CN118121363A - Artificial crystal injector - Google Patents

Abstract

The invention provides an artificial lens injector, which can enable a push rod to always clamp an artificial lens at a specified clamping position, further reduce the injection operation difficulty of the artificial lens and optimize the injection process of the artificial lens. The intraocular lens injector comprises: a barrel body; an intraocular lens chamber in communication with the barrel and containing an intraocular lens; the push rod is arranged in the barrel body and can push along the length direction of the barrel body, and is used for pushing and injecting the artificial lens; and a pushing outlet communicated with the artificial crystal chamber for pushing out the artificial crystal. Particularly, the intraocular lens injector provided by the invention further comprises a top cover which is correspondingly arranged above the intraocular lens chamber and covers the intraocular lens chamber; the convex rib is arranged on one side surface of the top cover, corresponding to the artificial lens chamber, protrudes out of the surface of the top cover, and has the same length direction as the pushing direction of the push rod; the pushing groove is arranged on the surface of the push rod and is matched and embedded with the convex rib in a form corresponding to the convex rib.

Description

Artificial crystal injector

Technical Field

The invention relates to the technical field of artificial lenses, in particular to an artificial lens injector.

Background

Intraocular lenses (IOLs) are an artificial lens that is implanted in an eye to replace the natural crystalline lens when the eye of a person suffers from cataracts or other diseases to correct refractive errors of the eye. Because of the flexibility of the material and small size of the intraocular lens itself, it is difficult to directly perform surgical procedures on it, and thus it is desirable to implant it into the eye through a minimally invasive surgical port using an auxiliary medical instrument.

The traditional artificial lens implantation system consists of a push-injection head (commonly known as a fly head) and an implanter body. During the operation, the separately packaged intraocular lens is taken out of the package by a medical staff and put into an implanter for implantation. Since the loading process is entirely dependent on the skill of the healthcare worker for the procedure, there is a large uncertainty factor. If the medical staff performing the operation has low proficiency, the operation time can be prolonged greatly, and even the artificial lens cannot be implanted accurately.

In view of this, many intraocular lens injectors preloaded with intraocular lens have been proposed in the prior art, for example, chinese patent No. CN201910874600.3 discloses an intraocular lens injector for injecting an intraocular lens and an intraocular lens injecting method, in which an intraocular lens preloaded in an intraocular lens storage case is pushed and held by a push rod, the intraocular lens is pushed by the push rod in a state that the middle part is depressed, during the injection process, both sides of the intraocular lens are curled up, and the sufficiently curled intraocular lens is injected into the eye through an injection outlet, so that the operating time and difficulty of the intraocular lens injecting process can be reduced.

However, because the push operation is performed by the medical staff holding the rear end of the push rod in the process of pushing the intraocular lens, this puts forward a higher requirement on the operation stability of the medical staff, and the above-mentioned intraocular lens injector in the prior art is difficult to completely avoid the tiny rotation and offset of the push rod in the process of pushing, and the rotation and offset of the push rod may cause the front end of the push rod to change with the clamping position of the intraocular lens, which may cause the front end of the push rod to not accurately clamp the intraocular lens, or the intraocular lens is deflected along with the push rod in the process of pushing, so that the two sides of the intraocular lens cannot be curled upwards uniformly, thereby affecting the accuracy and reliability of pushing the intraocular lens.

Disclosure of Invention

In view of the above-mentioned problems of the prior art, the present invention provides an intraocular lens injector, which can enable a push rod to always inject along the same injection direction, not only can clamp an intraocular lens at a prescribed clamping position during clamping and injecting the intraocular lens, but also can keep the push rod stable and not rotate or deviate during injecting the intraocular lens, thereby improving the accuracy and reliability of intraocular lens injection.

The intraocular lens injector provided by the invention comprises: a barrel body; an intraocular lens chamber in communication with the barrel and containing an intraocular lens; the push rod is arranged in the barrel body, can push along the length direction of the barrel body and is used for pushing and injecting the artificial lens; and a pushing outlet communicated with the artificial lens chamber for pushing out the artificial lens.

Particularly, the intraocular lens injector provided by the invention further comprises a top cover which is correspondingly arranged above the intraocular lens chamber and covers the intraocular lens chamber; convex ribs which are arranged on the surface of one side of the top cover corresponding to the artificial lens chamber, protrude out of the surface of the top cover and have the same length direction as the pushing direction of the push rod; and the pushing injection groove is arranged on the surface of the push rod and is matched and embedded with the convex rib in a form corresponding to the convex rib.

According to the technical scheme provided by the invention, when the push rod is pushed, the push rod is pushed towards the push outlet along the push direction and enters the intraocular lens chamber, and as the push rod is pushed further, the convex rib is arranged on the surface of one side of the top cover corresponding to the intraocular lens chamber and protrudes out of the surface of the top cover, and the push rod is provided with the push groove matched and embedded with the convex rib on the surface of the push rod in a form corresponding to the convex rib, so that the convex rib is embedded into the push groove of the push rod, thereby limiting the push rod to move only in the push direction and not move in other directions such as the rotation of the push rod, the inclination of the front end of the push rod in the radial direction and the like. Therefore, the jogged structure of the convex rib and the pushing groove ensures that the pushing rod can only push along the pushing direction of the pushing rod and keeps the stability of the pushing direction without shifting when pushing the pushing rod through the artificial crystal cavity, thereby ensuring that the pushing rod can accurately clamp the specified position of the edge of the artificial crystal in the artificial crystal cavity, and can also continue to stably push along the same pushing direction after clamping the artificial crystal, without the condition of rotation or shifting of the pushing rod, and improving the accuracy and reliability of the pushing of the artificial crystal.

In an embodiment, the convex rib has a concave portion formed in a concave manner so that the height of the convex rib is reduced at a position of the convex rib corresponding to the optical structure in the center of the intraocular lens.

