capsulorhexis

Abstract

The capsule breaking device comprises a capsule breaking device, a motion control device and a delivery device. The capsule breaking device is arranged in the delivery device, the motion control device controls the motion of the capsule breaking device, and the capsule breaking device breaks the capsule of a capsule membrane. The delivery device can enter the eye from a small surgical incision, the pushing mechanism is pushed, the capsule breaking device and the motion control device are pushed into the eye, and the capsule breaking device is expanded and shaped under the action of a shaping mechanism composed of a receiving protection mechanism or a capsule breaking mechanism. Under the action of the motion control device, the blade of the capsule breaking mechanism extends and cuts the capsule membrane. The self-shaping function of the shaping mechanism enables the capsule breaking device to automatically form the shape of a circular capsule cover after entering the eye, without the need for a clinician to manually tear it into a circle according to experience, which is more convenient for clinical use and greatly shortens the time for tearing the capsule.

Description

Technical Field

[0001] This invention relates to a capsule rupture device, particularly a capsule rupture device used in ophthalmic surgery. Background Technology

[0002] Cataract surgery is a common ophthalmic procedure. The routine process involves first removing a capsular hood from the anterior capsule, then removing the cloudy lens, and finally implanting an artificial lens. Removing the capsular hood is a crucial step in this process.

[0003] Currently, in clinical practice, capsulotomy is generally performed manually using capsulotomy forceps. The capsulotomy opening must be of appropriate size and perfectly centered. If the opening is too large, it is prone to tearing, and the capsulotomy operation time cannot be too long, resulting in excessive loss of viscoelastic material. If the opening is too small, the operating space is too small, making subsequent nucleus splitting and transfer difficult and prone to damaging intraocular tissues. To minimize radial tearing during subsequent phacoemulsification, ensuring the safety of the phacoemulsification surgery and the subsequent delivery of the lens nucleus, the edges must be continuous and smooth. Furthermore, to better ensure accurate fixation within the capsular bag during subsequent intraocular lens implantation, guaranteeing the best optical performance and reducing misalignment, the torn capsulotomized portion is typically required to be perfectly centered.

[0004] Therefore, the capsulorhexis procedure is a crucial but extremely difficult process in cataract surgery.

[0005] Based on current clinical needs, the purpose of this invention is to develop a cyst rupture device that can quickly rupture cysts, especially a cyst rupture device with a self-forming function, so as to simplify the cyst rupture process and shorten the cyst rupture time. Summary of the Invention

[0006] The capsule rupture device of the present invention is equipped with a forming mechanism that can automatically form the capsule. When the cutting edge of the capsule rupture device is exposed from the storage and protection mechanism, the capsule can be easily ruptured according to the set shape under the action of the forming mechanism. The capsule rupture process is very simple and convenient.

[0007] The cyst rupture device of the present invention is characterized by:

[0008] A. The capsule rupturer 100 includes a capsule rupture device 1, a motion control device 2, and a delivery device 3; the capsule rupture device 1 is disposed within the delivery device 3.

[0009] B. The motion control device 2 controls the movement of the cyst-rupturing device 1, and the cyst-rupturing device 1 performs cyst-rupturing treatment on the cyst membrane.

[0010] C. The delivery device 3 can be inserted into the eye through a small surgical incision.

[0011] The capsule-rupturing device 1 is housed within the delivery device 3. It can be delivered into the eye through a small surgical incision. Once inside the eye, the capsule-rupturing device 1 is ejected from the delivery device 3. The motion control device 2 controls the movement of the capsule-rupturing device 1, exposing the cutting edge 12-1 for capsule rupture. This method is very convenient for clinical use. Because the capsule-rupturing device 1 is positioned between the anterior capsule and the iris after entering the eye, its height is limited to no more than 2 mm, typically controlled within 1 mm.

[0012] The capsule rupture device 100 also includes a forming mechanism 4, which has a self-forming function. The forming mechanism 4 can be made of a shape memory alloy, which automatically restores its set shape after entering the eye; it can also be made of an elastic material, which can be compressed under external force and restore its set shape after the force is removed; or it can be a mechanical structure that can achieve a set shape under external force, such as mechanical force or magnetic field. The self-forming function of the forming mechanism 4 allows the capsule rupture device of this invention to automatically form a perfectly round capsule cap after entering the eye, eliminating the need for clinicians to manually tear it into a circle based on experience, making clinical use more convenient. The optimal shape of the forming mechanism 4 is a perfect circle, with a diameter typically between 3-12 mm, ideally around 6 mm.

[0013] The capsule breaking device 1 includes a storage and protection mechanism 11 and a capsule breaking mechanism 12, wherein the capsule breaking mechanism 12 is disposed inside or on the storage and protection mechanism 11.

[0014] The capsule-breaking mechanism 12 includes a cutting edge 12-1. The motion control device 2 can control the movement of the capsule-breaking mechanism 12. When the cutting edge 12-1 extends out from the storage and protection mechanism 11, it can perform capsule-breaking treatment on the capsule membrane.

