CN112451804A - Drug delivery device for minimally invasive intervention - Google Patents

Abstract

The invention provides a minimally invasive intervention type drug delivery device, which comprises an outer sleeve, wherein an inner tube is arranged inside the outer sleeve, a heating sheet is embedded in the wall of the inner tube, and the bottom of the inner tube is communicated with a puncture needle; the bottom surface of the push handle is symmetrically provided with two grooves, the output end of the cylinder is fixedly provided with a push plate, the first switch of the heating sheet is in signal connection with the heating sheet, and the second switch of the heating sheet is in signal connection with the heating sheet; the protective cap is provided with a placing groove, one side of the inner annular part close to the placing groove is embedded with an annular disinfection lamp, and the bottom of the mounting groove is respectively and fixedly provided with an annular disinfection lamp switch and an air cylinder switch. The invention provides a minimally invasive intervention type drug delivery device which can disinfect puncture needles, heat liquid medicine and early warn different injection doses, has concentrated functions, strong linkage between operations and high automation degree, can effectively simplify manual operation and is very worthy of popularization.

Description

Drug delivery device for minimally invasive intervention

Technical Field

The invention relates to the technical field of medical equipment, in particular to a minimally invasive intervention type drug delivery device.

Background

In the prior art, a minimally invasive intervention type drug delivery device with application number "201810124969.8" structurally comprises a drug delivery device, wherein a moving wheel is arranged at the bottom of the drug delivery device, a push rod and a drug tube are arranged on the right side of the top of the drug delivery device, a push plate is arranged inside the drug tube, and a power output end of the push rod penetrates through the drug tube to be connected with the left side surface of the push plate; the front surface of the medicine feeding device is provided with the storage bin and the control panel, the inside of the storage bin is divided and provided with the drawers through the partition plates, the drawers are provided with two drawers, the sterilizing lamp and the refrigerator can provide sterilizing and refrigerating functions in the storage bin, used equipment for medicine feeding is placed in the storage bin, infection caused when waiting for an operation can be avoided, the push rod is controlled by the foot switch, the medicine feeding device is more convenient to use, the camera is arranged at the opening of the guide pipe, observation can be carried out through the camera, and long-time irradiation of X rays is avoided.

However, the method still has the obvious defects in the using process: 1. the device occupies a large area and is inconvenient to carry and use; 2. the interventional drug delivery device usually comprises a puncture needle, the puncture needle must be strictly disinfected before puncturing the skin of a patient, otherwise, potential safety hazards exist due to bacteria carried in the skin, and related structures such as a catheter and the like in the device are placed in a storage bin provided with a sterilizing lamp, so that on one hand, the contact surface of the catheter and a drawer is difficult to effectively sterilize by illumination, a cleaning dead angle exists, and on the other hand, the sterilizing lamp is still in a normally open state after the catheter is taken out, thereby not only causing waste of power resources, but also influencing the service life of the sterilizing lamp; 3. in cold weather or when the temperature difference is large, if the cool liquid medicine is directly applied to the patient in an interventional mode, the discomfort of the patient can be caused, stress reaction can also exist, and the device cannot effectively solve the problem, so that the function of the device is very limited; 4. in the process of interventional administration, medical personnel need observe the dial gauge on the injector all the time to this dose of infusing into the patient body is controlled, and this kind of mode has invisibly increased medical personnel's working strength, if do not in time stop and continue to inject moreover, can have great risk, and this drawback can not avoided effectively to above-mentioned device yet.

Disclosure of Invention

It is an object of the present invention to provide a drug delivery device for minimally invasive intervention that solves the problems set forth in the background above.

