CA2085978A1 - Indwelling vein cannula - Google Patents
Indwelling vein cannulaInfo
- Publication number
- CA2085978A1 CA2085978A1 CA 2085978 CA2085978A CA2085978A1 CA 2085978 A1 CA2085978 A1 CA 2085978A1 CA 2085978 CA2085978 CA 2085978 CA 2085978 A CA2085978 A CA 2085978A CA 2085978 A1 CA2085978 A1 CA 2085978A1
- Authority
- CA
- Canada
- Prior art keywords
- cannula
- vein
- indwelling
- indwelling vein
- nnula
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0637—Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
Abstract
ABSTRACT
The invention concerns an indwelling vein cannula with a cannula body comprising essentially a plastic cannula and a handle attachment, and with an inner puncture cannula comprising a metal cannula (stylet), the cannula body (2) including a flexing section (11) in the region of the handle attachment (3).
The invention concerns an indwelling vein cannula with a cannula body comprising essentially a plastic cannula and a handle attachment, and with an inner puncture cannula comprising a metal cannula (stylet), the cannula body (2) including a flexing section (11) in the region of the handle attachment (3).
Description
~DWBLLINa V~ c~NNUL~
Th~ inven-t:ion rela~s to all in~welli.n~ vein cann~l:La With a ca.r)rlul~
body aon~lst:i~g ~u~stant~ally of a pJ E~t,:.c oalln~ and a h~nd:l.e. and hav~ng an in-~e~nal piercing cannula provi~d with a matal c~annula (trocar) .
~ntrAv~nou~ ~n~ tion and in~ravenouE3 d~ip inEuE3ion ar~ now indisp~ ble in ~11 ~f ~di~a~ ~reatment. Their dhvelopmen~ wa~
accomplished in mElny E~m~ ep~ and over a lon~ period of time.
Mathods for phlebc~omy and Por madioation have long been kn~wn.
The discovery o~ blood oir~ulation ~ly ln the 17~h centur~
o~e~ted the anatomic phy~ologi~al b~ r~garding inf~sion and tran~fusion. Soo~ the ~i~9~ attempt~ a~ infusion were made, ~irst ~n ahilnal~ and la~er also in human beingE;, althou~h lnitially neither ~ny thqr~.peuti~ ~ffect nor an~r advanc~ment o~ knowledge were o~t~in~d. Sln~e tho r~a~on ~o~ the ini~lal fail~re~ ~ere pro~bly to be at~rlhuted primarily to ~p~ia conditions, th~
invention o~ th~ in~Qction ~yrl~ge in the l~th ~entury ~r~ opene~
the w~ ~o mod~rn in~ation ~herapy. How~v~r, a new chap~e~ in tr~ fu~ion ~oie~14e was b~un a f ter ~he dlaco~ery o~ blood groups at th~ begi~niny o~ ~hl~ ~entury, q~h~n the d~ai~i~e ba~es and technologi~ could be devQloped whic~l are l~rgely what they are today du~ ~o the ~t~m~lu~ ~ the t~o world war~ and the development of int~rnal madi~ine and ana~tha iolo~y. In the me~n~im~
intra~nou~ ~her~py ~or paranter~l m~dlc~tion and fo~ the replacem~ht o~ blood by tran~ ian or infusion hs~ become wide~p~ead.
All illne~es ~n which the m~dica~o~ i~ t~ a~t ~api~ly or ca~no~
be ad~ini~;tered in any other w~y arR ~ ndica~ions f or in~ravl3nou~
in~ection. P~ec~i~ely :ln t~o~nec:tlon wlth 'che lE~ttar i:ype oP c2lse~:, medlc~ on oVer a long period ~)f time is re~Uire~, so thE~t intravenou~ drip infu~ion ig u6ed in adm~ tsr~ ~g the indit~ated ''3 ~
mediaatlon~ In thl6 caee an lnd~r~lling vein c:annula i~; used, whose f~n~tion i~ t~ e ~escrihsd in det~il herewlth.
.~egardlee- of the l~ngth o~ tlme arld rat~ o:~ infu~ion, first A
~:uita~le ve;i n i~ ~:el~3ct~d . It i~ de~irable in the ca~;e o~ an exten~ed in~uE~ n ther~py ~lx~3t to sRleo~ vain~ loaal~ed a5 di~tally as po~ible, ~;o tllat i~ ~ny thrombo~i~ o~cura, more proximally located c~p~n V-3in~ aah be re~;ortad ~o . In ~ny r~a~e, veint3 ~d~ ac~nt to -~oint~ (wr~st~ bow~, etc. ) muElt be av~id~d hecau~e o'cherwls~
when mov~m~n~ or~u:rs th~3 ve~n may ~e in~ur~d or ~3ven punc~tu~ed no matt~r how the o~n~ul~ i~ f ixed in place . As the uE;e of in~ravenou3 ~luld trea~cment increases, a number o~ ~urther developmants of cannul~e h~ve oom~ o ~ge ln ~he last ~w ~cade~. ~nar~as~n~ pre~erence 18 enjoyed by indwelllng cannulae ~ pl~tlc, o~ whiah th~ BO~oalle~ raun~le~ (ragl~tered tradem~rk of ~ ~raun M~lsu~n ~G) is mo~t wid~ly use~.
~h~ known pla~tlc indw~lling v~in aahnUla COIl~i~t~ ~'ir9~ 0~ an inte~nal pl~rcln~ oannula tha ku~ular p~r~. o~ Whi~h ~0116is~ oE
m~tAl (~o-calle~ ~trooar"~, ~nto whi~h R coni~al~y te~lnilla~ing~
alo~ely fi~ing plA~tio tube is slipped. Th~ pla~tic tu~e is sllghtly shorter in l.ength thah the ~rocar an~ the tr~n~i~lon to th~ conioal part is made ~aple~s at the tip o~ the cannulA by pre~ise ~ach~ning, 6~ that, if it ls corre~tl~ halldled, any de~orma~ion o~ the oonical (pl~ ) tip of the c~nnula making the pehetrati~" of the ti~B di~ ult will b~ preven~ed.
