Negative pressure drainage sponge puncher
By designing an automated negative pressure drainage sponge punching machine, the problems of uneven punching and low efficiency were solved, achieving precise sponge punching and efficient sponge utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YIJIABAO BIOMATERIAL CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-24
AI Technical Summary
Existing methods for perforating negative pressure drainage sponges suffer from problems such as uneven perforation, mismatched depths, significant sponge damage, and low perforation efficiency.
A negative pressure drainage sponge punching machine was designed, comprising a frame, an intelligent control system, a pressing device, a punching device, and a positioning device, to achieve automated punching. The intelligent control system monitors the process in real time and drives the pusher blade through a punching motor and a cylinder for precise punching.
It achieves highly automated and precise drilling, suitable for sponge blocks of different thicknesses and hardnesses, reducing sponge damage and scrap rates, and improving drilling efficiency.
Smart Images

Figure CN224544781U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device manufacturing technology, and in particular to a negative pressure drainage sponge punching machine. Background Technology
[0002] Negative pressure wound therapy is the core application of negative pressure wound treatment technology. Its core technology utilizes the microporous structure of medical sponge dressings to evenly transmit negative pressure, continuously clearing necrotic tissue and inflammatory exudate from the wound. The negative pressure environment can increase local blood perfusion by 2-3 times, stimulate the secretion of vascular endothelial growth factor, and promote capillary regeneration. Simultaneously, the created sealed space can block the invasion of external bacteria and maintain the balance of wound moisture.
[0003] Existing negative pressure drainage sponges are perforated manually using a hand drill. Even when a drilling machine is used, it is a manually operated instrument and cannot be automated. This method suffers from problems such as uneven perforation, significant damage to the sponge, and low perforation efficiency. Summary of the Invention
[0004] In view of the aforementioned shortcomings of the prior art, the technical problem to be solved by this utility model is that existing methods of drilling negative pressure drainage sponges typically involve manual drilling or manually pushing the drill bit of a drilling machine, which suffers from problems such as uneven drilling, mismatched depths, significant sponge damage, and low drilling efficiency. Therefore, this utility model provides a negative pressure drainage sponge drilling machine that can achieve automated drilling. It boasts a high degree of automation, with a positioning device that ensures precise drilling positioning and depth. Furthermore, it is highly adaptable, suitable for sponge blocks of various thicknesses and hardnesses, and possesses a high degree of intelligence.
[0005] To achieve the above objectives, this utility model provides a negative pressure drainage sponge punching machine, including a frame, an intelligent control system, a pressing device, a punching device, and a positioning device. The frame provides support and a mounting foundation for the entire device. The intelligent control system is installed inside the frame. The pressing device, punching device, and positioning device are installed on the working platform of the frame. The punching device and the pressing device are located at both ends of the working platform, and the positioning device is located on one side of the punching device. The intelligent control system controls the operation of the pressing device, the positioning device, and the punching device, and monitors the operating status and punching process of the device in real time.
[0006] The clamping device includes a sponge placement area for placing medical sponges to be punched; the clamping device includes an upper pressure plate, a lower pressure plate, a clamping drive device, and a pressure plate positioning device. The lower pressure plate is fixed on the working platform of the frame and has a downwardly recessed sponge placement area. The clamping drive device is arranged perpendicularly to the lower pressure plate, and the upper pressure plate is fixedly connected to the clamping drive device, which controls the up and down movement of the upper pressure plate. The clamping drive device is communicatively connected to the intelligent control system, and the pressure plate positioning device is located around the lower pressure plate.
[0007] The punching device includes a spindle, a punching motor, a cylinder, and a pusher. The pusher is fixed on the spindle, and the punching motor is connected to the cylinder. The cylinder pushes the pusher to run, and the pusher smoothly punctures and cuts the middle layer of the sponge.
[0008] Furthermore, the intelligent control system includes an industrial control computer, a PLC controller, and various sensors. The industrial control computer is connected to the PLC controller, and the PLC controller is connected to various sensors to receive signals transmitted by the sensors.
[0009] Furthermore, the sponge placement area of the lower pressure plate is suitable for placing sponge blocks of various sizes.
