Removable sharps device for accessing a portal reservoir
First Claim
1. Apparatus comprising a base having a distal portion and a proximal portion, a cannula attached to a first end of an arm, a second end of said arm hingedly connected to the distal portion of said base so that said arm is pivotable relative to said base at its second end, an opening provided at the proximal portion of said base wherethrough said cannula passes, a bore extending from said opening at the proximal portion of said base, a first lock mechanism provided at the distal portion of said base and a second lock mechanism provided at the second end of said arm, said first and second lock mechanisms coacting to prevent further movement of said arm relative to said base after the tip of said cannula moves past said opening and is within said bore.
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Accused Products
Abstract
A portal access device that is adapted to provide long term access to a port implanted in a patient has two major components, an infuser assembly and a safety needle insertion device. The infuser assembly has an infuser housing that can be configured into a specific shape, for example a dome. A blunt cannula is attached to and extends downwardly from the underside of the infuser housing. Also connected to the infuser housing, preferably at a side thereof, is a tubing or catheter. The safety needle inserter assembly has a base having a proximal portion that is configured to form fit over the infuser housing. At the distal portion of the base uprights are provided so that a second end of an arm, to which first end a needle or a sharp cannula is connected, may be movably and hingedly connected to the base. The sharp cannula extends from the underside of the proximal end of the arm and passes through the base by way of a bore formed at the proximal portion of the base. The bore is defined between an opening at the underside of the base and an opening at the upper surface of the base. Locking mechanisms are provided at the base uprights and the distal end of the arm so that when the arm is moved away from the base, and as the distal end of the arm pivots about the uprights, the respective locking mechanisms provided at the arm and the base would coact to lock the arm in place, to thereby maintain the tip of the needle within the bore formed in the base. To use, the safety needle inserter is placed over the infuser assembly, with the sharp cannula extending through the infuser housing and axially mating with the blunt cannula of the infuser assembly, but with the tip of the sharp cannula protruding beyond the tip of the blunt cannula. The combined needle inserter/infuser assembly is pressed down onto the skin surface of the patient so that the combination sharp/blunt cannulas penetrate the patient and puncture the self-sealing septum of a portal reservoir implanted in the patient. Once the safety needle inserter is removed from the infuser assembly, with the infuser housing septum being self-sealing, a closed fluid communication path is established between the portal reservoir and a fluid store that may be connected to the catheter of the infuser assembly. Long term access of the implanted portal reservoir is thereby achieved.
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Citations
24 Claims
- 1. Apparatus comprising a base having a distal portion and a proximal portion, a cannula attached to a first end of an arm, a second end of said arm hingedly connected to the distal portion of said base so that said arm is pivotable relative to said base at its second end, an opening provided at the proximal portion of said base wherethrough said cannula passes, a bore extending from said opening at the proximal portion of said base, a first lock mechanism provided at the distal portion of said base and a second lock mechanism provided at the second end of said arm, said first and second lock mechanisms coacting to prevent further movement of said arm relative to said base after the tip of said cannula moves past said opening and is within said bore.
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11. A safety needle device, comprising:
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a base having a distal portion and a proximal portion, an opening provided at the proximal portion of said base, a bore extending from said opening at the proximal portion of said base;
an arm having a first end and a second end, the second end of said arm being hingedly connected to the distal portion of said base so that said arm is pivotally movable relative to said base at its second end; and
a cannula having a tip extending downwardly from the first end of said arm and passes through said opening of said base before use;
wherein when the first end of said arm is moved to its upmost position, said cannula is withdrawn from said opening and the tip of said cannula is positioned within said bore. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A safety needle device, comprising:
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a base having a distal portion and a proximal portion, an opening provided at the proximal portion of said base, a bore extending from said opening at the proximal portion of said base;
an arm having a first end and a second end, the second end of said arm being hingedly connected to the distal portion of said base so that said arm is pivotally movable relative to said base at its second end;
a right angle cannula mounted to said arm, a vertical portion of said cannula including the tip of said cannula extending downwardly from the first end of said arm and passes through said opening of said base before use, a horizontal portion of said cannula mounted along the length of said arm;
a first lock mechanism having a first and a second part provided at the distal portion of said base; and
a second lock mechanism having a first and second part provided at the second end of said arm;
wherein the respective first parts of said first and second lock mechanisms coact to prevent further movement of said arm relative to said base along one direction after the tip of said cannula is positioned within said bore, and wherein the respective second parts of said first and second lock mechanisms coact to prevent further movement of said arm relative to said base along another direction once the tip of said cannula is positioned within said bore. - View Dependent Claims (22, 23, 24)
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Specification