Medical Device Delivery System

• US 20080109059A1
• Filed: 01/08/2008
• Published: 05/08/2008
• Est. Priority Date: 12/05/2002
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Gordon, Lucas, Mathis, Mark, Nieminen, Greg
• Granted Patent: US 8,075,608 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires

Abstract

A system for selectively deploying a medical device includes a cartridge that is engageable with a proximal end of a delivery catheter that is routed to a desired location in a patient'"'"'s body. An advancement mechanism is provided for advancing the medical device out of the cartridge and into the delivery catheter for deploying the medical device at the desired location in the patient'"'"'s body.

Claims

1. A system for selectively advancing a medical device into a patient;

comprising;

a delivery catheter having a distal end that is inserted into a patient'"'"'s body, a proximal end that remains outside the patient'"'"'s body and one or more lumens that extend between the proximal and distal end;

a cartridge that is engageable with the proximal end of the delivery catheter, the cartridge including a lumen that aligns with a lumen in the delivery catheter when the cartridge is engaged with the proximal end of the delivery catheter;

a medical device within the lumen of the cartridge; and

an advancing mechanism for advancing the medical device out of the cartridge and into a lumen of the delivery catheter.

2. The system of claim 1, wherein the advancing mechanism comprises a push rod that engages the medical device.

3. The system of claim 2, wherein the proximal end of the push rod is secured to a handle.

4. The system of claim 3, wherein the handle and cartridge can be selectively engaged.

5. The system of claim 4, wherein the handle and cartridge are selectively engaged with a set of threads and a nut.

6. The system of claim 4, further comprising one or more devices for prohibiting the engagement of the handle and cartridge.

7. The system of claim 6, wherein the one or more devices for prohibiting the engagement of the handle and cartridge comprises a slot having at least one stop, and a tab that fits within the slot and engages the stop.

8. The system of claim 6, wherein the one or more devices for prohibiting the engagement of the handle and cartridge comprises a key that is engaged with one of the cartridge or handle to prevent relative motion between the handle and the cartridge.

9. A system for delivering a medical device to a desired location in a patient, comprising:

a cartridge having a proximal end, a distal end and a cavity therein;

a connector on the distal end of the cartridge for engaging a proximal end of a delivery catheter such that the cavity is aligned with a lumen in the delivery catheter;

a compressed medical device within the cavity of the cartridge; and

means for advancing the medical device from the cartridge and into the lumen of the delivery catheter.

10. A system for delivery a medical device to a desired location in a patient, comprising:

a cartridge having a proximal end, a distal end and a cavity therein;

a connector on the cartridge that engages a corresponding connector on a proximal end of a delivery catheter in order to align the cavity with a lumen of the delivery catheter;

a medical device collapsed within the cavity;

a push rod that engages a medical device and advances it into the lumen of the delivery catheter;

a handle secured to the push rod; and

means for selectively moving the handle and the cartridge including means for limiting the movement of the cartridge with respect to the handle.

11. The system of claim 10, wherein the push rod comprises a hypotube at a proximal end, a coil at the distal end and a coupler that joins the hypotube and coil.

12. The system of claim 11, further comprising a polymer jacket over the push rod.

13. The system of claim 10, wherein the cavity in the cartridge is tapered.

14. The system of claim 13, wherein the taper narrows distally in the cartridge.

15. The system of claim 13, wherein the taper narrows proximally in the cartridge.

16. The system of claim 10, wherein the medical device is compressed within the cartridge.

17. The system of claim 16, wherein the medical device is a self expanding stent.

18. The system of claim 16, wherein the medical device is a mitral valve suspension cable.