Auxiliary fixing device for positioning tip of newborn PICC (Peripherally Inserted Central Catheter)

Abstract

The utility model relates to the technical field of medical auxiliary devices, and discloses a fixing auxiliary device for positioning the tip of a newborn PICC (Peripherally Inserted Central Catheter), a fixing headrest is adhered and fixed on a body position fixing pad, a pair of headrest adjusting ropes is movably mounted on the lower surface of the fixing headrest, and fixing sleeve magic tape surfaces A are arranged at two free ends of the upper surface of the fixing headrest; a restraint jacket is fixedly adhered to the position, below the fixed headrest, of the body position fixing pad, the restraint jacket comprises two restraint fixing sleeves, and fixing sleeve hook-and-loop fastener surfaces B which are adhered and matched with the fixing sleeve hook-and-loop fastener surfaces A are arranged at cuffs of the restraint fixing sleeves; a lower limb fixing pad is adhered and fixed on the position fixing pad below the restraint jacket, a lower limb fixing shell bracket is fixed on the upper surface of the lower limb fixing pad, a lower limb fixing shell is embedded in the lower limb fixing shell bracket, and the included angle between the upper section and the lower section of the lower limb fixing shell is 90 degrees; an angle of 45 degrees is formed between the upper section of the lower limb fixing shell and the edge of the lower limb fixing pad, and a flexible buffer layer is padded in the lower limb fixing shell.

Description

Technical Field

[0001] The utility model relates to the field of medical auxiliary devices, in particular to the technical field of neonatal PICC catheter insertion, and specifically is a fixing auxiliary device for positioning the tip of a neonatal PICC catheter. Background Art

[0002] A peripherally inserted central catheter (PICC) is a technique in which the tip of a peripherally inserted central catheter is positioned in a central vein. It has the advantages of long retention time, avoiding frequent punctures, and reducing the damage of irritating drugs to blood vessels. It is now widely used in neonatal intensive care units (NICU).

[0003] A study of 3454 PICCs found that 10 of them had pleural effusion and 5 had pericardial effusion. Pleural effusion was related to the PICC catheter tip being farther away from the heart (T2), while pericardial effusion was related to the PICC catheter tip being closer to the heart (T6.2 through the upper limbs and T5.5 through the lower limbs). Therefore, a PICC catheter tip that is too deep or too shallow can cause adverse complications. Whether the PICC catheter tip is ideal is particularly important for the safety of indwelling catheters. The "Guidelines for the Operation and Management of Peripherally Inserted Central Catheters in Neonates (2021)" recommends that when inserting a catheter through a lower limb vein, the PICC tip must be in the inferior vena cava, and when inserting a catheter through a head or upper limb vein, the PICC tip must be in the superior vena cava.

[0004] The INS "Standards for Intravenous Therapy Practice (2016 Edition)" and the NANN "PICC Clinical Practice Guidelines (Third Edition)" propose that changes in body position, such as arm movement and changes in body position, will affect the position and depth of the catheter tip. Taking the lower extremity great saphenous vein catheterization as an example, if the catheter is exposed unchanged, the position of the catheter tip will become shallower if the leg is overextended, and the catheter tip will be too deep if the leg is overflexed. Therefore, this requires that the newborn should adopt an appropriate and fixed position every time the PICC catheter tip is positioned. Existing studies recommend that the appropriate position for positioning the PICC catheter tip in newborns is: upper limb adduction, lower limb abduction at 45° to the center line of the trunk, and the limbs are naturally flexed.

[0005] Chest X-ray positioning, ultrasound positioning, and intracavitary electrocardiogram positioning are commonly used clinical PICC catheter tip positioning techniques. Currently, chest X-ray positioning is still the gold standard for catheter tip positioning. Newborns cannot actively cooperate, so how to maintain an ideal and consistent position during X-ray filming has become a problem that we urgently need to solve in clinical practice. Summary of the invention

[0006] In order to solve the problem that the suitable body position for positioning the tip of a neonatal PICC catheter in the prior art is that the upper limbs are adducted, the lower limbs are abducted and the angle with the center line of the trunk is 45 degrees, and the limbs are naturally flexed, but the neonates cannot actively cooperate to maintain the ideal and same body position during X-ray filming, the utility model provides a fixing auxiliary device for positioning the tip of a neonatal PICC catheter.

