CN110368549B - Portable liquid medicine injection instrument - Google Patents

Abstract

The invention relates to the technical field of medical instruments, in particular to a portable liquid medicine injection instrument which comprises a handle, a driving device and a liquid storage device, wherein the handle is connected with the driving device; the magnetic wire connecting device is characterized in that a buckle is arranged on the handle, a first clamping groove and a magnetic wire interface are arranged on the side wall of the driving device, the buckle is connected with the first clamping groove in a matched mode, and a handle signal is connected with the driving device signal through the magnetic wire interface; the lower end of the driving device is provided with a pin and a wrench; the upper end of the liquid storage device is provided with a clamping position and a second clamping groove; the pin is in fit connection with the second clamping groove, and the wrench is in fit connection with the clamping position; the portable liquid medicine injection instrument provided by the invention has high and stable precision, and can realize accurate pill quantity input through user operation; is small, portable and easy to carry.

Description

Portable liquid medicine injection instrument

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a portable liquid medicine injection instrument.

Background

Along with the development of medical technology, the precision of the medicine injection instrument is required to be higher and higher, and meanwhile, the size of the medicine injection instrument is expected to be smaller and smaller, so that a patient can conveniently carry the medicine injection instrument.

The utility model relates to a adopt intravenous infusion liquid medicine device of injecting ware of CN2905079Y, include: a liquid medicine intravenous infusion device; the intravenous infusion liquid medicine device includes: the device comprises a locking joint (1), a syringe (2) for placing injection liquid and a liquid pushing mechanism (3) arranged behind the syringe (2); further comprising: a shell (4) which can be fixedly arranged at the tail end of the injector (2) and the liquid pushing mechanism (3); in the housing (4) comprises: a spring (41) contacted with the tail end of the liquid pushing mechanism (3), and a pushing force locking rotary ring (42) at the contact part of the spring (41) and the tail end of the liquid pushing mechanism (3); the infusion device is suitable for the infusion treatment of intermittent or continuous small-volume slow infusion liquid medicine, and can be used for fixed and unfixed hospitalization and family patients due to the relatively small size, simple structure and light weight of the infusion device;

the utility model discloses a CN202236671U utility model discloses a disposable injector capable of being pre-filled with liquid medicine, which comprises a sleeve and a push rod positioned in the sleeve, wherein the top end of the sleeve is provided with a joint, and the sleeve consists of a cylindrical outer sleeve and a cylindrical inner sleeve matched with the cylindrical outer sleeve; the top wall of the cylindrical inner sleeve is provided with a communicating structure which can communicate the inner sleeve with the outer sleeve, and the connecting structure is tightly matched with the outer sleeve; the push rod is arranged in the inner sleeve and forms an inner chamber for containing liquid medicine with the inner sleeve; and a sealing protective cap is arranged on the joint at the top end of the outer sleeve.

Above-mentioned two patents can not realize quantitative liquid medicine of annotating, and the infusion precision is unstable, also can not realize bubble, jam and drop warning moreover for the patient can not in time discover when taking place danger, and the patient can not carry out quantitative input medicament through accurate debugging moreover.

Disclosure of Invention

Aiming at the problems, the invention is realized by the following technical scheme: a portable liquid medicine injection instrument comprises a handle, a driving device and a liquid storage device; the magnetic wire connecting device is characterized in that a buckle is arranged on the handle, a first clamping groove and a magnetic wire interface are arranged on the side wall of the driving device, the buckle is connected with the first clamping groove in a matched mode, and a handle signal is connected with the driving device signal through the magnetic wire interface; the lower end of the driving device is provided with a pin and a wrench; the upper end of the liquid storage device is provided with a clamping position and a second clamping groove; the pin is in fit connection with the second clamping groove, and the wrench is in fit connection with the clamping position;

the driving device comprises an MCU and a motor, a handle switch is arranged on the handle, the MCU controls the handle, when a patient presses the handle switch once, the MCU controls the motor to rotate for a plurality of turns, and therefore pulse infusion is achieved.

