Cutting method for lacrimal canaliculus insert

By using stretching and vertical cutting methods, the problems of cutting accuracy and flatness of lacrimal canaliculus inserts were solved, achieving high-precision, automated insert cutting and reducing labor costs.

WO2025246705A1PCT designated stage Publication Date: 2025-12-04SHENZHEN RAYTONE PHARMACEUTICAL CO LTD
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Patent Information

Application Number
PCT/CN2025/089173
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-29
Filing Date
2025-04-16
Publication Date
2025-12-04

AI Technical Summary

Technical Problem

The cutting precision of existing lacrimal canaliculus inserts is poor, and the cut surface is uneven, making it difficult to meet high precision requirements through manual operation.

Method used

The insert is stretched to a taut state along the first length direction using a stretching and straightening device, and then cut in the vertical direction using a cutting and fixing device and a cutting tool to ensure the alignment of the cutting gap and the positioning groove.

Benefits of technology

It achieves high-precision insert cutting with a smooth cut surface that meets preset length requirements, simplifies operation, reduces labor costs, and enables automated production.

✦ Generated by Eureka AI based on patent content.

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Abstract

A cutting method for a lacrimal canaliculus insert, the cutting method comprising: placing an insert (1) to be cut on a placement platform (2), the insert (1) being used to be implanted into the lacrimal canaliculus, and the insert (1) having a first lengthwise direction; stretching the insert (1) in the first lengthwise direction so that the insert (1) to be cut is in a straightened state; and cutting the stretched insert (1) to obtain a plurality of finished inserts meeting a preset length, wherein the cutting direction in which the insert (1) is cut at least intersects with the first lengthwise direction. The cutting method can achieve high-precision cutting of the insert (1), and has the advantages of being easy to operate and making the insert (1) have a flat cut surface.
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Description

A cutting method for lacrimal canaliculus inserter Technical Field

[0001] This application relates to the field of medical cutting methods, and in particular to a cutting method for lacrimal canaliculus inserts. Background Technology

[0002] Ophthalmic canaliculus inserters are drug delivery systems that are non-invasively inserted into the lacrimal canaliculi by mixing a drug with a matrix to form a formulation, thereby allowing for the slow and continuous release of the active ingredient. Canaliculus inserters are small cylindrical drug formulations or medical devices prepared by injection molding and drying (or stretching and drying) after mixing the drug with a hydrogel matrix.

[0003] Human lacrimal canaliculi are very small, and to match their size, the inserted canaliculus insert also needs to be very small. Therefore, the cutting precision required during the processing of canaliculus inserts is quite high. Currently, the cutting of canaliculus inserts is mostly done manually. The disadvantage of manual cutting is that the hydrogel material of the canaliculus insert is usually quite soft and easily deformed. This results in an uneven surface of the manually cut insert, and the shape cannot be maintained, which is not conducive to subsequent insertion into the canaliculus. Furthermore, the precision is poor. Summary of the Invention

[0004] In view of the above-mentioned technical problems in the prior art, this application provides a cutting method for lacrimal canaliculus inserts, which can achieve high-precision cutting of the inserts, and has the advantages of simple operation and smooth cut surface of the inserts.

[0005] This application provides a method for cutting a lacrimal canaliculus insert, comprising: placing the insert to be cut on a placement platform; wherein the insert is for implantation into the lacrimal canaliculus and the insert has a first length direction; stretching the insert along the first length direction to taut the insert to be cut; cutting the stretched insert to obtain multiple finished inserts of a preset length; wherein the cutting direction of the insert intersects at least the first length direction.

[0006] In some embodiments, stretching the insert along the first length direction specifically includes: applying a stretching and straightening device to both ends of the insert to be cut along the first length direction; setting one end of the insert as a fixed end and the other end of the insert as a force-bearing end; and using the stretching and straightening device to move and stretch the force-bearing end of the insert, so that the insert to be cut is in a taut state.

[0007] In some embodiments, stretching the insert along the first length direction specifically includes: determining the stretching force on the insert to be cut; and stopping the stretching of the insert to be cut when the stretching force meets a preset tension.

[0008] In some embodiments, the cutting method further includes: placing multiple inserts to be cut side by side on a placement platform; stretching the multiple inserts along the first length direction; and cutting the stretched multiple inserts.

