CN114949454A

CN114949454A - Infusion alarm

Info

Publication number: CN114949454A
Application number: CN202210413547.9A
Authority: CN
Inventors: 李博然
Original assignee: Xuanwu Hospital
Current assignee: Xuanwu Hospital
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-08-30
Anticipated expiration: 2042-04-12
Also published as: CN114949454B

Abstract

The invention relates to an infusion alarm, which comprises a long rod clamping piece arranged on an infusion bag, wherein the long rod clamping piece comprises at least two rod arms arranged at the top of the infusion bag, the first ends of the at least two rod arms are connected with each other and can rotate relatively, the second ends of the at least two rod arms are far away from each other to form a certain distance and are arranged on two sides of the infusion bag, the second ends of the rod arms are connected with pressure sensors, the distance between two sides of the infusion bag can be changed due to the volume change of liquid in the infusion bag, the pressure on the second ends of the rod arms is changed, the pressure sensors can convert the pressure on the second ends of the rod arms into data and transmit the data, each rod arm is provided with an analysis module, and the analysis module can calculate the time required for the liquid to flow out based on the change of the pressure data provided by the pressure sensors.

Description

Infusion alarm

Technical Field

The invention relates to the technical field of medical instruments, in particular to an infusion alarm.

Background

Intravenous infusion and fluid irrigation are widely used procedures in modern medical activities, and are particularly common during anesthesia surgery, in which anesthesia doctors and nurses can continuously observe and control the fluid during the normal surgery. When the liquid medicine is about to be infused, the needle head needs to be pulled out in time, if the needle head is not pulled out in time, blood backflow and air entering blood vessels of a human body through the infusion tube can be caused, and therefore harm is caused to a patient, not only is the mental burden of the patient increased, but also much work is added to family members of the patient. In the manual monitoring process, people cannot keep attentive for a long time, and family members of patients may be away from the infusion device for treatment in case of emergency, so that an alarm device is very necessary to be installed on the infusion device.

In some special occasions, such as the rescue of major blood loss in operation or emergency operation, the administrative energy of anesthetists and nurses is limited, and in addition, due to poor blood vessel condition of some patients, the reason of operation position, the factors of intravenous infusion medicines and the like, even partial liquid in the intravenous infusion bag in operation cannot normally flow down or the flow rate is slow or even stopped, so that the intravenous anesthesia medicine cannot effectively enter the body of the patient, and serious consequences such as the fact that the patient knows in operation and even causes serious complications to die. In addition, some endoscopic surgeries, such as cystoscope and hysteroscope, which require rinsing, require a large amount of liquid to rinse, and the rinsing liquid flows into the rinsing cavity only under a certain volume and pressure, and if the remaining liquid is not enough, effective rinsing cannot be performed, which seriously affects the surgical progress and harms the benefits of patients.

The existing transfusion alarm is designed for blind people, intensive care, solitary old people, inconvenient-to-move patients, long-term transfusion or bedridden patients by utilizing the laws of gravity, transfusion running empty and the like, is an electronic alarm device for monitoring transfusion and dropping empty, but the existing transfusion alarm cannot predict the liquid running empty condition in advance and the problems of too slow liquid flow rate and even stagnation and the like, so that the clinical danger still exists.

The prior art, for example CN207429467U, discloses a device in which a holder is fixed and a light source and a light control switch are located on both sides of a liquid pack. When the device is used, the support and the infusion bottle are required to be well arranged, then the position of the oblique beam is adjusted to enable the observation liquid bag to be upright, the angle of the light-emitting device and the angle and the height of the light-operated reminding device are adjusted again, one section of line light beam of the light-emitting device is enabled to be emitted to the observation liquid bag, and the other end of the line light beam is emitted to the light display surface which is parallel to and level with the blind hole. Because of the refraction of light, when there is liquid in the observation liquid package, the light beam that sees through the observation liquid package can not shine in the dark hole, and when liquid runs out in the observation liquid package, the light beam that sees through the observation liquid package will shine in the dark hole, makes light-operated reminding device send out the police dispatch newspaper through photoswitch.

The fixing by the bracket has the advantages of being convenient for installing and fixing the device on a specific position, but has the defects that the distance between the light source and the photoswitch is too far, and stray light interference is easy to occur; because the light source and the light-operated switch are positioned at two sides of the liquid bag, the surface of the liquid bag easily reflects ambient light to cause the alarm to give an alarm by mistake; in the actual infusion treatment, a plurality of medicine solutions are often used for mixed treatment, when the medicine is added, the liquid bag needs to be repeatedly extruded to ensure that the liquid in the liquid bag is uniformly mixed, and the liquid bag is often extruded by family members of a patient, so that the device can send out wrong alarm reminding; the device can normally operate only when the light source and the light-operated switch form a specific angle, and the angle needs to be adjusted and confirmed every time of installation, so that the operation is complicated; improper contact by some patients can cause the light source to deflect from the light operated switch, which in turn can cause the device to fail; the whole volume of the whole device occupies too much, which is not beneficial to preservation and placement.

