Puncture positioning device for cirrhosis portal hypertension interventional therapy

Abstract

The invention belongs to the technical field of puncture positioning devices, and discloses a puncture positioning device for cirrhosis portal hypertension interventional therapy, the puncture positioning device comprises a supporting plate and a puncture needle, a clamping groove is formed in the front surface of the supporting plate, and a positioning mechanism for improving the stability of the puncture needle in the using process is slidably connected into the clamping groove of the supporting plate; a positioning clamping groove is formed in the upper surface of the supporting plate, a limiting mechanism is arranged in the positioning clamping groove of the supporting plate, a visualization mechanism is arranged in the puncture needle, a groove is formed in the lower surface of the supporting plate, and real-time radiography monitoring is conducted on the liver area of a patient by starting the positioning mechanism; a follow-up worker can plan a route in the process of pushing the puncture needle to puncture, so that the stability of the puncture process is improved; the positioning mechanism is pushed to drive the puncture needle to perform multi-angle adjustment rotation at the front end of the positioning mechanism, so that the device can adapt to different anatomical structures and puncture angles in the subsequent use process.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture positioning devices, and particularly relates to a puncture positioning device for interventional treatment of liver cirrhosis with portal hypertension. Background Art

[0002] Develop a high-precision puncture positioning and guiding device, aiming to improve the success rate of transjugular intrahepatic portosystemic shunt (TIPS) from the hepatic vein puncture to the portal vein, reduce the incidence of complications, and simplify the operation process.

[0003] In the process of implementing the present application, it is found that there are the following problems with this technology: Most existing puncture positioning devices perform punctures by medical staff manually pushing the puncture needle during use. However, most puncture points vary, resulting in the need for real-time adjustment of the puncture direction, making it impossible for the subsequent medical staff's hands to make timely adjustments, thus leading to subsequent puncture failures, and therefore reducing the practicality of the device.

[0004] Therefore, a puncture positioning device for interventional treatment of liver cirrhosis with portal hypertension is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that most existing puncture positioning devices perform punctures by medical staff manually pushing the puncture needle during use. However, most puncture points vary, resulting in the need for real-time adjustment of the puncture direction, making it impossible for the subsequent medical staff's hands to make timely adjustments, thus leading to subsequent puncture failures. The present invention provides a puncture positioning device for interventional treatment of liver cirrhosis with portal hypertension.

[0006] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0007] A puncture positioning device for interventional treatment of liver cirrhosis with portal hypertension, comprising a support plate and a puncture needle. A card slot is provided on the front surface of the support plate. A positioning mechanism for improving the stability of the puncture needle during use is slidably connected inside the card slot of the support plate. A positioning card slot is provided on the upper surface of the support plate. A limiting mechanism is arranged inside the positioning card slot of the support plate. A visualization mechanism is arranged inside the puncture needle. A groove is provided on the lower surface of the support plate. A fixing mechanism is installed inside the groove of the support plate.

[0008] Further, the positioning mechanism includes a sliding plate, which is slidably connected inside the card slot of the support plate. A three-axis robotic arm is arranged on the upper surface of the sliding plate. A puncture guide is installed and clamped at the adjustment end of the three-axis robotic arm. Grooves are formed on the left and right sides of the puncture guide. A U-shaped fixing frame is rotatably connected inside the two groups of grooves of the puncture guide. A groove is formed on the front surface of the U-shaped fixing frame. A U-shaped connecting block is rotatably connected inside the groove of the U-shaped fixing frame. Through holes are formed on the inner walls of the left and right sides of the U-shaped connecting block. Rotating blocks are rotatably connected inside the two groups of through holes of the U-shaped connecting block. A groove is formed on the upper surface of the rotating block. A fixing sleeve is arranged inside the groove of the rotating block. An elastic cushion layer is bonded to the inner wall of the fixing sleeve. The puncture needle is slidably connected inside the elastic cushion layer.

[0009] Further, the visualization mechanism includes an L-shaped bracket and a vascular ultrasound probe. A groove is formed on the upper surface of the sliding plate. The L-shaped bracket is rotatably connected inside the groove of the sliding plate. A through hole is formed on the upper surface of the L-shaped bracket. A display screen is rotatably connected inside the through hole of the L-shaped bracket. The vascular ultrasound probe is installed inside the bottom end of the puncture needle. An electrical connection is made between the output end of the vascular ultrasound probe and the access end of the display screen.

