50 results about "Acetabulum" patented technology

In one embodiment, the present disclosure relates to an acetabular cup for implantation into a prepared acetabulum. The acetabular cup includes an inner surface, an outer surface, and an end face that separates the inner surface and the outer surface. The end face is opposite a polar region of the acetabular cup and circumscribes an open end of the acetabular cup. A plurality of protrusions project outwardly from the outer surface at predefined locations. The acetabular cup is operatively engaged to the prepared acetabulum in a planned orientation when the plurality of protrusions are received in corresponding predefined recesses in the prepared acetabulum.

The invention provides a measuring device for acetabulum filing and grinding. The measuring device for acetabulum filing and grinding comprises a magnetic field generator, a sensor device and a control device, wherein the magnetic field generator is used for generating a changing magnetic field in a space in which an acetabulum filing and grinding device is located; the sensor device is located inthe acetabulum filing and grinding device, the acetabulum filing and grinding device is located in the acetabulum, the acetabulum filing and grinding device and the sensor device are located in the magnetic field, and the sensor device is used for inducing the magnetic field to generate an induced electrical signal; and the control device communicates with the acetabulum filing and grinding device and determines filing and grinding parameters based on the induced electrical signal, and the filing and grinding parameters comprise at least one of a filing and grinding angle and a filing and grinding depth. The magnetic field generator applies the changing magnetic field in the space in which the acetabulum filing and grinding device is located, so that the sensor device installed in the acetabulum filing and grinding device can induce the changing magnetic field and then generate the induced electrical signal, the induced electrical signal can be an induced voltage signal or an inducedcurrent signal, and the control device determines the filing and grinding parameters according to the relevant characteristics of the generated induced electrical signal.

The invention relates to a rotary cutter for acetabulum. The rotary cutter for the acetabulum comprises a hemispherical shell and a support connected to the lower end port of the hemispherical shell; the connecting line from the vertex of the sphere of the hemispherical shell to the spherical center of the hemispherical shell is a rotary axis when the hemispherical shell rotates, and at least three pairs of grooves are evenly formed in the position, around the vertex of the sphere, on the sphere; spiral lines between the vertex of the sphere and the edge of the sphere extend downwards to the edge of the sphere, a pair of grooves extend upwards to the vertex of the sphere along the corresponding spiral lines, and spiral included angles are formed between the grooves and the rotary axis; the rear side surfaces of the grooves intersect with the sphere to form cutting blades, the rotary cutter for the acetabulum is provided with a rear cutter face and a subsidiary rear cutter face, multiple notches which intersect with the cutting blades and extend to the subsidiary rear cutter face are evenly arranged on the rear cutter face, a penetration groove extending downwards along the corresponding spiral line of the groove is formed in each groove, and the height of the rear cutter face is larger than that of a cutter heel. The rotary cutter for the acetabulum has the advantages that the service life is long, the structure is simple and the production cost is low.

A minimally invasive hip arthroplasty technique involves intramedullary insertion of an elongate femoral broach into a femur. The broach has a superior lateromedial transverse bore. A reaming rod is then located through the transverse bore and the neck of the femur. A cutting head is coupled to a distal end of the reaming rod via an incision. An orthogonal drive arm of an arthroplasty jig may also be inserted behind the cutting head to press the cutting head to ream the acetabulum while the reaming rod rotates the cutting head.

An acetabular reamer handle including a shaft having a distal end, a neck part having a longitudinal axis, a driveline extending through the shaft and the neck part, and a locking mechanism. A distally located head part of the driveline is mounted for rotation about the longitudinal axis of the neck part and is connectable to a reamer. The distal end of the shaft and a proximal end of the neck part are pivotally attached to allow the shaft to be tilted relative to the longitudinal axis. The tilting can allow part of the acetabulum and/or reamer that is otherwise obscured to be viewed. The locking mechanism includes an engagement member having an engagement surface located at the distal end of the shaft. The engagement member is moveable distally to urge the engagement surface against the proximal end of the neck part.

The invention discloses a novel customized acetabulum guide plate, and belongs to the field of medical instruments. According to the technical scheme, the novel customized acetabulum guide plate is characterized by comprising a closed structure used for limiting the working position of an acetabulum file, a positioning assembly used for positioning the pubis, the ischium and the iliac bone is fixedly arranged on the closed structure, at least two mounting holes used for mounting a kirschner wire are formed in the positioning assembly, and the positioning assembly is inclined towards one direction. The effect of controlling the angle and depth of the acetabulum file is achieved.