[0015] The storage and protection mechanism 11 is located outside the capsule-rupturing mechanism 12. When capsule rupture is not required, the cutting edge 12-1 of the capsule-rupturing mechanism 12 is retracted within the storage and protection mechanism 11 to prevent accidental damage to surrounding tissues. When capsule rupture is required, the capsule-rupturing mechanism 12 moves under the action of the motion control device 2, and the cutting edge 12-1 extends from within the storage and protection mechanism 11 to rupture the capsule membrane. The inclusion of the storage and protection mechanism 11 enhances clinical safety.

[0016] The storage and protection mechanism 11 is a ring-shaped storage and protection mechanism 11-1 made of elastic material. The ring-shaped storage and protection mechanism 11-1 has an automatic forming function, constituting the forming mechanism 4. The ring-shaped storage and protection mechanism 11-1 can deform under external force and can be stored inside the sheath 31 of the delivery device 31. After the external force is released, the ring-shaped storage and protection mechanism 11-1 can return to its ring shape. Therefore, the ring-shaped storage and protection mechanism 11-1 has a self-forming function, constituting the forming mechanism 4. The elastic material can be any shape-forming elastic material such as elastic polymer materials or elastic metal materials.

[0017] The annular storage and protection mechanism 11-1 is made of shape memory alloy. Relying on the shape memory function of the shape memory alloy, after entering the eye, the annular storage and protection mechanism 11-1 can quickly return to the preset shape under the action of body temperature. Therefore, any different cap shape can be set as needed.

[0018] The cyst-breaking mechanism 12 is a ring-shaped cyst-breaking mechanism 12-2 made of elastic material. The ring-shaped cyst-breaking mechanism 12-2 has an automatic forming function and constitutes the forming mechanism 4. The ring-shaped cyst-breaking mechanism 12-2 can deform under external force and can be housed in the sheath 31 of the delivery device 31. After the external force is released, the ring-shaped cyst-breaking mechanism 12-2 can return to its ring shape. Therefore, the ring-shaped cyst-breaking mechanism 12-2 has a self-forming function and constitutes the forming mechanism 4.

[0019] The annular capsule-rupturing mechanism 12-2 is made of shape memory alloy. Relying on the shape memory function of the shape memory alloy, after entering the eye, the annular capsule-rupturing mechanism 12-2 can quickly return to a preset shape under the action of body temperature. Therefore, any different capsule shape can be set as needed.

[0020] The storage and protection mechanism 11 is equipped with a limiting mechanism 11-2. The limiting mechanism 11-2 can control the movement stroke of the capsule-breaking mechanism 12 in the depth direction, preventing excessive movement of the capsule-breaking mechanism 12 from causing accidental damage to surrounding tissues. Typically, the movement depth of the capsule-breaking mechanism 12 is 0.3mm-1mm, and the cutting depth is generally best controlled between 0.3-0.5mm.

[0021] The limiting mechanism 11-2 is a limiting groove 11-21, and / or a limiting spring, and / or a limiting block. The applicant has only listed the above three limiting methods here. In practical applications, those skilled in the art can design limiting mechanisms with different structures as needed, or use a combination of multiple limiting mechanisms to achieve the limiting function. The applicant will not give examples of each one here, but none of them depart from the protection scope of this application.

[0022] The storage and protection mechanism 11 has a smooth outer surface. The smooth outer surface of the storage and protection mechanism 11 can play a good protective role and effectively prevent the storage and protection mechanism 11 from causing accidental damage to surrounding tissues.

[0023] The motion control device 2 is a magnetic control device 21 and / or a mechanical control device 22. The applicant has only listed the above two motion control methods here. In practical applications, the motion control device 2 can also realize the movement of the capsule breaking mechanism 12 through other control methods such as electric fields or a combination of multiple control methods. The applicant will not give examples of each of these, but they all fall within the scope of protection of this application.

[0024] The mechanical control device 22 is a towing control device 22-1 and / or a lifting control device 22-2. The mechanical control device 22 may also be a rocker arm, a rotation, or other control methods, which will not be listed here, but all of which are within the scope of protection of this application.

[0025] The magnetic control device 21 consists of two pairs of magnetic poles 21-1; one pair of magnetic poles 21-1 is disposed on the capsule-breaking mechanism 12, or the capsule-breaking mechanism 12 is made of ferromagnetic material to form one pair of magnetic poles 21-1, and the other pair of magnetic poles 21-1 is disposed outside the eye; when like magnetic poles approach each other, the cutting edge 12-1 of the capsule-breaking mechanism 12 is pushed out under the action of magnetic force to cut the capsule membrane; when unlike magnetic poles approach each other, the cutting edge 12-1 of the capsule-breaking mechanism 12 is retracted under the action of magnetic force. The magnetic control method only requires the capsule-breaking mechanism 12 to be made of ferromagnetic material, without the need for additional auxiliary motion control design, resulting in a very simple structure.

[0026] The drag-type control device 22-1 includes a pull wire 22-1-1, which is connected to the capsule-breaking mechanism 12. Pulling the pull wire 22-1-1 exposes the cutting edge 12-1 of the capsule-breaking mechanism 12, and pulling the pull wire 22-1-1 drives the cutting edge 12-1 to move along the storage and protection mechanism 11 to cut the capsule membrane. At this time, the storage and protection mechanism 11 has a self-forming function, constituting the forming mechanism 4.

