Circulating negative pressure flushing sheath with bendable head end
By introducing an elastic guide head and an exhaust tube structure into the flexible circulating negative pressure irrigation sheath at the head end, the problems of water injection and disassembly disinfection during kidney stone surgery are solved, achieving the effects of kidney protection and equipment cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 核工业四一六医院
- Filing Date
- 2024-02-28
- Publication Date
- 2026-04-21
AI Technical Summary
Existing flexible-head circulating negative pressure irrigation sheaths cannot effectively inject water and disassemble for disinfection during kidney stone lithotripsy, leading to kidney damage and high equipment operating costs.
A flexible, circulating negative pressure flushing sheath with a bendable head was designed. The inner wall is equipped with an elastic guide head and an air outlet tube. The diaphragm expands and compresses air through the pressure of water flow, realizing the integration of water injection and suction. The air outlet tube can be quickly disassembled for disinfection by pressing the snap-fit block.
This technology enables simultaneous water injection and aspiration during kidney surgery, preventing kidney damage while reducing equipment operating costs and improving equipment reusability.
Smart Images
Figure CN224140879U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, specifically a bendable, circulating negative pressure flushing sheath. Background Technology
[0002] Under the combined negative pressure of the suction sheath, rapid water circulation can promptly remove the broken stones, achieving simultaneous stone fragmentation and suction, which greatly improves stone fragmentation efficiency and ensures a clear surgical field. This reduces the risk of complications such as infection and kidney damage caused by excessively long operation time (negative pressure technology combined with ureteroscopic lithotripsy can be appropriately extended to within 120 minutes depending on stone size, CT value, and patient's basic condition, but is not recommended to exceed 180 minutes; staged surgery may be necessary).
[0003] While existing flexible-ended circulating negative pressure irrigation sheaths can remove kidney stones from patients' kidneys, they cannot inject water into the kidneys when breaking up and suctioning out the stones from the inner wall of the kidneys. This causes the space inside the kidneys to collapse during the air extraction process, resulting in damage to the kidneys. At the same time, the tubes cannot be disassembled and disinfected, increasing the cost of using the equipment and reducing the versatility and reusability of traditional flexible-ended circulating negative pressure irrigation sheaths. Therefore, a flexible-ended circulating negative pressure irrigation sheath was introduced. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a flexible, reusable negative pressure flushing sheath with a bendable head end, which has the advantages of strong reusability and versatility, thus solving the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a head-end bendable circulating negative pressure flushing sheath, including a negative pressure flushing sheath body, an elastic guide head provided on the inner wall of the negative pressure flushing sheath body, a circular groove opened on the outer wall of the negative pressure flushing sheath body, a connecting pipe fixedly assembled on the inner wall of the circular groove, a movable groove opened on the outer wall of the end of the connecting pipe away from the negative pressure flushing sheath body, a snap-fit groove opened on the end of the connecting pipe away from the negative pressure flushing sheath body, a limit post slidably connected to the inner wall of the movable groove, and a snap-fit block provided at the bottom of the limit post.
[0006] As a preferred embodiment of this utility model, an air outlet pipe is fixedly fitted to the end of the snap-fit block away from the connecting pipe, and a diaphragm is fixedly fitted to the inner wall of the air outlet pipe.
[0007] As a preferred technical solution of this utility model, both the snap-fit block and the limiting post 10 are made of rubber, and the air outlet pipe is snapped to the connecting pipe through the snap-fit block.
[0008] As a preferred embodiment of this utility model, the snap-fit block is slidably connected to the inner wall of the snap-fit groove via an air outlet pipe, and the elastic guide head is slidably connected to the inner wall of the negative pressure flushing sheath body.
[0009] As a preferred embodiment of this utility model, there are four sets of moving grooves and four sets of snap-fit grooves, and the four sets of moving grooves and snap-fit grooves are respectively located in a ring on the outer wall of the connecting pipe.
