CN219000851U

CN219000851U - Ophthalmic surgery syringe

Info

Publication number: CN219000851U
Application number: CN202223586398.0U
Authority: CN
Inventors: 潘雪菲
Original assignee: Chengdu Aier Eye Hospital Co Ltd
Current assignee: Chengdu Aier Eye Hospital Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-12
Anticipated expiration: 2032-12-30

Abstract

The application discloses an ophthalmic surgery injector, which comprises a body, wherein a first medicine storage pipe and a third medicine storage pipe which are mutually communicated are arranged in the body, and a liquid discharge pipe and a liquid inlet pipe which are respectively arranged on the body and are respectively communicated with the first medicine storage pipe and the third medicine storage pipe, and the liquid discharge pipe is connected with a needle through a hose; the medicine storage device is characterized in that a plurality of second medicine storage pipes communicated with the first medicine storage pipes are further arranged in the body, and piston rods which slide with the second medicine storage pipes in a sealing manner are arranged in any second medicine storage pipe. According to the utility model, the structure of the plurality of mutually communicated and independently operated second medicine storage pipes and piston rods is used for replacing the existing injector, so that smaller dosage and more accurate injection of smaller-volume medicines can be realized, the injection precision can easily reach 0.01ml, and the operation convenience is obviously higher than that of the existing integrated injector.

Description

Ophthalmic surgery syringe

Technical Field

The utility model relates to the technical field of injectors, in particular to an injector for subconjunctival injection and cornea injection in ophthalmic surgery, and in particular relates to an ophthalmic surgery injector.

Background

The injector is the most commonly used simple medical device and is mainly used for injecting medicines into the body to achieve the therapeutic effect. The structure of the existing injector is relatively uniform, and the existing injector is composed of a tubular structure with an opening at one end, a piston structure in sliding airtight fit with the tubular structure and a needle for injection, and liquid medicament is extracted and injected by drawing the piston structure in the tubular structure. The different syringes are mainly different in capacity, the specification of the syringes is generally 5ml-25ml, the capacity of the syringes for special purposes can be up to 100ml or as low as 3ml, however, the structure and the injection mode are basically consistent no matter the size of the capacity. The injection is usually carried out by matching two hands, the injector is controlled by one hand so that the angle of the needle head is kept unchanged, and then the injection is carried out by pushing medicine by one hand. The above procedure is entirely possible for conventional subcutaneous injections, but requires a more stable procedure for ophthalmic injections, avoiding damage to the eye ball after the injection. Meanwhile, the quantity of the medicine to be injected in the ophthalmic surgery is very small and is generally about 0.2ml to 1ml, so that the existing single-hand operation is not favorable for accurate control, and the injection positions in the ophthalmic surgery are different, and multiple injections are also needed.

Disclosure of Invention

In order to solve the problems that the prior injector is inconvenient to accurately control the angle stability of the head and the injection quantity of the medicine when the prior injector is used for injecting the bulbar conjunctiva in the ophthalmic operation, the application provides an ophthalmic operation injector. According to the utility model, the main body structure of the traditional syringe and the needle are changed into a fixed integrated structure, so that the problem that the eyeballs are damaged due to synchronous shaking of the needle caused by shaking of the main body structure of the syringe during injection is avoided; meanwhile, the utility model performs independent, refined and accurate separation on the main body structure of the traditional injector, so that higher-precision control can be realized during drug injection, and the injection operation of the drug and the needle head state are completely separated without mutual influence, thereby achieving the dual technical effects of stable injection of the needle head and accurate injection of the drug.

In order to solve the technical problems and achieve the technical effects, the technical scheme adopted in the application is as follows:

the ophthalmic surgery injector comprises a body, wherein a first medicine storage pipe and a third medicine storage pipe which are mutually communicated are arranged in the body, and a liquid discharge pipe and a liquid inlet pipe which are respectively arranged on the body and are respectively used for communicating the first medicine storage pipe and the third medicine storage pipe, and the liquid discharge pipe is connected with a needle through a hose; the medicine storage device is characterized in that a plurality of second medicine storage pipes communicated with the first medicine storage pipes are further arranged in the body, and piston rods which slide with the second medicine storage pipes in a sealing manner are arranged in any second medicine storage pipe.

