Water stop clamp structure special for ultrasound contrast indwelling needle

Abstract

The utility model discloses a special water stop clamp structure for an ultrasound contrast indwelling needle in the technical field of ultrasound contrast auxiliary instruments, which comprises an outer frame of a special water stop clamp for the ultrasound contrast indwelling needle, the outer frame is in a square ring shape, a sliding groove is arranged on the outer frame, a sliding block is arranged on the sliding groove, and the sliding block is connected with the sliding groove. The bottom of the sliding block is connected with a pressing plate used for pressing a remaining needle catheter, the inner wall of the outer frame is provided with a protruding part matched with the bottom end of the pressing plate, and the sliding block is provided with a pressing assembly used for preventing the pressing plate from moving. The utility model solves the problems that most of remaining needles on the market at present are generally composed of an upper clamping assembly, a lower clamping assembly and a torsion spring, blood backflow is prevented by clamping a catheter, the blood backflow can be really prevented through the mode, but the remaining needles are limited by materials and have structural defects, the actual operation is inconvenient, and the working efficiency is high. The problems that the clamping effect can be achieved only by using certain force, single-hand operation is inconvenient, and conveying and stopping of the catheter are inconvenient to switch are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an ultrasonic contrast auxiliary instrument technical field, specifically is a kind of special water stop clamp structure of ultrasonic contrast indwelling needle. BACKGROUND

[0002] Ultrasound contrast, also known as acoustic contrast, is a technique that uses contrast agents to enhance the backscattered echo, significantly improving the resolution, sensitivity and specificity of ultrasound diagnosis. With the improvement of instrument performance and the emergence of new acoustic contrast agents, ultrasound contrast has effectively enhanced the two-dimensional ultrasound images of solid organs such as myocardium, liver, kidney and brain, and blood flow Doppler signals, reflecting and observing the blood perfusion of normal and pathological tissues, and has become a very important and promising development direction of ultrasound diagnosis.

[0003] During the ultrasound contrast process for patients, indwelling needles and catheters are needed for infusion, which requires the use of water stop clamps to squeeze and release the liquid in the catheter. Currently, the commonly used indwelling needles on the market are mostly composed of an upper clamp assembly, a lower clamp assembly and a torsion spring. By clamping the catheter, blood backflow is prevented. This method can indeed prevent blood backflow, but due to material limitations and structural defects, it is not convenient to operate, and a certain amount of force is required to achieve clamping. Single-handed operation is not convenient, and it is not convenient to switch between catheter delivery and stop.

[0004] Therefore, the skilled person in the art provides a special water stop clamp structure for ultrasonic contrast indwelling needles to solve the problems raised in the background art. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a special water stop clamp structure for ultrasonic contrast indwelling needles to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a special water stop clamp structure for ultrasonic contrast indwelling needles, including the outer frame of the special water stop clamp for ultrasonic contrast indwelling needle, the outer frame is square ring, the outer frame is equipped with sliding slot, the sliding slot is equipped with sliding block, the bottom of sliding block is connected with the pressing plate for pressing indwelling needle catheter, the inner wall of outer frame is equipped with the convex part matched with the bottom end of pressing plate, the sliding block is equipped with the pressing assembly for avoiding displacement of pressing plate.

[0007] Preferably, the pressing assembly includes a plurality of tooth slots opened in the outer frame, a pressing groove is provided on the sliding block, a button is slidably connected in the pressing groove, the button is hollow and has an open bottom, two ends of the button bottom are provided with plug rods matched with the tooth slots, a guide column is provided on the pressing groove, a sleeve is provided inside the button matched with the guide column, and a spring is provided between the guide column and the sleeve.

[0008] Preferably, two sides of the bottom of the pressing groove are respectively provided with rotation-stopping grooves, and the inserting rod is in sliding connection with the rotation-stopping grooves.

[0009] Preferably, the middle part of the outer frame is provided with a fixing plate, the fixing plate is provided with a guide groove, and the pressing plate is in sliding connection with the guide groove.

