Intraocular lens injector

Abstract

A push rod is inserted into an outer shell from the tail portion of the outer shell, a spring and a silica gel head are sequentially installed at the front end of the push rod, a leading-in head is installed at the front end of the outer shell, an intraocular lens is arranged in the leading-in head, and during installation, the leading-in head is obliquely inserted into the outer shell from a leading-in head inlet in the front end of the outer shell. During injection, the push rod is stressed to move forwards and drives the spring and the silica gel head to move forwards at the same time, the silica gel head makes contact with the intraocular lens in the guide-in head, the intraocular lens is pushed out of the guide-in head into the human eyes, and the guide-in head is fixed. The distance from the push rod to the leading-in head is reduced, so that the push rod can accurately enter the leading-in head, the success rate that the push rod accurately reaches the leading-in head is improved, the phenomena of loop clamping, leading-in head explosion, intraocular lens damage and the like are effectively reduced, the influence on the personal safety of a patient is avoided, and the safety of the patient is improved. And the workload of medical staff and the whole operation time are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial lenses, in particular to an artificial lens pusher. Background Art

[0002] The use of artificial lenses is currently the most effective method for correcting aphakic refraction. In the prior art, during operation, the artificial lens is usually placed in the artificial lens implantation system, and the artificial lens is implanted into the eye through the implantation system. During the implantation process, medical staff are required to adjust the push rod to correctly enter the introduction head, which is not only extremely inconvenient to operate, but also affects the safety of the patients implanted with artificial lenses and the integrity of the artificial lens, and increases the workload of medical staff. In addition, since the push rod of the artificial lens implantation system in the prior art is too far away from the introduction head, the distance for the push rod to reach the introduction head is too long, and the push rod will swing before reaching the introduction head, which can easily cause the push rod to fail to correctly enter the introduction head, and the success rate of the push rod accurately reaching the introduction head is low, thereby affecting the injection of the artificial lens, which will lead to the occurrence of phenomena such as clamping loops, head explosion of the introduction head, lens damage, and impact on the patient's body, etc. Therefore, it is urgent to develop an artificial lens injector to solve the above technical problems.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an intraocular lens pusher, which reduces the distance for the push rod to reach the introduction head, enables the push rod to accurately enter the introduction head, improves the success rate of the push rod accurately reaching the introduction head, effectively reduces the occurrence of loop clamping, introduction head explosion, intraocular lens damage and the like, avoids affecting the patient's personal safety, reduces the workload of medical staff and the entire operation time, has broad application prospects, and is conducive to popularization and application.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an artificial lens injector, including a shell, a push rod, an introduction head, a spring and a silicone head. The push rod is inserted into the shell from the rear end of the shell, the spring and the silicone head are installed in sequence at the front end of the push rod, and the introduction head is installed at the front end of the shell. An artificial lens is arranged in the introduction head. During installation, the introduction head is obliquely inserted into the shell from the introduction head entrance at the front end of the shell, and the folding wings of the introduction head are inserted into the introduction head slot at the introduction head entrance for fixation. During injection, the push rod is forced to move forward while driving the spring and the silicone head forward at the same time. The silicone head contacts the artificial lens in the introduction head, and the artificial lens is pushed out from the introduction head into the human eye. The spring plays a damping role to enhance the smoothness of injection.

[0006] Preferably, the shell includes a shell body, a snap groove is provided at the tail of the shell body, a shell handle is provided in front of the snap groove, an introduction head entrance for obliquely inserting the introduction head is provided at the top of the head of the shell body, an introduction head snap groove for fixing the introduction head is provided at the front end of the introduction head entrance, and an introduction head outlet is provided at the front end of the shell body.

[0007] Preferably, the push rod includes a push rod body, a push rod handle is provided at the rear end of the push rod body, a guide groove is provided in the middle part, a main body matching column is provided in front of the guide groove, a groove is provided between the guide groove and the main body matching column, a buckle is connected to the rear side of the main body matching column, and the buckle is located at the groove. After the push rod is assembled with the shell, the buckle is engaged with the buckle groove of the shell to prevent the push rod from moving backward in the shell. A slope is provided at the engagement between the buckle and the buckle groove. During push injection, the buckle can be separated from the buckle groove and move forward. After the push injection is completed, the push rod moves backward, and the buckle falls back into the buckle groove and re-engages with the buckle groove. A push rod ejector is provided at the front end of the push rod, and the spring is sleeved on the push rod body from one side of the push rod ejector, and a spring limiter is provided in front of the main body matching column.

[0008] Preferably, the introduction head is a foldable introduction head in the shape of a knife handle, with two folded wings at the knife head, which are fixed by a folding wing buckle, and the two folding wings are connected to the lens implantation cavity. The front end of the lens implantation cavity is the artificial lens outlet, and the outside of the lens implantation cavity is provided with an introduction head limiter.

[0009] Preferably, the silicone head comprises a silicone head body, which is cylindrical and has a push rod ejector pin hole and a viscoelastic agent storage hole on both sides thereof. The push rod ejector pin hole is used to insert a push rod ejector pin, and the outer wall of the silicone head body on one side of the viscoelastic agent storage hole is slightly expanded outward to form a crystal contact head.

