CN219814218U

CN219814218U - Saccule type aortic blood blocking device

Info

Publication number: CN219814218U
Application number: CN202320951127.6U
Authority: CN
Inventors: 孙智慧; 梅奇峰; 龙顺江; 范杰
Original assignee: Shanghai Xinrui Medical Technology Co ltd
Current assignee: Shanghai Xinrui Medical Technology Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-10-13
Anticipated expiration: 2033-04-24

Abstract

The utility model discloses a balloon type aortic blood blocking device. The balloon-type aortic blood-blocking device comprises a balloon, wherein the balloon has a deployment state, and in the deployment state, the balloon is configured to block a blood vessel of a target area; the balloon comprises a first body part and a second body part, and in the unfolded state, the outer side wall of the balloon is abutted against the inner wall of the blood vessel at the juncture of the first body part and the second body part; wherein, the first body part is conical. The balloon of the balloon-type aortic blood restriction device has a smaller volume at least at the first body portion; therefore, the filling speed of the saccule is higher, the filling time is shortened, the shock risk caused by bleeding is reduced, and the safety of plugging operation is improved.

Description

Saccule type aortic blood blocking device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a balloon type aortic blood blocking device.

Background

Clinically, patients with traumatic shock often have rapid blood pressure drop in early stages; if bleeding cannot be controlled in time, fluid is replenished and blood pressure is maintained, the effective circulating blood volume of a patient is further reduced, and a high death rate is caused.

An effective method for patients with such severe shock is currently resuscitation aortic balloon occlusion (REBOA). REBOA can block the aorta at the proximal end of the blood loss part, thereby not only effectively controlling blood loss, but also maintaining the proximal blood pressure, so that the limited circulating blood volume is redistributed, and the important organ blood supply of heart, brain and the like is ensured, thus being an important technology for early antishock treatment. REBOA is often used for emergency treatment of traumatic shock patients, can effectively control blood loss, maintain blood pressure and improve treatment rate, and is an important technology for antishock treatment.

However, the balloons used for vascular occlusion in the prior art have disadvantages; for example, the balloon has a large volume, is laborious to deliver, and requires a long time to fill the balloon, thereby adversely increasing the safety of the occlusion operation.

In view of the foregoing, a new solution is needed to solve the above-mentioned problems.

Disclosure of Invention

An object of the present utility model is to provide a new technical solution of a balloon aortic blood blocking device.

According to a first aspect of the present utility model there is provided a balloon aortic blood resistance apparatus comprising a balloon having a deployed state, and in the deployed state the balloon is configured to occlude a vessel of a target area;

the balloon comprises a first body part and a second body part, and in the unfolded state, the outer side wall of the balloon is abutted against the inner wall of the blood vessel at the juncture of the first body part and the second body part;

wherein the first body part is conical.

Optionally, the side wall of the second body part is an arc surface.

Optionally, the length of the first body portion in the axial direction is greater than the length of the second body portion in the axial direction.

Optionally, the first body portion increases in size in a radial direction along a direction toward the second body portion; the second body portion gradually increases in size in a radial direction in a direction toward the first body portion.

Optionally, the material of the balloon is a compliant material.

Optionally, the balloon type aortic blood blocking device further comprises a conveying pipe and a receiving pipe, and the balloon is arranged on the conveying pipe; the conveying pipe is at least partially sleeved in the accommodating pipe; the accommodating tube can move relative to the balloon and the conveying tube along the axial direction of the accommodating tube;

the balloon has a contracted state in which the balloon is contained within the receiving tube, and the balloon follows the delivery tube and the receiving tube to a target area.

Optionally, the conveying pipe comprises a guide pipe and a guide wire, and the guide wire is at least partially sleeved in the guide pipe; the balloon is connected with the side wall of the catheter and is communicated with the catheter, and a part of the guide wire penetrates through the balloon.

Optionally, the distal end of the catheter is fixedly connected to the distal end of the guidewire.

Optionally, the distal end of the delivery tube is curved.

Optionally, the aortic blood-blocking device further comprises a straightener, at least part of which is tubular in structure and has an accommodating space; when the conveying pipe enters a human body, the conveying pipe comprises a part of the structure of the far end of the conveying pipe, which is contained in the containing space of the straightener.

