CN111529127A - Intraocular lens capsular bag injector and intraocular lens capsular bag injector assembly - Google Patents

Abstract

An intraocular lens capsular bag injector and an intraocular lens capsular bag injector assembly. The intraocular lens capsular bag injector comprising: the injector head comprises a first hollow pipe body, and a pipeline in the first hollow pipe body is a first pipeline; the injector holding part comprises a second hollow pipe body, and a pipeline in the second hollow pipe body is a second pipeline; the injector handle comprises a handle rod and an injection core which are connected together; the head part of the injector is connected with the holding part of the injector, the rear end of the first hollow pipe body is connected with the front end of the second hollow pipe body, and the second pipeline is communicated with the first pipeline; the handle is located within the second conduit, the handle being slidable within the second conduit; the push core is located within the second conduit, the push core being movable within the second conduit and the first conduit. The intraocular lens capsular bag injector is for implantation of an intraocular lens capsular bag.

Description

Intraocular lens capsular bolus injector and intraocular lens capsular bolus assembly

technical field

The invention relates to the technical field of medical devices, in particular to an intraocular lens capsular bag injector and an intraocular lens capsular bag injection assembly.

Background technique

The lens is composed of the lens capsule, the lens epithelium, the lens fibers and the suspensory ligament. The lens capsule and the suspensory ligament connected to the lens together with the iris form the lens-iris septum system, which separates the eyeball into anterior and posterior segments. Physiological aspects play an important role.

Ophthalmic lens diseases, including: Marfan syndrome, traumatic lens subluxation and total dislocation, surgically induced lens capsule rupture and suspensory ligament injury, etc.

These ophthalmic lens diseases can cause defects or even loss of the lens capsule and suspensory ligament. Once the capsule is deficient, it is easy to cause problems such as intraoperative intraoperative intraocular lens fixation or postoperative intraoperative intraocular lens displacement. The lack of the capsule will result in the inability to implant the intraocular lens using the traditional lens capsular fixation method.

SUMMARY OF THE INVENTION

The problem solved by the present invention is to provide an intraocular lens capsular bag, so as to solve the problem that the intraocular lens cannot be implanted due to the lack of the capsular membrane.

In order to solve the above problems, the present invention provides an intraocular lens capsular bag, comprising: a capsular bag body, the capsular bag body is a flexible and foldable bag body with a capsular bag opening; a capsular bag supporting and fixing structure, the capsular bag supporting The fixed structure includes a first memory alloy body and a second memory alloy body; the first memory alloy body and the second memory alloy body penetrate the capsular bag body; the intraocular lens capsular bag is in the implanted state, so the The first memory alloy body and the second memory alloy body enclose an annular structure, and the annular structure is located in the bag body to stretch and expand the bag body, so as to make the bag body The main body can be loaded with an intraocular lens; when the intraocular lens capsular bag is in a bolus state, the first memory alloy body and the second memory alloy body are straightened into a linear structure, and the capsular bag body is wound around the on a linear structure.

Optionally, the oblate spheroid body of the pouch bag is an oblate spheroid bag body with an opening of the pouch bag as a whole.

Optionally, the bag supporting and fixing structure further includes a first fixing wing and a second fixing wing, and the first fixing wing is connected to the first ends of the first memory alloy body and the second memory alloy body. , the second fixed wing is connected to the second ends of the first memory alloy body and the second memory alloy body.

Optionally, the intraocular lens capsular bag further includes a first fixing rod and a second fixing rod, 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 eye. The second fixed wing is fixed to the eye.

Optionally, 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 the two The end protrudes from the first through hole; the two ends of the first fixing rod are used for fixing on the sclera surface or between the sclera layers of the eye; the second fixing wing has a second through hole, and the second fixing rod has a second through hole. The length is greater than the length of the second through hole, the second fixing rod passes through the second through hole and two ends protrude from the second through hole; the two ends of the second fixing rod are used for fixing on the eye the scleral surface or between the scleral layers.

Optionally, the second fixed wing is further connected with a guide tail rod; or, the second fixed wing is further connected with a guide tail pipe.

Optionally, 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.

Optionally, the material of the first fixed wing, the second fixed wing, the first fixed rod, the second fixed rod and the guide tail rod is PMMA.

Optionally, the material of the first memory alloy body and the second memory alloy body is titanium memory alloy.

Optionally, the material of the pouch body is acrylate.

Advantages of the intraocular lens capsular bag of the present invention include:

1. It can be used for intraocular lens implantation to solve the problem that intraocular lens cannot be implanted due to the lack of capsule;

2. Its structure allows it to be used to fit various types of intraocular lenses. Due to the regular structure of the intraocular lens capsular bag (capsular bag body) itself, the capsular bag body is an oblate spherical structure with a capsular bag opening, and the capsular bag body is also It is flexible, therefore, it can ensure the correct position of the intraocular lens after surgery, and can ensure the correct position of the intraocular lens after surgery;

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 2 small incisions (such as 3mm) are needed on the sclera surface, and the damage is small; at the same time, sutures are avoided. Sewing, easy to use.

