CN219782935U

CN219782935U - Lacrimal passage drainage tube

Info

Publication number: CN219782935U
Application number: CN202321247682.7U
Authority: CN
Inventors: 刘五洲; 肖斌
Original assignee: Xianning Aier Ophthalmology Hospital Co ltd
Current assignee: Xianning Aier Ophthalmology Hospital Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-10-03
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a lacrimal passage drainage tube, which relates to the technical field of medical appliances, and comprises: a first conduit for supporting between the superior punctum and the inferior punctum; the two second guide pipes are respectively arranged at two ends of the first guide pipe and communicated with the first guide pipe, are perpendicular to the first guide pipe and are used for dredging and expanding the lacrimal passage; the two probes are respectively arranged at the end part of the second catheter, which is far away from the first catheter, and are used for pulling the second catheter to be respectively put into the nasolacrimal duct from the upper lacrimal punctum and the lower lacrimal punctum and to be penetrated out from the nasal cavity. The lacrimal passage drainage tube can provide a novel nasolacrimal passage support for lacrimal passage blocking patients and lacrimal sac inflammation patients, accords with the physiological characteristics of the nasolacrimal passage, and has certain stability, practicability and operation safety.

Description

Lacrimal passage drainage tube

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a lacrimal passage drainage tube.

Background

Lacrimal obstruction is a common ophthalmic disease with lacrimal flow as the main symptom, and often occurs in punctum, lacrimal canaliculus, common lacrimal duct and nasolacrimal duct, wherein the common obstruction is common in common lacrimal duct. The lacrimal drainage tube operation is an effective method for treating lacrimal passage obstruction diseases at present, and the operation mode has the advantages of small wound, quick healing, short hospitalization time and low cost for patients, and has the defects of low success rate of operation, false passage formation caused by careless operation, poor healing and serious obstruction.

After the operation of the lacrimal drainage tube, part of patients still have lacrimation symptoms, and more part of patients can be infected to form dacryocystitis, and the phenomena of lacrimation and purulence appear.

Therefore, how to reduce the secondary injury caused by careless operation in the operation, improve the success rate of the operation, and reduce the risk of postoperative infection is a technical problem which needs to be solved by the technicians in the field at present.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a lacrimal drainage tube which can solve the problems of blockage, lacrimation and even purulence of a patient after the lacrimal drainage tube operation is carried out.

In order to achieve the above object, the present utility model provides a lacrimal drainage tube, comprising:

a first conduit for supporting between the superior punctum and the inferior punctum;

the two second guide pipes are respectively arranged at two ends of the first guide pipe and communicated with the first guide pipe, are perpendicular to the first guide pipe and are used for dredging and expanding the lacrimal passage;

the two probes are respectively arranged at the end part of the second catheter, which is far away from the first catheter, and are used for pulling the second catheter to be respectively put into the nasolacrimal duct from the upper lacrimal punctum and the lower lacrimal punctum and to be penetrated out from the nasal cavity.

Wherein the diameter of the first conduit is smaller than the diameter of the second conduit.

The first conduit and the second conduit are hollow conduits, a first small hole is formed in the first conduit, and a second small hole is formed in the second conduit, so that the liquid medicine flows in through the first small hole and flows out of the second small hole.

Wherein, the second catheter is provided with a nasal cavity mark point.

The end part of the second catheter, which is away from the first catheter, is provided with a guide head, and the guide head is used for guiding the second catheter to be inserted into the nasal cavity.

Wherein the guide head is specifically an ellipsoid.

Wherein the first conduit and the second conduit are made of silica gel; and/or the material of the probe is metal.

