A perfusable aortic occlusion double balloon

Abstract

The application discloses a perfusable aortic occlusion double-balloon, which comprises a perfusion cannula, two occlusion balloons arranged at the front end of the perfusion cannula, a vent arranged on the perfusion cannula surrounded by each occlusion balloon, an elastic bone structure arranged outside the perfusion cannula surrounded by each occlusion balloon, the elastic bone structure being capable of supporting the occlusion balloon outward by deformation, and the elastic bone structure being capable of covering the vent after restoring the original state, a guide wire assembly arranged inside the perfusion cannula and used for driving the two elastic bone structures to deform simultaneously, and a guide air assembly arranged inside the perfusion cannula and having a liquid outlet end located at the position of the vent, the liquid outlet end of the guide air assembly being capable of injecting liquid into the occlusion balloon through the vent, so that the volume of the occlusion balloon is increased to realize occlusion.

Description

Technical Field

[0001] This invention relates to the field of occlusion balloon technology, specifically to an infusionable aortic occlusion double balloon. Background Technology

[0002] Aortic balloon occlusion has been applied to the emergency treatment of massive bleeding in vital organs and junctional areas, as well as cardiopulmonary resuscitation, and is considered to have good prospects. It has the following advantages: it can temporarily stop massive bleeding in vital organs, pelvis, and lower limb junctions, prevent severe hypotensive shock, and reduce the occurrence of cardiac arrest; it can increase coronary perfusion pressure during cardiopulmonary resuscitation, improve the rate of spontaneous circulation recovery in cardiac arrest patients; and it can increase brain perfusion during chest compressions, improving neuroprotective effects.

[0003] Using a double balloon allows for two-point occlusion at different locations in a single operation, thereby minimizing bleeding and harm to the body. Most existing double balloon occlusion devices only use ventilation to inflate the balloons for occlusion. However, due to the distribution of the two balloons, the inflation time of the double balloons is long, which increases the response time to occlusion and affects the timeliness of treatment. Summary of the Invention

[0004] The purpose of this invention is to provide an infusionable aortic occlusion double balloon to solve the key technical problem in the prior art where the double balloon has a long inflation time, which increases the response time to occlusion and thus affects the timeliness of treatment.

[0005] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0006] A perfusion-type aortic occlusion double balloon, comprising:

[0007] The infusion cannula has a hollow internal structure, and two blocking balloons are installed at the front end of the infusion cannula;

[0008] A ventilation port is provided on the perfusion cannula surrounded by each of the blocking balloons;

[0009] An elastic bone structure is disposed on the outside of the perfusion cannula surrounded by each of the blocking balloons. The elastic bone structure expands the blocking balloons outward by deformation, and can cover the ventilation port after the elastic bone structure returns to its original shape.

[0010] The guidewire assembly is disposed inside the irrigation cannula and is used to simultaneously deform the two elastic bone structures.

[0011] An air delivery assembly is disposed inside the infusion cannula, with its liquid outlet located at the air vent. The liquid outlet of the air delivery assembly injects liquid into the blocking balloon through the air vent, thereby increasing the volume of the blocking balloon to achieve occlusion.

[0012] The guidewire assembly moves the elastic bone structure toward the rear end of the perfusion cannula, causing the elastic bone structure to expand the occlusion balloon to temporarily block the aorta. The air delivery assembly inflates the occlusion balloon through the air port, and after inflation, releases the elastic bone structure to restore its original shape and closes the air port, so that the occlusion balloon maintains the occlusion state.

[0013] As a preferred embodiment of the present invention, there are at least two vents, and the vents are distributed in a ring on the infusion cannula. When the elastic bone structure returns to its original shape, the end of the elastic bone structure just blocks the vent. When the elastic bone structure is pulled and deformed by the guidewire assembly, the end of the elastic bone structure moves along the side surface of the infusion cannula to release the vent.

[0014] In a preferred embodiment of the present invention, the elastic bone structure includes a fixed support ring and a movable support ring disposed on the infusion cannula. The fixed support ring is disposed at the rear end of the occlusion balloon, and the movable support ring is disposed at the front end of the fixed support ring. At least two evenly distributed elastic strips are provided between the movable support ring and the fixed support ring. A sealing ring is provided on the inner wall of the movable support ring. The movable support ring can move linearly along the side curved surface of the infusion cannula to drive the elastic strips to deform and support the occlusion balloon or return to being parallel to the infusion cannula.

