CN112642018B - Blood sugar detection device matched with venous indwelling needle and detection method thereof - Google Patents
Blood sugar detection device matched with venous indwelling needle and detection method thereof Download PDFInfo
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- CN112642018B CN112642018B CN202011501854.XA CN202011501854A CN112642018B CN 112642018 B CN112642018 B CN 112642018B CN 202011501854 A CN202011501854 A CN 202011501854A CN 112642018 B CN112642018 B CN 112642018B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1468—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using chemical or electrochemical methods, e.g. by polarographic means
- A61B5/1473—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using chemical or electrochemical methods, e.g. by polarographic means invasive, e.g. introduced into the body by a catheter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1588—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
Abstract
The invention discloses a blood sugar detection device matched with a venous indwelling needle and a detection method thereof. The beneficial effects are that: this application combines together detection device main part and venous indwelling needle and detects the blood glucose in the venous blood vessel, but intermittent type nature detects, also sustainable detection, for prior art, can real-time supervision, it is more accurate to detect to glucose sensor gives the blood glucose level transmission blood glucose meter, blood glucose meter analysis real-time blood glucose level, sends numerical value to cell-phone or other communication equipment after the numerical value is stable, doctor, nurse or patient family members can know the blood glucose level, and the doctor can be according to blood glucose level regulation medicine.
Description
Technical Field
The invention relates to the field of blood sugar detection, in particular to a blood sugar detection device matched with a venous indwelling needle and a detection method thereof.
Background
The control capability of the diabetes patients on the blood sugar is reduced, the fluctuation of the blood sugar is more severe, the clinical situation of the fluctuation of the blood sugar of the patients who perform insulin pumping or intravenous drip is known, the continuous monitoring of the blood sugar is needed to be performed when the dosage of insulin is regulated, and the continuous monitoring of the blood sugar is mainly monitoring of glucose concentration in blood sugar measurement and continuous dynamic intercellular fluid at multiple time points at present. The operation of measuring blood sugar at multiple time points is troublesome, the patient is more painful, and the detection times are limited; the latter can record hundreds of blood glucose values every day by implanting a disposable glucose sensor subcutaneously into a patient through the cooperation of a data recorder, analysis software and the like, but the blood glucose values in interstitial fluid have serious hysteresis and cannot be reflected in real time.
In the prior art, reference is also made to application number 2015204537608, and the invention is a invasive pressure measuring arterial puncture needle capable of being used for continuous blood glucose monitoring. However, in clinical practice, arterial pressure measurement is often carried out on patients who may undergo major blood loss during operation, diseases with unstable hemodynamics, severe hypertension, myocardial infarction, heart failure and the like, and there is little common indication with continuous blood glucose detection, and arterial puncture cannot be carried out for blood glucose measurement, so that the arterial pressure measurement is not clinically applicable, and compared with arterial puncture, the use of venous indwelling needles is quite common. In addition, the clinical blood sugar measurement is based on venous blood sugar, the arterial blood sugar of a human body is slightly higher than venous blood sugar, and the arterial blood sugar measurement is easy to cause patients and families to be mistakenly higher in blood sugar.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a device capable of continuously detecting a blood glucose level, which can be used in connection with an intravenous needle.
The invention realizes the above purpose through the following technical scheme:
the blood sugar detection device matched with the venous indwelling needle comprises the venous indwelling needle and a glucose sensor, wherein the venous indwelling needle is provided with two passages, namely a first passage for connecting an infusion set and normal saline and a second passage for connecting a main body of the detection device;
the detection device main body comprises a fixed joint, a movable seat, a glucose sensor, a connecting wire and an electrode, wherein the fixed joint is connected with a second passage, a guide hole is formed in the middle of the fixed joint, and a soft rubber protective sleeve is connected between the fixed joint and the movable seat in a sealing manner; the electrode is arranged on the movable seat and penetrates through the middle of the movable seat so that one end of the electrode is positioned in the soft rubber protective sleeve, and the other end of the electrode is positioned at the outer side of the movable seat; the electrode is located the inside one end of soft rubber protective sheath and is connected with the spacing ring, connecting wire one end connection electrode, the other end passes the guiding hole and is connected with glucose sensor, the side of spacing ring is equipped with the expansion portion, when glucose sensor stretches into the vein, the expansion portion blocks up in the intersection of first passageway and second passageway, just the spacing ring is hugged closely the guiding hole outer wall.
