DEBRIDEMENT HAND TOOL

• US 20120101512A1
• Filed: 10/21/2011
• Published: 04/26/2012
• Est. Priority Date: 10/21/2010
• Status: Abandoned Application

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Locke, Christopher Brian, Robinson, Timothy Mark, Mormino, Richard Paul, Barta, Eric Woodson, Kazala, Richard Marvin
• Application Number:
  US13/279,029
• Publication Number:
  US 20120101512A1
• Time in Patent Office: Days
• US Class Current: 606/169
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 17/3213 with detachable blades
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00402 Piezo electric actuators
• CPC Class Codes: A61B 2017/00424 ergonomic, e.g. fitting in fist
• CPC Class Codes: A61B 2017/00429 with a roughened portion
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/00761 Removing layer of skin tissue, e.g. wrinkles, scars or cancerous tissue
• CPC Class Codes: A61B 2090/304 using chemi-luminescent materials
• CPC Class Codes: A61B 2090/309 using white LEDs
• CPC Class Codes: B26B 11/008 comprising electronic or electrical features, e.g. illuminating means, computing devices or sensors
• CPC Class Codes: B26B 7/00 Hand knives with reciprocating motor-driven blades

Abstract

The disclosed embodiments include tools for aiding a user in debriding necrotic tissue. For example, in one embodiment, a debridement tool is disclosed that includes a housing having an interior space. A motor and a power source are disposed within the interior space of the housing. The power source is operable to provide power to the motor. A blade is coupled to a first end of the housing. The blade is operable to vibrate when the motor is powered. The debridement tool further includes a lighting element disposed within the housing and beneath a cutting edge of the blade. The lighting element is operable to illuminate the tissue site. In some embodiments, the lighting element operates at a particular wavelength that assists in distinguishing between necrotic tissue and healthy tissue.

Claims

1. A debridement tool for debriding tissue from a tissue site, the debridement tool comprising:

a housing having an interior space;

a motor disposed within the interior space of the housing;

a power source disposed within the interior space of the housing operable to provide power to the motor;

a blade coupled to a first end of the housing, the blade operable to vibrate when the motor is powered on; and

a lighting element disposed within the housing and beneath a debridement edge of the blade, the lighting element operable to illuminate the tissue site.

2. The debridement tool of claim 1, further comprising a switch for powering the motor on and off.

3. The debridement tool of claim 2, wherein the switch is located at a second end of the housing, the second end being opposite the first end.

4. The debridement tool of claim 1, wherein the power source is a rechargeable power source operable to be recharged while remaining in the housing.

5. The debridement tool of claim 1, wherein the power source is a rechargeable power source operable to be recharged using inductive coupling.

10. The debridement tool of claim 1, wherein the motor is a piezoelectric motor.

11. The debridement tool of claim 1, wherein the motor is an ultrasonic motor.

12. The debridement tool of claim 1, wherein the motor includes an offset mass rotating about an axis causing the blade to vibrate.

13. The debridement tool of claim 12, wherein the axis is angled relative to a debridement plane of the blade such that the rotation of the offset mass generates a first force component substantially parallel to the debridement plane and along the length of the blade, a second force component substantially parallel to the debridement plane and substantially transverse to the length of the blade, and a third force component substantially perpendicular to the debridement plane.

14. The debridement tool of claim 13, further comprising one or more mounts within the housing for reducing the vibration in undesired planes caused by the rotation of the offset mass.

15. The debridement tool of claim 1, wherein the blade is unsharpened.

16. The debridement tool of claim 1, wherein the vibration of the blade assist in debridement of the tissue.

17. The debridement tool of claim 1, wherein the blade is a metal scalpel blade.

19. The debridement tool of claim 1, wherein the blade is an injection molded plastic blade.

20. The debridement tool of claim 1, wherein the blade is an injection molded ceramic blade.

21. The debridement tool of claim 1, wherein the blade vibrates at ultrasonic frequencies.

22. The debridement tool of claim 1, wherein the blade is retractable.

23. The debridement tool of claim 22, further comprising a blade trigger, the blade trigger causing the motor to power off when the blade is retracted, and causing the motor to power on when the blade is extended.

24. The debridement tool of claim 1, wherein the shape of the blade is dependent on the tissue site being treated.

25. The debridement tool of claim 1, wherein the lighting element is operable to identify tissue with blood flow.

26. The debridement tool of claim 1, wherein the lighting element is operable to identify necrotic tissue.

27. The debridement tool of claim 1, wherein the lighting element operates at a specific wavelength for identifying tissue with blood flow.

28. The debridement tool of claim 27, wherein the specific wavelength is at a red to near infra-red region.

29. The debridement tool of claim 1, further comprising electrical circuitry electrically coupled to the motor, the power source, and the lighting element for controlling operations of the debridement tool.

6-9. -9. (canceled)

18. (canceled)

30-68. -68. (canceled)

69. A debridement tool for debriding tissue from a tissue site, the debridement tool comprising:

a housing having an interior space;

a motor disposed within the interior space of the housing, wherein the motor includes an offset mass rotating about an axis for generating vibrations;

a power source disposed within the interior space of the housing operable to provide power to the motor;

a blade coupled to a first end of the housing along a first plane, the motor located a distance and angled within the housing so as to transfer the vibrations along the first plane for vibrating the blade along the first plane for assisting a user in debridement of necrotic tissue; and

a lighting element disposed within the housing beneath a debridement edge of the blade, wherein the lighting element operates at a wavelength operable to assist a user in distinguishing between necrotic tissue and healthy tissue.