Intravascular foreign body extraction device with adjustable head end

Abstract

The utility model provides an intravascular foreign body taking-out device with an adjustable head end, which relates to the technical field of medical instruments and comprises a guide wire main body and a control assembly, a through hole is formed in the guide wire main body and at least penetrates through the guide wire main body in the radial direction; the control assembly comprises a control wire connected to the far end of the guide wire body, and the control wire penetrates through the penetrating hole and extends towards the near end. The guide wire body, the penetrating hole and the control wire are arranged, the size of a lantern ring formed by the guide wire body and the control wire is controlled by adjusting the control wire, and the control mode is flexible, convenient and fast. After the lantern ring is shrunk, the device has good trafficability and can conveniently pass through foreign matters; after the lantern ring is adjusted to be larger, the problem that the lantern ring is insufficient in size can be solved, and the requirement for adaptation to foreign matter is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to an intravascular foreign matter taking-out device with adjustable head end. BACKGROUND

[0002] Vascular intervention surgery is performed under the guidance of medical imaging equipment (such as digital subtraction angiography (DSA)), using a puncture needle to puncture the radial artery or femoral artery, and then sending a guide wire, a catheter, a stent and other instruments into the blood vessel. Doctors can deliver drugs and embolic materials to the lesion site through these instruments, or perform operations such as dilatation and stent implantation on the blood vessel, so as to achieve the purpose of treating diseases.

[0003] In the existing operation process, the guide wire may generate strong friction with the blood vessel wall when passing through a narrow and calcified blood vessel, which may cause the guide wire to break. In the treatment of hemangioma, the spring coil may fall off or come out of the hemangioma. The broken guide wire or spring coil is difficult to handle and often leads to medical accidents and medical disputes. When taking out the foreign matter, a catcher is often used. The head end sleeve ring of the existing sleeve ring type catcher is generally provided with a sleeve ring at the head end of the guide wire. The guide wire is sent to the proximal end of the foreign matter, and the foreign matter is sleeved by the sleeve ring, and then taken out. However, due to the different shapes and sizes of the foreign matter, the sleeve ring and the foreign matter often cannot be matched, which requires the doctor to try many times, and even the foreign matter cannot be taken out finally.

[0004] Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies in the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an intravascular foreign matter taking-out device with an adjustable head end, which adjusts the size of the head end sleeve ring by setting a guide wire body, a perforation and a control wire, so as to solve the problem that the sleeve ring of the catcher in the prior art cannot be matched with the size and shape of the foreign matter, and the foreign matter is difficult to catch.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An intravascular foreign matter taking-out device with an adjustable head end, comprising a guide wire body and a control assembly;

[0008] The guide wire body is provided with a perforation, and the perforation penetrates the guide wire body in at least the radial direction;

[0009] The control assembly comprises a control wire connected to the distal end of the guide wire body, and the control wire passes through the perforation and extends towards the proximal end.

[0010] Preferably, the guide wire body is provided with a connecting part covering the through hole, the diameter of the connecting part is smaller than that of other parts of the guide wire body, and a reinforcing sleeve is sleeved on the guide wire body and located on the connecting part.

[0011] Preferably, the reinforcing sleeve is provided with an opening corresponding to the through hole.

[0012] Preferably, the distal end and the proximal end of the reinforcing sleeve are connected with the guide wire body by bonding or welding, and the middle part of the reinforcing sleeve covers the connecting part.

[0013] Preferably, the proximal end of the guide wire body is provided with a plurality of limiting rings, and the control wire passes through the limiting rings.

[0014] Preferably, the limiting rings are equidistantly distributed on the proximal end of the guide wire body.

[0015] Preferably, the proximal end of the guide wire body is sleeved with a limiting tube, the limiting tube is provided with a first cavity for the guide wire body to pass through and a second cavity for the control wire to pass through.

[0016] Preferably, the guide wire body is a component made of stainless steel wire or nickel-titanium alloy wire.

[0017] Preferably, the distal end of the guide wire body is provided with a developing ball, and the distal end of the control wire is connected to the developing ball.

[0018] Preferably, the control wire is a component made of nickel-titanium alloy wire.