[0010] The utility model provides an artificial lens pusher, which has the following beneficial effects.

[0011] The utility model reduces the distance that the push rod needs to reach the introduction head, enables the push rod to accurately enter the introduction head, improves the success rate of the push rod accurately reaching the introduction head, effectively reduces the occurrence of loop clamping, introduction head explosion, artificial lens damage and the like, avoids affecting the personal safety of patients, and reduces the workload of medical staff and the entire operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of an intraocular lens injector provided by the utility model;

[0013] Figure 2 A cross-sectional view of an intraocular lens injector provided by the utility model;

[0014] Figure 3 An exploded view of an intraocular lens injector provided by the utility model;

[0015] Figure 4 A schematic diagram of the shell structure of an intraocular lens injector provided by the utility model;

[0016] Figure 5 A schematic diagram of the push rod structure of an intraocular lens pusher provided by the utility model;

[0017] Figure 6 A schematic diagram of the structure of an introduction head of an intraocular lens injector provided by the utility model;

[0018] Figure 7 The present invention is a schematic structural diagram of a silicone head of an intraocular lens injector provided by the utility model.

[0019] In the figure:

[0020] 1. Shell 101. Shell body 102. Introduction head inlet 103. Introduction head outlet 104. Buckle slot 105. Shell handle 106. Introduction head slot 2. Push rod 201. Push rod handle 202. Guide groove 203. Main body matching column 204. Buckle 205. Push rod ejector pin 206. Push rod body 207. Spring limit 3. Introduction head 301. Artificial lens outlet 302. Introduction head limit 303. Folding wing 304. Lens implantation cavity 305. Folding wing buckle 4. Spring 5. Silicone head 501. Silicone head body 502. Lens contact head 503. Push rod ejector pin hole 504. Viscoelastic storage hole. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific embodiments and drawings to help understand the content of the present invention.

[0022] like Figure 1-3The figures are respectively a schematic diagram, a cross-sectional view and an exploded view of an intraocular lens injector provided by the utility model. The intraocular lens injector comprises a housing 1, a push rod 2, an introduction head 3, a spring 4 and a silicone head 5. The push rod 2 is inserted into the housing 1 from the rear end of the housing 1, the spring 4 and the silicone head 5 are sequentially installed at the front end of the push rod 2, the introduction head 3 is installed at the front end of the housing 1, and an intraocular lens is arranged in the introduction head 3. When installing, the introduction head 3 is obliquely inserted into the housing 1 from the introduction head entrance 102 at the front end of the housing 1, and the folding wing 303 of the introduction head 3 is inserted into the introduction head slot 106 of the introduction head entrance 102 for fixing. When injecting, the push rod 2 is forced to move forward and at the same time drives the spring 4 and the silicone head 5 to move forward. The silicone head 5 contacts the intraocular lens in the introduction head 3, and the intraocular lens is pushed out from the introduction head 3 into the human eye. The spring 4 plays a damping role to enhance the stability of injection.

[0023] like Figure 4 The figure is a schematic diagram of the shell structure of an intraocular lens pusher provided by the utility model. The shell 1 comprises a shell body 101, a buckle slot 104 is provided at the tail of the shell body 101, a shell handle 105 is provided in front of the buckle slot 104, an introduction head inlet 102 for obliquely inserting the introduction head 3 is provided at the top of the head of the shell body 101, an introduction head clamping slot 106 for fixing the introduction head 3 is provided at the front end of the introduction head inlet 102, and an introduction head outlet 103 is provided at the front end of the shell body 101.

[0024] like Figure 5 The figure is a schematic diagram of the push rod structure of an intraocular lens pusher provided by the utility model. The push rod 2 includes a push rod body 206, a push rod handle 201 is provided at the rear end of the push rod body 206, a guide groove 202 is provided in the middle, a main body matching column 203 is provided in front of the guide groove 202, a groove is provided between the guide groove 202 and the main body matching column 203, a buckle 204 is connected to the rear side of the main body matching column 203, and the buckle 204 is located in the groove. After the push rod 2 is assembled with the housing 1, the buckle 204 is engaged with the buckle groove 104 of the housing 1 to prevent The thrust rod 2 moves backward in the housing 1, and a slope is provided at the connection between the buckle 204 and the buckle groove 104. During push injection, the buckle 204 can be separated from the buckle groove 104 and move forward. After the push injection is completed, the push rod 2 moves backward, and the buckle 204 falls back into the buckle groove 104 and re-engages with the buckle groove 104. A push rod ejector pin 205 is provided at the front end of the push rod 2, and the spring 4 is sleeved on the push rod body 206 from one side of the push rod ejector pin 205. A spring limiter 207 is provided in front of the body matching column 203.

[0025] like Figure 6The figure shows a schematic diagram of the structure of an introduction head of an intraocular lens pusher provided by the utility model. The introduction head 3 is a foldable introduction head, in the shape of a knife handle, with two folded wings 303 at the knife head, which are fixed by a folding wing buckle 204, and the two folding wings 303 are connected to the lens implantation cavity 304, the front end of the lens implantation cavity 304 is an intraocular lens outlet 301, and the outside of the lens implantation cavity 304 is provided with an introduction head limit 302.

