An intelligent cutting device for ostomy base plate

Abstract

The application belongs to the technical field of ostomy bag cutting equipment, and provides an intelligent ostomy base plate cutting device, which comprises a machine body, a controller arranged on the machine body, a measuring unit arranged on the machine body and in communication connection with the controller, and a cutting unit arranged on the machine body and in communication connection with the controller; the measuring unit is used for measuring ostomy size information of a target patient and converting the size information into an electric signal to be transmitted to the controller; the controller is used for processing the electric signal output by the measuring unit and generating a corresponding control signal to be transmitted to the cutting unit; and the cutting unit is used for cutting the base plate of a target ostomy bag according to the control signal output by the controller. The intelligent ostomy base plate cutting device provided by the application solves the problems of low precision and poor efficiency of traditional manual cutting.

Description

Technical Field

[0001] This invention relates to the field of ostomy bag cutting equipment technology, specifically to an intelligent cutting device for ostomy base. Background Technology

[0002] When using ostomy bags clinically, the base plate needs to be cut according to the actual size of the patient's stoma. Traditional manual measurement and cutting suffers from low accuracy, low efficiency, and a high risk of error. However, existing cutting devices mostly adopt a layout with the bag body at the bottom and the base plate facing upwards, which can easily scratch the bag body during the cutting process. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the purpose of this invention is to provide an intelligent stoma chassis cutting device to solve or alleviate the above-mentioned technical problems in the prior art.

[0004] To achieve the above objectives, the present invention provides an intelligent stoma baseplate cutting device, comprising: Organism; The controller is mounted on the machine body; A measuring unit disposed on the body and communicatively connected to the controller; and A shearing unit is installed on the machine body and communicates with the controller; The measuring unit is used to measure the stoma size information of the target patient and convert the size information into an electrical signal and transmit it to the controller. The controller is used to process the electrical signals output by the measuring unit and generate corresponding control signals to be transmitted to the shearing unit. The cutting unit is used to cut the base of the target ostomy bag according to the control signal output by the controller.

[0005] Furthermore, the shearing unit includes: The positioning seat installed on the body has multiple vacuum adsorption holes arranged in an array on its top side wall; The suction device, which is installed on the body and communicates with the controller, has its air inlet connected to the vacuum adsorption hole. A shearing shaft is arranged longitudinally, with its bottom end rotatably connected to the machine body and its top end extending freely upwards. A first slider that is slidably connected to the shearing axis along the longitudinal direction; The first connecting rod has its first end hinged to the first slider and its second end extending freely. The second connecting rod has a first end located below the first slider and hinged to the shearing shaft, and a second end hinged to the middle of the first connecting rod. A shearing blade is disposed at the second end of the first connecting rod with the blade facing downwards; A first drive unit communicatively connected to the controller is used to drive the shear shaft to rotate according to a received control signal; and A second drive device, which is communicatively connected to the controller, is used to drive the first slider to move along the shearing axis according to the received control signal.

[0006] Furthermore, the shearing unit also includes a blade posture maintaining mechanism, which is configured to: forcibly maintain the posture of the shearing blade constant throughout the entire process of continuous adjustment of the shearing radius, so that the blade is always vertically downward and maintains a stable fitting angle with the bottom plate of the ostomy bag.

[0007] Furthermore, the blade attitude maintenance mechanism includes: An attitude maintaining rod has its axis parallel to the axis of the shearing shaft. The second end of the first connecting rod is hinged to the attitude maintaining rod, and the shearing blade is disposed at the bottom end of the attitude maintaining rod. The second slider is slidably connected to the attitude maintaining rod in a longitudinal direction; and The third link has its first end fixedly connected to the second end of the second link, and its second end hinged to the second slider. Let A be the hinge point of the first end of the first connecting rod, B be the hinge point of the second end, C be the hinge point of the first end of the second connecting rod, D be the hinge point of the second end of the second connecting rod, and E be the hinge point of the second end of the third connecting rod. Then, points A, B, and D are collinear, and point D is located at the midpoint of the line connecting points A and B. Points C, D, and E are collinear, and point D is located at the midpoint of the line connecting points C and E.

