CN218485005U

CN218485005U - Multifunctional dosing tee joint for infusion pump

Info

Publication number: CN218485005U
Application number: CN202221564685.9U
Authority: CN
Inventors: 朱永; 宋志文; 王瑾; 史向阳
Original assignee: Henan Shuguang Huizhikang Biotechnology Co ltd
Current assignee: Henan Shuguang Huizhikang Biotechnology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-02-17
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a multi-functional medicine tee bend that adds for infusion pump, includes silica gel case, adds medicine tee bend seat apron, adds medicine tee bend seat and includes three interface: the left connector, the right connector and the upper connector are communicated with each other to form a valve core cavity, a silica gel valve core is arranged in the valve core cavity and comprises a valve core upper portion and a valve core lower portion, the valve core upper portion and the valve core lower portion are fixed into a whole through a conical body, and a cylindrical blind hole is formed in the valve core lower portion. Compared with the prior art, the technical effect of the utility model is that, the utility model discloses the case adopts the structure that can two-wayly give, take out the medicine, has one-way tee bend and two-way tee bend function concurrently to can directly take out the medicine with the syringe that dispenses, the liquid medicine of taking out directly retrieves, and it is convenient to retrieve the liquid medicine, has avoided the waste, and the case material adopts integral silica gel to guarantee to add that medicine three-way resistance to pressure is lasting, stable, difficult leakage.

Description

Multifunctional dosing tee joint for infusion pump

Technical Field

The utility model relates to an among the infusion pump an infusion pump is with multi-functional medicine tee bend that adds.

Background

A disposable infusion pump is a device for continuously injecting liquid medicine in micro-liquid feeding treatment, and comprises two types of continuous liquid feeding (SZB-CBI), continuous liquid feeding and self-control liquid feeding (SZB-CBI + PCA), wherein the continuous liquid feeding (SZB-CBI) type infusion pump comprises a liquid outlet protective cap, a two-way locking joint, a hose 2, a two-way joint, a flow limiting pipe, a liquid medicine filter, a water stop clamp, a medicine feeding three-way joint, a medicine feeding port protective cap, a hose 1, a liquid storage device and the like; the continuous liquid feeding and automatic control liquid feeding (SZB-CBI + PCA) type comprises a liquid outlet protective cap, a two-way locking joint, a hose 2, a three-way joint, a flow limiting pipe, a PCA, a liquid medicine filter, a water stop clamp, a medicine adding three-way joint, a medicine adding opening protective cap, a hose 1, a liquid storage device and the like. The drug adding tee joint is an indispensable accessory on the infusion pump and is mainly used for adding anesthetic drugs into the infusion pump. The three-way medicine adding device has the advantages that the three-way medicine adding device is universal at present, one is a one-way valve type three-way medicine adding device, forward liquid feeding can be realized by using the principle of the one-way valve, the pressure resistance is high, the pressure is more closed and tighter in a certain range, leakage is not easy, the three-way medicine adding device is widely popularized abroad, the defects are that directional liquid discharging is not easy, special matching instruments are needed for liquid discharging, liquid medicine is not easy to recover during liquid discharging, waste of the liquid medicine is easy to cause, the cost is high, domestic application is less, and the popularization degree is low; the second kind adds medicine tee bend is two-way, very easy reverse tapping, the application adds the syringe that dispenses of medicine and just can easily realize reverse tapping, and it can not be extravagant to emit the liquid medicine, directly collect the syringe inside that dispenses, the liquid medicine of emitting is well preserved, can enter through adding the medicine tee bend again when patient's will do not take, the advantage of this kind adds medicine tee bend is that realization that can relax adds medicine and reverse drawing medicine, need not with the help of special instrument when drawing medicine, the syringe that dispenses when using and adding medicine just can draw medicine and the liquid medicine is directly drawn and is taken to the syringe that dispenses, the waste of liquid medicine has been avoided, domestic application is extensive, shortcoming inner structure is complicated, it is difficult to add medicine, sealing performance is not good, pressure resistance is unstable, easily leak, especially, valve core silica gel and casing laminating are not tight more easily leak during the low pressure.

