CN114404733B

CN114404733B - Medical injector

Info

Publication number: CN114404733B
Application number: CN202111580624.1A
Authority: CN
Inventors: 王子航
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2023-07-04
Anticipated expiration: 2041-12-22
Also published as: CN114404733A

Abstract

A medical injector and a use method thereof belong 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 tube, the side surface 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 tube, the other end of the communicating pipe II is fixedly connected with the needle head, and the outside of the communicating pipe II is also provided with a flow controller; the connecting pipe includes the stereoplasm pipe, and the one end and the I fixed connection of communicating pipe of stereoplasm pipe, and the other end of stereoplasm pipe is established to the toper, and stereoplasm pipe axial is equipped with the feed liquor passageway with communicating pipe I intercommunication. The liquid medicine downflow speed can be slowed down without manual control, and the phenomenon that the nursing staff and the patient are not concentrated in attention, so that the blood of the patient flows back into the injector after the liquid medicine is completely infused is avoided; after the injector is used, the puncture head and the needle head can be prevented from hurting people, and the injector can be prevented from being reused, so that the life and the health of a patient are influenced.

Description

Medical injector

Technical Field

The invention relates to a medical injector and a use method thereof, belonging to the field of medical appliances.

Background

When the injector is used, the puncture head in the medicine bottle is inserted into the rubber cover of the medicine bottle, so that the operation is laborious, and when a nurse pinches the buffer tube medicine liquid into the injector for the first time, bubbles are easily generated in the middle of the medicine liquid, and when the nurse discharges the bubbles from the injector, the bubbles are mostly selected to discharge the medicine liquid from the needle head, and the medicine liquid can not be continuously used until the bubbles are discharged, so that the medicine liquid is wasted, and therefore, the injector needs to be improved.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a medical injector and a use method thereof.

The invention achieves the above purpose, 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; 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 tube, the side surface 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 tube, the other end of the communicating pipe II is fixedly connected with the needle head, and the outside of the communicating pipe II is also provided with a flow controller;

the puncture head comprises a connecting pipe, the connecting pipe comprises a hard circular pipe, one end of the hard circular pipe is fixedly connected with a communicating pipe I, the other end of the hard circular pipe is arranged into a cone shape, and a liquid inlet channel communicated with the communicating pipe I is axially formed in the hard circular pipe.

A method for using a medical injector, comprising the following steps: the using method comprises the following steps:

step one: penetrating the conical block into the medicine bottle, adhering the rubber plug of the medicine bottle to the adhesive layer of the annular plate, and then continuously applying force until the air bag is separated from the cylinder;

step two: one hand is used for pinching the buffer tube, the other hand is placed on the flow controller, and when the liquid medicine flows into the communicating pipe 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, and forms large bubbles with bubbles in the communicating pipe II, and continuously moves upwards until the gas moves into the buffer tube;

step three: opening the flow controller to enable the liquid medicine to flow out from the needle head in a small amount, and closing the flow controller;

step four: penetrating the needle into the patient, opening the flow controller, and regulating the flow rate of the liquid medicine;

step five: after the use is completed, the conical block is inserted into the conical tube, and the needle head passes through the jack and pierces the air bag.

Compared with the prior art, the invention has the beneficial effects that: the invention can not only avoid the problem of laborious insertion and extraction after the puncture head is penetrated into the medicine bottle rubber cover, but also can slow down the downward flow speed of the medicine liquid without manual control after the medicine liquid completely flows into the injector, thereby avoiding the patient blood flowing back into the injector after the medicine liquid is completely infused due to the lack of concentration of nursing staff and patients; meanwhile, the invention can also reduce the waste of liquid medicine when the air bubble in the communicating pipe II is reduced before transfusion, and after the syringe is used, the puncture head and the needle head can be prevented from hurting people, and the syringe is prevented from being reused, so that the life and the health of a patient are influenced.