According to this preferred embodiment, the concave portion is formed at a position where the bead corresponds to the optical structure in the center of the intraocular lens, so that the beads at both ends of the concave portion can abut against both sides of the optical structure of the intraocular lens, and the intraocular lens is restrained in a state where the beads do not contact the optical structure of the intraocular lens. Thereby avoid the intraocular lens of pre-loading in intraocular lens injector to take place the displacement in the transportation, the concave part can also avoid the intraocular lens in the transportation simultaneously, protruding muscle butt in the surface of intraocular lens, extrudees the optical structure of intraocular lens, and leads to the intraocular lens to take place the risk of deformation or damage.

In a preferred embodiment, the concave portion has a pressing inclined surface disposed on an inner surface of the concave portion near one end of the injection outlet, and the pressing inclined surface is formed by gradually increasing the height of the protrusions of the ribs along the injection direction of the push rod.

According to this preferred embodiment, when the push rod pushes the intraocular lens for bolus injection, the intraocular lens is moved toward the bolus outlet along the bolus injection direction of the push rod. Because the pressing inclined surface is arranged and is formed on the inner surface of the concave part in a way that the height of the convex rib gradually rises along the pushing direction of the pushing rod, the height space vertical to the artificial lens gradually decreases along the pushing direction, so that the artificial lens can be pressed practically along with being pushed and pushed to the pushing outlet in a curled form with two sides upwards curled. Meanwhile, the middle position of the artificial crystal, namely the pressing inclined plane butt of the optical part and the convex rib, and the inclined end face can avoid deformation or damage caused by butt joint of the artificial crystal and other sharp structures.

In an embodiment, the protrusion has an inclined guide end, and the inclined guide end is formed by extending one end of the protrusion, which is close to the barrel, along a direction opposite to the pushing direction of the push rod in a manner that the height of the protrusion gradually decreases.

According to this preferred technical scheme, the protruding height of slope leading end reduces gradually to make protruding muscle and top cap surface can form comparatively smooth connection, when the push rod promotes along the direction of pushing the notes, the push rod's of front end push away the injection groove at first with protruding lower slope leading end gomphosis of height, and along with the promotion of push rod, with the protruding height along with increasing of the protruding muscle of push rod's gomphosis groove also, until with protruding muscle complete gomphosis, can make the gomphosis process of push rod's recess and protruding muscle smoother, the push rod's of being convenient for more push rod push away the injection groove and aim at gomphosis with protruding muscle.

As an optimal technical scheme, the intraocular lens injector provided by the invention further comprises a pressing block detachably arranged on the surface of one side of the top cover corresponding to the intraocular lens chamber, and the convex ribs are arranged on the surface of the pressing block.

According to the preferred technical scheme, because the pressing block is arranged in a mode of being detachable on the surface of one side of the top cover corresponding to the artificial crystal cavity, and the convex ribs are arranged on the surface of the pressing block, the pressing block can be independently manufactured, the manufacturing precision of the pressing block can be improved, and therefore the position and the height of the convex ribs can be accurately controlled. Meanwhile, the manufacturing parameters of the pressing block, such as the height or the width of the convex ribs, can be adjusted to adapt to artificial crystals with different thicknesses, the manufacturing parameters of other parts of the artificial crystal injector are not required to be adjusted, the precision is improved, and meanwhile, the manufacturing cost is reduced.

As an optimal technical scheme, in the intraocular lens injector provided by the invention, the surface of the pressing block is also provided with the sliding groove which is arranged along the injection direction of the pushing rod, so that the front end of the pushing rod can enter, and the convex rib is arranged in the sliding groove.

According to the preferred technical scheme, after the surface of the pressing block is pressed on the upper surface of the artificial crystal, the front end of the pushing rod is clamped on the side surface of the artificial crystal, so that the pressing block can block continuous pushing injection of the pushing rod, a chute for the front end of the pushing rod to enter is formed in the surface of the pressing block, the pressing block surface on two sides of the chute can be pressed on the surface of the artificial crystal, the pushing injection path of the pushing rod is not influenced by the pressing block, further, the convex rib is arranged in the chute, the pushing rod can enter the chute first and is pushed forward under the guiding of the chute, and the pushing injection groove of the pushing rod is matched and embedded with the pushing injection groove of the pushing rod in the process, so that the matching and embedding process of the pushing injection groove of the pushing rod and the convex rib is smoother and stable.

In the artificial crystal injector provided by the invention, the top cover is also provided with the pressing block groove, the pressing block groove penetrates through the top cover, the inner side wall of the pressing block groove is provided with the first pressing block clamping groove and the second pressing block clamping groove, and the convex rib is not contacted with the artificial crystal when the pressing block is embedded into the first pressing block clamping groove; when the pressing block is embedded into the second pressing block clamping groove, the convex rib is abutted with the artificial crystal.

According to the preferred technical scheme, when the intraocular lens injector is in a transportation or standing state, the pressing block is arranged on the top cover in a manner of being embedded into the first pressing block clamping groove, so that the surface of the convex rib is in a non-contact state with the surface of the intraocular lens, and the problem that the convex rib extrudes the intraocular lens to cause deformation or damage of the intraocular lens during transportation or standing can be prevented; and when pushing and injecting the intraocular lens, the top cover and the intraocular lens cavity cover the upper part of the intraocular lens cavity in a matched manner, the pressing block is pressed on one side surface of the top cover far away from the intraocular lens cavity, the pressing block is further pressed into the pressing block groove, the pressing block is arranged on the top cover in a manner of being embedded into the second pressing block clamping groove, at the moment, the convex ribs can be pressed on the middle part of the intraocular lens, the intraocular lens is promoted to achieve a middle concave in the pushing and injecting process, and the two sides of the intraocular lens are curled upwards.

