302 results about "Muscles of the hip" patented technology

A set is provided for creating an offset-resurfacing hip-joint implant. The set includes a 1 to 1.5 mm thick metallic acetabulum shell (1) for insertion into the natural acetabulum, from which only cartilage has been removed, a metallic head cap (2) for placement on the natural hip-joint head, from which only cartilage has been removed, and an inlay (3) for insertion into the acetabulum shell (1) as a sliding partner for the head cap (2). The inlay has a material thickness of 2 to 5 mm. The head cap (2) has a wall thickness which increases constantly from a thickness of 2 mm to 6 mm viewed in cross section in the region of the base edge (6) of the head cap, so that an eccentricity is produced in its outer shape

The invention relates to an external skeleton robot, in particular to a human-simulated external skeleton robot assisting the lower limbs. The human-simulated external skeleton robot assisting the lower limbs aims to solve the problems that an existing external skeleton robot is low in coupling degree of motion space and poor in wearing comfort, reliability and adaptation, and power needed by a motor is large. The human-simulated external skeleton robot assisting the lower limbs comprises an upper body back part, a left leg and a right leg. The left leg and the right leg respectively comprise a hip drive system, a knee drive system and a foot wearing system. A rear side connection board of the waist is in rotating connection with a load installation board. Each hip joint supporting board is provided with a first motor and a first reducer, wherein the first motor is provided with an encoder, and the output end of the first motor provided with the encoder is connected with the input end of the first reducer. Each hip joint connecting board can rotate in the vertical plane. Each thigh stretching board is in detachable connection with the corresponding hip joint connecting board. The output end of a main drive mechanism is connected with each crus connecting board. The lower surfaces of elastic boards are bonded with the upper surfaces of the rubber soles of the feet. The human-simulated external skeleton robot assisting the lower limbs can assist in walking.

In another embodiment, a hip joint navigation jig is provided that includes an anatomical interface comprising a bone engagement portion. A registration jig is also provided that is coupled, e.g., removeably, with the anatomical interface. A rotatable member is provided for rotation about an axis that is not vertical when the jig is mounted to the bone adjacent to a hip joint and the registration jig is coupled with the anatomical interface. An anatomy engaging probe is coupled with the rotatable member for rotation about the axis and is translatable to enable the probe to be brought into contact with a plurality of anatomical landmarks during a procedure. An inertial sensor is coupled with the probe to indicate orientation related to the landmarks, the sensor being disposed in a different orientation relative to horizontal when the probe is in contact with the landmarks.

A device for accessing and distending a joint comprises a distraction structure having a generally tapered distal portion adapted to penetrate a tissue region and create an access space within a joint. The distraction structure also includes a lumen extending from a proximal surface to a distal portion. The device further includes a distention structure deployable through the lumen and adapted to exert a force between a first joint surface and a second joint surface and create a working space. The distention structure may, in some embodiments, include an elongate member having a proximal end, a distal end, and a lumen extending along at least a portion of the length of the elongate member, a first expandable region deployable from a first substantially collapsed position to a second substantially expanded position, the first expandable region adapted to exert a force between the first joint surface from the second joint surface.

The invention discloses a wearable lower limb exoskeleton device, which comprises a waist supporting frame, a waist object carrier, an adjustable hip mechanism, a connecting rod adjustable knee joint mechanism, a connecting rod adjustable ankle joint mechanism, pressure detection shoes, a leg connecting rod, a constraint part and various connecting pieces. Both lower limbs have twelve rotational freedoms, the single lower limb has six degrees of freedom respectively, a hip has two degrees of freedom which finish bending and stretching as well as adduction and abduction movements of a hip joint, two joint axes always intersects at the center of the hip joint of a human body through the adjustment of the hip mechanism, and a knee joint has one degree of freedom which is coaxial with the knee joint of the human body and corresponds to the bending and stretching movement of the knee joint of the human body; and an ankle joint has three degrees of freedom. The device has good consistency of the movement of the hip joint and the movement of the human body during the walking of people; human-machine knee joints have small coaxality and position deviation; and the ankle joint has a compact structure. The device can be used for strengthening the abilities of walking with load and walking for a long time of wearers and detecting walking information of the wearers, and can also be used for helping people with slight obstacle of lower limb movement to normally walk and gradually rehabilitate.

