43 results about "Non fusion" patented technology

Methods and devices that utilize segmental fixation between several adjacent vertebrae, thus allowing each vertebrae to be adjusted independently, are provided. In general, the device includes a spinal anchoring element that is adapted to seat at least one spinal fixation element, and a closure mechanism that is adapted to mate to the spinal anchoring element to lock the at least one spinal fixation element in a fixed position relative to the spinal anchoring element.

A growing rod for mounting between attachment mechanisms that are secured to anatomical structures of a patient having scoliosis. The growing rod includes a base rod having an attachment end, an extendable rod that is translatable relative to the base rod along a longitudinal axis and a housing enclosing at least a portion of the extendable rod therein. A magnet is rotatably mounted within the housing and is enclosed by a top magnet cover and a bottom magnet cover. The magnet includes a first pole and a second pole. A gear reduction mechanism is associated with the magnet and the extendable rod. The gear reduction mechanism reduces an output rotation to the extendable rod relative to an input rotation from the magnet.

A growing rod for mounting between attachment mechanisms that are secured to anatomical structures of a patient having scoliosis. The growing rod includes an outer housing and an inner housing disposed within the outer housing. The inner housing includes a magnet assembly including a magnet having a first pole and a second pole and a gear reduction mechanism coupled to the magnet. A first rod is secured to the inner housing and a second rod is secured to the outer housing. The gear reduction mechanism reduces an output rotation of the magnet to rotate a driver that operates to move the inner housing along a longitudinal axis with respect to the outer housing.

The invention discloses an echo fused target track association method based on track state estimation.The method comprises the steps of conducting polar coordinate sector partitioning, conducting track starting/updating, conducting track prepushing and associated sector calculation, and judging the state of the prepushed track in an associated sector according to a corrected target fusion threshold and setting the state of the track as non-fusion, pre-fusion or fusion.Different track association strategies are adopted for the three track states; track-trace point association is conducted on the non-fusion track with the conventional nearest neighbor method; track association is conducted on the pre-fusion track with the target feature information assisted nearest neighbor method; for the fusion track, within the fusion wave gate range, feature information is used as the main basis for track association after echo defusion, the fusion track and a track cluster are updated in real time, and the fusion track and the track cluster are deleted if the number of tracks in the track cluster is lower than 2.By the adoption of the method, the probability of mis-tracking or track losing after target fusion can be reduced, and tracking stability can be improved.

The invention discloses a dislocation prevention type non-fusion artificial cervical vertebra and intervertebral disc system comprising a vertebra body component and two end plate components, wherein the end plate components are connected to the upper end and the lower end of the vertebra body component respectively through a dome joint structure and L-type dislocation prevention structures on the front side and the rear side. End plate fixing screws are arranged on the two end plate components respectively. After corpectomy, the system can play a role in supporting at once, the motion function of the normal cervical vertebra is replaced through own interbody connecting parts, stress of the cervical vertebra can be dispersed in the motion process, internal stress of adjacent segment intervertebral discs and zygapophyseal joints can be reduced, and degeneration, which is caused by fusion, of the adjacent segments can be effectively prevented. In addition, stable bony fusion can be achieved through bone grafting and a hydroxyapatite coating on the surface of the system. The operation difficulty is small, trauma is small, and the system is convenient to popularize. Due to the fact that the dislocation prevention positions of the system are arranged, long-period stability can be achieved after the operation.

A device for correcting the non-fusion scoliosis is composed of a correcting rod, the fixing nail fixed to the curved spine and locked to the said correcting rod, and multiple nails for pediculus arcus vertebrae, which are linked with said correcting rod in slide mode. Its advantage is 3D correcting effect.

