50results about How to "Implant stability" patented technology

Instruments and methods for inserting an intervertebral implant. Insertion of the implant is accomplished by grasping the implant between the arms of an insertion instrument having arms which separate from each other and close against each other onto the implant, such that the ends of the arms of the insertion instrument engage recesses of the implant. A spacer may be provided between the arms of the insertion instrument to help position the implant while held by the arms.

A delivery system and method for percutaneous aortic valve (PAV) replacement and apparatus used therein. A temporary aortic valve comprised of a reversibly expandable occluding means, such as balloons, surrounds a central catheter mechanism. The temporary valve is positioned within the ascending aorta, just above and downstream from the coronary ostia. The occluding means is configured such that, when fully expanded against the aortic wall, gaps are left that promote continuous coronary perfusion during the cardiac cycle. The temporary valve with occluding means substitutes for the function of the native aortic valve during its replacement. The native aortic valve is next dilated, and then ablated through deployment of low profile, elongated, sequentially delivered stents. The ablation stent(s) displace the native valve tissues and remain within the aortic annulus to receive and provide a structure for retaining the PAV. The PAV is delivered, positioned and deployed within the ablation stent(s) at the aortic annulus with precision and relative ease. Ablation of the native aortic valve removes the structural obstacles to precise PAV placement. The temporary aortic valve mediates the hemodynamic forces upon the devices as encountered by the surgeon following native valve ablation. The temporary valve also promotes patient stability through continuous coronary perfusion and a moderated transvalvular pressure gradient and regurgitation. Sequential delivery of low profile PAV components minimize the risk of trauma and injury to vascular tissues. Mathematical considerations for determining the optimum cross-sectional area for the temporary valve blood perfusion gaps are also described.

An interpositional biarticular disk implant (11) having a circular peripheral rim, a generally toroidal axial center opening (13) and convex upper and lower surfaces (15, 17) is implanted between resected concave surfaces of the metacarpal base and the trapezium or other carpal bone in a CMC joint replacement. The disk (11) is anchored in operative position through the use of a flexable cond, such as a harvested tendon that passes through the center opening (13) and through osseous passageways created in the two facing bones.

A method for percutaneous aortic valve (PAV) replacement and a temporary aortic valve used to facilitate the same. The temporary valve is comprised of a reversibly expandable occluding means, such as balloons, surrounding a central catheter mechanism. The temporary valve is positioned within the ascending aorta, just above and downstream from the coronary ostia. The occluding means is configured such that, when fully expanded against the aortic wall, gaps are left that promote continuous coronary perfusion during the cardiac cycle. The native aortic valve is next dilated, and then ablated through deployment of an ablation stent. The ablation stent displaces the native valve tissues and remains within the aortic annulus to receive and retain the PAV. The PAV can then be positioned and deployed within the ablation stent with precision and ease. Ablation of the native aortic valve removes the structural obstacles to precise PAV placement. The temporary aortic valve mediates the hemodynamic forces encountered by the surgeon following native valve ablation. The temporary valve also promotes patient stability through continuous coronary perfusion and a moderated transvavlular pressure gradient. Mathematical considerations for determining the optimum cross-sectional area for the temporary valve blood perfusion gaps are also described.

An interbody spinal implant, such as a solid-body or composite implant. The implant has at least one integration surface with a roughened surface topography including a repeating pattern, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebral endplates and to inhibit migration of the implant. The repeating pattern is formed of at least three at least partially overlapping repeating patterns. The repeating patterns may radiate at a fixed distance from at least one point and may include recesses having a slope of thirty degrees or less relative to the integration surface. Also disclosed are processes of fabricating the integration surfaces.

A catheter adapted for placement in the ascending aorta comprises a central catheter mechanism and a balloon structure or other occluding structure at its distal end. The catheter may be placed over the aortic arch such that the balloon structure is placed in the ascending aorta just above the Sinus of Valsalva and coronary ostia. Once in place, the balloon structure is inflated to control blood flow through the aorta during aortic valve ablation and replacement protocols.

