and to guide creation of a second implant hole in the second bone, aligning an inserter operably connected to the implant with the implant guide sleeve, and advancing the inserter relative to the implant guide sleeve to position the implant in contact with the first bone and the second bone, wherein the implant bridges the first bone and the second bone.

The present application relates to the technical field of surgical robot control, and a laser osteotomy forming assisted ankle joint replacement surgery robot control method and system, comprising: using a surgical robot to cut and shave a simulated ankle bone to obtain an original osteotomy depth and a target sound wave signal group, identifying an osteotomy laser feature group of the target sound wave signal group, adjusting an original laser parameter group to obtain a replacement laser parameter group, performing a laser osteotomy test based on the replacement laser parameter group to obtain an adjusted osteotomy depth and an adjusted sound wave signal set, identifying an adjusted laser feature group set of the adjusted sound wave signal set, calculating a correlation intensity value, and determining a target laser parameter group set based on the correlation intensity value. The present application can improve the stability and accuracy of the laser osteotomy forming assisted ankle joint replacement surgery robot in cutting and shaving under complex geometric and complex material conditions, and improve the intelligent degree of the surgical robot control.

A talonavicular joint prosthesis includes a navicular component configured to be implanted in a navicular bone and including a base and a surface having an articulation recess formed therein; and a talar component configured to be implanted in a talus bone and including a bearing section configured to rest within the articulation recess. The talar component and the navicular component are shaped such that, when brought together, there is more conformity between the navicular component and the talar component in a dorsal-plantar plane than in a medial-lateral plane.

A method of modifying a bone surface for receiving an implant includes: positioning a contour guide at a first bone and a second bone and across a separation between the first bone and the second bone; using the contour guide to modify a surface region of at least one of the first bone and the second bone to form a modified surface region at one or both of the first bone and the second bone; and positioning an implant in contact at least with the modified surface region.

An improved surgical system and procedure for correcting a deformity between first and second bones using an alignment guide based on a correction factor. The correction factor can be based on a virtual model of the first and second bones in a deformed configuration and a corrected configuration. In the virtual corrected configuration, first and second virtual axes can be fixed in the respective first and second bones. When reverted to the virtual deformed configuration, the orientation of the first and second axes can be used to determine the correction factor. The alignment guide is used to insert one or more k-wires into each of the first and second bones in a deformed configuration. A correction guide is passed along the k-wires to rotate and / or translate the first bone relative to the second bone into the corrected configuration.

A bone part is repaired by a process. A first implant is attached to a first bone part. The first implant corresponds to an intraoperatively defined or an intraoperatively selected cutting path. A preoperatively defined second implant is attached to the first implant. The first implant and the second implant together augment the first bone part.

A system for deploying a fixation member into an aperture of a bone fastener includes a guide having a body that includes a proximal end and a distal end. The guide includes a guide member coupled to the body near the proximal end. The guide member is configured to guide placement of the fixation member to secure the bone fastener. The system includes an engagement member coupled to the body near the distal end. The engagement member is configured to engage the bone fastener such that the guide member is rotatable, relative to the bone fastener, about an engagement axis to the guide member at any of the plurality of relative orientations about the engagement axis.

Alignment instruments may include joint-line referencing systems having an alignment arm having a body with first and second portions defining first and second sides. The first portion has at least one first pin tube through-hole extending from the first to the second side. The second portion has a first opening on the first side. A pin tube guide member is receivable in the first through-hole. The pin tube guide member has a passageway therethrough. An angelwing alignment member includes a portion receivable in the first opening of the alignment arm. An alignment foot is secured to the second portion, and the alignment foot has a handle and a shim. The shim is positionable in a joint between a first bone and a second bone, the alignment arm is alignable relative to a first bone, and the pin tube guide is operable for securing a pin into the first bone

An implant system for dynamic stabilization of a syndesmotic joint. The system includes a soft bone anchor, a dynamic bone anchor, and a tether coupled to and extending between the soft bone anchor and the dynamic bone anchor. First and second retention portions of the tether are knotlessly coupled to the dynamic bone anchor, and an intermediate portion of the tether extending between the first and second retention portions passes through the soft bone anchor. An inner portion of the intermediate portion extends to and is elastically coupled to the dynamic bone anchor. The system further includes an insertion and tensioning instrument, the soft bone anchor being removably held on a free end of the first portion of the instrument, and the dynamic bone anchor being removably held on at least one of the first and second portions of the base.