As the important technical scheme of present case, vein keep somewhere the needle including the extension pipe of being connected with first passageway, second passageway, the other end of extension pipe is connected with transparent needle file, the needle file is connected with the pjncture needle, and transparent needle file and pjncture needle junction be the arc guide surface, can make glucose sensor get into the pjncture needle along the arc guide surface.
Preferably, the fixed joint is screwed with the second passage, and the glucose sensor is located in the second passage when the fixed joint is connected with the second passage.
Preferably, the movable seat is further provided with an exhaust pipe with one end open and the other end capable of being closed, one end of the exhaust pipe is communicated with the soft rubber protective sleeve, and the other end of the exhaust pipe is communicated with the outside of the movable seat.
Preferably, the glucose sensor is oval and has a smooth surface.
Preferably, the expansion part is made of rubber materials, is oval and is fixedly connected with the end part of the electrode, the minor axis diameter of the oval expansion part is not smaller than the diameter of the extension tube, and when the glucose sensor extends to a vein, the expansion part just plugs the intersection of the first passage and the second passage.
Preferably, the outer parts of the fixed joint and the movable seat are provided with shells, and two sliding grooves are symmetrically arranged on the inner wall of the shell relative to the folding protective sleeve and along the length direction of the folding protective sleeve; two motors are installed on the inner side wall of the shell close to the fixed joint, corresponding to the sliding grooves, the output shaft of each motor is connected with a screw rod, the screw rods are in threaded connection with sliding blocks, one side of each sliding block is in sliding connection with each sliding groove, and the other side of each sliding block is fixedly connected with the movable seat.
Preferably, the motor is electrically connected with a controller, and the controller is provided with a timer and a warning lamp;
the glucose sensor is connected with the electrode through a connecting wire, the electrode is electrically connected with the glucometer, and the glucometer is connected with the mobile phone through a wireless signal.
A detection method of a blood sugar detection device matched with a vein indwelling needle is characterized by comprising the following steps: the method comprises the following steps:
(1) Sterilizing the venous indwelling needle and the main body of the detection device;
(2) Connecting a first passage of the venous indwelling needle with an infusion apparatus and normal saline, and screwing a second passage with a fixed joint, wherein a glucose sensor is positioned in the second passage at the moment, clamping an extension tube of the venous indwelling needle, exhausting air in the indwelling needle to a soft rubber protective sleeve completely, filling liquid, sealing an exhaust tube, opening the extension tube of the venous indwelling needle, and penetrating a puncture needle into a vein and fixing the puncture needle properly;
(3) When blood sugar is detected, the motor is controlled by the controller to drive the screw rod to rotate, the sliding block moves along the sliding groove along the direction of the fixed joint along the sliding groove, so that the glucose sensor is conveyed into a vein through the extension pipe and the puncture needle, at the moment, the limiting ring is attached to the outer wall of the guide hole, the expansion part blocks the intersection of the first passage and the second passage, the normal saline stops transfusion, and the soft rubber protective sleeve is compressed when the glucose sensor is conveyed, so that internal liquid enters the extension pipe;
(4) The glucose sensor converts a glucose content signal in blood into an electric signal and transmits the electric signal to the electrode through a connecting wire, the electrode amplifies a blood glucose signal transmitted by the glucose sensor and transmits the amplified blood glucose signal to an external blood glucose meter through guiding, the blood glucose meter receives the electric signal, analyzes and decodes the electric signal to generate a blood glucose value, and transmits the blood glucose value to a mobile phone or other communication equipment through a wireless signal;
(5) After the detection is finished, the operation controller controls the motor to drive the movable seat to move in the direction away from the fixed joint, and the glucose sensor is pulled out of the vein, so that the intravenous needle infusion is not affected.
