A cannula positioning system

Abstract

An embodiment of the present application provides a cannula positioning system, the system comprising the cannula and a display structure; the end of the cannula inserted into a living body is provided with a magnetic part, the display structure is arranged outside the body, and movable ferromagnetic metal powder is provided in the display structure, the ferromagnetic metal powder moves with the movement position of the magnetic part, and then the position of the cannula in the living body is determined by the position change of the ferromagnetic metal powder. Through the embodiment of the present application, the end of the cannula kit body inserted into the living body can be positioned more accurately.

Description

Technical Field

[0001] The embodiments of the present application belong to the technical field of medical devices, and more specifically, relate to a cannula positioning system. Background Art

[0002] During extracorporeal membrane oxygenation, doctors need to use ultrasound or X-rays to determine the end position of the cannula during the cannula intubation process. However, in the field emergency environment, in non-intensive care unit conditions, the cannula is inserted into the thicker blood vessels of the human body, such as the arteries and veins in the neck, the proximal large blood vessels in the chest cavity, and the femoral arteries and veins, which often rely on the doctor's experience, which often leads to inaccuracies. Summary of the invention

[0003] In order to solve or alleviate the problems existing in the above-mentioned prior art, an embodiment of the present application provides a cannula positioning system, the system comprising a cannula and a display structure;

[0004] The cannula includes a tip portion and a tube body connected to each other;

[0005] A groove is provided at the connection between the tip and the tube body, a magnetic piece is provided in the groove, and the tube body is sleeved on the periphery of the magnetic piece;

[0006] The display structure includes a horizontal position detection mechanism and a display structure arranged at the inner bottom of a transparent box body. The horizontal position detection mechanism is located below the display structure and is used to detect whether the display structure is tilted. The display structure is an arc-shaped groove structure. The arc-shaped groove mechanism is filled with ferromagnetic metal powder. The ferromagnetic metal powder moves with the movement of the magnetic part, and then the position of the cannula in the living body is determined by the position change of the ferromagnetic metal powder.

[0007] As a preferred embodiment of the present application, a plurality of spaced-apart dividing structures are provided in the arc surface groove mechanism, the plurality of dividing structures are not connected to each other, and the plurality of dividing structures extend from the center to the outside.

[0008] As a preferred embodiment of the present application, the length of the arc chord of the arc groove mechanism is smaller than the length of the arc radius.

[0009] As a preferred embodiment of the present application, the transparent box body is a cube, and the distance between the magnetic member and the end of the tip portion away from the magnetic member is equal to the distance from the center of the transparent box body to the edge of the transparent box body.

[0010] As a preferred embodiment of the present application, the distance between the magnetic member and the end of the tip portion away from the magnetic member and the distance from the center of the transparent box body to the edge of the transparent box body are 5 cm.

[0011] As a preferred embodiment of the present application, the horizontal position detection device is a closed cavity structure, the cavity structure is filled with liquid, a movable bubble is provided in the liquid, and when the horizontal position detection mechanism is in a horizontal position, the bubble is located at the center of the cavity structure.

[0012] As a preferred embodiment of the present application, a mark is provided at the center of the transparent box body. When the ferromagnetic metal powder moves to the mark and the bubble coincides with the mark, the end of the cannula inserted into the living body reaches a preset position.

[0013] As a preferred embodiment of the present application, an openable cover is provided on the side of the transparent box body.

[0014] Compared with the prior art, the embodiment of the present application provides a cannula positioning system. The present application cooperates with a magnetic part and ferromagnetic metal powder set at the end of the cannula, and uses a display structure to display the function to determine the position of the cannula inserted into the living body. The embodiment of the present application can make the positioning accuracy of the cannula inserted into the living body higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. Some specific embodiments of the present application will be described in detail in an illustrative and non-restrictive manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of a cannula positioning system provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of a top view of a display structure provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the cross-sectional structure of the display structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0020] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0021] When performing extracorporeal membrane oxygenation, a cannula needs to be inserted into a living body, and at the same time, it is necessary to ensure that the end of the cannula that extends deep into the body is inserted into a preset position so that the extracorporeal membrane oxygenation system can work properly. Therefore, the positioning of the end of the cannula that extends deep into the body is particularly important.

