First-aid device for relieving SAM symptoms

Abstract

The utility model discloses a first-aid device used for relieving SAM symptoms, which comprises a lead puncture sheath tube, a first-aid device is arranged in the lead puncture sheath tube, the first-aid device comprises a hollow sheath tube with an inclined top end, a channel is arranged on the tube wall of the hollow sheath tube, a jacking component is mounted in the hollow sheath tube, and a propelling component is arranged at the bottom end of the hollow sheath tube. The bottom end of the jacking assembly is connected with the top end of the pushing assembly, a main supporting strip and an auxiliary supporting strip of the jacking assembly can open and close the elastic umbrella cover, the pushing assembly is used for pushing the jacking assembly forwards to enable the jacking assembly to stretch out of the top end of the hollow sheathing canal to open the elastic umbrella cover, an anti-falling plate is further arranged at the bottom end of the hollow sheathing canal, and the pushing assembly is inserted into the anti-falling plate. The device is reasonable in structure and easy and convenient to operate, is applied to the first-aid operation of the SAM symptom patient, and can be used for rapidly jacking up the mitral valve anterior lobe to be separated from the ventricular septum, widening the left ventricular outflow tract and win time for the subsequent treatment of the patient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and relates to a first-aid device, in particular to a first-aid device for relieving the SAM sign. Background Art

[0002] The SAM sign is a sign in M-mode ultrasound diagnosis, which refers to the systolic anterior motion of the anterior mitral leaflet. It means that the CD segment of the anterior mitral leaflet in systole is not a slow rising platform, but an abnormal waveform protruding upward (towards the interventricular septum). This phenomenon is called systolic anterior motion (SAM).

[0003] The normal mitral valve and blood flow movement of the heart are as Figure 1 (systole) and Figure 2 (diastole) shown. In the normal heart diastole, the mitral valve opens, and blood flows from the left atrium 8 into the left ventricle 11. In systole, the mitral valve closes, the aortic valve 7 opens, and blood flows from the left ventricle 11 into the aorta 6. The heart promotes the blood to flow in a certain direction through this rhythmic activity and the resulting regular opening and closing of the valves. The mechanism of the SAM phenomenon may be: ① The left ventricular outflow tract 13 is narrow, the blood flow velocity is accelerated, attracting the anterior mitral leaflet 9 and the chordae tendineae to move forward, that is, the Venturi effect; ② Due to the basal part of the interventricular septum 12 protruding into the left ventricular outflow tract 13, resulting in a change in the blood flow direction (moving backward) during systole, forcing the anterior mitral leaflet 9 into the left ventricular outflow tract 13; ③ Due to the anterior movement of the papillary muscle, etc., the distance between the mitral valve closing point and the interventricular septum (CS) is reduced. When the heart contracts, the anterior mitral leaflet 9 tilts and moves forward.

[0004] When a patient with hypertrophic cardiomyopathy has a strong SAM sign, as Figure 3 shown, due to the thickening of the basal part of the interventricular septum, the blood flow direction from the heart to the left ventricular outflow tract 13 during systole moves backward. At the same time, the residual edge of the anterior mitral leaflet 9 folds into the left ventricular outflow tract 13, resulting in a vortex behind the posterior mitral leaflet 10, further preventing the posterior movement of the anterior mitral leaflet 9, leading to the occurrence of the SAM sign. Due to the incomplete closure of the mitral valve, a large amount of blood flows from the left ventricle 11 back into the left atrium 8, forming a large amount of mitral regurgitation. In summary, the strong SAM sign can cause left ventricular outflow tract obstruction and a large amount of mitral regurgitation, leading to hemodynamic disorders and low cardiac output syndrome. Delayed diagnosis may lead to incorrect treatment plans, and drug treatment may be ineffective. Therefore, early detection and timely application of the SAM sign relief device are the core of rescuing such patients.

[0005] Currently, the drug treatment for severe SAM sign is rapid fluid replacement and vasoactive drugs for blood pressure elevation, but the drug reaction may not be effective, leading to death. In addition, extracorporeal membrane oxygenation (ECMO) can be used to replace the cardiopulmonary function, but this device is expensive and has many complications, and it cannot solve the problem at the root, only providing temporary alternative treatment. Surgical thoracotomy to repair the mitral valve may also be effective, but this method has large trauma, high risk of emergency surgery, and a long preparation time, which may cause the death of the patient. Therefore, there is an urgent need for a first-aid device for relieving severe SAM sign that is simple to operate and has small trauma. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a first-aid device for relieving SAM sign, which can solve the technical problems of the existing cumbersome operation, large trauma, high risk, and many complications.

[0007] To solve the above technical problems, the present utility model is implemented by adopting the following technical solutions:

[0008] A first-aid device for relieving SAM sign, including a guiding puncture sheath tube. A guiding channel is axially opened in the guiding puncture sheath tube, passing through both ends of the guiding puncture sheath tube. An emergency device is arranged in the guiding channel.

