CN1810310A - Automatic control method for self-destructor of syringe, infusion set and hemostix - Google Patents
Automatic control method for self-destructor of syringe, infusion set and hemostix Download PDFInfo
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- CN1810310A CN1810310A CN 200510022314 CN200510022314A CN1810310A CN 1810310 A CN1810310 A CN 1810310A CN 200510022314 CN200510022314 CN 200510022314 CN 200510022314 A CN200510022314 A CN 200510022314A CN 1810310 A CN1810310 A CN 1810310A
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- 238000001802 infusion Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 27
- 230000009471 action Effects 0.000 claims abstract description 16
- 230000006378 damage Effects 0.000 abstract description 4
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- 239000007788 liquid Substances 0.000 description 13
- 239000008280 blood Substances 0.000 description 9
- 210000004369 blood Anatomy 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 238000010241 blood sampling Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000002427 irreversible effect Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 210000003462 vein Anatomy 0.000 description 5
- 206010011409 Cross infection Diseases 0.000 description 4
- 206010029803 Nosocomial infection Diseases 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 208000030507 AIDS Diseases 0.000 description 2
- 208000012266 Needlestick injury Diseases 0.000 description 2
- 230000006578 abscission Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000002906 medical waste Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 206010069803 Injury associated with device Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000003050 axon Anatomy 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
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Abstract
The automatic controlled self -destructor of syringe, infusion set and hemostix consists of hydraulic transmission part, spring seat, spring, puncture set and part for setting clinical hydraulic value and constraining force parameter. During the use of the syringe, infusion set and hemostix, the self -destructor has action state depending on the set clinical hydraulic value and the difference between the set clinical hydraulic value and the practical hydraulic value and completes self destruction automatically. In the same time, the self -destructor makes the needle seat of the syringe, the infusion set or the hemostix disintegrated automatically, the needle tip withdrawn automatically and the medium passage cut automatically. Therefore, the syringe, the infusion set and the hemostix with the self- destructor are automatic, reliable, convenient and safe.
Description
Technical field
The present invention relates to the autocontrol method of a class medical apparatus and instruments self-desttruction equipment, the autocontrol method of particularly a kind of syringe, infusion set and hemostix self-desttruction equipment.
Background technology
Modern medicine facts have proved, for avoiding to the mankind or animal input or cross infection takes place when taking out medium, syringe, transfusion device and hemostix should possess not re-usable function, can only be as garbage disposal after promptly using.For satisfying this requirement, some self-destruction syringes, transfusion device and hemostix are come out one after another.
Realize the mode of self-destroying function from existing self-destruction syringe, can be divided into two classes generally: a class is " core bar automatic braking formula " syringe, its core bar changes self structure in progradation, can not retract again, also makes core bar or syringe forfeiture original function even retract; Another kind of is " manual breakage formula " syringe, and its self-destruction and the dependence of needle tip retracts function manually interact its end assembly and needle stand or outer jacket member at core bar progradation latter end and realizes.The defective of " core bar automatic braking formula " syringe is: scrap syringe needle after the syringe self-destruction and reside in the outside, utmost point meaning causes the accidental needle sticks injury and infects, though thereby this class self-destruction syringe has been eliminated reusable drawback, but fail to eliminate the harm of needle stick injury and cross infection in the medical waste processing procedure, rely on spryinge destroying device at present and manually ruin the pin operation and come passive addressing this problem.The defective of " manual breakage formula " syringe is: if the operator deliberately stops injection at core bar progradation latter end, core bar end assembly is not interacted with needle stand or outer jacket member, self-destroying function just can not be realized, needle point can not bounce back, the operator can be with syringe suction medicinal liquid again, carry out the above injection of secondary, stayed the chance of reusing syringe objectively for intentional repeated use person, particularly IDU person.
Realize the mode of self-destroying function from existing self-destruction type infusion device, two common defects of main existence: the one, its self-destroying function must could be realized by manually-operated, promptly by manually-operated blocking-up transfusion path, transfusion device can not be re-used, this defective not only makes the medical worker will pay more the operation bidirectional that destroys the necessary structure of transfusion device, and stayed reusable chance objectively for intentional repeated use person, can not fundamentally stop the reusable phenomenon of transfusion device; The 2nd, these self-destruction type infusion devices mainly concentrate on bottle plug puncture unit and adjacent regions thereof to the improvement of common infusion fluid device, and are transfusion device pin portions because of repeated use causes the key position of cross infection disease really.
