CN219050059U - Medicament delivery device with needling prevention function - Google Patents
Medicament delivery device with needling prevention function Download PDFInfo
- Publication number
- CN219050059U CN219050059U CN202222095575.9U CN202222095575U CN219050059U CN 219050059 U CN219050059 U CN 219050059U CN 202222095575 U CN202222095575 U CN 202222095575U CN 219050059 U CN219050059 U CN 219050059U
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- cartridge
- sleeve
- push rod
- needle
- hollow needle
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- 239000003814 drug Substances 0.000 title claims abstract description 69
- 230000002265 prevention Effects 0.000 title description 3
- 239000007787 solid Substances 0.000 claims abstract description 35
- 239000007943 implant Substances 0.000 claims abstract description 19
- 238000002513 implantation Methods 0.000 claims abstract description 17
- 208000012266 Needlestick injury Diseases 0.000 claims abstract description 13
- 238000012377 drug delivery Methods 0.000 claims abstract description 3
- 230000009471 action Effects 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims 3
- 230000004888 barrier function Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 206010069803 Injury associated with device Diseases 0.000 description 4
- 210000003815 abdominal wall Anatomy 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000006454 hepatitis Diseases 0.000 description 1
- 231100000283 hepatitis Toxicity 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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- Health & Medical Sciences (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 present utility model provides a drug delivery device with an anti-needle stick function, comprising: a cartridge having a proximal end, a distal end, and a chamber between the proximal end and the distal end for containing a solid implant medicament; a hollow needle secured to the proximal end of the cartridge and in communication with the chamber; a pusher assembly mounted to the distal end of the cartridge for pushing the solid implant medicament into the hollow needle within the chamber; the sleeve is sleeved on the cartridge, the sleeve comprises an upper sleeve and a lower sleeve which are connected with each other, the cartridge can slide in the sleeve, and a spring is arranged between the sleeve and the cartridge; the upper sleeve is provided with a starting buckle for locking the cartridge, and the lower sleeve is provided with a limiting buckle for limiting the cartridge to move downwards relative to the sleeve so as to prevent the hollow needle from exposing the sleeve. According to the medicament delivery device, when the solid implantation medicament is implanted into a patient, the hollow needle can be ensured to retract into the device, the hollow needle is prevented from being accidentally pushed out of the device, and accidents such as needle puncture and the like are effectively avoided.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a medicament conveying device with a needling prevention function.
Background
Needle injuries pose a serious threat to public health, which can lead to the transmission of disease from one person to another, such as infection by HIV or hepatitis, which often require isolation for a significant period of time to observe. In addition, once a needle stick injury occurs, psychological and physiological wounds may be created to the person, which can be highly damaging and a serious economic burden, so that cross-infection caused by the needle stick injury is unacceptable.
Needle injuries extend the life of medical devices, and the emphasis on the risk of needle injuries has led to the hope of having a variety of types of safety systems that minimize the likelihood of needle injuries by retracting or shielding the needle after use. Clear legislation that has been passed abroad, as well as medical insurance companies and healthcare institutions, encourages or enforces the use of such guards.
When a sustained release medicament is applied to a human body, it is common practice to first establish a channel for accommodating the medicament in the abdominal wall of the human body by using a hollow needle, and then to deliver the medicament into the body, and there may be problems that the medicament cannot be accurately and completely delivered into the body during injection, or that the medicament may be pricked by a needle during and after injection.
For example, one prior art solution is to manually eject a metal rod from the hollow needle so that the tip of the metal rod is exposed to the needle tip a distance, the combination of such mechanisms is only capable of protecting against axial puncture injuries, but not against scratches caused by the exposed needle tip in the lateral direction, and the surface of the tip of the metal rod also enters the patient during the drug implantation process, which also causes blood-borne contamination and may cause infection.