[0010] Further, the limiting mechanism includes a second screw rod, which is slidably connected inside the positioning card slot of the support plate. The lower surface of the nut is installed on the upper surface of the sliding plate. The second screw rod is externally threaded with a nut, and the lower surface of the nut abuts against the upper surface of the support plate.

[0011] Further, the fixing mechanism includes a bidirectional threaded rod and a first motor. Through holes are formed on the inner walls of the left and right sides of the groove of the support plate. The bidirectional threaded rod is rotatably connected inside the two groups of through holes of the support plate. The first motor is installed on the right side of the support plate, and the output shaft of the first motor is installed on the right side of the bidirectional threaded rod. Two side plates are externally threaded on the bidirectional threaded rod. On the adjacent side of the two side plates, a top plate is installed on each. On the adjacent side of the two side plates, a card slot is formed on each. Through holes are formed at the bottom and top of the inner walls of the two groups of card slots of the two side plates. Two first screw rods are rotatably connected inside the two groups of through holes of the two side plates respectively. Second motors are installed on the lower surfaces of the two side plates respectively, and the output shafts of the two second motors are installed on the lower surfaces of the two first screw rods respectively. The two first screw rods are externally threaded with bottom plates respectively, and the two bottom plates are slidably connected inside the card slots of the two side plates respectively. On the lower surfaces of the two top plates, on the upper surfaces of the two bottom plates, and on the adjacent side of the two side plates, a directional pulley is installed on each.

[0012] Further, U-shaped support plates are arranged on the lower surfaces of the two groups of side plates, and the positions of the two motors II are respectively located inside the two groups of U-shaped support plates.

[0013] Further, grooves are formed on one side of the two groups of adjacent U-shaped support plates, and limiting rods are inserted into the grooves of the two groups of U-shaped support plates.

[0014] Further, control panels are installed on the left and right sides of the support plate, and the control panels are electrically connected to the control ends of the positioning mechanism, the visualization mechanism, and the fixing mechanism.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. By starting the three-axis robotic arm to drive the three-axis robotic arm to push the puncture guide to move, the monitoring surface of the puncture guide is attached to the patient's skin surface, so that the puncture guide can perform real-time contrast monitoring on the patient's liver area, and then the subsequent staff can plan the route during the process of pushing the puncture needle for puncture, thereby improving the stability of the puncture process; by pushing the fixed sleeve to drive the U-shaped connecting block to rotate left and right on the front side of the U-shaped fixing frame, and driving the rotating block to rotate back and forth inside the U-shaped connecting block, the fixed sleeve and the puncture needle can be adjusted and moved at multiple angles during use, so that the subsequent device can adapt to different anatomical structures and puncture angles during use, thus improving the practicability of the device.

[0017] 2. By starting the vascular ultrasound probe to transmit the picture of the puncture needle inserted into the human venous pipeline to the display screen, the subsequent display screen can display the blood vessels and tissue structures in real time, and then the subsequent visualization mechanism can provide actual visual assistance to the staff, thereby greatly improving the success rate of the transjugular intrahepatic portosystemic shunt from the hepatic vein puncture to the portal vein, thus improving the practicability of the device.

[0018] 3. Since the material of the fixed sleeve is a transparent material, the subsequent staff can view the position marked inside the fixed sleeve through the fixed sleeve, and then obtain the length of the puncture needle inserted into the human body by viewing the position parallel to the scale mark, so that the marked position can real-time feedback the puncture depth of the puncture needle, thereby improving the safety of the subsequent puncture needle during the puncture process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic top view structure of the present invention;

[0020] Figure 2 is a schematic front view structure of the present invention;

[0021] Figure 3 is a schematic bottom view structure of the present invention;

[0022] Figure 4 is the enlarged view of part A in the present invention Figure 1 ;

[0023] Figure 5 is the enlarged view of part B in the present invention Figure 3 ;

[0024] Figure 6 is the schematic diagram of the bottom structure of the vascular ultrasound probe of the present invention

