CN109602999B - A kind of picc indwelling tube continuous liquid supply anti-clogging device and liquid supply method - Google Patents
A kind of picc indwelling tube continuous liquid supply anti-clogging device and liquid supply method Download PDFInfo
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- CN109602999B CN109602999B CN201811474969.7A CN201811474969A CN109602999B CN 109602999 B CN109602999 B CN 109602999B CN 201811474969 A CN201811474969 A CN 201811474969A CN 109602999 B CN109602999 B CN 109602999B
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
-
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- 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
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
-
- 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
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
- A61M2005/1652—Filter with duct, e.g. filtering element incorporated in a flow line, tube, duct
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本发明涉及输液领域，尤其涉及一种picc留置管持续供液防堵塞装置及其供液方法。一种picc留置管持续供液防堵塞装置，其特征在于：包括依次连接的供液管接头组件、正压室组件及picc留置管接头组件，其中供液管接头组件用于与供液导管相连，供液管接头组件包括单向嘴阀；供液管接头组件设置在正压室组件的一侧，正压室组件的正压室（7）与供液管接头组件的进液通道通过单向嘴阀相连；picc留置管接头组件设置在正压室组件的另一侧，与供液管接头组件相对，picc留置管接头组件的进液通道与正压室相连通，能够实现为picc留置管持续供液，且防止血液回流堵塞留置管。
The invention relates to the field of infusion, in particular to a continuous liquid supply anti-clogging device for a picc indwelling tube and a liquid supply method thereof. A picc indwelling tube continuous liquid supply anti-clogging device is characterized in that: it comprises a liquid supply pipe joint assembly, a positive pressure chamber assembly and a picc indwelling pipe joint assembly which are connected in sequence, wherein the liquid supply pipe joint assembly is used for connecting with a liquid supply conduit , the liquid supply pipe joint assembly includes a one-way nozzle valve; the liquid supply pipe joint assembly is arranged on one side of the positive pressure chamber assembly, and the positive pressure chamber (7) of the positive pressure chamber assembly and the liquid inlet channel of the liquid supply pipe joint assembly pass through a single Connected to the mouth valve; the picc indwelling pipe joint assembly is arranged on the other side of the positive pressure chamber assembly, opposite to the liquid supply pipe joint assembly, the liquid inlet channel of the picc indwelling pipe joint assembly is connected with the positive pressure chamber, which can realize the picc indwelling The tube provides continuous fluid supply and prevents the backflow of blood from clogging the indwelling tube.
Description
Technical Field
The invention relates to the field of infusion, in particular to a continuous liquid supply anti-blocking device for a picc indwelling tube and a liquid supply method thereof.
Background
The PICC is a short name of central vein catheterization through peripheral venipuncture, and in order to protect the blood vessels of the arm of a patient, chemotherapy drugs are safely injected, and a doctor extends a catheter from the veins of the arm of the patient to a catheter directly close to the great veins of the heart. In the intermittent treatment period, most tumor chemotherapy patients can be recuperated home, and have different degrees of anxiety to the carried indwelling tube, so that the patients are worried about the occurrence of complications caused by improper nursing after going home, for example, the indwelling tube is blocked due to blood return, and blood clots formed in the indwelling tube enter the blood to form thrombus, which causes more serious health problems or endangers life.
The problem of blockage prevention of the indwelling tube needs to be solved urgently, for example, a patent with the publication number of CN104127934A discloses an infusion apparatus for transferring an indwelling catheter, which comprises an infusion assembly and a positive pressure assembly for preventing thrombus, wherein a positive pressure chamber of the infusion apparatus comprises a switching assembly of an inner cavity, so that the switching of a liquid path between normal dosage infusion and buffer infusion can be realized, but the structure and the operation for switching the liquid path are complex; the patent with publication number CN103861205A discloses a blood return prevention venous indwelling needle, which comprises a positive pressure chamber, a buffer valve, a joint and other components, wherein a driving device of the positive pressure chamber is a spring and other components, which can prevent blood from flowing back to a certain extent, but the pressure release speed of the spring and other components is not controllable, and the buffer valve can not completely overcome the problem of uneven liquid feeding.