For another example, another technical solution is an automatically operated safety sheath system of a syringe proposed in chinese patent No. CN01805275.4, which is matched by a complex mechanism, and after the puncture is completed, the housing of the injection device is ejected forward, so as to cover the needle tip. However, if the user's finger is not in the correct position, deformation of the housing catch is blocked, which may result in failure of the mechanism to actuate.
Disclosure of Invention
In order to solve the technical problems in the prior art, embodiments of the present utility model provide a drug delivery device with an anti-piercing function for implanting a linear solid implant drug into a patient's body, which can effectively ensure that a hollow needle is retracted into the device after injection is completed and prevent accidents such as needle stick injury caused by accidentally pushing the hollow needle out of the device.
According to an embodiment of the present utility model, there is provided a medicament delivery device with an anti-needle-stick function, comprising: a cartridge having a proximal end, a distal end, and a chamber between the proximal end and the distal end for containing a solid implant medicament; a hollow needle secured to the proximal end of the cartridge and in communication with the chamber; a pusher assembly mounted to the distal end of the cartridge for pushing the solid implant medicament into the hollow needle within the chamber; the sleeve is sleeved on the cartridge, the sleeve comprises an upper sleeve and a lower sleeve which are connected with each other, the cartridge can slide in the sleeve, and a spring is arranged between the sleeve and the cartridge; the upper sleeve is provided with a starting buckle for locking the cartridge, when the push rod assembly pushes the solid implantation medicament into the hollow needle, the push rod assembly pushes the starting buckle to release the cartridge, so that the cartridge drives the hollow needle to move upwards relative to the sleeve under the action of the spring, and the solid implantation medicament is injected out of the hollow needle; wherein, lower sleeve is equipped with the spacing buckle that is used for restricting cartridge case relative to sleeve downwardly moving to prevent that the hollow needle from exposing the sleeve.
Further, the push rod assembly comprises a push rod seat and a push rod connected to the push rod seat, and a limiting clamp used for limiting the movement of the push rod seat is arranged between the push rod seat and the sleeve.
Further, the push rod seat is provided with a locking catch for locking the cartridge to the push rod seat.
Further, the locking catch has a locking catch surface extending obliquely towards the centre axis of the push rod seat.
Further, when the cartridge is moved upward relative to the sleeve by the spring, the cartridge first presses the locking catch of the pusher seat outward, and then the locking catch springs back to lock the cartridge to the pusher seat.
Further, the push rod seat has a pushing portion for pushing the start buckle, the pushing portion has an outer inclined surface, and the start buckle has an inner inclined surface matched with the outer inclined surface of the pushing portion.
Further, the lower sleeve is also provided with a stop for limiting upward movement of the cartridge relative to the sleeve.
Further, the periphery of the cartridge is provided with a flange which can be locked between the baffle plate of the lower sleeve and the limit catch.
Further, the limit catch has a limit catch surface extending obliquely towards the central axis of the sleeve.
Further, the medicament delivery device further comprises a sheath sleeved outside the hollow needle.
Further, when the spring is fully released, the hollow needle is fully retracted within the sleeve.
In this context, "upward movement" means that the cartridge is moved within the sleeve in the direction of the push rod assembly and "downward movement" means that the cartridge is moved within the sleeve in the direction of the hollow needle.
Compared with the prior art, the technical scheme of the embodiment of the utility model has the following advantages:
in the medicament delivery device according to the embodiment of the utility model, the upper sleeve is provided with the starting buckle for locking the cartridge, and when the push rod assembly pushes the solid implantation medicament into the hollow needle, the push rod assembly pushes the starting buckle to release the cartridge, so that the cartridge drives the hollow needle to move upwards relative to the sleeve under the action of the spring, and the solid implantation medicament is injected out of the hollow needle. According to the embodiment of the utility model, the hollow needle establishes a stable and reliable tunnel for containing the solid implantation medicament on the abdominal wall of a human body, the solid implantation medicament is conveyed to the inside close to the needle point of the hollow needle, so that the medicament can completely enter the target position of the human body, then the hollow needle is retracted into the device, the solid implantation medicament stays in the tunnel and is released, the whole process has no risk of needle exposure, and accidents such as needle puncture and the like are avoided.