In order to solve the problems that a one-way valve dosing tee joint is difficult to pump liquid, liquid medicine is not easy to recover, the two-way dosing tee joint is poor in sealing performance, pressure resistance is unstable, leakage is easy and the like, a multifunctional dosing tee joint for an infusion pump is designed at present, the multifunctional dosing tee joint for the infusion pump integrates the advantages of the one-way valve dosing tee joint and the two-way dosing tee joint, a valve core adopts a structure capable of bidirectionally feeding and pumping medicine, medicine can be directly pumped by a medicine dispensing injector, pumped liquid medicine is directly recovered, and the valve core is made of integral silica gel, so that the pressure resistance of the dosing tee joint is stable and is not easy to leak.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves: the multifunctional dosing tee for the infusion pump solves the problems that a one-way valve dosing tee is difficult in liquid pumping, liquid medicine is difficult to recover, the two-way dosing tee is poor in sealing performance, unstable in pressure resistance, easy to leak, difficult to dose and the like.

The technical scheme of the utility model specifically does:

the utility model provides a multi-functional medicine tee bend that adds for infusion pump, includes silica gel case, adds medicine three-way seat apron, adds medicine three-way seat and includes three interface: the left interface, the right interface, go up the interface, the intercommunication department of these three interfaces is the case chamber, be equipped with the silica gel case in the case chamber, the silica gel case includes case upper portion, the case lower part, case upper portion and case lower part are fixed as an organic whole through the taper, the case lower part is equipped with cylindrical blind hole, be equipped with a pair of column hole on the pore wall of cylindrical blind hole, make left interface and right interface between communicate through left column hole, cylindrical blind hole, the column hole on right side, the lower part of case chamber is the apron fixed chamber, be equipped with medicine tee bend seat apron in the apron fixed chamber, fixed between the locellus of tee bend seat apron and apron fixed chamber is sealed interference fit, the lower extreme of case lower part is fixed at medicine tee bend seat apron, the axis direction on upper portion of last case is equipped with logical medicine hole, logical medicine hole extends downwards, until communicating in the cylindrical blind hole, the upper portion of logical medicine hole is the column hole, the lower part is the taper hole, when the upper portion inner wall of taper body and case chamber is in the extrusion state, the logical medicine hole is not penetrating.

An inner bulge and at least three outer bulges are fixed on the upper surface of the dosing three-way seat cover plate, and the lower end of the lower part of the valve core is clamped in an annular space between the inner bulge and the outer bulge.

The lower end of the lower part of the valve core is in a cone shape with a big top and a small bottom.

The pore wall and the interior arch of cylindrical blind hole are interference fit as multi-functional medicine tee bend that adds for infusion pump, its characterized in that: the inner wall of the upper connector is a luer connector surface, and the left connector and the right connector are conical surfaces with small inner parts and large outer parts.

The lower surface of the dosing tee joint seat and the upper surface of the bottom plate of the dosing tee joint seat cover plate are welded and fixed.

Compared with the prior art, the technical effect of the utility model is that, the utility model discloses the case adopts the structure that can two-wayly give, take out the medicine, has one-way tee bend and two-way tee bend's function concurrently to can directly take out the medicine with the syringe that dispenses, the liquid medicine of taking out directly retrieves, and it is convenient to retrieve the liquid medicine, has avoided extravagant, and the case material adopts integral silica gel to guarantee to add lasting, stable, the difficult leakage of medicine tee bend resistance to pressure.

Drawings

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

Fig. 2 is a schematic diagram of a silica gel valve cartridge.

Fig. 3 is a bottom view of the medicated tee.

Fig. 4 is a front view of the medicated tee.

Fig. 5 is a schematic top view of the medicated tee.

FIG. 6 is a schematic sectional view of the medicated tee.

Fig. 7 is a schematic view of the drug-adding tee seat cover plate viewed from below.

Fig. 8 is a front view of the dosing tee base cover plate.

Fig. 9 is a schematic top view of the dosing tee base cover plate.

FIG. 10 is a schematic sectional view of the medicated tee seat cover plate.

Detailed Description

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

Referring to fig. 1-10, a multifunctional dosing tee joint for an infusion pump comprises a silica gel valve core 102, a dosing tee joint seat 101 and a dosing tee joint seat cover plate 103.

As shown in fig. 1-6, the medicated three-way seat 101 includes three connectors: the left connector 304, the right connector 303 and the upper connector 305, the connection positions of the three connectors are a valve core cavity 104, and a silica gel valve core 102 is arranged in the valve core cavity 104.

