42 results about "Knee extension" patented technology

A knee brace functions to extensionally center and thereby enhance patellar function. The brace comprises an upper bracket assembly, a lower bracket assembly, and certain torsional spring assemblies. The upper and lower bracket assemblies comprise leg-receiving bracket portions and certain axial support structure extending from the bracket portions to bracket junctions. Each spring assembly comprises a torsional spring element and an elastically compressible core element. The torsional spring elements compressibly receive the core elements. The torsional spring elements are actuable for imparting restorative resistance forces, and the core elements function to damp the restorative resistance forces. The damped restorative resistance forces function to safely enhance quadriceps muscle contraction during knee extension. The enhanced quadriceps muscle contraction functions to center the patella during knee extension, and thereby enhance patellar function. The brace may be attached to an anchored leg-covering garment for further restricting axial displacement relative to the leg.

A knee extension therapy apparatus is described. The apparatus is designed for use by a patient in a recumbent position having the foot of his leg to be treated elevated to a level above the surface upon which the patient user is resting. The knee extension therapy apparatus can be collapsed for easy transport.

A knee brace functions to extensionally center and thereby enhance patellar function. The brace comprises an upper bracket assembly, a lower bracket assembly, and certain torsional spring assemblies. The upper and lower bracket assemblies comprise leg-receiving bracket portions and certain axial support structure extending from the bracket portions to bracket junctions. Each spring assembly comprises a torsional spring element and an elastically compressible core element. The torsional spring elements compressibly receive the core elements. The torsional spring elements are actuable for imparting restorative resistance forces, and the core elements function to damp the restorative resistance forces. The damped restorative resistance forces function to safely enhance quadriceps muscle contraction during knee extension. The enhanced quadriceps muscle contraction functions to center the patella during knee extension, and thereby enhance patellar function. The brace may be attached to an anchored leg-covering garment for further restricting axial displacement relative to the leg.

A rehabilitation device for legs has a foot piece mounted on a set of track rails, the foot piece is movable through knee extension and flexion, as well as through an elastic band looped around the back. By moving the foot piece, users are able to redevelop and strengthen muscles in the lower leg. Accompanying the foot piece on the track is a slider. The slider measures the distance the user is able to move the foot piece through a plurality of numbered holes in line with the track.

A knee-stretching device and methods of increasing knee range of motion in extension are disclosed. The knee-stretching device allows a patient to self-stretch and acts as a first class lever, applying force supplied by the patient's arms to the knee through the distal portion of the leg. The knee-stretching device can apply traction, varus, and valgus forces in addition knee extension force. Disclosed treatment methods include the use of the knee-stretching device before surgical intervention.

A knee extension treatment apparatus for applying a downward force to an upper surface of a user's leg while the leg is supported by the knee extension treatment apparatus, for facilitating the straightening of the leg when bent at the knee, according to one embodiment of the present invention comprises a base frame assembly, an ankle support connected to the base frame assembly, first and second strap assemblies secured to the base frame assembly, each strap assembly being secured at one end and constructed and arranged to lay over the upper surface of the user's leg, a corresponding opposite end of each strap assembly being movable by the user whereby pulling each corresponding opposite end creates a corresponding downward force on the upper surface of the user's leg.

An apparatus suitable for imitating one or more muscle members of a human user during physical therapy, wherein the apparatus is configured to be used in conjunction with the human user having a waist and a leg having a knee. The apparatus includes an adjustable waist belt configured to be secured around the human user's waist and a lower leg support configured to encircle the human user's leg in a vicinity of the knee. The apparatus further includes an elastic member configured to provide an adjustable tensile resistance between the waist belt and the lower leg support.

The invention discloses an osteotomy template for femur extramedullary positioning, and belongs to an auxiliary instrument for an artificial knee joint primary replacement operation. The osteotomy template is used for positioning for distal femur osteotomy in the artificial knee joint primary replacement operation, comprises a tibia surface guide plate (1) and a distal femur osteotomy guide plate (2), and is characterized by further comprising a connecting rod (3), an extramedullary positioning rod (4) and a distal femur osteotomy guide plate fastening nail (5); the tibia surface guide plate (1) can be connected with the distal femur osteotomy guide plate (2) through the connecting rod (3). Through application of the osteotomy template to the artificial knee joint replacement operation, the following advantages can be realized: opening of a femur medullary cavity is not needed, injury and bleeding are reduced, a minimally invasive effect is realized, the pain of a patient is relieved, the knee extension and flexion gaps can be directly determined, osteotomy for several times is not needed, and osteotomy is reduced to the most extent; the osteotomy template is a tool being simple to operate; through adoption of the osteotomy template, the operation duration is shortened, and no any additional cost for preoperative preparation is needed.

