CT (Computed Tomography) positioning puncture angle guider

Abstract

The utility model discloses a CT (Computed Tomography) positioning puncture angle guider, which is mainly applied to the technical field of medical instruments and comprises a bubble type gradienter, a protractor, an angle scale and a locking hand wheel, the protractor is in a right-angle fan shape, the arc-shaped edge is provided with scales, the angle scale is rotatably connected to the circle center, and the locking hand wheel is arranged at the joint. A bubble type gradienter is arranged on the right-angle side of the protractor, a protruding block is arranged on the lower portion of the angle ruler, a through hole is formed in the center of the protruding block in the length direction of the angle ruler, and the axis of the through hole is aligned with scale marks of the angle ruler. The CT positioning puncture angle guiding device is scientific and reasonable in structural design, convenient to use, safe, reliable, low in manufacturing cost, capable of being used repeatedly, high in adaptability and high in puncture precision, reduces operation risks, improves puncture operation efficiency and has high popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a CT positioning puncture angle guide. Background Art

[0002] In medical practice, percutaneous puncture positioning is a very important surgical technique with many applications. Its accuracy is directly related to the surgical effect and patient safety. Traditional puncture positioning methods often rely on the doctor's experience and feel, lack accurate data support, and are prone to errors. In recent years, with the development of CT imaging technology, people have begun to try to use CT images for puncture path planning to improve the accuracy of percutaneous puncture positioning. However, when using CT images to plan the puncture path, the existing puncture positioning system often cannot accurately determine the puncture angle and distance, thereby affecting the accuracy of percutaneous puncture surgery.

[0003] Application No.: 2017202191657 discloses a handheld CT positioning puncture digital display angle guide, including a fixed rod or a fixed plate, an angle adjustment rod, an extension rod, a guide bar, a horizontal or vertical calibration component, and an arc track. The middle part of the angle adjustment rod is connected to the center of the arc track and can rotate around the center of the circle. The angle adjustment rod is provided with a fixed component, which is used to fix the angle adjustment rod on the angle adjustment component. The angle adjustment rod is provided with a digital angle meter. One end of the extension rod is connected to the angle adjustment rod, and the other end is connected to the guide bar. The guide bar is provided with a guide groove or a guide through hole parallel to the angle adjustment rod. The horizontal or vertical calibration component is fixed to the fixed rod or the fixed plate. The utility model adopts a digital display angle meter to quickly and accurately display the angle value, which greatly improves the operation accuracy; through the design of the extension rod and the guide bar, the precise angle and depth required for puncture can be guaranteed at the same time, and the operation is convenient and the structure is simple.

[0004] Although the above technical solution solves the accuracy of percutaneous puncture positioning, it still has the following disadvantages: 1. Complex structure and poor reliability. There are multiple rotary pairs in the above technical solution, and the structure is complex, which further amplifies the operation accuracy of the guide; 2. It is not convenient to disinfect the whole and the reusability is poor. The above technical solution contains electronic devices, which cannot be thoroughly disinfected, and there are safety hazards. It cannot be reused; 3. It is difficult to operate and difficult to use. In the above technical solution, when using it, it is necessary to ensure that the extension rod is close to the puncture point, and at the same time, the fixing plate is kept parallel to the ground before puncture can be performed. It has high requirements on the operator and is difficult; 4. The fit between the puncture needle and the guide strip is not high, and the clearance is large, which affects the puncture accuracy. Utility Model Content

[0005] The utility model provides a CT positioning puncture angle guide, which solves the problems of the existing guide, such as complex structure, poor reliability, non-reusability, inconvenience in use, great difficulty in operation and high use cost.

[0006] The technical solution of the utility model is: a CT positioning puncture angle guide, including a bubble level, a protractor, an angle ruler, and a locking handwheel. The protractor is a right-angle sector, with scales on the arc edge, and is rotatably connected to the angle ruler at the center of the circle. The connection is provided with a locking handwheel, the right-angle side of the protractor is provided with a bubble level, the lower part of the angle ruler is provided with a convex block, the center of the convex block is provided with a through hole along the length direction of the angle ruler, and the axis of the through hole is aligned with the scale line of the angle ruler.

[0007] Preferably, the bottom of the protrusion is flush with the lower edge of the protractor.

[0008] Preferably, the length of the protrusion is at least 25 mm.

[0009] Preferably, the diameter of the through hole at the center of the bump is 1 mm-3 mm.

[0010] Preferably, the protractor and angle scale are made of medical stainless steel or acrylic material.

[0011] Preferably, the bubble level is fixedly connected to the protractor.

[0012] Preferably, the front end of the through hole is beveled.

[0013] Preferably, the angle scale has a groove on the top.

[0014] Principle of the utility model: In order to solve the problems of complex structure and poor reliability of existing guides, the utility model simplifies the structure, adopts a protractor and an angle ruler as the main structure, uses a locking handwheel to maintain the puncture angle, and has a scientific and reasonable structural design with fewer components, thereby improving the reliability of the guide; In order to solve the problem of non-reusability, the protractor and the angle ruler are made of medical stainless steel, and the bubble level is fixedly connected to the protractor. The guide can be disinfected by ethylene oxide or low-temperature plasma technology. Since it does not contain electronic devices, it can be disinfected as a whole and can be reused after disinfection, or it can be made of acrylic material as a disposable product to reduce manufacturing costs. The utility model solves the problems of inconvenience in use and difficulty in operation. The bottom of the protrusion is flush with the lower edge of the protractor. When in use, the puncture needle is easier to align with the puncture point. The lower edge of the protractor can also overlap with the patient's body surface to ensure that the two right-angled sides of the protractor remain horizontal and vertical, thereby reducing the difficulty of operation. The utility model solves the problem of large clearance between the puncture needle and the guide strip by determining the diameter of the through hole in the center of the protrusion according to the diameter of the puncture needle to ensure that the clearance between the puncture needle and the through hole is small, thereby reducing the swing of the puncture needle during puncture and improving the puncture accuracy. In addition, a variety of guides need to be prefabricated according to the diameter of the puncture needle, and a suitable guide is selected according to actual conditions. The use is convenient and cross infection can be avoided.

