Tissue stapling attachment for use with an electromechanical driver device

• US 6,533,157 B1
• Filed: 02/22/2000
• Issued: 03/18/2003
• Est. Priority Date: 02/22/2000
• Status: Expired due to Term

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Power Medical Interventions, Inc. (Medtronic Plc)
• Inventors: Whitman, Michael P.
• Primary Examiner(s): Rada; Rinaldi I.
• Assistant Examiner(s): TRAN, LOUIS B
• Application Number:
  US09/510,931
• Time in Patent Office: 1,120 Days
• Field of Search: 227/19,83,88,89,176.1,175.1,177.1
• US Class Current: 227/175.1
• CPC Class Codes: A61B 17/0684 having a forming anvil staying above the tissue during stapling
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2034/742 Joysticks
• CPC Class Codes: A61B 34/70 Manipulators specially adapted for use in surgery

Abstract

A stapler attachment for use with an electromechanical device driver comprises a staple holding member which is spring mounted to a staple closing member, which is, in turn, mounted to a threaded driver element concentrically mounted about a threaded shaft such that staple closing member and the staple holding member can be advanced and retracted along a track within a housing. A staple is advanced by the rotation of the threaded shaft until the staple holding member is stopped against an opening lip formed in an opening at the distal staple discharging end of the housing. At this position, the prongs of the staple have been advanced out of the distal staple discharging end and into the tissue to be joined. The staple closing member continues to advance as the spring between the staple holding member and the staple closing member compresses. This advancement permits the staple closing member to deform the staple into a closed D-shape conformation. The staple is released from the attachment through the distal staple discharging end of the housing upon further advancement of the staple closing member. Reverse rotation of the threaded shaft retracts the staple closing member and staple holding member into a staple receiving position where a spring-loaded staple dispenser pushes one of a plurality of staples in a staple cartridge into a staple carrying groove of a staple carrying element of the staple holding member, in preparation for a subsequent stapling procedure.

Claims

1. An electro-mechanical surgical system, comprising:

an elongated shaft;

an axially rotatable drive shaft disposed within the elongated shaft;

a surgical device configured to detachably couple to a distal end of the elongated shaft, wherein the device includes;

a housing having an opening and an opening lip formed in the opening;

a driver disposed in the housing;

a staple closing member mounted to the driver and translating within the housing in correspondence with the driver; and

a staple holding member configured to hold a staple and coupled by a spring to the staple closing member, wherein the driver is configured to advance the staple closing member and the staple holding member toward the opening and advances the staple into tissue to be joined until further advancement of the staple holding member is prevented by contact between the staple holding member and the opening lip, wherein the driver is further configured to advance the staple closing member as the spring is compressed and to cause the staple closing member to close the staple within the tissue; and

a motor system configured to drive the axially rotatable drive shaft.

2. The electro-mechanical surgical system according to claim 1, wherein the driver includes a threaded rotatable shaft configured to be coupled to the axially rotatable shaft.

3. An electro-mechanical surgical system, comprising:

an elongated shaft;

an axially rotatable drive shaft disposed within the elongated shaft;

a surgical device configured to detachably couple to a distal end of the elongated shaft, wherein the device includes

a housing having an opening and an opening lip formed in the opening;

a driver disposed in the housing;

a staple closing member mounted to the driver and translating within the housing in correspondence with the driver; and

a

staple holding member configured to hold a staple and coupled by a spring to the staple closing member, wherein the driver is configured to advance the staple closing member and the staple holding member toward the opening and advances the staple into tissue to be joined until further advancement of the staple holding member is prevented by contact between the staple holding member and the opening lip, wherein the driver is further configured to advance the staple closing member as the spring is compressed and to cause the staple closing member to close the staple within the tissue; and

a motor system configured to drive the axially rotatable drive shaft;

a control system configured to control the motor system; and

a remote control unit configured to communicate with the control system to control the motor system via the control system.

4. The electro-mechanical surgical system according to claim 3, wherein the remote control unit includes a wired remote control unit.

