Device for noninvasive blood pressure measurement

• US 6,171,255 B1
• Filed: 06/16/1999
• Issued: 01/09/2001
• Est. Priority Date: 01/20/1999
• Status: Expired due to Fees

• Current Assignee: Drager Medizintechnik GmbH
• Original Assignee: Drager Medizintechnik GmbH
• Inventors: Kemper, Pieter W. J. M., Landowski, Christoph, Ise, Edgar
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US09/334,423
• Time in Patent Office: 573 Days
• Field of Search: 600/490, 600/453-456, 600/500
• US Class Current: 600/490
• CPC Class Codes: A61B 5/0225 the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
• CPC Class Codes: A61B 5/7207 of noise induced by motion artifacts

Abstract

A pneumatic system of a device for noninvasive blood pressure measurement includes a pneumatic cuff which is connected to a multisensor block (9) by means of a pneumatic connection line (26). At least one sensor (13) sending electric output signals for measuring physiological parameters is connected to the multisensor block (9) by an electric connection line (23). The multisensor block (9) is connected to an evaluating and supply unit (8) by a single hybrid cable (10) containing a gas-carrying line (14) and at least two electric lines (15, 15′).

Claims

1. A device for noninvasive blood pressure measurement, comprising:

a pneumatic cuff;

a multisensor block;

a pneumatic connection line, said pneumatic cuff being connected to said multisensor block by said pneumatic connection line;

a sensor sending electric output signals for the measurement of physiological parameters;

an electric connection line, said sensor being connected to said multisensor block by means of an electric connection line;

a single hybrid cable containing a gas-carrying line and at least two electric lines; and

an evaluating and supply unit, said multisensor block being connected to said evaluating and supply unit by said single hybrid cable.

2. A device in accordance with claim 1, wherein said gas-carrying line and said at least two electric lines form said hybrid cable with a common outer sheath, which is not elastic in a longitudinal direction, wherein said gas-carrying line covers a geometric center of said hybrid cable.

3. The device in accordance with claim 2, wherein said gas-carrying line and said at least two electric lines, are twisted in said sheath with a twist cycle of from 50 to 300 mm.

4. The device in accordance with claim 2, wherein said sheath itself or a part of said sheath consists essentially of a fiber-reinforced material.

5. The device in accordance with claim 2, wherein said sheath itself or a part of said sheath consists essentially of a composite material.

6. The device in accordance with claim 5, wherein said sheath itself or a part of said sheath consists essentially of a synthetic fiber composite material.

7. The device in accordance with claim 5, wherein said sheath itself or a part of said sheath consists essentially of a carbon fiber composite material.

8. The device in accordance with claim 5, wherein said sheath itself or a part of said sheath consists essentially of a ceramic fiber-reinforced composite material.

9. The device in accordance with claim 1, wherein said multisensor block has a pneumatic plug-and-socket connection for said pneumatic connection line and an electric plug-and-socket connection for at least one of said electric connection line.

10. A blood pressure measurement system, comprising:

a pneumatic cuff;

a sensor unit including a housing;

a pneumatic connection line, said pneumatic cuff being connected to said sensor unit by said pneumatic connection line;

a sensor sending electric output signals for the measurement of physiological parameters;

electric connection line, said sensor being connected to said sensor unit by means of an electric connection line;

a single hybrid cable containing a gas-carrying line and at least two electric lines; and

an evaluating and supply unit, said sensor unit being connected to said evaluating and supply unit by said single hybrid cable.

11. The system in accordance with claim 10, wherein said gas-carrying line and said at least two electric lines form said hybrid cable with a common outer sheath, which is not elastic in a longitudinal direction, wherein said gas-carrying line covers a geometric center of said hybrid cable.

12. The system in accordance with claim 11, wherein said gas-carrying line and said at least two electric lines, are twisted in said sheath with a twist cycle of from 50 to 300 mm.

13. The system in accordance with claim 11, wherein said sheath itself or a part of said sheath consists essentially of a fiber-reinforced material.

14. The system in accordance with claim 11, wherein said sheath itself or a part of said sheath consists essentially of a composite material.

15. The system in accordance with claim 14, wherein said sheath itself or a part of said sheath consists essentially of a synthetic fiber composite material.

16. The system in accordance with claim 14, wherein said sheath itself or a part of said sheath consists essentially of a carbon fiber composite material.

17. The system in accordance with claim 14, wherein said sheath itself or a part of said sheath consists essentially of a ceramic fiber-reinforced composite material.

18. The system in accordance with claim 10, wherein said multisensor block has a pneumatic plug-and-socket connection for said pneumatic connection line and an electric plug-and-socket connection for at least one of said electric connection line.