CN114404733A - Medical injector and use method thereof - Google Patents
Medical injector and use method thereof Download PDFInfo
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- CN114404733A CN114404733A CN202111580624.1A CN202111580624A CN114404733A CN 114404733 A CN114404733 A CN 114404733A CN 202111580624 A CN202111580624 A CN 202111580624A CN 114404733 A CN114404733 A CN 114404733A
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- pipe
- communicating pipe
- fixedly connected
- conical
- tube
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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
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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
- A61M5/1782—Devices aiding filling of syringes in situ
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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
- 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
- A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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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)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A medical injector and a using method thereof, belonging to the field of medical appliances. One end of the communicating pipe I is fixedly connected with a puncture head, the other end of the communicating pipe I is fixedly connected with a buffer pipe, the side face of the communicating pipe I is fixedly connected with an air pipe, and the communicating pipe I is communicated with the air pipe; one end of the communicating pipe II is fixedly connected with the buffer pipe, the other end of the communicating pipe II is fixedly connected with the needle head, and a flow controller is further arranged on the outer side of the communicating pipe II; the connecting pipe includes the stereoplasm pipe, the one end of stereoplasm pipe and I fixed connection communicating pipe, and the other end of stereoplasm pipe is established to the toper, and the stereoplasm pipe axial be equipped with the feed liquor passageway of I intercommunication communicating pipe. The down-flow speed of the liquid medicine can be slowed down without manual control, and the phenomenon that the attention of nursing staff and patients is not concentrated to cause the blood of the patient to flow back into the injector after the liquid medicine is completely infused is avoided; after the injector is used, the phenomenon that the puncture head and the needle puncture the human body can be avoided, and the phenomenon that the life health of a patient is influenced by repeated use of the injector can be avoided.
Description
Technical Field
The invention relates to a medical injector and a using method thereof, belonging to the field of medical instruments.
Background
When the injector commonly used at present is used, a puncture head penetrating into the medicine bottle punctures a rubber cover of the medicine bottle and then is difficultly inserted and pulled, and when a nurse pinches a buffer pipe liquid medicine to enter the injector for the first time, the middle position of the liquid medicine is easy to generate bubbles, the nurse mostly selects to discharge the liquid medicine from a needle head when discharging the bubbles from the injector, and the liquid medicine can be continuously used until the bubbles are discharged along with the bubbles, so that the waste of the liquid medicine is caused, and the improvement is necessary.
Disclosure of Invention
It is an object of the present invention to provide a medical injector and a method of using the same that solves the above-mentioned problems of the background art.
The invention achieves the purpose, and adopts the following technical scheme:
a medical injector comprises a puncture head, an air pipe, a communicating pipe I, a buffer pipe, a communicating pipe II, a flow controller and a needle head; one end of the communicating pipe I is fixedly connected with a puncture head, the other end of the communicating pipe I is fixedly connected with a buffer pipe, the side face of the communicating pipe I is fixedly connected with an air pipe, and the communicating pipe I is communicated with the air pipe; one end of the communicating pipe II is fixedly connected with the buffer pipe, the other end of the communicating pipe II is fixedly connected with the needle head, and a flow controller is further arranged on the outer side of the communicating pipe II;
the puncture head includes the connecting pipe, and the connecting pipe includes the stereoplasm pipe, the one end of stereoplasm pipe and I fixed connection communicating pipe, and the other end of stereoplasm pipe is established to the toper, and the stereoplasm pipe axial be equipped with the inlet channel of I intercommunication communicating pipe.
A method of using a medical injector: the using method comprises the following steps:
the method comprises the following steps: the conical block is punctured into the medicine bottle, so that the rubber plug of the medicine bottle is adhered to the rubber layer of the annular plate, and then the force is continuously applied until the air bag is separated from the cylinder body;
step two: one hand pinches the buffer tube, the other hand is placed on the flow controller, and when the liquid medicine flows into the communicating tube II and bubbles at the lowest end in the liquid medicine are close to the elastic buffer cavity, the liquid medicine stops flowing downwards through the flow controller; pressing the elastic buffer cavity; the gas in the elastic buffer cavity enters the communicating pipe II, forms large bubbles with the bubbles in the communicating pipe II, and continuously moves upwards until the large bubbles move into the buffer pipe;
step three: opening the flow controller to enable the liquid medicine to flow out of the needle in a small amount, and then closing the flow controller;
step four: the needle head is punctured into the body of a patient, and finally the flow controller is opened and the flow rate of the liquid medicine is adjusted;
step five: after use, the conical block is inserted into the conical tube, and the needle passes through the jack and punctures the air bag.