5. An electro-mechanical surgical system, comprising:

an elongated shaft;

an axially rotatable drive shaft disposed within the elongated shaft;

a surgical device configured to detachably couple to a distal end of the elongated shaft, wherein the device includes;

a housing having an opening and an opening lip formed in the opening;

a driver disposed in the housing;

a staple closing member mounted to the driver and translating within the housing in correspondence with the driver; and

a staple holding member configured to hold a staple and coupled by a spring to the staple closing member, wherein the driver is configured to advance the staple closing member and the staple holding member toward the opening and advances the staple into tissue to be joined until further advancement of the staple holding member is prevented by contact between the staple holding member and the opening lip, wherein the driver is further configured to advance the staple closing member as the spring is compressed and to cause the staple closing member to close the staple within the tissue, wherein a staple is loaded into the staple holding member through the use of a spring-loaded mechanism when the staple holding member is in a staple receiving position within the housing; and

a motor system configured to drive the axially rotatable drive shaft.

6. An electro-mechanical surgical system, comprising:

an elongated shaft;

an axially rotatable drive shaft disposed within the elongated shaft;

a surgical device configured to detachably couple to a distal end of the elongated shaft, wherein the device includes;

a housing having an opening and an opening lip formed in the opening;

a driver disposed in the housing;

a staple closing member mounted to the driver and translating within the housing in correspondence with the driver; and

a staple holding member configured to hold a staple and coupled by a spring to the staple closing member, wherein the driver is configured to advance the staple closing member and the staple holding member toward the opening and advances the staple into tissue to be joined until further advancement of the staple holding member is prevented by contact between the staple holding member and the opening lip, wherein the driver is further configured to advance the staple closing member as the spring is compressed and to cause the staple closing member to close the staple within the tissue, wherein a staple is loaded into the staple holding member when the staple holding member is in a staple receiving position within the housing, and wherein the staple, before being loaded into the staple holding member, is held in a staple cartridge and is loaded into the staple holding member by being pushed from the staple cartridge into the staple holding member; and

a motor system configured to drive the axially rotatable drive shaft.

7. An electro-mechanical surgical system, comprising:

an elongated shaft;

an axially rotatable drive shaft disposed within the elongated shaft;

a surgical device configured to detachably couple to a distal end of the elongated shaft, wherein the device includes;

a housing having an opening and an opening lip formed in the opening;

a driver disposed in the housing;

a staple closing member mounted to the driver and translating within the housing in correspondence with the driver; and

a staple holding member configured to hold a staple and coupled by a spring to the staple closing member, wherein the driver is configured to advance the staple closing member and the staple holding member toward the opening and advances the staple into tissue to be joined until further advancement of the staple holding member is prevented by contact between the staple holding member and the opening lip, wherein the driver is further configured to advance the staple closing member as the spring is compressed and to cause the staple closing member to close the staple within the tissue, and wherein the staple holding member includes a staple carrying groove within which a staple is carried during advancement of the staple holding member, the staple carrying groove having a groove lip against which a flat bottom portion of the staple is pressed by the staple closing member after the staple holding member comes into contact with the opening lip; and

a motor system configured to drive the axially rotatable drive shaft.

8. The electro-mechanical surgical system according to claim 7, wherein the stapling closing member includes protrusions that engage lateral portions of the flat bottom portion of staple.

9. The electro-mechanical surgical system according to claim 7, wherein the staple closing member includes a sloped surface that engages a central portion of a flat bottom portion of a staple, and wherein, after the staple has closed within the tissue, continued advancement of the driver causes the sloped surface to push the staple out of the staple carrying groove.

10. A surgical stapler, comprising:

a housing having an opening, a lip being formed in the opening;

a staple closing member advancing longitudinally within said housing;

a staple holding member configured to hold a staple;

a spring positioned between the staple closing member and the staple holding member; and

a rotatable drive shaft coupled to the staple closing member, wherein rotation of the drive shaft advances the staple holding member and staple closing member until further advancement of the staple holding member is prevented by contact between the staple holding member and the lip, wherein continued rotation of the drive shaft further advances said staple closing member so that the staple closing member compresses the spring and closes the staple while the staple holding member is prevented from further advancement.

11. The surgical stapler according to claim 10, wherein the staple closing member has a sloped surface, and wherein continued rotation of the drive shaft advances the staple closing member so that the sloped surface engages the staple and releases the staple from the staple holding member.