Guide wire auxiliary device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a guide wire auxiliary device which comprises a catheter assembly and a supporting rod, the catheter assembly comprises a near end and a far end which are oppositely arranged, the catheter assembly is provided with a first pipe cavity allowing a guide wire or liquid to pass through, and the two ends of the first pipe cavity are located at the near end and the far end respectively. Developing marks are arranged at the two ends of the far end in the first direction respectively, a first outlet and a second outlet are formed in the far end of the first pipe cavity in a communicating mode in the second direction, and the first outlet and the second outlet are oppositely arranged; the supporting rod can extend into the first tube cavity, has elasticity and is used for supporting the catheter assembly; wherein the first direction and the second direction are arranged in the radial direction of the first tube cavity, the first direction is perpendicular to the second direction, the guide wire auxiliary device can assist the guide wire in achieving target and directional puncture, and the operation success rate is increased.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a guide wire assisting device. Background Art

[0002] In percutaneous coronary intervention (PCI), chronic total occlusion (CTO) remains the most challenging type of lesion. Whether it is the selection of the antegrade intervention path, the supplementation of the retrograde intervention method, or the precise intervention surgical strategy under the guidance of IVUS, ADR (Antegrade Dissection Reentry) is listed as an important means / strategy for opening. Although there are various possible paths for the ADR method, including but not limited to the wire-based STAR and LAST techniques and the antegrade subintimal technical route assisted by devices such as the Stingray balloon or Recross double-lumen microcatheter, the overall operation difficulty is relatively large and the surgical success rate is relatively low. Summary of the Utility Model

[0003] The purpose of this application is to provide a guide wire assisting device, which can assist the guide wire to achieve targeted and directional puncture and improve the surgical success rate.

[0004] To this end, an embodiment of this application provides a guide wire assisting device, including: a catheter assembly including a proximal end and a distal end arranged oppositely, the catheter assembly having a first lumen for a guide wire or liquid to pass through, both ends of the first lumen being located at the proximal end and the distal end respectively, the distal end being provided with imaging markers at both ends along a first direction, the first lumen being communicatively provided with a first outlet and a second outlet along a second direction at the distal end, the first outlet and the second outlet being arranged oppositely; and a support rod that can extend into the first lumen, the support rod having elasticity and being used to support the catheter assembly; wherein, the first direction and the second direction are respectively arranged along the radial direction of the first lumen, and the first direction is perpendicular to the second direction.

[0005] In a possible implementation manner, a third outlet is communicatively provided at the end of the first lumen far from the proximal end.

[0006] In a possible implementation manner, the distal end of the catheter assembly is a flat structure extending along the first direction.

[0007] In a possible implementation manner, the catheter assembly further has a second lumen for a guide wire or liquid to pass through, both ends of the second lumen being located at the proximal end and the distal end respectively, the second lumen and the first lumen being arranged along the first direction, and the support rod can extend into the second lumen.

[0008] In a possible implementation, the catheter assembly further includes a third lumen disposed at the distal end for the entry and exit of instruments, and the third lumen and the first lumen are arranged along a first direction.

[0009] In a possible implementation, the first lumen is located between the second lumen and the third lumen, and two imaging markers are respectively disposed outside the second lumen and the third lumen.

[0010] In a possible implementation, the first lumen, the second lumen, and the third lumen have a smoothly transitioning incision structure at the end far from the proximal end.

[0011] In a possible implementation, the catheter assembly further includes an intermediate portion located between the proximal end and the distal end, and the cross-section of the intermediate portion is circular or elliptical.

[0012] In a possible implementation, the support rod is a solid structure; or, a hollow through-hole is disposed inside the support rod along the extending direction.

[0013] In a possible implementation, the guide wire assisting device further includes: a first connector connected to the proximal end of the catheter assembly; and a second connector connected to one end of the support rod, and the second connector is detachably connected to the first connector.

[0014] In a possible implementation, the first connector includes a catheter seat and a stress-relieving tube connected to the catheter seat, and the stress-relieving tube is connected to the proximal end of the catheter assembly.

