PREVENTION & TREATMENT OF NEUROPATHY

• US 20150351957A1
• Filed: 01/27/2014
• Published: 12/10/2015
• Est. Priority Date: 02/01/2013
• Status: Abandoned Application

• Current Assignee: National University of Singapore
• Original Assignee: National University of Singapore
• Inventors: Wilder-Smith, Einar, Shen, Kaiquan
• Application Number:
  US14/761,239
• Publication Number:
  US 20150351957A1
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/0261 using optical means, e.g. infrared light
• CPC Class Codes: A61F 2007/0034 Lower arm
• CPC Class Codes: A61F 2007/0036 Hand
• CPC Class Codes: A61F 2007/0039 Leg or parts thereof
• CPC Class Codes: A61F 2007/0043 Lower leg, calf
• CPC Class Codes: A61F 2007/0045 Foot
• CPC Class Codes: A61F 2007/0056 for cooling
• CPC Class Codes: A61F 2007/0095 with a temperature indicator
• CPC Class Codes: A61F 7/10 Cooling bags, e.g. ice-bags

Abstract

The invention relates to the use of hypothermia to prevent or treat peripheral nerve neuropathy and including a system to induce optimized cooling of one or more body parts, typically the limbs.

Claims

1. A device for inducing regulated controlled hypothermia in a subject comprising:

a body part covering comprising flexible material adapted to contact the skin of a subject and having an upper and lower surface defining a space for coolant, the device provided with one or more inlets for fluid coolant connecting to a closed network of channels to facilitate even distribution of fluid within the device space and describing a coolant dispersal pattern when in use to provide uniform cooling to the subjects body part and wherein the device is further provided with one or more temperature sensors and one or more blood flow sensors to monitor the subjects body part temperature and/or the blood flow through the subjects body part.

2. The device according to claim 1, wherein the device is adapted to cover at least partially the upper limb[s] of the subject and/or cover at least partially the lower limb[s] of the subject.

3. The device according to claim 2 wherein said device is adapted to cover at least the hands and forearm of the subject.

5. The device of claim 1, wherein said device is provided with:

at least one temperature sensor and at least one blood flow sensor in functional contact with the hand, forearm and/or lower limb of the subject;

or

a plurality of temperature sensors and a plurality of blood flow sensors in functional contact with the hand, forearm and/or lower limb at the subject.

7. The device according to claim 1, wherein said device is provided with multiple inlets.

8. The device of claim 1, wherein the channels are formed from a plurality of upwardly projecting fins which are positioned near to each other with the cavity of the body part covering to create a network of channels throughout the body part covering.

9. The device according to claim 8 wherein the fins are positioned equidistant from each other within the cavity of the body part covering.

10. The device of claim 1, wherein said body covering is provided with more than one sensor functionally linked in series to provide continuous temperature and/or blood flow monitoring of said subject over all or part of the subjects body part and adjusting the cooling means to control the induced hypothermia.

11. The device of claim 1, wherein said device further comprises a plurality of micro temperature probes adapted to measure the skin temperature of the subject'"'"'s body part when in use and wherein the micro temperature probes are positioned to provide a measure of the skin temperature over the area of the patient'"'"'s body contacted by the device.

12. The device of claim 1, wherein said flexible material manufactured from a material transparent to light or is optically clear.

14. The device of claim 1, wherein said blood flow sensor[s] detect the concentration of haemoglobin and/or the oxygenation of haemoglobin.

16. An apparatus for inducing and regulating controlled hypothermia in a subject to prevent or treat peripheral nerve neuropathy, comprising:

the device of claim 1, wherein the device is functionally connected to a temperature and/or blood flow monitor and/or oxygenation monitor to monitor temperature and/or blood flow and/or oxygenation in the subject'"'"'s body part via the temperature and/or blood flow sensors;

a cooling means which when is use delivers coolant to the body covering which induces hypothermia in the subject and is regulated when in use to provide optimal cooling to the subject; and

optionally a photoacoustic microscopy system for the monitoring of blood flow.

18. A method to monitor nerve temperature during chemotherapy induced hypothermia in a subject, comprising:

i) providing the device of claim 1, wherein the device includes a plurality of micro temperature probes and connecting the device to said subject; and

ii) monitoring the skin temperature of the subject during induced hypothermia.

19. A method for continuous monitoring of blood flow and/or blood oxygenation through a subject'"'"'s body part during induced hypothermia and chemotherapy, comprising:

i) applying the device of claim 1 to a subject in need of chemotherapy, wherein the device is manufactured from transparent material;

ii) exposing the device to a light source; and

iii) measuring the flow of blood and/or oxygenation through and of the body part.

22. The method according to claim 19 wherein the concentration of haemoglobin is monitored as a measure of blood flow and/or wherein the oxygenation of haemoglobin is monitored as a measure of blood flow.

27. A method to prevent or treat peripheral nerve neuropathy during chemotherapy, comprising:

i) connecting the device of claim 1 to a subject administered or about to be administered a chemotherapeutic agent;

ii) cooling the subject to induce hypothermia in one or more parts of the subject'"'"'s body; and

iii) monitoring and controlling the temperature of the subject to maintain induced hypothermia.

28. The method according to claim 27 wherein the temperature of the subject'"'"'s body part is reduced to between 15°

C. and 25°

C.

31. The method according to claim 27, wherein the induced hypothermia is maintained:

for a period after administration of chemotherapy;

for a period before administration of chemotherapy;

for a period of 3 hours after administration of chemotherapy;

throughout the administration of chemotherapy;

for a period of about 30 minutes after administration of chemotherapy;

for a period of about 30 minutes before administration of chemotherapy;

for a period up to 3 hours after administration of chemotherapy;

or

for a period up to 3 hours before administration of chemotherapy.

37. The method of claim 27, wherein said subject is human.

38. The method of claim 27, wherein the peripheral nerve neuropathy is:

chemotherapy induced neuropathy as a result of cancer treatment;

or

infection induced.

39. The method according to claim 38 wherein said cancer treatment is breast cancer treatment.

40. The method of claim 38, wherein the chemotherapy induced neuropathy is the result of administration of a chemotherapeutic agent selected from the group consisting of:

vincristine, vinca alkaloids, platinum compounds such as cisplatin, oxaliplatin, carboplatin, taxanes, epothilones, bortezomib and thalidomide.

42. The method according to claim 38, wherein said infection is an HIV infection.

43. The method according to claim 42 wherein peripheral neuropathy as a consequence of HIV infection is due to direct viral infection.

44. The method according to claim 42, wherein peripheral neuropathy as a consequence of HIV infection is as a consequence of administration of anti-viral chemotherapy.

45. The method of claim 27, wherein peripheral nerve neuropathy is associated with an inflammatory neural disease.

48. The method of claim 27, wherein peripheral nerve neuropathy is associated with an endocrine or metabolic disease.

50. The method of claim 27, wherein:

chemotherapy treatment is administered before, during or after induction of hypothermia;

said subject is precooled prior to administration of a chemotherapeutic agent; and

/or

induced hypothermia is combined with the administration of neuroprotective agents.

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