CA2181305C - Apparatus for collecting a mid-stream urine sample - Google Patents
Apparatus for collecting a mid-stream urine sample Download PDFInfo
- Publication number
- CA2181305C CA2181305C CA 2181305 CA2181305A CA2181305C CA 2181305 C CA2181305 C CA 2181305C CA 2181305 CA2181305 CA 2181305 CA 2181305 A CA2181305 A CA 2181305A CA 2181305 C CA2181305 C CA 2181305C
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- tubular receptacle
- urine
- funnel
- remote end
- valve
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- Expired - Lifetime
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- 210000002700 urine Anatomy 0.000 title claims abstract description 74
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 244000005700 microbiome Species 0.000 description 4
- 210000003734 kidney Anatomy 0.000 description 2
- 101100126169 Escherichia coli (strain K12) intF gene Proteins 0.000 description 1
- 241000257303 Hymenoptera Species 0.000 description 1
- 101100536883 Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513) thi5 gene Proteins 0.000 description 1
- 101100000209 Mus musculus Orm3 gene Proteins 0.000 description 1
- UEJYSALTSUZXFV-SRVKXCTJSA-N Rigin Chemical compound NCC(=O)N[C@@H](CCC(N)=O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CCCN=C(N)N)C(O)=O UEJYSALTSUZXFV-SRVKXCTJSA-N 0.000 description 1
- 101100240664 Schizosaccharomyces pombe (strain 972 / ATCC 24843) nmt1 gene Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 108010091078 rigin Proteins 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003708 urethra Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61B10/0045—Devices for taking samples of body liquids
- A61B10/007—Devices for taking samples of body liquids for taking urine samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61B10/0096—Casings for storing test samples
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Hematology (AREA)
- Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
An apparatus for collecting a mid-stream urine sample includes a funnel having a wide end and a narrow end. The funnel is supported over a specimen container with the narrow end of the funnel at a mouth of the specimen container. A
tubular receptacle depends from and is in fluid communication with the narrow end of the funnel. The tubular receptacle has at least one radial overflow passage adjacent the narrow end of the funnel. Once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the radial overflow passage.
tubular receptacle depends from and is in fluid communication with the narrow end of the funnel. The tubular receptacle has at least one radial overflow passage adjacent the narrow end of the funnel. Once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the radial overflow passage.
Description
~ ~ 18130~
TITLE OF THE Lhvr.~.LLI : ~
an apparatus for collecting a mid-stream urine sample NAMES OF lhv~n~Jk8:
Thuraiayah Vinay~ Lhy Edmond Charleton FIEI.D OF TIIE lhv~~
The present invention relates to an apparatus for 15 collecting a midstream urine sample.
P"' OF THE lhv~l~ 1l It is generally acc~pted by medical practitioners that urine samples should be taken midstream, as the forestream of urine may be contaminatecl by micro-organisms. The urethral opening is very close to the anal opening, which is full of micro-organisms. These micro-organisms tend to spread in the pelvic region. It is normal for these mi~ /Lyanisms to find their way through the urethral opening into the urethra, resulting in c~t~min~tioll of the forestream urine. Midstream urine, which comes from the bladder or the kidney, gives a more accurate indication of whether either the bladder or the kidney are infected by micro-organisms. United States Patents 3,8g4,845 and 3,982,898 disclose apparatus for collecting midstream urine samples. 'rhese apparatus include a forestream collection and isolation arrangement.
At present patients are askedl to provide urine samples in sterile cups with lids. 'rhese cups are low cost, disposable items. Although United States Patents 3,894,845 and 3,982,898 ~ 218130~
provide a manner of coll~cting midstream urine samples, they are complex and, con~ n~ly, expensive apparatus.
5 SUI~MARY OF THE l~vc,~
What is required is a less complex apparatus for collecting a mid-stream urine sample, According to the present invention there is provided an apparatus for collecting a mid-stream urine sample. A funnel is provided having a wide end and a narrow end. Means is provided for 3upporting the funn21 over a spo~ container with the narrow end of t~le funnel at a mouth of the specimen 15 cnn~o;n~r. A tubular receptacle depends from and i8 in fluid c, ; ~ ation with the narrow end of the f unnel . The tubular receptacle has at least one radial overflow passage adjacent the narrow end of the funnel. Once the tubular receptacle is filled with urine, any further urine entering the tubular 20 receptacle overflows through the at least one radial overflow passage .
With the apparatus, as described above, no urine enters the specimen container until the tubular receptacle has been 25 filled by a fl~L~ L}~aLIL. I~nce the tubular receptacle has been filled, midstream urine overflows from the tubular receptacle into the specimen c~ntA; nPr. The apparatus is simple enough in construction that it can, if desired, be made ~i ~pos~hl e along with the 3Fe~ ;~ container.
Although bf-n~f;ri~l results may be obtained through the use of the apparatus, as ~ rih~l above, the size of tubular receptacle that can fit into a disposable cup which i3 typically used as a specimen container is ~LL~ ly limited.
