CN111714280B - lacrimal drainage tube ejection device - Google Patents

Abstract

The invention provides a lacrimal drainage tube pushing-out device, comprising: the pushing column comprises a supporting section and a reducing section, wherein the reducing section comprises at least three fan-shaped parts, gaps are reserved among the fan-shaped parts, at least three through holes are formed in the pushing column, each through hole penetrates through the supporting section and corresponds to one fan-shaped part along the axial direction of the pushing column, and a hanging lug is arranged at each fan-shaped part corresponding to the through hole; the knob is arranged at one end of the support section, which is far away from the reducing section, and is rotationally connected with the support section; and one end of the elastic stay wire is connected with one hanging lug, the other end of the elastic stay wire is connected with the knob, and the elastic stay wire drives the fan-shaped part to separate or approach under the rotation of the knob. The lacrimal drainage tube pushing-out device provided by the invention is convenient for pushing out the lacrimal drainage tube from the lacrimal passage, and is simple and convenient to use.

Description

lacrimal drainage tube ejection device

technical field

The invention relates to the technical field of medical devices, in particular to a lacrimal duct drainage tube pushing device.

Background technique

Human tears come from the lacrimal gland, which is the organ that secretes tears. Usually, after tears are produced, they are discharged through the lacrimal duct. If the nasolacrimal duct is abnormal, such as stenosis or occlusion, and the tears cannot be exported through the lacrimal duct, epiphora will occur, which will affect the patient's health and quality of life in the long run.

Existing lacrimal duct stenosis or obstruction can be treated by implanting a lacrimal duct drainage tube indwelling. However, after the clinical lacrimal drainage tube implantation operation, if the patient has pathological changes or the condition improves, or the implantation position of the drainage tube deviates, the drainage tube may need to be taken out.

However, since the lacrimal duct of the human body is a very small and narrow space, it is very difficult to remove the drainage tube. At the same time, there is no corresponding device on the market to take out the lacrimal drainage tube.

Contents of the invention

The object of the present invention is to provide a device for pushing out the lacrimal duct drainage tube to solve the technical problem that there is no corresponding device on the market to facilitate the removal of the lacrimal duct drainage tube.

In order to achieve the above object, the present invention provides a lacrimal drainage tube pushing device, comprising:

The push column includes a support section and a diameter-reducing section. The diameter-reducing section includes at least three sector parts, and there are gaps between each sector part. At least three through holes are arranged in the push column, and each The through hole passes through the support section and corresponds to one sector along the axial direction of the push column, and each sector is correspondingly provided with a hanging ear at the through hole;

The knob is arranged on the end of the supporting section away from the diameter-reducing section, and the knob is rotatably connected with respect to the supporting section;

An elastic pull wire, one elastic pull wire is arranged in each of the through holes, one end of the elastic pull wire is connected to one of the hanging lugs, and the other end is connected to the knob, and the elastic pull wire is rotated under the rotation of the knob Drive the fan-shaped parts to separate or approach.

Optionally, the end surface of the fan-shaped portion is concaved toward the direction close to the knob.

Optionally, the diameter reducing section includes four sector portions.

Optionally, the supporting section and the reducing section are integrally formed.

Optionally, scale lines are provided on the support section.

Optionally, the outer diameter of the pushing column is between 0.5-3 mm.

Optionally, the length of the reducing section is 1/4-1/3 of the supporting section.

The above-mentioned lacrimal duct drainage tube pushing device is designed so that one end is variable in diameter, and the elastic pull wire is pulled by the rotation of the knob, and the elastic pull wire drives the fan-shaped part of the variable diameter section to deform, so that the opening diameter of the variable diameter section can be changed. Therefore, the inner and outer diameters of the drainage tube in the lacrimal duct are adapted to the swollen state, and the drainage tube can be slowly pushed out from the nasolacrimal duct.

Description of drawings

Fig. 1 is a structural schematic diagram of the lacrimal duct drainage tube push-out device in the first embodiment of the present invention;

Fig. 2 is the enlarged view of I place in Fig. 1;

Fig. 3 is a schematic structural view of the variable diameter section in the lacrimal duct drainage tube pushing device according to the second embodiment of the present invention.

