摘要:
The invention is directed to a ultrafiltration membrane that is capable for the retention of endotoxines and cytokine inducing substances (CIS) including bacterial DNA and/or DNA fragments from fluid and/or liquid media. The invention is further directed to a method of manufacturing such ultrafiltration membranes in a high quality and in an effective and time saving procedure, and to the use of such membranes for the retention of substances from fluids or liquids. The ultrafiltration membrane of the invention consists of a polymer blend comprising at least one hydrophobic polymer containing sulfur in its back bone, at least one hydrophilic, uncharged homo-polymer of polyvinylpyrrolidone and at least one polymer containing cationic charges. The method of manufacturing such a ultrafiltration membrane comprises dissolving at least one hydrophobic polymer containing sulfur in its back bone and at least one hydrophilic, uncharged polyvinylpyrrolidone and at least one polymer containing cationic charges in at least one solvent to form a polymer solution, subjecting the formed polymer solution to a diffusion-induced phase separation to prepare a ultrafiltration membrane, washing and subsequently drying of the ultrafiltration membrane.
摘要:
A system for liver dialysis makes use of a high cut-off hemodialysis membrane for removing water-soluble and protein-bound toxins from the blood of a person in need. A high cut-off hollow fiber hemodialysis membrane has improved potential to remove albumin-bound toxins and inflammatory mediators.
摘要:
A system for liver dialysis makes use of a high cut-off hemodialysis membrane for removing water-soluble and protein-bound toxins from the blood of a person in need. A high cut-off hollow fiber hemodialysis membrane has improved potential to remove albumin-bound toxins and inflammatory mediators.
摘要:
A method and arrangement for transmitting radiation emitted by LEDs operated in pulsed operation via at least one optical waveguide, wherein a first optical waveguide having first and second coupling surfaces is assigned to each LED, the first optical waveguides are in each case aligned, by their first coupling surfaces, with an assigned stationary LED, the second coupling surfaces are arranged on a closed path and a coupling surface of a second optical waveguide is assigned to the second coupling surfaces. In order that a high light power can be coupled into the second optical waveguide by means of the LEDs, it is provided that the second optical waveguide, in accordance with the clocking of the switched-on LEDs, can be aligned with the second coupling surface of a first optical waveguide from at least one switched-on LED.
摘要:
The invention relates to a method for detecting properties or alterations in at least one semitransparent layer of a body of a tooth by applying light escaping from at least one light guide via the front thereof to the body, as well as for recording at least one area of the body by means of a camera and subsequently assessing the image determined by the sensor. In order to be able to detect alterations or properties with high accuracy and a high image quality, it is proposed to place the front of the light guide on the body in order to subject the body to the light of the light guide.
摘要:
The present application relates to an apparatus and method in the field of dentistry and in particular to optical tools for diagnosis and imaging. It is a problem of the prior art that the use of fibre optic components yield a bulky dental camera with poor resolution. It is an object of the present invention to provide an imaging device (55) for dental instruments comprising a chamber adapted to be secured to the head of a dental instrument and for receiving and removing an imaging device (1), the chamber also adapted for isolating said imaging device from said dental instrument without compromising sterility of the dental instrument, comprising an optical window (53). The imaging device is easily removable from the dental instrument and electronic image detection occurs at the instrument head.
摘要:
A method for determining a combined data record for an object using individual data records based on individual scans of the object, the scans being measured using at least one sensor. To avoid accumulating errors and allow individual data to be rectified or corrected, first partial scans of the object are measured using at least one first sensor and are aligned relative to one another and/or corrected using second partial scans performed by at least two second sensors that are stationary relative to one another, and the individual data records for the combined data record are determined from the aligned and/or corrected partial scans.
摘要:
An integrated blood treatment module comprises a blood treatment device (1) having a housing (2) and a first end-cap (4) and a second end-cap (5) closing both ends of the housing (2). A pump hose (17) for a peristaltic pump has a first end (18) that is secured to the housing (2) and a second end (16) that is connected to a blood inlet port (15) of the first end-cap (4) so as to form a loop. A degassing device (30) is connected to the second end-cap (5). The degassing device (30), which, in use, is full of liquid, comprises a hydrophobic membrane through which bubbles and micro-bubbles escape the degassing device.
摘要:
A fluid distribution module (1) for causing and monitoring the circulation of fluids from and to a patient through an extracorporeal blood treatment device, comprises a degassing device (11) connected to a connecting structure (10). The degassing device (11) comprises a first chamber (12) having a lower inlet (13) for a liquid and a second chamber (14) having an upper opening (79) closed by a hydrophobic membrane (78) and an outlet (15) for discharging the liquid. The connecting structure (10) has at least a first and a second conduits (20, 21) defined therein, wherein the first conduit (20) comprises a first end for connection to a discharge tube (7) from the treatment device and a second end connected to the inlet (13) of the first chamber (12) of the degassing device (11), and the second conduit (21) comprises a first end connected to the outlet (15) of the second chamber (14) of the degassing device (11) and a second end for connection to a blood return tube (6) to a patient.
摘要:
A method and apparatus for the ablation of hard biological material, such hard dental material, using a rapidly pulsed laser employ a crystal disposed in the propagation path of the laser radiation, the crystal being disposed at the laser output and serving as an interface with an optical conductor which conveys the laser radiation to the treatment site. The crystal smooths the time/intensity characteristics of the pulsed laser radiation to the extent that transmission to the treatment site using optical wave guides is possible. Additional protective features are provided to prevent the ablated biological material to destroy the exposed optical end surfaces of the treatment applicator. Additional design features improve the ergonomic efficiency of the handpiece and its ability to be sterilized.