CN102319706A - Indwelling catheter embolism clearing device based on negative pressure suction principle - Google Patents
Indwelling catheter embolism clearing device based on negative pressure suction principle Download PDFInfo
- Publication number
- CN102319706A CN102319706A CN201110122672A CN201110122672A CN102319706A CN 102319706 A CN102319706 A CN 102319706A CN 201110122672 A CN201110122672 A CN 201110122672A CN 201110122672 A CN201110122672 A CN 201110122672A CN 102319706 A CN102319706 A CN 102319706A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- negative pressure
- inlying catheter
- vacuum suction
- suction principle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to the technical field of medical appliances, in particular to an indwelling catheter embolism clearing device based on a negative pressure suction principle. The device is based on the negative pressure suction principle and consists of a hollow connecting end and an assembly with preset negative pressure or an assembly capable of generating the negative pressure, wherein the assembly with the preset negative pressure or the assembly capable of generating the negative pressure is provided with a negative pressure cavity, when the device is used, the connecting end of the device is communicated with an indwelling catheter, the negative pressure work is started for sucking out the coagulation thrombus or the embolus remained at an inner cavity of the indwelling catheter, the effect of clearing the embolism to realize the safety is reached, the problems of the indwelling catheter existing in the prior art are solved, and the hidden risk is avoided.
Description
Technical field
The present invention relates to technical field of medical instruments, be specifically related to a kind of inlying catheter embolism scavenge unit based on the vacuum suction principle.
Background technology
Venous detaining needle as the substitute products of intravenous infusion needle from first Application in 1958 since clinical; Generally used in American-European countries before 30 years; Because of its significant convenience; China also progressively promoted the use of in the nineties in 20th century, and it mainly is made up of puncture draw point and inlying catheter, kept somewhere in the human vein blood vessel infusion because of inlying catheter and gained the name.Along with a large amount of uses of remaining needle, problem and risk that inlying catheter is hidden also progressively emerge, and these problems are blood coagulation and blocking problem of inlying catheter.Use so far above 20 years at China's remaining needle; And according to people such as Han Wei in that " paper " can come the applied analysis comparative studies in venous detaining needle of good fortune joint and calparine cap " delivered of clinical neurosurgery journal 2007 the 4th the 2nd phase of volume is pointed out once civilian experimental data; Use plugging case that remaining needle that calparine cap tube sealing handles produces unexpectedly still up to 40%, visible indwelling tube blockage problem is serious in large-area.The discussion of relevant these problems is since remaining needle is brought into use, just from stopping; For this reason, many practitioners of nursing industry study always and inquire into and how to avoid causing the conduit blocking problem because of blood coagulation, on the nursing angle; Successively propose and used many treating methods such as catheters irrigation, heparin sodium aqua tube sealing, effect is unsatisfactory, and medicine equipment manufacturer also develops products such as the tube-sealing solution cooperation processing of calparine cap, terminal sterilization in succession; In recent years, the Needleless barotropic joint is known as and can addresses the above problem, with the come good fortune joint of American I CU medical company production; Especially CLC2000 type positive pressure connector, being known as is the state-of-the-art infusion products in the whole world, can be used as in recent years, inlying catheter stops up a representative of handling; Yet, even so, be the product of representative with the come good fortune joint of American I CU medical company; The positive pressure connector remaining needle that comprises famous German Bei Lang company (BRAUN) or U.S. company BD; Neither really solve problem effectively, be to have handled blockage problem at most, and the experimental data of people's such as above-mentioned Han Wei same piece of writing article is also pointed out; It is 6% that application can come the blood back number of good fortune positive pressure connector, but reaches 88%! unexpectedly with the blood back number of calparine cap tube sealing
Undoubtedly, the scheme that above-mentioned all processing are stopped up is effectively, and it has reduced the nursing that plugging brought trouble significantly; But technical staff as the medical industry field; Be the ratio that should not avoid the blood back number, it will be apparent to one skilled in the art that with blood directly to cause blood coagulation!
Blood coagulation is relevant and close with stopping up, and is the difference of degree, and blood coagulation is quantitative change; Stopping up then is qualitative change, and the final result of blood coagulation is to cause the inlying catheter embolism, but in actual clinical; Be not under transfusion state, to show as not stop up; Just representing not have the blood coagulation bolt in the inlying catheter, above-mentioned 8% or 88% blood back number can be disclosed in the risk that clinical manifestation is hidden down for blocked state not at least.Total institute is known, and the blood coagulation bolt does not show as fine and close lump, and most soft clot; We also know, in other words the common absolute altitude of venous transfusion is about 100cm; The pressure reduction of annotating during transfusion in inlying catheter reaches 10kPa approximately, and these blood coagulation bolts squeeze at so big pressure and to push; Do not produce the obstruction no wonder, because the pressure of 10kPa is enough to back into them in the blood vessel.The inducible human body security risk of thrombus needn't be given unnecessary details, and significantly risk is, these blood coagulation bolts have generally all surpassed 10 hours, they can not be in blood vessel size degradation.
These blood coagulation bolts are hidden in the inlying catheter end; Be hidden in we and the opaque blood vessel; Naked eyes can't directly be observed and be hidden relatively; But perhaps the risk that it brings, its harm are just surpassing the facility that remaining needle brought, and do not go thoroughly to address the above problem effectively yet have a kind of intrinsically safe utensil at present.