[0009] The emergency device includes a hollow sheath tube. The top end of the hollow sheath tube is a bevel structure. The tube wall of the hollow sheath tube is axially provided with a plurality of channels penetrating the tube wall at equal intervals. A jacking component is installed in the hollow sheath tube. The bottom end of the hollow sheath tube extends out of the bottom end of the guiding puncture sheath tube and is provided with a pushing component.

[0010] The jacking component includes a main support bar, a plurality of auxiliary support bars, and an elastic umbrella surface. The main support bar and the elastic umbrella surface are both arranged inside the hollow sheath tube. The plurality of auxiliary support bars are respectively arranged in the corresponding channels. The top ends of the auxiliary support bars extend out of the top end of the hollow sheath tube and are connected to the edge of the elastic umbrella surface. The top end of the main support bar is connected to the lower surface of the elastic umbrella surface. The bottom ends of the main support bar and the auxiliary support bars are connected to the top end of the pushing component.

[0011] The hollow sheath tube can move along the guiding channel in the guiding puncture sheath tube, and both ends of the hollow sheath tube extend out of both ends of the guiding puncture sheath tube.

[0012] The present utility model further includes the following technical features:

[0013] The described propulsion assembly includes a propulsion disc. A main propulsion rod is fixedly installed at the central position of the propulsion disc, and a plurality of auxiliary propulsion rods corresponding to the channels are installed at the edge of the propulsion disc. The bottom ends of the main propulsion rod and the auxiliary propulsion rods are fixedly installed on the upper surface of the propulsion disc. The top end of the main propulsion rod extends into the hollow sheath tube and is connected to the bottom end of the main support bar. The top end of the auxiliary propulsion rod extends into the corresponding channel and is connected to the bottom end of the auxiliary support bar. A push handle is installed on the lower surface of the propulsion disc.

[0014] The described guiding puncture sheath tube includes a guiding sheath tube and a puncture needle coaxially and integrally arranged. The guiding channel is coaxially arranged inside the guiding sheath tube. A guiding outlet is opened on the side wall of the puncture needle. The bottom end of the guiding channel penetrates through the bottom end of the guiding sheath tube. The top end of the guiding channel is connected to the guiding outlet through an arc-shaped channel. A guiding outlet positioning assembly is arranged at the bottom end of the guiding sheath tube.

[0015] The described guiding outlet positioning assembly includes a holding sleeve sleeved on the bottom end of the guiding sheath tube. A positioning protrusion is arranged on the outer side wall of the holding sleeve. The positioning protrusion and the guiding outlet are arranged on the same side, and the straight line where the center point of the positioning protrusion and the center point of the guiding outlet are located is in the same plane as the axis of the guiding puncture sheath tube.

[0016] A marking line is arranged on the propulsion disc, and the marking line is in the same direction as the end inclined surface of the hollow sheath tube.

[0017] An anti-detachment plate is sleeved on the bottom end of the hollow sheath tube. A first through hole is opened at the central position of the anti-detachment plate. The top end of the main propulsion rod passes through the first through hole and extends into the hollow sheath tube. An anti-detachment convex block is integrally and coaxially arranged on the main propulsion rod.

[0018] Second through holes corresponding to the channels are also opened on the anti-detachment plate. The top ends of the auxiliary propulsion rods pass through the second through holes and extend into the corresponding channels. Sealing rings are arranged on the inner surfaces of the first through hole and the second through holes.

[0019] The channel includes an integrally arranged straight section and an arc section. The bottom end of the arc section is connected to the top end of the straight section, and the top end of the arc section is infinitely close to the outer wall of the hollow sheath tube.

[0020] The diameter of the guiding channel is larger than the outer diameter of the anti-detachment plate.

[0021] The outer diameter of the guiding sheath tube is 3 mm, the length of the guiding sheath tube is 20 - 25 cm, the diameters of the guiding channel and the arc-shaped channel are 2.7 - 2.8 mm, the length from the center point of the guiding outlet to the top end of the puncture needle is 1 cm, the inner diameter of the hollow sheath tube is 1.7 mm, the wall thickness of the hollow sheath tube is 0.6 - 0.8 mm, and the length of the hollow sheath tube is 30 - 35 cm; the diameter of the channel is 0.4 - 0.5 mm, and the outer diameter of the anti-disengagement plate is 2.6 mm.

[0022] The length of the main support bar is 26 - 31 cm, the length of the auxiliary support bar is 28 - 33 cm, the diameters of the main push rod and the auxiliary push rod are 0.3 mm, and the lengths of the main push rod and the auxiliary push rod are 4 - 6 cm.

[0023] The included angle between the top inclined plane of the hollow sheath tube and the cross-section of the hollow sheath tube is 45° - 60°.

[0024] The angular range of the central angle of the arc segment is 15° - 45°.

