A varicose vein ligator

Abstract

This invention provides a varicose vein ligation device, belonging to the field of medical device technology. It includes a handle, a negative pressure tube fixedly connected to one side of the handle, an adsorption tube fixedly connected to the top of the handle, a transparent cylinder fixedly connected to the end of the adsorption tube, and a telescopic cylinder slidably connected to the outer wall of the adsorption tube. A delivery mechanism assists medical personnel in delivering a rubber ring to the root of the patient's hemorrhoid. The delivery mechanism is connected to both the transparent cylinder and the telescopic cylinder. By incorporating this delivery mechanism, if the ligation is incorrectly positioned during the ligation process, the rubber ring can be automatically removed directly by the delivery mechanism without the need for cutting or removing it with other medical instruments. The removal of the rubber ring is simple and convenient, causing no harm to the patient, improving the efficiency of the treatment, reducing patient discomfort, and simplifying the ligation procedure.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a ligator for varicose veins. Background Technology

[0002] Internal hemorrhoids are a very common anorectal disease. Its main clinical symptoms include bleeding, prolapse, swelling and pain, which seriously affect the quality of life of patients. Among the many treatment methods, rubber band ligation for internal hemorrhoids is widely recommended as the first-line non-surgical treatment for grade II and III internal hemorrhoids due to its advantages such as simple operation, minimal trauma, fast recovery and definite curative effect.

[0003] During treatment, a special ligator for internal hemorrhoids (hemorrhoid band ligator) is generally used. The tip of the ligator is aligned with the target hemorrhoid, and then negative pressure suction is turned on to draw the hemorrhoidal mucosa into the transparent cap of the ligator. Then, the doctor pulls the trigger of the ligator to release a highly elastic rubber ring, which firmly binds the root of the internal hemorrhoid. The blood supply to the bound hemorrhoid is immediately cut off, and it will gradually become ischemic, shrink, and necrotize within 1-2 weeks, and finally fall off naturally with defecation.

[0004] The above-mentioned procedures heavily rely on the doctor's experience and clinical judgment. The suction amount of the ligator on the internal hemorrhoids and the timing and location of the rubber band ligation are crucial. Therefore, during ligation treatment, operational errors can easily lead to unsatisfactory ligation positions, such as ligation points that are too low (close to the dentate line, causing severe pain), too high (resulting in poor treatment), or ligation of normal mucosa instead of the hemorrhoid. In such cases, the doctor usually uses instruments such as foreign body forceps and biopsy forceps under gastroscopy to carefully hook the rubber band, cut it, and remove it. This process requires extremely high skill from the doctor and may also carry the risk of accidentally damaging the patient's normal tissue, affecting treatment efficiency and increasing patient suffering. Therefore, this invention provides a ligator for varicose veins to meet this need. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a ligator for varicose veins. By setting up an insertion mechanism, if the ligation position is incorrect during the ligation operation, the ligator provided in this application can automatically remove the rubber ring directly by the insertion mechanism without the need for other medical instruments to cut and remove it. The removal of the rubber ring is simple and convenient, and will not cause any damage to the patient. This improves the efficiency of the treatment operation, reduces the patient's pain, and reduces the difficulty of the ligation operation. Through the above settings, the problem that the current ligator is prone to improper ligation position due to medical staff operation errors, thereby reducing treatment efficiency and increasing patient pain can be solved.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A varicose vein ligation device includes a handle, a negative pressure tube fixedly connected to one side of the handle, a limiting block fixedly connected to the other side of the handle, an adsorption tube fixedly connected to the top of the handle, a transparent tube fixedly connected to the end of the adsorption tube, a lever rotatably connected to the limiting block, a reset spring fixedly connected to the bottom outer wall of the lever, the end of the reset spring away from the lever abutting against the outer wall of the handle, a telescopic tube slidably connected to the outer wall of the adsorption tube, a connecting rod fixedly connected to the end of the telescopic tube near the lever, the end of the connecting rod rotatably connected to the top of the lever, and a delivery mechanism for assisting medical personnel in delivering a rubber ring to the root of the patient's hemorrhoids. The delivery mechanism is connected to the transparent tube and the telescopic tube respectively.