Though indivedual technical schemes of existing vein tubular type hemostix have the self-destruction design, with " core bar automatic braking formula " syringe same defect are arranged; And vein pocket type hemostix does not still have any self-destruction design so far, and reusable is exactly its greatest drawback.
Why above-mentioned self-destruction syringe, transfusion device and hemostix exist described defective, and a major reason is exactly that its self-desttruction equipment lacks a kind of autocontrol method.At present, China has entered the infection high-incidence season of infectious diseases such as acquired immune deficiency syndrome (AIDS), country has taked the corresponding management system to circulation of related medical apparatus and use, if but a kind of autocontrol method is arranged, can make the medium channel blocking-up process of syringe, tubular type hemostix needle tip retracts and self-destruction process and transfusion device, pocket type hemostix, do not rely on manually-operated and realization automatically, effective fit system means, fundamentally eliminate the reusable hidden danger of this type of medical apparatus and instruments, better satisfy the needs and the requirement of the clinical use of modern medicine.
Summary of the invention
The object of the present invention is to provide the autocontrol method of a kind of syringe, transfusion device and hemostix self-desttruction equipment, make the operating state of syringe, transfusion device and hemostix self-desttruction equipment depend on dynamically poor that actual hydraulic pressure is put in the setting of critical hydraulic pressure value and set critical hydraulic pressure value and the use, thereby make the self-destruction process of syringe, transfusion device and hemostix not rely on manually-operated and finish automatically.For achieving the above object, the present invention has adopted following technical scheme:
The autocontrol method of a kind of syringe, infusion set and hemostix self-desttruction equipment is characterized in that: a hydraulic drive part is set in the internal hydraulic pressure sphere of action of described syringe, infusion set and hemostix; Described hydraulic drive part one end is the hydraulic pressure stress surface, and the other end is big or small two curve slopes; One spring base is set on the axis of described hydraulic drive part; Described spring base inner chamber has spring and puncture body and circle symmetry to buckle arm; Round axis of symmetry vertical plane and inclined-plane are arranged on the described puncture body; On the described button arm buckle teeth and contact are arranged; Described buckle teeth is buckled on the described axle vertical plane; Described spring is subjected to described puncture body constraint to be in the elastic deformation state; In the excursion of described syringe, infusion set and hemostix internal hydraulic pressure, set a critical hydraulic pressure value, make the elastic force of described spring, described buckle teeth and the frictional resistance (containing the deformation recovery power of buckleing arm) of described axle vertical plane and the axial angle of described little curve slope, satisfy by the long-pending concurrent force equilibrium equation that constitutes with described spring force of described critical hydraulic pressure value with described hydraulic pressure stress surface area; In described scope, set another critical hydraulic pressure value, make the axial angle on the elastic force of described spring, described inclined-plane and the axial angle of described big curve slope, satisfy by the long-pending concurrent force equilibrium equation that constitutes with described spring force of described another critical hydraulic pressure value with described hydraulic pressure stress surface area.
Above-mentioned critical hydraulic pressure value is 2000Pa-10000Pa.
In the use of syringe, infusion set and hemostix, when medium during in intrinsic pressure effect current downflow, medium, promotes the hydraulic drive part and moves vertically in the hydraulic drive part with equal pressure action.Because medium pressure is greater than setting critical hydraulic pressure, and the associated components parameter satisfies the concurrent force equilibrium equation, and the little curve slope of hydraulic drive part can insert from contact is inboard, makes buckle teeth overcome frictional resistance and moves to the inclined-plane from the axle vertical plane.Spring force is converted into the vertical elastic force of axle and acts on buckle teeth through the inclined-plane, act on the big curve slope of hydraulic drive part through contact again, big curve slope is converted into axial critical active force (critical hydraulic pressure value is long-pending with hydraulic action face area) with the vertical elastic force of axle and acts on medium through the hydraulic action face.Because set critical hydraulic pressure less than medium pressure this moment, and the associated components parameter satisfies the concurrent force equilibrium equation, spring force can not make the hydraulic drive part move, and buckle teeth stays in the initial position on inclined-plane.When finishing using, when medium stops to flow, its fluid pressure drop is to setting below the critical hydraulic pressure, the concurrent force disequilibrium, the hydraulic drive part is promoted by spring force, and contact loses big curve slope constraint, buckle teeth is shifted to terminal point from the inclined-plane initial position, puncture body is thorn abscission ring shape thin-walled under spring force promotes, and makes the necessary structure of syringe, transfusion device and hemostix that irreversible change take place, i.e. automatic disintegration of syringe and tubular type hemostix needle stand and overcoat and needle point bounce back automatically; Transfusion device and pocket type hemostix medium channel are blocked automatically.