In order to solve the above problems, the present invention also provides an intraocular lens capsular bag injector, comprising: an injector head, wherein the injector head includes a first hollow tube body, and the first hollow tube body The inner pipeline is the first pipeline; the handle of the bolus device includes a second hollow tube body, and the pipeline inside the second hollow tube body is the second pipeline; the handle of the bolus device, The injector handle includes a handle rod and an injector core that are connected together; the injector head is connected to the injector grip, and the rear end of the first hollow tube is connected to the first hollow tube. The front end of the two hollow pipe bodies, the second pipe communicates with the first pipe; the handle rod is located in the second pipe, and the handle rod can slide in the second pipe; the push rod A plunger is located within the second conduit, and the bolus plunger is movable within the second conduit and the first conduit.

Optionally, the injection core is a solid rod, or the injection core is an open tube, or the injection core is a semi-solid rod with a nozzle at the end.

Optionally, the bolus head further includes a guide groove, and the guide groove is connected to the rear end of the first hollow tubular body; when the bolus head is connected to the bolus grip , the guide groove is inserted into the second pipe.

Optionally, the guide groove is a groove body of a semi-circular tubular structure.

Optionally, the side of the guide groove has a pair of connecting wings; the pipe wall of the second hollow tube body has a connecting groove opened from the end face inward; the head of the injector and the injector When the grips are connected, the connecting wings are inserted into the connecting grooves.

Optionally, the inner diameter of the second pipe is equal to the outer diameter of the first hollow tube body, and when the injector head is connected to the injector grip, the second hollow tube body is The end face and the connecting wing form an annular stepped face.

Optionally, the bolus holder further includes a pair of grasping wings, the grasping wings are symmetrically located on the outer side wall of the second hollow tube.

Optionally, the bolus handle further includes a tail plate, and the tail plate is connected to the rear end surface of the handle rod.

The advantages of the intraocular lens capsular bag injector of the present invention include:

1. Adopting a split design, the intraocular lens capsular bag in the implanted state can be placed, and the corresponding intraocular lens capsular bag can be implanted conveniently;

2. 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 through the head of the bolus injector, the incision is small, and the risk is small;

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

In order to solve the above problems, the present invention also provides an intraocular lens capsular bag injection assembly, including the intraocular lens capsular bag injection device as described above, and an introducer, wherein the introducer includes a grip portion and a guide tube, The guide tube is connected under the side surface of the grip portion. The intraocular lens capsular bag bolus assembly further facilitates the implantation process of the intraocular lens capsular bag.

Description of drawings

1 is a schematic diagram of an intraocular lens capsular bag provided in an embodiment of the present invention in an implanted state;

Fig. 2 is the schematic diagram of the intraocular lens capsular bag shown in Fig. 1 after omitting the main body of the capsular bag;

Figure 3 is a schematic view of the intraocular lens capsular bag shown in Figure 1 in a first transition state;

4 is a schematic view of the intraocular lens capsular bag shown in FIG. 3 after omitting the main body of the capsular bag;

5 is a schematic view of the intraocular lens capsular bag shown in FIG. 1 in a second transition state;

Fig. 6 is the schematic diagram of intraocular lens capsular bag shown in Fig. 1 under the state of bolus;

Fig. 7 is the side view of the capsular bag main body of the intraocular lens capsular bag shown in Fig. 1;

Figure 8 is an enlarged schematic view of the first fixed wing in the intraocular lens capsular bag shown in Figure 1;

Fig. 9 is the schematic diagram after the first fixing rod and the first fixing wing shown in Fig. 8 are matched;

10 is a schematic diagram of the injector head of the intraocular lens capsular bag injector provided by an embodiment of the present invention;

11 is a schematic diagram of the intraocular lens capsular bag injector provided by the embodiment of the present invention, the handle of the injector and the handle of the injector are connected together;

12 is a schematic diagram of the injector handle of the intraocular lens capsular bag injector provided by the embodiment of the present invention;

Fig. 13 is an enlarged schematic view of the structure of the front end portion of the handle of the injector shown in Fig. 11;

14 is a schematic diagram of the intraocular lens capsular bag injector provided by an embodiment of the present invention after assembly;

Figure 15 is a schematic view of the introducer in the intraocular lens capsular bag injector assembly;

FIG. 16 is a schematic diagram of the intermediate state of the intraocular lens capsular injector and the intraocular lens capsular bag during the implantation of the intraocular lens capsular bag.

Detailed ways

For the defect or absence of the lens capsule and suspensory ligament, the current clinical solution is to use intraocular lens suture suspension. Disadvantages of this approach include:

(1) Not all design types of intraocular lenses can be used for suture suspension;

(2) Suture suspension of intraocular lens is difficult to achieve complete balance of the tension of each intraocular lens loop due to artificial fixed sutures, so intraoperative or postoperative intraocular lens deviation is often observed, which affects the postoperative vision of patients;

(3) With suture fixation, in the long-term (more than 10 years in the literature), the suture may degrade, resulting in intraocular lens displacement or posterior dislocation, requiring reoperation.

For the partial defect of the lens capsule or the partial rupture of the suspensory ligament, another clinical solution is to implant the capsular bag tension ring, which has the following disadvantages:

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

(2) The implantation of the capsular bag tension ring still needs to be fixed by the natural lens suspensory ligament, but patients with auto-suspensory ligament dysplasia such as Marfan syndrome still have the risk of intraocular lens displacement in the long term;

(3) If the modified sutureable capsular bag tension ring is used for implantation, due to the imbalance of suture force, the intraocular lens is prone to deviation after operation, which affects the visual quality of the patient; and if the suture fixation method is used, there will be long-term sutures. Risk of IOL-tension ring complex displacement due to degradation.

