Intraocular lens capsular bag

Abstract

An intraocular lens capsule bag comprises: a capsule bag body, which is a flexible and foldable bag body with a capsule bag opening; a capsule bag support and fixing structure, which comprises a first memory alloy body and a second memory alloy body; the first memory alloy body and the second memory alloy body penetrate the capsule bag body; when the intraocular lens capsule bag is implanted, the first memory alloy body and the second memory alloy body surround an annular structure, and the annular structure is located in the capsule bag body to expand the capsule bag body, so that the capsule bag body can load an intraocular lens; when the intraocular lens capsule bag is in a push injection state, the first memory alloy body and the second memory alloy body are straightened into a linear structure, and the capsule bag body is wound on the linear structure. The intraocular lens capsule bag is used for implanting intraocular lenses.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an artificial lens capsule bag. Background Art

[0002] The lens is composed of the lens capsule, lens epithelium, lens fibers and suspensory ligaments. The lens capsule and the suspensory ligaments connecting the lens together with the iris form the lens-iris septum system, which separates the eyeball into anterior and posterior segments. The anterior and posterior segment structures play an important role in the anatomy and physiology of the eyeball.

[0003] Ophthalmic lens diseases, clinically including: Marfan syndrome, traumatic lens subluxation and dislocation, surgically induced lens capsule rupture and zonules injury, etc.

[0004] These ophthalmic lens diseases can cause defects or even loss of the lens capsule and suspensory ligament. Once the capsule is defective, it is easy to cause problems such as the inability to fix the intraocular lens during surgery or the displacement of the intraocular lens after surgery. The loss of the capsule will make it impossible to implant an intraocular lens that uses the traditional lens capsular fixation method. Summary of the invention

[0005] The problem solved by the present invention is to provide an artificial lens capsule bag to solve the problem that the artificial lens cannot be implanted due to the capsule loss.

[0006] To solve the above problems, the present invention provides an artificial lens capsule bag, comprising: a capsule bag main body, which is a flexible and foldable bag body with a capsule bag opening; a capsule bag supporting and fixing structure, which comprises a first memory alloy body and a second memory alloy body; the first memory alloy body and the second memory alloy body penetrate the capsule bag main body; when the artificial lens capsule bag is in an implanted state, the first memory alloy body and the second memory alloy body form an annular structure, and the annular structure is located in the capsule bag main body to be used for expanding and expanding the capsule bag main body, so that the capsule bag main body can load an artificial lens; when the artificial lens capsule bag is in a push injection state, the first memory alloy body and the second memory alloy body are straightened into a linear structure, and the capsule bag main body is wound on the linear structure.

[0007] Optionally, the oblate spherical pouch body as a whole is an oblate spherical bag body having the pouch opening.

[0008] Optionally, the bladder support fixing structure also includes a first fixed wing and a second fixed wing, the first fixed wing is connected to the first end of the first memory alloy body and the second memory alloy body, and the second fixed wing is connected to the second end of the first memory alloy body and the second memory alloy body.

[0009] Optionally, the intraocular lens capsule bag further includes a first fixing rod and a second fixing rod, wherein the first fixing rod is used to fix the first fixing wing to the eye, and the second fixing rod is used to fix the second fixing wing to the eye.

[0010] Optionally, the first fixed wing has a first through hole, the length of the first fixed rod is greater than the length of the first through hole, the first fixed rod passes through the first through hole and both ends protrude from the first through hole; the two ends of the first fixed rod are used to be fixed on the scleral surface or between the scleral layers of the eye; the second fixed wing has a second through hole, the length of the second fixed rod is greater than the length of the second through hole, the second fixed rod passes through the second through hole and both ends protrude from the second through hole; the two ends of the second fixed rod are used to be fixed on the scleral surface or between the scleral layers of the eye.

[0011] Optionally, the second fixed wing is further connected to a guide tail rod; or, the second fixed wing is further connected to a guide tail pipe.

[0012] Optionally, the length of the first fixing wing and the second fixing wing is half the length of the first fixing rod and the second fixing rod.

[0013] Optionally, the first fixed wing, the second fixed wing, the first fixed rod, the second fixed rod and the guide tail rod are made of PMMA.

[0014] Optionally, the first memory alloy body and the second memory alloy body are made of titanium memory alloy.

[0015] Optionally, the material of the pouch body is acrylic.

[0016] The advantages of the intraocular lens capsule bag of the present invention include:

[0017] 1. It can be used for implantation of artificial lenses to solve the problem of inability to implant artificial lenses due to capsule loss;

[0018] 2. Its structure allows it to be used to hold various types of intraocular lenses. Since the intraocular lens capsule (capsule body) has a regular structure, the capsule body is an oblate spherical structure with a capsule opening, and the capsule body is flexible, it can ensure the correct position of the intraocular lens after surgery;

[0019] 3. Due to its structural characteristics, it has different states, which leads to its unique implantation method, so that minimally invasive implantation can be achieved. Only two small incisions (for example, 3 mm) are needed on the scleral surface, which causes little damage. At the same time, it avoids sutures and is easy to use.

[0020] To solve the above problems, the present invention also provides an intraocular lens capsular bag pusher, comprising: a pusher head, the pusher head comprising a first hollow tube body, the pipe inside the first hollow tube body is the first pipe; a pusher grip, the pusher grip comprising a second hollow tube body, the pipe inside the second hollow tube body is the second pipe; a pusher handle, the pusher handle comprising a handle rod and a pusher core connected together; the pusher head is connected to the pusher grip, the rear end of the first hollow tube body is connected to the front end of the second hollow tube body, and the second pipe is connected to the first pipe; the handle rod is located in the second pipe, and the handle rod can slide in the second pipe; the pusher core is located in the second pipe, and the pusher core can move in the second pipe and the first pipe.

