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An impact head for a chiropractic adjustment tool or tapper that is easy to install, remains stable during lateral movements and easily exchangeable. The impact head comprises a central bore having a bore diameter disposed in the impact head at the attachment end, an annular slot concentrically disp

An impact head for a chiropractic adjustment tool or tapper that is easy to install, remains stable during lateral movements and easily exchangeable. The impact head comprises 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. The impact head is then attached to a reciprocating rod having a rod center bore and an annular reciprocating rod insert end wherein the reciprocating rod attaches 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.

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I claim: 1. An impact head assembly for a percussive therapeutic device, comprising: an elastic impact head having a contact end opposite an attachment end; an elastic impact head central bore having a bore diameter disposed in said elastic impact head at said attachment end and extending toward sa

I claim: 1. An impact head assembly for a percussive therapeutic device, comprising: an elastic impact head having a contact end opposite an attachment end; an elastic impact head central bore having a bore diameter disposed in said elastic impact head at said attachment end and extending toward said contact end having an elastic impact head central bore base as a farthest extension of said elastic impact head central bore; an annular slot concentrically disposed and parallel to said elastic impact head central bore extending into said elastic impact head from said attachment end of said elastic impact head; a central insert having an insert diameter insertable into said elastic impact head central bore of said elastic impact head; and a reciprocating rod insertable into said annular slot concentrically disposed and parallel to said elastic impact head central bore, whereby the elastic nature of the said elastic impact head adheres to the said reciprocating rod as it reciprocates. 2. An Impact head assembly for a percussive therapeutic device of claim 1 wherein said contact end of said elastic impact head is flat. 3. An impact head assembly for a percussive therapeutic device of claim 1 wherein said contact end of said elastic impact head is round. 4. An impact head assembly for a percussive therapeutic device of claim 1 wherein said contact end of said elastic impact head is cone-shaped. 5. An impact head assembly for a percussive therapeutic device of claim 1 wherein said elastic impact head is made of silicone rubber. 6. An impact head assembly for a percussive therapeutic device of claim 1 wherein said elastic impact head is made of plastic. 7. An impact head assembly for a percussive therapeutic device of claim 1 wherein said central insert is threaded or ribbed. 8. An impact head assembly for a percussive therapeutic device of claim 1 wherein said central insert is made of rigid plastic. 9. An impact head assembly for a percussive therapeutic device of claim 1 wherein said central insert is made of semi-rigid plastic.