Drawings

Fig. 1 is a schematic view of the entire construction of an intraocular lens injector according to a first embodiment of the present invention.

Fig. 2 is a schematic view showing the overall structure of an intraocular lens injector according to a first embodiment of the present invention.

Fig. 3 is an enlarged view of the structure of the intraocular lens chamber and the cap of the intraocular lens injector according to the first embodiment of the present invention.

Fig. 4 is a schematic structural view of a plunger of an intraocular lens injector according to a first embodiment of the present invention.

Fig. 5 is a schematic view showing the structure of a rib of an intraocular lens injector according to a second embodiment of the present invention.

Fig. 6 is a schematic view showing a fitting structure of a cap and a pressing block of an intraocular lens injector according to a third embodiment of the present invention.

Fig. 7 is a schematic view of an installation structure of a pressing block embedded in a first pressing block clamping groove in a third embodiment of the present invention.

Fig. 8 is a schematic view of an installation structure of a pressing block embedded in a second pressing block clamping groove in a third embodiment of the present invention.

Reference numerals: 100-an intraocular lens; 1-a barrel body; 2-an intraocular lens chamber; 21-fixing a bracket; 211-supporting rods; 212-limiting columns; 3-pushing rod; 31-a hand-held part; 32-the front end of the push rod; 321-clamping jaws; 4-a bolus outlet; 5-top cover; 51 a-mating surface of the cap; 51 b-the back of the top cover; 52-briquetting groove; 521-a first briquetting clamping groove; 522-a second briquetting clamping groove; 6-convex ribs; 61-inclined leading end; 62-recesses; 621-pressing the inclined surface; 7-pushing grooves; 8-briquetting; 81-sliding grooves; 82-briquetting pressing surface; 83-a first bump; 84-second protrusions.

Detailed Description

Some embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

First embodiment

Fig. 1 is a schematic view of the entire construction of an intraocular lens injector according to a first embodiment of the present invention. As shown in fig. 1, the present embodiment provides an intraocular lens injector, which includes a barrel 1, an intraocular lens chamber 2, a push rod 3 and an injection outlet 4, wherein the barrel 1, the intraocular lens chamber 2 and the injection outlet 4 are sequentially arranged and communicated in the longitudinal direction of the barrel 1, the push rod 3 is arranged in the barrel 1 in a manner of penetrating through the barrel 1, and the preloaded intraocular lens 100 in the intraocular lens chamber 2 can be pushed along the longitudinal direction (front-rear direction in the drawing) of the barrel 1. In particular, in the present embodiment, the intraocular lens injector further includes a top cover 5 provided correspondingly above the intraocular lens chamber 2, ribs 6 provided on the surface of the top cover 5, and injection grooves 7 provided on the surface of the push rod 3 and provided correspondingly to the ribs 6.

In the present embodiment, when the intraocular lens 100 is injected, the push rod 3 is pushed first in the injection direction inside the barrel 1, the front end 32 of the push rod passes through the barrel 1 into the intraocular lens chamber 2, and with further pushing of the push rod 3, since the rib 6 is provided on the side surface of the top cover 5 corresponding to the intraocular lens chamber 2, protruding from the top cover 5 surface, and the injection groove 7 is provided on the surface of the push rod 3 in a form corresponding to the rib 6, in which the rib 6 is fitted, the rib 6 on the surface of the top cover 5 is fitted into the injection groove 7 of the push rod 3, and the fitting structure of the rib 6 and the injection groove 7 can restrict the push rod 3 from being moved only in the injection direction, but not in other directions, such as circumferential rotation of the push rod 3, inclination of the push rod 3 in the radial direction, and the like. Therefore, due to the embedded structure of the convex rib 6 and the pushing groove 7, when pushing the pushing rod 3 through the intraocular lens chamber 2, the pushing rod 3 can only push along the pushing direction of the pushing rod 3 and keep the pushing direction stable without shifting, so that the pushing rod 3 can accurately clamp the specified position of the edge of the intraocular lens 100 in the intraocular lens chamber 2, and can continue to stably push along the same pushing direction after clamping the intraocular lens 100, the condition of pushing rod rotation or shifting cannot occur, and the accuracy and reliability of pushing the intraocular lens 100 are improved.

The structure and the fitting relation of the respective components of the intraocular lens injector in the present embodiment will be described below with reference to a specific example. Fig. 2 is a schematic view showing the overall structure of a preferred intraocular lens injector according to a first embodiment of the present invention. Fig. 3 is an enlarged view of the structure of the intraocular lens chamber and the cap of the intraocular lens injector according to the first embodiment of the present invention. Fig. 4 is a schematic structural view of a plunger of an intraocular lens injector according to a first embodiment of the present invention. It should be noted that the embodiment shown in fig. 2-4 is only a preferred embodiment of the present invention and is not intended to limit the specific configuration of the intraocular lens injector of the present invention.

[ Barrel body ]

As shown in fig. 2, the external shape of the barrel 1 is not limited, and fig. 2 illustrates a case where the external portion of the barrel 1 is formed in an approximately cylindrical shape, but a case where the barrel 1 is formed in another shape is also included in the scope of the present invention. The inside of the barrel 1 is provided with a push injection channel penetrating along the two ends of the length direction of the barrel 1, the push rod 3 is arranged in the push injection channel, in some preferred embodiments, at least part of the inner surface of the barrel 1 is matched with the outer surface of the push rod 3, and it should be noted that the matching in the embodiment does not refer to the fact that the inner diameters of the two ends of the barrel 1 are the same as the outer diameter of the push rod 3, but means that the inner surfaces of the two ends of the barrel 1 are mutually matched and nested, specifically, the inner surfaces of the two ends of the barrel 1 are the same as or similar to the outer surface of the push rod 3 in shape and size, and the barrel 1 is nested at the periphery of the push rod 3, so that a certain guiding and limiting effect can be achieved on the push injection direction of the push rod 3.

