Global Patent Index - EP 1063919 A1

EP 1063919 A1 2001-01-03 - SENSOR AND METHOD FOR SENSING ARTERIAL PULSE PRESSURE

Title (en)

SENSOR AND METHOD FOR SENSING ARTERIAL PULSE PRESSURE

Title (de)

SENSOR UND VERFAHREN ZUR MESSUNG DES ARTERIELLEN BLUTDRUCKS

Title (fr)

CAPTEUR ET PROCEDE POUR CAPTER LA PRESSION ARTERIELLE DIFFERENTIELLE

Publication

EP 1063919 A1 (EN)

Application

EP 99912732 A

Priority

  • US 9906060 W
  • US 4501898 A
  • US 4542098 A

Abstract (en)

[origin: WO9947044A1] A method and a pulse pressure sensor for sensing an arterial pulse pressure waveform. In one embodiment, the pulse pressure sensor includes a housing (110), a diaphragm (120), a piezoelectric device (170), and a self-contained amplifier (190). The skin-contact diaphragm is attached across a recess or opening in the housing. The piezoelectric device has a first portion mounted in a fixed relationship to the housing and a second portion displacementally coupled to the diaphragm. The solid-state amplifier has a signal input coupled to the piezoelectric device, wherein the piezoelectric device and amplifier together have a frequency response at least including a range from below approximately 0.1 hertz to above approximately 250 hertz. In one such embodiment, the housing and the skin-contact diaphragm of the sensor are stainless steel. In one such embodiment, the diaphragm has a skin-contact surface with a skin-contact dimension of between approximately 0.4 inch and 0.6 inch. In one embodiment, the sensor includes a solid-state amplifier that includes a high-input-impedance MOSFET input stage having an input resistance high enough to provide a frequency response that extends below approximately 0.1 hertz.

IPC 1-7 (main, further and additional classification)

A61B 7/04; A61B 5/021; A61B 7/00

IPC 8 full level (invention and additional information)

A61B 5/021 (2006.01); A61B 7/00 (2006.01); A61B 7/04 (2006.01)

CPC (invention and additional information)

A61B 5/021 (2013.01); A61B 7/00 (2013.01); A61B 7/045 (2013.01)

Citation (search report)

See references of WO 9947044A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9947044 A1 19990923; AT 232319 T 20030215; AU 3104099 A 19991011; AU 3104399 A 19991011; DE 69905240 D1 20030313; DE 69905240 T2 20031120; EP 1062596 A1 20001227; EP 1062596 B1 20030205; EP 1063919 A1 20010103; HK 1033377 A1 20030606; WO 9948023 A1 19990923

INPADOC legal status


2007-11-02 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1033253

2007-01-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060707

2001-01-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001020

2001-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE