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Radio frequency ablation device

A technology of radiofrequency ablation and inner tube, which is applied in the field of medical devices, can solve the problems of lack of hemostasis methods, achieve the effects of reducing scab tissue, good hemostasis, and reducing the risk of bleeding

Active Publication Date: 2021-06-15
达州市中心医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, after the ablation of the lesion is completed, when the radiofrequency ablation needle is pulled out, parenchymal organs such as the liver are often combined with bleeding, and there is still no effective way to stop bleeding. If the tumor is malignant, there is still a risk of planting and spreading along the needle tract

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment relates to a radio frequency ablation device, refer to figure 1 As shown, it includes a cannula unit 1 , a radio frequency ablation assembly 2 and a liquid supply assembly 3 . Wherein, the cannula unit 1 includes an inner tube 11 and an outer tube 12 that are nested and fixedly connected inside and outside. A through hole 102 is opened on the side wall of a section in the body, and the through hole 102 is used to form the communication between the cavity 101 and the outside world, and a section of the cannula unit 1 that is used to stay outside the patient's body is provided with a hole that communicates with the cavity 101. input port. The above-mentioned radio frequency ablation assembly 2 includes an electrode needle 22 for passing through the inner hole of the inner tube 11 . The liquid supply assembly 3 includes a liquid storage unit 31 and a heating unit 34. The heating unit 34 is used to heat the liquid in the liquid storage unit 31. A communica...

Embodiment 2

[0040] This embodiment relates to a radiofrequency ablation device, which has roughly the same structure as the radiofrequency ablation device described in Embodiment 1, the difference lies in: in this embodiment, refer to image 3 As shown, the above-mentioned through hole 102 is set through the side wall of the inner tube 11, and when the electrode needle 22 penetrates the inner tube 11, the outer periphery of the electrode needle 22 can block the through hole 102; An output port is provided on the opposite side of the cannula unit 1, and a switch that can open or close the output port is provided on the output port; when the switch is turned on, the liquid flowing into the cavity 101 can flow out through the output port. The output port and the switch are not shown in the drawings of this embodiment because it does not affect the understanding, and the liquid output from the output port can be directly discharged or circulated back into the liquid storage unit 31 .

[0041]...

Embodiment 3

[0045] This embodiment relates to a radiofrequency ablation device, which has roughly the same structure as the radiofrequency ablation device described in Embodiment 2, the difference is that in this embodiment, the inner hole of the inner tube 11 includes The large-diameter section, the transition section, and the small-diameter section are arranged, and the aforementioned through hole 102 is specifically set through the side wall of the small-diameter section.

[0046] In order to make the electrode needle 22 have a good sealing effect on the through hole 102 , the gap between the electrode needle 22 and the inner tube 11 should be as small as possible, so that it is inconvenient for the electrode needle 22 to penetrate into the inner tube 11 . For this reason, in this embodiment, by setting the inner hole of the inner tube 11 to include a large-diameter section, a transition section, and a small-diameter section, and setting the through hole 102 on the side wall of the smal...

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Abstract

The invention provides a radiofrequency ablation device, which comprises a sleeve unit, a radiofrequency ablation assembly and a liquid supply assembly. Wherein the sleeve unit comprises an inner tube and an outer tube which are nested and fixedly connected inside and outside, a cavity is defined between the inner tube and the outer tube, and a through hole is formed in a section side wall of the cavity, the side wall of the cavity is used for stretching into the body of a patient, and the through hole is used for communicating the cavity with the outside; an input port communicated with the cavity is formed in the section, used for remaining outside the body of the patient, of the sleeve unit; the radiofrequency ablation assembly comprises an electrode needle, and the electrode needle is used to pass through an inner hole of the inner tube; the liquid supply assembly comprises a liquid storage unit and a heating unit, the heating unit is used for heating liquid in the liquid storage unit, a communicating pipeline is arranged between the liquid storage unit and the input port, and the communicating pipeline is used for conveying the liquid into the cavity by the liquid storage unit. The radiofrequency ablation device can rapidly stop bleeding, and the risk that a tumor is planted and diffused along a needle passage is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a radiofrequency ablation device. Background technique [0002] In the prior art, for the diagnosis of tumors in the liver, kidney, etc., a biopsy needle can be punctured to the lesion, and a small amount of tissue at the lesion can be obtained for pathological analysis. For the treatment of this kind of lesion, the radiofrequency ablation needle can be inserted into the lesion, and the radiofrequency energy can cause the local tissue of the lesion to generate high temperature, so that the lesion tissue can be coagulated and necrotic to achieve the purpose of treatment. However, at present, after the ablation of the lesion is completed, when the radiofrequency ablation needle is pulled out, parenchymal organs such as the liver are often combined with bleeding, and there is still no effective way to stop bleeding. If the tumor is malignant, there is still a risk of plantin...

Claims

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Application Information

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IPC IPC(8): A61B18/14A61B18/04A61B10/02
CPCA61B18/14A61B18/04A61B10/02A61B2018/1425A61B2018/046A61B2018/00529
Inventor 刘洪甘雪梅孙建明张代忠柳凤玲杨中秋刘明忠张军
Owner 达州市中心医院
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