Hemostasis rescue device for department of cardiology

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to a cardiology department hemostasis rescue device which comprises a base, a fixing frame, a supporting seat and an electric push rod and further comprises a pressing assembly and a bag pressing assembly. The pressing bag assembly is arranged at the bottom of the pressing assembly, and when the electric push rod is powered on and started, the pressing assembly is driven to drive the pressing bag assembly to move downwards to be attached to the arm of a patient and conduct pressing hemostasis on a puncture point. And the central capsule body and the peripheral capsule bodies are communicated with each other and are filled with a fluid medium. By means of the pressing assembly and the pressure bag assembly, the pressure on the puncture point can be automatically adjusted through micro-deformation of the skin around the puncture point at the moment that blood permeates into surrounding tissue gaps, and therefore bleeding is avoided, and the vital signs of a high-risk patient are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of medical auxiliary device technology, specifically relating to a hemostasis and rescue device for cardiology. Background Technology

[0002] Cardiology emergency scenarios are often accompanied by unstable vital signs and extreme time pressure. For example, massive bleeding at the puncture site due to an overdose of anticoagulants requires immediate hemostasis to stop the life-threatening bleeding and ensure the patient's safety.

[0003] In cardiac surgery, there are many cases of massive bleeding caused by trauma. If hemostasis and resuscitation are not timely, it can seriously threaten the patient's vital signs. However, conventional hemostasis methods mostly involve medical staff applying pressure, which not only has limited effectiveness but also causes additional pain to the patient. To address these issues, existing technologies offer better solutions, such as a cardiac hemostasis and resuscitation device (publication number CN113017750B). This device achieves hemostasis by rotating a pressure plate parallel to the patient's wound and pressing it down on the wound, improving hemostasis while effectively avoiding additional pain for the patient. However, it still has the following drawbacks: after vascular puncture in high-risk patients, the hemostasis process is not a simple physical closure but involves a complex process of hemodynamic monitoring. However, most existing pressure monitoring devices based on biomedical engineering only focus on the output pressure of the hemostasis device, not the "vascular closure pressure." If the pressure point is not completely coaxial with the vascular rupture, even if the device shows that the pressure is within the target range, blood can still seep into the surrounding tissue spaces, forming a hematoma, which can seriously threaten the vital signs of high-risk patients. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the existing technology by providing a cardiology hemostasis and resuscitation device that solves the problem of blood seeping into the surrounding tissue spaces and forming hematomas even when the pressure is adequate, because the compression point and the ruptured blood vessel are not completely coaxial. Through the designed pressing and compression bladder components, the pressure on the puncture point can be automatically adjusted by utilizing the micro-deformation of the skin around the puncture point the instant blood seeps into the surrounding tissue spaces, thereby preventing bleeding and protecting the vital signs of high-risk patients.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A cardiology hemostasis and resuscitation device includes a base, a fixed frame, a support base, and an electric push rod. The fixed frame is fixedly mounted on the base, and the support base is mounted on the fixed frame. The support base includes two cloth strips, two fixing plates, and two rotating rods. The two ends of each cloth strip are fixedly connected to their respective fixing plates, and each fixing plate is fixedly connected to its respective rotating rod. Both rotating rods are rotatably mounted on the fixed frame. The electric push rod is fixedly mounted on the top of the fixed frame. The device also includes a pressing assembly and a pressure bag assembly, with the pressing assembly positioned above the support base. It is connected to the output end of the electric push rod. The pressure bladder assembly is located at the bottom of the pressing assembly. When the electric push rod is powered on, it drives the pressing assembly to move the pressure bladder assembly down to fit against the patient's arm and press the puncture point to stop bleeding. The pressure bladder assembly includes a central bladder and a peripheral bladder arranged coaxially. The central bladder and the peripheral bladder are connected and both are filled with fluid medium. When a subcutaneous hematoma bulges around the puncture point, the peripheral bladder is compressed and squeezes the fluid medium into the central bladder. When the fluid medium enters the central bladder, the central bladder extends downward and applies pressure to the puncture point.

