Interventional guide wire system

Abstract

The present disclosure relates to an interventional guidewire system including a hypotube having a hollow lumen and a core wire. Wherein two opposite ends of the hypotube are respectively marked as a near end and a far end; a bending part is arranged at the far end of the hypotube, and the bending part is bent in a natural state and is configured to deform in the extending direction of the hypotube when being subjected to external force; the core wire is configured to penetrate through the hollow inner cavity of the hypotube, the bending resistance of the core wire is larger than that of the bending part, the core wire drives the bending part to deform in the extending direction of the hypotube when extending into the bending part, and the bending part recovers to the natural state when exiting from the bending part. According to the interventional guide wire system, bending adjustment of the guide wire can be achieved in an operation through cooperation of the core wire and the bending part, the blood vessel super-selection bending capacity of the guide wire is improved, time is saved for rapid establishment of an interventional operation channel, and the exposure time of an operator and a patient under rays is shortened.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and more specifically, to an interventional guidewire system. Background Art

[0002] Interventional technology is a widely used technology in the medical field. It can be used to diagnose and treat a variety of diseases. This technology usually guides medical devices to the lesion site through an interventional guidewire, and then performs operations such as drug delivery or surgery in the blood vessel to achieve the effect of precise treatment. Currently, commonly used guidewires mainly rely on the shape of the guidewire itself and the doctor's manual precision operation to reach the lesion. Before the guidewire intervenes in the blood vessel, the doctor must rely on his own surgical experience to bend the front end of the guidewire with a needle tube, and the bending process can only be formed once. At the beginning of the operation, the degree of bending of the guidewire cannot be adjusted after the guidewire enters the blood vessel.

[0003] This type of guidewire requires the doctor to manipulate it through a twist controller during surgery, which can easily lead to the guidewire being blocked. Since the curvature of the original guidewire cannot be adjusted after entering the blood vessel, this type of guidewire requires high skills and experience from the doctor, and the doctor often needs to undergo long-term interventional training before the operation. At the same time, since drugs need to be injected to relieve spasms or the direction of the guidewire needs to be adjusted through angiography during the operation, the doctor and the patient will need to be exposed to X-rays for a long time, which will also increase the possibility of complications after the operation. Summary of the invention

[0004] In view of this, an embodiment of the present disclosure provides an interventional guidewire system to solve the technical defects existing in the prior art.

[0005] To achieve the above objectives, the present disclosure adopts the following technical solutions: The present disclosure provides an interventional guidewire system, comprising: A hypotube having a hollow inner cavity, wherein the two opposite ends of the hypotube are respectively marked as a proximal end and a distal end; a curved portion is provided at the distal end of the hypotube, the curved portion is curved in a natural state, and is configured to deform in the extending direction of the hypotube when subjected to an external force; The core wire is configured to be passed through the hollow inner cavity of the sea wave tube, wherein the bending resistance of the core wire is greater than the bending resistance of the bending portion, and when the core wire extends into the bending portion, the bending portion is driven to deform in the extension direction of the sea wave tube, and when the core wire exits the bending portion, the bending portion returns to its natural state.

[0006] In one embodiment of the present disclosure, a plurality of spaced-apart cutouts are provided on the circumferential side wall of the distal end of the hypotube to form the curved portion at the distal end of the hypotube.

[0007] In one embodiment of the present disclosure, the curved portion includes connecting portions located on opposite sides thereof, and the connecting portions are configured to extend outward from the sea wave tube; the two connecting portions are configured to limit a first area and a second area on opposite side walls of the curved portion; and the incisions are configured to be distributed in the first area and the second area.

[0008] In one embodiment of the present disclosure, the distal end of the hypotube is configured to be cut or wound into the spring-shaped curved portion.

[0009] In one embodiment of the present disclosure, a spacer is provided in the curved portion, and the spacer is configured to extend from the distal end of the curved portion toward the proximal end thereof; the spacer is configured to limit the bending deformation of the curved portion toward the end surfaces on opposite sides of the spacer.

[0010] In one embodiment of the present disclosure, the core wire includes a first core wire and a second core wire located on opposite sides of the spacer, and the free ends of the first core wire and the second core wire are constructed to extend from the distal end of the spacer toward the proximal end of the sea wave tube respectively.

