Method and device for treating dysfunctional cardiac tissue

• US 8,506,474 B2
• Filed: 08/21/2006
• Issued: 08/13/2013
• Est. Priority Date: 08/19/2005
• Status: Active Grant

• Current Assignee: Bioventrix, Inc.
• Original Assignee: Bioventrix, Inc.
• Inventors: Annest, Lon, O'Reilly, Robert, Chin, Sing-Fatt
• Primary Examiner(s): Marmor, II, Charles A
• Assistant Examiner(s): Dorna, Carrie R
• Application Number:
  US11/507,146
• Publication Number:
  US 20070073274A1
• Time in Patent Office: 2,549 Days
• Field of Search: 600 16- 18, 600/37, 128897-898
• US Class Current: 600/37
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0467 Instruments for cutting sutures surgical cutting instruments A61B17/32
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/06004 Means for attaching suture to needle tipping A61B17/06195; connecting wire to other metallic objects B21F15/00
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/1227 Spring clips
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/0404 Buttons
• CPC Class Codes: A61B 2017/06052 Needle-suture combinations in which a suture is extending inside a hollow tubular needle, e.g. over the entire length of the needle
• CPC Class Codes: A61B 2017/06176 with protrusions, e.g. barbs
• CPC Class Codes: A61B 2017/0647 having one single leg, e.g. tacks
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2017/308 with suction cups
• CPC Class Codes: A61F 2/2481 Devices outside the heart wall, e.g. bags, strips or bands
• CPC Class Codes: A61F 2/2487 Devices within the heart chamber, e.g. splints

Abstract

Various methods and devices are provided for reducing the volume of the ventricles of the heart. In one embodiment, a method for reducing the ventricular volume of a heart chamber is provided including the steps of inserting an anchoring mechanism onto dysfunctional cardiac tissue, deploying one or more anchors into the dysfunctional cardiac tissue, raising the dysfunctional cardiac tissue using the anchors, and securing the anchors to hold the dysfunctional cardiac tissue in place. Further, a device for reducing the volume of the ventricles of a heart chamber is provided where the device has one or more clips for placement on dysfunctional cardiac tissue of a heart, one or more anchors for deployment and securement into the dysfunctional cardiac tissue, and a lifting mechanism for raising the one or more anchors and the dysfunctional cardiac tissue.

Claims

1. A method for reducing a volume of a heart, the method comprising:

from a posterior approach, inserting a curved hollow tube through a posterior left ventricle wall into a left ventricle and through a septum into a right ventricle so that a curved lumen of the hollow tube extends from outside the heart and posterior of the heart, through the left ventricle wall, and then curves through the septum and opens into the right ventricle;

deploying an anchor connected to a ratchet mechanism through the hollow tube by advancing the anchor within the curved lumen from outside the heart, through the left ventricle wall and the septum, and into the right ventricle;

removing the hollow tube so that the ratchet mechanism extends from the deployed anchor, through the ventricle wall and the septum, and outside the patient;

securing the anchor against the septum inside the right ventricle by securing a locking mechanism to the ratchet mechanism, and by advancing the locking mechanism along the ratchet mechanism toward the anchor; and

locking the locking mechanism against the left ventricle wall so that a volume of the left ventricle of the heart is reduced.

2. The method of claim 1, wherein when the curved hollow tube is inserted through the posterior left ventricle wall into the left ventricle and through the septum into the right ventricle, the curved hollow tube has substantially the same radius of curvature from the portion of the curved hollow tube traversing the left ventricle wall to the portion of the curved hollow tube traversing the septum.

3. A method for reducing a volume of a heart, the method comprising:

cutting a subxiphoid incision to create an opening to access the ventricles of the heart;

inserting a curved hollow tube through a left ventricle wall into the left ventricle, through a septum, through the right ventricle, and through a right ventricle wall so that a curved lumen of the hollow tube extends from outside the heart through the left ventricle wall, then curves through the septum and right ventricle wall, and opens back outside of the heart;

deploying an anchor connected to a ratchet mechanism through the hollow tube by advancing the anchor within the curved lumen from outside the heart, through the left ventricle wall, the septum, and the right ventricle wall to the outside of the heart;

securing the anchor against an outer surface of the right ventricle wall by securing a locking mechanism to the ratchet mechanism, and by advancing the locking mechanism along the ratchet mechanism toward the anchor; and

locking the locking mechanism against the outer left ventricle wall so that a volume of the left ventricle of the heart is reduced.

4. The method of claim 3, wherein when the curved hollow tube is inserted through the left ventricle wall into the left ventricle, through the septum, through the right ventricle, and through the right ventricle wall, the curved hollow tube has substantially the same radius of curvature from the portion of the curved hollow tube traversing the left ventricle wall to the portion of the curved hollow tube traversing the septum and to the portion of the curved hollow tube traversing the right ventricle wall.

5. A method for reducing a volume of a heart, the method comprising:

from a posterior approach, inserting a curved hollow tube through a posterior left ventricle wall into a left ventricle and through a septum into a right ventricle so that a curved path of the hollow tube extends from outside the heart and posterior of the heart, through the left ventricle wall, and then curves through the septum and opens into the right ventricle;

deploying an anchor connected to a ratchet mechanism using the hollow tube by advancing the anchor along the curved path from outside the heart, through the left ventricle wall and the septum, and into the right ventricle;

removing the hollow tube;

securing the anchor against the septum inside the right ventricle by securing a locking mechanism to the ratchet mechanism, and by advancing the locking mechanism along the ratchet mechanism toward the anchor; and

locking the locking mechanism against the left ventricle wall so that a volume of the left ventricle of the heart is reduced.

6. The method of claim 5, wherein when the curved hollow tube is inserted through the posterior left ventricle wall into the left ventricle and through the septum into the right ventricle, the curved hollow tube has substantially the same radius of curvature from the portion of the curved hollow tube traversing the left ventricle wall to the portion of the curved hollow tube traversing the septum.

7. A method for reducing a volume of a heart, the method comprising:

cutting a subxiphoid incision to create an opening to access the ventricles of the heart;

inserting a curved hollow tube through a left ventricle wall into the left ventricle, through a septum, through the right ventricle, and through a right ventricle wall so that a curved path of the hollow tube extends from outside the heart through the left ventricle wall, then curves through the septum and right ventricle wall, and opens back outside of the heart;

deploying an anchor connected to a ratchet mechanism using the hollow tube by advancing the anchor along the curved path from outside the heart, through the left ventricle wall, the septum, and the right ventricle wall to the outside of the heart;

securing the anchor against an outer surface of the right ventricle wall by securing a locking mechanism to the ratchet mechanism, and by advancing the locking mechanism along the ratchet mechanism toward the anchor; and

locking the locking mechanism against the outer left ventricle wall so that a volume of the left ventricle of the heart is reduced.

8. The method of claim 7, wherein when the curved hollow tube is inserted through the left ventricle wall into the left ventricle, through the septum, through the right ventricle and through the right ventricle wall, the curved hollow tube has substantially the same radius of curvature from the portion of the curved hollow tube traversing the left ventricle wall to the portion of the curved hollow tube traversing the septum and to the portion of the curved hollow tube traversing the right ventricle wall.