CN114469277A

CN114469277A - Visible puncture microwave ablation system

Info

Publication number: CN114469277A
Application number: CN202210053444.6A
Authority: CN
Inventors: 史军; 张宝青
Original assignee: Blue Line Platinum Life Technology Suzhou Co ltd
Current assignee: Blue Line Platinum Life Technology Suzhou Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-05-13

Abstract

The application discloses visual puncture microwave ablation system, including microwave generator, with the function body that microwave generator connects, and formation of image lighting device, the function body has puncture, the microwave ablation function of tissue, the formation of image lighting device is lighted and is imaged and conduct back external display system with forming image or video signal in real time at the function body and organize puncture and treatment in order to assist puncture and microwave ablation, wherein formation of image lighting device is located completely or partly the function is internal, wherein the function body is inside still including annotating the thing chamber, it is open to the tissue to annotate the thing chamber. Compared with the prior art, the visible puncture microwave ablation system realizes visibility in the whole process of puncture, diagnosis and treatment, accurately finishes the purpose of treatment in the shortest time and the smallest wound and reduces the pain of patients.

Description

Visible puncture microwave ablation system

Technical Field

The invention relates to medical equipment, in particular to a visible puncture microwave ablation system.

Background

At present, the microwave thermal ablation therapy is widely applied to clinical tumor treatment nowadays due to the advantages of minimal invasion, small toxic and side effects, wide adaptation diseases and the like, and is particularly applied to common tumors such as liver cancer, lung cancer, kidney cancer and the like. The basic procedure of the operation clinically using the microwave ablation needle at present is as follows: the microwave ablation needle is guided by ultrasound or X-ray to insert the needle body into a human body, and then therapy is carried out through electric heating. In the above-described procedure, when the puncture needle is used for puncturing, the puncture is generally performed as an indirect image under guidance by an auxiliary means such as an ultrasonic probe or X-ray. However, due to the observation feature of indirect images, it is difficult for the operator to accurately puncture the target site at one time. Thus, multiple punctures may be required, resulting in increased trauma, delayed recovery, and possibly even infection. In addition, the traditional microwave ablation needle cannot directly view a puncture path due to the fact that the traditional microwave ablation needle does not have a visual function, so that tissue or blood vessel damage is often caused, pain is brought to a patient, and meanwhile real-time monitoring of a treatment process and evaluation of treatment conditions cannot be achieved.

Disclosure of Invention

The invention aims to provide a visual puncture microwave ablation system, which realizes visualization in the whole process of puncture, diagnosis and treatment, accurately finishes the treatment purpose in the shortest time and the smallest trauma and reduces the pain of a patient.

Specifically, the above technical problem is solved by the following embodiments:

1. the utility model provides a visual puncture microwave ablation system, includes the microwave generator, with the function body that microwave generator connects, and formation of image lighting device, the function body has puncture, the microwave ablation function of tissue, the formation of image lighting device is lighted and is imaged and conduct back external display system with forming image or video signal in real time at the function body and organize puncture and treatment in order to assist puncture and microwave ablation, wherein the formation of image lighting device is located completely or partly in the function body, wherein the function body is inside still including annotating the thing chamber, it is open to the tissue to annotate the thing chamber.

2. The visual puncture microwave ablation system of embodiment 1, wherein the functional body further comprises a microwave ablation cooling cavity inside, and the microwave ablation cooling cavity is closed by an internal circulation.

3. The visual puncture microwave ablation system according to any one of embodiments 1-2, wherein the functional body comprises a puncture needle, a needle head at the distal end of the puncture needle, and a needle tube connected to the needle head, and the imaging illumination device is disposed in the needle tube.

4. The visual puncture microwave ablation system of embodiment 3, wherein the proximal needle end of the imaging illumination device is juxtaposed with or contained within the injection cavity, preferably the proximal needle end of the imaging illumination device is contained within the injection cavity.

5. The visual puncture microwave ablation system according to embodiment 4, wherein the injection cavity includes an injection passage located inside the needle tube, an injection port located at the distal end of the needle and located inside the needle tube and communicating with the outside, and an outlet port opening at the proximal end of the needle, and the microwave ablation cooling cavity includes a circulating medium injection port and a circulating medium recovery port disposed at a side away from the needle, and a circulating medium inlet and outlet loop located inside the needle.

6. The visual puncture microwave ablation system of any one of embodiments 1-5, wherein said imaging illumination device comprises a lens and an illumination device, preferably said lens is an optical lens or an electronic lens, preferably said illumination device is disposed partially or completely around said lens.

7. The visual puncture microwave ablation system of embodiment 6, wherein said lens can be adjusted in position longitudinally or laterally as desired for viewing.

8. The visual puncture microwave ablation system of embodiment 6 or 7, wherein the visual puncture microwave ablation system further comprises an illumination source disposed at the needle end or the distal needle end, the distal needle end light source being transmitted to the needle end by the light conducting assembly for illumination.

9. The visual puncture microwave ablation system of embodiment 8, wherein the functional body further comprises a handle disposed on a side of the needle tube away from the needle, the light source is disposed within the handle, and the light source and the handle are integrated.

10. The system of embodiment 9, wherein the system further comprises an adapter electrically connected to the lens and the light source, the adapter having an image conducting connector thereon, the adapter being fixed relative to the handle.

11. The system according to any of embodiments 5-10, wherein the object that can be injected into the injection cavity through the injection port comprises a medical fluid or other fluid needed by the body tissue for diagnosis and treatment, or other instruments needed for surgery, such as a laser fiber, a guide wire, a biopsy forceps, a basket, etc.

12. The visual puncture microwave ablation system according to any one of embodiments 5-10, wherein the circulating medium in and out of said circulating medium circuit is water or other liquid for cooling.

13. The visual puncture microwave ablation system of any one of embodiments 1-12, wherein said visual puncture microwave ablation system further comprises a temperature control device for monitoring, displaying, and controlling the temperature of the functional body.