[0007] The utility model is implemented by the following technical solutions:

[0008] A fixing auxiliary device for positioning the tip of a neonatal PICC catheter comprises a body position fixing pad, a fixed headrest is adhesively fixed to the body position fixing pad, a pair of headrest adjustment ropes are movably mounted on the lower surface of the fixed headrest, and two free ends of the upper surface of the fixed headrest are provided with a fixing sleeve Velcro A surface; a restraining top is adhesively fixed to the body position fixing pad below the fixed headrest, the restraining top comprises two restraining fixing sleeves, and the cuffs of the restraining fixing sleeves are provided with a fixing sleeve Velcro B surface adhesively matched with the fixing sleeve Velcro A surface; a lower limb fixing pad is adhesively fixed to the body position fixing pad below the restraining top, a lower limb fixing shell bracket is fixed to the upper surface of the lower limb fixing pad, a lower limb fixing shell bracket is embedded in the lower limb fixing shell bracket, an angle between an upper section and a lower section of the lower limb fixing shell is 90 degrees, the upper section of the lower limb fixing shell forms a 45 degree angle with the edge of the lower limb fixing pad, and a flexible buffer layer is padded in the lower limb fixing shell.

[0009] During implementation, the utility model is designed to provide a fixation auxiliary device for positioning the tip of a neonatal PICC catheter, comprising a body position fixation pad, the upper surface of which is provided with a positioning line for assisting in determining the fixation angle of the neonatal lower limbs, the positioning line comprising a longitudinal positioning line and a 45° positioning line, the 45° positioning line being located in the lower half of the body position fixation pad and being used to determine whether the abduction of the lower limbs is at 45° to the center line of the trunk.

[0010] A fixed headrest is adhesively fixed to the body position fixing pad. The surface material of the fixed headrest is soft and skin-friendly. The middle part of the fixed headrest is adhesively fixed to the body position fixing pad, that is, a Velcro B surface of the headrest that matches the body position fixing pad is provided in the middle of the lower surface of the fixed headrest, which matches with the Velcro A surface of the headrest located on the body position fixing pad, so as to facilitate the removal and cleaning of the fixed headrest. At the same time, the adhesive fixation in the middle part facilitates the expansion size and position adjustment of the fixed headrest. A pair of headrest adjustment ropes are movably installed on the lower surface of the fixed headrest, which are used to adjust the expansion size of the two ends of the fixed headrest. The headrest adjustment ropes are made of flat flexible material. The fixed headrest is made of a material and is suitable for newborns of different head sizes. Specifically, positioning rope loops are provided at both ends of the lower surface of the fixed headrest, and two pairs of positioning rope loops are provided at corresponding positions on each side of the fixed headrest to ensure the installation position of the headrest adjustment rope. A pair of headrest adjustment ropes arranged oppositely are sleeved in the positioning rope loops, and the handle ends of the two headrest adjustment ropes are respectively located on the outside of the fixed headrest, and the fixed ends of the headrest adjustment ropes are buckled on the lower surface of the fixed headrest through the adjustment rope fixing buckles; the two free ends of the upper surface of the fixed headrest are provided with fixed sleeve Velcro A surfaces, which are used to cooperate with the restraint top to fix the restraint fixed sleeves.

