CN120919463B - A convenient, modular, energy-storage-based automatic injection device for assembling pharmaceuticals and medical devices. - Google Patents
A convenient, modular, energy-storage-based automatic injection device for assembling pharmaceuticals and medical devices.Info
- Publication number
- CN120919463B CN120919463B CN202511479831.6A CN202511479831A CN120919463B CN 120919463 B CN120919463 B CN 120919463B CN 202511479831 A CN202511479831 A CN 202511479831A CN 120919463 B CN120919463 B CN 120919463B
- Authority
- CN
- China
- Prior art keywords
- medicine
- assembly
- energy storage
- medicine bottle
- hidden needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/206—With automatic needle insertion
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the field of injection devices, in particular to a split energy storage automatic injection device convenient for assembling a medicine instrument, which comprises a medicine bin assembly, an energy storage assembly and a medicine bottle, wherein a medicine bottle support in the medicine bin assembly is arranged in a medicine bin shell, the top end of the medicine bottle is inserted into the medicine bottle support, a hidden needle assembly is connected in the medicine bin shell in a sliding manner, a medicine feeding assembly in the energy storage assembly is clamped and arranged in the upper shell with an energy storage switch sleeve, the medicine bin assembly is connected with the energy storage assembly through a clamping assembly, when installation is completed, the output end of the medicine feeding assembly is abutted with a plunger of the medicine bottle, the hidden needle assembly is abutted with the energy storage switch sleeve, and before the hidden needle assembly is compressed, the hidden needle assembly shields a needle head and the energy storage switch sleeve limits liquid pushing operation of the medicine feeding assembly. The medicine bin assembly and the energy storage assembly are of split type structures, the assembly of the medicine bin assembly and the energy storage assembly can be completed in an instrument production factory in the earlier stage, and after the medicine bottle assembly is completed in the medicine factory, the assembly of finished products is completed through the quick-insertion buckle, so that the final assembly process can be completed conveniently and rapidly.
Description
Technical Field
The invention relates to the technical field of injection devices, in particular to a split energy storage automatic injection device convenient for assembling of a medicine instrument.
Background
The disposable prefilled syringe medicine bottle is the most commonly used packaging medicine bag material in the field of medical syringes at present, and is generally applied to mechanical injection pens. In the application scene, for quick, high-efficient, stable injection, the mechanical, energy storage formula, automatic injection device of development can be high-efficient safe convenient completion self-administration injection.
However, the existing final device for the early assembly of the injection device and the medicament assembly is often completed in two different production lines, because the final medicament assembly is often performed in a pharmaceutical factory, and the early assembly is completed in an instrument production factory, the prior injection device and the medicament assembly have great challenges, and the convenience, the high efficiency and the success rate of the final medicament assembly in the pharmaceutical factory are required to be improved.
Therefore, there is a need for a split energy storage automatic injection device that facilitates the assembly of a pharmaceutical tool.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide a split energy storage automatic injection device convenient for assembling a medicine machine, which is convenient for assembling a medicine bottle and safely and conveniently completing self-administration injection by a user.
In order to achieve the above purpose, the invention provides a split energy storage automatic injection device convenient for assembling a medicine machine, which comprises a medicine bin assembly, an energy storage assembly and a medicine bottle;
The medicine bin assembly comprises a medicine bin shell, a hidden needle assembly and a medicine bottle support, wherein the medicine bottle support is arranged in the medicine bin shell, the top end of a medicine bottle is inserted into the medicine bottle support, the hidden needle assembly is connected in the medicine bin shell in a sliding manner, the energy storage assembly comprises an upper shell, an energy storage switch sleeve and a medicine feeding assembly, the medicine feeding assembly is connected with the energy storage switch sleeve in a clamping manner and is arranged in the upper shell, the top end of the medicine bottle is provided with a needle head, and the tail end of the medicine bottle is provided with a plunger;
the medicine bin assembly and the energy storage assembly are connected through the buckle assembly arranged on the outer wall of the medicine bin shell and the outer wall of the upper shell, after the medicine bin assembly and the energy storage assembly are installed, the output end of the medicine feeding assembly is in butt joint with the plunger at the tail end of the medicine bottle, the hidden needle assembly is in butt joint with the energy storage switch sleeve, before the hidden needle assembly is compressed, the hidden needle assembly shields the needle head, and the energy storage switch sleeve limits the medicine feeding assembly performs liquid pushing operation.
In the above-mentioned structure, medicine storehouse subassembly and energy storage subassembly are split type structure, and the medicine bottle is the part of last way equipment at medicine storehouse subassembly, the respective equipment of medicine storehouse subassembly, energy storage subassembly is accomplished at the apparatus manufacture factory in earlier stage, accomplish the medicine bottle assembly back at the medicine factory again, accomplish medicine storehouse subassembly and energy storage subassembly through the quick buckle that inserts that sets up on medicine storehouse subassembly accomplish with the lock of energy storage subassembly and accomplish final finished product equipment for last way equipment process can be convenient quick completion.
