127results about How to "Implanted accurately" patented technology

Devices and methods for assessing the size, shape, and topography of vessel lumens and hollow portions of organs are described. The devices and methods are particularly adapted for determining the size, shape, topography, and compliance of the native heart valves to facilitate the later implantation of a prosthetic heart valve. The devices are typically catheter-based having an assessment mechanism fixed to a distal end of the catheter. The assessment mechanism generally includes an expandable member, such as a balloon. The assessment mechanism may also include an imaging member, a physical assessment member, an electronic mapping construction, an alignment mechanism, a valvuloplasty balloon, or any combinations thereof. The methods typically comprise deploying the balloon percutaneously to a target location, expanding the balloon, and determining one or more physical parameters associated with the target location.

Heart valve delivery systems and methods of delivering and implanting heart valves using delivery catheters are disclosed. The delivery systems can include a handle assembly which can include a first control mechanism, a second control mechanism, and a decoupling mechanism. The delivery systems can also include a delivery catheter extending from the handle assembly. The delivery catheter can include an outer shaft, which can be controlled by the first control mechanism; a prosthesis containing capsule comprising a proximal capsule portion connected to the outer shaft, and a distal capsule portion releasably coupled to the proximal capsule portion. After deploying a valve prosthesis, the capsule can be closed by activating the decoupling mechanism in the handle to rapidly close the distal and proximal capsule portions together. The delivery system can also include a centering element to guide the distal and proximal capsule portions together.

A device for delivery of a stent for a vessel, used for implanting a stent for the vessel 3 in the vessel, is disclosed. The device for delivery of a stent for the vessel includes a catheter (1) for insertion into the vessel of a living body, a balloon (2) mounted on an outer peripheral surface of the distal end side of the catheter and inflatable with a fluid supplied to the catheter, a stent for the vessel (3), formed of a biodegradable polymer to a tube form, mounted on the balloon in a diameter-contracted state and having self-expanding properties, and a stent holding member (21) formed of a polymer material to a tube form for covering at least a portion of the stent for the vessel from the catheter for holding the stent for the vessel on the balloon. The stent holding member has been drawn in the longitudinal direction. In the distal end of the stent holding member, located towards the distal end of the catheter, there is formed a tearing assisting portion (22). The stent holding member is torn along the tearing assisting portion, by expansion of the stent for the vessel attendant on inflation of the balloon, to release its holding of the stent for the vessel to enable expansion of the stent for the vessel (3).

The present invention is a method to enhance accuracy of irradiation with beam for an irradiation system with a beam. The irradiation system comprises a beam generation source, a mass analysis device, a beam transformer, a scanner which swings the beam reciprocally with high speed, a beam parallelizing device, an acceleration/deceleration device, an energy filtering device, and beam monitors. The beam transformer comprises a vertically focusing synchronized quadrupole electromagnet syQD and a horizontally focusing synchronized quadrupole electromagnet syQF. Consequently, it is possible to correct at least one of a deviation in beam divergence angle and a deviation in beam size within a range between a center trajectory and an outer trajectory after swinging of the beam by the scanner.

The invention relates to the field of medicine, in particular to a spine pedicle screw implanting and locating device. The spine pedicle screw implanting and locating device comprises hardware of a C-shaped arm, an image correction calibration plate, an image collection module, a locating robot, a path locating frame, a position tracking platform, a computer and the like, a spine pedicle screw implanting path planning module and a locating navigation module based on an X ray picture during an operation, wherein the spine pedicle screw implanting path planning module and the locating navigation module are stored in the computer. Through the spine pedicle screw implanting and locating device, according to the anatomical structure characteristics of a spine vertebral body, a coordinate system is established, an operation path planned in a 3D environment before the operation, an operation path planned in a 2D environment during the operation and an operation apparatus path during the operation are expressed, and by the use of the relationship of the three paths, a doctor is guided or a robot is controlled to complete precise operation path locating operation. The spine pedicle screw implanting and locating device can track the position relationships among all objects on a 2D image in real time, reflect the relationship between a tool and pedicle of vertebral arch actually, precisely and timely, eliminate errors of the traditional computer navigation system in an operation process, reduce the operation difficulty, and improve the operation efficacy.

A flexible or elastic brachytherapy strand that includes an imaging marker and/or a therapeutic, diagnostic or prophylactic agent such as a drug in a biocompatible carrier that can be delivered to a subject upon implantation into the subject through the bore of a brachytherapy implantation needle has been developed. Strands can be formed as chains or continuous arrays of seeds up to 50 centimeters or more, with or without spacer material, flaccid, rigid, or flexible.

