Adjustable bend guidewire device

Abstract

The present application relates to the technical field of medical devices, and discloses an adjustable bending guide wire device, which comprises a guide wire structure, a proximal end close to an operator and a distal end away from the operator, a mandrel and a spring, the spring being sleeved on the outer periphery of the mandrel, the distal end of the mandrel being provided with a bending section, the proximal end of the mandrel and the spring being connected to form a first connection point, the distal end of the mandrel and the spring being connected to form a second connection point, and the position close to the distal end of the mandrel and the spring being connected to form a third connection point, a base frame through which the guide wire structure passes, the base frame being connected with the spring, a driving structure comprising a sliding member and a driving member, the driving member being suitable for driving the sliding member to slide, and a limiting structure provided on the base frame and used for driving a limiting member to slide and limiting the limiting member, so that the problems of the guide wire structure, such as the risk of increasing the operation risk due to the increase of the hardness of the tip of the guide wire structure during the straightening process of the guide wire structure, the disconnection of the connecting part of the mandrel and the spring when the guide wire structure is excessively straightened, and the invalidation of the guide wire structure, are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an adjustable bending guide wire device. BACKGROUND

[0002] The guide wire device is a medical device for surgery, which is used to guide other devices into blood vessels, position in blood vessels or establish a blood vessel access by extending a guide wire into the blood vessel. Since there are many branches of blood vessels in the human body, and the extension direction and bending angle are different, in order to better penetrate the blood vessels to complete the surgery, some guide wires can be adjusted to bend, and the bending degree of the front end of the guide wire is adjusted to match the guide wire with the blood vessel of the target position, so as to facilitate the surgical operation.

[0003] In the related art, the guide wire device includes a guide wire structure and a handle, and the guide wire structure includes a core shaft and a spring. The spring is an elastic member that can be stretched and contracted, and the core shaft is an elastic member that is bent away from the handle at one end in a natural state. The core shaft and the spring are connected to each other at the end away from the handle. When the guide wire is pulled, the core shaft is pulled, and at the same time, the spring is compressed towards the end to be taut, thereby straightening the front end of the guide wire. After the pulling force on the spring is removed, the guide wire returns to the bent state.

[0004] However, in the above embodiment, the bending degree of the guide wire is adjusted by pulling the spring to make the spring and the core shaft move relatively, so that the bending degree of the guide wire is adjusted. When the core shaft is straightened, the elastic force of the spring is transmitted to the core shaft, and the core shaft is taut during the straightening process, so that the hardness of the end of the core shaft increases with the straightening amplitude. The increase in the hardness of the end of the core shaft can easily cause the blood vessel to be punctured, increasing the risk of surgery. At the same time, if the spring is pulled too much, the straightening degree of the core shaft and the hardness of the core shaft can also increase, which can cause the core shaft and the spring to be disconnected, and the guide wire structure to fail. SUMMARY

[0005] Therefore, the present application provides an adjustable bending guide wire device to solve the problem that the hardness of the tip of the guide wire structure increases during the straightening process, which can easily cause the blood vessel to be punctured and increase the risk of surgery, and the core shaft and the spring can be disconnected when the straightening is too much, causing the guide wire to fail.

[0006] The application provides a bendable guide wire device, which comprises a guide wire structure, a base frame and a driving structure, wherein the guide wire structure has a proximal end close to an operator and a distal end away from the operator, and comprises a mandrel and a spring, the spring is sleeved on the outer periphery of the mandrel, the distal end of the mandrel is provided with an arc-shaped bending section, the proximal end of the mandrel and the spring are connected to form a first connection point, the distal end of the mandrel and the spring are connected to form a second connection point, and the position of the mandrel and the spring close to the distal end is connected to form a third connection point; the end of the bending section close to the proximal end is a starting end, the third connection point is located between the starting end of the bending section and the distal end of the mandrel; the guide wire structure passes through the base frame, the base frame is connected with the spring; the driving structure is arranged on the base frame and comprises a sliding piece and a driving piece, the sliding piece is connected with the spring, the sliding piece is connected with the guide wire structure and is suitable for driving the relative movement of the guide wire and the base frame, and the driving piece is suitable for driving the sliding of the sliding piece; the limiting structure is arranged on the base frame and is used for limiting the sliding piece.

