Venous indwelling needle fixing device

Abstract

The utility model relates to the related technical field of venous indwelling needle fixation, in particular to a venous indwelling needle fixing device which comprises an arc-shaped placement plate with an arc surface close to the radian of an arm at the bottom, and a placement table is arranged on the top surface of the arc-shaped placement plate. A clamping assembly used for fixing a retention needle connector pipe is arranged on one side of the top face of the placement table. The retention needle has the advantages that the conduit at the rear end of the retention needle is placed in the conduit groove, and the situation that the conduit is blocked due to the fact that the conduit is bent by a large angle is avoided; the joint tube at the rear end of the retention needle is synchronously clamped and fixed through the two arc-shaped clamping plates, so that the situation that the joint tube is fixed through an adhesive tape traditionally is avoided, and the situation that the joint tube needs to be fixed again due to fixation looseness after a patient sweats is synchronously avoided; and the puncturing position of the retention needle is synchronously protected and blocked through the protection assembly linked with the retention needle and the convex arc-shaped protection plate.

Description

Technical Field

[0001] The utility model relates to the technical field related to the fixation of a venous indwelling needle, and in particular to a fixing device for a venous indwelling needle. Background Art

[0002] The core components of an intravenous catheter, also known as an intravenous cannula, include a soft catheter / cannula that can be placed in a blood vessel, and a stainless steel puncture guide needle core. When in use, the catheter and the needle core are inserted into the blood vessel together. When the catheter is fully inserted into the blood vessel, the needle core is withdrawn, and only the soft catheter is placed in the blood vessel for infusion therapy; protecting the patient's blood vessels, alleviating the patient's pain, making the patient feel comfortable, and improving patient satisfaction and nursing quality. There are many different structural products to choose from, with catheters of different lengths to choose from, which can improve the work efficiency of nurses, use drugs rationally, avoid multiple intermittent infusions per day, reduce punctures and missed medications, avoid drug reactions, reduce costs, and reduce the cost of exudation treatment caused by scalp needle puncture;

[0003] After the retention needle is inserted into the patient's blood vessel, a dressing is mostly used to fix the needle tip of the retention needle. However, the connector tube at the rear end of the retention needle is often directly attached to the patient's arm with medical tape. When the patient needs an infusion, the medical tape needs to be torn off again to take out the connector tube for connection, which is inconvenient. Simultaneously, when the patient sweats too much, the tape easily loses its stickiness, thereby affecting the fixation of the connector tube. The connector tube needs to be re-fixed, which is inconvenient. Utility Model Content

[0004] The utility model aims to provide a venous indwelling needle fixing device in view of the defects and shortcomings of the prior art.

[0005] The utility model discloses a device for fixing a venous indwelling needle, which comprises an arc-shaped placement plate with an arc surface close to the curvature of an arm at the bottom, a placement platform is arranged at the top surface of the arc-shaped placement plate, and a clamping component for fixing a retention needle joint tube is arranged on one side of the top surface of the placement platform; a second arc-shaped placement groove is arranged at the end surface of one end of the placement platform, and a protective component for protecting the insertion position of the retention needle is arranged in the second arc-shaped placement groove.

[0006] Furthermore, a sponge cushion layer is provided at the curved surface at the bottom of the curved placement plate, and strap buckles for clamping the straps are symmetrically provided on both sides of the curved placement plate.

[0007] Furthermore, a first arc-shaped placement groove with arc-shaped two sides is provided on the top surface of the arc-shaped placement plate, a wire tube groove extending outward for placing retained needle and thread tubes is provided in the middle of one end of the first arc-shaped placement groove, a guide slide groove arranged along its length direction is provided at the bottom of the first arc-shaped placement groove, and a stop plate arranged along its width direction is provided in the middle of the guide slide groove.

[0008] Furthermore, the clamping assembly includes an arc-shaped clamping plate which is mirror-mounted in the first arc-shaped mounting groove and slidably connected to it, and the outer arc surface of the arc-shaped clamping plate can fit the arc surface of the first arc-shaped mounting groove; a driving plate which is slidably connected to the guide groove is provided at the bottom of the arc-shaped clamping plate, and the two driving plates are respectively located on both sides of the stop plate.

