CT (Computed Tomography) puncture positioning and guiding device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a CT (computed tomography) puncture positioning and guiding device which comprises a pneumatic arm cylinder, a pneumatic mechanical arm moving in a vertical plane is mounted at the top of the pneumatic arm cylinder, a control handle is connected to the free end of the pneumatic mechanical arm, and a manual switch is arranged on the side wall of the control handle. The manual control switch is in signal connection with the pneumatic arm air cylinder, a laser positioning box is fixedly arranged at the end of the control handle, a laser emitter is arranged at the bottom of the laser positioning box and projects a positioning line downwards, and a protractor used for positioning the angle of the guided puncture needle in the vertical plane is fixedly installed at the top of the laser positioning box. The puncture guide plate and the puncture needle on the top of the laser positioning box are stably supported through the pneumatic mechanical arm, the puncture guide plate can be prevented from shaking in the puncture process, and therefore the puncture precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to CT puncture positioning guiding device. BACKGROUND

[0002] With the rapid development of medical imaging technology, especially the wide application of computer tomography (CT) technology in clinic, accurate positioning and puncture technology play an increasingly important role in medical diagnosis and treatment. In the diagnosis and treatment of cancer, cardiovascular disease and other diseases, accurate acquisition of lesion tissue samples or precise treatment operation has great significance for improving diagnosis and treatment effect and reducing complications. However, the traditional puncture operation often depends on the experience and intuition of doctors, and there are problems such as inaccurate positioning, complex operation and high risk of complications.

[0003] In the prior art, the utility model discloses a CT positioning puncture angle guide device, which comprises a base, a protractor, a level, and an angle indicating needle, and a guide groove is formed on the outer surface of the angle indicating needle, when the puncture needle is close to the guide groove, the puncture needle is parallel or coincides with the protractor, and the positioning of the puncture needle is realized by making the puncture needle close to the guide groove.

[0004] However, the above-mentioned guide device does not set up a supporting mechanism, and the base needs to be placed on the body surface of the patient or held by the doctor during use, the body surface of the patient is not a flat supporting surface, and the guide device is easy to shake during the puncture process by holding the positioner by hand, thereby reducing the precision of puncture. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing CT puncture positioning guiding device, which provides stable supporting effect for puncture guide plate and puncture needle through pneumatic arm, so as to solve the defects in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The CT puncture positioning guiding device is characterized by comprising a pneumatic arm cylinder, a pneumatic mechanical arm movably arranged on the top of the pneumatic arm cylinder, a control handle connected to the free end of the pneumatic mechanical arm, a hand control switch arranged on the side wall of the control handle, a signal connection between the hand control switch and the pneumatic arm cylinder, a laser positioning box fixedly arranged at the end of the control handle, a laser emitter arranged at the bottom of the laser positioning box, a positioning line projected downward by the laser emitter, and a protractor fixedly arranged on the top of the laser positioning box and used for positioning the angle of the guiding puncture needle in the vertical plane.

[0008] As a preferred technical scheme, the protractor is parallel to the vertical plane in which the pneumatic arm moves, one side of the protractor is provided with a puncture guide plate, one end of the puncture guide plate is rotatably connected to the center of the protractor, the puncture guide plate is provided with a puncture channel extending radially along the angle set by the protractor, and a puncture needle is arranged in the puncture channel.

[0009] As a preferred technical scheme, the laser emitter projects a cross-shaped positioning line downward, the positioning line is parallel to the plane in which the protractor is located, and the positioning line intersects with the extension line of the puncture channel.

[0010] As a preferred technical scheme, the pneumatic arm cylinder is fixed on the vertical lifting platform through the transverse moving platform, and the vertical lifting platform is provided with a positioning plate on the side wall.

[0011] As a preferred technical scheme, the transverse moving platform comprises a transverse sliding rail and a sliding block of the pneumatic arm cylinder, and the sliding block is slidably connected with the transverse sliding rail.

[0012] As a preferred technical scheme, the vertical lifting platform is a pneumatic lifting mechanism.

[0013] As a preferred technical scheme, the vertical lifting platform is arranged on a moving frame, and the moving frame is provided with rollers at the bottom.

[0014] As a preferred technical scheme, the laser positioning box is provided with a level meter on the side close to the protractor.

[0015] Compared with the prior art, the protractor has the advantages that:

[0016] 1. The pneumatic arm provides stable support for the puncture guide plate and the puncture needle on the top of the laser positioning box, so that the puncture guide plate is prevented from shaking during puncture, and the puncture precision is improved.