And the lower sleeve is provided with a limiting buckle for limiting the downward movement of the cartridge case relative to the sleeve so as to prevent the hollow needle from exposing the sleeve, thereby avoiding accidents such as needle stabs and the like caused by the fact that an operator carelessly pushes the push rod assembly to expose the hollow needle out of the sleeve.
Further, the push rod assembly comprises a push rod seat and a push rod connected to the push rod seat, and a limiting clamp used for limiting the movement of the push rod seat is arranged between the push rod seat and the sleeve. Before the device is not used, the limiting clamp limits the movement of the push rod seat, so that the solid implantation medicament is prevented from being pushed into the hollow needle due to accidental pushing of the push rod seat.
Further, the push rod seat is provided with a locking catch for locking the cartridge to the push rod seat. The cartridge is locked to the pusher seat by the locking catch, an interlocking of cartridge and pusher seat is achieved.
Further, the lower sleeve is also provided with a baffle plate for limiting the upward movement of the cartridge relative to the sleeve, the periphery of the cartridge is provided with a flange, and the flange can be locked between the baffle plate of the lower sleeve and the limiting buckle. Through the cooperation of baffle and spacing buckle, the removal of restriction cartridge case for the cartridge case neither can upwards move nor can the downwardly move, thereby avoided because the unexpected hollow needle ejecting device.
Drawings
Other features and advantages of the present utility model will be better understood from the following detailed description of alternative embodiments taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and wherein:
fig. 1 shows a schematic view of a medicament delivery device according to an embodiment of the present utility model;
FIG. 2 shows a schematic cross-sectional view of the medicament delivery device of the embodiment shown in FIG. 1;
FIG. 3 shows a schematic view of the use of the medicament delivery device of the embodiment shown in FIG. 1, wherein the push rod assembly pushes the activation clasp to release the cartridge;
fig. 4 shows a schematic view of the use of the medicament delivery device of the embodiment shown in fig. 1, wherein the cartridge pushes the locking catch outwards under the influence of the spring;
fig. 5 shows a schematic view of the use of the medicament delivery device of the embodiment shown in fig. 1, wherein the locking catch springs back to lock the cartridge to the pusher seat;
fig. 6 shows a schematic view of the use of the medicament delivery device of the embodiment shown in fig. 1, wherein the limit catch limits the downward movement of the cartridge; and
fig. 7 shows a schematic view of the medicament delivery device of the embodiment shown in fig. 1 after use, with the hollow needle retracted inside the device.
Detailed Description
The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and the specific examples, while indicating specific ways of making and using the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The structural position of the various components as described, such as the directions of up, down, top, bottom, etc., is not absolute, but rather relative. When the individual components are arranged as shown in the figures, these directional expressions are appropriate, but when the position of the individual components in the figures changes, these directional expressions also change accordingly.
As shown in fig. 1-2, the medicament delivery device 100 comprises a cartridge 10, a hollow needle 20, a push rod assembly 30 and a sleeve 40. The cartridge 10 has a proximal end 11, a distal end 12 and a chamber 13 between the proximal end 11 and the distal end 12 for containing a solid implant medicament 50, the distal end 12 being provided with a cartridge bung 14 closing the chamber 13. A hollow needle 20 is secured to the proximal end 11 of the cartridge 10 and communicates with the chamber 13. Hollow needle 20 has a needle cannula 21 and a needle tip 22, needle cannula 21 being in communication with chamber 13, needle tip 22 being for penetrating, for example, the abdominal wall of a human body in order to establish a tunnel containing solid implant medicament 50.
