Relief valve and have the fluid and blood transfusion apparatus of this relief valve
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically a kind of relief valve and have the fluid and blood transfusion apparatus of this relief valve.
Background technology
Transfusion device is mainly used in to patient and carries medicinal liquid or blood, and its structure mainly comprises contact pin, upper tubing, dropping funnel, following tube for transfusion, by-pass cock and entry needle.When the transfusion device of employing said structure is infused to patient, need medical personnel to check the transfusion situation at any time, especially giving some old men or child transfusion, not for a long time at the residue medicinal liquid, medical personnel then can not leave usually, finish until patient's transfusion infusion needle is extracted.If liquid exhausts, but infusion needle can cause air to enter in the patient body by transfusion device owing to the effect of negative pressure in the tube for transfusion also in human body so, thereby the patient is damaged or even dead.
In order to solve the problems of the technologies described above, in the prior art, Chinese patent literature CN201061645Y discloses a kind of disposable use automatic-diversion closure transfusion device, mainly is made up of needle for inserting bottle, automatic-diversion closure dropping funnel, flexible pipe, liquid medicine filter, flow regulator and venoclysis needle; Described automatic-diversion closure dropping funnel divides two parts to constitute, wherein cover floats the first half that the automatic-diversion closure dropping funnel is formed in the bonding back of back-up ring with limit on the dropping funnel, the medical plastic spare and the aseptic medical silica-gel driving fit part of floating member are housed in the dropping funnel drain pan, the first half and the dropping funnel drain pan of described dropping funnel are bondd, constitute a complete automatic-diversion closure dropping funnel device.
In the above-mentioned prior art, the dropping funnel drain pan is near double-deck jacket wall is arranged on the aperture position that overlaps on the dropping funnel, set of shells is nested in the double-deck jacket wall of dropping funnel drain pan and achieves a butt joint on the dropping funnel, and floating member is limited in the certain space of dropping funnel drain pan with spacing back-up ring, floating member fluctuates between the bottom of spacing back-up ring and dropping funnel drain pan, can guarantee that dropping funnel is in open mode when liquid is arranged, can when in dropping funnel, having liquid, dropping funnel not sealed again; But, in the prior art, in disposable use automatic-diversion closure transfusion device, floating member mainly is to consider its buoyancy, though it can avoid air to enter in the patient body by transfusion device the patient is damaged, but after the liquid in the transfusion device or blood were totally lost, endovascular blood pressure was greater than pressure in the transfusion device, and the floating member self gravitation is little, can not provide enough pressure and blood pressures to carry out balance, thereby the blood in the blood vessel blood back phenomenon occur easily along the transfusion device backflow.
The utility model content
For this reason, technical problem to be solved in the utility model is that employed floating member self gravitation is less in the prior art, can not provide enough pressure and blood pressures in the blood vessel to carry out balance, thereby the blood in the blood vessel refluxes along transfusion device easily, the blood back phenomenon appears, and then provide a kind of and when blood transfusion and infusion, provide buoyancy, gravity after finishing, blood transfusion and infusion is provided, and effectively avoid the relief valve of blood back and have the fluid and blood transfusion apparatus of this relief valve.
For solving the problems of the technologies described above, a kind of relief valve of the present utility model, described relief valve places in the dropping funnel, and it comprises ebonite accessory and flexible glue base,
Described ebonite accessory comprises floating cup and the floating head that is connected with described floating cup, described floating cup formation has opening floating cup cavity up, described floating head is arranged at the top of described opening, be provided with between described floating cup and described floating head and can make liquid enter clearance channel in the floating glass cavity, described floating head size is more than or equal to described opening size; Described flexible glue base is arranged at described floating cup bottom.
Described floating cup was realized with being connected by the fixed support that is arranged between described floating cup cavity inside and the described floating head bottom of described floating head.
Described fixed support comprises that the center that is arranged on described floating cup cavity inside is provided with the cylinder of through hole, and is arranged in the floating head projection of described floating head towards described floating cup one side, and described floating head projection matches with described through hole and is connected.
Described cylinder runs through the bottom of described floating cup, is arranged at the described through hole at described cylinder center and matches with flexible glue base projection on being arranged at described flexible glue base and be connected.
Described floating head is circular writing board shape, forms downward opening floating head cavity in a side of described circular dull and stereotyped described floating cup cavity.
