A device for facilitating replacement of an ostomy pouch base plate

CN224711228UActive Publication Date: 2026-09-04THE AFFILIATED HOSPITAL OF HANGZHOU NORMAL UNIV
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Patent Information

Application Number
CN202520955239.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-15
Publication Date
2026-09-04
Estimated Expiration
2035-05-15

AI Technical Summary

Technical Problem

现有产品在使用时,需根据造口直径人工裁切底盘孔径以适配,但手工裁切易导致边缘不整齐,不仅影响底盘与造口周围皮肤的密封性,增加排泄物渗漏风险,还可能因毛边摩擦造成皮肤损伤

Benefits of technology

[0018]1、两件式造口袋的底盘在使用时,需要根据患者的造口大小对其进行裁切,将本实用新型中的连接杆和适配造口尺寸的裁切头进行连接,将造口袋底盘中心从连接杆和裁切头的第一圆柱部上方穿入,使得造口袋底盘放置在圆盘部上,然后将裁切机构从连接杆的上方套入,裁切机构动作使环形刀片轴向移动对造口袋底盘进行裁切,裁切完成的造口袋底盘可直接向下移动即可脱离取下。然后将连接杆从裁切机构的支撑通道取出,再将裁切头拆卸下来,将连接杆与适配造口尺寸的安装头进行连接,之后再将裁切好的造口袋底盘套放在连接杆上,之后将弧形部对准患者的造口并罩在其外侧,通过吸气气囊或者负压吸引等设备与连接杆上端连接,将弧形部内的气体经过第二通道和第一通道吸出,使得弧形部对患者的皮肤产生一定的吸附力,使弧形部紧贴造口皮肤,一方面遮盖造口,另一方面也可以防止在安装造口袋底盘过程中有体液渗出。接着将造口袋底盘通过连接杆和安装头的引导贴合在患者的皮肤上,再从患者皮肤上取下安装头,最后将造口袋本体安装在造口袋底盘上即可完成造口袋的精确定位和贴合。由此可以看出,本实用新型能够对造口袋底盘进行整齐裁切,并确保底盘与造口的精准定位黏合,具有定位精准、操作方便的优点;另一方面也提高底盘的使用寿命,节省人力及经济成本。

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Abstract

This utility model discloses a device for easily replacing ostomy bag baseplates, including a connecting rod with a first channel vertically arranged inside; a cutting head, the cutting head including a first cylindrical portion; a disc portion at the lower part of the cutting head; a cutting mechanism, the cutting mechanism having a support channel inside, the connecting rod passing through the support channel; a ring blade at the lower part of the cutting mechanism; and an mounting head, the mounting head including a second cylindrical portion, the upper end of the second cylindrical portion also fitting with the connecting rod; an arc-shaped portion below the second cylindrical portion, the arc-shaped portion being hollow inside; a second channel inside the second cylindrical portion, the second channel communicating with the first channel to form a negative pressure adsorption passage. This utility model can neatly cut the ostomy bag baseplate and ensure precise positioning and adhesion between the baseplate and the ostomy, making the ostomy bag baseplate more comfortable, convenient, and safe to use.
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Description

Technical Field

[0001] This utility model relates to a device that facilitates the replacement of the ostomy bag base plate, belonging to the field of medical device technology. Background Technology

