Laparoscopic instrument and cannula assembly and related surgical method

• US 8,968,247 B2
• Filed: 06/10/2013
• Issued: 03/03/2015
• Est. Priority Date: 07/21/2004
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Piskun, Gregory, Konik, Anatoly, Rottenberg, Dan
• Primary Examiner(s): GILBERT, ANDREW M
• Application Number:
  US13/913,539
• Publication Number:
  US 20130281783A1
• Time in Patent Office: 631 Days
• Field of Search: 604/164.01, 604/164.04, 604/164.07, 604/164.09, 604/164.11, 604/165.01, 604/165.02, 604/165.04, 604/174, 604/175, 604/256, 604/258, 604/523, 604/528, 604/533, 604/539, 606/108
• US Class Current: 604/164.01
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 17/3421 Cannulas
• 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
• CPC Class Codes: A61B 2017/2904 curved, but rigid
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/292 connection of actuating rod to handle, e.g. ball end in recess
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/3419 Sealing means between cannula and body
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments catheters A61B2017/22072
• CPC Class Codes: A61B 2017/3447 Linked multiple cannulas
• CPC Class Codes: A61B 2017/3449 whereby the instrument channels merge into one single channel
• CPC Class Codes: A61B 2017/3466 for simultaneous sealing of multiple instruments
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2017/3492 against the outside of the body

Abstract

A laparoscopic port assembly includes a cannula unit including three cannulas each extending at an acute angle relative to a base. The cannulas are flexible for receiving respective angulated laparoscopic instruments. The cannula unit is rotatingly received in a port holder for rotation about a longitudinal axis of the holder, the holder being disposable in an opening in a patient'"'"'s skin.

Claims

1. An insert assist member for inserting a port holder in an opening at a surgical site comprising:

a proximal outer portion;

a cylindrical middle portion extending distally from the proximal outer portion; and

a distal tip portion extending distally from the cylindrical middle portion, the distal tip portion defining a rounded tip for insertion through an aperture defined in a port holder configured for insertion in said opening at a surgical site; and

,

wherein the proximal outer portion includes a pair of flange members each configured to define an aperture therethrough, the pair of flange members configured such that the apertures receive and rotatably engage with corresponding projections extending proximally from the port holder.

2. The insert assist member according to claim 1, wherein the pair of flange members are configured such that the apertures disengage from the projections upon rotation of the pair of flange members in a direction opposite the direction in which the apertures engage with the projections.

3. The insert assist member according to claim 2, wherein the insert assist member is removable from the port holder upon rotation of the pair of flange members in the direction opposite the direction in which the apertures engage with the projections.

4. The insert assist member according to claim 1, wherein the apertures are each a dual-lobed slot configured to receive a corresponding projection extending proximally from the port holder.

5. The insert assist member according to claim 1, wherein the pair of flange members each are configured with respective pairs of upturned ears that are manually engageable to reversibly secure the insert assist member to the port holder.

6. A method of inserting a port holder in an opening at a surgical site comprising:

providing an insert assist member configured to at least partially fit within the port holder to form a port holder and insert assist member assembly, the insert assist member having an atraumatic distal tip;

positioning the insert assist member within the port holder such that the atraumatic distal tip extends distally beyond a distal end of the port holder; and

inserting the port holder and insert assist member assembly in the opening; and

,

wherein the port holder includes at least one proximally extending projection and said insert assist member defines an aperture for receiving the at least one projection, the step of positioning the insert assist member within the port holder further including aligning the port holder and insert assist member to place the projection into the aperture.

7. The method of inserting a port holder according to claim 6, further comprising securing the port holder to the surgical site via winding of sutures around posts configured and disposed in the port holder to enable one or more sutures to be wound around the posts to enable the port holder to be fastened to the surgical site.

8. The method of inserting a port holder according to claim 6, further comprising disengaging the insert assist member proximally from the port holder.