A kind of fluid and blood transfusion apparatus with above-mentioned relief valve comprises contact pin, upper tubing, dropping funnel, following tube for transfusion, by-pass cock, entry needle,
Described dropping funnel is pegged graft by last dropping funnel and following dropping funnel and is formed, and described relief valve places down in the dropping funnel, is provided with the stopping means of band leakage passage in the described dropping funnel, is used to limit the extreme higher position of described relief valve come-up;
The centrage of described relief valve and the described centrage of tube for transfusion down coincide, and described flexible glue base seals described infusion hole down.
Outside the zone of described stopping means distance center place 1/3~2/3 floating head radius size, described leakage passage is set.
Institute's art leakage passage is a liquid-leaking nozzle.
Described dropping funnel down and the described splicing position of going up dropping funnel are double-decker, form the scrobicular ring that matches and peg graft with described upward dropping funnel between described double-deck internal layer and the skin.
The described dropping funnel of going up is plugged in the described inside of dropping funnel down.
Technique scheme of the present utility model has the following advantages compared to existing technology,
(1) in the relief valve described in the utility model, described floating cup formation has opening floating cup cavity up, and described floating head is arranged at the top of described opening, is provided with to make liquid enter the clearance channel of floating in glass cavity between described floating cup and described floating head; During use, the liquid or the blood that drip to the dropping funnel from upper tubing did not have floating cup, flowed in the floating cup by the clearance channel between floating cup and the floating head, and described floating head provides to buoyancy, preferred described floating head forms downward opening floating head cavity, especially as the washbowl left-hand thread on the water surface, bigger buoyancy can be provided, relief valve can normally float when making, after liquid bottle or blood bag use up, liquid level in the dropping funnel begins to descend, and when liquid flowed out fully, the flexible glue base was closed the passage of tube for transfusion circulation downwards; And still have certain liquid or blood in the floating cup this moment, therefore can provide enough gravity and blood pressures in the blood vessel to carry out balance, effectively avoided the generation of blood back phenomenon.
(2) in the relief valve described in the utility model, described floating cup was realized with being connected by the fixed support that is arranged between described floating cup cavity inside and the described floating head bottom of described floating head, be that described clearance channel is that fixed support holds up described floating head, make and have the gap between described floating head and the floating cup opening, described ebonite accessory passage more strengthens, liquid flows into more smoothly in the floating cup and goes when guaranteeing to use, and can not destroy floating cup-shaped simultaneously, makes floating cup capacity maximum.
(3) the utlity model has in the drop liquid/blood transfusion apparatus of above-mentioned relief valve, described relief valve places down in the dropping funnel, is provided with the stopping means of band leakage passage in the described dropping funnel, is used to limit the extreme higher position of described relief valve come-up; Can guarantee that relief valve can freely move up and down, can guarantee that again liquid or the blood in the dropping funnel can flow in the floating cup,, guarantee that further the flexible glue base can accurately seal the following tube for transfusion mouth of pipe for relief valve provides enough gravity.
(4) the utlity model has in the drop liquid/blood transfusion apparatus of above-mentioned relief valve, outside the zone of described stopping means distance center place 1/3~2/3 floating head radius size, described leakage passage is set, be that described leakage passage is arranged at except that on the excentral position of described stopping means, liquid or blood flow down from upper tubing and drop in the stopping means center position, and can directly not drop on the relief valve, but the leakage passage beyond from the center slowly flows down, thereby avoid the impact of the flow velocity of liquid or blood to relief valve, it is more steady to make that relief valve fluctuates.
