Guide device for assisting nephrology department puncture sampling

Abstract

The invention relates to the technical field of medical instruments, in particular to a guiding device for assisting nephrology department puncture sampling, which comprises a support plate and a main body, and further comprises a pressure feedback mechanism arranged in the support plate and used for adjusting the needle inserting force of the device according to the skin resistance; the lifting mechanism is arranged in the supporting plate, the lifting degree of the device is adjusted through the lifting mechanism according to the distance between the skin and a kidney target area, pressure is conducted to the fixed air bag in an auxiliary mode through the pressure feedback mechanism and a hydraulic system (an elastic plate, a piston, a cylinder body, a communicating pipe and the like), and the fixed air bag receives pressure generated by skin resistance; and the gas is converted into gas to push the moving rod to slide, so that the resistance value of the slide rheostat is changed, the power of the fixed motor is adjusted in real time, the needle inserting force is adjusted, the needle inserting force can be dynamically matched according to skin resistance, and the accuracy and safety of puncture are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a guiding device for assisting puncture sampling in nephrology. Background Art

[0002] Kidney disease is a common and frequently occurring disease. If it worsens, it can develop into uremia, which seriously endangers people's health. Chronic kidney disease has become another major disease that threatens human health after cardiovascular and cerebrovascular diseases, tumors, and diabetes, and has become a global public health issue. Currently, more than 500 million people in the world suffer from different kidney diseases, and more than one million people die each year from cardiovascular and cerebrovascular diseases related to chronic kidney disease. Sampling is often required during the treatment of kidney diseases.

[0003] Existing nephrology puncture sampling usually uses a handheld puncture needle, which is inserted into the target area of the patient's kidney area perpendicular to the skin to sample the kidney. However, due to the different tissue thicknesses of patients with different body shapes, the resistance of each tissue to the puncture needle is different. It is inconvenient to adjust the speed of the puncture needle according to the resistance of each tissue to the puncture needle. In addition, it is difficult to control the force when manually moving the puncture needle to the target area, which can easily cause the puncture needle to penetrate the entire layer of the kidney, causing secondary damage to the patient. For this reason, we propose a guide device to assist nephrology puncture sampling. Summary of the Invention

[0004] The purpose of the present invention is to provide a guide device for assisting puncture sampling in nephrology, so as to solve the problem proposed in the above background technology that patients of different body shapes have different tissue thicknesses, and the resistance of each tissue causes different resistance to the puncture needle. It is inconvenient to adjust the speed of the puncture needle movement according to the resistance of each tissue to the puncture needle. The puncture needle is manually moved to the target area, and the force is difficult to control during movement, which makes it easy for the puncture needle to penetrate the entire layer of the kidney, causing secondary damage to the patient.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a guide device for assisting puncture sampling in nephrology, comprising: a support plate and a main body,

[0006] The device further comprises: a pressure feedback mechanism, the pressure feedback mechanism being arranged inside the support plate and adjusting the needle insertion force of the device according to the resistance of the skin;

[0007] The lifting mechanism is arranged inside the support plate, and the lifting mechanism adjusts the lifting degree of the device according to the distance between the skin and the kidney target area.

[0008] Among them, the pressure feedback mechanism includes a fixed tube fixedly connected to the inside of the support plate, a moving rod is slidably connected to the inside of the fixed tube, a fixed spring is fixedly connected to the middle of one end of the moving rod, the fixed spring is fixedly connected to the inside of the support plate, the other end of the moving rod is fixedly connected to the sliding rheostat, the sliding rheostat is fixedly connected to the inside of the support plate, one end of the fixed tube is fixedly connected to the first connecting tube, one end of the first connecting tube is fixedly connected to the telescopic tube, one end of the telescopic tube is fixedly connected to the second connecting tube, and one end of the second connecting tube is fixedly connected to the fixed airbag.

[0009] Among them, one side of the fixed airbag is in contact with an extrusion plate, one end of the extrusion plate is fixedly connected to the first piston, the surface of the first piston is slidably connected to the first cylinder, one end of the first cylinder is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to the second cylinder, and the inside of the second cylinder is slidably connected to the second piston.

