CN117919540A

CN117919540A - Needle outlet mechanism, injection runner module and medicine injection system

Info

Publication number: CN117919540A
Application number: CN202211261880.9A
Authority: CN
Inventors: 叶进民; 王志伟
Original assignee: CC Biotechnology Corp
Current assignee: CC Biotechnology Corp
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2024-04-26

Abstract

The invention relates to a needle outlet mechanism, an injection runner module and a medicine injection system, wherein the injection runner module comprises a needle outlet mechanism and a switching mechanism, the medicine injection system comprises an injection runner module, a medicine storage module and a driving module, the medicine storage module is detachably connected with the injection runner module, the needle outlet mechanism comprises a shell, a needle outlet operation assembly and a puncture assembly, the needle outlet operation assembly is arranged in the shell, the needle outlet assembly of the needle outlet operation assembly is driven by a rotating assembly in a pressed one-time operation stroke, and the needle seat connected with the puncture assembly in the needle outlet operation assembly is driven by the rotating assembly to finish the actions of enabling the puncture assembly to withdraw the puncture needle again in a state of combining a puncture needle with a pipeline assembly and enabling the pipeline assembly to extend out of the shell.

Description

Needle outlet mechanism, injection runner module and medicine injection system

Technical Field

The invention relates to the technical field of medicine injection, in particular to a needle outlet mechanism, an injection runner module and a medicine injection system.

Background

The existing medicine injection system for subcutaneously injecting medicine liquid into human body mainly uses an injection mechanism capable of being operated manually or electrically to connect a medicine container, so that the medicine container can be penetrated into the human body by a needle group in the injection mechanism, soft needles in the needle group are remained to be penetrated into the subcutaneous of the human body, the hard needles are retracted, and then the medicine liquid is driven by a manual or electric mode to be injected into subcutaneous tissue of the human body through the soft needles penetrated into the human body.

The injection mechanism can be provided with a component for providing subcutaneous injection for a human body by using a soft needle and hard needle combined needle group, but the traditional injection mechanism is implemented by using a complex needle outlet operation mechanism, so that the needle group is inserted into the human body by using a soft needle sleeved outside the hard needle, then the hard needle is pulled out, and the operation mode of leaving the soft needle on the human body is more complicated.

In addition, in view of the foregoing problems with conventional injection mechanisms, the transfer mechanism coupled to the injection mechanism is relatively complex in the route of drug solution delivery after being connected to the drug storage mechanism, and it is difficult to provide a desirable injection method with the combined structure of the mechanisms in the drug injection system. It is in fact necessary to further optimize the design of the needle ejection mechanism in the drug injection system.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the utility model provides a go out needle mechanism, injection runner module and medicine injection system, solves the play needle mechanism among the current medicine injection system because of using complicated play needle operating device to carry out, causes the puncture needle to take out the puncture needle after the puncture needle with the pipeline subassembly cover locates the pattern of puncture needle outside, leaves pipeline subassembly in the operation mode of human body have the comparatively loaded down with trivial details problem of action.

The technical proposal provided by the invention is as follows: provided is a needle-out mechanism, which includes:

A housing;

The needle outlet operation assembly is arranged in the shell and comprises a needle outlet assembly, a rotating assembly and a needle seat, wherein the needle outlet assembly can be movably assembled in the shell, the rotating assembly can be rotatably arranged in the shell and can be driven to rotate by the needle outlet assembly, the needle seat can be movably assembled in the rotating assembly, and the needle seat can be driven by the rotating assembly to move between a first position and a second position; and

The puncture assembly is arranged in the shell and comprises a puncture needle and a pipeline assembly, the puncture assembly is connected with the needle seat, the pipeline assembly can be combined with the puncture needle, in a needle-out state, the puncture assembly combined with the pipeline assembly and the puncture needle is driven by the needle-out operation assembly, the puncture assembly at least partially penetrates out of the shell, and in a needle-retracting state, the puncture needle moves along with the needle seat to retract the puncture needle.

In the needle discharging mechanism, the needle discharging component can be assembled in the shell in a linear motion manner, and the rotating component can be driven by the needle discharging component to rotate in a forward direction and a reverse direction and is arranged in the shell.

In the needle outlet mechanism, the needle outlet operation assembly further comprises a needle seat plug, the needle seat plug is arranged in the shell, the puncture needle stretches into the needle seat plug, the pipeline assembly is positioned in the needle seat plug and sleeved on the puncture needle, and the needle seat can be driven by the rotating assembly to move between the rotating assembly and the needle seat plug.

In the needle outlet mechanism, the needle seat plug is provided with a containing chamber, a liquid injection chamber positioned at the lower end of the containing chamber, a connecting port positioned at one side of the liquid injection chamber and communicated with the liquid injection chamber, and a sealing part positioned at the lower end of the liquid injection chamber and exposed at the back surface of the shell, wherein in the needle outlet state, the puncture assembly penetrates out of the sealing part at the bottom of the needle seat plug, and in the needle retraction state, a part of the pipeline assembly penetrates out of the sealing part.

In the needle discharging mechanism, a screw hole is arranged in the rotating component, the needle seat is provided with a screw connection part and is screwed in the screw hole of the rotating component, the upper end of the rotating component is provided with a gear part, the needle discharging component is provided with a long rail groove and a driving tooth part positioned in the long rail groove, the length of the long rail groove is set to be an operation stroke, the driving tooth part comprises a forward rotation rack section and a reverse rotation rack section, the forward rotation rack section and the reverse rotation rack section are respectively positioned at two sections which are different in the axial direction of the long rail groove and are positioned at two sides which are different, the gear part of the rotating component is positioned in the long rail groove, and along with the movement of the needle discharging component in the operation stroke, the gear part of the rotating component can be meshed with one of the forward rotation rack section and the reverse rotation rack section respectively, so that the rotating component can be driven by the needle discharging component to rotate forward and reversely.

In the needle outlet mechanism, the shell comprises a base and a shell sleeved outside the base, a contact end cover capable of moving in a movable stroke is arranged on the back side of the shell, and an elastic component is arranged between the shell and the contact end cover; the needle outlet component is arranged in the base and can move at the distance of an operation stroke, the needle outlet component can be respectively buckled in the base at the starting point position and the end point position of the operation stroke to be in a locking state, the elastic force of the elastic component acts on the contact end cover to enable a part of the contact end cover to protrude out of the back side of the shell, and the contact end cover can be forced into the shell to release the locking state of the needle outlet component at the starting point position of the operation stroke.

In the needle discharging mechanism, the base is provided with a first buckling hole at the starting point of the operation stroke, and a second buckling hole at the end point of the action stroke, the rear end of the needle discharging component is provided with a buckling hook, the buckling hook can be selectively buckled in the first buckling hole or the second buckling hole, the contact end cover is provided with an unlocking pushing part, the contact end cover is forced to enter the shell, and the unlocking pushing part can push the buckling hook of the needle discharging component to push away from the first buckling hole, so that the locked state of the needle discharging component which is buckled is released.

The invention of the integral structure of the front needle-pulling mechanism mainly utilizes the combined structure of the needle-pulling assembly in the needle-pulling assembly component, the rotating assembly is driven to generate forward rotation and reverse rotation in one operation stroke of the needle-pulling assembly, the rotating assembly drives the needle seat connected with the needle seat group to firstly pull out the needle of the needle-pulling assembly combined with the puncture needle, and then the puncture needle is driven to lift along with the needle seat to retract the puncture needle and leave the needle-pulling state that the tube-pulling assembly extends out of the shell, thereby the operation action of the needle-pulling mechanism is simpler and more convenient, and the invention of product optimization is achieved.