Description of main component symbols:

lacrimal drainage tube ejection device 10 push column 11 knob 12 elastic pull cord 13 support section 111 Reducer 112 Sector 1121 through hole 14 Hanging ears 1122 Tick mark 1111

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 to FIG. 2 , the lacrimal drainage tube pushing device 10 according to the first embodiment of the present invention includes a pushing column 11 , a knob 12 and an elastic pull wire 13 .

The pushing column 11 includes two parts, namely a supporting section 111 and a reducing section 112 . In order to adapt to the curvature of the lacrimal duct, the pushing column 11 has a certain hardness and can be bent and deformed. It can be made of polymer materials, such as silicone rubber or polyurethane.

Wherein, the outer diameter range of the pushing column 11 in this embodiment is between 0.5mm-3mm. Preferably, the outer diameter of the pushing column 11 in this embodiment is 1.0 mm, which is used in conjunction with the outer diameter of commonly used lacrimal duct drainage tubes. In other embodiments, the pushing column 11 with other outer diameters can be selected.

Further, in this embodiment, the above-mentioned supporting section 111 is a solid column, which makes the manufacturing process simple. In other embodiments, the support section 111 may also adopt a hollow column to reduce the hardness of the entire support section 111 and facilitate operation during use.

In addition, in order to simplify the preparation process, the supporting section 111 and the reducing section 112 in this embodiment are prepared by integral molding. In other embodiments, the supporting section 111 and the reducing section 112 may be prepared separately, and then the reducing section 112 may be adhered to one end of the supporting section 111 by means of adhesion.

Further, the reducing section 112 includes at least three sector parts 1121 , and there is a gap between each sector part 1121 , so that there is room for deformation of the sector parts 1121 when they are deformed under the pull of an external force.

Preferably, in this embodiment, the diameter reducing section 112 includes four fan-shaped portions 1121 . Moreover, the fan-shaped parts 1121 are evenly divided into fan-shaped parts, and the gaps between each fan-shaped part 1121 are equal, which is convenient for production and processing. At the same time, the deformation range of the four fan-shaped parts 1121 is easier to control when deformed under the action of external force. In other embodiments, sector portions 1121 with unequal sizes may be selected. In other embodiments, the number of sectors 1121 may be selected to be three or greater than or equal to five.

In addition, the edges of each fan-shaped portion are rounded to make the fan-shaped portion 1121 more rounded.

Corresponding to the number of sector portions 1121 , at least three through holes 14 are provided in the push column 11 , and each through hole 14 penetrates through the supporting section 111 and corresponds to a sector portion 1121 along the axial direction of the push column 11 . It can be understood that the number of through holes 14 in this embodiment is consistent with the number of fan-shaped portions 1121 in this embodiment, that is, there are four through holes 14 . In other embodiments, the number of through holes 14 may be selected to be three or greater than or equal to five.

Wherein, each sector portion 1121 is correspondingly provided with a hanging ear 1122 at the through hole 14 . The hanging ear 1122 is used for connecting with the elastic pull wire 13 . In this embodiment, the hanging lug is arc-shaped and formed on the end surface of the fan-shaped portion 1121 .

The knob 12 is disposed on the end of the support section 111 away from the reducing section 112 , and the knob 12 is rotatably connected to the support section 111 . Further, in order to facilitate the use of the knob 12 , protrusions are provided on the surface of the knob 12 to increase the frictional force of the knob 12 in use.

Further, an elastic pull wire 13 is provided in each through hole 14 , one end of the elastic pull wire 13 is connected to a hanging ear 1122 , and the other end is connected to the knob 12 . When the device 10 is not in use, the elastic pull wire 13 is in a stretched state, so that the outer diameters of the supporting section 111 and the reducing section 112 are kept consistent. The elastic pull wire 13 can be elastically stretched or retracted under the rotation of the knob 12 , thereby driving the sector 1121 to separate or approach. Wherein, the material of the elastic pull wire 13 can be made of nylon wire or other polymer materials.

In addition, in order to facilitate the operation during use, the length of the variable diameter section 112 can be designed to be 1/4-1/3 of the support section 111. Preferably, in this embodiment, the length of the variable diameter section 112 is 1/3 of the support section 111. /4.