According to the analysis of the inventors, if the lens capsule and suspensory ligament are defective or missing, implantation of an intraocular lens capsular bag should be considered. But at present, there are no reports of intraocular lens capsular bag products in clinical practice.

The inventor of the present invention proposes an intraocular lens capsular bag that can be implanted through a scleral incision minimally invasively (eg, 3 mm) without sutures. The intraocular lens capsular bag implantation process can be matched with a dedicated injector. Therefore, the present invention also provides a dedicated injector for implanting the intraocular lens capsular bag.

For a clearer representation, the present invention will be described in detail below with reference to the accompanying drawings.

An embodiment of the present invention provides an intraocular lens capsular bag, please refer to FIG. 1 to FIG. 9 in combination.

As shown in FIG. 1 , the intraocular lens capsular bag provided in this embodiment includes a capsular bag body 110 and a capsular bag supporting and fixing structure (not marked as a whole).

The pouch body 110 is a flexible collapsible pouch body with a pouch opening 111 .

The bag supporting 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 through the bag body 110 . 1 and 3 both show that the first memory alloy body 121 and the second memory alloy body 122 penetrate through the bag body 110 .

FIG. 1 shows the structure of the intraocular lens capsular bag in an implanted state, and the capsular bag body 110 is in a state of natural expansion, and can be used for implanting a corresponding intraocular lens.

The first memory alloy body 121 and the second memory alloy body 122 located inside the bag body 110 enclose a ring structure (the ring structure is not marked separately, refer to the corresponding content in FIG. 2 ), and the ring structure is located within the bag body 110 within the It is used to stretch and expand the capsular bag body 110 so that the capsular bag body 110 can be loaded with an intraocular lens.

2 is in FIG. 1 , the structure of the bag body 110 is omitted, that is, the structure of the bag supporting and fixing structure is separate, and the bag supporting and fixing structure is in the implanted state (or when the initial production is completed). ) structure. It can be seen from FIG. 2 that the first memory alloy body 121 and the second memory alloy body 122 enclose the above-mentioned annular structure. The diameter of the annular structure is about 10 mm, and the annular structure functions to support the bag body 110 . It can also be seen in FIG. 2 that, in addition to the annular structure enclosing the middle of the first memory alloy body 121 and the second memory alloy body 122, both ends of the first memory alloy body 121 still have a straight rod structure (not marked), respectively. Both ends of the two memory alloy bodies 122 still have a section of straight rod structures (not marked) respectively, and these straight rod structures can be set to be shorter, such as 1-2 mm.

The existence of the above-mentioned straight rod structure enables the cooperation of the first memory alloy body 121 and the second memory alloy body 122 with the bag body 110 , and the cooperation between the first memory alloy body 121 and the second memory alloy body 122 and the fixed wing described later. much easier. However, in other embodiments, the above-mentioned straight rod structure may also be unnecessary.

The first memory alloy body 121 and the second memory alloy body 122 are made of memory metal alloy material, and the state when the external force is removed is the state shown in FIG. 2 .

FIG. 6 shows that when the intraocular lens capsular bag is in a bolus state, the first memory alloy body 121 and the second memory alloy body 122 are straightened into a linear structure, and the capsular bag body 110 is wound on the linear structure.

Figure 1 is not only the shape (state) of the implanted state, but also the shape of the IOL capsular bag made at the beginning. Therefore, the IOL capsular bag has been fabricated. In order to realize the subsequent implantation process, the IOL capsular bag needs to be From the form shown in FIG. 1 , it is adjusted to the form shown in FIG. 6 , therefore, it is necessary to refer to the corresponding processes in FIGS. 1 to 6 .

3 and 5 show the first transition state and the second transition state of the intraocular lens capsular bag. As mentioned above, this is because the intraocular lens capsular bag provided in this embodiment includes two states, one is the expanded state after implantation, that is, the implanted state; the other is the bolus state (at this time the first The memory alloy body 121 and the second memory alloy body 122 are straightened, and the bag 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 be able to switch between the two states, a corresponding intermediate transition state is also required. 3 shows 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 bag body 110 is not folded, so the bag body 110 is not wrapped around on the first memory alloy body 121 and the second memory alloy body 122 . 5 shows the second transition state, which is also before the implantation state. The bag body 110 is only a schematic diagram of a half fold, and the bag body 110 is also not wound on the first memory alloy body 121 and the second memory alloy body 122 . In addition, FIG. 4 shows the structure after removing the bag body 110 in the first transition state shown in FIG. 3 . At this time, the first memory alloy body 121 and the second memory alloy body 122 have a linear structure.

Please refer to FIG. 7 , which shows the side view structure of the bag body 110. The bag body 110 is an oblate spherical bag body with a bag opening 111 as a whole, and when viewed from the side, it is a two-sided oblate spherical structure, and one of the two sides is a spherical bag body. , corresponding to the front shown in FIG. 1 (there is a capsular bag opening 111 with a diameter of about 5.5mm in the center, and the capsular bag opening 111 is used as the implantation hole of the intraocular lens), and the other side of the two faces is The back side is the back side of the inner bottom corresponding to the inside of the opening 111 in FIG. 1 . From this, it can be seen that in the pouch main body 110, the side with the opening 111 is the front of the pouch, and the side without holes is the back of the pouch.

In this embodiment, the pouch body 110 is a foldable pouch body, specifically a flexible foldable pouch body. Wherein, the material of the bag body 110 may be acrylate to ensure corresponding flexibility. The pouch body 110 material may be hydrophilic acrylic or hydrophobic acrylic.

