Surgical scissors for incising anterior capsule of lens

Abstract

These surgical scissors for incising the anterior capsule of a lens comprises: first and second levers extending in the front-rear direction; and a rotary shaft rotatably connecting the first and second levers to each other. The first lever includes: a first handle which is formed on a rear portion with respect to the rotary shaft; and a first blade which has a first non-cutting part that is formed in a front portion with respect to the rotary shaft and extends forward, and a first cutting part that protrudes from the front end of the first non-cutting part in one direction that intersects the front-rear direction and the vertical direction. The second lever includes: a second handle which is formed on the rear portion with respect to the rotary shaft and is able to be separated downward from the first handle; and a second blade which has a second non-cutting part that is formed on the front portion with respect to the rotary shaft and extends forward, and a second cutting part that protrudes in one direction from the front end of the second non-cutting part and is configured to come into contact with the first cutting part.

Description

Surgical scissors for incision of the anterior capsule of the lens

[0001] The present disclosure relates to surgical scissors for incision of the anterior capsule of the crystalline lens.

[0002] The transparent lens within the human eye plays a crucial role in focusing our vision. This transparent lens can become cloudy with age, inflammation, or trauma. This can lead to the development of cataracts, a type of ophthalmic disease. If cataracts progress to the point where they interfere with daily life, surgery may be necessary, as medications do not alleviate the symptoms.

[0003] Cataract surgery is performed by making a small hole in the sclera or white of the eye, inserting an ultrasound instrument into the hole to aspirate the cataractous lens, and then inserting a permanent artificial lens in its place. Specifically, the cornea is incised, a viscoelastic material with a specific viscosity is injected between the cornea and the lens, and a continuous curvilinear capsulorrhexis (CCC) is made in the anterior capsule, which is located in the front of the lens capsule. During this process, the viscoelastic material is injected between the cornea and the lens, creating a space for the insertion of surgical instruments or an artificial lens. As the viscoelastic material is injected through the incised opening in the anterior capsule, the cataractous lens is aspirated using ultrasound. During this process, the viscoelastic material prevents the lens capsule from shrinking due to water loss caused by the incision and helps maintain a certain shape. Afterwards, an artificial lens is inserted and attached to the lens capsule, becoming fixed in place. The viscoelastic material may be aspirated and removed before or after the artificial lens is inserted.

[0004] Because the lens capsule is composed of fiber, it tends to shrink over time. If the opening formed in the anterior capsule is located toward the periphery rather than the center, the force of contraction of the lens capsule will be uneven, potentially causing the implanted artificial lens to warp. Therefore, the anterior capsule must be incised so that the opening is centered, requiring additional incisions to create a nearly circular shape.

[0005] However, since the cutting part of the conventional cutting scissors has a straight shape, the direction in which the cutting scissors enter (e.g., the approximate outer radius direction of the opening) and the direction in which the cutting scissors should be cut (e.g., the approximate circumference direction of a circular opening) are almost perpendicular. Therefore, it is very difficult to additionally cut the edge of the opening into a shape close to a circle. In some cases, a straight wound may be formed outside the cutting direction, or the incision may be larger than the opening that should be cut. As a result, the position of the artificial lens may shift or the shape of the artificial lens may be deformed.

[0006] Embodiments of the present disclosure improve or resolve at least some of the problems of conventional straight-line incision scissors. To this end, a plurality of embodiments provide surgical scissors for anterior capsulorhexis of the crystalline lens, including a first cutting portion and a second cutting portion arranged transversely to the direction of entry of the incision scissors.