[0009] In some embodiments, the cutting method further includes:

[0010] A cutting and fixing device is used to set a preset length corresponding to the finished insert; wherein, the cutting and fixing device is set above the placement platform, and the cutting and fixing device is provided with multiple cutting slits spaced at intervals that meet the preset length;

[0011] The insert on the placement platform is cut by passing a cutting tool through the cutting slit.

[0012] In some embodiments, the placement platform is provided with a plurality of spaced-apart cutting positioning grooves, the insert to be cut is placed above the cutting positioning grooves, the cutting positioning grooves are provided in a one-to-one correspondence with the cutting gaps, and the cutting tool extends through the cutting gaps into the cutting positioning grooves to cut the insert.

[0013] In some embodiments, the insert to be cut is constructed as a long strip, and the placement platform is provided with a plurality of spaced material slots, and the plurality of inserts to be cut are respectively embedded in the corresponding material slots.

[0014] In some embodiments, the length direction of the cutting slit is perpendicular to the first length direction.

[0015] In some embodiments, the depth of the cutting positioning groove is greater than or equal to the depth of the material groove.

[0016] In some embodiments, the length direction of the cutting positioning groove is the same as the length direction of the cutting kerf; and / or,

[0017] The width of the cutting positioning groove is the same as the width of the cutting kerf.

[0018] In some embodiments, the cutting and fixing device is provided with a first action member, and the placement platform is provided with a second action member that can interact with the first action member, so that the lower surface of the cutting and fixing device and the upper surface of the placement platform are in contact.

[0019] In some embodiments, the length of the finished insert ranges from 1 mm to 8 mm.

[0020] In some embodiments, the width of the cutting kerf is greater than or equal to the thickness of the cutting tool.

[0021] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: This application places the insert to be cut on a placement platform, stretches the insert along a first length direction to make the insert to be cut in a taut state, and then cuts the stretched insert to obtain multiple finished inserts that meet the preset length. The finished inserts cut in the taut state have good cut integrity. By providing appropriate tension to the insert to be cut, the cut surface of the finished insert can maintain flatness and integrity after cutting. In addition, the finished inserts cut by the above cutting method have high cutting accuracy, which can ensure that the finished inserts meet the preset length. It also has the advantages of simple operation, automated production, and saving labor costs. Attached Figure Description

[0022] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0023] Figure 1 is a schematic diagram of the structure of an automated flat knife device in the prior art;

[0024] Figure 2 is a first flowchart of the cutting method for lacrimal canaliculus inserter according to an embodiment of this application;

[0025] Figure 3 is a schematic diagram of the cutting device for the cutting method of lacrimal canaliculus insert using the embodiment of this application. The insert to be cut shown in the figure is one piece.

[0026] Figure 4 is a second flowchart of the cutting method for lacrimal canaliculus inserter according to an embodiment of this application;

[0027] Figure 5 is a schematic diagram of the cutting device for the cutting method of lacrimal canaliculus inserts according to the embodiments of this application. The inserts to be cut shown in the figure are multiple.

[0028] The components indicated by the reference numerals in the figure are: 1. Insert; 2. Placement platform; 21. Cutting positioning groove; 22. Material trough; 3. Stretching and straightening device; 4. Cutting fixing device; 41. Cutting slit; 5. Cutting blade; 6. Conveyor belt; 7. Discharge port; 8. Blade; 9. Baffle. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific examples, but these are not intended to limit the scope of this application.

[0030] The terms "first," "second," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0031] In this application, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0032] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] In existing technologies, lacrimal canaliculus inserts are cut using an automated flat-blade device or manually with a scalpel. As shown in Figure 1, the automated flat-blade device places the lacrimal canaliculus insert on its conveyor belt 6, which transports it to the outlet 7. The outlet 7 has a groove to hold the insert, and a baffle 9 in front controls the desired length of the finished insert. A sensor-activated blade 8 at the outlet 7 allows for rapid cutting of the insert. Under magnification, the finished lacrimal canaliculus insert cut by the automated flat-blade device exhibits a noticeable bending and unevenness at the cut, indicating a natural curling of the insert before cutting. For manually cutting lacrimal canaliculus inserts, the insert is typically placed on a clean surface, measured with a ruler, and cut with a scalpel to a length of approximately 3 mm. Under magnification, deformation of the cut surface, slag residue, and material breakage at the cut are clearly visible. To address the issues of burrs and unevenness at the cut, this application proposes a method for cutting lacrimal canaliculus inserts that achieves high-precision cutting of the insert 1, offering advantages such as simple operation and a smooth cut surface.

