CN206007412U - Integral type artificial lens injector - Google Patents

Abstract

The utility model discloses an integrated artificial crystal injection device, which comprises an introduction head and an injection device. The introduction head is composed of a crystal groove and a tube cavity with a certain slope connected thereto. The cover, the crystal groove cavity and the upper cover of the groove are buckled; the lumen of the head of the introduction head is continuous with the groove cavity, and gradually transitions from an ellipse to a circle, and the thickness changes from thick to thin; the injector has a slender The rounded rectangular injector lumen, the injector handle and the push pin; the injector lumen is provided with buckle holes, and the injector handle has fixed wings with upper and lower structures and is provided with the aforementioned buckle holes. Fixed buckle, the end of the injector handle is a disc; the introduction head and the injector are integrally formed, and can be disassembled into two parts: one is the injector handle and the push needle, and the other is the introduction head and the injector Lumen, the two parts are fixed through the buckle hole of the lumen of the injector and the buckle of the handle of the injector.

Description

Integrated intraocular lens injector

technical field

The utility model relates to an "all-in-one" intraocular lens injector, which can safely implant various foldable intraocular lenses into human eyes through an incision of ≤3.2mm.

Background technique

Cataract is not only the main cause of blindness in most countries in the world, but also the leading cause of blindness in the elderly population in my country. The population of our country increases by more than 10 million every year, and the population will reach 1.5 billion by 2020, of which the proportion of people aged 50 and above is about 25.0%. According to the current development trend, the number of cataract-blind people in my country will reach 5.0625 million in 2020, and the accumulated number of cataract-blind people will nearly double that of the present.

Regrettably, so far, there is still no proven effective drug that can reverse the development of cataracts. Surgical treatment, especially cataract extraction combined with intraocular lens (IOL) implantation is recognized as the most effective means of cataract treatment. Among them, 1.8-3.2mm incision phacoemulsification combined with posterior chamber folding intraocular lens implantation is an ideal operation for cataract.

The intraocular lens is an artificial lens that can be implanted into the eye to replace the precision optical components of the cloudy lens removed after cataract surgery. It was first implanted by Dr. Harold Ridley in England on November 29, 1949. Intraocular lenses usually consist of a central circular optic surrounded by peripheral haptics (support parts). Due to different materials, intraocular lenses are divided into hard intraocular lenses whose optical part is made of materials such as polymethyl methacrylate (PMMA), and soft intraocular lenses whose optical part is made of materials such as silicone gel, hydrogel, and acrylate. artificial lens. Among them, the soft intraocular lens is also often called a foldable intraocular lens. The initial intraocular lens is a rigid intraocular lens, which needs to be implanted through an incision of more than 6mm (the surgical incision must be roughly the same diameter and width as the optical part). With the development of cataract surgery, the incision is becoming smaller and smaller, and a foldable intraocular lens adapted to it is gradually born, which can be implanted in the eye through an incision of ≤3mm with the help of implant forceps or an implanter. The curled intraocular lens can automatically unfold after entering the eye.

There are two methods of soft intraocular lens implantation: one is traditional implant forceps implantation, and the other is implanter implantation. The latter is currently the most effective method for implanting soft intraocular lenses. Than has the following advantages: ① Keep the minimum incision. Doctors can implant a soft intraocular lens into the eye through an implanter without enlarging the incision after phacoemulsification, so as to minimize astigmatism after corneal surgery. ②Safe and reliable, no damage to the artificial lens. Implantation using the implant method avoids scratches and abrasions on the optical part of the IOL, and does not produce scratches that affect vision. The implant forceps can leave creases or cracks on the surface of the IOL, which can affect vision. ③Good controllability. Using the implanter, the doctor can control the speed of IOL deployment and the whole process of release, including pausing, reversing, and readjusting the position of the lens, so as to avoid the explosive expansion of the lens due to folding tweezers, which may cause rupture of the posterior capsule. ④ Reduce postoperative inflammatory response. Implantation with the implant isolates the folded IOL from the tissue surrounding the incision and the outside of the eye, thus reducing the risk of endophthalmitis caused by bacteria around the eye and postoperative uveitis reactions. ⑤ The incision is safe and free of leakage. Because the implanter does not need to enlarge the incision when implanting the lens, it is safer than implanting forceps, and there will be no complications related to the incision after the operation. Yang Xinghua et al. studied the vision recovery, astigmatism and corneal endothelial cell number after cataract intraocular lens implantation with forceps implantation and implanter implantation, and believed that the two implantation methods were safe and reliable. The recovery of visual acuity is faster after implantation, the corneal edema reaction at the incision is lighter than that of forceps implantation, the astigmatism is small, and the safety is higher, which is worthy of popularization and application.

