CN219847687U - Indwelling intravenous needle hand fixation device - Google Patents

Abstract

The utility model relates to a hand fixing device for a venous indwelling needle, which comprises a wrist supporting plate and a palm supporting plate, wherein the wrist supporting plate structure is attached to the physiological curve of the inner side of a wrist; the palm support plate structure is attached to the palm physiological curve; the palm support plate and the wrist support plate have 140-160-degree arc-shaped bending and are integrated panels; the edge of one side of the palm supporting plate is provided with a first fixing ring fixed with the thumb, and the edge of the other side of the palm supporting plate is provided with a second fixing ring fixed with the little finger; the hand-held device is good in hand fixing effect, less in constraint on the hand, and greatly improved in comfort level of the child patient; the operation on the back of the hand is not hindered; the medical care does not need to use the adhesive tape to paste the extension tube and the head, thereby saving the operation time and more importantly reducing the stimulation of the adhesive tape to the skin of the child.

Description

Indwelling intravenous needle hand fixation device

Technical field

The utility model belongs to the technical field of syringe fixing devices, and is specifically a hand fixing device for intravenous indwelling needles.

Background technique

At present, the use rate of intravenous indwelling needles is increasing, especially in pediatrics, and it has almost become a must-use infusion tool. The biggest problem with the use of intravenous indwelling needles is unplanned extubation. Foreign research results show that children under 2 years old are more likely to have unplanned extubations. Liang Xin’s research found that unplanned extubation of intravenous indwelling needles occurs in children under 5 years old. Extubation accounted for 97.8%, and the younger the children, the higher the proportion of unplanned extubation with intravenous indwelling needles.

Generally, intravenous infusion is done in the hand. In order to avoid detachment due to movement of the hand, the installation process of the intravenous indwelling needle: the medical staff needs to first insert the cannula needle into the patient's venous blood vessel, then remove the needle tip and use the needle holder and Y interface. The film is bonded to the surface of the back of the hand; then the extension tube is adjusted to the appropriate bend, and the indwelling needle connection port is fixed to the base of the palm or the elbow joint with a piece of tape. The entire operation takes about 30 seconds. Unplanned extubation not only increases patient pain and risk of infection, but also increases nurse workload. Therefore, there is a need for a device that can reduce unplanned extubation and facilitate medical care in installing intravenous indwelling needles.

There are some hand fixation devices provided in the existing technology. For example, my country's utility model patent, patent number 202021601535.1, application date 2020.08.04, discloses an arc-shaped fixed hand plate for children's intravenous indwelling needle infusion. The arc-shaped end of the wrist support plate is oriented horizontally. The outer extension forms a palm support part that supports the hand. The wrist support plate and the palm support plate are both structures that conform to the physiological curvature of the human body and are fixed to the hand through straps. This device prevents excessive movement of the hand where the intravenous catheter is installed.

There are still problems with the above solution: 1) This solution only focuses on the adaptive curve support of the palm, without optimizing the constraints on the curvature of the wrist, and cannot make the angle between the palm and the arm reach the most suitable angle for indwelling needles; 2) Multi-strap structure , especially the strap on the palm can easily hinder the placement of the needle.

Utility model content

The problems to be solved by this utility model are: 1) The hand fixation device in the prior art cannot be completely suitable for fixing the hand with the indwelling needle; 2) The installation operation process of the indwelling needle cannot be simplified.

The technical solution adopted by this utility model to solve the above problems is:

A hand fixation device for intravenous indwelling needles, including a wrist support plate and a palm support plate. The structure of the wrist support plate fits the physiological curve of the inner side of the wrist; the structure of the palm support plate fits the physiological curve of the palm; the palm support plate and The wrist support plate has an arc-shaped bend of 140 degrees to 160 degrees, and they are integrated panels; one edge of the palm support plate is provided with a first fixing ring fixed to the thumb, and the other edge is provided with a second fixing ring fixed to the little finger. The fixed ring also includes a curved support rod, the lower end of the curved support rod is connected to the palm support plate, the upper end is wound around the back of the hand, and the upper end is provided with a clip.

Compared with the prior art, the present invention adopting the above technical solution has the following beneficial effects:

1) The palm support plate is fixed with the thumb and little finger, which not only has a good fixation effect on the hand, but also has less constraints on the hand and greatly improves the comfort of the child; 2) it is only fixed on the fingers on both sides and does not hinder the movement of the back of the hand. Operation; 3) The curved support rod can fix the extension tube of the indwelling needle, so doctors and nurses do not need to tape the extension tube and head, saving operating time. The clamp fixation makes the connection port more mobile, making it easier for doctors and nurses to connect the infusion tube to the indwelling tube. needle; 4) Reduce the use of tape and reduce irritation to the children's skin.