(5) the utlity model has in the drop liquid/blood transfusion apparatus of above-mentioned relief valve, described dropping funnel down and the described splicing position of going up dropping funnel are double-decker, form the scrobicular ring that matches and peg graft with described upward dropping funnel between described double-deck internal layer and the skin, be convenient to be installed together after described relief valve is put into wherein.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, this utility model is described in further detail, wherein below
Fig. 1 a is the main shaft cutaway view of relief valve described in the utility model;
Fig. 1 b forms the opening sketch map of floating head cavity down in the relief valve described in the utility model;
Fig. 2 is that fixed support is cylindrical sketch map in the relief valve described in the utility model;
Fig. 3 is that fixed support is the sketch map of tetragon cylinder in the relief valve described in the utility model;
Fig. 4 is that fixed support is the floating cup vertical view of tetragon cylinder in the relief valve described in the utility model;
Fig. 5 is a drop liquid/blood transfusion apparatus sketch map described in the utility model;
Fig. 5 (1) is that last dropping funnel all is the sketch map of single layer structure with following dropping funnel in the described drop liquid/blood transfusion apparatus of Fig. 4;
Fig. 5 (2) is that following dropping funnel all is double-deck sketch map in the described drop liquid/blood transfusion apparatus of Fig. 4;
Fig. 6 be in the drop liquid/blood transfusion apparatus described in the utility model the leakage passage on described stopping means around the stopping means sketch map of central point uniform distribution liquid-leaking nozzle;
Fig. 7 is a hexagon stopping means sketch map in the drop liquid/blood transfusion apparatus described in the utility model.
Reference numeral is expressed as among the figure: 1-relief valve, 12-ebonite accessory, the floating cup of 121-, 1211-floats cup bottom, the floating cup of 1212-medial wall, the floating cup of 1213-cavity, the floating cup of 1214-cavity top, 122-floating head, 1221-floating head projection, 1222-floating head cavity, 13-flexible glue base, 131-flexible glue base projection, the 14-fixed support, 141-cylinder, 1411-through hole, 142-tetragon cylinder, 143-feeler, 2-contact pin, the 3-upper tubing, 4-dropping funnel, the last dropping funnel of 41-, dropping funnel under the 42-, tube for transfusion under the 5-, 6-by-pass cock, the 7-entry needle, the 8-stopping means, 81-leakage passage, 9-clearance channel.
The specific embodiment
Embodiment 1
Relief valve described in the utility model, described relief valve 1 places in the dropping funnel 4, it comprises ebonite accessory 12 and flexible glue base 13, described ebonite accessory 12 comprise floating cup 121 with described floating cup 121 floating heads that are connected 122, described floating cup 121 forms opening floating cup cavity 1213 up, described floating head 122 is arranged at the top of floating cup cavity 1213, be provided with between described floating cup 121 and described floating head 122 and can make liquid enter clearance channel 9 in the floating cup cavity 1213, described floating head 122 sizes are more than or equal to described floating glass of cavity top 1214 sizes; Described flexible glue base 13 is arranged at described floating cup bottom 1211;
Floating head described in the present embodiment 122 is circular writing board shape, and described clearance channel 9 is the hole (seeing shown in Fig. 1 a) of floating cup 121 and floating head 122 compositions.
Further, as disposable mode, present embodiment forms downward opening floating head cavity 1222 (seeing shown in Figure 2) in a side of described circular dull and stereotyped described floating cup cavity 1213 on the basis of the foregoing description.
As disposable mode, floating head described in the present embodiment 122 is an arc-shaped curved surface, and described floating head cavity 1222 is by the arc-shaped curved surface brake forming (seeing shown in Fig. 1 b) of floating head.
Embodiment 2
Present embodiment is on the basis of embodiment 1, also be provided with fixed support 14 in described floating cup cavity 1213 inside, described floating cup 121 was realized with being connected by the fixed support 14 that is arranged between described floating cup cavity 1213 inside and described floating head 122 bottoms of described floating head 122;
Described fixed support 14 is set in the present embodiment comprises that the center that is arranged on described floating cup cavity 1213 inside is provided with the cylinder 141 of through hole 1411, and be arranged in the floating head projection 1221 of described floating head 122 towards described floating cup 121 1 sides, described floating head projection 1221 matches with described through hole 1411 and is connected;
Described cylinder 141 runs through the bottom of described floating cup 121, is arranged at the described through hole 1411 at described cylinder 141 centers and matches with flexible glue base projection 131 on being arranged at described flexible glue base 13 and be connected (seeing shown in Figure 2).
As disposable mode, fixed support described in the present embodiment 14 replaces with tetragon cylinder 142, the extension of described tetragon cylinder 142 bottoms is provided with a plurality of feelers 143, described feeler 143 is connected with described floating cup medial wall 1212, and the other end extends (seeing Fig. 3 or shown in Figure 4) along described floating cup cavity top 1214; Described floating head 122 sizes are greater than described floating cup cavity top 1214 sizes.
