Packaging system for medical catheters

Abstract

The utility model provides a kind of packing system for medical catheter, and medical catheter includes first pipe fitting and catheter main body, the packing system includes second pipe fitting and fixed assembly, and the fixed assembly includes macromolecular tube, and one end of the first pipe fitting is the taper structure of gradually reducing outer diameter;The macromolecular tube includes first sleeve pipe, and the first sleeve pipe has taper hole inside, and the shape of the taper hole is matched with the shape of the taper structure of the first pipe fitting;The first pipe fitting is used to insert and be fixed in the first sleeve pipe.This system can make the first pipe fitting and macromolecular tube connection directly plug in, so that the bending or folding of first pipe fitting, second pipe fitting and catheter when extracting second pipe fitting can be avoided, to ensure the safety and reliability in the process of operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a packaging system for medical catheters. Background Technology

[0002] In existing technologies, when delivering intracranial stents within a patient's body, an intermediate catheter is typically required to establish a delivery pathway for the device, enabling it to reach the lesion site smoothly for treatment. Existing intermediate catheters mainly consist of three layers: the outer and inner layers are polymer layers, commonly made of materials such as pebax (block polyetheramide), nylon, or PTFE (polytetrafluoroethylene); the middle layer is a metal reinforcing layer, typically manufactured using braiding or spiral methods.

[0003] Clinically, intermediate catheters require thin walls and large lumen dimensions. While a large lumen dimension enhances catheter compatibility and facilitates the passage of larger instruments, it reduces the wall thickness. Since intermediate catheters are hollow, reduced wall thickness makes them more prone to bending, thus decreasing their kink resistance (the ability of a catheter to maintain its cross-sectional profile when subjected to radial forces).

[0004] During clinical use, the intermediate catheter frequently bends at its proximal end. This is due to the doctor's handling during the removal of the intermediate catheter (see [reference]). Figure 1 The conduit fixing seat 20 needs to be pulled out from the connector fixing clip 10. The surface of the conduit 30 is circular, and both the conduit 30 and the connector fixing clip 10 are smooth polymer tubes. Since the connector fixing clip 10 and the conduit 30 are only physically connected, the connector fixing clip 10 is prone to bending during the process of pulling out the conduit fixing seat 20. Similar to the stress on a curved surface, this can cause bending or kinking to occur at the stress diffusion tube, the flushing joint, or the proximal end of the conduit 30. Utility Model Content

[0005] The purpose of this invention is to provide a packaging system for medical catheters. This system allows for direct insertion and removal of the first tube and the polymer tube when they are connected, thus avoiding bending or kinking of the first tube, the second tube, and the catheter when the second tube is removed, ensuring safety and reliability during the surgical procedure.

[0006] To achieve the above objectives, this utility model provides a packaging system for a medical catheter. The medical catheter includes a first fitting and a catheter body. The packaging system includes a second fitting and a fixing component. The fixing component includes a polymer tube. The first fitting includes a tapered structure with a gradually decreasing outer diameter. The polymer tube includes a first sleeve with a tapered hole inside. The shape of the tapered hole matches the shape of the tapered structure of the first fitting. The first fitting is used to be inserted into and fixed inside the first sleeve.

[0007] Optionally, the first fitting is a stress-diffusing tube, and the inner wall of the tapered hole has internal threads. After the stress-diffusing tube is inserted into the tapered hole, it contacts the internal threads.

[0008] Optionally, the polymer tube further includes a second sleeve, which is connected to the end of the first sleeve away from the first tube.

[0009] Optionally, the polymer tube is a heat shrink tubing.

[0010] Optionally, the fixing assembly further includes a flushing connector, wherein the second sleeve is fitted onto and fixed to one end of the flushing connector.

[0011] Optionally, the flushing connector includes a main pipeline and a branch pipeline, the branch pipeline being fixed to the outer wall of the main pipeline and communicating with the main pipeline, and the second sleeve being fitted onto and fixed to one end of the main pipeline.

[0012] Optionally, the second sleeve is connected to the flushing connector by adhesive.

[0013] Optionally, the second fitting is a coil, which is connected to the end of the flushing connector away from the polymer tube, and the coil is used to house and fix the conduit body.

[0014] Optionally, the medical catheter also includes a catheter seat, which is fixed to the proximal end of the diffuser stress tube.

[0015] Optionally, the polymer tube is made of polyolefin, and the flushing connector is made of polypropylene.

