CN114469275A

CN114469275A - Visual puncture radio frequency ablation system

Info

Publication number: CN114469275A
Application number: CN202210053282.6A
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 radiofrequency ablation system, including the radiofrequency generator, with the function body that the radiofrequency generator is connected, and imaging lighting device, the function body has puncture of tissue, radiofrequency ablation function, imaging lighting device throws light on and images and returns external display system with forming image or video signal real-time conduction back in order to assist puncture and radiofrequency ablation in the puncture that the function body carried out the tissue and treatment process, wherein imaging lighting device is located completely or partially 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 visual puncture radio frequency ablation system realizes the whole process of visualization in the puncture, diagnosis and treatment processes, and accurately finishes the treatment purpose in the shortest time and with the smallest trauma, thereby reducing the pain of patients.

Description

Visual puncture radio frequency ablation system

Technical Field

The invention relates to medical equipment, in particular to a visual puncture radio frequency ablation system.

Background

At present, in minimally invasive surgery, the basic surgical procedure using a conventional radiofrequency ablation needle is as follows: the radio frequency ablation needle is inserted into a human body under the guidance of ultrasound or X-ray, and then treatment is carried out by electrifying and heating. In the above-described procedure, when puncturing is performed with a puncture needle, it is generally performed under an indirect image by an auxiliary guide such as an ultrasonic probe or X-ray. However, due to the indirect image observation feature, 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 radio frequency melting needle cannot directly look at a puncture path due to the fact that the traditional radio frequency melting needle does not have a visual function, so that tissue or blood vessels are often damaged, and pain is brought to a patient. Meanwhile, real-time monitoring of the treatment process and treatment condition evaluation cannot be realized.

CN202022408992.5 discloses a visual radio frequency pjncture needle, and it includes pjncture needle body, is equipped with the miniature camera head that is used for shooing local organizational structure at the needle point of pjncture needle body, is equipped with the ablation electrode that is used for reducing or deactivation trigger point in the needle point department of pjncture needle body. However, the ablation electrode is positioned in front of the micro camera to affect the visual field of the camera, in the using process, the micro camera is difficult to shoot tissues contacted with the ablation electrode, the tip of the structure adopts a transparent and closed structure, the space at the front end of the needle point is forcibly created without middle, non-transparent media such as tissues, blood and the like can be passively attached to the needle tip, the transparent structure of the needle tip cannot actively eliminate the attachment no matter what material or what coating is used, the actual puncture process cannot be seen all the way, puncture injury is easily caused, and on the other hand, the structure only has a single treatment function of radiofrequency ablation.

Disclosure of Invention

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

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

1. the utility model provides a visual puncture radio frequency ablation system, includes the radio frequency generator, with the function body that the radio frequency generator is connected, and imaging lighting device, the function body has the puncture of tissue, and the radio frequency melts the function, imaging lighting device carries out the illumination and the formation of image of tissue and conducts in real time the external display system with become image or video signal back in order to assist puncture and radio frequency to melt at the puncture in-process that the function body carries out the tissue, wherein imaging lighting device is located wholly or partly in the function body, wherein the function body is inside still to include annotates the thing chamber, it is open to the tissue to annotate the thing chamber.

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

3. The visual puncture radio frequency 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 radio frequency ablation system of embodiment 3, wherein the proximal needle end of the imaging illumination device is juxtaposed with or contained within the infusion lumen, preferably the proximal needle end of the imaging illumination device is contained within the infusion lumen.

5. The visual puncture radio frequency ablation system of embodiment 4, wherein the injection cavity comprises an injection channel inside the needle tube, an injection port at the distal end of the needle and inside the needle tube and communicating with the outside, and an outlet port opening at the proximal end of the needle, and the radio frequency ablation cooling cavity comprises a circulating medium injection port and a circulating medium recovery port arranged at one side far away from the needle, and a circulating medium inlet and outlet loop inside the needle.

6. The visual puncture radio frequency 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 radio frequency ablation system of claim 6, wherein the lens is adjustable in position longitudinally or laterally according to viewing needs.

8. The visual puncture radio frequency ablation system of embodiment 6 or 7, wherein the visual puncture radio frequency 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 rf ablation system of embodiment 8, wherein the functional body further comprises 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 and the handle are one piece.