[0007] Optionally, the dispensing mechanism includes a pusher tube fixedly connected to the end of the telescopic tube away from the connecting rod and a plurality of insert plates. A first bending piece is fixedly connected to one side of the insert plate, and a first outward flap is fixedly connected to one side of the first bending piece. The dispensing mechanism also includes a sliding sleeve slidably connected to the outer wall of the transparent tube. A plurality of second bending pieces are fixedly connected to one side of the sliding sleeve, and a second outward flap is fixedly connected to one side of the second bending piece.

[0008] Optionally, a baffle is fixedly connected to the end of the pusher cylinder away from the telescopic cylinder, and the baffle abuts against the outside of the sliding sleeve.

[0009] Optionally, there is a gap between the inner wall of the pusher cylinder and the outer wall of the insert plate, and a spring is installed in the gap. One end of the spring is fixedly connected to the outer wall of the sliding sleeve, and the other end of the spring is fixedly connected to the end of the telescopic cylinder.

[0010] Optionally, a plurality of sliders are fixedly connected to the inner circumference of the sliding sleeve, and a plurality of grooves corresponding to the positions of the sliders are provided on the outer wall of the transparent cylinder. The sliding sleeve and the transparent cylinder are connected together by the sliders and the grooves for limiting and sliding.

[0011] Optionally, the sliding sleeve has a through slot corresponding to the position of the insert plate, and the insert plate is inserted into the slot.

[0012] Optionally, both the first and second bent pieces are outwardly convex arc-shaped contours, and a plurality of the first and second bent pieces are arranged alternately and spaced apart, forming a complete cylindrical structure.

[0013] Optionally, both the first and second outward-turning pieces are outward-turning "C"-shaped outlines, and the size of the second outward-turning piece is larger than that of the first outward-turning piece. A second rubber ring and a first rubber ring are respectively installed inside the second and first outward-turning pieces.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In the above-described scheme, by setting up a delivery mechanism, the ligator provided in this application can perform two steps during the ligation operation: preliminary ligation and final ligation of the target hemorrhoid. The preliminary ligation mainly uses the second eversion flap to pre-position the root of the hemorrhoid, and this operation is reversible. If the ligation position is incorrect, there is no need to use other medical instruments to cut and remove the ligated rubber ring; instead, the delivery mechanism can automatically remove the rubber ring directly. Removing the rubber ring is simple and convenient, causing no damage to the patient, improving the efficiency of the treatment operation, reducing patient pain, and lowering the difficulty of the ligation operation. The final ligation operation involves placing the second rubber ring at the root of the hemorrhoid. This design ensures that the second rubber ring is fully attached to the root of the hemorrhoid. The final ligation position is guaranteed to be accurate, reducing the difficulty of the ligation operation, improving the convenience of the operation, and avoiding the problem of unsatisfactory ligation position of the second rubber ring due to medical staff's misjudgment or operation errors. This reduces patient pain and improves treatment efficiency. In addition, the setting of the delivery mechanism makes it easier for medical staff to place the new second rubber ring on the second eversion flap. In actual operation, medical staff can press the telescopic cylinder to make the second eversion flap detach from the transparent cylinder. After the second eversion flap is detached from the transparent cylinder, it can be gathered together under the traction of external force. After the second eversion flap is gathered together, the outer circumference size is smaller. At this time, it is easier to place the second rubber ring inside the second eversion flap, which improves the efficiency of medical staff in placing the second rubber ring. Attached Figure Description

[0015] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a ligator for varicose veins; Figure 2 A magnified three-dimensional structural diagram of the handle, negative pressure tube, suction tube, and transparent cylinder; Figure 3 An enlarged 3D structural diagram of the lever, reset spring, telescopic cylinder, and connecting rod; Figure 4 An enlarged three-dimensional structural diagram of the telescopic cylinder, the pushing cylinder, the first bending piece, and the first outward-folding piece; Figure 5 A magnified three-dimensional structural diagram of the sliding sleeve, the second bending piece, and the second outward-facing piece; Figure 6 An enlarged 3D structural diagram of the delivery mechanism; Figure 7 A cross-sectional three-dimensional structural diagram of the delivery unit; Figure 8 for Figure 7 Enlarged 3D structural diagram at point A.