The needle outlet mechanism can further utilize the shell to comprise a base and a shell sleeved outside the base, wherein a contact end cover capable of moving in a movable stroke and an elastic component positioned between the shell and the contact end cover are arranged on the back side of the shell; the needle outlet component is arranged in the base and can move at the distance of an operation stroke, the needle outlet component can be respectively buckled in the base at the starting point position and the end point position of the operation stroke to be in a locking state, the elastic force of the elastic component acts on the contact end cover to enable a part of the contact end cover to protrude out of the back side of the shell, and the contact end cover can be forced into the shell to release the locking state of the needle outlet component at the starting point position of the operation stroke. Thereby providing a safety protection mechanism for the needle outlet mechanism, ensuring that the needle outlet assembly can not be pressed by mistake to outlet the needle when the needle outlet mechanism is not used, and enabling the contact end cover to be sleeved on the periphery of the puncture assembly after injection, so that the puncture assembly can not be exposed to hurt people.

In order to achieve the above object, the present invention further provides an injection runner module, comprising:

a needle-out mechanism as described above; and

The switching mechanism comprises a switching seat, a flow passage switching valve, a piston cylinder and a piston rod, wherein the switching seat is arranged in the needle outlet mechanism, the flow passage switching valve and the piston cylinder are both arranged in the switching seat, the switching seat is provided with a liquid medicine input flow passage and a liquid medicine output flow passage which are communicated with the piston cylinder, the flow passage switching valve is communicated with the puncture assembly of the needle outlet mechanism through the liquid medicine output flow passage of the switching seat, and the piston rod can be linearly arranged in the piston cylinder.

In the injection runner module, the runner switching valve comprises a one-way input valve part and a one-way output valve part, two ends of the piston cylinder are respectively provided with a connecting end and a cylinder port end, the connecting end is connected with the runner switching valve, the cylinder port end extends out of the switching seat, a piston chamber is arranged in the piston cylinder, the connecting end is provided with a liquid medicine inlet and a liquid medicine outlet which are communicated with the piston chamber, the liquid medicine inlet is connected with the one-way input valve part, the liquid medicine outlet is connected with the one-way output valve part, the piston rod can be driven to linearly move in the piston chamber, and can extract liquid medicine to be unidirectionally input into the piston chamber through the liquid medicine input runner and the one-way input valve part, and the liquid medicine is unidirectionally output to the liquid medicine output runner through the one-way output valve part.

The invention of the integral structure of the injection runner module not only has the effect of optimizing the needle outlet action of the needle outlet mechanism, but also can enable the switching mechanism to directly store the medicine in the module by the runner configuration of the switching mechanism, and enable the medicine in the medicine storage module to be directly conveyed to the needle outlet mechanism by the switching mechanism, so that a driving module externally connected with the switching mechanism can not be contacted with the injection medicine in the medicine injection process, and the possibility of pollution of the medicine is reduced.

In order to achieve the foregoing object, the present invention further provides a drug injection system comprising:

The injection runner module comprises the needle outlet mechanism and a switching mechanism, wherein the switching mechanism is arranged on one side of the needle outlet mechanism and comprises a switching seat, a runner switching valve, a piston cylinder and a piston rod, the switching seat is arranged in the needle outlet mechanism, the runner switching valve and the piston cylinder are both arranged in the switching seat, the switching seat is provided with a liquid medicine input runner and a liquid medicine output runner which are communicated with the piston cylinder, the runner switching valve is communicated with the puncture assembly of the needle outlet mechanism through the liquid medicine output runner of the switching seat, and the piston rod is arranged in the piston cylinder in a linear motion mode;

the medicine storage module comprises a medicine liquid storage container and an outer sleeve, wherein the medicine liquid storage container comprises a container body filled with medicine liquid and a container connector connected with the container body, the container connector is connected with a medicine liquid input flow passage of the switching mechanism of the injection flow passage module, and the outer sleeve can be sleeved outside the medicine liquid storage container and is connected with a shell of the needle outlet module; and

A driving module which can be assembled and disassembled to connect the injection runner module and can drive the piston rod of the switching mechanism.

In the above-mentioned medicine injection system, the container connector includes a connector body, the connector body includes a container connection end, a transfusion connection end and a transfusion end, the transfusion flow channel extends from the container connection end to the transfusion connection end, and the container connection end is connected with the container body, the transfusion connection end is connected with the medicine liquid input flow channel of the switching mechanism, the transfusion end has a transfusion branch channel communicated with the transfusion flow channel, and has a transfusion plug installed in the transfusion branch channel to seal the transfusion branch channel, the transfusion plug has a plug end exposed at the outer side of the connector body, and the plug end is exposed at the back of the external case.

In the above-mentioned drug injection system, the shell of the needle-out mechanism comprises a base and a shell sleeved outside the base, a contact end cover capable of moving in a movable stroke is arranged on the back side of the shell, and an elastic component is arranged between the shell and the contact end cover; the needle outlet component is arranged in the base and can move at the distance of an operation stroke, the needle outlet component can be respectively buckled in the base at the starting point position and the end point position of the operation stroke to be in a locking state, the elastic force of the elastic component acts on the contact end cover to enable a part of the contact end cover to protrude out of the back side of the shell, and the contact end cover can be forced into the shell to release the locking state of the needle outlet component at the starting point position of the operation stroke;

The flow passage switching valve comprises a one-way input valve part and a one-way output valve part, wherein two ends of the piston cylinder are respectively provided with a connecting end and a cylinder opening end, the connecting end is connected with the flow passage switching valve, the cylinder opening end extends out of the switching seat, a piston chamber is arranged in the piston cylinder, the connecting end is provided with a liquid medicine inlet and a liquid medicine outlet which are communicated with the piston chamber, the liquid medicine inlet is connected with the one-way input valve part, the liquid medicine outlet is connected with the one-way output valve part, the piston rod can be driven to linearly move in the piston chamber, and can extract liquid medicine to be unidirectionally input into the piston chamber through the liquid medicine input flow passage and the one-way input valve part, and the liquid medicine is unidirectionally output to the liquid medicine output flow passage through the one-way output valve part;

The driving module comprises a shell, a control unit, a motor with a mandrel and a transmission assembly, wherein the control unit, the motor and the transmission assembly are all arranged in the shell, the motor is electrically connected and controlled by the control unit, the transmission assembly comprises a driving wheel, a connecting rod and a driving piece, the driving wheel is arranged on the mandrel of the motor in a set mode, one end of the connecting rod is eccentrically pivoted on the driving wheel, the other end of the connecting rod is connected with the driving piece, the tail end of the piston rod is detachably connected with the driving piece, and the moving direction of the connecting rod and the driving piece is parallel to the central axis of the piston rod.

In the above-mentioned medicine injection system, the casing includes a casing body and a casing cover mounted on the casing body, in which an electric energy supply unit and two electric connectors can be mounted, the electric energy supply unit can be electrically connected with the control unit by means of two electric connectors, and an insulating sheet is set between one end of the electric energy supply unit and the electric connector whose position is correspondent and used for insulating and isolating, and the insulating sheet is extended out of the casing.

In the above-mentioned medicine injection system, the driving module includes a start switch, a confirm switch and a counting element, the start switch, the confirm switch and the counting element are all electrically connected with the control unit, the start switch is installed in the casing and located at the end position of the operation stroke of the needle outlet assembly, and the needle outlet assembly can trigger the start switch when being pressed to move to the end position;

The confirming switch is arranged in the shell and positioned at the end position of the movable stroke of the contact end cover, and the contact end cover can trigger the confirming switch when being pressed and moved to the end position;

The counting switch is arranged in the shell and is positioned on the moving stroke of the driving piece, and the driving piece can trigger the counting element when being driven to move.

