Positioner

Abstract

The utility model provides a positioner, which relates to the technical field of positioning, and is characterized in that an opening is formed in the middle of a base, an adjusting part is arranged on the base, and the adjusting part is erected on the opening; the mounting part is movably connected with the adjusting part, so that the mounting part can be close to or far away from the base, the mounting part is used for mounting a microwave ablation needle, and the piercing end of the microwave ablation needle can pierce into a to-be-treated part of a human body through the opening, so that the piercing end of the microwave ablation needle can accurately and stably pierce into tumor tissues in the human body through the structural design; the control precision of a clinician on the position of the tumor tissue in the human body is improved, and the technical problems existing in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning, and in particular to a locator. Background Art

[0002] With the continuous popularization of tumor microwave ablation technology, tumor microwave ablation technology has been widely applied in clinical practice. Tumor microwave ablation technology uses the high-temperature thermal effect to kill tumor cells. Its principle is actually the same as that of a "microwave oven", that is, through microwave heating, the tumor tissue undergoes coagulative necrosis, achieving the purpose of "burning to death" tumor cells.

[0003] Currently, during the microwave ablation surgery, clinicians insert the microwave ablation needle into the tumor tissue in the human body based on their experience and touch. Since the tumor tissue will shift in position with activities such as human breathing, especially during surgeries on deep organs, once such a situation occurs, performing the surgery solely based on the experience and touch of clinicians may pose a great risk to the entire surgery.

[0004] Therefore, the above technical problems need to be further solved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a locator to alleviate the technical problems in the related art.

[0006] The present application provides a locator, including:

[0007] A base, an opening is provided in the middle of the base, an adjusting part is provided on the base, and the adjusting part is mounted on the opening;

[0008] An installation part, the installation part is movably connected to the adjusting part so that the installation part can approach or move away from the base. The installation part is used for installing a microwave ablation needle, and the piercing end of the microwave ablation needle can pierce into the part to be treated of the human body through the opening.

[0009] Optionally, in the aforementioned locator, the adjusting part is a support ear in an arc shape, and a guiding groove is provided on the support ear along the extending direction of the support ear;

[0010] Wherein, the support ear straddles the opening and is connected to the base, and the guiding groove is movably connected to the installation part.

[0011] Optionally, in the aforementioned locator, the installation part is a block in a U shape, a convex block is provided in the groove of the block, and the block can be clamped on the support ear through the groove so that the convex block extends into the guiding groove and is in sliding fit with the guiding groove. Among them, the side walls in contact between the groove and the support ear and between the convex block and the guiding groove are all smooth;

[0012] The block and the protrusion are both provided with channels along a first direction, and the two channels are connected to guide the insertion end of the microwave ablation needle to penetrate the treated area through the two connected channels and the opening. The first direction is the direction from the supporting ear to the base.

[0013] Optionally, the aforementioned locator further comprises:

[0014] A locking piece is threadedly connected to an end of the protrusion away from the block body, and the locking piece is used to cooperate with the protrusion to lock or unlock the block body on the supporting ear.

[0015] Optionally, in the aforementioned positioner, a first scale is provided on the supporting ear.

[0016] Optionally, in the aforementioned positioner, the supporting ear is movably connected to the base so that the supporting ear can move closer to or farther away from the base.

[0017] Optionally, the aforementioned locator further comprises:

[0018] A measuring device, the measuring device is arranged on the base and located on one side of the supporting ear, the extending direction of the measuring device is perpendicular to the extending direction of the supporting ear, and the side of the measuring device opposite to the supporting ear has a second scale;

[0019] Wherein, a side wall of the supporting ear opposite to the measuring device contacts a side wall of the measuring device having the second scale, and a side wall of the supporting ear can reciprocate along an extension direction of the measuring device.

[0020] Optionally, in the aforementioned positioner, both sides of the supporting ear are provided with rotating rods, the rotating rod on one side of the supporting ear is inserted into the base below the measuring device through the opening, and the rotating rod on the other side of the supporting ear is inserted into the base opposite to the measuring device through the opening;

[0021] Wherein, the supporting ear is rotatably connected to the base through the two rotating rods, so that a side wall of the supporting ear can reciprocate along the extending direction of the measuring device.

[0022] Optionally, the aforementioned locator further comprises:

[0023] A pressing piece, which is arranged on the base and aligned with the measuring device, and is threadedly connected to the base;

[0024] The pressing member reciprocates on the base so that one end of the pressing member located in the base abuts against or moves away from the rotating rod on the other side of the supporting ear, and maintains or releases the relative position relationship between the supporting ear and the base.

