Sclera injector capable of fixing depth and eye medicine conveying device

Abstract

The utility model discloses a sclera injector capable of fixing the depth and an eye medicine conveying device, relates to the technical field of medical instruments, and aims to solve the problems of inaccurate puncture depth and secondary pollution during injection. The syringe comprises a needle tube lubricated by a small amount of silicone oil and a movable push rod arranged on the needle tube, a rubber piston which is in sealing contact with the inner wall of the needle tube and moves along the inner wall of the needle tube is arranged at the end of the push rod, a detachable injection needle is arranged at the end of the needle tube, and the length of the injection needle is adjustable. The delivery channel of the injector has extremely low silicone oil component content, the probability of secondary pollution to the interior of the eyeball is reduced, and the effect of safely delivering the medical preparation to the interior of the eyeball at a specified depth can be achieved by replacing injection needles with different injection depths.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more specifically, relate to a kind of scleral syringe and eye drug delivery device with depth. BACKGROUND

[0002] Scleral injection technology is a kind of ophthalmic treatment method, is through the liquid medicine is injected into the scleral tissue of eyeball to realize the treatment of eye disease, according to different symptoms slightly different technical scheme is used, mainly divided into: surface scleral injection method, deep scleral injection method and laser scleral injection method.Surface scleral injection method is to inject drug to the sclera on the surface of eyeball, usually using needle or syringe, this method is suitable for some superficial eye diseases, such as conjunctivitis, keratitis etc.Deep scleral injection method is to inject drug to the scleral tissue in the deep layer of eyeball, usually using needle or syringe, this method is suitable for some deep eye diseases, such as glaucoma, retinal detachment etc.Laser scleral injection method is to inject drug into the scleral tissue of eyeball using laser technology, this method is suitable for some eye diseases that need accurate positioning and dose control, such as macular degeneration, retinal pigment degeneration etc.

[0003] Eye is very complex visual organ, including eyeball, visual pathway and accessory, visual function is completed by eyeball and visual pathway.The existing scleral injection technology often adopts manual injection mode, injection personnel fills liquid medicine into syringe, inserts needle into specific part of eyeball, slowly injects liquid medicine, pulls out needle after injection is completed, and appropriately handles injection site, the operation of this method is strongly dependent, the skill and experience requirement of operator is relatively strict, the structure of eyeball is not familiar with possibly lead to inaccurate and uneven injection depth, to affect treatment effect;Complication risk exists, operator during injection, conventional syringe has more lubricating components (silicone oil), excessive use is not absorbed by tissue can cause granuloma, thrombus, local inflammation etc., and can cause protein aggregation denaturation, reduce effective ingredient content, affect treatment effect;If manual injection method cannot accurately reach dosing depth at one time, inaccurate injection position can lead to reduced curative effect, nerve ending is stimulated by needle, and pain is strong.

[0004] Therefore, how to solve the problem of inaccurate puncture depth and secondary pollution during injection is a problem that the technical personnel in the field are eager to solve. UTILITY MODEL CONTENT

[0005] Therefore, the utility model discloses the purpose is to provide a kind of depth of scleral injector, the delivery channel of injector has little silicone oil component content, reduce the secondary pollution probability to eyeball interior, by replacing different injection depth injection needle, can realize the effect of safe delivery medical preparation to the specified depth of eyeball interior.

[0006] Another purpose of the utility model is to provide a kind of eye drug delivery device including the depth of above-mentioned scleral injector, preparation, storage, injection are integrated, special drug is special, realize high efficiency and low error rate, can greatly avoid the risk of secondary pollution and complication risk in eyeball interior, and also have the advantages of injection depth precision.

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A kind of depth of scleral injector, including injector, injector includes needle tube lubricated with little silicone oil and the push rod of being removably arranged in needle tube, the end of push rod is equipped with rubber piston that is in sealing contact with the inner wall of needle tube and moves along the inner wall of needle tube, the end of needle tube is equipped with detachable injection needle, and the length of injection needle is adjustable.

[0009] Preferably, injection needle is installed on needle seat, and the length of injection needle protruding from the front end face of needle seat is the injection depth of injection needle, and needle seat is connected with needle tube by luer joint, when using injector, the front end face of needle seat is in contact with sclera.

