Puncture positioning operation guiding device

Abstract

The utility model provides a puncture positioning operation guiding device which comprises an angle element with angle scales and a guiding element for guiding a puncture needle, the guiding element can rotate and move on the angle element, and the angle of the guiding element is adjusted through rotation of the guiding element. Therefore, the puncture needle can enter a target spot in a punctured main body according to the angle; the guide element has a fulcrum on the angle element, around which the guide element rotates. The guide assembly guarantees puncture accuracy, improves operation convenience, can be used for guiding, assembling and disassembling a surgical needle at the same time, greatly reduces the frequency of repeatedly confirming a needle inserting point position and needle inserting accuracy in an operation, and reduces pain of a patient.

Description

[0001] This application claims priority to the prior Chinese application, application number: 2023115197454, filing date November 15, 2023; all contents thereof are regarded as part of the present invention. Technical Field

[0002] The utility model belongs to the field of medical instruments, and specifically relates to a puncture positioning surgery guiding device. Background Art

[0003] In recent years, radiofrequency ablation (RFA) has been increasingly recognized by clinicians as a new, effective and minimally invasive treatment technology. Currently, radiofrequency ablation can be applied to a variety of solid tumors, including thyroid, lymphoma, liver cancer, lung cancer, kidney cancer, breast cancer and bone tumors. Remarkable results have been achieved in the treatment of primary and secondary liver tumors. Because of its minimally invasive, safe, repeatable, minimal damage to organ function and few complications, it has become an important means of comprehensive treatment of liver cancer and lung cancer.

[0004] Among them, lung nodules need to be preoperatively punctured and positioned before lung cancer surgery. However, the lack of a stable and reliable auxiliary stent greatly increases the difficulty of the doctor's surgery, making it impossible for the doctor to accurately insert the needle directly into the lesion. Multiple CT scans and multiple position adjustments are often required, which increases the risk of surgery and the patient's pain. Therefore, the problem of fixing the ablation needle, coaxial needle and biopsy needle during surgery usually becomes a major problem that plagues surgeons. The existing stents on the market are often accompanied by problems such as inability to reach a horizontal state or troublesome leveling, inconvenient operation, poor stability, inaccurate puncture, inability to remove the needle and inability to perform multi-needle ablation surgery.

[0005] In other methods, in addition to ablation surgery that requires inserting the ablation needle into a specific designated location, there are also some methods that hope to insert microneedles into specific locations in the human body for sampling, or other surgeries or functions, such as inserting puncture needles into lesions for sampling, or when performing minimally invasive surgery, it is also necessary to allow these microneedles or puncture needles to enter the exact location of the human body to reduce unnecessary trauma.

[0006] This requires providing a device that can guide these puncture needles to be easy to operate, accurately enter the designated position of the body, and be more precise. Utility Model Content

[0007] The present utility model provides a puncture positioning surgical guiding device, which works in cooperation with a base, a support rod and a guiding assembly. The guiding assembly ensures the accuracy of puncture, improves the operation convenience, can simultaneously act on the guiding and loading / unloading of surgical needles, greatly reduces the number of times of repeatedly confirming the needle insertion point and the needle insertion correctness during the operation, and reduces the pain of patients.

[0008] In order to solve the above problems, the technical solution adopted by the present utility model is as follows:

[0009] The present utility model provides a device for guiding a puncture needle, which is characterized in that it includes an angle element with angle scales and a guiding element for guiding the puncture needle. The guiding element can rotate on the angle element, and the angle of the guiding element is adjusted by relying on the rotation of the guiding element, so that the puncture needle can enter the target point in the subject to be punctured according to the angle. Here, the subject can be a human or a mammal, and the target point is a specific designated site in the human body, which can be a lesion, a nodule, a malignant nodule of a tumor, or any other place where the puncture needle can enter, such as a specific position in the spinal cord, etc.

[0010] In some ways, the guiding element has a fulcrum on the angle element, and the guiding element rotates around the fulcrum. The fulcrum is formed by the cooperation of the rotation shaft on the guiding element and the hole passing through the angle element, so that the guiding element can rotate around the fulcrum.

[0011] In some ways, the guiding element has two ends, one end is used to indicate the angle, and the other end is used to guide the puncture needle. Indicating the angle means aligning with the angle scales on the angle element, and the other end is used to guide the insertion path of the puncture needle. In some ways, the fulcrum is located between the two ends of the guiding element.

[0012] In some ways, the end of the guiding element for indicating the angle has an indicating needle, and the other end of the guiding element has a needle guiding groove. The indicating needle is set to locate the angle scales on the angle element, so that the needle guiding groove is positioned according to the angle. In some ways, the guiding element includes an element with a pointer and an element with a needle guiding groove. Among them, the element with the needle guiding groove can slide relative to the element with the pointer. This sliding is a longitudinal sliding along the guiding element, so that the sliding of the element with the needle guiding groove can be adjusted, and the relative position between the target insertion position and the needle guiding groove can be adjusted. In some ways, the element with the pointer and the element with the needle guiding groove are assembled to the angle element in a detachable manner, or the element with the pointer and the element with the needle guiding groove are assembled to each other in a detachable manner. In this way, it is convenient to assemble when needed, and it is also convenient to replace the indicating needle element and the element with the groove.

