Guide wire delivery device for coronary artery bifurcation lesion

Abstract

The invention provides a guide wire delivery device for coronary artery bifurcation lesion, and belongs to the technical field of coronary artery surgical instruments, the guide wire delivery device comprises an auxiliary delivery assembly, the auxiliary delivery assembly is mounted at the end of a puncture needle, and an inner cavity in the middle of the puncture needle is slidably connected with a guide wire; the auxiliary delivery assembly is used for improving the stability of the guide wire in the delivery process, and the auxiliary delivery assembly is connected with the guide wire and the puncture needle. The auxiliary delivery assembly is arranged, the position of a part is changed so as to be matched with other assemblies to limit and adjust a guide wire, the guide wire is prevented from being bent and curled up when entering a puncture needle, and the guide wire can be smoothly pushed in the puncture needle; on one hand, the lightweight design of the whole structure is embodied, on the other hand, the slotted holes can be rapidly connected with other parts in a clamped mode, the fitness between the parts is improved, medical staff can use the device conveniently, and it is also ensured that an operation is conducted smoothly.

Description

Technical Field

[0001] This invention relates to the field of coronary artery surgical instruments, and in particular to a guidewire delivery device for coronary artery bifurcation lesions. Background Technology

[0002] Coronary artery bifurcation lesions refer to the stenosis of the main branch of the coronary artery, combined with stenosis of the openings of important branches. The anatomy and hemodynamics of this lesion are relatively complex. Due to the anatomical characteristics of the bifurcation site, blood flow through the bifurcation ridge often causes regular laminar flow to change into irregular eddies or turbulence, thereby increasing the risk of atherosclerosis.

[0003] Coronary artery bifurcation lesions usually require coronary angiography. The procedure requires many medical instruments such as catheters, guidewires, puncture devices, sheaths, and contrast agents. Before the procedure, all relevant medical instruments need to be checked and prepared in advance to ensure a smooth operation. During the procedure, the puncture needle is fixed in the patient's radial artery. When blood flows out of the puncture needle, it indicates that the patient's blood vessel is patent. At this point, the guidewire is advanced into the puncture needle and into the patient's blood vessel, thereby establishing a vascular track. The guidewire helps the doctor accurately guide the angiography catheter or other interventional treatment devices to the specific location in the coronary artery.

[0004] However, during surgical procedures, the advancement of the guidewire mainly relies on the surgeon's arm pushing it. Normally, the surgeon supports and fixes the puncture needle with one hand, while the other hand pushes the guidewire into the puncture needle. Due to the structural design of the puncture needle, the guidewire advancement port is relatively large. During the process of the guidewire entering the puncture needle, the port of the puncture needle at the point where the puncture needle enters the blood vessel can effectively limit the guidewire, preventing it from deviating. However, the diameter of the guidewire entry end of the puncture needle is relatively large, which can cause the guidewire to deviate during the advancement process. Furthermore, since the guidewire itself is made of shape memory metal, which has good flexibility and durability, the large-diameter end of the puncture needle cannot effectively limit the guidewire during advancement. This can easily cause the guidewire to coil up inside the puncture needle during advancement, thus affecting the normal advancement of the guidewire. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a guidewire delivery device for coronary artery bifurcation lesions, in order to solve the problem that the diameter of the guidewire entry end of the existing puncture needle is large, which causes the guidewire to deviate at the large diameter end during the guidewire advancement operation. In addition, the guidewire itself is made of shape memory metal, which has good flexibility and durability. Therefore, when advancing the guidewire, the large diameter end of the puncture needle cannot effectively limit the guidewire, and the guidewire is prone to curling up inside the puncture needle during the advancement process, thereby affecting the normal advancement of the guidewire.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A guidewire delivery device for coronary artery bifurcation lesions includes an auxiliary delivery component, which is mounted on the end of a puncture needle. A guidewire is slidably connected to the inner lumen of the middle of the puncture needle. A first retaining ring is installed at the end of the puncture needle away from the guidewire. Connecting rings are engaged at the middle positions of both ends of the first retaining ring. A second retaining ring is engaged at the middle of the connecting ring. A shaped frame is installed in the inner lumen of the second retaining ring, and a connecting tube is attached to the bottom of the shaped frame. The auxiliary delivery component is used to improve the stability of the guidewire during delivery and is connected to the guidewire and the puncture needle.

