Radial artery hemostat for critical medical patient

Abstract

The invention belongs to the technical field of medical instruments, and particularly provides a radial artery hemostat for critical medical patients, which is composed of a wrist strap, a frame, a host bottom plate, a power mechanism, a one-way valve, an observation window, a pressing piece, an alarm device and a switch. According to the device, a motor drives a gear and a threaded rod to transmit, a sliding pipe is driven to push a pressure piston in a hydraulic pipe, and liquid is pressed into a pressing bin to push a pressing piece for pressing; pressure is monitored through the force sensitive resistor, and when the pressure is too large, the alarm device is automatically triggered to give an audible and visual alarm; the reverse rotation of the motor is matched with the electromagnet to open the one-way valve to automatically relieve the pressure, and the popping shifting rod can be pulled in emergency to quickly pop out the host bottom plate. The device integrates accurate hydraulic driving, pressure monitoring and alarming, convenient operation and rapid first-aid separation, and the problems that an existing radial artery hemostat is not accurate in pressure control, lacks an alarming mechanism and is complex in operation are effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically referring to a radial artery hemostat for critically ill patients. Background Technology

[0002] In the fields of critical care medicine and interventional therapy, radial artery puncture is a common clinical procedure. Effective hemostasis at the puncture site post-procedure is crucial for preventing complications. However, existing hemostasis techniques still face several technical bottlenecks in practical application. First, traditional manual compression hemostasis relies on the nurse's experience and physical strength; the pressure applied is difficult to quantify precisely and requires prolonged duration, easily leading to bleeding or subcutaneous hematoma due to insufficient pressure, or ischemia or even necrosis of the distal limb due to excessive pressure. Second, existing mechanical hemostatic devices are mostly simple spiral compression devices, lacking a real-time pressure feedback mechanism and unable to dynamically adjust according to changes in intravascular pressure, posing certain safety risks. Furthermore, when rapid decompression of the hemostatic site is required, existing devices are often cumbersome to operate, failing to achieve instantaneous pressure release, increasing patient discomfort and nursing difficulty.

[0003] Therefore, there is an urgent need to design a radial artery hemostat for critically ill patients that can achieve precise hydraulic drive, has a pressure alarm function, and is easy to operate. Summary of the Invention

[0004] To address the aforementioned technical problems and overcome the shortcomings of existing technologies, this invention provides a radial artery hemostat for critically ill patients, aiming to solve the problems of inaccurate pressure control, lack of alarm mechanisms, and complex operation of existing radial artery hemostats.

[0005] The technical solution adopted in this invention is as follows: This solution provides a radial artery hemostat for critically ill patients, which consists of a wristband, frame, main unit base plate, power mechanism, one-way valve, pressing plate, alarm device and switch.

[0006] The frame is a rectangular metal frame. A pair of sliding grooves are fixedly provided on the upper wall of the frame. A main spring is fixedly provided at the end of the inner wall of the sliding groove. A T-shaped pop-out lever is slidably provided on the side wall of the sliding groove. A lever spring is fixedly sleeved on the outside of the pop-out lever. The other end of the lever spring is fixedly connected to the outer wall of the frame.

[0007] The wristband is fixedly mounted on the lower wall of the frame and its tightness is adjustable. The outer surface of the wristband is fixedly provided with Velcro.

[0008] The base plate of the main unit is rectangular. The side wall of the base plate slides in a sliding groove with the upper wall of the frame. A pair of locking flanges are fixedly provided on the side wall of the base plate. The locking flanges engage with the pop-out lever.

[0009] A power mechanism is fixedly mounted on the upper wall of the main unit base plate. The power mechanism includes a motor fixedly mounted on the upper wall of the main unit base plate, a large gear rotatably mounted on the upper wall of the main unit base plate, a sliding tube slidably mounted on the upper wall of the main unit base plate, a hydraulic pipe fixedly mounted on the upper wall of the main unit base plate, and a pressure piston slidably mounted within the hydraulic pipe. The hydraulic pipe, the sliding tube, and the large gear are coaxial. A small gear is coaxially fixedly mounted on the motor output shaft, meshing with the large gear for transmission. A threaded rod is coaxially fixedly mounted on the side wall of the large gear. A threaded hole is formed inside the sliding tube, meshing with the threaded rod for transmission.

[0010] The pressure piston consists of a piston body, a piston rod coaxially fixed to the piston body, and a force-sensitive resistor, a piston spring, a gasket, and an adjusting nut sequentially movably sleeved on the piston rod. The piston body is slidably sealed inside the hydraulic pipe, the piston rod is coaxially fixed to the side wall of the piston body, and the piston rod is threaded. The piston rod and the adjusting nut are engaged by the thread, and the sliding pipe and the gasket are in contact engagement.

