Bidirectional bending-adjustable handle and bending-adjustable catheter sheath

Abstract

The invention relates to the technical field of medical equipment, in particular to a bidirectional bending-adjustable handle and a bending-adjustable catheter sheath, the medical equipment comprises an adjusting tube, a restraint plate, a pull rope, an adjusting handle, a pushing block and a bending tube sleeve; an operator pulls different pull ropes to enable the adjusting tube to be bent at different positions, so that in the using process of the adjusting tube, even if the adjusting tube is inserted into a branch blood vessel in a staggered mode, the adjusting tube can exit from selection again and then is adjusted to a correct path; the adjusting handle can bend the adjusting pipe in different directions by controlling the rotating direction of the adjusting ring, control and adjustment of bending of the front section of the adjusting pipe are achieved, good practicability and economical efficiency are achieved, and application and popularization of equipment are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a bidirectional adjustable bending handle and an adjustable bending catheter sheath. Background Art

[0002] Existing blood vessel catheters mainly select different blood vessels to access through end control for liquid conduction or drug delivery to complete access or exit. However, since they can only be bent at the end, the adjustment area is extremely small, and the rear end is a straight tube, making it difficult to access blood vessels. At the same time, due to the complexity of blood vessels, it is very easy to access the wrong area in some regions, resulting in the need to re-withdraw the catheter. After that, it is necessary to rely on muscle or passive extrusion to select the correct blood vessel entrance. After multiple withdrawals, there is a risk of tearing the blood vessel entrance, causing secondary damage. Summary of the Invention

[0003] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a bidirectional adjustable bending handle and an adjustable bending catheter sheath that can have a relatively long bending path and can realize bending in different regions to re-select the blood vessel entrance after withdrawing the end.

[0004] The technical solution adopted by the present invention is as follows: An adjustable bending catheter sheath includes an adjustment tube. One end of the adjustment tube is provided with a terminal buckle plate. Symmetrical side planes are provided on both sides of the adjustment tube. A plurality of restraint plates are provided at one end of the side plane away from the terminal buckle plate. Symmetrically arranged support ribs and a plurality of tension ropes are provided on both sides of the side plane. The lengths of the plurality of tension ropes decrease in sequence. One ends of the plurality of tension ropes and the support ribs are arranged on the side of the terminal buckle plate close to the restraint plate. The support rib penetrates through the plurality of restraint plates. The tension rope penetrates through and is slidably connected to multiple groups of the restraint plates along the direction away from the terminal buckle plate. One end of the tension rope away from the terminal buckle plate is fixedly connected to the adjacent restraint plate.

[0005] In one embodiment, a return spring is provided between the tension rope and the terminal buckle plate. One end of the return spring is fixedly connected to the tension rope, and the other end of the return spring is fixedly connected to the terminal buckle plate.

[0006] In one embodiment, the outer periphery of the adjustment tube provided with the plurality of restraint plates is wrapped with a bending tube sleeve, and the material of the bending tube sleeve is silica gel.

[0007] In one embodiment, a plurality of adjustment rings are provided in the middle of the adjustment tube. The adjustment tube penetrates through the center of the adjustment ring. A wire hook is provided in the middle of the tension rope. The wire hooks on the symmetrically arranged tension ropes in the same group are fixedly connected to the same adjustment ring. The wire hook is used to pull the middle part of the tension rope to wind around the outer periphery of the adjustment tube.

[0008] In one embodiment, the hooking member includes a rotating block, one side of the rotating block is rotatably connected to the connecting plate, the connecting plate is fixedly connected to the adjacent adjustment ring, an extension ring rod is provided in the middle of the rotating block, the extension ring rod has an arc-shaped long rod structure, the extension ring rod surrounds the outer side of the adjustment tube, the middle of the adjacent tension rope is rotated around the outer side of the extension ring rod, and the connecting plate is provided with a clamping rod on the same side of the extension ring rod around which the tension rope is rotated.

[0009] In one embodiment, the number of the plurality of tension ropes is the same as the number of the adjustment rings, and any group of the symmetrically arranged hooking members on both sides of the adjustment tube corresponds to a group of the adjustment rings.