[0010] Preferably, the front end of needle seat is arc chamfered.

[0011] Preferably, injection needle is stainless steel needle, and the injection depth of injection needle is 0.6mm-2.0mm.

[0012] A kind of eye drug delivery device, package above-mentioned depth of scleral injector of any one of the described, eye drug delivery device is disposable device.

[0013] Preferably, it includes blister pack for storing injector and injection needle.

[0014] Preferably, at least two injection needles are arranged in blister pack, the injection depth of one of injection needles is 0.9mm, and the injection depth of another injection needle is 1.1mm.

[0015] Preferably, blister pack is equipped with a vial and disposable sterile injection needle, needle sheath is arranged on the outside of disposable sterile injection needle and injection needle, and medical preparation is arranged in vial.

[0016] Preferably, disposable sterile injection needle is detachably arranged at the end of needle tube, and disposable sterile injection needle is connected with needle tube by luer joint.

[0017] Preferably, the syringe is a split structure or an integral structure.

[0018] The scleral syringe with a fixed depth provided by the utility model comprises a syringe, which realizes drug delivery to the sclera, and the syringe comprises a needle tube lubricated by a small amount of silicone oil and a push rod movably arranged on the needle tube, the amount of silicone oil used for lubricating the needle tube is reduced, the probability of secondary pollution of the eyeball by the silicone oil is reduced, the risk of secondary pollution and complication of the eyeball is greatly avoided, the end of the push rod is provided with a rubber piston in sealing contact with the inner wall of the needle tube and moving along the inner wall of the needle tube, the rubber piston is driven by slowly pulling the push rod backward to realize extraction of the drug solution, the rubber piston is driven by slowly pushing the push rod forward to realize output of the drug solution, the end of the needle tube is provided with a detachable injection needle, the length of the injection needle is adjustable, different lengths of injection needles are replaced to achieve the effect of safely delivering the drug solution to different depths of the sclera, compared with the prior art of manually controlling the depth of the injection needle inserted into the sclera, the injection needle is directly inserted into the sclera by replacing the injection needle with different lengths, the effect of precise injection is achieved, and the operation is convenient, and the injection depth does not need to be controlled according to experience, so that the problem of inaccurate control of the injection depth caused by different experiences of operators is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and other drawings can be obtained according to the provided drawings without creative labor for those skilled in the art.

[0020] Figure 1 The structural schematic diagram of the eye drug delivery device provided by the utility model is shown in the figure.

[0021] Figure 2 The exploded view of the syringe provided by the utility model is shown in the figure.

[0022] Figure 3 The structural schematic diagram of the injection needle provided by the utility model is shown in the figure.

[0023] Figure 4 The use diagram of the syringe provided by the utility model is shown in the figure.

[0024] Reference signs:

[0025] 01-sclera, 02-suprachoroidal space, 03-choroid;

[0026] 1-syringe, 11-needle tube, 12-push rod, 13-rubber piston, 14-injection needle, 15-needle seat;

[0027] 2-blister pack;

[0028] 3-syringe;

[0029] 4-disposable sterile injection needle;

[0030] 5-needle sheath. DETAILED DESCRIPTION

[0031] The technical solutions in 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] In the present application, unless explicitly defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0033] The core of the present application is to provide a depth-adjustable scleral injector. The delivery channel of the injector 1 has a very small content of silicone oil, which reduces the probability of secondary pollution inside the eyeball. By replacing the injection needle 14 of different injection depths, the effect of safely delivering medical preparations to a specified depth inside the eyeball can be achieved. Another core of the present application is to provide an eye drug delivery device comprising the above depth-adjustable scleral injector. The device integrates preparation, storage and injection, is dedicated to specific drugs, realizes high efficiency and low error rate, can greatly avoid the risk of secondary pollution and complications inside the eyeball, and has the advantage of precise injection depth.

[0034] Please refer to Figure 1 , Figure 2 and Figure 4 , a depth-adjustable scleral injector comprises an injector 1.