Compared with the background technology, when the lacrimal duct drainage tube provided by the utility model is required to carry out lacrimal duct placement operation, two second ducts are respectively pulled by two probes arranged at the end parts of the second ducts, the second ducts respectively enter the upper lacrimal canaliculus through the upper lacrimal punctum and the lower lacrimal punctum, the lower lacrimal canaliculus passes through the lacrimal sac area and is pulled out from the front of the nasal cavity, so that the vertical connection part of the first ducts and the second ducts is clamped at the upper lacrimal punctum and the lower lacrimal punctum, and the first ducts and the second ducts can be just embedded at the right angle because of the right angle relation between the lacrimal punctum and the lacrimal canaliculus, wherein the first ducts are exposed at the eyelid; the first conduit and the second conduit which are in vertical connection are embedded by utilizing the vertical right angle relationship of the punctum and the lacrimal canaliculus, so that the stability of the lacrimal passage drainage tube is ensured, and the lacrimal passage drainage tube is prevented from slipping.

By adopting the lacrimal passage drainage tube, the nasolacrimal duct supporting function can be effectively achieved, the problem of a patient with lacrimal passage blockage is solved, meanwhile, the safety and the practicability of operation are improved, and the problem of pus overflowing caused by postoperative infection is effectively avoided.

Furthermore, the diameter of the first conduit is smaller than that of the second conduit, and the conduit can be effectively prevented from slipping due to the diameter difference between the first conduit and the second conduit.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a lacrimal drainage tube structure in an embodiment of the utility model;

FIG. 2 is a schematic view of the structure of the present utility model in an installed state;

wherein:

1-a first conduit, 11-a first aperture;

2-a second catheter, 21-a second orifice, 22-a nasal marker;

3-probe;

4-guide head.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a lacrimal drainage tube, which includes a first catheter 1, two second catheters 2 and two probes 3, wherein the first catheter 1 is used for being fixed between an upper lacrimal punctum and a lower lacrimal punctum, the two second catheters 2 are respectively arranged at two ends of the first catheter 1 and are communicated with the first catheter 1, the two second catheters 2 are perpendicular to the first catheter 1, and the two second catheters 2 are used for dredging and expanding lacrimal passages; the first conduit 1 and the second conduit 2 are vertically connected, so that the fixation can be more stable by utilizing the physiological characteristic that the punctum and the lacrimal canaliculus are in right angle; the two probes 3 are respectively arranged at the end part of the second catheter 2, which is not connected with the first catheter 1, and the two probes 3 are used for pulling the second catheter 2 to be respectively put into the nasolacrimal duct from the upper lacrimal punctum and the lower lacrimal punctum and to pass out from the nasal cavity. Specifically, when a lacrimal duct catheterization operation is required, two second catheters 2 are respectively pulled by two probes 3 arranged at the end parts of the second catheters 2, the two second catheters 2 respectively enter the upper lacrimal canaliculus and the lower lacrimal canaliculus through the upper lacrimal punctum and the lower lacrimal punctum, the two probes 3 pass through the lacrimal sac area and are pulled out from the front of the nasal cavity, so that the vertical connection part of the first catheters 1 and the second catheters 2 is clamped at the upper lacrimal punctum and the lower lacrimal punctum, and the first catheters 1 and the second catheters 2 can be just embedded at the right angle due to the right angle relation between the lacrimal punctum and the lacrimal canaliculus and the diameter difference between the lacrimal punctum and the lacrimal canaliculus, wherein the first catheters 1 are exposed at the eyelid; the first conduit 1 and the second conduit 2 which are in vertical connection are embedded by utilizing the vertical right angle relation between the punctum and the lacrimal canaliculus and the diameter difference between the punctum and the lacrimal canaliculus, so that the stability of the lacrimal drainage tube is ensured.

The lacrimal passage drainage tube that adopts the mode to set up can effectually expand the nasolacrimal duct, convenient operation is reasonable moreover, and it is convenient to get the pipe after the postoperative resumes, directly from the first pipe 1 department of nose side both can, and the postoperative recovery period regularly gives the nasolacrimal duct washing or the medicine washes and can reduce the inflammation and take place, promotes to resume.

Further, the diameter of the first catheter 1 is smaller than the diameter of the second catheter 2, and the diameter of the second catheter 2 is larger than the diameter of the punctum.