[0011] In one embodiment of the present disclosure, an elastic element is provided in the sea wave tube and / or the bending portion, one end of the elastic element is configured to be connected to the inner wall of the sea wave tube or the bending portion, and the other end is configured to be connected to the core wire; the core wire is configured to pull the elastic element to deform during the retraction process, and after the external force is removed, the core wire extends into the bending portion under the elastic restoring force of the elastic element.

[0012] In one embodiment of the present disclosure, a threaded rod is connected to the proximal end of the hypotube, and further comprises a threaded tube connected to the core wire, wherein the threaded tube is configured to be threadedly connected to the threaded rod.

[0013] In one embodiment of the present disclosure, the core wire includes a first core wire and a second core wire, one end of the first core wire and the second core wire are respectively connected to the distal end of the bending portion, and the other end are respectively configured to extend toward the proximal end of the sea wave tube.

[0014] In one embodiment of the present disclosure, a rotating wheel is provided at the proximal end of the sea wave tube, and the proximal ends of the first core wire and the second core wire are connected together and are constructed to be wound around the rotating wheel; it also includes a handle sleeved on the sea wave tube, and the handle is provided with an exposed operating hand wheel constructed to engage with the rotating wheel; the operating hand wheel is constructed to drive the first core wire and the second core wire to withdraw or extend in opposite directions through the rotating wheel during rotation.

[0015] The present invention provides an interventional guidewire system, which can realize guidewire bending during surgery through the cooperation of a core wire and a bending portion, thereby improving the guidewire's ability to super-select curved blood vessels, saving time for quickly establishing an interventional surgical channel, and reducing the exposure time of the operator and the patient to radiation.

[0016] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an interventional guidewire system provided by an embodiment of the present disclosure; Figure 2 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Figure 3 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Figure 4 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Figure 5 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Figure 6 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Figure 7 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Figure 8 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Fig. 9 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Fig.10 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Fig.11 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Fig.12 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Fig.13 is a structural schematic diagram of an interventional guidewire system provided by another embodiment of the present disclosure; Fig.14 It is a structural schematic diagram of an interventional guidewire system provided in another embodiment of the present disclosure.

[0018] 1-hypotube; 11-bending part; 12-incision; 13-connecting part; 2-core wire; 21-first core wire; 22-second core wire; 3-spacer; 4-elastic element; 5-threaded rod; 6-threaded tube; 7-rotating wheel; 8-operating hand wheel; 9-protective tube; 10-handle. DETAILED DESCRIPTION

[0019] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0020] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0021] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0022] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0023] The specific embodiments of the present disclosure are described below in conjunction with the accompanying drawings.

[0024] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0025] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0026] In this document, “equal”, “same”, etc. are not strictly limited in mathematical and / or geometric senses, but also include errors that can be understood by those skilled in the art and allowed by manufacturing or use.

[0027] The present disclosure provides an interventional guidewire system, comprising a hypotube with a hollow inner cavity and a core wire. The two opposite ends of the hypotube are respectively recorded as a proximal end and a distal end; a curved portion is provided at the distal end of the hypotube, the curved portion is curved in a natural state, and is configured to deform in the extension direction of the hypotube when subjected to an external force; the core wire is configured to pass through the hollow inner cavity of the hypotube, wherein the bending resistance of the core wire is greater than the bending resistance of the curved portion, and when the core wire is extended into the curved portion, the curved portion is driven to deform in the extension direction of the hypotube, and when the curved portion is withdrawn, the curved portion returns to its natural state.

[0028] The interventional guidewire system provided by the present disclosure can realize guidewire bending during surgery through the cooperation of the core wire and the bending part, improve the ability of the guidewire to super-select curved blood vessels, save time for quickly establishing an interventional surgical channel, and reduce the exposure time of the operator and the patient to radiation.

[0029] For ease of understanding, refer to Figures 1 to 14 , the specific structure and working principle of the interventional guidewire system of the present invention are explained in detail in combination with an embodiment.

[0030] like Figure 1 As shown, the interventional guidewire system in this embodiment includes a hypotube 1 having a hollow inner cavity and a core wire 2.

