CN115212390A - Medical liquid injection device with monitoring venous pressure - Google Patents

Medical liquid injection device with monitoring venous pressure Download PDF

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Publication number
CN115212390A
CN115212390A CN202210982239.8A CN202210982239A CN115212390A CN 115212390 A CN115212390 A CN 115212390A CN 202210982239 A CN202210982239 A CN 202210982239A CN 115212390 A CN115212390 A CN 115212390A
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CN
China
Prior art keywords
injection
pressure
chamber
pressure monitoring
monitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210982239.8A
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Chinese (zh)
Inventor
范隆华
王晨
杨晓虎
郭振宇
朱广浪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingpu Branch Of Zhongshan Hospital Affiliated To Fudan University Shanghai Qingpu District Central Hospital
Original Assignee
Qingpu Branch Of Zhongshan Hospital Affiliated To Fudan University Shanghai Qingpu District Central Hospital
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Qingpu Branch Of Zhongshan Hospital Affiliated To Fudan University Shanghai Qingpu District Central Hospital filed Critical Qingpu Branch Of Zhongshan Hospital Affiliated To Fudan University Shanghai Qingpu District Central Hospital
Priority to CN202210982239.8A priority Critical patent/CN115212390A/en
Publication of CN115212390A publication Critical patent/CN115212390A/en
Pending legal-status Critical Current

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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
    • A61M5/178—Syringes
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • 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
    • A61M5/48—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 having means for varying, regulating, indicating or limiting injection pressure
    • A61M5/486—Indicating injection pressure

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention relates to a medical liquid injection device capable of monitoring venous pressure, which comprises an injection handle, an injection tube, an injection needle and a pressure monitor, wherein connecting columns are correspondingly arranged at two ends of the pressure monitor respectively, slotted holes are formed in the connecting columns, and internal threads are arranged on the slotted holes; the head end of the injection tube and the tail end of the injection needle are both provided with a circle of external threads, and the injection tube and the injection needle are respectively in threaded connection with connecting columns at two ends of the pressure monitor; its advantages are: the invention has simple structure, convenient operation and lower manufacturing cost, can monitor the pressure of the injected vein in real time, effectively reduces the occurrence of drug leakage or injection position error caused by overlarge pressure during injection, and provides safety guarantee for the treatment of patients.