[0025] Optionally, in the aforementioned positioner, a notch is provided on the peripheral side of the base, the notch extends toward the opening and communicates with the opening;

[0026] Wherein, the supporting ear is located between the block and the notch.

[0027] By means of the above technical solution, the positioner of the present application has at least the following advantages:

[0028] The locator provided in the embodiment of the present application, through the base and the adjustment part, places the mounting part on the part to be treated in the human body, and at the same time determines the position and angle between the mounting part and the adjustment part, so as to ensure that when the microwave ablation needle is placed on the human body through the mounting part, the insertion end of the microwave ablation needle can penetrate into the tumor tissue in the human body through the opening. This structural design enables the insertion end of the microwave ablation needle to accurately and stably penetrate into the tumor tissue in the human body, thereby improving the control accuracy of the clinical physician over the position of the tumor tissue in the human body, and effectively solving the technical problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A schematic diagram of the structure of a locator from a first perspective provided by an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of the structure of a locator from a second viewing angle provided by an embodiment of the utility model;

[0032] Figure 3 A schematic diagram of the structure of the mounting portion of the positioner provided in an embodiment of the utility model;

[0033] Figure 4 A schematic diagram of the structure of the adjustment part of the positioner provided in an embodiment of the utility model.

[0034] icon:

[0035] 1. Base; 2. Opening; 3. Adjustment part; 4. Mounting part; 5. Guide groove; 6. Bump; 7. Locking piece; 8. Measuring device; 9. Rotating rod; 10. Pressing piece; 11. Notch; 12. Surgical drape. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example

[0040] like Figure 1 - Figure 4 As shown, the positioner provided in the embodiment of the utility model comprises: a base 1 and a mounting portion 4;

[0041] An opening 2 is provided in the middle of the base 1, and an adjusting portion 3 is provided on the base 1, and the adjusting portion 3 is mounted on the opening 2;

[0042] The mounting portion 4 is movably connected to the adjusting portion 3 so that the mounting portion 4 can be moved closer to or farther from the base 1 . The mounting portion 4 is used to mount a microwave ablation needle, and the insertion end of the microwave ablation needle can penetrate the part of the human body to be treated through the opening 2 .

[0043] Specifically, the base 1 is a bottom plate with a supporting effect. The base 1 is used to provide support force for the adjustment part 3. The shape of the base 1 can be a regular shape, such as: circular or rectangular, or an irregular shape. In the present application, the shape of the base 1 is preferably circular.

[0044] Opening 2 is used for the insertion end of the microwave ablation needle to penetrate into the part to be treated in the human body. The shape of opening 2 can be a regular shape, such as a circle or a rectangle, or an irregular shape, as long as it is convenient for the insertion end of the microwave ablation needle to penetrate into the part to be treated in the human body. In the present application, the shape of opening 2 is preferably a circle.

[0045] When the base 1 is placed on the human body, a surgical drape 12 is laid between the bottom of the base 1 and the human skin, and the hole of the surgical drape 12 is connected to the opening 2 of the base 1. The surgical drape 12 is provided on the one hand to isolate bacterial infection, reduce and avoid contamination, and also to achieve local disinfection; on the other hand, the surgical drape 12 can provide friction for the base 1 to ensure that the base 1 can stand stably on the human body.

[0046] The adjusting portion 3 can provide support for the mounting portion 4, and the adjusting portion 3 is movably connected to the mounting portion 4, so that the mounting portion 4 can be close to or away from the base 1 through the adjusting portion 3, that is, the microwave ablation needle installed on the mounting portion 4 can have the effect of adjusting the angle, wherein the mounting portion 4 can be cylindrical, and the microwave ablation needle is abutted against the mounting portion 4 by bolts, so that the microwave ablation needle is installed on the mounting portion 4; the microwave ablation needle can also be installed in the cylindrical mounting portion 4 by magnetic attraction; the microwave ablation needle can also be installed in the cylindrical mounting portion 4 by snap-fitting. The mounting portion 4 can also be a solid elongated body, and the microwave ablation needle can be installed on the mounting portion 4 by bolt connection and fixing; the microwave ablation needle can also be installed on the elongated body by magnetic attraction; the microwave ablation needle can also be installed on the elongated body by snap-fitting. The mounting portion 4 is used to mount the microwave ablation needle, and the axial direction of the mounting portion 4 is parallel to or overlaps with the axial direction of the microwave ablation needle. This structural design facilitates the mounting portion 4 to cooperate with the adjustment portion 3, so that the insertion end of the microwave ablation needle can penetrate the part to be treated in the human body through the opening 2. The adjustment portion 3 can also support the mounting portion 4.