An implant system for dynamic stabilization of a syndesmosis joint,. The system includes a soft bone anchor, a dynamic bone anchor and a tether coupled to and extending between the soft bone anchor and the dynamic bone anchor. The first and second retention portions of the tether are knotlessly coupled to the dynamic bone anchor, and an intermediate portion of the tether extends between the first and second retention portions and passes through the soft bone anchor. A medial portion of the intermediate portion extends into the dynamic bone anchor and is resiliently coupled to the dynamic bone anchor. The system further includes an insertion and tensioning instrument, the soft bone anchor being removably retained on a free end of a first portion of the instrument, and the dynamic bone anchor being removably retained on at least one of the first portion and a second portion of the instrument.

A system and method fare provided for preparing the distal tibia in an ankle replacement via an extra-medullary jig. An extra-medullary jig or C-bracket is positioned on the tibia with a registration reference and positioned with respect to a resection in the distal tibia via an anterior mounting block which is independent of the surface of the tibia. The mounting block allows the adjustment of the stem cartridge with respect to the registration reference such that the stem cartridge is properly aligned within the resection. The C-bracket is further attached to the tibia via an adjustable proximal alignment arm which attaches to a pin embedded in the proximal tibia. The C-bracket aligns the tibia, foot and ankle and the trajectory of the reamer, and is universal with respect to the left and right ankle.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused 2024 / 064830 by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the metatarsal phalangeal joint or other joint of the foot or ankle, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.WO

A system for metatarsal phalangeal joint fusion includes a hinged guide; a trajectory guide attachable to the hinged guide; and an anchoring wire to attach the hinged guide to a bone.

Implants, systems, instruments, methods, and kits for metatarsophalangeal joint arthroplasty may include metatarsal arthroplasty implants, repositioning guides, broach tools, inserter tools, and sterilizable packaging configured to facilitate metatarsal arthroplasty surgical procedures. The metatarsal arthroplasty implants may generally include an articular member having a convex articular surface, a concave bone-facing surface opposite the convex articular surface, and at least one side surface intermediate the convex articular surface and the concave bone-facing surface, as well as a central shaft sized for insertion into a metatarsal bone having a central shaft longitudinal axis, a central shaft proximal end coupled to the concave bone-facing surface of the articular member, and a central shaft distal end extending away from the concave bone-facing surface of the articular member along the central shaft longitudinal axis.

A method of modifying a bone surface to receive an implant includes placing a contour guide on a first bone and a second bone across a separation between the first bone and the second bone, modifying the surface area of ​​at least one of the first bone and the second bone using the contour guide to form the modified surface area on one or both of the first bone and the second bone, and positioning an implant in contact with at least the modified surface area.

A hand tool, method, and system for distracting an articulating insert from a tibia tray are disclosed.

A screw includes a screw head having a bevel and an elongate shaft attached to the screw head. The shaft has a central longitudinal axis. A tip is attached to the shaft, distal from the head. A method in implanting the screw into a bone or bone fragment is also disclosed.

A talar bone plate for use with a multi-component ankle prosthesis is disclosed that has a body having a medial side, a lateral side, an upper surface, a lower surface, a medial-anterior end, a lateral-anterior end, a medial-anterior portion that extends out in anterior direction beyond the lateral-anterior side, and a posterior side, where a length between the medial-anterior end and the posterior side is greater than the length between the lateral-anterior end and the posterior side near the lateral side of the body, where the body having at least one elongated screw hole provided in the medial-anterior portion and a plurality of screw holes provided in the area between the at least one elongated screw hole and the posterior side.