[0010] Furthermore, the pressure plate positioning device includes positioning posts and positioning holes. The positioning posts are arranged around the lower pressure plate, and the positioning holes are arranged on the upper pressure plate to cooperate with the positioning posts.
[0011] Furthermore, the punching device also includes a slide, and the pusher is also provided with a pin, which moves along the slide.
[0012] Furthermore, the positioning device includes a pusher limiting screw, which is located at the end of the pusher and is used to limit the length of the pusher extension.
[0013] Furthermore, the various sensors include a rising position sensor and a falling position sensor for the pressing drive device. The rising position sensor is located on the upper part of the pressing drive device, and the falling position sensor is located at the lower end of the lower pressure plate.
[0014] Furthermore, the lower pressure plate is equipped with anti-slip texture.
[0015] Technical effect
[0016] This utility model provides a negative pressure drainage sponge punching machine, which can realize automated punching. It has a high degree of automation, and the punching device is equipped with a positioning device. Its punching positioning and depth are accurate enough, and it has strong adaptability. It is suitable for sponge blocks of various thicknesses and hardnesses, and has a high degree of intelligence.
[0017] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present invention.
[0019] Figure 2 This is a simplified schematic diagram of the internal parts of a preferred embodiment of the present invention. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] In the following description, specific details, such as particular internal procedures and techniques, are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention may be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of the present invention with unnecessary detail.
[0022] like Figure 1-2 As shown, this utility model provides a negative pressure drainage sponge punching machine, including a frame 1, an intelligent control system, a pressing device 3, a punching device 2, and a positioning device. The frame provides support and a foundation for the entire device. The intelligent control system is installed inside the frame. The pressing device, punching device, and positioning device are installed on the working platform of the frame. The punching device and the pressing device are located at both ends of the working platform, and the positioning device is located on one side of the punching device. The intelligent control system controls the operation of the pressing device, the positioning device, and the punching device, and monitors the operating status and punching process of the device in real time. The pressing device includes a sponge placement area for placing the medical sponge to be punched.
[0023] The intelligent control system includes an industrial control computer, a PLC controller, and various sensors. The industrial control computer communicates with the PLC controller, and the PLC controller is connected to various sensors to receive data transmitted from them.
[0024] The pressing device includes an upper pressure plate, a lower pressure plate, a pressing drive device, and a pressure plate positioning device. The lower pressure plate is fixed to the working platform of the frame and has a downwardly recessed sponge placement area. The pressing drive device is arranged perpendicularly to the lower pressure plate, and the upper pressure plate is fixedly connected to the pressing drive device, which controls the up and down movement of the upper pressure plate. The pressing drive device is communicatively connected to a PLC controller, and the pressure plate positioning devices are located around the lower pressure plate. The sponge placement area can hold sponges of various sizes, including 20x20, 20x15, 15x10, and 15x5 cm. Multiple sponges can be placed in the sponge placement area for perforation, or a single piece of sponge can be perforated and then cut. The lower pressure plate has anti-slip textures.
[0025] The pressure plate positioning device includes positioning posts and positioning holes. The positioning posts are arranged around the lower pressure plate, and the positioning holes are arranged on the upper pressure plate to cooperate with the positioning posts.
[0026] The clamping device prevents the sponge from shifting when it is punched, making it easier to control the punching accuracy and greatly reducing the scrap rate.
[0027] The punching device includes a spindle, a punching motor, a cylinder, and a pusher. The pusher is fixed to the spindle, and the punching motor is connected to the cylinder. The cylinder drives the pusher to move, and the pusher smoothly cuts the middle layer of the sponge, resulting in no debris after cutting. The pusher blade cuts the sponge, and when it retracts, it forms a small incision, producing neither debris nor obvious holes. Later, during tube insertion, the sponge is expanded to include the drainage tube. This method allows the sponge to wrap the drainage tube more tightly, enabling exudate and blood to enter the drainage tube through the sponge, resulting in better absorption.
[0028] The punching device also includes a slide, and the pusher is equipped with a pin, which moves along the slide.
[0029] The positioning device includes a pusher limiting screw, which is located at the end of the pusher and used to adjust the extension length of the pusher. Simultaneously, the end of the pusher has multiple through holes, which, in conjunction with the limiting screw, allow the extension length of the pusher to be adjusted and fixed as needed.