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 a piercing tip for a medical injector according to the present invention;

FIG. 3 is a schematic view of a second embodiment of a piercing tip for a 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 connection tube of a medical injector according to 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 showing the position of an elastic buffer chamber of a medical injector according to the present invention.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are all within the protection scope of the present invention.

The first embodiment is as follows: as shown in fig. 1 to 9, this embodiment describes a medical injector including a puncture head 1, an air tube 2, a communicating tube i 3, a buffer tube 4, a communicating 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 tube 4, the side surface 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 tube 4, the other end of the communicating pipe II 5 is fixedly connected with the needle 8, and the outside of the communicating pipe II 5 is also provided with a flow controller 7;

the puncture head 1 comprises a connecting pipe 13, the connecting pipe 13 comprises a hard circular pipe 131, one end of the hard circular pipe 131 is fixedly connected with a communicating pipe I3, the other end of the hard circular pipe 131 is provided with a conical shape, and the hard circular pipe 131 is axially provided with a liquid inlet channel 132 communicated with the communicating pipe I3.

The second embodiment is as follows: as shown in fig. 1-9, this embodiment is further described in the first embodiment, the coaxial circular sieve plate 31 with the inner diameter equal to that of the communicating tube i 3 is fixedly connected to the inside of the communicating tube i 3, and the joint between the air tube 2 and the communicating tube i 3 is located between the sieve plate 31 and the puncture head 1.

And a third specific embodiment: as shown in fig. 1-9, this embodiment is further described with respect to the first embodiment, where 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 screen plate 31, and the other end of the control device 11 is in contact with the tapered end of the connecting pipe 13.

The specific embodiment IV is as follows: as shown in fig. 1 to 9, this embodiment is further described in the first embodiment, and an axial slideway 133 is disposed on the inner wall of the liquid inlet channel 132 of the hard round tube 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, an adhesive layer 123 and a sliding block 124; the outer circular surface of the cylinder 121 is fixedly connected with an annular plate 122 at a position close to the other end, the other end of the outer circular surface of the cylinder 121 is fixedly connected with the 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; the annular plate 122 and the end face of the cylinder 121 are kept at a distance, and after the rubber cover is pierced, the cylinder 121 can push the pierced rubber cover to the periphery, so that the downward flowing of the liquid medicine is prevented from being influenced.

In the idle state, one end of the control device 11 contacts with the circular sieve plate 31, and the other end of the control device 11 contacts with one end of the cylinder 121 provided with the annular plate 122.

Fifth embodiment: as shown in fig. 1-9, 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 inserts 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 with one end, close to the conical block 111, of the rectangular rod 115; in the 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 in the conical end of the rigid circular tube 131 or in 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 round tube 131 or one end of the cylinder 121 provided with the annular plate 122;

a limiting rod 134 is fixedly connected to the inner wall of the liquid inlet channel 132 of the hard round tube 131, 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.

Specific embodiment six: as shown in fig. 1-9, which is a further illustration of the first embodiment, the baffle 116 has a diameter greater than two-thirds of the diameter of the circular screen panel 31.

Seventh embodiment: as shown in fig. 1-9, this embodiment is further described in the first embodiment, the buffer tube 4 is provided with a conical tube 42, and two sides of the buffer tube 4 are respectively provided with a through hole i 41 and a through hole ii 43; the conical tube 42 is fixedly connected inside the buffer tube 4, and two ends of the conical tube 42 are respectively communicated with the through hole I41 and the through hole II 43.

Eighth embodiment: as shown in fig. 1-9, this embodiment is further described in the first embodiment, and the conical block 112 is further provided with a jack 113 that axially penetrates through the conical tube; needle 8 is a sliding fit with receptacle 113, and the maximum diameter of tapered block 112 is equal to one-half the maximum diameter of tapered tube 42.

Detailed description nine: as shown in fig. 1 to 9, this embodiment is further described in the first embodiment, and an elastic buffer cavity 6 is disposed on the communicating pipe ii 5 near the flow controller 7; the elastic buffer cavity 6 is communicated with the communicating pipe II 5, the elastic buffer cavity 6 is obliquely arranged, and the height of one end of the elastic buffer cavity 6 away from the communicating pipe II 5 is higher than that of one end contacted with the communicating pipe II 5.

