CN209270455U - The disposable blood perfusion device of pollution-proof - Google Patents

Abstract

The utility model discloses a kind of disposable blood perfusion device of pollution-proof, can body is column, and the top and bottom end of can body are respectively arranged with liquid outlet and inlet；The side wall of the can body is provided with heparin inlet；Heparin mouth gasket is provided in the heparin inlet, the opening of heparin inlet is soldered the heparin inlet cap sealed of connection.The disposable blood perfusion device of the utility model pollution-proof is by being arranged heparin mouth that can be self-enclosed in can body side wall；It is inserted into heparin mouth using the syringe needle of needle tubing, gasket is passed through and injects heparin.After syringe needle extraction, the gasket in heparin mouth seals syringe needle hole, and air is avoided to enter perfusion device inner cavity from syringe needle hole.So as to avoid the secondary opening of product, the microbiological contamination probability of interiors of products is greatly reduced, so that the safety of product in use is improved, meanwhile, operating process is simplified, the time of test tube of hepari processing is shortened.

Description

The disposable blood perfusion device of pollution-proof

Technical field

The utility model relates to a kind of disposable blood perfusion devices of pollution-proof, are applied to field of blood purification.

Background technique

It is impaired that the kidney trouble of progressive can make the nephron, and makes its gradually loss of function.Once renal function is not enough to tie up The balance for holding human metabolism will appear renal failure, and severe one switchs to uremia and threat to life.This terminal phase kidney The annual morbidity of patient is 50~150 people/a population of one million in the world, according to the investigation of drug in some provinces, China's terminal Phase disease incidence is about 100 people/a population of one million, in order to give treatment to these dangerous patients that are on the verge of death, is just had early in the middle of the 19th century The method that people proposes dialysis removes diffusible substance from the blood of patients with renal failure, so contact patient's poisoning symptom can Energy.By the effort of last 100 years, regenerated cellulose dialyzer is applied to clinic for the first time, started by nineteen forty-three Dutchman Kolff The manually new era of device substitution renal function, in fact, the basic fundamental concept of artificial kidney is to draw the blood of patient In vitro, complete by the device (such as haemodialyser, transfusion filters, blood perfusion device) using the production of different technologies principle The transmitting and removing of solute and water in pairs of blood, then by purified blood recovery human body, achieve the purpose that treatment, that is, pass through The biophysical mechanism of artificial kidney is completed to metabolic waste, poisonous substance, virulence factor and water, the electrolyte that should be removed in blood Transmitting and removing, to reach the balance of interior environment.In recent years, it grinds on the basis of interpenetrating due to each subject, artificial kidney Study carefully and achieve greater advance, advance the exploitation of new equipment, some new technologies occurs.

Blood perfusion (Hemoperfusion, HP), also referred to as Blood index, it is and solid when referring to that whole blood flows through perfusion device Phase adsorbent (by for active carbon or macroporous absorbent resin) contact, passes through suction-operated and removes endogenous or exogenous poison Element, such as uremic toxins and internal excess drug are removed, later by purified blood recovery patient's body, to reach treatment Purpose.When due to using normal hemodialysis procedure at present, the small molecule toxins such as creatinine, uric acid can only be removed, but micro- to β 2- The elimination effect of macromolecular toxins is not good enough in globulin, parathormone etc., and long term hemodialysis makes macromolecular toxins in patient Constantly accumulation is to cause damage or even the threat to life of body.And blood perfusion can by physical absorption, chemisorption and The modes such as absorption that biology is affine adsorb the harmful poison of macromolecular in heterointoxication substance, creatinine, microglobulin of patient's body etc. Object can reach preferable therapeutic effect by being used in series for blood perfusion and haemodialysis.

Blood coagulation occurs when blood flows through perfusion device in order to prevent, needs to carry out test tube of hepari processing to perfusion device before the treatment. Existing processing mode is to extract a certain amount of heparin injection using disposable sterilized syringe, by opening on perfusion device The protection nut at end injects, and the protective cap turned on needs to be placed in sterile treatment towel, to prevent from polluting；From nothing after injection Protective cap is taken out in bacterium treatment towel, screws end cap.But for medical staff, such processing mode is relatively complicated, and opens When lid injection, there are risks contaminated inside perfusion device.