[0008] Optionally, the auxiliary delivery component includes a sliding groove formed on the surface of the second snap ring, a connecting plate fixedly connected to the top of the second snap ring, a sliding part fixedly connected to the inner cavity in the middle of the second snap ring, and a sliding frame slidably connected to the surface of the sliding part.

[0009] Optionally, a support frame is fitted into the inner cavity of the second snap ring, a positioning ring is fixedly connected to the end of the support frame away from the inner cavity of the second snap ring, and a snap-fit ​​post is installed in the inner cavity of the sliding groove.

[0010] Optionally, the top of the irregular frame is provided with a snap-fit ​​groove, the inner cavity of the irregular frame is provided with a hollow part, and the bottom of the irregular frame is fixedly connected with a protrusion.

[0011] Optionally, a friction strip is fixedly connected to the inner cavity of the connecting pipe, and a connecting piece is fixedly connected to the end of the connecting pipe.

[0012] Optionally, the surface of the first snap ring is provided with a guide groove, the inner cavity of the first snap ring is provided with a hollow groove, and a clamping part is provided in the middle of the upper and lower ends of the first snap ring.

[0013] Optionally, a snap-on plate is fixedly connected to the middle of the upper and lower ends of the connecting ring, and a lightweight groove is provided in the middle of the connecting ring.

[0014] Optionally, the diameter of the sliding groove is adapted to the fan-shaped size of the irregular frame, the sliding part protrudes into the inner cavity of the second snap ring, and a sliding groove is provided in the middle of the upper and lower ends of the sliding part. The sliding frame is slidably connected in the sliding groove of the sliding part, and the size of the sliding groove is consistent with the size of the sliding frame.

[0015] Optionally, the support frame is fan-shaped with a slot in the middle of the fan-shaped portion, and the size of the slot is the same as the size of the sliding frame.

[0016] Optionally, the irregularly shaped frame is irregular in shape, and the inner cavity of the irregularly shaped frame is hollow. The protrusion at the bottom of the irregularly shaped frame will abut against the surface of the connecting pipe, and the snap-fit ​​groove snaps into the surface of the snap-fit ​​post.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, by setting up an auxiliary delivery component, the positions between the parts are changed so that they can cooperate with other components to limit and adjust the guidewire, avoiding bending and curling when the guidewire enters the puncture needle, so that the guidewire can be smoothly advanced in the puncture needle. At the same time, multiple slots are opened in the second locking ring, which not only reflects the lightweight design of the overall structure, but also allows the slots to be quickly locked with other parts, improving the fit between the parts, making it convenient for medical staff to use, and ensuring the smooth progress of the operation.

[0019] By setting up a guide groove, a hollow groove, and a clamping part, during angiography, whether before or after the guidewire is advanced into the radial artery, if there is blood flowing out of the patient's radial artery, it will gush out along the inner lumen of the puncture needle. The end of the puncture needle is clamped to the end of the first clamping ring, and the clamping ring has a circular groove at the clamping position. This allows the gushing blood to be guided from the circular groove into the hollow groove for simple collection. The entire clamping ring can also serve as a connection between the puncture needle and the subsequent connecting ring and clamping ring two, improving the overall stability of the mechanism.

[0020] By incorporating friction strips and connecting pieces, during surgery, once the guidewire has successfully passed through the connecting tube, the position of the sliding frame and support frame can be changed during continuous guidewire advancement, causing the connecting tube to stretch or contract. Furthermore, the length of the connecting tube ensures that the shape and state of the guidewire remain unchanged during advancement, guaranteeing the smooth passage of the guidewire through the puncture needle, thus demonstrating the device's practicality. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 A three-dimensional schematic diagram of a guidewire delivery device for coronary artery bifurcation lesions;

[0023] Figure 2 A cross-sectional three-dimensional structural diagram of a guidewire delivery device for coronary artery bifurcation lesions;

[0024] Figure 3 This is a cross-sectional three-dimensional structural diagram of the snap-fit ​​ring;

[0025] Figure 4 A schematic diagram of a three-dimensional structure of a snap-fit ​​ring.

[0026] Figure 5 This is a schematic diagram of the connecting ring and the snap-fit ​​ring.

