Detecting needle entry into a port of an infusion device
First Claim
1. A method for detecting insertion of a needle into a port chamber of an implantable infusion device, the device including a port assembly defining the port chamber, the port assembly having a septum disposed across the port chamber to fluidly seal the port chamber relative to an exterior of the device, the method comprising:
- sensing, via a pressure sensor in fluid communication with the port chamber, a pressure change in the port chamber; and
,determining, via electronics operably coupled to the pressure sensor, whether the sensed pressure change is indicative of insertion of the needle through the septum into the port chamber prior to dispensing fluid into the port chamber.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems for detecting needle insertion into a port chamber of an implantable medical device include a pressure sensor. The system detects characteristic pressure profiles associated with needle insertion into the port chamber through a septum and may generate a sensory cue to a clinician that proper needle placement has been achieved. Methods for detecting needle insertion into a port chamber of an implantable medical device includes detecting characteristic pressure profiles associated with needle insertion into the port chamber through a septum.
-
Citations
14 Claims
-
1. A method for detecting insertion of a needle into a port chamber of an implantable infusion device, the device including a port assembly defining the port chamber, the port assembly having a septum disposed across the port chamber to fluidly seal the port chamber relative to an exterior of the device, the method comprising:
-
sensing, via a pressure sensor in fluid communication with the port chamber, a pressure change in the port chamber; and
,determining, via electronics operably coupled to the pressure sensor, whether the sensed pressure change is indicative of insertion of the needle through the septum into the port chamber prior to dispensing fluid into the port chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10)
-
-
8. The method of clam 7, wherein generating the sensory cue comprises generating an audible cue.
-
11. A method comprising:
-
inserting a needle into a patient to access a port chamber defined by a port assembly of an infusion device implanted in the patient, the port chamber being accessible from an exterior of the infusion device through a septum disposed across the port chamber to fluidly seal the port chamber relative to the exterior of the infusion device; sensing a pressure change in a port chamber; determining whether the sensed pressure change is indicative of insertion of the needle through the septum into the port chamber prior to dispensing fluid into the port chamber; and generating a sensory cue if the sensed pressure change is indicative of insertion of the needle through the septum into the port chamber. - View Dependent Claims (12, 13, 14)
-
Specification