[0009] Furthermore, a transmission shaft arranged along its length direction is provided in the guide slide groove, and the transmission shaft is rotatably connected to the placement table. A first threaded shaft section and a second threaded shaft section are provided on the shaft section of the transmission shaft located in the guide slide groove, and the first threaded shaft section and the second threaded shaft section are respectively located on both sides of the stop plate, and the first threaded shaft section and the second threaded shaft section have opposite thread rotation directions, and the first threaded shaft section and the second threaded shaft section are respectively threadedly connected to the two drive plates; one end of the transmission shaft extends to a transmission cavity opened in the placement table, in which two first bevel gears concentric therewith are installed in sequence, and the position of the transmission cavity corresponds to the position of the second arc-shaped placement groove; one end of the transmission shaft extends out of the placement table and is installed with a screw cap.

[0010] Furthermore, the protection component includes an arc-shaped protection plate placed in the second arc-shaped placement groove and slidably connected to it, and an arc surface is provided on the bottom surface of the arc-shaped protection plate; two sliding cavities arranged in a mirror image are provided in the arc-shaped protection plate, and a limit ring slidably connected to it is provided in the sliding cavity, and a screw shaft concentric with it is provided at one end of the limit ring, and one end of the screw shaft extends out of the arc-shaped protection plate to a transmission cavity provided in the placement platform, and a second bevel gear concentric with it is installed in the transmission cavity, and the two second bevel gears are respectively meshed with the two first bevel gears for transmission; the screw shaft is threadedly connected to the arc-shaped protection plate, and the screw shaft is rotationally connected to the placement platform.

[0011] After adopting the above structure, the beneficial effects of the utility model are as follows: it adopts a wire tube groove to place the catheter at the rear end of the retention needle, avoiding the situation where the catheter is blocked due to a large bending angle; the connector tube at the rear end of the retention needle is clamped and fixed by two arc-shaped clamping plates at the same time, avoiding the traditional fixation by tape, and simultaneously avoiding the situation where the fixation becomes loose after the patient sweats and needs to be re-fixed; synchronously, the protective component linked to it protects and blocks the insertion position of the retention needle through the outwardly convex arc-shaped protective plate, thereby avoiding the situation where the patient experiences pain and other discomfort due to the direct action of external force on the insertion point of the retention needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 The utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0015] Figure 3 It is a schematic diagram of the overall partial cross-sectional structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the arc-shaped protective plate in the utility model;

[0017] Description of reference numerals:

[0018] Arc-shaped placement plate-1; sponge cushion layer-2; strap buckle-3; placement platform-4; first arc-shaped placement groove-5; guide slide groove-6; wire tube groove-7; transmission cavity-8; arc-shaped clamping plate-9; drive plate-10; transmission shaft-11; screw cap-12; first threaded shaft section-13; second threaded shaft section-14; stop plate-15; first bevel gear-16; second bevel gear-17; screw shaft-18; limit ring-19; second arc-shaped placement groove-20; arc-shaped protective plate-21; sliding cavity-22. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1-Figure 4As shown, the utility model discloses a venous indwelling needle fixing device, which comprises an arc-shaped placement plate 1 with an arc surface close to the curvature of an arm at the bottom, a placement platform 4 is arranged on the top surface of the arc-shaped placement plate 1, and a clamping component for fixing the retention needle connector tube is arranged on one side of the top surface of the placement platform 4; a second arc-shaped placement groove 20 is arranged on the end surface of one end of the placement platform 4, and a protective component for protecting the insertion position of the retention needle is arranged in the second arc-shaped placement groove 20.

[0022] Furthermore, a sponge cushion layer 2 is provided at the curved surface at the bottom of the curved placement plate 1, and strap buckles 3 for clamping straps are symmetrically provided on both sides of the curved placement plate 1.

[0023] Furthermore, a first arc-shaped placement groove 5 with arc-shaped two sides is provided on the top surface of the arc-shaped placement plate 1, a wire tube groove 7 for placing retained needle and thread tubes is provided in the middle of one end of the first arc-shaped placement groove 5, and a guide groove 6 arranged along its length direction is provided at the bottom of the first arc-shaped placement groove 5, and a stop plate 15 arranged along its width direction is provided in the middle of the guide groove 6.