[0010] In one embodiment, a bidirectional adjustable bending handle is also included, including an adjustment handle, the adjustment handle includes a handle tube, the handle tube is sleeved with a plurality of the adjustment rings, a plurality of inclined push plates are provided on the outer side of the adjustment ring, and the plurality of inclined push plates are axially symmetrically arranged on the adjustment ring, an arc-shaped protrusion is provided on the outer side of the adjustment ring, the arc-shaped protrusions of the plurality of adjustment rings are arranged at intervals, the arc-shaped protrusions are arranged on the inner side of the handle tube, side buckle plates are provided on both sides of the arc-shaped protrusion, and the side buckle plates are arranged along the axis of the adjustment tube. Extending in the direction, the side buckle plate presents an L-shaped structure, the two groups of side buckle plates are symmetrically arranged, a sliding plate is provided between the two groups of side buckle plates, side grooves are provided on both sides of the sliding plate, the side buckle plate passes through and is slidably connected to the adjacent side grooves, a plurality of magnetic lifting plates are evenly arranged on the side of the sliding plate close to the inner cavity of the handle tube, the magnetic lifting plates penetrate through and are slidably connected to the sliding plate, and the magnetic lifting plates abutted by the outer arc surface of the side groove pass between the two adjacent groups of inclined push plates.

[0011] In one embodiment, the handle tube is made of iron, and the magnetic lifting plate is adsorbed on the handle tube.

[0012] In one embodiment, an adjustment groove is provided at the end of the sliding plate on the projection side of the surface adjacent to the handle tube, and a push block is provided on the adjustment groove. The push block passes through and is slidably connected to the adjustment groove. A toggle column is provided on the side of the push block close to the sliding plate, and the toggle column is arranged between the two groups of magnetic lifting plates.

[0013] In one embodiment, limit plates are provided on both sides of the adjustment ring, the limit plates are fixedly connected to the side plane, and the adjustment ring is slidably connected to the inclined push plate.

[0014] The beneficial effects of the present invention are as follows: the present invention is a bidirectionally adjustable curved handle and an adjustable curved catheter sheath that can have a relatively long curved path and can achieve regional bending to withdraw the end portion and reselect the blood vessel entrance. The specific implementation method thereof is as follows:

[0015] After the operator first passes the adjustment tube into the blood vessel, the part of the adjustment tube can be further bent due to the guiding effect of the blood vessel wall. Then, while selecting a fork in the blood vessel, the operator rotates the adjustment ring corresponding to the tension rope near the end of the adjustment tube. Driven by the adjustment ring, the tension rope on the hook wire piece at one end pulls the extension ring rod to drive the extension ring rod to move closer to the clamping rod, while the other end moves away. While moving closer, the clamping rod and the extension ring rod clamp the tension rope and fix it. When the adjustment ring rotates, the constraint plate fixedly connected to the end of the tension rope is driven to move closer to the end buckle plate to achieve the bending of the end. The other end moving away causes the tension rope to move to the fixed area of the extension ring rod and has a tendency similar to sliding out of the extension ring rod, so that the tension rope pulls the reset spring to lengthen, thereby avoiding breaking the tension rope. After the end is adjusted to the correct blood vessel, the adjustment ring can be reset, and the tension rope at the other end moving away is acted upon by the reset spring to return to its position, and then is restored by the tension rope at both ends of the adjustment tube and the supporting ribs.

[0016] If the end is incorrectly connected, there is no need to withdraw the adjustment tube. Rotate the adjustment rings in other areas so that the adjustment rings drive the tension ropes in different areas to pull toward the end buckle plate. Since the lengths of the tension ropes are different, the distances from the pulled constraint plate to the end buckle plate are different, so the rotated ends are different, so the middle part of the adjustment tube can be bent while other areas can also be bent. This makes it convenient to withdraw the end of the adjustment tube from the wrong area and reselect it after the incorrect blood vessel is inserted without re-withdrawing the adjustment tube.

[0017] In order to achieve independent control of multiple adjustment rings, the pushing block is pushed to slide in the adjustment groove, driving the toggle column to toggle the magnetic lifting plate adsorbed to the inside of the handle tube, further driving the sliding plate to slide in the guide direction of the side buckle plate. While the sliding plate slides, the arc-shaped protrusion next to the adjustment ring pushes the magnetic lifting plate away from the inner wall of the handle tube, causing the magnetic lifting plate to pass between the oblique push plates of the adjustment ring. When the sliding plate slides, the magnetic lifting plate inside the oblique push plate pushes the oblique push plate to slide, causing the adjustment ring to rotate. Different moving directions of the sliding plate can realize the rotation of the adjustment ring in different directions, thereby realizing independent control of the bending of different areas of the adjustment tube.