Tha manipulatian o~ the k~own indwelling vain ~Rnnula is to be desoxlbed herewlth: After about l~2 to l cm o~ ~h~ ~anrlula has ~een lneer~ed into the lum~n of tha vein, the metal ~oaar i~
retracted to ~uch ~n ~xtent ~hat i~ tip is fully ~nside of the pla~ia ~annula. ~hu~ the ahamb~r at the ~nd of the plastio ~annul~ flll~ ~ith blood, ther~y permittlng lnspection of the locatiorl o~ the i~ldw~lling veLn c:~nnulA. Then the pla~ a~lnUla, t~ith t~le troc~r compl~tio~y ~h~ 21ed .~n lt, 18 adv~n~ed lnto th~
lumen all the w~y up ~o it~ handl~ w~ Le ~l~e v~in ls ~till ~ oke~l.
l'lli~ i~ th~ wely in wl~icll ~hR hletal t~p of th~ tronar iE3 pr~ven~ed ~rom injurinq the vein wall WhRn t~l~ indwell~ nq val~l oannulA i~
in6arted, l~ut the plastic ~e,nnul2. ret~.n~; thq n~ce~;Ary ~;ti~fne.sl~
50 as not t:o b~ k.i7)ke~l by the r~:is~an~e oP the ~)c1n to its ad~an~e. ~tnally, t~ indwellin~ vein canllul~ is ~ixed onto the skin by n~e~ dhe~3lv~ ~rip~ or tlle l.ike at t}le ~ontact WillC,~S
prc~vided on thq c~,nnula body, and the in~otion ~yringe o.r infusic~n s~stem i6 conlle~tecl to it.
A~ explained above, thQ ~cn~wn indwalling v~in ~anl~ula ha~ alroady bn~n v~2ry ~ar dev~loped ~gardlng lts U913~ However, even af~ter in~tall~tiotl ~oJnplicEitiorl~3 aRn dev~lop clu~ to th~a ~ac~ that reli~le fix~l:ion at the ~ o~ the ~atu~l aannula i~ aclliev~.d, anfl y~t ~he transitien betwQ~3n the cannul~ ch~mbMr and t~le mn-lth o~ t~ lfubiorl ~:ub~ e~3 no~ p~xmlt op~imum .eixati~n. Ev~n in the ~a~3~ o~ ~mall ~11d th~r~tore ~llo~t~e.~ i~d~elling vein canJ~ e, this portion oE th~ dw~llLng VQin ~s~nnula protrude~ o~l~ o~ ~he tad "tr1Anyle" (point o~ ~ntry - right aolltaot wing - lef~.
aon~aa~ wing) .~n prc-langatlan o~ thQ long axl~ of the cannula.
~pon an incau~ious .or unc~vnscliou~ movomerlt of the patier~t, wilile a3~eep for ~xampll3, it i~ e~e~ore ea~ily po~sible ~or t;his end of th~ ~a~n~lula tc) be dl~pl~.ced. q~h~ in~usion ~ub~ can conl1e loo6e from ~he indwell~ng vein c~nnula o~, due tc~ tll~ leverin~ aotion of thio protruding free end of thn canJ~ul~, injuri~A oan ooo-~r irl tho ~atunl point~ of entry or ln tha ~ nterior of t;he v~in ~
, It i~ theref~l3 t}l~ obj~3at o~ the invention to configur~ and 1~np~ove the abov~-de~cribed indw~lling vein canllula ~.o the.t the abo~e~mer~t:Lorled di~RdvAIlta~e~ wil~ be avo1ded, And that th~
indwell1ng vein ~annul~ will bo improv~ in 11~ en~i~ety. It i6 ~urtharmore de~l~ed to ~cili~ate the handlln~ o~ the indw~lling v~in cannula and imp~ove it~ oper~tlon wi~hout having ~o lo~e ~he lcnown adva~tage~. ~h~ indwelli~g vein c~nnula aacord~ hg to the invention, in wh~ch ~he ~bove-deAcrib~d ~b~t i~ achieved, is charaateri2ed ~l~stly, and es~ent~ally, b~ the ~act that the a~h~ula body is provide~ wi~h a flexu~ at the poln~ of attachment q~ the handle. ~y thi~ oon~iguration according to the in~ention it i6 brought about ~h~t movement~ ~ran~mit~e~ to the it)dwqllin~
vein ~annula by ~he ih~U~ion t~be can no lon~er be tra~ itt~d to ~he plastic cantul~ lyin~ wl~h~n ~h~ vei~ pecially, the indwelli~ vein c~nnula c~n no longer ~ct a~ a ri~id lever in the area b~tw~n th~ point of entry an~ the openin~ for re~ei~ing th~
injection syrin~ or in~u~ion tube, ~o ~ha~ ~he po~sibility qf injury ~a~ be rsliably for~all~d.
~he OOlnpunent~ re~erre~ to above ;~ w~ll as thosa clalm~d and thos~
d~aribed :I n ~he exampl~a~ of ~3~nbodimHnt, which ~re to ~e us~d in accorcl~nce with ~.he ~nv~ntion, elr~ not ~ub~eot to any ~3peoi~1 ~xohptioh~1 coTId~tion~ a~ to tll~1~ E3i~, corlfl~urR-t.~oJl, c:holc~ o~
h~tarial and technical c:ono~ption, ~o that the arit~ia o~ choLc~
k~own in kheir p~ ul~r ~ ap~ atio~l can be applied without li~nitat.~on, e~nd ~pe~ially t:h~3~r aro ulabl~ 1nd~pen~n~1y of Ohe anoth~ or th~ ~olutlc~l o~ tha problam or o~ ~t l~a:~t p~ t ~hereoP .
