Intravascular support catheter with rotary cutting tip

Abstract

The utility model relates to the technical field of medical catheters, in particular to an intravascular supporting catheter with a rotary-cut tip, which comprises a catheter body, a catheter end is integrally formed at the top end of the catheter body, a catheter head is integrally formed at the bottom end of the catheter body, and the middles of two ends of the catheter head are communicated with catheter joints. And edge grooves are inwards formed in the two sides of the catheter head correspondingly, tool bits are movably installed in the two edge grooves correspondingly, and folding mechanisms are arranged between the tool bits and the catheter body. The sliding block, the connecting rod, the elastic pieces and the tool bit are used in cooperation, in daily use, the tool bit is contained in the edge groove, the elastic pieces arranged on the two sides of the top end of the tool bit can pull the tool bit, the tool bit is locked into the edge groove, and meanwhile the middle of the top end of the tool bit drives the connecting rod to penetrate through the sliding block to move to the outer side of the bottom end of the balloon. In this way, when the scalpel head is taken and guided in, the scalpel head cannot injure medical workers and patients, and therefore the safety in the using process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical catheters, in particular to an intravascular support catheter with a rotary cutting tip. Background Art

[0002] Medical catheters are flexible tubular devices used to guide and deliver drugs, liquids or gases, as well as to perform diagnostic or therapeutic operations. They are widely used in the medical field for various medical procedures. Medical catheters are usually made of flexible biocompatible materials such as polyurethane, silicone or polyethylene, which can guide the catheter in the body without causing allergic or rejection reactions.

[0003] The existing intravascular support catheter with a rotary cutting tip on the market cannot have the blade retracted into the tube head before use. At the same time, the blade is extended when cutting is required, so that the blade is always exposed to the outside, which poses a risk of scratching patients or medical staff. For this reason, we propose an intravascular support catheter with a rotary cutting tip. Utility Model Content

[0004] The utility model aims to provide an intravascular support catheter with a rotary cutting tip to solve the problems raised in the above background technology.

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

[0006] An intravascular support catheter with a rotary cutting tip, comprising

[0007] A catheter body, wherein a tube end is integrally formed at the top end of the catheter body, a tube head is integrally formed at the bottom end of the catheter body, and both ends of the tube head are connected to a tube joint in the middle;

[0008] Side grooves are provided inwardly on both sides of the tube head, and cutter heads are movably installed inside the two side grooves. A folding mechanism is provided between the cutter head and the catheter body, and the folding mechanism includes a slider, a connecting rod and an elastic member.

[0009] Preferably, a main pipe is movably mounted on the top of the catheter body, a thread groove is arranged on the outside of the main pipe, the thread groove is threadedly connected to the catheter body, and both sides of the top of the catheter body are connected to the outside with branch pipes;

[0010] Preferably, a guide groove is provided on the inner wall of the catheter body near the top of the side groove, and a guide block is fixedly connected to the top of the cutter head near the guide groove, and the guide block is slidably connected to the guide groove;

[0011] Preferably, a slider is arranged just above the top of the cutter head near the catheter body, the middle part of the slider is movably connected to the connecting rod, the bottom end of the connecting rod is fixedly connected to the cutter head, both sides of the top of the cutter head are fixedly connected to elastic members, and the top of the elastic member is fixedly connected to the slider;

[0012] Preferably, the middle parts of the two elastic members are both "S" shaped;

[0013] Preferably, a bracket is provided at the top of the catheter body near the slider, a balloon is provided at the bottom end of the bracket, and the top end of the balloon is connected to the pipe joint through the trachea.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This intravascular support catheter with a rotary cutting tip is used in conjunction with a slider, a connecting rod, an elastic member and a blade head. During daily use, the blade head is received in the side groove, and the elastic members arranged on both sides of the top of the blade head will pull the blade head so that the blade head is locked into the side groove. At the same time, the middle part of the top of the blade head drives the connecting rod to pass through the slider and move to the outside of the bottom end of the balloon. In this way, the blade head will not cause damage to medical staff and patients when being taken out and introduced, thereby improving safety during use.