It will be appreciated that a person's punctum typically has a diameter of about 0.2-0.3mm and can expand 5 times, a person's lacrimal canaliculus typically has a diameter of about 0.5-0.8mm and can expand 3 times, a horizontal portion of about 8mm and a vertical portion of about 1-2mm. Wherein the diameter of the first conduit 1 may be set to about 2mm, and the two second conduits 2 are thicker than the first conduit 1 by a factor of about 5mm. In this embodiment, the first catheter 1 and the second catheter 2 are both larger than the diameter of the punctum for a certain expansion effect, and not larger than the limiting expansion diameters of the punctum and the lacrimal canaliculus. Specifically, the second catheter 2 penetrates into the lacrimal canaliculus from the upper lacrimal punctum and the lower lacrimal punctum, and the second catheter 2 is thick by penetrating through the lacrimal punctum and the lacrimal canaliculus, has a certain expansion effect on the lacrimal passage, and can better prevent the lacrimal passage from retrograde slipping.

So set up, after the second pipe 2 passes the upper punctum and lower punctum, the first pipe 1 will pass the upper punctum and lower punctum, and embed in punctum, because the diameter of the first pipe 1 is smaller than the diameter of the second pipe 2, the diameter of punctum will shrink again after passing the second pipe 2, but the diameter of punctum inserts the first pipe 1, the diameter of punctum will shrink to the diameter of the first pipe 1, this diameter is smaller than the diameter of the second pipe 2, therefore utilize the diameter difference of first pipe 1 and second pipe 2, will make the pulling out of the second pipe 2 more difficult, make the second pipe 2 fix more firmly, further reduce the retrograde falling risk of lacrimal drainage tube. In addition, the first catheter 1 is exposed to the eyelid when the installation is completed, the diameter of the first catheter 1 is small, and the first catheter is not abducted, is hidden deeper at the inner canthus, so that the stimulus to the eyeball can be reduced.

Further, the first conduit 1 and the second conduit 2 are hollow conduits, two first small holes 11 are formed in the first conduit 1, and a second small hole 21 is formed in the second conduit 2, so that liquid can flow in from the first small hole 11 and flow out from the second small hole 21 conveniently.

Specifically, after surgical installation, the first conduit 1 of the lacrimal drainage tube passes through the punctum, the second conduit 2 passes through the lacrimal canaliculus and the lacrimal sac, ending in the nasolacrimal duct; in this embodiment, two first apertures 11 in the first catheter 1 are at the superior and inferior punctum, respectively, and a second aperture 21 in the second catheter 2 is in the lacrimal sac region.

By the arrangement, medicine can be dripped from the first small hole 11 reserved at the punctum on the first catheter 1, the medicine can flow to the lacrimal sac area from the second small hole 21 through the second catheter 2 and enter the nasal cavity, and tear in the lacrimal sac area can flow out from the first small hole 11 at the punctum through the second small hole 21, so that better anti-inflammatory effect can be achieved, inflammation is reduced, healing is promoted, and operation effect is enhanced.

The number and size of the first holes 11 and the second holes 21 may be adjusted according to the actual situation, and are not particularly limited herein.

Further, a nasal cavity marking point 22 is provided on the second catheter 2, and is used for marking the position of the second catheter 2 placed in the nasal cavity and cutting off the second catheter 2 at the nasal cavity marking point 22.

It will be appreciated that the operation mode of this embodiment is the same as the conventional operation mode, and the probe 3 is used to guide the lacrimal drainage tube to be respectively put into the nasolacrimal duct from the upper lacrimal punctum and the lower lacrimal punctum, and the right-angle structure formed by the two first catheters 1 and the second catheters 2 is pulled out from the front of the nasal cavity to be clamped in the space formed by the lacrimal punctum and the lacrimal canaliculus, and the lacrimal drainage tube is sheared off at the marking point 22 of the nasal cavity without knotting.

