A device for preventing infection during blood pressure measurement

Abstract

The application belongs to the technical field of medical devices, and provides an auxiliary device for preventing infection during blood pressure measurement, comprising: two housings oppositely arranged on a first base; two diaphragm rolls respectively arranged on the two housings, each diaphragm roll comprising a roll core and a diaphragm wound on the roll core; a first hot-melt sealing device arranged in the housing; and a second hot-melt sealing device, which is arranged above the first hot-melt sealing device and in the housing, and is used for connecting the upper ends of two diaphragms released by the two diaphragm rolls together by hot-melt, and separating the two diaphragms after integrated connection from the remaining diaphragms on the two diaphragm rolls. The auxiliary device for preventing infection during blood pressure measurement can prevent patients from being infected by harmful bacteria, viruses and fungi on the cuff without changing the structure of the existing sphygmomanometer, and is convenient for popularization and application.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an auxiliary device for preventing infection during blood pressure measurement. Background Technology

[0002] Blood pressure cuffs (the part that comes into contact with the patient) are often used continuously by multiple patients without being cleaned. Studies have shown that cuffs frequently accumulate large amounts of harmful bacteria, viruses, and fungi. Therefore, the cuff can act as a source of potentially serious infectious diseases between patients, causing considerable morbidity and mortality.

[0003] Currently, handheld cleaning swabs soaked in alcohol are commonly used to clean cuffs. This method is not only time-consuming and cumbersome, but also inefficient, especially since a large portion of the cuff's surface consists of hook and loop fasteners, and such swabs cannot effectively clean the material of the hooks and loops. In practice, this often means that the cuff cannot be completely cleaned.

[0004] Some improved blood pressure monitors exist in the prior art, which clean the cuff by incorporating a disinfection mechanism, such as alcohol disinfection, ultraviolet disinfection, or ozone disinfection. However, this approach complicates the structure of the blood pressure monitor and makes it difficult to promote its widespread application. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this invention is to provide an auxiliary device for preventing infection during blood pressure measurement. Without changing the structure of the existing blood pressure monitor, it can prevent patients from being infected by harmful bacteria, viruses and fungi on the cuff, and is easy to promote and apply.

[0006] To achieve the above objectives, the present invention provides an auxiliary device for preventing infection during blood pressure measurement, comprising: a first base; two housings disposed opposite to each other on the first base; two diaphragm rolls respectively disposed on the two housings, the diaphragm rolls being supported at the upper end of the housings and rotatable about their own axis, each diaphragm roll including a core and a diaphragm wound on the core; a first heat-sealing device disposed within the housings for connecting the lower ends of two diaphragms released by the two diaphragm rolls together by heat fusion; and a second heat-sealing device located above the first heat-sealing device and disposed within the housings for connecting the upper ends of two diaphragms released by the two diaphragm rolls together by heat fusion, thereby separating the two integrally connected diaphragms from the remaining diaphragms on the two diaphragm rolls.

[0007] Furthermore, the first hot melt sealing device and the second hot melt sealing device have the same structure, and both include a hot melt assembly disposed in one of the housings, a pressing assembly disposed in the other housing, and a first driving device for bringing the hot melt assembly and the pressing assembly closer to or further away from each other.

[0008] Furthermore, the first driving device includes two lateral movement mechanisms respectively disposed in the two housings. Each lateral movement mechanism includes: a second base fixedly disposed in the housing; a first screw rotatably disposed on the second base; a first mounting seat slidably disposed on the second base and threadedly connected to the first screw, the first mounting seat being fixedly connected to the hot melt assembly or the pressing assembly; and a first motor fixedly disposed on the second base for driving the screw to rotate.

[0009] Furthermore, a first sensor is fixedly installed on the hot-melt component or the pressing component in the first hot-melt sealing device. The first sensor is used to detect whether a diaphragm passes between the hot-melt component and the pressing component.

[0010] Furthermore, an inclined guide plate is fixedly provided at the lower part of the housing. The two diaphragms maintain a first distance before sliding into the two guide plates respectively, and maintain a second distance after sliding out from the lower end of the two guide plates respectively. The second distance is smaller than the first distance.

[0011] Furthermore, it also includes a second drive device for raising and lowering the second heat-sealing device and a second sensor disposed on the second heat-sealing device. The second drive device includes two lifting mechanisms respectively disposed in the two housings. The lifting mechanism includes: a third base fixedly disposed in the housing, the third base being slidably connected to the second base; a second screw rotatably disposed on the third base along the longitudinal direction, the second screw being threadedly connected to the second base; and a second motor fixedly disposed on the third base for driving the second screw to rotate. At least one second sensor is disposed on both the heat-sealing assembly and the pressing assembly. The second sensor is fixedly disposed below or at the bottom of the heat-sealing assembly or the pressing assembly, and the detection direction is downward.

[0012] Furthermore, it also includes two limiting mechanisms respectively disposed on the hot-melt assembly and the pressing assembly in the second hot-melt sealing device. The limiting mechanism includes: a fourth base fixedly disposed on the bottom of the hot-melt assembly or the pressing assembly; a second mounting seat slidably disposed on the fourth base; a first guide roller rotatably disposed on the second mounting seat; a sensing sheet fixedly connected to the second mounting seat; a slotted sensor fixedly disposed on the fourth base; and a compression spring for causing the sensing sheet to tend to move away from the slotted sensor.

[0013] Furthermore, the winding core is driven by a third drive device disposed within the housing, thereby rotating about its own axis.

[0014] Furthermore, the diaphragm roll is detachably mounted on the housing.

[0015] Furthermore, the top of the housing is provided with an installation port for attaching and detaching the diaphragm roll, and the installation port is provided with an openable and closable cover.

[0016] The beneficial effects of this invention are as follows: This invention provides an auxiliary device for preventing infection during blood pressure measurement. The diaphragm roll is released manually or automatically, with the lower end of the diaphragm extending to or below the height of the first heat-sealing device. The patient then places their arm between the two released diaphragms. The first heat-sealing device is activated to heat-seal the lower ends of the two diaphragms together. Then, the second heat-sealing device is activated to heat-seal the upper ends of the two diaphragms together while simultaneously cutting the bonded diaphragms away from other diaphragms on the roll, thus leaving a ring-shaped diaphragm on the patient's arm. Finally, medical personnel or doctors place the existing blood pressure cuff over the diaphragm on the patient's arm. Due to the diaphragm's isolation, the patient is protected from infection by harmful bacteria, viruses, and fungi on the cuff. Furthermore, it does not require modification of the existing blood pressure monitor's structure; it is designed for use with existing blood pressure monitors based on actual usage needs, thus facilitating widespread application. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 A perspective view of an auxiliary device for preventing infection during blood pressure measurement according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A longitudinal half-section view;

[0020] Figure 3 for Figure 1 A three-dimensional diagram of part of the structure;

[0021] Figure 4 for Figure 3 A three-dimensional diagram of a partial structure;

[0022] Figure 5 for Figure 4 A three-dimensional diagram of part of the structure;

[0023] Figure 6 This is a 3D view of the lifting mechanism;

[0024] Figure 7 for Figure 3 A three-dimensional view of another part of the structure;

[0025] Figure 8 for Figure 1 A top view of part of the structure;

[0026] Figure 9 for Figure 8 Sectional view of plane AA;

[0027] Figure label:

[0028] 10. First base; 20. Housing; 21. Support block; 22. Cover; 23. Second guide roller; 24. Guide plate; 30. Diaphragm roll; 31. Core; 32. Diaphragm; 33. First end cap; 34. Second end cap; 41. Hot melt assembly; 42. Pressing assembly; 431. Second base; 432. First screw; 433. First mounting base; 434. Connecting rod; 435. First motor; 44. First sensor; 45. Lifting mechanism; 451. Third base; 4 52. Second screw; 453. Second motor; 46. Second sensor; 47. Limiting mechanism; 471. Fourth base; 472. Second mounting base; 473. First guide roller; 474. Guide rod; 475. Sensing plate; 476. Slotted sensor; 477. Compression spring; 50. Third drive device; 51. First gear; 52. Second gear; 53. Third motor; 54. Rotating shaft; 541. First limiting step; 60. Adjusting screw; 61. Second limiting step. Detailed Implementation