Summary of the invention
The object of the present invention is to provide a kind ofly can easyly overcome the risk that relates in the above-mentioned background technology up hill and dale, and definite effect, based on the inlying catheter embolism scavenge unit of vacuum suction principle.
For realizing above-mentioned technical purpose, the technical scheme below the present invention has adopted:
A kind of inlying catheter embolism scavenge unit based on the vacuum suction principle is made up of incoming end of hollow 1 and negative pressure part 2, and the assembly that said negative pressure part 2 is prefabricated negative pressure maybe can produce the assembly of negative pressure.Wherein, said incoming end 1 is a kind of hollow joint that can closely connect inlying catheter, and it is outer cone joint or 6: 100 female cone joints of 6: 100; Said negative pressure part 2 is made up of sleeve 21 and cover core 22, and said sleeve 21 is hollow tubes, and an end is provided with aperture, and is connected with incoming end 1 or via flexible pipe connection incoming end 1, other end opening; Said cover core 22 1 ends stretch into sleeve 21 inner chambers, and cover core 22 is that an outer end is airtight, the hollow tube of inserting end opening, and this inserting end opening is with plug 221 sealing, and the inner chamber of its hollow forms the negative pressure cavity 222 of a prefabricated negative pressure; Said sleeve 21 inner chambers are having an end of aperture, and the hollow puncture needle tubing 3 of a both ends open is installed, and it is communicated with incoming end 1.
Said apparatus; Its incoming end 1 is designed to 6: 100 outer cone joint or female cone joint, is the joint design for the remaining needle that adapts to diversity better, but cone joint is in the majority beyond general; Cone joint is the international principle of non-puncture of catheter medicine equipment or non-bonding connection; The present technique scheme is followed this principle, and with 6: 100 taper design, is because 6: 100 taper design is the most firm design in non-puncture or the non-bonding connection.
In the technical scheme of the present invention, incoming end 1 is to be communicated with the puncture needle tubing 3 that is installed in sleeve 21 inner chambers, behind the incoming end 1 connection indwelling needle catheter that prevents this device; And produce the inlying catheter blood back and ooze pollution before not reaching enforcement blood coagulation removing, but for overlaying on 31 sealings of puncture needle gum cover of puncture needle tubing 3 outward, said puncture needle tubing 3 outer seal sleeves are equipped with a puncture needle gum cover 31; The sealing of one of which end; Other end opening, openend are enclosed within the root that puncture needle tubing 3 is connected with sleeve 21, even this setting produces blood back; Also can be punctured 31 sealings of pin gum cover; And puncture needle gum cover 31 makes the path of blood vessel, inlying catheter, incoming end 1 and puncture needle tubing 3 form sealing to external world, is a kind of protection to the transfusion path that gets into human vas, avoids cross-infection.
In addition, in the technical scheme of the present invention, said sleeve 21 is connected with incoming end 1 or connects via a flexible pipe; This is two kinds of connected modes, and sleeve 21 is the shortest with incoming end 1 direct-connected mode path, and the negative pressure cavity 222 of said cover core 22 needs prefabricated negative pressure minimum; Succinct and advantages of small volume, another kind of sleeve 21 and incoming end 1 have increased flexible pipe via a flexible pipe ways of connecting on the path; The negative pressure cavity 222 of said cover core 22 needs prefabricated negative pressure relatively large, and volume is also corresponding bigger, yet but adapts to quite a few nursing staff's of China custom; Though architectural difference is arranged, yet its effect that reaches is identical.
Make puncture needle tubing 3 puncture plug 221 for avoiding assembling or transportation or unexpected extruding occurring when using, and cause the prefabricated negative pressure of negative pressure cavity 222 to leak, said cover core 22 outer ends are provided with the detachable safety plate 223 that a restriction cover core 22 pushes sleeve 21 inner chambers; What sleeve 21 openends were touched in its upper end grips baffle plate 211; Lower end or side are connected with cover core 22, and such setting makes safety plate 223 can spacingly before use withstand cover core 22, and unlikely cover core 22 loses negative pressure under unexpected extruding; And in use; The safety plate 223 that fractures can be removed spacingly, pushes away before cover core 22 can be realized and works.
For fear of cover core 22 when pushing, the air in the sleeve 21 can't be discharged and caused and push difficulty, are provided with exhaust space 225 between said sleeve 21 and the cover core 22.
When using this device; Although instructions for use is consistent; But different nursing staff's individualities must have a little difference; The action that pushes cover core 22 for fear of some nursing staff is too slow, and causes the negative pressure cavity negative pressure of cover core 22 to leak and lost efficacy, and the length of putting the first edge on a knife or a pair of scissors of said puncture needle tubing 3 is punctured thickness a little less than said plug 221; This is provided with inclined-plane puncture mouth of pipe that guarantees puncture needle tubing 3 and is all coated by plug 221, has avoided the mouth of pipe and whole insertion but has caused plug 221 to be got into the drawback that air reduces negative pressure by opening.
