A pressure cuff

Abstract

The present invention relates to a pressure cuff, comprising a cuff body and an airway tube; an airbag, a pressure sensor and a signal processing module are arranged in the cuff body, and the signal processing module is electrically connected to the pressure sensor; the airway tube comprises an inner layer and an outer layer, and a tracheal cavity having one end connected to the airbag is formed in the inner layer; a first metal wire and a second metal wire are arranged in the outer layer; both ends of the airway tube are cut to form an incision on the outer layer, and a wiring ring is fixed at both ends of the airway tube; a wiring ring corresponds to one incision, and a first conductive block and a second conductive block are arranged in the wiring ring; the first conductive blocks of the two wiring rings are connected and conducted through the first metal wire, and the second conductive blocks of the two wiring rings are connected and conducted through the second metal wire; in the wiring ring at one end of the airway tube: the first conductive block is electrically connected to the pressure sensor, and the second conductive block is electrically connected to the signal processing module. The present invention has the characteristics of high degree of digitization, strong anti-interference ability, simple wiring structure and easy operation.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a pressure cuff. Background Art

[0002] At present, with the development of digital circuits, the development of medical devices has also followed the development of digital circuits. The digital processing of analog signals is an inevitable trend of development.

[0003] The commonly used medical devices such as sphygmomanometers, dynamic blood pressure recorders, air pressure massagers, and external counterpulsators all use pressure cuffs that act on the human body. Their function is only to transmit pressure, and when collecting pressure, they are sampled through the pressure sensor and circuit inside the main control machine. The sampled pressure value is not the actual pressure acting on the human body, and there is delay and loss in the tracheal transmission process; for example: the trachea connecting the cuff and the main control machine in the dynamic blood pressure recorder is relatively long, which leads to a long transmission delay, and the human body is prone to shaking after wearing it, causing interference waves, causing serious calculation errors in the measured data. Based on the shortcomings of the existing pressure cuffs when in use, it is urgent to design a pressure cuff that can not only complete the traditional pressure transmission during the measurement process, but also accurately and quickly measure the actual pressure value acting on the human body. Summary of the invention

[0004] The object of the present invention is to provide a pressure cuff which has the advantages of simple structure, scientific design, high degree of digitization, strong anti-interference ability, simple wiring structure and easy operation.

[0005] The technical solution of the present invention is implemented as follows: a pressure cuff, in particular, comprises a cuff body and an airway tube; an air bag is arranged in the cuff body, a pressure sensor is arranged on the inner side of the cuff body, a signal processing module is also installed in the cuff body, and a signal input end of the signal processing module is electrically connected to an output end of the pressure sensor;

[0006] The cross section of the airway tube includes an inner layer and an outer layer, wherein a tracheal cavity is formed in the inner layer, one end of the tracheal cavity is connected to the airbag, and the other end of the tracheal cavity is used to connect to the inflation mechanism when in use; the outer layer wraps the outer surface of the inner layer, and the outer layer is provided with a plurality of metal wires arranged in a circular array with the center of the outer layer as the center in the cross section, and each two adjacent metal wires are insulated and separated, and the plurality of metal wires include at least one first metal wire and at least one second metal wire;

[0007] Both ends of the air duct are formed with incisions on the outer ring, and wiring rings are fixed on the outer peripheries of both ends of the air duct; one wiring ring corresponds to one incision, and a first conductive block and a second conductive block extending into the incision are provided in the wiring ring; the first conductive blocks of the two wiring rings are connected and conducted by at least one first metal wire, and the second conductive blocks of the two wiring rings are connected and conducted by at least one second metal wire; in the wiring ring at one end of the air duct: the first conductive block is electrically connected to the input end of the pressure sensor, and the second conductive block is electrically connected to the signal output end of the signal processing module; in the wiring ring at the other end of the air duct: the first conductive block and the second conductive block are both used to electrically connect to the main control machine when in use.

