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Drug pellet delivery system and method

  • US 10,434,261 B2
  • Filed: 11/08/2016
  • Issued: 10/08/2019
  • Est. Priority Date: 11/08/2016
  • Status: Active Grant
First Claim
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1. A delivery device comprising:

  • a housing comprising a cavity;

    a cartridge positioned within the cavity and comprising a body comprising an outer surface and having a concave inner surface extending into the body in a first direction and defining a channel having a longitudinal axis, the body comprising a first pair of rails protruding from the outer surface in a second direction opposite the first direction and a second pair of rails protruding from the outer surface in the second direction, wherein the first pair of rails is configured to block and redirect a plunger to maintain alignment of the plunger through the channel; and

    the plunger slidably disposed in the housing and the cartridge, the plunger being configured to move a drug depot through the channel and out of the housing,wherein the first pair of rails is spaced apart by the channel,wherein the first pair of rails is outward of the channel, andwherein each said rail of the first pair of rails comprises;

    a first planar surface parallel to the longitudinal axis of the channel; and

    a second planar surface tapered towards a distal end of the body.

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