[0031] A hypotube 1 having a hollow inner cavity, wherein the two opposite ends of the hypotube 1 are respectively denoted as a proximal end and a distal end; a curved portion 11 is provided at the distal end of the hypotube 1, and the curved portion 11 is curved in a natural state, and is configured to deform in the extension direction of the hypotube 1 when subjected to an external force. The core wire 2 is configured to be inserted into the hollow inner cavity of the hypotube 1, wherein the bending resistance of the core wire 2 is greater than the bending resistance of the curved portion 11, and when the core wire 2 extends into the curved portion 11, the curved portion 11 is driven to deform in the extension direction of the hypotube 1, and when the core wire 2 exits the curved portion 11, the curved portion 11 returns to its natural state.

[0032] Specifically, the sea wave tube 1 in this embodiment has two opposite ends, wherein the end of the sea wave tube 1 away from the operation point is the distal end. For example, during vascular intervention surgery, the distal end of the sea wave tube 1 is the end that goes deep into the patient's body, away from the part controlled by the doctor's hand, and directly contacts the lesion area. Correspondingly, the proximal end refers to the end of the sea wave tube 1 close to the operation point. In other words, this part is more easily controlled directly by the doctor, usually located outside the body or near the entrance to the body surface. A curved portion 11 is provided at the distal end of the sea wave tube 1. The curved portion 11 is curved in a natural state, and deforms in the extension direction of the sea wave tube 1 when subjected to external force, so as to enter the curved blood vessel.

[0033] The hypotube 1 has a hollow inner cavity, in which a core wire 2 is inserted, and the core wire 2 is used to control the bending deformation of the curved portion 11. In this embodiment, the core wire 2 is set to a horizontal linear structure. Since the bending resistance of the core wire 2 is greater than the bending resistance of the curved portion 11, when the core wire 2 extends into the curved portion 11, the curved portion 11 can be driven to deform in the extension direction of the hypotube 1, and when the core wire 2 exits the curved portion 11, the curved portion 11 can be restored to a natural state.

[0034] In practical applications, the curved hypotube 1 can be used to reach a difficult-to-reach blood vessel location first, and then the core wire 2 can be inserted to help the hypotube 1 pass through a narrow or tortuous path. Once the target location is reached, the core wire 2 can be removed to allow the hypotube 1 to restore its softer and more compliant curved shape, thereby reducing damage to the blood vessel wall. Through the cooperation of the core wire 2 and the curved portion 11, the guidewire can be adjusted during surgery, improving the ability of the guidewire to superselect curved blood vessels, saving time for quickly establishing an interventional surgical channel, and reducing the exposure time of the operator and the patient to radiation.

[0035] like Figure 2 As shown, in one embodiment of the present disclosure, a plurality of spaced apart cutouts 12 are provided on the circumferential side wall at the distal end of the hypotube 1 to form a curved portion 11 at the distal end of the hypotube 1 .

[0036] Specifically, the distal end of the hypotube 1 is set as a nickel-titanium alloy tube, and a plurality of spaced incisions 12 are cut on the circumferential side wall of the distal end of the hypotube 1 by a laser cutting machine. These incisions 12 make the curved portion 11 softer and easier to deform, so that it can maintain a certain curvature in a natural state, so as to move more easily in the complex structure inside the human body. When the core wire 2 passes through the curved portion 11 formed by these incisions 12, due to its high degree of resistance to bending, it can help the hypotube 1 overcome resistance and move in a straight direction. When the core wire 2 withdraws from the curved portion 11, the curved portion 11 returns to its original curved shape through its own curvature.

[0037] like Figure 2 As shown, in one embodiment of the present disclosure, the curved portion 11 includes connecting portions 13 located on opposite sides thereof, and the connecting portions 13 are configured to extend outward from the sea wave tube 1; the two connecting portions 13 are configured to limit a first area and a second area on the opposite side walls of the curved portion 11; and the incisions 12 are configured to be distributed in the first area and the second area.

