CN211271618U

CN211271618U - Rusty ring type corneal foreign body removing needle

Info

Publication number: CN211271618U
Application number: CN202020012559.7U
Authority: CN
Inventors: 裘项旭
Original assignee: First People's Hospital Of Yongkang
Current assignee: First People's Hospital Of Yongkang
Priority date: 2020-01-05
Filing date: 2020-01-05
Publication date: 2020-08-18
Anticipated expiration: 2030-01-05

Abstract

The utility model discloses a rust ring type cornea foreign matter removal needle belongs to medical instrument technical field. The method comprises the following steps: the circular cutting needle tube, the needle core, the holding handle and the adjusting spanner. In this way, the utility model discloses can solve among the prior art because rust ring is the part in the whole corneal lamella collagen fiber, reject and need to cut off collagen fiber, and needle point appearance or present all other foreign matters reject the problem that cuts off the difficulty to the collagen fiber of rust ring foreign matter a week. After circular cutting, the fiber of the back template layer is cut off, and each layer has no obvious tight connection relatively, so the rust ring is easy to be scraped and cut off completely by the rust ring scraping cutter at the head end of the needle core.

Description

Rusty ring type corneal foreign body removing needle

Technical Field

The invention relates to the field of medical instruments, in particular to a rust ring type corneal foreign body removing needle.

Background

At present, the corneal foreign body is generally removed under a slit lamp microscope by using a No. 4.5 disposable sterile injection needle, the general corneal foreign body is easily removed by the needle head, but the rust ring generated by the iron corneal foreign body is removed, the corneal loss is large by using the sharp and thin needle tip to pull the rust ring, and the corneal foreign body is difficult to remove completely, so that obvious corneal scars are remained after the rust ring type corneal foreign body is removed, and the risk of stabbing the cornea or even penetrating the cornea exists at the sharp front end of a patient with low matching degree.

The cornea rust ring is an annular rust mark formed by oxidation of splashed scrap iron and iron slag which are accumulated on the surface of a cornea, and if the annular rust mark is not scraped in time, the expansion of the cornea rust mark and inflammation can be caused. The nature of the rust ring is: iron oxide (rust) permeates into corneal tissue and binds to proteins to form insoluble ferritin, and rust deposits in corneal tissue. Therefore, the rust ring is not integrated with the iron foreign body, but integrated with the corneal stroma, and is a lamellar collagen fiber tissue structure, and the interlayer separation is relatively easy, so the main difficulty lies in cutting the corneal stroma collagen fiber at the edge of the rust ring, and the general foreign body needle is difficult to realize the cutting function of the lamellar collagen fiber of 360 degrees: the rust ring is taken out by a disposable needle, and is difficult to remove after being broken into a plurality of blocks. The damaged cornea is serious, so that scar is increased and even vision prognosis is poor.

In view of the above-mentioned prior art, the applicant of the present invention has made a lot of repeated and useful researches, and the final products have achieved effective results and have formed the technical solutions to be described below.

Disclosure of Invention

Therefore, the invention provides a rust ring type corneal foreign body removing needle, which aims to solve the problems that in the prior art, as a rust ring is a part of collagen fibers in the whole corneal lamella, collagen fibers need to be cut off, and the collagen fibers of a needle point sample or all other foreign bodies removing needle aiming at the rust ring foreign bodies for one circle are difficult to cut off.

In order to achieve the purpose, the invention provides the following technical scheme: a rust ring type corneal foreign body removal needle comprises: the utility model provides a ring cutting needle tubing, nook closing member, gripping handle and regulation spanner, the nook closing member includes that the tail end is used for controlling the control structure of ring cutting degree of depth and the rust ring of head end scrapes the cutter.

Furthermore, the circular cutting needle tube is of a needle tube-like structure, the length range of the circular cutting needle tube is 5-15 mm, and the diameter of the tube cavity is 0.3-1.0 mm.

Furthermore, the head end of the circular cutting needle tube is an annular cutting edge, and the cutting edge is unilateral and inward.

Furthermore, the needle core for controlling the girdling depth is matched with the diameter of the lumen of the girdling needle tube, the diameter is 0.3-1.0 mm, and the head end of the needle core is a circular plane.

Further, the rust ring scraping cutter edge is arranged on the edge of the circular plane at the head end of the needle core and is a 360-degree cutting edge, and the depth of the cutting edge is 0.05-0.15 mm.

Furthermore, the circular cutting needle tube is connected with the handle, the tube cavity of the circular cutting needle tube is communicated with the tube cavity of the handle, and the central axes are the same.

