阅读说明：本技术 无针加药药液过滤器 (Needleless medicine adding liquid medicine filter ) 是由 简玉梅 刘方文 田军 陈来龙 梅绍伟 邱博 杨剑 卫彦伟 周建 于 2021-07-21 设计创作，主要内容包括：一种无针加药药液过滤器,包括上壳体和下壳体,以及过滤膜,上壳体的顶部设有进液通道、外壁上设有加药通道,上壳体的内部嵌设有弹性密封元件。本发明通过无针注射器注射的药液在加药通道对弹性密封元件进行挤压,以使弹性密封元件与上壳体的内壁之间形成供药液通过的避让间隙,以缩短加入的药液在输液软管中的流动距离,从而提高送药效率,即将添加药物快速输入患者体内,以及时医治患者；当加完药且拔出无针注射器后,弹性密封元件的挤压部位在自身弹性回复力的作用下,恢复至初始位置,以实现密封功能。使得整个加药过程,不需钢针穿刺可以直接加药,可避免医护人员钢针刺伤伤害和针尖刺伤导致的血源性感染。(A needleless medicine-adding liquid medicine filter comprises an upper shell, a lower shell and a filtering membrane, wherein a liquid inlet channel is arranged at the top of the upper shell, a medicine-adding channel is arranged on the outer wall of the upper shell, and an elastic sealing element is embedded in the upper shell. The medicine liquid injected by the needleless injector extrudes the elastic sealing element in the medicine adding channel, so that an avoiding gap for the medicine liquid to pass is formed between the elastic sealing element and the inner wall of the upper shell, the flowing distance of the added medicine liquid in the infusion hose is shortened, and the medicine feeding efficiency is improved, namely the added medicine is quickly input into a patient, and the patient is timely treated; after the medicine is added and the needleless injector is pulled out, the extrusion part of the elastic sealing element is restored to the initial position under the action of the self elastic restoring force, so as to realize the sealing function. The whole medicine adding process can directly add medicine without steel needle puncture, and can avoid blood-borne infection caused by steel needle puncture injury and needle point puncture injury of medical personnel.)

1. The utility model provides a needleless adds medicine liquid medicine filter for on the infusion hose of transfusion system, including last casing and lower casing that are connected, and the card filter membrane between last casing and the lower casing, its characterized in that: go up the top of casing and be equipped with on inlet channel, the outer wall and add the medicine passageway, the inside of going up the casing is inlayed and is equipped with and is used for the shutoff add the elastic sealing element of medicine passageway, when adding medicine, the liquid medicine of injecting through needleless injector is in it is right to add the medicine passageway elastic sealing element extrudees, so that elastic sealing element with form the clearance of dodging that supplies the liquid medicine to pass through between the inner wall of last casing.

2. The needle-free medicated liquid filter of claim 1 wherein the medicated channel is located on an outer sidewall of the upper housing and is integrally formed with the upper housing;

the elastic sealing element is of a thin-wall cylindrical structure, is embedded at the bottom of the liquid inlet channel and is coaxially arranged with the liquid inlet channel.

3. The needleless drug-adding liquid medicine filter of claim 1, wherein a drug-adding hole is formed on the outer side wall of the upper shell, and a limiting part is embedded in the drug-adding hole;

a dosing element is bonded at the outer end of the dosing hole, the dosing element is of a hollow structure, and a dosing channel is formed between the dosing element and the dosing hole;

the elastic sealing element is of a sheet-shaped structure and clamped between the limiting part and the dosing element, and when dosing is carried out, the edge of the elastic sealing element is separated from the dosing element so as to form an avoiding gap for liquid medicine to pass through.

4. The needle-free medicated liquid filter according to claim 3, wherein the limiting portion is a straight, cross or triangular star structure.

5. The needleless drug adding filter of claim 1, wherein an elastic sealing element is embedded in the drug adding channel, and when drug is added, the elastic sealing element is pressed by a needleless injector in the drug adding channel, so that an avoiding gap for passing the drug solution is formed between the elastic sealing element and the inner wall of the upper shell.

