Lens insertion push force detection device

Abstract

This utility model discloses a lens insertion force detection device, comprising: a housing, a fixing mechanism, a push rod, a driving mechanism, a force sensor, and a data processing mechanism. The fixing mechanism is disposed outside the housing and is used to fix the lens inserter along the insertion direction. The lens inserter has a pressing end and a discharging end disposed opposite each other along the insertion direction. The push rod is disposed outside the housing and located on the side of the fixing mechanism away from the discharging end along the insertion direction. The driving mechanism is disposed inside the housing, and the push rod is connected to the output end of the driving mechanism. The driving mechanism is used to drive the push rod to push the pressing end along the insertion direction, so that the lens is discharging from the discharging end. The force sensor is connected to the push rod and is used to detect the pushing force in real time. The data processing mechanism is electrically connected to the driving mechanism and the force sensor and is used to generate a pushing force-stroke curve.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a lens insertion and pushing force detection device. Background Technology

[0002] In ophthalmic surgery, the implantation of an intraocular lens (IOL) is one of the key steps in the entire procedure. Currently, IOLs are mostly inserted into the eye after being loaded into an implantation device. The implantation head is the distal component of this device, and its structure and performance directly affect the ease with which the IOL can be inserted into the eye and the postoperative outcome.

[0003] In practical use, doctors apply a certain amount of manual force to push the intraocular lens into the delivery tip, allowing it to pass through the delivery channel and ultimately be released into the posterior chamber of the eye. Excessive pushing force can cause lens deformation, obstructed delivery, or even damage to eye tissues; insufficient pushing force may prevent the lens from being delivered at all. Therefore, accurate and repeatable testing of the pushing force of the delivery tip has become a key technical means to evaluate the quality and safety of delivery devices.

[0004] However, there is currently a lack of standardized instruments specifically designed for testing the pushing force of the delivery head. Existing testing methods mostly rely on manual pushing, which results in highly volatile, subjective, and poorly repeatable test data, failing to meet the needs of precision medical device testing.

[0005] Therefore, there is an urgent need to design a device that can automatically detect the pushing force of the lens implanter. Utility Model Content

[0006] The technical problem to be solved by this utility model embodiment is to provide a lens implantation force detection device that can automatically detect the lens implantation force.

[0007] To address the aforementioned technical problems, this utility model provides a lens introduction pushing force detection device. The device includes: a housing, a fixing mechanism, a push rod, a driving mechanism, a force sensor, and a data processing mechanism. The fixing mechanism is located outside the housing and is used to fix the lens introducer along the introduction direction. The lens introducer has a pressing end and a discharging end arranged opposite each other along the introduction direction. The push rod is located outside the housing and on the side of the fixing mechanism away from the discharging end along the introduction direction. The driving mechanism is located inside the housing, and the push rod is connected to the output end of the driving mechanism. The driving mechanism drives the push rod to push the pressing end along the introduction direction, so that the lens is discharging from the discharging end. The force sensor is connected to the push rod and is used to detect the pushing force in real time. The data processing mechanism is electrically connected to the driving mechanism and the force sensor and is used to generate a pushing force-stroke curve.

[0008] In one feasible implementation, the fixing mechanism is detachably connected to the housing.

[0009] In one feasible implementation, the fixing mechanism is detachably connected to the housing by a number of bolts.

[0010] In one feasible implementation, the fixing mechanism is detachably connected to the housing via a slot and a block.

[0011] In one feasible implementation, the fixing mechanism includes a base and two first limiting structures disposed opposite to each other along the introduction direction. Each first limiting structure includes two first protrusions protruding from the base along a second direction. The two first protrusions are disposed opposite to each other along a third direction. The first limiting structures are used to limit the movement of the lens introducer along a direction parallel to the introduction direction and the third direction. The second direction is perpendicular to the introduction direction and the third direction, and the third direction is perpendicular to the introduction direction.

[0012] In one feasible implementation, the fixing mechanism further includes a second limiting structure for limiting the movement of the lens implanter along a direction parallel to the second direction.

[0013] In one feasible implementation, the second limiting structure is a locking structure, including a locking buckle and a locking hook that cooperate with each other. The locking buckle is fixedly connected to the base, and the locking hook is arranged along a third direction. One end of the locking hook along the third direction is hinged to the base, and the other end is connected to the locking buckle.

[0014] In one feasible implementation, the lens introduction and pushing force detection device further includes a sample slot, which is disposed along the introduction direction on the side of the fixing mechanism near the exit end, for carrying the exited lens sample.

[0015] In one feasible implementation, the lens insertion force detection device further includes a dustproof component, which is connected to the housing via a hinge structure and is located on the same side as the fixing mechanism and the push rod.