[0018] The device has a simple structure and effectively utilizes the tension of tension ropes of different lengths to achieve bending control of different areas of the adjustment tube. It can also realize multi-area independent control and two-way control, has good practicality and economy, and is beneficial to the promotion and use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the end section three-dimensional structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the middle section of the present invention;

[0024] Figure 5 It is a second schematic diagram of the central cross-section three-dimensional structure of the present invention;

[0025] Figure 6 It is a third schematic diagram of the central cross-section three-dimensional structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the hooking member of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the adjustment ring part of the present invention;

[0028] Figure 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the adjustment handle of the present invention;

[0029] Figure 10 It is a second cross-sectional three-dimensional structural schematic diagram of the adjustment handle of the present invention;

[0030] Figure 11 It is a schematic diagram of the three-dimensional structure of the return spring of the present invention;

[0031] Figure 12 It is a schematic diagram of the three-dimensional structure of the end buckle plate of the present invention.

[0032] Description of the drawings: 1. Adjustment tube; 11. Side plane; 12. Constraint plate; 13. Support rib; 14. Tension rope; 141. Reset spring; 142. End buckle plate; 15. Adjustment ring; 151. Oblique push plate; 152. Limit plate; 16. Rotation block; 161. Connecting plate; 162. Extension ring rod; 163. Clamping rod; 2. Adjustment handle; 21. Handle tube; 211. Arc-shaped protrusion; 22. Sliding plate; 221. Side groove; 222. Side buckle plate; 23. Magnetic lifting plate; 24. Adjustment groove; 25. Push block; 251. Toggle column; 3. Bending sleeve. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed present invention, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0035] The following will be combined with Figures 1-12 Describe the specific implementation manner of the present invention. An adjustable bending catheter sheath includes an adjustment tube 1. One end of the adjustment tube 1 is provided with an end fastener 142. The end fastener 142 has the same opening as the adjustment tube 1 and can be used to introduce a complex catheter or directly used. Symmetrical side planes 11 are provided on both sides of the adjustment tube 1, forming a rectangular tubular structure with an arc-shaped edge. A plurality of restraint plates 12 are provided at one end of the side plane 11 away from the end fastener 142. The specific number is not unique and can be referred to according to actual usage requirements. Symmetrically arranged support ribs 13 and a plurality of tension ropes 14 are provided on both sides of the side plane 11. The support ribs 13 can be bent, but have a supporting effect on keeping the adjustment tube 1 straight. The number of the tension ropes 14 in the attached drawings is six, which can be referred to according to actual usage conditions. The lengths of the plurality of tension ropes 14 decrease in sequence. One ends of the plurality of tension ropes 14 and the support ribs 13 are arranged on the side of the end fastener 142 close to the restraint plates 12. The support ribs 13 penetrate through the plurality of restraint plates 12. The tension ropes 14 penetrate and are slidably connected to multiple groups of restraint plates 12 along the direction away from the end fastener 142. The tension ropes 14 with different lengths can penetrate through different numbers of restraint plates 12. One end of the tension rope 14 away from the end fastener 142 is fixedly connected to the adjacent restraint plate 12. Further, a return spring 141 is provided between the tension rope 14 and the end fastener 142. One end of the return spring 141 is fixedly connected to the tension rope 14, and the other end of the return spring 141 is fixedly connected to the end fastener 142.

[0036] Further, a bending tube sleeve 3 is wrapped around the outer periphery of the adjustment tube 1 where the plurality of restraint plates 12 are provided. The material of the bending tube sleeve 3 is silicone.

[0037] Beneficial, several adjusting rings 15 are provided in the middle of the adjusting tube 1. The adjusting tube 1 passes through the center of the adjusting rings 15. A wire-hooking member is provided in the middle of the tension rope 14. The wire-hooking members on the symmetrically arranged tension ropes 14 in the same group are fixedly connected to the same adjusting ring 15. The wire-hooking member is used to pull the middle part of the tension rope 14 to wind around the outer side of the adjusting tube 1; the wire-hooking member includes a rotating block 16. One side of the rotating block 16 is rotatably connected to a connecting plate 161. The connecting plate 161 is fixedly connected to the adjacent adjusting ring 15. An extended ring rod 162 is provided in the middle of the rotating block 16. The extended ring rod 162 presents an arc-shaped long rod structure. The extended ring rod 162 surrounds the outer side of the adjusting tube 1. The middle part of the adjacent tension ropes 14 winds around the outer side of the extended ring rod 162 for one week. The connecting plate 161 is provided with a clamping rod 163 on the same side of the extended ring rod 162 around which the tension rope 14 is wound.

