WO2024032688A1 - Medicament delivery apparatus with automatic protection apparatus - Google Patents

Medicament delivery apparatus with automatic protection apparatus Download PDF

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Publication number
WO2024032688A1
WO2024032688A1 PCT/CN2023/112125 CN2023112125W WO2024032688A1 WO 2024032688 A1 WO2024032688 A1 WO 2024032688A1 CN 2023112125 W CN2023112125 W CN 2023112125W WO 2024032688 A1 WO2024032688 A1 WO 2024032688A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
push rod
hollow needle
cartridge
buckle
Prior art date
Application number
PCT/CN2023/112125
Other languages
French (fr)
Chinese (zh)
Inventor
杜天虎
Original Assignee
泰尔茂医疗产品(杭州)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 泰尔茂医疗产品(杭州)有限公司 filed Critical 泰尔茂医疗产品(杭州)有限公司
Publication of WO2024032688A1 publication Critical patent/WO2024032688A1/en

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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
    • 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

Definitions

  • the invention relates to the technical field of medical devices, and in particular to a medicine delivery device with an automatic protection device.
  • Needle injuries are a serious threat to public health and can lead to the spread of diseases, such as HIV or hepatitis, often requiring people to be quarantined for considerable periods of time.
  • diseases such as HIV or hepatitis
  • it may cause psychological and physical trauma to the person, followed by a high degree of damage and serious economic burden. Therefore, cross-infection caused by needlestick injuries is unacceptable.
  • Needle injuries occur throughout the entire life cycle of medical devices. The emphasis on the risk of needle injuries has made the public want various types of safety systems to minimize the possibility of needle injuries by recycling needles or covering needles after use.
  • the general approach is to first use a hollow needle to establish a channel to accommodate the pharmaceuticals in the abdominal wall of the human body, and then transport the pharmaceuticals into the body. There may be cases where the pharmaceuticals cannot be accurately and completely entered into the target location in the body, or the injection You may be injured by needles during and after the procedure.
  • an existing technical solution is to manually push a metal rod out from the inside of a hollow needle so that the top of the metal rod exposes the needle tip for a certain distance.
  • This combination of mechanisms can only protect against axial punctures. It cannot protect against scratches caused by the exposed needle tip, and the surface of the top of the metal rod will also enter the patient's body during the drug implantation process, which will produce blood-borne contamination and may cause infection.
  • the object of the present invention is to provide a medicine delivery device with an automatic protection device, which is used to implant linear solid implant medicine into the patient's body.
  • the medicine delivery device can ensure the return of the hollow needle. Retreat to the inside of the device and prevent accidents such as needle stick injuries caused by accidentally pushing the hollow needle out of the device.
  • a medicine delivery device with an automatic protection device including: a medicine cartridge having a proximal end, a distal end, and a cavity between the proximal end and the distal end for containing a solid implanted medicine.
  • the sleeve sleeved on the cartridge, the sleeve includes an upper sleeve and a lower sleeve connected to each other, the cartridge can slide in the sleeve, a spring is provided between the lower sleeve and the cartridge; and an automatic protection device, It includes: a start buckle, which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve.
  • the push rod assembly pushes the solid implant medicine into the hollow needle
  • the push rod assembly pushes the start buckle.
  • Buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the lower sleeve under the action of the spring, so as to inject the solid implanted medicine out of the hollow needle; and
  • a limit buckle is provided on the upper sleeve, and To limit the downward movement of the medicine cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve.
  • the push rod assembly includes a push rod seat and a push rod connected to the push rod seat.
  • a limiting clip for limiting the movement of the push rod seat is provided between the push rod seat and the upper sleeve.
  • the push rod seat is provided with a locking buckle for locking the push rod seat to the upper sleeve.
  • the locking buckle is tilted outward from the push rod base along the axial direction of the push rod base. diagonal extension.
  • the upper sleeve of the sleeve is provided with a baffle for limiting the upward movement of the locking buckle.
  • the push rod base has a push arm for pushing the starting buckle
  • the pushing arm has an outer inclined surface
  • the starting buckle has an inner inclined surface matching the outer inclined surface of the pushing arm.
  • the limiting buckle extends obliquely inward from the upper sleeve along the axial direction of the sleeve.
  • the medicine delivery device further includes a sheath placed on the outside of the hollow needle.
  • the drug delivery device according to the present invention is mainly used for infusion of long-acting and sustained-release solid preparations.
  • the automatic protection device includes: an activation buckle, which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine When entering the hollow needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the sleeve under the action of the spring to inject the solid implanted medicine out of the hollow needle; and the limiter The buckle is provided on the upper sleeve and is used to limit the downward movement of the cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve.
  • an activation buckle which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine When entering the hollow needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives
  • a tunnel is established in the abdominal wall of the human body through a hollow needle to accommodate the solid implanted drug, and the solid implanted drug is delivered to the inside close to the needle tip of the hollow needle, and then the hollow needle retreats to the device inside, while the solid implanted agent stays in the tunnel, avoiding accidents such as needle stick injuries.
  • the lower sleeve is provided with a limit for limiting the downward movement of the cartridge relative to the sleeve. buckle to prevent the hollow needle from exposing the sleeve, thereby avoiding accidents such as needle stick injuries caused by the operator accidentally pushing the push rod assembly and causing the hollow needle to expose the sleeve.
  • the push rod assembly includes a push rod seat and a push rod connected to the push rod seat.
  • a limiting clip for limiting the movement of the push rod seat is provided between the push rod seat and the upper sleeve. Before use, the movement of the push rod seat is limited by the limiting clip to prevent the solid implant agent from being pushed into the hollow needle due to accidental pushing of the push rod seat.
  • the push rod seat is provided with a locking buckle for locking the push rod seat to the upper sleeve.
  • the push rod seat is locked to the upper sleeve by a locking buckle, thereby realizing the interlocking of the push rod seat and the sleeve.
  • the upper sleeve of the sleeve is provided with a baffle for limiting the upward movement of the locking buckle.
  • Figure 1 shows a schematic diagram of a medicament delivery device according to an embodiment of the present invention, in which the medicament delivery device is in an initial state;
  • Figure 2 shows a cross-sectional view of the medicament delivery device of the embodiment shown in Figure 1;
  • FIG 3 shows a schematic diagram of the use process of the medicine delivery device of the embodiment shown in Figure 1, in which the push rod assembly pushes the activation buckle to release the medicine cartridge;
  • Figure 4 shows a partial enlarged cross-sectional view of the medicine delivery device of the embodiment shown in Figure 3;
  • Figure 5 shows a transverse cross-sectional view of the medicament delivery device of the embodiment shown in Figure 3;
  • Figure 6 shows a usage process of the medicine delivery device of the embodiment shown in Figure 1 Intent, wherein the push rod assembly pushes the activating catch to release the cartridge;
  • Figure 7 shows a schematic diagram of the use process of the medicine delivery device of the embodiment shown in Figure 1, in which the locking buckle limits the downward movement of the medicine cartridge relative to the sleeve;
  • Figure 8 shows a schematic diagram of the use process of the medicine delivery device of the embodiment shown in Figure 1, in which the hollow needle is fully retracted into the sleeve.
