A catheter shaping device

Abstract

The utility model provides a kind of conduit plastic device including universal plastic tube, connecting piece and heating device;Wherein universal plastic tube contains conduit to be shaped, for from external constraint conduit to be shaped modality, heating device includes heating port, connecting piece is used to connect the heating port and universal plastic tube, the heat of heating port is transferred to universal plastic tube.The utility model improves the efficiency, stability and uniformity of conduit plastic.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a catheter shaping device. Background Technology

[0002] Catheter shaping is a key technique in interventional medical procedures, particularly in minimally invasive surgeries such as neurointerventions and cardiovascular interventions. For example, in aneurysm surgery, microcatheters are typically shaped according to the patient's vascular anatomy to facilitate insertion and fixation within the aneurysm cavity. Furthermore, the orientation of the distal end of the catheter allows control over the release position and direction of the coils, ensuring their even distribution within the aneurysm cavity. Additionally, catheter shaping prevents the microcatheter tip from pressing against the aneurysm wall, which could lead to aneurysm rupture.

[0003] Existing catheter shaping techniques typically involve steam shaping of the catheter in conjunction with a shaping device.

[0004] This method involves bending a shaping needle into the desired shape and inserting it into a conduit. The conduit with the needle inserted is then placed at the spout of a kettle, where the steam from boiling water softens it. Finally, the shaped section of the conduit is placed in cold water to set its shape. While the method is simple to operate overall, it has significant limitations:

[0005] Friction between the shaping needle and the inner wall of the catheter may cause catheter damage;

[0006] Uneven heat distribution of steam can lead to unstable catheter shaping or localized overheating that damages the catheter surface coating.

[0007] • Steam easily escapes, resulting in low molding efficiency, requiring extended heating time or repeated heating;

[0008] • Shaping needles rely on the material itself for shaping and fixation. Once bent, they are difficult to restore and cannot support multiple shape adjustments. They require high shaping skills from the surgeon and have a low margin for error.

[0009] • In order to be inserted into the catheter, the shaping needle is usually very thin in diameter, which makes shaping inconvenient and usually requires the use of tools. It is difficult to completely shape it into the ideal shape, such as excessive radius of curvature, insufficient smooth transition when there are multiple bends, and difficulty in shaping into a three-dimensional curved shape, resulting in less than ideal catheter shaping results. Utility Model Content

[0010] The purpose of this invention is to address the shortcomings of the prior art by providing a novel catheter shaping device that achieves uniform heat distribution during the catheter shaping process, thereby improving shaping efficiency, ensuring the stability of the shaping effect, and optimizing the operation process.

[0011] To achieve the above objectives, this utility model provides a conduit shaping device, characterized by comprising a universal shaping tube, a connector, and a heating device; wherein the universal shaping tube accommodates the conduit to be shaped and is used to constrain the shape of the conduit from the outside, the heating device includes a heating port, and the connector is used to connect the heating port and the universal shaping tube to transfer the heat from the heating port to the universal shaping tube.

[0012] The universal shaped tube can be a corrugated design, containing multiple crests and troughs. It can also be a bamboo-joint design, with each joint connected by a ball joint; that is, the ball head of one joint is nested within the ball seat of the preceding joint, and the ball seat of that joint can accommodate the ball head of the following joint. Alternatively, the universal shaped tube can be a combination of corrugated and bamboo-joint tubes.

[0013] The universal shaping tube also includes an intermediate conduit, which is placed inside the universal shaping tube and wraps around the outside of the conduit to be shaped. The universal shaping tube may also include at least one support for supporting the universal shaping tube or conduit during shaping.

[0014] The heating device can also be equipped with a water inlet, making it easy to add water to the device as needed. The heating device can use electric heating or chemical heating to heat the water to boiling to produce steam. The latter can be achieved by adding water to a heating pack containing a water-reactive substance. The former is more reliable, faster, and reusable, while the latter is more convenient and does not rely on a power source.