In other embodiments, the capsular bag body 110 may also be made of other polymer materials, as long as it can be implanted into the eye, transparent and stable.

Referring to FIGS. 1 to 6 , in this embodiment, the bag supporting and fixing structure further includes a first fixing wing 123 and a second fixing wing 124 , and the first fixing wing 123 is connected to the first memory alloy body 121 and the second memory alloy. The first end (not marked) of the body 122 , and the second fixed 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 fixed wing is connected with the end of the above-mentioned straight rod structure of each memory alloy body (when there is no straight rod structure, the fixed wing is directly connected with the annular structure in FIG. 1 and FIG. 2 ).

In this embodiment, FIG. 8 shows an enlarged structure of the first fixed wing 123 , and the hollow pipe of the first fixed wing 123 is the first through hole 1230 . That is, the first fixing wing 123 has the first through hole 1230 .

FIG. 9 , which is associated with FIG. 8 , further shows that the intraocular lens capsular bag of this embodiment further includes a first fixation rod 140 and a second fixation rod (the second fixation rod is not shown, you can refer to the first fixation rod 140 ) ), 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.

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 has both ends protruding from the first through hole; both ends of the first fixing rod 140 are used for Fixed on the scleral surface of the eye or between the scleral layers.

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 same length of the second fixing rod is greater than the length of the second through hole, and the second fixing rod passes through The two ends of the second fixing rod are used to be fixed on the sclera surface or between the sclera layers of the eye. That is, the first fixed wing 123 may be in the shape of a hollow cylinder, and the second fixed wing 124 may also be in the shape of a hollow cylinder.

It can be seen from the above that the shapes of the two fixed wings in this embodiment may be the same. For example, the fixed wings may be a cylindrical hollow cylinder with a circular hollow pipe having a diameter of 1 mm.

It can be seen from the above that the first fixing rod 140 and the second fixing rod in this embodiment can both be cylindrical rods with conical shapes on both sides. The diameter of the first fixing rod 140 shown in FIG. 9 can be 0.9 mm. The length (total length) can be 4mm. The fixation rod is designed as a conical cylindrical rod for the convenience of passing through the hollow tube in the center of the fixation wing and being fixed to the scleral surface or between the scleral layers. FIG. 9 shows that the first fixing rod 140 passes through the first through hole 1230 of the first fixing wing 123 (as shown in FIG. 8 ), and both ends of the first fixing rod 140 are used for fixing on the corresponding positions on the eyes (corresponding to The two ends of the second fixing rod are also used to fix the corresponding position 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 intraocular lens capsular bag can be seamlessly fixed on the eye. , avoiding suture stitching, so that a seamless fixation can be achieved.

In other embodiments, the tapered tip of the fixing rod may be set to be relatively round and blunt (not the spike shape in FIG. 9 ).

In this embodiment, further, the lengths of the first fixing wings 123 and the second fixing wings 124 may be half of the lengths of the first fixing rods 140 and the second fixing rods.

In other embodiments, the lengths of the first fixed wing 123 and the second fixed wing 124 may both be 2 mm, the cylindrical outer diameter of the first fixed wing 123 and the second fixed wing 124 may both be 2 mm, and the inner diameter may be 1 mm. (It should be noted that the scales in the drawings here are slightly different from the listed data. This also indicates that in other embodiments, these dimensions can be adjusted).

In this embodiment, the sides of the first fixed wing 123 are connected to the first ends of the first memory alloy body 121 and the second memory alloy body 122 , and the sides of the second fixed wing 124 are connected to the first memory alloy body 121 and the first end of the second memory alloy body 122 . The second ends of the two memory alloy bodies 122 are connected to each other.

It should be noted that, in other embodiments, the combination of the fixed wing and the fixed rod (small rod) may also be other shapes than those shown in FIG. 9 , such as a cylinder, an obtuse square, and preferably a human body that conforms to the shape of the outer ring of the eyeball. Engineering form, a shape similar to the Australian boomerang.

It should be noted that, in other embodiments, the shapes of the first fixed wing and the second fixed wing can be correspondingly deformed. For example, the two fixed wings can be in the shape of arrows with reflexes (the corresponding fixed rods are not required at this time). ), or the fixed wing has a structure with an elastic pop-up device (the corresponding fixing rod is not required at this time), the fixed wing is an expandable spherical shape (the corresponding fixing rod is not required at this time), and the fixed wing has a hollow screw fixing cap, such as Square, Hexagonal, Threaded Button-Shaped (Corresponding Fixing Rods Are Not Required At This Time). It can be seen comprehensively that the connection between the fixed wing and the fixed rod can be integrally formed, reversely folded and fixed, or the end of the fixed rod can be enlarged and fixed, and the fixed rod can be omitted.

Referring to FIGS. 1 to 6 , in this embodiment, the second fixed wing 124 is further connected with a guide tail rod 125 .

It should be noted that, in other embodiments, the second fixed wing may also be connected with a guide tail pipe. The design of the guide tail rod and guide tail tube is related to the push core of the follow-up injector, please refer to the subsequent content of this manual.

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

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 may be PMMA. That is, in this embodiment, the fixed wings on both sides and the guide tail rod 125 are selected from PMMA material. At the same time, correspondingly, the fixed rod is made of PMMA material. PMMA materials are relatively mature in medical devices.