  • the medicine delivery device 100 includes a medicine 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 implanted medicament 50 .
  • the hollow needle 20 is fixed to the proximal end 11 of the cartridge 10 and communicates with the chamber 13 .
  • the hollow needle 20 has a needle tube 21 and a needle tip 22.
  • the needle tube 21 is connected with the chamber 13.
  • the needle tip 22 is used to penetrate, for example, the abdominal wall of a human body to establish a tunnel to accommodate the solid implanted medicine 50.
  • the push rod assembly 30 is mounted to the distal end 12 of the cartridge 10 for pushing the solid implanted medicament 50 into the hollow needle 20 within the chamber 13 .
  • the push rod assembly 30 includes a push rod base 31 and a push rod 32 connected to the push rod base 31.
  • a limiting clip 33 is provided between the push rod base 31 and the sleeve 40 for limiting the movement of the push rod base 31.
  • the movement of the push rod base 31 is limited by the limiting clip 33 to prevent the solid implant medicament 50 from being pushed into the hollow needle 20 due to accidental pushing of the push rod base 31 .
  • One end of the push rod 32 is fixed to the center of the push rod seat 31 in a known manner, and the other end of the push rod 32 extends into the chamber 13 of the cartridge 10 to facilitate pushing the solid implanted medicine 50 downward in the chamber 13 move.
  • moving upward means that the cartridge 10 moves within the sleeve 40 toward the push rod assembly.
  • moving downward means that the cartridge 10 moves in the direction of the hollow needle 20 in the sleeve 40, that is, moves away from the push rod assembly 30.
  • the sleeve 40 is sleeved on the outside of the cartridge 10.
  • the sleeve 40 includes an upper sleeve 41 and a lower sleeve 42.
  • the upper sleeve 41 and the lower sleeve 42 can be two separate components, connected to each other in a known manner. Together, they may also be integrally formed by, for example, injection molding.
  • 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.
  • the upper sleeve 41 and the lower sleeve 42 are assembled.
  • the cartridge 10 can slide upward and downward relative to the sleeve 40 in the sleeve 40.
  • a limiting clip 33 is provided between the upper sleeve 41 of the sleeve 40 and the push rod base 31 to limit the movement of the push rod base 31.
  • a spring 60 is provided between the lower sleeve 42 of the sleeve 40 and the cartridge 10. When the cartridge 10 is installed into the sleeve 40, the spring 60 is in a compressed state.
  • the medicine delivery device 100 further includes an automatic protection device 70 .
  • the automatic protection device 70 includes a starting buckle 71 and a limiting buckle 72 .
  • the starting buckle 71 is provided on the lower sleeve 42 and is used to limit the upward movement of the cartridge 10 relative to the lower sleeve 42 .
  • the activation buckle 71 blocks the flange 111 of the proximal end 11 of the cartridge 10 .
  • the push rod seat 31 of the push rod assembly 30 pushes the activation buckle 71 to release the cartridge 10 , so that the cartridge 10 is in the spring 60
  • the hollow needle 20 is driven to move upward relative to the lower sleeve 42
  • 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 .
  • the limiting buckle 72 is provided on the upper sleeve 41 to limit the downward movement of the cartridge 10 relative to the upper sleeve 41 to prevent the hollow needle 20 from exposing the sleeve 40 .
  • the number of activating buckles 71 may be two, three, four or more, and the number of limiting buckles 72 may be two, three, four or more.
  • the buckles 71 and the limiting buckles 72 are respectively arranged symmetrically along the circumferential direction of the sleeve.
  • the push rod seat 31 is provided with a locking buckle 311 for locking the push rod seat 31 to the upper sleeve 41 .
  • the locking buckle 311 is along the axial direction of the push rod seat 31 Extending obliquely upward and outward from the push rod base 31 , the locking buckle 311 may take the form of an elastic arm or an elastic piece formed on the push rod base 31 , for example.
  • the upper sleeve 41 of the sleeve 40 is provided with a baffle 411 that limits the upward movement of the locking buckle 311 .
  • the baffle 411 of the upper sleeve 41 of the sleeve 40 first presses the locking buckle 311 inwards.
  • the locking buckle 311 is located below the baffle 411, the locking The buckle 311 rebounds, and when the thrust force is canceled, the locking buckle 311 cannot move upward due to the existence of the baffle 411 .
  • the push rod base 31 has a push arm 312 for pushing the activation buckle 71
  • the push arm 312 has an outer inclined surface 3121
  • the activation buckle 71 has a push arm 312 .
  • the outer inclined surface 3121 of the arm 312 matches the inner inclined surface 711 to facilitate the pushing arm 312 to push the activation buckle 71 .
  • the push rod base 31 moves downward, the outer inclined surface 3121 of the push arm 312 slides along the inner inclined surface 711 of the activating buckle 71 and gradually opens the activating buckle 71 outward, thereby releasing the cartridge 10 .
  • the limiting buckle 72 extends obliquely upward and inward from the sleeve 40 along the axial direction of the sleeve 40 .
  • the cartridge 10 moves upward in the sleeve 40, the cartridge 10 pushes the limit buckle 72 outward.
  • the limit buckle 72 rebounds to lock the medicine. Barrel 10.
  • the drug delivery device 100 further includes a sheath 80 sheathed on the outside of the hollow needle 20 .
  • the sheath 80 is placed on the outside of the hollow needle 20 to prevent the hollow needle 20 from stabbing the patient or medical staff. The sheath 80 is removed during use.
  • hollow needle 20 when spring 60 is fully released, hollow needle 20 is fully retracted into sleeve 40.
  • the distance between the end of the hollow needle 20 and the end of the lower sleeve 42 of the sleeve 40 is 2 mm to 10 mm.
  • the spring 60 bounces up the cartridge 10, and the cartridge 10 slides along the push rod 32, driving the push rod seat 31 to move upward until the cartridge 10 snaps the limit of the upper sleeve 41 72 opens, as the spring 60 bounces, the locking buckle 311 of the push rod base 31 hits the baffle 411 of the upper sleeve 41, and then the needle tip 22 of the hollow needle 20 retreats into the sleeve 40, thereby achieving The automatic protection of the needle tip 22 is provided.