[0002] A two-piece ostomy bag is a medical device used for ostomy care, mainly composed of a base plate and a bag body. These two parts are detachable and connected via snaps, adhesive, or Velcro. It is designed to provide a convenient and comfortable waste collection solution for patients with enterostomies (such as colostomies or ileostomies) or urostomies. Existing products require manual cutting of the base plate's aperture to fit the ostomy diameter. However, manual cutting often results in uneven edges, affecting the seal between the base plate and the surrounding skin, increasing the risk of leakage, and potentially causing skin damage due to rough edges. Furthermore, during the adhesive bonding process of the stoma, fluids (such as intestinal fluid and urine) may continuously drain from the stoma. The person needing to change the stoma or the patient must temporarily cover the stoma with cotton balls or gauze to absorb the drained fluid, a cumbersome procedure that easily leads to contamination. If the drained fluid is not absorbed sufficiently during the bonding process, the adhesive will become wet, resulting in unsuccessful bonding, wasting the stoma or significantly shortening its lifespan. Simultaneously, the act of covering and absorbing with gauze or cotton balls may interfere with the precise positioning during bonding, causing misalignment between the stoma opening and the stoma, thus affecting smooth drainage. Moreover, overly rough edges on the stoma opening may rub against the stoma tissue, causing local tissue damage and bleeding, reducing the safety and comfort of using the stoma. Therefore, a device is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide a device that facilitates the replacement of ostomy bag base plates. This invention enables neat cutting of the ostomy bag base plate and ensures precise positioning and adhesion between the base plate and the stoma, making the use of the ostomy bag base plate more comfortable, convenient, and safe.

[0004] The technical solution of this utility model: a device for facilitating the replacement of the ostomy bag base plate, the device comprising...

[0005] A connecting rod, with a first channel vertically installed inside the connecting rod;

[0006] The cutting head includes a first cylindrical portion for inserting the ostomy bag base plate; the upper end of the first cylindrical portion is fitted with a connecting rod; the lower part of the cutting head is provided with a disc portion for supporting and positioning the ostomy bag base plate.

[0007] The cutting mechanism has a support channel inside, and the connecting rod passes through the support channel; the lower part of the cutting mechanism is also provided with an annular blade that can move along the axial direction of the connecting rod, for concentric cutting of the ostomy bag bottom plate on the disc part.

[0008] The mounting head includes a second cylindrical portion, the upper end of which is also fitted with the connecting rod; an arc-shaped portion is provided below the second cylindrical portion, and the interior of the arc-shaped portion is hollow; a second channel is provided inside the second cylindrical portion, and the inner cavity of the arc-shaped portion is connected to the first channel inside the connecting rod through the second channel inside the second cylindrical portion to form a negative pressure adsorption path.

[0009] The aforementioned device for facilitating the replacement of the ostomy bag base plate includes a cutting mechanism comprising a cutting body and a connecting knob, the connecting knob being threadedly connected to the upper end of a connecting rod; handles are symmetrically arranged on the left and right sides of the cutting body; a cutting cylinder is slidably connected inside the cutting body, and the interior of the cutting cylinder is slidably connected to the connecting rod; slid grooves are symmetrically arranged on the left and right sides of the cutting body; a guide block is fixedly connected to the upper end of the cutting cylinder, and both sides of the guide block extend from the slid groove and are slidably connected to the slid groove; a connecting block is rotatably connected to the inner side of the handle, and the other end of the connecting block is rotatably connected to the guide block; an annular blade is disposed on the inner side of the lower end of the cutting cylinder; and a support channel is disposed in the middle of the cutting cylinder and the guide block.

[0010] The aforementioned device for facilitating the replacement of the ostomy bag base plate has a circular groove at the upper end of the cutting body; and a third cylindrical part at the lower end of the connecting knob, which corresponds to the circular groove.

[0011] The aforementioned device for facilitating the replacement of the ostomy bag base plate includes a first inner ring on the inner side of the cutting body; a spring is wrapped around the outer side of the cutting cylinder, with the two ends of the spring connected to the first inner ring and the guide block, respectively.

[0012] The aforementioned device for facilitating the replacement of the ostomy bag base plate includes a second inner ring at the lower end of the cutting body and multiple guide grooves at the upper end of the second inner ring; and multiple guide strips at the lower end of the cutting tube, which cooperate with the guide grooves.

[0013] The aforementioned device for facilitating the replacement of the ostomy bag base plate has absorbent cotton on the upper inner side of the arc-shaped part, and a filter screen below the absorbent cotton.

[0014] The aforementioned device for facilitating the replacement of the ostomy bag base plate has an arc-shaped portion made of medical-grade silicone material; the upper surface of the arc-shaped portion is provided with a release protrusion.