[0007] Beneficial effects: the two ends of the mandrel are connected with the different ends of the spring respectively, so that the mandrel is stably connected with the spring, the curved section of the mandrel is in a curved state without external force, when the operator operates the spring, the part of the distal end of the spring is stretched, due to the third connecting point, the elastic force of the spring is transmitted to the mandrel through the third connecting point, rather than through the first connecting point, so that the part between the third connecting point of the mandrel and the distal end of the mandrel is not affected by the elastic force of the spring, and the tightening effect does not occur, so that the hardness of the end of the mandrel is improved, and the blood vessel is pierced. At the same time, the guide wire structure is connected with the sliding block on the base frame and the driving structure respectively, so that the guide wire structure is driven by operating the driving part of the driving structure, and the spring is pulled in the sliding process of the sliding block in the operation process, so that the bending and straightening operations of the guide wire structure are realized. The limiting structure is arranged to limit the sliding range of the sliding block, so as to limit the amplitude of the medical staff to straighten and bend the guide wire structure, so as to avoid the situation that the spring and the connecting part of the mandrel are separated due to excessive straightening, and the guide wire structure is invalid. In addition, by limiting the amplitude of the guide wire structure to straighten and bend, a curved state can be calibrated during the operation, for example, in the actual operation process, when the guide wire structure is located outside the patient's body, the medical staff can obtain the blood vessel angle of the target position according to the angiography and other related means, and then adjust the position of the sliding block by the driving part to bend the guide wire structure to the target curvature, and then adjust the adjusting part to limit the sliding position of the sliding block, so that the maximum straightening amplitude is the current state, and then the guide wire structure is inserted into the blood vessel. In the subsequent operation process, although the driving part may be adjusted again to increase the curvature of the guide wire structure, the medical staff can quickly reset the guide wire structure to the bending amplitude outside the body according to the limiting of the limiting structure to the sliding block, which is very convenient. And because of the limitation of the maximum straightening amplitude, the medical staff can operate safely without worrying about the failure of the guide wire structure.

[0008] In an alternative embodiment, it further comprises a first connecting part and a second connecting part, the first connecting part is arranged on the sliding block and used for limiting the spring of the guide wire structure, and the second connecting part is arranged on the base frame and used for limiting the spring of the guide wire structure.

[0009] Beneficial effects: by arranging the first connecting part and the second connecting part, the guide wire structure is connected with the sliding block on the base frame and the driving structure respectively, so that the guide wire structure is driven by operating the driving part of the driving structure, and the spring is pulled in the sliding process of the sliding block in the operation process, so that the bending and straightening operations of the guide wire structure are realized.

[0010] In an alternative embodiment, the limiting structure comprises a limiting piece and an adjusting piece, the limiting piece is in sliding connection with the base frame, the sliding track of the sliding piece and the limiting piece are on the same straight line, the sliding piece is provided with a limiting rod extending along the sliding direction of the sliding piece, the limiting rod penetrates through the limiting piece, the circumferential side of the limiting rod is provided with a limiting block, the limiting piece is provided with an abutting portion, and the abutting portion is adapted to block the limiting block so as to limit the sliding range of the sliding piece.

[0011] Beneficial effects: the limiting rod penetrates through the limiting piece, and the limiting piece cooperates with the limiting block to limit the sliding piece, the sliding block and the limiting block can be spaced apart and independently in sliding cooperation with the base frame, the limiting block can limit the sliding block on the sliding track, and the sliding track of the limiting block and the sliding block is avoided from overlapping, thereby reducing the production and assembly difficulty.

[0012] In an alternative embodiment, the sliding piece comprises a first driving column and a first sliding block, the first sliding block is arranged on the first driving column and is in sliding cooperation with the base frame, the first connecting piece is arranged at the end of the first driving column, the base frame is provided with a first sliding cavity matched with the first sliding block, and the first sliding block is located in the first sliding cavity.

[0013] Beneficial effects: the first sliding block is arranged on the sliding piece to realize the sliding cooperation between the sliding piece and the base frame, meanwhile, the arrangement of the first driving column ensures that the first sliding block has a small volume, provides a structural basis for the cooperation between the sliding piece and the driving piece, and provides a structural basis for the movement of the guide wire structure driven by the sliding piece, the arrangement of the first sliding cavity provides a stable sliding track for the first sliding block and limits the sliding distance of the first sliding block, thereby avoiding that the sliding distance is too long to cause the cooperation failure between the sliding piece and the driving piece or the guide wire structure is excessively driven to cause the operation risk and the possibility of guide wire structure failure.