[0027] The lifting control device 22-2 includes a lifting mechanism 22-2-1, which is connected to the capsule-breaking mechanism 12. Controlling the lifting mechanism 22-2-1 causes the capsule-breaking mechanism 12 to move up and down. When the lifting mechanism 22-2-1 moves downwards, the cutting edge 12-1 of the capsule-breaking mechanism 12 is exposed, cutting the capsule membrane. When the lifting mechanism 22-2-1 moves upwards, the cutting edge 12-1 of the capsule-breaking mechanism 12 retracts. At this time, the capsule-breaking mechanism 12 has a self-forming function, constituting the forming mechanism 4.

[0028] The delivery device 3 includes a sheath 31 and a pushing mechanism 32. The capsule-rupturing device 1 and the motion control device 2 can be compressed within the sheath 31. After the delivery device 3 enters the eye, the pushing mechanism 32 can push out the capsule-rupturing device 1 and the motion control device 2 compressed within the sheath 31. The pushing mechanism 32 may typically be equipped with a pushing handle 32-1.

[0029] The pushing mechanism 32 is connected to the storage and protection mechanism 11 of the rupture device 1, or is integrated with the storage and protection mechanism 11.

[0030] The pushing mechanism 32 is connected to the rupture mechanism 12 of the rupture device 1, or is integrated with the rupture mechanism 12.

[0031] The pushing mechanism 32 can be a pushing handle 32-1 integrally manufactured with the storage and protection mechanism 11 or the bladder breaking mechanism 12, or it can be a pushing device connected to the storage and protection mechanism 11 or the bladder breaking mechanism 12, or it can be a separately configured pushing device.

[0032] The capsule-rupturing device 1 is compressed within the sheath 31. The capsule-rupturing device 1, being compressed within the sheath 31, can be inserted into the eye through a small surgical incision along with the sheath 1. The capsule-rupturing device 1 is typically compressed at the tip of the sheath 31.

[0033] The sheath 31 has a puncture blade 31-1 at its front end. This blade 31-1 allows for easy puncture of ocular tissue, facilitating the delivery of the sheath 31 into the eye. This enables the sheath 31 to function as both a puncture device and a means of releasing and retrieving the capsule-breaking device 1. For ease of single-handed clinical operation, a handle 31-2 can be provided at the rear end of the sheath 31. Furthermore, the head of the sheath 31 can be made into various shapes such as round, oval, rectangular, and square to suit different clinical needs.

[0034] The cyst rupture device 100 is made of medical materials. Medical materials have better biocompatibility, which can better ensure the safety of clinical use.

[0035] When the capsule rupture device of this invention is manufactured, the capsule rupture device 1 and the motion control device 2 can be compressed inside the sheath 31. In clinical use, the sheath 31 is inserted into the eye through a small surgical incision. Pushing the pushing mechanism 32, the capsule rupture device 1 and the motion control device 2 are pushed into the eye. Under the action of the forming mechanism 4, which is composed of the storage and protection mechanism 11 or the capsule rupture mechanism 12, the capsule rupture device 1 unfolds and takes shape. Under the action of the motion control device 2, the cutting edge 12-1 of the capsule rupture mechanism 12 extends and cuts the capsule. After cutting, the capsule rupture device of this invention is withdrawn, and the cut capsule can be easily removed with surgical forceps, forming a perfectly round, centered capsule cap notch, facilitating subsequent phacoemulsification and lens removal operations.

[0036] The capsule rupture device of this invention comprises a capsule rupture device 1, a motion control device 2, and a delivery device 3. The capsule rupture device 1 is disposed within the delivery device 3, and the motion control device 2 controls the movement of the capsule rupture device 1, which ruptures the capsule membrane. The delivery device 3 can enter the eye through a small surgical incision, pushing the pushing mechanism 32. The capsule rupture device 1 and the motion control device 2 are pushed into the eye. Under the action of the forming mechanism 4, which is composed of the storage and protection mechanism 11 or the capsule rupture mechanism 12, the capsule rupture device 1 unfolds and takes shape. Under the action of the motion control device 2, the cutting edge 12-1 of the capsule rupture mechanism 12 extends and cuts the capsule membrane. The self-forming function of the forming mechanism 4 allows the capsule rupture device of this invention to automatically form a perfectly round capsule cap after entering the eye, eliminating the need for clinicians to manually tear it into a circle based on experience, making clinical use more convenient and significantly shortening the capsule rupture time. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the capsule-breaking device of the present invention, which is magnetically controlled and housed in a sheath.

[0038] Figure 1-1 yes Figure 1 Top view.

[0039] Figure 1-2 yes Figure 1-1 AA sectional view.

[0040] Figure 2 yes Figure 1 A three-dimensional structural diagram of the rupture device as it is pushed out.

[0041] Figure 2-1 yes Figure 2 The main view.

[0042] Figure 2-2 yes Figure 2 Top view.