[0007] Embodiments according to one aspect of the present disclosure relate to surgical scissors for anterior capsulotomy of a crystalline lens. In an exemplary embodiment, surgical scissors for anterior capsulotomy of a crystalline lens include a first lever extending in the anterior-posterior direction; a second lever extending in the anterior-posterior direction; and a rotational axis rotatably connecting the first lever and the second lever. The first lever includes a first handle formed at a posterior portion with respect to the rotational axis; and a first blade having a first non-cutting portion formed at an anterior portion with respect to the rotational axis and extending forward, and a first cutting portion protruding in one direction transverse to the anteroposterior and up-down directions from a front end of the first non-cutting portion. The second lever includes a second handle formed at a posterior portion with respect to the rotational axis and capable of being spaced downward from the first handle; and a second blade having a second non-cutting portion formed at an anterior portion with respect to the rotational axis and extending forward, and a second cutting portion protruding in one direction from a front end of the second non-cutting portion and configured to contact the first cutting portion. When the second lever is rotated relative to the first lever so that the first handle and the second handle come closer to each other in the vertical direction, the first cutting portion and the second cutting portion are configured to incise the anterior sac.

[0008] In one embodiment, the first cutting portion may have a first cutting edge at an upper portion, and the second cutting portion may have a second cutting edge at a lower portion configured to contact the first cutting edge.

[0009] In one embodiment, the first cutting portion may include a first flat surface which is a front surface of the first cutting portion, and the second cutting portion may include a second flat surface which is a rear surface of the second cutting portion.

[0010] In one embodiment, when the first cutting portion and the second cutting portion are in contact, the first flat surface and the second flat surface can be in contact on the same plane.

[0011] In one embodiment, the first flat surface and the second flat surface can extend in a direction between the downward direction and the rearward direction.

[0012] In one embodiment, when the first cutting portion and the second cutting portion are in contact with each other, the first cutting portion may be positioned rearward with respect to the second cutting portion, and the first non-cutting portion may be positioned in one direction with respect to the second non-cutting portion.

[0013] In one embodiment, the device may further include a stopper coupled to the first handle or the second handle and configured to maintain a minimum separation distance between the first handle and the second handle.

[0014] In one embodiment, the first lever may include a first elastic member extending rearward from a rear end of the first handle, and the second lever may include a second elastic member extending rearward from a rear end of the second handle. The rear end of the first elastic member and the rear end of the second elastic member may be connected to each other so that the first elastic member is elastically bent and deformed convexly upward, and the second elastic member is elastically bent and deformed convexly downward.

[0015] In one embodiment, the first lever includes a first rotational axis support portion having a rotational axis positioned between the first handle and the first non-cutting portion, and the first non-cutting portion can extend forwardly from a lower portion of the first rotational axis support portion. The second lever further includes a second rotational axis support portion having a rotational axis positioned between the second handle and the second non-cutting portion, and the second non-cutting portion can extend forwardly from an upper portion of the second rotational axis support portion.

[0016] According to the surgical scissors for anterior capsule incision of a lens according to various embodiments of the present disclosure, the direction of incision of the anterior capsule of the lens cut by the first cutting portion and the second cutting portion is a direction that crosses the entry direction of the first lever and the second lever. Therefore, it becomes easy to additionally incise the opening formed in the anterior capsule of the lens to be close to a circle. As a result, the anterior capsule of the lens can be induced to contract more uniformly into a circle, and the phenomenon of the position of the artificial lens being shifted or the shape of the artificial lens being deformed can be prevented.

[0017] FIG. 1 is a perspective view illustrating surgical scissors for anterior capsule incision of a lens according to one embodiment of the present disclosure.

[0018] Figure 2 is a perspective view of the surgical scissors for incising the anterior capsule of the lens illustrated in Figure 1 from a different angle, with the rear ends of the first lever and the second lever separated.

[0019] Figure 3 is an exploded perspective view showing the surgical scissors for incising the anterior capsule of the lens illustrated in Figure 2.

[0020] Figure 4 is a plan view showing an enlarged view of the first blade illustrated in Figure 3.

[0021] Figure 5 is a plan view showing an enlarged view of the second blade illustrated in Figure 3.

[0022] Figure 6 is a front view showing the first and second blades illustrated in Figure 2 in an enlarged manner.

[0023] Figure 7 is a perspective view showing the first and second blades illustrated in Figure 2 from different angles.

