IP Library Granted Patent US 7,384,421
Granted Patent B2
US 7,384,421 · App. 11/239,767 · Granted Jun 10, 2008

Slide-activated cutting assembly

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Quick Facts
Patent No.
US 7,384,421
App. No.
11/239,767
Granted
Jun 10, 2008
Kind
B2
Abstract

An endoscopic bipolar forceps is provided. The forceps includes a housing, a shaft, a drive assembly, a handle assembly and a slide activated cutting assembly. The shaft is affixed to the housing and comprises an end effector assembly comprising two jaw members at its distal end. The drive assembly is configured to move the end effector assembly. The handle assembly is in mechanical cooperation with the drive assembly. The slide-activated cutting assembly is disposed at least partially within the housing and move a knife rod comprising a knife blade at its distal end to cut tissue along a tissue seal. A source of electrosurgical energy is adapted to connect to each jaw member to enable them to conduct energy through tissue to affect a tissue seal.

Claims (25)

1. An endoscopic bipolar forceps, comprising:

a housing;

a shaft affixed to the housing comprising an end effector assembly comprising two jaw members at a distal end thereof, the shaft defining a longitudinal axis;

a drive assembly configured to move at least a portion of the end effector assembly;

a handle assembly comprising a movable handle adapted to force a drive flange of the movable handle into mechanical cooperation with the drive assembly to move at least a portion of the end effector assembly; and

a slide-activated cutting assembly disposed at least partially within the housing adapted to move a knife rod comprising a knife blade at a distal end thereof to cut tissue along a tissue seal, the slide-activated cutting assembly further including:

a slide trigger configured to be pushed distally to move the knife rod distally;

a knife slide adapted to facilitate translation of the knife rod, a proximal portion of the knife slide being in mechanical engagement with the slide trigger and a distal portion of the knife slide being in mechanical engagement with the knife rod;

a collar clamp operatively connected to the knife slide adapted to maintain alignment of the knife slide during translation of the knife rod; and

wherein a source of electrosurgical energy is adapted to connect to each jaw member such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal.

2. The endoscopic bipolar forceps according to claim 1 , wherein the slide trigger is configured to be pulled proximally to move the knife rod proximally.

3. The endoscopic bipolar forceps according to claim 1 , wherein the slide trigger comprises a generally arcuate-shaped finger rest.

4. The endoscopic bipolar forceps according to claim 1 , wherein the slide-activated cutting assembly further comprises a spring in mechanical engagement with the knife slide which biases the knife slide in a proximal position.

5. The endoscopic bipolar forceps according to claim 1 , further comprising a rotating assembly adapted to rotate the jaw members about the longitudinal axis defined by the shaft.

6. The endoscopic bipolar forceps according to claim 1 , further comprising a switch disposed within the housing and in electromechanical cooperation with a source of electrosurgical energy, the switch allowing a user to selectively supply bipolar energy to the jaw members to effect the tissue seal.

7. The endoscopic bipolar forceps according to claim 1 , wherein the drive assembly comprises a reciprocating sleeve that is adapted to, upon activation of the movable handle, translate one of the jaw members relative to the other jaw member.

8. The endoscopic bipolar forceps according to claim 1 , wherein the slide assembly comprises at least one spring adapted to bias the knife rod proximally.

9. The endoscopic bipolar forceps according to claim 1 , wherein the forceps is further defined by being in-line.

10. A slide-activated cutting assembly for use with a surgical instrument, comprising:

a slide trigger comprising a flange; and

a knife assembly comprising a knife slide, a cutter collar, a knife rod and a collar clamp, the knife slide comprising a proximal portion in mechanical cooperation with the flange of the slide trigger and a distal portion, the cutter collar being operatively connected with the distal portion of the knife slide, the knife rod extending distally from the cutter collar, the collar clamp which maintains alignment of the knife assembly during translation of the knife rod and being positioned adjacent the cutter collar,

wherein the slide trigger and the knife assembly mutually cooperate to translate the knife rod upon translation of the slide trigger.

11. The slide-activated cutting assembly according to claim 10 , wherein the slide trigger comprises a generally arcuate finger rest.

12. The slide-activated cutting assembly according to claim 10 , further comprising a knife blade supported on the knife rod.

13. The slide-activated cutting assembly according to claim 10 , further comprising a spring adapted to bias the knife assembly proximally.

Assignments (4)
CHANGE OF NAME Recorded Sep 21, 2010
From: SHERWOOD SERVICES AG
To: COVIDIEN AG
Reel/Frame 025017/0657 →
CHANGE OF NAME Recorded Sep 21, 2010
From: TYCO HEALTHCARE GROUP AG
To: COVIDIEN AG
Reel/Frame 025017/0663 →
MERGER Recorded Sep 21, 2010
From: COVIDIEN AG
To: TYCO HEALTHCARE GROUP AG
Reel/Frame 025017/0670 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2005
From: HUSHKA, DYLAN
To: SHERWOOD SERVICES AG
Reel/Frame 017383/0664 →