Bending-adjustable guide catheter

Abstract

The utility model discloses a bending-adjustable guiding catheter which comprises a grip mechanism, an outer catheter body is installed at the top of the grip mechanism, an inner catheter body is fixed in the outer catheter body, one end of the inner catheter body penetrates through the side face of the outer catheter body, a cavity is formed between the outer catheter body and the inner catheter body, and the outer catheter body and the inner catheter body are arranged in the cavity. The inner pipe body is fixedly sleeved with a steel wire mesh sleeve and an annular sleeve, a sliding sleeve is arranged between the steel wire mesh sleeve and the inner wall of the outer pipe body, and a pull rope is slidably connected into the sliding sleeve in a penetrating mode. Compared with the prior art, by arranging the grip mechanism, the pull ropes at the two ends are wound and unwound through the motor and the winding roller in the grip mechanism, the bending of the device can be adjusted according to needs, in the device, the steel wire mesh provides supporting force for the main body part sleeve of the device, and the whole device keeps proper supporting performance; the annular sleeve is arranged on the head of the device, necessary bending curvature is provided while supporting force is provided, and the device is simple in structure and quite convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of guiding catheters, in particular to an adjustable-bending guiding catheter. Background Art

[0002] A guiding catheter is a medical device used to assist other instruments to reach a specific part, mainly made of flexible plastic or metal. It can be inserted into the patient's body through a surgical incision or hole to guide other treatment instruments to the part that needs treatment.

[0003] The existing Chinese patent "an adjustable-bending microcatheter" with the publication number CN219501786U proposes to use the gears in the gear wire winding box to pull the wire, and then realize the bending operation of the catheter. However, in the actual use process, a soft head is required to complete the catheter bending. But since the head needs to enter the body for movement, it requires a certain hardness. The existing guiding catheters cannot balance the softness and hardness of the catheter head according to needs, and there are certain deficiencies in use. Therefore, we propose an adjustable-bending guiding catheter. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and propose an adjustable-bending guiding catheter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An adjustable-bending guiding catheter includes a grip mechanism. The top of the grip mechanism is provided with an outer tube body. An inner tube body is fixed inside the outer tube body. One end of the inner tube body penetrates through the side surface of the outer tube body. A cavity is formed between the outer tube body and the inner tube body. A wire mesh sleeve and an annular sleeve are fixedly sleeved on the inner tube body. A sliding sleeve is arranged between the wire mesh sleeve and the inner wall of the outer tube body. A pull rope is slidably connected through the inside of the sliding sleeve. One end of the pull rope is provided with a steel ball, and the steel ball is fixed on the side surface of the annular sleeve. The pull rope is inserted into the grip mechanism.

[0007] Preferably, hydrophilic coatings are provided on the outer wall of the outer tube body and the inner wall of the inner tube body. The inner tube body is used to guide the surgical guide wire.

[0008] Preferably, the grip mechanism includes a mounting plate. A grip body is fixed on the side surface of the mounting plate. Motors are installed at both ends of the side surface of the grip body. The output shaft of the motor is inserted into the grip body and is provided with a winding roller. An anti-slip pad is fixedly sleeved on the grip body.

[0009] Preferably, the outer tube body is fixed on the side surface of the mounting plate. The pull rope penetrates through the mounting plate and the side surface of the grip body and is slidably connected therewith.

[0010] Preferably, the drawstring is connected to the winding roller, and the drawstring is wound on the winding roller.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By providing a grip mechanism, the present utility model uses the motor and the winding roller in the grip mechanism to wind and unwind the drawstrings at both ends, enabling the device to be bent as needed. In the device, the wire mesh sleeve provides support for the main body part of the device, keeping the overall device properly supported. The annular sleeve is located at the head of the device, providing the necessary bending curvature while providing support. The device has a simple structure and is very convenient to use. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an adjustable bending guiding catheter proposed by the present utility model;

[0014] Figure 2 is Figure 1 an installation schematic diagram of the inner tube body and the outer tube body;

[0015] Figure 3 is Figure 1 a cross-sectional view of the grip mechanism in the middle.

[0016] In the figure: 1 grip mechanism, 11 mounting plate, 12 grip body, 13 anti-slip pad, 14 motor, 15 winding roller, 2 outer tube body, 3 inner tube body, 4 sliding sleeve, 5 wire mesh sleeve, 6 annular sleeve, 7 steel ball, 8 drawstring, 9 filling layer. Specific Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of 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.