[0027] Figure 6 A magnified three-dimensional structural diagram of the connecting ring, snap-on plate, and lightweight groove;

[0028] Figure 7 for Figure 5 Cross-sectional three-dimensional structural schematic diagram;

[0029] Figure 8 A schematic diagram of the three-dimensional structure of the support frame, positioning ring, and irregular frame;

[0030] Figure 9 A schematic diagram of the three-dimensional structure of the snap ring, sliding groove, and connecting plate;

[0031] Figure 10 This is a schematic diagram of the three-dimensional structure of the snap-fit ​​ring 2 and the irregular frame;

[0032] Figure 11 A three-dimensional structural diagram of the sliding part, sliding frame, and support frame;

[0033] Figure 12 A schematic diagram of the three-dimensional structure of the snap ring, the irregular frame, and the connecting pipe;

[0034] Figure 13 A schematic diagram of the three-dimensional structure of the irregular frame, the snap-fit ​​groove, and the hollow part;

[0035] Figure 14 A schematic diagram of the three-dimensional structure of the positioning ring, the irregular frame, and the connecting pipe;

[0036] Figure 15 This is a schematic diagram of the three-dimensional structure of the connecting pipe assembly.

[0037] Figure label:

[0038] 1. Guide wire; 2. Puncture needle; 3. Snap ring one; 301. Guide groove; 302. Hollowed-out groove; 303. Clamping part; 4. Connecting ring; 401. Snap plate; 402. Lightweight groove; 5. Snap ring two; 501. Sliding groove; 502. Connecting plate; 503. Sliding part; 504. Sliding frame; 505. Support frame; 506. Positioning ring; 507. Snap post; 6. Irregular frame; 601. Snap groove; 602. Hollowed-out part; 603. Protrusion; 7. Connecting tube; 701. Friction strip; 702. Connecting piece.

[0039] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0040] The guidewire delivery device for coronary artery bifurcation lesions provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0042] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0043] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0044] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0045] like Figures 1 to 15 As shown, an embodiment of the present invention provides a guidewire delivery device for coronary artery bifurcation lesions, including an auxiliary delivery component. The auxiliary delivery component is installed at the end of a puncture needle 2. A guidewire 1 is slidably connected to the inner cavity of the middle part of the puncture needle 2. A locking ring 3 is installed at the end of the puncture needle 2 away from the guidewire 1. A connecting ring 4 is locked at the middle position of the upper and lower ends of the locking ring 3. A second locking ring 5 is locked at the middle of the connecting ring 4. A shaped frame 6 is installed in the inner cavity of the second locking ring 5. A connecting tube 7 is attached to the bottom of the shaped frame 6. The auxiliary delivery component is used to improve the stability of the guidewire during delivery. The auxiliary delivery component is connected to the guidewire 1 and the puncture needle 2. The guidewire 1 and the puncture needle 2 are existing technologies and will not be described in detail. The surface of the locking ring 3 is made of plastic. The inner cavity is made of elastic material, and the inner diameter of the snap ring 3 is slightly smaller than the end of the puncture needle 2. The large diameter end of the puncture needle 2 is directly snapped into the snap ring 3. The connecting ring 4 is disc-shaped and made of plastic. The snap ring 3 and the connecting ring 4 are connected by snapping. The size of the end of the snap ring 5 is slightly larger than the size of the slot in the middle of the connecting ring 4. The snap ring 5 is also connected to the connecting ring 4 by snapping. The snap ring 5 is made of plastic. The irregular frame 6 is snapped into the inner cavity at the top of the snap ring 5. The irregular frame 6 is made of plastic and has a slot in the middle. The connecting tube 7 is made of rubber and is fixed in the middle of the snap ring 5. Its surface will abut against the bottom of the irregular frame 6. The inner cavity of the connecting tube 7 is slidably connected to the guide wire 1.

