Medical ablation system

Abstract

Provided is a medical ablation system, which comprises a first ablation apparatus, configured to ablate a target affected region, and a first sensing apparatus, configured to sense a first tissue parameter of a first peripheral tissue, the first peripheral tissue being adjacent to the target affected region. A first separation distance between the first sensing apparatus and the first ablation apparatus is equal to a first preset distance.

Description

Medical ablation system TECHNICAL FIELD

[0001] The present invention relates to a medical ablation system capable of sensing a tissue parameter of a peripheral tissue of a target ablation lesion (or target lesion) during a surgical procedure. In particular, the present invention relates to a medical ablation system capable of sensing a tissue parameter of a peripheral tissue of a target ablation lesion during a surgical procedure, and capable of being used with different types of ablation devices or ablation modalities. BACKGROUND

[0002] Current ablation procedures use laser to ablate a target lesion, and use a magnetic resonance imaging (MRI) device to sense the temperature of a peripheral tissue (e.g. a peripheral soft tissue) during the procedure. This allows a medical practitioner to adjust the laser energy based on the temperature of the peripheral tissue, so as to avoid the temperature of the peripheral tissue from being too high and causing necrosis of the peripheral tissue. However, the use of MRI to sense the temperature of the peripheral tissue would result in a high cost of the procedure, and if MRI is used to sense the temperature of the peripheral tissue, the ablation modality would only be able to use laser ablation, and would not be able to use other ablation modalities (e.g. radiofrequency ablation, cryoablation, microwave ablation, etc.), which would greatly limit the usability of the ablation procedure. Therefore, there is a need for a medical ablation system capable of sensing a tissue parameter of a peripheral tissue of a target ablation lesion (or target lesion) during a surgical procedure. Preferably, the medical ablation system would also be capable of being used with different types of ablation devices or ablation modalities.

[0003] SUMMARY

[0004] To address the aforementioned problems, it is an object of the present invention to provide a medical ablation system capable of sensing a tissue parameter of a peripheral tissue of a target ablation lesion (or target lesion) during a surgical procedure. It is another object of the present invention to provide a medical ablation system capable of sensing a tissue parameter of a peripheral tissue of a target ablation lesion during a surgical procedure, and capable of being used with different types of ablation devices or ablation modalities.

[0005] According to the foregoing, the present invention provides a medical ablation system, comprising: a first ablation device configured to ablate a target lesion; and a first sensing device configured to sense a first tissue parameter of a first peripheral tissue, the first peripheral tissue being adjacent to the target lesion; wherein a first separation distance between the first sensing device and the first ablation device is equal to a first predetermined distance.

[0006] In a preferred embodiment of the present invention, the first tissue parameter is one of a temperature or an electrical impedance of the first peripheral tissue.

[0007] In one preferred embodiment of the present application, the first ablation device is one of a Radio Frequency Ablation (RFA) device, a cryoablation device, a Microwave Ablation (MWA) device, an ultrasound ablation device, and a laser ablation device.

[0008] In one preferred embodiment of the present application, the first sensing device is one of a Radio Frequency (RF) sensing device, a temperature sensing device, and an optical fiber sensing device.

[0009] In one preferred embodiment of the present application, the medical ablation system further comprises a fixing device, the fixing device connecting the first ablation device and the first sensing device; wherein the first ablation device has a first connecting portion, the first ablation device connecting the fixing device via the first connecting portion; wherein the first sensing device has a second connecting portion, the first sensing device connecting the fixing device via the second connecting portion.

[0010] In one preferred embodiment of the present application, the first ablation device has an ablation portion, the first ablation device ablates the target lesion via the ablation portion.

[0011] In one preferred embodiment of the present application, the first ablation device is an ablation needle, the ablation portion being disposed at a first tip of the ablation needle.

[0012] In one preferred embodiment of the present application, the first sensing device has a sensing portion, the first sensing device senses the first tissue parameter of the first peripheral tissue via the sensing portion.