And the energy storage switch sleeve is driven to be separated from the drug delivery component when the hidden needle component is pushed to leak out of the needle head in the injection process, and the drug delivery component starts to move based on energy storage to push the plunger to complete automatic injection.
The medicine bin is characterized in that the buckling assembly comprises a buckling buckle and a buckling groove, a connecting arm is arranged on the medicine bin shell, the buckling buckle is arranged on the outer wall of the connecting arm, the outer wall of the upper shell is provided with the buckling groove matched with the buckling buckle, and the connecting arm stretches into the upper shell until the buckling buckle is in clamping connection with the buckling groove.
Through above-mentioned structure, realize the quick installation of medicine storehouse subassembly and energy storage subassembly after the installation medicine bottle.
The invention is further provided with the hidden needle assembly comprising a hidden needle sleeve and a limiting ring, wherein the hidden needle sleeve is connected between the medicine bottle support and the medicine bin shell in a sliding way, a placing groove is formed in the hidden needle sleeve, the limiting ring is arranged in the placing groove and can rotate along the circumferential direction of the placing groove and can not move along the axial direction of the placing groove;
The outer wall of the medicine bottle support is provided with a sliding track, the sliding track comprises a rising track and a falling track, the top ends of the rising track and the falling track are combined with a switching track, the sliding convex hull is connected in the rising track or the falling track in a sliding mode, and the sliding convex hull moves along the sliding track along with the compression or release of the hidden needle sleeve so as to realize the leakage or shielding of the needle head in the medicine bin assembly.
The hidden needle sleeve drives the sliding convex hull to move to the switching track along the ascending track when the hidden needle sleeve is compressed, the needle is leaked out to perform injection operation, and after injection is completed, the hidden needle sleeve resets and slides to the end part of the descending track from the switching track to realize locking, and at the moment, the needle is shielded in the hidden needle sleeve, so that the puncture-proof protection of the needle is realized through the structure.
The invention is further provided with a push rod at one end of the hidden needle sleeve, and the push rod of the hidden needle sleeve extends into the upper shell and is abutted with the energy storage switch sleeve;
the ejector rod protrudes out of the hidden needle sleeve in the radial direction, a hidden needle sleeve sliding rail is arranged on the inner wall of the medicine bin shell, a lower limiting surface is arranged below the hidden needle sleeve sliding rail, the ejector rod is arranged on the hidden needle sleeve sliding rail, and when the bottom of the ejector rod is in butt joint with the lower limiting surface, the hidden needle sleeve extends out of the medicine bin shell.
When in injection, the hidden needle sleeve is compressed to the inside of the split energy storage automatic injection device which is convenient for the assembly of the medicine instrument, and then the energy storage switch sleeve is driven to move, so that the energy storage switch sleeve is separated from the medicine feeding component. The hidden needle sleeve is limited to move only along the axial direction through the hidden needle sleeve sliding track, and the hidden needle sleeve is fixed through the lower limiting surface, so that the hidden needle sleeve wraps the needle head and is prevented from being separated from the device.
The invention further provides that the drug delivery component comprises a driving rod, a push rod and a torsion spring, wherein the driving rod is hollow, and the push rod is arranged in the driving rod and used as an output end of the drug delivery component;
The energy storage assembly further comprises a top cover, the top cover is connected with one end of the upper shell, and a torsion spring upper fixing groove and a driving rod upper inserting pin are formed in the top cover;
The upper end of the driving rod is connected with an insertion pin on the driving rod, the outer wall of the lower end of the driving rod is provided with a plurality of meshing teeth, and the inner wall of the energy storage switch sleeve is provided with a plurality of limit ribs;
Before the hidden needle sleeve is compressed, each limiting rib stretches into the space between two meshing teeth and is used for limiting the rotation of the driving rod, so that the torsion spring is limited to drive the push rod in the driving rod to rotate for liquid pushing operation.
The structure realizes energy storage through the torsion spring, the driving rod is clamped with the energy storage switch sleeve in an initial state, the rotation of the driving rod is limited through the limit rib of the energy storage switch sleeve, and then the torsion spring is limited to realize energy storage locking, and when the limit rib of the energy storage switch sleeve is separated from the meshing teeth on the driving rod, the driving rod rotates under the action of the torsion spring, and then the push rod in the driving rod is driven to rotate.
The energy storage switch sleeve further comprises a sliding arm, wherein a vertical limit sliding groove is formed in the inner wall of the upper shell, and the sliding arm is clamped with the limit sliding groove and moves along the limit sliding groove.
The rotary motion of the energy storage switch sleeve is limited by the vertical limiting sliding groove, so that the energy storage switch sleeve can only axially slide.
The invention is further arranged that the inner wall of the driving rod is provided with a meshing convex hull, and the outer wall of the push rod is provided with push rod threads and a meshing groove matched with the meshing convex hull;
The upper shell is far away from one end of top cap is provided with the fixed plate, be provided with the screw thread through-hole on the fixed plate, the one end of push rod is connected with the meshing convex closure in the actuating lever through the meshing recess, the other end pass the screw thread through-hole back with the plunger butt.
The push rod is in threaded connection with the fixed plate, and the driving rod drives the push rod to rotate under the action of the torsion spring, so that the push rod can axially move compared with the fixed plate, and the plunger is pushed to perform injection.
The invention is further characterized in that the fixed plate is provided with a plurality of sounding ribs along the circumferential direction, the bottom of the driving rod is provided with sounding poking sheets, and the sounding poking sheets are contacted with the sounding ribs.
In the rotation process of the driving rod, the sounding pulling piece rotates to impact the sounding rib, the sounding pulling piece elastically deforms and then impacts the rib uniformly distributed on the subsequent circumference again, so that a 'click' injection prompt tone and vibration feedback of the whole injection process are generated, the user is prompted to perform injection, and the injection is completed when the injection prompt tone and vibration feedback stop.
The invention is further characterized in that a first insertion groove is formed in the outer side of the fixing plate, and the connecting arm penetrates through the first insertion groove and stretches into the upper shell until the buckling buckle is buckled with the buckling groove.
The invention is further characterized in that a second insertion groove is further formed in the outer side of the fixing plate, and the ejector rod passes through the second insertion groove and then abuts against the energy storage switch sleeve.
The invention further provides that a pressure spring is arranged between the energy storage switch sleeve and the top cover.
The pressure spring is used for providing the reset power of the hidden needle assembly, when the hidden needle sleeve is compressed in contact with the skin, the energy storage switch sleeve compresses the pressure spring, and when the hidden needle sleeve is far away from the skin, the pressure spring resets to provide thrust, so that the energy storage switch sleeve is pushed to reset, and the hidden needle sleeve is synchronously pushed to reset.
The medicine bottle is characterized in that a medicine bottle support fixing groove is formed in the inner wall of the medicine bin shell, the medicine bottle support comprises a medicine bottle accommodating cavity, a support fixing buckle is arranged at the inlet of the medicine bottle accommodating cavity, the support fixing buckle is connected with the medicine bottle support fixing groove in a clamping mode, and the medicine bottle is arranged in the medicine bottle accommodating cavity.
The medicine bin is further provided with a first injection observation window, the hidden needle sleeve is provided with a second injection observation window, and the position of the second injection observation window corresponds to that of the first injection observation window.
The state of the medicine bottle in the medicine bin assembly can be directly observed through the first injection observation window and the second injection observation window.
The medicine bin is further characterized in that a buckling convex hull is further arranged on the outer wall of the medicine bin shell, which is far away from the end of the energy storage assembly, and the medicine bin assembly further comprises a mounting cap, and the buckling convex hull is clamped with the side wall of the safety cap.
When the buckling convex hull is clamped with the safety helmet, the mounting cap is sleeved on the outer side of the hidden needle sleeve extending out of the medicine bin shell, so that the hidden needle sleeve is prevented from being touched by mistake.
In summary, the technical scheme of the invention has the following beneficial effects:
1. The invention provides a split type energy storage automatic injection device, wherein a medicine bin assembly and an energy storage assembly are of split type structures, a medicine bottle is a part assembled at the tail of the medicine bin assembly, the respective assembly of the medicine bin assembly and the energy storage assembly is finished in an instrument production factory in the early stage, after the medicine bottle assembly is finished in the medicine factory, the medicine bin assembly and the energy storage assembly are finished through quick-inserting buckles arranged on the medicine bin assembly and the buckling of the energy storage assembly, so that the final assembly process can be finished conveniently and rapidly.
2. The hidden needle component is matched with the energy storage component, so that the hidden needle puncture-proof protection function is realized. After injection, the hidden needle sleeve moves along the descending track in the resetting process of the hidden needle sleeve, and is limited to move to the end part of the descending track, so that locking is realized, the medicine bin is effectively prevented from being used for the second time, the needle is prevented from being polluted, and puncture prevention protection is effectively carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of an embodiment of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a schematic view of the structure of a medicine bin shell;
FIG. 5 is a cross-sectional view of the cartridge housing;
FIG. 6 is a schematic view of a medicine bottle holder;
FIG. 7 is a schematic view of a hidden needle sheath;
FIG. 8 is a schematic diagram of a confinement ring configuration;
FIG. 9 is a cross-sectional view of the internal structure of the upper shell in two directions;
FIG. 10 is a top view of the upper shell;
FIG. 11 is a schematic view of a top cover structure;
FIG. 12 is a schematic view of a drive rod configuration;
FIG. 13 is a top view of the drive rod;
FIG. 14 is a schematic diagram of an energy storage switch sleeve;
FIG. 15 is a schematic illustration of a push rod configuration;
FIG. 16 is a schematic view of the structure in a compressed state of the hidden needle sheath;
FIG. 17 is a schematic view of the hidden needle hub in a compressed state and the injection completed configuration;
FIG. 18 is a sectional view showing a state after completion of injection and resetting of the hidden needle sheath;
FIG. 19 is a cross-sectional view of the sliding lobe position of the hidden needle hub in the pre-compression state;
FIG. 20 is a cross-sectional view of the sliding lobe position of the hidden needle hub in the compressed state;
fig. 21 is a cross-sectional view of the sliding lobe position of the hidden needle sheath in the post-reset state.
