CN107802922B

CN107802922B - Infusion sterilizer and sterilization method thereof

Info

Publication number: CN107802922B
Application number: CN201711172624.1A
Authority: CN
Inventors: 骆如意; 赵莉
Original assignee: Hunan Sanrui Biotechnology Co ltd
Current assignee: Hunan Sanrui Biotechnology Co ltd
Priority date: 2017-11-22
Filing date: 2017-11-22
Publication date: 2023-06-20
Anticipated expiration: 2037-11-22
Also published as: CN107802922A

Abstract

The invention discloses an infusion sterilizer and a sterilization method thereof. The infusion sterilizer comprises a sleeve for containing a medicament, a push rod inserted into the inner cavity of the sleeve for realizing negative pressure pushing by pushing in the inner cavity of the sleeve to compress the volume of a closed space of the sleeve, and a rubber packet head embedded at the front end of the push rod for sealing between the push rod and the sleeve, wherein the front end of the sleeve is provided with a needle joint component for exhausting, draining or connecting an injection needle, a negative joint component for connecting with a positive pressure joint of an infusion apparatus to inject the disinfectant or the medicament, and a positive joint component for opening by axial pressing to inject the disinfectant, inject the medicament or exhaust. The inner cavity of the transfusion sterilizer can be thoroughly sterilized; the aim of accelerating the drying of the disinfectant on the surface of the joint to be disinfected and shortening the waiting time of the disinfectant can be achieved, so that infusion operators can inject the liquid medicine in time, and the operation difficulty is reduced.

Description

Infusion sterilizer and sterilization method thereof

Technical Field

The invention relates to the technical field of medical appliances, in particular to an infusion sterilizer. In addition, the invention also relates to a disinfection method of the infusion disinfector.

Background

Catheter-related blood flow infections (CRBSIs) are caused by intravascular catheter microorganisms, are one of the most common ICU-related infections, are one of the most leading causes of death in critical patients clinically, and also greatly increase medical care costs. According to the research report of the American CDC disease prevention and control center, the infection cases caused by infusion are up to 50 ten thousand (on average, one occurs per minute) each year, the death rate of the infection caused by infusion is up to 12-25% each year, the death rate is close to 1/4, and the nursing cost for treating the infection each year accounts for 44% of the total medical cost.

In CDC2011, "guide to prevention of intravascular catheter related infections" emphasized: catheter junctions are known sources of catheter-related blood flow infections, and needleless junctions are sites of biological contamination. Therefore, the protection and disinfection of medical catheter joints is of great significance. The disease control and control prevention center issues a series of care requirements and procedures for CRBSI prevention, including hand hygiene, catheter end care, and additive sterilization. However, this does not change the threat level of CRBSI in medical systems over the last 10 years. According to related studies in the united states, 46% of the infusion tips were not effectively sterilized during the clinical procedure.

Catheters have been shown to have some effect on the prevention of CRBSI by impregnation with an antimicrobial medium, but this is not completely ameliorated, and some germs may even be resistant to the antimicrobial medium and disable the catheter's antimicrobial effect.

On the other hand, after disinfection, the disinfection solution is naturally kept stand for a long time, so that the difficulty of transfusion operation is increased.

Disclosure of Invention

The invention provides an infusion sterilizer and a sterilization method thereof, which are used for solving the problem that the conventional infusion sterilizer is difficult to thoroughly sterilize; the long waiting time after disinfection leads to the technical problem of the increase of the operation difficulty of transfusion.

According to one aspect of the invention there is provided an infusion sterilizer comprising a sleeve for containing a medicament, a push rod inserted into the interior cavity of the sleeve for negative pressure pushing by pushing in the interior cavity of the sleeve to compress the enclosed volume of the sleeve, and a rubber boot affixed to the front end of the push rod for sealing between the push rod and the sleeve, the front end of the sleeve being provided with a needle hub assembly for venting, draining or connecting an injection needle, a female hub assembly for connecting with a positive pressure hub of an infusion apparatus for injecting a disinfectant or medicament, and a male hub assembly for opening by axial pressing for injecting a disinfectant, injecting a medicament or venting.

Further, the needle joint assembly comprises a through head communicated to the inner cavity of the sleeve and a through cover spliced and capped on the opening of the through head; the through cover is connected with the side wall of the through head into a whole through the connecting piece; the inner cavity of the straight-through head is provided with a flaring cavity with the radial size gradually decreasing from outside to inside.

