An ECMO leg conduit fixation and leg circumference measurement device

Abstract

The utility model provides an ECMO leg catheter fixing and leg circumference measuring device, has a medical silica gel piece (1), the medical silica gel piece middle left and right each fixed with a holding piece (2), the medical silica gel piece near upper side and near lower side are fixed with measuring band (4) and fixed band (3) respectively, the holding piece has the base (23), the recess (231) is equipped with on the base upper surface transversely, the base rear side upper portion is connected with the gland (22) through pivot no. 1 (21), the recess of the base front is connected with the spring-back type buckle (25) through pivot no. 2 (24), the front side of the gland and the spring-back type buckle open-close cooperation, the utility model discloses be applicable to ECMO leg catheter fixing, and can conveniently measure the leg circumference.

Description

Technical Field

[0001] This utility model relates to medical devices, particularly ECMO catheter fixation and leg circumference measurement devices. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) is one of the ultimate support methods for critically ill patients with cardiopulmonary failure. It can rapidly improve hypoxemia and circulatory failure in critically ill patients within a short period using devices such as a power pump and oxygenator, partially replacing the patient's cardiopulmonary function and buying time for recovery. With the rapid improvement of medical standards and the rapid development of critical care medicine in my country, ECMO technology has been rapidly implemented throughout the country in recent years. However, this widespread adoption of ECMO technology has also placed higher demands on its implementation and application management.

[0003] Generally, ECMO applications involve two cannulation methods: vein-to-vein and vein-to-artery. During cannulation, blood is oxygenated outside the body and then returned to the patient to fully or partially support the patient's cardiopulmonary function. Vascular access is typically chosen via the femoral vein, femoral artery, or internal jugular vein. To meet flow requirements, ECMO arterial and venous cannulas are typically large and heavy, making them prone to displacement or dislodgement during patient movement, posing significant safety risks. Currently, the common clinical method is to directly suture the ECMO catheter to the patient's leg skin for fixation. However, due to limitations in the suture material, this method cannot provide absolute fixation of the catheter. Furthermore, ECMO patients are usually critically ill with fragile skin, and this method undoubtedly increases the risk of infection and the difficulty of skin care. In addition, if a femoral artery cannula is placed, the assessment of blood supply to the limb with the cannula, including the monitoring of deep vein thrombosis, is a key focus for medical staff during ECMO operation. The simplest, most economical, and effective method is to measure the leg circumference of both lower limbs to dynamically assess the blood supply to both lower limbs. However, because the ECMO cannula is relatively fixed, measuring the leg circumference at the marked point with a tape measure is particularly cumbersome and inconvenient. Utility Model Content

[0004] This invention aims to address the problems arising from the current clinical practice of directly suturing ECMO catheters to the patient's leg skin for fixation. These problems include: 1. Due to limitations in the suture material, the catheter fixation and stability are not very good; 2. These patients typically have fragile skin, increasing the risk of infection and the difficulty of skin care; 3. Leg circumference measurements for assessing lower limb blood supply are cumbersome and inconvenient. The technical solution adopted in this invention can solve the above problems.

[0005] To solve the above problems, the technical solution adopted by this utility model is characterized by having a medical silicone sheet, with a support member fixed on the left and right sides of the middle of the medical silicone sheet, and a measuring strap and a fixing strap fixed on the upper and lower sides of the medical silicone sheet, respectively.

[0006] The support has a base with a horizontal groove on the top. A cover is connected to the upper rear side of the base via a pivot. A spring-loaded hook is connected to the groove on the front side of the base via a pivot. The front side of the cover and the spring-loaded hook can be opened and closed.

[0007] Preferably, a spring-loaded hook is connected to the groove at the front of the base via a pivot two. Alternatively, a torsion spring is fitted on the pivot two to give the spring-loaded hook a spring-loaded tendency to spring back.

[0008] Preferably, the front side of the pressure cap and the spring-loaded hook can be opened and closed by having a notch on the front side of the pressure cap, and a fastening platform integrally provided in the notch and the pressure cap, which cooperates with the spring-loaded hook.

[0009] Furthermore, the inner surface of the pressure cap is provided with recesses on both sides in the lateral direction that correspond to the grooves of the base. The groove of the base has a boss in the middle that is higher than the bottom surface of the groove. When the pressure cap is closed, the boss in the groove of the base and the plane between the recess of the pressure cap are correspondingly matched to form a gap area. The tube can be slightly deformed in this gap area to ensure that the tube is more reliably fixed.

[0010] The measuring strap has a measuring scale, one end of the measuring strap is connected to a buckle, and a section of the other end of the measuring strap is provided with a fastener that cooperates with the buckle. The buckle and the fastener form a fastening pair. The two ends of the fixing strap have a hook and loop side and a fleece side, respectively.

[0011] Suitable is that the measuring strap, fixing strap and support are glued and fixed to the medical silicone sheet.

[0012] Alternatively, the measuring strap and the fixing strap can be sewn together with the medical silicone sheet, and the support can be glued to the medical silicone sheet.

[0013] The measuring strap and fixing strap can be fixed to the front of the silicone sheet or the back of the silicone sheet.

