A retractable occlusion balloon catheter

Abstract

The present invention relates to a retractable blocking balloon catheter, comprising an outer tube, a core tube, a balloon, a three-way handle and a white nut; the core tube is inserted into the outer tube, the rear end of the core tube is fixedly connected to the white nut, and the front end of the core tube extends out of the outer tube and is sealed and connected to the front end of the balloon; the rear end of the outer tube is connected to the three-way handle, and the front end of the core tube is sealed and connected to the rear end of the balloon; the inner wall surface of the rear end of the balloon is sealed and connected to the outer wall surface of the outer tube, and the outer wall surface of the front end of the balloon is sealed and connected to the outer wall surface of the core tube; when the white nut pulls the core tube to move backward, the core tube is suitable for receiving the front end of the balloon into the outer tube. By reversely connecting the front end of the balloon with the core tube, the balloon forms a retractable structure hidden in the outer tube, and the maximum outer diameter of the entire product is the outer tube, which is convenient for inserting the clamp channel hole of the endoscope and reducing the damage to the balloon, and also convenient for the balloon to be withdrawn after the expansion is completed, so as to reduce the damage to the endoscope and facilitate the doctor's surgical operation.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to a telescopic blocking balloon catheter. Background Art

[0002] With the development of society and the improvement of living standards, various bad living habits have led to an increasing number of respiratory diseases. Bronchoscopy diagnosis and treatment technology is currently the core technology of respiratory medicine, but there is a risk of massive bleeding during bronchoscopic biopsy. Once massive bleeding occurs, emergency rescue is required, and cases of death due to failed rescue are common. There is currently no reliable and effective prevention and treatment method for the risk of death due to massive bleeding after biopsy. The treatment of massive bleeding after biopsy is divided into drug hemostasis, local balloon occlusion hemostasis, selective pulmonary vascular embolization hemostasis, surgical lobectomy hemostasis, etc. The effect of drug hemostasis is uncertain. Selective pulmonary vascular embolization hemostasis and surgical lobectomy hemostasis are due to large trauma, high risk and high cost. They are only used for uncontrollable massive bleeding, which is prone to doctor-patient conflicts. Therefore, endoscopic control of hemostasis is the best strategy, and balloon occlusion of local bronchus for hemostasis treatment is a good choice. During bronchoscopic surgery, the balloon needs to pass through the bronchoscope's forceps hole and then reach the area that needs to be blocked. However, polyurethane balloons are currently used as bronchial blocking balloons. This material is semi-compliant and has certain limitations, such as Figure 1 Figure 2 As shown, the traditional balloon catheter consists of an outer tube 1, a core tube 2, a balloon 3, a three-way handle 4, a white nut 5, and a support wire assembly 6. The rear end of the outer tube 1 is fixedly connected to the three-way handle 4 by a gluing method, the white nut 5 is connected to the rear end of the three-way handle 4, the core tube 2 extends from the front end of the outer tube 1, the rear end of the core tube 2 is fixedly connected to the three-way handle 4 and the white nut 5 by glue 7, the inner wall surface of the rear end of the balloon 3 is sealed and fixedly connected to the outer wall surface of the outer tube 1, the inner wall surface of the front end of the balloon 3 is sealed and fixedly connected to the outer wall of the core tube 2, and the support wire assembly 6 is connected to the rear end of the white nut 5.

[0003] In the previous balloon catheter structure, the balloon could not be stretched or retracted in the longitudinal direction. The balloon could only be folded and stored in the circumferential direction. After being stored in the circumferential direction, the balloon could not fit tightly against the catheter, and the hole through the forceps was tight, which could easily scratch the endoscope and damage the balloon. In addition, the balloon could not be retracted after expansion, and the balloon and the endoscope had to be removed together. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a retractable occluding balloon catheter to solve the problem that the existing balloon cannot be tightly attached to the outer tube after being stored and can easily scratch the endoscope and damage the balloon when passing through the clamp hole.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] Provided is a retractable occluding balloon catheter, comprising

[0007] Outer tube, core tube, balloon, three-way handle and white nut;

[0008] The core tube is inserted into the outer tube, the rear end of the core tube is fixedly connected to the white nut, and the front end of the core tube extends out of the outer tube and is sealed and connected to the front end of the balloon;

[0009] The rear end of the outer tube is connected to the three-way handle, and the front end thereof is sealedly connected to the rear end of the balloon;

[0010] The inner wall surface of the rear end of the balloon is sealed and connected to the outer wall surface of the outer tube, and the outer wall surface of the front end of the balloon is sealed and connected to the outer wall surface of the core tube;

[0011] When the white nut pulls the core tube to move backward, the core tube is suitable for receiving the front end of the balloon into the outer tube;

[0012] When the white nut is connected to the three-way handle, the core tube pushes the balloon to a straight state.