[0038] In implementation, in the case of an end-pass error, there is no need to withdraw the adjusting tube 1. Rotate the adjusting rings 15 in other areas so that the adjusting rings 15 drive the tension ropes 14 in different areas to pull towards the end buckle 142. Since the lengths of the several tension ropes 14 are different, the distances from the corresponding restraint plates 12 pulled to the end buckle 142 are different, and the rotated ends are different. Thus, while bending the middle part of the adjusting tube 1 can be achieved, bending in other areas can also be realized. It is convenient to withdraw the end of the adjusting tube 1 from the wrong area and reselect without the need to withdraw the adjusting tube 1 again after wrongly entering the blood vessel.

[0039] Further, the number of several tension ropes 14 is the same as that of several adjusting rings 15. The wire-hooking members symmetrically arranged in any group on both sides of the adjusting tube 1 respectively correspond to a group of adjusting rings 15.

[0040] Further, a two-way adjustable bending handle is also provided: including an adjusting handle 2. The adjusting handle 2 includes a handle tube 21. The handle tube 21 is sleeved with several adjusting rings 15. Several inclined push plates 151 are provided on the outer side of the adjusting rings 15. The several inclined push plates 151 are arranged axially symmetrically on the adjusting rings 15. An arc-shaped protrusion 211 is provided on the outer side of the adjusting rings 15. The arc-shaped protrusions 211 of the several adjusting rings 15 are arranged at intervals. The arc-shaped protrusion 211 is arranged inside the handle tube 21. Side buckle plates 222 are provided on both sides of the arc-shaped protrusion 211. The side buckle plates 222 extend along the axis direction of the adjusting tube 1. The side buckle plates 222 present an L-shaped structure. Two groups of side buckle plates 222 are symmetrically arranged. A sliding plate 22 is provided between the two groups of side buckle plates 222. Side grooves 221 are provided on both sides of the sliding plate 22. The side buckle plates 222 are inserted into and slidably connected to the adjacent side grooves 221. A plurality of magnetic lifting plates 23 are evenly arranged on the side of the sliding plate 22 close to the inner cavity of the handle tube 21. The magnetic lifting plates 23 penetrate and are slidably connected to the sliding plate 22. The magnetic lifting plates 23 abutted by the outer arc surface of the side groove 221 are inserted between the adjacent two groups of inclined push plates 151.

[0041] Beneficially, the handle tube 21 is made of iron, the magnetic lifting plate 23 is adsorbed on the handle tube 21, and the end of the sliding plate 22 is provided with an adjustment groove 24 on the projection side of the surface close to the handle tube 21, and a push block 25 is provided on the adjustment groove 24, and the push block 25 passes through and is slidably connected to the adjustment groove 24. A toggle column 251 is provided on the side of the push block 25 close to the sliding plate 22, and the toggle column 251 is arranged between the two groups of magnetic lifting plates 23. Limit plates 152 are provided on both sides of the adjustment ring 15, and the limit plates 152 are fixedly connected to the side plane 11, and the adjustment ring 15 is slidably connected to the inclined push plate 151.

[0042] In practice, by pushing the pushing block 25 to slide in the adjustment groove 24, the toggle column 251 is driven to toggle the magnetic lifting plate 23 adsorbed to the inside of the handle tube 21, further driving the sliding plate 22 to slide in the guide direction of the side buckle plate 222. While the sliding plate 22 slides, the arc-shaped protrusion 211 next to the adjustment ring 15 pushes the magnetic lifting plate 23 away from the inner wall of the handle tube 21, causing the magnetic lifting plate 23 to pass between the inclined push plates 151 of the adjustment ring 15. When the sliding plate 22 slides, the magnetic lifting plate 23 in the inclined push plate 151 pushes the inclined push plate 151 to slide, causing the adjustment ring 15 to rotate. The different moving directions of the sliding plate 22 can realize the rotation of the adjustment ring 15 in different directions, thereby realizing independent control of the bending of different areas of the adjustment tube 1.