The invention of the whole composition structure of the medicine injection system can ensure the use safety of the medicine injection system by the runner configuration of the switching mechanism and the detachable connection of the switching mechanism to the medicine liquid storage container of the medicine storage module, and the detachable connection of the piston rod of the switching mechanism to the driving module and the driving of the driving mechanism, and can convey the medicine liquid in the medicine container to the puncture assembly to perform medicine liquid injection, thereby the modularized combination structure and the disposable use mode of the medicine injection system, and the combination structure of the switching mechanism externally connected with the driving module ensures that the driving module can not be contacted with the injection medicine liquid in the medicine liquid injection process, and simultaneously has the driving module to provide accurate control of injection driving force and injection dosage.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the needle ejection mechanism of the present invention.

Fig. 2 is an exploded perspective view of the preferred embodiment of the needle mechanism shown in fig. 1.

Fig. 3 is a top plan view of the combination of the needle exit assembly and the rotating assembly of the preferred embodiment of the needle mechanism of fig. 2.

Fig. 4 is a schematic side cross-sectional view of the preferred embodiment of the needle mechanism shown in fig. 1-3.

Fig. 5 is a schematic side cross-sectional view of the preferred embodiment of the needle mechanism shown in fig. 1-3 from another perspective.

Fig. 6 is a schematic perspective view of a preferred embodiment of the injection runner module of the present invention.

Fig. 7 is an exploded perspective view of the preferred embodiment of the injection runner module shown in fig. 6.

Fig. 8 is an exploded perspective view of the switching mechanism in the preferred embodiment of the injection runner module shown in fig. 7.

Fig. 9 is an exploded perspective view of another view of the switching mechanism in the preferred embodiment of the injection runner module shown in fig. 7.

Fig. 10 is a schematic partial cross-sectional view of the preferred embodiment of the injection runner module shown in fig. 6.

Fig. 11 is a schematic perspective view of a preferred embodiment of the drug injection system of the present invention.

Fig. 12 is an exploded isometric view of the preferred embodiment of the drug injection system of fig. 11.

Fig. 13 is an exploded perspective view of a drug storage module in the preferred embodiment of the drug injection system of fig. 11 and 12.

Fig. 14 is a schematic partial cross-sectional view of the drug storage module and injection runner module of fig. 11-13 after being assembled.

Fig. 15 is a partially exploded perspective view of the drive module of the preferred embodiment of the drug injection system of fig. 11 and 12.

FIG. 16 is a partial top plan view of the drive module of FIG. 15 with the cover removed.

Fig. 17 is a top plan view of the preferred embodiment of the drug injection system of fig. 11 and 12 with the cover removed.

Fig. 18 is a schematic perspective view of a piston rod of the motor-coupling transmission assembly connection switching mechanism in the driving module shown in fig. 15 to 17.

Fig. 19 is a schematic perspective view of a piston rod of the motor-coupling transmission assembly connection switching mechanism in the driving module shown in fig. 15 to 17.

Fig. 20 is a schematic view (one) illustrating the operation of the needle ejection mechanism according to the preferred embodiment of the drug injection system of the present invention.

Fig. 21 is a schematic view (two) illustrating the operation of the needle ejection mechanism according to the preferred embodiment of the drug injection system of the present invention.

Fig. 22 is a schematic view (III) illustrating the operation of the needle ejection mechanism in the needle ejection operation according to the preferred embodiment of the drug injection system of the present invention.

Fig. 23 is a schematic diagram (one) showing the operation of the drug injection system according to the preferred embodiment of the present invention when the driving mechanism drives the piston rod into drug solution delivery.

Fig. 24 is a schematic diagram of an operation of the drug injection system according to the preferred embodiment of the present invention (ii) in which the driving mechanism drives the piston rod into drug solution delivery.

Fig. 25 is a schematic view (one) of the operation of the preferred embodiment of the drug injection system of the present invention in which the contact cap of the ejection mechanism is pressed to unlock the ejection assembly.

Fig. 26 is a schematic diagram of the operation of the preferred embodiment of the drug injection system of the present invention in unlocking the ejection needle assembly when the contact end cap of the ejection needle mechanism is pressed.

Fig. 27 is a schematic view showing the operation of the preferred embodiment of the drug injection system of the present invention when the ejector assembly of the ejector mechanism is pressed.

The reference numerals simply illustrate:

1: an injection runner module; 2: a drug storage module; 3: a driving module;

10: a needle discharging mechanism; 11: a housing; 111: a base; 1111: a first snap hole; 1112: a second snap hole; 112: a housing; 113: a contact end cap; 1131: unlocking the pushing part; s: a movable journey; 114: an elastic component; 12: a needle-out operation assembly; 121: a needle outlet assembly; l: an operating stroke; 1211: a long rail groove; 1212: a driving tooth portion; 12121: a forward rotation rack section; 12122: reversing the rack segment; 1213: a buckling hook; 122: a rotating assembly; 1220: a screw hole; 1221: a gear portion; 123: a needle seat plug; 1231: a housing chamber; 1232: a liquid injection chamber; 1233: a connection port; 1234: a sealing part; 1235: a stopper; 124: a needle stand; 1241: a screw connection part; 13: a puncture assembly; 131: a puncture needle; 132: a conduit assembly; 1321: a needle end sleeve joint part;

20: a switching mechanism; 21: an adapter; 211: a liquid medicine input flow passage; 212: a liquid medicine output flow passage; 22: a flow passage switching valve; 221: a one-way input valve section; 222: a one-way output valve section; 23: a piston cylinder; 230: a piston chamber; 231: a connection end; 2311: a liquid medicine inlet; 2312: a liquid medicine outlet; 232: a nozzle end; 24: a piston rod;

30: a liquid medicine storage container; 31: a container body; 32: a container joint; 321: a joint body; 3210: an infusion flow channel; 3211: a container connection end; 3212: a transfusion connection end; 3213: an infusion end; 32131: a transfusion branch; 3214: an infusion plug; 32141: a plug end;

40: an outer shell;

50: a housing; 51: a housing body; 52: a cover; 53: an electric power supply unit; 54: an electrical connection; 55: an insulating sheet; 56: a contact piece;

60: a control unit; 61: a switch; 62: starting a switch; 63: a switch is confirmed; 64: a counting element; 65: an indicator light; 66: a sound generator;

70: a motor;

80: a transmission assembly; 81: a driving wheel; 82: a connecting rod; 83: the driving piece.

Detailed Description

The technical means adopted by the present invention to achieve the intended purpose will be further described below with reference to the accompanying drawings and preferred embodiments of the present invention.

According to the description of the present invention, the present invention includes a needle ejection mechanism, an injection runner module 1, as shown in fig. 1,6 and 11, and a drug injection system, wherein the injection runner module 1 includes the needle ejection mechanism 10 and a transfer mechanism 20, and the drug injection system includes the injection runner module 1, a drug storage module 2 and a driving module 3. The specific constituent configurations of the needle ejection mechanism 10, the injection runner module 1, and the drug injection system according to the present invention will be described below with reference to the accompanying drawings.

Referring now to fig. 1-5, which illustrate a preferred embodiment of the needle ejection mechanism 10 of the present invention, it can be seen from the drawings that the needle ejection mechanism 10 includes a housing 11, a needle ejection operating assembly 12, and a puncturing assembly 13.

As shown in fig. 1 to 5, the housing 11 has an assembling space therein, and the needle-out operation assembly 12 and the puncture assembly 13 are assembled in the assembling space of the housing 11. In the preferred embodiment, the housing 11 includes a base 111 and a housing 112 sleeved outside the base 111, a contact end cap 113 capable of moving in a moving stroke S is mounted on the back side of the housing 112, and an elastic component 114 is disposed between the housing 112 and the contact end cap 113, wherein the elastic component 114 may be a spring, a shrapnel or other elastic components, and in the preferred embodiment, the elastic component 114 is a compression spring.