[0014] In an alternative embodiment, the driving piece is in rotational connection with the base frame and is in threaded connection with the first driving column, and the first driving column drives the first sliding block to slide in the case that the driving piece rotates.

[0015] Beneficial effects: the driving piece is in rotational connection with the base frame and is in threaded cooperation with the sliding piece, the sliding piece slides along the sliding track under the driving of the thread when the driving piece rotates, and the thread provides a positioning effect for the sliding piece, thereby reducing the sliding of the sliding piece due to operation errors during the operation process and reducing the risk of operation misoperation.

[0016] In an alternative embodiment, the limiting member comprises a second driving column and a second sliding block, the second sliding block is in sliding fit with the second driving column and the base frame, the base frame is provided with a second sliding cavity adapted to the second sliding block, and the second sliding block is located in the second sliding cavity.

[0017] Beneficial effects: through the sliding fit of the second sliding block and the base frame, the sliding fit of the limiting member and the base frame is realized, and through the provision of the second driving column, a structural basis is provided for the fit between the limiting member and the adjusting member, through the provision of the second sliding cavity adapted to the second sliding block, a stable sliding track is provided for the sliding of the second sliding block, and at the same time, the sliding distance of the second sliding block is limited, preventing the limiting member from being separated from the adjusting member due to excessive operation of medical staff, resulting in adjustment failure.

[0018] In an alternative embodiment, the adjusting member is rotationally connected with the base frame and threadedly connected with the limiting member, and under the rotation of the limiting member, the second driving column drives the second sliding block to slide.

[0019] Beneficial effects: through the provision of the rotationally connected adjusting member and the base frame, and the threadedly connected limiting member, when the adjusting member is rotated, the limiting member is driven to slide along the sliding track, and the thread connection provides a positioning effect for the limiting member, and under the condition that the medical staff does not rotate the adjusting member, the limiting member will not slide randomly due to being pushed, thereby realizing the stable limitation of the sliding range of the sliding member.

[0020] In an alternative embodiment, one end of the arc-shaped bending section close to the distal end of the mandrel is a terminal end, a straight section is provided on the mandrel between the terminal end and the distal end of the mandrel, and the third connection point is located between the terminal end and the distal end of the mandrel.

[0021] Beneficial effects: when the operator operates the spring, the spring transmits the elastic force to the mandrel through the third connection point, thereby exerting an elastic force on the mandrel between the third connection point and the starting end of the bending section, forcing the bending section to be stretched straight, and then blocking the stress transmission on the mandrel through the third connection point, preventing the hardness of the straight section from being improved, avoiding the hardness of the sharp end away from the third connection point on the straight section from being improved, thereby reducing the risk of puncturing blood vessels.

[0022] In an alternative embodiment, the third connection point is provided at the terminal end of the bending section.

[0023] Beneficial effects: by locating the third connection point at the junction of the straight section and the bending section instead of on the bending section, the hardness of the sharp end is prevented from being improved, and at the same time, the situation that the bending section cannot be completely stretched straight due to the blocked stress transmission is avoided, ensuring the adjustment range of the sharp end of the guide wire structure.

[0024] In an alternative embodiment, the third connection point is located on the curved segment.

[0025] Beneficial effect: By setting the third connection point on the curved segment, the maximum range of the operator's adjustment of the guide wire is limited, which can control the angle of the guide wire structure during the straightening process, thereby being suitable for some environments requiring fixed guide wire angle. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 The adjustable bending guide wire device of the present application is used to show the overall structure schematic diagram.

[0028] Figure 2 The adjustable bending guide wire device of the present application is used to show the overall schematic diagram of the guide wire structure.

[0029] Figure 3 The adjustable bending guide wire device of the present application is used to show the cross-sectional schematic diagram of the guide wire structure.

[0030] Figure 4 The adjustable bending guide wire device of the present application is used to show the schematic diagram of the spring and mandrel structure position.

[0031] Figure 5 The adjustable bending guide wire device of the present application is used to show the overall structure schematic diagram and the schematic diagram of the handle structure.

