CN101745161A - Medical low-level uniform pressure infusion set and using method thereof - Google Patents
Medical low-level uniform pressure infusion set and using method thereof Download PDFInfo
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- CN101745161A CN101745161A CN200910114697A CN200910114697A CN101745161A CN 101745161 A CN101745161 A CN 101745161A CN 200910114697 A CN200910114697 A CN 200910114697A CN 200910114697 A CN200910114697 A CN 200910114697A CN 101745161 A CN101745161 A CN 101745161A
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- 238000001802 infusion Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 9
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 3
- 210000001364 upper extremity Anatomy 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 4
- 239000008155 medical solution Substances 0.000 abstract 1
- 210000003462 vein Anatomy 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 208000027877 Disorders of Sex Development Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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Abstract
The invention relates to a low-level uniform pressure infusion set and a using method thereof. The inside of a bottle body is provided with an inner liner for containing medical solution and a pressure device. The bottom of the infusion set is provided with a pedestal. The pedestal is fixed with coaxial limit cylinder and spring fixed sleeve. The inner wall of the limit cylinder is provided with a limit groove inclined downward, while the bottom end thereof is provided with a check groove. The outer wall of the spring fixed sleeve is provided with a positioning block. A movable sleeve is arranged in the limit cylinder. Limit convex tooth at the outer edge of the upper end plate of the movable sleeve is embedded in the limit groove and is clamped in the check groove. A piston is buckled on the spring fixed sleeve of the pedestal. A clamping groove at the lower edge of the cylinder body of the piston is embedded in the positioning block of the spring fixed sleeve. A primary spring is positioned between the spring fixed sleeve and the limit cylinder. The lower end of the primary spring is pressed against the upper end of the pesestal and is connected with a sliding top plate. A secondary spring is positioned between the limit cylinder and the movable sleeve. The lower end of the secondary spring is pressed against the upper end of the pedestal and is pressed against the upper end plate of the movable sleeve. A tertiary spring is positioned in the movable sleeve. The lower end of the tertiary spring is pressed against the lower end plate. The upper end of the tertiary spring is pressed against the sliding top plate. When the infusion set is in use, the sliding top plate presses the three springs and the secondary spring exerts the force later to make the inner liner pressed uniformly and make the infusion pressure constant.
Description
(1) technical field
The present invention relates to medical infusion device, be specially a kind of medical low-level uniform pressure infusion set and using method.
(2) background technology
Venous transfusion is a kind of Therapeutic Method of using always.Traditional infusion method is that the transfusion medicine bottle is placed certain height, utilizes the gravity drop of liquid to overcome the human vein blood pressure, and medicinal liquid is entered in the human vein through syringe needle.Low-order travenol infuser then is with pressure apparatus medicinal liquid to be pressed in the human vein blood vessel.Low-order travenol infuser need not to hang, and can place patient by the side of or carry.Be specially adapted to outdoor first aid, open-air rescue, for example limited occasions that the situation is critical of condition such as antidetonation scene, military battlefield.As the patent No. is 200410081363 Chinese invention patent " low position medical infusion apparatus ", has asked the city not long ago.It mainly is made up of inner bag that holds medicinal liquid and the pressue device of bottle and Qi Nei.Pressue device comprises that sliding roof, elasticity returns power element, pull bar and locking member.Elasticity is returned after the power compression element its elasticity and is returned and try hard to recommend moving affixed with it sliding roof, and the inner bag that sliding roof is oppressed on it extrudes medicinal liquid wherein.
The defective of this kind low-order travenol infuser is that it is a spring or compressing rubber that elasticity is returned the power element, and in the bigger incipient stage of decrement, the elastic force of its release is bigger, and internal cholic pressure is just bigger; In whole infusion process, along with elasticity is returned the stretching, extension of power element, its restoring force reduces gradually, and internal cholic pressure just descends gradually.Particularly the amount of liquid medicine in inner bag is bigger, or when needing slowly to infuse for a long time, for the elasticity that makes pressue device is returned power element energy slow release elastic force, force value that again can be in guarantor unit's time simultaneously, have to adopt length or the bigger spring of diameter, make the volume of low-order travenol infuser increase like this.And the uneven problem of infusion process pressure is still and can not thoroughly solves.
(3) summary of the invention
The purpose of this invention is to provide little, portable low-level uniform pressure infusion set of a kind of volume and using method, uniform pressure can be provided in infusion process.
The low-level uniform pressure infusion set of the present invention's design comprises cylinder bottle, intravital compressible inner bag and the pressue device that holds medicinal liquid of bottle that has bottleneck, and interior cholic outlet and bottleneck join, and pressue device is positioned at bottle, inner bag below.Pressue device comprises that sliding roof, elasticity returns power element, pull bar and locking member.The end face of sliding roof is positioned at the inner bag bottom, and the pull bar top is connected with sliding roof, the fixedly connected locking part in bottom.Also have base, quill, described elasticity is returned the power element and is comprised one-level spring, two-level spring and three grades of springs.