[0038] Specifically, connecting parts 13 are further provided on opposite sides of the curved portion 11, and the connecting parts 13 limit the first area and the second area on the side walls on opposite sides of the curved portion 11, and the incisions 12 are distributed in the first area and the second area. In addition, the connecting parts 13 extending outward from the hypotube 1 can provide support force, which helps to maintain the overall stability and structural strength of the hypotube 1, especially during the deformation of the curved portion 11, which can enhance the stability and controllability of the curved portion 11 during the deformation process, making it easier to guide the hypotube 1 to the desired position during operation, especially when the hypotube 1 passes through a narrow or fragile structure, which can reduce the pressure and damage to the surrounding soft tissues.

[0039] like Figures 3 to 5 As shown, in one embodiment of the present disclosure, the distal end of the hypotube 1 is configured to be cut or wound into a spring-shaped curved portion 11 .

[0040] Specifically, the distal end of the hypotube 1 is cut or wound into a spirally wound spring-like structure, namely the curved portion 11. The curved portion 11 is set as a spring-like structure, which can increase the flexibility and compliance of the distal end of the hypotube 1, and can move better in a complex structure. The curved portion 11 is set as a spring-like structure, so that the curved portion 11 has better elastic memory, and when the external force disappears, the curved portion 11 can more quickly return to a naturally curved state.

[0041] like Figures 3 to 5 As shown, in one embodiment of the present disclosure, a spacer 3 is provided in the curved portion 11, and the spacer 3 is constructed to extend from the distal end of the curved portion 11 toward its proximal end; the spacer 3 is constructed to limit the bending deformation of the curved portion 11 toward the end faces on both sides of the spacer 3.

[0042] Specifically, a spacer 3 is provided in the curved portion 11, so that the curved portion 11 cannot bend in any direction at will, and will be subject to certain restrictions when bending and deforming, and can only bend along a specified direction. By limiting the bending direction, the doctor can more accurately control the direction of the sea wave tube 1, and make the sea wave tube 1 less prone to unnecessary deformation when encountering resistance, thereby maintaining better linear propulsion capability. In addition, the presence of the spacer 3 can prevent the curved portion 11 from excessive bending, thereby protecting the sea wave tube 1 from damage and reducing pressure and damage to surrounding tissues. By providing the spacer 3 in the curved portion 11, the structural characteristics and functionality of the distal end of the sea wave tube 1 can be further enhanced, and by limiting the bending deformation of the curved portion 11 toward the end faces on both sides of the spacer 3, better control and stability can be provided.

[0043] like Figures 3 to 5As shown, in one embodiment of the present disclosure, the core wire 2 includes a first core wire 21 and a second core wire 22 located on opposite sides of the spacer 3, and the free ends of the first core wire 21 and the second core wire 22 are constructed to extend from the distal end of the spacer 3 toward the proximal end of the sea wave tube 1, respectively.

[0044] Specifically, a first core wire 21 and a second core wire 22 are arranged on opposite sides of the spacer 3, wherein the first core wire 21 and the second core wire 22 may be two parts of the same core wire 2, or may be two independent core wires 2. When the first core wire 21 and the second core wire 22 are the same core wire 2, the connecting portion 13 of the first core wire 21 and the second core wire 22 is respectively connected to the end of the distal end of the hypotube 1 and the end of the distal end of the spacer 3. When the first core wire 21 and the second core wire 22 are two independent core wires 2, the distal ends of the first core wire 21 and the second core wire 22 are respectively connected to the end of the distal end of the hypotube 1, and the distal end of the spacer 3 is also connected to the end of the distal end of the hypotube 1. In the above two cases, the free ends of the first core wire 21 and the second core wire 22 are both constructed to extend from the distal end of the spacer 3 to the proximal end of the hypotube 1. By controlling the first core wire 21 and the second core wire 22 respectively, the bending portion 11 can be controlled in both directions, and the bending direction and degree of the bending portion 11 can be adjusted as needed, so as to better adapt to the complex structural path. In practical applications, the first core wire 21 and the second core wire 22 can be operated separately or simultaneously to achieve the required bending effect. In addition, the setting of the double core wire 2 structure can reduce the stress concentration phenomenon generated by a single core wire 2 in the bending portion 11, thereby reducing the risk of damage to the sea wave tube 1.