This embodiment is an intraocular lens capsular bag made by using the memory alloy principle. Memory alloys usually refer to shape memory alloys (SMA).

In this embodiment, the memory alloy material and other materials can be used to manufacture the intraocular lens capsular bag shown in FIG. 1 . After that, the entire capsular bag supporting and fixing structure can be straightened first, and then the flexible capsular bag body 110 can be wound. On the folded pouch support and fixed structure;

Since the capsular bag body 110 itself is made of polymer film, it has a certain film adhesion, especially the acrylic film, after it is wound on the capsular bag support and fixed structure, the intraocular lens can be made The pouch as a whole maintains the state shown in FIG. 6; or, in other cases, in order to ensure that the pouch body 110 remains in the state shown in FIG. 6 and does not loosen, a small amount of viscoelastic agent can be used to stick the pouch body 110, and during subsequent operations Then suck out these viscoelastics in the eye;

Then, after the intraocular lens capsular bag is sent into the corresponding position of the eye, by bypassing the corresponding capsular bag body 110 , the capsular bag supporting and fixing structure has a "memory" function due to the first memory alloy body 121 and the second memory alloy body 122 However, it can be slowly and naturally unfolded. This process can be helped by a certain external force, so as to slowly restore the intraocular lens capsular bag to the shape shown in Figure 1 (this process is carried out gradually, and the middle part of the capsular bag supporting and fixing structure can be retracted Returning to the bag body 110 ), from the state shown in FIG. 1 , the bag body 110 is unfolded, and the part of the first memory alloy body 121 and the second memory alloy body 122 located in the bag body 110 is restored to a ring-shaped structure ( 2), the annular structure keeps the capsular bag body 110 in a stretched and expanded state, so that the capsular bag body 110 can be used for subsequent implantation of various types of existing intraocular lenses.

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 use titanium alloy memory material.

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 bag body 110 , when the first memory alloy body 121 and the second memory alloy body 122 are drawn into a straight shape, this The plane on which the two linear shapes are located is parallel to the pocket opening 111 , that is, the first memory alloy body 121 and the second memory alloy body 122 penetrate the pocket body 110 in a direction parallel to the plane where the pocket opening 111 is located.

It should be noted that the ring body (ring 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 bag body 110 , but these The through hole is a hole with a fixed size, that is, a hole through which the first memory alloy body 121 and the second memory alloy body 122 pass through when penetrating the bag 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, thereby ensuring that the first memory alloy body 121 and the second memory alloy body 122 can move back and forth from these through holes for a certain distance, and further 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 inflection part of the first memory alloy body 121 and the second memory alloy body 122 (the inflection part is the connection position of the straight rod structure and the annular structure) is just located in the through hole, so as to locate the annular structure The position of the rear pocket body 110 is restored so that the pocket body 110 is upright. Correspondingly, when the first memory alloy body 121 and the second memory alloy body 122 are straightened into a straight state, more parts of them are exposed outside the through holes.

The intraocular lens capsular bag provided by the embodiments of the present invention can be used to replace the natural lens capsular bag, so as to restore the anatomical structure of the lens-iris septum, and solve the problem that the intraocular lens cannot be implanted due to the lack of the capsule.

The intraocular lens capsular bag provided by the embodiments of the present invention can be used to insert various types of intraocular lenses, and can assist in implanting all currently designed types of posterior chamber intraocular lenses. In addition, using the intraocular lens capsular bag provided by the embodiment of the present invention, due to the regular structure of the intraocular lens capsular bag (capsular bag body 110 ), the capsular bag body 110 has a regular open oblate spherical structure, and the capsular bag body 110 is flexible. , therefore, the post-operative intraocular lens position can be guaranteed.

The intraocular lens capsular bag provided by the embodiment of the present invention has different states due to its structural characteristics, which in turn leads to its unique implantation method (please continue to refer to the subsequent contents of the manual), so that minimally invasive can be achieved, and only the scleral surface is required to do 2 small incisions (eg 3mm), small damage; at the same time avoid suture suture, easy to use.

Various materials used in the embodiments of the present invention have good compatibility with the human body, no rejection, and high safety. The corresponding production materials are all existing mature materials, which have been used clinically for a long time and can be used for life without replacement.

Embodiments of the present invention also provide an intraocular lens capsular bag injector.

Please refer to Figure 10 to Figure 14 in conjunction with the intraocular lens capsular bag injector including:

The bolus head (not marked), as shown in Figure 10, the bolus head includes a first hollow tube body 211, and the pipeline inside the first hollow tube body 211 is the first pipeline (not marked);

The bolus holder (not marked), as shown in FIG. 11 , the bolus holder includes a second hollow tube body 221, and the pipeline inside the second hollow tube body 221 is the second pipeline (not marked);

The bolus handle (not marked), as shown in Figures 11 and 12, the bolus handle includes a handle rod 231 and a bolus core 232 connected together;

The head of the bolus is connected to the grip of the bolus. As shown in Figure 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 pipe is communicated with the first pipe;

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

A bolus core 232 is located within the second conduit, and the bolus core 232 is movable within the second conduit and the first conduit.

Figure 14 shows a schematic diagram of the IOL capsular bag injector assembled together. It can be seen that the injector head is at the forefront, the injector grip is in the middle, the injector handle is at the rearmost end, and the pusher A part of the handle of the injector extends into the handle of the injector (the front and back of this embodiment, the position close to the human eye during the operation is the front, and the position far from the human eye during the operation is the rear).