14. The visual puncture microwave ablation system of any of embodiments 1-12, wherein said visual puncture microwave ablation system further comprises an insulating and thermal insulating layer.

15. The visual puncture microwave ablation system of embodiment 14, wherein the insulative thermal barrier is disposed outside the needle such that the needle is in an enclosure of the insulative thermal barrier.

16. The visual puncture microwave ablation system of embodiment 15, wherein the insulating layer is provided with graduations for monitoring the depth of the puncture.

17. The visual puncture microwave ablation system of embodiment 16, wherein the scale is disposed on the needle cannula.

In one embodiment, a visual puncture microwave ablation system is provided, comprising:

the functional body is provided with a puncture needle, and the puncture needle is provided with a needle head positioned at the far end of the puncture needle and a needle tube connected with the needle head; the needle head is connected with a microwave conducting piece, and at least part of the needle head is exposed to the outside to form an ablation conducting part; the needle head is connected with the needle tube in an insulating way; and the number of the first and second groups,

an imaging illumination device disposed in the needle cannula and operable to illuminate and photograph through the distal end of the puncture needle;

wherein, the needle tube is also provided with an injection port, and the puncture needle is also internally provided with an injection channel communicated with the injection port; and the object injection channel extends towards the direction of the needle head and penetrates through the puncture needle.

In an embodiment, an accommodating cavity for accommodating the imaging illumination device is formed in the puncture needle, and an opening of the accommodating cavity is formed at the distal end of the puncture needle.

In one embodiment, the opening of the accommodating cavity is formed on the needle head; or the opening of the containing cavity is arranged on the needle tube.

In one embodiment, the accommodating cavity extends along the length direction of the puncture needle, and a gap between the imaging illumination device and the cavity wall of the accommodating cavity is used as the injection channel.

In one embodiment, a side of the functional body, which is away from the needle head, is provided with a circulating medium injection port and a circulating medium recovery port, an in-out circulating medium loop extending along the length direction of the puncture needle is arranged in the needle tube, and one side of the in-out circulating medium loop, which is away from the needle head, is communicated with the circulating medium injection port and the circulating medium recovery port; wherein, the inlet and outlet circulating medium loop is not communicated with the object injection channel.

In one embodiment, the inlet and outlet circulation medium loop is provided with a liquid inlet channel communicated with the circulation medium injection port and extending along the length direction of the puncture needle, and a liquid outlet channel communicated with the circulation medium recovery port and extending along the length direction of the puncture needle, and the liquid inlet channel is communicated with the liquid outlet channel; wherein the liquid inlet channel, the liquid outlet channel and the opening of the needle head are not communicated.

In one embodiment, the visual puncture microwave ablation system further comprises: and the temperature detection device is arranged on the needle tube.

In one embodiment, the needle tube has an outer tube, a first inner tube sleeved in the outer tube, and the first inner tube has the accommodating cavity therein; the opening of the first inner tube facing the needle head is an opening of the accommodating cavity; the first inner tube and one end of the outer tube facing the needle head are connected to form a closed end;

a flow pipe is inserted between the first inner pipe and the outer pipe, and the flow pipe is separated from the first inner pipe and/or the outer pipe; one of the liquid inlet channel and the liquid outlet channel is positioned in the circulating pipe; the other one of the liquid inlet channel and the liquid outlet channel is positioned between the first inner pipe and the outer pipe and is positioned outside the circulating pipe;

the temperature detection device is connected to the flow pipe or the outer pipe.

In one embodiment, when the temperature detecting device is connected to the flow tube, the temperature detecting device has a pair of temperature measuring wires connected to the flow tube, and the flow tube has a pair of spaced apart wire contacts, and the pair of temperature measuring wires are respectively connected to the pair of wire contacts.

In one embodiment, the temperature detection device has a sensor arranged on the flow-through tube or the outer tube.

a second inner pipe is sleeved between the first inner pipe and the outer pipe, and the second inner pipe and the outer pipe and the first inner pipe are respectively separated to form two communicated liquid conveying areas; one of the two liquid feeding areas is the liquid inlet channel, and the other one is the liquid outlet channel;

the temperature detection device is connected to the second inner tube or the outer tube.

In one embodiment, when the temperature detection device is connected to the second inner tube, the temperature detection device has a pair of temperature measurement wires connected to the second inner tube, and the second inner tube has a pair of spaced apart wire contacts, and the pair of temperature measurement wires are respectively connected to the pair of wire contacts.

In one embodiment, the temperature detection device has a sensor disposed on the second inner tube or the outer tube.

In one embodiment, the needle is connected to the outer tube and the first inner tube; and the needle seals one end of the first inner tube and the outer tube facing the needle.

In one embodiment, the imaging and illuminating device is provided with a lens and a light guide fiber, and one end of the lens and/or the light guide fiber is/are operably arranged at the opening of the accommodating cavity.

In one embodiment, the imaging illumination device is fixedly arranged in the functional body.

In one embodiment, the system further comprises a light source coupled to the optical fiber.

In an embodiment, the functional body further has a handle disposed on a side of the needle tube away from the needle, the light source is disposed in the handle, and the light source and the handle are integrated.

In one embodiment, the system further comprises an adapter electrically connected to the lens and the light source, the adapter having an image conducting connector thereon, the adapter being fixed relative to the handle.

In one embodiment, the system further comprises an adapter connected to the imaging illumination device, the adapter having an image conducting connector and a light source coupling connector for externally connecting a light source.

In one embodiment, the imaging illumination device is movably disposed within the needle cannula along the length of the needle.

In one embodiment, the visible puncture microwave ablation system further comprises a light source converter connected with the light guide fiber, and the light source converter is movably connected with the functional body.

In one embodiment, the functional body further comprises a handle arranged on the side of the needle tube far away from the needle head, and the light source converter is arranged outside the handle and connected with the handle through a length shifter.

In an embodiment, the system further comprises an adapter electrically connected to the light source converter; the adapter has image conductive contacts thereon.

