LOADING UNIT DETECTION ASSEMBLY AND SURGICAL DEVICE FOR USE THEREWITH

• US 20130324979A1
• Filed: 05/03/2013
• Published: 12/05/2013
• Est. Priority Date: 06/01/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Nicholas, David, Beardsley, John, Pribanic, Russell, Zemlok, Michael
• Granted Patent: US 10,080,563 B2
• Time in Patent Office: Days
• US Class Current: 606/1
• 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 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/00831 Material properties
• CPC Class Codes: A61B 2017/00902 transparent or translucent
• CPC Class Codes: A61B 2017/2948 Sealing means, e.g. for sealing the interior from fluid entry
• CPC Class Codes: A61B 2090/0808 for indicating correct assembly of components, e.g. of the surgical apparatus
• CPC Class Codes: A61B 90/90 Identification means for patients or instruments, e.g. tags

Abstract

The present disclosure relates to hand held powered surgical devices, loading unit detection assemblies, surgical adapters and/or adapter assemblies for use between and for interconnecting the powered surgical device or handle assembly and an end effector for clamping, cutting, stapling and/or sealing tissue.

Claims

1. A surgical device, comprising:

a device housing defining a connecting portion for selectively connecting with an adapter assembly;

at least one drive motor supported in the device housing and being configured to rotate at least one drive shaft;

a battery disposed in electrical communication with the at least one drive motor;

a circuit board disposed within the housing for controlling power delivered from the battery to the at least one drive motor;

a loading unit configured to perform at least one function;

an adapter assembly for selectively interconnecting the loading unit and the device housing; and

a loading unit detection assembly disposed in mechanical cooperation with the adapter assembly, the loading unit detection assembly comprising;

a detection link configured to be engaged by the loading unit, the detection link being longitudinally translatable with respect to the loading unit;

a switch pin disposed in mechanical cooperation with the detection link, such that longitudinal translation of the detection link results in a corresponding longitudinal translation of the switch pin; and

a switch button disposed in mechanical cooperation with the adapter assembly;

wherein a predetermined amount of mechanical engagement between the loading unit and the loading unit detection assembly causes proximal translation of the detection link and causes the switch pin to move proximally into contact with the switch button, and wherein a predetermined amount of force exerted by the switch pin against the switch button activates the switch button, which electronically communicates with a portion of the device housing to permit actuation of the at least one drive motor.

2. The surgical device of claim 1, wherein a distal end of the detection link includes a camming surface for engaging a retaining lug of the loading unit.

3. The surgical device of claim 1, further comprising a switch link disposed between the switch pin and the detection link, the switch pin being longitudinally translatable with respect to the switch link.

4. The surgical device of claim 3, wherein the switch link is rotatable with respect to the detection link.

5. The surgical device of claim 1, wherein the switch button is at least partially housed by a switch housing.

6. The surgical device of claim 3, further comprising a first biasing element disposed coaxially with switch pin, the first biasing element being disposed between a proximal portion of the switch link and an enlarged diameter portion of the switch pin.

7. The surgical device of claim 6, wherein the switch button is at least partially housed by a switch housing, and wherein the loading unit detection assembly further comprises a retraction pin disposed at least partially between the switch housing and a portion of the switch link, a second biasing element being disposed coaxially with the retraction pin and configured to exert a distal force against the switch link.

8. The surgical device of claim 7, where the second biasing element is configured to begin to compress prior to the first biasing element beginning to compress.

9. The surgical device of claim 6, wherein the first biasing element does not begin to compress until contact is made between the switch pin and the switch button.

10. The surgical device of claim 7, wherein the retraction pin is longitudinally translatable with respect to the switch link.

11. The surgical device of claim 10, wherein the switch pin is longitudinally translatable with respect to the switch link.

12. A loading unit detection assembly for use with a surgical device configured for selective engagement with a loading unit, the loading unit detection assembly comprising:

a detection link configured to be engaged by a loading unit; and

a switch button disposed proximally of the detection link;

wherein engagement between the loading unit and the loading unit detection assembly causes the detection link to proximally translate with respect to the loading unit and causes the switch button to become engaged, and wherein engagement of the switch button causes an electronic communication with a portion of the surgical device to permit actuation thereof.

13. The loading unit detection assembly of claim 12, further comprising a switch pin disposed in mechanical cooperation with the detection link and adjacent the switch button, and further comprising a switch link disposed between the switch pin and the detection link, the switch pin being longitudinally translatable with respect to the switch link.

14. The loading unit detection assembly of claim 12, wherein a distal end of the detection link includes a camming surface for engaging a retaining lug of the loading unit.

15. The loading unit detection assembly of claim 13, wherein the switch link is rotatable with respect to the detection link.

16. The loading unit detection assembly of claim 13, further comprising a first biasing element disposed coaxially with switch pin, the first biasing element being disposed between a proximal portion of the switch link and an enlarged diameter portion of the switch pin.

17. The loading unit detection assembly of claim 16, wherein the switch button is at least partially housed by a switch housing, and wherein the loading unit detection assembly further comprises a retraction pin disposed at least partially between the switch housing and a portion of the switch link, and further comprising a second biasing element disposed coaxially with the retraction pin and configured to exert a distal force against the switch link.

18. The loading unit detection assembly of claim 17, where the second biasing element is configured to begin to compress prior to the first biasing element beginning to compress.

19. The loading unit detection assembly of claim 16, wherein the first biasing element does not begin to compress until contact is made between the switch pin and the switch button.

20. The loading unit detection assembly of claim 17, wherein the retraction pin is longitudinally translatable with respect to the switch link.