Catheter stereotaxis device and method of stereotaxis

Abstract

The application discloses a kind of conduit stereoscopic shaping device and its shaping method, by being arranged in the axial through heating groove, cooling groove and being located in the heart of molding groove on the two end surfaces of stereoscopic plastic device main body, and cooling groove is located in the radial outer side of heating groove, both are spaced apart with multiple along the circumference, condenser or air pipe is installed in cooling groove;Several screw holes for loading adjusting rod are opened on the side wall of stereoscopic plastic device main body, and screw hole passes through heating groove, cooling groove and reaches molding groove and is arranged with multiple layers along the axial direction on the side wall, and each layer screw hole is spaced apart with multiple along the circumference and is equipped with adjusting rod one by one, and adjusting rod is symmetrically distributed in pairs on the side wall, can be adjusted in real time to the molding angle of conduit in molding process, solve the problem that existing conduit molding mold cannot be adjusted again once determined and existing technology can only be plane shaped, so that conduit can be more matched with human body cavity, more easily make conduit reach surgical area quickly.

Description

Technical Field

[0001] This invention belongs to the field of catheter technology, and specifically relates to a catheter three-dimensional shaping device and its shaping method. Background Technology

[0002] A medical catheter is a long, hollow, and flexible tubular medical device specifically designed to enter body cavities, blood vessels, or tissues to perform medical procedures such as diagnosis, treatment, monitoring, or drainage. It is one of the most widely used devices in modern medicine, applied across multiple fields including internal medicine, surgery, intensive care, and interventional radiology.

[0003] A catheter is a long, hollow, flexible tubular instrument whose core function is to create a channel in the human body or industrial systems to achieve fluid transport, material drainage, instrument delivery, or diagnostic and therapeutic procedures.

[0004] Catheter shaping is the process of bending a straight or standard-shaped catheter (especially its distal portion) into a specific angle or complex three-dimensional structure according to clinical needs.

[0005] A catheter shaping mandrel is a long, thin metal needle-like tool used to precisely control the bending angle, radius, and shape during the heating and shaping of a catheter.

[0006] During surgery, catheters typically pass through bifurcation points in the surgical cavity. To facilitate better entry into these branching points, the catheter tip usually needs to be shaped. Current shaping methods involve creating a mold using laser engraving or machining, placing the catheter into a groove in the mold, and then heating and cooling it to set the shape. Once the mold is set, the shape cannot be adjusted. For thinner catheters such as microcatheters, a shaping needle is usually inserted internally. The catheter is manually shaped according to the surgeon's understanding of the cavity, and then the polymer material tip is heated and deformed using steam fumigation. After natural cooling, the shaping needle is removed, thus achieving the desired shaping effect. However, due to differences in surgeon experience and surgical understanding, the shaping results vary. Furthermore, since the heat source is water vapor, its heating temperature is limited. After the shaping needle is removed, the microcatheter inevitably springs back, causing shaping deviations. Additionally, the insertion of the shaping needle into the microcatheter may damage the inner wall of the catheter.

[0007] Existing catheter molding methods mostly use pre-grooved molds, shaping the catheter through heating and cooling. However, once the grooves are etched, the catheter shape cannot be modified. Adjusting the catheter shape requires creating a new mold, which is time-consuming and resource-intensive. Furthermore, current catheter molding methods are mostly planar, while due to the complexity of human cavities, three-dimensional molding is sometimes necessary for better insertion, which current methods cannot achieve. In addition, current molding methods separate heating and cooling equipment. The mold must be heated in the heating equipment first, and then removed and cooled in the cooling equipment after heating, requiring multiple steps and occupying a large space.

[0008] Utility model announcement CN213642734U discloses a conduit bending and shaping device. Key technical features include a support plate and a support groove on the support plate. A shaping device for shaping the conduit is fixed inside the support groove. The shaping device includes several first forming plates fixed inside the support groove, which are slidably connected. One end of each first forming plate is fixed with a first multi-section electric telescopic rod, and one end of the first multi-section electric telescopic rod is fixed inside the support groove. Several second multi-section electric telescopic rods are fixed to the inner wall of the support groove away from the first multi-section electric telescopic rod. The second multi-section electric telescopic rod has a second forming plate fixed at its output end, and several second forming plates correspond to several first forming plates. The outer sides of the first and second forming plates are provided with connectors that can be connected to one end of the conduit, and the connectors are slidably connected to the inside of the support groove to form the cavity required for conduit shaping. This conduit bending shaping device shapes the conduit through a shaping device. However, the shaping device does not have a heating or cooling device inside, and the structure occupies a large area and the electric telescopic control structure is complicated. Furthermore, it is not suitable for planar shaping and cannot achieve three-dimensional shaping of the conduit.