In one embodiment, the system further comprises an adapter electrically connected with the imaging illumination device, the adapter is provided with an image conduction connector and a light source coupling connector, the light source coupling connector is used for externally connecting a light source, and the adapter is connected with the functional body through a length shifter.

In one embodiment, the lens is an optical lens or an electronic lens.

In an embodiment, the functional body further comprises an insulating layer arranged outside the needle tube, and scales are further arranged on the insulating layer.

In one embodiment, the outer wall of the needle tube is also provided with scales.

Compared with the prior art, the embodiment of the invention has the advantages that the imaging and illuminating device is arranged, and the imaging and illuminating device can illuminate and shoot through the far end of the puncture needle, when the puncture needle punctures, the cavity wall of the liquid expandable tissue is injected into the injection channel through the injection port, and the interferent at the periphery of the needle head is cleaned, so that the imaging and illuminating device can clearly shoot the periphery of the needle head, and the puncture needle can be accurately positioned to a focus. After the microwave conducting piece conducts electricity, the ablation conducting part on the needle head acts on the tissue with high-frequency electromagnetic waves of microwaves, the acted tissue absorbs a large amount of microwaves, polar molecules in the tissue move at high speed under the action of a microwave field and rub with each other to generate heat, the temperature in the lesion tissue is rapidly increased, and when the temperature is increased to about 60 ℃, cell proteins are denatured and solidified to cause irreversible necrosis. In the treatment process, the imaging and illuminating device monitors the lesion removal condition in a real-time direct-view manner, and the purpose of treatment is achieved in the shortest time and with the smallest wound, so that the patient can be treated more safely and efficiently, and the pain of the patient is reduced.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a schematic structural view of a visual puncture microwave ablation system in accordance with a first embodiment of the present invention;

FIG. 2 is an enlarged partial view of the distal end of the visual puncture microwave ablation system in accordance with the first embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure of a lens and a light guide fiber of an imaging and lighting device according to a first embodiment of the present invention;

FIG. 4 is a cross-sectional view of the functional body of FIG. 1;

FIG. 5 is a cross-sectional distal view of a visual puncture microwave ablation system in accordance with a first embodiment of the present invention;

FIG. 6 is a perspective view of the distal end of a visual puncture microwave ablation system in accordance with a first embodiment of the invention;

FIG. 7 is a sectional view of a handle region of a visual puncture microwave ablation system in accordance with a first embodiment of the present invention;

FIG. 8 is a sectional view of a handle region of another visual piercing microwave ablation system in accordance with a first embodiment of the present invention;

FIG. 9 is a cross-sectional distal view of another visual piercing microwave ablation system in accordance with a first embodiment of the present invention;

FIG. 10 is a sectional view of a handle area of yet another visual piercing microwave ablation system in accordance with a first embodiment of the present invention;

FIG. 11 is a schematic structural view of another visual piercing microwave ablation system in accordance with the first embodiment of the present invention;

FIG. 12 is a schematic diagram of the use of the visual puncture microwave ablation system of FIG. 11;

FIG. 13 is a schematic structural view of a visual puncture microwave ablation system in accordance with a second embodiment of the present invention;

fig. 14 is an exploded view of a visual piercing microwave ablation system in accordance with a second embodiment of the present invention;

FIG. 15 is a cross-sectional view of a light source converter according to a second embodiment of the present invention;

fig. 16 is a schematic structural view of another visual piercing microwave ablation system in accordance with a second embodiment of the invention.

Fig. 17 is a block diagram of a conventional microwave ablation system evolving into the visual puncture microwave ablation system of the present invention.

Fig. 18 is a schematic diagram of a contoured configuration of a visual piercing microwave ablation system of the present invention.

Fig. 19 is an ultrasonic image (fig. 19A) and a direct-view image (fig. 19B) obtained when the visible microwave ablation system for puncture is used for performing a puncture experiment on an ex-vivo pig kidney, wherein an arrow indicates a needle body position.

Fig. 20 is an ultrasound image of a puncture experiment performed on an ex vivo pig kidney under ultrasound guidance using a conventional microwave ablation needle, where the arrow indicates the needle body position.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

Compared with the conventional microwave ablation system, the visual puncture microwave ablation system can image tissues (such as nerves, blood vessels, tendons and the like) around the functional body through the imaging and illuminating device positioned in the functional body when the puncture and ablation functions of the functional body are performed, and conduct the formed images or video signals back to the external display system in real time to assist in puncture and microwave ablation.

The functional body is a part for performing puncture and microwave ablation on tissues in the visible puncture microwave ablation system. The functional body and the imaging and lighting device can be in a whole or not, and together form the executive body. The effector thus has the function of performing puncture, microwave ablation and imaging illumination of the tissue.

The "infusion lumen" is a cavity inside the functional body, through which not only can a medical solution or other liquids needed by body tissues in diagnosis and treatment, such as physiological saline and the like, be infused from the outside, but also other instruments needed by surgery, such as laser fibers, guide wires, biopsy forceps, baskets and the like, can be placed into the infusion lumen and reach a target tissue site. Thus, when the needle tip of the functional body reaches the target tissue site, a liquid (such as physiological saline) can be injected to wash the target tissue site for clear imaging, or a medicine can be applied to the target tissue site or biopsy sampling treatment can be performed. The proximal needle end of the imaging illumination device is juxtaposed (separated) from the injection cavity or the proximal needle end of the imaging illumination device is contained in the injection cavity, preferably the proximal needle end of the imaging illumination device is contained in the injection cavity.

The functional body is internally provided with a microwave ablation cooling cavity which is internally closed in a circulating way. The 'internal circulation closed' means that the microwave ablation cooling cavity is not communicated with other cavities in the functional body, such as an injection cavity, so that cooling liquid in the microwave ablation cooling cavity cannot be contacted with tissues. The cooling liquid can be water or other cooling liquids, the cooling liquid can be communicated with an external cooling circulation system, and therefore the cooling of the functional body is accelerated during microwave ablation. The shape and size of the microwave ablation cooling cavity are not particularly limited as long as the cooling of the functional body can be realized.