The invention discloses a personalized minimally-invasive knee joint positioning guide plate used for knee arthroplasty and manufactured on the basis of medical image three-dimensional reconstruction and computer-aided design technologies, 3D (three-dimensional) printing or other machining methods, and particularly relates to accurate determination of a positioning joint surface. Firstly, a patient skeleton model is reconstructed on the basis of a two-dimensional medical image; preoperative planning is performed on the reconstructed model, and important parameters such as a lower extremity force line, a femoral rotation axis and an osteotomy reference point are determined to simulate osteotomy and prosthesis implantation; a positioning sheet (single positioning type and composite type) is determined and designed with the results. The positioning sheet is used for positioning with a local positioning principle by means of local area jointing, so that over-positioning and positioning instability are avoided; meanwhile, the wound area is reduced to the maximum extent. A dissection point is positioned through the reconstructed model, so that the lower extremity force line can be reconstructed accurately, and accurate osteotomy is realized.

The present invention is directed to an implantable drug depot useful for reducing, preventing or treating post-operative pain in a patient in need of such treatment, the implantable drug depot comprising a polymer and a therapeutically effective amount of a local anesthetic or pharmaceutically acceptable salt thereof, wherein the drug depot is implantable at a site beneath the skin to reduce, prevent or treat post-operative pain, and the drug depot is capable of releasing (i) a bolus dose of the local anesthetic or pharmaceutically acceptable salt thereof at a site beneath the skin and (ii) a sustained release dose of an effective amount of the local anesthetic or pharmaceutically acceptable salt thereof over a period of at least 4 days.

The present invention is directed to accounting for crystal cut error data in ion implantation systems, thereby facilitating more accurate ion implantation. One or more aspects of the invention also consider possible shadowing effects that can result from features formed on the surface of a wafer being doped. According to one or more aspects of the invention, crystal cut error data and optionally feature data also are periodically fed forward in one or more ion implantation stages or systems to ascertain how to re-orient the ion beam with respect to the workpiece to achieve desired implantation results.

A multipurpose ion implanter beam line configuration constructed for enabling implantation of common monatomic dopant ion species and cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept an ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass- selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection width and the analyzer magnet having a resolution at the mass selection aperture sufficient to enable selection of a beam of monatomic dopant ions of substantially a single atomic or molecular weight.

A highly retractable intravascular stent delivery system, including a tube assembly and a rotation driving assembly. The tube assembly includes an outer tube 5, an intermediate tube 6, and inner tube 7, wherein an intravascular stent 3 and a stent retaining block 4 are provided within the outer tube 5. The rotation driving assembly includes a housing 9, an outer screw 19, and an intermediate screw 14 located within the housing 9, as well as a driving member. The driving member allows two screws to rotate at opposite directions, so as to drive the outer tube 5 to move toward the proximal end, and the intermediate tube 6 pushes the stent retaining block 4 and the intravascular stent 3 to move toward the distal end. The system uses three-lay tube structure and uses driving gear to drive two screws to move at directions opposite to each other, such that the intermediate tube 6 and the outer tube 5 are driven to move to directions opposite to each other. Therefore, the axial retraction of the intravascular stents can be effectively offset and axial movement of the intravascular stents due to axial retraction of the intravascular stents is avoided, thereby accurately implanting the stents into the body.

Disclosed is a marker for image information matching. A marker for image information matching in accordance with an embodiment of the present invention is installed in an oral cavity of a patient to provide a reference point for obtaining image information on an oral tissue of the patient.

The invention relates to the field of medical instruments, in particular to a pedicle screw positioning and guiding device. The pedicle screw positioning and guiding device comprises a rack, a lifting frame, a first locking device, a sliding frame, a second locking device, a rotation rod, a third locking device, a distance measuring device and two guiders. Each guider comprises a sliding block and a guiding cylinder. The distance measuring device comprises an installation base and a measuring scale. The axis of the measuring scale is perpendicular to the axis of the rotation rod. The axis of the measuring scale and the axes of the guiding cylinders are located on the same plane. The axis of each guiding cylinder hinged shaft is perpendicular to the plane where the axis of the corresponding guiding cylinder is located. The positioning and guiding device further comprises a fourth locking device, a fifth locking device, a sixth locking device, a positioning linkage device, a first angle measuring device and a second angle measuring device. The positioning and guiding device can adjust the guiders to the position which is worked out through a computer in three-dimensional space, and therefore a pedicle screw is guided, accurate implanting of the pedicle screw is achieved, the device is precise in positioning, and the manufacturing cost is low.

The invention provides an atlantoaxial pedicle screw guider. The atlantoaxial pedicle screw guider is fixed at a position of a posterior arch tubercle of the atlas and used for guiding a fixing piece to be implanted into an implantation point positioned at the pedicle. The atlantoaxial pedicle screw guider is characterized in that the atlantoaxial pedicle screw guider comprises arc rack bodies, a positioning portion, and two hollow guiding cylinders, each arc rack body is provided with a penetrating through hole at the central part and two guiding grooves positioned at two sides of the penetrating through hole, the positioning portion includes a clamp opening used for being in occlusion with the posterior arch tubercle, two clamp legs, and an opening angle fixing member for fixing the opening angle to be in firm occlusion with the posterior arch tubercle, the two hollow guiding cylinders are fixed in the guiding grooves according to the implantation point to allow the fixing piece to penetrate through, and any clamp leg of the two clamp legs penetrates through the penetrating through hole so that the arc rack bodies and the positioning portion are fixed. According to the atlantoaxial pedicle screw guider, the implantation of the fixing piece is more precise, needle-insertion frequency and X-ray radiation can be reduced, the operation time is shortened, the operation is safer, the internal fixation is more reliable, the fracture healing effect is better, and the clinic application value is good.