[0013] In some ways, the angle element includes an annular edge and an angular surface connecting the annular edges, the annular edge being provided with angular graduations, and the indicating needle being located on the annular edge for indicating the graduations; alternatively, the angular surface includes angular graduations, and the pointer is located within a window through which the angular graduations of the pointer on the angular surface can be observed. The window can also be located on the angle indicating element, and the pointer on the edge of the angle element and the pointer within the window can be used together to locate the angular graduations.

[0014] In some ways, the angular surface includes a sliding groove, and the guiding element includes a sliding shaft capable of sliding in the sliding groove. When it is necessary to fix the guiding needle element at the angle indicated by the indicating needle, the sliding shaft can slide in the sliding groove, and then the guiding needle element is fixed on the angle indicating element through the sliding shaft. Therefore, in some ways, the sliding groove is also formed on the angular surface, and the sliding groove is correspondingly arranged with the angular graduations. In this way, when the sliding rail slides, the angle indicated by the angle indicating element causes the entire guiding element to rotate together.

[0015] In some ways, one end of the sliding shaft is threadedly connected to the element with the pointer, and the other end has a nut. The element with the pointer is fixed on the angular surface through the nut, so that the element with the guiding needle groove is fixed at the specified angular position.

[0016] In some ways, in the device in any of the above embodiments, the device includes a positioning element. The positioning element is in the same plane as the upper surface of the guiding needle element, or a certain point on the positioning element is on a straight line with the end point of the guiding needle groove, or a certain point on the positioning element is on a straight line with the tip of the puncture needle in the guiding needle groove, or the projection of the end face of the positioning element and the projection of the end point of the guiding needle groove or the tip of the puncture needle are on the same straight line. In this way, the tip of the puncture needle can puncture along the plane of the CT section without deviating from the plane.

[0017] In some ways, it is characterized in that the positioning element is located at one end of the angle element, and the height of the positioning element is equal to the height of the element with the guiding needle groove. Or the height is equal to the height of the guiding needle groove, or the height is equal to the position of the puncture needle relative to the angular surface of the angle element.

[0018] In some ways, the device includes two positioning elements located at both ends of the guide pin element, or the guide pin element is located between the two positioning elements. In some ways, the end faces of the two positioning elements are in the same plane as the upper surface of the guide pin element, or a certain point on the two positioning elements is in a straight line with the end point of the guide pin groove, or a certain point on the two positioning elements is in a straight line with the tip of the puncture needle in the guide pin groove, or the projections of the end faces of the two positioning elements and the end point of the guide pin groove or the tip of the puncture needle are on the same straight line; or, a certain point of the two positioning elements forms a straight line, and the upper surface of the element with the guide pin groove, the end point of the guide pin groove or the projection of the needle tip of the puncture needle are on this straight line.

[0019] In some ways, the device further includes a level for adjusting the angle between the angle element and the horizontal plane. In some ways, the angle is perpendicular to the horizontal plane or the angle with the horizontal plane is 90 degrees.

[0020] A puncture positioning surgical guidance device includes a guiding assembly. The guiding assembly includes a connecting part and an adjuster. The adjuster includes an angle element and a guiding element for guiding a puncture needle that can rotate on an inclinometer. The angle element is provided with a first positioning point, where the first positioning point is fixed on the angle element, and a second positioning point moves as the angle element rotates. Further, a level is provided on the connecting part. Further, an arc-shaped empty groove is provided on the angle element. Further, the guiding device further includes a slidably mounted base and a support rod. The base includes a fixedly connected bottom plate and a guide rail outer cover. Further, a guide rail is provided inside the guide rail outer cover, and the support rod is connected to the guide rail. The support rod can rotate on the guide rail; the support rod is connected to the guide rail by bolts. When the bolts are tightened, the support rod is fixed on the guide rail. When the bolts are loosened, the support rod can rotate on the guide rail; preferably, the guide rail is a lockable guide rail, and a bellows protective cover is provided outside the guide rail. Further, the bottom plate is an arc-shaped bottom plate, and the radian of the arc-shaped bottom plate fits the CT table of the CT scanner. Further, the support rod is movably connected by at least one rotating pair. Preferably, the support rod is movably connected by four rotating pairs. Further, a universal ball head is provided at the end of the support rod, and a universal ball head sleeve matching the universal ball head is provided at the end of the connecting part.