[ Intraocular lens Chamber ]

As shown in fig. 2, the intraocular lens chamber 2 may be a cavity with an opening at the upper side, the intraocular lens 100 is accommodated in the intraocular lens chamber 2, the front end of the pushing channel of the barrel 1 is communicated with the intraocular lens chamber 2, the front end 32 of the pushing rod can penetrate through the barrel 1 along the pushing direction into the intraocular lens chamber 2, in some preferred embodiments, the intraocular lens chamber 2 is also provided with a preservation structure matched with the intraocular lens 100, for example, a fixing bracket 21 or the like arranged below the intraocular lens 100 to fix the intraocular lens 100, so that the intraocular lens chamber 2 can be directly used as an intraocular lens preservation box, and the intraocular lens can be directly pushed by using an intraocular lens injector in operation without taking the intraocular lens 100 out of the intraocular lens preservation box, and the implantation time of the intraocular lens 100 can be saved.

[ Push rod ]

The push rod 3 is placed in the barrel 1 in a manner of passing through a pushing channel of the barrel 1, the front end 32 of the push rod is kept in the barrel 1 in advance, during pushing, the front end 32 of the push rod can be pushed forward along the pushing direction, the push rod passes through the front end of the barrel 1 and enters the intraocular lens chamber 2 to clamp the edge of the intraocular lens 100 in the intraocular lens chamber 2, and after clamping the intraocular lens 100, the intraocular lens 100 continues to be pushed out along the same pushing direction, wherein, as shown in fig. 4, the front end 32 of the push rod can be provided with a clamping structure matched with the edge of the intraocular lens 100, for example, the clamping structure can be an opposite claw 321 formed by concave middle part and convex up and down, and is used for clamping at a preset position of the edge of the intraocular lens 100 pre-installed in the intraocular lens chamber 2 (for example, the edge corresponding to the center of the intraocular lens 100), so that the intraocular lens 100 is pushed out towards the pushing outlet 4 by the push rod 3, a preferable structure of the push rod 3 is also shown in fig. 4, and the rear end of the push rod 3 can be provided with a holding part 31 with a ring-shaped bulge for holding part 31 for holding by a medical staff.

[ Bolus outlet ]

The injection outlet 4 is disposed in communication with the front end of the intraocular lens chamber 2, the injection outlet 4 may be any outlet structure capable of allowing the curled intraocular lens 100 to pass through, and here, without limitation, fig. 2 shows a preferred structure of the injection outlet 4, and by way of example in fig. 2, the inner surface of the injection outlet 4 is enclosed to form a conical chamber, wherein the front end of the conical chamber is formed as an outlet end with a small cross-sectional area, the rear end of the conical chamber is communicated with the intraocular lens chamber 2 and is formed as an inlet end with a larger cross-sectional area, the inner surface of the conical chamber is disposed in an inclined manner with a tapered inner surface of the conical chamber, the intraocular lens 100 contacts the inclined inner surface of the injection outlet 4 at both sides during injection, and the tapered inner surface of the conical chamber is curled, and the completely curled intraocular lens 100 can be implanted into the eye from the outlet end, thereby being capable of assisting in promoting the curling of the intraocular lens 100 in a smaller volume, and being implanted into the eye through a smaller wound.

[ Top cover ]

As shown in fig. 3, the top cover 5 is disposed in a manner of covering the intraocular lens chamber 2, and it should be noted that "covering" in this embodiment means that the shape and size of a side surface of the top cover 5 corresponding to the intraocular lens chamber 2 is not smaller than the opening cross section of the intraocular lens chamber 2, so that the surface of the top cover 5 can completely cover the opening of the intraocular lens chamber 2 to realize sealing of the intraocular lens chamber 2, and further, the connection manner of the top cover 5 and the intraocular lens chamber 2 is not limited, for example, the top cover 5 may be disposed independently of the intraocular lens chamber 2, and the opening and closing of the intraocular lens chamber 2 can be realized by manually taking the top cover 5 for installation; the top cover 5 can also be hinged with the side edge of the opening of the intraocular lens chamber 2 through one side edge, and the opening and closing of the intraocular lens chamber 2 can be realized through turning over the top cover 5; or the opening of the intraocular lens chamber 2 can be further provided with a sliding groove along which the top cover 5 can slide in a translational manner so as to realize the opening and closing of the intraocular lens chamber 2, which belongs to the protection scope of the present invention. The intraocular lens chamber 2 is controlled to be opened and closed by the top cover 5, so that the top cover 5 is opened in advance to place the intraocular lens 100, and then the top cover 5 is closed to seal the intraocular lens chamber 2, and the built-in intraocular lens 100 is protected during transportation.

[ Convex rib ]

As shown in fig. 3, the ribs 6 are provided on a side surface of the top cover 5 corresponding to the opening of the intraocular lens chamber 2 in such a manner as to protrude from the surface of the top cover 5, and since the top cover 5 shown in fig. 3 is turned over by side to be matched and closed with the opening above the intraocular lens chamber 2, in a state in which the top cover 5 is horizontally opened, the surface on the same side as the intraocular lens chamber 2 is a side surface corresponding to the intraocular lens chamber 2, which surface serves as a mating surface 51a of the top cover when the top cover 5 is matched and closed with the intraocular lens chamber 2. Therefore, in the present embodiment, the bead 6 is provided so as to protrude from the mating surface 51a of the cap in the direction of the intraocular lens 100, and the longitudinal direction of the bead 6 is the same as the pushing direction of the push rod 3 (front-rear direction in the drawing), and the protruding height of the bead 6 is the length of a vertical line segment from a point on the mating surface 51a of the cap to the edge of the bead 6. It should be noted that the length L of the rib 6 in the length direction is not limited, and a person skilled in the art can freely select different lengths L of the rib 6 according to the requirement, for example, the length L of the rib 6 may be equal to the length of the top cover 5, or the length L of the rib 6 may be smaller than the height of the rib 6, which falls within the protection scope of the present invention.