10. The visual puncture radio frequency ablation system of embodiment 9, wherein said visual puncture radio frequency ablation system further comprises an adapter electrically connected to said lens and said light source, said adapter having an image conducting connection thereon, said adapter being fixed relative to said 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 radio frequency ablation system of any of embodiments 5-10, wherein the circulating medium in and out of said circulating medium loop is water or other liquid for cooling.

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

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

15. The visually penetrating radio frequency ablation system of embodiment 14, wherein the insulating layer is disposed outside the needle such that the needle is in the enclosure of the insulating layer.

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

17. The visually penetrating radio frequency ablation system of embodiment 16, wherein the scale is disposed on the needle cannula.

In one embodiment, a visual puncture radio frequency 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 puncture needle is internally provided with at least one contact electrode connected with the puncture needle, and one end of the needle tube and one end of the needle head are at least partially exposed to the outside to form an ablation conducting part; 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 injection channel extends towards the direction of the needle head and extends to penetrate through the puncture needle.

In one embodiment, a containing cavity for containing the imaging illumination device is formed in the needle tube, and the distal end of the puncture needle is provided with an opening of the containing cavity.

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, the visual puncture rf ablation system further comprises: and the temperature detection device is arranged on the functional body.

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 temperature detection device is provided with a pair of temperature control leads connected to the first inner tube, the first inner tube is provided with a pair of spaced and separated lead contacts, and the pair of temperature control leads are respectively connected with the pair of lead contacts;

the at least one contact electrode is connected to the inside of the outer tube.

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 puncture needle, 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 with each other.

In one embodiment, a flow pipe communicated with the first inner pipe and the outer pipe is arranged in the accommodating cavity;

one of the liquid inlet channel and the liquid outlet channel is positioned in the circulating pipe, and the other one of the liquid inlet channel and the liquid outlet channel is positioned between the first inner pipe and the outer pipe.

In one embodiment, the needle cannula further has a second inner tube disposed within the first inner tube, the receiving cavity being located in the second inner tube;

the first inner pipe is respectively separated from the outer pipe and the second inner pipe to form two communicated liquid running areas; one of the two liquid feeding areas is the liquid inlet channel, and the other is the liquid outlet channel.

In one embodiment, the needle is connected to the outer tube; or the needle is connected with the first inner tube;

or the periphery of the opening of the first inner tube facing the needle head is connected to the outer tube through a sealing element, and the needle head is connected with the sealing element.

In one embodiment, the needle head and the outer wall of the outer tube form a streamline smooth transition.

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 visual puncture rf ablation system further comprises a light source connected 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 an embodiment, the visual puncture radiofrequency ablation system further comprises an adapter connected with the imaging illumination device, the adapter is provided with an image conduction connector and a light source coupling connector, and the light source coupling connector is used 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 visual puncture radiofrequency 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 one embodiment, the visual puncture rf ablation system further comprises an adapter electrically connected to the light source converter; the adapter has image conductive contacts thereon.

In one embodiment, the visual puncture radiofrequency ablation 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 one embodiment, the functional body further comprises an insulating layer arranged outside the needle tube, and one end of the insulating layer facing the needle head is separated from the needle head; the part of the needle tube between the needle head and one end of the insulating and heat-insulating layer facing the needle head is exposed outside, and the exposed part of the needle tube forms the ablation conducting part.

In one embodiment, the insulating layer is further provided with scales.

In one embodiment, the contact electrodes have two and different polarities, wherein the two contact electrodes are spaced apart.

In one embodiment, one of said contact electrodes is connected to the outer tube of said needle cannula and the other of said contact electrodes is connected to said needle; wherein the contact electrode connected to the needle is electrically insulated from the outer tube.

In one embodiment, the contact electrode is one;

the visual puncture radiofrequency ablation system further comprises a patch electrode which is arranged separately from the functional body.

In one embodiment, the visual puncture rf ablation system further includes an rf generator operatively electrically connected to the patch electrode.