A push rod assembly 30 is mounted to the distal end 12 of the cartridge 10 for pushing the solid implant medicament 50 into the hollow needle 20 within the chamber 13. The push rod assembly 30 includes a push rod seat 31 and a push rod 32 coupled to the push rod seat 31, with a stopper clamp 33 provided between the push rod seat 31 and the sleeve 40 for restricting movement of the push rod seat 31. Before being not used, the movement of the push rod holder 31 is restricted by the stopper 33, preventing the solid implant agent 50 from being pushed into the hollow needle 20 due to accidental pushing of the push rod holder 31. One end of the pushrod 32 is fixed to the center of the pushrod seat 31 in a known manner and the other end extends through the bung 14 into the chamber 13 of the cartridge 10 to facilitate pushing the solid implant 50 downward within the chamber 13.
Herein, "upward movement" refers to movement of the cartridge 10 within the sleeve 40 toward the push rod assembly 30, and "downward movement" refers to movement of the cartridge 10 within the sleeve 40 toward the hollow needle 20, i.e., away from the push rod assembly 30.
The sleeve 40 is sleeved outside the cartridge 10, the sleeve 40 comprises an upper sleeve 41 and a lower sleeve 42, the inner diameter of the upper sleeve 41 is larger than that of the lower sleeve 42, the upper sleeve 41 is used for accommodating the push rod seat 31 of the push rod assembly 30, and the lower sleeve 42 is used for accommodating the cartridge 10. The upper sleeve 41 and the lower sleeve 42 may be two separate parts, connected to each other in a known manner, or may be integrally formed, for example by injection moulding. For example, two symmetrical grooves are provided on the outer circumference of the upper sleeve 41 and two symmetrical protrusions are provided on the outer circumference of the lower sleeve 42, and the assembly of the upper sleeve 41 and the lower sleeve 42 is achieved by snapping the protrusions of the lower sleeve 42 into the corresponding grooves. The cartridge 10 is able to slide up and down within the sleeve 40 relative to the sleeve 40, with a spring 60 being provided between the upper sleeve 41 of the sleeve 40 and the cartridge 10, the spring 60 being in a compressed state when the cartridge 10 is mounted within the sleeve 40.
The upper sleeve 41 is provided with an activation catch 411 for locking the cartridge 10, e.g. the upper sleeve 41 is provided with two activation catches 411 arranged symmetrically, the activation catch 411 may take the form of e.g. a resilient arm or a resilient tab formed on the upper sleeve 41. When the push rod assembly 30 pushes the solid implant medicament 50 into the hollow needle 20, the push rod seat 31 of the push rod assembly 30 pushes the starting buckle 411, and the starting buckle 411 is spread outwards to release the cartridge 10, so that the cartridge 10 drives the hollow needle 20 to move upwards relative to the sleeve 40 under the action of the spring 60, and the push rod 32 of the push rod assembly 30 pushes the solid implant medicament 50 out of the hollow needle 20. The lower sleeve 42 is provided with a limit catch 421 for limiting the downward movement of the cartridge 10 relative to the sleeve 40 to prevent the hollow needle 20 from exposing the sleeve 40.
In some embodiments, the push rod holder 31 is provided with a locking catch 311 for locking the cartridge 10 to the push rod holder 31. The locking catch 311 has a locking catch surface 3111 extending obliquely toward the central axis of the push rod seat 31. For example, the push rod rest 31 is provided with two symmetrically arranged locking catches 311, the locking catches 311 may take the form of resilient arms or resilient tabs, for example, formed on the push rod rest 31. When the cartridge 10 moves upward relative to the sleeve 40 under the action of the spring 60, the cartridge 10 presses the locking catch 311 of the pusher seat 31 outwardly, and when the cartridge 10 slides over the locking catch 311, the locking catch 311 springs back to lock the cartridge 10 to the pusher seat 31, effecting interlocking of the cartridge 10 and the pusher seat 31.
