Fallopian tube catheter kit

Abstract

The utility model relates to the technical field of fallopian tube dredging devices, in particular to a fallopian tube catheter suite, a guide tube comprises a first tube body and a first connector which are communicated, the first tube body can be inserted into an outer sleeve, and an inner catheter can be inserted into the first tube body from a side connector; the fallopian tube suite can be switched to a first working state when the guide tube is located in the outer sleeve; on the basis of the first working state, when the inner guide pipe is located in the guide pipe, the inner guide pipe can be switched to the second working state; on the basis of the second working state, the guide wire can be switched to the third working state when the guide wire is located in the inner catheter; the fallopian tube catheter suite has the advantages that the fallopian tube catheter suite provides a hardware basis for a series of operations such as fallopian tube radiography, sterilization, dredging, suction and lavage, the functions can be achieved through one suite, and the surgical operation process is greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of fallopian tube dredging devices, in particular to a fallopian tube catheter kit. Background Art

[0002] In recent years, the incidence of female infertility has shown an increasing trend. Among them, fallopian tube causes account for 25% - 40%, usually due to fallopian tube adhesion, obstruction and other reasons, also known as fallopian tube infertility, mainly manifested as the loss of the three major functions of the fallopian tube lumen, such as peristaltic ability, egg pickup and transportation of fertilized eggs to the uterine cavity. At present, in the treatment of infertility caused by fallopian tube factors, hysterosalpingography (HSG) and selective salpingography (SSG) are widely used clinically. Compared with HSG, SSG can more clearly and accurately display the details of obstruction, providing guidance for further treatment. Usually, SSG is carried out simultaneously with fallopian tube recanalization (FTR). SSG and FTR are also a minimally invasive technique for diagnosing and treating fallopian tube obstruction emerging in recent years.

[0003] Inflammatory debris, thick mucus and fine fibrils in the fallopian tube can all cause fallopian tube occlusion. Due to the small cross-sectional area of the fallopian tube, the hydrostatic pressure applied to the uterine cavity is weak when conducted to the interstitial part, making it difficult to dredge the fallopian tube. In SSG, the contrast catheter is inserted into the opening of the fallopian tube and contrast agent is injected, which can have a mechanical flushing effect on the adhesion of the fallopian tube and has a certain dredging effect on the less severely occluded part of the fallopian tube. When using a fine guide wire to dredge the fallopian tube, although ideal curative effects can be obtained in fallopian tube recanalization, the occurrence of postoperative re-adhesion affects the surgical effect.

[0004] Ozone (O3), also known as superoxide, is an allotrope of oxygen (O2). At room temperature, it is a pale blue gas with a special odor. It has strong oxidizing properties second only to fluorine, twice that of chlorine, and the sterilization speed is 200 - 3000 times faster than chlorine. It can completely destroy the protein and DNA structures of various pathogenic microorganisms and has very strong anti-inflammatory, immune activation and immune regulation effects.

[0005] A large number of studies have found that applying medical ozone to the treatment of fallopian tube obstruction can reduce the occurrence of related complications in traditional fallopian tube dredging. Ozone itself has the effect of sterilization and disinfection, can effectively decompose inflammatory adhesions, and can antagonize the release of inflammatory factors. At the same time, the active ingredients can promote epithelial cell growth and wound healing. The oxygen decomposed can improve the anoxic environment in the uterine cavity and inhibit the growth of anaerobic bacteria.

[0006] Ozone therapy can not only dredge the fallopian tubes through its own characteristics, but also further repair the wound surface of the obstructed segment, eliminate inflammation, prevent adhesion recurrence, so as to achieve the purpose of restoring the function of the fallopian tubes and conceiving as soon as possible. It can be said that ozone therapy is a treatment method that treats both the symptoms and the root causes in the treatment of fallopian tube obstruction, and can truly achieve the ultimate goal of eliminating the adhesion site and restoring the "transmission" function of the fallopian tubes. After the fallopian tubes are dredged, ozone is passed through again, which has significant clinical effects.

[0007] However, at present, there is no fallopian tube catheter kit that can integrate, perform hysterosalpingography, dredge, pass ozone, irrigate and aspirate operations, resulting in low efficiency of fallopian tube dredging operations. Summary of the Utility Model

[0008] (1) Technical problems to be solved

[0009] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present utility model provides a fallopian tube catheter kit, which solves the technical problem that there is no fallopian tube catheter kit in the prior art that can integrate, perform hysterosalpingography, dredge, pass ozone, irrigate and aspirate operations, resulting in low efficiency of fallopian tube dredging operations.