According to one embodiment of the present utility model, there is provided a balloon aortic blood restriction device, wherein the balloon has a smaller volume at least at the first body portion; therefore, the filling speed of the saccule is higher, the filling time is shortened, the shock risk caused by bleeding is reduced, and the safety of plugging operation is improved.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic view of a release area of a balloon aortic blood restriction device according to one embodiment of the utility model;

FIG. 2 is a schematic illustration of a balloon aortic blood restriction device according to one embodiment of the utility model;

FIG. 3 is a schematic diagram of a balloon aortic blood restriction device according to one embodiment of the utility model;

FIG. 4 is a schematic illustration of the cooperation of a straightener with a guidewire in a balloon aortic blood resistor according to one embodiment of the utility model;

fig. 5 is a schematic diagram of a balloon aortic blood restriction device in comparison to a balloon of the prior art according to one embodiment of the utility model.

Reference numerals illustrate:

1. a balloon type aortic blood blocking device; 11. a balloon; 111. a first body portion; 112. a second body portion; 12. a delivery tube; 121. a conduit; 122. a guide wire; 13. a storage tube; 14. a straightener; 141. a first opening; 142. and a second opening.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 2-4, a balloon aortic blood resistance device 1 is provided according to one embodiment of the present utility model. The balloon-type aortic blood-blocking device 1 comprises a balloon 11, wherein the balloon 11 has a deployment state, and in the deployment state, the balloon 11 is configured to block a blood vessel of a target area;

the balloon 11 includes a first body portion 111 and a second body portion 112, and in the deployed state, an outer side wall of the balloon 11 abuts against an inner wall of a blood vessel at a boundary position between the first body portion 111 and the second body portion 112; wherein the first body 111 has a conical shape.

Referring to fig. 1, for the balloon aortic blood-blocking device 1 provided in the embodiment of the utility model, the balloon aortic blood-blocking device 1 is generally released in a body in a region a or a region B shown in fig. 1, so as to perform the functions of rapidly blocking blood vessels, maintaining blood pressure, guaranteeing blood supply of vital organs such as heart, brain and the like, and avoiding shock. Wherein, the area A is the thoracic aortic area, and the area B is the abdominal aortic area. C in fig. 1 indicates the entrance of the balloon aortic blood restriction device 1, which is typically accessed via the femoral artery shown in C in fig. 1, but also via the carotid artery.

With the balloon type aortic blood blocking device 1 provided by the embodiment of the utility model, when a vessel blocking operation is performed, the balloon 11 is made to reach a target area, and the balloon 11 is made to enter a deployed state, so that the balloon 11 in the deployed state blocks the vessel in the target area. Specifically, at the boundary position between the first body portion 111 and the second body portion 112, the outer side wall of the balloon 11 abuts against the inner wall of the blood vessel, thereby sealing the blood vessel.

In the balloon aortic blood resistance device 1 provided in the embodiment of the utility model, it includes a conical first body part 111; referring to fig. 5, for the conventional balloon, the outer profile of the cross section thereof in the axial direction generally exhibits an arc shape protruding outward as shown by a dotted line, so that the space occupied by the balloon is large. In the balloon-type aortic blood resistor 1, the outer contour of the balloon 11 at the first body portion 111 in the cross section in the axial direction is linear, so that the balloon 11 has a smaller volume at least at the first body portion 111; this allows the balloon 11 to fill faster, thereby reducing the filling time, reducing the risk of shock due to bleeding, and improving the safety of the occlusion procedure.

Referring to fig. 2, in one embodiment, the sidewall of the second body 112 is curved.

In this particular example, the side wall of the second body portion 112 is curved, and thus, the second body portion 112 engages with the first body portion 111 in an outwardly convex curved surface; the position of the outer side wall of the balloon 11 abutting against the inner wall of the blood vessel is an arc-shaped surface of the second body 112, so that the balloon 11 and the inner wall of the blood vessel can be tightly attached without damaging the inner wall of the blood vessel.

Wherein, the first body portion 111 and the second body portion 112 are integrally connected.

Referring to fig. 2, in one embodiment, the length of the first body portion 111 in the axial direction is greater than the length of the second body portion 112 in the axial direction.

In this specific example, the length of the first body portion 111 in the axial direction is set longer, and the length of the second body portion 112 in the axial direction is set shorter, so that it is possible to further ensure that the balloon 11 has a smaller volume.

