Adjustable bolt breaker

Abstract

The present invention discloses an adjustable thrombus breaker, which belongs to the technical field of interventional treatment instruments, and comprises a guide wire tube and a guide wire, wherein a guide wire opening is provided on the tube wall of the guide wire tube, and the guide wire opening is located near the distal end of the guide wire tube; the guide wire is arranged inside the guide wire tube, and the distal end of the guide wire is connected to the distal end of the guide wire tube, and the guide wire can pass through the guide wire opening in a curved shape, and the guide wire passing through the guide wire opening forms a thrombus breaker structure. The present invention enables the guide wire to pass through the guide wire opening provided on the guide wire tube, and forms a thrombus breaker structure by using the guide wire passing through the guide wire opening, and the outer diameter of the thrombus breaker structure can be adjusted by the guide wire, and has the advantages of simple structure, high flexibility and high thrombus breaker efficiency, and can adapt to complex vascular structures and suction catheters with smaller diameters.

Description

Technical Field

[0001] The invention relates to the technical field of interventional treatment instruments, and in particular to an adjustable thrombus breaker. Background Art

[0002] Peripheral vascular disease, especially arterial and venous thrombosis, has always been an important challenge in clinical treatment. Such diseases not only cause pain, swelling and functional impairment in patients, but can even be life-threatening in severe cases. Thrombosis can block blood flow, leading to tissue ischemia and organ damage. Therefore, effective thrombus removal is the key to treating these diseases.

[0003] Traditional thrombus removal methods mainly include drug therapy and open surgery. However, drug therapy often has limited effects and carries the risk of complications such as bleeding; while open surgery is traumatic, slow to recover, and has a high incidence of complications. With the continuous advancement of medical technology, interventional therapy, as a minimally invasive and efficient treatment method, has gradually become an important means of treating peripheral vascular diseases.

[0004] In interventional therapy, thrombus separators, as an innovative treatment tool, provide doctors with more precise and efficient treatment methods. Thrombus separators usually adopt a unique basket design, which can efficiently and directionally attract and cut large-load thrombi, thereby improving the efficiency of thrombus removal. At the same time, the materials of the separators are also carefully selected to ensure their stability and safety during use.

[0005] However, although the existing thrombus separators have achieved certain results in thrombus removal, there are still some problems and limitations. First, some suction catheters sold on the market are not equipped with thrombus crushers. Once the thrombus blocks the suction catheter, the catheter can only be withdrawn from the body for manual dredging, which not only increases the number of times the catheter enters the human body and the risk of infection, but also reduces the treatment efficiency. Secondly, the existing thrombus crushers generally have problems such as high cost, low flexibility, and low thrombus crushing efficiency. For example, some thrombus crushers use complex processes and materials, resulting in high costs; at the same time, the outer diameter of the thrombus crusher is fixed and cannot be adjusted accordingly according to the thrombus and vascular structure, which limits its scope of application; in addition, the specifications of the thrombus crusher are small and the axial length is short, resulting in low thrombus crushing efficiency. Finally, the existing thrombus crushers still have limitations. They are not suitable for certain special types of emboli or complex vascular structures, and cannot achieve ideal treatment effects.

[0006] In addition, existing thrombus breakers are often unable to adapt to suction catheters with smaller diameters, which not only increases the difficulty of operation but also may increase the risk of damaging blood vessels.

[0007] Therefore, it is particularly important to develop a new thrombus separator that can overcome the defects of the existing technology, improve the efficiency of thrombus removal, and reduce the cost and risk of treatment. Summary of the invention

[0008] The purpose of the present invention is to provide an adjustable thrombus crusher to solve the problems existing in the above-mentioned prior art, so that the guide wire can pass through the guide wire port provided on the guide wire tube, and the guide wire passing through the guide wire port can be used to form a thrombus crushing structure. The outer diameter of the thrombus crushing structure can be adjusted by the guide wire. It has the advantages of simple structure, high flexibility and high thrombus crushing efficiency, and can adapt to complex vascular structures and suction catheters with smaller diameters.

