CN213049725U

CN213049725U - Multichannel liquid medicine filter extension tube

Info

Publication number: CN213049725U
Application number: CN202021756108.0U
Authority: CN
Inventors: 鲍忆; 张建忠; 吉恒权
Original assignee: Zhejiang Sujia Medical Device Co ltd
Current assignee: Zhejiang Sujia Medical Device Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-04-27
Anticipated expiration: 2030-08-20

Abstract

The utility model provides a multichannel liquid medicine filter extension pipe, it has solved the poor scheduling problem of extension pipe filter effect, it includes the body, the body has two pipes through multichannel joint even, filter housing has worn on the body, the inside filter chamber that is of filter housing, filter chamber has a plurality of diplopore pieces and haplopore piece towards liquid outlet direction interval arrangement in proper order from filter housing's inlet, through-hole on diplopore piece and the haplopore piece is sealed through cylindric filter membrane between with adjacent diplopore piece or the haplopore piece, the inlet department that the filter chamber is close to filter housing is provided with the filter block that porous material made, the liquid outlet department that the filter chamber is close to filter housing is provided with the filter cloth. The utility model has the advantages of good filtering effect, reliable use and the like.

Description

Multichannel liquid medicine filter extension tube

Technical Field

The utility model belongs to the technical field of medical instrument equipment, concretely relates to multichannel liquid medicine filter extension tube.

Background

The extension tube is mainly suitable for being connected with an infusion container or an infusion apparatus, increasing the filtration of liquid medicine, adjusting the flow rate and extending an infusion tube when being matched with the infusion container and the infusion apparatus for infusing the liquid medicine in clinic. The extension tubes of the prior art only employ a conduit and a filter. Such extension tubes have the following drawbacks in use: firstly, due to poor filtering precision, the filtering effect is poor, and some insoluble particles in the liquid medicine can not be filtered, thereby causing potential safety hazard to the transfusion; secondly, some extension pipes are difficult to exhaust some air in the middle of the pipe when the medicine is administered for many times, and some air is brought in when the medicine is pushed, which may harm patients. In addition, the conventional extension pipe can only meet the requirement of single-pipe liquid inlet, and cannot be used when the liquid inlet is blocked.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a disposable microfiltration extension tube [201310149873.4], which comprises a microfiltration device, one end of which is connected to a tee, the tee is connected to two connection hoses, the ends of the two connection hoses are connected to an inner cone locking joint, and the two connection hoses are provided with clamps; the other end of the precision filter is connected with an extension pipe, and the end part of the extension pipe is connected with an external cone locking joint.

The relatively poor problem of stability in use when the single tube feed liquor has been solved to a certain extent to above-mentioned scheme, but this scheme still has a great deal of not enough, for example, unable abundant filtration during the infusion easily causes the injury scheduling problem to the patient.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, multichannel liquid medicine filter extension pipe that the filter effect is good.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this multichannel liquid medicine filter extension pipe, including the body, the body connects even there are two pipes through the multichannel, filter housing has worn on the body, the inside filter chamber that is of filter housing, filter chamber has a plurality of diplopore pieces and haplopore piece from filter housing's inlet towards liquid outlet direction interval arrangement in proper order, through-hole on diplopore piece and the haplopore piece and adjacent diplopore piece or the haplopore piece between seal through cylindric filter membrane, the filter chamber is close to filter housing's inlet department and is provided with the filter mass that porous material made, the filter chamber is close to filter housing's liquid outlet department and is provided with the filter cloth. The filter block that porous material made can be with most large granule impurity filtering, and the tiny impurity of a plurality of cylindric filter membrane filters under osmotic pressure's effect, and inside cavity can deposit impurity simultaneously, avoids long-time back filter membrane effect to descend, and the filter cloth of liquid outlet department reduces the liquid flow rate, guarantees the body and steadily infuses to better filter effect has.

In the multi-channel liquid medicine filter extension pipe, the filter shell is made of transparent hard materials, and a plurality of reinforcing ribs extending along the axial direction are distributed on two sides of the filter shell. The strengthening rib further improves filter housing intensity, guarantees not warp when the filter chamber is inside to pressurize.

In the extension pipe of the multi-channel liquid medicine filter, the filter cloth protrudes towards the liquid outlet of the filter shell. The filter cloth has a certain radian, and the surface area of the filter cloth is increased, so that the optimal flow stabilizing effect is obtained.

In the extension tube of the multichannel liquid medicine filter, the multichannel joint comprises a single channel head connected with the tube body, the other side of the single channel head is connected with a multichannel head, and a branched channel communicated with the single channel head is arranged in the multichannel head. The multi-channel joint is used for connecting a common conduit and a spare conduit and can also be used for mixing and injecting different liquid medicines.

In the extension tube of the multi-channel liquid medicine filter, the single channel head is internally provided with an inner channel which communicates the tube body with the branch channel, and the outer side of the single channel head is provided with an air hole which is communicated with the inner channel. The residual air in the conduit can be discharged by opening the air hole, so that the use safety of the conduit is improved.

