Adjustable multi-section marking guide wire

Abstract

The utility model relates to the technical field of guide wires, in particular to an adjustable multi-section marking guide wire. In order to solve the problems that the diameter of a core steel wire is fixed, and the supporting force and the flexibility of the core steel wire are also fixed, so that a guide wire with relatively strong supporting force is possibly poor in performance in a complex blood vessel path, and a guide wire with relatively high flexibility is possibly poor in performance under the condition that stable support is needed, the following technical scheme is provided: the guide wire comprises a pushing tube, the pushing pipe is tubular, one end of the pushing pipe is connected with an operation pipe, the end, away from the operation pipe, of the pushing pipe is conical, and the end, away from the operation pipe, of the pushing pipe is sleeved with a sheath; the head end is connected to the end, away from the pushing pipe, of the protective sleeve, the head end is hemispherical, and the plane of the head end faces the pushing pipe. According to the utility model, the performance of the guide wire in the blood vessel can be adjusted in vitro so as to be suitable for the blood vessel conditions at different positions in vivo, and no harm is caused to a patient during adjustment, so that the safety is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to guide wire technology field especially relates to a kind of adjustable control multi-section mark guide wire. BACKGROUND

[0002] The role of guide wire is to provide "track" for balloon, stent, ultrasonic catheter, rotary grinding head and other subsequent instruments into the diseased blood vessel through coronary artery stenosis or occlusion site to distal blood vessel, so guide wire is essential instrument in coronary intervention treatment.Core wire is through the whole length of guide wire, and it is uniform cylinder in proximal end push rod part, and it is gradually tapered transition section in the part close to head end.Usually speaking, the support force and flexibility of guide wire are opposite two characteristics, the flexibility of guide wire with strong support force is poor, and vice versa.Because the diameter of core wire is fixed, its support force and flexibility are also fixed, so guide wire with stronger support force can not perform well in complex blood vessel path, and guide wire with higher flexibility can not perform well in the case of needing stable support.In view of this, the utility model provides a kind of adjustable control multi-section mark guide wire. SUMMARY

[0003] The utility model aims at the problem that the diameter of core wire is fixed in the background art, its support force and flexibility are also fixed, so guide wire with stronger support force can not perform well in complex blood vessel path, and guide wire with higher flexibility can not perform well in the case of needing stable support, and provides a kind of adjustable control multi-section mark guide wire.

[0004] The utility model discloses a technical scheme: a kind of adjustable control multi-section mark guide wire, including push tube, the push tube is tubularly arranged, one end of the push tube is connected with operating tube, the one end of the push tube away from operating tube is conically arranged, and is equipped with sheath for sleeve installation;Head end connected to the sheath away from push tube one end, the head end is hemispherically arranged, and the plane of the head end is towards push tube;Fixedly connected in the fixed rod of the head end near push tube side, the one end of the fixed rod away from head end is fixedly connected with flexible rod, the outside of the flexible rod is equipped with adjusting cylinder, the adjusting cylinder is slidingly connected in push tube;Adjusting assembly installed in the push tube, the adjusting assembly is used to adjust the length that flexible rod extends adjusting cylinder;Action assembly is arranged in the push tube and operating tube, and the action assembly is used to drive adjusting assembly to adjust.

[0005] Optionally, the one end of the adjusting cylinder near operating tube is cylindrical, the inner diameter of the one end of the adjusting cylinder near sheath gradually reduces, and the flexible rod is slidingly connected in the adjusting cylinder.

[0006] Optionally, the flexible rod is fixedly connected with a fixed plate at the end away from the fixed rod, the fixed plate is arranged in a cross shape, and the fixed plate is fixedly connected to the inner wall of the pushing pipe.

[0007] Optionally, the adjusting assembly comprises a plurality of connecting rods fixedly connected to the adjusting cylinder at the end away from the head end, the plurality of connecting rods are in sliding fit with the fixed plate, and the plurality of connecting rods are fixedly connected with a connecting plate at the end away from the adjusting cylinder.

