摘要:
The invention reports on the use of multi-reactive polymerizable surfactants in mixtures of polymerizable mesogenic materials. The polymerizable surfactants are readily polymerized into the liquid crystal film and build a protective topcoat layer. The invention also relates to a method of producing polymeric optical films with improved stability by using the surfactants. Uses of these films are given for various applications including security applications and displays.
摘要:
A liquid crystal display device produced through the steps of injecting a polymerizable monomer-containing liquid crystal composition between two substrates and, while applying a voltage between opposing transparent electrodes of the substrates, polymerizing the monomer, wherein the polymerizable monomer contained in the liquid crystal composition has one or more ring or condensed ring structures and functional groups bonded directly to the ring or condensed ring structure.The monomer is preferably represented by the following general formula: P1-A1-(Z1-A2)n-P2 wherein P1 and P2 are acrylates or the like, A1 and A2 are 1,4-phenylenes or the like, Z1 is —COO— or the like, and n is 0 to 2.
摘要:
A stimulating needle and catheter system, including components, is provided such that the position of the stimulating needle or the stimulating catheter may be identified after insertion into the body of a patient by electrically stimulating and thus locating a specific nerve. Use of the needle and catheter system is eased by providing the system to the medical practitioner in a unitary structure. That is, the needle and catheter are connected by a catheter lock. The catheter lock is attached to the hub of the needle and can be actuated to either firmly grip the catheter or allow the catheter to move axially with respect to the lock and needle assembly. Thus, supplying the catheter to the practitioner already locked into the catheter lock allows the practitioner to insert the needle into the patient and, when ready, release the catheter for disposal through the needle into the patient. This and other disclosed features allow the medical practitioner to focus attention on the medical procedure.
摘要:
The invention relates to a polymerizable liquid crystal material containing at least one polymerizable surface-active compound, its use for the preparation of anisotropic polymer films, and the use of the liquid crystal material and the polymer films in optical and electrooptical devices, and for decorative and security applications.
摘要:
A catheter includes a tube formed of plastic, a helical spring coil formed of metal and a ribbon which is longitudinally substantially non-extendable. The coil is coaxially disposed within the tube and substantially coextensive longitudinally with the tube. The ribbon is disposed within the coil, proximal ends of the ribbon and the coil being secured together, and the ribbon distal end being secured to the coil body at a predetermined point of the coil body adjacent but substantially proximally spaced from the coil distal end. The ribbon precludes substantial longitudinal extension of the coil body intermediate the coil proximal end and the predetermined point, thereby to limit longitudinal extension and increase the pull strength of the catheter.
摘要:
The invention relates to an alignment layer with improved adhesion to liquid crystal (LC) films, to a precursor material used for the preparation of such a layer, to a laminate comprising such a layer and at least one LC polymer film, and to the use of the alignment layer and the laminate for optical, electrooptical, decorative or security uses and devices, wherein the alignment layer and the precursor material comprise at least one reactive mesogen in monomeric, oligomeric or polymeric form.
摘要:
The invention relates to a transflective vertically aligned (VA) liquid crystal display (LCD) comprising a patterned quarter wave foil (QWF). The display (10) comprises, in a particular, front and back electrodes (14a, 14b, 14c) provided on transparent substrates (lia, llb) and sandwiching a LC medium (12), so as to define reflective (10a) and transmissive sub-pixels (10b). The patterned QWF (16), which is preferably provided inside the LC cell (in-cell application), has regions (16a) which provide a defined retardation and cover the reflective sub-pixels (10a), and regions (16b) having no on-axis retardation and covering the transmissive sub-pixels (10a).
摘要:
A medical apparatus having first and second relatively movable parts, a drive means for causing relative movement therebetween, and control means for controlling the operation of drive means, the control means including a sensor for detecting the relative position of the first and second parts, the control means including at least one of an acceleration control system and a deceleration control system, the acceleration control system having a first acceleration control for operating the drive means in a first acceleration phase in which the relative position is periodically detected and power fed to the drive means is increased using a preset power increase protocol until relative motion between the first and second parts is detected by the sensor, and a second acceleration control for operating the drive means in a second acceleration phase, after the first acceleration phase, in which the relative speed between the first and second parts is accelerated up to a set speed value at a set acceleration rate, and the deceleration control system includes a deceleration control for operating the respective drive means in a deceleration phase in which power fed to the drive means is decreased using a preset power decrease protocol.
摘要:
A catheter connector for coupling to a catheter, the connector having a body part, a tubular shaped compressible plug situated in a bore in part, with the proximal end of the catheter insertable into the bore of the plug, and a lever pivotably mounted to the housing part. Pivoting of the lever applies an axial force on one end of the plug causing the plug to deform radially inward and tightly engage the proximal end of the catheter.
摘要:
A cell necrosis apparatus for delivering thermal microwave energy to a specific site in a body, including: a. a microwave generator, b. a coolant delivery system for delivering and circulating a quantity of cooled liquid coolant via inlet and return passageways, c. a probe including a probe handle and a probe body having a proximal portion coupled to the probe handle and a distal portion, d. a microwave antenna in the distal portion of the probe body for applying thermal microwave energy to a specific site in cell necrosis treatment, and e. a microwave transmission line extending from the microwave generator to and through the probe handle and to and through the probe body to the microwave antenna and electrically coupled thereto, where the inlet and return coolant flow passageways extend from the coolant delivery system to and through the probe handle and thence extend coaxially about the microwave transmission line and along the length thereof within the probe body, and extend coaxially about the antenna and long the length thereof within the probe body, and where a first of the inlet and return coolant flow passageways is radially outward of and immediately adjacent the microwave transmission line and the antenna within the probe body and the other of the inlet flow passageways is radially outward of the first flow passageway.