[0021] Optionally, the push injection core is a solid rod body, or the push injection core is an open tube body, or the push injection core is a semi-solid rod body with a tube opening at the end.

[0022] Optionally, the syringe head also includes a guide groove, which is connected to the rear end of the first hollow tube body; when the syringe head is connected to the syringe grip, the guide groove is inserted into the second pipe.

[0023] Optionally, the guide groove is a groove body with a semi-circular tubular structure.

[0024] Optionally, the side of the guide groove has a pair of connecting wings; the tube wall of the second hollow tube body has a connecting groove opened inward from the end surface; when the syringe head and the syringe grip are connected, the connecting wings are inserted into the connecting groove.

[0025] Optionally, the inner diameter of the second pipe is equal to the outer diameter of the first hollow tube body, and when the syringe head and the syringe grip are connected, the end surface of the second hollow tube body and the connecting wing form a circular step surface.

[0026] Optionally, the syringe grip further includes a pair of gripping wings, and the gripping wings are symmetrically located on the outer side wall of the second hollow tube body.

[0027] Optionally, the injector handle further comprises a tail plate, wherein the tail plate is connected to the rear end surface of the handle rod.

[0028] The advantages of the intraocular lens capsule injector of the present invention include:

[0029] 1. The split design can be used to place the implanted intraocular lens capsule bag, making it easy to implant the corresponding intraocular lens capsule bag;

[0030] 2. It can be used to implant the corresponding artificial lens capsule through a small incision (such as 3mm). The small incision only needs to be able to pass the head of the injector, with small wound and low risk;

[0031] 3. The components are compact in structure, easy to use and low in production cost.

[0032] To solve the above problems, the present invention also provides an intraocular lens capsule push injection assembly, comprising the intraocular lens capsule push injector as described above, and also comprising a guide, wherein the guide comprises a gripping portion and a guide tube, and the guide tube is connected to the lower side of the gripping portion. The intraocular lens capsule push injection assembly further facilitates the implantation process of the intraocular lens capsule. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of an intraocular lens capsule provided by an embodiment of the present invention in an implanted state;

[0034] Figure 2 yes Figure 1 The illustrated schematic diagram of the intraocular lens capsular bag omitting the main body of the capsular bag;

[0035] Figure 3 yes Figure 1 A schematic diagram of the intraocular lens bag in a first transition state is shown;

[0036] Figure 4 yes Figure 3 The illustrated schematic diagram of the intraocular lens capsular bag omitting the main body of the capsular bag;

[0037] Figure 5 yes Figure 1 A schematic diagram of the intraocular lens bag in the second transition state is shown;

[0038] Figure 6 yes Figure 1 Schematic diagram of the intraocular lens bag in the push injection state;

[0039] Figure 7 yes Figure 1 A schematic side view of the capsular bag body of the intraocular lens capsular bag shown;

[0040] Figure 8 yes Figure 1 An enlarged schematic diagram of the first fixation wing in the intraocular lens capsular bag is shown;

[0041] Fig. 9 is the first fixed rod and Figure 8 A schematic diagram of the first fixed wing after being matched is shown;

[0042] Fig.10 is a schematic diagram of the injector head of the intraocular lens capsular bag injector provided in an embodiment of the present invention;

[0043] Fig.11 It is a schematic diagram of the intraocular lens capsular bag injector provided by an embodiment of the present invention, in which the injector grip and the injector handle are connected together;

[0044] Fig.12 is a schematic diagram of an injector handle of an intraocular lens capsular bag injector provided in an embodiment of the present invention;

[0045] Fig.13 yes Fig.11 The enlarged schematic diagram of the front end structure of the push syringe grip is shown;

[0046] Fig.14 is a schematic diagram of an assembled intraocular lens capsule injector provided by an embodiment of the present invention;

[0047] Fig.15 It is a schematic diagram of the guide in the intraocular lens capsular injection device assembly;

[0048] Fig.16 This is a schematic diagram of the intermediate state of the intraocular lens capsular bag injector and the intraocular lens capsular bag during the intraocular lens capsular bag implantation process. DETAILED DESCRIPTION

[0049] The current clinical solution for defects or loss of the lens capsule and suspensory ligament is to use artificial lens suture suspension. The disadvantages of this method include:

[0050] (1) Not all IOL designs can be sutured;

[0051] (2) Suture suspension of intraocular lens: Due to the artificial fixation of sutures, it is difficult to achieve a complete balance of tension on each intraocular lens loop. Therefore, the intraocular lens often shifts during or after surgery, affecting the patient's postoperative vision.

[0052] (3) When suture fixation is used, suture degradation may occur in the long term (some literature indicates more than 10 years), resulting in displacement or posterior dislocation of the intraocular lens, necessitating another surgery.

[0053] For partial defect of lens capsule or partial rupture of zonules, other current clinical solutions are to implant capsular tension rings, which have the following disadvantages:

[0054] (1) This method cannot be used for patients with complete loss of the capsular bag;

[0055] (2) Implantation of the capsular tension ring still requires fixation by the natural lens zonules, but patients with Marfan syndrome, whose own zonules are underdeveloped, still face the risk of artificial lens displacement in the long term.

[0056] (3) If a modified sutureable capsular tension ring is used for implantation, the intraocular lens may be easily displaced after surgery due to the imbalance of suture force, thus affecting the patient's visual quality. Furthermore, if suture fixation is used, there is a risk of long-term suture degradation causing displacement of the intraocular lens-tension ring complex.

[0057] The inventors analyzed that if there is a defect or loss of the lens capsule and zonules, consider implanting an artificial lens capsular bag. However, there are currently no reports of artificial lens capsular bag products in clinical practice.