[0015] The heating device may have a perforated partition with a sandwich layer underneath, in which a heating pack is placed.

[0016] It should be noted that the water mentioned in this invention refers to water or aqueous solutions, suspensions, and other water-containing dispersions that produce water vapor after heating and boiling. It can be ordinary tap water, purified water, or more readily available solutions in operating rooms such as sodium chloride solution, glucose solution, and water for injection, all of which can achieve the purpose of the invention.

[0017] Preferably, the heating port is located at the top of the heating device and the opening faces upward or diagonally upward, so as to facilitate the discharge of hot air or water vapor.

[0018] The universal shaping tube has at least one conduit cavity inside, and the inner diameter of the conduit cavity is preferably 2-8F. In use, the part of the conduit to be shaped is placed into the conduit cavity for heating and shaping.

[0019] Optionally, the conduit shaping device also includes an intermediate conduit, which is placed inside the conduit lumen of the universal shaping tube. When in use, it wraps around the outside of the conduit to be shaped, preventing the conduit to be shaped from directly contacting the universal shaping tube and causing damage. At the same time, it can also obtain better airtightness or watertightness and reduce heat loss.

[0020] Preferably, the universal shaping tube, including the intermediate conduit therein, is made of transparent material, which facilitates observation of the position and shape of the conduit to be shaped, and further ensures the shaping effect.

[0021] In some implementations, the universal shaping tube is designed as a bamboo-joint tube, which is composed of multiple bamboo-joint components spliced ​​and interlocked. Each bamboo joint includes a ball head and a ball seat, and each bamboo joint is connected by a ball hinge. That is, the ball head of one bamboo joint is nested in the ball seat of the previous bamboo joint, and the ball seat of the bamboo joint can accommodate the ball head of the next bamboo joint. Furthermore, depending on the length of the part of the catheter to be shaped, the total length of the universal shaping tube can be adjusted by increasing or decreasing the number of bamboo joints, thereby adapting to more surgical scenarios.

[0022] In some implementations, the universal shaping tube is designed as a corrugated tube, which allows the universal shaping tube to not only turn but also have a certain ability to expand and contract and adjust its inner diameter, making it easy to adapt to different conduits.

[0023] Furthermore, the universal shaped tube includes a corrugated tube segment and a bamboo joint tube segment, and the corrugated tube segment and the bamboo joint tube segment can be connected together by means of bonding, welding, snap-fit ​​connection, nesting, threaded connection, etc.

[0024] Preferably, the corrugated tube section is used for shaping the farthest end of the catheter, while the bamboo joint tube section is positioned slightly further back. Under the same conditions, the corrugated tube design has a thinner wall thickness and a smaller turning radius, which can create more complex shapes and structures. Compared with the bamboo joint tube design, it is easier to bend into common shapes such as J-shape, C-shape, and pig tail at the end of the catheter.

[0025] In some embodiments, the universal shaping tube can be pre-shaped during product manufacturing, meaning the universal shaping tube is already bent into a specific shape. Thus, during operation, the user only needs to select the most suitable bending shape from a limited range of preset bending shapes, and then make fine adjustments according to specific requirements, further simplifying the operation process and optimizing the bending effect.

[0026] Furthermore, in some embodiments, during product manufacturing, the universal forming tube is not isotropic but is inherently produced to accommodate bending. Under certain specific usage conditions, such as when a particularly small turning radius or multiple consecutive bends are required, the typical material properties limit the technological implementation, making it impossible to achieve the desired shape by twisting a straight tube. Thus, by making special process adjustments during production to inherently produce a shape that accommodates a particularly small turning radius, this function can be achieved, allowing the tube to be formed within this universal forming tube to still be shaped into a form that is difficult to shape using conventional techniques.

[0027] In some embodiments, to prevent burns, the universal shaped tube body or a portion thereof may be fitted with an outer layer of heat-insulating material for easy gripping or clamping. Alternatively, a rigid section may be designed on the tube body for easy clamping with clips or pliers.