Compared with the prior art, the invention has the beneficial effects that: the invention not only can avoid the problem that the puncture head is hard to insert and pull after penetrating into the rubber cover of the medicine bottle, but also can slow down the down-flow speed of the medicine liquid without manual control after the medicine liquid completely flows into the syringe, thereby avoiding the situation that the attention of nursing staff and patients is not concentrated, which causes the blood of patients to flow back into the syringe after the medicine liquid is completely transfused; meanwhile, the invention can also reduce the waste of liquid medicine when bubbles in the communicating pipe II are reduced before infusion, and can prevent the puncture head and the needle head from puncturing people and prevent the injector from being repeatedly used to influence the life health of a patient after the injector is used.
Drawings
FIG. 1 is a front view of a medical injector of the present invention;
FIG. 2 is a schematic view of a first embodiment of the piercing head of the medical injector according to the present invention;
FIG. 3 is a schematic view of a second embodiment of the piercing head of the medical injector according to the present invention;
FIG. 4 is a front view of a control device of a medical injector of the present invention;
FIG. 5 is a front view of a sliding tube of a medical injector of the present invention;
FIG. 6 is a front view of a connecting tube of a medical injector of the present invention;
FIG. 7 is a front view of a buffer tube of a medical injector of the present invention;
FIG. 8 is a side view of a buffer tube of a medical injector of the present invention;
fig. 9 is a schematic view of the position of the elastic buffer cavity of the medical injector.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in fig. 1 to 9, the present embodiment describes a medical injector, which includes a puncture head 1, an air tube 2, a communication tube i 3, a buffer tube 4, a communication tube ii 5, a flow controller 7, and a needle 8; one end of the communicating pipe I3 is fixedly connected with the puncture head 1, the other end of the communicating pipe I3 is fixedly connected with the buffer pipe 4, the side face of the communicating pipe I3 is fixedly connected with the air pipe 2, and the communicating pipe I3 is communicated with the air pipe 2; one end of the communicating pipe II 5 is fixedly connected with the buffer pipe 4, the other end of the communicating pipe II 5 is fixedly connected with the needle head 8, and the outer side of the communicating pipe II 5 is also provided with a flow controller 7;
The second embodiment is as follows: as shown in fig. 1 to 9, this embodiment is a further description of the first embodiment, a coaxial circular sieve plate 31 having an inner diameter equal to that of the communicating pipe i 3 is further fixedly connected inside the communicating pipe i 3, and a connection position of the air pipe 2 and the communicating pipe i 3 is located between the sieve plate 31 and the puncture head 1.
The third concrete implementation mode: as shown in fig. 1 to 9, this embodiment is further described as a first embodiment, and the puncture head 1 further includes a control device 11; in the idle state, one end of the control device 11 is in contact with the circular sieve plate 31, and the other end of the control device 11 is in contact with the tapered end of the connecting pipe 13.
The fourth concrete implementation mode: as shown in fig. 1 to 9, this embodiment is further described with respect to the first embodiment, an axial slide way 133 is provided on an inner wall of the liquid inlet channel 132 of the hard round pipe 131;
the puncture head 1 further comprises a control device 11 and a sliding tube 12; the sliding tube 12 comprises a cylinder 121, an annular plate 122, a glue layer 123 and a sliding block 124; the position, close to the other end, on the outer circumferential surface of the cylinder 121 is fixedly connected with an annular plate 122, the other end of the outer circumferential surface of the cylinder 121 is fixedly connected with the annular plate 122, and one end, far away from the slider 124, of the annular plate 122 is provided with a glue layer 123; the distance is reserved between the end faces of the residual cylinder 121 on the annular plate 122, and after the rubber cover is punctured, the cylinder 121 can push the punctured rubber cover to the periphery, so that the liquid medicine is prevented from flowing downwards.
When the device is in an idle state, one end of the control device 11 is in contact with the circular sieve plate 31, and the other end of the control device 11 is in contact with one end of the cylinder 121, which is provided with the annular plate 122.
