Medical fluid delivery system

• US 7,274,966 B2
• Filed: 01/08/2004
• Issued: 09/25/2007
• Est. Priority Date: 10/02/2002
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Sommer, John L., Coles, James A. Jr., Sigg, Daniel C.
• Primary Examiner(s): Bockelman; Mark
• Application Number:
  US10/754,173
• Publication Number:
  US 20040147963A1
• Time in Patent Office: 1,356 Days
• Field of Search: 607115-128, 604/165.02, 604/164.01, 604174-175
• US Class Current: 607/120
• CPC Class Codes: A61M 2025/0089 Single injection needle protruding axially, i.e. along the longitudinal axis of the catheter, from the distal tip
• CPC Class Codes: A61M 2025/0095 being one or more needles protruding from the distal tip and which are not used for injection nor for electro-stimulation, e.g. for fixation purposes
• CPC Class Codes: A61M 25/0026 Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/0082 Catheter tip comprising a tool
• CPC Class Codes: A61M 25/0084 being one or more injection needles
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/0575 with drug delivery
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium

Abstract

A medical fluid delivery system includes an implantable medical lead including a fixation element adapted to secure the lead to a tissue site and a fluid delivery device including a tissue piercing distal tip; the device is adapted to pass through a proximal port, a lumen and a distal port of the lead. The system further includes means for adjusting a position of the device distal tip with respect to the lead distal port.

Claims

1. A medical fluid delivery system, comprising:

an implantable medical lead including a proximal port, a distal port, a lumen extending between the proximal port and the distal port and a distal fixation element adapted to secure the lead to a tissue site such that the distal port is in proximity to the tissue site;

a fluid delivery device including a tissue piercing distal tip, the device adapted to pass through the lead proximal port, through the lead lumen and through the lead distal port;

means for adjusting a position of the device distal tip with respect to the lead distal port; and

a locking mechanism adapted to hold the fluid delivery device in a stable position within the lead lumen and including a lead-clamping portion and a fluid delivery device-clamping portion.

2. The system of claim 1, wherein the means for adjusting the position of the device distal tip comprises a threaded interface formed between the lead-clamping portion and the device-clamping portion of the locking mechanism.

3. The system of claim 1, wherein:

the implantable medical lead further includes a proximal connector pin formed about the proximal port; and

the locking mechanism is affixed to the connector pin via a set-screw.

4. The system of claim 3, wherein the set-screw forms an electrical coupling between an electrical probe and the connector pin.

5. The system of claim 1, wherein the device-clamping portion of the locking mechanism includes a chuck mechanism for engaging the device.