[0043] Figure 2-3 yes Figure 2-2 BB cross-sectional view.

[0044] Figure 2-4 yes Figure 2 Exploded view.

[0045] Figure 3 yes Figure 2 A three-dimensional structural diagram of the rupture mechanism when the cutting edge is exposed.

[0046] Figure 3-1 yes Figure 3 Enlarged view of point C.

[0047] Figure 3-2 yes Figure 3 DD sectional view.

[0048] Figure 4 This is a three-dimensional structural diagram of the capsule rupture device of the present invention, which is controlled by a drag-type mechanism and housed in a sheath.

[0049] Figure 4-1 yes Figure 4 A three-dimensional structural diagram of the rupture device as it is pushed out.

[0050] Figure 4-2 yes Figure 4 Exploded view.

[0051] Figure 5 This is a three-dimensional structural diagram of the capsule rupture device of the present invention, which includes a motion guide rail and is controlled by a drag-and-drop mechanism.

[0052] Figure 5-1 yes Figure 5 A three-dimensional structural diagram of the rupture mechanism after it slides down the motion guide rail.

[0053] Figure 5-2 yes Figure 5-1 Enlarged view of point E.

[0054] Figure 5-3 yes Figure 5 Exploded view.

[0055] Figure 6 This is a three-dimensional structural diagram of the capsule rupture device of the present invention, which is controlled by a lifting mechanism and housed in a sheath.

[0056] Figure 6-1 yes Figure 6 A three-dimensional structural diagram of the rupture device when the blade is pushed out with the blade facing upwards.

[0057] Figure 6-2 yes Figure 6 A three-dimensional structural diagram of the capsule-rupturing device when it is pushed out with the blade facing downwards.

[0058] Figure 6-3 yes Figure 6-2 FF sectional view.

[0059] Figure 6-4 yes Figure 6 Exploded view.

[0060] Figure 6-5 yes Figure 6-4 Enlarged view of point G.

[0061] In the above figure:

[0062] 100 is the capsule rupture device of the present invention.

[0063] 1 is the capsule breaking device, 2 is the motion control device, 3 is the delivery device, and 4 is the forming mechanism.

[0064] 11 is a storage and protection mechanism, 11-1 is a ring-shaped storage and protection mechanism, 11-2 is a limiting mechanism, 11-3 is a storage slot, 11-4 is a fixing spring, 11-5 is a moving slide, 11-6 is a moving guide rail, 11-7 is a lifting slide; 11-21 is a limiting slot.

[0065] 12 is the capsule-breaking mechanism, 12-1 is the cutting edge, 12-2 is the annular capsule-breaking mechanism, 12-3 is the cutting part, and 12-4 is the connecting part.

[0066] 21 is a magnetic control device, and 21-1 is a magnetic pole.

[0067] 22 is a mechanical control device, 22-1 is a towing control device, 22-2 is a lifting control device, 22-1-1 is a pull cable, 22-2-1 is a lifting mechanism, 22-2-11 is a fixed slider, and 22-2-12 is a control line.

[0068] 31 is the sheath, 32 is the pushing mechanism, 31-1 is the piercing blade, 31-2 is the grip handle, and 32-1 is the pushing handle. Detailed Implementation

[0069] Example 1: The capsule rupture device of the present invention controlled by magnetic motion

[0070] refer to Figures 1 to 3-2 In this embodiment, the capsule rupturer 100 includes a capsule rupture device 1, a motion control device 2, a delivery device 3, and a forming mechanism 4.

[0071] refer to Figure 1 The capsule-rupturing device 1 is disposed within the delivery device 3; the motion control device 2 controls the movement of the capsule-rupturing device 1, and the capsule-rupturing device 1 performs capsule-rupturing treatment on the capsule membrane; the delivery device 3 can enter the eye through a small surgical incision.

[0072] refer to Figure 2 The forming mechanism 4 has a self-forming function.

[0073] Since the capsule-breaking device 1 is placed between the anterior capsule and the iris after entering the eye, the height of the capsule-breaking device 1 does not exceed 2 mm and is usually controlled within 1 mm.

[0074] refer to Figure 2 and Figure 2-4 The capsule-breaking device 1 includes a storage and protection mechanism 11 and a capsule-breaking mechanism 12.

[0075] refer to Figure 2 and Figure 3 In this embodiment, the storage and protection mechanism 11 is a ring-shaped storage and protection mechanism 11-1 made of shape memory alloy. The ring-shaped storage and protection mechanism 11-1 has an automatic forming function and constitutes the forming mechanism 4. Relying on the shape memory function of the shape memory alloy, after entering the eye, under the action of body temperature, the ring-shaped storage and protection mechanism 11-1 can quickly restore to the preset shape. Therefore, any different cap shape can be set as needed.

[0076] The annular storage and protection mechanism 11-1 can also be made of other elastic materials. Under external force, the annular storage and protection mechanism 11-1 can deform and be housed within the sheath 31 of the delivery device 31. After the external force is released, the annular storage and protection mechanism 11-1 can return to its annular state. Therefore, the annular storage and protection mechanism 11-1 can have a self-forming function, constituting the forming mechanism 4. The elastic material can be any shaped elastic material such as elastic polymer materials or elastic metal materials.