Further, in the step (3), when continuously detecting the blood glucose level, the glucose sensor is always left in the vein, the blood glucose level is continuously detected, and the physiological saline on the infusion set is replaced by low-concentration heparin saline, and 3-5 milliliters of saline is instilled per hour.
The beneficial effects are that: this application combines together detection device main part and venous indwelling needle and detects the blood glucose in the venous blood vessel, but intermittent type nature detects, also sustainable detection, for prior art, can real-time supervision, it is more accurate to detect to glucose sensor gives the blood glucose level transmission blood glucose meter, blood glucose meter analysis real-time blood glucose level, sends numerical value to cell-phone or other communication equipment after the numerical value is stable, doctor, nurse or patient family members can know the blood glucose level, and the doctor can be according to blood glucose level regulation medicine.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram of the detection of the present invention;
fig. 3 is a control diagram of the controller and motor of the present invention.
The reference numerals are explained as follows:
1. a puncture needle; 2. a transparent needle stand; 3. an extension tube; 4. a first passage; 5. a second passage; 6. a glucose sensor; 7. an expanding section; 8. fixing the joint; 8a, a guide hole; 9. a connecting wire; 10. a soft rubber protective sleeve; 11. an electrode; 12. a limiting ring; 13. a movable seat; 14. an exhaust pipe; 15. a slide block; 16. a screw rod; 17. a motor; 18. a controller; 18a, a timer; 18b, a warning lamp; 19. a blood glucose meter; 20. a mobile phone.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Referring to fig. 1-3, the invention provides a blood sugar detection device matched with a venous indwelling needle, which comprises the venous indwelling needle and a glucose sensor 6, wherein the venous indwelling needle is provided with two passages, namely a first passage 4 for connecting an infusion apparatus and physiological saline and a second passage 5 for connecting a main body of the detection device; the venous indwelling needle can be a circulating venous puncture indwelling needle in the market at present or can be a special venous indwelling needle. If the intravenous puncture indwelling needle in the prior art is used, only one passage is connected with the detection main body.
The detection device main body comprises a fixed joint 8, a movable seat 13, a glucose sensor 6, a connecting wire 9 and an electrode 11, wherein the fixed joint 8 is connected with the second passage 5, and optionally, the fixed joint 8 is connected with the second passage 5 through threads, so that the connection is more convenient. The guiding hole 8a has been seted up in the middle of the fixed joint 8, connecting wire 9 passes guiding hole 8a, has the effect of reason line, because when propelling movement glucose sensor 6, connecting wire 9 probably crooked, when the pullback, guiding hole 8a can straighten connecting wire 9 smoothly, connecting wire 9 adopts having elastic electrically conductive material to make. A soft rubber protective sleeve 10 is connected between the fixed joint 8 and the movable seat 13 in a sealing way, and preferably, the soft rubber protective sleeve 10 is fixedly connected with the fixed joint 8 by adopting a clamp; the electrode 11 is arranged on the movable seat 13 and penetrates through the middle of the movable seat 13, so that one end of the electrode 11 is positioned inside the soft rubber protective sleeve 10, and the other end of the electrode is positioned outside the movable seat 13; one end of the electrode 11, which is positioned in the soft rubber protective sleeve 10, is connected with a limiting ring 12, one end of the connecting wire 9 is connected with the electrode 11, and the other end of the connecting wire passes through the guide hole 8a to be connected with the glucose sensor 6. The side of spacing ring 12 is equipped with the expansion portion 7, when glucose sensor 6 stretches into the vein, the expansion portion 7 blocks up in the intersection of first passageway 4 and second passageway 5, just spacing ring 12 is hugged closely the guiding hole 8a outer wall, wherein, the diameter of spacing ring 12 is greater than the diameter of guiding hole 8a, the diameter of guiding hole 8a slightly is greater than the diameter of extension pipe 3, this structure can be convenient for medical personnel's operation, promotes movable seat 13, when spacing ring 12 and fixed joint 8 contact, glucose sensor 6 reaches the vein, and expansion portion 7 can block up first passageway 4 and second passageway 5 simultaneously, need not to close the transfusion system of normal saline, can improve the accuracy of detection. Further, during the transfer of the glucose sensor 6 to the venous blood vessel, the liquid in the rubber hose 10 may enter the extension tube 3 to be transferred into the venous blood vessel.