As a preference, a further technical solution of the present invention is:

The clip is a C-shaped hook with a live mouth, and the outer end of the extension tube of the indwelling needle is pressed into the clip. This C-shaped hook is convenient for fixing the extension tube, and it is fast to fix and disassemble.

The curved support rod is a steel bar that cannot deform its original curve without strong pressure, and its lower end is plugged and fixed on the side of the palm support plate. In this solution, the steel bar can be shaped to support the extension tube, and the distance between the clip and the palm fixing plate can also be adjusted to adapt to palms of different thicknesses.

The curved support rod includes a fixed part fixedly connected to the palm support plate and an overhanging part provided with a clip; a screw is provided at the outer end of the fixed part, and the lower end of the screw is fixedly connected to a dial. The dial is embedded in the fixed part, with at least part of its circumference The circle is located outside the fixed part, and the screw rod vertically passes through the fixed part; the upper part of the screw rod is threaded into the sliding block; the end of the overhanging part away from the clip is fixedly connected to the sliding block. The curved support rod of this solution has a solid structure to prevent the clip from moving downward when under pressure, causing pressure on the back of the hand; the height of the clip can also be adjusted according to the patient's hand.

There is also a guide tail on the outside of the sliding block. The guide tail is installed in the chute, and the lower end of the chute is fixedly connected to the fixed part. This automatically limits the position of the overhang, and its height can be adjusted with one hand.

The palm support plate is provided with an arc-shaped notch corresponding to the palm area, and a spherical air bag is installed in the arc-shaped notch. The spherical air bag is provided with connecting ears on both sides, and the connecting ears are fixedly connected to the palm support plate. An inflation port is provided on the side of the spherical air bag away from the palm. This solution controls the inflation volume of the airbag according to the shape of the hand, making it suitable for more patients and improving comfort.

Description of the drawings

Figure 1 is a structural diagram of the palm side of the utility model;

Figure 2 is an improved structural diagram of the palm support plate of the present utility model;

Figure 3 is a schematic diagram of the relative angles between the palm support plate and the wrist support plate of the utility model;

Figure 4 is a structural diagram of the dorsal side of the hand of the present invention;

Figure 5 is a schematic structural diagram of a curved support rod embodiment;

Figure 6 is a schematic structural diagram of the second embodiment of the curved support rod;

In the picture: 1. Palm support plate; 2. Wrist support plate; 3. Strap; 4. First fixed ring; 5. Curved support rod; 6. Clip; 7. Dial wheel; 8. Screw; 9. Sliding block. , 10. Chute; 11. Guide tail.

Detailed ways

The present utility model will be further described below with reference to the examples. The purpose is only to better understand the contents of the present utility model. Therefore, the examples cited do not limit the scope of protection of the present utility model.

The length of the indwelling needle is longer for the blood vessels on the back of children's hands, and part of it extends to the wrist. In order to maintain smooth dripping of liquid, the wrist must be kept at about 140 degrees of palm flexion. The traditional use of tape to fix the extension tube of the indwelling needle may be because the tape is not firmly fixed or the nurse Improper operation will not achieve the effect of lifting high and level.

Referring to Figures 1 to 4, the hand fixation device for intravenous indwelling needles provided by the present utility model includes a wrist support plate 2 and a palm support plate 1. The structure of the wrist support plate 2 fits the physiological curve of the inner side of the wrist; the palm support The structure of the plate 1 fits the physiological curve of the palm; the palm support plate 1 and the wrist support plate 2 have arc bends of 140 degrees to 160 degrees, and they are integrated panels; one side edge of the palm support plate 1 is provided with a thumb-fixed The first fixed ring 4 has a second fixed ring fixed to the little finger on the other edge; it also includes a curved support rod 5, the lower end of the curved support rod 5 is connected to the palm support plate 1, the upper end is wound around the back of the hand, and the upper end is provided with Clip 6.