[0047] It should be noted that the base 1 and the mounting portion 4 are both made of sterile materials with a certain strength. Microwave ablation needle is a minimally invasive treatment method. Microwave ablation needle usually includes an ablation needle and a cold circulation system. It is a relatively new treatment technology and a minimally invasive treatment method that can treat tumors, cancers, and nodules. Under the guidance of B-ultrasound or CT, the microwave needle is penetrated into the tumor or nodule site. Under the action of the microwave field, the high-speed movement generates heat to rapidly heat up the tumor, and the tumor or nodule is necrotic, achieving the therapeutic effect. This method can inhibit the spread of tumors. Microwave ablation needles can be obtained through purchase. The surgical drape 12 has different names according to the different operations it is used for, such as "liver puncture drape", which is simply understood as a drape used for liver surgery. The size of the drape is summarized by doctors through long-term clinical experiments. The length, width and hole size are strictly controlled during the production process and are generally controlled within ±1cm, so it is not just a piece of cloth. Hole drapes are generally made of non-woven fabrics, and these non-woven fabrics have been treated with three anti-alcohol, anti-blood, and anti-microbial agents, and some have also been treated with anti-static agents. Surgical hole drapes 12 can be obtained through purchase.

[0048] The locator provided in the embodiment of the utility model, through the base 1 and the adjusting part 3, places the mounting part 4 on the part to be treated of the human body, and at the same time determines the position and angle between the mounting part 4 and the adjusting part 3, so as to ensure that when the microwave ablation needle is placed on the human body through the mounting part 4, the insertion end of the microwave ablation needle can penetrate into the tumor tissue in the human body through the opening 2. This structural design enables the insertion end of the microwave ablation needle to accurately and stably penetrate into the tumor tissue in the human body, thereby improving the control accuracy of the clinical physician on the position of the tumor tissue in the human body, and effectively solving the technical problems existing in the prior art.

[0049] like Figure 1 - Figure 2 and Figure 3 As shown, in a specific implementation, the adjustment portion 3 is an arc-shaped supporting ear, and a guide groove 5 is provided on the supporting ear along the extension direction of the supporting ear; wherein the supporting ear spans over the opening 2 and is connected to the base 1, and the guide groove 5 is movably connected to the mounting portion 4.

[0050] Specifically, the arc-shaped support ear can facilitate the support ear to be connected to the base 1 while spanning the opening 2. The support ear and the base 1 can be connected in a detachable manner or in a fixed connection manner, which is not limited in this application. The support ear spanning the opening 2 can facilitate the installation of the microwave ablation needle on the mounting portion 4, so that the insertion end of the microwave ablation needle can penetrate the tumor tissue in the human body through the opening 2. The guide groove 5 can facilitate the cooperation with the mounting portion 4, so that the microwave ablation needle installed on the mounting portion 4 can approach or move away from the base 1 through the guide groove 5, that is, the microwave ablation needle installed on the mounting portion 4 has the effect of adjusting the angle.

[0051] As Figure 1 - Figure 4 shown, in a specific implementation, the installation part 4 is a block in a U shape, and a convex block 6 is arranged in the groove of the block. The block can be clamped on the support ear through the groove, so that the convex block 6 extends into the guide groove 5 and is in sliding fit with the guide groove 5. Among them, the side walls in contact between the groove and the support ear and between the convex block 6 and the guide groove 5 are all smooth; both the block and the convex block 6 are provided with channels along the first direction, and the two channels are communicated with each other for guiding the piercing end of the microwave ablation needle to penetrate through the two communicated channels through the opening 2 into the part to be treated. The first direction is the direction from the support ear to the base 1.

[0052] Specifically, the U-shaped block facilitates the installation part 4 to be clamped on the support ear while enabling the convex block 6 in the groove of the block to extend into the guide groove 5 and be in sliding fit with the guide groove 5, so that the microwave ablation needle installed on the installation part 4 can approach or move away from the base 1 through the guide groove 5, that is, the microwave ablation needle installed on the installation part 4 has the effect of adjusting the angle.

