Double-J tube with fluorescence guiding function
The double J tube with a fluorescent reaction mechanism addresses the challenge of ureter visualization in complex surgeries by enabling real-time ureter identification, enhancing surgical precision and safety.
Patent Information
- Application Number
- CN202421820132.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In complex surgery, especially laparoscopic surgery, it is difficult to accurately judge the shape of the ureter and distinguish the boundaries between different organs, resulting in possible accidental damage to adjacent tissues.
A double J tube with fluorescence guidance function is designed. By setting a reaction chamber and hot fuse in the transparent tube body, the chemical fluorescence reaction between the luminescent agent and the oxidant is activated using the human body temperature to provide visible light guidance, and combined with an elastic thermal conductive layer and a thermal conductive sheet to accelerate the reaction, ensuring the sustained and stable luminescence.
Improves the accuracy and safety of the surgery, reduces the risk of injury to adjacent tissues, especially in laparoscopic surgery, and improves the visualization and localization accuracy of the ureter.
Smart Images
Figure CN223095950U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a double-J tube with a fluorescence guiding function. Background Art
[0002] The ureter has a relatively long course in the abdominal cavity and is adjacent to tissues such as the colorectum and uterine appendages. During complex colorectal diseases, uterine appendage diseases, urinary diseases, or other surgeries that require delicate operations, one of the challenges faced by doctors is how to accurately judge the course of the ureter, locate its tissue layer, and distinguish the boundaries between different organs. Inside the human body, various tissues and organs are closely connected. Especially under the influence of factors such as pelvic and abdominal inflammation and tumors, the anatomical structures adhere densely, and the boundaries between tissues are blurred during intraoperative dissection. In such cases, even experienced surgeons can hardly avoid accidentally injuring the ureter to adjacent tissues.
[0003] In previous open surgeries, double-J tubes were often placed in the ureter, and during the operation, the course and layer were judged by palpating the hard tactile sensation of the double-J tube.
[0004] If the ureter has a light-emitting light source inside, it can help doctors clearly identify the course of the ureter, tissue layer, and boundary during the operation. Especially in laparoscopic surgery, because laparoscopic instruments are used for operation and the tactile sensation of the hand is lost, using light guiding can improve the accuracy and safety of the operation and avoid accidentally injuring the ureter during the operation. Summary of the Utility Model
[0005] In view of this, the purpose of the utility model is to provide a double-J tube with a fluorescence guiding function.
[0006] The technical solution adopted by the utility model to solve its technical problems is to provide a double-J tube with a fluorescence guiding function, which includes a transparent tube body. The transparent tube body has an outer wall and an inner wall. A first wall is hermetically connected to the inner wall. There is a reaction cavity between the first wall and the inner wall that can hold a luminescent agent. The reaction cavity is provided with a plurality of hot-melt blocks. Each hot-melt block has an inner cavity that can hold an oxidant. The hot-melt block has a melting point lower than the human body temperature.
[0007] As a further improvement of the utility model, the first wall has elasticity.
[0008] As a further improvement of the utility model, an elastic heat-conducting layer is provided on the inner surface of the first wall, and the hot-melt blocks are all fixed on the elastic heat-conducting layer.
[0009] As a further improvement of the utility model, a plurality of elastic heat-conducting sheets are arranged at intervals on the inner surface of the first wall, and at least half of the hot-melt blocks are fixed on the elastic heat-conducting sheets.
[0010] As a further improvement of the present utility model, half of the hot melt blocks are fixed on the elastic heat conducting sheet, and the other half of the hot melt blocks are separated from the elastic heat conducting sheet.
[0011] As a further improvement of the present utility model, the interval between adjacent elastic heat conducting sheets is equal to the width of the elastic heat conducting sheet. Half of the hot melt blocks are fixed on the elastic heat conducting sheet, and the other half of the hot melt blocks are fixed on the inner surface of the first wall.
