Adjustable curved guide wire structure

Abstract

The utility model discloses an adjustable bending guide wire structure, which belongs to the field of guide wire technology. It comprises: a guide wire rod, comprising a guide head and a rod connected to the guide head; a first guide ring tube, which is installed on the rod, and a first adjustment block is slidably installed in the first guide ring tube; a bending adjustment rope, one end of which is installed at the edge of the guide head, and the other end penetrates into the first guide ring tube and is connected to the first adjustment block. When the guide head of the guide wire rod needs to pass through a curved internal channel, by moving the first adjustment block, the first adjustment block slides in the first guide ring tube, and one end of the bending adjustment rope can be pulled, so that the other end of the bending adjustment rope pulls the guide head, so that the guide head can be offset and bent to adapt to the curvature of the internal channel. When passing through, the guide head is not easy to conflict with the side wall tissue of the internal channel, which can reduce damage to the internal tissue of the human body and improve the safety and passability of the guide wire rod. The method of operating the guide head by moving the first adjustment block is simple and reliable, and easy to use.

Description

Technical Field

[0001] The utility model relates to the technical field of guide wires, in particular to an adjustable curved guide wire structure. Background Art

[0002] Flexible guide wires can be used to insert into human blood vessels or tissues for treatment and other operations. Since the internal channels of human blood vessels or tissues are spatial, after the guide wire is inserted into the blood vessel or tissue, it is necessary to rely on the guide wire's own flexibility to adapt to the curved internal channel. However, if the guide wire needs to pass through an internal channel with a large bending angle, the end of the guide wire is likely to damage the human blood vessels or tissues, making the safety and passability of the guide wire poor. Utility Model Content

[0003] The utility model aims to provide an adjustable curved guide wire structure to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is: an adjustable bend guide wire structure, characterized in that it includes: a guide wire rod, including a guide head part and a rod part connected to the guide head part; a first guide ring cylinder, installed on the rod part, and a first adjustment block is slidably installed in the first guide ring cylinder; a bending adjustment rope, one end of which is installed at the edge of the guide head part, and the other end penetrates into the first guide ring cylinder and is connected to the first adjustment block.

[0005] This technical solution has at least the following beneficial effects: when the guide head of the guide wire rod needs to pass through a curved internal channel, by moving the first adjustment block, the first adjustment block slides in the first guide ring tube, and one end of the bending adjustment rope can be pulled, so that the other end of the bending adjustment rope pulls the guide head, so that the guide head can be offset and bent to adapt to the curvature of the internal channel. When passing through, the guide head is not easy to conflict with the side wall tissue of the internal channel, which can reduce damage to the internal tissue of the human body and improve the safety and passability of the guide wire rod. Moreover, the method of operating the guide head by moving the first adjustment block is simple and reliable, and easy to use.

[0006] As a further improvement of the above technical solution, the guide head is equipped with a limiting ring sleeved on the periphery of the rod, a slider connected to the bending adjustment rope is slidably installed in the limiting ring, a limiting slide groove is provided for the bending adjustment rope to pass through, a reversing rope connected to the slider is slidably installed in the limiting ring, and both ends of the reversing rope extend from both ends of the limiting ring and extend to the rod. By pulling the reversing rope, the reversing rope pulls the slider to slide in the limiting ring, thereby changing the position of the slider in the limiting ring. When the bending adjustment rope is pulled, the guide head can be offset in the desired direction to adapt to multiple blood vessel tissues with different bending directions, thereby improving the applicability and passability of the guide wire rod.

[0007] As a further improvement of the above technical solution, the rod is installed with a second guide ring tube, in which a second adjustment block and a driving rope fixedly connected to the second adjustment block are slidably installed, and the two ends of the driving rope pass through the two ends of the second guide ring tube and are connected to the two ends of the reversing rope. By pushing the second adjustment block, the driving rope can be pulled to drive the reversing rope to move, and the reversing rope can pull the slider to slide in the limiting ring tube, and the driving rope is pulled by pushing the second adjustment block to drive the reversing rope to move, which can facilitate the control of the movement displacement of the reversing rope, that is, to facilitate the control of the offset direction of the guide head, and improve the convenience and reliability of operation.