[0043] Working principle of the present invention:

[0044] After the operator first passes the adjustment tube 1 into the blood vessel, the operator can further bend part of the adjustment tube 1 due to the guiding effect of the blood vessel wall. Then, while selecting a fork in the blood vessel, the operator rotates the adjustment ring 15 corresponding to the tension rope 14 near the end of the adjustment tube 1. Driven by the adjustment ring 15, the tension rope 14 on the hook piece at one end pulls the extension ring rod 162 to drive the extension ring rod 162 to move closer to the clamping rod 163, while the other end moves away. While moving closer, the clamping rod 163 and the extension ring rod 162 clamp the tension rope 14 and fix it. When the adjustment ring 15 rotates, it drives the end of the tension rope 14 The fixedly connected constraint plate 12 moves closer to the end buckle plate 142 to achieve end bending, and the other end moves away, causing the tension rope 14 to move to the fixed area of the extension ring rod 162 and have a tendency to slide out of the extension ring rod 162, so that the tension rope 14 pulls the reset spring 141 to become longer, thereby avoiding the tension rope 14 from breaking; when the end is adjusted to the correct blood vessel after adjustment, the adjustment ring 15 can be reset, and the tension rope 14 with the other end away is acted upon by the reset spring 141 to return to its original position, and is then restored by the action of the tension rope 14 at both ends of the adjustment tube 1 and the support ribs 13.

[0045] If the end is incorrectly passed, there is no need to withdraw the adjustment tube 1. Rotate the adjustment ring 15 in other areas so that the adjustment ring 15 drives the tension ropes 14 in different areas to pull toward the end buckle plate 142. Since the lengths of the tension ropes 14 are different, the distances from the pulled constraint plate 12 to the end buckle plate 142 are different, and the rotated ends are different. This can achieve bending of the middle part of the adjustment tube 1 while other areas can also be bent. This makes it convenient to withdraw the end of the adjustment tube 1 from the wrong area and reselect after the incorrect blood vessel is inserted without re-withdrawing the adjustment tube 1.

[0046] In order to achieve independent control of multiple adjustment rings 15, by pushing the pushing block 25 to slide in the adjustment groove 24, the toggle column 251 is driven to toggle the magnetic lifting plate 23 adsorbed to the inside of the handle tube 21, further driving the sliding plate 22 to slide in the guide direction of the side buckle plate 222. While the sliding plate 22 slides, the arc-shaped protrusion 211 next to the adjustment ring 15 pushes the magnetic lifting plate 23 away from the inner wall of the handle tube 21, causing the magnetic lifting plate 23 to pass between the oblique push plates 151 of the adjustment ring 15. When the sliding plate 22 slides, the magnetic lifting plate 23 in the oblique push plate 151 pushes the oblique push plate 151 to slide, causing the adjustment ring 15 to rotate. The different moving directions of the sliding plate 22 can realize the rotation of the adjustment ring 15 in different directions, thereby realizing independent control of the bending of different areas of the adjustment tube 1.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The above contents are merely examples and explanations of the structure of the present invention. The technicians in the technical field of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. An adjustable deflectable catheter sheath, characterized in that: It includes an adjusting pipe (1). One end of the adjusting pipe (1) is provided with an end buckle plate (142). Symmetrical side planes (11) are provided on both sides of the adjusting pipe (1). Several restraint plates (12) are provided at one end of the side plane (11) away from the end buckle plate (142). Symmetrically arranged support ribs (13) and several tension ropes (14) are provided on both sides of the side plane (11). The lengths of the several tension ropes (14) decrease in sequence. One ends of the several tension ropes (14) and the support ribs (13) are arranged on the side of the end buckle plate (142) close to the restraint plate (12). The support ribs (13) penetrate through the several restraint plates (12). The tension ropes (14) penetrate and are slidably connected to multiple groups of the restraint plates (12) along the direction away from the end buckle plate (142). One ends of the tension ropes (14) away from the end buckle plate (142) are fixedly connected to the adjacent restraint plates (12).

2. The adjustable bending catheter sheath according to claim 1, wherein: A return spring (141) is provided between the tension rope (14) and the end buckle plate (142). One end of the return spring (141) is fixedly connected to the tension rope (14), and the other end of the return spring (141) is fixedly connected to the end buckle plate (142).