35 The tubular receptacle must have sufficient capacity to a~;c 'ote the forestream urine, and yet must be of a size that will fit within the sp~ container. 13ven more ~ 218~30~
b~n~f;~ re3ult3 are, 1 herefore, obtained when the tubular receptacle is f l F~xi h i e . The f l ~x; hl e tubular receptacle bends to conf orm to the liquid receiving cavity of the specimen c~nt~inF-r. In a 3mall 3pe~; container, the fl~X;hl~ tubular 5 receptacle a3sume3 a "J ' 3hape.
Although b~n~-f; ~ l re3ult3 may be obtained through the use of the apparatu3, a3 de3cribed above, air tends to become t ~ aL ily trapped by t11e entry of urine into the specimen lO container. Thi3 air e3capes in the form of air bubbles which float up through the UriLIe. Unfortunately, a3 air bubbles ri3e to the surface of the urlne and burst, an inter-mixing of the forestream urine and thG mid3tream urine can occur. E~ven more benf~fir~;Al result3 ~lay, therefore, be obtained when the 15 tubular receptacle f orm3 a loop with a remote end of the tubular receptacle being in fluid, ;r~tion with an upper throat of the tubular receptacle. With a loop configuration, the entry of urine forcefi air out of the remote end of the tubular receptacle. A~i the remote end of the tubular 20 receptacle i3 in fluid n;f ation with the upper throat, the air exits without pas3ing through the urine.
Although b~ri~f;~;~1 resultfi may be obtained through the use of the apparatu3, as ~1escribed above, unless measures are 25 taken to isolate the fores1 ream urine from the mid3tream urine, it i3 possible that some intF~ r; nq of the f orestream and midstream may occur. Even more b~nef;c;;~1 results may, theref ore, be obtained when a movable valve member i8 positioned at the remote end of the tubular receptacle. ~he 30 valve is movable between aLI open position in the remote end and a closed position projecting from the remote end to block the upper throat. The valve i~i responsive to liquid pre3sure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the 35 open position to the clo~ed position thereby preventing the entry of further urine into the tubular receptacle.
21~05 There are a number of further r~f i n ~ that can ~e added to improve the performance of the apparatus ~lr~ ri hr~d The pre3ence of air in the specimen container restricts the free entry of liquid into the 8pe~i c~rt~inf-r. In order to 5 address this problem, it is preferred that the lid have an air release port 80 that the air can readily be displaced.
The evacuation of air from the tubular receptacle can, similarly, be; - ~Jv. d by providing an air evacuation passage lO that extends from the remote end of the tubular receptacle to the at least one radial overflow passage.
Should the valve me~ber become positioned midway between the open and the closed position, the entry of urine into the 15 tubular receptacle will }~e restricted. In order to addres3 this problem it is preferred that the valve member have a wedge-like 3ealing 3urf ace . When liquid 3trike3 thi3 wedge-like 3urface upon entry i~to the tubular receptacle, it tend3 to push the valve member back into the open po3ition until a 20 greater liquid pre3sure is exerted upon the valve member.
An alternative approach to the problem of valve positioning is to provide the remote end of the tubular receptacle with inwardly projecting stop3. A weight is then 25 attached to the movable valve member to pull the valve member into the open position re3ting again3t the 3top3, until the bia3ing force of the weight is ~V~LI.:~ by liquid ~ 8:~U1-:.
There are al~o alterllative valve configurations that can 30 be used. For example, movable valve member can be made of several ~ ~ Ls. The~3e ,~ 5 can include a liquid responsive plunger positioned in the remote end of the tubular receptacle, a weighted ball valve disposed in the remote end of the tubular receptacle downstream of the liquid responsive 35 plunger and a ball valve seat positioned in the upper throat of the tubular receptacle below a point of intersection with the remote end. With such a configuration, liquid pre~sure upon the liquid responsive plunger causes the weighted ball valve to be pushed from the remote end of the tubular receptacle falling onto the ball valve seat.
BRIEF ~ OF THE nR~WTNGS
These and other featllres of the invention will become more 10 apparent from the following description in which reference i3 made to the ~rp~.n~ dra~rings, wherein:
FIGURE 1 is a side elevation, in section, of a first : ~~nrl; L of an apparatus for collecting a mid3tream urine sample .
FIGURE 2 is a 3ide elevation, in section, of a 3econd -'; L of an apparatus for collecting a midstream urine sample .
FIGURE 3 is a side elevation, in section, of a third ' - ~;~ 1 of an apparatus for collecting a midstream urine sample, with a valve member in an open position.
FIGURE 4 is a side elevation, in section, of the third ' - ~; l illustrated in FIGURE 3, with the valve member in a closed position.
FIGURE 5 is a side elevation, in section, of a fir3t ~;f;f~d ver3ion of the t~lird ~rl; 1 illustrated in FIGURE
3.
FIGURE 6 is a side elevation, in section, of a 3econd l;f;f~d ver3ion of the t~lird ofl; L illustrated in FIGURE
3.