Described bottle is the cylinder of lower openings, and the top is a bottleneck, the bottle body bottom mounting seat, and base comprises the seat body of tubular and the bottom surface that is tightly connected with it, there is centre bore the bottom surface.The external diameter of seat body is slightly smaller than the bottle internal diameter, and there is bulge loop bottle inwall lower end, and seat body outer wall has the annular groove that cooperates with it, and when seat body insertion bottle, the bulge loop of bottle inwall embeds in the annular groove of base body outer wall, the two connection.Also be fixed with position-limiting drum and spring retaining sleeve with the concentricity axle of seat body on the bottom surface of seat in the body, position-limiting drum is in innermost layer, and position-limiting drum is identical with the spring retaining sleeve height.There are 3～6 limited impressions under oblique position-limiting drum inwall upper end, and the bottom of limited impression is level or stop-return slot obliquely.The outer wall of spring retaining sleeve has the locating piece of 3～6 projectioies.
Quill upper end T-Ring shape upper head plate, the upper head plate internal diameter equates that with the quill internal diameter external diameter is slightly smaller than the position-limiting drum internal diameter; Quill lower end T-Ring shape bottom plate, the bottom plate external diameter equates that with the quill internal diameter internal diameter is a bit larger tham the pull bar diameter, end plate is vertical with the quill centrage up and down.Quill upper head plate outer rim has 3～6 spacing double wedges that match with the limited impression of position-limiting drum inwall, when quill is packed position-limiting drum into, its spacing double wedge embeds in the limited impression of position-limiting drum inwall, quill moves down while rotating, with the rotation of quill, its spacing double wedge snaps in the stop-return slot of limited impression bottom.Along connecing concentric with it inner core, the inner core internal diameter is greater than the pull bar external diameter in the quill bottom plate, and external diameter is less than three grades of spring inside diameters, and it highly is 2/3 to 1/2 of a quill height.2～4 inner core double wedges that this inner core upper limb has.
Piston is inverted drum, and end face is positioned at the inner bag below, external diameter is slightly smaller than the bottle internal diameter, and matches with the inner bag bottom surface.The ladle body internal diameter is a bit larger tham the spring retaining sleeve external diameter, but less than the external diameter of spring retaining sleeve outer wall locating piece.Piston ladle body lower edge has 3～6 draw-in grooves that match with spring retaining sleeve outer wall locating piece.When piston was buckled on the spring retaining sleeve of base, the draw-in groove inlay card of piston ladle body lower edge determined the total height of piston and base in the locating piece of spring retaining sleeve, and the bottle spatial altitude of piston top is the height after inner bag is full of medicinal liquid.There are 2～4 screens blocks piston ladle body inwall below.
The major diameter of sliding roof is slightly smaller than piston ladle body internal diameter, and the major diameter outer rim has 2～4 screens teeth that match with the screens block of piston ladle body inwall.Connect guide under the sliding roof bottom centre, the guide external diameter is less than three grades of spring inside diameters, and it highly is 1/3 to 1/2 of a quill height.Its endoporus is the screw that cooperates with pull rod screw, and pull bar screws in the guide and is connected with sliding roof.Sliding roof guide root edge has 2～4 guide double wedges that match with the inner core double wedge of quill.When sliding roof is pressed on the quill upper head plate, the guide double wedge of sliding roof and the inner core double wedge of quill are meshing with each other.
The screw rod of pull bar for matching with sliding roof guide screw, pull bar length equals base end face to the distance between the piston-top surface that is installed on the base spring retaining sleeve.The centre bore of quill and base end face is passed in the pull bar lower end, and locking member is positioned at the below, bottom surface.For the ease of rotating tension bar, the locking member of its bottom is the butterfly locking member.
Described elasticity is returned the power element and is comprised that 3 is the different cylindrical helical spring of diameter at center with the pull bar.Between spring retaining sleeve and position-limiting drum, the lower end is butted on the bottom surface of base at the one-level spring of outermost diameter maximum, and upper end and sliding roof join; Two-level spring is between position-limiting drum and quill, and its lower end is butted on the bottom surface of base, and the upper end is butted on the upper head plate of quill; Three grades of spring housings are positioned at quill outside pull bar, its lower end is butted on the bottom plate of quill, and the upper end is butted on sliding roof.
For the ease of fixing of spring, there is locating slot the sliding roof outer, and one-level spring upper end inlay card is connected with sliding roof in this locating slot.Three grades of spring upper ends are placed in outside the guide, are connected with guide.The guide outer wall also can be evenly equipped with 3～8 outstanding blend stops parallel with the pull bar center, and the blend stop outer circumference diameter equates that with three grades of spring inside diameters three grades of spring upper end lock rings are connected with guide outside the blend stop of guide.
Quill upper head plate outer is folding down, forms the annular slot that Open Side Down, and the two-level spring upper end inserts in the annular slot, be butted on the quill upper head plate.