The invention relates to a 3D printed double-acting total acetabulum, which comprises an outer cup and a connecting plate, the outer cup is of a hollow hemispherical structure with an opening, the 3D printed double-acting total acetabulum further comprises an angle adjusting piece arranged between the outer cup and the connecting plate, and a bolt sequentially connected to the outer cup, the angle adjusting piece and the connecting plate; annular teeth are arranged on the outer surface of the outer cup and the connecting plate; the angle adjusting piece is of a cylindrical structure, the two ends of the angle adjusting piece are inclined, the inclined angles of the two ends are opposite, annular teeth are arranged on the two end faces of the angle adjusting piece, and the annular teeth on the angle adjusting piece are matched with the annular teeth located on the outer cup and the annular teeth located on the connecting plate. The product has the advantages that the angle between the outer cup and the connecting plate can be adaptively adjusted conveniently, and therefore the product can better adapt to the ilium in the body of a patient.

The invention discloses a folding pelvic plate for acetabulum quadrilateral fracture. The folding pelvic plate comprises a main plate and an auxiliary plate, and is characterized in that adjacent sides of the main plate and the auxiliary plate are rotationally connected together, a rotation stopping mechanism is connected to a joint of the main plate and the auxiliary plate, and relative positionsof the main plate and the auxiliary plate can be fixed by locking the rotation stopping mechanism. By the adoption of the structure, after the main plate and the auxiliary plate are adjusted to preset positions in a targeted mode according to a specific fracture condition of a patient, the relative positions of the main plate and the auxiliary plate can be fixed by locking the rotation stopping mechanism, and a good effect is achieved on treatment of acetabulum quadrilateral fracture; and in addition, the positions of the main plate and the auxiliary plate are simple and reliable to adjust.

The invention relates to a double-plane vertical fixed-point staggered-acetabulum anterior column screw minimally invasive positioning and guiding device. The device comprises a supporting rod with anL-shaped structure, a sliding block and a fixed base, wherein a chute is formed in the supporting rod; the head end of the supporting rod is movably connected with the sliding block; two or more positioning components are arranged on the sliding block; each positioning component comprises a detachable hollow positioning rod and a threaded guide pin; the threaded guide pins are installed in the hollow positioning rods; the tail end of the supporting rod is connected with the fixed base; a sleeve and a double-plane positioning frame are movably arranged on the fixed base; the double-plane positioning frame is located above the sleeve and comprises a support; the support is provided with a transverse panel and a longitudinal panel which are perpendicular to each other; the transverse panel is provided with a directional hole corresponding to the threaded guide pin; and the sleeve is internally provided with a guide hole serving as an active channel of an open device. The device of the invention has a simple structure, is convenient to use, is safe and reliable, is accurate in positioning, fully guarantees the safety and accuracy of screw fixation, and is capable of succeeding in screw fixation at a time.

The invention provides a navigation power system for acetabular grinding and filing and a using method thereof. The navigation power system for acetabular grinding and filing comprises a navigation device and a power support, wherein the navigation device is used for generating a navigation signal; and the power support is connected with an acetabular grinding file through a connecting structure, and the power support is suitable for adjusting the position and/or angle of the acetabular grinding file relative to an acetabular cup through a navigation signal. According to the navigation power system for acetabulum grinding and filing, an image of an injured part of a patient can be obtained before or during an operation and uploaded to a main console to be recognized, and an operation worker can plan an operation path in advance through control equipment such as the main console; the position of the damaged acetabulum grinding file can further be monitored in real time, so that an operator can dynamically adjust the acetabulum grinding file in real time, and accurate angle adjustment of a front inclination angle and an abduction angle of the acetabulum cup and accurate positioning of a rotation center in the operation process are guaranteed; and the physiological shaking of the operator in the operation process is also avoided, the operation repeatability is high, and the operation stability is high.

Devices and methods for identifying and maintaining the concentric spherical centers of a femur and acetabulum during revision or joint replacement surgery so that post surgery the anatomical spherical centers are maintained. Also disclosed are novel techniques and devices to project images onto an anatomical feature, such as exposed bone, to virtually fit trial prosthetic components, establish bone cut markings, and establishing the anatomical spherical center of a joint.

The invention relates to an acetabulum outer cup mounting positioner. The acetabulum outer cup mounting positioner has the advantage of being capable of assisting in positioning the implantation angleof an acetabulum outer cup. The invention discloses an acetabulum outer cup mounting positioner that includes an operating rod assembly and further comprises an angle indicating assembly located on the operating rod assembly; the operating rod assembly comprises a center rod, the angle indicating assembly comprises an inclined rod, a 45-degree included angle is formed between the inclined rod andthe center rod, and a gradienter indicating that the horizontal plane is perpendicular to the axis of the inclined rod is installed at the upper end of the inclined rod. An acetabulum outer cup of ahuman body has an inclination degree and a forward inclination degree in the acetabulum, the inclination degree and the waist width direction form an included angle of about 15 degrees, and the forward inclination degree is about 45 degrees. The inclined rod is arranged to form the 45-degree included angle with the central rod, so that when a person lies flat and the gradienter indicates the horizontal plane, the inclined rod is vertically upward, and the central rod is just at the 45-degree inclination angle at the moment. A doctor does not need to judge whether the forward inclined degree ofthe implanted acetabulum outer cup exceeds the safety angle range or not according to experience.