[0015] As a preferred embodiment of the present invention, the guidewire assembly includes a plurality of pull wires disposed on each of the movable support rings, and a conduction hole disposed on each of the perfusion cannulas. The conduction hole is located at the front end of the fixed support ring. The pull wire passes through the conduction hole into the interior of the perfusion cannulas and extends out through the rear end of the perfusion cannulas.

[0016] As a preferred embodiment of the present invention, the rear end of the infusion cannula is provided with a winding rod, and the wires on the two movable support rings are wound or unwound along the same winding rod;

[0017] The wire has thickened sections on both sides of the conduction hole, and the thickened sections are used to block the conduction hole so that the two ends of the perfusion cannula surrounded by the blocking balloon are in a closed state.

[0018] In a preferred embodiment of the present invention, the conductive hole is an inclined perforation, the inlet end of the conductive hole is located in front of the outlet end of the conductive hole, and the wire drawing is located between two adjacent vents.

[0019] As a preferred embodiment of the present invention, the gas delivery assembly includes a gas delivery tube disposed inside the infusion cannula and a shunt capillary disposed on the gas delivery tube. The distribution positions of the shunt capillary and the air inlet are respectively corresponding. The liquid in the gas delivery tube is transferred to the occlusion balloon through the shunt capillary.

[0020] In a preferred embodiment of the present invention, the diversion capillary is always between two adjacent drawing tubes, and the water outlet of the diversion capillary is located on the air vent. When the movable support ring is pulled, the air vent and the water outlet of the diversion capillary are released to realize the air injection operation.

[0021] In a preferred embodiment of the present invention, the rear end of the infusion cannula is provided with a rubber plug, the pull wire passes through the center of the rubber plug and can move through the rubber plug, the air guide tube passes through the rubber plug, and the air guide tube is offset from the center of the rubber plug.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] This invention first uses a guidewire assembly to pull the elastic bone structure towards the rear end of the perfusion cannula, so that the elastic bone structure expands outward to temporarily block the aorta with the occlusion balloon. The guidewire assembly can simultaneously complete the temporary support work for the two occlusion balloons, thus achieving rapid and effective temporary occlusion. Then, gas is injected into the ventilation port using the gas delivery assembly, so that the occlusion balloon expands as a whole to achieve stable occlusion of the aorta. Attached Figure Description

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the blocking double balloon provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the elastic bone structure provided in an embodiment of the present invention;

[0027] Figure 3This is a schematic diagram of the guidewire assembly provided in an embodiment of the present invention;

[0028] Figure 4 This is a longitudinal cross-sectional view of the air guiding assembly provided in an embodiment of the present invention.

[0029] The labels in the diagram represent the following:

[0030] 1-Irrigation cannula; 2-Ventilation port; 3-Occlusive balloon; 4-Elastic bone structure; 5-Guidewire assembly; 6-Gas delivery assembly; 7-Rubber plug;

[0031] 41-Fixed support ring; 42-Elastic strip; 43-Modible support ring; 44-Sealing ring;

[0032] 51-Wire drawing; 52-Conduction hole; 53-Take-up bar; 54-Thickened section;

[0033] 61-Gas delivery tube; 62-Splitter capillary tube. Detailed Implementation

[0034] 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.

[0035] like Figures 1 to 4 As shown, an infusionable aortic occlusion double balloon includes: an infusion cannula 1, an air inlet 2 disposed on the curved surface of the infusion cannula 1, an elastic bone structure 4 disposed on the periphery of the infusion cannula 1, and a guidewire assembly 5 and an air delivery assembly 6 disposed inside the infusion cannula 1.

[0036] The perfusion cannula 1 has a hollow internal structure, and two blocking balloons 3 are installed at the front end of the perfusion cannula 1.

[0037] Ventilation port 2 is located on the perfusion cannula 1 surrounded by each blocking balloon 3.

[0038] The elastic bone structure 4 is located on the outside of the perfusion cannula 1 surrounded by each occlusion balloon 3. The elastic bone structure 4 expands outward by deforming the occlusion balloon 3, and can cover the ventilation port 2 after the elastic bone structure 4 returns to its original shape.

[0039] The guidewire assembly 5 is located inside the irrigation cannula 1 and is used to drive the two elastic bone structures 4 to deform simultaneously.