[0011] The one-way valve is fixedly installed on the upper wall of the base plate of the main unit. One end of the one-way valve is fixedly connected to a hose, and the other end of the one-way valve away from the hose is coaxially fixedly sleeved with an electromagnet. The other end of the hose is fixedly connected to a hydraulic pipe.

[0012] A circular observation window is fixedly installed on the upper wall of the base plate of the main unit. The cross-section of the observation window is two rings, and the cavity between the two rings is a pressing chamber. The upper part of the pressing plate is a cylindrical tube, and the lower part is a transparent elliptical sheet. The pressing plate is slidably disposed in the pressing chamber. A through hole is opened on the side wall of the observation chamber, and the through hole is connected to a one-way valve through a flexible tube.

[0013] An alarm device, including an LED light and a buzzer, is fixedly installed on the upper wall of the main unit's base plate. A switch with three positions is also slidably installed on the upper wall of the main unit. The switch, motor, force-sensitive resistor, electromagnet, and alarm device are electrically connected.

[0014] Furthermore, the hose may not be connected to the hydraulic hose, the motor, large gear, and sliding tube are not in operation, and the hose is connected to a regular medical needle tube, with the pressure controlled manually.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The present invention achieves continuous and stable pressure on the radial artery puncture point through hydraulic transmission and motor drive, and the pressure is transmitted evenly, avoiding the problem of uneven pressure force in manual compression.

[0017] (2) The present invention sets up a pressure monitoring and alarm system based on force-sensitive resistors, which can trigger an audible and visual alarm in time when the pressing pressure is too large, effectively preventing complications such as limb ischemia caused by excessive pressure and improving safety;

[0018] (3) This invention utilizes an electromagnet to control the opening and closing of a one-way valve, combined with the forward and reverse rotation of a motor, to achieve electrified automatic control of pressurization and depressurization. It is easy to operate and greatly reduces the workload of medical staff. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a radial artery hemostat for critically ill patients proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the frame structure in this invention;

[0021] Figure 3 This is a cross-sectional schematic diagram of the cooperation between the frame and the main unit base plate in this invention;

[0022] Figure 4 This is a schematic diagram of the structure of the motor, large gear, sliding tube, hydraulic tube, and pressure piston in this invention;

[0023] Figure 5 This is a schematic cross-sectional view of the sliding tube in this invention;

[0024] Figure 6 This is a schematic diagram of the structure of the large gear in this invention;

[0025] Figure 7 This is a schematic diagram of the pressure piston in this invention;

[0026] Figure 8 This is a schematic cross-sectional view of the one-way valve and electromagnet in this invention.

[0027] Figure 9 This is a schematic diagram of the pressing tablet structure in this invention;

[0028] Figure 10 This is a schematic cross-sectional view of the observation window in this invention.

[0029] Figure 11 This is a circuit diagram of the motor, force-sensitive resistor, switch, electromagnet, and alarm device in this invention;

[0030] Figure 12 This is a schematic diagram showing the connection between the medical needle and the one-way valve in this invention.

[0031] The components include: 1. Wristband; 11. Velcro; 2. Frame; 21. Sliding groove; 22. Main unit spring; 23. Pop-up lever; 24. Lever spring; 3. Main unit base plate; 31. Locking flange; 4. Power mechanism; 41. Motor; 411. Pinion; 42. Gear; 42. Threaded rod; 43. Sliding tube; 431. Threaded hole; 44. Hydraulic pipe; 45. Pressure piston; 451. Plug; 452. Plug rod; 453. Piston spring; 454. Force-sensitive resistor; 455. Gasket; 456. Adjusting nut; 46. Medical needle; 5. One-way valve; 51. Hose; 52. Electromagnet; 6. Observation window; 61. Press chamber; 7. Pressing plate; 8. Alarm device; 81. LED light; 82. Buzzer; 9. Switch.

[0032] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-11 This embodiment provides a radial artery hemostat for critically ill patients, which consists of a wristband 1, a frame 2, a main unit base plate 3, a power mechanism 4, a one-way valve 5, an observation window 6, a pressing plate 7, an alarm device 8, and a switch 9.

[0035] The frame 2 is a rectangular metal frame. A pair of sliding grooves 21 are fixedly provided on the upper wall of the frame 2. A main spring 22 is fixedly provided at the inner end of the sliding groove 21. A T-shaped pop-out lever 23 is slidably provided on the side wall of the sliding groove 21. A lever spring 24 is fixedly sleeved on the outside of the pop-out lever 23. The other end of the lever spring 24 is fixedly connected to the outer wall of the frame 2. The wristband 1 is fixedly provided on the lower wall of the frame 2 and can be adjusted. A Velcro strap 11 is fixedly provided on the outer surface of the wristband 1.