[0008] Furthermore, the shearing unit also includes a shearing force compensation mechanism, which is configured to automatically increase the downward pressing force on the shearing blade as the cutting radius of the shearing blade continuously changes from small to large throughout the entire process, so as to dynamically compensate for the attenuation of cutting force caused by the increase in the length of the lever arm.

[0009] Furthermore, the shearing blade and the attitude maintaining rod are slidably connected longitudinally; The shearing force compensation mechanism includes a spring, with a first end connected to the second slider and a second end connected to the shearing blade. In its natural state, the spring applies a downward elastic force to the shearing blade.

[0010] Furthermore, the positioning seat is slidably connected to the body along the longitudinal direction; The shearing unit further includes a third driving device, which is disposed on the machine body and communicates with the controller. The third driving device is drivenly connected to the positioning seat to drive the positioning seat to move longitudinally.

[0011] Furthermore, the third driving device is an electric push rod, which is fixedly installed on the machine body, and its power output shaft is connected to the positioning seat.

[0012] Furthermore, the measurement unit is a structured light 3D scanner.

[0013] The beneficial effects of this invention are: The intelligent cutting device for ostomy base provided by this invention employs a variable radius cutting mechanism consisting of a cutting shaft, a first slider, a first connecting rod, and a second connecting rod. With the cooperation of a first motor and a second motor to control rotation and radial displacement respectively, the cutting blade can continuously cut circular or non-circular holes of any size in a single operation. This solves the problems of low precision, poor efficiency, and weak adaptability caused by the reliance on manual tracing or fixed molds in traditional ostomy bag cutting.

[0014] By adding a double parallelogram linkage mechanism consisting of an attitude maintaining rod, a second slider, and a third connecting rod to the shearing unit, and strictly limiting the geometric collinearity and midpoint relationship of hinge points A, B, C, D, and E, the shearing blade maintains a vertical posture throughout its entire stroke range, and the blade edge is always perpendicular to the base plane. This solves the quality problems such as burrs, tears, or incomplete cuts caused by blade tilt during large-diameter cutting.

[0015] By making the shearing blade and the attitude maintenance rod longitudinally sliding and introducing a spring to apply a downward preload to the shearing blade, the shearing force can automatically increase as the cutting radius increases, thus solving the technical problem of shearing force attenuation caused by the increase of the lever arm, resulting in incomplete cutting of thick or multi-layer chassis.

[0016] Because the positioning seat is slidably connected to the machine body along the longitudinal direction and is driven by an electric push rod to achieve a staged lifting action, the base of the ostomy bag can be lifted to the cutting position after the cutting mechanism is fully extended, thus solving the safety hazards of interference between the cutting arm and the base during the extension process, which may lead to material displacement or equipment jamming. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a perspective view of the intelligent stoma chassis cutting device provided in Embodiment 1 of the present invention; Figure 2 This is a perspective view of the intelligent stoma chassis cutting device provided in Embodiment 2 of the present invention; Figure 3 for Figure 1 and Figure 2 A cross-sectional view of the intelligent cutting device for the stoma chassis shown; Figure 4 for Figure 1 and Figure 2 A three-dimensional view of the internal structure of the intelligent cutting device for the stoma chassis shown; Figure 5 for Figure 2 A structural view of the measuring unit of the intelligent cutting device for the stoma chassis shown; Figure 6 for Figure 1 and Figure 2 The diagram shows the structural view of the intelligent cutting device for the stoma base during the cutting of the stoma bag; Figure 7 for Figure 1 The circuit diagram shown is of the intelligent cutting device for the stoma base plate. Figure 8 for Figure 2 The circuit diagram shown is of the intelligent cutting device for the stoma base plate.