In order to reduce the risk of infection after intraocular lens implantation and reduce the pain of patients, it is preferable to implant the intraocular lens through a small incision. Therefore, the current trend of implantation surgery after cataract surgery is to implant a soft intraocular lens through a special implanter. With the advent of the era of micro-incision cataract surgery, the diameter of the head end of the intraocular lens implanter has been further reduced. Currently, the minimum incision of the intraocular lens implanter that can be safely used in clinical practice requires a minimum incision of 1.5 mm. Its advantages lie in small surgical incisions and less tissue damage. , Fast wound healing, small postoperative astigmatism, light inflammatory reaction, fast recovery of postoperative vision, and can reduce the chance of intraocular infection.

Soft intraocular lens implanters include non-preloaded intraocular lens types and preloaded intraocular lens types. 1. Non-prefabricated intraocular lens implants usually consist of two parts: an introduction head and an injector. Figure 1 shows the structure of a certain type of non-prefabricated intraocular lens implanter commonly used in clinical practice. The specific operation process is as follows: First, inject a small amount of viscoelastic agent into the implant tube of the introduction head and into the folding groove , put the foldable intraocular lens in the center of the folding groove, and press the edge of the lens optical part and the crystal loop into the folding groove with the help of tweezers (as shown in Figure 1-1); then close the folding wings on both sides of the folding groove to make the lens In a folded state (as shown in Figure 1-2), after checking whether the loop of the lens is in the correct position, insert it into the injector (as shown in Figure 1-3, 1-4); finally, implant The inclined side of the opening of the tube is inserted downward into the pre-opened corneal incision to push the intraocular lens into the eye. Some scholars believe that the use of the implanter avoids the contact between the IOL and the cornea and conjunctiva, and reduces the risk of intraocular infection; the IOL can be implanted through the implanter to avoid damage to the optical surface of the IOL; it is convenient to operate and easy to master , good prognosis after surgery. 2. The pre-installed intraocular lens implanter is usually integrally formed by the introduction head and the injector. Figure 2 shows the structure of a certain type of pre-installed intraocular lens implanter commonly used in clinical practice. It is characterized by pre-loading the IOL into the crystal memory (as shown in Figure 2-1), and the finished product is in the factory. Open the package in the operating room after disinfection, insert the lens memory into the intraocular lens implanter by aligning the arrows on the lens memory and the intraocular lens injector (as shown in Figure 2-2), release the intraocular lens and inject the viscoelastic agent , slowly push the push rod and insert the oblique side of the head of the intraocular lens implanter with a pointed implant head downward into the incision in the eye, and finally implant the intraocular lens into the capsular bag. The whole operation process does not need to borrow other instruments during the operation to load the IOL into the implanter like the non-preloaded implanter. Therefore, the pre-installed type can not only reduce the pressure on assistants, reduce operation time, and improve operation efficiency, but also further reduce the chance of IOL contact with external bacteria during the preparation process, thereby reducing the risk of surgical infection. With the widespread development of cataract phacoemulsification combined with intraocular lens implantation, pre-installed IOL implanters have been used clinically. Xu Dunwen compared the clinical effects of intraocular lens implantation with pre-installed and non-pre-installed implanters. He believed that both implants have better clinical effects, but the pre-installed IOL implanter is more operable. It is a better method of IOL implantation due to its advantages of simplicity, saving time and reducing infection. During the entire implantation process, the intraocular lens does not come into contact with extraocular tissues, reducing the occurrence of postoperative infection.

