201 results about "Direct vision" patented technology

A heart valve prosthesis and method of implanting the prosthesis are disclosed. A valve is mounted within a support apparatus that is deformable between a first condition and a second condition. The prosthesis has a cross-sectional dimension in the second condition that is less than a cross-sectional dimension of the supported valve when in first condition. The prosthesis can be implanted into a patient's heart, such as during a direct vision procedure through a tubular implantation apparatus that maintains the prosthesis in its second condition until discharged from the tubular apparatus.

A surgical instrument, guide, and method capable of being used for closure of peritoneum fascia, occlusion of bleeding vessels such as inferior epigastric, and for all uses related to accurately passing suture material through a guide into tissue. A tip of a surgical instrument in a standard suture- / needle-driving position with a sharp tip that opens and closes with the surgeon grasping suture material with the sharp tip is provided. Insertion of the tip / suture through tissue until the tip is seen through the peritoneum by direct vision begins the wound-closing procedure. The suture is released by opening and withdrawing the tip from the guide. The suture is recovered by using the guide to redirect the tip and puncturing the tissue opposite the first point of insertion. The tip grasps the suture and pulls the suture through the guide. The suture is pulled outside the wound, providing for rapid closure of the surgical incision. The guide is insertable within the wound to be closed and guides the surgical instrument at a predetermined angle from the longitudinal axis of the guide for optimum wound closure. Alternative embodiments of the guide include providing a slot through which non-linear surgical instruments may pass through an open or enclosed passageway.

A reciprocating surgical file system for precisely removing bone and / or other tissue is described. The system allows a user to maneuver the system and navigate into hard-to-access sites under a direct vision mechanism. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision removal of bone or other tissue. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.

The invention relates to shielded reciprocating surgical file system for precisely removing bone and / or other tissue material. The system allows a user to maneuver the system and navigate into hard to access sites under a direct vision mechanism included in the system. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision bone and / or tissue removal. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.

A reciprocating surgical file system for precisely removing bone and / or other tissue is described. The system allows a user to maneuver the system and navigate into hard-to-access sites under a direct vision mechanism. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision removal of bone or other tissue. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.

The invention relates to shielded reciprocating surgical file system for precisely removing bone and / or other tissue material. The system allows a user to maneuver the system and navigate into hard to access sites under a direct vision mechanism included in the system. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision bone and / or tissue removal. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.

A novel device and method for fusions inside a forward widely tapering human disc space. A stabilizing / guiding system is driven into and against the disc space. The device is further stabilized by spreading and gripping means inside both vertebral end plates. Rod retaining members hold calibrated rod units whose adapted tips perform reaming and threading of the disc space. Subsequently, the tapered cage or implant can be inserted by a free-hand method under direct vision into the prepared and tapered bed. Rod unit divergent angulation is preferably set to match that of the disc space as well as the implants so they obtain optimal distributed purchase of vertebral bone. In one embodiment, inserts are confluent with parallel medial walls rather than their long axes, increasing torsional or lateral translational stability and simplifying placement of additional bone chips. No tubular guide means are required.

An electronic vertical angle sensing and indicating device for use on aiming systems is provided for bow sights and for other aiming sights for projectile launchers. Improved vertical level measurement and display minimizes the left-right drift of a projectile by sensing and indicating to the user when the projectile launcher is tilted slightly prior to release of the projectile. The vertical level indicator is easily viewed within the field of direct or near direct vision and focus of the eye in a reduced profile that does not distract the operator from the task of accurately aiming the projectile is provided. One embodiment of the present invention positions the signal indicators in the far-field of view of the eye, so that all of the signal indicators, the sighting means and the distant target being viewed are simultaneously in focus or near-focus.

A method and apparatus for directly sensing both the focused image and the three-dimensional shape of a scene are disclosed. This invention is based on a novel mathematical transform named Rao Transform (RT) and its inverse (IRT). RT and IRT are used for accurately modeling the forward and reverse image formation process in a camera as a linear shift-variant integral operation. Multiple images recorded by a camera with different camera parameter settings are processed to obtain 3D scene information. This 3D scene information is used in computer vision applications and as input to a virtual digital camera which computes a digital still image. This same 3D information for a time-varying scene can be used by a virtual video camera to compute and produce digital video data.