[0008] In this solution, a pressure sensor and a signal processing module are provided in the cuff body, so that when in use, the signal processing module can directly convert the pressure measured by the pressure sensor into an electrical signal, and send the electrical signal (data pressure) to the main control machine for analysis. Such a structure can directly measure the actual pressure value acting on the human body when in use, and has the advantages of high degree of digitization and strong anti-interference ability. In addition, in this solution, an air guide cavity, a first metal wire and a second metal wire are provided in the air guide tube, so that when in use, only one air guide tube is needed to complete the tasks of inflation, deflation, power supply and signal transmission, and an independent air tube and an independent wire are not needed when in use, and the line connection is simple and the operation is more convenient.

[0009] In order to prevent the first metal wire and the second metal wire from breaking when the airway tube is bent, the first metal wire and the second metal wire of the airway tube are arranged in a wave-like shape along the length direction of the airway tube.

[0010] In order to make the structure of the wiring ring more reasonable, the wiring ring includes a first half ring and a second half ring, both of which are made of insulating materials; the first half ring is provided with the first conductive block, which protrudes from the inner surface of the first half ring; the second half ring is provided with the second conductive block, which protrudes from the inner surface of the second half ring; both sides of the first half ring are bent outward to form a first connecting plate portion, and both sides of the second half ring are bent outward to form a second connecting plate portion, the two first connecting plate portions of the first half ring correspond to the two second connecting plate portions of the second half ring, and the first connecting plate portion and the second connecting plate portion are fixedly connected together by bolts, so that the first half ring and the second half ring are connected to form an annular structure surrounding the outer periphery of the air guide tube.

[0011] In order to prevent the wiring ring from rotating randomly after installation and to prevent the first conductive block and the second conductive block from being connected to the wrong object, a first conical boss group is formed on the inner surface of the first semi-ring member, the first conical boss group of the first semi-ring member and the first conductive block are arranged along the axis of the first semi-ring member, and the first conical boss group includes a plurality of first conical bosses arranged around the axis of the first semi-ring member; a second conical boss group is formed on the inner surface of the second semi-ring member, the second conical boss group of the second semi-ring member and the second conductive block are arranged along the axis of the second semi-ring member, and the second conical boss group includes a plurality of second conical bosses arranged around the axis of the second semi-ring member;

[0012] The first half ring member is connected to the second half ring member, so that the first conical protrusion of the first half ring member and the second conical protrusion of the second half ring member are both inserted into the outer layer of the air duct, so that the wiring ring is positioned on the air duct, and the first conductive block extends into the incision to contact and conduct with at least one first metal wire, and the second conductive block extends into the incision to contact and conduct with at least one second metal wire.

[0013] In order to facilitate the electrical connection of the wiring ring with the main control machine or pressure sensor or signal processing module, in each wiring ring: the first conductive block is provided with a first terminal that passes through the first half ring and extends out of the outer surface of the first half ring; the second conductive block is provided with a second terminal that passes through the second half ring and extends out of the outer surface of the second half ring; the color of the first terminal is different from that of the second terminal.

[0014] In order to make the connection structure between the wiring ring and the air duct more secure, a first connecting plate portion of the first half ring of each wiring ring and a second connecting plate portion of the second half ring are connected by at least two bolts, one of which is located between the first conductive block of the first half ring and the second conductive block of the second half ring, and one bolt is located between the first conical boss group of the first half ring and the second conical boss group of the second half ring. With such a design, the two bolts between the first conductive block of the first half ring and the second conductive block of the second half ring can cooperate with the first conductive block and the second conductive block to clamp the inner layer of the air duct, so that the first conductive block is in contact with the first metal wire and the second conductive block is in contact with the second metal wire; and the two bolts between the first conical boss group of the first half ring and the second conical boss group of the second half ring can cooperate with the first conical boss group and the second conical boss group to clamp the outer layer of the air duct, so that the first conical boss and the second conical boss are both inserted into the outer layer of the air duct.

