WO2023124044A1 - 一种便于识别感应压力的注射装置 - Google Patents

一种便于识别感应压力的注射装置 Download PDF

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WO2023124044A1
WO2023124044A1 PCT/CN2022/108057 CN2022108057W WO2023124044A1 WO 2023124044 A1 WO2023124044 A1 WO 2023124044A1 CN 2022108057 W CN2022108057 W CN 2022108057W WO 2023124044 A1 WO2023124044 A1 WO 2023124044A1
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cavity
vesicle
injection device
push rod
induced pressure
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French (fr)
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张洪杰
张策
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Berpu Medical Technology Co Ltd
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Berpu Medical Technology Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/48—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 having means for varying, regulating, indicating or limiting injection pressure

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  • the invention relates to the technical field of medical injectors, in particular to an injection device that is convenient for identifying induced pressure, and in particular to its mechanical connection structure.
  • Vesicles are made of elastic or flexible material that is impermeable to water and gas.
  • the branch pipe is arranged on the side wall of the front section of the device body and communicates with the inner cavity of the device body; as an optimization, the branch pipe is arranged on the side wall of the mouth of the device body and communicates with the inner cavity of the device body; as an optimization, the branch pipe is arranged on the needle head On the side wall of the root and communicate with the inner cavity of the needle.
  • the push rod moves backward when the vesicle becomes deflated, so it cannot be accurately determined whether the vesicle becomes deflated due to the negative pressure after the puncture is in place or the vesicle becomes deflated due to the push rod moving backward. deflated.
  • the "epidural puncture syringes" on the market are all vesicle external structures, not only the appearance is not beautiful, but the vesicles are exposed to various medical sharp instruments, which can easily cause accidental injury and puncture, resulting in surgical failure.
  • the present invention provides an injection device that is convenient for identifying the sensed pressure, so as to solve the problems raised in the above-mentioned background art.
  • an injection device that is convenient for identifying the induced pressure, including an outer sleeve and a push rod, a sealing ring is sleeved at the end of the push rod, and the front end of the push rod is formed inwardly.
  • Cavity with clusters of vesicles in the cavity.
  • the present invention provides an injection device that is easy to recognize the induced pressure, adopts a built-in structure of vesicles, has a clustered shape, is easy to see and identify, and has a light hand feel.
  • the device has the advantages of improving the puncture success rate and safety; and the advantages of low cost, simple structure, easy to use for novices and convenient teaching make it proficient in completing the spinal dura puncture operation, and can be widely used in various medical institutions Surgical anesthesia and clinical examination treatment.
  • Fig. 1 is a schematic structural view of the injection device of the present invention.
  • Fig. 2 is an exploded schematic view of the injection device of the present invention.
  • Fig. 3 is a structural schematic diagram of the first embodiment of the clustered vesicle assembly structure of the present invention.
  • Fig. 4 is a schematic diagram of the assembly structure of the card cover of the present invention.
  • Fig. 5 is a structural schematic diagram of the second embodiment of the clustered vesicle assembly structure of the present invention.
  • Fig. 6 is a perspective view of clustered vesicles of the present invention.
  • Fig. 7 is a schematic diagram of the clustered vesicle structure of the present invention.
  • Fig. 8 is a perspective view of the push rod of the present invention.
  • Fig. 9 is a structural schematic diagram of the push rod of the present invention.
  • the present invention provides a technical solution: an injection device that is easy to identify the induced pressure, including the outer sleeve 1 and the push rod 4, the end of the push rod 4 is sleeved with a sealing ring 2, the difference Compared with the prior art, the front end of the push rod 4 forms a cavity 44 inward, and the cluster-shaped vesicles 3 are arranged in the cavity 44 .
  • the clustered vesicle 3 is composed of a vesicle body 33 and a vesicle tuft angle 32, and a cavity 34 is formed in the vesicle body 33, and the cavity 34 is formed in the vesicle.
  • the upper end of the body 33 is open, the vesicle cluster corners 32 are distributed at the lower end of the vesicle body 33 , and the outer edge of the upper end of the vesicle body 33 forms a vesicle snap ring 31 .
  • the average thickness of the vesicle wall of the bottom region 35 of the vesicle body 33 is less than the thickness of the side wall 36 of the vesicle body 33, preferably, the bottom region 35 of the vesicle body 33 is round
  • the thickness of the vesicle wall in the bottom area 35 gradually becomes thinner, and the thickness becomes thinner as it gets closer to the center of the arc bottom; during the process of pushing the medicine with the syringe, under the action of pressure, the clustered vesicles 3 are forced to bulge, and the bubbles Where the wall is thicker, the deformation is small.
  • the wall of the vesicle in the bottom area 35 is thinner, and the wall of the vesicle becomes thinner toward the center, a larger deformation occurs. After deformation, the four vesicle clusters located in the bottom area The angle 32 is also expanded to the surroundings, and the change process of the vesicle cluster angle 32 can be clearly observed with the naked eye.
  • the cavity 44 forms a cavity neck 441 at the front end of the push rod 4, and the cavity neck 441 forms an annular groove 43 on the wall of the cavity to cooperate with the above-mentioned blister snap ring 31.
  • the capsule snap ring 31 is inserted into the annular slot 43 of the push rod 4 .
  • the inner diameter of the cavity neck 441 is greater than the inner diameter of the lower cavity 44 .
  • a sealing ring groove 42 is formed on the outer wall near the front end of the push rod 4 to cooperate with the above sealing ring 2 .
  • a leading edge 41 is formed at the front end of the push rod 4, and the leading edge 41 is turned inward to form a limiting ring 411, which is realized by secondary molding. 411 is used to limit the clustered vesicles 3 .
  • the cavity neck 441 is provided with a clamping cover 5, and the lower part of the clamping cover 5 is at least near the outer edge.
  • the outside of the clamping blocks 51 forms a raised portion 511, and the inner wall of the cavity neck 441 forms a ring that cooperates with the above-mentioned raised portion 511.
  • Shape limiting groove 46, the protrusion 511 is interference fit with the annular limiting groove 46, and is used to limit the axial displacement of the card cover 5, and the card cover 5 presses the blister snap ring 31 of the blister body 33 downward.
  • a support column 52 extending downward is formed below the card cover 5, and the support column 52 extends into the cavity 34 of the blister body 33 for supporting the inner space of the blister body 33, and the support column 52 is a split valve. structure, the support column 52 is at least equally divided into two left and right petals in the longitudinal direction, and a gap is formed between the main body petals to facilitate liquid circulation.
  • the card cover 5 is provided with a through hole 53 communicating with the support column 52. It is longitudinally divided into four petal structures, and a gap is formed between the petals, and the gap communicates with the above-mentioned through hole 53 to facilitate the introduction of liquid.