An implantable medical device is provided which has a housing of an elongate form to minimize a size of an incision required for implantation. A stabilizing element is associated with the elongated form housing for the medical device. The stabilizing element transitions from a low profile initial form to a higher width final form to provide the medical device with a stabilized footprint after implantation. The stabilizing element is in the form of a rotating wing in one embodiment. In another embodiment, the stabilizing element is in the form of an expanding loop that can bend to extend out of side openings of a cavity within the housing, to provide such stabilization at the implantation site. The medical device can be in the form of a pacemaker, infusion pump, vascular access port or other subcutaneously implanted medical device.

Disclosed is a drug delivery implant implanted into a bone. The drug delivery implant includes an implant fixture provided with an inlet formed at the upper end thereof and a drug supply cartridge coupled to the fixture, the drug supply cartridge includes a cap to close the inlet of the fixture and a cartridge main body provided under the cap, coupled with the cap and accommodated in the fixture to release a drug, and a cartridge hole to accommodate the cartridge main body and drug channels to guide the drug released from the inside of the cartridge main body to the outside of the fixture are formed in the fixture. The drug delivery implant may continuously administer the drug into bone tissues and mount the drug cartridge together with the cap in the fixture, thus facilitating mount of the drug cartridge in the fixture and replacement of the drug cartridge.

An endoluminal stent graft includes segments of a healing promoter to promote the “healing in” of the distal and / or proximal neck(s) of the endoluminal stent graft in a vessel, thus reducing the risk of migration and the occurrence of endoleaks that can formed at the side of the neck(s) and the consequent feeding of the aneurysm sac. In some applications, the segments of the healing promoter are located within a proximal anchor region located near the proximal neck opening of the endoluminal stent graft and, optionally, within one or more distal anchor regions located near one or more distal neck openings of the endoluminal stent graft. In other applications, the segments of the healing promoter are located within the proximal anchor region, but not the distal anchor region.

A p-type region of a light receiving section is formed by implanting boron ions from the direction normal to a semiconductor substrate. The ion implantation conditions of boron are a few hundred to 4 MeV for the ion implantation energy, 1×1010 to 1×1012 ions / cm2 for the implanted dose, and 0 degree±0.2 degrees for an ion implantation angle (θ) with respect to the direction normal to the surface of the semiconductor substrate.

The invention relates to a 3D printing device of an oral cavity apparatus and a printing method thereof. The 3D printing device comprises a forming worktable, a power paving device, a first laser module, a second laser module and a laser control module, wherein the laser control module controls the first laser module to output continuous laser to scan and form to form a printing layer of the oralcavity apparatus and output pulse laser for precise processing; the second laser module carries out subtractive processing of a microstructure on the printing layer of the oral cavity apparatus. According to the 3D printing device of the oral cavity apparatus and the printing method thereof provided by the invention, by sending out continuous laser and pulse laser separately by adopting an opticalfiber laser: a first laser with high stability, carrying out scan forming to form the printing layer of the oral cavity apparatus through the first laser for precise processing and carrying out subtractive processing of the microstructure on the printing layer by means of the second laser, follow-up grinding treatment on the oral cavity apparatus of 3D printing is not needed. The oral cavity apparatus is printed and molded at one time, and the 3D printing device has a high precision and simplifies the production step.

The invention discloses a combined type renal artery stent. The combined type renal artery stent can select a certain number of segmented stents to form a proper length of renal artery stent accordingto the lesion position and range so as to meet the individualized needs of patients. Meanwhile, because the various segmented stents are connected in a protrusion and groove clamping mode, the peripheries of the various segmented stents have impenetrable X ray markers to achieve rapid assembly and accurate positioning. The drug coating on the surface can reduce the incidence of various complications by slow release and reduce the risk of human body lumen restenosis. In addition, the combined type renal artery stent can be bent naturally according to the structural characteristics of the humanrenal artery so as to be more consistent with human tissue adaptability and make implantation safer and more stable.

