Transvascular retrograde access devices

• US 8,568,435 B2
• Filed: 03/01/2013
• Issued: 10/29/2013
• Est. Priority Date: 08/21/2009
• Status: Active Grant

• Current Assignee: Vascular Access Technologies, Inc (Merit Medical Systems, Inc.)
• Original Assignee: Vascular Access Technologies, Inc (Merit Medical Systems, Inc.)
• Inventors: Pillai, Lakshmikumar, LaDuca, Paul A., Alavar, Frederich L., LaDuca, Robert
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): EASTWOOD, DAVID C
• Application Number:
  US13/782,931
• Publication Number:
  US 20130172922A1
• Time in Patent Office: 242 Days
• Field of Search: 606/108, 606/159, 606/167, 606/170, 606/185, 606/192, 606/194, 606/195, 604/43, 60416401-16412, 604506-510, 604/532, 600114-115, 600/424, 600/433
• US Class Current: 606/185
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 2025/09116 Design of handles or shafts or gripping surfaces thereof for manipulating guide wires
• CPC Class Codes: A61M 2025/09125 Device for locking a guide wire in a fixed position with respect to the catheter or the human body
• CPC Class Codes: A61M 2025/09175 having specific characteristics at the distal tip
• CPC Class Codes: A61M 2039/0258 for vascular access, e.g. blood stream access
• CPC Class Codes: A61M 2039/0273 for introducing catheters into the body
• CPC Class Codes: A61M 2039/0282 with implanted tubes connected to the port
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0133 Tip steering devices
• CPC Class Codes: A61M 25/0136 Handles therefor
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053

Abstract

A system for providing transvascular retrograde access in a central blood vessel of a patient. In some embodiments, the system has a handle; a catheter extending from the handle; and a tissue piercing element extending from the handle through the catheter, the tissue piercing element having a sharp distal tip adapted to extend from a distal portion of the catheter, the catheter and handle being adapted to be separated from the tissue piercing element, a distal portion of the tissue piercing element being adapted to serve as a guide for introduction of a device into the central blood vessel. The invention also includes a method of providing transvascular retrograde access to a central blood vessel of a patient.

Claims

1. A system for providing transvascular retrograde access in a central blood vessel of a patient, the system comprising:

a handle;

a catheter extending from the handle; and

a tissue piercing element extending from the handle through the catheter, the tissue piercing element comprising a sharp distal tip adapted to extend from a distal portion of the catheter, a distal portion of the tissue piercing element being adapted to serve as a guide for introduction of a device into the central blood vessel,

the handle including an actuator comprising a spring adapted to advance the tissue piercing element through an opening at the distal end of the catheter.

2. The system of claim 1 wherein a distal end of the catheter comprises an angled tip.

3. The system of claim 2 further comprising a reference at a proximal end of the catheter indicating a bending direction of the angled tip.

4. The system of claim 1 wherein the actuator further comprises a spring release element.

5. The system of claim 1 further comprising an interlock having a first state adapted to prevent actuation of the actuator and a second state adapted to permit actuation of the actuator.

6. The system of claim 1 further comprising a lock having a first state adapted to prevent movement of the tissue piercing element with respect to the actuator and a second state adapted to permit movement of the tissue piercing element with respect to the actuator.

7. The system of claim 1 wherein the handle comprises a deflection actuator adapted to deflect a distal tip of the catheter away from a longitudinal axis of the catheter.

8. The system of claim 1 wherein the handle further comprises a deflection indicator adapted to indicate an amount of deflection of the distal end of the catheter.

9. The system of claim 1 further comprising an interlock adapted to prevent movement of the sharp tip of the tissue piercing element out of the distal portion of the catheter unless the distal portion of the catheter is deflected away from a longitudinal axis of the catheter.

10. The system of claim 1 wherein the catheter and handle are adapted to be separated from the tissue piercing element.