The invention relates to a laser cladding repair method for a lip crack of a piston rod of an aircraft 300M steel landing gear. The method comprises the following steps of 1, determining laser repairprocess parameters by simulating stretching, impact and fatigue performance experiments of the piston rod, and meanwhile determining that the groove type of laser cladding repair is V-shaped; 2, selecting a simulation part before repairing, carrying out a simulation part fatigue experiment, evaluating an experiment result, and determining a final laser cladding repair process; 3, carrying out laser repair on the crack of the piston rod; 4, detecting a repair area of the piston rod to find no crack and non-fusion defect after the repair is completed; and 5, processing the repair area, recovering the size, and meeting the drawing or assembly requirements. According to the laser cladding repair method, the fatigue experiment is carried out on the simulation part of the piston rod to determinethe final repair process, it is guaranteed that the piston rod do not crack in the long period of use, so that the safety use requirements of an aircraft in the service life period can be ensured.

The invention discloses a fillet weld leg dimension and internal defect ultrasonic nondestructive measurement method, which comprises a first welding plate and a second welding plate, wherein the second welding plate is welded in a way of forming a certain included angle with the first welding plate and is provided with a welding region; the welding region comprises fillet weld or non-fusion holes. The method comprises the following steps of scanning and inspecting the second welding plate; obtaining reflection echo of a target cross section; performing visual scanning and inspection according to the reflection echo; obtaining the target cross section plane graph represented by the echo; calculating the fillet weld leg or the non-fusion hole dimension according to the plane graph. By using the measurement method, the measurement is performed under the condition of not damaging the welding structure; the detection cross section and the inside non-fusion defect dimension can be accurately positioned; the detection result accuracy is improved; a beneficial technical method is provided for fillet weld structure intensity improvement, service life calculation and evaluation.

The invention provides a flexible pedicle screw used for bone surgery and neurosurgery. A small section of high-rigidity spring is tied to serve as the neck of the pedicle screw to connect a screw body and a screw base, and the pedicle screw thus can moderately bend in all directions. Spinal segments fixed by the flexible pedicle screw has a better non-fusion fixation effect, stress concentrationof adjacent segments is easily reduced, and degeneration of adjacent segments is prevented.

A spinal interbody or intravertebral device is provided for fusion and non-fusion spinal applications. The spinal interbody device allows for limited motion between adjacent vertebrae to help preserve normal motion between adjacent vertebrae (superior/inferior vertebrae) relative to the implanted spinal interbody device and limited rotational motion of the spinal interbody device, once implanted. Limitation of motion is achieved through one or more protrusions incorporated into the spinal interbody device. The protrusions preferably, but not necessarily, extend radially from a hub or ball-shaped body of the interbody device. In one form, a single protrusion extends radially about the hub of the interbody device to form a continuous band, ring or base about the hub. In this form, portions of the band may extend radially further from the hub than other portions of the band. Preferably, but not necessarily, in this form the band extends radially a greater distance from the hub in the posterior and anterior directions. In another form, a first protrusion extends radially from one side of the hub while a second protrusion extends radially from another side of the hub. Anchoring means may also be provided for attachment to upper and lower vertebrae.

Golf-club head preventing weighing block from melting in the process of welding is disclosed. The club head includes a club body main and a weighing block, the main body is equipped with a container for the weighing block whose melting point is higher than that of the main body, and a channel for melted welding materials forming after cooling solidification between the weighing block and the container.

The invention discloses a novel pedicle screw. Traditional fixed-fusion common single-axis and multi-axis screws in the orthopedic surgery operation are technically transformed on the basis of external springs, so that the screws are applied to the non-fusion operation, and the original simple, practical and low-incisure advantages can be maintained.