However, the intraocular lens implanters currently on the market also have corresponding deficiencies. For example, the non-preinstalled ones are cumbersome to install and require a certain learning period. Improper installation can lead to breakage of the intraocular lens loop, twisting and turning of the lens, rotation of the lens, Posterior capsule rupture, etc.; although the pre-installed implanter has the advantages of simple and quick operation, saving time, and reducing infection, but due to design limitations, it can only be suitable for a certain type or type of intraocular lens. For other models or Types of intraocular lenses cannot be preinstalled (related to the different characteristics of the intraocular lens, such as: lens material, shape, refractive index, optical zone diameter, total diameter, optical zone thickness, edge zone thickness, loop thickness and width , vault height, etc.), the scope of use is limited. In addition, because of the high cost of pre-installed implants, clinical application is limited in remote areas. In addition, all types of foldable intraocular lenses and implants (including pre-installed and non-pre-installed) used in clinical practice are basically imported and very expensive. Many intraocular lenses must use company-specific implants. We purchase At the same time as the intraocular lens, the implanter needs to be purchased together, which brings a certain economic burden to the patient.

Utility model content

In view of the above-mentioned deficiencies of the prior art, according to the embodiment of the present utility model, it is hoped to provide a foldable intraocular lens suitable for most of the optical diameters ≤ 7.0mm on the market, two loops, three loops, and four loops are all available, reducing the operating cost. Difficulty, reduce surgical risk, improve implantation efficiency, cheap, and most importantly, safe and effective, can fold the soft intraocular lens and safely implant it into the human eye through an incision of ≤ 3.2mm. device.

According to the embodiment, the utility model provides an integrated intraocular lens injector, which includes an introduction head and an injector. The innovation is that the introduction head is composed of a crystal groove and a lumen with a certain slope Composition, the crystal groove has a groove upper cover, a crystal groove cavity and a groove upper cover buckle; the lumen of the head of the introduction head is continuous with the groove cavity, and gradually transitions from an ellipse to a circle, and the thickness varies from thick to Thinning; the injector has a slender rounded rectangular injector lumen, injector handle and push needle; the injector lumen has fixed wings with upper and lower structures and is provided with buckle holes, and the injector handle There is a buckle fixed with the aforementioned buckle hole, and the end of the injector handle is a disc; the introduction head and the injector are integrally formed and can be disassembled into two parts: one is the injector handle and the push needle, The second is the introduction head and the lumen of the injector, and the two parts are fixed through the buckle hole of the lumen of the injector and the buckle of the handle of the injector.

According to one embodiment, in the aforementioned integrated intraocular lens injector of the present utility model, the lumen of the head of the introduction head is slightly on the upper side, forming an angle of 15° with the cavity of the groove; the top of the lumen of the head of the introduction head has an inclined plane opening , the opening of the inclined plane is at an angle of 45° downward.

According to one embodiment, in the above-mentioned integrated intraocular lens injector of the present utility model, the push pin is cylindrical, the bifurcation of the head is at an angle of 60°, the diameter of the push pin is 1.4 mm, and the length is 42.5 mm; the injector The handle is a flat cross shape with a length of 62mm and a thickness of 2mm. The distance between the upper buckle and the end of the push pin is 9mm; the end of the injector handle is a disc with a diameter of 25mm and a thickness of 2mm; The length is 144.5mm; the buckle hole on the lumen of the injector is 2.5*3mm, and the distance from the tail edge of the lumen of the injector is 9mm; the height of the fixed wing on the lumen of the injector is 41.5mm, and the width is 17.0mm, the distance from the root of the fixed wing to the tail edge of the injector lumen is 22.5mm.