The present invention adopts above technical scheme, realized the automatic control of syringe, transfusion device and hemostix self-desttruction equipment, make whole self-destruction process not rely on manually-operated and independently finish, both avoided medical worker's operation bidirectional, intentional repeated use person is had no exploits; Syringe and tubular type hemostix needle point bounce back automatically, have eliminated the harm of needle stick injury and cross infection in the medical waste processing procedure, need not carry out the extra pin operation of manually ruining by spryinge destroying device.This shows, self-destruction syringe, transfusion device and hemostix under the present invention supports, scheme has had the new function of comprehensive automation compared to prior art, and its practicality, stability and safety are all greatly improved, and can satisfy the needs and the requirement of the clinical use of modern medicine better.
Description of drawings
The stereochemical structure assembled sectional view of Fig. 1, implementation of the present invention 1,4.
The stereochemical structure exploded view of Fig. 2, implementation of the present invention 1,4.
Fig. 3, implementation of the present invention 1,4 overcoat needle stand siamese parts and the stereochemical structure cutaway view that matches with the hydraulic drive part thereof.
The stereochemical structure cutaway view of Fig. 4, implementation of the present invention 1,3,4 spring bases.
The perspective view of Fig. 5, implementation of the present invention 1,4 hydraulic drive parts.
The perspective view of Fig. 6, implementation of the present invention 1,3,4 puncture body.
The stereochemical structure cutaway view of Fig. 7, implementation of the present invention 1,3,4 puncture body.
The stereochemical structure cutaway view of Fig. 8, implementation of the present invention 1,4 needle stands and overcoat disintegration and needle tip retracts.
The perspective view of Fig. 9, implementation of the present invention 2.
The stereochemical structure exploded view of Figure 10, implementation of the present invention 2.
The stereochemical structure assembled sectional view of Figure 11, implementation of the present invention 2.
The perspective view of Figure 12, implementation of the present invention 2 spring bases.
The stereochemical structure cutaway view of Figure 13, implementation of the present invention 2 spring bases.
The perspective view of Figure 14, implementation of the present invention 2 puncture body.
The stereochemical structure cutaway view of Figure 15, implementation of the present invention 2 puncture body.
The perspective view of Figure 16, implementation of the present invention 2,3 hydraulic drive parts.
The stereochemical structure cutaway view of Figure 17, implementation of the present invention 2,3 hydraulic drive parts.
The perspective view of Figure 18,2,3 communicating pipes of implementation of the present invention.
The stereochemical structure cutaway view of Figure 19,2,3 communicating pipes of implementation of the present invention.
The stereochemical structure cutaway view of Figure 20, implementation of the present invention 2 transfusion path blocking-up.
The perspective view of Figure 21, implementation of the present invention 3.
The stereochemical structure exploded view of Figure 22, implementation of the present invention 3.
The stereochemical structure assembled sectional view of Figure 23, implementation of the present invention 3.
The stereochemical structure cutaway view of Figure 24, implementation of the present invention 3 blood sampling path blocking-up.
The specific embodiment
1, the autocontrol method of syringe needle point retraction and needle stand and overcoat recycling plant
Shown in Fig. 1 to 8, the invention provides the autocontrol method of a kind of syringe needle point retraction and needle stand and overcoat recycling plant, form by the concurrent force equilibrium equation of spring base 1, spring 2, puncture body 3, needle point 4, overcoat needle stand siamese part 5, hydraulic drive part 6, piston 7, core bar 8, the critical hydraulic pressure value of setting and constraint parameters of operating part.
Overcoat needle stand siamese part 5 is made of needle stand 51, annular thin wall 52, internal ring 53, the symmetrical support 54 of circle and overcoat 55.There is the pin hole 511 that communicates with needle point 4 needle stand 51 inside, and its periphery has boss 512.Annular thin wall 52 wall thickness are 0.1mm-0.3mm.Internal ring 53 tail ends have lobe 531.Overcoat 55 inner chambers have halfpace 552, its front end periphery fluted 551.