[0016] In one feasible implementation, the lens insertion force detection device further includes a handle, which is installed on the outer wall of the housing on the side away from the outlet end along the insertion direction.

[0017] Implementing this utility model has the following beneficial effects:

[0018] The lens insertion force detection device provided in this application embodiment drives a push rod along the insertion direction via a drive mechanism to simulate the pressing end, causing the lens to be exported from the export end. It automatically simulates the pushing action, and a data processing mechanism generates a pushing force-stroke curve. Based on the first peak value of the pushing force-stroke curve, the pushing force required for the lens to be exported by the lens introducer is obtained, thus achieving automatic detection of the pushing force. The detection process is fully automated, eliminating human error; it achieves uniformity and high repeatability of sample testing standards between batches. The generation of a complete pushing force curve helps in analyzing the peak value and fluctuation range of the insertion resistance.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0021] Figure 1 This is a schematic diagram of the overall structure of the lens insertion and pushing force detection device shown in some embodiments of this application;

[0022] Figure 2 yes Figure 1 A magnified view of part A in the image;

[0023] Figure 3 The force-stroke curve is generated by the lens insertion force detection device provided in this application embodiment.

[0024] The reference numerals in the figure:

[0025] 100 - Lens insertion and pushing force detection device; 101 - Housing.

[0026] 110 - Fixing mechanism, 111 - Base, 112 - First limiting structure, 1121 - Protrusion, 113 - Second limiting structure, 1131 - Lock, 1132 - Lock hook

[0027] 120-Pusher

[0028] 140-force sensor

[0029] 160 - Sample tank, 170 - Handle

[0030] 200 - Lens implant, 210 - Pressing end, 220 - Exporting end, 230 - Holding flange, 240 - Main body

[0031] Import direction - Z, second direction - Y, third direction - X. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Please refer to Figures 1 to 2 This application provides a lens insertion force detection device 100 for detecting the pushing force required for a lens inserter to deliver the lens, thereby evaluating the product quality and safety of the lens inserter. The lens insertion force detection device 100 includes: a housing 101, a fixing mechanism 110, a push rod 120, a driving mechanism, a force sensor 140, and a data processing mechanism. The fixing mechanism 110 is disposed outside the housing 101 and is used to fix the lens inserter along the insertion direction Z. The lens inserter has a pressing end 210 and a delivery end 220 disposed opposite to each other along the insertion direction Z. The push rod 120 is disposed outside the housing 101 and located on the side of the fixing mechanism 110 away from the delivery end 220 along the insertion direction Z. The drive mechanism is housed inside the housing 101. The push rod 120 is connected to the output end of the drive mechanism. The drive mechanism drives the push rod 120 to push the pressing end 210 along the guiding direction Z, so that the lens is exported from the export end 220. The force sensor 140 is connected to the push rod 120 and is used to detect the pushing force in real time. The data processing mechanism is electrically connected to the drive mechanism and the force sensor 140 and is used to generate a pushing force-stroke curve.

[0038] The lens insertion force detection device 100 provided in this application embodiment drives the push rod 120 along the insertion direction Z to simulate the pressing end 210, so that the lens is exported from the export end 220. It automatically simulates the pushing action, and the data processing mechanism generates a pushing force-stroke curve. Based on the first peak value of the pushing force-stroke curve, the pushing force required for the lens to be exported by the lens importer is obtained, thus achieving automatic detection of the pushing force. The detection process is fully automated, eliminating human error; it achieves uniformity and high repeatability of sample testing standards between batches. The generation of a complete pushing force curve helps in analyzing the peak value and fluctuation range of the insertion resistance.

[0039] To facilitate the description of the lens insertion and pushing force detection device 100 provided in this application, a rectangular coordinate system is established with the insertion direction Z parallel to the vertical direction, the direction where the insertion direction Z is located as the Z-axis, the second direction Y as the Y-axis, and the third direction X as the X-axis.

[0040] In one feasible implementation, the fixing mechanism 110 is detachably connected to the housing 101. This modular design allows for easy replacement of different models of the fixing mechanism 110, accommodating various sizes of lens implants. The detachable connection can be a threaded connection, such as bolts or screws. Alternatively, it can be a snap-fit ​​connection, such as a spring snap or hook structure. Specifically, the fixing mechanism 110 is designed with a spring-loaded tongue that engages with a slot on the housing 101, enabling quick assembly and disassembly. Another detachable connection method is a slide rail / slider connection. Specifically, the housing 101 is equipped with a guide rail, and the fixing mechanism 110 is inserted into the slider, sliding linearly and then locked by a positioning pin or knob for precise alignment. Other existing detachable connection methods can also be used, which will not be elaborated here.