The imaging illumination device includes a lens, which may be an optical lens or an electronic lens (as described in fig. 2 and 4), and an illumination device that partially or completely surrounds the lens.

Fig. 18 is a block diagram of a conventional microwave ablation system evolving into the visual puncture microwave ablation system of the present invention. The cross section of the functional body of the conventional microwave ablation needle is 17-1 (shown by a shaded part). The inventor of the application thinks that a cavity (B white part) is arranged on a functional body part, the function (including puncture, microwave ablation, temperature control, liquid circulation cooling, insulation and the like) of a traditional microwave ablation needle is executed by using the remaining part (A shadow part), an imaging illumination device (C black part) can be placed in the cavity part, the remaining part (B white part) can be used as an injection cavity and a microwave ablation cooling cavity, and the microwave ablation cooling cavity can be partially or completely arranged in the A shadow part and can be partially or completely arranged in the space of the B white injection cavity. Wherein the injection cavity and the microwave ablation cooling cavity are not communicated. The functional body of the present application can also be other evolved special-shaped structures, such as an oval shape, a gourd-shaped structure, etc. (as shown in fig. 18, all the hatched parts a in fig. 18, a, B, C, d represent the functional body, the white parts B represent the injection cavity, and the black parts C represent the imaging and lighting device). The evolution of the special-shaped structure is only used for illustrating the embodiment and does not limit the shapes and the combination forms of the functional body, the imaging illumination device and the injection cavity of the visible puncture microwave ablation system.

A first embodiment of the present invention and a visual puncture microwave ablation system 100, as shown in fig. 1, 2, 3, 4, 5, 6, and 7, includes: a functional body 1 and an imaging illumination device 12. The functional body 1 has a puncture needle 11, the puncture needle 11 having a needle tip 112 at a distal end thereof, and a needle tube 113 connected to the needle tip 112, the needle tip 112 being insulated from the needle tube 113. The needle 112 is connected with the microwave conductor 141, and the needle 112 is at least partially exposed to form an ablation conducting part 1130. An imaging illumination device 12 is disposed in the needle cannula 113 and is operable to illuminate and photograph through the distal end of the puncture needle 11. The needle tube 113 is further provided with an injection port 131, the puncture needle 11 is further provided with an injection channel 13 communicated with the injection port 131, and the injection channel 13 extends towards the needle head 112 and penetrates through the puncture needle 11.

Specifically, as shown in fig. 1 to 7, when the visible puncture microwave ablation system is used, the puncture needle 11 is inserted into a human body, water flow is injected from the injection port 131, the injection channel 13 penetrates through the puncture needle 11, the water flow flows out from the needle head 112 of the puncture needle 11 and expands to the periphery, a cavity is formed at the periphery where the needle head 112 of the puncture needle 11 is located, and the imaging and illuminating device 12 can clearly shoot the specific position of the needle head 112 of the puncture needle 11, so that the peripheral tissue condition is shot. And the water flow can also wash the blood around the needle head 112 of the puncture needle 11, so that the imaging and illuminating device 12 can clearly shoot the image. The injection port 131 can also be filled with medical liquid or other liquids required by body tissues during treatment, and other instruments required by operations, such as laser fibers, guide wires, biopsy forceps and other biopsy treatment instruments, can also be placed in the injection port.

As can be seen from the above, since the imaging illumination device 12 is disposed in the needle tube 113, and the imaging illumination device 12 can illuminate and shoot through the distal end of the puncture needle 11, when the puncture needle 11 punctures, the cavity wall of the liquid expandable tissue is injected into the injection channel 13 through the injection port 131, and the interferent around the needle 112 is cleaned, so that the imaging illumination device 12 can clearly shoot the situation around the needle 112, and the puncture needle 11 can be accurately positioned to the focus. After the microwave conductor 141 conducts electricity, the ablation conducting part 1130 on the needle head acts the high-frequency electromagnetic wave of the microwave on the tissue, so that the acted tissue absorbs a large amount of microwave, polar molecules in the tissue move at high speed under the action of a microwave field and rub against each other to generate heat, the temperature in the lesion tissue is rapidly increased, and when the temperature is increased to about 60 ℃, cell protein is denatured and solidified, and irreversible necrosis is caused. In the treatment process, the imaging and illuminating device 12 monitors the lesion removal condition in a real-time direct-view manner, and the purpose of treatment is achieved in the shortest time and with the smallest trauma, so that the patient can be treated more safely and efficiently, and the pain of the patient is reduced.

Implementation details of the present embodiment are specifically described below, and the following description is only provided for facilitating understanding of the implementation details and is not necessary for implementing the present embodiment.

Further, as shown in fig. 2, 3 and 5, a cavity for accommodating the imaging illumination device 12 is formed in the needle tube 113, and the distal end of the puncture needle 11 is opened with an opening 140 of the cavity. The opening 140 may be formed at the needle tip 112, and the imaging illuminator 12 may photograph the periphery of the needle tip 112 of the puncture needle 11 through the opening 140. It will be appreciated that in other embodiments, the distal end of the needle 11 may also be transparent.

Preferably, as shown in FIG. 5, the opening 140 of the receiving cavity is formed in the needle 112 so that the imaging illumination device 12 can be photographed with a more precise orientation. And in other embodiments, the opening 140 of the receiving cavity may also be formed in the needle tube 113.

Further, as shown in fig. 4, 5 and 7, the accommodating chamber extends along the length direction of the puncture needle 11, and the gap between the imaging illumination device 12 and the chamber wall of the accommodating chamber serves as an injection passage 13. The gap between the imaging illuminator 12 and the wall of the containment chamber may be formed by the imaging illuminator 12 being spaced from the wall of the containment chamber. The object injecting channel 13 naturally formed between the imaging illumination device and the cavity wall of the accommodating cavity is positioned in the accommodating cavity, so that a new space is not required to be opened up to form the object injecting channel 13, the space in the puncture needle 11 is fully utilized, the diameter of the puncture needle 11 can be smaller, and the visual puncture microwave ablation system can be more precise. It is understood that in other embodiments, the injection channel 13 may be disposed outside the accommodating cavity, and the injection port 131 of the injection channel 13 may or may not be in communication with the accommodating cavity.

