POWER DRIVEN SURGICAL TOOL

• US 20180078298A1
• Filed: 09/20/2016
• Published: 03/22/2018
• Est. Priority Date: 09/20/2016
• Status: Active Grant

• Current Assignee: OsteoMed, LLC (Berkshire Hathaway Incorporated)
• Original Assignee: OsteoMed, LLC (Berkshire Hathaway Incorporated)
• Inventors: Gonzalez, Mario, Mickelson, Eric, Davison, Dan, Prisco, Gregg
• Granted Patent: US 10,492,801 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/1622 Drill handpieces A61B17/1626, A61B17/1628 take precedence
• CPC Class Codes: A61B 2017/00424 ergonomic, e.g. fitting in fist
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2090/066 for measuring torque

Abstract

A power-driven surgical tool that includes an elongated housing having a fin member aligned substantially parallel with the longitudinal axis of such elongated housing. The tool is power-driven and enables the attachment of either a drill bit or a screwdriver bit. The configuration is such as to provide maximum comfort and a visualization of the target area for the surgeon.

Claims

1. A surgical tool comprising:

a pencil-grip elongated housing having a proximal end and a distal end, said housing having a fin member disposed proximate the distal end of the housing positioned substantially co-planer with a longitudinal axis of the housing;

a removable battery source;

a motor positioned in the housing and configured to receive electrical power from the battery source; and

a drive head positioned at the distal end of the tool, the drive head configured to be rotated by the motor so as to enable rotation of an attachment piece,

wherein the housing enables a surgeon to hold the tool in a pencil-grip manner with the fin stabilizing the housing during operation, and wherein one or more components of the surgical tool are disposed in the drive head such that the center of gravity of the tool is located proximal to the fin so that the center of gravity of the tool is configured to rest on a user'"'"'s hand while the surgical tool is in use.

2. The surgical tool according to claim 1, further comprising:

a sensor that samples draw by the motor during operation of the motor; and

a controller that receives a signal from the sensor indicative of the draw by the motor and uses such signals to determine a plurality of values with a torque applied to the bit that engages a screw when inserting the screw so as to provide torque-limiting capability.

3. The surgical tool according to claim 2, further comprising:

a housing supporting a battery and removably connectable with said elongated housing, said battery housing having engaging means for attachment of said battery housing to the elongated housing and displaceable connector pins for engaging said controller to provide power.

4. The surgical tool according to claim 3, wherein said elongated housing includes interlocking rails and said battery housing includes complementary interlocking rails for slidable engagement with the interlocking rails of said elongated housing so as to engage and lock said battery housing to said elongated housing.

5. The surgical tool according to claim 3, wherein the battery is made of lithium.

6. The surgical tool according to claim 3, wherein the battery is disposable.

7. The surgical tool according to claim 3, wherein the battery is made of nickel cadmium.

8. The surgical tool according to claim 3, wherein the battery housing is configured to be disposed on the proximal end of the elongated housing.

9. The surgical tool according to claim 2, further comprising:

a switch to disengage the controller, thereby permitting the operation of the surgical tool without torque-limiting capability.

10. The surgical tool according to claim 1 wherein the attachment piece is a bit to drive a screw, and wherein the tool is configured to stop rotation of the screw in response to a torque-limiting condition being satisfied.

11. The surgical tool according to claim 10, wherein the torque applied to the drive head is no more than about 30 inch-ounces.

12. The surgical tool according to claim 11, wherein the torque applied to the drive head is no more than about 20 inch-ounces.

13. The surgical tool according to claim 12, wherein the torque applied to the drive head is no more than about 10 inch-ounces.

14. The surgical tool according to claim 1, wherein the rotational speed of the drive head is reduced to less than or equal to 4,000 rpm.

15. The surgical tool according to claim 1, wherein the rotational speed of the drive head is reduced to less than or equal to 1,000 rpm.

16. The surgical tool according to claim 1, wherein the rotational speed of the drive head is no more than about 1,000 rpm.