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 contact electrode conducts electricity, high-frequency conversion current of an ablation conduction part on the needle tube enables ions of surrounding tissues to vibrate and rub to generate molar heat, and the focus is scorched and removed by heat. 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 radio frequency 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 radio frequency ablation system in accordance with the first embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 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. 5 is a cross-sectional view of a handle region of a visual puncture radio frequency ablation system in accordance with a first embodiment of the invention;

FIG. 6 is a cross-sectional distal view of another visual penetrating radio frequency ablation system in accordance with the first embodiment of the present invention;

FIG. 7 is a cross-sectional view of a handle region of another visual penetrating radio frequency ablation system in accordance with the first embodiment of the present invention;

FIG. 8 is a cross-sectional distal view of yet another visual penetrating radio frequency ablation system in accordance with a first embodiment of the present invention;

FIG. 9 is a schematic structural view of another visual puncture RF ablation system in accordance with the first embodiment of the present invention;

FIG. 10 is a cross-sectional view of a handle region of another visual penetrating radio frequency ablation system in accordance with the first embodiment of the present invention;

FIG. 11 is a schematic illustration of a visual puncture radio frequency ablation system in accordance with a first embodiment of the present invention;

FIG. 12 is a schematic structural view of a visual puncture RF ablation system in accordance with a second embodiment of the invention;

FIG. 13 is an exploded view of a visual puncture RF ablation system in accordance with a second embodiment of the present invention;

FIG. 14 is a cross-sectional view of a light source converter according to a second embodiment of the present invention;

fig. 15 is a schematic structural view of another visual puncture rf ablation system in accordance with a second embodiment of the invention.

FIG. 16 is a cross-sectional view of the distal end of a visual puncture radio frequency ablation system in accordance with a third embodiment of the invention;

FIG. 17 is a cross-sectional view of the handle region of a visual puncture radio frequency ablation system in accordance with a third embodiment of the invention;

FIG. 18 is a schematic structural view of a visual puncture RF ablation system in accordance with a fourth embodiment of the invention;

fig. 19 is a block diagram of the evolution of a conventional rf ablation system into the visual puncture rf ablation system of the present invention.

Fig. 20 is a schematic view of a contoured visual puncture rf ablation system of the present invention.

Fig. 21 is an ultrasonic image (fig. 21A) and a direct-view image (fig. 21B) obtained by the visual puncture rf ablation system of the present invention when performing a puncture experiment on an ex vivo pig kidney, wherein an arrow indicates a needle body position.

Fig. 22 is an ultrasound image of a puncture experiment performed on an ex vivo pig kidney under ultrasound guidance using a conventional radiofrequency 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 radio frequency ablation system, the visual puncture radio frequency 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 the puncture and the radio frequency ablation.

The functional body is a part for performing puncture and radio frequency ablation on tissues in the visual puncture radio frequency 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, radiofrequency 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 also comprises a radio frequency ablation cooling cavity inside, and the radio frequency ablation cooling cavity is internally and circularly closed. The 'internal circulation closed' means that the radio frequency ablation cooling cavity is not communicated with other cavities in the functional body, such as an injection cavity, so that cooling liquid in the radio frequency 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 radiofrequency ablation. The shape and size of the radiofrequency 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. 19 is a block diagram of the evolution of a conventional rf ablation system into the visual puncture rf ablation system of the present invention. The cross section of the functional body of the traditional radio frequency ablation needle is 19-1 (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 of the traditional radio frequency ablation needle (including puncture, radio frequency ablation, temperature control, liquid circulation cooling, insulation and the like) is executed by using the residual part (A shadow part), an imaging illumination device (C black part) can be placed in the cavity part, the residual part (B white part) can be used as an injection cavity and a radio frequency ablation cooling cavity, and the radio frequency 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 radiofrequency 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. 20, all the hatched parts a in fig. 20, 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 visual puncture radio frequency ablation system.

A first embodiment of the present invention and a visual puncture rf ablation system 100, as shown in fig. 1, 2, 3, 4 and 5, 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 puncture needle 11 has a contact electrode 141 connected thereto, and the needle tube 113 and one end of the needle tip 112 are at least partially exposed to form an ablation conducting portion 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 extends to penetrate the puncture needle 11.