[0015] In order to avoid cutting the inner layer by mistake when cutting the outer layer of the air guide tube to form an incision, the color of the outer layer of the air guide tube is different from the color of the inner layer.

[0016] In order to make the connection structure between the wiring ring and the air duct more reasonable, docking joints for connecting ventilation are inserted at both ends of the air duct, one docking joint corresponds to one wiring ring, the part of the docking joint extending into the air duct cooperates with the wiring ring to clamp and fix the air duct, and the part of the docking joint extending into the air duct supports the inner layer of the air duct, so that the first conductive block of the wiring ring cooperates with the inner layer of the air duct to clamp and press at least one first metal wire, and the second conductive block of the wiring ring cooperates with the inner layer of the air duct to clamp and press at least one second metal wire.

[0017] The invention has the advantages of simple structure, scientific design, high degree of digitization, strong anti-interference ability, simple wiring structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment.

[0019] Figure 2 Schematic diagram of the front structure of the airway in the embodiment.

[0020] Figure 3 Schematic diagram of the left side structure of the airway in the embodiment.

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure in the AA direction.

[0022] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part B.

[0023] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure in the CC direction.

[0024] Figure 7 for Figure 2 Schematic diagram of the cross-sectional structure in the DD direction.

[0025] Explanation of the reference numerals: 1-sleeve body; 2-air guide tube; 21-inner layer; 22-outer layer; 23-tracheal cavity; 24-first metal wire; 25-second metal wire; 26-incision; 3-pressure sensor; 4-signal processing module; 5-wiring ring; 51-first conductive block; 511-first terminal; 52-second conductive block; 521-second terminal; 53-first half ring; 531-first connecting plate; 532-first conical boss; 54-second half ring; 541-second connecting plate; 542-second conical boss; 55-bolt; 6-joint. DETAILED DESCRIPTION

[0026] like Figure 1 , Figure 2 , Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown, a pressure cuff of the present embodiment comprises a cuff body 1 and an air guide tube 2; an air bag is arranged in the cuff body 1 (the air bag is not shown in the drawings), a pressure sensor 3 is arranged on the inner side of the cuff body 1, a signal processing module 4 is also installed in the cuff body 1, and a signal input end of the signal processing module 4 is electrically connected to an output end of the pressure sensor 3; the cross section of the air guide tube 2 comprises an inner layer 21 and an outer layer 22, a tracheal cavity 23 is formed in the inner layer 21, one end of the tracheal cavity 23 is connected to the air bag, and the other end of the tracheal cavity 23 is used to connect to the inflation mechanism when in use; the outer layer 22 is connected to the air bag; the air bag ... The outer surface of the inner layer 21 is wrapped, and the outer layer 22 is provided with 10 metal wires arranged in a circular array with the center of the outer layer 22 as the center in the cross section, and each two adjacent metal wires are insulated and separated, and the 10 metal wires include 5 first metal wires 24 and 5 second metal wires 25, and the 5 first metal wires 24 and the 5 second metal wires 25 are respectively located on both sides of the cross section of the air guide tube 2; both ends of the air guide tube 2 are annularly cut to form a cutout 26 on the outer layer 22, and a wiring ring 5 is fixed on the outer periphery of both ends of the air guide tube 2; a wiring ring 5 corresponds to the cutout 26, and a stretching ring is provided in the wiring ring 5 The first conductive blocks 51 and the second conductive blocks 52 are inserted into the cutout 26; the first conductive blocks 51 of the two wiring rings 5 ​​are connected and conducted by at least one first metal wire 24, and the second conductive blocks 52 of the two wiring rings 5 ​​are connected and conducted by at least one second metal wire 25; the two ends of the first metal wire 24 that is not used to connect the first conductive blocks 51 of the two wiring rings 5 ​​are not cut to be flush with the end surface of the outer layer 22, and the two ends of the second metal wire 25 that is not used to connect the second conductive blocks 52 of the two wiring rings 5 ​​are not cut to be flush with the end surface of the outer layer 22, so as to avoid the problem of not being used to connect The first conductive blocks 51 of the two wiring rings 5 ​​are connected to the first metal wire 24, and the ends of the second metal wire 25 that are not used to connect the second conductive blocks 52 of the two wiring rings 5 ​​are bent and accidentally touch the first conductive block 51 or the second conductive block 52, which is convenient for organizing the circuits; in the wiring ring 5 at one end of the air duct 2: the first conductive block 51 is electrically connected to the input end of the pressure sensor 3, and the second conductive block 52 is electrically connected to the signal output end of the signal processing module 4; in the wiring ring 5 at the other end of the air duct 2: the first conductive block 51 and the second conductive block 52 are both used to be electrically connected to the main control machine when in use. With such a design, when in use, the signal processing module 4 can directly convert the pressure measured by the pressure sensor 3 into an electrical signal, and send the electrical signal (data pressure) to the main control machine for analysis. Such a structure can directly measure the actual pressure value acting on the human body when in use, and has the advantages of high degree of digitization and strong anti-interference ability. In addition, when in use, only one airway tube 2 is needed to complete the tasks of inflation, deflation, power supply and signal transmission. When in use, there is no need to use an independent airway and an independent wire, which has the advantages of simple line connection and more convenient operation.

