CN113197722A

CN113197722A - Lacrimal passage drainage device and preparation method thereof

Info

Publication number: CN113197722A
Application number: CN202110575483.8A
Authority: CN
Inventors: 张满; 丁钲炜; 蒋宇浩; 杨大春; 王正军
Original assignee: Huaiyin Institute of Technology
Current assignee: Huaiyin Institute of Technology
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-08-03
Anticipated expiration: 2041-05-26
Also published as: CN113197722B

Abstract

The invention discloses a lacrimal duct drainage device and a preparation method thereof. The lacrimal duct drainage device comprises a hollow pipe, one end of the hollow pipe is provided with a curved section, and the curved section is connected with a retainer to prevent the entire lacrimal duct from sinking. The other end of the hollow pipe is provided with a drainage section for preventing the clogging of tears. The method is as follows: preparing a hollow pipe, inserting a mandrel from one end of the hollow pipe, then bending one end of the hollow pipe to prepare a curved section, and then taking out the mandrel; removing the holding part with a diameter larger than the cross-sectional diameter of the hollow pipe and the bending section End connection; vertical or oblique laser cutting of the other end of the hollow pipe to form a drainage section. The curved section of the present invention is more suitable for the physiological structure of the human body, and together with the holding part, it plays a role of preventing subsidence, and the drainage section at the end can prevent clogging to a greater extent. The device has the advantages of simple preparation method, high precision and mass production.

Description

Lacrimal passage drainage device and preparation method thereof

Technical Field

The invention relates to an ophthalmologic medical apparatus and a preparation method thereof, in particular to a lacrimal passage drainage device and a preparation method thereof.

Background

At present, the metal artificial canal of the lacrimal passage is clinically applied, but the structure of the existing metal artificial canal of the lacrimal passage is simpler, mostly in a linear shape, and not in accordance with the physiological structure of a human body, meanwhile, the situations of blockage, sinking and the like of the artificial canal of the lacrimal passage are easy to occur after being implanted into the human body, the clinical effect needs to be improved, and the preparation method of the existing artificial canal of the lacrimal passage is rarely reported. Some lacrimal passage artificial tubes are made by clinicians according to experience and by using an injection needle after cutting a straight line part of a stainless steel tube of the needle, and the method has low precision and is difficult to realize mass production and large-area use.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a lacrimal passage drainage device which is not easy to sink and block;

it is another object of the present invention to provide a method of making a lacrimal drainage device.

The technical scheme is as follows: the lacrimal passage drainage device comprises a hollow pipeline, wherein one end of the hollow pipeline is provided with a bent section, the bent section is connected with a maintaining part for preventing the whole lacrimal passage drainage device from sinking, and the other end of the hollow pipeline is provided with a drainage section for preventing lacrimal fluid from being blocked.

Preferably, the curvature of the curved section is 140-. The bending angle adapts to the physiological structure of the eyes and the nasal cavity of the human body, tears can be better drained from the eyes to the nasal cavity, and meanwhile, the artificial duct can play a certain role in preventing the artificial duct of the lacrimal passage from sinking.

Preferably, the drainage segment is a notch segment formed by cutting the surface of the hollow pipeline vertically or obliquely.

Preferably, the length of the drainage segment is 2-5 mm. The incision of the drainage section can increase the sectional area of the outlet at the tail end of the lacrimal passage artificial tube, and the tail end of the lacrimal passage artificial tube is prevented from being blocked. The length of the drainage section is matched with the diameter of the lacrimal passage artificial tube. When the length is less than 2mm, the anti-blocking effect is weaker. After the length is more than 5mm, the length of the drainage segment is continuously increased due to the small diameter of the artificial canal of the lacrimal passage, and the anti-blocking effect is weakened.

Preferably, the holding portion is a baffle plate having a cross-sectional diameter larger than that of the hollow pipe.

Preferably, the side wall of the drainage segment is provided with a through hole for draining tears.

Preferably, the slant angle of the oblique cutting is 8-20 ° from the horizontal. The oblique cutting can increase the sectional area at the outlet of the tail end of the lacrimal duct artificial tube and prevent the tail end of the lacrimal duct artificial tube from being blocked. The inclination of the oblique cutting is matched with the diameter of the lacrimal passage artificial tube. When the inclination is more than 20 degrees, the anti-blocking effect is weaker. After the inclination is less than 8 degrees, the inclination is continuously reduced because the diameter of the lacrimal passage artificial tube is smaller, and the anti-blocking effect is weakened.

Preferably, the flap is oval.

The preparation method of the lacrimal passage drainage device comprises the following steps:

(A) preparing a hollow pipeline, inserting a core rod into one end of the hollow pipeline, bending one end of the hollow pipeline to prepare a bending section, and taking out the core rod;

(B) connecting a holding part with the section diameter larger than that of the hollow pipeline with the tail end of the bending section;

(C) and performing vertical or oblique laser cutting on the other end of the hollow pipeline to form a drainage section.

Preferably, after step (C), the side wall of the drainage segment is laser-drilled to obtain through holes for draining tears.