Further, as shown in fig. 4, 5 and 7, a circulation medium inlet 151 and a circulation medium recovery port 161 are disposed on a side of the functional body 1 away from the needle 112, an in-out circulation medium loop 65 extending along a length direction of the puncture needle 11 is disposed in the puncture needle 11, the in-out circulation medium loop 65 extends to a position close to the needle 112, a side of the in-out circulation medium loop 65 away from the needle 112 communicates with the circulation medium inlet 151 and the circulation medium recovery port 161, and the in-out circulation medium loop 65 is not communicated with the injection channel 13. The circulating medium in and out of the circulating medium loop 65 may be water or other liquid to cool the functional body.

In practice, the visible piercing microwave ablation system is externally connected to a cooling water circulation system 102 as shown in fig. 12, and the cooling water circulation system 102 circulates water into and out of the circulation medium circuit 65.

Further, as shown in fig. 4, 5 and 7, the inlet/outlet circulation medium circuit 65 has a liquid inlet passage 15 communicating with the circulation medium inlet 151 and extending in the longitudinal direction of the puncture needle 11, and a liquid outlet passage 16 communicating with the circulation medium recovery port 161 and extending in the longitudinal direction of the puncture needle 11, and the liquid inlet passage 15 communicates with the liquid outlet passage 16. The liquid inlet channel 15 and the liquid outlet channel 16 are not communicated with the opening of the needle 112, and cooling water is discharged through the puncture needle 11 through the liquid inlet channel 15 and the liquid outlet channel 16. Alternatively, as shown in fig. 5, the liquid outlet channel 16 is arranged around the periphery of the accommodating cavity. In other embodiments, the liquid outlet channel can also be arranged without surrounding the accommodating cavity.

Further, the visual puncture microwave ablation system further comprises: and a temperature detection device arranged on the functional body.

Further, as shown in fig. 4, 5 and 7, the needle tube 113 has an outer tube 1131, and a first inner tube 1132 sleeved inside the outer tube 1131, and the first inner tube 1132 has a containing cavity therein, and an opening of the first inner tube 1132 facing the needle 112 is an opening 140 of the containing cavity. The ends of the inner and

outer tubes

1132, 1131 facing the needle 112 are closed ends, and the area inside the inner tube 1132 is not communicated with the area between the inner and

outer tubes

1132, 1131, so as to directly seal the ends of the inner and

outer tubes

1132, 1131 facing the needle 112 when the needle cannula 113 is prepared. A flow tube 150 is inserted between the first inner tube 1132 and the outer tube 1131, the flow tube 150 is spaced apart from the first inner tube 1132 and the outer tube 1131, and the flow tube 150 is open towards one end of the needle and away from the closed end. The liquid inlet channel 15 is located in the flow pipe 150, and the liquid outlet channel 16 is located between the first inner pipe 1132 and the outer pipe 1131. The circulating water flows into the space between the flow pipe 150 and the first inner pipe 1132 and the outer pipe 1131 from the flow pipe 150, and then flows out. The temperature detection means is connected to the flow pipe 150.

It is understood that in other embodiments, the flow-through pipe 150 may be spaced apart from one of the first inner pipe 1132 and the outer pipe 1131 to allow circulating water to pass through.

In various embodiments, the liquid outlet channel 16 may be in the flow pipe 150, and the area between the first inner pipe 1132 and the outer pipe 1131 outside the flow pipe 150 is the liquid inlet channel 15.

As shown in fig. 4, 5 and 7, the temperature detecting device has a pair of

temperature measuring wires

143, 144 connected to the flow tube 150, the flow tube 150 has a pair of

wire contacts

145, 146, the pair of

temperature measuring wires

143, 144 are connected to the pair of

wire contacts

145, 146 respectively, the wire contact 146 at the far end of the flow tube 150 is connected to one temperature measuring wire 144, the wire contact 145 at the near end of the flow tube 150 is connected to one temperature measuring wire 143 to form a closed loop, when the visible puncture microwave ablation system works, the temperature of the flow tube 150 is influenced to change, and when there is a temperature difference between the temperature measuring wire and the flow tube 150, an electromotive force is formed between the two, so that a current is formed in the loop, and the current is led out to the microwave ablation host 107 through the wires to complete the transmission of electrical signals, thereby realizing the temperature regulation control. It is understood that the temperature detection means may be of other configurations available in the art in other embodiments. In addition, in various embodiments, the wire contact point for connecting a pair of temperature measuring wires can also be on the outer tube 1131 or the first inner tube 1132.

As shown in fig. 4, 5 and 7, the temperature measuring wire 144 passes through the flow tube 150, extends from one end of the flow tube 150 toward the needle, and is connected to the wire contact 146, and circulating water flows into the space between the flow tube 150 and the first inner tube 1132 and the outer tube 1131 from the gap between the temperature measuring wire 144 and the flow tube 150, and then flows out. It is understood that in other embodiments, the temperature measuring wire 144 can be disposed between the first inner tube 1132 and the outer tube 1131, but outside the flow-through tube 150.

In other embodiments, the temperature detecting device may have other structures, such as the temperature detecting device in fig. 8 having the sensor 148 disposed on the outer tube, the sensor 148 is directly connected to the end of the outer tube 1131 away from the needle, and the lead 149 on the sensor 148 is connected to the outside. The sensor 148 may also be connected to a flow tube 150.