The fifth concrete implementation mode: as shown in fig. 1 to 9, this embodiment is further described with respect to the first embodiment, and the control device 11 includes a tapered block 111, a plurality of blades 112, an air bag 114, a rectangular rod 115, a baffle 116, and a plurality of insertion blocks 117; one end of the rectangular rod 115 is fixedly connected with a baffle 116, the other end of the rectangular rod 115 is fixedly connected with a conical block 111, and a plurality of blades 112 are uniformly distributed on the conical surface of the conical block 111; the other end of the baffle 116 is fixedly connected with a plurality of inserting blocks 117, and the air bag 114 is fixedly connected to one end, close to the conical block 111, of the rectangular rod 115; when the device is in an idle state, the baffle 116 is positioned at the upper end of the circular sieve plate 31, the insert 117 is positioned in the sieve holes of the circular sieve plate 31, and the air bag 114 is positioned inside the conical end of the hard circular tube 131 or inside the end of the cylinder 121 provided with the annular plate 122; the conical block 111 is contacted with the conical end of the hard circular tube 131 or the end of the cylinder 121 provided with the annular plate 122;
the inner wall of the liquid inlet channel 132 of the hard circular tube 131 is fixedly connected with a limiting rod 134, a limiting hole 135 is formed in the limiting rod 134, and the limiting hole 135 is in sliding fit with the rectangular rod 115.
The sixth specific implementation mode: as shown in fig. 1-9, this embodiment is further described with respect to the first embodiment, wherein the diameter of the baffle 116 is greater than two-thirds of the diameter of the circular screen panel 31.
The seventh embodiment: as shown in fig. 1 to 9, this embodiment further illustrates the first embodiment, a tapered tube 42 is disposed on the buffer tube 4, and a through hole i 41 and a through hole ii 43 are respectively disposed on two sides of the buffer tube 4; the fixed connection of conical tube 42 is in the inside of buffer tube 4, and the both ends of conical tube 42 communicate with through-hole I41 and through-hole II 43 respectively.
The specific implementation mode is eight: as shown in fig. 1 to 9, this embodiment is further described with respect to the first embodiment, the conical block 112 is further provided with a plug hole 113 axially penetrating through the conical tube; the needle 8 is a sliding fit with the socket 113 and the maximum diameter of the conical block 112 is equal to half the maximum diameter of the conical tube 42.
The specific implementation method nine: as shown in fig. 1 to 9, this embodiment is a further description of the first embodiment, an elastic buffer cavity 6 is disposed on the communication pipe ii 5 near the flow controller 7; elastic buffer cavity 6 and II 5 intercommunications of communicating pipe, and elastic buffer cavity 6 slant setting, elastic buffer cavity 6 keep away from the one end height that II 5 communicated pipe contact with II 5 communicating pipe one end.
The detailed implementation mode is ten: as shown in fig. 1 to 9, the present embodiment describes a method for using a medical injector, which includes the following steps:
the method comprises the following steps: the conical block 111 is pierced into the medicine bottle, so that the rubber stopper of the medicine bottle is adhered to the rubber layer 123 of the annular plate 122, and then the force is continuously applied until the air bag 114 is separated from the barrel body 121;
step two: one hand pinches the buffer tube 4, the other hand is placed on the flow controller 7, when the liquid medicine flows into the communicating tube II 5 and bubbles at the lowest end in the liquid medicine are close to the elastic buffer cavity 6, the liquid medicine stops flowing downwards through the flow controller 7; pressing the elastic buffer cavity 6; the gas in the elastic buffer cavity 6 enters the communicating pipe II 5, forms large bubbles with the bubbles in the communicating pipe II 5, and continuously moves upwards until the large bubbles move into the buffer tube 4;
step three: opening the flow controller 7 to enable the liquid medicine to flow out of the needle 8 in a small amount, and then closing the flow controller 7;
step four: the needle 8 is punctured into the body of the patient, and finally the flow controller 7 is opened and the flow rate of the liquid medicine is adjusted;
step five: after use, the tapered block 111 is inserted into the tapered tube 42 and the needle 8 passes through the receptacle 113 and pierces the balloon 114.
