CN111714280A

CN111714280A - Pushing device for lacrimal passage drainage tube

Info

Publication number: CN111714280A
Application number: CN202010470079.XA
Authority: CN
Inventors: 陈松林; 杨习锋; 曾晨光; 丁雪玲
Original assignee: Guangzhou Sun Shing Biotech Co ltd
Current assignee: Guangzhou Sun Shing Biotech Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-09-29
Anticipated expiration: 2040-05-28
Also published as: CN111714280B

Abstract

The invention provides a lacrimal passage drainage tube push-out device, which comprises: 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 of the support section, which is far away from the diameter-changing section, and is rotatably connected with the support 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. The lacrimal passage drainage tube push-out device provided by the invention is convenient for pushing the lacrimal passage drainage tube out of the lacrimal passage, and is simple and convenient to use.

Description

Pushing device for lacrimal passage drainage tube

Technical Field

The invention relates to the technical field of medical instruments, in particular to a lacrimal passage drainage tube push-out device.

Background

Human tears are from the lacrimal gland, which is the organ that secretes tears. Usually, tears are discharged through the lacrimal passage after the tears are produced, and if the nasolacrimal duct is abnormal, such as stenosis or occlusion, tears are spilled when tears cannot be led out through the lacrimal passage, which may affect the health and life quality of patients for a long time.

Lacrimal stenosis or obstruction can now be treated by implanting a lacrimal drainage tube indwelling method. However, after the lacrimal drainage tube is implanted in clinic, if the patient has pathological changes or disease conditions, or the implantation position of the drainage tube is shifted, the drainage tube may need to be taken out.

However, the lacrimal passage of the human body is a very tiny and long space, so that the drainage tube is difficult to take out. Meanwhile, no corresponding device is available on the market for taking out the lacrimal passage drainage tube.

Disclosure of Invention

The invention aims to provide a lacrimal passage drainage tube pushing device, which solves the technical problem that no corresponding device is available in the market, so that the lacrimal passage drainage tube can be conveniently taken out.

To achieve the above object, the present invention provides a lacrimal passage drainage tube push-out device, 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.

Optionally, the end surface of the sector is concave towards the direction close to the knob.

Optionally, the reducer section comprises four of said sectors.

Optionally, the support section and the reducer section are integrally formed.

Optionally, the support section is provided with scale marks.

Optionally, the push column has an outer diameter in the range of 0.5-3 mm.

Optionally, the length of the reducer section is 1/4-1/3 of the support section.

The lacrimal passage drainage tube push-out device is designed in a mode that one end of the lacrimal passage drainage tube is variable in diameter, the elastic pull wire is pulled through the rotation of the knob, and then 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, the opening diameter of the variable-diameter section is matched with the inner diameter and the outer diameter of the drainage tube in the lacrimal passage in a swelling state, and the drainage tube can be pushed out slowly from the nasolacrimal duct.

Drawings

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

FIG. 2 is an enlarged view taken at I in FIG. 1;

fig. 3 is a schematic structural view of a reducer section in a lacrimal drainage tube push-out device according to a second embodiment of the present invention.

Description of the main element symbols:

pushing device for lacrimal passage drainage tube	10	Propelling movement post	11
				Rotary knob	12	Elastic stay wire	13
Support section	111	Reducing section	112
				Sector part	1121	Through hole	14
Hanging loop	1122	Graduation mark	1111

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured 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 the like as used herein are for illustrative purposes only.

Unless defined otherwise, 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 terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the 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 2, a lacrimal drainage tube pushing device 10 according to a first embodiment of the present invention includes a pushing column 11, a knob 12 and an elastic pulling wire 13.

The pushing column 11 comprises two parts, a support section 111 and a reducer section 112. In order to adapt to the bending of the lacrimal passage, the pushing column 11 has certain hardness and can be bent and deformed, and the pushing column can be prepared by adopting high polymer materials, such as silicon rubber or polyurethane.

Wherein, the outer diameter range of the pushing column 11 in the present embodiment is between 0.5mm and 3 mm. Preferably, the outer diameter of the pushing column 11 in this embodiment is 1.0mm, which is used in cooperation with the outer diameter of a commonly used lacrimal drainage tube. In other embodiments, other outer diameter sizes of the push post 11 may be selected.

Further, the support section 111 in this embodiment is a solid column, so that the manufacturing process is simple. In other embodiments, the supporting section 111 may be hollow columns to reduce the stiffness of the entire supporting section 111 for easy handling during use.

In addition, the support section 111 and the reducer section 112 in this embodiment are integrally formed for simple manufacturing process. In other embodiments, the support section 111 may be prepared separately from the reducer section 112, and the reducer section 112 may be adhered to one end of the support section 111 by adhesion.