In order to protect locking member, also in order to make this transfusion device uprightly steady, the seat body of base extends downwards from the bottom surface, and the length of extension is a bit larger tham the length of pull bar bottom locking member.
The using method of low-level uniform pressure infusion set of the present invention is as follows:
I, assembling
Inner bag is packed in the bottle, and the bottleneck of interior cholic opening and bottle is affixed, after the inner bag liquid drug, and cholic opening and bottleneck in the sealing.
Put into two-level spring in the position-limiting drum of base, quill is pressed on the two-level spring, quill enters in the position-limiting drum in rotation, compress two-level spring simultaneously, the spacing double wedge of quill upper head plate outer rim moves down along the limited impression of position-limiting drum inwall, snap in the stop-return slot with the rotation of quill, spacing double wedge, two-level spring is compressed between the upper head plate of the bottom surface of base and quill.After this one-level spring upper end is connected with sliding roof, three grades of spring upper end cuffs are outside the sliding roof guide again.Three grades of spring lower ends are put into quill, are enclosed within outside the inner core, one-level spring lower end is put between spring retaining sleeve and the position-limiting drum, the pull bar that the bottom connects locking member is screwed in the screw of sliding roof guide by the insertion of base below, its top, piston is buckled on the base, and the draw-in groove inlay card of piston ladle body lower edge is in the locating piece of spring retaining sleeve.Base and spring thereof, sliding roof, quill and piston insert bottle from the bottom together, and the two connection, the assembling of this transfusion device finish, to be used.
At this moment, sliding roof is in the top of pull bar, close piston-top surface, and the locking member of pull bar tail end is near base end face, and one, three grade of spring is in extended configuration, and two-level spring is in compressive state.
There is locating slot the sliding roof outer, and one-level spring upper end inlay card is connected with sliding roof in this locating slot.
Quill upper head plate outer is folding down, forms the annular slot that Open Side Down, and the two-level spring upper end inserts in the annular slot, be butted on the quill upper head plate.
II, transfusion are used
The liquid plug of getting of tube for transfusion inserts inner bag from the bottleneck of transfusion device, pull bar pulls down, rotates simultaneously, its vertical sliding roof presses down one, three grade of spring, screens block to the screens tooth seized piston ladle body inwall of sliding roof outer rim, the guide double wedge of sliding roof guide and the inner core double wedge of quill inner core are meshing with each other simultaneously, sliding roof drives quill and rotates, and the spacing double wedge of quill upper head plate outer rim leaves the stop-return slot of position-limiting drum, is in the limited impression bottom.Sliding roof is limited can not to rotate again, continues the turn pull bar, and sliding roof compresses three springs fully, and the pull bar upper end screws out from sliding roof, to pushing up piston-top surface.Continuing firmly, the rotation lock part makes it to come off from pull bar.
The pull bar tail end does not have resistance, and three springs stretch simultaneously, and elastic force upwards promotes movable panel and pull bar, and the pull bar top heads on piston-top surface and makes it to move, piston compressing inner bag, and elastic force steadily is delivered to the inner bag bottom equably.Because of the spacing double wedge of the upper head plate of quill embeds in the limited impression of position-limiting drum inwall, the spacing double wedge that promotes quill when two-level spring stretches slides upwards along limited impression, the stretching, extension of two-level spring is later than one or three grades of springs, when one or three grades of spring power descend, quill just breaks away from position-limiting drum, and two-level spring makes piston steadily even in infusion process to the pressure of inner bag unit interval with the elastic force of one or three grades of springs.
The advantage of low-level uniform pressure infusion set of the present invention and using method is: 1, its pressue device has three grades of springs, and evenly release pressure guarantees constant pressure in whole infusion process; 2, be specially adapted to jumbo transfusion device or the long time intersexuality is slowly infused; 3, three grades of springs provide the pressure of lasting stability in limited space, have reduced the volume of this transfusion device.
(4) description of drawings
Fig. 1 is the structural representation after this low-level uniform pressure infusion set embodiment assembling is finished;
Fig. 2 is a Bottle structure sketch map among Fig. 1;
Fig. 3 is an inner-tube structure sketch map among Fig. 1;
Fig. 4 is a quill structural representation among Fig. 1;
Fig. 5 is a base vertical section sketch map among Fig. 1;
Fig. 6 is a base perspective view among Fig. 1;
Fig. 7 is a sliding roof plan structure sketch map among Fig. 1;
Fig. 8 be among Fig. 7 A-A to generalized section;
Fig. 9 is a Tiebar structure sketch map among Fig. 1;
Figure 10 is a piston cross-sectional view among Fig. 1;
Figure 11 is a piston perspective view among Fig. 1;
Figure 12 uses each spring of initial stage to be in the structural representation of compressive state for this low-level uniform pressure infusion set embodiment.