[0024] Furthermore, the clamping assembly includes an arc-shaped clamping plate 9 which is mirror-mounted in the first arc-shaped mounting groove 5 and is slidably connected to it. The outer arc surface of the arc-shaped clamping plate 9 can fit the arc surface of the first arc-shaped mounting groove 5; a driving plate 10 which is slidably connected to the guide groove 6 is provided at the bottom of the arc-shaped clamping plate 9, and the two driving plates 10 are respectively located on both sides of the stop plate 15.

[0025] Furthermore, a transmission shaft 11 is arranged along its length direction in the guide groove 6, and the transmission shaft 11 is rotatably connected to the placement table 4. A first threaded shaft section 13 and a second threaded shaft section 14 are provided on the shaft section of the transmission shaft 11 located in the guide groove 6. The first threaded shaft section 13 and the second threaded shaft section 14 are respectively located on both sides of the stop plate 15, and the first threaded shaft section 13 and the second threaded shaft section 14 have opposite thread rotation directions. The first threaded shaft section 13 and the second threaded shaft section 14 are respectively threadedly connected to the two drive plates 10; one end of the transmission shaft 11 extends to the transmission cavity 8 opened in the placement table 4, and two first bevel gears 16 concentric therewith are installed in sequence. The position of the transmission cavity 8 corresponds to the position of the second arc-shaped placement groove 20; one end of the transmission shaft 11 extends out of the placement table 4 and is installed with a screw cap 12.

[0026] Furthermore, the protection component includes an arc-shaped protection plate 21 which is placed in the second arc-shaped placement groove 20 and is slidably connected to it, and the bottom surface of the arc-shaped protection plate 21 is provided with an arc surface; two sliding cavities 22 arranged in a mirror image are provided in the arc-shaped protection plate 21, and a limit ring 19 which is slidably connected to it is provided in the sliding cavity 22, and a screw shaft 18 concentric with it is provided at one end of the limit ring 19, and one end of the screw shaft 18 extends out of the arc-shaped protection plate 21 to the transmission cavity 8 opened in the placement table 4, and a second bevel gear 17 concentric with it is installed, and the two second bevel gears 17 are respectively meshed with the two first bevel gears 16 for transmission; the screw shaft 18 is threadedly screwed to the arc-shaped protection plate 21, and the screw shaft 18 is rotationally connected to the placement table 4.

[0027] The following is a further description of the method and principle of using the technical solution in this specific implementation method in conjunction with the accompanying drawings:

[0028] When the retention needle needs to be fixed, the medical staff first fixes the entire device on the side of the retention needle insertion point on the patient's arm through the strap buckled on the strap buckle 3; synchronously make the position of the second arc-shaped placement groove 20 correspond to the position of the retention needle insertion point; synchronously, the medical staff places the catheter at the end of the retention needle in the wire tube groove 7, and synchronously places the connector tube at the rear end of the retention needle in the first arc-shaped placement groove 5. At this time, the medical staff rotates the rotary cap 12, and the rotation of the rotary cap 12 drives the transmission shaft 11 connected to it to rotate. The rotation of the transmission shaft 11 drives the two first threaded shaft sections 13 and the second threaded shaft sections 14 on its shaft body to rotate synchronously, thereby driving the two drive plates 10 and the arc-shaped clamping plates 9 on the top of the two drive plates 10 and the arc-shaped clamping plates 9 that are screwed together with the two drive plates 10 to move toward each other, thereby completing the clamping and fixing of the corresponding connector tube parts;

[0029] The synchronous rotation of the transmission shaft 11 drives the first bevel gear 16 concentric therewith to rotate, the rotation of the first bevel gear 16 drives the second bevel gear 17 meshing therewith to rotate, the rotation of the second bevel gear 17 drives the screw shaft 18 concentric therewith to rotate, the rotation of the screw shaft 18 drives the arc-shaped protective plate 21 threadedly engaged therewith to move outward along the second arc-shaped placement groove 20 to thereby perform a shielding and protection operation on the insertion position of the retention needle.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A venous indwelling needle fixing device, characterized in that: It comprises an arc-shaped placement plate (1) with an arc surface similar to the arc of an arm at the bottom, a placement platform (4) provided at the top surface of the arc-shaped placement plate (1), and a clamping component for fixing a retention needle joint tube provided on one side of the top surface of the placement platform (4); a second arc-shaped placement groove (20) is provided at one end surface of the placement platform (4), and a protection component for protecting the insertion position of the retention needle is provided in the second arc-shaped placement groove (20).