Utility model content

It is unique that the purpose of the utility model is to provide a kind of structure novels, using simplicity, and can effectively prevent perfusion It is contaminated inside device and uses the safe disposable blood perfusion device of pollution-proof；The specific technical proposal is:

A kind of disposable blood perfusion device of pollution-proof, can body are column, and the top and bottom end of can body are set respectively It is equipped with liquid outlet and inlet；The side wall of the can body, liquid outlet end cap and setting or many places are equal at one in inlet end cap It is provided with heparin inlet；Heparin mouth gasket is provided in the heparin inlet, the opening of heparin inlet, which is soldered, to be connected The heparin inlet cap sealed connect.

Further, the inner cavity of the heparin inlet is provided with retaining ring, and the heparin mouth gasket is provided with and the gear The boss of adaptation is enclosed, prevents heparin mouth gasket from falling into the can body intracavitary.

Further, the can body top and bottom end are provided with end cap；The end cap is connected through a screw thread with can body；It is described Inlet and the liquid outlet are separately positioned on the end cap on bottom end and top.

Further, the liquid outlet and the inlet are provided with Rule head；Internal screw thread is provided with outside Rule head Fixing port；The screw-internal thread fit of the external screw thread and the fixing port in sealing in nut cap, seals fixing port.

Further, Rule head sealing-plug of sealing Rule head is provided between Rule head and the sealing.

Further, the both ends of the can body are provided with the filter screen mounting groove of installation filter screen and gasket.

Further, two annular protrusions are provided in the side wall of the can body, the heparin inlet is arranged in two rings Between shape protrusion.

Further, the can body is made of medical grade PP or PC.

Further, it is provided with tearable mouth at the top of the heparin inlet nut cap and easily tears handle convenient for tearing notch.

Further, the heparin mouth gasket, gasket and Rule head sealing-plug are all made of medical grade silicon rubber and are made.

The disposable blood perfusion device of the utility model pollution-proof can be self-enclosed by being arranged in can body side wall Heparin inlet；It is inserted into heparin mouth using the syringe needle of disposable sterilized syringe, gasket is passed through and injects heparin.Syringe needle is taken out After out, the gasket in heparin mouth seals syringe needle hole, avoids air from entering perfusion device inner cavity from syringe needle hole, avoids product Secondary opening, greatly reduces the microbiological contamination probability of interiors of products, to improve the safety of product in use, together When, operating process is simplified, the time of test tube of hepari processing is shortened.

Detailed description of the invention

Fig. 1 is 1 perfusion device structural schematic diagram of embodiment；

Fig. 2 is 2 perfusion device structural schematic diagram of embodiment.

In figure: 1, heparin mouth gasket；2, heparin inlet nut cap；3, can body；4, filter screen；5, end cap；6, it seals Pad；7, nut cap；8, Rule head sealing-plug.

Specific embodiment

The utility model is made a more thorough explanation below with embodiment.The utility model can be presented as it is a variety of not Same form, should not be construed as limited to the exemplary embodiments described herein.

The spatially relative terms such as "upper", "lower" " left side " " right side " can be used herein for ease of explanation, for saying Relationship of the elements or features relative to another elements or features shown in bright figure.It should be understood that in addition in figure Except the orientation shown, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure Device is squeezed, and is stated as being located at other elements or the element of feature "lower" will be located into other elements or feature "upper".Cause This, exemplary term "lower" may include both upper and lower orientation.Device, which can be positioned in other ways, (to be rotated by 90 ° or is located at Other orientation), it can be interpreted accordingly used herein of the opposite explanation in space.

Embodiment 1

As shown in Figure 1, the disposable blood perfusion device of pollution-proof in the present embodiment, can body 3 is column, can body 3 top and bottom end are respectively arranged with liquid outlet and inlet；The side wall of can body 3 is provided with heparin inlet, heparin inlet It is connected to the inner cavity of can body；Heparin mouth gasket 1 is provided in heparin inlet, the opening of heparin inlet is stamped heparin Inlet nut cap 2；The opening sealing means of heparin inlet nut cap 2 and heparin inlet are welding.With the syringe with syringe needle After the piercing of heparin injections dedicated port；Syringe needle passes through heparin mouth gasket and heparin is directly injected into perfusion device in preservation liquid, Without operation of uncapping, without being opened before product use；Extract syringe needle, although heparin inlet nut cap 2 there are pin hole, But heparin mouth gasket has elasticity, it can be by pin hole self-closed.It is such to design the microbiological contamination machine for reducing interiors of products Rate, the safety of product in use are improved.

