CN204246277U

CN204246277U - Nasolacrimal drainage stent

Info

Publication number: CN204246277U
Application number: CN201420696600.1U
Authority: CN
Inventors: 周华; 周凌冰
Original assignee: CHONGQING DEGU TECHNOLOGY Co Ltd
Current assignee: CHONGQING DEGU TECHNOLOGY Co Ltd
Priority date: 2014-11-19
Filing date: 2014-11-19
Publication date: 2015-04-08
Anticipated expiration: 2024-11-19

Abstract

This utility model provides a kind of nasolacrimal drainage stent, comprise drain body, draw internal fluid and offer drainage lumens, described drain body top is provided with the drainage disc for contacting with lachrymal gland, described drainage disc upper surface is plane, drainage disc offers multiple conduction hole be communicated with drainage lumens, described drain body bottom is connected with drain arm, and this drain arm is connected with described drainage lumens.This utility model, is contacted with human body lachrymal gland by drainage disc, enlarge active surface, is convenient to draw tear, and liquid is discharged through drain arm after entering drainage lumens by conduction hole, and drainage channel air-flow is unobstructed, and drainage effect is good.

Description

Nasolacrimal drainage stent

Technical field

This utility model relates to medical apparatus technical field, particularly a kind of nasolacrimal drainage stent.

Background technology

Obstructed lacrimal passage is that one often occurs in lacrimal point, lacrimal ductule, lachrymal sac and nasolacrimal duct intersection and nasolacrimal duct end opening, and the disease glass nasolacrimal duct lower end being cardinal symptom with excessive tear is an Anatomicstenosis section, and blocking appears in the impact being subject to nasal cavity pathological changes.Lacrimal passage initial part (lacrimal point, lacrimal ductule, tear house steward) caliber is carefully narrow, and location tables is shallow, and communicates with near conjunctival sac, be easily subject to inflammation, wound impact and block.

The method that current treatment obstructed lacrimal passage is conventional implements nasolacrimal anastomosis operation, lacrimal passage intubation operation, lacrimal stent operation etc.; In nasolacrimal anastomosis operation, normally between lachrymal sac and nasal cavity, set up new passage, replace the nasolacrimal duct blocked with the silica gel support of drain tear with drainage stent.Do otch by nearly medial canthal skin during operation, chorista, to fossa for lacrimal sac, does bone hole, cut-out lachrymal sac and nasal mucosa, and make tear and secretions enter nasal cavity via new drainage channel, the method is tending towards shaping and is widely used in clinical.But because of material restriction and the unreasonable operation technique that causes of structural design loaded down with trivial details not good with drainage effect.

Utility model content

The deficiencies in the prior art in view of the above, the purpose of this utility model is to provide a kind of rational in infrastructure, the nasolacrimal drainage stent that drainage effect is good.

For achieving the above object and other relevant objects, this utility model provides a kind of nasolacrimal drainage stent, comprise drain body, draw internal fluid and offer drainage lumens, described drain body top is provided with the drainage disc for contacting with lachrymal gland, and described drainage disc upper surface is plane, drainage disc offers multiple conduction hole be communicated with drainage lumens, described drain body bottom is connected with drain arm, and this drain arm is communicated with described drainage lumens.

The drainage device of this structure, is contacted with human body lachrymal gland by drainage disc, increases the contact area with lachrymal gland, and plane laminating closely, is convenient to draw tear, and liquid is discharged through drain arm after entering drainage lumens by conduction hole, and drainage channel air-flow is unobstructed, and drainage effect is good.

As preferably: described drain body is up big and down small pyramidal structure, and described drainage lumens is up big and down small conical cavity, and described drainage disc is arranged on drain body upper end, and covers described drainage lumens.The drain of cone-shaped cavity lower end can produce suction when propping up Tube Drain, is convenient to drain.

As preferably: the conduction hole diameter at described drainage disc center is greater than other conduction hole diameters on drainage disc.

As preferably: the diameter of described conduction hole is 1mm to 2mm.

As preferably: described drain arm is two, and two drain arms are symmetricly set on drain body lower end.

As preferably: two drain arms are symmetrical arranged, make the drainage channel that is made up of conduction hole, drainage lumens and drain arm more unobstructed, can prevent single arm air-flow from having some setbacks and blocking.

As preferably: the internal diameter of described drain arm is 1mm to 1.5mm.

As preferably: the junction rounding off of described drain arm and drain body.

As preferably: rounding off between described conduction hole and drainage disc upper surface, the junction rounding off of described drainage disc and drain body.