[0036] The main unit base plate 3 is rectangular. The side wall of the main unit base plate 3 is slidably engaged with the sliding groove 21 of the upper wall of the frame 2. A pair of locking flanges 31 are fixedly provided on the side wall of the main unit base plate 3. The locking flanges 31 are engaged with the pop-out lever 23.

[0037] A power mechanism 4 is fixedly installed on the upper wall of the main unit base plate 3. The power mechanism 4 includes a motor 41 fixedly installed on the upper wall of the main unit base plate 3, a large gear 42 rotatably installed on the upper wall of the main unit base plate 3, a sliding tube 43 slidably installed on the upper wall of the main unit base plate 3, a hydraulic tube 44 fixedly installed on the upper wall of the main unit base plate 3, and a pressure piston 45 slidably installed inside the hydraulic tube 44. The hydraulic tube 44, the sliding tube 43, and the large gear 42 are coaxial.

[0038] A small gear 411 is coaxially fixed on the output shaft of the motor 41. The small gear 411 meshes with the large gear 42 for transmission. A threaded rod 421 is coaxially fixed on the side wall of the large gear 42. A threaded hole 431 is opened in the sliding tube 43. The threaded rod 421 meshes with the threaded hole 431 for transmission.

[0039] The pressure piston 45 consists of a piston body 451, a piston rod 452 coaxially fixed to the piston body 451, and a force-sensitive resistor 454, a piston spring 453, a washer 455, and an adjusting nut 456 sequentially movably sleeved on the piston rod 452. The piston body 451 is slidably sealed within the hydraulic pipe 44. The piston rod 452 is coaxially fixed to the side wall of the piston body 451. The piston rod 452 has threads, and the piston rod 452 is threadedly connected to the adjusting nut 456. The washer 455 abuts against the sliding pipe 43.

[0040] The one-way valve 5 is fixedly installed on the upper wall of the base plate 3 of the main unit. One end of the one-way valve 5 is fixedly connected to a hose 51, and the other end of the one-way valve 5 away from the hose 51 is coaxially fixedly sleeved with an electromagnet 52. The other end of the hose 51 is fixedly connected to a hydraulic pipe 44.

[0041] A circular observation window 6 is fixedly installed on the upper wall of the main unit base plate 3. The cross-section of the observation window 6 is two circular rings, and the cavity between the two circular rings is a pressing chamber 61. The upper part of the pressing plate 7 is a cylindrical tube, and the lower part is a transparent elliptical sheet. The pressing plate 7 is slidably disposed in the pressing chamber 61. A through hole is opened on the side wall of the observation window 6, and the pressing chamber 61 is connected to the one-way valve 5 through the through hole.

[0042] An alarm device 8 is fixedly installed on the upper wall of the main unit base plate 3. The alarm device 8 includes an LED light 81 and a buzzer 82 fixedly installed on the upper wall of the main unit base plate 3. A switch 9 with three positions is also slidably installed on the upper wall of the main unit base plate 3. The switch 9, motor 41, force-sensitive resistor 454, electromagnet 52 and alarm device 8 are electrically connected.

[0043] The specific usage process of this solution is as follows:

[0044] First, place frame 2 on the area where the patient needs to stop bleeding, then adjust the tightness of wristband 1, and after adjustment, fasten Velcro 11 to fix frame 2.

[0045] Then, slide the main unit base plate 3 in the sliding groove 21 on the upper wall of the frame 2 to the designated position. The pop-out lever 23 engages with the locking flange 31 under the elastic force of the lever spring 24, locking the main unit base plate 3.

[0046] Next, rotate the adjusting nut 456 on the pressure piston 45 to set the maximum pressing pressure.

[0047] After setting, switch 9 to the second position, motor 41 is powered on, output shaft rotates, pinion 411 meshes with gear 42 for transmission, gear 42 drives threaded rod 421 fixed on the same axis to rotate, threaded rod 421 rotates and drives sliding tube 43 to move forward, sliding tube 43 contacts gasket 455 on pressure piston 45, pressure is transmitted forward through piston spring 453, driving plug 451, i.e. pressure piston 45, to slide forward in hydraulic tube 44, pressure piston 45 pushes liquid in hydraulic tube 44 through hose 51 through check valve 5, and then through check valve 5 into pressure chamber 61 in observation window 6, pushing pressure plate 7 in pressure chamber 61 to move downward, operator can observe patient hemostasis through through hole in the middle of observation window 6 and transparent pressure plate 7.

