In-line vessel sealer and divider

• US 8,668,689 B2
• Filed: 04/19/2010
• Issued: 03/11/2014
• Est. Priority Date: 09/30/2005
• Status: Active Grant

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Covidien AG (Medtronic Plc)
• Inventors: Dumbauld, Patrick L., Garrison, David M., Guerra, Paul, Hushka, Dylan
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US12/762,482
• Publication Number:
  US 20100204697A1
• Time in Patent Office: 1,422 Days
• Field of Search: 606/41, 606 45- 52
• US Class Current: 606/51
• CPC Class Codes: A61B 18/085 Forceps, scissors
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/1253 monopolar
• CPC Class Codes: A61B 2018/126 bipolar
• CPC Class Codes: A61B 2018/1412 Blade
• CPC Class Codes: A61B 2018/1455 having a moving blade for cutting tissue grasped by the jaws

Abstract

An endoscopic forceps includes a housing having a shaft attached thereto, the shaft including a pair of jaw members disposed at a distal end thereof. The forceps also includes a drive assembly disposed in the housing which moves the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for manipulating tissue. A pair of handles is operatively connected to the drive assembly and the handles are movable relative to the housing to actuate the drive assembly to move the jaw members. Each of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy for treating tissue. The forceps also includes a first switch disposed on the housing which is activatable to selectively deliver energy of a first electrical potential to at least one jaw member for treating tissue in a monopolar fashion. A second switch is disposed on the housing and is activatable to selectively deliver energy of a first electrical potential to one jaw member and selectively deliver energy of a second electrical potential to the other jaw member for treating tissue in a bipolar fashion.

Claims

1. An endoscopic forceps, comprising:

a housing having a shaft attached thereto, the shaft including a pair of jaw members disposed at a distal end thereof;

a drive assembly disposed in the housing operable to move the jaw members relative to one another from a first position, wherein the jaw members are disposed in spaced relation relative to one another, to a second position, wherein the jaw members are closer to one another, for manipulating tissue;

a pair of handles operatively connected to the drive assembly, the handles movable relative to the housing to actuate the drive assembly to move the jaw members;

each jaw member adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy for treating tissue; and

a switch disposed on the housing and activatable to selectively deliver energy of a first electrical potential to at least one jaw member for treating tissue, the switch operatively coupled to an intensity control mechanism disposed within the housing that is selectively adjustable to regulate the level of electrosurgical energy to at least one jaw member, wherein the intensity control mechanism includes a slide bump configured to deflect a flexible circuit board to regulate the level of electrosurgical energy to at least one jaw member.

2. An endoscopic forceps according to claim 1, wherein the intensity control mechanism is selectively adjustable in discrete increments.

3. An endoscopic forceps according to claim 1, wherein the intensity control mechanism includes a first mechanical interface configured to engage a series of corresponding mechanical interfaces defined in the housing to regulate the level of electrosurgical energy in discrete increments.

4. An endoscopic forceps according to claim 3, wherein the first mechanical interface includes a detent and the corresponding mechanical interfaces defined within the housing include recesses.

5. An endoscopic forceps according to claim 4, wherein the intensity control mechanism includes a second mechanical interface that cooperates with the detent to mechanically engage a circuit board disposed within the housing at discrete locations when the detent engages a corresponding one of the series of recesses.

6. An endoscopic forceps according to claim 4, wherein the detent is disposed in a cantilevered fashion atop the intensity control mechanism.

7. An endoscopic forceps according to claim 1, wherein the intensity control is positioned atop a railway defined within the housing.