A pelvic support and walking assistance device is disclosed which includes a trunk support member and a thigh lifting member coupled to each other at a pivot joint positioned opposite a hip joint of a user. The device functions to prevent pelvic sway. With a spring coupled with said pivot joint, the device further provides a thigh lifting torque to partially compensate for proximal leg weakness. The spring assistance pivot device includes a winding device that can be adjusted in use for varying forward torque for varying situations.

A laterally-expandable access cannula comprising:an elongated body have a distal end, a proximal end and a lumen extending between the distal end and the proximal end, the distal end of the access cannula comprising a plurality of fingers tapering inwardly as they extend distally, and the elongated body having an internal thread extending along at least a portion of the length of the lumen; andan inner sleeve disposed within the lumen of the elongated body, the inner sleeve having an external thread extending along at least a portion of its length, the external thread of the inner sleeve being in engagement with the internal thread of the elongated body, such that rotation of the inner sleeve causes the inner sleeve to move distally relative to the elongated body, whereby to cam open the plurality of fingers of the elongated body.

Maternal and fetal birthing simulators are disclosed. The maternal simulator has a rotatable gynecoid pelvis, legs articulated at the hip and knee joints, and a deformable covering that simulates the feel of the skin and underlying tissues. The maternal birthing simulator may optionally be used with a pressure-based uterine propulsive system. The fetal simulator has an extensible spine, a movable head, movable clavicles, and arms articulated at the shoulder and elbow joints, and may include sensors to measure spinal extension, head rotation, applied traction force, and brachial plexus displacement.

Artificial disc (ADR) and joint replacement components, particularly those associated with the knee and hip, use compressible, resilient materials to approximate natural kinematics, often in conjunction with elastic or spring components to tether articulating components to avoid dislocation, excessive compression, flexion or other out-of-range movements. The preferred embodiments require only two or a few articulating components. The designs allow for normal flexion, extension, lateral bending, rotation, and translocation, depending upon the application.

A lower limb orthotic device includes a thigh link connected to a hip link through a hip joint, a hip torque generator including a hip actuator and a first mechanical transmission mechanism interposed between the thigh link and the hip link, a shank link connected to the thigh link through a knee joint, a knee torque generator including a knee actuator and a second mechanical transmission mechanism interposed between the thigh link and the shank link, and a controller, such as for a common motor and pump connected to the hip and knee torque generators, for regulating relative positions of the various components in order to power a user through a natural walking motion, with the first and second mechanical transmission mechanisms aiding in evening out torque over the ranges of motion, while also increasing the range of motion where the torque generators can produce a non-zero torque.

Hip protector (10) worn primarily by the elderly, preventing / reducing hip fractures, resulting from a fall. The protector is made of all-soft materials using a matching pair of hip protective holsters (14 / 24) interconnected by a waist encircling belt (16) from which a pair of protective pad pouches (20) are suspended in the holsters over the user's hips and secured in place by leg encircling bands (18 / 26). The protective pouches include foam bodies (54) with underlying, intermediate, spacer elements (42) and a bottom cover (50), all in combination creating an enclosed, moisture-holding, air chamber (80). The protector is worn under clothing (under pants, bed clothes or swimming trunks, etc.), light weight, easily put on & removed, does not interfere in daily living (sleeping, usual body movements, restroom or bathing activities, etc.), and, when the user sweats, the surface of the user's skin under the hip protector is maintained dry using “one-way-moisture flow” material.

A wearable lower-limb assistance exoskeleton comprises a left-side leg (A), a right-side leg (C) and an object carrier (B). A left first connecting rod (A1) is matched with an inserting rod (B1) to fixedly connecting the left-side leg (A) with the object carrier (B), and a right first connecting rod (C1) is matched with the inserting rod (B1) to fixedly connecting the right-side leg (C) with the object carrier (B). Lower limbs on two sides totally have two rotating degrees of freedom, and the lower limb on each side has one degree of freedom, so that hip joints, knee joints and ankle joints can rotate around the frontal axis. A left motor (A20) and a right motor (C20) are controlled by a bionic intelligent control program to realize walking gaits of the wearable lower-limb assistance exoskeleton. By the wearable lower-limb assistance exoskeleton, physical ability consumption of a person can be effectively reduced. The wearable lower-limb assistance exoskeleton is used for lower-limb assistance, can be used for soldier fighting equipment for military use and can also be used in the field of lower-limb rehabilitation.

