Twist controller for preventing guide wire from being damaged
By introducing a fixed rod, an outer handle and a torque control device into the torque controller, the combination of knob, threaded rod core and elastic components is solved, and the problem of difficult control of the existing torque controller when fixing the guidewire is achieved. The stable fixation of the guide wire avoids damage.
Patent Information
- Application Number
- CN202411222089.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2024-12-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing twist controllers are difficult to control when fixing the guide wire, and are prone to over-clip or not clamping, resulting in damage to the guide wire.
A torsion controller including a fixing rod, an outer handle, and a torque control device is designed. Through the combination of knob, threaded rod core and elastic elements, the rotation of the cover plate is restricted, ensuring that the guidewire is fixed under appropriate force and avoiding excessive size. Torsion damages the guidewire.
It effectively avoids damage caused by excessive torque during the fixing process of the guide wire, improves the accuracy and safety of operation, and ensures that the guide wire will not be over-clipped or slide and disengage during fixing.
Smart Images
Figure CN119113346A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field related to medical devices, and in particular to a torque controller capable of preventing guidewire damage. Background Art
[0002] There are many types of surgical instruments used in interventional surgery, and whether the instruments can be perfectly matched determines the success of the operation. Interventional guidewires have good elasticity and toughness, and have PTFE coating and hydrophilic lubricating coating on the surface. They are widely used because of their small surface friction coefficient, small movement resistance in catheters and blood vessels, and flexible movement. In interventional surgery, we often need to selectively insert the guidewire into the designated target blood vessel for operation. Because the guidewire is thin and has a smooth surface, it is difficult to finely rotate and control the guidewire while wearing sterile gloves. Especially when selecting the target blood vessel, it is necessary to accurately control the direction of the guidewire while pushing the guidewire, and the operation requires high technical skills.
[0003] Using the twist controller to operate the guide wire can make rotation and pushing flexible and accurate, reduce damage to the blood vessel wall, improve the success rate of entering the target blood vessel, reduce the difficulty of surgical operation, make the instrument placement accurate and quick, and reduce the exposure time of operators and patients to radiation.
[0004] The current torque controller is difficult to control the force when fixing the guide wire. If the knob is turned too hard, the guide wire may be over-clamped and damaged. If the knob is turned too soft, the guide wire may not be clamped tightly and there is a risk of the guide wire slipping. Summary of the invention
[0005] In view of the deficiencies of the prior art, the present invention provides the following technical solutions:
[0006] A torque controller for preventing guide wire damage comprises a fixed rod, a cover plate is rotatably installed at the front end of the fixed rod, and an outer handle is movably sleeved on the fixed rod, and the cover plate and the fixed rod are sleeved by sliding the outer handle, thereby limiting the rotation of the cover plate, and a torque control device is arranged in the outer handle, and the torque control device comprises a knob, a threaded rod core and an elastic element, the threaded rod core is fixedly installed in the outer handle, the rear end of the fixed rod is threadedly connected with the threaded rod core, and the rear end of the threaded rod core is fixedly provided with a front end face ratchet, the knob is rotatably installed at the rear end of the outer handle, the front end of the knob is located in the outer handle, and the rear end face ratchet is slidably arranged at the front end of the knob, and the rear end face ratchet is connected to the rear end of the outer handle through an elastic element, and the rear end face ratchet is driven by the elastic element to slide forward and mesh with the front end face ratchet, and the threaded rod core is driven to rotate through the transmission of the front end face ratchet and the rear end face ratchet by rotating the knob, thereby driving the outer handle to move forward;
[0007] A fixing block is arranged inside the front end of the fixing rod, and the fixing block slides up and down along the radial direction of the fixing rod, and a push rod is arranged inside the fixing rod along the axial direction thereof for sliding. The push rod is pushed forward by the forward movement of the threaded rod core, and the fixing block is pushed upward to slide out of the fixing rod.