[0008] As a further improvement of the above technical solution, the rod is rotatably mounted with a second handle ring, and the second handle ring is connected to the second adjustment block. By rotating the second handle ring, the second adjustment block is driven to slide in the second guide ring tube, which can further improve the convenience of operation of the reversing rope, improve the convenience of operation of the guide wire rod, and thus improve the control performance of the guide wire rod.

[0009] As a further improvement of the above technical solution, the rod is rotatably mounted with a first handle ring, and the first handle ring is connected to the first adjustment block. By rotating the first handle ring, the first adjustment block can be driven to slide in the first guide ring tube, which can further improve the convenience of operating the bending rope, improve the convenience of the bending operation of the guide head, and thus improve the control performance of the guide wire rod.

[0010] As a further improvement of the above technical solution, the first handle ring and the second handle ring are arranged in parallel, and one of the first handle ring and the second handle ring has a larger diameter and a smaller thickness than the other. The first handle ring and the second handle ring can be easily rotated forward and backward. The first handle ring and the second handle ring are distinguished by the diameter, so as to improve the recognition of operation and reduce the possibility of misoperation. The first handle ring or the second handle ring with a smaller diameter is thickened to ensure that the first handle ring or the second handle ring with a smaller diameter has a larger operating space for easy rotation operation.

[0011] As a further improvement of the above technical solution, a handle cover is installed at a position of the rod portion close to the second handle ring, and a palm groove for the thenar position of the palm to be inserted is provided on the outer periphery of the handle cover, and a finger groove for the fingers to be inserted is provided on the outer periphery of the handle cover. When the palm grasps the handle cover, the thenar position of the palm is placed against the bottom wall of the palm groove, and the middle finger, ring finger and / or little finger can be inserted into the finger groove to firmly grasp the handle cover, and the first handle ring and the second handle ring can be rotated by the thumb, index finger and / or middle finger, which can facilitate the single-handed operation of the first handle ring and the second handle ring.

[0012] As a further improvement of the above technical solution, two sliders are provided, the limiting ring tube is provided with a partition block between the two sliders, the two sliders are respectively connected to two bending adjustment ropes, and the two bending adjustment ropes are respectively inserted into the first guide ring tube at the end away from the slider and connected. By pushing the first adjustment block forward or backward, the bending adjustment ropes on both sides can be pulled respectively, so that the guide head can be offset and bent according to the required direction, thereby improving the flexibility of the offset and bending of the guide head.

[0013] As a further improvement of the above technical solution, an arc connecting rod is slidably installed in the limiting ring cylinder, and the two ends of the arc connecting rod are respectively connected to the two sliders. The arc connecting rod can relatively fix the positions of the two sliders and improve the stability of the relative positions of the two sliders.

[0014] As a further improvement of the above technical solution, the slider is a sphere, which can better adapt to the space inside the first guide ring tube and improve the smoothness of the slider sliding inside the first guide ring tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the limiting ring cylinder in the first embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of a partial structural space cross-sectional structure of the first embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the limiting ring cylinder in the second embodiment of the utility model;

[0020] Figure 5 It is a schematic diagram of a partial structural space cross-section structure of the second embodiment of the utility model.