[0035] Specifically, the drug delivery to the sclera 01 is realized by the syringe 1, the syringe 1 includes a needle tube 11 lubricated by a small amount of silicone oil and a movable push rod 12 arranged in the needle tube 11, by reducing the amount of silicone oil used to lubricate the needle tube 11, the probability of secondary pollution to the eyeball can be reduced, the risk of secondary pollution and complications in the eyeball can be greatly avoided, the end of the push rod 12 is provided with a rubber piston 13 in sealing contact with the inner wall of the needle tube 11 and moving along the inner wall of the needle tube 11, by slowly pulling the push rod 12 to drive the rubber piston 13, the drug solution can be extracted, by slowly pushing the push rod 12 to drive the rubber piston 13, the drug solution can be output, the end of the needle tube 11 is provided with a detachable injection needle 14, the length of the injection needle 14 is adjustable, by replacing the injection needle 14 with different lengths, the effect of safely delivering the drug solution to different depths of the sclera 01 can be achieved, compared with the existing way of manually controlling the depth of the injection needle 14 into the sclera 01, by replacing the injection needle 14 with different lengths, the injection needle 14 is directly inserted into the sclera 01, and the effect of precise injection can be achieved, which is also convenient to operate and does not need to rely on experience to control the injection depth, so as to solve the problem of inaccurate control of the injection depth caused by different experiences of the operators.

[0036] The amount of silicone oil coated in the needle tube 11 in the application is 0.1%-10% of the conventional syringe 1, which can greatly avoid the risk of secondary pollution and complications in the eyeball, in actual application, the needle tube 11 can also use a silicone oil-free design.

[0037] The surface of the needle tube 11 is provided with a scale to display the amount of medicament in the needle tube 11.

[0038] The sclera syringe with adjustable depth is designed to have an injection needle 14 with adjustable injection depth, which can safely deliver medical preparations to a specified depth in the eyeball, and cooperates with a low-silicone oil delivery channel to reduce the probability of secondary pollution in the eyeball.

[0039] Please refer to Figure 3 The injection needle 14 is installed on the needle seat 15, the length of the injection needle 14 protruding from the front end face of the needle seat 15 is the injection depth of the injection needle 14, the needle seat 15 is connected with the needle tube 11 through a luer joint, when the syringe 1 is used, the front end face of the needle seat 15 is in contact with the sclera 01.

[0040] It should be noted that each injection needle 14 is provided with a needle seat 15, the lengths of the injection needles 14 protruding from the front end faces of the needle seats 15 are different, when the injection needle 14 is used to deliver medical preparations to the eyeball, according to the actual injection depth required, the injection needle 14 with the appropriate injection depth is selected, the needle seat 15 with the injection needle 14 is installed on the needle tube 11 through the luer joint, so as to complete the assembly of the syringe 1.

[0041] In the embodiment, the injection needle 14 is integrated with the needle seat 15. When the injection needle 14 is used, the injection needle 14 with a length corresponding to the required injection depth can be selected.

[0042] When the syringe 1 is used to deliver the medical preparation to the eyeball, the injection needle 14 is directly inserted into the eyeball until the front end surface of the needle seat 15 contacts the eyeball. Then, the plunger 12 is slowly pushed to drive the rubber piston 13 to move synchronously, so that the medical preparation in the needle tube 11 can be slowly injected into the eyeball. After the injection is completed, the injection needle 14 is quickly pulled out, and the injection site is properly treated.

[0043] In the above case, the front end of the needle seat 15 is arc-shaped chamfered.

[0044] It can be understood that the front end of the needle seat 15 is arc-shaped chamfered to avoid damage to the eyeball when the needle seat 15 contacts the eyeball.

[0045] In the embodiment, the needle seat 15 is directly clamped with the needle tube 11. The injection end of the needle tube 11 is provided with a small-diameter channel for outputting the preparation. The needle seat 15 includes a clamping base clamped with the injection end and a fixing base connected with the clamping base. The fixing base is used to fix the injection needle 14. The length of the injection needle 14 protruding from the front end surface of the fixing base is the injection depth of the injection needle 14. The connection part of the fixing base and the clamping base is provided with a sealing structure for sealing the small-diameter channel of the injection end of the needle tube 11, so that the preparation flowing out of the small-diameter channel directly enters the injection needle 14.

