System and method for using micro-electro-mechanical systems (MEMS) to heal wounds

• US 8,439,882 B2
• Filed: 09/22/2009
• Issued: 05/14/2013
• Est. Priority Date: 10/03/2008
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Kelch, Randall P.
• Primary Examiner(s): HAND, MELANIE JO
• Application Number:
  US12/564,120
• Publication Number:
  US 20100087791A1
• Time in Patent Office: 1,330 Days
• Field of Search: 604/304, 604/313, 604/319, 604/361, 435/6.17, 435/7, 435/4, 435/335
• US Class Current: 604/313
• CPC Class Codes: A61M 1/73 comprising sensors or indicators for physical values
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 1/95 with sensors for exudate composition
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 2205/3324 PH measuring means
• CPC Class Codes: A61M 2205/3331 Pressure; Flow

Abstract

A system and method for treating a tissue site of a patient may include sensing one or more characteristics of exudate fluid of a tissue site of a patient. A level of the sensed one or more characteristics of the exudate fluid may be measured, and, in response to the measured at least one characteristic level, treatment may be applied or altered to the tissue site.

Claims

1. A reduced pressure delivery system for treating a tissue site of a patient, comprising:

electromechanical components configured to apply a treatment to the tissue site of the patient;

a processing unit in communication with said electromechanical components and configured to cause said electromechanical components to activate to apply or alter the treatment to the tissue site;

at least one conduit configured to deliver the treatment to the tissue site; and

a micro-electro-mechanical system (MEMS) device including an integration of its components on a common substrate, and configured to sense one or more characteristics of exudate fluid from the tissue site, and further configured to communicate data indicative of the sensed one or more exudate fluid characteristics, said processing unit configured to receive the data from said MEMS device and cause said electromechanical components to apply the treatment to the tissue site of the patient via said at least one conduit.

2. The reduced pressure delivery system according to claim 1, wherein said electromechanical components include at least one valve and at least one pump, the at least one pump configured to apply reduced pressure to the tissue site and the at least one valve configured to enable and disable the reduced pressure to be applied or altered to the tissue site.

3. The reduced pressure delivery system according to claim 2, wherein the at least one pump is further configured to deliver or alter treatment fluid to the tissue site and the at least one valve is configured to enable and disable the treatment fluid to be applied or altered to the tissue site.

4. The reduced pressure delivery system according to claim 1, wherein said MEMS device is wirelessly in communication with said processing unit.

5. The reduced pressure delivery system according to claim 1, wherein said MEMS device is configured to sense a pH level of the exudate fluid.

6. The reduced pressure delivery system according to claim 1, further comprising a dressing in fluid communication with said at least one conduit, and wherein said MEMS device is disposed within said dressing when sensing the one or more characteristics of the exudate fluid of the tissue site.

7. The reduced pressure delivery system according to claim 1, wherein the treatment includes at least one treatment fluid.

8. The reduced pressure delivery system according to claim 1, further comprising an electronic display in communication with said processing unit, said processing unit further configured to generate and display a graphical user interface (GUI) on said electronic display, the GUI including an indicia representative of a characteristic level of the exudate fluid from the tissue site.

9. The reduced pressure delivery system according to claim 1, further comprising an electronic display in communication with said processing unit, said processing unit further configured to generate and display a graphical user interface (GUI) on said electronic display, the GUI including an indicia representative of a characteristic level of the exudate fluid from the tissue site, wherein the one or more characteristics of the exudate fluid include a chemical characteristic, and wherein the indicia representative of a characteristic level of the exudate fluid is representative of a chemical characteristic level.

10. The reduced pressure delivery system according to claim 1, further comprising an electronic display in communication with said processing unit, said processing unit further configured to generate and display a graphical user interface (GUI) on said electronic display, the GUI including an indicia representative of a characteristic level of the exudate fluid from the tissue site, wherein the one or more characteristics of the exudate fluid include a biological marker, and wherein the indicia representative of a characteristic level of the exudate fluid is representative of a biological marker characteristic level.

12. The reduced pressure delivery system according to claim 1, wherein said MEMS device is configured to sample multiple characteristics of at least the exudate fluid and environmental conditions at the tissue site.

13. The reduced pressure delivery system according to claim 12, wherein said processing unit is configured to receive data representative of the multiple characteristics of at least the exudate fluid and environmental conditions at the tissue site, and, in response, determining how to apply or alter the delivery signal to said actuating device.

11. A reduced pressure therapy system for drawing exudate fluid from tissue of a patient and treating the tissue, said reduced pressure therapy system comprising:

a dressing in fluid communication with the tissue for delivering a vacuum and the treatment fluid to the tissue;

at least one conduit having one end in fluid communication with said dressing for delivering the vacuum and the treatment fluid thereto;

an actuating device connected to the other end of said at least one conduit for providing the vacuum thereto in a first state and the treatment fluid thereto in a second state in response to a delivery signal;

a processing unit in electrical communication with said actuating device to cause the vacuum to be applied or altered during the first state and a delivery signal to be applied or altered to said actuating device during the second state in response to a predetermined therapy for treating the tissue; and

a MEMS device including an integration of its components on a common substrate, and in fluid communication with the tissue to sense characteristics of the exudate fluid and to generate characteristic data related to the characteristics of the exudate fluid, and in electrical communication with said processing device for transmitting the characteristic data thereto, said processing device applying or altering the delivery signal to said actuating device in response to an analysis of the characteristic data according to the predetermined therapy.

14. The reduced pressure therapy system according to claim 11, wherein said MEMS device is configured to sample multiple characteristics of at least the exudate fluid and environmental conditions at the tissue site.

15. The reduced pressure delivery system according to claim 14, wherein said processing unit is configured to receive data representative of the multiple characteristics of at least the exudate fluid and environmental conditions at the tissue site, and, in response, determining how to apply or alter the delivery signal to said actuating device.