  • the automatic protection device includes: an activation buckle, which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine When entering the hollow needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the sleeve under the action of the spring to inject the solid implanted medicine out of the hollow needle; and the limiter The buckle is provided on the upper sleeve and is used to limit the downward movement of the cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve.
  • an activation buckle which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine When entering the hollow needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives
  • a tunnel is established in the abdominal wall of the human body through a hollow needle to accommodate the solid implanted drug, and the solid implanted drug is delivered to the inside close to the needle tip of the hollow needle, and then the hollow needle retreats to the device inside, while the solid implanted agent stays in the tunnel, avoiding accidents such as needle stick injuries.
  • the lower sleeve is provided with a limiting buckle for limiting the downward movement of the cartridge relative to the sleeve to prevent the hollow needle from being exposed from the sleeve, thus preventing the operator from accidentally pushing the push rod assembly and causing the hollow needle to be exposed from the sleeve. Accidents such as needle stick injuries may occur.

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  • Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Provided is a medicament delivery apparatus (100) with an automatic protection apparatus (70), which comprises: a medicament cylinder (10), provided with a proximal end (11), a distal end (12), and a chamber (13) for accommodating a solid implant medicament (50); a hollow needle (20), fixed to the proximal end (11) of the medicament cylinder (10) and in communication with the chamber (13); a push rod assembly (30), mounted at the distal end (12) of the medicament cylinder (10) and used for pushing the solid implant medicament (50) into the hollow needle (20) within the chamber (13); and a sleeve (40), sleeving the medicament cylinder (10), the sleeve (40) comprising an upper sleeve (41) and a lower sleeve (42) connected to each other, the medicament cylinder (10) being capable of sliding in the sleeve (40), and a spring (60) being arranged between the lower sleeve (42) and the medicament cylinder (10); and the automatic protection apparatus (70), comprising: a starting buckle (71), used for limiting upward movement of the medicament cylinder (10) relative to the lower sleeve (42); and a limiting buckle (72), used for limiting downward movement of the medicament cylinder (10) relative to the upper sleeve (41), so as to prevent the hollow needle (20) from being exposed out of the sleeve (40). By means of the arrangement of the automatic protection apparatus (70), the hollow needle (20) can return back to the interior of the medicament delivery apparatus (100), and the hollow needle (20) is prevented from being accidentally pushed out of the medicament delivery apparatus (100), thereby effectively avoiding accidents such as needle punching.

Description

带有自动防护装置的药剂输送装置Medication delivery device with automatic protection device
本申请要求于2022年08月10日提交中国专利局、申请号为202222096627.4、发明名称为“带有自动防护装置的药剂输送装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims priority to the Chinese patent application submitted to the China Patent Office on August 10, 2022, with the application number 202222096627.4 and the invention name "Medicine Delivery Device with Automatic Protection Device", the entire content of which is incorporated herein by reference. Applying.
技术领域Technical field
本发明涉及医疗器械技术领域，具体涉及一种带有自动防护装置的药剂输送装置。The invention relates to the technical field of medical devices, and in particular to a medicine delivery device with an automatic protection device.
背景技术Background technique
针头伤害严重威胁公众健康，可能会导致疾病传播，例如HIV或肝炎的传染，人们通常需要隔离相当长的一段时间进行观察。此外，一旦发生***，可能对人产生心理和生理上的创伤，随之带来高度的损害和严重的经济负担，所以由***引起的交叉感染是不能接受的。Needle injuries are a serious threat to public health and can lead to the spread of diseases, such as HIV or hepatitis, often requiring people to be quarantined for considerable periods of time. In addition, once a needlestick injury occurs, it may cause psychological and physical trauma to the person, followed by a high degree of damage and serious economic burden. Therefore, cross-infection caused by needlestick injuries is unacceptable.
针头伤害贯穿了医疗器械整个生命周期，对针头伤害危险性的重视使得公众希望得到各种类型的安全***，在使用之后通过回收针或者遮罩住针头来使针头伤害的可能性降到最低。Needle injuries occur throughout the entire life cycle of medical devices. The emphasis on the risk of needle injuries has made the public want various types of safety systems to minimize the possibility of needle injuries by recycling needles or covering needles after use.
当向人体施用可持续释放的药剂时，一般的做法是先用中空针在人体腹壁建立一个容纳药剂的通道，然后将药剂输送到体内，可能存在药剂不能准确、完整输入体内目标位置，或者注射过程中以及完毕后可能被针头刺伤等问题。When administering sustained-release pharmaceuticals to the human body, the general approach is to first use a hollow needle to establish a channel to accommodate the pharmaceuticals in the abdominal wall of the human body, and then transport the pharmaceuticals into the body. There may be cases where the pharmaceuticals cannot be accurately and completely entered into the target location in the body, or the injection You may be injured by needles during and after the procedure.
例如，现有的一种技术方案是通过手动的方式将一根金属杆从中空针的内部顶出，使金属杆的顶端露出针尖一段距离，这种机构的组合只能防护来自轴向的刺伤，对于暴露的针尖横向产生的划伤起不到防护作用，而且在药剂植入过程中金属杆的顶端的表面也会进入患者体内，会产生血源性污染，并可能引起传染。For example, an existing technical solution is to manually push a metal rod out from the inside of a hollow needle so that the top of the metal rod exposes the needle tip for a certain distance. This combination of mechanisms can only protect against axial punctures. It cannot protect against scratches caused by the exposed needle tip, and the surface of the top of the metal rod will also enter the patient's body during the drug implantation process, which will produce blood-borne contamination and may cause infection.
又例如，另一种技术方案是中国发明专利CN01805275.4提出 的注射器的自动操作安全护套***，其通过复杂的机构配合，在穿刺完成后，将注射装置的外壳向前顶出，达到遮盖针尖的效果。但是，用户的手指如果没有放在正确的位置，就会阻挡外壳卡扣的变形，从而可能会导致机构启动失败。For another example, another technical solution is proposed by Chinese invention patent CN01805275.4 The automatic operating safety sheath system of the syringe uses a complex mechanism to push the shell of the injection device forward after the puncture is completed to cover the needle tip. However, if the user's fingers are not placed in the correct position, they will block the deformation of the housing buckle, which may cause the mechanism to fail to start.