Further, the female joint assembly comprises a connecting pipe communicated with the inner cavity of the sleeve, a female joint arranged at the pipe end of the connecting pipe and used for being connected in a sealing way through the inner cavity, and a joint cover which is connected in the inner cavity of the female joint in a sealing way and used for sealing the female joint or expanding the opening size of the female joint; the connecting pipe and the female joint are of an integral structure, and the connecting pipe stretches into the female joint and is fixed on the inner side wall of the inner cavity of the female joint through the fixed inner ring; the part of the inner wall surface of the female joint, which is positioned between the fixed inner ring and the female joint opening, is provided with an inner wall connecting structure for sealing connection assembly.

Further, the male joint assembly comprises a middle pipe communicated to the inner cavity of the sleeve, a male joint arranged at the end part of the middle pipe, a joint sleeve arranged outside the middle pipe and propped against the side wall of the male joint, and an external joint cover sleeved outside the male joint and propped against the side wall surface of the joint sleeve for sealing the male joint or externally connecting the male joint.

Further, a conical plug is arranged at the opening part of the male connector, the conical plug is elastically connected into the inner cavity of the male connector through a spring, and the side wall surfaces at the two ends of the conical plug are respectively connected with the inner wall surface of the male connector in a sealing way through a sealing gasket; the outer side wall of the male joint is provided with an outer sealing connection structure.

Further, the external joint cover comprises an outer sleeve shell and an outer through pipe, wherein the outer sleeve shell is sleeved outside the male joint, the outer through pipe penetrates through the outer sleeve shell along the axial direction of the outer sleeve shell, the outer through pipe is fixed on the inner wall surface of the outer sleeve shell through an outer sleeve fixing ring, and an inner connecting structure for being connected with the male joint in a matching way is arranged at the position, between the outer sleeve fixing ring and an opening of the outer sleeve shell, of the inner wall surface of the outer sleeve shell; the outer through connecting pipe, the outer sleeve fixing ring and the outer sleeve shell are of an integral structure.

Further, the push rod comprises a round cake end for thumb pressing, a dowel bar axially connected to a central shaft of the round cake end, long ribs axially arranged on the side wall of the dowel bar and circumferentially uniformly distributed to ensure bending strength and shearing strength of the dowel bar, and a conical clamping joint positioned at the front end of the dowel bar and fixedly connected with the rubber packet head and ensuring stable support in the rubber packet head; or the push rod comprises a round cake end used for being pressed by a thumb, a long rib which is connected to the round cake end along the vertical direction of the surface of the round cake end and used for guaranteeing bending resistance strength and shearing resistance strength, and a conical clamping joint which is positioned at the front end of the long rib and used for being fixedly connected with the rubber packet head in a embedding way and guaranteeing stable support in the rubber packet head, wherein a plurality of long ribs are uniformly distributed along the circumferential direction and are interconnected on the central axis of the push rod; the outer side wall surface of the round cake end is provided with anti-skid patterns for providing touch sense to accurately push and control, and one side of the long edge, which is attached to the inner wall surface of the sleeve, is provided with a notch for ensuring the pushing mechanical property of the push rod and relieving pushing resistance; the front end of the long edge is also provided with a baffle plate covered on the end part of the long edge, and a clamping groove for embedding the rubber packet head on the conical clamping joint and coating the conical clamping joint is reserved between the baffle plate and the conical clamping joint; one end of the long ridge, which is close to the cake end, is provided with a bevel edge for ensuring the pushing mechanical property of the push rod and relieving pushing resistance.

Further, at least three sealing rings which are circumferentially arranged outside the rubber packet head and used for sealing between the rubber packet head and the sleeve and ensuring the axial movement stability of the rubber packet head are arranged on the outer side surface of the rubber packet head; the rubber packet head inner cavity is set as the embedded groove matched with the shape of the front end of the push rod, and the front end surface of the rubber packet head is set as the external conical surface matched with the front end of the sleeve inner cavity for ensuring the mechanical guiding during the liquid pushing.

Further, the sleeve includes an outer rim for finger pressure and a barrel for forming an internal cavity; the front end of the cylinder body is provided with a conical head which is beneficial to exhaust during liquid pushing.

According to another aspect of the present invention, there is also provided a sterilization method of an infusion sterilizer, which adopts the above infusion sterilizer, comprising the steps of: closing the needle hub assembly and opening the female hub assembly; the output joint of the disinfectant output device is communicated with the female joint assembly, and the push rod is pulled to the tail end of the sleeve to suck the disinfectant; the front end of the sleeve is upward, the needle joint assembly and/or the male joint assembly is opened, the push rod is pushed to empty air bubbles in the sleeve, the needle joint assembly and/or the male joint assembly is closed, the push rod is continuously pulled to suck disinfectant, and the process is repeated for a plurality of times until the air bubbles in the sleeve disappear; the disinfectant stands still for full disinfection; disassembling an output joint of the disinfectant output device, opening a needle joint assembly and/or a male joint assembly, and pushing the disinfectant in the inner cavity of the push rod discharge sleeve; the push rod is repeatedly pushed and pulled to generate negative pressure of the inner cavity of the sleeve, so that disinfectants on the inner cavity surface of the sleeve, the inner cavity surface of the needle joint assembly, the inner cavity surface of the female joint assembly and the inner cavity surface of the male joint assembly are thoroughly dried and accelerated, and the problem that the inner cavity of the infusion sterilizer is long in waiting time after disinfection is solved.