[0025] Compared with the prior art, the utility model has the following technical effects:

[0026] (Ⅰ) The structure of the utility model is reasonable, the operation is simple, and it is suitable for patients with strong SAM sign considered clinically. In the utility model, the wire puncture sheath tube plays a role in guiding the puncture of the first aid equipment, and the guiding outlet positioning component ensures that the first aid equipment is accurately transported to the operation position. Then, the jacking component is pushed out of the hollow sheath tube to the upper part of the fitting point between the anterior mitral leaflet and the interventricular septum through the pushing component. The equal-spacing distribution of the channel, the auxiliary support bar, and the auxiliary push rod enables the device to maintain stability during use and apply force evenly, ensuring that the elastic umbrella surface will not be torn due to uneven force. The main support bar and the main push rod apply a supporting force and a pulling force to the elastic umbrella surface from the middle part. With the cooperation of each component, the elastic umbrella surface is smoothly unfolded, and then an upward force is effectively applied to the anterior mitral leaflet to lift it, separating the anterior mitral leaflet from the interventricular septum, widening the left ventricular outflow tract, enabling the blood to flow smoothly into the aorta, achieving the first aid effect, and winning time for the subsequent treatment of the patient.

[0027] (Ⅱ) The setting of the arc segment in the channel of the utility model plays a guiding role in the bending direction of the auxiliary support bar, ensuring that the auxiliary support bar flips away from the axis direction of the hollow sheath tube, and thus ensuring that the elastic umbrella surface can be smoothly unfolded.

[0028] (Ⅲ) The utility model also sets an anti-disengagement device. The anti-disengagement plate and the anti-disengagement convex block can effectively prevent the pushing component from falling off the hollow sheath tube due to improper operation, delaying the first aid time and affecting the treatment effect.

[0029] (Ⅳ) In order to avoid the wire puncture sheath causing harm to the myocardium or endocardium during the operation of the first aid device, after the wire puncture sheath completes its puncture guiding function, it can be withdrawn from the patient's body along the hollow sheath, ensuring the safety of the device during use. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the mitral valve and blood flow movement during the normal cardiac systolic phase.

[0031] Figure 2 It is a schematic diagram of the mitral valve and blood flow movement during the normal cardiac diastolic phase.

[0032] Figure 3 It is a schematic diagram of the mitral valve and blood flow movement during the cardiac systolic phase in hypertrophic cardiomyopathy with a strong SAM sign.

[0033] Figure 4 It is a schematic diagram of the overall device structure of the present utility model.

[0034] Figure 5 It is a cross-sectional view of the guiding sheath of the present utility model.

[0035] Figure 6 It is a schematic diagram of the structure of the first aid device of the present utility model when not in use.

[0036] Figure 7 It is a schematic diagram of the structure of the first aid device of the present utility model when in use.

[0037] Figure 8 It is a cross-sectional view of the first aid device of the present utility model when not in use.

[0038] Figure 9 It is a cross-sectional view of the first aid device of the present utility model when in use.

[0039] Figure 10 It is a cross-sectional view of the overall device of the present utility model when in use.

[0040] Figure 11 It is a reference diagram of the usage state when the guiding puncture sheath of the present utility model enters the interventricular septum.

[0041] Figure 12 It is a reference diagram of the usage state when the first aid device of the present utility model is installed into the guiding puncture sheath.

[0042] Figure 13 It is a reference diagram of the usage state when the end of the hollow sheath of the present utility model reaches above the contact point between the anterior leaf of the mitral valve and the interventricular septum.

[0043] Figure 14 It is a reference diagram of the usage state when the top-opening component of the present utility model pushes up the anterior leaf of the mitral valve.

[0044] The meanings of the reference numerals in the figure are as follows:

[0045] 1. Hollow sheath tube, 2. Channel, 3. Ejecting assembly, 4. Pushing assembly, 5. Anti-disengagement plate, 6. Aorta, 7. Aortic valve, 8. Left atrium, 9. Anterior mitral leaflet, 10. Posterior mitral leaflet, 11. Left ventricle, 12. Interventricular septum, 13. Left ventricular outflow tract, 14. Ultrasonic probe, 15. Puncture rack, 16. Fitting point of the anterior mitral leaflet and the interventricular septum, 101. Guide sheath tube, 102. Puncture needle, 103. Guide channel, 104. Guide outlet, 105. Arc-shaped channel, 106. Guide outlet positioning assembly;

[0046] 21. Straight segment, 22. Arc segment;

[0047] 31. Main support bar, 32. Auxiliary support bar, 33. Elastic umbrella surface;

[0048] 41. Pushing disk, 42. Main pushing rod, 43. Auxiliary pushing rod, 44. Anti-disengagement convex block, 45. Pushing handle;

[0049] 51. First through hole, 52. Second through hole;

[0050] 1061. Grasping sleeve, 1062. Positioning protrusion.

