Impact head assembly for percussive therapeutic device

• US 20050113870A1
• Filed: 11/21/2003
• Published: 05/26/2005
• Est. Priority Date: 11/21/2003
• Status: Active Grant

• Current Assignee: Edward W. Miller
• Original Assignee: Edward W. Miller
• Inventors: Miller, Edward W.
• Granted Patent: US 7,503,923 B2
• Time in Patent Office: Days
• US Class Current: 606/237
• CPC Class Codes: A61H 1/008 Apparatus for applying pressure or blows almost perpendicular to the body or limb axis, e.g. chiropractic devices for repositioning vertebrae, correcting deformation
• CPC Class Codes: A61H 2201/1685 interchangeable modular devices, A61H2201/0107

Abstract

An impact head for a chiropractic adjustment tool or taper comprising an impact head with a central bore having a bore diameter disposed in the impact head at the attachment end, an annular slot concentrically disposed and parallel to the impact head central bore extending into the impact head from the attachment end of the impact head, a reciprocating rod having a rod center bore and an annular reciprocating rod insert end wherein the reciprocating rod attaches to the impact head by inserting the reciprocating rod insert end into the annular slot of the impact head and in a central insert having an insert diameter inserted into the impact head central.

Claims

1. An impact head assembly, comprising:

an impact head having a contact end opposite an attachment end;

an impact head central bore having a bore diameter disposed in said impact head at said attachment end and extending toward said contact end having an impact head central bore base as a farthest extension of said impact head central bore; and

an annular slot concentrically disposed and parallel to said impact head central bore extending into said impact head from said attachment end of said impact head;

2. The impact head assembly of claim 1, further comprising a central insert having an insert diameter inserted into said impact head central bore of said impact head.

3. The impact head assembly of claim 1 wherein said contact end of said impact head is flat.

4. The impact head assembly of claim 1 wherein said contact end of said impact head is round.

5. The impact head assembly of claim 1 wherein said contact end of said impact head is cone-shaped.

6. The impact head assembly of claim 1 wherein said impact head is made of silicone rubber.

7. The impact head assembly of claim 1 wherein said impact head is made of plastic.

8. The impact head assembly of claim 2 wherein said central insert is threaded or ribbed.

9. The impact head assembly of claim 2 wherein said central insert is made of rigid plastic.

10. The impact head assembly of claim 2 wherein said central insert is made of semi-rigid plastic.

11. A method of attaching an impact head to a reciprocating rod comprising the steps of:

inserting an annular reciprocating rod insert end of a reciprocating rod into an annular slot concentric to an impact head central bore in an impact head;

pressing said reciprocating rod into said impact head until said reciprocating rod insert end is fully seated in said annular slot; and

inserting a central insert into said impact head central bore of said impact head;

11-1. The method of attaching an impact head to a reciprocating rod in accordance with claim 12 further comprising the step of twisting said reciprocating rod while pressing said reciprocating rod into said impact head.