Multifunctional measuring scale for peripherally inserted central catheter (PICC)

Abstract

The utility model relates to the technical field of measuring scale, disclose PICC multi -functional measuring scale of putting, including protective housing, the side fixed mounting of protective housing one side has the side shell, the rear side of protective housing is equipped with the clamping groove, the front side of protective housing is equipped with first pull -out, the side of side shell is equipped with second pull -out, the position of the upper side of the inside front side of protective housing and the position of the lower side of one side are all fixed mounting first limit cover, the inside of protective housing is provided with two fixed shafts. Through the setting of first tape measure, the puncture point can be measured from the elbow horizontal line of the patient, then, the bottom of the protective housing can be directly contacted on the puncture point near the second pull -out, and the arm circumference of the puncture point can be measured through the second tape measure, then, the protective housing can be turned over to continue measuring the puncture length of the catheter through the first tape measure, so that the puncture point, the arm circumference and the puncture length of the catheter can be quickly measured, the marking is not needed, and the accuracy of the measurement data is improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring ruler technology, and in particular to a multi-functional measuring ruler with PICC tube placement. Background Technology

[0002] A peripherally inserted central catheter (PICC) is a catheter inserted through a peripheral vein. It is inserted via the basilic vein, median cubital vein, cephalic vein, brachial vein, or external jugular vein (in newborns, it can also be inserted via the great saphenous vein of the lower limb, temporal vein of the head, or posterior auricular vein). The tip of the catheter is located in the superior or inferior vena cava.

[0003] Measuring bilateral arm circumference (leg circumference) and pre-insertion length during PICC placement is crucial for determining the catheter type and insertion depth. This prevents catheters from being inserted too deeply, which could cause arrhythmias, or too superficially, which could lead to catheter displacement. Measuring bilateral arm circumference during the indwelling period allows for assessment of thrombosis risk by comparing the arm circumference differences. Unilateral swelling and thickening may indicate thrombosis or phlebitis, requiring immediate treatment. Currently, the commonly used measurement method is a measuring tape or tape measure. During measurement, the puncture point is first measured from the elbow crease, followed by the circumference measurement. Then, the insertion length is measured from the marked point using a tape measure or tape measure. Furthermore, the puncture point is marked during the initial measurement to ensure proper positioning for subsequent arm circumference measurements. However, these marks are often wiped off by family members washing the patient or during disinfection. Therefore, repeated measurements and markings are necessary for subsequent arm circumference measurements, complicating the process and increasing the risk of data errors. Utility Model Content

[0004] The purpose of this invention is to provide a multi-functional measuring ruler for PICC tube placement, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A PICC insertion multi-functional measuring ruler includes a protective housing. A side shell is fixedly installed on one side of the protective housing. A slot is provided on the rear bottom side of the protective housing. A first pull-out opening is provided on the front bottom side of the protective housing. The bottom wall of the protective housing is arc-shaped. A second pull-out opening is provided on one side of the bottom of the side shell. First limiting sleeves are fixedly installed at the upper front and lower side positions inside the protective housing. Two fixed shafts are provided inside the protective housing, with one fixed shaft fixedly installed at the upper rear side inside the protective housing, and the other fixed shaft fixedly installed inside the protective housing... At the lower side, the two fixed shafts are perpendicular to each other, and the fixed shafts are coaxial with the corresponding first limiting sleeves. A spring groove is provided inside the fixed shaft, and a winding wheel is inserted and installed on the outside of the fixed shaft. A side baffle is fixedly installed on one side of the winding wheel, and the middle of the side baffle is also inserted and installed on the fixed shaft. A second limiting sleeve is fixedly installed on the side of the winding wheel opposite to the side baffle. The first limiting sleeve is used to cooperate with the second limiting sleeve to restrict the reverse rotation of the second limiting sleeve. A button is movably installed inside the second limiting sleeve, and a spring is also movably connected between the fixed shaft and the winding wheel.

[0006] As a further preferred embodiment of this utility model, a guide plate is fixedly installed on one side of the protective shell, and a third pull-out opening is provided on one side of the protective shell near the guide plate. The arrangement of the guide plate and the third pull-out opening allows one end of the first measuring tape to be guided and extended into the side shell through the guide plate and the third pull-out opening, thereby changing the output position of the first measuring tape.

