Blood pressure transducer
First Claim
Patent Images
1. A blood pressure transducer system, comprising:
- a catheter (1a) having a first end and a second end,a pressure tube (6) connected to one of the ends of said catheter (1a) wherein said pressure tube (6) and said catheter (1a) are in fluid communication, anda pressure transducer (8) connected to an end of said pressure tube (6), wherein said pressure transducer (8) comprises an optical fiber (80) made of a transparent elastomer and having a deformable side surface, a first end and a second end, wherein said pressure transducer (8) comprises a light source (9;
221) and an optical sensor (7;
223), wherein said pressure tube (6) is connected to said optical fiber (80) at an intermediate part of said optical fiber (80), and wherein said optical sensor (7;
223) is capable of detecting the change of the intensity of the light of said light source (9;
221) resulting from the change of a transmission factor of the optical fiber in response to the change of pressure exerted through said pressure tube (6) on the deformable side surface of said optical fiber (80).
2 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to a blood pressure transducer (8) and provides a safe and economical transducer by providing a novel optical fiber (80) made of a transparent elastomer. The present invention provides an invasive direct blood pressure transducer (8) of an external sensor system consisting of a catheter (1a), a pressure tub (6) connected to the catheter at one of the ends thereof and a pressure transducer (8) connected to the other end of the pressure tube (6), part of the pressure transducer is composed of an optical fiber (80) made of a transparent elastomer.
27 Citations
19 Claims
-
1. A blood pressure transducer system, comprising:
-
a catheter (1a) having a first end and a second end, a pressure tube (6) connected to one of the ends of said catheter (1a) wherein said pressure tube (6) and said catheter (1a) are in fluid communication, and a pressure transducer (8) connected to an end of said pressure tube (6), wherein said pressure transducer (8) comprises an optical fiber (80) made of a transparent elastomer and having a deformable side surface, a first end and a second end, wherein said pressure transducer (8) comprises a light source (9;
221) and an optical sensor (7;
223), wherein said pressure tube (6) is connected to said optical fiber (80) at an intermediate part of said optical fiber (80), and wherein said optical sensor (7;
223) is capable of detecting the change of the intensity of the light of said light source (9;
221) resulting from the change of a transmission factor of the optical fiber in response to the change of pressure exerted through said pressure tube (6) on the deformable side surface of said optical fiber (80). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A pressure transducer, comprising:
-
an optical fiber (80) made of a transparent elastomer and having a deformable side surface, a first end and a second end, a light source (9;
221),an optical sensor (7;
223), anda means for connecting a pressure tube (6) at an intermediate part of said optical fiber (80), wherein a change of an applied pressure on the deformable side surface of the optical fiber causes a change of a transmission factor of the optical fiber and a correlatable change of an output signal from said optical sensor (7;
223), wherein the optical fiber (80) is disposed in a cell (10) and is held in place by a packing material (11) which frees the optical fiber (80) to the cell (10), and that the cell (10) comprises a flange portion (14) for connecting the pressure tube (6) thereto. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification