Cardiac intervention catheter nursing fixator

Abstract

According to the heart intervention catheter nursing fixator, a catheter penetrates into a through hole to limit circumferential movement of the catheter, then a pushing threaded sleeve controls open clamping flaps to be closed into a cylindrical shape, arc-shaped helical teeth which are oppositely or oppositely arranged on the clamping flaps on the two sides are meshed with the catheter installed in the through hole in an extrusion mode, and therefore the catheter is fixed. Sliding of the catheter in the through hole is limited, all-directional stable fixation of the catheter is achieved, and the problems of poor skin breathability, pruritus, redness and swelling and the like caused by long-time pasting of hook-and-loop fasteners are solved; the arc-shaped oblique teeth on the inner walls of the clamping flaps are 45-degree oblique teeth, the oblique occlusion fixing strength of the catheter is guaranteed, the distance between the top ends of the arc-shaped oblique teeth and the inner walls of the clamping flaps is 2-5 mm, effective clamping of the catheter can be guaranteed, and the precise structure of the catheter is prevented from being damaged due to excessive extrusion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a cardiac interventional catheter nursing fixator. Background Art

[0002] As a new and key technology for diagnosing and treating cardiovascular diseases, cardiac interventional surgery has been widely used in clinical practice due to its significant advantages such as minimal trauma, definite efficacy, and rapid recovery. During cardiac interventional surgery and postoperative recovery, stable catheter fixation is crucial to ensuring surgical effectiveness and patient safety. Currently, in clinical practice, catheter fixation is performed by two methods: Velcro fixation and bandage tying. However, the current clinical fixation methods have the following defects: First, the Velcro fixation method usually involves directly sticking the Velcro on the patient's body surface to fix the catheter. After the attachment is completed, it is very inconvenient to adjust the position of the catheter and replace it. If the catheter position needs to be adjusted during or after surgery, the Velcro often needs to be torn off, which is not only cumbersome but may also cause additional irritation to the patient's skin. In addition, the Velcro needs to fit tightly to the patient's skin to ensure the fixation effect. Prolonged attachment will cause the local skin of the patient to have poor air permeability, which can easily cause discomfort symptoms such as itching, redness and swelling. Secondly, while the rope-binding method of securing the catheter prevents direct skin irritation from Velcro to a certain extent, due to the special material of cardiac interventional catheters, their delicate internal structure and inability to withstand excessive compression forces, the rope cannot be tied too tightly during the tying process. This makes the catheter very likely to loosen during daily activities or changes in body position, and in severe cases, there is even a risk of the catheter falling out of the patient's body.