[0077] refer to Figure 2 and Figure 3-1 In this embodiment, the annular storage and protection mechanism 11-1 includes a limiting mechanism 11-2, a storage groove 11-3, and a fixing spring 11-4. The fixing spring 11-4 fixes the capsule-breaking mechanism 12 within the storage groove 11-3. The limiting mechanism 11-2 is a limiting groove 11-21, which controls the movement stroke of the capsule-breaking mechanism 12 and prevents excessive movement of the capsule-breaking mechanism 12 from causing accidental damage to surrounding tissues. Typically, the movement depth of the capsule-breaking mechanism 12 is 0.3mm-1mm, and the cutting depth is generally best controlled between 0.3-0.5mm.

[0078] The limiting mechanism 11-2 can also be a limiting spring and / or a limiting block. The applicant has only listed the above three limiting methods here. In practical applications, those skilled in the art can design limiting mechanisms with different structures as needed, or use a combination of multiple limiting mechanisms to achieve the limiting function. The applicant will not give examples of each one here, but none of them depart from the protection scope of this application.

[0079] The storage and protection mechanism 11 has a smooth outer surface. The smooth outer surface of the storage and protection mechanism 11 can play a good protective role and effectively prevent the storage and protection mechanism 11 from causing accidental damage to surrounding tissues.

[0080] refer to Figure 3-2 The capsule-breaking mechanism 12 includes a cutting edge 12-1. The motion control device 2 can control the movement of the capsule-breaking mechanism 12. When the cutting edge 12-1 extends out from the storage and protection mechanism 11, it can perform capsule-breaking treatment on the capsule membrane.

[0081] When not performing cyst rupture, the cutting edge 12-1 of the rupture mechanism 12 is retracted within the storage and protection mechanism 11 to prevent accidental damage to surrounding tissues. When rupture is required, the rupture mechanism 12 moves under the action of the motion control device 2, and the cutting edge 12-1 extends from the storage and protection mechanism 11 to rupture the capsule. The inclusion of the storage and protection mechanism 11 enhances clinical safety.

[0082] refer to Figure 1-2 and Figure 3-2 In this embodiment, the motion control device 2 is a magnetic control device 21. The magnetic control device 21 consists of two pairs of magnetic poles 21-1.

[0083] The capsule-breaking mechanism 12 is a ring-shaped capsule-breaking mechanism 12-2 made of ferromagnetic elastic material, which constitutes one pair of magnetic poles 21-1 of the magnetic control device 21. The other pair of magnetic poles 21-1 is located outside the eye.

[0084] When the like poles of the two pairs of magnetic poles 21-1 approach each other, the fixing action of the fixing spring 11-4 is released under the action of magnetic force. The annular capsule-breaking mechanism 12-2 moves downward along the limiting groove 11-21, and the cutting edge 12-1 is pushed out to cut the capsule membrane. After the cutting is completed, the magnetic poles of the magnetic poles 21-1 located outside the eye are flipped, and the two pairs of magnetic poles 21-1 become opposite magnetic poles. Under the attraction, the annular capsule-breaking mechanism 12-2 moves upward, and the cutting edge 12-1 of the capsule-breaking mechanism 12 retracts.

[0085] refer to Figure 2-4The delivery device 3 includes a sheath 31 and a pushing mechanism 32. In this embodiment, the pushing mechanism 32 is a pushing handle 32-1 integrally manufactured with the annular storage and protection mechanism 11-1. The sheath 31 has a puncture blade 31-1 at its front end and a grip handle 31-2 at its rear end, which allows for one-handed operation during clinical application. The puncture blade 31-1 can easily puncture ocular tissue, facilitating the delivery of the sheath 31 into the eye, thus enabling the sheath 31 to have both puncture and release / receive functions for the capsule-breaking device 1. Furthermore, the head of the sheath 31 can be made into various shapes such as round, oval, rectangular, and square to suit different clinical needs.

[0086] In practical applications, the pushing mechanism 32 can be a pushing handle 32-1 integrally manufactured with the storage and protection mechanism 11 or the bladder breaking mechanism 12, or it can be a pushing device connected to the storage and protection mechanism 11 or the bladder breaking mechanism 12, or it can be a separately configured pushing device.

[0087] The cyst rupture device 100 is made of medical materials. Medical materials have better biocompatibility, which can better ensure the safety of clinical use.

[0088] refer to Figures 1 to 1-2 When the product is assembled, the annular rupture mechanism 12-2 is housed in the storage groove 11-3 of the annular storage and protection mechanism 11-1 and is fixed by the fixing spring 11-4. The annular storage and protection mechanism 11-1 is arranged in a straight line inside the sheath tube 31, and the push handle 32-1 is exposed outside the sheath tube 31.

[0089] refer to Figures 2 to 2-3 In clinical use, the delivery sheath 31 is delivered into the eye through a surgical incision. The push handle 32-1 is pushed out, and the annular storage and protection mechanism 11-1 is pushed out. Under the influence of intraocular temperature, the annular storage and protection mechanism 11-1 returns to a set perfect circle or other shape through the shape memory function of the shape memory alloy.