The prior art discloses an infusion alarm device like CN213554458U, including infusion alarm and anchor clamps, infusion alarm is through relay joint fixture, relay intercommunication the circuit in place of electro-magnet, the electro-magnet adsorbs by the magnetism thing of inhaling, first arm lock and second arm lock clamp infusion pipe infusion alarm built-in tension sensor, control end and acousto-optic device, and infusion bag or infusion bottle are connected to tension sensor's one end, and the other end connection control end, control end send alarm signal to signal receiving terminal through the communication end, and acousto-optic device and relay are connected and control to the control end. Monitoring the weight change of the infusion bag or the infusion bottle according to the tension sensor, wherein on one hand, the control end controls the acousto-optic device to give an alarm to remind the infusion process; on the other hand, the control end sends an alarm signal to the signal receiving end to inform a nurse to replace the infusion bag or the infusion bottle, and meanwhile, the clamp clamps the infusion tube to block the infusion tube, so that the possibility of blood backflow is directly cut off. When the device is used, one end of the tension sensor is required to be connected with an infusion bag or an infusion bottle, so that the whole occupied volume of the device is overlarge, and meanwhile, the device cannot digitally display predicted time data, so that the optimal prompt effect cannot be achieved.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

Aiming at the defects of the device provided by the prior art, the application provides the transfusion alarm which can predict the liquid empty condition in advance and can predict and digitally display the time required by the empty, which comprises a long rod clamping piece arranged on an infusion bag, wherein the long rod clamping piece comprises at least two rod arms, the first ends of the lever arms are connected and arranged at the top of the infusion bag in a mode of mutually independent rotation, the second ends are far away from each other to form a certain distance and are arranged at the two sides of the infusion bag, wherein the second end of the lever arm is connected with a pressure sensor, the distance between two sides of the infusion bag can be changed due to the volume change of the liquid in the infusion bag, and the pressure applied to the second end of the lever arm is changed, and the pressure sensor can convert the pressure applied to the second end of the lever arm into data and transmit the data.

According to a preferred embodiment, the pressure sensor is provided with a carrier with a backing layer, wherein a chip of the pressure sensor and a control and evaluation circuit are provided on the backing layer, the control and evaluation circuit is electrically connected to the chip of the pressure sensor, and the chip and the control and evaluation circuit are electrically connected to the lines of the backing layer. The analysis processing circuit has portions of the ASIC circuit and passive electrical components that are completely covered by molding material that extends to the backing layer. The molding material is provided with an accommodation space, wherein a chip of the pressure sensor is arranged in the accommodation space and covered with a gel cover. The parts of the ASIC circuit and the passive electrical components can be protected against the ingress of other media. The contact surface of the cushion layer is provided with a contact surface which is electrically connected with the control and analysis processing circuit, and the contact surface is respectively and electrically connected with the lead of the pressure sensor by conductive adhesive which is filled in the sealing material.

According to a preferred embodiment, the lever arm is provided with an analysis module which is able to deduce the time required for the liquid to run out based on the change in pressure data provided by the pressure sensor. The analysis module is preset with a database of a plurality of groups of standard curves determined based on the curve of pressure change born by the lever arm in the outflow process when different volumes of liquid are contained in the infusion bag, so that the pressure change data of the liquids contained in different volumes can be analyzed when the infusion bag is used, and the purpose of calculating the time required by the liquid in the infusion bag to flow out is achieved. The analysis module is connected with a display unit, and the display unit can digitally display the data of the time for which the liquid provided by the analysis module runs out.

According to a preferred embodiment, the top end of the long lever jaw is provided with a rotating element, preferably a rotatable rivet, so that the lever arm of the long lever jaw can perform the distance adjustment of the second end of the lever arm by means of the rotating element. The lever arm is also provided with a telescopic arm, so that the length of the lever arm is adjusted through the telescopic arm.

According to a preferred embodiment, the telescopic arm is adjusted by a buckle with a steel ball and is arranged inside the lever arm, the buckle with the steel ball is inserted inside the telescopic arm, the diameter of the buckle is equal to the inner diameter of the lever arm, and limiting holes distributed at equal intervals are formed in the surface of the lever arm. The diameter size of the buckle with the steel ball is equal to the inner diameter size of the telescopic arm, the buckle with the steel ball is of a T-shaped structure, the steel ball is arranged on the surface of the buckle with the steel ball, and the size of the steel ball is matched with the size of the limiting hole formed in the surface of the lever arm.

