Sealing multiple surgical instruments

Patent metadata

Field	Value
Publication number	US-9888941-B2
Application number	US-201414212188-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Mar 15, 2013
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

In accordance with aspects of the present invention, a door mechanism is provided. A door mechanism according to some embodiments of the present invention includes a door that includes a sealing part, an arm connected to the sealing part, and a pivot part connected to the arm, the door rotating around a pivot axis at the pivot part; and a lever, the lever engaging the door at the pivot part such that the lever opens the door when engaged but is not affected when the door is opened without the lever.

First claim

The invention claimed is:

1. A surgical access device including a lever-actuated door mechanism, the device comprising:
a door that includes a sealing part, an arm connected to the sealing part, and a pivot part connected to the arm, the door being positioned to rotate around a door pivot axis at the pivot part; and
a lever, the lever being configured and positioned to rotate around a lever pivot axis and to engage the door at the pivot part such that rotation of the lever in a first direction engages the pivot part to turn the pivot part and open the door, and wherein insertion of an instrument in a distal direction against the door rotates the pivot part in a second direction without the pivot part engaging the lever.

2. The surgical access device of claim 1 , wherein the door and the lever are mounted within a lower, distal part of an instrument guide, the sealing part sealing against an instrument seal that is mounted to the instrument guide.

3. The surgical access device of claim 2 , wherein the instrument guide includes an instrument channel sized and shaped to receive an instrument shaft, and the instrument seal is mounted at an oblique angle with respect to a cross section of the instrument channel, wherein the instrument seal seals against the sealing part of the door when the door is closed, and the instrument shaft is not inserted through the instrument channel, and the instrument seal seals against the instrument shaft when the instrument shaft is inserted through the instrument channel.

4. The surgical access device of claim 3 , wherein an angle of opening of the door is between 20 and 25 degrees.

5. The surgical access device of claim 2 , further including a spring that engages the pivot part and holds the sealing part against the instrument seal.

6. The surgical access device of claim 1 , wherein rotation of the lever in the first direction engages a first engagement surface on the lever with a second engagement surface on the pivot part to turn the pivot part and open the door, and rotation of the lever in the second direction moves the lever without moving the pivot part.

7. The surgical access device of claim 1 , wherein the lever pivot axis is aligned with the door pivot axis.

8. The surgical access device of claim 1 , wherein the door and the lever are mounted within an instrument guide comprising a channel, and wherein the arm extends distally along the channel when the door is closed.

9. The surgical access device of claim 8 , wherein the arm extends distally and away from the channel when the door is open and the arm extends distally and toward the channel when the door is closed.

10. A surgical access device including a lever-actuated door mechanism, the device comprising:
an instrument guide, the instrument guide having inner portions defining a channel in the instrument guide;
a pivot part rotatably coupled to the instrument guide and defining a pivot axis, the pivot part having a first pivot part engagement surface and a second pivot part surface angularly offset from the first pivot part engagement surface by a first angle;
a door arm coupled to the instrument guide, the door arm being coupled to the pivot part and rotatable about the pivot axis;
a sealing part coupled to the door arm, the sealing part being configured to seal the channel in the instrument guide when the door arm is in a closed position; and
a door actuator including a first portion coupled to the instrument guide and a second portion coupled to the first portion of the door actuator:
the first portion including a first actuator engagement surface and a second actuator surface angularly offset from the first actuator engagement surface by a second angle, the first actuator engagement surface being configured to engage with the first pivot part engagement surface, the second angle being different than the first angle, the difference between the first angle and the second angle defining a third angle, the pivot part being rotatable through the third angle without engaging the first portion of the door actuator;
wherein when the second door actuator portion is actuated from a neutral position to an actuated position, the first actuator engagement surface is engaged against the first pivot part engagement surface, and the door arm and sealing part are rotated around the pivot axis to an open position.

11. The surgical access device of claim 10 , further comprising a spring coupled to the instrument guide and the door arm, the door arm and the sealing part being biased by the spring toward a closed position in which the sealing part seals against a portion of the channel.

12. The surgical access device of claim 10 , wherein the door actuator comprises a lever.

13. The surgical access device of claim 10 , wherein the door actuator comprises a servo actuator.

14. The surgical access device of claim 13 , further comprising a teleoperated control system configured to control the servo actuator.

15. The surgical access device of claim 10 , further comprising an instrument seal coupled to the channel, the instrument seal being at an oblique angle relative to a longitudinal axis of the channel, the sealing part being configured to seal against the channel by sealing against the instrument seal when the door arm is in a closed position.

16. A surgical access device comprising:
an instrument guide in which a channel is defined;
a seal having a seal opening defined in the seal, the seal opening being configured to seal against a surgical instrument shaft that extends through the seal opening and into the channel;
a door mechanism including a door coupled to a pivot part, the door being configured to pivot around the pivot part between a closed position in which the door seals the seal opening and an open position in which the door allows the instrument shaft to extend through the seal opening; and
a lever mounted at the pivot part, the lever being configured to pivot at the pivot part between a first position and a second position, the lever and the door being in mechanical communication such that as the lever is actuated from the first position to the second position, the door pivots from the closed position to the open position, and such that inserting an instrument against the door to rotate open the door from the closed position to the open position does not actuate the lever.

17. The surgical access device of claim 16 , wherein the instrument guide includes a funnel portion sized and shaped to guide the surgical instrument shaft toward the opening of the seal.

18. The surgical access device of claim 17 , wherein the opening of the seal is at an oblique angle with reference to the channel, and wherein the instrument seal seals against the door when the instrument shaft is not inserted through the channel, and the instrument seal seals against the instrument shaft when the instrument shaft is inserted through the channel.

19. The surgical access device of claim 17 , wherein the lever is pivotably coupled to the instrument guide, and the door is pivotably coupled to the instrument guide.

20. The surgical access device of claim 16 , wherein the lever includes a cavity, the cavity having a first engagement surface; and
the pivot part includes a dog positioned in the cavity and being rotatable in the cavity, the dog having a second engagement surface configured to engage with the first engagement surface;
the cavity being sized and shaped such that rotation of the lever in a first direction engages the first engagement surface with the

Assignees

• Intuitive Surgical Operations

Inventors

• Lambrecht Bram Gilbert Antoon
• Park William J

Classifications

• A61B2017/3445

  used as instrument channel for multiple instruments · CPC title

• A61B17/3462 Primary

  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 title

• A61B2017/3466

  for simultaneous sealing of multiple instruments · CPC title

• A61B17/3498

  Valves therefor, e.g. flapper valves, slide valves (haemostasis valves A61M39/06; check valves A61M39/24) · CPC title

• A61B34/30

  Surgical robots · CPC title