A bi-flexible vertebral arch pedicle screw rod fixation system for a screw rod used in orthopaedic and neurosurgical operations is characterized in that a vertebral arch pedicle screw and a connecting rod are a flexible vertebral arch pedicle screw and a flexible connecting rod respectively and both have micro-dynamic functions. A screw body of the flexible vertebral arch pedicle screw and a screw seat are connected by a flexible body composed of a cylindrical spring, rigid rods at both ends of the flexible connecting rod and one section or a plurality of interval-distribution sections in the middle are connected by a flexible body composed of a cylindrical spring; the flexible vertebral arch pedicle screw is connected with the screw body and the screw seat at both ends of one section of the cylindrical spring; the flexible connecting rod is connected and fixed with one section of rigid metal rod at each end of the cylindrical spring, and the outer diameter of the cylindrical springs is not larger than that of the connected rigid metal rods. Because of the elastic range of motion of the screw rod, the fixed spinal segment has better non-fusion fixation effect than a single flexible screw rod, and is more conducive to reducing the stress concentration of the adjacent segments and preventing the degeneration of the adjacent segments.

The invention discloses a panoramic lens assembly and a panoramic generation method. The panoramic lens assembly comprises a first fisheye lens and a second fisheye lens, the first fisheye lens is overlapped with a front lens of the mobile device, the second fisheye lens is overlapped with a rear lens of the mobile device, the view field angles of the front lens and the rear lens of the mobile device are respectively expanded, imaging is carried out on a front image sensor and a rear image sensor of the mobile device, and first fisheye images and second fisheye images are obtained. The panorama generation method comprises the steps of 1, obtaining a first fisheye image and a second fisheye image; 2, obtaining first/second latitude and longitude images; 3, obtaining two groups of overlappedregions; 4, calculating and fusing the displacement values of the overlapped regions; and 5, combining the fusion area and the non-fusion area to generate a panoramic picture. According to the invention, a group of extended large-field-angle lenses is combined to form a group of panoramic lens assemblies, and the mode is low in cost and strong in applicability.

The invention discloses a medical device, in particular to a non-fusion fixation device for cervical vertebrae. The fixing device includes an upper body part, a lower body part and a middle part of an integral structure, wherein the upper body part and the lower body part are arranged symmetrically, the middle part is located between the upper body part and the lower body part and connects the upper body part and the lower part, and the cross section of the middle part is U-shaped; the outer surface of the upper part of the main body and the lower part of the main body are provided with several rows of barb teeth; the tail ends of the upper part of the main body and the lower part of the main body are arc-shaped; the direction of the barb teeth is inclined to the tail ends of the upper part of the main body and the lower part of the main body. The invention has the advantages of small operation trauma, strong postoperative vertebral body activity, good stability, and not easy to shift and protrude.

Since 1990, gene therapy as the 5th new complementary therapy for tumor has become the most prospective method for human to conquer cancer. However, the gene therapy of bladder cancer still has the following inevitable problems that: (1), the core technology of the gene therapy is to select a carrier with high expression, low immunogenicity, no insertion teratogenesis and good biological safety; (2), because the occurrence and the development of the tumor are a process of multi-gene and multi-channel regulation, the anti-tumor effect of the gene therapy for regulating cell differentiation and accelerating an apoptosis process for a single target is limited; and (3), fusion gene therapy may weaken even inactivate the anti-tumor effect of another gene. Therefore, a non-fusion Adeno-associated virus (AVV) carrier of tumstatin Tumstatin and suicide gene HSV-TK for resisting tumor angiogenesis specifically and highly efficiently is constructed by adopting a technical platform of a gene Adeno-associated virus (AVV) carrier with high biological safety and low immunogenicity. Because the AVV has high affinity to bladder cancer cells, the AVV makes infected bladder cancer cells continuously expressed and secrete the tumstatin to inhibit angiogenesis, the non-fusion Adeno-associated virus (AVV) carrier enhances the sensitivity of the tumor to a prodrug and the suicide gene in an ischemia state and treats the bladder cancer by cooperating with double targets to fulfil the aim of treating the tumor and preventing the tumor from relapsing.

Spinal correction surgical techniques and methodologies for correction of scoliosis using non fusion anterior scoliosis correction, including soft tissue releases, unique correction techniques such as de-rotation, and unique single and dual anchor screw/cord applications.