[0009] To achieve the above object, the present invention provides the following solutions:

[0010] The present invention provides an adjustable thrombus breaker, comprising a guide wire tube and a guide wire, wherein a guide wire opening is provided on the tube wall of the guide wire tube, and the guide wire opening is located near the distal end of the guide wire tube; the guide wire is inserted into the guide wire tube, and the distal end of the guide wire is connected to the distal end of the guide wire tube, and the guide wire can pass through the guide wire opening in a curved shape, and the guide wire passing through the guide wire opening forms a thrombus breaker structure.

[0011] In one embodiment, the plug-breaking structure is a curved structure of the guide wire that is pre-heat-formed, or a curved structure formed by pushing.

[0012] In one embodiment, a round cap is further included, wherein the distal end of the guide wire is connected to the middle of the proximal end of the round cap, and the outer periphery of the proximal end of the round cap is connected to the distal end of the guide wire tube.

[0013] In one embodiment, the length direction of the wire guide opening is parallel to the axial direction of the wire guide tube, and the wire guide opening is distributed along the circumference of the wire guide tube.

[0014] In one embodiment, the length direction of the wire guide port forms an angle with the axial direction of the wire guide tube, a limiting ring is provided on the inner diameter side of the wire guide tube, the axial direction of the limiting ring faces the length direction of the wire guide port, and the guide wire is inserted into the limiting ring.

[0015] In one embodiment, a developing wire is further included, and the developing wire is wound around the guide wire at the plug-breaking structure.

[0016] In one embodiment, a notch is provided on the guide wire tube, and the notch is located in the proximal direction of the guide wire opening.

[0017] In one embodiment, a heat shrink tube is further included, and the heat shrink tube is sleeved on the outer diameter side of the wire guide tube at the notch.

[0018] In one embodiment, the wire guide tube is provided with a sea wave section, and the sea wave section includes a circular ring and connecting columns connected between the circular rings, and the connecting columns on both sides of the same circular ring are staggered.

[0019] In one embodiment, the guide wire further comprises a torque controller connected to the proximal end of the guide wire.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention has a guide wire opening on the guide wire tube, and the guide wire is inserted into the guide wire tube. By passing the guide wire through the guide wire opening, the guide wire passing through the guide wire opening can be used to form a thrombus-breaking structure. By retracting and releasing the guide wire, the size of the guide wire passing through the guide wire opening can be adjusted. Therefore, the outer diameter of the thrombus-breaking structure can be adjusted by the guide wire. The invention has the advantages of simple structure, high flexibility and high thrombus-breaking efficiency, and can adapt to complex blood vessel structures and suction catheters with smaller diameters.

[0022] The present invention can provide an adjustable thrombus fragmentor with lower cost, higher flexibility, better thrombus fragmentation efficiency, wider application range, and adaptability to suction catheters with smaller diameters. Through optimized design and innovative processes, the present invention aims to improve the efficiency and safety of thrombus removal and bring better treatment effects and quality of life to patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the overall structure of an adjustable plug breaker in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Main view;

[0026] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0028] Figure 5 This is a schematic diagram of the connection between the round cap and the guide wire in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the wire guide port in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the use process of the adjustable thrombus breaker in combination with the suction catheter in an embodiment of the present invention;