[0003] Therefore, the present invention discloses a cardiac interventional catheter nursing fixator, which effectively improves the catheter fixation stability, reduces patient discomfort and is convenient for clinical operation, and has become a technical problem that needs to be solved urgently in the current medical field. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: A cardiac interventional catheter nursing fixator, comprising: a U-shaped frame and a fixing rod; A square sleeve is integrally provided on the outer wall of one side of the 匚-shaped frame to slide and install a fixing rod; A screw rod is provided in the middle of the fixing rod for sliding connection with a square sleeve; a through hole is provided in the middle of the fixing rod, and external threaded sleeves are symmetrically provided on both sides of the fixing rod; The outer array of the external threaded sleeve is provided with a slot for rotating the mounting clip, and the threaded sleeve is connected to the push screw sleeve; The inner diameter of the clamping petal is the same as the inner diameter of the external threaded sleeve and the through hole. The rear end of the clamping petal is provided with a protrusion movable connection slot, and the inner wall of the clamping petal is provided with a plurality of arc-shaped oblique teeth in an array. Furthermore, the 匚-shaped frame is an inverted 匚-shaped frame body, and screw holes are provided on the side walls of the 匚-shaped frame for threaded installation of fixing screws; the 匚-shaped frame is buckled and connected to the bed rod body, and the fixing screws are used to achieve a stable installation of the 匚-shaped frame; Furthermore, a square groove is provided in the middle of the square sleeve for slidingly installing a screw, and an adjusting sleeve is provided at the front end of the square sleeve for rotating; the adjusting sleeve is threadedly connected to the screw; and the linear sliding of the screw in the square sleeve is controlled by the adjusting sleeve; Furthermore, a square block is provided at the rear end of the screw rod and linearly slidably connected with the square groove; Furthermore, the inclination angle of the arc-shaped bevel teeth is 45°, and the straight-line distance between the top end of the arc-shaped bevel teeth and the inner wall of the clip is between 1-3 mm; The arc-shaped oblique teeth on the inner walls of the two sides of the clip are directed towards each other or in opposite directions; By pushing the screw sleeve to control the clamping petals arranged in the array to be formed into a cylindrical shape, the arc-shaped oblique teeth arranged on both sides facing or opposite to each other engage and squeeze the catheter installed in the through hole, thereby limiting the sliding of the catheter inside the through hole; Furthermore, a torsion spring movable connection slot is provided on the protrusion, and the torsion spring causes the clamping petals to open upward; The beneficial effects are: The present invention discloses a cardiac interventional catheter nursing fixator. The device inserts a catheter into a through hole to restrict the circumferential movement of the catheter. Then, a screw sleeve is pushed to control the opened clamping flaps to close into a cylindrical shape. The arc-shaped oblique teeth arranged on both sides of the clamping flaps face each other or oppositely to squeeze the catheter installed in the through hole, restricting the sliding of the catheter inside the through hole. This achieves all-round and stable fixation of the catheter, eliminating the problems of poor skin permeability, itching, redness and swelling caused by long-term Velcro application. The curved bevel teeth on the inner wall of the clip are 45° beveled to ensure the oblique bite and fixation strength of the catheter. The top of the curved bevel teeth is designed to be 2-5mm away from the inner wall of the clip, which can not only ensure the effective clamping of the catheter, but also avoid excessive squeezing and damage to the delicate structure of the catheter. In addition, when the position of the catheter needs to be adjusted, the vertical position of the fixing rod on the operating bed is adjusted by fixing the screw in conjunction with the U-shaped frame; the lateral position of the fixing rod is adjusted by adjusting the screw sleeve in conjunction with the screw; and the clamping flap can be loosened by pushing the screw sleeve to adjust the telescopic distance of the catheter; the flexible adjustment of the fixed position of the catheter is achieved without the need for tearing or untying operations, which solves the problem of inconvenient adjustment of traditional Velcro. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0006] Figure 1 The figure is a schematic diagram of the overall structure of a cardiac interventional catheter care fixator; Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a cardiac interventional catheter nursing fixator; Figure 3 The present invention is a schematic diagram of the cross-sectional structure of a fixing rod of a cardiac interventional catheter nursing fixing device; Figure 4 It is a partially enlarged structural diagram of a cardiac interventional catheter care fixator; Figure 5 The present invention is a schematic diagram of the structure of a clip valve of a cardiac interventional catheter care fixator.

[0007] In the accompanying drawings, the components represented by the reference numerals are as follows: 1-匚-shaped frame, 101-square sleeve, 1011-square groove, 102-fixing screw, 103-adjusting sleeve, 2-screw, 202-fixing rod, 2021-through hole, 203-externally threaded sleeve, 3-pushing sleeve, 4-clamping petal, 401-arc-shaped bevel teeth, 402-bump. DETAILED DESCRIPTION