Preferably, the driving device further comprises a liquid squeezing module, wherein the liquid squeezing module comprises a silicone tube, a cam assembly, a left side switch valve, a right side switch valve and a squeezing valve;

the MCU controls the intermittent rotation of the motor, the motor is electrically connected with the cam assembly, the cam assembly is sequentially connected with the left side switch valve, the extrusion valve and the right side switch valve from left to right, and the lower ends of the left side switch valve, the extrusion valve and the right side switch valve are provided with silicone tubes; when the motor rotates, the cam component is driven to rotate, and the cam component drives the left switch valve, the extrusion valve and the right switch valve to perform linear motion; the right side switch valve stretches out and compresses tightly the silicone tube, and the extrusion valve stretches out and extrudes the liquid in the silicone tube, and the left side switch valve stretches out and compresses tightly the silicone tube, then right side switch valve and extrusion valve retract in proper order again, and it is full with liquid to form the negative pressure in the silicone tube, and a crowded liquid cycle is ended.

Preferably, the liquid squeezing module comprises a bubble alarm device, a blockage alarm device and a falling alarm device; and the MCU controls the bubble alarm device, the blockage alarm device and the falling alarm device.

Preferably, the liquid squeezing module further comprises a left side pressure sensor probe and a right side pressure sensor probe;

the left side pressure sensor probe and the right side pressure sensor probe are respectively located on the left side and the right side of the right side switch valve, the left side pressure sensor probe and the right side pressure sensor probe are located above the silicone tube and used for detecting liquid pressure on the silicone tube, and therefore bubble alarm, blockage alarm and falling alarm are achieved according to pressure displayed by the left side pressure sensor probe and the right side pressure sensor probe.

Preferably, the method for realizing the bubble alarm comprises the following steps:

s1: acquiring the maximum value, the minimum value and the average value of the pressure in a single circle of the left pressure sensor probe;

s2: obtaining the difference between the maximum value and the average value, wherein the difference between the average value and the minimum value forms two sequences, namely MA and AM;

s3: detecting whether the latest MA is compared with the last 5 MA and is less than 150, and detecting whether the latest AM is compared with the last 5 AM and is less than 40, if the latest MA is less than 150 and the latest AM is less than 40, jumping to step S4; if not, returning to the step S1;

s4: the MCU controls the number of liquid squeezing turns of the liquid squeezing module to delay 25 turns; thereby realizing the bubble alarm.

The method for realizing the falling alarm comprises the following steps:

s1: acquiring the average value of left pressure sensor probes in a single circle, and forming a sequence;

s2: judging whether the latest value of the sequence is greater than 800, or whether the average value is continuously increased for 2 times, wherein the amplitude is greater than 40 every time, or whether the average value is continuously increased for 7 times, and the accumulated amplitude is greater than 55; if yes, a jam alarm is realized, otherwise, the process returns to step S1.

The method for realizing the blockage alarm comprises the following steps:

s1: acquiring the average value of the left pressure sensor probe and the right pressure sensor probe in a single circle, and forming sequences AI and AO;

s2: judging whether the latest AI value is smaller than the previous 2 AI values and the reduction is more than 25; if not, return to step S1, if yes, go to step S3;

s3: judging whether the difference value of the 2 nd AI and the previous 8 AI is less than +/-10;

s4: judging that the latest AO value is smaller than the last 5 AO values and the amplitude is larger than 50, if not, returning to the step S1; if yes, go to step S5;

s5: judging whether the difference value of the 5 th AO compared with the first 8 AO is less than +/-15;

s6: if the difference between the 2 nd AI and the first 8 th AI is less than + -10 and the difference between the 5 th AO and the first 8 th AO is less than + -15 in step S3; a drop alarm is implemented and if not, the process returns to step S1.

Compared with the prior art, the invention has the beneficial effects that:

(1) the liquid storage device is connected with the clamping groove and the clamping position on the liquid storage device through the pin and the wrench on the driving device, so that the liquid storage device is prevented from being separated from the driving device in the using process, the liquid storage device is tightly matched with the driving device without a gap, namely, the infusion precision is stable, and meanwhile, the precision consistency of matching different liquid storage devices with the same driving device can be ensured;

(2) the handle is fixedly connected with the clamping groove on the driving device through the buckle on the handle, so that the handle is prevented from falling off in the use process;

(3) the invention can control the input of PCA pill quantity through the handle, the minimum can be set to 0.1ml, and the pill quantity input is accurate;

(4) the invention can realize bubble alarm by calculating the initial value of the left pressure sensor probe, the change trend of the maximum value and the minimum value in the liquid squeezing process;

by calculating the variation trend of the left and right pressure sensor probes in the liquid squeezing process, the blockage alarm can be realized;

the pipeline falling alarm can be realized by calculating the change trend of the left and right pressure sensor probes in the liquid squeezing process.