[0058] The inventor of the present invention proposes an artificial lens capsule bag, which can be implanted through a scleral incision (e.g., 3 mm) without sutures. The artificial lens capsule bag implantation process can be matched with a dedicated pusher, so the present invention also provides a pusher dedicated to implanting an artificial lens capsule bag.

[0059] For a clearer representation, the present invention is described in detail below with reference to the accompanying drawings.

[0060] The embodiment of the present invention provides an artificial lens capsule bag, please refer to Figures 1 to 9 .

[0061] like Figure 1 The intraocular lens capsule provided in this embodiment includes a capsule body 110 and a capsule support and fixing structure (not marked as a whole).

[0062] The pouch body 110 is a flexible and foldable pouch body having a pouch opening 111 .

[0063] The pouch support and fixing structure includes a first memory alloy body 121 and a second memory alloy body 122. The first memory alloy body 121 and the second memory alloy body 122 penetrate the pouch body 110. Figure 1 and Figure 3 Both show that the first memory alloy body 121 and the second memory alloy body 122 penetrate the pouch body 110 .

[0064] Figure 1 The structure of the intraocular lens capsule bag in the implanted state is shown, and the capsule bag body 110 is in a naturally unfolded state, and can be used for implanting a corresponding intraocular lens.

[0065] The first memory alloy body 121 and the second memory alloy body 122 located inside the pouch body 110 form a ring structure (the ring structure is not separately marked, refer to Figure 2 Corresponding content), the annular structure is located in the capsule bag body 110 to be used for expanding the capsule bag body 110, so that the capsule bag body 110 can be loaded with an intraocular lens.

[0066] in, Figure 2 yes Figure 1In the figure, the structure behind the capsule body 110 is omitted, that is, the separate structure of the capsule support and fixation structure, and is the structural form of the capsule support and fixation structure in the implanted state (or when it is initially manufactured). Figure 2 It can be seen that the first memory alloy body 121 and the second memory alloy body 122 surround an annular structure. The diameter of the annular structure is about 10 mm, and the annular structure plays a role in supporting the pouch body 110. Figure 2 It can also be seen that in addition to forming a ring structure in the middle, the first memory alloy body 121 and the second memory alloy body 122 still have a straight rod structure (not marked) at both ends of the first memory alloy body 121, and the second memory alloy body 122 still have a straight rod structure (not marked) at both ends. These straight rod structures can be set shorter, for example 1-2mm.

[0067] The existence of the straight rod structure makes it easier for the first memory alloy body 121 and the second memory alloy body 122 to cooperate with the pouch body 110, and for the first memory alloy body 121 and the second memory alloy body 122 to cooperate with the fixed wing described later. However, in other embodiments, the straight rod structure may not be required.

[0068] The first memory alloy body 121 and the second memory alloy body 122 are made of memory metal alloy materials. When the external force is removed, the state is as follows. Figure 2 Status shown.

[0069] Figure 6 It is shown that, in the push injection state, the first memory alloy body 121 and the second memory alloy body 122 of the intraocular lens capsule are straightened into a linear structure, and the capsule body 110 is wound on the linear structure.

[0070] Figure 1 It is both the shape (state) of the implanted state and the shape of the artificial lens capsule bag when it is first made. Therefore, the artificial lens capsule bag is made. In order to realize the subsequent implantation process, the artificial lens capsule bag needs to be removed from the implanted state. Figure 1 The shape shown is adjusted to Figure 6 The form shown, therefore, requires reference Figures 1 to 6 The corresponding process.

[0071] in, Figure 3 and Figure 5The first transition state and the second transition state of the intraocular lens capsule are shown. As mentioned above, this is because the intraocular lens capsule provided in this embodiment includes two states, one is the expanded state after implantation, that is, the implantation state; the other is the push injection state (at this time, the first memory alloy body 121 and the second memory alloy body 122 are straightened, and the capsule body 110 is folded and wound on the first memory alloy body 121 and the second memory alloy body 122 in an umbrella shape). In order to switch between the two states, a corresponding intermediate transition state is also required. Figure 3 In the first transition state, that is, before the implantation state, the first memory alloy body 121 and the second memory alloy body 122 are straightened, but the pouch body 110 is not folded, and therefore, the pouch body 110 is not wound around the first memory alloy body 121 and the second memory alloy body 122 . Figure 5 In the second transition state, which is also before the implantation state, the capsule body 110 is only a schematic diagram of being folded in half, and the capsule body 110 is also not wound around the first memory alloy body 121 and the second memory alloy body 122. In addition, Figure 4 for Figure 3 In the first transition state shown, the structure after the pouch body 110 is removed, at this time, the first memory alloy body 121 and the second memory alloy body 122 are in a linear structure.

[0072] Please refer to Figure 7 , showing the side view structure of the pouch body 110, the pouch body 110 is an oblate spherical bag body with a pouch opening 111, and from the side, it is a two-sided oblate spherical structure, one of the two faces corresponds to Figure 1 The front side is shown in FIG (its center has a capsule opening 111 with a diameter of about 5.5 mm, and the capsule opening 111 serves as an implantation hole for the intraocular lens), and the other side is the back side, that is, Figure 1 The inner bottom back side corresponds to the inner side of the middle bag opening 111. It can be seen that in the bag body 110, the side of the bag opening 111 is the front side of the bag, and the side without holes is the back side of the bag.

[0073] In this embodiment, the pouch body 110 is a foldable pouch body, specifically a flexible foldable pouch body. The pouch body 110 may be made of acrylic to ensure corresponding flexibility. The pouch body 110 may be made of hydrophilic acrylic or hydrophobic acrylic.

[0074] In other embodiments, the capsule body 110 may also be made of other polymer materials as long as it can be implanted into the eye, is transparent, and is stable and non-volatile.

