Automatic identification method for DVT air bag

Abstract

The embodiment of the invention discloses an automatic identification method for a DVT air bag, and the method comprises the following steps: blocked air port judgment: detecting and judging whether the air port of the DVT air bag is blocked, and preliminarily identifying the type of the air bag according to the serial number of the blocked air port; and air cavity type detection: when the air port with the serial number of 1 and the air port with the serial number of 2 are not blocked, detecting the air cavity type of the air cavity communicated with the air port with the serial number of 1 so as to confirm the type of the air bag according to the air cavity type of the air cavity. According to the automatic identification method for the DVT air bag, after whether the air port of the connected DVT air bag is blocked or not is judged and the type of the DVT air bag is preliminarily identified according to the serial number of the blocked air port, the type of the air bag is confirmed according to the air cavity type of the air cavity communicated with the air port with the serial number being one, so that a chip for identifying the type of the air bag does not need to be arranged on the air bag; cost is saved, operation is convenient and simple, and accuracy is high.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device component detection, and in particular to a DVT airbag automatic identification method. Background Art

[0002] DVT (Deep Vein Thrombosis) airbags are airbags specifically used to relieve deep vein thrombosis. They are generally used in the lower limbs and consist of thigh air chambers, calf air chambers and sole air chambers. Different types of airbags are formed by combining different air chambers. Existing DVT airbags are usually disposable and are only used by a single patient. The commonly used method of DVT airbag identification is usually to equip the DVT airbag with a dedicated identification chip, which is relatively expensive. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a DVT airbag automatic identification method so as to avoid the need to carry a dedicated identification chip on the DVT airbag.

[0004] To solve the above technical problems, the objective of the present invention is achieved through the following technical solutions: providing a DVT airbag automatic identification method, comprising the following steps: blocked air port judgment: detecting and judging whether there is a blocked air port in the DVT airbag, and preliminarily identifying the type of the airbag according to the serial number of the blocked air port; air cavity type detection: when the air port with serial number one and the air port with serial number two are both not blocked, detecting the air cavity type of the air cavity connected to the air port with serial number one, so as to confirm the type of the airbag according to the air cavity type of the air cavity.

[0005] The beneficial technical effect of the present invention is that the DVT airbag automatic identification method of the present invention determines whether the air port of the connected DVT airbag is blocked and preliminarily identifies the type of the DVT airbag according to the serial number of the blocked air port, and then confirms the type of the airbag according to the air cavity type of the air cavity connected to the air port with serial number one, so that there is no need to set an identification chip for identifying the airbag type on the airbag, saving costs, and the operation is convenient and simple with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0007] Figure 1 A schematic flow chart of a DVT airbag automatic identification method provided by an embodiment of the present invention;

[0008] Figure 2A schematic diagram of the states of the air cavities and air ports corresponding to each airbag type of the DVT airbag used in the DVT airbag automatic identification method provided in an embodiment of the present invention;

[0009] Figure 3 A schematic diagram comparing the inflation time of the plantar air cavity and the thigh air cavity of the DVT air bag used in the DVT air bag automatic identification method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0011] See also Figure 1 As shown, Figure 1 A schematic flow chart of a DVT airbag automatic identification method provided by an embodiment of the present invention, wherein the DVT airbag automatic identification method comprises the following steps:

[0012] Step S11, blocked air port determination: Detect and determine whether the air port of the DVT airbag is blocked, and preliminarily identify the type of the airbag according to the sequence number of the blocked air port;

[0013] Step S12, air cavity type detection: when the air port numbered one and the air port numbered two are not blocked, the air cavity type of the air cavity connected to the air port numbered one is detected to confirm the type of the airbag according to the air cavity type of the air cavity.

