Devices and methods for minimally-invasive surgical procedures

Patent metadata

Field	Value
Publication number	US-10993766-B2
Application number	US-201816057532-A
Country	US
Kind code	B2
Filing date	Aug 7, 2018
Priority date	Oct 5, 2007
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

Devices, instruments and tools for minimally invasive surgical procedures. Port devices and methods for hemostatically sealing and providing a port through a tissue wall that interfaces with a fluid containing chamber, by minimally invasive techniques. Assemblies, instruments and methods for minimally invasive access to and through a tissue wall that interfaces with a fluid containing chamber, and for visualizing same. Instruments, assemblies and methods for minimally invasive surgical procedures, including ablation.

First claim

That which is claimed is:

1. An instrument for performing minimally-invasive procedures, comprising:
an endoscopic obturator having an at least partially transparent pointed distal tip configured to receive an inserted endoscope so that the inserted endoscope is disposed to provide a view of tissue via the at least partially transparent pointed distal tip while the at least partially transparent pointed distal tip is driven into the tissue, wherein the endoscopic obturator is provided with one or more mechanical connection members that form a fluid tight seal between the at least partially transparent pointed distal tip and the endoscope;
a trocar cannula surrounding the endoscopic obturator, wherein the endoscopic obturator is removable from the trocar cannula; and
a first expandable member attached to a distal portion of the trocar cannula.

2. The instrument of claim 1 , wherein the expandable member is mounted circumferentially around the trocar cannula.

3. The instrument of claim 1 , further comprising a second expandable member disposed proximal to the first expandable member on the trocar cannula.

4. The instrument of claim 1 , further comprising a hemostatic valve disposed in an annular space between an inner surface of the trocar cannula and an outer surface of the endoscope, wherein the hemostatic valve prevents outflow of fluids when the endoscopic obturator is removed from the trocar cannula.

5. A method for gaining access beyond a tissue wall via a minimally-invasive procedure, the method comprising the steps of:
puncturing the tissue wall with the instrument of claim 1 ;
expanding the first expandable member in an area distal to the tissue wall; and
withdrawing the endoscopic obturator so as to leave the trocar cannula extending through the tissue wall.

6. The method of claim 5 , further comprising the step of:
inserting a tool through the trocar cannula.

7. The method of claim 5 , wherein the tissue wall is an abdominal wall, a thoracic wall, a blood vessel wall, skin, a heart wall, or a wall of an internal organ provided with a cavity.

8. The method of claim 7 , wherein the tissue wall is the heart wall and is near the apex of the heart.

9. The method of claim 5 , further comprising the step of:
expanding a second expandable member proximal to the tissue wall.

Assignees

• Maquet Cardiovascular Llc

Inventors

• Anderson Evan R
• Cantu Alfredo R
• Chin Albert K
• Kendale Amar

Classifications

• A61B17/0057 Primary

  Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect (sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009) · CPC title

• A61M2025/1015

  having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system · CPC title

• A61B18/1492

  having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence) · CPC title

• A61B2018/00577

  Ablation · CPC title

• A61B2017/00637

  for sealing trocar wounds through abdominal wall · CPC title