[0008] Furthermore, mounting holes are provided on the threaded rod core, the knob, the front end ratchet and the rear end ratchet. An insertion rod is fixedly arranged in the fixed rod and movably inserted into the mounting hole of the threaded rod core. A mounting hole is also provided in the insertion rod, and the inner diameter of the mounting hole of the insertion rod is slightly larger than the inner diameter of the guide wire.
[0009] Furthermore, a locking block is slidably arranged inside the outer handle, and a sliding groove is opened along the outer wall of the outer handle. A sliding block is slidably arranged in the sliding groove. The locking block is pushed to slide toward the axial direction of the outer handle by the sliding slider and contact the outer wall of the fixed rod, thereby limiting the rotation between the outer handle and the fixed rod.
[0010] Furthermore, the front end of the slider and the upper end of the locking block are both inclined structures, and the inclined surface of the front end of the slider is opposite to the inclined surface of the upper end of the locking block.
[0011] Furthermore, the lower end of the fixing block and the front end of the push rod are both inclined structures, and the direction of the inclined surface of the lower end of the fixing block is opposite to the direction of the front end of the push rod.
[0012] Furthermore, arc-shaped grooves are provided on the upper front end of the fixing rod and the lower surface of the cover plate.
[0013] Furthermore, a cavity is opened at the rear end of the fixing rod, a through hole is opened in the outer handle, an internal thread is arranged on the inner wall of the cavity, the front end of the threaded rod core is inserted into the cavity and cooperates with the internal thread, the outer periphery of the ratchet on the front end face of the rear end of the threaded rod core is fixedly connected with the inner wall of the through hole, and the knob is rotatably installed in the through hole.
[0014] Furthermore, when the knob is rotated clockwise, the rear end face ratchet squeezes the front end face ratchet under the action of the elastic element, so that the rear end face ratchet squeezes the front end face ratchet to produce friction under the action of the elastic element, thereby driving the threaded rod core to move forward to support the push rod, and pushing the fixed block to slide up. When the fixed block is resisted, the movement of the threaded rod core is resisted, and when the resistance is greater than the elastic force of the elastic element pushing the rear end face ratchet, the knob is turned, and the rear end face ratchet slides backward under the action of the front end face ratchet to squeeze the elastic element, thereby being unable to continue to drive the threaded rod core to rotate and move forward to drive the push rod to push the fixed block.
[0015] Furthermore, the elastic element pushes the rear end ratchet to act on the front end ratchet with a force greater than 5N.
[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0017] The present invention rotatably installs a cover plate at the front end of a fixed rod. When in use, a guide wire is placed between the fixed rod and the cover plate, inserted into the fixed rod, and passed through the insertion rod, the threaded rod core, the front end face ratchet, the rear end face ratchet and the installation hole on the knob, so that the guide wire passes through the entire torque controller, and an outer handle is movably sleeved on the fixed rod, a torque control device is arranged in the outer handle, a front end face ratchet is fixedly arranged at the rear end of the threaded rod core of the torque control device and is fixedly connected to the outer handle, and a rear end face ratchet is slidably arranged at the front end of the knob of the torque control device, and the rear end face ratchet slides forward under the action of an elastic element and meshes with the front end face ratchet, and the knob is rotated to drive the front end face ratchet and the rear end face ratchet. The threaded rod core rotates and moves forward, driving the outer handle to move forward and cover the fixed rod and the cover plate, limiting the rotation of the cover plate. The knob is continued to be turned to drive the threaded rod core to move forward, pushing the push rod forward, pushing the fixed block upward out of the fixed rod to contact the guide wire, thereby fixing the guide wire. The fixed block is resisted by the guide wire, and the movement of the threaded rod core is resisted. When the resistance is greater than the elastic force of the elastic element pushing the rear end face ratchet, the knob is turned, and the rear end face ratchet is acted upon by the front end face ratchet to slide backward and squeeze the elastic element, thereby failing to drive the threaded rod core to rotate and move forward, driving the push rod to push the fixed block to squeeze the guide wire, thereby avoiding damage to the guide wire caused by the fixed block due to excessive torque. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the closed structure of the cover plate of the present invention;
[0019] Figure 2 This is a schematic diagram of the cover plate opening structure of the present invention;
[0020] Figure 3 It is a schematic side cross-sectional view of a closed cover plate of the present invention;
[0021] Figure 4 This is a schematic side cross-sectional view of an open cover plate of the present invention;
[0022] Figure 5 It is a schematic diagram of the end face ratchet structure of the present invention;
[0023] Figure 6 It is a schematic diagram of the fixed guide wire structure of the present invention.