As shown in fig. 1 to 5, the needle-out operation assembly 12 is disposed in the housing 11 and is connected to the puncture assembly 13, the needle-out operation assembly 12 includes a needle-out assembly 121, a rotation assembly 122 and a needle seat 124, the needle-out assembly 121 is movably disposed in the housing 11, the rotation assembly 122 is rotatably disposed in the housing 11, the rotation assembly 122 is driven by the needle-out assembly 121 to rotate, the needle seat 124 is movably disposed in the rotation assembly 122, and the needle seat 124 is driven by the rotation assembly 122 to move between a first position and a second position.

As shown in fig. 1 to 5, in the preferred embodiment, the needle discharging assembly 121 is assembled in the housing 11 in a linearly movable manner, and the rotating assembly 122 is installed in the base 111 of the housing 11 in a manner that the needle discharging assembly 121 can rotate forward and backward. In the preferred embodiment, the needle-out component 121 is a button-type component, and the rotating component 122 is a sleeve-type component, but the needle-out component 121 and the rotating component 122 are not limited to the above-mentioned shapes.

As shown in fig. 1 to 5, the upper end of the rotating assembly 122 has a gear portion 1221, the needle discharging assembly 121 has a driving tooth portion 1212, and when the needle discharging assembly 121 is pushed, the driving tooth portion 1212 and the gear portion 1221 are engaged with each other to drive the rotating assembly 122 to rotate forward and then rotate backward.

As shown in fig. 1 to 5, in the preferred embodiment, the needle assembly 121 has a long rail 1211 extending linearly along the operation direction, and the length of the long rail 1211 is set to be the operation stroke L, the driving gear portion 1212 includes a forward rotation rack segment 12121 and a reverse rotation rack segment 12122, the forward rotation rack segment 12121 and the reverse rotation rack segment 12122 are respectively located at two different sections in the length direction of the long rail 1211 and at two different sides, the length of the forward rotation rack segment 12121 and the length of the reverse rotation rack segment 12122 are about half of the operation stroke L, the gear portion 1221 of the rotating assembly 122 is located in the long rail 1211, and as the needle assembly 121 moves in the operation stroke L, the gear portion 1221 of the rotating assembly 122 can be meshed with one of the forward rotation rack segment 12121 and the reverse rotation rack segment 12122, respectively, so that the rotating assembly 122 can be driven to rotate forward and reverse by the needle assembly 121.

As shown in fig. 1 to 5, the needle discharging operation assembly 12 may further include a needle seat plug 123, the needle seat plug 123 is a soft member made of rubber, etc., the needle seat plug 123 is disposed in the base 111 and adjacent to the back of the housing 11, the needle seat plug 123 has a receiving chamber 1231, a filling chamber 1232 disposed at a lower end of the receiving chamber 1231, a connecting port 1233 disposed at one side of the filling chamber 1232 and communicating with the filling chamber, and a sealing portion 1234 disposed at a lower end of the filling chamber 1232 and exposed at the back of the housing 11, a blocking portion 1235 is disposed between the receiving chamber 1231 and the filling chamber 1232, the needle seat 124 is movably disposed in the rotating assembly 122, and the needle seat 124 is driven by the rotating assembly 122 to move up and down between the rotating assembly 122 and the needle seat plug 123.

As shown in fig. 3 and fig. 25 to 27, the needle-out assembly 121 is mounted in the base 111 and can move at a distance of an operation stroke L, the needle-out assembly 121 can be respectively locked in the base 111 at a start position and an end position of the operation stroke L, the elastic force of the elastic assembly 114 acts on the contact end cover 113, so that a part of the contact end cover 113 protrudes out of the back side of the housing 112, and the contact end cover 113 can be forced into the housing 112 to release the locked state of the needle-out assembly 121 at the start position of the operation stroke L.

As shown in fig. 25 to 27, in the preferred embodiment, the base 111 has a first fastening hole 1111 at the start position of the operation stroke L, and a second fastening hole 1112 at the end position of the operation stroke L, the rear end of the needle-out assembly 121 has a fastening hook 1213, the fastening hook 1213 can be selectively fastened in the first fastening hole 1111 or the second fastening hole 1112, the contact end cover 113 has an unlocking pushing portion 1131, the contact end cover 113 is forced into the housing 112, and the unlocking pushing portion 1131 can push the fastening hook 1213 of the needle-out assembly 121 to disengage from the first fastening hole 1111, so as to release the locked state of the needle-out assembly 121.

As shown in fig. 1 to 5, the puncture assembly 13 is installed in the housing 11, and the puncture assembly 13 can be operated to generate a needle-out state and a needle-retracting state. The puncture assembly 13 comprises a puncture needle 131 and a pipeline assembly 132, the puncture needle 131 is assembled with the needle seat 124 of the needle outlet operation assembly 12, the pipeline assembly 132 can be combined with the puncture needle 131, the puncture assembly 13 after the pipeline assembly 132 and the puncture needle 131 are combined is driven by the needle outlet operation assembly 12 in the needle outlet state, the puncture assembly 13 at least partially penetrates out of the shell 11, and in the needle retraction state, the puncture needle 131 rises along with the needle seat 124 to retract the puncture needle 131.

As shown in fig. 4, 5 and 20 to 22, in the preferred embodiment, the upper section of the puncture needle 131 of the puncture assembly 13 is assembled with the needle holder 124, the lower section of the puncture needle 131 extends downward into the needle holder plug 123, the pipe assembly 132 is located in the needle holder plug 123 and is sleeved outside the lower section of the puncture needle 131, the upper end of the pipe assembly 132 has a needle end sleeving part 1321, and the needle end sleeving part 1321 is sleeved at the bottom end of the needle holder 124, in the needle-out state, the puncture assembly 13 after the pipe assembly 132 is combined with the puncture needle 131 can be operated to firstly penetrate downward out of the sealing part 1234 at the bottom of the needle holder plug 123, in the needle-out state, the puncture needle 131 is lifted up along with the needle holder 124 to retract the puncture needle 131, and the pipe assembly 132 is still left, and a part of the pipe assembly 132 maintains a state of penetrating out of the sealing part 1234 and being located outside the housing 11.

As shown in fig. 1-5, in the preferred embodiment, the rotating assembly 122 is in a threaded combination with the hub 124. That is, a screw hole 1220 is provided in the rotating assembly 122, the outer peripheral surface of the hub 124 has a screw portion 1241 and is screwed in the screw hole 1220 of the rotating assembly 122, so that the clockwise and anticlockwise rotation of the rotating assembly 122 can drive the hub 124 to move up and down. In the preferred embodiment, it is further provided that the needle assembly 121 is capable of driving the rotating assembly 122 forward and driving the needle seat 124 to push the puncture assembly 13 downward to withdraw the needle in the operation stroke L, and then the needle assembly 121 drives the rotating assembly 122 to reverse and driving the needle seat 124 and the puncture needle 131 connected thereto upward to withdraw the needle, and a state that a part of the pipe assembly 132 extends out of the housing 11 is maintained.

In the preferred embodiment, the needle discharging mechanism 10 can be applied to a syringe, as shown in fig. 3 to 5 and fig. 20 to 27, when the needle discharging mechanism 10 is not used, the puncture assembly 13 of the needle discharging mechanism 10 is hidden in the housing 11, and when the user operates the needle discharging mechanism 10, the user faces the human body to be injected with the back side of the needle discharging mechanism 10 and applies pressure to the housing 11, so that the contact end cover 113 on the back side of the housing 11 is pressed to be retracted in the housing 11, the unlocking pushing portion 1131 of the contact end cover 113 pushes the buckling hook 1213 of the needle discharging assembly 121 to be separated from the first buckling hole 1111, and the locked state of the needle discharging assembly 121 at the starting position of the operating stroke L is released until the back side of the housing 11 is attached to the human body to be injected.