[0010] (2) Technical solutions

[0011] In order to achieve the above object, the main technical solutions adopted by the present utility model include:

[0012] In the first aspect, the present utility model provides a fallopian tube catheter kit, including a guiding tube, an inner catheter, an outer catheter and a guide wire; the guiding tube includes a first tube body and a first joint that are connected; the first joint includes a top interface, a direct port and a side interface; the top interface is connected to the first tube body; the first tube body can be inserted into the outer catheter, the inner catheter can be inserted into the first tube body from the side interface, and the guide wire can be inserted into the inner catheter; the fallopian tube kit can be switched to the first working state when the guiding tube is located inside the outer catheter; it can also be switched to the second working state when the inner catheter is located inside the guiding tube on the basis of the first working state; it can also be switched to the third working state when the guide wire is located inside the inner catheter on the basis of the second working state.

[0013] (3) Beneficial effects

[0014] The beneficial effects of the present utility model are: the fallopian tube catheter kit of the present utility model can perform an initial hysterosalpingography process in the first working state, aiming to check the dredging degree of the fallopian tubes. When the initial hysterosalpingography state detects that the fallopian tubes are blocked, the subsequent second and third working states are carried out. In the first working state, the direct port is opened and the side interface is closed, and the contrast agent is perfused through the direct port.

[0015] The fallopian tubes can be dredged in the third working state, and the fallopian tubes can be dredged by the cooperation of the guide wire and the inner catheter.

[0016] The second working state allows for secondary fallopian tube imaging or lavage. After the fallopian tubes are opened, secondary perfusion of contrast fluid can check the degree of tubal patency. Furthermore, after perfusion of contrast fluid, the fallopian tube catheter kit can be connected to a flushing fluid perfusion device at the end of the inner catheter and a suction device at the direct port to enter the lavage process, flushing out the contrast agent in the fallopian tubes. Furthermore, when the fallopian tubes are inflamed, the fallopian tubes can also be cleaned. A sterilizing gas perfusion device can also be connected to the inner catheter end to treat inflammation of the fallopian tubes.

[0017] The fallopian tube catheter kit of the present invention provides a hardware basis for a series of operations such as fallopian tube angiography, sterilization, dredging, suction and irrigation. The above functions can be achieved through one kit, which greatly simplifies the surgical operation process and thus greatly improves the surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the connection relationship of the fallopian tube catheter kit of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the first joint portion of the utility model;

[0020] Figure 3 This is a structural diagram of the second joint part of the utility model.

[0021] [Description of Reference Numerals]

[0022] 1. Guide tube; 11. First tube body; 111. First soft head; 112. Hard section; 12. First joint; 121. Top interface; 122. Direct interface; 123. Side interface; 13. First outer tube; 124. First connecting section; 125. First knob; 126. First pressure ring; 2. Inner catheter; 21. Second tube body; 22. Second joint; 23. Second outer tube; 221. Second connecting section; 2211. First connecting part; 2212. Second connecting part; 222. Second knob; 223. Second pressure ring; 3. Outer sleeve; 4. Guide wire; 41. Second soft head; 42. Main body; 5. Support rod; 51. Connector; 52. Rod core; 6. Closing plug. DETAILED DESCRIPTION

[0023] In order to better explain the present invention, and to facilitate understanding, the following Figures 1-3 , through the specific implementation method, the utility model is described in detail. Among them, the directional nouns such as "upper" and "lower" mentioned in this article are Figure 1 The orientation of the device is used as a reference, where the head is facing the patient when the device is in use.

[0024] Example 1:

[0025] Referring to Figures 1-3 , an embodiment of the present utility model provides a fallopian tube catheter kit, which includes a guiding tube 1, an inner catheter 2, an outer catheter 3 and a guide wire 4. The guiding tube 1 includes a connected first tube body 11 and a first connector 12. The first connector 12 includes a top interface 121, a direct port 122 and a side interface 123. Both the top interface 121 and the direct port 122 extend vertically. The side interface 123 extends obliquely relative to the direct port 122, and the included angle with the direct port 122 is less than 90°, thereby ensuring that relevant components can be smoothly inserted into the first tube body 11 and also improving the smoothness of the medium flow at the first tube body 11 and the first connector 12; the top interface 121 is connected to the first tube body 11; the first tube body 11 can be inserted into the outer catheter 3, the inner catheter 2 can be inserted into the first tube body 11 from the side interface 123, and the guide wire 4 can be inserted into the inner catheter 2; the fallopian tube kit can be switched to the first working state when the guiding tube 1 is located inside the outer catheter 3; based on the first working state, it can be switched to the second working state when the inner catheter 2 is located inside the guiding tube 1; and based on the second working state, it can be switched to the third working state when the guide wire 4 is located inside the inner catheter 2; in the first working state, the direct port 122 is selectively connected to a contrast agent perfusion device; in the second working state, the inner catheter 2 is selectively connected to a contrast agent perfusion device, a sterilizing gas perfusion device and a flushing solution perfusion device; when the inner catheter 2 is connected to the flushing solution perfusion device, the direct port 122 is selectively connected to a suction device.