[0029] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] like Figure 1-9As shown, this embodiment provides an auxiliary device for preventing infection during blood pressure measurement, including a first base 10, a housing 20, a diaphragm roll 30, a first heat-sealing device, and a second heat-sealing device. Two housings 20 are disposed opposite each other on the first base 10, each housing 20 being fixedly connected to the base. A diaphragm roll 30 is disposed at the upper end or top of each housing 20, supported on the housing 20 and rotatable about its own axis. The diaphragm roll 30 includes a core 31 and a diaphragm 32 wound around the core 31; the diaphragm 32 is a plastic film.

[0036] Both the first and second heat-sealing devices are housed within the casing 20, with the second heat-sealing device positioned above the first. The first heat-sealing device connects the lower ends of two diaphragms released from the two diaphragm rolls 30 by heat fusion. The second heat-sealing device connects the upper ends of two diaphragms released from the two diaphragm rolls 30 by heat fusion, separating the two integrally connected diaphragms from the remaining diaphragms on the two diaphragm rolls 30. In other words, the second heat-sealing device has the function of cutting the diaphragms that have adhered together. Of course, the first heat-sealing device can also have the function of cutting the diaphragms that have adhered together; therefore, the structures of the first and second heat-sealing devices can be identical or slightly different.

[0037] In addition, the inner sides of both housings 20 are open, so that the first and second heat-sealing devices located inside the housings 20 can extend out of the housings 20 when they are in operation.

[0038] The method of using the auxiliary device for preventing infection during blood pressure measurement provided in this embodiment is as follows:

[0039] The diaphragm roll 30 is rotated manually or automatically to release the diaphragm 32. The lower end of the diaphragm 32 extends to or below the height of the first heat-sealing device. The patient then places their arm between the two released diaphragms. The first heat-sealing device is activated to heat-seal the lower ends of the two diaphragms together. Then, the second heat-sealing device is activated to heat-seal the upper ends of the two diaphragms together while simultaneously cutting the bonded diaphragms away from the other diaphragms on the diaphragm roll 30, leaving a ring-shaped diaphragm on the patient's arm. Finally, medical staff or doctors place the cuff of an existing blood pressure monitor over the diaphragm on the patient's arm. The diaphragm's isolation prevents the patient from being infected by harmful bacteria, viruses, and fungi on the cuff. This method does not require modification of the existing blood pressure monitor's structure; instead, it is compatible with existing blood pressure monitors based on actual usage needs, facilitating widespread application.

[0040] In one embodiment, the first and second heat-sealing devices have identical structures, each including a heat-sealing component 41 disposed in one housing 20, a pressing component 42 disposed in the other housing 20, and a first driving device for moving the heat-sealing component 41 and the pressing component 42 closer together or further apart. The structures of the heat-sealing component and the pressing component 42 can be referenced from the structure disclosed in CN111806798A, and will not be repeated in this embodiment. The first driving device can drive either the heat-sealing component 41 or the pressing component 42 to move, while the other can remain fixed, or both the heat-sealing component 41 and the pressing component 42 can be driven to move closer together or further apart.

[0041] Preferably, the first driving device includes two lateral movement mechanisms respectively disposed in the two housings 20. Each lateral movement mechanism includes a second base 431, a first screw 432, a first mounting base 433, and a first motor 435. The second base 431 is fixed laterally within the housing 20. The first screw 432 is rotatably disposed laterally on the second base 431. The first mounting base 433 is slidably disposed on the second base 431 and slides laterally. Furthermore, the first mounting base 433 is threadedly connected to the first screw 432 and fixedly connected to the heat-melting assembly 41 or the pressing assembly 42. Preferably, the first mounting base 433 is indirectly connected to the heat-melting assembly 41 or the pressing assembly 42 via a connecting rod 434. Because the travel distance of the heat-melting assembly 41 or the pressing assembly 42 in the lateral direction is not large, this arrangement reduces the length of the first mounting base 433 while ensuring the proper functioning of the heat-melting assembly 41 or the pressing assembly 42. The first screw 432 is driven to rotate by the first motor 435 fixed on the second base 431, thereby causing the first mounting base 433 to slide back and forth laterally on the first base 10, and consequently the heat-melting assembly 41 or the pressing assembly 42 also slides back and forth laterally. Because the heat-melting assembly 41 and the pressing assembly 42 are each controlled by a lateral movement mechanism, the heat-melting assembly 41 and the pressing assembly 42 move toward or away from each other.