The working principle of the invention is as follows: when the device is used, the hard round tube 131 is pushed towards the medicine bottle, the hard round tube 131 drives the conical block 111 to pierce into the medicine bottle, the rubber plug of the medicine bottle is adhered to the rubber layer 123 of the annular plate 122, then the force is continuously applied until the air bag 114 is separated from the cylinder body 121, at the moment, under the action of the buoyancy of the medicine liquid, the conical block 111 and the air bag 114 move upwards, the baffle 116 is driven to move upwards through the rectangular rod 115, the baffle 116 is separated from the circular sieve plate 31, the medicine liquid can normally flow downwards through the circular sieve plate 31 to facilitate transfusion, after the medicine liquid in the medicine bottle completely flows into the injector, the conical block 111 and the air bag 114 move downwards to the rubber cover at the bottom end of the medicine bottle, the pierced opening on the rubber cover is covered by the air bag 114, meanwhile, the baffle 116 is driven to move downwards through the rectangular rod 115, the insertion block 117 at the lower end of the baffle 116 moves downwards and moves into the sieve hole of the circular sieve plate 31, most of the sieve holes are blocked by the insert 117, so that the flow rate of the liquid medicine in the syringe is reduced, the time for injecting the liquid medicine into the body of a patient is delayed, a nursing staff or the patient can find the residual amount of the liquid medicine in the syringe in a longer reaction time, the phenomenon that blood flows backwards into the syringe after the liquid medicine is completely injected is avoided, the nursing staff can draw out the needle head 8 after waiting for the liquid medicine to flow aside, the puncture head 1 can also be drawn out of the medicine bottle, then the rectangular rod 115 is stuck on a medicine bottle bracket through an adhesive tape and the like, under the action of gravity, the cylinder body 121 and the hard circular tube 131 can move downwards relative to the control device 11, the baffle 116 can move upwards, the insert 117 is separated from the circular sieve plate 31, and the flow rate of the liquid medicine is recovered;
when the puncture head 1 is inserted and pulled out, the puncture head 1 is adhered to the lower end of the rubber cover through the rubber layer 123 on the annular plate 122 on the side surface of the cylinder body 121, so that the cylinder body 121 is only penetrated into a part with a short length to block the puncture of the rubber cover, the rubber cover is prevented from blocking the flow of the drug, and the syringe can be fixed without penetrating into the part with the long length, therefore, the friction force is small when the puncture head is pulled downwards, and the cylinder body 121 is only penetrated into the part with the short length, so that the puncture head is not required to be pulled downwards, and the drug liquid at the position of the bottleneck in the drug bottle can flow into the syringe;
one hand pinches the buffer tube 4, the other hand is placed on the flow controller 7, when the liquid medicine flows into the communicating tube II 5 and bubbles at the lowest end in the liquid medicine are close to the elastic buffer cavity 6, the liquid medicine stops flowing downwards through the flow controller 7; pressing the elastic buffer cavity 6; the gas in the elastic buffer cavity 6 enters the communicating pipe II 5, and forms large bubbles with the bubbles in the communicating pipe II 5, and the large bubbles continuously move upwards until the large bubbles move into the buffer tube 4, so that the phenomenon that mixed liquid medicine is discharged when the bubbles are discharged from the needle head 8 and the liquid medicine is wasted is avoided;
opening the flow controller 7 to enable the liquid medicine to flow out of the needle 8 in a small amount, discharging air in the flow controller 7 and the needle 8, and then closing the flow controller 7;
the needle 8 is punctured into the body of the patient, and finally the flow controller 7 is opened and the flow rate of the liquid medicine is adjusted;
after the use, the conical block 111 is inserted into the conical tube 42, and the maximum diameter of the conical block 111 is larger than the minimum diameter of the conical tube 42, so that the blade 112 on the conical block 111 can cut the renewing crown 42, then the needle 8 passes through the insertion hole 113 and punctures the air bag 114, thereby effectively preventing the puncture head 1 and the needle 8 from pricking workers, puncturing the conical tube 42 and the air bag 114 in the buffer tube 4, preventing the syringe from being reused, and avoiding cross infection caused by repeated use of lawless persons.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A medical injector, characterized by: comprises a puncture head (1), an air pipe (2), a communicating pipe I (3), a buffer pipe (4), a communicating pipe II (5), a flow controller (7) and a needle head (8); one end of the communicating pipe I (3) is fixedly connected with the puncture head (1), the other end of the communicating pipe I (3) is fixedly connected with the buffer pipe (4), the side face of the communicating pipe I (3) is fixedly connected with the air pipe (2), and the communicating pipe I (3) is communicated with the air pipe (2); one end of the communicating pipe II (5) is fixedly connected with the buffer pipe (4), the other end of the communicating pipe II (5) is fixedly connected with the needle head (8), and a flow controller (7) is further arranged on the outer side of the communicating pipe II (5);
puncture head (1) includes connecting pipe (13), and connecting pipe (13) include stereoplasm pipe (131), the one end and communicating pipe I (3) fixed connection of stereoplasm pipe (131), and the other end of stereoplasm pipe (131) is established to the toper, and stereoplasm pipe (131) axial is equipped with liquid inlet channel (132) with communicating pipe I (3) intercommunication.