In order to achieve the purpose, the invention provides the following technical scheme:

a drug delivery device for minimally invasive intervention comprises an outer sleeve, wherein an inner tube is arranged inside the outer sleeve, a clamping ring is arranged on the outer side of one end of the inner tube, a heating sheet is embedded in the tube wall of the inner tube, a liquid feeding channel is communicated with the side surface of the inner tube, a one-way valve is arranged in the liquid feeding channel, a puncture needle is communicated with the bottom of the inner tube, a piston plate is movably arranged in the tube cavity of the inner tube, a push rod is fixedly arranged on one side, away from the puncture needle, of the piston plate, and the push rod is fixed to the bottom of a push handle;

the top surface of the push handle is embedded with a control panel and a warning light, the bottom surface of the push handle is embedded with a PLC controller and an infrared distance measuring transmitter, the position of the position ring relative to the infrared distance measuring transmitter is embedded with an infrared distance measuring receiver, the bottom surface of the push handle is symmetrically provided with two grooves, the top parts of the grooves are fixedly provided with air cylinders, the output end of the air cylinder is fixedly provided with a push plate, one side of the push plate close to the air cylinder is fixedly provided with a trigger block, a bearing plate is arranged above the trigger block and is fixed in the groove, one side of the bearing plate close to the push plate is fixedly provided with a first switch of a heating plate, the first switch of the heating plate is in signal connection with the heating plate, the bottom of the push handle is fixedly provided with a clamping ring, and the clamping ring is arranged between the infrared distance, the clamping ring is fixedly provided with a clamping protrusion, a clamping groove is formed in the position, opposite to the clamping ring, of the clamping ring, a clamping protrusion is fixedly arranged on the side wall of the clamping groove, a second heating plate switch is fixedly arranged at the bottom of the clamping groove, and the second heating plate switch is in signal connection with the heating plates;

still including the helmet, integrated into one piece is provided with interior annular portion and outer annular portion on the helmet, the standing groove has been seted up in the helmet, the embedded annular sterilamp that is provided with in one side that interior annular portion is close to the standing groove, the embedded battery that is provided with in bottom of helmet, the battery passes through electric wire electric connection in annular sterilamp, the top connection of outer annular portion is provided with elasticity rubber band, the mounting groove has been seted up between interior annular portion and the outer annular portion to the helmet, the outer tube can be pegged graft and is established in the mounting groove, the bottom of mounting groove is fixed annular sterilamp switch and the cylinder switch of being provided with respectively, annular sterilamp switch and annular sterilamp signal connection, cylinder switch and cylinder signal connection.

Preferably, the inner tube is fixedly arranged inside the outer sleeve.

Preferably, the inner tube is movably arranged inside the outer sleeve.

Preferably, the inner pipe and the clamping ring are integrally formed.

Preferably, a micro temperature sensor is embedded in the pipe wall of the inner pipe.

Preferably, a micro valve is arranged in the puncture needle.

Preferably, the side of the pushing plate, which is far away from the air cylinder, is provided with anti-skid particles.

Preferably, the storage battery is provided with a charging interface, and the charging interface protrudes out of the protective cap.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has the advantages of more simplified integral structure, more centralized functions, convenient carrying, transferring and use, higher automation degree, effective reduction of manual operation and convenient use;

2. the annular disinfection lamp is arranged in the protective cap, when the protective cap is arranged on the outer sleeve through the elastic rubber band hoop, the annular disinfection lamp switch and the cylinder switch can be triggered by the pressing of the outer sleeve, the annular disinfection lamp is started by the annular disinfection lamp switch to irradiate and disinfect the puncture needle, and effective sterilization is realized;

3. according to the invention, the heating sheet is embedded in the pipe wall of the inner pipe, after the inner pipe absorbs the liquid medicine, the piston plate can drive the push handle to move upwards through the push rod, so that the clamping ring clamped and embedded in the clamping groove in the initial state is jacked upwards, the second switch of the heating sheet loses the abutting pressure, the heating sheet is started to heat the liquid medicine, and in the process of continuous administration, the heating sheet can maintain the liquid medicine in a preset temperature range, so that the discomfort of a patient is relieved, and the rehabilitation of the patient is promoted;

4. according to the infrared distance measuring transmitter and the infrared distance measuring receiver, the pushing amplitude of the piston plate can be obtained through distance measurement, the amount of the injected liquid medicine can be indirectly obtained, the pushing amplitude can be set through the control panel in advance, when the distance detected by the infrared distance measuring transmitter and the infrared distance measuring receiver is within a preset range, the PLC controls the air cylinder to be automatically started, the pushing plate is pushed outwards, the fingers of a user can feel the pushing force, the injection is immediately stopped, the excessive medicine administration is avoided, meanwhile, the pushing plate can drive the trigger block to be far away from the first switch of the heating plate, the heating plate is closed, and useless power consumption is reduced.