[0015] The beneficial effects of the utility model are as follows: a CT positioning puncture angle guide, which has a scientific and reasonable structural design, is easy to use, safe and reliable, has a low manufacturing cost, is reusable, has strong adaptability, has high puncture accuracy, reduces surgical risks, improves the efficiency of puncture surgery, and has a high promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 It is the front view of the utility model;

[0019] Figure 4 This is a rear view of the utility model;

[0020] Figure 5 It is the right view of the utility model;

[0021] In the figure, 101 is a protractor, 102 is an angle ruler, 103 is a bubble level, 104 is a locking hand wheel, and 201 is a puncture needle. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is as follows: Figure 1-Figure 5As shown, a CT positioning puncture angle guide includes a bubble level 103, a protractor 101, an angle scale 102, and a locking handwheel 104. The protractor 101 is a right-angle sector with scales on the arc edge. The center of the circle is rotatably connected to the angle scale 102, and the connection is provided with a locking handwheel 104. The right-angle side of the protractor 101 has a bubble level 103, and the lower part of the angle scale 102 has a protrusion. The center of the protrusion has a through hole along the length direction of the angle scale 102, and the axis of the through hole is aligned with the scale line of the angle scale 102.

[0023] The use process of the utility model is as follows: a CT image of the part to be punctured is obtained after scanning by a CT device, and the optimal puncture path distance and angle are calculated on the CT image using the software provided by the CT device; the angle scale 102 on the puncture angle guide is adjusted to a corresponding angle according to the optimal puncture path angle planned on the CT image; the length of the bump is added to the planned distance of the in vivo path to obtain the surface puncture path distance, and the surface puncture path distance is marked on the puncture needle 201; after the above steps are completed, the surgeon places the puncture angle guide horizontally on the puncture point on the patient's body surface, and inserts the puncture needle 201 into the through hole in the center of the bump to accurately locate the lesion.

[0024] Specifically, the bottom of the protrusion is flush with the lower edge of the protractor 101. In the above technical solution, the protrusion is flush with the lower edge of the protractor 101, which facilitates the alignment of the puncture needle 201 with the puncture point during use, thereby improving the puncture accuracy.

[0025] Specifically, the length of the protrusion is at least 25 mm. In the above technical solution, the protrusion through hole with an appropriate length provides a stable puncture path, ensuring that the puncture needle 201 moves along the preset path during puncture, avoiding deviation during puncture.

[0026] Specifically, the diameter of the through hole at the center of the protrusion is 1 mm to 3 mm. The above through hole diameter range can adapt to puncture needles 201 of various diameters.

[0027] Specifically, the protractor 101 and the angle scale 102 are made of medical stainless steel or acrylic material. The protractor 101 and the angle scale 102 made of medical stainless steel are not easy to rust, and can be reused after high-temperature disinfection, thereby reducing the use cost of the guide; or they are made of acrylic material as disposable products, thereby reducing production costs and avoiding cross infection.

[0028] Specifically, the bubble level 103 is fixedly connected to the protractor 101. In the above technical solution, when the protractor 101 and the angle scale 102 made of medical stainless steel need to be sterilized, ethylene oxide or low-temperature plasma technology can be used to sterilize the guide to avoid damage to the bubble level 103.

[0029] Specifically, the front end of the through hole is processed with a bevel angle. In the above technical solution, the through hole is processed with a bevel angle, which increases the diameter of the front end of the through hole, provides a guiding function, and facilitates the insertion of the puncture needle 201 into the through hole.

[0030] Specifically, there is a groove at the top of the angle scale 102. In the above technical solution, the groove can reduce the obstruction of the scale value, making it easier to read the angle value.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A CT positioning puncture angle guide, comprising a bubble level (103), characterized in that: The invention also comprises a protractor (101), an angle scale (102), and a locking hand wheel (104); the protractor (101) is in the shape of a right-angled sector, has a scale on the arc edge, is rotatably connected to the angle scale (102) at the center of the circle, and has a locking hand wheel (104) at the connection point; a bubble level (103) is provided on the right-angled side of the protractor (101); a convex block is provided at the bottom of the angle scale (102); a through hole is provided at the center of the convex block along the length direction of the angle scale (102); and the axis of the through hole is aligned with the scale line of the angle scale (102).

2. A CT positioning puncture angle guide according to claim 1, characterized in that: The bottom of the protrusion is flush with the lower edge of the protractor (101).

3. A CT positioning puncture angle guide according to claim 2, characterized in that: The length of the projection is at least 25 mm.

4. The CT positioning puncture angle guide according to claim 1, characterized in that: The diameter of the through hole in the center of the bump is 1mm-3mm.

5. The CT positioning puncture angle guide according to claim 1, characterized in that: The protractor (101) and the angle scale (102) are made of medical stainless steel material or acrylic material.

6. The CT positioning puncture angle guide according to claim 1, characterized in that: The bubble level (103) is fixedly connected to the protractor (101).

7. The CT positioning puncture angle guide according to claim 1, characterized in that: The front end of the through hole is beveled.

8. The CT positioning puncture angle guide according to claim 1, characterized in that: The angle scale (102) has a groove on the top.

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