3. The adjustable bending catheter sheath according to claim 1, wherein: A bending pipe sleeve (3) is wrapped around the periphery of the adjusting pipe (1) where several restraint plates (12) are provided. The material of the bending pipe sleeve (3) is silicone.

4. The adjustable bending catheter sheath according to claim 2, wherein: Several adjusting rings (15) are provided in the middle of the adjusting pipe (1). The adjusting pipe (1) penetrates through the centers of the adjusting rings (15). A wire-hooking member is provided in the middle of the tension rope (14). The wire-hooking members on the symmetrically arranged tension ropes (14) in the same group are fixedly connected to the same adjusting ring (15). The wire-hooking member is used to pull the middle of the tension rope (14) to wind around the outer periphery of the adjusting pipe (1).

5. The adjustable deflectable catheter sheath according to claim 4, wherein: The wire-hooking member includes a rotating block (16). One side of the rotating block (16) is rotatably connected to the connecting plate (161). The connecting plate (161) is fixedly connected to the adjacent adjusting ring (15). An extended ring rod (162) is provided in the middle of the rotating block (16). The extended ring rod (162) has an arc-shaped long rod structure. The extended ring rod (162) surrounds the outer periphery of the adjusting pipe (1). The middle of the adjacent tension rope (14) winds around the outer periphery of the extended ring rod (162) for one week. A clamping rod (163) is provided on the same side of the connecting plate (161) as the extended ring rod (162) around which the tension rope (14) is wound.

6. The adjustable bending catheter sheath according to claim 5, wherein: The number of the several tension ropes (14) is the same as that of the several adjusting rings (15). The wire-hooking members symmetrically arranged in any group on both sides of the adjusting pipe (1) respectively correspond to one group of the adjusting rings (15).

7. A bidirectional adjustable bending handle, which uses an adjustable bending catheter sheath as described in claim 6, and is characterized in that: It includes an adjustment handle (2), and the adjustment handle (2) includes a handle tube (21). A number of the adjustment rings (15) are sleeved on the handle tube (21). A number of inclined push plates (151) are provided on the outer peripheral side of the adjustment ring (15). The number of the inclined push plates (151) is axially symmetrically arranged on the adjustment ring (15). An arc-shaped protrusion (211) is provided on the outer peripheral side of the adjustment ring (15). The arc-shaped protrusions (211) of the number of the adjustment rings (15) are arranged at intervals. The arc-shaped protrusion (211) is arranged inside the handle tube (21). Side buckling plates (222) are provided on both sides of the arc-shaped protrusion (211). The side buckling plates (222) extend along the axis direction of the adjustment tube (1). The side buckling plates (222) are in an L-shaped structure. Two groups of the side buckling plates (222) are symmetrically arranged. A sliding plate (22) is provided between the two groups of the side buckling plates (222). Side slots (221) are provided on both sides of the sliding plate (22). The side buckling plates (222) are inserted into and slidably connected to the adjacent side slots (221). A number of magnetic lifting plates (23) are evenly arranged on one side of the sliding plate (22) close to the inner cavity of the handle tube (21). The magnetic lifting plates (23) penetrate through and are slidably connected to the sliding plate (22). The magnetic lifting plates (23) abutted against the outer arc surface of the side slot (221) are inserted between two adjacent groups of the inclined push plates (151).

8. The two-way adjustable bending handle according to claim 7, wherein: The handle tube (21) is made of iron, and the magnetic lifting plates (23) are adsorbed on the handle tube (21).

9. The two-way adjustable bending handle according to claim 8, wherein: An adjustment slot (24) is provided on the projection side of the end of the sliding plate (22) close to the surface of the handle tube (21). A push block (25) is provided on the adjustment slot (24). The push block (25) penetrates through and is slidably connected to the adjustment slot (24). A toggle column (251) is provided on one side of the push block (25) close to the sliding plate (22). The toggle column (251) is arranged between two groups of the magnetic lifting plates (23).

10. The two-way adjustable bending handle according to claim 7, characterized in that: Limit plates (152) are provided on both sides of the adjustment ring (15). The limit plates (152) are fixedly connected to the side plane (11). The adjustment ring (15) is slidably connected to the inclined push plate (151).

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