Remaining needle fixing device

Abstract

The utility model discloses an indwelling needle fixing device, and belongs to the technical field of medical instruments. Comprising a fixing assembly, the fixing assembly comprises an omni-directional fixing part and a supporting part, the omni-directional fixing part comprises a binding pressure belt capable of winding an indwelling needle, and the supporting part comprises a limiting strip capable of supporting the bottom end of a needle head part. An abutting rod is pulled so that the abutting rod can drive a binding pressure belt to move until the binding pressure belt is wound around the wrist of the patient, the abutting rod after winding and fixing is clamped in a positioning plate, and at the moment, the abutting rod extrudes a limiting strip, so that the limiting strip moves to the bottom end of a needle head part pushing plate to support a needle head part; at the moment, the remaining needle main body receives the winding pressure of the binding pressure belt and also has the synchronous effect of supporting force which keeps balance together with the pressure, so that the remaining needle can be fixed in all directions, and the remaining needle is prevented from loosening.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and more specifically, to a device for fixing an indwelling needle. Background Art

[0002] An indwelling needle is a medical device product, also known as a catheter indwelling needle, which is a device used to indwell a catheter in the human body. This product is made of galvanized steel wire or stainless steel wire and has a certain degree of elasticity and toughness. One end of the indwelling needle usually has a stimulator for puncturing the skin and tissue, while the other end is used to connect the catheter.

[0003] When using an indwelling needle, first remove the protective cover, puncture the blood vessel according to the aseptic operation specifications, and the puncture is successful when blood returns from the needle seat. Then pull out the needle tube, leaving the catheter in the blood vessel, then connect the cone head of the infusion set to the tube body, and fix the tube body to the human body with medical tape, and then you can infuse. Finally, after the infusion is completed, if you want to keep the tube in the human body for another infusion, you should inject some anti-coagulant into the catheter line and cover the tube mouth with a protective cap. Remove the protective cap and follow the steps next time you infuse.

[0004] In the prior art, indwelling needles are mostly fixed by medical tape. However, when the patient sweats a lot, the sweat will cause the stickiness of the tape to decrease, and the fixation between the tape and the indwelling needle will become unstable, which can easily cause the position of the indwelling needle to shift and become loose. In addition, the tape that fixes the indwelling needle is attached to the skin for a long time, which can easily damage the skin. In view of this, we propose an indwelling needle fixing device. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the present application is to provide an indwelling needle fixing device to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] An indwelling needle fixing device comprises: a fixing assembly, the fixing assembly is fixedly arranged on the outside of a through tube, and the other end of the through tube is fixedly connected to a needle component;

[0009] The fixing component is located at the connection between the through tube and the needle component, and the fixing component includes an all-round fixing component and a supporting component. The all-round fixing component includes a restraining pressure belt that can be wrapped around the patient and the indwelling needle, and the supporting component includes a limiting strip that can support the bottom end of the needle component. After the needle component is inserted into the patient's skin, the indwelling needle is fixed at the patient's infusion position by adjusting the fixing component, thereby achieving all-round balanced fixation of the indwelling needle.

[0010] As an optional solution to the technical solution of the present application document, the all-round fixing component also includes a cylinder fixedly connected to one end of the through tube and the needle component respectively, a movable groove is opened on the inner side of the cylinder, a rotating drum is rotatably connected to the outer side of the movable groove, a restraining pressure belt is wrapped around the outer side of the rotating drum, and a resist rod is fixedly connected to the other side of the restraining pressure belt.

[0011] As an optional solution of the technical solution of the present application document, the omnidirectional fixing component also includes a slot opened on the outside of the cylinder, and a positioning plate is fixedly arranged on the outside of the cylinder, and the positioning plate is symmetrical to the slot.

[0012] As an optional solution of the technical solution of the present application document, two slide grooves are symmetrically opened inside the cylinder, the slide grooves are located on the sides of the movable groove, and the inner side of the slide groove is rotatably connected to a rotating drum.

[0013] As an optional solution of the technical solution of the present application document, the side of the restraint pressure belt in contact with the skin is provided with wavy patterns, and the surface of the restraint pressure belt is made of a flat elastic knitted material.