Specifically, as shown in fig. 1, 3 and 5, when the visible puncture radio frequency 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 shoot clearly. The injection port 131 can also be filled with medical liquid or other liquids required by body tissues in diagnosis and treatment, and can also be filled with other instruments required by operations, such as laser fibers, guide wires, biopsy forceps, baskets and other therapeutic biopsy instruments.

When the visual puncture radiofrequency ablation system 100 is used, as shown in fig. 3, 5 and 11, the patch electrode 108 needs to be matched, the patch electrode 108 is attached to the human body and is electrically connected with the radiofrequency generator 107, and the contact electrode 141 is electrically connected to the radiofrequency generator 107 through a wiring. After the puncture needle 11 is in place, the patch electrode 108 and the contact electrode 141 are both electrified, the contact electrode 141 acts on the focus, and the conductive ions and polarized molecules in the focus change the motion direction rapidly under the action of the radio frequency alternating current, but because the volumes, the masses and the charged electric quantities of the various conductive ions are different, the inversion and the motion speed of the various conductive ions are different, and therefore frictional heat is generated between the conductive ions and the polarized molecules. The radio frequency alternating current is conducted to the ablation conducting part 1130 through the outer tube 1131 by the contact electrode 141, and the current density around the ablation conducting part 1130 is extremely high, so that a local high-temperature region is formed around the ablation conducting part 1130 to burn and remove the focus, and other regions of the needle tube 113 are non-working regions which cannot conduct the radio frequency alternating current to the human body and cannot damage the body tissue due to the temperature. When the temperature reaches above 60 ℃, proteins in the tissues are denatured, and tumor cells are irreversibly necrotic. Meanwhile, a thermotherapy area at 43-60 ℃ is arranged outside the solidification damage area, so that tumor cells in the area are killed, and normal cells can be recovered.

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 contact electrode 141 conducts electricity, the high frequency of the ablation conducting part 1130 on the needle tube 113 converts the current, so that the ions of the surrounding tissues are vibrated and rubbed to generate the molar heat, and the focus is scorched and removed by the heat. 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 provided only for the sake of understanding and is not necessary for implementing the present embodiment.

Further, as shown in fig. 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. 3, 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. 3 and 5, the accommodating chamber extends along the length direction of the puncture needle 11, and a 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 injection channel, namely the object injection channel 13 is positioned in the accommodating cavity, and the object injection channel 13 is formed without opening a new space, so that the space in the puncture needle 11 is fully utilized, the diameter of the puncture needle 11 can be smaller, and the visual puncture radio frequency 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, the visual puncture radiofrequency ablation system further comprises: the temperature control device is arranged on the functional body.

Further, as shown in fig. 3 and 5, 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 contact electrode 141 is connected to the outside of the outer tube. The temperature detection device is provided with a pair of

temperature control wires

143 and 144 connected to a first inner tube 1132, the first inner tube 1132 is provided with a

wire contact

145 and 146, the pair of

temperature control wires

143 and 144 are respectively connected with the pair of

wire contacts

145 and 146, the wire contact 146 at the far end of the first inner tube 1132 is connected with a temperature control wire 144, the wire contact 145 at the near end of the first inner tube 1132 is connected with a temperature control wire 143 to form a closed loop, in the operation of the visible puncture radio frequency ablation system, the temperature of the first inner tube 1132 is influenced to change, when temperature difference exists between the temperature control wire and the first inner tube 1132, electromotive force is formed between the temperature control wire and the first inner tube 1132, so that current is formed in the loop, the current is led out to the radio frequency generator 107 through the wires to complete electric signal transmission, and temperature regulation and control are realized. 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, a wire contact for connecting a pair of temperature controlled wires can also be on the outer tube 1131, and the contact electrode 141 can be on the first inner tube 1132.

In addition, as shown in fig. 3 and fig. 5, a circulation medium inlet 151 and a circulation medium recovery port 161 are provided on a side of the functional body 1 away from the needle head 112, an in-out circulation medium loop 65 extending along a length direction of the puncture needle 11 is provided in the puncture needle 11, the in-out circulation medium loop 65 extends close to the needle head 112, a side of the in-out circulation medium loop 65 away from the needle head 112 communicates with the circulation medium inlet 151 and the circulation medium recovery port 161, a side of the needle tube 113 facing the needle head 112 is at least partially an ablation conduction part 1130 associated with the in-out circulation medium loop 65, 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 practical use, the visible puncture radiofrequency ablation system is externally connected with a cooling water circulation system, and the cooling water circulation system enables water to circulate in the inlet and outlet circulation medium loop 65.