Detailed description ten: as shown in fig. 1 to 9, the present embodiment describes a method for using a medical injector, the method comprising the steps of:

step one: penetrating the conical block 111 into the medicine bottle, adhering the rubber stopper of the medicine bottle to the adhesive layer 123 of the annular plate 122, and then continuously applying force until the air bag 114 is separated from the cylinder 121;

step two: one hand is used for pinching the buffer tube 4, the other hand is placed on the flow controller 7, and when the liquid medicine flows into the communicating pipe 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 big bubbles with bubbles in the communicating pipe II 5, and continuously moves upwards until the gas moves into the buffer tube 4;

step three: opening the flow controller 7 to enable the liquid medicine to flow out from the needle 8 in a small amount, and closing the flow controller 7;

step four: penetrating the needle 8 into the patient, finally opening the flow controller 7, and adjusting the flow rate of the liquid medicine;

step five: after use, tapered block 111 is inserted into tapered tube 42 and needle 8 is passed through receptacle 113 and pierces 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 direction of the medicine bottle, the hard round tube 131 drives the conical block 111 to penetrate into the medicine bottle, the rubber plug of the medicine bottle is adhered on the adhesive layer 123 of the annular plate 122, then the force is continuously applied until the air bag 114 is separated from the cylinder 121, at the moment, under the action of the floating force 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 so as to facilitate transfusion, after the medicine liquid in the medicine bottle completely flows into the syringe, 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 mouth on the rubber cover is covered through the air bag 114, meanwhile, the baffle 116 is driven to move downwards through the rectangular rod 115, the insert 117 at the lower end of the baffle 116 moves downwards, the medicine liquid is moved into the sieve holes of the round sieve plate 31, so that most sieve holes are blocked by the plug blocks 117, the flow rate of the medicine liquid in the syringe is reduced, the time for completely injecting the medicine liquid into a patient is delayed, a nursing staff or the patient can find the residual amount of the medicine liquid in the syringe with longer reaction time, the medicine liquid is prevented from flowing backwards into the syringe after being completely injected, the nursing staff can pull out the needle 8 after the medicine liquid is circulated aside or pull out the puncture head 1 from the medicine bottle, then the rectangular rod 115 is stuck on the medicine bottle bracket through adhesive tape and the like, under the action of gravity, the cylinder 121 and the hard round tube 131 can move downwards relative to the control device 11, the baffle 116 moves upwards, the plug blocks 117 are separated from the round sieve plate 31, and the flow rate of the medicine liquid is recovered;

when the puncture head 1 is plugged in and pulled out, the puncture head 1 is stuck 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 121, so that the cylinder 121 only pierces a part with a shorter length to be pierced by the rubber cover, the rubber cover is prevented from blocking the medicine industry flow, the injector can be fixed without piercing a longer length, the friction force is small when the cylinder 121 is pulled downwards, and the liquid medicine at the bottle mouth position in the medicine bottle can flow into the injector without pulling the puncture head downwards because the cylinder 121 pierces a shorter length;

one hand is used for pinching the buffer tube 4, the other hand is placed on the flow controller 7, and when the liquid medicine flows into the communicating pipe 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 bubbles in the communicating pipe II 5, and continuously moves upwards until moving into the buffer tube 4, so that mixed liquid medicine is prevented from being discharged together when the bubbles are discharged from the needle 8, and the liquid medicine is prevented from being wasted;

opening the flow controller 7 to enable a small amount of liquid medicine to flow out from the needle 8, discharging the flow controller 7 and air in the needle 8, and closing the flow controller 7;

penetrating the needle 8 into the patient, finally opening the flow controller 7, and adjusting the flow rate of the liquid medicine;

after the use is finished, 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 scratch the conical tube 42, then the needle 8 passes through the insertion hole 113 and punctures the air bag 114, the puncture head 1 and the needle 8 can be effectively prevented from injuring workers, the conical tube 42 and the air bag 114 in the buffer tube 4 are punctured, the syringe cannot be reused, and the cross infection caused by repeated use of lawbreakers is avoided.