[0010] Preferably, the outer side of the outer frame is provided with a recess for facilitating hand holding.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1、In the utility model, through setting the outer frame of square ring shape, the catheter passes through the outer frame, the outer frame is provided with the movable pressing plate, the inner wall of the outer frame is equipped with the convex part, when the pressing plate is opposite to the convex part, the catheter will be extruded between the pressing plate and the convex part, when the pressing plate is separated from the convex part, the catheter loses the extrusion of the pressing plate and the convex part, can switch the extrusion and release of the catheter, can conveniently open and close the water stop clamp.

[0013] 2、In the utility model, through setting the button that can press, the inserting rod of the button two sides can be inserted to the tooth groove on the outer frame, can make the sliding block fixed, avoid the loosening of the pressing plate in the operation process, ensure the clamping effect of the catheter. DRAWINGS

[0014] Figure 1 It is the schematic diagram of the whole structure of the utility model.

[0015] Figure 2 It is the left side perspective sectional view of the utility model.

[0016] Figure 3 It is the utility model Figure 2 The enlarged view of A in the utility model.

[0017] In the drawing: 1, outer frame;2, sliding groove;3, sliding block;4, pressing plate;5, convex part;6, tooth groove;7, pressing groove;8, button;9, inserting rod;10, guide column;11, sleeve;12, spring;13, rotation-stopping groove;14, fixing plate;15, guide groove;16, recess;17, through hole;18, notch. PREFERRED EMBODIMENT

[0018] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

[0019] All elements in the present application are made of materials with good corrosion resistance and biocompatibility.

[0020] Please refer to Figures 1-3 In the utility model embodiment, a special water stop clamp structure for an ultrasonic contrast indwelling needle is provided, which comprises an outer frame 1 of the special water stop clamp for the ultrasonic contrast indwishing needle, wherein the outer frame 1 is in the form of a square ring, a sliding groove 2 is arranged on the outer frame 1, a sliding block 3 is arranged on the sliding groove 2, a pressing plate 4 for pressing the indwishing needle catheter is connected to the bottom of the sliding block 3, a convex part 5 matched with the bottom end of the pressing plate 4 is arranged on the inner wall of the outer frame 1, a pressing assembly for avoiding displacement of the pressing plate 4 is arranged on the sliding block 3, and a through hole 17 for the catheter to pass through is arranged on the outer frame 1.

[0021] The outer frame 1 is made of medical plastic and has a square ring shape as a whole, the sliding groove 2 is arranged on the top of the outer frame 1, the sliding block 3 is slidingly arranged on the sliding groove 2, the pressing plate 4 is fixedly connected to the bottom of the sliding block 3, the convex part 5 is arranged on the inner wall of the outer frame 1, the side opposite to the pressing plate 4 and the convex part 5 is smooth, so that the catheter is not damaged, the through hole 17 is arranged on the outer frame 1, the catheter of the ultrasonic contrast indwishing needle penetrates through the two through holes 17, the middle part of the catheter is located between the pressing plate 4 and the convex part 5, when the pressing plate 4 and the convex part 5 are arranged oppositely, the catheter is pressed by the pressing plate 4 and the convex part 5, at this time, the deformation amount is maximum, and the fluid in the catheter can be blocked, when the pressing plate 4 and the convex part 5 are staggered, the deformation amount of the catheter is reduced, and the fluid in the catheter can pass at this time, so that the catheter can be pressed and released conveniently.

[0022] In one embodiment, specifically, the pressing assembly comprises a plurality of tooth grooves 6 arranged on the outer frame 1, a pressing groove 7 is arranged on the sliding block 3, a button 8 is slidingly connected to the pressing groove 7, the button 8 is hollow and has an opening at the bottom, two ends of the bottom of the button 8 are provided with plug rods 9 matched with the tooth grooves 6, a guide column 10 is arranged on the pressing groove 7, a sleeve 11 matched with the guide column 10 is arranged in the button 8, and a spring 12 is arranged between the guide column 10 and the sleeve 11; both sides of the bottom of the pressing groove 7 are respectively provided with rotation stopping grooves 13, the plug rods 9 are slidingly connected with the rotation stopping grooves 13, the tooth grooves 6 are arranged on the outer frame 1, the pressing groove 7 is arranged on the sliding block 3, the button 8 is slidingly installed in the pressing groove 7, the plug rods 9 are fixedly connected to both sides of the bottom of the button 8, the rotation stopping grooves 13 are arranged on both sides of the bottom of the pressing groove 7, the plug rods 9 can be inserted into the tooth grooves 6, so that the sliding block 3 can be fixed conveniently, the guide column 10 is fixedly connected to the inside of the pressing groove 7, the sleeve 11 is fixedly connected to the inner top wall of the button 8, the spring 12 is located outside the guide column 10, the spring 12 can push the button 8 upward, so that the plug rods 9 can be clamped into the tooth grooves 6, the button 8 can be fixed conveniently, the position of the sliding block 3 can be switched conveniently, the catheter can be pressed and released conveniently, and the water stop clamp can be opened and closed conveniently.

