CN105126193B

CN105126193B - Inner core rod for core rod of pre-filling type catheter flusher

Info

Publication number: CN105126193B
Application number: CN201410223171.0A
Authority: CN
Inventors: 刘安东; 梁博秦; 李云豹; 李昌鑫
Original assignee: Shanghai Kangdelai Enterprise Development Group Co Ltd
Current assignee: Shanghai Kangdelai Enterprise Development Group Co Ltd
Priority date: 2014-05-26
Filing date: 2014-05-26
Publication date: 2022-09-02
Anticipated expiration: 2034-05-26
Also published as: CN105126193A

Abstract

The invention discloses an inner core rod for a core rod of a prefilled catheter flusher, which comprises an inner core rod body and an inner core rod handle, wherein a medicine accommodating groove arranged along the radial direction is arranged on the side wall of the front end part of the inner core rod body, a first sealing ring and a second sealing ring are arranged on the outer wall of the inner core rod body, the rear end part of the inner core rod body is arranged in the inner core rod handle, a first clamping groove, a second clamping groove and a clamping protrusion are arranged between the inner core rod handle and the inner core rod handle, and a third clamping protrusion is arranged on the inner core rod handle. The core rod is composed of the inner core rod and the matched outer core rod, the core rod is arranged in the matched outer sleeve for use, the pre-mixing of the normal saline and the medicine can be realized, the therapeutic medicine is infused into a pipeline system in the process of flushing the pipeline, meanwhile, the mixing of the medicine and the normal saline is stopped inside the catheter flusher, other puncture is not needed, and the pollution to the medicine is greatly reduced.

Description

Inner core rod for core rod of pre-filling type catheter flusher

Technical Field

The invention relates to a medical instrument, in particular to an inner core rod for a core rod of a prefilled catheter flusher.

Background

At present, after the medicine is injected through the indwelling needle, the indwelling needle catheter is generally washed by normal saline, but the normal saline can only be used for simple pipeline washing and cannot play any treatment role, and if the normal saline added with the medicine is used for washing, the medicine needs to be punctured for the bottle stopper through the medicine dispensing in the medicine dispensing process, and the rubber on the bottle stopper can generate fragments in the puncturing process to cause pollution to the medicine, so that the medicine cannot be paid back.

Therefore, one of the problems that the skilled person is addressing is how to achieve pre-mixing of saline and drug and infusion of therapeutic drug into the tubing system during flushing of the tubing.

Disclosure of Invention

The invention aims to solve the problems and provides a core rod for a prefilled catheter flusher core rod, which has a simple structure and is convenient to use.

The purpose of the invention is realized as follows:

the inner core rod for the core rod of the pre-charging type catheter flusher comprises an inner core rod body and an inner core rod handle connected with the rear end of the inner core rod body, wherein a medicine containing groove arranged along the radial direction is formed in the side wall of the front end part of the inner core rod body, a first sealing ring groove and a second sealing ring groove are respectively formed in the outer wall of the inner core rod body, a first sealing ring is embedded in the first sealing ring groove, a second sealing ring is embedded in the second sealing ring groove, the first sealing ring is positioned above the medicine containing groove, and the second sealing ring is positioned below the medicine containing groove;

the inner core rod is provided with an inner core rod body accommodating cavity for accommodating the rear end part of the inner core rod body by hand, the inner wall of the inner core rod body accommodating cavity is provided with a first clamping groove and a second clamping groove respectively, and the outer wall of the inner core rod body is provided with a first clamping protrusion clamped in the first clamping groove and a second clamping protrusion clamped in the second clamping groove respectively;

and a third clamping protrusion is arranged on the outer wall of the inner core rod handle.

The inner core rod for the core rod of the pre-filled catheter flusher is characterized in that a third sealing ring groove is further formed in the outer wall of the inner core rod body, a third sealing ring is embedded in the third sealing ring groove, and the third sealing ring is located between the medicine containing groove and the second sealing ring.

The core rod is composed of the inner core rod and the matched outer core rod, the core rod is arranged in the matched outer sleeve for use, the pre-mixing of the normal saline and the medicine can be realized, the therapeutic medicine is infused into a pipeline system in the process of flushing the pipeline, meanwhile, the mixing of the medicine and the normal saline is stopped inside the catheter flusher, other puncture is not needed, and the pollution to the medicine is greatly reduced.

The medical nursing bed is simple in structure and convenient to use, and the working efficiency of medical workers is greatly improved.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the body of the inner core rod of the present invention;

FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a sectional view of the plunger rod presser in the present invention.

Detailed Description

The invention will be further explained with reference to the drawings.