Further, as shown in fig. 3 and 5, the inlet/outlet circulation medium circuit 65 has a liquid inlet channel 15 communicating with the circulation medium inlet 151 and extending in the longitudinal direction of the puncture needle 11, and a liquid outlet channel 16 communicating with the circulation medium recovery port 161 and extending in the longitudinal direction of the puncture needle 11, and the liquid inlet channel 15 communicates with the liquid outlet channel 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. 3, 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, as shown in fig. 3 and 5, a flow tube 150 is disposed in the receiving chamber and communicates with the first inner tube 1132 and the outer tube 1131. The inlet channel 15 is located in the flow pipe 150, and the outlet channel 16 is located between the first inner pipe 1132 and the outer pipe 1131. The temperature control wire 144 penetrates the flow tube 150, extends from one end of the flow tube 150 facing the needle and is connected with 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 control wire 144 and the flow tube 150 and then flows out. It is understood that in other embodiments, as shown in fig. 6 and 7, the temperature control wire 144 may also be disposed between the first inner tube 1132 and the outer tube 1131, but outside the flow-through tube 150.

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.

In some embodiments, as shown in fig. 8, the flow tube 150 may not be provided in the accommodating chamber, but the puncture needle 11 may be provided with a second inner tube 1133 sleeved inside the first inner tube 1132, and the accommodating chamber may be located inside the second inner tube 1133. The first inner tube 1132 is separated from the outer tube 1131 and the second inner tube 1133 to form two liquid passing areas communicated with each other. One of the two liquid-feeding areas is a liquid inlet channel, and the other is a liquid outlet channel. In various embodiments, a pair of temperature-controlled wires may be connected to the first inner tube, the second inner tube, or the outer tube.

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 all exist, the flow pipe 150 is disposed between the first inner pipe 1132 and the second inner pipe 1133, a gap exists 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 the inlet and outlet circulation medium loop 65, and the circulation water may flow between the flow pipe 150 and the gap. The connection between the pair of temperature control wires and the contact electrode 141 is selected from the first inner tube 1132, the second inner tube 1133, the outer tube 1131, and the flow tube 150, but not limited thereto. In actual use, the configuration of the circulating medium circuit 65 is also various.

In addition, as shown in fig. 3 and 6, needle 112 is connected to outer tube 1131. In other embodiments, a needle is also coupled to the first inner tube 1132. Alternatively, the first inner tube 1132 is connected to the outer tube 1131 by a seal around the opening of the needle 112, 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, as shown in FIGS. 3, 6 and 8, the needle 112 is in streamlined and smooth transition with the outer wall of the outer tube 1131, thereby allowing the needle to penetrate more easily into the body.

Further, as shown in fig. 2, fig. 3 and fig. 5, the functional body further includes an insulating layer 19 disposed outside the needle tube 113, and an end of the insulating layer 19 facing the needle 112 is spaced apart from the needle 112, a portion of the needle tube 113 between the needle 112 and the end of the insulating layer 19 facing the needle 112 is exposed, the exposed portion of the needle tube 113 forms an ablation conducting portion 1130, that is, a working portion of the outer tube 1131 is exposed, and a non-working portion of the outer tube 1131 is covered by the insulating layer 19.

Optionally, as shown in fig. 2, the insulating layer 19 may be an insulating sleeve that can be sleeved on the outer tube 1131, or a coating layer that can be 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 seen by means of the scale 20.

Further, as shown in fig. 3 and 5, 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 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 and 4, the imaging illumination 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. 3, the lens 121 and one end of the light guide fiber 122 are disposed at the opening 140 of the receiving chamber. 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. 4, the imaging illumination device 12 is fixedly provided in the functional body 1.