[0027] In order to make the airway tube 2 more flexible and prevent the first metal wire 24 and the second metal wire 25 from breaking when the airway tube 2 is bent, Figure 3 , Figure 4 As shown, the first metal wire 24 and the second metal wire 25 of the air duct 2 are both arranged in a wave-like shape along the length direction of the air duct 2 .

[0028] In order to make the structure of the wiring ring 5 more reasonable, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the wiring ring 5 includes a first half ring 53 and a second half ring 54, both of which are made of insulating materials; the first conductive block 51 is arranged in the first half ring 53, the first conductive block 51 protrudes from the inner surface of the first half ring 53, and the first conductive block 51 and the first half ring 53 are integrally formed; the second conductive block 52 is arranged in the second half ring 54, the second conductive block 52 protrudes from the inner surface of the second half ring 54, and the second conductive block 52 and the second half ring 5 4 is integrally formed; both sides of the first half ring 53 are bent outward to form a first connecting plate portion 531, and both sides of the second half ring 54 are bent outward to form a second connecting plate portion 541. The two first connecting plates 531 of the first half ring 53 correspond to the two second connecting plates 541 of the second half ring 54. The first connecting plate portion 531 and the second connecting plate portion 541 are fixedly connected together by bolts 55, so that the first half ring 53 and the second half ring 54 are connected to form an annular structure surrounding the outer periphery of the air guide tube 2. In this embodiment, the first connecting plate portion 531 and the second connecting plate portion 541 are specifically connected together by bolts 55 and nuts.

[0029] In order to prevent the wiring ring 5 from rotating randomly after installation, and to prevent the first conductive block 51 and the second conductive block 52 from connecting to the wrong object, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7As shown, a first conical boss group is also formed on the inner surface of the first semi-ring member 53, and the first conical boss group of the first semi-ring member 53 and the first conductive block 51 are arranged along the axis of the first semi-ring member 53, and the first conical boss group includes a plurality of first conical bosses 532 arranged around the axis of the first semi-ring member 53; a second conical boss group is also formed on the inner surface of the second semi-ring member 54, and the second conical boss group of the second semi-ring member 54 and the second conductive block 52 are arranged along the axis of the second semi-ring member 54, and the second conical boss group includes a plurality of A second conical boss 542 is arranged around the axis of the second semi-ring member 54; the first semi-ring member 53 is connected to the second semi-ring member 54, so that the first conical boss 532 of the first semi-ring member 53 and the second conical boss 542 of the second semi-ring member 54 are both inserted into the outer layer 22 of the air duct 2, so that the wiring ring 5 is positioned on the air duct 2, and the first conductive block 51 extends into the incision 26 to contact and conduct with at least one first metal wire 24, and the second conductive block 52 extends into the incision 26 to contact and conduct with at least one second metal wire 25.