[0011] A restraint top is adhered and fixed on the position fixation pad below the fixed headrest. The material of the restraint top is soft and skin-friendly. A Velcro is provided on the back of the restraint top, which is adhered to the position fixation pad through the Velcro. The edge of the front placket on one side of the restraint top is connected to the outside of the other side through the Velcro to wrap the newborn. Other commonly used fastening methods for newborn clothes, such as laces, can also be used; the restraint top includes two restraint sleeves. The sleeve length of the restraint sleeve is longer than that of ordinary newborn tops. The hands of the newborn cannot extend from the cuffs. The cuffs of the restraint sleeves are provided with The Velcro B side of the fixed sleeve is adhered and cooperated with the Velcro A side of the fixed sleeve, and the Velcro A side of the fixed sleeve and the Velcro B side of the fixed sleeve are adducted and fixed, so the upper limbs can be adducted and fixed, that is, both arms are located in front of the chest, the Velcro A side of the fixed sleeve on the left side is adhered and cooperated with the Velcro B side of the fixed sleeve on the right side, and the Velcro A side of the fixed sleeve on the right side is adhered and cooperated with the Velcro B side of the fixed sleeve on the left side. The arms of the newborn are constrained by the constrained fixed sleeves to form an adducted state, and the restraint method is gentle. While ensuring the natural position of both upper limbs, the discomfort caused to the newborn due to the restraint is reduced.

[0012] A lower limb fixation pad is adhered and fixed to the body position fixation pad under the restraint top, that is, the lower limb fixation pad is adhered to the body position fixation pad by Velcro, and scale lines are provided on the edge of the lower limb fixation pad. The scale lines are aligned with the positioning lines on the body position fixation pad to determine that the lower limb fixation pad is not tilted and pasted, thereby ensuring the angle of lower limb fixation; a lower limb fixation shell bracket is fixed to the upper surface of the lower limb fixation pad, and the bottom surface of the lower limb fixation shell bracket is fixed to the lower limb fixation pad, and the top surface is in a concave state, supporting the lower limb fixation shell, ensuring the stable installation of the lower limb fixation shell, and the lower The limb fixation shell bracket is embedded with the lower limb fixation shell to prevent the lower limb fixation shell from shaking or tilting. The lower limb fixation shell is made of an elastic shell, that is, the upper edge of the opening of the lower limb fixation shell can be deformed to expand the opening. The angle between the upper and lower sections of the lower limb fixation shell is 90°, and the upper section of the lower limb fixation shell is 45° to the edge of the lower limb fixation pad. The lower limb fixation shell is padded with a flexible buffer layer, and the edge of the flexible buffer layer is turned outward to wrap the edge of the lower limb fixation shell. The material of the flexible buffer layer is soft and skin-friendly to avoid neonatal injury.

[0013] When in use, pull the headrest adjustment rope according to the size of the newborn's head. The fixed end of the headrest adjustment rope pulls the two ends of the fixed headrest closer to the middle. The friction between the positioning rope loop and the headrest adjustment rope ensures that the two ends of the fixed headrest are fixed. Fit the lower limb fixation pad on the body position fixation pad according to the size of the newborn. During the fitting process, align the scale line with the longitudinal positioning line to ensure that the distance between the lower limb fixation pads on both sides and the central axis is equal, ensure that the edges of the lower limb fixation pad and the body position fixation pad are parallel and the distance is equal, and the upper edge of the lower limb fixation shell is parallel to the 45° positioning line to ensure that the lower limb abduction is 45° with the center line of the trunk. The installation of the fixation auxiliary device is completed.