[0046] In the above structure, all slots are lightweight, minimizing costs and making the overall structure lightweight and easy for medical staff to handle. Normally, before angiography, medical instruments need to be arranged. During this arrangement, the locking ring 3 can be fitted onto the large-diameter end of the puncture needle 2, and then the connecting ring 4 and locking ring 5 can be snapped together. Locking ring 25 is directly snapped into the middle of the connecting ring 4, ensuring a perfect fit. The friction between the connecting ring 4 and locking ring 25 provides a certain degree of stability. Since the puncture needle 2 experiences relatively weak force during the procedure, the connecting ring... The fixation effect between the connecting ring 4 and the second locking ring 5 is achieved through simple locking. Due to the different shapes and sizes of the connecting ring 4 and the second locking ring 5, the fixation effect is better after locking. After the above preparations are completed, coronary angiography can be performed. During the operation, after the previous work is completed, blood flows out of the lumen of the puncture needle, indicating that the patient's blood vessels are patent. The connecting ring 4 and the second locking ring 5, which were fixed together in advance, are locked onto the first locking ring 3. Finally, the guide wire 1 is inserted into the puncture needle 2 through the middle of the connecting tube 7, so as to smoothly enter the patient's radial artery. This facilitates the smooth entry of the guide wire 1 and improves the overall efficiency of the operation.

[0047] like Figure 3 and Figure 4 As shown, the surface of the snap ring 3 is provided with a guide groove 301, and the inner cavity of the snap ring 3 is provided with a hollow groove 302. A clamping part 303 is provided at the middle of the upper and lower ends of the snap ring 3. The guide groove 301 is formed on the surface of the snap ring 3 in a circumferential array, and the hollow groove 302 is formed in the inner cavity of the snap ring 3. The clamping part 303 is designed at the top of the snap ring 3 and has a certain arc shape, the direction of which is opposite to the design of the puncture needle 2. Figure 3 As can be seen, the diameter of the clamping part 303 decreases from left to right, which is the opposite of the design of the puncture needle 2. It can effectively clamp the locking ring 3 onto the puncture needle 2. The side of the locking ring 3 has a locking groove, which allows the connecting ring 4 to be locked inside.

[0048] In the above structure, when the locking ring 3 is engaged with the large-diameter end of the puncture needle 2, the curvature of the clamping part 303 allows the inner cavity of the locking ring 3 to effectively hold the puncture needle 2. Furthermore, after engagement, the puncture needle 2 and the end of the locking ring 3 are on the same plane, preventing insufficient fit between the locking ring 3 and the connecting ring 4 and locking ring 5, which could lead to ineffective fixation. The guide groove 301 can cooperate with the hollow groove 302. During angiography, regardless of whether the guidewire is advanced into the radial artery, if blood flows out of the radial artery, it will gush out along the inner cavity of the puncture needle 2. The end of the puncture needle 2 engages with the end of the locking ring 3, and the locking ring 3 has a circular groove at the engagement point with the puncture needle 2. This allows the gushing blood to be guided from the circular groove into the hollow groove 302 for simple collection (e.g., Figure 4 The entire locking ring 3 can connect the puncture needle 2 with the subsequent connecting ring 4 and locking ring 5, improving the stability of the overall mechanism and thus ensuring that the entire angiography procedure can be performed smoothly.

[0049] like Figures 5 to 7 As shown, a buckle plate 401 is fixedly connected to the middle of the upper and lower ends of the connecting ring 4. A lightweight groove 402 is provided in the middle of the connecting ring 4. The buckle plate 401 is designed to be curved, with the position near the buckle ring 3 tilted upwards, and the fixed end at the top of the connecting ring 4 is also protruding. The inner cavity of the buckle plate 401 is hollowed out. The lightweight groove 402 is a slot opened on the surface of the connecting ring 4, which plays a role in lightweighting.

[0050] In the above structure, the snap-on plate 401 is directly snapped into the snap-on groove of the snap-on ring 3. After snapping, the side of the connecting ring 4 will fit against the side of the snap-on ring 3. During the fitting process, it is only necessary to ensure that the snap-on ring 3 and the connecting ring 4 are in a horizontal state. When they fit tightly, it will not affect the normal advancement of the guide wire 1. After the snap-on plate 401 is snapped into the snap-on groove of the snap-on ring 3, it means that the connecting ring 4 and the snap-on ring 3 have been fixed in position, thus playing a connecting role. This facilitates the fixation of subsequent components, and the removal method is also simple. By pressing the protrusion of the snap-on plate 401, the snap-on plate 401 is tilted downward. During the tilting process, the connecting ring 4 can be taken out away from the snap-on ring 3, which reflects the convenience of the device.