In the extension tube of the multi-channel liquid medicine filter, a diaphragm movably connected towards the direction of the tube body is arranged in the inner channel. The membrane ensures the unidirectional flow of the liquid medicine and avoids the backflow of the liquid medicine when the transfusion is stopped.

In the extension tube of the multi-channel liquid medicine filter, the liquid inlet of the tube body is connected with the joint seat, and the sheath is inserted in the joint seat. The liquid inlet of the tube body is sealed by the sheath, so that the interior is sterile during storage.

In the extension tube of the multi-channel liquid medicine filter, the inner side of the joint seat is provided with a sealing groove which is mutually inserted with the sheath, and the bottom of the sealing groove is provided with a sealing gasket. The sealing gasket further improves the sealing performance of the sheath and the joint seat.

In the extension tube of the multi-channel liquid medicine filter, the liquid outlet of the catheter is connected with a needle stand, and a protective cap is inserted in the needle stand. The protective cap is covered on the needle base to keep the catheter sealed.

In the extension tube of the multi-channel liquid medicine filter, the center of the protective cap is provided with a sealing column inserted in the needle base, and the sealing column is made of elastic materials. The sealing column is plugged into the catheter and the needle seat, so that the inserting stability is ensured.

Compared with the prior art, the utility model has the advantages of: the filters connected in series in the tube body sequentially filter residual large and small particles in the liquid medicine, and play a role in limiting the flow, thereby ensuring the safety of infusion; the multi-channel joint is connected with the two guide pipes, so that the blockage of a single guide pipe is avoided, and the use reliability is better; the sheath and the protective cap can bend and seal the liquid inlet and the liquid outlet of the extension tube to keep the interior clean.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the filter housing of the present invention;

fig. 3 is a cross-sectional view showing the internal structure of the filter housing according to the present invention;

FIG. 4 is a cross-sectional view of the multi-channel joint of the present invention;

in the figure, a pipe body 1, a connector base 11, a sheath 12, a sealing groove 13, a sealing gasket 14, a multi-channel connector 2, a single-channel head 21, a multi-channel head 22, a branch channel 23, an inner channel 24, an air hole 25, a membrane 26, a conduit 3, a needle base 31, a protective cap 32, a sealing column 33, a filter shell 4, a filter cavity 41, a double-hole sheet 42, a single-hole sheet 43, a filter membrane 44, a filter block 45, a filter cloth 46 and a reinforcing rib 47.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the extension tube of the multichannel liquid medicine filter comprises a tube body 1, the tube body 1 is connected with two guide tubes 3 through a multichannel connector 2, a filter housing 4 penetrates through the tube body 1, a filter chamber 41 is arranged inside the filter housing 4, a plurality of double-hole sheets 42 and single-hole sheets 43 are sequentially arranged in the filter chamber 41 from a liquid inlet to a liquid outlet of the filter housing 4 at intervals, through holes in the double-hole sheets 42 and the single-hole sheets 43 are sealed with the adjacent double-hole sheets 42 or single-hole sheets 43 through a cylindrical filter film 44, a filter block 45 made of porous materials is arranged at a position, close to the liquid inlet of the filter housing 4, of the filter chamber 41, and a filter cloth 46 is arranged at a position, close to the liquid outlet of the filter. After the liquid medicine enters the filter cavity 41 of the filter shell 4, the liquid medicine passes through the filter block 45, large-particle insoluble substances are filtered, then the liquid medicine flows between the double-hole sheet 42 and the single-hole sheet 43, and the cylindrical filter film 44 is polyvinylidene fluoride, so that the polyvinylidene fluoride has the characteristic of low protein adsorption, and colloids and high molecular organic matters are effectively removed. The final filter cloth 46 mainly reduces the flow rate of the liquid medicine and keeps the transfusion stability.

Specifically, the filter housing 4 is made of a transparent hard material, and a plurality of ribs 47 extending in the axial direction are distributed on both sides thereof. The reinforcing rib 47 improves the structural strength of the filter case 4, and restricts the expansion of the filter chamber 41 after the chemical liquid is injected into the filter case 4.

In depth, the filter cloth 46 is convex toward the outlet of the filter housing 4. The filter cloth 46 is a low-mesh medical cotton cloth, which mainly reduces the flow rate of the filtered liquid medicine.

Further, the multi-channel joint 2 comprises a single-channel head 21 connected with the pipe body 1, the other side of the single-channel head 21 is connected with a multi-channel head 22, and a branch channel 23 communicated with the single-channel head 21 is arranged in the multi-channel head 22. The multi-channel joint 2 adopts a bifurcated design and is externally connected with a plurality of guide pipes 3, the connected guide pipes 3 are divided into spare and common use, and can be used for mixing and filling other liquid medicines.

Furthermore, an inner channel 24 for communicating the tube body 1 with the branch channel 23 is provided in the single channel head 21, and an air hole 25 communicating with the inner channel 24 is opened outside the single channel head 21. When the tube 3 is filled with the liquid medicine, the inside of the tube remains with air, and the air hole 25 is opened to discharge the air.