[0031] Among them, 1. wire guide tube; 2. guide wire; 3. wire guide port; 4. developing wire; 5. heat shrink tube; 6. notch; 7. sea wave section; 71. circular ring; 72. connecting column; 8. twist controller; 9. limit ring; 10. round cap. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide an adjustable thrombus crusher to solve the problems existing in the prior art, so that a guide wire can pass through a guide wire port provided on a guide wire tube, and a thrombus crushing structure is formed by using the guide wire passing through the guide wire port. The outer diameter of the thrombus crushing structure can be adjusted by the guide wire. It has the advantages of simple structure, high flexibility and high thrombus crushing efficiency, and can adapt to complex vascular structures and suction catheters with smaller diameters.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 to Figure 7As shown, the present invention provides an adjustable thrombus breaker, which can also be called a thrombus separator, which can separate and remove thrombi in blood vessels, including a guide wire tube 1 and a guide wire 2. The guide wire tube 1 has a relatively large rigidity and can be a metal tube or a plastic tube. The guide wire 2 has a relatively small rigidity due to its thin diameter. The guide wire tube 1 can be used to carry the guide wire 2 to a designated position to clear the thrombus. It should be noted that the proximal end mentioned in the text refers to the end close to the operator, and the distal end mentioned in the text refers to the end away from the operator, that is, close to the patient. When making the guide wire tube 1 and the guide wire 2, the guide wire tube 1 can use 304 stainless steel and other metals as raw materials, and the guide wire 2 can use nickel-titanium alloy and other memory alloy materials. A guide wire opening 3 is opened on the tube wall of the guide wire tube 1. The guide wire opening 3 is located near the distal end of the guide wire tube 1. The width of the guide wire opening 3 should be greater than the diameter of the guide wire 2 so that the guide wire 2 can be smoothly passed through the guide wire opening 3. The guide wire 2 is inserted into the guide wire tube 1 and can move freely in the axial direction inside the guide wire tube 1, that is, the inner diameter of the guide wire tube 1 should be larger than the diameter of the guide wire 2. The distal end of the guide wire 2 is connected to the distal end of the guide wire tube 1. It should be noted here that the guide wire 2 can be directly connected to the guide wire tube 1, or it can be connected to other structures (such as round cap 10) at the distal end of the guide wire tube 1. The connection can be made by welding or bonding. The proximal end of the guide wire 2 is located outside the guide wire tube 1, and the rotation or axial movement of the guide wire 2 can be controlled by using devices such as a torque controller 8 and a gripper. The guide wire 2 can pass through the guide wire port 3 in a curved shape, and the guide wire 2 passing through the guide wire port 3 forms a broken plug structure. In fact, the number of guide wires 2 can be one or more. When multiple guide wires 2 are provided, different guide wires 2 can be controlled separately. Since the guidewire 2 is deformed, the guidewire 2 can be completely accommodated in the guidewire tube 1, thereby reducing the diameter of the guidewire tube 1, adapting to suction catheters with smaller diameters, and thus adapting to a wider range of working environments. Since the outer diameter of the guidewire 2 can be adjusted, it can be adjusted accordingly according to the thrombus and vascular structure, thereby adapting to blood vessels with different anatomical structures. Under the control of the proximal end of the guidewire 2, the size of the thrombus-breaking structure, that is, the size (length) of the guidewire 2 passing through the guidewire port 3 can be adjusted to be able to change the outer diameter of the thrombus-breaking structure to adapt to different blood vessel shapes.

[0036] The present invention is provided with a guide wire port 3 on the guide wire tube 1, and the guide wire 2 is inserted into the guide wire tube 1. By passing the guide wire 2 through the guide wire port 3, the guide wire 2 passing through the guide wire port 3 can be used to form a thrombus-breaking structure. By retracting and releasing the guide wire 2, the size of the guide wire 2 passing through the guide wire port 3 can be adjusted, so that the outer diameter of the thrombus-breaking structure can be adjusted by the guide wire 2. It has the advantages of simple structure, high flexibility and high thrombus-breaking efficiency, and can adapt to complex vascular structures and suction catheters with smaller diameters. In summary, the present invention can provide an adjustable thrombus-breaking device with lower cost, higher flexibility, better thrombus-breaking efficiency, wider application range, and can adapt to suction catheters with smaller diameters. Through optimized design and innovative processes, the efficiency and safety of thrombus removal can be improved, bringing better treatment effects and quality of life to patients.

[0037] In addition, the guide wire tube 1 can move back and forth in the suction catheter, so that when the suction catheter is blocked, the suction catheter can be unblocked directly by using the adjustable thrombus breaker without withdrawing the catheter from the human body.

