Handheld electromechanical surgical system

• US 10,426,466 B2
• Filed: 06/02/2017
• Issued: 10/01/2019
• Est. Priority Date: 04/22/2015
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Contini, Elizabeth, Valentine, Kelly, Wingardner, Thomas, McCuen, David, Chowaniec, Matthew, Beardsley, John, Pribanic, Russell, Chen, Xingrui, Switalski, Christopher
• Primary Examiner(s): Smith, Scott A
• Application Number:
  US15/612,542
• Publication Number:
  US 20170296176A1
• Time in Patent Office: 851 Days
• Field of Search: 227 19, 2271751, 2271752, 2271753, 2271761, 2271801, 606139, 606213, 606219
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/00123 and automatic shutdown
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00327 with actuating members moving in opposite directions
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/00464 for use with different instruments
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00725 Calibration or performance testing
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61B 2090/0803 Counting the number of times an instrument is used
• CPC Class Codes: A61B 2090/0808 for indicating correct assembly of components, e.g. of the surgical apparatus
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable

Abstract

An adapter assembly includes a switch actuator, an actuation bar, and a latch. The switch actuator is movable between a proximal position, in which the switch actuator actuates a switch, and a distal position. The latch is movable between a first position, in which the latch permits proximal movement of the switch actuator, and a second position, in which the latch prevents proximal movement of the switch actuator. The latch is configured to move from the first position toward the second position in response to the actuation bar moving toward a proximal position.

Claims

1. An adapter assembly, comprising:

an elongate body including a proximal portion configured to couple to a handle assembly and a distal portion configured to couple to a surgical loading unit;

a switch actuator disposed within the elongate body and being movable between a proximal position, in which the switch actuator actuates a switch, and a distal position;

an actuation bar disposed within the elongate body and being movable between a proximal position and a distal position; and

a latch associated with the switch actuator and the actuation bar, the latch being movable between a first position, in which the latch permits proximal movement of the switch actuator, and a second position, in which the latch prevents proximal movement of the switch actuator, wherein the latch is configured to move from the first position toward the second position in response to the actuation bar moving toward the proximal position.

2. The adapter assembly according to claim 1, further comprising:

a distal link disposed distally of the switch actuator; and

a biasing member disposed between the switch actuator and the distal link, wherein proximal movement of the distal link compresses the biasing member between the switch actuator and the distal link when the latch is in the second position.

3. The adapter assembly according to claim 2, wherein the actuation bar is configured to move the latch toward the first position to unlock the switch actuator from the latch during movement of the actuation bar toward the distal position, such that the biasing member moves the switch actuator toward the proximal position to actuate the switch.

4. The adapter assembly according to claim 1, wherein the latch includes a projection extending from a distal portion thereof, and the actuation bar includes a tab extending from a distal portion thereof configured to contact the projection of the latch upon the actuation bar moving toward the distal position.

5. The adapter assembly according to claim 1, wherein the latch has a proximal portion defining a groove therein, and wherein a distal portion of the switch actuator has a tab extending therefrom dimensioned for receipt in the groove of the proximal portion of the latch.

6. The adapter assembly according to claim 1, wherein the latch is resiliently biased toward the second position.

7. The adapter assembly according to claim 1, wherein the latch includes a proximal portion operably associated with the switch actuator, and a distal portion operably associated with the actuation bar.

8. The adapter assembly according to claim 7, wherein the proximal portion of the latch has a mating feature, and a distal portion of the switch actuator has a mating feature configured to detachably matingly engage with the mating feature of the latch when the latch is in the second position and the switch actuator is in the distal position.

9. The adapter assembly according to claim 7, wherein the distal portion of the latch includes a projection, and a distal portion of the actuation bar includes a projection such that the projection of the distal portion of the actuation bar contacts the projection of the distal portion of the latch during movement of the actuation bar toward the distal position to effect pivoting of the latch toward the first position.

10. The adapter assembly according to claim 1, wherein movement of the actuation bar toward the distal position pivots the latch toward the first position to release the switch actuator from the latch.

11. The adapter assembly according to claim 1, further comprising a biasing member coupled to the latch to resiliently bias the latch toward the second position.

12. The adapter assembly according to claim 1, further comprising a release lever fixed to a proximal portion of the actuation bar to provide manual actuation of the actuation bar.

13. The adapter assembly according to claim 1, wherein both the switch actuator and the actuation bar are resiliently biased toward their distal positions.

14. An adapter assembly, comprising:

an elongate body including a proximal portion configured to couple to a handle assembly and a distal portion configured to couple to a surgical loading unit;

a switch actuator disposed within the elongate body and being movable between a proximal position, in which the switch actuator actuates a switch, and a distal position;

a distal link disposed distally of the switch actuator and being operably coupled thereto;

an actuation bar disposed within the elongate body and being movable between a proximal position and a distal position; and

a latch associated with the switch actuator and the actuation bar, the latch being movable between a first position, in which the latch permits proximal movement of the switch actuator, and a second position, in which the latch prevents proximal movement of the switch actuator, wherein the latch is configured to move from the second position toward the first position in response to the actuation bar moving toward the distal position to allow the switch actuator to move relative to the distal link and toward the proximal position to actuate the switch.

15. The adapter assembly according to claim 14, further comprising a biasing member disposed between the switch actuator and the distal link, wherein proximal movement of the distal link compresses the biasing member between the switch actuator and the distal link when the latch is in the second position.

16. The adapter assembly according to claim 15, wherein the actuation bar is configured to move the latch toward the first position to unlock the switch actuator from the latch during movement of the actuation bar toward the distal position, such that the biasing member moves the switch actuator relative to the distal link and toward the proximal position to actuate the switch.

17. The adapter assembly according to claim 14, wherein the latch includes a projection extending from a distal portion thereof, and the actuation bar includes a tab extending from a distal portion thereof configured to contact the projection of the latch to pivot the latch toward the first position upon the actuation bar moving toward the distal position.

18. The adapter assembly according to claim 14, wherein the latch has a proximal portion defining a groove therein, and wherein a distal portion of the switch actuator has a tab extending therefrom dimensioned for receipt in the groove of the proximal portion of the latch.

19. The adapter assembly according to claim 14, wherein the latch is resiliently biased toward the second position.

20. The adapter assembly according to claim 14, wherein the latch includes a proximal portion operably associated with the switch actuator, and a distal portion operably associated with the actuation bar.