Anchoring guide element

• US 8,394,010 B2
• Filed: 04/18/2011
• Issued: 03/12/2013
• Est. Priority Date: 10/24/2007
• Status: Active Grant

• Current Assignee: Circulite Inc. (Medtronic Plc)
• Original Assignee: Circulite Inc. (Medtronic Plc)
• Inventors: Farnan, Robert C.
• Primary Examiner(s): Lavert, Nicole F
• Application Number:
  US13/088,620
• Publication Number:
  US 20110190707A1
• Time in Patent Office: 694 Days
• Field of Search: 600 16- 17, 607/115, 607/130, 604/264
• US Class Current: 600/16
• CPC Class Codes: A61M 1/3653 Interfaces between patient blood circulation and extra-corporal blood circuit
• CPC Class Codes: A61M 1/3659 Cannulae pertaining to extracorporeal circulation
• CPC Class Codes: A61M 1/3666 Cardiac or cardiopulmonary bypass, e.g. heart-lung machines
• CPC Class Codes: A61M 1/3667 with assisted venous return
• CPC Class Codes: A61M 2025/0233 specifically adapted for attaching to a body wall by means which are on both sides of the wall, e.g. for attaching to an abdominal wall
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 60/295 Balloon pumps for circulatory assistance

Abstract

A transseptal cannula assembly for directing blood from the heart of a patient and a minimally invasive method of implanting the same. The transseptal cannula assembly includes a flexible cannula body having proximal and distal portions with a lumen therebetween, a tip coupled to the distal portion of the flexible cannula body, and first and second anchors coupled to the tip. The anchors can be configured to be deployed from a contracted state to an expanded state and are configured to engage opposite sides of the heart tissue when in the expanded state. The anchors resist movement of the cannula assembly along a lengthwise central axis of the flexible cannula body.

Claims

1. An anchoring guide-element comprising:

a body portion having a distal end and a proximal end, the body portion configured to receive a surgical device and move relative thereto;

a unitary rigid tip coupled to the distal end of the body portion;

a first anchoring portion coupled with the unitary rigid tip at the distal end of the body portion, wherein the first anchoring portion is configured to be deployed from a contracted state to an expanded state that engages a tissue wall while the body portion extends therefrom, the first anchoring portion being oriented substantially transverse to a lengthwise central axis of the body portion and operable to resist retraction through the tissue wall when in the expanded state; and

a second anchoring portion coupled with the unitary rigid tip at the distal end of the body portion, wherein the second anchoring portion is configured to be deployed from a contracted state to an expanded state to engage the tissue wall.

2. The anchoring guide-element of claim 1, wherein at least one of the first and second anchoring portions includes a plurality of struts.

3. The anchoring guide-element of claim 1, wherein at least one of the first and second anchoring portions includes a double bend having first and second curved portions, wherein the first and second curved portions are substantially opposed.

4. The anchoring guide-element of claim 1, wherein at least one of the first and second anchoring portion includes a loop.

5. The anchoring guide-element of claim 1, wherein the surgical device is a catheter.

6. The anchoring guide-element of claim 1, wherein the first anchoring portion is constrained to the contracted state when located within the surgical device and is configured to be automatically deployed to the expanded state when the first anchoring portion is not constrained within the surgical device.

7. The anchoring guide-element of claim 6, wherein the first anchoring portion is constructed from a superelastic material.

8. The anchoring guide-element of claim 1, wherein at least one of the first and second anchoring portions is constructed from a superelastic material.