[0038] In one embodiment, the thrombus-breaking structure is a curved structure pre-heat-set by the guide wire 2. In this case, the guide wire 2 can be made of memory alloy. In the natural state, the guide wire 2 can partially restore the shape of the curved structure, so that it can pass through the guide wire port 3 to form a thrombus-breaking structure. When in use, the guide wire 2 is first straightened, the adjustable thrombus-breaking device is delivered to the lesion position, the guide wire 2 is loosened, the guide wire 2 passes through the guide wire port 3, and the adjustable thrombus-breaking device is rotated to break up the thrombus. Alternatively, the guide wire 2 is made of a bendable and deformable material, such as a straightened nickel-titanium wire or a stainless steel wire, which is in a non-extended state in the natural state. If the guide wire 2 is to be extended, the guide wire 2 at the proximal end of the guide wire tube 1 can be pushed forward. In other words, the guide wire 2 is pushed to form a curved structure, and the thrombus-breaking structure is formed after passing through the guide wire port 3.

[0039] In one embodiment, if Figure 1~Figure 3 , Figure 5 and Figure 6 As shown, a round cap 10 is also included. The round cap 10 is arranged at the distal end of the guide wire tube 1. The round cap 10 has a spherical or near-spherical structure, which can effectively avoid damaging the blood vessel when advancing into the blood vessel. The distal end of the guide wire 2 is connected (for example, welded) to the middle of the proximal end of the round cap 10, and the periphery of the proximal end of the round cap 10 is connected to the distal end of the guide wire tube 1, so that the round cap 10 can cover the distal end of the guide wire tube 1 and block the distal end of the guide wire 2. Therefore, the round cap 10 can also prevent the guide wire 2 from causing damage to the blood vessel.

[0040] In one embodiment, if Figure 3As shown, the length direction of the wire guide opening 3 is parallel to the axial direction of the wire guide tube 1. At this time, the direction of the guide wire 2 in the wire guide tube 1 is consistent with the direction of the wire guide opening 3. The wire guide openings 3 are distributed along the circumference of the wire guide tube 1, and one or more wire guide openings 3 can be provided. When multiple wire guide openings 3 are provided, it is more convenient for the guide wire 2 to pass through.

[0041] In one embodiment, if Figure 6 As shown, the length direction of the guide wire opening 3 is at an angle with the axial direction of the guide wire tube 1, and the angle is less than 90 degrees. At this time, the direction of the guide wire 2 in the guide wire tube 1 is at an angle with the guide wire opening 3. In order to allow the guide wire 2 to pass through the guide wire opening 3 smoothly, a limiting ring 9 is provided on the inner diameter side of the guide wire tube 1, and the axial direction of the limiting ring 9 faces the length direction of the guide wire opening 3. By passing the guide wire 2 through the limiting ring 9, the length directions of the guide wire 2 and the guide wire opening 3 can be made consistent, so that the guide wire 2 can pass through the guide wire opening 3 easily. The above-mentioned method of obliquely setting the guide wire opening 3 can increase the extension length of the guide wire 2 relative to the method of parallelly setting the guide wire opening 3, thereby being able to contact more thrombi and improve the efficiency of thrombus fragmentation.

[0042] In one embodiment, if Figure 1~Figure 3 As shown, it also includes a developing wire 4, which is wound on the guide wire 2 at the thrombus-breaking structure. During use, the release length of the guide wire 2 can be reflected according to the developing situation, and the size of the thrombus-breaking structure can be adjusted according to the size of the thrombus.

[0043] In one embodiment, if Figure 1 and Figure 2 As shown, a notch 6 is provided on the guide wire tube 1, and the notch 6 can be formed by cutting on the guide wire tube 1. The notch 6 is located in the proximal direction of the guide wire opening 3. The notch 6 can reduce the local stiffness of the guide wire tube 1, thereby increasing the flexibility and agility of the guide wire tube 1 in the blood vessel, and can adapt to the anatomical structure of the blood vessel with a larger curvature, thereby reducing the risk of damage to the blood vessel wall.