[0017] Figure label: 1. Handle; 2. Negative pressure tube; 3. Limiting block; 4. Adsorption tube; 5. Transparent tube; 6. Slide groove; 7. Lever; 8. Reset spring; 9. Telescopic tube; 10. Connecting rod; 11. Pushing tube; 12. Baffle; 13. Insert plate; 14. First bending piece; 15. First outward flap; 16. First rubber ring; 17. Spring; 18. Sliding sleeve; 19. Sliding block; 20. Slot; 21. Second bending piece; 22. Second outward flap; 23. Second rubber ring.

[0018] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0019] The ligation device for varicose veins provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0022] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0023] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0024] like Figures 1 to 3 As shown, an embodiment of the present invention provides a varicose vein ligation device, including a handle 1, a negative pressure tube 2 fixedly connected to one side of the handle 1, a limiting block 3 fixedly connected to the other side of the handle 1, an adsorption tube 4 fixedly connected to the top of the handle 1, a transparent tube 5 fixedly connected to the end of the adsorption tube 4, a lever 7 rotatably connected to the limiting block 3, a reset spring 8 fixedly connected to the bottom outer wall of the lever 7, the end of the reset spring 8 away from the lever 7 abutting against the outer wall of the handle 1, a telescopic tube 9 slidably connected to the outer wall of the adsorption tube 4, a connecting rod 10 fixedly connected to the end of the telescopic tube 9 near the lever 7, and the end of the connecting rod 10 rotatably connected to the top of the lever 7.

[0025] When using the ligation device provided in this application, medical personnel hold the handle 1 and place the rubber ring on the outer wall of the transparent cylinder 5, connecting the bottom end of the negative pressure tube 2 to the pipeline of the negative pressure device. Then, the end of the transparent cylinder 5 is aligned with the hemorrhoid to be treated on the patient. Finally, the negative pressure device is activated, allowing negative pressure to enter the suction tube 4 along the negative pressure tube 2. The negative pressure in the suction tube 4 draws the patient's hemorrhoid into the transparent cylinder 5. After the hemorrhoid is completely drawn in, the medical personnel press the bottom of the lever 7 with their fingers. Under the combined action of the lever 7 and the limiting block 3, the telescopic cylinder 9 slides towards the transparent cylinder 5. During the sliding process, the telescopic cylinder 9 squeezes the rubber ring on the outer wall of the transparent cylinder 5. Under the continuous squeezing action of the telescopic cylinder 9, the rubber ring detaches from the transparent cylinder 5 and is ligated around the base of the patient's hemorrhoid. After the rubber ring is ligated... The medical staff can complete the treatment by removing the ligation device. When the medical staff stops pressing the lever 7, the lever 7 will automatically return to its initial position under the elastic force of the reset spring 8. It is worth mentioning that in this technical solution, the working principle of the negative pressure tube 2 connected to the negative pressure device, and the working principle of how the negative pressure enters the adsorption tube 4 along the negative pressure tube 2 and adsorbs the patient's hemorrhoids with the help of the transparent cylinder 5, are all disclosed as prior art. In addition, the working principle of the medical staff pressing the lever 7 to make the telescopic cylinder 9 slide toward the transparent cylinder 5, and the working principle of resetting the lever 7 with the elastic force of the reset spring 8 are also disclosed as prior art. Since the above technologies are mature technologies in the field of ligation device technology, they will not be described in detail in this application.

