Direction-adjustable dilation balloon catheter

Abstract

The utility model discloses a dilation balloon catheter capable of adjusting the direction, and belongs to the technical field of medical instruments. A dilation balloon catheter capable of adjusting the direction comprises a fixed handle, one end of the fixed handle is communicated with a sheathing canal, the sheathing canal is provided with a balloon and a discharging unit, the discharging unit is located on the inner side of the balloon, and a spring tube is installed at the end, away from the fixed handle, of the sheathing canal. A steel wire rope penetrating through the sheathing canal is installed on the inner side wall of the spring tube, an adjusting handle connected with the steel wire rope is arranged on the fixed handle, and a guide wire penetrating through the spring tube is arranged on the sheathing canal. Through the design of the steel wire rope and the bourdon tube, a doctor can adjust the direction of the balloon, so that the balloon can more flexibly reach a lesion position in a complicated vascular structure, such as a tortuous, bifurcated or seriously narrow vascular part, the flexibility greatly improves the accuracy of an operation, reduces the difficulty of the operation, and improves the working efficiency. And the durability and the safety of the catheter are improved by the protective layer on the outer side of the spring tube.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to an adjustable expansion balloon catheter. Background Art

[0002] The expansion balloon catheter, as an important medical intervention device, its background technology is mainly based on the development of vascular intervention therapy, especially its application in the field of treating vascular stenosis.

[0003] In the existing expansion balloon catheter, in complex vascular structures such as tortuous, bifurcated or severely stenosed vascular sites, its non-adjustable angle characteristic makes it difficult for the balloon expansion catheter to accurately reach the lesion location, which increases the difficulty and risk of the operation, and may also limit the success rate of the operation. Summary of the Invention

[0004] The purpose of the utility model is to provide an adjustable expansion balloon catheter aiming at the problems existing in the prior art.

[0005] To achieve the above purpose, the following technical solution is adopted in the utility model: an adjustable expansion balloon catheter, including a fixed handle, one end of the fixed handle is communicated with a sheath tube, a balloon and a discharge unit are arranged on the sheath tube, the discharge unit is located inside the balloon, a spring tube is installed at the end of the sheath tube far away from the fixed handle, a steel wire rope passing through the sheath tube is installed on the inner side wall of the spring tube, an adjustment handle connected with the steel wire rope is arranged on the fixed handle, and a guide wire passing through the spring tube is arranged on the sheath tube.

[0006] By adopting the above technical solution, through its delicate design and the coordinated work of each component, the adjustable expansion balloon catheter realizes efficient and precise medical intervention operations, providing strong support for the treatment of cardiovascular diseases.

[0007] Optionally, a rotating seat is arranged on the fixed handle, a through hole is opened on the rotating seat, and a sealing silicone part is installed inside the through hole.

[0008] By adopting the above technical solution, the arrangement of the rotating seat makes it convenient for the guide wire to penetrate and be extracted, and the sealing silicone part can seal the channel after the guide wire is extracted to avoid liquid leakage.

[0009] Optionally, an orientation adjustment channel, a conveying channel and a wire passing channel are opened on the sheath tube 2, the diameter of the sheath tube is 1.2 mm - 1.6 mm, the diameters of the orientation adjustment channel and the conveying channel are 0.2 mm - 0.5 mm, and the diameter of the wire passing channel is 0.7 mm - 0.9 mm.

[0010] By adopting the above technical solutions, the multi-channel design makes the catheter more versatile and capable of meeting different surgical requirements. At the same time, the reasonable size design ensures the unobstructed passage of the channels, improving the surgical efficiency.

[0011] Optionally, an injection tube communicating with the delivery channel is provided on the fixed handle, and a stamping tube communicating with the delivery channel is provided on the sheath.

[0012] By adopting the above technical solutions, the injection tube is used to inject contrast agent into the balloon for angiography during the operation; the stamping tube is used to apply pressure to the balloon to expand it for blood vessel dilation.

[0013] Optionally, a protective layer is provided on the outer side of the spring tube. The length of the spring tube is 25 mm - 35 mm, and the diameter of the spring tube is 1 mm - 1.4 mm.

[0014] By adopting the above technical solutions, the spring tube has a certain flexibility and can maintain the stability of its internal structure when the catheter bends. The steel wire rope installed on its inner sidewall is used to control the direction of the balloon.

[0015] Optionally, circular structures are respectively provided on the adjustment handle and the fixed handle, and a sliding groove for the adjustment handle to slide is provided on the fixed handle.