The invention has the following beneficial effects:

according to the infusion sterilizer, three types of joint assemblies, namely the needle joint assembly, the female joint assembly and the male joint assembly, are respectively arranged at the front end of the sleeve, the needle joint assembly and the male joint assembly are sealed, the female joint assembly is used for connecting the disinfectant output equipment, a sealed cavity in which the inner cavity of the sleeve is directly communicated with the disinfectant output equipment is formed, the vacuum negative pressure in the sleeve is formed by pulling the push rod to suck the disinfectant, the inner cavity of the sleeve, the inner cavity of the needle joint assembly, the inner cavity of the female joint assembly and the inner cavity of the male joint assembly are fully sterilized, and air bubbles in the sleeve can be timely removed through selective opening and closing of the needle joint assembly and the male joint assembly, so that the sterilizing dead angle in the inner cavity of the infusion sterilizer is eliminated, the inner cavity of the whole infusion sterilizer is fully contacted with the disinfectant, and the purpose of thoroughly sterilizing the inner cavity of the infusion sterilizer is achieved. After disinfection, through opening the female joint component and selectively opening the needle joint component and the male joint component, and repeatedly pushing and pulling the push rod, negative pressure in the inner cavity of the sleeve is repeatedly generated, and the air is timely sucked and discharged through the needle joint component, the female joint component and the male joint component to take away disinfectant, so that the disinfectant on the surface of the disinfected joint is thoroughly dried and accelerated, the aim of shortening the waiting time of the disinfectant is achieved, and infusion operators can timely use medicine injection, so that the operation difficulty is reduced; avoid the disinfectant from immersing into the tissue during transfusion. When the transfusion sterilizer is used for transfusion operation, a needle head can be assembled by adopting a needle connector assembly to absorb liquid medicine, and the liquid medicine can be injected by adopting a female connector assembly or a male connector assembly; when there is the bubble in the sleeve, can in time exhaust through any one of needle joint component, negative joint component or positive joint component, avoid the liquid medicine loss when exhausting, improve the accuracy nature of using medicine.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of the structure of an infusion sterilizer according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the needle hub assembly of the preferred embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the female connector assembly of the preferred embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the male connector assembly of the preferred embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the push rod according to the preferred embodiment of the present invention;

fig. 6 is a schematic structural view of a rubber toe cap according to a preferred embodiment of the present invention;

fig. 7 is a schematic structural view of a sleeve according to a preferred embodiment of the present invention.

Legend description:

1. a sleeve; 101. an outer edge; 102. a cylinder; 103. a conical head; 2. a push rod; 201. a cake end; 2011. anti-skid lines; 202. a dowel bar; 203. a long ridge; 2031. a notch; 2032. a beveled edge; 204. a conical clamping joint; 205. a baffle; 206. a clamping groove; 3. a rubber packet head; 301. a seal ring; 302. a caulking groove; 303. an outer conical surface; 4. a needle hub assembly; 401. a straight-through head; 402. a through cap; 403. a connecting piece; 404. a flared bore; 5. a female connector assembly; 501. a connecting pipe; 502. a female joint; 503. a adaptor cover; 504. fixing the inner ring; 505. an inner wall connection structure; 6. a male connector assembly; 601. a middle tube; 602. a male connector; 6021. a conical plug; 6022. a spring; 6023. a sealing gasket; 6024. an outer sealing connection structure; 603. a joint sleeve; 604. an external head cover; 6041. an outer shell; 6042. an outer connecting pipe; 6043. a jacket fixing ring; 6044. an internal connection structure.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawing figures, but the invention can be practiced in a number of different ways, as defined and covered below.

FIG. 1 is a schematic view of the structure of an infusion sterilizer according to a preferred embodiment of the present invention; FIG. 2 is a schematic view of the needle hub assembly of the preferred embodiment of the present invention; FIG. 3 is a schematic view of the structure of the female connector assembly of the preferred embodiment of the present invention; FIG. 4 is a schematic view of the structure of the male connector assembly of the preferred embodiment of the present invention; FIG. 5 is a schematic view of the structure of the push rod according to the preferred embodiment of the present invention; fig. 6 is a schematic structural view of a rubber toe cap according to a preferred embodiment of the present invention; fig. 7 is a schematic structural view of a sleeve according to a preferred embodiment of the present invention.

