摘要:
Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
摘要:
A method and device for high-resolution three-dimensional (3-D) imaging which obtains camera pose using defocusing is disclosed. The device comprises a lens obstructed by a mask having two sets of apertures. The first set of apertures produces a plurality of defocused images of the object, which are used to obtain camera pose. The second set of optical filters produces a plurality of defocused images of a projected pattern of markers on the object. The images produced by the second set of apertures are differentiable from the images used to determine pose, and are used to construct a detailed 3-D image of the object. Using the known change in camera pose between captured images, the 3-D images produced can be overlaid to produce a high-resolution 3-D image of the object.
摘要:
A device and method for three-dimensional (3-D) imaging using a defocusing technique is disclosed. The device comprises a lens, at least one polarization-coded aperture obstructing the lens, a polarization-sensitive sensor operable for capturing electromagnetic radiation transmitted from an object through the lens and the at least one polarization-coded aperture, and a processor communicatively connected with the sensor for processing the sensor information and producing a 3-D image of the object.
摘要:
Examples of apparatus, methods, and compositions for endodontic treatments are described. The apparatus can include a fluid platform configured to substantially retain fluid in a tooth chamber during treatment. The fluid platform can help maintain fluid circulation in the tooth chamber as fluid flows into and out of the tooth chamber. The apparatus can also include a pressure wave generator configured to generate acoustic waves that can be used for cleaning root canals and tooth surfaces in the tooth chamber. An access opening can be formed, and the pressure wave generator can be used to remove organic material from the tooth chamber. In some treatments, after cleaning, the tooth chamber can be only partially filled by an obturation material. In other treatments, substantially the entire tooth chamber can remain unfilled by the obturation material. After cleaning the tooth, the access opening can be sealed, using, e.g., a coronal seal.
摘要:
A medical device for placement of regional anesthesia catheters. The device comprises a hollow shaft needle, a plunger attached to the posterior end of the needle, a housing dimensioned so that plunger can slide inside the housing with friction, a regional anesthesia catheter preloaded inside the needle, a protective cover sheath covering the catheter, and a catheter adaptor attached to posterior end of the sheath and the catheter. The medical device allows a practitioner to quickly and effectively place a regional anesthesia catheter inside an organism without the use of an assistant, and with minimal risk of contaminating the catheter before it enters the organism's body. At the end, the needle is withdrawn inside the housing and disposed.
摘要:
The invention discloses a trabecular stent and methods for treating glaucoma. The stent may incorporate an intraocular pressure sensor comprising a compressible element that is implanted inside an anterior chamber of an eye, wherein at least one external dimension of the element correlates with intraocular pressure. In some embodiments, the sensor may be coupled to the stent. Also disclosed are methods of delivery of the stent and the sensor to the eye.
摘要:
First and second structures are connected by helical fibers. The orientation between the first and second structures are changed, and by doing so, the positions of the helical fibers are correspondingly changed. The position of change of the helical fibers can be used for a pumping effect, or to change some other fluidic characteristics. One other fluidic characteristics, for example, may use the movement of the helical fibers as a valve.
摘要:
A method is provided for creating composites by combining pre-fabricated nanoscale structures (nanostructures) and other materials in which the nanostructures are anchored. This method results in anchored nanostructures with their base held and encased within the anchoring material to a specified depth and with a specified length of protrusion of the nanostructures from the anchoring material. This represents a major advance over previous methods of creating composites containing nanostructures which were limited to fully embedded nanostructures or, at best, very limited and uncontrolled protrusion of nanostructures. In summary, the current method involves bringing nanostructures and anchoring materials into physical contact in a controlled fashion and optionally conducting a treatment step to complete the anchoring process.
摘要:
A device and methods for continuous precision blood sampling from a patient with a micro impedance pump as the driver in a microfluidic system. Depending on the needs of medical technologies, the micro impedance pump in the intravascular diagnostic and therapeutic sampling system serves in a forward pumping function for blood sampling, in a backward infusing for therapeutic treatment, and in a valving function for controlling fluid flow.
摘要:
Disclosed herein are methods, devices, and other components for synthesizing polymers. In some embodiments, numerous sites can be multiplexed together to allow for effective nucleic acid synthesis.