[0019] Figure label: 100. Body; 200. Controller; 310. Structured light 3D scanner; 321. Medical-grade silicone encapsulation layer; 322. Flexible pressure sensor array layer; 410. Positioning seat; 411. Vacuum suction hole; 420. Suction device; 430. Shearing shaft; 441. First slider; 442. First connecting rod; 443. Second connecting rod; 444. Shearing blade; 451. Attitude maintaining rod; 452. Second slider; 453. Third connecting rod; 460. Spring; 471. First motor; 481. Lead screw; 482. Second motor; 491. Electric push rod; 510. Chassis; 520. Bag body. Detailed Implementation

[0020] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0021] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Example 1 like Figures 1-8 As shown, the present invention provides an intelligent cutting device for stoma chassis, including a body 100, a controller 200, a measuring unit 310, and a cutting unit.

[0027] The controller 200 is fixedly installed on the body 100 and serves as the central processing unit of the entire system; the measuring unit 310 is electrically connected to the controller 200 and is used to collect the size information of the patient's stoma, such as the actual contour or diameter data; the cutting unit is also installed on the body 100 and is controlled by the controller 200 to perform the cutting action.

[0028] During operation, the user uses the measuring unit 310 to acquire the size information of the patient's stoma. The measuring unit converts the acquired size information into a corresponding electrical signal and transmits it to the controller. The controller 200 analyzes and processes the electrical signal, and at the same time generates a corresponding control signal, which is transmitted to the shearing unit to drive the shearing unit to precisely open the base plate 510 of the stoma bag.

[0029] This structure automates the entire process from "measurement to calculation to cutting," avoiding the errors and time-consuming nature of traditional manual tracing and cutting, and significantly improving the sealing, comfort, and efficiency of the ostomy bag.

[0030] Example 2 like Figures 1-4 and Figure 6 As shown, in this embodiment, the shearing unit includes a positioning seat 410, a suction device 420, a shearing shaft 430, a first slider 441, a first connecting rod 442, a second connecting rod 443, a shearing blade 444, a first driving device, and a second driving device.

[0031] The positioning seat 410 is located on the top of the machine body 100, and its surface is provided with multiple vacuum adsorption holes 411. The suction device 420 is installed on the machine body 100, and the air inlet of the suction device 420 is connected to the vacuum adsorption holes 411. In use, the suction device 420 creates a negative pressure, thereby firmly adsorbing and flattening the base plate 510 of the flexible ostomy bag, preventing the material from slipping or wrinkling during the cutting process.

[0032] The shearing shaft 430 serves as the main rotating shaft, arranged vertically, with its bottom end rotatably connected to the machine body 100 and its top end extending freely. The first slider 441 is slidably connected to the shearing shaft 430 along the longitudinal direction, and the first slider 441 can slide up and down along the axis of the shearing shaft 430. The first end of the first connecting rod 442 is hinged to the first slider 441, and the second end is connected to the shearing blade 444.

[0033] One end of the second connecting rod 443 is hinged to the lower part of the shearing shaft 430, and the other end is hinged to the middle part of the first connecting rod 442, thus forming a variable radius shearing mechanism. The first driving device is electrically connected to the controller 200 and is used to drive the shearing shaft 430 to rotate, achieving 360° circular motion. The second driving device is communicatively connected to the controller 200 and is used to drive the first slider 441 to rise and fall, thereby adjusting the tilt angle of the first connecting rod 442, and thus changing the radial position of the shearing blade 444 to match different stoma diameters.

[0034] In use, the pre-set center hole of the ostomy bag is fitted into the shearing shaft 430, allowing the shearing shaft 430 to extend into the ostomy bag. The shearing shaft 430 acts as a support mandrel, expanding the ostomy bag body 520 from the inside out, separating the bag body 520 from the base plate 510. Subsequently, the suction device 420 is activated, creating negative pressure at the vacuum suction hole, thereby firmly adsorbing and flattening the base plate 510 of the flexible ostomy bag.

