CT positioning puncture angle guiding device convenient to disassemble

Abstract

The utility model relates to the technical field of puncture equipment, in particular to a CT (computed tomography) positioning puncture angle guider convenient to disassemble, which comprises a protractor, an angle scale is rotatably arranged on the protractor, a positioning groove is arranged on the angle scale close to a puncture guide plate, the puncture guide plate is of a T-shaped structure, and the puncture guide plate is detachably clamped in the positioning groove. A puncture needle channel is arranged in the middle of the puncture guide plate. Through the design of the protractor and the angle scale, a doctor can easily read and accurately adjust the puncture angle, and the puncture requirements of different cases are met. Due to the design of the T-shaped structure of the puncture guide plate and the positioning groove in the angle scale, the puncture guide plate can be conveniently disassembled from the angle scale, stability and accuracy of the puncture needle in the puncture process are guaranteed, puncture deviation is reduced, meanwhile, the protractor and the angle scale can be conveniently disassembled from the puncture guide plate after preliminary puncture, and the puncture efficiency is improved. Subsequent CT scanning can be conveniently carried out again, re-positioning adjustment is also facilitated, and the puncture efficiency is improved.

Description

Technical Field

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

[0002] With the rapid development of medical imaging technology, especially the widespread clinical application of computed tomography (CT) technology, precise positioning and puncture technology play an increasingly important role in medical diagnosis and treatment. In the diagnosis and treatment of cancer, cardiovascular disease and many other diseases, accurately obtaining lesion tissue samples or performing precise treatment operations is of great significance for improving diagnosis and treatment effects and reducing complications. However, traditional puncture operations often rely on the doctor's experience and intuition, and there are problems such as inaccurate positioning, complex operations, and high risks of complications.

[0003] To improve the positioning accuracy, the doctor will plan the puncture path and determine the puncture angle according to the CT scan image. After the puncture angle is determined, the angle is fixed on the protractor through the angle scale on the guide, the guide is placed on the surface of the patient's puncture position, and then the puncture needle is used for puncture under the guidance of the puncture guide on the guide. After the puncture is completed, a CT scan needs to be performed again to determine whether the puncture position is accurate. In this process, the positioning guide needs to be removed for convenience of operation, but if the positioning is inaccurate after removal, fine-tuning is required, and the needle needs to be re-threaded, which is time-consuming and laborious. In order to solve the problem of inconvenient operation and difficult disassembly, and to avoid the situation where the puncture needle and the guide cannot be separated, CN205073035U discloses a CT positioning puncture angle guide, in which a guide groove is opened on the outer surface of the angle indicator needle, and the puncture needle is positioned close to the guide groove to achieve its positioning. The puncture needle and the guide groove are clearance fits. Although it is easy to disassemble, there is inaccurate positioning, which affects the puncture accuracy; there is also a problem that the guide is slightly displaced during use, causing the puncture needle to fall out of the guide groove, resulting in low positioning accuracy.

[0004] Therefore, there is an urgent need to develop a CT positioning puncture angle guide that has a simple structure, convenient operation, and is easy to disassemble without affecting the positioning accuracy. Utility Model Content

[0005] The purpose of the utility model is to provide a CT positioning puncture angle guide which is easy to disassemble, so as to solve the problem that the existing puncture guide mentioned in the above background technology is inconvenient to operate and difficult to disassemble, resulting in inconvenient positioning or poor positioning accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides a CT positioning puncture angle guide that is easy to disassemble, characterized in that it includes a protractor, a rotatable angle scale is provided on the protractor, a positioning groove is provided on the angle scale near the puncture guide plate, the puncture guide plate is a T-shaped structure, the puncture guide plate is detachably clamped in the positioning groove, can be easily disassembled, and a puncture needle channel is provided at the center line of the puncture guide plate.

[0007] Preferably, the positioning groove is a U-shaped groove, the top end is concave to form a card slot, the card slot is vertically arranged with the positioning groove, and the two sides of the T-shape of the puncture guide plate are card-connected in the card slot for easy disassembly.