FIG. 12 further shows that the stem 231 and the bolus core 232 are generally connected back and forth, and the bolus core 232 extends forward along the front end of the stem 231 .

In this embodiment, the bolus core 232 is an open tube body. Correspondingly, at this time, the second fixed wing 124 of the previous embodiment is connected to the guide tail rod 125 , so that the push injection core 232 can cooperate with the guide tail rod 125 , by inserting the guide tail rod 125 into the bolus core 232 (open tube body), the intraocular lens capsular bag can be injected better with the intraocular lens capsular bag injector.

In other embodiments, the injection core may also be a solid rod, or the injection core may be a semi-solid rod with a nozzle at the end. Specifically, when the second fixed wing of the foregoing embodiment is connected with a guide tail pipe, the injection core can be a solid rod body; when the second fixed wing of the foregoing embodiment is connected with a guide tail rod, the injection core can also be It is a semi-solid rod body with a nozzle.

Referring back to FIG. 10 , the injector head further includes a guide groove 212 , and the guide groove 212 is connected to the rear end of the first hollow tubular body 211 . When the bolus head and the bolus grip are connected, the guide groove 212 is inserted into the second conduit.

Referring back to FIG. 10 , in this embodiment, the side surface of the guide groove 212 is provided with a pair of connecting wings 213 . The pipe wall of the second hollow pipe body 221 has a connecting groove 223 (refer to FIG. 13 ) opened from the end surface inward. When the injector head and the injector grip are connected, the connecting wings 213 are inserted into the connecting grooves 223 .

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.

FIG. 13 shows an enlarged schematic view of the structure of the front end portion of the second hollow tube body 221 in the structure shown in FIG. 11 .

It should be noted that, FIG. 13 shows that in this embodiment, the connecting groove 223 does not pass through the entire pipe wall of the second hollow pipe body 221 . However, in other embodiments of the present invention, the connecting groove may penetrate through the wall of the second hollow tubular body from the inside to the outside.

In this embodiment, the inner diameter of the second pipe is equal to the outer diameter of the first hollow tube body 211 (obviously, the outer diameter of the second hollow tube body 221 is larger than the outer diameter of the first hollow tube body 211 ), and the injector When the head is connected to the injector grip, the end face (front end face) of the second hollow tube body 221 and the connecting wing 213 form an annular stepped face. The annular stepped surface is a position that can prevent the handle of the bolus from entering the corresponding surgical wound.

It should be noted that, by making full use of the above-mentioned annular step surface, it is possible to prevent the disengagement of the injector head and the injector grip during use. Specifically, because the connecting wings 213 are inserted into the connecting grooves 223 to form an annular stepped surface, if glue is applied to the annular stepped surface, or some fixing rings (the fixing rings can be hung on the following The gripping wing 222) can better prevent the connecting wing 213 from disengaging from the connecting groove 223 during use, that is, preventing the disengagement of the injector head and the injector grip. When it is necessary to separate the injector head and the injector grip, the corresponding anti-dropping effect is released by removing the glue or the fixing ring.

In this embodiment, the handle of the bolus device further includes a pair of grasping wings 222 , and the grasping wings 222 are symmetrically arranged on the outer side wall of the second hollow tubular body 221 .

In this embodiment, the pusher handle further includes a tail plate 233 , and the tail plate 233 is connected to the rear end surface of the handle rod 231 . The tail plate 233 increases the area of the rear of the handle of the bolus, making the bolus more comfortable to use.

In this embodiment, the head of the injector may specifically include a first hollow tube body 211 (a hollow cylinder, the interior is the first pipe) with a diameter of 2mm, and the length of the first hollow tube body 211 may be 20mm . The first conduit may also be referred to as the lead conduit.

In this embodiment, the first hollow pipe body 211 is connected with a guide groove 212 , and the groove body of the guide groove 212 may be connected with the first hollow pipe body 211 and integrally formed.

In this embodiment, the guide groove 212 is a groove body with a semicircular tubular structure. That is, the guide groove 212 may specifically be a semi-circular tubular structure (semi-hollow cylinder) with the side and bottom facing upward. As shown in FIG. 10 , the guide groove 212 can accommodate an intraocular lens capsular bag (refer to the corresponding content of the foregoing embodiment). In 10, only the guide tail rod 125 of the intraocular lens capsular bag is shown, and the other parts of the intraocular lens capsular bag have been placed in the first channel of the first hollow tubular body 211 in the implanted state.

The length of the guide groove 212 may be 20 mm, and the length of the guide groove 212 may be approximately the same as the length of the first memory alloy body 121 and the second memory alloy body 122 of the intraocular lens capsular bag when they are linear, and may also be slightly smaller than the length of the first memory alloy body 121 . The length when the alloy body 121 and the second memory alloy body 122 are linear. The radius of the guide groove 212 may be 1 mm (ie, the diameter is also 2 mm).

The length of the first pipe, that is, the length of the first hollow tube body 211, may be equal to the length of the first memory alloy body 121 and the second memory alloy body 122 when they are linear, or slightly larger than the first memory alloy body 121 and the second memory alloy body 122. The length of the second memory alloy body 122 when it is linear.

In this embodiment, the two sides of the guide groove 212 are symmetrically connected with a pair of connecting wings 213, and the connecting wings 213 can be in the form of a rectangular parallelepiped, and its length can be 15mm, the width can be 10mm, and the thickness can be 2mm (it should be noted that Fig. are not shown in corresponding size ratios).