[0026] In this embodiment, the first tube body 11 serves as the main channel, allowing the insertion of the inner catheter 2 and the guide wire 4. The first connector 12 includes three interfaces. The top interface 121 is connected to the first tube body 11 to ensure a stable structure. The side interface 123 is used to connect the inner catheter 2, thereby enabling corresponding contrast imaging, sterilization, dredging, and irrigation operations. The direct port 122 allows direct connection to a contrast agent perfusion device to initially perfuse the contrast agent into the fallopian tube.

[0027] The outer catheter 3 is pre-inserted into the uterus, providing an operation and guiding channel for the first tube body 11 to ensure the convenience of the operation process.

[0028] The inner catheter 2 can be inserted into the first tube body 11 through the side interface 123 of the first connector 12. The guide wire 4 can be inserted into the inner catheter 2 to guide the inner catheter 2 into the fallopian tube.

[0029] Moreover, when the guide wire 4 is inserted into the inner catheter 2, the head end of the guide wire 4 is flush with the head end of the inner catheter 2; when the inner catheter 2 is inserted into the guiding tube 1, the head end of the inner catheter 2 is flush with the head end of the guiding tube 1 to ensure the safety and stability of the use of the fallopian tube catheter kit.

[0030] The first working state, the second working state and the first working state are described in detail below.

[0031] The first working state allows for the initial radiography process to check the patency of the fallopian tubes. If the initial radiography reveals blockage of the fallopian tubes, the second and third working states are performed. In the first working state, the direct port 122 is open, the side port 123 is closed, and contrast medium is injected through the direct port 122.

[0032] The third working state can perform the fallopian tube dredging process, and the guide wire 4 cooperates with the inner catheter 2 to achieve the dredging of the fallopian tube.

[0033] The second working state allows for secondary contrast imaging or lavage of the fallopian tubes. After the fallopian tubes are opened, secondary perfusion of contrast fluid can check the degree of tubal patency. Furthermore, after perfusion of contrast fluid, the fallopian tube catheter kit can be connected to a flushing fluid perfusion device at the end of the inner catheter 2 and a suction device at the direct port 122 to enter the lavage process, flushing out the contrast agent in the fallopian tubes. Furthermore, when inflammation of the fallopian tubes is present, the fallopian tubes can also be cleaned. A sterilizing gas perfusion device can also be connected to the end of the inner catheter 2 to treat inflammation of the fallopian tubes.

[0034] The fallopian tube catheter kit of the present invention provides a hardware basis for a series of operations such as fallopian tube angiography, sterilization, dredging, suction and irrigation. The above functions can be achieved through one kit, which greatly simplifies the surgical operation process and thus greatly improves the surgical efficiency.

[0035] Example 2:

[0036] Reference Figures 1-3 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0037] It also includes a support rod 5, which can be inserted into the guide tube 1 from the direct port 122 to help the guide tube 1 be inserted into the outer sleeve 3; the support rod 5 includes a connecting head 51 and a rod core 52 that are connected to each other. When the support rod 5 is inserted into the guide tube 1, the connecting head 51 can be detachably connected to the direct port 122; the head end of the rod core 52 is a tapered cone.

[0038] In this embodiment, the main function of the support rod 5 is to provide additional support and guidance when the guide tube 1 is inserted into the outer tube 3, ensuring that the guide tube 1 can enter the predetermined position smoothly and accurately. This is of great significance for reducing the difficulty of the operation and improving the success rate of the operation.

[0039] One end of the support rod 5 is designed with a connector 51, which can be detachably connected to the direct port 122 on the guiding tube 1. This design enables the support rod 5 to temporarily form an integral structure with the guiding tube 1, thereby facilitating the disassembly and assembly of the guiding tube 1 within the outer sleeve 3.

[0040] The connector 51 is connected to the rod core 52, which is the main part of the support rod 5. The head end of the rod core 52 is designed as a tapered cone. This shape is conducive to gradually expanding the inner diameter of the outer sleeve 3 during the insertion process, reducing resistance, and making it easier for the guiding tube 1 to enter. At the same time, the tapered design can also ensure the stability of the guiding tube 1 to a certain extent after insertion.