Secondly, the needle outlet assembly 121 is pressed, the needle outlet assembly 121 is moved to the final position at the starting position of the operation stroke L, wherein the needle outlet assembly 121 drives the rotating assembly 122 to rotate forward and drives the needle seat 124 and the puncture assembly 13 combined with the puncture needle 131 to push out of the needle seat plug 123 and to penetrate into the human body, and then drives the rotating assembly 122 to rotate reversely and drives the needle seat 124 and the puncture needle 131 connected with the needle seat assembly 121 to retract into the needle seat plug 123 in the process of moving the needle outlet assembly 121 to the final position of the operation stroke L, the pipeline assembly 132 is still left, a part of the pipeline assembly 132 penetrates out of the needle seat plug 123 and is positioned outside the shell 11, the pipeline assembly 132 maintains the state of penetrating into the human body, and at the moment, the buckling hook 1213 of the needle outlet assembly 121 which moves to the final position of the operation stroke L can be buckled in the second buckling hole 111 of the base 12, so that the needle outlet assembly 121 presents the buckled locking state, and the user can perform injection of the liquid medicine without maintaining the action of pressing the needle outlet assembly 121. After the injection of the liquid medicine is completed, the needle outlet mechanism 10 is moved away from the human body, the contact end cover 113 is pushed by the elastic force of the elastic component 114 to reset, and is sleeved outside the pipeline component 132, so that the safety protection effect is provided.

The tubing assembly 132 may be a soft needle or may be a hose, such as a heat shrink hose. However, the duct assembly 132 is not limited to the above, and any duct assembly 132 may be used as long as it is suitable for being combined with the puncture needle 131 and penetrating into the human body, is suitable for being placed on the human body, has a duct, and allows the liquid to flow into the human body through the duct.

As shown in fig. 6 and 7, a preferred embodiment of the injection runner module 1 of the present invention is disclosed, and it can be seen from the drawings that the injection runner module 1 includes a needle discharging mechanism 10 and a transferring mechanism 20, and the constituent structure of the needle discharging mechanism 10 is as described above and will not be repeated herein.

As shown in fig. 7, 8 and 10, the adapter 20 comprises an adapter 21, a runner switching valve 22, a piston cylinder 23 and a piston rod 24, the adapter 21 can be assembled on one side of the housing 11 of the needle outlet mechanism 10, the adapter 21 has a liquid medicine input runner 211 and a liquid medicine output runner 212, the runner switching valve 22 is installed in the adapter 21, the runner switching valve 22 comprises a one-way input valve portion 221 and a one-way output valve portion 222, two ends of the piston cylinder 23 are respectively provided with a connecting end 231 and a cylinder opening end 232, the connecting end 231 is positioned in the adapter 21 and is assembled with the runner switching valve 22, the cylinder opening end 232 can extend out of the adapter 21, the piston cylinder 23 is provided with a piston chamber 230, the connection end 231 is provided with a liquid medicine inlet 2311 and a liquid medicine outlet 2312 which are communicated with the piston chamber 230, the liquid medicine inlet 2311 is connected with the one-way input valve part 221, the liquid medicine outlet 2312 is connected with the one-way output valve part 222, the piston rod 24 is arranged in the piston chamber 230 of the piston cylinder 23 and extends out of the adapter seat 21, the piston rod 24 can be driven to linearly move in the piston chamber 230 of the piston cylinder 23, wherein when the piston rod 24 moves backwards, liquid medicine can be extracted and is unidirectionally input into the piston chamber 230 through the liquid medicine input flow passage 211 and the one-way input valve part 221, and then when the piston rod 24 moves forwards, the liquid medicine in the piston chamber 230 is unidirectionally output to the liquid medicine output flow passage 212 through the one-way output valve part 222, and the liquid medicine for injection is input into the needle outputting mechanism 10.

As shown in fig. 7, 8-10, the piston rod 24 of the injection runner module 1 can be directly manually operated, or the piston rod 24 is externally connected with a manual driving module 3, or is externally connected with an electric driving module 3, so as to drive the injection runner module 1 to perform the injection action of the liquid medicine. In the injection runner module 1, the injection operation of introducing the medicine liquid into the needle outlet mechanism 10 by the switching mechanism 20 is as described above, and will not be described here.

As shown in fig. 11 to 12, a preferred embodiment of the drug injection system of the present invention is disclosed, the drug injection system includes the injection runner module 1, a drug storage module 2 and a driving module 3, and the specific structure of the injection runner module 1 is as described above and will not be repeated herein.

As shown in fig. 12 to 14, the drug storage module 2 includes a drug solution storage container 30 and an external shell 40, the drug solution storage container 30 includes a container body 31 and a container connector 32, the interior of the container body 31 can be filled with a drug solution, that is, the container body 31 can be pre-filled with a drug solution, or the container body 31 is a part that is not originally filled with a drug solution, and a predetermined drug solution is injected into the interior of the container body 31 before use. The container connector 32 is assembled on the container body 31, the liquid medicine storage container 30 can be connected with the liquid medicine input flow channel 211 of the switching mechanism 20 of the injection flow channel module 1 through the container connector 32, and the outer casing 40 can be sleeved on the outer side of the liquid medicine storage container 30 and connected with the shell 11 of the needle outlet module.

As shown in fig. 12 to 14, in the preferred embodiment, the container body 31 may be a bag-like member or a bottle-like member capable of storing the medical solution, and in the preferred embodiment, the container body 31 is a bag-like member, but not limited thereto. The container connector 32 is assembled with the container body 31, and the container connector 32 has an infusion flow channel 3210 communicating with the container body 31 and is connected to the liquid medicine input flow channel 211 of the switching mechanism 20 through the infusion flow channel 3210.

As shown in fig. 12 to 14, the container connector 32 includes a connector body 321, the connector body 321 includes a container connecting end 3211 and an infusion connecting end 3212, the infusion flow channel 3210 extends from the container connecting end 3211 to the infusion connecting end 3212, the container connecting end 3211 is assembled with the container body 31, and the infusion connecting end 3212 is assembled with the liquid medicine input flow channel 211 of the switching mechanism 20.

In the preferred embodiment shown in fig. 12 to 14, the connector body 321 may further have an infusion end portion 3213, in which an infusion branch 32131 communicating with the infusion channel 3210 is provided in the infusion end portion 3213, and an infusion plug 3214 is provided in the infusion branch 32131 to seal the infusion branch 32131 with the infusion plug 3214, the infusion plug 3214 has a plug end 32141 exposed to the outside of the connector body 321, the plug end 32141 is exposed to the back of the outer shell 40, and is used to provide the added liquid medicine to penetrate the plug end 32141 through the syringe and enter the container body 31 of the liquid medicine storage container 30 through the infusion branch 32131 and the infusion channel 3210.

As shown in fig. 12 and 15 to 17, the driving module 3 is an electric driving module 3, the driving module 3 can be detachably connected with the injection runner module 1, the driving module 3 contains an electric power supply unit 53 or can be externally connected with a power supply, the driving module 3 comprises a housing 50, a control unit 60, a motor 70 and a transmission assembly 80, the control unit 60, the motor 70 and the transmission assembly 80 are all arranged in the housing 50, the motor 70 is electrically connected and controlled by the control unit 60, the control unit 60 is provided with a switch 61 displayed outside the housing 50, the transmission assembly 80 is connected with the motor 70 and detachably connected with the piston rod 24 of the switching mechanism 20, and the control unit 60 determines the actuation time of the motor 70 according to a default injection mode, so that the motor 70 can be controlled to be started, and the piston rod 24 is driven to actuate through the transmission assembly 80.

