Non-sheath based medical device delivery system

• US 20040059348A1
• Filed: 09/23/2002
• Published: 03/25/2004
• Est. Priority Date: 09/23/2002
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Waldhauser, Steven L., Kelley, James F., Geske, Jeff B., Chivers, Bruce E.
• Granted Patent: US 7,092,765 B2
• Time in Patent Office: Days
• US Class Current: 606/129
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3439 with means for changing the inner diameter of the cannula, e.g. expandable A61B17/3423, A61B17/3431 take precedence; catheters A61M25/0662
• 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 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/00469 for insertion of instruments, e.g. guide wire, optical fibre
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: A61N 2001/0578 having means for removal or extraction

Abstract

A non-sheath based medical device delivery system is provided including an elongated tubular guide body having a distal end fixedly attached to a resilient collet with a longitudinal opening to receive a medical lead or other device. The collet may be opened by actuating a retraction member to cause the closing member to slide proximally along the collet shaft, allowing the collet to maintain a normally open position. With the collet closed, the device may be advanced to a desired internal body location by advancing the guide body. The majority of the device body will be exposed, running alongside the guide body, allowing any sensors or electrodes located on the device body to be fully operational during the implantation procedure. The delivery system may be removed by opening the collet, to slidably disengage from the device body.

Claims

1. A medical device deployment system comprising:

a resilient collet;

a closing member in cooperative engagement with the collet;

an elongated tubular guide structure having a proximal end and a distal end, wherein the distal end is attached to a portion of the collet; and

a retraction member having a proximal end and a distal end, the distal end being attached to the closing member and the proximal end exiting said proximal end of the elongated tubular guide structure and wherein actuation of the retraction member moves the closing member to a first position and actuating the retraction member in an opposite direction moves the closing member to a second member.

2. The resilient collet of claim 1, wherein at least two separating elements at the distal end form a resilient flaring structure.

3. The collet of claim 2, wherein said resilient flaring elements to adjust to various opening sizes at the distal end.

4. The collet of claim 3, wherein said closing member movably enables adjustment of said opening sizes.

5. The collet of claim 1, wherein said resilient flaring elements form a generally dome-like structure at the distal end.

6. The collet of claim 5, wherein said flaring elements form hypodermic needle-like tip.

7. The collet of claim 5, wherein said flaring elements include a tipped conical structure.

8. The collet of claim 5, wherein said flaring elements form a tipped shape including one of and a combination of a geometric shape and multiple geometric shapes.

9. The collet of claim 5 wherein said flaring elements are separated by at least one gap therebetween extending longitudinally therefrom.