[0032] Figure 6 The adjustable bending guide wire device of the present application is used to show the schematic diagram of the handle and the adjustable bending guide wire device position relationship.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 100, base; 101, first sliding cavity; 102, second sliding cavity; 200, driving structure; 201, sliding piece; 2011, limiting rod; 2012, limiting block; 2013, first driving column; 2014, first sliding block; 202, driving piece; 300, limiting structure; 301, limiting piece; 3011, abutting portion; 3012, second driving column; 3013, second sliding block; 302, adjusting piece; 401, first connecting piece; 402, second connecting piece; 403, conical sleeve; 404, cylindrical sleeve; 405, elastic clamping jaw; 500, guide wire structure; 501, mandrel; 5011, curved section; 5012, starting end; 5013, ending end; 502, spring; 503, first connecting point; 504, second connecting point; 505, third connecting point. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] The guide wire device guides other instruments into the blood vessel by extending the guide wire structure thereof into the blood vessel, so as to realize surgical operations such as setting a stent in the blood vessel or removing a thrombus. In order to match the structure of the blood vessel, one end of the guide wire structure has a certain bending angle, and the bending angle of the end portion of the guide wire structure can be adjusted through the handle of the guide wire device.

[0037] The guide wire structure in the related art generally comprises two parts of an inner core and an outer tube, and both the inner core and the outer tube are elastic members. The end of the guide wire structure extending into the human body is a distal end, and the end close to the handle is a proximal end. The distal end portion of the inner core is in a bent state in a natural state, and can be bent and deformed greatly. The outer tube is sleeved outside the inner core, and the distal end portion of the outer tube is fixedly connected with the distal end portion of the inner core. The outer tube has good stretching and bending deformation capability, and is bent together with the inner core in a natural state. When the handle adjusts the bending angle of the guide wire structure, the handle pulls the inner core and the outer tube of the guide wire structure at the same time, and at the same time, the outer tube at a position close to the distal end side is limited. The outer tube close to the distal end portion of the handle is compressed due to being pushed, and the inner core is pulled. The inner core is gradually affected by the compressed and straightened outer tube, so as to be gradually straightened together with the outer tube.

[0038] However, the guide wire structure needs to meet at least two conditions, one is small diameter so as to be able to stretch into the blood vessel, and the other is small force of the guide wire structure front end (force of the guide wire head end bending under force) to reduce the possibility of the guide wire structure distal end piercing the blood vessel. Small diameter will result in small load that the connecting pad between the outer tube and the inner core of the guide wire structure can bear, and the connecting pad is easy to be disconnected when the medical staff over-straightens the distal end of the guide wire structure, so as to cause the guide wire to fail and easily cause danger to the patient; and in the process of gradually straightening the distal end of the guide wire structure, the outer tube is gradually compressed and straightened, so as to increase the force of the outer tube, and the risk of piercing the blood vessel is easy to occur.

[0039] The embodiments of the present application are described below in conjunction with Figures 1 to 6

[0040] According to the embodiments of the present application, in one aspect, a guide wire device is provided, please refer to Figures 1 to 4 , comprising: a guide wire structure 500, having a proximal end close to the operator and a distal end away from the operator, comprising a mandrel 501 and a spring 502, the spring 502 is sleeved on the outer periphery of the mandrel 501, the distal end of the mandrel 501 is provided with an arc-shaped bending section 5011, the proximal end of the mandrel 501 and the spring 502 is connected to form a first connecting point 503, the distal end of the mandrel 501 and the spring 502 is connected to form a second connecting point 504, the position close to the distal end of the mandrel 501 and the spring 502 is connected to form a third connecting point 505, the end of the bending section 5011 close to the proximal end is a starting end 5012, the third connecting point 505 is located between the starting end 5012 of the bending section 5011 and the distal end of the mandrel 501; a base frame 100, the guide wire structure 500 passes through the base frame 100, the base frame 100 is connected with the spring 502; a driving structure 200, provided on the base frame 100, comprising a sliding member 201 and a driving member 202, the sliding member 201 is connected with the spring 502, the sliding member 201 is connected with the guide wire structure 500 and is suitable for driving the guide wire to move relative to the base frame 100, the driving member 202 is suitable for driving the sliding member 201 to slide; a limiting structure 300, provided on the base frame 100, the limiting structure 300 is used for limiting the sliding member 201.