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

Abstract

医疗注射器领域的一种便于识别感应压力的注射装置，包括外套筒（1）和推杆（4），推杆（4）的端部套接有密封圈（2），推杆（4）的前端向内形成空腔（44），空腔（44）内设有簇状泡囊（3）。与现有技术相比，采用囊泡内置结构，外形簇状，便于可视和识别，且操作手感轻便。该注射装置具备提高穿刺成功率、安全性，且成本低、结构简单、利于新手使用和方便教学的优点，使其熟练完成脊椎硬膜穿刺操作，同时可广泛适用于各种医疗机构的手术麻醉和临床检验治疗。

Description

一种便于识别感应压力的注射装置 技术领域
本发明涉及医用注射器的技术领域，具体为一种便于识别感应压力的注射装置，特别涉及其机械连接结构。
背景技术
现代医疗在对患者进行局部或全身麻醉时，需要先对脊椎硬膜进行穿刺，使针头进入脊椎硬膜外腔。刺浅了，无法穿透脊椎硬膜，无法正常麻醉；刺深了，又容易损伤脊髓或神经，穿刺成功与否完全取决于操作者的感觉和经验。
对比文件，专利号：2012200898482，申请日：2012-03-12；专利权人：河南驼人医疗器械集团有限公司，本案公开了一种“硬膜外腔穿刺用高阻力推杆囊泡指示注射器”，该装置包括器体、针头和推杆其特征在于：所述器体上或器体嘴上或针头根部上设有一支管，该支管上设有一密封囊泡，推杆前推，密封囊泡膨胀，并有下述关系：(P1-P0)×S≤Fmax，其中P1为密封囊泡内流体压强；P0为大气压强；S为推杆密封面在推杆横截面上的投影面积；Fmax为推杆与器体内壁之间的最大静摩擦力。上述关系具体表现为：推杆前推、密封囊泡膨胀后，松开推杆，推杆不后退。囊泡用弹性或柔性材料制成，不透水、不透气。所述支管设置在器体前段侧壁上，并与器体内腔相通；作为优化，所述支管设置在器体嘴侧壁上，并与器体内腔相通；作为优化，所述支管设置在针头根部侧壁上，并与针头内腔相通。本实用新型在临床具体实际操作时，囊泡变瘪的同时推杆后移，从而不能精确的判定是由于穿刺到位后负压引起的囊泡变瘪还是由于推杆后移引起的囊泡变瘪。
市场上的“硬膜外腔穿刺注射器”都是囊泡外置结构，不仅外形外观不美观，囊泡暴露医各种务尖锐器械环境中极易造成误伤刺破而导致手术失败。
发明内容
(一)解决的技术问题
针对现有技术的不足，本发明提供了一种便于识别感应压力的注射装置，以解决上述背景技术中提出的问题。
(二)技术方案
为实现上述目的，本发明提供如下技术方案：一种便于识别感应压力的注射装置， 包括外套筒和推杆，推杆的端部套接有密封圈，所述推杆的前端向内形成空腔，空腔内设有簇状泡囊。
与现有技术相比，本发明提供了一种便于识别感应压力的注射装置，采用囊泡内置结构结构，外形簇状，便于可视和识别，且操作手感轻便。这样一来，该装置优点提高穿刺成功率、安全性；而且成本低、结构简单、利于新手使用和方便教学的优点，使其熟练完成脊椎硬膜穿刺操作，同时可广泛适用于各种医疗机构的手术麻醉和临床检验治疗。
附图说明
图1为本发明注射装置的结构示意图。
图2为本发明注射装置的爆炸示意图。
图3为本发明簇状泡囊装配结构第一实施例结构示意图。
图4为本发明卡盖装配结构示意图。