[0090] refer to Figures 3 to 3-2Then, the same-pole magnetic pole of the magnetic pole 21-1 located outside the eye is brought close to the eye. Under the pushing force of the magnetic force, the fixing action of the fixing spring 11-4 is released, and the annular capsule-rupturing mechanism 12-2 moves downward along the limiting groove 11-21. The cutting edge 12-1 is pushed out to cut the capsule. After cutting, the magnetic poles of the magnetic pole 21-1 located outside the eye are flipped, and the two pairs of magnetic poles 21-1 become opposite magnetic poles. Under the attraction, the annular capsule-rupturing mechanism 12-2 moves upward, and the cutting edge 12-1 of the capsule-rupturing mechanism 12 retracts. Pulling the push handle 32-1 backward, the capsule-rupturing device 1 is retracted into the sheath 31, and the capsule rupturer of this embodiment can be removed. Because of the limiting groove 11-21, the height to which the cutting edge 12-1 is pushed out can be set with a safety limit to prevent accidental damage to the lower tissues.

[0091] In this embodiment, the forming mechanism 4 is composed of the storage and protection mechanism 11 made of shape memory alloy. In practical applications, the forming mechanism 4 can also be composed of the storage and protection mechanism 11 or the capsule-breaking mechanism 12 made of elastic material, or it can be a mechanical structure that can achieve a predetermined shape under the action of external forces, such as mechanical force or magnetic field. The self-forming function of the forming mechanism 4 allows the capsule-breaking device of the present invention to automatically form a perfectly round capsule cap after entering the eye, eliminating the need for clinicians to manually tear it into a circle based on experience, making clinical use more convenient. The best shape of the forming mechanism 4 is a perfect circle, with a diameter typically between 3-12 mm, and around 6 mm being ideal.

[0092] In this embodiment, the delivery device 3 can enter the eye through a small surgical incision, pushing the pushing mechanism 32. The capsule-breaking device 1 and the motion control device 2 are pushed into the eye. Under the action of the forming mechanism 4, which is composed of the storage and protection mechanism 11 or the capsule-breaking mechanism 12, the capsule-breaking device 1 unfolds and takes shape. Under the action of the motion control device 2, the cutting edge 12-1 of the capsule-breaking mechanism 12 extends and cuts the capsule. The self-forming function of the forming mechanism 4 allows the capsule-breaking device in this embodiment to automatically form a perfectly round capsule cap after entering the eye, eliminating the need for clinicians to manually tear it into a circle based on experience, making clinical use more convenient. Moreover, the magnetic control method only requires the capsule-breaking mechanism 12 to be made of ferromagnetic material, without the need for additional auxiliary motion control design, resulting in a very simple structure.

[0093] Example 2: The capsule rupture device of the present invention with drag-type motion control.

[0094] refer to Figures 4 to 5-3 The difference between this embodiment and embodiment 1 is that in this embodiment, the motion control device 2 is a mechanical control device 22.

[0095] In this embodiment, the mechanical control device 22 is a towed control device 22-1.

[0096] The storage and protection mechanism 11 is a ring-shaped storage and protection mechanism 11-1 made of elastic material. Under the action of external force, the ring-shaped storage and protection mechanism 11-1 is compressed and deformed. After the external force is removed, the ring-shaped storage and protection mechanism 11-1 returns to its original shape. The ring-shaped storage and protection mechanism 11-1 constitutes the forming mechanism 4. The ring-shaped storage and protection mechanism 11-1 is provided with a storage groove 11-3 and a movement slide 11-5.

[0097] refer to Figures 4 to 4-2 The capsule-breaking mechanism 12 is made of shape memory alloy and includes a cutting part 12-3 and a connecting part 12-4. The cutting part 12-3 has a cutting edge 12-1. The connecting part 12-4 is disposed in the receiving groove 11-3, and the cutting part 12-3 is embedded in the moving slide groove 11-5. The connecting part 12-4 can drive the cutting part 12-3 to move along the moving slide groove 11-5.

[0098] The towing control device 22-1 includes a pull wire 22-1-1, and the pull wire 22-1-1 and the connecting part 12-4 of the rupture mechanism 12 are made into one unit.

[0099] The delivery device 3 includes a sheath 31 and a pushing mechanism 32. The pushing mechanism 32 and the annular storage and protection mechanism 11-1 are manufactured as a whole, and the distal end forms a pushing handle 32-1.

[0100] refer to Figures 5 to 5-3 To facilitate the movement of the cutting part 12-3, a motion guide rail 11-6 can be provided at the end of the motion groove 11-5, so that the cutting part 12-3 can slide into the motion groove 11-5 along the motion guide rail 11-6 and be retracted into the sheath tube 31 along the motion guide rail 11-6.

[0101] refer to Figure 4 When the product is assembled, the capsule breaking mechanism 12 is installed on the annular storage and protection mechanism 11-1 and is compressed together with the annular storage and protection mechanism 11-1 inside the sheath tube 31, while the pull wire 22-1-1 is exposed outside the sheath tube 31.

