Surgical instrument for extracting an anastomotic ring device

• US 20060253134A1
• Filed: 05/03/2005
• Published: 11/09/2006
• Est. Priority Date: 05/03/2005
• Status: Active Grant

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Ortiz, Mark S., Freeman, Lynetta
• Granted Patent: US 7,758,589 B2
• Time in Patent Office: Days
• US Class Current: 606/153
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• CPC Class Codes: A61B 2017/0408 Rivets other bone rivets A61B17/68; rivets for connecting prosthetic parts A61F2002/30433, A61F2220/0041

Abstract

A surgical instrument comprises a handle and an elongate shaft, and is operable to remove an anastomotic ring device from a patient. The elongate shaft houses a plurality of ring engaging fingers. Each of the fingers comprises sheath housing a wire having a hook at its distal end. Each hook may be advanced beyond the distal end of a respective sheath to engage petals on an anastomotic ring device. Subsequent proximal retraction of the hooks secures the anastomotic ring device to the ring engaging fingers. With the anastomotic ring device secured to the ring engaging fingers, the fingers may be drawn together to collapse the anastomotic ring device from an actuated, hollow rivet-shaped configuration to an unactuated, cylindrically-shaped configuration. The surgical instrument may then contain the collapsed anastomotic ring device, thereby facilitating removal of the anastomotic ring device from the patient.

Claims

1. A surgical instrument for extracting an anastomotic ring device, comprising:

(a) a handle;

(b) an elongate shaft slidably engaged with the handle, the elongate shaft comprising a sleeve; and

(c) a plurality of ring-engaging fingers, wherein each of the fingers has a proximal end and a distal end, wherein at least a first portion of each finger is housed within the shaft, and wherein a second portion of each finger is configured to engage the anastomotic ring device, wherein the second portion of each finger includes the distal end of each finger;

wherein the sleeve is operable to slide over the second portion of the fingers, wherein the sleeve and fingers are configured to collapse at least a portion of the anastomotic ring device when the sleeve is slid over the second portion of the fingers and the second portion of the fingers are engaged with the anastomotic ring device.

2. The surgical instrument of claim 1, wherein the distal end of each finger comprises a hook.

3. The surgical instrument of claim 1, wherein each finger comprises a sheath, wherein each sheath houses at least a portion of a respective ring engaging member, wherein each ring engaging member has a distal end.

4. The surgical instrument of claim 3, wherein each ring engaging member includes a hook-shaped member positioned at the distal end of the respective ring engaging member.

5. The surgical instrument of claim 3, wherein each ring engaging member comprises a wire.

6. The surgical instrument of claim 3, wherein each ring-engaging member is moveable from a first position, in which a substantial portion of the respective distal end of the respective ring-engaging member is contained within the respective sheath, to a second position, in which a substantial portion of the respective distal end of the respective ring-engaging member extends from the respective sheath.

7. The surgical instrument of claim 3, further comprising a plurality of actuator buttons, wherein each actuator button is in communication with a respective ring-engaging member, and wherein each actuator button is operable to communicate motion to a respective ring-engaging member.

8. The surgical instrument of claim 7, wherein the actuator buttons are located on the handle.

9. The surgical instrument of claim 7, wherein each actuator button comprises a spring, wherein each of the springs is configured to bias the respective ring-engaging member to a first position.

10. The surgical instrument of claim 1, further comprising a sleeve actuator in communication with the sleeve, wherein the sleeve actuator is operable to communicate sliding motion to the sleeve.

11. The surgical instrument of claim 1, wherein at least a portion of each distal ends of each ring-engaging finger is flared outwardly from a longitudinal axis of the sleeve.

12. The surgical instrument of claim 11, wherein said distal ends of the ring-engaging fingers are configured to engage the anastomotic ring at separations of 120 degrees.

