16 results about "Joint line" patented technology

Embodiments of the inventive concepts disclosed herein are directed to an angular digital device for joint deformity or imbalance. A device formed from a dense soft material shaped to fit a digit with straight segments and angled transitions at the interphalangeal joint levels such that rotational force(s) are created at the joint line(s). Additionally, an ‘open transition’ design with a dorsal strap element is described, and a design with an additional moldable, semi-rigid component added. A retention strap is described to prevent the splint from migrating off during sleep.

The present invention provides an access device for accessing an intervertebral disc having an outer shroud including an access shroud having a larger diameter (approximately 16 mm to 30 mm) from the skin down to the facet joint line and an inner shroud having a second smaller diameter (approximately 5 mm to 12 mm) extending through the access shroud and down to the level of the intervertebral disc. This combines the advantages of a direct visual microsurgery / small incision approach and a percutaneous "super-MIS" technique.

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.

The present invention discloses a method and device for restoring three-dimensional posture information. In the above method, a first frontal image of a current human body facing a camera device is obtained; multiple joints in the first frontal image are identified, and the length information of the rigid bones corresponding to each of the multiple joints in the first frontal image is determined; a second frontal image of the current human body facing the camera device after changing its posture is obtained, wherein the current human body changes its posture while keeping the hip joint line parallel to the imaging plane of the camera device, and the distance between the current human body and the imaging plane of the image remains unchanged; multiple joints in the second frontal image are identified, and the projection coordinate position information of the rigid bones corresponding to each of the multiple joints on the imaging plane of the image is determined; and the posture information of the current human body in the third dimension orthogonal to the imaging plane is restored. The acquisition cost of model samples and the computing power requirements for training models are reduced, and the amount of calculation is greatly reduced.

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.

Embodiments of the inventive concepts disclosed herein are directed to an angular digital device for joint deformity or imbalance. A device formed from a soft material shaped to fit a digit with straight segments and angled transitions at the interphalangeal joint levels such that rotational force(s) are created at the joint line(s). Additionally, an ‘open transition’ design with a dorsal strap element is described, and a design with an additional moldable, semi-rigid component added. A retention strap is described to prevent the splint from migrating off during sleep.

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.

The present invention provides a method and system for intelligent osteotomy and correction of lower limbs before 3D surgery, including: a feature point acquisition module, a mechanical axis construction module, a joint line construction module, a measurement module, an anatomical axis construction module, a cutting surface positioning module, an osteotomy module, a rotation axis determination module, a correction angle determination module, an automatic correction module, and a manual adjustment module. The present invention can achieve three-dimensional precise measurement through the measurement module; the positioning accuracy during the operation can be improved through the cutting surface positioning module, and the success rate and safety of the operation can be increased; and the surgical prediction model of coronal valgus deformity and coronal angular deformity of the lower limbs can be established through the simulated osteotomy, automatic correction and manual adjustment modules.

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.

Methods and apparatus for planning and / or carrying out a total knee replacement surgical procedure on a knee of a leg of a patient are described. Anatomical data for the leg of the patient is obtained, which allows the femoral mechanical axis, the tibial mechanical axis, and the joint line of the knee to be determined. A planned proximal tibial cut angle and a planned distal femoral cut angle are determined. A total knee replacement procedure is carried out on the knee of the patient such that a distal femoral cut is made using the planned distal femoral cut angle and a proximal tibial cut is made using the planned proximal tibial cut angle.

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.