[0042] In one embodiment, a first sensor 44 is fixedly mounted on the heat-melting component 41 or the pressing component 42 in the first heat-melting sealing device. Preferably, the first sensor 44 is a capacitive proximity sensor. The first sensor 44 is used to detect whether a diaphragm is passing between the heat-melting component 41 and the pressing component 42. Furthermore, a controller (not shown in the figures) is fixedly mounted inside the housing 20 or on the first base 10. The controller can be a PLC and is electrically connected to the first sensor 44 and the first drive device. When the lower end of the released diaphragm passes between the heat-melting component 41 and the pressing component 42 in the first heat-melting sealing device, it is detected by the first sensor 44. The first sensor 44 feeds a signal back to the controller. The controller first controls the first heat-melting sealing device to work, bonding the lower ends of the two diaphragms together, and then controls the second heat-melting sealing device to work, bonding the upper ends of the two diaphragms together. By setting the first sensor 44 and the controller, the automatic operation of the first and second heat-melting sealing devices can be realized, improving the automation level of the auxiliary device in this embodiment.

[0043] In one embodiment, an inclined guide plate 24 is fixedly disposed at the lower part of each housing 20. The surface of the guide plate 24 is smooth and the inclination angle is appropriate (preferably between 30 and 60°), which facilitates the smooth sliding of the diaphragm downward from the surface of the guide plate 24. Before the two diaphragms slide into the two guide plates 24 respectively, a first distance D1 is maintained. After the two diaphragms slide out from the lower ends of the two guide plates 24 respectively, a second distance D2 is maintained, the second distance D2 being smaller than the first distance D1. The guide plate 24 can reduce the gap between the two diaphragms, thereby minimizing the second gap D2 at the lower end of the two diaphragms as much as possible. This reduces the stroke of the hot melt assembly 41 and the pressing assembly 42 in the first hot melt sealing device. Furthermore, as the hot melt assembly 41 and the pressing assembly 42 approach each other, they push the two diaphragms closer together. Since the second gap D2 is small, the moving distance of the hot melt assembly 41 and the pressing assembly 42 is small, preventing the lower end of the diaphragm from separating from the hot melt assembly 41 and the pressing assembly 42, which would prevent the hot melt assembly 41 and the pressing assembly 42 from effectively sticking the lower end of the diaphragm together. If the second gap D2 is large, after the first sensor 44 detects that a diaphragm is passing between the hot melt assembly 41 and the pressing assembly 42, the controller will also control the diaphragm roll 30 to stop releasing the diaphragm. At this time, the lower end of the diaphragm is not long enough between the hot melt assembly 41 and the pressing assembly 42. When the lower ends of the two diaphragms are pushed together laterally, the lower ends of the two diaphragms are likely to leave between the hot melt assembly 41 and the pressing assembly 42.

[0044] Furthermore, as mentioned earlier, the tilt angle of the guide plate 24 should ideally be between 30° and 60°. This is because when the tilt angle of the guide plate 24 is less than 30°, the diaphragm will slide down the guide plate 24 more slowly, or may even pile up on the guide plate 24 and stop sliding down. When the tilt angle of the guide plate 24 is greater than 60°, since the first gap D1 should be greater than the width of the patient's arm to ensure that the patient's arm can be smoothly and conveniently placed between the two released diaphragms, given that the first gap D1 is fixed, increasing the tilt angle of the guide plate 24 will increase the height of the upper end of the guide plate 24. This will require adjusting the installation position of the diaphragm roll 30 and the second heat-sealing device, thus increasing the overall height of the auxiliary device.