As shown in fig. 1 to 6, the silica gel valve core 102 includes a valve core upper portion 205 and a valve core lower portion 207, the valve core upper portion 205 and the valve core lower portion 207 are fixed into a whole through a cone 209, the valve core lower portion 207 is provided with a cylindrical blind hole 208, and a pair of cylindrical holes 206 are provided on a hole wall of the cylindrical blind hole 208, so that the left port 304 and the right port 303 are communicated through the left cylindrical hole 206, the cylindrical blind hole 208, and the right cylindrical hole 206.

As shown in fig. 1-2 and 6-10, the lower portion of the valve core cavity 104 is a cover plate fixing chamber 306, a dosing three-way seat cover plate 103 is arranged in the cover plate fixing chamber 306, the dosing three-way seat cover plate 103 and the chamber wall of the cover plate fixing chamber 306 are fixed in a sealing interference fit, and the lower end of the valve core lower portion 207 is fixed on the dosing three-way seat cover plate 103. The purpose of the ports provided with the cover plate fixing chamber 306 is to: the silicone spool 102 is conveniently placed into the spool chamber 104.

The axial direction of the upper part 205 of the valve core is provided with a medicine through hole 204, the medicine through hole 204 extends downwards until the inside of a communicated cylindrical blind hole 208, the upper part of the medicine through hole 204 is a cylindrical hole, the lower part of the medicine through hole 204 is a conical hole, and when the outer surface of the conical body 209 and the upper inner wall 301 of the valve core cavity 104 are in a squeezing state, the medicine through hole 204 is not communicated. This is because: when the outer surface of the cone 209 is in a state of being pressed against the upper inner wall 301 of the valve core chamber 104, the cone 209 is subjected to pressure and undergoes contraction deformation, and the contraction deformation blocks the medicine through hole 204.

As shown in fig. 1-2 and 6-10, in order to prevent the silica gel valve core 102 from swinging in the valve core cavity 104, an inner protrusion 411 and at least three outer protrusions 412 are fixed on the upper surface of the dosing three-way seat cover plate 103, and the lower end of the valve core lower part 207 is clamped in an annular space 413 between the inner protrusion 411 and the outer protrusion 412. Thus, the lower end of the lower valve body 207 is firmly fixed and does not swing.

As shown in fig. 2, the lower end of the lower valve body 207 is tapered in a large upper portion and a small lower portion for facilitating the lower end of the lower valve body 207 to enter the annular space 413 during the fitting process after the sealing effect is achieved. The reasons behind the sealing effect are seen below.

In order to prevent the liquid medicine from seeping out, the hole wall of the cylindrical blind hole 208 is in interference fit with the inner protrusion 411.

The drug through hole 204 functions as a check valve, and the drug solution can be added in the forward direction but cannot overflow in the reverse direction.

As shown in fig. 3-6, the inner wall (see reference numeral 102) of the upper connector 305 is a luer connector face of 6.

As shown in fig. 1-10, the lower surface of the dosing tee base 101 and the upper surface of the bottom plate 415 of the medicine tee base cover plate 103 are welded and fixed, so that the contact area between the dosing tee base 101 and the medicine tee base cover plate 103 is increased, and the sealing performance after welding is improved.

The working principle is as follows:

during assembly, the silica gel valve core 102 enters the valve core cavity 104 from the cover plate fixing chamber 306 of the dosing three-way seat 101, and then the dosing three-way seat cover plate 103 and the dosing three-way seat 101 are welded and fixed. At this time, when the silicone valve core 102 is pressed by the upward pushing force of the dosing tee seat cover plate 103 and the outer surface of the conical body 209 and the upper inner wall 301 of the valve core cavity 104 are in a pressing state, the conical body 209 is compressed and deformed, and the dosing hole 204 is blocked.

During use, under the condition of normal use, the pressure of the liquid medicine acts on the lower part (see the reference numeral 207) of the silica gel valve core 102, so that the whole silica gel valve core 102 is supported by upward force, the extrusion degree between the outer surface of the conical body 209 and the upper inner wall 301 of the valve core cavity 104 is larger, the sealing between the outer surface of the conical body and the upper inner wall is tighter, and due to the effect, when the self pressure of the liquid medicine is higher, the sealing between the silica gel valve core 102 and the dosing three-way seat 103 is tighter, and the problem of liquid medicine leakage cannot occur. Meanwhile, the medicine through hole 204 is blocked, and the problem of liquid medicine leakage is avoided.