Number in the figure is:
1, bottle, 11, bottleneck, 2, inner bag, 3, piston, 31, ladle body, 311, draw-in groove, 312, locating piece, 32, end face, 4, sliding roof, 41, screens tooth, 42, guide, 421, the guide double wedge, 5, pull bar, 51, locking member, 6, three grades of springs, 7, quill, 71, inner core, 711, the inner core double wedge, 72, upper head plate, 721, spacing double wedge, 8, two-level spring, 9, one-level spring, 10, base, 101, the bottom surface, 102, seat body, 103, spring retaining sleeve, 1031, locating piece, 104, position-limiting drum, 1041, limited impression.
(5) specific embodiment
This low-level uniform pressure infusion set embodiment comprises the cylinder bottle 1 that has bottleneck, the compressible inner bag 2 and the pressue device of the held medicinal liquid in the bottle 1 as shown in Figure 1, and the outlet of inner bag 2 and bottleneck 11 join, and pressue device is positioned at bottle 1, inner bag 2 belows.Pressue device comprises that sliding roof 4, elasticity returns power element, pull bar 5 and locking member 51.The end face of sliding roof 4 is positioned at inner bag 2 bottoms, and pull bar 5 tops are connected with sliding roof 4, the fixedly connected butterfly locking member 51 in bottom.
As shown in Figure 2, described bottle 1 is the cylinder of lower openings, and the top is a bottleneck 11.
As shown in Figure 4, quill 7 upper end T-Ring shape upper head plates 72, upper head plate 72 internal diameters equate that with quill 7 internal diameters external diameter is slightly smaller than position-limiting drum 104 internal diameters; Quill 7 upper head plates 72 outers are folding down; Form the annular slot that Open Side Down.Quill 7 lower end T-Ring shape bottom plates, the bottom plate external diameter equates that with quill 7 internal diameters internal diameter is a bit larger tham pull bar 5 diameters, end plate is vertical with quill 7 centrages up and down.Quill 7 upper head plates 72 outer rims have 4 spacing double wedges 721 that match with the limited impression 1041 of position-limiting drum 104 inwalls, when quill 7 is packed position-limiting drum 104 into, its spacing double wedge 721 embeds in the limited impression 1041 of position-limiting drum 104 inwalls, quill 7 moves down while rotating, with the rotation of quill 7, its spacing double wedge 721 snaps in the stop-return slot of limited impression 1041 bottoms.Along connecing concentric with it inner core 71, less than three grades of spring 6 internal diameters, it highly is 2/3 to 1/2 of quill 7 height to inner core 71 internal diameters greater than pull bar 5 external diameters, external diameter in quill 7 bottom plates.2 inner core double wedges 711 that these inner core 71 upper limbs have.
Shown in Figure 10 and 11, piston 3 is inverted drum, and end face 32 is positioned at inner bag 2 belows, matches with the inner bag bottom surface, and end face 32 external diameters are slightly smaller than bottle 1 internal diameter.Ladle body 31 internal diameters are a bit larger tham spring retaining sleeve 103 external diameters, but less than the external diameter of spring retaining sleeve 103 outer wall locating pieces 1031.Piston 3 ladle bodies 31 lower edges have 4 draw-in grooves that match with spring retaining sleeve 103 outer wall locating pieces 1031.When piston 3 is buckled on the spring retaining sleeve 103 of base 10, draw-in groove 31 1 inlay cards of piston 3 ladle bodies 31 lower edges are in the locating piece 1031 of spring retaining sleeve 103, make the piston 3 and the total height of base 10 determine that bottle 1 spatial altitude of piston 3 tops is the height after inner bag 2 is full of medicinal liquid.There are 2 screens blocks 312 piston 3 ladle bodies 31 inwalls below.
Shown in Fig. 7 and 8, the major diameter of sliding roof 4 is slightly smaller than piston 3 ladle bodies 31 internal diameters, and the major diameter outer rim has 2 screens teeth 41 that match with the screens block 312 of piston 3 ladle bodies 31 inwalls.Connect guide 42 under sliding roof 1 bottom centre, guide 42 external diameters are less than three grades of spring 6 internal diameters, and it highly is 1/3 to 1/2 of quill 7 height, and its endoporus is and the screw of pull bar 5 threaded engagement that pull bar 5 screws in the guide 42 and is connected with sliding roof 4.Sliding roof 4 guides 42 root edges have 2 guide double wedges 421 that match with the inner core double wedge 711 of quill 7.When sliding roof 4 is pressed on quill 7 upper head plates 72, the guide double wedge 421 of sliding roof 4 is meshing with each other with the inner core double wedge 711 of quill 7.Guide 42 outer walls are evenly equipped with 6 outstanding blend stops parallel with the pull bar center, and the blend stop outer circumference diameter equates with three grades of spring 6 internal diameters.There is locating slot 43 sliding roof 4 outers.
As shown in Figure 9, the screw rod of pull bar 5 for matching with sliding roof 4 guides 42 screws, pull bar 5 length equal base 10 bottom surfaces 101 to the distance between piston 3 end faces 32 that are installed on base 10 spring retaining sleeves 103.The centre bore of quill 7 and base 10 bottom surfaces 101 is passed in pull bar 5 lower ends, and locking member 51 is positioned at 10 belows, bottom surface.
