Coronary artery angiographic catheter anti-bending device

Abstract

The utility model relates to the technical field of medical treatment, and discloses a coronary artery angiography catheter anti-bending device which comprises a hollow tube, the left side and the right side of the hollow tube are fixedly connected with a plurality of anti-bending rings, the left side and the right side in the hollow tube are fixedly connected with circular rings, the inner sides of the two circular rings are rotationally connected with conical ring plates, and the inner sides of the conical ring plates are fixedly connected with the anti-bending rings. Movable grooves are formed in the outer walls of the two conical ring plates, springs are fixedly connected to the outer walls of the rear ends of the conical ring plates, corresponding fixing rings are fixedly connected to the other ends of the multiple springs, and the outer walls of the two fixing rings are fixedly connected to the inner sides of hollow pipes. According to the utility model, when the radiography tube is inserted, the conical annular plate rotates along the circular ring and compresses the spring, the spring generates reverse elastic force to clamp the radiography tube inwards, the plurality of anti-bending rings are fixed on the left side and the right side of the hollow tube, and the plurality of anti-bending rings abut against each other when being stressed, so that the bending resistance of the hollow tube is enhanced, and the hollow tube is prevented from being excessively bent.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical technology field especially relates to coronary angiography catheter anti-bending device. BACKGROUND

[0002] Coronary angiography catheter is an important medical instrument for cardiovascular disease diagnosis and treatment, which is a long and flexible tubular structure, mainly used in coronary angiography surgery, through peripheral vascular insertion into human vascular system, gradually advancing to coronary artery opening along the vascular path, the doctor injects contrast agent into coronary artery through catheter, then uses X-ray imaging technology to clearly observe the shape, structure and blood flow of coronary artery, so as to accurately judge whether there is stenosis, obstruction or other lesions in coronary artery, which provides key basis for subsequent diagnosis and treatment plan.

[0003] Coronary angiography catheter anti-bending device is specially designed to protect coronary angiography catheter from excessive bending or twisting during use, which is used in cooperation with the catheter, installed at a specific part of the catheter or along the length direction of the catheter, the working principle is to provide additional support structure or buffer mechanism to enhance the bending resistance of the catheter, when the catheter passes through the complex vascular path, the anti-bending device can effectively disperse stress, avoid the problems of internal structure damage, lumen deformation or contrast agent delivery difficulty caused by excessive bending of the catheter.

[0004] The existing coronary angiography catheter is made of materials with high strength and toughness, and the use of special materials or composite materials with high strength and toughness will significantly increase the production cost, leading to the increase of catheter price, in the prior art, a spiral support skeleton is arranged at the key part of the catheter, the spiral structure can provide support along the axial direction of the catheter, when the catheter encounters bending force, the spiral support skeleton can maintain the shape of the catheter to avoid excessive bending, but in actual use, although the spiral support skeleton can prevent the catheter from bending, the support end will contact the catheter and cause damage when stressed. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a coronary angiography catheter anti-bending device, which aims at improving the problem that the support end of the spiral support skeleton in the prior art will contact the catheter and cause damage when stressed.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: coronary angiography catheter anti-bending device, including the hollow pipe, the left and right sides of the hollow pipe are fixedly connected with a plurality of anti-bending rings, the inside left and right sides of the hollow pipe are fixedly connected with the circular ring, the inboard of two The outer wall of two conical ring plates is provided with a movable slot, the outer wall of two conical ring plates is fixedly connected with the spring, and the other end of a plurality of springs is fixedly connected with the corresponding fixed ring. The outer wall of two fixed rings is fixedly connected with the inboard of the hollow pipe, the inboard of two conical ring plates is slidably connected with the contrast tube, and the both ends of the hollow pipe are provided with a connecting mechanism.

[0007] As a further description of the above technical scheme:

[0008] The connecting mechanism includes a connecting ring, the rear side of the connecting ring is fixedly connected to the rear end of the hollow pipe, a plurality of clamping grooves are equidistantly formed on the rear side of the connecting ring, a plurality of limiting bolts are equidistantly rotatably connected to the outer wall of the connecting ring, a plurality of buckles are equidistantly fixedly connected to the front end of the hollow pipe, and a plurality of buckles are equidistantly fixedly connected to the front end of the hollow pipe.

