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Apparatus and method for implanting radioactive seeds in tissue

  • US 5,928,130 A
  • Filed: 03/16/1998
  • Issued: 07/27/1999
  • Est. Priority Date: 03/16/1998
  • Status: Expired due to Term
First Claim
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1. A tool for implanting radioactive seeds in tissue, comprising:

  • an elongate hollow needle having a pointed leading end for facilitating introduction of said hollow needle into tissue at a preselected site;

    a hollow elongate sleeve having an external diameter slightly less than an internal diameter of said hollow needle;

    a plurality of radioactive seeds and nonradioactive spacers adapted to be slideably received within a hollow interior of said elongate sleeve, said seeds and spacers having a common external diameter slightly less than an internal diameter of said elongate sleeve; and

    an elongate push rod having a longitudinal extent substantially equal to a longitudinal extent of said elongate sleeve;

    wherein said hollow needle slideably receives said elongate sleeve when said seeds and spacers are loaded into said elongate sleeve; and

    whereby said seeds and spacers are displaced from said elongate sleeve and hence from said hollow needle by retracting said hollow needle and elongate sleeve while maintaining said push rod in a fixed position.

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