# US 12,599,381 B2 · Surgical stapler with removable power pack

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- Number: US 12,599,381 B2
- Document ID: US12599381B2
- Status: Granted
- Kind: B2
- Application number: 18/935,845
- Filed: 2024-11-04
- Published: 2025-04-24
- Granted: 2026-04-14
- Earliest claimed: 2019-07-19
- Assignees: RevMedica, Inc.
- Applicants: RevMedica, Inc.
- Inventors: C. Robert Satti, III; Thomas G. Wenchell, Jr.; Peter Nielsen
- Web page: https://patentgrep.com/patent/US12599381B2

## CPC

- A61B 17/072: for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B 17/068: Surgical staplers {, e.g. containing multiple staples or clamps}({staplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105;} for performing anastomosis A61B17/115; {staplers in general B25C5/00})
- A61B 17/1285: {for minimally invasive surgery}
- A61B 17/2909: {Handles}
- A61B 17/07207: {the staples being applied sequentially}
- A61B 17/1155: {Circular staplers comprising a plurality of staples}
- A61B 17/29: Forceps for use in minimally invasive surgery
- A61B 17/3201: Scissors (for biopsy A61B10/02)
- A61B 34/30: Surgical robots
- A61B 2017/00017: {Electrical control of surgical instruments}
- A61B 2017/00022: {Sensing or detecting at the treatment site}
- A61B 2017/00115: {with audible or visual output}
- A61B 2017/00398: {using powered actuators, e.g. stepper motors, solenoids}
- A61B 2017/00424: {ergonomic, e.g. fitting in fist}
- A61B 2017/00473: {Distal part, e.g. tip or head (A61B2017/00464 takes precedence)}
- A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)}
- A61B 2017/00734: {battery operated}
- A61B 2017/0647: {having one single leg, e.g. tacks}
- A61B 2017/07214: {Stapler heads}
- A61B 2017/07257: {characterised by its anvil}
- A61B 2017/07271: {characterised by its cartridge}
- A61B 2017/2927: {the angular position of the head being adjustable with respect to the shaft}
- A61B 2017/2932: {Transmission of forces to jaw members}
- A61B 2017/2936: {Pins in guiding slots}
- A61B 2017/320052: {Guides for cutting instruments}
- A61B 2034/2059: {Mechanical position encoders}
- A61B 2090/064: {for measuring force, pressure or mechanical tension}
- A61B 2090/0807: {Indication means}
- A61B 2090/0811: {for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument}
- A61B 2090/0813: {Accessories designed for easy sterilising, i.e. re-usable}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical fastener applier having a housing containing a compartment therein, an elongated member extending distally from the housing and first and second jaws. A firing mechanism is positioned within the housing movable to a second position to effect firing of fasteners. A power pack is removably loadable into the compartment, the power pack having one or both of a) a first motor and a first engagement member removably engageable with the firing mechanism when the power pack is loaded into the compartment to effect movement of the firing mechanism; and b) a second motor and a second engagement member removably engageable with an articulating mechanism in the housing of the surgical fastener applier to effect movement of an articulation mechanism to effect articulation. One or both of a firing position and an articulation position are tracked during the surgical procedure. Sensors are provided to detect select parameters and instrument functions.

## Claims

### Claim 1

A surgical fastener applier comprising:
a power pack having a motor, a drive mechanism driven by the motor, a first switch and a second switch;
a housing containing a compartment therein, the compartment having an openable cover to provide access to the compartment for removably loading the power pack;
an elongated member extending distally from the housing;
a first jaw and a second jaw adjacent a distal portion of the elongated member, at least the first jaw movable with respect to the second jaw to clamp tissue between the first and second jaws;
a fastener firing mechanism positioned within the housing, the firing mechanism movable by a linear output motion of the drive mechanism of the power pack loaded into the compartment, the firing mechanism movable be tween a first position and a second position, wherein in the second position, the firing mechanism effects firing of fasteners into the tissue clamped between the first and second jaws, the firing mechanism actuated by the first switch; and
an articulation mechanism movable between a first position and a second position to angle the first and second jaws to an angled position with respect to a longitudinal axis of the elongated member, the articulation mechanism actuated by the second switch;
wherein the first switch cannot be activated if the second switch is activated and the second switch cannot be activated if the first switch is activated.

