IRIS SEAL FOR SINGLE INCISION SURGERY

• US 20090326463A1
• Filed: 05/18/2009
• Published: 12/31/2009
• Est. Priority Date: 06/25/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Ross, Adam J.
• Granted Patent: US 7,901,380 B2
• Time in Patent Office: Days
• US Class Current: 604/167.01
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24

Abstract

The present disclosure is directed to a surgical portal apparatus for use during a minimally invasive procedure. In one aspect, the apparatus includes a housing and a portal member extending distally from the housing, defining a longitudinal axis. The apparatus also has an iris seal including a plurality of leaf members, disposed within the housing. The leaf members are adapted for pivoting relative to the housing, to control the dimensioning of a passage in response to the insertion of a surgical object. The leaf members are not directly linked to each other to provide for off-axis movement of the surgical object. The apparatus further includes an actuation mechanism, including a motor and a sensor, operatively connected to the leaf members and adopted for movement upon the introduction of the surgical object.

Claims

1. A surgical portal apparatus comprising:

a housing;

a portal member extending from the housing, the portal member dimensioned for positioning within tissue, the portal member including a longitudinal opening for permitting passage of a surgical object; and

an iris seal disposed within the housing and defining an opening therethrough and being adapted to establish a substantial sealing relationship with the surgical object introduced within the opening, the iris seal including a plurality of leaf members adapted for movement to control a dimensioning of the opening in response to introduction of the surgical object.

2. A surgical portal apparatus as defined in claim 1, wherein the leaf members of the iris seal are pivotally mounted relative to the housing, and adapted for pivotal movement between a first relative position and a second relative position.

3. A surgical portal apparatus as defined in claim 2, including an actuation mechanism associated with the leaf members, the actuation mechanism actuable in response to introduction of the surgical object to cause the leaf members to move between the first relative position and the second relative position.

4. A surgical portal apparatus as defined in claim 3, wherein the actuation mechanism includes a motor.

5. A surgical portal apparatus as defined in claim 4, further comprising resistive circuitry associated with the motor and adapted to detect an increase of load on the motor and to thereby releasably secure the leaf members in the second relative position.

6. A surgical portal apparatus as defined in claim 5, further including a switch positioned within the housing, the switch adapted to be engaged by the surgical object during introduction of the surgical object within the housing to activate the motor and thereby cause movement of the leaf members of the iris seal from the first relative position to the second relative position.

7. A surgical portal apparatus as defined in claim 6, wherein the switch is disposed proximal of the seal.

8. A surgical portal apparatus as defined in claim 7, including a delay circuitry associated with the switch, the delay circuitry providing a predetermined period of time prior to the leaf members moving to the second relative position to allow the surgical object to pass through the iris seal.

9. A surgical portal apparatus as defined in claim 6, wherein the switch is located distal to the iris seal.

10. A surgical portal apparatus as defined in claim 3, further including a manual switch mounted to the housing and operatively connected to the leaf members of the iris seal, the manual switch dimensioned for engagement by a clinician and manipulated to move the leaf members between the first and second relative positions.

11. A surgical portal apparatus comprising:

a housing;

a portal member extending from the housing, the portal member dimensioned for positioning within tissue, the portal member includes a longitudinal opening for permitting passage of a surgical object; and

an iris seal disposed within the housing, wherein the iris seal comprises a plurality of leaf members adapted for movement to control a dimensioning of a passage extending through the leaf members.

12. A surgical portal apparatus as defined in claim 11, wherein the leaf member are moveable between a first position wherein the passage is open and a second position where the passage is substantially closed.

13. A surgical portal apparatus as defined in claim 11, wherein the leaf members are adapted to move in response to introduction of the surgical object, the leaf members being dimensioned and configured to establish a substantial sealing relationship with the surgical object.

14. A surgical portal apparatus as defined in claim 11, including a manual actuator operatively connected to the leaf members, the manual actuator being manipulable by a user to move the leaf members between the first relative position and the second relative position.