TORQUE OPTIMIZATION FOR SURGICAL INSTRUMENTS

• US 20150076209A1
• Filed: 11/25/2014
• Published: 03/19/2015
• Est. Priority Date: 08/23/2013
• Status: Abandoned Application

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Shelton, Frederick E. IV, Yates, David C., Schellin, Emily A., Swayze, Jeffrey S.
• Application Number:
  US14/553,293
• Publication Number:
  US 20150076209A1
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• 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 17/072 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2017/00119 alarm; indicating an abnormal situation
• CPC Class Codes: A61B 2017/00123 and automatic shutdown
• CPC Class Codes: A61B 2017/00137 Details of operation mode
• CPC Class Codes: A61B 2017/00154 pulsed
• CPC Class Codes: A61B 2017/0019 Means for setting or varying the pulse width
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00402 Piezo electric actuators
• CPC Class Codes: A61B 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00464 : for use with different instruments with hole for different instruments A61B2017/22072
• 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 2017/00482 : with a code
• CPC Class Codes: A61B 2017/00486 : Adaptors for coupling parts with incompatible geometries
• CPC Class Codes: A61B 2017/00734 : battery operated
• CPC Class Codes: A61B 2017/07214 : Stapler heads
• CPC Class Codes: A61B 2017/07228 : Arrangement of the staples
• CPC Class Codes: A61B 2017/07257 : characterised by its anvil
• CPC Class Codes: A61B 2017/07271 : characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 : characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 : characterised by its cutter
• CPC Class Codes: A61B 2017/2901 : Details of shaft
• CPC Class Codes: A61B 2017/291 : the position of the handle being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2923 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2927 : the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2929 : with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2941 : Toggle linkages
• CPC Class Codes: A61B 2017/2946 : Locking means
• CPC Class Codes: A61B 2034/252 : indicating steps of a surgical procedure
• CPC Class Codes: A61B 2034/254 : being adapted depending on the stage of the surgical procedure
• CPC Class Codes: A61B 2034/256 : having a database of accessory information, e.g. including context sensitive help or scientific articles
• CPC Class Codes: A61B 2090/035 : preventing further rotation
• CPC Class Codes: A61B 2090/037 : with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61B 2090/0803 : Counting the number of times an instrument is used
• CPC Class Codes: A61B 2090/0804 : Counting number of instruments used; Instrument detectors
• CPC Class Codes: A61B 2090/0807 : Indication means
• CPC Class Codes: A61B 2090/0808 : for indicating correct assembly of components, e.g. of the surgical apparatus
• CPC Class Codes: 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
• CPC Class Codes: A61B 2090/0814 : Preventing re-use
• CPC Class Codes: A61B 2090/372 : Details of monitor hardware
• CPC Class Codes: A61B 2560/0214 : of power generation or supply
• CPC Class Codes: A61B 34/10 : Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 34/25 : User interfaces for surgical systems
• CPC Class Codes: A61B 34/30 : Surgical robots
• CPC Class Codes: A61B 34/74 : Manipulators with manual electric input means
• CPC Class Codes: A61B 34/76 : Manipulators having means for providing feel, e.g. force or tactile feedback
• CPC Class Codes: A61B 90/03 : Automatic limiting or abutting means, e.g. for safety
• CPC Class Codes: A61B 90/37 : Surgical systems with images on a monitor during operation
• CPC Class Codes: A61B 90/90 : Identification means for patients or instruments, e.g. tags
• CPC Class Codes: A61B 90/96 : using barcodes
• CPC Class Codes: A61B 90/98 : using electromagnetic means, e.g. transponders
• CPC Class Codes: G06F 21/60 : Protecting data
• CPC Class Codes: G06F 3/016 : Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/0416 : Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04817 : using icons graphical or visual programming using iconic symbols G06F8/34
• CPC Class Codes: G06F 3/0482 : Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/04845 : for image manipulation, e.g. dragging, rotation, expansion or change of colour
• CPC Class Codes: G06F 3/0488 : using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06T 11/60 : Editing figures and text; Combining figures or text
• CPC Class Codes: G09G 5/14 : Display of multiple viewports
• CPC Class Codes: G16H 20/40 : relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16Z 99/00 : Subject matter not provided for in other main groups of this subclass
• CPC Class Codes: H01M 10/425 : Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/48 : Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 2220/30 : Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H02J 2310/23 : The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 7/00 : Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0068 : Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/342 : The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: H02J 9/061 : for DC powered loads
• CPC Class Codes: H03K 2217/96062 : with tactile or haptic feedback
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries

Abstract

A control system having speed management control. The control system can be in signal communication with a battery, and the battery can be coupled to a motor. The speed management control can include a pulse width modulation circuit, which can control the duration of pulses supplied from the battery to the motor. The motor can include a primary set of coils and a secondary set of coils. The control system can direct surplus current to the secondary set of coils to maximize the torque generated by the motor.

