32 results about "Hip total replacement" patented technology

A method and device are provided in order to achieve desired orientation of an acetabular cup for total hip replacement or hip resurfacing. The method and device utilize preoperative CT, MRI or other scans, 3D computer modeling and a patient specific alignment jig created from CT, MRI or other data and computer 3D modeling. The device allows accurate placement of a drill hole to establish an acetabular axis and placement of an acetabular cup perpendicular to the axis.

A hip positioner for hip surgery (e.g., total hip arthroplasty surgery) is disclosed in which the patient is in a lateral position with the hip upon which surgery is to be performed facing upwardly. The patient lies on a support board having a plurality of holes therein with pins inserted in selected ones of these holes so as to prevent the patient from rolling on to the patient's back. A stanchion is inserted in at least one of the holes on the front of the patient at or above the level of the patient's hips and a support arm extends horizontally from the stanchion toward the upper hip. A pad is carried on the distal portion of the support arm for positive engagement with a desired anatomical feature of the patient (preferably the crest of ilium of the patient's upper hip) thereby to hold the patient in such desired lateral position during surgery.

Methods and apparatus of the present invention provide for orthopaedic total replacement of the hip while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation following the procedure. In an exemplary embodiment, the acetabulum is prepared and fitted with a prosthetic acetabular cup 702 and a prosthetic femoral head 1102 is fitted into the prosthetic acetabular cup 702. An intramedullary rod 1502 is inserted longitudinally into the femur. A prosthetic femoral neck 3102 is then inserted from a point along the side of the patient's body and into the side of the femur and through a pre-existing lateral bore in the intramedullary rod 1502 and through the remainder of the femur to join the prosthetic femoral head 1102. The methods and apparatus include structures and techniques for fixing the prosthetic femoral neck 3102 in relation to the intramedullary rod 1502.

Orthopedic procedures, such as total hip replacement and/or other surgical procedures, involve the retraction and distraction of bone and tissue in order to reduce prosthesis components, such as a femoral head prosthesis, into place during surgery and to perform other surgical techniques, such as reaming of the acetabulum. An instrument handle that allows for enhanced control of surgical instruments and other tools that involve the application of directional force includes a grip, an extension arm and a support brace that is configured to contact a user's forearm during a surgical procedure. A multiple-tool receptor may also be included that allows for the removable and interchangeable use of tools in connection with the instrument handle. The system described herein allows for deep distraction without angulation using larger muscles or even one's body.

Compositions comprising a mixture of at least two types of particles wherein a) the first type of particles comprise dabigatran etexilate in the form of the free base or in the form of pharmaceutically acceptable salts, polymorphs, solvates or hydrates thereof; and b) the second type of particles comprise at least one pharmaceutically acceptable organic acid, use of said compositions in the reduction of the risk of stroke and systemic embolism in patients with non-valvular atrial fibrillation and/or in the prevention of venous thromboembolic events in adult patients who have undergone elective total hip replacement surgery or total knee replacement surgery and processes for the preparation of said compositions.

The present invention relates to a system and method for objective, real-time acoustic measurement and feedback for proper fit and fill of hip implants during total hip replacement surgery, or other bone implant surgical procedures.

The invention provides a method and system for acquiring a pelvis posture in a total hip replacement operation. Before the operation, a pelvis static measuring device is used for measuring a front plane of an initial static pelvis to determine an initial posture of the pelvis; during the operation, the initial posture is adopted as a reference, and a pelvis dynamic measuring device is aligned with the pelvis to measure the pelvis posture during the operation in real time. The pelvis static measuring device and the pelvis dynamic measuring device are provided with identical measuring modules, and data acquisition modules are arranged in the measuring modules and comprise motion sensors. The system can be divided into the data acquisition modules, a data processing module and a data transmission module according to functions and can be divided into the pelvis static measuring device and the pelvis dynamic measuring device according to constituent parts, the devices are provided with sensors, sensor data is transmitted to a computer terminal in real time, the pelvis posture is calculated and displayed on the computer, the pelvis posture can be acquired in real time, and the acquired pelvis posture serves as a reference of the hip replacement operation.