(5) The patient can adjust the pill quantity input in the medicine injection process through self intention and demand by pressing the handle switch so as to improve the user experience in the use process.

Drawings

FIG. 1 is a schematic view of the general structure of a portable liquid medicine injection apparatus according to the present invention;

FIG. 2 is an exploded view of the portable liquid injection apparatus according to the present invention;

FIG. 3 is an assembly view of the driving unit and the reservoir unit according to the present invention;

FIG. 4 is a cross-sectional view of a wringing module provided by the present invention;

FIG. 5 is a flow chart of the present invention for implementing a bubble alarm;

FIG. 6 is a flow chart of the present invention for achieving plugging;

FIG. 7 is a flow chart of the present invention for implementing a drop-off alarm;

the specific meanings of the symbols in the drawings are as follows:

1. a handle; 2. a drive device; 3. a liquid storage device B; 4. buckling; 5. a first card slot; 6. a magnetic wire interface; 7. a wrench; 8. a pin; 9: clamping; 10. a second card slot; 11. a motor; 12. a cam assembly; 13. a left side switch valve; 14. an extrusion valve; 15. a right switch valve; 16. a silicone tube; 17. a left side pressure sensor probe; 18. right side pressure sensor probe.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

Referring to fig. 1-4, the invention is realized by the following technical scheme: aiming at the problems, the invention is realized by the following technical scheme: a portable liquid medicine injection instrument comprises a handle 1, a driving device 2 and a liquid storage device 3; the handle 1 is provided with a buckle 4, one side wall of the driving device 3 is provided with a first clamping groove 5 and a magnetic wire interface 6, the buckle 4 is matched and connected with the first clamping groove 5, and the buckle 4 on the handle and the first clamping groove 5 on the driving device are fixedly connected together to prevent the handle from falling off in the use process, and the magnetic wire interface 6 is used for connecting a handle signal with the driving device signal; the lower end of the driving device 2 is provided with a pin 8 and a wrench 7; the upper end of the liquid storage device is provided with a clamping position 9 and a second clamping groove 10; the pin 8 is connected with the second clamping groove 10 in a matching manner, and the wrench 7 is connected with the clamping position 9 in a matching manner; the invention ensures that the liquid storage device is not separated from the driving device in the using process by connecting the pin and the wrench on the driving device with the second clamping groove and the clamping position on the liquid storage device, and the matching of the liquid storage device and the driving device also has important influence on the precision of the input pill dosage. The driving device 2 provided by the invention comprises an MCU and a motor, wherein a handle switch is arranged on the handle 1, the MCU controls the handle 1, and when a patient presses the handle switch once, the MCU controls the motor to rotate for a plurality of turns, so that pulse infusion is realized.

The handle provided by the invention is used for enabling a patient to control the input amount autonomously, and the patient can set the input of the pill amount of each PCA through the handle, and the minimum can be set to 0.1 ml.

The driving device 2 provided by the invention further comprises a liquid squeezing module, wherein the liquid squeezing module comprises a silicone tube 16, a cam assembly 12, a left switch valve 13, a right switch valve 14 and a squeezing valve 15;

the MCU provided by the invention controls the intermittent rotation of the motor, the motor is electrically connected with the cam assembly 12, the cam assembly 12 is sequentially connected with the left switch valve 13, the squeezing valve 14 and the right switch valve 15 from left to right, and the lower ends of the left switch valve 13, the squeezing valve 14 and the right switch valve 15 are provided with silicone tubes 16; when the motor rotates, the cam group 12 is driven to rotate, and the cam group 12 drives the left switch valve, the extrusion valve and the right switch valve to perform linear motion; the right switch valve 15 extends out of the compression silicone tube 16, the extrusion valve 14 extends out of the silicone tube 16 to extrude liquid in the silicone tube 16, the left switch valve 13 extends out of the compression silicone tube 16, then the right switch valve 15 and the extrusion valve 14 retract in sequence, negative pressure is formed in the silicone tube to fill the liquid, and a liquid extrusion period is finished.