[0035] The shearing blade 444 is mounted on the outside of the shearing shaft 430 via a linkage mechanism consisting of the first link 442 and the second link 443, and is located inside the ostomy bag. When the controller 200 sets the target cutting path based on the measurement results, the second motor 482 drives the first slider 441 to rise and fall along the shearing shaft 430, adjusting the tilt angle of the first link 442, thereby controlling the radial position of the shearing blade 444; subsequently, the first motor 471 drives the shearing shaft 430 to rotate one revolution, and the shearing blade 444 performs a circular cut from the inside to the outside of the chassis 510 inside the ostomy bag.

[0036] The entire cutting process is completed inside the ostomy bag. The shearing force acts on the inner side of the base plate 510, while the bag body 520 is effectively supported by the shearing shaft 430 and isolated from the shearing area. In contrast, traditional ostomy bag cutting devices typically apply shearing force from the outside of the base plate 510. The cutter needs to penetrate the base plate 510 and may squeeze or scrape the outer wall of the bag body 520, which can easily cause wrinkles, tears, or damage to the sealing layer of the bag body 520, thereby affecting the leak-proof performance and service life of the ostomy bag. This embodiment, through the "internal support + internal cutting" mechanism, not only ensures smooth and regular cutting edges, but more importantly, completely avoids mechanical interference and potential damage to the bag body 520 of the ostomy bag, significantly improving the integrity of the finished product and the safety of clinical use.

[0037] In addition, the design facilitates automated operation without the need for manual support or flipping of the ostomy bag, improving operational convenience and consistency. Furthermore, through the coordinated control of two degrees of freedom, holes of any size and shape can be cut in a single operation without the need to change molds or make manual adjustments, thus improving the equipment's versatility and ease of operation.

[0038] Example 3 like Figures 1-4 and Figure 6 As shown, in this embodiment, the shearing unit also includes a blade posture maintaining mechanism. The blade posture maintaining mechanism is configured to: forcibly maintain the posture of the shearing blade 444 constant throughout the entire process of continuous adjustment of the shearing radius, so that the blade is always vertically downward and maintains a stable fitting angle with the base 510 of the ostomy bag.

[0039] This design, through a blade posture maintenance mechanism, ensures that the blade posture remains constant throughout the entire process of continuous adjustment of the cutting radius. This keeps the blade vertically downward and maintains a stable contact angle with the base plate 510 of the ostomy bag, preventing the blade from tilting, deflecting, swinging, or curling. This ensures that the cut is round, smooth, and burr-free, fundamentally solving technical defects such as decreased cutting quality, damage to the bag body 520, and incomplete cuts caused by changes in blade posture.

[0040] Example 4 like Figures 1-4 and Figure 6 As shown, in this embodiment, the blade attitude maintenance mechanism includes an attitude maintenance rod 451, a second slider 452, and a third connecting rod 453.

[0041] The attitude maintaining rod 451 is parallel to the axis of the shearing shaft 430 and is hinged to the second end of the first connecting rod 442. The shearing blade 444 is mounted on the bottom end of the attitude maintaining rod 451. The second slider 452 is slidably mounted on the attitude maintaining rod 451.

[0042] The first end of the third link 453 is fixedly connected to the second end of the second link 443, and the second end is hinged to the second slider 452.

[0043] The key geometric relationships are as follows: hinge points A (the hinge point between the first link 442 and the first slider 441), B (the hinge point between the first link 442 and the attitude maintaining rod 451), and D (the hinge point between the second link 443 and the first link 442) are collinear, and D is the midpoint of AB; simultaneously, C (the hinge point between the second link 443 and the shear shaft 430), D, and E (the hinge point between the third link 453 and the second slider 452) are collinear, and D is the midpoint of CE. This constitutes a double parallelogram linkage mechanism.