Described here are self-contained surgical navigation systems which include a head-worn display device to be worn by a user during surgery. The system includes a display generator for generating a visual display on the display device, and a sensor suite having at least one tracking camera. The system further includes a support module including: a user-replaceable, modular battery that is removably insertable into a housing of the support module, and a processor unit configured to receive data from the sensor suite and calculate a position and an orientation of at least one marker. The support module is electrically coupled to the head-worn display device to provide power and data to the head-worn display device. The display device and the support module together comprise the entire sensing and computing capability of the system, without requiring external sensors, cameras, computers, or other electrical equipment.

Implants, systems, instruments, methods, and kits for metatarsophalangeal joint arthroplasty may include metatarsal arthroplasty implants, repositioning guides, broach tools, inserter tools, and sterilizable packaging configured to facilitate metatarsal arthroplasty surgical procedures. The metatarsal arthroplasty implants may generally include an articular member having a convex articular surface, a concave bone-facing surface opposite the convex articular surface, and at least one side surface intermediate the convex articular surface and the concave bone-facing surface, as well as a central shaft sized for insertion into a metatarsal bone having a central shaft longitudinal axis, a central shaft proximal end coupled to the concave bone-facing surface of the articular member, and a central shaft distal end extending away from the concave bone-facing surface of the articular member along the central shaft longitudinal axis.

The application discloses a split type anatomical radial head joint prosthesis, which comprises a radial head and a radial medullary needle, the radial medullary needle comprises a connecting head and a nail body, the connecting head is connected with the nail body, the axis of the connecting head intersects with the axis of the nail body, and the axes of the connecting head and the nail body are located in the same plane, the included angle between the axis of the connecting head and the axis of the nail body is consistent with the anatomical form of the human radial head, the connecting head is rotationally connected with the radial head, and the rotationally connected surface of the connecting head and the radial head is a spherical surface. The connecting head and the nail body have a certain included angle between the axes, so that the prosthesis is consistent with the anatomical form of the human radial head; meanwhile, the connecting head and the radial head are rotationally connected in the application, and the rotationally connected surface of the connecting head and the radial head is a spherical surface, so that the prosthesis can better adjust the connecting angle of the radial head and the radial medullary needle when implanted in an individual, and the individual difference of the case is maximally adapted, thereby improving the success rate of prosthesis implantation.

A bone plate alignment system includes an alignment guide and a bone plate. The alignment guide includes a body portion, a first arm extending from a first side of the body portion, and a second arm extending from a second side of the body portion. The first and second arms extend from the body portion at a substantially oblique angle relative to one another. The bone plate includes an upper portion having at least one opening configured to receive at least one fastener to facilitate coupling with a first bone, a lower portion having at least one opening configured to receive at least one fastener to facilitate coupling with a second bone, and an intermediate portion disposed between the upper and lower portions, wherein the intermediate portion is configured to be disposed substantially adjacent both the first bone and the second bone.

A bone joint implant (1) has a proximal part (120) for translational motion over the trapezium in a first carpometacarpal joint and a distal part (110) for intramedullary engagement in the first metacarpal bone. An articulating coupling (103, 121, 123) is for multi-axial motion with translational movement over a bone in one part (120) and rotation in the other part (110) about the articulating coupling (121, 103). A flange (105) extends radially and around the coupling to limit relative rotational motion of the proximal and distal parts about the coupling, and to provide resilience for contact between the proximal and distal parts. The flange has a contoured surface (101) matching an abutting surface (125) of the proximal part (122) upon articulation of the parts in use to extreme positions. The flange (105) is included in an insert (100) in a stem (111) of the distal part (110), the flange extending proximally of the stem (111) and prohibiting contact between the proximal part (120) and the stem (111) during articulation.

Disclosed herein is a toe implant for replacing a portion of a human toe joint, as well as a related kit, surgical method, and method of manufacturing. Specifically, the toe implant may include a bearing member having a curved interface surface and a fixation member coupled to the bearing member. The fixation member may include a first portion having a non-porous barrier, and a tapered second portion.