As shown in fig. 1, the infusion sterilizer of the present embodiment comprises a sleeve 1 for accommodating a medicament, a push rod 2 inserted in an inner cavity of the sleeve 1 for realizing negative pressure pushing by pushing in the inner cavity of the sleeve 1 to compress a closed space volume of the sleeve 1, and a rubber packet head 3 embedded at the front end of the push rod 2 for sealing between the push rod 2 and the sleeve 1, wherein the front end of the sleeve 1 is provided with a needle joint assembly 4 for exhausting, draining or connecting an injection needle, a female joint assembly 5 for connecting with a positive pressure joint of an infusion apparatus to inject the disinfectant or the medicament, and a male joint assembly 6 for opening by axial pressing to inject the disinfectant, the medicament or the exhaust. According to the infusion sterilizer disclosed by the invention, three types of joint assemblies, namely the needle joint assembly 4, the female joint assembly 5 and the male joint assembly 6, are respectively arranged at the front end of the sleeve 1, the needle joint assembly 4 and the male joint assembly 6 are sealed, the female joint assembly 5 is utilized to connect the disinfectant output equipment, a sealed cavity in which the inner cavity of the sleeve 1 is directly communicated with the disinfectant output equipment is formed, the vacuum negative pressure in the sleeve 1 is formed by pulling the push rod 2 to suck the disinfectant, the inner cavity of the sleeve 1, the inner cavity of the needle joint assembly 4, the inner cavity of the female joint assembly 5 and the inner cavity of the male joint assembly 6 are fully sterilized, and air bubbles in the sleeve 1 can be timely removed through selective opening and closing of the needle joint assembly 4 and the male joint assembly 6, so that the sterilization dead angle in the inner cavity of the infusion sterilizer is eliminated, the whole inner cavity of the infusion sterilizer is fully contacted with the disinfectant, and the purpose of thoroughly sterilizing the inner cavity of the infusion sterilizer is achieved. After disinfection, negative pressure in the inner cavity of the sleeve 1 is repeatedly generated by repeatedly pushing and pulling the push rod 2 through opening the female joint component 5 and selectively opening the needle joint component 4 and the male joint component 6, and the disinfectant is timely sucked and discharged through the needle joint component 4, the female joint component 5 and the male joint component 6 to take away the disinfectant, so that the disinfectant on the surface of the disinfected joint is thoroughly dried and accelerated, the aim of shortening the waiting time of the disinfectant is achieved, and infusion operators can timely inject the medicine liquid and reduce the operation difficulty; avoid the disinfectant from immersing into the tissue during transfusion. When the transfusion sterilizer is used for transfusion operation, the needle head can be assembled by adopting the needle joint component 4 to absorb the liquid medicine, and the liquid medicine can also be injected by adopting the female joint component 5 or the male joint component 6; when bubbles exist in the sleeve 1, timely exhaust can be performed through any one of the needle joint assembly 4, the female joint assembly 5 or the male joint assembly 6, so that liquid medicine loss during exhaust is avoided, and the medication accuracy is improved.

As shown in fig. 1 and 2, in this embodiment, the needle hub assembly 4 includes a through-head 401 communicating with the interior cavity of the sleeve 1 and a through-cap 402 that plugs over the opening of the through-head 401. The air release and exhaust operation is convenient, so that air bubbles can be overflowed during disinfection or transfusion. Meanwhile, the closed space can be provided, so that standing and disinfection are facilitated, and cross infection and pollution are reduced. Through cap 402 is integrally connected to the side wall of through head 401 by a connector 403. Alternatively, the integrated injection molding can be adopted, so that the structural integrity is good and the sealing performance is good. The interior cavity of the straight-through head 401 is provided as a flared bore 404 of decreasing radial dimension from the outside to the inside. A high-speed suction into the sleeve 1 and a slow output can be formed.