[0010] As a preferred embodiment of this utility model, there are four sets of locking blocks and limiting posts, and the four sets of locking blocks and limiting posts are respectively located on the outer wall of the end of the air outlet pipe away from the connecting pipe in a ring distribution.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. This flexible, circulating negative pressure flushing sheath, when used during surgery, is delivered from the urethra to the inside of the kidney. While crushing and removing stones, water is pumped from the inner wall of the sheath to the kidney. This water flow, through the inner wall of the circular groove to the inner wall of the ventilator, applies pressure to the tympanic membrane, causing it to expand and compress the air inside the ventilator. This forces the air out through the ventilator's outlet. Simultaneously, it absorbs the crushed stones, preventing them from falling back into the kidney. This allows for simultaneous air intake and water delivery to the kidney, preventing damage caused by simply suctioning air from the kidney. It achieves simultaneous water intake and suction.
[0013] 2. The head end is a bendable circulating negative pressure flushing sheath. After the patient's surgery, the air outlet tube can be pressed to slide on the inner wall of the moving groove. At the same time, pressure is applied to the locking block, causing it to flatten under pressure. This allows the air outlet tube to be pulled out from the inner wall of the locking groove for disassembly and disinfection. The air outlet tube can be reused, reducing the operating cost of the equipment and solving the problem of rapid disassembly and disinfection. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the circular groove structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the air outlet pipe structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the tympanic membrane structure of this utility model;
[0018] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.
[0019] In the diagram: 1. Negative pressure flushing sheath body; 2. Elastic guide head; 3. Circular groove; 4. Air outlet pipe; 5. Connecting pipe; 6. Snap-fit block; 7. Snap-fit groove; 8. Drum; 9. Moving groove; 10. Limiting post. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-5 The head-end bendable circulating negative pressure flushing sheath includes a negative pressure flushing sheath body 1. The inner wall of the negative pressure flushing sheath body 1 is provided with an elastic guide head 2. The outer wall of the negative pressure flushing sheath body 1 is provided with a circular groove 3. The inner wall of the circular groove 3 is fixedly fitted with a connecting pipe 5. The outer wall of the end of the connecting pipe 5 away from the negative pressure flushing sheath body 1 is provided with a moving groove 9. The end of the connecting pipe 5 away from the negative pressure flushing sheath body 1 is provided with a snap-fit groove 7. The inner wall of the moving groove 9 is slidably connected with a limit post 10. The bottom of the limit post 10 is provided with a snap-fit block 6.
[0022] It should be noted that after the patient's surgery, by pressing the vent tube 4, the vent tube 4 slides on the inner wall of the moving groove 9. At the same time, pressure is applied to the locking block 6, causing the locking block 6 to flatten under pressure. This allows the vent tube 4 to be pulled out from the inner wall of the locking groove 7, enabling the vent tube 4 to be removed and disinfected. This allows the vent tube 4 to be reused, reducing the cost of using the equipment and solving the problem of rapid disassembly and disinfection of the equipment.
[0023] In a preferred embodiment, an air outlet pipe 4 is fixedly fitted to the end of the snap-fit block 6 away from the connecting pipe 5, and a diaphragm 8 is fixedly fitted to the inner wall of the air outlet pipe 4.
[0024] It should be noted that during surgery, the negative pressure flushing sheath 1 is delivered from the urethra to the inside of the kidney. While the stones inside the kidney are being crushed and aspirated, water is also delivered from the inner wall of the negative pressure flushing sheath 1 to the kidney. This water, flowing from the inner wall of the circular groove 3 to the inner wall of the vent tube 4, applies pressure to the tympanic membrane 8, causing it to expand and compress the air inside the vent tube 4. This forces the air out of the vent tube 4 through its outlet. Simultaneously, the crushed stones are absorbed to prevent them from falling back into the kidney. This allows for simultaneous air intake and water delivery to the kidney, preventing damage caused by simply suctioning air from the kidney and collapsing the internal space. Thus, it achieves simultaneous water intake and suction.
[0025] In a preferred embodiment, both the snap-fit block 6 and the limiting post 10 are made of rubber, and the vent pipe 4 is snapped into the connecting pipe 5 via the snap-fit block 6.
[0026] It should be noted that the locking block 6 is made of rubber, so that when the limiting post 10 presses the locking block 6, the locking block 6 will be flattened, which makes it easier to quickly remove the vent pipe 4.
[0027] In a preferred embodiment, the snap-fit block 6 is slidably connected to the inner wall of the snap-fit groove 7 via the air outlet pipe 4, and the elastic guide head 2 is slidably connected to the inner wall of the negative pressure flushing sheath body 1.
