113results about How to "High reset accuracy" patented technology

The invention discloses a detachable long bone reduction robot. The detachable long bone reduction robot comprises a fixing mechanism and a reduction mechanism which are connected with or separated from each other, wherein the fixing mechanism comprises two groups of same fixing units which are connected with or separated from each other via two same connecting plates (1); the reduction mechanism is provided with a small annular platform (11), a large annular platform (12), twelve universal hinges (13) and six driving rods (14); the small annular platform (11) is connected with a bottom plate (2) and the universal hinges (13); the universal hinges (13) are connected with the driving rods (14); the universal hinges (13) are connected with the large annular platform (12); the large annular platform (12) is connected with the bottom plate (2). Due to the adoption of a parallel mechanism of six degrees of freedom, the detachable long bone reduction robot has the advantages of high accuracy, high loading capacity, high rigidity, compact structure and the like; the detachable long bone reduction robot is applied to long bone fracture reduction, is used for replacing doctor operation, and contributes to increasing the reduction accuracy, reducing operation wounds and lowering the probability of operative infection.

The invention discloses a free connecting type three-branched chain parallel orthopedic external fixing support, which consists of two fixing rings and three branched chains, wherein the fixing ring is provided with connecting holes which are arranged along the circumferential direction, and the branched chains are provided with two driving moving pairs, a rotating pair and a ball pair. The two fixing rings can be respectively fixedly connected with the bone blocks at both ends of the fracture through metal spicules; the six degrees of freedom relative movement between the fixing rings can begenerated to realize the reduction of fracture according to a certain rule to adjust the driving moving pair of each branched chain. The three branches of the external fixing support can be freely connected between the fixing rings, and the installation is convenient and quick; the number of the branched chains is smaller than that of the general parallel external fixing support, the whole body islight, and the interference to the perspective image is small; the driving pairs of the branched chains can accurately indicate the amount of driving displacement and can lock, reset, and fix the fracture more precisely. According to the external, the external fixing support can effectively improve the clinical application effect of the orthopedic external fixation technology and has important significance.

The invention relates to an explosion driver for a large explosive wave simulator. The explosion driver for the large explosive wave simulator comprises a driving tube (4), an adapter (5), a buffering counter-recoil machine (1), a roller support (3) and a buffering counter-recoil machine bracket (2), wherein the driving tube (4) is in a cavity structure of which the front end is open and the rear end is closed; the rear part of the driving tube (4) is supported on the roller support (3), the adapter (5) is sheathed at the front part of the driving tube (4), the buffering counter-recoil machine (1) is fixed on the buffering counter-recoil machine bracket (2), and the buffering counter-recoil machine bracket (2) and the roller support (3) are fixed on a reinforced concrete base. The explosion driver has the characteristics of high explosion equivalent, strong buffer ability, high resetting precision, good sealing and damping effects, and repeatability for use, and has important significance for research of explosive shock wave characteristic, engineering structure, weaponry anti-explosion property and the like.

The invention relates to a pelvic fracture reduction intelligent monitoring system comprising a sample fracture model database, a patient pelvic fracture data acquisition unit, a reset situation monitoring unit and a mixed reality data fusion processing unit. The sample fracture model database stores a plurality of sample fracture models. The patient pelvic fracture data acquisition unit utilizesthe magnetic navigation and positioning technology to collect patient pelvic position information data and upload the data to the mixed reality data fusion processing unit. The mixed reality data fusion processing unit automatically calls a sample fracture model in the sample fracture model database corresponding to the patient pelvic fracture condition and utilizes the mixed reality technology tomatch the patient pelvic position information data with the sample fracture model to form an intelligent fracture model for the patient pelvic fracture state. The reset situation monitoring unit loads and displays images of the intelligent fracture model in different positions and monitors the reset situation of the patient pelvis at different positions. The system enhances the treatment effect and reduces the person radiation.

The invention relates to a simulating target positioning device for diagnosis equipment of a laser nuclear fusion target chamber. The simulating target positioning device comprises a simulating target, a target feeding rod, a first linear positioning bearing and a linear motor, wherein the first linear positioning bearing is connected onto the target feeding rod in a sheathing manner; the linear motor drives the target feeding rod to do telescopic movement in the first linear positioning bearing along the axial direction of the linear motor; and the target feeding rod is movably connected with the simulating target. According to the simulating target positioning device, stable and smooth telescopic movement along the axial direction can be realized and high-accuracy position indication can be carried out on a theoretical target position of the diagnosis equipment.

The invention discloses a vertebral slippage lifting device which comprises a positioning mechanism and a lifting mechanism. The positioning mechanism comprises a positioning plate, a positioning pin and a positioning sleeve, the positioning plate is provided with a first through hole matched with the positioning pin, and one end of the positioning sleeve is vertically and detachably fixed to the positioning plate; the lifting mechanism comprises a lifting hook, the lifting hook comprises a hook-shaped portion and a rod portion, the rod portion of the lifting hook is arranged in the positioning sleeve, and a second through hole used for allowing the rod portion of the lifting hook to penetrate through is formed in the portion, connected with the positioning sleeve, of the positioning plate. The vertebral slippage lifting device is convenient to operate and high in reduction precision and causes few operation wounds.

The invention relates to a billiard repositioning method based on an image matching technology in a computer billiard assistant judging system. The method is realized in the computer billiard assistant judging system; the system comprises a camera, a Snooker billiard table, a video capture device and a computer; and the camera is arranged above the center of the billiard table surface. The methodcomprises the following steps of judging whether the billiard balls are displaced and repositioning displaced billiard balls. The invention has the beneficial effects of: 1. having memory function, storing each frame image captured in the billiard game, being capable of replaying any frame picture in the game; 2. having fast speed for repositioning judgment and operation and realizing real-time guide repositioning; 3. having high repositioning precision, carrying out comparison on pixels directly when images are matched, thus being very sensitive to slight change of images, being capable of finding the difference of one pixel in the fine search process, especially fine searching during repositioning, searching a point with smallest error in the current pixel point and 8 neighborhood points thereof all the time.

The invention discloses an intelligent navigation bone fracture therapeutic instrument comprising a base, a Z axis unit, a rotary unit, an X axis unit, a Y axis unit, a proximal end unit and a distal end unit. The distal end unit comprises a fixed rack mounted on the base connectively and a distal end bone needle mounted on the fixed rack connectively. The proximal end unit comprises a U-shaped member and a proximal end bone needle, the U-shaped member is provided with a common end base and two opening rods fixedly connected with the common end base, and the proximal end bone needle is mounted on the two opening rods connectively. The distal end bone needle and the proximal end needle are connected with two sides of bone fracture respectively, the distal end bone needle is used for positioning, and the position of the proximal end bone needle is adjusted through the X axis unit, the Y axis unit, the Z axis unit and the rotary unit, so that precise reduction and fixation can be realized at two sides of the bone fracture. The intelligent navigation bone fracture therapeutic instrument disclosed by the invention can achieves the following technical effects of: improving the precisionof reduction, accomplishing firm fixation, facilitating the operation of a doctor, realizing minimally invasive operation, generating small wound and reducing the injure to a patient.