A CT-guided puncture auxiliary positioning device

Abstract

The present invention relates to a puncture auxiliary positioning device under CT guidance, characterized in that it comprises a fixing belt, a panel located above the fixing belt, a protractor arranged on the panel, and a needle insertion catheter, wherein two mutually perpendicular levels are arranged on the panel, the fixing belt is connected to the panel through a plurality of length-adjustable adjustment rods, and the needle insertion catheter is connected to the protractor so that one end of the needle insertion catheter can rotate along the outer circumference of the protractor around the outer circumference center of the protractor to achieve a change in the inclination angle of the needle insertion catheter. The device can improve the accuracy of the puncture angle, thereby improving the efficiency and success rate of the puncture.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a puncture auxiliary positioning device under CT guidance. Background Art

[0002] The incidence of lung diseases is getting higher and higher. Common lung diseases in clinical practice include lung infection, benign lung tumors, malignant lung tumors, etc. In order to determine the type of disease and choose a reasonable treatment plan, percutaneous lung puncture is usually used in clinical practice to assist diagnosis or treatment. At present, when medical staff perform CT-guided lung puncture biopsy, they first use metal materials as references on the surface of the puncture target. Through CT scanning, according to the relationship between the lung lesions and the metal materials on the scanned image, the puncture point, puncture angle and puncture depth are determined. In this way, the puncture point and puncture depth are easy to grasp based on CT, but the puncture angle can only be based on personal experience. The operator adjusts the needle manually by feeling during the insertion process. Especially when puncturing smaller or deeper lesions, if the needle angle is slightly deviated, the puncture needle must be withdrawn and adjusted before re-puncturing and CT scanning is performed again to determine the accuracy of the needle position. This can easily lead to puncture failure and increase the probability of intraoperative complications, while increasing the patient's pain. Therefore, it is necessary to design a puncture auxiliary positioning device to improve the accuracy of the needle insertion angle.

[0003] Although auxiliary positioning devices such as protractors have begun to be used clinically to improve the accuracy of the needle insertion angle, the protractor cannot be placed horizontally during operation, and it cannot correspond to the angle presented by CT, so the improvement in clinical use effect is not obvious. Summary of the invention

[0004] The main purpose of the present invention is to provide a CT-guided puncture auxiliary positioning device which can improve puncture accuracy and has a simple structure and convenient operation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a CT-guided puncture auxiliary positioning device, characterized in that it includes a fixing belt, a panel located above the fixing belt, a protractor arranged on the panel, and a needle insertion catheter, the panel is provided with two mutually perpendicular levels, the fixing belt and the panel are connected by a plurality of length-adjustable adjustment rods, the needle insertion catheter is connected to the protractor so that one end of the needle insertion catheter can rotate along the outer circumference of the protractor around the outer circumference center of the protractor to achieve a change in the inclination angle of the needle insertion catheter.

[0006] Furthermore, the panel is rectangular, and there are four adjusting rods distributed at the four corners of the panel, wherein one level is arranged parallel to the long side of the panel and the other level is arranged parallel to the wide side of the panel.

[0007] Furthermore, the panel is provided with a slide groove arranged along the long side direction of the panel, a slide bar that can slide in the slide groove is clamped in the slide groove, and the protractor is fixedly arranged on the slide bar.

[0008] Furthermore, the device also includes a rectangular frame arranged perpendicular to the protractor, the protractor has an arc groove arranged along the outer circumference of the protractor, one end of the rectangular frame is rotatably connected to the center of the outer circumference of the protractor and the other end is limited by the arc groove and can move along the arc groove, the rectangular frame is rotatably connected to two fixed rods of equal length on the side away from the protractor, and the two ends of the needle insertion catheter are respectively rotatably connected to the lower ends of the two fixed rods.

[0009] Furthermore, a through hole is provided at the center of the outer circumference of the protractor, the edges of the corresponding ends of the rectangular frame extend outward and extend into the through hole, and a slider is provided on the edge of the rectangular frame close to the protractor, and the slider is clamped in the arc groove and can slide in the arc groove.

[0010] Furthermore, the adjusting rod includes a first threaded rod arranged on a fixing belt, a second threaded rod arranged on a panel, and an adjusting cylinder threadably connected to the free ends of the first threaded rod and the second threaded rod. During the rotation of the adjusting cylinder, the first threaded rod and the second threaded rod are synchronously rotated in or out relative to the adjusting cylinder.