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

Further, as shown in fig. 5, 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 may be disposed outside the handle 18, the light source 50 is mounted in a light source converter fixed to the handle 18, and the light guide fiber 122 is connected to the light source, 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 form a single piece.

Further, as shown in fig. 1, the visible puncture rf ablation system further includes an adapter 17 electrically connected to the lens 121 and the light source 50, the adapter 17 has an image conducting connector 171 thereon, 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, an extension cable 170 is connected to the adapter 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 fastened 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 radio frequency 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 radiofrequency ablation system is used, the adapter 17 is disposed of together with the functional body 1. Also extending from the handle 18 is a radio frequency connection 147 into which the electrode-connecting cable and temperature control leads 143, 144 can be integrated, and which is interfaced to the radio frequency generator 107 via the radio frequency connection 147.

It is understood that in other embodiments, the light source 50 may be absent from the visual puncture rf ablation system 200, and the adapter 27 of the visual puncture rf ablation system is different from the adapter 17 of the visual puncture rf ablation system having the light source 50. Specifically, as shown in fig. 9 and 10, in the visible puncture rf 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, so that the light guide fiber 122 has light to be emitted. The adapter 27 is connected to the functional body 1 by an extension cable 170, which is the same structure as the visible puncture rf ablation system with a light source. The cable of the lens 121 extends to the proximal end of the functional body and the extension cable 170, and the catheter extends to the proximal end of the functional body 1 and the extension cable is connected with the conducting optical fiber 170.

Taking the application of the visual puncture rf ablation system 100 as an example, as shown in fig. 11, when the visual puncture rf ablation system 100 is used, the ultrasonic monitoring device 101 indirectly displays the path of the ablation device that 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 171 is connected to the camera monitoring device 104 to display the position of the needle 112. The patch electrode 108 is connected to the rf generator 107 and is attached to the human body, the patch electrode 108 may be a cathode patch, the contact electrode 141 in the visual puncture rf ablation system may be an anode patch, and in different systems, the patch electrode 108 may also be an anode patch, and the contact electrode 141 in the visual puncture rf ablation system may be a cathode. The implement 1 is inserted into the tissue 105, the needle 112 is inserted over the lesion 106, and the ablation conductor 1130 on the needle 113 is also operated within the lesion to the area to be removed. It should be appreciated that in different embodiments of the visual puncture rf ablation system, the outer component of the visual puncture rf ablation system may be changed accordingly, depending on the configuration of the visual puncture rf ablation system. In addition, the ultrasonic monitoring apparatus 101 may be replaced with another monitoring apparatus such as an X-ray apparatus.

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

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

Further, as shown in fig. 3, 12, 13 and 14, the visible puncture rf 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. 12 and 13, 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 adjusted to a proper position by the locking screw 461 after the lens 121 and the light guide fiber 122 are adjusted.

In addition, as shown in fig. 12 and 13, the visual puncture rf ablation 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.

It will be appreciated that in other embodiments, as shown in fig. 15, there may be no light source in the visual puncture rf ablation system 500, and the cable connecting the lens 121 and the optical fiber 122 in the switch 55, and the switch 55 is used to connect the length shifter 46. The adapter 27 of the visual puncture rf ablation system 500 is different from the adapter 17 of the visual puncture rf ablation system with a light source. Specifically, the system 500 further comprises 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 for the light-source-free visible puncture rf ablation system in the first embodiment, and will not be described 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.

A third embodiment of the present invention is directed to a visual puncture rf ablation system, the third embodiment being substantially the same as the first embodiment, with the primary differences being: in the first embodiment, the contact electrode is one, and in the present embodiment, the contact electrode has two contact electrodes with different polarities, wherein the two contact electrodes are separated from each other.