[0041] The addition of the support rod 5 makes the function of the fallopian tube catheter kit more complete and the operation more convenient. The tapered cone design of the rod core 52 not only improves the smoothness of the insertion process but also ensures the stability of the guiding tube 1 after insertion. This innovative design will undoubtedly provide a more efficient and safe solution for fallopian tube inspection, treatment, and care.

[0042] Specifically, the connector 51 can be made of polypropylene and is threadedly connected to the direct port 122.

[0043] Embodiment 3:

[0044] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0045] The inner catheter 2 includes a second tube body 21 and a second connector 22 that are connected to each other. The head end of the second tube body 21 is a tapered cone. The guide wire 4 can be inserted into the second tube body 21 from the second connector 22, and the second connector 22 can also selectively communicate with the contrast agent device and the sterilization device; the second tube body 21 can be set as a polytetrafluoroethylene tube.

[0046] In this embodiment, the inner catheter 2 mainly includes two parts, the second tube body 21 and the second connector 22, which are connected to each other to form a complete structure.

[0047] The head end of the second tube body 21 is designed as a tapered cone. This shape helps to gradually expand the inner diameter of the fallopian tube during the insertion process, reduce resistance, and make it easier for the inner catheter 2 to enter and be positioned at the target location.

[0048] The second tube body 21 can be set as a polytetrafluoroethylene tube. Polytetrafluoroethylene has excellent chemical stability, low friction coefficient, and biocompatibility. These properties make it an ideal choice for medical catheter materials. The inner wall of the polytetrafluoroethylene tube is smooth and not easy to adhere to substances, which is conducive to the smooth passage of the guide wire 4 and other instruments.

[0049] The second connector 22 is a crucial part for connecting the inner catheter 2 to external devices or medicaments. It can not only receive contrast agents for fallopian tube imaging examinations, but also receive sterilizing gases or other therapeutic drugs for sterilization or treatment of the fallopian tubes.

[0050] The design of the second connector 22 should take into account sealing performance and connection stability to ensure no leakage or detachment during imaging, sterilization, or treatment processes. It can include threads, snap fasteners, or other mechanical structures for tight connection with other components.

[0051] Embodiment 4:

[0052] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0053] It further includes a closing plug 6, which is detachably connected to the direct port 122 or the second connector 22 to selectively open or close the direct port 122 and the second connector 22.

[0054] In this embodiment, the closing plug 6 is used to selectively open or close the direct port 122 and the second connector 22. During imaging, sterilization, and dredging processes, if there is no need to aspirate and irrigate the fallopian tubes, the direct port 122 is closed through the closing plug 6. On the contrary, when aspirating and irrigating the fallopian tubes, if there is no need for imaging, sterilization, and dredging, the second connector 22 is closed through the closing plug 6.

[0055] Specifically, the closing plug 6 can be set to one, which is a foolproof design. Since in most working conditions, the direct port 122 and the second connector 22 are not closed simultaneously, it is beneficial to ensure the stability when closing the direct port 122 and the second connector 22 and can also reduce costs.

[0056] More specifically, the closing plug 6 can be made of polypropylene and is threadedly connected to the direct port 122 and the second connector 22.

[0057] Embodiment 5:

[0058] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0059] The first joint 12 is detachably connected to the first pipe body 11; the guiding pipe 1 further includes a first outer pipe 13, the first outer pipe 13 is connected to the end of the first pipe body 11, and the first joint 12 is threadedly connected inside the first outer pipe 13; the first joint 12 further includes a first connection section 124 and a first knob 125 connected in sequence, the first connection section 124 is detachably connected to the end of the side interface 123; the first joint 12 further includes a first pressing ring 126, and a first assembly cavity for the first pressing ring 126 is formed inside the first knob 125; the first connection section 124, the first knob 125 and the first pressing ring 126 are coaxial and form an axially through and continuous first connection channel, and the first connection channel communicates with the first pipe body 11; the first pressing ring 126 can be pressed by the first knob 125 and the first connection section 124, so that an inner ring of the first pressing ring 126 forms a first pressing ring with a variable inner diameter size, and then selectively presses the second joint 22 inserted into the first connection channel.

[0060] In this embodiment, the detachable connection between the first joint 12 and the first pipe body 11 can improve the flexibility of use of the guiding pipe 1.

