CN219501346U - Snare for scooping lower end of lacrimal drainage tube from nasal cavity in lacrimal passage catheterization operation - Google Patents

Abstract

The utility model relates to a snare for scooping the lower end of a lacrimal drainage tube from a nasal cavity in a lacrimal passage catheterization operation, which comprises a handle and a fusiform guide wire ring fixedly connected with the front end of the handle, wherein the long diameter of the fusiform guide wire ring is consistent with the direction of the handle, and the fusiform guide wire ring is formed by bending a guide wire. The utility model has scientific and reasonable design, is suitable for the operation requiring lacrimal duct placement such as lacrimal duct obstruction, lacrimal duct stenosis, lacrimal duct rupture, lacrimal punctum membrane closure and the like, and is characterized in that the lower end of the lacrimal duct drainage tube is fished out from the nasal cavity in the process of implanting the lacrimal duct drainage tube, the snare is designed according to the position of the nasolacrimal duct at the opening of the lower nasal duct and the specific operation process explored in clinical practice, and is suitable for the lower end of the lacrimal duct drainage tube fished out from the nasal cavity under the invisible condition, thereby avoiding the damage to the nasal mucosa, reducing the possibility of bleeding of the nasal mucosa, having simple operation and easy grasp, not requiring the support of a nasolacrimal system, having low manufacturing cost and remarkably improving the operation safety in clinical use.

Description

Snare for scooping lower end of lacrimal drainage tube from nasal cavity in lacrimal passage catheterization operation

Technical Field

The utility model belongs to the technical field of medical appliances, and relates to a surgical appliance for scooping a lacrimal passage drainage tube, in particular to a snare for scooping the lower end of the lacrimal passage drainage tube from a nasal cavity in a lacrimal passage catheterization operation.

Background

Lacrimal passage diseases are frequently encountered diseases of ophthalmology, including lacrimal passage obstruction, lacrimal passage stenosis, lacrimal duct rupture, punctum membrane closure, etc. Clinically, the lacrimal flow is taken as a main symptom, the vision quality of partial patients is reduced and purulent secretion of eyes is accompanied, the appearance is influenced by the lower eyelid eversion caused by the impregnation of the face by the lacrimal flow and improper lacrimation, and physical and psychological discomfort is caused to the patients. These conditions often require post-operative lacrimal placement of the lacrimal drainage tube.

In the traditional lacrimal duct catheterization operation, probes at two ends of a lacrimal drainage tube are inserted into upper and lower lacrimal punctum and then are inserted into the nasolacrimal duct to be positioned at the opening of the lower nasolacrimal duct, and the probes are taken out of the nasal cavity by a stainless steel traction hook. Because the lower end of the lacrimal drainage tube is positioned at the opening of the lower nasal passage of the nasolacrimal duct, the opening of the nasolacrimal duct is not visible under direct view in operation, so that an eye doctor often uses a stainless steel traction hook to hook the lower end of the lacrimal drainage tube from the nasal cavity and guide the lower end out of the nasal cavity under invisible conditions according to experience and hand feeling, and the following defects and disadvantages exist in the operation process:

1. the operation can sometimes get up to the nasal mucosa and damage the nasal mucosa to cause nasal bleeding, especially for doctors with less operation experience, the operation learning time of the step is long, the operation time is long, and the operation process has great potential safety hazard;

2. patients often have obvious pain in the hooking process, and potential safety hazards of nasal mucosa massive hemorrhage exist;

3. if one wants to operate this procedure under direct vision, one needs the support of a nasal endoscope system, which is expensive and costly, which is difficult to popularize due to the lack of related medical equipment for primary hospitals, and which increases the medical costs of the patient and limits its use.

Therefore, there is a need to design a nasal cavity end extraction device of a lacrimal drainage tube with high safety, basically no wound, simple operation, short operation time, no serious complications, less pain in the operation of a patient, no need of expensive equipment, low manufacturing cost, good effect and short learning period.

The same published patent document as the present patent application is not found by searching the published patent document.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the snare for taking the lower end of the lacrimal drainage tube from the nasal cavity in the lacrimal passage catheterization operation, so that the safety of the operation process of taking the lower end of the lacrimal drainage tube from the nasal cavity is high, the operation is basically noninvasive, the operation is simple, the operation time is short, serious complications are avoided, the pain in the operation of a patient is small, and the learning period of an operator is short and easy to grasp. At the same time the snare does not require expensive equipment to use and is inexpensive to manufacture.

