Microwave ablation support device under guidance of CT (Computed Tomography)

Abstract

The device consists of three parts, one part is a base adhered to the surface of a human body, and the three parts are respectively adhered to the periphery of a to-be-punctured part on the surface of the human body during use; one end of each second part connecting rod is connected with a round hole in the base, and the other end of each second part connecting rod is connected with an annular fixing ring penetrating through the microwave ablation needle; the third part is a connecting ring sleeved on the microwave ablation needle, and a small circular ring is arranged on the third part in a turnover trisection mode and used for being connected with the fixing rod. When microwave ablation treatment is carried out on a malignant tumor patient, according to a treatment plan, three bases are attached to the periphery of a to-be-ablated part, a microwave ablation needle is sleeved with the connecting rings, the bases and the connecting rings are connected through the connecting rods, and the needle inserting direction of microwave ablation is adjusted by changing the positions of the connecting rods and the connecting rings. Therefore, the puncture needle cannot deviate from the correct direction due to the gravity effect and the respiratory movement of a patient in the puncture process and the CT scanning process.

Description

Technical Field

[0001] The device is used for patients with clearly diagnosed malignant tumors to assist in maintaining the fixation and precise puncture direction of the microwave ablation needle during percutaneous puncture during microwave ablation treatment, thereby improving puncture accuracy, achieving better puncture treatment effects and reducing the risk of bleeding caused by repeated punctures. Background Art

[0002] Microwave ablation technology for solid malignant tumors mainly uses the principle of thermal damage to kill tumor cells. In clinical practice, it is generally guided by CT or B-ultrasound machines to insert microwave ablation needles into tumor tissues through the skin. The effect of ablation treatment depends on the size of the tumor on the one hand, and on whether the puncture is the central axis of the tumor on the other hand. Therefore, improving the accuracy of puncture is crucial to improving the effect of ablation treatment. At the same time, in clinical work, in order to make the puncture path as close to the central axis of the tumor as possible, it is generally necessary to adjust the puncture path multiple times. In this process, the puncture needle will cause multiple puncture injuries to human organs at the puncture site. As the number of punctures increases, the probability of bleeding and damage to human organs increases significantly. Summary of the invention

[0003] The invention consists of three parts. One part is a base that is pasted on the surface of the human body. There are three of them. When in use, they are pasted around the intended puncture site on the surface of the human body. The second part is a connecting rod, one end of which is connected to the circular hole in the base, and the other end is connected to the annular fixing ring on the microwave ablation needle. There are three of them in total. The third part is a connecting ring that is sleeved on the microwave ablation needle. A small ring is provided in three equal parts of its rotation for connecting the fixing rod. When performing microwave ablation treatment on patients with malignant tumors, according to the treatment plan, three bases are respectively pasted around the intended ablation site, and the connecting ring is inserted into the microwave ablation needle. The base and the connecting ring are respectively connected by connecting rods. By changing the position of each connecting rod and the connecting ring, the needle insertion direction of microwave ablation can be adjusted. Thereby, the puncture needle will not deviate from the correct direction due to gravity and the patient's breathing movement during the puncture and CT scanning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 The effect picture of the combination with microwave ablation needle; Figure 2 The base portion used to adhere the towel to the human body surface; Figure 3 Connecting rod; Figure 4 A fixed connection ring mounted on the microwave ablation device; Figure 5 Longitudinal cross-sectional view of the connecting ring mounted on the microwave ablation needle.

Claims

1. A device for fixing a microwave ablation needle, which consists of three parts: a base, a connecting rod and a connecting ring.

2. Based on the design method described in claim 1.

3. Based on claim 1, the base is made of medical plastic, the back is a self-adhesive sticker that is harmless to the human body, and the material can be sterilized using ethylene oxide.

4. Based on claim 1, the connecting rod is made of medical plastic, and the material can be used for ethylene oxide sterilization.

5. Based on claim 1, the connecting ring sleeved on the microwave ablation needle is made of medical silicone and can be sterilized using ethylene oxide.

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