[0022] like Figure 1 As shown, an embodiment of the present application provides a cannula positioning system, the system comprising the cannula and a display structure 04, the end of the cannula inserted into a living body is provided with a magnetic member 03, that is, the embodiment of the present application determines the position of the cannula inserted into the living body through the cooperation of the magnetic member 03 at the end of the cannula and the display structure 04.

[0023] Specifically, the display structure 04 includes a horizontal position detection mechanism and a display structure 04 arranged at the bottom of the inner side of the transparent box body. The display structure 04 can conveniently observe the movement position of the magnetic member 03 at the end of the cannula through the transparent box body. The horizontal position detection mechanism is located below the display structure 04 and is used to detect whether the display structure 04 is tilted, because in the entire detection process of positioning the end after the cannula is inserted into the living body, it is very important that the display structure 04 is placed horizontally. The display structure 04 is an arc-shaped groove structure. The arc-shaped groove mechanism 04-1 is filled with ferromagnetic metal powder. The ferromagnetic metal powder moves with the movement of the magnetic member 03, and then the position of the cannula in the living body is determined by the position change of the ferromagnetic metal powder. In the embodiment of the present application, the ferromagnetic metal powder is fine iron powder, and the magnetic member 03 is a strong magnetic magnet, such as a neodymium iron boron magnet.

[0024] In one embodiment of the present application, the cannula includes a tip portion 01 and a tube body 02 that are connected to each other. When performing extracorporeal membrane oxygenation, the tip portion 01 is mainly used for puncture. In order to better arrange the magnetic component 03, a groove is provided at the connection between the tip portion 01 and the tube body 02, and the magnetic component 03 is provided in the groove. The tube body 02 is sleeved on the periphery of the magnetic component 03 of the tip portion 01. By arranging the magnetic component 03 in the groove and being wrapped by the tube body 02, it can be ensured that the magnetic component 03 is not leaked, and blood contamination will not be caused or the magnetism of the magnetic component 03 will not be affected.

[0025] In one embodiment of the present application, in order to provide a moving channel for the ferromagnetic metal powder to move under the action of the magnetic force of the magnetic part 03, a plurality of spaced-apart dividing structures 04-2 are provided in the arc groove mechanism 04-1, and the plurality of dividing structures 04-2 are not connected to each other, and the plurality of dividing structures 04-2 extend from the center to the outside. By providing the dividing structure 04-2, it can be ensured that the ferromagnetic metal powder moves along the channel formed by the dividing structure 04-2 during the movement process. On the one hand, by observing whether the three points formed by the center of the dividing structure 04-2, the mark set at the center of the box body, and the bubble are in a straight line of viewing angle, squinting can be avoided. On the other hand, the position of the cannula can be more clearly reflected according to the position of most of the ferromagnetic metal powder.

[0026] like Figure 2 As shown, preferably, the length of the arc chord is smaller than the length of the arc radius, the arc chord is the diameter of the outermost opening of the arc groove, and the arc radius is the distance between the outer wall of the arc groove and the center point. Since the length of the arc chord a is smaller than the length of the arc radius b, the ferromagnetic metal powder can move a sufficient distance, thereby avoiding the arc slope being too large, which causes the ferromagnetic metal powder to easily accumulate at the bottom of the arc groove.

[0027] Preferably, the transparent box is a cube, and the distance between the magnetic part 03 and the end of the tip 01 away from the magnetic part 03 is equal to the distance from the center of the transparent box to the edge of the transparent box. When the ferromagnetic metal powder gathers at the center of the arc in a horizontal state, it means that the tip 01 is located at the edge of the cube.

