阅读说明：本技术 药液过滤器 (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 于 2021-07-08 设计创作，主要内容包括：一种药液过滤器,用于输液器的输液软管上,包括相连接的上壳体和下壳体,以及卡在所述上壳体和下壳体之间的过滤膜,所述上壳体的外壁上设有加药通道,所述上壳体的内部嵌设有用于封堵所述加药通道的弹性密封元件。本发明通过弹性密封元件对加药通道进行密封,当进行加药时,将注射器从加药通道中穿刺弹性密封元件,与上壳体的内部连通进行注射加药,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；当加完药且拔出注射器后,弹性密封元件的穿刺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。此外,通过将过滤和加药两个功能同时集成在该药液过滤器上,能够便于输液器的自动化组装,从而提高生产效率。(A liquid medicine filter is used on an infusion hose of an infusion apparatus and comprises an upper shell, a lower shell and a filtering membrane, wherein the upper shell and the lower shell are connected, the filtering membrane is clamped between the upper shell and the lower shell, a medicine adding channel is arranged on the outer wall of the upper shell, and an elastic sealing element used for plugging the medicine adding channel is embedded in the upper shell. The medicine feeding channel is sealed by the elastic sealing element, when medicine is fed, the injector pierces the elastic sealing element from the medicine feeding channel and is communicated with the inside of the upper shell for injection medicine feeding, so that the flowing distance of the added liquid medicine in the infusion hose is shortened, and the medicine feeding efficiency is improved; after the medicine is added and the injector is pulled out, the puncture part of the elastic sealing element is restored to the initial position under the action of the elastic restoring force of the elastic sealing element, so that the sealing function is realized. 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.)

1. The utility model provides a liquid medicine filter for on the infusion hose of transfusion system, including the last casing that is connected and lower casing, and the card is in go up the filtration membrane between casing and the lower casing, its characterized in that: the outer wall of the upper shell is provided with a dosing channel, an elastic sealing element used for plugging the dosing channel is embedded in the upper shell, and when dosing is carried out, an injector is punctured into the elastic sealing element from the dosing channel and is communicated with the inside of the upper shell to carry out injection dosing.

2. The liquid medicine filter according to claim 1, wherein the medicine feeding channel is located on a side wall of the upper housing, a liquid inlet channel is provided at a top of the upper housing, a hole wall of the liquid inlet channel extends downward to form a clamping portion, and a bottom of the clamping portion does not exceed a side wall of the top of the medicine feeding channel;

the elastic sealing element is of a cylindrical structure and is sleeved on the clamping part.

3. The medical liquid filter according to claim 2, wherein the bottom of the engaging portion extends downward and exceeds the sidewall of the bottom of the medicine feeding channel, and an avoiding hole is formed in the sidewall of the engaging portion, and the position of the avoiding hole corresponds to the position of the medicine feeding channel.

4. The medical liquid filter according to claim 2, wherein the bottom of the engaging portion extends downward near the side wall of the drug feeding channel and exceeds the side wall of the bottom of the drug feeding channel to form a front baffle, the front baffle is provided with an avoiding hole, and the position of the avoiding hole corresponds to the position of the drug feeding channel.

5. The medical fluid filter according to claim 2, wherein a bottom of the engaging portion extends downward away from the side wall of the drug administration channel and forms a back baffle or a side baffle beyond a bottom side wall of the drug administration channel.

6. The medical liquid filter according to claim 1, wherein the medicine feeding channel is located on the side wall of the upper shell, the top of the upper shell is provided with a liquid inlet channel, the top of the inner cavity of the upper shell extends downwards to form an accommodating cavity, and the axis of the accommodating cavity is parallel to the axis of the upper shell;

one part of the side wall of the accommodating cavity is superposed with the side wall of the upper shell containing the dosing channel, the other part of the side wall and the inner wall of the liquid inlet channel share one bus, and avoidance holes are arranged on the part of the side wall, and the positions of the avoidance holes correspond to the positions of the dosing channel;

the elastic sealing element is cylindrical and is embedded in the accommodating cavity.

7. The medical liquid filter according to claim 1, wherein the medicine feeding channel is located at the top of the upper shell, the top of the upper shell is provided with a liquid inlet channel, the top of the inner cavity of the upper shell extends downwards to form an accommodating cavity, and the axis of the accommodating cavity is perpendicular to the axis of the upper shell;

one part of the side wall of the accommodating cavity coincides with the top of the upper shell containing the dosing channel, the other part of the side wall is provided with an avoiding hole, the position of the avoiding hole corresponds to the position of the dosing channel, and the end part of the accommodating cavity does not cross the side wall of the liquid inlet channel;

the elastic sealing element is cylindrical and is embedded in the accommodating cavity.