[0045] like Figure 6 to Figure 7 As shown, in one embodiment of the present disclosure, an elastic element 4 is provided in the sea wave tube 1 and / or the curved portion 11, one end of the elastic element 4 is configured to be connected to the inner wall of the sea wave tube 1 or the curved portion 11, and the other end is configured to be connected to the core wire 2; the core wire 2 is configured to pull the elastic element 4 to deform during the retraction process, and after the external force is removed, the core wire 2 extends into the curved portion 11 under the elastic restoring force of the elastic element 4.

[0046] Specifically, one end of the elastic element 4 is connected to the inner wall of the sea wave tube 1 or the curved portion 11, and the other end is connected to the core wire 2. When the core wire 2 moves, the elastic element 4 will deform with the movement of the core wire 2. When the core wire 2 is withdrawn, the elastic element 4 is stretched and deformed under the action of the tension; when the external force is withdrawn, that is, when the core wire 2 is in a natural state, the restoring force of the elastic element 4 pushes the core wire 2 into the curved portion 11. By providing the elastic element 4, the core wire 2 can be automatically reset after withdrawal, reducing the need for manual reset and improving operating efficiency. In addition, the restoring force of the elastic element 4 can provide stable support to ensure that the core wire 2 can quickly and accurately return to the curved portion 11 along the original path.

[0047] In a specific application, the core wire 2 is first inserted into the hollow inner cavity of the sea wave tube 1, and one end of the elastic element 4 is fixed to the inner wall of the sea wave tube 1 or the curved portion 11, and the other end is connected to the core wire 2. The core wire 2 is pushed forward to pass through the curved portion 11, and the elastic element 4 is in a natural state. After that, the core wire 2 is withdrawn, and the elastic element 4 is stretched and deformed. The curved portion 11 returns to a natural bending state due to the removal of the external force of the core wire 2. When the external force is removed, the elastic element 4 returns to its original state, pushing the core wire 2 to automatically return to the curved portion 11, and the curved portion 11 returns to a straight state.

[0048] By arranging an elastic element 4 in the sea wave tube 1 and / or the bending part 11, the core wire 2 can pull the elastic element 4 to deform during the withdrawal process, and after the external force is removed, the core wire 2 can re-extend into the bending part 11 under the action of the elastic restoring force of the elastic element 4.

[0049] like Figure 8 As shown, in one embodiment of the present disclosure, a threaded rod 5 is connected to the proximal end of the hypotube 1 , and also includes a threaded tube 6 connected to the core wire 2 , and the threaded tube 6 is constructed to be threadedly connected to the threaded rod 5 .

[0050] Specifically, in order to facilitate operation, a threaded rod 5 and a threaded tube 6 are also provided at the proximal end of the sea wave tube 1. Among them, the threaded rod 5 is installed at the proximal end of the sea wave tube 1 to provide an external interface so that the core wire 2 can be connected thereto through the threaded tube 6. The threaded tube 6 is connected to the core wire 2 and is threadedly connected to the threaded rod 5. By rotating the threaded tube 6, the position of the core wire 2 in the sea wave tube 1 can be accurately controlled. When the threaded tube 6 is rotated, the core wire 2 will be pushed forward or retracted, thereby affecting the shape of the curved portion 11. In addition, a protective tube 9 is provided at the proximal end of the sea wave tube 1, and the protective tube 9 is sleeved on the outside of the sea wave tube 1 and extends to the outside of the threaded tube 6. Through the provision of the protective tube, the connection between the threaded tube 6 and the sea wave tube 1 can be made tighter, thereby improving the stability of the overall system.

[0051] The threaded connection mechanism provides a firm mechanical connection, ensuring that the core wire 2 will not accidentally slide or loosen during the operation, improving the reliability of the operation, and making it simple to advance and withdraw the core wire 2, which can be controlled by simply rotating the threaded tube 6, reducing the complexity of the operation. In addition, due to the precision of the threaded connection mechanism, consistent results can be obtained each time the operation is performed, which is particularly important for surgeries that require repeated operations.

