Bending-adjusting guide wire handle

Abstract

The invention belongs to the field of medical instruments, and particularly relates to a bending adjusting guide wire handle. The invention provides a bending-adjusting guide wire handle. The bending-adjusting guide wire handle comprises a front chuck for clamping the near end of an outer guide wire; the rear chuck is used for clamping the near end of the core wire; the pushing piece is used for pushing the rear chuck to move back and forth; an elastic member; the driving piece acts on the elastic piece to drive the pushing piece to move back and forth; and the locking mechanism is used for limiting the front-back movement of the pushing piece in a natural state of the elastic piece. According to the bending-adjusting guide wire handle, a bending-adjusting guide wire can be operated with one hand, and the specific locking mechanism can effectively prevent operation errors caused by mistakenly touching the rear chuck. And by adopting a rack dislocation moving structure, the operation hand feeling and sensitivity can be improved, and the operation precision can be accurately mastered.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and particularly relates to a guide wire bending adjustment handle. Background Art

[0002] A bendable guidewire is a medical device commonly used in interventional procedures, primarily used to guide catheters or other instruments to their target locations. The bend handle, the core control component of the bendable sheath, allows precise control of the bend angle and direction of the guidewire tip, playing a crucial role in interventional procedures.

[0003] At present, there are many inconveniences in the commonly used operation methods of bending guidewires. For example, the traditional operation requires the operator to pinch the outer guidewire at the proximal end with one hand, and pull or push the core wire inside the outer guidewire with the other hand, so that the bending section of the bending guidewire bends left and right to achieve the bending purpose. Although there are some handle structures on the market that can fix the outer guidewire at the proximal end of the bending guidewire, it is still necessary to manually pull or push the core wire. The operation process is complicated, and it is difficult to accurately control the degree and direction of the bending of the bending guidewire. Long-term operation can easily lead to operator hand fatigue, affecting the accuracy and efficiency of the operation. There is a large room for improvement in actual clinical applications. At the same time, in some operations that require precise positioning and have strict requirements on the distal morphology of the bending guidewire, such as cardiac atrial septal puncture, renal artery ablation, heart valve repair, tumor interventional embolization, etc., the existing bending guidewire handles cannot meet the surgical needs well, and there is a risk of prolonged operation time and additional harm to patients. Summary of the Invention

[0004] The present invention provides a guidewire bending adjustment handle that can effectively solve the problems in the background technology.

[0005] The present invention provides a guide wire bending handle, comprising

[0006] The front clamp clamps the proximal end of the outer guide wire;

[0007] a rear clamp that clamps the proximal end of the core wire;

[0008] A pusher that pushes the rear chuck to move back and forth;

[0009] elastic parts;

[0010] a driving member acting on the elastic member to drive the pushing member to move back and forth; and

[0011] A locking mechanism that limits the forward and backward movement of the pusher when the elastic member is in its natural state.

[0012] As a further optimization of the present invention, it also includes

[0013] A housing for holding, a front clamping head is provided at the front end of the housing, a rear clamping head is provided at the rear end of the housing, a pushing member, an elastic member, a driving member and a locking mechanism are provided in the housing; a sliding groove is also provided on the surface of the housing; and

[0014] A push-pull key is arranged outside the housing, can move back and forth along the slide slot, and has a portion passing through the slide slot to connect with the driving member.

[0015] As a further optimization of the present invention, the pushing member is a frame structure; the driving member is arranged inside the pushing member; and the elastic member is arranged between the front end of the driving member and the front end of the pushing member or between the rear end of the driving member and the rear end of the pushing member.

[0016] As a further optimization of the present invention, the locking mechanism includes

[0017] Driving protrusions are provided on the left and right outer side walls of the driving member;

[0018] Pushing protrusions are provided on the left and right inner side walls of the pushing member. When the elastic member is in a natural state, the driving protrusions are in conflict with the pushing protrusions.

[0019] Pushing teeth are provided on the left and right outer side walls of the pushing member corresponding to the pushing protrusion, and housing teeth corresponding to the pushing teeth are provided in the housing;

[0020] Set the left and right side walls of the pusher to plastic material.

[0021] As a further optimization of the present invention, the elastic member is a compression spring; elastic members are provided between the front end of the driving member and the front end of the pushing member, and between the rear end of the driving member and the rear end of the pushing member.

[0022] As a further optimization of the present invention, a guide rod penetrating the pushing member, the driving member and the elastic member is also included.

[0023] As a further optimization of the present invention, the guide rod adopts a sleeve, and both ends of the sleeve are connected to the front clamping head and the rear clamping head respectively.