[0102] refer to Figure 4-1 , Figures 5 to 5-2In clinical use, the sheath 31 is inserted into the eye through a surgical incision. Pushing the push handle 32-1 extends and unfolds the annular storage and protection mechanism 11-1. Once fully extended, the cutting portion 12-3 of the capsule-breaking mechanism 12 is pushed out of the sheath 31 and returns to a perpendicular position between the cutting edge 12-1 and the movement groove 11-5 of the annular storage and protection mechanism 11-1. Pulling the pull wire 22-1-1 moves the cutting portion 12-3 along the movement groove 11-5, allowing the cutting edge 12-1 to cut the capsule. After cutting, continuing to pull the pull wire 22-1-1 moves the cutting portion 12-3 along the movement guide 11-6, retracting it into the sheath 31. Pulling the push handle 32-1 backward retracts the annular storage and protection mechanism 11-1 into the sheath 31. Once the sheath 31 is removed, the capsule rupturer in this embodiment is removed from the eye.

[0103] In this embodiment, the cutting edge 12-1 can easily cut the capsule into the required shape by moving one circle along the motion groove 11-5. Moreover, the cutting process can be observed in real time during operation, and the angle can be adjusted as needed, which is very convenient for clinical application.

[0104] Example 3: The capsule rupture device of the present invention with lifting motion control.

[0105] refer to Figures 6 to 6-5 The difference between this embodiment and embodiment 2 is that in this embodiment, the motion control device 2 is a lifting control device 22-2.

[0106] refer to Figure 6 and Figure 6-4 The lifting control device 22-2 includes a lifting mechanism 22-2-1. In this embodiment, the lifting mechanism 22-2-1 includes one fixed slider 22-2-11 and two control lines 22-2-12.

[0107] refer to Figure 6-1 and Figure 6-2 The cyst-rupturing mechanism 12 is an annular cyst-rupturing mechanism 12-2 made of elastic material, and the fixed slider 22-2-11 is disposed on one side of the cyst-rupturing mechanism 12.

[0108] refer to Figure 6-5 One of the control lines 22-2-12 is connected to the fixed slider 22-2-11, and the other control line 22-2-12 is directly connected to the other side of the annular rupture mechanism 12-2.

[0109] The storage and protection mechanism 11 is a ring-shaped storage and protection mechanism 11-1 made of elastic material. Under the action of external force, the ring-shaped storage and protection mechanism 11-1 is compressed and deformed. After the external force is removed, the ring-shaped storage and protection mechanism 11-1 returns to its original shape. The ring-shaped storage and protection mechanism 11-1 constitutes the forming mechanism 4. The ring-shaped storage and protection mechanism 11-1 is provided with a lifting slide groove 11-7, and the fixed slider 22-2-11 is disposed on the lifting slide groove 11-7 and can move back and forth along the lifting slide groove 11-7.

[0110] refer to Figure 6-4 The annular storage and protection mechanism 11-1 and the pushing mechanism 32 are manufactured as a whole, and the pushing mechanism 32 is provided with a pushing handle 32-1 at its distal end.

[0111] refer to Figure 6 When the product is assembled, the annular rupture mechanism 12-2 is housed in the annular housing protection mechanism 11-1 and compressed together with the front end of the sheath tube 31, while the two control lines are exposed outside the sheath tube 31.

[0112] refer to Figure 6-1 In clinical use, pushing the pushing mechanism 32 pushes out the cyst-breaking device 1, and the annular storage and protection mechanism 11-1 and the annular cyst-breaking mechanism 12-2 unfold and take shape.

[0113] refer to Figure 6-2 and Figure 6-3 Pulling the control line 22-2-12 directly connected to the annular rupture mechanism 12-2 causes the fixed slider 22-2-11 to slide down along the lifting groove 11-7, and the cutting edge 12-1 of the annular rupture mechanism 12-2 extends out to cut the cyst membrane.

[0114] After cutting, pull the control line 22-2-12 connected to the fixed slider 22-2-11. The fixed slider 22-2-11 rises along the lifting groove 11-7, and the annular capsule-rupturing mechanism 12-2 is retracted into the storage groove 11-3 of the annular storage and protection mechanism 11-1. Pull the push handle 32-1 outward, and the annular storage and protection mechanism 11-1 and the annular capsule-rupturing mechanism 12-2 stored in the storage groove 11-3 are compressed and retracted into the sheath 31, allowing the capsule rupturer 100 to be removed from the eye. Then, use surgical forceps to remove the cut capsule membrane, completing the capsule tearing process.

[0115] In this embodiment, a sliding groove lifting method is used to control the lifting motion of the cyst-rupturing mechanism 12. In clinical use, the cutting depth of the cyst-rupturing mechanism 12 can be controlled in real time as needed, making clinical application safer.

[0116] The applicant has only specifically illustrated two specific lifting structures: towing and lifting. In practical applications, the mechanical control device 22 can also be a rocker arm, rotation, or other control methods. The applicant will not provide examples of each of these, but they all fall within the scope of protection of this application.