[0024] Figure 8 is a front view showing an enlarged view of the first blade illustrated in Figure 3.

[0025] Figure 9 is a front view showing an enlarged view of the second blade illustrated in Figure 3.

[0026] The embodiments of this disclosure are provided for the purpose of illustrating the technical concepts of this disclosure. The scope of rights under this disclosure is not limited to the embodiments presented below or the specific descriptions of these embodiments.

[0027] All technical and scientific terms used in this disclosure, unless otherwise defined, have the meanings commonly understood by those of ordinary skill in the art to which this disclosure pertains. All terms used in this disclosure have been selected for the purpose of more clearly explaining this disclosure and are not intended to limit the scope of rights under this disclosure.

[0028] Expressions such as “including,” “comprising,” “having,” and the like used in this disclosure should be understood as open-ended terms that imply the possibility of including other embodiments, unless otherwise stated in the phrase or sentence in which the expression is included.

[0029] The singular forms described in this disclosure may include plural meanings unless otherwise stated, and the same applies to the singular forms described in the claims.

[0030] The expressions “first,” “second,” etc. used in this disclosure are used to distinguish between multiple components, and do not limit the order or importance of the components.

[0031] In this disclosure, when a component is referred to as being "connected" or "connected" to another component, it should be understood that the component can be directly connected or connected to the other component, or can be connected or connected via a new other component.

[0032] Directional indicators such as "front", "forward (FD)", etc. used in the present disclosure are based on the direction in which the first and second blades are positioned relative to the first and second handles in the attached drawings, and directional indicators such as "back", "rearward (RD)", etc. mean the opposite direction. In addition, directional indicators such as "upper", "upper side", "upper (UD)", etc. are based on the direction in which the first lever is positioned relative to the second lever in the attached drawings, and directional indicators such as "lower", "lower side", "downer (DD)", etc. mean the opposite direction. The first and second blades and the first and second handles or the first lever and the second lever shown in the attached drawings may be oriented differently, and these directional indicators may be interpreted accordingly.

[0033] Hereinafter, embodiments of the present disclosure will be described with reference to the attached drawings. In the attached drawings, identical or corresponding components are assigned the same reference numerals. Furthermore, in the description of the embodiments below, redundant descriptions of identical or corresponding components may be omitted. However, even if a description of a component is omitted, it is not intended that such component is not included in any embodiment.

[0034] FIG. 1 is a perspective view illustrating surgical scissors for anterior capsulotomy of a crystalline lens according to one embodiment of the present disclosure. FIG. 2 is a perspective view of the surgical scissors for anterior capsulotomy of a crystalline lens illustrated in FIG. 1 from a different angle, with the rear ends of the first lever and the second lever separated. FIG. 3 is an exploded perspective view illustrating the surgical scissors for anterior capsulotomy of a crystalline lens illustrated in FIG. 2 in an exploded state.

[0035] As illustrated in FIGS. 1 to 3, surgical scissors (1000) for anterior capsule incision of a crystalline lens according to one embodiment of the present disclosure (hereinafter, simply referred to as “surgical scissors”) include a first lever (100), a second lever (200), and a rotational shaft (300). The surgical scissors (1000) may be made of a metal material. In particular, the surgical scissors (1000) may be made of stainless steel or a titanium alloy to prevent corrosion.

[0036] The first lever (100) extends in the forward-backward direction (FD-RD) and includes a first handle (110) and a first blade (120). The first handle (110) and the first blade (120) constituting the first lever (100) may be formed integrally. The first lever (100) is configured such that the first handle (110) and the first blade (120) are positioned in opposite directions in the up-down direction (UD-DD) with respect to the rotation axis (300). For example, the first handle (110) may be positioned upward (UD) with respect to the rotation axis (300), and the first blade (120) may be positioned downward (DD) with respect to the rotation axis (300). Accordingly, when the first handle (110) moves from upward (UD) to downward (DD) around the rotation axis (300), the first blade (120) moves from downward (DD) to upward (UD) around the rotation axis (300). Conversely, when the first handle (110) moves from downward (DD) to upward (UD) around the rotation axis (300), the first blade (120) moves from upward (UD) to downward (DD) around the rotation axis (300).