6. The needleless drug adding liquid medicine filter of claim 5, wherein the outer side wall of the upper shell is externally convex to form a mounting part, and the mounting part is provided with a drug adding hole and an exhaust hole;

a dosing element is bonded at the outer end of the dosing hole and is of a hollow structure;

the elastic sealing element is of a thin-wall U-shaped structure and comprises a U-shaped opening part and a blocking part formed by protruding a U-shaped bottom part, the U-shaped opening part is clamped on the mounting part, and the blocking part blocks the dosing element;

the exhaust hole is communicated with the U-shaped inner cavity of the elastic sealing element and the external air pressure, and the dosing hole is communicated with the inside of the upper shell and the inner wall of the dosing element.

7. The needle-free medicated liquid filter according to claim 6, wherein a recess is provided on an outer wall of the blocking portion.

8. The needleless drug-adding liquid medicine filter according to claim 1, wherein an elastic sealing element is embedded in the drug-adding channel, and a blocking seam is arranged at the end of the elastic sealing element, so that the blocking seam is opened by a needleless injector when drug is added, so that the needleless injector is communicated with the inside of the upper shell.

9. The needle-free drug adding liquid medicine filter according to claim 8, wherein the outer side wall of the upper housing is convex to form a mounting portion, the mounting portion is provided with a drug adding hole, and the drug adding hole is communicated with the interior of the upper housing;

a dosing element is bonded at the outer end of the dosing hole and is of a hollow structure;

the elastic sealing element is of a thin-wall U-shaped structure and comprises a U-shaped opening part and a blocking part formed by protruding out of the U-shaped bottom part, the U-shaped opening part is clamped on the installation part, the medicine adding element is blocked by the blocking part, and the blocking seam is located on the blocking part.

10. The needle-free medicated liquid filter according to any one of claims 1 to 9, wherein the needle-free medicated liquid filter acts as a needle-free medicated tee when the filter membrane is removed.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a needleless dosing liquid medicine filter.

Background

The existing liquid medicine filter mainly comprises a shell and a filtering membrane, can be used for filtering particles with the particle size of more than 5um in liquid medicine, and has the filtering rate of not less than 90 percent. The existing liquid medicine filter does not have a direct medicine adding function, but additionally sets a medicine adding device at the dropping funnel for adding medicine, but after the liquid medicine is added into the dropping funnel, the liquid medicine is mixed with original liquid medicine in the dropping funnel, and then enters the inside of a human body along an overlong infusion pipeline after sequentially passing through a flow rate regulator, a liquid medicine filter, a vein needle and other structures, so that the medicine feeding efficiency is low, and when an emergency situation is met, the liquid medicine is input too slowly, and the state of an illness of a patient is not facilitated. Or a three-way medicine adding piece is connected between the dropping funnel and the existing liquid medicine filter, but the mode is not convenient for the automatic assembly of the infusion apparatus, thereby reducing the production efficiency.

Disclosure of Invention

Based on this, the invention aims to provide a needleless medicine-adding liquid medicine filter, which is convenient for quick medicine adding and improves the medicine-feeding efficiency.

The utility model provides a needleless adds medicine liquid medicine filter for on the infusion hose of transfusion system, including last casing and lower casing that are connected, and the card be in go up the casing and down filtration membrane between the casing, the top of going up the casing is equipped with inlet channel, is equipped with on the outer wall and adds the medicine passageway, the inside of going up the casing is inlayed and is equipped with and is used for the shutoff add the elastic sealing element of medicine passageway, when adding medicine, is in through the liquid medicine that needleless injector injected add the medicine passageway right elastic sealing element extrudees, so that elastic sealing element with form the clearance of dodging that supplies the liquid medicine to pass through between the inner wall of last casing.

Compared with the prior art, in the invention, the liquid medicine injected by the needleless injector extrudes the elastic sealing element in the medicine feeding channel, so that an avoiding gap for the liquid medicine to pass is formed between the elastic sealing element and the inner wall of the upper shell, the flowing distance of the added liquid medicine in the infusion hose is shortened, and the medicine feeding efficiency is improved, namely, the added medicine is quickly fed into the body of a patient, and the patient is treated; after the medicine is added and the needleless injector is pulled out, the extrusion part of the elastic sealing element is restored to the initial position under the action of the self elastic restoring force, so that the sealing function is realized. The whole medicine adding process can directly add medicine without steel needle puncture, and can avoid blood-borne infection caused by steel needle puncture injury and needle point puncture injury of medical personnel. In addition, through will filtering and add two functions of medicine and integrate simultaneously on this liquid medicine filter, the automatic equipment of transfusion system of can being convenient for to improve production efficiency.