[0009] As a further description of the above technical scheme:

[0010] The sizes of the plurality of anti-bending rings are matched, and the anti-bending rings on the left and right sides of the hollow pipe are equidistantly arranged.

[0011] As a further description of the above technical scheme:

[0012] One end of a plurality of anti-bending rings is fixedly connected with an arc-shaped plate on the front and back sides, and a plurality of arc-shaped plates are made of box material.

[0013] As a further description of the above technical scheme:

[0014] The outer wall of a plurality of limiting bolts is slidably connected with a gasket, and one side of a plurality of gaskets is attached to the outer wall of the connecting ring.

[0015] As a further description of the above technical scheme:

[0016] The inner wall of the connecting ring is fixedly connected with a sealing gasket, and the front side of the sealing gasket is fixedly connected to the rear end of the hollow pipe.

[0017] As a further description of the above technical scheme:

[0018] A plurality of buckles are slidably connected with the inside of the corresponding clamping grooves, and the sizes of the buckles and the clamping grooves are matched.

[0019] As a further description of the above technical scheme:

[0020] One end of the plurality of limiting bolts is penetrated through the corresponding clamping groove and rotationally connected in the inside of the reserved hole, and the limiting bolt is matched with the size of the reserved hole.

[0021] The utility model has the advantages of the following:

[0022] 1. In the utility model, the radiography tube is inserted into the hollow tube and contacts the conical ring plate, and when the radiography tube is inserted, an outward thrust is generated on the conical ring plate, the conical ring plate rotates along the circular ring and compresses the spring, the spring generates a reverse elastic force to make the conical ring plate have an inward clamping force on the radiography tube, meanwhile, a plurality of anti-bending rings are fixed on the left and right sides of the hollow tube, and the plurality of anti-bending rings abut against each other when stressed, thereby enhancing the bending resistance of the hollow tube and preventing excessive bending.

[0023] 2. In the utility model, the corresponding components are butted at the front end and the connecting ring, the buckle is clamped into the clamping groove, the relative positions of the two are preliminarily fixed, then, a plurality of limiting bolts rotationally connected at equal intervals on the outer wall of the connecting ring are used, after the buckle is clamped into the clamping groove, the limiting bolts are rotated to pass through the reserved hole, the buckle is limited from being taken out of the clamping groove, and the stability and reliability of the connection are further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of the coronary angiography catheter anti-bending device is provided in the utility model;

[0025] Figure 2 A perspective view of the coronary angiography catheter anti-bending device is provided in the utility model;

[0026] Figure 3 A perspective view of the coronary angiography catheter anti-bending device is provided in the utility model;

[0027] Figure 4 A perspective view of the coronary angiography catheter anti-bending device is provided in the utility model;

[0028] Figure 5 A perspective view of the coronary angiography catheter anti-bending device is provided in the utility model.

[0029] LEGEND:

[0030] 1, hollow tube; 2, connecting mechanism; 201, connecting ring; 202, clamping groove; 203, limiting bolt; 204, buckle; 205, reserved hole; 3, anti-bending ring; 4, circular ring; 5, conical ring plate; 6, movable groove; 7, fixed ring; 8, spring; 9, radiography tube; 10, arc-shaped plate; 11, gasket; 12, sealing gasket. DETAILED DESCRIPTION

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0032] With reference to Figure 1 , Figure 2 and Figure 4 , the present application provides an embodiment: a coronary angiography catheter anti-bending device, comprising a hollow tube 1, the hollow tube 1 is used for providing support and protection for other components, and a plurality of anti-bending rings 3 are fixedly connected to the left and right sides of the hollow tube 1, the anti-bending rings 3 can enhance the anti-bending ability of the hollow tube 1, a plurality of annular rings 4 are fixedly connected to the inside left and right sides of the hollow tube 1, the annular rings 4 can serve as the support for the rotation of the conical ring plates 5, two conical ring plates 5 are rotatably connected to the inside of the two annular rings 4, the conical ring plates 5 can rotate flexibly on the annular rings 4 and interact with the angiography tubes 9, the outer walls of the two conical ring plates 5 are both provided with movable grooves 6, the movable grooves 6 can provide guidance and movement space for the rotation of the conical ring plates 5, the rear end outer walls of the conical ring plates 5 are both fixedly connected with springs 8, the springs 8 can generate elastic force to control the position of the conical ring plates 5, the other ends of the plurality of springs 8 are both fixedly connected with corresponding fixed rings 7, the fixed rings 7 are used for fixing the springs 8 and making the springs 8 stably act on the conical ring plates 5, the inner sides of the hollow tube 1 are both fixedly connected to the outer walls of the two fixed rings 7, the inside of the two conical ring plates 5 are both slidably connected with angiography tubes 9, the angiography tubes 9 are the key channels for coronary angiography, and the two ends of the hollow tube 1 are provided with connecting mechanisms 2, the connecting mechanisms 2 are used for lengthening the bending device, so that the device can adapt to more different use scenarios and requirements.