According to one embodiment, in the aforementioned integrated intraocular lens injector of the present invention, the height, width, and wall thickness of the crystal groove are consistent with the height, width, and wall thickness of the injector. Among them, the thickness is 9mm, the width is 14mm, and the wall thickness is 1.2mm.

According to one embodiment, in the above-mentioned integrated intraocular lens injector of the present invention, the upper cover of the groove is in the shape of a "concave" surface, and there is a small hole in the center with a diameter of 2 mm, and two crystal pressure beams are arranged in the upper cover of the groove. The distance between the two crystal pressure beams is 3 mm, the width of the crystal pressure beam is 1.4 mm, and the height of the crystal pressure beam is 1.3 mm. The top of the buckle on the groove cover is 2.7mm higher than the closed crystal groove cover.

According to one embodiment, in the aforementioned integrated intraocular lens injector of the present utility model, the outer diameter of the inclined surface opening of the head of the introduction head is ≤3.2 mm, the length of the lumen of the head of the introduction head is 20 mm, and there is a scale at a distance of 5 mm from the top of the head. Wire.

According to one embodiment, in the aforementioned integrated intraocular lens injector of the present invention, the bottom surface of the injector cavity and the bottom surface of the crystal groove cavity are kept at the same level and are continuous. Wherein, the length of the lumen of the injector is 62 mm, and the length of the groove cavity is 18.5 mm.

According to one embodiment, in the aforementioned integrated intraocular lens injector of the present utility model, the crystal groove cavity is a rounded rectangle with a width of 7.6mm, the central height of the groove cavity is 2.3mm, and the distance between the crystal pressure beam and the bottom surface of the groove cavity is The distance between them is 1.0 mm; the end of the head lumen of the introduction head is continuous with the connected crystal groove cavity, with a width of 7.6 mm and a height of 2.8 mm.

According to one embodiment, in the above-mentioned integrated intraocular lens injector of the present invention, the crystal groove upper cover of the introduction head and the groove cavity are integrally formed, and the groove upper cover can be closed and closed through the pivot between the two. Opening action; the pivot is 18.5mm long and 0.3mm thick.

According to one embodiment, in the aforementioned integrated intraocular lens injector of the present utility model, materials can be selected that are safe and non-toxic, have a certain hardness and elasticity, and have good tissue compatibility, such as polypropylene, silica gel, 3D printing materials (such as : photosensitive resin), etc.; 3D printing or mold forging can be used in terms of technology.

Compared with the existing design, the integrated intraocular lens injector of the utility model can be disassembled into two parts: one is the handle of the injector and the push needle; the other is the introduction head and the lumen of the injector. The two are fixed through the buckle hole of the lumen of the injector and the buckle of the handle of the injector, so as to prevent the handle of the injector and the push needle from slipping out of the lumen, damage the shape of the head of the push needle, and then affect the injection of the intraocular lens. In addition, because the head of the push needle has a bifurcated structure, it must always keep a vertical direction so that it can effectively push against the edge of the optical part of the intraocular lens; the handle of the injector is designed in a flat cross shape to prevent the push needle from rotating, otherwise it will Affects bolus injection of intraocular lenses. When placing the artificial lens, you need to use tweezers to put the crystal flat into the middle of the groove cavity (refer to the artificial lens placement diagram, do not put the crystal position upside down), then close the upper cover of the groove and snap it through the upper cover of the groove Fix the intraocular lens down with the help of the two crystal pressure beams on the upper cover of the groove; before injecting the artificial lens, inject viscoelastic agent into a small hole in the center of the upper cover of the groove to fill the entire lumen of the introduction head. Expelling the air in the lumen, on the one hand, acts as a lubricant, and on the other hand, assists the crystal pressure beam to further press down to make the artificial lens close to the bottom of the groove, so as to ensure that the bifurcated structure of the push pin head can reach the edge of the crystal; In the process of injecting intraocular lens, keep the slope opening at the top of the guide tube facing down (about 45°), and ensure the bifurcated structure of the tip of the push needle through a certain slope (about 15°) of the lumen of the guide head. It can effectively touch the smooth bottom of the lumen of the head of the introduction head, and push to the edge of the optical part of the intraocular lens, so that the intraocular lens can be completely folded and safely enter the eye through an incision ≤ 3.2mm, and finally the intraocular lens is completed. implant.