According to a preferred embodiment, the lever arm is provided with a sliding rail for slidably adjusting the telescopic length, the telescopic boom is arranged on the sliding rail, the sliding rail is divided into an inner rail and an outer rail, the inner rail is smoothly provided with rolling elements, the outer rail is designed to be serrated for locking the telescopic boom, and the telescopic boom slides only on the inner rail. In order to enable the telescopic arm to be fixed at any position on the sliding rail, a buckle is arranged on the sliding rail in a manner of locking the telescopic arm, the buckle is arranged below the contact position of the telescopic arm and the sliding rail, the transverse length of the buckle is long, two ends of the buckle extend to the outer rail of the sawtooth shape under a natural state so as not to slide up and down, a structure which retracts by pressing is arranged on the buckle, two ends of the buckle can be compressed by pressing, two ends of the buckle slide on the inner rail, when the pressing pressure disappears, the buckle recovers the original length, and two ends of the buckle return to the outer rail of the sawtooth shape so as to stop moving.

According to a preferred embodiment, a first alarm unit and a second alarm unit are respectively arranged in the lever arm, wherein one side of the first alarm unit, which is close to the infusion bag, is provided with reusable adhesive gel, an alarm indicator light and a magnetic control induction alarm, which are used for being adhered to the infusion bag so as to achieve an adhesion effect. One side, far away from infusion bag, of the first alarm unit is provided with a button cell for power supply, preferably, the button cell is a lithium battery. One side of the second alarm unit, which is close to the infusion bag, is provided with reusable sticky gel which is used for being pasted with the infusion bag to achieve an adhesion effect and rubidium-magnet stone which forms an adsorption relation with the magnetic control induction alarm, and the attraction force of the magnetic control induction alarm and the rubidium-magnet stone can generate pressure on the lever arm.

According to a preferred embodiment, the alarm indicator is connected with the sounder to can give sound prompt when the alarm indicator twinkles, the sounder includes vibrating diaphragm and drive the voice coil loudspeaker voice coil that is equipped with the voice coil loudspeaker voice coil lead-out wire of vibrating diaphragm vibration sound production, the vibrating diaphragm includes the dome unit and centers on the silica gel ring that the dome unit set up, the sounder still including be fixed in the circuit board of dome unit with set up in the intra-annular electric wire of silica gel, the voice coil loudspeaker voice coil lead-out wire electricity connect in the circuit board, the one end electricity of electric wire is connected in the circuit board, the other end electricity connect in the circular telegram of the signal of telecommunication input in order to realize the voice coil loudspeaker voice coil. The voice coil comprises an upper end portion close to the ball top unit and a lower end portion far away from the ball top unit, and the voice coil lead-out wire is led out from the upper end portion. Preferably, the silica gel ring includes a pair of relative long limit and a pair of relative minor face and connects gradually the arc limit of long limit and minor face, the electric lead inlays to be located arc limit department.

According to a preferred embodiment, a timing reminding module is arranged in the display unit and connected with the alarm indicator lamp, so that timing reminding can be performed through the alarm indicator lamp according to the preset reminding time of the timing reminding module.

According to a preferred embodiment, the infusion alarm shell is made of a noctilucent material, when light irradiates, the noctilucent material can absorb light, and after the illumination is turned off at night, the shell made of the noctilucent material can play a certain degree of auxiliary illumination effect and a certain prompting effect.

The principle of the invention is as follows: the pole arm of stock clamping piece is erect in infusion bag both sides, thereby first alarm unit with the second alarm unit is set up respectively in the infusion bag both sides, and the stability of alarm has been guaranteed in the adhesion effect of viscidity gel, and when being full of liquid in the infusion bag, infusion bag volume is great, consequently first alarm unit with the distance of second alarm unit is far away, at magnetic control induction alarm with under the attraction effect of rubidium magnetite, first alarm unit with the second alarm unit can be right the stock clamping piece produces pressure. When the liquid in the infusion bag begins to flow, the volume of the infusion bag begins to change, and meanwhile, the pressure applied to the long rod clamping piece also changes. The analysis module is preset with a plurality of groups of databases, and the databases contain a plurality of groups of standard curve data determined by the curve of the pressure change born by the lever arm in the process of outflow of liquid with different volumes contained in the infusion bag, so that the pressure change data of the liquid with different volumes contained in the infusion bag can be analyzed to achieve the purpose of accurately calculating the time required for the liquid in the infusion bag to flow out.

The invention has the advantages that:

firstly, the method comprises the following steps: the alarm predicts the flowing-out time of the residual liquid according to the volume change of the actual infusion bag, and can avoid the termination of the infusion due to the fact that the residual liquid is not much or the flow rate is too slow.

