Sliding T-square for measuring arm circumference of PICC (peripherally inserted central catheter)

Abstract

The utility model discloses a sliding T-square for measuring the arm circumference of a PICC (Peripherally Inserted Central Catheter), which belongs to the technical field of measuring tools and comprises a T-square main body and a measuring belt, one end of the measuring belt is detachably connected with a connecting groove arranged at the front end of the T-square main body, a buckle device is arranged above the connecting groove, and a spring is arranged in the buckle device to align the buckle device; when the other end of the measuring tape passes through the buckle device, the buckle device can fix the measuring tape to form a closed loop. The PICC measuring T-square further comprises a positioning ruler, a fixing belt and an observation plate, the observation plate is made of transparent materials, a guide groove is formed in the positioning ruler, a slidable fixing buckle is arranged in the guide groove, and after the fixing buckle is pressed down, the fixing buckle can be fixed to the positioning ruler; the positioning ruler is slidably arranged at the bottom of the T-square main body; scales are arranged on the front face of the measuring tape, a buckle groove is formed in the back face of the measuring tape, and the T-square is convenient to operate, high in measuring speed and accurate in measured numerical value.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, in particular to a sliding T-square used for measuring the circumference of a PICC catheter arm. Background Art

[0002] Peripherally inserted central catheter (PICC) refers to a peripherally inserted central venous catheter that uses a catheter to puncture a peripheral vein and directly reaches the superior vena cava or inferior vena cava. PICC catheterization generally selects the basilic vein, median cubital vein or cephalic vein on the arm for puncture and cannulation. The catheter then passes through the axillary vein, subclavian vein, and innominate vein along the blood vessels in turn, and its tip is finally inserted into the superior vena cava. PICC catheterization establishes a safe, convenient, and long-term venous route, thereby reducing the direct contact between drugs and arm veins and the long-term stimulation of drugs on blood vessels. Therefore, it has been widely used in clinical practice. The PICC tube can be developed with the help of imaging to determine its placement position during placement. It can greatly reduce the pain of repeated peripheral venous punctures in patients with long-term infusions. The central vein has fast blood flow, ensuring the timely intake of various drugs and nutrient solutions and the smooth progress of chemotherapy. And its use is safe and reliable, so it is widely used in clinical practice.

[0003] In order to ensure the safety and effectiveness of catheterization and to promptly detect and deal with possible complications, the arm circumference needs to be measured regularly after PICC catheterization and compared with previous data to evaluate the effect of catheterization. If the arm circumference data differs greatly, it may mean that inflammation or other complications have occurred and medical treatment is needed in a timely manner.

[0004] At present, the main method for nursing staff to measure the upper arm circumference of patients during PICC puncture or catheter maintenance is to ask the patient to bend the upper limb arm, determine the position of the elbow crease, use the elbow crease as a mark, and then measure upward along the patient's upper arm starting from the elbow crease of the patient's upper arm. This method of measuring PICC arm circumference is slow and the measurement results are inaccurate. When facing a large number of patients, frequent measurement errors can easily lead to misdiagnosis by nursing staff due to inaccurate measurement data. Utility Model Content

[0005] In order to solve the above technical problems, the main purpose of the utility model is to provide a sliding T-square for measuring the circumference of the PICC catheter arm to solve the problems of slow measurement speed, unstable and inaccurate measurement results, etc.

[0006] According to one aspect of the utility model, a sliding T-ruler for measuring the arm circumference of a PICC catheter is provided, comprising a T-ruler body and a measuring tape, one end of the measuring tape is detachably connected to a connecting groove arranged at the front end of the T-ruler body, a buckle device is provided above the connecting groove, and a spring is provided inside the buckle device to return it to the right position; when the other end of the measuring tape passes through the buckle device, the buckle device can fix the measuring tape to form a closed loop; the utility model also includes a positioning ruler, a fixing tape and an observation plate, the observation plate is made of a transparent material, a guide groove is provided on the positioning ruler, a slidable fixing buckle is provided in the guide groove, and the fixing buckle can be fixed to the positioning ruler after pressing the fixing buckle; the positioning ruler is slidably arranged at the bottom of the T-ruler body; a scale is provided on the front side of the measuring tape, and a buckle groove is provided on the back side of the measuring tape.