[0014] Place the newborn on the position fixation cushion with the head in the middle of the fixed headrest. Pull the headrest adjustment rope again to adjust the position of both sides of the fixed headrest according to the size of the head to keep the newborn's head in the central supine position; place both upper limbs into the restraint fixation sleeves respectively, put both arms in the adducted position, and then fit the Velcro A side of the fixation sleeves onto the Velcro B side of the fixation sleeves to keep both upper limbs in the adducted position; open the two edges of the lower limb fixation shell with one hand to expand the opening of the lower limb fixation shell, and place both lower limbs of the newborn into the lower limb fixation shells respectively. Release the hands that open the edges, and the two edges of the lower limb fixation shells will automatically retract to fix the lower limbs, and keep the lower limbs in the abducted state at 45° to the center line of the trunk.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a fixing auxiliary device for positioning the tip of a neonatal PICC catheter, which can constrain the position of the neonatal head and limbs through a position-adjustable fixing device, and can constrain and fix the limbs of the neonatal puncture site during X-ray filming, so that the neonatal can maintain consistency in an appropriate position, thereby improving the accuracy and continuity of the positioning of the tip of the PICC catheter, and making the results more comparable when tracking the position change of the tip of the PICC catheter, thereby avoiding the misjudgment of the medical staff due to inaccurate positioning of the catheter tip caused by improper body position. At the same time, the device reduces the problem of radiation exposure caused by repeated filming due to the waving of the limbs of the neonate during the filming process, and saves the medical staff time wasted due to repeated filming, thereby reducing the workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram showing the overall structure of the device when it is in use.

[0017] Figure 2 A schematic diagram showing the reverse structure of a fixed headrest.

[0018] Figure 3 A schematic diagram showing the structure of a lower limb fixation device.

[0019] Figure 4 A cross-sectional view showing a lower limb fixation device.

[0020] Figure 5 A schematic diagram showing the structure of a body positioning pad.

[0021] In the figure: 1-body position fixing pad, 2-fixed headrest, 3-headrest adjustment rope, 4-restraint top, 5-restraint fixing sleeve, 6-fixed sleeve Velcro B side, 7-fixed sleeve Velcro A side, 8-lower limb fixing shell, 9-lower limb fixing shell bracket, 10-lower limb fixing pad, 11-adjustment rope fixing buckle, 12-positioning rope loop, 13-positioning line, 14-flexible buffer layer, 15-headrest Velcro B side. DETAILED DESCRIPTION

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0023] A fixation auxiliary device for positioning the tip of a neonatal PICC catheter, such as Figures 1 to 5As shown: it includes a body position fixing pad 1, and a positioning line 13 is provided on the upper surface of the body position fixing pad 1, which is used to assist in determining the fixing angle of the lower limbs of the newborn. The positioning line 13 includes a longitudinal positioning line and a 45° positioning line. In this embodiment, 6 longitudinal positioning lines are drawn on the body position fixing pad 1, and the longitudinal positioning lines on the left and right sides of the central axis are symmetrical, which are used to determine that the distances between the two lower limb fixing pads 10 and the central axis are equal. The 45° positioning line is located in the lower half of the body position fixing pad 1, which is used to determine that the lower limb abduction is 45° with the center line of the trunk.

[0024] A fixed headrest 2 is adhesively fixed to the body position fixing pad 1. The surface material of the fixed headrest 2 is soft and skin-friendly. The middle part of the fixed headrest 2 is adhesively fixed to the body position fixing pad 1. The fixed headrest 2 is located on the central axis of the body position fixing pad 1, that is, a headrest Velcro B surface 15 that matches the body position fixing pad 1 is provided in the middle of the lower surface of the fixed headrest 2, which is convenient for disassembly and cleaning of the fixed headrest 2. At the same time, the adhesive fixation in the middle part facilitates the expansion size and position adjustment of the fixed headrest 2. A pair of headrest adjustment ropes 3 are movably installed on the lower surface of the fixed headrest 2, which are used to adjust the expansion size of the two ends of the fixed headrest 2. The headrest adjustment ropes 3 are made of flat flexible material. , suitable for newborns of different head sizes. Specifically, positioning rope loops 12 are provided at both ends of the lower surface of the fixed headrest 2, and two pairs of positioning rope loops 12 are provided at corresponding positions on each side of the fixed headrest 2 to ensure the installation position of the headrest adjustment rope 3. A pair of headrest adjustment ropes 3 arranged oppositely are sleeved in the positioning rope loops 12, and the handle ends of the two headrest adjustment ropes 3 are respectively located on the outside of the fixed headrest 2, and the fixed ends of the headrest adjustment ropes 3 are buckled on the lower surface of the fixed headrest 2 through the adjustment rope fixing buckles 11; fixed sleeve Velcro A surfaces 7 are provided on both free ends of the upper surface of the fixed headrest 2, which are used to cooperate with the restraint top 4 to fix the restraint fixed sleeve 5.