[0051] The following further elaborates on the specific content of the present utility model in conjunction with embodiments. Specific embodiments

[0052] Complying with the above technical solutions, the following provides specific embodiments of the present utility model. It should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solutions of this application fall within the protection scope of the present utility model.

[0053] In the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "left", "right", etc. generally refer to those defined based on the drawing plane in the corresponding drawings, and "inner" and "outer" refer to the inside and outside of the contour of the corresponding components.

[0054] Embodiment:

[0055] This embodiment provides a first-aid device for relieving the SAM sign, as Figures 4 to 14 shown, including a guiding puncture sheath tube. A guiding channel 103 running through both ends of the guiding puncture sheath tube along the axial direction is provided inside the guiding puncture sheath tube, and first-aid equipment is arranged inside the guiding channel 103;

[0056] The first aid device includes a hollow sheath tube 1. The top end of the hollow sheath tube 1 is of an inclined plane structure. A plurality of channels 2 penetrating the tube wall are arranged at equal intervals along the axial direction of the tube wall of the hollow sheath tube 1. A top-opening assembly 3 is installed inside the hollow sheath tube 1. The bottom end of the hollow sheath tube 1 extends out of the bottom end of the guiding puncture sheath tube and is provided with a propulsion assembly 4;

[0057] The top-opening assembly 3 includes a main support bar 31, a plurality of auxiliary support bars 32 and an elastic umbrella surface 33. The main support bar 31 and the elastic umbrella surface 33 are both arranged inside the hollow sheath tube 1. The plurality of auxiliary support bars 32 are respectively arranged in the corresponding channels 2. The top ends of the auxiliary support bars 32 extend out of the top end of the hollow sheath tube 1 and are connected to the edge of the elastic umbrella surface 33. The top end of the main support bar 31 is connected to the lower surface of the elastic umbrella surface 33. The bottom ends of the main support bar 31 and the auxiliary support bars 32 are connected to the top end of the propulsion assembly 4;

[0058] The hollow sheath tube 1 can move along the guiding channel 103 in the guiding puncture sheath tube, and both ends of the hollow sheath tube 1 extend out of both ends of the guiding puncture sheath tube.

[0059] In this embodiment, the first-aid device for relieving SAM sign needs to be used in cooperation with an ultrasonic probe 14 with a puncture rack 15. A guiding puncture sheath tube is arranged on the puncture rack 15. Under the guidance of the ultrasonic probe 14, the guiding puncture sheath tube is punctured from outside the patient's body into the interventricular septum 12. When the end of the guiding puncture sheath tube is at the same horizontal line above the fitting point 16 between the anterior leaflet of the mitral valve and the interventricular septum and is 3 mm away from the endocardium, the first-aid device is assembled into the guiding puncture sheath tube. When installing, pay attention to making the inclined surface at the top of the hollow sheath tube 1 face the endocardium direction. The hollow sheath tube 1 is inserted from the bottom end of the guiding puncture sheath tube into the guiding channel 103. Finally, the top end of the hollow sheath tube 1 extends out of the guiding puncture sheath tube. Then, continue to push the hollow sheath tube 1. The end inclined surface structure of the hollow sheath tube 1 makes the end of the hollow sheath tube 1 in the shape of a needle head, which can smoothly penetrate the endocardium. Finally, the end of the hollow sheath tube 1 extends into the position above the fitting point 16 between the anterior leaflet of the mitral valve and the interventricular septum. This position is the acting position of the first-aid device. The ejecting assembly 3 is pushed out from the top end of the hollow sheath tube 1 through the pushing assembly 4. The elastic umbrella surface 33 is unfolded into a plane under the action of the main support bar 31 and the auxiliary support bar 32. Through the supporting force of the ejecting assembly 3, the anterior leaflet of the mitral valve 9 is lifted and pushed back by at least 1 cm, quickly separating the interventricular septum 12 from the anterior leaflet of the mitral valve 9, widening the left ventricular outflow tract 13, allowing blood to flow out smoothly, and fixing it until the hemodynamic condition improves, winning time for later treatment. In this embodiment, the auxiliary support bar 32 is made of metal or carbon fiber material, with good toughness and strength. After breaking away from the restraint of the separation channel 2, the auxiliary support bar 32 bends outward away from the axis of the hollow sheath tube 1. The main support bar 31 supports the elastic umbrella surface 33 from the central part. When the elastic umbrella surface 33 extends out from the top end of the hollow sheath tube 1, it is unfolded into a plane under the joint action of the main support bar 31 and the auxiliary support bar 32, which can effectively push open the anterior leaflet of the mitral valve. When recovering the elastic umbrella surface 33, the main support bar 31 applies a pulling force to the elastic umbrella surface 33 from the central part, making it smoothly recover into the hollow sheath tube 1.