[0046] The front end surface of the fixing base is arc-shaped chamfered to avoid damage to the eyeball when the fixing base contacts the eyeball.

[0047] Further, the injection needle 14 is a stainless steel needle, and the injection depth of the injection needle 14 is 0.6mm-2.0mm.

[0048] It should be noted that the injection depth of the injection needle 14 selected in the embodiment is in the range of 0.6mm-2.0mm, which is suitable for different people. Both 0.6mm and 2.0mm belong to the injection depth range of the scleral injection needle 14. In actual application, other injection depth ranges can also be set, which are not specifically limited.

[0049] An ocular drug delivery device including the above-described depth-adjustable scleral syringe. The ocular drug delivery device is a disposable device.

[0050] It can be understood that the ocular drug delivery device is set as a disposable device, which meets the medical-grade hygiene requirements.

[0051] On the basis of the above embodiment, a suction blister box 2 for storing the syringe 1 and the injection needle 14 is included.

[0052] It should be noted that by setting the blister box 2, the storage of the syringe 1 and the injection needle 14 is realized, wherein the blister box 2 is provided with a fixing station for clamping and fixing the syringe 1 and the injection needle 14, so as to limit the position of the syringe 1 and the injection needle 14, and avoid the shaking and collision of the syringe 1 and the injection needle 14 in the blister box 2.

[0053] In the above embodiment, the blister box 2 is provided with at least two injection needles 14, wherein one injection needle 14 has an injection depth of 0.9mm, and the other injection needle 14 has an injection depth of 1.1mm.

[0054] It can be understood that according to the depth between the sclera 01 and the choroid 03 of the human body, two specifications of injection needles 14 with injection depths of 0.9mm and 1.1mm are designed, which obviously improves the safety, accuracy and drug efficacy of artificial operation.

[0055] As a preferred embodiment, the blister box 2 is provided with a vial 3 and a disposable sterile injection needle 4, the outer part of the disposable sterile injection needle 4 and the injection needle 14 is provided with a needle sheath 5, and the vial 3 contains a medical preparation.

[0056] It should be noted that by setting the blister box 2, the storage of the syringe 1 and the injection needle 14 is realized, wherein the blister box 2 is provided with a fixing station for clamping and fixing the syringe 1 and the injection needle 14, so as to limit the position of the syringe 1 and the injection needle 14, and avoid the shaking and collision of the syringe 1 and the injection needle 14 in the blister box 2.

[0057] The outer part of the disposable sterile injection needle 4 and the injection needle 14 is provided with a needle sheath 5, so as to realize the protection of the disposable sterile injection needle 4 and the injection needle 14, and make the disposable sterile injection needle 4 and the injection needle 14 in a sterile environment.

[0058] The operation method of the eye drug delivery device is as follows: taking the complete delivery device, first tearing the sealing paper on the blister box 2, taking out the syringe 1, connecting the disposable sterile injection needle 4 through the luer joint, puncturing the steel needle part of the disposable sterile injection needle 4 into the vial 3 to extract the preparation, slowly pulling the push rod 12 to drive the rubber piston 13, and when the drug extraction is completed, the syringe 1 is inverted, and whether there are excess bubbles in the position of the liquid level in the needle tube 11 is observed, if there are, the push rod 12 is slowly pushed to drive the rubber piston 13 to expel the bubbles in the needle tube 11, and finally the disposable sterile injection needle 4 is removed, according to the determined thickness of the sclera 01 and the injection position, the required size of the injection needle 14 is selected, and the injection needle 14 is assembled with the syringe 1 through the luer joint, and the required injection is performed, when injecting, the front end of the needle seat 15 is abutted to the outer surface of the sclera 01, and after use, all components are harmless scrap disposal.

[0059] The embodiment is a process of extracting drug liquid in steps and then injecting, and the whole can also be filled and then directly selected for injection. The embodiment adopts a pre-filled vial 3 to store the drug liquid, and other containers such as ampoules can also achieve the purpose of storing the drug. After the syringe 1 extracts the drug liquid, the redundant air and bubbles in the needle tube 11 are observed by visual observation method to reduce the risk of air or bubbles during injection, improve the accuracy of injection, reduce the pain during injection, and improve the comfort of injection.