FIGURE 7 i3 a side elevation, in section, of a fourth ~ --7;r L of an apparatu3 for collecting a midstream urine sample, with a ';fil~d form of valve member.
n~r~ TT P~n D~ OF T~E l ~r r n Four preferred ~__l; ts of apparatus for collecting a midstream urine samples, g~n~r~lly identified by reference ~813~
o numer~ 10, 12, 14, and 15 respectively, will now be ~l~q~rlhc~d with reference to FIGURES 1 through 7. First ~ ; L 10 is illustrated in FIGURE 1. Second ~ rl i L 12 i3 illustrated in FIGURE 2. Third: I; L 14 is illustrated in FIGURES 3 5 and 4, with variations il:Lustrated in FIGURES 5 and 6. Fourth ' ~orl i L 15 is illu3trated in FIGURE 7 .
Referring to FIGURE 1, fir3t: o-li L 10 inr~ q a funnel 16 is provided having a wide end 18 and a narrow end 20.
10 Funnel 16 is incorporated into a lid 22 which f its onto a spPci container 24. As will hereinafter be further described, it is preferred that lid 22 have an air release port 48. Lid 22 when placed onto qpe~ i container 24 serves as the means for supporting funnel 16 over specimen container 24.
15 Lid 22 positions funnel 1~; with narrow end 20 at a mouth 26 of a liquid receiving cavit.y 28 of specimen container 24. A
tubular receptacle 30 depends from and i9 in fluid r~ tion with narrow end 20 of funnel 16. Tubular receptacle 30 has radial overflow passages 32 adjacent narrow 20 end 20 of funnel I6.
The use and operation of first: '~o~l; L 10 will now be ~ q~r;h-~d with reference to FIGURE 1. The lid that normally comes with specimen container 24 is removed and retained for 25 future use. First: ,-~1; L 10 is then placed onto specimen container 24, in substitution to the ~rigin;~l lid, by positioning lid 22 over mouth 26 of liquid receiving cavity 28.
The patient is instructed to urinate into wide end 18 of funnel 16. Urine enters wide end 18 of funnel 16, passing through 30 narrow end 20 and into tubular receptacle 30. Once tubular receptacle 30 is filled with forestream urine, any further urine entering tubular receptacle 30 overflows through radial overflow ~qqa~ 32 into liquid receiving cavity 28 of specimen container 24. Once the patient has finiqhed providing 35 his urine sample, tubu:lar receptacle 30 containing the forestream urine i~ tli qposF~d of . The lid that comes with sp~ci container 24 is then uged to 8eal 8pe~ i container 218130~
24 and the ~ealed contai:ner i8 forwarded to a laboratory for analysi~. It is preferred that tubular receptacle 30 be made of a f lexible material . This enables f lexible tubular receptacle to bend fit within the ,1; ~i nn~ of liquid 5 receiving cavity 28. It will be noted that, in doing 80, flF~rihle tubular receptacle 30 agsumes a '-J-- shape.
Referring to FIGURE 2, most of the ~ s of second embodiment 12 are identical to those in first: ~-o~li L 10 and 10 have been identified ~Tith the same reference r~
E~owever, second ~ li L 12 in~ a path by means of which air can escape from tubular receptacle 30. In second ~ 'i L 12, tubular receptacle 30 in~ a loop, generally identified by reference numeral 34. 100p 34 is formed by 15 having a remote end 36 of tubular receptacle 30 in fluid c~ ation with an upper throat 38 of tubular receptacle 30.
The use and operation of ~econd G ~ - ~i lt 12 will now be described with reference to FIGURE: 2. In general the use and 20 operation of second: ~ 'i L 12 iB identical to that of fir3t : ~ -1; L 10. Ilowever, with the loop configuration described, the entry of urine force~ air out of remote end 36 of tubular receptacle 30. As remote end 36 is in fluid communication with upper throat 38, the air exits from tubular receptacle 30 25 without having to pass through the accumulated forestream urine . This helps prevent air bubbles f rom agitating the urine, which could result in an int~rm;~r;n-J of some o~ the f orestream urine with the mid3tream urine entering tubular receptacle 30 and overflo~ing tubular receptacle 30 overflowing 30 into liquid receiving cavity 28 of specimen container 24 through radial overflow passages 32.
Referring to FIGURE~g 3 and 4, most of the elements of 35 third embodiment 14 are identical to those in first: - ~; L
10 and second: ~ ~~;- L 12; they have been identified with the same reference numerals. Elowever, third embodiment 14 includes 218130~
means for ;YO1At;ng fore~tream urine from the midstream urine 30 that no ; nt~ r; n~ can possibly occur . A movable valve member 40 is po3itioned a.t remote end 36 of tubular receptacle 30. Valve 40 is movable between an open position illustrated 5 in FIGURE 3 and a closed position illustrated in FIGURE 4.
Referring to FIGUEIE 3, in the open position valve member 40 is positioned in remote end 36. Inwardly projecting stop~ 41 and 42. Stops 41 are forward stops that limit r v~ L in the closed position. Valve member 40 i8 preferably con~tructed 10 with an enlarged head pc)rtion 43 and an elongate projecting portion 46. Projecting portion 46 fits between forward stops 41. Forward stops 41 perform their intended function by r~n~ ; n~ enlarged head portion 43 . Stops 42 are rezlrward stops. They are poYitioned at remote end 36 of tubular 15 receptacle 30 to prevent valve member 40 from falling into loop 34 when in the open position. They also engage head portion 43. Referring to FIGUR~ g, in the closed position valve member 40 projects from remote end 36 to block upper throat 38. In order to improve the sealing cArAhi 1 ity of valve member 40, 20 upper throat 38 has been - -'i f i ~1 to include a valve seat 44 which receives projecting portion 46 of valve member 40.