[0060] As a preferred solution of this embodiment, in this embodiment, the propulsion assembly 4 includes a propulsion disc 41. A main propulsion rod 42 is fixedly installed at the central position of the propulsion disc 41. A plurality of auxiliary propulsion rods 43 corresponding to the channels 2 are installed at the edge of the propulsion disc 41. The bottom ends of the main propulsion rod 42 and the auxiliary propulsion rods 43 are fixedly installed on the upper surface of the propulsion disc 41. The top end of the main propulsion rod 42 extends into the hollow sheath 1 and is connected to the bottom end of the main support bar 31. The top end of the auxiliary propulsion rod 43 extends into the corresponding channel 2 and is connected to the bottom end of the auxiliary support bar 32. A push handle 45 is installed on the lower surface of the propulsion disc 41. During use, the propulsion disc 41 evenly applies force to the auxiliary propulsion rods 43. Combined with the equidistant distribution of the channels 2, the force for pushing or retracting the entire jacking assembly 3 is balanced. Furthermore, it can prompt the auxiliary support bar 32 to evenly apply force to the edge of the elastic umbrella surface 33, which can not only ensure the flat opening of the elastic umbrella surface 33, but also avoid tearing and breaking of the elastic umbrella surface 33 due to uneven force and failure to achieve the treatment effect. The setting of the push handle 45 facilitates the overall operation.

[0061] Furthermore, a marking line is provided on the propulsion disc 41. The marking line is in the same direction as the end slope of the hollow sheath 1. During use, the marking line facilitates visually judging the direction of the top slope of the hollow sheath 1 to ensure that the jacking assembly 3 can act on the anterior mitral leaflet 9 during further operations.

[0062] As a preferred solution of this embodiment, in this embodiment, the guiding puncture sheath tube includes a guiding sheath tube 101 and a puncture needle 102 which are integrally and coaxially arranged. A guiding channel 103 is coaxially arranged inside the guiding sheath tube 101. A guiding outlet 104 is provided on the side wall of the puncture needle 102. The bottom end of the guiding channel 103 penetrates through the bottom end of the guiding sheath tube 101. The top end of the guiding channel 103 is connected to the guiding outlet 104 through an arc-shaped channel 105. A guiding outlet positioning assembly 106 is provided at the bottom end of the guiding sheath tube 101. It is possible to confirm whether the guiding outlet 104 is on the same horizontal line as above the fitting point 16 between the anterior mitral leaflet and the interventricular septum through the guiding outlet positioning assembly 106 and the ultrasound result. In traditional puncture operations, the guiding sheath tube and the puncture needle core are of a split structure. After puncture, the puncture needle core needs to be withdrawn from the guiding sheath tube before the next step can be carried out. In this device, the guiding sheath tube 101 and the puncture needle 102 are integrally arranged, and the guiding outlet 104 is provided on the side wall of the puncture needle 102. Then, the next step can be carried out without withdrawing the puncture needle core, saving time for first aid. In this embodiment, the hollow sheath 1 is made of titanium alloy steel, which can ensure that the hollow sheath 1 can smoothly enter from the guiding channel 103 into the arc-shaped channel 105, and can also ensure that the hollow sheath 1 has sufficient angle and strength to penetrate the endocardium.

[0063] Specifically, the guiding exit positioning assembly 106 includes a holding sleeve 1061 sleeved on the bottom end of the guiding sheath 101. A positioning protrusion 1062 is provided on the outer side wall of the holding sleeve 1061. The positioning protrusion 1062 and the guiding exit 104 are arranged on the same side. And the straight line where the center point of the positioning protrusion 1062 and the center point of the guiding exit 104 are located is in the same plane as the axis of the guiding puncture sheath. The setting of the positioning protrusion 1062 can visually determine the position of the guiding exit 104. Combined with the ultrasonic image, it is possible to quickly determine whether the guiding exit 104 reaches the operation position. The holding sleeve 1061 is convenient for hand-held operation. During use, the marking line provided on the pushing disc 41 and the positioning protrusion 1062 are in the same axial plane. This setting makes the inclined plane direction of the end of the hollow sheath 1 consistent with the direction of the guiding exit 104, so as to ensure that when the hollow sheath 1 enters the operation above the fitting point 16 between the anterior mitral leaflet and the interventricular septum, the jacking assembly 3 can act on the anterior mitral leaflet 9.

[0064] As a preferred solution of this embodiment, in this embodiment, an anti-detachment plate 5 is further sleeved on the bottom end of the hollow sheath 1. A first through hole 51 is opened at the central position of the anti-detachment plate 5. The top end of the main pushing rod 42 passes through the first through hole 51 and extends into the hollow sheath 1. An anti-detachment convex block 44 is integrally provided at the top end of the main pushing rod 42; a second through hole 52 corresponding to the channel 2 is also opened on the anti-detachment plate 5. The top end of the auxiliary pushing rod 43 passes through the second through hole 52 and extends into the corresponding channel 2. The anti-detachment convex block 44 can prevent the pushing assembly 4 from falling off the hollow sheath 1 due to improper operation. Further, sealing rings (not shown in the figure) are provided on the inner surfaces of the first through hole 51 and the second through hole 52 to prevent blood from oozing out along the hollow sheath 1.