[0053] The block and the convex block 6 can be of a split structure or an integral structure. When the block and the convex block 6 adopt a split structure, the block and the convex block 6 can be connected in a detachable manner or in a fixed connection manner, for example: snap connection, bolt connection or bonding. In this application, the block and the convex block 6 are preferably forged by an integral machining and casting method. This structural design can not only improve the connection strength between the block and the convex block 6, but also improve the toughness of the overall component. The groove is used for the block to be clamped with the support ear, so as to facilitate the convex block 6 to extend into the guide groove 5 and be in sliding fit with the guide groove 5. The side walls in contact between the convex block 6 and the guide groove 5 are all smooth, so as to facilitate the convex block 6 to reciprocate along the extension direction of the guide groove 5.

[0054] The first direction is the direction from the support ear to the base 1, that is, the first direction is the vertical direction. Both the block and the convex block 6 are provided with channels along the vertical direction, and the channel of the block is communicated with the channel of the convex block 6, so as to facilitate the piercing end of the microwave ablation needle to penetrate through the two communicated channels through the opening 2 into the part to be treated.

[0055] As Figure 1 - Figure 4 shown, in a specific implementation, it further includes: a locking member 7;

[0056] The locking member 7 is threadedly connected to the end of the convex block 6背离 the block, and the locking member 7 is used to cooperate with the convex block 6 to lock or unlock the block on the support ear.

[0057] Specifically, the locking member 7 is a nut, and a screw is provided at one end of the projection 6 away from the block, and the nut is threadedly connected with the screw to achieve the effect of locking or releasing the block on the support ear. The screw and the projection 6 can be connected in a detachable manner or in a fixed connection manner, such as bonding or clamping.

[0058] When the nut is rotated left or right, the nut and the protrusion 6 are close to each other, and the groove of the block is matched to lock the block on the support ear, and the relative position relationship between the block and the support ear is maintained;

[0059] When the nut is rotated clockwise or counterclockwise, the nut and the protrusion 6 move away from each other, so that the block can move closer to or farther from the base 1 through the cooperation between the protrusion 6 and the guide groove 5 .

[0060] like Figure 1 and Figure 4 As shown, in a specific implementation, a first scale is provided on the supporting ear.

[0061] Specifically, the first scale is used to indicate the parameters of the specific angle between the adjusting part 3 and the mounting part 4, and is intuitively fed back to the user through digital parameters, so that the user can accurately determine the position and angle between the mounting part 4 and the adjusting part 3, so that the insertion end of the microwave ablation needle can accurately and stably penetrate the tumor tissue in the human body, thereby improving the clinical physician's control accuracy of the tumor tissue position in the human body.

[0062] like Figure 1 - Figure 2 and Figure 4 As shown, in a specific implementation, the support ear is movably connected to the base 1 so that the support ear can move closer to or farther away from the base 1.

[0063] Specifically, in order to reduce costs and improve the maneuverability of the locator while improving the use effect of the locator, the support ear and the base 1 in the present application are preferably connected in a movable manner. In addition, after the support ear and the base 1 are connected in a movable manner, the device can also have a multi-angle adjustment effect, so that clinical physicians can use the device to guide and locate multiple parts to be treated on the same patient, quickly and effectively perform microwave ablation, reduce the patient's pain, shorten the operation time, and reduce the risk of surgery.

[0064] like Figure 1 - Figure 2 As shown, in a specific implementation, it also includes: a measuring device 8;

[0065] The measuring device 8 is arranged on the base 1 and is located on one side of the supporting ear. The extension direction of the measuring device 8 is perpendicular to the extension direction of the supporting ear, and the side of the measuring device 8 opposite to the supporting ear has a second scale; wherein, a side wall of the supporting ear opposite to the measuring device 8 is in contact with a side wall of the measuring device 8 having the second scale, and a side wall of the supporting ear can reciprocate along the extension direction of the measuring device 8.

[0066] Specifically, the measuring device 8 is used to measure the angle between the supporting ear and the base 1. The measuring device 8 has a second scale on the side opposite to the supporting ear. The second scale is used to indicate the parameters of the specific angle between the supporting ear and the base 1, and intuitively feeds back to the user through digital parameters, so that the user can accurately determine the position and angle between the supporting ear and the base 1, so that the insertion end of the microwave ablation needle can accurately and stably penetrate the tumor tissue in the human body, thereby improving the clinical physician's control accuracy of the tumor tissue position in the human body.