A device for use in surgical procedures involving arthroplasty, the device including a bearing member at least partially receivable within a bone engaging member and a liner positioned at least partially between said bearing member and said bone engaging member.

The invention relates to a surgical instrument in the medical field and mainly relates to anultrasonic acetabular reamers and file thereof suitable for minimally invasive/total hip replacement. The ultrasonic acetabular reamers comprises a control device, a handle and a file, wherein the handle comprises a piezoelectric ultrasonic generator and a transmission mechanism; the piezoelectric ultrasonic generator comprises two groups of piezoelectric elements, and the two groups of piezoelectric elements respectively control the transverse and longitudinal ultrasonic vibration, the piezoelectric ultrasonic generator is connected with the transmission mechanism, the control device is connected with the ultrasonic generator, and the transmission mechanism is connected with the file through the conversion adapter. Compared with the prior art,, the ultrasonic acetabular reamers can quickly and safely grind the rigid tissue with smooth grinding surface and small amount of bleeding, while preventing wear through the acetabulum, and the two kinds of designed cutter heads can be used with the ultrasonic acetabular reamers, the acetabular reamers handle and the file are angled for minimally invasive/total hip replacement. The ultrasonic acetabular reamer reduces the damage of the operation and improves the operability, accuracy and safety of the operation.

The invention provides a femoral stem prosthesis. The femoral stem prosthesis comprises a stem body, a neck part and a conical head which are sequentially connected from the distal end to the proximalend and are in an integrated structure, wherein the stem body comprises a proximal end part and a distal end part; the proximal end part comprises a proximal end body and a functional part which connects the proximal end and the distal end of the proximal end body and is close to one side of the neck part; the proximal end body is connected to the distal end part; the size of the functional partis gradually increased from the distal end of the proximal end body to the proximal end of the proximal end body; and the cross section of the functional part connected to the proximal end body is ina pear shape or a gourd shape. The femoral stem prosthesis can well match with a narrow medullary cavity of a DDH patient, the neck part of the femoral stem prosthesis occupies a small space, the trauma to the femur is small, the femoral stem prosthesis is not easy to sink and rotate, few types of instruments are required during the operation, the operation is simple and convenient, the requirement on the operation skill of a orthopedist is low, and the femoral stem prosthesis is not only suitable for DDH patients, but also suitable for the total hip replacement of common patients.

The invention discloses an orthopedic osteotomy board system and belongs to the technical field of medical instruments. The system comprises an osteotomy board and positioning nails, and the osteotomyboard is provided with an osteotomy groove and nail holes. The invention further provides an operation method of the orthopedic osteotomy board system. According to the orthopedic osteotomy board system, the osteotomy direction and angle and the distance among the osteotomy ends are determined, the osteotomy groove limits a saw web to swing randomly, horizontal or inclined parallel osteotomy canbe precisely completed, wedge-shaped or irregular shape osteotomy can also be completed according to the design, and the system and method can be applied to intra-operative osteotomy treatment of osteotomy orthopedic surgery for congenital dysplasia of the hip joint, manual total hip arthroplasty and other surgery. The orthopedic osteotomy board system is simple in structure and convenient to operate, individuation positioning and installation can be conducted according to demands, orthopedists can conduct precise osteotomy according to support and guide which are provided by the system, convenience is provided for the surgery operation, the surgery efficiency is improved, and the burden of doctors and patients is reduced.