[0075] Please refer to Figures 1 to 6In this embodiment, the bag support fixing structure also includes a first fixing wing 123 and a second fixing wing 124. The first fixing wing 123 is connected to the first end (not marked) of the first memory alloy body 121 and the second memory alloy body 122, and the second fixing wing 124 is connected to the second end (not marked) of the first memory alloy body 121 and the second memory alloy body 122. Moreover, each fixing wing is connected to the end of the straight rod structure of each memory alloy body (when there is no straight rod structure, Figure 1 and Figure 2 The fixed wing is directly connected to the annular structure).

[0076] In this embodiment, Figure 8 The enlarged structure of the first fixing wing 123 is shown, and the hollow pipe of the first fixing wing 123 is the first through hole 1230. In other words, the first fixing wing 123 has the first through hole 1230.

[0077] like Fig. 9 , Fig. 9 and Figure 8 Association further shows that the intraocular lens capsule of this embodiment also includes a first fixing rod 140 and a second fixing rod (the second fixing rod is not shown, and the first fixing rod 140 can be referred to). The first fixing rod 140 is used to fix the first fixing wing 123 to the eye, and the second fixing rod is used to fix the second fixing wing 124 to the eye.

[0078] In this embodiment, the length of the first fixing rod 140 is greater than the length of the first through hole. The first fixing rod 140 passes through the first through hole and both ends protrude from the first through hole. Both ends of the first fixing rod 140 are used to be fixed on the scleral surface or between scleral layers of the eye.

[0079] It should be noted that, although not shown in the figure, in this embodiment, the second fixing wing 124 also has a second through hole, the second fixing rod also has a length greater than the length of the second through hole, the second fixing rod passes through the second through hole and both ends protrude from the second through hole; the two ends of the second fixing rod are used to be fixed on the scleral surface or between the scleral layers of the eye. In other words, the first fixing wing 123 can be in the shape of a hollow cylinder, and the second fixing wing 124 can also be in the shape of a hollow cylinder.

[0080] As can be seen from the above, the shapes of the two fixed wings in this embodiment can be the same. For example, the fixed wings can be a cylindrical hollow cylinder with a circular hollow tube with a diameter of 1 mm.

[0081] As can be seen from the above, in this embodiment, the first fixing rod 140 and the second fixing rod can both be cylindrical rods with conical shapes on both sides. Fig. 9The first fixing rod 140 shown in the figure may have a diameter of 0.9 mm and a length (total length) of 4 mm. The fixing rod is designed as a conical cylindrical rod to facilitate the fixing of the hollow channel passing through the center of the fixing wing to the scleral surface or between the scleral layers. Fig. 9 The first fixing rod 140 passes through the first through hole 1230 of the first fixing wing 123 (as shown in FIG. Figure 8 ), and the two ends of the first fixing rod 140 are used to be fixed on the corresponding positions on the eye (correspondingly, the two ends of the second fixing rod are also used to be fixed on the corresponding positions on the eye). At this time, the fixing rod can be fixed on the corresponding part of the eye like a nail, so that the entire artificial lens capsule bag can be seamlessly fixed on the eye, avoiding sutures, thereby achieving seamless fixation.

[0082] In other embodiments, the cone tip of the fixing rod may be set to be relatively rounded (not Fig. 9 (the spike shape in the middle).

[0083] In this embodiment, further, the length of the first fixing wing 123 and the second fixing wing 124 may be half of the length of the first fixing rod 140 and the second fixing rod.

[0084] In other embodiments, the length of the first fixed wing 123 and the second fixed wing 124 can be 2 mm, the cylindrical outer diameter of the first fixed wing 123 and the second fixed wing 124 can be 2 mm, and the inner diameter can be 1 mm (it should be noted that the proportions in the drawings here are slightly different from the listed data. This also shows that in other embodiments, these dimensions can be adjusted).

[0085] In this embodiment, the side of the first fixed wing 123 is connected to the first end of the first memory alloy body 121 and the second memory alloy body 122 , and the side of the second fixed wing 124 is connected to the second end of the first memory alloy body 121 and the second memory alloy body 122 .

[0086] It should be noted that in other embodiments, the combination of the fixed wing and the fixed rod (small rod) may also be Fig. 9 Other shapes, such as cylindrical, obtuse square, and more preferably, an ergonomic shape that conforms to the outer ring shape of the eyeball, a shape similar to the Australian boomerang.

[0087] It should be noted that in other embodiments, the shapes of the first fixed wing and the second fixed wing can be deformed accordingly. For example, the two fixed wings can be in the shape of an arrow with a folded back (in this case, the corresponding fixed rod is not required), or the fixed wings can be in the shape of an elastic pop-up device (in this case, the corresponding fixed rod is not required), the fixed wings can be in the shape of an expandable sphere (in this case, the corresponding fixed rod is not required), and the fixed wings can be in the shape of a hollow spiral fixing cap, such as a square, hexagonal, or a threaded button (in this case, the corresponding fixed rod is not required). In summary, the connection method of the fixed wing and the fixed rod can be integrally formed, can be folded back for fixing, or can be fixed with an expanded end, etc., wherein the fixed rod can be omitted.

[0088] Please refer to Figures 1 to 6 In this embodiment, the second fixed wing 124 is also connected to a guide tail rod 125 .

[0089] It should be noted that, in other embodiments, the second fixed wing may also be connected to a guide tail pipe. The design of the guide tail rod and the guide tail pipe is related to the push core of the subsequent pusher, please refer to the subsequent content of this specification.

[0090] In this embodiment, the opposite side of the second fixed wing 124 is connected to the guide tail rod 125. The diameter of the guide tail rod 125 may be 1 mm, and the length may be 2-20 mm.

[0091] In this embodiment, the material of the first fixed wing 123, the second fixed wing 124, the first fixed rod 140, the second fixed rod and the guide tail rod 125 can be PMMA. That is, in this embodiment, the fixed wings on both sides and the guide tail rod 125 are selected from PMMA material, and correspondingly, the fixed rod is made of PMMA material. PMMA material has been used in medical devices for a long time.