Th~r~ are ~lff~ t p4~sibili~i~s for ~mbodying ~nd developing thH
teaching o~ the inv~n~i~n; ~he~ora th~ ~ec~ndAry ola1ms on the one hand oa~ bo oon~ulted in thi~ r~gard, ~nd o~ ~he ~ther h~n~ so ~n the following ~xplanation of ~ preferred embo~1ment ~ the indwelling ~in cannul~ in ~oniunat~on wlth the draw~ng, wherein:
~ig. 1 ls a sid~ VieW o~ ~he indwelling ~ein oannula aoaord~n~ to th~ invent~on, in the assembled ~tate with tlp guard.
Flg. 2 i~ a ~lde view o~ th~ 1ndwelling v~in cannul~ according to the lnv~n~i~n in th~3 dis~ ;em~lqd stat~ with ~he tip guard remov~d .
Fig. 3 ~ sid~ vi~w o~ A part o~ ~he indw6a~.ling v~in cannula accordin~ to th~ invention ~rom Fi~ur~ 2.
Fig. 4 i~ ~ ~id~ ~riew o:~ a par~ of th~ in~wellin~ v~ln cannula e.ccor~llng ~o ~he invention ~xom F;l gur~ ~ .
Fi~ . 5 i~ R plan vl~w of th~ part of i:he indwE311ing ~r~in c: ~nnula a~cordlng ~ thq inven~lon ~rom Figure 4, aJld Flg. 6 1:3 an ~nl~.rg~d ~ec~lon of thQ ~.n~wc~ll.Ln~ v~ln ~an~lula ac~ordin~ to the inv~n~lorl, on the clrcl~3 in brok~3n lin~
~rom Fig~. ~ an~ 5.
F~ g. ~ ~3howl!3 th~ indw~llinç~ v~in c~nnula ~ccordln~ to t.ll~3 in~n-tion, indiaat~d as a whwl~ at 1~ in a oid~ vi~w. q'hH
indwelling v~in a~nnul~ 1, re~ularly a dlspt)~a~ annul~ in thi~ a~ nbl~d ~ e ~fore it:~ ~ir~t ~Jg~. For ~reat~r ~larlty, th~3 indwelllng va~n oannula 1 i~ shown in it~ .inflividual componan-t~;
in a ~id~ vi~w and plan v1~3w irl F~gure!3. 2 and 3, r~p~ctlvely.
~rl p~tiaular, th~3 indw~lling v~in s~.nnula 1 acct~rding t~o thQ
inventlon;l f~r~ ha~ ~he cannula l~o~.y 2 witl~ ndle aonn~ction 3 ~nd thQ plasti~ nnula 4 ~orm~3d ths~ Li]c~wlse ~ormed ther~on are the ~ixation wingE~ s which serve a~ support:ing and aclhering Ine~S16 ~or fa~ nin~ ~h~ indwe1ling vein c~nnul~ 1 on th~ skin.
Thelr und~r~i~e~; are o~ten provided with n~tahes in or~er better to b~3 ad~p~d ~o 'che ~hap~ o~ an arm ~ ~or ex~mpl~ .
s ~
PugllrQn 1 ~o 3 Purth~rmor~ nl~o~ At, 11~ t~ interior oE the cannula body 2 ma~ o~ pla~'cic~, ~here :16 an ln~ e car1nula e~uipp~d w~th a hollow me~al n~edl~, the ~;o-::alled "troc:ar" 7. ~he tip o~
the ~ro~a~ 7 iE~ bevel-ground, a~ it appe~; qultra c:learly ~rom ~igures 2 and 3. For ea~ier hand:llny, th~ p1erclng ln~ide cannul~
~ i~ e~uipp~l with a holding lu~ 8. rrhe inclw~lling vein Gannula 1 i~3 clc~;efl with a trocar cap ~ which i~ ~uc~h that, when ~h~ troa~r 7 i~ remo~recl, thin aap can A~e:o ~erv~ for s~lincJ t:he ,::annula body 2~ ~o~ that purpo~, nnc1 al~o, ol~ c~ou~E;e, to ancJc~tmnodatQ ~n injection E~yrlnge or ~rl infu~ion tuloe no~ E~hown, bo~h ~he cannul~
body 2 and ~hl3 in~id~ cannul~ ~ are made ho~.low cylin~ric~l at thei~ and r~motq ~rom ~he tip. L~ E:tly, it ~an b~ en i n Fl~6 .
and 3 that th~ indwellin~ ~ein ~annulae 1 are prov~d~d with tip uard~3 10 to protect again~;t i~jury and damagQ.
In accordnnce with th~ ih~ nti on the ar~d Df~ the c~Q~nnula body 2 remotQ ~r~m the tip :l~ providecl, a~ ~he p~ I nt o~ attachme!nt o~ the harldla 3, wi~h a ~.exure 1~, ~o that th~ in~eetion ~yrin~e c~r the end of the ln~u~ n tubo ~o lt~ngar n~eds t~o be ln line wi~h ~he lollg axi~ of the oannula (not et3p~3~ia~y indica~cl in ~he drawing~.
The operatic:n o~ thi~ Elexu~e 11, which 1Ej known ~n other ~ields of app~ tlon, can he cle~rly un~rstoo~ ~rom Fi~ures ~ and 5 whlch show the ~annula body 2 in a ~ld~ vi~w and plan Vir3W, respeativsly. ~ccordln0 to ~ ~urther teacl~ing of the inventlon, the ~l~xure ~1 is of ~uch a n~u~ ~nd l~lg~.h that it p~r~its bending over so degraes~ In thlE~ manner, ~c1r example, ~n in~usion tube ~an be attach~ to the indw~lling vein a~nnula 1 perpendir~ula~
to th~ ~rm (~nd ~l~noe i~lso perpendlculAr -to t}l~ v~ln) . Po~s;i ble move~nentE; c~f the infusion tube are transmitted le~s to the cannula bt~dy 2 ~hAn in ~he case o~ conv~n~ional in~we~lin~ veln cannul~e.