In addition, in some embodiments, as shown in fig. 9 and 10, the flow tube 150 may not be disposed in the accommodating cavity, but a second inner tube 1133 is sleeved between the first inner tube 1132 and the outer tube 1131, and the second inner tube 1133 forms two liquid passing areas that are communicated with the outer tube 1131 and the first inner tube 1132 at intervals. One of the two liquid-feeding areas is a liquid inlet channel, and the other is a liquid outlet channel. The temperature detecting device has a pair of

temperature measuring wires

143, 144 connected to the second inner tube 1133, and the second inner tube 1133 has a pair of spaced apart

wire contacts

145, 146, and the pair of

temperature measuring wires

143, 144 are connected to the pair of

wire contacts

145, 146, respectively. In various embodiments, a pair of temperature sensing wires can be connected to the first inner or outer tube. In other embodiments, the temperature detecting device may have other structures, such as a sensor 148 disposed on the second inner tube 1133, the sensor 148 is directly connected to the end of the second inner tube 1133 away from the needle, and the lead 149 on the sensor is connected to the outside. It is understood that, in another embodiment, the first inner pipe 1132, the second inner pipe 1133, the outer pipe 1131 and the flow pipe 150 may be present at the same time, the flow pipe 150 is disposed between the first inner pipe 1132 and the second inner pipe 1133, a gap is present between the flow pipe 150 and the first inner pipe 1132 and the second inner pipe 1133, the flow pipe 150 and the gap form an inlet and outlet circulation medium loop, and the circulation water may flow between the flow pipe 150 and the gap. The connection of the pair of temperature measuring wires can be selected among the first inner tube 1132, the second inner tube 1133, the outer tube 1131 and the flow tube 150, but is not limited thereto. In actual use, the configuration of the circulating medium circuit is also various.

In addition, as shown in fig. 5 and 9, the needle 112 is connected to the outer tube 1131 and the first inner tube 1132. Alternatively, the first inner tube 1132 is connected to the outer tube 1131 around the opening of the needle 112 by a seal 1134, and the needle 112 is connected to the seal 1134. The sealing member 1134 is formed by bending and extending the tube body of the first inner tube 1132 to connect with the outer tube 1131. In some embodiments, the seal 1134, the first inner tube 1132, and the outer tube 1131 may be a unitary piece.

Further, the needle 112 is in streamline smooth transition with the outer wall of the outer tube 1131, so that the puncture needle can penetrate into the human body more easily.

In addition, the needle 112 is made of medical stainless steel material and can conduct electricity. The tail end of the needle 112 is an insulating part, i.e. the part of the needle 112 connected with the needle tube 113 is made of insulating material, i.e. the tail end of the needle 112 is coated with a layer or filled with polymer material, and the tail end of the needle 112 is connected with the needle tube 113 by special glue. The tail end of the needle 112 can be embedded and adhered on the needle tube 113, and the needle 112 and the needle tube 113 are smoothly transited. Or the part of the needle tube 113 connected with the needle 112 may be directly made into an insulating part, and the part of the needle tube 113 connected with the needle 112 may be coated with a coating or filled with a polymer material. As shown in fig. 5 and 6, the microwave conductor 141 is welded to the conductive region of the needle 112, and may not affect the needle tube 113 during operation. The wires 142 of the microwave conductor 141 extend from the outer tube 1131 to the outside of the needle tube 113, and the wires 142 of the microwave conductor 141 may also extend from the first inner tube 1132 to the outside of the needle tube 113.

Further, the functional body further comprises an insulating layer arranged outside the needle tube 113.

Optionally, as shown in fig. 2, the insulating layer 19 may be an insulating sleeve 19 that can be sleeved on the outer tube 1131, or may be a coating layer coated on the outer tube 1131.

As shown in fig. 1 and 2, the insulating layer 19 is further provided with a scale 20. The depth of penetration of the puncture needle 11 can be observed by means of the scale 20.

In some embodiments, the needle tube 113 may not have the insulating layer 19, and the outer wall of the needle tube 113 may also have a scale.

Further, as shown in fig. 4, 5, and 7, the functional body 1 is connected to an injection pipe 152 connected to the liquid inlet passage 15, and the circulation medium injection port 151 is provided in the injection pipe 152. The functional body 1 is connected with a recovery pipe 162 connected to the liquid outlet passage 16, and a circulating medium recovery port 161 is provided in the recovery pipe 162. A puncture injection tube 132 is further provided on the functional body 1, the puncture injection tube 132 is connected to the injection channel 13, and the injection port 131 is opened on the puncture injection tube 132. Specifically, the functional body 1 further includes a handle 18 connected to the puncture needle 11, the proximal end of the puncture needle 11 is inserted into the handle 18, and the injection tube 152, the recovery tube 162, and the puncture injection tube 132 are disposed on the handle 18. The cooling water circulation system 102 is interfaced with the recovery pipe 162 and the injection pipe 152. It can be understood that the circulating medium inlet 151, the circulating medium recovery port 161, and the injection port 131 may be formed directly in the needle tube 113 or in the handle 18.

In addition, as shown in fig. 3, the imaging and illuminating device 12 has a lens 121 and a light guide fiber 122. The lens 121 may be an electronic lens 121, such as a CMOS/CCD lens 121, and the lens 121 may also be an optical lens 121.

Further, as shown in fig. 1, the imaging illumination device 12 is fixedly connected to the functional body 1.

In addition, as shown in fig. 2 and 5, the lens 121 and one end of the optical fiber 122 are disposed at the opening 140 of the receiving cavity. In other embodiments, one of the lens 121 and the optical fiber 122 may be at the opening, and the other one is in the accommodating cavity and is at a distance from the opening 140 of the accommodating cavity, but the optical fiber 122 may also polish the lens 121.

Preferably, as shown in fig. 3, the light guide fiber 122 is disposed around the lens 121. It is understood that in other embodiments, the light guide fiber 122 may be located in a partial region of the sidewall of the lens 121.

Further, as shown in fig. 5, the imaging illumination device 12 is fixedly provided in the functional body 1.

Further, the visible microwave ablation system has a light source 50 connected to the light guide fiber 122, and the light source 50 may be a different light source such as an LED lamp.