As shown in connection with fig. 3-5, in some embodiments, the push rod holder 31 has a push portion 312 for pushing the actuation catch 411, the push portion 312 has an outer sloped surface 3121, and the actuation catch 411 has an inner sloped surface 4111 that mates with the outer sloped surface 3121 of the push portion 312 so that the push portion 312 pushes the actuation catch 411. When the push rod holder 31 moves downward, the outer inclined surface 3121 of the push part 312 slides along the inner inclined surface 4111 of the start catch 411, gradually expanding the start catch 411 outward, thereby releasing the cartridge 10.
In connection with what is shown in fig. 6, in some embodiments, the lower sleeve 42 is further provided with a stop 422 for limiting upward movement of the cartridge 10 relative to the sleeve 40. The outer circumference of the cartridge 10 is provided with a flange 15, the flange 15 being lockable between a stop 422 of the lower sleeve 42 and a limit catch 421 of the lower sleeve 42.
In some embodiments, the limit catch 421 has a limit catch surface 4211 extending obliquely toward the axis of the sleeve 40. When the cartridge 10 moves up within the sleeve 40, the flange 15 of the cartridge 10 moves up along the limit catch surface 4211 pushing the limit catch 421 outwards, and when the cartridge 10 moves over the limit catch 421, the limit catch 421 springs back to lock the cartridge 10 between the flap 422 of the lower sleeve 42 and the limit catch 421 of the lower sleeve 42.
In some embodiments, the medicament delivery device 100 further comprises a sheath 70 that is sleeved over the outside of the hollow needle 20. Before use, the sheath 70 is sleeved outside the hollow needle 20 to prevent the hollow needle from stabbing a patient or medical staff, and the sheath 70 is removed when in use. In some embodiments, when the spring 60 is fully released, the hollow needle 20 is fully retracted within the sleeve 40. For example, when the hollow needle 20 is fully retracted into the lower sleeve 42 of the sleeve 40, the distance between the tip of the hollow needle 20 and the tip of the lower sleeve 42 of the sleeve 40 is 2mm to 10mm.
Referring again to fig. 3, when a user injects, the retainer clip 33 and the sheath 70 are removed, and then the skin of the patient is pierced through the needle tip 22 of the hollow needle 20, the hollow needle 20 is pierced subcutaneously, the plunger seat 31 of the plunger assembly 30 is pushed to drive the plunger 32 to move downward, and the plunger 32 delivers the solid implant medicament 50 into the needle tube 21 of the hollow needle 20. With the push rod seat 31 pressed, the solid implant medicament 50 is pushed to a position close to the needle tip 22 of the hollow needle 20, and meanwhile, the starting buckle 411 of the upper sleeve 41 of the sleeve 40 is spread by the push rod seat 31, so that the medicament cartridge 10 is unlocked, and the medicament cartridge 10 is jacked up by means of the elastic force of the restoring deformation of the spring 60.
Referring again to fig. 4 to 5, the cartridge 10 slides axially upward along the push rod 32, the cartridge 10 pushes the locking buckle 311 of the push rod seat 31 open to continue sliding, and then the locking buckle 311 resumes deformation, so that the cartridge 10 and the push rod seat 31 are interlocked. The solid implant medicament 50 is now restrained from retraction by the push rod 32, and the hollow needle 20 is retracted into the sleeve 40 with the cartridge 10, until the solid implant medicament 50 emerges from the needle cannula 21 of the hollow needle 20 into the patient's skin.
With reference again to fig. 6, as the solid implant dose 50 enters the patient subcutaneously, the injection process has been completed, at which time the restriction of the tail of the push rod seat 31 is released, the spring 60 will continue to resume its shape, thereby continuing to push the cartridge 10 back up, the cartridge 10 continues to move upward along the axial direction of the push rod 32, the limit catch 421 of the lower sleeve 42 of the sleeve 40 is propped against the baffle 422 of the lower sleeve 42 of the sleeve 40, the limit catch 421 springs back to block the downward movement of the cartridge 10, and the baffle 422 will block the upward movement of the cartridge 10, so that the cartridge 10 cannot move upward nor downward, thereby avoiding accidental pushing of the hollow needle out of the device. At this point, the needle tip 22 of the hollow needle 20 is fully retracted within the lower sleeve 42 of the sleeve 40.