[0021] The utility model has the following beneficial effects:

[0022] 1. Compared with conventional brackets on the market, the present utility model is provided with a level at the front end of the inclinometer to ensure that the needle insertion position is in a horizontal state after the inclinometer is fixed. Subsequently, the maximum tomographic plane of the lesion is scanned by a CT machine and projected onto the skin as a CT positioning line. The first positioning point in the inclinometer coincides with this CT positioning line, and the second positioning point coincides with the puncture point on the CT laser line, so as to ensure that the puncture is made at the largest lesion and the accurate measurement of the puncture point is guaranteed. In addition, the guiding buckle is provided with a plurality of puncture grooves of different specifications, which is convenient for puncture needles, ablation needles, coaxial needles and biopsy needles of different specifications to enter the needle; the puncture channel of the present application is formed by the combination of a puncture through hole and a guiding buckle, and the guiding buckle can be detached from the puncture guide rail, adopting a detachable structure, which is convenient for doctors to remove the needle and is conducive to the position adjustment of multi-needle ablation surgery and secondary needle insertion.

[0023] 2. The overall structure of the base of the present utility model is simple, easy to operate, and the product is stable. For multiple points and multiple lesions, the surgical problems that are difficult to be solved by a single ablation needle can be solved through guiding buckles of different specifications. It can guide and load and unload the surgical needles, and is convenient for the implementation of multi-needle ablation surgery by being repeatedly used in one operation; the present application avoids the limitations of conventional auxiliary brackets, improves the accuracy and convenience of doctors' intraoperative operations, and greatly reduces the number of times of repeatedly confirming the needle insertion point and the accuracy of needle insertion by the CT scanner during the operation.

[0024] 3. The present utility model is equipped with a lockable guide rail at the base, which can realize the lateral movement of the support rod and lock it at the selected position. The support rod is connected to the base, and the support rod can rotate and can also be adjusted in position up, down, front and back; moving the support rod can drive the guiding component to freely move to a specified position in a plane perpendicular to the bottom plate and then be locked, and the universal ball head is convenient for the adjuster to adjust the levelness. The inclinometer is provided with an arc-shaped empty groove, and the center of the arc-shaped empty groove coincides with the center of the inclinometer. There is a knob behind the scale needle, so that the angle indicating needle rotates along the arc-shaped empty groove to correspond to the required angle and can fix it. The puncture guide rail can rotate along with the scale needle and can also move up and down relative to the scale needle, so that the second positioning point completely coincides with the puncture point. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of a combined structure with an angle element for guiding puncture.

[0026] Figure 2 Exploded structure diagram of an angle element and a guiding element.

[0027] Figure 3 Schematic diagram of the guiding element.

[0028] Figure 4 Another angle schematic diagram of a guiding puncture needle with angle and distance.

[0029] Figure 5 A three-dimensional principle structure diagram for guiding a puncture needle during puncture.

[0030] Figure 6 A three-dimensional structure schematic diagram of an angle element with guiding puncture and the entire device.

[0031] Figure 7 A structure schematic diagram of the bottom plate.

[0032] Figure 8 An exploded schematic diagram of the bottom plate;

[0033] Figure 9 A structure schematic diagram of the support rod;

[0034] Figure 10 Taking a CT photo as a reference, a simulation structure schematic diagram of the puncture needle entering the target point at a certain angle. Specific implementation manner

[0035] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation manners. These descriptions only show how the present invention is implemented and cannot limit the specific scope of the present invention. The scope of the present invention is defined in the claims.

[0036] As Figures 1 to 6 shown, the present invention provides a device for guiding a puncture needle, which device includes an angle disk 501, and a movable guiding element 400 is arranged on the angle disk. The cooperation between the guiding element and the angle disk can guide the puncture angle of the puncture needle, making the angle at which the puncture needle penetrates into the human body more accurate without deviation. Here, the movement mainly means that the guiding element 400 can rotate on the angle disk. This rotation is mainly to rotate the guiding element to a specific angle, and then when the puncture needle is inserted from the guiding element, it has a specific angle. Specifically, when a certain external puncture needle enters a specific position in the human body, it is always desired that the puncture needle can enter the center position or a specified position of the lesion. Usually, the position of the lesion is shown by looking at the CT photo, and then the position relative to the lesion on the CT photo is calculated, and then the position of the lesion is calculated. Theoretically speaking, a general CT photo is perpendicular to the horizontal plane, and the puncture needle can just penetrate perpendicularly to the horizontal plane. In fact, it is not the case. This is because although the CT photo is perpendicular to the horizontal plane, for each CT, when the lesion is considered from a three-dimensional perspective, it is only a cross-section, with a horizontal plane, up and down based on the horizontal plane, and there is also another dimension. For example, if the X-axis is horizontal, the Z-axis is up and down, and there is also a Y-axis as another dimension, so as to have a three-dimensional spatial structure (as Figure 5 shown).