[0010] The first protection tube is fixedly connected to the surface of the first connecting tube, the second protection tube is fixedly connected to the surface of the second connecting tube, and the second protection tube is slidably connected to the inside of the first protection tube.

[0011] The first connecting pipe is fixedly connected to an air intake pipe on one side close to the fixed pipe, and an electromagnetic one-way valve is provided on the surface of the air intake pipe.

[0012] Among them, the lifting mechanism includes a fixed motor fixedly connected to the inside of the support plate, the output end of the fixed motor is fixedly connected to the ball screw, the inside of the support plate is provided with a first empty groove adapted to the ball screw, the surface of the ball screw is slidably connected to a moving part, the bottom of the moving part is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a placing ring, the inside of the placing ring is fixedly connected to an elastic plate, one end of the elastic plate is fixedly connected to a connecting ring, the inside of the connecting ring is fixedly connected to a puncture needle, and a control device is provided on the side of the support plate close to the fixed motor.

[0013] The second piston is fixedly connected to the other end of the elastic plate, a second slot adapted to the second connecting pipe is provided on the surface of the placement ring, and the fixed airbag is fixedly connected to the inside of the placement ring.

[0014] One side of the support plate is fixedly connected to a rotating member, the surface of the rotating member is rotatably connected to a connecting frame, and the bottom of the connecting frame is fixedly connected to the first fixed plate.

[0015] The surface of the first fixing plate is rotatably connected to a bidirectional threaded rod, and the side of the bidirectional threaded rod close to the first fixing plate is rotatably connected to the second fixing plate.

[0016] Wherein, a placement box is fixedly connected to one side of the main body, and the inner diameter of the placement box is adapted to the connecting frame.

[0017] The present invention has at least the following beneficial effects:

[0018] The present invention uses a pressure feedback mechanism to assist in transmitting pressure to a fixed airbag through a hydraulic system (elastic plate, piston, cylinder, connecting pipe, etc.). The fixed airbag receives the pressure generated by skin resistance and converts it into gas to push the movable rod to slide, thereby changing the resistance value of the sliding rheostat, achieving real-time regulation of the fixed motor power, thereby adjusting the needle insertion force, so that the needle insertion force can be dynamically adapted according to the skin resistance, thereby improving the accuracy and safety of puncture.

[0019] The present invention uses a lifting mechanism and a main unit, with a fixed motor as the power source to drive the ball screw to rotate. The ball screw converts the rotational motion into the linear motion of the moving part. By precisely controlling the motor speed and number of rotations, the moving part can be accurately lifted and lowered on the surface of the ball screw, thereby adjusting the vertical distance between the puncture needle and the skin to adapt to the depth differences between the skin and the kidney target area of different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 It is a top view schematic diagram of the present invention;

[0022] Figure 3 This is a three-dimensional schematic diagram of the support plate of the present invention;

[0023] Figure 4 This is a schematic plan view of the support plate of the present invention;

[0024] Figure 5 It is a planar schematic diagram of the pressure feedback mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross section of the placement ring of the present invention;

[0026] Figure 7 It is a schematic cross-sectional view of the fixed pipe of the present invention.

[0027] Figure: 1, support plate; 2, main body; 3, pressure feedback mechanism; 301, fixed tube; 302, moving rod; 303, fixed spring; 304, sliding rheostat; 305, first connecting tube; 306, telescopic tube; 307, second connecting tube; 308, fixed airbag; 309, extrusion plate; 310, first piston; 311, first cylinder; 312, connecting tube; 313, second cylinder; 314, second piston; 4, lifting mechanism ; 401, fixed motor; 402, ball screw; 403, moving part; 404, connecting rod; 405, placement ring; 406, elastic plate; 407, connecting ring; 408, puncture needle; 409, control device; 5, first protective tube; 6, second protective tube; 7, air inlet pipe; 8, electromagnetic one-way valve; 9, rotating part; 10, connecting frame; 11, first fixed plate; 12, two-way threaded rod; 13, second fixed plate; 14, placement box. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figures 1 to 7 The present invention provides a technical solution: a guide device for assisting puncture sampling in nephrology, comprising: a support plate 1 and a main body 2,

[0031] The device further comprises: a pressure feedback mechanism 3, which is arranged inside the support plate 1 and adjusts the needle insertion force of the device according to the resistance of the skin;

[0032] The lifting mechanism 4 is arranged inside the support plate 1. The lifting mechanism 4 adjusts the lifting degree of the device according to the distance between the skin and the kidney target area.

