WO2016179795A1 - Aiguille de cathéter ouverte avec manchon de protection à fente - Google Patents

Aiguille de cathéter ouverte avec manchon de protection à fente Download PDF

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Publication number
WO2016179795A1
WO2016179795A1 PCT/CN2015/078761 CN2015078761W WO2016179795A1 WO 2016179795 A1 WO2016179795 A1 WO 2016179795A1 CN 2015078761 W CN2015078761 W CN 2015078761W WO 2016179795 A1 WO2016179795 A1 WO 2016179795A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
card
sleeve
slot
protection sleeve
Prior art date
Application number
PCT/CN2015/078761
Other languages
English (en)
Chinese (zh)
Inventor
陈永曦
Original Assignee
福建省百仕韦医用高分子股份有限公司
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 福建省百仕韦医用高分子股份有限公司 filed Critical 福建省百仕韦医用高分子股份有限公司
Priority to PCT/CN2015/078761 priority Critical patent/WO2016179795A1/fr
Priority to CN201580079741.6A priority patent/CN107530491A/zh
Publication of WO2016179795A1 publication Critical patent/WO2016179795A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like

Definitions

  • the invention relates to a medical device suitable for use in an intravascular, in particular to an open indwelling needle of a slotted protective cover for preventing needle tip stab wounds and preventing blood pollution in clinical medical treatment.
  • the indwelling needle is composed of a needle guard 1, a catheter assembly 2, a puncture needle assembly 3 and a venting plug group 4.
  • the needle protector 1 should be removed and placed aside. After the puncture is successfully placed, the blood vessel should be pressed by hand, and then the puncture needle should be withdrawn. After the infusion set is inserted at the back end of the needle cannula, release it. The hand that holds the blood vessel.
  • the protective sleeve Since the protective sleeve is detached from the needle seat at the time of puncture, the needle tip that is withdrawn after the puncture is missing protection. If the protective sleeve is returned to the needle holder, it is dangerous and may stab itself, so the medical staff will usually use the puncture for withdrawal.
  • the needle tube is placed directly into the waste box, so that the needle tube and the needle tip are directly exposed without protection. When the medical staff cleans and destroys the used needle tube assembly, it is easy to accidentally stab the person and be threatened by the infectious disease, and at the same time, the needle tube is brought inside. Blood can also pollute the environment.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide an open type indwelling needle for a slotted protective cover which can cover a needle tube before and after puncture use, and can prevent stab wounds and blood contamination of the needle tube.
  • Open-type indwelling needle for slotted protective sleeve including needle guard, catheter assembly, puncture needle and vent plug assembly, with operating flaps or levers fixed on the needle seat, venting impervious vent assembly
  • the indwelling channel is located in the inner core of the catheter hub, and the main point of the composition is that the needle seat is connected to the operating flap or the operating latch through the guiding connecting rib, and the needle protecting sleeve is an elongated hollow shell and a side wall.
  • the corresponding two side walls have a sliding slot of a certain length, the front end of the sliding slot is open, and the slot corresponds to the guiding connecting rib and can accommodate the guiding connecting rib, and the needle protective sleeve is inserted into the needle seat from the rear end of the indwelling needle and Slide forward until the rear contact device between the two is snap-fitted. At this time, the needle protector completely shields the needle tip.
  • a convex card protruding from the inner wall is fixed, and the needle guard is pulled backward. The rear card contact device is out of the touch and straight When the convex card and the needle seat are in contact with each other, the card is caught and stopped.
  • the needle tube assembly separated from the catheter assembly moves relative to the needle protection sleeve and is retracted into the needle protection sleeve until the rear card contact device is again engaged with the needle.
  • the tube cover completely obscures the tip of the needle again.
  • the needle protection sleeve is pulled backward, the rear card contact device is disengaged from the card, and the hand-held operation flap is provided with the needle tube assembly, the catheter assembly and the card after the convex card and the needle holder are engaged and formed before the card is caught and stopped.
  • the needle guard that touches the back of the needle assembly is synchronized forward to perform the puncture operation.
  • the sliding slot acts both to accommodate the guiding link and to guide.
  • the object of the present invention can also be achieved by the following means.
  • the sliding slot When the sliding slot is disposed on one side, the sliding slot has a rear end or a blind resistance or an opening. When the sliding slot is disposed on both sides, the sliding slot has a blind end.