[0025] Reference numerals: 1, support plate; 2, fixing mechanism; 201, side plate; 202, motor 1; 203, top plate; 204, bottom plate; 205, motor 2; 206, directional pulley; 207, screw rod 1; 208, bidirectional threaded rod; 3, U-shaped support plate; 4, limiting rod; 5, positioning mechanism; 501, sliding plate; 502, three-axis robotic arm; 503, puncture guide; 504, U-shaped fixing bracket; 505, fixing sleeve; 506, U-shaped connecting block; 507, rotating block; 508, elastic cushion; 6, puncture needle; 7, limiting mechanism; 701, nut; 702, screw rod 2; 8, visualization mechanism; 801, L-shaped bracket; 802, display screen; 803, vascular ultrasound probe; 9, mark; 10, scale mark; 11, control panel Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention

[0028] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance

[0029] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0030] As Figures 1 to 6 shown, a puncture positioning device for interventional treatment of liver cirrhosis portal hypertension includes a support plate 1 and a puncture needle 6. A card slot is opened on the front surface of the support plate 1. A positioning mechanism 5 for improving the stability of the puncture needle 6 during use is slidably connected inside the card slot of the support plate 1. A positioning card slot is opened on the upper surface of the support plate 1. A limiting mechanism 7 is arranged inside the positioning card slot of the support plate 1. A visualization mechanism 8 is arranged inside the puncture needle 6. A groove is opened on the lower surface of the support plate 1. A fixing mechanism 2 is installed inside the groove of the support plate 1;

[0031] Specifically, by starting the positioning mechanism 5 to perform real-time contrast monitoring on the patient's liver area, subsequent staff can plan the route during the process of pushing the puncture needle 6 for puncture, thereby improving the stability of the puncture process; by pushing the positioning mechanism 5 to drive the puncture needle 6 to rotate at multiple angles at the front end of the positioning mechanism 5, the device can adapt to different anatomical structures and puncture angles during subsequent use, thus improving the practicability of the device; by the elastic device inside the positioning mechanism 5 abutting against the outer surface of the puncture needle 6 to increase the friction during the downward sliding of the puncture needle 6, the positioning mechanism 5 restricts the downward movement speed of the puncture needle 6 during the puncture process, thereby slowing down the movement speed of the subsequent puncture needle 6 during use, and thus improving the safety of the device during the subsequent puncture process.

[0032] As Figures 1 to 4 shown, the positioning mechanism 5 includes a sliding plate 501. The sliding plate 501 is slidably connected inside the card slot of the support plate 1. A three-axis robotic arm 502 is arranged on the upper surface of the sliding plate 501. A puncture guide 503 is installed and clamped at the adjustment end of the three-axis robotic arm 502. Grooves are opened on the left and right sides of the puncture guide 503. A U-shaped fixing frame 504 is rotatably connected inside the two groups of grooves of the puncture guide 503. A groove is opened on the front surface of the U-shaped fixing frame 504. A U-shaped connecting block 506 is rotatably connected inside the groove of the U-shaped fixing frame 504. Through holes are opened on the inner walls of the left and right sides of the U-shaped connecting block 506. A rotating block 507 is rotatably connected inside the two groups of through holes of the U-shaped connecting block 506. A groove is opened on the upper surface of the rotating block 507. A fixing sleeve 505 is arranged inside the groove of the rotating block 507. An elastic cushion layer 508 is adhered to the inner wall of the fixing sleeve 505. The puncture needle 6 is slidably connected inside the elastic cushion layer 508;

[0033] Specifically, when the position of the subsequent sliding plate 501 is adjusted and moved to the patient's neck or upper abdomen, the three-axis robotic arm 502 is activated to drive the three-axis robotic arm 502 to push the puncture guide 503 to move, so that the monitoring surface of the puncture guide 503 is attached to the patient's skin surface, enabling the puncture guide 503 to perform real-time contrast monitoring on the patient's liver area. Furthermore, during the puncture process of the subsequent staff pushing the puncture needle 6, a planned route can be carried out, thereby improving the stability of the puncture process; by pushing the fixed sleeve 505 to drive the U-shaped connecting block 506 to rotate left and right on the front side of the U-shaped fixing frame 504, and driving the rotating block 507 to rotate back and forth inside the U-shaped connecting block 506, the fixed sleeve 505 and the puncture needle 6 can be adjusted and moved at multiple angles during use, so that the device can adapt to different anatomical structures and puncture angles during subsequent use, thus improving the practicality of the device;

[0034] At the same time, due to the good elasticity of the elastic cushion 508, the inner wall of the elastic cushion 508 is attached and abutted against the outer surface of the puncture needle 6 during use. Furthermore, the elastic cushion 508 restricts the downward movement speed of the puncture needle 6 during the puncture process, thereby slowing down the movement speed of the subsequent puncture needle 6 during use, thus improving the safety of the device during the subsequent puncture process.