[0008] Preferably, the protractor is a right-angle fan-shaped structure with a scale on the arc edge. The center of the circle is connected to one end of the angle scale through a locking nut. A semicircular notch is provided at the other end of the angle scale. An inclined surface is provided at the end of the semicircular notch to facilitate observation of the angle scale line.

[0009] Preferably, a guide groove is provided in the middle of the outer surface of the puncture guide plate, and the guide groove is located directly above the puncture needle channel.

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

[0011] Preferably, a level is provided on the bottom edge of the protractor to calibrate the horizontal reference line at any time.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the CT positioning puncture angle guide that is easy to disassemble, the design of the protractor and angle ruler enables doctors to easily read and accurately adjust the puncture angle to meet the puncture needs of different cases. The T-shaped structure of the puncture guide and the design of the positioning groove on the angle ruler facilitate the disassembly and assembly of the puncture guide from the angle ruler, which not only ensures the stability and accuracy of the puncture needle during the puncture process and reduces the puncture deviation, but also facilitates the removal of the positioning components (protractor and angle ruler) from the puncture needle after the initial puncture, leaving only the puncture guide and the puncture needle for another CT scan to determine whether the puncture is accurate, and also facilitates the use of the positioning components to adjust it after the CT scan to improve the puncture efficiency. A card slot is vertically arranged at the end of the positioning slot to further firmly fix the puncture guide; a semicircular notch and an inclined surface are arranged at the end of the angle ruler to facilitate observation and accurate reading of the angle value, making positioning more accurate; a guide groove is arranged above the puncture channel, which is also convenient for observing the direction and position of the puncture needle and facilitating the puncture operation; a level is convenient for determining the horizontal reference line of the puncture angle, making angle positioning more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the puncture guide plate in the utility model;

[0016] Figure 3 It is a structural schematic diagram of one angle of the angle scale in the utility model.

[0017] Figure 4 It is a structural schematic diagram of another angle of the angle scale in the utility model.

[0018] The meaning of each number in the figure is:

[0019] 1. Puncture guide plate; 11. Puncture needle channel; 12. Guide groove; 2. Angle scale; 21. Locking nut; 22. Positioning groove; 23. Card slot; 24. Arc surface; 25. Inclined surface; 3. Protractor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] The utility model provides a CT positioning puncture angle guide which is easy to disassemble. Figure 1-Figure 4 As shown, it includes a protractor 3, which is a right-angled fan-shaped structure with a scale on the arc edge, and an angle scale 2 is rotatably connected at the center of the circle. The connection between the angle scale 2 and the protractor 3 is locked and fixed by a locking nut 21. A puncture guide plate 1 is installed at the end of the angle scale 2. The puncture guide plate 1 is a T-shaped structure, and a puncture needle channel 11 is arranged in the middle of the puncture guide plate 1. A positioning groove 22 is arranged near the puncture guide plate 1 at the angle scale 2, and the puncture guide plate 1 is clamped at the positioning groove 22. The protractor 3 is designed as a right-angled fan-shaped structure with a scale on the arc edge, so that the doctor can intuitively read and accurately set the required puncture angle. The angle scale 2 is rotatably connected to the protractor 3 at the center of the circle, and the bottom of the angle scale 2 is fixed to the protractor 3 by a locking nut 21, which further ensures the flexible adjustment and accurate fixation of the puncture angle. The puncture guide plate 1 adopts a T-shaped structure, and the puncture needle channel 11 arranged on its center line provides a stable channel for the puncture needle, ensuring the accuracy and stability of the path during the puncture process. The positioning groove 22 arranged near the puncture guide plate 1 of the angle scale 2 is detachably connected to the puncture guide plate 1, ensuring the stability and accuracy of the puncture guide plate during the adjustment process, avoiding shaking or deviation during the puncture process, and also facilitating the removal of the puncture guide plate from the angle scale.

[0022] In this embodiment, a semicircular notch is provided at one end of the angle scale 2 away from the puncture guide plate 1, and an inclined surface 25 is provided at the end of the semicircular notch. The semicircular notch and the inclined surface 25 facilitate observation and reading of the scale.