[0061] When the second joint 22 needs to be connected to the side interface 123, first, the second joint 22 needs to be inserted into the first connection channel, and then, the first knob 125 is rotated. Since the first knob 125 is threadedly connected to the first connection section 124, the rotation action will be converted into an axial extrusion of the first pressing ring 126. As the first pressing ring 126 is gradually compressed, the first pressing ring formed by its inner ring will correspondingly decrease, and then selectively presses the second joint 22 inserted into the first connection channel, realizing the limitation of the axial position of the second joint 22 relative to the side interface 123.

[0062] Since the inner diameter size of the first pressing ring 126 can be adjusted as needed, this design can selectively adapt to second joints 22 with different diameters, improving the versatility, compatibility and convenience of the interface.

[0063] The first pressing ring 126 limits the axial position of the second joint 22 by extrusion, ensuring good sealing at the connection, and thus improving the safety of the surgical process to a certain extent.

[0064] Embodiment 6:

[0065] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0066] The second joint 22 is detachably connected to the second tube body 21; the inner catheter 2 further includes a second outer tube 23, the second outer tube 23 is connected to the end of the second tube body 21, and the second joint 22 is threadedly connected inside the second outer tube 23; the second joint 22 includes a second connection section 221 and a second knob 222 connected in sequence, and the second connection section 221 is detachably connected to the second outer tube 23; the second joint 22 further includes a second pressing ring 223, and a second assembly cavity for the second pressing ring 223 is formed inside the second knob 222; the second outer tube 23, the second connection section 221, the second knob 222 and the second pressing ring 223 are coaxial and form an axially through and continuous second connection channel, and the second connection channel communicates with the second tube body 21; the second pressing ring 223 can be pressed by the second knob 222 and the second connection section 221, so that an inner ring of the second pressing ring 223 forms a second pressing ring with a variable inner diameter size, and then selectively presses the guide wire 4 inserted into the second connection channel.

[0067] The first connection section 124 and / or the second connection section 221 includes a first connection part 2211 and a second connection part 2212 that are detachably connected to each other, and the first connection part 2211 is connected to the corresponding side interface 123 or the second outer tube 23; a medium inlet is formed on an end face of the first connection part 2211 facing the second connection part 2212.

[0068] In this embodiment, the detachable connection between the second joint 22 and the second tube body 21 can improve the usage flexibility of the inner catheter 2.

[0069] When it is necessary to connect the guide wire 4 to the second joint 22, first, the guide wire 4 needs to be inserted into the second connection channel, and then, the second knob 222 is rotated. Since the second knob 222 is threadedly connected to the second connection section 221, the rotation action will be converted into an axial extrusion of the second pressing ring 223. As the second pressing ring 223 is gradually compressed, the second pressing ring formed by its inner ring will correspondingly decrease, and then selectively presses the guide wire 4 inserted into the second connection channel, realizing the limitation of the axial position of the guide wire 4 relative to the second joint 22.

[0070] Since the inner diameter size of the second pressing ring 223 can be adjusted as needed, this design can selectively adapt to guide wires 4 with different diameters, improving the versatility, compatibility and convenience of the interface.

[0071] The second pressing ring 223 limits the axial position of the guide wire 4 by extrusion, ensuring good sealing at the connection, and thus improving the safety of the surgical process to a certain extent.

[0072] The first connection section 124 and / or the second connection section 221 adopt a detachable design, which can improve the flexibility of the first connection section 124 and / or the second connection section 221. At the same time, when it is necessary to input a medium into the side interface 123 or the second joint 22, the first connection part 2211 and the second connection part 2212 can be separated, and the medium can be poured into the second joint 22 through the medium inlet of the first connection part 2211, improving the operation convenience.

[0073] Embodiment 7:

[0074] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0075] The first tube body 11 includes a first soft head 111 and a hard section 112 that are connected in sequence. The hard section 112 includes an inner layer, a middle layer, and an outer layer that are connected to each other from the inside to the outside. The inner layer is a polytetrafluoroethylene layer, the middle layer is a stainless steel braided mesh layer, the outer layer is a polyether block polyamide layer, and the first soft head 111 is a polyurethane soft head.

[0076] In this embodiment, the first tube body 11 is the main part of the guiding tube 1 and is mainly composed of two parts: the first soft head 111 and the hard section 112.

[0077] The first soft head 111 is a polyurethane soft head. The polyurethane material has good elasticity and softness, so that the first soft head 111 can reduce irritation and discomfort when contacting human tissues, improving the comfort of the patient. At the same time, the design of the soft head also helps to enter the fallopian tube or other target areas more smoothly.

[0078] The hard section 112 is the main body part of the first tube body 11, and its structure is more complex, including an inner layer, a middle layer, and an outer layer from the inside to the outside.