[0035] As shown in Figures 2 and 3, the cutting method for the lacrimal canaliculus insert includes steps S101 to S103.

[0036] Step S101: Place the insert 1 to be cut on the placement platform 2; wherein the insert 1 is used for implantation into the lacrimal canaliculus, and the insert 1 has a first length direction.

[0037] Step S102: Stretch the insert 1 along the first length direction to make the insert 1 to be cut taut.

[0038] Step S103: Cut the stretched insert 1 to obtain multiple finished inserts of a preset length. The cutting direction of the insert 1 intersects at least the first length direction.

[0039] Optionally, the cutting device using the cutting method of the present application embodiment may include a placement platform 2, the upper surface of which may be constructed as a placement plane, and the placement plane may stably support the insert 1 to be cut.

[0040] Optionally, the insert 1 to be cut can be constructed as a cylinder, with its axial direction being the first length direction of the insert 1. Of course, the insert 1 to be cut can also be other shapes, such as a quadrilateral or elliptical cross-section. This application does not specifically limit this, as long as the insert 1 to be cut is a strip with a first length direction.

[0041] Optionally, the method of stretching the insert 1 to be cut can be by using a stretching and straightening device 3, or other devices, or by having the operator manually apply the tension. Preferably, using the stretching and straightening device 3 can stably apply tension to the insert 1 to be cut, and can simultaneously stretch multiple inserts 1 to be cut, thereby improving cutting efficiency.

[0042] Optionally, when stretching the insert 1, one end of the insert 1 can be fixed while applying tension to the other end of the insert 1, or tension can be applied to both ends of the insert 1 simultaneously. This application does not make specific limitations on this, as long as the insert 1 can be stretched stably.

[0043] Understandably, the insertion 1 to be cut being in a taut state can avoid the deformation caused by the natural curling of the insertion 1. The insertion 1 in a taut state is relatively flat, and the entire insertion 1 can be kept straight along its first length direction.

[0044] Optionally, the multiple finished inserts obtained by cutting the insert 1 multiple times may have the same or different preset lengths. This application places the insert 1 to be cut on the placement platform 2, stretches the insert 1 along the first length direction to make it taut, and then cuts the stretched insert 1 to obtain multiple finished inserts that meet the preset length. This method of cutting in a taut state results in good cut integrity. By providing appropriate tension to the insert 1, the cut surface of the finished insert can maintain flatness and integrity after cutting. Furthermore, the cutting accuracy of the finished inserts obtained by the above method is high, ensuring that the finished inserts meet the preset length. It also has the advantages of simple operation, automated production, and reduced labor costs.

[0045] In some embodiments, as shown in Figures 3 and 4, stretching the insert 1 along a first length direction specifically includes steps S201 to S203.

[0046] Step S201: The stretching and straightening device 3 is applied to both ends of the insert 1 to be cut in the first length direction.

[0047] Step S202: Set one end of the insert 1 as the fixed end and set the other end of the insert 1 as the force-bearing end.

[0048] Step S203: Use the stretching and straightening device 3 to move the force-bearing end of the stretching insert 1 so that the insert 1 to be cut is in a taut state.

[0049] In the above embodiment, one end of the insert 1 is fixed to the stretching and straightening device 3, and the other end of the insert 1 is adjusted by the stretching and straightening device 3 so that the insert 1 is in a taut state during cutting, ensuring that the length of the insert 1 after cutting meets the preset requirements, and effectively ensuring the cutting integrity and cutting quality of the finished insert after cutting.

[0050] Optionally, the cutting device using the cutting method of the present application embodiment may include the above-mentioned stretching and straightening device 3. The stretching and straightening device 3 may include a tensioning device, which may be connected to the force-receiving end of the insert 1 to apply tension to the force-receiving end of the insert 1.

[0051] Optionally, the stretching and straightening device 3 may also include a plate, and the two ends of the insert 1 to be cut may be connected to the plate and fixed by the plate.

[0052] In some embodiments, as shown in FIG3, stretching the insert 1 along the first length direction specifically includes: determining the stretching force on the insert 1 to be cut; and stopping the stretching of the insert 1 to be cut when the stretching force meets the preset tension.