[0024] In the figure: fixing rod 1, cavity 11, insertion rod 12, cover plate 2, outer handle 3, sliding groove 31, through hole 32, slider 4, knob 5, rear end face ratchet 51, ratchet anti-rotation mechanism 52, threaded rod core 6, front end face ratchet 61, push rod 7, fixing block 8, locking block 9. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0026] Example:
[0027] See also Figure 1-6 A torque controller for preventing guide wire damage comprises a fixed rod 1, a cover plate 2 is rotatably installed at the front end of the fixed rod 1, and an outer handle 3 is movably sleeved on the fixed rod 1, and the cover plate 2 and the fixed rod 1 are sleeved by sliding of the outer handle 3, so as to limit the rotation of the cover plate 2, a torque control device is arranged in the outer handle 3, and the torque control device comprises a knob 5, a threaded rod core 6 and an elastic element, the threaded rod core 6 is fixedly installed in the outer handle 3, the rear end of the fixed rod 1 is threadedly connected with the threaded rod core 6, the rear end of the threaded rod core 6 is fixedly provided with a front end face ratchet 61, the knob 5 is rotatably installed at the rear end of the outer handle 3, the front end of the knob 5 is located in the outer handle 3, and the front end of the knob 5 is slidably provided with a rear end face ratchet 51, and the rear end face ratchet 51 is The rear ends of the outer handle 3 are connected by an elastic element, and the rear end face ratchet 51 is driven by the elastic element to slide forward and mesh with the front end face ratchet 61. The threaded rod core 6 is driven to rotate through the transmission of the front end face ratchet 61 and the rear end face ratchet 51 by turning the knob 5, thereby driving the outer handle 3 to move forward. A fixed block 8 is arranged inside the front end of the fixed rod 1, and the fixed block 8 slides up and down along the radial direction of the fixed rod 1, and a push rod 7 is arranged inside the fixed rod 1 along its axial sliding direction. The lower end of the fixed block 8 and the front end of the push rod 7 are both inclined structures, and the inclined surface of the lower end of the fixed block 8 is opposite to the direction of the front end of the push rod 7. The push rod 7 is pushed forward by the forward movement of the threaded rod core 6, and the fixed block 8 is pushed to slide upward and pass through the fixed rod 1.
[0028] In this embodiment, a locking block 9 is slidably arranged inside the outer handle 3, and a sliding groove 31 is provided along the outer wall of the outer handle 3. A slider 4 is slidably arranged in the sliding groove 31. The front end of the slider 4 and the upper end of the locking block 9 are both inclined structures. The inclined surface of the front end of the slider 4 is opposite to the inclined surface of the upper end of the locking block 9. The locking block 9 is pushed to slide in the axial direction of the outer handle 3 by sliding the slider 4, and contacts the outer wall of the fixed rod 1, thereby limiting the rotation between the outer handle 3 and the fixed rod 1, and preventing the outer handle 3 and the fixed rod 1 from rotating relative to each other during the operation of the guide wire, thereby affecting the fixation of the guide wire by the fixed block 8;
[0029] In this embodiment, arc-shaped grooves are provided on the front end of the fixing rod 1 and the bottom of the cover plate 2 to place the guide wire, and mounting holes are provided on the threaded rod core 6, the knob 5, the front end face ratchet 61, and the rear end face ratchet 51. The fixing rod 1 is fixedly provided with an insertion rod 12, which is movably inserted into the mounting hole of the threaded rod core 6. A mounting hole is also provided in the insertion rod 12, and the inner diameter of the mounting hole of the insertion rod 12 is slightly larger than the diameter of the guide wire. The mounting holes on the knob 5, the front end face ratchet 61, and the rear end face ratchet 51 are larger than the diameter of the guide wire, so as to ensure that the guide wire can smoothly pass through the threaded rod core 6, the knob 5, the front end face ratchet 61, the rear end face ratchet 51 and the insertion rod, and at the same time do not interfere with the rotation of the threaded rod core 6, the knob 5, the front end face ratchet 61, and the rear end face ratchet 51;