Furthermore, the circular cutting needle tube is expanded and smoothly transited to the holding handle so as to be beneficial to placing the needle core, and the needle core needle tube section is gradually increased and transited to the holding handle section so as to increase the hardness and stability of the needle core.

Furthermore, the control structure comprises an internal thread structure arranged on the inner surface of the tube cavity of the holding handle and an internal screw rod arranged in the holding handle at the tail end of the needle core, and the internal thread structure is matched with the internal screw rod of the holding handle in a threaded manner.

The invention has the following advantages:

1. the removing needle completes cutting with regular incisal margin and minimum wound to the rust ring for one circle through the circular cutting needle tube with adjustable cutting depth, the cutting depth is uniform and consistent, the histological characteristics of a corneal lamella structure are met, and the rust ring removing with minimum wound is achieved.

2. According to the removing needle, the complete plate layer of the rust ring is scraped and cut through the circular cutting edge at the edge of the head end of the needle core, so that accidental iatrogenic injury is avoided, and complete removal and minimum injury of the rust ring are guaranteed.

Drawings

In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly introduced, and the structures, the proportions, the sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the modifications of any structures, the changes of the proportion relationships, or the adjustments of the sizes, without affecting the functions and the achievable purposes of the present invention, and still fall within the scope of the technical contents disclosed in the present invention.

FIG. 1 is a schematic perspective view of a ring-cutting device according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a scraper blade according to an embodiment of the present invention;

FIG. 3 is a perspective view of one embodiment of the present invention with the parts separated;

FIG. 4 is a second perspective view of the present invention showing the disassembled parts;

fig. 5 is a schematic perspective view of an initial state according to an embodiment of the present invention.

The parts in the drawings are numbered as follows: 1. circularly cutting the needle tube; 2. a needle core; 21. a rust ring scraping cutter; 22. a screw in the grip handle; 3. a grip handle; 4. The spanner is adjusted. 41. The spanner jack is adjusted.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1: the invention provides a rust ring type corneal foreign body removing needle, which comprises: the utility model relates to a circular cutting needle tube 1, a needle core 2, a holding handle 3 and an adjusting spanner 4. Fig. 3-4 are perspective views of the present embodiment in a disassembled state for easy understanding of the structure of the present embodiment.

The head end of the circular cutting needle tube 1 is an annular cutting edge at the edge of the needle tube, the annular cutting edge is an annular inward cutting edge, the inner diameter of a tube cavity of the circular cutting needle tube 1 is 0.5mm, the tail end of the circular cutting needle tube 1 is provided with a holding handle 3, and the surface of a shell of the holding handle 3 can be designed to be but not limited to a groove, a ridge or frosted to increase holding stability and operation easiness.

The holding handle 3 is of a hollow nut-like structure, the screw 22 in the holding handle is matched in the holding handle 3, the inner diameter of a tube cavity of the holding handle 3 is 4mm, the depth of the tube cavity is 10mm, the outer diameter of the tail end of the holding handle 3 is 8mm, the outer diameter of the holding handle is 5mm away from the tail end of the holding handle 3 is 7mm, the outer diameter of the holding handle is 10mm away from the tail end of the holding handle, and the holding handle is gradually transited to the; the centers of the tube cavities are continuous and are the same central axis. The length of the screw 22 in the holding handle is 5mm, the diameter of the screw is matched with the inner thread structure of the tube cavity of the holding handle 3, and the thread pitch of the threads is 1 mm. The tail end of the screw rod 22 in the holding handle is provided with an adjusting wrench jack 41, the adjusting wrench jack 41 is a quadrilateral groove, the side length of the groove is 2.5mm, the depth of the groove is 4mm, the adjusting wrench 4 is inserted to adjust the position of the tail end of the needle core, and the annular cutting depth and the exposed length of the rust ring scraping cutter 21 at the head end of the needle core are further adjusted; the size of the adjusting wrench 4 is matched with the adjusting wrench jack 41 at the tail end of the screw 22 in the holding handle, the adjusting wrench 4 is 100mm long, and the adjusting wrench can be used as an extension rod and is convenient for doctors with different use habits. The head end of a screw rod 22 in the holding handle is connected with a needle core 2 of the matched circular cutting needle tube 1, the edge of the head end of the needle core 2 is 360 degrees provided with a rust ring scraping cutter 21, and the depth of the cutting edge of the rust ring scraping cutter 21 is 0.1 mm.