[0013] Furthermore, the front end of the white nut forms an inner cone, and the rear end of the core tube is inserted into the inner cone to form a sealed and fixed connection with the inner cone.

[0014] Furthermore, glue is used to form a sealed and fixed connection between the outer wall of the core tube and the inner cone.

[0015] Furthermore, a Luer male connector is formed at the rear end of the three-way handle, a Luer female connector is arranged at the front end of the white nut, and the white nut is connected to the Luer male connector of the three-way handle via the Luer female connector.

[0016] Furthermore, it also includes

[0017] A support wire assembly, the support wire assembly comprising a support nut and a support wire;

[0018] The rear end of the white nut is provided with a Luer male connector, and the support nut is provided with a Luer female connector. The support nut is connected to the Luer male connector of the white nut via the Luer female connector.

[0019] The beneficial effects of the present invention are:

[0020] The retractable blocking balloon catheter of the present invention connects the front end of the balloon to the core tube in reverse, so that the balloon forms a retractable structure hidden inside the outer tube. The maximum outer diameter of the entire product is the outer tube, which is convenient for inserting into the clamp channel hole of the endoscope and reducing balloon damage. It is also convenient for the balloon to be withdrawn after expansion is completed, so as to reduce endoscope damage and facilitate the doctor's surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of a conventional balloon catheter;

[0023] Figure 2 This is a structural diagram of the core tube, white nut and three-way handle in a traditional balloon catheter;

[0024] Figure 3 is a schematic diagram of a support wire assembly;

[0025] Figure 4 is a schematic diagram of the balloon catheter of the present invention in a straight state;

[0026] Figure 5 It is a structural diagram of the core tube, the white nut and the three-way handle in the balloon catheter of the present invention;

[0027] Figure 6 is a schematic diagram of the balloon catheter of the present invention in a contracted state;

[0028] Among them, 1. outer tube, 2. core tube, 3. balloon, 4. three-way handle, 5. white nut, 6. support wire assembly, 61. support nut, 62. support wire, 7. glue. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 3 to 6 As shown, a retractable occluding balloon catheter comprises

[0031] Outer tube 1, core tube 2, balloon 3, three-way handle 4 and white nut 5;

[0032] The core tube 2 is inserted into the outer tube 1, the rear end of which is fixedly connected to the white nut 5, and the front end of which extends out of the outer tube 1 and is sealed and connected to the front end of the balloon 3;

[0033] The rear end of the outer tube 1 is connected to the three-way handle 4, and the front end thereof is sealedly connected to the rear end of the balloon 3;

[0034] The inner wall surface of the rear end of the balloon 3 is sealed to the outer wall surface of the outer tube 1, and the outer wall surface of the front end of the balloon 3 is sealed to the outer wall surface of the core tube 2;

[0035] When the white nut 5 pulls the core tube 2 to move backward, the core tube 2 is suitable for receiving the front end of the balloon 3 into the outer tube 1;

[0036] When the white nut 5 is connected to the three-way handle 4, the core tube 2 pushes the balloon 3 to a straight state.

[0037] Specifically, as an optional implementation in this embodiment, Figure 5 As shown, the front end of the white nut 5 forms an inner cone, and the rear end of the core tube 2 is inserted into the inner cone to form a sealed and fixed connection with the inner cone.

[0038] Specifically, as a preferred implementation of this embodiment, Figure 5 As shown, glue 7 is used to form a sealed and fixed connection between the outer wall of the core tube 2 and the inner cone.

[0039] In this embodiment, the rear end of the three-way handle 4 forms a Luer male connector, the front end of the white nut 5 is provided with a Luer female connector, and the white nut 5 is connected to the Luer male connector of the three-way handle 4 via the Luer female connector.

