10 results about "Joint line" patented technology

A surgical guide includes a body having four sides. The body comprises a first base at the first side, a second base at the second side and an elongated extension between the first and second base. The first base defines at least one first hole and the second base defines at least a second hole. The body is sized and configured to be installed above a joint line of a calcaneus and a talus bone and approximately mid-way along a longitudinal axis of a tibia. The first base is configured to receive at least one dowel of a second surgical guide in the at least one first hole and the second base is configured to receive at least one pin sleeve and pin in the second hole. Systems and methods are also disclosed.

A surgical guide includes a body having four sides. The body comprises a first base at the first side, a second base at the second side and an elongated extension between the first and second base. The first base defines at least one first hole and the second base defines at least a second hole. The body is sized and configured to be installed above a joint line of a calcaneus and a talus bone and approximately mid-way along a longitudinal axis of a tibia. The first base is configured to receive at least one dowel of a second surgical guide in the at least one first hole and the second base is configured to receive at least one pin sleeve and pin in the second hole. Systems and methods are also disclosed.

An apparatus for performing minimally invasive procedures, the apparatus comprising: a shaft having a distal end and a proximal end; a handle attached to the proximal end of the shaft; and an end actuation device attached to the distal end of the shaft; wherein the shaft includes a flexible portion, a first joint portion, and a second joint portion, wherein the flexible portion extends distally from the handle, the first joint portion extends distally from the flexible portion, and the second joint portion extends distally from the first joint portion; wherein at least one joint cable extends from the handle to the first joint portion such that the first joint portion deflects when tension is applied to the at least one joint cable; wherein a plurality of joint cables extend from the handle to the second joint portion such that the second joint portion deflects when tension is applied to at least one of the plurality of joint cables.

This invention discloses a line-driven bipedal robot leg structure, including a thigh support, a knee joint motor at the lower end of the thigh support, a lower leg support connected to the output shaft of the knee joint motor, and a foot assembly movably connected to the lower end of the lower leg support. The foot assembly includes a foot fixation member, a heel connected to the rear of the foot fixation member, and a line-driven structure connected to the heel. The line-driven structure includes a first ankle joint motor and a second ankle joint motor, a first drive spool, a second drive spool, a first ankle joint spool, and a second ankle joint spool. A first transmission line is provided between the first drive spool and the first ankle joint spool, and a second transmission line is provided between the second drive spool and the second ankle joint spool. A first crank-rocker structure is provided between the first ankle joint spool and one side of the heel, and a second crank-rocker structure is provided between the second ankle joint spool and the other side of the heel. This invention has the advantages of simple structure and good adaptability.

The invention discloses a segmented curvature symmetric glove arm structure of a glove box, which is used for a rubber glove mould and comprises a mould body, an arm part arranged on the mould body and a joint line extending along the outline of the arm, the arm part sequentially comprises a wrist joint section, a forearm middle section, an elbow hub section, a big arm middle section and an upper arm near-end section in the axis direction, all the sections form mutually orthogonal transverse line segments on a main projection plane and a side projection plane, and the transverse line segment of the main projection plane and the transverse line segment of the side projection plane at the same longitudinal position jointly define an elliptical section; the joint lines are continuously arranged along all the sections, and different curvature radiuses are arranged from the wrist joint section to the forearm middle section, from the forearm middle section to the elbow hub section, from the elbow hub section to the big arm middle section and from the big arm middle section to the upper arm near end section respectively, so that curvature changing in sections is formed in the arm bending and stretching direction; the short axis of the oval section serves as a symmetric line, and the left half die and the right half die of the die body are arranged in a mirror image mode relative to the symmetric line.

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.

Disclosed herein is a method for knee joint balancing. The method can include determining a joint line obliquity of a knee joint and a hip-knee-ankle angle of the knee joint. The method can include comparing the joint line obliquity and the hip-knee-ankle angle to a predetermined value, and adjusting the joint line obliquity and hip-knee-ankle angle of the knee joint if the joint line obliquity and the hip-knee-ankle angle are different from the predetermined value. The joint line obliquity can be any of an extension line joint line obliquity and flexion joint line obliquity.

According to the knee joint preoperative planning method, medical image data of a knee joint are obtained, and the medical image data comprise three-dimensional image data, a lower limb full-length straightening normal position X-ray image and a knee joint flexion preset angle lateral position X-ray image; determining a three-dimensional model of the knee joint bone tissue based on the three-dimensional image data; determining a straightened position thighbone model and a flexion position thighbone model based on the three-dimensional model, the lower limb full-length straightened normal position X-ray image and the knee joint flexion preset angle side position X-ray image; performing position adjustment and joint line intersection angle adjustment on the tibia model, the straightened-position femur model and the bent-position femur model, so that the poses of the adjusted tibia model, the adjusted straightened-position femur and the adjusted bent-position femur model are normal poses of the knee joint in a healthy state, and obtaining a standard knee joint model; the osteotomy planning is carried out based on the standard knee joint model, the osteotomy planning can be automatically carried out through the image data, and the osteotomy precision can be improved.

The disclosure provides a femur and tibia contact surface, length determination, image processing method and system and X-ray camera, and relates to the technical field of determining the contact surface and length of the femur and tibia. The contact surface determination method comprises the following steps: obtaining a femur region mask image and a tibia region mask image corresponding to a to-be-processed knee joint X-ray image; determining an overlapping region corresponding to a femur region mask in the femur region mask image and a tibia region mask in the tibia region mask image; and configuring the overlapping region as a contact surface of the femur and tibia in the to-be-processed knee joint X-ray image. The embodiment of the disclosure can realize the contact surface, length determination and image processing of the femur and tibia.

The invention provides a joint angle determination and dynamic evaluation method and system between a femur and a tibia and an X-ray camera, and relates to the technical field of joint angle determination and dynamic evaluation. The joint angle determination method comprises the following steps: determining a joint angular point between a thighbone central axis and a tibia central axis according to the thighbone central axis and the tibia central axis corresponding to a knee joint X-ray photography image to be processed; and calculating a joint angle between the femur and the tibia based on the joint angular point, a third direction vector corresponding to the central axis of the femur and a sixth direction vector corresponding to the central axis of the tibia. According to the embodiment, the joint angle can be determined.