[0051] like Figures 8 to 12As shown, the auxiliary delivery assembly includes a sliding groove 501 formed on the surface of the second snap-fit ​​ring 5. A connecting plate 502 is fixedly connected to the top of the second snap-fit ​​ring 5. A sliding part 503 is fixedly connected to the inner cavity of the second snap-fit ​​ring 5. A sliding frame 504 is slidably connected to the surface of the sliding part 503. A support frame 505 is fitted into the inner cavity of the second snap-fit ​​ring 5. A positioning ring 506 is fixedly connected to the end of the support frame 505 away from the inner cavity of the second snap-fit ​​ring 5. A snap-fit ​​post 507 is installed in the inner cavity of the sliding groove 501. The sliding groove 501 is formed on the top of the second snap-fit ​​ring 5. The connecting plate 502 is fixed in the middle of the second snap-fit ​​ring 5. The sliding part 503 is located at... The inner cavity of the snap ring 5 has sliding grooves at both the upper and lower ends of the sliding part 503. The sliding frame 504 is U-shaped, and the size of the middle part of the sliding frame 504 is the same as the size of the sliding groove of the sliding part 503, which facilitates the sliding frame 504 to slide on the sliding part 503. The end of the support frame 505 is attached to the inner wall of the end of the snap ring 5, and the side of the sliding frame 504 is attached to the side of the support frame 505. The positioning ring 506 is cylindrical in shape and hollow in the middle. The surface of the positioning ring 506 is fixed to the end of the support frame 505 near the center of the snap ring 5. The snap post 507 is cylindrical and fixed on both sides of the sliding groove 501.

[0052] In the above structure, the end of the snap ring 2 5 is directly snapped into the middle of the connecting ring 4, and they are mutually compatible. After the connecting ring 4 and the snap ring 2 5 are snapped into each other, the support frame 505 can be pushed. Since the support frame 505 and the sliding frame 504 are in a fixed state, the sliding frame 504 will also be pushed when the support frame 505 is pushed. During the pushing process, the sliding frame 504 will slide along the sliding grooves at the upper and lower ends of the sliding part 503. As the support frame 505 is pushed towards the position of the connecting ring 4, the positioning ring 506 will also move with the support frame 505. By changing the position between the parts, the guide wire 1 can be limited and adjusted in conjunction with other components, so as to prevent the guide wire 1 from bending and curling when entering the puncture needle 2, so that the guide wire 1 can be pushed smoothly into the puncture needle 2. At the same time, multiple slots are opened in the snap ring 2 5. On the one hand, it reflects the lightweight design of the overall structure, and on the other hand, the slots can be quickly snapped into other parts, improving the fit between the parts and making it convenient for medical staff to use.

[0053] like Figures 13 to 14 As shown, the top of the irregular frame 6 is provided with a snap-fit ​​groove 601, the inner cavity of the irregular frame 6 is provided with a hollow part 602, and the bottom end of the irregular frame 6 is fixedly connected with a protrusion 603. The snap-fit ​​groove 601 is opened in the middle of the arc at the top of the irregular frame 6, the hollow part 602 is hollowed out in the inner cavity of the irregular frame 6, and the protrusion 603 is the protrusion at the bottom end of the irregular frame 6.

[0054] In the above structure, in the initial state, the snap-fit ​​groove 601 at the top of the irregular frame 6 is snapped onto the snap-fit ​​post 507. Since the snap-fit ​​posts 507 are distributed vertically, the snap-fit ​​groove 601 can be snapped onto either the vertical or horizontal snap-fit ​​post 507, and the shape of the snap-fit ​​groove 601 is adapted to the shape of the snap-fit ​​post 507 (e.g., Figure 13 Therefore, the stability of the irregular frame 6 mainly relies on the snap-fit ​​groove 601 snapping onto the snap-fit ​​post 507. The irregular frame 6 is very lightweight due to the hollow part 602. In addition, the irregular frame 6 is made of plastic. When the snap-fit ​​groove 601 snaps onto the snap-fit ​​post 507, the position of the protrusion 603 will change. This, together with other components, will provide local obstruction to the guide wire 1. This will further ensure that the guide wire 1 can move normally in the puncture needle 2 and the patient's radial artery when the medical staff advances the guide wire 1, thereby reducing the risks in the operation and improving the ability of the guide wire 1 to pass smoothly through the puncture needle 2 and the patient's radial artery.