Structural principle:

the body is the main structure of syringe, first medicine storage pipe, second medicine storage pipe and third medicine storage pipe communicate each other, form the space of interim medicine storage. When needs are injected, pour into third medicine storage pipe and first medicine storage pipe into in proper order with the liquid medicine through the feed liquor pipe, because many second medicine storage pipes all communicate with first medicine storage pipe, can make the liquid medicine enter into in the second medicine storage pipe that corresponds through the pull piston pipe. Of course, alternatively, by blocking the liquid discharge tube, the liquid medicine entering the liquid inlet tube is pressurized so that the liquid medicine enters each of the second medicine storage tubes at the same time. As a conventional procedure, no matter what way of injecting the drug is used, an air evacuation operation should be performed to ensure that no excess air is present in the entire syringe prior to injection. When the injection is carried out, the liquid inlet pipe is firstly blocked, any piston rod is pressed down, and the medicine liquid is injected into the eyeball through the needle head connected with the hose. As one of the main purposes of the improvement of the present application, in order to achieve the purpose of independent, refined, accurate separation of the existing syringe, the diameter of the second medicine storage tube adopted in the present application is far smaller than that of the existing syringe, so that the injection accuracy can be further controlled by performing the pushing injection operation on the single piston rod. The structure design changes the problem that the existing injector is difficult to control the drug feeding through single-hand injection, and effectively avoids the problem of excessive drug injection; meanwhile, when injection is carried out, the body and the needle head do not belong to an integral structure like a traditional injector, so that the problem that the eyeballs are damaged due to the fact that the angle of the needle head changes in the process of drug administration is avoided.

In order to facilitate the complete discharge of air, preferably, the first medicine storage tube is positioned at the bottom of any one of the second medicine storage tube and the third medicine storage tube, and any one of the piston rods can extend into the first medicine storage tube through the second medicine storage tube. The piston rod can go deep into the first medicine storage tube, so that the problem that air exists in the second medicine storage tube can be avoided, and when the medicine flows into the first medicine storage tube from the third medicine storage tube, the air in the first medicine storage tube and the third medicine storage tube can be discharged.

For further accurate control of the injection quantity, preferably, the liquid discharge pipe is provided with a first valve for controlling the flow or closing of the liquid medicine, and the liquid inlet pipe is provided with a second valve for controlling the flow or closing of the liquid medicine. When the injection is carried out, no matter what device is adopted for drug supply, after the second valve is closed, when any piston rod is pressed down for injection, the drug can only be injected into eyes of a patient through the needle head, so that the problem that the actual injection quantity is low due to backflow of the drug is avoided.

In order to further improve injection accuracy control and reduce waste of residual medicine as much as possible, preferably, the first medicine storage tube is horizontally arranged in the body, the diameter of the first medicine storage tube is smaller than 2mm, and the diameters of the second medicine storage tube and the third medicine storage tube are smaller than the diameter of the first medicine storage tube.

In order to facilitate the fixation of the injector in the operation process, preferably, the bottom of the body is also provided with a plurality of supports, and the lower end of any support is detachably connected with a sucker.

In a further preferred embodiment, any one of the second medicine storage tubes extends upwards to form a quantitative tube in airtight sliding connection with the piston rod, and scales are uniformly arranged on the piston rod.

In order to improve the convenience and compatibility of the utility model, preferably, the liquid inlet pipe is detachably and hermetically connected with a drug delivery device. The drug delivery device may be a conventional syringe of the prior art.

The beneficial effects are that:

according to the utility model, the structure of the plurality of mutually communicated and independently operated second medicine storage pipes and piston rods is used for replacing the existing injector, so that smaller dosage and more accurate injection of smaller-volume medicines can be realized, the injection precision can easily reach 0.01ml, and the operation convenience is obviously higher than that of the existing integrated injector.

The needle head and the injector body are connected through the thin soft tube, so that the state of the injector is not required to be kept during injection, a doctor can give up all operations on the needle head after the injection, the problem of shaking the hand-held injector during injection is not required to worry, the problem of complete double-hand liberation is realized, and the problem of eyeball damage or excessive injection medicament caused by shaking of the traditional single-hand injection drug pushing is fundamentally avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is an isometric view of the structure of the present utility model.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a full cross-sectional view taken along section symbol A-A in fig. 3.