[0009] The invention disclosed in CN109452972B, a method, apparatus, and device for simulating the shape of a catheter shaper, mainly involves determining a preset route within the lumen of a simulated blood vessel segment based on the vessel's extension direction, simulating the catheter's travel route within the segment, correcting the route based on the predetermined preset route, and determining the shape of the catheter shaper based on the corrected route. The catheter's travel route is obtained through simulation and correction. This route characterizes the actual travel route of the catheter within the blood vessel and reflects its approximate shape when placed in the lumen. The corrected route has a high degree of conformity to the blood vessel shape, primarily because the catheter obtained by the shaper maintains consistency with the blood vessel's morphology in three-dimensional space. The catheter can bend in accordance with the blood vessel's shape as it travels within the vessel. The device structure for catheter shaping is not extensively described.

[0010] To address the existing problems mentioned above, it is necessary to develop a new catheter shaping device and its shaping method to improve operability and space requirements. Summary of the Invention

[0011] The purpose of this invention is to address the shortcomings of the prior art by providing a three-dimensional catheter shaping device and method, which solves the problem that the prior art can only perform planar shaping and allows for real-time adjustment of the catheter's shaping angle during the shaping process.

[0012] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0013] A three-dimensional shaping device for a conduit includes a three-dimensional shaping device body, and heating grooves and cooling grooves arranged axially through the two end faces of the three-dimensional shaping device body, and shaping grooves located in the center, and cooling grooves are located radially outside the heating grooves. Multiple heating grooves are spaced apart from each other along the circumference, and a condenser or a blower is installed in the cooling groove.

[0014] The main body of the three-dimensional molding device has several screw holes on its side wall for loading adjustment rods. The screw holes pass through the side wall between the heating tank and the cooling tank and reach the molding tank directly. Multiple layers of screw holes are arranged axially on the side wall. Each layer of screw holes is spaced out in the circumferential direction and is equipped with an adjustment rod. The adjustment rods are symmetrically distributed in pairs on the side wall.

[0015] The molding tank is also equipped with a temperature sensor with an external temperature display device, and the temperature sensor is controlled and connected to the heating device installed in the heating tank.

[0016] The screw holes and adjusting rods are added or removed according to the molding length of the guide tube.

[0017] The heating device uses an electromagnetic coil, a heating tube, or hot air to heat the conduit.

[0018] The main body of the three-dimensional molding device is made of a metal material with high thermal conductivity.

[0019] The grooves on the side walls and two end faces of the main body of the three-dimensional molding device are processed by laser engraving, machining or additive manufacturing.

[0020] The adjusting rod is threaded into the screw hole.

[0021] A method for shaping a three-dimensional catheter shaping device includes the following steps:

[0022] (1) Wiping and cleaning

[0023] Wipe the tubing and molding device with alcohol;

[0024] (2) Insert the catheter

[0025] Place the tubing into the molding tank;

[0026] (3) Adjusting the shape of the catheter

[0027] Adjusting the adjusting rod passing through the screw hole allows for shape adjustment of the guide tube tip, and adjusting the length of each pair of adjusting rods can adjust the curvature of the guide tube bend;

[0028] (4) Start heating

[0029] After the conduit is adjusted to the appropriate angle, the heating device is activated to heat the conduit.

[0030] (5) Temperature adjustment

[0031] The temperature during the heating process is adjusted using a heating device based on the temperature display device of a temperature sensor.

[0032] (6) Cooling

[0033] After heating is complete, turn off the heating device and start the condenser or air blower in the cooling tank for cooling.

[0034] (7) Take the catheter

[0035] After cooling, pull the adjusting rod outward, remove the guide tube, and the molding is complete.

[0036] In step (1), non-woven fabric soaked in alcohol is used to wipe and clean the conduit and molding device.

[0037] The beneficial effects of this invention are:

[0038] (1) This invention discloses a three-dimensional shaping device for catheters and its shaping method. The device has a heating groove, a cooling groove and a shaping groove located in the center, which are axially arranged on both ends of the main body of the three-dimensional shaping device. The cooling groove is located on the radial outer side of the heating groove. Multiple cooling grooves are spaced apart in the circumferential direction. A condenser or a blower is installed in the cooling groove. Several screw holes for loading adjustment rods are opened on the side wall of the main body of the three-dimensional shaping device. The screw holes pass through the side wall between the heating groove and the cooling groove and reach the shaping groove. Multiple screw holes are arranged in the axial direction on the side wall. Each layer of screw holes is spaced apart in the circumferential direction and equipped with adjustment rods. The adjustment rods are symmetrically distributed in pairs on the side wall. The shaping angle of the catheter can be adjusted in real time during the shaping process. This solves the problem that the existing catheter shaping mold cannot be adjusted again once it is determined and the mold can only be reopened. This saves energy and money and solves the problem that the existing technology can only perform planar shaping. This makes the catheter more compatible with human cavities and makes it easier for the catheter to reach the surgical area quickly.