Shown in Fig. 1,12, described elasticity is returned the power element and is comprised that 3 is the different cylindrical helical spring of diameter at center with pull bar 5.Between spring retaining sleeve 103 and position-limiting drum 104, the lower end is butted on the bottom surface 101 of base 10 at the one-level spring 9 of outermost diameter maximum, and the upper end inlay card is in the locating slot 43 of sliding roof 4 outers; Two-level spring 8 is between position-limiting drum 104 and quill 7, and its lower end is butted on the bottom surface 101 of base 10, and the upper end inserts in the annular groove of 72 times foldings of upper head plate of quill 7, be butted on upper head plate 72; Three grades of springs 6 are enclosed within outside the pull bar 5, are positioned at outside the inner core 71 of quill 7, and three grades of spring lower ends are butted on the bottom plate of quill 4, and the upper end lock ring is connected with sliding roof 4 outside the blend stop of guide 42.
For base firmly is connected with bottle, also design has the insurance snap ring, the insurance snap ring is the annular cover, its internal diameter equates with bottle 1 external diameter, bottle 1 lower end outer wall has annular groove, and 10 bodies 102 of base have bulge loop, and the inwall of insurance snap ring has corresponding bulge loop and annular groove, after base 10 inserted bottle 1, insurance card was located on the joint portion of base 10 and bottle 1.Bulge loop and the annular groove of insurance snap ring respectively with the bulge loop of the annular groove of bottle 1, base 10 inlay card mutually, base 10 firmly is connected with bottle 1.
For the safety that guarantees to infuse under motion conditions, the bottleneck of this transfusion device has the bottleneck holder, and the draw-in groove that the liquid plug cooperates of getting with tube for transfusion is arranged on it, and after getting the liquid plug and snapping in the bottleneck holder, the bottleneck holder is enclosed within on the bottleneck, comes off to avoid plug.The buckle of being furnished with transfusion speed regulator in addition, buckle matches with the shell of speed regulator, after the transfusion speed adjustment suitably, loads onto and loads onto buckle on the speed regulator, and regulating wheel no longer rotates, and transfusion speed is constant.
This medical low-level uniform pressure infusion set also is equipped with link for being convenient to the location in all cases on bottle, link is the annular cover, its internal diameter equates that with the bottle external diameter link is placed in outside the bottle, and 1 flexible collar is arranged on it, and/or 1～2 hook, and/or 1～3 suspension ring.Flexible collar is used for fixing the drop bottle on the tube for transfusion, and hook can be used for this transfusion device is hung over belt or other place, hangs button and can be used for colluding this transfusion device of rope suspension.
The using method of low-level uniform pressure infusion set is as follows in the last example:
I, assembling
In this low-level uniform pressure infusion set when assembling,, inner bag 2 is packed in the bottle 1, and the bottleneck 11 of the opening of inner bag 2 and bottle 1 is affixed, after inner bag 2 liquid drug, seals the opening and the bottleneck 11 of inner bag 2.Link 12 is enclosed within on the bottle 1.
Put into two-level spring 8 in the position-limiting drum 104 of base 10, quill 7 is pressed on the two-level spring 8, the upper end of two-level spring 8 embeds in the annular connected in star of 72 times foldings of quill 7 upper head plates, quill 7 enters in rotating counterclockwise in the position-limiting drum 104, compress two-level spring 8 simultaneously, the spacing double wedge 721 of quill 7 upper head plates 72 outer rims moves down along the limited impression 1041 of position-limiting drum 104 inwalls, with rotating counterclockwise of quill 7, spacing double wedge 721 snaps in the stop-return slot, and two-level spring 8 is compressed between the upper head plate 72 of the bottom surface 101 of base 10 and quill 7.After this again with in the locating slot 43 of one-level spring 9 upper end inlay cards on sliding roof 4, three grades of spring 6 upper end cuffs are outside sliding roof 4 guides 42.Three grades of spring 6 lower ends are put into quill 4 and are enclosed within outside the inner core 71, one-level spring 9 lower ends are put between spring retaining sleeve 103 and the position-limiting drum 104, the pull bar 5 that the bottom connects locking member 51 is screwed in the screw of sliding roof 4 guides 42 by the insertion of base 10 belows, its top, piston 3 is buckled on the base 10, and draw-in groove 311 inlay cards of piston 3 ladle bodies 31 lower edges are in the locating piece 1031 of spring retaining sleeve 103.Base 10 and spring thereof, sliding roof 4, quill 7 and piston 3 insert bottle 1 together from the bottom, the bulge loop of bottle 1 inwall embeds in the annular groove of 10 body 102 outer walls of base, the two connection.This transfusion device assembling finishes, to be used.
Be furnished with insurance during snap ring, then again insurance card be located on the joint portion of base 10 and bottle 1, the bulge loop of insurance snap ring and annular groove respectively with the bulge loop of the annular groove of bottle 1, base 10 inlay card mutually, base 10 firmly is connected with bottle 1.