[0007] As a further preferred embodiment of this utility model, the first limiting sleeve is provided with a pawl on the side biased towards the second limiting sleeve, and the end face of the second limiting sleeve biased towards the first limiting sleeve is provided with a ratchet.

[0008] As a further preferred embodiment of this utility model, spring grooves are provided on both sides of the spring groove, and a compression spring is interspersed between the two spring grooves.

[0009] As a further preferred embodiment of this utility model, one end of the coil spring is fitted into the coil spring groove, and the other end is fitted into the inside of the take-up wheel. The take-up wheel and the fixed shaft are connected by the coil spring, which can realize the take-up wheel reset function, thereby realizing the automatic storage function of the first tape measure or the second tape measure.

[0010] As a further preferred embodiment of this utility model, a limiting groove is provided on the inner side of the second limiting sleeve.

[0011] As a further preferred embodiment of this utility model, a top block is fixedly installed inside the button, and a limiting ring is fixedly installed outside the button. One end of the top block is inserted into two spring grooves, and the outer side of the limiting ring is rotatably connected to the limiting groove. The side of the button away from the second limiting sleeve passes through the protective shell and extends to the outside of the protective shell. One side of the second limiting sleeve is engaged with the corresponding limiting groove. The top block is set inside the button and inserted into two spring grooves, so that the compression spring in the spring groove applies a push to the top block, thereby enabling the fixed shaft to cooperate with the button and the limiting ring to achieve the engagement connection between the second limiting sleeve and the corresponding first limiting sleeve, thereby achieving the unidirectional rotation limit of the winding wheel, and enabling real-time positioning after the first and second measuring tapes are pulled out.

[0012] As a further preferred embodiment of this utility model, a first measuring tape is wound around the outer side of one of the winding wheels. The first measuring tape has graduations on both sides. One end of the first measuring tape extends to one side of the side shell through a guide plate, passing through a third pull-out port and a second pull-out port. A first pull rod is also fixedly installed at the end of the first measuring tape near the side shell. A second measuring tape is fixedly installed on the outer side of the other winding wheel. One end of the second measuring tape extends to the front of the protective shell through the first pull-out port and is fixedly installed with a second pull rod. The puncture point can be measured using the first measuring tape, thereby providing positioning for the placement of the protective shell. At the same time, the second measuring tape can be used to measure the circumference of the patient's limb.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the puncture point can be measured from the patient's elbow crease using the first measuring tape. Then, the bottom of the protective shell near the second pull-out opening can be placed against the puncture point, and the arm circumference at the puncture point can be measured using the second measuring tape. Afterward, the protective shell can be flipped over to continue measuring the insertion length of the catheter using the first measuring tape. This allows for rapid measurement of the puncture point, arm circumference, and insertion length without the need for markings, thus improving the accuracy of the measurement data. Attached Figure Description