As shown in fig. 1 and 3, in the present embodiment, the female joint assembly 5 includes a connection pipe 501 connected to the inner cavity of the sleeve 1, a female joint 502 at the end of the connection pipe 501 for sealing connection through the inner cavity, and a joint cover 503 sealingly connected to the inner cavity of the female joint 502 for covering the female joint 502 or expanding the opening size of the female joint 502. Can be sealed when not in use, thereby not affecting the use functions of other joints, and providing a closed inner cavity space for the sleeve 1. The adaptor cover 503 can be used for interconnecting the connectors with different calibers according to the requirement, so as to enlarge the application range and the use function. The medicine can be dispensed at the female joint 502 part according to the requirement, so that cross infection and pollution caused by frequent use of the infusion joint are avoided, and the use safety is improved. The connection pipe 501 and the female joint 502 are integrally formed. Alternatively, the integrated injection molding can be adopted, so that the structural integrity is good and the sealing performance is good. The connecting tube 501 extends into the female connector 502 and is secured to the inner sidewall of the female connector 502 cavity by a securing inner ring 504. The sealing property and the structural stability of the structure can be improved. An inner wall connection structure 505 for sealing connection fitting is provided on the inner wall surface of the female joint 502 at a portion between the fixed inner ring 504 and the opening of the female joint 502. To facilitate a structural seal connection.

As shown in fig. 1 and 4, in the present embodiment, the male joint assembly 6 includes a middle tube 601 connected to the inner cavity of the sleeve 1, a male joint 602 at the end of the middle tube 601, a joint sleeve 603 disposed outside the middle tube 601 and abutting against the side wall of the Yang Jietou 602, and a plug cover 604 sleeved outside the male joint 602 and abutting against the side wall surface of the joint sleeve 603 for covering the male joint 602 or the external connection of the male joint 602. Can form axial stable structural support, structural stability is good. The male connector 602 can realize the mutual connection of the outer sleeve connecting connectors with different structures, so that the practicability of the infusion sterilizer is improved. Optionally, the male connector assembly 6 comprises a middle tube 601 connected to the inner cavity of the sleeve 1, a male connector 602 at the end of the middle tube 601, and a connector sleeve 603 arranged outside the middle tube 601 and abutting against the side wall of Yang Jietou. Because the male connector 602 can realize self-locking of the passage through the spring 6022 and the conical plug 6021, the external connection head cover 604 is not required, and the male connector can be connected or switched through the external connection head cover 604 when external connection is required.

As shown in fig. 1 and 4, in this embodiment, a tapered plug 6021 is provided at an opening portion of the male connector 602. The conical plug 6021 is resiliently coupled to the interior cavity of Yang Jietou 602 by a spring 6022. The automatic sealing function of the conical plug 6021 is formed, and the structural tightness of the joint is ensured. When in use, the communication can be realized by only pressing the conical plug 6021. The side wall surfaces of both end portions of the tapered plug 6021 are respectively connected to the inner wall surface of the male connector 602 by sealing gaskets 6023. The tightness of the connecting part can be improved, and the radial structure limit is formed at the same time, so that the stable guiding effect on the axial movement of the conical plug 6021 is formed. The outer sidewall of the male fitting 602 is provided with an outer sealing connection 6024. The structural connectivity is improved, and the structural connection is facilitated.

As shown in fig. 1 and 4, in the present embodiment, the outer joint cover 604 includes an outer casing 6041 for being fitted outside the male joint 602, and an outer communication tube 6042 penetrating the outer casing 6041 in the axial direction of the outer casing 6041. Is convenient to be communicated with an external pipeline. The outer tube 6042 is fixed to the inner wall surface of the outer housing 6041 by an outer fixing ring 6043. The structural stability is good, and the bending resistance is good. An inner connection structure 6044 for mating connection with the male connector 602 is provided on the inner wall surface of the outer case 6041 at a position between the outer case fixing ring 6043 and the opening of the outer case 6041. And the structure interconnection is convenient. The outer connecting tube 6042, the outer fixing ring 6043 and the outer casing 6041 are integrated into a whole. The structure integrity is good, and the leakproofness is good. Preferably, the outer connecting tube 6042, the outer fixing ring 6043 and the outer casing 6041 may be integrally injection molded.

As shown in fig. 1 and 5, in this embodiment, the push rod 2 includes a cake end 201 for thumb pressing, a dowel bar 202 axially connected to a central axis of the cake end 201, long ribs 203 axially provided on a side wall of the dowel bar 202 and circumferentially uniformly distributed for ensuring bending strength and shearing strength of the dowel bar 202, and a tapered clamping joint 204 at a front end of the dowel bar 202 for fixedly connecting with the rubber packet head 3 and ensuring stable support in the rubber packet head 3. Optionally, the push rod 2 includes a cake end 201 for thumb pressing, a long rib 203 connected to the cake end 201 along a direction perpendicular to a surface of the cake end 201 for ensuring bending strength and shearing strength, and a tapered clamping joint 204 at a front end of the long rib 203 for fixedly connecting with the rubber packet head 3 and ensuring stable support in the rubber packet head 3, where the long ribs 203 are uniformly distributed along a circumferential direction and interconnected on a central axis of the push rod 2. The outer sidewall surface of the cookie end 201 is provided with anti-slip patterns 2011 for providing a tactile sensation for accurate pushing control. A notch 2031 for ensuring the pushing mechanical property of the push rod 2 and relieving the pushing resistance is formed on one side of the long ridge 203, which is attached to the inner wall surface of the sleeve 1. The front end of the long ridge 203 is also provided with a baffle 205 which covers the end of the long ridge 203. A clamping groove 206 for embedding the rubber packet head 3 on the conical clamping joint 204 and coating the conical clamping joint 204 is reserved between the baffle 205 and the conical clamping joint 204. One end of the long ridge 203, which is close to the cake end 201, is provided with a bevel edge 2032 for ensuring the pushing mechanical property of the push rod 2 and relieving pushing resistance.