A catheter adapted for placement in the ascending aorta comprises a central catheter mechanism and a balloon structure or other occluding structure at its distal end. The catheter may be placed over the aortic arch such that the occluding structure is placed in the ascending aorta just above the Sinus of Valsalva and coronary ostia. Once in place, the occluding structure is inflated to control blood flow through the aorta during aortic valve ablation and replacement protocols.

The invention provides an artificial alpha femoral stem prosthesis, which comprises a femoral stem cone, a femoral neck and a stem body in integral connection. The upper end face of the femoral neck is provided with a tool operating hole, the stem body comprises a femoral stem near section, a femoral stem middle section and a femoral stem far section, and a deflection angle is formed between the femoral neck and the stem body. By adoption of the integral structure, problems of abrasion, bone erosion and the like among components are eliminated; the femoral neck is wide in a motion range, stability in prosthesis implantation and effectiveness in rotation resistance are realized, great conditions are created for growth and proliferation of bone cells and soft tissues, the fixing effect of the prosthesis in a human body is improved, the service life of the prosthesis is prolonged, the surgical success rate is increased, and post-surgical pains of patients are alleviated. In addition, thesurface of the prosthesis is coated with a titanium microporous coating, biocompatibility of the prosthesis is improved, strength, plasticity and toughness of the prosthesis are matched with those ofhuman bones, and accordingly perfect matching of the prosthesis with femora of patients is realized.

The invention discloses a finger joint prosthesis. The finger joint prosthesis comprises a finger joint (1) and a palm finger joint (2). The finger joint (1) comprises an enarthrosis head (11) and a finger joint handle (12) which are connected, and the two sides of the end, close to the enarthrosis head (11), of the finger joint handle (12) are provided with protruding first longitudinal ribs (13). The palm finger joint (2) comprises an enarthrosis head (21) and a palm finger joint handle (22) which are connected, and the two sides of the end, close to the enarthrosis head (21), of the palm finger joint handle (22) are provided with protruding second longitudinal ribs (23). The second longitudinal ribs (23) and the first longitudinal ribs (13) can be embedded into the body of a patient so that the palm finger joint (2) and the finger joint (1) can be prevented from rotating in the body of the patient. The surface roughness of the finger joint prosthesis is enhanced, bone ingrowth is facilitated so that the service life of the prosthesis can be prolonged, prosthesis implantation is stable, an operation is convenient, the handle shape is favorable for finger joint blood supply, and the longitudinal ribs are arranged so that rotation resistance can be facilitated and implantation can be convenient.

An artificial socket bone used as an outer cover wholly or partially encapsulating an artificial dental root, wherein the artificial socket bone is formed in a substantially cylindrical tubular shape, with protrusions being formed through a plurality of cuts in the surface of the artificial socket bone, part or all of the protrusions being curved inwards and / or outwards of the artificial socket bone. Some of the cuts are through-holes, which have no protrusions, for letting through cells that differentiate into alveolar bone proper and bone trabeculae.

The invention discloses a combined type femoral stem. The combined type femoral stem is used for fixing hip joint prostheses and comprises proximal femurs (1) and distal femurs (2). The bottom surfaces of the proximal femurs (1) are sunken to form limiting holes (11) in the shapes of inverted cones, the tops of the distal femurs (2) upwardly extend to form conical limiting columns (21), the conical limiting columns (21) are inserted into the limiting holes (11) in the shapes of the inverted cones, and the proximal femurs (1) with different specifications are connected with the distal femurs (2) with different specifications, so that the combined type femoral stem is adaptive to patients with different anatomic morphologies of pulp chambers. The combined type femoral stem has the advantages that the proximal femurs and the distal femurs are of adjustable structures, and accordingly the combined type femoral stem is wide in applicable patient range and is practical; the prostheses can be stably implanted into the patients, and surgery can be facilitated; stem-shaped structures are favorable for blood supply for the femoral hip chambers of the patients; the combined type femoral stem is excellent in rotation resistance and bone ingrowth, and accordingly the service lives of the prostheses can be prolonged.

