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a guiding catheter

A catheter and catheter head technology, applied in the field of medical electrode catheters, can solve the problems of low catheter placement rate and small contact force, and achieve the effects of increasing the success rate, increasing placement rate and sticking force, and reducing time and risk.

Active Publication Date: 2021-03-19
上海鸿电医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such products are not based on the reality of renal artery ablation surgery, and cannot meet the relevant needs, resulting in a low catheter placement rate and small contact force

Method used

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Effect test

Embodiment 1

[0047] figure 1 It is a schematic diagram of the guiding catheter used in the embodiment of the present invention for ablation in the kidney; figure 2 It is a structural schematic diagram of the guide catheter according to the embodiment of the present invention;

[0048] See figure 1 , Renal artery ablation can be used to treat refractory hypertension. It mainly ablates the sympathetic nerve on the renal artery, blocks the sympathetic nerve, and lowers the blood pressure of hypertensive patients. figure 1 It is a schematic diagram of the guide catheter used for ablation in the kidney. Firstly, the femoral artery is punctured, and the guide wire is passed through. 2 The hemostatic valve 213 at the proximal end is inserted into the renal artery ablation catheter 1 and enters the renal artery 3 for ablation.

[0049] See figure 2 and image 3 , The guiding catheter provided in this embodiment is composed of a catheter tip 25 , a fixed curved section 24 , a deflectable sec...

Embodiment 2

[0059] Figure 6 It is a structural schematic diagram of a guide catheter according to another embodiment of the present invention; Figure 7 It is a schematic diagram of various curved shapes formed at the distal end of the guide catheter according to another embodiment of the present invention.

[0060] In the previous embodiments, the fixed curved section 24 is located between the catheter tip 25 and the deflectable section 23 , in this embodiment, the fixed curved section 24 is located between the deflectable section 23 and the catheter main body 22 . The length of the fixed curved section 24 is between 50-400mm, preferably 150mm, and the length of the deflectable section is between 50-200mm, more preferably 50-100mm. The structure of this embodiment is basically the same as image 3 Similarly, after the pipe is processed by Reflow technology, the fixed bending of the fixed bending die is performed. Figure 7 It is a schematic diagram of the curved shape of this embodim...

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Abstract

The invention discloses a guiding catheter, comprising: a catheter body, including a catheter head end, a catheter deflectable section, a fixed curved section and a catheter main body, and a catheter handle connected to the catheter body; wherein, the A pull wire is arranged in the catheter body, and a first knob and a second knob are arranged on the catheter handle, and the first knob is connected with the catheter body for controlling the movement of the catheter body along the catheter body. The central shaft rotates, and the second knob is connected to the pull wire for controlling the deflection of the deflectable section of the catheter. The guiding catheter provided by the present invention has both fixed bends and adjustable bends, and can realize various bends according to clinical needs. Therefore, the adjustable bend can be adjusted through the control handle, and the catheter body can also be freely rotated along the central axis. , can increase the in-place rate and adhering force of the catheter in renal artery ablation, increase the success rate of the operation, and reduce the time and risk of the operation.

Description

technical field [0001] The invention relates to a medical electrode catheter, in particular to a guiding catheter. Background technique [0002] Percutaneous renal artery ablation can be used to treat resistant hypertension. In this operation, a radiofrequency ablation catheter is introduced percutaneously to reach the renal artery for ablation, and the sympathetic nerve on the renal artery is ablated and destroyed, thereby reducing blood pressure. The method of radiofrequency ablation catheter alone has many disadvantages, such as long time for the catheter to be in place, low rate of ablation target site in place, small contact force with the tissue, complicated bending control, and difficulty in forming an effective ablation lesion. [0003] These problems can be well solved by introducing a guiding catheter, which can reduce the operation time and improve the safety and effectiveness of the operation. The guide catheters on the market are generally used for intracardia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12
CPCA61M25/0147A61M25/0136A61M25/0662
Inventor 王铮张清淳梁波孙杰孙毅勇谭家宏
Owner 上海鸿电医疗科技有限公司
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