[0016] 2. This intravascular support catheter with a rotary cutting tip is used in conjunction with a stent, a balloon, a trachea and a connecting rod. The pipe joint is connected to an external air pump. The air pump compresses the gas and sends it into the balloon installed at the bottom of the stent through the trachea, causing the balloon to expand. After the balloon expands, it presses down on the connecting rod. After the connecting rod is pressed down, the cutting head is pushed out of the side groove and the slider is stretched. After use, the gas inside the balloon is emptied, and at the same time, the stretched elastic part will drive the cutting head to reset and fold into the side groove, thereby achieving the purpose of easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged schematic diagram of point A in the middle;

[0020] Figure 4 For this utility model Figure 2 A magnified schematic diagram of point B in the middle.

[0021] In the figure: 1. catheter body; 2. tube end; 3. tube head; 4. tube joint; 5. side groove; 6. cutter head; 7. folding mechanism; 701. slider; 702. connecting rod; 703. elastic member; 8. main tube body; 9. threaded groove; 10. branch tube; 11. guide groove; 12. guide block; 13. bracket; 14. balloon; 15. trachea. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0024] like Figure 1-4 As shown, a technical solution provided by the utility model:

[0025] An intravascular support catheter with a rotary cutting tip comprises a catheter body 1, a tube end 2 is integrally formed at the top of the catheter body 1, a tube head 3 is integrally formed at the bottom of the catheter body 1, and the middle parts of both ends of the tube head 3 are connected with a tube joint 4; both sides of the tube head 3 are provided with side grooves 5 inwardly, and a cutter head 6 is movably installed inside the two side grooves 5, and a folding mechanism 7 is arranged between the cutter head 6 and the catheter body 1, and the folding mechanism 7 comprises a slider 701, a connecting rod 702 and an elastic member 703; a slider 701 is arranged just above the top of the catheter body 1 near the cutter head 6, the middle part of the slider 701 is movably sleeved with the connecting rod 702, the bottom end of the connecting rod 702 is fixedly connected to the cutter head 6, both sides of the top of the cutter head 6 are fixedly connected with elastic members 703, the top of the elastic member 703 is fixedly connected to the slider 701, and the middle parts of the two elastic members 703 are both "S" shaped;

[0026] In this embodiment, during daily use, the cutting head 6 is received in the side groove 5, and the elastic members 703 arranged on both sides of the top of the cutting head 6 will pull the cutting head 6 so that the cutting head 6 is locked into the side groove 5. At the same time, the middle part of the top of the cutting head 6 drives the connecting rod 702 to pass through the slider 701 and move to the outside of the bottom end of the balloon 14. In this way, the cutting head 6 will not cause damage to medical staff and patients when being taken and introduced, thereby improving safety during use.

[0027] like Figure 2 As shown, a main body 8 is movably mounted at the top of the catheter body 1, and a thread groove 9 is arranged on the outside of the main body 8, and the thread groove 9 is threadedly connected to the catheter body 1, and the outside of the top of the catheter body 1 is connected with a branch pipe 10; a guide groove 11 is opened on the inner wall of the catheter body 1 on one side of the top near the side groove 5, and a guide block 12 is fixedly connected to the side of the top of the cutter head 6 near the guide groove 11, and the guide block 12 is slidably connected to the guide groove 11;

[0028] In this embodiment, when the cutter head 6 moves, the guide block 12 on the top side of the cutter head 6 will slide along the guide groove 11 on the inner wall of the catheter body 1 for guidance, and the cutter head 6 is more stable and less likely to be displaced during cutting.