Heparin inlet can not be connected to the inner cavity of can body, and heparin inlet nut cap 2, liver need to be successively pierced through by syringe needle Heparin can be injected the inner cavity of can body by the diaphragm between plain mouth gasket 1 and heparin inlet and the inner cavity of can body It is interior.

Retaining ring can also be set in the inner cavity of heparin inlet, retaining ring can be annular protrusion, be also possible to annular arrangement Several protrusions can block heparin mouth gasket 1.The boss of heparin mouth gasket 1 setting and retaining ring size fit；Boss It is stuck on retaining ring；It is inserted through heparin mouth gasket 1 again after syringe needle pierces through heparin inlet nut cap 2, retaining ring can prevent heparin mouth Gasket 1 avoids heparin mouth gasket 1 from falling into can body intracavitary to the intracavitary movement of can body.

Can body top and bottom end in embodiment are provided with end cap 5；End cap 5 is connected through a screw thread with can body；Inlet It is arranged on the inlet end cap of bottom end；The liquid outlet end that top is arranged in liquid outlet covers.3 both ends of can body are respectively provided with end cap 5, Not only symmetrical configuration, it is easy to make, and facilitate and be packed into filter screen 4 and gasket 6 from both ends；It is easy to assembly.

Liquid outlet and inlet are provided with Rule head；It can be to avoid using syringe needle using modular connection；Replace perfusion device More convenient operation.The fixing port that internal screw thread is provided with outside Rule head is connect with nut cap.Nut cap 7 is made of inside and outside two circle；Inner ring For sealing, sealing passes through the screw-internal thread fit of external screw thread and fixing port, and outer ring is set in outside fixing port outer wall；It is fixed after screwing Space between the sealing and outer ring of mouth wall insertion nut cap, the top end face of fixing port wall and nut cap 7 are in close contact, and seal fixation Mouthful.This sealing structure extends the seal distance of sealing surface and Rule head opening, and sealing performance is more preferable.

In order to preferably seal, Rule head sealing-plug of sealing Rule head can also be set between Rule head and nut cap 7 8。

The filter screen mounting groove of installation filter screen and gasket can also be respectively provided at the both ends of can body；Pass through mounting groove pair Filter screen 4 and the gap of 3 inner cavity of can body, when screwing end cap 5, are sealed by filter screen positioning using end cap 5；Reduce microbiological contamination machine Meeting.

Can body should be made of medical grade PP or PC.

Heparin mouth gasket, gasket and Rule head sealing-plug should all be made of medical grade silicon rubber.

Heparin inlet in the present embodiment can also be arranged in liquid outlet end and cover, using with side wall heparin inlet phase Same structure.Above structure can also be arranged on inlet end cap.It is of course also possible in side wall, inlet end cap and liquid out Mouth three position combination of two of end cap, are arranged heparin inlet；Heparin inlet is respectively provided at even 3；To facilitate medical staff More field condition selects.

Outside heparin inlet nut cap 2 is exposed to, it is difficult to ensure that not being contaminated.Syringe needle passes through contaminated heparin and injects lid 2 surface of cap is also possible that the pollutant by 2 surface contamination of heparin inlet nut cap brings 3 inner cavity of can body into.In order to reduce syringe needle Across 2 bring pollution risk of heparin inlet nut cap；The top of heparin inlet nut cap 2 can also be arranged cyclic annular or be more than half The thin-walled of ring is as tearable mouth and is used to open the handle of the tearable mouth as easily tearing handle.Before injecting heparin, pulls and easily tears handle, Tearable mouth is easily torn, exposes the heparin mouth gasket 1 of the inside germ-free condition, is inserted into disposable aseptic injection at once The syringe needle of device.At this moment, syringe needle enters 3 inner cavity of can body from sterile heparin mouth gasket 1, it is possible to reduce pollution.