The present invention discloses a cardiac apex implantation cuspid valve clamping device and a cardiac apex implantation cuspid valve clamping method. The cardiac apex implantation cuspid valve clamping device comprises an upper connecting piece, a sealing end piece and a central woven net are sequentially arranged on the upper connecting piece, a rod penetrating cavity is formed in the central woven net, and the upper connecting mechanism is arranged at a near end of the sealing end piece; an inner frame net is connected with a lower end of the central woven net to form an integrated structure; an outer edge of an outer frame net is integrally connected with an outer edge of the inner frame net, besides, a lantern ring is arranged in a middle part of the outer frame net, and a lower connecting mechanism is arranged on an outer ring surface of the lantern ring; elastic clamps are fixed on a surface of the inner frame net; a clamp opening mechanism is used for controlling the elastic clamps to open; an initial memory state of the outer frame net is folding and wrapping the inner frame net and elastic clamps towards a far end. During compression intervention, the cardiac apex implantation cuspid valve clamping device greatly reduces aperture diameter, a small-aperture diameter sheathing canal can be intervened, difficulties and strengths of surgeries are reduced, the large-widthelastic clamps can be used, a capture success rate is increased, the elastic clamps are independently controlled through corresponding pull wires, capture of valve leaflets is easy to control, and universality is strong.

The invention provides a manufacturing method for a dental implant assembly. The manufacturing method comprises the following steps: step S1, acquiring the data of the oral cavity of a patient based on CBCT, establishing a digital jaw bone model of the patient according to the data of the oral cavity, then printing a solid jaw bone model by using 3D printing technology according to the digital jaw bone model, and carrying out designing according to the agomphiasis condition of the patient and the digital jaw bone model so as to obtain a digital implant model, a digital model for dental implant fixing devices and a surgical stent model for dental implants applicable to the patient; step S2, simulation a dental implant operation on the solid jaw bone model to correct the digital implant model, the digital model for dental implant fixing devices and the surgical stent model for dental implants so as to obtain correction results; and step S3, printing the implants and the dental implant fixing devices by using 3D printing technology according to the correction results, carrying out surface treatment on the implants and the dental implant fixing devices, and preparing a surgical stent for the dental implants according to the correction results. The manufacturing method provided by the invention is ingenious in design and good in practicality.

A method of making dental plate implant includes the steps of preparing an oral scanning image generated from a tomogram of a patient's mouth; producing and scanning a substantial model from a rollover of the patient's mouth to prepare an oral model; positioning the oral model to the oral scanning image by comparing a positioning object (defined by the oral model) and a referential object (defined by the oral scanning image) respectively; conducting a multi-stage amplification calculation of the oral model to further generate a digital processing model; and processing the digital processing model through a machine tool to produce a dental plate implant.

Devices and methods for assessing the orientation and shape of vessel lumens and hollow portions of organs are described. The devices and methods are particularly adapted for determining the orientation and shape of the native heart valves to facilitate the later implantation of a prosthetic heart valve. The devices are typically catheter-based having an expandable member fixed to a distal end of the catheter. The devices and methods typically comprise deploying the expandable member percutaneously to a target location, expanding the expandable member, performing a valvuloplasty procedure to enlarge the diseased lumen and then performing an assessment of the diseased lumen with the expandable member to determine at least one property of the lumen. An implant device is inserted after assessment of the diseased lumen.

The invention discloses a method for converting carp magnetic resonance scanning coordinates into brain stereotaxic coordinates and belongs to the field of neuroscience. The method comprises the stepsthat a carp brain three-dimensional stereotaxic coordinate system and an auxiliary three-dimensional coordinate system on the surface of the skull are built; the two coordinate systems have a same coordinate origin O and a same X-axis, and both the included angles between the Y-axes and Z-axes of the two coordinate system are theta; the brain is subjected to magnetic resonance scanning imaging, and coordinate values of brain electrode implanting position points in the auxiliary coordinate system are determined; an algorithm is constructed by using the included angles theta, the magnetic resonance scanning coordinates are converted into the brain stereotaxic coordinates, and implanting of a brain electrode can be positioned and navigated. The method can position and navigate implanting ofthe brain electrode of a carp aquatic robot, and a new positioning and navigation method can also be provided for implanting of multiple biological brain electrodes.

Devices and methods for assessing the compliance of vessel lumens and hollow portions of organs are described. The devices and methods are particularly adapted for determining the compliance of the native heart valves to facilitate the later implantation of a prosthetic heart valve. The devices are typically catheter-based having an expandable member fixed to a distal end of the catheter. Located within the expandable member is an imaging member. The methods typically comprise deploying the balloon percutaneously to a target location, expanding the balloon, and determining the compliance of a lumen, particularly a cardiac valve. An optical coherence tomography apparatus is a preferred apparatus for determining compliance.