[0014] As an optional solution to the technical solution of the present application document, the supporting component includes a limit groove opened on the outside of the cylinder, and the inner side of the limit groove is snap-connected with a limit strip, the limit strip is set to a stepped flexible material, and one end of the limit strip is fixedly connected to a round rod, and the round rod is embedded in the inner side of the positioning plate when not in use, and the round rod can slide on the inner side of the positioning plate.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of this application are:

[0017] The present application sets a fixing component on the inner side of the through tube. After the needle is inserted, the push rod can be pulled to drive the restraining pressure belt to move until the restraining pressure belt is wrapped around the patient's wrist. After the wrapping and fixing are completed, the push rod is engaged inside the positioning plate. At this time, the push rod squeezes the limit bar, causing the limit bar to move to the bottom end of the needle component push plate to support the needle component. At this time, in addition to accepting the pressure of the restraining pressure belt wrapped around the main body of the indwelling needle, there is also the synchronous effect of the supporting force that maintains a balance with the pressure, so that the indwelling needle can be fixed in all directions to prevent the indwelling needle from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall assembly state of an indwelling needle of an indwelling needle fixing device disclosed in a preferred embodiment of the present application;

[0019] Figure 2 This is an exploded schematic diagram of a fixing assembly of an indwelling needle fixing device disclosed in a preferred embodiment of the present application;

[0020] Figure 3 A top cross-sectional schematic diagram of a fixing assembly of an indwelling needle fixing device disclosed in a preferred embodiment of the present application;

[0021] Explanation of the numbers in the figure: 1. Fixed component; 11. Cylinder; 12. Slot; 13. Positioning plate; 14. Movable slot; 15. Rotating cylinder; 16. Restraining pressure belt; 17. Abutment rod; 18. Limiting strip; 19. Limiting slot; 2. Through tube; 3. Needle component. DETAILED DESCRIPTION

[0022] refer to Figure 1-3 , a technical solution proposed.

[0023] like Figure 1 As shown, the indwelling needle is composed of a through tube 2 and a needle component 3. A steel needle is fixed on the catheter to form the needle component 3. When the indwelling needle is not in use, a protective sleeve is provided on the outer side of the steel needle of the needle component 3. A needle holding handle is fixedly provided on one side of the needle component 3 to facilitate the medical staff to perform the needle operation. The needle component 3 is fixedly connected to the through tube 2, and liquid can flow in the needle component 3 and the through tube 2. The connection position of the needle component 3 and the through tube 2 limits the position of the through tube 2 and the needle component 3 by a fixing component 1.

[0024] like Figure 2 and Figure 3 As shown, the fixing component 1 includes a cylinder 11 fixedly connected to the fixing component 1 and one end of the needle component 3 respectively, the middle part of the cylinder 11 is an infusion channel, and a movable groove 14 is opened on the periphery of the infusion channel. The length of the movable groove 14 is smaller than the length of the infusion channel. A rotating cylinder 15 is rotatably connected to the inner side of the movable groove 14. Both ends of the rotating cylinder 15 are embedded in the slide groove. The slide grooves are both arranged in the cylinder 11 at a position flush with the movable groove 14. The rotating cylinder 15 can rotate outside the movable groove 14. When the rotating cylinder 15 rotates, both ends will be restricted by the slide groove, thereby protecting the stability of the rotation of the rotating cylinder 15. A binding pressure belt 16 is fixedly sleeved on the outer side of the rotating cylinder 15. The surface of the binding pressure belt 16 is provided with wavy patterns, and the side in contact with the skin is a flat elastic knitted material. A stop rod 17 is fixedly connected to the end of the binding pressure belt 16, and the stop rod 17 is arranged as a flat I-shaped plate.

[0025] When the indwelling needle is not in use, the push rod 17 is fitted on the outside of the slot 12, the slot 12 is set on the outside of the cylinder 11, the size of the slot 12 is equal to the size of the restraining pressure belt 16, the restraining pressure belt 16 can move freely inside the slot 12, the outside of the cylinder 11 is fixedly connected to the positioning plate 13 at a symmetrical position between the slot 12, the inside of the positioning plate 13 is provided with a slot, the size of the slot is equal to the size of the push rod 17, and the push rod 17 can be clamped on the inside of the positioning plate 13;

[0026] When using the indwelling needle, first remove the protective cover, puncture the blood vessel according to the aseptic operation specifications, and the puncture is successful when blood returns from the needle component 3 and the fixing component 1. Before performing the infusion, the medical staff pulls the push rod 17 on the outside of the fixing component 1, and the push rod 17 drives the restraining pressure belt 16 to move out of the slot 12. While the restraining pressure belt 16 moves, the rotating drum 15 also rotates stably in the slide groove to ensure that the restraining pressure belt 16 moves out stably and smoothly, and then wrap the restraining pressure belt 16 around the patient's wrist, for example, in an 8-shaped shape around the outside of the through tube 2 and the needle seat of the fixing component 1. After the circle fixation is completed, the push rod 17 at one end of the restraining pressure belt 16 is engaged with the inner side of the positioning plate 13, thereby fixing the indwelling needle as a whole in all directions.