[0026] As one implementation method in this embodiment, such as Figures 1 to 8 As shown, the dispensing mechanism assists medical personnel in dispensing the rubber ring to the base of the patient's hemorrhoids. The dispensing mechanism is connected to the transparent cylinder 5 and the telescopic cylinder 9. The dispensing mechanism includes a pusher cylinder 11 fixedly connected to the end of the telescopic cylinder 9 away from the connecting rod 10 and several insert plates 13. The dispensing mechanism also includes a sliding sleeve 18 slidably connected to the outer wall of the transparent cylinder 5. Several sliders 19 are fixedly connected to the inner circumference of the sliding sleeve 18. Several grooves 6 corresponding to the positions of the sliders 19 are formed on the outer wall of the transparent cylinder 5. The sliding sleeve 18 and the transparent cylinder 5... The sliding sleeve 18 is connected to the sliding sleeve 18 by a slider 19 and a sliding groove 6. A slot 20 corresponding to the position of the insert plate 13 is opened through the sliding sleeve 18. The insert plate 13 is inserted into the slot 20. A baffle 12 is fixedly connected to the end of the push cylinder 11 away from the telescopic cylinder 9. The baffle 12 abuts against the outside of the sliding sleeve 18. There is a gap between the inner wall of the push cylinder 11 and the outer wall of the insert plate 13. A spring 17 is installed in the gap. One end of the spring 17 is fixedly connected to the outer wall of the sliding sleeve 18, and the other end of the spring 17 is fixedly connected to the end of the telescopic cylinder 9.

[0027] In the above structure, since the insert plate 13 is inserted into the slot 20, the sliding sleeve 18 cannot rotate on the outer wall of the transparent cylinder 5 due to the limiting effect of the insert plate 13. This design ensures that the slider 19 can slide stably in the slide groove 6, and the slider 19 will not disengage or become misaligned in the slide groove 6 during the sliding process. Furthermore, a spring 17 is installed in the gap between the push cylinder 11 and the insert plate 13. The two ends of the spring 17 are fixed to the sliding sleeve 18 and the telescopic cylinder 9, respectively, and the elastic force of the spring 17 is greater than the sum of the frictional forces between the telescopic cylinder 9 and the transparent cylinder 5 and between the sliding sleeve 18 and the transparent cylinder 5. Therefore, when the medical staff presses the bottom of the lever 7 to push the telescopic cylinder 9 to slide towards the transparent cylinder 5, the telescopic cylinder 9 will push the spring 17. At this time, under the elastic force of the spring 17, the telescopic cylinder 9 cannot push the spring 17 to deform and contract, and the spring 17 will... The thrust is continued to be transmitted to the sliding sleeve 18, so the sliding sleeve 18 and the telescopic cylinder 9 will move synchronously toward the end of the transparent cylinder 5. During the movement of the sliding sleeve 18, the slider 19 will slide in the groove 6. When the slider 19 slides to the end of the groove 6, the telescopic cylinder 9 can no longer push the sliding sleeve 18 to slide due to the blocking effect of the groove 6. If the telescopic cylinder 9 is pushed at this time, the spring 17 will deform and fold together. During the deformation of the spring 17, the telescopic cylinder 9 will continue to slide independently toward the transparent cylinder 5. Furthermore, since the baffle 12 is set on the outside of the sliding sleeve 18, when the telescopic cylinder 9 pushes the sliding sleeve 18 to slide synchronously toward the transparent cylinder 5, if the telescopic cylinder 9 is pulled in the opposite direction to slide away from the transparent cylinder 5, the sliding sleeve 18 will be pulled to slide synchronously away from the transparent cylinder 5 under the blocking effect of the baffle 12.

[0028] In this embodiment, as Figures 1 to 8 As shown, a first bent piece 14 is fixedly connected to one side of the insert plate 13, a first outward-turning piece 15 is fixedly connected to one side of the first bent piece 14, a plurality of second bent pieces 21 are fixedly connected to one side of the sliding sleeve 18, and a second outward-turning piece 22 is fixedly connected to one side of the second bent piece 21. The first bent piece 14 and the second bent piece 21 are both outwardly protruding arc-shaped contours. The plurality of first bent pieces 14 and the plurality of second bent pieces 21 are staggered and spaced apart, and the two enclose a complete cylindrical structure. The first outward-turning piece 15 and the second outward-turning piece 22 are both outwardly turned "C"-shaped contours, and the size of the second outward-turning piece 22 is larger than the size of the first outward-turning piece 15. A second rubber ring 23 and a first rubber ring 16 are respectively installed inside the second outward-turning piece 22 and the first outward-turning piece 15.

