Precise laser welding device for vena cava stent
By introducing an adjustment component into the precision laser welding device for vena cava stents and optimizing the water pipe layout, the problem of uneven cooling was solved, achieving uniform cooling to adapt to different device models, and improving welding quality and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ANTAI BIOMEDICAL MATERIALS CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-05
AI Technical Summary
Existing precision laser welding equipment for vena cava stents suffers from uneven cooling during the cooling process, leading to overheating or overcooling in some areas, which affects welding quality and equipment stability. In particular, when different models of welding equipment have different sizes, the fixed water pipe cooling method cannot be adapted accordingly.
By employing adjustment components one and two, the layout of the sliding water pipes within the mounting plate is optimized. The density of the water pipes is adjusted using screws and handles to ensure concentrated cooling and adapt to the cooling requirements of different models of precision laser welding equipment.
It achieves uniform cooling effect on different models of precision laser welding equipment, improves welding quality and equipment stability, and is simple to operate and highly applicable.
Smart Images
Figure CN224196117U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to a precision laser welding device for vena cava stents. Background Technology
[0002] A vena cava stent is a spring-like device placed in the superior or inferior vena cava to improve venous return. It comes in bare-metal and covered forms and requires a delivery system for insertion. It can be used to treat conditions such as superior vena cava compression syndrome and Budd-Chiari syndrome.
[0003] As a medical device, the quality and performance of vena cava stents directly affect the treatment effect and life safety of patients. Therefore, the welding precision requirements for stents are extremely high. Laser welding equipment can achieve micron-level welding precision, ensuring that every welding point of the stent meets the design requirements, thereby guaranteeing the structural integrity and performance of the stent.
[0004] However, the welding device itself generates a significant amount of heat during laser welding. Without effective cooling, this can lead to overheating, affecting welding quality and equipment stability. Therefore, existing precision laser welding devices for vena cava stents are equipped with cooling mechanisms, most of which employ circulating water cooling. A water pump drives water from a tank through pipes to cool the precision laser welding device body placed on top of the mounting plate. While existing cooling mechanisms address the cooling problem to some extent, they still have some shortcomings.
[0005] However, existing precision laser welding equipment uses fixed water pipe cooling. In this method, the water pipes are fixed to the bottom of the mounting plate, and their layout and cooling range are relatively fixed. However, due to differences in size, shape, and welding area layout among different models of precision laser welding equipment, this fixed water pipe cooling method is inflexible and lacks adaptability. When the size of the precision laser welding equipment is small, the welding area and the generated heat are relatively concentrated because the unit area occupied by the equipment on the mounting plate is small. Furthermore, because the water pipe layout is fixed, the cooling range cannot be adjusted according to the actual size of the welding equipment, resulting in unsatisfactory cooling effects. Some welding areas may not receive sufficient cooling, leading to uneven cooling. That is, with a fixed water pipe layout, the cooling water flow may not evenly cover the entire welding area, causing some areas to overheat while others may overcool. This uneven cooling, in turn, affects the welding quality and causes inconvenience in actual use.
[0006] Therefore, it is necessary to provide a new precision laser welding device for vena cava stents to solve the above-mentioned technical problems. Utility Model Content
[0007] To solve the above-mentioned technical problems, this utility model provides a precision laser welding device for vena cava stents.
[0008] The precision laser welding device for vena cava stents provided by this utility model includes: a hollow mounting plate, a mounting groove for placing the body of the precision laser welding device is provided on the top of the mounting plate, a cooling mechanism is provided below the mounting plate, the cooling mechanism is connected in sequence by water pipes, an adjustment component is slidably provided on the bottom wall of the mounting plate, and one end of the water pipe passes through the surface of the mounting plate and is respectively engaged with the surface of the adjustment component.
[0009] Two adjustment components are threadedly connected to one side of the mounting plate for adjusting the water pipe layout. Each adjustment component includes a screw and a handle fixed to one end of the screw. The other end of the screw passes through the surface of the mounting plate and is in contact with the surface of the adjustment component.