[0079] The inner layer is a polytetrafluoroethylene layer. Polytetrafluoroethylene has excellent chemical stability and a low friction coefficient, which makes the inner layer surface smooth and not easy to adhere substances, facilitating the smooth passage of the guide wire 4 or other media. The middle layer is a stainless steel braided mesh layer. The stainless steel braided mesh layer provides sufficient radial support force, so that the hard section 112 is not easy to deform or collapse when subjected to external forces, ensuring the structural stability and durability. At the same time, the design of the braided mesh also has a certain flexibility to adapt to the fallopian tubes of different shapes and curvatures. The outer layer is a polyether block polyamide layer. Polyether block polyamide is a high-performance thermoplastic elastomer with good toughness and wear resistance. Using this material for the outer layer not only enhances the mechanical strength of the hard section 112 but also improves its anti-wear and anti-aging capabilities. In addition, polyether block polyamide also has a certain biocompatibility, reducing the irritation to human tissues.

[0080] The design of the first tube body 11 fully integrates the advantages of different materials, ensuring both the structural stability and durability, and improving the comfort and safety of use. The softness of the first soft tip 111 reduces the discomfort of the patient, while the multi-layer structure of the hard segment 112 ensures the smooth passage and stable operation of the catheter. This design innovation makes the fallopian tube catheter kit have higher performance and reliability in medical applications.

[0081] Example 8:

[0082] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0083] The head end of the outer sheath 3 is a tapered conical shape, and the tail end is a flared conical shape; the outer sheath 3 is a polyethylene tube.

[0084] In this embodiment, in the fallopian tube catheter kit, the outer sheath 3 serves as the outer protective sheath for the inner catheter 2 and the guiding catheter 1. It not only needs to have good physical properties but also needs to consider the convenience of operation and the comfort of the patient.

[0085] The overall shape of the outer sheath 3 presents a special design, that is, the head end is a tapered conical shape, while the tail end is a flared conical shape. The head end of the outer sheath 3 is designed as a tapered conical shape, which helps to gradually expand the vagina and cervical orifice during insertion, reducing the resistance during insertion and the discomfort to the patient. At the same time, this shape is also beneficial for the outer sheath 3 to enter and be positioned at the target position more smoothly.

[0086] The tail end of the outer sheath 3 is designed as a flared conical shape, which facilitates the insertion of the guiding catheter 1 and improves the convenience.

[0087] The outer sheath 3 is made of polyethylene material. Polyethylene is a widely used plastic material with good chemical stability, wear resistance, and biocompatibility. Therefore, it is appropriate to choose polyethylene as the material for the outer sheath 3, which can meet the requirements of material properties for medical applications.

[0088] As an important part of the fallopian tube catheter kit, the design of the tapered conical head end and flared conical tail end of the outer sheath 3 and the selection of polyethylene material reflect the ingenuity of the design and the strict requirements for performance. This design not only improves the convenience of operation and the comfort of the patient but also ensures the stability and reliability of the entire kit in medical applications.

[0089] Example 9:

[0090] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0091] At least one of the second tube body 21, the inner layer, and the outer sheath 3 is provided with a developing layer or developing particles; the developing layer or developing particles are made of barium sulfate.

[0092] In this embodiment, in the fallopian tube catheter kit, a developing layer or developing particles are compounded on one or more parts of the second tube body 21, the inner layer, and the outer sheath 3 to improve the visibility of the catheter under X-ray or other imaging techniques, so as to be more accurately positioned and operated. The developing material can be barium sulfate.

[0093] Specifically, the barium sulfate content can be 20% - 40% of the mass fraction of the corresponding structure.

[0094] The barium sulfate is uniformly compounded into the material of the second tube body 21, so that the second tube body 21 can be clearly displayed under X-ray. This helps the doctor accurately judge the position and shape of the inner catheter 2 during the operation, thereby improving the accuracy and safety of the operation.

[0095] If the inner layer is made of materials such as polytetrafluoroethylene, it is also possible to consider compounding a thin layer of barium sulfate on its surface or inside. In this way, even when the inside of the catheter is filled with contrast agent or other liquids, the inner layer can maintain a certain visibility under X-ray, which helps the doctor more comprehensively understand the state of the catheter.

[0096] As the outer protective sleeve of the catheter kit, the outer sheath 3 can also be compounded with developing materials such as barium sulfate. This can not only improve the visibility of the outer sheath 3 under X-ray, but also help the doctor judge whether the outer sheath 3 has been correctly inserted into the target position during the operation, and whether there are any accidental displacements or deformations.