2. A venous indwelling needle fixing device according to claim 1, characterized in that: A sponge cushion layer (2) is provided on the curved surface at the bottom of the curved placement plate (1), and strap buckles (3) for clamping straps are symmetrically provided on both sides of the curved placement plate (1).

3. A venous indwelling needle fixing device according to claim 2, characterized in that: The arc-shaped placement plate (1) is provided with a first arc-shaped placement groove (5) with arc-shaped sides at the top surface, a thread tube groove (7) for placing a retained needle and thread tube and extending outward is provided in the middle of one end of the first arc-shaped placement groove (5), a guide slide groove (6) arranged along the length direction of the first arc-shaped placement groove (5) is provided at the bottom, and a stop plate (15) arranged along the width direction of the first arc-shaped placement groove (6) is provided in the middle of the guide slide groove (6).

4. A venous indwelling needle fixing device according to claim 3, characterized in that: The clamping assembly comprises an arc-shaped clamping plate (9) mirror-mounted in the first arc-shaped placement groove (5) and slidably connected therewith, and the outer arc surface of the arc-shaped clamping plate (9) can fit the arc surface of the first arc-shaped placement groove (5); a driving plate (10) slidably connected to the guide groove (6) is arranged at the bottom of the arc-shaped clamping plate (9), and the two driving plates (10) are respectively located on both sides of the stop plate (15).

5. A venous indwelling needle fixing device according to claim 4, characterized in that: The guide slot (6) is provided with a transmission shaft (11) arranged along its length direction. The transmission shaft (11) is rotatably connected with the placement platform (4). The shaft section of the transmission shaft (11) located in the guide slot (6) is provided with a first threaded shaft section (13) and a second threaded shaft section (14). The first threaded shaft section (13) and the second threaded shaft section (14) are respectively located on both sides of the stop plate (15). The first threaded shaft section (13) and the second threaded shaft section (14) have opposite thread rotation directions. The first threaded shaft section (13) and the second threaded shaft section (14) are respectively threadedly connected with the two drive plates (10). One end of the transmission shaft (11) extends to a transmission cavity (8) opened in the placement platform (4), and two first bevel gears (16) concentric therewith are sequentially installed therein. The position of the transmission cavity (8) corresponds to the position of the second arc-shaped placement slot (20). One end of the transmission shaft (11) extends out of the placement platform (4) and is installed with a screw cap (12).

6. A venous indwelling needle fixing device according to claim 5, characterized in that: The protection component comprises an arc-shaped protection plate (21) which is arranged in the second arc-shaped placement groove (20) and is slidably connected to the second arc-shaped placement groove (20), and the bottom surface of the arc-shaped protection plate (21) is provided with an arc surface; two sliding cavities (22) arranged in a mirror image are provided in the arc-shaped protection plate (21), and a limit ring (19) which is slidably connected to the second arc-shaped placement groove (20) is provided in the sliding cavity (22), and a screw shaft (18) which is concentric with the second arc-shaped protection plate (21) is provided at one end of the limit ring (19), and one end of the screw shaft (18) extends out of the arc-shaped protection plate (21) to a transmission cavity (8) provided in the placement platform (4), and a second bevel gear (17) which is concentric with the second arc-shaped protection plate (21) is installed in the transmission cavity (8) provided in the placement platform (4), and the two second bevel gears (17) are respectively meshed with the two first bevel gears (16) for transmission; the screw shaft (18) is threadedly connected to the arc-shaped protection plate (21), and the screw shaft (18) is rotationally connected to the placement platform (4).

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