Method and device for determining size of extracorporeal circulation intubation tube and computer equipment

Abstract

The invention relates to the technical field of medical instrument selection, and discloses an extracorporeal circulation intubation size determination method and device and computer device.The extracorporeal circulation intubation size determination method is applied to the computer device.The method comprises the steps that the intubation position for a target object and the weight of the target object are obtained, and the size of the target object is determined based on the intubation position and the weight; selecting a corresponding target formula from pre-configured calculation formulas, obtaining a corresponding intubation size based on the target formula, and determining the size of the extracorporeal circulation intubation based on the intubation size; after a medical worker inputs the intubation position of the target object and the weight of the target object into the computer equipment, the computer equipment can display the size of the extracorporeal circulation intubation, the medical worker does not need to carry out table look-up operation, and therefore the technical effect of improving the simplicity, convenience and accuracy of the method for determining the size of the extracorporeal circulation intubation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device selection, and in particular to a method, device and computer equipment for determining the size of an extracorporeal circulation cannula. Background Art

[0002] The current method for selecting the circumference of central arterial and central venous catheters is for medical staff to consult a table based on the patient's weight and catheter type. However, this traditional table-based approach has numerous drawbacks. The table-based lookup process is cumbersome and requires medical staff to interrupt operations to check the table during critical situations such as emergency patient care and preoperative preparation. This not only consumes a significant amount of time but can also lead to table errors due to time constraints, seriously impacting diagnostic and treatment efficiency and safety. Summary of the Invention

[0003] In view of this, the present invention provides a method, device and computer equipment for determining the size of an extracorporeal circulation cannula to solve the problem that the existing method of selecting the circumference of a central arterial cannula and the circumference of a central venous cannula is: medical staff look up the table and select according to the patient's weight and the type of cannula. The table lookup process is cumbersome and requires medical staff to interrupt the operation to look up the table and compare in scenarios where every second counts, such as emergency treatment of patients and preoperative preparation. This not only consumes a lot of time, but may also lead to table lookup errors due to time constraints, seriously affecting the efficiency and safety of diagnosis and treatment.

[0004] In a first aspect, the present invention provides a method for determining the size of an extracorporeal circulation cannula, the method comprising:

[0005] obtaining a cannula position for a target subject and a weight of the target subject;

[0006] Selecting a corresponding target formula from pre-configured calculation formulas based on the intubation position and the body weight;

[0007] Based on the target formula, a corresponding cannula size is obtained;

[0008] Based on the cannula size, the size of the extracorporeal circulation cannula is determined.

[0009] In an optional embodiment, the cannulation site is the central artery or central vein.

[0010] In an optional embodiment, the selecting a corresponding target formula from a preconfigured calculation formula based on the intubation position and the body weight includes:

[0011] When the cannula is located at the central artery and X≤30 kg, the first formula is selected as the target formula, and the first formula is:

[0012] When the cannulation position is the central artery and 30 kg < X ≤ 50 kg, the second formula is selected as the target formula, and the second formula is:

[0013] When the cannula is located at the central artery and 50 kg < X < 60 kg, the second and third formulas are selected as the target formulas, and the third formula is:

[0014] When the cannulation position is the central artery and X≥60 kg, the fourth formula is selected as the target formula, and the fourth formula is: L=24 mm;

[0015] Wherein, X is body weight and L is the cannula size.

[0016] In an optional embodiment, determining the size of the extracorporeal circulation cannula based on the cannula size includes:

[0017] Selecting a target size closest to the cannula size from a plurality of candidate sizes; the candidate size is the size of the extracorporeal circulation cannula to be selected;

[0018] The target size is determined as the size of the extracorporeal circulation cannula.

[0019] In an optional embodiment, the selecting a corresponding target formula from a preconfigured calculation formula based on the intubation position and the body weight includes:

[0020] When the cannula is located at the central vein and X is less than 20 kg, the fifth formula is selected as the target formula. The fifth formula is:

[0021] When the cannula is located at the central vein and 20 kg ≤ X ≤ 60 kg, the sixth formula is selected as the target formula, and the sixth formula is:

[0022] When the cannula is located at the central vein and X>60 kg, the seventh formula is selected as the target formula, and the seventh formula is: L=34 mm or L=36 mm;

[0023] Wherein, X is body weight and L is the cannula size.

[0024] In an optional embodiment, when the cannula position is a central vein, obtaining the cannula position for the target object further includes:

[0025] A detailed location of a cannula is acquired for the target object, where the detailed location of the cannula includes the superior vena cava and the inferior vena cava.

[0026] In an optional embodiment, determining the size of the extracorporeal circulation cannula based on the cannula size includes:

[0027] Determine whether the target subject's weight exceeds 60 kg. If so, and the cannula is located in the superior vena cava, the cannula size L=34 mm; if so, and the cannula is located in the inferior vena cava, the cannula size L=36 mm;

[0028] If not, then adding a preset adjustment value to the target formula to obtain the cannula size;

[0029] The size of the extracorporeal circulation cannula is determined based on the cannula size.

[0030] In an optional embodiment, determining the size of the extracorporeal circulation cannula based on the cannula size includes:

[0031] When the cannula position is the central vein, the type of the extracorporeal circulation cannula to be selected is obtained. When the central vein is the superior vena cava, the types of the extracorporeal circulation cannula to be selected include metal head right-angle type, plastic head right-angle type, and straight head type; when the central vein is the inferior vena cava, the types of the extracorporeal circulation cannula to be selected include metal head right-angle type and straight head type;

[0032] If the extracorporeal circulation cannula is of a straight type, the cannula size is directly determined as the size of the extracorporeal circulation cannula;

[0033] If the type of the extracorporeal circulation cannula is a metal head right-angle type or a plastic head right-angle type, the corresponding preset value is determined according to the type of the extracorporeal circulation cannula;

[0034] The size of the extracorporeal circulation cannula is determined based on the cannula size and the preset value.