In the drawings, each reference numeral means:
1.2 parts of safety helmet, 2 parts of hidden needle sleeve, 2-1 parts of second injection observation window, 2-2 parts of placing groove, 2-3 parts of ejector rod;
3. 3-1 parts of limiting rings and sliding convex hulls;
4. the medicine bottle comprises a medicine bottle bracket, 4-1, an ascending track, 4-2, a descending track, 4-3, a bracket fixing buckle, 4-4 and a medicine bottle accommodating cavity;
5. 5-1 parts of medicine bin shells, 5-2 parts of buckling convex hulls, 5-3 parts of first injection observation windows, 5-3 parts of buckling buckles, 5-4 parts of medicine bottle support fixing grooves, 5-5 parts of hidden needle sleeve sliding rails, 5-6 parts of lower limiting surfaces;
6. 6-1 parts of upper shell, 6-2 parts of threaded through holes, 6-3 parts of sounding ribs, 6-3 parts of first insertion grooves, 6-4 parts of second insertion grooves, 6-5 parts of limit sliding grooves, 6-6 parts of buckling grooves, 6-7 parts of top cover buckling grooves, 6-8 parts of medicine bin insertion guide walls;
7. the top cover, 7-1, the upper fixed slot of torsion spring, 7-2, the top cover buckling buckle, 7-3, insert the pin on the driving rod, 7-4, the upper fixed end surface of the pressure spring;
8. The driving rod, 8-1, the meshing teeth, 8-2, the sounding plectrum, 8-3, the meshing convex hull, 8-4 and the torsion spring lower fixing groove;
9. 9-1 parts of energy storage switch sleeve, 9-2 parts of limit ribs and sliding arms;
10. The device comprises a push rod, a 10-1 part, a meshing groove, a 10-2 part, a push rod sleeve limiting groove, a 10-3 part, push rod threads, a11 part, a torsion spring, a 12 part, a push rod cover, a 13 part, a medicine bottle, a 14 part and a pressure spring.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described in the following with reference to the accompanying drawings, and based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without making any inventive effort should be included in the scope of protection of the present invention.
The invention will be further described with reference to the drawings and preferred embodiments.
Examples
1-21, A split energy-storage automatic injection device for facilitating the assembly of a medical apparatus according to a preferred embodiment of the present invention comprises a medicine compartment assembly, an energy-storage assembly and a medicine bottle 13;
1-3, the top end of the medicine bottle 13 is provided with a needle, the tail end of the medicine bottle 13 is provided with a plunger, the medicine bin assembly comprises a medicine bin shell 5, a hidden needle assembly and a medicine bottle support 4, the medicine bottle support 4 is arranged in the medicine bin shell 5, the top end of the medicine bottle 13 is inserted into the medicine bottle support 4, the hidden needle assembly is connected between the medicine bin shell 5 and the medicine bottle support 4 in a sliding manner, the energy storage assembly comprises an upper shell 6, an energy storage switch sleeve 9 and a medicine feeding assembly, the medicine feeding assembly is clamped with the energy storage switch sleeve 9 and is arranged in the upper shell 6;
The medicine bin assembly and the energy storage assembly are connected through the buckle assembly arranged on the outer walls of the medicine bin shell 5 and the upper shell 6, after the medicine bin assembly and the energy storage assembly are installed, the output end of the medicine feeding assembly is in butt joint with a plunger at the tail end of the medicine bottle 13, the hidden needle assembly is in butt joint with the energy storage switch sleeve 9, before the hidden needle assembly is compressed, the hidden needle assembly shields the needle head, and the energy storage switch sleeve 9 limits the medicine feeding assembly to push liquid.
The medicine bin assembly and the energy storage assembly are of split type, the medicine bottle 13 is assembled at the tail of the medicine bin assembly, the invention can finish the respective assembly of the medicine bin assembly and the energy storage assembly in the instrument production factory at the early stage, and after the medicine bottle is assembled in the medicine factory, the drug bin assembly and the energy storage assembly are assembled through the quick-insertion buckle arranged on the drug bin assembly and the buckling of the energy storage assembly, so that the final assembly process can be completed conveniently and rapidly. And the energy storage switch sleeve 9 is driven to be separated from the administration component when the hidden needle component is pushed to leak out of the needle head in the injection process, and the administration component starts to move based on energy storage to push the plunger to complete automatic injection.
