Handheld electromechanical surgical system

AU2025201075B2Pending Publication Date: 2026-08-13COVIDIEN LP
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Patent Information

Authority / Receiving Office
AU · AU
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-02-14
Publication Date
2026-08-13

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Abstract

A handheld electromechanical surgical system configured for selective connection with a surgical reload in order to actuate the surgical reload to perform at least one function, the surgical reload including an annular staple pusher for firing an annular array of staples thereof, and a circular knife carrier for translating an annular knife independently of the staple pusher; the surgical system comprising: a handheld electromechanical surgical device including: a device housing (10); and at least one rotatable drive shaft supported in and projecting from the device housing (10); and an adapter assembly (200) selectively connectable between the housing of the surgical device and the surgical reload, the adapter assembly (200) comprising: an adapter housing configured and adapted for connection with the surgical device and to be in operative communication with each rotatable drive shaft of the surgical device; an outer tube having a proximal end supported by the adapter housing and a distal end configured and adapted for connection with the surgical reload, wherein the distal end of the outer tube is in operative communication with each of the annular staple pusher and the circular knife carrier of the surgical reload; a trocar assembly (270) supported within the outer tube, the trocar assembly including a trocar member threadably supported on a distal end of a trocar drive screw; and a first force / rotation transmitting / converting assembly (240) for interconnecting a respective one drive shaft of the surgical device and the trocar drive screw of the trocar assembly, wherein the first force / rotation transmitting / converting assembly (240) includes: a first proximal rotation receiving member that is connectable to a respective rotatable drive shaft of the surgical device; and a first distal force transmitting member that is connected to the trocar drive screw of the trocar assembly, the first distal force transmitting member being non-rotatably connected to the first proximal rotation receiving member; at least a second force / rotation transmitting / converting assembly (250) for interconnecting a respective one drive shaft of the surgical device and a respective one of the annular staple pusher and the circular knife carrier of the surgical reload, wherein: the second force / rotation transmitting / converting assembly (250) includes: a second proximal rotation receiving member that is connectable to a respective rotatable drive shaft of the surgical device; and a second distal force transmitting member that is connectable to the respective one of the annular staple pusher and the circular knife carrier of the surgical reload, the second distal force transmitting member being connected to the second proximal rotation receiving member in such a manner whereby rotation of the second proximal rotation receiving member is converted to axial translation of the second distal force transmitting member, and in turn, axial translation of the respective one of the annular staple pusher and the circular knife carrier of the surgical reload. 14689368_1:hxa 20 25 20 10 75 14 F eb 2 02 5 H A N D H E L D E L E C T R O M E C H A N I C A L S U R G I C A L S Y S T E M 1 4 F e b 2 0 2 5 A B S T R A C T 2 0 2 5 2 0 1 0 7 5
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Claims

1. A powered surgical device comprising:an end effector including an annular reload and an anvil movable relative to the annular reload;a motor for providing rotational input for actuating at least one of the anvil or the annular reload;an adapter having a distal end portion for coupling to the anvil and the annular reload and a proximal end portion for coupling to the motor, the adapter including:an inner housing;an outer housing disposed over the inner housing;an outer tube extending from the outer housing;a transmission assembly disposed inside the inner housing and the outer tube, the transmission assembly for converting the rotational input into axial translation output for actuating at least one of the anvil or the annular reload; anda rotation assembly coupled to the outer housing and movable from a locked configuration to an unlocked configuration, wherein in the locked configuration the rotation assembly engages the inner housing thereby preventing rotation of the outer housing and the outer tube relative to the inner housing and in the unlocked configuration the rotation assembly is disengaged from the inner housing allowing for rotation of the outer housing and the outer tube relative to the inner housing.

2. The powered surgical device according to claim 1, wherein the outer tube has a curved shape defining a curved path.

3. The powered surgical device according to claim 2, wherein the transmission assembly is configured to move along the curved path.

4. The powered surgical device according to claim 1, wherein the rotation assembly includes a lock button operably supported on the outer housing.

5. The powered surgical device according to claim 4, wherein the lock button is movable between a first button position and a second button position, wherein while the lock button is in the first button position the rotation assembly is in the locked configuration and while the lock button is in the second button position the rotation assembly is in the unlocked configuration.2025201075   14 Feb 20256. The powered surgical device according to claim 5, wherein the lock button includes a biasing member for biasing the lock button to the first button position.

7. The powered surgical device according to claim 5, wherein the inner housing includes a plurality of cutouts.

8. The powered surgical device according to claim 7, wherein the rotation assembly further includes a lock shoe disposed between the inner housing and the outer housing.

9. The powered surgical device according to claim 8, wherein the lock shoe is movable between a first lock position and a second lock position in response to movement of the lock button between the first button position and the second button position, wherein in the first lock position the lock shoe is disposed inside one cutout of the plurality of cutouts and in the second lock position the lock shoe is disposed outside of the plurality of cutouts.

10. The powered surgical device according to claim 9, wherein the lock shoe is axially slidable relative to the lock button.

11. An adapter for coupling an end effector to a handle assembly, the adapter comprising:an inner housing;an outer housing disposed over the inner housing;an outer tube extending from the outer housing; anda rotation assembly coupled to the outer housing and movable from a locked configuration to an unlocked configuration, wherein in the locked configuration the rotation assembly engages the inner housing thereby preventing rotation of the outer housing and the outer tube relative to the inner housing and in the unlocked configuration the rotation assembly is disengaged from the inner housing allowing for rotation of the outer housing and the outer tube relative to the inner housing.

12. The adapter according to claim 11, further comprising a transmission assembly for converting rotational input into axial translation output.2025201075   14 Feb 202513. The adapter according to claim 12, wherein the outer tube has a curved shape defining a curved path.

14. The adapter according to claim 13, wherein the transmission assembly is configured to move along the curved path.

15. The adapter according to claim 11, wherein the rotation assembly includes a lock button operably supported on the outer housing.

16. The adapter according to claim 15, wherein the lock button is movable between a first button position and a second button position, wherein while the lock button is in the first button position the rotation assembly is in the locked configuration and while the lock button is in the second button position the rotation assembly is in the unlocked configuration.

17. The adapter according to claim 16, wherein the lock button includes a biasing member for biasing the lock button to the first button position.

18. The adapter according to claim 16, wherein the inner housing includes a plurality of cutouts.

19. The adapter according to claim 18, wherein the rotation assembly further includes a lock shoe disposed between the inner housing and the outer housing.

20. The adapter according to claim 19, wherein the lock shoe is movable between a first lock position and a second lock position in response to movement of the lock button between the first button position and the second button position, wherein in the first lock position the lock shoe is disposed inside one cutout of the plurality of cutouts and in the second lock position the lock shoe is disposed outside of the plurality of cutouts.

21. The adapter according to claim 20, wherein the lock shoe is axially slidable relative to the lock button.Covidien LPPatent Attorneys for the Applicant / Nominated PersonSPRUSON & FERGUSON

Citation Information

Patent Citations

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