[0035] As Figure 2 and Figure 6 shown, the visualization mechanism 8 includes an L-shaped bracket 801 and a vascular ultrasound probe 803. A groove is provided on the upper surface of the sliding plate 501. The L-shaped bracket 801 is rotatably connected inside the groove of the sliding plate 501. A through hole is provided on the upper surface of the L-shaped bracket 801. A display screen 802 is rotatably connected inside the through hole of the L-shaped bracket 801. The vascular ultrasound probe 803 is installed inside the bottom end of the puncture needle 6. An electrical connection is made between the output end of the vascular ultrasound probe 803 and the access end of the display screen 802;

[0036] Specifically, by starting the vascular ultrasound probe 803, the image of the puncture needle 6 piercing the human body's venous duct is transmitted to the display screen 802, so that the subsequent display screen 802 can display the blood vessels and tissue structures in real time, and then the subsequent visualization mechanism 8 can provide practical visual assistance to the staff, thereby greatly improving the success rate of the transjugular portal shunt TIPS from the hepatic vein to the portal vein, thereby improving the practicality of the device; by pushing the L-shaped bracket 801 to drive the L-shaped bracket 801 to rotate on the upper end of the slide plate 501, and then by pushing the display screen 802 to drive the display screen 802 to rotate on the upper surface of the L-shaped bracket 801, the position angle of the display screen 802 during use can be adjusted and moved, so that the subsequent medical staff can timely check the real-time image displayed on the display screen 802 during the puncture operation.

[0037] like Figure 4 and Figure 6 As shown, a mark 9 is provided on the outer surface of the puncture needle 6, and a scale mark 10 is provided on the outer surface of the fixed sleeve 505, and the material of the fixed sleeve 505 is a white transparent acrylic plate material; specifically, the material of the fixed sleeve 505 is a transparent material, so that the subsequent staff can view the position of the mark 9 inside the fixed sleeve 505 through the fixed sleeve 505, and then obtain the length of the puncture needle 6 inserted into the human body by checking the position of the mark 9 parallel to the scale mark 10, so that the position of the mark 9 can provide real-time feedback on the puncture depth of the puncture needle 6, thereby improving the safety of the subsequent puncture needle 6 during the puncture process.

[0038] like Figure 1 As shown, the limiting mechanism 7 includes a second screw rod 702, which is slidably connected to the inside of the positioning slot of the support plate 1, and the lower surface of the nut 701 is installed on the upper surface of the slide plate 501. The external thread of the second screw rod 702 is connected to the nut 701, and the lower surface of the nut 701 abuts against the upper surface of the support plate 1; specifically, by rotating the nut 701 to abut the lower surface of the nut 701 against the upper surface of the support plate 1, the limiting mechanism 7 limits the sliding position of the slide plate 501 in the slot of the support plate 1, thereby minimizing the movement of the slide plate 501 in the slot of the support plate 1 during the use of the subsequent positioning mechanism 5, thereby improving the stability of the subsequent positioning mechanism 5 during use.

[0039] like Figure 2 , Figure 3 and Figure 5As shown in the figure, the fixing mechanism 2 includes a bidirectional threaded rod 208 and a first motor 202. Through holes are formed in the inner walls on the left and right sides of the groove of the support plate 1. The bidirectional threaded rod 208 is rotatably connected inside the two through holes of the support plate 1. The first motor 202 is installed on the right side of the support plate 1, and the output shaft of the first motor 202 is installed on the right side of the bidirectional threaded rod 208. Two side plates 201 are threadedly connected to the outside of the bidirectional threaded rod 208. Top plates 203 are installed on the adjacent sides of the two side plates 201. Card slots are formed on the adjacent sides of the two side plates 201. Through holes are formed in the bottom and top inner walls of the card slots of the two side plates 201. Two first screws 207 are rotatably connected inside the two through holes of the two side plates 201. Second motors 205 are installed on the lower surfaces of the two side plates 201, and the output shafts of the two second motors 205 are respectively installed on the lower surfaces of the two first screws 207. Bottom plates 204 are threadedly connected to the outside of the two first screws 207. The two bottom plates 204 are respectively slidably connected inside the card slots of the two side plates 201. Directional pulleys 206 are installed on the lower surfaces of the two top plates 203, the upper surfaces of the two bottom plates 204, and the adjacent sides of the two side plates 201;