[0065] As a preferred solution of this embodiment, in this embodiment, the channel 2 includes an integrally provided straight section 21 and an arc section 22. The bottom end of the arc section 22 is connected to the top end of the straight section 21. The top end of the arc section 22 is infinitely close to the outer wall of the hollow sheath 1. Under the guidance of the arc section 22, it can be ensured that the auxiliary support strip 32 flips away from the axis of the hollow sheath 1, thereby ensuring that the elastic umbrella surface 33 can be unfolded flat.

[0066] As a preferred solution of this embodiment, in this embodiment, there are at least 4 through holes 2, which are in a cross-symmetric structure. Specifically, the 4 through holes 2 are distributed in an "X" shape on the end face of the top end of the hollow sheath 1. With this structural distribution, it can be avoided that the jacking assembly 3 blocks the tip part of the hollow sheath 1 from penetrating the endocardium, and the 4 auxiliary support strips 32 in the through holes 2 can also apply force to the elastic umbrella surface 33 evenly from four directions, avoiding the elastic umbrella surface 33 being torn due to uneven force.

[0067] As a preferred solution of this embodiment, in this embodiment, the diameter of the guiding channel 103 is larger than the outer diameter of the anti-disengagement plate 5. The combination of this structural setting and the structural setting that the guiding outlet 104 is arranged on the side wall of the puncture needle 102 is to prevent the puncture needle 102 from moving within the interventricular septum 12 when operating the top-opening assembly 3 and the propulsion assembly 4 of the first aid device, so as to avoid causing damage to the myocardium or endocardium. After the first aid device is extended above the fitting point 16 between the anterior leaflet of the mitral valve and the interventricular septum, the guiding puncture sheath can be smoothly withdrawn along the hollow sheath 1 out of the patient's body.

[0068] As a preferred solution of this embodiment, in this embodiment, the outer diameter of the guiding sheath 101 is 3 mm, the length of the guiding sheath 101 is 20 - 25 cm, the diameters of the guiding channel 103 and the arc-shaped channel 105 are 2.7 - 2.8 mm, the length from the center point of the guiding outlet 104 to the top end of the puncture needle 102 is 1 cm, the inner diameter of the hollow sheath 1 is 1.7 mm, the wall thickness of the hollow sheath 1 is 0.6 - 0.8 mm, and the length of the hollow sheath 1 is 30 - 35 cm; the diameter of the channel 2 is 0.4 - 0.5 mm. The settings of the above values can ensure the normal implementation of this device without harming the patient. The setting of the length between the guiding outlet 104 and the top end of the puncture needle 102 facilitates judging whether the guiding outlet 104 reaches the horizontal line above the fitting point 16 between the anterior leaflet of the mitral valve and the interventricular septum from the ultrasonic image.

[0069] As a preferred solution of this embodiment, in this embodiment, the length of the main support bar 31 is 26 - 31 cm, the length of the auxiliary support bar 32 is 28 - 33 cm, the diameters of the main propulsion rod 42 and the auxiliary propulsion rod 43 are 0.3 mm, and the lengths of the main propulsion rod 42 and the auxiliary propulsion rod 43 are 4 - 6 cm. When the first aid device is not in use, the end of the auxiliary support bar 32 is flush with the inclined surface at the end of the channel 2, and the main support bar 31 pulls the elastic umbrella surface 33 from the central position so that it is located within the hollow sheath 1, ensuring that the first aid device will neither be blocked nor cause harm to various organs when entering the human body through the guiding puncture sheath. During the use of the first aid device, the main propulsion rod 42 and the auxiliary propulsion rod 43 push the main support bar 31 and the auxiliary support bar 32 towards the end of the hollow sheath 1, so that the auxiliary support bar 32 extends at least 2 cm out of the end of the channel 2, ensuring that the elastic umbrella surface 33 is fully unfolded.

[0070] As a preferred solution of this embodiment, in this embodiment, the angle between the top inclined surface of the hollow sheath 1 and the cross-section of the hollow sheath 1 is 45° - 60°, and this angle setting can ensure that the top end of the hollow sheath 1 can smoothly penetrate the endocardium.

[0071] As a preferred solution of this embodiment, in this embodiment, the angle range of the central angle α of the arc segment 22 is 15° to 45°. With the above angle setting, the device is suitable for cooperating with elastic umbrella surfaces 33 of different sizes and helps to fully expand them.

