Uniform pressure diagnostic pinwheel

• US 5,529,074 A
• Filed: 05/31/1995
• Issued: 06/25/1996
• Est. Priority Date: 02/26/1993
• Status: Expired due to Fees

• Current Assignee: Jon B. Greenfield
• Original Assignee: Jon B. Greenfield
• Inventors: Greenfield, Jon B.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US08/454,957
• Time in Patent Office: 391 Days
• Field of Search: 128/740, 128/744, 128/774
• US Class Current: 600/557
• CPC Class Codes: A61B 5/0057 by applying motion other than vibrations, e.g. rolling, rubbing, applying a torque, tribometry
• CPC Class Codes: A61B 5/4824 Touch or pain perception evaluation A61B5/4821 takes precedence

Abstract

A disposable diagnostic pinwheel for use in testing for nerve dysfunction. The pinwheel can be applied to a handle which incorporates a pressure absorbing mechanism so that a more constant and controllable test can be conducted. The pinwheel can also include a removable cover which protects sharp points on the pinwheel from inadvertently injuring the user. In one embodiment the cover may also function as the grasping means during use of the pinwheel in testing procedures. In such a use the cover also includes the pressure absorbing mechanism.

Claims

1. A device for testing for nerve dysfunction comprising a pinwheel, a grasping means for the pinwheel, and force absorption means whereby

a. the pinwheel comprises a hub, a plurality of spokes extending radially from the perimeter of the hub, and attachment means centrally located in the hub for connecting the pinwheel to the grasping means, i) each spoke having a first end attached to the perimeter of the hub and a second end distal to the hub whereby each second end is configured to create a sensation of discomfort when the second end is pressed against human skin, and ii) an axis through the attachment means being equally spaced from each spoke'"'"'s second end and perpendicular to the spokes;

b. the grasping means holding the attachment means while allowing the pinwheel to freely rotate; and

c. the force absorption means being positioned to dampen forces applied to the pinwheel through the grasping means, whereby the grasping means comprises an axle and the attachment means comprises a hole along the axis of the pinwheel, a slot extending from the hole to the perimeter of the pinwheel, said slot having a narrow portion at its intersection with the hole, said narrow portion being smaller than the diameter of the axle, while allowing the axle to be pushed through the slot and then into the hole to mount the pinwheel on the axle.

2. A device according to claim 1 whereby the grasping means is a handle.

3. A device according to claim 1 whereby the force absorption means comprises a pliable handle.

4. A device according to claim 1 whereby the force absorption means comprises one or more force absorbing members, each force absorbing member being located between the attachment means and the grasping means.

5. A device according to claim 1 such that the grasping means is a handle which comprises a grip, a neck attached to the grip and a bifurcated head mounted on the end of the neck, the grip being configured to fit comfortably in a human hand, and the bifurcated head having two extending arms and being configured to receive and grasp the attachment means between the arms and allow the pinwheel head to rotate freely between the arms.

6. The device of claim 1 further including a cover which removably attaches to the device so that the second end of the spokes are not accessible unless the cover is removed.

7. The device of claim 1 wherein the grasping means is a cover which at least partially surrounds the pinwheel, the attachment means being connected to the cover so that the pinwheel is free to rotate, about the axis through the attachment means and at least the second end of one or more of the spokes is not covered by the cover.

8. A device according to claim 2 whereby the force absorption means comprises one or more force absorbing members, each force absorbing member having a first end fixedly attached to the handle, and a second end proximate to one or more of the hub'"'"'s attachment means.

9. The device of claim 7 further including a closure which cooperates with the cover to totally surround the pinwheel.

10. The device of claim 7 wherein the attachment means is positionable within the cover in either a first or a second location such that the cover fully surrounds the pinwheel when positioned in the first location and the cover only partially surrounds the pinwheel in the second location so that the second end of one or more spokes can be brought in contact with a patient'"'"'s skin.

11. The device of claim 7 wherein the force absorption means is positioned between the cover and the attachment means.

12. The device of claim 9 wherein the cover has an open end allowing access to the second end of at least some of the spokes and the closure is a tape secured over the open end.

13. The device of claim 9 wherein the cover has an open end allowing access to the second end of at least some of the spokes and the closure is a cap which connects to the cover.

14. A pinwheel for testing tactile sensations and a carrier for the pinwheel wherein

a. the pinwheel comprises a hub and spokes radiating from the hub, the hub having an axis through the center thereof and attachment means located along the axis, each spoke having a sharpened end spaced from the hub, the sharpened end capable of creating a sensation of pain when pressed against the skin of a responsive organism, and

b. the carrier comprises a cover which at least partially surrounds the pinwheel, the cover having therein means to hold the pinwheel within the cover until such time as removal from the cover is desired, whereby the means to hold the pinwheel comprises an axle, and the attachment means comprises a hole along the axis of the pinwheel, the pinwheel having a slot extending from the hole to the perimeter of the pinwheel, said slot having a narrow portion at its intersection with the hole, which narrow portion is smaller than the diameter of the axle, such that when the axle is pushed through the slot and then into the hole to mount the pinwheel on the axle the axle remains in the hole until forceably removed.

15. The device of claim 14 wherein the cover includes guiding means for receiving a handle designed to mate with the attachment means.

16. The device of claim 14 wherein the cover includes means to mate with the attachment means such that when the attachment means is mated with the cover the pinwheel is free to rotate about its axis, and each successive spoke second end extends beyond the cover as the pinwheel is rotated.

17. The device of claim 14 further including closure means which cooperates with the cover to completely enclose the pinwheel.