The invention provides a minimally invasive intervention type drug delivery device which can disinfect a puncture needle, heat liquid medicine and early warn different injection doses, has a simple structure, concentrated functions, strong linkage among operations, high automation degree, capability of effectively simplifying manual operation, more convenience for use and great popularization value.

Drawings

FIG. 1 is a cross-sectional view of an outer tube and its inner structure according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the invention at B in FIG. 1;

FIG. 4 is a cross-sectional view of the protective cap and its internal structure of the present invention;

fig. 5 is a schematic view of the overall structure assembly state of the present invention.

In the figure: the device comprises an outer sleeve, an inner tube, a 201 clamping ring, a 3 heating piece, a 4 micro temperature sensor, a 5 liquid adding channel, a 6 one-way valve, a 7 puncture needle, a 8 micro valve, a 9 piston plate, a 10 push rod, a 11 push handle, a 12 control panel, a 13 warning lamp, a 14PLC (programmable logic controller), a 15 infrared distance measuring transmitter, a 16 infrared distance measuring receiver, a 17 groove, an 18 cylinder, a 19 push plate, 191 anti-skid particles, a 20 trigger block, a 21 bearing plate, a 22 heating piece first switch, a 23 clamping ring, a 24 clamping bulge, a 25 clamping groove, a 26 clamping bulge, a 27 heating piece second switch, a 28 protective cap, a 281 inner ring part, a 282 outer ring part, a 29 placing groove, a 30 ring-shaped disinfection lamp, a 31 storage battery, a 311 charging interface, 32 electric wires, 33 elastic rubber bands, 34 installing grooves, a 35 ring-shaped disinfection lamp switch and a 36 cylinder switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 5, the present invention provides a technical solution:

a drug delivery device for minimally invasive intervention comprises an outer sleeve 1, an inner tube 2 is arranged inside the outer sleeve 1, a clamping ring 201 is arranged on the outer side of one end of the inner tube 2, a heating sheet 3 is embedded in the tube wall of the inner tube 2, heat generated by the heating sheet 3 can be transmitted to drug liquid through the tube wall of the inner tube 2, and then the drug liquid is heated, discomfort of a patient caused by direct injection of cold drug liquid in cold weather is avoided, the drug delivery device is more humanized, the heating sheet 3 can be controlled by a first heating sheet switch 22 and a second heating sheet switch 27 or can be directly controlled by a control panel 12, a liquid adding channel 5 is communicated with the side surface of the inner tube 2, the drug liquid can be injected into the tube cavity of the inner tube 2 through the liquid adding channel 5, a one-way valve 6 is arranged in the liquid adding channel 5, the setting of the one-way valve 6 enables the drug liquid to enter the inner cavity of the inner tube, and can not flow against the current, and then avoid the liquid medicine to leak, the bottom intercommunication of inner tube 2 is provided with pjncture needle 7, pjncture needle 7 bottom is the sharp needle form, can puncture patient's skin, carry out intervention formula and administer, the activity is provided with piston plate 9 in the lumen of inner tube 2, piston plate 9 can reciprocate in the lumen of inner tube 2, piston plate 9 keeps away from one side of pjncture needle 7 and fixedly is provided with push rod 10, push rod 10 is fixed in the bottom that pushes away handle 11, when infusing the liquid medicine, the user can place the thumb in the upside that pushes away handle 11, forefinger and middle finger place in the one side that pushes away handle 11 bottom, ring finger and little finger place in the opposite side that pushes away handle 11 bottom, move the operation through.