[0018] Refer to Figures 1-3, An adjustable bending guiding catheter, comprising a grip mechanism 1. At the top of the grip mechanism 1, an outer tube body 2 is installed. Inside the outer tube body 2, an inner tube body 3 is fixed. One end of the inner tube body 3 penetrates through the side surface of the outer tube body 2, and a cavity is formed between the outer tube body 2 and the inner tube body 3. A wire mesh sleeve 5 and an annular sleeve 6 are fixedly sleeved on the inner tube body 3. A sliding sleeve 4 is arranged between the wire mesh sleeve 5 and the inner wall of the outer tube body 2. A pull rope 8 is slidably connected through the inside of the sliding sleeve 4. One end of the pull rope 8 is installed with a steel ball 7, and the steel ball 7 is fixed on the side surface of the annular sleeve 6. The pull rope 8 is inserted into the inside of the grip mechanism 1. Hydrophilic coatings are provided on the outer wall of the outer tube body 2 and the inner wall of the inner tube body 3. The inner tube body 3 is used to guide the guide wire for surgery. The grip mechanism 1 includes a mounting plate 11. On the side surface of the mounting plate 11, a grip body 12 is fixed. At both ends of the side surface of the grip body 12, motors 14 are installed. The output shafts of the motors 14 are inserted into the inside of the grip body 12 and are provided with winding rollers 15. An anti-slip pad 13 is fixedly sleeved on the grip body 12. The outer tube body 2 is fixed on the side surface of the mounting plate 11. The pull rope 8 penetrates through the side surfaces of the mounting plate 11 and the grip body 12 and is slidably connected thereto. The pull rope 8 is linked to the winding roller 15, and the pull rope 8 is wound on the winding roller 15. By setting the grip mechanism, the motors and winding rollers in the grip mechanism are used to wind and unwind the pull ropes at both ends, so that the device can be bent according to needs. In the device, the wire mesh provides support for the main body part of the device, so that the whole device maintains appropriate support. The annular sleeve is at the head of the device, providing necessary bending curvature while providing support. The device has a simple structure and is very convenient to use.

[0019] During use, the device is connected to a power supply. The hydrophilic coating on the outer tube body 2 provides the device with passability in the patient's body. The hydrophilic coating inside the inner tube body 3 provides stable passability for the surgical equipment. During use, the device is connected to a power supply, and two motors 14 are started in opposite directions. The output shafts of the motors 14 drive the winding rollers 15 to rotate. One winding roller 15 winds the pull rope 8, and the other winding roller 15 unwinds the pull rope 8. The pull rope 8 drives the steel ball 7 to move, so that the head of the device deflects in the required direction. Inside the device, the wire mesh sleeve 5 is located in the main body part of the device, improving the support of the device and making the whole device maintain appropriate support. The annular sleeve 6 is at the head of the device, providing necessary bending curvature while providing support. The device has a simple structure and is very convenient to use.

[0020] In summary, compared with the prior art, the present utility model sets the grip mechanism, and the motors and winding rollers in the grip mechanism are used to wind and unwind the pull ropes at both ends, so that the device can be bent according to needs. In the device, the wire mesh provides support for the main body part of the device, so that the whole device maintains appropriate support. The annular sleeve is at the head of the device, providing necessary bending curvature while providing support. The device has a simple structure and is very convenient to use.

[0021] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A guide catheter with adjustable bend, comprising a handle mechanism (1), characterized in that: An outer tube body (2) is installed on the top of the handle mechanism (1), an inner tube body (3) is fixed inside the outer tube body (2), one end of the inner tube body (3) passes through the side of the outer tube body (2), a cavity is formed between the outer tube body (2) and the inner tube body (3), a wire mesh sleeve (5) and an annular sleeve (6) are fixedly sleeved on the inner tube body (3), a sliding sleeve (4) is arranged between the wire mesh sleeve (5) and the inner wall of the outer tube body (2), a pull rope (8) is slidably connected to the inside of the sliding sleeve (4), a steel ball (7) is installed at one end of the pull rope (8), the steel ball (7) is fixed on the side of the annular sleeve (6), and the pull rope (8) is inserted into the inside of the handle mechanism (1).

2. The guide catheter with adjustable bend according to claim 1, characterized in that: The outer wall of the outer tube body (2) and the inner wall of the inner tube body (3) are both provided with a hydrophilic coating, and the inner tube body (3) is used for guiding a guide wire for surgery.

3. The guide catheter with adjustable bend according to claim 1, characterized in that: The handle mechanism (1) comprises a mounting plate (11), a handle body (12) is fixed to the side of the mounting plate (11), motors (14) are installed at both ends of the side of the handle body (12), an output shaft of the motor (14) is inserted into the handle body (12) and a winding roller (15) is provided inside, and an anti-slip pad (13) is fixedly sleeved on the handle body (12).

4. The guide catheter with adjustable bend according to claim 3, characterized in that: The outer tube body (2) is fixed on the side of the mounting plate (11), and the pull rope (8) passes through the mounting plate (11) and the side of the handle body (12) and is slidably connected thereto.

5. The guide catheter with adjustable bend according to claim 4, characterized in that: The pull rope (8) is connected to a winding roller (15), and the pull rope (8) is wound on the winding roller (15).

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