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Single Use Endocutter Proximal Lockout Mechanism

IP.com Disclosure Number: IPCOM000243022D
Publication Date: 2015-Sep-09
Document File: 3 page(s) / 382K

Publishing Venue

The IP.com Prior Art Database

Abstract

This submission describes a shaft lockout concept for a single use Endocutter shaft. A single use shaft allows for creation of a lockout mechanism to only prevent refire of a fired shaft. This spent shaft lockout can be driven by the firing system mechanically (firing rod position) or electronically (firing count, system state change) in the proximal portion of the shaft.

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Single Use Endocutter Proximal Lockout Mechanism


Summary
This submission describes a shaft lockout concept for a single use Endocutter shaft. A single use shaft allows for creation of a lockout mechanism to only prevent refire of a fired shaft. This spent shaft lockout can be driven by the firing system mechanically (firing rod position) or electronically (firing count, system state change) in the proximal portion of the shaft.

Description

Spent cartridge and no cartridge lockout are two functions which are present in existing endocutter devices. For a preloaded single use shaft, no-cartridge lockout is not necessary as a new shaft can be considered loaded and unused. Spent cartridge lockout is still needed but can be implemented in a simpler fashion in the proximal section of the device by a state change after a single firing. This can be done mechanically or electronically.

One mechanical example shown in Figure 1 uses a change in end position for the firing rod after firing to engage lockout. This would be possible via a mechanical latch that would prevent the firing rod from moving forward as shown in Figure 2. The latch only engages when the firing rod is returned back to a more proximal "latched" position if a firing threshold is met. There are many mechanical ways to implement this with a position dependent lock, where position is controlled by the logic state of firing being completed.

An electronic example could include a "firing count" parameter logged...