The use and operation of third: - 1; L 14 will now be described with reference to FIGURES 3 and 4. In general, the 25 use and operation of third ' - 1; L 14 is identical to that of ~econd: o~3i~~ L 12. Although valve member 40 is positioned at remote enc~ 36, air is able to pass by valve member 40 to escape into upper throat 38. Valve member 40 is responsive to liquid pressure. A8 urine reaches remote end 36 30 of tubular receptacle 30, the urine exerts pressure upon valve member 40 to move it from the open position, illustrated in FIGURE 3, to the closed position, illustrated in FIGURE 4.
Once valve member 40 is in the closed position, the forestream urine is isolated. Midstream urine entering tubular receptacle 35 30 overflows into liquid receiving cavity 28 of 8pe~ i c~ntA;n~r 24 through radial overflow passages 32.
g Referring to PIGURE~; 5 and 6, a number of r~-f;~ L8 that can be added to improve the per_ormance of third ~ i L 14 will now be deJ3cribed. T~he pre~ence of air in liquid receiving cavity 28 restrict3 the ~ree entry of liquid into spe-;
5 container 24. In order to address this problem, it iB
preferred that lid 22 have an air release port 48 so that the air can readily be displ;~ced.
The evacuation of ,~ir from tubular receptacle 30 can, lO similarly, be improved by providing an air evacuation passage 50 that extends from remote end 36 of tubular receptacle 30 to one of radial overflow passages 32. It should be noted that air evacuation passage 50 i5 blocked by valve member 40, when valve member 40 i8 in the closed position.
Should valve member 40 become po~itioned midway between the open and the closed po3ition, the entry of urine into tubular receptacle 30 will be restricted. Referring to FIGURE
5, in order to address this problem it is preferred that valve 20 member 40 have a wedge-like sealing 3urface 52. When liquid strikes wedge-like sealirlg surface 52 upon entry into tubular receptacle 30, it tends to push valve member 40 back into the open position. Eventually, as tubular receptacle fills with urine, sufficient pressure is exerted by the urine upon valve 25 member 40 to push it intcl the closed position.
Referring to FIGURE ti, there i8 illustrated an alternative approach to the problem of positioning valve member 40. A
weight 54 is attached to movable valve member 40 to pull valve 30 member 40 into the open position resting against rearward stops 42. As tubular receptacle 30 becomes filled with urine, the biasing force of weight 54 is ~vel~ by liquid pressure to move valve member 40 into the closed position.
Referring to FIGURE 7, there is illustrated an alternative valve configuration 15. In this ccnfi~llration, movable valve member 40 is made from several interacting ~ P~ts. These _ _ _ _ _ _ _ _ _ .. . . . .. .. . . . .. ... ... ... . .
c ~ Ants can include a liquid responsive plunger 56, a weighted ball 58 and a ball valve seat 60. 1iquid responsive plunger 56 is po3itioned in remote end 36 of tubular receptacle 30. Weighted ball 58 is disposed in remote end 36 of tubular 5 receptacle 30, downstream of liquid responsive plunger 56.
Ball valve 3eat 60 is positioned in upper throat 38 of tubular receptacle 30 below a point of intersection with remote end 36.
With such a c/~nf; gllration~ liquid pressure upon liquid reA,ponsive plunger 56 cauA,es weighted ball 58 to be pushed from lO remote end 36 of tubular ~-eceptacle 30 falling onto ball valve seat 60. With weighted ball 58 positioned on ball valve seat 60, the forestream urine is isolated from the midstream urine.
Forward stops 41 are e3sential in this application to limit v~ 1 of plunger 56.
FIGURES 5 through '7 all illustrate loop 34 with two connective ~Aollrlin~s 62 and 64. The purpose of connective couplings 62 and 64 is to enable the size of loop 34 to be _Yp:~n-l~d as may be required to provide sufficient capacity.
20 Paediatric urine samples are much smaller then adult ~amples.
Elence, the volume of fore~itream urine that must be captured is much less.
It will be apparent to one skilled in the art that 25 ~; f;,A~l-;on r~ may be made to the illustrated: ~ ~.1; r 1, without departing f rom the spirit and scope of the invention as hereinafter defined in the Claims.
TITLE OF THE Lhvr.~.LLI : ~
an apparatus for collecting a mid-stream urine sample NAMES OF lhv~n~Jk8:
Thuraiayah Vinay~ Lhy Edmond Charleton FIEI.D OF TIIE lhv~~
The present invention relates to an apparatus for 15 collecting a midstream urine sample.