[0015] According to the guide wire assisting device provided by the embodiments of the present application, the guide wire assisting device ensures the overall pushability and anti-flexibility of the catheter assembly through the support rod. The guide wire is conveyed through the first lumen of the catheter assembly, and the imaging markers at the distal end of the catheter assembly can display the angle of the distal end in the blood vessel, and then it is selected to be exported through the first outlet or the second outlet, so that the guide wire bypasses the occluded part in the blood vessel and returns to enter the true lumen of the blood vessel, which can assist the guide wire to achieve targeted and directional puncture and improve the success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative efforts.

[0018] One or more embodiments are illustrated by way of example in the accompanying drawings, which illustrations do not constitute a limitation on the embodiments. Elements with the same reference numeral in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a scale limitation.

[0019] Figure 1 Schematic structural diagram showing a wire guiding assistance device provided by an embodiment of the present application;

[0020] Figure 2 Schematic structural diagram showing a wire guiding assistance device with a single support rod according to an embodiment of the present application;

[0021] Figure 3 Schematic structural diagram showing the distal end of a catheter assembly provided by an embodiment of the present application;

[0022] Figure 4 Schematic structural diagram showing the middle part of a catheter assembly provided by an embodiment of the present application;

[0023] Figure 5 Schematic structural diagram showing the proximal end of a catheter assembly and a first joint provided by an embodiment of the present application;

[0024] Figure 6 Show Figure 5 Schematic structural diagram showing the catheter assembly shown and two support rods;

[0025] Figure 7 Show Figure 5 Schematic structural diagram showing the catheter assembly shown and a single support rod;

[0026] Figure 8 Schematic structural diagram showing a catheter assembly and a first joint provided by an embodiment of the present application;

[0027] Figure 9 Show Figure 8 Schematic cross-sectional structural diagram along the A-A direction;

[0028] Figure 10 Show Figure 8 Schematic cross-sectional structural diagram along the B-B direction;

[0029] Figure 11 Schematic structural diagram showing another catheter assembly and a first joint provided by an embodiment of the present application;

[0030] Figure 12 Show Figure 11 Schematic cross-sectional structural diagram along the C-C direction;

[0031] Figure 13 Schematic structural diagram showing a solid support rod and a second joint provided by an embodiment of the present application;

[0032] Figure 14 The structural schematic diagram of a support rod with a hollow through - hole and a second joint provided by an embodiment of the present application is shown.

[0033] Explanation of reference numerals:

[0034] X, the first direction; Y, the second direction;

[0035] 1, catheter assembly; 11, proximal end; 12, distal end; 13, first lumen; 131, first outlet; 132, second outlet; 133, third outlet; 14, radiopaque marker; 15, second lumen; 16, third lumen; 161, marker; 17, incision structure; 18, middle part;

[0036] 2, support rod; 21, hollow through - hole;

[0037] 3, first joint; 31, catheter seat; 32, stress - relieving tube;

[0038] 4, second joint. Detailed implementation manners

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0040] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. To simplify the disclosure of the embodiments of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present application. In addition, the embodiments of the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0041] For ease of description, spatial relative relation terms may be used in the text to describe the relative position or movement of one element or feature shown in the figure with respect to another element or feature. These relative relation terms are, for example, "inner", "outer", "inside", "outside", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relation terms are intended to include different orientations of the device during use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or motion state change, then these directional indications will change accordingly. For example, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relation descriptors used in the text are interpreted accordingly.

[0042] To solve the problems in the prior art, the present application provides a guide wire assisting device, which can assist the guide wire to achieve targeted and directional puncture and improve the success rate of the operation.

[0043] As Figures 1-14 As shown, an embodiment of the present application provides a guide wire assisting device, including: a catheter assembly 1, including a proximal end 11 and a distal end 12 which are oppositely arranged, the catheter assembly 1 having a first lumen 13 for passing a guide wire or liquid, both ends of the first lumen 13 being located at the proximal end 11 and the distal end 12 respectively, the distal end 12 being provided with imaging markers 14 at both ends along a first direction X, the first lumen 13 being provided with a first outlet 131 and a second outlet 132 along a second direction Y at the distal end 12, the first outlet 131 and the second outlet 132 being oppositely arranged; and a support rod 2, which can extend into the first lumen 13, the support rod 2 having elasticity and being used for supporting the catheter assembly 1; wherein, the first direction X and the second direction Y are respectively arranged along the radial direction of the first lumen 13, and the first direction X is perpendicular to the second direction Y.