As the preferred embodiment of the scheme, the intravenous retention needle comprises an extension tube 3 connected with a first passage 4 and a second passage 5, the other end of the extension tube 3 is connected with a transparent needle seat 2 for facilitating observation and pushing of a glucose sensor 6, the needle seat is connected with a puncture needle 1, and the joint of the transparent needle seat 2 and the puncture needle 1 is an arc-shaped guide surface, so that the glucose sensor 6 can enter the puncture needle 1 along the arc-shaped guide surface.
Further, the fixed joint 8 is screwed to the second passage 5, and the glucose sensor 6 is located in the second passage 5 when the fixed joint 8 is connected to the second passage 5. When the glucose sensor 6 is required to be conveyed, the glucose sensor can be conveyed immediately, and the use is more convenient.
In order to facilitate the exhaust, the movable seat 13 is further provided with an exhaust pipe 14 with one end open and the other end capable of being closed, one end of the exhaust pipe 14 is communicated with the soft rubber protective sleeve 10, and the other end is communicated with the outside of the movable seat 13. The rubber sleeve can be compressed when pushing the glucose sensor 6, and the liquid in the rubber sleeve flows into the extension tube. In order to facilitate pushing and pulling back of the glucose sensor 6, the glucose sensor 6 is oval, and has a smooth surface, which also reduces thrombosis. Glucose comprises a semipermeable membrane, glucose oxidase and microelectrodes 11, and can convert the glucose content in blood into an electrical signal, which is transmitted to the electrodes 11 via the connection lines 9. Further, the expansion part 7 is made of rubber material, and the expansion part 7 is oval and fixedly connected with the end part of the electrode, the minor axis diameter of the expansion part 7 of the oval is not smaller than the diameter of the extension tube 3, preferably the minor axis diameter of the expansion part 7 is equal to the diameter of the extension tube 3, and when the glucose sensor 6 extends to a vein, the expansion part 7 just plugs the intersection of the first passage 4 and the second passage 5. The expansion part 7 at the end of the electrode 11 is penetrated by the connecting wire 9, the expansion part 7 can also protect the end of the electrode 11, and the electrode 11 does not enter the first passage 4 when the expansion part 7 is used for blocking the intersection of the first passage 4 and the second passage 5. When the glucose sensor 6 stretches into a vein, the limiting ring 12 is blocked on the end face of the fixed joint 8, so that limiting is realized.
As an important implementation mode of the scheme, in order to facilitate the slow automatic pushing of the glucose sensor 6, the outer parts of the fixed joint 8 and the movable seat 13 are provided with shells, and two sliding grooves are symmetrically arranged on the inner wall of the shell and are along the length direction of the folding protective sleeve; two motors 17 are installed on the inner side wall of the shell close to the fixed joint 8 and correspond to the sliding grooves, the output shaft of each motor 17 is connected with a screw rod 16, the screw rods 16 are in threaded connection with sliding blocks 15, one side of each sliding block 15 is in sliding connection with the corresponding sliding groove, and the other side of each sliding block 15 is fixedly connected with the movable seat 13. The screw 16 is a high-precision ball screw 16, and can drive the movable base 13 to move slowly. The motor 17 is electrically connected with a controller 18, and a timer 18a and a warning lamp 18b are arranged on the controller 18; when intermittently detecting blood sugar, the glucose sensor 6 is pushed into the vein to detect real-time blood sugar, the timer 18a counts time, and when the blood sugar detection is completed after a certain time is reached, the warning lamp 18b flashes, and the controller 18 automatically controls the motor 17 to pull out the glucose sensor 6. The glucose sensor 6 is connected with the electrode 11 through the connecting wire 9, the electrode 11 is electrically connected with the glucometer 19, and the glucometer 19 is connected with the mobile phone 20 through wireless signals. When insulin is clinically used for correcting blood sugar of a patient, the dosage is large, the effect of reducing blood sugar is not ideal, repeated debugging is often needed, an alarm threshold value for too high and too low blood sugar can be set on the mobile phone 20 or other communication equipment, and an alarm sound is sent when the alarm is triggered by too high or too low blood sugar value, so that a doctor and a nurse are reminded to adjust the dosage of insulin, the situation that the hypoglycemia is not found in time is avoided, and the life of the patient is endangered.