[0013] In one preferred embodiment of the present application, the first distance between the first sensing device and the first ablation device is equal to the first preset distance, which means that the first distance between the sensing portion of the first sensing device and the ablation portion of the first ablation device is equal to the first preset distance.

[0014] In one preferred embodiment of the present application, the first sensing device is a needle-shaped sensing device, the sensing portion being disposed at a second tip of the needle-shaped first sensing device.

[0015] In one preferred embodiment of the present application, the first preset distance is determined according to a size of the target lesion.

[0016] In one preferred embodiment of the present application, the first preset distance is determined according to at least one of a radius length of the target lesion, a maximum width of the target lesion, and a minimum width of the target lesion.

[0017] In one preferred embodiment of the present application, the medical ablation system further comprises a control unit communicatively coupled to the first ablation device and the first sensing device, wherein the control unit controls the first ablation device according to the first tissue parameter sensed by the first sensing device.

[0018] In one preferred embodiment of the present application, the control unit stops the first ablation device from ablating the target lesion when the first sensing device senses that the first tissue parameter reaches a default threshold.

[0019] In one preferred embodiment of the present application, the medical ablation system further comprises a second ablation device for ablating the target lesion.

[0020] In one preferred embodiment of the present application, the medical ablation system further comprises a second sensing device for sensing a second tissue parameter of a second surrounding tissue adjacent to the target lesion, wherein a first distance between the first sensing device and the first ablation device is less than a second distance between the first sensing device and the second ablation device, wherein a third distance between the second sensing device and the second ablation device is less than a fourth distance between the second sensing device and the first ablation device, and wherein a second separation distance between the second sensing device and the second ablation device is equal to a second preset distance.

[0021] In one preferred embodiment of the present application, the medical ablation system further comprises a second sensing device for sensing a second tissue parameter of a second surrounding tissue adjacent to the target lesion, wherein a second separation distance between the second sensing device and the first ablation device is less than or equal to a second preset distance.

[0022] In one preferred embodiment of the present application, the second preset distance is determined according to a size of the target lesion.

[0023] In one preferred embodiment of the present application, the second preset distance is equal to or greater than a distance length between a placement position of the first ablation device and a boundary of the target lesion.

[0024] The foregoing and other aspects of the present application are best understood from the following detailed description when read in connection with the accompanying drawings. It is noted that, as used in the specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless expressly and unequivocally limited by the context. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a schematic diagram of one embodiment of the medical ablation system of the present application.

[0026] FIG. 2 is a schematic diagram of one embodiment of the medical ablation system of the present application.

[0027] FIG. 3 is a schematic diagram of one embodiment of the medical ablation system.

[0028] FIG. 4 is a schematic diagram of one embodiment of the medical ablation system.

[0029] FIG. 5A is a schematic diagram of one embodiment of the medical ablation system.

[0030] FIG. 5B is a schematic diagram of one embodiment of the medical ablation system. DETAILED DESCRIPTION

[0031] Referring to FIG. 1, a schematic diagram of one embodiment of the medical ablation system according to the present application is illustrated. As shown in the embodiment of FIG. 1, the medical ablation system 100 can include a first ablation device 110 and a first sensing device 120. The first ablation device 110 can ablate a target lesion 910, and the first sensing device 120 can sense a tissue parameter (referred to as a first tissue parameter) of a first surrounding tissue 920 adjacent to the target lesion 910. The first sensing device 120 is spaced apart from the first ablation device 110 by a first predetermined distance. Preferably, the first surrounding tissue 920 is normal tissue adjacent to the target lesion 910. For example, the target lesion can be a tumor, and the first surrounding tissue is normal tissue adjacent to the tumor. Preferably, the first tissue parameter is one of a temperature and an electrical impedance of the first surrounding tissue 920 (temperature of the first surrounding tissue 920 is preferred).