13. A surgical instrument for extracting an anastomotic ring device comprising:

(a) a handle;

(b) an elongate sleeve having a proximal end and a distal end slidably attached to the handle; and

(c) a plurality of ring-engaging members each having a proximal end and a distal end, wherein at least a portion of each ring engaging member is housed within the elongate sleeve, wherein the distal ends of the ring-engaging members extend from the distal end of the sleeve, wherein further the distal ends of the ring-engaging members are flared outwardly to engage an outer circumference the anastomotic ring;

wherein the sleeve is operable to slidably advance distally over the distal ends of the ring-engaging members after the ring-engaging members engage the anastomotic ring, thereby drawing the distal ends of the ring-engaging members into longitudinal alignment with the sleeve,

14. The instrument of claim 13, wherein the sleeve is further operable to advance distally the anastomotic ring and capture the anastomotic ring for removal.

15. A surgical instrument for extracting an anastomotic ring device comprising:

(a) a handle;

(b) an elongate shaft slidably attached to the handle, wherein the shaft comprises a sleeve having a proximal end and a distal end;

(c) a plurality of hook sheaths, each hook sheath having a proximal end and a distal end, wherein the hook sheaths are housed within the sleeve, wherein the distal ends of the hook sheaths extend from the distal end of the sleeve, wherein further the distal ends of the hook sheaths members are flared outwardly from a longitudinal axis of the sleeve; and

(d) a plurality of ring-engaging members, each ring-engaging member terminating in a hook for engaging the outer circumference of the anastomotic ring, wherein each of the ring-engaging members is housed within a respective one of the hook sheaths, wherein each ring-engaging member is moveable from a first position in which a substantial portion of the respective hook is contained within the respective hook sheath, to a second position in which a substantial portion of the respective hook protrudes from the respective hook sheath;

wherein the sleeve is operable to distally advance over the distal ends of the hook wherein the distal advancement of the sleeve draws the hook sheaths into substantial longitudinal alignment with the sleeve, wherein further the sleeve is operable to distally advance over the anastomotic ring and thereby capture the anastomotic ring for removal.

16. A surgical instrument for extracting an anastomotic ring device comprising:

(a) an elongate shaft having a longitudinal axis;

(c) a plurality of ring-engaging members, each having a distal end configured to engage the outer circumference an anastomotic ring, wherein the distal ends are flared outwardly from the longitudinal axis of the elongate shaft; and

(d) a ring-collapsing element operable to selectively draw the distal ends of the ring-engaging members into substantial alignment with the longitudinal axis of the elongate shaft.

17. The instrument of claim 16, wherein each ring-engaging member comprises a substantially hook-shaped member.

18. A method of extracting a deployed anastomotic ring device, the method comprising:

(a) inserting an elongate shaft of a surgical instrument adjacent a deployed anastomotic ring device in a patient, wherein the anastomotic ring device has an outer circumference;

(b) engaging portions of the outer circumference of the anastomotic ring device with a plurality of ring-engaging members on the elongate shaft;

(c) advancing a sleeve of the elongate shaft over at least a portion of the ring-engaging members to collapse at least a portion of the anastomotic ring from an actuated, hollow rivet-shaped position to an unactuated, cylindrical-shaped position;

(d) further advancing the sleeve through the anastomotic opening and capturing a remainder of the anastomotic ring within the sleeve; and

(e) removing the shaft from the patient.

19. The method of claim 18, wherein the act of engaging comprises engaging one or more actuator buttons to move the ring-engaging members from a first position, in which a distal portion of each of the ring-engaging members is contained in a respective sheath, to a second position, in which the distal portion of each of the ring-engaging members extends from the respective sheath.

20. A surgical instrument for extracting an anastomotic ring device, comprising:

(a) a means for engaging portions of a deployed anastomotic ring device within a patient'"'"'s body;

(b) a means for transforming the engaged anastomotic ring device from an actuated, hollow rivet-shaped configuration to an unactuated, cylindrical-shaped configuration; and

(b) a means for removing the unactuated, cylindrical-shaped anastomotic ring device from the patient'"'"'s body.