The liquid squeezing module provided by the invention comprises a bubble alarm device, a blockage alarm device and a falling alarm device; and the MCU controls the bubble alarm device, the blockage alarm device and the falling alarm device.

The liquid squeezing module provided by the invention further comprises a left pressure sensor probe 17 and a right pressure sensor probe 18; the left side pressure sensor probe 17 and the right side pressure sensor probe 18 are respectively located on the left side and the right side of the right side switch valve 15, the left side pressure sensor probe 17 and the right side pressure sensor probe 18 are located above the silicone tube 16 and used for detecting liquid pressure on the silicone tube 16, and therefore bubble alarm, blockage alarm and falling alarm are achieved according to pressure displayed by the left side pressure sensor probe and the right side pressure sensor probe.

Referring to fig. 5, the method for implementing a bubble alarm according to the present invention includes the following steps:

s1: acquiring the maximum value, the minimum value and the average value of the pressure in the liquid squeezing single circle of the left pressure sensor probe;

s2: obtaining the difference between the maximum value and the average value, wherein the difference between the average value and the minimum value forms two sequences, namely MA and AM;

s3: detecting whether the latest MA is compared with the last 5 MA and is less than 150, and detecting whether the latest AM is compared with the last 5 AM and is less than 40, if the latest MA is less than 150 and the latest AM is less than 40, jumping to step S4; if not, returning to the step S1;

s4: the MCU controls the number of liquid squeezing turns of the liquid squeezing module to delay 25 turns; thereby realizing the bubble alarm.

Here, the liquid squeezing single circle is a liquid squeezing period; the left side pressure sensor probe is the outlet sensor shown in fig. 5.

Referring to fig. 6, the method for implementing a jam alarm according to the present invention includes the following steps:

s1: acquiring the average value of left pressure sensor probes in a single circle, and forming a sequence;

s2: judging whether the latest value of the sequence is greater than 800, or whether the average value is continuously increased for 2 times, wherein the amplitude is greater than 40 every time, or whether the average value is continuously increased for 7 times, and the accumulated amplitude is greater than 55; if yes, a jam alarm is realized, otherwise, the process returns to step S1.

Here, the liquid squeezing single circle is a liquid squeezing period; the left side pressure sensor probe is the outlet sensor shown in fig. 6.

Referring to fig. 7, the method for implementing drop alarm of the present invention includes the following steps:

s1: acquiring the average value of the left pressure sensor probe and the right pressure sensor probe in a single circle, and forming sequences AI and AO;

s2: judging whether the latest AI value is smaller than the previous 2 AI values and the reduction is more than 25; if not, return to step S1, if yes, go to step S3;

s3: judging whether the 2 nd AI is smaller than the previous 8 AI difference values by 10;

s4: judging that the latest AO value is smaller than the last 5 AO values and the amplitude is larger than 50, if not, returning to the step S1; if yes, go to step S5; s5: judging whether the difference value of the 5 th AO compared with the first 8 AO is less than 15;

s6: if the difference between the 2 nd AI and the previous 8 th AI is smaller than 10 and the difference between the 5 th AO and the previous 8 th AO is smaller than 15 in step S3; a drop alarm is implemented and if not, the process returns to step S1.

Here, the liquid squeezing single circle is a liquid squeezing period; the left side pressure sensor probe is the outlet sensor shown in fig. 7. The right side pressure sensor probe is the inlet sensor shown in fig. 7.

The above-described series of detailed descriptions are merely specific to possible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and various changes made without departing from the gist of the present invention within the knowledge of those skilled in the art are included in the scope of the present invention.