In ~rthf~r c~nv~loEInl~nt oi~ t:h~ inventic~n, ~h~ ~r~l~ body ~ i~
p~ovid~l with ~ ~inyer plate 1~ at the han~le 3. It 1~ ~pec!i~lly Advanta~eous i~, accor~lng t:o ~ furthe~ ~e~ g of the inven~ion, th~ fin~ pl~ta 12, adapted to the al~atomy o~ the fin~3r pad af an ~ndex Pinger, i~ ~urved in ~h~pe ~nd~t~r providod wit~h nubs 13 tc~ prevent any glippin~ of the ~ir~e~ C~h the b~nnula bc~dy 2. Th~
above-àe~cribed confi~ur2l~ion p~lnitE; ~peo~all~ a3aBy hzln~lincJ c?f the indwelling vein cannula 1 ~cordin~ to the inven~io3~ ince it ce,n ba ~uid~d aecurely and neve~hele~ en~itively witll th~e~
finge~, the in~ex PihgRr lylr~g orl thR 1~ger platR 12, and the thumb and mi~dle f~n~r laterally gripping the holding lug 8 oP the in~ide pier~ing o~nnula 6~ Here again can ~9 s~en the speal~l a~vantage of th~ previously de~cribed con~igUration o~ the indwe~lin~ vei~ cannul~ 1 aoo~ding to ~ inv~ntio~, becau~e ~aaeration of the ~ei~ ls a very ~requent oomplioatio~ o~
phl~b~tomy, though in ~08t CaSeg lt ls harml~fifi. on~ i~ taught to 'Ihold the indwelling ~in oannula llghtly,i' so a~ ~o ~el ~h~
~e~istance o~ the vein wall, and to ~-lid~ th~ in~ect~on neeclle ~
~en~ltively ~ po~ibl~, ~o a~ ~o ~a a~l~ to sot it lmm~di.ately when blood e~ter~ the cannul~. Thls recomm~nclatio~ uppor~ed by the de~ign de~aribed ~bo~e~
~t i~ not ~hown t~at in~walling vein cannulae ~e often provid~d with two ports, ~r exampl~ to permi~ the cannula ~v be Plushed out. These a~ us~ally provided ~t ~he point of attachmen-t of the cannula ~ody at thq ~ixation wing~. ~h~re~ore it i~ de~irabl~
th~t, ln ~he ca~e o~ indwellin~ vein cannulAe in accordanç~ wlth the invention/ the ~inger plate ~imult~n~ously form the cover o~
the .second port.
L~tly, an ~ddlti4nal ~eachin~ o~ the inventlon consists in pxovidln~ ~t leAst one cros~ bore 14 ~t its tlp. For easie~
compr~hen~ion, the area with~n ~he brokell circle K of Fl~rss 3 ti `J ~
and 5 ;i.B ~hown ~nlarged in Fig. ~. Xn th~ ~3mhodimen~ own, and to ~his ~xtent pre~err~d, thQ plaE~tlc aannula ~ ~;hown only a~ its tip has ~le cro~ bor~ 14, bllt conf igurAt~ion~ wi1:h ~everal cros~
bor~ are a~ onceivi~ble. B~ mear~ o~ the~;e ~ro~s bores uni~o~ low 1~ aahlev~d, atld clo~ging (~or exalnpll3 by blot)~l ~lots du~ to contao~. bekween t~l~ tlp c~:f the cantlu:la And the VRill wall, or m~chaniaal damage to the delicate, tapering Gannu1a tip, et~. ) aan be rel iably prev~nted .
Th~ inven-t:ion rela~s to all in~welli.n~ vein cann~l:La With a ca.r)rlul~
body aon~lst:i~g ~u~stant~ally of a pJ E~t,:.c oalln~ and a h~nd:l.e. and hav~ng an in-~e~nal piercing cannula provi~d with a matal c~annula (trocar) .
~ntrAv~nou~ ~n~ tion and in~ravenouE3 d~ip inEuE3ion ar~ now indisp~ ble in ~11 ~f ~di~a~ ~reatment. Their dhvelopmen~ wa~
accomplished in mElny E~m~ ep~ and over a lon~ period of time.
Mathods for phlebc~omy and Por madioation have long been kn~wn.
The discovery o~ blood oir~ulation ~ly ln the 17~h centur~
o~e~ted the anatomic phy~ologi~al b~ r~garding inf~sion and tran~fusion. Soo~ the ~i~9~ attempt~ a~ infusion were made, ~irst ~n ahilnal~ and la~er also in human beingE;, althou~h lnitially neither ~ny thqr~.peuti~ ~ffect nor an~r advanc~ment o~ knowledge were o~t~in~d. Sln~e tho r~a~on ~o~ the ini~lal fail~re~ ~ere pro~bly to be at~rlhuted primarily to ~p~ia conditions, th~
invention o~ th~ in~Qction ~yrl~ge in the l~th ~entury ~r~ opene~
the w~ ~o mod~rn in~ation ~herapy. How~v~r, a new chap~e~ in tr~ fu~ion ~oie~14e was b~un a f ter ~he dlaco~ery o~ blood groups at th~ begi~niny o~ ~hl~ ~entury, q~h~n the d~ai~i~e ba~es and technologi~ could be devQloped whic~l are l~rgely what they are today du~ ~o the ~t~m~lu~ ~ the t~o world war~ and the development of int~rnal madi~ine and ana~tha iolo~y. In the me~n~im~
intra~nou~ ~her~py ~or paranter~l m~dlc~tion and fo~ the replacem~ht o~ blood by tran~ ian or infusion hs~ become wide~p~ead.
All illne~es ~n which the m~dica~o~ i~ t~ a~t ~api~ly or ca~no~
be ad~ini~;tered in any other w~y arR ~ ndica~ions f or in~ravl3nou~
in~ection. P~ec~i~ely :ln t~o~nec:tlon wlth 'che lE~ttar i:ype oP c2lse~:, medlc~ on oVer a long period ~)f time is re~Uire~, so thE~t intravenou~ drip infu~ion ig u6ed in adm~ tsr~ ~g the indit~ated ''3 ~
mediaatlon~ In thl6 caee an lnd~r~lling vein c:annula i~; used, whose f~n~tion i~ t~ e ~escrihsd in det~il herewlth.
