Device for measuring human blood sugar levels
First Claim
1. Apparatus for measuring human blood sugar levels, comprising:
- a catheter, the free end of which is to be positioned in a blood vessel, wherein the catheter comprises at least one optical waveguide, a light source for coupling light into the at least one optical waveguide, a point of measurement at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted through the blood and wherein the dispersed and/or transmitted light is coupled again into the at least one optical waveguide, a detector to receive the light which is returned, a computer unit for analysing the light received by the detector, a cleansing device located at the point of measurement for removing the tissue particles deposited from the blood, the cleansing device comprises a controllable actuator which frees or wipes clear a light emission orifice of the at least one optical waveguide when activated, and the cleansing device is controllable by the computer unit.
0 Assignments
0 Petitions
Accused Products
Abstract
Device for measuring human blood sugar levels with a catheter, the free end of which is positioned in a blood vessel, wherein the catheter consists of at least one optical waveguide comprising a light source for coupling light into the at least one optical waveguide, a measurement point at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted by the blood and wherein the dispersed and/or transmitted light is coupled again into the minimum of one return optical waveguide, a detector to receive the light which is returned, and a computer unit for analysing the light received by the detector. Provision is made for a cleansing device to be located at the point of measurement for removing the tissue particles deposited from the blood in order to provide a device which is as accurate as possible and which delivers constant measurement values over time for blood sugar levels which can be used as the basis for further data analysis.
-
Citations
42 Claims
-
1. Apparatus for measuring human blood sugar levels, comprising:
-
a catheter, the free end of which is to be positioned in a blood vessel, wherein the catheter comprises at least one optical waveguide, a light source for coupling light into the at least one optical waveguide, a point of measurement at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted through the blood and wherein the dispersed and/or transmitted light is coupled again into the at least one optical waveguide, a detector to receive the light which is returned, a computer unit for analysing the light received by the detector, a cleansing device located at the point of measurement for removing the tissue particles deposited from the blood, the cleansing device comprises a controllable actuator which frees or wipes clear a light emission orifice of the at least one optical waveguide when activated, and the cleansing device is controllable by the computer unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. Apparatus for measuring human blood sugar levels, comprising:
-
a catheter, the free end of which is to be positioned in a blood vessel, wherein the catheter comprises at least one optical waveguide, a light source for coupling light into the at least one optical waveguide, a point of measurement at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted through the blood and wherein the dispersed and/or transmitted light is coupled again into the at least one optical waveguide, a detector to receive the light which is returned, a computer unit for analysing the light received by the detector, a cleansing device located at the point of measurement for removing the tissue particles deposited from the blood, and the cleansing device comprises a controllable actuator, which comprises a piston which is inserted into a form-fitting opening located at the free end of the catheter and which moves between a position where the piston forms a seal flush with the catheter surface and a position where the piston fits into a recess located opposite the catheter surface, and that in the recessed position a light emission orifice of the at least one optical waveguide becomes free. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. Apparatus for measuring human blood sugar levels, comprising:
-
a catheter, the free end of which is to be positioned in a blood vessel, wherein the catheter comprises at least one optical waveguide, a light source for coupling light into the at least one optical waveguide, a point of measurement at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted through the blood and wherein the dispersed and/or transmitted light is coupled again into the at least one optical waveguide, a detector to receive the light which is returned, a computer unit for analysing the light received by the detector, a cleansing device located at the point of measurement for removing the tissue particles deposited from the blood, and the cleansing device comprises a controllable actuator which frees or wipes clear a light emission orifice of the at least one optical waveguide when activated, wherein a control action is achieved by means of a hydraulic or pneumatic line. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
-
-
33. Apparatus for measuring human blood sugar levels, comprising:
-
a catheter, the free end of which is to be positioned in a blood vessel, wherein the catheter comprises at least one optical waveguide, a light source for coupling light into the at least one optical waveguide, a point of measurement at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted through the blood and wherein the dispersed and/or transmitted light is coupled again into the at least one optical waveguide, a detector to receive the light which is returned, a computer unit for analysing the light received by the detector, a cleansing device located at the point of measurement for removing the tissue particles deposited from the blood, wherein the cleansing device comprises a controllable actuator which frees or wipes clean a light emission orifice of the at least one optical waveguide when activated, the detector and the computer unit are integrated into an implant together with an energy store for providing voltage, a control unit located extracorporeally for regulating human blood sugar levels, wherein measured values are transmitted by a telemetry unit to said control unit, an extracorporeal insulin pump for injecting insulin through the peritoneum, and a regulator integrated into the control unit which controls the insulin pump subject to the measured values in such a way that the desired blood sugar level is attained. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
-
Specification