8. The medical liquid filter as claimed in claim 1, wherein the elastic sealing member is made of rubber or silicone, and has a hollow cylindrical or polygonal cylindrical structure and is coaxial with the upper case.

9. The medical fluid filter according to claim 1, wherein the elastic sealing element is made of rubber or silica gel, has a solid cylindrical, semi-cylindrical or polygonal prism structure, and is located at one side of the inner cavity of the upper housing.

10. The medical liquid filter according to claim 2, wherein an angle between an axis of the medicine feeding passage and an axis of the liquid inlet passage is 0 to 180 °.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a 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 liquid medicine filter, so as to facilitate quick medicine adding and improve the medicine feeding efficiency.

A liquid medicine filter is used on an infusion hose of an infusion apparatus and comprises an upper shell, a lower shell and a filtering membrane, wherein the upper shell and the lower shell are connected, the filtering membrane is clamped between the upper shell and the lower shell, a medicine adding channel is arranged on the outer wall of the upper shell, an elastic sealing element used for plugging the medicine adding channel is embedded in the upper shell, and when medicine is added, an injector is used for puncturing the elastic sealing element in the medicine adding channel and is communicated with the interior of the upper shell to inject and add the medicine.

Compared with the prior art, the medicine feeding channel is sealed by the elastic sealing element, when medicine is fed, the elastic sealing element is punctured by the injector from the medicine feeding channel and is communicated with the interior of the upper shell for injection medicine feeding, so that the flowing distance of the added liquid medicine in the infusion hose is shortened, the medicine feeding efficiency is improved, and the added medicine is quickly infused into the body of a patient and the patient is timely treated; after the medicine is added and the injector is pulled out, the puncture part of the elastic sealing element is restored to the initial position under the action of the elastic restoring force of the elastic sealing element, so that the sealing function is realized. 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.

Furthermore, the dosing channel is positioned on the side wall of the upper shell, a liquid inlet channel is arranged at the top of the upper shell, the hole wall of the liquid inlet channel extends downwards to form a clamping part, and the bottom of the clamping part does not exceed the side wall of the top of the dosing channel;

the elastic sealing element is of a cylindrical structure and is sleeved on the clamping part.

Further, the whole downwardly extending in bottom of block portion surpasses the bottom lateral wall of medicine passageway, be equipped with on the lateral wall of block portion and dodge the hole, dodge the position of hole with the position of medicine passageway corresponds.

Further, the bottom of block portion is close to add the lateral wall downwardly extending of medicine passageway, and surpass add the bottom lateral wall of medicine passageway forms preceding baffle, be equipped with on the preceding baffle and dodge the hole, dodge the position of hole with add the position correspondence of medicine passageway.

Further, the bottom of the clamping part extends downwards away from the side wall of the medicine feeding channel and exceeds the side wall of the bottom of the medicine feeding channel to form a rear baffle or a side baffle.

Furthermore, the medicine feeding channel is positioned on the side wall of the upper shell, a liquid inlet channel is arranged at the top of the upper shell, the top of an inner cavity of the upper shell extends downwards to form an accommodating cavity, and the axis of the accommodating cavity is parallel to the axis of the upper shell;

one part of the side wall of the accommodating cavity is superposed with the side wall of the upper shell containing the dosing channel, the other part of the side wall and the inner wall of the liquid inlet channel share one bus, and avoidance holes are arranged on the part of the side wall, and the positions of the avoidance holes correspond to the positions of the dosing channel;

the elastic sealing element is cylindrical and is embedded in the accommodating cavity.

Furthermore, the medicine feeding channel is positioned at the top of the upper shell, a liquid inlet channel is arranged at the top of the upper shell, the top of an inner cavity of the upper shell extends downwards to form an accommodating cavity, and the axis of the accommodating cavity is perpendicular to the axis of the upper shell;

one part of the side wall of the accommodating cavity coincides with the top of the upper shell containing the dosing channel, the other part of the side wall is provided with an avoiding hole, the position of the avoiding hole corresponds to the position of the dosing channel, and the end part of the accommodating cavity does not cross the side wall of the liquid inlet channel;

the elastic sealing element is cylindrical and is embedded in the accommodating cavity.