Fig. 4, 5, and 9 are combined, wherein fig. 9 (b) is a cross-sectional view of the upper case in the front view direction, and fig. 9 (a) is a cross-sectional view of the upper case in the side view direction. The medicine bin shell 5 is further provided with a buckling convex hull 5-1 away from the outer wall of the energy storage component end, the medicine bin component further comprises a mounting cap 1, and the buckling convex hull 5-1 is connected with the side wall of the safety cap 1 in a clamping mode. When the buckling convex hull 5-1 is clamped with the safety helmet 1, the mounting helmet 1 is sleeved on the outer side of the hidden needle sleeve 2 extending out of the medicine bin shell 5, so that the hidden needle sleeve 2 is prevented from being touched by mistake.
The buckling assembly comprises buckling buckles 5-3 and buckling grooves, a connecting arm is arranged on the medicine bin shell 5, the buckling buckles 5-3 are arranged on the outer wall of the connecting arm, buckling grooves 6-6 matched with the buckling buckles 5-3 are arranged on the outer wall of the upper shell 6, and the connecting arm stretches into the upper shell 6 until the buckling buckles 5-3 are in clamping connection with the buckling grooves 6-6, so that the medicine bin assembly and the energy storage assembly can be quickly installed.
Referring to fig. 7 and 8, the hidden needle assembly comprises a hidden needle sleeve 2 and a limiting ring 3, wherein the hidden needle sleeve 2 is sleeved between the medicine bottle support 4 and the medicine bin shell 5 in a sliding way, a placing groove 2-2 is formed in the hidden needle sleeve 2, the limiting ring 3 is arranged in the placing groove 2-2, and the limiting ring 3 can rotate along the circumferential direction of the placing groove 2-2 and cannot move along the axial direction of the placing groove;
The outer wall of the medicine bottle support 4 is provided with a sliding track, the sliding track comprises a rising track 4-1 and a falling track 4-2, the top ends of the rising track 4-1 and the falling track 4-2 are combined with a switching track, the sliding convex hull 3-1 is connected in the rising track 4-1 or the falling track 4-2 in a sliding mode, and along with the compression or release of the hidden needle sleeve 2, the sliding convex hull 3-1 moves along the sliding track to realize the leakage or shielding of a needle head in the medicine bin assembly.
As shown in fig. 16, a compression spring 14 is disposed between the energy storage switch sleeve 9 and the top cover 7. The pressure spring 14 is used for providing resetting power of the hidden needle assembly, when the hidden needle sleeve 2 is compressed in contact with the skin, the energy storage switch sleeve 9 compresses the pressure spring 14, and when the hidden needle sleeve 2 is far away from the skin, the pressure spring 14 is reset to provide thrust, so that the energy storage switch sleeve 9 is pushed to reset, and the hidden needle sleeve 2 is synchronously pushed to reset.
As shown in fig. 4-9, one end of the hidden needle sleeve 2 is further provided with a push rod 2-3, the push rod 2-3 protrudes out of the radial arrangement of the hidden needle sleeve 2, and the push rod 2-3 extends into the upper shell 6 to be in butt joint with the energy storage switch sleeve 9;
The inner wall of the medicine bin shell 5 is provided with a hidden needle sleeve sliding rail 5-5, a lower limit surface 5-6 is arranged below the hidden needle sleeve sliding rail 5-5, the ejector rod 2-3 is arranged in the hidden needle sleeve sliding rail 5-5, and when the bottom of the ejector rod 2-3 is abutted to the lower limit surface 5-6, the hidden needle sleeve 2 extends out of the medicine bin shell 5.
When in injection, the hidden needle sleeve 2 is compressed towards the inside of the split energy storage automatic injection device which is convenient for the medical instrument to assemble, and then the energy storage switch sleeve 9 is driven to move, so that the energy storage switch sleeve 9 is separated from the administration component. The hidden needle sleeve is limited to move only along the axial direction by the hidden needle sleeve sliding rail 5-5, and the hidden needle sleeve 2 is fixed by the lower limiting surface 5-6, so that the hidden needle sleeve 2 wraps the needle head and simultaneously the hidden needle sleeve 2 is prevented from being separated from the device.
As shown in fig. 3, 9 and 11-15, the drug delivery assembly comprises a driving rod 8, a push rod 10 and a torsion spring 11, wherein the driving rod 8 is hollow, and the push rod 10 is arranged inside the driving rod 8 as an output end of the drug delivery assembly;
The energy storage assembly further comprises a top cover 7, wherein a torsion spring upper fixing groove 7-1, a top cover buckling buckle 7-2 and a driving rod upper inserting pin 7-3 are arranged on the top cover 7, one end of the upper shell 6 is further provided with a top cover buckling groove 6-7, and the top cover 7 is connected with the top cover buckling groove 6-7 through the top cover buckling buckle 7-2;
The upper end of the driving rod 8 is connected with the driving rod upper insertion pin 7-3, the outer wall of the lower end of the driving rod 8 is provided with a plurality of meshing teeth 8-1, and the inner wall of the energy storage switch sleeve 9 is provided with a plurality of limit ribs 9-1;
The lower end of the driving rod 8 is also provided with a torsion spring lower fixing groove 8-4, one end of the torsion spring 11 is connected with the torsion spring upper fixing groove 7-1, and the other end is connected with the torsion spring lower fixing groove 8-4;
before the hidden needle sleeve 2 is compressed, each limiting rib 9-1 extends into the space between two meshing teeth 8-1 and is used for limiting the rotation of the driving rod 8, so that the torsion spring 11 is limited to drive the push rod 10 in the driving rod 8 to rotate for liquid pushing operation.
