IOL delivery systems

Patent metadata

Field	Value
Publication number	US-10470875-B2
Application number	US-201715626291-A
Country	US
Kind code	B2
Filing date	Jun 19, 2017
Priority date	Jun 23, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

An intraocular lens (IOL) insertion apparatus includes a handpiece body having a distal tip and a proximal section. The IOL insertion apparatus also includes a folding chamber located within the handpiece body, the folding chamber shaped to fold an IOL advancing through the folding chamber. The IOL insertion apparatus also includes an advancement system. The advancement system includes an advancement carriage movable between a first position and a second position within the handpiece body. The advancement carriage includes a spring system biasing the advancement carriage in a distal direction toward the second position and a dampening system to dampen motion of the advancement carriage. The advancement system further includes an elongated advancement plunger that includes a distal end to advance the IOL through the folding chamber and a proximal end connected to the advancement carriage.

First claim

What is claimed is:

1. An intraocular lens (IOL) insertion apparatus comprising:
a handpiece body comprising:
a distal tip; and
a proximal section;
a folding chamber located within the handpiece body, the folding chamber shaped to fold an IOL advancing through the folding chamber; and
an advancement system comprising:
an advancement carriage movable between a first position and a second position within the handpiece body, the advancement carriage comprising:
a spring system biasing the advancement carriage in a distal direction toward the second position; and
a dampening system to dampen motion of the advancement carriage; and
an elongated advancement plunger comprising:
a distal end to advance the IOL through the folding chamber; and
a proximal end connected to the advancement carriage a trigger mechanism to secure the advancement carriage in the first position and, upon actuation of the trigger mechanism, to release the advancement carriage such that the spring system moves the advancement carriage in the distal direction toward the second position, wherein the trigger mechanism comprises a ring that, when rotated relative to the handpiece body into a specified rotational position, releases the advancement carriage.

2. The apparatus of claim 1 , wherein the handpiece body further comprises a distal section, wherein the proximal section is slidingly displaceable from and rotatable relative to the distal section.

3. The apparatus of claim 2 , further comprising a deployment plunger selectively engageable with the IOL, wherein the sliding displacement and rotation of the proximal section relative to the distal section aligns the deployment plunger with the IOL.

4. The apparatus of claim 3 , wherein the deployment plunger comprises a compressible distal tip operative to the IOL.

5. The apparatus of claim 4 , wherein the advancement carriage prevents sliding and rotating of the proximal section relative to the distal section until the advancement carriage has advanced in a distal direction from the first position.

6. The apparatus of claim 4 further comprising a threaded mechanism cooperatively engaged with the deployment plunger, wherein rotation of the threaded mechanism relative to the deployment plunger distally advances the deployment plunger.

7. The apparatus of claim 1 , wherein the spring system comprises a plurality of constant force springs.

8. The apparatus of claim 1 , wherein the dampening system comprises a track extending a length of the handpiece body and one or more gears that engage the track.

9. The apparatus of claim 1 , wherein the distal end of the advancement plunger comprises a rigid material.

10. An intraocular lens (IOL) insertion apparatus comprising:
a handpiece body comprising:
a proximal section; and
a distal section forming a passage extending through at least a portion of the distal section and configured to dispense an intraocular lens, the distal section being rotatable relative to the proximal section between a first rotational position and a second rotational position,
an advancement carriage comprising a spring to bias the advancement carriage in a first direction disposed within the handpiece body and longitudinally moveable therein;
an advancement plunger connected to a proximal end of the advancement carriage;
a deployment plunger angularly offset from the advancement plunger about a longitudinal axis of the handpiece body;
a deployment mechanism operably connected to the deployment plunger, the deployment mechanism actuatable to advance the deployment plunger; and
a trigger mechanism moveable between a lock position in which the advancement carriage is prevented from moving within the handpiece body and a release position in which the advancement carriage is released and permitted to move within the handpiece body,
wherein, when distal section is in the first rotational position, the advancement plunger aligns with the passage formed in the distal section, and wherein, when the distal section is in the second rotational position, the deployment plunger aligns with the passage formed in the distal section.

11. The apparatus of claim 10 , wherein the advancement carriage further comprising a dampening system to dampen motion of the advancement carriage in the first direction.

12. The apparatus of claim 11 , wherein the dampening system comprises:
a track extending a length of the handpiece body;
a gear that engages the track; and
a viscous fluid, wherein rotational motion of the gear causes the viscous fluid to produce a resistive force that limits the rotational motion of the gear.

13. The apparatus of claim 10 further comprising a guiderail disposed along an interior of the handpiece body to guide the advancement carriage from a first position to second position after being released by the trigger mechanism.

14. The apparatus of claim 13 , further comprising a lock mechanism operative to prevent rotation of the proximal section relative to the distal section until the advancement carriage is in the second position.

15. The apparatus of claim 10 , wherein the deployment mechanism comprises a rotational mechanism rotatable by a user, the rotational mechanism comprising a threaded mechanism cooperatively engagable with the deployment plunger and arranged to displace the deployment plunger in a distal direction in response to rotation of the threaded mechanism.

Assignees

• Novartis Ag

Inventors

• Fayyaz Asif
• Singh Sudarshan B
• Belisle Chris
• Hartsig Bill
• Jang Sam

Classifications

• A61F2/1662 Primary

  Instruments for inserting intraocular lenses into the eye · CPC title

• A61F9/0017

  implantable in, or in contact with, the eye, e.g. ocular inserts · CPC title

• A61F2/1672 Primary

  with a two-stage plunger, e.g. rotatable and pushable or rotatable at different speeds · CPC title