[0044] In the present application, the pushability and anti-folding property of the whole catheter assembly 1 are ensured by the support rod 2. The guide wire is conveyed through the first lumen 13 of the catheter assembly 1. The imaging markers 14 at the distal end 12 of the catheter assembly 1 can show the angle of the distal end 12 in the blood vessel, and then it is selected to be led out through the first outlet 131 or the second outlet 132, so that the guide wire can bypass the occluded part in the blood vessel and re-enter the true lumen of the blood vessel, which can assist the guide wire to achieve targeted and directional puncture and improve the success rate of the operation.

[0045] Specifically, the proximal end 11 of the catheter assembly 1 refers to the end located outside the blood vessel, and the distal end 12 refers to the end inserted into the blood vessel. The support rod 2 is inserted into the first lumen 13 through the proximal end 11 of the catheter assembly 1 and matches the length of the first lumen 13, which increases the pushability and anti-flexibility of the entire catheter assembly 1. The guide wire is introduced into the first lumen 13 from the proximal end 11 of the catheter assembly 1 and exported through the first outlet 131 or the second outlet 132 to achieve the auxiliary delivery of the guide wire. The first lumen 13 can not only be used for the auxiliary delivery of the guide wire, but also perform aspiration operations to extract the liquid in the blood vessel.

[0046] In the related art, although there are various possible paths for the ADR technique, including but not limited to the wire-based STAR and LAST techniques and the antegrade subintimal technique route assisted by devices such as the Stingray balloon or the Recross double-lumen microcatheter, the overall operation difficulty is large, the success rate is low, and the replicability is insufficient.

[0047] 1. The wire-based ADR opening strategy often relies on the strong experience and level of the operator. Coupled with the weak maneuverability of the single wire operation, the applicable population of this technical means has great limitations.

[0048] 2. The device-based ADR opening strategy is restricted by the poor passability, easy failure, and long learning curve of the existing devices, making it difficult to be widely promoted and applied; there are few reports on the ADR opening assisted by some double-lumen microcatheters. The reason is that there are blind ligation and uncontrollability of the guide wire in the device itself.

[0049] 3. Although the retrograde intervention treatment has benefited from the continuous development and prosperity of microcatheter devices over the years, which has greatly improved the surgical success rate, it is ultimately daunting for most middle-aged and young backbone doctors due to the many complications and high complexity of the retrograde intervention surgery, thus greatly affecting the opening of CTO lesions.

[0050] In the embodiments of the present application, the catheter assembly 1 is supported by the elastic support rod 2, so that the catheter assembly 1 has good pushability and anti-flexibility. The guide wire is conveyed through the first lumen 13, and the two imaging markers 14 at the distal end 12 can show the angle at which the distal end 12 is located. Since the two imaging markers 14 are oppositely arranged along the first direction X, if the two imaging markers 14 can be seen, it proves that the first direction X and the direction of the observation view form a first included angle at this time, and the size of the first included angle is about 90°. According to the need, the guide wire is selected to be led out through the first outlet 131 or the second outlet 132. At this time, one of the first outlet 131 and the second outlet 132 is in the same direction as the observation view direction, and the other is opposite to the observation view direction. If only one imaging marker 14 can be seen, it proves that the two imaging markers 14 at least partially overlap. At this time, the first direction X and the direction of the observation view form a second included angle, and the size of the second included angle is about 0°. According to the need, the guide wire is selected to be led out through the first outlet 131 or the second outlet 132. At this time, the directions of the first outlet 131 and the second outlet 132 are close to the vertical observation view direction. Therefore, it is possible to guide the operator to perform purposeful and directional punctures, rather than blindly manipulating the guide wire, which is convenient for passing the guide wire through the intima of the vascular structure to bypass the diseased area and return to the true lumen of the blood vessel.

[0051] As Figure 3 shown, in some embodiments, a third outlet 133 is connected and arranged at the end of the first lumen 13 far from the proximal end 11.

[0052] In the present application, since the first outlet 131 and the second outlet 132 are both arranged along the radial direction of the first lumen 13, and the catheter assembly 1 is in the blood vessel, after the catheter assembly 1 encounters a diseased area, it pierces from the true lumen of the blood vessel into the subintima of the blood vessel, bypasses the diseased area under the intima, and then leads out the guide wire through the first outlet 131 or the second outlet 132 to return to the true lumen of the blood vessel again. The third outlet 133 can also be used for leading out the guide wire or aspirating liquid.