[0055] like Figure 15 As shown, a friction strip 701 is fixedly connected to the inner cavity of the connecting pipe 7, and a connecting piece 702 is fixedly connected to the end of the connecting pipe 7. The friction strip 701 is fixed in the inner cavity of the connecting pipe 7 and is evenly distributed in an array. The connecting piece 702 connects the connecting pipe 7 and the positioning ring 506. The connecting pipe 7 is made of rubber, and the surface of the connecting pipe 7 will abut against the protrusion 603.

[0056] In the above structure, the end of the connecting piece 702 is fixed to the end of the positioning ring 506, making the positioning ring 506 and the connecting piece 702 an integral design. When the sliding frame 504 and the support frame 505 are pushed, the positioning ring 506 will also move, thereby lengthening or shortening the length of the connecting tube 7. Initially, it is not necessary to adjust the position of the sliding frame 504 and the support frame 505. When the guide wire 1 is pushed into the connecting tube 7, after the guide wire 1 and the connecting tube 7 have a preliminary fit, the sliding frame 504 and the support frame 505 can change the overall shape of the connecting tube 7. After changing the shape of the connecting tube 7, the friction strip 701 will also change position, fitting the guide wire 1 more closely. During the operation, after the guide wire 1 passes through the connecting tube 7 smoothly, the position of the sliding frame 504 and the support frame 505 can be changed during the continuous advancement of the guide wire 1, thereby making the connecting tube 7 more flexible. The device is designed to be stretched or contracted, and the length of the connecting tube 7 ensures that the shape and state of the guide wire 1 do not change during the advancement process, thus ensuring that the guide wire 1 passes smoothly through the puncture needle 2. This demonstrates the practicality of the device. At the same time, the surface of the connecting tube 7 will abut against the protrusion 603. In the above steps, the overall irregular frame 6 can also be displaced by the upper and lower locking slots 601. With the overall vertical displacement of the irregular frame 6, the contact pressure between the protrusion 603 at its bottom end and the surface of the connecting tube 7 is different, resulting in different squeezing effects of the protrusion 603 on the surface of the connecting tube 7. This is particularly evident when the irregular frame 6 is displaced downwards, resulting in a stronger squeezing effect of the protrusion 603 on the surface of the connecting tube 7. On this basis, the friction strip 701 inside the connecting tube 7 will have a more obvious effect of gathering towards the middle after being squeezed from the top, thus providing better protection for the advancement of the guide wire 1. This is reflected in the later stages of the subsequent advancement of the guide wire 1.

[0057] The usage process of the technical solution provided by this invention is as follows:

[0058] In its initial state, the entire structure is made of plastic, except for the connecting tube 7 which comes into contact with guide wire 1.

[0059] In the entire mechanism, the opening serves two purposes: firstly, it contributes to the overall lightweight design, making it easier for medical staff to handle; secondly, it allows for interlocking with other components, improving the overall plasticity of the structure and its compatibility with guide wire 1 and puncture needle 2.

[0060] Before performing the angiography procedure, the relevant medical instruments need to be arranged and placed. During this arrangement, the locking ring 3 can be placed on the large-diameter end of the puncture needle 2. Then, the connecting ring 4 and the locking ring 2 5 are snapped together, with the locking ring 2 5 directly snapped into the middle of the connecting ring 4, ensuring a perfect fit. The friction between the connecting ring 4 and the locking ring 2 5 provides a certain degree of stability. Since the overall force on the puncture needle 2 is relatively weak during the procedure, the fixation between the connecting ring 4 and the locking ring 2 5 is achieved through a simple snap-fit. The shape and size of the locking ring 25 are different from those of the locking ring 35, which provides better fixation after locking. After the above preparations are completed, coronary angiography can be performed. During the operation, after the previous work is completed, blood flows out of the lumen of the puncture needle, indicating that the patient's blood vessels are patent. The connecting ring 4 and locking ring 25, which are fixed together in advance, are locked onto locking ring 3. Finally, the guide wire 1 is inserted into the puncture needle 2 through the middle of the connecting tube 7, so that it can be smoothly inserted into the patient's radial artery, which facilitates the smooth entry of the guide wire 1 and improves the overall efficiency of the operation.