The utility model solves the technical problems by the following technical proposal:

a snare for scooping the lower end of a lacrimal drainage tube from a nasal cavity in a lacrimal passage catheterization operation, which is characterized in that: the device comprises a handle and a fusiform guide wire ring fixedly connected with the front end of the handle, wherein the long diameter of the fusiform guide wire ring is consistent with the direction of the handle, and the fusiform guide wire ring is formed by bending a guide wire.

And the flexible transparent sleeve is wrapped outside the shuttle-shaped guide wire ring, and the front end of the flexible transparent sleeve is arc-shaped.

Moreover, scale marks are arranged on the flexible transparent sleeve.

Moreover, scale reinforcing lines are arranged on the flexible transparent sleeve, and are 5cm away from the top of the fusiform guide wire ring.

Moreover, the surface of the handle is provided with anti-skid patterns.

And the rear end of the handle is provided with a circular fixing end.

In addition, the long diameter of the fusiform guide wire ring is 7cm, and the transverse diameter of the fusiform guide wire ring can be adjusted according to the nasal condition of a patient.

Furthermore, the diameter of the guide wire was 0.35mm.

Furthermore, the outer diameter of the flexible transparent sleeve is 1mm.

The utility model has the advantages and beneficial effects that:

1. the snare is designed and constructed, and the flexible transparent sleeve tube is used for avoiding damage to nasal mucosa, reducing the possibility of bleeding of the nasal mucosa and ensuring that the snare can be smoothly inserted into the nasal cavity by virtue of the fusiform design of the snare, and has obvious clinical use effect.

2. The snare at the lower end of the lacrimal passage drainage tube is fished out from the nasal cavity in the lacrimal passage catheterization operation, so that the operation time is shortened, and the operation safety is improved.

3. The snare for scooping the lower end of the lacrimal drainage tube from the nasal cavity in the lacrimal passage catheterization operation is provided with the scale marks on the flexible transparent sleeve, so that the depth of the penetrating nasal cavity is visualized, a clinician can infer whether the depth of the snare penetrating the nasal cavity reaches the position of the nasolacrimal duct at the opening of the lower nasolacrimal duct or not, and the visualization and quantification of the penetrating depth are more conducive to accurately scooping the lacrimal drainage tube from the opening of the lower nasolacrimal duct.

4. The snare at the lower end of the lacrimal passage drainage tube is fished out from the nasal cavity in the lacrimal passage catheterization operation, the long diameter of the fusiform guide wire ring is 7cm, the transverse diameter can be adjusted according to the nasal conditions of different patients, the operation is easier clinically, the learning time of young doctors is reduced, the damage of nasal mucosa is reduced, and the uncomfortable feeling of the patients in the operation process is reduced.

5. The snare at the lower end of the lacrimal passage drainage tube is fished out from the nasal cavity in the lacrimal passage catheterization operation, so that the discomfort of a patient in the nasal cavity to sleeve the lower end of the lacrimal passage drainage tube is reduced, and the pain of the patient is reduced.

6. The snare at the lower end of the lacrimal passage drainage tube is fished out from the nasal cavity in the lacrimal passage catheterization operation, the lower end of the lacrimal passage drainage tube can be safely taken out without the assistance of a nasal endoscope, the operation cost is reduced, the economic burden of a patient is reduced, the clinical cost is greatly reduced, and the lacrimal passage catheterization device is convenient for clinical application and popularization.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is an enlarged view of a portion a in fig. 1.

Description of the reference numerals

1-scale lines, 2-flexible transparent sleeves, 3-scale reinforcing lines, 4-fusiform guide wire rings, 5-handles, 6-round fixed ends, 7-guide wires and 8-anti-skid patterns.

Detailed Description

The utility model is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.

A snare for scooping the lower end of a lacrimal drainage tube from a nasal cavity in a lacrimal passage catheterization operation is innovatively characterized in that: the novel guide wire comprises a handle 5 and a fusiform guide wire ring 4 fixedly connected with the front end of the handle 5, the long diameter of the fusiform guide wire ring 4 is consistent with the direction of the handle 5, the fusiform guide wire ring 4 is formed by bending a guide wire 7, and the diameter of the guide wire 7 is 0.35mm.

The disposable lacrimal drainage tube (YLG-1A type) is fished out of the nasal cavity, the damage to nasal mucosa is avoided due to the design structure of the snare and the flexible transparent sleeve, the possibility of bleeding of the nasal mucosa is reduced, and the needle-shaped design of the snare enables the needle-shaped snare to be more smoothly inserted into the nasal cavity, so that the clinical use effect is obvious.