[0014] The states of the air cavities and air ports corresponding to the airbag types of the DVT airbags used in the DVT airbag automatic identification method are as follows: Figure 2 As shown, the DVT airbag includes a thigh air chamber, a calf air chamber and a sole air chamber. Figure 2 The mid-thigh air cavity, calf air cavity and sole air cavity are represented by C, B and A respectively. The calf air cavity is located between the thigh air cavity and the sole air cavity. The DVT airbag includes three air ports. Figure 2 The numbers of the air ports are 1, 2 and 3 respectively, which are indicated by 1, 2 and 3 in the figure. The calf air chamber is connected with two air ports, and the air ports 2 and 3 are connected with the calf air chamber. The air port 1 can be connected with the thigh air chamber or the sole air chamber. Any of the thigh air chamber or the sole air chamber is not connected with an air port. The air chamber types of the DVT air chamber include the sole air chamber, the calf air chamber, the sole calf air chamber and the calf thigh air chamber, which correspond to Figure 2(a), (b), (c) and (d). When the air cavity connected to the air port with sequence number one is not blocked, the airbag type may be one of the plantar airbag, the plantar calf airbag or the calf-thigh airbag. Then, by judging whether the air cavity connected to the air port with sequence number two is blocked, it can be confirmed whether the airbag type is the plantar airbag. When both the air cavity connected to the air port with sequence number one and the air cavity connected to the air port with sequence number two are not blocked, the airbag type may be one of the plantar calf airbag or the calf-thigh airbag. Since the capacity of the plantar air cavity and the thigh air cavity is different, and the calf air cavity is connected to the air port with sequence number two, the capacity of the air cavity connected to the air port with sequence number one can be detected to obtain the air cavity type corresponding to the air cavity connected to the air port with sequence number one, thereby confirming the airbag type according to the corresponding air cavity type. When the airbag type is a calf airbag, the air port numbered 1 is blocked, that is, the sole air cavity is blocked and the thigh air cavity is blocked. Figure 2 As shown in (b); when the airbag type is a plantar airbag, the air port numbered two is blocked, and the calf air cavity is blocked, such as Figure 2 As shown in (a); when the airbag type is the foot calf airbag, the three air ports are all connected but the thigh air cavity is not connected to the air port, such as Figure 2 As shown in (c); when the airbag type is a calf-thigh airbag, the three air ports are all connected but the sole air cavity is not connected to the air port, such as Figure 2 As shown in (d) in the figure. The DVT airbag automatic identification method determines whether the connected DVT airbag has a blocked air port and preliminarily identifies the type of the DVT airbag according to the serial number of the blocked air port, and then confirms the type of the airbag according to the air cavity type of the air cavity connected to the air port with serial number 1, so that there is no need to set an identification chip for identifying the airbag type in the airbag, which saves costs, is convenient and simple to operate, and has high accuracy.

[0015] Preferably, in some embodiments, the calf air cavity may include two air chambers, and the air chambers may correspond to the air ports one by one, and the air chambers are respectively connected to the corresponding air ports.

[0016] Specifically, before step S11, the method further includes:

[0017] The air pump is started to inflate the air port, wherein the air pump is connected to the air port through an air pipe, so that the air pump is used to inflate the air port, thereby inflating the air cavity connected to the air port.

[0018] Specifically, in some embodiments, step S11 includes:

[0019] Inflate the air ports in sequence;

[0020] Determining whether the corresponding air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port;

[0021] Record the serial numbers of all blocked gas outlets;

[0022] When the air port numbered one is blocked, the air cavity connected to the air port numbered one is blocked, and the airbag type is identified as a calf airbag;

[0023] When the air port numbered two is blocked, the air cavity connected to the air port numbered two is blocked, and the airbag type is identified as a plantar airbag.

[0024] Of course, in other embodiments, the step S11 includes:

[0025] Inflate the air port numbered two;

[0026] Determining whether the corresponding air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port;

[0027] If yes, it is recorded that the air port with the sequence number 2 is blocked, then the air cavity connected with the air port with the sequence number 2 is blocked, and the airbag type is identified as a plantar airbag;

[0028] When the air port numbered 2 is not blocked, the air port numbered 1 is inflated;

[0029] Determining whether the corresponding air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port;

[0030] If so, it is recorded that the air port with serial number 1 is blocked, then the air cavity connected to the air port with serial number 1 is blocked, and the airbag type is identified as a calf airbag.

[0031] Specifically, the step of judging whether the air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port is:

[0032] Obtain the time it takes for the air cavity to be inflated to a preset blockage judgment air pressure, and determine whether the time is less than the preset blockage reference time. If so, determine that the corresponding air cavity is blocked and the air port connected to the air cavity is blocked; otherwise, determine that the corresponding air cavity is not blocked and the air port connected to the air cavity is not blocked.