During dosing, a dosing injector directly extends into the upper interface 305 and presses the upper surface of the silica gel valve core 102 (see reference number 210), the silica gel valve core 102 integrally moves downwards, so that the outer surface of the conical body 209 is not in contact with the upper inner wall 301 of the valve core cavity 104 any more, and the liquid medicine can enter the valve core cavity 104 from a gap between the outer surface of the conical body 209 and the upper inner wall 301 of the valve core cavity 104; meanwhile, as the outer surface of the conical body 209 is not contacted with the inner wall 301 of the upper part of the valve core cavity 104 any more, the medicine through hole 204 is not extruded any more and becomes a channel, and the medicine liquid can enter the cylindrical blind hole 208 from the medicine through hole 204, so that two medicine adding channels are provided, and the medicine adding efficiency is improved.

When medicine is drawn, the medicine taking needle penetrates into the cylindrical blind hole 208 from the medicine through hole 204, and the needle is very sharp and can enter forcibly under the condition that the medicine through hole 204 is blocked. After the infusion, the withdrawal of the drug is completed by aspiration. In the whole process, the liquid medicine is not left in the upper connector 305 any more, so that the waste of valuable medicines is avoided.

See the prior art for additional details.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. The utility model provides a multi-functional medicine tee bend that adds for infusion pump which characterized in that: including silica gel case (102), add medicine three-way seat (101), add medicine three-way seat apron (103), add medicine three-way seat (101) and include three interface: the left interface (304), the right interface (303) and the upper interface (305), the communicated parts of the three interfaces are a valve core cavity (104), a silica gel valve core (102) is arranged in the valve core cavity (104), the silica gel valve core (102) comprises a valve core upper part (205) and a valve core lower part (207), the valve core upper part (205) and the valve core lower part (207) are fixed into a whole through a conical body (209), a cylindrical blind hole (208) is arranged on the valve core lower part (207), a pair of columnar holes (206) are arranged on the hole wall of the cylindrical blind hole (208), so that the left interface (304) and the right interface (303) are communicated through the left columnar hole (206), the cylindrical blind hole (208) and the right columnar hole (206), the lower part of the valve core cavity (104) is a cover plate fixing chamber (306), a dosing three-way seat cover plate (103) is arranged in the cover plate fixing chamber (306), the dosing three-way seat cover plate (103) and the chamber wall of the cover plate fixing chamber (306) are fixed in a sealing interference fit mode, the lower end of the lower part (207) of the valve core is fixed on the dosing three-way seat cover plate (103), a dosing hole (204) is formed in the axial direction of the upper part (205) of the upper valve core, the dosing hole (204) extends downwards until the inside of a communicated cylindrical blind hole (208), the upper part of the dosing hole (204) is a cylindrical hole, the lower part of the dosing hole is a conical hole, and when the outer surface of the conical body (209) and the inner wall (301) of the upper part of the valve core cavity (104) are located When in a squeezing state, the medicine through hole (204) is not through.

2. The multi-functional medicine tee bend for infusion pump of claim 1, characterized in that: an inner bulge (411) and at least three outer bulges (412) are fixed on the upper surface of the dosing tee seat cover plate (103), and the lower end of the lower part (207) of the valve core is clamped in an annular space (413) between the inner bulge (411) and the outer bulge (412).

3. The multi-functional medicated tee for infusion pumps of claim 2, wherein: the lower end of the valve core lower part (207) is in a conical shape with a big top and a small bottom.

4. The multi-functional medicine tee of adding for infusion pump of claim 3, characterized by: the hole wall of the cylindrical blind hole (208) is in interference fit with the inner protrusion (411).

5. The multi-functional medicine tee of adding for infusion pump of claim 4, characterized by: the inner wall of the upper interface (305) is a luer interface, and the left interface (304) and the right interface (303) are conical surfaces with small inside and large outside.

6. The multi-functional medicine tee bend of adding for infusion pump of claim 5, characterized by: the lower surface of the dosing tee joint seat (101) is welded and fixed with the upper surface of a bottom plate (415) of the dosing tee joint seat cover plate (103).