CN111714280A - Lacrimal Drainage Tube Push Out Device - Google Patents

Abstract

The invention provides a lacrimal drainage tube pushing device, comprising: a pushing column, including a support section and a diameter-changing section, the diameter-changing section includes at least three fan-shaped parts, and a gap is left between each fan-shaped part; There are at least three through holes, each through hole penetrates the support section and a corresponding sector along the axial direction of the push column, and each sector section is provided with a hanging lug corresponding to the through hole; the knob is arranged on the support section away from the variable diameter One end of the segment, and the knob is rotatably connected to the support segment; the elastic pull wire, each through hole is provided with an elastic pull wire, one end of the elastic pull wire is connected with a hanging ear, and the other end is connected with the knob, and the elastic pull wire drives the fan-shaped part under the rotation of the knob away or near. The lacrimal drainage tube pushing device provided by the invention is convenient for pushing the lacrimal drainage tube out of the lacrimal duct, and is simple and convenient to use.

Description

Lacrimal Drainage Tube Push Out Device

technical field

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

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, the tears cannot be exported through the lacrimal duct, and epiphora will occur, which will affect the patient's health and quality of life in the long run.

Stenosis or obstruction of the lacrimal duct can be treated by implanting a lacrimal drainage tube indwelling. However, after clinical lacrimal drainage tube implantation surgery, if the patient has pathological changes or improvement of the condition, or the implantation position of the drainage tube is shifted, it may lead to the need to remove the drainage tube.

However, because the human lacrimal duct 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 remove the lacrimal drainage tube.

SUMMARY OF THE INVENTION

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

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

The push column includes a support section and a variable diameter section, the variable diameter section includes at least three fan-shaped sections, and a gap is left between each of the fan-shaped sections. The push column is provided with at least three through holes, each of which is The through hole passes through the support section and the corresponding one of the fan-shaped parts along the axial direction of the push column, and each of the fan-shaped parts is provided with a hanging lug corresponding to the through hole;

a knob, which is arranged on one end of the support section away from the diameter-reducing section, and the knob is rotatably connected relative to the support section;

Elastic pull wire, one elastic pull wire is set in each of the through holes, one end of the elastic pull wire is connected with one of the hanging ears, and the other end is connected with the knob, and the elastic pull wire is rotated under the rotation of the knob. The sector is driven to separate or approach.

Optionally, the end surface of the fan-shaped portion is concave in a direction close to the knob.

Optionally, the diameter reducing section includes four of the sector parts.

Optionally, the support section and the diameter reducing section are integrally formed.

Optionally, scale lines are provided on the support section.

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

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

The above-mentioned lacrimal drainage tube push-out device is designed to have a variable diameter at one end, and the elastic pulling wire is pulled by the rotation of the knob, and the elastic pulling wire drives the sector 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 it is convenient to slowly push the drainage tube out of the nasolacrimal duct.

Description of drawings

1 is a schematic structural diagram of a lacrimal drainage tube pushing device in a first embodiment of the present invention;

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

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

Description of main component symbols:

Lacrimal Drainage Tube Push Out Device 10 push column 11 knob 12 elastic cable 13 support section 111 reducing section 112 sector 1121 through hole 14 hanging ears 1122 tick marks 1111

The following specific embodiments will further illustrate the present invention with reference to the above drawings.

Detailed ways

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

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. 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 illustrative purposes 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 art to which this invention belongs. 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.

Please refer to FIG. 1 to FIG. 2 , the lacrimal drainage tube pushing device 10 provided by the first embodiment of the present invention includes a pushing column 11 , a knob 12 and an elastic pulling wire 13 .

The push column 11 includes two parts, which are a support section 111 and a diameter reducing section 112 respectively. In order to adapt to the bending of the lacrimal duct, the pushing column 11 has a certain hardness and can be bent and deformed, and can be prepared by using a polymer material, such as silicon rubber or polyurethane.

Wherein, the outer diameter of the pushing column 11 in this embodiment ranges from 0.5 mm to 3 mm. Preferably, the outer diameter of the push column 11 in this embodiment is 1.0 mm, which is used in conjunction with the outer diameter of a commonly used lacrimal drainage tube. In other embodiments, push posts 11 with other outer diameters may be selected.