Secondly, the method comprises the following steps: the analysis module is preset with a plurality of groups of databases, and the databases are determined based on the curve of pressure change borne by the lever arm in the outflow process when different volumes of liquid are contained in the infusion bag, so that the pressure change data of the liquids contained in different volumes can be analyzed when the infusion bag is used, and the purpose of accurately calculating the time required by the liquid in the infusion bag to flow out is achieved.

Thirdly, the steps of: one end of the long rod clamping piece is rotatably connected, the other end of the long rod clamping piece can adjust the distance of the rod arm, so that infusion bags with different sizes can be matched and used, the fixing mode is simple, and the operation is easy.

Fourthly: the telescopic arm is arranged on the long rod clamping piece lever arm, the optimal position of the alarm can be adjusted according to the size difference of the infusion bag and the volume difference of the liquid in the infusion bag, and the measuring accuracy is improved.

Fifth, the method comprises the following steps: the separation of the infusion alarm main body and the infusion bag can be prevented through the flushable gel, and the measurement accuracy is ensured while a certain stable effect is achieved.

Drawings

FIG. 1 is a simplified side elevational schematic of the infusion alarm of the present invention;

FIG. 2 is a simplified front elevational schematic of the infusion alarm of the present invention;

FIG. 3 is a simplified two-sided schematic view of a first alarm unit of the present invention;

FIG. 4 is a simplified, single-sided schematic illustration of a second alarm unit of the present invention;

fig. 5 is a schematic view of the inverted clamp configuration of the infusion alarm of the present invention.

List of reference numerals

1: a long rod clamping piece; 2: a first alarm unit; 3: a second alarm unit; 4: a viscous gel; 5: an alarm indicator light; 6: a magnetic control induction alarm; 7: a button cell; 8: rubidium magnetite; 9: a display unit.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Including setting up the stock clamping piece 1 on infusion bag, stock clamping piece 1 is including being no less than two lever arms, and the first end of lever arm is connected and set up in the infusion bag top through the mode that can independently rotate each other, and the second end is kept away from each other and is formed certain distance and set up in the infusion bag both sides, and wherein, the second end of lever arm is connected with pressure sensor, because the volume change of the liquid in the infusion bag can lead to the distance change of infusion bag both sides, and then leads to the pressure that the second end of lever arm received changes, pressure sensor can with the pressure that the second end of lever arm received changes into data.

According to a preferred embodiment, the pressure sensor has a carrier with a backing layer, wherein the chip of the pressure sensor and the control and evaluation circuit, which is electrically connected to the chip of the pressure sensor, are both arranged on the backing layer and are electrically connected to the backing layer conductors. The analysis processing circuit has portions of the ASIC circuit and passive electrical components that are completely covered by molding material that extends to the backing layer. The molding material is provided with an accommodation space, wherein a chip of the pressure sensor is arranged in the accommodation space and covered with a gel cover. The parts of the ASIC circuit and the passive electrical components can be protected against the ingress of other media. The contact surface of the cushion layer is provided with a contact surface which is electrically connected with the control and analysis processing circuit, and the contact surface is respectively and electrically connected with the lead of the pressure sensor by conductive adhesive which is filled in the sealing material.

According to a preferred embodiment, the lever arm is provided with an analysis module which is able to deduce the time required for the liquid to run out based on the changes in the pressure data provided by the pressure sensor. The analysis module is preset with a database of a plurality of groups of standard curves determined based on the curve of pressure change born by a lever arm in the outflow process when different volumes of liquid are contained in the infusion bag, so that the pressure change data of the liquid containing different volumes can be analyzed to achieve the purpose of calculating the time required by the liquid in the infusion bag to flow out. The analysis module is connected with a display unit 9, and the display unit 9 can digitally display the data of the liquid flowing-out time provided by the analysis module.

According to a preferred embodiment, the long lever jaw 1 is provided with a turning element at its top end, so that the lever arm of the long lever jaw 1 can be adjusted in distance of the second end of the lever arm by means of the turning element. The lever arm is provided with a telescopic arm, so that the length of the lever arm can be adjusted by the telescopic arm.

According to a preferable embodiment, the telescopic arm is adjusted by a buckle with a steel ball and is arranged inside the lever arm, the buckle with the steel ball is inserted inside the telescopic arm, the diameter of the buckle is equal to the inner diameter of the lever arm, the solid steel ball is inserted inside the buckle with the steel ball, and the surface of the lever arm is provided with limit holes distributed at equal intervals. The diameter size of the buckle with the steel ball is equal to the inner diameter size of the telescopic arm, the buckle with the steel ball is arranged to be of a U-shaped structure, the steel ball is arranged on the surface of the buckle with the steel ball, and the size of the steel ball is matched with the size of the limiting hole formed in the surface of the lever arm. The telescopic arm can adjust the optimal position for setting the alarm according to the different sizes of the infusion bags and the different volumes of the liquid in the infusion bags, so that the measurement accuracy is improved.