[0029] As described above, during the process of medical personnel pressing lever 7 to slide the telescopic cylinder 9 towards the transparent cylinder 5, the sliding sleeve 18 will slide synchronously with the telescopic cylinder 9 towards the transparent cylinder 5 under the elastic force of spring 17. During the synchronous sliding of the sliding sleeve 18 and the telescopic cylinder 9, the second bent piece 21 and the second everted piece 22 at the end of the sliding sleeve 18, as well as the first bent piece 14 and the first everted piece 15 at the end of the telescopic cylinder 9, will also slide synchronously with the sliding sleeve 18 and the telescopic cylinder 9. It is worth mentioning that the second bent piece 21 and the second everted piece 22 are initially located at the end of the transparent cylinder 5. When the medical personnel activate the negative pressure device to suck the hemorrhoids into the transparent cylinder 5, the second everted piece 22... At the root of the hemorrhoid, if the telescopic cylinder 9 and the sliding sleeve 18 move synchronously toward the transparent cylinder 5, the second eversion piece 22 will gradually detach from the outer wall of the transparent cylinder 5. Since the second bending piece 21, the second eversion piece 22, the first bending piece 14, and the first eversion piece 15 are all segmented structures, and the second rubber ring 23 and the first rubber ring 16 are respectively located inside the second eversion piece 22 and the first eversion piece 15, when the second eversion piece 22 detaches from the transparent cylinder 5, under the elastic force of the second rubber ring 23, several second eversion pieces 22 will gradually be pulled together, thereby using the gathered second eversion pieces 22 to initially ligate the root of the hemorrhoid.

[0030] Furthermore, since both the second bending piece 21 and the first bending piece 14 are outwardly convex arc-shaped contours, they are more likely to deform in the direction of their bending under the action of external force. With this arrangement, after the second outward flap 22 and the first outward flap 15 are separated from the transparent tube 5, they will be more easily pulled together by the elastic force of the second rubber ring 23 and the first rubber ring 16. Since the first bending pieces 14 and the second bending pieces 21 are arranged in an alternating pattern, they do not interfere with each other when they deform and gather together. This arrangement ensures that no matter which of the second bending pieces 21 or the first bending pieces 14 deforms and gathers together first, the other will not be affected.

[0031] Furthermore, since both the second outward flap 22 and the first outward flap 15 are outwardly flipped "C"-shaped contours, they can respectively partially wrap and limit the second rubber ring 23 and the first rubber ring 16, preventing the second rubber ring 23 and the first rubber ring 16 from slipping off. It is worth mentioning that the size of the second outward flap 22 is larger than the size of the first outward flap 15, and the sizes of the first outward flap 15 and the first rubber ring 16 are compatible. This setting allows the second outward flap 22 to accommodate the second rubber ring 23 of different sizes. At the same time, the first outward flap 15 has better wrapping properties for the first rubber ring 16, ensuring that the first rubber ring 16 will not easily detach from the limit of the first outward flap 15.