[0035] In a second aspect, the present invention provides a device for determining the size of an extracorporeal circulation cannula, which is applied to a computer device, and the device comprises:

[0036] An information acquisition module, configured to acquire an intubation position for a target object and a weight of the target object;

[0037] a formula selection module, configured to select a corresponding target formula from pre-configured calculation formulas based on the intubation position and the body weight;

[0038] A size acquisition module, configured to obtain a corresponding cannula size based on the target formula;

[0039] The size determination module is used to determine the size of the extracorporeal circulation cannula based on the cannula size.

[0040] In a third aspect, the present invention provides a computer device comprising: one or more processors, and a memory;

[0041] The memory stores computer-readable instructions, and when the computer-readable instructions are executed by the one or more processors, the steps of the method for determining the size of the extracorporeal circulation cannula as described above are performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 1 is a flow chart of a method for determining the size of an extracorporeal circulation cannula according to an embodiment of the present invention;

[0044] Figure 2 2 is a flow chart of a method for cannulating a central artery according to an embodiment of the present invention;

[0045] Figure 3 2 is a partial flow chart of a method for inserting a cannula at a central vein according to an embodiment of the present invention;

[0046] Figure 4 2 is a structural block diagram of a device for determining the size of an extracorporeal circulation cannula according to an embodiment of the present invention;

[0047] Figure 5 2 is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0049] According to an embodiment of the present invention, an embodiment of a method for determining the size of an extracorporeal circulation cannula is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer device such as a set of executable computer instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0050] In this embodiment, a method for determining the size of an extracorporeal circulation cannula is provided, which can be used on the aforementioned computer devices, such as mobile phones, tablet computers, and computers, and of course other computer devices can also be used. The user of the computer device can be, for example, a medical staff performing intubation (hereinafter referred to as "medical staff"), but is of course not limited to medical staff. In the embodiment of the present invention, the user of the computer device is described as a medical staff. Figure 1 FIG. 1 is a flow chart of a method for determining the size of an extracorporeal circulation cannula according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0051] Step S101 : obtaining the intubation position and weight of the target object.

[0052] Specifically, in this embodiment, the target object is a patient who requires extracorporeal circulation intubation, and the medical staff inputs the intubation position and the weight of the target object into the computer device, and the specific method of obtaining the weight of the target object is not limited here.

[0053] Step S102 , selecting a corresponding target formula from pre-configured calculation formulas based on the intubation position and weight;

[0054] Specifically, the computer device stores a calculation formula for the extracorporeal circulation cannula size, that is, the calculation formula is pre-configured. The computer device can select a target formula based on the cannula position and weight of the target object input by medical staff into the computer device.

[0055] Step S103: Obtain the corresponding cannula size based on the target formula.

[0056] Specifically, the computer device enters the target subject's weight into the target formula to obtain the corresponding cannula size. In this embodiment, the cannula size can be circumference. As an alternative embodiment, the cannula size can be diameter. Alternatively, the cannula size can be limited to another dimension, such as radius.

[0057] Step S104: Determine the size of the extracorporeal circulation cannula based on the cannula size.

[0058] Specifically, the size of the extracorporeal circulation cannula can be determined by the cannula size, and then the computer device displays the size of the extracorporeal circulation cannula, so that medical staff can know the selection of the extracorporeal circulation cannula size directly through the computer device.

[0059] The method for determining the size of the extracorporeal circulation cannula provided in this embodiment is that after the medical staff inputs the cannula position and weight of the target object into the computer device, the computer device can display the size of the extracorporeal circulation cannula. The medical staff does not need to perform a table lookup operation, thereby avoiding the occurrence of table lookup errors due to time constraints, thereby achieving the technical effect of improving the simplicity and accuracy of the method for determining the size of the extracorporeal circulation cannula.

[0060] Specifically, the method for determining the size of the extracorporeal circulation cannula provided in this embodiment can also avoid the deviation in the determination of the size of the extracorporeal circulation cannula caused by looking up tables and looking at serial numbers in related technologies, thereby achieving the technical effect of improving the accuracy of determining the size of the extracorporeal circulation cannula.

[0061] Furthermore, in the method for determining extracorporeal circulation cannula size provided in this embodiment, the cannula location is either the central artery or the central vein. By limiting the cannula location to two, the method of this embodiment can determine the cannula size for both the central artery and the central vein, thereby increasing the diversity of methods for determining extracorporeal circulation cannula size and thereby enhancing the practicality of the method.

[0062] Furthermore, the method for determining extracorporeal circulation cannula size provided in this embodiment, when the cannula is located in the central artery, includes cannula types including integrated arterial cannula, elbow-tipped arterial cannula, and straight-tipped arterial cannula. This allows for additional and more refined types of central arterial cannula types, making it easier for medical personnel to select the right type based on their needs.

[0063] Preferably, when the cannula is located in the central artery, while determining the size of the extracorporeal circulation cannula, the computer device can also output the specific type of cannula, so that medical staff can not only obtain the cannula size corresponding to the weight, but also know the type of cannula corresponding to the weight, thereby achieving the technical effect of improving the ease of use of the method for determining the size of the extracorporeal circulation cannula.

[0064] Of course, in other embodiments, when the cannula is located in the central artery, the cannula location may be adjusted based on the design of the extracorporeal circulation cannula sizing method. Alternatively, the medical staff may input the cannula type into the computer device, whereupon the computer device calculates the cannula size based on the cannula location, weight, and cannula type, and determines the size of the extracorporeal circulation cannula based on the cannula size.

