Circular stapler

• US 20100084453A1
• Filed: 10/03/2008
• Published: 04/08/2010
• Est. Priority Date: 10/03/2008
• Status: Abandoned Application

• Current Assignee: Changzhou Waston Medical Appliance Co. Ltd.
• Original Assignee: Changzhou Waston Medical Appliance Co. Ltd.
• Inventors: Hu, Ren-Min
• Application Number:
  US12/285,378
• Publication Number:
  US 20100084453A1
• Time in Patent Office: Days
• US Class Current: 227/179.100
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument

Abstract

A circular stapler facilitate performing end to end anastomosis; further an occasional prompt with sound effect warning timely firing the stapler bolts. A circular stapler includes a bolting machine (1) consists of a shaft (11), an actuator (12), and a stapler (13); a hand-held handle (2); an adjusting knob (3); and an anvil (4), a hollow anvil shaft (41);

• characterized in that: a conic trocar (5) disposed to a most distal end of said bolting machine (1), a cambered surface of said conic trocar (5) formed with, at least, three relieve-pressure grooves (53) equal distant distributed are extended from an apex (51) to a bottom (52); an audio prompt (6) disposed inside said bolting machine (1), said audio prompt (6) includes a printed circuit board (PCB) (61), a buzzer (62) electrically connected to the PCB (61) controlled by a switch, and a battery (64) supplies power to the PCB (61).

Claims

1. A circular stapler includes a bolting machine (1) consists of a shaft (11), an actuator (12) disposed to a proximal end of said shaft (11) and a stapler (13) disposed to a distal end of said shaft (11);

a hand-held handle (2) disposed to a bottom side of said actuator (12), when a safety catch (21) is released, operation of said handle can fire bolts from the stapler;

an adjusting knob (3) disposed to a proximal end of said actuator (12); and

an anvil (4) is connectable to said stapler (13), a hollow anvil shaft (41) is disposed to a proximal end of said anvil (4);

characterized in that;

a conic trocar (5) disposed to a most distal end of said bolting machine (1), said trocar (5) fit in said anvil shaft (41);

a cambered surface of said conic trocar (5) formed with, at least, three relieve-pressure grooves (53) equal distant distributed are extended from an apex (51) to a bottom (52);

an audio prompt (6) is disposed inside said bolting machine (1), said audio prompt (6) includes a printed circuit board (PCB) (61), a buzzer (62) electrically connected to the PCB (61), a switch (63) switches on/off said buzzer (62) and a battery (64) supplies power to the PCB (61).

2. The circular stapler of claim 1 wherein an included angle between each two adjacent relieve-pressure grooves (53) converged at the apex is 120 degrees.

3. The circular stapler of claim 1 wherein said relieve-pressure grooves (53) are concaved in said cylindrical surface and cambered in shape.

4. The circular stapler of claim 1 wherein a switch (63) disposed to a lateral face near said distal end of said bolting machine (1), where a firing indicator window showing a firing indicator scale formed (not shown).

5. The circular stapler of claim 1 wherein a proximal end of said anvil shaft (41) is formed with a clip notch (42).

6. The circular stapler of claim 1 wherein said safety catch (21) disposed between said bolting machine (1) and said handle (2) can be used to ensure an opportune firing of bolts.