Description of drawings

Figures 1-1, 1-2, 1-3 and 1-4 are schematic structural views of a certain clinical model of a non-preassembled intraocular lens implanter;

Figures 2-1 and 2-2 are schematic structural diagrams of a pre-installed intraocular lens implanter of a clinical model;

Figures 3-1, 3-2, 3-3 and 3-4 are structural schematic diagrams of the integrated intraocular lens injector;

Fig. 4 is a schematic view of the structure of the side view of the integrated intraocular lens injector;

Fig. 5 is a schematic diagram of the top view structure of the integrated intraocular lens injector;

Fig. 6 is a structural schematic diagram of the bottom view of the integrated intraocular lens injector;

Fig. 7 is a schematic diagram of the sagittal plane structure of the integrated intraocular lens injector;

Fig. 8 is a schematic diagram of the coronal structure of the handle portion of the integrated intraocular lens injector;

Fig. 9 is a schematic diagram of the top view of the groove cavity of the crystal introduction head of the integrated intraocular lens injector;

Fig. 10 is a schematic diagram of the structure of the coronal surface of the groove part of the introduction head of the integrated intraocular lens injector;

Fig. 11 is a schematic view of the structure of the integrated intraocular lens injector viewed from the perspective of the introduction head.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, further set forth the utility model. These embodiments should be understood as only for illustrating the utility model but not for limiting the protection scope of the utility model. After reading the contents of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent changes and modifications also fall within the scope defined by the claims of the utility model.

The integrated intraocular lens injector provided by the preferred embodiment of the present invention is integrally formed by the introduction head 100 and the injector 200, as shown in Fig. 3-11.

The introduction head 100 is composed of an "all-in-one" groove 101 for placing an intraocular lens and a lumen 102 with a certain slope connected thereto. Wherein, crystal groove 101 is then made of groove loam cake 103 (comprising groove loam cake aperture 106, two crystal pressure beams 107 in groove loam cake), groove cavity 104, groove loam cake buckle 105, The connecting pivot 110 between the groove loam cake and the groove cavity is formed. In addition, the groove cavity 104 is semicircular. The lumen 102 of the head of the introduction head is continuous with the crystal groove cavity 104, and its shape gradually changes from an ellipse to a circle, and its thickness changes from thick to thin (the top is the thinnest), and there is an upward angle of about 15° with it; The bevel opening 108 at the top of the lumen 102 leading into the head is about 45° and kept downward during the injection.

The injector 200 consists of an elongated rounded rectangular injector lumen 201, an injector handle 202 (in a flat cross shape), a push pin 203 (in a cylindrical shape, the head is a bifurcated structure 208, About 60 ° angle), the buckle hole 204 of the injector lumen and the buckle 205 of the injector handle are composed. The lumen 201 of the injector has a fixed wing 206 with a vertical structure, and the end of the handle 202 of the injector is a disc 207 .