[0052] In actual application, the threaded tube 6 is first connected to the core wire 2, and it is ensured that the threaded tube 6 is aligned with the threaded rod 5 at the proximal end of the sea wave tube 1. Then the threaded tube 6 is rotated to make it tightly combined with the threaded rod 5. By rotating the threaded tube 6, the advancement or withdrawal distance of the core wire 2 is controlled. When the core wire 2 is advanced, the curved portion 11 will be deformed under the action of external force; after the external force is removed, the restoring force of the elastic element 4 will push the core wire 2 to automatically return to the curved portion 11, and the curved portion 11 will restore its natural bending state.

[0053] like Figures 9 to 11 As shown, in one embodiment of the present disclosure, the core wire 2 includes a first core wire 21 and a second core wire 22, one end of the first core wire 21 and the second core wire 22 are respectively configured to be connected to the distal end of the bending portion 11, and the other end are respectively configured to extend toward the proximal end of the sea wave tube 1.

[0054] Specifically, one end of the first core wire 21 and the second core wire 22 are respectively connected to the distal end of the curved portion 11, and the other ends extend toward the proximal end of the sea wave tube 1. The first core wire 21 and the second core wire 22 can be one core wire 2 divided into two parts, or two independent core wires 2. By controlling the first core wire 21 and the second core wire 22 separately, bidirectional control of the curved portion 11 can be achieved, and the bending direction and degree of the curved portion 11 can be adjusted as needed to better adapt to complex structural paths. The two core wires 2 can be operated separately or simultaneously as needed to achieve the desired bending effect. By dispersing stress, the double core wire 2 setting can reduce the stress concentration phenomenon generated by the single core wire 2 in the curved portion 11, thereby reducing the risk of damage to the sea wave tube 1.

[0055] like Figure 12 to Figure 14 In one embodiment of the present disclosure, a rotating wheel 7 is provided at the proximal end of the hypotube 1, and the proximal ends of the first core wire 21 and the second core wire 22 are connected together and are configured to be wound around the rotating wheel 7; a handle 10 sleeved on the hypotube 1 is also included, and a bare operating hand wheel 8 configured to mesh with the rotating wheel 7 is provided on the handle 10; the operating hand wheel 8 is configured to drive the first core wire 21 and the second core wire 22 to withdraw or extend in opposite directions through the rotating wheel 7 during rotation.

[0056] Specifically, a rotating wheel 7 is provided at the proximal end of the hypotube 1, and the proximal ends of the first core wire 21 and the second core wire 22 are connected together and wound on the rotating wheel 7. It also includes a handle 10 sleeved on the hypotube 1, and a bare operating hand wheel 8 is provided on the handle 10, and the operating hand wheel 8 is engaged with the rotating wheel 7. The rotation of the operating hand wheel 8 drives the first core wire 21 and the second core wire 22 to withdraw or extend in opposite directions through the rotating wheel 7. In practical applications, the operating hand wheel 8 on the rotating handle 10 is driven to rotate the rotating wheel 7 engaged therewith. The rotation of the rotating wheel 7 causes the first core wire 21 and the second core wire 22 wound thereon to produce corresponding movements, and the first core wire 21 and the second core wire 22 will withdraw or extend in opposite directions. For example, when the operating hand wheel 8 rotates clockwise, the first core wire 21 may withdraw, while the second core wire 22 extends; and vice versa. By rotating the operating hand wheel 8, bidirectional control of the first core wire 21 and the second core wire 22 can be achieved, so that the bending portion 11 can be adjusted in two opposite directions, thereby achieving more accurate positioning of the hypotube 1. The operating hand wheel 8 on the handle 10 allows the doctor to operate with one hand, which simplifies the operation steps during the operation and improves the efficiency of the operation. The linkage mechanism of the rotating wheel 7 and the operating hand wheel 8 ensures the stability of the core wire 2 during the movement and reduces the error caused by manual operation.

[0057] The present invention provides an interventional guidewire system, which can realize guidewire bending during surgery through the cooperation of a core wire and a bending portion, thereby improving the guidewire's ability to super-select curved blood vessels, saving time for quickly establishing an interventional surgical channel, and reducing the exposure time of the operator and the patient to radiation.