The top surface of the push handle 11 is embedded with a control panel 12 and a warning light 13, the control panel 12 can be used for setting an early warning range of distance measurement values of an infrared distance measurement emitter 15 and an infrared distance measurement receiver 16, so as to indirectly control the injected dosage of the liquid medicine in the inner tube 2, when the warning light 13 is on, the warning value is reached at this time, a user is reminded to stop injecting immediately, the bottom surface of the push handle 11 is embedded with a PLC (programmable logic controller) 14 and the infrared distance measurement emitter 15, the PLC 14 can carry out parameter setting and control on the starting working conditions of all the electric elements related to the invention, the infrared distance measurement receiver 16 is embedded in the position of the clamping ring 201 opposite to the infrared distance measurement emitter 15, and in view of the fact that the infrared distance measurement emitter 15 and the infrared distance measurement receiver 16 are common electric elements, no further description is given, the bottom surface of the push handle, the top of the groove 17 is fixedly provided with the air cylinder 18, the output end of the air cylinder 18 is fixedly provided with the pushing plate 19, one side of one pushing plate 19 close to the air cylinder 18 is fixedly provided with the trigger block 20, the upper part of the trigger block 20 is provided with the bearing plate 21, the bearing plate 21 is fixed in the groove 17, one side of the bearing plate 21 close to the pushing plate 19 is fixedly provided with the heating plate first switch 22, the heating plate first switch 22 is in signal connection with the heating plate 3, when the trigger block 20 is far away from the heating plate first switch 22, the heating plate 3 is closed, which indicates that the medicine injection is completed at the moment, the bottom of the push handle 11 is fixedly provided with the clamping ring 23, the clamping ring 23 is arranged between the infrared distance measuring emitter 15 and the groove 17, the advantage of the arrangement is that the clamping ring 23 plays a blocking role, the infrared distance measuring emitter 15 can be prevented from being blocked when a user holds the push handle 11, and the infrared distance measuring receiver, fixed inlay card protruding 24 that is provided with on the inlay card ring 23, buckle groove 25 has been seted up to the position department of inlay card ring 23 on the inlay card ring 201, the fixed buckle arch 26 that is provided with on the lateral wall of buckle groove 25, inlay card ring 23 can inlay the card in buckle groove 25, make inlay card protruding 24 receive the protruding 26 of buckle's blocking, avoid taking off, the fixed heating plate second switch 27 that is provided with in bottom of buckle groove 25, heating plate second switch 27 and 3 signal connection of heating plate, when heating plate second switch 27 is supported and pressed, heating plate 3 is in the off-state, the device at this moment is in the unused state that does not store the liquid medicine, consequently, close heating plate 3 and consume in order to reduce useless electric power.

The puncture needle protection device further comprises a protection cap 28, an inner annular part 281 and an outer annular part 282 are integrally formed on the protection cap 28, a placement groove 29 is formed in the protection cap 28, the puncture needle 7 can be placed in the placement groove 29, an annular disinfection lamp 30 is embedded in one side, close to the placement groove 29, of the inner annular part 281, the annular disinfection lamp 30 is annular and used for carrying out comprehensive dead-angle-free sterilization and disinfection on the puncture needle 7, a storage battery 31 is embedded in the bottom of the protection cap 28, the storage battery 31 is electrically connected to the annular disinfection lamp 30 through an electric wire 32, therefore, the storage battery 31 can supply power to the annular disinfection lamp 30, the trouble of power plug-in use is avoided, an elastic rubber band 33 is connected to the top of the outer annular part 282, the protection cap 28 can be hooped on the outer sleeve 1 through the elastic rubber band 33 during use, a mounting groove 34 is formed between the inner annular part 281 and the outer annular part 282 of, the bottom of mounting groove 34 is fixed with annular sterilamp switch 35 and cylinder switch 36 respectively, annular sterilamp switch 35 and annular sterilamp 30 signal connection, cylinder switch 36 and cylinder 18 signal connection, when annular sterilamp switch 35 received outer tube 1 to support and press, annular sterilamp 30 opened, disinfect puncture needle 7, when cylinder 18 received outer tube 1 to support and press, cylinder 18 contracts back to initial condition, if cylinder 18 itself just is in initial condition then no longer moves, and then ensure that cylinder 18 drives push plate 19 and resets, push plate 19 and push handle 11 bottom surface at this moment are equal mutually, use and feel more comfortable.

Preferably, the inner tube 2 is fixedly arranged inside the outer cannula 1, so that the inner tube 2 can drive the outer cannula 1 to move, and is suitable for an intervention situation in which the puncture needle 7 is firstly used for puncturing the skin of a patient and then is jointly led into the outer cannula 1.

Preferably, the inner tube 2 is movably disposed inside the outer cannula 1, and is mainly suitable for an interventional situation in which the outer cannula 1 is first introduced into an opened cavity and then a puncture needle 7 is used to puncture a specific portion inside.