图5为本发明簇状泡囊装配结构第二实施例结构示意图。
图6为本发明簇状泡囊立体图。
图7为本发明簇状泡囊结构示意图。
图8为本发明推杆立体图。
图9为本发明推杆结构示意图。
其中：1、外套筒；2、密封圈；3、簇状泡囊；31、泡囊卡环；32、泡囊簇角；33、泡囊本体；34、腔体；35、底部区域；36、侧壁；4、推杆；41、前缘；42、密封圈凹槽；43、环状卡槽；44空腔；411、限位环；441、空腔颈；5、卡盖；51、卡块；52、支撑柱；53通孔；511、凸起部。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-2，本发明提供一种技术方案：一种便于识别感应压力的注射装置，包括外套筒1和推杆4，推杆4的端部套接有密封圈2，其区别于现有技术在于：所述推杆4的前端向内形成空腔44，空腔44内设有簇状泡囊3。
在具体实施时，如图6中所示，所述簇状泡囊3由泡囊本体33和泡囊簇角32构成，泡囊本体33内形成腔体34，所述腔体34在泡囊本体33的上端处呈开口状，泡囊簇角32分布在泡囊本体33下端处，泡囊本体33上端的外缘处形成泡囊卡环31。
在具体实施时，如图7中所示，所示泡囊本体33底部区域35的泡囊壁平均厚度小于泡囊本体33的侧壁36厚度，优选的，泡囊本体33底部区域35呈圆弧底，底部区域35的泡囊壁厚度呈逐渐变薄，越靠近圆弧底中心的厚度越薄；在注射器推药过程中，在压力作用下，簇状泡囊3受力鼓起，泡囊壁较厚的地方形变较小，由于底部区域35的泡囊壁较薄，且越往中心泡囊壁越薄，故产生较大的形变，形变后，位于底部区域的四根泡囊簇角32也随之向四周撑开，肉眼可以明显观察到泡囊簇角32的变化过程。
在具体实施时，所述空腔44在推杆4前端处形成空腔颈441，所述空腔颈441在腔体壁处形成与上述泡囊卡环31配合的环状卡槽43，泡囊卡环31嵌入推杆4的环状卡槽43内。
在具体实施时，所述空腔颈441的内径值大于下部空腔44的内径值。
在具体实施时，所述推杆4在靠近前端的外壁处形成与上述密封圈2配合的密封圈凹槽42。
在具体实施时，如图3所示，所述推杆4前端处形成前缘41，该前缘41向内翻折形成限位环411，限位环411由二次成型实现，限位环411用于对簇状泡囊3进行限位。
在具体实施时，如图4-图5所示，簇状泡囊3还有另外一种定位方式，所述空腔颈441内设有卡盖5，卡盖5的下部靠近外缘处至少设有4块卡块51，所述卡块51之间呈等夹角分布，所述卡块51的外侧形成凸起部511，空腔颈441内壁上形成与上述凸起部511配合的环状限位槽46，凸起部511与环状限位槽46过盈配合，用于限制卡盖5轴向位移，卡盖5向下压紧泡囊本体33的泡囊卡环31。所述卡盖5的下方形成向下延伸的支撑柱52，该支撑柱52延伸至泡囊本体33的腔体34内，用于支撑泡囊本体33内部空间，所述支撑柱52为分瓣结构，该支撑柱52纵向至少等分成左右两瓣，主体瓣之间形成间隙，便于液体流通，卡盖5处开设有与支撑柱52内部连通的通孔53，优选的，所述支撑柱52纵向 分隔成四瓣结构，瓣体之间形成间隙，该间隙与上述通孔53连通，便于液体导入。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (9)