[0030] The rear end of the fixing rod 1 is provided with a cavity 11, the outer handle 3 is provided with a through hole 32, the inner wall of the cavity 11 is provided with an internal thread, the front end of the threaded rod core 6 is inserted into the cavity 11 and matched with the internal thread, the front end face of the rear end of the threaded rod core 6 is fixedly connected to the outer periphery of the ratchet 61 and the inner wall of the through hole 32, and the knob 5 is rotatably installed in the through hole 32;
[0031] In this embodiment, when the knob 5 is rotated clockwise, the rear end face ratchet 51 squeezes the front end face ratchet 61 under the action of the elastic element, so that the rear end face ratchet 51 squeezes the front end face ratchet 61 under the action of the elastic element to generate friction, thereby driving the threaded rod core 6 to move forward to support the push rod 7, and push the fixed block 8 to slide up. When the fixed block 8 is resisted, the movement of the threaded rod core 6 is resisted. When the resistance is greater than the elastic force of the elastic element pushing the rear end face ratchet 51, the knob 5 is rotated, and the rear end face ratchet 51 slides backward under the action of the front end face ratchet 61 to squeeze the elastic element, thereby failing to continue to drive the threaded rod core 6 to rotate and move forward to drive the push rod 7 to push the fixed block 8.
[0032] In this embodiment, the cover plate 2 is rotatably installed at the front end of the fixed rod 1. When in use, the guide wire is placed between the fixed rod 1 and the cover plate 2, inserted into the fixed rod 1, and passed through the insertion rod 12, the threaded rod core 6, the front end face ratchet 61, the rear end face ratchet 51 and the mounting hole on the knob 5, so that the guide wire passes through the entire torque controller, and the outer handle 3 is movably sleeved on the fixed rod 1, and a torque control device is arranged in the outer handle 3. The front end face ratchet 61 is fixedly arranged at the rear end of the threaded rod core 6 of the torque control device and is fixedly connected to the outer handle 3, and the rear end face ratchet 51 is slidably arranged at the front end of the knob 5 of the torque control device. The rear end face ratchet 51 slides forward under the action of the elastic element and meshes with the front end face ratchet 61. By rotating the knob 5, the front end face ratchet 61 and the rear end face ratchet 5 are meshed. The transmission of 1 drives the threaded rod core 6 to rotate and move forward, thereby driving the outer handle 3 to move forward to cover the fixed rod 1 and the cover plate 2, limiting the rotation of the cover plate 2, and continuing to turn the knob 5 to drive the threaded rod core 6 to move forward and push the push rod 7 to move forward, pushing the fixed block 8 upward out of the fixed rod 1 to contact the guide wire, thereby fixing the guide wire, the fixed block 8 is resisted by the guide wire, and the movement of the threaded rod core 6 is resisted. When the resistance is greater than the elastic force of the elastic element pushing the rear end face ratchet, the knob 5 is turned, and the rear end face ratchet 51 slides backward and squeezes the elastic element under the action of the front end face ratchet 61, thereby failing to continue to drive the threaded rod core 6 to rotate and move forward, driving the push rod 7 to push the fixed block 8 to squeeze the guide wire, thereby avoiding excessive torque and damage to the guide wire by the fixed block 8.