[0024] As a further optimization of the present invention, it also includes a shift rod that penetrates the push member from the side and extends out of the push member at both ends; a blocking portion that limits the movement stroke of the push member is provided inside the shell corresponding to the shift rod.

[0025] As a further optimization of the present invention, two raised slide rails are provided in the shell; the driving member is provided with a sliding protrusion sliding between the two slide rails; and the pushing member is provided with a groove covering the two slide rails.

[0026] As a further optimization of the present invention, a scale marking the position of the push-pull key is provided near the slide groove.

[0027] The present invention provides a guidewire bending handle that allows single-handed operation of the guidewire. Its unique locking mechanism effectively prevents operational errors caused by accidental contact with the rear chuck. The staggered rack structure improves operational feel and sensitivity, ensuring precise control of operating accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the external structure of this embodiment;

[0029] Figure 2 Schematic diagram of the cross-section structure of this embodiment;

[0030] Figure 3 Schematic diagram of the half shell structure of this embodiment;

[0031] Figure 4 Schematic diagram of the structure of the pusher in this embodiment;

[0032] Figure 5 Schematic diagram of the driving member structure of this embodiment;

[0033] Among them, the front chuck 1, the rear chuck 2, the pushing member 3, the pushing protrusion 3a, the pushing tooth pattern 3b, the groove 3c, the card slot 3d, the elastic member 4, the driving member 5, the driving protrusion 5a, the sliding protrusion 5b, the shell 6, the shell tooth pattern 6a, the slide rail 6b, the slide groove 6c, the blocking part 6d, the scale 6e, the push-pull key 7, the pipe sleeve 8, and the stop rod 9. DETAILED DESCRIPTION

[0034] The bending guide wire usually includes an outer guide wire and a core wire. The core wire is arranged inside the outer guide wire. By adjusting the axial distance between the proximal outer guide wire and the core wire, the bending direction of the distal end can be adjusted.

[0035] like Figure 1-5 As shown, this embodiment is provided with a front clamp 1, a rear clamp 2, a pusher 3, an elastic member 4, a drive member 5 and a locking mechanism to adjust the axial relative distance between the proximal outer guide wire and the core wire.

[0036] The front clamp 1 clamps the proximal end of the outer guide wire, and the rear clamp 2 clamps the proximal end of the core wire.

[0037] The pushing member 3 is arranged between the front chuck 1 and the rear chuck 2 and is connected to the rear chuck 2. The pushing member 3 can push the rear chuck 2 to move forward and backward relative to the front chuck 1. By operating the pushing member 3 to move forward and backward, the bending direction of the distal end of the curved guide wire can be adjusted.

[0038] Specifically, the pusher 3 of this embodiment is a strip-shaped frame structure. The front end of the rear chuck 2 is locked to the rear end of the pusher 3. Specifically, a locking groove 3d is provided on the rear wall of the pusher 3, and a locking block corresponding to the locking groove 3d is provided at the front end of the rear chuck 2. The locking block is locked in the locking groove 3d, thereby limiting the forward and backward movement of the rear chuck 2 relative to the pusher 3.

[0039] This embodiment does not directly drive the pushing member 3 to move forward and backward, but utilizes the elastic member 4 and the driving member 5 to drive the pushing member 3 to move forward and backward.

[0040] Specifically, the driving member 5 is also configured in a strip shape and can be accommodated within the frame of the pushing member 3, allowing the driving member 5 to move back and forth within the frame. Two elastic members 4 are also disposed within the frame of the pushing member 3. The two ends of the elastic members 4 connect the front end of the driving member 5 to the front end of the pushing member 3 and the rear end of the driving member 5 to the rear end of the pushing member 3, respectively. In this embodiment, the elastic member 4 is a compression spring; in other embodiments, the elastic member 4 can also be an airbag, a cushioning device, or the like.

[0041] When the elastic member 4 in this embodiment is a compression spring, the compression spring does not directly abut the rear end of the pusher 3, but rather abuts the front end of the rear clamp 2. Because the front end of the rear clamp 2 is connected to the rear end of the pusher 3, the compression spring abutting the front end of the rear clamp 2 is equivalent to abutting the rear end of the pusher 3. The advantage of this structure is that it can fully utilize the slot 3d. The compression spring can pass through the slot 3d during installation, making installation of the compression spring more convenient.

[0042] During use, the driving member 5 receives a pushing force that acts on the elastic member 4. After absorbing a certain amount of force, the elastic member 4 pushes the pushing member 3 forward and backward. The deformation of the elastic member 4 inevitably causes relative displacement between the driving member 5 and the pushing member 3. As a result, the driving member 5 and the pushing member 3 have two positions before and after the relative displacement: an initial position and a post-displacement position.