As shown in fig. 12 and 15 to 17, in the preferred embodiment, the casing 50 includes a casing body 51 and a casing cover 52 mounted on the casing body 51, and an electric power supply unit 53 can be mounted in the casing 50, where the electric power supply unit 53 can be a battery or a battery pack formed by a plurality of batteries, and two electric connectors 54 electrically connected to the control unit 60 are disposed in the casing 50, and two electrode ends of the electric power supply unit 53 can be respectively connected to the two electric connectors 54, and electrically connected to the control unit 60 through the two electric connectors 54, and supply electric power to the control unit 60 and the motor 70 of the driving module 3. Before the driving module 3 is not used, an insulating sheet 55 is disposed between the electric connector 54 corresponding to one end of the electric power supply unit 53 and its position for insulation, the insulating sheet 55 extends out of the casing 50, and when the driving module is used, the insulating sheet 55 is pulled out again, so that the electric power supply unit 53 is electrically connected with the electric connector 54.

As shown in fig. 15 to 17 and fig. 18 to 19, in the preferred embodiment, the transmission assembly 80 includes a driving wheel 81, a connecting rod 82 and a driving member 83, the driving wheel 81 is assembled with the spindle of the motor 70, one end of the connecting rod 82 is eccentrically pivoted on the driving wheel 81, the other end of the connecting rod 82 is connected with the driving member 83, and the driving member 83 is detachably connected with the end of the piston rod 24, preferably, the movement directions of the connecting rod 82 and the driving member 83 are parallel to the central axis of the piston rod 24, so that the transmission assembly 80 drives the piston rod 24 to repeatedly act in a straight line in the piston cylinder 23, and good smoothness is achieved. Referring to fig. 8 and fig. 18 to fig. 19, the combined structure between the driver 83 and the end of the piston rod 24 can utilize the piston rod 24 to form a middle L-shaped assembling slot, the driver 83 has a middle hole and a assembling block located on the inner wall of the middle hole, so that the piston rod 24 is assembled in the middle hole of the driver 83 along the axial direction, and the assembling block is utilized to move along the L-shaped assembling block directly and then rotate and clamp to clamp and position the end of the assembling slot, thereby improving the convenience of assembling the piston rod 24 and the driver 83.

As shown in fig. 16 to 17 and fig. 20 to 22, the driving module 3 further includes a start switch 62, the start switch 62 is disposed on the housing 50 and located at an end position of the movement stroke L of the needle assembly 121, and the start switch 62 is electrically connected to the control unit 60, so that the start switch 62 is triggered when the needle assembly 121 is pressed to move to the end position, and the control unit 60 causes the motor 70 to start to perform the infusion.

As shown in fig. 16 to 17 and 20 to 22, the driving module 3 further includes a confirmation switch 63, the confirmation switch 63 is electrically connected to the control unit 60, and the confirmation switch 63 is located at an end position of the moving stroke S of the contact end cover 113, or the housing body 51 further includes an abutment plate 56 corresponding to the confirmation switch 63, so that the contact end cover 113 can trigger the confirmation switch 63 directly or via the abutment plate when it is determined to be pushed into the housing 11, so as to confirm the installation on a human body, and enter an injection preparation state (i.e. a standby state). The contact end cap 113 is in an idle state when the positive switch 63 is triggered by not being pushed into the housing 11.

As shown in fig. 16 to 17 and fig. 18 to 19, the driving module 3 further includes a counting element 64, the counting element 64 is disposed in the housing 50 and electrically connected to the control unit 60, the counting element 64 is located at a predetermined position of the motion path of the driving member 83, so that the counting element 64 can be triggered when the driving member 83 is pushed to the predetermined position, and an injection signal is output from the counting element 64 to the control unit 60, and the control unit 60 receives the injection signal and counts the number of injections to determine the injection dose.

As shown in fig. 11 to 17, the driving module 3 further includes an indicator lamp 65, the indicator lamp 65 is electrically connected to the control unit 60 and can emit light to be exposed outside the casing 50, the indicator lamp 65 can be controlled to generate on, off, status and other indicator lamp signals, wherein the indicator lamp 65 includes a first light emitting component and a second light emitting component capable of emitting different colors, for example: the first light-emitting component is a blue light-emitting component capable of emitting blue light, the second light-emitting component is a red light-emitting component capable of emitting red light, and the first light-emitting component and the second light-emitting component of different colors are not limited by the blue light-emitting component and the red light-emitting component. Under the control of the control unit 60 according to different states, the first light emitting component (blue light emitting component) and the second light emitting component (red light emitting component) of the indicator lamp 65 respectively emit light or are turned off. Furthermore, the driving module 3 may further include a sound generator 66, and the sound generator 66 may be a buzzer, etc., and is electrically connected to the control unit 60, so that the sound generator 66 can be controlled to generate indication sounds such as on, off, status, etc.

The medicine injection system of the present invention can also preset a glue film on the back of the shell 11 of the needle discharging mechanism 10, the back of the outer casing 40 of the medicine storage module 2, the back of the shell 50 of the driving module 3, and the like, and a release film on the outer surface of the glue film. When the drug injection system is used, the release film is firstly torn off, and after the release film is torn off, the adhesive film on the back of the drug injection system can be adhered to a human body so as to execute injection. Preferably, the adhesive film is an air-permeable adhesive film.

As shown in fig. 11 and fig. 20 to fig. 24, in the use situation of the drug injection system according to the present invention, the needle outlet mechanism 10 and the adapter mechanism 20 can be combined into the injection runner module 1 in advance, and connect the drug storage module 2 and the driving module 3, at this time, the contact end cap 113 protrudes outside the housing 11 due to the elastic force of the elastic component 114, and an air-permeable adhesive film with a release film on the surface is attached to the back of the drug injection system in advance, and after the drug injection system is sterilized, a sterilized container can be pre-installed and sealed with a sterilized film paper.

When in use, the sterilizing film paper on the accommodating box is torn, the medicine injection system is taken out, and whether the appearance of the medicine injection system is normal or not is confirmed by observing whether the contact end cover 113 is in a state of protruding out of the shell 11 or not and observing whether the release film is damaged or polluted or not, and the medicine injection system is reused when the appearance of the medicine injection system is confirmed to be normal.

On the other hand, the user must confirm whether or not the medicine is properly filled in the container body 31 of the medicine storage module 2 of the medicine injection system, and then perform injection after confirming that the medicine is properly filled. When the container body 31 of the drug storage module 2 is an empty container that is not previously filled with a drug solution, the drug solution after the confirmation is extracted by a syringe before injection, and the infusion end 3213 of the container connector 32 is pierced by the needle of the syringe, so that the drug solution in the syringe is injected into the container body 31 through the container connector 32, and then the injection operation is performed.

Next, as shown in fig. 15 to 17, before the injection operation, the insulating sheet 55 is removed, the power supply unit 53 of the driving module 3 is electrically connected to the control unit 60 by electrically contacting the electrical connector 54, and the switch 61 is switched to the on state, so that the indicator lamp 65 is turned on. And then, tearing off the release film on the back of the drug injection system, enabling the back of the drug injection system to face the part to be injected of the human body, enabling the contact end cover 113 to contact the part to be injected of the human body and apply pressure, enabling the contact end cover 113 to be pressed and compress the elastic component 114 to retract into the shell 11, and pasting the release film on the back of the drug injection system on the human body for positioning. As shown in fig. 25 to 27, when the contact end cap 113 is pressed and retracted to the end position of the moving stroke S in the housing 11, the unlocking pushing portion 1131 of the contact end cap 113 pushes the hook 1213 of the needle assembly 121 to disengage from the first locking hole 1111, so as to release the locked state of the needle assembly 121 at the start position of the operating stroke L, and at the same time, the contact end cap 113 pushes the abutment tab to trigger the confirm switch 63, and the confirm switch 63 sends a confirm signal to the control unit 60, so that the control unit 60 of the drug injection system is switched to the injection preparation state (i.e. standby state).