Disclosed is a passive gravity assist flexion and / or extension device, principally for regaining knee joint range of motion flexibility; having such arrangement to provide appropriate content vertically stable elevated under knee support of the posterior intersection, concerning the femur and tibia of an impaired knee joint and / or concerning the subtalar joint (ankle); whereby promoting gravity assist passive flexion and / or extension towards gradual content knee joint muscle stretching. The disclosed device arrangement, being comprised of a padded solitary horizontal support bar, capable of desired lateral rotational movement, while firmly affixed mid-span atop a vertical linear traveling wholly enclosed height adjustable threaded rod. Whereby adjustable rod thread engagement means, establishes and maintains desired horizontal support bar height position. Furthermore, the disclosed device utilizes a center base foundation arrangement providing a resolute perpendicular stable knee support means.

A knee extension treatment apparatus for applying a downward force to an upper surface of a user's leg while the leg is supported by the knee extension treatment apparatus, for facilitating the straightening of the leg when bent at the knee, according to one embodiment of the present invention comprises a base frame assembly, an ankle support connected to the base frame assembly, first and second strap assemblies secured to the base frame assembly, each strap assembly being secured at one end and constructed and arranged to lay over the upper surface of the user's leg, a corresponding opposite end of each strap assembly being movable by the user whereby pulling each corresponding opposite end creates a corresponding downward force on the upper surface of the user's leg.

A knee extension assist device that includes: a frame, a support structure, a base and an articulated knee brace. The frame has a first section pivotably connected to a second section by a pair of hinges. The support structure is slidably attached to the frame to provide pivotal movement of the two sections. The base includes a motor that moves the frame between extended and retracted positions. The articulated knee brace receives a patient' leg and has a pair of upper legs connected by a pair of hinges to a pair of lower legs. A pair of shafts connects the hinges in the brace to the hinges on the frame and a pair of connecting members connects the lower legs to the second section of the frame. The pivotal movement of the frame causes a force to be exerted on the soft tissues in the knee of the patient.

A helmet supported by a vertical extension, extending from the rear-center of the helmet to the rear-center of shoulder pads or shoulder harness. The fixed in-place helmet is supported above the wearer's head, without relying upon the wearer for support, and permits the wearer to move his head in all directions. Shock absorbing material is provided between a portion of the space between the top of the head and the inside of the helmet, leaving sufficient room for head motion. The vertical extension resists elongation or compression along the vertical axis when impacted, but undergo flexure displacement in any lateral direction, followed by shape recovery after impact. The vertical extension may be adjustably attached to either the helmet or the shoulder pads.

A helmet features a fixed length vertical extension, originating at the rear-bottom-center of the helmet, with height adjustable features at the bottom of the extension, connected to a fixed bracket, at the rear-top-center of current state-of-the-art shoulder pads or shoulder harness. The fixed In-place helmet is located above the head, without contact, and permits the wearer to move his head in all directions. A shock absorbing cap is worn and fills a portion of the space between the top of the head cap and the inside of the helmet, leaving sufficient room for head motion. There are no moving parts in the assembled system. The vertical helmet extension when attached to the shoulder pad bracket will resist elongation or compression along the vertical axis when impacted, but undergo flexure displacement in any lateral direction, followed by shape recovery after impact.

The present invention provides a tibial prosthesis which comprises a tibial gasket which moves flat along the forward and the backward directions at a tibial support and the tibial support which is connected with a close end of the tibia. When a knee joint is at the complete knee extension position, the tibial gasket is under the free state along the forward and the backward directions at the tibial support. When the knee joint is over extended, the front positioning face of the tibial gasket is contacted with the inner surface of a front positioning block at the tibial support, so as to ensure that the tibial gasket forward movement distance is limited to avoid damaging the front soft tissue of the knee joint. When the knee joint is at the deep bending knee position, the back oblique positioning face of the tibial gasket is contacted with an incline at a back positioning block at the tibial support, so as to ensure that the tibial gasket backward movement distance is limited to avoid damaging the back tissue of the knee joint. At the same time, the back oblique positioning face of the tibial gasket is matched with the incline at the back positioning block at the tibial support, so as to prevent athe knee prosthesis dislocation caused by lifting the tibial gasket during the deep bending knee position of the knee joint.

A modular device is configured to provide different levels of knee extension to a patient by being moveable between an assembled or “rest” configuration and a detached or “therapy” configuration. The device includes a proximal section with an inclined upper surface and a separate distal section with an inclined upper surface. When attached, the proximal and distal sections form a single continuous incline for supporting a patient's leg. At least one of the sections also includes an ankle supporting cavity that holds the patient's ankle and heel and provides greater stretching / extension of the patient's knee.