[0117] It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments described herein are not the only structures for implementing the present invention. Although preferred embodiments of the present invention have been described and illustrated herein, those skilled in the art will understand that these embodiments are merely illustrative, and those skilled in the art can make numerous variations, modifications, and substitutions without departing from the present invention. Therefore, the scope of protection of the present invention should be defined in accordance with the spirit and scope of the appended claims.

Claims

1. A capsule rupture device, wherein the capsule rupture device (100) is characterized in that: A. The cyst rupture device (100) includes a cyst rupture device (1), a motion control device (2), and a delivery device (3); the cyst rupture device (1) is disposed within the delivery device (3); B. The capsule-breaking device (1) includes a storage and protection mechanism (11) and a capsule-breaking mechanism (12). The capsule-breaking mechanism (12) is disposed inside the storage and protection mechanism (11). The capsule-breaking mechanism (12) includes a cutting edge (12-1). The motion control device (2) can control the movement of the capsule-breaking mechanism (12). When the cutting edge (12-1) extends out from the storage and protection mechanism (11), it can perform capsule-breaking treatment on the capsule membrane. C. The storage and protection mechanism (11) is a ring-shaped storage and protection mechanism (11-1) made of elastic material, and the ring-shaped storage and protection mechanism (11-1) has an automatic forming function; or the bladder breaking mechanism (12) is a ring-shaped bladder breaking mechanism (12-2) made of elastic material, and the ring-shaped bladder breaking mechanism (12-2) has an automatic forming function. D. The motion control device (2) controls the movement of the cyst-breaking device (1), and the cyst-breaking device (1) performs cyst-breaking treatment on the cyst membrane; E. The delivery device (3) includes a sheath (31) and a pushing mechanism (32), and the delivery device (3) can enter the eye through a small surgical incision.

2. The capsule rupture device according to claim 1, characterized in that: The ring-shaped storage and protection mechanism (11-1) is made of shape memory alloy.

3. The capsule rupture device according to claim 1, characterized in that: The annular rupture mechanism (12-2) is made of shape memory alloy.

4. The capsule rupture device according to claim 1, characterized in that: The storage and protection mechanism (11) is equipped with a limiting mechanism (11-2).

5. The capsule rupture device according to claim 4, characterized in that: The limiting mechanism (11-2) is a limiting groove, a limiting spring, or a limiting block.

6. The capsule rupture device according to claim 1, characterized in that: The storage and protection mechanism (11) has a smooth outer surface.

7. The capsule rupture device according to claim 1, characterized in that: The motion control device (2) is a magnetic control device (21) or a mechanical control device (22).

8. The capsule rupture device according to claim 7, characterized in that: The mechanical control device (22) is a towing control device (22-1) or a lifting control device (22-2).

9. The capsule rupture device according to claim 7, characterized in that: The magnetic control device (21) consists of two pairs of magnetic poles (21-1); one pair of magnetic poles (21-1) is disposed on the capsule-breaking mechanism (12), and the other pair of magnetic poles (21-1) is disposed outside the eye; when the magnetic poles of the same polarity approach each other, under the action of magnetic force, the cutting edge (12-1) of the capsule-breaking mechanism (12) is pushed out to cut the capsule membrane; When opposite magnetic poles approach each other, the blade (12-1) of the capsule-breaking mechanism (12) is retracted under the action of magnetic force.

10. The capsule rupture device according to claim 8, characterized in that: The drag-type control device (22-1) includes a pull wire (22-1-1), which is connected to the capsule breaking mechanism (12). When the pull wire (22-1-1) is pulled, the cutting edge (12-1) of the capsule breaking mechanism (12) is exposed, and pulling the pull wire (22-1-1) can drive the cutting edge (12-1) to move along the storage and protection mechanism (11) to cut the capsule membrane.

11. The capsule rupture device according to claim 8, characterized in that: The lifting control device (22-2) includes a lifting mechanism (22-2-1), which is connected to the cyst-breaking mechanism (12). By controlling the lifting mechanism (22-2-1), the cyst-breaking mechanism (12) moves up and down. When the lifting mechanism (22-2-1) moves downward, the cutting edge (12-1) of the cyst-breaking mechanism (12) is exposed and cuts the cyst membrane. When the lifting mechanism (22-2-1) moves upward, the cutting edge (12-1) of the cyst-breaking mechanism (12) retracts.

12. The capsule rupture device according to claim 1, characterized in that: The pushing mechanism (32) is connected to the storage and protection mechanism (11) of the rupture device (1) or is integrated with the storage and protection mechanism (11).

13. The capsule rupture device according to claim 1, characterized in that: The pushing mechanism (32) is connected to the rupture mechanism (12) of the rupture device (1) or is integrated with the rupture mechanism (12).

14. The capsule rupture device according to claim 1, characterized in that: The rupture device (1) is compressed inside the sheath (31).

15. The capsule rupture device according to claim 1, characterized in that: The front end of the sheath (31) is provided with a puncture blade (31-1).

16. The capsule rupture device according to claim 1, characterized in that: The cyst rupture device (100) is made of medical materials.

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