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Intervention catheter being convenient to control bending

An interventional catheter and bending technology, applied in the direction of catheters, etc., can solve the problems of high dependence, complex structure and control, and high processing difficulty, and achieve the effects of low production and processing difficulty, simplified structure, and avoidance of secondary pollution.

Pending Publication Date: 2019-01-11
李发久
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technical solution is highly dependent on the material, and this material is currently immature. The specific performance is that the bending strain of this material is not linear with the input value, which makes the structure and control more complicated and the processing difficulty is very high.

Method used

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  • Intervention catheter being convenient to control bending
  • Intervention catheter being convenient to control bending
  • Intervention catheter being convenient to control bending

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as Figure 1~3 In an interventional catheter that is easy to control bending, at the end of the catheter 1, the tip 11 and the tube body 12 are connected in a bendable manner. The tip 11 is provided with a tip through hole 105, and the tube 12 is provided with There is a first through hole 104 of the pipe body, and the end through hole 105 is in communication with the first through hole 104 of the pipe body;

[0034] The position of the end head 11 near the edge is fixedly connected to one end of the pull wire 106, and the pull wire 106 passes through the second through hole 107 of the pipe body 12 arranged along the axis. With this structure, through the cable structure, the control tip 11 is bent at a larger angle, so that it is convenient to pass through the blood vessel position with a larger bending angle. The catheter 1 is also provided with a control handle 2, and the end of the catheter 1 is also provided with a control device 3, which is used for operations s...

Embodiment 2

[0036] An interventional catheter that is easy to control bending. At the end of the catheter 1, the tip 11 and the tube body 12 are connected in a bendable manner. The tip 11 is provided with a tip through hole 105, and the tube 12 is provided with a tube. Body first through hole 104, the end through hole 105 is in communication with the first through hole 104 of the pipe body;

[0037] The tip 11 near the edge is connected to the temperature control action element 111, the temperature control action element 111 is connected to the pipe body 12, and the temperature control action element 111 is also electrically connected to the wire 113, which is arranged along the axis through the pipe body 12 The second through hole 107 of the tube body. In this example, the bending of the tip 11 is controlled by the action of the temperature control action element 111. Since the control distance is short, it is less affected by the deformation of other parts of the material, and the temperat...

Embodiment 3

[0039] On the basis of embodiment 1 or 2, the preferred solution is figure 2 Wherein, the end head 11 is composed of a spherical end 101, a recessed portion 102 and a ball bearing 103, and the end head 11 is connected to the recess at the end of the pipe body 12 through the ball bearing 103. The structure in this example is suitable for catheters with diameters, for example, catheters with a diameter greater than 1.4 mm. The ball bearing 103 is used to control the bending smoothly. In this example, the socket and the ball bearing 103 are installed by heating the end of the tube body 12. The through holes 105 of the spherical tip 101 are rounded to reduce the interference of related cables, such as ultrasound catheters, ablation fibers, and ablation electrodes.

[0040] The preferred solution is figure 2 Among them, the diameter of the spherical end 101 is larger than the diameter of the ball bearing 103, and the diameter of the ball bearing 103 is larger than the diameter of th...

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Abstract

The invention provides an intervention catheter being convenient to control bending, being characterized in that at the end of the catheter, the end part and the tube body are flexibly connected in abending way; an end through hole is formed in the end part; the tube body is provided with a tube body first through hole, and the end part through hole is communicated with the tube body first through hole; the end part is fixedly connected with one end of the cable at a position close to the edge, and the cable passes through a second through hole of the tube body arranged along the axis in thetube body; or the position of the end head close to the edge is connected with the temperature control actuating element, and the temperature control actuating element is connected with the pipe body,and the temperature control actuating element is also electrically connected with a conductor, and the conductor passes through the second through hole of the pipe body arranged along the axis in thepipe body. By adopting the above scheme, a large bending angle can be realized at the end position, thereby facilitating the active guiding of the intervention catheter through the blood vessel or other pipelines with large bending. Compared with the prior art, the scheme of the invention simplifies the structure in the prior art, and has lower production and processing difficulty under the premise of realizing the same technical effect.

Description

Technical field [0001] The invention relates to the field of interventional catheters, in particular to an interventional catheter that is convenient to control bending. Background technique [0002] Interventional catheters can perform operations such as plugging, flushing, extraction, cutting, ablation, and positioning in the human body, and are effective medical means to achieve minimally invasive treatment. The pipelines in the human body, such as blood vessels, usually have many curved parts. To allow interventional catheters to enter these curved parts, a variety of guide wires with different curved ends are designed, and the guide wires are used to guide the interventional catheter into the blood vessel. However, this method requires repeated insertion and rotation of the guide wire and catheter, which will cause great harm to the patient. [0003] Chinese patent document CN105658268A describes an interventional system that controls the bending of the catheter through a ben...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/14A61M25/01
CPCA61M25/0023A61M25/0068A61M25/007A61M25/0113A61M25/0136
Inventor 李发久朱紫阳李承红
Owner 李发久
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