Description

Medical liquid injection device with monitoring venous pressure
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medical liquid injection device capable of monitoring venous pressure.
Background
With the development and progress of medical technology, the precise treatment of diseases has become the direction of clinical development, and intravenous injection is the routine operation of clinical work and is often used for drug injection, local anesthesia administration, direct injection treatment of lesion sites, and the like. At present, the conventional injector is basically used for medicine injection in clinic, the injection is convenient and low in cost, the injection depends on experience and proficiency of medical workers, but the requirement of partial medicines on the injection speed is relatively strict, the operation only depends on experience and feeling, great uncertainty and hidden dangers exist, in the operation process, because injection feedback pressure is too high, an injection needle head and a needle cylinder fall off, medicines leak out, or the medicines are injected into non-venous parts to cause injury, the medicine action effect and the pain feeling of patients are directly influenced, even the potential safety hazard is caused, and serious consequences are caused.
The Chinese patent application: CN201120127155.3 discloses a syringe, comprising: a barrel defining a barrel cavity therein; the front end of the push rod is inserted into the barrel cavity, and the rear end of the push rod extends backwards from the barrel cavity; the piston is arranged at the front end of the push rod to divide the cylinder cavity into a first front cavity and a first rear cavity, and the piston can move in the cylinder cavity along with the push rod; the pressure sensor is arranged on the push rod and used for detecting the fluid pressure in the first front cavity; the processing unit is connected with the pressure sensor and used for processing a fluid pressure signal detected by the pressure sensor to obtain a fluid pressure value in the first front cavity; and a display unit connected with the processing unit to display the pressure value. The device can inject quickly and conveniently to a certain extent and ensure that the pressure of the injected gas is in a safe range. However, the electronic components adopted in the above patents are complex in overall structure, and the problems of sealing and high manufacturing cost must be considered in the manufacturing and using processes, so that the disadvantages exist in the practical application process.
The Chinese patent application: CN203029735U discloses an injector, including the syringe cylinder that has the drain pipe and the syringe needle that has the syringe needle seat, the syringe needle passes through the syringe needle seat and cup joints on the drain pipe of syringe cylinder, is provided with the fan-shaped flange of bisymmetry at syringe needle seat bottom, is provided with the fan-shaped spacing draw-in groove of the fan-shaped flange of bisymmetry place syringe needle seat at the top of syringe cylinder. The syringe in the device passes through the spacing draw-in groove that sets up on the cylinder and the mutual rotatory block of flange that sets up on the syringe needle seat, has strengthened the fixed between cylinder and the syringe needle, has avoided because too big drawback that leads to the syringe needle to drop of pressure in the cylinder, nevertheless wholly can't predict and monitor the pressure of injecting, and it relies on operating personnel's experience and consummate degree completely, leads to the fact unnecessary potential safety hazard to the patient very easily.
In view of the above, there is a need for a medical fluid injection device with venous pressure monitoring function, which has a simple structure and is easy to operate, and can monitor the venous pressure of a bolus injection in real time, and reduce the possibility of drug leakage or injection position error caused by overlarge pressure during bolus injection.
Disclosure of Invention
It is an object of the present invention to solve the above-mentioned problems, and to provide a medical fluid injection apparatus having a function of monitoring a venous pressure.
In order to realize the purpose, the invention adopts the technical scheme that:
a medical liquid injection device capable of monitoring venous pressure comprises an injection handle, an injection cylinder, an injection needle and a pressure monitor, wherein connecting columns are correspondingly arranged at two ends of the pressure monitor respectively, slotted holes are formed in the connecting columns, and internal threads are arranged on the slotted holes; the head end of the injection tube and the tail end of the injection needle are both provided with a circle of external threads, and the injection tube and the injection needle are respectively in threaded connection with connecting columns at two ends of the pressure monitor.
In the above medical liquid injection device with monitoring venous pressure, as a preferred scheme, the pressure monitor is integrally in a Chinese character 'zhong' shape structure, and further comprises an injection chamber and a pressure monitoring chamber, wherein the injection chamber is communicated with the slotted hole in the connecting column, an opening is reserved on one side of the injection chamber, and the opening is further communicated with the pressure monitoring chamber.
In the above medical liquid injection device with venous pressure monitoring function, as a preferred scheme, the pressure monitoring chamber is integrally of a U-shaped structure, a piston is arranged in the pressure monitoring chamber, the upper end and the lower end of the piston are correspondingly filled in the pressure monitoring chamber, the tail end of the piston is also connected with a spring, one end of the spring is connected with the inner wall of the tail end of the pressure monitoring chamber, and the inner wall of the tail end of the pressure monitoring chamber is also provided with an atmosphere communication hole.
In the above medical liquid injection device with monitoring venous pressure, as a preferable scheme, the upper surface of the pressure monitoring chamber is further provided with different color areas, the different color areas are green, yellow and red, and each color corresponds to different pressure values respectively.
In the above medical fluid injection device with monitoring of venous pressure, as a preferred scheme, the injection chamber is in a concave structure as a whole, and the concave part of the injection chamber is matched with the pressure monitoring chamber.
The invention has the advantages that:
1. the invention has simple structure, convenient operation and lower manufacturing cost, can monitor the pressure of the injected vein in real time, effectively reduces the occurrence of drug leakage or injection position error caused by overlarge pressure during injection, and provides safety guarantee for the treatment of patients.
2. The threaded connection arranged at the connecting positions of the two sides of the pressure monitor can effectively prevent the over-pressure and the falling-off of the injection needle and the injection needle cylinder, and prevent the injection needle from sliding to pierce normal tissues by mistake when the injection needle cylinder falls off, thereby ensuring the injection safety of a patient and reducing unnecessary injuries.
Drawings
Fig. 1 is a schematic diagram of the syringe for monitoring venous pressure according to the present invention.
Fig. 2 is a schematic diagram of the structure of the injection handle and syringe barrel of the syringe for monitoring venous pressure according to the present invention.
Fig. 3 is a schematic diagram of a portion of a pressure monitor for use in the intravenous pressure monitoring syringe of the present invention.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and equivalents fall within the scope of the appended claims.
