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Nasolacrimal compression device

A technology for nasolacrimal duct and nasal pads, applied in the field of temporarily blocking the nasolacrimal duct in adult patients, verifying device fit and blocking effectiveness, capable of solving problems that do not provide mobility, are not adjustable, do not have flexibility, features, components and Methods and other issues

Inactive Publication Date: 2017-11-21
陈存
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Limitations of the U-shaped device are that it relies on the user to position the nasolacrimal duct and that it is not adjustable to fit different nasal widths
Furthermore, it does not provide mobility when using the device
[0007] US Patent No. 8147467 B2 to Stephen C. Chen discloses a device for blocking the nasolacrimal duct, but it does not have the required flexibility, features, components and methods to support clinic and / or home use

Method used

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  • Nasolacrimal compression device
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  • Nasolacrimal compression device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The frame of the device is made of plastic-coated soft carbon steel wire and has a skin-contacting portion covered with a non-latex rubber sleeve. The frame of the device is almost identical to the frame of eyeglasses, but is fully adjustable. The device frame width, bridge frame width, nose pad curvature and temporal length can all be adjusted by hand to suit the individual user.

[0026] now refer to figure 1 , which is a side view of a person wearing the device. The device frame has a center point 1 where the curved nose pad sections 2 meet. The curved nose pad section extends to the forehead section 3 and the forehead section extends to the temporal section 4 . The hook and loop fastening strap 5 extends around the back of the person's head.

[0027] now refer to figure 2 , which shows the anatomical site where the device is applied. The nasal pads 2 rest on top of the nasolacrimal duct 6 . The shape of the nose pads is concave to fit the contours of the fac...

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Abstract

A device is used to temporarily compress the nasolacrimal ducts to reduce outflow of eyedrop during and after eyedrop instillation. The device is to be hand bended to snuggly fit any adult head sizes with any facial features so that the nose pads may apply firm pressure over the nasal aspect of the orbital rim where nasolacrimal ducts lay underneath the skin. The pressure delivered by the device is consistent and is controllable by the user. The device includes failure mechanism to protect against excessive pressure. By keeping eyedrops in the eye, medication absorption is improved and bitter taste due to eyedrop outflow is reduced or eliminated. It alleviates the burden of manual nasolacrimal occlusion currently practiced by eye patients and is best for frequent, multiple eyedrops users.

Description

Background technique [0001] The present invention generally relates to medical devices. More specifically, it involves temporarily blocking the nasolacrimal duct (also known as nasolacrimal obstruction) in adult patients to reduce the outflow through the nasolacrimal duct. Gentle pressure on the skin over the nasolacrimal duct is effective in reducing the drainage of tears into the rest of the body system. [0002] Eye drops are topical eye medications that are commonly used to treat eye conditions. The drug is delivered to the eye by absorption. Some eye drops only take a short time for the eye to absorb them, while others take much longer. Ophthalmologists usually advise patients to perform a manual nasolacrimal occlusion maneuver by using the index finger to press on the nasolacrimal duct for 5 minutes during eyedrop instillation to keep the eyedrop in the eye long enough to allow complete absorption. The advantages of this approach have been recognized for many years. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61F9/00772A61B17/1227A61B17/24A61F9/00
Inventor 陈存
Owner 陈存
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