[0037] The first handle (110) is formed at the rear portion based on the rotation axis (300) and extends rearward (RD). The first handle (110) is a portion that the practitioner's hand (e.g., thumb) is gripped. A plurality of first protrusions may be formed on at least a portion of the upper surface of the first handle (110) to prevent the practitioner's hand from slipping. The first protrusions may extend in a direction parallel to one direction (OD). The first protrusions are not limited to the embodiment illustrated in the drawing and may have various shapes or patterns.

[0038] Figure 4 is a plan view showing an enlarged view of the first blade illustrated in Figure 3.

[0039] As illustrated in FIG. 4, the first blade (120) has a first non-cutting portion (121) and a first cutting portion (122). The first non-cutting portion (121) is formed in the front portion with respect to the rotation axis (300) and extends forward (FD). The first non-cutting portion (121) is not directly used for incision of the anterior capsule of the crystalline lens, but connects the first handle (110) and the first cutting portion (122). The first cutting portion (122) protrudes in one direction (OD) from the front end of the first non-cutting portion (121). Here, the one-sided direction (OD) is a direction crossing the anteroposterior direction (FD-RD) and the up-down direction (UD-DD). For example, the one-sided direction (OD) may be set parallel to the rotation axis (300) as a direction perpendicular to the anteroposterior direction (FD-RD) and the up-down direction (UD-DD). The first cutting portion (122) may be positioned perpendicular to the first non-cutting portion (121). The first non-cutting portion (121) and the first cutting portion (122) may have an approximate L-shape. The first cutting portion (122) is directly used to cut the anterior capsule of the crystalline lens. The one-sided direction (OD) in which the first cutting portion (122) protrudes may point in the opposite direction to the direction illustrated in FIGS. 1 to 3 .

[0040] The second lever (200) extends in the forward-backward direction (FD-RD) and includes a second handle (210) and a second blade (220). The second handle (210) and the second blade (220) constituting the second lever (200) may be formed integrally. The second lever (200) is configured such that the second handle (210) and the second blade (220) are positioned in opposite directions in the up-down direction (UD-DD) with respect to the rotation axis (300). For example, the second handle (210) may be positioned downward (DD) with respect to the rotation axis (300), and the second blade (220) may be positioned upward (UD) with respect to the rotation axis (300). Accordingly, when the second handle (210) moves from downward (DD) to upward (UD) around the rotation axis (300), the second blade (220) moves from upward (UD) to downward (DD) around the rotation axis (300). Conversely, when the second handle (210) moves from upward (UD) to downward (DD) around the rotation axis (300), the second blade (220) moves from downward (DD) to upward (UD) around the rotation axis (300).

[0041] The second handle (210) is formed at the rear portion based on the rotation axis (300) and extends rearward (RD). The second handle (210) is configured to be spaced downward from the first handle (110). The second handle (210) is a portion that the practitioner's hand (e.g., index and / or middle finger) is gripped. A plurality of second protrusions may be formed on at least a portion of the lower surface of the second handle (210) to prevent the practitioner's hand from slipping. The second protrusions may extend in a direction parallel to one direction (OD). The second protrusions are not limited to the embodiment illustrated in the drawing and may have various shapes or patterns.

[0042] Figure 5 is a plan view showing an enlarged view of the first blade illustrated in Figure 3.

[0043] As illustrated in FIG. 5, the second blade (220) has a second non-cutting portion (221). The second non-cutting portion (221) is formed at the front portion with respect to the rotation axis (300) and extends forward (FD). The second non-cutting portion (221) is not directly used for cutting the anterior capsule of the crystalline lens, but connects the second handle (210) and the second cutting portion (222). The second cutting portion (222) is configured to protrude in one direction (OD) from the front end of the second non-cutting portion (221) and to contact the first cutting portion (122). The second cutting portion (222) can be arranged perpendicularly to the second non-cutting portion (221). The second cutting portion (222) protrudes in the same one-sided direction (OD) as the first cutting portion (122). The second non-cutting portion (221) and the second cutting portion (222) may have a roughly L-shape. The second cutting portion (222) is directly used to cut the anterior capsule of the crystalline lens. The one-sided direction (OD) in which the second cutting portion (222) protrudes may point in the opposite direction to the direction illustrated in FIGS. 1 to 3 .