Embodiment 3
Drop liquid/blood transfusion apparatus with above-mentioned relief valve 1 described in the utility model, comprise contact pin 2, upper tubing 3, dropping funnel 4, following tube for transfusion 5, by-pass cock 6, entry needle 7, described dropping funnel 4 is pegged graft by last dropping funnel 41 and following dropping funnel 42 and is formed, described relief valve 1 places down in the dropping funnel 42, be provided with the stopping means 8 of band leakage passage 81 in the described dropping funnel 4, the extreme higher position that is used to limit described relief valve 1 come-up; The centrage of described relief valve 1 and the described centrage of tube for transfusion 5 down coincide, and 13 pairs of described infusion holes down of described flexible glue base seal (seeing shown in Figure 5);
In the present embodiment, described stopping means 8 is for being arranged on the described limit plunger at dropping funnel 42 places down, and leakage passage 81 is around equally distributed four liquid-leaking nozzles of central point (seeing shown in Figure 6) on described stopping means 8; In the present embodiment, the described dropping funnel 41 of going up is plugged in the described inside (seeing shown in Fig. 5 (1)) of dropping funnel 42 down, has avoided like this owing to the two not tight situation that causes occurring liquid leakage in the process of liquid drippage of pegging graft.
Certainly, as disposable embodiment, described stopping means 8 also can be arranged on dropping funnel 41 places according to actual needs, can flow in the floating cup 121 as long as can guarantee the liquid of dropping funnel 4.
In the foregoing description, described upward dropping funnel 41 and described dropping funnel 42 down are single layer structures, grafting between the two is exactly simple the insertion, see shown in Fig. 5 (1), in order to realize the stability of above-mentioned grafting better, as embodiment that can conversion, in the fluid and blood transfusion apparatus described in the utility model, described dropping funnel 42 down and the described splicing position of going up dropping funnel 41 can be set to double-decker, see shown in Fig. 5 (2), formed a scrobicular ring in this double-decker between internal layer and the skin, graftings that match of described scrobicular ring and the described lower limb of going up dropping funnel 41 realized described go up dropping funnel 41 and the described firm grafting of descending between the dropping funnel 42.
The purpose that leakage passage 81 is set is to realize the smooth and easy drippage of liquid or blood, as disposable embodiment, this utility model is on the basis of the foregoing description, also described leakage passage 81 can be replaced with the leakage passage 81 (seeing shown in Figure 7) that hexagon and dropping funnel wall are formed, can certainly be arranged to the Kong Junke of any regular or irregular shape.
Fluid and blood transfusion apparatus described in the foregoing description in use, adjust by-pass cock 6, the speed that tube for transfusion 5 effusive speed flow into less than upper tubing 3 is set down, blood in medicinal liquid in the medicine bottle or the blood bag is by entering dropping funnel 4 through upper tubing 3, the center position that the liquid of upper tubing 3 drippages or blood at first drop in stopping means 8, leakage passage 81 through stopping means 8 slowly flows into dropping funnel 42 down, when dropping funnel 4 bottoms are long-pending when liquid or blood are arranged, the outer surface of liquid or the floating cup 121 of blood picking-up upwards floats with liquid level, thereby opens the passage of dropping funnel 4 and following tube for transfusion 5; Along with blood in liquid in the medicine bottle or the blood bag continues to rise, relief valve 1 limited device 8 stops and can not continue to come-up, liquid or blood slowly flow in the floating cup cavity 1213 of floating cup 121 by the gap between floating cup 121 and the floating head 122, floating cup 121 still floated in the dropping funnel 4 and can not close the passage of dropping funnel 4 and following tube for transfusion 5 this moment, when blood uses up in liquid in the medicine bottle or the blood bag, no longer including liquid or blood in the dropping funnel 4 flows into, but still contain a certain amount of medicinal liquid or blood, along with the medicinal liquid in the dropping funnel 4 or blood continue to reduce; floating cup 121 also descends along with the decline of the horizontal plane of medicinal liquid or blood; when not having medicinal liquid or blood in the dropping funnel 42 instantly; 13 contacts of flexible glue base are dropping funnel 4 bottoms down; thus realize described infusion hole is down sealed; so the air in the dropping funnel 4 just can not enter down tube for transfusion 5 by infusion hole down; enter then in the human body,, ensured patient's life security so avoided the appearance of blood back phenomenon.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of this utility model creation.