[0044] The blade posture maintenance mechanism, through parallelogram geometric constraints, ensures that the posture maintenance rod 451 remains parallel to the shearing axis 430 throughout the entire process of adjusting the shearing radius. This keeps the posture of the shearing blade 444 constant, with the blade always perpendicularly downward and in contact with the base 510 of the ostomy bag, preventing the shearing blade 444 from tilting, deflecting, or swaying. It also ensures that the cutting force is transmitted vertically and evenly, preventing the base 510 from being pulled and deformed and the bag body 520 from being scratched. This ensures that the cut holes are round and smooth, with accurate dimensions, improving the cutting quality and safety of use.

[0045] Example 5 like Figure 3 and Figure 6 As shown, in this embodiment, the shearing unit further includes a shearing force compensation mechanism, which is configured to automatically increase the downward pressing force on the shearing blade 444 as the cutting radius of the shearing blade 444 continuously changes from small to large throughout the entire process, so as to dynamically compensate for the attenuation of cutting force caused by the increase of the lever arm.

[0046] This design, through a shear force compensation mechanism, automatically increases the downward pressing force on the shear blade as the cutting radius of the shear blade continuously changes from small to large throughout the entire process. This dynamically compensates for the attenuation of cutting force caused by the increase in the lever arm, ensuring that the effective shear force of the shear blade on the base plate 510 of the ostomy bag remains stable and consistent at any radius position. This completely solves the technical defects such as incomplete cutting, rough edges, and deformation of the base plate 510 when cutting with a large radius.

[0047] Example 6 like Figure 3 and Figure 6 As shown, in this embodiment, the shear force compensation mechanism includes a spring 460. One end of the spring 460 is connected to the second slider 452, and the other end is connected to the shear blade 444. In its natural state, the spring 460 applies a continuous downward preload to the shear blade 444.

[0048] When the cutting radius increases, the first link 442 tends to be horizontal, which reduces the normal component of the shearing blade 444 on the chassis 510. At this time, the third link 453 drives the second slider 452 to move down synchronously, compressing the spring 460 and increasing its elastic force, thereby automatically increasing the pressure of the shearing blade 444 on the material.

[0049] This mechanism enables adaptive adjustment of shear force, ensuring a stable and clean cutting effect across the entire size range from small to large holes, avoiding cutting failures or material stretching and deformation due to insufficient force. It is especially suitable for the base plate 510 of ostomy bags made of thicker or multi-layered composite materials.

[0050] Example 7 like Figure 3 and Figure 6 As shown, in this embodiment, the second drive device includes a lead screw 481 and a second motor 482.

[0051] The lead screw 481 is coaxially arranged and rotatably connected to the shearing shaft 430. The first slider 441 has a threaded hole, forming a precision threaded pair with the lead screw 481. The second motor 482 is fixed on the shearing shaft 430, and its output shaft is connected to the lead screw 481 through a gear or coupling, thereby driving the lead screw 481 to rotate. When the lead screw 481 rotates, the first slider 441 moves precisely along the axial direction, and the displacement is precisely controlled by the motor rotation angle. This transmission method has the advantages of high rigidity, low backlash, and high repeatability, and can achieve micron-level radius adjustment, ensuring that the cutting diameter is highly consistent with the measured value, meeting the stringent clinical requirements for personalized fitting.

[0052] Example 8 like Figure 3 and Figure 6 As shown, in this embodiment, the first driving device includes a first motor 471.

[0053] The first motor 471 is fixedly installed inside the machine body 100. Its output shaft is connected to the bottom of the shearing shaft 430 via a gear set or synchronous belt to directly drive the shearing shaft 430 to rotate. This design is compact, responsive, and has stable torque, supporting continuous 360° rotation without dead angles. Combined with the second drive device, it can realize a spiral or concentric circle cutting path, which is not only suitable for the efficient processing of standard circular ostomies, but also for the processing of non-circular ostomies.