[0006] Preferably, the pressing assembly includes a connector, a mounting plate, and a sleeve. The connector is disposed at the output end of the electric push rod and its bottom is connected to the mounting plate. The sleeve is disposed at the bottom of the mounting plate. The central bladder is disposed at the bottom of the sleeve, and the bottom of the central bladder is convex downward from the edge to the center.

[0007] It is known that existing pressure heads used for applying pressure to the puncture site on a patient's arm are typically flat, resulting in a large pressure area that affects the concentrated pressure on the puncture site, thus causing discomfort to the skin around the puncture site. Therefore, this solution is adopted. By using a central capsule located at the bottom of the cannula, the downward convex shape of the bottom of the central capsule from the edge to the center achieves concentrated pressure on the puncture site. At the same time, as the pressure increases, the contact area between the central capsule and the skin around the puncture site expands, ensuring effective hemostasis while reducing the pressure on the area around the puncture site, thereby ensuring patient comfort.

[0008] Preferably, the pressure bladder assembly further includes an annular plate and an L-shaped tube. The peripheral bladder is annular with an opening at the top. The annular plate is fixedly disposed at the top opening of the peripheral bladder. The upper end of the L-shaped tube extends into the inside of the sleeve, and the lower end extends through the annular plate into the inside of the peripheral bladder. The fluid medium inside the central bladder and the peripheral bladder fills the sleeve and the L-shaped tube.

[0009] It is known that, due to the constant pressure at the compression point, when bleeding occurs at the puncture site, blood will diffuse subcutaneously and outwards, thus infiltrating into the surrounding tissue spaces to form a hematoma and affecting the patient's vital signs. Therefore, this approach is adopted. By filling the central cyst, peripheral cysts, and L-shaped tube with a fluid medium (a colloidal suspension containing solid and liquid phases, where the solid phase can be nano-sized spherical silica particles and the liquid phase can be a polymer solvent such as ethylene glycol), when there is no bleeding at the puncture site and the bottom of the peripheral cyst is deformed due to skin obstruction, the particles in the fluid medium exhibit a layered and orderly arrangement. When the bottom of the central and peripheral cysts slowly contacts and compresses the skin, the shear force on the fluid medium is low, allowing the bottom of the central and peripheral cysts to maintain contact with the skin surface. Effective fit ensures pressure hemostasis; when slow bleeding at the puncture site leads to hematoma in the surrounding skin, the bottom of the peripheral cyst is deformed by pressure. At this time, the fluid medium enters the cannula and the interior of the central cyst through the L-shaped tube, thereby increasing the pressure inside the central cyst and increasing the pressure of the bottom of the central cyst on the puncture site; when sudden massive bleeding at the puncture site leads to rapid hematoma in the surrounding skin, the sudden pressure on the peripheral cyst increases the shear force on the fluid medium, preventing it from flowing normally, thus inhibiting the deformation of the bottom of the peripheral cyst and preventing sudden massive bleeding at the puncture site.

[0010] Preferably, a rubber strip is provided on the outer surface of the central capsule, and the rubber strip is arranged in a spiral shape.

[0011] By adopting the above scheme, when slow bleeding at the puncture point causes the fluid medium in the peripheral cysts to flow into the central cyst under pressure, the spirally arranged rubber strip can restrict the radial extension of the central cyst, allowing the central cyst to extend axially and slowly apply pressure to the puncture point. This ensures hemostasis while, in conjunction with the centripetal spiral texture, prevents excessive pressure from causing the bottom of the central cyst to slip laterally on the skin surface.

[0012] Preferably, the inner diameter of the horizontal section of the L-shaped tube increases linearly from the inside of the sleeve to the outside, and the inner diameter of the right end of the horizontal section of the L-shaped tube is equal to the inner diameter of the vertical section.

[0013] By adopting the above scheme, the change in the inner diameter of the L-shaped tube can reduce the flow of fluid medium to the peripheral sacs during the process of applying pressure to the puncture point at the bottom of the central sac, thus ensuring the hemostatic effect of the central sac on the puncture point. At the same time, when the fluid medium flows into the central sac due to the deformation of the bottom of the peripheral sacs, the Bernoulli principle can be used to increase the flow rate of the fluid medium flowing out from the upper end of the L-shaped tube, ensuring that the peripheral sacs can effectively compress the surrounding skin in the event of sudden massive bleeding at the puncture point.