The outside of fusiform seal wire ring 4 is wrapped up in and is had flexible transparent sleeve 2, there is flexible transparent sleeve's front end to be convex, and flexible transparent sleeve 2's external diameter is 1mm, avoids the contact of metal seal wire and human nasal mucosa, guarantees the operational safety.

The scale marks 1 are arranged on the flexible transparent sleeve 2, so that the probing depth can be conveniently observed at any time in the use process, and the visibility and quantification of the probing depth are more conducive to accurately scooping the lacrimal drainage tube from the lower nasal meatus opening of the nasolacrimal duct.

The flexible transparent sleeve 2 is provided with a scale reinforcing line 3 at a position which is 5cm away from the top of the fusiform guide wire ring 4, so that a prompting effect is conveniently achieved for an operator, and the operator is facilitated to judge whether the depth of the snare penetrating into the nasal cavity reaches the position of the nasolacrimal duct at the opening of the lower nasal passage.

The surface of the handle 6 is provided with anti-slip lines 8, so that the contact friction is increased when the operator holds the hand, the hand-held stability is improved, and the operation safety is ensured.

The rear end of the handle is provided with a circular fixed end 6, so that the connection is stable, and the hand-held operation of a user on the handle is facilitated.

The long diameter of the fusiform guide wire ring 4 is 7cm, the transverse diameter can be adjusted according to the nasal condition of a patient, the flexible transparent sleeve at the front end of the fusiform guide wire ring is arc-shaped, the uncomfortable feeling of the patient in the operation process is reduced, and the operation is easier in clinic.

The working principle of the utility model is as follows:

the patient lies down, the lacrimal drainage tube snare is vertically dropped into the lower nasal canal from nostril, the depth varies from person to person, the metal probe at one end of the lacrimal drainage tube (YLG-1A type) is inserted into the lacrimal canal from the lower lacrimal punctum, after reaching lacrimal sac, the metal probe is turned over for 90 degrees to make it vertical to lacrimal canal, the probe in the lacrimal drainage tube is pulled out from the opening of nasolacrimal canal down to the lower nasal canal, the lacrimal drainage tube is further delivered into nasal cavity for about 5cm to 10 cm, the lacrimal drainage tube snare is taken out from nasal cavity, the lower section of the lacrimal drainage tube is taken out from the snare loop of snare, the lower end of the lacrimal drainage tube is pulled until it reaches out of nasal cavity, the hard tube of the lacrimal drainage tube is cut off, and the two ends of the silica gel tube are knotted to keep in nasal cavity.

The development of the loop device has been practiced in a large amount, the time for taking the lacrimal drainage tube in the use process is short, the operation time is shortened, the risk of injury to nasal mucosa in the taking process is reduced, the safety of the operation is improved, the discomfort of pain and the like of a patient in the operation is reduced, the clinical use effect is obvious, the loop device is not required to be matched with a nasal endoscope for use, the loop device is safe, the application cost is greatly reduced, the economic burden of the patient is reduced, and the loop device is convenient for clinical popularization.

Although the embodiments of the present utility model and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the embodiments and the disclosure of the drawings.

Claims (8)

1. A snare for scooping the lower end of a lacrimal drainage tube from a nasal cavity in a lacrimal passage catheterization operation, which is characterized in that: the device comprises a handle (5) and a fusiform guide wire ring (4) fixedly connected with the front end of the handle (5), wherein the long diameter of the fusiform guide wire ring (4) is consistent with the direction of the handle (5), and the fusiform guide wire ring (4) is formed by bending a guide wire (7);

the outside of fusiform seal wire ring (4) is wrapped with flexible transparent sleeve (2), there is the front end of flexible transparent sleeve (2) to be convex.

2. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: and scale marks (1) are arranged on the flexible transparent sleeve (2).

3. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: scale reinforcing lines (3) are arranged on the flexible transparent sleeve (2) at a position 5cm away from the top of the fusiform guide wire ring (4).

4. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: the surface of the handle (5) is provided with anti-skid patterns (8).

5. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: the rear end of the handle is provided with a circular fixed end (6).

6. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: the long diameter of the fusiform guide wire ring (4) is 7cm, and the transverse diameter can be adjusted according to the nasal condition of a patient.

7. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: the diameter of the guide wire (7) is 0.35mm.

8. A snare for picking up the lower end of a lacrimal drainage tube from the nasal cavity during a lacrimal passage catheterization procedure as defined in claim 1, wherein: the outer diameter of the flexible transparent sleeve (2) is 1mm.