[0033] With reference to Figure 3 and Figure 5The connecting mechanism 2 comprises a connecting ring 201, which serves as a main structure for connection and provides a mounting base for other connecting components, and is fixedly connected to the rear end of the hollow pipe 1 at the rear side thereof, so that the connecting mechanism 2 is stably connected to the hollow pipe 1. A plurality of clamping grooves 202 are equidistantly arranged at the rear side of the connecting ring 201, and are used for cooperating with buckles 204 to achieve preliminary positioning and connection guiding. A plurality of limiting bolts 203 are equidistantly and rotatably connected to the outer wall of the connecting ring 201, and can be locked and unlocked in the rotating process. A plurality of buckles 204 are fixedly connected to the front end of the hollow pipe 1, and are used for clamping with the clamping grooves 202 to achieve preliminary fixing of the connection. A plurality of buckles 204 are each provided with a reserved hole 205 at one side thereof, which provides space and positioning for the rotating connection of the limiting bolt 203. The plurality of buckles 204 are respectively and slidably connected to the interiors of the corresponding clamping grooves 202, which facilitates the connection and separation operation. The buckles 204 and the clamping grooves 202 are matched in size, which can ensure the accuracy and stability of the connection. One end of each of the plurality of limiting bolts 203 penetrates through the corresponding clamping groove 202 and is rotatably connected to the interior of the reserved hole 205, so as to limit the relative displacement of the buckle 204 and the clamping groove 202. The limiting bolt 203 and the reserved hole 205 are matched in size, which ensures the smoothness and stability of the limiting bolt 203 in the rotating process, and effectively prevents the connection from loosening.

[0034] With reference to Figure 1 and Figure 5 The plurality of anti-bending rings 3 are matched in size, which ensures the consistency and uniformity of the distribution of the anti-bending rings 3 on both sides of the hollow pipe 1. The anti-bending rings 3 on the left and right sides of the hollow pipe 1 are equidistantly arranged, so that the anti-bending rings 3 can evenly enhance the bending resistance of the hollow pipe 1. One end of each of the plurality of anti-bending rings 3 is fixedly connected with an arc-shaped plate 10 at the front and rear sides thereof. The arc-shaped plate 10 can further expand the range and angle of the anti-bending protection. The plurality of arc-shaped plates 10 are made of box material, which can provide good structural strength and stability for the arc-shaped plate 10. The outer wall of each of the plurality of limiting bolts 203 is slidably connected with a gasket 11, which can reduce the wear and loosening of the limiting bolt 203 in the rotating and fixing process. One side of each of the plurality of gaskets 11 is attached to the outer wall of the connecting ring 201, which ensures the accuracy and stability of the position of the gasket 11. The inner wall of the connecting ring 201 is fixedly connected with a sealing gasket 12, which can prevent liquid or impurities from penetrating from the connecting part. The front side of the sealing gasket 12 is fixedly connected to the rear end of the hollow pipe 1, which realizes the close connection between the sealing gasket 12 and the hollow pipe 1 and the connecting ring 201, thereby effectively ensuring the sealing performance of the connecting part.