.~egardlee- of the l~ngth o~ tlme arld rat~ o:~ infu~ion, first A
~:uita~le ve;i n i~ ~:el~3ct~d . It i~ de~irable in the ca~;e o~ an exten~ed in~uE~ n ther~py ~lx~3t to sRleo~ vain~ loaal~ed a5 di~tally as po~ible, ~;o tllat i~ ~ny thrombo~i~ o~cura, more proximally located c~p~n V-3in~ aah be re~;ortad ~o . In ~ny r~a~e, veint3 ~d~ ac~nt to -~oint~ (wr~st~ bow~, etc. ) muElt be av~id~d hecau~e o'cherwls~
when mov~m~n~ or~u:rs th~3 ve~n may ~e in~ur~d or ~3ven punc~tu~ed no matt~r how the o~n~ul~ i~ f ixed in place . As the uE;e of in~ravenou3 ~luld trea~cment increases, a number o~ ~urther developmants of cannul~e h~ve oom~ o ~ge ln ~he last ~w ~cade~. ~nar~as~n~ pre~erence 18 enjoyed by indwelllng cannulae ~ pl~tlc, o~ whiah th~ BO~oalle~ raun~le~ (ragl~tered tradem~rk of ~ ~raun M~lsu~n ~G) is mo~t wid~ly use~.
~h~ known pla~tlc indw~lling v~in aahnUla COIl~i~t~ ~'ir9~ 0~ an inte~nal pl~rcln~ oannula tha ku~ular p~r~. o~ Whi~h ~0116is~ oE
m~tAl (~o-calle~ ~trooar"~, ~nto whi~h R coni~al~y te~lnilla~ing~
alo~ely fi~ing plA~tio tube is slipped. Th~ pla~tic tu~e is sllghtly shorter in l.ength thah the ~rocar an~ the tr~n~i~lon to th~ conioal part is made ~aple~s at the tip o~ the cannulA by pre~ise ~ach~ning, 6~ that, if it ls corre~tl~ halldled, any de~orma~ion o~ the oonical (pl~ ) tip of the c~nnula making the pehetrati~" of the ti~B di~ ult will b~ preven~ed.
Tha manipulatian o~ the k~own indwelling vain ~Rnnula is to be desoxlbed herewlth: After about l~2 to l cm o~ ~h~ ~anrlula has ~een lneer~ed into the lum~n of tha vein, the metal ~oaar i~
retracted to ~uch ~n ~xtent ~hat i~ tip is fully ~nside of the pla~ia ~annula. ~hu~ the ahamb~r at the ~nd of the plastio ~annul~ flll~ ~ith blood, ther~y permittlng lnspection of the locatiorl o~ the i~ldw~lling veLn c:~nnulA. Then the pla~ a~lnUla, t~ith t~le troc~r compl~tio~y ~h~ 21ed .~n lt, 18 adv~n~ed lnto th~
lumen all the w~y up ~o it~ handl~ w~ Le ~l~e v~in ls ~till ~ oke~l.
l'lli~ i~ th~ wely in wl~icll ~hR hletal t~p of th~ tronar iE3 pr~ven~ed ~rom injurinq the vein wall WhRn t~l~ indwell~ nq val~l oannulA i~
in6arted, l~ut the plastic ~e,nnul2. ret~.n~; thq n~ce~;Ary ~;ti~fne.sl~
50 as not t:o b~ k.i7)ke~l by the r~:is~an~e oP the ~)c1n to its ad~an~e. ~tnally, t~ indwellin~ vein canllul~ is ~ixed onto the skin by n~e~ dhe~3lv~ ~rip~ or tlle l.ike at t}le ~ontact WillC,~S
prc~vided on thq c~,nnula body, and the in~otion ~yringe o.r infusic~n s~stem i6 conlle~tecl to it.
A~ explained above, thQ ~cn~wn indwalling v~in ~anl~ula ha~ alroady bn~n v~2ry ~ar dev~loped ~gardlng lts U913~ However, even af~ter in~tall~tiotl ~oJnplicEitiorl~3 aRn dev~lop clu~ to th~a ~ac~ that reli~le fix~l:ion at the ~ o~ the ~atu~l aannula i~ aclliev~.d, anfl y~t ~he transitien betwQ~3n the cannul~ ch~mbMr and t~le mn-lth o~ t~ lfubiorl ~:ub~ e~3 no~ p~xmlt op~imum .eixati~n. Ev~n in the ~a~3~ o~ ~mall ~11d th~r~tore ~llo~t~e.~ i~d~elling vein canJ~ e, this portion oE th~ dw~llLng VQin ~s~nnula protrude~ o~l~ o~ ~he tad "tr1Anyle" (point o~ ~ntry - right aolltaot wing - lef~.
aon~aa~ wing) .~n prc-langatlan o~ thQ long axl~ of the cannula.