[0017] 2. The protractor positions the angle of the puncture needle in the vertical plane, the laser emitter projects a positioning line downward, and the angle of the puncture needle and the horizontal plane is positioned, so that the puncture precision is further ensured.

[0018] 3. The rollers are arranged at the four corners of the bottom of the moving frame, so that the moving frame can be moved conveniently, the height of the pneumatic arm cylinder in the vertical direction is adjusted through the pneumatic vertical lifting platform after the moving frame is moved to the required position, the positioning plate and the disease or CT are kept at a certain height, the position of the pneumatic arm cylinder is fine-tuned through the transverse moving platform, the target puncture point is located on the positioning line projected by the laser emitter, and the subsequent puncture action is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Fig. 1 is a structural schematic diagram of the embodiment of the present application;

[0021] Fig. 2 is a structural schematic diagram of the mounting box of the embodiment of the present application;

[0022] Fig. 3 is an exploded schematic diagram of the protractor of the embodiment of the present application.

[0023] In the figure: 1-pneumatic arm cylinder; 2-pneumatic mechanical arm; 3-control handle; 4-laser positioning box; 5-laser emitter; 6-puncture needle; 7-protractor; 8-puncture guide plate; 9-vertical lifting platform; 10-positioning plate; 11-horizontal moving platform; 12-moving frame; 13-positioning line; 14-screw rod; 15-locking nut; 16-needle-puncturing channel; 17-through hole; 18-sickbed. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0025] Figs. 1-3A CT puncture positioning and guidance device is shown. It includes a pneumatic arm cylinder 1 connected to a compressed gas generator via an air supply tube. A pneumatic manipulator arm 2, movable within a vertical plane, is mounted on top of the pneumatic arm cylinder 1. The pneumatic manipulator arm 2 is composed of multiple, sequentially connected movable arms, each pivotally connected to the other. The axes of rotation extend laterally, and the movable arms are driven by the cylinder. A control handle 3 is connected to the free end of the pneumatic manipulator arm 2. A manual switch is located on the sidewall of the control handle 3. This switch is signal-connected to the pneumatic arm cylinder 1 and controls the pneumatic arm valve switch. Pressing the manual switch causes the pneumatic manipulator arm 2 to rotate within the vertical plane, allowing the control handle 3 to rise and fall, and retract forward and backward. A laser positioning box 4 is fixed to the end of the control handle 3. A laser emitter 5 is located at the bottom of the laser positioning box 4, projecting a positioning line downward. A protractor 7 is fixed to the top of the laser positioning box 4 for determining the angle of the guide puncture needle 6 within the vertical plane.

[0026] The plane of the protractor 7 is parallel to the vertical plane in which the pneumatic manipulator 2 moves. A puncture guide plate 8 is provided on one side of the protractor 7. One end of the puncture guide plate 8 is rotatably connected to the center of the protractor 7. The puncture guide plate 8 is provided with a needle threading channel extending radially along the angle set by the protractor 7. The puncture needle 6 is inserted into the needle threading channel. The laser emitter 5 projects a cross-shaped positioning line 13 downward. The positioning line is parallel to the plane of the protractor 6 and intersects with the extension line of the needle threading channel. A spirit level is installed on the side of the laser positioning box 4 near the protractor 7.

[0027] The angle between the puncture needle and the horizontal direction can be determined by the CT scan results. By rotating the puncture guide 8, the angle between the puncture needle 6 and the horizontal direction is consistent with the CT scan result. Then, the control handle 3 is adjusted to make the positioning line 13 of the laser emitter 5 coincide with the target puncture point. Then, the puncture needle 6 is retracted back and forth so that the end of the puncture needle 6 coincides with the target puncture point. The manual switch is released and the pneumatic mechanical arm 12 is locked. At this time, the puncture positioning is completed and the puncture can be completed by pushing the puncture needle 6.

[0028] To facilitate position adjustment of the pneumatic arm cylinder 2, it is secured to the vertical lift platform 9 via a transverse movable platform 11. Positioning plates 10 are provided on the sidewalls of the vertical lift platform 9. The transverse movable platform 11 includes transverse rails and a slider for the pneumatic arm cylinder 2, which is slidably connected to the transverse rails. The vertical lift platform 9 is a pneumatic lifting mechanism.

