Compact spring inserter for drug deliver infusion set
First Claim
1. An infusion set, comprising:
- a base;
a flexible catheter movable from a first catheter position disposed substantially entirely within said base to a second catheter position in which a free end of said catheter is disposed externally of said base;
an introducer needle located within said catheter and movable between a first introducer needle position disposed substantially entirely within said base and a second introducer needle position in which a free end of said introducer needle is disposed externally of said base; and
a torsion spring disposed within said infusion set and having an axis substantially perpendicular to said base for moving said catheter from said first to said second catheter position and said introducer needle from said first to said second introducer needle position to facilitate insertion of said catheter, said introducer needle thereafter being moved by said torsion spring back to said first introducer needle position to store said introducer needle within said base with said free end of said catheter remaining disposed externally of said base.
1 Assignment
0 Petitions
Accused Products
Abstract
An infusion set (201) includes a base (221) and a flexible catheter (242) movable from a first catheter position disposed substantially entirely within the base (221) to a second catheter position in which a free end of the catheter (242) is disposed externally of the base (221). An introducer needle (234) is located within the catheter (242) and is movable between a first introducer needle position disposed substantially entirely within the base (221) and a second introducer needle position in which a free end of the introducer needle (234) is disposed externally of the base (221). A torsion spring (281) is activated to move the catheter (242) from the first to the second catheter position and the introducer needle (234) from the first to the second introducer needle position to facilitate insertion of the catheter (242). The introducer needle (234) is thereafter moved by the torsion spring (281) back to the first introducer needle position to store the introducer needle (234) within the base (221) with the free end of the catheter (242) remaining disposed externally of the base (221).
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Citations
20 Claims
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1. An infusion set, comprising:
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a base; a flexible catheter movable from a first catheter position disposed substantially entirely within said base to a second catheter position in which a free end of said catheter is disposed externally of said base; an introducer needle located within said catheter and movable between a first introducer needle position disposed substantially entirely within said base and a second introducer needle position in which a free end of said introducer needle is disposed externally of said base; and a torsion spring disposed within said infusion set and having an axis substantially perpendicular to said base for moving said catheter from said first to said second catheter position and said introducer needle from said first to said second introducer needle position to facilitate insertion of said catheter, said introducer needle thereafter being moved by said torsion spring back to said first introducer needle position to store said introducer needle within said base with said free end of said catheter remaining disposed externally of said base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An infusion set, comprising:
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a base; a catheter hub movable from a first catheter hub position to a second catheter hub position; a flexible catheter connected to said catheter hub, said catheter being disposed substantially entirely within said base when said catheter hub is in said first catheter hub position and said catheter having a free disposed externally of said base when said catheter hub is in said second catheter hub position; an introducer hub movable between a first introducer hub position and a second introducer hub position; an introducer needle located within said catheter and connected to said introducer hub, said introducer needle being disposed substantially entirely within said base when said introducer hub is in said first introducer hub position and said introducer needle having a free end disposed externally of said base when said introducer hub is in said second introducer hub position; and a torsion spring disposed within said infusion set and having an axis substantially perpendicular to said base for moving said catheter huh and said introducer hub, wherein prior to activating said torsion spring, said catheter hub and said introducer hub are in said first catheter hub position and said first introducer hub position, respectively, and when said torsion spring is activated, said catheter hub is moved to said second catheter hub position and said introducer hub is moved to said second introducer hub position and then retracted to said first introducer hub position. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of inserting a flexible catheter of an infusion set, comprising
disposing the infusion set on a skin surface at an injection site; -
inserting an introducer needle and the flexible catheter through the skin surface by activating a torsion spring disposed within the infusion set and having an axis substantially perpendicular to said skin surface; removing the inserted introducer needle by continued movement of the torsion spring; and storing the removed introducer needle substantially entirely within a body of the infusion set. - View Dependent Claims (19, 20)
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Specification