[0092] This embodiment is an artificial lens capsule made by using the principle of memory alloy. Memory alloy usually refers to shape memory alloys (SMA).

[0093] This embodiment uses memory alloy materials and other materials to produce Figure 1 The intraocular lens capsule shown, after which the entire capsule support and fixing structure can be straightened first, and then the flexible capsule body 110 can be rolled up on the folded capsule support and fixing structure;

[0094] Since the capsule body 110 itself is made of a polymer film, it has a certain film adhesion effect, especially the acrylic film, which can keep the entire intraocular lens capsule intact after being wound on the capsule support and fixing structure. Figure 6 or, in other cases, to ensure that the pouch body 110 remains Figure 6The state shown is not loose, and a small amount of viscoelastic agent can be used to stick the capsule bag body 110, and the viscoelastic agent can be sucked out of the eye during subsequent surgery;

[0095] After that, after the intraocular lens capsule is delivered to the corresponding position of the eye, the capsule support fixing structure can be slowly and naturally unfolded by bypassing the corresponding capsule body 110 due to the "memory" function of the first memory alloy body 121 and the second memory alloy body 122. This process can be assisted by a certain external force to slowly restore the intraocular lens capsule to its original position. Figure 1 The shape shown in FIG. 1 is a step-by-step process, and the middle part of the bag support and fixing structure can be retracted into the bag body 110. Figure 1 In the state shown, the pouch body 110 is unfolded, and the first memory alloy body 121 and the second memory alloy body 122 located inside the pouch body 110 are restored to an annular structure (eg Figure 2 As shown), the annular structure enables the capsule bag body 110 to maintain an expanded state, so that the capsule bag body 110 can be used for subsequent implantation of various existing artificial lenses.

[0096] In this embodiment, the material of the first memory alloy body 121 and the second memory alloy body 122 may specifically be titanium memory alloy, that is, they may be titanium alloy memory material.

[0097] It should be noted that, on the basic structure in which the first memory alloy body 121 and the second memory alloy body 122 penetrate the pouch body 110, when the first memory alloy body 121 and the second memory alloy body 122 are pulled into a straight line shape, the planes where these two straight lines are located are parallel to the pouch opening 111, that is, the first memory alloy body 121 and the second memory alloy body 122 penetrate the pouch body 110 along a direction parallel to the plane where the pouch opening 111 is located.

[0098] It should be noted that the ring body (annular structure) surrounded by the first memory alloy body 121 and the second memory alloy body 122 has corresponding through holes (not shown) passing through the part of the capsule body 110, but these through holes are holes of fixed size, that is, the holes through which the first memory alloy body 121 and the second memory alloy body 122 pass when passing through the capsule body 110. The relative positions of the through holes and the first memory alloy body 121 and the second memory alloy body 122 are not fixed, so as to ensure that the first memory alloy body 121 and the second memory alloy body 122 can move back and forth for a distance from these through holes, so that the first memory alloy body 121 and the second memory alloy body 122 can undergo structural changes to achieve different states. For example, in the implanted state, the turning part of the first memory alloy body 121 and the second memory alloy body 122 (the turning part is the connection position of the aforementioned straight rod structure and the annular structure) is just located in the through hole, so as to locate the position of the capsule body 110 after the annular structure is restored, so that the capsule body 110 is in the correct position. Correspondingly, when the first memory alloy body 121 and the second memory alloy body 122 are stretched into a straight line state, more of them are exposed outside the through hole.

[0099] The artificial lens capsule bag provided in the embodiment of the present invention can be used to replace the natural lens capsule bag to restore the anatomical structure of the lens-iris septum and solve the problem of being unable to implant an artificial lens due to capsule loss.

[0100] The intraocular lens capsule provided in the embodiment of the present invention can be used to load various types of intraocular lenses, and can assist in implanting all types of posterior chamber intraocular lenses currently designed. In addition, the intraocular lens capsule provided in the embodiment of the present invention can ensure the correct position of the intraocular lens after surgery because the intraocular lens capsule (capsule bag body 110) itself has a regular structure, the capsule bag body 110 is a regular open oblate spherical structure, and the capsule bag body 110 is flexible.

[0101] The artificial lens capsule provided in the embodiment of the present invention has different states due to its structural characteristics, which leads to a unique implantation method (please continue to refer to the subsequent content of the specification), thereby achieving minimally invasive surgery, requiring only two small incisions (for example, 3 mm) on the scleral surface, causing little damage; at the same time, it avoids sutures and is easy to use.

[0102] The various materials used in the embodiments of the present invention are compatible with the human body, have no rejection, and are highly safe. The corresponding production materials are all existing mature materials that have been used clinically for a long time and can be used for life without replacement.

[0103] The embodiment of the present invention also provides an intraocular lens capsule injector.

[0104] Please refer to Figures 10 to 14, the intraocular lens capsular bag injector includes:

[0105] The head of the syringe (not marked), such as Fig.10 , the injector head includes a first hollow tube body 211, and the pipe inside the first hollow tube body 211 is a first pipe (not marked);

[0106] The handle of the syringe (not marked) Fig.11 , the syringe grip includes a second hollow tube body 221, and the pipe inside the second hollow tube body 221 is a second pipe (not marked);

[0107] Injector handle (not marked), such as Fig.11 and Fig.12 The handle of the pusher includes a handle rod 231 and a pusher core 232 connected together;

[0108] The syringe head is connected to the syringe grip, such as Fig.14 , the rear end of the first hollow tube body 211 is connected to the front end of the second hollow tube body 221, and the second pipeline is connected to the first pipeline;

[0109] The handle rod 231 is located in the second pipe, and the handle rod 231 can slide in the second pipe;

[0110] The push core 232 is located in the second pipe, and the push core 232 can move in the second pipe and the first pipe.