[0045] In addition, the guide plate 24 in this embodiment can also support the patient's arm.

[0046] In one embodiment, the anti-infection auxiliary device for blood pressure measurement further includes a second drive device for raising and lowering the second heat-sealing device and a second sensor 46 disposed on the second heat-sealing device. The second drive device includes two lifting mechanisms 45 respectively disposed in the two housings 20. Each lifting mechanism 45 includes a third base 451, a second screw 452, and a second motor 453. The third base 451 is fixed longitudinally within the housing 20 and slidably connected to the second base 431. The second screw 452 is rotatably disposed longitudinally on the third base 451 and threadedly connected to the second base 431. The second motor 453 is fixed on the third base 451 and is used to drive the second screw 452 to rotate. At least one second sensor 46 is installed on both the heat-sealing assembly 41 and the pressing assembly 42, and the second sensor 46 is fixedly disposed below or at the bottom of the heat-sealing assembly 41 or the pressing assembly 42. The detection direction of the second sensor 46 is downward, and preferably the second sensor 46 is a capacitive proximity sensor.

[0047] In actual use, the patient's arm is closer to the first heat-sealing device, for example, when the patient places their arm on the guide plate 24. To accommodate different patients' needs, the initial height of the second heat-sealing device before operation is relatively high. This leads to the following problems: firstly, the diameter of the annular diaphragm ultimately formed on the patient's arm is relatively large, making it easy for the patient to fall off during subsequent blood pressure measurements; secondly, it wastes the diaphragm. However, in the technical solution of this embodiment, when the first driving device drives the heat-sealing component 41 and the pressing component 42 in the second heat-sealing device to approach each other until there is only a small gap, the heat-sealing component 41 and the pressing component 42 stop moving. Then, the second driving device synchronously drives the heat-sealing component 41 and the pressing component 42 to move downwards. When the second sensor 46 approaches the patient's arm, the second sensor 46 generates a signal and feeds the signal back to the controller. The controller then controls the second driving device to stop working and then controls the second heat-sealing device to work, causing the heat-sealing component 41 and the pressing component 42 to approach each other further, ultimately bonding the upper ends of the two diaphragms together. This results in a smaller diameter annular septum that eventually forms on the patient's arm, making it less likely to fall off and conserving septum material.

[0048] In one embodiment, the device further includes two limiting mechanisms 47 respectively disposed on the hot-melt assembly 41 and the pressing assembly 42 in the second hot-melt sealing device. The limiting mechanism 47 includes a fourth base 471, a second mounting base 472, a first guide roller 473, a sensing sheet 475, a groove sensor 476, and a compression spring 477. The fourth base 471 is fixedly disposed at the bottom of the hot melt assembly 41 or the pressing assembly 42, and the second mounting base 472 is slidably disposed on the fourth base 471. Preferably, the second mounting base 472 is also slidably connected to the fourth base 471 through a guide rod 474. One end of the guide rod 474 is fixedly connected to the second mounting base 472. The first guide roller 473 is rotatably disposed on the second mounting base 472. The sensing sheet 475 is fixed to the other end of the guide rod 474. The slotted sensor 476 is fixedly disposed on the fourth base 471. The compression spring 477 is sleeved on the guide rod 474 and located between the fourth base 471 and the second mounting base 472. The compression spring 477 is used to make the sensing sheet 475 tend to move away from the slotted sensor 476.

[0049] The distance between the two first guide rollers 473 is always greater than or equal to the distance between the hot melt assembly 41 and the pressing assembly 42. Before the hot melt assembly 41 and the pressing assembly 42 contact the diaphragm, the two first guide rollers 473 first contact the diaphragm and abut against each other, so that the compression spring 477 is compressed and the sensing plate 475 moves closer to the slotted sensor 476. When the sensing plate 475 moves to the U-shaped opening of the slotted sensor 476, the slotted sensor 476 generates a signal and feeds the signal back to the controller. The controller controls the first drive device to stop working and then controls the second drive device to work.