[0007] Furthermore, fixing buckles are provided on both the left and right sides of the T-square body.

[0008] Furthermore, the T-ruler body includes a buckle device and a control switch, and the buckle device can be separated from the measuring tape when the control switch is pushed downward.

[0009] Furthermore, alignment scale lines are provided on the observation plate.

[0010] Furthermore, the measuring tape is a cloth tape; and the positioning ruler is a cloth tape.

[0011] Furthermore, adhesive portions are provided at both ends of the fixing belt.

[0012] Furthermore, the width of the T-ruler body is 2 cm to 4 cm, the width of the measuring tape is 0.8 times the width of the T-ruler body; the width of the fixing buckle is 0.5 cm to 1 cm; and the length of the positioning ruler is 6 cm to 11 cm.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the existing sliding T-square for measuring the arm circumference of a PICC catheter has a slow measurement speed and unstable measurement results. When facing a large number of patients, frequent measurement errors easily lead to misdiagnosis by nursing staff due to inaccurate measurement data. To this end, the utility model provides a sliding T-square for measuring the arm circumference of a PICC catheter, which is easy to operate, has a fast measurement speed, and has accurate measurement values. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1A front view schematic diagram of a sliding T-square for measuring the circumference of a PICC catheter arm provided by the utility model;

[0016] Figure 2 A bottom schematic diagram of a sliding T-square for measuring the circumference of a PICC catheter arm provided by the utility model;

[0017] Figure 3 The present invention is a schematic diagram of the buckle structure of a sliding T-square used for measuring the circumference of a PICC catheter arm.

[0018] The above drawings include the following reference numerals:

[0019] 1. T-ruler body; 10. Buckle device; 11. Spring; 12. Control switch; 13. Observation plate; 130. Alignment scale line; 14. Connection groove; 2. Measuring tape; 20. Buckle groove; 21. Scale; 3. Fixing tape; 31. Adhesive part; 4. Positioning ruler; 41. Guide groove; 42. Fixing buckle. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] As mentioned in the background technology, the existing sliding T-square used for measuring the arm circumference of PICC catheter placement has a slow measurement speed and unstable measurement results. When facing a large number of patients, frequent measurement errors can easily lead to misdiagnosis by nursing staff due to inaccurate measurement data. To this end, the utility model provides a sliding T-square for measuring the arm circumference of a PICC catheter placement. The sliding T-square for measuring the arm circumference of a PICC catheter placement is easy to operate, has a fast measurement speed, and has accurate measurement values. The sliding T-square for measuring the arm circumference of a PICC catheter placement of the utility model will be described in detail below in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 3 As shown, the utility model provides a sliding T-ruler for measuring the circumference of a PICC catheter arm, hereinafter referred to as a PICC measuring T-ruler. Similar to the prior art, the PICC measuring T-ruler comprises a T-ruler body 1 and a measuring belt 2, one end of the measuring belt 2 is detachably connected to a connecting groove 14 provided at the front end of the T-ruler body 1, a buckle device 10 is provided above the connecting groove 14, and a spring 11 is provided inside the buckle device 10 to return it to the normal position; when the other end of the measuring belt 2 passes through the buckle device 10, the buckle device 10 can fix the measuring belt 2 to form a closed loop. Different from the prior art, the PICC measuring T-ruler also includes a positioning ruler 4, a fixing belt 3 and an observation plate 13. The observation plate 13 is made of a transparent material. A guide groove 41 is provided on the positioning ruler 4. A slidable fixing buckle 42 is provided in the guide groove 41. After pressing the fixing buckle 42, the fixing buckle 42 can be fixed on the positioning ruler 4; the positioning ruler 4 is slidably arranged at the bottom of the T-ruler body 1; a scale 21 is provided on the front side of the measuring belt 2, and a buckle groove 20 is provided on the back side of the measuring belt 2.