发明内容Contents of the invention
有鉴于此，本发明的目标是提供一种带有自动防护装置的药剂输送装置，其用于将线状的固体植入药剂植入到患者的身体内，该药剂输送装置能够确保中空针回退到装置内部，并防止由于意外将中空针推出装置，而造成***等事故的发生。In view of this, the object of the present invention is to provide a medicine delivery device with an automatic protection device, which is used to implant linear solid implant medicine into the patient's body. The medicine delivery device can ensure the return of the hollow needle. Retreat to the inside of the device and prevent accidents such as needle stick injuries caused by accidentally pushing the hollow needle out of the device.
根据本发明的实施例，提供了一种带有自动防护装置的药剂输送装置，包括：药筒，具有近端、远端和位于近端和远端之间的用于容纳固体植入药剂的腔室；中空针，固定到药筒的近端，并与腔室相连通；推杆组件，安装到药筒的远端，用于在腔室内推动固体植入药剂进入中空针；以及套筒，套设于药筒上，所述套筒包括相互连接的上套筒和下套筒，药筒能够在套筒内滑动，下套筒和药筒之间设有弹簧；以及自动防护装置，包括：启动卡扣，设置于下套筒上，用于限制药筒相对于下套筒向上移动，其中，当推杆组件将固体植入药剂推入中空针内时，推杆组件推动启动卡扣以释放药筒，使得药筒在弹簧的作用下带动中空针相对于下套筒向上移动，以将固体植入药剂注射出中空针；以及限位卡扣，设置于上套筒上，用于限制药筒相对于上套筒向下移动，以防止中空针露出套筒。According to an embodiment of the present invention, a medicine delivery device with an automatic protection device is provided, including: a medicine cartridge having a proximal end, a distal end, and a cavity between the proximal end and the distal end for containing a solid implanted medicine. the chamber; the hollow needle, which is fixed to the proximal end of the cartridge and communicates with the chamber; the push rod assembly, which is mounted to the distal end of the cartridge and is used to push the solid implantable agent into the hollow needle in the chamber; and the sleeve , sleeved on the cartridge, the sleeve includes an upper sleeve and a lower sleeve connected to each other, the cartridge can slide in the sleeve, a spring is provided between the lower sleeve and the cartridge; and an automatic protection device, It includes: a start buckle, which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve. When the push rod assembly pushes the solid implant medicine into the hollow needle, the push rod assembly pushes the start buckle. Buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the lower sleeve under the action of the spring, so as to inject the solid implanted medicine out of the hollow needle; and a limit buckle is provided on the upper sleeve, and To limit the downward movement of the medicine cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve.
进一步地，推杆组件包括推杆座和连接到推杆座的推杆，推杆座和上套筒之间设有用于限制推杆座移动的限位夹。Further, the push rod assembly includes a push rod seat and a push rod connected to the push rod seat. A limiting clip for limiting the movement of the push rod seat is provided between the push rod seat and the upper sleeve.
进一步地，推杆座设有用于将推杆座锁定到上套筒的锁定卡扣。Further, the push rod seat is provided with a locking buckle for locking the push rod seat to the upper sleeve.
进一步地，锁定卡扣沿着推杆座的轴向方向从推杆座向外倾 斜延伸。Further, the locking buckle is tilted outward from the push rod base along the axial direction of the push rod base. diagonal extension.
进一步地，套筒的上套筒设有用于限制锁定卡扣向上移动的挡板。Further, the upper sleeve of the sleeve is provided with a baffle for limiting the upward movement of the locking buckle.
进一步地，推杆座具有用于推动启动卡扣的推动臂，推动臂具有外倾斜表面，启动卡扣具有与推动臂的外倾斜表面相配合的内倾斜表面。Further, the push rod base has a push arm for pushing the starting buckle, the pushing arm has an outer inclined surface, and the starting buckle has an inner inclined surface matching the outer inclined surface of the pushing arm.
进一步地，限位卡扣沿着套筒的轴向方向从上套筒向内倾斜延伸。Further, the limiting buckle extends obliquely inward from the upper sleeve along the axial direction of the sleeve.
进一步地，药剂输送装置还包括套设于中空针的外侧的护套。Further, the medicine delivery device further includes a sheath placed on the outside of the hollow needle.
进一步地，当弹簧完全释放时，中空针完全缩回套筒内。Further, when the spring is fully released, the hollow needle is fully retracted into the sleeve.
在本文中，“向上移动”是指药筒在套筒内朝着推杆组件的方向移动，“向下移动”是指药筒在套筒内朝着中空针的方向移动。In this article, “moving upward” refers to the movement of the cartridge within the sleeve toward the push rod assembly, and “moving downward” refers to the movement of the cartridge within the sleeve toward the hollow needle.
根据本发明的药剂输送装置主要用于输注长效缓释的固体制剂。The drug delivery device according to the present invention is mainly used for infusion of long-acting and sustained-release solid preparations.
与现有技术相比，本发明的实施例的技术方案具有以下优点：Compared with the existing technology, the technical solutions of the embodiments of the present invention have the following advantages:
根据本发明的实施例中，自动防护装置，包括：启动卡扣，设置于下套筒上，用于限制药筒相对于下套筒向上移动，其中，当推杆组件将固体植入药剂推入中空针内时，推杆组件推动启动卡扣以释放药筒，使得药筒在弹簧的作用下带动中空针相对于套筒向上移动，以将固体植入药剂注射出中空针；以及限位卡扣，设置于上套筒上，用于限制药筒相对于上套筒向下移动，以防止中空针露出套筒。在本发明的实施例的药剂输送装置中，通过中空针在人体腹壁建立一个容纳固体植入药剂的隧道，将固体植入药剂输送到靠近中空针的针尖的内部，然后中空针回退到装置内部，而固体植入药剂停留在隧道内，避免了发生***等事故。According to an embodiment of the present invention, the automatic protection device includes: an activation buckle, which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine When entering the hollow needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the sleeve under the action of the spring to inject the solid implanted medicine out of the hollow needle; and the limiter The buckle is provided on the upper sleeve and is used to limit the downward movement of the cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve. In the drug delivery device of the embodiment of the present invention, a tunnel is established in the abdominal wall of the human body through a hollow needle to accommodate the solid implanted drug, and the solid implanted drug is delivered to the inside close to the needle tip of the hollow needle, and then the hollow needle retreats to the device inside, while the solid implanted agent stays in the tunnel, avoiding accidents such as needle stick injuries.
而且，下套筒设有用于限制药筒相对于套筒向下移动的限位 卡扣，以防止中空针露出套筒，从而避免了操作人员因不小心推动推杆组件而使得中空针露出套筒发生***等事故。Moreover, the lower sleeve is provided with a limit for limiting the downward movement of the cartridge relative to the sleeve. buckle to prevent the hollow needle from exposing the sleeve, thereby avoiding accidents such as needle stick injuries caused by the operator accidentally pushing the push rod assembly and causing the hollow needle to expose the sleeve.