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

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

Further, the diameter reducing section 112 includes at least three fan-shaped portions 1121, and each fan-shaped portion 1121 is provided with a gap, so that the fan-shaped portion 1121 can have a deformation space when it deforms under the traction of an external force.

Preferably, in this embodiment, the diameter reducing section 112 includes four fan-shaped portions 1121 . The fan-shaped parts 1121 are equally divided into fan-shaped parts, and the gaps between each fan-shaped part 1121 are equal, which is convenient for production and processing. In other embodiments, sectors 1121 of unequal size may be selected. In other embodiments, the number of sectors 1121 may be three or greater than or equal to five.

In addition, the edge of each sector is rounded to make the sector 1121 more rounded.

Corresponding to the number of sectors 1121 , at least three through holes 14 are provided in the push column 11 , and each through hole 14 penetrates the support section 111 and a corresponding sector 1121 along the axial direction of the push column 11 . It can be understood that the number of the through holes 14 in this embodiment is consistent with the number of the sector portions 1121 in this embodiment, that is, four through holes 14 are provided. In other embodiments, three or more through holes 14 may be selected.

Wherein, each fan-shaped portion 1121 is provided with a mounting lug 1122 corresponding to the through hole 14 . The hanging lugs 1122 are used to connect with the elastic pulling wires 13 . In this embodiment, the hanging lugs are arc-shaped and formed on the end surface of the fan-shaped portion 1121 .

The knob 12 is disposed at one end of the support section 111 away from the diameter reducing section 112 , and the knob 12 is rotatably connected relative 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, each through hole 14 is provided with an elastic pulling wire 13 , one end of the elastic pulling wire 13 is connected with a hanging lug 1122 , and the other end is connected with the knob 12 . When the device 10 is not in use, the elastic pulling wire 13 is in a stretched state, so that the outer diameters of the support section 111 and the diameter reducing section 112 are kept the same. The elastic pulling 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 pulling 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 1/4 of the support section 111 /4.

Meanwhile, 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 mode of the above-mentioned lacrimal drainage tube push-out device 10 is: slowly implant the front end of the variable diameter section 112 into the lacrimal canaliculi, then turn to the nasolacrimal duct to reach the position of the drainage tube, and judge the swelling state of the drainage tube according to the clinical state information at this time. The inner and outer diameters are determined by turning the knob 12 by hand, so that the knob drives the elastic pull wire 13, and the elastic pull wire 13 drives the sector 1121 to bend and deform to adjust to a suitable mouth opening diameter, and then the lacrimal drainage tube push-out device 10 pushes the drainage tube out of the nasolacrimal duct. Roll out slowly.

The above-mentioned lacrimal drainage tube push-out device 10 is designed to have a variable diameter at one end, and the elastic pulling wire 13 is pulled by the rotation of the knob 12. The opening diameter of the 112 can be changed to match the inner and outer diameters of the drainage tube in the lacrimal duct in the 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 pushing device 10 in a second embodiment of the present invention. The lacrimal drainage tube pushing device 10 in this embodiment is roughly the same as the lacrimal drainage tube pushing device 10 in the first embodiment. ,The difference is:

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

The above-mentioned lacrimal drainage tube push-out device 10 is designed such that the end face of the sector 1121 is concave in the direction close to the knob 12, so that the sector 1121 can maintain the drainage tube as much as possible after the diameter-reducing section 112 is adjusted. The larger contact area makes it easier to push the drainage tube out of the nasolacrimal duct.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (7)

1. A lacrimal drainage tube push-out device is characterized by comprising:

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

the knob is arranged at one end, far away from the reducing section, of the supporting section and is in rotary connection with the supporting section;

the elastic stay wire is arranged in each through hole, 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.

2. The lacrimal drainage tube push out device of claim 1, wherein an end surface of the sector is concave in a direction approaching the knob.

3. The lacrimal drainage tube ejection device of claims 1 or 2, wherein the reducer section includes four of the scallops.

4. The lacrimal drainage tube ejection device of claim 1, wherein the support section and the reducer section are integrally formed.

5. The lacrimal drainage tube push out device of claims 1 or 4, wherein a scale line is provided on the support section.

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 of claim 1, wherein a length of the reducer section is 1/4-1/3 of the support section.

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