[0025] When the PICC is actually used to measure the T-rule, first fix the fixing belt 3 on the patient's elbow crease, then slide the fixing buckle 42 close to one end of the fixing belt 3 according to actual needs and fix the fixing buckle 42 on the positioning ruler 4. The sliding distance of the fixing buckle 42 is generally 5 cm or 10 cm. In other words, for children, the position to be measured is generally 5 cm away from the elbow crease; for adults, the position to be measured is generally 10 cm away from the elbow crease. When ensuring that the fixing buckle 42 is fixed on the positioning ruler 4, slide the T-rule body 1 so that it is against the fixing buckle 42, and finally slide the fixing buckle 42 behind the T-rule body 1 so that it is against the surface of the T-rule body 1, and press the fixing buckle 42 to ensure that the sliding T-rule body 1 does not move.

[0026] After the above steps are completed, the measuring tape 2 is connected to the T-rule body 1 to form a closed loop, and the buckle groove 20 on the back of the measuring tape 2 can be fixed on the buckle device 10 to prevent the measuring tape 2 from falling off. After the measuring tape 2 is continuously tightened to be firmly fixed on the affected part, the patient's arm circumference can be obtained through the observation plate 13 on the T-rule body 1.

[0027] As a preferred embodiment, the fixing buckles 42 provided on the left and right sides of the T-rule body 1 can realize the rapid positioning of the T-rule body 1, thereby improving the measurement speed and accuracy.

[0028] The T-ruler body 1 comprises a buckle device 10 and a control switch 12 . That is to say, when the measuring work is finished, the control switch 12 can be pushed downward to separate the buckle device 10 from the measuring tape 2 .

[0029] As a preferred embodiment, the surface of the T-rule body 1 comprises an observation plate 13 made of a transparent material, and there are alignment scale lines 130 on the observation plate 13, through which the arm circumference of the patient can be obtained more quickly and conveniently.

[0030] As a preferred embodiment, the measuring belt 2 used for convenient fixation is a leather belt. The patient's arm is a soft tissue, and in order to avoid causing discomfort to the patient during the measurement process, the positioning ruler 4 uses a soft cloth belt.

[0031] As a preferred embodiment, both ends of the fixing belt 3 are provided with adhesive portions 31. By adhesively bonding the two ends of the fixing belt 3 together, the positioning ruler 4 can be quickly positioned and fixed.

[0032] As a preferred embodiment, the width of the T-ruler body 1 is 2 cm to 4 cm, the width of the measuring tape 2 is 0.8 times the width of the T-ruler body 1; the width of the fixing buckle 42 is 0.5 cm to 1 cm; the length of the positioning ruler 4 is 6 cm to 11 cm, that is to say:

[0033] When using a 6 cm long positioning ruler 4, using a T-rule body 1 with a width of 2 cm and a fixing buckle 42 with a width of 0.5 cm and a fixing buckle 42 with a width of 1 cm (a fixing buckle 42 with a width of 0.5 cm is placed in front of the T-rule body 1, and a fixing buckle 42 with a width of 1 cm is placed behind the T-rule body 1), it is just possible to accurately measure the arm circumference of a child, that is, the arm circumference 5 cm away from the elbow crease.

[0034] When using a 6 cm long positioning ruler 4, a 4 cm wide T-rule body 1 and two 1 cm wide fixing buckles 42 are used (a 1 cm wide fixing buckle 42 is placed in front of the T-rule body 1, and a 1 cm wide fixing buckle 42 is placed behind the T-rule body 1). At this time, the T-rule body 1 and the fixing belt 3 can be regarded as a whole, that is, after the fixing belt 3 is tied, the measuring belt 2 is directly tied; the child's arm circumference, that is, the arm circumference 5 cm away from the elbow crease, can be accurately measured.