~pon an incau~ious .or unc~vnscliou~ movomerlt of the patier~t, wilile a3~eep for ~xampll3, it i~ e~e~ore ea~ily po~sible ~or t;his end of th~ ~a~n~lula tc) be dl~pl~.ced. q~h~ in~usion ~ub~ can conl1e loo6e from ~he indwell~ng vein c~nnula o~, due tc~ tll~ leverin~ aotion of thio protruding free end of thn canJ~ul~, injuri~A oan ooo-~r irl tho ~atunl point~ of entry or ln tha ~ nterior of t;he v~in ~
, It i~ theref~l3 t}l~ obj~3at o~ the invention to configur~ and 1~np~ove the abov~-de~cribed indw~lling vein canllula ~.o the.t the abo~e~mer~t:Lorled di~RdvAIlta~e~ wil~ be avo1ded, And that th~
indwell1ng vein ~annul~ will bo improv~ in 11~ en~i~ety. It i6 ~urtharmore de~l~ed to ~cili~ate the handlln~ o~ the indw~lling v~in cannula and imp~ove it~ oper~tlon wi~hout having ~o lo~e ~he lcnown adva~tage~. ~h~ indwelli~g vein c~nnula aacord~ hg to the invention, in wh~ch ~he ~bove-deAcrib~d ~b~t i~ achieved, is charaateri2ed ~l~stly, and es~ent~ally, b~ the ~act that the a~h~ula body is provide~ wi~h a flexu~ at the poln~ of attachment q~ the handle. ~y thi~ oon~iguration according to the in~ention it i6 brought about ~h~t movement~ ~ran~mit~e~ to the it)dwqllin~
vein ~annula by ~he ih~U~ion t~be can no lon~er be tra~ itt~d to ~he plastic cantul~ lyin~ wl~h~n ~h~ vei~ pecially, the indwelli~ vein c~nnula c~n no longer ~ct a~ a ri~id lever in the area b~tw~n th~ point of entry an~ the openin~ for re~ei~ing th~
injection syrin~ or in~u~ion tube, ~o ~ha~ ~he po~sibility qf injury ~a~ be rsliably for~all~d.
~he OOlnpunent~ re~erre~ to above ;~ w~ll as thosa clalm~d and thos~
d~aribed :I n ~he exampl~a~ of ~3~nbodimHnt, which ~re to ~e us~d in accorcl~nce with ~.he ~nv~ntion, elr~ not ~ub~eot to any ~3peoi~1 ~xohptioh~1 coTId~tion~ a~ to tll~1~ E3i~, corlfl~urR-t.~oJl, c:holc~ o~
h~tarial and technical c:ono~ption, ~o that the arit~ia o~ choLc~
k~own in kheir p~ ul~r ~ ap~ atio~l can be applied without li~nitat.~on, e~nd ~pe~ially t:h~3~r aro ulabl~ 1nd~pen~n~1y of Ohe anoth~ or th~ ~olutlc~l o~ tha problam or o~ ~t l~a:~t p~ t ~hereoP .
Th~r~ are ~lff~ t p4~sibili~i~s for ~mbodying ~nd developing thH
teaching o~ the inv~n~i~n; ~he~ora th~ ~ec~ndAry ola1ms on the one hand oa~ bo oon~ulted in thi~ r~gard, ~nd o~ ~he ~ther h~n~ so ~n the following ~xplanation of ~ preferred embo~1ment ~ the indwelling ~in cannul~ in ~oniunat~on wlth the draw~ng, wherein:
~ig. 1 ls a sid~ VieW o~ ~he indwelling ~ein oannula aoaord~n~ to th~ invent~on, in the assembled ~tate with tlp guard.
Flg. 2 i~ a ~lde view o~ th~ 1ndwelling v~in cannul~ according to the lnv~n~i~n in th~3 dis~ ;em~lqd stat~ with ~he tip guard remov~d .
Fig. 3 ~ sid~ vi~w o~ A part o~ ~he indw6a~.ling v~in cannula accordin~ to th~ invention ~rom Fi~ur~ 2.
Fig. 4 i~ ~ ~id~ ~riew o:~ a par~ of th~ in~wellin~ v~ln cannula e.ccor~llng ~o ~he invention ~xom F;l gur~ ~ .
Fi~ . 5 i~ R plan vl~w of th~ part of i:he indwE311ing ~r~in c: ~nnula a~cordlng ~ thq inven~lon ~rom Figure 4, aJld Flg. 6 1:3 an ~nl~.rg~d ~ec~lon of thQ ~.n~wc~ll.Ln~ v~ln ~an~lula ac~ordin~ to the inv~n~lorl, on the clrcl~3 in brok~3n lin~
~rom Fig~. ~ an~ 5.
F~ g. ~ ~3howl!3 th~ indw~llinç~ v~in c~nnula ~ccordln~ to t.ll~3 in~n-tion, indiaat~d as a whwl~ at 1~ in a oid~ vi~w. q'hH
indwelling v~in a~nnul~ 1, re~ularly a dlspt)~a~ annul~ in thi~ a~ nbl~d ~ e ~fore it:~ ~ir~t ~Jg~. For ~reat~r ~larlty, th~3 indwelllng va~n oannula 1 i~ shown in it~ .inflividual componan-t~;
in a ~id~ vi~w and plan v1~3w irl F~gure!3. 2 and 3, r~p~ctlvely.
~rl p~tiaular, th~3 indw~lling v~in s~.nnula 1 acct~rding t~o thQ
inventlon;l f~r~ ha~ ~he cannula l~o~.y 2 witl~ ndle aonn~ction 3 ~nd thQ plasti~ nnula 4 ~orm~3d ths~ Li]c~wlse ~ormed ther~on are the ~ixation wingE~ s which serve a~ support:ing and aclhering Ine~S16 ~or fa~ nin~ ~h~ indwe1ling vein c~nnul~ 1 on th~ skin.
Thelr und~r~i~e~; are o~ten provided with n~tahes in or~er better to b~3 ad~p~d ~o 'che ~hap~ o~ an arm ~ ~or ex~mpl~ .
s ~
PugllrQn 1 ~o 3 Purth~rmor~ nl~o~ At, 11~ t~ interior oE the cannula body 2 ma~ o~ pla~'cic~, ~here :16 an ln~ e car1nula e~uipp~d w~th a hollow me~al n~edl~, the ~;o-::alled "troc:ar" 7. ~he tip o~
the ~ro~a~ 7 iE~ bevel-ground, a~ it appe~; qultra c:learly ~rom ~igures 2 and 3. For ea~ier hand:llny, th~ p1erclng ln~ide cannul~
~ i~ e~uipp~l with a holding lu~ 8. rrhe inclw~lling vein Gannula 1 i~3 clc~;efl with a trocar cap ~ which i~ ~uc~h that, when ~h~ troa~r 7 i~ remo~recl, thin aap can A~e:o ~erv~ for s~lincJ t:he ,::annula body 2~ ~o~ that purpo~, nnc1 al~o, ol~ c~ou~E;e, to ancJc~tmnodatQ ~n injection E~yrlnge or ~rl infu~ion tuloe no~ E~hown, bo~h ~he cannul~
body 2 and ~hl3 in~id~ cannul~ ~ are made ho~.low cylin~ric~l at thei~ and r~motq ~rom ~he tip. L~ E:tly, it ~an b~ en i n Fl~6 .
and 3 that th~ indwellin~ ~ein ~annulae 1 are prov~d~d with tip uard~3 10 to protect again~;t i~jury and damagQ.