[0032] It should be appreciated that in certain ablation procedures (e.g., brain ablation procedures), the surrounding normal tissue is fragile or not easily recoverable, and thus the ablation range needs to be precisely controlled and excessive damage to the surrounding normal tissue should be avoided. The present application allows the user to precisely control the ablation range based on the tissue parameter of the surrounding tissue, thereby avoiding excessive damage to the surrounding normal tissue during the ablation procedure.

[0033] It should be appreciated that the first ablation device 110 can be one of a radio frequency ablation (RFA) device, a cryoablation device, a microwave ablation (MWA) device, an ultrasound ablation device, and a laser ablation device, but is not limited thereto. The first ablation device can also be other types of ablation devices as needed. The first sensing device 120 can be one of a radio frequency (RF) sensing device, a temperature sensing device, and an optical fiber sensing device, but is not limited thereto. The first sensing device can also be other types of sensing devices as needed.

[0034] In the embodiment shown in FIG. 1, the first ablation device 110 can have an ablation portion 112, and the first ablation device 110 ablates the target lesion 910 by the ablation portion 112. In one embodiment, the first ablation device 110 is an ablation needle, and the ablation portion 112 is disposed at the front end (may be referred to as a first front end) of the ablation needle. The first sensing device 120 can have a sensing portion 122, and the first sensing device 120 senses the first tissue parameter of the first surrounding tissue 920 by the sensing portion 122. In one embodiment, the first sensing device 120 is a needle-like sensing device, and the sensing portion 122 is disposed at the front end (may be referred to as a second front end) of the needle-like sensing device.

[0035] Preferably, the first distance between the first sensing device 120 and the first ablation device 110 is equal to the first predetermined distance. In one embodiment, the first distance between the sensing portion 122 of the first sensing device 120 and the ablation portion 112 of the first ablation device 110 is equal to the first predetermined distance. In one embodiment, the first sensing portion 922 of the first sensing device 920 can contact the first surrounding tissue 920, and thus the first sensing device 920 can more accurately sense the first tissue parameter of the first surrounding tissue 920 (e.g., the temperature or the electrical impedance of the first surrounding tissue).

[0036] In one embodiment, the first predetermined distance is determined according to the size of the target lesion 910. For example, the first predetermined distance can be equal to the distance between the placement position of the ablation portion 112 of the first ablation device 110 (which is usually at the center point of the target lesion, but is not limited thereto) and the boundary 912 of the target lesion 910 (i.e., the sensing portion 122 of the first sensing device 120 can be disposed at the boundary 912 of the target lesion 910). For another example, the first predetermined distance can be greater than the distance between the placement position of the ablation portion 112 of the first ablation device 110 (which is usually at the center point of the target lesion, but is not limited thereto) and the boundary 912 of the target lesion 910. In this way, the target lesion 910 can be completely ablated, and the situation that the target lesion is not completely ablated can be avoided. In one embodiment, the size of the target lesion is 0.5 cm, and the first predetermined distance is 1 cm.

[0037] In one embodiment, the first preset distance is determined according to at least one of a radius of the target lesion 910, a maximum width of the target lesion 910, and a minimum width of the target lesion 910. For example, the first preset distance can be equal to the radius of the target lesion 910, or the first preset distance can be greater than the radius of the target lesion 910, or the first preset distance can be equal to half of the maximum width of the target lesion 910, or the first preset distance can be greater than half of the maximum width of the target lesion 910, or the first preset distance can be equal to half of the minimum width of the target lesion 910, or the first preset distance can be greater than half of the minimum width of the target lesion 910. It should be appreciated that the first preset distance can not be determined according to only the radius and / or the maximum width and / or the minimum width of the target lesion 910. In different needs or different situations, the first preset distance can also be determined according to other criteria. For example, the first preset distance can also be determined according to a diameter or an average width of the target lesion 910 (the target lesion can not be circular), but not limited thereto.