A flexible direct vision fiberoptical viewing cable is placed within a urinary catheter with its tip located at a distal end of the catheter such that the surfaces of the distal end of both the viewing cable and the catheter are aligned so as to fit together in such a way as to form a composite smoothly curved surface to facilitate negotiating obstructions. The cable is maintained in this position within the catheter with the surfaces that comprise the tip of the instrument, maintained in alignment. The urethra is then viewed therethrough during all or part of the insertion procedure for observing and identifying obstructions that may be present and thereafter the fiberoptic cable is withdrawn while allowing the catheter to remain in place within the urethra.Another form of instrument includes a working sheath and an obturator. A method is also described for facilitating endoscopic examination and surgical procedures through the sheath.

A device for combining tomographic images with human vision using a half-silvered mirror to merge the visual outer surface of an object (or a robotic mock effector) with a simultaneous reflection of a tomographic image from the interior of the object. The device maybe used with various types of image modalities including ultrasound, CT, and MRI. The image capture device and the display may or may not be fixed to the semi-transparent mirror. If not fixed, the imaging device may provide a compensation device that adjusts the reflection of the displayed ultrasound on the half-silvered mirror to account for any change in the image capture device orientation or location.

A device for combining tomographic images with human vision using a half-silvered mirror to merge the visual outer surface of an object (or a robotic mock effector) with a simultaneous reflection of a tomographic image from the interior of the object. The device maybe used with various types of image modalities including ultrasound, CT, and MRI. The image capture device and the display may be enclosed in a sterile container (e.g., a probe bag) and a mirror and mirror housing may be separately attachable to the image capture device and display. In these embodiments, the mirror may be disposable and the sterility of the overall imaging device is maintained.

A novel device and method for fusions inside a forward widely tapering human disc space. A stabilizing / guiding system is driven into and against the disc space. The device is further stabilized by spreading and gripping means inside both vertebral end plates. Rod retaining members hold calibrated rod units whose adapted tips perform reaming and threading of the disc space. Subsequently, the tapered cage or implant can be inserted by a free-hand method under direct vision into the prepared and tapered bed. Rod unit divergent angulation is preferably set to match that of the disc space as well as the implants so they obtain optimal distributed purchase of vertebral bone. In one embodiment, inserts are confluent with parallel medial walls rather than their long axes, increasing torsional or lateral translational stability and simplifying placement of additional bone chips. No tubular guide means are required.

A direct vision cryosurgical and methods of use are described herein where the device may generally comprise an elongated rigid structure with a distal end, a proximal end, and a central lumen. The distal end may comprise a non-coring optically transparent needle tip with at least one lateral fenestration in communication with the central lumen. The distal end may also house at least one imaging device configured for distal imaging. A proximal end of the device may comprise a handle with a means for connecting the imaging device(s) to an imaging display(s), and a means for accessing bodily tissue in the vicinity of the distal end with a cryo-ablation probe through the central lumen and the lateral fenestration(s) for diagnostic or therapeutic purposes.

A minimally invasive orthopedic fastener for the repair of torn rotator cuff tendons. The rotator cuff is thereby repaired transarthroscopically to bring the tendons tight to the bone. This is accomplished by the use of a bone screw having a plurality of vanes pivotally mounted thereon. The vanes are pivotal from a retracted position extending along a length of the screw to an extended position extending substantially perpendicular to the shaft of the screw. The fastener is cannulated and taken down over a guide wire through a minimal incision to the operative site. Under direct vision, the screw is initially rotated into the bone by a screwdriver passed from the proximal end of the cannula to the distal end of the cannula to engage the fastener. The cannula is then partially withdrawn and by continued rotation of the screw, the vanes are moved into a position substantially perpendicular to the screw, thereby entrapping the tendons between the vanes of the screw and the bone.

A display unit which allows stereoscopic images to be displayed on a direct-vision liquid crystal panel is provided. The display unit has the formation in which liquid crystal is sandwiched in a gap between a pair of glass substrates. When linearly polarized lights whose polarizing directions are differentiated by 90° from each other by a pi cell are input alternately to the liquid crystal, images to be displayed turn out as two images whose polarizing directions differ by 90° from each other and which are displayed in a time-division manner. The images may be perceived as a stereoscopic image by viewing them by glasses having polarizing directions different by 90° for right and left eyes.