[0015] The aforementioned device for facilitating the replacement of the ostomy bag base plate includes multiple first anti-slip strips on the upper side of the cutting head and multiple second anti-slip strips on the upper side of the mounting head.

[0016] The aforementioned device for facilitating the replacement of the ostomy bag base plate, wherein the connecting rod, the first cylindrical part, and the second cylindrical part are all made of stainless steel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When using the base plate of the two-piece ostomy bag, it needs to be cut according to the size of the patient's stoma. Connect the connecting rod and the cutting head adapted to the stoma size in this utility model. Insert the center of the ostomy bag base plate from above the first cylindrical part of the connecting rod and the cutting head, so that the ostomy bag base plate is placed on the disc part. Then, the cutting mechanism is inserted from above the connecting rod. The action of the cutting mechanism causes the annular blade to move axially to cut the ostomy bag base plate. The cut ostomy bag base plate can be directly moved downward to detach and remove. Then, remove the connecting rod from the support channel of the cutting mechanism, detach the cutting head, connect the connecting rod to the installation head that matches the stoma size, and then place the cut stoma bag base plate onto the connecting rod. Next, align the curved part with the patient's stoma and cover its outside. Using a suction bag or negative pressure suction device connected to the upper end of the connecting rod, the gas inside the curved part is suctioned out through the second and first channels, creating an adhesive force between the curved part and the patient's skin, ensuring a tight fit against the stoma skin. This covers the stoma and prevents fluid leakage during the installation of the stoma bag base plate. Then, guided by the connecting rod and installation head, attach the stoma bag base plate to the patient's skin. Remove the installation head from the patient's skin, and finally, install the stoma bag body onto the stoma bag base plate to complete the precise positioning and fitting of the stoma bag. It can be seen that this utility model can neatly cut the ostomy bag base plate and ensure the precise positioning and bonding of the base plate to the ostomy, which has the advantages of accurate positioning and convenient operation; on the other hand, it also improves the service life of the base plate and saves manpower and economic costs.

[0019] 2. When the cutting mechanism is used to cut the ostomy bag base plate in this utility model, the upper end of the connecting rod that is connected to the cutting head is first inserted into the lower end of the cutting cylinder and the upper end of the connecting rod is inserted into the circular groove. Then, the connecting knob is connected to the upper end of the connecting rod and the third cylindrical part is placed into the circular groove to limit the cutting direction of the connecting rod and the cutting head. Then, the ends of the handles on both sides are brought together inward so that the hand drives the connecting block to rotate. The connecting block causes the guide block to move downward along the slide groove. The guide block drives the cutting cylinder connected to it to move downward, thereby realizing that the annular blade at the lower end of the cutting cylinder cuts the ostomy bag base plate placed on the disc. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural diagram of the connecting rod;

[0022] Figure 3 This is a schematic diagram of the cutting head.

[0023] Figure 4 This is a cross-sectional view of the mounting head;

[0024] Figure 5 This is a schematic diagram of the cutting mechanism;

[0025] Figure 6 This is a cross-sectional view of the cutting mechanism;

[0026] Figure 7 yes Figure 6 A partially enlarged schematic diagram.

[0027] The labels in the attached diagram are as follows: 1-connecting rod, 2-cutting head, 3-mounting head, 4-cutting mechanism, 11-first channel, 21-first cylindrical part, 22-disc part, 23-first anti-slip strip, 31-second cylindrical part, 32-arc part, 33-second channel, 34-absorbent cotton, 35-filter screen, 36-release protrusion, 37-second anti-slip strip, 40-cutting body, 41-connecting knob, 42-handle, 43-cutting cylinder, 44-slide groove, 45-guide block, 46-connecting block, 47-ring blade, 48-circular groove, 49-third cylindrical part, 50-first inner ring, 51-spring, 52-second inner ring, 53-guide groove, 54-guide strip, 55-support channel. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0029] Example: A device for facilitating the replacement of ostomy bag base plates, configured as follows Figure 1-7 As shown, the device includes:

[0030] Connecting rod 1, such as Figure 2 As shown, the connecting rod 1 is made of stainless steel. A first channel 11 is vertically arranged inside the connecting rod 1. The first channel 11 is used for gas flow and provides a channel for the gas in the arc-shaped part 32 to be sucked out by the suction airbag or other equipment. The connecting rod 1 can be selectively connected to the cutting head 2 and the mounting head 3 to achieve interchangeability. The connecting rod 1 is connected to the cutting head 2 and the mounting head 3 by threads.