In the medicament delivery device according to the embodiment of the utility model, the upper sleeve is provided with the starting buckle for locking the cartridge, and when the push rod assembly pushes the solid implantation medicament into the hollow needle, the push rod assembly pushes the starting buckle to release the cartridge, so that the cartridge drives the hollow needle to move upwards relative to the sleeve under the action of the spring, and the solid implantation medicament is injected out of the hollow needle. According to the embodiment of the utility model, the hollow needle establishes a stable and reliable tunnel for containing the solid implantation medicament on the abdominal wall of a human body, the solid implantation medicament is conveyed to the inside close to the needle point of the hollow needle, the medicament can completely enter the target position of the human body, then the hollow needle is retracted into the device, the solid implantation medicament stays in the tunnel, the whole process has no risk of needle exposure, and accidents such as needle puncture and the like are avoided.
And the lower sleeve is provided with a limiting buckle for limiting the downward movement of the cartridge case relative to the sleeve so as to prevent the hollow needle from exposing the sleeve, thereby avoiding accidents such as needle stabs and the like caused by the fact that an operator carelessly pushes the push rod assembly to expose the hollow needle out of the sleeve.
While the foregoing has described the technical content and features of the present utility model, it will be appreciated that those skilled in the art, upon attaining the teachings of the present utility model, may make variations and improvements to the concepts disclosed herein, which fall within the scope of the present utility model. The above description of embodiments is illustrative and not restrictive, and the scope of the utility model is defined by the claims.
Claims (11)
1. A medicament delivery device with an anti-needle stick function, comprising:
a cartridge having a proximal end, a distal end, and a chamber between the proximal end and the distal end for containing a solid implant medicament;
a hollow needle secured to the proximal end of the cartridge and in communication with the chamber;
a pusher assembly mounted to a distal end of the cartridge for pushing the solid implant medicament into the hollow needle within the chamber; and
the sleeve is sleeved on the cartridge, the sleeve comprises an upper sleeve and a lower sleeve which are connected with each other, the cartridge can slide in the sleeve, and a spring is arranged between the sleeve and the cartridge;
the upper sleeve is provided with a starting buckle for locking the cartridge, when the push rod assembly pushes the solid implantation medicament into the hollow needle, the push rod assembly pushes the starting buckle to release the cartridge, so that the cartridge drives the hollow needle to move upwards relative to the sleeve under the action of the spring, and the solid implantation medicament is injected out of the hollow needle;
the lower sleeve is provided with a limiting buckle for limiting the cartridge to move downwards relative to the sleeve so as to prevent the hollow needle from exposing out of the sleeve.
2. A medicament delivery device with anti-needle stick function according to claim 1, wherein the push rod assembly comprises a push rod seat and a push rod connected to the push rod seat, a limit clip being provided between the push rod seat and the sleeve for limiting the movement of the push rod seat.
3. A medicament delivery device with anti-needle stick function according to claim 2, wherein the push rod holder is provided with a locking catch for locking the cartridge to the push rod holder.
4. A medicament delivery device with anti-needle stick function according to claim 3, wherein the locking catch has a locking catch surface extending obliquely towards the centre axis of the push rod seat.
5. A medicament delivery device with anti-needle punching function according to claim 3, characterized in that when the cartridge is moved upwards relative to the sleeve under the action of the spring, the cartridge presses the locking catch of the pusher seat outwards first, and then the locking catch springs back to lock the cartridge to the pusher seat.