The invention relates to a supporting frame capable of being taken out. In the invention, a sandwich structure that a support is arranged between an inner membrane and an outer membrane is adopted; the connection part of the inner membrane and the outer membrane is opposite to a mesh of the supporting frame; and the supporting frame can freely wriggle in the space formed by the disconnection part of the inner membrane and the outer membrane, therefore, the supporting frame capable of being taken out, provided by the invention, has particularly good flexibility; a full covering membrane structure is adopted to ensure that granulation tissues cannot grow into the supporting frame; and a detachable design is adopted to ensure that the supporting frame can be conveniently taken out. The supporting frame capable of being taken out can be used for inducing and promoting the growth of a neonatal cavity tube, the covering and the epithelization of a mucous membrane, can be conveniently taken out and detached under the direct vision of an endoscopy after the mucous membrane of the neonatal cavity tube is epithelized and the organization is stable, and can be used for a temporary support under the situations of esophagus rebuilding and injury repairing, trachea rebuilding and injury repairing, urethra rebuilding and injury repairing, esophagus-esophagus anastomosing, intestine-intestine anastomosing, nasal cavity rebuilding and injury repairing, external auditory canal rebuilding and injury repairing and the like.

The invention discloses a cultivation method of scindapsus aureus hanging basket. The method comprises that fine perlite, coir dust and peat are mixed completely to obtain seedling matrix, and the seedling matrix is packed separately. Scindapsus aureus long vine is cut to be cuttings and soaked into water with the temperature of 40 to 45 DEG C, after the cuttings are soaked for 10 to 15 minutes, then the cuttings are taken out and water accumulated on leaf surface of the cuttings is dried. The cuttings are soaked into water after being cut, then are transferred to a nursery bed. In the first to the tenth day after being cut, the temperature is maintained to be 20 to 32 DEG C, the illumination is less than 5000 Lux, the illumination is increased gradually after 10 days, the illumination can reach 20000 Lux after new roots are grown, until the plant shape is plumpy and matrix can not be seen by direct vision, the illumination is decreased to less than 10000 Lux, then the cuttings are cultured for 7 to 10 days and sold. In the invention, the quality of the scindapsus aureus hanging basket which is cultured by the cultivation method is good, the leaf surface is clean and lustrous and the ornamental is pretty good. The weight is light by using the soilless culture, the pesticide residual volume is low, the production mode is environmental friendly, and has high and stable yield.

The invention discloses a prism-grating-prism spectrum imaging system which is integrated with the imaging technology and the light-splitting technology and has the direct vision property. The imaging system is mainly composed of a collimator objective, a prism-grating-prism (PGP) light-splitting element and an imaging objective. The prisms of the PGP light-splitting element are in an axisymmetric distribution, the light incident angle and the light diffraction angle on the grating meet the bragg conditions of grating; the collimator objective and the imaging objective are in a four glass system structure, the object space and the image space meet telecentric optical paths, and the surface of a receiver has mean illunication. The system has the advantages of higher light energy transmission, favorable imaging quality, direct vision, small volume, easy carrying, high spectral resolution and easy processing, assembly and adjustment. All the lenses or prisms are made of common domestic common glass, so the mass production cost is reduced. The imaging system can be used in the spectral cameras in the field of biomedicine, and also can be made into a civil hyper-spectral imaging system such as a pen type spectroscope and the like.

A method for creating a tract in retrograde fashion for nephrostomy tube creation comprising the steps of providing a puncture wire having a tissue penetrating tip shielded in a sheath, inserting the puncture wire and sheath through a channel in an ureteroscope, advancing the puncture wire from the sheath while visualizing under direct vision a position of the puncture wire, advancing the puncture wire through a selected calyx, and inserting antegrade a coaxial catheter over the puncture wire.

