Surgical access system

Patent metadata

Field	Value
Publication number	US-10828065-B2
Application number	US-201816043907-A
Country	US
Kind code	B2
Filing date	Jul 24, 2018
Priority date	Aug 28, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A surgical access system includes a cannula assembly and an obturator assembly. The obturator assembly provides an insufflation channel or fluid passage for delivery of insufflation fluids directly to an underlying cavity, e.g., the abdominal cavity. The fluid passage is completely confined within the obturator assembly isolated from the cannula assembly and terminates at a location distal of the cannula assembly such that the insufflation fluids released from the fluid passage are directed toward the abdominal cavity and not within the cannula assembly.

First claim

The invention claimed is:

1. A surgical access system, which comprises:
a cannula assembly including a cannula housing and a cannula member extending from the cannula housing, the cannula housing including a first insufflation port extending laterally therefrom, the cannula member defining a longitudinal axis and having proximal and distal ends, the cannula member including a cannula wall defining a cannula lumen; and
an obturator assembly including:
an obturator housing;
an obturator member extending from the obturator housing and at least partially positionable within the cannula lumen, the obturator member including an obturator wall having a penetrating member configured for penetrating tissue, the obturator wall having at least one fluid opening therethrough;
a cap mounted to the obturator housing, the cap and the obturator member defining a fluid passage extending along the longitudinal axis to the penetrating member, the fluid passage isolated from the cannula lumen; and
a second insufflation port mounted to the cap and defining a port channel in fluid communication with the fluid passage such that insufflation fluids introduced within the port channel are conveyed through the fluid passage and exit the at least one fluid opening independent of the cannula lumen.

2. The surgical access system according to claim 1 wherein the penetrating member includes the at least one fluid opening.

3. The surgical access system according to claim 2 wherein the at least one fluid opening of the penetrating member is disposed beyond the distal end of the cannula member when the obturator member is positioned within the cannula lumen.

4. The surgical access system according to claim 2 wherein the at least one fluid opening is defined at least in part by proximal and distal surfaces of the penetrating member, the proximal and distal surfaces obliquely arranged relative to the longitudinal axis and configured to minimize the potential of coring of tissue by the at least one fluid opening during passage through tissue.

5. The surgical access system according to claim 3 wherein at least the penetrating member of the obturator wall includes a transparent material.

6. The surgical access system according to claim 5 wherein the cap includes a cap wall defining a cap lumen, the fluid passage including the cap lumen.

7. The surgical access system according to claim 6 wherein the obturator wall defines an obturator lumen, the fluid passage including the obturator lumen.

8. The surgical access system according to claim 7 wherein the cap lumen and the obturator lumen are configured to receive a surgical instrument.

9. The surgical access system according to claim 8 wherein the cap includes an instrument retention member configured for engaging the surgical instrument, to facilitate retention of the instrument at a predetermined position within the obturator member.

10. The surgical access system according to claim 9 wherein the instrument retention member includes a friction washer configured to frictionally engage the surgical instrument.

11. The surgical access system according to claim 10 wherein the instrument retention member is configured to engage a laparoscope.

12. The surgical access system according to claim 1 wherein the second insufflation port is arranged about a port axis in oblique relation to the longitudinal axis to facilitate directing of the insufflation fluids toward the fluid passage.

13. The surgical access system according to claim 1 wherein the cap is secured to the elongate obturator member and the obturator housing by a connector having mounting legs.

14. A surgical obturator assembly, which comprises:
an obturator housing having a first insufflation port;
an elongate obturator member defining a longitudinal obturator axis and proximal and distal ends, the obturator member distally extending from the obturator housing and being configured for at least partial introduction within a cannula, the obturator member including an obturator wall defining an obturator lumen and having a penetrating member, the penetrating member terminating in a closed penetrating end configured for penetrating tissue, the penetrating member having at least one fluid opening therethrough;
a cap mounted to the obturator housing, the cap including a cap lumen in longitudinal alignment with the obturator lumen, the cap lumen and the obturator lumen configured for reception of a laparoscope, and defining an isolated fluid passage extending along the longitudinal axis to the penetrating member; and
a second insufflation port mounted to the cap proximal of the obturator housing and defining a port channel in fluid communication with the fluid passage such that insufflation fluids introduced within the port channel are conveyed through the fluid passage and exit the at least one fluid opening of the penetrating member.

15. The surgical obturator assembly according to claim 14 wherein at least the penetrating member of the obturator wall includes a transparent material.

16. The surgical obturator assembly according to claim 14 wherein the cap includes a scope retention member configured for engaging the laparoscope to facilitate retention of the laparoscope at a predetermined position within the obturator member.

17. The surgical obturator assembly according to claim 16 wherein the scope retention member is configured to establish a sealing relationship with the laparoscope.

18. The surgical obturator assembly according to claim 14 wherein the at least one fluid opening is disposed in fluid communication with a hollow cavity within the penetrating member, the hollow cavity defined by the closed penetrating end.

19. The surgical obturator assembly according to claim 14 wherein the obturator housing includes a first section and a second section that is separate and discrete from the first section, the first and second sections positioned to capture the cap within the first and second sections.

20. A surgical access system, which comprises:
a cannula assembly including a cannula housing and a cannula member extending from the cannula housing, the cannula housing including a first insufflation port; and
an obturator assembly including:
an obturator housing;
an obturator member extending from the obturator housing, the obturator member including an obturator wall having a penetrating member configured for penetrating tissue, the obturator wall having at least one fluid opening therethrough;
a cap mounted to the obturator housing, the cap and the obturator member defining a fluid passage; and
a second insufflation port mounted to the cap and defining a port channel in fluid communication with the fluid passage such that insufflation fluids introduced within the port channel are conveyed through the fluid passage and exit the at least one fluid opening.

Assignees

• Covidien Lp

Inventors

• Holsten Henry E

Classifications

• A61B17/3474 Primary

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

• A61B2017/3454

  Details of tips · 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

• A61B2017/00902

  transparent or translucent · CPC title

• A61B2017/3433

  with different outer diameters of the cannula · CPC title