[0060] In the above case, the disposable sterile injection needle 4 is detachably arranged at the end of the needle tube 11, and the disposable sterile injection needle 4 is connected with the needle tube 11 through the luer joint.

[0061] It can be understood that the disposable sterile injection needle 4 is connected with the needle tube 11 through the luer joint in the embodiment, but in actual application, the connection mode of the disposable sterile injection needle 4 and the needle tube 11 is not limited as long as the above technical effects can be achieved.

[0062] In the above embodiment, the syringe 1 is a split structure or an integral structure.

[0063] It should be noted that the embodiment adopts an assembled syringe 1, and in actual application scenarios, the complete syringe 1 can also be replaced, and this is not limited.

[0064] In summary, the scleral injector with a fixed depth provided by the utility model has the following use method: in a specified environment, the needle tube 11 coated with low-silicon oil lubricant is combined with the disposable sterile injection needle 4, after extracting the medical preparation in the vial 3, the redundant air is discharged, the disposable sterile injection needle 4 is removed and replaced with the injection needle 14 of the required size, under the premise of avoiding damage to the choroid 03, the injection needle 14 with an injection depth of 0.9 mm or 1.1 mm is selected, and the medical preparation is delivered to the sclera 01 or the choroid 02 area.

[0065] The depth-adjustable scleral injector has simple structure, is easy to operate, is accurate in injection depth, greatly reduces the risk of complications caused by secondary pollution, improves the effective use rate of drugs, and reduces pain.

[0066] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments.

[0067] The depth-adjustable scleral injector and the eye drug delivery device are described in detail. The principles and implementation modes of the depth-adjustable scleral injector are described by applying specific examples. The above description of the embodiments is only used to help understand the method and core idea of the depth-adjustable scleral injector. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principles of the depth-adjustable scleral injector, the depth-adjustable scleral injector can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the depth-adjustable scleral injector.

Claims

1. A scleral injector with a fixed depth, characterized in that, The syringe (1) includes a needle tube (11) lubricated with a small amount of silicone oil and a movable push rod (12) disposed on the needle tube (11). The end of the push rod (12) is provided with a rubber piston (13) that is in sealing contact with the inner wall of the needle tube (11) and moves along the inner wall of the needle tube (11). The end of the needle tube (11) is provided with a detachable injection needle (14) whose length is adjustable.

2. The scleral syringe with a fixed depth according to claim 1, characterized in that, The injection needle (14) is mounted on the needle seat (15). The length of the injection needle (14) protruding from the front end face of the needle seat (15) is the injection depth of the injection needle (14). The needle seat (15) is connected to the needle tube (11) through a Luer connector. When the syringe (1) is used, the front end face of the needle seat (15) contacts the sclera (01).

3. The scleral injector with a adjustable depth according to claim 2, characterized in that, The front end of the needle holder (15) is a curved chamfer.

4. The scleral injector with a adjustable depth according to claim 1, characterized in that, The injection needle (14) is a stainless steel needle, and the injection depth of the injection needle (14) is 0.6mm-2.0mm.

5. An ocular drug delivery device, comprising the scleral injector with a depth-determining capability as described in any one of claims 1-4, characterized in that, The ocular drug delivery device is a disposable device.

6. The ocular drug delivery device according to claim 5, characterized in that, Includes a blister pack (2) for storing the syringe (1) and the injection needle (14).

7. The ocular drug delivery device according to claim 6, characterized in that, The blister box (2) is provided with at least two injection needles (14), one of which has an injection depth of 0.9 mm and the other has an injection depth of 1.1 mm.

8. The ocular drug delivery device according to claim 7, characterized in that, The blister pack (2) contains a vial (3) and a disposable sterile injection needle (4). Both the disposable sterile injection needle (4) and the injection needle (14) are covered with needle sheaths (5). The vial (3) contains medical preparations.

9. The ocular drug delivery device according to claim 8, characterized in that, The disposable sterile injection needle (4) is detachably located at the end of the needle tube (11), and the disposable sterile injection needle (4) is connected to the needle tube (11) via a Luer connector.

10. The ocular drug delivery device according to claim 9, characterized in that, The syringe (1) is either a split structure or an integrated structure.

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