[0065] At the same time, when the cannulation location is the central artery, in this case, based on the cannulation location and weight, the corresponding target formula is selected from the pre-configured calculation formulas, including:

[0066] When the cannulation position is the central artery and X≤30kg, the first formula is selected as the target formula, which is:

[0067] When the cannulation position is the central artery and 30kg<X≤50kg, the second formula is selected as the target formula, which is:

[0068] When the cannulation position is the central artery and 50 kg < X < 60 kg, the second and third formulas are selected as the target formulas. The third formula is:

[0069] When the cannulation position is the central artery and X ≥ 60 kg, the fourth formula is selected as the target formula, and the fourth formula is: L = 24 mm;

[0070] Where X is body weight, L is cannula size,

[0071] For example, when the medical staff inputs the cannula location as central artery and X=3kg into the computer device, the computer selects the first formula as the target formula based on the cannula location and weight, and calculates the corresponding cannula size L as 6mm according to the first formula. The specific process is as follows: The type of the central arterial cannula of this size is specifically an integrated arterial cannula. At this time, the result output by the computer device is: size of the extracorporeal circulation cannula = 6 mm, integrated arterial cannula.

[0072] In other embodiments, when the medical staff is required to select the cannula type, the medical staff not only inputs the cannula location as central artery, X=3 kg, but also inputs the cannula type as integrated arterial cannula. However, if the medical staff is unaware that elbow-tipped and straight-tipped arterial cannulae are only suitable for patients weighing 30 kg or more, that is, if the medical staff inputs the cannula location as central artery, X=3 kg, and the cannula type as elbow-tipped arterial cannula, the computer will output "null."

[0073] In addition, the method for determining the size of the extracorporeal circulation cannula provided in this embodiment, when the cannula position is the central vein, the cannula position of the central vein includes the superior vena cava and the inferior vena cava. Among them, the types of cannula for the superior vena cava include metal head right angle type, plastic head right angle type and straight head type. The types of cannula for the inferior vena cava include metal head right angle type and straight head type. Based on this, the types of central venous cannula can be increased, and the central venous cannula can be refined to facilitate medical staff to select the type of central venous cannula according to their needs. Based on the cannula position and weight, the corresponding target formula is selected from the pre-configured calculation formula, including:

[0074] When the cannula is located in the central vein and X is less than 20 kg, the fifth formula is selected as the target formula. The fifth formula is:

[0075] When the cannula is located in the central vein and 20 kg ≤ X ≤ 60 kg, the sixth formula is selected as the target formula. The sixth formula is:

[0076] When the cannulation site is the central vein and X>60kg, the seventh formula is selected as the target formula, which is: L=34mm or L=36mm;

[0077] Where X is body weight, L is cannula size,

[0078] At the same time, when the cannula is located in the central vein, Figure 3 As shown, based on the cannula size, determine the size of the extracorporeal circulation cannula, including:

[0079] Step S1041: Determine whether the target subject's weight exceeds 60 kg. If so, and the cannula is located at the superior vena cava, the cannula size L=34 mm; if so, and the cannula is located at the inferior vena cava, the cannula size L=36 mm.

[0080] If not, the preset adjustment value is added to the target formula to obtain the cannula size.

[0081] Among them, by setting the preset adjustment value, the computer equipment can adjust the size of the preset adjustment value according to the specific cannula position and weight, so that the size of the extracorporeal circulation cannula obtained is more accurate, thereby achieving the technical effect of improving the accuracy of the method for determining the size of the extracorporeal circulation cannula.

[0082] Specifically, the above-mentioned preset adjustment values ​​have been preset in the computer device. After the medical staff inputs the intubation position and weight into the computer device, the computer device directly generates the preset adjustment values ​​based on the intubation position and weight, and obtains the corresponding intubation size according to the target formula.

[0083] Furthermore, in this step, as an optional embodiment, when the cannula position is the central vein, the type of extracorporeal circulation cannula to be selected is obtained. When the central vein is the superior vena cava, the types of extracorporeal circulation cannula to be selected include metal head right-angle type, plastic head right-angle type and straight head type; when the central vein is the inferior vena cava, the types of extracorporeal circulation cannula to be selected include metal head right-angle type and straight head type.

[0084] The medical professional inputs the type of extracorporeal circulation cannula into the computer device. This step can be performed simultaneously with the acquisition of the target patient's cannula location and weight in step S101. Inputting the cannula requires the medical professional to click the button indicating the central vein as the cannula location. Two windows, one for the superior vena cava and the other for the inferior vena cava, appear on the computer device. The medical professional can then select either the superior vena cava or the inferior vena cava, or select both windows simultaneously, and then click OK to continue selecting the type of extracorporeal circulation cannula.

[0085] Furthermore, when the medical staff clicks on the window of the superior vena cava and the weight of the target object entered by the medical staff does not exceed 3kg, the pop-up window on the computer device will only display the metal head right-angle category. When the medical staff clicks on the window of the superior vena cava and the weight of the target object entered by the medical staff exceeds 3kg but does not exceed 40kg, the pop-up window on the computer device will only display the metal head right-angle category and the straight head category. When the medical staff clicks on the window of the superior vena cava and the weight of the target object entered by the medical staff exceeds 40kg, the pop-up window on the computer device will only display the metal head right-angle category, plastic head right-angle category, and straight head category for the medical staff to choose from. When the medical staff clicks on the window of the inferior vena cava and the weight of the target object entered by the medical staff does not exceed 30kg, the pop-up window on the computer device will only display the straight head category.

[0086] Because when the target object's weight does not exceed 3kg and the cannula is located in the superior vena cava, there are no corresponding plastic head right-angle and straight head extracorporeal circulation cannulas; because when the target object's weight exceeds 3kg and does not exceed 40kg and the cannula is located in the superior vena cava, there are no corresponding plastic head right-angle and straight head extracorporeal circulation cannulas; and because when the target object's weight exceeds 30kg and the cannula is located in the inferior vena cava, there are no corresponding extracorporeal circulation cannulas. Therefore, there are no corresponding extracorporeal circulation cannulas and they are not displayed.