[0041] ​In this embodiment, the two ends of the mandrel 501 are connected to the different ends of the spring 502 respectively, so that the mandrel 501 is stably connected to the spring 502, and the curved section 5011 of the mandrel 501 is in a curved state without external force. When the operator operates the spring 502 to stretch the distal end of the spring 502, due to the third connecting point 505, the elastic force of the spring 502 is transmitted to the mandrel 501 through the third connecting point 505 instead of the first connecting point 503, so that the part between the third connecting point 505 of the mandrel 501 and the distal end of the mandrel 501 is not affected by the elastic force of the spring 502, and the tightening effect does not occur, thereby avoiding the increase of the hardness of the end of the mandrel 501, which causes the blood vessel to be pierced. At the same time, the guide wire structure 500 is connected to the sliding block 201 on the base frame 100 and the driving structure 200 respectively, so that the guide wire structure 500 is driven by operating the driving member 202 of the driving structure 200. During the operation, the spring 502 is pulled during the sliding of the sliding block 201, so that the bending and straightening operations of the guide wire structure 500 are realized. The limiting structure 300 is arranged to limit the sliding range of the sliding block 201, thereby limiting the amplitude of the straightening and bending of the guide wire structure 500 by the medical staff, so as to avoid the situation that the spring 502 and the connecting part of the mandrel 501 are separated due to excessive straightening, and the guide wire structure 500 is invalid. In addition, by limiting the amplitude of the straightening and bending of the guide wire structure 500, a curved state can also be calibrated during the operation. For example, in the actual operation process, when the guide wire structure 500 is located outside the patient's body, the medical staff obtains the blood vessel angle of the target position by means of angiography and other related means, and first adjusts the position of the sliding block 201 by the driving member 202 to bend the guide wire structure 500 to the target curvature. Then adjust the adjusting member 302 to limit the sliding position of the sliding block 201 to the current position, so that the maximum straightening amplitude is the current state, and then insert the guide wire structure 500 into the blood vessel. In the subsequent operation process, although the driving member 202 can be adjusted again to increase the curvature of the guide wire structure 500, the medical staff can quickly reset the guide wire structure 500 to the bending amplitude outside the body according to the limiting of the limiting structure 300 to the sliding block, which is very convenient. Moreover, due to the limitation of the maximum straightening amplitude, the medical staff can operate with confidence without worrying about the failure of the guide wire structure 500.

[0042] Specifically, in the above embodiment, the specific form of the base frame 100 is not limited, and the base frame 100 can be a handle shell and provide a structural basis for the installation of other structural components. In some embodiments not shown, the base frame 100 can also be a support in other forms instead of a handle shell.

[0043] In addition, specifically, in the above embodiment, the specific form of the driving member 202, the sliding member 201, the limiting member 301 and the adjusting member 302 is not limited, the sliding member 201 only needs to be able to slide on the base frame 100 and drive the guide wire to move, the driving member 202 only needs to be able to drive the sliding member 201 to slide, the limiting member 301 only needs to be able to slide on the shell, and the adjusting member 302 only needs to be able to drive the limiting member 301 to slide and position the limiting member 301 at any position in the sliding process. In some embodiments not shown, for example, the sliding member 201 is a sliding block slidingly connected to the base frame 100, the driving member 202 is a push handle fixed to the sliding block, the push handle extends from the base frame 100 to facilitate the medical staff to push, the limiting member 301 is another sliding block slidingly connected to the base frame 100, and the adjusting member 302 is fixed to the limiting member 301. A positioning screw capable of abutting against the side wall of the base frame 100 to position the base frame 100 is threadedly connected to the adjusting member 302. The medical staff adjusts the position of the limiting member 301 by pushing the adjusting member 302, and positions the limiting member 301 by abutting the positioning screw against the base frame 100.

[0044] In one embodiment, referring to Figures 4 to 6 The first connecting member 401 is arranged on the sliding member 201 and is used for limiting the spring 502 of the guide wire structure 500, and the second connecting member 402 is arranged on the base frame 100 and is used for limiting the spring 502 of the guide wire structure 500.

[0045] It should be noted that in the above embodiment, the specific form of the first connecting member 401 and the second connecting member 402 is not limited, the first connecting member 401 can be fixed, for example, the first connecting member 401 and the second connecting member 402 can include a tapered sleeve 403, the opposite ends of the tapered sleeve 403 are provided with openings, the opening end with a larger diameter of the tapered sleeve 403 has a cylindrical sleeve 404, the sleeve of the first connecting member 401 is threadedly connected with the shell, and the sleeve of the second connecting member 402 is threadedly connected with the sliding member 201. The first connecting member 401 and the second connecting member 402 further include an elastic clamping jaw 405, the elastic clamping jaw 405 of the first connecting member 401 is adapted to be on the inside of the tapered sleeve 403 of the first connecting member 401, the elastic clamping jaw 405 of the second connecting member 402 is arranged on the sliding member 201 and extends into the inside of the tapered sleeve 403 of the second connecting member 402, and the guide wire structure 500 passes through the two end openings of the tapered sleeve 403. When the tapered sleeve 403 rotates and approaches the corresponding base frame 100 or the sliding member 201, the tapered inner wall of the tapered sleeve 403 extrudes the clamping jaw, so that the clamping jaw is closed and clamps the guide wire structure 500. According to the extrusion degree of the clamping jaw by the tapered sleeve 403, the clamping jaw can clamp only the outer tube on the outside of the guide wire structure 500, or can clamp the outer tube and the inner core at the same time.