Has the advantages that: compared with the prior art, the invention has the following remarkable effects: 1. the bent section on the lacrimal passage drainage device is more suitable for the physiological structure of a human body, and the bent section and the holding part together play a role in preventing sinking, and the drainage section at the tail end of the lacrimal passage drainage device can prevent blockage to a greater extent; 2. the tail end of the lacrimal passage drainage device is provided with the incision and the small hole, thereby increasing the effects of draining tears and preventing blockage. 3. The device has simple preparation method and high precision, and can be produced in batch.

Drawings

FIG. 1 is a schematic view of the lacrimal drainage device with a vertical incision of the present invention;

FIG. 2 is a schematic view of the structure of the lacrimal drainage device having an oblique incision of the present invention;

FIG. 3 is a schematic view of the structure of the holding part of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings.

As shown in fig. 1, the invention discloses a lacrimal passage drainage device, which comprises a hollow pipeline 1, wherein the hollow pipeline 1 is made of stainless steel; one end of the hollow pipeline 1 is provided with a bending section 2, the radian of the bending section 2 is 150 degrees, and the radian of the bending section 2 is preferably between 140 degrees and 160 degrees; the bent section 2 is connected with a holding part 3 for preventing the whole lacrimal passage drainage device from sinking, a welding seam 7 is arranged between the holding part 3 and the bent section 2, and the holding part 3 is a baffle plate with the diameter larger than that of the hollow pipeline 1, as shown in fig. 3, the baffle plate of the embodiment is oval, and can be in other shapes; the other end of the hollow pipeline 1 is provided with a drainage section 4 for preventing tear blockage, the drainage section 4 is a notch section formed by vertically cutting the surface of the hollow pipeline 1, and can also be a notch section formed by obliquely cutting the surface of the hollow pipeline 1, as shown in fig. 2, the oblique cutting inclination is 10 degrees, preferably 8-20 degrees, from the horizontal; the cut by the laser can form a right-angle sharp corner which is ground into a round corner 6, so that the human body is prevented from being scratched; the length of the drainage section 4 is 4mm, and the optimal range is 2-5 mm. In this embodiment, a through hole 5 for draining tears is further opened on the side wall of the drainage segment 4.

(1) firstly, preparing a stainless steel hollow pipeline 1, inserting a core rod into one end of the hollow pipeline 1, then bending one end of the hollow pipeline 1 by using a pipe bending machine to prepare a bent section 2, and then taking out the core rod;

(2) welding an elliptic blocking piece with the section diameter larger than that of the hollow pipeline 1 with the tail end of the bending section 2 by adopting laser, wherein a welding seam 7 is arranged between the elliptic blocking piece and the bending section 2;

(3) taking a position of 4mm from the other end of the hollow pipeline 1 to the pipeline, vertically cutting the hollow pipeline 1 to the axis position of the hollow pipeline 1 by utilizing laser to form a drainage section 4, wherein a cut by the laser can form a right-angle sharp corner which is ground into a fillet 6 to prevent a human body from being scratched; and (3) carrying out laser drilling on the side wall of the drainage section 4 to obtain a through hole 5 for draining tears.

Claims

1. The utility model provides a lacrimal passage drainage device, its characterized in that, includes cavity pipeline (1), the one end of cavity pipeline (1) is equipped with curved segment (2), curved segment (2) are connected with prevents the sunken maintenance portion (3) of whole lacrimal passage drainage device, the other end of cavity pipeline (1) is equipped with drainage section (4) that are used for preventing tear jam.

2. The lacrimal drainage device according to claim 1, wherein the curvature of the curved section (2) is 140 ° and 160 °.

3. The lacrimal drainage device according to claim 1, characterized in that the drainage segment (4) is a notched segment cut perpendicularly or obliquely on the surface of the hollow canal (1).

4. The lacrimal drainage device according to claim 1, wherein the length of the drainage segment (4) is 2-5 mm.

5. The lacrimal drainage device according to claim 1, characterized in that the holding portion (3) is a flap having a cross-sectional diameter larger than a cross-sectional diameter of the hollow canal (1).

6. The lacrimal drainage device according to claim 1, characterized in that the side wall of the drainage segment (4) is provided with a through hole (5) for draining lacrimal fluid.

7. The lacrimal drainage device of claim 3, wherein an inclination of the oblique cut is 8-20 ° from horizontal.

8. The lacrimal drainage device of claim 5, wherein the baffle is elliptical.

9. A method of making the lacrimal drainage device of claim 1, comprising the steps of:

(A) preparing a hollow pipeline (1), inserting a core rod into one end of the hollow pipeline (1), bending one end of the hollow pipeline (1) to prepare a bending section (2), and taking out the core rod;

(B) connecting a holding part (3) with the section diameter larger than that of the hollow pipeline (1) with the tail end of the bending section (2);

(C) and performing vertical or oblique laser cutting on the other end of the hollow pipeline (1) to form a drainage section (4).

10. The method of preparing a lacrimal drainage device according to claim 9, wherein after step (C), the side wall of the drainage segment (4) is laser drilled to obtain through holes (5) for draining tears.