The structure realizes energy storage through the torsion spring 11, the driving rod 8 is clamped with the energy storage switch sleeve 9 in an initial state, the rotation of the driving rod 8 is limited through the limit rib 9-1 of the energy storage switch sleeve 9, and then the torsion spring 11 is limited to realize energy storage locking, and when the limit rib 9-1 of the energy storage switch sleeve 9 is separated from the meshing teeth 8-1, the driving rod 8 rotates under the action of the torsion spring 11, and then the push rod 10 in the driving rod is driven to rotate.
As shown in fig. 17, a push rod cover 12 may be further disposed at the abutting end of the push rod 10 and the plunger, and the push rod cover 12 is connected to the push rod 10 through a push rod sleeve limiting groove 10-2.
Referring to fig. 3 and fig. 9-15, the energy storage switch sleeve 9 includes a sliding arm 9-2, a vertical limit sliding groove 6-5 is provided on the inner wall of the upper case 6, and the sliding arm 9-2 is clamped with the limit sliding groove 6-5 and moves along the limit sliding groove 6-5.
The inner wall of the driving rod 8 is provided with an engagement convex hull 8-3, and the outer wall of the push rod 10 is provided with a push rod thread 10-3 and an engagement groove 10-1 matched with the engagement convex hull 8-3;
The upper shell 6 is far away from the one end of top cap 7 is provided with the fixed plate, be provided with screw thread through-hole 6-1 on the fixed plate, the one end of push rod 10 is connected with the meshing convex closure 8-3 in the actuating lever 8 through meshing recess 10-1, the other end pass behind the screw thread through-hole 6-1 with the plunger butt.
The driving rod 8 drives the push rod 10 to rotate under the action of the torsion spring 11, so that the push rod 10 moves axially compared with the fixed plate, and the plunger is pushed to perform injection.
The fixed plate is provided with a plurality of sounding ribs 6-2 along the circumference, the bottom of the driving rod 8 is provided with sounding poking pieces 8-2, and the sounding poking pieces 8-2 are contacted with the sounding ribs 6-2.
In the rotation process of the driving rod, the sounding pulling piece 8-2 rotates to impact the sounding rib 6-2, the sounding pulling piece 8-2 elastically deforms and then impacts the sounding rib 6-2 uniformly distributed on the subsequent circumference again, so that the whole injection process generates injection prompt sound and vibration feedback of 'click', the user is prompted to perform injection, and the injection is completed when the injection prompt sound and vibration feedback stop.
Referring to fig. 4-7 and 9-10, a first insertion groove 6-3 is formed in the outer side of the fixing plate, a medicine bin insertion guide wall 6-8 is arranged at the bottom of the upper shell 6, and the connecting arm extends into the upper shell 6 along the medicine bin insertion guide wall 6-8 through the first insertion groove 6-3 until the buckling buckle 5-3 is in clamping connection with the buckling groove 6-6.
The outer side of the fixed plate is also provided with a second insertion groove 6-4, and the ejector rod 2-3 passes through the second insertion groove 6-4 and then is abutted against the energy storage switch sleeve 9.
The inner wall of the medicine bin shell 5 is provided with a medicine bottle support fixing groove 5-4, the medicine bottle support 4 comprises a medicine bottle accommodating cavity 4-4, a support fixing buckle 4-3 is arranged at the inlet of the medicine bottle accommodating cavity 4-4, the support fixing buckle 4-3 is clamped with the medicine bottle support fixing groove 5-4, and the medicine bottle 13 is arranged in the medicine bottle accommodating cavity 4-4.
The medicine bin shell 5 is provided with a first injection observation window 5-2, the hidden needle sleeve 2 is provided with a second injection observation window 2-1, and the position of the second injection observation window 2-1 corresponds to the position of the first injection observation window 5-2. The state of the medicine bottle 13 in the medicine compartment assembly can be directly observed through the first injection observation window 5-2 and the second injection observation window 2-1.
In the injection process, firstly, the hidden needle sleeve 2 is in contact with the skin to shrink inwards, at the moment, the energy storage switch sleeve 9 is positioned at an initial position before the hidden needle sleeve 2 is shrunk inwards due to the action of the pressure spring 14, the ejector rod 2-3 is abutted with the sliding arm 9-2 of the energy storage switch sleeve 9, and the limit rib 9-1 and the meshing teeth 8-1 are positioned at meshing positions synchronously before the injection is triggered;
In the retraction process of the hidden needle sleeve, the ejector rod 2-3 slides towards the top cover 7 against the sliding arm 9-2, so that the energy storage switch sleeve 9 leaves the driving rod 8, the locked driving rod 8 is not limited by axial rotation, and the driving rod 8 drives the push rod 10 to rotate under the action of the torsion spring 11, so that the push rod 10 moves axially compared with the fixed plate, and the plunger is pushed to perform injection.