In accordnnce with th~ ih~ nti on the ar~d Df~ the c~Q~nnula body 2 remotQ ~r~m the tip :l~ providecl, a~ ~he p~ I nt o~ attachme!nt o~ the harldla 3, wi~h a ~.exure 1~, ~o that th~ in~eetion ~yrin~e c~r the end of the ln~u~ n tubo ~o lt~ngar n~eds t~o be ln line wi~h ~he lollg axi~ of the oannula (not et3p~3~ia~y indica~cl in ~he drawing~.
The operatic:n o~ thi~ Elexu~e 11, which 1Ej known ~n other ~ields of app~ tlon, can he cle~rly un~rstoo~ ~rom Fi~ures ~ and 5 whlch show the ~annula body 2 in a ~ld~ vi~w and plan Vir3W, respeativsly. ~ccordln0 to ~ ~urther teacl~ing of the inventlon, the ~l~xure ~1 is of ~uch a n~u~ ~nd l~lg~.h that it p~r~its bending over so degraes~ In thlE~ manner, ~c1r example, ~n in~usion tube ~an be attach~ to the indw~lling vein a~nnula 1 perpendir~ula~
to th~ ~rm (~nd ~l~noe i~lso perpendlculAr -to t}l~ v~ln) . Po~s;i ble move~nentE; c~f the infusion tube are transmitted le~s to the cannula bt~dy 2 ~hAn in ~he case o~ conv~n~ional in~we~lin~ veln cannul~e.
In ~rthf~r c~nv~loEInl~nt oi~ t:h~ inventic~n, ~h~ ~r~l~ body ~ i~
p~ovid~l with ~ ~inyer plate 1~ at the han~le 3. It 1~ ~pec!i~lly Advanta~eous i~, accor~lng t:o ~ furthe~ ~e~ g of the inven~ion, th~ fin~ pl~ta 12, adapted to the al~atomy o~ the fin~3r pad af an ~ndex Pinger, i~ ~urved in ~h~pe ~nd~t~r providod wit~h nubs 13 tc~ prevent any glippin~ of the ~ir~e~ C~h the b~nnula bc~dy 2. Th~
above-àe~cribed confi~ur2l~ion p~lnitE; ~peo~all~ a3aBy hzln~lincJ c?f the indwelling vein cannula 1 ~cordin~ to the inven~io3~ ince it ce,n ba ~uid~d aecurely and neve~hele~ en~itively witll th~e~
finge~, the in~ex PihgRr lylr~g orl thR 1~ger platR 12, and the thumb and mi~dle f~n~r laterally gripping the holding lug 8 oP the in~ide pier~ing o~nnula 6~ Here again can ~9 s~en the speal~l a~vantage of th~ previously de~cribed con~igUration o~ the indwe~lin~ vei~ cannul~ 1 aoo~ding to ~ inv~ntio~, becau~e ~aaeration of the ~ei~ ls a very ~requent oomplioatio~ o~
phl~b~tomy, though in ~08t CaSeg lt ls harml~fifi. on~ i~ taught to 'Ihold the indwelling ~in oannula llghtly,i' so a~ ~o ~el ~h~
~e~istance o~ the vein wall, and to ~-lid~ th~ in~ect~on neeclle ~
~en~ltively ~ po~ibl~, ~o a~ ~o ~a a~l~ to sot it lmm~di.ately when blood e~ter~ the cannul~. Thls recomm~nclatio~ uppor~ed by the de~ign de~aribed ~bo~e~
~t i~ not ~hown t~at in~walling vein cannulae ~e often provid~d with two ports, ~r exampl~ to permi~ the cannula ~v be Plushed out. These a~ us~ally provided ~t ~he point of attachmen-t of the cannula ~ody at thq ~ixation wing~. ~h~re~ore it i~ de~irabl~
th~t, ln ~he ca~e o~ indwellin~ vein cannulAe in accordanç~ wlth the invention/ the ~inger plate ~imult~n~ously form the cover o~
the .second port.
L~tly, an ~ddlti4nal ~eachin~ o~ the inventlon consists in pxovidln~ ~t leAst one cros~ bore 14 ~t its tlp. For easie~
compr~hen~ion, the area with~n ~he brokell circle K of Fl~rss 3 ti `J ~
and 5 ;i.B ~hown ~nlarged in Fig. ~. Xn th~ ~3mhodimen~ own, and to ~his ~xtent pre~err~d, thQ plaE~tlc aannula ~ ~;hown only a~ its tip has ~le cro~ bor~ 14, bllt conf igurAt~ion~ wi1:h ~everal cros~
bor~ are a~ onceivi~ble. B~ mear~ o~ the~;e ~ro~s bores uni~o~ low 1~ aahlev~d, atld clo~ging (~or exalnpll3 by blot)~l ~lots du~ to contao~. bekween t~l~ tlp c~:f the cantlu:la And the VRill wall, or m~chaniaal damage to the delicate, tapering Gannu1a tip, et~. ) aan be rel iably prev~nted .
Claims (7)
1. Indwelling vein cannula with a cannula body consisting essentially of a plastic cannula and a handle and with a piercing inside cannula having a metal cannula (trocar), characterized in that the cannula body (2) is provided at the handle (3) with a flexure (11).