[0021] The guide part 10, the rod part 11, the handle sleeve 12, the palm groove 13, the finger groove 14, the wire winding sleeve 15, the first guide ring tube 20, the first adjusting block 21, the bending adjustment rope 22, the first handle ring 23, the first give way groove 24, the limiting ring tube 30, the slider 31, the limiting slide groove 32, the reversing rope 33, the second guide ring tube 40, the second adjusting block 41, the driving rope 42, the second handle ring 43, the second give way groove 44, the dividing block 50, and the arc connecting rod 51. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Embodiment 1:

[0027] Reference Figure 1-3 , an adjustable bend guide wire structure, comprising a guide wire rod, a first guide ring cylinder 20 and a bend adjustment rope 22. The guide wire rod comprises a guide head 10 and a rod 11, the guide head 10 is hemispherical and has a diameter greater than that of the rod 11, and one end of the rod 11 is fixedly connected to the middle position of one side of the plane of the guide head 10. A wire wrapping sleeve 15 is sleeved on the outer side of the rod 11, one end of the wire wrapping sleeve 15 is fixedly connected to one side of the plane of the guide head 10, and the other end is fixedly connected to the end of the rod 11 away from the guide head 10.

[0028] The first guide ring tube 20 is sleeved on the outer side of the end of the rod 11 away from the guide head 10, so that the axis of the first guide ring tube 20 is arranged around the outer periphery of the rod 11. A first adjustment block 21 is arranged inside the first guide ring tube 20, and the first adjustment block 21 can slide relatively along the axis in the first guide ring tube 20. A first clearance groove 24 is opened on the outer periphery of the first guide ring tube 20, and one end of the first adjustment block 21 is slidably arranged in the first clearance groove 24. A first handle ring 23 is rotatably installed on the outer periphery of the end of the rod 11 away from the guide head 10 and close to the first guide ring tube 20. The first handle ring 23 is partially sleeved on the outer periphery of the first guide ring tube 20, so that the first handle ring 23 can cover the outer periphery of the first guide ring tube 20. The first handle ring 23 and the first guide ring tube 20 can rotate relatively. The inner side of the first handle ring 23 is connected to the end of the first adjustment block 21 extending out of the first clearance groove 24. One end of the bending adjustment rope 22 penetrates the first guide ring tube 20 and is fixedly connected to the first adjustment block 21.

[0029] A limiting ring tube 30 is installed on the side wall of the guide head 10 close to the rod 11, and the limiting ring tube 30 is sleeved on the outer peripheral side of the rod 11, so that the axis of the limiting ring tube 30 is arranged around the outer periphery of the rod 11. The center of the limiting ring tube 30 is distributed corresponding to the center of the guide head 10 and the axis center of the rod 11. A slider 31 is arranged inside the limiting ring tube 30, and the slider 31 is a sphere. The slider 31 can slide relatively along the axis inside the limiting ring tube 30. A limiting groove 32 is provided on the side of the limiting ring tube 30 away from the guide head 10. The end of the bending adjustment rope 22 away from the connection with the first adjustment block 21 passes through the limiting groove 32 and is fixedly connected to the slider 31. Among them, the opening width of the limiting groove 32 is smaller than the diameter of the slider 31, so that the slider 31 cannot be separated from the limiting ring tube 30 from the opening of the limiting groove 32. A notch is provided on one side of the limiting ring tube 30 , a reversing rope 33 is passed through the interior of the limiting ring tube 30 , and both ends of the reversing rope 33 extend out of the limiting ring tube 30 from the notch.

[0030] A second guide ring tube 40 is sleeved on one end of the rod 11 away from the guide head 10. The second guide ring tube 40 is located on one side of the first guide ring tube 20 close to the guide head 10. A second adjustment block 41 is arranged inside the second guide ring tube 40, and the second adjustment block 41 can slide relatively along the axis in the second guide ring tube 40. A driving rope 42 is slidably penetrated inside the second guide ring tube 40, and the driving rope 42 is fixedly connected to the second adjustment block 41. The two ends of the driving rope 42 extend from the two ends of the second guide ring tube 40 respectively. Among them, the two ends of the driving rope 42 correspond to the two ends of the reversing rope 33, so that the driving rope 42 and the reversing rope 33 form a closed loop structure after connection. A second clearance groove 44 is provided on the outer peripheral side of the second guide ring tube 40, and one end of the second adjustment block 41 is slidably arranged in the second clearance groove 44. A second handle ring 43 is rotatably mounted on the outer periphery of the rod portion 11 away from one end of the guide head portion 10 and close to the second guide ring tube 40. The second handle ring 43 is partially sleeved on the outer periphery of the second guide ring tube 40, so as to shield the second guide ring tube 40. The second handle ring 43 and the second guide ring tube 40 can rotate relative to each other. The inner side of the second handle ring 43 is fixedly connected to one end of the second adjustment block 41 extending out of the second clearance groove 44.