[0025] A restraining top 4 is adhesively fixed to the position fixing pad 1 below the fixed headrest 2. The restraining top 4 is made of soft and skin-friendly material. The edge of the front placket on one side of the restraining top 4 is connected to the outer side of the other side by Velcro, which is used to wrap the newborn. The restraining top 4 includes two restraining fixing sleeves 5. The sleeve length of the restraining fixing sleeves 5 is greater than the sleeve length of ordinary newborn tops, and the hands of the newborn cannot extend from the cuffs. The cuffs of the restraining fixing sleeves 5 are provided with a fixing sleeve Velcro B surface 6 that is adhesively matched with the fixing sleeve Velcro A surface 7. The fixing sleeve Velcro A surface 7 and the fixing sleeve Velcro B surface 6 are adducted and fixed inwardly. The fixing sleeve Velcro A surface 7 on the left side is adhesively matched with the fixing sleeve Velcro B surface 6 on the right side, and the fixing sleeve Velcro A surface 7 on the right side is adhesively matched with the fixing sleeve Velcro B surface 6 on the left side. The newborn's arms are constrained by the constraining fixing sleeves 5 to form an adducted state. The restraint method is gentle. While ensuring that the upper limbs are in a natural position, the discomfort caused to the newborn due to the restraint is reduced.

[0026] A lower limb fixing pad 10 is adhesively fixed to the body position fixing pad 1 below the restraining top 4. A scale line is provided on the edge of the lower limb fixing pad 10. The scale line is aligned with the positioning line 13 on the body position fixing pad 1 to determine that the lower limb fixing pad 10 is not tilted and pasted, thereby ensuring the angle of lower limb fixation, which can effectively avoid errors caused by inconsistent adjustment of the thigh and calf angles by nurses; a lower limb fixing shell bracket 9 is fixed to the upper surface of the lower limb fixing pad 10, and the bottom surface of the lower limb fixing shell bracket 9 is fixed to the lower limb fixing pad 10, and the top surface is in a concave state, supporting the lower limb fixing shell 8 to ensure the installation of the lower limb fixing shell 8 Stable, the lower limb fixing shell bracket 9 is embedded with the lower limb fixing shell 8 to prevent the lower limb fixing shell 8 from shaking or tilting. The lower limb fixing shell 8 is made of an elastic shell, that is, the upper edge of the opening of the lower limb fixing shell 8 can be deformed to expand the opening. The angle between the upper and lower sections of the lower limb fixing shell 8 is 90°, and the upper section of the lower limb fixing shell 8 is 45° to the edge of the lower limb fixing pad 10. The lower limb fixing shell 8 is padded with a flexible buffer layer 14, and the edge of the flexible buffer layer 14 is turned outward to wrap the edge of the lower limb fixing shell 8. The material of the flexible buffer layer 14 is soft and skin-friendly to avoid neonatal injury.

[0027] When in use, pull the headrest adjustment rope 3 according to the size of the newborn's head, and the fixed end of the headrest adjustment rope 3 pulls the two ends of the fixed headrest 2 closer to the middle, and the friction between the positioning rope loop 12 and the headrest adjustment rope 3 ensures that the two ends of the fixed headrest 2 are fixed. Fit the lower limb fixation pad 10 on the body position fixation pad 1 according to the size of the newborn. During the fitting process, align the scale line with the longitudinal positioning line to ensure that the distances between the lower limb fixation pads 10 on both sides and the central axis are equal, ensure that the edges of the lower limb fixation pad 10 and the body position fixation pad 1 are parallel and the distances are equal, and the upper edge of the lower limb fixation shell 8 is parallel to the 45° positioning line to ensure that the lower limb abduction is 45° with the center line of the trunk, and the installation of the fixation auxiliary device is completed.

