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Lacrimal passage retain tube

A technology for indwelling tubes and lacrimal ducts, applied in catheters, ophthalmic surgery, and other medical devices, to achieve the effects of improving comfort, simple structure, and shortening the adaptation period

Pending Publication Date: 2017-07-28
张建辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above inventions can only achieve a single upper (or lower) lacrimal canaliculus implantation, and all need to be removed through the nasal cavity, causing a series of discomfort or surgical complications for the patient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Please refer to figure 1 Shown, embodiment one of the present invention is:

[0048] A lacrimal indwelling tube, comprising a tube body 1 and a sleeve 2, the sleeve 2 is sleeved on the tube body 1, the sleeve 2 is adapted to the upper part of the tube body 1, and the sleeve 2 includes Sleeve body 3 and clamp 4, the clamp 4 is arranged on the upper end of the sleeve body 3, the material of the tube body 1 is PVC, the material of the sleeve tube 2 is silica gel, the outer diameter of the tube body 1 1.0mm, the thickness of the tube body 1 is 0.3mm, the length of the tube body 1 has two forms of 6.0cm and 3.0cm, the tube body 1 is provided with a scale 7, and the distance between the scales 7 is The end of the tube body 1 away from the casing 2 is a blunt round blind end 9 with a detection hole 8 , and the side wall of the tube body 1 is provided with a seepage hole 10 .

[0049] The tube made of PVC and the casing made of silicone are left in the lacrimal duct after coo...

Embodiment 2

[0050] Please refer to Figure 1-3 , the second embodiment of the present invention is:

[0051] In this embodiment, the pipe body 1 is improved on the basis of the first embodiment. The pipe body 1 includes a pipe body body 5 and an elastic transition section 6, and the transition section 6 is fixed on the upper end of the pipe body body 5. The clip 4 is adapted to the shape of the eyelid arc of a person, and the sleeve 2 is provided with a structural layer for marking the position of the sleeve 2 .

[0052] By setting an elastic transition section to transition to the main body of the cannula, it can adapt to the turning of the lacrimal duct at the lacrimal point, conform to the physiological shape of the lacrimal canaliculus, and facilitate the insertion of the tube body into the lacrimal duct; it is similar to the shape of the arc surface of the human eyelid margin Adapted clip structure, when the clip is fixed on the eyelid margin, improves the comfort of the patient dur...

Embodiment 3

[0053] Please refer to Figure 1-3 , Embodiment three of the present invention is:

[0054] This embodiment is further improved on the basis of Embodiment 2. The transition section 6 includes two supporting columns 61 and a fixing block 62. One end of the supporting columns 61 is fixed on the main body 5 of the pipe body. The supporting columns 61 The other end of the fixed block 62 is fixed on the fixed block 62, which is provided with a through hole 63 corresponding to the opening of the pipe body 5, and the clip 4 is provided with a bayonet that matches the fixed block 62. 41, the pipe body body 5 is integrally formed with the transition section 6, the clip 4 includes a connecting piece 42 and a hook piece 43, the connecting piece 42 is connected to the end of the sleeve body 3, and the hook piece 43 is connected with the connecting piece 42, the hook piece 43 is arc-shaped, and the sleeve main body 3 and the locking piece 4 are integrally formed.

[0055] Both the integr...

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Abstract

The invention relates to the field of ophthalmology department medical apparatuses and instruments, and provides a lacrimal passage retain tube. The lacrimal passage retain tube comprises a tube body and a sleeve. The tube body is sleeved with the sleeve. The sleeve is matched with the upper portion of the tube body. The sleeve comprises a sleeve body and a clamping piece. The clamping piece is arranged at the upper end of the sleeve body. The lacrimal passage retain tube has the advantages that the tube body and the sleeve are matched for use, the tube body enters a lacrimal sac through the lacrimal ductule and is fixed to the margo palpebrae through the clamping piece, the phenomenon that the lacrimal passage retain tube automatically comes off or exits back to the lacrimal passage is avoided, meanwhile, the patient retention period comfort level of the lacrimal passage retain tube is improved, and the adaptive phase is shortened; the lacrimal passage retain tube is directly removed from upper and lower lacrimal points after the lacrimal passage implantable tube retention and does not need to be removed through a nasal cavity, and the lacrimal passage retain tube is convenient to disassemble and easy and convenient to implement, and meanwhile avoids clinic complications; the lacrimal passage retain tube is simple in structure, simple in manufacturing technology and easy to produce.

Description

technical field [0001] The invention relates to the field of ophthalmic medical devices, in particular to a lacrimal indwelling tube. Background technique [0002] The lacrimal duct includes the punctum, canaliculus, lacrimal sac, and nasolacrimal duct. There are one upper and lower lacrimal puncta, located on the papillary protrusion at the inner end of the eyelid margin. The upper lacrimal punctum is slightly inward than the lower lacrimal punctum. Displacement of punctum often causes epiphora. The lacrimal canaliculus is a small tube connecting the lacrimal point and the lacrimal sac. It is divided into the upper lacrimal canaliculus and the lower lacrimal canaliculus. The outer part of each canaliculus is perpendicular to the eyelid margin, and then turns inward at almost a right angle. The two lacrimal canaliculi merge into lacrimal The common duct then opens to the upper part of the lacrimal sac. The lacrimal sac is a membranous sac located in the lacrimal fossa on t...

Claims

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Application Information

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IPC IPC(8): A61F9/007A61M25/00A61M25/04
CPCA61M25/0021A61M25/0043A61M25/04A61F9/00736A61M2210/0612A61M2025/024A61M2025/0213
Inventor 张建辉
Owner 张建辉
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