[0037] It is desired that the puncture needle reaches the specific position of the desired lesion accurately, and at the same time, the needle needs to enter at an accurate three-dimensional angle. In addition to this factor, when the puncture needle enters the human body, it is necessary that the entry path is free from bone obstruction or does not damage other organs. This necessarily requires selecting a specific position, and at the same time, it is desired that the position to reach the lesion is the shortest, bypassing bone obstruction or other organs. For example, there is a tumor tissue (or malignant nodule) (lesion) in the lung. The lung is located above the chest. It is desired to let the puncture needle reach this nodule for nodule tissue sampling, or drug release through the puncture needle, or ablation of the tumor, etc. Therefore, in the above situations, the puncture needle requires an angle. This angle can enter the human body and reach the specific lesion site, and the path is free from bone or other organ obstruction. Here, the lesion generally refers to a diseased part, such as a nodule or diseased tissue. Of course, it can also refer to normal tissue. Any specific position where the needle enters the human body can be included in the meaning of the lesion, which is a specific implementation example of the lesion. Here, the puncture needle can be a needle for performing surgery on the lesion, a micro needle for sampling, a needle for introducing drugs. Of course, it can also be a needle for tumor ablation. Any specific position where the needle penetrates into the human body belongs to an implementation example of the present utility model.

[0038] For example, Figure 5 As shown, it is a CT photo. It is desired that the tip of the puncture needle reaches the target position. This CT is perpendicular to the horizontal plane. In this way, it is desired that the puncture needle enters with an angle deviation of 15 degrees from the direction of the upper and lower Z axes, so that the central position can be reached. Therefore, as Figure 1 shown, the angle corresponding to the guiding element on the angle disk is at the 15-degree position. If the rotation direction is also to be considered, the guiding element has a fulcrum on the angle disk. This fulcrum is generally fixed. For example, Figure 2 in the case of, there is a fixed fulcrum 504 on the angle disk. The guiding element is fixed on this fulcrum. The guiding element rotates around the fulcrum, and the rotation direction is to rotate left and right along the angle disk, so as to reach the position with angle scales on the angle disk. In some ways, the position of the fulcrum is substantially on the same straight line as the 0-degree position on the angle disk. This 0-degree position can be considered as a straight line perpendicular to the horizontal plane. Combining Figure 10 can determine the specific rotation angle and direction. When it is selected to insert the puncture needle from a specific position on the left side of the target, let the guiding element rotate left on the angle disk, and let one end of the guiding element align with the 15-degree angle. If it is selected to insert the puncture needle from a position on the right side of the target, let the guiding element rotate right on the angle disk, and let one end of the guiding element align with the 15-degree angle.

[0039] In some ways, the guiding element has two endpoints. One endpoint is used to align with the angular scale on the angle dial 501, and the other endpoint is where the puncture needle tip enters the body. For example, as Figure 3 shown, the guiding element 400 has an endpoint 4011 which is used to align with the angular scale on the angle dial for indicating the angle, and the other endpoint 4025 is where the tip of the puncture needle is inserted. Generally, the two endpoints 4011 and 4025 are on the same straight line. In this way, the angle at which the puncture needle enters the body is the same as the indicated angle. As Figure 1 shown, at this time, the pointer of the guiding element aligns with 0 degrees, and the endpoint 4025 is also at the 0-degree position. In some ways, a guiding groove 4024 is provided in the extending direction of the endpoint 4025, and the puncture needle is arranged in the guiding groove and then inserted into the human body from the groove 4024. In some ways, the central position of the longitudinal axis direction of the guiding groove 4027 is on the same straight line as the two endpoints 4011 and 4025.

[0040] In some ways, the guiding element and the angle dial are combined in a detachable manner. When needed, the guiding element can be combined with the angle dial, and when they need to be separated, they can be separated from the angle dial. This facilitates the installation of guiding elements with different specifications on one angle dial. For example, when the thickness of the puncture needle is different, the size of the guiding groove is also different, and it is necessary to replace the guiding groove with a suitable size. In some ways, a fulcrum hole 504 is provided on the angle dial as the fixed point for the rotation of the guiding element, and a support shaft 4016 is provided on the guiding element, and this shaft passes through the fulcrum hole on the angle dial. For convenient installation, an installation hole 505 is opened on the angle dial, and the diameter of this installation hole is larger than the diameter of the support shaft 4016. Let the nut 4017 of the support shaft pass through the installation hole 405 and then slide into the fulcrum hole 504. The diameter of the nut 4017 is larger than the diameter of the fulcrum hole 504, so that the shaft 4016 can rotate in the fulcrum hole but its position does not move. In some ways, a sliding track 503 is provided on the angle dial, and the setting method of this sliding track is the same as that of the angular indication scale. And on the guiding element, there is a sliding shaft 301, and the sliding shaft 301 has a nut 303. One end of this sliding shaft is rotationally fixed to the screw hole 4012 on the guiding element through a thread, and the other end has a diameter of the nut larger than the width of the sliding rail, so that the guiding element can slide in the sliding rail. Of course, the purpose of sliding is to make the guiding element at a required angle. This nut has two functions. One is for convenient installation (facilitating disassembly and installation). In addition, after the angle is selected, when the guiding element is rotated to the specified angle, the nut can be rotated to fix the guiding element at the specified angular position without moving, and then the puncture needle is arranged in the guiding groove to facilitate the puncture action.