[0032] As described above, under the action of spring 17, the movement between telescopic cylinder 9 and sliding sleeve 18 exists in two different states: State 1, that is, before slider 19 slides to the end of slide groove 6, in this state, telescopic cylinder 9 and sliding sleeve 18 slide synchronously towards transparent cylinder 5, and during the sliding process, second outward flap 22 and first outward flap 15 successively detach from transparent cylinder 5, and are pulled together by the elastic force of second rubber ring 23 and first rubber ring 16 respectively. After they are pulled together, they can be initially ligated at the root of hemorrhoids. During the initial ligation process, if the ligation position of second outward flap 22 is deviated due to the operation error of medical personnel, the medical personnel need to pull telescopic cylinder 9 in the opposite direction. During the reverse sliding of telescopic cylinder 9, under the blocking action of baffle 12, it will synchronously pull sliding sleeve 18 to slide in the opposite direction with telescopic cylinder 9. At this time, the originally pulled together The second eversion flap 22 and the first eversion flap 15 will gradually spread outward and slide back towards the transparent cylinder 5, eventually re-attaching to the outer wall of the transparent cylinder 5. After the second eversion flap 22 and the first eversion flap 15 return to their initial positions, medical personnel can readjust the position and direction of the transparent cylinder 5 to absorb the hemorrhoids. After confirming that the position is correct, the telescopic cylinder 9 will be pushed back towards the transparent cylinder 5 to perform initial ligation of the hemorrhoids. With this setting, if the ligation position is incorrect during the ligation process, there is no need to use other medical instruments to cut and remove the ligated rubber ring. Instead, the rubber ring can be automatically removed by the delivery mechanism. The operation of removing the rubber ring is simple and convenient, and will not cause any damage to the patient. This improves the efficiency of the treatment operation, reduces the patient's pain, and reduces the difficulty of the ligation operation.In state two, when slider 19 slides to the end of groove 6, it means that the second eversion flap 22 has completely converged. Medical personnel can use a colonoscope to observe and determine whether the convergence position of the second eversion flap 22 is reasonable. After confirming that it is correct, the medical personnel continue to push the telescopic cylinder 9. At this time, due to the blocking effect of groove 6, slider 19 cannot continue to slide, that is, the sliding sleeve 18 cannot continue to slide with the telescopic cylinder 9. The spring 17 deforms and folds together under the continuous pushing action of the telescopic cylinder 9. At this time, the telescopic cylinder 9 slides alone towards the transparent cylinder 5, and continues to push the first The first outward-facing flap 15 slides towards the second outward-facing flap 22. As the first outward-facing flap 15 continues to slide, it compresses the second rubber ring 23 on the second outward-facing flap 22. Since both the second outward-facing flap 22 and the first outward-facing flap 15 have outward-turning "C"-shaped contours, and their outward-turning directions are consistent, this design causes the "C"-shaped contour of the second outward-facing flap 22 to gradually open and tend towards straightness as the first outward-facing flap 15 compresses the second rubber ring 23. Meanwhile, the "C"-shaped contour of the first outward-facing flap 15 continues to turn inward during the compression process. The first eversion flap 15 continuously wraps around and holds the first rubber ring 16. As the second rubber ring 23 is continuously compressed, it gradually detaches from the second eversion flap 22 and eventually pops out from the end of the second eversion flap 22 to ligate the root of the target hemorrhoid. After the second rubber ring 23 is ligated, the medical staff releases the pressure lever 7, and the telescopic cylinder 9 automatically returns to its initial position. Simultaneously, the first eversion flap 15 and the second eversion flap 22 also return to their initial positions to facilitate subsequent ligation. Through the above structural design, the ligator provided in this application can effectively ligate the target hemorrhoid during the ligation operation. The procedure involves two steps: preliminary ligation and final ligation. Preliminary ligation primarily uses the second eversion flap 22 to pre-position the root of the hemorrhoid. This preliminary ligation is reversible and can be adjusted as needed. Final ligation involves placing the second rubber band 23 around the root of the hemorrhoid. This setup ensures accurate positioning of the second rubber band 23, reducing the difficulty of the ligation procedure, improving ease of use, and avoiding issues caused by errors in judgment or operation by medical staff, thus reducing patient discomfort and improving treatment efficiency.

[0033] Furthermore, when medical staff need to re-insert the new second rubber ring 23 into the second eversion flap 22, they can press the telescopic cylinder 9 to detach the second eversion flap 22 from the transparent cylinder 5. After the second eversion flap 22 is detached from the transparent cylinder 5, it can be pulled together by external force. After the second eversion flap 22 is pulled together, the outer circumference of the second eversion flap 22 is smaller. At this time, it is easier to insert the second rubber ring 23 into the second eversion flap 22, which improves the efficiency of medical staff in placing the second rubber ring 23.