The adjusting wrench 4 is inserted into the adjusting wrench insertion hole 41, and the adjusting wrench 4 is rotated to drive the screw 22 in the holding handle, thereby controlling the position of the head end of the needle core. In the embodiment, the pitch is 1mm, the outer circumference of the end of the holding handle 3 is divided into 10 equal divisions, which are marked as 10 divisions, and the rotation 1 division is 0.1 mm. In the initial state, the needle core is flush with the cutting edge (as shown in fig. 5), and a corresponding 0-position scale is arranged at the edge of the holding handle 3 opposite to the adjusting wrench 4 (as shown in fig. 5). The flush state can be directly used for pushing iron dust; the cutting edge of the circular cutting needle tube is exposed by 0.1mm after rotating and retreating by 1 lattice, the rust ring foreign matter can be circularly cut by 360 degrees, the fiber of the angle diaphragm layer is cut off after circular cutting, and each layer has no obvious tight connection relatively, so the separation is easy; the rust ring of the board layer can be completely scraped and stripped by a rust ring scraping cutter 21 (shown in figure 2) at the exposed needle core end after rotating for a plurality of turns. If the rusty ring is still remained after 1 grid depth, a layer can be cut further to complete the minimum cutting.

The cutting edge depth set by controlling the position of the needle core is 0.1mm, so that corneal tissue can not be damaged too much, and the safety is higher. Even in special conditions, a small amount of adhered rust rings may exist locally during circular cutting and are not cut off, the rust rings can be cut off smoothly by using a rust ring scraping cutter with a linear cutting edge, and the operation is finished easily.

Example two:

in embodiment 2, the same reference numerals are given to the same structures as those in embodiment 1, and the same description is omitted, and embodiment 2 is mainly designed to be detachable, the grip handle 3 is longitudinally opened and closed for fixing the circular cutting needle tube 1, the end of the circular cutting needle tube is folded back outwards and fixed in the groove of the grip handle 3 after being opened, and the circular cutting needle tube can be fixed well after being closed. The tail end of the stylet 2 is fixed on a fixing structure of the head end of the screw 22 in the holding handle, and the fixing structure can be, but not limited to, a screw-in fixing or a direct-insertion clamping groove type fixing. Namely, the holding handle 3 and the circular cutting needle tube 1 are designed to be detachable, and the needle core 2 and the screw 22 in the holding handle with the tail end structure are designed to be detachable. The advantage of this structure is the detachable structure of handle portion for disposable article structure reduces, and only the head portion of circular cut needle tubing 1, nook closing member 2 needs one alone to sterilize production alone, has reduced the wasting of resources, and the cost is reduced, nevertheless grips handle 3 and grips handle internal screw 22 and still need a plurality of disinfection spare uses in order to protect medical safety. The disadvantages are that the disinfection package is disassembled and can not be used immediately, and the installation is needed, which is inconvenient.

By applying the invention, foreign matters and rusty rings can be removed at one time, the foreign matters do not need to be taken again after a plurality of days, and the damage and scars to corneal tissues caused by the repeated removal of the sharp needle head with the point-shaped tip can be reduced to the maximum extent. The pain of the patient in removing the foreign matters again is avoided, the patient costs less money and the time is saved.

The above description is only 2 embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A rust ring type corneal foreign body removing needle is characterized by comprising: the utility model provides a rust ring scraping cutter, including circular cutting needle tubing (1), nook closing member (2), gripping handle (3) and adjusting spanner (4), the nook closing member includes that the tail end is used for controlling the control structure of circular cutting degree of depth and rust ring of head end scrapes cutter (21).

2. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the circular cutting needle tube is of a needle tube-like structure, the length range of the circular cutting needle tube is 5-15 mm, and the diameter of the tube cavity is 0.3-1.0 mm.

3. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the head end of the circular cutting needle tube is an annular cutting edge, and the cutting edge is unilateral and inward.

4. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the needle core is matched with the diameter of the lumen of the circular cutting needle tube, the diameter is 0.3-1.0 mm, and the head end of the circular cutting needle tube is a circular plane.

5. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the edge of the rust ring scraping cutter is arranged on the edge of the circular plane at the head end of the needle core and is a 360-degree edge, and the depth of the edge is 0.05-0.15 mm.

6. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the circular cutting needle tube is connected with the holding handle, the tube cavity of the circular cutting needle tube is communicated with the tube cavity of the handle, and the central axes are the same.

7. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the tail end of the circular cutting needle tube is expanded and smoothly transited to the holding handle so as to be beneficial to placing the needle core, and the needle core is gradually increased from the circular cutting needle tube section to the holding handle section so as to increase the hardness and stability of the needle core.

8. The rust ring type corneal foreign body removal needle according to claim 1, wherein: the control structure comprises an internal thread structure arranged on the inner surface of the tube cavity of the holding handle and an internal screw rod arranged in the holding handle at the tail end of the needle core, and the internal thread structure is matched with the internal screw rod of the holding handle in a screwing mode.