Steam generating device of steam ablation gun

Abstract

The utility model discloses a steam generating device for a steam ablation gun, comprising a mounting bracket and a sleeve assembly arranged in a handle shell of the ablation gun, wherein a metal spiral coil and a radio frequency spiral wire are arranged in the sleeve assembly, a water inlet and a steam outlet are respectively arranged at two ends of the metal spiral coil, and the radio frequency spiral wire is sleeved on the outside of the metal spiral coil; the sleeve assembly is mounted on the mounting bracket through a first clamping structure. The steam generating device for a steam ablation gun provided by the utility model can set the steam generating structure in the handle shell of the ablation gun, shorten the steam transmission path, and reduce the heat loss of the steam.

Description

Technical Field

[0001] The utility model relates to the field of steam ablation, in particular to a steam generating device of a steam ablation gun. Background Art

[0002] Thermal steam ablation is a minimally invasive, safe, and fast-recovering treatment method with good therapeutic effects. It can treat glandular hyperplasia by injecting high-temperature steam into the gland to reduce the size of the gland. Due to its strong targeting, it is not easy to cause adverse damage to healthy tissues near the affected area of ​​the human body.

[0003] At present, thermal steam ablation surgery generally uses manual insertion of a steam delivery tube into the human body, and with the help of an endoscope to locate the area to be treated, the puncture needle at the front end of the steam delivery tube is inserted into the area to be treated and steam is injected. Compared with the traditional method of manually introducing a steam delivery tube, the use of an ablation gun can utilize the telescopic structure of the ablation gun to drive the puncture needle to extend and retract from one end of the cannula, which is convenient for operation, but the steam generating structure is arranged outside the ablation gun. The steam first enters the ablation gun, and then goes to the puncture needle through the steam delivery tube in the ablation gun, and finally the steam is injected into the affected part of the human body. In this process, because the steam is far away from the puncture needle, the heat loss of the steam during the transportation process is large, resulting in insufficient temperature of the steam when it contacts the affected part, and the ablation gun also lacks a structure for installing a steam generator. Utility Model Content

[0004] The utility model aims to provide a steam generating device for a steam ablation gun, which can arrange a steam generating structure in a handle shell of the ablation gun, shorten the steam delivery path, and reduce the heat loss of the steam.

[0005] To achieve the above-mentioned purpose, the utility model provides a steam generating device for a steam ablation gun, comprising a mounting bracket and a sleeve assembly arranged in the handle shell of the ablation gun, the sleeve assembly is provided with a metal spiral coil and a radio frequency spiral wire, the two ends of the metal spiral coil are respectively provided with a water inlet and a steam outlet, the radio frequency spiral wire is sleeved on the outside of the metal spiral coil; the sleeve assembly is installed on the mounting bracket through a first clamping structure.

[0006] As a further improvement of the present invention, the sleeve assembly is made of insulating material, and includes an inner cylinder and an outer cylinder which are sleeved with each other; the metal spiral coil is located on the inner side of the inner cylinder, and the radio frequency spiral wire is located between the outer wall of the inner cylinder and the inner wall of the outer cylinder; an insulation layer is provided between the inner side of the inner cylinder and the metal spiral coil; the water inlet and steam outlet of the metal spiral coil both pass through to the outside of the sleeve assembly.

[0007] As a further improvement of the utility model, the inner cylinder includes an end plate and an inner cylinder body connected to each other, the side wall of the end plate protrudes from the side wall of the inner cylinder body, the inner cylinder body is provided with a first inner cavity, and the metal spiral coil is located in the first inner cavity; the outer cylinder is provided with a second inner cavity, the inner cylinder body is located on the inner side of the second inner cavity, the radio frequency spiral wire is sleeved between the inner wall of the second inner cavity and the outer wall of the inner cylinder, and the inner cylinder is connected to the outer cylinder.

[0008] As a further improvement of the utility model, one end of the outer cylinder is provided with an internal thread, the end plate of the inner cylinder is provided with an external thread, and the internal thread of the outer cylinder is threadably matched with the external thread of the inner cylinder.

[0009] As a further improvement of the utility model, a first through hole is provided on the end plate, and a second through hole is provided on the outer tube; the two ends of the RF spiral wire are respectively provided with a first terminal and a second terminal, the first terminal passes through the first through hole to the outside of the inner tube, and the second terminal passes through the second through hole to the outside of the outer tube.

[0010] As a further improvement of the present invention, symmetrically arranged slots are provided on the outer walls on both sides of the outer cylinder, a support portion and at least a pair of arc-shaped clamping portions are provided on one side of the mounting bracket, the support portion is in contact with one side of the outer cylinder, a pair of two arc-shaped clamping portions are symmetrically arranged, the inner side surface of each arc-shaped clamping portion is adapted to the side wall of the outer cylinder, a clamping block is provided at the free end of the arc-shaped clamping portion, and the clamping block of the arc-shaped clamping portion is engaged with the slot of the outer cylinder.