[0010] Preferably, the bottom wall of the mounting plate has two oppositely distributed sliding grooves, and the adjusting component slides on the bottom wall of the sliding grooves;
[0011] The adjustment assembly includes several sliders and several limiting plates fixed to the top of the sliders. The bottom of the sliders slides on the bottom wall of the groove. The surface of each limiting plate is provided with a slot. One end of the water pipe passes through the surface of the mounting plate and engages with the surface of each slot.
[0012] Preferably, the slide groove has symmetrically formed limiting grooves on both sides, and the two ends of the plurality of sliders slide on the inner sidewalls of the two limiting grooves respectively.
[0013] Preferably, the mounting slots are distributed in a stepped manner.
[0014] Preferably, the bottom of the mounting plate is provided with a fixing plate, the fixing plate and the mounting plate are fixedly connected by a bracket, and the bottom of the fixing plate is fixed with a plurality of equidistant casters.
[0015] Preferably, the cooling mechanism is fixed to the top of the fixed plate. The cooling mechanism includes a water tank and a water pump. The water tank and the water pump are both fixed to the top of the fixed plate. The water tank and the water pump are fixedly connected by a water pipe, and the surface of the water pipe is also provided with a valve.
[0016] Compared with related technologies, the precision laser welding device for vena cava stents provided by this utility model has the following advantages:
[0017] This invention establishes two adjustment components: Adjustment Component 1 and Adjustment Component 2. Adjustment Component 1 slides on the bottom wall of the mounting plate. One end of a water pipe passes through the surface of the mounting plate and engages with the surface of Adjustment Component 1. In use, the screw is turned by hand, causing the other end of the screw to contact the surface of Adjustment Component 1. Turning the screw again causes Adjustment Component 1 to slide on the bottom wall of the mounting plate. Because the water pipe engages with the surface of Adjustment Component 1, the water pipe moves with the movement of Adjustment Component 1, thereby optimizing the layout of the water pipe inside the mounting plate. This adjusts the density of the water pipes within the mounting plate, resulting in a more concentrated cooling area. This solves the problems of unsatisfactory cooling effects and insufficient cooling of some welding areas when the size of the precision laser welding device is different. The smaller the size of the precision laser welding device, the smaller the unit area occupied by the mounting plate, and the more concentrated the welding area and the generated heat. This invention is applicable to the cooling of different models of precision laser welding devices and has the advantages of simple operation and good performance. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall structure of the precision laser welding device for the vena cava stent provided by this utility model;
[0019] Figure 2 This is a schematic diagram of the mounting slot structure;
[0020] Figure 3 This is a schematic diagram of the cooling pipe structure;
[0021] Figure 4 A cross-sectional structural schematic diagram of the precision laser welding device for the vena cava stent provided by this utility model.
[0022] Numbered in the diagram: 1. Mounting plate; 11. Fixing plate; 12. Caster wheel; 13. Mounting groove; 14. Slide groove; 141. Limiting groove; 2. Precision laser welding device body; 3. Water tank; 31. Water pump; 32. Valve; 33. Water pipe; 4. Screw; 41. Handle; 5. Limiting plate; 51. Slider; 511. Slot. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Please refer to the following: Figures 1 to 4 ,in, Figure 1 A schematic diagram of the overall structure of the precision laser welding device for the vena cava stent provided by this utility model; Figure 2 This is a schematic diagram of the mounting slot structure; Figure 3 This is a schematic diagram of the cooling pipe structure; Figure 4A cross-sectional structural schematic diagram of the precision laser welding device for the vena cava stent provided by this utility model.
[0025] In the specific implementation process, such as Figures 1 to 4 As shown, it includes a hollow mounting plate 1. The top of the mounting plate 1 is provided with a mounting groove 13 for placing the body 2 of the precision laser welding device. A cooling mechanism is provided below the mounting plate 1. The cooling mechanism is connected in sequence through water pipes 33. An adjustment component 1 slides on the bottom wall of the mounting plate 1. One end of the water pipe 333 passes through the surface of the fixed plate 11 and is engaged with the surface of the adjustment component 1.
