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Injection tool and method of its use

  • US 5,827,236 A
  • Filed: 03/13/1995
  • Issued: 10/27/1998
  • Est. Priority Date: 11/10/1992
  • Status: Expired due to Term
First Claim
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1. An injection tool comprising:

  • an injection device comprising an engagement device, an injection barrel having a distal ends and an injection needle mounted at said distal end;

    a piercing hollow needle having a connector portion with a corresponding engagement device for connecting said piercing hollow needle to said injection device and a needle portion that allows said injection needle to be inserted therethrough almost tightly, wherein, upon connecting said connector portion of said piercing hollow needle to said injection device, said engagement device engages with said corresponding engagement device to provide a non-rotating reciprocal relationship therebetween such that said injection needle of said injection device is translatable and non-rotatable within said needle portion of said piercing hollow needle; and

    an inner needle having a basal portion tightly fittable into said connector portion of said piercing hollow needle when said connector portion is not connected to said injection device and a solid needle portion, for reinforcing said needle portion of said piercing hollow needle, insertable almost tightly in said needle portion of said piercing hollow needle when said injection needle is not inserted in said needle portion.

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