A method of testing a blood glucose testing device using a needle engaged with a venous indwelling needle, comprising the steps of:
(1) Sterilizing the venous indwelling needle and the main body of the detection device; the indwelling needle and the glucose sensor 6 are kept sterile.
(2) The first passage 4 of the venous indwelling needle is connected with an infusion apparatus and normal saline, the second passage 5 is connected with a fixed joint in a screwed mode, at the moment, the glucose sensor 6 is positioned in the second passage 5, the extension tube 3 of the venous indwelling needle is clamped, the air in the indwelling needle is exhausted until the soft rubber protective sleeve is filled with liquid, the exhaust tube 14 is closed, the extension tube 3 of the venous indwelling needle is opened, and the puncture needle pierces a vein and is fixed properly; filling the liquid in the rubber sock 10 can ensure no gas.
(3) When blood sugar is detected, the motor 17 is controlled by the controller 18 to drive the screw rod 16 to rotate, the sliding block 15 drives the movable seat 13 to move along the sliding groove towards the direction of the fixed joint 8, so that the glucose sensor 6 is sent into a vein through the extension tube 3 and the puncture needle 1, at the moment, the limiting ring 12 butts against the guide hole 8a, the expansion part 7 seals the intersection of the first passage 4 and the second passage 5, and physiological saline stops inputting the vein, so that the detection precision is prevented from being influenced. During intermittent collection, only the glucose sensor 6 is required to measure stable values for a certain time, and then the motor 17 is controlled to pull back the glucose sensor 6. When continuously detecting blood sugar level, the glucose sensor 6 is always left in the vein, the blood sugar level is continuously detected, the normal saline on the infusion set is changed into low-concentration heparin saline, and 3-5 milliliters of the low-concentration heparin saline is instilled per hour. When low-concentration heparin physiological saline is required to be instilled, the motor 17 is controlled to drive the movable seat 13 to be far away from the fixed joint 8, and the glucose sensor 6 is pulled out.
(4) The glucose sensor 6 converts a glucose content signal in blood into an electric signal, the electric signal is transmitted to the electrode 11 through the connecting wire 9, the electrode 11 amplifies a blood glucose signal transmitted by the glucose sensor 6 and then transmits the amplified blood glucose signal to the external blood glucose meter 19 through guiding, the blood glucose meter 19 receives the electric signal, analyzes and decodes the electric signal to generate a blood glucose value, and transmits the blood glucose value to the mobile phone 20 or other communication equipment through a wireless signal; when insulin is clinically used for correcting the blood sugar of a patient, the dosage is large, the hypoglycemia is caused, and the dosage is small, so that the blood sugar reducing effect is not ideal. Often requiring repeated debugging. An alarm threshold for too high or too low blood sugar can be set on the mobile phone 20 or other communication equipment, and an alarm sound can be sent when the alarm is triggered by too high or too low blood sugar value, so that a doctor and a nurse are reminded to adjust the insulin dosage. Avoid the failure of the timely discovery of the hypoglycemia and endanger the life of the patient.
