IP Library Granted Patent US 8,992,554
Granted Patent B2
US 8,992,554 · App. 14/279,838 · Granted Mar 31, 2015

Guarded surgical knife handle

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Quick Facts
Patent No.
US 8,992,554
App. No.
14/279,838
Granted
Mar 31, 2015
Kind
B2
Abstract

A guarded surgical knife handle includes a handle portion with a blade holder, a chamber within the handle portion, and a slot. The guarded surgical knife handle also includes a guard having an open distal end slidably mounted within the handle portion that can slide longitudinally between an unguarded position and a guarded position. The guard is sized to surround the blade in the guarded position. The guarded surgical knife handle also includes a latch that latches the guard when the guard is slid into the guarded position and a first button that disengages the latch. The guarded surgical knife handle includes a bias member that forces the guard in a proximal direction to an unguarded position when the latch is disengaged along with a second button extending through the slot used to slide the guard in a distal direction into the guarded position.

Claims (16)

1. A method for unguarding and guarding a surgical knife, comprising:

providing a guarded surgical knife comprising:

a handle portion comprising a blade holder adapted to hold a blade, a chamber within the handle portion, and detent, and a slot;

a guard having an open distal end slidably mounted within the handle portion and operable to slide longitudinally between an unguarded position and a guarded position, wherein the guard is sized to surround the blade in the guarded position;

a cantilevered latch formed on the guard, the latch operable to engage the detent to latch the guard when the guard is slid into the guarded position;

a first button operable to disengage the latch;

a bias member configured to force the guard in a proximal direction to an unguarded position when the latch is disengaged; and

a second button extending through the slot and operable to slide the guard in a distal direction into the guarded position,

disengaging the latch using the first button to allow the bias member to force the guard in the proximal direction; and

sliding the guard to the guarded position to re-engage the latch.

2. The method of claim 1 , wherein the guard comprises a transparent material.

3. The method of claim 1 , wherein the bias member comprises a coil spring.

4. The method of claim 1 , wherein the distal end of the guard has a relatively greater height such that the distal end is sized to fit around the blade.

5. The method of claim 4 , wherein the handle comprises a notch, and the notch is sized to receive the portion of the guard with the relatively greater height.

6. The method of claim 1 , wherein the blade holder is located at a bottom surface of the handle portion.

7. The method of claim 1 , wherein the first button comprises a textured top surface.

Assignments (3)
CONFIRMATORY DEED OF ASSIGNMENT EFFECTIVE APRIL 8, 2019 Recorded Jul 23, 2020
From: ALCON RESEARCH, LLC
To: ALCON INC.
Reel/Frame 053293/0484 →
MERGER Recorded Jul 21, 2020
From: ALCON RESEARCH, LTD.
To: ALCON RESEARCH, LLC
Reel/Frame 053273/0022 →
CONFIRMATORY DEED OF ASSIGNMENT EFFECTIVE APRIL 8, 2019 Recorded Dec 10, 2019
From: NOVARTIS AG
To: ALCON INC.
Reel/Frame 051454/0788 →