[0016] This utility model provides a packaging system for medical catheters. The medical catheter includes a first fitting and a catheter body. The packaging system includes a second fitting and a fixing component. The fixing component includes a polymer tube. The first fitting includes a tapered structure with a gradually decreasing outer diameter. The polymer tube includes a first sleeve with a tapered hole inside. The shape of the tapered hole matches the shape of the tapered structure of the first fitting. The first fitting is used to be inserted into and fixed inside the first sleeve.

[0017] The system incorporates a polymer tube between the first and second tubes. This polymer tube has a variable diameter structure and contains a tapered hole that matches the shape of the first tube, enabling it to change diameter. This allows the first tube to be directly extracted under a certain external force after being encased in the polymer tube, making the operation more convenient. It also prevents bending of both the first and second tubes when extracting the second tube, ensuring safety and reliability during the procedure.

[0018] In addition, the internal thread inside the tapered hole of the polymer tube can improve the firmness of the connection between the stress diffusion tube and the polymer tube, making the connection more secure. This can effectively prevent the stress diffusion tube from detaching from the polymer tube, reduce the risk of the stress diffusion tube falling off during surgery, and ensure the smooth progress of the surgery. Attached Figure Description

[0019] Figure 1 This is a partial structural diagram of a packaging system in the prior art;

[0020] Figure 2 This is a schematic diagram of the packaging system in a preferred embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the first pipe fitting in a preferred embodiment of the present invention;

[0022] Figure 4 This is a partial structural diagram of the packaging system in a preferred embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the first sleeve in the polymer tube in another preferred embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the fixing component in a preferred embodiment of the present invention.

[0025] [The annotations in the attached figures are explained below]:

[0026] Connector fixing clip 10; conduit fixing seat 20; conduit 30;

[0027] Fixing component 1; polymer tube 11; first sleeve 111; tapered hole 112; second sleeve 113; flushing connector 12; main pipeline 121; branch pipeline 122; stress diffusion tube 2; conduit body 3; coil 4; conduit seat 5. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0029] In this description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this description, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” 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 this utility model and 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 this utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] As used in this specification, "distal end" generally refers to the end of the guide tube body furthest from the operator; the term "proximal end," as opposed to "distal end," generally refers to the end of the guide tube body closest to the operator; the term "axial" refers to the axial direction of the diffuser stress tube or polymer tube; the term "circumferential" refers to the circumferential direction of the diffuser stress tube or polymer tube; and the term "radial" refers to the diametrical direction of the cross-section of the diffuser stress tube or polymer tube.

[0033] In the following description, the polymer tube in the packaging system is used to connect the diffusion stress tube and the flushing joint as an illustration. However, those skilled in the art should know that the polymer tube in the packaging system can also be used in any situation where a tapered pipe needs to be connected.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments. Unless otherwise specified, the following embodiments and features can complement or combine with each other.

[0035] like Figures 2-6 As shown, a preferred embodiment of this utility model provides a packaging system for a medical catheter. The medical catheter includes a first fitting and a catheter body 3. The packaging system includes a second fitting and a fixing component 1. The fixing component 1 includes a polymer tube 11. The first fitting includes a tapered structure with a gradually decreasing outer diameter. The polymer tube 11 includes a first sleeve 111, and the first sleeve 111 has a tapered hole 112 inside. The shape of the tapered hole 112 matches the shape of the tapered structure of the first fitting. The first fitting is used to be inserted into and fixed inside the first sleeve 111.

[0036] This application provides a packaging system for medical catheters. The system includes a polymer tube 11 positioned between a first tube and a second tube. The polymer tube 11 has a variable diameter structure and contains a tapered hole 112 that matches the shape of the first tube, enabling the variable diameter function. This allows the first tube to be directly extracted under a certain external force after being wrapped by the polymer tube 11, making the operation more convenient and preventing bending of the first and second tubes when extracting the second tube, thus ensuring safety and reliability during the surgical procedure.

[0037] Reference Figures 2-5 As shown, in a preferred embodiment, the first tube is a stress-diffusing tube 2. The inner wall of the tapered hole 112 has internal threads. After the stress-diffusing tube 2 is inserted into the tapered hole 112, it contacts the internal threads. Providing internal threads within the tapered hole 112 of the polymer tube 11 improves the connection between the stress-diffusing tube 2 and the polymer tube 11, making the connection more secure. This effectively prevents the stress-diffusing tube 2 from detaching from the polymer tube 11, reducing the risk of the stress-diffusing tube 2 falling off during surgery and ensuring the smooth progress of the operation.