As shown in Fig. 3 : the integrated intraocular lens injector is integrally formed by the introduction head 100 and the injector 200; it can be disassembled into two parts: one is the injector handle 202 and the push needle 203; the other is the introduction head 100, Lumen 201 of the injector. The two are fixed through the buckle hole 204 of the injector lumen and the buckle 205 of the injector handle, so as to prevent the injector handle 202 and the push pin 203 from slipping out of the lumen 201 and damage the shape of the head of the push pin 203, and then Affects the bolus injection of the intraocular lens 300 . In addition, because the head of the push pin 203 is in a bifurcated structure 208 at an angle of 60°, it must always be kept vertical so that it can effectively push against the edge of the optical part of the intraocular lens 300, so the injector handle 202 is designed to be flat. Cross shape prevents the push pin 203 from rotating, otherwise the injection of the intraocular lens 300 will be affected. Before placing the intraocular lens 300, keep the upper cover 103 of the crystal groove of the introduction head open. Once the crystal 300 is placed in the groove cavity 104, in order to keep the groove cavity 104 in a sealed state, the groove upper cover 103 is closed by the buckle 105 After being fixed, it is difficult to open again. If the groove chamber 104 really needs to be opened due to surgical reasons, when the intraocular lens 300 is reimplanted, in principle, a new intraocular lens injector needs to be replaced. When placing the intraocular lens 300, it is necessary to use tweezers to put the crystal flat into the middle of the groove cavity 104 (as shown in the figure, do not put the crystal position upside down), then close the groove upper cover 103 and pass the groove upper cover The buckle 105 is fixed, and the intraocular lens 300 is pressed down by means of the two crystal pressure beams 107 of the upper cover 103 of the groove, so as to ensure that the bifurcated structure at the head of the push pin 203 can push against the edge of the crystal 300 . Before injecting the intraocular lens 300 , it is necessary to inject viscoelastic agent through the small hole 106 in the center of the upper cover of the groove. On the one hand, it acts as a lubricant, and on the other hand, the auxiliary crystal pressure beam 107 further presses down to make the intraocular lens 300 close to the bottom of the groove. The fixed wing 206 on the injector lumen 201 and the disk 207 at the end of the injector handle 202 conform to the requirements of ergonomics. When pushing the injector handle, it is labor-saving and not easy to release.

Figure 4 and Figure 5 show the side and upper view structural schematic diagrams of the integrated intraocular lens injection device, the introduction head 100 and the injection device 200 are integrally formed; the introduction head groove upper cover 103 is in a closed state; the introduction head groove 101 The thickness of the injector 200 is the same as that of the injector 200; the inclined opening 108 at the top of the lumen leading into the head is about 45°, and the inclined surface is kept downward during the injection.

The structural diagram of the bottom view of the integrated intraocular lens injection device shown in Figure 6, the introduction head 100 and the injection device 200 are integrally formed; the introduction head groove upper cover 103 is in an open state; The width of the device 200 is the same; the slope opening 108 at the top of the lumen of the introduction head is about 45°, and the slope is kept facing downward during the injection process;

Fig. 7 shows the sagittal structural schematic view of the integrated intraocular lens injector, the introduction head 100 and the injector 200 are integrally formed; the groove upper cover 103 of the introduction head is in a closed state; the thickness of the groove 101 of the introduction head The injector 200 has the same thickness; the head lumen 102 of the introduction head is continuous with the crystal groove cavity 104, with an included angle of about 15°; the slope opening 108 at the top of the catheter of the introduction head is about 45°, and the slope is kept during the injection process Facing downward, the opening diameter (outer diameter) of the lumen at the top is designed to be ≤3.2mm; viscoelastic agent can be injected through a small hole 106 in the center of the upper cover of the groove to fill the lumen of the entire introduction head to remove the air in the lumen. On the other hand, press down to make the artificial lens close to the bottom surface of the groove; the bifurcated structure of the push pin head is placed in the push pin pillow 109, and the smooth lumen bottom surface in the push pin pillow 109 is in contact with the crystal concave. The bottom surface of the cavity remains at the same level and is continuous; the buckle hole 204 of the injector lumen is fixed with the buckle 205 of the injector handle, so as to prevent the injector handle 202 and the push pin 203 from slipping out of the tube cavity 201 and causing damage. The shape of the head of the push needle further affects the injection of the intraocular lens 300 .

Figure 8 shows a schematic view of the coronal structure of the handle part of the integrated intraocular lens injector. The lumen 201 of the injector has a rounded rectangular structure, and the handle 202 of the injector has a flat cross-shaped structure to prevent the rotation of the push needle. Otherwise it will affect the bolus of intraocular lens.