The invention provides a bone filling prosthesis. The bone filling prosthesis comprises a first prosthetic block, a second prosthetic block, length adjusting components and a first elastic member. Thefirst elastic member is arranged between the first prosthetic block and the second prosthetic blocks, so as to connect the first prosthetic block with the second prosthetic block through the first elastic member. At least part of each length adjusting component is retractably arranged between the first prosthetic block and the second prosthetic block, the length of the bone filling prosthesis isregulated through adjustment of the distance between the first prosthetic block and the second prosthetic block, and accordingly, the bone filling prosthesis can be matched with bone defects with different cavity gap lengths. By the bone filling prosthesis, the problem of incapability of adjusting the length of bone filling prostheses in the prior art is solved.

The invention relates to a 3D printing device and method for a biological implant. The 3D printing device comprises a forming workbench, a powder laying device, a first laser module, a second laser module and a laser control module, wherein the laser control module controls the first laser module to output continuous laser for performing scanning molding so as to form the printing layer of the biological implant and output pulse laser to perform precise processing, and second laser module performs microstructure material reduction on the printing layer of the biological implant. The 3D printing device and method has the advantages that the high-stability optical fiber first laser device is used to emit the continuous laser and the pulse laser, the printing layer of the biological implant is formed by using the first laser device to perform scanning molding, contour precise processing is performed through the first laser device, then the optical fiber second laser device is used to perform microstructure material reduction on the printing layer, subsequent polishing of the biological implant obtained after the 3D printing is not needed, printing forming in one step is achieved, andthe 3D printing device and method is high in precision and capable of simplifying production procedures.

The invention relates to a preparation method of an anatomical type three-dimensional printing corrugated pipe elastic body tracheal stent and a product thereof. Biological elastic body poly 1, 8- octylene glycol-citric acid (POC) and polycaprolactone (PCL) are main structural materials of a mechanical support, nano-sized hydroxyapatite particles (Hap) are used as a filler and are mixed with POC-PCL to form POC-PCL / Hap master batch, and then a degradable tracheal stent material is prepared by a three-dimensional printing method through melt deposition forming. The stent consists of a tubular body, four symmetrical circular holes are formed in the edge of the body and are used for fixing an air pipe, the surface of the stent is smooth and corrugated, the diameter of the stent is 2cm, the length of the stent is 6cm, and an array of holes are distributed on the corrugated curved surface of the stent. The tracheal stent has the advantages of accurate implantation, convenient operation, acceleration of postoperative healing, good stability, firmness and difficulty in releasing.

The invention discloses a rice seedling transplanting tube. The rice seedling transplanting tube having an opened mud discharging paw is adopted, a seedling insert channel is arranged nearby the mud discharging paw, the mud discharging paw is used to dig a hole in the field in advance, and a seedling is inserted into soil in a pneumatic manner, so the tube has the advantages of very simple operation, no foiling to hands, no need of repeated waist bending for seedling transplantation, and good social benefit.

The invention discloses a mechanical hand which is used for implanting a nut. The mechanical hand comprises a rack, a grabbing mechanism, a slide mechanism, a power mechanism and a return mechanism. In production operation, the nut is grabbed by the grabbing mechanism, and the nut is kept to not drop under clamping action of a first clamping plate and a second clamping plate. The power mechanism drives a slide plate to slide in a slide slot, drives an ejector pin to get out of a limiting hole, and ejects out the grabbed nut to implant into a target element. After implanting is completed, the power mechanism stops applying force to the slide plate, and the slide mechanism is returned under action of an elastic part of the return mechanism. The grabbing mechanism continuously grabs a next nut to enter next implanting operation, so that continuous and automatic production is realized, and implanting efficiency is improved. The ejector pin slides and is stable in a return process, so that the nut is prevented from the defects such as floating or sinking, and therefore, the implanting effect is relatively good.