[0044] In one embodiment, if Figure 1 and Figure 2 As shown, it also includes a heat shrink tube 5, which is sleeved on the outer diameter side of the guide wire tube 1 at the notch 6. The heat shrink tube 5 itself is flexible and will not affect the flexibility and agility of the guide wire tube 1. By being sleeved on the outside of the notch 6, the notch 6 can be blocked to prevent the guide wire 2 from passing through the notch 6.

[0045] In one embodiment, if Figure 1 , Figure 2 and Figure 4As shown, a sea corrugated section 7 is provided on the guide wire tube 1. The sea corrugated section 7 can be formed by cutting on the guide wire tube 1. The sea corrugated section 7 includes a circular ring 71 and a connecting column 72 connected between the circular rings 71. The connecting columns 72 on both sides of the same circular ring 71 are staggered and can also be arranged in a cross shape. The cooperation between the circular ring 71 and the connecting column 72 can make the sea corrugated section 7 flexible in all directions, so that the sea corrugated section 7 can be bent and deformed to reduce the risk of damage to the blood vessel wall. In addition, the internal space of the sea corrugated section 7 can be maintained during the bending and deformation process to avoid squeezing the internal space and causing interference and influence on the movement of the guide wire 2.

[0046] In one embodiment, if Figure 1 and Figure 2 As shown, it also includes a torque controller 8, which is connected to the proximal end of the guide wire 2. The diameter of the torque controller 8 is larger than the guide wire 2, which is convenient for holding, so as to drive the guide wire 2 to rotate and move, and improve the convenience of the thrombus breaking process.

[0047] In one embodiment, if Figure 7 As shown, during the thrombus crushing process, the adjustable thrombus crusher is used in combination with the suction catheter as follows: when in use, first place the adjustable thrombus crusher into the suction catheter and deliver it to the proximal end of the thrombus. The suction catheter is close to the thrombus, and the distal end of the adjustable thrombus crusher is inserted into the thrombus. The guide wire 2 of the adjustable thrombus crusher is extended out of the guide wire port 3 and unfolded to form a thrombus crushing structure, and the thrombus is crushed by rotating circumferentially while unfolding. After the thrombus is crushed, the adjustable thrombus crusher is withdrawn from the human body, and the thrombus is aspirated using the suction catheter. After the aspiration is completed, the suction catheter is withdrawn from the body.

[0048] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An adjustable bolt breaker, characterized in that: include: A wire guide tube, wherein a wire guide opening is provided on the tube wall of the wire guide tube, and the wire guide opening is located near the distal end of the wire guide tube; and a guide wire, wherein the guide wire is inserted into the guide wire tube, the distal end of the guide wire is connected to the distal end of the guide wire tube, the guide wire can pass through the guide wire opening in a curved shape, and the guide wire passing through the guide wire opening forms a plug-breaking structure; It also includes a round cap, wherein the distal end of the guide wire is connected to the middle of the proximal end of the round cap, and the periphery of the proximal end of the round cap is connected to the distal end of the guide wire tube; The length direction of the wire guide port forms an angle with the axial direction of the wire guide tube, a limiting ring is provided on the inner diameter side of the wire guide tube, the axial direction of the limiting ring faces the length direction of the wire guide port, and the guide wire is inserted into the limiting ring; It also includes a developing wire, which is wound around the guide wire at the plug-breaking structure.

2. The adjustable bolt breaker according to claim 1, characterized in that: The plug-breaking structure is a curved structure of the guide wire that is pre-heat-set, or a curved structure formed by pushing.

3. The adjustable bolt breaker according to claim 1, characterized in that: The wire guide tube is provided with a notch, and the notch is located in the proximal direction of the wire guide opening.

4. The adjustable bolt breaker according to claim 3, characterized in that: It also includes a heat shrink tube, which is sleeved on the outer diameter side of the wire guide tube at the notch.

5. The adjustable bolt breaker according to claim 1, characterized in that: The wire guide tube is provided with a sea wave section, which includes a circular ring and a connecting column connected between the circular rings, and the connecting columns on both sides of the same circular ring are staggered.

6. The adjustable bolt breaker according to claim 1, characterized in that: Also included is a torque controller, which is connected to the proximal end of the guide wire.

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