The invention provides a lower limb mechanism of a biped robot with multiple degrees of freedom. It includes the waist, thigh, calf and foot, the thigh includes the right thigh and the left thigh, the calf includes the right calf and the left calf, and the foot includes the right foot and the left foot; the waist is composed of two parts, the right hip joint and the left hip joint, connected through the waist Board connection composition; the right hip joint and left hip joint, right thigh and left thigh, right calf and left calf, right foot and left foot are symmetrical structures; the hip joint and thigh are connected in parallel through a Hooke hinge and two connecting rods The thigh and the lower leg are connected through the knee joint connecting rod and the knee joint shaft; the lower leg and the foot are connected in parallel through the Hooke hinge and two ankle joint connecting rods. The invention has the characteristics of many degrees of freedom, and can realize the humanoid gait walking of the biped robot to the greatest extent. The structure is simple, the principle is clear, and the economy is feasible. Large load capacity, compact structure, low cost, low design difficulty, strong feasibility, suitable for biped robot mechanism design requirements.

A CAS system for measuring surgical parameters during hip replacement surgery comprises a first tracking reference in fixed relation with the pelvis to form a frame of reference. A registration tool is trackable. A sensor apparatus tracks the first tracking reference and the registration tool. A controller unit receives tracking data for the first trackable reference and the registration tool. The controller unit has a position and orientation calculator for calculating from the tracking data a position and orientation of the pelvic tracking reference to track the frame of reference, and of the registration tool to produce femoral models at a first and a second sequential operative steps. An alignment adjustor aligns the femoral models with the frame of reference. A surgical parameter calculator calculates surgical parameters as a function of the femoral models as aligned by the alignment adjustor.

The invention relates to the field of medical facility automation, in particular to a lower limb rehabilitation training robot. The lower limb rehabilitation training robot comprises a lower limb rehabilitation training mechanism and a walking trolley mechanism. The lower limb rehabilitation training mechanism comprises a waist fixing base, hip joint motors, thigh connecting rods, thigh fixing belts, knee joint motors, crus connecting rods, crus fixing belts, ankle joint motors and sole supporting bases. The waist fixing base and the thigh connecting rods, the thigh connecting rods and the crus connecting rods, and the crus connecting rods and the sole supporting bases are connected respectively through rotating pairs, and rotate relatively by a certain angle under driving of the related motors to form coordinating gait movement. The walking trolley mechanism comprises a trolley frame, wheels, a handle and a hanging belt. The lower limb rehabilitation training mechanism is used for rehabilitation training of the aspects such as muscular strength, mobility of joint and coordination after lower limb contracture of limb hemiplegic patients, the control principle is simple, wearing and operation are easy, the application range is wide, and patients can select different modes for training according to different rehabilitation stages.

A system and method for trialing a modular hip replacement system (10) permits evaluation and replication of the anatomic anteversion rotational angle of the femur. A distal stem component (18) of the hip replacement system (10) includes a proximal portion (34) having a locator feature (35) that is externally accessible when the stem component is mounted within the femur. A proximal trial body assembly (60) is mounted on the proximal portion (34) of the distal stem component (18) to permit rotation of a trial neck component (62). The trial neck component (62) also includes a locator feature(126) that can be externally referenced to determine the anteversion angle.

The invention relates to a parallel, joint-type and walk-help ectoskeleton artificial limb applicable to paralytic, which pertains to a rehabilitation engineering technical field and comprises a hip joint, a knee joint and an ankle joint which are connected in sequence to form the ectoskeleton artificial limb structure of human crura. The hip joint comprises a single-degree-of-freedom drive mechanism and a harmonic reducer with a larger drive ratio which can output high torque; the knee joint adopts a four-bar mechanism, worm wheel, a worm and gear mechanism to realize transmission; flection of the ectoskeleton artificial limb is kept by taking advantage of the self-locking property of the worm wheel and worm and simultaneously, the worm wheel and worm can deliver larger torque; the ankle joint adopts a 3-RPS parallel mechanism with three degrees of freedom, which comprises an upper platform, three active branched guide rods, a lower platform and a thenar support part so as to realize dorsiflexion, plantar flexion, inversion and eversion. The artificial limb of the invention has compact structure, large slew range for every joint and can meet the requirements of actual movements of human body.