Referring to fig. 1 to 4, there is shown an inner core rod 1 for a core rod of a prefilled catheter flusher according to the present invention, which comprises an inner core rod body 2 and an inner core rod handle 3 connected to a rear end of the inner core rod body 2, wherein a medicine accommodating groove 21 is radially formed on a side wall of a front end portion of the inner core rod body 2, a first sealing ring groove 221 is sequentially formed on an outer wall of the inner core rod body 2 and along an axial direction of the inner core rod body 3 from top to bottom, a third seal ring 241 and a second seal ring 231, wherein a first seal ring 22 is embedded in the first seal ring groove 221, a third seal ring 24 is embedded in the third seal ring groove 241, a second seal ring 23 is embedded in the second seal ring groove 231, the first seal ring 22 is positioned above the medicine containing groove 21, the second seal ring 23 is positioned below the medicine containing groove 21, and the third seal ring 24 is positioned between the second seal ring 33 and the lower part of the medicine containing groove 31;

an inner core rod body accommodating cavity 31 with an opening at the upper end is arranged in the inner core rod handle 3, the rear end part of the inner core rod body 3 is arranged in the inner core rod body accommodating cavity 31, a first clamping groove 33 and a second clamping groove 32 are sequentially arranged on the inner wall of the inner core rod body accommodating cavity 31 and along the axial direction of the inner core rod handle 3 from top to bottom, and a first clamping protrusion 26 clamped in the first clamping groove 33 and a second clamping protrusion 25 clamped in the second clamping groove 32 are respectively arranged on the outer wall of the inner core rod body 3;

the outer wall of the inner core rod handle 3 is provided with a third clamping protrusion 34;

the core rod can be combined with a matched outer core rod to form a core rod, the outer core rod is provided with an axially through cavity, the inner core rod can be slidably arranged in the cavity of the outer core rod, and the inner wall of the cavity is provided with a third clamping groove which is clamped and matched with the third clamping protrusion 34;

the solid medicine can be stored in the medicine containing groove 31 of the invention, and after the solid medicine and the outer core rod form the core rod, the solid medicine and the matched jacket with the physiological saline stored in the inner cavity are used together, so that the pre-mixing of the physiological saline and the medicine can be realized, the therapeutic medicine is infused into the pipeline system in the process of flushing the pipeline, the other puncture is avoided, and the pollution to the medicine is reduced.

When the medical device is not used, the first clamping protrusion 26 is positioned in the first clamping groove 33, the second clamping protrusion 25 is positioned in the second clamping groove 32, the third clamping protrusion 34 is separated from the third clamping groove and positioned below the third clamping groove, the front end face of the inner core rod body 2 is flush with the opening of the cavity positioned at the front end, the medicine containing groove 21 is positioned in the cavity, the solid medicine is stored in the medicine containing groove 21 at the moment, the physiological saline in the matched jacket can be prevented from contacting the solid medicine due to the sealing effect of the first sealing ring 22, and the second sealing ring 23 and the third sealing ring 24 are prevented from leaking out of the lower end of the cavity when the sealing function of the first sealing ring 22 is failed;

when the inner core rod handle 3 is pushed forwards until the lower end face of the inner core rod handle is flush with the lower end face of the outer core rod, the inner core rod handle is in a liquid medicine mixing state, at the moment, the first clamping protrusion 26 is positioned in the first clamping groove 33, the second clamping protrusion 25 is positioned in the second clamping groove 32, the third clamping protrusion 34 is positioned in the third clamping groove, the medicine containing groove 21 completely extends out of the cavity from the upper end face of the outer core rod, the second sealing ring 23 and the third sealing ring 24 are still positioned in the cavity, at the moment, the solid medicine in the medicine containing groove 21 is contacted with the physiological saline in the matched outer sleeve and dissolved in the physiological saline to form mixed liquid medicine, and the sealing effect of the second sealing ring 23 and the third sealing ring 24 can prevent the mixed liquid medicine from leaking out of the lower end of the cavity.

After the solid medicine is completely dissolved, the mixed liquid medicine is injected into the device to be washed for washing according to the actual use requirement.

The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.

Claims

1. An inner core rod for a core rod of a prefilled catheter flusher is characterized in that the inner core rod comprises an inner core rod body and an inner core rod press handle connected with the rear end of the inner core rod body, a medicine containing groove arranged along the radial direction is formed in the side wall of the front end part of the inner core rod body, a first sealing ring groove and a second sealing ring groove are respectively formed in the outer wall of the inner core rod body, a first sealing ring is embedded in the first sealing ring groove, a second sealing ring is embedded in the second sealing ring groove, the first sealing ring is located above the medicine containing groove, and the second sealing ring is located below the medicine containing groove;

the outer wall of the inner core rod handle is provided with a third clamping protrusion;

the inner core rod and a matched outer core rod form a core rod, the core rod is arranged in a matched outer sleeve for use, the outer core rod is provided with a cavity body which is axially communicated, the inner core rod is slidably arranged in the cavity body of the outer core rod, and the inner wall of the cavity body is provided with a third clamping groove which is in clamping fit with the third clamping protrusion;

when the inner core rod is not used, the first clamping protrusion is positioned in the first clamping groove, the second clamping protrusion is positioned in the second clamping groove, the third clamping protrusion is separated from the third clamping groove and positioned below the third clamping groove, the front end surface of the inner core rod body is flush with the opening of the cavity positioned at the front end, and the medicine accommodating groove is positioned in the cavity;

when the inner core rod is pushed forwards until the lower end face of the inner core rod is flush with the lower end face of the outer core rod, the inner core rod is in a liquid medicine mixing state, the first clamping protrusion is located in the first clamping groove, the second clamping protrusion is located in the second clamping groove, the third clamping protrusion is located in the third clamping groove, and the medicine containing groove completely extends out of the cavity from the upper end face of the outer core rod.

2. A mandrel for a pre-filled catheter flusher mandrel as set forth in claim 1, wherein said mandrel body further includes a third sealing ring groove on an outer wall thereof, a third sealing ring being embedded in said third sealing ring groove, said third sealing ring being located between said drug containing groove and said second sealing ring.