P"' OF THE lhv~l~ 1l It is generally acc~pted by medical practitioners that urine samples should be taken midstream, as the forestream of urine may be contaminatecl by micro-organisms. The urethral opening is very close to the anal opening, which is full of micro-organisms. These micro-organisms tend to spread in the pelvic region. It is normal for these mi~ /Lyanisms to find their way through the urethral opening into the urethra, resulting in c~t~min~tioll of the forestream urine. Midstream urine, which comes from the bladder or the kidney, gives a more accurate indication of whether either the bladder or the kidney are infected by micro-organisms. United States Patents 3,8g4,845 and 3,982,898 disclose apparatus for collecting midstream urine samples. 'rhese apparatus include a forestream collection and isolation arrangement.
At present patients are askedl to provide urine samples in sterile cups with lids. 'rhese cups are low cost, disposable items. Although United States Patents 3,894,845 and 3,982,898 ~ 218130~
provide a manner of coll~cting midstream urine samples, they are complex and, con~ n~ly, expensive apparatus.
5 SUI~MARY OF THE l~vc,~
What is required is a less complex apparatus for collecting a mid-stream urine sample, According to the present invention there is provided an apparatus for collecting a mid-stream urine sample. A funnel is provided having a wide end and a narrow end. Means is provided for 3upporting the funn21 over a spo~ container with the narrow end of t~le funnel at a mouth of the specimen 15 cnn~o;n~r. A tubular receptacle depends from and i8 in fluid c, ; ~ ation with the narrow end of the f unnel . The tubular receptacle has at least one radial overflow passage adjacent the narrow end of the funnel. Once the tubular receptacle is filled with urine, any further urine entering the tubular 20 receptacle overflows through the at least one radial overflow passage .
With the apparatus, as described above, no urine enters the specimen container until the tubular receptacle has been 25 filled by a fl~L~ L}~aLIL. I~nce the tubular receptacle has been filled, midstream urine overflows from the tubular receptacle into the specimen c~ntA; nPr. The apparatus is simple enough in construction that it can, if desired, be made ~i ~pos~hl e along with the 3Fe~ ;~ container.
Although bf-n~f;ri~l results may be obtained through the use of the apparatus, as ~ rih~l above, the size of tubular receptacle that can fit into a disposable cup which i3 typically used as a specimen container is ~LL~ ly limited.
35 The tubular receptacle must have sufficient capacity to a~;c 'ote the forestream urine, and yet must be of a size that will fit within the sp~ container. 13ven more ~ 218~30~
b~n~f;~ re3ult3 are, 1 herefore, obtained when the tubular receptacle is f l F~xi h i e . The f l ~x; hl e tubular receptacle bends to conf orm to the liquid receiving cavity of the specimen c~nt~inF-r. In a 3mall 3pe~; container, the fl~X;hl~ tubular 5 receptacle a3sume3 a "J ' 3hape.
Although b~n~-f; ~ l re3ult3 may be obtained through the use of the apparatu3, a3 de3cribed above, air tends to become t ~ aL ily trapped by t11e entry of urine into the specimen lO container. Thi3 air e3capes in the form of air bubbles which float up through the UriLIe. Unfortunately, a3 air bubbles ri3e to the surface of the urlne and burst, an inter-mixing of the forestream urine and thG mid3tream urine can occur. E~ven more benf~fir~;Al result3 ~lay, therefore, be obtained when the 15 tubular receptacle f orm3 a loop with a remote end of the tubular receptacle being in fluid, ;r~tion with an upper throat of the tubular receptacle. With a loop configuration, the entry of urine forcefi air out of the remote end of the tubular receptacle. A~i the remote end of the tubular 20 receptacle i3 in fluid n;f ation with the upper throat, the air exits without pas3ing through the urine.
Although b~ri~f;~;~1 resultfi may be obtained through the use of the apparatu3, as ~1escribed above, unless measures are 25 taken to isolate the fores1 ream urine from the mid3tream urine, it i3 possible that some intF~ r; nq of the f orestream and midstream may occur. Even more b~nef;c;;~1 results may, theref ore, be obtained when a movable valve member i8 positioned at the remote end of the tubular receptacle. ~he 30 valve is movable between aLI open position in the remote end and a closed position projecting from the remote end to block the upper throat. The valve i~i responsive to liquid pre3sure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the 35 open position to the clo~ed position thereby preventing the entry of further urine into the tubular receptacle.
21~05 There are a number of further r~f i n ~ that can ~e added to improve the performance of the apparatus ~lr~ ri hr~d The pre3ence of air in the specimen container restricts the free entry of liquid into the 8pe~i c~rt~inf-r. In order to 5 address this problem, it is preferred that the lid have an air release port 80 that the air can readily be displaced.
The evacuation of air from the tubular receptacle can, similarly, be; - ~Jv. d by providing an air evacuation passage lO that extends from the remote end of the tubular receptacle to the at least one radial overflow passage.
Should the valve me~ber become positioned midway between the open and the closed position, the entry of urine into the 15 tubular receptacle will }~e restricted. In order to addres3 this problem it is preferred that the valve member have a wedge-like 3ealing 3urf ace . When liquid 3trike3 thi3 wedge-like 3urface upon entry i~to the tubular receptacle, it tend3 to push the valve member back into the open po3ition until a 20 greater liquid pre3sure is exerted upon the valve member.