[0040] Specifically, when the subsequent support plate 1 is placed at the upper end of the hospital bed, by starting the first motor 202, the bidirectional threaded rod 208 is triggered to drive the two side plates 201 to move, and the adjacent sides of the left and right directional pulleys 206 are respectively abutted against the left and right sides of the hospital bed edge. Then, by pressing the support plate 1, the lower surfaces of the two top directional pulleys 206 are respectively abutted against the upper surface of the hospital bed edge. And by starting the two second motors 205, the two first screws 207 are triggered to drive the two bottom plates 204 and the two bottom directional pulleys 206 to move upward, and the upper surfaces of the two bottom directional pulleys 206 are respectively abutted against the lower surface of the hospital bed edge, so that the subsequent fixing mechanism 2 positions and installs the positioning mechanism 5 at the upper end of the hospital bed, thereby reducing the use area occupied by the subsequent positioning mechanism 5 in the ward during use, resulting in the inability of medical staff to move around freely. Therefore, the practicability of the subsequent device during use is improved; by starting the fixing mechanism 2 to position and install the positioning mechanism 5 at the upper end of the hospital bed, the fixing mechanism 2 restricts the moving position of the positioning mechanism 5 during use, thereby minimizing the movement of the subsequent positioning mechanism 5 and the support plate 1 during use. Therefore, the stability of the positioning mechanism 5 during use is improved.

[0041] Meanwhile, the positions of the two sets of side plates 201 and the two sets of bottom plates 204 can be adjusted and moved, so that the subsequent fixing mechanism 2 can be clamped and positioned at the outer ends of multiple hospital beds with different models, thereby expanding the positioning range of the subsequent fixing mechanism 2; the rollers inside the six sets of directional pulleys 206 are respectively abutted against the outer surface of the hospital bed, so that the subsequent staff can drive the six sets of directional pulleys 206 to roll at the outer end of the hospital bed edge by pushing the support plate 1, and then enable the subsequent medical staff to quickly adjust and move the position of the support plate 1 at the upper end of the hospital bed, thereby shortening the time and labor consumed by the subsequent medical staff when adjusting and moving the position of the support plate 1.

[0042] As Figures 1 to 3 shown, U-shaped support plates 3 are arranged on the lower surfaces of the two sets of side plates 201, and the positions of the two sets of motors two 205 are respectively located inside the two sets of U-shaped support plates 3; specifically, when the subsequent device is idle, the positions of the two sets of motors two 205 are respectively located inside the two sets of U-shaped support plates 3, and then the lower surfaces of the two sets of U-shaped support plates 3 are placed and attached to the ground by carrying and moving the support plate 1, so that the two sets of U-shaped support plates 3 support the support plate 1 when it is placed on the upper end of the ground, thereby improving the stability of the subsequent device when it is idle and placed on the upper end of the ground.

[0043] As Figures 1 to 3 shown, grooves are opened on one side of the two sets of U-shaped support plates 3 adjacent to each other, and limit rods 4 are inserted into the grooves of the two sets of U-shaped support plates 3; specifically, after the fixing mechanism 2 is installed at the outer end of the hospital bed, the limit rod 4 is inserted into the two grooves of the U-shaped support plate 3 by pushing the limit rod 4, so that the limit rod 4 restricts the corresponding positions between the two sets of U-shaped support plates 3 and the two sets of side plates 201, thereby improving the service strength of the subsequent two sets of side plates 201 during use, and thus improving the service life of the fixing mechanism 2.

[0044] As Figures 1 to 3 shown, control panels 11 are installed on the left and right sides of the support plate 1, and the control panels 11 are electrically connected to the control ends of the positioning mechanism 5, the visualization mechanism 8 and the fixing mechanism 2; specifically, by operating the control panel 11 to start the positioning mechanism 5, the visualization mechanism 8 and the fixing mechanism 2, and then the positions of the two control panels 11 are respectively set on the left and right sides of the support plate 1, so that the subsequent medical staff do not need to run back and forth during the process of operating the device, thereby reducing the labor consumed by the subsequent medical staff when operating the device, and thus improving the practicability of the device.