Embodiment 2

As shown in Fig. 2, the present embodiment is substantially the same manner as Example 1, it is distinguished as being provided with two gears in the side wall of can body Circle is used to support filter screen；Heparin inlet is arranged between two retaining rings.By increasing by two in heparin inlet two sides Adsorbent is divided into two parts by filter screen, in the intermediate space for forming liquid of only withing a hook at the end.When injecting heparin, not no adsorbent Stop, heparin can quickly be spread in retaining liquid, it is possible to reduce time of repose.

Existing perfusion device class product is by protection nut, big end cap, can body, filter screen (rack), adsorbent, filling liquid group At；Can body both ends are assembled with two big end cap respectively, are sealed with silicagel pad, and big end covers to be protected with two respectively again Nut assembly, and ensured using silica gel sealing plug as sealing.When perfusion starting, need to carry out product static heparin Change, thus anti-hemostasis-coagulation.The basic operation of test tube of hepari is that a certain amount of heparin is passed through note after screwing off perfusion device protection nut Emitter screws on stand-by after standing 30 minutes after protecting nut after being injected into can body at the big end cap Rule head of perfusion device.

The disposable blood perfusion device of pollution-proof in the utility model has the advantage that

The first, the secondary opening of product is avoided

Original test tube of hepari operation will cause the secondary opening of product, although protection nut is put in test tube of hepari operating process It is placed in sterile treatment towel, but can have certain microbiological contamination probability, to pollute perfusion device product and subsequent pre- washing pipe road. The utility model changes product structure, and an independent heparin inlet is increased on can body, is provided in heparin inlet Gasket.With the syringe with syringe needle after the piercing of heparin injections dedicated port；Syringe needle passes through gasket and is directly injected into perfusion device In interior preservation liquid, without operation of uncapping, without being opened before product use；Syringe needle is extracted, gasket is automatic by pin hole Closing.Such to design the microbiological contamination probability for reducing interiors of products, the safety of product in use is improved.

The second, the operation of medical staff is simplified.

Above-mentioned example is only intended to illustrate the utility model, and in addition to this, also there are many different embodiments, and these Embodiment be all those skilled in the art after comprehension the utility model thought it is also envisioned that therefore, no longer arrange one by one herein It lifts.

Claims (10)

1. a kind of disposable blood perfusion device of pollution-proof, can body is column, and the top and bottom end of can body are respectively set There are liquid outlet and inlet；It is characterized in that, being arranged at the side wall of the can body, liquid outlet end cap and one in inlet end cap Or many places are provided with heparin inlet；Heparin mouth gasket, the opening of heparin inlet are provided in the heparin inlet It is soldered the heparin inlet cap sealed of connection.

2. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the heparin inlet Inner cavity and the inner cavity of the can body between there are the inner cavities of diaphragm or the heparin inlet to be connected to the inner cavity of can body, in liver The bottom of the inner cavity of plain inlet is provided with retaining ring, and the heparin mouth gasket is provided with the boss being adapted to the retaining ring, resistance Only it is intracavitary to fall into the can body for heparin mouth gasket.

3. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the can body top and Bottom end is provided with end cap；The end cap is connected through a screw thread with can body；The inlet and the liquid outlet are separately positioned on On the end cap on bottom end and top.

4. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the liquid outlet and institute It states inlet and is provided with Rule head；The fixing port with internal screw thread is provided with outside Rule head；In sealing in nut cap The screw-internal thread fit of external screw thread and the fixing port, seals fixing port.

5. the disposable blood perfusion device of pollution-proof as claimed in claim 4, which is characterized in that Rule head and institute State Rule head sealing-plug that sealing Rule head is provided between sealing.

6. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the both ends of the can body It is provided with the filter screen mounting groove of installation filter screen and gasket.

7. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the side wall of the can body Two annular protrusions are inside provided with, the heparin inlet is arranged between two annular protrusions.

8. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the can body is using doctor It is made of grade PP or PC.

9. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the heparin inlet It is provided with tearable mouth at the top of nut cap and easily tears handle convenient for tearing notch.

10. the disposable blood perfusion device of pollution-proof as described in claim 1, which is characterized in that the heparin mouth is close Packing, gasket and Rule head sealing-plug are all made of medical grade silicon rubber and are made.