Overcoat needle stand siamese part 5 inner chambers are provided with hydraulic drive part 6.Hydraulic drive part 6 one ends are the symmetrical curve slope 61,62 of circle, and there is the non-return portion 63 that matches with overcoat internal ring 53 front ends its inboard; The other end is a hydraulic pressure stress surface 64, and its inside and outside disc has seal groove 66 and 65, becomes sealed sliding movingly with outer casing inner wall 553 with internal ring 53 outer walls, and its slip is subjected to support 54 and internal ring 53 ends restrict.Add lubricant during the location, the frictional force of itself and outer casing inner wall can be ignored.
Establish a spring base 1 on the axis of hydraulic drive part 6.Spring base 1 inner chamber front end has annular lip 11, and there is circle symmetry button arm 12 at the middle part, and there is the flange 131 with 551 one-tenth concavo-convex snap-in structures of overcoat end recesses outer shroud 13 inner chamber ends, both engagings of back, location.Air channel 111 is arranged on the annular lip 11.On the button arm 12 buckle teeth 121 and contact 122 are arranged.
Set a critical hydraulic pressure value, make the frictional resistance (containing the deformation recovery power of buckle arm 12) of 31 of the elastic force, buckle teeth 121 of spring 2 and axle vertical planes and the axial angle of curve slope 61, satisfy by set critical hydraulic pressure value amassing and concurrent force equilibrium equation that spring 2 elastic force constitute with hydraulic pressure stress surface 64 areas.Set another critical hydraulic pressure value, make the elastic force of spring 2, the axial angle on inclined-plane 32 and the axial angle of curve slope 62, satisfy by the long-pending concurrent force equilibrium equation that constitutes with spring 2 elastic force of set another critical hydraulic pressure value with hydraulic pressure stress surface 64 areas.
Above-mentioned critical hydraulic pressure value is 5000Pa-10000Pa.
Above-mentioned spring base 1, puncture body 3, overcoat needle stand siamese part 5, hydraulic drive part 6 and core bar 8 are one-body molded respectively.
When pulling core bar 8 extracts medicinal liquids, hydraulic drive part 6 under suction function to one section setpoint distance of piston 7 displacements; When promoting core bar 8 aerofluxuss, hydraulic drive part 6 reverse displacement same distance under positive pressure forms the pressure at expulsion buffering, avoids being pressed in the overcoat 55 moment to reach critical hydraulic pressure strength.Therebetween, the air in the spring base 1 can be through air channel 111 turnover, and the displacement of hydraulic drive part 6 pressure drag of not being bullied is hindered.
During injection, promote core bar 8 and make medicinal liquid inject human body from needle point, medicinal liquid in hydraulic drive part 6, moves it with equal pressure action vertically.Because medicinal liquid pressure is greater than setting critical hydraulic pressure, and the associated components parameter satisfies the concurrent force equilibrium equation, and curve slope 61 makes buckle teeth 121 overcome frictional resistance and moves to inclined-plane 32 from contact 122 inboard insertions.Spring 2 elastic force through the inclined-plane 32 be converted into the axle a vertical masterpiece be used for buckle teeth 121, act on curve slope 62 through contact 122 again, curve slope 62 is converted into axial critical active force (critical hydraulic pressure value is long-pending with hydraulic action face 64 areas) with the axle power of hanging down and acts on medicinal liquid through hydraulic action face 64.Because set critical hydraulic pressure less than actual hydraulic pressure this moment, and the associated components parameter satisfies the concurrent force equilibrium equation, spring 2 elastic force can not make hydraulic drive part 6 move, and buckle teeth 121 stays in the initial position on inclined-plane 32.Under the normal condition, when injection process closes on when finishing, core bar end retaining wall 81 is pressed to lobe 531, retaining wall 81 is broken from annular defect portion 811 places and falls into core bar 8 inner chambers.When medicinal liquid stops to flow, its fluid pressure drop is to setting below the critical hydraulic pressure, the concurrent force disequilibrium, hydraulic drive part 6 is promoted by spring 2 elastic force, contact 122 loses curve slope 62 constraints, and buckle teeth 121 is shifted to terminal point from the inclined-plane initial position, and puncture body 3 promotes bottom offset at spring 2 elastic force, its spine 33 thorn abscission ring shape thin-walleds 52, its halfpace 34 props up boss 512.At this moment, if retaining wall 81 does not break from annular defect portion 811 places, puncture body 3 will be pushed overcoat 55 inner chambers by spring 2 elastic force in the lump with needle stand 51; If retaining wall 81 breaks from annular defect portion 811 places, puncture body 3 will be pushed core bar 8 inner chambers by spring 2 elastic force in the lump with needle stand 51; In the inner chamber of the exposed parts of needle point 4 with needle stand 51 action withdrawal spring bases 1.So far, syringe is necessary that because of it is former structure irreversible change takes place can not re-use.