[0046] In the embodiment, the first connecting member 401 and the second connecting member 402 are arranged to connect the guide wire structure 500 with the base frame 100 and the sliding member 201 on the driving structure 200 respectively, so that the guide wire structure 500 is driven by operating the driving member 202 of the driving structure 200. During the operation, the first connecting member 401 limits the sliding member 201 and the spring 502, and the second connecting member 402 limits the spring 502 and the base frame 100, so that the spring 502 is pulled during the sliding of the sliding member 201, and the bending and straightening operations of the guide wire structure 500 are realized.

[0047] In one embodiment, referring to Figures 4 to 6 The limiting structure 300 includes a limiting member 301 and an adjusting member 302. The limiting member 301 is in sliding connection with the base frame 100. The sliding tracks of the sliding member 201 and the limiting member 301 are on the same straight line. The sliding member 201 is provided with a limiting rod 2011 extending along the sliding direction of the sliding member 201. The limiting rod 2011 penetrates through the limiting member 301. The limiting rod 2011 is provided with a limiting block 2012 on the side surface. The limiting member 301 is provided with an abutting portion 3011 adapted to block the limiting block 2012 to limit the sliding range of the sliding member 201.

[0048] Specifically, the embodiment does not limit the specific form of the limiting member 301 and the adjusting member 302. The limiting member 301 can limit the sliding range of the sliding member 201 on the base frame 100.

[0049] In the embodiment, the limiting rod 2011 penetrates through the limiting member 301, and the limiting member 301 cooperates with the limiting block 2012 to limit the sliding member 201. The sliding block and the limiting block can be spaced and independently in sliding cooperation with the base frame 100. The limiting block can limit the sliding block on the sliding track, and the sliding track of the limiting block and the sliding block is avoided from overlapping, so that the production and assembly difficulty is reduced.

[0050] It should be noted that in the operation process, the spring 502 is pulled during the sliding of the sliding member 201, the bending and straightening operations of the guide wire structure 500 are realized, the limiting structure 300 is arranged, the position of the limiting member 301 is adjusted through the adjusting member 302, the sliding range of the sliding member 201 is limited, and then the straightening and bending range of the guide wire structure 500 by the medical staff is limited, so that the spring 502 is prevented from being disconnected from the connecting part of the mandrel 501 due to excessive straightening, and the guide wire structure 500 is prevented from being disabled. In addition, by limiting the straightening and bending range of the guide wire structure 500, a bending state can also be calibrated during the operation process. For example, in the actual operation process, when the guide wire structure 500 is located outside the patient's body, the medical staff obtains the blood vessel angle of the target position through angiography and other related means, and first adjusts the position of the sliding member 201 through the driving member 202 to bend the guide wire structure 500 to the target bending degree, and then adjusts the adjusting member 302 to limit the sliding position of the sliding member 201 at this position, so that the maximum straightening range is the current state, and then the guide wire structure 500 is inserted into the blood vessel. In the subsequent operation process, although the driving member 202 can be adjusted again to increase the bending degree of the guide wire structure 500, the medical staff can quickly reset the guide wire structure 500 to the bending range outside the body according to the current position of the limiting member 301, which is very convenient. Moreover, due to the limitation of the maximum straightening range, the medical staff can operate with confidence without worrying about the failure of the guide wire structure 500.

[0051] In one embodiment, referring to Figures 4 to 6 The sliding member 201 includes a first driving column 2013 and a first sliding block 2014, the first sliding block 2014 is arranged on the first driving column 2013 and is in sliding cooperation with the base frame 100, the first connecting member 401 is arranged at the end of the first driving column 2013, and the base frame 100 is provided with a first sliding cavity 101 matched with the first sliding block 2014, and the first sliding block 2014 is located in the first sliding cavity 101.