[0019] Beneficial effects:

[0020] (1) The utility model discloses a guide wire body, a through hole and a control wire are arranged, the size of the sleeve ring is controlled by adjusting the control wire, the control mode is flexible and convenient, the sleeve ring after reduction has good passability, and it is convenient to pass through the foreign matter, and the problem of insufficient size of the sleeve ring can be solved after the sleeve ring is adjusted to be larger, and the adaptation to the foreign matter is satisfied.

[0021] (2) The utility model discloses a reinforcing sleeve, the reinforcing sleeve protects the through hole, reduces the possibility that the through hole side wall concentrates stress and is disconnected when the control wire slides along the through hole, and improves the stability when the device works.

[0022] (3) The utility model discloses a limiting tube with a first cavity and a second cavity is arranged to limit the control wire, can effectively reduce the possibility that the proximal end of the guide wire body and the proximal end of the control wire are bent in the pushing process, and then the stable control of the control wire is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of the specification of the application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. Among them:

[0024] Figure 1 It is a front view structural schematic diagram of the intravascular foreign body taking-out device in the embodiment of the present application;

[0025] Figure 2 It is a right view structural schematic diagram of the intravascular foreign body taking-out device in the embodiment of the present application;

[0026] Figure 3 It is Figure 1 The sectional view for showing the structure of the connecting part;

[0027] Figure 4 It is a front view structural schematic diagram of the intravascular foreign body taking-out device in the embodiment 2 of the present application;

[0028] Figure 5 It is a front view structural schematic diagram of the intravascular foreign body taking-out device in the embodiment 3 of the present application;

[0029] Figure 6 It is a radial sectional view structural schematic diagram of the limiting tube in the embodiment 3 of the present application.

[0030] In the figure: 1, guide wire main body; 11, perforation; 12, connecting part; 13, developing ball; 2, control assembly; 21, control wire; 22, reinforcing sleeve; 23, opening; 3, limiting ring; 4, limiting tube; 41, first cavity; 42, second cavity. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0032] In the description of the present application, it should be understood that, in relation to the position description, for example, the position or location relationship indicated by the upper, lower, front, rear, left, right and the like is based on the position or location relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application.

[0033] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the first, second is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0034] In addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0035] In the description of the utility model, it is necessary to point out that, unless otherwise expressly provided and limited, the term "connection" should be understood broadly, for example, it can be fixedly connected or movably connected, or can be detachably connected or non-detachably connected, or integrally connected, can be mechanically connected, or electrically connected or can communicate with each other, can be directly connected, or indirectly connected through an intermediate medium, can be the communication between two elements, indirect communication or the interaction relationship between two elements.

[0036] In the description of the utility model, "distal end" refers to the end farther away from the doctor during operation, and "proximal end" refers to the end closer to the doctor during operation.

[0037] In the description of the utility model, "before use" refers to the state of the head adjustable intravascular foreign body removal device before use, before entering the human body or before contacting with the body fluid such as blood, tissue fluid and the like in the human body, and "in use" refers to the state that the head adjustable intravascular foreign body removal device has entered the human body or contacted with the body fluid such as blood, tissue fluid and the like in the human body.

[0038] In the description of the utility model, "in vivo environment" refers to the environment below the epidermis of the skin, where the body fluid exists, such as dermis layer and subcutaneous tissue, or the inside of blood vessels and organs.

[0039] The utility model will be described in detail below in combination with embodiments.It should be noted that in the case of no conflict, the embodiments in the utility model and the characteristics in the embodiments can be combined with each other.

[0040] The utility model discloses a head adjustable intravascular foreign body removal device, which can be matched with the size and shape of foreign matter, so that the doctor can easily grasp the foreign matter, and the doctor does not need to try many times, and the foreign matter can be finally removed.

[0041] The utility model provides a head adjustable intravascular foreign body removal device, which can be matched with the size and shape of foreign matter, so that the doctor can easily grasp the foreign matter, and the doctor does not need to try many times, and the foreign matter can be finally removed. Figures 1 to 3As shown, the guide wire includes a guide wire body 1 and a control assembly 2;

[0042] The guide wire body 1 is provided with a through hole 11 which penetrates the guide wire body 1 in the radial direction;

[0043] The control assembly 2 includes a control wire 21 which is connected to the distal end of the guide wire body 1, penetrates the through hole 11 and extends proximally.