[0111] Fig.14 Shown is a schematic diagram of the intraocular lens capsular bag injector after it is assembled together. It can be seen that the injector head is located at the front end, the injector grip is located in the middle, the injector handle is located at the rear end, and a part of the injector handle extends into the injector grip (the front and back of this embodiment, with the position close to the human eye during surgery as the front, and the position away from the human eye during surgery as the back).

[0112] Fig.12 It is further shown that the handle rod 231 and the push core 232 are usually connected front to back, and the push core 232 extends forward along the front end surface of the handle rod 231.

[0113] In this embodiment, the injection core 232 is an open tube body. Accordingly, at this time, the second fixed wing 124 of the aforementioned embodiment is connected to the guide tail rod 125, so that the injection core 232 can cooperate with the guide tail rod 125. By inserting the guide tail rod 125 into the injection core 232 (open tube body), the artificial lens capsular bag injector can be better utilized to inject the artificial lens capsular bag.

[0114] In other embodiments, the pusher core may also be a solid rod, or a semi-solid rod with a nozzle at the end. Specifically, when the second fixed wing of the aforementioned embodiment is connected to a guide tail pipe, the pusher core may be a solid rod; when the second fixed wing of the aforementioned embodiment is connected to a guide tail rod, the pusher core may also be a semi-solid rod with a nozzle.

[0115] Please refer back to Fig.10 The pusher head also includes a guide groove 212, and the guide groove 212 is connected to the rear end of the first hollow tube 211. When the pusher head is connected to the pusher grip, the guide groove 212 is inserted into the second pipeline.

[0116] Please refer back to Fig.10 In this embodiment, the side of the guide groove 212 is provided with a pair of connecting wings 213. The wall of the second hollow tube 221 has a connecting groove 223 opened from the end surface inward (refer to Fig.13 When the injector head and the injector grip are connected, the connecting wing 213 is inserted into the connecting groove 223 .

[0117] It should be noted that, in this embodiment, the guide groove 212 is a groove body, but the connecting groove 223 is a groove space.

[0118] Fig.13 Shows Fig.11 In the structure shown, the front end structure of the second hollow tube 221 is enlarged.

[0119] It should be noted that Fig.13 In this embodiment, the connecting groove 223 does not pass through the entire wall of the second hollow tube body 221 . However, in other embodiments of the present invention, the connecting groove may pass through the wall of the second hollow tube body from inside to outside.

[0120] In this embodiment, the inner diameter of the second pipe is equal to the outer diameter of the first hollow tube 211 (obviously, the outer diameter of the second hollow tube 221 is larger than the outer diameter of the first hollow tube 211), and when the syringe head and the syringe grip are connected, the end face (front end face) of the second hollow tube 221 and the connecting wing 213 form a circular step surface. The circular step surface can prevent the syringe grip from entering the corresponding surgical wound.

[0121] It should be noted that by making full use of the above-mentioned annular step surface, the pusher head and the pusher grip can be prevented from being separated during use. Specifically, because the annular step surface is formed by the connection wing 213 inserted into the connection groove 223, if glue is applied to the annular step surface, or a fixing ring is put on (the fixing ring can be hung on the gripping wing 222 described below through other structures), the connection wing 213 can be better prevented from being separated from the connection groove 223 during use, that is, the pusher head and the pusher grip can be prevented from being separated. When the pusher head and the pusher grip need to be separated, the corresponding anti-separation effect can be released by removing the glue or the fixing ring.

[0122] In this embodiment, the syringe grip further includes a pair of gripping wings 222 , and the gripping wings 222 are symmetrically disposed on the outer side wall of the second hollow tube 221 .

[0123] In this embodiment, the pusher handle further includes a tail plate 233, which is connected to the rear end surface of the handle rod 231. The tail plate 233 increases the area of ​​the rear portion of the pusher handle, making the pusher more comfortable to use.

[0124] In this embodiment, the head of the injector may specifically include a first hollow tube body 211 (hollow cylinder, the interior of which is the first pipe) with a diameter of 2 mm, and the length of the first hollow tube body 211 may be 20 mm. The first pipe may also be called a guide pipe.

[0125] In this embodiment, the first hollow tube body 211 is connected to the guide groove 212 , and the groove body of the guide groove 212 may be connected to the first hollow tube body 211 and formed integrally.

[0126] In this embodiment, the guide groove 212 is a groove body of a semi-circular tube structure. That is, the guide groove 212 can be a semi-circular tube structure (semi-hollow cylinder) with the side bottom facing upwards, such as Fig.10 As shown in FIG. 2 , the guide groove 212 can be used to place an intraocular lens capsule (refer to the corresponding content of the above embodiment). Fig.10 Only the guide tail rod 125 of the intraocular lens bag is shown, and the other parts of the intraocular lens bag have been placed in the first channel of the first hollow tube 211 in an implanted state.

[0127] The length of the guide groove 212 can be 20 mm, which can be approximately equal to the length of the first memory alloy body 121 and the second memory alloy body 122 of the intraocular lens bag when they are in a straight line, or slightly less than the length of the first memory alloy body 121 and the second memory alloy body 122 when they are in a straight line. The radius of the guide groove 212 can be 1 mm (i.e., the diameter is also 2 mm).

[0128] The length of the first pipe, that is, the length of the first hollow tube 211, can be equal to the length of the first memory alloy body 121 and the second memory alloy body 122 when they are in a straight line, or slightly greater than the length of the first memory alloy body 121 and the second memory alloy body 122 when they are in a straight line.