Preferably, the inner tube 2 and the retaining ring 201 are integrally formed, so that the whole body is firmer.

Preferably, a micro temperature sensor 4 is embedded in the wall of the inner tube 2, and the micro temperature sensor 4 can detect the temperature of the liquid medicine in the inner tube 2 and display the temperature in real time through a display screen on the control panel 12.

Preferably, a micro valve 8 is arranged in the puncture needle 7, and the micro valve 8 is used for controlling the communication of the puncture needle 7.

Preferably, the side of the pushing plate 19 away from the cylinder 18 is provided with the anti-slip particles 191, and the arrangement of the anti-slip particles 191 improves the anti-slip function, so as to avoid hand-held slip.

Preferably, the battery 31 is provided with a charging interface 311, the charging interface 311 is provided to protrude from the helmet 28, and the battery 31 can be charged through the charging interface 311.

The working principle is as follows: in an unused initial state, the outer sleeve 1 can be clamped and embedded in the mounting groove 34 of the protective cap 28 and hooped on the surface of the outer sleeve 1 through the elastic rubber band 33, at this time, the outer sleeve 1 presses against the annular sterilizing lamp switch 35 and the cylinder switch 36 in the mounting groove 34, the annular sterilizing lamp 30 is turned on to sterilize and disinfect the puncture needle 7 completely without dead angles, the cylinder 18 retracts to an initial state, if the cylinder 18 is in the initial state, the cylinder 18 does not move any more, so that the cylinder 18 drives the push plate 19 to reset, the reset push plate 19 and the push handle 11 are level in bottom, the hand feeling is more comfortable, it needs to be noted that the push handle 11 is tightly attached to the clamping ring 201 of the inner tube 2 at this time, the clamping ring 23 is clamped and embedded in the clamping groove 25, the clamping protrusion 24 is blocked by the limit of the clamping protrusion 26, and the second switch 27 of the heating sheet is triggered at this time, the heater chip 3 is in the off state, reducing useless power consumption.

When drawing the liquid medicine, can close micro valve 8 earlier, then communicate external pipe or liquid medicine case in liquid feeding passageway 5, through pushing away handle 11 and upwards pulling piston plate 9 for the liquid medicine is inhaled to the lumen of inner tube 2 in, push away handle 11 this moment and keep away from screens ring 201, heating plate second switch 27 loses and triggers, heating plate 3 is automatic start then, heat the liquid medicine in the lumen of inner tube 2, avoid ice-cold liquid medicine to directly carry out the intervention formula and give medicine the back and cause patient's discomfort.

Before injection, the control panel 12 can be used for setting an early warning range for distance measurement values of the infrared distance measurement emitter 15 and the infrared distance measurement receiver 16, so that the injected dosage of the liquid medicine in the inner tube 2 is indirectly controlled, during injection, the micro valve 8 is firstly opened, the operation can be controlled through the control panel 12, then the liquid medicine is gradually injected into a wound of a patient along with the gradual increase of the range of the push handle 11, the distance between the infrared distance measurement emitter 15 and the infrared distance measurement receiver 16 is also gradually reduced, until the distance is reduced to the early warning value, the PLC 14 controls the warning lamp 13 to start to remind the user, the PLC 14 controls the cylinder 18 to extend outwards, the cylinder 18 drives the push plate 19 to move downwards to touch the fingers of the user, the fingers of the user are pushed outwards to be far away from the push handle 11, the injection is stopped through physical means, and the injection overdose is avoided, more safely, meanwhile, the pushing plate 19 drives the trigger block 20 to move, so that the first switch 22 of the heating sheet is not triggered, the heating sheet 3 is closed, the medicine injection is completed at the moment, useless power consumption is avoided, and it is noted that the heating sheet 3 can be directly controlled to be started or closed through the control panel 12, a control mode can be selected according to actual conditions, and the application situation is more.

