Method and Systems for Providing an Infusion Device Interface
First Claim
1. An infusion device comprising:
- an infuser base having a bore extending therethrough, the bore having distal and proximal ends and including a shoulder therebetween;
a cannula having distal and proximal ends, the cannula proximal end having an inside diameter, with a flange extending radially outward from the cannula proximal end, the cannula being positioned in the bore such that the flange is positioned adjacent the shoulder; and
a ferrule having a ferrule insertion portion, having an outside diameter which is substantially equal to the cannula proximal end inside diameter, and a ferrule tapered portion extending from the ferrule insertion portion with an increasing outside diameter, the ferrule being positioned in the bore such that the ferrule insertion portion and a portion of the ferrule tapered portion are received in the cannula proximal end and the flange is compressed between the shoulder and the ferrule tapered portion to define a seal between the cannula and ferrule.
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Accused Products
Abstract
An infusion device comprising an infuser base, a cannula and a ferrule. The infuser base having a bore extending therethrough, the bore having distal and proximal ends and defining a shoulder therebetween. The cannula having distal and proximal ends, the proximal end having an inside first diameter. A flange extends radially outward from the cannula proximal end. The cannula is positioned in the bore such that the flange is positioned adjacent the shoulder. The ferrule has an insertion portion, having an outside second diameter which is substantially equal to the first diameter, and a tapered portion extending from the insertion portion. The ferrule is positioned in the bore such that the insertion portion and a portion of the tapered portion are received in the cannula proximal end and the flange is compressed between the shoulder and the tapered portion to define a seal between the cannula and ferrule.
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Citations
32 Claims
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1. An infusion device comprising:
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an infuser base having a bore extending therethrough, the bore having distal and proximal ends and including a shoulder therebetween;
a cannula having distal and proximal ends, the cannula proximal end having an inside diameter, with a flange extending radially outward from the cannula proximal end, the cannula being positioned in the bore such that the flange is positioned adjacent the shoulder; and
a ferrule having a ferrule insertion portion, having an outside diameter which is substantially equal to the cannula proximal end inside diameter, and a ferrule tapered portion extending from the ferrule insertion portion with an increasing outside diameter, the ferrule being positioned in the bore such that the ferrule insertion portion and a portion of the ferrule tapered portion are received in the cannula proximal end and the flange is compressed between the shoulder and the ferrule tapered portion to define a seal between the cannula and ferrule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An infusion device comprising:
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an infuser base having a bore extending therethrough, the bore having distal and proximal ends;
a cannula positioned in the bore; and
a ferrule positioned in the bore and sealingly coupled with the cannula, the ferrule having a distal portion, a proximal portion and a tapered portion therebetween, a junction between the ferrule tapered portion and the ferrule proximal portion defining a circumferential contact surface having an inside diameter that is less than an inside diameter of an inside surface of the ferrule proximal portion; and
an elastomeric septum, having an outside radial dimension larger than the inside diameter of the ferrule proximal portion, compressed in the ferrule proximal portion and defining at least a first circumferential seal between the septum and the inside surface of the ferrule proximal portion or between the septum and the circumferential contact surface. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A method of assembling an infusion device comprising:
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providing an infuser base having a bore extending therethrough, the bore having distal and proximal ends and including a shoulder therebetween;
positioning a cannula, having distal and proximal ends and a flange extending radially outward from the cannula proximal end, in the bore such that the flange is positioned adjacent the shoulder;
positioning a ferrule, having a ferrule insertion portion with an outside diameter which is substantially equal to an inside diameter of the cannula proximal end and a ferrule tapered portion extending from the ferrule insertion portion with an increasing outside diameter, in the bore such that the ferrule insertion portion is received in the cannula proximal end; and
advancing the ferrule distally such that a portion of the ferrule tapered portion is received in the cannula proximal end and the flange is compressed between the shoulder and the ferrule tapered portion to define a seal between the cannula and ferrule. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification