CN219167472U - Medicament delivery device with automatic protection device - Google Patents
Medicament delivery device with automatic protection device Download PDFInfo
- Publication number
- CN219167472U CN219167472U CN202222096627.4U CN202222096627U CN219167472U CN 219167472 U CN219167472 U CN 219167472U CN 202222096627 U CN202222096627 U CN 202222096627U CN 219167472 U CN219167472 U CN 219167472U
- Authority
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- China
- Prior art keywords
- sleeve
- cartridge
- hollow needle
- push rod
- medicament
- Prior art date
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- 239000003814 drug Substances 0.000 title claims abstract description 68
- 239000007787 solid Substances 0.000 claims abstract description 31
- 239000007943 implant Substances 0.000 claims abstract description 15
- 238000002513 implantation Methods 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 5
- 229940079593 drug Drugs 0.000 claims description 4
- 238000012377 drug delivery Methods 0.000 claims description 2
- 206010069803 Injury associated with device Diseases 0.000 description 4
- 210000003815 abdominal wall Anatomy 0.000 description 4
- 208000012266 Needlestick injury Diseases 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000004913 activation Effects 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
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective 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
-
- 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
-
- 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
-
- 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
Abstract
The present utility model provides a medicament delivery device with an automatic protection device comprising: a cartridge having a proximal end, a distal end, and a chamber 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 medicine cartridge, the sleeve comprises an upper sleeve and a lower sleeve which are connected with each other, the medicine cartridge can slide in the sleeve, and a spring is arranged between the lower sleeve and the medicine cartridge; and an automatic guard, comprising: the starting buckle is used for limiting the cartridge to move upwards relative to the lower sleeve; and a limit buckle for limiting the downward movement of the cartridge relative to the upper sleeve so as to prevent the hollow needle from exposing the sleeve. By arranging the automatic protection device, the hollow needle can be retracted into the device, and accidents such as needle puncture and the like are prevented from being caused by accidentally pushing the hollow needle out of the device.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a medicament delivery device with an automatic protection device.
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 automatic protection device for implanting a linear solid implant drug into a patient's body, which can ensure that a hollow needle is retracted into the device and prevent accidents such as needle stick injury due to accidental pushing of 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 automatic protection device, 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 lower sleeve and the cartridge; and an automatic guard, comprising: the starting buckle is arranged on the lower sleeve and used for limiting the cartridge to move upwards relative to the lower sleeve, wherein 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 lower sleeve under the action of the spring, and the solid implantation medicament is injected out of the hollow needle; and the limiting buckle is arranged on the upper sleeve and used for limiting the cartridge to move downwards relative to the upper sleeve so as to prevent the hollow needle from exposing 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 upper sleeve.
Further, the push rod seat is provided with a locking catch for locking the push rod seat to the upper sleeve.
Further, the locking catch extends obliquely outward from the push rod seat in the axial direction of the push rod seat.
Further, the upper sleeve of the sleeve is provided with a baffle for restricting upward movement of the locking buckle.
Further, the push rod seat has a push arm for pushing the actuation buckle, the push arm having an outer inclined surface, the actuation buckle having an inner inclined surface that mates with the outer inclined surface of the push arm.
Further, the limit catch extends obliquely inwards from the upper sleeve in the axial direction 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:
according to an embodiment of the present utility model, an automatic guard includes: the starting buckle is arranged on the lower sleeve and used for limiting the cartridge to move upwards relative to the lower sleeve, wherein 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; and the limiting buckle is arranged on the upper sleeve and used for limiting the cartridge to move downwards relative to the upper sleeve so as to prevent the hollow needle from exposing out of the sleeve. In the medicament delivery device of the embodiment of the utility model, the hollow needle is used for establishing a tunnel for accommodating the solid implantation medicament on the abdominal wall of a human body, the solid implantation medicament is delivered to the inside close to the needle point of the hollow needle, then the hollow needle is retracted into the device, and the solid implantation medicament stays in the tunnel, so that 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 upper 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 push rod seat to the upper sleeve. The push rod seat is locked to the upper sleeve through the locking buckle, so that the push rod seat and the sleeve are interlocked.
Further, the upper sleeve of the sleeve is provided with a baffle for restricting upward movement of the locking buckle. When the locking buckle of the push rod seat touches the baffle of the upper sleeve, the needle point of the hollow needle retreats into the sleeve, thereby realizing the automatic protection of the needle point.
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 utility model, wherein the medicament delivery device is in an initial state;
FIG. 2 shows a 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 an enlarged partial cross-sectional view of the medicament delivery device of the embodiment shown in FIG. 3;
fig. 5 shows a transverse cross-sectional view of the medicament delivery device of the embodiment shown in fig. 3;
FIG. 6 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. 7 shows a schematic view of the use of the medicament delivery device of the embodiment shown in fig. 1, wherein the locking catch limits the downward movement of the cartridge relative to the sleeve;
fig. 8 shows a schematic view of the use of the medicament delivery device of the embodiment shown in fig. 1, wherein the hollow needle is fully retracted into the sleeve.
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. 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 push rod 32 is fixed to the centre of the push rod holder 31 in a known manner, and the other end of the push rod 32 protrudes into the chamber 13 of the cartridge 10 in order to push the solid implant medicament 50 downwards in 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 arranged outside the cartridge 10, the sleeve 40 comprising an upper sleeve 41 and a lower sleeve 42, the upper sleeve 41 and the lower sleeve 42 being either two separate parts, which are connected to each other in a known manner or are 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 capable of sliding up and down within the sleeve 40 relative to the sleeve 40, a stop clip 33 is provided between the upper sleeve 41 of the sleeve 40 and the push rod seat 31 for limiting movement of the push rod seat 31, and a spring 60 is provided between the lower sleeve 42 of the sleeve 40 and the cartridge 10, the spring 60 being in a compressed state when the cartridge 10 is installed within the sleeve 40.
As shown in connection with fig. 3 to 5, the medicament delivery device 100 further comprises an automatic shielding device 70. The automatic protection device 70 comprises an activating catch 71 and a limiting catch 72, wherein the activating catch 71 is arranged on the lower sleeve 42 for limiting the upward movement of the cartridge 10 relative to the lower sleeve 42. In an initial state, the actuation catch 71 catches the flange 111 of the proximal end 11 of the cartridge 10. When the push rod 31 of 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 start catch 71 to release the cartridge 10, so that the cartridge 10 drives the hollow needle 20 to move upwards relative to the lower sleeve 42 under the action of the spring 60, and the push rod 32 of the push rod assembly 30 pushes the solid implant medicament 50 to inject the solid implant medicament 50 out of the hollow needle 20. A limit catch 72 is provided on the upper sleeve 41 for limiting downward movement of the cartridge 10 relative to the upper sleeve 41 to prevent the hollow needle 20 from exposing the sleeve 40. In some embodiments, the number of the start catches 71 may be two, three, four or more, and the number of the limit catches 72 may be two, three, four or more, and these start catches 71 and limit catches 72 are symmetrically arranged along the circumferential direction of the sleeve, respectively.
As shown in connection with fig. 6, the push rod holder 31 is provided with a locking catch 311 for locking the push rod holder 31 to the upper sleeve 41, the locking catch 311 extending obliquely upward and outward from the push rod holder 31 in the axial direction of the push rod holder 31, the locking catch 311 may take the form of an elastic arm or an elastic piece formed on the push rod holder 31, for example.
As shown in connection with fig. 7 to 8, the upper sleeve 41 of the sleeve 40 is provided with a baffle 411 that restricts upward movement of the locking catch 311. When pushing the push rod seat 31 to move downward in the sleeve 40, the baffle 411 of the upper sleeve 41 of the sleeve 40 presses the locking buckle 311 inward first, when the locking buckle 311 is located below the baffle 411, the locking buckle 311 rebounds, and when pushing force is cancelled, the locking buckle 311 cannot move upward due to the existence of the baffle 411.
As further shown in fig. 4 and 5, in some embodiments, the push rod seat 31 has a push arm 312 for pushing the actuation clasp 71, the push arm 312 has an outer sloped surface 3121, and the actuation clasp 71 has an inner sloped surface 711 that mates with the outer sloped surface 3121 of the push arm 312 so that the push arm 312 pushes the actuation clasp 71. When the push rod holder 31 moves downward, the outer inclined surface 3121 of the push arm 312 slides along the inner inclined surface 711 of the start catch 71, gradually expanding the start catch 71 outward, thereby releasing the cartridge 10.
In some embodiments, the limit catch 72 extends obliquely upward and inward from the sleeve 40 along the axial direction of the sleeve 40. When the cartridge 10 moves up within the sleeve 40, the cartridge 10 pushes the limit catch 72 outwards, and when the cartridge 10 moves over the limit catch 72, the limit catch 72 springs back to lock the cartridge 10.
In some embodiments, the medicament delivery device 100 further comprises a sheath 80 that is sleeved over the outside of the hollow needle 20. Before use, the sheath 80 is sleeved outside the hollow needle 20, so that the hollow needle 20 is prevented from stabbing a patient or medical staff, and the sheath 80 is removed during 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 to fig. 5 to 8 again, when a user injects, the limiting clip 33 and the protective sleeve 80 are pulled out firstly, then the needle tip 22 of the hollow needle 20 pierces the skin of the patient to pierce the skin, then the push rod seat 31 is pushed, the limiting buckle 311 of the push rod seat 31 firstly enters the upper sleeve 41, the push rod seat 31 drives the push rod 32 to convey the solid implantation medicament 50 to a position in the hollow needle 20, which is close to the needle tip 22, and simultaneously, the starting buckle 71 of the lower sleeve 42 is propped open by the pushing arm 312 of the push rod seat 31, so that the unlocking of the medicament cartridge 10 is realized.
When the starting buckle 71 is opened, the spring 60 ejects the cartridge 10, the cartridge 10 slides along the push rod 32 to drive the push rod seat 31 to move upwards until the cartridge 10 opens the limit buckle 72 of the upper sleeve 41, and along with the ejection of the spring 60, the locking buckle 311 of the push rod seat 31 bumps against the baffle 411 of the upper sleeve 41, and the needle point 22 of the hollow needle 20 retreats into the sleeve 40, so that the automatic protection of the needle point 22 is realized.
According to an embodiment of the present utility model, an automatic guard includes: the starting buckle is arranged on the lower sleeve and used for limiting the cartridge to move upwards relative to the lower sleeve, wherein 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; and the limiting buckle is arranged on the upper sleeve and used for limiting the cartridge to move downwards relative to the upper sleeve so as to prevent the hollow needle from exposing out of the sleeve. In the medicament delivery device of the embodiment of the utility model, the hollow needle is used for establishing a tunnel for accommodating the solid implantation medicament on the abdominal wall of a human body, the solid implantation medicament is delivered to the inside close to the needle point of the hollow needle, then the hollow needle is retracted into the device, and the solid implantation medicament stays in the tunnel, so that 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 (9)
1. A medicament delivery device with an automatic guard, 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 lower sleeve and the cartridge; and
an automatic protection device comprising:
the starting buckle is arranged on the lower sleeve and used for limiting the cartridge to move upwards relative to the lower sleeve, wherein 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 lower sleeve under the action of the spring, and the solid implantation medicament is injected out of the hollow needle; and
and the limiting buckle is arranged on the upper sleeve and used for limiting the cartridge to move downwards relative to the upper sleeve so as to prevent the hollow needle from exposing out of the sleeve.
2. The medication delivery device with auto-guard of claim 1 wherein the pushrod assembly comprises a pushrod seat and pushrod coupled to the pushrod seat, a stop clip being provided between the pushrod seat and the upper sleeve for limiting movement of the pushrod seat.
3. A medicament delivery device with automatic protection device according to claim 2, wherein the push rod holder is provided with a locking catch for locking the push rod holder to the upper sleeve.
4. A medicament delivery device with automatic protection device according to claim 3, wherein the locking catch extends obliquely outwards from the push rod seat in the axial direction of the push rod seat.
5. A medicament delivery device with automatic protection device according to claim 4, wherein the upper sleeve of the sleeve is provided with a stop for limiting upward movement of the locking catch.
6. The medication delivery device with auto-guard of claim 2 wherein the pushrod seat has a pushing arm for pushing the actuation clasp, the pushing arm having an outer sloped surface, the actuation clasp having an inner sloped surface that mates with the outer sloped surface of the pushing arm.
7. A medicament delivery device with automatic protection device according to any of claims 1 to 6, wherein the limit catch extends obliquely inwards from the upper sleeve in the axial direction of the sleeve.
8. The drug delivery device with an automatic shielding device according to any one of claims 1 to 6, further comprising a sheath that is sleeved outside the hollow needle.
9. A medicament delivery device with automatic shielding means according to any one 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 |
|---|---|---|---|
| CN202222096627.4U CN219167472U (en) | 2022-08-10 | 2022-08-10 | Medicament delivery device with automatic protection device |
| PCT/CN2023/112125 WO2024032688A1 (en) | 2022-08-10 | 2023-08-10 | Medicament delivery apparatus with automatic protection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222096627.4U CN219167472U (en) | 2022-08-10 | 2022-08-10 | Medicament delivery device with automatic protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219167472U true CN219167472U (en) | 2023-06-13 |
Family
ID=86661698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222096627.4U Active CN219167472U (en) | 2022-08-10 | 2022-08-10 | Medicament delivery device with automatic protection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN219167472U (en) |
| WO (1) | WO2024032688A1 (en) |
Cited By (1)
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795162A (en) * | 1972-02-10 | 1973-08-08 | Philips Nv | INJEKTIE-INRICHTING |
| US6102896A (en) * | 1999-09-08 | 2000-08-15 | Cambridge Biostability Limited | Disposable injector device |
| US20030105430A1 (en) * | 2001-11-30 | 2003-06-05 | Elan Pharma International Limited Wil House | Automatic injector |
| GB0312852D0 (en) * | 2003-06-05 | 2003-07-09 | Owen Mumford Ltd | Improvements relating to syringe firing mechanisms |
| WO2007129324A2 (en) * | 2006-05-09 | 2007-11-15 | Gil Yigal | A disposable injecting device with auto-retraction mechanism |
| CN105228674B (en) * | 2013-03-25 | 2018-04-20 | 蒂莫西.J.亚当 | The syringe of auto retractable |
| CN219167472U (en) * | 2022-08-10 | 2023-06-13 | 泰尔茂医疗产品(杭州)有限公司 | Medicament delivery device with automatic protection device |
| 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 CN202222096627.4U patent/CN219167472U/en active Active
-
2023
- 2023-08-10 WO PCT/CN2023/112125 patent/WO2024032688A1/en unknown
Cited By (1)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024032688A1 (en) | 2024-02-15 |
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