Blood pressure measurement device with a sensor locator

• US 6,159,157 A
• Filed: 04/23/1999
• Issued: 12/12/2000
• Est. Priority Date: 04/23/1999
• Status: Expired due to Fees

• Current Assignee: Medwave, Inc.
• Original Assignee: Medwave, Inc.
• Inventors: Curran, Timothy, Thede, Roger C., Poliac, Marius O., Archibald, G. Kent, Danielson, Orland H.
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US09/299,222
• Time in Patent Office: 599 Days
• Field of Search: 600/485, 600/500-503, 600/561
• US Class Current: 600/485
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 5/02116 of pulse wave amplitude A61B5/02225 takes precedence
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient

Abstract

A blood pressure measurement device with a sensor locator for placing a non-invasive blood pressure measurement device over an underlying artery, the sensor locator having a plurality of extending fingers spaced from each other coupled to the non-invasive blood pressure measurement device.

Claims

1. A locator for a non-invasive blood pressure measurement device, the locator comprising an extending guide adapted to be coupled to the non-invasive blood pressure measurement device the extending guide having a plurality of spaced guide members.

2. The locator of claim 1 wherein the plurality of spaced guide members guide includes a pair of fingers.

3. The locator of claim 2 further comprising a rotatable support member for connecting the pair of fingers to the non-invasive blood pressure measuring device.

4. The locator of claim 2 further comprising a support bridge coupling the pair of fingers.

5. A locator for a non-invasive blood pressure measurement device, the locator comprising:

a plurality of extending fingers spaced from each other; and

means for connecting the plurality of extending fingers to the non-invasive blood pressure measurement device.

6. The locator of claim 5 wherein the coupling of the locator ring includes mounting the locator ring on a mounting ring, the mounting ring being connected to the pair of support members.

7. A locator for a non-invasive blood pressure measurement device, the locator comprising:

a pair of support members adapted to be slidably connected to the non-invasive blood pressure measuring device; and

a locator ring having a pair of extending guide members spaced from each other coupled to the pair of support members.

8. The locator of claim 7 wherein the locator ring includes a contacting surface for orienting the non-invasive blood pressure measurement device relative to a wrist of a patient.

9. A locator for a non-invasive blood pressure measurement device, the locator comprising a U-shaped member having a pair of guides, the U-shaped member adapted to be coupled to the non-invasive blood pressure measurement device.

10. A locator for a non-invasive blood pressure measurement device, the locator comprising:

a pair of support members adapted to be connected to the non-invasive blood pressure measuring device;

a base member attached to the pair of support members; and

a locating cap having a plurality of protruding guides coupled to the base member.

11. A method for measuring blood pressure using a non-invasive blood pressure measurement device, the method comprising:

placing a locator member along a side of a wrist of a patient, such that the locator member positions the non-invasive blood pressure measurement device over an underlying artery;

applying axial pressure on the non-invasive blood pressure measurement device;

sensing blood pressure; and

calculating blood pressure values based on the sensed blood pressure.

12. The method of claim 11 further comprising orienting the non-invasive blood pressure measurement device relative to the wrist of the patient by placing a contacting surface of the locator member adjacent the wrist.

13. A non-invasive blood pressure measurement device for sensing blood pressure of an underlying radial artery of a patient, the device comprising:

a holddown assembly having a movable force applying member;

a sensor interface having a sensing surface for sensing arterial pressure; and

locator means for positioning the sensing surface of the sensor interface over the underlying radial artery in reference to a wrist of the patient.

14. The device of claim 13 wherein the locator means is slidably coupled to the holddown assemby.

15. A non-invasive blood pressure measurement device, the device comprising:

means for applying pressure to an artery so that the artery exhibits pressure data;

sensing means for sensing the pressure data;

locator means for positioning the sensing means above the artery,

the locator means having a guide with a plurality of spaced extensions adapted to contact a side of a wrist of a patient;

signal producing means connected to the sensing means for producing output signals corresponding to the sensed pressure data; and

processing means for receiving the output signals from the signal producing means, for deriving a plurality of parameters using sensed pressure data and for determining a blood pressure value using the derived parameters.