[0033] Specifically, the step S12 includes:

[0034] Obtain the total inflation time of the air cavity connected to the air port with sequence number 1;

[0035] Obtaining the time length for the air cavity connected to the air port with serial number one to rise from a preset air cavity initial inflation state to a preset air cavity fully inflation state as the rising time length of the air cavity connected to the air port with serial number one;

[0036] Calculate the ratio of the total inflation time to the rising time of the air cavity connected to the air port with sequence number 1 as the characteristic value of the degree of change of the air cavity;

[0037] Determine whether the characteristic value of the degree of change of the air cavity is less than the preset critical characteristic value. If so, identify that the air cavity type of the air cavity connected to the air port with serial number one is a plantar air cavity, and the corresponding airbag type is a plantar calf airbag; otherwise, identify that the air cavity type of the air cavity connected to the air port with serial number one is a thigh air cavity, and the corresponding airbag type is a calf thigh airbag.

[0038] Among them, if there is a certain volume of gas inside the air cavity before the air cavity is identified, the total inflation time of the air cavity may be similar to the total inflation time required for the plantar air cavity to be inflated from a completely empty state to a fully inflated state, reducing the accuracy of identification. By calculating the characteristic value of the degree of change of the air cavity and comparing it with the preset critical characteristic value, the characteristic value of the degree of change of the air cavity can be used to make air cavity judgments, avoiding the problem of inaccurate identification caused by the presence of a certain amount of gas in the air cavity, which is conducive to improving the accuracy of air cavity identification, thereby improving the accuracy of airbag identification. The schematic diagram of the comparison of the inflation time of the plantar air cavity and the thigh air cavity of the DVT airbag is shown in Figure 3 As shown, Figure 3 In the figure, the horizontal axis is time and the vertical axis is pressure, Δt m2 Indicates the total inflation time of the plantar air cavity, Δt r2 Indicates the duration of the plantar air cavity rise, Δt m1 represents the total inflation time of the thigh air cavity, Δt r1 Indicates the rising time of the thigh air cavity.

[0039] Specifically, in this embodiment, the preset initial inflation state of the air cavity is a state in which the volume of gas in the air cavity accounts for 10% of the capacity of the air cavity, and the preset fully inflated state of the air cavity is a state in which the volume of gas in the air cavity accounts for 100% of the capacity of the air cavity.

[0040] Specifically, after the step of obtaining the total inflation time of the air cavity connected to the air port with sequence number 1, the method further includes:

[0041] When the total inflation time of the air cavity connected to the air port with the sequence number one is greater than the preset critical inflation time, determine whether the difference between the total inflation time of the air cavity connected to the air port with the sequence number one and the preset critical inflation time is greater than the preset difference value, and if so, identify that the air cavity type of the air cavity connected to the air port with the sequence number one is a thigh air cavity, and the corresponding airbag type is a calf thigh airbag;

[0042] When the total inflation time of the air cavity connected to the air port with serial number one is less than the preset critical inflation time, determine whether the difference between the preset critical inflation time and the total inflation time of the air cavity connected to the air port with serial number one is greater than the preset difference. If so, identify the air cavity type of the air cavity with serial number one as a plantar air cavity, and the corresponding airbag type is a plantar calf airbag.

[0043] Among them, the total inflation time required for the plantar air cavity to be inflated from a completely empty state to a fully inflated state is shorter than the total inflation time required for the thigh air cavity to be inflated from a completely empty state to a fully inflated state, and the type of air cavity can be determined and identified by setting a preset difference.

[0044] In summary, the DVT airbag automatic identification method of the present invention determines whether the air port of the connected DVT airbag is blocked and preliminarily identifies the type of the DVT airbag according to the serial number of the blocked air port, and then confirms the type of the airbag according to the air cavity type of the air cavity connected to the air port with serial number one. This eliminates the need to set an identification chip for identifying the airbag type in the airbag, saves costs, and is easy and simple to operate with high accuracy.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A DVT airbag automatic identification method, characterized in that: The following steps are involved: Blocked air port judgment: Detect and judge whether the air port of the DVT airbag is blocked, and preliminarily identify the type of airbag according to the sequence number of the blocked air port; Air cavity type detection: when the air port numbered one and the air port numbered two are not blocked, the air cavity type of the air cavity connected to the air port numbered one is detected to confirm the type of the airbag according to the air cavity type of the air cavity.