[0043] When the driving member 5 is subjected to a pushing force, the driving member 5 and the pushing member 3 change from the initial state to the displacement position state; when the pushing force applied to the driving member 5 disappears, under the action of the rebound force of the elastic member 4, the driving member 5 and the pushing member 3 return to the initial position state from the displacement state.

[0044] This embodiment adds a locking mechanism based on the above principle.

[0045] The locking mechanism can limit the forward and backward movement of the push member 3 when the elastic member 4 is in the natural state.

[0046] When the elastic member 4 is in the natural state, the driving member 5 and the pushing member 3 are in the initial state. At this time, the locking mechanism locks the pushing member 3, so that the pushing member 3 cannot move forward or backward; when the driving member 5 and the pushing member 3 change to the displacement position state, the pushing member 3 can be pushed forward or backward.

[0047] In this way, the driving member 5 can only push the pushing member 3 to move forward and backward when it is subjected to a force of a certain magnitude. When the driving member 5 is not subjected to a force, the rear chuck 2 cannot be pushed.

[0048] This embodiment includes a housing 6, which is strip-shaped and designed for gripping. The housing 6 is composed of two joined halves. A cavity is defined within the housing 6, and the pusher 3, elastic member 4, driver 5, and locking mechanism are located within the cavity. A front chuck 1 is located at the front end of the housing 6, and a rear chuck 2 is located at the rear end.

[0049] In other embodiments, a locking mechanism may be provided separately, for example, a gate structure is provided to limit the forward and backward movement of the pusher 3 , and the forward and backward movement of the driving member 5 can open the gate mechanism to allow the pusher 3 to pass through.

[0050] This embodiment does not provide a separate locking mechanism, but fully utilizes the existing structure to construct the locking mechanism.

[0051] In this embodiment, triangular driving protrusions 5a are provided on the left and right outer walls of the driving member 5, and pushing protrusions 3a are provided on the left and right inner walls of the pushing member 3. When the elastic member 4 is in the natural state, the driving protrusions 5a conflict with the pushing protrusions 3a.

[0052] Meanwhile, pusher 3 has push teeth 3b on its left and right outer walls corresponding to push protrusion 3a. Push teeth 3b can be configured with two to three teeth. Housing teeth 6a are provided within housing 6 corresponding to push teeth 3b. In this embodiment, housing teeth 6a are configured as racks parallel to the left and right sidewalls of pusher 3. Furthermore, the left and right sidewalls of pusher 3 are made of plastic.

[0053] Since the elastic member 4 is in its natural state, the driving protrusion abuts against the pushing protrusion 3a, which in turn abuts against the pushing teeth 3b. The pushing teeth 3b engage with the housing teeth 6a, preventing the pushing member 3 from being pushed. When the driving member 5 is displaced relative to the pushing member 3, the driving protrusion 5a and the pushing protrusion 3a become misaligned, and the pushing teeth 3b are no longer resisted by external forces. Furthermore, since the left and right sidewalls of the pushing member 3 are made of plastic, when the pushing member 3 is pushed, the left and right sidewalls contract and deform under the force of the housing teeth 6a, enabling the pushing member 3 to be pushed.

[0054] In this embodiment, when the pushing member 3 is pushed, the pushing teeth 3b and the shell teeth 6a rub against each other, making a "clicking" sound. Through this staggered resistance feel and sound, the user can get a very intuitive pushing feeling, and the user can clearly and accurately judge the forward and backward movement stroke of the rear chuck 2 through this feel and sound.

[0055] This embodiment further includes a long, strip-shaped slot 6c on the surface of the housing 6 and a push-pull button 7. The push-pull button 7 is located on the outside of the housing 6 and includes a column that passes through the slot 6c and connects to the driver 5. The push-pull button 7 can slide back and forth on the slot 6c. To operate the guide wire, the user holds the housing 6 and pushes the push-pull button 7 back and forth with their thumb to adjust the guide wire.

[0056] Furthermore, in this embodiment, a scale 6e for marking the position of the push-pull key 7 is provided near the slide groove 6c. The scale 6e can be used to know the distance of the push-pull key 7 relative to the origin on the slide groove 6c, and then the relative pulling distance of the outer guide wire and the core wire can be known. The bending angle of the distal end of the bending guide wire can be judged by the pulling distance. The scale 6e can be directly marked as the bending angle of the distal end of the bending guide wire, which is more intuitive.