[0044] The guide wire body 1 is made of stainless steel wire or nickel-titanium alloy wire and has a certain hardness so as not to be easily broken during operation, and at the same time, the guide wire body 1 has good biocompatibility and reduces the influence on the intravascular environment.

[0045] The through hole 11 which penetrates the guide wire body 1 in the radial direction is provided on the guide wire body 1, and the diameter of the through hole 11 is smaller than that of the guide wire body 1, specifically, the diameter of the through hole 11 is 0.1-0.15 mm smaller than that of the guide wire body 1. The through hole 11 does not cause the guide wire body 1 to be broken, and can ensure a certain structural strength.

[0046] In the preferred embodiment of the present application, the length of the through hole 11 on the guide wire body 1 is greater than the diameter of the control wire 21.

[0047] The control wire 21 is a component made of nickel-titanium alloy wire and has a certain structural strength, and the distal end of the control wire 21 is connected by welding to reduce the probability of the control wire 21 being separated from the main guide wire. After the control wire 21 penetrates the through hole 11, the distal end of the control wire 21 and the proximal end of the control wire 21 are on the two sides of the guide wire body 1 with the through hole 11 as a reference, the distal end of the control wire 21 forms a loop with the guide wire body 1 for capturing the foreign matter.

[0048] In use, the guide wire body 1 and the control wire 21 are sent into the blood vessel together from the puncture site and reach the proximal end of the foreign matter, the control wire 21 is pulled proximally to make the control wire 21 tightly contact with the guide wire body 1, penetrates the foreign matter and is located at the distal end of the foreign matter, the control wire 21 is pushed distally to make the control wire 21 slide along the through hole 11, the loop formed between the control wire 21 and the guide wire body 1 gradually increases, the maximum diameter of the loop is greater than the maximum diameter of the foreign matter, and then the guide wire body 1 and the control wire 21 are withdrawn at the same time, the head end of the guide wire body 1 is located between the distal end and the proximal end of the foreign matter, the control wire 21 is pulled proximally to make the loop decrease, the foreign matter is captured, and finally the guide wire body 1 is rotated to ensure stable connection with the foreign matter, and the guide wire body 1 and the control wire 21 are withdrawn to pull the foreign matter out of the blood vessel.

[0049] By adopting the guide wire body 1 and the control wire 21, the control wire 21 is adjusted to realize the control on the size of the loop formed by the guide wire body 1 and the control wire 21, and the control on the size of the loop can be flexibly realized. After the loop is reduced, the device has good passability and is convenient to pass through the foreign matter; and the adjustable setting allows the loop to be adjusted to be larger, so as to solve the problem of insufficient size of the loop and meet the adaptation to the foreign matter. The control wire 21 is used to realize the control on the size of the loop, the doctor is convenient to take out the foreign matter, and thus the success rate of taking out the detached spring ring and the broken micro guide wire is improved.

[0050] Preferably, the reinforcing sleeve 22 has a diameter equivalent to that of the guide wire body 1 except the connecting portion 12.

[0051] In the preferred embodiment of the utility model, the connecting portion 12 covering the perforation 11 is arranged on the guide wire body 1, the diameter of the connecting portion 12 is smaller than that of other parts of the guide wire body 1, and the reinforcing sleeve 22 is arranged on the connecting portion 12. The reinforcing sleeve 22 is preferably made of stainless steel, so that the reinforcing sleeve 22 has high structural strength and can protect the perforation 11 and reduce the possibility of fracture of the guide wire body 1 caused by concentrated stress on the perforation 11. The diameter of the connecting portion 12 is smaller than that of other parts of the guide wire body 1, so as to provide more space for the reinforcing sleeve 22 and improve the structural strength of the guide wire body 1 while avoiding the influence of the diameter of the connecting portion 12 on the passability. When the guide wire body 1 is made of a nickel-titanium alloy wire, the reinforcing sleeve 22 has better reinforcing effect.