Claims

1. A surgical stapler, comprising:

an end effector comprising a plurality of deployable staples and a firing element;

a motor configured to drive said firing element, wherein said motor comprises a primary set of coils and a secondary set of coils; and

a control system in signal communication with said motor, wherein said control system comprises;

a battery;

a pulse width modulation circuit configured to control the duration of current pulses supplied from said battery to said motor; and

a switch configured to switch the electric motor between a plurality of operating states, wherein the plurality of operating states comprises;

a first operating state in which the primary set of coils are configured to drive said firing element; and

a second operating state in which said primary set of coils and said secondary set of coils are configured to drive said firing element.

2. The surgical stapler of claim 1, wherein the battery supplies current pulses to said primary set of coils at a voltage that corresponds to the maximum torque of said primary set of coils during the first operating state.

3. The surgical stapler of claim 2, wherein a surplus current is supplied to said secondary set of coils during the second operating state.

4. The surgical stapler of claim 3, wherein said control system maximizes the surplus current supplied to said secondary set of coils during the second operating state based on the volt-ampere limit of said battery.

5. The surgical instrument of claim 1, wherein said motor generates a first amount of torque during the first operating state, wherein said motor generates a second amount of torque during the second operating state, and wherein the second amount of torque is greater than the first amount of torque.

6. The surgical stapler of claim 5, wherein said motor drives said firing element in a first direction during the first operating state, wherein said motor drives said firing element in a second direction during the second operating state, and wherein the second direction is opposite to the first direction.

7. The surgical stapler of claim 6, wherein the first direction comprises a distally advancing direction, and wherein the second direction comprises a proximally retracting direction.

8. The surgical stapler of claim 1, wherein said motor comprises a stepper motor.

14. The surgical stapler of claim 5, wherein the second direction comprises a proximal direction.

15. The surgical stapler of claim 1, wherein said motor comprises a stepper motor.

9. A surgical stapler, comprising:

an end effector comprising a plurality of deployable staples and a firing element;

a control system, comprising;

a battery; and

a pulse width modulation circuit configured to control the duration of current pulses supplied from said battery; and

a motor in signal communication with said control system and configured to drive said firing element, wherein said motor comprises;

a primary set of coils configured to generate a first amount of torque, wherein the first amount of torque drives said firing element in a first direction; and

a secondary set of coils configured to generate a second amount of torque, wherein the first amount of torque and the second amount of torque drive said firing element in a second direction.

10. The surgical stapler of claim 9, wherein said battery is configured to supply current pulses to said primary set of coils at a voltage that corresponds to the maximum torque of said primary set of coils.

11. The surgical stapler of claim 10, wherein said battery operably supplies a surplus current to said secondary set of coils.

12. The surgical stapler of claim 9, wherein said control system maximizes the torque generated by said primary set of coils and the secondary set of coils when driving said firing element in the second direction.

13. The surgical stapler of claim 9, wherein the second direction is opposite to the first direction.

16. A surgical stapler, comprising:

an end effector comprising a plurality of deployable staples and a firing element;

a motor configured to drive said firing element, wherein said motor comprises a primary set of coils; and

a control system in signal communication with said motor, wherein said control system comprises;

a battery; and

a pulse width modulation circuit configured to control the duration of current pulses supplied from said battery to said primary set of coils.

17. The surgical stapler of claim 16, wherein said motor further comprises a secondary set of coils, and wherein said control system comprises a switch configured to operably supply current from said battery to said secondary set of coils.

18. The surgical stapler of claim 17, wherein said battery supplies current to said primary set of coils during a first operating state, and wherein said battery supplies current to said primary set of coils and said secondary set of coils during a second operating state.

19. The surgical stapler of claim 18, wherein said motor drives said firing element distally during the first operating state, and wherein said motor drives said firing element proximally during the second operating state.

20. The surgical stapler of claim 16, wherein said control system optimizes the torque generated by said motor.

21. The surgical stapler of claim 16, wherein said motor comprises a stepper motor.