进一步地，推杆组件包括推杆座和连接到推杆座的推杆，推杆座和上套筒之间设有用于限制推杆座移动的限位夹。在未使用前，通过限位夹限制推杆座的移动，防止由于意外推动推杆座而将固体植入药剂推入中空针。Further, the push rod assembly includes a push rod seat and a push rod connected to the push rod seat. A limiting clip for limiting the movement of the push rod seat is provided between the push rod seat and the upper sleeve. Before use, the movement of the push rod seat is limited by the limiting clip to prevent the solid implant agent from being pushed into the hollow needle due to accidental pushing of the push rod seat.
进一步地，推杆座设有用于将推杆座锁定到上套筒的锁定卡扣。通过锁定卡扣将推杆座锁定到上套筒，实现了推杆座和套筒的互锁。Further, the push rod seat is provided with a locking buckle for locking the push rod seat to the upper sleeve. The push rod seat is locked to the upper sleeve by a locking buckle, thereby realizing the interlocking of the push rod seat and the sleeve.
进一步地，套筒的上套筒设有用于限制锁定卡扣向上移动的挡板。当推杆座的锁定卡扣碰到上套筒的挡板，中空针的针尖回退到套筒内，从而实现了针尖的自动防护。Further, the upper sleeve of the sleeve is provided with a baffle for limiting the upward movement of the locking buckle. When the locking buckle of the push rod seat hits the baffle of the upper sleeve, the needle tip of the hollow needle retreats into the sleeve, thereby realizing automatic protection of the needle tip.
附图说明Description of drawings
本发明的其它特征以及优点将通过以下结合附图详细描述的可选实施方式更好地理解，附图中相同的标记表示相同或相似的部件，其中：Other features and advantages of the present invention will be better understood from the following detailed description of alternative embodiments in conjunction with the accompanying drawings, in which like reference numerals represent the same or similar parts, in which:
图1示出了根据本发明的一个实施例的药剂输送装置的示意图，其中药剂输送装置处于初始状态；Figure 1 shows a schematic diagram of a medicament delivery device according to an embodiment of the present invention, in which the medicament delivery device is in an initial state;
图2示出了图1中所示实施例的药剂输送装置的剖视图；Figure 2 shows a cross-sectional view of the medicament delivery device of the embodiment shown in Figure 1;
图3示出了图1中所示实施例的药剂输送装置的使用过程示意图，其中推杆组件推动启动卡扣以释放药筒；Figure 3 shows a schematic diagram of the use process of the medicine delivery device of the embodiment shown in Figure 1, in which the push rod assembly pushes the activation buckle to release the medicine cartridge;
图4示出了图3中所示实施例的药剂输送装置的局部放大剖视图；Figure 4 shows a partial enlarged cross-sectional view of the medicine delivery device of the embodiment shown in Figure 3;
图5示出了图3中所示实施例的药剂输送装置的横向剖视图；Figure 5 shows a transverse cross-sectional view of the medicament delivery device of the embodiment shown in Figure 3;
图6示出了图1中所示实施例的药剂输送装置的使用过程示 意图，其中推杆组件推动启动卡扣以释放药筒；Figure 6 shows a usage process of the medicine delivery device of the embodiment shown in Figure 1 Intent, wherein the push rod assembly pushes the activating catch to release the cartridge;
图7示出了图1中所示实施例的药剂输送装置的使用过程示意图，其中锁定卡扣限制药筒相对于套筒向下移动；Figure 7 shows a schematic diagram of the use process of the medicine delivery device of the embodiment shown in Figure 1, in which the locking buckle limits the downward movement of the medicine cartridge relative to the sleeve;
图8示出了图1中所示实施例的药剂输送装置的使用过程示意图，其中中空针完全缩回到套筒内。Figure 8 shows a schematic diagram of the use process of the medicine delivery device of the embodiment shown in Figure 1, in which the hollow needle is fully retracted into the sleeve.
具体实施方式Detailed ways
下面详细讨论实施例的实施和使用。应当理解，所讨论的具体实施例仅仅示范性地说明实施和使用本发明的特定方式，而非限制本发明的范围。在描述时各个部件的结构位置例如上、下、顶部、底部等方向的表述不是绝对的，而是相对的。当各个部件如图中所示布置时，这些方向表述是恰当的，但图中各个部件的位置改变时，这些方向表述也相应改变。The implementation and use of the embodiments are discussed in detail below. It should be understood that the specific embodiments discussed are merely illustrative of specific ways to make and use the invention and do not limit the scope of the invention. When describing, the structural position of each component, such as up, down, top, bottom, etc., are not absolute but relative. These directional representations are appropriate when the components are arranged as shown in the figures, but will change when the position of the components in the figures is changed.
如图1到图2所示，药剂输送装置100包括药筒10、中空针20、推杆组件30以及套筒40。药筒10具有近端11、远端12和位于近端11和远端12之间的用于容纳固体植入药剂50的腔室13。中空针20固定到药筒10的近端11，并与腔室13相连通。中空针20具有针管21和针尖22，针管21与腔室13相连通，针尖22用于刺入例如人体腹壁，以便于建立容纳固体植入药剂50的隧道。As shown in FIGS. 1 to 2 , the medicine delivery device 100 includes a medicine 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 implanted medicament 50 . The hollow needle 20 is fixed to the proximal end 11 of the cartridge 10 and communicates with the chamber 13 . The hollow needle 20 has a needle tube 21 and a needle tip 22. The needle tube 21 is connected with the chamber 13. The needle tip 22 is used to penetrate, for example, the abdominal wall of a human body to establish a tunnel to accommodate the solid implanted medicine 50.
推杆组件30安装到药筒10的远端12，用于在腔室13内推动固体植入药剂50进入中空针20。推杆组件30包括推杆座31和连接到推杆座31的推杆32，推杆座31和套筒40之间设有用于限制推杆座31移动的限位夹33。在未使用前，通过限位夹33限制推杆座31的移动，防止由于意外推动推杆座31而将固体植入药剂50推入中空针20。推杆32的一端通过已知的方式固定到推杆座31的中心，推杆32的另一端伸入药筒10的腔室13内，以便于推动固体植入药剂50在腔室13内向下移动。The push rod assembly 30 is mounted to the distal end 12 of the cartridge 10 for pushing the solid implanted medicament 50 into the hollow needle 20 within the chamber 13 . The push rod assembly 30 includes a push rod base 31 and a push rod 32 connected to the push rod base 31. A limiting clip 33 is provided between the push rod base 31 and the sleeve 40 for limiting the movement of the push rod base 31. Before use, the movement of the push rod base 31 is limited by the limiting clip 33 to prevent the solid implant medicament 50 from being pushed into the hollow needle 20 due to accidental pushing of the push rod base 31 . One end of the push rod 32 is fixed to the center of the push rod seat 31 in a known manner, and the other end of the push rod 32 extends into the chamber 13 of the cartridge 10 to facilitate pushing the solid implanted medicine 50 downward in the chamber 13 move.