2, the autocontrol method of transfusion device transfusion path blocking vessel
Shown in Fig. 9 to 20, the invention provides a kind of autocontrol method of transfusion device transfusion path blocking vessel, form by the concurrent force equilibrium equation of sheath 1, needle point 2, needle stand 3, flexible pipe 4, automatic block device 5, flexible pipe 6, fluid strainer 7, flexible pipe 8, flow regulator 9, dropping funnel 10, dropper 11, bottle plug puncture unit 12, the critical hydraulic pressure value of setting and constraint parameters of operating part.
Automatically block device 5 was made up of spring base 51, spring 52, puncture body 53, hydraulic drive part 54 and communicating pipe 55.
Communicating pipe, body 551 inside were through hole 5511, and its periphery has boss 5512, and its tail end has plug 5513; It is circular that plug 5513 stress and deformations merge its end face of back; The initial part of plug 5513 is convexly equipped with two outer shrouds 552 and 553, forms annular cavity 555 and 556; The bottom of annular cavity 555 is an annular thin wall 554, and its wall thickness is 0.1mm-0.3mm; The end of outer shroud 553 is provided with groove 5531; 6 of annular cavity 556 and flexible pipes have through hole 5533.
Establish a hydraulic drive part 54 in the annular cavity 556, both become sealed sliding movingly.Hydraulic drive part 54 1 ends are hydraulic pressure stress surface 543, and the other end is the curve slope 541,542 of different axial angles, and the diameter of its inner chamber flange 544 equates with the external diameter of annular cavity 555.
Establish a spring base 51 on the axis of hydraulic drive part 54.Spring base 51 inner chamber front ends have annular lip 511, and there is the circle symmetry button arm 512 and 513 of easy deformation action at the inner chamber middle part, and there is the flange 5141 with 5531 one-tenth concavo-convex snap-in structures of groove outer shroud 514 ends.Air channel 5111 is arranged on the annular lip 511; On the button arm 512 buckle teeth 5121 and contact 5122 are arranged; On the button arm 513 buckle teeth 5131 and contact 5132 are arranged; Buckle teeth 5131 to the spacing of button arm 513 initial part less than the spacing of buckle teeth 5121 to button arm 512 initial part; Contact 5132 to the spacing of button arm 513 initial part greater than the spacing of contact 5122 to button arm 512 initial part.
Behind the location, buckle teeth 5131 is buckled on the vertical plane 532, and is corresponding with inclined-plane 533, and spring 52 is subjected to puncture body 53 constraints to be in compressive state; Body 551 front ends passed puncture body 53 and spring 52 and were adhesively fixed with flexible pipe 4 communicating pipe; Communicating pipe, inner annular recess 5531 engaged with spring base outer ring flange 5141; Communicating pipe outer shroud 553 tail ends and hose connection 61 be adhesively fixed; Communicating pipes 551 front end and flexible pipe 4 be adhesively fixed; From bottle plug puncture unit 12 to dropper 11, dropping funnel 10, flexible pipe 8, fluid strainer 7, flexible pipe 6, communicating pipe endoporus 5511, flexible pipe 4, needle stand 3 and needle point 2 constitute the transfusion paths, flexible pipe 8 runs through flow regulator 9.For ease of observing the aerofluxus situation, hose connection 61 is a transparent material.
Set a critical hydraulic pressure value, make the elastic force, buckle teeth 5121 and 5131 and the frictional resistance (containing the deformation recovery power of buckle arm 512,513) of 532 of axle vertical planes and the axial angle of curve slope 542 of spring 52, satisfy by set critical hydraulic pressure value amassing and concurrent force equilibrium equation that spring 52 elastic force constitute with hydraulic pressure stress surface 543 areas.Set another critical hydraulic pressure value, make elastic force, inclined- plane 533 and 534 the axial angle and the axial angle of curve slope 541 of spring 52, satisfy by the long-pending concurrent force equilibrium equation that constitutes with spring 52 elastic force of set another critical hydraulic pressure value with hydraulic pressure stress surface 543 areas.