  • the utility model further comprises a needle holder contact device, wherein the needle holder contact device is located between the needle tube seat and the needle protection sleeve, and the needle holder contact device is snap-connected when the front card contact device is snapped.
  • the tube holder is pressed and the barrel or the flap is pulled backward. Due to the resistance of the needle holder, the withdrawal of the needle assembly is reversed relative to the needle holder and the sheath protection sleeve. Move until the needle tube is retracted into the needle tube protective sleeve and completely obscured by the needle tube and the rear card contact device is again snapped. Then, the needle tube protective sleeve is pulled back to pull the needle tube holder to disengage, and the needle holder is completed. The needle guard is detached from the needle hub. In this way, the needle tip is never exposed and safer throughout the operation.
  • the card touch device constituting the front and rear snap devices and the needle seat chucking device is used for reminding the position of the stroke position and temporary positioning and fixing between the two.
  • the specific card touch device is more common, and the following Is a more appropriate one:
  • the rear card contact device is composed of a matching convex card point and a groove, and the convex card point and the groove are respectively located on the needle tube protective sleeve and the corresponding card contact member, and the card contact member is either a needle seat or an operation flap. Or it is a guide connecting rib.
  • the front card contact device is composed of a limit ring and a corresponding outer step on the needle seat or the needle tube seat corresponding to the contact ring of the limit ring, and the limit ring is fixed to the needle tube after the needle seat assembly is installed into the needle tube protective cover.
  • the needle holder clamping device is composed of a matching convex card point and a groove, and the convex card point and the groove are respectively located on the needle tube protective sleeve and the needle tube seat.
  • an end cap that is plugged into the front end of the needle guard.
  • the end cap is used to shield the tip of the needle on the end face.
  • the sleeve as the needle protective sleeve is a thin cylindrical shell, and a rectangular slit of a certain width is opened on one side, the slot is slidingly matched with the guiding connecting rib on the needle seat, one end of the slot is opened, and the limiting ring is installed in the needle hub assembly into the needle tube.
  • the front end portion of the needle protective sleeve is fixed and an inner step is formed in the inner cavity of the needle protective sleeve, and a convex card is arranged inside the slot at the rear end of the slot, and the convex card is either single or opposite.
  • the front and rear end faces of the convex card are inclined at an acute angle, which makes it easier to slide out the corresponding groove on the needle seat when pushing, the convex card is the convex card of the rear card contact device, and the needle seat in the puncture needle tube assembly is made of transparent material.
  • the utility model is composed of a stepped tower-shaped needle seat main body, a cylindrical shell with an axial notch coaxial therewith, and a guiding connecting rib connecting the two, and the outer side of the cylindrical shell is symmetrically arranged with a puncture operation pinch, and the stepped tower-shaped needle seat front end
  • the stepped surface and the inner step formed by the limiting ring at the front end of the protective sleeve are snapped back to form a front latching device, and the largest outer peripheral surface of the stepped tower-shaped needle seat is slidably matched with the cylindrical surface of the protective sleeve inner cavity, and the guiding rib is set up and down symmetrically slide
  • the radial width of the sliding groove is matched with the wall thickness of the protective sleeve, and a groove is arranged at the bottom of the sliding groove at the front end of the sliding groove near the needle tube, and the groove size is matched with the convex card of the rear clamping device of the protective cover to form a rear
  • the outer side wall of the tail end of the needle guard sleeve is symmetrically disposed with a pull operation lug.
  • the present invention has the following advantages over the prior art: after the indwelling needle is used, the needle tube and the needle tip can be effectively protected in real time, preventing accidental injury and blood pollution to the environment during subsequent processing of the needle tube, and
  • the structure of the existing puncture needle and the puncture use mode are basically unchanged, and the utility model is strong, and is convenient for popularization and application.
  • FIG. 1 is a schematic view showing the structure of an open type indwelling needle in the prior art