According to a preferred embodiment, the lever arm is provided with a sliding track for slidably adjusting the telescopic length, the telescopic arm is arranged on the sliding track, the sliding track is divided into an inner track and an outer track, the inner track is smoothly provided with rolling elements, the outer track is designed to be serrated for locking the telescopic arm, and the telescopic arm only slides on the inner track. In order to make flexible arm can fix in the slide rail optional position, consequently set up the buckle on the slide rail according to the mode that can the flexible arm of locking, the buckle sets up in the below of the contact position of flexible arm and slide rail, the horizontal length of buckle is longer, both ends extend to on the outer track of cockscomb structure under the natural state, so that can not slide from top to bottom, set up to press the structure that contracts on the buckle, make and compress the buckle both ends through pressing, thereby make both ends slide on the inner track, when the pressure of pressing disappears, the buckle resumes original length, thereby both ends get back to on the outer track of cockscomb structure and stop moving.

According to a preferred embodiment, a first alarm unit 2 and a second alarm unit 3 are respectively arranged in the lever arm, wherein a reusable adhesive gel 4, an alarm indicator lamp 5 and a magnetic control induction alarm 6 are arranged on one side of the first alarm unit 2 close to the infusion bag for adhering to the infusion bag to achieve an adhesion effect. One side of the first alarm unit 2, which is far away from the infusion bag, is provided with a button cell 7 for supplying power. One side of the second alarm unit 3 close to the infusion bag is provided with reusable sticky gel 4 which is used for being pasted with the infusion bag to achieve the adhesion effect and rubidium magnet 8 which forms the adsorption relation with the magnetic control induction alarm 6, so that the attraction of the magnetic control induction alarm 6 and the round rubidium magnet 8 can generate pressure on the lever arm.

According to a preferred embodiment, alarm indicator 5 is connected with the vocal ware, thereby can give the sound prompt when alarm indicator 5 glimmers, the vocal ware includes the voice coil loudspeaker voice coil of vibrating diaphragm and drive vibrating diaphragm vibration sound production, the vibrating diaphragm includes the dome unit and surrounds the silica gel ring that the dome unit set up, the voice coil loudspeaker voice coil is equipped with the voice coil loudspeaker voice coil lead-out wire, miniature vocal ware still is including the circuit board that is fixed in the dome unit and setting up the electric lead in the silica gel ring, the voice coil loudspeaker voice coil lead-out wire is electric-connected in the circuit board, the one end electricity of electric lead is connected in the circuit board, the other end electricity is connected in the signal of telecommunication input end of vocal ware in order to realize the voice coil loudspeaker voice coil circular telegram. The voice coil comprises an upper end portion close to the ball top unit and a lower end portion far away from the ball top unit, and a voice coil lead-out wire is led out from the upper end portion. Preferably, the silica gel ring includes a pair of relative long limit and a pair of relative minor face and connects gradually the arc limit of long limit and minor face, and the electric lead inlays locates arc limit department.

According to a preferred embodiment, a timing reminding module is arranged in the display unit 9 and connected with the alarm indicator lamp 5, so that timing reminding can be performed through the alarm indicator lamp 5 according to the preset reminding time of the timing reminding module.

According to a preferred embodiment, the shell of the infusion alarm is made of a luminous material, when light irradiates, the luminous material can absorb the light, and after the illumination is turned off at night, the shell made of the luminous material can play a role in auxiliary illumination to a certain extent and a prompting role.

According to a preferred embodiment, during the use, medical personnel inject into liquid medicine earlier in the infusion bag, and the lever arm with stock clamping piece 1 again sets up in the infusion bag both sides, thereby first alarm unit 2 with second alarm unit 3 is set up respectively in the infusion bag both sides, through the pressing of appropriate dynamics, makes the adhesion of viscidity gel 4 on the infusion bag, waits liquid outflow behind the certain time, observes display unit 9 and whether normal display time, if normal demonstration then infusion alarm normal work.

The traditional method for detecting the flow rate is manually involved, that is, a medical worker needs to visually record the liquid consumption condition within a period of time to calculate the flow rate, but the method is quite labor-consuming, and particularly when the number of infusion patients is large, the problems of difficulty in manual allocation, manual confusion and invasion of important medical worker resources are very easy to occur, so that devices or equipment for automatically recording the infusion flow rate based on electronics or programs are also available on the market, but the solutions usually adopt additional physical equipment, such as a flow meter arranged on an infusion tube or an infusion bag, or adopt image recognition and gravity recognition to obtain the variation of the flow rate, some of the devices have the problems that some special environments cannot be used or the effect is poor, such as the image recognition solution under the dark or complex environment condition, and the devices generally have the problems of high cost, heavy weight and inconvenient device management caused by introducing a new detection device. Also, because the infusion process is not monitored by hospital personnel for a long period of time, the use of these sophisticated and valuable detectors may risk the equipment being damaged intentionally or unintentionally by the patient or by a person who is idle in the hospital.