Referring to fig. 2, in one embodiment, the first body portion 111 gradually increases in size in a radial direction in a direction toward the second body portion 112; the second body portion 112 gradually increases in size in the radial direction in a direction toward the first body portion 111.

In this particular example, the first body portion 111 and the second body portion 112 gradually increase in radial dimension toward each other and are connected to each other; the radial dimension here refers to the radius or diameter dimension of the circle at the cross-section.

In one embodiment, the material of the balloon 11 is a compliant material.

In this particular example, the balloon 11 is made of a compliant material that is relatively soft; the optional compliant material is a polymer material such as polyurethane, silica gel, etc.

Referring to fig. 3, in one embodiment, the balloon aortic blood blocking device further comprises a delivery tube 12 and a receiving tube 13, wherein the balloon 11 is disposed on the delivery tube 12; the conveying pipe 12 is at least partially sleeved in the accommodating pipe 13; the receiving tube 13 is movable relative to the balloon 11 and the delivery tube 12 in the axial direction of the receiving tube 13;

the balloon 11 has a contracted state in which the balloon 11 is accommodated in the accommodating tube 13, and the balloon 11 follows the delivery tube 12 and the accommodating tube 13 to a target area.

In this specific example, the balloon 11 is initially accommodated in the accommodating tube 13, and the balloon 11 is in a contracted state by the restraining action of the accommodating tube 13. When the vascular occlusion operation is performed, the balloon 11 is made to follow the conveying pipe 12 and the receiving pipe 13 to reach a target area in a patient body, which is required to be subjected to vascular occlusion, and then the receiving pipe 13 is made to move towards the proximal end, so that the balloon 11 is separated from the receiving pipe 13 and is exposed outside the receiving pipe 13; after the balloon 11 is released from the restraining action of the storage tube 13, the balloon 11 is inflated, for example, with a liquid to switch the balloon 11 from the contracted state to the expanded state.

Wherein, the far end refers to the end of the balloon type aortic blood blocking device 1 which is far away from an operator when entering a human body, and the near end refers to the end of the balloon type aortic blood blocking device 1 which is near to the operator when entering the human body.

With the balloon-type aortic blood-blocking device 1 provided by the embodiment of the utility model, since the balloon 11 has a smaller volume, the volume of the balloon 11 in the contracted state is smaller, so that when the balloon 11 is accommodated in the accommodating tube 13 for conveying in the contracted state, the pushing force during conveying can be reduced; and for the balloon 11 with smaller volume, correspondingly, the accommodating tube with smaller diameter size can be matched, thereby reducing the wound caused by operation and reducing the risk of vasospasm possibly caused by the overlarge accommodating tube.

Referring to fig. 3, in one embodiment, the delivery tube 12 includes a catheter 121 and a guide wire 122, and the guide wire 122 is at least partially sleeved in the catheter 121; the balloon 11 is connected with the side wall of the catheter 121, the balloon 11 is communicated with the catheter 121, and a part of the guide wire 122 is penetrated in the balloon 11.

In this particular example, a relatively hard wire 122 guides a relatively soft catheter 121 from an inlet C shown in FIG. 1 into the body, and a balloon 11 attached to the catheter 121 then follows the catheter 121 into the body, with the balloon 11 in a contracted state received in the receiving tube 13. When reaching the region a or the region B shown in fig. 1, the receiving tube 13 is retracted in the proximal direction, and the balloon 11 is inflated after the balloon 11 is detached from the receiving tube 13, and the balloon 11 is switched from the contracted state to the expanded state to occlude the blood vessel.

Optionally, marker points may be provided on the catheter 121 to direct the release of the balloon aortic blood restriction device 1 in either region a or region B shown in fig. 1.

In one embodiment, the sidewall of the catheter 121 is provided with a filling hole at a position corresponding to the balloon 11, and in the case where the balloon 11 follows the delivery tube 12 and the receiving tube 13 to the target area, liquid enters the catheter 121 through the opening at the proximal end of the catheter 121 and enters the balloon 11 through the filling hole to fill the balloon 11.