Inlying catheter blood coagulation bolt of the present invention or embolism are removed principle and are:
In an airtight relatively cavity, the suction pressure that utilizes negative pressure to form can attract the interior material of cavity to go to the principle of an end of negative pressure source; Be commonly known, on the therapeutic treatment means, also be widely used, postoperative blood or body fluid are carried out the depression drainage device of drainage like application of negative pressure; Miscarriage is implemented vacuum suction to remove the operation of embryonic tissue in the uterus to early pregnancy; All be based on the vacuum suction principle, and technical scheme of the present invention also is based on this principle design manufacturing and uses, through technique scheme; Be connected the negative pressure cavity 222 of blood vessel, inlying catheter, incoming end 1, puncture needle tubing 3 and cover core 22 in order during application and connect into an airtight cavity; The negative pressure of utilizing the negative pressure cavity 222 of prefabricated negative pressure to produce, the embolus that attracts to be formed at the inlying catheter inner chamber gets in the negative pressure cavity 222 ccontaining, and reaches the object of the invention.
The objective of the invention is to realize like this:
Outer cone joint with the incoming end 1 of this device is closely connected the female cone joint that inlying catheter exposes; Because inlying catheter is to be communicated with human vas and to keep somewhere wherein, then after this device connection, even incoming end 1 of blood vessel, inlying catheter, this device and the puncture needle tubing 3 that is installed in sleeve 21 inner chambers are communicated with in order; At this moment; Because puncture needle tubing 3 outer seal sleeves are equipped with a puncture needle gum cover 31, the sealing of one of which end, another
End opening, openend are enclosed within the root that puncture needle tubing 3 is connected with sleeve 21, so this path that is communicated with in order is closed.After confirming that this device and inlying catheter are connected; Dismounting is positioned at the safety plate 223 of cover core 22 outer ends, grips baffle plate 211 with what forefinger and middle finger propped up gripper sleeve 21 openends, and thumb is pressed the base plate 224 that overlaps core and pushed away in the sleeve 21 fast and uses up; At this moment because the puncture needle gum cover 31 of sealing puncture needle tubing 3 is flexible glue class big envelopes; The cover core that got into 22 squeezes and pushes away and crispatura, and puncture needle tubing 3 exposes and puncture fast the plug 221 of puncture needle gum cover 31 and cover core 22, and after puncturing plug 221; The path of " negative pressure cavity 222 of blood vessel-inlying catheter-incoming end 1-puncture needle tubing-cover core 22 " connects immediately; And this path is the path of a sealing, and an end of closed access then is the prefabricated negative pressure cavity 222 that negative pressure is arranged, thus negative pressure cavity 222 prefabricated negative pressure act on the inlying catheter inner chamber at once; With the formed blood coagulation bolt of its inner chamber or ccontaining in negative pressure cavity 222 to the embolus total number sucking-off of stopping up; Thereby thoroughly remove the blockage problem of inlying catheter and be formed at the blood coagulation bolt in the inlying catheter, avoid when infusion once more, washing away in the human vas, cause risk or accident.
Technique scheme of the present invention and not exclusive mode according to the principle of vacuum suction, also can adopt other modes to realize, to reach effect same, will explain in an embodiment.
And the vacuum magnitude of design technical scheme of the present invention and the volume of negative pressure cavity 222; All can regulate as required; Be advisable to attract blood coagulation bolt and embolus by the unlikely flat pipe of inlying catheter that causes round vacuum magnitude for the aim of its adjusting; Volume size then is advisable with whole content of sucking-off inlying catheter inner chamber, can't cause meeting to attract the doubt of appearing many blood.Application carries out the inlying catheter obstruction based on the technical scheme of the present invention of vacuum suction principle or the blood coagulation bolt is removed; Its utensil is made simple and easy; Low production cost and application highly effective and safe, definite effect certainty; Be thoroughly solve remaining needle and come out since all the time outstanding question and the effective scheme of hiding risk, to improving whole injection quality remarkable meaning is arranged.
Description of drawings
Fig. 1 is the structural representation of device embodiment 1 according to the invention.
Fig. 2 is the structural representation of device embodiment 2 according to the invention.
Fig. 3 is the structural representation of structural representation when producing negative pressure of device embodiment 3 according to the invention.
Fig. 4 is the structural representation of structural representation when producing negative pressure of device embodiment 4 according to the invention.
Fig. 5 is the incoming end structural representation of device embodiment 5 according to the invention.
The specific embodiment
Apparatus of the present invention are done further with preferred embodiment below in conjunction with accompanying drawing and to be specified.
Inlying catheter embolism scavenge unit as shown in Figure 1 is made up of incoming end of hollow 1 and negative pressure part 2, and said negative pressure part 2 is assemblies of prefabricated negative pressure.Wherein, said incoming end 1 is a kind of hollow joint that can closely connect inlying catheter, and it is outer cone joint or 6: 100 female cone joints of 6: 100; Said negative pressure part 2 is made up of sleeve 21 and cover core 22, and said sleeve 21 is hollow tubes, and an end is provided with aperture, and is connected with incoming end 1 or via flexible pipe connection incoming end 1, other end opening; Said cover core 22 1 ends stretch into sleeve 21 inner chambers, and cover core 22 is that an outer end is airtight, the hollow tube of inserting end opening, and this inserting end opening is with plug 221 sealing, and the inner chamber of its hollow forms the negative pressure cavity 222 of a prefabricated negative pressure; Said sleeve 21 inner chambers are having an end of aperture, and the hollow puncture needle tubing 3 of a both ends open is installed, and it is communicated with incoming end 1.The said puncture needle tubing 3 outer puncture needle gum covers 31 that are with a sealing puncture needle tubing 3, the sealing of one of which end, other end opening, openend are enclosed within the root that puncture needle tubing 3 is connected with sleeve 21.Said cover core 22 outer ends are provided with the detachable safety plate 223 that a restriction cover core 22 pushes sleeve 21 inner chambers, and what sleeve 21 openends were touched in its upper end grips baffle plate 211, and lower end or side are connected with cover core 22.Be provided with exhaust space 225 between said sleeve 21 and the cover core 22.