[ Push grooves ]

As shown in fig. 4, the injection groove 7 is formed on the surface of the push rod 3 and is disposed corresponding to the rib 6 on the top cover 5, where "disposed correspondingly" means that the injection groove 7 and the rib 6 are disposed in line along the injection direction, that is, the rib 6 is disposed on an extension line of the injection groove 7 of the push rod 3 along the injection direction, and it is not particularly specified that the two have the same length or position overlapping. Specifically, the pushing groove 7 is a strip-shaped groove formed by the surface of the push rod 3 corresponding to the top cover 5 along the pushing direction of the push rod 3 in a concave manner, and the width of the pushing groove 7 is not smaller than the width of the convex rib 6, so that the pushing groove 7 can be matched and embedded with the convex rib 6 in the pushing process of the push rod 3. Wherein the length of the bolus recess 7 (length in the bolus direction of the plunger 3) may be the entire or a part of the length of the plunger 3 and not less than the elongated length of the plunger 3 that bolus the intraocular lens 100 out of the bolus outlet 4.

[ Bolus procedure ]

Fig. 2 to 4 show, by way of example, the case where the upper opening of the intraocular lens chamber 2 is opened, the rib 6 is at the center of the mating surface 51a of the top cover, the upper surface of the pushing groove 7 is correspondingly provided with the pushing groove 7, and the pushing process of the intraocular lens injector according to the present embodiment is described with reference to fig. 2 to 4, firstly, the top cover 5 is turned over so that the mating surface 51a of the top cover covers the opening above the intraocular lens chamber 2, the rib 6 of the mating surface 51a of the top cover is above the intraocular lens 100, when the user holds the hand-held portion 31 at the rear end of the push rod 3 to push, the front end 32 of the push rod extends out of the barrel 1 from the pushing channel of the barrel 1 in the pushing direction, and enters the intraocular lens chamber 2, with further pushing of the push rod 3, since the rib 6 is disposed on the extension line of the push groove 7 along the push direction, the rib 6 is embedded into the push groove 7 of the push rod 3, the embedded structure of the rib 6 and the push groove 7 enables the push rod 3 and the rib 6 to slide along the length direction (i.e., the push direction) of the rib 6, and the claw 321 at the front end 32 of the push rod can accurately clamp at the fixed position of the edge of the intraocular lens 100, so as to push the intraocular lens 100 to continue to enter the push outlet 4 along the same push direction, and both sides of the intraocular lens 100 are curled upwards along the inclined surface of the push outlet 4, so that the intraocular lens 100 curled upwards at both sides is finally implanted into the eye from the outlet end of the push outlet 4.

In this embodiment, compared with the prior art, the intraocular lens injector according to this embodiment is provided with the rib 6 on the mating surface 51a of the top cover, the injection groove 7 is provided on the surface of the pushing rod 3, and the rib 6 and the injection groove 7 are provided correspondingly, so that when the pushing rod 3 injects the intraocular lens, the injection groove 7 can be engaged with the rib 6 along the injection direction, and the pushing rod 3 is limited to move only in the direction except for the injection direction, but not in other directions, such as rotation of the pushing rod 3, inclination of the front end 32 of the pushing rod in the radial direction, and the like. Therefore, the embedded structure of the ribs 6 and the pushing grooves 7 ensures that the front end 32 of the pushing rod can only always push along the pushing direction of the pushing rod and keep the pushing direction stable and not cheap when pushing and injecting the pushing rod through the artificial crystal chamber 2, thereby ensuring that the front end 32 of the pushing rod 3 can accurately clamp the prescribed position of the edge of the artificial crystal 100 in the artificial crystal chamber 2, and can continuously push and inject the pushing rod along the same pushing direction after clamping the artificial crystal 100, without the condition that the pushing rod 3 rotates or deviates, and improving the pushing accuracy and reliability of the artificial crystal 100.

Second embodiment

A second embodiment of the present invention is to exemplify the intraocular lens injector of the first embodiment in more detail.

Fig. 5 is a schematic view showing the structure of a rib of an intraocular lens injector according to a second embodiment of the present invention. As shown in fig. 5, the rib of the intraocular lens injector in the present embodiment has an inclined leading end 61 and a concave portion 62.

Wherein, the inclined guiding end 61 is formed by extending the rear end of the rib 6 backward (opposite direction to the pushing direction of the push rod 3) at one end (rear end in the drawing) of the rib 6 near the barrel 1, specifically, the inclined guiding end 61 is formed by gradually decreasing the protrusion height H of the rib 6, so that the matching surface 51a of the rear end of the rib 6 and the top cover can be formed to be smoothly connected, when the push rod 3 is pushed along the pushing direction, the pushing groove 7 of the front end 32 of the push rod is first engaged with the inclined guiding end 61 with the protrusion height H being lower, and as the push rod 3 is pushed, the protrusion height H of the rib 6 engaged with the pushing groove 7 is also increased until the pushing groove 7 is completely engaged with the rib 6, the inclined guiding end 61 can make the engaging process of the pushing groove 7 and the rib 6 smoother, and the difficulty of aligning and engaging the pushing groove 7 of the push rod 3 and the rib 6 is reduced.

