Patient interface for reusable optical sensor

• US 9,408,573 B2
• Filed: 08/09/2012
• Issued: 08/09/2016
• Est. Priority Date: 08/11/2011
• Status: Active Grant

• Current Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Original Assignee: Sotera Wireless Incorporated
• Inventors: Welch, Randall, Ellerby, Gwenn, Scott, Peter, Soller, Babs, Rowan, Edward
• Primary Examiner(s): LY, TOAN C
• Application Number:
  US13/570,939
• Publication Number:
  US 20150297137A1
• Time in Patent Office: 1,461 Days
• Field of Search: 235/492
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 2560/0443 Modular apparatus
• CPC Class Codes: A61B 2562/146 for optical coupling
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• CPC Class Codes: A61B 2562/18 Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
• CPC Class Codes: A61B 2562/247 Hygienic covers, i.e. for covering the sensor or apparatus during use
• CPC Class Codes: A61B 5/14535 for measuring haematocrit
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6823 Trunk, e.g., chest, back, abdomen, hip
• CPC Class Codes: A61B 5/6824 Arm or wrist
• CPC Class Codes: A61B 5/6828 Leg
• CPC Class Codes: A61B 5/6831 Straps, bands or harnesses
• CPC Class Codes: A61B 5/6833 Adhesive patches

Abstract

A patient interface for a reusable optical sensor, the patient interface including a compliant element defining a pocket having a lower wall defining an opening therethrough, the pocket being configured to removably receive the reusable optical sensor. The compliant element includes a first wing and a second wing configured for conformal placement on a patient'"'"'s body. A condition of a patient may be monitored by inserting an optical sensor into a patient interface, applying the patient interface to the patient, obtaining a measurement with the optical sensor related to the condition of the patient, removing the patient interface from the patient, and removing the sensor from the patient interface.

Claims

1. A patient interface for a reusable optical sensor, the patient interface comprising:

a compliant element defining a pocket having an upper wall and a lower wall and configured to removably receive the reusable optical sensor, the lower wall of the pocket defining an opening therethrough, the compliant element including a first wing and a second wing configured for conformal placement on a patient'"'"'s body; and

a rigid guide component disposed along at least a portion of an outer surface of the upper wall of the compliant element for guiding the reusable optical sensor into the pocket;

wherein the compliant element comprises a contact surface and the opening extends from inside the pocket through the lower wall to the contact surface.

2. The patient interface of claim 1, wherein the compliant element comprises a material selected from the group consisting of open celled foam, closed cell foam, natural rubber, synthetic rubber, and thermoplastic elastomer.

3. The patient interface of claim 2, wherein the compliant element comprises a moisture impervious surface.

4. The patient interface of claim 1, wherein at least one of the wings defines a ventilation opening therethrough, providing ventilation to the patient'"'"'s skin when in use.

5. The patient interface of claim 1, wherein the compliant element is molded to define a curved shape and is sized and configured to conform to a portion of a patient'"'"'s body selected from the group consisting of a deltoid, an upper arm, a calf, a thigh, a forearm, an upper back, and a lower back.

6. The patient interface of claim 1, wherein the compliant element comprises a nose disposed at an end of the compliant element remote from an open end of the pocket.

7. The patient interface of claim 6, wherein the nose is angled toward the contact surface.

8. The patient interface of claim 6, wherein the nose has a tapered profile.

9. The patient interface of claim 1, further comprising at least one upper wall protrusion to bias an optical sensor disposed in the pocket toward the lower wall of the pocket.

10. The patient interface of claim 1, further comprising at least one lower wall protrusion proximate an entrance of the pocket to facilitate retention of the optical sensor in the pocket.

11. The patient interface of claim 1, further comprising an adhesive layer disposed on at least a portion of the contact surface of the compliant element.

12. The patient interface of claim 11, wherein the adhesive layer comprises a transfer adhesive.

13. The patient interface of claim 11, further comprising a removable liner proximate the adhesive layer.

14. The patient interface of claim 13, wherein the removable liner is optically transparent.

15. The patient interface of claim 1, further comprising an optically clear window layer aligned with the lower wall opening.

16. The patient interface of claim 15, wherein the optically clear window layer further comprises an adhesive surface along at least a portion thereof.

17. The patient interface of claim 15, wherein the optically clear window layer comprises an optical tape.

18. The patient interface of claim 1 wherein the pocket is sized to receive the sensor with a sliding interference fit.

19. The patient interface of claim 1, wherein the rigid component comprises a material selected from the group consisting of a plastic, a metal, and a composite material.

20. The patient interface of claim 1, wherein the compliant element comprises fabric.

21. The patient interface of claim 20, further comprising a first strap attached to one of the two wings, the first strap being configured for encircling a portion of a patient'"'"'s body.

22. The patient interface of claim 21, further comprising a fastener attached to another of the two wings, adapted to receive and secure the first strap.

23. The patient interface of claim 22, wherein a second strap is attached to the other of the two wings and the fastener is attached the second strap.

24. The patient interface of claim 21, wherein the first strap comprises a hook-and-loop fastener.

25. The patient interface of claim 20, wherein the lower wall of the pocket comprises a nonslip material.

26. A method of monitoring a condition of a patient, the method comprising the steps of:

in a patient interface, the patient interface comprising;

a compliant element defining a pocket having an upper wall and a lower wall and configured to removably receive the reusable optical sensor, the lower wall of the pocket defining an opening therethrough, the compliant element including a first wing and a second wing configured for conformal placement on a patient'"'"'s body; and

a rigid guide component disposed along at least a portion of an outer surface of the upper wall of the compliant element for guiding the reusable optical sensor into the pocket;

wherein the compliant element comprises a contact surface and the opening extends from inside the pocket through the lower wall to the contact surface;

inserting an optical sensor into the patient interface;

performing a sensor check of the optical sensor while a transparent liner is in place on an adhesive layer;

removing the transparent liner from the adhesive layer;

applying the patient interface to the patient, wherein the optical sensor is held directly against the adhesive layer;

obtaining a measurement with the optical sensor related to the condition of the patient;

removing the patient interface from the patient; and

removing the sensor from the patient interface.

27. The method of claim 26, further comprising disposing of the patient interface and reusing the optical sensor in a new patient interface to obtain an additional measurement.