Further, the medicine feeding channel is positioned on the outer side wall of the upper shell and is integrally formed with the upper shell;

the elastic sealing element is of a thin-wall cylindrical structure, is embedded at the bottom of the liquid inlet channel and is coaxially arranged with the liquid inlet channel.

Furthermore, a dosing hole is formed in the outer side wall of the upper shell, and a limiting part is embedded in the dosing hole;

a dosing element is bonded at the outer end of the dosing hole, the dosing element is of a hollow structure, and a dosing channel is formed between the dosing element and the dosing hole;

the elastic sealing element is of a sheet-shaped structure and clamped between the limiting part and the dosing element, and when dosing is carried out, the edge of the elastic sealing element is separated from the dosing element so as to form an avoiding gap for liquid medicine to pass through.

Furthermore, the limiting part is of a straight-line type, cross type or triangular star type structure.

Furthermore, an elastic sealing element is embedded in the medicine feeding channel, and when medicine is fed, the medicine feeding channel extrudes the elastic sealing element through a needleless injector, so that an avoiding gap for the medicine liquid to pass through is formed between the elastic sealing element and the inner wall of the upper shell.

Furthermore, the outer side wall of the upper shell is convexly provided with an installation part, and the installation part is provided with a dosing hole and an exhaust hole;

a dosing element is bonded at the outer end of the dosing hole and is of a hollow structure;

the elastic sealing element is of a thin-wall U-shaped structure and comprises a U-shaped opening part and a blocking part formed by protruding a U-shaped bottom part, the U-shaped opening part is clamped on the mounting part, and the blocking part blocks the dosing element;

the exhaust hole is communicated with the U-shaped inner cavity of the elastic sealing element and the external air pressure, and the dosing hole is communicated with the inside of the upper shell and the inner wall of the dosing element.

Furthermore, a recess is arranged on the outer wall of the plugging part.

Furthermore, an elastic sealing element is embedded in the medicine feeding channel, a blocking seam is arranged at the end part of the elastic sealing element, and when medicine is fed, the blocking seam is opened through a needleless injector so that the needleless injector is communicated with the inside of the upper shell.

Furthermore, the outer side wall of the upper shell is convexly provided with an installation part, the installation part is provided with a dosing hole, and the dosing hole is communicated with the inside of the upper shell;

a dosing element is bonded at the outer end of the dosing hole and is of a hollow structure;

the elastic sealing element is of a thin-wall U-shaped structure and comprises a U-shaped opening part and a blocking part formed by protruding out of the U-shaped bottom part, the U-shaped opening part is clamped on the installation part, the medicine adding element is blocked by the blocking part, and the blocking seam is located on the blocking part.

Further, when the filtering membrane is removed, the needleless drug-adding liquid medicine filter can be used as a needleless drug-adding tee joint.

Drawings

FIG. 1 is a schematic view of a needleless drug administration filter according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the needleless dosing drug solution filter of FIG. 1;

FIG. 3 is a schematic view of a needleless drug delivery filter according to a second embodiment of the present invention;

FIG. 4 is a cross-sectional view of the needleless dosing drug solution filter of FIG. 3;

FIG. 5 is a cross-sectional view of a needle-free medicated filter according to a third embodiment of the present invention;

FIG. 6 is a cross-sectional view of a needle-free medicated filter of a fourth embodiment of the present invention;

FIG. 7 is a cross-sectional view of a needle-free medicated filter of a fifth embodiment of the present invention;

fig. 8 is a right side view of a fifth embodiment of a needleless drug delivery filter of the present invention.