The material of each part of the structure 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.

The intraocular lens capsular bag injector provided by the embodiment of the present invention adopts a split design, and can place the intraocular lens capsular bag in an implanted state to realize the implantation of the corresponding intraocular lens capsular bag.

In the intraocular lens capsular bag injector provided by the embodiment of the present invention, due to the split design, the head of the injector can be designed to be smaller, so it can be used to implant the corresponding intraocular lens capsular bag through a small incision (eg, 3 mm). The small incision only needs to be able to pass through the head of the bolus, and the incision is small and the risk is small.

The intraocular lens capsular bag injector provided by the embodiment of the present invention has compact components, convenient use and low manufacturing cost.

The overall structure of the intraocular lens capsular bag injector provided by the embodiment of the present invention can be made of PVC material, and the material is mature, can be sterilized by high temperature and high pressure, and is convenient to produce.

In the intraocular lens capsular bag injector provided by the embodiment of the present invention, the injecting power structure (the handle of the injector) can also be integrally formed, the implantation is smooth, and the pushing is convenient.

The intraocular lens capsular bag injector provided by the embodiment of the present invention is designed with a hollow injector tube (the handle of the injector and the injector head communicate with each other, and the injector head can guide the intraocular lens capsular bag body on the The tail rod 125 is completely incorporated, and the guide tail rod 125 can also be exposed to the guide groove 212), and it is stable and convenient when pushing it later.

The intraocular lens capsular bag injector provided by the embodiment of the present invention has an integral injector head, that is, the first hollow tubular body 211 and the guide groove 212 (receptor groove) having an integral structure, and the injection The length of the main body of the device head can be greater than 15mm (ie, the length of the first hollow tube body 211 is greater than 15mm), which is convenient for penetrating the eyeball as a whole.

Embodiments of the present invention also provide an intraocular lens capsular bag injection assembly.

Please refer to FIG. 15 , the bolus assembly includes the intraocular lens capsular bag bolus provided in the previous embodiment, and also includes an introducer (not marked).

The guide includes a grip portion 311 and a guide tube 312 , and the guide tube 312 is connected under the side surface of the grip portion 311 . Wherein, the orifice of the guide tube 312 is a slanted orifice, which is helpful for realizing the function of the guide.

The guide holding portion 311 may be a rectangular parallelepiped structure, and its length may be 5 mm, its width may be 5 mm, and its height may be 10 mm. The position of one side of the gripping portion 311 near the bottom surface has a hollow tube cylindrical structure with a slope, that is, the guide tube 312. The diameter of the tube of the guide tube 312 can be 2.5mm, so that the injector head with a diameter of 2mm (refer to Corresponding contents of the foregoing embodiments) are inserted, the appearance of the guide tube 312 may be 3 mm, and the length thereof may be 10 mm.

The material of each part of the structure of the guide provided in this embodiment can also be selected as a medical PVC material that is resistant to high temperature and high pressure.

To sum up, the intraocular lens capsular bag injection assembly provided in this embodiment not only has an intraocular lens capsular bag injector, but also an introducer, and the introducer can make the actual surgical operation more simple and convenient. Please refer to the subsequent sections of this manual. content.

To sum up, the present invention provides an intraocular lens capsular bag and an intraocular lens capsular bag injector, and also provides an intraocular lens capsular bag injection assembly together with an intraocular lens capsular bag injector and an introducer.

Please refer to FIG. 1 to FIG. 16 , use the intraocular lens capsular bag injection assembly (including the intraocular lens capsular bag injector and the introducer) of the present invention to realize the implantation of the intraocular lens capsular bag of the present invention, and the process can be as follows :

The bulbar conjunctiva is cut at 10:00 and 4:00 of the cornea of the eye, and a 3mm×4mm rectangular scleral flap can be made, and the thickness of the flap is about 1/2-1/3mm:

A 3mm scleral puncture knife was used to make a transparent corneal auxiliary incision, and a viscoelastic agent was injected into the anterior chamber to support the anterior chamber with the viscoelastic agent;

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

Take out the intraocular lens capsular bag (in the form of a bolus after taking it out, as shown in Figure 6), place it in the guide groove 212 of the intraocular lens capsular bag injector, and push the entire intraocular lens capsular bag into the first along the guide groove 212 in advance. In a hollow tube 211, only the guide tail rod 125 at the rear end can be reserved, as shown in FIG. 10;

Insert the hollow bolus tube of the bolus handle (ie, the bolus core 232) into the guide tail rod 125, connect the bolus head to the bolus grip and the bolus handle, and pass the bolus head The connecting wings 213 of the bolus are embedded in the connecting grooves 223 of the handle of the injector, and are fixed to form a state that can be injected, as shown in Figure 14;

Hold the IOL capsular bag injector face up with the right hand, insert the head of the injector from the 10:00 scleral implant port, and insert the guide of the IOL capsular bag injection assembly (eg, 4:00 scleral implant port) Figure 15), in the intraocular pupil area, guide the head of the bolus device through the 4:00 scleral implantation port through the scleral surface through the guide, and gently push the handle of the bolus device to push the first part of the intraocular lens capsular bag into place. The fixed wing 123 is pushed out of the injector head, and the state at this time is shown in FIG. 16 (eyes are not shown). FIG. 16 also shows that the first memory alloy body 121, the second memory alloy body 122 and the bag body 110 also have a part has been ejected from the bolus head;