During the work of this device, open the overlay film of keeping somewhere the female cone joint that needle tubing exposes, routine disinfection is handled; The female cone joint that the hand-held remaining needle pipe of nursing staff one exposes, another held sleeve 21 screws in the outer cone joint of the incoming end 1 of this device or insert; Make its junction sealing firmly; Remove the safety plate 223 on this device cover core 22, grip baffle plate 211 with what forefinger and middle finger propped up gripper sleeve 21 openends, thumb is pressed the base plate 224 that overlaps core; To overlap core 22 and in sleeve 21, press down and push away to the greatest extent, get final product blood coagulation bolt or embolus that sucking-off is trapped in the inlying catheter inner chamber.Stop after the several seconds guarantees to attract to accomplish, the female cone joint that a hand-held remaining needle pipe exposes, another held sleeve 21 screw out or extract this device after abandon.Only need the several seconds, can implement to remove fully, connect transfusion device subsequently and implement infusion treatment, reach the object of the invention obstruction or the hiding blood coagulation bolt of keeping somewhere needle tubing.
Inlying catheter embolism scavenge unit as shown in Figure 2 is made up of incoming end of hollow 1 and negative pressure part 2, and said negative pressure part 2 is assemblies of prefabricated negative pressure.Said incoming end 1 is a kind of hollow joint that can closely connect inlying catheter, and it is outer cone joint or 6: 100 female cone joints of 6: 100.Said outer cone joint is a locking type outer cone joint.Said negative pressure part 2 is made up of sleeve 21 and cover core 22, and said cover core 22-end stretches into sleeve 21 inner chambers.Said sleeve 21 is hollow tubes, and an end is provided with aperture, and is connected with incoming end 1 or connects incoming end 2, other end opening via a flexible pipe.The outer wall of said sleeve 21 is provided with external screw thread 212.Said negative pressure part 2 is made up of with rotation set 23 cover core 22, and said cover core 22 is installed in rotation set 23 inner chambers, and an end stretches into sleeve 21 inner chambers.Said rotation set 23 inwalls are provided with the internal thread 231 adaptive with the external screw thread of said sleeve 21 outer walls 212, and an end of sleeve 21 openings screws in the rotation set 23.Said cover core 22 outer walls are provided with the negative clasp 223 of an indent, and the other end of said rotation set 23 screw-in directions is provided with the positive clasp 232 of an evagination, and positive clasp 232 stretches in the groove of negative clasp 223.
Press the said structure of technical scheme of present embodiment; It is different that its difference with embodiment 1 is that actuating sleeve core 22 gets in sleeve 21 inner chambers mode that starts negative pressure cavity 222 work fully; Embodiment 1 is directly to pushing; And present embodiment is that laterally rotation pushes, but all can reach the effect same with embodiment 1, realizes the object of the invention.
During the device work of present embodiment; Nursing staff's held point is the front end of the sleeve 21 of this device; After connecting inlying catheter by the mode of embodiment 1; Grip rotation set 23 and rotate until cover core 22 and in sleeve 21, push away to the greatest extent, can sucking-off be trapped in the blood coagulation bolt or the embolus of inlying catheter inner chamber, stop and screw out or pull out this device after the several seconds and can implement transfusion.Because said cover core 22 outer walls are provided with the negative clasp 223 of an indent; The other end of said rotation set 23 screw-in directions is provided with the positive clasp 232 of an evagination; Positive clasp 232 stretches in the groove of negative clasp 223, and pulling sleeve 21 stung to wear the plug 221 of core 22 and start negative pressure cavity 222 and works forward when such setting made rotation set 23 rotate forward; But cover core 22 is not followed rotation in the time of making rotation set 23 rotations simultaneously, avoids overlapping core 22 and rotates the uncertain factor that moves ahead and bring.
