Method and apparatus for temporarily immobilizing a local area tissue

• US 6,015,378 A
• Filed: 10/03/1996
• Issued: 01/18/2000
• Est. Priority Date: 09/20/1995
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Borst, Cornelius, Grundeman, Paul F., Jansen, Erik W. L., Mansvelt Beck, Hendricus J.
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US08/725,371
• Time in Patent Office: 1,202 Days
• Field of Search: 600/37, 600/202, 128/898
• US Class Current: 600/37
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 17/0206 with antagonistic arms as supports for retractor elements
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00703 correcting for movement of heart, e.g. ECG-triggered
• CPC Class Codes: A61B 2017/0243 for immobilizing local areas of the heart, e.g. while it beats
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2018/00291 using suction
• CPC Class Codes: A61B 90/50 Supports for surgical instruments, e.g. articulated arms

Abstract

A method and apparatus for temporarily immobilizing a local area of tissue. In particular, the present invention provides a method and apparatus for temporarily immobilizing a local area of heart tissue to thereby permit surgery on a coronary vessel in that area without significant deterioration of the pumping function of the beating heart. The local area of heart tissue is immobilized to a degree sufficient to permit minimally invasive or micro-surgery on that area of the heart. The present invention features a suction device to accomplish the immobilization. The suction device is coupled to a source of negative pressure. The suction device has a series of suction ports on one surface. Suction through the device causes suction to be maintained at the ports. The device further is shaped to conform to the surface of the heart. Thus, when the device is placed on the surface of the heart and suction is created, the suction through the ports engages the surface of the heart. The suction device is further fixed or immobilized to a stationary object, such as an operating table or a sternal or rib retractor. Thus, the local area of the heart near the suction device is temporarily fixed or immobilized relative to the stationary object while suction is maintained. In such a fashion, the coronary artery may be immobilized even though the heart itself is still beating so that a bypass graft may be performed. In addition the suction device may be used in either a conventional, open-chest environment or in a minimally-invasive environment, e.g. endoscopic.

Claims

1. A method of immobilizing an area of tissue comprising:

contacting at least one primary suction port on a first paddle to a first surface of tissue;

contacting at least one secondary suction port on a second paddle to a second surface of tissue;

creating a suction in at least one primary suction port to cause the first paddle to grasp the first surface of the tissue;

creating a suction in at least one secondary suction port to cause the second paddle to grasp the second surface of the tissue;

moving the first paddle away from the second paddle; and

fixing at least one of the first and second paddles to a stationary object.

2. The method of claim 1 in which the step of fixing at least one of the first and second paddles to a stationary object further comprises fixing at least one paddle to an operating table.

3. The method of claim 1 in which the step of fixing at least one of the first and second paddles to a stationary object further comprises fixing at least one paddle to a retractor.