Systems and methods for intraocular lens deployment

Patent metadata

Field	Value
Publication number	US-10405972-B2
Application number	US-201615238547-A
Country	US
Kind code	B2
Filing date	Aug 16, 2016
Priority date	Jun 23, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

An intraocular lens (IOL) insertion apparatus may include a handpiece body having a distal tip and a deployment chamber located at a distal end of the handpiece body. The deployment chamber is sized and shaped to hold a folded IOL. The IOL insertion apparatus further includes a deployment system disposed within the handpiece body. The deployment system may include a deployment carriage movable between a first position and a second position within the handpiece body. The deployment carriage may include a biasing element that biases the deployment carriage in a distal direction toward the distal tip. The deployment system may further include a deployment trigger that prevents distal movement of the deployment carriage unless pressed and a deployment plunger having a proximal end secured to the deployment carriage and a distal end to engage the folded IOL.

First claim

What is claimed is:

1. An intraocular lens (IOL) insertion apparatus comprising:
a handpiece body having a distal tip, wherein the handpiece body comprises a distal section and a proximal section, the proximal section being slidingly engaged and rotatable from a first rotational position to a second rotational position relative to the distal section when proximally displaced from the distal section;
a deployment chamber located at a distal end of the handpiece body, the deployment chamber sized and shaped to hold a folded IOL;
a deployment system disposed within the handpiece body, the deployment system comprising:
a deployment carriage movable between a first position and a second position within the handpiece body, the deployment carriage including a biasing element that biases the deployment carriage in a distal direction toward the distal tip;
a deployment trigger that prevents distal movement of the deployment carriage unless pressed; and
a deployment plunger having a proximal end secured to the deployment carriage and a distal end to engage the folded IOL.

2. The apparatus of claim 1 , further comprising, an advancement system disposed within the handpiece body, the advancement system comprising:
an advancement carriage located within the handpiece body at a location proximal of the deployment carriage, the advancement carriage including a biasing element biasing the advancement carriage in the distal direction toward the deployment carriage and including a dampening system to dampen motion of the advancement carriage; and
an elongated advancement plunger having a distal end arranged to engage the IOL and a proximal end connected to the advancement carriage.

3. The apparatus of claim 2 , wherein the advancement carriage is operative to abut against the deployment carriage after moving in the distal direction.

4. The apparatus of claim 3 , wherein the biasing element of the advancement carriage and the biasing element of the deployment carriage together provide a force to push the IOL out of the distal tip.

5. The apparatus of claim 2 , further comprising an advancement trigger to release the advancement carriage to move in the distal direction.

6. The apparatus of claim 1 , wherein the deployment trigger comprises a spring-loaded cleat.

7. The apparatus of claim 6 , wherein the cleat comprises a through-hole, the deployment plunger extending through the through-hole.

8. The apparatus of claim 7 , wherein when the deployment trigger is in an unengaged state, the cleat grasps the deployment plunger with a surface of the through-hole to prevent distal movement of the deployment carriage.

9. The apparatus of claim 8 , wherein engagement of the deployment trigger changes an angle of the through-hole to allow the deployment plunger to slide through the through-hole.

10. The apparatus of claim 1 , wherein when the proximal section is at the first rotational position relative to the distal section, an advancement plunger is aligned with the IOL, and when the proximal section is at the second rotational position relative to the distal section, the deployment plunger is aligned with the IOL.

11. The apparatus of claim 10 , wherein the deployment trigger is inaccessible to an operator until the proximal section is at the second rotational position with respect to the distal section.

12. The apparatus of claim 1 , wherein the biasing element of the deployment carriage comprises a constant force spring.

13. An intraocular lens (IOL) insertion apparatus comprising:
a handpiece body having a proximal section and a distal section, the distal section having a distal tip, the distal section being rotatable relative to the proximal section between a first rotational position and a second rotational position, the first rotational position aligning an advancement plunger with an IOL positioned within the handpiece body, and the second rotational position aligning a deployment plunger with the IOL;
a deployment carriage connected to a proximal end of the deployment plunger and releasably secured at a first position within the handpiece body by a deployment trigger, the deployment carriage comprising a first biasing element that biases the deployment carriage in a distal direction toward the distal tip; and
an advancement carriage connected to a proximal end of the advancement plunger and releasably secured within the handpiece body by an advancement trigger mechanism, the advancement carriage comprising a second biasing element to bias the advancement carriage in the distal direction.

14. The apparatus of claim 13 , wherein the advancement carriage is operative to abut against the deployment carriage after moving in the distal direction.

15. The apparatus of claim 13 , wherein the deployment trigger grips the deployment plunger to prevent distal movement of the deployment carriage, and when pressed, allows the deployment plunger to move in the distal direction.

16. The apparatus of claim 15 , wherein the deployment trigger is inaccessible until the distal section is at the second rotational position relative to the proximal section.

17. A method comprising:
positioning a distal end of an intraocular lens (IOL) insertion apparatus handpiece at a surgical site;
triggering an advancement trigger mechanism that releases an advancement carriage, the advancement carriage having an advancement plunger extending from a distal end, the advancement carriage being biased in a distal direction such that when released, the advancement carriage moves a distal tip of the advancement plunger through a folding chamber to fold an IOL engaged with the distal tip; and
rotating a proximal section of the handpiece with respect to a distal section of the handpiece to align a deployment plunger with the folded IOL; and
actuating a deployment trigger to release a deployment carriage, the deployment carriage having the deployment plunger extending from a distal end, the deployment carriage being biased in the distal direction such that when the deployment trigger is actuated, the deployment carriage causes the deployment plunger to move the folded IOL out of the IOL insertion apparatus.

18. The method of claim 17 , further comprising:
before rotating the proximal section, moving the proximal section away from the distal section; and
after rotating the proximal section, moving the proximal section towards the distal section.

19. The method of claim 17 , further comprising, releasing the deployment trigger during distal movement of the deployment carriage to interrupt the distal movement of the deployment carriage.

Assignees

• Novartis Ag

Inventors

• Fayyaz Asif
• Liu Jian
• Singh Sudarshan B
• Belisle Chris
• Hartsig Bill
• Jang Sam
• Buchanan Tyler
• Munsinger Aaron

Classifications

• A61F2/1667

  with rotatable plungers · CPC title

• A61F2/1672 Primary

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