[0014] Figure 1 This is a first schematic diagram of the main structure of this utility model; Figure 2 This is a second schematic diagram of the main structure of this utility model; Figure 3 This is a partial cross-sectional view of the protective shell of this utility model; Figure 4 This is a cross-sectional view of the protective shell of this utility model; Figure 5 This is a schematic diagram of the first limiting sleeve structure of this utility model; Figure 6 This is a cross-sectional view of the fixed shaft, button, and winding wheel of this utility model; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0015] In the diagram: 1. Protective shell; 2. Side shell; 3. Slot; 4. First pull-out opening; 5. Second pull-out opening; 6. First limiting sleeve; 7. Fixed shaft; 8. Spring groove; 9. Button; 10. Rewinding wheel; 11. Side baffle; 12. Second limiting sleeve; 13. Guide plate; 14. Third pull-out opening; 15. Spring groove; 16. Limiting groove; 17. Top block; 18. Limiting ring; 19. First measuring tape; 20. First pull rod; 21. Second measuring tape; 22. Second pull rod; 23. Spring. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figures 1-7 As shown, the PICC tube placement multifunctional measuring ruler provided by this utility model includes a protective shell 1, and a side shell 2 is fixedly installed on one side of the protective shell 1. Figure 1 Based on the indicated direction, a slot 3 is provided on the rear bottom side of the protective shell 1, and a first pull-out opening 4 is provided on the front bottom side of the protective shell 1. The bottom wall of the protective shell 1 is an arc-shaped surface to fit the arm or leg to complete the puncture point measurement except for the circumference. The directions of the first pull-out opening 4 and the slot 3 should be in line with the extension direction of the arc-shaped surface. The side shell 2 is located on the right side of the protective shell 1. A second pull-out opening 5 is provided at the center of the bottom of the side shell 2. A first limiting sleeve 6 is fixedly installed at the upper front side and the lower side side of the protective shell 1. Two fixed shafts 7 are provided inside the protective shell 1, and one of the fixed shafts 7 is fixedly installed at the upper rear side of the protective shell 1, while the other fixed shaft... The first limiting sleeve 6 is fixedly installed inside the protective shell 1 on one side below. The directions of the two fixed shafts 7 are perpendicular to each other, and the fixed shafts 7 are coaxial with the corresponding first limiting sleeve 6. A spring groove 8 is opened in the fixed shaft 7. A winding wheel 10 is inserted and installed on the outside of the fixed shaft 7. A side baffle 11 is fixedly installed on one side of the winding wheel 10, and the middle of the side baffle 11 is also inserted and installed on the fixed shaft 7. A second limiting sleeve 12 is fixedly installed on the side of the winding wheel 10 opposite to the side baffle 11. The first limiting sleeve 6 is used to cooperate with the second limiting sleeve 12 to restrict the second limiting sleeve 12 from rotating in the opposite direction. A button 9 is movably installed in the second limiting sleeve 12. A spring 23 is also movably connected between the fixed shaft 7 and the winding wheel 10.

[0018] like Figures 3-7As shown, a guide plate 13 is fixedly installed inside the protective shell 1 corresponding to the inner side of the side shell 2. A third pull-out opening 14 is provided on one side of the protective shell 1 near the guide plate 13. The arrangement of the guide plate 13 and the third pull-out opening 14 allows one end of the first measuring tape 19 to be guided and extended into the side shell 2 through the guide plate 13 and the third pull-out opening 14, thereby changing the output position of the first measuring tape 19. A pawl is provided on the side of the first limiting sleeve 6 biased towards the second limiting sleeve 12, and a ratchet is provided on the end face of the second limiting sleeve 12 biased towards the first limiting sleeve 6. Spring grooves 15 are provided on both sides of the spring groove 8, and a compression spring is inserted between the two spring grooves 15. One end of the spring 23 is locked in the spring groove 8, and the other end is locked inside the winding wheel 10. The winding wheel 10 is connected to the fixed shaft 7 through the spring 23, which can realize the reset function of the winding wheel 10, thereby realizing the automatic storage function of the first measuring tape 19 or the second measuring tape 21. Yes; a limiting groove 16 is opened on the inner side of the second limiting sleeve 12, a top block 17 is fixedly installed on the inner side of the button 9, and a limiting ring 18 is fixedly installed on the outer side of the button 9. One end of the top block 17 is inserted into two spring grooves 15, and the outer side of the limiting ring 18 is rotatably connected to the limiting groove 16. The side of the button 9 away from the second limiting sleeve 12 passes through the protective shell 1 and extends to the outside of the protective shell 1. The side of the second limiting sleeve 12 is limited by the corresponding first limiting sleeve 6 through a pawl and ratchet structure. The top block 17 is set inside the button 9 and inserted into two spring grooves 15, so that the compression spring in the spring groove 15 pushes the top block 17, thereby enabling the fixed shaft 7 to cooperate with the button 9 and the limiting ring 18 to achieve the engagement connection or separation of the second limiting sleeve 12 and the corresponding first limiting sleeve 6, which can realize the unidirectional rotation limitation of the winding wheel 10, and thus realize the real-time positioning of the first measuring tape 19 and the second measuring tape 21 after being pulled out.

[0019] like Figure 3 As shown, a first measuring tape 19 is wound around the outside of one of the winding wheels 10. The first measuring tape 19 has scales on both sides. One end of the first measuring tape 19 extends to one side of the side shell 2 through the guide plate 13, the third pull-out port 14, and the second pull-out port 5. A first pull rod 20 is also fixedly installed at the end of the first measuring tape 19 near the side shell 2. A second measuring tape 21 is fixedly installed on the outside of the other winding wheel 10. One end of the second measuring tape 21 extends to the front of the protective shell 1 through the first pull-out port 4 and is fixedly installed with a second pull rod 22. The puncture point can be measured by the first measuring tape 19, thereby providing positioning for the placement of the protective shell 1. At the same time, the second measuring tape 21 can measure the circumference of the patient's limb.

