CN201617977U - Stub pin type lacrimal passage support - Google Patents

Abstract

The utility model relates to a stub pin type lacrimal passage support, comprising a soft hollow support, a spherical expansion part, micropores and a smooth obtuse blind end arranged on the support, wherein the support selects high polymer material having good compatibility with biological tissue, the outer diameter of the selected high polymer material is 0.7-1.2mm, the inner diameter thereof is 0.5-1.0mm, the length thereof is 35-45mm and is approximately the length of the lacrimal passage at one side of a patient; one end of the support is spherically expanded, the diameter thereof is 1.5-2.5mm, the center thereof is provided with the micropores and is communicated with a support trunk; the other end of the support is designed to be the smooth obtuse blind end; and the support trunk is provided with three micropores which are respectively distributed at the places of being 3mm, 15mm, and 25mm from the blind end and have the same aperture of 0.5-1.0mm. The stub pin type lacrimal passage support can be used in the ophthalmology department for treating blockage, stenosis or fracture of the lacrimal passage.

Description

Stud formula lacrimal stent

Technical field this utility model relate to a kind of be used for the ophtalmic treatments obstructed lacrimal passage, narrow or the fracture the soft hollow sting of interim lacrimal passage.

Background technology ophtalmic treatments obstructed lacrimal passage, method narrow or fracture mainly are to adopt interim lacrimal stent to implant, and remove lacrimal stent more then after after a while lacrimal passage is shaped and cure.The various lacrimal stents of development are mainly implanted by three kinds of modes at present: one, from descending puncta or going up puncta to the single pathway of the direct motion of nose lacrimal passage opening and implant lacrimal stent, advantage is to implant just letter, shortcoming is: 1, the fixing difficulty of support, the normal adhesive tape sticking that adopts causes that support comes off, skin allergy etc.; 2, influence is attractive in appearance, and the patient is difficult to accept; 3, easily cause puncta to turn up or chap.Its two, from the nose lacrimal passage opening part implant frame that drives in the wrong direction, advantage is not influence outward appearance, shortcoming is: 1, implant difficulty, require the ophthalmologist to grasp the part technology of department of otorhinolaryngology specialty; 2, easy damaged nasal mucosa; 3, the support of most types can only be treated nasolacrimal passage obliteration, and is invalid to obstruction of lacrimal canaliculus.They are three years old, the stealthy lacrimal stent of two pathwaies, advantage: operation is letter just, can take into account full lacrimal passage and be shaped, and keeps puncta dissect physiology position, do not damage nasal mucosa, be convenient to the lacrimal passage administration, the support fixation does not influence outward appearance, shortcoming: can't visit when logical when a side obstruction of lacrimal canaliculus, " one " listed shortcoming just occur.

Summary of the invention this utility model has overcome the deficiency that above-mentioned lacrimal stent exists, lacrimal stent is implanted had following advantage: operation is letter just, can take into account the omnidistance shaping of a side lacrimal passage, keep puncta dissect physiology position, do not damage nasal mucosa, be convenient to the lacrimal passage administration, support is fixing more firm, substantially not influencing outward appearance, is replenishing of the stealthy lacrimal stent of two pathwaies.

The technical scheme that its technical problem that solves this utility model adopts is: select the soft hollow sting of compatible good macromolecular material for use with biological tissue, and external diameter 0.7～1.2mm, internal diameter 0.5～1.0mm, length is about the length 35～45mm of patient's one side lacrimal passage; Support one end sphere is expanded, diameter 1.5～2.5mm, and there is micropore in central authorities, and communicate with the support trunk; The support other end is designed to smooth blunt shape cecum; The support trunk has 3 micropores, is distributed in apart from cecum and is respectively 3mm, 15mm, 25mm place, and the aperture is all 0.5～1.0mm mutually.

The beneficial effects of the utility model are, make the just letter of lacrimal stent implant procedure, can take into account that a side lacrimal passage is omnidistance to be shaped, keep puncta dissect physiology position, do not damage nasal mucosa, be convenient to the lacrimal passage administration, support is fixing more firm, does not influence outward appearance substantially, is replenishing of the stealthy lacrimal stent of two pathwaies.

Description of drawings Fig. 1 is this utility model structural representation; Fig. 2 is that this utility model is implanted patient's lacrimal passage sketch map.

Among Fig. 1, central micropore (1), sphere is expanded (2), soft hollow sting (3), micropore (4,5,6), smooth blunt shape cecum (7).

Among Fig. 2, lacrimal ductule (8), lachrymal sac (9), nasolacrimal duct (10), stud formula lacrimal stent (11).

The specific embodiment further elaborates this utility model below in conjunction with accompanying drawing

For suffering from obstructed lacrimal passage, narrow or rupture patient, after the method for having known with those skilled in the art is visited logical lacrimal passage earlier, No. 5 hollow lacrimal probes to using always then insert sphere and expand portion's central authorities' micropores (1) to smooth blunt shape cecum (7), implant stud formula lacrimal stent (3) to nose lacrimal passage opening from the probing of lacrimal passages method that puncta has been known by those skilled in the art, this moment, the sphere portion of expanding just contacted puncta, limit bracket slips into lacrimal passage, after the confirmation of micropore (6) water filling water conservancy diversion, extract hollow lacrimal probe No. 5, promptly finishing support implants, can also regularly expand central micropore (1) flushing lacrimal passage according to the state of an illness at ordinary times by sphere, and can be through micropore (4,5,6) water conservancy diversion medicinal liquid treatment.

Facts have proved the probing of lacrimal passages method implant frame that the whole implantation process of this utility model all adopts the ophthalmologist to know, do not require that the ophthalmologist grasps the technology of otorhinolaryngology specialty, thus easy and simple to handle quick, accepted by ophthalmologist and patient easily.

Claims (5)

1. stud formula lacrimal stent is characterized in that: comprise that soft hollow sting and the sphere of design on support expand portion, micropore and smooth blunt shape cecum.

2. stud formula lacrimal stent according to claim 1 is characterized in that: support is the compatible good macromolecular material of biological tissue, external diameter 0.7～1.2mm, internal diameter 0.5～1.0mm, length 35～45mm.

3. stud formula lacrimal stent according to claim 1 is characterized in that: support one end sphere is expanded the diameter 1.5～2.5mm of portion, and there is micropore in central authorities, communicate with the support trunk.

4. stud formula lacrimal stent according to claim 1 is characterized in that: each micropore of support trunk is distributed in apart from cecum and is respectively 3mm, 15mm, 25mm place, and the aperture is all 0.5～1.0mm mutually.

5. stud formula lacrimal stent according to claim 1 is characterized in that: support one end is designed to smooth blunt shape cecum.

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