[0038] In one embodiment, the medical ablation system 100 can further comprise a control unit 140, which can be communicatively connected (wired or wireless connection) to the first ablation device 110 and the first sensing device 120. The control unit 140 can control the first ablation device 110 according to the first tissue parameter sensed by the first sensing device 120. Preferably, the first sensing device 110 can continuously transmit the sensed first tissue parameter to the control unit 140, so that the control unit 140 can continuously monitor the first tissue parameter. Preferably, when the first sensing device 110 senses that the first tissue parameter reaches a default threshold, the control unit 140 instructs the first ablation device 110 to stop ablation of the target lesion 910. For example, when the first sensing device 120 senses that the temperature of the first peripheral tissue 920 reaches a default temperature threshold, the control unit 140 suspends or reduces the energy provided to the first ablation device 110 (for example, temporarily powers off the ablation device), thereby temporarily stopping the first ablation device 110 from ablation of the target lesion 910.

[0039] Referring to FIG. 2, a schematic diagram of one embodiment of a medical ablation system according to the present application is illustrated. As shown in the embodiment of FIG. 2, the medical ablation system 200 can include a first ablation device 210, a first sensing device 220, and a fixation device 230. The first ablation device 210 has an ablation portion 212 at a front end thereof (which can be referred to as a first front end), and the first ablation device 210 can ablate a target lesion 910 via the ablation portion 212. The first sensing device 220 has a sensing portion 222 at a front end thereof (which can be referred to as a second front end), and the first sensing device 220 can sense a tissue parameter (which can be referred to as a first tissue parameter) of a first surrounding tissue 920 adjacent to the target lesion 910 via the sensing portion 222. In this embodiment, a first separation distance between the first sensing device 220 and the first ablation device 210 is equal to a first predetermined distance. Preferably, the first surrounding tissue 920 is normal tissue adjacent to the target lesion 910. Preferably, the first tissue parameter is one of a temperature and an electrical impedance of the first surrounding tissue 920 (with the temperature being preferred).

[0040] In the embodiment of FIG. 2, the first ablation device 210 has a first connecting portion 214, and the first ablation device 210 can be connected to the fixation device 230 via the first connecting portion 214. The first sensing device 220 has a second connecting portion 224, and the first sensing device 220 can be connected to the fixation device 230 via the second connecting portion 224.

[0041] Preferably, the first ablation device 210 can have a first rear end, the first rear end and the first front end of the first ablation device 210 are opposite to each other, and the first connecting portion 214 is disposed at the first rear end 214. It should be appreciated that the first connecting portion 214 can not be disposed only at the first rear end of the first ablation device 210, but can be disposed at other portions of the first ablation device 210 according to requirements. For example, if it is required to increase a connecting area between the first ablation device 210 and the fixation device 230 to improve a fixation degree therebetween, the first ablation device 210 can be connected to the fixation device 230 at a middle section of the first ablation device 210 (i.e., the first connecting portion 214 is disposed at the middle section of the first ablation device 210).

[0042] Preferably, the first sensing device 220 can have a second end, the second end of the first sensing device 220 opposite to the first end, and the second connecting portion 224 is disposed at the second end. It should be appreciated that the second connecting portion 224 can not be disposed only at the second end of the first sensing device 220, but can be disposed at other positions of the first sensing device 220 according to requirements. For example, if the connecting area between the first sensing device 220 and the fixing device 230 needs to be increased to improve the fixing degree therebetween, the middle section of the first sensing device 220 can be connected with the fixing device 230 (i.e. the second connecting portion 224 is disposed at the middle section of the first sensing device 220).

[0043] It should be appreciated that by connecting the first ablation device 210 and the first sensing device 220 together to the fixing device 230, the distance between the first ablation device 210 and the first sensing device 220 can be maintained, and the controllability of the medical ablation system 200 can be improved. In this way, the user only needs to control the fixing device 230, and the first ablation device 210 and the first sensing device 220 can be moved or controlled at the same time.