An alternative approach to the problem of valve positioning is to provide the remote end of the tubular receptacle with inwardly projecting stop3. A weight is then 25 attached to the movable valve member to pull the valve member into the open position re3ting again3t the 3top3, until the bia3ing force of the weight is ~V~LI.:~ by liquid ~ 8:~U1-:.
There are al~o alterllative valve configurations that can 30 be used. For example, movable valve member can be made of several ~ ~ Ls. The~3e ,~ 5 can include a liquid responsive plunger positioned in the remote end of the tubular receptacle, a weighted ball valve disposed in the remote end of the tubular receptacle downstream of the liquid responsive 35 plunger and a ball valve seat positioned in the upper throat of the tubular receptacle below a point of intersection with the remote end. With such a configuration, liquid pre~sure upon the liquid responsive plunger causes the weighted ball valve to be pushed from the remote end of the tubular receptacle falling onto the ball valve seat.
BRIEF ~ OF THE nR~WTNGS
These and other featllres of the invention will become more 10 apparent from the following description in which reference i3 made to the ~rp~.n~ dra~rings, wherein:
FIGURE 1 is a side elevation, in section, of a first : ~~nrl; L of an apparatus for collecting a mid3tream urine sample .
FIGURE 2 is a 3ide elevation, in section, of a 3econd -'; L of an apparatus for collecting a midstream urine sample .
FIGURE 3 is a side elevation, in section, of a third ' - ~;~ 1 of an apparatus for collecting a midstream urine sample, with a valve member in an open position.
FIGURE 4 is a side elevation, in section, of the third ' - ~; l illustrated in FIGURE 3, with the valve member in a closed position.
FIGURE 5 is a side elevation, in section, of a fir3t ~;f;f~d ver3ion of the t~lird ~rl; 1 illustrated in FIGURE
3.
FIGURE 6 is a side elevation, in section, of a 3econd l;f;f~d ver3ion of the t~lird ofl; L illustrated in FIGURE
3.
FIGURE 7 i3 a side elevation, in section, of a fourth ~ --7;r L of an apparatu3 for collecting a midstream urine sample, with a ';fil~d form of valve member.
n~r~ TT P~n D~ OF T~E l ~r r n Four preferred ~__l; ts of apparatus for collecting a midstream urine samples, g~n~r~lly identified by reference ~813~
o numer~ 10, 12, 14, and 15 respectively, will now be ~l~q~rlhc~d with reference to FIGURES 1 through 7. First ~ ; L 10 is illustrated in FIGURE 1. Second ~ rl i L 12 i3 illustrated in FIGURE 2. Third: I; L 14 is illustrated in FIGURES 3 5 and 4, with variations il:Lustrated in FIGURES 5 and 6. Fourth ' ~orl i L 15 is illu3trated in FIGURE 7 .
Referring to FIGURE 1, fir3t: o-li L 10 inr~ q a funnel 16 is provided having a wide end 18 and a narrow end 20.
10 Funnel 16 is incorporated into a lid 22 which f its onto a spPci container 24. As will hereinafter be further described, it is preferred that lid 22 have an air release port 48. Lid 22 when placed onto qpe~ i container 24 serves as the means for supporting funnel 16 over specimen container 24.
15 Lid 22 positions funnel 1~; with narrow end 20 at a mouth 26 of a liquid receiving cavit.y 28 of specimen container 24. A
tubular receptacle 30 depends from and i9 in fluid r~ tion with narrow end 20 of funnel 16. Tubular receptacle 30 has radial overflow passages 32 adjacent narrow 20 end 20 of funnel I6.
The use and operation of first: '~o~l; L 10 will now be ~ q~r;h-~d with reference to FIGURE 1. The lid that normally comes with specimen container 24 is removed and retained for 25 future use. First: ,-~1; L 10 is then placed onto specimen container 24, in substitution to the ~rigin;~l lid, by positioning lid 22 over mouth 26 of liquid receiving cavity 28.
The patient is instructed to urinate into wide end 18 of funnel 16. Urine enters wide end 18 of funnel 16, passing through 30 narrow end 20 and into tubular receptacle 30. Once tubular receptacle 30 is filled with forestream urine, any further urine entering tubular receptacle 30 overflows through radial overflow ~qqa~ 32 into liquid receiving cavity 28 of specimen container 24. Once the patient has finiqhed providing 35 his urine sample, tubu:lar receptacle 30 containing the forestream urine i~ tli qposF~d of . The lid that comes with sp~ci container 24 is then uged to 8eal 8pe~ i container 218130~
24 and the ~ealed contai:ner i8 forwarded to a laboratory for analysi~. It is preferred that tubular receptacle 30 be made of a f lexible material . This enables f lexible tubular receptacle to bend fit within the ,1; ~i nn~ of liquid 5 receiving cavity 28. It will be noted that, in doing 80, flF~rihle tubular receptacle 30 agsumes a '-J-- shape.
Referring to FIGURE 2, most of the ~ s of second embodiment 12 are identical to those in first: ~-o~li L 10 and 10 have been identified ~Tith the same reference r~
E~owever, second ~ li L 12 in~ a path by means of which air can escape from tubular receptacle 30. In second ~ 'i L 12, tubular receptacle 30 in~ a loop, generally identified by reference numeral 34. 100p 34 is formed by 15 having a remote end 36 of tubular receptacle 30 in fluid c~ ation with an upper throat 38 of tubular receptacle 30.