As shown in fig. 1 and 6, in this embodiment, at least three sealing rings 301 circumferentially surrounding the outside of the ferrule 3 for sealing between the ferrule 3 and the sleeve 1 and ensuring the stability of the axial movement of the ferrule 3 are provided on the outer side surface of the ferrule 3. The inner cavity of the rubber packet head 3 is provided with a built-in groove 302 matched with the shape of the front end of the push rod 2. The front end face of the rubber toe cap 3 is provided with an external conical surface 303 which is matched with the front end of the inner cavity of the sleeve 1 and used for guaranteeing mechanical guidance during liquid pushing.

As shown in fig. 1 and 7, in the present embodiment, the sleeve 1 includes an outer edge 101 for finger pressing and a cylinder 102 for forming an internal cavity. The front end of the cylinder 102 is provided with a conical head 103 which is beneficial to exhaust when pushing liquid.

The disinfection method of the infusion disinfector adopts the infusion disinfector, and specifically comprises the following steps: closing the needle hub assembly 4 and opening the female hub assembly 5; the output joint of the disinfectant output device is communicated with the female joint component 5, and pulls the push rod 2 to the tail end of the sleeve 1 to draw in disinfectant; the front end of the sleeve 1 is upward, the needle joint assembly 4 and/or the male joint assembly 6 are opened, the push rod 2 is pushed to empty air bubbles in the sleeve 1, the needle joint assembly 4 and/or the male joint assembly 6 are closed, the push rod 2 is continuously pulled to suck disinfectant, and the process is repeated for a plurality of times until the air bubbles in the sleeve 1 disappear; the disinfectant stands still for full disinfection; disassembling an output joint of the disinfectant output device, opening the needle joint assembly 4 and/or the male joint assembly 6, pushing the push rod 2 to discharge the disinfectant in the inner cavity of the sleeve 1; the push rod 2 is repeatedly pushed and pulled to generate negative pressure of the inner cavity of the sleeve 1, so that disinfectants on the inner cavity surface of the sleeve 1, the inner cavity surface of the needle joint assembly 4, the inner cavity surface of the female joint assembly 5 and the inner cavity surface of the male joint assembly 6 are thoroughly dried and accelerated, and the problem that the inner cavity of the infusion sterilizer is long in waiting time after disinfection is solved.

In practice, an infusion sterilizer is provided, wherein the sterilizer adopts at least one of the following components:

(1) 75% aqueous isopropanol;

(2) chlorhexidine gluconate in ethanol solution (for infants with age < 2 months with cautions);

(3) iodophor with effective iodine concentration not lower than 0.5%;

(4) 2% iodine tincture solution and 75% alcohol;

(5) 2% chlorhexidine gluconate is compounded with 70% ethanol: quick acting, time saving and quick drying, enhanced dressing adhesion, long lasting antibacterial residual activity and convenient observation.

The infusion sterilizer comprises the following structures:

the push rod 2 comprises the following structural characteristics:

(1) the cake end 201 is provided with anti-skid patterns at the top of the thumb;

(2) the push rod 2 adopts four long ridges 203 to ensure the strength;

(3) gaps 2031 are formed in the four long ribs 203 of the push rod 2, the push rod 2 is easy to deviate due to the fact that the force is not on the central axis due to the long length of the push rod 2, and the gaps 2031 can ensure good mechanical property during pushing, pushing is smooth and not dry;

(4) a round cake-shaped baffle 205 which ensures that the rubber toe cap 3 can be stopped when assembled;

(5) the clamping groove 206 is used for assembling the clamping position of the rubber packet head 3;

(6) the conical clamping joint comprises a cake-shaped structure and a four-edge structure, and the cake-shaped structure is used for assembling the rubber packet head 3; the four-bar structure is tapered to ensure support within the rubber toe 3.