[0020] It should be noted that the process of applying the PICC insertion multifunctional measuring ruler of this utility model to arm circumference measurement is as follows: When measuring the puncture point of the patient, the patient lies flat on the bed with the puncture side arm at a 90° angle to the body and kept on the same plane as the torso. The first pull rod 20 can be pulled first, thereby pulling the first measuring tape 19. Then, the first measuring tape 19 drives the corresponding winding wheel 10 to rotate on the corresponding fixed shaft 7, and the winding wheel 10 gradually tightens the coil spring 23, so that the first measuring tape 19 can be pulled out from the second pull-out port 5. As the ruler 19 drives the take-up reel 10 to rotate, the second limiting sleeve 12 on one side of the take-up reel 10 rotates on the corresponding first limiting sleeve 6 side. When the first pull rod 20 is stopped, the button 9, the top block 17, and the limiting ring 18, with the help of the compression spring in the spring groove 15, cause the ratchet of the second limiting sleeve 12 to mesh with the pawl of the first limiting sleeve 6, forming a limit. This enables the take-up reel 10 to rotate in one direction, and simultaneously achieves unidirectional limiting of the take-up reel 10, thus ensuring the length of the first measuring tape 19 is fixed after it is pulled out. The first measuring tape 19 can then be pulled out by 10cm. Afterwards, to ensure accurate data measurement, the first pull rod 20 can be placed against the patient's elbow crease, and the bottom of the protective shell 1 can be placed against the patient's limb to quickly locate the puncture point. Subsequently, the arm circumference can be measured. Similar to the operation of the first measuring tape 19, the second measuring tape 21 can be pulled by the second pull rod 22, so that the second pull rod 22 wraps around the patient's arm and then locks into the slot 3. At this time, the lower button 9 can be pressed, so that the button 9 pushes the corresponding second limiting sleeve 12 to move on the corresponding fixed shaft 7 through the limiting ring 18, thereby allowing the button 9 to move. The top block 17 moves within the two spring grooves 15 and compresses the compression springs within the spring grooves 15. As a result, the second limiting sleeve 12 disengages from the corresponding first limiting sleeve 6, releasing the coil spring 23 between the take-up wheel 10 and the fixed shaft 7 from a relaxed state back to a tight spiral shape. This allows the take-up wheel 10 to rotate and rewind the second measuring tape 21, so that the second measuring tape 21, together with the protective shell 1, is re-fixed on the patient's limb. When the button 9 is stopped, the arm circumference at the puncture point can be measured using the second measuring tape 21 (the initial reading of the second measuring tape 21 here has already included the length of the bottom arc surface of the protective shell 1). If it is necessary to measure the puncture length of the catheter insertion simultaneously, the second pull rod 22 can be removed from the slot 3. After twisting the protective shell 1 180° in the height direction, with the bottom still supported at the puncture point, the second pull rod 22 can be inserted into the slot 3 again for measurement. Alternatively, the protective shell 1 can be manually lifted further, so that the second pull rod 22 continues to be pulled out a certain length with the bottom of the patient's limb as the fulcrum, thereby detaching the bottom of the protective shell 1 from the patient's limb. At this time, the winding wheel 10 can be adjusted to the other side of the protective shell 1 by passing it through the bottom of the protective shell 1 using the first pull rod 20. Then, as described above, the button 9 on the lower side is pressed, so that the button 9 pushes the corresponding second limiting sleeve 12 to move on the corresponding fixed shaft 7 through the limiting ring 18. This causes the top block 17 inside button 9 to move within the two spring slots 15 and compress the compression springs within the spring slots 15. As a result, the second limiting sleeve 12 disengages from the corresponding first limiting sleeve 6, releasing the coil spring 23 between the winding wheel 10 and the fixed shaft 7 from a relaxed state back to a tight spiral shape. This allows the winding wheel 10 to be rotated to wind up the second measuring tape 21, enabling the second measuring tape 21 to be re-fixed on the patient's limb with the protective shell 1 for stable positioning. The first measuring tape 19 is then moved along the vein to the right sternoclavicular joint plus 4-7 cm (the reading on the front of the first measuring tape 19 is the normal value, while the reading on the flipped side of the first measuring tape 19 is the width of the bottom arc surface of the protective shell 1), thus measuring the puncture length of the inserted catheter.

