Temperature monitoring and indicator system for a cast saw

Patent metadata

Field	Value
Publication number	US-12157176-B2
Application number	US-202017763903-A
Country	US
Kind code	B2
Filing date	Sep 25, 2020
Priority date	Sep 26, 2019
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A power tool, such as a cast saw is disclosed. The cast saw is equipped with at least one thermocouple and and/or at least one infrared detector that measure the temperature of the cutting blade on the cast saw or the area in the cast immediately surrounding the cutting blade. The cast saw is also equipped with at least one LED that can alert a user of the cast saw when blade or the area in the cast immediately surrounding the blade is approaching or has reached a temperature that may burn a patient. Also disclosed is a shroud for the cutting blade of the cast saw. The shroud not only surrounds at least part of the blade but also houses the thermocouple or infrared detector and the LEDs(s). A method of operating the cast saw to cut a cast off of a patient is also disclosed.

First claim

What is claimed is:

1. A power tool operable by a user, the power tool comprising:
a) a cutting device having a temperature;
b) a data generating module, which is configured to generate data correlative to the temperature of the cutting device;
c) a data collection and processing module which is configured to:
i) collect the data correlative to the temperature of the cutting device, and
ii) process the data correlative to the temperature of the cutting device to determine the temperature of the cutting device;

d) a temperature notification module which is configured to:
i) receive the temperature of the cutting device from the data collection and processing module, and
ii) produce a temperature output that can be detected by the user,
wherein the temperature notification module comprises a first LED, a second LED, and a third LED, and wherein the first LED is turned ON when the temperature of the cutting device from the data collection and processing module is within a first temperature range, the second LED is turned ON when the temperature of the cutting device from the data collection and processing module is within a second temperature range, and the third LED is turned ON when the temperature of the cutting device from the data collection and processing module range is within a third temperature range.

2. The power tool operable by a user according to claim 1 , wherein the cutting device comprises a metal blade.

3. The power tool operable by a user according to claim 1 , wherein the data generating module comprises at least one of an infrared sensor and a thermocouple.

4. The power tool operable by a user according to claim 1 , wherein the data collection and processing module comprises a computer.

5. The power tool operable by a user according to claim 1 , wherein the temperature notification module comprises at least one light emitting diode (LED).

6. The power tool operable by a user according to claim 5 , wherein the at least one LED corresponds to a temperature range.

7. The power tool operable by a user according to claim 5 , wherein the temperature notification module is configured to illuminate the at least one LED in response to the temperature of the cutting device from the data collection and processing module.

8. The power tool operable by a user according to claim 1 , wherein the power tool comprises a cast saw.

9. A power tool operable by a user, the power tool comprising:
a) a cutting device having a temperature, wherein the cutting device comprises a metal blade and a shroud at least partly surrounding the metal blade;
b) a data generating module, which is configured to generate data correlative to the temperature of the cutting device;
c) a data collection and processing module which is configured to:
i) collect the data correlative to the temperature of the cutting device, and
ii) process the data correlative to the temperature of the cutting device to determine the temperature of the cutting device;

d) a temperature notification module which is configured to:
i) receive the temperature of the cutting device from the data collection and processing module, and
ii) produce a temperature output that can be detected by the user.

10. The power tool operable by a user according to claim 9 , wherein the shroud surrounding the metal blade houses the data generating module.

11. The power tool operable by a user according to claim 10 , wherein the data generating module comprises at least one of an infrared detector and a thermocouple.

12. The power tool operable by a user according to claim 9 , wherein the shroud surrounding the metal blade houses the temperature notification module.

13. The power tool operable by a user according to claim 9 , wherein the temperature notification module comprises at least one light emitting diode (LED) and wherein a color of the at least one LED corresponds to a temperature range.

14. The power tool operable by a user according to claim 1 , wherein the first temperature range is lower than the second temperature range and the third temperature range, and the second temperature range is lower than the third temperature range.

15. A shroud for a cutting blade of a power tool, the shroud comprising,
a first housing portion for the cutting blade;
a second housing portion for a data generating module configured to generate data correlative to a temperature of the cutting blade;

a third housing portion for a temperature notification module configured to produce a temperature output that can be sensed by a user of the power tool; and
a data generating module, wherein the data generating module comprises at least one of an infrared detector or a thermocouple,
wherein the third housing portion is configured to hold the at least one of the infrared detector or the thermocouple within non-contacting proximity to and no more than 3 mm away from the cutting blade.

16. The shroud for a cutting blade of a power tool according to claim 15 , wherein the third housing portion is configured to hold the at least one of the infrared detector or the thermocouple within non-contacting proximity to and no more than 2 mm away from the cutting blade.

17. The shroud for a cutting blade of a power tool according to claim 15 , wherein the third housing portion is configured to hold the at least one of the infrared detector or the thermocouple within non-contacting proximity to and no more than 1 mm away from the cutting blade.

18. A method of operating a cast saw to cut a cast off of a patient, the method comprising the steps of:
1) Providing the cast saw wherein the cast saw comprises:
a) a cutting device having a temperature;
b) a data generating module configured to generate data correlative to the temperature of the cutting device;
c) a data collection and processing module which is configured to:
i) collect the data correlative to the temperature of the cutting device, and
ii) process the data correlative to the temperature of the cutting device to determine the temperature of the cutting device;

d) a temperature notification module which is configured to:
i) receive the temperature of the cutting device from the data collection and processing module,
ii) produce a first temperature output corresponding to a safe temperature of the cutting device, and
iii) produce a second temperature output corresponding to an excessive temperature of the cutting device, wherein the first output and the second output can be detected by a user of the cast saw;

e) an ON/OFF switch;

2) Detecting that the temperature notification module is producing the first temperature output and is not producing the second temperature output;
3) Turning the ON/OFF switch to ON and operating the case saw to cut the cast;
4) Turning the ON/OFF switch to OFF when the cast is completely cut.

19. The method according to claim 18 , further comprising the step of:
3a) turning the ON/OFF switch to FF when detecting that the temperature notification module is producing the second temperature output.

20. The method according to claim 19 , further comprising the step of repeating steps 3) and 3a) until the cast is completely cut.

21. The method according to claim 18 , wherein the temperature notification module is further configured to:
iii) produce a third temperature output corresponding to a temperature of the cutting device higher than the safe temperature of the cutting device and lower than the excessive temperature of the cutting device.

Assignees

• Childrens Hospital Philadelphia

Inventors

• Horn Bernard David
• Lawrence John Todd Rutter

Classifications

• B23D45/16

  Hand-held sawing devices with circular saw blades · CPC title

• A61F15/02

  Devices for cutting bandages of any kind, e.g. shears, cast-cutting saws · CPC title

• B27B19/006

  with oscillating saw blades; Hand saws with oscillating saw blades · CPC title

• B23D59/001 Primary

  Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade (measuring in general G01; controlling in general G05) · CPC title

• B25F5/00

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title