Fig. 5 is a schematic diagram of the present utility model for drug infusion.

Fig. 6 is a schematic diagram of the present utility model for drug injection.

In the figure: 1-a body; 2-supporting seats; 3-sucking discs; 4-metering tube; 5-a piston rod; 6-a liquid discharge pipe; 7-a first valve; 8-hose; 9-a needle; 10-a liquid inlet pipe; 11-a second valve; 12-a drug delivery device; 13-a first drug storage tube; 14-a second drug storage tube; 15-a third medicine storage tube.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1:

an ophthalmic surgery injector shown in fig. 1-4 in combination with the description comprises a body 1, wherein a first medicine storage tube 13 and a third medicine storage tube 15 which are communicated with each other are arranged in the body 1, and a liquid discharge tube 6 and a liquid inlet tube 10 which are respectively arranged on the body 1 and are used for communicating the first medicine storage tube 13 and the third medicine storage tube 15, and the liquid discharge tube 6 is connected with a needle 9 through a hose 8; the body 1 is also internally provided with a plurality of second medicine storage pipes 14 communicated with the first medicine storage pipes 13, and piston rods 5 which slide with the second medicine storage pipes 14 in a sealing way are arranged in any second medicine storage pipe 14.

Structural principle and working principle are described:

the body 1 is a main structure of the injector, and the first medicine storage tube 13, the second medicine storage tube 14 and the third medicine storage tube 15 are mutually communicated to form a temporary medicine storage space. When injection is needed, the liquid medicine is sequentially injected into the third medicine storage tube 15 and the first medicine storage tube 13 through the liquid inlet tube 10, and the liquid medicine can enter the corresponding second medicine storage tube 14 through the drawing piston tube 5 because the second medicine storage tubes 14 are communicated with the first medicine storage tube 13. Of course, alternatively, by blocking the drain pipe 6, the liquid medicine entering the liquid inlet pipe 10 is pressurized so that the liquid medicine enters each of the second medicine storage pipes 14 at the same time. As a conventional procedure, no matter what way of injecting the drug is used, an air evacuation operation should be performed to ensure that no excess air is present in the entire syringe prior to injection. When injection is performed, the liquid inlet pipe 10 is firstly blocked, and the medicine is injected into the eyeball through the needle 9 connected with the hose 8 by pressing down any piston rod 5. As one of the main purposes of the improvement of the present application, in order to achieve the purpose of independent, refined, accurate separation of the existing syringe, the diameter of the second drug storage tube 14 adopted in the present application is far smaller than that of the existing syringe, so that the injection precision can be further controlled by performing the pushing injection operation on the single piston rod 5. The structure design changes the problem that the existing injector is difficult to control the drug feeding through single-hand injection, and effectively avoids the problem of excessive drug injection; meanwhile, when injection is carried out, the body 1 and the needle are not of an integral structure like a traditional syringe, so that the problem that the eyeballs are damaged due to the fact that the angle of the needle changes in the process of administration is avoided.

Example 2:

on the basis of embodiment 1, this embodiment is described as a preferred embodiment of the present utility model, firstly, in order to facilitate the complete discharge of air and avoid air bubbles from being injected into the eyeball of the patient, on the basis of the structure of embodiment 1, the first medicine storage tube 13 is located at the bottom of any one of the second medicine storage tube 14 and the third medicine storage tube 15, and any one of the piston rods 5 can extend into the first medicine storage tube 13 through the second medicine storage tube 14. The piston rod 5 can penetrate into the first medicine storage tube 13 to avoid the problem that air exists in the second medicine storage tube 14, and when the medicine flows into the first medicine storage tube 13 from the third medicine storage tube 15, the air in the first medicine storage tube 13 and the third medicine storage tube 15 can be discharged. Further, the liquid discharge pipe 6 is provided with a first valve 7 for controlling the flow or closing of the liquid medicine, and the liquid inlet pipe 10 is provided with a second valve 11 for controlling the flow or closing of the liquid medicine. When the injection is carried out, no matter what device is adopted for drug supply, and after the second valve 11 is closed, when any piston rod 5 is pressed down for injection, the drug can only be injected into eyes of a patient through the needle 9, so that the problem that the actual injection quantity is low due to backflow of the drug is avoided. The sequence of operations at the time of injection is as follows:

when the medicine needs to be injected into the injector before injection, any medicine feeding device for containing or feeding medicine is communicated with the liquid inlet pipe 10, the first valve 7 and the second valve 11 are simultaneously opened, each piston rod 5 is pushed into the bottom of the second medicine storage pipe 14, and then medicine injection is carried out; at this time, since the inside of the injector is provided with only one channel for the liquid medicine to circulate, the injector consists of a third medicine storage tube 15, a first medicine storage tube 13, a hose 8 and a needle 9; when the air inside the syringe is naturally squeezed and discharged cleanly with the liquid medicine, the air inside the syringe is exhausted when the needle 9 is found to be discharged from the syringe. When the air is exhausted, the first valve 7 is closed, and the medicine is continuously injected into the third medicine storage tube 15, and at the moment, the pressure P2 in the third medicine storage tube 15 is gradually increased, and the price of the medicine respectively enters the first medicine storage tube 13 due to the fact that the second valve 11 is in an open state, so that the pressure P3 in the first medicine storage tube 13 is also increased, and due to the fact that the first valve 7 is closed, the medicine liquid flows into each second medicine storage tube 14 due to the fact that the pressure P3 is increased, the pressure P1 in the second medicine storage tube 14 is also increased, and the piston rod 5 is pushed to move upwards, so that each second medicine storage tube 14 is filled with the medicine liquid. It should be noted that if the administration device communicating with the inlet tube 10 does not have a pressurizing capability itself, the liquid medicine may be introduced into the corresponding second medicine storage tube 14 by manually pulling the piston rod 5. The drawing mode is to draw the piston rod 5 to reduce the pressure P1, and send the medicine into the second medicine storage tube 14 by using the pressure difference that P3 is more than P1.

When the injection is performed after the injection is completed, the second valve 11 is closed, the third medicine storage tube 15 is separated from the first medicine storage tube 13 and the second medicine storage tube 14, and the first valve 7 is opened; since the air is emptied in advance, only one piston rod 5 is required to be pressed to increase P1, the medicine is pushed into the first medicine storage tube 13, and the medicine liquid medicine can be injected into the eyeball of a patient through the hose 8 and the needle 9 in sequence only through the first valve 7 as the inner space of the first medicine storage tube 13 is unchanged, so that the medicine injection is completed, and the principle is shown in figure 6. Because the second medicine storage tube 14 and the piston rod 5 do not influence the needle 9 at the other end of the hose 8 when injection is carried out, the requirement of the prior art for experience of an operator when injection is carried out through a handheld injector is eliminated, the operation is simpler, and meanwhile, the medicine storage amount of the single second medicine storage tube 14 is about 0.2ml to 0.3ml, so that the use amount is easier to be accurately controlled.

In order to further improve injection accuracy control and reduce waste of residual medicine as much as possible, in this embodiment, the first medicine storage tube 13 is horizontally disposed in the body 1, and the diameter of the first medicine storage tube 13 is smaller than 2mm, and the diameters of the second medicine storage tube 14 and the third medicine storage tube 15 are smaller than the diameter of the first medicine storage tube 13. In a further preferred embodiment, any of the second medicine storage tubes 14 extends upward to form a dosing tube 4 in airtight sliding connection with the piston rod 5, and graduations are uniformly arranged on the piston rod 5. Next, taking the second and third

medicine storage tubes

14 and 15 with a diameter of 1mm as an example, the present embodiment is better than the prior art in terms of precise control of the injection amount of the medicine liquid:

the diameter of the second reservoir tube 14 is 1.2mm, then according to s=pi r ² ＝πd/2 ² It can be seen that the bottom surface s=1.13×10 of the second medicine storage tube 14 ^-6 m ² Volume v=sh=1.13×10 ^-6 *10*10 ^-3 ＝11.3*10 ^-9 m ³ Where h is 10mm, there are 10 graduation units per 1mm of the current syringe.