[0097] Barium sulfate is a high-density substance and has a strong absorption ability for X-ray. Therefore, in X-ray imaging, the catheter part compounded with barium sulfate will show an obvious contrast, which is convenient for the doctor to observe and judge.

[0098] Barium sulfate has been widely used in clinical practice as a medical imaging agent, and its biocompatibility has been fully verified. Therefore, compounding barium sulfate in the catheter will not cause additional risks or discomfort to the patient.

[0099] Barium sulfate is chemically stable under normal temperature and pressure and is not easily reacted with other substances. This enables the catheter part compounded with barium sulfate to maintain long-term stability and reliability.

[0100] Composite imaging materials such as barium sulfate in a fallopian tube catheter kit are an effective design measure. It can improve the visibility of the catheter under X-ray or other imaging techniques, thus helping doctors to position and operate more accurately. This design not only improves the accuracy and safety of the surgery, but also brings better treatment effects and experiences to patients.

[0101] Embodiment 10:

[0102] Referring to Figures 1-3 , in addition to having all the technical solutions of any of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0103] The guide wire 4 includes a second soft tip 41 and a body 42 connected to each other. The body 42 includes a core wire, a plastic coating layer, and a hydrophilic lubricating coating from the inside to the outside in sequence; the core wire is a nitinol alloy wire, the second soft tip 41 and the plastic coating layer are a polyurethane tip and a polyurethane layer respectively, and the hydrophilic lubricating coating is a polyacrylamide layer.

[0104] In this embodiment, the guide wire 4 is mainly composed of two parts: a second soft tip 41 and a body 42 connected to each other.

[0105] The second soft tip 41 is made of polyurethane. The polyurethane material has good elasticity and softness, so that the soft tip can reduce irritation and discomfort when contacting human tissues, and improve the comfort of patients. In addition, polyurethane also has good wear resistance and anti-aging performance, ensuring that the guide wire 4 can still maintain stable performance during long-term use.

[0106] The body 42 is the main part of the guide wire 4, and includes a core wire, a plastic coating layer, and a hydrophilic lubricating coating from the inside to the outside in sequence.

[0107] The core wire is made of nitinol alloy wire. Nitinol alloy is a special alloy material with shape memory effect and superelasticity, which can maintain a predetermined shape or restore its original shape at different temperatures. This enables the core wire to deform when subjected to external forces and quickly return to its original shape after the external forces are removed, thus ensuring the stability and reliability of the guide wire 4 during bending and twisting.

[0108] The plastic coating layer is composed of a polyurethane layer. The polyurethane layer tightly wraps around the outside of the core wire, playing a role in protecting the core wire and enhancing the overall strength of the guide wire 4. At the same time, the polyurethane layer also has a certain degree of softness, enabling the guide wire 4 to adapt to the morphological changes of tissues during insertion and reducing resistance.

[0109] The hydrophilic lubricating coating is a polyacrylamide layer. Polyacrylamide is a polymer material with good hydrophilicity and lubricity. After coating the polyacrylamide layer on the surface of the guide wire 4, the friction coefficient between the guide wire 4 and the tissue can be significantly reduced, making the guide wire 4 easier to pass through narrow channels and curved parts. In addition, the hydrophilic lubricating coating can also form a lubricating film on the surface of the guide wire 4, reducing the attachment of bacteria and other microorganisms and lowering the risk of infection.

[0110] It can be understood that in the above-mentioned Embodiments 1-9, except for the conflicting parts, they can be freely combined to form other embodiments of the present utility model.

[0111] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0112] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0113] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0114] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article or device / equipment including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, article or device / equipment.

[0115] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, those skilled in the art can easily understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A fallopian tube catheter kit, characterized in that: It includes a guiding catheter (1), an inner catheter (2), an outer sheath (3) and a guide wire (4); The guiding catheter (1) includes a connected first tube body (11) and a first connector (12). The first connector (12) includes a top interface (121), a direct port (122) and a side interface (123). The top interface (121) is connected to the first tube body (11). The first tube body (11) can be inserted into the outer sheath (3), the inner catheter (2) can be inserted into the first tube body (11) from the side interface (123), and the guide wire (4) can be inserted into the inner catheter (2); When the guiding catheter (1) is located inside the outer sheath (3), the whole fallopian tube kit can be switched to the first working state. Based on the first working state, when the inner catheter (2) is located inside the guiding catheter (1), it can be switched to the second working state. Based on the second working state, when the guide wire (4) is located inside the inner catheter (2), it can be switched to the third working state.