The invention provides a reusable needle assisting device and a using method thereof. The needle assisting device is internally provided with a reset mechanism capable of enabling the needle assisting device to restore to an initial locking state, and the reset mechanism comprises a needle withdrawing bin, a needle withdrawing bin knob, a trigger assembly reset button and the like. By pressing the reset mechanism, a buckle in the needle assisting device returns to an initial position, a needle withdrawing spring is compressed again, and therefore, the reset mechanism can be used for next sensor implantation. By arranging the reset mechanism, the needle withdrawing process of the needle assisting device is more stable and smoother, implantation and needle withdrawing operation can be repeatedly carried out for more times, the process of recovering the initial locking state of the needle assisting device is more stable and accurate, and dislocation and clamping phenomena cannot be generated in the process from the unlocking state to the initial locking state for more times, so that the needle assisting device and an emitter in the needle assisting device can be repeatedly used, and the needle assisting device is simple in structure and convenient to use.

The invention relates to a stent fixture for implant for precision-guided insertion by which it is possible to stably, precisely, and rapidly perform puncturing for implant placement. In this technique, the implant is inserted into the gums and the bone through a stent. The stent fixture includes a fixing screw composed of a thread portion, a guide portion extending from the thread portion, a head portion provided at an upper end of the guide portion with diameter bigger than an outer diameter of the guide portion, and a fixing base composed of a support portion having predetermined supporting force with respect to the gums at the position where the fixing screw is attached to the bone and a guide coupling portion having a guide coupling hole having a shape corresponding to that of the guide portion.

The invention discloses a video advertisement implanting method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a corresponding video frame according to a to-be-played video stream; selecting a target area for implanting an advertisement from the video frame; correspondingly implanting an advertisement frame corresponding to a to-be-implanted advertisement into the target area of the video frame according to a playing sequence to obtain the video frame after the advertisement is implanted; and obtaining a video stream containing the advertisement according to the video frame in which the advertisement is implanted. According to the scheme, the exposure rate and the acceptance degree of the advertisement can be improved.

The invention discloses a 3D printing tibia intramedullary nail total ankle joint prosthesis. The 3D printing tibia intramedullary nail total ankle joint prosthesis is characterized by comprising a tibia fixing rod and a tibia far-end total ankle joint prosthesis; the tibia fixing rod comprises a tibia fixing rod body; the lower part of the tibia fixing rod body is provided with a tibia far-end connecting body; the outer surface of the tail end of the tibia far-end connecting body is conical, and an inner threaded hole is formed in the tail end of the tibia far-end connecting body in the axial direction; the tibia far-end total ankle joint prosthesis comprises a tibia far-end prosthesis, a polyethylene liner and a calcaneus and talus prosthesis; and a taper connecting hole is formed in the upper end of the tibia far-end prosthesis, the tail end of the tibia far-end prosthesis is inserted into the taper connecting hole in a conical mode, the taper connecting hole is provided with a screw hole connected with an arch-shaped opening, and the tibia far-end prosthesis and the tibia fixing rod are connected by screwing a screw into the screw hole and the inner threaded hole. The 3D printing tibia intramedullary nail total ankle joint prosthesis has the advantages that the prosthesis is suitable for prosthesis replacement of a patient with the distal tibia resection, the wing plates and the grooves are arranged in the axial direction, so that implantation of the prosthesis is more stable, and medium-and-long-term stability is good.

The present invention provides a nut for a dental implant and methods related thereto, said nut adapted to be positioned under the sinus membrane of a maxillary sinus of a patient and comprising a hollow body having a first end, a second end and a through passage extending from the first end to the second end, wherein the second end abuts against the maxilla when the nut is positioned under the sinus membrane in a maxillary sinus of a patient and the through passage is adapted for receiving a dental implant at said second end, and wherein said second end further comprises at least two pins, adapted to extend into the maxilla when said nut is implanted under the sinus membrane in a maxillary sinus of a patient.