Description of the main element symbols:

the following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a needleless medication liquid medicine adding filter provided in an embodiment of the present invention is used for a flexible infusion tube of an infusion apparatus, and includes an upper housing 10 and a lower housing 11 connected to each other, and a filtering membrane 12 clamped between the upper housing 10 and the lower housing 11, a liquid inlet channel 101 is disposed at the top of the upper housing 10, a medicine adding channel 102 is disposed on an outer wall of the upper housing 10, an elastic sealing element 13 for blocking the medicine adding channel 102 is embedded in the upper housing 10, and when medicine is added, liquid medicine injected by a needleless injector extrudes the elastic sealing element 13 in the medicine adding channel 102, so that an avoiding gap for allowing liquid medicine to pass through is formed between the elastic sealing element 13 and an inner wall of the upper housing 10.

In the present invention, the elastic sealing element 13 is in interference fit with the inside of the upper housing 10, so as to prevent the elastic sealing element from falling off. The elastic sealing element 13 is made of rubber or silica gel, so that the elastic sealing element has elastic restoring force. The upper shell 10 and the lower shell 11 are bonded through glue, connected through UV light curing, and subjected to ultrasonic welding or laser welding. The filtering membrane 12 can filter the liquid medicine, can filter particles with the diameter of more than 5 microns, has the characteristics of strong pollutant carrying capacity, regular and uniform filtering holes, no foreign matter falling, small medicine adsorption, good medicine compatibility and the like, and can filter out air bubbles, foreign matters, impurities and other substances.

Specifically, in the present invention, the liquid medicine injected by the needleless injector extrudes the elastic sealing element 13 in the medicine feeding channel 102, so that an avoiding gap for the liquid medicine to pass through is formed between the elastic sealing element 13 and the inner wall of the upper housing 10, so as to shorten the flowing distance of the added liquid medicine in the infusion hose, thereby improving the medicine feeding efficiency, i.e. the medicine to be added is quickly fed into the patient, and the patient is treated; after the medicine is added and the needleless injector is pulled out, the extrusion part of the elastic sealing element 13 is restored to the initial position under the action of the self elastic restoring force, so as to realize the sealing function.

Referring to fig. 1 and 2, the medicine feeding channel 102 is located on an outer side wall of the upper housing 10 and is integrally formed with the upper housing 10;

elastic sealing element 13 is thin-walled cylinder type structure, and inlays and locate inlet channel 101's bottom, and with inlet channel 101 coaxial setting to when not adding the medicine, do not influence the infusion in the inlet channel 101.

In this embodiment, when no medicine is added, the thin wall of the elastic sealing element 13 is attached to the inner wall of the upper housing 10 to realize a sealing function; when medicine is added, the thin-wall part of the elastic sealing element 13 at the medicine adding channel 102 is extruded and separated from the inner wall of the upper shell 10, so that an avoiding gap for the liquid medicine to pass through is formed.

Referring to fig. 1 and 2, the outer end of the drug feeding channel 102 is provided with a protective cap 14, the protective cap 14 is sleeved on the drug feeding channel 102, and the drug feeding channel 102 is isolated from the outside by the protective cap 14 for protection.

Referring to fig. 3 and 4, in the embodiment of the needleless drug-adding liquid medicine filter according to the second embodiment of the present invention, the protective cap 14a and the drug-adding channel 102 are integrally formed, so that the assembling steps can be reduced, and the efficiency can be improved.

Referring to fig. 5, in a third embodiment of the present invention, a needleless drug-adding liquid medicine filter is provided, in this embodiment, a drug adding hole 103 is formed on an outer side wall of the upper housing 10, and a limiting portion 104 is embedded in the drug adding hole 103;

a dosing element 15 is bonded at the outer end of the dosing hole 103, the dosing element 15 is of a hollow structure, and a dosing channel is formed between the dosing element 15 and the dosing hole 103;

the elastic sealing element 13b is of a sheet-like structure so as to be extruded and clamped between the limiting part 104 and the dosing element 15, and when dosing is carried out, the edge of the elastic sealing element 13b is separated from the dosing element 15 so as to form an avoiding gap for the liquid medicine to pass through.

In this embodiment, when no medicine is added, under the pressure of the liquid medicine in the liquid inlet channel 101, the edge of the elastic sealing element 13b is attached to the medicine adding element 15, so as to realize a sealing function and prevent the liquid medicine from being discharged; when medicine is added, under the pressure of the liquid medicine injected by the needleless injector, the edge of the elastic sealing element 13b is separated from the medicine adding element 15, so that an avoiding gap for the liquid medicine to pass through is formed.