In addition, a membrane 26 is movably connected to the inner channel 24 toward the tube 1. The diaphragm 26 has a small resistance to the forward flow of the liquid medicine in the tube 1, and the diaphragm 26 closes the tube 1 when the liquid medicine flows back.

Meanwhile, a joint seat 11 is connected to the liquid inlet of the pipe body 1, and a sheath 12 is inserted into the joint seat 11. The sheath 12 is inserted at the end of the tube body 1 and the inner side of the sheath is attached to the tube body 1.

The inside of the joint base 11 is provided with a sealing groove 13 inserted with the sheath 12, and the bottom of the sealing groove 13 is provided with a sealing gasket 14. The sealing gasket 14 is made of silica gel, is tightly attached to the sheath 12, and completely seals the liquid inlet of the tube body 1.

Obviously, a needle seat 31 is connected to the liquid outlet of the catheter 3, and a protective cap 32 is inserted in the needle seat 31. The needle seat 31 is used for externally connecting an infusion bottle, the end of the needle seat 31 is inserted into the bottle, the socket is closed by the needle seat 31, and the interface of the needle seat 31 is sealed by the protective cap 32 in a conventional state.

Preferably, the cap 32 is centrally provided with a sealing post 33 inserted in the needle seat 31, the sealing post 33 being made of an elastic material. The diameter of the conduit 3 is larger, and the sealing column 33 is inserted into the conduit 3 and is attached and pressed with the inner side of the conduit 3, so that the air tightness is better.

In summary, the principle of the present embodiment is: the middle part of the pipe body 1 is connected with the filter shell 4 in series, a filter block 45 in the filter shell 4 filters large-particle impurities in the liquid medicine, a cylindrical filter film 44 filters macromolecular organic pollutants layer by layer, and a final filter cloth 46 plays a role in stabilizing the flow.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the tube body 1, the connector holder 11, the sheath 12, the sealing groove 13, the sealing gasket 14, the multi-channel connector 2, the single-channel head 21, the multi-channel head 22, the branched channel 23, the inner channel 24, the air hole 25, the membrane 26, the catheter 3, the needle holder 31, the cap 32, the sealing column 33, the filter housing 4, the filter chamber 41, the double-hole sheet 42, the single-hole sheet 43, the filter membrane 44, the filter block 45, the filter cloth 46, the reinforcing ribs 47, etc., are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A multi-channel liquid medicine filter extension tube comprises a tube body (1), wherein the tube body (1) is connected with two guide tubes (3) through a multi-channel joint (2), it is characterized in that a filter shell (4) penetrates through the pipe body (1), a filter cavity (41) is arranged inside the filter shell (4), the filter cavity (41) is sequentially provided with a plurality of double-hole sheets (42) and single-hole sheets (43) at intervals from the liquid inlet to the liquid outlet of the filter shell (4), the through holes on the double-hole sheet (42) and the single-hole sheet (43) and the adjacent double-hole sheet (42) or single-hole sheet (43) are sealed by a cylindrical filtering film (44), a filter block (45) made of porous material is arranged at the position of the filter cavity (41) close to the liquid inlet of the filter shell (4), the filter cavity (41) is provided with a filter cloth (46) close to the liquid outlet of the filter shell (4).

2. The extension tube of multi-channel medical liquid filter as claimed in claim 1, wherein the filter housing (4) is made of transparent hard material and has a plurality of ribs (47) extending in the axial direction distributed on both sides.

3. The extension tube of multichannel liquid medicine filter as claimed in claim 1, wherein the filter cloth (46) is convex towards the outlet of the filter housing (4).

4. The extension tube of a multi-channel liquid medicine filter as claimed in claim 1, wherein the multi-channel joint (2) comprises a single channel head (21) connected with the tube body (1), the other side of the single channel head (21) is connected with a multi-channel head (22), and a branched channel (23) communicated with the single channel head (21) is arranged in the multi-channel head (22).

5. The extension tube of multi-channel liquid medicine filter as claimed in claim 4, wherein an inner channel (24) for communicating the tube body (1) with the branch channel (23) is provided in the single channel head (21), and an air hole (25) communicating with the inner channel (24) is provided at the outer side of the single channel head (21).

6. The extension tube of multi-channel liquid medicine filter as claimed in claim 5, wherein a diaphragm (26) movably connected toward the tube body (1) is provided in the inner channel (24).

7. The extension tube of multichannel liquid medicine filter as claimed in claim 1, wherein a joint seat (11) is connected to the inlet of the tube body (1), and a sheath (12) is inserted into the joint seat (11).

8. The extension tube of multi-channel liquid medicine filter as claimed in claim 7, wherein the inside of the connector base (11) is provided with a sealing groove (13) which is inserted into the sheath (12), and the bottom of the sealing groove (13) is provided with a sealing gasket (14).

9. The extension tube of multi-channel medical liquid filter as claimed in claim 1, wherein a needle seat (31) is connected to the outlet of the catheter (3), and a protective cap (32) is inserted into the needle seat (31).

10. The extension tube of multi-channel medical liquid filter as claimed in claim 9, wherein the cap (32) is centrally provided with a sealing post (33) inserted in the needle seat (31), and the sealing post (33) is made of an elastic material.