The invention discloses a system for acetabulum reaming. The system comprises a reamer, a coupler, a driving rotating assembly, a driving moving assembly, a positioning label, a pressure sensor, an optical positioning system, a lower computer controller, an upper computer controller, a loading shell and a wireless module. According to the invention, by arranging the reamer, the coupler, the driving rotating assembly, the driving moving assembly, the positioning label, the pressure sensor, the optical positioning system, the lower computer controller, the upper computer controller, the loading shell and the wireless module, the system achieves automation and intelligence in acetabulum reaming. The system is mainly applied to the technical field of robots.

The invention relates to a system for judging the shape of an acetabulum, which at least comprises a processing unit (1) capable of generating a three-dimensional image according to spiral CT (Computed Tomography) scanning or MRI (Magnetic Resonance Imaging) data, and the processing unit (1) is capable of generating a three-dimensional image of a hip joint according to pre-acquired spiral CT scanning or MRI data of the hip joint and transmitting a processing result to an analysis unit (2); the analysis unit (2) intercepts three-dimensional images of the acetabulum and the femoral head from the received three-dimensional images of the hip joint respectively, and isoline images of the acetabulum and the femoral head are generated by performing same-value cutting on the three-dimensional images of the acetabulum and the femoral head respectively; the comparison unit (3) judges the spatial form of the hip joint by comparing whether the trends and forms of the isolines of the corresponding surface areas of the acetabulum and the femoral head are matched or not. The invention further relates to a method for judging the shape of the acetabulum.

The invention relates to a parallel acetabulum distraction device which comprises distraction forceps, a parallel sliding device rotationally connected to the distraction forceps and two screwing-in rods detachably connected to the end, away from the distraction forceps, of the parallel sliding device. The parallel sliding device comprises a distraction arm, a first sliding plate connected to the distraction arm and a second sliding plate connected to the distraction arm, the first sliding plate and the second sliding plate are rotationally connected, and the connecting point of the first sliding plate and the second sliding plate is located at the middle point of the length of the first sliding plate and the length of the second sliding plate; the number of the distraction arms is two, one end of each distraction arm is rotationally connected to the distraction clamp, and one end of the first sliding plate and one end of the second sliding plate are rotationally connected to the two ends of the distraction clamp respectively. The end, away from the distraction clamp, of the first sliding plate is connected to one distraction arm in a sliding mode, and the end, away from the distraction clamp, of the second sliding plate is connected to the other distraction arm in a sliding mode. The acetabulum parallel distraction device has the effect of accurately distraction acetabulum in parallel.

The invention discloses a fixing device for fractures of acetabulum anterior and posterior columns. The fixing device for the fractures of the acetabulum anterior and posterior columns comprises an installation part and a movable part detachably installed on the installation part, and further comprises a movable connecting structure and an adjusting assembly, wherein the movable connecting structure is arranged on the movable part; the movable connecting structure is used for making the movable part detachably installed on the installation part; the adjusting assembly is arranged between the installation part and the movable part; and the adjusting assembly is used for adjusting the included angle between the movable part and the installation part; The movable part and the installation part are movably connected and are detachable through the movable connecting structure, and thus, the whole device can be conveniently fixed onto the acetabulum anterior and posterior columns; the included angle of the movable part relative to the installation part can be adjusted through the adjusting assembly; the installation part is fixed onto a position where the acetabulum anterior and posterior columns are convenient to install, and then the movable part is adjusted to fix a fracture part, and the movable part and the installation part are fixed by means of an elastic fixing structure.,.

The invention relates to a novel acetabulum rotation handle, comprising an acetabulum die head. One end of the acetabulum die head is provided with a connecting column. The connecting column is coupled with a sleeve through a bolt. The sleeve is provided with a transmission rod. The transmission rod is provided with a handle. The handle is provided with an arc groove. Beneficial effect of the acetabulum rotation handle is that the disadvantage that an original straight rod body interferes to doctor sight in use of an operation is solved. Sight of a doctor in an operation process would not be influenced, and the acetabulum rotation handle is beneficial for smooth progress of the operation, and use is convenient.