[0052] In the embodiment, the first sliding block 2014 is arranged on the sliding member 201 to realize the sliding cooperation between the sliding member 201 and the base frame 100. Meanwhile, the first driving column 2013 ensures that the first sliding block 2014 has a small size, provides a structural basis for the cooperation between the sliding member 201 and the driving member 202, and provides a structural basis for the movement of the guide wire structure 500 driven by the sliding member 201. Meanwhile, the first sliding cavity 101 provides a stable sliding track for the first sliding block 2014 and limits the sliding distance of the first sliding block 2014, so as to avoid the excessive driving of the guide wire structure 500 and the possibility of operation risk and the failure of the guide wire structure 500 due to the failure of the cooperation between the sliding member 201 and the driving member 202.

[0053] In one embodiment, please refer to Figures 4 to 6 The driving member 202 is rotationally connected with the base frame 100 and is threadedly connected with the first driving column 2013. When the driving member 202 rotates, the first driving column 2013 drives the first sliding block 2014 to slide.

[0054] In this embodiment, the driving member 202 is rotationally connected with the base frame 100 and is threadedly connected with the sliding member 201. When the driving member 202 rotates, the sliding member 201 slides along the sliding track under the driving of the thread, and the thread provides a positioning effect for the sliding member 201, reducing the situation that the sliding member 201 slides due to operation errors during the operation process, and reducing the risk of operation misoperation.

[0055] In one embodiment, please refer to Figures 4 to 6 The limiting member 301 includes a second driving column 3012 and a second sliding block 3013. The second sliding block 3013 is slidably connected with the second driving column 3012 and the base frame 100. The base frame 100 is provided with a second sliding cavity 102 adapted to the second sliding block 3013, and the second sliding block 3013 is located in the second sliding cavity 102.

[0056] In this embodiment, the second sliding block 3013 is slidably connected with the base frame 100, so as to realize the sliding connection between the limiting member 301 and the base frame 100. The second driving column 3012 is provided to provide a structural basis for the cooperation between the limiting member 301 and the adjusting member 302. The second sliding cavity 102 adapted to the second sliding block 3013 is provided to provide a stable sliding track for the sliding of the second sliding block 3013, and at the same time, the sliding distance of the second sliding block 3013 is limited, preventing the limiting member 301 from being separated from the adjusting member 302 due to excessive operation of medical staff, resulting in adjustment failure.

[0057] In one embodiment, please refer to Figures 4 to 6 The adjusting member 302 is rotationally connected with the base frame 100 and is threadedly connected with the limiting member 301. When the limiting member 301 rotates, the second driving column 3012 drives the second sliding block 3013 to slide.

[0058] In this embodiment, the adjusting member 302 is rotationally connected with the base frame 100 and is threadedly connected with the limiting member 301. When the adjusting member 302 rotates, the thread drives the limiting member 301 to slide along the sliding track. At the same time, the thread connection provides a positioning effect for the limiting member 301. In the case that the medical staff does not rotate the adjusting member 302, the limiting member 301 will not slide randomly due to being pushed, thereby realizing stable limitation of the sliding range of the sliding member 201.

[0059] In one embodiment, please refer to Figure 2and Figure 3 The curved end of the bending section 5011 near the far end of the spindle 501 is the termination end 5013. A straight section is provided on the spindle 501 between the termination end 5013 and the far end of the spindle 501. The third connection point 505 is located between the termination end 5013 and the far end of the spindle 501.

[0060] In this embodiment, when the operator operates the spring 502, the spring 502 transmits the elastic force to the spindle 501 via the third connection point 505, thereby applying the elastic force between the third connection point 505 on the spindle 501 and the starting end 5012 of the bent section 5011, thereby forcing the bent section 5011 to tighten and straighten. Then, the stress transmission on the spindle 501 is blocked by the third connection point 505, preventing the hardness of the straight section from increasing, avoiding the hardness increase of the tip of the straight section far from the third connection point 505, thereby reducing the risk of puncturing blood vessels.

[0061] In one embodiment, see Figure 2 and Figure 3 The third connection point 505 is located at the end 5013 of the curved section 5011.

[0062] In this embodiment, since the third connection point 505 is located at the junction of the straight section and the curved section 5011, rather than on the curved section 5011, it prevents the tip hardness from increasing and avoids the situation where the curved section 5011 cannot be fully straightened due to the blockage of stress transmission, thus ensuring the adjustment range of the tip bending shape of the guide wire structure 500.

[0063] In one embodiment, see Figure 2 and Figure 3 The third connection point 505 is located on the curved section 5011.