[0028] The connector includes a hollow cavity that guides the fluid, such as water vapor or hot air, from the heating port of the heating device into the conduit cavity of the universal plastic tube.

[0029] The connector can be directly fixed to the universal plastic tube by means of bonding, welding, riveting, etc., and can be detachably connected to the heating device during use. Alternatively, it can be directly fixed to the heating port of the heating device by means of bonding, welding, riveting, etc., and can be detachably connected to the universal plastic tube during use. It can also be used as an independent component, and can be connected to the universal plastic tube and the heating device respectively by means of threads, rubber plugs, clamps, etc., and the connection methods with the universal plastic tube and the heating device can be different.

[0030] To further simplify operation, the connector can be pre-assembled during product manufacturing, meaning it is already connected to the universal shaping tube and the heating device in the aforementioned manner. Thus, during operation, the user no longer needs to perform any connection steps; the product is ready to use immediately. Simply insert the catheter to be shaped into the universal shaping tube. In this case, the connector can also be connected directly to the universal shaping tube and the heating device in a non-removable manner. Furthermore, the connector can have multiple openings to connect multiple universal shaping tubes simultaneously, facilitating the simultaneous shaping of multiple catheters with a single heating device, thereby improving surgical efficiency and saving energy.

[0031] Furthermore, the connector can be disposed in the middle of the universal shaping tube, thereby enabling the simultaneous shaping of two conduits with one universal shaping tube, and also enabling the shaping of the middle section of the conduit.

[0032] In some embodiments, the heating device is a conical flask or other similar design equipped with an electric furnace, the design of which is smaller at the top and larger at the bottom so that the water vapor at the heating port is more concentrated;

[0033] In some embodiments, the heating device is a kettle with a long, narrow spout, the heating port being the long, narrow spout, the long shape of which facilitates connection with the connector; the kettle can be an electric kettle or a regular kettle used with an electric stove or induction cooker.

[0034] In some embodiments, the heating device is a portable self-heating design. Preferably, the bottom has a perforated partition with a sandwich structure. During use, a heating pack composed of quicklime or similar substances is added to the sandwich, followed by water to at least submerge the heating pack. The water reacts with the heating pack in the sandwich, releasing a large amount of heat to generate steam for steam shaping of the conduit. The sandwich structure may also have a pre-installed heating pack at the factory to simplify operation. The partition is preferably removable for easy replacement of the heating pack inside the sandwich structure. Furthermore, the self-heating kettle may also be used without a partition, directly inserting the heating pack. In these embodiments, the main body of the heating device is reusable; only the heating pack needs to be replaced each time it is used, making it convenient, quick, and inexpensive.

[0035] Furthermore, in addition to the heating port, the heating device may also be provided with a water inlet, which facilitates the injection of water into the heating device as needed to prevent the device from burning dry.

[0036] In some embodiments, the heating device is entirely disposable and undergoes sterilization and / or disinfection treatment during the product manufacturing process using ethylene oxide, electron beam, gamma rays, alcohol, etc., to avoid contaminating the surgical environment and catheters. The advantages of this type of embodiment are convenience and safety, making it particularly suitable for surgical procedures with high aseptic requirements.

[0037] In some embodiments, the heating device is fully reusable. The advantage of this type of embodiment is its low cost, with no or almost no consumable costs.

[0038] In some embodiments, the catheter shaping device may also include a support, which can be used to place a universal shaping tube or catheter during shaping to facilitate the operator's operation.

[0039] Compared with the prior art, the catheter shaping device of this application has the following advantages:

[0040] The universal shaping tube of the catheter shaping device of this application is flexible and reversible, and can meet the catheter shaping needs corresponding to various anatomical morphologies. In addition, by introducing water vapor or hot air into the catheter lumen of the universal shaping tube, the catheter can be heated from the inside, ensuring that the heat is more concentrated and uniform and will not easily dissipate into the surrounding environment, which can significantly improve the shaping efficiency and effect. Furthermore, the design of wrapping the catheter to be shaped inside the universal tube can also make the shaping operation more convenient.