Disclosure of Invention
In order to solve the technical problem, the invention provides a continuous liquid supply anti-blocking device for a picc indwelling pipe. The specific invention content is as follows:
a continuous liquid supply anti-clogging device for a picc indwelling tube comprises a liquid supply tube joint assembly, a positive pressure assembly and a picc indwelling tube joint assembly which are sequentially connected, wherein a liquid supply tube joint assembly is used for being connected with a liquid supply catheter and comprises a one-way nozzle valve; the liquid supply pipe joint assembly is arranged on one side of the positive pressure chamber assembly, and a positive pressure chamber of the positive pressure chamber assembly is connected with a liquid inlet channel of the liquid supply pipe joint assembly through a one-way nozzle valve; the picc indwelling pipe joint component is arranged on the other side of the positive pressure chamber component and is opposite to the liquid supply pipe joint component, and a liquid inlet channel of the picc indwelling pipe joint component is communicated with the positive pressure chamber.
Furthermore, the liquid supply pipe joint assembly comprises a liquid supply pipe joint, a liquid inlet channel is arranged on a central axis of the liquid supply pipe joint, the diameter of the liquid inlet channel of the liquid supply pipe joint is equal to the outer diameter of the liquid supply pipe, a one-way nozzle valve is arranged in the liquid inlet channel of the liquid supply pipe joint, the one-way nozzle valve comprises a valve plate, a connecting rod, an annular valve nozzle and a compression spring, an annular groove is arranged on the inner wall of one end, away from the positive pressure assembly, of the liquid inlet channel of the liquid supply pipe joint, the annular groove also contains the compression spring, one end of the compression spring is fixed with the inner wall of one side, close to the positive pressure chamber, of the annular; the diameter of annular valve mouth inner edge is less than the external diameter of feed pipe, one side of the interior marginal face looks plenum of annular valve mouth links to each other with the one end of connecting rod, and the valve block links to each other with the other end of connecting rod, and the shape of valve block and the shape phase-match of feed pipe joint inlet channel intercommunication plenum one side can realize opening and close of feed pipe joint inlet channel.
The micro driving device comprises a micro battery, a resonator, an integrated circuit and a micro stepping motor, wherein a rotating shaft of the micro stepping motor is connected with the screw, the micro battery is used for providing electric energy, the stepping motor rotates at a constant speed and intermittently under the frequency division retention action of the integrated circuit, and the micro driving device is used for realizing continuous liquid supply of the picc pipe; the miniature display control screen is arranged outside the control chamber and provided with a button for controlling the start and stop of the miniature driving device.
Furthermore, the picc indwelling pipe joint assembly comprises a transition cavity and a picc indwelling pipe joint, the transition cavity is detachably connected with the side wall of the shell of the positive pressure chamber, one end, far away from the control chamber, of the side wall, connected with the shell of the positive pressure chamber, of the transition cavity is provided with a liquid outlet hole, and the positive pressure chamber is communicated with the transition cavity through the liquid outlet hole; the filter cavity is arranged in the transition cavity, the filter block 3 is arranged in the filter cavity, the side wall of the filter cavity is provided with a plurality of liquid inlet micropores, the side wall of the transition cavity, which is far away from the positive pressure chamber, is integrally formed with a picc indwelling pipe joint, the picc indwelling pipe joint is a conical joint for being inserted into the picc indwelling pipe, and a liquid inlet channel of the picc indwelling pipe joint is communicated with the filter cavity of the transition cavity.
Furthermore, an infrared sensor is arranged on one side of the positive pressure chamber, which is opposite to the piston, and is used for detecting the position of the piston, the infrared sensor is connected with the integrated circuit, a sound-light alarm device is arranged on the micro driving device, and when the infrared sensor detects that the piston moves to the limit position, a micro display control screen of the control chamber gives an alarm to prompt the replacement of the picc indwelling tube continuous liquid supply anti-blocking device.