The concave portions 62 are formed at positions where the ribs 6 correspond to the optical structure in the center of the intraocular lens 100, so that the ribs 6 at both ends of the concave portions 62 can abut against both sides of the optical structure of the intraocular lens 100, and limit the intraocular lens 100 without contacting the optical structure of the intraocular lens 100. In order to avoid displacement of the intraocular lens 100 pre-loaded in the intraocular lens injector during transportation, in general, taking the case where the length of the bead 6 is equal to the length of the cap 5 as an example, the concave portion 62 may be concavely formed in the middle position of the bead 6 in such a manner that the projection height H of the bead 6 is reduced, the length and the concave height of the concave portion 62 are not limited, in some preferred embodiments, the length of the concave portion 62 may be matched with the diameter of the optical structure of the intraocular lens 100, and the concave height of the concave portion 62 is set in such a manner that the concave portion 62 of the bead 6 is not in contact with or just in contact with the upper surface of the intraocular lens 100 when the cap 5 is closed, so that the concave portion 62 can avoid deformation or damage of the intraocular lens 100 due to extrusion of the bead 6 during transportation of the optical structure of the intraocular lens 100.

Further, the specific concave shape of the concave portion 62 is not limited, and for example, may be formed as an arc-shaped concave corresponding to the arc shape of the upper surface of the optical structure of the intraocular lens 100, or may be formed as a rectangular concave having both ends at right angles, and a preferred concave 62 structure is shown in fig. 4 by way of example, wherein, in particular, the front end of the concave portion 62 is formed as an inclined surface as the pressing inclined surface 621 upon pushing of the intraocular lens 100, formed by the inner surface of the concave portion 62 in such a manner that the convex height H of the bead 6 gradually increases in the pushing direction of the intraocular lens 3, when the intraocular lens 100 is pushed by the push rod 3, the intraocular lens 100 moves forward by the concave portion 62 in accordance with the pushing of the push rod 3, and is formed in such a manner that the convex height of the bead 6 gradually increases in the pushing direction of the inner surface of the concave portion 62, so that the height space perpendicular to the intraocular lens 100 gradually decreases in the pushing direction, whereby the front end of the intraocular lens 100 can be pressed with being pushed, the intraocular lens 100 is prevented from being floated upward by the pushing, and the intraocular lens 100 is prevented from being curled up in the final state, and the intraocular lens 100 is ensured to be curled in the state of being folded up in the pushing state, and the rolled state in the pushing state 4 is further ensured. Meanwhile, the optical portion, which is the middle position of the intraocular lens 100, abuts against the pressing slope 621, and the inclined end face can avoid deformation or damage caused by abutment of the intraocular lens 100 with the sharp structure.

In the present embodiment, first, by providing the inclined guide end 61 at the end of the bead 6 near the barrel 1, the push groove 7 of the push rod 3 can be more smoothly fitted with the bead 6 during the push. Then, through the design to the refinement structure of protruding muscle 6, can restrict the removal of intraocular lens 100 in intraocular lens cavity 2 through protruding muscle 6, avoided protruding muscle 6 simultaneously to cause the extrusion to the optical structure of intraocular lens 100, reduce the intraocular lens injector and push away the deformation risk that the extrusion of intraocular lens 100 led to in the transportation to and set up at the front end of concave part 62 and press inclined plane 621, reduce the intraocular lens 100 front end perk come-up's in the injection process risk, make intraocular lens 100 can push away injection outlet 4 with the crimp state that both sides upwards curl.

Third embodiment

A third embodiment of the present invention is a more detailed example of the artificial crystal injector of the first embodiment or the second embodiment.

Fig. 6 is a schematic view showing the fitting structure of the cap 5 and the pressing block 8 of the intraocular lens injector according to the third embodiment of the present invention. As shown in fig. 6, the intraocular lens injector according to the present embodiment further includes a pressing block 8 detachably provided on a side surface (mating surface 51a of the top cover) of the top cover 5 corresponding to the intraocular lens chamber 2, and the bead 6 is provided on a side surface of the pressing block 8 corresponding to the intraocular lens chamber 2, as compared to the first embodiment or the second embodiment.

The mounting manner of the press block 8 and the top cover 5 is not limited, for example, the press block 8 can be directly adsorbed on the mating surface 51a of the top cover through magnetic attraction, and also can be fixed in the press block groove 52 formed in the top cover 5 through a bulge, and a person skilled in the art can freely select the mounting manner of the press block 8 and the top cover 5 according to requirements, which is not beyond the protection scope of the invention. Fig. 6 shows, by way of example, that the through-hole pressing groove 52 is provided in the position of the top cover 5 corresponding to the intraocular lens 100, the pressing groove 52 is provided so as to penetrate through the mating surface 51a of the top cover and the back surface 51b of the top cover, the pressing block 8 is provided in the pressing groove 52 of the top cover 5, the surface of the pressing block 8 has a protrusion corresponding to the pressing groove 52, the pressing groove 52 has a pressing block groove, during installation, the pressing block 8 is only pressed into the pressing groove 52, and the protrusion on the surface of the pressing block 8 is embedded into the pressing block groove in the pressing block groove 52, so that the installation of the pressing block 8 and the top cover 5 can be realized, and the installation is convenient and quick.

Preferably, a plurality of press block clamping grooves may be disposed on the inner side wall of the press block groove 52, and correspondingly, one or more protrusions matched with the press block clamping grooves may be disposed on the press block side surface, so that the positional relationship between the press block 8 and the convex rib and the intraocular lens 100 is controlled according to different application scenarios, specifically, as shown in fig. 6, a first press block clamping groove 521 and a second press block clamping groove 522 with different heights are disposed on two opposite inner walls of the press block groove 52, a first protrusion 83 and a second protrusion 84 are disposed on opposite surfaces of the press block 8, wherein, due to the angle problem, the press block clamping grooves and protrusions on the same side of the press block 8 and the press block groove 52 are not illustrated in fig. 6, however, it will be understood by those skilled in the art that, the corresponding first press block clamping groove 521 and the corresponding second press block clamping groove 522 are also disposed on the opposite inner walls of the press block groove 52, which are not illustrated, and the corresponding first protrusion 83 and the corresponding protrusion 84 on the opposite side of the press block 8 and the second protrusion 84 are also disposed on the opposite side of the first protrusion 83 and the second protrusion 83 illustrated in fig. 6. Thus, the press block 8 may be installed in the press block groove 52 in such a manner that the second protrusion 84 is fitted into the first press block groove 521, or in such a manner that the first protrusion 83 is fitted into the first press block groove 521, and the second protrusion 84 is fitted into the second press block groove 522.