The use and operation of ~econd G ~ - ~i lt 12 will now be described with reference to FIGURE: 2. In general the use and 20 operation of second: ~ 'i L 12 iB identical to that of fir3t : ~ -1; L 10. Ilowever, with the loop configuration described, the entry of urine force~ air out of remote end 36 of tubular receptacle 30. As remote end 36 is in fluid communication with upper throat 38, the air exits from tubular receptacle 30 25 without having to pass through the accumulated forestream urine . This helps prevent air bubbles f rom agitating the urine, which could result in an int~rm;~r;n-J of some o~ the f orestream urine with the mid3tream urine entering tubular receptacle 30 and overflo~ing tubular receptacle 30 overflowing 30 into liquid receiving cavity 28 of specimen container 24 through radial overflow passages 32.
Referring to FIGURE~g 3 and 4, most of the elements of 35 third embodiment 14 are identical to those in first: - ~; L
10 and second: ~ ~~;- L 12; they have been identified with the same reference numerals. Elowever, third embodiment 14 includes 218130~
means for ;YO1At;ng fore~tream urine from the midstream urine 30 that no ; nt~ r; n~ can possibly occur . A movable valve member 40 is po3itioned a.t remote end 36 of tubular receptacle 30. Valve 40 is movable between an open position illustrated 5 in FIGURE 3 and a closed position illustrated in FIGURE 4.
Referring to FIGUEIE 3, in the open position valve member 40 is positioned in remote end 36. Inwardly projecting stop~ 41 and 42. Stops 41 are forward stops that limit r v~ L in the closed position. Valve member 40 i8 preferably con~tructed 10 with an enlarged head pc)rtion 43 and an elongate projecting portion 46. Projecting portion 46 fits between forward stops 41. Forward stops 41 perform their intended function by r~n~ ; n~ enlarged head portion 43 . Stops 42 are rezlrward stops. They are poYitioned at remote end 36 of tubular 15 receptacle 30 to prevent valve member 40 from falling into loop 34 when in the open position. They also engage head portion 43. Referring to FIGUR~ g, in the closed position valve member 40 projects from remote end 36 to block upper throat 38. In order to improve the sealing cArAhi 1 ity of valve member 40, 20 upper throat 38 has been - -'i f i ~1 to include a valve seat 44 which receives projecting portion 46 of valve member 40.
The use and operation of third: - 1; L 14 will now be described with reference to FIGURES 3 and 4. In general, the 25 use and operation of third ' - 1; L 14 is identical to that of ~econd: o~3i~~ L 12. Although valve member 40 is positioned at remote enc~ 36, air is able to pass by valve member 40 to escape into upper throat 38. Valve member 40 is responsive to liquid pressure. A8 urine reaches remote end 36 30 of tubular receptacle 30, the urine exerts pressure upon valve member 40 to move it from the open position, illustrated in FIGURE 3, to the closed position, illustrated in FIGURE 4.
Once valve member 40 is in the closed position, the forestream urine is isolated. Midstream urine entering tubular receptacle 35 30 overflows into liquid receiving cavity 28 of 8pe~ i c~ntA;n~r 24 through radial overflow passages 32.
g Referring to PIGURE~; 5 and 6, a number of r~-f;~ L8 that can be added to improve the per_ormance of third ~ i L 14 will now be deJ3cribed. T~he pre~ence of air in liquid receiving cavity 28 restrict3 the ~ree entry of liquid into spe-;
5 container 24. In order to address this problem, it iB
preferred that lid 22 have an air release port 48 so that the air can readily be displ;~ced.
The evacuation of ,~ir from tubular receptacle 30 can, lO similarly, be improved by providing an air evacuation passage 50 that extends from remote end 36 of tubular receptacle 30 to one of radial overflow passages 32. It should be noted that air evacuation passage 50 i5 blocked by valve member 40, when valve member 40 i8 in the closed position.
Should valve member 40 become po~itioned midway between the open and the closed po3ition, the entry of urine into tubular receptacle 30 will be restricted. Referring to FIGURE
5, in order to address this problem it is preferred that valve 20 member 40 have a wedge-like sealing 3urface 52. When liquid strikes wedge-like sealirlg surface 52 upon entry into tubular receptacle 30, it tends to push valve member 40 back into the open position. Eventually, as tubular receptacle fills with urine, sufficient pressure is exerted by the urine upon valve 25 member 40 to push it intcl the closed position.
Referring to FIGURE ti, there i8 illustrated an alternative approach to the problem of positioning valve member 40. A
weight 54 is attached to movable valve member 40 to pull valve 30 member 40 into the open position resting against rearward stops 42. As tubular receptacle 30 becomes filled with urine, the biasing force of weight 54 is ~vel~ by liquid pressure to move valve member 40 into the closed position.