Further, the diameter-changing section 112 includes at least three sectors 1121, and a gap is reserved between each sector 1121, so that the sectors 1121 can have a deformation space when being deformed under the traction of an external force.

Preferably, in the present embodiment, the variable diameter section 112 includes four sectors 1121. The sectors 1121 are equally divided into sectors, and the gaps between the sectors 1121 are equal, so that the production and the processing are convenient, and meanwhile, the deformation range of the four sectors 1121 is easier to control when the four sectors 1121 are deformed under the action of external force. In other embodiments, sectors 1121 of unequal size may be selected. In other embodiments, three or more than five sectors 1121 may be selected.

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

Corresponding to the number of the fan-shaped portions 1121, at least three through holes 14 are formed in the pushing column 11, and each through hole 14 penetrates through the supporting section 111 and a corresponding one of the fan-shaped portions 1121 in the axial direction of the pushing column 11. It is understood that the number of the through holes 14 in the present embodiment is the same as the number of the sectors 1121 in the present embodiment, that is, 4 through holes 14 are provided. In other embodiments, a number of three or greater than or equal to five through-holes 14 may be selected.

Each of the fan-shaped portions 1121 is provided with a hanging lug 1122 at a position corresponding to the through hole 14. The hanging lug 1122 is used for connecting with the elastic pulling wire 13. In the present 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 an end of the support section 111 away from the reducing section 112, and the knob 12 is rotatably connected with respect to the support section 111. Further, to facilitate use of the knob 12, protrusions are provided on the surface of the knob 12 to increase the frictional force of use of the knob 12.

Furthermore, an elastic pulling wire 13 is arranged in each through hole 14, 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 supporting section 111 and the reducing section 112 are kept consistent. The elastic pulling wire 13 can be elastically stretched or retracted by the rotation of the knob 12, so as to drive the fan-shaped portion 1121 to separate or approach. Wherein, the material of the elastic stay 13 can be made of nylon wire or other high molecular materials.

In addition, the length of the variable diameter section 112 can be designed to be 1/4-1/3 of the support section 111 for the convenience of operation in use, and preferably, the length of the variable diameter section 112 is 1/4 of the support section 111 in the embodiment.

Meanwhile, in order to facilitate the clinical confirmation of the implantation depth, a graduation 1111 is further provided on the support section 111.

The lacrimal passage drainage tube push-out device 10 has the specific use mode as follows: the front end of the diameter-variable section 112 is slowly implanted into a lacrimal canaliculus, then turns towards the nasolacrimal duct and extends deep to reach the position of the drainage tube, the inner and outer diameters of the drainage tube in a swelling state are judged according to clinical state information, the knob 12 is rotated by a hand, the knob drives the elastic stay wire 13, the elastic stay wire 13 drives the fan-shaped part 1121 to be bent and deformed to be adjusted to a proper opening diameter, and then the lacrimal duct drainage tube is slowly pushed out from the nasolacrimal duct by the lacrimal duct drainage tube pushing device 10.

The lacrimal passage drainage tube push-out device 10 is designed in a mode that one end is variable in diameter, 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 variable diameter section 112 to deform, so that the opening diameter of the variable diameter section 112 is changed, and the opening diameter is adapted to the inner diameter and the outer diameter of the drainage tube in the lacrimal passage in a swelling state, and the drainage tube is conveniently and slowly pushed out from the nasolacrimal duct.

Referring to fig. 3, a lacrimal passage drainage tube push-out device 10 according to a second embodiment of the present invention is shown, and the lacrimal passage drainage tube push-out device 10 according to the present embodiment is substantially the same as the lacrimal passage drainage tube push-out device 10 according to the first embodiment, except that:

the end surface of the segment 1121 is recessed toward the knob 12. In the present embodiment, the end surface of the fan 1121 is recessed toward the knob 12 to form an arc-shaped spherical surface recessed toward the knob 12. In other embodiments, the end surface of the fan 1121 may be recessed toward the knob 12 to form a tapered surface pointing in the direction of the knob 12. By designing the way that the end surface of the fan-shaped portion 1121 is recessed toward the direction close to the knob 12, so that after the diameter change adjustment of the diameter change section 112 is performed, the fan-shaped portion 1121 can maintain as much contact area with the drainage tube as possible, and the drainage tube can be more conveniently pushed out from the nasolacrimal duct.

According to the lacrimal passage drainage tube pushing device 10, the end face of the fan-shaped part 1121 is designed to be inwards concave towards the direction close to the knob 12, so that after the diameter change adjustment of the diameter change section 112 is performed, the fan-shaped part 1121 can keep the contact area with the drainage tube as much as possible, and the drainage tube is more conveniently pushed out from the nasolacrimal duct.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

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

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.