This moment, sliding roof 4 was in the top of pull bar 5, near piston 3 end faces 32 as shown in Figure 1, and the locking member 51 of pull bar 5 tail ends is in extended configuration near base 10 bottom surfaces 101,, three grades of springs 9,6, and two-level spring 8 is in compressive state.
II, transfusion are used
The liquid of getting of tube for transfusion inserts inner bags 2 from the bottleneck 11 of transfusion device, pull bar 51 pulls down, rotates simultaneously, its vertical sliding roof 4 presses down one, three grade of spring 9,6, screens block 311 to screens tooth 43 seized pistons 3 ladle bodies 31 inwalls of sliding roof 4 outer rims, the guide double wedge 421 of sliding roof 4 guides 42 is meshing with each other with the inner core double wedge 71 1 of quill 7 inner cores 71 simultaneously, sliding roof 4 drives quill 7 and clockwise rotates, and the spacing double wedge 721 of quill 7 upper head plates 72 outer rims leaves the stop-return slot of position-limiting drum 104, is in limited impression 1041 bottoms.Sliding roof 4 limited can not rotations are again continued turn pull bar 4, and sliding roof 4 compresses three springs 6,8,9 fully, and pull bar 5 upper ends screw out from sliding roof 4, to pushing up piston 3 end faces 32.Continue locking member 51 is come off from pull bar 5, pull bar 5 tail ends do not have resistance, and three springs 6,8,9 stretch simultaneously, and this moment as shown in figure 12.Elastic force upwards promotes movable panel 4 and pull bar 5, and pull bar 5 tops head on piston 3 end faces 32 and make it to move, piston 3 compressing inner bags 2, and elastic force steadily is delivered to inner bag 3 bottoms equably.Because of the spacing double wedge 721 of the upper head plate 72 of quill 7 embeds in the limited impression 1041 of position-limiting drums 104 inwalls, two-level spring 8 promotes quill 7 when stretching spacing double wedge 721 slides upwards along limited impression 1041, the stretching, extension of two-level spring 8 is later than one or three grades of springs 9,6, when one or three grades of springs, 6,9 elastic forces descend, quill 7 just breaks away from position-limiting drum 104, and the elastic force of two-level spring 8 makes the pressure of 3 pairs of 2 unit interval of inner bag of piston steadily even in infusion process as a supplement.
The foregoing description is the specific case that purpose of the present invention, technical scheme and beneficial effect are further described only, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, being made, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (8)
1. low-level uniform pressure infusion set, comprise the cylinder bottle (1) that has bottleneck, the compressible inner bag (2) and the pressue device of the held medicinal liquid in the bottle (1), the outlet of inner bag (2) and bottleneck (11) join, and pressue device is positioned at bottle (1), inner bag (2) below; Pressue device comprises that sliding roof (4), elasticity returns power element, pull bar (5) and locking member (51); The end face of sliding roof (4) is positioned at inner bag (2) bottom, and pull bar (5) top is connected with sliding roof (4), the fixedly connected locking part in bottom (51); It is characterized in that:
Also have base (10), quill (7) and piston (3), described elasticity is returned the power element and is comprised one-level spring (9), two-level spring (8) and three grades of springs (6);
Described bottle (1) bottom mounting seat (10), base (10) comprises the seat body (102) of tubular and the bottom surface (101) that is tightly connected with it, there is centre bore bottom surface (101), the external diameter of seat body (102) is slightly smaller than bottle (1) internal diameter, also be fixed with position-limiting drum (104) and spring retaining sleeve (103) on the bottom surface (101) in the seat body (10) with the concentricity axle of seat body (102), position-limiting drum (104) is in innermost layer, and position-limiting drum (104) is highly identical with spring retaining sleeve (103); There are 3～6 limited impressions (1041) under oblique position-limiting drum (104) inwall upper end, and the bottom of limited impression (1041) is level or stop-return slot obliquely; The outer wall of spring retaining sleeve (103) has the locating piece (1031) of 3～6 projectioies;
Described quill (7) upper end connects annular upper head plate (72), and upper head plate (72) internal diameter equates that with quill (7) internal diameter external diameter is slightly smaller than position-limiting drum (104) internal diameter; Quill (7) lower end connects annular bottom plate, and the bottom plate external diameter equates that with quill (7) internal diameter internal diameter is a bit larger tham pull bar (5) diameter, and end plate is vertical with quill (7) centrage up and down; Quill (7) upper head plate (72) outer rim has 3～6 the spacing double wedges (721) that match with the limited impression (1041) of position-limiting drum (104) inwall, when quill (7) is packed position-limiting drum (104) into, its spacing double wedge (721) embeds in the limited impression (1041) of position-limiting drum (104) inwall, and its spacing double wedge (721) snaps in the stop-return slot of limited impression (1041) bottom during assembling; The edge connects concentric with it inner core (71) in quill (7) bottom plate, inner core (71) internal diameter greater than pull bar (5) external diameter, external diameter less than three grades of springs (6) internal diameter, it highly is 2/3 to 1/2 of quill (a 7) height, 2～4 inner core double wedges (711) that this inner core (71) upper limb has;