[0031] Cutting head 2, such as Figure 3 As shown, the cutting head 2 includes a first cylindrical portion 21 made of stainless steel, which is used to insert the ostomy bag base plate. The upper end of the first cylindrical portion 21 is fitted with the connecting rod 1. The center hole of the ostomy bag base plate is fitted onto the first cylindrical portion 21 and lies flat on the upper surface of the disc portion 22. The disc portion 22 provides a stable support plane for the ostomy bag base plate, facilitating subsequent cutting operations.

[0032] Cutting mechanism 4, such as Figure 5 and Figure 6As shown, the cutting mechanism 4 has a support channel 55 inside, and the connecting rod 1 passes through the support channel 55; the lower part of the cutting mechanism 4 is also provided with an annular blade 47 that can move along the axial direction of the connecting rod 1, which is used to perform concentric circle cutting on the ostomy bag base plate on the disc part 22; the main function of the cutting mechanism 4 is to accurately cut the ostomy bag base plate according to the size of the patient's stoma, so as to ensure that the cut base plate is perfectly adapted to the stoma;

[0033] Install head 3, such as Figure 4 As shown, the mounting head 3 includes a second cylindrical portion 31, the upper end of which is also fitted with the connecting rod. Below the second cylindrical portion 31 is an arc-shaped portion 32, which is hollow inside. The main function of the arc-shaped portion 32 is to fix the ostomy bag base plate to the patient's skin through adsorption, preventing fluid leakage and providing a good environment for the base plate installation. A second channel 33 is provided inside the second cylindrical portion 31, which also serves as a gas flow channel. The inner cavity of the arc-shaped portion 32 is connected to the first channel 11 inside the connecting rod 1 through the second channel 33 in the second cylindrical portion 31, forming a negative pressure adsorption pathway. The diameter of the disc portion 22 is equal to or slightly larger than the diameter of the bottom surface of the arc-shaped portion 32, allowing the cut ostomy bag base plate to be smoothly placed on the patient's skin surface through the arc-shaped portion 32. When using the two-piece ostomy bag base plate, it needs to be cut according to the size of the patient's stoma. Connect the connecting rod 1 and the cutting head 2 that is adapted to the stoma size. Insert the center of the stoma bag base plate from above the first cylindrical part 21 of the connecting rod 1 and the cutting head 2, so that the stoma bag base plate is placed on the disc part 22. Then, the cutting mechanism 4 is inserted from above the connecting rod 1. The cutting mechanism 4 moves the annular blade 47 axially to cut the stoma bag base plate. The cut stoma bag base plate can be directly moved downward to detach and remove it. Then, the connecting rod 1 is removed from the support channel 55 of the cutting mechanism 4, and the cutting head 2 is disassembled. The connecting rod 1 is connected to the installation head 3, which is adapted to the stoma size. The cut stoma bag base plate is then placed on the connecting rod 1. The arc-shaped part 32 is then aligned with the patient's stoma and covered on its outside. The air in the arc-shaped part 32 is drawn out through the second channel 33 and the first channel 11 by connecting the upper end of the connecting rod 1 with a suction bag or negative pressure suction device. This allows the arc-shaped part 32 to have a certain adhesion to the patient's skin, making it fit tightly against the stoma skin. This covers the stoma and prevents fluid leakage during the installation of the stoma bag base plate. Next, the stoma bag base plate is fitted onto the patient's skin with the guidance of the connecting rod 1 and the installation head 3. The installation head 3 is then removed from the patient's skin. Finally, the stoma bag body is installed on the stoma bag base plate to complete the precise positioning and fitting of the stoma bag.