Methods and apparatus for orthopedic replacement of the hip through three incisions with a modular prosthetic system assembled in vivo while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation. A prosthetic femoral stem is inserted into the femur. A prosthetic femoral neck is inserted from a point along the side of the patient's body and into the side of the femur and through a lateral bore in the prosthetic femoral stem to join the prosthetic femoral head. The methods and apparatus include structures and techniques for fixing or enhancing interconnection of implant components, such as by increasing the interconnection in an interference fit with one or more tapers, threads, and / or cooling of components prior to assembly.

An implant for improved engagement between modular components is provided. The implant includes a body member for insertion, in use, in a natural femoral neck; and a rod for insertion, in use, in the intramedullary canal of a femur. The body member has a first engagement surface and the rod has a second engagement surface such that the first and second engagement surfaces are configured for complementary engagement with each other. One of the first or second engagement surfaces may be a protrusion while the other of the first or second engagement surfaces may be a recess for receiving the protrusion. The implant may further include a locking member, a stabilizing member and a guide means. A domed head portion is provided for attachment to a medial end of the body member and insertion, in use, in a natural or prosthetic acetabulum.

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 provides a novel biped humanoid robot system based on pneumatic artificial muscles, belongs to the technical field of robots, and in particular relates to a biped robot having powerful athletic ability and flexible humanoid characteristics. The biped humanoid robot system comprises a mechanical body and an electrical control system; the biped humanoid robot system is characterized in that the mechanical body is mainly composed of seven parts, namely a waist, a hip joint, thighs, knee joints, shanks, feet and the like, and has 13 degrees of freedom in total; in the 13 degrees of freedom, 3 degrees of freedom of the waist are realized by virtue of the cooperation of four pneumatic muscles and the waist spine, and the single degree of freedom of each of the hip joint, the knee joints and the ankle joints is realized by use of one pneumatic muscle and one spring which are pulled to each other to produce opposed rotating force. According to the design of the novel biped humanoid robot system, a control platform is provided; the system relates to the fields of control science and intelligent control in addition to robotics, and is capable of meeting the requirements of scientific research and teaching of a plurality of disciplines.

Methods and apparatus for orthopedic replacement of the hip through three incisions with a modular prosthetic system assembled in vivo while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation. A prosthetic femoral stem is inserted into the femur. A prosthetic femoral neck is inserted from a point along the side of the patient's body and into the side of the femur and through a lateral bore in the prosthetic femoral stem to join the prosthetic femoral head. The methods and apparatus include structures and techniques for fixing or enhancing interconnection of implant components, such as by increasing the interconnection in an interference fit with one or more tapers, threads, and / or cooling of components prior to assembly.

The invention belongs to the field of rehabilitation medical devices, particularly relating to a rehabilitation training robot for lower limbs. The robot consists of a support mechanism, an incline system, a lower limb training mechanism and a control system. The lower limb training mechanism comprises a hip joint mechanism and an ankle joint mechanism; and the ankle joint mechanism consists of a screw nut structure for realizing linear reciprocating motion and a crank four-bar mechanism for realizing plantar flexion and dorsal flexure. The hip joint mechanism and the ankle joint mechanism are combined to finish different training tasks by fully using the principle of the four-bar mechanism and drive the lower limbs of patients to generate the training method consisting of different training modes, training tracks and exciting ways. The training modes include active training, passive training, resistance training and the like; the exciting ways for training the lower limbs include hip joint flexion and extension exciting, foot reciprocating exciting, ankle joint toe flexion and dorsal flexure exciting and combination exciting; the robot moves flexibly, is stable and reliable, has simple appearance and is easy to be accepted by the patients.

Tools and methods for implanting hip resurfacing femoral prostheses along a path defined by the axis of a shaped femoral head surface are described. The prostheses are stemless partial ball components having an outer surface shaped to conform to an acetabular socket and may be a two part design having a mating sleeve component with an internal bore adapted to receive the shaped femoral head. The tools and methods are capable of accurately implanting both one and two piece ball components and sleeves without requiring the prosthesis to have a central stem or the preparation of a stem cavity in the femoral head and neck.