[0014] In application, the measuring strap can measure leg circumference while binding the device. Clinically, the location for measuring the thigh circumference is generally 15cm above the upper edge of the patella, and the location for measuring the calf circumference is generally 10cm below the lower edge of the patella. Therefore, based on the distance from the lower side of the medical silicone sheet to the measuring strap, this invention can be divided into two types: one for the thigh and one for the calf. For the thigh type, the distance from the lower side of the medical silicone sheet to the measuring strap is 15cm; for the calf type, the distance is 10cm. In application, for the thigh type, the lower side of the medical silicone sheet corresponds to the upper edge of the patella; for the calf type, the lower side of the medical silicone sheet (approximately the same as the upper side in application) corresponds to the lower edge of the patella.

[0015] This invention features a medical-grade silicone sheet that conforms to the skin of the leg, and the silicone sheet is fitted with a holder for placing and securing an ECMO catheter, as well as measuring and securing straps. Therefore, this invention offers the following advantages:

[0016] 1. ECMO catheters do not need to be sutured to the patient's leg skin, greatly reducing the risk of infection and the difficulty of skin care;

[0017] 2. The ECMO catheter showed good fixation and positioning results;

[0018] 3. The measuring straps combine binding and measuring functions, making leg circumference measurement convenient, quick, and accurate.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a top view of a pipe holder according to an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 Bottom view of the pipe fitting;

[0023] Figure 4 yes Figure 3 A schematic diagram of opening the pressure cap on the pipe fitting;

[0024] Figure 5 yes Figure 4 Left view of the pipe fitting;

[0025] Figure 6 yes Figure 4 Top view of the pipe fitting;

[0026] Figure 7This is a top view of a pipe holder according to another embodiment of the present invention;

[0027] Figure 8 yes Figure 7 Bottom view of the pipe fitting;

[0028] Figure 9 yes Figure 8 A schematic diagram of opening the pressure cap on the pipe fitting;

[0029] Figure 10 yes Figure 9 Left view of the pipe fitting;

[0030] Figure 11 yes Figure 9 Top view of the pipe fitting;

[0031] Figure 12 yes Figure 2 Sectional view A1-A1;

[0032] Figure 13 yes Figure 7 Sectional view A2-A2;

[0033] Figure 14 This is a top view of the pressure cap in this utility model;

[0034] Figure 15 yes Figure 14 BB cross-sectional view of the pressure cap;

[0035] Figure 16 It is a comparison Figure 1 A schematic diagram of the measuring strap and fixing strap adhesively fixed to the front of the medical silicone sheet in this utility model;

[0036] Figure 17 It is a comparison Figure 16 A schematic diagram of the measuring strap and fixing strap sewn and fixed to the front of the medical silicone sheet in this utility model;

[0037] Figure 18 yes Figure 1 The top and bottom are inverted, and the marking distance is changed from 15cm to 10cm. This is a schematic diagram of the external structure of this utility model, which is suitable for the lower leg.

[0038] The markings and corresponding parts in the diagram are as follows: 1 Medical silicone sheet, 2 Support piece, 21 Rotary shaft one, 22 Pressure cap, 221 Notch, 222 Buckle, 223 Notch, 23 Base, 231 Groove, 232 Boss, 24 Rotary shaft two, 25 Spring-loaded hook, 3 Fixing strap, 31 Velcro, 4 Measuring strap, 41 Buckle. Detailed Implementation

[0039] Example 1

[0040] In the following description, terms such as up, down, left, right, front, back, and horizontal are relative and generally refer to the illustrations of this utility model. This embodiment of an ECMO leg catheter fixation and leg circumference measurement device is shown below. Figure 1 The device comprises a medical silicone sheet 1, with a support member 2 fixed to the left and right sides of the middle of the medical silicone sheet 1. A measuring strap 4 and a fixing strap 3 are fixed to the upper and lower sides of the medical silicone sheet 1, respectively. The measuring strap 4 has a measuring scale, and one end of the measuring strap 4 is connected to a buckle support member 41. A section of the other end of the measuring strap 4 has a fastener that mates with the buckle, which is shown as a buckle hole in the figure. The two ends of the fixing strap 3 have a barbed side and a fleece side of Velcro 31, respectively.

[0041] See Figure 2-6 The supporting member 2 has a base 23, with a horizontal groove 231 on the top of the base 23. A pressure cap 22 is connected to the upper rear side of the base 23 via a pivot 21. A spring-loaded hook 25 is connected to the groove on the front side of the base 23 via a pivot 24. Figure 12 A torsion spring 26 is fitted on the second rotating shaft 24.

[0042] See Figure 5 , 15 The pressure cap 22 has a notch 221 on the front side, and a fastening platform 222 is integrally provided in the notch with the pressure cap. The fastening platform 222 cooperates with the spring-loaded hook 25 for opening and closing the pressure cap 22.

[0043] The measuring strap 4, the fixing strap 3, and the support 2 are glued and fixed to the medical silicone sheet 1. The measuring strap 4 and the fixing strap 3 are located on the back of the medical silicone sheet 1, and the support 2 is located on the front of the medical silicone sheet 1.