[0040] The gas delivery component 6 is located inside the infusion cannula 1, and the liquid outlet is located at the air vent 2. The liquid outlet of the gas delivery component 6 injects liquid into the blocking balloon 3 through the air vent 2, so as to increase the volume of the blocking balloon 3 to achieve blockage.

[0041] The guidewire assembly 5 moves the elastic bone structure 4 toward the rear end of the perfusion cannula 1, so that the elastic bone structure 4 expands outward to temporarily block the aorta with the occlusion balloon 3. The air delivery assembly 6 injects air into the occlusion balloon 3 through the air port 2, and after the air injection is completed, it releases the elastic bone structure 4 to restore its original state and closes the air port 2, so that the occlusion balloon 3 maintains the occlusion state.

[0042] There are at least two ventilation ports 2, and the ventilation ports 2 are distributed in a ring on the irrigation cannula 1. When the elastic bone structure 4 returns to its original shape, the end of it just blocks the ventilation port 2. When the elastic bone structure 4 is pulled and deformed by the guide wire assembly 5, the end of the elastic bone structure 4 moves along the side surface of the irrigation cannula 1 to release the ventilation port 2.

[0043] In this embodiment, using two balloons allows for two-point occlusion at different locations in one go, thereby minimizing bleeding and harm to the body. However, due to the distribution of the two balloons, the balloons require a long time to inflate during ventilation, which increases the response time to occlusion and thus affects the timeliness of treatment.

[0044] To achieve timely treatment, this embodiment adds an elastic bone structure 4 inside the double balloon. During inflation, the elastic bone structure 4 is first moved towards the rear end of the perfusion cannula 1 by the guidewire assembly 5, so that the elastic bone structure 4 expands outward to temporarily block the aorta with the blocking balloon 3, while exposing the ventilation port 2. Then, gas is injected into the ventilation port 2 using the gas delivery assembly 6, so that the blocking balloon 3 expands as a whole to block the aorta.

[0045] Therefore, the elastic bone structure 4, acting as a temporary scaffold, can simultaneously support the front ends of the two blocking balloons 3, thus shortening the response time for blocking operations and improving the effectiveness, safety, and timeliness of treatment.

[0046] Gas is injected into the vent 2 using the gas delivery component 6, causing the blocking balloon 3 to inflate as a whole. The inflated blocking balloon 3 can improve the stability of the block.

[0047] Finally, the tension on the elastic bone structure 4 is released, and the elastic bone structure 4 returns to its original shape under its own rebound force. The movable end of the elastic bone structure 4 can cover the ventilation port 2 again. At this time, the perfusion cannula 1 surrounded by the blocking balloon 3 is in a sealed state. Therefore, the blocking balloon 3 can maintain the collision state and continue to block.

[0048] The elastic bone structure 4 includes a fixed support ring 41 and a movable support ring 43 disposed on the perfusion cannula 1. The fixed support ring 41 is disposed at the rear end of the blocking balloon 3, and the movable support ring 43 is disposed at the front end of the fixed support ring 41. At least two evenly distributed elastic strips 42 are disposed between the movable support ring 43 and the fixed support ring 41. A sealing ring 44 is disposed on the inner wall of the movable support ring 43. The movable support ring 43 can move linearly along the side curved surface of the perfusion cannula 1 to drive the elastic strips 42 to deform and externally support the blocking balloon 3 or return to being parallel to the perfusion cannula 1.

[0049] One end of the elastic bone structure 4 is set on the fixed support ring 41, and the other end is set on the movable support ring 43. The movable support ring 43 can move linearly along the outer periphery of the perfusion cannula 1. When the movable support ring 43 is pulled towards the fixed support ring 41 by the guide wire assembly 5, the elastic strip 42 is pulled and deformed into an arch shape, thereby temporarily opening the blocking balloon 3.

[0050] When the movable support ring 43 is moved away from the fixed support ring 41 by its own elasticity, the elastic strip 42 returns to a straight shape and covers the vent 2 through the sealing ring 44 on the inner wall of the movable support ring 43.

[0051] In a preferred embodiment, the guide wire assembly 5 includes a plurality of pull wires 51 disposed on each movable support ring 43, and a conduction hole 52 disposed on each infusion cannula 1. The conduction hole 52 is located at the front end of the fixed support ring 41. The pull wires 51 pass through the conduction hole 52 into the interior of the infusion cannula 1 and extend out through the rear end of the infusion cannula 1.