[0054] Example 9 like Figure 3 , Figure 4 and Figure 6 As shown, in this embodiment, the positioning seat 410 is slidably connected to the body 100 along the longitudinal direction, and a third driving device is added. The third driving device is disposed on the body 100, and the output shaft of the third driving device is connected to the positioning seat 410 to drive the positioning seat 410 to move longitudinally.

[0055] During operation, firstly, the third drive unit lowers the positioning seat 410 to a low position, facilitating the user to place the ostomy bag base plate 510 on it. Then, under the command of the controller 200, the shearing blade 444 extends to the target radius. Once the mechanism is in position, the third drive unit drives the positioning seat 410 to rise, bringing the base plate 510 into contact with the shearing blade 444 and initiating cutting. This step-by-step operation effectively prevents the shearing arm from scraping or lifting the base plate 510 during extension, preventing material misalignment or equipment jamming, thus improving operational safety and reliability.

[0056] Specifically, in this embodiment, the third driving device is an electric actuator 491. The cylinder of the electric actuator 491 is fixed inside the machine body 100, and the end of the actuator is connected to the bottom of the positioning seat 410. Its advantages are controllable stroke, stable thrust, fast response, and the lifting height can be precisely set by the controller 200 to achieve timing coordination with the shearing unit's actions. In addition, the electric actuator 491 has a simple structure, low maintenance cost, and is suitable for long-term stable operation in a medical environment.

[0057] Of course, in other embodiments, the third driving device can also be a linear drive source such as a cylinder, hydraulic cylinder, or electro-hydraulic actuator.

[0058] Example 9 like Figure 1 and Figure 7 As shown, in this embodiment, a structured light 3D scanner is used as the measurement unit 310. This device reconstructs a three-dimensional point cloud model of the stoma area by projecting a specific coded grating and capturing deformed stripes using a camera, thereby extracting a precise contour curve. Its advantages include being non-contact, pressure-free, fast (typically <3 seconds), and highly accurate (up to ±0.1 mm), unaffected by skin color or humidity. It is particularly suitable for patients with limited mobility, fragile skin, or those requiring frequent stoma bag changes, significantly reducing discomfort and infection risks during the measurement process. Simultaneously, it provides digital cutting guidelines for complex stomas (such as elliptical or multi-leaf shaped stomas), expanding the device's clinical applicability.

[0059] Example 10 like Figure 2 , Figure 5 and Figure 8 As shown, in this embodiment, the measuring unit is an ultra-thin multilayer composite structure with a total thickness ≤1.2 mm, comprising, from the outside in, a medical-grade silicone encapsulation layer 321 and a flexible pressure sensor array layer 322. The silicone layer possesses biocompatibility, softness, and sealing properties, allowing it to closely conform to irregular stoma edges without causing pressure pain; the flexible pressure sensor array layer 322 integrates high-density (≥100 sensors / cm²) sensors. 2 The miniature pressure sensing unit (≤0.8 mm × 0.8 mm) can capture the pressure distribution around the stoma in real time. The controller 200 determines the stoma boundary by analyzing the pressure peak area and then fits the optimal cutting contour. This approach is particularly suitable for stomas with irregular shapes, edema, or postoperative sensitivity, achieving high-precision, non-invasive, and comfortable personalized measurements, which is significantly superior to traditional ruler or template methods.

[0060] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An intelligent cutting device for stoma chassis, characterized in that, include: Body (100); A controller (200) is mounted on the body (100); A measuring unit disposed on the body (100) and communicatively connected to the controller (200); and A shearing unit is disposed on the body (100) and communicates with the controller (200); The measuring unit is used to measure the stoma size information of the target patient and convert the size information into an electrical signal and transmit it to the controller (200). The controller (200) is used to process the electrical signal output by the measuring unit and generate a corresponding control signal to be transmitted to the shearing unit; The cutting unit is used to cut the base of the target ostomy bag according to the control signal output by the controller (200).