The wrist support plate 2 of the utility model is fixed to the arm through the strap 3, and both sides of the palm support plate 1 are fixed to the thumb and little finger. After these two fingers are supported and fixed, the entire palm can basically remain stable and flat, and the three middle fingers are Activities will not affect the indwelling needle, making the patient less constrained and more comfortable. The indwelling needle extension tube no longer needs to be fixed with adhesive. It only needs to be fixed or separated from the clip 6 by "push" or "pull", which saves the medical staff the process of tearing off the old glue and finding a new one to replace it. This is It can be particularly effective in saving time in practical operations. Because the skin of children or adult patients is relatively delicate and fragile, you usually need to be careful when removing the tape, so it takes a little longer, and the tape is covered for a long time. , Repeatedly changing the tape can cause serious damage to the skin.

At least the palm support plate 1 and the wrist support plate 2 of this utility model are made by 3D printing; together with the curved support rod 5, they can also be completed by 3D printing simultaneously.

The palm support plate 1 and the wrist support plate 2 are also provided with a number of heat dissipation holes.

The 3D printed first fixing ring 4 and the second fixing ring can be circular rings or split rings. They are preferably made of softer rubber and are secondary fixed to the palm support plate 1 by snapping or hot melting. The first fixing ring 4 and the second fixing ring can be 3D printed at the same time as the palm support plate 1, or they can be straps 3 or Velcro.

The clip 6 is a live C-shaped hook, and the outer end of the extension tube of the indwelling needle is pressed into the clip 6 . The size of the C-shaped hook should be suitable for the extension tube. When using, press the extension tube into the C-shaped hook. The C-shaped hook can clamp the extension tube. When pulling outward, the extension tube can be easily pulled out of the C-shaped hook. , the clip 6 hangs on the back of the hand, and the distance between the clip 6 and the skin on the back of the hand is generally 2mm to 5mm, which is suitable for lifting high and horizontally.

Since people have different hand shapes and palm thicknesses, the distance between the clip 6 and the palm support plate 1 should be able to adapt to different hand shapes, or changes in fat or thinness of people or short-term swelling, etc. This utility model has designed a height-adjustable structure of the clip 6. Specifically, the utility model provides two embodiments of the connection structure of the curved support rod 5 and the palm support plate 1:

Embodiment 1: Referring to Figure 5, the curved support rod 5 is a steel bar that cannot deform its original curve without strong pressure, and its lower end is plugged and fixed on the side of the palm support plate 1. In this solution, the steel bar is bent outward with great force to increase the height of the clip 6, or when the development position is relatively high, the steel bar is pressed down hard to change the bending state of the steel bar. After adjusting the position of the clip 6 in this embodiment, the height of the extension tube can be stably supported in a non-pressure state. However, when other objects press the curved support rod 5, the supporting force is slightly insufficient.

Embodiment 2: Referring to Figure 6, the curved support rod 5 includes a fixed part fixedly connected to the palm support plate 1 and an overhanging part provided with a clip 6; a screw 8 is provided at the outer end of the fixed part, and the lower end of the screw 8 is fixedly connected to the dial 7 , the dial wheel 7 is embedded in the fixed part, at least part of its circumference is located outside the fixed part, the screw rod 8 vertically penetrates the fixed part; the upper part of the screw rod 8 is threaded into the sliding block 9; the overhanging part is away from the end of the clip 6 Fixed with sliding block 9. In this solution, both the fixed part and the overhanging part themselves adopt a structure with relatively high hardness, and the height of the overhanging part is controlled by the height adjustment screw 8, thereby adjusting the distance between the clip 6 and the skin. When adjusting specifically, hold the overhanging part with one hand and turn the dial 7 with the other hand. The axial rotation of the screw 8 is converted into the linear motion of the sliding block 9.

In this embodiment, the hole on the fixed part for the screw rod 8 to pass through is a through hole with a diameter slightly larger than the screw rod 8, and the screw rod 8 in the through hole is made into a non-threaded flat rod. The length of the section of the screw 8 protruding from the fixed part is the adjustment range of the height of the clip 6, and can be designed as needed. In this solution, the dial wheel 7 is designed to be radially inserted into the fixed part, and the lower side can support the dial wheel 7 to prevent the screw rod 8 from moving downward.