2. The fallopian tube catheter kit according to claim 1, wherein: It further includes a support rod (5), and the support rod (5) can be inserted into the guiding catheter (1) from the direct port (122); The support rod (5) includes a connected connector head (51) and a rod core (52); When the support rod (5) is inserted into the guiding catheter (1), the connector head (51) can be detachably connected to the direct port (122); The head end of the rod core (52) is a tapered cone.

3. The fallopian tube catheter kit according to claim 1, wherein: The inner catheter (2) includes a connected second tube body (21) and a second connector (22). The head end of the second tube body (21) is a tapered cone, and the guide wire (4) can be inserted into the second tube body (21) from the second connector (22); The second tube body (21) is a polytetrafluoroethylene tube.

4. The fallopian tube catheter kit according to claim 3, wherein: It further includes a sealing plug (6), and the sealing plug (6) can be detachably connected to the direct port (122) to selectively open or close the direct port (122).

5. The fallopian tube catheter kit according to claim 3, characterized in that: The first connector (12) is detachably connected to the first tube body (11); The guiding catheter (1) further includes a first outer tube (13), the first outer tube (13) is connected to the end of the first tube body (11), and the first connector (12) is threadedly connected inside the first outer tube (13); The first connector (12) further includes a sequentially connected first connection section (124) and a first knob (125), and the first connection section (124) is detachably connected to the end of the side interface (123); The first connector (12) further includes a first pressing ring (126), and a first assembly cavity for the first pressing ring (126) is formed inside the first knob (125); The first connection section (124), the first knob (125) and the first pressing ring (126) are coaxial and form an axially through and continuous first connection channel, and the first connection channel communicates with the first tube body (11); The first compression ring (126) can be compressed by the first knob (125) and the first connecting section (124), so that the inner ring of the first compression ring (126) forms a first compression ring with a variable inner diameter size, and then selectively compresses the second joint (22) inserted into the first connecting channel.

6. The fallopian tube catheter kit according to claim 5, characterized in that: The second joint (22) is detachably connected to the second tube body (21); The inner catheter (2) further includes a second outer tube (23), the second outer tube (23) is connected to the end of the second tube body (21), and the second joint (22) is threadedly connected inside the second outer tube (23); The second joint (22) includes a second connecting section (221) and a second knob (222) connected in sequence, and the second connecting section (221) is detachably connected to the second outer tube (23); The second joint (22) further includes a second compression ring (223), and a second assembly cavity for the second compression ring (223) is formed inside the second knob (222); the second outer tube (23), the second connecting section (221), the second knob (222) and the second compression ring (223) are coaxial and form an axially through and continuous second connecting channel, and the second connecting channel communicates with the second tube body (21); The second compression ring (223) can be compressed by the second knob (222) and the second connecting section (221), so that the inner ring of the second compression ring (223) forms a second compression ring with a variable inner diameter size, and then selectively compresses the guide wire (4) inserted into the second connecting channel; The first connecting section (124) and / or the second connecting section (221) includes a first connecting portion (2211) and a second connecting portion (2212) that are detachably connected to each other, and the first connecting portion (2211) is connected to the corresponding side interface (123) or the second outer tube (23); a medium inlet is formed on the end face of the first connecting portion (2211) facing the second connecting portion (2212).

7. The fallopian tube catheter kit according to claim 3, characterized in that: The first tube body (11) includes a first soft head (111) and a hard section (112) that are connected in sequence, and the hard section (112) includes an inner layer, a middle layer and an outer layer that are connected to each other from the inside to the outside; The inner layer is a polytetrafluoroethylene layer, the middle layer is a stainless steel braided mesh layer, the outer layer is a polyether block polyamide layer, and the first soft head (111) is a polyurethane soft head.

8. The fallopian tube catheter kit according to claim 7, wherein: At least one of the second tube body (21), the inner layer, and the outer sheath (3) is provided with a developing layer or developing particles; The developing layer or developing particles are barium sulfate.

9. The fallopian tube catheter kit according to claim 1, characterized in that: The head end of the outer sheath (3) is a tapered cone that tapers, and the tail end is a tapered cone that expands; The outer sheath (3) is a polyethylene tube.

10. The fallopian tube catheter kit according to claim 1, wherein: The guide wire (4) includes a second soft head (41) and a body (42) that are connected to each other, and the body (42) includes a core wire, a plastic coating layer and a hydrophilic lubricating coating layer from the inside to the outside in sequence; The core wire is a nitinol wire, the second soft head (41) and the plastic coating layer are a polyurethane head and a polyurethane layer respectively, and the hydrophilic lubricating coating layer is a polyacrylamide layer.

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