Puncture steam ablation structure of ablation gun

Abstract

The utility model discloses a puncture steam ablation structure of an ablation gun, which comprises a tube seat positioned at the front end of a grip shell, a sleeve connected to the middle of the tube seat, a protective sleeve arranged at the front end of the sleeve, a steam delivery tube slidably arranged in the sleeve in a penetrating manner, and a puncture needle connected to the front end of the steam delivery tube and having a certain elastic deformation capability. The puncture needle is located in the inner cavity of the protective sleeve, a puncture needle outlet is formed in the side wall of the protective sleeve, and a guide surface capable of guiding the puncture needle which extends out of the puncture needle outlet is further arranged in the inner cavity of the protective sleeve; a plurality of steam holes are formed in the puncture needle. The puncture steam ablation structure of the ablation gun is convenient to operate, the puncture needle laterally extends out, and the probability that an outlet of the puncture needle is blocked can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of ablation surgery, in particular to a puncture steam ablation structure of an ablation gun. Background Art

[0002] Thermal steam ablation surgery is a minimally invasive, safe and fast recovery treatment method with good treatment effect. It can treat gland hyperplasia by injecting high-temperature steam into the gland, so as to achieve the purpose of reducing the gland volume. Because of its strong pertinence, it is not easy to cause adverse damage to the healthy tissues near the affected area of the human body.

[0003] At present, in thermal steam ablation surgery, generally, a cannula is inserted into the human body by hand. A telescopic steam delivery tube is arranged inside the cannula. The position to be treated is located by cooperating with an endoscope. The puncture needle at the front end of the steam delivery tube is inserted into the position to be treated and steam is injected. Its operation difficulty is high. In addition, when the steam delivery tube makes a linear telescopic movement, the puncture needle at its front end also makes a linear telescopic movement. Therefore, the puncture needle outlet of the cannula faces directly forward. When medical staff operate the cannula to advance in the patient's body, the internal tissues are easy to block the puncture needle outlet, resulting in great resistance when the puncture needle extends and difficult operation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a puncture steam ablation structure of an ablation gun, which is not only convenient to operate, but also the puncture needle extends laterally, which can reduce the probability of blockage of the puncture needle outlet.

[0005] To achieve the above purpose, the utility model provides a puncture steam ablation structure of an ablation gun, which includes a tube seat at the front end of a grip housing. A cannula is connected to the middle of the tube seat. A protective sleeve is arranged at the front end of the cannula. A steam delivery tube is slidably inserted through the cannula. The front end of the steam delivery tube is connected with a puncture needle with a certain elastic deformation ability. The puncture needle is located in the inner cavity of the protective sleeve. A puncture needle outlet is arranged on the side wall of the protective sleeve. A guiding surface is also arranged in the inner cavity of the protective sleeve, which can guide the puncture needle making an elongation movement to extend out from the puncture needle outlet; a plurality of steam holes are arranged on the puncture needle.

[0006] As a further improvement of the utility model, the guiding surface forms an angle with the length direction of the cannula.

[0007] As a further improvement of the utility model, a telescopic driving mechanism for driving the steam delivery tube to reciprocally slide along the length direction of the cannula is connected to the tube seat.

[0008] As a further improvement of the present utility model, the telescopic driving mechanism is a magnetic telescopic driving mechanism, which includes a coil bracket made of insulating material. An electromagnetic coil is sleeved outside the coil bracket, and a permanent magnet is arranged inside the coil bracket and is in sliding fit with it along the axis. The steam delivery pipe is connected to the permanent magnet; the coil bracket is connected to the pipe seat; the permanent magnet is slidably sleeved outside the guide rail, and the guide rail is arranged side by side with the sleeve, and the guide rail is connected to the pipe seat.

[0009] As a further improvement of the present utility model, a first switch and a second switch are arranged on the grip housing. The first switch, the second switch and the electromagnetic coil are all electrically connected to the controller, and the controller is electrically connected to a power source.

[0010] As a further improvement of the present utility model, the rear end of the steam delivery pipe is connected with an electric heating water storage tank through a steam hose, and the electric heating water storage tank is located inside the grip housing.