In this specific example, when the balloon 11 is inflated, liquid is injected from the opening at the proximal end of the catheter 121, and when the liquid flows to a position on the catheter 121 corresponding to the balloon 11, the liquid flows out from the injection hole and into the balloon 11 to inflate the balloon 11. Alternatively, the liquid may be, for example, physiological saline.

Alternatively, the balloon 11 and catheter 121 may be integrally connected; the connection may also be formed by bonding, heat sealing, laser welding, or the like.

In one embodiment, the distal end of the catheter 121 is fixedly coupled to the distal end of the guidewire 122.

In this particular example, the catheter 121 and the guidewire 122 may be attached distally by adhesive, heat sealing, laser welding, or the like, with both the catheter 121 and the guidewire 122 being advanced into the body during use without additional guidewire intervention.

Referring to fig. 2, in one embodiment, the distal end of the delivery tube 12 is curved.

In this particular example, the distal end of the delivery tube 12 is provided in a curved shape; that is, the distal end of the catheter 121 and the distal end of the guidewire 122 are both curved, so that damage to the vessel wall can be avoided.

Referring to fig. 4, in one embodiment, the aortic blood resistance apparatus further comprises a straightener 14, at least part of the straightener 14 has a tubular shape and has a receiving space; when the delivery tube 12 enters the human body, a part of the structure of the delivery tube 12 including the distal end thereof is received in the receiving space of the straightener 14.

In this specific example, the delivery tube 12 is first received in the straightener 14 upon entry into the human body so that the curved front section of the delivery tube 12 enters; the straightener 14 is provided with a first opening 141 and a second opening 142, and after the delivery tube 12 has been introduced into the body, the straightener 14 is retracted proximally through the first opening 141 and the second opening 142.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A balloon aortic blood resistance apparatus characterized by comprising a balloon (11), the balloon (11) having a deployed state, and in the deployed state, the balloon (11) being configured to occlude a vessel of a target area;

the balloon (11) comprises a first body part (111) and a second body part (112), and in the unfolded state, the outer side wall of the balloon (11) is abutted against the inner wall of a blood vessel at the junction position of the first body part (111) and the second body part (112);

wherein the first body part (111) is conical.

2. The balloon aortic blood resistance device according to claim 1, wherein a sidewall of the second body portion (112) is an arcuate surface.

3. The balloon aortic blood resistance device according to claim 1, wherein the length of the first body portion (111) in the axial direction is greater than the length of the second body portion (112) in the axial direction.

4. A balloon aortic blood resistance device according to any of claims 1-3, wherein the first body portion (111) increases in size in a radial direction in a direction towards the second body portion (112); the second body portion (112) gradually increases in size in a radial direction along a direction toward the first body portion (111).

5. A balloon aortic blood resistance device according to any one of claims 1-3, wherein the balloon (11) is of a compliant material.

6. The balloon aortic blood resistance device according to claim 1, further comprising a delivery tube (12) and a receiving tube (13), the balloon (11) being disposed on the delivery tube (12); the conveying pipe (12) is at least partially sleeved in the accommodating pipe (13); the accommodating tube (13) can move along the axial direction of the accommodating tube (13) relative to the balloon (11) and the conveying tube (12);

the balloon (11) has a contracted state in which the balloon (11) is accommodated in the accommodating tube (13), and the balloon (11) follows the conveying tube (12) and the accommodating tube (13) to a target region.

7. The balloon aortic blood resistance device according to claim 6, wherein the delivery tube (12) comprises a catheter (121) and a guide wire (122), and the guide wire (122) is at least partially sleeved in the catheter (121); the balloon (11) is connected with the side wall of the catheter (121) and the balloon (11) is communicated with the catheter (121), and a part of the guide wire (122) is penetrated in the balloon (11).

8. The balloon aortic blood resistance device according to claim 7, wherein a distal end of the catheter (121) is fixedly connected to a distal end of the guidewire (122).

9. The balloon aortic blood restriction device according to claim 6, wherein the distal end of the delivery tube (12) is curved.

10. Aortic blood resistance apparatus according to claim 9, characterized in that the aortic blood resistance apparatus further comprises a straightener (14), at least part of the straightener (14) having a tubular structure and having a receiving space; when the conveying pipe (12) enters a human body, the conveying pipe (12) comprises a part of the structure of the distal end of the conveying pipe, which is contained in the containing space of the straightener (14).