Described piston (3) is inverted drum, and end face (32) is positioned at inner bag (2) below, matches with inner bag (2) bottom surface, and end face (32) external diameter is slightly smaller than bottle (1) internal diameter; Ladle body (31) internal diameter is a bit larger tham spring retaining sleeve (103) external diameter, less than the external diameter of spring retaining sleeve (103) outer wall locating piece (1031); Piston (3) ladle body (31) lower edge has 3～6 draw-in grooves that match with spring retaining sleeve (103) outer wall locating piece (1031); When the spring retaining sleeve (103) that piston during assembling (3) is buckled in base (10) is gone up, draw-in groove (311) inlay card of piston (3) ladle body (31) lower edge is in the locating piece (1031) of spring retaining sleeve (103), and bottle (1) spatial altitude of piston (3) top is the height after inner bag (2) is full of medicinal liquid; There are 2～4 screens blocks (312) piston (3) ladle body (31) inwall below;
The major diameter of described sliding roof (4) is slightly smaller than piston (3) ladle body (31) internal diameter, and the major diameter outer rim has 2～4 the screens teeth (41) that match with the screens block (312) of piston (3) ladle body (31) inwall; Connect guide (42) under sliding roof (1) bottom centre, guide (42) external diameter is less than three grades of springs (6) internal diameter, and it highly is 1/3 to 1/2 of quill (a 7) height, and its endoporus is a screw, and pull bar (5) screws in the guide (42) and is connected with sliding roof (4); Sliding roof (4) guide (42) root edge has 2～4 the guide double wedges (421) that match with the inner core double wedge (711) of quill (7); When sliding roof (4) is pressed on quill (7) upper head plate (72), the guide double wedge (421) of sliding roof (4) is meshing with each other with the inner core double wedge (711) of quill (7);
The screw rod of described pull bar (5) for matching with sliding roof (4) guide (42) screw, pull bar (5) length equals base (10) bottom surface (101) to the distance between piston (3) end face (32) that is installed on base (10) spring retaining sleeve (103);
Described one-level spring (9) is positioned between spring retaining sleeve (103) and the position-limiting drum (104), and the lower end is butted on the bottom surface (101) of base (10), and the upper end links to each other with sliding roof (4); Two-level spring (8) is positioned between position-limiting drum (104) and the quill (7), and its lower end is butted on the bottom surface (101) of base (10), and the upper end is butted on the upper head plate (72) of quill (7); Three grades of springs (6) are enclosed within outside the pull bar (5), are positioned at outside the inner core (71) of quill (7), and three grades of spring lower ends are butted on the bottom plate of quill (4), and the upper end is connected with sliding roof (4).
2. low-level uniform pressure infusion set according to claim 1 is characterized in that:
There is locating slot (43) described sliding roof (4) outer, and one-level spring (9) upper end inlay card is in the locating slot (43) of sliding roof (4) outer.
3. low-level uniform pressure infusion set according to claim 1 is characterized in that:
Described quill (7) upper head plate (72) outer is folding down, forms the annular slot that Open Side Down; Two-level spring (8), upper end insert in the above-mentioned annular groove, be butted on upper head plate (72).
4. low-level uniform pressure infusion set according to claim 1 is characterized in that:
Guide (42) outer wall of described sliding roof (4) is evenly equipped with 3～8 outstanding blend stops parallel with pull bar (5) center, and the blend stop outer circumference diameter equates with three grades of springs (6) internal diameter; Three grades of springs (6) upper end lock ring is outside the blend stop of guide (42).
5. low-level uniform pressure infusion set according to claim 1 is characterized in that:
The locking member (51) of described pull bar (5) bottom is the butterfly locking member.
6. low-level uniform pressure infusion set according to claim 1 is characterized in that:
The seat body (102) of described base (10) is (101) extension downwards from the bottom surface, and the length of extension is a bit larger tham the length of pull bar (5) bottom locking member (51).
7. low-level uniform pressure infusion set according to claim 1 is characterized in that:
There is bulge loop described bottle (1) inwall lower end, and seat body (102) outer wall of base (10) has the annular groove that cooperates with it, and the bulge loop of bottle (1) inwall embeds in the annular groove of seat body (102) outer wall, the two connection.