[0038] More specifically, existing diffuser stress tubes and flushing joints have a line contact, resulting in a small contact area and poor fixation reliability. This application designs an internal thread inside the tapered hole 112 of the polymer tube 11. The internal thread has a rotating tooth structure. After the diffuser stress tube 2 is inserted into the polymer tube 11, it can engage with the teeth of the internal thread. Due to the large tooth area of ​​the internal thread, the diffuser stress tube 2 can form a surface contact with the internal thread after being inserted into the tapered hole 112 of the polymer tube 11, making the fixation more reliable and greatly improving the ease of detachment of the diffuser stress tube 2. This ensures that the diffuser stress tube 2 is well assembled and less likely to fall off.

[0039] Meanwhile, when the diffused stress tube 2 is pushed into the polymer tube 11, the gap between the toothed structures also provides a buffer space for the pushing of the diffused stress tube 2, making the pushing easier and improving the convenience and reliability of the operation.

[0040] Furthermore, the polymer tube 11 also includes a second sleeve 113, which is connected to the end of the first sleeve 111 away from the first fitting and is axially connected to the first sleeve 111.

[0041] This application does not limit the connection method of the first sleeve 111 and the second sleeve 113. As a preferred example, the first sleeve 111 and the second sleeve 113 are integrally formed, in which case the first sleeve 111 and the second sleeve 113 are different sections of the same polymer tube 11. In actual manufacturing, it is only necessary to process internal threads in the part of the polymer tube 11 corresponding to the first sleeve 111.

[0042] Reference Figure 2 and Figure 6 As shown, the fixing assembly 1 also includes a flushing connector 12, and a second sleeve 113 is fitted onto and fixed to one end of the flushing connector 12. In a specific example, the second sleeve 113 is connected to the flushing connector 12 by adhesive.

[0043] Reference Figure 2 As shown, the second fitting is a coil 4 (packaging tube). The coil 4 is connected to the end of the flushing connector 12 away from the polymer tube 11. The coil 4 is used to store and fix the conduit body 3, that is, the conduit body 3 is stored in the coil 4, and the conduit body 3 is not connected to the flushing connector 12.

[0044] Generally, the outer diameter of coil 4 is about 5.7mm, the inner diameter of coil 4 is about 4.7mm, and the material of coil 4 is PE (polyethylene) or other suitable materials.

[0045] Reference Figure 2 and Figure 6 As shown, the flushing connector 12 includes a main pipe 121 and a branch pipe 122. The branch pipe 122 is fixed to the outer wall of the main pipe 121 and communicates with the main pipe 121. The second sleeve 113 is sleeved and fixed to one end of the main pipe 121. The branch pipe 122 and the main pipe 121 form a flushing connector 12 with a branching structure similar to a tree branch.

[0046] Furthermore, the flushing connector 12 (including the main pipe 221 and the branch pipe 222) is preferably made of polypropylene. The flushing connector 12 may also be made of polyvinyl chloride or other materials. This application does not limit the material of the flushing connector 12.

[0047] Generally, the outer diameter of the main pipe 121 of the flushing connector 12 is approximately 9 mm, and its length is approximately 18.2 mm. The outer diameter of the branch pipe 122 is approximately 6.8 mm, and its length is approximately 18.8 m. The polymer pipe 11 has an inner diameter of 8.5 mm, a wall thickness of 0.65 mm, and an outer diameter of 9.15 mm. It can be seen that the outer diameter of the polymer pipe 11 is slightly larger than that of the flushing connector 12. Furthermore, the smaller outer diameter of the diffusion stress pipe 2 is 3 mm, and the difference in outer diameter between the two ends of the diffusion stress pipe 2 is significant.

[0048] In a preferred embodiment, the polymer tube 11 can be configured as a heat-shrink tubing. Because the outer diameter of the stress-diffusing tube 2 is small, while the outer diameter of the flushing connector 12 is large, the inner diameters of the first sleeve 111 and the second sleeve 113 in the polymer tube 11 differ significantly. To meet the above requirements, it is preferable to configure the polymer tube 11 as a heat-shrink tubing.

[0049] During the preparation of the polymer tube 11, one end of the polymer tube 11 can be first fitted onto the flushing connector 12, and a pipe fitting with external threads can be inserted into the other end of the polymer tube 11. Then, the polymer tube 11 is heat-shrinked, and after heat-shrinking, the pipe fitting with external threads is unscrewed, thus obtaining the fixing assembly 1 with an internal thread at one end of the polymer tube 11 and the other end connected to the flushing connector 12.