[0044] Preferably, the fixing device 230 can have a plurality of connecting portions, so that one or more sensing devices can be connected to the fixing device 230 according to requirements, or one or more ablation devices can be connected to the fixing device 230 according to requirements. Preferably, the medical ablation system can have a plurality of fixing devices according to requirements, and each fixing device can have different sizes. By using fixing devices of different sizes, the distance between the sensing device and the ablation device can be different. In this way, the user can select a suitable fixing device according to requirements.

[0045] Please refer to FIG. 3, which illustrates a schematic diagram of one specific embodiment of the medical ablation system according to the present application. As shown in the embodiment of FIG. 3, the medical ablation system 300 can include a first ablation device 310, a first sensing device 320, and a second sensing device 350. The first ablation device 310 can ablate a target lesion 910, the first sensing device 320 can sense a tissue parameter (which can be referred to as a first tissue parameter) of a first surrounding tissue 920, and the second sensing device 350 can sense a tissue parameter (which can be referred to as a second tissue parameter) of a second surrounding tissue 930. The first surrounding tissue 920 and the second surrounding tissue 930 are both adjacent to the target lesion 910. The first distance between the first sensing device 320 and the first ablation device 310 is equal to a first preset distance, and the second distance between the second sensing device 350 and the first ablation device 310 is equal to a second preset distance. Preferably, the first surrounding tissue 920 and the second surrounding tissue are both adjacent to normal tissue of the target lesion 910.

[0046] Preferably, the first sensing position of the first sensing device 320 and the second sensing position of the second sensing device 350 are opposite to each other. For example, the first sensing position of the first sensing device 320 and the second sensing position of the second sensing device 350 can be respectively arranged on the left and right sides of the first ablation device 310, or respectively arranged on the front and back sides of the first ablation device 310. Preferably, the function, structure, type, usage mode and arrangement mode of the second sensing device 350 can be similar or identical to those of the first sensing device 320. Therefore, the arrangement mode and related features of the second sensing device 350 can also be referred to the foregoing content. For example, the second sensing device 350 can also have a fourth connecting portion and a second sensing portion. The second sensing device 350 can be connected to the fixing device through the fourth connecting portion, and the second sensing device 350 can sense the second tissue parameter of the second surrounding tissue 930 through the second sensing portion. Preferably, the arrangement mode of the second preset distance can be similar or identical to that of the first preset distance.

[0047] In different embodiments, the first preset distance can be determined according to the size of the target lesion 920, or the first preset distance can be determined according to at least one of the radius length of the target lesion 910, the maximum width of the target lesion 910 and the minimum width of the target lesion 910. In different embodiments, the second preset distance can be determined according to the size of the target lesion 920, or the second preset distance can be determined according to at least one of the radius length of the target lesion 910, the maximum width of the target lesion 910 and the minimum width of the target lesion 910.

[0048] In one embodiment, the first preset distance can be equal to or greater than the distance length between the placement position of the first ablation device 310 and the boundary 912 of the target lesion 910. The placement position of the first ablation device 310 is usually located at the center point of the target lesion, but is not limited thereto. In one embodiment, the second preset distance can be equal to or greater than the distance length between the placement position of the first ablation device 310 and the boundary 912 of the target lesion 910. The placement position of the first ablation device 310 is usually located at the center point of the target lesion, but is not limited thereto.

[0049] It should be understood that the first preset distance and the second preset distance can be set to the same value as needed. Alternatively, the first preset distance and the second preset distance can be set to different values as needed. It should be understood that the medical ablation system of the present application can not only have one or two sensing devices, but can also be configured with any number of sensing devices as needed. For example, when the area of the target lesion is large, more sensing devices can be needed to ensure the accuracy and precision of the ablation operation.