[0034] Preferably, such as Figure 5-7As shown, the cutting mechanism 4 includes a cutting body 40 and a connecting knob 41, which is threadedly connected to the upper end of the connecting rod 1. Handles 42 are symmetrically arranged on both sides of the cutting body 40. The handles 42 are wrapped in non-slip rubber material for easy gripping and to provide better handling and stability. A cutting cylinder 43 is slidably connected inside the cutting body 40, and the inside of the cutting cylinder 43 is slidably connected to the connecting rod 1. Sliding grooves 44 are symmetrically arranged on both sides of the cutting body 40. A guide block 45 is fixedly connected to the upper end, and both sides of the guide block 45 extend through the slide groove 44 and are slidably connected to the slide groove 44. A connecting block 46 is rotatably connected to the inner side of the handle 42, and the other end of the connecting block 46 is rotatably connected to the waist-shaped hole on the guide block 45 by bolts. The waist-shaped hole allows for a certain amount of movement when the handle 42 moves the guide block 45 through the connecting block 46, avoiding interference. The annular blade 47 is located on the inner side of the lower end of the cutting cylinder 43. The support channel 55 is located in the middle of the cutting cylinder 43 and the guide block 45. The upper end of the cutting body 40 is provided with a circular groove 48. The lower end of the connecting knob 41 is provided with a third cylindrical part 49, which corresponds to the circular groove 48. After the connecting knob 41 is connected to the connecting rod 1, the third cylindrical part 49 is inserted into the circular groove 48, which limits the downward movement of the connecting rod 1 and the cutting head 2, preventing the ostomy bag base from moving downward and thus failing to cut effectively when the annular blade 47 cuts the ostomy bag base. When using the cutting mechanism 4 to cut the ostomy bag base, first insert the upper end of the connecting rod 1, which is already connected to the cutting head 2, into the lower end of the cutting cylinder 43 and insert the upper end of the connecting rod 1 into the circular groove 48. Then connect the connecting knob 41 to the upper end of the connecting rod 1 and place the third cylindrical part 49 into the circular groove 48 to limit the cutting direction of the connecting rod 1 and the cutting head 2. Then, bring the ends of the handles 42 on both sides inward so that the hand drives the connecting block 46 to rotate. The connecting block 46 causes the guide block 45 to move downward along the slide groove 44. The guide block 45 drives the cutting cylinder 43 connected to it to move downward, thereby realizing that the annular blade 47 at the lower end of the cutting cylinder 43 cuts the ostomy bag base placed on the disc part 22.

[0035] Preferably, such as Figure 6 As shown, the inner side of the cutting body 40 is provided with a first inner ring 50; the outer side of the cutting cylinder 43 is surrounded by a spring 51, and the two ends of the spring 51 are respectively connected to the first inner ring 50 and the guide block 45. After the cutting is completed, the handle 42, the guide block 45, the cutting cylinder 43 and the connecting block 46 are reset by the elastic force of the spring 51.

[0036] Preferably, such as Figure 6As shown, the lower end of the cutting body 40 is provided with a second inner ring 52, and the upper end of the second inner ring 52 is provided with multiple guide grooves 53; the lower end of the cutting cylinder 43 is provided with multiple guide strips 54, and the guide strips 54 cooperate with the guide grooves 53. The guide strips 54 and guide grooves 53 further ensure that the annular blade 47 can cut the ostomy bag base plate in the vertical direction, thereby improving the cutting accuracy.

[0037] Preferably, such as Figure 2 As shown, an absorbent cotton 34 is provided on the upper inner side of the arc-shaped portion 32. The absorbent cotton 34 is made of medical-grade hydrophilic fiber material, which can quickly and effectively absorb bodily fluids. Below the absorbent cotton 34 is a filter screen 35, which is made of medical-grade non-woven fabric material. This filter screen can filter impurities and the internal tube in the stoma, preventing impurities from entering the arc-shaped portion 32 and affecting the absorption effect. After placing the absorbent cotton 34 inside the installation head 3, the filter screen 35 is attached to the inside of the arc-shaped portion 32 by adhesive. After use, both are removed and discarded. The absorbent cotton 34 absorbs the bodily fluids seeping from the stoma during the negative pressure process of the arc-shaped portion 32, while the filter screen 35 filters impurities and the internal tube in the stoma.