6. A medicament delivery device with anti-needle stick function according to claim 2, wherein the push rod holder has a pushing part for pushing the actuation catch, the pushing part having an outer inclined surface, the actuation catch having an inner inclined surface cooperating with the outer inclined surface of the pushing part.
7. A medicament delivery device with anti-needle punching function according to any of claims 1 to 6, characterized in that the lower sleeve is further provided with a barrier for limiting upward movement of the cartridge relative to the sleeve.
8. A medicament delivery device with anti-needle stick function according to claim 7, wherein the cartridge is provided with a flange at its outer periphery, which flange is lockable between the stop plate and the limit catch of the lower sleeve.
9. A medicament delivery device with anti-needle punching function according to any of claims 1 to 6, characterized in that the limit catch has a limit catch surface extending obliquely towards the central axis of the sleeve.
10. The drug delivery device with an anti-needle stick function according to any one of claims 1 to 6, further comprising a sheath that is sleeved outside the hollow needle.
11. A medicament delivery device with anti-needle stick function according to any of claims 1 to 6, wherein the hollow needle is fully retracted within the sleeve when the spring is fully released.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222095575.9U CN219050059U (en) | 2022-08-10 | 2022-08-10 | Medicament delivery device with needling prevention function |
| PCT/CN2023/112122 WO2024032686A1 (en) | 2022-08-10 | 2023-08-10 | Medicament delivery device with anti-needling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222095575.9U CN219050059U (en) | 2022-08-10 | 2022-08-10 | Medicament delivery device with needling prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219050059U true CN219050059U (en) | 2023-05-23 |
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ID=86362557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222095575.9U Active CN219050059U (en) | 2022-08-10 | 2022-08-10 | Medicament delivery device with needling prevention function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN219050059U (en) |
| WO (1) | WO2024032686A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032688A1 (en) * | 2022-08-10 | 2024-02-15 | 泰尔茂医疗产品(杭州)有限公司 | Medicament delivery apparatus with automatic protection apparatus |
| WO2024032686A1 (en) * | 2022-08-10 | 2024-02-15 | 泰尔茂医疗产品(杭州)有限公司 | Medicament delivery device with anti-needling function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771475B (en) * | 2024-02-27 | 2024-05-10 | 山东永聚医药科技股份有限公司 | Implantable pre-filled and sealed syringe for solid preparation and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4105030A (en) * | 1977-01-03 | 1978-08-08 | Syntex (U.S.A.) Inc. | Implant apparatus |
| DE202007006483U1 (en) * | 2007-05-07 | 2007-07-12 | Rexam Pharma Gmbh | Syringe device with an elongated piston chamber |
| FR2925342B1 (en) * | 2007-12-21 | 2011-01-21 | Rexam Pharma La Verpilliere | DEVICE FOR INJECTING AN IMPLANT |
| CN106806963A (en) * | 2015-11-30 | 2017-06-09 | 江苏天士力帝益药业有限公司 | A kind of solid drugs syringe |
| BR112019002267B1 (en) * | 2016-08-05 | 2022-11-29 | Bharat Serums And Vaccines Ltd | SAFE HOUSING BASED IMPLANT/DRUG INJECTION SYSTEM |
| CN219050059U (en) * | 2022-08-10 | 2023-05-23 | 泰尔茂医疗产品(杭州)有限公司 | Medicament delivery device with needling prevention function |
-
2022
- 2022-08-10 CN CN202222095575.9U patent/CN219050059U/en active Active
-
2023
- 2023-08-10 WO PCT/CN2023/112122 patent/WO2024032686A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032688A1 (en) * | 2022-08-10 | 2024-02-15 | 泰尔茂医疗产品(杭州)有限公司 | Medicament delivery apparatus with automatic protection apparatus |
| WO2024032686A1 (en) * | 2022-08-10 | 2024-02-15 | 泰尔茂医疗产品(杭州)有限公司 | Medicament delivery device with anti-needling function |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024032686A1 (en) | 2024-02-15 |
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