[0044] The rotation shaft (300) rotatably connects the first lever (100) and the second lever (200). For example, the rotation shaft (300) may be configured such that one end is fixed to one of the first lever (100) and the second lever (200), and the other end is rotatable relative to the other of the first lever (100) and the second lever (200). As another example, the rotation shaft (300) may be configured such that it is rotatable relative to both the first lever (100) and the second lever (200) by forming a catch portion having a larger diameter than the rotation shaft (300) at both ends so as not to be separated from the first lever (100) and the second lever (200). In the following description, the description will be centered on the configuration in which one end of the rotation shaft (300) is fixed to the second lever (200), and the other end of the rotation shaft (300) is inserted into a hole (141) (see FIG. 3) formed in the first lever (100) so as to be rotatable with respect to the first lever (100).

[0045] When the second lever (200) rotates with respect to the first lever (100) about the rotation axis (300) so that the first handle (110) and the second handle (210) come closer to each other in the up-down direction (UD-DD), the first cutting part (122) and the second cutting part (222) are configured to contact each other and cut the anterior capsule. In this way, the cutting direction (i.e., one-sided direction (OD)) of the anterior capsule of the lens cut by the first cutting part (122) and the second cutting part (222) is perpendicular to the entry direction (i.e., anterior (FD)) of the first lever (100) and the second lever (200). Therefore, it becomes easy to additionally cut an opening formed in the anterior capsule of the lens into a shape close to a circle. As a result, since the anterior capsule of the lens is uniformly contracted into a circle, the position of the artificial lens does not move or the shape of the artificial lens does not change.

[0046] As illustrated in FIG. 3, in one embodiment, the first cutting portion (122) may have a first cutting edge (122a) at the upper end, and the second cutting portion (222) may have a second cutting edge (222a) at the lower end configured to be in contact with the first cutting edge (122a). The first cutting edge (122a) is formed along an edge of the upper end of the first cutting portion (122) and extends parallel to the one-side direction (OD). The second cutting edge (222a) is formed along an edge of the lower end of the second cutting portion (222) and extends parallel to the one-side direction (OD).

[0047] Figure 6 is a front view showing the first and second blades illustrated in Figure 2 in an enlarged manner.

[0048] As illustrated in FIG. 6, in one embodiment, the first cutting portion (122) may include a first flat surface (122b), which is a front end surface of the first cutting portion (122), and the second cutting portion (222) may include a second flat surface (222b), which is a rear end surface of the second cutting portion (222). A rear end of the first cutting portion (122) may have a rearward convex surface formed. A cross-section of the first cutting portion (122) along the front-back direction (FD-RD) may have an approximately semicircular shape. A front end of the second cutting portion (222) may have a forward convex surface formed. A cross-section of the second cutting portion (222) along the front-back direction (FD-RD) may have an approximately semicircular shape. In one embodiment, when the first cutting portion (122) and the second cutting portion (222) are in contact, the first flat surface (122b) and the second flat surface (222b) can be in contact on the same plane.

[0049] In one embodiment, the first flat surface (122b) and the second flat surface (222b) can extend in a direction between a downward direction (i.e., downward (DD)) and a rearward direction (i.e., rearward (RD)). As illustrated in FIG. 6, the first flat surface (122b) and the second flat surface (222b) can be oriented so as to have a predetermined angle with respect to a virtual plane (VS) that is perpendicular to the front-back direction (FD-RD).

[0050] Figure 7 is a perspective view showing the first and second blades illustrated in Figure 2 from different angles.