### Claim 2 (depends on 1)

The surgical fastener applier of claim 1, wherein the drive mechanism is engageable with the firing mechanism, and the power pack cannot be removed from the compartment if the drive mechanism is not in a home position.

### Claim 3 (depends on 1)

The surgical fastener applier of claim 1, wherein the power pack has a second drive mechanism engageable with the articulation mechanism, and the power pack cannot be removed from the compartment if the articulation mechanism is not in a home position.

### Claim 4 (depends on 1)

The surgical fastener applier of claim 1, wherein opening of the jaws disables a firing mode.

### Claim 5 (depends on 1)

The surgical fastener applier of claim 1, wherein closing of the jaws disables an articulation mode.

### Claim 6 (depends on 1)

The surgical fastener applier of claim 1, wherein the power pack can be removed from the compartment only if first and second engagement members of the power pack are in a home position, the first engagement member engageable with the fastener firing mechanism and the second engagement member engageable with the articulation mechanism.

### Claim 7 (depends on 1)

The surgical fastener applier of claim 1, further comprising an interchangeable battery pack removably connectable with the power pack for powering the motor.

### Claim 8 (depends on 1)

The surgical fastener applier of claim 1, wherein the cover includes a first seal to seal about the cover in a closed position of the cover to seal the power pack positioned within the compartment.

### Claim 9 (depends on 1)

The surgical fastener applier of claim 1, wherein neither the first switch nor the second switch can be activated if the cover is not in a closed position.

### Claim 10 (depends on 1)

The surgical fastener applier of claim 1, further comprising a manually actuable handle, the handle movable from a first position to a second position to effect clamping of tissue between the first and second jaws, wherein movement of the handle to the second position enables firing.

### Claim 11 (depends on 10)

The surgical fastener applier of claim 10, wherein in the first position of the handle, the first switch is enabled and the second switch to enable articulation is disabled.

### Claim 12 (depends on 10)

The surgical fastener applier of claim 10, wherein the power pack has a removable and replaceable battery.

### Claim 13

A surgical fastener applier comprising:
a power pack having a motor, a first switch and a second switch
a housing containing a compartment therein, the compartment having an openable cover to provide access to the compartment for removably loading the power pack, the power pack loadable to engage a fastener firing mechanism and an articulation mechanism positioned within the housing;
an elongated member extending distally from the housing;
a first jaw and a second jaw adjacent a distal portion of the elongated member, at least the first jaw movable with respect to the second jaw to clamp tissue between the first and second jaws;
the fastener firing mechanism positioned within the housing movable by the motor of the power pack loaded into the compartment, the firing mechanism movable axially between a first position and a second position, wherein in the second position, the firing mechanism effects firing of fasteners into the tissue clamped between the first and second jaws, the firing mechanism actuated by the first switch; and
the articulation mechanism movable between a first position and a second position to angle the first and second jaws to an angled position with respect to a longitudinal axis of the elongated member, the articulation mechanism actuated by the second switch;
wherein the first switch is not activatable if the second switch is activatable and the second switch is not activatable if the first switch is activatable.

### Claim 14 (depends on 13)

The surgical fastener applier of claim 13, further comprising a manually actuable handle, the handle movable from a first position to a second position to effect clamping tissue of between the first and second jaws, wherein movement of the handle to the second position enables firing.

### Claim 15 (depends on 13)

The surgical fastener applier of claim 13, wherein neither the first switch nor the second switch can be activated if the cover is not in a closed position.

### Claim 16 (depends on 15)

The surgical fastener applier of claim 15, wherein opening of the jaws disables a firing mode.

### Claim 17 (depends on 16)

The surgical fastener applier of claim 16, wherein closing of the jaws disables an articulation mode.

### Claim 18 (depends on 17)

The surgical fastener applier of claim 17, further comprising a manually actuable handle, the handle movable from a first position to a second position to effect closure of the jaws to the closed position, wherein movement of the handle to the second position enables firing.

### Claim 19 (depends on 13)

The surgical fastener applier of claim 13, wherein the power pack loadable in the compartment has a removable and replaceable battery.