[0057] Furthermore, this embodiment also provides a guide rod, which passes through the push member 3, the driving member 5 and the elastic member 4. The guide rod can limit the push-pull key 7, the driving member 5 and the elastic member 4 to move only along the length direction of the guide rod, that is, the front and back direction, and plays a good guiding role.

[0058] Furthermore, the guide rod adopts a hollow sleeve 8, the two ends of which are respectively connected to the front clamp 1 and the rear clamp 2, and the bending guide wire can pass through the sleeve 8, which facilitates the insertion of the bending guide wire.

[0059] In this embodiment, a stepped through hole is provided on the front chuck 1 and the rear chuck 2, wherein the large-diameter portion is used to insert the sleeve 8, and the small-diameter portion is used to adjust the bend guide wire. The sleeve 8 cannot be inserted into the small-diameter portion, so the stepped surface of the through hole forms a limit portion that limits the travel of the sleeve 8.

[0060] Furthermore, this embodiment also includes a stopper rod 9, which extends from the side of the pusher 3 and extends out of the pusher 3 at both ends. Within the housing 6, corresponding to the stopper rod 9, a stopper portion 6d is provided to limit the travel of the pusher 3. In this embodiment, the stopper portion 6d is located behind the stopper rod 9, thereby limiting the rearward travel of the rear chuck 2. In other embodiments, the stopper portion 6d may be provided both in front of and behind the stopper rod 9.

[0061] Furthermore, this embodiment features two raised rails 6b within each of the two housing halves 6. The driver 5 is equipped with a sliding protrusion 5b that slides between the two rails 6b. The protrusion 5b can slide between the two rails 6b. This embodiment also features grooves 3c on the front and rear walls of the pusher 3, enclosing the two rails 6b. This preferred solution reduces the contact area between the pusher 3 and the housing 6, lowering friction and improving smoothness of sliding. It also serves as a guide for sliding.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A guide wire bending handle, characterized in that: include The front clamp clamps the proximal end of the outer guide wire; A rear clamp that clamps the proximal end of the core wire; A pusher that pushes the rear chuck to move back and forth; elastic parts; a driving member acting on the elastic member to drive the pushing member to move back and forth; and A locking mechanism that limits the forward and backward movement of the pusher when the elastic member is in its natural state.

2. The guidewire bending handle according to claim 1, characterized in that: Also includes A housing for holding, a front clamping head is provided at the front end of the housing, a rear clamping head is provided at the rear end of the housing, a pushing member, an elastic member, a driving member and a locking mechanism are provided in the housing; a sliding groove is also provided on the surface of the housing; and A push-pull key is arranged outside the housing, can move back and forth along the slide slot, and has a portion passing through the slide slot to connect with the driving member.

3. The guidewire bending handle according to claim 1, characterized in that: The pushing member is a frame structure; the driving member is arranged in the pushing member; and the elastic member is arranged between the front end of the driving member and the front end of the pushing member or between the rear end of the driving member and the rear end of the pushing member.

4. The guidewire bending handle according to claim 3, characterized in that: Locking mechanism includes Driving protrusions are provided on the left and right outer side walls of the driving member; Pushing protrusions are provided on the left and right inner side walls of the pushing member. When the elastic member is in a natural state, the driving protrusions are in conflict with the pushing protrusions. Pushing teeth are provided on the left and right outer side walls of the pushing member corresponding to the pushing protrusion, and housing teeth corresponding to the pushing teeth are provided in the housing; Set the left and right side walls of the pusher to plastic material.

5. The guidewire bending handle according to claim 3, characterized in that: The elastic member adopts a compression spring; elastic members are arranged between the front end of the driving member and the front end of the pushing member, and between the rear end of the driving member and the rear end of the pushing member.

6. The guidewire bending handle according to claim 5, characterized in that: The utility model also comprises a guide rod which passes through the pushing member, the driving member and the elastic member.

7. The guidewire bending handle according to claim 6, characterized in that: The guide rod adopts a sleeve, and the two ends of the sleeve are respectively connected with the front clamping head and the rear clamping head.

8. The guidewire bending handle according to claim 2, characterized in that: It also includes a shift rod which penetrates the push member from the side and extends out of the push member at both ends; a blocking part which limits the movement stroke of the push member is provided inside the shell corresponding to the shift rod.

9. The guidewire bending handle according to claim 4, characterized in that: Two raised slide rails are arranged in the shell; the driving member is provided with a sliding protrusion sliding between the two slide rails; and the pushing member is provided with a groove covering the two slide rails.

10. The guidewire bending handle according to claim 1, characterized in that: There is a scale marking the position of the push-pull key near the slide.

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