[0029] like Figure 3 As shown, a bracket 13 is provided at the top of the catheter body 1 near the slider 701, a balloon 14 is provided at the bottom of the bracket 13, and the top of the balloon 14 is connected to the pipe joint 4 through the trachea 15;

[0030] In this embodiment, the pipe joint 4 is connected to an external air pump, and the air pump compresses the gas and sends it into the balloon 14 installed at the bottom end of the bracket 13 through the air pipe 15, so that the balloon 14 expands. After the balloon 14 expands, it presses down the connecting rod 702. After the connecting rod 702 is pressed down, the cutter head 6 is pushed out of the side groove 5 and the slider 701 is stretched. After use, the gas inside the balloon 14 is emptied, and the stretched elastic member 703 will drive the cutter head 6 to reset and fold into the side groove 5.

[0031] Working principle: During daily use, the blade head 6 is received in the side groove 5, and the elastic members 703 arranged on both sides of the top of the blade head 6 will pull the blade head 6 so that the blade head 6 is locked into the side groove 5. At the same time, the middle part of the top of the blade head 6 drives the connecting rod 702 to pass through the slider 701 and move to the outside of the bottom end of the balloon 14, so that the blade head 6 will not cause damage to medical staff and patients during taking and introducing; when the blade head 6 needs to be used to cut the inner wall tissue of the blood vessel, the pipe joint 4 is connected to the external air pump, and the air pump compresses the gas and sends it into the balloon 14 installed at the bottom end of the bracket 13 through the trachea 15, so that the balloon 14 expands. After the balloon 14 expands, it presses down the connecting rod 702. After the connecting rod 702 is pressed down, the blade head 6 is pushed out of the side groove 5 and the slider 701 is stretched. After use, the gas inside the balloon 14 is emptied, and at the same time, the stretched elastic member 703 drives the blade head 6 to reset and fold into the side groove 5.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An intravascular support catheter with a rotary cutting tip, characterized in that: include A catheter body (1), wherein a tube end (2) is integrally formed at the top end of the catheter body (1), a tube head (3) is integrally formed at the bottom end of the catheter body (1), and the middle parts of both ends of the tube head (3) are connected to a tube joint (4); Side grooves (5) are provided inwardly on both sides of the tube head (3), and cutter heads (6) are movably installed inside the two side grooves (5). A folding mechanism (7) is provided between the cutter head (6) and the catheter body (1), and the folding mechanism (7) includes a slider (701), a connecting rod (702) and an elastic member (703).

2. An intravascular support catheter with a rotary cutting tip according to claim 1, characterized in that: A main pipe (8) is movably mounted at the top end of the catheter body (1), a thread groove (9) is arranged on the outside of the main pipe body (8), the thread groove (9) is threadedly connected to the catheter body (1), and branch pipes (10) are connected to the outside of both sides of the top end of the catheter body (1).

3. The intravascular support catheter with a rotary cutting tip according to claim 1, characterized in that: A guide groove (11) is provided on the inner wall of the catheter body (1) near the top end of the side groove (5); a guide block (12) is fixedly connected to the top end of the cutter head (6) near the guide groove (11); and the guide block (12) is slidably connected to the guide groove (11).

4. The intravascular support catheter with a rotary cutting tip according to claim 1, characterized in that: A slider (701) is arranged on the catheter body (1) just above the top end of the cutter head (6); the middle part of the slider (701) is movably connected to the connecting rod (702); the bottom end of the connecting rod (702) is fixedly connected to the cutter head (6); elastic members (703) are fixedly connected to both sides of the top end of the cutter head (6); and the top end of the elastic member (703) is fixedly connected to the slider (701).

5. The intravascular support catheter with a rotary cutting tip according to claim 4, characterized in that: The middle parts of the two elastic members (703) are both "S" shaped.

6. The intravascular support catheter with a rotary cutting tip according to claim 4, characterized in that: A support (13) is provided at the top end of the catheter body (1) close to the slider (701), a balloon (14) is provided at the bottom end of the support (13), and the top end of the balloon (14) is connected to the pipe joint (4) through the trachea (15).

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