Microwave ablation needle with high-temperature-resistant coating

Abstract

The utility model belongs to the field of microwave ablation needles, and particularly relates to a microwave ablation needle with a high-temperature-resistant coating, which comprises an outer tube and an inner tube which are sleeved with each other, and a partition plate is clamped between the outer tube and the inner tube; the bottom of the outer tube and the bottom of the inner tube are connected with a needle seat, and a channel with the same inner diameter as the inner tube is formed in the middle of the needle seat. The two cooling pipes and the circulating pipe are combined to form a pipeline of a U-shaped structure, cooling liquid circulates in the pipeline of the U-shaped structure, in the cooling liquid conveying process, on one hand, heat emitted by an ablation needle cable is absorbed, on the other hand, heat conducted by the outer pipe is absorbed, the situation that high temperature directly acts on tissue and scalds are caused is prevented, and the use safety is improved. The dosing tube and the through holes are combined to form a medicine supply channel, after the tube plug is taken down, hemostatic can be conveyed to a bleeding position through the medicine supply channel, the multiple through holes are formed, the hemostatic can be distributed in a multi-point mode, and meanwhile the dosing tube can be matched with a suction device to adsorb and clean bloodstain.

Description

Technical Field

[0001] The utility model relates to the field of microwave ablation needles, in particular to a microwave ablation needle with a high-temperature resistant coating. Background Art

[0002] The principle of microwave ablation is to penetrate the tumor or nodule under the guidance of ultrasound or CT scans. The microwave field then generates heat through high-speed movement, rapidly heating the tumor or nodule, leading to necrosis and achieving the desired therapeutic effect. This method can inhibit tumor spread and enhance the patient's immune system.

[0003] The existing technology has the following problems:

[0004] 1. Microwave ablation needles have certain side effects and risks. The microwave ablation mechanism heats up quickly and is difficult to control, which may damage surrounding organs and cause mild burning pain during the procedure and low-grade fever after the procedure.

[0005] 2. During the microwave ablation needle operation, there is a risk of bleeding at the wound site. The radiofrequency ablation needle is in a closed state, and it is difficult for hemostatic drugs to directly act on the bleeding point. Utility Model Content

[0006] (1) Purpose of the utility model

[0007] In order to solve the technical problems existing in the background technology, the utility model proposes a microwave ablation needle with a high-temperature resistant coating, which has the characteristics of high-temperature resistance of the limb attachment end surface and convenient overall cooling.

[0008] (2) Technical solution

[0009] In order to solve the above technical problems, the utility model provides a microwave ablation needle with a high temperature resistant coating, comprising a sleeved outer tube and an inner tube, wherein a partition is sandwiched between the outer tube and the inner tube;

[0010] The bottoms of the outer tube and the inner tube are connected with a needle seat, and the middle of the needle seat is provided with a channel with the same inner diameter as that of the inner tube;

[0011] A microwave ablation mechanism is movably installed inside the inner tube, and the microwave ablation mechanism includes a microwave ablation needle penetrating the needle seat channel, and the tail of the microwave ablation needle is connected to an ablation needle cable;

[0012] The cooling mechanism includes symmetrically arranged cooling pipes, the cooling pipes are connected by a circulation pipe, and the tops of the two cooling pipes are each equipped with a connecting piece for connecting to an external cooling device;

[0013] The drug delivery mechanism comprises at least one drug delivery tube, the bottom of the drug delivery tube is provided with a through hole penetrating the needle seat, and the top of the drug delivery tube is provided with a detachable tube plug.

[0014] Preferably, the clamping gap between the outer tube and the inner tube is divided into two cavities by the partition.

[0015] Preferably, a cooling mechanism and a drug delivery mechanism are provided in the cavity separated by the outer tube and the inner tube.

[0016] Preferably, the outer wall of the cooling tube is formed with a heat conducting member attached to the outer tube and the partition.

[0017] Preferably, the drug delivery tube and the through hole are combined to form a drug delivery channel.

[0018] Preferably, the outer walls of the outer tube and the needle seat are provided with a high temperature resistant coating.

[0019] The above technical solution of the utility model has the following beneficial technical effects:

[0020] 1. A cooling mechanism is set up. Two cooling tubes and a circulation tube are combined into a "U-shaped" structure pipeline. The coolant circulates in the "U-shaped" structure pipeline. During the transmission of the coolant, on the one hand, it absorbs the heat released by the ablation needle cable, and on the other hand, it absorbs the heat conducted by the outer tube, preventing high temperature from directly acting on the tissue and causing burns, thereby improving the safety of use.

[0021] 2. The drug delivery tube and the through hole are combined into a drug supply channel. After removing the tube plug, the hemostatic drug can be delivered to the bleeding site through the drug supply channel. There are multiple through holes, which can distribute the hemostatic drug to multiple points. At the same time, the drug delivery tube can be combined with a suction device to absorb and clean blood stains, thereby improving functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic cross-sectional view of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the drug delivery mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the cooling mechanism structure of the present invention.