[0087] The computer device determines the preset adjustment value based on the weight and cannula position input by the medical staff. At the same time, the computer device determines the preset value based on the weight, cannula position and the type of extracorporeal circulation cannula selected by the medical staff.

[0088] As a convertible embodiment, it is also possible that the specific cannula location is not selected as the superior vena cava or the inferior vena cava, and the computer device directly outputs the various sizes of the extracorporeal circulation cannula in the superior vena cava and the various sizes of the extracorporeal circulation cannula in the inferior vena cava corresponding to the weight input by the medical staff. If a certain type of extracorporeal circulation cannula does not have this size under this weight, the size data of this type of extracorporeal circulation cannula is not output, or the size data output for this type of extracorporeal circulation cannula is: empty.

[0089] In a specific embodiment, if the type of the extracorporeal circulation cannula is a straight-head type, the cannula size is directly determined as the size of the extracorporeal circulation cannula.

[0090] Specifically, when the cannula position is the superior vena cava, the target weight X entered by the medical staff falls into X≤3kg, and the preset adjustment value is -2; when the target weight X entered by the medical staff falls into 3kg<X<5kg, the preset adjustment value is 0; when the target weight X entered by the medical staff falls into 5kg≤X<10kg, the preset adjustment value is 0; when the target weight X entered by the medical staff falls into 10kg≤X≤14kg, the preset adjustment values ​​are 0 and +2, that is, the cannula size is 18mm and 20mm; when the target weight X entered by the medical staff falls into 15kg≤X≤19kg, the preset adjustment value is +2; when the target weight X entered by the medical staff falls into 20kg≤X≤ When X ≤ 24 kg, the preset adjustment value is 0. When the target weight X entered by the medical staff falls within the range of 25 kg ≤ X < 30 kg, the preset adjustment value is +2. When the target weight X entered by the medical staff falls within the range of X = 30 kg, the preset adjustment value is 0. When the target weight X entered by the medical staff falls within the range of 31 kg ≤ X < 40 kg, the preset adjustment value is +2. When the target weight X entered by the medical staff falls within the range of 40 kg ≤ X < 50 kg, the preset adjustment value is +2. When the target weight X entered by the medical staff falls within the range of 50 kg ≤ X < 60 kg, the preset adjustment value is +2. When the target weight X entered by the medical staff falls within the range of X = 60 kg, the preset adjustment value is 0. Since L is a fixed value when X > 60 kg, no preset adjustment value is required, and the cannula size L = 34 mm.

[0091] Furthermore, when the intubation location is the inferior vena cava, the target weight X entered by the medical staff falls into X≤3kg, and the preset adjustment value is 0; when the target weight X entered by the medical staff falls into 3kg<X<5kg, the preset adjustment value is +2; when the target weight X entered by the medical staff falls into 5kg≤X<10kg, the preset adjustment value is +2; when the target weight X entered by the medical staff falls into 10kg≤X≤14kg, the preset adjustment values ​​are +2 and +4, that is, the intubation size is 20mm and 22mm; when the target weight X entered by the medical staff falls into 15kg≤X≤19kg, the preset adjustment value is +4; when the target weight X entered by the medical staff falls into 20kg≤X≤ When X ≤ 24 kg, the preset adjustment value is +2. When the target weight X entered by the medical staff falls within the range of 25 kg ≤ X < 30 kg, the preset adjustment value is +4. When the target weight X entered by the medical staff falls within the range of X = 30 kg, the preset adjustment value is +2. When the target weight X entered by the medical staff falls within the range of 31 kg ≤ X < 40 kg, the preset adjustment value is +4. When the target weight X entered by the medical staff falls within the range of 40 kg ≤ X < 50 kg, the preset adjustment value is +4. When the target weight X entered by the medical staff falls within the range of 50 kg ≤ X < 60 kg, the preset adjustment value is +4. When the target weight X entered by the medical staff falls within the range of X = 60 kg, the preset adjustment value is +2. Since L is a fixed value when X > 60 kg, no preset adjustment value is required, and the cannula size L = 36 mm.

[0092] In a specific embodiment, if the type of the extracorporeal circulation cannula is a metal head right-angle type or a plastic head right-angle type, the corresponding preset value is determined according to the type of the extracorporeal circulation cannula.

[0093] Specifically, when the cannula is at the superior vena cava and the type of the extracorporeal circulation cannula is a metal head right-angle type, the target weight X entered by the medical staff falls within X≤3kg, and the preset value is -2; when the target weight X entered by the medical staff falls within 3kg<X<5kg, the preset values ​​are -2 and -4; when the target weight X entered by the medical staff falls within 5kg≤X<10kg, the preset values ​​are -2 and -4; when the target weight X entered by the medical staff falls within 10kg≤X≤14kg, the preset values ​​are -4 and -6, that is, when the cannula size is 18mm, the preset value is -4, and when the cannula size is 20mm, the preset value is -6; when the target weight X entered by the medical staff falls within 15kg≤X When the target weight X entered by the medical staff falls within the range of 20kg≤X≤24kg, the preset values ​​are -6 and -8; when the target weight X entered by the medical staff falls within the range of 25kg≤X≤30kg, the preset value is -8; when the target weight X entered by the medical staff falls within the range of 31kg≤X<40kg, the preset values ​​are -8 and -10; when the target weight X entered by the medical staff falls within the range of 40kg≤X<50kg, the preset value is -8; when the target weight X entered by the medical staff falls within the range of 50kg≤X≤60kg, the preset value is -8; when the target weight X entered by the medical staff falls within the range of X>60kg, the preset value is -8.