Further, the compression springs and the connecting rods are arranged in a plurality.
When the miniature stepping motor is used, the piston is controlled by the miniature stepping motor to move to one side of the control chamber, the liquid outlet of the picc indwelling pipe joint is upward, then the liquid supply pipe is inserted into the liquid inlet channel of the liquid supply pipe joint, the liquid supply pipe pushes the annular valve nozzle to move inwards, the annular valve nozzle drives the valve plate to completely open the liquid inlet channel of the liquid supply pipe joint, liquid enters the positive pressure chamber, after air in the positive pressure chamber is emptied, the liquid enters the transition chamber through the liquid outlet hole and then enters the picc indwelling pipe joint through the filter block, and after the air in the transition chamber is emptied, the picc indwelling pipe joint is inserted into the picc indwelling;
after the liquid supply of the liquid supply pipe is finished, the liquid supply pipe is pumped away, the valve plate is restored to a sealing state under the action of the compression spring, the micro driving device is started, the motor drives the screw rod to rotate, so that the piston is driven to rotate and advance, the piston extrudes liquid in the positive pressure chamber to form positive pressure, and continuous uniform-speed liquid supply for 6-24 hours can be provided for the indwelling pipe;
when the infrared sensor detects that the piston moves to the limit position, the miniature display control screen of the control room gives an alarm to prompt the replacement of the picc indwelling pipe continuous liquid supply anti-blocking device.
The transition chamber is detachably connected with the side wall of the shell of the positive pressure chamber, when the picc indwelling pipe is replaced, the transition chamber can be separated from the positive pressure chamber, and the filter block of the transition chamber is replaced, so that the device can be reused after being sterilized.
Advantageous effects
The continuous liquid supply anti-clogging device for the picc indwelling tube comprises a liquid supply tube joint assembly, a positive pressure chamber assembly and the picc indwelling tube joint assembly which are sequentially connected, wherein the liquid supply tube joint assembly can be communicated with a liquid supply tube, and the liquid supply tube can realize a normal liquid supply function through the device so as to convey liquid medicine for a patient.
The continuous liquid supply anti-blocking device for the picc indwelling tube comprises a positive pressure chamber assembly, wherein a positive pressure chamber of the positive pressure chamber assembly is connected with a liquid inlet channel of a liquid supply tube connector assembly through a one-way nozzle valve, when liquid supply is completed through a liquid supply tube, an operator can directly remove the liquid supply tube, the liquid inlet channel of the liquid supply tube connector assembly automatically realizes sealing of the positive pressure chamber through the one-way nozzle valve, and continuous liquid supply can be performed for the picc indwelling tube through positive pressure liquid supply of the positive pressure chamber, so that blood return is prevented from blocking the picc indwelling tube.
According to the continuous liquid supply anti-blocking device for the picc indwelling tube, the positive pressure chamber assembly comprises the shell, the control chamber, the micro driving device, the piston and the screw rod, the micro driving device can control the liquid supply speed and drive the piston to continuously extrude liquid in the positive pressure chamber at a constant speed, continuous constant liquid supply for the picc indwelling tube is realized, and the comfort level of a patient is improved.
The continuous liquid supply anti-clogging device for the picc indwelling tube comprises a micro display control screen, wherein the micro display control screen is provided with a button for controlling the micro driving device to be opened and closed, so that automatic control can be realized; and one side of the positive pressure chamber, which is opposite to the piston, is provided with an infrared sensor for detecting the position of the piston, the infrared sensor is connected with the integrated circuit, the miniature driving device is provided with an audible and visual alarm device, when the infrared sensor detects that the piston moves to a limit position, a miniature display control screen of the control chamber gives an alarm to prompt the replacement of the picc indwelling tube continuous liquid supply anti-blocking device, so that the device is safer to use.