Furthermore, the elastic sealing element is made of rubber or silica gel, is hollow cylindrical or polygonal cylindrical in structure, and is coaxial with the upper shell.

Furthermore, the elastic sealing element is made of rubber or silica gel, has a structure of a solid cylindrical, semi-cylindrical or polygonal prism, and is positioned on one side of the inner cavity of the upper shell.

Further, the axis of the medicine feeding channel and the axis of the liquid inlet channel form an included angle of 0-180 degrees.

Drawings

FIG. 1 is a schematic view of a liquid medicine filter according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the liquid medicine filter of FIG. 1;

FIG. 3 is a cross-sectional view of a medical fluid filter according to a second embodiment of the present invention;

FIG. 4 is a cross-sectional view of a medical fluid filter according to a third embodiment of the present invention;

FIG. 5 is a cross-sectional view of a medical fluid filter according to a fourth embodiment of the present invention;

FIG. 6 is a schematic structural view of a liquid medicine filter according to a fifth embodiment of the present invention;

FIG. 7 is a cross-sectional view of the liquid medicine filter of FIG. 6;

FIG. 8 is a cross-sectional view of a medical fluid filter according to a sixth embodiment of the present invention;

FIG. 9 is a cross-sectional view of a medical fluid filter according to a seventh embodiment of the present invention; .

Description of the main element symbols:

upper shell	10	Medicine feeding channel	101
				Liquid inlet channel	102	Engaging part	103
Avoiding hole	104	Avoiding hole	104a
				Avoiding hole	104b	Avoiding hole	104c
Avoiding hole	104d	Front baffle	105
				Back baffle	106	Containing cavity	107
Containing cavity	107a	Lower casing	11
				Filter membrane	12	Elastic sealing element	13

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 medical fluid filter provided in an embodiment of the present invention is used for an infusion hose 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, wherein a drug adding channel 101 is disposed on an outer wall of the upper housing 10, and an elastic sealing element 13 for blocking the drug adding channel 101 is embedded inside the upper housing 11.

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 the particle 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 medicine feeding channel 101 is sealed by the elastic sealing element 13, and when medicine is fed, the injector pierces the elastic sealing element 13 from the medicine feeding channel 101, and is communicated with the inside of the upper housing 10 for injection medicine feeding, so as to shorten the flow distance of the fed liquid medicine in the infusion hose, thereby improving the medicine feeding efficiency, i.e. quickly feeding the fed medicine into the body of the patient, and timely treating the patient; after the medicine is added and the injector is pulled out, the puncture part of the elastic sealing element 13 is restored to the initial position under the action of the self elastic restoring force, so that the sealing function is realized.

Referring to fig. 1 and 2, the dosing channel 101 is located on a side wall of the upper housing 10, a liquid inlet channel 102 is arranged at the top of the upper housing 10, a hole wall of the liquid inlet channel 102 extends downward to form a clamping portion 103, and the bottom of the clamping portion 103 does not exceed the side wall of the top of the dosing channel 101, so as to avoid interference with the injector during dosing;

the elastic sealing element 13 is a cylindrical structure and is sleeved on the engaging portion 103, so that the elastic sealing element 13 is prevented from falling off.

Referring to fig. 3, in a preferred embodiment of the present invention, the bottom of the engaging portion 103 extends downward and beyond the sidewall of the bottom of the drug feeding channel 101, so as to enhance the connection strength between the elastic sealing element 13 and the engaging portion 103. Be equipped with on the lateral wall of block portion 103 and dodge hole 104, dodge hole 104 the position with the position of medicine passageway 101 corresponds, avoids adding the medicine in-process, takes place to interfere with the syringe.

In the present embodiment, the extending portion of the engaging portion 103 is formed in a cylindrical shape or a polygonal cylindrical shape. Correspondingly, the elastic sealing element 13 is of a hollow cylindrical or polygonal cylindrical structure and is coaxial with the upper shell 10.

Referring to fig. 4, in another preferred embodiment of the present invention, the bottom of the engaging portion 103 extends downward near the sidewall of the drug feeding channel and forms a front baffle 105 beyond the sidewall of the bottom of the drug feeding channel 101, so as to enhance the connection strength between the elastic sealing element 13 and the engaging portion 103. Be equipped with on the preceding baffle 105 and dodge hole 104a, dodge hole 104 a's position with the position of medicine passageway 101 corresponds, avoids adding the medicine in-process, takes place to interfere with the syringe.

