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Tube device for insertion into lacrimal passage

A technology for intubating tubes and lacrimal ducts, applied in ophthalmic surgery, etc., can solve problems such as inability to ensure safety, inability to conduct water inspection through tubes, and inability to obtain results, and achieve the effect of reducing the risk of penetration

Inactive Publication Date: 2012-07-11
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when performing lacrimal duct insertion, sufficient safety cannot be ensured even with a lacrimal endoscope
The reason is that in order to insert the lacrimal duct after observing the inside of the lacrimal duct with the lacrimal endoscope, the lacrimal endoscope has to be pulled out from the outside, and it is impossible to observe with the lacrimal endoscope while waiting at the correct position already observed. While the monitor is working, the result becomes a blind probe operation and does not get enough effect
[0009] In addition, the end of the pipe is formed as a blind end, and water flow inspection through the pipe cannot be performed.

Method used

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  • Tube device for insertion into lacrimal passage
  • Tube device for insertion into lacrimal passage
  • Tube device for insertion into lacrimal passage

Examples

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manufacture example 1～10

[0075] A predetermined amount of styrene-isobutylene block copolymer (hereinafter SIBS) and polyurethane (Tecoflex EG85A; manufactured by Noveon (Noveon)) was prepared at a weight ratio of 10:90, and a two-screw extruder ( L / D = 40, rotation speed 500 rpm) for mixing. The obtained SIBS / polyurethane mixture having a Shore hardness of 72A was extruded to form a pipe a (inner diameter 0.90 mm-outer diameter 1.3 mm) and a pipe b (inner diameter 0.90 mm-outer diameter 1.4 mm).

[0076] Cut the finished tubes a and b to a specified length, use a SUS core material that is not sharp at the tip, and insert a SUS ring (inner diameter 0.8mm-outer diameter 1.0mm-width and height 0.5mm, SUS304) into the tubes a and b as a reinforcement The hollow part of each tube is arranged at a position of 1 to 1.5 mm from the front end of each tube.

[0077] A core material made of SUS with an outer diameter of 0.49 mm (for holding the tube) was inserted into the hollow portion of the tubes a and b w...

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PUM

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Abstract

A tube device for insertion into a lacrimal passage, optimized according to the structure of a lacrimal passage and capable of being operated without impairing the functional effect of a lacrimal passage endoscope. A tube device for insertion into a lacrimal passage comprises a pair of tubes to be placed in the lacrimal passage. Openings are formed at both ends of the pair of tubes. A reinforcement body is disposed and held in the vicinity of each opening at a position located at a predetermined distance from the opening.

Description

technical field [0001] The invention relates to a lacrimal duct intubation device used in the treatment of lacrimal duct occlusion. Background technique [0002] Treatment of lacrimal duct occlusion causing lacrimation is: (i) probing based lacrimal duct, (ii) placement of cannulation devices within the lacrimal duct, (iii) dacryocystorhinostomy (DCR), (iv) canaliculus formation, (v) nasolacrimal duct formation, and (vi) mobilization of lacrimal ducts, etc. [0003] In the above (i) probing with a lacrimal duct probe, a thin tube called a probe is inserted into the lacrimal duct to open the occluded part and reconstruct the flow path of tear fluid. Since it is easy and less invasive, it is often performed as the first treatment. Although (iii) dacryocystorhinostomy (DCR), (iv) canaliculoplasty, (v) nasolacrimal duct formation, and (vi) lacrimal molluscectomy are effective, due to the need for incision of the face and the Bone perforation, and therefore relatively invasive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61F9/00772
Inventor 深谷浩平中野良二宫内伟一
Owner KANEKA CORP
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