17. A surgical tool comprising:

a pencil-grip elongated housing having a proximal end and a distal end, said housing having a fin disposed proximate the distal end of the housing positioned substantially co-planer with a longitudinal axis of the housing;

a motor positioned in the housing and configured to receive electrical power from a power source;

a drive head positioned at the distal end of the tool, the drive head configured to receive either a drill bit or a bit that engages a screw, and to be rotated by the motor so as to enable rotation of the drill bit or the screw into a bone

a sensor that monitors the motor during operation; and

a controller that receives one or more signals from the sensor and uses such signals to determine a plurality of values with a torque applied to the bit that engages a screw when inserting the screw so as to provide torque-limiting capability,

wherein the housing enables a surgeon to hold the tool in a pencil-grip with the fin stabilizing the housing during operation, and wherein the center of gravity of the tool is proximal the fin so that the center of gravity of the tool is generally proximal the base of the surgeon'"'"'s index finger and thumb.

18. The surgical tool according to claim 17, further comprising:

a power source having a battery housing removably connectable with said elongated housing, said battery housing having displaceable connector pins for engaging said controller.

19. The surgical tool according to claim 18, wherein the battery housing supports a battery to generate the electrical power, said battery in communication with said displaceable connector pins.

20. The surgical tool according to claim 19, wherein the battery is made of lithium.

21. The surgical tool according to claim 19, wherein the battery is disposable.

22. The surgical tool according to claim 19, wherein the said battery is rechargeable.

23. The surgical tool according to claim 22, wherein the rechargeable battery is made of nickel cadmium.

24. The surgical tool according to claim 18, wherein the battery housing is configured to be disposed on the proximal end of the elongated housing.

25. The surgical tool according to claim 17, further comprising:

a switch to disengage the controller, thereby permitting the operation of the surgical tool without torque-limiting capability.

26. The surgical tool according to claim 17, wherein the drive head is configured to receive a bit that engages a screw, and wherein the tool is configured to stop rotation of the screw in response to a torque-limiting condition being satisfied.

27. The surgical tool according to claim 26, wherein the torque applied to the drive head is no more than about 30 inch-ounces.

28. The surgical tool according to claim 27, wherein the torque applied to the drive head is no more than about 20 inch-ounces.

29. The surgical tool according to claim 28, wherein the torque applied to the drive head is no more than about 10 inch-ounces.

30. The surgical tool according to claim 17, wherein the rotational speed of the drive head is reduced to less than or equal to 4,000 rpm.

21-1. The surgical tool according to claim 17, wherein the rotational speed of the drive head is reduced to less than or equal to 1,000 rpm.

32. The surgical tool according to claim 17, wherein the rotational speed of the drive head is no more than about 1,000 rpm.

33. The surgical tool according to claim 17, further comprising:

a housing supporting a battery and removably connectable with said elongated housing, said battery housing having engaging means for attachment of said battery housing to the elongated housing and displaceable connector pins for engaging said controller to provide power.

34. The surgical tool according to claim 33, wherein said elongated housing includes interlocking rails and said battery housing includes complementary interlocking rails for slidable engagement with the interlocking rails of said elongated housing so as to engage and lock said battery housing to said elongated housing.

35. A removable power source comprising:

a housing;

a battery supported within said housing;

said housing having interlocking rails for slidable engagement and locking of said battery housing to a workpiece and having displaceable connector pins in electrical communication with the battery, said pins being displaceable in a direction substantially parallel with the longitudinal of the battery housing.

36. The power source according to claim 35, wherein the battery is made of lithium.

37. The power source according to claim 35, wherein the battery is disposable.

38. The power source according to claim 35, wherein the battery is rechargeable.

39. The power source according to claim 35, wherein the battery is made of nickel cadmium.

40. The power source according to claim 35, wherein said housing engages a surgical tool comprising:

a pencil-grip elongated housing having a proximal end and a distal end, said housing having a fin member disposed proximate the distal end of the housing positioned substantially co-planer with a longitudinal axis of the housing;

a motor positioned in the housing and configured to receive electrical power from the battery; and

a drive head positioned at the distal end of the tool, the drive head configured to be rotated by the motor so as to enable rotation of an attachment piece,

wherein the housing enables a surgeon to hold the tool in a pencil-grip manner with the fin stabilizing the housing during operation, and wherein one or more components of the surgical tool are disposed in the drive head such that the center of gravity of the tool is located proximal to the fin so that the center of gravity of the tool is configured to rest on a user'"'"'s hand while the surgical tool is in use.