[0094] When the cannula is located in the superior vena cava and the extracorporeal circulation cannula is a plastic-tipped, right-angle cannula, and the target weight X entered by the medical staff falls within the range of 40kg ≤ X < 50kg, the preset values ​​are -4 and -2. If the target weight X entered by the medical staff falls within the range of 50kg ≤ X ≤ 60kg, the preset values ​​are -4 and -2. If the target weight X entered by the medical staff falls within the range of X > 60kg, the preset values ​​are -4 and -2. Therefore, when the weight falls within the range of X < 40kg, there is no corresponding plastic-tipped, right-angle cannula, so the preset value is not limited.

[0095] When the cannula is located in the inferior vena cava and the type of extracorporeal circulation cannula is a metal-headed right-angle type, if the target weight X entered by the medical staff falls within X≤3kg, the preset value is -2; if the target weight X entered by the medical staff falls within 3kg<X<5kg, the preset values ​​are -2 and -4; if the target weight X entered by the medical staff falls within 5kg≤X<10kg, the preset values ​​are -2 and -4; if the target weight X entered by the medical staff falls within 10kg≤X≤14kg When the target weight X entered by the medical staff falls within the range of 15kg≤X≤19kg, the preset value is -6; when the target weight X entered by the medical staff falls within the range of 20kg≤X≤24kg, the preset values ​​are -6 and -8; when the target weight X entered by the medical staff falls within the range of 25kg≤X≤30kg, the preset value is -8.

[0096] Step S1042: Determine the size of the extracorporeal circulation cannula based on the cannula size and a preset value.

[0097] Specifically, the computer device calculates and obtains the size of the extracorporeal circulation cannula based on the cannula size, the preset value, and the preset adjustment value, and then the computer device outputs the size of the extracorporeal circulation cannula.

[0098] The following is a specific embodiment of the method for determining the size of the extracorporeal circulation cannula:

[0099] Example 1

[0100] This embodiment provides a specific method for determining the size of an extracorporeal circulation cannula when the weight X of the patient with central arterial cannula is within various ranges.

[0101] Specifically, in step S101 , the medical staff inputs the target object's intubation position and the target object's weight into a computer device, that is, the target object's intubation position is the central artery.

[0102] Step S102: When the target weight X input by the medical staff falls within the range of X≤3 kg, the computer device selects a pre-configured first formula as the target formula.

[0103] Step S103: Based on the first formula, the corresponding cannula size is obtained as 6 mm.

[0104] Step S104: Determine the size of the extracorporeal circulation cannula as 6 mm based on the cannula size. Since the elbow arterial cannula and the straight arterial cannula do not have a size of 6 mm, the final result output by the computer device is: extracorporeal circulation cannula size = 6 mm, integrated arterial cannula.

[0105] Furthermore, if Figure 2 As shown, based on the cannula size, determining the size of the extracorporeal circulation cannula includes:

[0106] Step S1041', selecting a target size closest to the cannula size from a plurality of candidate sizes; the candidate size is the size of the extracorporeal circulation cannula to be selected;

[0107] Step S1042 ′: determine the target size as the size of the extracorporeal circulation cannula.

[0108] The size of the extracorporeal circulation cannula to be selected refers to the size of the extracorporeal circulation cannula. Even if the corresponding cannula size is obtained based on the target formula, but the extracorporeal circulation cannula does not have this cannula size, then this cannula size cannot be directly output as the size of the extracorporeal circulation cannula. In this case, the size of the extracorporeal circulation cannula closest to the cannula size can be selected.

[0109] The following determines the size of the extracorporeal circulation cannula. The only difference is the selection of weight and its corresponding target formula. Therefore, the steps will not be repeated. Only the weight and its corresponding target formula, as well as the output of the extracorporeal circulation cannula size, will be described:

[0110] When the target weight X input by the medical staff falls within the range of 3kg<X≤5kg, the computer device selects the first formula as the target formula. Since the elbow arterial cannula and the straight arterial cannula do not have sizes of 6mm and 8mm, the final result output by the computer device is: size of the extracorporeal circulation cannula = 6mm, integrated arterial cannula; size of the extracorporeal circulation cannula = 8mm, integrated arterial cannula.

[0111] When the target weight X input by the medical staff falls within the range of 5kg<X≤10kg, the computer device selects the first formula as the target formula. Since the elbow arterial cannula and the straight arterial cannula do not have sizes of 8mm and 10mm, the final result output by the computer device is: size of the extracorporeal circulation cannula = 8mm, integrated arterial cannula; size of the extracorporeal circulation cannula = 10mm, integrated arterial cannula.

[0112] When the target weight X input by the medical staff falls within the range of 10kg<X≤15kg, the computer device selects the first formula as the target formula. Since the elbow arterial cannula and the straight arterial cannula do not have sizes of 10mm and 12mm, the final result output by the computer device is: size of the extracorporeal circulation cannula = 10mm, integrated arterial cannula; size of the extracorporeal circulation cannula = 12mm, integrated arterial cannula.

[0113] When the target weight X input by the medical staff falls within the range of 15kg<X≤20kg, the computer device selects the first formula as the target formula. Since the elbow arterial cannula and the straight arterial cannula do not have sizes of 12mm and 14mm, the final result output by the computer device is: size of the extracorporeal circulation cannula = 12mm, integrated arterial cannula; size of the extracorporeal circulation cannula = 14mm, integrated arterial cannula.

[0114] When the target weight X input by the medical staff falls within the range of 20kg<X≤25kg, the computer device selects the first formula as the target formula. Since the elbow arterial cannula and the straight arterial cannula do not have sizes of 14mm and 16mm, the final result output by the computer device is: size of the extracorporeal circulation cannula = 14mm, integrated arterial cannula; size of the extracorporeal circulation cannula = 16mm, integrated arterial cannula.

