CN202128777U

CN202128777U - Disposable safety transfusion device

Info

Publication number: CN202128777U
Application number: CN201120151826U
Authority: CN
Inventors: 朱福弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-13
Filing date: 2011-05-13
Publication date: 2012-02-01
Anticipated expiration: 2021-05-13

Abstract

The utility model discloses a disposable safety transfusion device, which comprises a transfusion channel. A liquid-receiving needle, a liquid-receiving flexible pipe, a drop bucket, a filtering member, a vein needle connecting tube and a vein needle tube communicated and connected with each other are successively arranged in the transfusion channel. A flow regulator is sleeved on the outside of the liquid-receiving flexible pipe. The disposable safety transfusion device is characterized in that the transfusion channel is equipped with a one-way valve. The one-way valve comprises a valve body and a valve core. When the pressure at the outlet of the inner cavity of the valve body is greater than the pressure at the inlet of the inner cavity of the valve body, the one-way valve is automatically closed. The disposable safety transfusion device prevents air from entering a human body and avoids the blood counter-flow. Meanwhile, the soup or blood utilization rate is fully improved. Therefore, the disposable safety transfusion device is an efficient transfusion device.

Description

The disposable safe infusion set

Technical field

This utility model relates to medical instruments field, particularly a kind of disposable infusion set.

Background technology

Disposable infusion set is infused, generally adopted when transfusing blood to medical department to patient at present; Disposable infusion device comprises that disposable infusion set, disposable use titration tubular type transfusion device, disposable use precision filter infusion set, disposable use advance light transfusion device, disposable working pressure fluid delivery apparatus with transfusion device and disposable use blood exchange transfusion set etc.; Mainly there is the deficiency of following three aspects in above-mentioned these disposable infusion devices: 1) when infusion finishes; Infusion set can not realize closing automatically termination; So just might make air admission in the human body body, thereby can bring certain hidden danger human body safety; 2) in infusion process,, might make in the reverse infusion set that backflows of blood of human body, thereby bring unnecessary fear to the patient if patient's position changes; 3) when infusion finishes, common residual more medicinal liquid of meeting or blood in the infusion set, thus cause unnecessary waste.

The utility model content

To the deficiency of above-mentioned prior art, the technical problem that this utility model will solve provides and a kind ofly can prevent the air admission human body, can prevent blood back flow again, and can fully improve the disposable safe infusion set of medicinal liquid or blood utilization rate.

For solving the problems of the technologies described above, this utility model adopts following technical scheme:

A kind of disposable safe infusion set; Comprise an infusion channel, said infusion channel be provided with successively connect connect receive the liquid pin, receive the liquid flexible pipe, dropping funnel, filter element, intravenous needle connection tube and vein needle tubing, the said liquid hose overcoat that receives has flow regulator; It is characterized in that: said infusion channel is provided with a check valve; Said check valve comprises valve body and spool, and when the pressure in said body cavity exit during greater than the pressure of said body cavity import department, said check valve is closed automatically.

Preferably, also be provided with a shutoff valve on the said infusion channel, the spool proportion of said shutoff valve is less than the proportion of medicinal liquid or blood.

Preferably, be provided with an intravenous needle Connection Block between said filter element and the said intravenous needle connection tube, said shutoff valve is between said filter element and said intravenous needle Connection Block.

Preferably, said check valve is between said shutoff valve and said vein needle tubing.

Preferably, the spool proportion of said shutoff valve is less than 1 gram/cm ³

Preferably, the area of said intravenous needle connection tube is less than 1.5 square millimeters.

Preferably, the valve body import of said check valve is an international standard female cone hole of 6: 100, and the valve outlet of said check valve and said intravenous needle connection tube connect the structure that links into an integrated entity.

Preferably, the platypelloid type tubular structure of said spool for processing by soft macromolecular material, an end of said spool entangles the import of said body cavity, and the other end of said spool is closed naturally in original state.

Preferably, the valve body import of said check valve is an international standard female cone hole of 6: 100, and the valve outlet of said check valve is an international standard cylindrical conehead of 6: 100.

Preferably, said shutoff valve arrives the sharp total length of said intravenous needle bobbin to the said total length of liquid pin needle point that receives greater than said shutoff valve.

Technique scheme has following beneficial effect: this disposable safe infusion set is provided with check valve on infusion channel; Like this in infusion process; The pressure that causes the import of one-way valve intracoelomic cavity when patient's changing position or the walking of standing up is during less than the pressure of body cavity outlet; Check valve meeting auto-closing, thus the reverse inflow infusion set of blood of human body can effectively be stopped, avoid the patient to produce the feared state of mind.And also be provided with a shutoff valve on the infusion channel of the safe transfusion device of this structure; The spool proportion of shutoff valve is less than the proportion of medicinal liquid or blood; The spool of shutoff valve just can fluctuate by the height with medicinal liquid or blood in the valve body of shutoff valve like this; When the intravital liquid level of shutoff valve valve drops to certain position; The spool of shutoff valve contacts with composition surface on the valve body to coincide and makes shutoff valve closed, thereby makes this infusion set stop infusion medicinal liquid or blood automatically, and can effectively prevent the air admission human body.