[0023] The middle part of the outer frame 1 is provided with a fixing plate 14, the fixing plate 14 is provided with a guide groove 15, the pressing plate 4 is slidably connected with the guide groove 15, the fixing plate 14 is fixedly connected with the middle part of the outer frame 1, the guide groove 15 is arranged in the middle part of the fixing plate 14, and the pressing plate 4 is slidably connected with the guide groove 15, so that the movement of the pressing plate 4 can be limited.

[0024] On the basis of the above embodiment, specifically, the outer frame 1 is provided with a recess 16 on the outer side for facilitating hand holding.

[0025] When it is needed to stop the fluid conveying, the button 8 is pressed to separate the inserting rod 9 from the tooth groove 6, then the sliding block 3 is moved, so that the pressing plate 4 at the bottom of the sliding block 3 is moved to the position opposite to the convex part 5, in the process, the catheter is squeezed, and the fluid in the catheter is stopped at the squeezed position, then the button 8 is released, the spring 12 can make the inserting rod 9 be clamped in the tooth groove 6, so that the movement of the sliding block 3 is avoided, when it is needed to convey the fluid again, the button 8 is pressed to separate the inserting rod 9 from the tooth groove 6, then the sliding block 3 is slid to move the pressing plate 4 to other positions, the catheter is not squeezed by the pressing plate 4 and the convex part 5, so that the fluid conveying can be continued.

[0026] Further, the outer frame 1 is provided with a notch 18 for facilitating the catheter to be put in, the notch 18 is arranged at one side of the through hole 17, so that the catheter can be conveniently put in.

[0027] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A water stop clamp structure for an ultrasound contrast indwelling needle, characterized by: The utility model provides an outer frame (1) including water stop clamp special for ultrasonic contrast indwelling needle, the outer frame (1) is square ring, be equipped with sliding slot (2) on the outer frame (1), be equipped with sliding block (3) on the sliding slot (2), the bottom of sliding block (3) is connected with the pressing plate (4) for compacting indwelling needle conduit, be equipped with the convex part (5) with the bottom end cooperation of pressing plate (4) on the inner wall of outer frame (1); The sliding block (3) is equipped with a pressing assembly for preventing the displacement of the pressing plate (4).

2. The water stop clamp structure for an ultrasound contrast medium indwelling needle according to claim 1, characterized in that: The pressing assembly includes a plurality of tooth slots (6) formed on the outer frame (1), the sliding block (3) is equipped with a pressing groove (7), the pressing groove (7) is slidably connected with a button (8), the button (8) is hollow and has an open bottom, both ends of the bottom of the button (8) are equipped with plug rods (9) matched with the tooth slots (6), the pressing groove (7) is equipped with guide columns (10), the button (8) is internally equipped with sleeves (11) matched with the guide columns (10), springs (12) are arranged between the guide columns (10) and the sleeves (11).

3. The water stop clamp structure for an ultrasound contrast medium indwelling needle according to claim 2, characterized in that: Both sides of the bottom of the pressing groove (7) are respectively equipped with anti-rotation grooves (13), the plug rods (9) are slidably connected with the anti-rotation grooves (13).

4. The water stop clamp structure for an ultrasonic contrast medium retention needle according to claim 3, characterized in that: The middle part of the outer frame (1) is equipped with a fixing plate (14), the fixing plate (14) is formed with a guide groove (15), and the pressing plate (4) is slidably connected with the guide groove (15).

5. The water stop clamp structure for an ultrasound contrast indwelling needle according to claim 4, characterized in that: The outer side of the outer frame (1) is equipped with recesses (16) for convenient hand holding.

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