[0011] Furthermore, the fixing belt includes an upper layer for setting the first threaded rod and a lower layer that can be adhered to the patient's chest skin, and the upper layer and the lower layer are adhered and fixed by hook and loop fasteners.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] By setting two vertical levels on the panel, the panel can be adjusted to a horizontal position by adjusting four adjustment rods, so that the angle formed by the path of the puncture needle through the puncture point to the target position and the panel is consistent with the angle measured by the CT scan, thereby guiding the puncture needle to puncture quickly and accurately, improving the accuracy and success rate of puncture, reducing the occurrence of complications, bringing convenience to medical staff in clinical operations, and alleviating pain for patients; by setting slide grooves and slide bars, the needle insertion catheter can be easily adjusted to align the needle insertion catheter with the puncture position, thereby improving operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the auxiliary positioning device of the present application.

[0015] Figure 2 for Figure 1 Schematic diagram of the front view structure.

[0016] Figure 3 for Figure 1 Schematic diagram of the right view structure.

[0017] Figure 4 for Figure 1 Schematic diagram of the top view structure. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0020] Figures 1 to 4 Shown is a schematic structural diagram of a preferred embodiment of the present application. As shown in the figure, the CT-guided puncture auxiliary positioning device includes a fixing belt 1, a panel 2 located above the fixing belt 1, a protractor 3 provided on the panel 2, and a needle insertion catheter 4. The puncture needle (not shown in the figure) passes through the needle insertion catheter 4 for puncture sampling. Two mutually perpendicular levels 5 are provided on the panel 2. The fixing belt 1 and the panel 2 are connected by a plurality of length-adjustable adjustment rods 6. The needle insertion catheter 4 is connected to the protractor 3 so that one end of the needle insertion catheter 4 can rotate along the outer circumference of the protractor 3 around the outer circumference center of the protractor 3 to achieve a change in the inclination angle of the needle insertion catheter 4.

[0021] Specifically, the panel 2 is rectangular, and there are four adjusting rods 6 distributed at the four corners of the panel 2 . One level 5 is arranged parallel to the long side of the panel 2 , and another level 5 is arranged parallel to the wide side of the panel 2 .

[0022] In order to facilitate the adjustment of the position of the needle insertion catheter 4 so that its lower end is aligned with the needle insertion position, the panel 2 is provided with a slide groove 21 arranged along the long side direction of the panel 2, and a slide bar 22 that can slide in the slide groove 21 is clamped in the slide groove 21. The protractor 3 is fixed on the slide bar 22. At the same time, in order to prevent the slide bar 22 from slipping out of the slide groove 21, fixing clips 23 that can limit the slide bar 22 are provided at both ends of the panel 2.

[0023] In this embodiment, the device also includes a rectangular frame 7 arranged perpendicular to the protractor 3, and the protractor 3 has an arc groove 31 arranged along the outer circumference of the protractor 3. One end of the rectangular frame 7 is rotatably connected to the center of the outer circumference of the protractor 3, and the other end is limited by the arc groove 31 and can move along the arc groove 31. The rectangular frame 7 is rotatably connected to two fixed rods 8 of equal length on the side away from the protractor 3, and the two ends of the needle insertion catheter 4 are rotatably connected to the lower ends of the two fixed rods 8 respectively, so that the fixed rods 8, the corresponding sides of the rectangular frame 7 and the needle insertion catheter 4 form a parallelogram, and the angle between the needle insertion catheter 4 and the panel 2 is consistent with the angle between the rectangular frame 7 and the panel 2, so that the angle of the needle insertion catheter 4 is more convenient to adjust.

[0024] Specifically, a through hole 32 is provided at the center of the outer circumference of the protractor 3, and the edge of the corresponding end of the rectangular frame 7 extends outward and extends into the through hole. A slider 71 is provided on the edge of the rectangular frame 7 close to the protractor 3. The slider 71 is clamped in the arc groove 31 and can slide in the arc groove 31. In this embodiment, the arc groove 31 is a through groove, and the slider 71 is a screw rod provided on the corresponding side of the rectangular frame 7. The screw rod passes through the arc groove 31 and a limit nut is provided on the free end of the screw rod. In this embodiment, the fixed rod 8 is provided in a length-adjustable form, and the length can be adjusted by the combination of a threaded rod and a sleeve, which is convenient for adjusting the height of the needle catheter 4 and more convenient for aligning the puncture needle with the puncture position.

[0025] During use, the slider 71 is slid in the arc groove 31, and the tilt angle of the rectangular frame 7 will change. The tilt angle of the needle insertion catheter 4 will change with the tilt angle of the rectangular frame 7, that is, the angle between the needle insertion catheter 4 and the panel 2 changes, thereby achieving angle adjustment during puncture by the puncture needle. It should be noted that the angle adjustment range of the rectangular frame 7 is 0° to 90°. If the needle insertion angle exceeds 90°, the fixing belt 1 needs to be tied to the patient's body in another direction.