[0052] The end of the infusion cannula 1 is provided with a winding rod 53, and the wires 52 on the two movable support rings 43 are wound or unwound along the same winding rod 53.

[0053] The wire 51 has thickened sections 54 on both sides of the conduction hole 52. The thickened sections 54 are used to block the conduction hole 52 so that the two ends of the perfusion cannula 1 surrounded by the blocking balloon 3 are in a closed state.

[0054] The conduction hole 52 is an inclined perforation. The inlet end of the conduction hole 52 is located in front of the outlet end of the conduction hole 52, and the wire 51 is located between two adjacent vents 2.

[0055] The main function of the guide wire assembly 5 is to pull the movable support ring 43 to move. Therefore, in this embodiment, the pull wire 51 is used to pull the movable support ring 43. In order to ensure the sealing of the infusion cannula 1, the pull wire 51 is set to be inside the infusion cannula 1 and passes through the conduction hole 52 and is fixed to the movable support ring 43. In this way, it is only necessary to control the sealing of the conduction hole 52.

[0056] Since the drawing wire 51 has thickened sections 54 on both sides of the conduction hole 52, when the movable support ring 43 is pulled and deformed, the thickened section 54 on the outside of the infusion cannula 1 seals the conduction hole 52. At this time, when air is injected into the blocking balloon 3, the gas will not escape from the conduction hole 52.

[0057] When the release of the wire 51 causes the movable support ring 43 to reset, the thickened section 54 inside the infusion cannula 1 seals the conduction hole 52, and at the same time the sealing ring 44 covers the ventilation port 2. At this time, the infusion cannula 1 surrounded by the blocking balloon 3 is in a relatively closed state, so the gas inside the blocking balloon 3 will not escape, thus improving the stability of the blocking operation.

[0058] As a preferred embodiment, the air delivery assembly 6 includes an air delivery tube 61 disposed inside the infusion cannula 1 and a shunt capillary 62 disposed on the air delivery tube 61. The distribution positions of the shunt capillary 62 and the air inlet 2 are one-to-one. The liquid in the air delivery tube 61 is transferred to the blocking balloon 3 through the shunt capillary 62.

[0059] It should be noted that, since the drawing wire 51 will move linearly inside the infusion cannula 1, in order to avoid the linear movement affecting the gas injection operation, the diversion capillary 62 is always between two adjacent drawing wires 51, and the water outlet of the diversion capillary 62 is set on the air vent 2. When the movable support ring 43 is pulled, the air vent 2 and the water outlet of the diversion capillary 62 are released to realize the gas injection operation.

[0060] The end of the irrigation cannula 1 is provided with a rubber plug 7. The pull wire 52 passes through the center of the rubber plug 7 and can move through the rubber plug 7. The air tube 61 passes through the rubber plug 7 and is offset from the center of the rubber plug 7.

[0061] In this embodiment, the guidewire assembly 5 first pulls the elastic bone structure 4 towards the rear end of the perfusion cannula 1, so that the elastic bone structure 4 expands outward to temporarily block the aorta with the occlusion balloon 3. The guidewire assembly 5 can simultaneously complete the temporary support work for the two occlusion balloons 3, thus achieving rapid and effective temporary blockage. Then, the gas delivery assembly 6 injects gas into the ventilation port 2, so that the occlusion balloon 3 expands as a whole to achieve stable blockage of the aorta. At this time, even if the elastic bone structure 4 is restored to its original state, the gas escape from the occlusion balloon 3 is effectively prevented.