[0033] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A torque controller for preventing guidewire damage, comprising a fixing rod, characterized in that: The front end of the fixing rod is rotatably installed with a cover plate, and an outer handle is movably sleeved on the fixing rod, and the cover plate and the fixing rod are slidably sleeved by the outer handle, so as to limit the rotation of the cover plate, and a torque control device is arranged in the outer handle, and the torque control device comprises a knob, a threaded rod core and an elastic element, and the threaded rod core is fixedly installed in the outer handle, and the rear end of the fixing rod is threadedly connected with the threaded rod core, and the rear end of the threaded rod core is fixedly provided with a front end face ratchet, and the knob is rotatably installed at the rear end of the outer handle, and the front end of the knob is located in the outer handle, and the rear end face ratchet is slidably provided at the front end of the knob, and the rear end face ratchet is connected with the rear end of the outer handle through an elastic element, and the rear end face ratchet is driven by the elastic element to slide forward and mesh with the front end face ratchet, and the threaded rod core is driven to rotate through the transmission of the front end face ratchet and the rear end face ratchet by rotating the knob, thereby driving the outer handle to move forward; A fixing block is arranged inside the front end of the fixing rod, and the fixing block slides up and down along the radial direction of the fixing rod, and a push rod is arranged inside the fixing rod along the axial direction thereof for sliding. The push rod is pushed forward by the forward movement of the threaded rod core, and the fixing block is pushed upward to slide out of the fixing rod.
2. A torque controller for preventing guidewire damage according to claim 1, characterized in that: The threaded rod core, the knob, the front end ratchet and the rear end ratchet are all provided with mounting holes. An insertion rod is fixedly arranged in the fixing rod and the insertion rod is movably inserted into the mounting hole of the threaded rod core. The insertion rod is also provided with a mounting hole.
3. A torque controller for preventing guidewire damage according to claim 1, characterized in that: A locking block is slidably arranged inside the outer handle, and a sliding groove is opened along the outer wall of the outer handle. A sliding block is slidably arranged in the sliding groove. The locking block is pushed to slide toward the axial direction of the outer handle by the sliding slider and contacts the outer wall of the fixed rod, thereby limiting the rotation between the outer handle and the fixed rod.
4. A torque controller for preventing guidewire damage according to claim 3, characterized in that: The front end of the slider and the upper end of the locking block are both inclined structures, and the inclined surface of the front end of the slider is opposite to the inclined surface of the upper end of the locking block.
5. The torque controller for preventing guidewire damage according to claim 1, characterized in that: The lower end of the fixed block and the front end of the push rod are both inclined structures, and the direction of the inclined surface of the lower end of the fixed block is opposite to the direction of the front end of the push rod.
6. A torque controller for preventing guidewire damage according to claim 1, characterized in that: The upper front end of the fixing rod and the lower side of the cover plate are both provided with arc-shaped grooves.
7. A torque controller for preventing guidewire damage according to claim 1, characterized in that: A cavity is formed at the rear end of the fixing rod, a through hole is formed in the outer handle, an internal thread is arranged on the inner wall of the cavity, the front end of the threaded rod core is inserted into the cavity and cooperates with the internal thread, the outer periphery of the ratchet wheel on the front end face of the rear end of the threaded rod core is fixedly connected with the inner wall of the through hole, and the knob is rotatably installed in the through hole.
8. The torque controller for preventing guidewire damage according to claim 1, characterized in that: When the knob is rotated clockwise, the rear end face ratchet squeezes the front end face ratchet under the action of the elastic element, so that the rear end face ratchet squeezes the front end face ratchet to produce friction under the action of the elastic element, thereby driving the threaded rod core to move forward to support the push rod, and pushing the fixed block to slide up. When the fixed block is resisted, the movement of the threaded rod core is resisted. When the resistance is greater than the elastic force of the elastic element pushing the rear end face ratchet, the knob is turned, and the rear end face ratchet slides backward under the action of the front end face ratchet to squeeze the elastic element, thereby being unable to continue to drive the threaded rod core to rotate and move forward to drive the push rod to push the fixed block.
9. A torque controller for preventing guidewire damage according to claim 1, characterized in that: The elastic element pushes the rear end ratchet to act on the front end ratchet with a force greater than 5N.