[0014] Preferably, the connector includes a connecting rod, a ball head, and a connecting seat. The upper and lower ends of the connecting rod are respectively connected to the output end of the electric push rod and the ball head. The connecting seat is fixedly disposed on the upper surface of the mounting plate and has a ball groove on its top. The ball head is movably sleeved inside the ball groove.

[0015] By adopting the above scheme, the movable connection between the ball head and the ball groove at the top of the connector allows the central capsule to rotate freely under the action of the connector, thereby enabling the bottom of the peripheral capsule to fit more closely to the patient's arm.

[0016] Preferably, a flexible thin-film pressure sensor is provided at the bottom of the peripheral bladder, and both the bottom surface of the peripheral bladder and the flexible thin-film pressure sensor are concave.

[0017] By adopting the above scheme, the bottom of the peripheral sac and the flexible film pressure sensor can cooperate with the ball head and the ball groove, so that the bottom of the peripheral sac fits the skin of the arm better to accommodate the different thicknesses at both ends of the human arm. Under the action of the film pressure sensor, it detects the pressure generated by the skin around the puncture point when the hematoma deforms, and promptly alerts medical staff to bleeding at the puncture point.

[0018] Preferably, the area of ​​the flexible thin-film pressure sensor is larger than the inner radial cross-sectional area of ​​the peripheral bladder.

[0019] By adopting the above scheme, the area of ​​the flexible film pressure sensor can be set to 3 to 5 times the radial cross-sectional area of ​​the inner circle of the peripheral cyst, so that when the peripheral cyst is slightly lifted by the subcutaneous tissue, it drives the central cyst to generate a multiplied axial extension, thereby achieving effective compression hemostasis of the puncture point by the central cyst.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the set pressure bladder assembly, using the interconnected central bladder and peripheral bladders, when slow blood leakage occurs at the puncture point due to pressure deviation or insufficient pressure, causing the surrounding skin to bulge and form a hematoma, the bulging skin will directly compress the peripheral bladders, causing the fluid medium inside the peripheral bladders to be squeezed into the central bladder. This forces the central bladder to extend downward and increase the pressure on the puncture core area, transforming the "harmful expansion force of hematoma formation" into "effective pressure force to enhance hemostasis." Without the need for manual intervention by medical personnel, it automatically corrects the risk of bleeding caused by incomplete coaxiality.

[0021] 2. By using the L-shaped tube and the fluid medium, and utilizing Bernoulli's principle and the shear thickening properties of the fluid medium, when slow bleeding occurs at the puncture site, the fluid medium can flow smoothly under pressure at the bottom of the peripheral sac, allowing the central sac to slowly adhere to the skin and ensuring comfort during treatment. When sudden massive bleeding occurs at the puncture site, the variable diameter structure of the L-shaped tube adjusts the flow rate of the fluid medium, and the viscosity of the fluid medium increases instantaneously, forming "rigid" damping and quickly locking the pressure to prevent sudden massive bleeding.

[0022] 3. A flexible thin-film pressure sensor is used, with its area significantly larger than the radial cross-sectional area of ​​the inner ring of the central capsule. This hydraulic area difference creates an "amplifier" effect, meaning that even slight changes in the height of the surrounding tissue can drive the central capsule to extend axially several times over, thus achieving efficient closure of the hematoma in its early stages. Simultaneously, the spiral rubber strip on the surface of the central capsule guides the expansion force generated by the fluid into a vertically downward axial force, preventing lateral slippage during pressurization and ensuring that the pressure is always precisely applied above the ruptured blood vessel during dynamic pressure adjustments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the pressing component and the pressure bladder component of the present invention; Figure 3 This is a cross-sectional view of the connection structure between the pressing component and the pressure bladder component of the present invention; Figure 4 This is a cross-sectional view of the connection structure of the cannula and pressure bladder assembly of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of part A in the middle section.