[0008] In order to solve the problems existing in the prior art cardiac interventional catheter care fixator, the present invention discloses a cardiac interventional catheter care fixator, comprising: a 匚-shaped frame 1, a fixing rod 202; The outer wall of one side of the 匚-shaped frame 1 is integrally provided with a square sleeve 101 for slidingly mounting a fixing rod 202; A screw rod 2 is provided in the middle of the fixing rod 202 to be slidably connected to the square sleeve 101; a through hole 2021 is provided in the middle of the fixing rod 202, and external threaded sleeves 203 are symmetrically provided on both sides of the fixing rod 202; The outer array of the external threaded sleeve 203 is provided with a slot for rotating the mounting clip 4, and the threaded sleeve 203 is threadedly connected to push the screw sleeve; The inner diameter of the clamping petal 4 is the same as the inner diameter of the external threaded sleeve 203 and the through hole 2021. A protrusion 402 is provided at the rear end of the clamping petal 4 to movably connect to the slot. A plurality of arc-shaped oblique teeth are arranged in an array on the inner wall of the clamping petal 4. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0009] Example 1 like Figure 1 FIG2 is a schematic diagram of the overall structure of the present invention. In the present invention, a cardiac intervention catheter care fixator is disclosed, which is provided with a 匚-shaped frame 1 and a fixing rod 202; The outer wall of one side of the frame 1 is integrally provided with a square sleeve 101 for slidingly mounting a fixed rod 202; A screw rod 2 is slidingly connected to the square sleeve 101 in the middle of the fixed rod 202; a through hole 2021 is formed in the middle of the fixed rod 202, and outer threaded sleeves 203 are symmetrically arranged on both sides of the fixed rod 202; The outer side of the outer threaded sleeve 203 is arrayed with clamping grooves for rotationally mounting clamping pieces 4, and the outer threaded sleeve 203 is threadedly connected with a pushing sleeve; The inner diameter of the clamping piece 4 is the same as that of the outer threaded sleeve 203 and the through hole 2021, a protrusion 402 is arranged at the rear end of the clamping piece 4 for movably connecting the clamping groove, and a plurality of arc-shaped inclined teeth are arrayed on the inner wall of the clamping piece 4; Specifically, the fixed rod 202, the pushing sleeve 3 and the clamping piece 4 are all made of hard transparent ABS plastic, which can not only ensure the stable fixation of the catheter but also intuitively observe the fixation strength and deformation of the catheter under pressure through the transparent fixed rod 202, the pushing sleeve 3 and the clamping piece 4, so as to further avoid excessive extrusion damage to the precise structure of the catheter through subjective judgment of the operator; In this embodiment, the frame 1 is an inverted frame 1 body, and screw holes are formed in the side wall of the frame 1 for threadedly mounting fixed screw rods 2102; the frame 1 is connected to the bed rod body through buckling, and the stable installation of the frame 1 is realized in cooperation with the fixed screw rods 2102; specifically, the frame 1 is made of high-strength aluminum alloy material, the wall thickness is 3-5 mm, and the opening width of the inverted design can be adjusted in the range of 20-50 mm, which is suitable for bed rod bodies of different specifications; In this embodiment, a square groove 1011 is formed in the middle of the square sleeve 101 for slidingly mounting a screw rod 2, and an adjusting sleeve 103 is rotationally arranged at the front end of the square sleeve 101; the adjusting sleeve 103 is threadedly connected with the screw rod 2; the linear sliding of the screw rod 2 in the square sleeve 101 is controlled through the adjusting sleeve 103; In this embodiment, a square block is arranged at the rear end of the screw rod 2 for linear sliding connection with the square groove 1011; In this embodiment, the inclination angle of the arc-shaped inclined teeth 401 is 45°, and the straight-line distance between the top end of the arc-shaped inclined teeth 401 and the inner wall of the clamping piece 4 is between 1-3 mm; The directions of the arc-shaped inclined teeth 401 on the inner walls of the clamping pieces 4 on both sides are the same or opposite; The clamping pieces 4 are shaped into a cylindrical shape through the control of the pushing sleeve, so that the arc-shaped inclined teeth 401 on both sides are arranged in the same direction or opposite directions and bite and extrude the catheter installed in the through hole 2021, thereby limiting the sliding of the catheter inside the through hole 2021; In this embodiment, a torsional spring is arranged on the protrusion 402 for movably connecting the clamping groove, and the clamping piece 4 is opened upward by the torsional spring; In this embodiment, the outer corners of the frame 1, the square sleeve 101, the fixed rod 202 and the exposed edge of the clamping piece 4 are all rounded; Method for use After the catheter is inserted into the through hole 2021, the frame 1 is buckled on the bed guardrail or the fixed rod 202, the fixed screw rod 2102 on the side wall of the frame 1 is tightened, the end of the frame 1 is tightly pressed against the bed rod body, and the whole device is stably fixed in the preset position of the bed through the friction force and mechanical locking effect, so that the vertical position of the fixed rod 202 on the operating bed is determined. The adjusting sleeve 103 at the front end of the square sleeve 101 is rotated, the screw rod 2 is driven to move linearly along the square groove 1011 through thread transmission, and then the horizontal distance between the fixed rod 202 and the patient's body is adjusted, so that the catheter is not excessively pulled.

