Surgical laparoscopic ports for implanting medical systems

Patent metadata

Field	Value
Publication number	US-11039856-B2
Application number	US-201916408123-A
Country	US
Kind code	B2
Filing date	May 9, 2019
Priority date	May 10, 2018
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

The present disclosure relates to laparoscopic surgery, and in particular to laparoscopic ports for facilitating the implant of medical systems such as a neuromodulation system into the body of a patient. Particularly, aspects are directed to a cannula assembly having a cannula housing and a cannula sleeve comprising a sleeve body extending from a distal end of the cannula housing. The cannula sleeve has a semi-rectangular cross section including: (i) a rounded rectangular portion configured to accommodate feeding the neuromodulation system through the cannula assembly, and (ii) a circular portion configured to accommodate insertion of the one or more surgical instruments through the cannula assembly.

First claim

What is claimed is:

1. A cannula assembly comprising:
a cannula housing comprising:
a first portion comprising a proximal end and a distal end,
a first opening at the proximal end of the first portion;
a slot disposed within an interior region adjacent the distal end of the first portion; and

a cannula sleeve comprising:
a sleeve body extending from the distal end of the first portion of the cannula housing, the sleeve body comprising a proximal end and a distal end having a second opening,
a hub attached to the proximal end of the sleeve body to connect the sleeve body to the slot disposed in the first portion of the cannula housing, wherein the slot matches a size and shape of the hub such that the hub sits within the slot for securing the cannula sleeve to the cannula housing,

wherein the sleeve body comprises a semi-rectangular cross section extending from the proximal end of the sleeve body to the distal end of the sleeve body,
wherein the semi-rectangular cross section comprises: (i) a rounded rectangular portion, and (ii) a circular portion,
wherein the circular portion extends beyond the rounded rectangular portion in a direction parallel to a plane of the semi-rectangular cross section, and
wherein the rounded rectangular portion comprises a first side face on a first end and a second side face on an opposing second end, wherein first side face and the second side face are parallel.

2. The cannula assembly of claim 1 , wherein:
a top region of the circular portion extends beyond the rounded rectangular portion in a first direction parallel to the plane of the semi-rectangular cross section and a bottom region of the circular portion extends beyond the rounded rectangular portion in a second direction parallel to the plane of the semi-rectangular cross section; and
the second direction is opposite from the first direction.

3. The cannula assembly of claim 2 , wherein:
the top region of the circular portion is defined by at least a first top face and a second top face meeting at a top apex;
the bottom region of the circular portion is defined by at least a first bottom face and a second bottom face meeting at a bottom apex;
a horizontal region of the rounded rectangular portion is defined by at least a latitudinal width between inner surfaces of the first side face and the second side face;
the top apex is disposed above the horizontal region; and
the bottom apex is disposed below the horizontal region.

4. The cannula assembly of claim 3 , wherein a tangential angle between tangential segments of each of the first top face, the second top face, the first bottom face, and the second bottom face, and a horizontal mid line of the semi-rectangular cross section is an acute angle.

5. The cannula assembly of claim 1 , wherein a horizontal region of the rounded rectangular portion is defined by at least a longitudinal height that is less than a diameter of the circular portion.

6. The cannula assembly of claim 3 , wherein the semi-rectangular cross section further comprises a curved segment between each of the first top face and the first side face, the first bottom face and the first side face, the second top face and the second side face, and the second bottom face and the second side face.

7. The cannula assembly of claim 1 , wherein the distal end of the cannula housing has a third opening, and the cannula housing further comprises a seal located in the interior region between the first opening and the third opening.

8. The cannula assembly of claim 7 , wherein the first opening and the third opening have a semi-rectangular cross section that is different from the semi-rectangular cross section of the sleeve body.

9. The cannula assembly of claim 8 , wherein the semi-rectangular cross section of the first opening and the third opening comprises: a top arced face having a top apex, a bottom arced face having a bottom apex, the first side face joining the top arced face to the bottom arced face, and the second side face joining the top arced face to the bottom arced face.

10. A trocar assembly comprising:
an obturator assembly comprising:
an obturator housing;
an obturator tip; and
an obturator body extending from a distal end of the obturator housing to the obturator tip, the obturator body comprising a first semi-rectangular cross section extending from the obturator housing to the obturator tip; and

a cannula assembly comprising:
a cannula housing; and
a cannula sleeve comprising a sleeve body extending from a distal end of the cannula housing, the sleeve body comprising a second semi-rectangular cross section that is offset from the first semi-rectangular cross section to accommodate insertion of the obturator body within the cannula sleeve,

wherein the second semi-rectangular cross section comprises: (i) a rounded rectangular portion, and (ii) a circular portion, and
wherein the circular portion extends beyond the rounded rectangular portion in a direction parallel to a plane of the second semi-rectangular cross section.

11. The trocar assembly of claim 10 , wherein the first semi-rectangular cross section comprises: a first top face and a second top face meeting at a top apex, a first bottom face and a second bottom face meeting at a bottom apex, a first side face joining the first top face to the first bottom face, and a second side face joining the second top face to the second bottom face.

12. The trocar assembly of claim 10 , wherein a top region of the circular portion extends beyond the rounded rectangular portion in a first direction parallel to the plane of the second semi-rectangular cross section, a bottom region of the circular portion extends beyond the rounded rectangular portion in a second direction parallel to the plane of the second semi-rectangular cross section, and the second direction is opposite from the first direction.

13. The trocar assembly of claim 12 , wherein the top region of the circular portion is defined by at least a first top face and a second top face meeting at a top apex, the bottom region of the circular portion is defined by at least a first bottom face and a second bottom face meeting at a bottom apex, a horizontal region of the rounded rectangular portion is defined by at least a latitudinal width between inner surfaces of a first side face and a second side face, the top apex is disposed above the horizontal region, and the bottom apex is disposed below the horizontal region.

14. The trocar assembly of claim 13 , wherein the sleeve body comprises a distal end having a first opening, a proximal end connected to an interior region of the cannula housing, and the first opening has the second semi-rectangular cross section.

15. The trocar assembly of claim 14 , wherein the cannula housing comprises: a distal end having a second opening, a proximal end having a third opening, and a seal located in the interior region between the second opening and the third opening.

16. The trocar assembly of claim 15 , wherein the second opening and the third opening have a third semi-rectangular cross section.

17. The trocar assembly of claim 16 , wherein the third semi-rectangular cross section of the second opening and the third opening comprises: a top arced face having a top apex, a bottom arced face having a bottom apex, a first side face joining the top arced face to the bottom arced face, and a second side face joining the top arced face to the bottom arced face.

18. A method to deliver a neuromodulation system to a site of a target biological structure, the method comprising:
inserting

Assignees

• Verily Life Sciences Llc

Inventors

• Yaffe Benjamin K
• Sabesan Shivkumar
• Irwin Eric

Classifications

• A61B17/3421 Primary

  Cannulas · CPC title

• A61B17/3468

  for implanting or removing devices, e.g. prostheses, implants, seeds, wires (devices for implanting seeds A61M37/0069) · CPC title

• A61B2017/3433

  with different outer diameters of the cannula · CPC title

• A61B17/3417

  Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating (syringe needles A61M5/32; dilators A61M29/00) · CPC title

• A61B2017/3445

  used as instrument channel for multiple instruments · CPC title