[0026] like Figure 7 The figure is a schematic diagram of the structure of a silicone head of an intraocular lens injector provided by the utility model. The silicone head 5 comprises a silicone head body 501, which is cylindrical, and has a push rod ejector hole 503 and a viscoelastic storage hole 504 on both sides of the inside, respectively. The push rod ejector hole 503 is used to insert the push rod ejector 205, and the outer wall of the silicone head body 501 on one side of the viscoelastic storage hole 504 is slightly extended outward to form a lens contact head 502.

[0027] The working principle of the utility model is:

[0028] Before use, insert the push rod 2 into the shell 1 from the rear end of the shell 1, and engage the buckle 204 of the push rod 2 with the buckle groove 104 of the shell 1. Then, put the spring 4 and the silicone head 5 on the push rod body 206 in sequence, and then insert the introduction head 3 obliquely into the shell body 101, and insert the folding wing 303 of the introduction head 3 into the introduction head groove 106 of the introduction head entrance 102 for fixing.

[0029] During the push injection process, the push rod 2 is acted upon by an external force, causing the buckle 204 to disengage from the buckle groove 104, and the push rod 2 moves forward to drive the spring 4 and the silicone head 5 to move forward, and the silicone head 5 contacts the intraocular lens in the intraocular implant cavity 304, pushing the intraocular lens out of the intraocular lens outlet 301 into the human eye. After the push injection is completed, the push rod 2 moves backward, and the buckle 204 falls back into the buckle groove 104 and re-engages with the buckle groove 104.

[0030] The utility model reduces the distance that the push rod 2 reaches the introduction head 3, so that the push rod 2 can accurately enter the introduction head 3, improves the success rate of the push rod 2 accurately reaching the introduction head 3, effectively reduces the occurrence of the phenomenon such as clip loop, introduction head 3 head explosion, artificial lens damage, etc., avoids the impact on the patient's personal safety, and reduces the workload of medical staff and the entire operation time.

[0031] This article uses specific examples to explain the concept of the utility model in detail, and the description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, any obvious modifications, equivalent substitutions or other improvements made without departing from the concept of the utility model should be included in the scope of protection of the utility model.

Claims

1. An intraocular lens pusher, characterized in that: It includes a shell, a push rod, an introduction head, a spring and a silicone head. The push rod is inserted into the shell from the rear end of the shell, the spring and the silicone head are installed in sequence at the front end of the push rod, the introduction head is installed at the front end of the shell, and an artificial lens is arranged in the introduction head. When installing, the introduction head is obliquely inserted into the shell from the introduction head entrance at the front end of the shell, and the folding wings of the introduction head are inserted into the introduction head slot at the introduction head entrance for fixing. When pushing, the push rod is forced to move forward and at the same time drives the spring and the silicone head to move forward, the silicone head contacts the artificial lens in the introduction head, and the artificial lens is pushed out from the introduction head into the human eye.

2. An intraocular lens injector according to claim 1, characterized in that: The shell includes a shell body, a snap groove is provided at the tail of the shell body, a shell handle is provided in front of the snap groove, an introduction head entrance for obliquely inserting the introduction head is provided at the top of the head of the shell body, an introduction head snap groove for fixing the introduction head is provided at the front end of the introduction head entrance, and an introduction head outlet is provided at the front end of the shell body.

3. An intraocular lens injector according to claim 2, characterized in that: The push rod includes a push rod body, a push rod handle is provided at the rear end of the push rod body, a guide groove is provided in the middle part, a main body matching column is provided in front of the guide groove, a groove is provided between the guide groove and the main body matching column, a buckle is connected to the rear side of the main body matching column, and the buckle is located at the groove. After the push rod is assembled with the shell, the buckle is engaged with the buckle groove of the shell to prevent the push rod from moving backward in the shell. A slope is provided at the engagement between the buckle and the buckle groove. During push injection, the buckle can be separated from the buckle groove and move forward. After the push injection is completed, the push rod moves backward, and the buckle falls back into the buckle groove and re-engages with the buckle groove. A push rod ejector is provided at the front end of the push rod, and the spring is sleeved on the push rod body from one side of the push rod ejector, and a spring limiter is provided in front of the main body matching column.

4. An intraocular lens injector according to claim 3, characterized in that: The introduction head is a foldable introduction head in the shape of a knife handle. The knife head is composed of two folded wings, which are fixed by a folding wing buckle. The two folding wings are connected to the lens implantation cavity. The front end of the lens implantation cavity is the artificial lens outlet. The outside of the lens implantation cavity is provided with an introduction head limiter.

5. An intraocular lens injector according to claim 4, characterized in that: The silicone head includes a silicone head body, which is cylindrical, and has a push rod ejector pin hole and a viscoelastic storage hole on both sides thereof. The push rod ejector pin hole is used to insert the push rod ejector pin, and the outer wall of the silicone head body on one side of the viscoelastic storage hole is slightly extended outward to form a crystal contact head.

Images