[0052] In the preferred embodiment of the utility model, the reinforcing sleeve 22 is provided with an opening 23 corresponding to the perforation 11. The control wire 21 passes through the opening 23, and the opening 23 is arranged corresponding to the perforation 11, so as to reduce the size of the opening 23 on the reinforcing sleeve 22 and reduce the influence of the opening 23 on the structural strength of the reinforcing sleeve 22.

[0053] In the preferred embodiment of the utility model, the distal end and the proximal end of the reinforcing sleeve 22 are connected to the guide wire body 1 by adhesion or welding, and the middle part of the reinforcing sleeve 22 covers the connecting portion 12. The reinforcing sleeve 22 has a hollow middle part and a connecting sleeve ring with the opening 23 on the side wall. The reinforcing sleeve 22 is stably connected to the guide wire body 1 by adhesion or welding and can strengthen the structural strength of the perforation 11.

[0054] As Figure 4As shown, in a preferred embodiment of this invention, the proximal end of the guidewire body 1 is provided with several limiting rings 3, through which the control wire 21 passes. The limiting rings 3 are bonded to the guidewire body 1. The diameter of the limiting rings 3 is larger than the diameter of the guidewire body 1. The portion of the limiting rings 3 that does not contact the guidewire body 1 is on the same side of the guidewire body 1 as the proximal end of the control wire 21. The control wire 21 passes through the limiting rings 3 and can slide along the limiting rings 3. The setting of the limiting rings 3 allows the control wire 21 to remain parallel to the guidewire body 1, thereby ensuring that the force can be stably transmitted when pushing or pulling the control wire 21, and that the control wire 21 is less likely to fold during the process of pushing to the distal end. The limiting rings 3 are preferably made of PTFE or PU material, which only needs to have good biocompatibility and a certain structural strength.

[0055] In a preferred embodiment of this invention, the limiting rings 3 are evenly distributed at the proximal end of the guide wire body 1. By setting multiple sets of limiting rings 3, multiple points of the control wire 21 are limited, making the structure of the control wire 21 more stable and less prone to bending.

[0056] like Figure 5 and Figure 6 As shown, in a preferred embodiment of this utility model, a limiting tube 4 is sleeved on the proximal end of the guidewire body 1. The limiting tube 4 has a first cavity 41 through which the guidewire body 1 passes, and a second cavity 42 through which the control wire 21 passes. Preferably, the first cavity 41 and the second cavity 42 are not connected. In other embodiments of this application, the first cavity 41 and the second cavity 42 are connected. The limiting tube 4 is made of the same material as the guidewire body 1. The guidewire body 1 passes through the first cavity 41, and the control wire 21 passes through the second cavity 42. By using the limiting tube 4 to limit the guidewire body 1 and the control wire 21, the possibility of bending at the proximal end of the guidewire body 1 and the proximal end of the control wire 21 during the pushing process can be effectively reduced, achieving the purpose of stable control of the control wire 21.

[0057] In a preferred embodiment of this invention, the guidewire body 1 is a component made of stainless steel wire or nickel-titanium alloy wire. This ensures that the guidewire body has a certain structural strength and good biocompatibility.

[0058] In a preferred embodiment of this invention, a contrast-enhancing ball 13 is provided at the distal end of the guidewire body 1, and the distal end of the control wire 21 is connected to the contrast-enhancing ball 13. The contrast-enhancing ball 13 is spherical and preferably formed by tightly winding a platinum-iridium alloy or a nickel-titanium alloy. It can be clearly visualized under DSA equipment, making it convenient for doctors to determine the specific location of the distal end of the guidewire body 1. The control wire 21 and the contrast-enhancing ball 13 are connected by welding, and the contrast-enhancing ball 13 and the guidewire body 1 are connected by welding, forming a stable connection point at the distal end, making the collar less prone to breakage.

[0059] In the preferred embodiment, the control wire 21 is a component made of nickel-titanium alloy wire. The nickel-titanium alloy wire has good developing property, and the position of the control wire 21 can be clearly observed under the DSA device, so that the doctor can easily control the position of the control wire 21 and adjust the size of the sleeve ring.

[0060] The intravascular foreign body removal device with an adjustable head end will be described in detail through specific embodiments.