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 characteristics 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A medical injector, characterized in that: 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 a puncture head (1), the other end of the communicating pipe I (3) is fixedly connected with a buffer tube (4), the side surface of the communicating pipe I (3) is fixedly connected with an 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 tube (4), the other end of the communicating pipe II (5) is fixedly connected with the needle head (8), and the outside of the communicating pipe II (5) is also provided with a flow controller (7);

the puncture head (1) comprises a connecting pipe (13), the connecting pipe (13) comprises a hard circular pipe (131), one end of the hard circular pipe (131) is fixedly connected with a communicating pipe I (3), the other end of the hard circular pipe (131) is in a conical shape, and a liquid inlet channel (132) communicated with the communicating pipe I (3) is axially formed in the hard circular pipe (131);

the inside of the communicating pipe I (3) is fixedly connected with a coaxial round 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);

the puncture head (1) further comprises a control device (11); when in an idle state, one end of the control device (11) is contacted with the round sieve plate (31), and the other end of the control device (11) is contacted with the conical end of the connecting pipe (13);

an axial slideway (133) is arranged on the inner wall of the liquid inlet channel (132) of the hard circular tube (131);

the puncture head (1) further comprises a control device (11) and a sliding tube (12); the sliding tube (12) comprises a cylinder body (121), an annular plate (122), a glue layer (123) and a sliding block (124); a sliding block (124) which is in sliding fit with the sliding way (133) is fixedly connected to one end of the outer circular surface of the cylinder body (121), an annular plate (122) is fixedly connected to the position, close to the other end, of the outer circular surface of the cylinder body (121), and an adhesive layer (123) is arranged at one end, far away from the sliding block (124), of the annular plate (122);

when in an idle state, one end of the control device (11) is contacted with the round sieve plate (31), and the other end of the control device (11) is contacted with one end of the cylinder body (121) provided with the annular plate (122);

the control device (11) comprises a conical block (111), a plurality of blades (112), an air bag (114), a rectangular rod (115), a baffle (116) and a plurality of inserting 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 in an idle state, the baffle (116) is positioned at the upper end of the round sieve plate (31), the insert block (117) is positioned in the sieve holes of the round sieve plate (31), the air bag (114) is positioned in the conical end of the hard round tube (131) or in one end of the cylinder (121) provided with the annular plate (122); the conical block (111) is contacted with the conical end of the hard round tube (131) or one end of the cylinder (121) provided with the annular plate (122);

a limiting rod (134) is fixedly connected to the inner wall of the liquid inlet channel (132) of the hard circular tube (131), 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).

2. A medical injector according to claim 1, wherein: the diameter of the baffle (116) is greater than two-thirds of the diameter of the circular screen plate (31).

3. A medical injector according to claim 2, wherein: the buffer tube (4) is provided with a conical tube (42), and two sides of the buffer tube (4) are respectively provided with a through hole I (41) and a through hole II (43); the conical tube (42) is fixedly connected inside the buffer tube (4), and two ends of the conical tube (42) are respectively communicated with the through hole I (41) and the through hole II (43).

4. A medical injector according to claim 3, wherein: the conical block (112) is also provided with an insertion hole (113) which axially penetrates through the conical tube; 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).

5. A medical injector according to claim 3 or 4, wherein: an elastic buffer cavity (6) is arranged at a position, close to the flow controller (7), on the communicating pipe II (5); the elastic buffer cavity (6) is communicated with the communicating pipe II (5), the elastic buffer cavity (6) is obliquely arranged, and the height of one end, far away from the communicating pipe II (5), of the elastic buffer cavity (6) is higher than that of one end, in contact with the communicating pipe II (5).