  • Figure 2 is a schematic cross-sectional perspective view showing the structure of an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 3 is a schematic cross-sectional view showing the structure of an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • FIG. 4 is a schematic view showing the structure of a needle guard in an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 5 is a schematic perspective view showing the structure of a needle guard in an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 6 is a schematic perspective cross-sectional view showing the structure of a needle guard in an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 7 is a schematic perspective view showing the structure of a retaining ring of an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 8 is a schematic perspective cross-sectional view showing the structure of a retaining ring in an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 9 is a schematic perspective view showing the structure of an open indwelling needle middle end cap of a slot type protective cover according to a preferred embodiment of the present invention.
  • Figure 10 is a schematic perspective view showing the structure of a needle holder in an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 11 is a schematic perspective cross-sectional view showing the structure of a needle holder in an open type indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 12 is a schematic perspective cross-sectional view showing the structure of a needle holder in an open indwelling needle of a slot type protective cover according to a preferred embodiment of the present invention
  • Figure 13 is a schematic perspective view showing the structure of the open indwelling needle of the slot type protective cover in the preferred embodiment of the present invention, in which the needle guard is retracted to the puncture state.
  • the open indwelling needle of the slotted protective cover is comprised of a needle guard 1, a catheter assembly 2, a puncture needle assembly 3 and a gas permeable, watertight venting plug 4.
  • the needle protective sleeve 1 is composed of a sleeve 1.1, an end cover 1.2 and a front end limiting ring 1.3.
  • the limiting ring 1.3 is fixed to the step inside the front end of the protective sleeve, and the end cover 1.2 is sleeved at the front end before the indwelling needle is not used. Needle tip shielding.
  • the puncture needle assembly and the vent plug are assembled, they are inserted from the front end opening of the protective sleeve, and the guiding connecting ribs 3.1.3 on the needle seat 3.1 are passed into the slot of the protective sleeve on the protective slot 1.1.1, sliding all the way to the guiding rib
  • the groove is in contact with the elastic convex card 1.1.2 on the slot, and then the limit ring is inserted into the front end of the sleeve and fixed to the inner step.
  • the end of the sleeve is then placed over the end cap.
  • a venting impervious vent assembly is mounted to the rear of the hub and the indwelling channel is located within the catheter hub core.
  • the sleeve as the sheath protection sleeve is a thin cylindrical shell, and a rectangular slit of a certain width is opened on one side, 1.1.1, the slot 1.1.1 and the guide connecting rib on the needle seat 3.1. 3 sliding matching, the slot is open at one end, and the limiting ring 1.3 is fixed to the front end of the needle protective sleeve after the needle seat assembly is installed into the needle protective sleeve 1, and the inner step is formed in the inner cavity of the needle protective sleeve 1.1.5, in the slot
  • the inner side of the slot at the rear end of the slot is provided with a convex card 1.1.2, and one side of the convex card 1.1.2 is provided.
  • the front and rear end faces of the convex card 1.1.2 are inclined at an acute angle, which makes it easier to slide out of the needle seat when pushing.
  • the convex card is a convex card of the rear card contact device.
  • the outer side wall of the tail end of the needle guard is symmetrically provided with a pull operation lug 1.1.4.
  • the limiting ring 1.3 is composed of two coaxial rings which are integrally fixed by one end face, and the end face of the opening can be inserted into the front end portion of the needle guard.
  • the end cap is a one-end closed flap.
  • the needle holder 3.1 of the puncture needle cannula assembly is made of a transparent material, which is composed of a stepped tower-shaped hub body 3.1.1, a cylindrical shell with an axial notch coaxial with it 3.1. 2, and the connection of the two guiding joints 3.1.3, the outer side of the cylindrical shell symmetrically set the puncture operation of the ears 3.1.2.1.
  • the guide link is only one side set. 3.1.1.1 is the blood return observation window.
  • the cylindrical surface of the inner cavity is slidingly matched, and the guiding ribs are provided with upper and lower symmetrical sliding grooves, and the radial width of the sliding groove is matched with the wall thickness of the protective sleeve, and a groove is arranged at the bottom of the sliding groove at the front end of the sliding groove near the needle tube, the size of the groove and the protective sleeve
  • the male card of the rear card contact device is matched and constitutes a rear card contact device.