[0035] Working principle: when the coronary angiography catheter anti-bending device is used, when the angiography tube 9 is inserted into the hollow tube 1, the angiography tube 9 is in contact with the inner side of the two conical ring plates 5, due to the insertion of the angiography tube 9, an outward pushing force is generated on the conical ring plate 5, the conical ring plate 5 rotates along the corresponding circular ring 4 through the movable groove 6 formed in the outer wall of the conical ring plate 5, and the compression spring 8 is compressed, one end of the spring 8 is fixed to the outer wall at the rear end of the conical ring plate 5, and the other end is fixed to the fixed ring 7, and the fixed ring 7 is fixed to the inner side of the hollow tube 1, in this process, the spring 8 generates a reverse elastic force, which acts on the conical ring plate 5, so that the conical ring plate 5 generates an inward clamping force on the angiography tube 9, and a plurality of anti-bending rings 3 are fixed on the left and right sides of the hollow tube 1, which can externally enhance the anti-bending ability of the hollow tube 1, and prevent the hollow tube 1 from being excessively bent when subjected to external force;

[0036] And when other components or devices need to be connected, the front end of the corresponding component is docked with the connecting ring 201, the buckle 204 is clamped into the clamping groove 202, thereby preliminarily fixing the relative position of the two, and the plurality of limit bolts 203 equally spaced and rotatably connected to the outer wall of the connecting ring 201 further lock, after the buckle 204 is clamped into the clamping groove 202, the limit bolt 203 is rotated to pass through the reserved hole 205, so that the buckle 204 is prevented from being pulled out of the clamping groove 202, thereby enhancing the stability and reliability of the connection.

[0037] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A coronary angiography catheter anti-bending device, comprising a hollow tube (1), characterized in that: Multiple anti-bending rings (3) are fixedly connected to the left and right sides of the hollow tube (1). Circular rings (4) are fixedly connected to the left and right sides of the interior of the hollow tube (1). Conical ring plates (5) are rotatably connected to the inner sides of the two circular rings (4). Movable grooves (6) are opened on the outer walls of the two conical ring plates (5). Springs (8) are fixedly connected to the outer walls of the rear ends of the conical ring plates (5). Corresponding fixed rings (7) are fixedly connected to the other ends of the multiple springs (8). The inner sides of the hollow tube (1) are fixedly connected to the outer walls of the two fixed rings (7). Contrast tubes (9) are slidably connected to the inner sides of the two conical ring plates (5). Connecting mechanisms (2) are provided at both ends of the hollow tube (1). The connecting mechanisms (2) are used to extend the bending device.

2. The anti-bending device for coronary angiography catheters according to claim 1, characterized in that: The connecting mechanism (2) includes a connecting ring (201), the rear side of which is fixedly connected to the rear end of the hollow tube (1). Multiple slots (202) are equidistantly provided on the rear side of the connecting ring (201). Multiple limiting bolts (203) are equidistantly rotatably connected to the outer wall of the connecting ring (201). Multiple buckles (204) are equidistantly fixedly connected to the front end of the hollow tube (1). A reserved hole (205) is provided on one side of each of the multiple buckles (204).

3. The anti-bending device for coronary angiography catheters according to claim 1, characterized in that: The sizes of the multiple anti-bending rings (3) are matched, and the anti-bending rings (3) on the left and right sides of the hollow tube (1) are arranged at equal intervals.

4. The anti-bending device for coronary angiography catheters according to claim 1, characterized in that: Each of the multiple anti-bending rings (3) has an arc plate (10) fixedly connected to one end of the front and rear sides, and the multiple arc plates (10) are all made of box material.

5. The anti-bending device for coronary angiography catheters according to claim 2, characterized in that: Each of the multiple limiting bolts (203) has a slidably connected washer (11) on its outer wall, and one side of each of the multiple washer (11) is in contact with the outer wall of the connecting ring (201).

6. The anti-bending device for coronary angiography catheters according to claim 2, characterized in that: A sealing gasket (12) is fixedly connected to the inner wall of the connecting ring (201), and the front side of the sealing gasket (12) is fixedly connected to the rear end of the hollow tube (1).

7. The anti-bending device for coronary angiography catheters according to claim 2, characterized in that: The multiple buckles (204) are slidably connected to the interior of the corresponding slots (202), and the buckles (204) and slots (202) are matched in size.

8. The anti-bending device for coronary angiography catheters according to claim 2, characterized in that: One end of each of the plurality of limiting bolts (203) passes through the corresponding slot (202) and is rotatably connected inside the reserved hole (205), wherein the size of the limiting bolt (203) matches that of the reserved hole (205).

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