According to the picc indwelling tube continuous liquid supply anti-blocking device, the filter block is arranged in the transition cavity, micro bubbles in liquid can be eliminated, and the safety of liquid supply is improved; and the transition chamber is detachably connected with the side wall of the shell of the positive pressure chamber, when the picc indwelling pipe is replaced, the transition chamber can be separated from the positive pressure chamber, and the filter block of the transition chamber is replaced, so that the device can be reused after being sterilized.
The continuous liquid supply anti-blocking device for the picc indwelling tube can be operated integrally with a normal liquid supply (infusion) link, liquid does not need to be additionally pre-filled in a positive pressure chamber in advance, and a nurse and a family can master the operation method, so that the device has good practicability.
Drawings
Fig. 1 is a schematic structural view of the continuous liquid supply anti-blocking device of the picc indwelling tube of the invention.
The device comprises a liquid outlet hole 1, a picc indwelling pipe joint 2, a filter block 3, a filter cavity 4, a liquid inlet micropore 5, a transition cavity 6, a positive pressure chamber 7, a shell 8, a control chamber 9, a micro display control screen 10, a micro driving device 11, a piston 12, a screw 13, a valve plate 14, a connecting rod 15, an annular valve nozzle 16, an annular groove 17, a compression spring 18, a liquid supply pipe joint 19 and an infrared sensor 20.
Detailed Description
The advantages, features and methods of accomplishing the same will become apparent from the drawings and the detailed description that follows.
A continuous liquid supply anti-clogging device for a picc indwelling tube comprises a liquid supply tube joint assembly, a positive pressure chamber assembly and the picc indwelling tube joint assembly which are sequentially connected, wherein a liquid supply tube joint assembly is used for being connected with a liquid supply catheter and comprises a one-way nozzle valve; the liquid supply pipe joint assembly is arranged on one side of the positive pressure chamber assembly, and a positive pressure chamber 7 of the positive pressure chamber assembly is connected with a liquid inlet channel of the liquid supply pipe joint assembly through a one-way nozzle valve; the picc indwelling pipe joint component is arranged on the other side of the positive pressure chamber component and is opposite to the liquid supply pipe joint component, and a liquid inlet channel of the picc indwelling pipe joint component is communicated with the positive pressure chamber.
The liquid supply pipe joint assembly comprises a liquid supply pipe joint 19, a liquid inlet channel is arranged on the axis of the liquid supply pipe joint 19, the diameter of the liquid inlet channel of the liquid supply pipe joint 19 is equal to the outer diameter of a liquid supply pipe, a one-way nozzle valve is arranged in the liquid inlet channel of the liquid supply pipe joint 19, the one-way nozzle valve comprises a valve plate 14, a connecting rod 15, an annular valve nozzle 16 and a compression spring 18, an annular groove 17 is arranged on the inner wall of one end, far away from the positive pressure assembly, of the liquid inlet channel of the liquid supply pipe joint 19, the compression spring 18 is also accommodated in the annular groove 17, one end of the compression spring 18 is fixed with the inner wall of one side, close to the positive pressure chamber 7, of the annular groove 17; the diameter of 16 inner edges of annular valve mouth is less than the external diameter of feed pipe, one side of 16 interior flange looks positive pressure chambers of annular valve mouth 7 links to each other with the one end of connecting rod 15, and valve block 14 links to each other with the other end of connecting rod 15, and the shape of valve block 14 and the shape phase-match of 19 feed pipe joints feed liquor passageway intercommunication positive pressure chambers 7 one side can realize opening and close of 19 feed pipe joints feed liquor passageway.
The positive pressure chamber assembly comprises a shell 8, a control chamber 9, a micro-drive device 11, a piston 12 and a screw 13, wherein the shell 8 is a regular hexahedron, a cylindrical positive pressure chamber 7 is formed inside the shell, the axis of the positive pressure chamber 7 is perpendicular to the axis of a liquid inlet channel of a liquid supply pipe joint 19, the piston 12 and the screw 13 are arranged in the positive pressure chamber 7, the piston 12 is in threaded connection with the screw 13, the screw 13 and the positive pressure chamber 7 are coaxial, one end of the screw 13 extends out of the positive pressure chamber 7 and is connected with the micro-drive device 11, the micro-drive device 11 is arranged in the control chamber 9, the micro-drive device 11 comprises a micro-battery, a resonator, an integrated circuit and a micro-stepping motor, a rotating shaft of the micro-stepping motor is connected with the screw 13, the micro-battery is used for providing electric energy, the stepping motor rotates at a; the outside of the control room 9 is also provided with a micro display control screen 10, and the micro display control screen 10 is provided with a button for controlling the on-off of the micro driving device 11.