[0115] When the target weight X entered by the medical staff falls within the range of 25 kg < X ≤ 30 kg, the computer selects the first formula as the target formula. Since curved arterial cannulas are not available in 16 mm and 18 mm sizes, and straight arterial cannulas are not available in 16 mm sizes, the computer outputs the following: Extracorporeal circulation cannula size = 16 mm, integrated arterial cannula; Extracorporeal circulation cannula size = 18 mm, integrated arterial cannula; Extracorporeal circulation cannula size = 18 mm, straight arterial cannula.

[0116] When the target weight X input by the medical staff falls within the range of 30 kg < X ≤ 40 kg, the computer device selects the second formula as the target formula. Although the cannula sizes at this time are 18 mm and 20 mm, since the size of the integrated arterial cannula is not 20 mm, the size of the elbow arterial cannula is not 18 mm, and the size of the straight arterial cannula is not 20 mm, the final output of the computer device is: the size of the extracorporeal circulation cannula = 18 mm, the integrated arterial cannula; the size of the extracorporeal circulation cannula = 20 mm, the elbow arterial cannula; the size of the extracorporeal circulation cannula = 18 mm, the straight arterial cannula.

[0117] When the target weight X entered by the medical staff falls within the range of 40kg < X ≤ 50kg, the computer selects the second formula as the target formula. Although the cannula sizes are 20mm and 22mm, since neither the integrated arterial cannula nor the straight-tipped arterial cannula have 20mm or 22mm, the straight-tipped arterial cannula selects the closest size, 21mm, as the extracorporeal circulation cannula. Therefore, the computer outputs the following: Extracorporeal circulation cannula size = 20mm, elbow-tipped arterial cannula; Extracorporeal circulation cannula size = 22mm, elbow-tipped arterial cannula; Extracorporeal circulation cannula size = 21mm, straight-tipped arterial cannula.

[0118] When the target weight X entered by the medical staff falls within the range of 50kg < X < 60kg, the computer selects the second and third formulas as the target formulas. Although the cannula sizes are 22mm and 24mm, since the integrated arterial cannula does not have 20mm and 22mm sizes, and the straight arterial cannula has a size of 24mm but not 22mm, the straight arterial cannula selects the closest size of 21mm as the extracorporeal circulation cannula. Therefore, the computer outputs the following: Extracorporeal circulation cannula size = 22mm, elbow arterial cannula; Extracorporeal circulation cannula size = 24mm, elbow arterial cannula; Extracorporeal circulation cannula size = 21mm, straight arterial cannula; Extracorporeal circulation cannula size = 24mm, straight arterial cannula.

[0119] When the target weight X entered by the medical staff falls within the range of X ≥ 60 kg, the computer device selects the fourth formula as the target formula. Since the size of the integrated arterial cannula is not 24 mm, the final output of the computer device is: Extracorporeal circulation cannula size = 24 mm, curved arterial cannula; Extracorporeal circulation cannula size = 24 mm, straight arterial cannula.

[0120] Example 2

[0121] This embodiment provides a specific method for determining the size of an extracorporeal circulation cannula when the weight X of a person having a central venous cannula is within various ranges.

[0122] Specifically, in step S101, a medical professional inputs the target patient's cannula location and weight into a computer device, indicating that the target patient's cannula location is the central vein. Simultaneously, in this step, the type of extracorporeal circulation cannula can be selected. In this case, the medical professional can input into the computer device the cannula locations of the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava as a metal-tipped right-angle cannula, and the types of the extracorporeal circulation cannula for the inferior vena cava as a metal-tipped right-angle cannula and a straight cannula.

[0123] Step S102: When the target weight X input by the medical staff falls within the range of X≤3 kg, the computer device selects the pre-configured fifth formula as the target formula.

[0124] Step S103: Based on the fifth formula, the corresponding cannula size is obtained as 14 mm.

[0125] Step S1041: The computer device determines a preset adjustment and a preset value according to the cannula position and the type of extracorporeal circulation cannula selected in step S101.

[0126] Step S1042: Determine the size of the extracorporeal circulation cannula based on the cannula size and the preset value. Since the straight-tip type (superior vena cava) does not have a 12mm size, the final output of the computer device is: Extracorporeal circulation cannula size = 10mm, metal-tip right-angle type (superior vena cava). Extracorporeal circulation cannula size = 12mm, metal-tip right-angle type (inferior vena cava). Extracorporeal circulation cannula size = 14mm, straight-tip type (inferior vena cava).

[0127] The following determination of the extracorporeal circulation cannula size differs only in the selection of weight, cannula position, cannula type, and the corresponding target formula. Therefore, the steps will not be repeated here. Only weight, cannula position, cannula type, and the corresponding target formula, as well as the output of the extracorporeal circulation cannula size, will be described:

[0128] When the cannula locations input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the types of the extracorporeal circulation cannula for the inferior vena cava are the metal head right-angle type and the straight type, and at the same time the weight X corresponding to the input target falls within the range of 3kg<X<5kg, the computer device selects the fifth formula as the target formula, and finally the result output by the computer device is: The size of the extracorporeal circulation cannula = 10mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 12mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 14mm, straight type (superior vena cava). The size of the extracorporeal circulation cannula = 12mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 14mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 16mm, straight type (inferior vena cava).

[0129] When the cannula locations input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the types of the extracorporeal circulation cannula for the inferior vena cava are the metal head right-angle type and the straight type, and at the same time the weight X corresponding to the input target falls within the range of 5kg≤X<10kg, the computer device selects the fifth formula as the target formula, and finally the result output by the computer device is: The size of the extracorporeal circulation cannula = 12mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 14mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 16mm, straight type (superior vena cava). The size of the extracorporeal circulation cannula = 14mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 16mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 18mm, straight type (inferior vena cava).