[0029] The vertical lifting platform 9 is mounted on a mobile frame 12, and rollers are provided at the bottom of the mobile frame 12. When in use, the mobile frame 10 is first pushed to quickly move the device close to the patient's position, and the vertical position of the pneumatic arm cylinder 1 is quickly adjusted through the pneumatic lifting mechanism. The vertical position is determined by the height of the positioning plate 10 and the bed or CT machine. The positioning plate 10 is kept perpendicular to the bed or the patient. After the position is determined, the slider is moved on the transverse slide rail to quickly adjust the pneumatic arm cylinder 2 along the length of the bed. The slider can be fixed to the transverse slide rail by the locking bolt, and then the position of the puncture needle can be adjusted.

[0030] A protractor 7 for positioning the puncture needle 6 relative to the horizontal is fixedly mounted on the top of the laser positioning box 14. A puncture guide 8 is provided on one side of the protractor 7. A laterally extending screw 14 is fixedly mounted on one end of the puncture guide 8. A through hole 17 for the screw 14 to pass through is provided at the center of the protractor. The screw 14 is rotatably inserted into the through hole 17. Rotating the puncture guide 8 adjusts the angle of the puncture needle 6 relative to the horizontal. A locking nut 15 is screwed onto the end of the screw 14 away from the puncture guide 8. After adjusting the angle of the puncture guide 8, the locking nut 15 is tightened to maintain the angle of the puncture guide 8 and the puncture needle 6 fixed. The puncture guide 8 is provided with a needle channel 16 extending radially along the protractor 7. The puncture needle 6 is inserted into the needle channel 16, providing guidance for the puncture needle 6. The laser transmitter 5 projects a cross-shaped positioning line 13 downward, and the positioning line 13 intersects with the extension line of the needle threading channel 16 .

[0031] During use, patient 12 lies on bed 18. The puncture point to be punctured is identified and marked on the patient's body surface using CT scan results. The puncture angle is then determined based on the CT scan results, specifically by adjusting the angle between the puncture needle 6 and the horizontal. Laser emitter 5 is turned on, projecting a cross-shaped positioning line 13 onto the patient's body surface. The pneumatic manipulator 2 is positioned using control handle 3 so that positioning line 13 precisely overlaps the puncture point. The puncture needle 6 is then retracted forward and backward so that the needle tip is precisely centered at the puncture point. Control handle 13 is released, and the puncture needle 6 is then guided along the needle channel 16 for insertion.

[0032] 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 are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. CT puncture positioning and guidance device, characterized by: The invention comprises a pneumatic arm cylinder (1), a pneumatic mechanical arm (2) movable in a vertical plane is installed on the top of the pneumatic arm cylinder (1), a control handle (3) is connected to the free end of the pneumatic mechanical arm (2), a manual switch is provided on the side wall of the control handle (3), the manual switch is connected to the pneumatic arm cylinder (1) by signal, a laser positioning box (4) is fixedly provided at the end of the control handle (3), a laser transmitter (5) is provided at the bottom of the laser positioning box (4), the laser transmitter (5) projects a positioning line downward, and a protractor (7) for positioning the angle of a guide puncture needle (6) in a vertical plane is fixedly installed on the top of the laser positioning box (4).

2. The CT puncture positioning and guiding device according to claim 1, wherein: The plane where the protractor (7) is located is parallel to the vertical plane in which the pneumatic manipulator (2) moves. A puncture guide plate (8) is provided on one side of the protractor (7). One end of the puncture guide plate (8) is rotatably connected to the center of the protractor (7). The puncture guide plate (8) is provided with a needle channel extending radially along the protractor (7), and a puncture needle (6) is inserted into the needle channel.

3. The CT puncture positioning and guiding device according to claim 2, wherein: The laser emitter (5) projects a cross-shaped positioning line downwards, the positioning line is parallel to the plane where the protractor (7) is located, and the positioning line intersects with the extension line of the needle threading channel.

4. The CT puncture positioning and guiding device according to claim 1, wherein: The pneumatic arm cylinder (1) is fixed on the vertical lifting platform (9) via a transverse moving platform (11), and a positioning plate (10) is provided on the side wall of the vertical lifting platform (9).

5. The CT puncture positioning and guiding device according to claim 4, characterized in that: The transverse moving platform (11) comprises a transverse slide rail and a slider on the pneumatic arm cylinder (1), and the slider is slidably connected to the transverse slide rail.

6. The CT puncture positioning and guiding device according to claim 4, characterized in that: The vertical lifting platform (9) is a pneumatic lifting mechanism.

7. The CT puncture positioning and guiding device according to claim 4, characterized in that: The vertical lifting platform (9) is arranged on a movable frame (12), and rollers are arranged at the bottom of the movable frame (12).

8. The CT puncture positioning and guiding device according to claim 1, wherein: A level is installed on the laser positioning box (4) on one side close to the protractor (7).

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