[0023] Specifically, the positioning groove 22 is set to be U-shaped, and the two sides thereof are provided with a clamping groove 23, which is arranged perpendicular to the positioning groove 22, and the two sides of the puncture guide plate 1 are clamped at the clamping groove 23, which further facilitates the positioning of the puncture guide plate 1. The arrangement of the positioning groove 22 and the clamping groove 23 is adapted to the T-shaped structure of the puncture guide plate 1, which facilitates the stable assembly of the puncture guide plate 1, and also facilitates its disassembly and installation from the angle scale 2, and facilitates subsequent positioning adjustment and operation.

[0024] Furthermore, an arc surface 24 is provided on the outer side of one end of the angle scale 2 close to the puncture guide plate 1 to avoid blocking the puncture site and facilitate observation of the puncture site.

[0025] Furthermore, a guide groove 12 is provided in the middle of the outer surface of the puncture guide plate 1. The guide groove 12 is located directly above the puncture needle channel 11, so as to facilitate observation of the position and direction of the puncture needle.

[0026] Furthermore, the protractor 3 and the angle scale 2 are made of acrylic material and are disposable products, which reduces production costs and avoids cross infection.

[0027] Furthermore, a level is provided on the bottom edge of the protractor 3 to facilitate the horizontal positioning of the guide.

[0028] When using the CT positioning puncture angle guide that is easy to disassemble of the utility model, the doctor first plans the puncture path according to the CT scanning results to determine the puncture position and the angle of the puncture needle, sets the angle by rotating the angle scale 2, and fixes it with the locking nut 12, then places the guide horizontally on the puncture point on the patient's body surface, ensures that the guide is horizontal by observing the level meter, and then punctures the puncture needle through the puncture needle channel 11 on the puncture guide plate 1. After the puncture is completed, the puncture guide plate 1 is removed from the positioning groove 22 and the card slot 23 of the angle scale 2, and the protractor 3 and the angle scale 2 are removed, so as to facilitate the patient to be CT scanned again to determine whether the puncture is accurate. If adjustment is required, the T-shaped puncture guide plate 1 is clamped in the positioning groove 22 and the card slot 23 again to be fixed, and further puncture is performed. Repeat the above steps until the puncture is in place, and then the puncture guide plate 1 is separated from the puncture needle. The detachable structure of the T-shaped puncture guide plate 1 and the positioning slot 22 and the clamping slot 23 greatly facilitates the puncture positioning process, facilitates position adjustment, and improves the puncture efficiency.

[0029] 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 preferred examples of the utility model and are not used to limit 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 that is easy to disassemble, characterized in that: The invention comprises a protractor (3), an angle scale (2) is rotatably arranged on the protractor (3), a positioning groove (22) is arranged on the angle scale (2) near the puncture guide plate (1), the puncture guide plate (1) is a T-shaped structure, the puncture guide plate (1) is detachably clamped in the positioning groove (22), and a puncture needle channel (11) is arranged in the middle of the puncture guide plate (1).

2. The easily disassembled CT positioning puncture angle guide according to claim 1, characterized in that: The positioning groove (22) is a U-shaped groove, the end of which is concave to form a clamping groove (23), the clamping groove (23) is arranged perpendicular to the positioning groove (22), and the two sides of the puncture guide plate (1) are detachably clamped in the clamping groove (23).

3. The easily disassembled CT positioning puncture angle guide according to claim 1 is characterized in that: The protractor (3) is a right-angled fan-shaped structure with a scale on the arc edge. The center of the circle is connected to one end of the angle scale (2) through a locking nut (21). The other end of the angle scale (2) is provided with a semicircular notch, and the end of the semicircular notch is provided with an inclined surface (25).

4. The easily disassembled CT positioning puncture angle guide according to claim 1 is characterized in that: A guide groove (12) is provided in the middle of the outer surface of the puncture guide plate (1), and the guide groove (12) is located directly above the puncture needle channel (11).

5. The easily disassembled CT positioning puncture angle guide according to claim 1 is characterized in that: A level is provided on the bottom edge of the protractor (3).

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