Figure 9 shows a schematic diagram of the top view of the groove cavity of the crystal introduction head of the integrated intraocular lens injector. The groove upper cover 103 of the introduction head is in an open state; the groove upper cover 103 includes the groove upper cover small hole 106, the groove Two crystal pressure beams 107 in the upper cover 103; the groove upper cover 103 is closed and fixed by the groove upper cover buckle 105; the groove cavity 104 of the introduction head is a rounded rectangle with a width of about 7.6mm (due to the difference in manufacturing process There may be a certain error), which is continuous with the lumen of the head of the introduction head.

Figure 10 shows a schematic structural view of the coronal surface of the groove part of the introduction head of the integrated intraocular lens injector. The upper cover 103 of the groove of the introduction head is closed and fixed by the buckle 105 of the upper cover of the groove; The groove cavity is integrally formed, and the groove upper cover 103 can be closed and opened through the pivot 110 between the two; the two crystal pressure beams 107 in the groove upper cover press the artificial lens downward to ensure The bifurcated structure 208 at the head of the push pin can push against the edge of the crystal, while the push pin walks therein, which acts as a fixation. In addition, the central height of the groove cavity is approximately 2.3 mm, the distance between the crystal pressure beam and the bottom surface of the groove cavity is approximately 1 mm, and the distance between two crystal pressure beams is approximately 3 mm. Wherein, the width of the crystal pressure beam is 1.4 mm, the height of the crystal pressure beam is 1.3 mm, and the diameter of the push pin is about 1.4 mm.

Figure 11 is a schematic view of the structure of the integrated intraocular lens injector from the perspective of the introduction head. The groove upper cover 103 of the introduction head is closed and fixed by the groove upper cover buckle 105; Integral molding, through the pivot 110 between the two, the groove upper cover 103 can be closed and opened; the opening of the crystal introduction head is connected with the lumen of the introduction head lumen, the crystal groove cavity, and the push pin pillow support. Continuous; the fixed wing 206 on the lumen 201 of the injector and the disc 207 at the end of the handle 202 of the injector meet the requirements of ergonomics, and it is labor-saving and not easy to release when pushing the handle of the injector.

The newly designed one-piece intraocular lens injection device is integrally formed by the introduction head and the injection handle, which meets the requirements of ergonomics, and is easy to operate, cheap, safe and effective. The specific operation process is as follows: First, check whether the package is in good condition, whether it has been sterilized, and whether it is within the validity period, and then hold the integrated intraocular lens injector with the upper cover of the crystal groove opened, and use tweezers to put the foldable intraocular lens into the The middle position of the groove cavity (refer to the intraocular lens placement diagram on the injector lumen, do not put the lens position upside down); then, close the upper cover of the groove and fix it with the buckle of the upper cover of the groove, with the help of the groove The two crystal pressure beams on the upper cover press down the intraocular lens; then inject viscoelastic agent into a small hole in the center of the upper cover of the groove to fill the entire lumen of the introduction head to remove the air in the lumen. On the other hand, the auxiliary crystal pressure beam further presses down to make the artificial lens close to the bottom of the groove, so as to ensure that the bifurcated structure of the push pin head can reach the edge of the crystal; finally, during the process of injecting the artificial lens, keep The inclined surface opening at the top of the catheter of the introduction head is facing downward (about 45°), and through the lumen of the head head with a certain slope (about 15°), it is ensured that the bifurcated structure of the push needle head can effectively contact the head of the introduction head The smooth bottom of the lumen is pushed up to the edge of the optical part of the intraocular lens, so that the intraocular lens can be completely folded and safely enter the eye through an incision ≤ 3.2mm, and the implantation of the intraocular lens is finally completed.