The invention discloses a drill bit for a total hip replacement minimally invasive surgery. A flexible shaft is formed by a spring with certain rigidity and certain flexibility; a handle part and a cutting head are respectively welded on two ends of the flexible shaft; a stainless steel isolation sleeve is arranged in a puncture hole near a surgical incision; the cutting head at the lower end of the flexible shaft is placed in along an inner cavity of the isolation sleeve; a limiting guide sleeve is placed in the surgical incision through an operating handle; the cutting head is driven by theflexible shaft to conduct downward limiting drilling along the limiting guide sleeve; muscle nerves and other important structures of a patient cannot be damaged during high-speed rotation; and the limiting guide sleeve can prevent a drilled hole from entering a pelvic cavity too deep. The cutting head is made of 316L stainless steel, the serious consequence that a drill bit is broken in an acetabular bone and cannot be taken out during bent drilling can be prevented, after drilling is completed, a screw with a proper length is screwed in along an inner cavity of the isolation sleeve through areversible screwdriver, so that an metal part connecting acetabulum can be fixedly, and the drill bit is safe and reliable, and convenient to operate.

The invention provides a system for customizing an individualized artificial total hip joint replacement operation femur preparation template. The system comprises a femur neck osteotomy guide plate, a femur prosthesis anteversion and lateral border guide plate, the interior surface of the femur neck osteotomy guide plate is matched with a femur head, a femur neck, and a femur intermediate zone between a greater trochanter and a lesser trochanter in anatomic shape, the femur neck osteotomy guide plate is provided with an osteotomy positioning groove, the bottom of the femur prosthesis anteversion and lateral border guide plate is matched with a femur neck osteotomy surface in shape, the femur prosthesis anteversion and lateral border guide plate comprises a body, a lesser trochanter positioning wing and a front side wing, the lesser trochanter positioning wing and the front side wing are arranged on the body, and the body is provided with an anteversion and lateral border guide groove. According to the invention, the position of the ideal artificial total hip joint femur prosthesis in a human body can be controlled accurately, and furthermore the operation effect can be improved.

The invention provides a hip joint torque measuring system which comprises a fixing device, a strain device and a measuring device, wherein the fixing device is suitable for being fixed on a limb connected with a hip joint to be measured; the strain device is fixedly connected with the fixing device; when the strain device is applied with a force, rotates the limb via the fixing device and then drives the thigh bone in the limb to rotate around the axis of the thigh bone, the strain device can generate homogeneous strain; and the measuring device is used for measuring the strain capacity of the strain device. The hip joint torque measuring system provided by the invention can measure the moment condition of the hip joint of a patient during an operation to verify the reconstruction necessity of the soft tissue of the hip joint, and can determine how to specifically and effectively reconstruct the soft tissue of the patient according to measurement results to reconstruct the soft tissue balance of the hip joint of the patient after the operation and increase the stability of the hip joint. Therefore, the hip joint torque measuring system can improve the curative effect of a total hip joint replacement operation and remarkably reduce the post-operation dislocation rate.

Disclosed is a posterolateral approach total hip joint replacement surgery teaching model. The posterolateral approach total hip joint replacement surgery teaching model comprises an acetabular model and a femoral model which cooperate with each other, wherein the outer ends of the acetabular model and the femoral model are each provided with a universal joint fixation end, the outer ends of the universal joint fixation ends are provided with magnets, the acetabular model and the femoral model are placed on a workbench, the workbench is provided with an upper fixation frame and a lower fixation frame, and the magnets are attached to the upper fixation frame and the lower fixation frame. The inner side of a skin model and the inner side of a subcutaneous tissue model are each provided with a scoreboard, and the inner side of a muscle tissue model is provided with a scoreboard. In a surgery process, first of all, skin and subcutaneous tissue are cut, the scoreboards are installed at the inner side of skin, the cutting position, angle and length can be detected, the surgery accuracy is evaluated, trainees are trained, and the surgery proficiency is enhanced.

A surgical positioner system for a support table having a side rail having a clamp assembly for attaching to the side rail. The clamp assembly having a spring and a locking assembly with movement in the x- and y-plane; and extension provides sliding movement in the z-plane. The extension being dimensioned to be operably connected to said clamp assembly and a rotational assembly. A rotational assembly has a portion for operably connecting to the extension, a device attachment portion, and a rotational assembly operably connected to the device attachment portion for providing rotational thereof. A boot having a holder portion and a flexible attachment can be attached to the device attachment portion. The surgical positioner provides motion from different force factors causing multiple components to move in a coordinated way using such established pivots and useful in performing various surgical procedures including direct anterior approach total hip replacement surgery.

