Portal access device with removable sharps protection
First Claim
1. In combination, a blunt cannula, an infuser to which said blunt cannula is connected, a tube extending from said infuser, said infuser establishing a fluid communication path between said blunt cannula and said tube, a sharp cannula removably mated to said blunt cannula through said infuser with the tip of said sharp cannula exposed beyond the tip of said blunt cannula, said sharp cannula attached to a first end of an arm, a second end of said arm movably connected to a distal portion of a base, said sharp cannula extending through an opening at a proximal portion of said base, the proximal portion of said base configured to fit over said infuser when said sharp cannula is mated to said blunt cannula, said sharp cannula removed from said blunt cannula when the first end of said arm is moved in a direction away from the proximal portion of said base.
5 Assignments
0 Petitions
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
26 Claims
- 1. In combination, a blunt cannula, an infuser to which said blunt cannula is connected, a tube extending from said infuser, said infuser establishing a fluid communication path between said blunt cannula and said tube, a sharp cannula removably mated to said blunt cannula through said infuser with the tip of said sharp cannula exposed beyond the tip of said blunt cannula, said sharp cannula attached to a first end of an arm, a second end of said arm movably connected to a distal portion of a base, said sharp cannula extending through an opening at a proximal portion of said base, the proximal portion of said base configured to fit over said infuser when said sharp cannula is mated to said blunt cannula, said sharp cannula removed from said blunt cannula when the first end of said arm is moved in a direction away from the proximal portion of said base.
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9. Apparatus comprising:
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an infuser having a blunt cannula extending downwardly therefrom and a tube connected thereto for establishing a fluid communication path between said tube and said blunt cannula;
a base having a distal portion and a proximal portion, an arm having a second end hingedly and movably connected to the distal portion of said base, a sharp cannula attached to a first end of said arm, an opening provided at the proximal portion of said base, said base covering said infuser with said sharp cannula removably mated to said blunt cannula through said opening at the proximal portion of said base and the tip of said sharp cannula exposed beyond the tip of said blunt cannula when said arm lies substantially longitudinally along said base;
wherein said sharp cannula is removed from said blunt cannula when said first end of said arm is moved pivotally in a direction away from said base. - View Dependent Claims (10, 11, 12, 13)
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15. Apparatus for establishing fluid communication to a port implanted to a patient, comprising:
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an infuser having a blunt cannula extending downwardly therefrom and a tube connected thereto for establishing a fluid communication path between said tube and said blunt cannula;
a base having a sharp cannula, said base superposed over said infuser, said sharp cannula removably mated to said blunt cannula with the tip of said sharp cannula exposed beyond the tip of said blunt cannula;
wherein said sharp cannula is removed from said blunt cannula after the combined sharp and blunt cannulas were inserted to the patient to position said cannulas in said port, said blunt cannula remaining positioned in said port to establish a fluid communication path from said infuser to said port via said blunt cannula. - View Dependent Claims (16, 17, 18)
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19. A method of establishing a fluid path between a fluid store and a port implanted in a patient, comprising the steps of:
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a) providing an infuser having a blunt cannula extending downwardly therefrom and a tube having one end connected thereto and another end connected to said fluid store, said tube being in fluid communication with said blunt cannula;
b) providing a base having a sharp cannula;
c) superposing said base over said infuser and removably mating said sharp cannula to said blunt cannula until the tip of said sharp cannula is exposed beyond the tip of said blunt cannula;
d) inserting the combined sharp and blunt cannulas to the patient to position said cannulas into said port; and
e) removing said sharp cannula from said blunt cannula while leaving said blunt cannula in said port;
whereby a fluid communication path is established between said port and said fluid store through said blunt cannula and said infuser. - View Dependent Claims (20, 21, 22, 23, 24)
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- 25. Apparatus comprising an infuser housing adaptable for storing fluids, a blunt cannula extending downwardly from said housing adapted to be inserted into a port, and a tube connected to a side of said housing, a fluid path being established between said tube and said blunt cannula through said housing.
Specification