The picc indwelling pipe joint assembly comprises a transition cavity 6 and a picc indwelling pipe joint 2, wherein the transition cavity 6 is detachably connected with the side wall of a shell 8 of a positive pressure chamber 7, one end, far away from a control chamber 9, of the side wall, connected with the shell 8 of the positive pressure chamber 7, of the transition cavity 6 is provided with a liquid outlet hole 1, and the positive pressure chamber 7 is communicated with the transition cavity 6 through the liquid outlet hole 1; a filter cavity 4 is arranged in a transition cavity 6, a filter block 3 is arranged in the filter cavity 4, a plurality of liquid inlet micropores 5 are arranged on the side wall of the filter cavity 4, a picc indwelling pipe joint 2 is integrally formed on the side wall of the transition cavity 6 far away from a positive pressure chamber 7, the picc indwelling pipe joint 2 is a conical joint for being inserted into a picc indwelling pipe, and a liquid inlet channel of the picc indwelling pipe joint 2 is communicated with the filter cavity 4 of the transition cavity 6.
Wherein, the positive pressure chamber 7 is provided with an infrared sensor 20 opposite to the piston 12 for detecting the position of the piston 12, the infrared sensor 20 is connected with the integrated circuit, the micro driving device 11 is provided with a sound and light alarm device, when the infrared sensor 20 detects that the piston 12 moves to the limit position, the micro display control screen 10 of the control chamber 9 gives an alarm to prompt the replacement of the picc indwelling tube continuous liquid supply anti-clogging device.
Wherein, the compression spring 18 and the connecting rod 15 are provided in plurality.
When the device is used, the micro stepping motor controls the piston to move to one side of the control chamber 9, a liquid outlet of the picc indwelling pipe joint 2 is upward, then a liquid supply pipe is inserted into a liquid inlet channel of the liquid supply pipe joint 19, the liquid supply pipe pushes the annular valve nozzle 16 to move inwards, the annular valve nozzle 16 drives the valve plate 14 to completely open the liquid inlet channel of the liquid supply pipe joint 19, liquid enters the positive pressure chamber 7, air in the positive pressure chamber 7 is emptied, the liquid enters the transition chamber 6 through the liquid outlet hole 1 and then enters the picc indwelling pipe joint 2 through the filter block 3, and the picc indwelling pipe joint 2 is inserted into the picc indwelling pipe after the air in the transition chamber 6 is emptied;
after the liquid supply of the liquid supply pipe is finished, the liquid supply pipe is pumped away, the valve plate 14 is restored to a sealing state under the action of the compression spring 18, the micro driving device 11 is started, the motor drives the screw rod 13 to rotate, so that the piston 12 is driven to rotate and advance, the piston 12 extrudes liquid in the positive pressure chamber to form positive pressure, and continuous uniform liquid supply for 6-24 hours can be provided for the indwelling pipe;
when the infrared sensor 20 detects that the piston 12 moves to the extreme position, the miniature display control screen 10 of the control chamber 9 gives an alarm to prompt the replacement of the picc indwelling pipe continuous liquid supply anti-blocking device.
The transition chamber 6 is detachably connected with the side wall of the shell body 8 of the positive pressure chamber 7, when the picc indwelling pipe is replaced, the transition chamber 6 can be separated from the positive pressure chamber 7, the filter block 3 of the transition chamber 6 is replaced, and the device can be reused after being sterilized.