Inlying catheter embolism scavenge unit as shown in Figure 3, diagram left side are the states before this device uses, the state after the right side is to use, and this device is made up of with negative pressure part 2 incoming end 1 of hollow, and said negative pressure part 2 is the assemblies that can produce negative pressure.Said incoming end 1 is a kind of hollow joint that can closely connect inlying catheter, and it is outer cone joint or 6: 100 female cone joints of 6: 100.Said outer cone joint is a locking type outer cone joint.Said negative pressure part 2 is made up of sleeve 21 and cover core 22, and said cover core 22 1 ends stretch into sleeve 21 inner chambers.Said sleeve 21 is hollow tubes, and an end is provided with aperture, and is connected with incoming end 1 or connects incoming end 2, other end opening via a flexible pipe.Said sleeve 21 sleeves 21 are hollow tubes of an end opening, and the inwall of sleeve 21 middle part is provided with a locating ring 214, are provided with a tight locking button 215 at the end of opening one end, and the outer wall of the sleeve 21 above tight locking button 215 is provided with a releasing piece 213.Said cover core 22 is parts or all stretches into sleeve 21 and the core bar of chamber slip within it that overlap core 22 the inners piston-type plug 221 is installed, the outer end is equipped with a spring 226.Said piston-type plug 221 is close to sealing with the inwall of sleeve 21, and said spring 226 is placed in outside the core 22, and is limited between the locating ring 214 of the base plate 227 that overlaps core 22 and sleeve 21.Cover core 22 placed sleeve 21 inner chamber front ends when said spring 226 was oppressed, and cover core 22 is that base plate 227 is by tight locking button 215 lockings.
Press the said structure of technical scheme of present embodiment; Its difference with embodiment 1 or 2 is that the mode of said negative pressure part 2 generation negative pressure is different; Embodiment 1 or 2 is prefabricated negative pressure; It overlaps core 22 prior prefabricated negative pressure and a negative pressure cavity 222 is arranged; And present embodiment produces driving force pulling cover core 22 and produces the required negative pressure of attraction work when being to rely on spring 226 to discharge, and belongs to back system negative pressure mode, with sleeve 21 inner chambers formation when its formed negative pressure cavity 222 is the stressed recession of the piston-type plug 221 of cover core 22.Its negative pressure producing method and the foregoing description are different, but are all the application of negative pressure attraction principle, can reach the effect same with embodiment 1 equally, can realize the object of the invention.
Like figure; The device of present embodiment before use; The base plate 227 of cover core 22 is by tight locking button 215 fastenings of the openend of sleeve 21, and spring 226 is compressed surrender between the locating ring 214 and base plate 227 of sleeve 21, thereby spring 226 is compressed and has the powerful potential energy that stretches.During work, nursing staff's held point be the stage casing of sleeve 21 of this device to front end, connect inlying catheter by the mode of embodiment 1 after; Grip sleeve 21, and slightly firmly press releasing piece 213 with forefinger and thumb, at this moment the openend of sleeve 21 is stressed and somewhat deformed is turned up; Tight locking button 215 unclamps base plate 227, under the potential energy effect of spring 226, and under the position-limiting action of locating ring 214; Spring 226 is upheld to the openend of sleeve 21 rapidly, thereby drive cover core 22 is outwards pulled out.Simultaneously because the inner of said cover core 22 is equipped with the piston-type plug 221 of being close to sealing with sleeve 21 inwalls; When it outwards spurred with cover core 22, moment produced a negative pressure suction force, acts on the inner chamber of inlying catheter; Sucking-off is trapped in the blood coagulation bolt or the embolus of inlying catheter inner chamber; Be placed in piston-type plug 221 and the formed negative pressure cavity of sleeve 21 inner chambers, do not squeeze the base plate 227 of pushing sleeve core this moment, in order to avoid push again in blood coagulation bolt or the embolus.This device breaks away from and can infuse after stopping the several seconds.
This implements described device; Locating ring 214 has two-way function, but the release direction of one of which restraining spring 226 is outwards to uphold, with pulling cover core 22 outward; Implement to attract to remove blood coagulation bolt or embolus to form negative pressure; But the stroke that its two positioning sleeves core 22 is outwards pulled out, the promptly quantitative indirectly negative pressure value that forms is avoided overdraft blood.Through the position setting of adjustment locating ring 214 and the yield strength of spring 226, can produce the needed negative pressure value of inlying catheter and the traffic attraction that are fit to different size.
Embodiment 4
Inlying catheter embolism scavenge unit as shown in Figure 4, diagram left side are the states before this device uses, the state after the right side is to use, and this device is made up of with negative pressure part 2 incoming end 1 of hollow, and said negative pressure part 2 is the assemblies that can produce negative pressure.Said incoming end 1 is a kind of hollow joint that can closely connect inlying catheter, and it is outer cone joint or 6: 100 female cone joints of 6: 100, and said outer cone joint is a locking type outer cone joint.Said negative pressure part 2 is made up of sleeve 21 sharp cover cores 22, and said cover core 22 1 ends stretch into sleeve 21 inner chambers.Said sleeve 21 is hollow tubes, and an end is provided with aperture, and is connected with incoming end 1 or connects incoming end 2, other end opening via a flexible pipe.Said sleeve 21 openings one end is provided with and grips baffle plate 211; Said cover core 22 is core bars that stretch into sleeve 21 and chamber slip within it; Its inserting end is equipped with piston-type plug 221, and the outer end is provided with push pedal 224, and said piston-type plug 221 is close to sealing with the inwall of sleeve 21.
Press the said structure of technical scheme of present embodiment, compare with embodiment 3, present embodiment is a kind of succinct pattern.The generation pattern of its negative pressure is consistent with embodiment 3; Belong to back system negative pressure mode, compare with embodiment 3, its difference is; Embodiment 3 carries power that negative pressure produces; Present embodiment then needs the nursing staff manually to produce power and produces negative pressure, although succinct, but still can realize the object of the invention.