Further, as shown in fig. 7, the functional body 1 further has a handle 18 disposed on a side of the needle tube 113 away from the needle 112, the light source 50 is disposed in the handle 18, and the light source 50 and the handle 18 are a single piece. The optical fiber 122 may be affixed to the handle 18, with the optical fiber 122 extending proximally of the functional body to be connected to the light source 50. As shown in fig. 5, a cable 123 is connected to the lens 121 and extends out of the handle 18. It is understood that in other embodiments, the light source 50 can be disposed outside the handle 18, the light source 50 is installed in a light source converter fixed to the handle 18, and the light guide fiber 122 is connected to the light source 50, in which case the imaging and illuminating device 12 is also fixed in the accommodating cavity and immovable, and the imaging and illuminating device 12, the light source 50, and the functional body 1 form a single piece.

Further, as shown in fig. 1 and 7, the visible microwave ablation system further comprises an adapter 17 electrically connected to the lens 121 and the light source 50, the adapter 17 has an image conducting connector 171, and the adapter 17 is fixed relative to the handle 18. The image conduction connector 171 is externally connected with a camera, and the camera is connected with an endoscope monitor.

Specifically, as shown in fig. 1 and 7, an extension cable 170 is connected to the adaptor 17, and one end of the extension cable 170 is connected to the connector interface 181 of the handle 18, and can be screwed or clamped to the handle 18 through a connector. The light source 50 and the lens 121 are electrically connected to the extension cable 170. That is, the light source 50, the imaging illumination device 12, and the functional body 1 form an integral piece, and the distance between the imaging illumination device 12 and the opening 140 of the housing cavity is not adjustable. Wherein the adapter 17 can be detached from the functional body 1, and after the visual puncture microwave ablation system is used, the adapter 17 is detached and used on other functional bodies. Of course, the adapter 17 can also be integrated with the functional body, and after the visual puncture microwave ablation system is used, the adapter 17 is disposed of together with the functional body 1. A connecting wire 147 also extends from the handle 18, and the cable for connecting microwave conduction and the

temperature measuring wires

143 and 144 can be gathered together and are docked to the microwave ablation host 107 through the connecting wire 147.

It is appreciated that in other embodiments, the light source 50 may be absent from the visible piercing microwave ablation system 200, and the adapter 27 of the visible piercing microwave ablation system is different from the adapter 17 of the visible piercing microwave ablation system having the light source 50. Specifically, as shown in fig. 11 and 12, in the visible puncture microwave ablation system 200 without light source, the adapter 27 connected to the functional body 1 has an image conducting connector 271 and a light source coupling connector 272, the image conducting connector 271 is externally connected to a camera, the camera is connected to an endoscope monitor, the image shot by the lens 121 can be observed, and the light source coupling connector 272 is connected to an externally connected light source, i.e., the light source system 108, so that the light of the light guide fiber 122 is emitted. The adapter 27 is connected to the functional body 1 by an extension cable 170, which is the same structure as the visible piercing microwave ablation system with a light source.

Taking the application of the visible puncturing microwave ablation system 200 as an example, as shown in fig. 12, when the visible puncturing microwave ablation system 200 is used, the ultrasonic monitoring device 101 indirectly displays the path along which the ablation device needs to walk outside the human body, the circulating medium injection port 151 and the circulating medium recovery port 161 are connected to the cooling water circulation system 102, the injection port 131 is connected to the injector 103, and the image conducting connector 271 is connected to the camera monitoring device 104 to display the position of the needle 112. The microwave conductor 141 is connected with the microwave ablation host 107. The applicator 1 is inserted into the tissue 105, the needle 112 is inserted over the lesion 106, and the ablation guide 1130 on the needle 113 also works on the area to be removed within the lesion. It should be appreciated that in different embodiments of the visually punctured microwave ablation system, the components external to the visually punctured microwave ablation system may be changed accordingly, depending on the configuration of the visually punctured microwave ablation system. In addition, the ultrasonic monitoring device 101 may be replaced with another monitoring device such as an X-ray device. In addition, the visible puncture microwave ablation system 100 is used in a similar manner, and can be docked with external components as required.

It can be understood that the structure of the visible puncture microwave ablation system is different in different embodiments, and only one or both of the circulating medium loop and the temperature detection device can be provided in some embodiments, so that the visible puncture microwave ablation system in different embodiments can be selectively used according to the use requirement.

In the present embodiment, as shown in fig. 13 and 14, an imaging illumination device 12 is movably disposed in the needle tube 113 along the length direction of the puncture needle 11. Thus, as can be seen in fig. 3, the distance between the lens 121 and the light-guiding fiber 122 and the opening 140 of the accommodating cavity can be adjusted in the visual puncture microwave ablation system 400.

Further, as shown in fig. 13, 14 and 15, the visual puncture microwave ablation system 400 further has a light source converter 45 connected to the light-guiding fiber 122, and the light source converter 45 is movably connected to the functional body 1. The light source converter 45 is provided with a light source 450, the light guide fiber 122 is connected to the light source 450, and the cable of the lens 121 is electrically connected with the cable 451 in the light source converter 45. That is, the light source converter 45 and the imaging illumination device 12 are integrally connected, and the imaging illumination device 12 is moved in the longitudinal direction of the puncture needle 11 by pulling the light source converter 45.

Further, as shown in fig. 13 and 14, the functional body 1 further has a handle 18 disposed on the side of the needle tube 113 away from the needle 112, and the light source converter 45 is disposed outside the handle 18 and connected to the handle 18 through the length shifter 46. One end of the length shifter 46 is connected to the interface 181 of the handle 18, and can be screwed or clamped, the light source converter 45 is connected to the movable end of the length shifter 46, and the length shifter 46 is fixed by the locking screw 461 after the lens 121 and the light guide fiber 122 are adjusted to the proper position.

In addition, as shown in fig. 13 and 14, the system 400 further includes an adapter 17 electrically connected to the light source converter 45, and the adapter has an image conducting connector 171 thereon. The adapter 17, the light source converter 45, and the imaging illumination device 12 are integrally connected to be movable in the longitudinal direction of the puncture needle 11.