[0008] Optionally, the connecting plate is fixedly connected with a rack at the side away from the connecting rod, the rack is provided with a gear at one side, the gear is in mesh with the rack, a positioning rod is fixedly connected in the gear, and the two ends of the positioning rod are rotatably connected with fixed seats, and the fixed seats are fixedly connected to the inner wall of the pushing pipe.

[0009] Optionally, the acting assembly comprises a first rotating wheel fixedly installed on the positioning rod, an adjusting coil is wound on the first rotating wheel, a second rotating wheel is further wound on the adjusting coil, the second rotating wheel is arranged in the operating pipe, a synchronous rod is fixedly connected in the second rotating wheel, and the synchronous rod is fixedly connected with a knob at one end and penetrates through the operating pipe.

[0010] Optionally, a retaining sleeve is arranged on the outer ring of the adjusting coil, and the retaining sleeve is fixedly connected in the operating pipe.

[0011] In summary, the present application has at least one of the following beneficial technical effects:

[0012] The acting assembly is arranged, the first rotating wheel in the blood vessel is driven to rotate when the knob is rotated, the gear is driven to rotate, the length of the flexible rod extending out of the adjusting cylinder is adjusted, the flexible rod has a longer extension length when a certain flexibility is required to pass through a complex blood vessel path, and the flexible rod has a shorter extension length when stable support is required, so that the applicability in use is ensured.

[0013] The position of the adjusting cylinder is further adjusted to change the extension length of the flexible rod, so that the movement of other components except the adjusting cylinder is avoided during adjustment, and damage to the blood vessel during adjustment is avoided.

[0014] In summary, the present application can adjust the performance of the guide wire in the blood vessel in vitro, so as to be suitable for different blood vessel conditions in different positions in the body, and the patient will not be harmed during adjustment, and the safety is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure diagram of a controllable multi-section marker guide wire.

[0016] Figure 2 It is Figure 1a cross-sectional structural schematic view of the push tube and the internal structure of the operation tube;

[0017] Figure 3 a structural schematic view of the push tube and the internal structure of the operation tube;

[0018] Figure 4 is Figure 3 an enlarged schematic view of A in the push tube and the internal structure of the operation tube.

[0019] Reference signs:

[0020] 1, push tube; 2, operation tube; 3, sheath; 4, head end; 5, fixed rod;

[0021] 6, flexible rod; 61, fixed plate;

[0022] 7, adjusting cylinder;

[0023] 8, adjusting assembly; 81, connecting rod; 82, connecting plate; 83, rack; 84, gear; 85, positioning rod; 86, fixed seat;

[0024] 9, action assembly; 91, first rotating wheel; 92, adjusting coil; 93, second rotating wheel; 94, synchronous rod; 95, knob; 96, retaining sleeve. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0026] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0027] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the utility model, it is to explain, unless there is explicit provision and limitation, the term "installation", "link", "connection" should be broad sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through the intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] Embodiment

[0031] As Figure 1 And Figure 2 The utility model discloses a kind of adjustable control multi-section mark guiding guide wire, including push tube 1, push tube 1 is tubularly arranged, one end of push tube 1 is connected with operating tube 2, and operating tube 2 is relatively long, so that the end of operating tube 2 is still part outside human body after push tube 1 is inserted into blood vessel. The end of push tube 1 away from operating tube 2 is conically arranged, and sheath 3 is installed in sleeve. Sheath 3 is spring coil sheath guide wire, with better tactile feedback, i.e. operator can feel the resistance encountered by guide wire head end in guide wire proximal end. Head end 4 connected to the end of sheath 3 away from push tube 1, head end 4 is hemispherically arranged, and the plane of head end 4 is towards push tube 1, facilitating in blood vessel Propelling.