[0028] Place the newborn on the position fixing pad 1, with the head placed in the middle of the fixed headrest 2. The headrest adjustment rope 3 can be pulled again according to the size of the head to adjust the position of both sides of the fixed headrest 2 so that the newborn's head can be kept in the central supine position; place both upper limbs into the restraint fixing sleeves 5 respectively, and after putting both arms in the adducted position, fit the Velcro A side 7 of the fixing sleeve on the Velcro B side 6 of the fixing sleeve to keep both upper limbs in the adducted position and fixed; open the two edges of the lower limb fixing shell 8 with one hand to expand the opening of the lower limb fixing shell 8, place both lower limbs of the newborn into the lower limb fixing shell 8 respectively, release the hand that opens the edge, and the two edges of the lower limb fixing shell 8 are automatically retracted to fix the lower limbs, and the lower limbs are kept in the abducted state at 45° with the center line of the trunk.

[0029] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter, characterized in that: The invention comprises a body position fixing pad (1), a fixed headrest (2) being adhesively fixed to the body position fixing pad (1), a pair of headrest adjustment ropes (3) being movably mounted on the lower surface of the fixed headrest (2), and a fixed sleeve Velcro A surface (7) being provided at two free ends of the upper surface of the fixed headrest (2); A restraining top (4) is adhesively fixed to the position fixing pad (1) below the fixed headrest (2), the restraining top (4) comprising two restraining fixing sleeves (5), and the cuffs of the restraining fixing sleeves (5) are provided with a fixing sleeve Velcro B surface (6) adhesively matched with the fixing sleeve Velcro A surface (7); A lower limb fixing pad (10) is adhesively fixed to the body position fixing pad (1) below the restraining top (4); a lower limb fixing shell bracket (9) is fixed to the upper surface of the lower limb fixing pad (10); a lower limb fixing shell bracket (9) is embedded in the lower limb fixing shell bracket (9); an angle between the upper section and the lower section of the lower limb fixing shell (8) is 90°, the upper section of the lower limb fixing shell (8) and the edge of the lower limb fixing pad (10) are at 45°, and the lower limb fixing shell (8) is padded with a flexible buffer layer (14).

2. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 1, characterized in that: The fixed sleeve Velcro surface A (7) and the fixed sleeve Velcro surface B (6) are retracted and fixed.

3. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 2, characterized in that: The Velcro A surface (7) of the fixed sleeve located on the left side is bonded to the Velcro B surface (6) of the fixed sleeve located on the right side, and the Velcro A surface (7) of the fixed sleeve located on the right side is bonded to the Velcro B surface (6) of the fixed sleeve located on the left side.

4. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 1, characterized in that: The middle part of the fixed headrest (2) is adhesively fixed to the body position fixing pad (1).

5. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 4, characterized in that: Both ends of the lower surface of the fixed headrest (2) are provided with positioning rope loops (12), a pair of headrest adjustment ropes (3) arranged opposite to each other are inserted into the positioning rope loops (12), the handle ends of the two headrest adjustment ropes (3) are respectively located outside the fixed headrest (2), and the fixed ends of the headrest adjustment ropes (3) are buckled on the lower surface of the fixed headrest (2) through adjustment rope fixing buckles (11).

6. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 5, characterized in that: Two pairs of positioning rope loops (12) are provided at corresponding positions on each side of the fixed headrest (2).

7. A fixation auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 1, characterized in that: The upper surface of the body position fixing pad (1) is provided with a positioning line (13), the positioning line (13) comprising a longitudinal positioning line (13) and a 45° positioning line (13), the 45° positioning line (13) being located at the lower half of the body position fixing pad (1); and the edge of the lower limb fixing pad (10) is provided with a scale line.

8. The fixing auxiliary device for positioning the tip of a neonatal PICC catheter according to claim 1, characterized in that: The edge of the front placket on one side of the restraining jacket (4) is connected to the outer side of the other side via Velcro.

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