[0010] The clamping piece 4 is closed and pressed to control the catheter through rotation and pushing of the screw sleeve, so that the catheter is fixed. The subsequent adjustment process can be realized through the fixed screw rod 2102, the adjusting sleeve 103 and the pushing screw sleeve. In summary, the heart intervention catheter nursing fixator is disclosed, which aims to solve many clinical pain points in the traditional heart intervention catheter fixing mode through innovative mechanical structure design. Specifically, the core purpose is to: Firstly, the safe and stable fixation of the catheter is realized. Through the bed body connecting structure of the frame 1 and the fixed screw rod 2102, the direct dependence on the patient's skin is eliminated, and the problems of skin itching, swelling and poor air permeability caused by magic tape sticking are avoided. Meanwhile, the composite clamping mode of the combined enclosure of the clamping piece 4 and the engagement of the arc-shaped bevel gear 401 is used, so that the catheter internal precision structure is prevented from being excessively pressed and damaged through the precise tooth pitch design (1-3mm) and the elastic material selection under the premise of providing sufficient fixing force, and the catheter is ensured not to be loose and not to be detached when the patient moves or the body position changes. Secondly, flexible and convenient multi-dimensional adjustment function is provided. The vertical position adjustment is realized by the cooperation of the fixed screw rod 2102 and the frame 1, the horizontal distance adjustment is realized by the thread transmission of the adjusting sleeve 103 and the screw rod 2, and the free adjustment of the catheter extension length is realized by the tightness control of the pushing screw sleeve, so that the medical staff can optimize the catheter fixing position at any time according to the operation demand and the patient recovery condition, and the problem of inconvenient adjustment of the traditional magic tape and binding method is solved. Finally, the efficiency of clinical operation and the comfort of patients are considered. The whole device is designed in a modular manner, and the installation, clamping and adjustment are completed through screwing actions, which are simple and intuitive, and convenient for medical staff to quickly start; at the same time, all structures indirectly related to patients are rounded, so as to avoid accidental scratches caused by sharp corners, eliminate the disadvantages of the traditional method from the mechanical fixing principle, and provide a safe, reliable and humanized catheter fixing solution for cardiac interventional surgery and postoperative care. The above disclosed preferred embodiments of the application are only used to help illustrate the application, and the preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described.

Claims

1. A cardiac interventional catheter care fixator, characterized in that: Comprising: A U-shaped frame and a fixing rod; On one outer wall of the U-shaped frame, a square sleeve is integrally provided and slidably mounts the fixing rod; In the middle of the fixing rod, a screw rod is provided and slidably connected to the square sleeve; a through hole is opened in the middle of the fixing rod, and outer threaded sleeves are symmetrically arranged on both sides of the fixing rod; On the outer side of the outer threaded sleeve, a card slot is arrayedly opened and a clamping flap is rotatably installed, and a pushing screw sleeve is threadedly connected to the outer threaded sleeve; The inner diameter of the clamping flap is the same as the inner diameters of the outer threaded sleeve and the through hole. A convex block is provided at the rear end of the clamping flap and is movably connected to the card slot, and a number of arc-shaped inclined teeth are arrayedly arranged on the inner wall of the clamping flap.

2. A cardiac interventional catheter care fixator according to claim 1, characterized in that: The U-shaped frame is an inverted U-shaped frame body, and a screw hole is opened on the side wall of the U-shaped frame and a fixing screw is threadedly installed; the U-shaped frame is buckled and connected to the bed rod body, and the stable installation of the U-shaped frame is achieved by cooperating with the fixing screw.

3. A cardiac interventional catheter care fixator according to claim 1, characterized in that: In the middle of the square sleeve, a square groove is opened and the screw rod is slidably installed, and an adjusting sleeve is rotatably provided at the front end of the square sleeve; the adjusting sleeve is threadedly connected to the screw rod; the linear sliding of the screw rod in the square sleeve is controlled by the adjusting sleeve.

4. A cardiac interventional catheter care fixator according to claim 1, characterized in that: A square block is provided at the rear end of the screw rod and is linearly slidably connected to the square groove.

5. A cardiac interventional catheter care fixator according to claim 1, characterized in that: The inclination angle of the arc-shaped inclined teeth is 45°, and the straight-line distance from the top of the arc-shaped inclined teeth to the inner wall of the clamping flap is between 1-3 mm; And the directions of the arc-shaped inclined teeth on the inner walls of the clamping flaps on both sides are opposite or the same; By pushing the screw sleeve, the arrayed clamping flaps are controlled to form a cylindrical shape, so that the arc-shaped inclined teeth arranged opposite or the same on both sides bite and squeeze the catheter installed in the through hole, restricting the sliding of the catheter inside the through hole.

6. A cardiac interventional catheter care fixator according to claim 1, characterized in that: A torsion spring is provided on the convex block and is movably connected to the card slot, and the clamping flap is tilted and opened by the torsion spring.

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