Above-mentioned explanation only is the general introduction of this utility model technical scheme, in order more to know the technological means of understanding this utility model, and can implement according to the content of description, below with the preferred embodiment of this utility model and conjunction with figs. specify as after.The specific embodiment of this utility model is provided by following examples and accompanying drawing thereof in detail.

Description of drawings

Fig. 1 is the structural representation of an embodiment of this utility model.

Fig. 2 is the structural representation of another embodiment of this utility model.

Fig. 3 is the structural representation of this utility model embodiment check valve.

Fig. 4 is the assembling unit structure sketch map of a kind of check valve of this utility model embodiment.

The specific embodiment

Describe in detail below in conjunction with the preferred embodiment of accompanying drawing to this utility model.

As shown in Figure 1; This disposable safe infusion set be provided with successively connect connect receive liquid pin 1, receive liquid flexible pipe 2, dropping funnel 4, filter element 5, intravenous needle connection tube 9 and vein needle tubing 10; Receive to be with on the liquid flexible pipe 2 a flow actuator 3; Also be provided with an intravenous needle Connection Block 8 between filter element 5 and the intravenous needle connection tube 9, above-mentioned parts connect to be tightly connected and form the infusion channel of this disposable safe infusion set.

Between filter element 5 and intravenous needle Connection Block 8, be provided with a shutoff valve, the valve body 60 of this choke valve is positioned at the lower end of filter element 5, is provided with spool 61 in the valve body 60, be provided with in the inner chamber of valve body 60 can with the composition surface 62 of spool 61 driving fits.The proportion of spool 61 should be less than the proportion of medicinal liquid or blood, generally speaking less than 1 gram/cm ³Like this when in the inner chamber of valve body 60 medicinal liquid or blood being arranged; Spool 61 can fluctuate with liquid level, and when the liquid level in valve body 60 inner chambers low to a certain degree the time, spool 61 will contact with composition surface 62 to coincide and make this shutoff valve closure; Can make this infusion set stop infusion medicinal liquid or blood automatically like this, and can effectively stop air admission in human body.

As shown in Figure 1 again; Between intravenous needle connection tube 9 and vein needle tubing 10, also run through and be sealedly connected with a check valve; This check valve comprises valve body 70 and spool 71, and spool 71 is arranged in the inner chamber of valve body 70, the platypelloid type tubular structure of spool 71 for being processed by soft macromolecular material; One end of spool 71 entangles the import 72 of valve body 70 inner chambers, and the other end of spool 71 is closed naturally in original state.In infusion process, when the pressure at valve body 70 inner chamber imports 72 places exported the pressure at 73 places greater than valve body 70 inner chambers, spool 71 original states are the closed end of nature to be opened automatically, can carry out normal infusion like this; When infusion finishes or in infusion process; When the pressure that the patient's changing position or the walking of standing up cause valve body 70 inner chamber imports 72 places is less than or equal to valve body 70 inner chambers and exports the pressure at 73 places; Spool 71 will be closed again; Can prevent the blood of human body reverse backflow like this, thereby avoid the patient to produce panic psychology.

This infusion set in use; Inserted in medicinal liquid (blood) bottle or the bag by liquid pin 1; Push dropping funnel 4 then, medicinal liquid (blood) is stood in the valve body 60 of liquid flexible pipe 2, filter element 5 arrival shutoff valves, spool 61 buoyancy of shutoff valve move up with the liquid levels in the valve body 60; Thereby spool 61 is separated with composition surface 62; Shutoff valve is opened, and medicinal liquid this moment (blood) passes through this shutoff valve also flows into check valve valve body 70 through intravenous needle Connection Block 8 and intravenous needle connection tube 9 inner chamber import 72, exports the pressure at 73 places greater than valve body 70 inner chambers owing to the pressure at 72 places of valve body 70 inner chamber imports at this moment; Spool 71 original states are the closed end of nature will be moved and open, and medicinal liquid (blood) can enter in the human body through this check valve and through vein needle tubing 10 like this.The stage casing part of the valve body 70 of check valve should adopt elastomer macromolecule material to make, and is convenient to observe the accuracy of puncture human vein like this.

After the medicinal liquid (blood) in medicinal liquid (blood) bottle or the bag is totally lost; Liquid level will along receive liquid pin 1, receive liquid flexible pipe 2, dropping funnel 4, filter element 5 and shutoff valve descend gradually; When the liquid level in the valve body 60 dropped to certain altitude, spool 61 relied on the gravity of self to coincide with composition surface 62, and shutoff valve is ended; Infusion can stop automatically like this, and can prevent that ambient atmos from entering into human body.The pressure at 72 places of valve body 70 inner chamber imports at this moment is less than or equal to the pressure that valve body 70 inner chambers export 73 places, and spool 71 will be closed again, can prevent the blood of human body reverse backflow like this, thereby avoid the patient to produce panic psychology.In like manner in infusion process, if the patient's changing position or the walking of standing up cause when the pressure at valve body 70 inner chamber imports 72 places is less than or equal to valve body 70 inner chambers and exports the pressure at 73 places, spool 71 also again closure prevent the blood of human body reverse backflow.