In the state shown in FIG. 16 (or in a state in which only the first fixed wing 123 is pushed out), the left hand holds the micro toothless forceps and clamps the first fixed rod 140 through the first fixed rod. The first through hole 1230 of the 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;

Then, while retracting the entire bolus, push the bolus handle to implant the intraocular lens capsular bag in the eye;

Exit the injector head from the scleral implantation port at 10:00, leaving the second fixed wing 124 and the guide tail rod 125 outside the sclera. At this time, you can hold the micro toothless forceps with your left hand to clamp the second fixed rod (not shown). out) through the second through hole (hollow tube) of the second fixed wing 124, and the second fixed wing 124 is located at the midpoint of the second fixed rod, and the second fixed rod and the second fixed wing 124 are located on the sclera surface together outside another location;

Open the folded capsular bag body 110 from the limbal auxiliary incision with microscopic intraocular forceps, so that the memory metal restores the annular structure (ie the first memory alloy body 121 and the second memory alloy body 122 restore the annular structure), and supports the whole The bag body 110 is deployed, and as the memory metal restores the annular structure, both the fixed wings will gradually approach the sclera (especially the second fixed wing 124 is close to the sclera). When the final annular structure is formed, the second fixed wing 124 The outer surface of the sclera is clamped by the second fixing rod combination to achieve the corresponding fixing effect;

After that, it is possible to check whether the position of the intraocular lens capsular bag is in the right position, if not, continue to adjust; when the position is confirmed, the outer side of the second fixed wing 124 can be cut with a microscope, and the guide tail rod 125 can be cut off;

The scleral flap is repositioned, the scleral flap is sutured or the scleral puncture is sutured to prevent leakage of the globe, the conjunctival incision is closed, after which almost any type of existing posterior chamber intraocular lens can be implanted through the limbal incision in the normal IOL implantation manner. The opening 111 on the front surface of the capsular bag body 110 is placed into the intraocular lens. The intraocular lens can be fixed to the eye through the intraocular lens capsular bag of this embodiment, and then the ia head (automatic injection needle) or manual injection head can be used for suction removal. The viscoelastic agent in the eye (if the pouch body 110 uses the corresponding viscoelastic agent, it can be sucked out at this time);

After that, the mouth can be closed with water to complete the operation.

It should be noted that, in other surgical methods, the above-mentioned scleral flap may not be performed, and only a scleral incision needs to be made to replace the above-mentioned scleral flap.

The intraocular lens capsular bag provided by the 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 capsular bag injector can also have 8-11 different specifications, and the intraocular lens capsular bag injection component can also have 8-11 different specifications.

Although the present invention is disclosed 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 should be based on the scope defined by the claims.

Claims (10)

1. an intraocular lens capsular bag injector, is characterized in that, comprises: a bolus head, the bolus head includes a first hollow tube body, and the pipeline inside the first hollow tube body is a first pipeline; a bolus holder, the bolus holder comprises a second hollow tube body, and the pipeline inside the second hollow tube body is a second pipeline; A bolus handle, the bolus handle includes a handle bar and a bolus core connected together; The head of the injector is connected to the handle of the injector, the rear end of the first hollow tube is connected to the front end of the second hollow tube, and the second pipe is connected to the first hollow tube. pipeline connection; the handle rod is located in the second pipe, and the handle rod can slide in the second pipe; The bolus core is located within the second conduit, and the bolus core is movable within the second conduit and the first conduit. 2. The intraocular lens capsular bag injector according to claim 1, wherein the injection core is a solid rod body, or the injection core is an open tube body, or the injection core is a terminal with The semi-solid rod body of the nozzle. 3. The intraocular lens capsular bag injector according to claim 1 or 2, wherein the injector head further comprises a guide groove, and the guide groove is connected behind the first hollow tubular body When the head of the injector is connected with the handle of the injector, the guide groove is inserted into the second pipe. 4. The intraocular lens capsular bag injector according to claim 3, wherein the guide groove is a groove body with a semicircular tubular structure. 5. The intraocular lens capsular bag injector of claim 3, wherein: The side of the guide groove has a pair of connecting wings; The pipe wall of the second hollow pipe body has a connecting groove opened from the end face inward; When the injector head and the injector grip are connected, the connecting wings are inserted into the connecting grooves. 6. The intraocular lens capsular bag injector of claim 5, wherein the inner diameter of the second tube is equal to the outer diameter of the first hollow body, the head of the injector and the When the handle of the bolus device is connected, the end surface of the second hollow tube body and the connecting wing form an annular stepped surface. 7 . The intraocular lens capsular bag injector of claim 1 , wherein the injector handle further comprises a pair of grasping wings, the grasping wings are symmetrically arranged on the second hollow space. 8 . The outer wall of the tube. 8 . The intraocular lens capsular bag injector of claim 1 , wherein the injector handle further comprises a tail plate connected to the rear end surface of the handle rod. 9 . 9. An intraocular lens capsular bag injection assembly, characterized in that it comprises the intraocular lens capsular bag injection device according to any one of claims 1 to 8, further comprising an introducer, the introducer comprising a grip portion and a guide tube, the guide tube is connected under the side surface of the grip portion. 10 . The intraocular lens capsular bag injection assembly of claim 9 , wherein the orifice of the guide tube is a beveled orifice. 11 .

Images