[0039] (2) A temperature sensor is installed inside the molding mold to provide real-time feedback on the temperature during molding and adjust it in real time according to the temperature measurement results to avoid irregular deformation of the guide tube due to excessive temperature or insufficient temperature to achieve the ideal molding effect.

[0040] (3) It integrates plastic molds, heating systems, cooling systems, etc., which can integrate the original independent and scattered plastic molds, heating equipment and cooling equipment together, simplifying the operation steps and reducing the labor burden of operators and the space occupied by the equipment.

[0041] (4) It solves the problem of using special molds for different specifications of products in the existing molding method. Pipes with similar dimensions can be molded by this device, which has good economic benefits. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the present invention;

[0043] Figure 2 This is the front view of the present invention;

[0044] Figure 3 This is a side view of the present invention;

[0045] Figure 4 yes Figure 3 A sectional view;

[0046] Figure 5 This is a schematic diagram of the main structure of the three-dimensional molding device. Detailed Implementation

[0047] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] This invention provides a catheter three-dimensional shaping device and its shaping method, such as Figures 1 to 5 As shown.

[0050] A three-dimensional shaping device for a conduit includes a three-dimensional shaping device body 1. Heating grooves 4 and cooling grooves 3 are axially arranged through both ends of the three-dimensional shaping device body 1, and a shaping groove 5 is located in the center. The cooling grooves 3 are located radially outside the heating grooves 4, and multiple cooling grooves 4 and 5 are spaced apart circumferentially. A condenser or a blower is installed in the cooling groove 3. Several screw holes 6 for mounting adjusting rods are opened on the sidewall of the three-dimensional shaping device body 1. The screw holes 6 pass through the sidewall between the heating grooves 4 and the cooling grooves 3 and reach the shaping groove 5. Multiple screw holes 6 are arranged axially on the sidewall, and multiple adjusting rods 2 are provided in each layer of the screw holes 6 spaced apart circumferentially. The adjusting rods 2 are symmetrically distributed in pairs on the sidewall.

[0051] The molding tank 5 is also equipped with a temperature sensor connected to an external temperature display device. This temperature sensor is controlled and connected to a heating device located in the heating tank 4, allowing for real-time temperature adjustment to prevent irregular deformation of the conduit due to excessively high temperatures during molding, and to ensure optimal molding results when temperatures are too low. The heating device can utilize electromagnetic coils, heating tubes, hot air, or other heat sources to heat the conduit. The main body of the three-dimensional molding device is made of a metal with high thermal conductivity, such as copper or aluminum, to ensure excellent heat transfer.

[0052] The screw hole 6 and adjusting rod 2 are added or removed according to the molding length of the guide tube; the size of the molding groove 5 can also be determined according to the size of the molded guide tube and the three-dimensional molding shape. The number of cooling grooves 3 and heating grooves 4 can be increased or decreased according to the size and material of the guide tube. When the size of the guide tube is large and the melting point of the material is high, they can be increased, and vice versa. The power of cooling grooves 3 and heating grooves 4 can be increased or decreased according to the size and material of the guide tube. When the size of the guide tube is large and the melting point of the material is high, they can be increased, and vice versa.

[0053] During processing, the grooves on the side walls and end faces of the main body of the three-dimensional molding device can be processed by laser engraving, machining or additive manufacturing.

[0054] During the molding process, first wipe the tubing and molding device with a non-woven cloth soaked in alcohol to prevent impurities from contaminating the tubing. Place the tubing into the molding tank and adjust the shape of the tubing head using the adjusting rods. Adjusting the length of each pair of adjusting rods can adjust the curvature of the tubing. After the adjusting rods are in the correct position, fix them to the main body of the three-dimensional molding device using threaded engagement. For easy observation, the main body of the three-dimensional molding device can also be made of high-temperature resistant transparent quartz glass. When the tubing is adjusted to the appropriate angle, start the heating device. After heating is complete, start the cooling device. After cooling is complete, pull the adjusting rods outward, remove the tubing, and the molding is complete.

[0055] The specific steps of this catheter three-dimensional shaping device are as follows:

[0056] Step 1: Wipe and clean

[0057] First, wipe the tubing and molding device with a non-woven cloth soaked in alcohol to prevent impurities from contaminating the tubing.

[0058] Step 2: Insert the catheter

[0059] Place the tubing into the molding tank.