[0016] By adopting the above technical solutions, the adjustment handle is connected to the steel wire rope and is used to control the pulling or releasing of the steel wire rope, thereby adjusting the direction of the balloon. The design of the adjustment handle makes the direction adjustment operation more intuitive and convenient.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. Through the design of the steel wire rope and the spring tube, doctors can adjust the direction of the balloon, enabling it to more flexibly reach the lesion sites in complex vascular structures, such as tortuous, bifurcated, or severely stenosed blood vessel parts. This flexibility greatly improves the surgical accuracy and reduces the surgical difficulty. 2. The design of the rotating seat and through hole on the fixed handle, as well as the direction adjustment channel, delivery channel, and wire passing channel on the sheath, all make the operation of the catheter more flexible and convenient. At the same time, the protective layer on the outer side of the spring tube also improves the durability and safety of the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view structural schematic diagram of the balloon dilation catheter of the present utility model;

[0020] Figure 2 is the cross-sectional structural schematic diagram of the spring tube of the present utility model;

[0021] Figure 3Schematic diagram of the three-dimensional structure of the sheath tube of the present utility model;

[0022] Figure 4 Schematic diagram of the top view cross-sectional structure of the adjustment handle of the present utility model.

[0023] In the figure: 1. Fixed handle; 101. Injection tube; 102. Rotating seat; 103. Chute; 2. Sheath tube; 201. Steering channel; 202. Delivery channel; 203. Wire threading channel; 204. Stamping tube; 3. Balloon; 4. Discharge unit; 5. Spring tube; 501. Protective layer; 6. Steel wire rope; 7. Adjustment handle; 8. Guide wire. Specific embodiments

[0024] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the scope of protection of the present utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0026] As Figure 1 —4 shows, the specific solution of the embodiment is as follows: An adjustable expansion balloon catheter includes a fixed handle 1. The fixed handle 1 serves as the operation basis for the entire catheter system. The fixed handle 1 provides a stable holding point. Through its stable design, the stability and safety of the surgical operation are ensured, and the operation errors caused by the sliding or loosening of the fixed handle 1 are reduced. A rotating seat 102 is provided on the fixed handle 1. A through hole is provided on the rotating seat 102, and a sealing silicone member is installed inside the through hole. By rotating the rotating seat 102, its through hole can be blocked to prevent the leakage of liquid or gas after the guide wire 8 is withdrawn;

[0027] One end of the fixed handle 1 is connected to a sheath tube 2. The sheath tube 2 serves as a carrier for the balloon 3, the discharge unit 4, and the guide wire 8. The sheath tube 2 provides necessary channels and protection. The sheath tube 2 is provided with an orientation channel 201, a delivery channel 202, and a wire passage 203. The diameter of the sheath tube 2 is 1.2 mm - 1.6 mm. The diameters of the orientation channel 201 and the delivery channel 202 are 0.2 mm - 0.5 mm. The diameter of the wire passage 203 is 0.7 mm - 0.9 mm. The orientation channel 201, the delivery channel 202, and the wire passage 203 are respectively used to control the direction of the balloon 3, deliver contrast agent and stamping medium, and guide the guide wire 8. The multi-channel design makes the catheter function more comprehensive and can meet different surgical needs. At the same time, the reasonable size design ensures the unobstructedness of the channels and improves the surgical efficiency. An injection tube 101 communicating with the delivery channel 202 is provided on the fixed handle 1. The setting of the injection tube 101 can inject contrast agent into the inner side of the balloon 3 to perform angiography during the operation and clarify the lesion location. A stamping tube 204 communicating with the delivery channel 202 is provided on the sheath tube 2. The setting of the stamping tube 204 can perform stamping on the inner side of the balloon 3 to expand the balloon 3 to dilate blood vessels.

[0028] The sheath tube 2 is provided with a balloon 3 and a discharge unit 4. The balloon 3 is the main component for expanding blood vessels. It compresses plaques or stenotic parts on the blood vessel wall by expanding to restore blood vessel patency. The discharge unit 4 is located inside the balloon 3. The discharge unit 4 includes a discharge part and a developing identification ring. The discharge part can be used for electrophysiological treatment, and the developing identification ring can be used to clearly display the position of the balloon 3 under X-ray.

[0029] A spring tube 5 is installed at one end of the sheath tube 2 away from the fixed handle 1. The spring tube 5 can be welded or bonded according to the material of the sheath tube 2. The spring tube 5 has a certain flexibility and a certain resilience, and can maintain the stability of its internal structure when the catheter is bent. A protective layer 501 is provided on the outer side of the spring tube 5. The length of the spring tube 5 is 25 mm - 35 mm. The diameter of the spring tube 5 is 1 mm - 1.4 mm. A steel wire rope 6 passing through the sheath tube 2 is installed on the inner side wall of the spring tube 5. The steel wire rope 6 can be welded or bonded to the inner side wall of the spring tube 5. The combined design of the spring tube 5 and the steel wire rope 6 realizes the adjustable direction of the balloon 3, enabling doctors to easily handle complex blood vessel structures and improving the surgical success rate;