本文中，“向上移动”是指药筒10在套筒40内朝着推杆组件 30的方向移动，“向下移动”是指药筒10在套筒40内朝着中空针20的方向移动，即远离推杆组件30的方向移动。As used herein, "moving upward" means that the cartridge 10 moves within the sleeve 40 toward the push rod assembly. 30, “moving downward” means that the cartridge 10 moves in the direction of the hollow needle 20 in the sleeve 40, that is, moves away from the push rod assembly 30.
套筒40套设于药筒10的外侧，套筒40包括上套筒41和下套筒42，上套筒41和下套筒42可以是两个单独的部件，通过已知方式相互连接在一起，也可以是通过例如注塑成型一体形成。例如，在上套筒41的外周上设有两个对称的凹槽，在下套筒42的外周上设有两个对称的凸起，通过将下套筒42的凸起卡扣到对应的凹槽内，实现了上套筒41和下套筒42的组装。药筒10能够在套筒40内相对于套筒40向上和向下滑动，套筒40的上套筒41和推杆座31之间设有用于限制推杆座31移动的限位夹33，套筒40的下套筒42和药筒10之间设有弹簧60，当药筒10安装到套筒40内时，弹簧60处于压缩状态。The sleeve 40 is sleeved on the outside of the cartridge 10. The sleeve 40 includes an upper sleeve 41 and a lower sleeve 42. The upper sleeve 41 and the lower sleeve 42 can be two separate components, connected to each other in a known manner. Together, they may also be integrally formed by, for example, injection molding. 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. By snapping the protrusions of the lower sleeve 42 into the corresponding recesses, In the groove, the upper sleeve 41 and the lower sleeve 42 are assembled. The cartridge 10 can slide upward and downward relative to the sleeve 40 in the sleeve 40. A limiting clip 33 is provided between the upper sleeve 41 of the sleeve 40 and the push rod base 31 to limit the movement of the push rod base 31. A spring 60 is provided between the lower sleeve 42 of the sleeve 40 and the cartridge 10. When the cartridge 10 is installed into the sleeve 40, the spring 60 is in a compressed state.
结合图3到图5中所示，药剂输送装置100还包括自动防护装置70。自动防护装置70包括启动卡扣71和限位卡扣72，启动卡扣71设置于下套筒42上，用于限制药筒10相对于下套筒42向上移动。在初始状态下，启动卡扣71卡住药筒10的近端11的凸缘111。当推杆组件30的推杆31将固体植入药剂50推入中空针20内时，推杆组件30的推杆座31推动启动卡扣71以释放药筒10，使得药筒10在弹簧60的作用下带动中空针20相对于下套筒42向上移动，而推杆组件30的推杆32推动固体植入药剂50，以将固体植入药剂50注射出中空针20。限位卡扣72设置于上套筒41上，用于限制药筒10相对于上套筒41向下移动，以防止中空针20露出套筒40。在一些实施例中，启动卡扣71的数目可以是两个、三个、四个或多个，限位卡扣72的数目可以是两个、三个、四个或多个，这些启动卡扣71和限位卡扣72分别沿着套筒的圆周方向对称地布置。As shown in FIGS. 3 to 5 , the medicine delivery device 100 further includes an automatic protection device 70 . The automatic protection device 70 includes a starting buckle 71 and a limiting buckle 72 . The starting buckle 71 is provided on the lower sleeve 42 and is used to limit the upward movement of the cartridge 10 relative to the lower sleeve 42 . In the initial state, the activation buckle 71 blocks 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 implanted medicine 50 into the hollow needle 20 , the push rod seat 31 of the push rod assembly 30 pushes the activation buckle 71 to release the cartridge 10 , so that the cartridge 10 is in the spring 60 The hollow needle 20 is driven to move upward relative to the lower sleeve 42 , 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 . The limiting buckle 72 is provided on the upper sleeve 41 to limit the 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 activating buckles 71 may be two, three, four or more, and the number of limiting buckles 72 may be two, three, four or more. These activating buckles The buckles 71 and the limiting buckles 72 are respectively arranged symmetrically along the circumferential direction of the sleeve.
结合图6中所示，推杆座31设有用于将推杆座31锁定到上套筒41的锁定卡扣311，锁定卡扣311沿着推杆座31的轴向方向 从推杆座31向上向外倾斜延伸，锁定卡扣311可以采用例如形成在推杆座31上的弹性臂或弹性片的形式。As shown in FIG. 6 , the push rod seat 31 is provided with a locking buckle 311 for locking the push rod seat 31 to the upper sleeve 41 . The locking buckle 311 is along the axial direction of the push rod seat 31 Extending obliquely upward and outward from the push rod base 31 , the locking buckle 311 may take the form of an elastic arm or an elastic piece formed on the push rod base 31 , for example.
结合图7到图8中所示，套筒40的上套筒41设有限制锁定卡扣311向上移动的挡板411。当推动推杆座31在套筒40内向下移动时，套筒40的上套筒41的挡板411先向内挤压锁定卡扣311，当锁定卡扣311位于挡板411以下时，锁定卡扣311弹回，当推力取消时，锁定卡扣311由于挡板411的存在而不能向上移动。As shown in FIGS. 7 to 8 , the upper sleeve 41 of the sleeve 40 is provided with a baffle 411 that limits the upward movement of the locking buckle 311 . When the push rod seat 31 is pushed downward in the sleeve 40, the baffle 411 of the upper sleeve 41 of the sleeve 40 first presses the locking buckle 311 inwards. When the locking buckle 311 is located below the baffle 411, the locking The buckle 311 rebounds, and when the thrust force is canceled, the locking buckle 311 cannot move upward due to the existence of the baffle 411 .