2. A medical injector according to claim 1, characterized in that: the inner part of the communicating pipe I (3) is fixedly connected with a coaxial circular sieve plate (31) with the same inner diameter as the communicating pipe I (3), and the joint of the air pipe (2) and the communicating pipe I (3) is positioned between the sieve plate (31) and the puncture head (1).
3. A medical injector according to claim 2, characterized in that: the puncture head (1) further comprises a control device (11); when the device is in an idle state, one end of the control device (11) is in contact with the circular sieve plate (31), and the other end of the control device (11) is in contact with the conical end of the connecting pipe (13).
4. A medical injector according to claim 2, characterized in that: an axial slideway (133) is arranged on the inner wall of the liquid inlet channel (132) of the hard round pipe (131);
the puncture head (1) further comprises a control device (11) and a sliding tube (12); the sliding pipe (12) comprises a cylinder body (121), an annular plate (122), a glue layer (123) and a sliding block (124); one end of the outer circular surface of the cylinder body (121) is fixedly connected with a sliding block (124) in sliding fit with the sliding way (133), the position, close to the other end, of the outer circular surface of the cylinder body (121) is fixedly connected with an annular plate (122), and one end, far away from the sliding block (124), of the annular plate (122) is provided with a glue layer (123);
when the device is in an idle state, one end of the control device (11) is in contact with the circular sieve plate (31), and the other end of the control device (11) is in contact with one end, provided with the annular plate (122), of the cylinder body (121).
5. A medical injector according to claim 3 or 4, characterized in that: the control device (11) comprises a conical block (111), a plurality of blades (112), an air bag (114), a rectangular rod (115), a baffle plate (116) and a plurality of insertion blocks (117); one end of the rectangular rod (115) is fixedly connected with a baffle (116), the other end of the rectangular rod (115) is fixedly connected with a conical block (111), and a plurality of blades (112) are uniformly distributed on the conical surface of the conical block (111); the other end of the baffle (116) is fixedly connected with a plurality of inserting blocks (117), and the air bag (114) is fixedly connected to one end, close to the conical block (111), of the rectangular rod (115); when the device is in an idle state, the baffle (116) is positioned at the upper end of the circular sieve plate (31), the insert block (117) is positioned in the sieve hole of the circular sieve plate (31), and the air bag (114) is positioned inside the conical end of the hard circular tube (131) or inside the end of the cylinder body (121) provided with the annular plate (122); the conical block (111) is contacted with the conical end of the hard circular tube (131) or the end of the cylinder body (121) provided with the annular plate (122);
the liquid inlet channel (132) inner wall of stereoplasm pipe (131) is gone up fixedly connected with gag lever post (134), is equipped with spacing hole (135) on gag lever post (134), and this spacing hole (135) and rectangular rod (115) sliding fit.
6. A medical injector according to claim 5, characterized in that: the diameter of the baffle plate (116) is larger than two thirds of the diameter of the circular sieve plate (31).
7. A medical injector according to claim 6, characterized in that: the buffer tube (4) is provided with a conical tube (42), and both sides of the buffer tube (4) are respectively provided with a through hole I (41) and a through hole II (43); the fixed connection of conical tube (42) is in the inside of buffer tube (4), and the both ends of conical tube (42) communicate with through-hole I (41) and through-hole II (43) respectively.
8. A medical injector according to claim 7, characterized in that: the conical block (112) is also provided with a jack (113) which axially penetrates through the conical pipe; the needle (8) is in sliding fit with the insertion hole (113), and the maximum diameter of the conical block (112) is equal to one half of the maximum diameter of the conical tube (42).