[0011] Beneficial Effects

[0012] Compared with the prior art, the steam generating device of the steam ablation gun of the utility model has the following advantages:

[0013] 1. Since the metal spiral coil and the radio frequency spiral wire are installed in the handle shell through the sleeve assembly, the radio frequency spiral wire forms an eddy current after being energized, driving the metal spiral coil to heat the passing water to form steam, thereby realizing the formation of steam in the ablation gun, shortening the time required for steam to contact the affected area from generation, reducing heat loss, and achieving better ablation effect.

[0014] 2. The metal spiral coil and the RF spiral wire are installed in the insulating sleeve assembly. The relative position of the two will not change due to the shaking of the ablation gun, which can prevent the axial displacement between the two from weakening the heating effect and ensure stable steam output. An insulation layer is provided between the inner cylinder of the sleeve assembly and the metal spiral coil to avoid the problem of the inner cylinder being damaged by high temperature.

[0015] 3. A space for accommodating the RF helix is ​​formed between the inner and outer cylinders to prevent the RF helix from being damaged due to contact with other components. The inner and outer cylinders are fixed by threaded connection, which is convenient for assembly and disassembly.

[0016] 4. The outer tube of the sleeve assembly is clamped by at least one pair of arc-shaped clamping parts located on the mounting bracket, and the clamping blocks at the free ends of the arc-shaped clamping parts are engaged with the clamping grooves on the side walls of the outer tube, thereby realizing rapid fixation of the sleeve assembly during installation.

[0017] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a cross-sectional view of the installation state of the sleeve assembly, the metal spiral coil and the radio frequency spiral wire;

[0020] Figure 2 It is a cross-sectional view of the sleeve assembly, the metal spiral coil and the radio frequency spiral wire in an exploded state;

[0021] Figure 3 is a cross-sectional view of an ablation gun;

[0022] Figure 4 is the front view of the sleeve assembly;

[0023] Figure 5 for Figure 3 AA view;

[0024] Figure 6 A schematic diagram of the handle housing. DETAILED DESCRIPTION

[0025] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0026] Example

[0027] The specific implementation of the utility model is as follows Figures 1 to 6 As shown, a steam generating device of a steam ablation gun comprises a mounting bracket 6 and a sleeve assembly 5 arranged in a handle housing 1 of the ablation gun, wherein a metal spiral coil 51 and a radio frequency spiral wire 52 are arranged in the sleeve assembly 5, a water inlet 511 and a steam outlet 512 are respectively arranged at two ends of the metal spiral coil 51, and the radio frequency spiral wire 52 is sleeved on the outside of the metal spiral coil 51. The sleeve assembly 5 is mounted on the mounting bracket 6 through a first clamping structure.

[0028] The sleeve assembly 5 is made of insulating material, and includes an inner tube 53 and an outer tube 54 which are sleeved together. The metal spiral coil 51 is located inside the inner tube 53, and the RF spiral line 52 is located between the outer wall of the inner tube 53 and the inner wall of the outer tube 54. A heat insulation layer 55 is provided between the inner side of the inner tube 53 and the metal spiral coil 51. The water inlet 511 and the steam outlet 512 of the metal spiral coil 51 are both extended to the outside of the sleeve assembly 5.

[0029] The inner cylinder 53 includes an end plate 531 and an inner cylinder body 532 connected to each other. The side wall of the end plate 531 protrudes from the side wall of the inner cylinder body 532. The inner cylinder body 532 is provided with a first inner cavity 533, and the metal spiral coil 51 is located in the first inner cavity 533. The outer cylinder 54 is provided with a second inner cavity 541. The inner cylinder body 532 is located inside the second inner cavity 541. The RF spiral line 52 is sleeved between the inner wall of the second inner cavity 541 and the outer wall of the inner cylinder body 532. The inner cylinder 53 is connected to the outer cylinder 54.

[0030] An internal thread 543 is provided at one end of the outer cylinder 54 , and an external thread 535 is provided on the end plate 531 of the inner cylinder 53 . The internal thread 543 of the outer cylinder 54 is threadably matched with the external thread 535 of the inner cylinder 53 .

[0031] The end plate 531 is provided with a first through hole 534, and the outer cylinder 54 is provided with a second through hole 542. The two ends of the RF helix 52 are provided with a first terminal 521 and a second terminal 522, respectively. The first terminal 521 passes through the first through hole 534 to the outside of the inner cylinder 53, and the second terminal 522 passes through the second through hole 542 to the outside of the outer cylinder 54. The first terminal 521 and the second terminal 522 are used to connect to a power source.