[0031] Among them, the outer peripheral sides of the first handle ring 23 and the second handle ring 43 are both provided with anti-slip grooves, and the first handle ring 23 and the second handle ring 43 are in adjacent positions, that is, they are arranged side by side. The diameter of the first handle ring 23 is smaller than the diameter of the second handle ring, and the thickness of the first handle ring 23 is greater than the thickness of the second handle ring. Therefore, it is convenient to distinguish the first handle ring 23 and the second handle ring 43, so as to distinguish the adjustment of the offset bending direction of the guide head part 10 and the offset bending of the guide head part 10. In other embodiments, the diameter of the first handle ring 23 can also be larger than the diameter of the second handle ring 43, and the thickness of the first handle ring 23 can be smaller than the thickness of the second handle ring 43.

[0032] By rotating the first handle ring 23, the first adjustment block 21 can be driven to slide in the first clearance groove 24. The sliding of the first adjustment block 21 can pull the bending adjustment rope 22, thereby pulling the guide head 10 to achieve offset bending. By rotating the second handle ring 43, the second adjustment block 41 can be driven to slide in the second clearance groove 44. The sliding of the second adjustment block 41 can pull the driving rope 42, and the driving rope 42 then pulls the reversing rope 33, so that the slider 31 slides in the limiting ring tube 30, changing the position of the slider 31 relative to the center of the limiting ring tube 30, that is, changing the position of the slider 31 relative to the center of the axis of the rod 11. Since the bending adjustment rope 22 is connected to the slider 31, the offset bending direction of the guide head 10 can be changed to adapt to the internal channels of blood vessels or tissues with multiple different bending directions, thereby improving the safety and passability of the guide wire rod.

[0033] A handle sleeve 12 is installed at the end of the rod 11 away from the guide head 10. The handle sleeve 12 is located at a side position of the first handle ring 23 away from the second handle ring 43. A palm groove 13 and a finger groove 14 are provided on the periphery of the handle sleeve 12. The palm groove 13 is similar in shape to the thenar position of the palm, so that the thenar position of the palm can be inserted. Two finger grooves 14 are arranged side by side axially on the periphery of the handle sleeve 12, so that when the palm holds the handle sleeve 12, the thenar position of the palm can be inserted into the palm groove 13, and the ring finger and the little finger can be respectively inserted into the two finger grooves 14. At this time, the middle finger can be placed at the position of the first handle ring 23, and the first handle ring 23 can be rotated by the middle finger and the thumb. The index finger can be placed at the position of the second handle ring 43, and the second handle ring 43 can be rotated by the index finger and the thumb. In other embodiments, three finger grooves 14 may be arranged side by side, for the middle finger, ring finger and little finger to be inserted and positioned respectively, so that the first handle ring 23 or the second handle ring 43 can be rotated by the index finger and thumb.

[0034] Embodiment 2:

[0035] Reference Figure 4-5 The difference between this embodiment and the first embodiment lies in the structure of the limiting ring 30 and the number of sliders 31 and bending adjustment ropes 22.