[0012] As a further improvement of the present utility model, the surface of the outer wall is provided with a heparin sodium coating.
[0013] As a further improvement of the present utility model, the hot melt blocks are made of wax material.
[0014] The beneficial effects of the present utility model are at least as follows: During the process of inserting the double-J tube into the human body, the body temperature of the human body will be transferred to the double-J tube. When there is no elastic heat conducting layer or elastic heat conducting sheet, the body temperature will first heat the luminescent agent in the reaction cavity. The heated luminescent agent will heat the hot melt blocks, causing the hot melt blocks to dissolve, so that the oxidant in the hot melt blocks will fuse with the luminescent agent to produce a chemiluminescence reaction. Of course, the luminescent agent can also be placed in the inner cavity and the oxidant can be placed in the reaction cavity; The provision of the elastic heat conducting layer and the elastic heat conducting sheet can quickly conduct the body temperature to the hot melt blocks and dissolve them, without the need to first heat the solution in the reaction cavity, with rapid luminescence. And half of the hot melt blocks are on the elastic heat conducting sheet and the other half are separated, which can achieve continuous and stable luminescence. At first, the hot melt blocks on the elastic heat conducting sheet are dissolved for chemiluminescence reaction. Subsequently, after the body temperature heats the luminescent agent in the reaction cavity, the remaining half of the hot melt blocks are gradually dissolved for chemiluminescence reaction, increasing the duration of luminescence. Description of the Drawings
[0015] Figure 1 is the structural schematic diagram of the present utility model;
[0016] Figure 2 is the partial structural cross-sectional view of the first embodiment of the present utility model;
[0017] Figure 3 is the partial structural cross-sectional view of the second embodiment of the present utility model;
[0018] Figure 4 is Figure 1 the cross-sectional view with the hot melt blocks omitted along the A-A direction in Detailed Embodiments
[0019] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings.
[0020] Refer to Figures 1-4, the present utility model proposes a double-J tube with a fluorescence guiding function, which includes a transparent tube body 1. The transparent tube body 1 has an outer wall 11 and an inner wall 12. A first wall 2 is hermetically connected to the inner wall 12. There is a reaction cavity 3 between the first wall 2 and the inner wall 12 that can hold a luminescent agent. The reaction cavity 3 is provided with a plurality of hot melt blocks 4. Each hot melt block 4 has an inner cavity 41 that can hold an oxidant. The hot melt block 4 has a melting point lower than the human body temperature. During the process of inserting the transparent tube body 1 into the human body, the body temperature of the human body will be transmitted to the transparent tube body 1. The body temperature will first heat the luminescent agent in the reaction cavity 3, and the heated luminescent agent will heat the hot melt block 4 to dissolve the hot melt block 4, so that the oxidant in the hot melt block 4 is fused with the luminescent agent to produce a chemiluminescence reaction. Of course, the luminescent agent can also be placed in the inner cavity 41 and the oxidant can be placed in the reaction cavity 3. Of course, the melting point is preferably also higher than 35 degrees to avoid the hot melt block 4 from dissolving before use.
[0021] As a further improvement of the present utility model, the first wall 2 has elasticity to avoid damaging the human body and enable the transparent tube body 1 to adapt to the bending of the pipeline during the process of inserting it into the human body.
[0022] As a further improvement of the present utility model, an elastic heat conducting layer is provided on the inner surface of the first wall 2. The hot melt blocks 4 are all fixed on the elastic heat conducting layer. The provision of the elastic heat conducting layer can quickly conduct the body temperature to the hot melt blocks 4 and dissolve them, without first heating the solution in the reaction cavity 3, and the luminescence is rapid.
[0023] As a further improvement of the present utility model, a plurality of elastic heat conducting sheets 5 are spaced on the inner surface of the first wall 2. At least half of the hot melt blocks 4 are fixed on the elastic heat conducting sheets 5. The hot melt blocks 4 can be dissolved without first heating the solution in the reaction cavity 3, and the luminescence is rapid.