[0051] As illustrated in FIG. 7, in one embodiment, when the first cutting portion (122) and the second cutting portion (222) are in contact, the first cutting portion (122) may be positioned rearward (RD) with respect to the second cutting portion (222), and the first non-cutting portion (121) may be positioned in one direction (OD) with respect to the second non-cutting portion (221). The first blade (120) including the first non-cutting portion (121) and the first cutting portion (122) is positioned rearward (RD) and in one direction (OD) with respect to the second blade (220) including the second non-cutting portion (221) and the second cutting portion (222). Due to this configuration, the sizes of the first blade (120) and the second blade (220) of the surgical scissors (1000) can be minimized. Accordingly, the incision area of ​​the cornea through which the surgical scissors (1000) can be inserted can be minimized. As a result, damage to the cornea can be suppressed or prevented.

[0052] According to one embodiment, the surgical scissors (1000) may further include a stopper (400) coupled to the first handle (110) or the second handle (210) and configured to maintain a minimum separation distance between the first handle (110) and the second handle (210). The minimum separation distance may refer to a maximum distance that the first handle (110) and the second handle (210) can move toward each other to incise the anterior capsule of the crystalline lens. The stopper (400) may be formed to protrude downward (DD) from the lower surface of the first handle (110) or may be formed to protrude upward (UD) from the upper surface of the second handle (210).

[0053] In one embodiment, the first lever (100) may include a first elastic member (130) extending rearward (RD) from the rear end of the first handle (110), and the second lever (200) may include a second elastic member (230) extending rearward (RD) from the rear end of the second handle (210). In this embodiment, as illustrated in FIG. 1, the rear end of the first elastic member (130) and the rear end of the second elastic member (230) may be connected to each other so that the first elastic member (130) is elastically deformed to be convexly bent upward (UD), and the second elastic member (230) is elastically deformed downward (DD). When the operator applies a force to press the first handle (110) and the second handle (210) to move them closer to each other, the first elastic member (130) and the second elastic member (230) are elastically deformed. When the operator removes the force applying pressure to the first handle (110) and the second handle (210), the first handle (110) and the second handle (210) return to their original positions by the elastic restoring force of the first elastic part (130) and the second elastic part (230). Since the operator only needs to apply pressure to move the first handle (110) and the second handle (210) when making an incision, fatigue of the operator during the surgery can be reduced.

[0054] Figure 8 is a front view showing an enlarged view of the first blade illustrated in Figure 3.

[0055] As illustrated in FIG. 8, in one embodiment, the first lever (100) further includes a first rotational axis support (140) having a rotational axis (300) positioned between the first handle (110) and the first non-cutting portion (121), and the first non-cutting portion (121) can extend forward (FD) from the lower portion of the first rotational axis support (140). The first rotational axis support (140) is a part of the front end of the first handle (110) and can be formed integrally with the first handle (110). The size of the first non-cutting portion (121) along the up-down direction (UD-DD) is smaller than that of the first rotational axis support (140).

[0056] Figure 9 is a front view showing an enlarged view of the second blade illustrated in Figure 3.

[0057] As illustrated in FIG. 9, in this embodiment, the second lever further includes a second rotational axis support (240) having a rotational axis (300) positioned between the second handle (210) and the second non-cutting portion (221), and the second non-cutting portion (221) can extend forward (FD) from the upper side of the second rotational axis support (240). The second rotational axis support (240) is a part of the front end of the second handle (210) and can be formed integrally with the second handle (210). The size of the second non-cutting portion (221) along the up-down direction (UD-DD) is smaller than that of the second rotational axis support (240).

[0058] Since the first non-cutting part (121) is located at the lower side of the first rotational axis support part (140) and the second non-cutting part (221) is located at the upper side of the second rotational axis support part (240), when the first cutting part (122) and the second cutting part (222) are in contact, the size of the first non-cutting part (121) and the second non-cutting part (221) in the vertical direction can be the same as the size of the first rotational axis support part (140) or the size of the second rotational axis support part (240). Due to this configuration, the size of the first blade (120) and the second blade (220) of the surgical scissors (1000) can be minimized. Therefore, the incision site of the cornea for the surgical scissors (1000) to enter can be minimized. As a result, damage to the cornea can be suppressed or prevented.