[0053] As Figure 10 shown, in some embodiments, the distal end 12 of the catheter assembly 1 is a flat structure extending along the first direction X.

[0054] In the present application, by setting the distal end 12 of the catheter assembly 1 as a flat structure, it is convenient for the distal end 12 of the catheter assembly 1 to be conveyed in the intima of the blood vessel. Moreover, the flat structure is arranged along the first direction X, while the first outlet 131 and the second outlet 132 are respectively arranged along the second direction Y, and the first outlet 131 and the second outlet 132 are oppositely arranged, and the second direction Y is also perpendicular to the first direction X. Therefore, one of the first outlet 131 and the second outlet 132 must face the true lumen of the blood vessel, thereby effectively assisting the guide wire to return from the intima of the blood vessel to the true lumen.

[0055] Specifically, the two visualization markers 14 are respectively located at both ends of the flat structure along the first direction X. By observing the quantity and size of the visualized area, the position of the distal end 12 of the catheter assembly 1 within the vascular intima can be determined, thereby enabling the selection of either the first outlet 131 or the second outlet 132 to guide the guide wire out.

[0056] In the present application, the visualization marker 14 is a strip-shaped structure extending along the length direction of the catheter assembly 1. The first outlet 131 and the second outlet 132 are respectively located on both sides of the visualization marker 14. By controlling the position of the end of the guide wire, the guide wire can be controlled to be led out through either the first outlet 131 or the second outlet 132. Specifically, by stopping the end of the guide wire at one end of the visualization marker 14, the guide wire can only be led out through the first outlet 131, and by stopping the end of the guide wire at the other end of the visualization marker 14, the guide wire can only be led out through the second outlet 132. The visualization marker 14 can also assist the operator in determining the accurate lead-out position, facilitating the operation of the operator.

[0057] In some embodiments, the catheter assembly 1 further has a second lumen 15 for the passage of the guide wire or liquid. Both ends of the second lumen 15 are respectively located at the proximal end 11 and the distal end 12. The second lumen 15 and the first lumen 13 are arranged along the first direction X, and the support rod 2 can extend into the second lumen 15.

[0058] In the present application, the second lumen 15 is also a long lumen. By respectively extending the two support rods 2 into the first lumen 13 and the second lumen 15, the pushability and anti-flexibility of the catheter assembly 1 can be further improved. The second lumen 15 can also be used for liquid aspiration. During specific operations, the guide wire can be assisted in being delivered through the first lumen 13, and aspiration operations can be simultaneously performed through the second lumen 15, thereby facilitating and promoting the guide wire to penetrate through the intima of the vascular structure, bypass the diseased site, and then return to the true lumen of the blood vessel.

[0059] Specifically, the first lumen 13 and the second lumen 15 are arranged along the first direction X, and the cross-sections of both the first lumen 13 and the second lumen 15 are circular, thereby reducing the occupied space and facilitating the pushing of the catheter assembly 1 within the blood vessel.

[0060] Specifically, the proximal ends 11 of the first lumen 13 and the second lumen 15 are separated from each other, facilitating independent operation.

[0061] In some embodiments, the catheter assembly 1 further includes a third lumen 16 provided at the distal end 12. The third lumen 16 is used for the entry and exit of instruments, and the third lumen 16 and the first lumen 13 are arranged along the first direction X.

[0062] In the present application, the third lumen 16 is a short lumen for cooperating with other instruments. The instrument passes through the third lumen 16, thereby realizing the positioning of the instrument. The first lumen 13, the second lumen 15, and the third lumen 16 are all arranged along the first direction X, so that the distal end 12 of the catheter assembly 1 becomes a flat structure extending along the first direction X, and the positions of the first lumen 13, the second lumen 15, and the third lumen 16 at the distal end 12 can be accurately determined, thereby facilitating the determination of the positions for wire leading out, instrument use, or liquid suction.

[0063] As Figure 3 shown, specifically, a radiopaque and visible marker 161 is provided at the end of the third lumen 16 to facilitate positioning the end of the catheter assembly 1.

[0064] In some embodiments, the first lumen 13 is located between the second lumen 15 and the third lumen 16, and two visible markers 14 are respectively provided outside the second lumen 15 and the third lumen 16.