[0011] Beneficial effects

[0012] Compared with the prior art, the advantages of the puncture steam ablation structure of the ablation gun of the present utility model are as follows:

[0013] 1. Since the puncture needle has a certain elastic deformation ability, when the steam delivery pipe is driven by the telescopic driving mechanism to move forward along the sleeve, the puncture needle at the front end of the steam delivery pipe extends out from the puncture needle outlet on one side of the protective sleeve under the action of the guiding surface of the protective sleeve. Since the puncture needle outlet is located on one side of the protective sleeve, and the front end of the protective sleeve is a smooth arc surface and no opening is provided, when the protective sleeve is advanced into the patient's body along with the sleeve, the internal tissues are not easy to block the puncture needle outlet, ensuring that the resistance received when the puncture needle extends out from the puncture needle outlet is small, which is beneficial to improving the implementation efficiency of the operation.

[0014] 2. By operating the first switch and the second switch respectively, the circuit direction in the electromagnetic coil can be reversed to form magnetic fields in different directions, thereby driving the permanent magnet to drive the steam delivery pipe to perform linear telescopic movement. The structure is simple and the operation is convenient.

[0015] 3. Integrating the electric heating water storage tank inside the grip housing can reduce the volume of the device, and at the same time, the delivery distance after steam generation can be shortened, reducing heat loss.

[0016] Through the following description and in combination with the drawings, the present utility model will become clearer. These drawings are used to explain the embodiments of the present utility model. Description of the drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the front view of the ablation gun;

[0019] Figure 2 is the internal structure diagram of the ablation gun;

[0020] Figure 3 is the structure diagram of the puncture needle;

[0021] Figure 4 is the front view of the puncture needle and the protective sleeve;

[0022] Figure 5 is the cross-sectional view of the protective sleeve;

[0023] Figure 6 is the cross-sectional view of the magnetic telescopic drive mechanism. Specific Embodiments

[0024] Now, the embodiments of the present invention will be described with reference to the drawings.

[0025] Embodiment

[0026] The specific embodiment of the present invention is as Figures 1 to 6 shown. A puncture steam ablation structure of an ablation gun includes a tube seat 11 at the front end of a grip housing 1. A sleeve 24 is connected to the middle of the tube seat 11. A protective sleeve 30 is provided at the front end of the sleeve 24. A steam delivery pipe 21 is slidably inserted through the sleeve 24. The front end of the steam delivery pipe 21 is connected to a puncture needle 22 having a certain elastic deformation ability. The puncture needle 22 is located in the inner cavity of the protective sleeve 30. A puncture needle outlet 302 is provided on the side wall of the protective sleeve 30. A guiding surface 301 capable of guiding the puncture needle 22 that makes an elongation movement to extend out from the puncture needle outlet 302 is also provided in the inner cavity of the protective sleeve 30. A plurality of steam holes 221 are provided on the puncture needle 22. Among them, the front end of the protective sleeve 30 is in a smooth arc shape and no opening is provided. The front end of the puncture needle 22 is hard to ensure that it can penetrate the gland.

[0027] The guiding surface 301 forms an angle with the length direction of the sleeve 24.

[0028] A telescopic driving mechanism 4 for driving the steam delivery pipe 21 to reciprocally slide along the length direction of the sleeve 24 is connected to the pipe socket 11. In this embodiment, the telescopic driving mechanism 4 is a magnetic telescopic driving mechanism, which includes a coil bracket 42 made of insulating material. An electromagnetic coil 43 is sleeved outside the coil bracket 42, and a permanent magnet 41 that is slidably matched with the coil bracket 42 along the axis is arranged inside the coil bracket 42. The steam delivery pipe 21 is connected to the permanent magnet 41. The coil bracket 42 is connected to the pipe socket 11. The permanent magnet 41 is slidably sleeved outside the guide rail 3. The guide rail 3 is arranged side by side with the sleeve 24, and the guide rail 3 is connected to the pipe socket 11.

[0029] A first switch 44 and a second switch 45 are arranged on the grip housing 1. The first switch 44, the second switch 45 and the electromagnetic coil 43 are all electrically connected to a controller, and the controller is electrically connected to a power supply. The first switch 44 and the second switch 45 can adopt mechanical switches such as buttons and toggle levers, or can also adopt inductive switches. In this embodiment, buttons are adopted.