Furthermore, a guide tail 11 is also provided on the outside of the sliding block 9. The guide tail 11 is installed in the chute 10, and the lower end of the chute 10 is fixedly connected to the fixed part. This solution enables one-hand adjustment of the height of the overhang. The chute 10 restricts the sliding block 9 from rotating with the screw 8. When the screw 8 rotates, the sliding block 9 and the guide tail 11 move up and down along the chute 10. This chute 10 constrains the guide tail 11 to only move up and down. The chute 10 is not limited to the structure shown in Figure 6. It can also be replaced by other guide grooves and guide rods that can achieve the above functions; it can also be replaced and placed on the overhang. Slotting on the upper part, fixing the guide rod on the fixed part, and other similar guide structures are all under the concept of the present utility model.

Preferably, as shown in Figure 2, the palm support plate 1 is provided with an arc-shaped notch corresponding to the palm area, and a spherical air bag is installed in the arc-shaped notch. The spherical air bag is provided with connecting ears on both sides, and the connecting ears are fixedly connected to the palm support plate 1. The spherical air bag There is an inflation port on the side away from the palm of the hand. This solution controls the inflation volume of the airbag according to the shape of the hand, making it suitable for more patients and improving comfort.

The support and fixation structure of this utility model conforms to the physiological curve of the human hand, and the equipment fits the curvature of the hand. It uses finger fixation instead of the existing technology of binding and fixing the whole hand, which has high comfort; it is conducive to U-shaped fixation and the elevation of the tail end of the trocar. Fixed; reduces tape wrapping and skin damage; 3D printing technology is used for rapid prototyping, which can be personalized according to the child's hand shape, or different models can be prefabricated. The height of the clip 6 is adjustable, which can adapt to various hand shapes or hand changes ( fat and thin changes, skin swelling), better adaptability, high matching degree to various hand shapes, low cost; the design shape is childlike and highly acceptable to children; 3D printing integrated molding design, the device structure is stable and not easy to be damaged, 3D The printing uses resin material, which is slightly elastic and has sufficient support without causing pressure damage to the skin. It saves a piece of tape to stick to the outer end of the extension tube and saves medical consumables.

The above descriptions are only preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present utility model. All equivalent changes made by using the description of the present utility model and the contents of the drawings are included in the scope of the present utility model. within the scope of rights.

Claims (6)

1. A hand fixation device for intravenous indwelling needles, including a wrist support plate (2) and a palm support plate (1). The structure of the wrist support plate (2) fits the physiological curve of the inner wrist; the palm support plate (1) 1) The structure fits the physiological curve of the palm; it is characterized in that: the palm support plate (1) and the wrist support plate (2) have arc bends of 140 degrees to 160 degrees, and they are integrated panels; the palm support plate (1) One side edge is provided with a first fixing ring (4) fixed to the thumb, and the other side edge is provided with a second fixing ring fixed to the little finger; It also includes a curved support rod (5), the lower end of the curved support rod (5) is connected to the palm support plate (1), the upper end is wound around the back of the hand, and the upper end is provided with a clip (6). 2. The intravenous indwelling needle hand fixation device according to claim 1, characterized in that the clamp (6) is a live C-shaped hook, and the outer end of the extension tube of the indwelling needle is pressed into the clamp (6). 3. The intravenous indwelling needle hand fixation device according to claim 1, characterized in that: the curved support rod (5) is a steel bar that cannot deform its original curve without strong force, and its lower end is plugged and fixed on the palm of the hand. Support plate (1) side. 4. The intravenous indwelling needle hand fixation device according to claim 1, characterized in that: the curved support rod (5) includes a fixed part fixedly connected to the palm support plate (1) and an overhanging part provided with a clip (6) ; A screw (8) is provided at the outer end of the fixed part, and the lower end of the screw (8) is fixedly connected to the thumbwheel (7). The thumbwheel (7) is embedded in the fixed part, and at least part of its circumference is located outside the fixed part. The screw (8) ) penetrates the fixed part vertically; the upper part of the screw rod (8) is threaded into the sliding block (9); the end of the overhanging part away from the clip (6) is fixedly connected to the sliding block (9). 5. The intravenous indwelling needle hand fixation device according to claim 4, characterized in that: a guide tail (11) is also provided on the outside of the sliding block (9), and the guide tail (11) is installed in the chute (10). The lower end of the groove (10) is fixedly connected to the fixed part. 6. The intravenous indwelling needle hand fixation device according to claim 1, characterized in that: the palm support plate (1) is provided with an arc-shaped notch corresponding to the palm area, and a spherical air bag is installed in the arc-shaped notch, and there are two spherical air bags on both sides of the spherical air bag. The connecting ear is fixedly connected to the palm support plate (1), and the side of the spherical airbag away from the palm is provided with an inflation port.