[0038] Preferably, such as Figure 4 As shown, the arc-shaped part 32 is made of medical-grade silicone. Medical-grade silicone has good biocompatibility, is soft in texture, and can closely conform to the patient's skin. It also has a certain degree of elasticity and can adapt to the body curves of different patients. The upper surface of the arc-shaped part 32 is provided with release protrusions 36. After the ostomy bag base plate is attached, the arc-shaped part 32 is lifted outward by the release protrusions 36, so that air can quickly enter the interior of the arc-shaped part 32, thereby realizing the rapid separation of the installation head 3 from the patient's skin.

[0039] Preferably, such as Figure 3 and Figure 4 As shown, the upper side of the cutting head 2 is provided with multiple first anti-slip strips 23; the upper side of the mounting head 3 is provided with multiple second anti-slip strips 37. The first anti-slip strips 23 and the second anti-slip strips 37 are used to increase the friction when holding the cutting head 2 and the mounting head 3, and to prevent them from slipping and falling, causing damage.

[0040] Working principle:

[0041] Cutting steps: First, select a cutting head 2 that matches the size of the patient's stoma and connect it to the lower end of the connecting rod 1 via threads. Then, place the center of the stoma bag base plate through the upper end of the connecting rod 1 onto the upper surface of the disc portion 22 of the cutting head 2, using the flat surface of the disc portion 22 to stably support the base plate. Next, insert the cutting mechanism 4 from above the connecting rod 1, so that the upper end of the connecting rod 1 passes into the circular groove 48 of the cutting body 40. Tighten the top connecting knob 41 to create a downward limit on the connecting rod 1 and the cutting head 2 to prevent stoma from being cut. The bag base plate is moved, and the operator uses their hands to gather the two handles 42 inward. The connecting block 46 drives the guide block 45 to slide downward along the slide groove 44 of the cutting body 40, driving the cutting cylinder 43 to move vertically downward. The high hardness and sharp edge of the ring blade 47 are used to make precise cuts along the edge of the base plate. At the same time, the guide strip 54 and guide groove 53 at the lower end of the cutting body 40 restrict the movement trajectory of the cutting cylinder 43 to ensure that the cut is vertical and neat. After the cut is completed, the cut ostomy bag base plate is moved outward to separate it from the disc part 22.

[0042] Installation steps: After disassembling the cutting head 2, connect the lower end of the connecting rod 1 to the installation head 3 that is adapted to the stoma size. Pass the center of the cut stoma bag base through the connecting rod 1 and place it on the second cylindrical part 31 of the installation head 3. Then, align the arc-shaped part 32 with the patient's stoma and completely cover it. Use an air suction bag or negative pressure drainage device to draw air out of the arc-shaped part 32 from the upper end of the connecting rod 1. It should be noted that the negative pressure should be sufficient to adhere to the skin, and avoid excessive negative pressure that may damage the stoma. Negative pressure causes gas to be discharged through the second channel 33 and the first channel 11. The elastic deformation of medical silicone creates negative pressure inside the arc-shaped part 32 and tightly adheres to the skin to generate stable adsorption force. At the same time, the absorbent cotton 34 on the upper inner side of the arc-shaped part 32 absorbs the seeping body fluid, and the filter screen 35 below filters impurities or residues from the internal tube to keep the area clean. Then, following the guide of the connecting rod 1 and the mounting head 3, the adhesive surface of the ostomy bag base is precisely adhered to the skin around the stoma, ensuring no air bubbles or wrinkles. Finally, the release protrusion 36 on the upper surface of the arc-shaped part 32 is lifted, causing one side of the arc-shaped part 32 to tilt up. Air quickly enters the interior, breaking the negative pressure state and achieving a non-damaging separation of the mounting head 3 from the skin. After removing the mounting head 3, the ostomy bag body is connected to the base to complete the installation.