[0061] When the locking ring 3 is engaged with the large-diameter end of the puncture needle 2, the curvature of the clamping part 303 ensures that the inner cavity of the locking ring 3 can effectively hold the puncture needle 2. Furthermore, after engagement, the ends of the puncture needle 2 and the locking ring 3 are on the same plane, preventing insufficient fit and ineffective fixation when the locking ring 3 engages with the connecting ring 4 and the second locking ring 5. The guide groove 301 can cooperate with the hollow groove 302. During angiography, regardless of whether the guidewire is advanced into the radial artery, if blood flows out of the radial artery, it will gush out along the inner cavity of the puncture needle 2. The end of the puncture needle 2 engages with the end of the locking ring 3, and the locking ring 3 has a circular groove at the engagement point with the puncture needle 2, allowing the gushing blood to enter the hollow groove 302 for simple collection (e.g., Figure 4 The entire locking ring 3 can connect the puncture needle 2 with the subsequent connecting ring 4 and locking ring 5, improving the stability of the overall mechanism and thus ensuring that the entire angiography procedure can be performed smoothly.

[0062] Next, the buckle plate 401 is directly snapped into the snap-fit ​​groove of the snap-fit ​​ring 3. After snapping, the side of the connecting ring 4 will fit against the side of the snap-fit ​​ring 3. During the fitting process, it is important to ensure that the snap-fit ​​ring 3 and the connecting ring 4 are in a horizontal state. The tight fit will not affect the normal advancement of the guide wire 1. After the buckle plate 401 is snapped into the snap-fit ​​groove of the snap-fit ​​ring 3, it means that the connecting ring 4 and the snap-fit ​​ring 3 have been fixed in position, thus playing a connecting role. This facilitates the fixation of subsequent components, and the removal method is also simple. By pressing the protrusion of the buckle plate 401, the buckle plate 401 is tilted downward. During the tilting process, the connecting ring 4 can be removed away from the snap-fit ​​ring 3, demonstrating the convenience of the device.

[0063] During preoperative preparation, the connecting ring 4 and the second locking ring 5 can be locked together first, and then locked onto the first locking ring 3. The end of the second locking ring 5 is directly locked onto the middle of the connecting ring 4, and they are mutually compatible. After locking the connecting ring 4 and the second locking ring 5 together, the support frame 505 can be pushed. Since the support frame 505 and the sliding frame 504 are in a fixed state, the sliding frame 504 will also be pushed when the support frame 505 is pushed. During the pushing process, the sliding frame 504 will slide along the grooves at the upper and lower ends of the sliding part 503. As the support frame 505 is pushed toward the position of the connecting ring 4, the positioning ring 506 will also move with the support frame 505, thereby changing its position so as to limit and adjust the guide wire 1 in conjunction with other components, preventing the guide wire 1 from bending and curling when entering the puncture needle 2, so that the guide wire 1 can be pushed smoothly into the puncture needle 2, thereby ensuring the smooth progress of the operation.

[0064] In the initial state, the snap-fit ​​groove 601 at the top of the irregular frame 6 is snapped onto the snap-fit ​​post 507. Since the snap-fit ​​posts 507 are distributed vertically, the snap-fit ​​groove 601 can be snapped onto either the vertical or horizontal snap-fit ​​post 507, and the shape of the snap-fit ​​groove 601 is adapted to the shape of the snap-fit ​​post 507, such as ( Figure 13 Therefore, the stability of the irregular frame 6 mainly relies on the snap-fit ​​groove 601 snapping onto the snap-fit ​​post 507. The irregular frame 6 is very lightweight due to the hollow part 602. In addition, the irregular frame 6 is made of plastic. When the snap-fit ​​groove 601 snaps onto the snap-fit ​​post 507, the position of the protrusion 603 will change. This, together with other components, will provide local obstruction to the guide wire 1. This will further ensure that the guide wire 1 can move normally in the puncture needle 2 and the patient's radial artery when the medical staff advances the guide wire 1, thereby reducing the risks in the operation and improving the ability of the guide wire 1 to pass smoothly through the puncture needle 2 and the patient's radial artery.