After injection is completed, the far end of the hidden needle sleeve 2 leaves the skin surface without stress, and at the moment, the pressure spring 14 is reset to provide thrust to push the energy storage switch sleeve 9 to reset, and synchronously push the hidden needle sleeve 2 to reset, so that locking is realized, and the needle is prevented from leaking again.
The sliding locking process of the hidden needle sleeve 2 can be combined with that shown in fig. 19-21, before the hidden needle sleeve 2 is compressed, the sliding convex hull 3-1 is arranged in the ascending track 4-1, the hidden needle sleeve 2 shields the needle head in the medicine bin assembly, when the hidden needle sleeve 2 is compressed, the hidden needle sleeve 2 drives the sliding convex hull 3-1 to move to the switching track at the top along the ascending track 4-1, the needle head is leaked out to perform injection operation, after injection is completed, the hidden needle sleeve 2 resets, slides from the switching track to the end part of the descending track 4-2 and realizes locking, and at the moment, the needle head is shielded in the hidden needle sleeve 2, so that the puncture protection of the needle head is realized through the structure.
Finally, it should be noted that the above description is only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and that the simple modification and equivalent substitution of the technical solution of the present invention can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The split energy storage automatic injection device convenient for assembling of the medicine instrument is characterized by comprising a medicine bin assembly, an energy storage assembly and a medicine bottle;
The medicine bin assembly comprises a medicine bin shell, a hidden needle assembly and a medicine bottle support, wherein the medicine bottle support is arranged in the medicine bin shell, the top end of a medicine bottle is inserted into the medicine bottle support, the hidden needle assembly is connected in the medicine bin shell in a sliding manner, the energy storage assembly comprises an upper shell, an energy storage switch sleeve and a medicine feeding assembly, the medicine feeding assembly is connected with the energy storage switch sleeve in a clamping manner and is arranged in the upper shell, the top end of the medicine bottle is provided with a needle head, and the tail end of the medicine bottle is provided with a plunger;
The medicine bin assembly and the energy storage assembly are connected through a buckle assembly arranged on the outer walls of the medicine bin shell and the upper shell, after the medicine bin assembly and the energy storage assembly are installed, the output end of the medicine feeding assembly is abutted with a plunger at the tail end of the medicine bottle, the hidden needle assembly is abutted with the energy storage switch sleeve, before the hidden needle assembly is compressed, the hidden needle assembly shields the needle head, and the energy storage switch sleeve limits the medicine feeding assembly to push liquid;
the hidden needle assembly comprises a hidden needle sleeve and a limiting ring, the hidden needle sleeve is connected between the medicine bottle support and the medicine bin shell in a sliding manner, a placing groove is formed in the hidden needle sleeve, the limiting ring is arranged in the placing groove, and a sliding convex hull is arranged on the inner wall of the limiting ring;
The medicine bottle support is characterized in that the outer wall of the medicine bottle support is provided with a sliding track, the sliding track comprises a rising track and a falling track, and the top ends of the rising track and the falling track are combined in a switching track;
a push rod is further arranged at one end of the hidden needle sleeve, protrudes out of the radial arrangement of the hidden needle sleeve, and extends into the upper shell to be abutted with the energy storage switch sleeve;
The inner wall of the medicine bin shell is provided with a hidden needle sleeve sliding rail, and a lower limit surface is arranged below the hidden needle sleeve sliding rail;
The energy storage switch sleeve comprises a sliding arm, a vertical limit sliding groove is formed in the inner wall of the upper shell, and the sliding arm is clamped with the limit sliding groove and moves along the limit sliding groove;
the energy storage assembly further comprises a top cover, and the top cover is connected with one end of the upper shell;
and a pressure spring is arranged between the energy storage switch sleeve and the top cover.
2. The split type energy storage automatic injection device convenient for assembling of medicine instruments according to claim 1, wherein the buckle assembly comprises a buckling buckle and a buckling groove, a connecting arm is arranged on the medicine bin shell, the buckling buckle is arranged on the outer wall of the connecting arm, the buckling groove matched with the buckling buckle is formed in the outer wall of the upper shell, and the connecting arm stretches into the upper shell until the buckling buckle is in clamping connection with the buckling groove.
3. The split type energy storage automatic injection device convenient for assembling of medicine instruments according to claim 2, wherein the medicine feeding assembly comprises a driving rod, a push rod and a torsion spring, wherein the driving rod is hollow, the push rod is arranged in the driving rod and used as an output end of the medicine feeding assembly, the energy storage assembly further comprises a top cover, the top cover is connected with one end of the upper shell, and a fixing groove on the torsion spring and an inserting pin on the driving rod are arranged on the top cover;
The upper end of the driving rod is connected with an insertion pin on the driving rod, the outer wall of the lower end of the driving rod is provided with a plurality of meshing teeth, and the inner wall of the energy storage switch sleeve is provided with a plurality of limit ribs;
Before the hidden needle sleeve is compressed, each limiting rib extends into the space between two meshing teeth.