[0024] In the diagram: 1. Base; 2. Fixing frame; 3. Support seat; 31. Fabric tape; 32. Fixing plate; 33. Rotating rod; 4. Electric push rod; 5. Pressing assembly; 51. Connector; 511. Connecting rod; 512. Ball head; 513. Connecting seat; 5131. Ball groove; 52. Mounting plate; 53. Sleeve; 6. Pressure bladder assembly; 61. Central bladder; 611. Rubber strip; 62. Peripheral bladder; 621. Flexible thin film pressure sensor; 63. Annular plate; 64. L-shaped tube. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figure 1 , Figure 2 and Figure 3 A cardiology hemostasis and resuscitation device includes a base 1, a fixing frame 2, a support base 3, and an electric push rod 4. The fixing frame 2 is fixedly mounted on the base 1, and the support base 3 is mounted on the fixing frame 2. The support base 3 includes two cloth strips 31, two fixing plates 32, and two rotating rods 33. The two ends of the cloth strips 31 are fixedly connected to the corresponding fixing plates 32, and the two fixing plates 32 are fixedly connected to the corresponding rotating rods 33. Both rotating rods 33 are rotatably mounted on the fixing frame 2. The cloth strips 31 are used to support the patient's arm. The electric push rod 4 is fixedly mounted on the top of the fixing frame 2. The device also includes a pressing assembly 5 and a pressure bag assembly 6. The pressing assembly 5 is located above the support base 3 and connected to the output end of the electric push rod 4. 6 is located at the bottom of the pressing assembly 5. The pressing assembly 5 includes a connector 51, a mounting plate 52, and a sleeve 53. The connector 51 is located at the output end of the electric push rod 4 and its bottom is connected to the mounting plate 52. The sleeve 53 is located at the bottom of the mounting plate 52. The central bladder 61 is located at the bottom of the sleeve 53. The bottom of the central bladder 61 is convex from the edge to the center. The connector 51 includes a connecting rod 511, a ball head 512, and a connecting seat 513. The upper and lower ends of the connecting rod 511 are respectively connected to the output end of the electric push rod 4 and the ball head 512. The connecting seat 513 is fixedly located on the upper surface of the mounting plate 52 and has a ball groove 5131 on its top. The ball head 512 is movably fitted inside the ball groove 5131.

[0027] Under the above-mentioned conditions, when using the device, place the patient's arm on the cloth strip 31, and activate the electric push rod 4 to drive the central capsule 61 downward. During this process, medical staff manually assist the bottom center of the central capsule 61 to contact the puncture point until pressure is applied to the puncture point. As the output end of the electric push rod 4 continues to move downward, when the downward movement of the central capsule 61 is obstructed, the cannula 53 will rotate under the action of the ball groove 5131 and the ball head 512 on the connecting seat 513, so that the center line of the cannula 53 is perpendicular to the patient's arm, thereby expanding the contact area between the peripheral capsule 62 and the patient's arm until the bottom of the central capsule 61 stops the bleeding at the puncture point. At this time, the direction of the pressure force can coincide with the central axis of the connecting seat 513, effectively ensuring the hemostasis effect.

[0028] As one embodiment of the present invention, refer to Figure 1, Figure 4 and Figure 5 The pressure bladder assembly 6 includes a central bladder 61 and a peripheral bladder 62 arranged coaxially. The central bladder 61 and the peripheral bladder 62 are connected and both are filled with fluid medium. A rubber strip 611 is provided on the outer surface of the central bladder 61. The rubber strip 611 is arranged in a spiral shape. The pressure bladder assembly 6 also includes an annular plate 63 and an L-shaped tube 64. The peripheral bladder 62 is annular and has an opening at the top. The annular plate 63 is fixedly installed at the top opening of the peripheral bladder 62. The upper end of the L-shaped tube 64 extends into the inside of the sleeve 53, and the lower end extends into the inside of the peripheral bladder 62 through the annular plate 63. The fluid medium inside the central bladder 61 and the peripheral bladder 62 fills the sleeve 53 and the L-shaped tube 64. The inner diameter of the horizontal section of the L-shaped tube 64 increases linearly from the inside of the sleeve 53 to the outside. The inner diameter of the right end of the horizontal section of the L-shaped tube 64 is equal to the inner diameter of the vertical section.