Claims (1)
1. The utility model provides a picc indwelling pipe is lasted and is supplied liquid anti-clogging device which characterized in that: the device comprises a liquid supply pipe joint assembly, a positive pressure chamber assembly and a picc indwelling pipe joint assembly which are sequentially connected, wherein a liquid supply pipe joint assembly is used for being connected with a liquid supply catheter and comprises a one-way nozzle valve; the liquid supply pipe joint assembly is arranged on one side of the positive pressure chamber assembly, and a positive pressure chamber (7) of the positive pressure chamber assembly is connected with a liquid inlet channel of the liquid supply pipe joint assembly through a one-way nozzle valve; the picc indwelling pipe joint component is arranged on the other side of the positive pressure chamber component and is opposite to the liquid supply pipe joint component, and a liquid inlet channel of the picc indwelling pipe joint component is communicated with the positive pressure chamber; the liquid supply pipe joint assembly comprises a liquid supply pipe joint (19), a liquid inlet channel is arranged on the axis of the liquid supply pipe joint (19), the diameter of the liquid inlet channel of the liquid supply pipe joint (19) is equal to the outer diameter of a liquid supply pipe, a one-way nozzle valve is arranged in the liquid inlet channel of the liquid supply pipe joint (19), the one-way nozzle valve comprises a valve plate (14), a connecting rod (15), an annular valve nozzle (16) and a compression spring (18), an annular groove 17 is arranged on the inner wall of one end, far away from the positive pressure assembly, of the liquid inlet channel of the liquid supply pipe joint (19), the annular groove 17 also contains the compression spring (18), one end of the compression spring (18) is fixed with the inner wall of one side, close to the positive pressure chamber (7), of the annular groove (17), and the other end; the diameter of the inner edge of the annular valve nozzle (16) is smaller than the outer diameter of the liquid supply pipe, one side of the inner edge surface of the annular valve nozzle (16) opposite to the positive pressure chamber (7) is connected with one end of the connecting rod (15), the valve plate (14) is connected with the other end of the connecting rod (15), the shape of the valve plate (14) is matched with the shape of one side of the positive pressure chamber (7) communicated with a liquid inlet channel of the liquid supply pipe connector (19), and the opening and closing of the liquid inlet channel of the liquid supply pipe connector (19) can be realized; the positive pressure chamber assembly comprises a shell (8), a control chamber (9), a micro-driving device (11), a piston (12) and a screw (13), wherein the shell (8) is a regular hexahedron, a cylindrical positive pressure chamber (7) is formed inside the shell, the axis of the positive pressure chamber (7) is perpendicular to the axis of a liquid inlet channel of a liquid supply pipe joint (19), the piston (12) and the screw (13) are arranged in the positive pressure chamber (7), the piston (12) is in threaded connection with the screw (13), the screw (13) and the positive pressure chamber (7) are coaxial, one end of the screw (13) extends out of the positive pressure chamber (7) and is connected with the micro-driving device (11), the micro-driving device (11) is arranged in the control chamber (9), the micro-driving device (11) comprises a micro-battery, a resonator, an integrated circuit and a micro-stepping motor, the rotating shaft of the micro-stepping motor is connected with, the stepping motor intermittently rotates at a constant speed under the frequency division action of the integrated circuit, and is used for realizing continuous liquid supply of the picc indwelling tube; a micro display control screen (10) is also arranged on the outer side of the control chamber (9), and the micro display control screen (10) is provided with a button for controlling the on-off of the micro driving device (11); the compression springs (18) and the connecting rods (15) are arranged in a plurality of numbers;