[0065] The end of the connecting piece 702 is fixed to the end of the positioning ring 506, making the positioning ring 506 and the connecting piece 702 an integral design. When the sliding frame 504 and the support frame 505 are pushed, the positioning ring 506 will also move, thereby lengthening or shortening the length of the connecting tube 7. Initially, the positions of the sliding frame 504 and the support frame 505 do not need to be adjusted. After the guide wire 1 is pushed into the connecting tube 7 and there is an initial fit between the guide wire 1 and the connecting tube 7, the length of the connecting tube 7 is then adjusted by the sliding frame 504 and the support frame 505. The device can change the overall shape of the connecting tube 7. After changing the shape of the connecting tube 7, the friction strip 701 will also change position and fit the guide wire 1 more closely. Thus, during the operation, after the guide wire 1 passes through the connecting tube 7 smoothly, the position of the sliding frame 504 and the support frame 505 can be changed during the continuous advancement of the guide wire 1, so that the connecting tube 7 can be stretched or contracted. Moreover, the length of the connecting tube 7 ensures that the shape and state of the guide wire 1 will not change during the advancement process, ensuring that the guide wire 1 passes through the puncture needle 2 smoothly, which demonstrates the practicality of the device.

[0066] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0067] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A guidewire delivery device for coronary artery bifurcation lesions, characterized in that, The device includes an auxiliary delivery component, which is installed at the end of a puncture needle. A guide wire is slidably connected to the inner cavity of the middle of the puncture needle. A locking ring one is installed at the end of the puncture needle away from the guide wire. A connecting ring is locked at the middle position of both the upper and lower ends of the locking ring one. A locking ring two is locked at the middle of the connecting ring. A shaped frame is installed in the inner cavity of the locking ring two. A connecting tube is attached to the bottom of the shaped frame. The auxiliary delivery component is used to improve the stability of the guidewire during delivery, and the auxiliary delivery component is connected to the guidewire and the puncture needle.

2. The guidewire delivery device for coronary artery bifurcation lesions according to claim 1, characterized in that, The auxiliary delivery component includes a sliding groove formed on the surface of the second snap ring, a connecting plate fixedly connected to the top of the second snap ring, a sliding part fixedly connected to the inner cavity in the middle of the second snap ring, and a sliding frame slidably connected to the surface of the sliding part.

3. The guidewire delivery device for coronary artery bifurcation lesions according to claim 2, characterized in that, The inner cavity of the second snap ring is fitted with a support frame, and a positioning ring is fixedly connected to the end of the support frame away from the inner cavity of the second snap ring. A snap-fit ​​post is installed in the inner cavity of the sliding groove.

4. The guidewire delivery device for coronary artery bifurcation lesions according to claim 1, characterized in that, The top of the irregular frame has a snap-fit ​​groove, the inner cavity of the irregular frame has a hollow part, and the bottom of the irregular frame is fixedly connected to a protrusion.

5. The guidewire delivery device for coronary artery bifurcation lesions according to claim 1, characterized in that, A friction strip is fixedly connected to the inner cavity of the connecting pipe, and a connecting piece is fixedly connected to the end of the connecting pipe.

6. The guidewire delivery device for coronary artery bifurcation lesions according to claim 1, characterized in that, The surface of the first snap ring is provided with a guide groove, the inner cavity of the first snap ring is provided with a hollow groove, and the middle of the upper and lower ends of the first snap ring is provided with a clamping part.

7. The guidewire delivery device for coronary artery bifurcation lesions according to claim 1, characterized in that, The connecting ring has a snap-on plate fixedly connected to the middle of its upper and lower ends, and a lightweight groove is provided in the middle of the connecting ring.

8. The guidewire delivery device for coronary artery bifurcation lesions according to claim 2, characterized in that, The diameter of the sliding groove is adapted to the fan-shaped size of the irregular frame. The sliding part protrudes into the inner cavity of the second snap ring, and a sliding groove is provided in the middle of the upper and lower ends of the sliding part. The sliding frame is slidably connected in the sliding groove of the sliding part, and the size of the sliding groove is consistent with the size of the sliding frame.

9. The guidewire delivery device for coronary artery bifurcation lesions according to claim 3, characterized in that, The support frame is fan-shaped with a slot in the middle of the fan-shaped part, and the size of the slot is the same as the size of the sliding frame.

10. The guidewire delivery device for coronary artery bifurcation lesions according to claim 4, characterized in that, The irregularly shaped frame is irregular in shape and has a hollow interior. The protrusion at the bottom of the irregularly shaped frame will abut against the surface of the connecting pipe, and the snap-fit ​​groove snaps into the surface of the snap-fit ​​post.

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