The device has the advantages of simple structure, centralized functions, more degree of automation, effective simplification of the operation of a user, and more convenience and high efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A drug delivery device for minimally invasive intervention, comprising an outer cannula (1), characterized in that: an inner tube (2) is arranged inside the outer sleeve (1), a clamping ring (201) is arranged on the outer side of one end of the inner tube (2), a heating plate (3) is embedded in the tube wall of the inner tube (2), a liquid feeding channel (5) is communicated with the side surface of the inner tube (2), a one-way valve (6) is arranged in the liquid feeding channel (5), a puncture needle (7) is communicated with the bottom of the inner tube (2), a piston plate (9) is movably arranged in a tube cavity of the inner tube (2), a push rod (10) is fixedly arranged on one side, away from the puncture needle (7), of the piston plate (9), and the push rod (10) is fixed to the bottom of a push handle (11);

a control panel (12) and a warning light (13) are embedded in the top surface of the push handle (11), a PLC (programmable logic controller) and an infrared distance measuring emitter (15) are embedded in the bottom surface of the push handle (11), an infrared distance measuring receiver (16) is embedded in the position, opposite to the infrared distance measuring emitter (15), of the clamp ring (201), two grooves (17) are symmetrically formed in the bottom surface of the push handle (11), air cylinders (18) are fixedly arranged at the tops of the grooves (17), a push plate (19) is fixedly arranged at the output end of each air cylinder (18), a trigger block (20) is fixedly arranged on one side, close to each air cylinder (18), of one push plate (19), a bearing plate (21) is arranged above each trigger block (20), the bearing plate (21) is fixed in each groove (17), a first heating sheet switch (22) is fixedly arranged on one side, close to each push plate (19), of the bearing plate (21), the heating plate first switch (22) is in signal connection with the heating plate (3), a clamping ring (23) is fixedly arranged at the bottom of the push handle (11), the clamping ring (23) is arranged between the infrared distance measuring emitter (15) and the groove (17), a clamping protrusion (24) is fixedly arranged on the clamping ring (23), a clamping groove (25) is formed in the position, opposite to the clamping ring (23), on the clamping ring (201), a clamping protrusion (26) is fixedly arranged on the side wall of the clamping groove (25), a heating plate second switch (27) is fixedly arranged at the bottom of the clamping groove (25), and the heating plate second switch (27) is in signal connection with the heating plate (3);

the novel protective cap is characterized by further comprising a protective cap (28), an inner annular part (281) and an outer annular part (282) are integrally formed on the protective cap (28), a placing groove (29) is formed in the protective cap (28), an annular disinfection lamp (30) is embedded in one side, close to the placing groove (29), of the inner annular part (281), a storage battery (31) is embedded in the bottom of the protective cap (28), the storage battery (31) is electrically connected to the annular disinfection lamp (30) through an electric wire (32), an elastic rubber band (33) is connected and arranged at the top of the outer annular part (282), a mounting groove (34) is formed between the inner annular part (281) and the outer annular part (282) of the protective cap (28), the outer sleeve (1) can be inserted into the mounting groove (34), an annular disinfection lamp switch (35) and a cylinder switch (36) are fixedly arranged at the bottom of the mounting groove (34) respectively, the annular sterilizing lamp switch (35) is in signal connection with the annular sterilizing lamp (30), and the air cylinder switch (36) is in signal connection with the air cylinder (18).

2. A drug delivery device for minimally invasive intervention according to claim 1, wherein: the inner pipe (2) is fixedly arranged inside the outer sleeve (1).

3. A drug delivery device for minimally invasive intervention according to claim 1, wherein: the inner pipe (2) is movably arranged inside the outer sleeve (1).

4. A drug delivery device for minimally invasive intervention according to claim 2 or 3, wherein: the inner pipe (2) and the clamping ring (201) are integrally formed.

5. A drug delivery device for minimally invasive intervention according to claim 2 or 3, wherein: a micro temperature sensor (4) is embedded in the pipe wall of the inner pipe (2).

6. A drug delivery device for minimally invasive intervention according to claim 2 or 3, wherein: a micro valve (8) is arranged in the puncture needle (7).

7. A drug delivery device for minimally invasive intervention according to claim 2 or 3, wherein: and anti-skid particles (191) are arranged on one side of the pushing plate (19) far away from the air cylinder (18).

8. A drug delivery device for minimally invasive intervention according to claim 2 or 3, wherein: the storage battery (31) is provided with a charging interface (311), and the charging interface (311) protrudes out of the protective cap (28).

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