[0041] In some ways, the guiding element 400 includes an angle indicating element 401 and a needle guiding element 402 for guiding the acupuncture needle to penetrate. The needle guiding element 402 can be longitudinally slidably engaged with the angle indicating element 401. In some ways, the needle guiding element 402 has an end point 4025 where the acupuncture needle penetrates and a needle guiding groove 4024, while the angle indicating element includes an indicating needle 4018 which has an indicating head 4011 for indicating the angle scale on the angle dial.

[0042] In some ways, the angle dial has angle scales, and the movable guiding element can move according to the angle scales to reach the appropriate angle. As Figure 1 shown, the guiding element 400 is at the 0-degree position, indicating that the guiding element 400 is at the 0-degree position, and the acupuncture needle is also inserted into the human body from the 0-degree position. The 0-degree at this time can actually be understood as the angle perpendicular to the horizontal plane. The horizontal plane here is a hypothetical plane. Angle scales of 90 degrees are respectively set on both sides of the 0-degree on the angle dial. This setting can be an angle setting of every 1 degree, or every 2 degrees or 3 degrees, or even 10 degrees. This can be set according to different requirements. In short, the angle dial 501 is provided with angle-indicating scales, and these scales indicate the angle relationship between the guiding element 400 and the horizontal plane. For example, if it is desired that the guiding element 400 has a 30-degree relationship with the horizontal plane, the needle guiding element 402 can be rotated to the 30-degree position. Relative to the coordinate axes Y-Z axes, the 30 degrees are respectively at the position in the first quadrant 31 and the angular position in the fourth quadrant 30. If the guiding element 400 has a 30-degree angle with the horizontal plane, the acupuncture needle guided by the guiding element 400 also penetrates into the human body at a 30-degree angle. Of course, the positions where the acupuncture needles inserted from the 30-degree position in the first quadrant or the 30-degree position in the fourth quadrant enter the human body may be the same position, which is set for operational convenience.

[0043] In some ways, the guiding element 400 can rotate on the angle dial. This rotation is based on different angles, and the function of the rotation is to align with the angle scales on the angle dial to find the required angle. More specifically, the guiding element has a needle guiding groove 4024, and the acupuncture needle is inserted into the groove, and then inserted into the human body relying on the guidance of the groove. Therefore, making the guiding element 400 have different angles with the horizontal plane essentially means making the central position of the needle guiding groove 4024 form the desired angle with the horizontal plane. Therefore, a scale indicating head 4018 is provided on the guiding element 400, and the tip 4011 of this scale indication is on the same straight line as the horizontal central position of the needle guiding groove 4024. In this way, the scale indicated by the tip represents the angle formed by the needle guiding groove 4024 and the horizontal plane.

[0044] As Figure 2As shown, the angle dial 500 has a main body 502 of the dial and an edge 501 surrounding the main body of the dial. The edge 501 is above the plane 502 of the main body. There are angular scales on the edge 501, and there are also angular scales near the outer surface of the main body surface 502. The scales on the edge 501 are arranged corresponding to the scales of the main body plane. The edge has a height from the main body plane. In some ways, the guiding element 400 includes two components. One is the angle indicating element 401, and the other is the element 402 with a guide pin groove 4024. The element 402 with the guide pin groove 4024 can slide up and down on the angle indicating element 401, and the angle alignment element 401 rotates circumferentially on the angle dial to select an appropriate angle. The angle indicating element 401 has a thickness 4013, and the angle indicating needle 4018 is located above the angle indicating element, so that the lower surface 4020 of the pointer 4018 is above the edge 501, and it can be close to the edge but does not affect the rotation of the pointer 4018. In this way, the angle indicating element 401 can be slid by hand to drive the rotation of the pointer 4018, and then positioned at a specific angle, such as aligning with the angular scale on the edge 501. The guide pin element 402 is arranged above the angle indicating element 401 and slides through the chute. Therefore, a chute is provided on the guide pin element 402, and the two edges 4021, 4022 of the angle indicating element 401 serve as slide rails to allow the guide pin element 402 to slide thereon. One function of being able to slide is that when the puncture needle needs to be inserted through the guide pin element 402, the needle can be smoothly inserted into the guide pin groove 4023 and directly inserted into the human body. It can be understood that the angles on the angle dial can have angular scales on the edge and scales on the main body of the dial, and any one of them can be used to achieve the positioning of the angle of the guiding element. For example, as Figure 3 As shown, a window 4015 is opened on the angle indicating element 401. Through this window, the angular scale on the main body 502 can be seen. It is also possible to set an element 40 for indicating the angle on the window, and this element is used to determine the angle. In a preferred way, whether it is the element 40 for indicating the angle or the angle indicating needle 4018 located thereon, their central positions are kept in a straight line with the guide pin groove 4024. These are all optional solutions.