Claims

1. A device for easily replacing the ostomy bag baseplate, characterized in that, The device includes: A connecting rod (1) is provided with a first channel (11) vertically inside the connecting rod (1); The cutting head (2) includes a first cylindrical part (21) for inserting the ostomy bag base plate; the upper end of the first cylindrical part (21) is fitted with the connecting rod (1); the lower part of the cutting head (2) is provided with a disc part (22) for supporting and positioning the ostomy bag base plate; The cutting mechanism (4) has a support channel (55) inside, and the connecting rod (1) passes through the support channel (55); the lower part of the cutting mechanism (4) is also provided with an annular blade (47) that can move along the axial direction of the connecting rod (1) for concentric cutting of the ostomy bag bottom plate on the disc part (22). The mounting head (3) includes a second cylindrical part (31), the upper end of which is also fitted with the connecting rod; an arc-shaped part (32) is provided below the second cylindrical part (31), and the arc-shaped part (32) is hollow inside; a second channel (33) is provided inside the second cylindrical part (31), and the inner cavity of the arc-shaped part (32) is connected to the first channel (11) inside the connecting rod (1) through the second channel (33) inside the second cylindrical part (31) to form a negative pressure adsorption passage.

2. The device for facilitating the replacement of the ostomy bag base plate according to claim 1, characterized in that: The cutting mechanism (4) includes a cutting body (40) and a connecting knob (41), the connecting knob (41) being threadedly connected to the upper end of the connecting rod (1); handles (42) are symmetrically arranged on the left and right sides of the cutting body (40); a cutting cylinder (43) is slidably connected inside the cutting body (40), and the inside of the cutting cylinder (43) is slidably connected to the connecting rod (1); grooves (44) are symmetrically arranged on the left and right sides of the cutting body (40); the cutting cylinder... (43) has a guide block (45) fixedly connected to its upper end. The two sides of the guide block (45) pass through the slide groove (44) and are slidably connected to the slide groove (44). The handle (42) has a connecting block (46) rotatably connected to its inner side. The other end of the connecting block (46) is rotatably connected to the guide block (45). The annular blade (47) is set inside the lower end of the cutting cylinder (43). The support channel (55) is set in the middle of the cutting cylinder (43) and the guide block (45).

3. The device for facilitating the replacement of the ostomy bag base plate according to claim 2, characterized in that: The upper end of the cutting body (40) is provided with a circular groove (48); the lower end of the connecting knob (41) is provided with a third cylindrical part (49), which corresponds to the circular groove (48).

4. The device for facilitating the replacement of the ostomy bag base plate according to claim 2, characterized in that: The inner side of the cutting body (40) is provided with a first inner ring (50); the outer side of the cutting cylinder (43) is surrounded by a spring (51), and the two ends of the spring (51) are respectively connected to the first inner ring (50) and the guide block (45).

5. The device for facilitating the replacement of the ostomy bag base plate according to claim 2, characterized in that: The lower end of the cutting body (40) is provided with a second inner ring (52), and the upper end of the second inner ring (52) is provided with multiple guide grooves (53); the lower end of the cutting cylinder (43) is provided with multiple guide strips (54), and the guide strips (54) cooperate with the guide grooves (53).

6. The device for facilitating the replacement of the ostomy bag base plate according to claim 1, characterized in that: The upper inner side of the arc-shaped part (32) is provided with absorbent cotton (34), and a filter screen (35) is provided below the absorbent cotton (34).

7. The device for facilitating the replacement of the ostomy bag base plate according to claim 1, characterized in that: The arc-shaped part (32) is made of medical-grade silicone; the upper surface of the arc-shaped part (32) is provided with a release protrusion (36).

8. The device for facilitating the replacement of the ostomy bag base plate according to claim 1, characterized in that: The upper side of the cutting head (2) is provided with a plurality of first anti-slip strips (23); the upper side of the mounting head (3) is provided with a plurality of second anti-slip strips (37).

9. The device for facilitating the replacement of the ostomy bag base plate according to claim 1, characterized in that: The connecting rod (1), the first cylindrical part (21) and the second cylindrical part (31) are all made of stainless steel.