[0050] Referring to FIG. 4, a schematic diagram of one embodiment of a medical ablation system according to the present application is illustrated. As shown in the embodiment of FIG. 4, the medical ablation system 400 can include a first ablation device 410, a second ablation device 460, a first sensing device 420, and a second sensing device 450. The first ablation device 410 and the second ablation device 460 can ablate a target lesion 910, the first sensing device 420 can sense a tissue parameter (referred to as a first tissue parameter) of a first surrounding tissue 920, and the second sensing device 450 can sense a tissue parameter (referred to as a second tissue parameter) of a second surrounding tissue 930. The first surrounding tissue 920 and the second surrounding tissue 930 are both adjacent to the target lesion 910. The distance between the first sensing device 420 and the first ablation device 410 (referred to as a first distance) is less than the distance between the first sensing device 420 and the second ablation device 460 (referred to as a second distance). The distance between the second sensing device 450 and the second ablation device 460 (referred to as a third distance) is less than the distance between the second sensing device 450 and the first ablation device 410 (referred to as a fourth distance). The first distance between the first sensing device 420 and the first ablation device 410 is equal to a first predetermined distance, and the second distance between the second sensing device 450 and the second ablation device 460 is equal to a second predetermined distance. Preferably, the first surrounding tissue 920 and the second surrounding tissue are both normal tissues adjacent to the target lesion 910.

[0051] Preferably, the function, structure, type, usage, and arrangement of the second ablation device 460 can be similar to or the same as the function, structure, type, usage, and arrangement of the first ablation device 410. Therefore, the second ablation device 460 can be arranged as described above. For example, the second ablation device 460 can have a third connecting portion and a second ablation portion. The second ablation device 460 can be connected to a fixing device via the third connecting portion, and the second ablation device 460 can ablate the target lesion via the second ablation portion. It should be understood that the medical ablation system according to the present application can have one or two ablation devices, and can have any number of ablation devices according to the need. For example, when the target lesion has a large area, more ablation devices can be arranged to completely ablate the target lesion. It should be understood that the medical ablation system can have any number (referred to as a first number, which can be one or more) of ablation devices and any number (referred to as a second number, which can be one or more) of sensing devices according to the need. The number of ablation devices and the number of sensing devices can be the same or different according to the need.

[0052] Referring to FIGS. 5A and 5B, schematic diagrams of one embodiment of the medical ablation system according to the present application are shown. As shown in the embodiment of FIGS. 5A and 5B, the medical ablation system 500 includes a first ablation device 510, a first sensing device 520, and a fixing device 530. The first ablation device 510 and the first sensing device 520 are connected to the fixing device 530 for easy manipulation by a user.

[0053] The medical ablation system according to the present application has been described above and illustrated in the accompanying drawings. It should be understood that each of the embodiments described herein can be used in combination as desired. It should be understood that each of the embodiments of the present application is merely illustrative and that various changes can be made without departing from the scope and spirit of the present application, and all such changes are intended to be included within the scope of the present application. Therefore, the embodiments described herein are not intended to limit the present application, and the true scope and spirit of the present application are disclosed in the scope of the claims.