[0034] The working principle of the technical solution provided by this invention is as follows: In use, medical personnel hold the handle 1 and press the bottom of the lever 7 with their fingers. Under the combined action of the lever 7 and the limiting block 3, the telescopic cylinder 9 and the sliding sleeve 18 will slide synchronously toward the transparent cylinder 5. At this time, the second outward flap 22 will detach from the transparent cylinder 5. After the second outward flap 22 detaches from the transparent cylinder 5, it can be gathered together under the pulling force of the external force. After the second outward flap 22 is gathered together, the outer circumference is smaller, making it easier for medical personnel to put the second rubber ring 23 into the second outward flap 22. After the second rubber ring 23 is put into the second outward flap 22, the medical personnel stop pressing the lever 7. Under the elastic force of the reset spring 8, the lever 7 will automatically reset. During the reset process of the lever 7, the telescopic cylinder 9 and the sliding sleeve 18 will also automatically reset. At this time, the second outward flap 22 will be re-attached to the outer wall of the transparent cylinder 5.

[0035] When ligation of a target hemorrhoid is required, medical personnel use a colonoscope to insert the end of the suction tube 4 near the target hemorrhoid, then align the end of the transparent tube 5 with the hemorrhoid to be treated. Finally, the negative pressure device is activated, allowing negative pressure to enter the suction tube 4 along the negative pressure tube 2. The negative pressure within the suction tube 4 draws the patient's hemorrhoid into the transparent tube 5. After the hemorrhoid is drawn in, the medical personnel press the bottom of the lever 7 with their fingers. Under the combined action of the lever 7 and the limiting block 3, the telescopic tube 9 slides towards the transparent tube 5. At this time, under the elastic force of the spring 17, the telescopic tube 9 and the sliding sleeve 18 slide synchronously towards the transparent tube 5. During this sliding process, the second eversion flap 22 and the first eversion flap 15 sequentially detach from the transparent tube 5 and are pulled together by the elastic force of the second rubber ring 23 and the first rubber ring 16, respectively. After the hemorrhoids are gathered together, the root of the hemorrhoids can be initially ligated. During the initial ligation process, if the ligation position of the second eversion piece 22 is deviated due to the operation error of the medical staff, the medical staff need to pull the telescopic cylinder 9 in the opposite direction. During the reverse sliding of the telescopic cylinder 9, the sliding sleeve 18 will be pulled synchronously under the blocking action of the baffle 12 and slide in the opposite direction with the telescopic cylinder 9. At this time, the second eversion piece 22 and the first eversion piece 15, which were originally gathered together, will gradually spread outward and slide back towards the transparent cylinder 5 and finally be re-fitted on the outer wall of the transparent cylinder 5. When the second eversion piece 22 and the first eversion piece 15 are reset to the initial position, the medical staff can readjust the position and direction of the transparent cylinder 5 adsorbing the hemorrhoids, and after confirming that the position is correct, push the telescopic cylinder 9 again towards the transparent cylinder 5 to perform initial ligation of the hemorrhoids.After the initial ligation is completed, the slider 19 has slid to the end of the groove 6. At this time, the second eversion flap 22 has also completely gathered together. Medical personnel can use a colonoscope to observe and judge whether the position of the second eversion flap 22 gathered together is reasonable. After confirming that it is correct, the medical personnel continue to push the telescopic cylinder 9. At this time, due to the blocking effect of the groove 6, the slider 19 cannot continue to slide, that is, the sliding sleeve 18 cannot continue to slide with the telescopic cylinder 9. The spring 17 deforms and folds together under the continuous pushing action of the telescopic cylinder 9. At this time, the telescopic cylinder 9 slides alone towards the transparent cylinder 5, and in the process of sliding, it continuously pushes the first eversion flap 15 towards the second eversion flap 22. During the continuous sliding of the first eversion flap 15, it will squeeze the second rubber ring 23 on the second eversion flap 22. Since both the second eversion flap 22 and the first eversion flap 15 are everted outwards... The second outward-curving flap 22 and the first outward-curving flap 15 rotate in the same outward direction. This design allows the "C"-shaped outline of the second outward-curving flap 22 to gradually open and flatten as the first outward-curving flap 15 compresses the second rubber ring 23. Meanwhile, the "C"-shaped outline of the first outward-curving flap 15 continues to rotate inward during compression, ensuring that the first outward-curving flap 15 continuously wraps around and holds the first rubber ring 16. As the second rubber ring 23 is continuously compressed, it gradually detaches from the second outward-curving flap 22 and eventually pops out from the end of the second outward-curving flap 22, ligating the root of the target hemorrhoid. After the second rubber ring 23 is ligated, the medical staff releases the lever 7, and the telescopic cylinder 9 automatically returns to its initial position. Simultaneously, the first outward-curving flap 15 and the second outward-curving flap 22 also return to their initial positions to facilitate subsequent ligation.