[0062] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A perfusion-type aortic occlusion double balloon, characterized in that, include: The perfusion cannula (1) has a hollow internal structure, and two blocking balloons (3) are provided at the front end of the perfusion cannula (1). Ventilation port (2) is provided on the perfusion cannula (1) surrounded by each of the blocking balloons (3); An elastic bone structure (4) is disposed on the outside of the perfusion cannula (1) surrounded by each of the blocking balloons (3). The elastic bone structure (4) expands the blocking balloons (3) outward by deformation, and the elastic bone structure (4) can cover the airway (2) after returning to its original shape. The guidewire assembly (5) is disposed inside the irrigation cannula (1) and is used to drive the two elastic bone structures (4) to deform simultaneously. The gas delivery assembly (6) is located inside the infusion cannula (1), and the liquid outlet is located at the air inlet (2). The liquid outlet of the gas delivery assembly (6) injects liquid into the blocking balloon (3) through the air inlet (2) so that the volume of the blocking balloon (3) increases to achieve blocking. The guidewire assembly (5) moves the elastic bone structure (4) toward the rear end of the perfusion cannula (1) so that the elastic bone structure (4) expands the occlusion balloon (3) to temporarily block the aorta. The air delivery assembly (6) injects air into the occlusion balloon (3) through the air inlet (2), and after the air injection is completed, the elastic bone structure (4) is released to restore its original state and the air inlet (2) is closed so that the occlusion balloon (3) maintains the occlusion state.

2. The perfusion-type aortic occlusion double balloon according to claim 1, characterized in that, The ventilation port (2) has at least two ports, and the ventilation ports (2) are distributed in a ring on the irrigation cannula (1). When the elastic bone structure (4) returns to its original state, the end of the elastic bone structure (4) just blocks the ventilation port (2). When the elastic bone structure (4) is pulled and deformed by the guide wire assembly (5), the end of the elastic bone structure (4) moves along the side surface of the irrigation cannula (1) to release the ventilation port (2).

3. The perfusion-type aortic occlusion double balloon according to claim 2, characterized in that, The elastic bone structure (4) includes a fixed support ring (41) and a movable support ring (43) disposed on the perfusion cannula (1). The fixed support ring (41) is disposed at the rear end of the blocking balloon (3), and the movable support ring (43) is disposed at the front end of the fixed support ring (41). At least two evenly distributed elastic strips (42) are provided between the movable support ring (43) and the fixed support ring (41). A sealing ring (44) is provided on the inner wall of the movable support ring (43). The movable support ring (43) can move linearly along the side surface of the perfusion cannula (1) to drive the elastic strips (42) to deform and support the blocking balloon (3) or return to being parallel to the perfusion cannula (1).

4. The perfusion-type aortic occlusion double balloon according to claim 3, characterized in that, The guide wire assembly (5) includes a plurality of draw wires (51) disposed on each of the movable support rings (43) and a conduction hole (52) disposed on each of the infusion cannulas (1). The conduction hole (52) is located at the front end of the fixed support ring (41). The draw wire (51) passes through the conduction hole (52) into the interior of the infusion cannulas (1) and extends out through the rear end of the infusion cannulas (1).

5. The perfusion-type aortic occlusion double balloon according to claim 4, characterized in that, The infusion cannula (1) is provided with a winding rod (53) at its rear end, and the wires (51) on the two movable support rings (43) are wound or unwound along the same winding rod (53). The drawing wire (51) has thickened sections (54) on both sides of the conduction hole (52). The thickened sections (54) are used to block the conduction hole (52) so that the two ends of the perfusion cannula (1) surrounded by the blocking balloon (3) are in a closed state.

6. The perfusion-type aortic occlusion double balloon according to claim 4, characterized in that, The conduction hole (52) is an inclined perforation. The inlet end of the conduction hole (52) is located in front of the outlet end of the conduction hole (52), and the wire drawing (51) is located between two adjacent air vents (2).

7. The perfusion-type aortic occlusion double balloon according to claim 4, characterized in that: The gas delivery assembly (6) includes a gas delivery tube (61) disposed inside the infusion cannula (1) and a shunt capillary (62) disposed on the gas delivery tube (61). The distribution positions of the shunt capillary (62) correspond one-to-one with those of the air inlet (2). The liquid in the gas delivery tube (61) is transferred to the blocking balloon (3) through the shunt capillary (62).

8. The perfusion-type aortic occlusion double balloon according to claim 7, characterized in that: The diversion capillary (62) is always between two adjacent drawing wires, and the water outlet of the diversion capillary (62) is set on the air vent (2). When the movable support ring (43) is pulled, the air vent (2) and the water outlet of the diversion capillary (62) are released to realize the air injection operation.

9. The perfusion-type aortic occlusion double balloon according to claim 7, characterized in that: The infusion cannula (1) has a rubber plug (7) at its rear end. The wire (51) passes through the center of the rubber plug (7) and can move through the rubber plug (7). The air guide tube (61) passes through the rubber plug (7) and is offset from the center of the rubber plug (7).

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