[0061] Embodiment 1

[0062] The embodiment provides an intravascular foreign body removal device with an adjustable head end, as shown in the drawings, which comprises a guide wire body 1 made of nickel-titanium alloy wire, and a control assembly 2 arranged on the guide wire body 1. Figures 1 to 3

[0063] The guide wire body 1 is provided with a perforation 11 close to the distal end, and the distance between the perforation 11 and the distal end of the guide wire body 1 is 20-30 mm. In some embodiments, the distance between the perforation 11 and the distal end of the guide wire body 1 (20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm) is one of the above distances.

[0064] The distal end of the guide wire body 1 is welded with a developing ball 13, and the developing ball 13 is made of nickel-titanium alloy winding. The developing ball 13 can assist the doctor to determine the position of the distal end of the guide wire body 1 under the DSA device.

[0065] The control wire 21 is welded on the developing ball 13 and extends towards the proximal end through the perforation 11. The length of the extension needs to meet the requirement that the proximal end of the control wire 21 is located outside the patient's body during the operation.

[0066] In the embodiment, the part of the guide wire body 1 located distally to the perforation 11, the developing ball 13 and the part of the control wire 21 located distally to the perforation 11 form a sleeve ring.

[0067] The control wire 21 is pushed outside the body to slide along the perforation 11, so as to increase the length of the control wire 21 located distally to the perforation 11 and expand the sleeve ring. The control wire 21 is pulled towards the proximal end to reduce the length of the control wire 21 located distally to the perforation 11 and shrink the sleeve ring.

[0068] The connecting part 12 covering the perforation 11 is arranged on the guide wire body 1, and the diameter of the connecting part 12 is smaller than that of other parts of the guide wire body 1. The reinforcing sleeve 22 is welded on the connecting part 12 of the guide wire body 1, and is preferably made of stainless steel. The reinforcing sleeve 22 is used to protect the connecting part 12 and reduce the stress concentration on the perforation 11 during the pushing and pulling of the control wire 21, so as to prevent the guide wire body 1 from being broken.

[0069] ​It should be noted that the length of the perforation 11 on the guide wire body 1 is greater than the diameter of the control wire 21. The control wire 21 can move in the length direction at the perforation 11, thereby reducing the limitation of the side wall of the perforation 11 on the movement of the control wire 21.

[0070] The reinforcing sleeve 22 is provided with an opening 23 corresponding to the perforation 11, and the control wire 21 passes through the opening 23.

[0071] In use, the guide wire body 1 and the control wire 21 are sent into the blood vessel together from the puncture and reach the proximal end of the foreign matter. The control wire 21 is pulled towards the proximal end to make the control wire 21 closely adhere to the guide wire body 1, pass through the foreign matter and be located at the distal end of the foreign matter. The control wire 21 is pushed towards the distal end to make the control wire 21 slide along the perforation 11. The collar gradually becomes larger, and the maximum diameter of the collar is greater than the maximum diameter of the foreign matter. The guide wire body 1 and the control wire 21 are withdrawn at the same time. The head end of the guide wire body 1 is located between the distal end and the proximal end of the foreign matter. The control wire 21 is pulled towards the proximal end to make the collar shrink. The foreign matter is covered. Finally, the guide wire body 1 is rotated to ensure stable connection with the foreign matter. The guide wire body 1 and the control wire 21 are withdrawn to pull out the foreign matter from the blood vessel.

[0072] By using the guide wire body 1 and the control wire 21, the size of the collar can be flexibly controlled. After the collar shrinks, the device has excellent passability and is convenient to pass through the foreign matter. After the collar expands, the problem of insufficient size of the collar can be solved, and the size of the foreign matter is better adapted. The size of the collar is controlled by the control wire 21, which is convenient for doctors to remove the foreign matter and improves the success rate of removing the foreign matter.

[0073] Embodiment 2

[0074] As shown in Figure 4 , this embodiment further describes the proximal end structure of the guide wire body 1 and the control wire 21 on the basis of embodiment 1.