再结合图4和图5中所示，在一些实施例中，推杆座31具有用于推动启动卡扣71的推动臂312，推动臂312具有外倾斜表面3121，启动卡扣71具有与推动臂312的外倾斜表面3121相配合的内倾斜表面711，以便于推动臂312推动启动卡扣71。当推杆座31向下移动时，推动臂312的外倾斜表面3121沿着启动卡扣71的内倾斜表面711滑动，逐渐向外撑开启动卡扣71，从而释放药筒10。As shown in FIGS. 4 and 5 , in some embodiments, the push rod base 31 has a push arm 312 for pushing the activation buckle 71 , the push arm 312 has an outer inclined surface 3121 , and the activation buckle 71 has a push arm 312 . The outer inclined surface 3121 of the arm 312 matches the inner inclined surface 711 to facilitate the pushing arm 312 to push the activation buckle 71 . When the push rod base 31 moves downward, the outer inclined surface 3121 of the push arm 312 slides along the inner inclined surface 711 of the activating buckle 71 and gradually opens the activating buckle 71 outward, thereby releasing the cartridge 10 .
在一些实施例中，限位卡扣72沿着套筒40的轴向方向从套筒40向上向内倾斜延伸。当药筒10在套筒40内向上移动时，药筒10向外推动限位卡扣72，当药筒10移动到限位卡扣72上方时，限位卡扣72弹回，以锁定药筒10。In some embodiments, the limiting buckle 72 extends obliquely upward and inward from the sleeve 40 along the axial direction of the sleeve 40 . When the cartridge 10 moves upward in the sleeve 40, the cartridge 10 pushes the limit buckle 72 outward. When the cartridge 10 moves above the limit buckle 72, the limit buckle 72 rebounds to lock the medicine. Barrel 10.
在一些实施例中，药剂输送装置100还包括套设于中空针20的外侧的护套80。在使用前，护套80套设于中空针20的外侧，防止中空针20刺伤患者或者医护人员，在使用时将护套80取下。In some embodiments, the drug delivery device 100 further includes a sheath 80 sheathed on the outside of the hollow needle 20 . Before use, the sheath 80 is placed on the outside of the hollow needle 20 to prevent the hollow needle 20 from stabbing the patient or medical staff. The sheath 80 is removed during use.
在一些实施例中，当弹簧60完全释放时，中空针20完全缩回套筒40内。例如，当中空针20完全缩回套筒40的下套筒42内时，中空针20的末端与套筒40的下套筒42的末端之间的距离为2mm～10mm。In some embodiments, when spring 60 is fully released, hollow needle 20 is fully retracted into sleeve 40. For example, when the hollow needle 20 is completely retracted into the lower sleeve 42 of the sleeve 40, the distance between the end of the hollow needle 20 and the end of the lower sleeve 42 of the sleeve 40 is 2 mm to 10 mm.
再结合图5到图8中所示，用户注射时，先将限位夹33和保护套80拔下，然后中空针20的针尖22穿刺患者皮肤刺入皮下， 接着推动推杆座31，推杆座31的限位卡扣311先进入上套筒41内，推杆座31带动推杆32将固体植入药剂50输送到中空针20内靠近针尖22的位置，同时，下套筒42的启动卡扣71被推杆座31的推动臂312撑开，实现对药筒10的解锁。As shown in Figures 5 to 8, when the user injects, he first removes the limiting clip 33 and the protective cover 80, and then the needle tip 22 of the hollow needle 20 pierces the patient's skin and penetrates into the subcutaneous layer. Then push the push rod seat 31, the limit buckle 311 of the push rod seat 31 first enters the upper sleeve 41, the push rod seat 31 drives the push rod 32 to transport the solid implant medicine 50 to the position close to the needle tip 22 in the hollow needle 20 , at the same time, the activation buckle 71 of the lower sleeve 42 is opened by the push arm 312 of the push rod base 31, thereby unlocking the cartridge 10.
启动卡扣71撑开的同时，弹簧60将药筒10弹起，药筒10顺着推杆32滑动，带动推杆座31向上移动，直到药筒10将上套筒41的限位卡扣72撑开，随着弹簧60的弹开，推杆座31的锁定卡扣311碰到上套筒41的挡板411，自此中空针20的针尖22回退到套筒40内，从而实现了针尖22的自动防护。When the buckle 71 is opened, the spring 60 bounces up the cartridge 10, and the cartridge 10 slides along the push rod 32, driving the push rod seat 31 to move upward until the cartridge 10 snaps the limit of the upper sleeve 41 72 opens, as the spring 60 bounces, the locking buckle 311 of the push rod base 31 hits the baffle 411 of the upper sleeve 41, and then the needle tip 22 of the hollow needle 20 retreats into the sleeve 40, thereby achieving The automatic protection of the needle tip 22 is provided.
根据本发明的实施例中，自动防护装置，包括：启动卡扣，设置于下套筒上，用于限制药筒相对于下套筒向上移动，其中，当推杆组件将固体植入药剂推入中空针内时，推杆组件推动启动卡扣以释放药筒，使得药筒在弹簧的作用下带动中空针相对于套筒向上移动，以将固体植入药剂注射出中空针；以及限位卡扣，设置于上套筒上，用于限制药筒相对于上套筒向下移动，以防止中空针露出套筒。在本发明的实施例的药剂输送装置中，通过中空针在人体腹壁建立一个容纳固体植入药剂的隧道，将固体植入药剂输送到靠近中空针的针尖的内部，然后中空针回退到装置内部，而固体植入药剂停留在隧道内，避免了发生***等事故。According to an embodiment of the present invention, the automatic protection device includes: an activation buckle, which is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine When entering the hollow needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the sleeve under the action of the spring to inject the solid implanted medicine out of the hollow needle; and the limiter The buckle is provided on the upper sleeve and is used to limit the downward movement of the cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve. In the drug delivery device of the embodiment of the present invention, a tunnel is established in the abdominal wall of the human body through a hollow needle to accommodate the solid implanted drug, and the solid implanted drug is delivered to the inside close to the needle tip of the hollow needle, and then the hollow needle retreats to the device inside, while the solid implanted agent stays in the tunnel, avoiding accidents such as needle stick injuries.
而且，下套筒设有用于限制药筒相对于套筒向下移动的限位卡扣，以防止中空针露出套筒，从而避免了操作人员因不小心推动推杆组件而使得中空针露出套筒发生***等事故。Moreover, the lower sleeve is provided with a limiting buckle for limiting the downward movement of the cartridge relative to the sleeve to prevent the hollow needle from being exposed from the sleeve, thus preventing the operator from accidentally pushing the push rod assembly and causing the hollow needle to be exposed from the sleeve. Accidents such as needle stick injuries may occur.
以上已揭示本发明的技术内容及技术特点，然而可以理解，在本发明的创作思想下，本领域的技术人员可以对上述公开的构思作各种变化和改进，但都属于本发明的保护范围。上述实施方式的描述是例示性的而不是限制性的，本发明的保护范围由权利要求所确定。 The technical content and technical features of the present invention have been disclosed above. However, it can be understood that under the creative thinking of the present invention, those skilled in the art can make various changes and improvements to the above disclosed concepts, but they all fall within the protection scope of the present invention. . The description of the above embodiments is illustrative rather than restrictive, and the scope of protection of the present invention is determined by the claims.