[0030] In order to facilitate the electrical connection between the wiring ring 5 and the main control machine or the pressure sensor 3 or the signal processing module 4, as shown in FIG. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown, in each wiring ring 5: the first conductive block 51 is provided with a first terminal 511 which passes through the first half ring member 53 and extends out of the outer surface of the first half ring member 53; the second conductive block 52 is provided with a second terminal 521 which passes through the second half ring member 54 and extends out of the outer surface of the second half ring member 54; the color of the first terminal 511 is different from that of the second terminal 521. The design of different colors of the first terminal 511 and the second terminal 521 makes it easier to identify during wiring, thereby further improving production efficiency.

[0031] In order to make the connection structure between the wiring ring 5 and the air guide tube 2 more secure, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, a first connecting plate portion 531 of the first half ring 53 and a second connecting plate portion 541 of the second half ring 54 of each wiring ring 5 are connected by two bolts 55, wherein one bolt 55 is located between the first conductive block 51 of the first half ring 53 and the second conductive block 52 of the second half ring 54, and one bolt 55 is located between the first conical boss group of the first half ring 53 and the second conical boss group of the second half ring 54. With such a design, the two bolts 55 between the first conductive block 51 of the first semi-ring member 53 and the second conductive block 52 of the second semi-ring member 54 can cooperate with the first conductive block 51 and the second conductive block 52 to clamp the inner layer 21 of the air duct 2, so that the first conductive block 51 is in contact with the first metal wire 24 for conduction, and the second conductive block 52 is in contact with the second metal wire 25 for conduction; and the two bolts 55 between the first conical boss group of the first semi-ring member 53 and the second conical boss group of the second semi-ring member 54 can cooperate with the first conical boss group and the second conical boss group to clamp the outer layer 22 of the air duct 2, so that the first conical boss 532 and the second conical boss 542 are both inserted into the outer layer 22 of the air duct 2.

[0032] In order to facilitate identification of the outer layer 22 and the inner layer 21 of the airway tube 2 and avoid mistakenly cutting the inner layer 21 when cutting the outer layer 22 of the airway tube 2 to form the incision 26 , the color of the outer layer 22 of the airway tube 2 is different from that of the inner layer 21 .

[0033] In order to make the connection structure between the wiring ring 5 and the air guide tube 2 more reasonable, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a docking joint 6 for connecting ventilation is inserted at both ends of the air duct 2, and one docking joint 6 corresponds to one wiring ring 5. The portion of the docking joint 6 extending into the air duct 2 cooperates with the wiring ring 5 to clamp and fix the air duct 2, and the portion of the docking joint 6 extending into the air duct 2 supports the inner layer 21 of the air duct 2, so that the first conductive block 51 of the wiring ring 5 cooperates with the inner layer 21 of the air duct 2 to clamp and press at least one first metal wire 24, and the second conductive block 52 of the wiring ring 5 cooperates with the inner layer 21 of the air duct 2 to clamp and press at least one second metal wire 25.

Claims

1. A pressure cuff, characterized in that: It includes a sleeve body and an air guide tube; an air bag is arranged in the sleeve body, a pressure sensor is arranged on the inner side of the sleeve body, and a signal processing module is also installed in the sleeve body, and the signal input end of the signal processing module is electrically connected to the output end of the pressure sensor; The cross section of the airway tube includes an inner layer and an outer layer, wherein a tracheal cavity is formed in the inner layer, one end of the tracheal cavity is connected to the airbag, and the other end of the tracheal cavity is used to connect to the inflation mechanism when in use; the outer layer wraps the outer surface of the inner layer, and the outer layer is provided with a plurality of metal wires arranged in a circular array with the center of the outer layer as the center in the cross section, and each two adjacent metal wires are insulated and separated, and the plurality of metal wires include at least one first metal wire and at least one second metal wire; Both ends of the air duct are formed with incisions on the outer ring, and wiring rings are fixed on the outer peripheries of both ends of the air duct; one wiring ring corresponds to one incision, and a first conductive block and a second conductive block extending into the incision are provided in the wiring ring; the first conductive blocks of the two wiring rings are connected and conducted by at least one first metal wire, and the second conductive blocks of the two wiring rings are connected and conducted by at least one second metal wire; in the wiring ring at one end of the air duct: the first conductive block is electrically connected to the input end of the pressure sensor, and the second conductive block is electrically connected to the signal output end of the signal processing module; in the wiring ring at the other end of the air duct: the first conductive block and the second conductive block are both used to electrically connect to the main control machine when in use.