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

Abstract

La présente invention concerne un instrument médical approprié pour une application intravasculaire, et en particulier une aiguille de cathéter ouverte avec manchon de protection à fente pour empêcher une blessure par perforation d'aiguille et des contaminations sanguines en médecine clinique. Une base d'aiguille (3.1) est connectée à une languette opérationnelle ou à un ergot de fonctionnement (3.1.2.1) par une nervure de guidage et de liaison (3.1.3). Un manchon de protection de tube d'aiguille (1) est un boîtier allongé creux. Une paroi latérale ou deux parois latérales correspondantes ont une fente de coulissement (1.1.1) d'une certaine longueur. Le manchon de protection de tube d'aiguille est emboîté dans la base de l'aiguille à partir de l'extrémité arrière de l'aiguille de cathéter et coulisse vers l'avant jusqu'à ce qu'un dispositif d'engagement arrière s'engage et se connecte entre les deux, et au niveau de ce point, le manchon de protection d'aiguille recouvre complètement la pointe de l'aiguille. Le manchon de protection de tube d'aiguille est tiré vers l'arrière pour se désengager du dispositif d'engagement arrière jusqu'à ce qu'une attache faisant saillie permette de réaliser une mise en prise avec la base de l'aiguille, empêchant le manchon de protection d'aiguille de se déplacer vers l'arrière. Après une ponction, un ensemble de tube d'aiguille se déplace par rapport au manchon de protection de tube d'aiguille et se déplace vers l'arrière dans le manchon de protection de tube d'aiguille jusqu'à ce que le dispositif d'engagement arrière s'engage à nouveau, et à ce moment, le manchon de protection de tube d'aiguille recouvre à nouveau entièrement la pointe de l'aiguille. Un avantage de la présente invention est qu'elle fournit une protection efficace dans le temps pour le tube d'aiguille et la pointe de l'aiguille et qu'elle empêche les blessures accidentelles et les contamination sanguines, et par conséquent la présente invention présente une grande utilité pratique et est par conséquent facile à commercialiser.
PCT/CN2015/078761 2015-05-12 2015-05-12 Aiguille de cathéter ouverte avec manchon de protection à fente WO2016179795A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/078761 WO2016179795A1 (fr) 2015-05-12 2015-05-12 Aiguille de cathéter ouverte avec manchon de protection à fente
CN201580079741.6A CN107530491A (zh) 2015-05-12 2015-05-12 槽缝式保护套的开放式留置针

Applications Claiming Priority (1)

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PCT/CN2015/078761 WO2016179795A1 (fr) 2015-05-12 2015-05-12 Aiguille de cathéter ouverte avec manchon de protection à fente

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WO2016179795A1 true WO2016179795A1 (fr) 2016-11-17

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109222997A (zh) * 2018-10-12 2019-01-18 河南曙光汇知康生物科技股份有限公司 一种便于安全回收的采血针
CN110585519A (zh) * 2019-09-06 2019-12-20 佛山特种医用导管有限责任公司 无损伤针以及输液装置
CN110731813A (zh) * 2019-11-28 2020-01-31 搏时（北京）医疗科技有限公司 一种胸骨穿刺针底座组件以及胸骨穿刺针
CN113727659A (zh) * 2019-02-22 2021-11-30 爱惜康股份有限公司 用于储存缝合针以及使用机器人递送选定的缝合针穿过套管针的系统、装置和方法

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* Cited by examiner, † Cited by third party
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CN110507477B (zh) * 2019-09-27 2024-05-17 安徽国泰国瑞医疗科技有限公司 一种用于眼科引流管植入的装置

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Publication number Priority date Publication date Assignee Title
WO1995013107A2 (fr) * 1993-11-09 1995-05-18 Smiths Industries Public Limited Company Ensembles de protection d'aiguilles
US20010016713A1 (en) * 2000-02-21 2001-08-23 Mitsubishi Pencil Kabushiki Kaisha Indwelling needle with an inner needle retraction mechanism
CN201101798Y (zh) * 2007-11-05 2008-08-20 Amsino医疗集团控股有限公司 安全型静脉留置针
CN202478304U (zh) * 2012-03-29 2012-10-10 浙江康德莱医疗器械股份有限公司 一种静脉输液留置针安全保护套
CN103301528A (zh) * 2013-06-18 2013-09-18 浙江康德莱医疗器械股份有限公司 一种安全静脉输液留置针组件
CN204840494U (zh) * 2015-05-12 2015-12-09 福建省百仕韦医用高分子股份有限公司 槽缝式保护套的开放式留置针

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109222997A (zh) * 2018-10-12 2019-01-18 河南曙光汇知康生物科技股份有限公司 一种便于安全回收的采血针
CN113727659A (zh) * 2019-02-22 2021-11-30 爱惜康股份有限公司 用于储存缝合针以及使用机器人递送选定的缝合针穿过套管针的系统、装置和方法
CN110585519A (zh) * 2019-09-06 2019-12-20 佛山特种医用导管有限责任公司 无损伤针以及输液装置
CN110585519B (zh) * 2019-09-06 2024-03-19 佛山特种医用导管有限责任公司 无损伤针以及输液装置
CN110731813A (zh) * 2019-11-28 2020-01-31 搏时（北京）医疗科技有限公司 一种胸骨穿刺针底座组件以及胸骨穿刺针

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