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0042] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the catheter shaping device of this utility model;

[0044] Figures 2(a)-(b) are schematic diagrams showing the combination of the universal shaping tube, the guide tube to be shaped, and the heating device of this utility model;

[0045] Figure 3 This is a schematic diagram of the corrugated pipe implementation method of the universal shaped tube of this utility model;

[0046] Figures 4(a)-(e) are schematic diagrams of the bamboo joint tube implementation method of the universal shaping tube of this utility model;

[0047] Figure 5 This is a schematic diagram of the splicing method of the universal shaped corrugated pipe and bamboo joint pipe of this utility model;

[0048] Figures 6(a)-(b) are schematic diagrams of embodiments of the connector of this utility model;

[0049] Figure 7 This is a schematic diagram of the heating device of this utility model using a partition and a heating pack for heating;

[0050] Figure 8 This is a schematic diagram of the support used in the catheter shaping device of this utility model. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] To make the technical problem to be solved by this utility model, the proposed technical solution, and its beneficial effects clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. The scope of protection of the present utility model is not limited by the specific embodiments.

[0053] It should be noted that when a component is described as "fixed", "installed", "placed", "set up", "connected", "loaded", or "assembled" onto another component, the component may be directly or indirectly connected to the other component.

[0054] It should be understood that terms such as "front," "back," "up," "down," "left," "right," "far," "near," "top," "bottom," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are descriptions based on the accompanying drawings or industry conventions, and are only for the purpose of explaining this utility model and simplifying the description. They do not mean that the device or component referred to must have a specific orientation in the specification or be constructed and operated in a specific orientation or position, and therefore should not be construed as a limitation on this utility model.

[0055] The present invention will now be further described in conjunction with the accompanying drawings and embodiments, wherein the same reference numerals denote the same or similar elements.

[0056] Please refer to Figure 1 This utility model provides a conduit shaping device, including a universal shaping tube 1, a connector 2, and a heating device 3. The universal shaping tube 1 is a hollow structure containing at least one conduit cavity 11. The universal shaping tube 1 can be configured into various shapes to constrain and shape the conduit cavity into its inner wall shape after expansion. In some embodiments, the universal shaping tube can be a mold with minimal or no heat deformation. As shown in Figure 2(a), the heating device 3 includes a heating port 31 for discharging hot air or water vapor from inside the heating device; the connector 2 connects the universal shaping tube 1 and the heating port 31 of the heating device 3, so that as much of the hot air or water vapor from the heating port 31 as possible is introduced into the conduit cavity 11 of the universal shaping tube 1. Figure 1 In the illustrated embodiment, referring to Figure 2(b), the universal shaping tube 1 further includes an intermediate conduit 12. The intermediate conduit 12 is placed inside the conduit cavity 11 and wraps around the outside of the conduit 4 to be shaped, preventing the conduit to be shaped from directly contacting the irregular inner wall of the universal shaping tube and causing wear or creases. In addition, the heating device 3 may also be provided with a water inlet 32 ​​to facilitate the injection of water into the heating device as needed, preventing the device from burning dry.

[0057] Next, we will combine Figure 1Figures 2(a) and 2(b) further illustrate the use of the conduit shaping device of this utility model. For ease of explanation, the opening connecting the universal shaping tube 1 to the heating port 31 is defined as the heating end 1a, while the opening away from the heating device is defined as the conduit end 1b of the universal shaping tube. When using the conduit shaping device, the conduit 4 to be shaped needs to be inserted from the conduit end 1b of the universal shaping tube to near the heating end 1a. Therefore, when shaping the universal shaping tube, the portion near the heating end 1a needs to be bent into the target conduit head shape; see reference. Figure 1 , Figure 3 In the embodiment of Figure 2(a), if the tip of the catheter 4 to be shaped only needs to be shaped... Figure 3 As shown in the diagram, with the heating end 1a facing the body of the universal plastic tube, there is not enough space for connection. Therefore, the heating end 1a of the universal plastic tube needs to be... Figure 1 The tube is bent again in another direction to facilitate connection to the heating port 31 at the connection end of the connector 2, while the tube to be shaped 4 only needs to be inserted to the position shown in Figure 2(a). It should be noted that this utility model does not limit the shaping shape of the distal end of the tube or the length of the tube entering the universal shaping tube 1. The above description and illustrations are just examples for the purpose of understanding.