The rubber toe cap 3 comprises the following structural characteristics:

(1) three sealing rings, guarantee the seal;

(2) the front end is conical to ensure mechanical guidance during liquid pushing.

Sleeve 1, comprising the following structural features:

(1) the outer edge 101, the index finger and the middle finger press the pressing position;

(2) the cylinder 102 of the sleeve 1, the head of the cylinder 102 is conical, which is beneficial to exhaust when pushing liquid.

Needle hub assembly 4 comprising the following structural features:

(1) the straight-through head 401 is straight and can be used as an assembling and using position of the injection needle;

(2) the through cap 402 is closed with the through head 401 when not in use.

Female joint assembly 5 (fitted with adapter cover 503) comprising the following structural features:

(1) the female connector can be connected with a positive pressure connector of an infusion apparatus and the like;

(2) the adapter cover is closed with the female connector when not in use.

The male connector assembly 6 comprises the following structural features:

(1) a male connector 602;

(2) a sealing gasket 6023;

(3) a spring 6022;

(4) joint cover 603.

The invention relates to an infusion sterilizer, which is used for solving the problem of disinfectant soaking type sterilization (matched with disinfectant for use) of a universal needleless joint in infusion medical equipment; the device is used for solving the problem of long waiting time after disinfection, and the push rod is pulled manually to generate negative pressure so that the disinfectant on the surface of the disinfected joint is thoroughly dried and accelerated; avoid the disinfectant from immersing into the tissue during transfusion.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An infusion sterilizer comprises a sleeve (1) for containing medicament, a push rod (2) inserted into the inner cavity of the sleeve (1) and used for realizing negative pressure pushing by pushing in the inner cavity of the sleeve (1) to compress the volume of a closed space of the sleeve (1), and a rubber packet head (3) embedded at the front end of the push rod (2) and used for sealing between the push rod (2) and the sleeve (1),

it is characterized in that the method comprises the steps of,

the front end of the sleeve (1) is provided with a needle joint component (4) for exhausting, draining or connecting an injection needle, a female joint component (5) for connecting with a positive pressure joint of an infusion apparatus to inject disinfectant or medicament, and a male joint component (6) for opening by axial pressing to inject disinfectant, inject medicament or exhaust;

the needle joint assembly (4) comprises a through head (401) communicated to the inner cavity of the sleeve (1) and a through cover (402) which is spliced and covered on an opening of the through head (401); the through cover (402) is connected with the side wall of the through head (401) into a whole through a connecting piece (403); the inner cavity of the through head (401) is provided with a flaring hole cavity (404) with the radial size gradually decreasing from outside to inside;

the female joint assembly (5) comprises a connecting pipe (501) communicated with the inner cavity of the sleeve (1), a female joint (502) arranged at the pipe end of the connecting pipe (501) and used for being connected in a sealing way through the inner cavity, and a switching head cover (503) which is connected in the inner cavity of the female joint (502) in a sealing way and used for sealing the female joint (502) or expanding the opening size of the female joint (502); the connecting pipe (501) and the female joint (502) are of an integral structure, and the connecting pipe (501) stretches into the female joint (502) and is fixed on the inner side wall of the inner cavity of the female joint (502) through a fixed inner ring (504); an inner wall connecting structure (505) for sealing connection assembly is arranged on the inner wall surface of the female joint (502) at the part between the fixed inner ring (504) and the opening of the female joint (502);

the male joint assembly (6) comprises a middle pipe (601) communicated to the inner cavity of the sleeve (1), a male joint (602) arranged at the end part of the middle pipe (601), a joint sleeve (603) arranged outside the middle pipe (601) and propped against the side wall of the male joint (602), and an external joint cover (604) sleeved outside the male joint (602) and propped against the side wall surface of the joint sleeve (603) for sealing the male joint (602) or externally connected with the male joint (602).

2. The infusion sterilizer of claim 1, wherein,

a conical plug (6021) is arranged at the opening part of the male connector (602),

the conical plug (6021) is elastically connected in the inner cavity of the male connector (602) through a spring (6022),

the side wall surfaces of the two end parts of the conical plugs (6021) are respectively connected with the inner wall surface of the male connector (602) in a sealing way through sealing gaskets (6023);

the outer side wall of the male joint (602) is provided with an outer sealing connection structure (6024).

3. The infusion sterilizer of claim 1, wherein,

the external joint cover (604) comprises an outer sleeve (6041) sleeved outside the male joint (602) and an outer through pipe (6042) penetrating through the outer sleeve (6041) along the axial direction of the outer sleeve (6041),

the outer connecting pipe (6042) is fixed on the inner wall surface of the outer sleeve shell (6041) through the outer sleeve fixing ring (6043),

an inner connecting structure (6044) for matching connection with the male connector (602) is arranged at the position of the inner wall surface of the outer sleeve shell (6041) between the outer sleeve fixing ring (6043) and the opening of the outer sleeve shell (6041);

the outer connecting pipe (6042), the outer sleeve fixing ring (6043) and the outer sleeve shell (6041) are of an integral structure.