Further, the limiting portion 104 is a straight, cross or triangular star structure to block the elastic sealing element 13b to prevent the elastic sealing element from falling off.

Referring to fig. 6, in a third embodiment of the present invention, an elastic sealing element 13c is embedded in the drug adding channel, and when adding drug, the elastic sealing element 13c is pressed by a needleless injector in the drug adding channel, so that an avoiding gap for passing the drug solution is formed between the elastic sealing element 13c and the inner wall of the upper housing 10.

Specifically, in this embodiment, the outer side wall of the upper housing 10 is convex to form a mounting portion 105, and the mounting portion 105 is provided with a dosing hole 103c and an exhaust hole 106;

a dosing element 15c is bonded at the outer end of the dosing hole 103c, and the dosing element 15c is of a hollow structure;

the elastic sealing element 13c is of a thin-wall U-shaped structure and comprises a U-shaped opening part 13c1 and a blocking part 13c2 formed by protruding a U-shaped bottom part, the U-shaped opening part 13c1 is clamped on the mounting part 105, and the blocking part 13c2 blocks the dosing element 15 c;

the exhaust hole 106 is communicated with the U-shaped inner cavity of the elastic sealing element 13c and the external air pressure, and the dosing hole 103c is communicated with the inside of the upper shell 10 and the inner wall of the dosing element 15 c.

In this embodiment, when medicine is administered, the needleless injector presses the blocking portion 13c2 from the medicine administration channel, and the air in the U-shaped inner cavity is discharged from the air discharge hole 106 by the pushing of the blocking portion 13c2, so that the U-shaped opening portion 13c1 contracts, and the medicine administration hole 103c communicates the inside of the upper housing 10 and the inner wall of the medicine administration member 15 c.

Further, the outer wall of the blocking portion 13c2 is provided with a recess, which can facilitate the pressing of the elastic sealing element 13c by the needleless injector.

Referring to fig. 7 and 8, in a third embodiment of the present invention, an elastic sealing element 13d is embedded in the drug adding channel, a blocking slit 13d0 is formed at an end of the elastic sealing element 13d, and when drug is added, the blocking slit 13d0 is opened by a needle-free injector, so that the needle-free injector communicates with the inside of the upper housing 10.

In this embodiment, when the medicine is not added, the blocking seam 13d0 is in a closed state under the self-acting force of the elastic sealing element 13d, so as to realize a sealing function; when the medicine is to be administered, the needleless injector is used to open the blocking slit 13d0 so that the needleless injector communicates with the inside of the upper case 10, thereby administering the medicine.

Referring to fig. 7 and 8, specifically, an installation portion 105d is formed on an outer side wall of the upper housing 10 in an outward convex manner, a dosing hole 103d is formed in the installation portion 105d, and the dosing hole 103d is communicated with the inside of the upper housing 10;

a dosing element 15d is bonded at the outer end of the dosing hole 103d, and the dosing element 15d is of a hollow structure;

the elastic sealing element 13d is of a thin-wall U-shaped structure and comprises a U-shaped opening part 13d1 and a blocking part 13d2 formed by protruding a U-shaped bottom part, the U-shaped opening part 13d1 is clamped on the mounting part 105d, the blocking part 13d2 blocks the medicine adding element 15d, and the blocking seam 13d0 is located on the blocking part 13d 2.

It is clear that in another preferred embodiment of the invention, when said filtering membrane 12 is removed, the needleless drug-feeding liquid medicine filter can be used as a needleless drug-feeding tee joint, i.e. the same product can be used for two purposes, thus saving costs.

In conclusion, in the whole dosing process, the medicine can be directly dosed without steel needle puncture, and the blood-borne infection caused by the puncture injury of the steel needle and the puncture injury of the needle point of medical personnel can be avoided. In addition, through will filtering and add two functions of medicine and integrate simultaneously on this liquid medicine filter, the automatic equipment of transfusion system of can being convenient for to improve production efficiency.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.