[0054] BRIEF DESCRIPTION OF DRAWINGS

[0055] 100 medical ablation system

[0056] 110 first ablation device

[0057] 112 ablation portion

[0058] 120 first sensing device

[0059] 122 sensing portion

[0060] 140 control portion

[0061] 200 medical ablation system

[0062] 210 first ablation device

[0063] 212 ablation portion

[0064] 214 first connecting portion

[0065] 220 first sensing device

[0066] 222 sensing portion

[0067] 224 second connecting portion

[0068] 230 fixing device

[0069] 300 medical ablation system

[0070] 310 first ablation device

[0071] 320 first sensing device

[0072] 350 second sensing device

[0073] 400 medical ablation system

[0074] 410 first ablation device

[0075] 420 first sensing device

[0076] 450 second sensing device

[0077] 460 second ablation device

[0078] 500 medical ablation system

[0079] 510 first ablation device

[0080] 520 first sensing device

[0081] 530 fixation device

[0082] 910 target lesion

[0083] 912 boundary

[0084] 920 first peripheral tissue

[0085] 930 second peripheral tissue

Claims

1. A medical ablation system, comprising: a first ablation device configured to ablate a target lesion; and a first sensing device configured to sense a first tissue parameter of a first surrounding tissue adjacent to the target lesion; wherein a first distance between the first sensing device and the first ablation device is equal to a first predetermined distance. 2.The medical ablation system of claim 1, wherein the first tissue parameter is one of a temperature or an electrical impedance of the first surrounding tissue. 3.The medical ablation system of claim 1, wherein the first ablation device is one of a Radio Frequency Ablation (RFA) device, a cryoablation device, a Microwave Ablation (MWA) device, an ultrasound ablation device, and a laser ablation device. 4.The medical ablation system of claim 1, wherein the first sensing device is one of a Radio Frequency (RF) sensing device, a temperature sensing device, and an optical fiber sensing device. 5.The medical ablation system of claim 1, further comprising a fixation device configured to connect the first ablation device and the first sensing device; wherein the first ablation device has a first connecting portion configured to connect the fixation device; and wherein the first sensing device has a second connecting portion configured to connect the fixation device. 6.The medical ablation system of claim 1, wherein the first ablation device has an ablation portion configured to ablate the target lesion. 7.The medical ablation system of claim 6, wherein the first ablation device is an ablation needle, and the ablation portion is disposed at a first tip of the ablation needle. 8.The medical ablation system of claim 6, wherein the first sensing device has a sensing portion configured to sense the first tissue parameter of the first surrounding tissue. 9.The medical ablation system of claim 8, wherein the first distance between the first sensing device and the first ablation device being equal to the first predetermined distance means that a first distance between the sensing portion of the first sensing device and the ablation portion of the first ablation device is equal to the first predetermined distance. 10.The medical ablation system of claim 8, wherein the first sensing device is a needle-shaped sensing device, and the sensing portion is disposed at a second tip of the needle-shaped first sensing device. 11.The medical ablation system of claim 1, wherein the first predetermined distance is determined according to a size of the target lesion. 12.The medical ablation system of claim 1, wherein the first predetermined distance is determined according to at least one of a radius length of the target lesion, a maximum width of the target lesion, and a minimum width of the target lesion.

13. The medical ablation system of claim 1, further comprising a control unit communicatively coupled to the first ablation device and the first sensing device, wherein the control unit controls the first ablation device based on the first tissue parameter sensed by the first sensing device.

14. The medical ablation system of claim 13, wherein the control unit stops the first ablation device from ablating the target site when the first sensing device senses that the first tissue parameter reaches a default threshold.

15. The medical ablation system of claim 1, further comprising a second ablation device configured to ablate the target site.

16. The medical ablation system of claim 15, further comprising: a second sensing device configured to sense a second tissue parameter of a second surrounding tissue adjacent to the target site; wherein a first distance between the first sensing device and the first ablation device is less than a second distance between the first sensing device and the second ablation device; wherein a third distance between the second sensing device and the second ablation device is less than a fourth distance between the second sensing device and the first ablation device; and wherein a second distance between the second sensing device and the second ablation device is equal to a second predetermined distance.

17. The medical ablation system of claim 1, further comprising: a second sensing device configured to sense a second tissue parameter of a second surrounding tissue adjacent to the target site; wherein a second distance between the second sensing device and the first ablation device is less than or equal to a second predetermined distance.

18. The medical ablation system of claim 17, wherein the second predetermined distance is determined based on a size of the target site.

19. The medical ablation system of claim 17, wherein the second predetermined distance is equal to or greater than a distance between a placement position of the first ablation device and a boundary of the target site. ​ ​ ​ ​ ​ ​ ​

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