[0041] In one feasible implementation, the fixing mechanism 110 is detachably connected to the housing 101 by a number of bolts. For example, the fixing mechanism 110 is locked in a pre-set threaded hole in the housing 101 by bolts. This bolted connection structure is stable, easy to disassemble, and facilitates the replacement of different fixing mechanisms 110. Furthermore, the bolts can be symmetrically arranged about the plane containing the input direction Z and the second direction Y. This significantly improves the overall performance and reliability of the detection device. This symmetrical arrangement firstly ensures that the fixing mechanism 110 has a uniform stress distribution when subjected to the pushing force, avoiding deformation or loosening caused by local stress concentration, thereby ensuring the accuracy and repeatability of the test data. Secondly, the symmetrical structure can effectively suppress vibrations in all directions, reduce the influence of external interference on the readings of the force sensor 140, and improve the accuracy of the pushing force-stroke curve of the data processing mechanism.

[0042] In one feasible implementation, the fixing mechanism 110 is detachably connected to the housing 101 via a slot and a locking block. Alternatively, the detachable connection can be a slide rail / slider connection. Specifically, the housing 101 can be provided with a slot, and the fixing mechanism 110 can be positioned within a locking block that engages with the slot. One end of the slot is open, and the other end is closed. The locking block slides into the slot from the open end, and the closed end limits its movement, thus fixing the fixing mechanism 110 to the housing 101. This structure facilitates insertion and assembly.

[0043] In one feasible implementation, the fixing mechanism 110 includes a base 111 and two first limiting structures 112 disposed opposite to each other along the introduction direction Z. Each first limiting structure 112 includes two first protrusions 1121 protruding from the base 111 along a second direction Y. The two first protrusions 1121 are disposed opposite to each other along a third direction X. Thus, the first limiting structures 112 are used to limit the movement of the lens implanter parallel to the introduction direction Z and the third direction X. Specifically, the lens implanter has a holding flange 230. When the lens implanter is placed in the fixing mechanism 110, the holding flange 230 is disposed along the third direction X and is engaged with the two first limiting structures 112 along the introduction direction Z, and the body 240 of the lens implanter is engaged between the two first protrusions 1121. Thus, in the direction parallel to the insertion direction Z: the spacing between the two first limiting structures 112 limits the longitudinal movement range of the implant, preventing vertical displacement during insertion; the two protrusions 1121, positioned opposite each other in the third direction X, form a "left-right" clamping action, preventing lateral movement of the lens implant and keeping it centered. Through this design, the lens implant is confined to the area enclosed by the protrusions 1121, and can only move along the second direction Y, meaning it can be inserted into the fixing mechanism 110 via the second direction Y.

[0044] In one feasible implementation, the fixing mechanism 110 further includes a second limiting structure 113. The second limiting structure 113 is used to limit the movement of the lens introducer along a direction parallel to the second direction Y. This further restricts the movement of the lens introducer, locking it and ensuring test stability. The second limiting mechanism can be a pin-type locking structure, achieving mechanical locking by manually inserting / removing a cylindrical pin; it can also be a latching structure, such as one containing a rotatable or sliding latch arm, achieving fixation by engaging a groove.

[0045] In one feasible implementation, the second limiting structure 113 is a latch 1131 structure, including a latch 1131 and a hook 1132 that cooperate with each other. The latch 1131 is fixedly connected to the base 111, and the hook 1132 is arranged along the third direction X. One end of the hook 1132 along the third direction X is hinged to the base 111, and the other end is connected to the latch 1131. The latch 1131 is fixedly installed on the base 111 and can be connected by bolts or welding; it is provided with a groove or a bayonet for forming a mechanical interlock with the hook 1132. The length direction of the hook 1132 is arranged along the third direction X, one end is connected to the base 111 through a hinge shaft to realize rotational movement; the other end is designed as an L-shaped snap-fit ​​part, which precisely matches the groove of the latch 1131. Furthermore, a torsion spring can be used to provide automatic rebound force.

[0046] In one feasible implementation, the fixing mechanism 110 may also be provided with a contour-guided limiting structure to better fix and limit the lens implant, which will not be elaborated here.

[0047] In one feasible implementation, the lens introduction and pushing force detection device 100 further includes a sample groove 160. The sample groove 160 is disposed along the introduction direction Z on the side of the fixing mechanism 110 near the exit end 220, and is used to hold the ejected lens sample. This facilitates the collection of the ejected lens, makes experiments more repeatable, and saves lens samples.

[0048] In one feasible implementation, a dustproof component is also included. This dustproof component is connected to the housing 101 via a hinge structure and is located on the same side as the fixing mechanism 110 and the push rod 120. The dustproof component can also be considered a dustproof door, and can be closed to prevent dust, similar to a common cabinet door. For ease of observation, the dustproof component can be made of a transparent material. The dustproof component can also be closed via magnetic attraction or other methods; these technologies are relatively existing and will not be elaborated upon here. The dustproof component protects the push rod 120 and the sensor, extending the equipment's lifespan.