[0045] In some embodiments, a cover sheet 700 is also provided on the needle guide element 402, which can slide on the needle guide element 402 and be assembled in a detachable manner. In this way, the cover sheet 700 and the needle guide groove 4024 are combined into a channel, which allows the puncture needle to pass through and guide the puncture needle through the needle guide groove 4024 to be inserted into the human body. In this way, the puncture needle is prevented from leaving the needle guide groove during puncture, and its direction is kept consistent. It can be understood that the puncture needle is generally manually given a puncture force to penetrate the human body. Due to individual differences in operation, such a needle guide groove or channel is used to allow the angle of the puncture needle to remain basically unchanged and enter the human body according to the set route.

[0046] The above methods are all based on a plane to adjust and indicate the angle, but in fact, the location of the lesion in the human body is a three-dimensional structure, such as Figure 5 As shown, the position of the lesion is a position in a three-dimensional structure, for example, YXZ represents different directions. Generally, CT photos are selected perpendicular to the horizontal plane, and the horizontal plane here generally refers to the plane formed by XY. In order to make the angle element or the guide element perpendicular to the horizontal plane, a water meter is also provided on the device to adjust the relationship between the angle element and the plane XY, generally to make the angle element perpendicular to the plane XY and to be in the same plane as the position of the photo taken by CT. Therefore, in some embodiments, the device also includes a level 200, which is used to adjust the angle between the angle element 500 and the horizontal plane XY. The purpose of adjusting the angle is to make the angle element and the surface taken by CT in the same plane, usually to make the angle element also perpendicular to the horizontal plane, such as the plane where XZ is located. The CT photo here is a photo obtained after the CT device scans the human body. In the CT photo, the lesion or the target point to be punctured is not in the center position and may be offset, so the angle of the guide element needs to be adjusted by the angle scale on the angle.

[0047] Even if the angle element is in the same plane as the plane of the CT scan, due to the mechanical thickness of the guiding element 400 itself, including the depth of the guide needle groove and the mechanical thickness of the guide needle element with the guide needle groove, in this way, although theoretically the angle element can be in the same plane as the CT scan position, sometimes it is not accurate. After all, adjusting with a leveling instrument has errors and is not easy to operate. Theoretically, when the angle element is in the same plane as the plane of the CT scan, the insertion position of the tip of the puncture needle is also in the same plane as the CT scan plane. For the same three-dimensional tumor or lesion, CT can take multiple photos, and each CT photo is a cross-section of the lesion. To accurately insert the tip of the needle into the position of the lesion, for example, into the center of the lesion, in one method, a positioning element 900 is provided on the device, and the end 903 of the positioning element is in the same plane as the tip of the puncture needle, or the end is in the same plane as the upper surface of the guide needle element 402. In this way, when performing the puncture, the end 903 of the positioning element 900 is at one end of the line where the CT photo is located, and the projection of the surface of the guide needle element 402 is also on the line where the CT photo is located, ensuring that when the puncture needle is inserted into the human body, it is inserted from the plane of the CT photo. As Figure 5 shown, there is a theoretical CT photo 1, with a cross-section of the position 2 of a target on the CT photo, and CT has a line 3, which is generally marked on the skin of the human body and can be marked with a fluorescent line. This marked line indicates the plane where the position of a CT photo is located. During the operation, the projection of the surface of the positioning end 903 falls on this marked line 3, and the projection of the outer surface 4026 of the guide needle element 402 also falls on this marked line 3. In this way, the projection of the top 4025 of the guide needle groove of the guide needle element can also be substantially on the marked line 3. In this way, it is better to insert the tip of the puncture needle 5 into the human body from the marked line 3.

[0048] In some ways, the positioning element 900 extends outward from the surface 502 of the angle disk body, extending perpendicularly outward from the surface 502. And the extended height is substantially at the same horizontal plane as the outer surface 4026 with the guide pin groove. Or, when the puncturing needle is located in the guide pin groove 4024, the extended height is at the same horizontal plane as the highest position of the puncturing needle. In such specific operations, generally, there are positioning lines or marking lines 3 on the human body. The way to make the end 903 of the positioning element 900 be in the same plane as the surface 4026 of the guide pin element 402 is to make the projection of the end face 903 of the positioning element 900 be on the marking line 3, and make the projection of the upper surface 4026 of the guide pin element be on the marking line, and rely on the previously made positioning line to determine the direction, then it can be accurately inserted into the required specified position. This is because, although the angle element 401 can set the angle for inserting the guiding element 400, and the level instrument is to keep the guide pin element 402 in the same plane as the entering path. However, the guide pin element 402 has its own thickness, and the guide pin groove 4024 has different depths, and the puncturing needle 5 also has its own mechanical dimensions. To ensure that the puncturing needle 5 enters the human body from the cross-section of the CT image without deviation, the positioning element 900 is needed to adjust so that the puncturing needle 5 enters from the cross-section of the CT image. By using the positioning element 900, it is not necessary to make the angle element 401 fully contact the human skin. And in actual operations, the human body surface is not horizontal and has height differences. When the marking line is marked on the human body surface, it is also undulating. In this way, if the connecting line between the end face 903 of the positioning element 900 and the surface of the guide pin element 402 or the end point 4025 of the guide pin groove coincides with the marking line, then the puncturing needle 5 can be well inserted into the human body from the plane of the CT image represented by the marking line 3. In fact, it is to use the method of determining a straight line by two points. If this straight line coincides with the scribed line or marking line 3, it can ensure that the tip of the puncturing needle 5 is inserted in the plane of the scribed line 3, and the scribed line 3 is a scanned line of a CT image. Of course, in some ways, two positioning elements 900 and 9002 can be set on both sides of the guide pin element 402, with the guide pin element 402 in the middle of the two positioning elements 900. The end faces 903 of the two positioning elements 900 or any other specified position can substantially form a straight line with the end point 4025 of the guide pin groove. In fact, this is to use the two positioning elements 900 to specifically position the tip of the guide pin to be in a straight line with the two positioning elements. During specific operations, as long as the projections of the end faces of the two positioning elements or the scales thereon are on the marking line, then naturally the projection of the end point 4025 of the guide pin groove 4024 will also be on the marking line 3, which ensures that the puncturing needle can be inserted into the human body from the plane of the marking line. Any scale or any marking on the so-called positioning element 900 can be used as long as the marked point and the end point 4025 of the guide pin groove form a straight line.