Fig. 7 is a schematic view of an installation structure in which the pressing block 8 is fitted into the first pressing block clamping groove 521 in the present embodiment; fig. 8 is a schematic view of an installation structure in which the pressing block 8 is fitted into the second pressing block clamping groove 522 in the present embodiment. As seen in fig. 7 and 8, when the second protrusions 84 of the press block 8 are inserted into the first press block catching grooves 521, the beads 6 are not in contact with the intraocular lens 100; when the first protrusion 83 of the press block 8 is fitted into the first press block groove 521 and the second protrusion 84 is fitted into the second press block groove 522, the bead 6 abuts against the intraocular lens 100.

The term "abutting" refers to that two objects are disposed in such a manner that a force exists on a contact interface, and specifically, in this embodiment, "abutting" refers to that the bead 6 is disposed in such a manner as to contact with the upper surface of the intraocular lens 100 and apply downward pressure to the upper surface of the intraocular lens 100, so that when the bead 6 abuts against the upper surface of the intraocular lens 100, the middle portion of the intraocular lens 100 is subjected to downward pressure applied by the bead 6 to undergo concave deformation, and the intraocular lens 100 is promoted to form a curled state in which the middle portion is concave and both sides are curled upward at the time of bolus injection.

It should be noted that, in fig. 6 to 8, the case where the first protrusion 83 and the second protrusion 84 are provided on the side surface of the press block 8 is illustrated, but the present invention is not limited thereto, for example, when only the second protrusion 84 is provided on the side surface of the press block 8, the bead 6 is not in contact with the intraocular lens 100 or just in contact with the intraocular lens 100 in a manner of exerting no pressure when the second protrusion 84 of the press block 8 is inserted into the first press block groove 521, and the bead 6 is in contact with the intraocular lens 100 when the second protrusion 84 of the press block 8 is inserted into the second press block groove 522, which is also within the scope of the present invention.

Specifically, the fixing bracket 21 may have a supporting rod 211 correspondingly disposed below supporting tabs on both sides of the intraocular lens 100 and a limiting post 212 passing through the supporting rod 211 from the lower direction of the intraocular lens chamber 2 and protruding from the supporting rod 211, when the intraocular lens 100 is in a transported or standing state, the supporting tabs on both sides of the intraocular lens 100 are placed on the supporting rod 211 of the fixing bracket 21 to keep the optical structure in the middle of the intraocular lens 100 suspended, the limiting post 212 passes through the supporting rod 211 and is disposed on one side of the supporting tab of the intraocular lens 100 near the optical structure to limit the movement of the supporting tab of the intraocular lens 100 on the supporting rod 211, so that the optical structure of the intraocular lens 100 can always maintain a stably suspended state in the transported or standing state by supporting and limiting the supporting tab of the intraocular lens 100, and the optical structure of the intraocular lens 100 is prevented from being extruded or rubbed by the inner wall of the intraocular lens chamber 2 to affect the optical precision.

When the intraocular lens 100 is in a transportation or standing state, the press block 8 is mounted on the top cover 5 in a manner that the second protrusions 84 are embedded into the first press block clamping grooves 521, so that the surface of the protruding ribs 6 and the surface of the intraocular lens 100 are in a non-contact state, or in some embodiments, the surface of the protruding ribs 6 can be in a state just contacted with the surface of the intraocular lens 100 but not pressed, the intraocular lens 100 can be prevented from being deformed or damaged due to the fact that the protruding ribs 6 press the intraocular lens 100 during transportation or standing, and because the limiting columns of the fixing support 21 penetrate through the supporting rods 211 upwards from the lower side of the intraocular lens chamber 2 and the press block 8 protrudes downwards from the upper side of the intraocular lens chamber 2 to the matching surface of the top cover 5, the upper ends of the supporting rods 211 and the lower surface of the press block 8 are opposite up and down in the intraocular lens chamber 2, so that the press block 8 cannot be further pressed into the second press block clamping grooves 522, and the fact that the intraocular lens 100 can be kept in a non-contact state during transportation or standing of the intraocular lens 100 is further ensured, and the optical structure of the press block 8 is prevented from being accidentally pressed by the impact or the like, which presses the intraocular lens 100 due to the external force.

When the intraocular lens 100 is injected, firstly, the body of the intraocular lens injector needs to be lifted upwards, the intraocular lens chamber 2 moves upwards along with the body of the intraocular lens injector, and the limiting column 212 penetrating upwards from the lower side of the intraocular lens chamber 2 is not fixedly connected with the intraocular lens chamber 2, so that the limiting column 212 keeps still and finally falls out of the intraocular lens chamber 2 along with the rising of the intraocular lens chamber 2, then, the supporting rod 211 is pulled out from the side surface of the intraocular lens chamber 2, namely, the pressing block 8 can be pressed by the back surface 51b of the top cover, the pressing block 8 is further pressed into the pressing block groove 52, the pressing block 8 is enabled to be embedded into the top cover 5 in the mode that the first protrusion 83 is embedded into the first pressing block clamping groove 521, and the second protrusion 84 is embedded into the second pressing block clamping groove 522, and at the moment, the protruding rib 6 can be pressed on the intraocular lens 100, and the two-side upwards curled state of the intraocular lens 100 is promoted.