[0026] Two adjustment components are threadedly connected to one side of the fixing plate 11 for adjusting the layout of the water pipe 33. Both adjustment components include a screw 4 and a handle 41 fixed to one end of the screw 4. The other end of the screw 4 passes through the surface of the fixing plate 11 and is in contact with the surface of the adjustment component.
[0027] The bottom wall of the mounting plate 1 has two oppositely distributed sliding grooves 14, and the adjustment component 1 slides on the bottom wall of the sliding groove 14.
[0028] The adjustment assembly includes several sliders 51 and several limiting plates 5 fixed to the top of the sliders 51. The bottom of the sliders 51 slides on the bottom wall of the slide groove 14. The surface of each limiting plate 5 is provided with a slot 511, and one end of the water pipe 333 passes through the surface of the mounting plate 1 and is engaged with the surface of the slots 511 respectively.
[0029] It should be noted that by setting up adjustment component one and adjustment component two, adjustment component one slides on the bottom wall of the mounting plate, one end of water pipe 33 passes through the surface of mounting plate 1 and is engaged with the surface of adjustment component one. In use, by holding handle 41 and turning screw 4, since the other end of screw 4 is in contact with the slot 511 on the surface of limiting plate 5, when screwing screw 4, the two ends of several sliders 51 in adjustment component one slide on the bottom wall of two relatively distributed sliding grooves 14 opened on the bottom wall of mounting plate 1. Since water pipe 33 is engaged with the surface of several slots 511 in adjustment component one, water pipe 33 will move with the movement of several limiting plates 5, thereby optimizing the layout of water pipe 33 inside mounting plate 1, that is, adjusting the density of water pipe 33 inside mounting plate 1, so that the cooling range of water pipe 33 is more concentrated.
[0030] It should be noted that the aforementioned precision laser welding device body 2 is existing technology. Its working principle is as follows: utilizing the high energy density of a laser beam, by precisely controlling parameters such as the laser beam's energy, spot size, and movement speed, the various components of the vena cava stent are locally and rapidly heated, causing them to melt and connect quickly. During the melting process, metal atoms or molecules combine and diffuse, forming a strong weld. Simultaneously, because the heat generated during laser welding is relatively small and the heat-affected zone is limited, the overall performance and shape stability of the stent can be maintained to the greatest extent possible.
[0031] refer to Figure 1 , Figure 3 as well as Figure 4 As shown, limiting grooves 141 are symmetrically opened on both sides of the slide groove 14, and the two ends of several sliders 51 slide on the inner sidewalls of the two limiting grooves 141 respectively.
[0032] The mounting slots 13 are arranged in a stepped pattern;
[0033] It should be noted that the limiting groove 141 is mainly used to limit the slider 51 and prevent the slider 51 from disengaging from the groove 14 during the sliding process.
[0034] It should be noted that the stepped mounting slots 13 can be used to place different models of precision laser welding device bodies 1, and the mounting slots 13 can prevent the precision laser welding device body 1 from sliding off the top of the mounting plate 1 when it is placed on the top of the mounting plate 1.
[0035] refer to Figures 1 to 4 As shown, the bottom of the mounting plate 1 is provided with a fixing plate 11, which is fixedly connected to the mounting plate 1 by a bracket, and a number of equidistant casters 12 are fixed to the bottom of the fixing plate 11.
[0036] The cooling mechanism is fixed on the top of the fixed plate 11. The cooling mechanism includes a water tank 3 and a water pump 31. The water tank 3 and the water pump 31 are both fixed on the top of the fixed plate 11. The water tank 3 and the water pump 31 are fixedly connected by a water pipe 333. A valve 32 is also provided on the surface of the water pipe 333.