[0130] When the cannula locations input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the types of the extracorporeal circulation cannula for the inferior vena cava are the metal head right-angle type and the straight type, and at the same time, the weight X corresponding to the input target falls within the range of 10kg≤X≤14kg, the computer device selects the fifth formula as the target formula, and finally the result output by the computer device is: Size of the extracorporeal circulation cannula = 14mm, metal head right-angle type (superior vena cava). Size of the extracorporeal circulation cannula = 18mm, straight type (superior vena cava). Size of the extracorporeal circulation cannula = 20mm, straight type (superior vena cava). Size of the extracorporeal circulation cannula = 16mm, metal head right-angle type (inferior vena cava). Size of the extracorporeal circulation cannula = 20mm, straight type (inferior vena cava). Size of the extracorporeal circulation cannula = 22mm, straight type (inferior vena cava). That is, when the size of the extracorporeal circulation cannula = 18 mm, the preset value is -4; when the size of the extracorporeal circulation cannula = 20 mm, the preset value is -6; when the size of the extracorporeal circulation cannula = 20 mm, the preset value is -4; when the size of the extracorporeal circulation cannula = 22 mm, the preset value is -6.

[0131] When the cannula locations input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the types of the extracorporeal circulation cannula for the inferior vena cava are the metal head right-angle type and the straight type, and at the same time, the weight X corresponding to the input target falls within the range of 15kg≤X≤19kg, the computer device selects the fifth formula as the target formula, and finally the result output by the computer device is: the size of the extracorporeal circulation cannula = 16mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 22mm, straight type (superior vena cava). The size of the extracorporeal circulation cannula = 18mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 24mm, straight type (inferior vena cava).

[0132] When the cannula locations input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the types of the extracorporeal circulation cannula for the inferior vena cava are the metal head right-angle type and the straight type, and at the same time the weight X corresponding to the input target falls within the range of 20kg≤X≤24kg, the computer device selects the sixth formula as the target formula, and finally the result output by the computer device is: the size of the extracorporeal circulation cannula = 16mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 18mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 24mm, straight type (superior vena cava). The size of the extracorporeal circulation cannula = 18mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 20mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 26mm, straight type (inferior vena cava).

[0133] When the cannula positions input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the types of the extracorporeal circulation cannula for the inferior vena cava are the metal head right-angle type and the straight type, and at the same time the weight X corresponding to the input target falls within the range of 25kg≤X≤30kg, the computer device selects the sixth formula as the target formula, and finally the result output by the computer device is: the size of the extracorporeal circulation cannula = 18mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 26mm, straight type (superior vena cava). The size of the extracorporeal circulation cannula = 20mm, metal head right-angle type (inferior vena cava). The size of the extracorporeal circulation cannula = 28mm, straight type (inferior vena cava).

[0134] When the cannula locations input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type and the straight type, and the type of the extracorporeal circulation cannula for the inferior vena cava is the straight type, and at the same time, the weight X corresponding to the input target falls within the range of 31 kg ≤ X < 40 kg, the computer device selects the sixth formula as the target formula, and finally the result output by the computer device is: Size of the extracorporeal circulation cannula = 18 mm, metal head right-angle type (superior vena cava). Size of the extracorporeal circulation cannula = 20 mm, metal head right-angle type (superior vena cava). Size of the extracorporeal circulation cannula = 28 mm, straight type (superior vena cava). Size of the extracorporeal circulation cannula = 30 mm, straight type (inferior vena cava).

[0135] When the cannula positions input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type, the plastic head right-angle type, and the straight head type, and the type of the extracorporeal circulation cannula for the inferior vena cava is the straight head type, and at the same time, the weight X corresponding to the input target falls within the range of 40kg≤X<50kg, the computer device selects the sixth formula as the target formula, and finally the result output by the computer device is: the size of the extracorporeal circulation cannula = 22mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 26mm, plastic head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 28mm, plastic head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 30mm, straight head type (superior vena cava). The size of the extracorporeal circulation cannula = 32mm, straight head type (inferior vena cava).

[0136] When the cannula positions input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type, the plastic head right-angle type, and the straight head type, and the type of the extracorporeal circulation cannula for the inferior vena cava is the straight head type, and at the same time, the weight X corresponding to the input target falls within the range of 50kg≤X≤60kg, the computer device selects the sixth formula as the target formula, and finally the result output by the computer device is: the size of the extracorporeal circulation cannula = 24mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 28mm, plastic head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 30mm, plastic head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 32mm, straight head type (superior vena cava). The size of the extracorporeal circulation cannula = 34mm, straight head type (inferior vena cava).

[0137] When the cannula positions input by the medical staff are the superior vena cava and the inferior vena cava, and the types of the extracorporeal circulation cannula for the superior vena cava are the metal head right-angle type, the plastic head right-angle type, and the straight head type, and the type of the extracorporeal circulation cannula for the inferior vena cava is the straight head type, and at the same time, the weight X corresponding to the input target falls within the range of X>60kg, the computer device selects the seventh formula as the target formula, and finally the result output by the computer device is: the size of the extracorporeal circulation cannula = 26mm, metal head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 30mm, plastic head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 32mm, plastic head right-angle type (superior vena cava). The size of the extracorporeal circulation cannula = 34mm, straight head type (superior vena cava). The size of the extracorporeal circulation cannula = 36mm, straight head type (inferior vena cava).

[0138] This embodiment also provides a device for determining the size of an extracorporeal circulation cannula. This device is used to implement the above-mentioned embodiments and preferred embodiments, and the details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0139] This embodiment provides a device for determining the size of an extracorporeal circulation cannula, such as Figure 4 Shown, including:

[0140] An information acquisition module 401 is used to obtain the intubation position and weight of a target object;

[0141] A formula selection module 402 is configured to select a corresponding target formula from pre-configured calculation formulas based on the intubation position and weight;

[0142] A size acquisition module 403 is used to obtain the corresponding cannula size based on the target formula;

[0143] The size determination module 404 is configured to determine the size of the extracorporeal circulation cannula based on the cannula size.

