Automatic stapler for laparoscopic procedure with selective cutter, nontraumatic jaws and suction irrigator

• US 5,282,807 A
• Filed: 01/24/1992
• Issued: 02/01/1994
• Est. Priority Date: 11/05/1990
• Status: Expired due to Fees

• Current Assignee: Nusurg Medical, Inc.
• Original Assignee: Nusurg Medical, Inc.
• Inventors: Knoepfler, Dennis J.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): Jackson, Gary
• Application Number:
  US07/825,151
• Time in Patent Office: 739 Days
• Field of Search: 606/139, 606/142, 606/143, 606/167, 227/180, 227/901
• US Class Current: 606/143
• 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 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• 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 nontraumatic 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 suitable for hydro dissection is also provided at the tip of the apparatus. This device permits surgeons to dissect, hydro dissect, 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 nontraumatic jaws adapted to close and bend staples;

said jaws each including a staple channel and a nontraumatic grasping surface adjacent said channels;

a cutter adaptor to move relative to 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 tube extending through said shaft to said tip portion adaptor to connect to a hydro dissection device.

3. The stapler claimed in claim 1 wherein said jaws include a pointed tip adapted to dissect tissue.

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

said tip portion including a pair of nontraumatic jaws;

said tip portion further including a hydro dissection tube;

wherein said grip portion includes a means to close said jaws, and

wherein said tip portion includes a cutter operated at said grip portion, said cutter adapted to cut tissue held between said jaws.

5. A laparoscopic dissecting stapler comprising a grip portion, a tip portion and a shaft portion;

said tip portion including a pair of nontraumatic jaws;

said tip portion further including a hydrodissection tube;

means to advance staples between said jaws;

wherein said grip portion includes means to close said jaws.