Then, the needle discharging assembly 121 is pressed, and in the process of the operation stroke L of the needle discharging assembly 121 being pressed, the driving tooth 1212 of the needle discharging assembly 121 drives the forward rotation rack section 12121 and the reverse rotation rack section 12122 of the gear 1221 of the rotating assembly 122 in sequence, so that the rotating assembly 122 is driven by the needle discharging assembly 121 to rotate forward and then reversely, and then the needle seat 124 connected with the puncture assembly 13 is driven by the rotating assembly 122 to generate descending and ascending actions, wherein the puncture assembly 13 combined by the pipe assembly 132 and the puncture needle 131 is driven to pass through the sealing part 1234 at the bottom of the needle seat plug 123 downwards to be in a needle discharging state and penetrate into a human body. Then, in the retracted state, the puncture needle 131 is lifted up together with the needle holder 124 to retract the puncture needle 131, and at this time, the tube assembly 132 is still left, and a part of the tube assembly 132 is positioned outside the housing 11 through the sealing part 1234, and the tube assembly 132 is kept penetrating into the human body.

At this time, as shown in fig. 25 to 27 and 22, the hook 1213 of the needle outlet assembly 121 moving to the end position of the operation stroke L can be locked in the second locking hole 111 of the base 12, so that the needle outlet assembly 121 is locked in a locked state, and the user does not need to keep pressing the needle outlet assembly 121. On the other hand, when the needle outlet assembly 121 is pressed to the end position, the start switch 62 is triggered, and the infusion state is entered. The control unit 60, which is in an injection preparation state (i.e. a standby state), receives a signal sent by the start switch 62 to start the motor 70, and drives the piston rod 24 of the switching mechanism 20 to move at a predetermined speed via the transmission assembly 80, so as to extract the liquid medicine in the medicine storage module 2, transfer the liquid medicine to the liquid injection chamber 1232 of the needle seat plug 123 through the switching mechanism 20, and inject the liquid medicine into the human body through the pipe assembly 132 from the liquid injection chamber 1232. The driving element 83 connected to the piston rod 24 can trigger the counting element 64 every time an injection pushing action is performed, and the control unit 60 determines the timing of stopping the motor 70 according to the injection signal sent by the receiving counting element 64, wherein when the control unit 60 receives the injection signal generated by triggering the counting element 64, the control unit 60 can start timing, and after a predetermined number of seconds, the driving assembly 80 is further caused to drive the piston rod 24 of the adapting mechanism 20 to perform the next injection stroke movement.

As shown in fig. 11 and fig. 20 to 24, in the above, when the piston rod 24 is driven by the driving module 3 to move backward, the piston chamber 230 in the piston cylinder 23 is in a negative pressure state, the one-way output valve portion 222 of the flow passage switching valve 22 of the switching mechanism 20 is in a closed state, and the one-way input valve portion 221 is in an open state, so that the liquid medicine in the medicine storage module 2 enters the piston chamber 230 through the container connector 32, the liquid medicine input flow passage 211 of the switching mechanism 20 and the one-way input valve portion 221; when the piston rod 24 is driven to move forward by the driving module 3, the liquid medicine in the piston chamber 230 is pushed by the piston rod 24 to be in a positive pressure state, the one-way output valve part 222 of the flow passage switching valve 22 of the switching mechanism 20 is in an open state, the one-way input valve part 221 is in a closed state, the liquid medicine in the piston chamber 230 enters the liquid injection chamber 1232 of the needle seat plug 123 of the needle outlet mechanism 10 through the liquid medicine output flow passage 212 and the one-way output valve part 222 of the switching mechanism 20, and then is injected into a human body through the pipeline assembly 132 by the liquid injection chamber 1232.

As shown in fig. 11 and fig. 20 to 24, after the control unit 60 determines that the target total infusion amount of the medicine is reached according to the number of times of the injection signal sent by the counting element 64, the motor 70 is stopped, and the injection operation is ended. The user can take down the drug injection system, wherein the contact end cover 113 protrudes out of the housing 11 by the elastic force of the elastic component 114 and is separated from the confirmation switch 63, so that the confirmation switch 63 sends a signal to the control unit 60 to switch to an idle state, and the pipe component 132 is positioned inside the contact end cover 113 protruding out of the housing 11, and the use safety is ensured by wrapping the pipe component 132 by the contact end cover 113.

In addition, the control unit 60 of the drug injection system can also provide a warning function and a safety mechanism of light and sound through a built-in control program, in combination with a confirmation switch 63, an indicator 65 and a sound generator 66, which comprise a first light emitting component (such as a blue light emitting component) and a second light emitting component (such as a red light emitting component) of different colors, and the like, which are described in detail below.

In order to indicate the usage status and the warning purpose of the drug injection system, the indicator lamp 65 is controlled by the control unit 60, and the indicator lamp 65 can enable the first light emitting component (such as the blue light emitting component) and the second light emitting component (such as the red light emitting component) to emit different colors to emit light or to extinguish respectively according to different states.

When the insulating sheet 55 is pulled up, the electric power supply unit 53 drives the control unit 60 of the module 3 via the electric connector 54 to supply power, if the control unit 60 determines that the electric power of the electric power supply unit 53 is greater than a preset value or ratio, an idle state is normally entered, the first light emitting element (blue light emitting element) and the second light emitting element (red light emitting element) of the indicator lamp 65 are controlled to be lighted, and the sound generator 66 is controlled to emit a prompt sound, after which the second light emitting element (red light emitting element) is controlled to be turned off, and the first light emitting element (blue light emitting element) is kept lighted. If the control unit 60 determines that the electric power of the electric power supply unit 53 is smaller than a preset value or proportion, for example, the electric power is smaller than 25% of the original stored electric power, the second light emitting component (red light emitting component) of the indicator lamp 65 is controlled to be turned on and enters the blinking cycle, the sound generator 66 is controlled to emit the warning sound, and then the second light emitting component (red light emitting component) is controlled to be turned off, so that the drug injection system is automatically turned off and locked due to insufficient electric power of the electric power supply unit 53 and cannot be used any more to maintain the safety.

When the drug injection system is attached to a human body, the contact end cap 113 pushes the contact piece 56 to trigger the confirm switch 63, and the confirm switch 63 sends a confirm signal to the control unit 60, so that the control unit 60 of the drug injection system is switched to an injection preparation state (i.e. a standby state). In the standby state, if the attaching state is loosened, the contact end cover 113 cannot maintain to touch the confirmation switch 63, and returns to the idle state under the control of the control unit 60. If the user resumes the attachment within a specified time (e.g., 10 seconds) for the contact end cap 113 to return to the activated confirmation switch 63, the standby state can be resumed. If the specific time is exceeded, the contact end cap 113 cannot be returned to touch the confirmation switch 63, and the drug injection system is automatically shut down and locked under the control of the control unit 60.

When the drug injection system is properly attached to the human body, the start switch 62 is triggered to enter the infusion state when the needle outlet assembly 121 is pressed to the end position. In the infusion state, if the attached state is loosened, and the contact end cover 113 cannot be kept in touch with the confirmation switch 63, the second light emitting component (red light emitting component) of the indicator lamp 65 is turned on under the control of the control unit 60, and the sound generator 66 is made to emit a warning sound. If the user can reattach the cap 113 to activate the confirmation switch 63 within a certain period of time (e.g., 5 seconds), the infusion state can be restored to continue. If the specific time is exceeded, the contact end cap 113 cannot be returned to touch the confirmation switch 63, and the drug injection system is automatically turned off and locked under the control of the control unit 60, so that the drug injection system cannot be used again to maintain the safety.

When the infusion is normally completed, the drug injection system enters an idle state, and under the control of the control unit 60, the first light emitting element (blue light emitting element) of the indicator lamp 65 is turned on for a certain time and then turned off, and the drug injection system is locked.