[0032] Symmetrically arranged card grooves 544 are provided on the outer walls on both sides of the outer cylinder 54, and a support portion 61 and at least a pair of arc-shaped clamping portions 62 are provided on one side of the mounting bracket 6. The support portion 61 is in contact with one side of the outer cylinder 54, and a pair of two arc-shaped clamping portions 62 are symmetrically arranged. The inner side surface of each arc-shaped clamping portion 62 is adapted to the side wall of the outer cylinder 54, and a clamping block 63 is provided at the free end of the arc-shaped clamping portion 62. The clamping block 63 of the arc-shaped clamping portion 62 is engaged with the card groove 544 of the outer cylinder 54.

[0033] When the radio frequency spiral line 52 is supplied with current, an eddy current is formed, which heats the metal spiral coil 51. The water entering the metal spiral coil 51 from the water inlet 511 is heated to form steam, which is output from the steam outlet 512. The steam outlet 512 of the metal spiral coil 51 is connected to the steam delivery pipe 21 located in the handle housing 1 through the hose 23. The front end of the steam delivery pipe 21 is provided with a puncture needle 22. The steam is output from the puncture needle 22 and contacts the affected part in the human body, achieving the ablation treatment effect.

[0034] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A steam generating device for a steam ablation gun, characterized in that: The invention comprises a mounting bracket (6) and a sleeve assembly (5) arranged in a handle shell (1) of an ablation gun, wherein a metal spiral coil (51) and a radio frequency spiral wire (52) are arranged in the sleeve assembly (5), a water inlet (511) and a steam outlet (512) are respectively arranged at two ends of the metal spiral coil (51), and the radio frequency spiral wire (52) is sleeved on the outer side of the metal spiral coil (51); the sleeve assembly (5) is mounted on the mounting bracket (6) by means of a first clamping structure.

2. The steam generating device of a steam ablation gun according to claim 1, characterized in that: The sleeve assembly (5) is made of insulating material and comprises an inner tube (53) and an outer tube (54) which are sleeved together; the metal spiral coil (51) is located inside the inner tube (53), and the radio frequency spiral line (52) is located between the outer wall of the inner tube (53) and the inner wall of the outer tube (54); a heat insulation layer (55) is provided between the inner side of the inner tube (53) and the metal spiral coil (51); and the water inlet (511) and the steam outlet (512) of the metal spiral coil (51) are both extended out of the sleeve assembly (5).

3. The steam generating device of a steam ablation gun according to claim 2, characterized in that: The inner cylinder (53) comprises an end plate (531) and an inner cylinder body (532) connected to each other, the side wall of the end plate (531) protrudes from the side wall of the inner cylinder body (532), the inner cylinder body (532) is provided with a first inner cavity (533), and the metal spiral coil (51) is located in the first inner cavity (533); the outer cylinder (54) is provided with a second inner cavity (541), the inner cylinder body (532) is located inside the second inner cavity (541), the radio frequency spiral wire (52) is sleeved between the inner wall of the second inner cavity (541) and the outer wall of the inner cylinder body (532), and the inner cylinder (53) is connected to the outer cylinder (54).

4. The steam generating device of a steam ablation gun according to claim 3, characterized in that: One end of the outer cylinder (54) is provided with an internal thread (543), and the end plate (531) of the inner cylinder (53) is provided with an external thread (535). The internal thread (543) of the outer cylinder (54) is threadably matched with the external thread (535) of the inner cylinder (53).

5. The steam generating device of a steam ablation gun according to claim 3, characterized in that: The end plate (531) is provided with a first through hole (534), and the outer tube (54) is provided with a second through hole (542); the two ends of the radio frequency helical wire (52) are respectively provided with a first terminal (521) and a second terminal (522); the first terminal (521) passes through the first through hole (534) to the outside of the inner tube (53), and the second terminal (522) passes through the second through hole (542) to the outside of the outer tube (54).

6. The steam generating device of a steam ablation gun according to claim 2, characterized in that: The outer walls of both sides of the outer cylinder (54) are provided with symmetrically arranged slots (544); one side of the mounting bracket (6) is provided with a support portion (61) and at least one pair of arc-shaped clamping portions (62); the support portion (61) is in contact with one side of the outer cylinder (54); the pair of two arc-shaped clamping portions (62) are symmetrically arranged; the inner side surface of each arc-shaped clamping portion (62) is adapted to the side wall of the outer cylinder (54); a clamping block (63) is provided at the free end of the arc-shaped clamping portion (62); the clamping block (63) of the arc-shaped clamping portion (62) is clamped and matched with the slot (544) of the outer cylinder (54).

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