[0027] like Figure 2 and Figure 3 As shown, one end of the positioning plate 13 close to the fixing assembly 1 is slidably connected with a round rod, the other end of the round rod passes through the limiting groove 19 and is fixedly connected with the limiting strip 18, the limiting strip 18 is engaged with the inner side of the limiting groove 19, and the limiting groove 19 is set to a stepped flexible material;

[0028] When the push rod 17 is completely engaged with the inner side of the positioning plate 13, the round rod set on the inner side of the positioning plate 13 in the initial state will be acted upon by the force of the push rod 17. The push rod 17 squeezes the round rod so that the round rod moves eastward, and the round rod drives the limit bar 18 to move. The limit bar 18 moves and is no longer engaged with the inner side of the limit groove 19, but moves toward the direction of the needle component 3 until it moves to the bottom of the needle seat of the needle component 3, supporting the bottom of the needle component 3 that is inserted obliquely, without the need to fill the bottom end of the steel needle with sterilizing cotton laterally, and at the same time, it can also form a mutual force together with the pressure applied by the restraining pressure belt 16, thereby avoiding the position deviation of the needle component 3 caused by the different sizes between the steel needle of the needle component 3 that is obliquely entered and the needle seat of the needle component 3, so as to achieve the purpose of ensuring the stable position of the needle component 3.

[0029] When using the indwelling needle, puncture the blood vessel according to the aseptic operation specifications. After the puncture is successful when blood returns to the needle seat, pull out the needle tube and leave the catheter in the blood vessel. Then pull the outer support rod 17 of the fixing component 1, and the support rod 17 drives the restraining pressure belt 16 to move, and the restraining pressure belt 16 is wrapped around the needle component 3 and the outer side of the fixing component 1, as well as the patient's wrist, to achieve all-round fixation of the indwelling needle. After the wrapping is completed, the support rod 17 is engaged with the inside of the positioning plate 13. At this time, the positioning plate 13 pushes the limiting strip 18 out of the limiting groove 19, and the limiting strip 18 moves to the bottom end of the needle seat of the needle component 3 to support the needle component 3, further improving the stability of the device. Then, the infusion device cone head is connected to the tube body, and the infusion can be performed. Finally, after the infusion is completed, if it is to be retained in the human body for another infusion, some anti-coagulant should be injected into the pipeline of the through tube 2, and the through tube 2 mouths should be tightly covered with a protective cap. The protective cap can be removed for subsequent operations when the infusion is performed next time.

[0030] Although examples of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for fixing an indwelling needle, characterized in that: include: A fixing component (1), wherein the fixing component (1) is fixedly arranged on the outside of the through tube (2), and the other end of the through tube (2) is fixedly connected to the needle component (3); The fixing component (1) is located at the connection between the through tube (2) and the needle component (3), and the fixing component (1) comprises an all-round fixing component and a supporting component. The all-round fixing component comprises a restraining pressure belt (16) capable of wrapping around the patient and the indwelling needle, and the supporting component comprises a limiting strip (18) capable of supporting the bottom end of the needle component (3). After the needle component (3) is inserted into the patient's skin, the indwelling needle is fixed at the patient's infusion position by adjusting the fixing component (1), thereby achieving all-round balanced fixation of the indwelling needle.

2. The indwelling needle fixing device according to claim 1, characterized in that: The all-round fixing component also includes a cylinder (11) fixedly connected to one end of the through tube (2) and the needle component (3), respectively; a movable groove (14) is provided on the inner side of the cylinder (11); a rotating cylinder (15) is rotatably connected to the outer side of the movable groove (14); a restraining pressure belt (16) is wound around the outer side of the rotating cylinder (15); and a support rod (17) is fixedly connected to the other side of the restraining pressure belt (16).

3. The indwelling needle fixing device according to claim 2, characterized in that: The omnidirectional fixing component also includes a slot (12) formed on the outside of the cylinder (11), and a positioning plate (13) is fixedly arranged on the outside of the cylinder (11), and the positioning plate (13) is symmetrical to the slot (12).

4. The indwelling needle fixing device according to claim 3, characterized in that: Two slide grooves are symmetrically arranged inside the cylinder (11), the slide grooves are located on the sides of the movable groove (14), and a rotating cylinder (15) is rotatably connected inside the slide grooves.

5. The indwelling needle fixing device according to claim 1, characterized in that: The side of the restraining pressure belt (16) that contacts the skin is provided with wavy patterns, and the surface of the restraining pressure belt (16) is made of a flat elastic knitted material.

6. The indwelling needle fixing device according to claim 1, characterized in that: The support component comprises a limit groove (19) formed on the outside of the cylinder (11), the inner side of the limit groove (19) being snap-connected with a limit strip (18), the limit strip (18) being made of a stepped flexible material, and one end of the limit strip (18) being fixedly connected with a round rod, the round rod being embedded in the inner side of the positioning plate (13) when not in use, and being able to slide on the inner side of the positioning plate (13).

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