Like figure, the device of present embodiment before use, cover core 22 and the piston-type plug 221 that is installed in its front end push away the inner chamber that is all in sleeve 21 forward; Grip after sleeve 21 connects inlying catheter like the mode of embodiment 1, grip sleeve 21 outer walls on the other hand, spur the push pedal 224 of said cover core 22 on the other hand; Because the inner of said cover core 22 is equipped with the piston-type plug 221 of being close to sealing with sleeve 21 inwalls; When it outwards spurred with cover core 22, moment produced a negative pressure suction force, acts on the inner chamber of inlying catheter; Sucking-off is trapped in the blood coagulation bolt or the embolus of inlying catheter inner chamber; Be placed in piston-type plug 221 and the formed negative pressure cavity of sleeve 21 inner chambers, do not squeeze the base plate 227 of pushing sleeve core this moment, in order to avoid push again in blood coagulation bolt or the embolus.This device breaks away from and can infuse after stopping the several seconds.
Present embodiment and above-mentioned each embodiment are to be difficult to quantitative work relatively, depend on nursing staff's experience, but still the effectively the most succinct scheme of can yet be regarded as, and can realize the object of the invention.
Embodiment 5
The incoming end 1 of inlying catheter embolism scavenge unit as shown in Figure 5, left hand view are shown the situation of the technical scheme of back system negative pressure, and right diagram is the situation of prefabricated negative pressure technique scheme.Inlying catheter embolism scavenge unit is made up of with negative pressure part 2 incoming end 1 of hollow, and the assembly that said negative pressure part 2 is prefabricated negative pressure maybe can produce the assembly of negative pressure.Wherein, said incoming end 1 is a kind of hollow joint that can closely connect inlying catheter, and said incoming end 1 specifically is the needle tube joint 11 that can puncture, and outside the said needle tube joint that punctures 11 protective sleeve 12, one of which end branch sleeve 21, other end opening is arranged.
As shown in Figure 5; The difference of present embodiment and above-mentioned each embodiment of the present invention is; Described incoming end 1 is a needle tube joint that can pierce through 11, and the incoming end 1 of outer cone joint or female cone joint geometry is another way of realization of incoming end 1 described in the technical scheme of the present invention described in above-mentioned each embodiment of its alternative the present invention; Its beneficial effect is closely to connect the inlying catheter of using non-cone joint, like the calparine cap joint styles that still use in a large number at present.The inlying catheter of calparine cap joint, what its sealing inlying catheter was terminal is a soft rubber grain piece, when using the described device work of present embodiment; One hand-held calparine cap grips sleeve 21 on the other hand, and protective sleeve 12 openends are inserted in calparine cap; Promote sleeve 21 forward and make the needle tube joint 11 of incoming end 1 pierce through the entering calparine cap,, connect inlying catheter until the rubber grain piece that pierces through calparine cap; The work that makes negative pressure cavity 222 begin to attract to remove blood coagulation bolt or embolus realizes the object of the invention.
Like Fig. 5, the no matter situation of the back system negative pressure technique scheme of left side diagram indication, or the situation of the prefabricated negative pressure technique scheme of right diagram indication, the said needle tube joint that the punctures 11 outer protective sleeves 12, one of which end branch sleeve 21, other end opening of being equipped with.It is provided with purpose is plan safety, the nursing staff of hand-held calparine cap when avoiding stabbing operation.
Although technical scheme of the present invention is to describe with reference to specific embodiment, this description does not also mean that the present invention is constituted restriction.With reference to design principle of the present invention or description, other variations of the disclosed embodiments, for example incoming end 1 of the present invention is separated with sleeve 21 between the back with flexible pipe to ways of connecting; Or incoming end 1 of the present invention and negative pressure part 2 disassembled into two independently modes of being applied of member; Or according to principle of the present invention, technical scheme of the present invention is disassembled, directly graft in incoming end 1 remaining needle and become the member of remaining needle; Be aided with independently the negative pressure part 2 of prefabricated negative pressure again and mode such as use; All this kind all can be expected to those skilled in the art, and such variation should belong in the affiliated claim institute restricted portion.
Claims (23)
1. the inlying catheter embolism scavenge unit based on the vacuum suction principle is characterized in that, it is made up of the incoming end (1) and the negative pressure part (2) of hollow, and said negative pressure part (2) is the assembly that the assembly of prefabricated negative pressure maybe can produce negative pressure.
2. according to the said inlying catheter embolism scavenge unit of claim 1 based on the vacuum suction principle; It is characterized in that; Said incoming end (1) is a kind of hollow joint that can closely connect inlying catheter, and it is outer cone joint or 6: 100 female cone joints of 6: 100.
3. according to the said inlying catheter embolism scavenge unit of claim 2, it is characterized in that said outer cone joint is a locking type outer cone joint based on the vacuum suction principle.
4. according to the said inlying catheter embolism scavenge unit based on the vacuum suction principle of claim 1, it is characterized in that said negative pressure part (2) is made up of sleeve (21) and cover core (22), said cover core (22) one ends stretch into sleeve (21) inner chamber.
5. according to the said inlying catheter embolism scavenge unit of claim 4 based on the vacuum suction principle; It is characterized in that said sleeve (21) is a hollow tube, an end is provided with aperture; And be connected with incoming end (1) or connect incoming end (2), other end opening via a flexible pipe.