Taking fig. 16 and 17 as an example, the flow pipe 150 is disposed between the first inner pipe 1132 and the second inner pipe 1133, the

temperature control wires

143 and 144 are connected to the flow pipe 150, the flow pipe 150 is separated from the first inner pipe 1132 and the second inner pipe 1133 to form a liquid passing area, that is, the liquid passing area is located between the first inner pipe 1132 and the second inner pipe 1133, and the liquid passing area and the inner channel of the flow pipe 150 form an inlet and outlet circulation medium loop for flowing cooling water. The contact electrode 142 is connected to the outer tube 1131, the contact electrode 141 is connected to the second inner tube 1133, and one of the two

contact electrodes

141, 142 is an anode and the other is a cathode. It can be understood that, in some embodiments, one electrode may be connected to the needle 112, the other electrode may be connected to the outer tube 1131, and the contact electrode is electrically insulated from the outer tube 1131, so that the needle 112 and the outer tube 1131 are not electrically conducted; of course, in other embodiments, another contact electrode may be connected to the first inner tube 1132 or the second inner tube 1133. That is, the two electrical contact electrodes are connected to different tube bodies of the outer tube, the first inner tube 1132 or the second inner tube 1133, and the two tube bodies connected with the contact electrodes are electrically insulated from each other.

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 visual puncture radio frequency ablation system can be without temperature control function, namely without

temperature control wires

143 and 144, or in other structures, without an in-out circulating medium loop, and the structure can be changed correspondingly according to different function 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.

A fourth embodiment of the present invention relates to a visual puncture rf ablation system, which is substantially the same as the above-mentioned embodiments, in this embodiment, as shown in fig. 18, the visual puncture rf ablation system 600 further includes a patch electrode 108, and the patch electrode 108 is used for externally connecting the rf generator 107. The use of the visual puncture rf ablation system is the same as in the first embodiment and will not be described again. The visual puncture rf ablation system 600 does not include the rf generator 107.

Further, another visual puncture rf ablation system further includes an rf generator 107, the rf generator 107 being operatively electrically connected to the patch electrode 108. The rf generator 107 is part of a visual puncture rf ablation system.

It should be understood that this embodiment is a system embodiment corresponding to the first embodiment and the second embodiment, and 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 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 a puncture experiment is carried out on the isolated pig kidney by using the radio frequency ablation needle of the visual puncture radio frequency ablation system. The puncture process is through ultrasonic image (fig. 21A) judgement needle insertion direction, through the direct-view image (fig. 21B) 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 radio frequency 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 22).

Comparing fig. 21 and 22, 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 radio frequency ablation needle of the 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

1. A visual puncture radio frequency ablation system comprises a radio frequency generator, a functional body connected with the radio frequency generator, and an imaging illumination device, wherein the functional body has the functions of puncture and radio frequency ablation of tissues, the imaging illumination device illuminates and images in the process of puncture and treatment of the tissues of the functional body and conducts the formed images or video signals back to an external display system in real time to assist in puncture and radio frequency ablation, the imaging illumination device is completely or partially positioned in the functional body, an object injection cavity is further arranged inside the functional body, and the object injection cavity is open to the tissues.

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

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

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

5. The visually penetrating radio frequency ablation system of claim 4, wherein said infusion lumen comprises an infusion channel located inside said needle cannula, an infusion port located at the distal end of the needle and within the needle cannula and communicating with the outside, and an exit port open at the proximal end of the needle, said radio frequency ablation cooling lumen comprises a circulating medium injection port and a circulating medium withdrawal port located on the side away from said needle, and a circulating medium return port located inside the needle.

6. The visual puncture radio frequency ablation system of 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 disposed partially or completely around the lens.

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

8. The visual puncture radio frequency ablation system of claim 6 or 7, wherein the visual puncture radio frequency 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 visually penetrating radiofrequency ablation system of claim 8, wherein the functional body further comprises 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 and the handle are one piece.

10. The visual puncture rf ablation system of claim 9, further comprising 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 of any of claims 5-10, wherein the objects that can be injected into the injection cavity through the injection port include medical fluids or other fluids needed for diagnosis and treatment of body tissues, or other instruments needed for surgery, such as laser fibers, guide wires, biopsy forceps, baskets, etc.

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

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

14. The visually penetrating radio frequency ablation system of any of claims 1-12, wherein the visually penetrating radio frequency ablation system further comprises an insulating thermal barrier layer.

15. The visually penetrating radiofrequency ablation system of claim 14, wherein the insulative layer is disposed outside the needle such that the needle is in an enclosure of the insulative layer.

16. The visually penetrating radio frequency ablation system of claim 15, wherein said insulating layer is graduated for monitoring penetration depth.

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