A helmet features a fixed length vertical extension, originating at the rear-bottom-center of the helmet, with height adjustable features at the bottom of the extension, connected to a fixed bracket, at the rear-top-center of current state-of-the-art shoulder pads or shoulder harness. The fixed In-place helmet is located above the head, without contact, and permits the wearer to move his head in all directions. A shock absorbing cap is worn and fills a portion of the space between the top of the head cap and the inside of the helmet, leaving sufficient room for head motion. There are no moving parts in the assembled system. The vertical helmet extension when attached to the shoulder pad bracket will resist elongation or compression along the vertical axis when impacted, but undergo flexure displacement in any lateral direction, followed by shape recovery after impact.

The invention discloses a method for simulating a passive dynamic state of muscles of limbs of a human body by a robot. A method for simulating different levels of elbow flexion or knee flexion tension of the human body and a method for simulating different levels of elbow extension or knee extension tension of the human body are included. The robot is provided with a base, a shoulder joint assembly, a large arm, an elbow joint assembly, a small arm and a palm which are sequentially connected, the shoulder joint assembly can drive the large arm to rotate in all directions, and the shoulder joint assembly can drive the small arm to move in flexion and extension. An operator can observe and feel the motion state of the robot in the simulation process, and through repeated experience, the practical skills of a human body tension inspection method can be quickly mastered.

A knee extension training device is provided with knee abutment rolls, heel abutment rolls and feet anchor rolls to facilitate a user from standing on the device in an upright manner with the knees, the heels, and the feet abutting the respective abutment rolls such that knee extension stretching and flexion exercise can be carried out by utilizing the user's own body weight.

The invention discloses an osteotomy template for femur extramedullary positioning, and belongs to an auxiliary instrument for an artificial knee joint primary replacement operation. The osteotomy template is used for positioning for distal femur osteotomy in the artificial knee joint primary replacement operation, comprises a tibia surface guide plate (1) and a distal femur osteotomy guide plate (2), and is characterized by further comprising a connecting rod (3), an extramedullary positioning rod (4) and a distal femur osteotomy guide plate fastening nail (5); the tibia surface guide plate (1) can be connected with the distal femur osteotomy guide plate (2) through the connecting rod (3). Through application of the osteotomy template to the artificial knee joint replacement operation, the following advantages can be realized: opening of a femur medullary cavity is not needed, injury and bleeding are reduced, a minimally invasive effect is realized, the pain of a patient is relieved, the knee extension and flexion gaps can be directly determined, osteotomy for several times is not needed, and osteotomy is reduced to the most extent; the osteotomy template is a tool being simple to operate; through adoption of the osteotomy template, the operation duration is shortened, and no any additional cost for preoperative preparation is needed.

The present invention concerns a system that is useful to apply controlled, gradual muscular stretching, and is particularly useful for knee extension therapy.

The invention discloses a knee joint orthosis with power-assisted knee extension and flexion, which comprises an adjustable knee joint orthopedic support. Two sets of power-assisted damping devices are respectively arranged on both sides of the adjustable knee joint orthopedic support. Each set of power-assisted damping devices includes Booster leaf spring, damping bracket, leaf spring fixing block and bracket fixing block. The damping bracket is formed by connecting the leaf spring frame and the sliding rod. There is a long sliding hole in the sliding rod, and a single anti-loosening screw is fixed through the long sliding hole. on the bracket fixing block, so that the slide bar can slide and be rotatably arranged on the bracket fixing block. The knee orthosis with knee extension and flexion assistance disclosed by the present invention provides significant support force for patients with weak muscles or suffering from knee osteoarthritis when going up and down stairs, squatting, etc. It provides obvious assistance, which can prevent the risk of excessive knee flexion, strain and even fall, and is beneficial to reduce strained knee joints and relieve pain.

A device and method for measuring the amount of knee extension loss, hyperextension, or extensor length associated with arthritis, trauma, surgery or other medical conditions. This device and method includes measuring the difference in heel heights of a patient while patient is lying prone on a table with their legs, at the level of their knee caps, off the table. This device and method also measures extensor length in a patient's knee joint, by assessing heel height difference while a patient is lying prone on a table with a prone knee bend. This device and its methods provide accurate distance measurements that correlate to knee straightness and flexibility; these distinguishing metrics are unattainable by a standard “disc” goniometer. In addition, this device permits convenient measuring of a knee's mobility for two unique perspectives, namely in prone with legs straight or with a knee bent.

A knee extension training device is provided with knee abutment rolls, heel abutment rolls and feet anchor rolls to facilitate a user from standing on the device in an upright manner with the knees, the heels, and the feet abutting the respective abutment rolls such that knee extension stretching and flexion exercise can be carried out by utilizing the user's own body weight.