[0049] As Figures 6 to 9 shown, this embodiment provides a puncture positioning surgical guidance device, which includes a base 101, a support rod 102, and a guiding component 103 connected in sequence. The base includes a fixedly connected bottom plate 1011 and a guide rail outer cover 1012. The bottom plate is an arc-shaped bottom plate, and the arc fits the arc of the CT machine bed on the CT scanner, facilitating placement and the patient's lying position. A guide rail is provided inside the guide rail outer cover, and a support rod is connected to the guide rail through a support rod connecting piece 1014. The support rod is connected to the support rod connecting piece by bolts and is arranged on the guide rail. The support rod can rotate on the guide rail, and the support rod connecting piece fits the guide rail without inclination. The guide rail 1015 is a lockable guide rail, and an accordion protective cover 1013 is provided outside the guide rail. The base can support the entire guiding device, and the support rod can move along with the sliding of the guide rail;

[0050] As Figure 9 shown, the support rod 102 is movably connected by at least one rotating pair 204. This embodiment is provided with four rotating pairs. A connecting rod base 201 is provided at the bottom of the support rod. One end of the connecting rod base 201 is fixedly connected to the support rod connecting piece 1014, and the other end is pin-connected to the connecting rod 202 to form a rotating pair. A universal ball head 203 is provided at the rotating pair at the end of the support rod, and a universal ball head sleeve matching the universal ball head 203 is provided at the end of the connecting part, and the two are connected by interference fit;

[0051] In actual application, the lesion is scanned by a CT scanner to find the maximum tomographic plane of the lesion. The maximum tomographic plane is projected onto the skin surface as the CT positioning line 3, and the target point is confirmed on this section. Subsequently, the puncture point is selected by avoiding the ribs and blood vessels. The line connecting the puncture point and the target point is the in-vivo positioning line, that is, the puncture path of the puncture needle. Furthermore, the needle insertion angle (relative to the center of the earth) and the needle insertion depth are confirmed. The guiding device is adjusted for puncture according to the puncture point and the puncture angle. The in-vivo positioning line extends to the outside of the body as the CT laser line emitted by the CT scanner.

[0052] As Figure 5 , shown in Fig. 10, if the puncture point on the patient's skin surface is assumed as the origin to establish an XYZ three-dimensional coordinate system, then the plane of the patient's skin surface is the XY plane (or the bottom plate is the XY plane), and the Z axis is perpendicular to the patient's skin surface (or perpendicular to the bottom plate). The specific puncture operation steps are as follows:

[0053] (1). The patient lies on the bottom plate 1011, and the bottom plate 1011 is placed on the CT bed. The support rod 102 slides along the Y axis on the guide rail 1105. After sliding, the guide rail 1105 is locked to achieve rough adjustment of the position of the support rod 102. In this process, the Y-axis coordinates of the support rod 102 and the guiding component 103 are adjusted (that is, the guiding component is adjusted to the maximum tomographic plane of the lesion);

[0054] (2) Rotate the rotating support rod 102 for fine adjustment in the Y-axis direction, and then adjust each rotating pair 204 on the support rod 102, thereby adjusting the position of the guiding component 103 in the XZ plane. In this process, the coordinates of the guiding component 103 in the X-axis and Z-axis directions are adjusted (i.e., the guiding component is adjusted above the puncture point, and the first positioning point 900 is adjusted to be located on the CT positioning line).

[0055] (3) Rotate the universal ball head 203, and compare with the level to ensure that the angle dial 500 is in a horizontal state and is perpendicular to the plane defined by the XZ axis of the horizontal plane.