At the same time, in order to facilitate clinical confirmation of the implantation depth, a scale line 1111 is also provided on the support section 111 .

The specific usage of the above-mentioned lacrimal duct drainage tube pushing device 10 is as follows: Slowly implant the front end of the variable diameter section 112 into the lacrimal canaliculus, then turn to the nasolacrimal duct and go deep to the position of the drainage tube. At this time, judge the swelling state of the drainage tube according to the clinical status information Use the hand to turn the knob 12, so that the knob drives the elastic pull wire 13, and the elastic pull wire 13 drives the fan-shaped part 1121 to bend and deform to adjust to a suitable opening diameter. Roll out slowly.

The aforementioned lacrimal duct drainage tube pushing device 10 is designed in such a way that one end is variable in diameter, and the elastic pull wire 13 is pulled by the rotation of the knob 12, and the elastic pull wire 13 drives the fan-shaped part 1121 of the diameter-reducing section 112 to deform, so that the diameter-reducing section The opening diameter of 112 can be changed so as to adapt to the inner and outer diameters of the drainage tube in the lacrimal duct in a swollen state, so that the drainage tube can be slowly pushed out from the nasolacrimal duct.

Please refer to FIG. 3 , which is a lacrimal drainage tube ejection device 10 in the second embodiment of the present invention. The lacrimal drainage tube ejection device 10 in this embodiment is roughly the same as the lacrimal drainage tube ejection device 10 in the first embodiment. ,The difference is:

The end surface of the fan-shaped portion 1121 is concave toward the direction close to the knob 12 . In this embodiment, the end surface of the fan-shaped portion 1121 is concaved toward the direction of the knob 12 to form an arc-shaped spherical surface concave toward the direction of the knob 12 . In other embodiments, the end surface of the fan-shaped portion 1121 can be designed to be concave toward the direction close to the knob 12 to form a tapered surface pointing towards the direction of the knob 12 . By designing the end surface of the fan-shaped part 1121 to be concave in the direction close to the knob 12, so that after the diameter-reducing section 112 is adjusted, the fan-shaped part 1121 can maintain as much contact area as possible with the drainage tube, which is more convenient for the drainage tube Push out from the nasolacrimal duct.

The above lacrimal duct drainage tube pushing device 10 is designed so that the end surface of the fan-shaped part 1121 is concaved in the direction close to the knob 12, so that after the diameter-reducing section 112 is adjusted, the fan-shaped part 1121 can maintain and drain the tube as much as possible. Large contact area makes it easier to push the drainage tube out of the nasolacrimal duct.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. A lacrimal drainage tube push-out device, comprising:

the pushing column comprises a supporting section and a reducing section, wherein the reducing section comprises at least three fan-shaped parts, gaps are reserved among the fan-shaped parts, at least three through holes are formed in the pushing column, each through hole penetrates through the supporting section and one corresponding fan-shaped part along the axial direction of the pushing column, and a hanging lug is arranged at each fan-shaped part corresponding to the through hole;

the knob is arranged at one end, far away from the reducing section, of the supporting section and is rotationally connected with the supporting section;

elastic stay wires are arranged in each through hole, one end of each elastic stay wire is connected with one hanging lug, the other end of each elastic stay wire is connected with the knob, and the elastic stay wires drive the fan-shaped parts to separate or approach under the rotation of the knob.

2. The lacrimal drainage tube push-out device according to claim 1, wherein an end surface of the fan-shaped portion is concave toward a direction approaching the knob.

3. The lacrimal drainage tube push-out device according to claim 1 or 2, wherein the reducing section includes four of the sectors.

4. The lacrimal drainage tube push-out device of claim 1, wherein the support section and the reducing section are integrally formed.

5. The lacrimal drainage tube push-out device according to claim 1 or 4, wherein the support section is provided with graduation marks.

6. The lacrimal drainage tube push-out device of claim 1, wherein an outer diameter of the push post ranges between 0.5-3 mm.

7. The lacrimal drainage tube push-out device according to claim 1, wherein the length of the reducing section is 1/4-1/3 of the length of the support section.

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