Surgical drain with sensors for monitoring fluid lumen

• US 7,267,671 B2
• Filed: 02/09/2004
• Issued: 09/11/2007
• Est. Priority Date: 02/07/2003
• Status: Expired due to Fees

• Current Assignee: Photosonics Medical, Inc.
• Original Assignee: University of Southern California
• Inventors: Shehada, Ramez Emile Necola
• Primary Examiner(s): Zalukaeva; Tatyana
• Assistant Examiner(s): KAHN, LAURA HILL
• Application Number:
  US10/776,020
• Publication Number:
  US 20040230179A1
• Time in Patent Office: 1,310 Days
• Field of Search: 604540-544, 604317-357, 600/302, 600324-329
• US Class Current: 604/541
• CPC Class Codes: A61B 2562/228 Sensors with optical connectors
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/0071 by measuring fluorescence emission
• CPC Class Codes: A61B 5/0075 by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy A61B5/0071 takes precedence
• CPC Class Codes: A61B 5/0084 for introduction into the body, e.g. by catheters A61B5/1459 takes precedence
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/036 by means introduced into body tracts A61B5/032 and A61B5/035 take precedence
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14503 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors A61B5/1459, A61B5/1464, A61B5/1473, A61B5/1482, A61B5/14865 take precedence
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61B 5/413 Monitoring transplanted tissue or organ, e.g. for possible rejection reactions after a transplant
• CPC Class Codes: A61B 5/42 Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems A61B1/00, A61B5/4857, A61B5/486, A61B5/4866, A61B5/4869 take precedence
• CPC Class Codes: A61B 5/6882 Anchoring means
• CPC Class Codes: A61B 5/6885 Monitoring or controlling sensor contact pressure
• CPC Class Codes: A61M 1/918 for multiple suction locations
• CPC Class Codes: A61M 1/95 with sensors for exudate composition
• CPC Class Codes: A61M 27/002 Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202

Abstract

Devices and methods of using a surgical drain, and more particularly to a surgical drain having at least one sensor for monitoring and/or recording the condition of the anatomical site or fluid emitted from the site where the surgical drain is placed. Modifications may be made to the surgical drain to improve stabilization or immobilization in the proximity of the anatomical site to be monitored.

Claims

1. An implantable surgical drain for draining fluid from and sensing a condition of a surgical wound within a patient'"'"'s body comprising:

an elongated conduit having a drain lumen configured to be implanted within the surgical wound and to rest against but not penetrate the tissue within the surgical wound and a plurality of drain holes spaced along substantially the length of the drain lumen that are configured to drain fluid from the surgical wound; and

at least one sensing element affixed to the elongated conduit and configured to sense a biochemical property of drained fluid within the drain lumen.

2. The surgical drain of claim 1, wherein the elongated conduit is configured to drain blood, puss, bile or intestinal contents.

3. The surgical drain of claim 1, further comprising a plurality of sensing elements configured to sense a plurality of biochemical properties.

4. The surgical drain of claim 1, wherein the biochemical property is selected from the group comprising:

concentration, color, oxygenation, biochemical composition, or drug concentration.

5. The surgical drain of claim 1, further comprising a display in communication with the at least one sensing element, wherein the display is configured to depict data corresponding to the biochemical property sensed by the at least one sensing element.

6. An implantable surgical drain for draining fluid from and sensing a condition of a surgical wound within a patient'"'"'s body comprising:

an elongated conduit having a drain lumen configured to be implanted within the surgical wound and to rest against but not penetrate the tissue within the surgical wound and a plurality of drain holes spaced along substantially the length of the drain lumen that are configured to drain fluid from the surgical wound, the elongated conduit including a first position and a second position located within the drain lumen;

a first transmitting element placed proximate to the first position, configured to deliver energy into the drain lumen; and

a first sensing system placed proximate to the second position, configured to receive the delivered energy after it is modulated by a biochemical property of at least one substance within the lumen.

7. The surgical drain of claim 6, wherein the first transmitting element and first sensing system are embedded within the conduit behind material that is optically transparent.

8. The surgical drain of claim 6, wherein the first position and second position are located on substantially opposite sides of the drain lumen.

9. The surgical drain of claim 6, wherein the lumen includes a third position and a fourth position, further comprising:

a second transmitting element configured to deliver energy to the lumen proximate to the third position; and

a second sensing system configured to receive energy proximate to the lumen fourth position.

10. The surgical drain of claim 9, further comprising a processing system in communication with the first and second sensing systems configured to compare a difference between the energy detected by the first and second sensing systems.

11. The surgical drain of claim 9, further comprising a third sensing system configured to sense a different biochemical property than the first sensing system.

12. The surgical drain of claim 11, wherein the biochemical property is selected from the group comprising:

concentration, color, oxygenation, pH, biochemical composition, or drug concentration.

13. The surgical drain of claim 11, further comprising a display in communication with the second sensing system, wherein the display is configured to depict data corresponding to the biochemical property sensed by the second sensing system.

14. A method of draining fluid from and monitoring the condition of a surgical wound within a patient'"'"'s body comprising:

implanting a surgical drain having a drain lumen and a plurality of drain holes spaced along substantially the length of the drain lumen within the surgical wound such that substantially the length of the drain lumen rests against tissue within the surgical wound and oriented so as to drain fluid from the surgical wound to be monitored;

sensing by a first sensing system affixed to the surgical drain of a biochemical property of a substance within the drain lumen over time;

receiving information from the first sensing system regarding the sensed biochemical property within the drain lumen; and

monitoring the information received from the sensing system to evaluate the condition of the tissue over time.

15. The method of claim 14, further comprising transmitting energy within the drain lumen and receiving energy with the first sensing system.

16. The method of claim 14, further including processing the information received from the first sensing system.

17. The method of claim 16, further including displaying information received from the first sensing system.

18. A method of monitoring substances within a surgical wound in a patient'"'"'s body comprising:

implanting a surgical drain having a drain lumen and a plurality of drain holes spaced along substantially the length of the drain lumen so as to rest against a substantial length of tissue within the surgical wound, wherein the plurality of drain holes are spaced along substantially the length of the lumen and are configured to drain fluid from the surgical wound;

sensing by a first and a second sensing system affixed to the drain a biochemical property of at least one substance within the drain lumen over time;

receiving information from the first and second sensing systems regarding the sensed biochemical property within the drain lumen; and

monitoring the information received from the first and second sensing systems to evaluate the condition of the tissue over time.

19. The method of claim 18, further comprising processing information from the first and second sensing systems to compare a difference in information received from the first and second sensing systems.

20. The method of claim 18, further comprising processing information from the first and second sensing systems to compare a difference in information received from the first and second sensing systems proximate to different positions along the drain lumen.