Based on the above problem, the present invention further provides another embodiment, in which the fixing or placing of the infusion bag is implemented by using an inverted clamping structure instead of the suspension type scheme of the above embodiment. As shown in fig. 5, specifically, two lever arms of the long lever clamping piece 1 are arranged according to a mode that a clamping position is far away from the ground relative to a clamping position, wherein the clamping position is an end position where the lever arms contact an infusion bag and provide clamping force, the clamping position is a part where the two lever arms are connected in an elastic hinging mode, and because the two lever arms are connected only at one end of the clamping position, the long lever clamping piece 1 is formed into an included angle structure, and the included angle located at the clamping position represents the distance between the two lever arms. In this embodiment, the infusion apparatus further includes a controller, where the controller may be the analysis module in the above embodiment, and the controller is configured to obtain infusion parameters based on a change of the clip connection included angle caused by a loss of the liquid in the infusion bag when the infusion bag is clamped between the two lever arms, where the infusion parameters at least include an infusion flow rate and an infusion flow rate. Specifically, the infusion bag has the maximum drug content and the maximum volume in the initial state, is roughly in the shape of a water sac bag with two slightly protruding surfaces, and is clamped in the long rod clamping piece 1, and then the two surfaces of the infusion bag are contacted by the rod arms to form a clamping state. The lever arm at least comprises an initial state and a return-to-zero state, and a change process is provided between the initial state and the return-to-zero state, and the initial state, the return-to-zero state and the intermediate change state are all characterized by the included clamping position angle. The initial state refers to a clamping position included angle after the infusion bag in the initial state is clamped into the long rod clamping piece 1, and the clamping position included angle is the largest included angle in the infusion process; the zeroing state is the included angle of the clamping position of the long rod clamping piece 1 when the liquid medicine in the infusion bag basically runs out, the included angle at the moment is the minimum included angle in the infusion process, ideally, the included angle is generally 0, considering that the infusion bag also has a certain thickness, and meanwhile, certain infusion operation does not forcibly require that the medicine industry in the bag must run out completely to calculate the reason for the completion of the infusion, the included angle in the zeroing state is set to be a value close to 0, and can be set by the used medical personnel. The long lever jaw 1 is constructed by an elastic hinge such that when it is pulled apart and creates a clamping position angle greater than 0, it has a stress that causes the angle to change towards a state of 0, which stress can be provided by the above-mentioned elastic hinge, for example similar to the spring wire structure in a spring clamp. The controller can select various schemes for obtaining the included angle of the clamping position, wherein one scheme can be directly realized by adopting the existing included angle detector, and the other scheme can select a detector similar to a gyroscope structure. In another embodiment, a sliding switch similar to a circular sequential switch is used, in which a first conducting potential is provided, the first conducting potential is fixed to one of the lever arms and can rotate relative to the other lever arm along with the movement of the lever arm, an arc-shaped or circular electrical connection pad is further provided at the clamping position, the area of the electrical connection pad is at least ensured to cover the whole range which can be traveled by the first conducting potential along with the movement of the lever arm, a plurality of second conducting potentials arranged according to an angle are provided on the electrical connection pad, the starting point of the second conducting potential is provided on the lever arm without the first conducting potential, the starting second conducting potential represents a position with an included angle of 0 degree, and the subsequent second conducting potentials are sequentially arranged according to a certain angle interval. The first conducting potential is configured to form a loop with any second conducting potential when in electric contact, and the controller can know the value of the included angle at the moment by connecting the loop. When the loop is connected, specific loop data can be sent outwards to indicate the number of the current second conducting potential, the included angle can be obtained according to the number, or the current included angle can be obtained by calculating the number of loop conducting pulses sequentially generated in the process and combining the second conducting potential position relation corresponding to the preset number of pulses.

According to the scheme, the clamping position of the lever arm can be ensured to be contacted with the top end position of the infusion bag when the infusion bag with a certain standard shape is used, so that the situation that liquid is accumulated after the infusion bag exceeds the clamping range of the lever arm to enable the side wall of the infusion bag to exceed the lever arm and cause errors in calculation of infusion parameters by utilizing the included angle of the lever arm is avoided. On this basis, the lever arm can be set to be a sheet structure capable of fully wrapping the infusion bag, and the lever arm can contact the side wall of the infusion bag to the maximum extent so as to accurately feed back the volume change of the infusion bag. In other embodiments, a standard infusion bag other than that described above may be used, but the device may also be used if the volume of the particular infusion bag is known in advance in relation to the angle of the clip connection.