[0060] Step 3: Adjust the shape of the catheter

[0061] The shape of the catheter tip can be adjusted by adjusting the length of each pair of adjusting rods, which can adjust the curvature of the catheter bend.

[0062] Step 4: Start heating

[0063] Once the conduit is adjusted to the appropriate angle, the heating device is activated to begin heating.

[0064] Step 5: Temperature Adjustment

[0065] Adjust the temperature during the heating process according to the temperature display device of the temperature sensor to avoid excessively high or low temperatures affecting the molding effect.

[0066] Step 6: Cooling

[0067] After heating is complete, start the cooling process.

[0068] Step 7: Retrieve the catheter

[0069] After cooling, pull the adjusting rod outward, remove the guide tube, and the molding is complete.

[0070] This invention discloses a three-dimensional shaping device and method for a conduit. The device comprises a heating groove, a cooling groove, and a shaping groove located at the center, axially arranged through both end faces of the main body. The cooling groove is located radially outside the heating groove, and multiple heating grooves are spaced apart circumferentially. A condenser or air blower is installed in the cooling groove. The sidewall of the main body has several screw holes for mounting adjusting rods. These screw holes pass through the sidewall between the heating and cooling grooves and reach the shaping groove, arranged in multiple layers axially on the sidewall. Each layer of screw holes has multiple holes spaced apart circumferentially and is equipped with an adjusting rod. The tubes are symmetrically distributed in pairs on the wall, allowing for real-time adjustment of the tube's shaping angle during the molding process. This solves the problem that existing tube molding molds cannot be adjusted once finalized, requiring the mold to be remade, thus saving time and resources. It also addresses the limitation of existing technologies that can only perform planar shaping, enabling the tube to better match human cavities and allowing it to reach the surgical area more quickly. Furthermore, it integrates the molding mold, heating system, and cooling system, simplifying the operation process and reducing the workload of operators and the space required for the equipment.

[0071] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

[0074] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A three-dimensional shaping device for catheters, characterized in that: It includes a three-dimensional molding device body, and heating grooves and cooling grooves arranged axially through the two end faces of the three-dimensional molding device body, as well as molding grooves located in the center. The cooling grooves are located radially outside the heating grooves, and multiple of them are spaced apart along the circumference. A condenser or air blowing pipe is installed in the cooling groove. The main body of the three-dimensional molding device has several screw holes on its side wall for loading adjustment rods. The screw holes pass through the side wall between the heating tank and the cooling tank and reach the molding tank directly. Multiple layers of screw holes are arranged axially on the side wall. Each layer of screw holes is spaced out in the circumferential direction and is equipped with an adjustment rod. The adjustment rods are symmetrically distributed in pairs on the side wall. The molding tank is also equipped with a temperature sensor with an external temperature display device, and the temperature sensor is controlled and connected to the heating device installed in the heating tank.

2. The catheter three-dimensional shaping device according to claim 1, characterized in that: The screw holes and adjusting rods are added or removed according to the molding length of the guide tube.

3. The catheter three-dimensional shaping device according to claim 1, characterized in that: The heating device uses an electromagnetic coil, a heating tube, or hot air to heat the conduit.

4. The catheter three-dimensional shaping device according to claim 1, characterized in that: The main body of the three-dimensional molding device is made of a metal material with high thermal conductivity.

5. A catheter three-dimensional shaping device according to claim 1, characterized in that: The grooves on the side walls and end faces of the main body of the three-dimensional molding device are processed by laser engraving, machining or additive manufacturing.

6. The catheter three-dimensional shaping device according to claim 1, characterized in that: The adjusting rod is threaded into the screw hole.

7. A shaping method for a catheter three-dimensional shaping device according to any one of claims 1 to 6, characterized in that, Includes the following steps: (1) Wiping and cleaning Wipe the tubing and molding device with alcohol; (2) Insert the catheter Place the tubing into the molding tank; (3) Adjusting the shape of the catheter Adjusting the adjusting rod passing through the screw hole adjusts the shape of the guide tube tip, and adjusting the length of each pair of adjusting rods adjusts the curvature of the guide tube bend; (4) Start heating After the conduit is adjusted to the appropriate angle, the heating device is activated to heat the conduit. (5) Temperature adjustment The temperature during the heating process is adjusted using the heating device based on the temperature display device of the temperature sensor. (6) Cooling After heating is complete, turn off the heating device and start the condenser or blower in the cooling tank for cooling. (7) Take the catheter After cooling, pull the adjusting rod outward, remove the guide tube, and the molding is complete.

8. The shaping method of a catheter three-dimensional shaping device according to claim 6, characterized in that: In step (1), non-woven fabric soaked in alcohol is used to wipe and clean the conduit and molding device.

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