[0058] In a preferred embodiment of this utility model, the universal shaping tube 1 itself and the intermediate conduit 12 inside are both transparent tubes, which facilitates observation of the shape of the conduit 4 to be shaped and the length of the conduit entering the universal shaping tube 1.

[0059] Next reference Figure 3 The implementation method of the universal shaping tube 1 will be described.

[0060] like Figure 3 As shown, the universal shaping tube 1 can be a corrugated tube design, containing multiple crests and troughs. The cross-sections of the crests and troughs can be perpendicular to the axis of the universal shaping tube 1 or at a certain angle to the axis, i.e., the corrugations are spiral in shape. It can be made by wrapping spring coils with rubber and / or winding them on the tube. In the corrugated design, the universal shaping tube 1 can be made of materials with good plasticity such as copper and steel, which is convenient to maintain the expected shaping shape. The design of crests and troughs avoids the local deformation of the shaping tube from being too large and breaking.

[0061] As shown in Figures 4(a) to 4(e), the universal shaping tube 1 can be a bamboo-joint design. Figure 4(a) is a schematic diagram of a single bamboo joint 101, which includes a ball head 1011 and a ball seat 1012. When spliced, as shown in Figure 4(b), each bamboo joint 101 is connected by a ball joint, that is, the ball head of one bamboo joint is nested in the ball seat of the previous bamboo joint, and the ball seat of the bamboo joint can accommodate the ball head of the next bamboo joint. Furthermore, as shown in Figures 4(b) and 4(c), the total length of the universal shaping tube 1 can be adjusted by increasing or decreasing the number of bamboo joints 101 according to the length of the part of the catheter to be shaped, thereby adapting to more surgical scenarios and providing greater flexibility. Figures 4(d) and 4(e) show different shaping effects of this scheme. In the bamboo-joint design, the ball joint connection between any two ball heads 101 needs to have a large frictional force, which can be achieved through interference design and / or increasing the roughness of the contact surface to maintain the shape of the universal shaping tube.

[0062] Figure 5 The universal shaping tube shown is a combination of a corrugated tube and a bamboo tube. In a preferred embodiment, the corrugated tube is used to shape the farthest end of the tube to be shaped, which is smaller in turning radius, making it easier to obtain tube end shapes such as J-shape, C-shape, and pig tail shape with smaller curvature. The bamboo tube is located at the tube end 1b of the universal shaping tube and is used to adjust the length of the universal shaping tube 1 and / or to achieve some simpler tube shaping.

[0063] In the above-described embodiments of the universal shaped tube, the entire tube body or a part thereof can be covered with heat insulation material to facilitate gripping and prevent burns.

