CN202637196U

CN202637196U - Lacrimal passage support with adjustable thickness

Info

Publication number: CN202637196U
Application number: CN 201220198815
Authority: CN
Inventors: 毕燕龙; 周祁; 毕婉蓉; 杜飞
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2012-05-07
Filing date: 2012-05-07
Publication date: 2013-01-02
Anticipated expiration: 2022-05-07

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a lacrimal passage support with an adjustable thickness. The lacrimal passage support is composed of a head balloon, a balloon threading tunnel, a body balloon, a non-swelling water injection tube, a water injection port and a water injection port cap, wherein the head balloon is of an annular structure, the body balloon is of a cylindrical structure with a hollow middle, one side of the body balloon is connected with the head balloon, the other side of the body balloon is connected with one end of the non-swelling water injection tube, the other end of the non-swelling water injection tube is provided with the water injection port, and the water injection port is provided with the water injection port cap; and the balloon threading tunnel is arranged on the head balloon. The six parts are of an all-in-one design. After the support is built in a lacrimal passage from inferior nasal meatus by means of reversely building a catheter in the lacrimal passage, the lacrimal passage is expanded by virtue of injecting normal saline or air, and the thickness of the support is changed by adjusting the injection amount, thus being beneficial to drainage for the inflammatory substance rinsing of the lacrimal passage and adjustment for the sphincter function of the lacrimal passage. The lacrimal passage support disclosed by the utility model is practical, convenient, and simple in operation, and is the treatment principle for obstructive lacrimal passage diseases.

Description

A kind of lacrimal stent of scalable thickness

Technical field

This utility model belongs to clinical treatment ophthalmology technical field, is specifically related to a kind of lacrimal stent of scalable thickness.

Background technology

Often adopt for some Lacrimal Passage Blocks clinically and place the justice pipe in the nose lacrimal passage, namely the mode of support is treated.The support of placing can be played a supporting role, thus the lacrimal passage that expansion blocks, and the general support of placing gets final product tube drawing in 2 ~ 3 months after surgery.Behind the tube drawing as at once go irrigation of lacrimal passage, most people can be unobstructed, but again secondary stricture and cause excessive tear (namely as the saying goes " dropping tears ") of lacrimal passage also can occur rear portion people several weeks.Analyze again the reason of secondary stricture, have following some: 1, although the support short-term can be expanded original narrow lacrimal passage, but the lacrimal passage of this obstruction often is accompanied by chronic inflammation, during putting pipe, be in the state of complete closed owing to lacrimal passage, inflammation tends to further increase the weight of, and can cause the again secondary stricture behind the tube drawing.2, lacrimal passage is for having elastic mucosa tubular tissue, and partial portion has contractile function, although clinical lacrimal stent shape and Various Functions commonly used all do not possess the function of " scalable thickness ".This means that lacrimal passage will be lost regulating power in 2 ~ 3 months of placing rack, may be one of major reason of secondary stricture again behind the tube drawing.

There is no at present the adjustable lacrimal stent product of thickness or patent both at home and abroad occurs.

Summary of the invention

The purpose of this utility model is to provide a kind of and regulates the Novel lacrimal support of thickness by the amount of controlling the normal saline of injecting.Different according to individual obstructed lacrimal passage degree, the injection volume of normal saline is the amount doesn't matter, thereby regulates the inside diameter of lacrimal passage, though the adjusting of this passive lacrimal passage official jargon also can keep the intrinsic easypro contracting elasticity of lacrimal passage inwall to a certain extent not as active adjustment.The important part of another tool clinical meaning of the design is, attenuates by making the support of placing, and can vacate segment space, can wash lacrimal passage by puncta, thereby be conducive to the removing of Inflammatory substances in the lacrimal passage.

The lacrimal stent of the scalable thickness that the utility model proposes (Fig. 1-3), formed by head sacculus 1, sacculus threading tunnel 2, body capsule 3, the water injection pipe 4 that do not expand, water filling port 5 and water filling port cap 6, wherein: head sacculus 1 is circular ring structure, body capsule 3 is the hollow cylindrical structure in middle part, body capsule 3 one sides connect head sacculus 2, opposite side connects water injection pipe 4 one ends that do not expand, and water injection pipe 4 other ends that do not expand are water filling port 5, and are provided with water filling port cap 6; Head sacculus 1 is provided with sacculus threading tunnel 2.