4. An infusion sterilizer as claimed in any one of claims 1 to 3, wherein,

the push rod (2) comprises a cake end (201) for thumb pressing, a dowel bar (202) axially connected to the central shaft of the cake end (201), long ribs (203) axially arranged on the side wall of the dowel bar (202) and circumferentially uniformly distributed to ensure bending strength and shearing strength of the dowel bar (202), and a conical clamping joint (204) positioned at the front end of the dowel bar (202) and fixedly connected with the rubber packet head (3) in a embedding manner and ensuring stable support in the rubber packet head (3); or alternatively

The push rod (2) comprises a round cake end (201) used for being pressed by a thumb, a long rib (203) which is connected to the round cake end (201) along the surface vertical direction of the round cake end (201) and used for guaranteeing bending strength and shearing strength, and a conical clamping joint (204) which is positioned at the front end of the long rib (203) and used for being fixedly connected with the rubber packet head (3) and guaranteeing stable support in the rubber packet head (3), wherein a plurality of the long ribs (203) are uniformly distributed along the circumferential direction and are interconnected on the central axis of the push rod (2);

the outer side wall surface of the cake end (201) is provided with anti-skid patterns (2011) for providing touch sense to accurately push and control,

a notch (2031) for ensuring the pushing mechanical property of the push rod (2) and relieving pushing resistance is formed in one side, which is attached to the inner wall surface of the sleeve (1), of the long rib (203);

the front end of the long ridge (203) is also provided with a baffle (205) which covers the end part of the long ridge (203),

a clamping groove (206) for embedding the rubber packet head (3) on the conical clamping joint (204) and coating the conical clamping joint (204) is reserved between the baffle (205) and the conical clamping joint (204);

one end of the long ridge (203) close to the cake end (201) is provided with a bevel edge (2032) for guaranteeing pushing mechanical property of the push rod (2) and relieving pushing resistance.

5. An infusion sterilizer as claimed in any one of claims 1 to 3, wherein,

at least three sealing rings (301) which are circumferentially encircling the rubber packet head (3) and are used for sealing between the rubber packet head (3) and the sleeve (1) and ensuring the axial movement stability of the rubber packet head (3) are arranged on the outer side surface of the rubber packet head (3);

the inner cavity of the rubber packet head (3) is provided with a imbedding groove (302) matched with the shape of the front end of the push rod (2),

the front end face of the rubber packet head (3) is arranged to be matched with the front end of the inner cavity of the sleeve (1) to ensure the outer conical surface (303) of mechanical guidance during liquid pushing.

6. An infusion sterilizer as claimed in any one of claims 1 to 3, wherein,

the sleeve (1) comprises an outer rim (101) for finger pressure and a barrel (102) for forming an internal cavity;

the front end of the cylinder body (102) is provided with a conical head (103) which is beneficial to exhaust during liquid pushing.

7. A disinfection method of an infusion sterilizer is characterized in that,

the infusion sterilizer of any one of claim 1 to 6,

the method specifically comprises the following steps:

closing the needle hub assembly (4) and opening the female hub assembly (5); the output joint of the disinfectant output device is communicated with the female joint component (5), and pulls the push rod (2) to the tail end of the sleeve (1) to draw in disinfectant;

the front end of the sleeve (1) faces upwards, the needle joint assembly (4) and/or the male joint assembly (6) are opened, the push rod (2) is pushed to empty air bubbles in the sleeve (1), the needle joint assembly (4) and/or the male joint assembly (6) are closed, the push rod (2) is continuously pulled to suck disinfectant, and the operation is repeated for a plurality of times until the air bubbles in the sleeve (1) disappear;

the disinfectant stands still for full disinfection;

disassembling an output joint of the disinfectant output device, opening a needle joint assembly (4) and/or a male joint assembly (6), pushing a push rod (2) to discharge the disinfectant in the inner cavity of the sleeve (1);

the push rod (2) is repeatedly pushed and pulled to generate negative pressure of the inner cavity of the sleeve (1), so that disinfectants on the inner cavity surface of the sleeve (1), the inner cavity surface of the needle joint assembly (4), the inner cavity surface of the female joint assembly (5) and the inner cavity surface of the male joint assembly (6) are thoroughly dried and accelerated, and the problem that the inner cavity of the infusion sterilizer is long in waiting time after disinfection is solved.