[0040] In this embodiment, a support wire assembly 6 is connected to the rear end of the white nut 5, and the support wire assembly 6 includes a support wire assembly 6, and the support wire assembly 6 includes a support nut 61 and a support wire 62;

[0041] The rear end of the white nut 5 is provided with a Luer male connector, and the support nut 61 is provided with a Luer female connector. The support nut 61 is connected to the Luer male connector of the white nut 5 via the Luer female connector.

[0042] In this embodiment, the three-way handle 4, white nut 5, and support nut involved are all standard parts in the industry, and the principle structure itself is existing. In this embodiment, the material used for them is PC material.

[0043] In this embodiment, the connection method between the balloon 3 and the outer tube 1 and the core tube 2 is a welding connection, which is the same as the previous connection method, except that in this embodiment, the front end of the balloon 3 is reversely installed. In the past, the inner wall surface of the front end of the balloon 3 was welded to the core tube 2, but in this embodiment, the outer wall surface of the balloon 3 is welded to the core tube 2.

[0044] In this embodiment, the rear end of the outer tube 1 and the three-way handle 4 are also fixedly connected by glue 7 .

[0045] The specific operation process of storing the retractable occluding balloon catheter of the present invention is as follows:

[0046] like Figure 6 As shown, the assembled balloon catheter is pulled through the white nut 5 to pull the core tube 2, so that the balloon 3 is slowly retracted into the outer tube 1. At this time, the balloon 3 has been retracted into the outer tube 1. At this time, the maximum outer diameter is the size of the outer tube 1. This structure is smooth when entering the endoscope, and the balloon 3 is protected by the outer tube 1, so it is not easy to damage the balloon 3.

[0047] The specific operation process of storing the retractable blocking balloon catheter of the present invention is as follows: the support wire assembly 6 in the balloon catheter is pulled out according to needs, and then the adapter guide wire is inserted, and the working channel is entered under the guidance of the adapter guide wire, and the balloon catheter is slowly delivered. When the lesion position is reached, the core tube 2 and the white nut 5 are pushed forward, and then the white nut 5 is screwed on the Luer connector at the tail end of the three-way handle 4. At this time, the balloon 3 returns to a normal straight state and is located at the blocking position. A closed cavity is formed by the cooperation of two Luers, and then the side branches of the three-way handle 4 are injected to expand the balloon 3 and block the bleeding site.

[0048] The retractable blocking balloon catheter of the present invention is reversely welded by the core tube 2 and the balloon 3 is assembled on the reverse side, so that the balloon 3 forms a retractable structure hidden inside the outer tube 1. The maximum outer diameter of the entire product is the outer tube 1, which is convenient for inserting into the clamp channel hole of the endoscope and reducing the damage of the balloon 3. At the same time, it is also convenient for the balloon 3 to be withdrawn after the expansion is completed, so as to reduce the damage of the endoscope and facilitate the doctor's surgical operation.

[0049] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0055] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A retractable occluding balloon catheter, characterized in that: include Outer tube, core tube, balloon, three-way handle and white nut; The core tube is inserted into the outer tube, the rear end of the core tube is fixedly connected to the white nut, and the front end of the core tube extends out of the outer tube and is sealed and connected to the front end of the balloon; The rear end of the outer tube is connected to the three-way handle, and the front end thereof is sealedly connected to the rear end of the balloon; The inner wall surface of the rear end of the balloon is sealed and connected to the outer wall surface of the outer tube, and the outer wall surface of the front end of the balloon is sealed and connected to the outer wall surface of the core tube; When the white nut pulls the core tube to move backward, the core tube is suitable for receiving the front end of the balloon into the outer tube; When the white nut is connected to the three-way handle, the core tube pushes the balloon to a straight state; The front end of the white nut forms an inner cone, and the rear end of the core tube is inserted into the inner cone to form a sealed and fixed connection with the inner cone; A Luer male connector is formed at the rear end of the three-way handle, a Luer female connector is arranged at the front end of the white nut, and the white nut is connected to the Luer male connector of the three-way handle via the Luer female connector.

2. The retractable occluding balloon catheter according to claim 1, characterized in that: The outer wall of the core tube and the inner cone are sealed and fixedly connected by glue.

3. The retractable occluding balloon catheter according to claim 1, characterized in that: Also includes A support wire assembly, the support wire assembly comprising a support nut and a support wire; The rear end of the white nut is provided with a Luer male connector, and the support nut is provided with a Luer female connector. The support nut is connected to the Luer male connector of the white nut via the Luer female connector.

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