[0049] In one feasible implementation, a handle is also included, which is installed along the input direction Z on the outer wall of the housing 101 on the side away from the output end 220. The handle facilitates handling and improves the portability of the equipment.

[0050] In one feasible implementation, the force sensor 140 can be a column-type sensor. For example, the column-type sensor LF-605 has a pressure detection range of 0-500 kg.

[0051] In one feasible implementation, the drive mechanism can be driven by a motor, which uses a gear reducer or direct drive to push a screw or slider to produce linear motion. Precise speed control can be achieved through a PWM (Pulse Width Modulation) or servo control system.

[0052] The steps for using the lens implantation force detection device 100 provided in this application are as follows:

[0053] The lens implant is fixed to the fixation module;

[0054] The drive mechanism drives push rod 120 to stop at the initial position, setting the pushing speed to 1.0 mm / s and the pushing stroke to 28 mm;

[0055] To start the test, push rod 120 begins to push the pressing end 210 of the lens introducer from the initial position along the Z direction of introduction at a set speed, so that the lens is exported from the export end 220.

[0056] During this period, force sensor 140 collects the changes in thrust in real time during the pushing process;

[0057] After the test is completed, the push force-stroke curve is generated through the data processing module.

[0058] The push force-stroke curve is as follows: Figure 3 As shown, the horizontal axis represents the stroke in mm, and the vertical axis represents the pushing force in N.

[0059] Depend on Figure 3 As can be seen, the push force-stroke curve has two peaks. The first peak represents the maximum push force when the lens is released, and the second peak represents the point where the end of the pressing end 210 contacts the end of the guiding end 220. By comparing the first peak, the push force of the lens introducer can be evaluated, that is, the performance of the lens introducer can be evaluated.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lens insertion and pushing force detection device, characterized in that, The lens insertion and pushing force detection device includes: a housing, a fixing mechanism, a push rod, a driving mechanism, a force sensor, and a data processing mechanism, wherein... The fixing mechanism is disposed outside the housing and is used to fix the lens introducer along the introduction direction. The lens introducer has a pressing end and an exporting end that are arranged opposite to each other along the introduction direction. The push rod is disposed outside the housing and located on the side of the fixing mechanism away from the outlet end along the inlet direction; The drive mechanism is located inside the housing, and the push rod is connected to the output end of the drive mechanism. The drive mechanism is used to drive the push rod to push the pressing end along the infeeding direction so that the lens can be exported from the export end. The force sensor is connected to the push rod and is used to detect the pushing force in real time; The data processing mechanism is electrically connected to the drive mechanism and the force sensor, and is used to generate a push force-stroke curve.

2. The lens insertion and pushing force detection device according to claim 1, characterized in that, The fixing mechanism is detachably connected to the box body.

3. The lens insertion and pushing force detection device according to claim 2, characterized in that, The fixing mechanism is detachably connected to the box body by several bolts.

4. The lens insertion and pushing force detection device according to claim 2, characterized in that, The fixing mechanism is detachably connected to the housing via slots and blocks.

5. The lens insertion and pushing force detection device according to claim 1, characterized in that, The fixing mechanism includes a base and two first limiting structures arranged opposite to each other along the introduction direction. Each first limiting structure includes two first protrusions protruding from the base along a second direction. The two first protrusions are arranged opposite to each other along a third direction. The first limiting structure is used to limit the movement of the lens introducer in a direction parallel to the introduction direction and the third direction. Wherein, the second direction is perpendicular to the import direction and the third direction, and the third direction is perpendicular to the import direction.

6. The lens insertion and pushing force detection device according to claim 5, characterized in that, The fixing mechanism further includes a second limiting structure, which is used to limit the movement of the lens introducer along a direction parallel to the second direction.

7. The lens insertion and pushing force detection device according to claim 6, characterized in that, The second limiting structure is a locking structure, including a locking buckle and a locking hook that cooperate with each other. The locking buckle is fixedly connected to the base, and the locking hook is arranged along the third direction. One end of the locking hook along the third direction is hinged to the base, and the other end is connected to the locking buckle.

8. The lens insertion and pushing force detection device according to claim 1, characterized in that, It also includes a sample slot, which is disposed along the inlet direction on the side of the fixing mechanism near the outlet end, for holding the withdrawn lens sample.

9. The lens insertion and pushing force detection device according to claim 1, characterized in that, It also includes a dustproof component, which is connected to the housing via a hinge structure and is located on the same side as the fixing mechanism and the push rod.

10. The lens insertion and pushing force detection device according to claim 1, characterized in that, It also includes a handle, which is installed on the outer wall of the housing on the side away from the outlet end along the inlet direction.

Images