The design that is formed in one of head sacculus 1 of the present utility model, sacculus threading tunnel 2, body capsule 3, the water injection pipe 4 that do not expand, water filling port 5 and water filling port cap 6 parts.Except the water injection pipe 4 that do not expand is made by the rigid silica gel that do not expand, remainder is made by inflatable silica gel, inflatable silica gel material can be with reference to the silica gel material of widely used department of plastic surgery " skin dilator ", has stable intrinsic profile, high level expansion, the advantage such as low, easy sterilization of cracky, immunogenicity not.This utility model can be used among the treatment of ophthalmology Lacrimal Passage Block.

The beneficial effects of the utility model are:

1, by the next passive easypro contracting nose lacrimal passage tube wall of the enlargement and contraction of lacrimal stent, namely be tending towards organizing again of adhesion and loosen, can excite again the potential regulatory function of lacrimal passage smooth muscle.

2, attenuate by regulating lacrimal stent, can be the lacrimal passage vacating space, thereby be convenient to through lacrimal point lacrimal passage be washed, be conducive to Inflammatory substances and discharge.

Description of drawings

Fig. 1 is structural diagrams of the present utility model.

Fig. 2 is that sectional side view of the present utility model shows.

Fig. 3 is the structural diagrams of this utility model after the injecting normal saline expansion.

Number in the figure: 1 is the head sacculus, and 2 is sacculus threading tunnel, and 3 is the body capsule, and 4 are the water injection pipe that do not expand, and 5 is water filling port, and 6 is the water filling port cap.

The specific embodiment

Further describe by reference to the accompanying drawings this utility model below by embodiment.

Embodiment 1: the lacrimal stent of the scalable thickness that this utility model proposes is comprised of head sacculus 1, sacculus threading tunnel 2, body capsule 3, the water injection pipe 4 that do not expand, water filling port 5 and water filling port cap 6.The design that is formed in one of this 6 part.Except do not expand water injection pipe 4 and water filling port cap 6 are made by the rigid silica gel that do not expand, remainder is made by inflatable silica gel, inflatable silica gel material can be with reference to the silica gel material of widely used department of plastic surgery " skin dilator ", has stable intrinsic profile, high level expansion, the advantage such as low, easy sterilization of cracky, immunogenicity not.

The total length of this support is 6 ~ 6.5 cm, and wherein the wide diameter of long 10 mm of head sacculus 1, sacculus central part is 5 mm; Sacculus threading tunnel is positioned at the top of sacculus, and tunnel diameter is 2 mm, long 3 mm in tunnel; Body capsule 3 length are that 30 mm, outer diameter homogeneous are 3 mm, and inner diameter is 2 mm; Water injection pipe 4 outer diameters that do not expand also are 3 mm, inner diameter 2 mm, and length is 20 ~ 25 mm, can specifically select according to patient's inferior nasal meatus length.Water filling port cap 6 for can with the piston of tube chamber tabling in the water injection pipe that do not expand, be to be integrally connected molding by silicone band and the water injection pipe outer wall that do not expand.But the consumptive material PCR pipe that the connection of this cap and use reference laboratories are commonly used connects closely non-leakage feature after having buckle closure.This support can tolerate 140 degree high temperature, though but Reusability behind the cleaning and sterilizing, but still suggestion is used as disposable material.

Described parts connect by mode shown in Fig. 1-3, and these those skilled in the art all can implement smoothly.

Claims

1. the lacrimal stent of a scalable thickness, by head sacculus (1), sacculus threading tunnel (2), body capsule (3), water injection pipe (4) does not expand, water filling port (5) and water filling port cap (6) form, it is characterized in that: head sacculus (1) is circular ring structure, body capsule (3) is the hollow cylindrical structure in middle part, body capsule (3) one sides connect head sacculus (2), opposite side connects water injection pipe (4) one ends that do not expand, water injection pipe (4) other end that do not expand is water filling port (5), and is provided with water filling port cap (6); Head sacculus (1) is provided with sacculus threading tunnel (2).