Then the volume v=11.3×10 ^-3 ml, that is, the second medicine storage tube 14 takes 1mm as a scale unit, and when the medicine storage tube is pushed by 1mm, the corresponding medicine is only 0.0113ml, and the accuracy is improved by nearly 9 times compared with 0.1ml in the prior art; with the length of each second cartridge 14 set to 5cm, then 50 scales can be marked, and the total volume of each second cartridge is about 0.565ml, if the amount of medicament to be injected per operation is 0.2ml, according to the prior art, the syringe needs to be pushed into 2mm units by hand, the operation is very difficult, and more medicaments can be used with little carelessness; while 0.2ml of the medicine needs to be pushed into 18 units, so that the operation is very easy; meanwhile, when the utility model is operated, the operation is not needed to be operated by one hand like the existing injector, but can be operated at one side or by an assistant, the operation difficulty is greatly reduced, the control precision is greatly increased, and the utility model is completely suitable for the ophthalmic operation. Of course, e.g.If the amount of the applied injection is lower, then pushing one unit such as a smaller dose can be achieved by further reducing the diameter of the second cartridge 14, e.g. setting the diameter of the second cartridge 14 to 1mm, then not pushing one graduated piston rod 5 such as 0.00785ml of drug in the patient's eyeball, and so on. If the injection quantity is relatively large, for example, the quantity of 0.8-1ml can be achieved by a plurality of second medicine storage tubes 14, and the diameter of the second medicine storage tubes 14 does not need to be increased, so that the two aspects of high precision and flexible change of the dosage range can be achieved.

In order to facilitate the fixation of the injector during the operation, preferably, the bottom of the body 1 is further provided with a plurality of supports 2, and the lower end of any support 2 is detachably connected with a sucker 3. The body 1 of the injector is adsorbed on an operating table through the sucker, so that the operation is more convenient.

In order to improve the convenience and compatibility of the present utility model, in this embodiment, the liquid inlet tube 10 is detachably and hermetically connected with the drug delivery device 12. The administration set 12 may be a conventional syringe of the prior art.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. Ophthalmic surgical injector comprising a body (1), characterized in that: a first medicine storage pipe (13) and a third medicine storage pipe (15) which are mutually communicated are arranged in the body (1), and a liquid discharge pipe (6) and a liquid inlet pipe (10) which are respectively arranged on the body (1) and are respectively communicated with the first medicine storage pipe (13) and the third medicine storage pipe (15), wherein the liquid discharge pipe (6) is connected with a needle head (9) through a hose (8); the drug storage device is characterized in that a plurality of second drug storage pipes (14) communicated with the first drug storage pipes (13) are further arranged in the body (1), and piston rods (5) which slide in a sealing mode with the second drug storage pipes (14) are arranged in any second drug storage pipe (14).

2. An ophthalmic surgical injector according to claim 1, wherein: the first medicine storage tube (13) is positioned at the bottom of any one of the second medicine storage tube (14) and the third medicine storage tube (15), and any one of the piston rods (5) can extend into the first medicine storage tube (13) through the second medicine storage tube (14).

3. An ophthalmic surgical injector according to claim 2, wherein: the liquid discharge pipe (6) is provided with a first valve (7) for controlling the circulation or closing of the liquid medicine, and the liquid inlet pipe (10) is provided with a second valve (11) for controlling the circulation or closing of the liquid medicine.

4. An ophthalmic surgical injector according to claim 3, wherein: the first medicine storage tube (13) is horizontally arranged in the body (1), the diameter of the first medicine storage tube (13) is smaller than 2mm, and the diameters of the second medicine storage tube (14) and the third medicine storage tube (15) are smaller than the diameter of the first medicine storage tube (13).

5. An ophthalmic surgical injector according to any one of claims 1 to 4, wherein: the bottom of the body (1) is also provided with a plurality of supports (2), and the lower end of any support (2) is detachably connected with a sucker (3).

6. An ophthalmic surgical injector according to claim 5, wherein: any second medicine storage tube (14) extends upwards to form a quantitative tube (4) which is in airtight sliding connection with the piston rod (5), and scales are uniformly arranged on the piston rod (5).

7. An ophthalmic surgical injector according to claim 6, wherein: the liquid inlet pipe (10) is detachably and hermetically connected with a drug delivery device (12).