[0035] When using a 11 cm long positioning ruler 4, a 2 cm wide T-rule body 1 and a 0.5 cm wide fixing buckle 42 are used, the affected part of the patient can be measured in a wider range to prevent certain special situations.

[0036] When using a 11 cm long positioning ruler 4, using a 4 cm wide T-rule body 1 and a 0.5 cm wide fixing buckle 42 and a 1 cm wide fixing buckle (a 0.5 cm wide fixing buckle 42 is placed in front of the T-rule body 1 and a 1 cm wide fixing buckle 42 is placed behind the T-rule body 1), it is just possible to accurately measure the arm circumference of an adult, that is, the arm circumference at a distance of 10 cm from the elbow crease. In addition, when the 0.5 cm wide fixing buckle 42 is placed at 4.5 cm of the positioning ruler, the arm circumference of a child can also be accurately measured.

[0037] When using a 11 cm long positioning ruler 4, using a 2 cm wide T-rule body 1 and two 1 cm wide fixing buckles 42 (a 1 cm wide fixing buckle 42 is placed in front of the T-rule body 1, and a 1 cm wide fixing buckle 42 is placed behind the T-rule body 1), it is just possible to accurately measure the arm circumference of an adult, that is, the arm circumference at a distance of 10 cm from the elbow crease. In addition, when the 1 cm wide fixing buckle 42 is placed at 4 cm from the positioning ruler, the arm circumference of a child can also be accurately measured.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sliding T-ruler for measuring the circumference of a PICC catheter arm, comprising a T-ruler body (1) and a measuring tape (2), one end of the measuring tape (2) being detachably connected to a connecting groove (14) provided at the front end of the T-ruler body (1), a buckle device (10) being provided above the connecting groove (14), a spring (11) being provided inside the buckle device (10) to return it to the normal position; when the other end of the measuring tape (2) passes through the buckle device (10), the buckle device (10) can fix the measuring tape (2) to form a closed loop, characterized in that: The invention also comprises a positioning ruler (4), a fixing belt (3) and an observation plate (13), wherein the observation plate (13) is made of a transparent material, a guide groove (41) is provided on the positioning ruler (4), a slidable fixing buckle (42) is provided in the guide groove (41), and after the fixing buckle (42) is pressed, the fixing buckle (42) is fixed on the positioning ruler (4); the positioning ruler (4) is slidably arranged at the bottom of the T-rule body (1); a scale (21) is provided on the front side of the measuring belt (2), and a buckle groove (20) is provided on the back side of the measuring belt (2).

2. A sliding T-square for measuring PICC catheter arm circumference according to claim 1, characterized in that: The left and right sides of the T-ruler body (1) are both provided with fixing buckles (42).

3. A sliding T-square for measuring PICC catheter arm circumference according to claim 1, characterized in that: The T-ruler body (1) comprises a buckle device (10) and a control switch (12); when the control switch (12) is pushed downward, the buckle device (10) can be separated from the measuring tape (2).

4. A sliding T-square for measuring PICC catheter arm circumference according to claim 1, characterized in that: The observation plate (13) is provided with an alignment scale line (130).

5. The sliding T-square for measuring the circumference of a PICC catheter arm according to claim 1, characterized in that: The measuring tape (2) is a cloth tape; and the positioning ruler (4) is a cloth tape.

6. The sliding T-square for measuring the circumference of a PICC catheter arm according to claim 1, characterized in that: Adhesive portions (31) are provided at both ends of the fixing belt (3).

7. The sliding T-square for measuring the circumference of a PICC catheter arm according to claim 1, characterized in that: The width of the T-rule body (1) is 2 cm to 4 cm, the width of the measuring tape (2) is 0.8 times the width of the T-rule body (1); the width of the fixing buckle (42) is 0.5 cm to 1 cm; and the length of the positioning ruler (4) is 6 cm to 11 cm.

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