Claims (9)

  1. 一种带有自动防护装置的药剂输送装置，其特征在于，包括：A medicine delivery device with an automatic protection device, which is characterized in that it includes:
    药筒，具有近端、远端和位于所述近端和所述远端之间的用于容纳固体植入药剂的腔室；a cartridge having a proximal end, a distal end, and a chamber located between the proximal end and the distal end for containing a solid implanted medicament;
    中空针，固定到所述药筒的近端，并与所述腔室相连通；a hollow needle fixed to the proximal end of the cartridge and communicated with the chamber;
    推杆组件，安装到所述药筒的远端，用于在所述腔室内推动所述固体植入药剂进入所述中空针；以及a push rod assembly mounted to the distal end of the cartridge for pushing the solid implanted agent into the hollow needle within the chamber; and
    套筒，套设于所述药筒上，所述套筒包括相互连接的上套筒和下套筒，所述药筒能够在所述套筒内滑动，所述下套筒和所述药筒之间设有弹簧；以及A sleeve is set on the medicine cartridge. The sleeve includes an upper sleeve and a lower sleeve that are connected to each other. The medicine cartridge can slide in the sleeve. The lower sleeve and the medicine cartridge are There is a spring between the barrels; and
    自动防护装置，包括：Automatic protective devices, including:
    启动卡扣，设置于所述下套筒上，用于限制所述药筒相对于所述下套筒向上移动，其中，当所述推杆组件将所述固体植入药剂推入所述中空针内时，所述推杆组件推动所述启动卡扣以释放所述药筒，使得所述药筒在所述弹簧的作用下带动所述中空针相对于所述下套筒向上移动，以将所述固体植入药剂注射出所述中空针；以及A start buckle is provided on the lower sleeve and is used to limit the upward movement of the medicine cartridge relative to the lower sleeve, wherein when the push rod assembly pushes the solid implanted medicine into the hollow When the needle is inserted into the needle, the push rod assembly pushes the activation buckle to release the cartridge, so that the cartridge drives the hollow needle to move upward relative to the lower sleeve under the action of the spring. Injecting the solid implant agent out of the hollow needle; and
    限位卡扣，设置于所述上套筒上，用于限制所述药筒相对于所述上套筒向下移动，以防止所述中空针露出所述套筒。A limiting buckle is provided on the upper sleeve and is used to limit the downward movement of the medicine cartridge relative to the upper sleeve to prevent the hollow needle from exposing the sleeve.
  2. 根据权利要求1所述的带有自动防护装置的药剂输送装置，其特征在于，所述推杆组件包括推杆座和连接到所述推杆座的推杆，所述推杆座和所述上套筒之间设有用于限制所述推杆座移动的限位夹。The medicine delivery device with automatic protection device according to claim 1, wherein the push rod assembly includes a push rod base and a push rod connected to the push rod base, and the push rod base and the push rod base are There is a limiting clip between the upper sleeves for limiting the movement of the push rod seat.
  3. 根据权利要求2所述的带有自动防护装置的药剂输送装置，其特征在于，所述推杆座设有用于将所述推杆座锁定到所述 上套筒的锁定卡扣。The medicine delivery device with an automatic protection device according to claim 2, wherein the push rod seat is provided with a device for locking the push rod seat to the Locking catch on the upper sleeve.
  4. 根据权利要求3所述的带有自动防护装置的药剂输送装置，其特征在于，所述锁定卡扣沿着所述推杆座的轴向方向从所述推杆座向外倾斜延伸。The medicine delivery device with an automatic protection device according to claim 3, wherein the locking buckle extends obliquely outward from the push rod base along the axial direction of the push rod base.
  5. 根据权利要求4所述的带有自动防护装置的药剂输送装置，其特征在于，所述套筒的所述上套筒设有用于限制所述锁定卡扣向上移动的挡板。The medicine delivery device with an automatic protection device according to claim 4, wherein the upper sleeve of the sleeve is provided with a baffle for restricting the upward movement of the locking buckle.
  6. 根据权利要求2所述的带有自动防护装置的药剂输送装置，其特征在于，所述推杆座具有用于推动所述启动卡扣的推动臂，所述推动臂具有外倾斜表面，所述启动卡扣具有与所述推动臂的所述外倾斜表面相配合的内倾斜表面。The medicine delivery device with automatic protection device according to claim 2, characterized in that the push rod base has a push arm for pushing the activation buckle, the push arm has an outer inclined surface, and the The activation catch has an inner sloped surface that mates with the outer sloped surface of the push arm.
  7. 根据权利要求1到6中任一项所述的带有自动防护装置的药剂输送装置，其特征在于，所述限位卡扣沿着所述套筒的轴向方向从所述上套筒向内倾斜延伸。The medicine delivery device with an automatic protection device according to any one of claims 1 to 6, characterized in that the limiting buckle moves from the upper sleeve to the sleeve along the axial direction of the sleeve. Inward sloping extension.
  8. 根据权利要求1到6中任一项所述的带有自动防护装置的药剂输送装置，其特征在于，所述药剂输送装置还包括套设于所述中空针的外侧的护套。The medicine delivery device with an automatic protection device according to any one of claims 1 to 6, characterized in that the medicine delivery device further includes a sheath placed on the outside of the hollow needle.
  9. 根据权利要求1到6中任一项所述的带有自动防护装置的药剂输送装置，其特征在于，当所述弹簧完全释放时，所述中空针完全缩回所述套筒内。 The medicine delivery device with an automatic protection device according to any one of claims 1 to 6, characterized in that when the spring is completely released, the hollow needle is completely retracted into the sleeve.
PCT/CN2023/112125 2022-08-10 2023-08-10 Medicament delivery apparatus with automatic protection apparatus WO2024032688A1 (en)

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Publication number Priority date Publication date Assignee Title
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

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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
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797489A (en) * 1972-02-10 1974-03-19 Survival Technology Hypodermic injection device with shock absorbing spring
US6102896A (en) * 1999-09-08 2000-08-15 Cambridge Biostability Limited Disposable injector device
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US20060167412A1 (en) * 2003-06-05 2006-07-27 Jeremy Marshall Syringe firing mechanism
WO2007129324A2 (en) * 2006-05-09 2007-11-15 Gil Yigal A disposable injecting device with auto-retraction mechanism
CN105228674A (en) * 2013-03-25 2016-01-06 蒂莫西.J.亚当 The syringe of auto retractable
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
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

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