[0072] Furthermore, in this embodiment, the umbrella surface of the elastic umbrella surface 33 is square, and the ends of the auxiliary support strips 31 are fixedly connected to the four corners of the elastic umbrella surface 33, applying force evenly from four directions to expand the elastic umbrella surface 33.

[0073] During the actual operation of this embodiment:

[0074] Before using this device, it is necessary to check whether the equipment is complete and whether the connections between various components are tight to ensure the stability and reliability of the entire device and prevent accidental injuries to patients caused by damage to the elastic umbrella surface or detachment of each connection point. Through ultrasound, evaluate whether the patient has systolic anterior motion of the mitral valve and mitral regurgitation volume, and perform SAM sign grading evaluation. If the SAM sign grading is grade III or above, that is, the anterior leaflet 9 of the mitral valve touches the interventricular septum 12 during systole and the contact time is long (> 30% of the systolic phase), or it causes hemodynamic disorders, then consider using this device for first aid.

[0075] The attachment point of the anterior mitral leaflet 9 and the hypertrophied ventricular septum 12 is identified by ultrasound, and the position above the attachment point 16 of the anterior mitral leaflet and the ventricular septum is set as the action position or the umbrella-opening position of the first aid device (i.e., the position where the elastic umbrella surface opens); under the guidance of ultrasound, hold the handle sleeve 1061 and push the wire puncture sheath forward. Under the puncture action of the puncture needle 102, the wire puncture sheath is punctured from outside the patient's body into the ventricular septum 12. According to the positioning protrusion 1062 and the ultrasound image, it is confirmed that the guiding outlet 104 on the side wall of the puncture needle 102 reaches the same horizontal line position above the attachment point 16 of the anterior mitral leaflet and the ventricular septum, and the distance between the guiding outlet 104 and the endocardium is 3 mm. Then, the first aid device is assembled into the wire puncture sheath. Hold the anti-disengagement plate 5 and insert the hollow sheath 1 from the bottom end of the guiding sheath 101 into the guiding channel 103. The hollow sheath 1 enters the arc-shaped channel 105 along the guiding channel 103. Finally, the end of the hollow sheath 1 extends out of the guiding outlet 104 to the outside of the wire puncture sheath. Then, continue to push the hollow sheath 1 so that the end of the hollow sheath 1 breaks through the endocardium and enters the heart cavity. Finally, the end of the hollow sheath 1 is located above the attachment point 16 of the anterior mitral leaflet and the ventricular septum. At this time, the wire puncture sheath can be withdrawn along the hollow sheath 1 to the outside of the patient's body. Then, slowly push the push handle 45. The main push rod 42 and the auxiliary push rod 43 are evenly pushed forward under the action of the push disc 41, pushing the main support bar 31 and the auxiliary support bar 32 forward. The end of the auxiliary support bar 32 extends out of the end of the channel 2, pulling the elastic umbrella surface 33 out of the hollow sheath 1. When the elastic umbrella surface 33 completely extends out of the end of the hollow sheath 1, it unfolds under the action of the main support bar 31 and the auxiliary support bar 32. The propulsion assembly 4 continues to push until the elastic umbrella surface 33 lifts the anterior mitral leaflet 9 by at least 1 cm, separating the anterior mitral leaflet 9 from the ventricular septum 12, widening the left ventricular outflow tract 13, allowing blood to flow smoothly. Fix it until the hemodynamic condition improves, and then perform subsequent treatment. After the patient's condition stabilizes, slowly pull the push handle 45 to retract the jacking assembly 3 into the hollow sheath 1, and finally withdraw the entire device from the patient's body.

Claims

1. A first aid device for relieving SAM syndrome, characterized in that: It comprises a guide puncture sheath tube, in which a guide channel (103) is axially opened and passes through both ends of the guide puncture sheath tube, and emergency equipment is arranged in the guide channel (103); The first aid device comprises a hollow sheath tube (1), the top end of the hollow sheath tube (1) is a sloped structure, a tube wall of the hollow sheath tube (1) is provided with a plurality of channels (2) penetrating the tube wall at equal intervals along the axial direction, a top opening component (3) is installed in the hollow sheath tube (1), and a propulsion component (4) is arranged at the bottom end of the hollow sheath tube (1) extending out of the bottom end of the guide puncture sheath tube; The top opening assembly (3) comprises a main support bar (31), a plurality of auxiliary support bars (32) and an elastic umbrella cover (33); the main support bar (31) and the elastic umbrella cover (33) are both arranged in the tube of the hollow sheath tube (1); the plurality of auxiliary support bars (32) are respectively arranged in corresponding channels (2); the top end of the auxiliary support bar (32) extends out of the top end of the hollow sheath tube (1) and is connected to the edge of the elastic umbrella cover (33); the top end of the main support bar (31) is connected to the lower surface of the elastic umbrella cover (33); and the bottom ends of the main support bar (31) and the auxiliary support bar (32) are connected to the top end of the propulsion assembly (4); The hollow sheath tube (1) can move along the guide channel (103) in the guide puncture sheath tube, and the two ends of the hollow sheath tube (1) extend out of the two ends of the guide puncture sheath tube.