[0144] In some optional embodiments, information acquisition module 401 is configured to acquire the type of extracorporeal circulation cannula. When the central vein is the superior vena cava, the types of extracorporeal circulation cannula to be selected include metal-head right-angle type, plastic-head right-angle type, and straight-head type. When the central vein is the inferior vena cava, the types of extracorporeal circulation cannula to be selected include metal-head right-angle type and straight-head type.

[0145] The embodiment of the present invention also provides a computer device having the above Figure 4 The device for determining the size of the extracorporeal circulation cannula is shown.

[0146] See also Figure 5 , Figure 5 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 5 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 5 A processor 10 is taken as an example.

[0147] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0148] The memory 20 stores instructions that can be executed by at least one processor 10, so as to enable at least one processor 10 to execute the method shown in the above embodiment.

[0149] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0150] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0151] The computer device further includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 5 The bus connection is taken as an example.

[0152] The input device 30 can receive input digital or character information and generate key signal input related to user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touch pad, an indicator stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), and a tactile feedback device (e.g., a vibration motor). The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display, and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0153] The computer device further includes a communication interface for the computer device to communicate with other devices or a communication network.

[0154] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for determining the size of an extracorporeal circulation cannula, characterized in that: Applied to a computer device, the method comprises: obtaining a cannula position for a target subject and a weight of the target subject; Selecting a corresponding target formula from pre-configured calculation formulas based on the intubation position and the body weight; Based on the target formula, a corresponding cannula size is obtained; Based on the cannula size, the size of the extracorporeal circulation cannula is determined.

2. The method for determining the size of an extracorporeal circulation cannula according to claim 1, wherein: The cannulation position is the central artery or central vein.

3. The method for determining the size of an extracorporeal circulation cannula according to claim 2, wherein: The method of selecting a corresponding target formula from a pre-configured calculation formula based on the intubation position and the body weight includes: When the cannula is located at the central artery and X≤30 kg, the first formula is selected as the target formula, and the first formula is: When the cannulation position is the central artery and 30 kg < X ≤ 50 kg, the second formula is selected as the target formula, and the second formula is: When the cannula is located at the central artery and 50 kg < X < 60 kg, the second and third formulas are selected as the target formulas, and the third formula is: When the cannulation position is the central artery and X≥60 kg, the fourth formula is selected as the target formula, and the fourth formula is: L=24 mm; Wherein, X is body weight and L is the cannula size.

4. The method for determining the size of an extracorporeal circulation cannula according to claim 3, wherein: Determining the size of the extracorporeal circulation cannula based on the cannula size includes: Selecting a target size closest to the cannula size from a plurality of candidate sizes; the candidate size is the size of the extracorporeal circulation cannula to be selected; The target size is determined as the size of the extracorporeal circulation cannula.

5. The method for determining the size of an extracorporeal circulation cannula according to claim 2, wherein: The method of selecting a corresponding target formula from a pre-configured calculation formula based on the intubation position and the body weight includes: When the cannula is located at the central vein and X is less than 20 kg, the fifth formula is selected as the target formula. The fifth formula is: When the cannula is located at the central vein and 20 kg ≤ X ≤ 60 kg, the sixth formula is selected as the target formula, and the sixth formula is: When the cannula is located at the central vein and X>60 kg, the seventh formula is selected as the target formula, and the seventh formula is: L=34 mm or L=36 mm; Wherein, X is body weight and L is the cannula size.

6. The method for determining the size of an extracorporeal circulation cannula according to claim 5, characterized in that: When the cannula position is a central vein, obtaining the cannula position for the target object further includes: A detailed location of a cannula is acquired for the target object, where the detailed location of the cannula includes the superior vena cava and the inferior vena cava.

7. The method for determining the size of an extracorporeal circulation cannula according to claim 6, characterized in that: Determining the size of the extracorporeal circulation cannula based on the cannula size includes: Determine whether the target subject's weight exceeds 60 kg. If so, and the cannula is located in the superior vena cava, the cannula size L=34 mm; if so, and the cannula is located in the inferior vena cava, the cannula size L=36 mm; If not, then adding a preset adjustment value to the target formula to obtain the cannula size; The size of the extracorporeal circulation cannula is determined based on the cannula size.

8. The method for determining the size of an extracorporeal circulation cannula according to claim 6 or 7, characterized in that: Determining the size of the extracorporeal circulation cannula based on the cannula size includes: When the cannula position is the central vein, the type of the extracorporeal circulation cannula to be selected is obtained. When the central vein is the superior vena cava, the types of the extracorporeal circulation cannula to be selected include metal head right-angle type, plastic head right-angle type, and straight head type; when the central vein is the inferior vena cava, the types of the extracorporeal circulation cannula to be selected include metal head right-angle type and straight head type; If the extracorporeal circulation cannula is of a straight type, the cannula size is directly determined as the size of the extracorporeal circulation cannula; If the type of the extracorporeal circulation cannula is a metal head right-angle type or a plastic head right-angle type, the corresponding preset value is determined according to the type of the extracorporeal circulation cannula; The size of the extracorporeal circulation cannula is determined based on the cannula size and the preset value.

9. A device for determining the size of an extracorporeal circulation cannula, characterized in that: Applied to computer equipment, the device comprises: An information acquisition module, configured to acquire an intubation position for a target object and a weight of the target object; a formula selection module, configured to select a corresponding target formula from pre-configured calculation formulas based on the intubation position and the body weight; A size acquisition module, configured to obtain a corresponding cannula size based on the target formula; The size determination module is used to determine the size of the extracorporeal circulation cannula based on the cannula size.

10. A computer device, characterized in that: include: one or more processors, and memory; The memory stores computer-readable instructions, which, when executed by the one or more processors, perform the steps of the method for determining the size of the extracorporeal circulation cannula according to any one of claims 1 to 8.

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