[0032] Further, the above guiding guide wire includes fixed rod 5 fixedly connected to the side of head end 4 close to push tube 1, and flexible rod 6 is fixedly connected to the end of fixed rod 5 away from head end 4, and fixed rod 5 makes flexible rod 6 and head end 4 be integrated. The end of flexible rod 6 away from fixed rod 5 is fixedly connected with fixed plate 61, and fixed plate 61 is cruciformly arranged, and fixed plate 61 is fixedly connected to the inner wall of push tube 1, so that flexible rod 6 is fixed in push tube 1. The outside of flexible rod 6 is sleeved with adjusting cylinder 7, and adjusting cylinder 7 is slidingly connected in push tube 1, and the end of adjusting cylinder 7 close to operating tube 2 is cylindrical, and the inner diameter of the end of adjusting cylinder 7 close to sheath 3 gradually decreases, and flexible rod 6 is slidingly connected in adjusting cylinder 7, and the length of flexible rod 6 extending out of adjusting cylinder 7 changes after adjusting cylinder 7 moves, so that the angle of flexible rod 6 that can be bent changes, to facilitate adjusting the flexibility and stability of sheath 3.

[0033] Further, please refer to Figure 3 And Figure 4The guiding wire further comprises an adjusting assembly 8 installed in the pushing tube 1, which is used to adjust the length of the flexible rod 6 extending out of the adjusting cylinder 7. The adjusting assembly 8 comprises four groups of connecting rods 81 fixedly connected to the adjusting cylinder 7 at the end away from the head end 4, which move synchronously with the adjusting cylinder 7. The four groups of connecting rods 81 are in sliding fit with the fixed plate 61, so that the connecting rods 81 and the adjusting cylinder 7 move stably. The ends of the four groups of connecting rods 81 away from the adjusting cylinder 7 are fixedly connected with a connecting plate 82, which moves synchronously with the connecting rods 81. The connecting plate 82 is fixedly connected with a rack 83 on the side away from the connecting rods 81, which moves synchronously with the connecting plate 82. The rack 83 is provided with a gear 84 on one side, which is in mesh with the rack 83 and moves the rack 83 when rotating. The gear 84 is fixedly connected with a positioning rod 85, which rotates synchronously with the gear 84. The ends of the positioning rod 85 are rotatably connected with fixed seats 86 fixedly connected to the inner wall of the pushing tube 1, so that the gear 84 remains in place when rotating.

[0034] Finally, the guiding wire further comprises an acting assembly 9 arranged in the pushing tube 1 and the operating tube 2, which is used to drive the adjusting assembly 8 to adjust. The acting assembly 9 comprises a first rotating wheel 91 fixedly installed on the positioning rod 85, which rotates the positioning rod 85 when rotating, so as to rotate the gear 84 synchronously. The first rotating wheel 91 is wound with an adjusting coil 92, which is further wound with a second rotating wheel 93, which is beneficial to increase the friction and make the second rotating wheel 93 rotate the first rotating wheel 91 through the adjusting coil 92. The second rotating wheel 93 is arranged in the operating tube 2, which is fixedly connected with a synchronous rod 94, one end of which penetrates the operating tube 2 and is fixedly connected with a knob 95, which rotates the second rotating wheel 93 through the synchronous rod 94 when rotating. The outer ring of the adjusting coil 92 is sleeved with a retaining sleeve 96 fixedly connected to the operating tube 2, which is used to ensure the stability of the adjusting coil 92 when moving, so as to move the adjusting coil 92 when rotating the second rotating wheel 93.

[0035] In the embodiment, first, one end of the head end 4 is inserted into the blood vessel. When a complex blood vessel path needs to be passed, the knob 95 is rotated, and the knob 95 drives the second rotating wheel 93 to rotate through the synchronous rod 94. The second rotating wheel 93 drives the adjusting coil 92 wound thereon to move when rotating, and drives the first rotating wheel 91 to rotate. At this time, the first rotating wheel 91 drives the gear 84 to rotate through the positioning rod 85 when rotating. The gear 84 meshes with the rack 83 when rotating, so that the rack 83 moves away from the head end 4, and the adjusting cylinder 7 slides in the push tube 1 through the connecting plate 82 and the connecting rod 81. At this time, the adjusting cylinder 7 moves away from the head end 4, and the length of the flexible rod 6 extending out of the adjusting cylinder 7 becomes longer, so that the flexibility of the sheath 3 is obviously improved, and it is convenient to pass through the complex blood vessel path. When stable support needs to be performed, the knob 95 is reversely rotated, so that the adjusting cylinder 7 approaches the head end 4, and the length of the flexible rod 6 extending out of the adjusting cylinder 7 becomes shorter, so that the sheath 3 is not easy to be bent compared with before, and the stability is improved.