[0044] See Figure 16 , 17 The measuring strap 4 and the fixing strap 3 can also be located on the front of the medical silicone sheet 1. See also Figure 17 Regardless of whether the measuring strap 4 and the fixing strap 3 are located on the front or back of the medical silicone sheet 1, the measuring strap 4 and the fixing strap 3 can be glued or sutured to the medical silicone sheet 1.

[0045] See Figure 18 It can be regarded as Figure 1 The top and bottom are inverted, and the marked size is 10cm. This view corresponds to the application on the lower leg. Figure 1 The corresponding application is for the thigh.

[0046] See Figure 1 For thigh applications, the distance from the underside of the medical silicone pad 1 to the measuring strap 4 is typically 15cm. During application, the underside of the medical silicone pad 1 corresponds to the upper edge of the patella. The device, including the silicone pad 1, is located on the thigh and secured by the fixing strap 3 and the measuring strap 4. The measuring strap 4 is used for thigh circumference measurement. See [link / reference]. Figure 18For the calf, use a medical silicone sheet on the lower side (the upper side shown in the picture). Figure 18 for Figure 1 The distance from the inverted (upper and lower) to the measuring strap is typically 10cm. When applying, the lower side of the medical silicone sheet 1 (the upper side shown in the diagram) is located... Figure 18 for Figure 1 The device (inverted, above and below) corresponds to the lower edge of the patella. The silicone sheet 1 is located on the lower leg and is secured by a fixing strap 3 and a measuring strap 4, which is also used to measure the lower leg circumference. In application, the ECMO catheter is placed across the groove 231 of the base 23, the cap 22 closes, and is secured by a spring-loaded hook 25 and a locking platform 222, thus positioning and fixing the ECMO catheter.

[0047] The beneficial effects of this utility model include: 1. The ECMO catheter does not need to be sutured to the patient's leg skin, greatly reducing the risk of infection and the difficulty of skin care; 2. The ECMO catheter has good fixation and positioning effect; 3. The measuring strap has both binding and measuring functions, making leg circumference measurement convenient, quick, and accurate.

[0048] Example 2

[0049] For this example device, see... Figure 7-11 13, differing from the previous example, has recesses 223 on both sides of the inner surface of the pressure cap 22, corresponding to the grooves 231 of the base. The base 23 has a protrusion 232 in the center of the groove, higher than the bottom surface of the groove. From Figure 13 As can be seen, when the ECMO catheter is positioned and fixed, the space between the boss 232 on the bottom surface of the groove of the base 23 and the plane between the two recesses 223 of the cap 22 forms an approximately rectangular space. In this way, the ECMO catheter is slightly deformed by pressure, and the catheter is more fixed.

Claims

1. A device for fixing an ECMO leg catheter and measuring leg circumference, characterized in that: It has a medical silicone sheet (1), and a support (2) is fixed at the left and right sides of the middle of the medical silicone sheet. A measuring strap (4) and a fixing strap (3) are fixed at the upper and lower sides of the medical silicone sheet, respectively. The support has a base (23) with a groove (231) on the upper side of the base. A cover (22) is connected to the upper rear side of the base via a pivot (21). A spring-loaded hook (25) is connected to the groove on the front side of the base via a pivot (24). The front side of the cover and the spring-loaded hook can be opened and closed.

2. The ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, characterized in that: The groove at the front of the base is connected to a spring-loaded hook via a pivot two (24), meaning that a torsion spring (26) is fitted on the pivot two to give the spring-loaded hook a spring-loaded tendency to spring back.

3. The ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, characterized in that... The opening and closing cooperation between the front side of the pressure cap and the spring-loaded hook means that there is a notch (221) on the front side of the pressure cap, and a buckle (222) is integrally provided in the notch with the pressure cap, which cooperates with the spring-loaded hook.

4. The ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, 2, or 3, characterized in that: The inner surface of the pressure cap is provided with recesses (223) on both sides in the lateral direction, which correspond to the grooves of the base. The groove of the base has a boss (232) that is higher than the bottom surface of the groove.

5. An ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, 2, or 3, characterized in that... The measuring strap has a measuring scale, one end of the measuring strap is connected to a buckle (41), and a section of the other end of the measuring strap is provided with a fastener that cooperates with the buckle. The two ends of the fixing strap have a hook and loop side and a fleece side, respectively.

6. An ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, 2, or 3, characterized in that: The measuring strap, fixing strap, and support are adhesively fixed to the medical silicone sheet.

7. An ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, 2, or 3, characterized in that: The measuring strap and fixing strap are sewn and fixed to the medical silicone sheet, and the support is glued and fixed to the medical silicone sheet.

8. An ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, 2, or 3, characterized in that... The measuring strap and the fixing strap are fixed to the front or back of the silicone sheet.

9. An ECMO leg catheter fixation and leg circumference measurement device as described in claim 1, 2, or 3, characterized in that: The distance from the side of the silicone sheet adjacent to the fixing strap to the measuring strap is 15 cm or 10 cm.

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