Preferably, the surface of the pressing block 8 corresponding to the intraocular lens chamber 2 (the surface of the same side of the matching surface 51a of the pressing block 8 and the top cover) is also provided with a sliding groove 81 opened along the pushing direction of the pushing rod 3, the front end 32 of the pushing rod is provided for entering, and the convex rib 6 is arranged in the sliding groove 81. When the pressing block 8 presses the upper surface of the intraocular lens 100, the front end 32 of the pushing rod is clamped on the side surface of the intraocular lens 100 to perform pushing injection, so that the pressing block 8 possibly blocks the pushing injection of the pushing rod 3, the sliding groove 81 is formed in the pressing block 8, the pushing injection path of the pushing rod 3 can be kept from being influenced by the pressing block 8 when the pressing block pressing surfaces 82 on two sides of the sliding groove 81 press the intraocular lens 100, further, the convex rib 6 is arranged in the sliding groove 81, the front end 32 of the pushing rod can firstly enter the sliding groove 81 and is pushed forward under the guiding of the sliding groove 81 to be correspondingly embedded with the convex rib 6, and accordingly the matching embedding process of the pushing injection groove 7 of the pushing rod 3 and the convex rib 6 is smoother and stable.

In addition, in the present embodiment, the pressing block 8 is provided corresponding to the fitting surface 51a of the cap so that the pressing block 8 and the bead 6 can be simultaneously abutted against the surface of the intraocular lens 100, assisting in pressing the intermediate position of the intraocular lens 100 to promote the intraocular lens 100 to achieve a curled state with both sides curled upward, further preferably, the pressing block 8 is formed corresponding to one side surface of the intraocular lens chamber 2 as a slightly inclined pressing block surface 82, the height H of the pressing block pressing surface 82 raised gradually in the direction of pushing by the pushing rod 3 with respect to the surface of the cap 5, whereby the intraocular lens 100 is subjected to a larger downward pressing force during the pushing by the intraocular lens 100 and is slightly inclined downward along the pressing block pressing surface 82, suppressing the upward floating of the front end of the intraocular lens 100 during the pushing by the pressing block pressing surface 82, so that the intraocular lens 100 can be stably pushed out of the pushing outlet 4 in a curled state with both sides curled upward. The pressing surface 82 of the pressing block 8 and the pressing inclined surface 621 of the concave portion 62 of the bead 6 may be present at the same time, and may be provided with one of them alone, thereby suppressing the floating of the tip of the intraocular lens 100.

In this embodiment, through addding briquetting 8 to the fixed knot structure's between briquetting 8 and the top cap 5 design, make briquetting 8 can be before the bolus with intraocular lens 100 interval set up, can not cause the extrusion to intraocular lens 100, can also press briquetting 8 by the back 51b of top cap simultaneously when the bolus, make briquetting pressing surface 82 and protruding muscle 6 of briquetting 8 can with intraocular lens 100 surface butt, restrain intraocular lens 100 in the front end come-up of bolus in-process, promote intraocular lens 100 to reach the crimping state that both sides upwards curled. In addition, a sliding groove 81 is formed in the surface of the pressing block 8 corresponding to the intraocular lens chamber 2, and the convex rib 6 is arranged in the sliding groove 81, so that smoothness of the pushing route of the pushing rod 3 can be ensured, and the pushing rod 3 can be guided to a position where the pushing groove 7 of the pushing rod 3 is matched and embedded with the convex rib 6 more conveniently.

Thus far, the technical solution of the present invention has been described in connection with the accompanying drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims (7)

1. An intraocular lens injector comprising:

A barrel body;

An intraocular lens chamber in communication with the barrel and containing an intraocular lens;

the push rod is arranged in the barrel body and can push along the length direction of the barrel body and is used for pushing and injecting the artificial lens;

a pushing outlet communicated with the artificial lens chamber for pushing out the artificial lens,

It is characterized in that the utility model also comprises,

A top cover correspondingly arranged above the artificial lens chamber and covering the artificial lens chamber,

A convex rib arranged on one side surface of the top cover corresponding to the artificial lens chamber, protruding out of the surface of the top cover, and having the same length direction as the pushing direction of the push rod,

The pushing groove is arranged on the surface of the push rod and is matched and embedded with the convex rib in a mode corresponding to the convex rib.

2. The intraocular lens injector of claim 1, wherein the bead has a recess formed in a manner such that the height of the projection of the bead is reduced at a position where the bead corresponds to the optical structure in the center of the intraocular lens.

3. The intraocular lens injector according to claim 2, wherein the concave portion has a pressing slope provided on an inner surface of the concave portion near an end of the injection outlet, formed by the inner surface of the concave portion in such a manner that the projection height of the bead gradually increases in the injection direction of the plunger.

4. The intraocular lens injector of claim 1, wherein said ridge has an inclined leading end, and is formed by extending an end of said ridge adjacent said barrel in a direction opposite to the injection direction of said pushrod in such a manner that the height of the projection of said ridge gradually decreases.

5. The intraocular lens injector of claim 1, further comprising,

A pressing block detachably arranged on one side surface of the top cover corresponding to the artificial lens chamber,

The convex ribs are arranged on the surface of the pressing block.

6. The intraocular lens injector of claim 5 wherein,

The surface of the pressing block is also provided with a sliding groove which is formed along the pushing injection direction of the push rod and is used for the front end of the push rod to enter, and the convex rib is arranged in the sliding groove.

7. The intraocular lens injector of claim 5, wherein the top cover is further provided with a pressing block groove, the inner side wall of the pressing block groove is provided with a first pressing block clamping groove and a second pressing block clamping groove,

When the pressing block is embedded into the first pressing block clamping groove, the convex rib is not contacted with the artificial crystal; when the pressing block is embedded into the second pressing block clamping groove, the convex rib is abutted with the artificial crystal.