2. Indwelling vein cannula according to claim 1, characterized in that the flexure (11) is so configured in its nature and length that flexing up to 90° is made possible.
3. Indwelling vein cannula according to claim 1 or 2, characterized in that the cannula body (2) is provided with a finger plate (12) at the handle.
4. Indwelling vein cannula according to claim 3, characterized in that the finger plate (12), adapted to the anatomy of a finger pad, is rounded.
5. Indwelling vein cannula according to claim 3 or 4, characterized in that nubs (13) are provided on the finger plates (12).
6. Indwelling vein cannula according to any one of claims 3 to 5, characterized in that the finger plate (12) forms the cover of a second port.
7. Indwelling vein cannula according to any one of claims 1 to 6, characterized in that the plastic cannula (4) has at least one cross bore (14) at its tip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4113045.6 | 1991-04-22 | ||
| DE19914113045 DE4113045C1 (en) | 1991-04-22 | 1991-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2085978A1 true CA2085978A1 (en) | 1992-10-23 |
Family
ID=6430075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2085978 Abandoned CA2085978A1 (en) | 1991-04-22 | 1992-04-21 | Indwelling vein cannula |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0535204A1 (en) |
| JP (1) | JPH05509254A (en) |
| AU (1) | AU1648792A (en) |
| CA (1) | CA2085978A1 (en) |
| DE (1) | DE4113045C1 (en) |
| WO (1) | WO1992018193A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8105311B2 (en) | 2002-12-11 | 2012-01-31 | Abbott Laboratories Vascular Enterprises Limited | Catheter with bendable section |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4499893A (en) * | 1992-09-08 | 1994-03-17 | Critikon, Inc. | Flexible catheter |
| ATE156025T1 (en) * | 1992-11-24 | 1997-08-15 | Braun Melsungen Ag | CATHETERIZATION UNIT |
| EP0792655A3 (en) * | 1996-02-29 | 1998-01-28 | Becton, Dickinson and Company | Catheter with improved extension tube |
| EP0824921A1 (en) * | 1996-08-20 | 1998-02-25 | Smiths Industries Public Limited Company | Medical filter |
| US7070579B1 (en) | 1998-04-30 | 2006-07-04 | Medtronic, Inc. | Device used to connect an external ventricular drainage catheter |
| DE102004015971B4 (en) * | 2004-04-01 | 2006-07-06 | Forschungszentrum Karlsruhe Gmbh | Remote-controlled cannula guide |
| US7922696B2 (en) | 2007-01-24 | 2011-04-12 | Access Scientific, Inc. | Access device |
| AU2008242650A1 (en) | 2007-04-18 | 2008-10-30 | Access Scientific, Inc. | Access device |
| IT1398268B1 (en) | 2009-03-10 | 2013-02-22 | Prigen Srl | GLYCEROSOMES AND THEIR USE IN PHARMACEUTICAL AND COSMETIC PREPARATIONS FOR TOPICAL USE |
| WO2011097639A2 (en) | 2010-02-08 | 2011-08-11 | Access Scientific, Inc. | Access device |
| EP2484402A3 (en) * | 2011-02-08 | 2012-10-03 | Region Nordjylland, Aalborg Sygehus | A venflon component |
| US9566087B2 (en) | 2013-03-15 | 2017-02-14 | Access Scientific, Llc | Vascular access device |
| WO2016176065A1 (en) | 2015-04-30 | 2016-11-03 | Access Scientific, Llc | Vascular access device |
| US10569059B2 (en) | 2018-03-01 | 2020-02-25 | Asspv, Llc | Guidewire retention device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3794026A (en) * | 1970-07-29 | 1974-02-26 | H Jacobs | Ventilating apparatus embodying selective volume or pressure operation and catheter means for use therewith |
| BE795185A (en) * | 1972-02-10 | 1973-05-29 | Avon Medicals | IMPROVEMENTS TO INTRAVENOUS INJECTION NEEDLE DEVICES |
| FR2242114A1 (en) * | 1973-08-31 | 1975-03-28 | Mpl Inc | Injection needle assembly - with bandage acting as a handle and as a cover for the injection puncture |
| CH596843A5 (en) * | 1976-02-12 | 1978-03-31 | Intermedicat Gmbh | |
| DE2609112C3 (en) * | 1976-03-05 | 1979-02-15 | B. Braun Melsungen Ag, 3508 Melsungen | Catheter hub |
| DE3105437C2 (en) * | 1981-02-14 | 1986-06-19 | VYGON - Erzeugnisse für Medizin und Chirurgie - GmbH und Co KG, 5100 Aachen | IV cannula |
| US4713057A (en) * | 1984-02-27 | 1987-12-15 | Medical College Of Ohio | Mechanical assist device for inserting catheters |
-
1991
- 1991-04-22 DE DE19914113045 patent/DE4113045C1/de not_active Expired - Lifetime
-
1992
- 1992-04-21 JP JP50848392A patent/JPH05509254A/en active Pending
- 1992-04-21 AU AU16487/92A patent/AU1648792A/en not_active Abandoned
- 1992-04-21 WO PCT/EP1992/000879 patent/WO1992018193A1/en not_active Application Discontinuation
- 1992-04-21 EP EP19920909185 patent/EP0535204A1/en not_active Withdrawn
- 1992-04-21 CA CA 2085978 patent/CA2085978A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8105311B2 (en) | 2002-12-11 | 2012-01-31 | Abbott Laboratories Vascular Enterprises Limited | Catheter with bendable section |
| US8827950B2 (en) | 2002-12-11 | 2014-09-09 | Abbott Laboratories Vascular Enterprises Limited | Catheter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4113045C1 (en) | 1992-07-16 |
| EP0535204A1 (en) | 1993-04-07 |
| AU1648792A (en) | 1992-11-17 |
| JPH05509254A (en) | 1993-12-22 |
| WO1992018193A1 (en) | 1992-10-29 |
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