[0067] The extending direction of the measuring device 8 is perpendicular to the extending direction of the supporting ear. This structural design enables the device to have a multi-angle adjustment effect, so that clinical physicians can use the device to guide and locate multiple parts to be treated on the same patient.

[0068] The side walls of the measuring device 8 that are in contact with the supporting ear are smooth. This structural design allows one side wall of the supporting ear to reciprocate along the extension direction of the measuring device 8 when the supporting ear approaches or moves away from the base 1, thereby ensuring that the user can accurately determine the position and angle between the supporting ear and the base 1.

[0069] like Figure 1 - Figure 2 and Figure 4 As shown, in a specific implementation, rotating rods 9 are provided on both sides of the supporting ear opposite to each other, the rotating rod 9 on one side of the supporting ear is inserted into the base 1 below the measuring device 8 through the opening 2, and the rotating rod 9 on the other side of the supporting ear is inserted into the base 1 opposite to the measuring device 8 through the opening 2; wherein, the supporting ear is rotatably connected to the base 1 through the two rotating rods 9, so that one side wall of the supporting ear can reciprocate along the extension direction of the measuring device 8.

[0070] Specifically, the support ear is rotatably connected to the base 1 through two rotating rods 9, so that the support ear can flip back and forth relative to the base 1. The support ear and the rotating rod 9 are connected in a fixed connection manner, that is, the support ear and the rotating rod 9 are plugged in by interference fit. The side walls of the rotating rod 9 that are in contact with the base 1 are smooth, so that the rotating rod 9 inserted into the base 1 through the opening 2 can rotate relative to the base 1. The rotating rod 9 on one side of the support ear is inserted into the base 1 below the measuring device 8 through the opening 2, and the rotating rod 9 on the other side of the support ear is inserted into the base 1 opposite to the measuring device 8 through the opening 2. This structural design can facilitate the extension direction of the measuring device 8 to be perpendicular to the extension direction of the support ear, so that the device has a multi-angle adjustment effect, so that clinical physicians can use this device to guide and locate multiple parts to be treated on the same patient.

[0071] like Figure 1 - Figure 2 and Figure 4 As shown, in a specific implementation, it also includes: a pressing member 10;

[0072] The clamping piece 10 is arranged on the base 1 and is aligned with the measuring device 8. The clamping piece 10 is threadedly connected to the base 1. The clamping piece 10 reciprocates on the base 1 so that one end of the clamping piece 10 located inside the base 1 abuts against or moves away from the rotating rod 9 on the other side of the supporting ear, and maintains or releases the relative position relationship between the supporting ear and the base 1.

[0073] Specifically, the clamping member 10 is a bolt, which is threadedly connected to the base 1 and is used to lock or unlock so as to maintain or release the relative position relationship between the support ear and the base 1 .

[0074] When the bolt is rotated to the left or right, one end of the bolt located in the base 1 will approach the rotating rod 9 which is opposite to the measuring device 8 and located in the base 1, so that one end of the bolt cooperates with the inner wall of the base 1 to clamp the rotating rod 9, that is, one end of the bolt located in the base 1 abuts against the rotating rod 9 on the other side of the supporting ear, so that the bolt locks the supporting ear on the base 1 and maintains the relative position relationship between the supporting ear and the base 1;

[0075] When the bolt is rotated to the right or left, one end of the bolt located in the base 1 will move away from the rotating rod 9 located in the base 1 and opposite to the measuring device 8, so that the bolt releases the support ear locked on the base 1 and the support ear can be flipped back and forth relative to the base 1.

[0076] like Figure 1 - Figure 2 As shown, in a specific implementation, a notch 11 is provided on the peripheral side of the base 1 , and the notch 11 extends toward the opening 2 and is connected to the opening 2 ; wherein the supporting ear is located between the block and the notch 11 .

[0077] Specifically, the circumferential side of the surgical drape 12 has a communication opening, which extends toward the hole opening and is connected to the hole opening, wherein the communication opening and the notch 11 are located on the same straight line and are connected.