2. The first aid device for relieving SAM syndrome according to claim 1, characterized in that: The propulsion assembly (4) comprises a propulsion disk (41), a main propulsion rod (42) is fixedly installed at the center position of the propulsion disk (41), and a plurality of auxiliary propulsion rods (43) corresponding to the channel (2) are installed at the edge of the propulsion disk (41); the bottom ends of the main propulsion rod (42) and the auxiliary propulsion rod (43) are fixedly installed on the upper surface of the propulsion disk (41), the top end of the main propulsion rod (42) extends into the hollow sheath (1) and is connected to the bottom end of the main support bar (31), the top end of the auxiliary propulsion rod (43) extends into the corresponding channel (2) and is connected to the bottom end of the auxiliary support bar (32), and a pushing handle (45) is installed on the lower surface of the propulsion disk (41).

3. The first aid device for relieving SAM syndrome as claimed in claim 2, characterized in that: The guide puncture sheath comprises a guide sheath (101) and a puncture needle (102) which are coaxially arranged in one piece. The guide channel (103) is coaxially arranged in the guide sheath (101). A guide outlet (104) is provided on the side wall of the puncture needle (102). The bottom end of the guide channel (103) passes through the bottom end of the guide sheath (101). The top end of the guide channel (103) is connected to the guide outlet (104) through an arc channel (105). A guide outlet positioning component (106) is provided at the bottom end of the guide sheath (101). The guide outlet positioning component (106) comprises a holding sleeve (1061) which is sleeved on the bottom end of the guide sheath (101), and a positioning protrusion (1062) is arranged on the outer wall of the holding sleeve (1061). The positioning protrusion (1062) and the guide outlet (104) are arranged on the same side, and the straight line where the center point of the positioning protrusion (1062) and the center point of the guide outlet (104) are located is in the same plane as the axis of the guide puncture sheath; The propulsion disc (41) is provided with a marking line, and the marking line is in the same direction as the inclined surface of the end of the hollow sheath tube (1).

4. The first aid device for relieving SAM syndrome as claimed in claim 3, characterized in that: The bottom end of the hollow sheath tube (1) is provided with an anti-slip plate (5), a first through hole (51) is provided at the center of the anti-slip plate (5), the top end of the main propulsion rod (42) passes through the first through hole (51) and extends into the hollow sheath tube (1), and an anti-slip protrusion (44) is coaxially and integrally provided on the main propulsion rod (42); a second through hole (52) corresponding to the channel (2) is also provided on the anti-slip plate (5), the top end of the auxiliary propulsion rod (43) passes through the second through hole (52) and extends into the corresponding channel (2); the inner surfaces of the first through hole (51) and the second through hole (52) are provided with sealing rings.

5. The first aid device for relieving SAM syndrome according to claim 1, characterized in that: The channel (2) comprises a straight section (21) and an arc section (22) which are integrally arranged, the bottom end of the arc section (22) is connected to the top end of the straight section (21), and the top end of the arc section (22) is infinitely close to the outer wall of the hollow sheath tube (1).

6. The first aid device for relieving SAM syndrome as claimed in claim 4, characterized in that: The diameter of the guide channel (103) is greater than the outer diameter of the anti-slip plate (5).

7. The first aid device for relieving SAM syndrome as claimed in claim 4, characterized in that: The outer diameter of the guide sheath (101) is 3 mm, the length of the guide sheath (101) is 20 to 25 cm, the diameters of the guide channel (103) and the arc channel (105) are 2.7 to 2.8 mm, the length from the center point of the guide outlet (104) to the top of the puncture needle (102) is 1 cm, the inner diameter of the hollow sheath (1) is 1.7 mm, the wall thickness of the hollow sheath (1) is 0.6 to 0.8 mm, and the length of the hollow sheath (1) is 30 to 35 cm; the diameter of the channel (2) is 0.4 to 0.5 mm, and the outer diameter of the anti-drop plate (5) is 2.6 mm.

8. The first aid device for relieving SAM syndrome according to claim 7, characterized in that: The length of the main support bar (31) is 26-31 cm, the length of the auxiliary support bar (32) is 28-33 cm, the diameter of the main propulsion rod (42) and the auxiliary propulsion rod (43) is 0.3 mm, and the length of the main propulsion rod (42) and the auxiliary propulsion rod (43) is 4-6 cm.

9. The first aid device for relieving SAM syndrome according to claim 1, characterized in that: The angle between the top slope of the hollow sheath tube (1) and the cross section of the hollow sheath tube (1) is 45° to 60°.

10. The first aid device for relieving SAM syndrome according to claim 5, characterized in that: The central angle of the arc segment (22) ranges from 15° to 45°.

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