Anastomosis method

• US 8,147,501 B2
• Filed: 07/07/2008
• Issued: 04/03/2012
• Est. Priority Date: 08/11/2003
• Status: Expired due to Fees

• Current Assignee: HDH Medical Ltd.
• Original Assignee: HDH Medical Ltd.
• Inventors: Waysbeyn, Igor, Vaysbeyn, Irina
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): Stroud, Jonathan R
• Application Number:
  US12/217,651
• Publication Number:
  US 20090276035A1
• Time in Patent Office: 1,366 Days
• Field of Search: 623/1.11, 623/1.13, 623/1.15, 623/1.23, 606/153, 606/144
• US Class Current: 606/108
• CPC Class Codes: A61B 17/2812 with a single pivotal connection A61B17/29 takes precedence
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/1125 Forceps, specially adapted for performing or assisting anastomosis
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11

Abstract

The present invention provides improved and simplified methods of vascular or hollow organ suture-less anastomosis for attachment of artificial standard vascular graft to the vessel wall in order to reduce the duration of the surgical procedure and its costs.

Claims

1. An anastomosis method for treating a vessel having an aneurysmal or occlusive disease edged by a proximal portion and a distal portion, wherein the portions are suitable for anastomosis, said method comprising:

preparing a vascular graft to a length and a diameter corresponding to dimensions of the proximal and distal portions of the vessel, wherein said vascular graft has at least one distal end and a proximal end;

choosing during the operation which docking head suits an inner dimension of the vessel being treated based upon a size of the inner dimensions;

connecting at least two chosen docking heads, wherein each docking head comprises thin-walled hollow truncated head having a passage that fits an outer diameter of the vascular graft wherein said hollow truncated head and a portion of each docking head is provided with a plurality of outwardly pointing and inclined barbs and the barbed portion is non-expandable, wherein a first docking head is connected to said proximal end and at least one second docking head is connected to said distal end;

providing a delivery tool;

stopping flow of blood in the vessel in the proximal portion and the distal portion;

performing an incision at a diseased portion of the vessel between the proximal portion and the distal portion and cleaning it;

inserting through said incision said proximal end to the proximal portion manually or by a delivery tool;

slightly pulling backwardly said proximal end so as to dock said first docking head in the proximal portion;

inserting through said incision said distal end to at least on said distal portion manually or by a delivery tool;

restoring the fluid flow; and

suturing the incision.

2. The method as claimed in claim 1, wherein the vascular graft is tubular.

3. The method as claimed in claim 1, wherein the vascular graft comprises at least one branch.

4. The method as claimed in claim 1, further comprising slightly pulling backwardly the distal end so as to dock said at least one second docking head in the distal portion.

5. The method as claimed in claim 1, wherein said delivery tool is a tubular catheter comprises a removable wire such as a mandrel capable of being concealed, wherein the wire has a sharp tip and wherein the wire prevents the catheter from sliding backwardly, and an inflatable balloon at its proximal end, wherein said method further comprising:

mounting said vascular graft over said tubular catheter;

perforating the blood vessel by said sharp tip;

concealing said sharp tip;

advancing said tubular catheter to the proximal portion;

inflating said balloon so as to fix said tubular catheter in the proximal portion and stop the fluid flow in one portion;

stopping the fluid flow in at least one of said distal portion;

performing an incision in the vessel wall over the body of the tubular catheter;

removing said wire;

guiding said proximal end of the graft to the proximal portion; and

deflating said balloon and removing said tubular catheter through said vascular graft.

6. The method as claimed in claim 1, wherein the barbs are flexible and are laterally inclined with regard to said hollow truncated portion, and point opposite a direction said docking head travels to guide the vascular graft so as to allow their anchoring into the vessel wall then moving in a backward direction to prevent further backward movement.

7. The method as claimed in claim 1, wherein said thin-walled hollow truncated head has a concave, convex or straight profile that is capable of conforming to a vessel'"'"'s profile when the docking head is coupled to a vessel wall.

8. The method as claimed in claim 1, wherein a smaller diameter end of the substantially conical thin-walled hollow truncated portion is sized to fit an external diameter of the vessel, and wherein a larger diameter end of the substantially conical thin-walled hollow truncated portion is sized approximately 1-10 mm larger than the external diameter of the vessel.

9. The method as claimed in claim 1, wherein said hollow truncated head includes a fixed shape and size portion where the barbs are provided.