[0033] The pressure feedback mechanism 3 includes a fixed tube 301 fixedly connected to the inside of the support plate 1, a moving rod 302 is slidably connected to the inside of the fixed tube 301, a fixed spring 303 is fixedly connected to the middle of one end of the moving rod 302, the fixed spring 303 is fixedly connected to the inside of the support plate 1, the other end of the moving rod 302 is fixedly connected to the sliding rheostat 304, the sliding rheostat 304 is fixedly connected to the inside of the support plate 1, one end of the fixed tube 301 is fixedly connected to the first connecting tube 305, one end of the first connecting tube 305 is fixedly connected to the telescopic tube 306, one end of the telescopic tube 306 is fixedly connected to the second connecting tube 307, and one end of the second connecting tube 307 is fixedly connected to the fixed airbag 308.

[0034] The fixed airbag 308 passes the internal gas into the fixed tube 301 through the first connecting tube 305, the telescopic tube 306 and the second connecting tube 307. The gas entering the fixed tube 301 pushes the movable rod 302, causing it to overcome the spring resistance and slide inside the fixed tube 301. The fixed tube 301 and the movable rod 302 form a linear sliding structure. The fixed spring 303 provides a reset elastic force for the movable rod 302. The movement of the movable rod 302 pushes the slider of the sliding rheostat 304 to move. The movement of the slider of the sliding rheostat 304 changes the power of the fixed motor 401, so that the speed of the fixed motor 401 changes, providing real-time data support for the subsequent needle insertion force adjustment.

[0035] One side of the fixed airbag 308 is in contact with an extrusion plate 309, one end of the extrusion plate 309 is fixedly connected to the first piston 310, the surface of the first piston 310 is slidably connected to the first cylinder 311, one end of the first cylinder 311 is fixedly connected to the connecting pipe 312, one end of the connecting pipe 312 is fixedly connected to the second cylinder 313, and the interior of the second cylinder 313 is slidably connected to the second piston 314.

[0036] The elastic plate 406 is deformed by the extrusion force of the connecting ring 407, and the deformation force is converted into mechanical energy, pushing the second piston 314 to move inside the second cylinder 313, pushing the hydraulic oil inside the second cylinder 313 to move, and the connecting pipe 312 transmits the hydraulic pressure to the first cylinder 311. The hydraulic oil entering the first cylinder 311 pushes the first piston 310 to move, and converts the hydraulic energy into mechanical pressure and transmits it to the extrusion plate 309. The fixed airbag 308 serves as the pressure receiving end, and the extrusion plate 309 squeezes the fixed airbag 308.

[0037] The surface of the first connecting tube 305 is fixedly connected to the first protective tube 5, the surface of the second connecting tube 307 is fixedly connected to the second protective tube 6, the second protective tube 6 is slidably connected to the inside of the first protective tube 5, the side of the first connecting tube 305 close to the fixed tube 301 is fixedly connected to the air inlet pipe 7, the surface of the air inlet pipe 7 is provided with an electromagnetic one-way valve 8, the side of the first connecting tube 305 away from the air inlet pipe 7 is fixedly connected to the air outlet pipe (not shown), the surface of the air outlet pipe is provided with a second electromagnetic one-way valve (not shown), and the electromagnetic one-way valve acts on the air outlet.

[0038] The first protective tube 5 and the second protective tube 6 adopt a nested sliding design, which can not only protect the first connecting tube 305 and the second connecting tube 307 from damage by external forces, but also provide stable guidance and support during the extension and retraction of the telescopic tube 306, ensuring the accuracy of pressure transmission. The electromagnetic one-way valve 8 replenishes and exhausts the telescopic tube 306 when the telescopic tube 306 is extended and retracted, maintaining the stability of pressure feedback.