Above-mentioned critical hydraulic pressure value is 2000Pa-6000Pa.
Above-mentioned spring base 51, puncture body 53, hydraulic drive part 54, communicating pipes 55 are distinguished one-body molded.
During use, discharge inner air tube earlier.When medicinal liquid when needle point 2 flows out, micro-medicinal liquid enters annular cavity 556 from through hole 5533 and promotes hydraulic drive parts 54 motion vertically.Because transfusion device pin portion hydraulic pressure is greater than setting critical hydraulic pressure during aerofluxus, and the associated components parameter satisfies the concurrent force equilibrium equation, curve slope 542 inserts from contact 5132 is inboard, and the frictional resistance that buckle teeth 5131 is overcome with axle vertical plane 532 moves to inclined-plane 533 from axle vertical plane 532.The elastic force of spring 52 533 acts on buckle teeth 5131 through the inclined-plane, act on curve slope 541 through contact 5132 again, annular slope 541 is converted into axial critical active force (critical hydraulic pressure value is long-pending with hydraulic action face 543 areas) with active force and acts on medicinal liquid through hydraulic action face 543.Because set critical hydraulic pressure less than transfusion device pin portion hydraulic pressure this moment, and the associated components parameter satisfies the concurrent force equilibrium equation, the elastic force of spring 52 can not make hydraulic drive part 54 move, and buckle teeth 5131 stays in the initial position on inclined-plane 533.When aerofluxus finishes, when adjustment flow regulator 9 makes medicinal liquid stop to flow, transfusion device pin portion hydraulic pressure disappears, the concurrent force disequilibrium, hydraulic drive part 54 is promoted by spring 52 elastic force, and contact 5132 loses curve slope 541 constraints, buckle teeth 5131 from the inclined-plane 533 initial positions shift to terminal point, puncture body 53 promotes lower edge axial displacement at spring 52 elastic force, and its vertical plane 532 is buckled on the buckle teeth 5121.
When opening flow regulator 9 and make medicinal liquid input human vein, micro-medicinal liquid enters annular cavity 556 from above-mentioned path again, promotes hydraulic drive part 54 motion vertically.Because when transfusion, transfusion device pin portion hydraulic pressure was greater than setting critical hydraulic pressure, and the associated components parameter satisfies the concurrent force equilibrium equation, and curve slope 542 is from contact 5122 inboard insertions, and buckle teeth 5121 overcomes frictional resistance and moves to inclined-plane 534 from puncture axon vertical plane 532.Elastic force transfer principle during with above-mentioned aerofluxus is identical, because set critical hydraulic pressure less than transfusion device pin portion hydraulic pressure this moment, and the associated components parameter satisfies the concurrent force equilibrium equation, and spring 52 elastic force can not make hydraulic drive part 54 move, and buckle teeth 5121 can only stay in the initial position on inclined-plane 534.When transfusion finishes, transfusion device pin portion fluid pressure drop is to setting critical hydraulic pressure when following, the concurrent force disequilibrium, hydraulic drive part 54 is promoted by spring 52 elastic force, contact 5122 loses curve slope 541 constraint, buckle teeth 5121 from the inclined-plane 534 initial positions shift to terminal point, puncture body 53 is in spring 52 elastic force effect lower edge axial displacements, its end spine 531 thorn disconnection siphunculus annular thin walls 554 make communicating pipe body 551 separate with outer shroud 552,553.Along with the displacement of puncture body 53, communicating pipe tail end plug 5513 stress and deformations merging, its end is absorbed in the puncture body inner chamber 536, with inner chamber 536 sealings; Simultaneously, puncture body inner chamber halfpace 535 props up communicating pipe body boss 5512.So far, transfusion device is necessary that because of the former of its pin portion adjacent regions structure irreversible change takes place can not re-use.
3, the autocontrol method of pocket type hemostix blood sampling path blocking vessel
Shown in Fig. 4,6,7 and 16 to 19 and 21 to 24, the invention provides a kind of autocontrol method of vein pocket type hemostix blood sampling path blocking vessel, form by the concurrent force equilibrium equation of sheath 4, needle point 5, flexible pipe 6, automatic block device 7, flexible pipe 8, appearance blood bag 9, the critical hydraulic pressure value of setting and constraint parameters of operating part.