(5) After the detection is finished, the operation controller 18 controls the motor 17 to drive the movable seat 13 to move in a direction away from the fixed joint 8, so that the glucose sensor 6 is pulled out of the vein, and the intravenous needle infusion is not affected.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. Blood sugar detection device with vein keep somewhere needle cooperation, its characterized in that: the device comprises a venous indwelling needle and a glucose sensor, wherein the venous indwelling needle is provided with two passages, namely a first passage connected with an infusion set and normal saline and a second passage connected with a main body of a detection device;
the detection device main body comprises a fixed joint, a movable seat, a glucose sensor, a connecting wire and an electrode, wherein the fixed joint is connected with a second passage, a guide hole is formed in the middle of the fixed joint, and a soft rubber protective sleeve is connected between the fixed joint and the movable seat in a sealing manner; the electrode is arranged on the movable seat and penetrates through the middle of the movable seat so that one end of the electrode is positioned in the soft rubber protective sleeve, and the other end of the electrode is positioned at the outer side of the movable seat; one end of the electrode, which is positioned in the soft rubber protective sleeve, is connected with a limiting ring, one end of the connecting wire is connected with the electrode, the other end of the connecting wire penetrates through the guide hole and is connected with the glucose sensor, an expanding part is arranged on the side edge of the limiting ring, when the glucose sensor stretches into a vein, the expanding part is blocked at the intersection of the first passage and the second passage, and the limiting ring is tightly attached to the outer wall of the guide hole;
the venous indwelling needle comprises an extension tube connected with the first passage and the second passage, the other end of the extension tube is connected with a transparent needle seat, the needle seat is connected with a puncture needle, and the joint of the transparent needle seat and the puncture needle is an arc-shaped guide surface, so that the glucose sensor can enter the puncture needle along the arc-shaped guide surface;
the movable seat is also provided with an exhaust pipe with one end open and the other end capable of being closed, one end of the exhaust pipe is communicated with the soft rubber protective sleeve, and the other end of the exhaust pipe is communicated with the outside of the movable seat;
the outer parts of the fixed joint and the movable seat are provided with shells, and two sliding grooves are symmetrically arranged on the inner wall of the shell and are symmetrical to the folding protective sleeve along the length direction of the folding protective sleeve; two motors are installed on the inner side wall of the shell close to the fixed joint, corresponding to the sliding grooves, the output shaft of each motor is connected with a screw rod, the screw rods are in threaded connection with sliding blocks, one side of each sliding block is in sliding connection with each sliding groove, and the other side of each sliding block is fixedly connected with the movable seat.
2. The blood glucose testing device mated with an intravenous needle of claim 1, wherein: the fixed joint is in threaded connection with the second passage, and the glucose sensor is located in the second passage when the fixed joint is connected with the second passage.
3. The blood glucose testing device for cooperation with an intravenous needle of claim 2, wherein: the glucose sensor is oval and has a smooth surface.
4. The blood glucose testing device mated with an intravenous needle of claim 1, wherein: the expanding part is made of rubber materials, is oval and is fixedly connected with the end part of the electrode, the diameter of the short shaft of the oval expanding part is not smaller than that of the extension tube, and when the glucose sensor extends to a vein, the expanding part just blocks the intersection of the first passage and the second passage.
5. The blood glucose testing device mated with an intravenous needle of claim 1, wherein: the motor is electrically connected with a controller, and a timer and a warning lamp are arranged on the controller;
the glucose sensor is connected with the electrode through a connecting wire, the electrode is electrically connected with the glucometer, and the glucometer is connected with the mobile phone through a wireless signal.
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| CN202011501854.XA CN112642018B (en) | 2020-12-18 | 2020-12-18 | Blood sugar detection device matched with venous indwelling needle and detection method thereof |
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| CN202011501854.XA CN112642018B (en) | 2020-12-18 | 2020-12-18 | Blood sugar detection device matched with venous indwelling needle and detection method thereof |
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| CN112642018B true CN112642018B (en) | 2023-05-23 |
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