  1. 一种便于识别感应压力的注射装置，包括外套筒(1)和推杆(4)，推杆(4)的端部套接有密封圈(2)，其特征在于：所述推杆(4)的前端向内形成空腔(44)，空腔(44)内设有簇状泡囊(3)。
  2. 根据权利要求1所述的一种便于识别感应压力的注射装置，其特征在于：所述簇状泡囊(3)由泡囊本体(33)和泡囊簇角(32)构成，泡囊本体(33)内形成腔体(34)，所述腔体(34)在泡囊本体(33)的上端处呈开口状，泡囊簇角(32)分布在泡囊本体(33)下端处，泡囊本体(33)上端的外缘处形成泡囊卡环(31)。
  3. 根据权利要求2所述的一种便于识别感应压力的注射装置，其特征在于：所述空腔(44)在推杆(4)前端处形成空腔颈(441)，所述空腔颈(441)在腔体壁处形成与上述泡囊卡环(31)配合的环状卡槽(43)，泡囊卡环(31)嵌入推杆(4)的环状卡槽(43)内。
  4. 根据权利要求3所述的一种便于识别感应压力的注射装置，其特征在于：所述空腔颈(441)的内径值大于下部空腔(44)的内径值。
  5. 根据权利要求1所述的一种便于识别感应压力的注射装置，其特征在于：所述推杆(4)在靠近前端的外壁处形成与上述密封圈(2)配合的密封圈凹槽(42)。
  6. 根据权利要求3所述的一种便于识别感应压力的注射装置，其特征在于：所述推杆(4)前端处形成前缘(41)，该前缘(41)向内翻折形成限位环(411)。
  7. 根据权利要求3所述的一种便于识别感应压力的注射装置，其特征在于：所述空腔颈(441)内设有卡盖(5)，卡盖(5)的下部靠近外缘处至少设有4块卡块(51)，所述卡块(51)之间呈等夹角分布，所述卡块(51)的外侧形成凸起部(511)，空腔颈(441)内壁上形成与上述凸起部(511)配合的环状限位槽(46)，凸起部(511)与环状限位槽(46)过盈配合，用于限制卡盖(5)轴向位移，卡盖(5)向下压紧泡囊本体(33)的泡囊卡环(31)。
  8. 根据权利要求7所述的一种便于识别感应压力的注射装置，其特征在于：所述卡盖(5)的下方形成向下延伸的支撑柱(52)，该支撑柱(52)延伸至泡囊本体(33)的腔体(34)内，用于支撑泡囊本体(33)内部空间。
  9. 根据权利要求8所述的一种便于识别感应压力的注射装置，其特征在于：所述支撑柱(52)为分瓣结构，该支撑柱(52)纵向至少等分成左右两瓣。
PCT/CN2022/108057 2021-12-29 2022-07-26 一种便于识别感应压力的注射装置 Ceased WO2023124044A1 (zh)

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