[0065] In the present application, the first lumen 13 is located between the second lumen 15 and the third lumen 16, and the two visible markers 14 are oppositely arranged outside the second lumen 15 and the third lumen 16. When the distal end 12 of the catheter assembly 1 is located in the intima of the blood vessel, the distal end 12 of the flat structure is parallel to the tangent of the blood vessel, and the wire is led out through the first outlet 131 or the second outlet 132 of the first lumen 13 located in the middle position, thereby realizing the return of the wire from the intima to the true lumen.

[0066] Specifically, during the actual operation, when the distal end of the catheter assembly 1 is in the intima of the blood vessel and bypasses the diseased part, by adjusting the orientation of the imaging device, the two visible markers 14 can be seen at the distal end of the catheter assembly 1. One of the first outlet 131 and the second outlet 132 faces the true lumen of the blood vessel. By controlling the wire to extend from the first lumen 13 through the first outlet 131 or the second outlet 132, the return of the wire from the intima to the true lumen of the blood vessel is realized. As Figure 3 shown, in some embodiments, the first lumen 13, the second lumen 15, and the third lumen 16 have a smoothly transitioning incision structure 17 at the end far from the proximal end 11.

[0067] In the present application, by setting the ends of the first lumen 13, the second lumen 15, and the third lumen 16 into a smoothly transitioning incision structure 17, it is convenient to push the catheter assembly 1 in the true lumen or intima of the blood vessel, and it has a certain piercing function. The orientation of the distal end 12 of the catheter assembly 1 can be controlled by the support rod 2 so that the incision structure 17 of the catheter assembly 1 pierces into the intima of the blood vessel.

[0068] In some embodiments, the catheter assembly 1 further includes an intermediate portion 18 located between the proximal end 11 and the distal end 12, and the cross-section of the intermediate portion 18 is circular or oval.

[0069] As Figure 9 shown, in one embodiment, the middle part 18 of the catheter assembly 1 has only the first lumen 13 and the second lumen 15. By adopting a flat elliptical structure, the occupied space of the catheter assembly 1 is reduced, so that there is a certain clearance space on both sides of the catheter assembly 1, and it can be better compatible with other instruments when guiding the catheter assembly 1.

[0070] As Figure 12 shown, in another embodiment, the middle part 18 of the catheter assembly 1 is of a circular structure, so that the middle part 18 will not be affected by other intravascular objects, facilitating the adjustment of the angle of the distal end 12 of the catheter assembly 1, and further facilitating the manipulation of the catheter assembly 1.

[0071] In some embodiments, the support rod 2 is of a solid structure; alternatively, a hollow through hole 21 is arranged inside the support rod 2 along the extending direction.

[0072] As Figure 13 shown, in one embodiment, the support rod 2 adopts a solid structure, which can ensure the support effect of the support rod 2 on the catheter assembly 1.

[0073] As Figure 14 shown, in another embodiment, a hollow through hole 21 is arranged inside the support rod 2. By means of the hollow through hole 21, the occupation of the inside of the catheter is reduced, facilitating the suction of liquid. Part of the liquid is conveyed in the first lumen 13 and / or the second lumen 15 of the catheter assembly 1, and another part of the liquid is conveyed through the hollow through hole 21 of the support rod 2.

[0074] Specifically, through the cooperation of the support rod 2 and the catheter assembly 1, the size of the instrument body can be made small enough (≤3.2F), so as to facilitate the use and operation of the catheter assembly 1, that is, it is compatible with the traditional anchoring balloon (≤2.0F).

[0075] In some embodiments, the wire assisting device further includes: a first joint 3 connected to the proximal end 11 of the catheter assembly 1; and a second joint 4 connected to one end of the support rod 2, and the second joint 4 is detachably connected to the first joint 3.

[0076] In this application, by connecting the first joint 3 and the second joint 4, the support rod 2 and the catheter assembly 1 are connected together, ensuring the support stability of the support rod 2 on the catheter assembly 1 and facilitating the operation. Through the first joint 3 and the second structure, it is also convenient to connect with other instruments, such as connecting with a suction device to suck liquid.

[0077] Specifically, first joints 3 are respectively arranged at the proximal ends 11 of the first lumen 13 and the second lumen 15, and the first joint 3 and the second joint 4 are standard Luer joints.

