Cannula system with rigid cannula
AssigneeRoche Diabetes Care, Inc.
InventorMads Bjoern Rasmussen
Life of this patent
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Abstract
Disclosed is a cannula system having a rigid cannula, a cannula assembly and an insertion assembly. The rigid cannula is connected to the cannula assembly. The cannula assembly has a septum mounted to a mounting structure of the cannula assembly, a connecting structure for reversibly or irreversibly connecting the cannula assembly to a cannula assembly holder, a cavity being at least partially formed by the septum. The rigid cannula is in fluidic communication with the cavity. Furthermore, the insertion assembly has a rigid needle at least partially penetrating the septum and an attachment structure for reversibly attaching the insertion assembly to the cannula assembly.
Claims12
A cannula system, comprising:
- a cannula assembly comprising a septum mounted to a mounting structure of the cannula assembly, a connector configured for reversibly or irreversibly connecting the cannula assembly to a cannula assembly holder, and a cavity at least partially formed by the septum;
- a rigid cannula connected to the cannula assembly and having a lumen in fluidic communication with the cavity;
- an insertion assembly having a rigid needle;
- an attachment structure configured for reversibly attaching the insertion assembly to the cannula assembly, wherein the rigid needle penetrates the septum without extending into the lumen of the rigid cannula and has a tip disposed within the cavity when the insertion assembly is attached to the cannula assembly;
- and
- wherein the rigid cannula includes a protrusion protruding from the cannula in the form of a collar and the rigid cannula is fixedly connected to the cannula assembly by a lock which comprises at least one hole comprising a through bore or a blind hole in the collar wherein material forming the mounting structure is disposed within the at least one hole and surrounds the protrusion.
Dependencies are inferred from the claim text.