2. The DVT airbag automatic identification method according to claim 1, characterized in that: The step of determining the blocked air outlet also includes: Activate the air pump to fill the air port.

3. The DVT airbag automatic identification method according to claim 1, characterized in that: The steps of determining the blocked air outlet include: Inflate the air ports in sequence; Determining whether the corresponding air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port; Record the serial numbers of all blocked gas outlets; When the air port numbered one is blocked, the airbag type is identified as a calf airbag; When the air port numbered two is blocked, the airbag type is identified as a plantar airbag.

4. The DVT airbag automatic identification method according to claim 1, characterized in that: The steps of determining the blocked air outlet include: Inflate the air port numbered two; Determining whether the corresponding air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port; If yes, record that the air port numbered 2 is blocked, and identify the airbag type as a plantar airbag; When the air port numbered 2 is not blocked, the air port numbered 1 is inflated; Determining whether the corresponding air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port; If so, record that the air port with sequence number 1 is blocked, and identify the airbag type as a calf airbag.

5. The DVT airbag automatic identification method according to claim 3 or 4, characterized in that: The step of judging whether the air port is blocked according to the pre-inflation condition of the air cavity connected to the corresponding air port is: Obtain the time it takes for the air cavity to be inflated to a preset blockage judgment air pressure, and determine whether the time is less than a preset blockage reference time. If so, it is determined that the corresponding air cavity is blocked, and the air port connected to the air cavity is blocked; Otherwise, it is determined that the corresponding air cavity is not blocked and the air port connected to the air cavity is not blocked.

6. The DVT airbag automatic identification method according to claim 1, characterized in that: The step of detecting the air cavity type comprises: Obtain the total inflation time of the air cavity connected to the air port with sequence number 1; Obtaining the time length for the air cavity connected to the air port with serial number one to rise from a preset air cavity initial inflation state to a preset air cavity fully inflation state as the rising time length of the air cavity connected to the air port with serial number one; Calculate the ratio of the total inflation time to the rising time of the air cavity connected to the air port with sequence number 1 as the characteristic value of the degree of change of the air cavity; Determine whether the characteristic value of the degree of change of the air cavity is less than the preset critical characteristic value. If so, identify that the air cavity type of the air cavity connected to the air port with serial number one is a plantar air cavity, and the corresponding airbag type is a plantar calf airbag; otherwise, identify that the air cavity type of the air cavity connected to the air port with serial number one is a thigh air cavity, and the corresponding airbag type is a calf thigh airbag.

7. The DVT airbag automatic identification method according to claim 6, characterized in that: The preset initial inflation state of the air cavity is a state in which the volume of gas in the air cavity accounts for 10% of the volume of the air cavity, and the preset fully inflation state of the air cavity is a state in which the volume of gas in the air cavity accounts for 100% of the volume of the air cavity.

8. The DVT airbag automatic identification method according to claim 6, characterized in that: After the step of obtaining the total inflation time of the air cavity connected to the air port with serial number 1, the following step is further included: When the total inflation time of the air cavity connected to the air port with the sequence number one is greater than the preset critical inflation time, determine whether the difference between the total inflation time of the air cavity connected to the air port with the sequence number one and the preset critical inflation time is greater than the preset difference value, and if so, identify that the air cavity type of the air cavity connected to the air port with the sequence number one is a thigh air cavity, and the corresponding airbag type is a calf thigh airbag; When the total inflation time of the air cavity connected to the air port with serial number one is less than the preset critical inflation time, determine whether the difference between the preset critical inflation time and the total inflation time of the air cavity connected to the air port with serial number one is greater than the preset difference. If so, identify the air cavity type of the air cavity with serial number one as a plantar air cavity, and the corresponding airbag type is a plantar calf airbag.

Images