[0048] If the pressure is too high, that is, the sum of the spring preload on the force-sensitive resistor 454 and the pressure on the sliding tube 43 is greater than the preset value, the current in the circuit increases, reaching the conduction current of the LED light 81 and the buzzer 82, the alarm device 8 branch is turned on, the buzzer 82 in the alarm device 8 sounds, and the LED light 81 lights up.

[0049] To release the pressure, switch 9 to the third position. The motor 41 reverses and the electromagnet 52 is energized. The electromagnet 52 attracts the valve core of the one-way valve 5, allowing the liquid in the one-way valve 5 to flow in the reverse direction, thus slowly releasing the pressure on the pressing plate 7.

[0050] When a patient encounters an emergency requiring procedures such as radial artery puncture, both ejector levers 23 can be pulled outwards simultaneously. The ejector levers 23 can then disengage from the locking flange 31, allowing the main unit base plate 3 and the components mounted on it to pop out quickly under the elastic force of the main unit spring 22, facilitating emergency measures.

[0051] Example 2: This example is based on Example 1, except that in this example, the hose 51 in the power mechanism 4 is not connected to the hydraulic pipe 44, the motor 41, the large gear 42 and the sliding pipe 43 are not working, and the hose 51 is connected to the ordinary medical needle tube 46.

[0052] Please see Figures 1-12In this embodiment, the medical needle 46 is connected to the one-way valve 5 via the tubing 51. Pushing the piston forward drives the pressing pad 7 to press down on the hemostatic site. At the same time, the one-way valve 5 prevents liquid backflow, thus releasing the pressure. This second embodiment is suitable for situations where there is a lack of power or when components such as the motor 41 in the first embodiment are accidentally damaged.

[0053] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A radial artery hemostat for critically ill patients, comprising a frame (2) and a wristband (1) fixedly disposed on the lower wall of the frame (2), characterized in that, It also includes a main unit base plate (3) that is slidably mounted on the upper wall of the frame (2), a power mechanism (4) that is fixedly mounted on the upper wall of the main unit base plate (3), a one-way valve (5) that is fixedly mounted on the upper wall of the main unit base plate (3), an observation window (6) that is fixedly mounted on the upper wall of the main unit base plate (3), a pressing piece (7) that is slidably mounted in the observation window (6), an alarm device (8) that is fixedly mounted on the upper wall of the main unit base plate (3), and a switch (9) that is slidably mounted on the upper wall of the main unit base plate (3). The power mechanism (4) is fixedly connected to the one-way valve (5), and the power mechanism (4) is connected to the observation window (6) through the one-way valve (5). The power mechanism (4) and the pressing piece (7) are hydraulically driven through the one-way valve (5) and the observation window (6).

2. The radial artery hemostat for critically ill patients according to claim 1, characterized in that, The power mechanism (4) includes a motor (41) fixedly mounted on the upper wall of the main unit base plate (3), a large gear (42) rotatably mounted on the upper wall of the main unit base plate (3), a sliding tube (43) slidably mounted on the upper wall of the main unit base plate (3), a hydraulic tube (44) fixedly mounted on the upper wall of the main unit base plate (3), and a pressure piston (45) slidably mounted in the hydraulic tube (44).

3. The radial artery hemostat for critically ill patients according to claim 2, characterized in that, The output shaft of the motor (41) is coaxially fixed with a small gear (411), which meshes with a large gear (42) for transmission. The side wall of the large gear (42) is coaxially fixed with a threaded rod (421), which is threadedly connected to the inner wall of the sliding tube (43).

4. The radial artery hemostat for critically ill patients according to claim 3, characterized in that, The pressure piston (45) consists of a piston body (451), a piston rod (452) coaxially fixed at one end of the piston body (451), and a force-sensitive resistor (454), a piston spring (453), a gasket (455), and an adjusting nut (456) sequentially movably sleeved on the piston rod (452). The piston rod (452) and the adjusting nut (456) are threaded together, and the sliding tube (43) and the gasket (455) are in contact.

5. A radial artery hemostat for critically ill patients according to claim 4, characterized in that, One end of the one-way valve (5) is fixedly connected to a hose (51), and the other end of the one-way valve (5) away from the hose (51) is coaxially fixedly sleeved with an electromagnet (52).

6. A radial artery hemostat for critically ill patients according to claim 5, characterized in that, The hose (51) is fixedly connected to the hydraulic pipe (44).

7. A radial artery hemostat for critically ill patients according to claim 5, characterized in that, The power mechanism (4) also includes a medical needle (46).

8. A radial artery hemostat for critically ill patients according to claim 1, characterized in that, The observation window (6) has a cross-section of two rings, and the cavity between the two rings is a pressing chamber (61). The pressing chamber (61) is connected to the one-way valve (5) through a pipe, and the pressing plate (7) is slidably disposed in the pressing chamber (61).

Images