[0078] Specifically, the imaging marker 14 is made of a resin material containing radiation-impermeable metals such as tungsten, bismuth, and barium, or a radiation-impermeable metal material such as platinum, iridium, and gold; the catheter assembly 1 is a polymer or a polymer + metal reinforcement layer or a multi-layer structure; the first connector 3 and the second connector 4 are made of a hard resin material such as nylon.

[0079] In some embodiments, the first connector 3 includes a catheter seat 31 and a stress-relieving tube 32 connected to the catheter seat 31, and the stress-relieving tube 32 is connected to the proximal end 11 of the catheter assembly 1.

[0080] In this application, the reliability of connection with other instruments is ensured by the catheter seat 31, and the situation that the catheter assembly 1 is affected by a hard bend at the connection with the first connector 3 is avoided through the stress-relieving tube 32, so that the catheter assembly 1 can be protected and the operation can be carried out smoothly.

[0081] The guide wire assisting device ensures the overall pushability and anti-kink property of the catheter assembly 1 through the support rod 2. The guide wire is conveyed through the first lumen 13 of the catheter assembly 1. The imaging marker 14 at the distal end 12 of the catheter assembly 1 can show the angle of the distal end 12 in the blood vessel, and then it is selected to be exported through the first outlet 131 or the second outlet 132, so that the guide wire can bypass the occluded part in the blood vessel and re-enter the true lumen of the blood vessel, which can assist the guide wire to achieve targeted and directional puncture and improve the success rate of the operation.

[0082] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0083] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0084] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A wire guiding assist device, characterized in that, Comprising: A catheter assembly (1), including a proximally disposed proximal end (11) and a distally disposed distal end (12). The catheter assembly (1) has a first lumen (13) for a guide wire or liquid to pass through. Both ends of the first lumen (13) are located at the proximal end (11) and the distal end (12) respectively. At both ends of the distal end (12) along a first direction, there are respectively disposed radiopaque markers (14). The first lumen (13) is communicatively provided with a first outlet (131) and a second outlet (132) at the distal end (12) along a second direction. The first outlet (131) and the second outlet (132) are oppositely disposed; And A support rod (2), which can extend into the first lumen (13). The support rod (2) has elasticity and is used to support the catheter assembly (1).

2. The wire guiding assist device according to claim 1, characterized in that, A third outlet (133) is communicatively provided at the end of the first lumen (13) away from the proximal end (11).

3. The guide wire assisting device according to claim 1 or 2, characterized in that, The distal end (12) of the catheter assembly (1) is a flat structure extending along the first direction.

4. The guide wire assisting device according to claim 3, characterized in that The catheter assembly (1) further has a second lumen (15) for a guide wire or liquid to pass through. Both ends of the second lumen (15) are located at the proximal end (11) and the distal end (12) respectively. The second lumen (15) and the first lumen (13) are arranged along the first direction. The support rod (2) can extend into the second lumen (15).

5. The wire guide assisting device according to claim 4, characterized in that, The catheter assembly (1) further includes a third lumen (16) provided at the distal end (12). The third lumen (16) is for instruments to enter and exit. The third lumen (16) and the first lumen (13) are arranged along the first direction.

6. The guide wire assisting device according to claim 5, wherein, The first lumen (13) is located between the second lumen (15) and the third lumen (16). The two radiopaque markers (14) are respectively provided outside the second lumen (15) and the third lumen (16).

7. The guide wire assisting device according to claim 5, wherein, The first lumen (13), the second lumen (15) and the third lumen (16) are provided with a smoothly transitioning incision structure (17) at the end away from the proximal end (11).

8. The guide wire assisting device according to claim 1, characterized in that, The catheter assembly (1) further includes an intermediate portion (18) located between the proximal end (11) and the distal end (12). The cross-section of the intermediate portion (18) is circular or oval.

9. The guide wire assisting device according to claim 1, characterized in that, The support rod (2) is a solid structure; or, a hollow through hole (21) is provided inside the support rod (2) along the extending direction.

10. The guide wire assisting device according to claim 1, characterized in that, The guide wire assisting device further includes: A first connector (3), connected to the proximal end (11) of the catheter assembly (1); and A second connector (4), connected to one end of the support rod (2). The second connector (4) is detachably connected to the first connector (3).

Images