Preferably, the clamping site, due to its contact with the infusion port of the infusion bag, may be provided at this site or may itself be configured to clamp the infusion port. Preferably, when the clamping included angle is at or near zero, the opening area of the infusion opening is gradually reduced or even completely closed along with the approaching of the lever arms. The scheme realizes that the clamping structure endows the infusion bag with the clamping structure per se and can be fixed at a certain infusion height, and simultaneously can realize the detection of infusion parameters based on the deformation of the infusion bag. Adopt the device that hangs that itself just possesses the function of hanging as can detect the infusion velocity of flow simultaneously, realized a thing multipurpose, moreover, the steam generator is simple in structure, it is convenient to detect, do not relate to precision instrument, the damage risk is lower, use cost is less, be fit for using widely in a large scale, adopt the detector of this structure simultaneously, it is when carrying out the centre gripping and can carry out infusion flow measurement to infusion bag, also realized the fixed to the infusion mouth of pipe, the center of connection of centre gripping structure, also can be as the position of centre gripping infusion mouth of pipe simultaneously, thereby make the infusion mouth of pipe can be fixed in specific direction, in order to make things convenient for going on smoothly of infusion process, furthermore, by the lever arm contained angle that reduces gradually along with the liquid medicine in the infusion bag, make the infusion mouth of pipe can be gradually "pressed from the clamp" to less bore, cooperate the infusion mouth of pipe of certain thickness, this scheme can realize that the liquid measure reduces gradually along with the surplus liquid measure in the later stage of infusion and reduces to reduce to zero automatically, Need not the manual intervention ground, do not utilize electronic equipment to reduce the liquid medicine gradually at the circulation of infusion mouth until this infusion mouth of whole closing to this, this scheme has still realized the automatic control to the infusion mouth along with the infusion stage in fact, so that after the infusion is accomplished, can in time close the infusion mouth, has prevented the problem of blood backward flow to a certain extent.

According to a preferred embodiment, the above structure also achieves an effect of detecting whether or not the liquid in the infusion bag is present. Specifically, the controller inspects the change of the current included angle of the clamping position based on the change curve of the pre-stored included angle of the clamping position from each initial state to the zero state along with the time, and under the condition that the change of the current included angle of the clamping position does not accord with the corresponding change curve, the controller judges the softening or condensation state of the liquid medicine in the current infusion bag according to the increase or decrease of the relative change curve of the gradual reducing amount of the included angle of the clamping position in unit time, so that under the condition that the softening or condensation state exceeds the preset judgment value, at least one item of alarm information about softening or condensation is sent to the outside. According to the invention, the pre-stored change curve of the included angle is a change relation curve of the included angle and time acquired on the basis of constant or basically constant infusion speed, and can be acquired based on limited experiments, and under the condition that the liquid medicine in the infusion bag flows outwards at constant infusion speed, the change curve of the included angle of the clamping position acquired by the controller is in accordance with the preset change curve. However, in the case where the liquid medicine changes its property with time so as to become more viscous or softer, the amount of the taper of the included angle per unit time of the change curve of the nip angle acquired by the controller is decreased or increased relative to the preset change curve, or the inverse decrease or increase. The reason is that the volume change of the infusion bag is easier or more difficult due to the softening or condensation of the liquid medicine caused by the change of the physical properties of the liquid medicine, for example, in the case that the liquid medicine is gradually condensed or even caked, the angle change amount of the long rod clamping piece 1 in unit time is obviously reduced, and then the current state change of the liquid medicine in the infusion bag can be fed back in turn through the change of the parameter. The deterioration of the liquid during the infusion process is a problem that needs additional attention, and some special liquid medicines may deteriorate under certain circumstances due to unstable components, resulting in coagulation or softening of the liquid, for example, plasma may be partially coagulated in the accidental case of anticoagulant failure, and the plasma is summarized in the scope of the liquid medicine of the present application for convenience of description. For example, if a patient is left unattended while the coagulation of a medical fluid is taking place, and this is not uncommon in the current medical situation, there is a high possibility that an infusion accident may occur, and if the patient is required to re-infuse the medical fluid, a life-threatening accident may occur. However, in the prior art, the detection of the liquid medicine state in the infusion bag is often out of place, for example, the infusion amount is measured based on image detection, which generally only collects the image of the morse dropper to determine the infusion amount but cannot collect the liquid condition in the infusion bag, even if the image of the infusion bag is collected, how to obtain the liquid medicine coagulation condition in the bag in real time becomes a great difficulty, especially under the condition that the change is almost not visually distinguished; for example, a solution for detecting the amount of infusion by using a flow detector is generally arranged in the middle of an infusion tube, and because a morse dropper is arranged in the infusion tube, the flow rate of liquid in the infusion tube does not change basically in the initial period of time when the liquid medicine is just solidified, and there is a delay time when the flow rate of the liquid medicine is slowed down or accelerated to be reflected on the flow detector due to solidification or softening of the liquid medicine, but the detection of solidification or softening of the liquid medicine is just the most important initial feedback generated by a problem, and the 'later-known feeling' of the detector is one of the great inducements of irretrievable loss; the solution using weight detection cannot be used because the weight does not substantially jump under the above-mentioned deterioration conditions. Based on the above situation, this scheme has realized on the basis that can the fixed infusion bag of centre gripping, can detect the infusion parameter including flow and velocity of flow at least according to infusion bag's volume change, in order to make things convenient for medical personnel not under the condition of artifical guardianship patient infusion, can learn current infusion parameter in real time, still realized simultaneously to the softening of liquid medicine in the infusion bag or the rotten control of condensing, this kind of direct physical contact can feed back the rotten condition of liquid medicine in the bag very timely to infusion bag's detection scheme, provide fine reference for the early warning of proruption infusion accident. The part for alarming to the outside in the present embodiment may use part of the content of the alarm in the above embodiments, and besides, the display part and the lever arm extending part may use the corresponding content in the above embodiments.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. The infusion alarm is characterized by comprising a long rod clamping piece (1) arranged on an infusion bag, wherein the long rod clamping piece (1) comprises at least two rod arms, the first ends of the rod arms are connected with each other and can rotate relatively, the second ends of the rod arms are far away from each other to form a certain distance and are arranged on two sides of the infusion bag,