[0064] The connector 2 will now be described with reference to Figures 6(a) and 6(b). As shown in Figure 6(a), the connector 2 includes a hollow cavity 21, which guides the fluid, such as steam or hot air, from the heating port 31 of the heating device 3 into the conduit cavity 11 of the universal plastic tube. The connector 3 can be directly fixed to the universal plastic tube by means of bonding, welding, riveting, etc., and can be detachably connected to the heating device during use. Alternatively, it can be directly fixed to the heating port of the heating device by means of bonding, welding, riveting, etc., and can be detachably connected to the universal plastic tube during use. It can also be used as an independent component, and can be detachably connected to the universal plastic tube and the heating device by means of threads, rubber plugs, clamps, etc., and the connection methods with the universal plastic tube and the heating device can be different. Figures 6(a) and 6(b) are schematic diagrams of connector 2 used as an independent component. In Figure 6(a), connector 2 is connected to the heating port 31 of the heating device 3 via threads and to the universal plastic tube 1 via a rubber plug. In Figure 6(b), the connector is a clamp design that secures the universal plastic tube that is fitted over the heating port. It should be noted that Figures 6(a) and 6(b) are intended to illustrate that there can be various and different ways in which connector 2 can be connected to the universal plastic tube and the heating device, but this utility model is not limited to the design of connector 2 shown in Figures 6(a) and 6(b).

[0065] The heating device 3 of this utility model can be in the shape of a common kettle, or it can be... Figure 1 The conical flask shown has a shape that is smaller at the top and larger at the bottom, which makes the heat more concentrated at the heating port 31. When in use, the heating device can be used with heat sources such as induction cookers and electric stoves, just like common kettles and conical flasks, or it can be a self-heating design.

[0066] The self-heating heating device 3 could be an electric heating design, but this solution has the disadvantage of requiring charging or plugging in, which would occupy the operating room's access points, and the power cord might pose a safety hazard. Therefore... Figure 7 A heating device 3 designed to achieve self-heating via a heating pack 35 is also proposed. Figure 7 In the illustrated embodiment, the heating device 3 has a perforated partition 33, below which is a sandwich layer 34. A heating pack 35 is placed inside the sandwich layer 34. The heating pack 35 may contain substances that release heat upon contact with water, such as quicklime. In use, water is simply added to the heating device 3 until it at least covers the heating pack 35, causing the water to boil and generate steam. Alternatively, the heating device 3 may be used without the partition 33 and sandwich layer 34, allowing direct insertion of the heating pack 35. The heating pack 35 may be pre-installed in the heating device 3 or packaged separately as a consumable.

[0067] Furthermore, such as Figure 8As shown, the catheter shaping device may also include at least one support 5 for supporting the universal shaping tube or catheter during shaping, avoiding the operator from manually holding or holding the universal shaping tube or catheter, thus simplifying the shaping operation.

[0068] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A catheter shaping device, characterized by It includes a universal shaping tube, a connector, and a heating device; wherein the universal shaping tube accommodates the conduit to be shaped and is used to constrain the shape of the conduit from the outside; the heating device includes a heating port; and the connector is used to connect the heating port and the universal shaping tube to transfer the heat from the heating port to the universal shaping tube.

2. The catheter-shaping device of claim 1, wherein The universal shaped tube is a corrugated design, containing multiple crests and troughs.

3. The catheter-shaping device of claim 1, wherein The universal shaped tube is designed as a bamboo joint tube, with each bamboo joint connected by a ball joint. That is, the ball head of one bamboo joint is nested in the ball seat of the previous bamboo joint, and the ball seat of the bamboo joint can accommodate the ball head of the next bamboo joint.

4. The catheter shaping device of claim 1, wherein The universal shaped tube is a combination of a corrugated tube and a bamboo-joint tube.

5. The catheter-shaping device of claim 1, wherein The universal shaping tube also includes an intermediate conduit, which is placed inside the universal shaping tube and wrapped around the outside of the conduit to be shaped.

6. The catheter shaping device as described in claim 1, characterized in that... The heating device is also equipped with a water inlet, which facilitates the filling of water into the heating device as needed.

7. The catheter shaping device as described in claim 1, characterized in that... The universal shaping tube also includes at least one support for supporting the universal shaping tube or conduit during shaping.

8. The catheter shaping device as described in claim 1, characterized in that... The heating device is equipped with a perforated partition, and below the partition is a sandwich layer containing a heating pack. The heating pack contains a substance that releases heat when it comes into contact with water. When in use, water only needs to be added to the heating device to make the water boil and generate steam.

Images