[0129] In this embodiment, the guide groove 212 is symmetrically connected to a pair of connecting wings 213 on both sides. The connecting wings 213 can be a rectangular structure with a length of 15 mm, a width of 10 mm, and a thickness of 2 mm (it should be noted that the corresponding size ratio is not shown in the figure).

[0130] The material of each structural part of the intraocular lens capsular bag injector provided in this embodiment can be selected as a medical PVC material that is resistant to high temperature and high pressure.

[0131] The intraocular lens capsular bag injector provided in the embodiment of the present invention adopts a split design, which can place the intraocular lens capsular bag in an implanted state to achieve the corresponding intraocular lens capsular bag implantation.

[0132] The intraocular lens capsular bag injector provided in the embodiment of the present invention has a split design, and the injector head can be designed to be smaller. Therefore, it can be used to implant the corresponding intraocular lens capsular bag through a small incision (such as 3mm). The small incision only needs to be able to pass the injector head, with small wound and low risk.

[0133] The intraocular lens capsular bag injector provided in the embodiment of the present invention has a compact structure of various parts, is easy to use and has low manufacturing cost.

[0134] The overall structure of the intraocular lens capsular bag injector provided in the embodiment of the present invention can be made of PVC material, which is mature, can be sterilized at high temperature and high pressure, and is easy to produce.

[0135] The intraocular lens capsular bag injector provided in the embodiment of the present invention can also have an injection power structure (injector handle) formed in one piece, so that the implantation is smooth and the pushing is convenient.

[0136] The intraocular lens capsular bag pusher provided in the embodiment of the present invention is designed with a hollow pusher tube (the pusher grip and the pusher head are connected, and the pusher head can completely accommodate the guide tail rod 125 on the intraocular lens capsular bag body, or the guide tail rod 125 can be exposed in the guide groove 212 first), which is stable and convenient when pushed later.

[0137] The intraocular lens capsular bag injector provided in an embodiment of the present invention has an integrated injector head, that is, a first hollow tube 211 and a guide groove 212 (receptor groove) with an integrated structure. The main body length of the injector head can be greater than 15 mm (that is, the length of the first hollow tube 211 is greater than 15 mm), which is convenient for overall penetration of the eyeball.

[0138] The embodiment of the present invention also provides an intraocular lens capsule injection assembly.

[0139] Please refer to Fig.15 The push injection assembly includes the intraocular lens capsule pusher provided in the aforementioned embodiment, and also includes a guide (not marked).

[0140] The guide comprises a gripping portion 311 and a guide tube 312, wherein the guide tube 312 is connected below the side of the gripping portion 311. The tube opening of the guide tube 312 is a bevel tube opening, which helps to realize the function of the guide.

[0141] The guide gripping portion 311 may be a rectangular parallelepiped structure, and its length may be 5 mm, width may be 5 mm, and height may be 10 mm. One side of the gripping portion 311 near the bottom surface has a hollow cylindrical structure with an inclined surface, namely, the guide tube 312. The diameter of the guide tube 312 may be 2.5 mm, so that the head of the syringe with a diameter of 2 mm (refer to the corresponding content of the above embodiment) can be inserted. The appearance of the guide tube 312 may be 3 mm, and its length may be 10 mm.

[0142] The material of each structural part of the introducer provided in this embodiment can also be selected as a medical PVC material that is resistant to high temperature and high pressure.

[0143] In summary, the intraocular lens capsular bag injection assembly provided in this embodiment has not only an intraocular lens capsular bag injector, but also a guide, and the guide can make the actual surgical operation simpler and more convenient. Please refer to the subsequent content of this manual.

[0144] In summary, the present invention provides an intraocular lens capsule bag and an intraocular lens capsule bag pusher, and also provides an intraocular lens capsule bag pusher assembly comprising an intraocular lens capsule bag pusher and a guide.

[0145] Please refer to Figures 1 to 16 The intraocular lens capsule injection assembly of the present invention (including an intraocular lens capsule injection device and a guide) is used to implant the intraocular lens capsule of the present invention. The process can be as follows:

[0146] Make an incision on the conjunctiva at the 10:00 and 4:00 positions of the cornea to create a 3mm×4mm rectangular scleral flap with a thickness of about 1 / 2-1 / 3mm:

[0147] A 3-mm scleral puncture knife was used to make a clear corneal auxiliary incision, and viscoelastic was injected into the anterior chamber to support the anterior chamber with viscoelastic;

[0148] Use a 3mm scleral puncture knife to puncture the sclera parallel to the iris under the scleral flap or 1-2mm behind the limbus of the scleral surface to form two corresponding 3mm long scleral implant ports;

[0149] Remove the intraocular lens capsule (after removal, it is in the form of a push injection, such as Figure 6 As shown), the intraocular lens capsule is placed in the guide groove 212 of the intraocular lens capsule pusher, and the intraocular lens capsule is pushed into the first hollow tube 211 along the guide groove 212, and only the guide tail rod 125 at the rear end can be left, as shown in FIG. Fig.10 As shown;

[0150] The hollow injection tube (i.e., injection core 232) of the injection handle is aligned with the guide tail rod 125 and inserted, the injection head is connected to the injection grip and the injection handle, and the connection wing 213 of the injection head is inserted into the connection groove 223 of the injection grip and fixed to form an injection state, such as Fig.14 ;

[0151] Hold the intraocular lens capsule injection device in your right hand with the front side facing up, insert the head of the injection device through the 10:00 position scleral implantation port, and insert the guide of the intraocular lens capsule injection assembly (such as Fig.15 ), guide the head of the pusher through the scleral implantation port at 4:00 position in the pupil area of ​​the eye, and gently push the handle of the pusher to push the first fixing wing 123 of the intraocular lens capsule out of the head of the pusher. Fig.16 shown (eyes not shown), Fig.16 It is also shown that a portion of the first memory alloy body 121, the second memory alloy body 122 and the pouch body 110 have also been pushed out of the injector head;