the second end of the lever arm is connected with a pressure sensor which converts the pressure received by the second end of the lever arm (1) which changes based on the distance between two sides of the infusion bag which changes due to the volume change of the liquid in the infusion bag into data and transmits the data,

the lever arm is provided with an analysis module capable of deducing the time required for the liquid to run out based on the change in pressure data provided by the pressure sensor.

2. The infusion alarm of claim 1, wherein the analysis module is configured to pre-set a database of sets of standard curves based on pressure change curves generated by the lever arm as a result of pressure exerted by infusion bags containing different volumes of fluid exiting therefrom,

and the pressure change data of the liquid with different volumes is analyzed when the infusion bag is used, so that the aim of calculating the time required by the liquid in the infusion bag to flow out is fulfilled.

3. Infusion alarm, its characterized in that, including long pole clamping piece (1), long pole clamping piece (1) is kept away from ground with the centre gripping position that constitutes its at least two lever arms of itself and the lever arm is close to the mode centre gripping fixed infusion bag on ground by the articulated clamp position that connects of elasticity, wherein, still includes the controller, the controller is configured to can be in infusion bag by two lever arm centre grippings in the middle condition along with the change that the loss of liquid medicine in the infusion bag produced and obtain infusion parameter based on clamp position contained angle, and wherein, infusion parameter includes infusion velocity of flow and infusion flow at least.

4. An infusion alarm according to claim 1 or 3, characterized in that a display unit (9) is connected to the analysis module, the display unit (9) being capable of digitally displaying data on the time at which the liquid supplied by the analysis module has run out.

5. The infusion alarm according to any one of claims 1-4, wherein the long-lever clip (1) is provided with a turning element at its top end, whereby the lever arm of the long-lever clip (1) can be adjusted in distance of its second end by means of the turning element.

6. An infusion alarm according to any of claims 1 to 5, wherein the lever arm is provided with a telescopic arm such that the length of the lever arm can be adjusted by extension and retraction of the telescopic arm.

7. The infusion alarm device according to any one of claims 1-6, wherein a first alarm unit (2) and a second alarm unit (3) are respectively arranged in the lever arm, wherein a reusable adhesive gel (4), an alarm indicator (5) and a magnetic control induction alarm (6) are arranged on one side of the first alarm unit (2) close to the infusion bag for adhering to the infusion bag to achieve an adhesion effect.

8. An infusion alarm according to any one of claims 1 to 7, characterised in that a button cell (7) for supplying power is provided on the side of the first alarm unit (2) remote from the bag.

9. The infusion alarm device according to any one of claims 1-8, wherein a reusable adhesive gel (4) for adhering to an infusion bag to achieve an adhesive effect and a rubidium/magnetite stone (8) in an adsorption relationship with the magnetic control induction alarm device (6) are disposed on a surface of the second alarm unit (3) close to the infusion bag, so that the attractive force between the magnetic control induction alarm device (6) and the rubidium/magnetite stone (8) can generate pressure on the lever arm.

10. The infusion alarm according to any one of claims 1 to 9, wherein the alarm indicator light (5) is connected to a sound generator so that the alarm indicator light (5) can be audibly prompted when it blinks.