[0026] As a preferred embodiment, the adjusting rod 6 includes a first threaded rod 61 arranged on the fixing belt 1, a second threaded rod 62 arranged on the panel 2, and an adjusting cylinder 63 threadedly connected to the free ends of the first threaded rod 61 and the second threaded rod 62. By coordinating the thread directions on the first threaded rod 61 and the second threaded rod 62 with those on the adjusting cylinder 63, during the rotation of the adjusting cylinder 63, the first threaded rod 61 and the second threaded rod 62 are synchronously rotated in or out relative to the adjusting cylinder 63.

[0027] In this embodiment, the fixing belt 1 includes an upper layer for setting the first threaded rod 61 and a lower layer that can be attached to the patient's chest skin, and the upper layer and the lower layer are attached and fixed by a hook-and-loop fastener. During use, the upper layer and the first threaded rod 61, the panel 2, the protractor 3 and other components arranged thereon can be reused, and the lower layer is a disposable tape made of a medical soft material. After being used on a patient, the lower layer can be replaced and used on another patient.

[0028] The following is an example of lung puncture to illustrate the use of the device:

[0029] First, perform a CT scan on the patient, determine the puncture position and make markings, tie the fixing belt 1 to the patient's chest and align the needle catheter 4 with the markings. Of course, the needle catheter 4 can be set close to the fixing belt 1 in the horizontal direction, so that when the edge of the fixing belt 1 fits the markings, the needle catheter 4 is naturally aligned with the markings, and then adjust the adjustment rod 6 so that the bubbles of the two levels 5 are located in the middle of the levels 5, that is, the levels 5 are horizontal, and then slide the sliding bar 22 to align the lower end of the needle catheter 4 with the puncture position, and then slide the slider 71 in the arc groove 31 to the specified angle position according to the predetermined angle measured by the CT scan, and finally use the puncture needle to pass through the needle catheter 4 for puncture. It should be noted that the device is not only suitable for lung puncture, but can also be used for puncture operations on other organs.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A CT-guided puncture auxiliary positioning device, characterized in that: It comprises a fixing belt, a panel located above the fixing belt, a protractor arranged on the panel, and a needle insertion catheter, wherein two mutually perpendicular levels are arranged on the panel, the fixing belt is connected to the panel via a plurality of length-adjustable adjustment rods, and the needle insertion catheter is connected to the protractor so that one end of the needle insertion catheter can rotate along the outer circumference of the protractor around the outer circumference center of the protractor to achieve a change in the inclination angle of the needle insertion catheter; The panel is rectangular, and there are four adjusting rods distributed at the four corners of the panel, one of the level gauges is arranged parallel to the long side of the panel and the other level gauge is arranged parallel to the wide side of the panel; The device also includes a rectangular frame arranged perpendicular to the protractor, the protractor has an arc groove arranged along the outer circumference of the protractor, one end of the rectangular frame is rotatably connected to the center of the outer circumference of the protractor and the other end is limited by the arc groove and can move along the arc groove, the rectangular frame is rotatably connected to two fixed rods of equal length on the side away from the protractor, and the two ends of the needle insertion catheter are respectively rotatably connected to the lower ends of the two fixed rods.

2. The CT-guided puncture auxiliary positioning device according to claim 1, characterized in that: The panel is provided with a slide groove arranged along the long side direction of the panel, a slide bar which can slide in the slide groove is clamped in the slide groove, and the protractor is fixedly arranged on the slide bar.

3. The CT-guided puncture auxiliary positioning device according to claim 1, characterized in that: A through hole is provided at the center of the outer circumference of the protractor, the edges of the corresponding ends of the rectangular frame extend outward and extend into the through hole, and a slider is provided on the edge of the rectangular frame close to the protractor, and the slider is clamped in the arc groove and can slide in the arc groove.

4. The CT-guided puncture auxiliary positioning device according to claim 1, characterized in that: The adjusting rod includes a first threaded rod arranged on a fixing belt, a second threaded rod arranged on a panel, and an adjusting cylinder threadably connected to the free ends of the first threaded rod and the second threaded rod. During the rotation of the adjusting cylinder, the first threaded rod and the second threaded rod are synchronously rotated in or out relative to the adjusting cylinder.

5. The CT-guided puncture auxiliary positioning device according to claim 1, characterized in that: The fixing belt comprises an upper layer for arranging the first threaded rod and a lower layer which can be adhered to the patient's chest skin, and the upper layer and the lower layer are adhered and fixed by means of a hook and loop fastener.

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