the picc indwelling pipe joint assembly comprises a transition cavity (6) and a picc indwelling pipe joint (2), the transition cavity (6) is detachably connected with the side wall of a shell (8) of a positive pressure chamber (7), one end, far away from a control chamber (9), of the side wall, connected with the shell (8) of the positive pressure chamber (7), of the transition cavity (6) is provided with a liquid outlet hole (1), and the positive pressure chamber (7) is communicated with the transition cavity (6) through the liquid outlet hole (1); a filter cavity (4) is arranged in the transition cavity (6), a filter block (3) is arranged in the filter cavity (4), a plurality of liquid inlet micropores (5) are formed in the side wall of the filter cavity (4), a picc indwelling pipe joint (2) is integrally formed on the side wall of the transition cavity (6) far away from the positive pressure chamber (7), the picc indwelling pipe joint (2) is a conical joint for being inserted into the picc indwelling pipe, and a liquid inlet channel of the picc indwelling pipe joint (2) is communicated with the filter cavity (4) of the transition cavity (6);
an infrared sensor (20) is arranged on one side of the positive pressure chamber (7) opposite to the piston (12) and used for detecting the position of the piston (12), the infrared sensor (20) is connected with an integrated circuit, a sound and light alarm device is arranged on the micro driving device (11), and when the infrared sensor (20) detects that the piston (12) moves to a limit position, a micro display control screen (10) of the control chamber (9) gives an alarm to prompt the replacement of the picc indwelling tube to continuously supply liquid and prevent the blockage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474969.7A CN109602999B (en) | 2018-12-04 | 2018-12-04 | A kind of picc indwelling tube continuous liquid supply anti-clogging device and liquid supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474969.7A CN109602999B (en) | 2018-12-04 | 2018-12-04 | A kind of picc indwelling tube continuous liquid supply anti-clogging device and liquid supply method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109602999A CN109602999A (en) | 2019-04-12 |
| CN109602999B true CN109602999B (en) | 2021-04-27 |
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| CN201811474969.7A Expired - Fee Related CN109602999B (en) | 2018-12-04 | 2018-12-04 | A kind of picc indwelling tube continuous liquid supply anti-clogging device and liquid supply method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203131135U (en) * | 2013-03-04 | 2013-08-14 | 福建海鹏经贸有限公司 | Pressure-limiting valve |
| CN203763663U (en) * | 2014-03-13 | 2014-08-13 | 李林风 | Thrombus proof device for indwelling catheter |
| CN108744147A (en) * | 2017-10-28 | 2018-11-06 | 重庆科杰医疗设备有限公司 | Positive depressor, remaining needle, positive pressure tester and positive pressure weight testing method |
| CN108815698A (en) * | 2018-07-06 | 2018-11-16 | 苏州鑫康道医疗科技有限公司 | Continuous positive pressure connector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157235C (en) * | 2001-03-02 | 2004-07-14 | 潘子威 | Positive pressure device for preventing blood from returning back for medical retention transfusion |
| CN202612740U (en) * | 2012-01-02 | 2012-12-19 | 林友根 | Pilot one-way sequence valve |
| CN203686270U (en) * | 2013-11-22 | 2014-07-02 | 松阳县轻源机械设备有限公司 | Improved check valve |
| US10940264B2 (en) * | 2016-02-12 | 2021-03-09 | Medtronic Minimed, Inc. | Ambulatory infusion pumps and assemblies for use with same |
| AU2017248238B2 (en) * | 2016-04-08 | 2022-06-02 | Amgen Inc. | Drug delivery device |
| CN107497004A (en) * | 2017-10-10 | 2017-12-22 | 西安汇智医疗集团有限公司 | A kind of intelligent drainage of cerebrospinal fluid control and identification alarm system |
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2018
- 2018-12-04 CN CN201811474969.7A patent/CN109602999B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203131135U (en) * | 2013-03-04 | 2013-08-14 | 福建海鹏经贸有限公司 | Pressure-limiting valve |
| CN203763663U (en) * | 2014-03-13 | 2014-08-13 | 李林风 | Thrombus proof device for indwelling catheter |
| CN108744147A (en) * | 2017-10-28 | 2018-11-06 | 重庆科杰医疗设备有限公司 | Positive depressor, remaining needle, positive pressure tester and positive pressure weight testing method |
| CN108815698A (en) * | 2018-07-06 | 2018-11-16 | 苏州鑫康道医疗科技有限公司 | Continuous positive pressure connector |
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| CN109602999A (en) | 2019-04-12 |
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