Catheter for measuring pressure

• US 20030167022A1
• Filed: 01/23/2003
• Published: 09/04/2003
• Est. Priority Date: 07/26/2000
• Status: Abandoned Application

• Current Assignee: Laborie Medical Technologies Inc.
• Original Assignee: Laborie Medical Technologies Inc.
• Inventors: Dijkman, Gerrat
• Application Number:
  US10/343,159
• Publication Number:
  US 20030167022A1
• Time in Patent Office: Days
• US Class Current: 600/561
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00

Abstract

The invention relates to a catheter for performing an in vivo pressure measurement, comprising a catheter tube with at least one channel for a pressure-conducting, medium, a pressure sensor (4,5) for placing in contact with the medium and a liquid space (40) provided with at least two ports (41,43) where in the at least one channel is connected to a first port (41), characterized in that the liquid space is a pressure chamber (40) in which the pressure sensor (4,5) is accommodated. The invention also relates to a pressure chamber as described as component of a catheter according to the invention. The invention likewise relates to a connector unit comprising a housing provided with one or more recesses which are each intended to receive a pressure chamber (40) of a catheter according to the invention, wherein electronic means for connecting to the pressure sensor (4,5) are arranged in the housing.

Claims

1. Catheter for performing an in vivo pressure measurement, comprising a catheter tube (12, 19, 21, 24, 28) with at least one channel (17) for a pressure-conducting medium, a pressure sensor (4, 5) for placing in contact with the medium, and a liquid space (10, 40) provided with at least two ports (1, 3, 41, 43), wherein the at least one channel (17) is connected to a first port (1), characterized in that the liquid space is a pressure chamber (1) in which the pressure sensor (4, 5) is accommodated.

2. Catheter as claimed in claim 1, wherein the pressure chamber is provided with a tap (10) provided with three ports (1, 2, 3), wherein the at least one channel (17) is connected to a first port (1) and a second port (2) is in open communication with the environment, and the tap (10) is adapted for connection of the third port (3) as required to the first (1) or the second port (2), and wherein the pressure sensor (4, 5) is provided in the third port (3) in close proximity to the first port (1).

3. Catheter as claimed in any of the foregoing claims, wherein the catheter tube (19, 21, 23) comprises at least two channels (17, 22), wherein each channel (17, 22) is connected to the first port (1) of a pressure chamber (10, 40) provided with at least two ports, and wherein a pressure sensor (4, 5) is provided in each pressure chamber (10, 40).

4. Pressure chamber as described as component of a catheter as claimed in any of the foregoing claims.

5. Connector unit comprising a housing (30) provided with one or more recesses (31) which are each intended to receive a pressure chamber (10, 40) of a catheter as claimed in any of the foregoing claims, wherein electronic means for connecting to the pressure sensor (4, 5) are arranged in the housing.