8. according to the using method of each described low-level uniform pressure infusion set in the claim 1 to 7, it is characterized in that:
I, assembling
In this low-level uniform pressure infusion set when assembling,, inner bag (2) is packed in the bottle (1), and the bottleneck (11) of the opening of inner bag (2) and bottle (1) is affixed, after inner bag (2) liquid drug, seals the opening and the bottleneck (11) of inner bag (2);
Put into two-level spring (8) in the position-limiting drum (104) of base (10), quill (7) is pressed on the two-level spring (8), quill (7) enters in the position-limiting drum (104) in rotation, compress two-level spring (8) simultaneously, the spacing double wedge (721) of quill (7) upper head plate (72) outer rim moves down along the limited impression (1041) of position-limiting drum (104) inwall, snap in the stop-return slot with the rotation of quill 7, spacing double wedge (721), two-level spring (8) is compressed between the upper head plate (72) of the bottom surface (101) of base (10) and quill (7); After this again one-level spring (9) upper end is connected with sliding roof (4), three grades of springs (6) upper end cuff is outside sliding roof (4) guide (42), three grades of springs (6) lower end is put into quill (4), is enclosed within outside the inner core (71), one-level spring (9) lower end is put between spring retaining sleeve (103) and the position-limiting drum (104), and the pull bar (5) that the bottom connects locking member (51) is screwed in the screw of sliding roof (4) guide (42) by the insertion of base (10) below, its top; Piston (3) is buckled on the base (10), and draw-in groove (311) inlay card of piston (3) ladle body (31) lower edge is in the locating piece (1031) of spring retaining sleeve (103); Base (10) and three springs (6,8,9), sliding roof (4), quill (7) and piston (3) insert bottle (1), the two connection together from the bottom;
II, transfusion are used
The liquid plug of getting of tube for transfusion inserts inner bag (2) from the bottleneck (11) of transfusion device, pull bar (51) pulls down, rotate simultaneously, its vertical sliding roof (4) presses down one, three grades of springs (9,6), screens block (311) to screens tooth (43) seized piston (3) ladle body (31) inwall of sliding roof (4) outer rim, the guide double wedge (421) of sliding roof (4) guide (42) is meshing with each other with the inner core double wedge (711) of quill (7) inner core (71) simultaneously, sliding roof (4) drives quill (7) and rotates, and the spacing double wedge (721) of quill (7) upper head plate (72) outer rim leaves the stop-return slot of position-limiting drum (104), be in limited impression (1041) bottom; Sliding roof (4) is limited can not to rotate again, continues turn pull bar (4), and sliding roof (4) compresses three springs (6,8,9) fully, and pull bar (5) upper end screws out from sliding roof (4), to pushing up piston (3) end face (32); Continuing firmly, rotation lock part (51) makes it to come off from pull bar (5), three springs (6,8,9) stretch simultaneously, elastic force upwards promotes movable panel (4) and pull bar (5), pull bar (5) top heads on piston (3) end face (32) and makes it to move, piston (3) compressing inner bag (2), elastic force steadily is delivered to inner bag (2) bottom equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101146974A CN101745161B (en) | 2009-12-31 | 2009-12-31 | Medical low-level uniform pressure infusion set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101146974A CN101745161B (en) | 2009-12-31 | 2009-12-31 | Medical low-level uniform pressure infusion set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101745161A true CN101745161A (en) | 2010-06-23 |
| CN101745161B CN101745161B (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101146974A Expired - Fee Related CN101745161B (en) | 2009-12-31 | 2009-12-31 | Medical low-level uniform pressure infusion set |
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| Country | Link |
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| CN (1) | CN101745161B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103656788A (en) * | 2013-12-02 | 2014-03-26 | 江门大诚医疗器械有限公司 | Infusion device |
| WO2014082413A1 (en) * | 2012-11-30 | 2014-06-05 | 电白县康尔美生物科技有限公司 | Bladder-type automatic infusion apparatus |
| CN105190034A (en) * | 2013-03-15 | 2015-12-23 | 诺华股份有限公司 | Systems and methods for ocular surgery |
| CN108853649A (en) * | 2018-05-10 | 2018-11-23 | 周海英 | Medical nursing syringe |
| WO2023202650A1 (en) * | 2022-04-20 | 2023-10-26 | 常州赛乐医疗技术有限公司 | Hydraulic driving type anesthesia booster |
-
2009
- 2009-12-31 CN CN2009101146974A patent/CN101745161B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082413A1 (en) * | 2012-11-30 | 2014-06-05 | 电白县康尔美生物科技有限公司 | Bladder-type automatic infusion apparatus |
| CN105190034A (en) * | 2013-03-15 | 2015-12-23 | 诺华股份有限公司 | Systems and methods for ocular surgery |
| CN105190034B (en) * | 2013-03-15 | 2017-11-24 | 诺华股份有限公司 | System and method for ophthalmologic operation |
| CN103656788A (en) * | 2013-12-02 | 2014-03-26 | 江门大诚医疗器械有限公司 | Infusion device |
| CN103656788B (en) * | 2013-12-02 | 2015-09-30 | 江门大诚医疗器械有限公司 | A kind of infusion set |
| CN108853649A (en) * | 2018-05-10 | 2018-11-23 | 周海英 | Medical nursing syringe |
| WO2023202650A1 (en) * | 2022-04-20 | 2023-10-26 | 常州赛乐医疗技术有限公司 | Hydraulic driving type anesthesia booster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101745161B (en) | 2012-06-20 |
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