Minimally traumatic trocar method for subcutaneous medication delivery
AssigneeVitalte Lifesciences Inc.
InventorCharles P. Virden
Life of this patent
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Abstract
A method for delivering a medication pellet to a subcutaneous insertion site with a round tipped obturator and blunt cannula is described. The obturator is received within the cannula. The cannula includes a tubular cannula body having a smooth anterior surface a medication slot disposed along the cannula body. The cannula and obturator probe an incision into the subcutaneous tissue along a non-linear insertion path within the subcutaneous tissue. The obturator is removed from the cannula, and the medication pellet is placed in the medication slot. The cannula body again receives the obturator, which passes the pellet through the cannula body with its anterior rounded tip so that the obturator pushes the pellet(s) through the cannula body. The pellet exits the cannula body.
Claims20
A method for delivering a medication pellet through an incision to a delivery site within a subcutaneous tissue comprising:
- receiving an obturator in a cannula, wherein the obturator includes an anterior rounded tip and a tubular obturator body, wherein the cannula includes a tubular cannula body having a smooth anterior surface and a medication slot disposed along the tubular cannula body, and wherein an inner diameter of the tubular cannula body is at least 3 millimeters (mm);
- passing the obturator through the tubular cannula body so that the anterior rounded tip of the obturator extends past the smooth anterior surface of the tubular cannula body;
- probing, with the cannula and the obturator, the incision into the subcutaneous tissue along a non-linear insertion path within the subcutaneous tissue;
- removing the obturator from the tubular cannula body;
- placing the medication pellet in the medication slot;
- receiving, by the tubular cannula body having the medication pellet therein, the obturator;
- passing, by the anterior rounded tip of the obturator, the medication pellet through the tubular cannula body so that the obturator pushes the medication pellet through the tubular cannula body and the medication pellet exits the tubular cannula body;
- delivering, by passing the obturator through the tubular cannula body, the medication pellet;
- and
- aligning the medication pellet along the insertion path.
A method for delivering a medication pellet through an incision to a delivery site within a subcutaneous tissue, the method comprising:
- inserting a trocar apparatus through the incision to the delivery site within the subcutaneous tissue, wherein the trocar apparatus includes,
- a cannula with a tubular cannula body, a smooth anterior surface, and a medication slot disposed along the tubular cannula body that receives the medication pellet, and
- an obturator that includes a tubular obturator body and an anterior rounded tip, wherein the obturator is received within the tubular cannula body, and extend through the tubular cannula body so that the anterior rounded tip of the obturator extends past the smooth anterior surface of the tubular cannula body;
- probing, with the trocar apparatus, the incision along a non-linear insertion path within the subcutaneous tissue;
- removing the obturator from the cannula:
- placing the medication pellet in the medication slot;
- receiving, by the tubular cannula body having the medication pellet therein, the obturator;
- and
- passing, by the anterior rounded tip, the medication pellet through the tubular cannula body so that the anterior rounded tip pushes the medication pellet through the tubular cannula body and the medication pellet exit the tubular cannula body into the subcutaneous tissue;
- delivering, by passing the obturator through the tubular cannula body, the medication pellet;
- and
- aligning the medication pellet along the insertion path.
A method for delivering two or more medication pellets through an incision to a delivery site within a subcutaneous tissue comprising:
- receiving an obturator in a cannula, wherein the obturator includes an anterior rounded tip and a tubular obturator body, wherein the cannula includes a tubular cannula body having an anterior end, a posterior end, and a medication slot disposed along the tubular cannula body;
- passing the obturator through the tubular cannula body so that the anterior rounded tip of the obturator extends past the anterior end of the tubular cannula body;
- probing, with the cannula and the obturator, the incision into the subcutaneous tissue along a non-linear insertion path within the subcutaneous tissue;
- removing the obturator from the tubular cannula body;
- placing the two or more medication pellets in the medication slot;
- receiving, by the tubular cannula body having the two or more medication pellets therein, the obturator;
- passing, by the anterior rounded tip of the obturator, the two or more medication pellets through the tubular cannula body so that the obturator pushes the two or more medication pellets through the tubular cannula body and the two or more medication pellets exit the anterior end of the tubular cannula body;
- delivering, by passing the obturator through the tubular cannula body, the two or more medication pellets;
- and
- aligning the two or more medication pellets along the non-linear insertion path.
Dependencies are inferred from the claim text.