[0152] Can be Fig.16 In the state shown (or in the previous period of time, that is, in the state when only the first fixing wing 123 is pushed out), the left hand holds the micro toothless forceps to clamp the first fixing rod 140 and pass it through the first through hole 1230 of the first fixing wing 123 (refer to the corresponding content above), and the first fixing wing 123 is located at the midpoint of the first fixing rod 140, and the first fixing rod 140 and the first fixing wing 123 are located outside the sclera surface together;

[0153] Then, push the handle of the injector while retracting the entire injector to implant the intraocular lens bag into the eye;

[0154] The head of the pusher is withdrawn from the scleral implantation port at the 10:00 position, leaving the second fixing wing 124 and the guide tail rod 125 outside the sclera. At this time, the second fixing rod (not shown) can be clamped by the left hand with a micro toothless forceps to pass through the second through hole (hollow tube) of the second fixing wing 124, and the second fixing wing 124 is located at the midpoint of the second fixing rod. The second fixing rod and the second fixing wing 124 are located together outside another position of the scleral surface;

[0155] The folded capsule bag body 110 is opened with a microscopic intraocular forceps from the auxiliary incision of the corneal limbus, so that the memory metal restores the annular structure (that is, the first memory alloy body 121 and the second memory alloy body 122 restore the annular structure), and the entire capsule bag body 110 is supported to unfold. As the memory metal restores the annular structure, the two fixing wings will slowly approach the sclera (especially the second fixing wing 124 approaches the sclera). When the final annular structure is formed, the first fixing wing 123 is clamped on the outer surface of the sclera by means of the first fixing rod joint body, and the second fixing wing 124 is clamped on the outer surface of the sclera by means of the second fixing rod joint body, so as to achieve the corresponding fixing effect;

[0156] Afterwards, the position of the intraocular lens bag can be checked to see if it is in the correct position. If it is not in the correct position, continue to adjust it. When the correct position is confirmed, the guide tail rod 125 can be cut off by using microscissors to stick to the outer side of the second fixing wing 124.

[0157] The scleral flap is repositioned, the scleral flap is sutured or the scleral puncture is sutured to prevent eyeball leakage, and the conjunctival incision is closed. After that, almost any type of existing posterior chamber intraocular lens can be implanted through the limbal incision in the normal intraocular lens implantation method, and the intraocular lens is placed through the capsule opening 111 on the front surface of the capsule bag body 110. The intraocular lens can be fixed to the eye through the intraocular lens capsule bag of this embodiment. After that, the viscoelastic agent in the eye can be sucked out with an IA head (automatic injection and suction needle) or a manual injection and suction head (if the capsule bag body 110 uses a corresponding viscoelastic agent, it can be sucked out at this time);

[0158] After this, the incision can be closed with water to complete the operation.

[0159] It should be noted that, in other surgical methods, the above-mentioned scleral flap may not be made, and only a scleral incision needs to be made instead of the above-mentioned scleral flap.

[0160] The intraocular lens capsule bag provided by the present invention can be matched into groups and can have 8-11 different specifications to meet the needs of adults and children. Correspondingly, the intraocular lens capsule bag pusher can also have 8-11 different specifications, and the intraocular lens capsule bag pusher assembly can also have 8-11 different specifications accordingly.

[0161] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. An intraocular lens capsule bag, characterized in that: include: A pouch body, wherein the pouch body is a flexible and foldable pouch body having a pouch opening; A bladder bag supporting and fixing structure, wherein the bladder bag supporting and fixing structure comprises a first memory alloy body and a second memory alloy body; The first memory alloy body and the second memory alloy body penetrate the pouch body; When the intraocular lens capsule is in an implanted state, the first memory alloy body and the second memory alloy body form an annular structure, and the annular structure is located inside the capsule body to expand the capsule body, so that the capsule body can be loaded with the intraocular lens; When the intraocular lens capsule is in a push injection state, the first memory alloy body and the second memory alloy body are straightened into a linear structure, and the capsule body is wound around the linear structure; The bag support fixing structure further includes a first fixing wing and a second fixing wing, wherein the first fixing wing is connected to the first end of the first memory alloy body and the second memory alloy body, and the second fixing wing is connected to the second end of the first memory alloy body and the second memory alloy body; It also includes a first fixing rod and a second fixing rod, wherein the first fixing rod is used to fix the first fixing wing to the eye, and the second fixing rod is used to fix the second fixing wing to the eye; The first fixing wing has a first through hole, the length of the first fixing rod is greater than the length of the first through hole, the first fixing rod passes through the first through hole and both ends protrude from the first through hole; the two ends of the first fixing rod are used to be fixed on the scleral surface or between the scleral layers of the eye; The second fixing wing has a second through hole, the length of the second fixing rod is greater than the length of the second through hole, the second fixing rod passes through the second through hole and both ends protrude from the second through hole; the two ends of the second fixing rod are used to be fixed on the scleral surface or between the scleral layers of the eye; The material of the pouch body is acrylic; The second fixed wing is further connected to a guide tail rod; or the second fixed wing is further connected to a guide tail pipe.

2. The intraocular lens capsule bag according to claim 1, characterized in that: The oblate spherical bag body as a whole is an oblate spherical bag body having the bag opening.

3. The intraocular lens capsule bag according to claim 1, characterized in that: The lengths of the first fixing wing and the second fixing wing are half of the lengths of the first fixing rod and the second fixing rod.

4. The intraocular lens capsular bag according to claim 1, characterized in that: The first fixed wing, the second fixed wing, the first fixed rod, the second fixed rod and the guide tail rod are made of PMMA.

5. The intraocular lens capsular bag according to claim 1, characterized in that: The first memory alloy body and the second memory alloy body are made of titanium memory alloy.

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