[0036] Specifically, the present embodiment further includes a partition block 50, which is disposed in the limiting ring tube 30. The position of the partition block 50 and the position of the notch for the reversing rope 33 to extend are respectively located at the two ends of the limiting ring tube 30. Two sliders 31 are disposed in the limiting ring tube 30. The two sliders 31 are respectively located in the two parts of the limiting ring tube 30 separated by the partition block 50, and the sliders 31 are fixedly connected to the reversing rope 33.

[0037] Each slider 31 is connected to a bending adjustment rope 22. The ends of the two bending adjustment ropes 22 away from the sliders 31 extend from the notch positions of the corresponding limiting ring tubes 30 and are then sleeved inside the first guide ring tube 20. It is understandable that the bending adjustment ropes 22 can slide inside the first guide ring tube 20 to adapt to the sliding of the first adjustment block 21. By turning or rotating the second handle ring 43 in the opposite direction, the bending adjustment ropes 22 on both sides can be pulled respectively to make the guide head 10 deflect and bend in opposite directions. A matching arc connecting rod 51 is slidably installed in the limiting ring tube 30, and the two sliders 31 are respectively fixed at the two end positions of the arc connecting rod 51. The arc connecting rod 51 and the notch position for the reversing rope 33 to pass through can be staggered, so that the relative positions of the two sliders 31 can be stabilized.

[0038] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An adjustable curved guide wire structure, characterized in that: include: A wire guide rod, comprising a guide head portion and a rod portion connected to the guide head portion; A first guide ring cylinder is mounted on the rod portion, and a first adjustment block is slidably mounted in the first guide ring cylinder; A bending adjustment rope has one end mounted on the edge of the guide head portion and the other end passing through the first guide ring tube and connected to the first adjustment block.

2. The adjustable curved guide wire structure according to claim 1, characterized in that: The guide head part is equipped with a limiting ring tube sleeved on the outer periphery of the rod part, a slider connected to the bending adjustment rope is slidably installed in the limiting ring tube, the limiting ring tube is provided with a limiting sliding groove for the bending adjustment rope to pass through, a reversing rope connected to the slider is slidably installed in the limiting ring tube, and two ends of the reversing rope extend from the two ends of the limiting ring tube and extend to the rod part.

3. The adjustable curved guide wire structure according to claim 2, characterized in that: The rod is installed with a second guide ring tube, in which a second adjustment block and a driving rope fixedly connected to the second adjustment block are slidably installed, and two ends of the driving rope pass through two ends of the second guide ring tube and are connected to two ends of the reversing rope.

4. The adjustable curved guide wire structure according to claim 3, characterized in that: The rod portion is rotatably mounted with a second handle ring, and the second handle ring is connected to the second adjustment block.

5. The adjustable curved guide wire structure according to claim 4, characterized in that: The rod portion is rotatably mounted with a first handle ring, and the first handle ring is connected to the first adjustment block.

6. The adjustable curved guide wire structure according to claim 5, characterized in that: The first handle ring and the second handle ring are arranged in parallel, and one of the first handle ring and the second handle ring has a larger diameter and a smaller thickness than the other.

7. The adjustable curved guide wire structure according to claim 4, characterized in that: A handle cover is installed at a position of the rod portion close to the second handle ring, and a palm groove for inserting the palm of the hand at the thenar position is provided on the outer periphery of the handle cover, and a finger groove for inserting fingers is provided on the outer periphery of the handle cover.

8. The adjustable curved guide wire structure according to claim 3, characterized in that: Two sliders are provided, and the limiting ring tube is provided with a partition block between the two sliders. The two sliders are respectively connected to two bending adjustment ropes, and the two bending adjustment ropes are respectively inserted into the first guide ring tube at one end away from the slider and connected.

9. The adjustable curved guide wire structure according to claim 8, characterized in that: An arc connecting rod is slidably installed in the limiting ring cylinder, and two ends of the arc connecting rod are respectively connected to the two sliding blocks.

10. The adjustable curved guide wire structure according to claim 3, characterized in that: The sliding block is a sphere.

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