Automatically block device 7 was made up of spring base 1, spring 2, puncture body 3, hydraulic drive part 54 and communicating pipe 55.
Communicating pipe, body 551 inside were through hole 5511, and its periphery has boss 5512, and its tail end has plug 5513; It is circular that plug 5513 stress and deformations merge its end face of back; The initial part of plug 5513 is convexly equipped with two outer shrouds 552 and 553, forms annular cavity 555 and 556; The bottom of annular cavity 555 is an annular thin wall 554, and its wall thickness is 0.1mm-0.3mm; The end of outer shroud 553 is provided with groove 5531; 6 of annular cavity 556 and flexible pipes have through hole 5533.
Establish a hydraulic drive part 54 in the annular cavity 556, both become sealed sliding movingly.Hydraulic drive part 54 1 ends are hydraulic pressure stress surface 543, and the other end is the curve slope 541,542 of different axial angles, and the diameter of its inner chamber flange 544 equates with the external diameter of annular cavity 555.
Establish a spring base 1 on the axis of hydraulic drive part 54.Spring base 1 inner chamber front end has annular lip 11, and there is circle symmetry button arm 12 at the middle part, and there is the flange 131 with 5531 one-tenth concavo-convex snap-in structures of communicating pipe groove outer shroud 13 inner chamber ends, both engagings of back, location.Air channel 111 is arranged on the annular lip 11; On the button arm 12 buckle teeth 121 and contact 122 are arranged.
Behind the location, buckle teeth 121 is buckled on the vertical plane 31, and spring 2 is subjected to puncture body 3 constraints to be in compressive state; Communicating pipe, body 551 front ends passed puncture body 3 and spring 2, were adhesively fixed with flexible pipe 8; Communicating pipe, inner annular recess 5531 engaged with spring base outer ring flange 131; Communicating pipe outer shroud 553 tail ends and hose connection 61 be adhesively fixed; Constitute the blood sampling paths from needle point 5 to flexible pipe 6, automatic block device 7, flexible pipe 8 and appearance blood bag 9.
Set a critical hydraulic pressure value, make the frictional resistance (containing the deformation recovery power of buckle arm 12) of 31 of the elastic force, buckle teeth 121 of spring 2 and axle vertical planes and the axial angle of curve slope 542, satisfy by set critical hydraulic pressure value amassing and concurrent force equilibrium equation that spring 2 elastic force constitute with hydraulic pressure stress surface 543 areas.Set another critical hydraulic pressure value, make the elastic force of spring 2, the axial angle on inclined-plane 32 and the axial angle of curve slope 541, satisfy by the long-pending concurrent force equilibrium equation that constitutes with spring 52 elastic force of set another critical hydraulic pressure value with hydraulic pressure stress surface 543 areas.
Above-mentioned critical hydraulic pressure value is 2000Pa-6000Pa.
Above-mentioned spring base 1, puncture body 3, hydraulic drive part 54, communicating pipes 55 are distinguished one-body molded.
When blood from needle point 2 when path flow into to hold blood bag 10, micro blood enters annular cavity 556 from through hole 5533 and promotes hydraulic drive parts 54 motion vertically.Because when blood sampling, path hydraulic pressure was greater than setting critical hydraulic pressure, and the associated components parameter satisfies the concurrent force equilibrium equation, and curve slope 542 is from contact 122 inboard insertions, and the frictional resistance that buckle teeth 121 is overcome with axle vertical plane 31 moves to inclined-plane 32 from axle vertical plane 31.The elastic force of spring 2 through the inclined-plane 32 be converted into the axle a vertical masterpiece be used for buckle teeth 121, act on curve slope 541 through contact 122 again, curve slope 541 is converted into axial critical active force (critical hydraulic pressure value is long-pending with hydraulic action face 543 areas) with active force and acts on blood through hydraulic action face 543.Because set critical hydraulic pressure less than path hydraulic pressure this moment, and the associated components parameter satisfies the concurrent force equilibrium equation, the elastic force of spring 2 can not make hydraulic drive part 54 move, and buckle teeth 121 stays in the initial position on inclined-plane 32.When blood sampling finishes, the path fluid pressure drop is to setting critical hydraulic pressure when following, the concurrent force disequilibrium, hydraulic drive part 54 is promoted by spring 2 elastic force, contact 122 loses curve slope 541 constraint, buckle teeth 121 from the inclined-plane 32 initial positions shift to terminal point, puncture body 3 promotes lower edge axial displacement at spring 2 elastic force, its end spine 33 thorn disconnection siphunculus annular thin walls 554 make communicating pipe body 551 separate with outer shroud 552,553.Along with the displacement of puncture body 3, communicating pipe tail end plug 5513 stress and deformations merging, its end is absorbed in puncture body 3 inner chambers, with its sealing; Simultaneously, puncture body inner chamber halfpace 34 props up communicating pipe body boss 5512.So far, vein pocket type hemostix is necessary that because of the former of its pin portion adjacent regions structure irreversible change takes place can not re-use.