[0036] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A varicose vein ligator, comprising a handle, characterized in that, A negative pressure tube is fixedly connected to one side of the handle, a limit block is fixedly connected to the other side of the handle, an adsorption tube is fixedly connected to the top of the handle, a transparent cylinder is fixedly connected to the end of the adsorption tube, a lever is rotatably connected to the limit block, a reset spring is fixedly connected to the bottom outer wall of the lever, the end of the reset spring away from the lever abuts against the outer wall of the handle, a telescopic cylinder is slidably connected to the outer wall of the adsorption tube, a connecting rod is fixedly connected to the end of the telescopic cylinder near the lever, and the end of the connecting rod is rotatably connected to the top of the lever. The dispensing mechanism is used to assist medical personnel in dispensing the rubber ring to the base of the patient's hemorrhoids. The dispensing mechanism is connected to the transparent cylinder and the telescopic cylinder respectively.

2. The varicose vein ligator according to claim 1, characterized in that, The delivery mechanism includes a pusher cylinder fixedly connected to the end of the telescopic cylinder away from the connecting rod and several insert plates. A first bending piece is fixedly connected to one side of the insert plate, and a first outward flap is fixedly connected to one side of the first bending piece. The dispensing mechanism also includes a sliding sleeve that is slidably connected to the outer wall of the transparent cylinder. A plurality of second bending pieces are fixedly connected to one side of the sliding sleeve, and a second outward flap is fixedly connected to one side of the second bending pieces.

3. The varicose vein ligator according to claim 2, characterized in that, A baffle is fixedly connected to the end of the pusher cylinder away from the telescopic cylinder, and the baffle abuts against the outside of the sliding sleeve.

4. The varicose vein ligator according to claim 2, characterized in that, There is a gap between the inner wall of the pusher cylinder and the outer wall of the insert plate. A spring is installed in the gap. One end of the spring is fixedly connected to the outer wall of the sliding sleeve, and the other end of the spring is fixedly connected to the end of the telescopic cylinder.

5. The varicose vein ligator according to claim 2, characterized in that, Several sliders are fixedly connected to the inner circumference of the sliding sleeve, and several grooves corresponding to the positions of the sliders are opened on the outer wall of the transparent cylinder. The sliding sleeve and the transparent cylinder are slidably connected together by the sliders and the grooves.

6. The varicose vein ligator according to claim 2, characterized in that, The sliding sleeve has a slot that corresponds to the position of the insert plate, and the insert plate is inserted into the slot.

7. The varicose vein ligator according to claim 2, characterized in that, Both the first and second bent pieces have outwardly convex arc-shaped contours. Several first bent pieces and several second bent pieces are arranged alternately and interspersed, and the two together form a complete cylindrical structure.

8. The varicose vein ligator according to claim 2, characterized in that, Both the first and second outward-turning pieces are "C"-shaped outlines that turn outwards, and the size of the second outward-turning piece is larger than that of the first outward-turning piece. A second rubber ring and a first rubber ring are respectively installed inside the second and first outward-turning pieces.

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