Catheter system
First Claim
1. A catheter system for continuously measuring the centrovenous oxygen saturation and/or measuring the local concentration of injected indocyanine green, having a flexible, elongated, centrovenously applicable basic body, a fiber-optic probe (8) for taking reflecto-oximetric measurements, a fiber-optic lumen for housing the fiber-optic probe and fastening means for preventing a longitudinal shift of the fiber-optic probe relative to the fiber-optic lumen, the fastening means being detachable to enable a longitudinal shift of the fiber-optic probe relative to the fiber-optic lumen for removal of the fiber-optic probe, wherein the fastening means has a connecting piece securely connected with the fiber-optic probe and a counterpart securely connected with the centrovenously applicable basic body which can be joined together, and that, when connected, the distance between the distal end of the centrovenously applicable basic body and the distal end of the fiber-optic probe is set at a predetermined value by the secure connections between probe and connecting piece as well as basic body and counterpart.
1 Assignment
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Accused Products
Abstract
A catheter system is suitable for the simultaneous, continuous, mutually unaffected measurement of the centrovenous oxygen saturation and the local concentration of injected indocyanine green. It has a centrovenous catheter with a fiber-optic lumen and a fiber-optic probe that can be inserted into the fiber-optic lumen for taking reflecto-oximetric measurements at a first wavelength of 660 nm, a second measuring wavelength of 805 nm and a reference wavelength of 880 nm. To prevent a longitudinal shift of the fiber-optic probe relative to the fiber-optic lumen, a connecting piece, securely connected to the fiber-optic probe, and a counterpart, securely connected to the catheter, are provided which can be joined together. The fiber-optic lumen which continues in the interior of the connecting piece can be cleaned when the connecting piece is attached to the counterpart. For this purpose, the connecting piece has a cleansing attachment for connecting a cleansing device. The cleaning takes place through the cleansing channel.
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Citations
20 Claims
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1. A catheter system for continuously measuring the centrovenous oxygen saturation and/or measuring the local concentration of injected indocyanine green, having
a flexible, elongated, centrovenously applicable basic body, a fiber-optic probe (8) for taking reflecto-oximetric measurements, a fiber-optic lumen for housing the fiber-optic probe and fastening means for preventing a longitudinal shift of the fiber-optic probe relative to the fiber-optic lumen, the fastening means being detachable to enable a longitudinal shift of the fiber-optic probe relative to the fiber-optic lumen for removal of the fiber-optic probe, wherein the fastening means has a connecting piece securely connected with the fiber-optic probe and a counterpart securely connected with the centrovenously applicable basic body which can be joined together, and that, when connected, the distance between the distal end of the centrovenously applicable basic body and the distal end of the fiber-optic probe is set at a predetermined value by the secure connections between probe and connecting piece as well as basic body and counterpart.
- 17. Light source and measuring device for attachment to a fiber-optic probe which can be inserted in a centrovenous catheter for the simultaneous, mutually unaffected measurement of centrovenous oxygen saturation and the local concentration of injected indocyanine green, wherein the light source and measuring device is configured for the simultaneous emission and measurement of radiation of two measuring wavelengths and one reference wavelength.
Specification