Fluid delivery mechanism for use with anastomosing, stapling, and resecting instruments

• US 6,491,201 B1
• Filed: 02/22/2000
• Issued: 12/10/2002
• 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): Morris, Lesley D.
• Assistant Examiner(s): FRISTOE JR, JOHN K
• Application Number:
  US09/510,932
• Time in Patent Office: 1,022 Days
• Field of Search: 227/19, 227/155, 227/179.1, 227/180.1, 227/876.1, 604/43, 604/544
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples

Abstract

A medicine delivery mechanism or fibrin injection mechanism for use in combination with an anastomosing and stapling attachment for an electromechanical device driver comprises a dispensing chamber with an elongated cylindrical cross section (although other shapes can be used) which is formed in the staple housing of the attachment in lieu of a staple port or staple ports, and which has a mouth forming a channel lined at its innermost edge perimeter with inward facing prongs or teeth. The dispensing chamber contains a sac filled with fibrin. A delivery or plunger driver travels within the dispensing chamber to press a sac of fibrin against the inward facing prongs, tearing the sac and releasing the fibrin to push the fibrin through the channel to the treatment site.

Claims

1. A fluid delivery device, comprising:

a dispensing chamber containing a fluid;

a channel communicating between a treatment site and said dispensing chamber;

a delivery driver traveling within said dispensing chamber with a force greater than the force needed to push said fluid through said channel; and

a sac within said dispensing chamber and enclosing said fluid; and

wherein at least one of said dispensing chamber and said channel has at least one sharpened interior portion.

2. The device of claim 1 wherein at least one of said dispensing chamber and said channel has an interior and wherein at least one sharpened prong extending from a wall of said channel and directed toward said interior.

3. The device of claim 2, wherein said prong is also directed in a direction opposite the direction of travel of said delivery driver.

4. A fluid delivery device, comprising:

a dispensing chamber containing a fluid;

a channel communicating between a treatment site and said dispensing chamber;

a delivery driver traveling within said dispensing chamber with a force greater than the force needed to push said fluid through said channel; and

a housing, said housing containing said dispensing chamber, and containing a port adapted to fit an unbent staple.

5. The device of claim 4 wherein said delivery driver is an extension of a turning drive shaft, and wherein said turning drive shaft also drives a staple driver.

6. The device of claim 4, wherein said delivery driver is cylindrical.

7. A fluid delivery device, comprising:

a dispensing chamber containing a fluid;

a channel communicating between a treatment site and said dispensing chamber;

a delivery driver traveling within said dispensing chamber with a force greater than the force needed to push said fluid through said channel; and

a cannula, said cannula having a sharpened distal end, said cannula traveling within said dispensing chamber.

8. The device of claim 7 further comprising a sac within said cannula and enclosing said fluid;

and wherein said cannula has at least one sharpened interior portion.

9. The device of claim 8, wherein said cannula has an interior and at least one sharpened prong extending from a wall of said cannula and directed toward said interior.

10. The device of claim 9, wherein said prong is also directed in a direction opposite the direction of travel of said delivery driver.

11. The device of claim 7 further comprising a housing, said housing containing said dispensing chamber, and containing a port adapted to fit an unbent staple.

12. The device of claim 11, wherein said delivery driver is an extension of a turning drive shaft, and wherein said turning drive shaft also drives a staple driver.

13. The device of claim 11, wherein said delivery driver is cylindrical.

14. The device of claims 7, wherein said delivery driver is an extension of a proximal end of said cannula.

15. The device of claim 14, further including a connector portion connecting said delivery driver and said cannula.

16. The device of claim 15, wherein said connector portion is structurally weaker than said delivery driver or said cannula.

17. The device of claim 15, wherein said connector portion is compressible.

18. The device of claim 17, wherein said connector portion includes a spring.