Needle placement sensor

• US 5,006,115 A
• Filed: 07/25/1989
• Issued: 04/09/1991
• Est. Priority Date: 07/25/1989
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: McDonald, Ray S.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): Lewis, Ralph A.
• Application Number:
  US07/385,131
• Time in Patent Office: 623 Days
• Field of Search: 604/93, 604/175, 604/8-10, 604/131, 604/891, 116/DIG. 17, 116/205
• US Class Current: 604/175
• CPC Class Codes: A61M 2039/0226 having means for protecting the interior of the access site from damage due to the insertion of a needle
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

An implantable medical device having a main body, and a port in the main body for receiving a medical instrument percutaneously. A resilient dome is mounted in the device for communicating with the medical instrument, and for flexing from a first rest position to a second position after contact with the medical instrument. The dome provides an extra corporeal response signal resulting from the flexion of the dome from the first position to the second position.

Claims

1. An implantable medical device comprising:

a device body;

port means in said device body for receiving a medical instrument percutaneously; and

means, mounted in the device for communication with the medical instrument for flexing from a first rest position to a second position after contact with the medical instrument, and for providing an extracorporeal response signal resulting from the flexion from the first position to the second position.

2. The device of claim 1 wherein said flexing means provides an audible response to the movement from the first to the second position.

3. The device of claim 1 wherein said flexing means provides a tactile response to the movement from the first to the second position.

4. An implantable device comprising:

a reservoir;

means for receiving a needle for insertion of liquid in the reservoir;

a dome mounted in the reservoir having a first rest position and a second depressed position, the dome designed for movement between the first and second position upon needle contact, the dome providing an audible response to the movement of the first to the second position.