11 results about "Intramedullary rod" patented technology

Provided herein are methods and systems for stabilizing a joint, such as the elbow. The system may include an intramedullary rod configured to be placed in a medullary canal of a bone, a pin, a linking member defining an aperture for receiving the pin, and a connector defining a first aperture and a second aperture, the first aperture configured to receive the linking member. The system may further include a screw extending through the second aperture of the connector and the aperture of the intramedullary rod. The system may be configured to be implanted into a patient.

A distal femoral jig includes an alignment guide and an outrigger component. A segmented intramedullary rod instrument may be used to install the alignment guide on a patient's femur. The alignment guide is configured to contact the distal femoral condyles of the patient's femur so as to align a distal cutting block coupled to the outrigger component. The distal femoral jig may be operated in either a mechanical alignment mode of operation or a kinematic alignment mode of operation. Methods of surgically preparing a patient's femur are also disclosed.

The invention discloses a novel extensible long intramedullary rod and a matched tool, and relates to the technical field of medical instruments, the novel extensible long intramedullary rod comprises a female rod and a male rod, one end of the female rod is provided with a fixed tip, the other end of the female rod is provided with a blind hole, the male rod is sleeved with the blind hole, the fixed tip is used for being connected with the epiphysis of the far end of a long bone, and the end of the male rod is flush with an implantation opening. And the length of the male rod sleeved into the female rod is at least 1 / 2 of the length of the female rod. The extensible long intramedullary rod can effectively fix a long bone, prevent fracture of the long bone and maintain the shape of the long bone, can gradually achieve the purpose of extension along with the growth of the bone, can better maintain the mechanical axis of the bone, has a stronger protection effect on the fracture end, is particularly suitable for being applied to special patients in the department of orthopedics of children, and has a wide application prospect. And intraoperative and postoperative protection of lower limb long bone malformation and fracture caused by osteogenesis insufficiency and congenital long bone artificial joints can be realized.

The utility model discloses a tibial prosthesis intramedullary positioning system which comprises a tibial plateau prosthesis, an eccentric adjusting component and an intramedullary rod. The tibial plateau prosthesis comprises a plateau part and a stand column, the eccentric adjusting component comprises a first connecting part and a main body part, the first connecting part is arranged at the upper end of the main body part, the central axis of the first connecting part and the central axis of the main body part are parallel and spaced, and the first connecting part is coaxially pivoted to the stand column; the intramedullary rod comprises a second connecting part and a rod part, the second connecting part is arranged at the upper end of the rod part, the central axis of the second connecting part and the central axis of the rod part are parallel and spaced, and the second connecting part is coaxially pivoted to the main body part. The position and angle adjustment within the plane range is achieved through the eccentric adjusting component, the position of the intramedullary rod is made to be matched with the tibia marrow cavity, the optimal coverage of the tibia platform prosthesis osteotomy plane is achieved, and the good stress of the tibia extension rod is achieved.

The invention relates to a 3D printing femoral intramedullary and extramedullary biological matching composite fixing prosthesis and an installation method, the 3D printing femoral intramedullary and extramedullary biological matching composite fixing prosthesis comprises a fixing prosthesis body and a far-end prosthesis body, the fixing prosthesis body is formed by an intramedullary fixing component, an extramedullary fixing component and a connecting component in an integrated 3D printing mode, and the intramedullary fixing component is used for being inserted into a femoral medullary cavity of a patient; the extramedullary fixing component is provided with two supporting wing plates which are symmetrically distributed and attached to the surfaces of cortical bones on the two sides of a femur and used for forming biological fixation with the femur, and the connecting component is arranged between the intramedullary fixing component and the extramedullary fixing component and mechanically connects the intramedullary fixing component and the extramedullary fixing component into a whole to form a composite bearing structure crossing the inside and the outside of a medullary cavity. Technical innovations such as arc-shaped medullary rod anatomy adaptation, a double-side clamping wing plate structure, integrated 3D printing connection, a composite fixing mechanism and a simplified mounting mode are fused, and a prosthesis system with stability, long-term firmness, rebuilding feasibility and operation convenience is constructed.

The present invention discloses a femoral drilling kit for unicompartmental knee arthroplasty. The kit includes an intramedullary rod connector for connecting an intramedullary rod to a femoral drill guide and ensuring alignment of the femoral drill guide. This simple, versatile instrument allows for reliable, precise, convenient, and repeatable positioning of the femoral drill guide and osteotomy in situ, meeting the individual needs of individual patients while minimizing the impact of surgical expertise and other subjective factors on surgical outcomes.

An osseointegration augment for an orthopaedic implant comprises an endosteal fixation sleeve and a periosteal fixation collar. The endosteal fixation sleeve surrounds an intramedullary rod and is configured for insertion into a medullary canal, defining an external endosteal osseointegration surface. The periosteal fixation collar surrounds the intramedullary rod and bridges the endosteal fixation sleeve and a resected bone surface, defining an external periosteal osseointegration surface and a bone contacting face for physiological load distribution. The endosteal fixation sleeve and periosteal fixation collar define opposing flat contacting faces, facilitating stable, non-coaxial independent positioning. The endosteal fixation sleeve is spaced from the intramedullary rod, forming an internal gap filled with bone cement. This configuration optimises endosteal and periosteal osseointegration, improves implant stability, and enables intraoperative adjustability to accommodate anatomical variations.

A distal femoral jig includes an alignment guide and an outrigger component. A segmented intramedullary rod instrument may be used to install the alignment guide on a patient's femur. The alignment guide is configured to contact the distal femoral condyles of the patient's femur so as to align a distal cutting block coupled to the outrigger component. The distal femoral jig may be operated in either a mechanical alignment mode of operation or a kinematic alignment mode of operation. Methods of surgically preparing a patient's femur are also disclosed.

A surgical instrument system for use in a total knee arthroplasty includes an intramedullary rod and a reference block. The intramedullary rod is elongated between a proximal rod end and a distal rod end and is adapted for introduction into the medullary space of a femur. The reference block is or can be slid onto the distal rod end and has a block rear side oriented in a proximal direction. The block rear side is adapted to bear on distal condyles of the femur. The reference block is mounted to or mountable on the distal rod end by a bearing element having a reception bore for coaxial and radially form-fit reception of the distal rod end. The bearing element is mounted on the reference block so as to be pivotable relative thereto at least about a pivot axis oriented in an anteroposterior direction.

The invention relates to an apparatus for producing an intramedullary rod spacer, to the use of a casting mold and to a method for producing an intramedullary rod spacer. An apparatus (10) for producing an intramedullary rod spacer (5) comprises a first tube (11), a second tube (12) and a flexible connection (15) for fluidly connecting the first tube (11) to the second tube (12), wherein the first tube (11) and the second tube (12) are positionable at different angles relative to each other. In this manner, the intramedullary rod spacer may be produced intraoperatively and with increased accuracy.