[0059] While the technical concept of the present disclosure has been described above with reference to certain embodiments and examples illustrated in the accompanying drawings, it should be understood that various substitutions, modifications, and variations may be made without departing from the technical concept and scope of the present disclosure, which would be understood by those skilled in the art to which the present disclosure pertains. Furthermore, such substitutions, modifications, and variations should be considered to fall within the scope of the appended claims.

Claims

1. Surgical scissors for cutting the anterior capsule of the lens. A first lever extending in the forward and backward direction; a second lever extending in the forward and backward direction; and It includes a rotary shaft that rotatably connects the first lever and the second lever to each other, The above first lever, A first handle formed at the rear portion based on the above rotation axis; and A first blade having a first non-cutting portion formed at the front portion and extending forward based on the rotation axis, and a first cutting portion protruding in one direction crossing the front-back direction and the up-down direction from the front end of the first non-cutting portion, The second lever above, A second handle formed at the rear portion based on the rotation axis and capable of being moved downward from the first handle; and A second blade having a second non-cutting portion formed at the front portion and extending forward based on the rotation axis, and a second cutting portion protruding in the one direction from the front end of the second non-cutting portion and configured to contact the first cutting portion, When the second lever rotates relative to the first lever so that the first handle and the second handle come closer to each other in the vertical direction, the first cutting portion and the second cutting portion are configured to cut the anterior sac. Surgical scissors for incising the anterior capsule of the crystalline lens.

2. In paragraph 1, The above first cutting part has a first cutting edge at the top, The second cutting part has a second cutting edge configured to be in contact with the first cutting edge at the bottom. Surgical scissors for incising the anterior capsule of the crystalline lens.

3. In paragraph 1, The first cutting portion includes a first flat surface which is a cross-sectional surface of the first cutting portion, The second cutting portion includes a second flat surface which is the rear surface of the second cutting portion. Surgical scissors for incising the anterior capsule of the crystalline lens.

4. In paragraph 3, In a state where the first cutting portion and the second cutting portion are in contact, the first flat surface and the second flat surface are in contact on the same plane. Surgical scissors for incising the anterior capsule of the crystalline lens.

5. In paragraph 4, The first flat surface and the second flat surface extend in a direction between the downward direction and the rearward direction, Surgical scissors for incising the anterior capsule of the crystalline lens.

6. In paragraph 1, In a state where the first cutting portion and the second cutting portion are in contact with each other, the first cutting portion is located rearward with respect to the second cutting portion, and the first non-cutting portion is located in the one direction with respect to the second non-cutting portion. Surgical scissors for incising the anterior capsule of the crystalline lens.

7. In paragraph 1, Further comprising a stopper coupled to the first handle or the second handle and configured to maintain a minimum distance between the first handle and the second handle. Surgical scissors for incising the anterior capsule of the crystalline lens.

8. In paragraph 1, The first lever includes a first elastic member extending rearward from the rear end of the first handle, The second lever includes a second elastic member extending rearward from the rear end of the second handle, The rear end of the first elastic part and the rear end of the second elastic part are connected to each other, so that the first elastic part is elastically bent and deformed to be convex upward, and the second elastic part is elastically bent and deformed to be convex downward. Surgical scissors for incising the anterior capsule of the crystalline lens.

9. In paragraph 1, The first lever includes a first rotary shaft support member in which the rotary shaft is positioned between the first handle and the first non-cutting member, The above first non-cutting portion extends forward from the lower portion of the first rotary shaft support portion, The second lever further includes a second rotary shaft support member in which the rotary shaft is positioned between the second handle and the second non-cutting member, The second non-cutting portion extends forward from the upper portion of the second rotary shaft support portion, Surgical scissors for incising the anterior capsule of the crystalline lens.

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