[0037] It should be noted that the casters 12 are used for the movement of the entire device;
[0038] It should be further explained that the cooling mechanism consists of a water tank 3, a water pump 31, and a valve 32. In use, the water pump 31 is driven and the valve 32 is opened so that the water in the water tank 3 flows into the water pipe 33 in the mounting plate 1 under the action of the water pump 31. The function of the valve 32 is to control the opening and closing of the water flow and to adjust the size of the water flow.
[0039] The working principle of this utility model is as follows: In use, the precision laser welding device body 2 is first placed on the bottom wall of the mounting groove 13, the water pump 31 is driven and the valve 32 is opened so that the water in the water tank 3 flows into the water pipe 33 in the mounting plate 1 under the action of the water pump 31. The handle 41 is held and the screw 4 is turned. Since the other end of the screw 4 is in contact with the slot 511 on the surface of the limiting plate 5, when the screw 4 is turned, the two ends of several sliders 51 in the adjusting component 1 slide on the bottom wall of the two relatively distributed sliding grooves 14 opened on the bottom wall of the mounting plate 1. The water pipe 33 will move with the movement of several limiting plates 5, thereby optimizing the layout of the water pipe 33 inside the mounting plate 1, and adjusting the density of the water pipe 33 in the mounting plate 1, so that the cooling range of the water pipe 33 is more concentrated.
[0040] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A precision laser welding device for vena cava stents, characterized in that, The device includes a hollow mounting plate (1), with a mounting groove (13) on the top of the mounting plate (1) for placing the body (2) of the precision laser welding device. A cooling mechanism is provided below the mounting plate (1), and the cooling mechanism is connected in sequence by water pipes (33). An adjustment component 1 slides on the bottom wall of the mounting plate (1), and one end of the water pipe (33) passes through the surface of the mounting plate (1) and is engaged with the surface of the adjustment component 1. The mounting plate (1) has two threaded connections on one side for adjusting the layout of the water pipes (33). Both adjustment components include a screw (4) and a handle (41) fixed to one end of the screw (4). The other end of the screw (4) passes through the surface of the fixing plate (11) and is in contact with the surface of the adjustment component.
2. The precision laser welding device for vena cava stents according to claim 1, characterized in that, The bottom wall of the mounting plate (1) has two oppositely distributed sliding grooves (14), and the adjusting component slides on the bottom wall of the sliding grooves (14); The adjustment assembly includes a plurality of sliders (51) and a plurality of limiting plates (5) fixed on the top of the plurality of sliders (51). The bottom of the plurality of sliders (51) slides on the bottom wall of the slide groove (14). The surfaces of the plurality of limiting plates (5) are provided with slots (511). One end of the water pipe (33) passes through the surface of the mounting plate (1) and is engaged with the surfaces of the plurality of slots (511).
3. The precision laser welding device for vena cava stents according to claim 2, characterized in that, The slide (14) has symmetrically provided limiting grooves (141) on both sides, and the two ends of the several sliders (51) slide on the inner sidewalls of the two limiting grooves (141) respectively.
4. The precision laser welding device for vena cava stents according to claim 3, characterized in that, The mounting slots (13) are arranged in a stepped pattern.
5. The precision laser welding apparatus for vena cava stents according to claim 4, characterized in that, The mounting plate (1) has a fixing plate (11) at its bottom. The fixing plate (11) is fixedly connected to the mounting plate (1) by a bracket, and the bottom of the fixing plate (11) is fixed with a number of equidistant casters (12).
6. The precision laser welding apparatus for vena cava stents according to claim 5, characterized in that, The cooling mechanism is fixed to the top of the fixed plate (11). The cooling mechanism includes a water tank (3) and a water pump (31). The water tank (3) and the water pump (31) are both fixed to the top of the fixed plate (11). The water tank (3) and the water pump (31) are fixedly connected by a water pipe (33), and the surface of the water pipe (33) is also provided with a valve (32).