Insertion and extraction tools for lacrimal implants

A technology for inserting tools and implants, used in applications, medical science, surgery, etc., and can solve problems such as easy falling out, insertion into puncta, and difficulty in removal

Inactive Publication Date: 2011-02-09
QLT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this approach may provide some improvement over eye drops, some potential problems with this approach may include: implanting the implant at the desired tissue location, maintaining the implant at the desired tissue location, and Therapeutic level prolonged release agent
[0011] One problem with using lacrimal implants such as punctal plugs is the difficulty of inserting them into the punctum
The implants are very small and cannot be inserted all the way into the punctum, making them easy to fall out
The implant can also be difficult to remove from the puncta

Method used

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  • Insertion and extraction tools for lacrimal implants
  • Insertion and extraction tools for lacrimal implants
  • Insertion and extraction tools for lacrimal implants

Examples

Experimental program
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Embodiment Construction

[0129] Figure 1A and 1B The anatomy of an eye 2 suitable for treatment with an implant according to one embodiment of the invention is shown. Eye 2 includes cornea 4 and iris 6 . The sclera 8 surrounds the cornea 4 and iris 6 and appears white. The conjunctival layer 9 is substantially transparent and lies on the sclera 8 . The lens 5 is located in the eye. The retina 7 is located near the back of the eye 2 and is normally sensitive to light. The retina 7 includes a fovea 7F that provides high visual acuity and color vision. Cornea 4 and lens 5 refract light to form an image on fovea 7F and retina 7 . The refractive power of the cornea 4 and lens 5 contribute to the formation of an image on the fovea 7F and retina 7 . The relative positions of the cornea 4, lens 5 and fovea 7F are also very important for image quality. For example, if the axial length of the eye 2 from the cornea 4 to the fovea 7F is large, the eye 2 may be nearsighted. Also, during eye accommodation,...

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PUM

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Abstract

Insertion and extraction tool, systems and methods for use with lacrimal implants. An insertion tool is disclosed that includes a tool body having a distal portion configured to hold an implant on an outer implant surface, the distal portion having in inner lumen with an internal depth stop, and a plunger slidable within the inner lumen to engage and dispense the implant, the plunger having a stop configured to engage with the internal depth stop, wherein the engagement of the stop and internal depth stop limits the depth of insertion of the implant into the punctum.

Description

[0001] claim priority [0002] This non-provisional application in part claims priority under 35 USC Part 119(e) to US Provisional Patent Application No. 60 / 970,840 filed September 7, 2007. [0003] Cross References to Related Applications [0004] This application is related to the following documents: U.S. Patent Application No. 11 / 695,537, filed April 2, 2007, and entitled "Drug Delivery Methods, Structures, and Compositions for the Lacrimal System"; U.S. Patent Application No. 11 / 695,545 for "Lacrimal Drainage System Implants for Drug Therapy"; U.S. Patent Application No. .60 / 970,696; U.S. Patent Application No. 60 / 970,720, filed September 7, 2007, entitled "Manufacture of an Inflatable Lacrimal Drainage System Implant"; U.S. Patent Application No. 60 / 970,699, filed September 7, 2007, entitled "System and Method for Testing Lacrimal Devices" / 970,807; and U.S. Patent Application No. 60 / 970,820, entitled "Multiple Drug Delivery Systems and Combination Drugs with Punctal Im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61B2019/306A61F9/00772A61B17/3468A61B2090/036
Inventor 小E·德胡安C·J·赖克S·博伊德A·R·拉帕茨基R·W·希米祖V·鲁宾奇克C·R·谢尔伯特恩
Owner QLT INC
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