[0039] The lifting mechanism 4 includes a fixed motor 401 fixedly connected to the inside of the support plate 1, and the output end of the fixed motor 401 is fixedly connected to the ball screw 402. A first empty groove adapted to the ball screw 402 is opened inside the support plate 1, and the surface of the ball screw 402 is slidably connected to the moving part 403. The bottom of the moving part 403 is fixedly connected to a connecting rod 404, one end of the connecting rod 404 is fixedly connected to a placing ring 405, and the inside of the placing ring 405 is fixedly connected to an elastic plate 406, one end of the elastic plate 406 is fixedly connected to a connecting ring 407, and the inside of the connecting ring 407 is fixedly connected to a puncture needle 408. A control device 409 is provided on the side of the support plate 1 close to the fixed motor 401.

[0040] The fixed motor 401 is used as a power source to drive the ball screw 402 to rotate. The ball screw 402 converts the rotational motion into the linear motion of the moving part 403. By precisely controlling the motor speed, the moving part 403 can be accurately raised and lowered on the surface of the ball screw 402, thereby adjusting the vertical distance between the puncture needle 408 and the skin to adapt to the depth difference between the skin and the kidney target area of different patients. Wireless transmission modules are respectively installed on the main body 2 and the control device 409. The main body 2 encrypts the marked distance data between the skin and the kidney target area and sends it to the corresponding wireless receiving end of the control device 409 through the wireless transmission module. After receiving the data, the control device 409 decrypts and verifies it to ensure the data The accuracy and completeness of the distance information are then transmitted to the internal control unit to realize the control of the fixed motor 401, control the running time of the fixed motor 401, and stop the operation of the fixed motor 401 after the puncture needle 408 enters the target area (i.e., the renal cortex), so as to prevent the puncture needle 408 from penetrating the entire layer of the kidney. The elastic plate 406 and the connecting ring 407 constitute a flexible connection structure, which plays a buffering role when the puncture needle 408 contacts the skin and during the puncture process, thereby reducing the patient's discomfort, and the elastic plate 406 is fixedly connected to the inside of the placement ring 405, and the elastic plate 406 supports the connecting ring 407 to ensure that the puncture needle 408 does not move. The placement ring 405 provides a stable mounting base for the puncture needle 408.

[0041] The second piston 314 is fixedly connected to the other end of the elastic plate 406 . A second slot adapted to the second connecting tube 307 is provided on the surface of the placement ring 405 . The fixed airbag 308 is fixedly connected to the inside of the placement ring 405 .

[0042] The second empty groove inside the placement ring 405 is adapted to the second connecting tube 307 to ensure the linkage between the pressure feedback mechanism 3 and the puncture needle 408. The placement ring 405 is connected to the moving part 403 through the connecting rod 404, and the movement of the moving part 403 drives the placement ring 405 to move.

[0043] A rotating part 9 is fixedly connected to one side of the support plate 1, and a connecting frame 10 is rotatably connected to the surface of the rotating part 9. The bottom of the connecting frame 10 is fixedly connected to a first fixed plate 11, and a bidirectional threaded rod 12 is rotatably connected to the surface of the first fixed plate 11. The bidirectional threaded rod 12 is rotatably connected to the second fixed plate 13 on the side close to the first fixed plate 11.

[0044] The rotating member 9 and the connecting frame 10 form an angle adjustment mechanism. The rotating member 9 realizes the rotational connection between the support plate 1 and the connecting frame 10. The first fixed plate 11, the bidirectional threaded rod 12 and the second fixed plate 13 form a clamping adjustment mechanism. When the bidirectional threaded rod 12 rotates, it drives the first fixed plate 11 and the second fixed plate 13 to move relative to each other, thereby adjusting the inclination angle and clamping position of the connecting frame 10 to meet different puncture angle requirements and improve the applicability of the device.