[0053] In the above embodiments, the relationship between the tension applied to the insert 1 to be cut and the preset tension can be used to determine whether the insert 1 to be cut is in a taut state. When the tension applied to the insert 1 to be cut meets the preset tension, it can be determined that the insert 1 to be cut is in a taut state, and the stretching can be stopped and the cutting operation can be performed. This further improves the quality and reliability of the finished insert after cutting.

[0054] Optionally, a tension detection device can be provided on the side of the tensioning and straightening device 3 that applies tension to the force-bearing end of the insert 1. This device can directly detect the tension applied by the tensioning and straightening device 3 to ensure that the tension applied to the insert 1 to be cut can stop stretching the insert 1 to be cut in time after the preset tension is met.

[0055] Optionally, the preset tension is related to the size of the insert 1 to be cut. The preset tension can increase as the size of the insert 1 to be cut increases, so that the insert 1 to be cut can be kept in a taut state. The size of the insert 1 to be cut can be understood as the diameter, length, and other dimensions of the insert 1 to be cut.

[0056] In some embodiments, as shown in FIG5, the cutting method further includes: placing multiple inserts 1 to be cut side by side on the placement platform 2; stretching the multiple inserts 1 along a first length direction; and cutting the stretched multiple inserts 1.

[0057] In the above embodiments, multiple inserts 1 to be cut can be cut into finished inserts at the same time. The cutting of multiple inserts 1 to be cut can be completed in one cut, which greatly simplifies the cutting operation steps and improves the cutting efficiency.

[0058] The aforementioned multiple inserts 1 to be cut can be arranged side by side in a direction perpendicular to the first length direction, that is, the multiple inserts 1 to be cut can be arranged in parallel. The multiple inserts 1 to be cut can be evenly arranged on the placement platform 2 at preset intervals.

[0059] In some embodiments, as shown in Figures 3 and 5, the cutting method further includes: setting a preset length of the corresponding finished insert using a cutting fixing device 4; wherein the cutting fixing device 4 is disposed above the placement platform 2, and the cutting fixing device 4 is provided with multiple cutting slits 41 spaced at intervals that meet the preset length; and using a cutting tool 5 to cut the insert 1 on the placement platform 2 by passing through the cutting slits 41.

[0060] In the above embodiment, the cutting device 4, which includes the cutting fixing device, is placed above the insert 1 to be cut. The cutting blade 5 can pass through the cutting slit 41 on the cutting fixing device 4 to cut the insert 1. The cutting slit 41 can guide the cutting blade 5 to ensure the flatness of the cross-section of the finished insert after cutting, effectively improving the accuracy of the cutting method and further improving the flatness of the cut surface of the finished insert.

[0061] Optionally, the multiple cutting slits 41 can be arranged in parallel, and the length direction of the multiple cutting slits 41 is perpendicular to the first length direction.

[0062] The spacing between the multiple cutting slits 41 mentioned above may be the same or different, and this application does not make a specific limitation in this regard. The spacing between adjacent cutting slits 41 can be understood as the length of the insert 1 formed by the cutting.

[0063] In some embodiments, as shown in Figures 3 and 5, the placement platform 2 is provided with a plurality of spaced cutting positioning grooves 21. The insert 1 to be cut is placed above the cutting positioning grooves 21. The cutting positioning grooves 21 and the cutting gaps 41 are arranged in a one-to-one correspondence. The cutting tool 5 passes through the cutting gaps 41 and extends into the cutting positioning grooves 21 to cut the insert 1.

[0064] In the above embodiment, the cutting positioning groove 21 is set to correspond to the cutting gap 41. After the cutting tool 5 passes through the cutting gap 41, it can accurately extend into the cutting positioning groove 21. In this way, the cutting depth and force during the cutting process can be guaranteed, effectively avoiding the problem that the finished insert cannot be effectively cut due to insufficient cutting depth or force, ensuring the flatness of the cutting surface, and greatly ensuring the quality of the finished insert after cutting.

[0065] The one-to-one correspondence between the cutting positioning groove 21 and the cutting gap 41 can be understood as the cutting positioning groove 21 and the cutting gap 41 being aligned, so that the cutting tool 5 can directly extend into the cutting positioning groove 21 after passing through the cutting gap 41.

[0066] In some embodiments, as shown in FIG5, the insert 1 to be cut is constructed as a long strip, and the placement platform 2 is provided with a plurality of spaced material slots 22, and the plurality of inserts 1 to be cut are respectively embedded in the corresponding material slots 22.