2. A pressure cuff according to claim 1, characterized in that: The first metal wire and the second metal wire of the air guide tube are both arranged in a wave-like shape along the length direction of the air guide tube.

3. A pressure cuff according to claim 1, characterized in that: The wiring ring includes a first half ring and a second half ring, both of which are made of insulating materials; the first conductive block is arranged in the first half ring, and the first conductive block protrudes from the inner surface of the first half ring; the second conductive block is arranged in the second half ring, and the second conductive block protrudes from the inner surface of the second half ring; both sides of the first half ring are bent outward to form a first connecting plate portion, and both sides of the second half ring are bent outward to form a second connecting plate portion, the two first connecting plate portions of the first half ring correspond to the two second connecting plate portions of the second half ring, and the first connecting plate portion and the second connecting plate portion are fixedly connected together by bolts, so that the first half ring and the second half ring are connected to form an annular structure surrounding the outer periphery of the air guide tube.

4. A pressure cuff according to claim 3, characterized in that: A first conical boss group is also formed on the inner surface of the first semi-ring member, the first conical boss group of the first semi-ring member and the first conductive block are arranged along the axis of the first semi-ring member, and the first conical boss group includes a plurality of first conical bosses arranged around the axis of the first semi-ring member; a second conical boss group is also formed on the inner surface of the second semi-ring member, the second conical boss group of the second semi-ring member and the second conductive block are arranged along the axis of the second semi-ring member, and the second conical boss group includes a plurality of second conical bosses arranged around the axis of the second semi-ring member; The first half ring member is connected to the second half ring member, so that the first conical protrusion of the first half ring member and the second conical protrusion of the second half ring member are both inserted into the outer layer of the air duct, so that the wiring ring is positioned on the air duct, and the first conductive block extends into the incision to contact and conduct with at least one first metal wire, and the second conductive block extends into the incision to contact and conduct with at least one second metal wire.

5. A pressure cuff according to claim 3, characterized in that: In each wiring ring: the first conductive block is provided with a first terminal that passes through the first half ring and extends out of the outer surface of the first half ring; the second conductive block is provided with a second terminal that passes through the second half ring and extends out of the outer surface of the second half ring; the color of the first terminal is different from that of the second terminal.

6. A pressure cuff according to claim 4, characterized in that: A first connecting plate portion of the first half ring member and a second connecting plate portion of the second half ring member of each wiring ring are connected by at least two bolts, wherein one bolt is located between the first conductive block of the first half ring member and the second conductive block of the second half ring member, and one bolt is located between the first conical boss group of the first half ring member and the second conical boss group of the second half ring member.

7. A pressure cuff according to claim 1, characterized in that: The color of the outer layer of the airway tube is different from the color of the inner layer.

8. A pressure cuff according to claim 1, characterized in that: Connectors for connecting ventilation are inserted at both ends of the air duct, one connector corresponds to a wiring ring, the part of the connector extending into the air duct cooperates with the wiring ring to clamp and fix the air duct, and the part of the connector extending into the air duct supports the inner layer of the air duct, so that the first conductive block of the wiring ring cooperates with the inner layer of the air duct to clamp and press at least one first metal wire, and the second conductive block of the wiring ring cooperates with the inner layer of the air duct to clamp and press at least one second metal wire.

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