2. The intelligent cutting device for stoma base as described in claim 1, characterized in that, The shearing unit includes: The positioning seat (410) provided on the body (100) has multiple vacuum adsorption holes (411) arranged in an array on its top side wall. A suction device (420) is installed on the body (100) and communicates with the controller (200), and its air inlet is connected to the vacuum adsorption hole (411); A shearing shaft (430) is arranged longitudinally, with its bottom end rotatably connected to the machine body (100) and its top end extending freely upward; A first slider (441) is slidably connected longitudinally to the shearing shaft (430). The first connecting rod (442) has its first end hinged to the first slider (441) and its second end extended freely; The second link (443) has its first end located below the first slider (441) and hinged to the shear shaft (430), and its second end hinged to the middle of the first link (442); A shearing blade (444) is disposed at the second end of the first connecting rod (442) with the blade facing downward; A first drive unit communicatively connected to the controller (200) is used to drive the shear shaft (430) to rotate according to a received control signal; and A second drive device, which is communicatively connected to the controller (200), is used to drive the first slider (441) to move along the shear axis (430) according to the received control signal.

3. The intelligent cutting device for stoma base according to claim 2, characterized in that, The shearing unit also includes a blade posture maintaining mechanism, which is configured to: forcibly maintain the posture of the shearing blade (444) constant throughout the entire process of continuous adjustment of the shearing radius, so that the blade is always vertically downward and maintains a stable fitting angle with the bottom plate of the ostomy bag.

4. The intelligent cutting device for stoma base according to claim 3, characterized in that, The blade attitude maintenance mechanism includes: The attitude maintaining rod (451) has its axis parallel to the axis of the shearing shaft (430), the second end of the first connecting rod (442) is hinged to the attitude maintaining rod (451), and the shearing blade (444) is disposed at the bottom end of the attitude maintaining rod (451). The second slider (452) is slidably connected longitudinally to the attitude maintaining rod (451); and The first end of the third link (453) is fixedly connected to the second end of the second link (443), and the second end is hinged to the second slider (452); Let A be the hinge point of the first end of the first link (442) and B be the hinge point of the second end; let C be the hinge point of the first end of the second link (443) and D be the hinge point of the second end; and let E be the hinge point of the second end of the third link (453). Then, points A, B and D are collinear and point D is located at the midpoint of the line connecting points A and B. Points C, D and E are collinear and point D is located at the midpoint of the line connecting points C and E.

5. The intelligent cutting device for stoma base according to claim 4, characterized in that, The shearing unit also includes a shearing force compensation mechanism, which is configured to automatically increase the downward pressing force on the shearing blade (444) as the cutting radius of the shearing blade (444) continuously changes from small to large throughout the entire process, so as to dynamically compensate for the attenuation of cutting force caused by the increase of the lever arm.

6. The intelligent cutting device for stoma base according to claim 5, characterized in that, The shearing blade (444) and the attitude maintaining rod (451) are slidably connected in the longitudinal direction; The shear force compensation mechanism includes a spring (460), the first end of which is connected to the second slider (452), and the second end of which is connected to the shear blade (444). In its natural state, the spring (460) applies a downward elastic force to the shear blade (444).

7. The intelligent stoma base cutting device according to any one of claims 2-6, characterized in that, The positioning seat (410) is slidably connected to the body (100) in the longitudinal direction; The shearing unit further includes a third driving device, which is disposed on the body (100) and communicates with the controller (200). The third driving device is connected to the positioning seat (410) for driving the positioning seat (410) to move longitudinally.

8. The intelligent cutting device for stoma base according to claim 7, characterized in that, The third driving device is an electric push rod (491), which is fixedly installed on the body (100), and its power output shaft is connected to the positioning seat (410).

9. The intelligent stoma base cutting device according to claim 1, 2, 3, 4, 5, 6 or 8, characterized in that, The measurement unit is a structured light 3D scanner (310).

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