Referring to fig. 5, in another preferred embodiment of the present invention, the bottom of the engaging portion 103 extends downward away from the sidewall of the drug feeding channel 101 and forms a rear baffle 106 or a side baffle beyond the sidewall of the bottom of the drug feeding channel 101, so as to enhance the connection strength between the elastic sealing element 13 and the engaging portion 103.

In fig. 4 and 5, the cross-sectional shape of the front barrier 105, the rear barrier 106, or the side barrier is circular arc or rectangular. Correspondingly, the elastic sealing element 13 is of a hollow cylindrical or polygonal cylindrical structure and is coaxial with the upper shell 10.

Referring to fig. 6 and 7, in another preferred embodiment of the present invention, the medicine feeding channel 101 is located on a side wall of the upper shell 10, a liquid inlet channel 102 is provided at the top of the upper shell 10, the top of the inner cavity of the upper shell 10 extends downward to form an accommodating cavity 107, and the axis of the accommodating cavity 107 is parallel to the axis of the upper shell 10;

one part of the side wall of the accommodating cavity 107 is overlapped with the side wall of the upper shell 10 containing the drug adding channel 101, the other part of the side wall shares a bus with the inner wall of the liquid inlet channel 102, and the part of the side wall is provided with an avoiding hole 104b, so that the liquid inlet channel 102 is prevented from being blocked, and the transfusion is further influenced, and the position of the avoiding hole 104b corresponds to the position of the drug adding channel 101, and the interference with an injector is avoided in the drug adding process;

the elastic sealing element 13 is cylindrical and is embedded in the accommodating cavity 107, so that the medicine feeding channel 101 is sealed.

It should be noted that, in this embodiment, the structure of the elastic sealing element 13 is a solid cylindrical, semi-cylindrical or polygonal prism, and is located at one side of the inner cavity of the upper housing 10, so as to avoid blocking the liquid inlet channel 102, thereby affecting the infusion.

Referring to fig. 8, in another preferred embodiment of the present invention, the medicine feeding channel 101 is located at the top of the upper shell 10, the top of the upper shell 10 is provided with a liquid inlet channel 102, the top of the inner cavity of the upper shell 10 extends downward to form an accommodating cavity 107a, and the axis of the accommodating cavity 107a is perpendicular to the axis of the upper shell 10;

one part of the side wall of the accommodating cavity coincides with the top of the upper shell 10 containing the medicine feeding channel 101, the other part of the side wall is provided with an avoiding hole 104c, the position of the avoiding hole 104c corresponds to the position of the medicine feeding channel 101, so that the avoiding hole is prevented from interfering with an injector in the medicine feeding process, the end part of the accommodating cavity 107a does not cross the side wall of the liquid inlet channel 102, and the liquid inlet channel 102 is prevented from being blocked, so that the transfusion is influenced;

the elastic sealing element 13 is cylindrical and is embedded in the accommodating cavity, so that the medicine adding channel is sealed.

Specifically, in this embodiment, the elastic sealing element 13 is loaded into the accommodating cavity 107a from the bottom, the avoiding hole 104c is located at the same position as the installation notch, and the avoiding hole 104c is in the shape of a rectangular groove.

It should be noted that, in this embodiment, the structure of the elastic sealing element 13 is a solid cylindrical, semi-cylindrical or polygonal prism, and is located at one side of the inner cavity of the upper housing 10, so as to avoid blocking the liquid inlet channel 102, thereby affecting the infusion.

Referring to fig. 9, in another preferred embodiment of the present invention, the structure of this embodiment is substantially the same as that of fig. 8, except that in this embodiment, the elastic sealing element 13 is laterally installed into the accommodating cavity 107a, and the avoiding hole 104d and the installation notch are located at different positions.

Further, it is clear that, in the present invention, an included angle between an axis of the drug adding channel 101 and an axis of the liquid inlet channel 102 is 0 to 180 °, so that a drug adding angle can be changed.

In summary, in the present invention, the medicine feeding channel 101 is sealed by the elastic sealing element 13, when medicine is fed, the injector pierces the elastic sealing element 13 from the medicine feeding channel 101, and is communicated with the inside of the upper housing 10 for injection medicine feeding, so as to shorten the flow distance of the fed liquid medicine in the infusion hose, thereby improving the medicine feeding efficiency, i.e. quickly feeding the fed medicine into the patient and timely treating the patient; after the medicine is added and the injector is pulled out, the puncture part of the elastic sealing element 13 is restored to the initial position under the action of the self elastic restoring force, so that the sealing function is realized. 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.