[0045] In summary: by starting the three-axis robotic arm 502 to drive the three-axis robotic arm 502 to push the puncture guide 503 to move, the monitoring surface of the puncture guide 503 is attached to the patient's skin surface, so that the puncture guide 503 can perform real-time imaging monitoring of the patient's liver area, so that subsequent staff can plan the route during the puncture needle 6, thereby improving the stability of the puncture process; by pushing the fixed sleeve 505 to drive the U-shaped connecting block 506 to rotate left and right on the front side of the U-shaped fixed frame 504, and drive the rotating block 507 to rotate back and forth inside the U-shaped connecting block 506, the fixed sleeve 505 and the puncture needle 6 can be adjusted and moved at multiple angles during use, so that the subsequent device can adapt to different anatomical structures and puncture angles during use.

[0046] At the same time, by starting the vascular ultrasound probe 803, the image of the puncture needle 6 piercing the human body's venous duct is transmitted to the display screen 802, so that the subsequent display screen 802 can display the blood vessels and tissue structures in real time, and then the subsequent visualization mechanism 8 can provide practical visual assistance to the staff, thereby greatly improving the success rate of the transjugular portal shunt TIPS from the hepatic vein to the portal vein; by pushing the L-shaped bracket 801 to drive the L-shaped bracket 801 to rotate on the upper end of the slide plate 501, and then by pushing the display screen 802 to drive the display screen 802 to rotate on the upper surface of the L-shaped bracket 801, the position angle of the display screen 802 during use can be adjusted and moved, so that the subsequent medical staff can timely check the real-time image displayed on the display screen 802 during the puncture operation.

[0047] In addition, by starting the motor 1 202 to trigger the bidirectional threaded rod 208 to drive the two groups of side plates 201 to move, the adjacent sides of the left and right groups of directional pulleys 206 are respectively abutted against the left and right sides of the edge of the bed, and then by pressing the support plate 1, the lower surfaces of the two groups of directional pulleys 206 at the top are respectively abutted against the upper surface of the edge of the bed, and by starting the two groups of motors 205 to trigger the two groups of screws 1 207 to drive the two groups of bottom plates 204 and the two groups of directional pulleys 206 at the bottom to move upward, the upper surfaces of the two groups of directional pulleys 206 at the bottom are respectively abutted against the lower surface of the edge of the bed, so that the subsequent fixing mechanism 2 positions the positioning mechanism 5 at the upper end of the bed, thereby reducing the use area occupied by the subsequent positioning mechanism 5 in the ward during use; by starting the fixing mechanism 2 to position the positioning mechanism 5 at the upper end of the bed, the fixing mechanism 2 limits the moving position of the positioning mechanism 5 during use, thereby minimizing the movement of the subsequent positioning mechanism 5 and the support plate 1 during use.

[0048] The foregoing has shown and described 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 by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A puncture positioning device for interventional treatment of portal hypertension in cirrhosis of the liver, comprising a support plate (1) and a puncture needle (6), characterized in that: The front side of the support plate (1) is provided with a slot, and a positioning mechanism (5) is slidably connected inside the slot of the support plate (1) to improve the stability of the puncture needle (6) during use; the upper surface of the support plate (1) is provided with a positioning slot, and a limiting mechanism (7) is arranged inside the positioning slot of the support plate (1); a visualization mechanism (8) is arranged inside the puncture needle (6); the lower surface of the support plate (1) is provided with a groove, and a fixing mechanism (2) is installed inside the groove of the support plate (1).

2. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 1, characterized in that: The positioning mechanism (5) comprises a slide plate (501), the slide plate (501) is slidably connected to the inside of the card slot of the support plate (1), a three-axis mechanical arm (502) is arranged on the upper surface of the slide plate (501), a puncture guide (503) is mounted and connected to the adjustment end of the three-axis mechanical arm (502), grooves are provided on the left and right sides of the puncture guide (503), a U-shaped fixing frame (504) is rotatably connected to the inside of the two groups of grooves of the puncture guide (503), a groove is provided on the front side of the U-shaped fixing frame (504), and the U-shaped A U-shaped connecting block (506) is rotatably connected inside the groove of the fixing frame (504), and through holes are provided on the inner walls on both sides of the U-shaped connecting block (506). A rotating block (507) is rotatably connected inside the two groups of through holes of the U-shaped connecting block (506), and a groove is provided on the upper surface of the rotating block (507). A fixing sleeve (505) is arranged inside the groove of the rotating block (507), and an elastic cushion layer (508) is bonded to the inner wall of the fixing sleeve (505), and the puncture needle (6) is slidably connected inside the elastic cushion layer (508).

3. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 2, characterized in that: The visualization mechanism (8) comprises an L-shaped bracket (801) and a vascular ultrasound probe (803); a groove is provided on the upper surface of the slide plate (501); the L-shaped bracket (801) is rotatably connected to the inside of the groove of the slide plate (501); a through hole is provided on the upper surface of the L-shaped bracket (801); a display screen (802) is rotatably connected to the inside of the through hole of the L-shaped bracket (801); the vascular ultrasound probe (803) is installed inside the bottom end of the puncture needle (6); and an output end of the vascular ultrasound probe (803) and an input end of the display screen (802) are electrically connected.

4. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 2, characterized in that: The outer surface of the puncture needle (6) is provided with a mark (9), the outer surface of the fixed sleeve (505) is provided with a scale mark (10), and the material of the fixed sleeve (505) is a white transparent acrylic plate material.

5. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 2, characterized in that: The limiting mechanism (7) comprises a second screw rod (702), the second screw rod (702) being slidably connected to the inside of a positioning slot of the support plate (1), the lower surface of the nut (701) being mounted on the upper surface of the slide plate (501), the outer thread of the second screw rod (702) being connected to the nut (701), and the lower surface of the nut (701) being in contact with the upper surface of the support plate (1).

6. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 1, characterized in that: The fixing mechanism (2) comprises a bidirectional threaded rod (208) and a motor (202); through holes are provided on the inner walls of the left and right sides of the groove of the support plate (1); the bidirectional threaded rod (208) is rotatably connected to the two groups of through holes of the support plate (1); the motor (202) is mounted on the right side of the support plate (1); the output shaft of the motor (202) is mounted on the right side of the bidirectional threaded rod (208); the external threads of the bidirectional threaded rod (208) are connected to two groups of side plates (201); the adjacent sides of the two groups of side plates (201) are both equipped with top plates (203); the adjacent sides of the two groups of side plates (201) are both equipped with slots; the slots of the two groups of side plates (201) are connected to the outer threads of the bidirectional threaded rod (208); the top plates (203) are both installed on the adjacent sides of the two groups of side plates (201); ... top plates (203) are both installed on the adjacent sides of the two groups of side plates (201); the top plates (203) are connected to the outer threads of the bidirectional threaded rod (208); the top plates (203) are connected to the Through holes are provided at the bottom and the top of the inner wall. Two groups of screw rods (207) are rotatably connected inside the two groups of through holes of the two groups of side plates (201). Motors (205) are installed on the lower surfaces of the two groups of side plates (201). The output shafts of the two groups of motors (205) are installed on the lower surfaces of the two groups of screw rods (207). The external threads of the two groups of screw rods (207) are connected to the bottom plates (204). The two groups of bottom plates (204) are slidably connected inside the slots of the two groups of side plates (201). Directional pulleys (206) are installed on the lower surfaces of the two groups of top plates (203), the upper surfaces of the two groups of bottom plates (204) and the adjacent sides of the two groups of side plates (201).

7. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 6, characterized in that: The lower surfaces of the two groups of side plates (201) are both provided with U-shaped support plates (3), and the positions of the two groups of motors 2 (205) are respectively located inside the two groups of U-shaped support plates (3).

8. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 7, characterized in that: A groove is provided on one adjacent side of the two groups of U-shaped support plates (3), and a limiting rod (4) is inserted into the interior of the grooves of the two groups of U-shaped support plates (3).

9. The puncture positioning device for interventional treatment of portal hypertension in cirrhosis according to claim 1, characterized in that: Control panels (11) are installed on the left and right sides of the support plate (1), and the control panel (11) is electrically connected to the control ends of the positioning mechanism (5), the visualization mechanism (8) and the fixing mechanism (2).

Images