The reference numerals and components referred to in the drawings are as follows:
1. injection handle 2. Injection tube 3. Pressure monitor
4. Injection needle 5. Connecting column 6. Slotted hole
7. Internal thread 8. External thread 31. Injection chamber
32. Pressure monitoring chamber 33. Opening of the container 34. Piston
35. Areas of different color 36. Atmosphere connecting hole 37. Spring
Examples
Referring now to fig. 1-3, fig. 1 is a schematic diagram of the syringe for monitoring venous pressure according to the present invention. Fig. 2 is a schematic diagram of the structure of the injection handle and syringe barrel of the syringe for monitoring venous pressure according to the present invention. Fig. 3 is a schematic diagram of a portion of a pressure monitor for use in the intravenous pressure monitoring syringe of the present invention.
The device mainly relates to an injector capable of monitoring the pressure of a bolus vein in real time, which is used in the conventional intravenous injection and can prevent vasospasm, extravascular injection and the like during the injection of a medicament, so as to ensure the injection of the medicament into the vein, and the injector mainly comprises an injection handle 1, an injection tube 2, a pressure monitor 3 and an injection needle 4, wherein the injection handle 1 is positioned in the injection tube 3, the pressure monitor 3 is respectively connected between the injection needle 4 and the injection tube 2, specifically, connecting columns 5 are respectively and correspondingly arranged at two ends of the pressure monitor 3, the connecting columns 5 and the pressure monitor 3 are integrally connected, slotted holes 6 are arranged in the connecting columns 5, and internal threads 7 are arranged on the slotted holes 6; the head end of the injection tube 2 and the tail end of the injection needle 4 are both provided with a circle of external threads 8, and the head end of the injection tube 2 and the tail end of the injection needle are respectively in threaded connection with the connecting columns 5 at the two ends of the pressure monitor; its both ends all adopt the connected mode of screw thread formula, when can solving traditional conventional syringe and carrying out medical operation, because the syringe needle is smooth with the injection cylinder junction, often can generate pressure when injecting the position error to the condition scheduling problem that drops appears, it should set up can effectively prevent that pressure is too big, and syringe needle 4 drops with the injection cylinder, avoids the injection cylinder to drop in the twinkling of an eye, and normal tissue is stinged by 4 slip mistake of syringe needle, has improved security and stability that the device used.
In this embodiment, it is preferable that the pressure monitor 3 is a Chinese character 'zhong' structure as a whole, and further includes an injection chamber 31 and a pressure monitoring chamber 32, and the injection chamber 31 is communicated with the slot 6 in the connecting column, so as to facilitate the inflow of the liquid in the syringe 2, and an opening 33 is reserved on one side of the injection chamber 31, and the opening 33 is further communicated with the pressure monitoring chamber 32.
In this embodiment, it is preferable that the pressure monitoring chamber 32 is a U-shaped structure as a whole, a piston 34 is disposed in the pressure monitoring chamber 32, the upper end and the lower end of the piston 34 are filled in the pressure monitoring chamber 32, a spring is connected to the tail end of the piston, one end of the spring 37 is connected to the inner wall of the tail end of the pressure monitoring chamber, and an atmosphere communication hole 36 is disposed on the inner wall of the tail end of the pressure monitoring chamber; because the opening 33 reserved on one side of the injection chamber 31 is communicated with the pressure monitoring chamber 32, when liquid is injected (as shown in figure 3), the piston 34 in the pressure monitoring chamber can be slowly compressed and moved rightwards along with the increase of pressure, and the atmosphere communication hole on the inner wall of the tail end of the pressure monitoring chamber can be contacted with the outside atmosphere, so that the movement of the piston can be conveniently realized; meanwhile, the upper surface of the pressure monitoring chamber is also provided with different color areas 35, wherein the different color areas 35 can be green, yellow and red, and each color corresponds to different pressure values respectively; the pressure monitoring chamber is gradually contrasted on different color areas along with the slow movement of the piston 34, if the piston 34 is compressed to a green area, the normal injection pressure is obtained, if the piston 34 is compressed to a yellow area, the pressure is considered to be increased, if the piston 34 is compressed to a red area, the bolus pressure is considered to be too high, so that the real-time pressure value (which is set for the different color areas on the pressure monitoring chamber) is judged according to the different color areas, different color parts can be smeared on the outer shell of the pressure monitoring chamber during specific operation, like a 'eye' shape, the color is coated in the middle, the two sides are transparent and observable, and then the pressure values corresponding to the different colors can be effectively identified), further, the occurrence of medicine leakage or injection position error caused by the too large pressure during bolus injection can be effectively reduced, and the safety guarantee is provided for the treatment of a patient.
In this embodiment, the injection chamber 31 is preferably a concave structure, and the concave part of the concave structure is matched with the pressure monitoring chamber 32.
The use method of the invention comprises the following steps: when intravenous injection is carried out, a needle head is slowly inserted into a required injection position, then an injection handle is pressed, along with the slow downward movement of liquid in an injection tube, the liquid in an injection cavity of the injection tube also changes, and the liquid in the injection cavity gradually extrudes a spring connected with a piston in a pressure monitoring cavity, so that the piston is driven to move, along with the gradual increase of the injection pressure, the piston is gradually compressed and moved to a corresponding color area, and the safety of the injection pressure is judged by observing the color area corresponding to the piston; when the piston is compressed to the green area, the normal injection pressure is obtained, when the piston is compressed to the yellow area, the pressure is considered to be increased, when the piston is compressed to the red area, the injection pressure is considered to be overhigh, the injection should be stopped immediately, and whether the injection is injected into an artery or subcutaneous tissues or not is checked, so that the injection leaks.
It should be noted that: the invention has simple structure, convenient operation and lower manufacturing cost, can monitor the pressure of the injected vein in real time, effectively reduces the occurrence of drug leakage or injection position error caused by overlarge pressure during injection, and provides safety guarantee for the treatment of patients; meanwhile, the threaded connection arranged at the connecting positions of the two sides of the pressure monitor can effectively prevent the pressure from being too high, the injection needle head and the injection needle cylinder from falling off, and the injection needle head is prevented from sliding to accidentally pierce normal tissues at the moment of falling off of the injection needle cylinder, so that the injection safety of a patient is ensured, and unnecessary injuries are reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the principle of the present invention, and these should also be considered as the protection scope of the present invention.