[0075] Preferably, a plurality of limiting rings 3 are bonded to the proximal end of the guide wire body 1. The limiting rings 3 are distributed at equal intervals in multiple groups at the proximal end of the guide wire body 1. The limiting rings 3 are made of materials with good biocompatibility and certain structural strength, such as PTFE, PU, and PET. Part of the limiting rings 3 is bonded to the guide wire body 1. The part of the limiting rings 3 that does not contact the guide wire body 1 and the proximal end of the control wire 21 are located on the same side of the guide wire body 1. The control wire 21 passes through the limiting rings 3 and can slide along the limiting rings 3. The limiting rings 3 are used to limit the radial bending of the guide wire body 1, so that the guide wire body 1 remains straight, and the force on the control wire 21 can be stably transmitted. The control wire 21 is pushed and pulled to realize sliding along the perforation 11.

[0076] Embodiment 3

[0077] As shown in Figure 5 and Figure 6As shown, the proximal end of the guide wire body 1 is sleeved with a limiting tube 4, the limiting tube 4 is provided with a first cavity 41 and a second cavity 42, wherein the first cavity 41 is for the guide wire body 1 to pass through, the second cavity 42 is for the control wire 21 to pass through, and the first cavity 41 and the second cavity 42 are not communicated in the embodiment. The control wire 21 is limited by the limiting tube 4, which can effectively reduce the possibility of bending of the proximal end of the guide wire body 1 and the proximal end of the control wire 21 during the pushing process, thereby ensuring stable control of the control wire 21.

[0078] In summary: the utility model discloses through setting up guide wire body 1, perforation 11 and control wire 21, through adjusting control wire 21 to realize the control of the size of the loop formed by guide wire body 1 and control wire 21, and the control mode is flexible and convenient. The loop is reduced, and the device has good passability, and it is convenient to pass through the foreign matter; and the loop is adjusted to be larger, and the problem of insufficient size of the loop can be solved, and the adaptation to the foreign matter is satisfied.

[0079] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An intravascular foreign body retrieval device with adjustable tip, characterized in that, The guide wire comprises a guide wire body (1) and a control assembly (2); The guide wire body (1) is provided with a through hole (11) which penetrates the guide wire body (1) at least in the radial direction; The control assembly (2) comprises a control wire (21) connected to the distal end of the guide wire body (1), the control wire (21) penetrating the through hole (11) and extending proximally.

2. The head adjustable endovascular foreign body retrieval device of claim 1, wherein, The guide wire body (1) is provided with a connecting portion (12) covering the through hole (11), the diameter of the connecting portion (12) being smaller than that of other portions of the guide wire body (1), and the guide wire body (1) is provided with a reinforcing sleeve (22) sleeved on the connecting portion (12).

3. The head adjustable intra-vascular foreign object extraction device according to claim 2, wherein, The reinforcing sleeve (22) is provided with an opening (23) corresponding to the through hole (11).

4. The head adjustable intra-vascular foreign object extraction device according to claim 3, wherein, The distal end and the proximal end of the reinforcing sleeve (22) are connected to the guide wire body (1) by means of bonding or welding, and the middle portion of the reinforcing sleeve (22) covers the connecting portion (12).

5. The head adjustable intra-vascular foreign object extraction device of claim 1, wherein, The proximal end of the guide wire body (1) is provided with a plurality of limiting rings (3), and the control wire (21) penetrates the limiting rings (3).

6. The head adjustable intra-vascular foreign object extraction device of claim 5, wherein, The limiting rings (3) are distributed at equal intervals on the proximal end of the guide wire body (1).

7. The head adjustable intra-vascular foreign object extraction device of claim 1, wherein, The proximal end of the guide wire body (1) is sleeved with a limiting tube (4), the limiting tube (4) is provided with a first cavity (41) for the guide wire body (1) to penetrate and a second cavity (42) for the control wire (21) to penetrate.

8. The intravascular foreign body retrieval device of any of claims 1-7, wherein, The guide wire body (1) is a component made of stainless steel wire or nickel-titanium alloy wire.

9. The intravascular foreign body retrieval device of any of claims 1-7, wherein, The distal end of the guide wire body (1) is provided with a developing ball (13), and the distal end of the control wire (21) is connected to the developing ball (13).

10. The intravascular foreign body retrieval device of any of claims 1-7, wherein, The control wire (21) is a component made of nickel-titanium alloy wire.

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