[0056] (4) Rotate the knob, and rotate the scale needle to the target angle, such as 25 degrees, according to the CT image. Move the puncture guide rail 4024 up and down so that the second positioning point 4025 coincides exactly with the puncture point. At this time, the end face of the first positioning point 900 and the projection of the second positioning point 9002 are both on the CT laser line, and the first positioning point is on the CT positioning line on the skin surface. At this time, select the guiding buckle or cover plate 700 according to the needle insertion specification. In this embodiment, the puncture needle 5 is selected, so the guiding buckle with the puncture needle aperture is selected. Slide the guiding buckle through the guiding buckle fixing groove and the sliding mount to the puncture guide rail 4024, and then the puncture needle 5 enters the needle along the puncture through hole until it reaches the target point.

[0057] During the above process, the top guiding buckle 700 of the puncture through hole plays a fixing role to ensure the accuracy of needle insertion. When an ablation needle or biopsy needle needs to be used, the guiding buckle can be detached and replaced with a guiding buckle with an aperture matching the target needle for multiple positioning and needle insertion.

[0058] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. A puncture positioning surgical guide device, characterized in that: It includes an angle element with an angle scale and a guide element for guiding the puncture needle, wherein the guide element can rotate on the angle element, and the angle of the guide element is adjusted by the rotation of the guide element, so that the puncture needle can enter the target point in the punctured body according to the angle; The guide element has a fulcrum on the angle element, and the guide element performs a rotational movement around the fulcrum.

2. The puncture positioning surgical guide device according to claim 1, characterized in that: The guiding element has two ends, one end of which is used to indicate an angle, and the other end of which is used to guide the puncture needle.

3. The puncture positioning surgical guide device according to claim 2, characterized in that: The fulcrum is located between the two ends of the guiding element.

4. The puncture positioning surgical guide device according to claim 3, characterized in that: The guiding element has an indicating needle at one end for indicating the angle, and a guiding needle slot at the other end of the guiding element. The indicating needle is configured to locate the angle scale on the angle element, so that the guiding needle slot is located according to the angle.

5. The puncture positioning surgical guide device according to claim 4, characterized in that: The guiding element comprises an element with a pointer and an element with a guide needle groove, wherein the element with the guide needle groove can slide relative to the element with the pointer.

6. The puncture positioning surgical guide device according to claim 5, characterized in that: The element with the pointer and the element with the needle guide groove are assembled in a detachable manner relative to the angle element, or the element with the pointer and the element with the needle guide groove are assembled in a detachable manner.

7. The puncture positioning surgical guide device according to claim 6, characterized in that: The angle element includes an annular edge and an angle surface connecting the annular edge, the annular edge has an angle scale, and the indicator needle is located on the annular edge for indicating the scale; or, the angle surface includes an angle scale, and the pointer is located in a window, and the angle scale of the pointer on the angle surface can be observed through the window.

8. The puncture positioning surgical guide device according to claim 7, characterized in that: The angle surface includes a slide groove, and the guiding element includes a slide shaft that can slide in the slide groove. When the guide needle element needs to be fixed at the angle indicated by the indicating needle, the slide shaft can slide in the slide groove, and then the guide needle element is fixed on the angle indicating element through the slide shaft.

9. The puncture positioning surgical guide device according to claim 8, characterized in that: One end of the sliding shaft is threadedly connected to the component with the pointer, and the other end is provided with a nut, through which the component with the pointer is fixed on the angle surface, thereby fixing the component with the guide needle groove at a specified angle position.

10. The puncture positioning surgical guide device according to any one of claims 1 to 9, characterized in that: The device includes a positioning element, which is in the same plane as the upper surface of the guide needle element, or a point on the positioning element is in a straight line with the end point with the guide needle groove, or a point on the positioning element is in a straight line with the needle tip of the puncture needle in the guide needle groove, or the projection of the end face of the positioning element and the projection of the end point with the guide needle groove or the needle tip of the puncture needle are in the same straight line.

11. The puncture positioning surgical guide device according to claim 10, characterized in that: The positioning element is located at one end of the angle element, and the height of the positioning element is equal to the height of the element with the guide needle groove.

12. The puncture positioning surgical guide device according to any one of claims 1 to 11, characterized in that: The device comprises two positioning elements, the two positioning elements are located at two ends of the needle guide element, or the needle guide element is located between the two positioning elements.

13. The puncture positioning surgical guide device according to claim 12, characterized in that: The end faces of the two positioning elements are in the same plane as the upper surface of the guide needle element, or a certain point on the two positioning elements is in a straight line with the end point of the guide needle groove, or a certain point on the two positioning elements is in a straight line with the needle tip of the puncture needle in the guide needle groove, or the projection of the end faces of the two positioning elements and the projection of the end point of the guide needle groove or the needle tip of the puncture needle are in the same straight line; or a certain point of the two positioning elements forms a straight line, and the upper surface of the element with the guide needle groove, the projection of the end point of the guide needle groove or the needle tip of the puncture needle are in the straight line.

14. The puncture positioning surgical guide device according to any one of claims 1 to 13, characterized in that: The device also includes a level, which is used to adjust the angle between the angle element and the horizontal plane.

15. The puncture positioning surgical guide device according to claim 13, characterized in that: The angle is perpendicular to the horizontal plane or is 90 degrees to the horizontal plane.

Images