Claims (1)

1. A portable liquid medicine injection instrument comprises a handle, a driving device and a liquid storage device; the magnetic wire connecting device is characterized in that a buckle is arranged on the handle, a first clamping groove and a magnetic wire interface are arranged on the side wall of the driving device, the buckle is connected with the first clamping groove in a matched mode, and a handle signal is connected with the driving device signal through the magnetic wire interface; the lower end of the driving device is provided with a pin and a wrench; the upper end of the liquid storage device is provided with a clamping position and a second clamping groove; the pin is in fit connection with the second clamping groove, and the wrench is in fit connection with the clamping position;

the driving device comprises an MCU and a motor, a handle switch is arranged on the handle, and when a patient presses the handle switch once, the MCU controls the motor to rotate for a plurality of turns, so that pulse infusion is realized;

the driving device further comprises a liquid squeezing module, and the liquid squeezing module comprises a silicone tube, a cam assembly, a left side switch valve, a right side switch valve and a squeezing valve;

the MCU controls the intermittent rotation of the motor, the motor is electrically connected with the cam assembly, the cam assembly is sequentially connected with the left side switch valve, the extrusion valve and the right side switch valve from left to right, and the lower ends of the left side switch valve, the extrusion valve and the right side switch valve are provided with silicone tubes; when the motor rotates, the cam component is driven to rotate, and the cam component drives the left switch valve, the extrusion valve and the right switch valve to perform linear motion; the right side switch valve extends out of the compression silicone tube, the extrusion valve extends out of the compression silicone tube to extrude liquid in the silicone tube, the left side switch valve extends out of the compression silicone tube, then the right side switch valve and the extrusion valve retract in sequence, negative pressure is formed in the silicone tube to fill the silicone tube with the liquid, and a liquid extrusion period is finished;

the liquid squeezing module comprises a bubble alarm device, a blockage alarm device and a falling alarm device; the MCU controls the bubble alarm device, the blockage alarm device and the falling alarm device;

the liquid squeezing module further comprises a left pressure sensor probe and a right pressure sensor probe;

the left pressure sensor probe and the right pressure sensor probe are respectively positioned on the left side and the right side of the right switch valve, the left pressure sensor probe and the right pressure sensor probe are positioned above the silicone tube and are used for detecting the liquid pressure on the silicone tube, and the bubble alarm, the blockage alarm and the falling alarm are realized according to the pressure displayed by the left pressure sensor probe and the right pressure sensor probe;

the method for realizing the bubble alarm comprises the following steps:

s1: acquiring the maximum value, the minimum value and the average value of the pressure in a single circle of the left pressure sensor probe;

s2: obtaining the difference between the maximum value and the average value, wherein the difference between the average value and the minimum value forms two sequences, namely MA and AM;

s3: detecting whether the latest MA is compared with the last 5 MA and is less than 150, detecting whether the latest AM is compared with the last 5 AM and is less than 40, if the latest MA is less than 150 and the latest AM is less than 40, executing the step S4, if not, returning to the step S1;

s4: the MCU controls the number of liquid squeezing turns of the liquid squeezing module to delay 25 turns; thereby realizing bubble alarm;

the method for realizing the blockage alarm comprises the following steps:

s1: acquiring the average value of left pressure sensor probes in a single circle, and forming a sequence;

s2: judging whether the latest value of the sequence is greater than 800, or whether the average value is continuously increased for 2 times, wherein the amplitude is greater than 40 every time, or whether the average value is continuously increased for 7 times, and the accumulated amplitude is greater than 55; if yes, a blockage alarm is realized, if not, the step S1 is returned to;

the method for realizing the falling alarm comprises the following steps:

s1: acquiring the average value of the left pressure sensor probe and the right pressure sensor probe in a single circle, and forming sequences AI and AO;

s2: judging whether the latest AI value is smaller than the previous 2 AI values and the reduction is more than 25; if not, return to step S1, if yes, go to step S3;

s3: judging whether the difference value of the 2 nd AI and the previous 8 AI is less than +/-10;

s4: judging that the latest AO value is smaller than the last 5 AO values and the amplitude is larger than 50, if not, returning to the step S1; if yes, go to step S5;

s5: judging whether the difference value of the 5 th AO compared with the first 8 AO is less than +/-15;

s6: if the difference between the 2 nd AI and the first 8 th AI is less than + -10 and the difference between the 5 th AO and the first 8 th AO is less than + -15 in step S3; a drop alarm is implemented and if not, the process returns to step S1.

Images