[0078] The setting of the notch 11 and the connecting port can facilitate the microwave ablation needle to be installed on the connected channel jointly formed by the block and the protrusion 6 through the notch 11 and the connecting port at the same time. Among them, when the clinician performs surgery on the shallow organs in the human body, the clinician can use his experience and hand feeling to insert the insertion end of the microwave ablation needle into the part to be treated of the human body through the opening 2 and the hole in turn. After the clinician uses the microwave ablation needle to treat the shallow organs in the human body, when the clinician needs to treat the deep organs in the human body, the clinician does not need to pull the microwave ablation needle out of the human body. The microwave ablation needle can be installed on the connected channel jointly formed by the block and the protrusion 6 through the notch 11 and the connecting port on the device, realizing the combination of the microwave ablation needle and the device, so that the clinician can guide and locate the part to be treated of the deep organs in the human body through the device, thereby improving the control accuracy of the clinician on the position of the tumor tissue in the human body and effectively solving the technical problems existing in the prior art. In addition, when the clinician is unable to accurately control the part to be treated in the human body, the clinician can combine the device with the microwave ablation needle through the notch 11 and the connecting port on the device, so that the clinician can guide and locate the part to be treated in the human body through the device, that is, the insertion end can pass through the opening 2 and the hole in turn to penetrate the part to be treated, thereby improving the control accuracy of the clinician over the position of the tumor tissue in the human body and effectively solving the technical problems existing in the prior art.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A locator, characterized in that: Comprising: A base (1), an opening (2) is provided in the middle of the base (1), an adjusting part (3) is provided on the base (1), and the adjusting part (3) is mounted on the opening (2); A mounting part (4), the mounting part (4) is movably connected to the adjusting part (3) so that the mounting part (4) can approach or move away from the base (1), the mounting part (4) is used for mounting a microwave ablation needle, and the piercing end of the microwave ablation needle can pierce into a part to be treated of the human body through the opening (2).

2. The locator according to claim 1, wherein The adjusting part (3) is a support ear in an arc shape, and a guide groove (5) is formed in the support ear along the extending direction of the support ear; Wherein, the support ear straddles the opening (2) and is connected to the base (1), and the guide groove (5) is movably connected to the mounting part (4).

3. The locator according to claim 2, wherein The mounting part (4) is a block in a U shape, a convex block (6) is arranged in the groove of the block, and the block can be clamped on the support ear through the groove so that the convex block (6) extends into the guide groove (5) and is in sliding fit with the guide groove (5). Wherein, the side walls in contact between the groove and the support ear and between the convex block (6) and the guide groove (5) are both smooth; The block and the convex block (6) are both provided with channels along a first direction, and the two channels are communicated with each other for guiding the piercing end of the microwave ablation needle to pierce into the part to be treated through the two communicated channels and the opening (2). The first direction is the direction from the support ear to the base (1).

4. The positioner according to claim 3, characterized in that Further comprising: A locking member (7), the locking member (7) is threadedly connected to one end of the convex block (6)背离 the block, and the locking member (7) is used to cooperate with the convex block (6) to lock or unlock the block on the support ear.

5. The locator according to claim 2, wherein The support ear is provided with a first scale.

6. The locator according to any one of claims 2-4, wherein The support ear is movably connected to the base (1) so that the support ear can approach or move away from the base (1).

7. The positioner according to claim 6, characterized in that Further comprising: A measuring device (8), the measuring device (8) is arranged on the base (1) and is located on one side of the support ear. The extending direction of the measuring device (8) is perpendicular to the extending direction of the support ear. The side of the measuring device (8) opposite to the support ear has a second scale; Wherein, the side wall of the support ear opposite to the measuring device (8) is in contact with the side wall of the measuring device (8) having the second scale, and one side wall of the support ear can reciprocate along the extending direction of the measuring device (8).

8. The locator according to claim 7, wherein Rotating rods (9) are arranged on opposite sides of the supporting ear, the rotating rod (9) on one side of the supporting ear is inserted into the base (1) below the measuring device (8) through the opening (2), and the rotating rod (9) on the other side of the supporting ear is inserted into the base (1) opposite to the measuring device (8) through the opening (2); The support ear is rotatably connected to the base (1) via two rotating rods (9), so that a side wall of the support ear can reciprocate along the extension direction of the measuring device (8).

9. The positioner according to claim 8, characterized in that Also includes: A pressing piece (10), the pressing piece (10) is arranged on the base (1) and is aligned with the measuring device (8), and the pressing piece (10) is threadedly connected to the base (1); The pressing member (10) reciprocates on the base (1) so that one end of the pressing member (10) located inside the base (1) abuts against or moves away from the rotating rod (9) on the other side of the supporting ear, and maintains or releases the relative position relationship between the supporting ear and the base (1).

10. The positioner according to claim 3, characterized in that The base (1) has a notch (11) on its circumferential side, the notch (11) extending in the direction of the opening (2) and communicating with the opening (2); Wherein, the supporting ear is located between the block and the notch (11).

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