4, the autocontrol method of tubular type hemostix needle tip retracts and needle stand and overcoat recycling plant
Shown in Fig. 1 to 8, the invention provides the autocontrol method of a kind of tubular type hemostix needle tip retracts and needle stand and overcoat recycling plant, be made up of spring base 1, spring 2, springing part 3, needle point 4, overcoat needle stand siamese part 5, hydraulic drive part 6, piston 7, core bar 8, the concurrent force equilibrium equation of setting critical hydraulic pressure value and constraint parameters of operating part, only be with the difference of the autocontrol method of syringe needle point retraction and needle stand and overcoat recycling plant: setting critical hydraulic pressure value is 2000Pa-5000Pa.All the other ingredients and control principle are identical.
When promoting core bar 8 with the blood sample injecting tube that extracts, even it is firmly very little, as long as blood sample flows out from needle point 4 continuously, internal hydraulic pressure just can promote hydraulic drive part 6 effective actions, and when blood sample stops from needle point 4 outflows, the elastic force of spring 2 can effectively do work, and finishes the whole self-destruction process that needle tip retracts and needle stand and overcoat disintegrate, and makes the tubular type hemostix be necessary that because of it is former structure irreversible change takes place can not re-use.
Claims (2)
1, the autocontrol method of a kind of syringe, infusion set and hemostix self-desttruction equipment is characterized in that: a hydraulic drive part is set in the sphere of action of described syringe, infusion set and hemostix internal hydraulic pressure; One spring is set on the axis of described hydraulic drive part; In the excursion of described syringe, infusion set and hemostix internal hydraulic pressure, set a critical hydraulic pressure value; Long-pending definite critical active force with described critical hydraulic pressure value and described hydraulic drive part hydraulic pressure stress surface area; List the concurrent force equilibrium equation of described critical active force and described spring force; Make the associated components parameter of described self-desttruction equipment satisfy described concurrent force equilibrium equation.
2, the autocontrol method of syringe, infusion set and hemostix self-desttruction equipment according to claim 1, it is characterized in that: described critical hydraulic pressure value is 2000Pa-10000Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510022314 CN1810310A (en) | 2005-12-15 | 2005-12-15 | Automatic control method for self-destructor of syringe, infusion set and hemostix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510022314 CN1810310A (en) | 2005-12-15 | 2005-12-15 | Automatic control method for self-destructor of syringe, infusion set and hemostix |
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| Publication Number | Publication Date |
|---|---|
| CN1810310A true CN1810310A (en) | 2006-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510022314 Pending CN1810310A (en) | 2005-12-15 | 2005-12-15 | Automatic control method for self-destructor of syringe, infusion set and hemostix |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107184397A (en) * | 2017-07-18 | 2017-09-22 | 山西医科大学 | A kind of radiopharmaceutical of radiation proof prepares injection device automatically |
| CN107913443A (en) * | 2012-12-31 | 2018-04-17 | 麦德提格有限责任公司 | Infusion and blood collection device and method |
-
2005
- 2005-12-15 CN CN 200510022314 patent/CN1810310A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913443A (en) * | 2012-12-31 | 2018-04-17 | 麦德提格有限责任公司 | Infusion and blood collection device and method |
| CN107913443B (en) * | 2012-12-31 | 2020-07-14 | 麦德提格有限责任公司 | Infusion and blood collection devices and methods |
| CN107184397A (en) * | 2017-07-18 | 2017-09-22 | 山西医科大学 | A kind of radiopharmaceutical of radiation proof prepares injection device automatically |
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