4. A split energy storage automatic injection device for facilitating the assembly of a medical instrument according to claim 3, wherein the inner wall of the driving rod is provided with an engagement convex hull, and the outer wall of the push rod is provided with threads and an engagement groove matched with the engagement convex hull;
The upper shell is far away from one end of top cap is provided with the fixed plate, be provided with the screw thread through-hole on the fixed plate, the one end of push rod is connected with the meshing convex closure in the actuating lever through the meshing recess, the other end pass the screw thread through-hole back with the plunger butt.
5. The split energy storage automatic injection device convenient for assembling of a medical instrument according to claim 4, wherein the fixing plate is provided with a plurality of sounding ribs along the circumferential direction, the bottom of the driving rod is provided with sounding poking pieces, and the sounding poking pieces are in contact with the sounding ribs.
6. The split energy storage automatic injection device convenient for assembling of a medicine instrument according to claim 5, wherein a first insertion groove is formed in the outer side of the fixing plate, and the connecting arm penetrates through the first insertion groove to extend into the upper shell to connect the medicine bin shell and the upper shell.
7. The split energy storage automatic injection device convenient for assembling of a medical instrument as claimed in claim 6, wherein a second insertion groove is further formed in the outer side of the fixing plate, and the ejector rod is abutted to the energy storage switch after passing through the second insertion groove.
8. The split energy storage automatic injection device convenient for assembling of a medicine instrument according to claim 1, wherein a medicine bottle support fixing groove is formed in the inner wall of the medicine bin shell, the medicine bottle support comprises a medicine bottle accommodating cavity, a support fixing buckle is arranged at the inlet of the medicine bottle accommodating cavity, the support fixing buckle is clamped with the medicine bottle support fixing groove, and the medicine bottle is arranged in the medicine bottle accommodating cavity.
9. The split energy storage automatic injection device convenient for assembling of medicine instruments according to claim 2, wherein a first injection observation window is arranged on the medicine bin shell, a second injection observation window is arranged on the hidden needle sleeve, and the position of the second injection observation window corresponds to that of the first injection observation window.
10. The split energy storage automatic injection device convenient for assembling of a medicine instrument according to claim 1, wherein the outer wall of the medicine compartment shell, which is far away from the end of the energy storage component, is further provided with a buckling convex hull, the medicine compartment component further comprises an installation cap, and the buckling convex hull is clamped with the side wall of the safety cap.
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| CN202511479831.6A CN120919463B (en) | 2025-10-16 | 2025-10-16 | A convenient, modular, energy-storage-based automatic injection device for assembling pharmaceuticals and medical devices. |
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| CN202511479831.6A CN120919463B (en) | 2025-10-16 | 2025-10-16 | A convenient, modular, energy-storage-based automatic injection device for assembling pharmaceuticals and medical devices. |
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| CN117205401A (en) * | 2022-06-02 | 2023-12-12 | 重庆金赛星医疗科技有限公司 | An injection device containing a hidden needle component |
| CN120643792A (en) * | 2025-06-27 | 2025-09-16 | 巨翊科技（上海）有限公司 | Self-driven automatic injection device |
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| EP2468333A1 (en) * | 2010-12-21 | 2012-06-27 | Sanofi-Aventis Deutschland GmbH | Auto-injector |
| CN211068478U (en) * | 2019-07-08 | 2020-07-24 | 耿旭升 | Medical injection device with replaceable medicine bottle |
| CN111150906B (en) * | 2020-02-24 | 2020-09-29 | 苏州恒瑞宏远医疗科技有限公司 | Two-step automatic injection device |
| EP4173659A1 (en) * | 2021-10-27 | 2023-05-03 | medmix Switzerland AG | Autoinjector, method of activating an autoinjector and method of assembling an autoinjector |
| CN219127754U (en) * | 2021-11-01 | 2023-06-06 | 苏州嘉树生物医疗科技有限公司 | Split type drug administration device with protection function |
| CN222854361U (en) * | 2024-06-11 | 2025-05-13 | 重庆金赛星医疗科技有限公司 | Drug delivery device |
| CN120679033A (en) * | 2025-06-13 | 2025-09-23 | 巨翊科技（上海）有限公司 | Device with anti-puncture protection and prefilled syringe |
| CN120643797A (en) * | 2025-06-13 | 2025-09-16 | 巨翊科技（上海）有限公司 | Device for providing puncture-proof protection for hidden needle and post-injection needle head and prefilled syringe |
| CN120695302A (en) * | 2025-06-27 | 2025-09-26 | 巨翊科技（上海）有限公司 | Energy storage automatic injection device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117205401A (en) * | 2022-06-02 | 2023-12-12 | 重庆金赛星医疗科技有限公司 | An injection device containing a hidden needle component |
| CN120643792A (en) * | 2025-06-27 | 2025-09-16 | 巨翊科技（上海）有限公司 | Self-driven automatic injection device |
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