[0024] As a further improvement of the present utility model, half of the hot melt blocks 4 are fixed on the elastic heat conducting sheets 5, and the other half of the hot melt blocks 4 are separated from the elastic heat conducting sheets 5. And half of the hot melt blocks are on the elastic heat conducting sheets and the other half are separated, which can achieve continuous and stable luminescence. At first, the hot melt blocks 4 on the elastic heat conducting sheets 5 are dissolved for chemiluminescence reaction. Subsequently, after the body temperature heats the luminescent agent in the reaction cavity 3, the remaining half of the hot melt blocks 4 are gradually dissolved for chemiluminescence reaction, increasing the duration of luminescence.
[0025] As a further improvement of the present utility model, the interval between adjacent elastic heat conducting sheets 5 is equal to the width of the elastic heat conducting sheets 5. Half of the hot melt blocks 4 are fixed on the elastic heat conducting sheets 5, and the other half of the hot melt blocks 4 are fixed on the inner surface of the first wall 2. Since the hot melt blocks 4 have a certain weight, fixing the other half of the hot melt blocks 4 on the inner surface of the first wall 2 can make the hot melt blocks 4 evenly distributed.
[0026] As a further improvement of the present utility model, the surface of the outer wall 11 is provided with a heparin sodium coating; the coating has a long-lasting effect and slowly releases after being implanted into the human body, which can inhibit the formation, polymerization and adhesion of fibrin, and then reduce the deposition of urinary salt crystals, delay and prevent catheter encrustation, prevent the generation of urinary salt deposition, and can extend its indwelling time in the human body.
[0027] As a further improvement of the present utility model, the hot melt block 4 is made of wax material, which has a low cost, is easy to control the temperature setting, and is light in weight.
Claims
1. A double-J stent with fluorescence guidance function, characterized in that, It includes a transparent tube body (1), the transparent tube body (1) has an outer wall (11) and an inner wall (12), a first wall (2) is hermetically connected to the inner wall (12), a reaction chamber (3) capable of containing a luminescent agent is formed between the first wall (2) and the inner wall (12), a plurality of hot-melt blocks (4) are arranged in the reaction chamber (3), each hot-melt block (4) has an inner cavity (41) capable of containing an oxidant, and the hot-melt block (4) has a melting point lower than the human body temperature.
2. The double-J tube with a fluorescence guidance function according to claim 1, characterized in that, The first wall (2) has elasticity.
3. A double-J tube with a fluorescence guidance function according to claim 1, characterized in that, An elastic heat-conducting layer is provided on the inner surface of the first wall (2), and the hot-melt blocks (4) are all fixed on the elastic heat-conducting layer.
4. A double-J tube with a fluorescence guidance function according to claim 1, characterized in that, A plurality of elastic heat-conducting sheets (5) are arranged at intervals on the inner surface of the first wall (2), and at least half of the hot-melt blocks (4) are fixed on the elastic heat-conducting sheets (5).
5. A double-J tube with a fluorescence guidance function according to claim 4, characterized in that, Half of the hot-melt blocks (4) are fixed on the elastic heat-conducting sheets (5), and the other half of the hot-melt blocks (4) are separated from the elastic heat-conducting sheets (5).
6. A double-J tube with a fluorescence guidance function according to claim 4, characterized in that, The interval between adjacent elastic heat-conducting sheets (5) is equal to the width of the elastic heat-conducting sheets (5), half of the hot-melt blocks (4) are fixed on the elastic heat-conducting sheets (5), and the other half of the hot-melt blocks (4) are fixed on the inner surface of the first wall (2).
7. A double-J tube with a fluorescence guidance function according to claim 1, characterized in that, A heparin sodium coating is provided on the surface of the outer wall (11).
8. A double-J tube with a fluorescence guidance function according to claim 1, characterized in that, The hot-melt block (4) is made of wax material.