[0045] Example 2

[0046] like Figures 1 to 2 In the second embodiment, other structures remain unchanged. The difference from the first embodiment is that a placement box 14 is fixedly connected to one side of the main body 2. The inner diameter of the placement box 14 is adapted to the connecting frame 10. The placement box 14 is used to store the connecting frame 10, so that the device has a compact structure when idle, which is convenient for storage and transportation.

[0047] The above electronic devices are all powered by internal batteries (not shown) or external wires (not shown).

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A guide device for assisting puncture sampling in nephrology, comprising: Support plate and main body, It is characterized by: further comprising: a pressure feedback mechanism, the pressure feedback mechanism being arranged inside the support plate, the pressure feedback mechanism adjusting the needle insertion force of the device according to the resistance of the skin; The lifting mechanism is arranged inside the support plate and adjusts the lifting degree of the device according to the distance between the skin and the kidney target area.

2. The guiding device for assisting puncture sampling in nephrology according to claim 1, characterized in that: The pressure feedback mechanism includes a fixed tube fixedly connected to the inside of the support plate, a moving rod slidably connected to the inside of the fixed tube, a fixed spring fixedly connected to the middle of one end of the moving rod, the fixed spring fixedly connected to the inside of the support plate, the other end of the moving rod fixedly connected to a sliding rheostat, the sliding rheostat fixedly connected to the inside of the support plate, one end of the fixed tube fixedly connected to a first connecting tube, one end of the first connecting tube fixedly connected to a telescopic tube, one end of the telescopic tube fixedly connected to a second connecting tube, and one end of the second connecting tube fixedly connected to a fixed airbag.

3. The guiding device for assisting puncture sampling in nephrology according to claim 2, characterized in that: One side of the fixed airbag contacts an extrusion plate, one end of the extrusion plate is fixedly connected to a first piston, the surface of the first piston is slidably connected to a first cylinder, one end of the first cylinder is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a second cylinder, and the interior of the second cylinder is slidably connected to a second piston.

4. The guiding device for assisting puncture sampling in nephrology according to claim 2, characterized in that: A first protection tube is fixedly connected to the surface of the first connecting tube, a second protection tube is fixedly connected to the surface of the second connecting tube, and the second protection tube is slidably connected to the interior of the first protection tube.

5. The guiding device for assisting puncture sampling in nephrology according to claim 4, characterized in that: An air intake pipe is fixedly connected to one side of the first connecting pipe close to the fixed pipe, and an electromagnetic one-way valve is provided on the surface of the air intake pipe.

6. The guiding device for assisting puncture sampling in nephrology according to claim 3, characterized in that: The lifting mechanism includes a fixed motor fixedly connected to the inside of the support plate, the output end of the fixed motor is fixedly connected to a ball screw, a first empty groove adapted to the ball screw is opened inside the support plate, a moving part is slidably connected to the surface of the ball screw, a connecting rod is fixedly connected to the bottom of the moving part, one end of the connecting rod is fixedly connected to a placement ring, an elastic plate is fixedly connected to the inside of the placement ring, one end of the elastic plate is fixedly connected to the connecting ring, a puncture needle is fixedly connected to the inside of the connecting ring, and a control device is provided on the side of the support plate close to the fixed motor.

7. The guide device for assisting puncture sampling in nephrology according to claim 6, characterized in that: The second piston is fixedly connected to the other end of the elastic plate, a second slot adapted to the second connecting pipe is provided on the surface of the placement ring, and the fixed airbag is fixedly connected to the inside of the placement ring.

8. The guiding device for assisting puncture sampling in nephrology according to claim 1, characterized in that: A rotating member is fixedly connected to one side of the support plate, a connecting frame is rotatably connected to the surface of the rotating member, and a first fixing plate is fixedly connected to the bottom of the connecting frame.

9. The guiding device for assisting puncture sampling in nephrology according to claim 6, characterized in that: A bidirectional threaded rod is rotatably connected to the surface of the first fixing plate, and a side of the bidirectional threaded rod close to the first fixing plate is rotatably connected to the second fixing plate.

10. The guiding device for assisting puncture sampling in nephrology according to claim 9, characterized in that: A placement box is fixedly connected to one side of the main body, and the inner diameter of the placement box is adapted to the connecting frame.

Images