[0036] The above specific embodiments are only optional embodiments of the utility model, and based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. An adjustable multi-segment marker guide wire, comprising: The utility model provides a kind of push tube (1), the push tube (1) is tubular arrangement, one end of the push tube (1) is connected with operating tube (2), the one end of the push tube (1) away from operating tube (2) is conical arrangement, and sheath installation has sheath (3); Head (4) is connected to the one end of the sheath (3) away from the push tube (1), the head (4) is hemispherical arrangement, and the plane of the head (4) faces the push tube (1); Fixedly connected in the fixed rod (5) of the head (4) near the one side of the push tube (1), the one end of the fixed rod (5) away from the head (4) is fixedly connected with flexible rod (6), the outside of the flexible rod (6) is sleeved with adjusting cylinder (7), and the adjusting cylinder (7) is slidingly connected in the push tube (1); Adjusting assembly (8) is installed in the push tube (1), and the adjusting assembly (8) is used to adjust the length of flexible rod (6) to extend adjusting cylinder (7); Action assembly (9) is arranged in the push tube (1) and operating tube (2), and the action assembly (9) is used to drive adjusting assembly (8) to adjust. The one end of the adjusting cylinder (7) near the operating tube (2) is a cylinder, the inner diameter of the one end of the adjusting cylinder (7) near the sheath (3) gradually reduces, and the flexible rod (6) is slidingly connected in the adjusting cylinder (7).

2. The steerable multi-segment marker guide wire of claim 1, wherein, The one end of the flexible rod (6) away from the fixed rod (5) is fixedly connected with fixed plate (61), the fixed plate (61) is cross-shaped arrangement, and the fixed plate (61) is fixedly connected to the inner wall of the push tube (1).

3. The steerable multi-segment marker guide wire of claim 2, wherein, The adjusting assembly (8) includes a plurality of connecting rods (81) fixedly connected to the one end of the adjusting cylinder (7) away from the head (4), a plurality of the connecting rods (81) are slidingly matched with the fixed plate (61), and the one end of a plurality of the connecting rods (81) away from the adjusting cylinder (7) is fixedly connected with connecting plate (82).

4. The steerable multi-segment marker guide wire of claim 3, wherein, The one side of the connecting plate (82) away from the connecting rod (81) is fixedly connected with rack (83), one side of the rack (83) is provided with gear (84), the gear (84) is engaged with the rack (83), the gear (84) is fixedly connected with positioning rod (85), both ends of the positioning rod (85) are rotatably connected with fixed seat (86), and the fixed seat (86) is fixedly connected to the inner wall of the push tube (1).

5. The steerable multi-segment marker guide wire of claim 4, wherein, The action assembly (9) includes first rotating wheel (91) fixedly installed on the positioning rod (85), adjusting coil (92) is wound on the first rotating wheel (91), second rotating wheel (93) is further wound and arranged on the adjusting coil (92), the second rotating wheel (93) is arranged in the operating tube (2), the second rotating wheel (93) is fixedly connected with synchronous rod (94), one end of the synchronous rod (94) penetrates the operating tube (2) and is fixedly connected with knob (95).

6. The steerable multi-segment marker guide wire of claim 5, wherein, The outer ring of the adjusting coil (92) is sleeved with retaining sleeve (96), and the retaining sleeve (96) is fixedly connected in the operating tube (2).

7. The steerable multi-segment marker guide wire of claim 6, wherein, ​

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