[0050] When the auxiliary device of the present invention is used continuously, the copper sheet in the hot-melt assembly 41 maintains the temperature required to melt the diaphragm. The aforementioned limiting mechanism 47 ensures that the diaphragm will never come into contact with the copper sheet in the hot-melt assembly 41 within the range of movement of the hot-melt assembly 41 and the pressing assembly 42 before final contact, thereby preventing the diaphragm from being melted by the copper sheet in an unintended manner. Furthermore, during the downward movement of the two first guide rollers 473 after they abut against each other, the first guide rollers 473 move in a rolling manner, resulting in low resistance to movement.

[0051] Preferably, a second guide roller 23 is also provided at the upper end or top of the housing 20. After the diaphragm passes through the second guide roller 23, it is vertically distributed between the guide plate 24 and the diaphragm. At this time, the distance between the two diaphragms is a fixed value, namely the first distance D1 mentioned above.

[0052] In one embodiment, the winding core 31 is driven by a third drive device 50 disposed within the housing 20, thereby rotating about its own axis. Preferably, the third drive device 50 includes a first gear 51, a second gear 52, and a third motor 53. The first gear 51 and the second gear 52 are supported on the inner wall of the housing 20 and are rotatable about their respective axes. The first gear 51 is coaxially or drive-connected to the winding core 31, and the first gear 51 and the second gear 52 are meshed. Preferably, the diameter of the first gear 51 is larger than that of the second gear 52. The third motor 53 is fixed to the inner wall of the housing 20 and directly drives the second gear 52 to rotate. By providing the third drive device 50, the diaphragm can be automatically released under the control of the controller.

[0053] In one embodiment, the diaphragm roll 30 is detachably mounted on the housing 20. Preferably, the diaphragm roll 30 further includes a first end cap 33 and a second end cap 34 disposed at both ends of the core 31. The first end cap 33 and the second end cap 34 are engaged with the core 31. A regular hexagonal hole is formed at the center of the first end cap 33. One end of the shaft 54 ​​of the first gear 51 has a shape adapted to the aforementioned regular hexagonal hole, so that the shaft 54 ​​of the first gear 51 can be inserted into the regular hexagonal hole of the first end cap 33, thereby driving the first end cap 33 to rotate. In addition, a first limiting step 541 is preferably provided on the shaft 54 ​​of the first gear 51. A circular hole is formed at the center of the second end cap 34. An adjusting screw 60 is inserted into the circular hole. A second limiting step 61 is provided on the adjusting screw 60. One end of the adjusting screw 60 passes through the housing 20 and extends out of the housing 20. The adjusting screw 60 is threadedly connected to the housing 20. The diaphragm roll 30 is confined between the first limiting step 541 and the second limiting step 61. When the third driving device 50 is working, the rotation of the shaft 54 ​​of the first gear 51 drives the first end cover 33 to rotate, thereby driving the core 31 and the diaphragm on it to rotate. When a new diaphragm roll 30 needs to be replaced, the adjusting screw 60 is rotated so that it exits from the circular hole of the second end cover 34 and maintains a certain distance from the second end cover 34. Then, the used diaphragm roll 30 is removed, a new diaphragm roll 30 is installed, and the adjusting screw 60 is turned again so that the end of the adjusting screw 60 is reinserted into the circular hole of the second end cover 34. The above-described structure for detachable connection of the diaphragm roll 30 has the advantages of simple structure and convenient use.

[0054] In one embodiment, the top of the housing 20 is provided with an installation port for attaching and detaching the diaphragm roll 30, and the installation port is provided with an openable and closable cover 22. Preferably, one end of the cover 22 is hinged to the housing 20, and a support block 21 is provided on the inner wall of the housing 20 to support the other end of the cover 22. To prevent the cover 22 from being easily opened, the cover 22 and the support block 21 can be configured to be snap-fitted or magnetically connected to a certain extent. By providing the cover 22, the overall appearance of the housing 20 can be made more aesthetically pleasing and safer to use.