The invention discloses a total hip replacement surgical robot system which comprises an optical locator, an image system and a mechanical arm and further comprises a target image map obtaining step, a measurement report forming step, a hand-eye calibration step, a three-dimensional hip bone model obtaining step, a grinding file positioning path obtaining step and a step of moving to a positioning grinding file position. And the file grinding operation step is carried out through locking angle linear movement. According to the total hip replacement surgery robot system, automation and precision of file grinding in the hip replacement surgery process can be achieved, doctors are assisted in surgery, and the surgery efficiency of the whole doctors is improved. The invention is mainly used in the technical field of medical machinery.

The invention discloses a virtual learning method for total hip replacement surgery, which comprises the following steps: firstly, initializing a system, establishing communication connection between an input end and a controller, and finishing mapping of a force feedback device and the controller in a real-time virtual scene; in the operation process, the input end interacts with a surgical instrument model in a virtual scene in a three-dimensional graphic input control mode. Meanwhile, an operator can see a training picture in time through image feedback, and key information prompts are provided in the training process. According to the method, vivid and visual perception can be obtained, understanding of abstract principles is improved, the problem that medical and surgical resources in various regions in China are expensive and tense is solved, and surgical risks are reduced.

According to the technical scheme, the total hip replacement lower limb equal-length calibrator is characterized by comprising a main ruler plate, an auxiliary ruler plate and two positioning rods, the two positioning rods are fixed to the main ruler plate and the auxiliary ruler plate respectively, the auxiliary ruler plate is in sliding connection with the main ruler plate, and the auxiliary ruler plate is in sliding connection with the main ruler plate; scale marks are arranged on the main ruler plate and the auxiliary ruler plate, the arrangement direction of the scale marks is the same as the sliding direction of the auxiliary ruler plate on the main ruler plate, and the scale marks can reflect the total length of the main ruler plate and the auxiliary ruler plate; the aim of improving the consistency of the lengths of the two lower limbs is achieved.

The invention discloses an acetabular cup mold testing device, and belongs to the technical field of orthopedic surgery auxiliary instruments. The device comprises a cup body and a rod body, wherein the cup body comprises a hemispherical shell; an insertion hole is formed in the middle of the bottom surface of the hemispherical shell; the cup body further comprises a rack device, a gear device, arotating device and a ball head. A ball head groove is formed in one large arc edge of the hemispherical shell; the ball head is clamped in the ball head groove and exposed out of the surface of the hemispherical shell, the gear device is connected with the rotating device and the rack device, the rotating device is connected with the ball head, the rod body is inserted into the insertion hole topush the rack device, the rack device is used for driving the gear device to rotate, and the gear device drives the ball head to swing in the ball head groove through the rotating device. According tothe device, the effect of the total hip replacement surgery can be improved, and the probability of secondary surgery repair of the total hip replacement surgery is reduced.

The invention relates to a laser osteotomy assisted total hip replacement surgical robot, and relates to the technical field of medical instruments, the laser osteotomy assisted total hip replacement surgical robot comprises a control computer body, a base is mounted at the front end of the top of the control computer body, the top of the base is connected with the robot body, and a connecting line is arranged on the left side of the control computer body; a support is arranged in front of the control computer body, an operating table is fixed to the top of the support, the other end of a connecting line is connected with an auxiliary device, a laser cutting end executor is installed at the front end of the robot body, and the laser cutting end executor is used for cutting at a preset position according to a preset cutting amount. The right side of the laser cutting end effector is connected with an auxiliary water spraying and air blowing device, and the auxiliary water spraying and air blowing device is used for spraying water and blowing air to the acetabulum. By adopting a laser osteotomy mode, potential safety hazards caused by manual grinding are effectively avoided, and the safety degree of an operation is improved.