[0029] Under the aforementioned conditions, on the one hand, when slow bleeding occurs at the puncture site, the skin around the puncture site gradually bulges and compresses the bottom of the peripheral cyst 62. The bottom of the peripheral cyst 62 is compressed, which in turn compresses the fluid medium inside. Utilizing the incompressible property of the fluid medium, some of the fluid medium is forced into the cannula 53 through the L-shaped tube 64. This causes the central cyst 61 to undergo axial deformation under the constraint of the rubber strip 611 on its surface, achieving the effect of automatically applying pressure to the puncture site and preventing slow bleeding. On the other hand, when there is sudden and significant bleeding at the puncture site, the pressure on the bottom of the peripheral cyst 62 increases rapidly. Simultaneously, under the action of Bernoulli's principle, the flow rate of the fluid medium entering the cannula 53 through the L-shaped tube 64 increases, leading to… The shear force on the fluid medium inside the peripheral sac 62 suddenly increases, restricting the normal flow of the fluid medium. This maintains a constant pressure on the puncture site and surrounding skin from the central sac 61 and the peripheral sac 62, preventing sudden massive bleeding and ensuring the patient's vital signs. On the other hand, the spirally arranged rubber strip 611 gradually increases its contact area with the patient's arm when the central sac 61 is obstructed from descending. The spiral effect of the rubber strip 611 achieves pressure on the skin around the puncture site. While ensuring the axial pressure effect of the central sac 61 on the puncture site, it also prevents the bottom of the central sac 61 from slipping off the puncture site due to excessive pressure, further ensuring the hemostatic effect of compression.

[0030] As one embodiment of the present invention, refer to Figure 4A flexible thin-film pressure sensor 621 is provided at the bottom of the peripheral sac 62. The flexible thin-film pressure sensor 621 is connected to an alarm. When the flexible thin-film pressure sensor 621 detects skin bulging, it will sound an alarm to remind the staff that bleeding has occurred at the puncture site. This alarm is existing technology, so it will not be described in detail. The bottom surface of the peripheral sac 62 and the flexible thin-film pressure sensor 621 are both concave. The area of ​​the flexible thin-film pressure sensor 621 is larger than the radial cross-sectional area of ​​the inner circle of the peripheral sac 62.

[0031] Under the above-mentioned conditions, the concave bottom surface of the peripheral sac 62 and the flexible film pressure sensor 621 can fit more closely to the patient's arm, so that the area around the puncture point can be effectively detected when the hematoma bulges, thereby enabling the central sac 61 to react in time and further ensuring the effect of compression hemostasis.