[0030] The fixed handle 1 is provided with an adjustment handle 7 connected with the steel wire 6, and the steel wire 6 is connected with the adjustment handle 7 through a limit seat. The adjustment handle 7 is used to control the pulling or releasing of the steel wire 6. The design of the adjustment handle 7 makes the direction adjustment operation more intuitive and convenient. The adjustment handle 7 is provided with a through hole for the guide wire 8 to pass through. The adjustment handle 7 and the fixed handle 1 are respectively provided with a ring structure. The fixed handle 1 is provided with a slide groove 103 for the adjustment handle 7 to slide. The sheath tube 2 is provided with a guide wire 8 passing through the spring tube 5. The guide wire 8 passes through the wire channel 203, the through hole, the through hole and the spring tube 5. The guiding effect of the guide wire 8 ensures that the catheter can smoothly reach the target position, reducing the blindness and uncertainty during the operation.

[0031] When the balloon 3 needs to be adjusted, the adjusting handle 7 drives the steel wire rope 6 to move backward away from one end of the balloon 3, and with the cooperation of the adjustment channel 201, the steel wire rope 6 pulls the spring tube 5 to bend, so that the balloon 3 can be bent during operation; when the adjusted balloon 3 needs to be reset, the adjusting handle 7 moves toward one end of the balloon 3, the steel wire rope 6 is released through the adjustment channel 201, and the spring tube 5 that loses the tension is automatically reset by elastic force.

[0032] The operation steps of the above-mentioned adjustable dilatation balloon catheter are as follows:

[0033] Inserting the sheath tube 2 together with the guide wire 8 therein into the patient's body through an appropriate surgical channel until the guide wire 8 reaches the target position;

[0034] Under the guidance of the guide wire 8, the sheath tube 2 is pushed forward until the balloon 3 is close to or located at the lesion;

[0035] According to the specific conditions of the vascular structure and the lesion site, the handle 7 is adjusted to control the pulling or release of the steel wire 6, thereby adjusting the direction of the balloon 3 so that it is accurately aligned with the lesion site;

[0036] The guide wire 8 is slowly pulled out, and the sealing silicone piece in the through hole is used to seal the through hole by rotating the rotating seat 102;

[0037] Inject contrast agent into the inner side of the balloon 3 through the injection tube 101 to perform angiography;

[0038] Observe the angiography image to identify the location of the lesion and its relationship with the surrounding blood vessels, and ensure that the balloon 3 is in the correct position;

[0039] Using the punch tube 204 to apply pressure to the inner side of the balloon 3, the balloon 3 is expanded to compress the plaque or stenosis on the blood vessel wall;

[0040] Operate through the discharging member in the discharging unit 4. After the expansion is completed, first release the pressure in the balloon 3 to make it return to its original state;

[0041] Slowly withdraw the sheath 2 while observing the patient's reaction and blood vessel condition.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable expansion balloon catheter, characterized in that, It includes a fixed handle (1), one end of the fixed handle (1) is connected to a sheath tube (2), a balloon (3) and a discharge unit (4) are provided on the sheath tube (2), the discharge unit (4) is located inside the balloon (3), a spring tube (5) is installed at one end of the sheath tube (2) away from the fixed handle (1), a wire rope (6) passing through the sheath tube (2) is installed on the inner side wall of the spring tube (5), an adjusting handle (7) connected to the wire rope (6) is provided on the fixed handle (1), and a guide wire (8) passing through the spring tube (5) is provided on the sheath tube (2).

2. The adjustable expansion balloon catheter according to claim 1, wherein: A rotating seat (102) is provided on the fixed handle (1), a through hole is formed in the rotating seat (102), and a sealing silicone member is installed inside the through hole.

3. The adjustable expansion balloon catheter according to claim 1, characterized in that: A steering channel (201), a conveying channel (202) and a wire passing channel (203) are formed in the sheath tube (2), the diameter of the sheath tube (2) is 1.2 mm - 1.6 mm, the diameters of the steering channel (201) and the conveying channel (202) are 0.2 mm - 0.5 mm, and the diameter of the wire passing channel (203) is 0.7 mm - 0.9 mm.

4. The adjustable expansion balloon catheter according to claim 3, characterized in that: An injection tube (101) communicating with the conveying channel (202) is provided on the fixed handle (1), and a stamping tube (204) communicating with the conveying channel (202) is provided on the sheath tube (2).

5. The adjustable expanding balloon catheter according to claim 1, characterized in that: A protective layer (501) is provided on the outer side of the spring tube (5), the length of the spring tube (5) is 25 mm - 35 mm, and the diameter of the spring tube (5) is 1 mm - 1.4 mm.

6. The adjustable expansion balloon catheter according to claim 1, wherein: Circular structures are respectively provided on the adjusting handle (7) and the fixed handle (1), and a sliding groove (103) for the adjusting handle (7) to slide is formed in the fixed handle (1).

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