[0021] When storing the second measuring tape 21, the second pull rod 22 can be removed from the slot 3, and the protective shell 1 can be removed from the patient's limb. Then, press the two buttons 9 respectively, and the two winding wheels 10 can be reset and rotated through the above principle, so as to store the first measuring tape 19 and the second measuring tape 21 respectively.

[0022] It should be understood that the PICC insertion multifunctional measuring ruler of this utility model can also be used to measure the circumference of both legs. The method of puncture point positioning and circumference measurement is similar to that of arm circumference measurement, and will not be described in detail here.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A PICC-inserted multi-functional measuring ruler, characterized in that: The protective shell (1) includes a side shell (2) fixedly installed on one side of the protective shell (1), a slot (3) is provided on the rear bottom side of the protective shell (1), a first pull-out opening (4) is provided on the front bottom side of the protective shell (1), the bottom wall of the protective shell (1) is an arc-shaped surface, a second pull-out opening (5) is provided on one side of the bottom of the side shell (2), a first limiting sleeve (6) is fixedly installed at the upper front side and the lower side side of the protective shell (1), and two fixed shafts (7) are provided inside the protective shell (1), one of the fixed shafts (7) is fixedly installed at the upper rear side of the protective shell (1), and the other... One of the fixed shafts (7) is fixedly installed inside the protective shell (1) on one side below. The directions of the two fixed shafts (7) are perpendicular to each other, and the fixed shaft (7) is coaxial with the corresponding first limiting sleeve (6). A coil spring groove (8) is provided inside the fixed shaft (7). A winding wheel (10) is inserted and installed on the outside of the fixed shaft (7). A side baffle (11) is fixedly installed on one side of the winding wheel (10), and the middle part of the side baffle (11) is also inserted and installed on the fixed shaft (7). A second limiting sleeve (12) is fixedly installed on the side of the winding wheel (10) opposite to the side baffle (11). The first limiting sleeve (6) is used for The second limiting sleeve (12) is used in conjunction with the second limiting sleeve (12) to restrict the reverse rotation of the second limiting sleeve (12); a button (9) is movably installed inside the second limiting sleeve (12); a coil spring (23) is also movably connected between the fixed shaft (7) and the winding wheel (10); a pawl is provided on the side of the first limiting sleeve (6) biased towards the second limiting sleeve (12), and a ratchet is provided on the end face of the second limiting sleeve (12) biased towards the first limiting sleeve (6); spring grooves (15) are provided on both sides of the coil spring groove (8), and a compression spring is inserted between the two spring grooves (15); one end of the coil spring (23) is fitted into the coil spring groove (8). The other end is fitted inside the take-up reel (10); a limit groove (16) is opened inside the second limit sleeve (12); a top block (17) is fixedly installed inside the button (9), and a limit ring (18) is fixedly installed outside the button (9). One end of the top block (17) is inserted into two spring grooves (15), and the outside of the limit ring (18) is rotatably connected to the limit groove (16). The side of the button (9) away from the second limit sleeve (12) passes through the protective shell (1) and extends to the outside of the protective shell (1). One side of the second limit sleeve (12) is engaged with the corresponding first limit sleeve (6).

2. The PICC insertion tube multifunctional measuring ruler according to claim 1, characterized in that: A guide plate (13) is fixedly installed on one side of the inner shell (1), and a third pull-out opening (14) is provided on one side of the inner shell (1) near the guide plate (13).

3. The PICC insertion tube multifunctional measuring ruler according to claim 2, characterized in that: One of the winding reels (10) is fitted with a first measuring tape (19) on its outer side. The first measuring tape (19) has scales on both sides. One end of the first measuring tape (19) extends through the guide plate (13) through the third pull-out port (14) and the second pull-out port (5) to the side of the side shell (2). A first pull rod (20) is also fixedly installed on the end of the first measuring tape (19) near the side shell (2). A second measuring tape (21) is fixedly installed on the outer side of the other winding reel (10). One end of the second measuring tape (21) extends through the first pull-out port (4) to the front of the protective shell (1) and is fixedly installed with a second pull rod (22).

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