In addition, for the patients with simple punctum obstruction and lacrimal canaliculus obstruction and patients with lacrimal manifold obstruction, the patients can be cut before the second small hole 21, and after the probing of the probing small point or lacrimal canaliculus and lacrimal manifold, the vertical connecting part of the first conduit 1 and the second conduit 2 is clamped and embedded in the vertical space formed by the lacrimal punctum and the lacrimal canaliculus, so that the operation on the nasolacrimal duct can be reduced, and the lower end false duct caused by the surgical iatrogenicity is reduced, and the rest part of the lacrimal duct, especially the lower end of the nasolacrimal duct is damaged.

By the arrangement, according to the actual situation of lacrimal passage blockage of each patient, the lower end of the nasolacrimal duct is blocked, a nasal cavity mark point 22 is made in advance at the most suitable position of the patient according to a part of operation, the nasal cavity mark point 22 is directly cut after the operation is finished, redundant parts are removed, and knotting is not needed, so that comfortable length can be reserved, and the influence on the nasal cavity is reduced; the good lacrimal passage obstruction of the lower end of the nasolacrimal duct is operated according to two parts, the part of the drainage tube catheter 2 is sheared off at a proper distance, after the lacrimal passage obstruction part is probed, the drainage tube is respectively put into the lacrimal canaliculus from the upper lacrimal punctum and the lower lacrimal punctum until reaching the end of the lacrimal manifold and penetrating into the lacrimal sac.

The position of the nasal cavity mark point 22 is behind the second small hole 21, and the second small hole 21 is prevented from being subtracted after the completion of the installation of the lacrimal drainage tube.

Further, the end of the second catheter 2, to which the first catheter 1 is not connected, is connected with a guiding head 4 for guiding the insertion of the second catheter 2 into the nasal cavity.

It will be appreciated that when the lacrimal drainage tube is installed, it is difficult to directly insert the second catheter 2, the lacrimal passage is not easy to be damaged at the vertical space formed by the lacrimal punctum and the bent part inside the lacrimal passage, and the guide head 4 is arranged at the end of the second catheter 2 to guide the insertion of the second catheter 2, so that the insertion is smoother and the damage of the second catheter 2 to the lacrimal passage is reduced.

Further, the guide head 4 is specifically an ellipsoid. It can be understood that the ellipsoid is small at both ends, the middle part is big, and both ends are little to be convenient for guide the insertion of second pipe 2, and the middle part is big, can play the effect of expansion lacrimal passage, and the entering of second pipe 2 behind of being convenient for also is difficult to scratch the lacrimal passage inner wall and causes the damage, and the setting is the damage that has not only avoided the lacrimal passage like this, has reduced and has caused the holiday because of the operation iatrogenicity, still makes the insertion of second pipe 2 more laborsaving convenience.

It should be noted that, for a more reasonable design, the maximum diameter of the middle portion of the guide head 4 should be slightly larger than the outer diameter of the second catheter 2, and the specific size of the guide head 4 is not specifically limited here, so long as the above requirements can be satisfied without damaging the nasal cavity.

Further, the materials of the first conduit 1 and the second conduit 2 are silica gel, and the material of the probe 3 is metal.

It will be appreciated that the first and second catheters 1, 2 need to be flexible during insertion into the lacrimal passage to accommodate the course of the lacrimal passage, which is not a straight line or a fixed course, and that each patient's lacrimal passage has a slight difference, so that the first and second catheters 1, 2 must be soft, since the first and second catheters 1, 2 are inside the human body, the materials are harmless to the human body, and that the first and second catheters 1, 2 are made of silicone materials. The probe 3 is required to be drawn to insert the second catheter 2, the lacrimal passage drainage tube is generally a hose, the blocked lacrimal passage cannot be directly dredged to realize the installation of the lacrimal passage drainage tube, and the probe 3 with certain hardness is required to realize the installation of the lacrimal passage drainage tube, so that the probe 3 is made of metal.

Further, the probe 3 is provided inside the end of the second catheter 2 not connected to the first catheter 1 by the connection guide head 4.