[0026] Reference numerals:

[0027] 11. Outer tube; 12. Partition; 13. Inner tube; 2. Needle holder; 31. Microwave ablation needle; 32. Ablation needle cable; 41. Cooling tube; 42. Connecting pipe; 43. Circulation tube; 44. Heat conducting part; 51. Drug delivery tube; 52. Tube plug; 53. Through hole. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0029] like Figure 1-4 As shown, the microwave ablation needle with a high-temperature resistant coating proposed by the present invention comprises an outer tube 11 and an inner tube 13, with a partition 12 sandwiched between the outer tube 11 and the inner tube 13;

[0030] The bottom of the outer tube 11 and the inner tube 13 are connected to the needle seat 2, and the middle of the needle seat 2 is provided with a channel with the same inner diameter as the inner tube 13;

[0031] A microwave ablation mechanism is movably installed inside the inner tube 13. The microwave ablation mechanism includes a microwave ablation needle 31 that passes through the channel of the needle holder 2. The tail of the microwave ablation needle 31 is connected to an ablation needle cable 32.

[0032] The cooling mechanism includes symmetrically arranged cooling pipes 41, which are connected by a circulation pipe 43, and a connecting pipe 42 for connecting to an external cooling device is installed on the top of each of the two cooling pipes 41;

[0033] The drug delivery mechanism includes at least one drug delivery tube 51 . A through hole 53 penetrating the needle seat 2 is installed at the bottom of the drug delivery tube 51 , and a detachable tube plug 52 is installed at the top.

[0034] It should be noted that the clamping gap between the outer tube 11 and the inner tube 13 is divided into two cavities by the partition 12; a cooling mechanism and a drug-dispensing mechanism are respectively provided in the two cavities, which can evenly cool and administer drugs to the part passing through the limb.

[0035] In this embodiment, during the microwave ablation operation, due to the inconvenience of heat dissipation at the ablation needle cable 32, the heated tube wall is prone to cause burns to the penetrating tissue. A cooling mechanism is provided, and an external cooling device is connected through a connecting pipe 42. The two cooling tubes 41 and the circulation tube 43 are combined into a "U-shaped" structure pipeline, and the coolant is circulated in the "U-shaped" structure pipeline. During the transmission of the coolant, on the one hand, the heat released by the ablation needle cable 32 is absorbed, and on the other hand, the heat conducted by the outer tube 11 is absorbed, so as to prevent high temperature from directly acting on the tissue to cause burns, thereby improving the safety of use.

[0036] In order to improve the heat absorption performance of the cooling tube 41, the outer wall of the cooling tube 41 is further formed with a heat conducting member 44 attached to the outer tube 11 and the partition 12; the heat conducting member 44 is attached to the entire tube wall from top to bottom to ensure that the heat penetrating into the tissue is evenly absorbed in the tube wall.

[0037] It should be added that the outer walls of the outer tube 11 and the needle seat 2 are provided with a high-temperature resistant coating; the outer tube 11 and the needle seat 2 are in direct contact with the tissue, and the high-temperature resistant coating is a layer of high-temperature wear-resistant material, such as ceramic or metal alloy, coated on its surface to enhance the high-temperature resistance and burn resistance of the needle tip. These materials have good thermal conductivity and high-temperature resistance, and can effectively disperse the heat energy generated by the needle tip and reduce the damage of heat to surrounding tissues.

[0038] In another embodiment, the drug delivery tube 51 and the through hole 53 are combined into a drug supply channel; after the tube plug 52 is removed, the hemostatic drug can be delivered to the bleeding site through the drug supply channel, wherein multiple through holes 53 are provided to distribute the hemostatic drug to multiple points.

[0039] It is understandable that by connecting the drug delivery tube 51 to an external suction device, the blood stains that have penetrated through the drug delivery tube 51 can be sucked in by suction, and the blood stains can be discharged to ensure the cleanliness of the microwave ablation site.

[0040] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A microwave ablation needle with a high temperature resistant coating, characterized in that: It comprises a sleeved outer tube (11) and an inner tube (13), wherein a partition (12) is sandwiched between the outer tube (11) and the inner tube (13); The bottoms of the outer tube (11) and the inner tube (13) are connected to a needle seat (2), and a channel with the same inner diameter as that of the inner tube (13) is opened in the middle of the needle seat (2); A microwave ablation mechanism is movably installed inside the inner tube (13), and the microwave ablation mechanism includes a microwave ablation needle (31) that passes through the channel of the needle seat (2), and the tail of the microwave ablation needle (31) is connected to an ablation needle cable (32); The cooling mechanism comprises symmetrically arranged cooling pipes (41), the cooling pipes (41) are connected by a circulation pipe (43), and a connecting pipe (42) for connecting to an external cooling device is installed on the top of each of the two cooling pipes (41); The dosing mechanism comprises at least one dosing tube (51), the bottom of the dosing tube (51) is provided with a through hole (53) penetrating the needle seat (2), and the top is provided with a detachable tube plug (52).

2. The microwave ablation needle with a high temperature resistant coating according to claim 1, characterized in that: The clamping gap between the outer tube (11) and the inner tube (13) is divided into two cavities by the partition (12).

3. The microwave ablation needle with a high temperature resistant coating according to claim 2, characterized in that: A cooling mechanism and a drug delivery mechanism are both provided in the cavity separated by the outer tube (11) and the inner tube (13).

4. The microwave ablation needle with a high temperature resistant coating according to claim 1, characterized in that: The outer wall of the cooling tube (41) is formed with a heat conducting member (44) attached to the outer tube (11) and the partition (12).

5. The microwave ablation needle with a high temperature resistant coating according to claim 1, characterized in that: The drug delivery tube (51) and the through hole (53) are combined to form a drug delivery channel.

6. The microwave ablation needle with a high temperature resistant coating according to claim 1, characterized in that: The outer walls of the outer tube (11) and the needle seat (2) are provided with a high-temperature resistant coating.

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