[0028] It should be noted that by sliding the locking block 6 against the inner wall of the locking groove 7, the air outlet pipe 4 is locked and positioned against the inner wall of the locking groove 7.
[0029] In a preferred embodiment, there are four sets of movable grooves 9 and snap-fit grooves 7, and the four sets of movable grooves 9 and snap-fit grooves 7 are respectively located in a ring on the outer wall of the connecting pipe 5.
[0030] It should be noted that there are four sets of movable slots 9 and snap-fit slots 7, which enable the placement of four sets of snap-fit blocks 6 and limiting posts 10, and also limit the snap-fit blocks 6 and limiting posts 10.
[0031] In a preferred embodiment, there are four sets of locking blocks 6 and limiting posts 10, and the four sets of locking blocks 6 and limiting posts 10 are respectively located in a ring on the outer wall of the end of the air outlet pipe 4 away from the connecting pipe 5.
[0032] It should be noted that the four sets of locking blocks 6 and limiting posts 10 achieve a better locking and fixing effect on the air outlet pipe 4, and at the same time, it will not fall off during operation.
[0033] The working principle is as follows: when water is injected into the kidney, the water flows from the inner wall of the circular groove 3 into the connecting tube 5 and the air outlet tube 4. The water pressure applies pressure to the tympanic membrane 8, causing the tympanic membrane 8 to expand and compress the air inside the air outlet tube 4. This forces the air inside the air outlet tube 4 to exit through the air outlet of the air outlet tube 4. At the same time, it also absorbs the broken stones, preventing the water from bringing the stones back into the body during the delivery process. After the operation, pressing the limiting post 10 applies pressure to the locking block 6, causing the locking block 6 to deform, making it easy for the staff to remove the air outlet tube 4 for disinfection and cleaning for reuse. This also reduces the cost of using the equipment. Thus, the negative pressure flushing sheath can simultaneously inject water into the kidney and suction water out of the kidney.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A head-end bendable loop negative pressure irrigation sheath comprising a negative pressure irrigation sheath body (1), characterized in that: The inner wall of the negative pressure flushing sheath body (1) is provided with an elastic guide head (2), the outer wall of the negative pressure flushing sheath body (1) is provided with a circular groove (3), the inner wall of the circular groove (3) is fixedly fitted with a connecting pipe (5), the outer wall of the end of the connecting pipe (5) away from the negative pressure flushing sheath body (1) is provided with a moving groove (9), the end of the connecting pipe (5) away from the negative pressure flushing sheath body (1) is provided with a snap-fit groove (7), the inner wall of the moving groove (9) is slidably connected with a limiting post (10), and the bottom of the limiting post (10) is provided with a snap-fit block (6).
2. The bendable circulating negative pressure flushing sheath at the head end according to claim 1, characterized in that: The end of the snap-fit block (6) away from the connecting pipe (5) is fixedly fitted with an air outlet pipe (4), and the inner wall of the air outlet pipe (4) is fixedly fitted with a diaphragm (8).
3. The hydrophilic, hydrogellable, head-bendable, looped, negative pressure, flushable, Foley-like urinary catheter of claim 2, wherein: Both the snap-fit block (6) and the limiting post (10) are made of rubber, and the air outlet pipe (4) is snapped to the connecting pipe (5) through the snap-fit block (6).
4. The hydrophilic, hydrogellable, head-bendable, looped, negative pressure, flushable, Foley-like urinary catheter of claim 1, wherein: The snap-fit block (6) is slidably connected to the inner wall of the snap-fit groove (7) through the air outlet pipe (4), and the elastic guide head (2) is slidably connected to the inner wall of the negative pressure flushing sheath body (1).
5. The bendable circulating negative pressure flushing sheath at the head end according to claim 1, characterized in that: There are four sets of each of the moving groove (9) and the snap-fit groove (7), and the four sets of moving groove (9) and snap-fit groove (7) are respectively located in a ring on the outer wall of the connecting pipe (5).
6. The bendable circulating negative pressure flushing sheath at the head end according to claim 1, characterized in that: There are four sets of the snap-fit blocks (6) and the limiting posts (10), and the four sets of snap-fit blocks (6) and limiting posts (10) are respectively located on the outer wall of the air outlet pipe (4) away from the connecting pipe (5) in a ring.