6. according to the said inlying catheter embolism scavenge unit of claim 4 based on the vacuum suction principle; It is characterized in that; Said cover core (22) is that an outer end is airtight; The hollow tube of inserting end opening, this inserting end opening is with plug (221) sealing, and its hollow cavity forms the negative pressure cavity ((222) of a prefabricated negative pressure.
7. according to claim 1 and 4 or 5 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Said sleeve (21) inner chamber is having an end of aperture, and the hollow puncture needle tubing (3) of a both ends open is installed, and it is communicated with incoming end (1).
8. according to the said inlying catheter embolism scavenge unit of claim 7 based on the vacuum suction principle; It is characterized in that; The outer puncture needle gum cover (31) that is with a sealing puncture needle tubing (3) of said puncture needle tubing (3); The sealing of one of which end, other end opening, openend are enclosed within the root that puncture needle tubing (3) is connected with sleeve (21).
9. according to claim 4 or 6 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Said cover core (22) outer end is provided with the detachable safety plate (223) that a restriction cover core (22) pushes sleeve (21) inner chamber; What sleeve (21) openend was touched in its upper end grips baffle plate (211), and lower end or side are connected with cover core (22).
10. according to the said inlying catheter embolism scavenge unit of claim 1, it is characterized in that, be provided with exhaust space (225) between said sleeve (21) and the cover core (22) based on the vacuum suction principle.
11., it is characterized in that the outer wall of said sleeve (21) is provided with external screw thread (212) according to claim 4 and 5 said inlying catheter embolism scavenge units based on the vacuum suction principle.
12. according to the said inlying catheter embolism scavenge unit of claim 1 based on the vacuum suction principle; It is characterized in that; Said negative pressure part (2) is made up of cover core (22) and rotation set (23), and said cover core (22) is installed in rotation set (23) inner chamber, and an end stretches into sleeve (21) inner chamber.
13. according to claim 11 and 12 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Said rotation set (23) inwall is provided with the internal thread (231) adaptive with the external screw thread (212) of said sleeve (21) outer wall, and an end of sleeve (21) opening screws in the rotation set (23).
14. according to the said inlying catheter embolism scavenge unit of claim 12 based on the vacuum suction principle; It is characterized in that; Said cover core (22) outer wall is provided with the negative clasp (223) of an indent; The other end of said rotation set (23) screw-in direction is provided with the positive clasp (232) of an evagination, and positive clasp (232) stretches in the groove of negative clasp (223).
15. according to claim 4 and 5 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Said sleeve (21) sleeve (21) is the hollow tube of an end opening, and the inwall of sleeve (21) middle part is provided with a locating ring (214), is provided with a tight locking button (215) at the end of opening one end; The outer wall of the sleeve (21) above tight locking button (215) is provided with a releasing piece (213).
16. according to the said inlying catheter embolism scavenge unit of claim 4 based on the vacuum suction principle; It is characterized in that; Said cover core (22) is a part or all stretches into sleeve (21) and the core bar of chamber slip within it; Cover core (22) the inner is equipped with piston-type plug (221), and the outer end is equipped with a spring (226).
17. according to claim 15 and 16 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Said piston-type plug (221) is close to sealing with the inwall of sleeve (21); Said spring (226) is placed in outside the core (22), and is limited between the locating ring (214) of base plate (227) and sleeve (21) of cover core (22).
18. according to claim 15 and 16 or 17 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Cover core (22) placed sleeve (21) inner chamber front end when said spring (226) was oppressed, and cover core (22) is that base plate (227) is locked by tight locking button (215).
19. according to claim 4 and 5 said inlying catheter embolism scavenge units based on the vacuum suction principle; It is characterized in that; Said sleeve (21) opening one end is provided with and grips baffle plate (211); Said cover core (22) is a core bar that stretches into sleeve (21) and chamber slip within it, and its inserting end is equipped with piston-type plug (221), and the outer end is provided with push pedal (224).
20., it is characterized in that said piston-type plug (221) is close to sealing with the inwall of sleeve (21) according to the said inlying catheter embolism scavenge unit of claim 20 based on the vacuum suction principle.
21. according to the said inlying catheter embolism scavenge unit of claim 1～20 based on the vacuum suction principle; Said incoming end (1) is outer cone joint or 6: 100 female cone joint of 6: 100; Can substitute by another kind of pattern; It is characterized in that said incoming end (1) is the needle tube joint (11) that can puncture.
22., it is characterized in that protective sleeve (12), one of which end branch sleeve (21), other end opening are arranged outside the said needle tube joint that punctures (11) according to the said inlying catheter embolism scavenge unit of claim 21 based on the vacuum suction principle.
