Blood pressure sensor locator

• US 5,642,733 A
• Filed: 04/08/1996
• Issued: 07/01/1997
• Est. Priority Date: 04/08/1996
• Status: Expired due to Fees

• Current Assignee: Medwave, Inc.
• Original Assignee: Medwave, Inc.
• Inventors: Woessner, Roger J., Archibald, G. Kent, Danielson, Orland H.
• Primary Examiner(s): Cohen, Lee S.
• Assistant Examiner(s): YARNELL, BRYAN KEITH
• Application Number:
  US08/628,082
• Time in Patent Office: 449 Days
• Field of Search: 128/633, 128/664-8, 128/672, 128/677, 128/678, 128/687, 128/689-691, 128/696, 604/115, 604/116
• US Class Current: 600/485
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/6833 Adhesive patches

Abstract

A blood pressure sensor locator for locating a blood pressure sensing device over an underlying artery of a patient includes a base, an adhesive on an underside of the base for coupling the base to an anatomy of the patient and a guide supported by the base and configured for contacting the sensing device to locate an aligned sensing device over the underlying artery.

Claims

1. A blood pressure sensor locator for locating a blood pressure sensing device over an underlying artery of a patient, the locator being separate from the sensing device, the locator comprising:

a flexible base;

means for coupling the flexible base in a selected position adjacent an anatomy of the patient proximate the underlying artery; and

a guide opening through the flexible base and configured to locate and align the sensing device over the underlying artery when the sensing device is connected to the patient;

so that the sensing device can be attached to and removed from the patient without disturbing the position of the flexible base.

2. The locator of claim 1 wherein the base is flexible so as to conform to the anatomy of the patient.

3. The locator of claim 1 wherein the flexible base includes a layer of open celled foam.

4. The locator of claim 1 wherein the guide opening is sized for at least partially mating with and at least partially receiving the sensing device.

5. The locator of claim 4 wherein the locator includes a transparent thin film spanning the guide opening.

6. The locator of claim 5 wherein the thin film includes alignment marks for aligning the guide opening over the underlying artery.

7. The locator of claim 4 wherein the guide opening is surrounded by the base and is sized for receiving a portion of the sensing device and wherein the base engages the portion of the sensing device about the guide opening to maintain the sensing device over the underlying artery.

8. The locator of claim 1 wherein the flexible base includes at least one additional opening spaced from the guide opening and sized for at least partially mating with and at least partially receiving a portion of the sensing device.

9. The locator of claim 1 wherein edges of the flexible base defining the guide opening engage the sensing device on opposite peripheries of the sensing device.

10. The locator of claim 1 wherein the guide includes at least one alignment mark for alignment with the underlying artery.

11. The locator of claim 1 wherein the guide includes aligning means for aligning the sensing device with the locator.

12. The locator of claim 1 wherein the means for coupling includes:

an adhesive on an underside of the flexible base for coupling the flexible base to an anatomy of the patient.

13. A blood pressure sensor locator for defining where a separate blood pressure sensing device should be positioned over an underlying artery of a patient, the locator comprising:

a flexible template including at least one surface shaped for mating with a corresponding shaped surface of the sensing device to align the sensing device with the flexible template; and

means for coupling the flexible template in a selected position proximate the underlying artery so that the sensing device can be separately attached to and detached from the patient without disturbing the position of the flexible template.

14. The locator of claim 13 wherein the flexible template includes at least one opening through the flexible template, wherein said at least one surface defines a perimeter of the opening.

15. The locator of claim 14 wherein the sensing device includes a sensing member for being positioned over the underlying artery and wherein said at least one opening receives the sensing member.

16. The locator of claim 13 wherein the sensing device includes a support surface for supporting the sensing device adjacent an anatomy of the patient and wherein the flexible template includes an opening sized for receiving the supporting surface.

17. The locator of claim 14 wherein the locator further includes a transparent thin film across the opening.

18. The locator of claim 17 wherein the transparent thin film includes at least one alignment mark for aligning the opening over the underlying artery.

19. The locator of claim 18 wherein the alignment mark comprises a pair of cross hairs.

20. The locator of claim 13 wherein the flexible template includes at least one alignment mark for aligning the template with the underlying artery.

21. The locator of claim 13 wherein the flexible template includes:

means for aligning the sensing device with the flexible template.

22. The locator of claim 21 wherein the means for aligning includes:

a plurality of spaced windows sized for receiving spaced portions of the sensing device.

23. A blood pressure sensor locating template for locating a sensing surface of a blood pressure sensing device over an underlying artery, the sensing device being separable from the locating template and being capable of attachment to a patient, the locating template comprising:

a flexible base having a first opening extending through the base, wherein the first opening is configured for receiving the sensing surface of the sensing device so that the flexible base at least partially mates with a first portion of the sensing device about the first opening;

at least one alignment indicator for aligning the flexible base relative to the underlying artery; and

means for coupling the flexible base to the patient independent of the sensing device so that the sensing device can be separately attached to and detached from the patient without disturbing positioning of the flexible base.

24. The locating template of claim 23 wherein the flexible base includes a second opening extending through the flexible base and wherein the second opening is spaced from the first opening and is configured for at least partially receiving a second portion of the sensing device so that the base at least partially mates simultaneously with the first and second portions of the sensing device.

25. A method for locating a blood pressure sensor over an underlying artery of a patient, the method comprising:

identifying a location on the patient above the underlying artery;

attaching a flexible sensor locator to the patient adjacent the identified location in a preselected aligned relationship with the location;

positioning the blood pressure sensor over the underlying artery in a preselected aligned relationship with the locator; and

attaching the blood pressure sensor to the patient without attachment to the flexible sensor locator so that the blood pressure sensor can be removed without disturbing positioning of the flexible sensor locator.