9. The medical injector according to claim 87, wherein: an elastic buffer cavity (6) is arranged on the communicating pipe II (5) close to the flow controller (7); elastic buffer cavity (6) and II (5) intercommunications of communicating pipe, and elastic buffer cavity (6) slant sets up, and elastic buffer cavity (6) keep away from the one end height that II (5) communicated pipe kept away from one end of communicating pipe be higher than with the one end of II (5) contacts of communicating pipe.
10. The method of using a medical injector as claimed in claim 9, wherein: the using method comprises the following steps:
the method comprises the following steps: the conical block (111) is punctured into the medicine bottle, so that the rubber plug of the medicine bottle is adhered to the rubber layer (123) of the annular plate (122), and then the force is continuously applied until the air bag (114) is separated from the cylinder body (121);
step two: one hand pinches the buffer tube (4), the other hand is placed on the flow controller (7), and when the liquid medicine flows into the communicating tube II (5) and bubbles at the lowest end of the liquid medicine are close to the elastic buffer cavity (6), the liquid medicine stops flowing downwards through the flow controller (7); pressing the elastic buffer cavity (6); the gas in the elastic buffer cavity (6) enters the communicating pipe II (5), and forms large bubbles with the bubbles in the communicating pipe II (5), and the large bubbles move upwards continuously until the large bubbles move into the buffer tube (4);
step three: opening the flow controller (7) to enable the liquid medicine to flow out of the needle (8) in a small amount, and then closing the flow controller (7);
step four: the needle (8) is punctured into the body of a patient, and finally the flow controller (7) is opened and the flow rate of the liquid medicine is adjusted;
step five: after use, the conical block (111) is inserted into the conical tube (42), and the needle (8) passes through the insertion hole (113) and punctures the air bag (114).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580624.1A CN114404733B (en) | 2021-12-22 | 2021-12-22 | Medical injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580624.1A CN114404733B (en) | 2021-12-22 | 2021-12-22 | Medical injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114404733A true CN114404733A (en) | 2022-04-29 |
| CN114404733B CN114404733B (en) | 2023-07-04 |
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|---|---|---|---|
| CN202111580624.1A Active CN114404733B (en) | 2021-12-22 | 2021-12-22 | Medical injector |
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| CN2548636Y (en) * | 2002-04-27 | 2003-05-07 | 单联明 | Dual filter infusion device |
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| CN207221085U (en) * | 2016-11-29 | 2018-04-13 | 江苏苏云医疗器材有限公司 | A kind of bottle plug puncture unit |
| CN109045388A (en) * | 2018-07-27 | 2018-12-21 | 佛山奎丰商务咨询服务有限公司 | A kind of health dept.'s novel transfusion device |
| CN208389108U (en) * | 2017-09-12 | 2019-01-18 | 肖丽娜 | Bottle plug puncture unit and infusion apparatus |
| CN208448285U (en) * | 2017-08-03 | 2019-02-01 | 安徽省康宁实业（集团）有限公司 | A kind of infusion apparatus of novel gas-tight bubble |
| CN110448460A (en) * | 2019-09-05 | 2019-11-15 | 深圳安特医疗股份有限公司 | Puncture outfit and injection device |
| CN212327098U (en) * | 2020-04-17 | 2021-01-12 | 华中科技大学同济医学院附属协和医院 | Transfusion system |
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| WO2001095958A1 (en) * | 2000-06-12 | 2001-12-20 | Terumo Kabushiki Kaisha | Puncturer and self-retaining needle assembly |
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| CN207221085U (en) * | 2016-11-29 | 2018-04-13 | 江苏苏云医疗器材有限公司 | A kind of bottle plug puncture unit |
| CN208448285U (en) * | 2017-08-03 | 2019-02-01 | 安徽省康宁实业（集团）有限公司 | A kind of infusion apparatus of novel gas-tight bubble |
| CN208389108U (en) * | 2017-09-12 | 2019-01-18 | 肖丽娜 | Bottle plug puncture unit and infusion apparatus |
| CN109045388A (en) * | 2018-07-27 | 2018-12-21 | 佛山奎丰商务咨询服务有限公司 | A kind of health dept.'s novel transfusion device |
| CN110448460A (en) * | 2019-09-05 | 2019-11-15 | 深圳安特医疗股份有限公司 | Puncture outfit and injection device |
| CN212327098U (en) * | 2020-04-17 | 2021-01-12 | 华中科技大学同济医学院附属协和医院 | Transfusion system |
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| CN114404733B (en) | 2023-07-04 |
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