It is appreciated that in other embodiments, as shown in fig. 16, there may be no light source in the visual puncture microwave ablation system 500, and the cable connecting the lens 121 and the optical fiber 122 in the switch 55, the switch 55 being used to connect the length shifter 46. The adapter 27 of the visual puncture microwave ablation system 500 is different from the adapter 17 of the visual puncture microwave ablation system with a light source. Specifically, the system 500 further includes an adapter 27 electrically connected to the imaging illumination device 12, the adapter 27 has an image conducting connector 271 and a light source coupling connector 272, and the adapter 27 is connected to the functional body 1 through the length shifter 46. The adapter 27 is the same as the adapter configured in the first embodiment of the light-source-free visible penetration microwave ablation system, and is not described in detail herein.

Since the first embodiment corresponds to the present embodiment, the present embodiment can be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and the technical effects that can be achieved in the first embodiment can also be achieved in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

Further, in various embodiments, the structures within the needle cannula may be different and are not limited to the structures shown in the figures. The visible puncture microwave ablation system can be without temperature measurement function, namely without temperature measurement leads 143 and 144, or in other structures, without an in-out circulating medium loop, and the structure can be changed correspondingly according to different functional requirements.

Since the first embodiment and the second embodiment correspond to the present embodiment, the present embodiment can be implemented in cooperation with the first embodiment and the second embodiment. The related technical details mentioned in the first embodiment and the second embodiment are still valid in this embodiment, and the technical effects that can be achieved in the first embodiment and the second embodiment can also be achieved in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment, and the second embodiment.

Experimental example 1

The isolated pig kidney is taken, and the microwave ablation needle of the visible puncture microwave ablation system is used for implementing a puncture experiment on the isolated pig kidney. The puncture process is through ultrasonic image (fig. 19A) judgement needle insertion direction, through the direct-view image (fig. 19B) real-time supervision puncture route of formation of image lighting device transmission and needle point surrounding tissue condition, when having tissue or blood interference direct-view image in the field of vision, through annotating the thing chamber and annotating the flush fluid, keep the field of vision clear to can realize whole journey visual.

Comparative example

The in vitro pig kidney is taken, a traditional microwave ablation needle is used, a puncture experiment is carried out on the in vitro pig kidney under the guidance of ultrasound, and the puncture process only can indirectly judge the needle inserting direction and path by means of an ultrasound image (figure 20).

Comparing fig. 19 and 20, it can be seen that, compared with the method that the needle insertion direction and path can be indirectly determined only by means of the ultrasonic image, the microwave ablation needle of the present invention can see the ultrasonic image and the direct-view image simultaneously during needle insertion, which is helpful for understanding the condition of the internal fine tissue, thereby realizing more precise control of the needle insertion direction and path.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

2. The visual puncture microwave ablation system of claim 1, wherein the functional body interior further comprises a microwave ablation cooling cavity, the microwave ablation cooling cavity being closed by an internal circulation.

3. The visual puncture microwave ablation system according to any one of claims 1-2, wherein the functional body comprises a puncture needle, a needle head at the distal end of the puncture needle, and a needle tube connected to the needle head, and the imaging illumination device is disposed in the needle tube.

4. The visual puncture microwave ablation system of claim 3, wherein the proximal needle end of the imaging illumination device is juxtaposed with or contained within the injection cavity, preferably the proximal needle end of the imaging illumination device is contained within the injection cavity.

5. The visually-pierced microwave ablation system as claimed in claim 4, wherein the injection cavity comprises an injection passage located inside the needle tube, an injection port located at the distal end of the needle and located inside the needle tube and communicating with the outside, and an outlet port opening at the proximal end of the needle, and the microwave ablation cooling cavity comprises a circulating medium injection port and a circulating medium recovery port arranged at the side far away from the needle, and a circulating medium inlet and outlet loop located inside the needle.

6. The visual puncture microwave ablation system according to any one of claims 1-5, wherein the imaging illumination device comprises a lens and an illumination device, preferably the lens is an optical lens or an electronic lens, preferably the illumination device is arranged partially or completely around the lens.

7. The visual puncture microwave ablation system of claim 6, wherein the lens is longitudinally or laterally adjustable in position as viewed.

8. The visual puncture microwave ablation system of claim 6 or 7, wherein the visual puncture microwave ablation system further comprises an illumination source disposed at the needle end or the distal needle end, the distal needle end light source being transmitted illumination to the needle end by the light conducting assembly.

9. The visual puncture microwave ablation system of claim 8, wherein the functional body further has a handle disposed on a side of the needle cannula distal from the needle, the light source is disposed within the handle, and the light source is integral with the handle.

10. The system of claim 9, wherein the system further comprises an adapter electrically connected to the lens and the light source, the adapter having an image conducting connector thereon, the adapter being fixed relative to the handle.

11. The system according to any one of claims 5-10, wherein the object that can be injected into the injection cavity through the injection port comprises a medical fluid or other fluid needed by the body tissue for diagnosis and treatment, or other instruments needed for surgery, such as a laser fiber, a guide wire, a biopsy forceps, a basket, etc.

12. The system according to any one of claims 5-10, wherein the circulating medium in and out of said circulating medium circuit is water or other liquid for cooling.

13. The visual puncture microwave ablation system according to any one of claims 1-12, wherein the visual puncture microwave ablation system further comprises a temperature control device for monitoring, displaying and controlling the temperature of the functional body.

14. The visual puncture microwave ablation system according to any one of claims 1-12, wherein the visual puncture microwave ablation system further comprises an insulating thermal barrier layer.

15. The visual puncture microwave ablation system of claim 14, wherein the insulative thermal barrier is disposed outside the needle such that the needle is in an enclosure of the insulative thermal barrier.

16. The visual puncture microwave ablation system of claim 15, wherein the insulating layer is graduated for monitoring the depth of puncture.

17. The visual piercing microwave ablation system of claim 16, wherein the graduations are disposed on the needle cannula.