As preferably: this structure can improve the comfort level of fitting with tissue

As preferably: described drain body, drainage disc and drain arm are made up of silica gel, and one-body molded.Integrated formed structure is more firm.

As mentioned above, the beneficial effects of the utility model are: the drainage stent of this structure, are contacted with human body lachrymal gland by drainage disc, on the one hand enlarge active surface, be convenient to draw tear, rounding off between all parts, make to decrease between drainage stent and tissue and interfere and repel sense, comfort level is higher, tear is discharged through drain arm after entering drainage lumens by conduction hole, two drain arms become to be symmetrical arranged, and make drainage channel air-flow more unobstructed, prevent blocking.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model embodiment;

Fig. 2 is the front view of this utility model embodiment;

Fig. 3 is A direction view in Fig. 2;

Fig. 4 is the top view of Fig. 2.

Piece mark explanation

1 drain body

2 drainage discs

3 conduction holes

4 drain arms

5 drainage lumens

Detailed description of the invention

By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present utility model and effect easily.

As shown in Figures 1 to 4, this utility model provides a kind of nasolacrimal drainage stent, comprise the taper drain body 1 that large bottom, top is little, drain body 1 inside offers the taper drainage lumens 5 that aperture from top to bottom reduces gradually, drain body 1 upper end is provided with the drainage disc 2 for contacting with lachrymal gland, drainage disc 2 covers described drainage lumens 5, drainage disc 2 surface offers multiple conduction hole be communicated with drainage lumens 5, this conduction hole is uniformly distributed on drainage disc 2, described drain body 1 bottom is connected with two drain arms 4, two drain arms 4 are in 180 degree of settings, and be connected with described drainage lumens 5.

In this example, in order to make drainage device and lachrymal gland fitting area larger, and it is more comfortable, drainage disc 2 upper surface is plane, the junction rounding off of drain arm 4 and drain body 1, the end rounding off of drain arm 4, the conduction hole diameter at drainage disc 2 center is greater than other conduction hole diameters on drainage disc 2, the diameter of described conduction hole is 1mm to 2mm, in this example, the conduction hole diameter at drainage disc 2 center is 2mm, all the other conduction holes are 1.5mm, the internal diameter of drain arm 4 is 1mm to 1.5mm, the height of drainage device entirety is between 5mm to 7mm, in order to drainage stent structure is more stable in this example, drain body 1, drainage disc 2 and drain arm 4 are made up of silica gel, and it is one-body molded.

The drainage stent of this structure, contacted with human body lachrymal gland by drainage disc 2, enlarge active surface, is convenient to draw tear, rounding off between all parts, make to decrease between drainage stent and tissue and interfere and repel sense, comfort level is higher, and tear is discharged through drain arm 4 after entering drainage lumens 5 by conduction hole, and two drain arms 4 one-tenth are symmetrical arranged, make drainage channel air-flow more unobstructed, prevent blocking.

Above-described embodiment is the principle of illustrative utility model and effect thereof only, but not for limiting this utility model, any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or change.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that this utility model discloses, must be contained by claim of the present utility model.

Claims

1. a nasolacrimal drainage stent, it is characterized in that: comprise drain body, draw internal fluid and offer drainage lumens, described drain body top is provided with the drainage disc for contacting with lachrymal gland, described drainage disc upper surface is plane, drainage disc offers multiple conduction hole be communicated with drainage lumens, described drain body bottom is connected with drain arm, and this drain arm is communicated with described drainage lumens.

2. nasolacrimal drainage stent according to claim 1, is characterized in that: described drain body is up big and down small pyramidal structure, and described drainage lumens is up big and down small conical cavity, and described drainage disc is arranged on drain body upper end, and covers described drainage lumens.

3. nasolacrimal drainage stent according to claim 1, is characterized in that: the conduction hole diameter at described drainage disc center is greater than other conduction hole diameters on drainage disc.

4. nasolacrimal drainage stent according to claim 1, is characterized in that: the diameter of described conduction hole is 1mm to 2mm.

5. nasolacrimal drainage stent according to claim 1, is characterized in that: described drain arm is two, and two drain arms are symmetricly set on drain body lower end.

6. nasolacrimal drainage stent according to claim 1, is characterized in that: the internal diameter of described drain arm is 1mm to 1.5mm.

7. nasolacrimal drainage stent according to claim 1, is characterized in that: the junction rounding off of described drain arm and drain body.

8. nasolacrimal drainage stent according to claim 1, is characterized in that: rounding off between described conduction hole and drainage disc upper surface.

9. nasolacrimal drainage stent according to claim 1, is characterized in that: described drain body, drainage disc and drain arm are made up of silica gel, and one-body molded.