Through the above, the control unit 60 of the drug injection system of the present invention combines the systematic combination of the confirmation switch 63, the indicator light 65, the sound generator 66, etc. through the built-in control program, and can provide the warning function and the safety mechanism of light and sound during the use of the drug injection system, so as to ensure the use safety of the drug injection system of the present invention.

The present invention is not limited to the above-mentioned embodiments, but is capable of modification and variation in all embodiments without departing from the spirit and scope of the present invention.

Claims

1. A needle ejection mechanism, comprising:

A housing;

The puncture assembly is arranged in the shell and comprises a puncture needle and a pipeline assembly, the puncture needle puncture assembly is connected with the needle seat, the pipeline assembly can be combined with the puncture needle, the puncture assembly after the pipeline assembly is combined with the puncture needle is driven by the needle outlet operation assembly in a needle outlet state, the puncture assembly at least partially penetrates out of the shell, and in a needle retraction state, the puncture needle moves along with the needle seat to retract the puncture needle.

2. The needle discharging mechanism according to claim 1, wherein the needle discharging assembly is assembled in the housing in a linearly movable manner, and the rotating assembly is installed in the housing in a manner that the needle discharging assembly can be driven to rotate forward and backward.

3. The needle delivery mechanism of claim 1, wherein the needle delivery assembly further comprises a hub plug mounted to the housing, the needle extends into the hub plug, the tubing assembly is disposed within the hub plug and is disposed around the needle, the hub is driven by the rotating assembly to move between the rotating assembly and the hub plug.

4. A needle outlet mechanism according to claim 3, wherein the needle holder plug has a receiving chamber, a liquid injection chamber at a lower end of the receiving chamber, a connecting port at one side of the liquid injection chamber and communicating with the liquid injection chamber, and a sealing part at a lower end of the liquid injection chamber and exposed at a back surface of the housing, in the needle outlet state, the puncture assembly penetrates out of the sealing part at a bottom of the needle holder plug, and in the needle retraction state, a part of the pipe assembly penetrates out of the sealing part.

5. The needle discharging mechanism according to claim 1, wherein the rotating assembly is provided with a screw hole, the needle seat is provided with a screw connection part and is screwed in the screw hole of the rotating assembly, the upper end of the rotating assembly is provided with a gear part, the needle discharging assembly is provided with a long rail groove and a driving tooth part positioned in the long rail groove, the length of the long rail groove is set as an operation stroke, the driving tooth part comprises a forward rotation rack section and a reverse rotation rack section, the forward rotation rack section and the reverse rotation rack section are respectively positioned at two different sections in the axial direction of the long rail groove and at two different sides, the gear part of the rotating assembly is positioned in the long rail groove, and along with the movement of the needle discharging assembly in the operation stroke, the gear part of the rotating assembly can be respectively meshed with one of the forward rotation rack section and the reverse rotation rack section, so that the rotating assembly can be driven by the needle discharging assembly to rotate forward and reversely.

6. The needle discharging mechanism according to any one of claims 1 to 5, wherein the housing comprises a base and a housing sleeved outside the base, a contact end cover capable of moving in a movable stroke is mounted on a back side of the housing, and an elastic component is arranged between the housing and the contact end cover;

the needle outlet component is arranged in the base and can move at the distance of an operation stroke, the needle outlet component can be respectively buckled in the base at the starting point position and the end point position of the operation stroke to be in a locking state, the elastic force of the elastic component acts on the contact end cover to enable a part of the contact end cover to protrude out of the back side of the shell, and the contact end cover can be forced into the shell to release the locking state of the needle outlet component at the starting point position of the operation stroke.

7. The needle discharging mechanism according to claim 6, wherein the base has a first fastening hole at a start position of the operation stroke and a second fastening hole at an end position of the operation stroke, the rear end of the needle discharging component has a fastening hook, the fastening hook can be selectively fastened in the first fastening hole or the second fastening hole, the contact end cover has an unlocking pushing portion, the contact end cover is forced into the housing, and the unlocking pushing portion can push the fastening hook of the needle discharging component to push away from the first fastening hole, so that the locked state of the needle discharging component is released.

8. An injection runner module, comprising:

a needle ejection mechanism according to any one of claims 1 to 5; and

9. The injection runner module according to claim 8, wherein the runner switching valve comprises a unidirectional input valve portion and a unidirectional output valve portion, two ends of the piston cylinder are respectively a connection end and a cylinder end, the connection end is connected with the runner switching valve, the cylinder end extends out of the adapter, the piston cylinder is internally provided with a piston chamber, the connection end is provided with a liquid medicine inlet and a liquid medicine outlet which are communicated with the piston chamber, the liquid medicine inlet is connected with the unidirectional input valve portion, the liquid medicine outlet is connected with the unidirectional output valve portion, the piston rod can be driven in the piston chamber to linearly move, and can extract a liquid medicine to be unidirectionally input into the piston chamber through the liquid medicine input runner and the unidirectional input valve portion, and the liquid medicine is unidirectionally output from the piston chamber to the liquid medicine output runner through the unidirectional output valve portion.

10. A drug injection system, comprising:

An injection runner module, it includes a needle-out mechanism according to any one of claims 1-5, and a switching mechanism, wherein, the switching mechanism is installed on one side of the needle-out mechanism, the switching mechanism includes a adapter seat, a runner switching valve, a piston cylinder and a piston rod, the adapter seat is assembled in the needle-out mechanism, the runner switching valve and the piston cylinder are all disposed in the adapter seat, the adapter seat has a liquid medicine input runner and a liquid medicine output runner which are communicated with the piston cylinder, the runner switching valve is communicated with the puncture assembly of the needle-out mechanism through the liquid medicine output runner of the adapter seat, the piston rod can be assembled in the piston cylinder in a straight line motion;

11. The drug injection system of claim 10, wherein the container connector comprises a connector body comprising a container connection end, an infusion connection end and an infusion end, the infusion flow path extends from the container connection end to the infusion connection end, the container connection end is connected with the container body, the infusion connection end is connected with the drug solution input flow path of the switching mechanism, the infusion end is provided with an infusion branch channel communicated with the infusion flow path, and an infusion plug is arranged in the infusion branch channel to seal the infusion branch channel, the infusion plug is provided with a plug end exposed on the outer side of the connector body, and the plug end is exposed on the back surface of the outer sleeve.

12. The system of claim 10, wherein the housing of the needle ejection mechanism comprises a base and a housing sleeved outside the base, a contact end cap capable of moving in a movable stroke is mounted on the back side of the housing, and an elastic component is arranged between the housing and the contact end cap; the needle outlet component is arranged in the base and can move at the distance of an operation stroke, the needle outlet component can be respectively buckled in the base at the starting point position and the end point position of the operation stroke to be in a locking state, the elastic force of the elastic component acts on the contact end cover to enable a part of the contact end cover to protrude out of the back side of the shell, and the contact end cover can be forced into the shell to release the locking state of the needle outlet component at the starting point position of the operation stroke;

13. The drug injection system of claim 12, wherein the housing comprises a housing body and a housing cover mounted on the housing body, wherein an electric power supply unit and two electric connectors can be mounted in the housing, the electric power supply unit can be electrically connected to the control unit through the two electric connectors, an insulating sheet is arranged between one end of the electric power supply unit and the electric connector corresponding to the position for insulation and isolation, and the insulating sheet extends out of the housing.

14. The system of claim 12, wherein the driving module comprises a start switch, a confirm switch and a counting element, wherein the start switch, the confirm switch and the counting element are all electrically connected with the control unit, the start switch is arranged in the casing and is positioned at the end position of the operation stroke of the needle outlet assembly, and the start switch can be triggered when the needle outlet assembly is pressed to move to the end position;