[0028] Preferably, the distance between the magnetic member 03 and the end of the tip portion 01 away from the magnetic member 03 and the distance from the center of the transparent box body to the edge of the transparent box body are 5 cm.

[0029] like Figure 3 As shown, in one embodiment of the present application, the horizontal position detection mechanism is a closed cavity structure, the cavity structure is filled with liquid 04-3, a movable bubble 04-4 is provided in the liquid 04-3, when the horizontal position detection mechanism is in a horizontal position, the bubble 04-4 is located at the center of the cavity structure, and the setting of the horizontal position detection mechanism can detect whether the display structure 04 is in a horizontal position.

[0030] In one embodiment of the present application, a mark 04-5 is set at the center of the transparent box body, and the mark 04-5 can be a circular structure. When the ferromagnetic metal powder moves to the mark and the bubble 04-4 coincides with the mark 04-5, the end of the cannula inserted into the living body reaches a preset position.

[0031] In one embodiment of the present application, an openable cover is provided on the side of the transparent box body, and the cover can be opened to place or take out the ferromagnetic metal powder.

[0032] During specific use, first, according to the insertion of the cannula into the living body to a certain position, the display structure 04 is placed at the estimated position where the end of the cannula outside the body is expected to reach. As the cannula is inserted, observe whether the horizontal position detection mechanism indicates that the arc groove structure is in a horizontal state. If so, observe through the transparent box body that the ferromagnetic metal powder moves along the channel formed between the segmentation structures 04-2 under the action of the magnetic member 03. When the aggregation position of the ferromagnetic metal powder in the display structure 04 reaches the mark of the display structure 04, and the bubble 04-4 coincides with the mark, the end of the cannula inserted into the living body at one end reaches the preset position.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cannula positioning system, characterized in that: The system includes a cannula and a display structure; The cannula includes a tip portion and a tube body connected to each other; A groove is provided at the connection between the tip and the tube body, a magnetic piece is provided in the groove, and the tube body is sleeved on the periphery of the magnetic piece; The display structure includes a horizontal position detection mechanism and a display structure arranged at the inner bottom of a transparent box body. The horizontal position detection mechanism is located below the display structure and is used to detect whether the display structure is tilted. The display structure is an arc-shaped groove structure. The arc-shaped groove structure is filled with ferromagnetic metal powder. The ferromagnetic metal powder moves with the movement of the magnetic part, and then the position of the cannula in the living body is determined by the position change of the ferromagnetic metal powder.

2. A cannula positioning system as claimed in claim 1, characterized in that: A plurality of spaced-apart dividing structures are arranged in the arc surface groove-shaped structure, the plurality of dividing structures are not connected to each other, and the plurality of dividing structures extend from the center to the outside.

3. A cannula positioning system as claimed in claim 1, characterized in that: The length of the arc chord of the arc groove structure is smaller than the length of the arc radius.

4. A cannula positioning system as claimed in claim 1, characterized in that: The transparent box body is a cube, and the distance between the magnetic piece and the end of the tip portion away from the magnetic piece is equal to the distance from the center of the transparent box body to the edge of the transparent box body.

5. A cannula positioning system as claimed in claim 4, characterized in that: The distance between the magnetic piece and the end of the tip portion away from the magnetic piece and the distance between the center of the transparent box body and the edge of the transparent box body are 5 cm.

6. A cannula positioning system as claimed in claim 1, characterized in that: The horizontal position detection device is a closed cavity structure, the cavity structure is filled with liquid, a movable bubble is arranged in the liquid, and when the horizontal position detection mechanism is in a horizontal position, the bubble is located at the center of the cavity structure.

7. A cannula positioning system as claimed in claim 6, characterized in that: A mark is arranged at the center of the transparent box body. When the ferromagnetic metal powder moves to the mark and the air bubble coincides with the mark, the end of the cannula inserted into the living body reaches a preset position.

8. A cannula positioning system as claimed in claim 1, characterized in that: An openable cover is arranged on the side of the transparent box body.

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