[0050] Furthermore, the material of the polymer tube 11 is preferably polyolefin, because polyolefin has a large thermal shrinkage ratio, so that different inner diameters can be formed in the first sleeve 111 and the second sleeve 113 of the polymer tube 11. In addition, the polymer tube 11 can also be made of other materials such as polyvinyl chloride, and this application does not limit the material of the polymer tube 21.

[0051] Reference Figure 2 and Figure 4 As shown, the medical catheter also includes a catheter seat 5, which is fixed to the proximal end of the diffuser stress tube 2.

[0052] In actual clinical use, the operator needs to hold the catheter hub 5 and directly pull along the axis of the flushing connector 12 and the diffuser stress tube 2 to insert and remove the diffuser stress tube 2 from the polymer tube 11. At this time, the diffuser stress tube 2, the polymer tube 11 and the flushing connector 12 are only subjected to force in the axial direction, avoiding the bending operation of the diffuser stress tube 2, the polymer tube 11 and the flushing connector 12 in the existing technology. This greatly improves the bending phenomenon of the diffuser stress tube 2, the polymer tube 11, the flushing connector 12 and the coil 4, and makes it convenient for clinicians to remove.

[0053] In summary, this utility model provides a packaging system for medical catheters. The system has a polymer tube 11 between a first tube and a second tube. The polymer tube 11 has a variable diameter structure and a tapered hole 112 that matches the shape of the first tube, which enables the variable diameter function. This allows the first tube to be directly pulled out under a certain external force after the polymer tube 11 covers it, making the operation more convenient. It also prevents the first and second tubes from being bent when the second tube is pulled out, ensuring the safety and reliability of the surgical procedure.

[0054] In addition, the internal thread provided in the tapered hole 112 of the polymer tube 11 can improve the firmness of the connection between the stress diffusion tube 2 and the polymer tube 11, making the connection more reliable. This can effectively prevent the stress diffusion tube 2 from detaching from the polymer tube 11, reduce the risk of the stress diffusion tube 2 falling off during the operation, and ensure the smooth progress of the operation.

[0055] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present utility model.

Claims

1. A packaging system for a medical catheter, the medical catheter comprising a first fitting and a catheter body, characterized in that, The packaging system includes a second tubing and a fixing assembly. The fixing assembly includes a polymer tube. The first tubing includes a tapered structure with a gradually decreasing outer diameter. The polymer tube includes a first sleeve with a tapered hole inside. The shape of the tapered hole matches the shape of the tapered structure of the first tubing. The first tubing is used to be inserted into and fixed inside the first sleeve.

2. The packaging system for medical catheters as described in claim 1, characterized in that, The first pipe is a stress-diffusing pipe, and the inner wall of the tapered hole has internal threads. After the stress-diffusing pipe is inserted into the tapered hole, it comes into contact with the internal threads.

3. The packaging system for medical catheters as described in claim 1, characterized in that, The polymer tube also includes a second sleeve, which is connected to the end of the first sleeve that is away from the first tube.

4. The packaging system for medical catheters as described in claim 1, characterized in that, The polymer tube is configured as a heat shrink tubing.

5. The packaging system for medical catheters as described in claim 3, characterized in that, The fixing assembly also includes a flushing connector, and the second sleeve is fitted onto and fixed to one end of the flushing connector.

6. The packaging system for medical catheters as described in claim 5, characterized in that, The flushing connector includes a main pipe and a branch pipe. The branch pipe is fixed to the outer wall of the main pipe and communicates with the main pipe. The second sleeve is fitted onto and fixed to one end of the main pipe.

7. The packaging system for medical catheters as described in claim 5, characterized in that, The second sleeve is connected to the flushing connector by adhesive.

8. The packaging system for medical catheters as described in claim 5, characterized in that, The second fitting is a coil, which is connected to the end of the flushing connector away from the polymer tube. The coil is used to house and fix the conduit body.

9. The packaging system for medical catheters as claimed in claim 2, characterized in that, The medical catheter also includes a catheter seat, which is fixed to the proximal end of the diffuser stress tube.

10. The packaging system for medical catheters as claimed in claim 5, characterized in that, The polymer tube is made of polyolefin, and the flushing connector is made of polypropylene.

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