Algesimeter with detachable pin wheel

• US 5,474,084 A
• Filed: 03/15/1994
• Issued: 12/12/1995
• Est. Priority Date: 03/15/1994
• Status: Expired due to Fees

• Current Assignee: Joseph G. Cunniff
• Original Assignee: Joseph G. Cunniff
• Inventors: Cunniff, Joseph G.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US08/213,428
• Time in Patent Office: 637 Days
• Field of Search: 128/744, 128/740, 128/774, 601/128, 601/129, 606/181
• 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

An algesimeter which includes a pin wheel that is disposable and easily attachable/detachable to a handle structure. The algesimeter includes a handle, a pair of pivotable arm members extending from the handle, and a pin wheel releasably held between the pair of pivotable arm members. A release mechanism is provided within the handle for pivoting the arm members between an open and closed position, wherein the pin wheel is rotatably held by the pair of arm members in the closed position and released from the pair of arm members in the open position. A pin wheel can be attached and/or released from the handle without being directly contacted by the user.

Claims

1. A device for testing the pain sensitivity of the skin of a patient which comprises:

a handle;

a pair of pivotable arm members extending from said handle;

a pin wheel releasably held between said pair of pivotable arm members; and

a release mechanism within said handle for pivoting said arm members between an open and closed position, wherein said pin wheel is rotatably held by said pair of arm members in said closed position and released from said pair of arm members in said open position.

2. A device for testing the pain sensitivity of the skin of a patient according to claim 1, wherein said arm members include opposed axial portions which are received in said pin wheel to rotatable hold said pin wheel.

3. A device for testing the pain sensitivity of the skin of a patient according to claim 2 wherein said pin wheel includes a central hub having a through-bore therein which through-bore receives said opposed axial portions of said arm members.

4. A device for testing the pain sensitivity of the skin of a patient according to claim 1, wherein the release mechanism includes a pin wheel release lever which extends through a slot formed in said handle, and movement of said pin wheel release lever causes said pair of pivotable arm members to move between said open positions.

5. A device for testing the pain sensitivity of the skin of a patient according to claim 4, wherein said release mechanism includes a spring member which biases said pair of pivotable arm members in said closed position.

6. A device for testing the pain sensitivity of the skin of a patient according to claim 4, wherein said release mechanism includes a sliding member which includes a cam projection which cooperates with opposed cam surface provided on said pair of pivotal arm members.

7. A device for testing the pain sensitivity of the skin of a patient according to claim 6, wherein said release mechanism includes a spring member which biases said sliding member so that said pair of pivotable arm members is normally held in said closed position.

8. A device for testing the pain sensitivity of the skin of a patient according to claim 1, wherein said pin wheel includes a wheel and a plurality of pins which extend outwardly from a peripheral surface of said wheel.

9. A device for testing the pain sensitivity of the skin of a patient according to claim 8, wherein said pins and said wheel are integral.

10. A device for testing the pain sensitivity of the skin of a patient according to claim 9, wherein said pins and said wheel are made from a plastic.

11. A device for testing the pain sensitivity of the skin of a patient according to claim 9, wherein said pins and said wheel are made from a sterilizable material.

12. A device for testing the pain sensitivity of the skin of a patient according to claim 1, in combination with a plurality of pin wheels, wherein each of said plurality of pin wheels are disposable and held in a container so that they can be received by said pivotable arm members and removed from said container without being directly contacted by an operator of the device.

13. A device for testing the pain sensitivity of the skin of a patient according to claim 12, wherein each of said plurality of pin wheels includes a central hub which has opposite ends which are received in supporting slots in said container.

14. A device for testing the pain sensitivity of the skin of a patient according to claim 13, in combination with a container having a slot for receiving said pin wheels after use, said slot having a width equal to or greater than a width of said pin wheels and a length equal to or greater than a diameter of said pin wheels.

15. A method of testing the pain sensitivity of the skin of a patient which comprises:

providing a handle having a a pair of pivotable arm members extending from said handle, said pair of pivotable arm members including opposed axial portions, and a release mechanism within said handle for pivoting said arm members between an open and closed position, wherein said pin wheel is rotatably held by said pair of arm members in said closed position and released from said pair of arm members in said open position;

providing at least one pin wheel having a central hub with a through-bore extending through said hub;

moving said pair of pivotable arms into said open position and aligning said opposed axial portions with the through-bore in said pin wheel hub;

moving said pair of arm members into said closed position so that said opposed axial portions are received in said through-bore in said pin wheel hub to rotatably hold said pin wheel; and

rolling said pin wheel across the skin of a patient to test pain sensitivity of the skin of the patient.

16. A method of testing the pain sensitivity of the skin of a patient according to claim 15, wherein said at least one pin wheel is held in a container so as to received by said pivotable arm members and removed from said container without being directly contacted by an operator of the device.

17. A method of testing the pain sensitivity of the skin of a patient according to claim 16, further comprising disposing of said used pin wheel by:

providing a waste container having a slot in an upper surface thereof;

positioning said used pin wheel in said slot; and

moving said pair of arm members into said open position so that said opposed axial portions are removed from said through-bore in said pin wheel hub and said pin wheel drops into said waste container through said slot.