[0067] In the above embodiments, the insert 1 to be cut can be embedded into the corresponding material groove 22 to ensure that the insert 1 to be cut can be firmly fixed on the placement platform 2 during the cutting process, avoiding the situation where the insert 1 to be cut is deformed or damaged due to external force, and effectively ensuring the integrity and quality of the finished insert after cutting.

[0068] Optionally, the width and depth of the material tank 22 are both greater than the diameter of the insert 1, so that the insert 1 can be completely embedded in the corresponding material tank 22.

[0069] Optionally, the material tank 22 is set in a one-to-one correspondence with the insert 1 to be cut, that is, one material tank 22 contains one insert 1.

[0070] In some embodiments, as shown in Figures 3 and 5, the length direction of the cutting slit 41 is perpendicular to the first length direction.

[0071] In the above embodiments, the cutting tool 5 can cut perpendicularly to the insert 1 to be cut, which can ensure the flatness and integrity of the cut surface of the finished insert, and further improve the quality of the finished insert after cutting.

[0072] Optionally, the length direction of the material trough 22 is perpendicular to the length direction of both the cutting slit 41 and the cutting positioning groove 21, that is, the length direction of the material trough 22 is parallel to the first length direction.

[0073] In some embodiments, the depth of the cutting positioning groove 21 is greater than or equal to the depth of the material groove 22.

[0074] In the above embodiment, the depth of the cutting positioning groove 21 is greater than or equal to the depth of the material groove 22, which can ensure that when cutting the insert 1 placed in the material groove 22, the cutting path length of the cutting tool 5 is greater than the diameter of the insert 1, thereby completely cutting and separating the insert 1.

[0075] In some embodiments, as shown in Figures 3 and 5, the length direction of the cutting positioning groove 21 is the same as the length direction of the cutting slit 41; and / or, the width of the cutting positioning groove 21 is the same as the width of the cutting slit 41.

[0076] In the above embodiments, the corresponding size of the cutting positioning groove 21 and the cutting gap 41 ensures that after the cutting tool 5 passes through the cutting gap 41, the entire blade body falls into the cutting positioning groove 21, effectively ensuring the stability and reliability of the cutting process.

[0077] In some embodiments, the cutting and fixing device 4 is provided with a first action member, and the placement platform 2 is provided with a second action member that can act with the first action member, so that the lower surface of the cutting and fixing device 4 and the upper surface of the placement platform 2 are in contact.

[0078] In the above embodiment, the cutting fixing device 4 and the placement platform 2 can be firmly fixed together by the first and second action members. The lower surface of the cutting fixing device 4 and the upper surface of the placement platform 2 are in contact with each other. The material groove 22 on the placement platform 2 can be used to limit the insertion agent 1 to be cut, effectively preventing the insertion agent 1 to be cut from shifting during the cutting process.

[0079] Optionally, the first and second action members can be constructed as magnetic elements that can attract each other. Through the attraction between the first and second action members, the cutting and fixing device 4 can be stably placed on the placement platform 2, and the cutting and fixing device 4 can be effectively positioned relative to the placement platform 2 to ensure that the cutting gap 41 and the cutting positioning groove 21 are aligned, so that the cutting tool 5 can stably cut the insert 1.

[0080] Optionally, the first and second action members can be configured as components that can be snapped together, so that the cutting and fixing device 4 can be stably placed on the placement platform 2 through the snapping of the first and second action members.

[0081] In some other embodiments, the cutting fixing device 4 and the placement platform 2 can be clamped by a fixing clip to ensure that the cutting fixing device 4 is stably placed on the placement platform 2.

[0082] In some embodiments, the length of the finished insert ranges from 1 mm to 8 mm.

[0083] In the above embodiments, the length of the finished insert is controlled between 1mm and 8mm, which can meet the usage scenarios of the finished insert and effectively improve the convenience and universality of the finished insert.

[0084] Preferably, the preset length of the finished insert ranges from 2.95 mm to 3.05 mm.

[0085] In some embodiments, the width of the cutting slit 41 is greater than or equal to the thickness of the cutting tool 5.

[0086] In the above embodiments, the width of the cutting slit 41 is greater than or equal to the thickness of the cutting tool 5, which allows the cutting tool 5 to pass smoothly and easily through the cutting slit 41 and cut the insert 1, effectively improving the reliability of the cutting method.