[0055] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An auxiliary device for preventing infection during blood pressure measurement, characterized in that, include: First base (10); Two housings (20) are disposed opposite to each other on the first base (10); Two diaphragm rolls (30) are respectively disposed on the two housings (20). The diaphragm rolls (30) are supported at the upper end of the housing (20) and can rotate about their own axis. The diaphragm rolls (30) include a core (31) and a diaphragm (32) wound on the core (31). The first heat-sealing device is disposed inside the housing (20) and is used to connect the lower ends of two diaphragms (32) released by the two diaphragm rolls (30) together by heat-sealing. as well as The second hot melt sealing device is located above the first hot melt sealing device. The second hot melt sealing device is disposed inside the housing (20) and is used to connect the upper ends of two diaphragms (32) released by the two diaphragm rolls (30) together by hot melt, and to separate the two diaphragms after integral connection from the remaining diaphragms (32) on the two diaphragm rolls (30). The first hot melt sealing device and the second hot melt sealing device have the same structure, and both include a hot melt assembly (41) disposed in one of the housings (20), a pressing assembly (42) disposed in another housing (20), and a first driving device for bringing the hot melt assembly (41) and the pressing assembly (42) closer to or further away from each other; An inclined guide plate (24) is fixedly provided at the lower part of the housing (20). The two diaphragms (32) maintain a first distance before sliding into the two guide plates (24). The two diaphragms (32) maintain a second distance after sliding out from the lower end of the two guide plates (24). The second distance is smaller than the first distance. A first sensor (44) is fixedly installed on the hot melt component (41) or the pressing component (42) in the first hot melt sealing device. The first sensor (44) is used to detect whether there is a diaphragm (32) passing between the hot melt component (41) and the pressing component (42). It also includes a second drive device for raising and lowering the second heat-sealing device and a second sensor (46) disposed on the second heat-sealing device. The second drive device includes two lifting mechanisms (45) respectively disposed in the two housings (20). The lifting mechanism (45) includes: A third base (451) is fixedly disposed inside the housing (20), and the third base (451) is slidably connected to the second base (431); A second screw (452) is rotatably mounted on the third base (451) along the longitudinal direction, and the second screw (452) is threadedly connected to the second base (431); and A second motor (453) for driving the second screw (452) to rotate is fixedly mounted on the third base (451); At least one second sensor (46) is provided on both the hot melt assembly (41) and the pressing assembly (42). The second sensor (46) is fixedly disposed below or at the bottom of the hot melt assembly (41) or the pressing assembly (42), and the detection direction is downward. It also includes two limiting mechanisms (47) respectively disposed on the heat-melting component (41) and the pressing component (42) in the second heat-melting sealing device, the limiting mechanisms (47) comprising: A fourth base (471) is fixedly disposed at the bottom of the hot melt assembly (41) or the pressing assembly (42). A second mounting base (472) is slidably disposed on the fourth base (471); Rotate the first guide roller (473) which is mounted on the second mounting base (472); The sensing element (475) is fixedly connected to the second mounting base (472); The slotted sensor (476) is fixedly mounted on the fourth base (471); and A compression spring (477) is used to cause the sensing element (475) to tend to move away from the slotted sensor (476).

2. The auxiliary device for preventing infection during blood pressure measurement according to claim 1, characterized in that, The first driving device includes two lateral movement mechanisms respectively disposed in the two housings (20), the lateral movement mechanisms including: A second base (431) is fixedly installed inside the housing (20); Rotate the first screw (432) mounted on the second base (431); A first mounting base (433) is slidably disposed on the second base (431) and threadedly connected to the first screw (432), the first mounting base (433) being fixedly connected to the hot melt assembly (41) or the pressing assembly (42); and A first motor (435) for driving the screw to rotate is fixedly mounted on the second base (431).

3. The auxiliary device for preventing infection during blood pressure measurement according to claim 1, characterized in that, The core (31) is driven by a third drive device (50) disposed in the housing (20), thereby rotating about its own axis.

4. The auxiliary device for preventing infection during blood pressure measurement according to claim 3, characterized in that, The diaphragm roll (30) is detachably mounted on the housing (20).

5. The auxiliary device for preventing infection during blood pressure measurement according to claim 4, characterized in that, The top of the housing (20) is provided with an installation port for assembling and disassembling the diaphragm roll (30), and the installation port is provided with an openable and closable cover (22).

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