[0030] Operating the first switch 44 can make the electromagnetic coil 43 be energized in the forward direction. At this time, the magnetic field drives the permanent magnet 41 to approach the pipe socket 11 side, driving the steam delivery pipe 21 and the puncture needle 22 to move, so that the puncture needle 22 extends out from the puncture needle outlet 302. At this time, the puncture needle 22 can pierce into the affected part of the patient and inject steam into the interior. Operating the second switch 45 can make the electromagnetic coil 43 be energized in the reverse direction. At this time, the magnetic field is reversed and drives the permanent magnet 41 to move away from the pipe socket 11, driving the steam delivery pipe 21 and the puncture needle 22 to move, so that the puncture needle 22 retracts into the protective sleeve 30, ensuring that the puncture needle 22 will not scratch the internal tissues of the patient due to extension when the protective sleeve 30 moves in the patient's body. The operation is simple and safe.

[0031] The rear end of the steam delivery pipe 21 is connected to an electric heating water storage tank 5 through a steam hose 23. The electric heating water storage tank 5 is located on a mounting bracket 6 inside the grip housing 1. The electric heating water storage tank 5 heats the water body through an electric heating wire to generate steam. The steam passes through the steam hose 23 and the steam delivery pipe 21 and emerges from the steam hole 221 of the puncture needle 22.

[0032] In addition to the above embodiments, the telescopic driving mechanism 4 can also adopt the method of using a linear motor to drive the steam delivery pipe 21 to perform linear telescoping.

[0033] The above describes the present invention in combination with the best embodiments, but the present invention is not limited to the disclosed embodiments above, and should cover various modifications and equivalent combinations made according to the essence of the present invention.

Claims

1. The puncture steam ablation structure of an ablation gun, characterized in that, The invention comprises a tube seat (11) located at the front end of the handle shell (1), a sleeve (24) is connected to the middle of the tube seat (11), a protective sleeve (30) is provided at the front end of the sleeve (24), a steam delivery pipe (21) is slidably passed through the sleeve (24), a puncture needle (22) with a certain elastic deformation ability is connected to the front end of the steam delivery pipe (21), the puncture needle (22) is located in the inner cavity of the protective sleeve (30), a puncture needle outlet (302) is provided on the side wall of the protective sleeve (30), and a guide surface (301) is also provided in the inner cavity of the protective sleeve (30) for guiding the puncture needle (22) to extend from the puncture needle outlet (302); a plurality of steam holes (221) are provided on the puncture needle (22).

2. The puncture steam ablation structure of an ablation gun according to claim 1, characterized in that, The guide surface (301) forms an angle with the length direction of the sleeve (24).

3. The puncture steam ablation structure of an ablation gun according to claim 1 or 2, characterized in that, The pipe seat (11) is connected to a telescopic driving mechanism (4) for driving the steam delivery pipe (21) to slide back and forth along the length direction of the sleeve (24).

4. The puncture steam ablation structure of an ablation gun according to claim 3, characterized in that, The telescopic drive mechanism (4) is a magnetic telescopic drive mechanism, comprising a coil support (42) made of insulating material, an electromagnetic coil (43) being sleeved on the outside of the coil support (42), a permanent magnet (41) being provided on the inside of the coil support (42) and slidingly cooperating with the electromagnetic coil along the axis, the steam delivery pipe (21) being connected to the permanent magnet (41); the coil support (42) being connected to the pipe seat (11); the permanent magnet (41) being slidably sleeved on the outside of the guide rail (3), the guide rail (3) and the sleeve (24) being arranged in parallel, and the guide rail (3) being connected to the pipe seat (11).

5. The puncture steam ablation structure of an ablation gun according to claim 4, characterized in that, The handle housing (1) is provided with a first switch (44) and a second switch (45); the first switch (44), the second switch (45) and the electromagnetic coil (43) are all electrically connected to a controller; and the controller is electrically connected to a power source.

6. The puncture steam ablation structure of an ablation gun according to claim 1, characterized in that, The rear end of the steam delivery pipe (21) is connected to an electric heating water storage tank (5) via a steam hose (23), and the electric heating water storage tank (5) is located in the handle housing (1).

7. The puncture steam ablation structure of the ablation gun according to claim 1, characterized in that: The front end of the protective sleeve (30) is a smooth arc surface.

Images