[0087] Optionally, the cutting tool 5 described above may consist of one or more tools.

[0088] Optionally, the thickness of the cutting tool 5 ranges from 0.01 mm to 0.05 mm.

[0089] Optionally, the cutting device may further include a tool control device that can automatically control the movement of the cutting tool 5 to cut the insert 1.

[0090] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this application that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive.

[0091] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the application. This should not be construed as an intention that a disclosed feature not claimed is necessary for any claim. Rather, the subject matter of the application may be less than all the features of a particular disclosed embodiment. Thus, the claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated as being combined with each other in various combinations or arrangements. The scope of this application should be determined by reference to the appended claims and the full scope of their equivalents.

[0092] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A cutting method for a lacrimal canaliculus insert, characterized in that, include: The insert to be cut is placed on a placement platform; wherein the insert is for implantation into the lacrimal canaliculus and the insert has a first length direction; The insert is stretched along the first length direction to make the insert to be cut taut. The stretched insert is cut to obtain multiple finished inserts of a preset length; wherein the cutting direction of the insert intersects at least the first length direction.

2. The cutting method for lacrimal canaliculus inserting agent according to claim 1, characterized in that, The stretching of the insert along the first length direction specifically includes: The tensioning and straightening device is applied to both ends of the insert to be cut along its first length direction; One end of the insert is designated as the fixed end, and the other end of the insert is designated as the force-bearing end; The force-bearing end of the insert is moved and stretched using the stretching and straightening device, so that the insert to be cut is in a taut state.

3. The cutting method for lacrimal canaliculus inserting agent according to claim 1, characterized in that, The stretching of the insert along the first length direction specifically includes: Determine the tensile force exerted on the insert to be cut; When the stretching force meets the preset tension, stop stretching the insert to be cut.

4. The cutting method for lacrimal canaliculus inserting agent according to claim 1, characterized in that, The cutting method further includes: Multiple inserts to be cut are placed side by side on the placement platform; Stretching multiple inserts along the first length direction; The stretched inserts are then cut.

5. The cutting method for lacrimal canaliculus inserting agent according to claim 1, characterized in that, The cutting method further includes: A cutting and fixing device is used to set a preset length corresponding to the finished insert; wherein, the cutting and fixing device is set above the placement platform, and the cutting and fixing device is provided with multiple cutting slits spaced at intervals that meet the preset length; The insert on the placement platform is cut by passing a cutting tool through the cutting slit.

6. The cutting method for lacrimal canaliculus inserting agent according to claim 5, characterized in that, The placement platform is provided with multiple spaced cutting positioning slots. The insert to be cut is placed above the cutting positioning slots. The cutting positioning slots and cutting gaps are arranged in a one-to-one correspondence. The cutting tool passes through the cutting gap and extends into the cutting positioning slot to cut the insert.

7. The cutting method for lacrimal canaliculus inserter according to claim 6, characterized in that, The insert to be cut is long and narrow, and the placement platform is provided with multiple spaced material slots. The multiple inserts to be cut are respectively embedded in the corresponding material slots.

8. The cutting method for lacrimal canaliculus inserting agent according to claim 5, characterized in that, The length direction of the cut slit is perpendicular to the first length direction.

9. The cutting method for lacrimal canaliculus inserting agent according to claim 7, characterized in that, The depth of the cutting positioning groove is greater than or equal to the depth of the material groove.

10. The cutting method for lacrimal canaliculus inserting agent according to claim 6, characterized in that, The length direction of the cutting positioning groove is the same as the length direction of the cutting slit; and / or, The width of the cutting positioning groove is the same as the width of the cutting kerf.

11. The cutting method for lacrimal canaliculus inserting agent according to claim 5, characterized in that, The cutting and fixing device is provided with a first action member, and the placement platform is provided with a second action member that can interact with the first action member, so that the lower surface of the cutting and fixing device and the upper surface of the placement platform are in contact.

12. The cutting method for lacrimal canaliculus inserting agent according to claim 1, characterized in that, The length of the finished insert ranges from 1 mm to 8 mm.

13. The cutting method for lacrimal canaliculus inserting agent according to claim 5, characterized in that, The width of the cutting kerf is greater than or equal to the thickness of the cutting tool.

Citation Information

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