Claims (10)

1. a kind of integral type artificial lens injector, including importing head and injector, is characterized in that, import head by crystal groove and The tube chamber with constant slope being attached thereto is constituted, and crystal groove has recessed groove upper cap, crystal groove cavity and recessed groove upper cap card Button；The tube chamber for importing head portion is mutually continuous with groove cavity, and is circular by oval gradually transition, and thickness is thinning by thickness；Inject Utensil has an elongated round rectangle injector tube chamber, injector handle and pushes pin；There is on injector tube chamber up-down structure Fixed-wing is simultaneously provided with block button hole, and injector handle is provided with and coordinates fixed buckle with previous mentioned snap hole；Injector handle end For disk；Import head and injector is integrally formed, and be detachably two parts：One is injector handle and to push pin, and which two is Head and injector tube chamber is imported, buckle of the two parts by the block button hole of injector tube chamber with injector handle is fixed.

2. integral type artificial lens injector as claimed in claim 1, is characterized in that, import head portion tube chamber slightly biased on, It is in 15 ° of angles with groove cavity；The tube chamber top for importing head portion has inclined-plane opening, and Open Side Down on inclined-plane in 45 ° of angles.

3. integral type artificial lens injector as claimed in claim 1, is characterized in that, push pin in cylinder, and head bifurcated is in 60 ° of angles, a diameter of 1.4mm for pushing pin, length is 42.5mm；Injector handle is flat cross, and length is 62mm, thick Degree be 2mm, thereon buckle distance push pin afterbody distance be 9mm；Injector handle end is disk, and a diameter of 25mm is thick Spend for 2mm；The length of injector is 144.5mm；Block button hole on injector tube chamber is 2.5*3mm, apart from injector tube chamber tail The distance at portion edge is 9mm；On injector tube chamber, the height of fixed-wing is 41.5mm, and width is 17.0mm, the root of fixed-wing Distance to injector tube chamber tail edge is 22.5mm.

4. integral type artificial lens injector as claimed in claim 1, is characterized in that, the height of crystal groove, width, wall thickness Degree is consistent with the height of injector, width, wall thickness, is highly 9mm, and width is 14mm, and wall thickness is 1.2mm.

5. integral type artificial lens injector as claimed in claim 1, is characterized in that, recessed groove upper cap is in " recessed " face shape, in There is a hole diameter centre for 2mm, and it is 3mm that there are in recessed groove upper cap the distance between two crystal press beams, two crystal press beams； The width of crystal press beam is 1.4mm, and crystal pressure depth of beam is 1.3mm, and after on groove, cover latch top is higher by closure, crystal is recessed Groove upper cap 2.7mm.

6. integral type artificial lens injector as claimed in claim 2, is characterized in that, import the external diameter of head portion inclined-plane opening ≤ 3.2mm, the length for importing head portion tube chamber are 20mm, have a graduation mark at distance importing crown end 5mm.

7. integral type artificial lens injector as claimed in claim 3, is characterized in that, injector tube chamber bottom surface and crystal groove The bottom surface holding same level in chamber is simultaneously mutually continuous；The length of injector tube chamber is 62mm, and the length of groove cavity is 18.5mm.

8. integral type artificial lens injector as claimed in claim 1, is characterized in that, the rounded rectangle of crystal groove cavity, wide Spend for 7.6mm, the center height of groove cavity is 2.3mm, and distance of the crystal press beam apart from groove cavity bottom surface is 1.0mm；Import head The end of head tube chamber is mutually continuous with the crystal groove cavity being attached thereto, and width is 7.6mm, is highly 2.8mm.

9. integral type artificial lens injector as claimed in claim 1, is characterized in that, import the recessed groove upper cap of head crystal and groove Chamber is integrally formed, and by pivot between the two, recessed groove upper cap is closed, opening action；The a length of 18.5mm of the pivot, Thick is 0.3mm.

10. integral type artificial lens injector as claimed in claim 1, is characterized in that, material is beaten for polypropylene, silica gel or 3D Printed material material；Preparation technology is forged using 3D printing or mould.