Cannula assembly

Patent metadata

Field	Value
Publication number	US-2023329752-A1
Application number	US-202318337688-A
Country	US
Kind code	A1
Filing date	Jun 20, 2023
Priority date	Apr 10, 2020
Publication date	Oct 19, 2023
Grant date	—

Abstract

In examples, a method of operating a surgical device comprises disengaging an obturator from a funnel portion of a cannula; removing a shaft portion of the obturator from a cannula lumen of the cannula; disengaging a seal cartridge from the funnel portion of the cannula; and removing the seal cartridge from the funnel portion after removing the shaft portion of the obturator from the cannula lumen.

First claim

What is claimed is:

1 . A method of operating a surgical device, the method comprising:
disengaging an obturator from a funnel portion of a cannula; removing a shaft portion of the obturator from a cannula lumen of the cannula; disengaging a seal cartridge from the funnel portion of the cannula; and removing the seal cartridge from the funnel portion after removing the shaft portion of the obturator from the cannula lumen.

2 . The method of claim 1 , further comprising:
inserting the shaft portion of the obturator into the cannula lumen of the cannula; and engaging at least one latching window defined in the funnel portion of the cannula with an obturator latching member of the obturator.

3 . The method of claim 1 , further comprising engaging an obturator latching member against a brim of the cannula.

4 . The method of claim 1 , further comprising providing positive pressure within the cannula lumen via a gas port.

5 . The method of claim 1 , further comprising maintaining positive pressure within the cannula lumen via a sealing portion of a seal cartridge.

6 . The method of claim 1 , further comprising preventing the removing of the seal cartridge before the disengaging the obturator.

7 . A method of operating a surgical device, comprising:
positioning a seal cartridge within a funnel portion of a cannula; engaging the seal cartridge with the funnel portion of the cannula; inserting a shaft portion of an obturator within a lumen of the cannula; and engaging the obturator with the funnel portion of the cannula.

8 . The method of claim 7 , wherein inserting the shaft portion of the obturator within the lumen of the cannula includes extending the shaft portion of the obturator through an orifice of the seal cartridge.

9 . The method of claim 7 , wherein engaging the seal cartridge with the funnel portion of the cannula includes latching the seal cartridge directly to the cannula to form a seal with the cannula.

10 . The method of claim 7 , further comprising positioning a release button of the seal cartridge with respect to a window of the cannula such that the release button is accessible through the window.

11 . The method of claim 7 , wherein engaging the obturator with the funnel portion of the cannula comprises latching the obturator to a brim of the cannula.

12 . The method of claim 7 , wherein engaging the obturator with the funnel portion of the cannula includes extending a latching mechanism of the obturator through both the seal cartridge and the cannula.

13 . The method of claim 12 , wherein the latching mechanism of the obturator includes a release button, and further comprising actuating the release button to disengage the obturator from the seal cartridge and the cannula.

14 . A method of operating a surgical device, comprising:
positioning a seal cartridge within a funnel portion of a cannula; engaging the seal cartridge with the funnel portion of the cannula by extending a release button of the seal cartridge through a window in a sidewall of the cannula; inserting a shaft portion of an obturator within a lumen of the cannula; and latching the obturator directly to the cannula through the window.

15 . The method of claim 14 , wherein the seal cartridge is configured to latch directly to the cannula.

16 . The method of claim 15 , wherein the obturator is configured to latch directly to a brim of the cannula.

17 . The method of claim 14 , wherein the obturator comprises a release button that circumferentially aligns with the release button of the seal cartridge.

18 . The method of claim 14 , wherein the cannula comprises another window that is approximately 180 degrees apart from the window.

19 . The method of claim 14 , wherein a latching mechanism of the obturator extends through the release button of the seal cartridge to couple to a brim of the cannula.

20 . The method of claim 14 , wherein a top segment of the obturator has a diameter wider than a diameter of the funnel portion of the cannula.

Assignees

• Cilag Gmbh Int

Inventors

• Mozloom Jr Joseph
• Stone Christopher Brock
• Berkowitz Andrew S
• Hall Steven G
• Wiley Jeffrey P
• Chesnes Richard Patrick
• Kirk Jeffery T
• Hill Aren Calder

Classifications

• A61B17/3423 Primary

  Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247) · CPC title

• A61B17/3474

  Insufflating needles, e.g. Veress needles · CPC title

• A61B2017/00367

  Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like · CPC title

• A61B17/3421 Primary

  Cannulas · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title