Automatic stapler for laparoscopic procedure with selective cutter and suction irrigator

• US 5,104,394 A
• Filed: 11/05/1990
• Issued: 04/14/1992
• Est. Priority Date: 11/05/1990
• Status: Expired due to Fees

• Current Assignee: Nusurg Medical, Inc.
• Original Assignee: Dennis J. Knoepfler
• Inventors: Knoepfler, Dennis J.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): Jackson, Gary
• Application Number:
  US07/609,363
• Time in Patent Office: 526 Days
• Field of Search: 606/142, 606/139, 606/143, 227/19, 227/175-180
• US Class Current: 606/143
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system

Abstract

An improved surgical stapler is disclosed which is particularly suitable for use in laparoscopic procedures. The stapler includes a handle and an elongated shaft and jaws at its distal end which are adapted to close staples. This improved stapler further includes a cutter which is adapted to cut items grasped by the jaws. The jaws are actuated independently of the stapling mechanism. This substantially improves the versatility of this device. A suctioning tube is also provided at the tip of the apparatus. This device permits surgeons to staple and subsequently selectively cut without removing the instrument.

Claims

1. A surgical stapler for use in laparoscopic surgery comprising a grip portion, a tip portion and a shaft portion extending between the grip portion and the tip portion said tip portion including

a staple advancing means and a pair of jaws adapted to close and bend staples and to act as a clamp;

a cutter adapted to move forwardly along said jaws to cut tissue held by said jaws;

said grip portion comprising means to advance said cutter;

means to activate said staple advancing means and means to independently close said jaws both when a staple is in place and when no staple is in place.

2. The stapler claimed in claim 1 further comprising a vacuum tube extending through said shaft to said tip portion.

3. The stapler claimed in claim 1 wherein said cutter advancing means is spring biased in a retracted position.

4. A laparoscopic cutting instrument comprising a grip portion, a tip portion and a shaft portion;

said tip portion including a spring biased pair of jaws operable by means of a collar slidably engaging said jaws;

a cutter comprising an elongated pusher extending the length of said shaft portion and have a forward most cutting tip adapted to slide along said jaws;

wherein said grip portion includes means to slide said collar forwardly to close said jaws and means to move said pusher forwardly and rearwardly.

5. The cutting instrument claimed in claim 4 further comprising means to advance staples between said jaws.