[0058] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited by the described action sequence, because according to the present disclosure, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0059] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0060] The preferred embodiments of the present disclosure disclosed above are only used to help explain the present disclosure. The optional embodiments do not describe all the details in detail, nor do they limit the disclosure to only the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the present disclosure. The present disclosure selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present disclosure, so that those skilled in the art can well understand and use the present disclosure. The present disclosure is limited only by the claims and their full scope and equivalents.

Claims

1. An interventional guidewire system, characterized in that: include: A hypotube (1) having a hollow inner cavity, wherein the two opposite ends of the hypotube (1) are respectively denoted as a proximal end and a distal end; a curved portion (11) is provided at the distal end of the hypotube (1), wherein the curved portion (11) is curved in a natural state and is configured to deform in the extension direction of the hypotube (1) when subjected to an external force; A core wire (2), the core wire (2) being configured to be inserted into the hollow inner cavity of the hypotube (1), wherein the bending resistance of the core wire (2) is greater than the bending resistance of the curved portion (11), and when the core wire (2) extends into the curved portion (11), it drives the curved portion (11) to deform in the extension direction of the hypotube (1), and when the core wire (2) exits the curved portion (11), the curved portion (11) returns to its natural state.

2. The interventional guidewire system according to claim 1, characterized in that: A plurality of spaced-apart cutouts (12) are provided on the circumferential side wall at the distal end of the hypotube (1) to form the curved portion (11) at the distal end of the hypotube (1).

3. The interventional guidewire system according to claim 2, characterized in that: The curved portion (11) comprises connecting portions (13) located on two opposite sides thereof, the connecting portions (13) being configured to extend outward from the hypotube (1); the two connecting portions (13) being configured to limit a first area and a second area on two opposite side walls of the curved portion (11); and the cutouts (12) being configured to be distributed in the first area and the second area.

4. The interventional guidewire system according to claim 1, characterized in that: The distal end of the hypotube (1) is configured to be cut or wound into the spring-shaped curved portion (11).

5. The interventional guidewire system according to claim 4, characterized in that: A spacer (3) is arranged in the curved portion (11), and the spacer (3) is configured to extend from the distal end of the curved portion (11) toward the proximal end thereof; the spacer (3) is configured to limit the bending deformation of the curved portion (11) toward the end surfaces on opposite sides of the spacer (3).

6. The interventional guidewire system according to claim 4, characterized in that: The core wire (2) comprises a first core wire (21) and a second core wire (22) located on opposite sides of the spacer (3); the free ends of the first core wire (21) and the second core wire (22) are respectively configured to extend from the distal end of the spacer (3) towards the proximal end of the hypotube (1).

7. The interventional guidewire system according to claim 1, characterized in that: An elastic element (4) is arranged in the hypotube (1) and / or the curved portion (11); one end of the elastic element (4) is configured to be connected to the inner wall of the hypotube (1) or the curved portion (11), and the other end is configured to be connected to the core wire (2); the core wire (2) is configured to pull the elastic element (4) to deform during the withdrawal process, and after the external force is removed, the core wire (2) extends into the curved portion (11) under the elastic restoring force of the elastic element (4).

8. The interventional guidewire system according to claim 1, characterized in that: A threaded rod (5) is connected to the proximal end of the hypotube (1), and the hypotube (1) further comprises a threaded tube (6) connected to the core wire (2), wherein the threaded tube (6) is configured to be threadedly connected to the threaded rod (5).

9. The interventional guidewire system according to claim 1, characterized in that: The core wire (2) comprises a first core wire (21) and a second core wire (22); one end of the first core wire (21) and the second core wire (22) are respectively connected to the distal end of the curved portion (11), and the other end of the first core wire (21) and the second core wire (22) are respectively extended towards the proximal end of the hypotube (1).

10. The interventional guidewire system according to claim 9, characterized in that: A rotating wheel (7) is arranged at the proximal end of the hypotube (1), and the proximal ends of the first core wire (21) and the second core wire (22) are connected together and are configured to be wound around the rotating wheel (7); the hypotube (1) further comprises a handle (10) sleeved on the hypotube (1), and the handle (10) is provided with an exposed operating hand wheel (8) configured to mesh with the rotating wheel (7); the operating hand wheel (8) is configured to drive the first core wire (21) and the second core wire (22) to withdraw or extend in opposite directions through the rotating wheel (7) during rotation.

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