[0032] Working principle: In use, first place the patient's arm on the cloth strip 31, then activate the electric push rod 4 at the top of the fixing frame 2 to drive the pressing component 5 and the pressure bladder component 6 at its bottom to move downwards as a whole. During this process, the ball head 512 in the connector 51 engages with the ball groove 5131 inside the connecting seat 513 on the mounting plate 52, allowing the cannula 53 to rotate freely and adjust its angle when obstructed, ensuring that the center line of the cannula 53 remains perpendicular to the patient's arm, thereby maximizing the contact between the bottom surface of the pressure bladder component 6 and the arm skin. When the convex bottom of the central bladder 61 contacts and presses the puncture point, and the peripheral bladder 62 is in contact with the skin around the puncture point, if the pressure point and the ruptured blood vessel are not completely coaxial, causing blood to slowly seep into the surrounding tissue space and form a subcutaneous hematoma, the raised skin will compress the peripheral bladder 62 and the flexible thin film pressure sensor at its bottom. 621, the fluid medium filling the peripheral cyst 62 is forced to be squeezed into the cannula 53 and the central cyst 61 through the L-shaped tube 64. At this time, under the radial restriction of the spiral rubber strip 611 on the outer surface of the central cyst 61, the central cyst 61 extends axially and applies greater downward pressure to the puncture point, converting the expansion force of the hematoma into the pressure force for hemostasis. If a sudden massive hemorrhage occurs, causing the peripheral cyst 62 to be compressed faster, the flow rate of the fluid medium increases and the shear force increases suddenly when it flows through the variable diameter structure of the L-shaped tube 64. The shear thickening characteristics of the fluid medium form rigid damping, which restricts the flow of the fluid medium and locks the shape of the central cyst 61 and the peripheral cyst 62, preventing pressure failure. Thus, the pressure force is automatically corrected without the need for manual intervention by medical staff, achieving effective hemostasis at the puncture point of high-risk patients.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cardiology hemostasis and resuscitation device, comprising a base (1), a fixing frame (2), a support base (3), and an electric push rod (4), characterized in that: It also includes a pressing component (5) and a pressure bladder component (6). The pressing component (5) is located above the support base (3) and connected to the output end of the electric push rod (4). The pressure bladder component (6) is located at the bottom of the pressing component (5). When the electric push rod (4) is powered on, it drives the pressing component (5) to move the pressure bladder component (6) down to be in contact with the patient's arm and press the puncture point to stop bleeding. The pressure bladder component (6) includes a central bladder (61) and a peripheral bladder (62) arranged coaxially. The central bladder (61) and the peripheral bladder (62) are connected and are both filled with fluid medium. When a subcutaneous hematoma bulges around the puncture point, the peripheral bladder (62) is compressed and squeezes the fluid medium into the central bladder (61). When the fluid medium enters the central bladder (61), the central bladder (61) extends downward and presses the puncture point.

2. The cardiology hemostasis and resuscitation device according to claim 1, characterized in that: The pressing assembly (5) includes a connector (51), a mounting plate (52) and a sleeve (53). The connector (51) is located at the output end of the electric push rod (4) and its bottom is connected to the mounting plate (52). The sleeve (53) is located at the bottom of the mounting plate (52). The central bladder (61) is located at the bottom of the sleeve (53). The bottom of the central bladder (61) is convex from the edge to the center.

3. The cardiology hemostasis and resuscitation device according to claim 2, characterized in that: The pressure bladder assembly (6) also includes an annular plate (63) and an L-shaped tube (64). The peripheral bladder (62) is annular and has an opening at the top. The annular plate (63) is fixedly installed at the top opening of the peripheral bladder (62). The upper end of the L-shaped tube (64) extends into the inside of the sleeve (53), and the lower end extends into the inside of the peripheral bladder (62) through the annular plate (63). The fluid medium inside the central bladder (61) and the peripheral bladder (62) fills the sleeve (53) and the L-shaped tube (64).

4. The cardiology hemostasis and resuscitation device according to claim 1, characterized in that: The outer surface of the central capsule (61) is provided with a rubber strip (611), which is arranged in a spiral shape.

5. A cardiology hemostasis and resuscitation device according to claim 3, characterized in that: The inner diameter of the horizontal section of the L-shaped tube (64) increases linearly from the inside of the sleeve (53) to the outside, and the inner diameter of the right end of the horizontal section of the L-shaped tube (64) is equal to the inner diameter of the vertical section.

6. A cardiology hemostasis and resuscitation device according to claim 2, characterized in that: The connector (51) includes a connecting rod (511), a ball head (512), and a connecting seat (513). The upper and lower ends of the connecting rod (511) are connected to the output end of the electric push rod (4) and the ball head (512), respectively. The connecting seat (513) is fixedly installed on the upper surface of the mounting plate (52) and has a ball groove (5131) on the top. The ball head (512) is movably fitted inside the ball groove (5131).

7. The cardiology hemostasis and resuscitation device according to claim 1, characterized in that: A flexible thin-film pressure sensor (621) is provided at the bottom of the peripheral bladder (62), and both the bottom surface of the peripheral bladder (62) and the flexible thin-film pressure sensor (621) are concave.

8. A cardiology hemostasis and resuscitation device according to claim 7, characterized in that: The area of ​​the flexible thin-film pressure sensor (621) is larger than the inner radial cross-sectional area of ​​the peripheral capsule (62).

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