[0064] In this embodiment, by setting the third connection point 505 on the bending section 5011, the maximum range of the operator's adjustment of the guide wire bend is limited, which also allows the angle of the guide wire structure 500 to be controlled during the straightening process, thus making it suitable for some environments that require a fixed guide wire bend angle.

[0065] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An adjustable bending guidewire device, comprising: include: The guide wire structure (500) has a proximal end near the operator and a distal end away from the operator, including a mandrel (501) and a spring (502). The spring (502) is sleeved on the outer periphery of the mandrel (501). The distal end of the mandrel (501) is provided with an arc-shaped curved section (5011). The proximal ends of the mandrel (501) and the spring (502) are connected to form a first connection point (503). The distal ends of the mandrel (501) and the spring (502) are connected to form a second connection point (504). The mandrel (501) and the spring (502) are connected near the distal end to form a third connection point (505). The end of the curved section (5011) near the proximal end is the starting end (5012). The third connection point (505) is located between the starting end (5012) of the curved section (5011) and the distal end of the mandrel (501). A base frame (100) through which the guide wire structure (500) passes, and the base frame (100) is connected to the spring (502); A drive structure (200) is disposed on the base frame (100) and includes a slider (201) and a drive member (202). The slider (201) is connected to the spring (502) and the guide wire structure (500), and is adapted to drive the guide wire structure (500) to move relative to the base frame (100). The drive member (202) is adapted to drive the slider (201) to slide. A limiting structure (300) is provided on the base frame (100), and the limiting structure (300) is used to limit the sliding member (201); The first connector (401) is disposed on the sliding member (201) and is used to limit the spring (502) of the guide wire structure (500); The second connector (402) is disposed on the base frame (100) and is used to limit the spring (502) of the guide wire structure (500).

2. The adjustable bend guidewire device of claim 1, wherein, The limiting structure (300) includes a limiting member (301) and an adjusting member (302). The limiting member (301) is slidably connected to the base frame (100). The sliding trajectories of the sliding member (201) and the limiting member (301) are on the same straight line. The sliding member (201) is provided with a limiting rod (2011) extending along the sliding direction of the sliding member (201). The limiting rod (2011) passes through the limiting member (301). The periphery of the limiting rod (2011) is provided with a limiting block (2012). The limiting member (301) is provided with an abutment (3011). The abutment (3011) is adapted to block the limiting block (2012) to limit the sliding range of the sliding member (201).

3. The adjustable bend guide wire device of claim 2, wherein, The sliding piece (201) comprises a first driving column (2013) and a first sliding block (2014), the first sliding block (2014) is arranged on the first driving column (2013) and is in sliding fit with the base frame (100), the first connecting piece (401) is arranged at the end of the first driving column (2013), and the base frame (100) is provided with a first sliding cavity (101) matched with the first sliding block (2014), and the first sliding block (2014) is located in the first sliding cavity (101).

4. The adjustable bend guidewire device of claim 3, wherein, The driving piece (202) is rotationally connected with the base frame (100) and is in threaded connection with the first driving column (2013), and under the rotation of the driving piece (202), the first driving column (2013) drives the first sliding block (2014) to slide.

5. The adjustable bend guidewire device of claim 2, wherein, The limiting piece (301) comprises a second driving column (3012) and a second sliding block (3013), the second sliding block (3013) is arranged on the second driving column (3012) and is in sliding fit with the base frame (100), the base frame (100) is provided with a second sliding cavity (102) matched with the second sliding block (3013), and the second sliding block (3013) is located in the second sliding cavity (102).

6. The adjustable bend guidewire device of claim 5, wherein, The adjusting piece (302) is rotationally connected with the base frame (100) and is in threaded connection with the limiting piece (301), and under the rotation of the limiting piece (301), the second driving column (3012) drives the second sliding block (3013) to slide.

7. The adjustable bend guidewire device of any of claims 1-6, wherein, One end of the arc-shaped bending section (5011) close to the distal end of the mandrel (501) is a terminal end (5013), a straight section is arranged on the mandrel (501) between the terminal end (5013) and the distal end of the mandrel (501), and the third connecting point (505) is located between the terminal end (5013) and the distal end of the mandrel (501).

8. The adjustable bend guidewire device of claim 7, wherein, The third connecting point (505) is arranged at the terminal end (5013) of the bending section (5011).

9. The adjustable bend guidewire device of claim 7, wherein, The third connecting point (505) is located on the bending section (5011).

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