Greater than the total length of shutoff valve to vein needle tubing 10 needle points, the internal diameter area of intravenous needle connection tube 9 is less than 1.5 square millimeters to the total length that receives liquid pin 1 needle point for shutoff valve in this device.As a kind of preferable setting; Shutoff valve is to receiving liquid pin 1 needle point total length less than 600 millimeters, and the internal diameter of intravenous needle connection tube 9 is less than 1.5 millimeters, like this when infusion finishes; From the valve body 60 of shutoff valve and will be less than 3 milliliters to total medicinal liquid (blood) residual quantity of inner chamber the vein needle tubing 10; Compare with the infusion set of present routine, every infusion one example can be utilized 10 milliliters to 30 milliliters of medicinal liquids (blood) more, can effectively reduce unnecessary waste.

As shown in Figure 2; Be another embodiment of this utility model; Check valve is between shutoff valve and intravenous needle Connection Block 8 in this embodiment; And the valve body 70 of check valve is connected to form infusion channel with the

valve body

60 and 8 perforations of intravenous needle Connection Block of adjacent shutoff valve, all the other structures and basically identical embodiment illustrated in fig. 1 be not so describing in detail at this.

As shown in Figure 3, the check valve described in the foregoing description can be an independent part, and valve body 70 imports of check valve are an international standard female cone hole 74 of 6: 100, and the outlet of valve body 70 is an international standard cylindrical conehead 75 of 6: 100.This check valve is arranged to an independent part; Can make it as independently product and other a transfusion instrument combination use; Thereby make existing transfusion apparatus also can realize preventing the function of blood back flow; Operation principle among its operation principle and the embodiment one is identical, so be not described in detail at this.

As shown in Figure 4, the import of valve body 70 that also can check valve is set to an international standard female cone hole 74 of 6: 100, and makes the valve outlet of check valve and intravenous needle connection tube 9 connect the structure that links into an integrated entity.Adopt this structure can make check valve and intravenous needle connection tube 9 form an independently venous transfusion needle assembly; So just need not to re-use intravenous needle Connection Block 8 embodiment illustrated in fig. 1, thereby this infusion set is effectively saved production cost guaranteeing to have under the prerequisite of identical function.

More than disposable safe infusion set that this utility model embodiment is provided carried out detailed introduction; For one of ordinary skill in the art; Thought according to this utility model embodiment; On the specific embodiment and range of application, all can change to some extent; Therefore this description only is used for should not be construed as the restriction to this utility model in this utility model embodiment is described, and all any changes of being made according to this utility model design philosophy are all within the protection domain of this utility model.

Claims

1. disposable safe infusion set; Comprise an infusion channel, said infusion channel be provided with successively connect connect receive the liquid pin, receive the liquid flexible pipe, dropping funnel, filter element, intravenous needle connection tube and vein needle tubing, the said liquid hose overcoat that receives has flow regulator; It is characterized in that: said infusion channel is provided with a check valve; Said check valve comprises valve body and spool, and when the pressure in said body cavity exit during greater than the pressure of said body cavity import department, said check valve is closed automatically.

2. disposable safe infusion set according to claim 1 is characterized in that: also be provided with a shutoff valve on the said infusion channel, the spool proportion of said shutoff valve is less than the proportion of medicinal liquid or blood.

3. disposable safe infusion set according to claim 2 is characterized in that: be provided with an intravenous needle Connection Block between said filter element and the said intravenous needle connection tube, said shutoff valve is between said filter element and said intravenous needle Connection Block.

4. disposable safe infusion set according to claim 3 is characterized in that: said check valve is between said shutoff valve and said vein needle tubing.

5. disposable safe infusion set according to claim 2 is characterized in that: the spool proportion of said shutoff valve is less than 1 gram/cm ³

6. disposable safe infusion set according to claim 1 is characterized in that: the area of said intravenous needle connection tube is less than 1.5 square millimeters.

7. disposable safe infusion set according to claim 1; It is characterized in that: the valve body import of said check valve is an international standard female cone hole of 6: 100, and the valve outlet of said check valve and said intravenous needle connection tube connect the structure that links into an integrated entity.

8. disposable safe infusion set according to claim 1; It is characterized in that: the platypelloid type tubular structure of said spool for processing by soft macromolecular material; One end of said spool entangles the import of said body cavity, and the other end of said spool is closed naturally in original state.

9. disposable safe infusion set according to claim 1 is characterized in that: the valve body import of said check valve is an international standard female cone hole of 6: 100, and the valve outlet of said check valve is an international standard cylindrical conehead of 6: 100.

10. disposable safe infusion set according to claim 1 is characterized in that: said shutoff valve arrives the sharp total length of said intravenous needle bobbin to the said total length of liquid pin needle point that receives greater than said shutoff valve.