A method and set of instruments are disclosed particularly useful for carpal tunnel surgeries that allow a precision cut in the transverse carpal ligament (TCL) without direct vision or exposure of the ligament, except for its most proximal edge, but with guidance and safety of the cutting knife, eliminating or, at least very much decreasing, the probability of cutting lines in the wrong direction and inadvertent (iatrogenic) lesions to the surrounding structures. In one preferred embodiment the instrument comprises: a uniquely shaped cannulated guide rod, through which passes a flexible metal guide needle (33) which serves as a guideline for a uniquely shaped cutting knife or fasciotome (25) having a cannulated finger-like prong in the inferior edge of the blade portion of the knife.

The invention relates to a supporting stand secondary releasing introducer under the direct vision of an endoscope. An outer tube is fixed at the front end of a front handle. A mark ring is arranged at the tail end of the outer tube. An inner tube is fixed at the front end of a back handle. The inner tube goes through the front handle and is inserted into the outer tube. A supporting stand is arranged between the outer and the inner tubes. A tapered soft head is arranged on the inner tube installed at the front end of the supporting stand. A travelling handle is sleeved and connected in a sliding way on the inner tube arranged between the front and the back handles. The travelling handle has detachable connection with the inner tube. A locating piece is arranged between the travelling handle and the inner tube. The introducer can realize the secondary releasing of the supporting stand and has the advantage of accurate location.

The invention discloses a stone removal device for hepatological surgery department. The stone removal device comprises a moving box body, a drainage tank and a physiological saline tank are installedinside the moving box body, the drainage tank is connected to a negative pressure gas pump, the drainage tank is also connected to a drainage electric control valve, the physiological saline tank isconnected to a pressurized gas pump, the physiological saline tank is also connected to a cleaning electric control valve, a carbon dioxide gas treatment box is also installed inside the moving box body, the upper end of the carbon dioxide gas treatment box is connected to a gas intake pump through a second electronic control valve, the gas intake pump is connected to a gas outlet control valve, acontrol box is installed at the upper end of the moving box body, and a display screen and a control keyboard are installed at the upper end of the control box. The stone removal device is used for removing all gallstones in a gallbladder under the direct vision of a fiber choledochoscope, can achieve the functions of negative pressure drainage, physiological saline cleaning and tissue bulging bycarbon dioxide, greatly facilitates the stone removal work, improves the surgical efficiency of medical staff, facilitates the surgery, greatly reduces the preparation time and workload of the medical staff, provides a patient with good medical experience and is conducive to disease rehabilitation.

The invention discloses a small distortion large vision field stereo endoscope object lens structure. The small distortion large vision field stereo endoscope object lens structure comprises a direct vision endoscope and a strabismus endoscope, wherein the direct vision endoscope sequentially comprises protection glass, a first negative lens, a second negative lens, a parallel flat board, a flat convex lens and a subsequent glued lens group along a light spreading direction, and the strabismus endoscope sequentially comprises protection glass, a first negative lens, a second negative lens, a parallel flat board, a turning prism, a flat convex lens and a subsequent glued lens group along the light spreading direction. The small distortion large vision field stereo endoscope object lens structure has an ingenious structure, the two negative lenses are in front of a diaphragm, the first negative lens is a flat concave negative lens, the second negative lens is a convex concave negative lens, the two negative lenses are organically combined, system distortion can be corrected through optimization design, so large vision field small distortion endoscope optics systems can be designed out, the first negative lens and the second negative lens are respectively glued to the parallel flat board, the technology is good, positioning precision is high, the sealing technology is improved, and assembly and adjustment cost is reduced.

The invention discloses a method for adjusting the irradiation position of an ultraviolet lamp according to the view finding position of a camera and a mobile terminal. The mobile terminal comprises a mobile terminal body, the ultraviolet lamp, the camera and a controller. The method comprises the steps of: (1) starting the camera, enabling the view finding position to correspond to a sterilized object, and displaying the obtained image information in a display screen; (2) determining the relative coordinate value of the irradiation position of the ultraviolet lamp relative to the view finding position of the camera; and (3), adjusting the irradiation position of the ultraviolet lamp to the view finding position of the camera according to the relative coordinate value. In the sterilizing process of the mobile terminal, direct vision of human eyes on the sterilized object irradiated by the ultraviolet lamp can be avoided, and that the ultraviolet light is irradiated on the sterilized object can be better determined.