[0030] The punching device also includes pusher rod positioning holes. The pusher is pushed out from the pusher rod positioning holes to limit the spacing of the pusher punching holes. In this embodiment, there are 4 pusher rod positioning holes with a spacing of 5cm. The distance between the pusher on both sides and the edge of the sponge placement area is set to 2.5cm.
[0031] In this embodiment, the outer side of the tail end of the lower pressure plate includes a blade baffle to block the blade head of the pusher and prevent accidental injury.
[0032] The various sensors include a rising position sensor and a falling position sensor for the clamping drive device. The rising position sensor is located on the upper part of the clamping drive device, and the falling position sensor is located at the lower end of the lower pressure plate.
[0033] The operation process of a negative pressure drainage sponge punching machine in this embodiment is as follows: Before starting, observe the power indicator light (on) and the working position indicator light. Place the sponge in the machine, press the start button with both hands, the controller receives the start signal, and outputs a signal to control the pressing cylinder to press down. After the pressing cylinder sensor reaches the bottom, there is a 3-second delay (the delay program can be changed), and then the punching cylinder begins to extend. At this time, the pusher cuts into the sponge, forming a cut. After the extension sensor lights up, there is a 5-second pause (the delay program can be changed), and the punching cylinder automatically retracts. After retracting to the bottom, the pressing cylinder returns to the working position. This completes one cycle.
[0034] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A negative pressure drainage sponge punching machine, characterized in that, The device includes a frame, an intelligent control system, a clamping device, a drilling device, and a positioning device. The frame provides support and a mounting foundation for the entire device. The intelligent control system is installed inside the frame. The clamping device, the drilling device, and the positioning device are mounted on the working platform of the frame. The drilling device and the clamping device are located at opposite ends of the working platform, and the positioning device is located on one side of the drilling device. The intelligent control system controls the operation of the clamping device, the positioning device, and the drilling device, and monitors the operating status and drilling process of the device in real time. The pressing device includes a sponge placement area for placing medical sponges to be punched; the pressing device includes an upper pressing plate, a lower pressing plate, a pressing drive device, and a pressing plate positioning device. The lower pressing plate is fixed to the working platform of the frame and has a downwardly recessed sponge placement area. The pressing drive device is arranged perpendicularly to the lower pressing plate. The upper pressing plate is fixedly connected to the pressing drive device and is controlled by the pressing device to move up and down. The pressing drive device is communicatively connected to the intelligent control system, and the pressing plate positioning device is located around the lower pressing plate. The punching device includes a spindle, a punching motor, a cylinder, and a pusher. The pusher is fixed on the spindle, and the punching motor is connected to the cylinder. The cylinder pushes the pusher to run, and the pusher smoothly punctures and cuts the middle layer of the sponge.
2. The negative pressure drainage sponge punching machine as described in claim 1, characterized in that, The intelligent control system includes an industrial control computer, a PLC controller, and various sensors. The industrial control computer is communicatively connected to the PLC controller, and the PLC controller is connected to various sensors to receive signals transmitted by the sensors.
3. The negative pressure drainage sponge punching machine as described in claim 1, characterized in that, The sponge placement area of the lower pressure plate is suitable for placing sponges of various sizes.
4. The negative pressure drainage sponge punching machine as described in claim 3, characterized in that, The pressure plate positioning device includes positioning posts and positioning holes. The positioning posts are arranged around the lower pressure plate, and the positioning holes are arranged on the upper pressure plate and cooperate with the positioning posts.
5. The negative pressure drainage sponge punching machine as described in claim 1, characterized in that, The drilling device also includes a slide groove, and the pusher is also provided with a pin, which moves along the slide groove.
6. The negative pressure drainage sponge punching machine as described in claim 5, characterized in that, The positioning device includes a pusher limiting screw, which is located at the end of the pusher bar and is used to limit the length of the pusher extension.
7. The negative pressure drainage sponge punching machine as described in claim 1, characterized in that, The various sensors include a rising position sensor and a falling position sensor for the clamping drive device. The rising position sensor is located on the upper part of the clamping drive device, and the falling position sensor is located at the lower end of the lower pressure plate.
8. The negative pressure drainage sponge punching machine as described in claim 1, characterized in that, The lower pressure plate is provided with anti-slip texture.