23. according to claim 6 and 7 said inlying catheter embolism scavenge units based on the vacuum suction principle, the length of putting the first edge on a knife or a pair of scissors of said puncture needle tubing (3) is punctured thickness a little less than said plug (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110122672A CN102319706A (en) | 2011-05-07 | 2011-05-07 | Indwelling catheter embolism clearing device based on negative pressure suction principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110122672A CN102319706A (en) | 2011-05-07 | 2011-05-07 | Indwelling catheter embolism clearing device based on negative pressure suction principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102319706A true CN102319706A (en) | 2012-01-18 |
Family
ID=45447611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110122672A Pending CN102319706A (en) | 2011-05-07 | 2011-05-07 | Indwelling catheter embolism clearing device based on negative pressure suction principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102319706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423762A (en) * | 2011-08-03 | 2012-04-25 | 李林风 | Improved indwelling catheter embolism clearing device and assembling method thereof |
| CN105576276A (en) * | 2014-10-14 | 2016-05-11 | 中国科学院苏州纳米技术与纳米仿生研究所 | Vacuum liquid injection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0654282A1 (en) * | 1993-11-19 | 1995-05-24 | David D. Dr Henderson | Improvement intravenous catheter assembly |
| CN2363724Y (en) * | 1999-03-31 | 2000-02-16 | 曹孟君 | Continuous syringe |
| CN2882555Y (en) * | 2005-12-29 | 2007-03-28 | 陈亚平 | Spiral bone cement propeller |
| US20090264833A1 (en) * | 2008-01-25 | 2009-10-22 | Clear Catheter Systems, Llc | Methods and Devices to Clear Obstructions from Medical Tubes |
| CN201356856Y (en) * | 2009-01-21 | 2009-12-09 | 威海洁瑞医用制品有限公司 | Positive pressure vein remaining needle |
| CN202184987U (en) * | 2011-05-07 | 2012-04-11 | 李林风 | Indwelling catheter embolism remover based on negative-pressure suction principle |
-
2011
- 2011-05-07 CN CN201110122672A patent/CN102319706A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0654282A1 (en) * | 1993-11-19 | 1995-05-24 | David D. Dr Henderson | Improvement intravenous catheter assembly |
| CN2363724Y (en) * | 1999-03-31 | 2000-02-16 | 曹孟君 | Continuous syringe |
| CN2882555Y (en) * | 2005-12-29 | 2007-03-28 | 陈亚平 | Spiral bone cement propeller |
| US20090264833A1 (en) * | 2008-01-25 | 2009-10-22 | Clear Catheter Systems, Llc | Methods and Devices to Clear Obstructions from Medical Tubes |
| CN201356856Y (en) * | 2009-01-21 | 2009-12-09 | 威海洁瑞医用制品有限公司 | Positive pressure vein remaining needle |
| CN202184987U (en) * | 2011-05-07 | 2012-04-11 | 李林风 | Indwelling catheter embolism remover based on negative-pressure suction principle |
Non-Patent Citations (1)
| Title |
|---|
| 李淑清: "静脉留置针的临床应用进展", 《现代医药卫生》, vol. 27, no. 4, 28 February 2011 (2011-02-28), pages 555 - 557 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423762A (en) * | 2011-08-03 | 2012-04-25 | 李林风 | Improved indwelling catheter embolism clearing device and assembling method thereof |
| CN105576276A (en) * | 2014-10-14 | 2016-05-11 | 中国科学院苏州纳米技术与纳米仿生研究所 | Vacuum liquid injection device |
| CN105576276B (en) * | 2014-10-14 | 2018-04-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of vacuum electrolyte filling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6735787B2 (en) | Sheath assembly for inserting a cord-shaped element, in particular a catheter, into the body of a patient | |
| KR102102221B1 (en) | Device for the extraction, storage and/or treatment of blood or other substances of human or animal origin, and for the use of blood compounds or other biological compounds | |
| JP4526391B2 (en) | Device for drawing body fluid | |
| US7214215B2 (en) | Puncture device with a flexible catheter tube for connecting to a medical infusion line | |
| JP2017124216A (en) | Fluid transfer connections | |
| CN202184987U (en) | Indwelling catheter embolism remover based on negative-pressure suction principle | |
| CN102470235B (en) | Safety catheter | |
| CN200970257Y (en) | Disposable puncture device with protection | |
| US5322516A (en) | Safety needle system and method for using the same | |
| CN215739330U (en) | Device is put into fast to arteriopuncture seal wire sheath pipe | |
| EP3187218A1 (en) | Fluid transfer connections | |
| CN107670160A (en) | The drainage tube of surrounding tissue is destroyed when preventing from extracting | |
| EP3316923B1 (en) | Drainage system with o-ring | |
| CN201223430Y (en) | Multifunctional puncture needle | |
| CN203815993U (en) | Recycling-prevention injector with multisection-separated pushing rod | |
| CN102319706A (en) | Indwelling catheter embolism clearing device based on negative pressure suction principle | |
| WO2016061702A1 (en) | Hemodialysis double lumen needle angio catheter | |
| CN212089553U (en) | Blood collection device | |
| WO2017042825A2 (en) | Intravenous catheter with a secured mechanism to avoid reverse flow of the blood | |
| WO2017113852A1 (en) | Medical catheter assembly with non-detachable puncture needle | |
| CN212816350U (en) | A puncture sampling device for medical oncology | |
| CN205434471U (en) | Cyst aspirator | |
| CN208464782U (en) | Internal arteriovenous fistula hypodermic tunnel moulding device | |
| CN203736686U (en) | PICC (peripherally inserted central catheter) | |
| CN209378117U (en) | Novel medical ascites drainage device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120118 |