It will be appreciated that the probe 3 acts directly on the lacrimal passage to facilitate damage to the lacrimal passage or damage to tissue cells of the lacrimal passage, and that the probe 3 is nested inside the second catheter 2 by being connected to the guide head 4, so that the insertion of the second catheter 2 is pulled, direct contact of the probe 3 with the lacrimal passage is avoided, and damage or irritation to the lacrimal passage is reduced.

In this embodiment, the second catheter 2 is long enough to satisfy the installation of the lacrimal drainage tube and the installation of the probe 3.

In summary, the lacrimal passage drainage tube provided in this embodiment includes the first catheter 1, the second catheter 2 and the probe 3 are both two, wherein the first catheter 1 is vertically connected with one end of the second catheter 2, and thus the physiological characteristics of the lacrimal passage drainage tube in vertical relation with the lacrimal canaliculus are met, so that the lacrimal passage drainage tube can be firmly inlaid in the eyelid without falling off; in addition, the first conduit 1 and the second conduit 2 are hollow round tubes made of silica gel, the first conduit 1 is respectively provided with a first small hole 11 at the upper lacrimal punctum and the lower lacrimal punctum, the second conduit 2 is provided with a small number of second small holes 21 at the lacrimal sac area, and a patient can drip medicine at the lacrimal punctum, flow into the second conduit 2 through the first small holes 11 and flow out from the second small holes 21, so that better anti-inflammatory effect can be achieved, and occurrence of recurrence and inflammation is reduced; the probe 3 is made of metal and is connected to the guide head 4, the guide head 4 is connected with one end of the second catheter 2 which is not connected with the first catheter 1, the probe 3 is nested in the second catheter 2 through the guide head 4, and the second catheter 2 is pulled to be inserted from the upper lacrimal punctum and the lower lacrimal punctum and pulled out from the nasal cavity; the nasal cavity mark points 22 are made at the corresponding positions of the nasal cavity of the patient and cut off from the nasal cavity mark points, so that the comfortable length of the nasal cavity can be reserved, the influence on the nasal cavity is reduced, and the nasal cavity can be firmly fixed in the nasal cavity without knotting. By adopting the arrangement mode, various problems of lacrimal passage blockage can be effectively solved, secondary damage caused by careless operation in operation is reduced, the success rate of operation is improved, and the risk of postoperative infection is reduced.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. A lacrimal drainage tube, comprising:

a first conduit (1) for supporting between an upper punctum and a lower punctum;

the two second guide pipes (2) are respectively arranged at two ends of the first guide pipe (1) and are communicated with the first guide pipe (1), the two second guide pipes (2) are perpendicular to the first guide pipe (1), and the two second guide pipes (2) are used for dredging and expanding the lacrimal passage;

the two probes (3) are respectively arranged at the end parts of the second catheter (2) deviating from the first catheter (1), and the two probes (3) are used for pulling the second catheter (2) to be respectively put into the nasolacrimal duct from the upper punctum and the lower punctum and to pass out from the nasal cavity.

2. The lacrimal drainage tube according to claim 1, wherein the diameter of the first catheter (1) is smaller than the diameter of the second catheter (2).

3. The lacrimal drainage tube according to claim 1, wherein the first catheter (1) and the second catheter (2) are hollow catheters, a first small hole (11) is provided on the first catheter (1), and a second small hole (21) is provided on the second catheter (2) so that the liquid medicine flows in through the first small hole (11) and flows out of the second small hole (21).

4. The lacrimal drainage tube according to claim 1, wherein the second catheter (2) is provided with a nasal cavity marking point (22).

5. The lacrimal drainage tube according to claim 1, characterized in that an end of the second catheter (2) facing away from the first catheter (1) is provided with a guide head (4), the guide head (4) being used for guiding the insertion of the second catheter (2) into a nasal cavity.

6. Lacrimal drainage tube according to claim 5, characterized in that the guiding head (4) is in particular an ellipsoid.

7. The lacrimal drainage tube according to any of claims 1-6, wherein the material of the first catheter (1) and the second catheter (2) is silica gel; and/or the material of the probe (3) is metal.