Claims (5)

1. A medical liquid injection device with venous pressure monitoring function comprises an injection handle, an injection tube and an injection needle head, and is characterized by further comprising a pressure monitor, wherein connecting columns are correspondingly arranged at two ends of the pressure monitor respectively, slotted holes are formed in the connecting columns, and internal threads are arranged on the slotted holes; the head end of the injection tube and the tail end of the injection needle are both provided with a circle of external threads, and the injection tube and the injection needle are respectively in threaded connection with connecting columns at two ends of the pressure monitor.
2. The medical fluid injection device for monitoring venous pressure of claim 1, wherein the pressure monitor is generally in a Chinese character 'zhong' shape, and further comprises an injection chamber and a pressure monitoring chamber, wherein the injection chamber is communicated with the slotted hole in the connecting column, an opening is reserved on one side of the injection chamber, and the opening is communicated with the pressure monitoring chamber.
3. The medical liquid injection device for monitoring venous pressure according to claim 2, wherein the pressure monitoring chamber is of a U-shaped structure as a whole, a piston is arranged in the pressure monitoring chamber, the upper end and the lower end of the piston are filled in the pressure monitoring chamber correspondingly, a spring is connected to the tail end of the piston, one end of the spring is connected with the inner wall of the tail end of the pressure monitoring chamber, and an atmosphere communication hole is formed in the inner wall of the tail end of the pressure monitoring chamber.
4. The medical liquid injection device with monitoring of venous pressure of claim 2, wherein the upper surface of the pressure monitoring chamber is further provided with different color areas, wherein the different color areas are green, yellow and red, and each color corresponds to a different pressure value.
5. A medical fluid infusion device as claimed in claim 1 wherein said infusion chamber is generally of a v-shaped configuration with a concavity matching said pressure monitoring chamber.
CN202210982239.8A 2022-08-16 2022-08-16 Medical liquid injection device with monitoring venous pressure Pending CN115212390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210982239.8A CN115212390A (en) 2022-08-16 2022-08-16 Medical liquid injection device with monitoring venous pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210982239.8A CN115212390A (en) 2022-08-16 2022-08-16 Medical liquid injection device with monitoring venous pressure

Publications (1)

Publication Number Publication Date
CN115212390A true CN115212390A (en) 2022-10-21

Family

ID=83615994

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210982239.8A Pending CN115212390A (en) 2022-08-16 2022-08-16 Medical liquid injection device with monitoring venous pressure

Country Status (1)

Country Link
CN (1) CN115212390A (en)

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