A robotic limb structure which is capable of achieving high speeds. In the context of a biped, the structure is used for a pair of hind limbs. The limb structure includes a primary driven link—such as a thigh pivoting about a hip joint in the case of a hind limb. Secondary links are pivotally connected to the primary driving link. Auxiliary links are provided to constrain the motion between the links. Elastic trim elements are also provided to define a “relaxed” state for the limb and to influence the resonance characteristics of the structure. The control system takes advantage of the resonant characteristics of the structure as a whole.

The teachings provided herein are generally directed to a posterior retractor comprising a handle section; and, a retraction section having an anchoring element. In most embodiments, the handle section comprises a proximal region, a mid-region, and a distal region. And, the length of the handle section can be sufficient to position a hand-held portion of the proximal region of the handle section outside of a surgical site during use of the posterior retractor in a hip arthroplasty procedure. The teachings include the use of the posterior retractor in a hip arthroplasty procedure.

The invention discloses a light active and passive combined lower-limb power-assisted exoskeleton robot. A back and a waist are arranged up and down; a waist bundling connecting piece on the waist is connected with a back supporting piece on the back; hip joint rotary shafts on hip joints are hinged to waist hip connecting pieces on the waist; a spring upper pressing plates on the hip joints are connected with a spring adjusting plate; the spring adjusting plate is positioned at the upper end of the back supporting piece and is connected with the back supporting piece; leading pulley seats are fixedly connected with a waist fixing plate on the waist; the upper ends of thighs are hinged to connecting plates on the hip joints through leg hip connecting shafts; steel wire fixed parts on the hip joints are fixedly mounted on outer walls of thighs; the lower ends of the thighs are hinged to the upper ends of knee joint supporting shells through knee joint connecting shafts; a motor encoder, a motor, a speed reducer, a coupler and a lead screw are sequentially arranged in a knee joint from top to bottom; the upper end of shanks are connected with the knee joint supporting shells; and the lower ends of the shanks are hinged to feet through foot joint shafts. The light active and passive combined lower-limb power-assisted exoskeleton robot is used for military loadbearing.

The invention discloses a lower limb multi-training mode rehabilitation robot, which comprises a pedal drive mechanism, a knee and hip joint movement mechanism and a foot ankle joint movement mechanism. In the pedal drive mechanism, one end of a pedal shaft is connected with a pedal and the other end of the pedal shaft is connected with the leg knee and hip joint movement mechanism and the foot ankle joint movement mechanism. In the knee and hip joint movement mechanism, a connecting rod is fixedly connected with the end part of a middle shaft, the input end of an underdrive device is connected with a brake and a drive source and the output end of the underdrive device is connected with the middle shaft. The left and right sleeves of the foot ankle joint movement mechanism are driven by drive mechanisms which drive in opposite directions, an input drive mechanism is connected with a drive source, and the output drive mechanism is connected with the pedal shaft. In the device, the drive of the knee, hip and foot ankle joint movements around the same central line is realized, the real time control of the brake and the two drive sources is adopted to realize the passive, assisting, active and damping rehabilitation training modes of the six joints on the lower limbs of a patient, the structure is compact, the control is accurate, the operation is safe, and batch production can berealized easily.

The invention discloses a rehabilitation training robot for lower limbs, and aims to provide a rehabilitation training robot which is simple in structure, easy to process and compact in structure of each joint driving device. The key point of the technical scheme comprises a driving device for ankle joints, a driving device for knee joints and a driving device for hip joints; and a shank part and a thigh part are telescopic to adapt patients with different heights. The driving device for the knee joints is placed at the rear end behind a thigh rotating joint and is used as a counter weight for balancing the weight of a movement part of the robot; and the driving device for the hip joints is placed on a base and does not participate in the movement of the robot, so that the weight of the movement part of the robot is greatly reduced. The driving of the joints is realized by a motor through a reducer; and a moment (force) sensor is arranged, and an absolute position encoder and an electromagnetic brake are arranged on the knee joints and the hip joints. The rehabilitation training robot is mainly used for performing passive training, active training or assisted training on the patients with lower limb disability.