Referring to FIGURE 7, there is illustrated an alternative valve configuration 15. In this ccnfi~llration, movable valve member 40 is made from several interacting ~ P~ts. These _ _ _ _ _ _ _ _ _ .. . . . .. .. . . . .. ... ... ... . .
c ~ Ants can include a liquid responsive plunger 56, a weighted ball 58 and a ball valve seat 60. 1iquid responsive plunger 56 is po3itioned in remote end 36 of tubular receptacle 30. Weighted ball 58 is disposed in remote end 36 of tubular 5 receptacle 30, downstream of liquid responsive plunger 56.
Ball valve 3eat 60 is positioned in upper throat 38 of tubular receptacle 30 below a point of intersection with remote end 36.
With such a c/~nf; gllration~ liquid pressure upon liquid reA,ponsive plunger 56 cauA,es weighted ball 58 to be pushed from lO remote end 36 of tubular ~-eceptacle 30 falling onto ball valve seat 60. With weighted ball 58 positioned on ball valve seat 60, the forestream urine is isolated from the midstream urine.
Forward stops 41 are e3sential in this application to limit v~ 1 of plunger 56.
FIGURES 5 through '7 all illustrate loop 34 with two connective ~Aollrlin~s 62 and 64. The purpose of connective couplings 62 and 64 is to enable the size of loop 34 to be _Yp:~n-l~d as may be required to provide sufficient capacity.
20 Paediatric urine samples are much smaller then adult ~amples.
Elence, the volume of fore~itream urine that must be captured is much less.
It will be apparent to one skilled in the art that 25 ~; f;,A~l-;on r~ may be made to the illustrated: ~ ~.1; r 1, without departing f rom the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (9)
1. An apparatus for collecting a mid-stream urine sample, comprising:
a funnel having a wide end and a narrow end;
means for supporting the funnel over a specimen container with the narrow end of the funnel at a mouth of a liquid receiving cavity of the specimen container; and a tubular receptacle depending from and in fluid communication with the narrow end of the funnel, the tubular receptacle having at least one radial overflow passage adjacent the narrow end of the funnel and below the support means, such that once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the at least one radial overflow passage, the tubular receptacle forming a loop with a remote end of the tubular receptacle being in fluid communication with an upper throat of the tubular receptacle.
a funnel having a wide end and a narrow end;
means for supporting the funnel over a specimen container with the narrow end of the funnel at a mouth of a liquid receiving cavity of the specimen container; and a tubular receptacle depending from and in fluid communication with the narrow end of the funnel, the tubular receptacle having at least one radial overflow passage adjacent the narrow end of the funnel and below the support means, such that once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the at least one radial overflow passage, the tubular receptacle forming a loop with a remote end of the tubular receptacle being in fluid communication with an upper throat of the tubular receptacle.
2. The apparatus as defined in Claim 1, wherein a movable valve member is positioned at the remote end of the tubular receptacle, the valve being movable between an open position in the remote end and a closed position projecting from the remote end to block the upper throat, the valve being responsive to liquid pressure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the open position to the closed position.
3. The apparatus as defined in Claim 2, wherein the valve member has a wedge-like sealing surface.
4. The apparatus as defined in Claim 1, wherein the means for supporting the funnel over a specimen container being to secure the funnel to a lid for the specimen container.
5. The apparatus as defined in Claim 4, wherein the lid has an air release port.
6. The apparatus as defined in Claim 2, the remote end of the tubular receptacle having inwardly projecting stops, and the movable valve member having a depending weight which pulls the valve member into the open position resting against the stops, until the biasing force of the weight is overcome by liquid pressure.
7. The apparatus as defined in Claim 1, wherein an air evacuation passage extends from the remote end of the tubular receptacle to the at least one radial overflow passage.
8. An apparatus for collecting a mid-stream urine sample, comprising:
a lid with an aperture;
a funnel having a wide end and a narrow end, the narrow end of the funnel being positioned in the aperture of the lid;
a flexible tubular receptacle depending from and in fluid communication with the narrow end of the funnel, the tubular receptacle having at least one radial overflow passage adjacent the narrow end of the funnel, such that once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the at least one radial overflow passage;
the tubular receptacle forming a loop with a remote end of the tubular receptacle being in fluid communication with an upper throat of the tubular receptacle; and a movable valve member positioned at the remote end of the tubular receptacle, the valve being movable between an open position in the remote end and a closed position projecting from the remote end to block the upper throat, the valve being responsive to liquid pressure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the open position to the closed position.
a lid with an aperture;
a funnel having a wide end and a narrow end, the narrow end of the funnel being positioned in the aperture of the lid;
a flexible tubular receptacle depending from and in fluid communication with the narrow end of the funnel, the tubular receptacle having at least one radial overflow passage adjacent the narrow end of the funnel, such that once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the at least one radial overflow passage;
the tubular receptacle forming a loop with a remote end of the tubular receptacle being in fluid communication with an upper throat of the tubular receptacle; and a movable valve member positioned at the remote end of the tubular receptacle, the valve being movable between an open position in the remote end and a closed position projecting from the remote end to block the upper throat, the valve being responsive to liquid pressure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the open position to the closed position.
9. In combination:
a specimen container having a mouth and a liquid receiving cavity;
a lid with an aperture positioned across the mouth of the specimen container;
a funnel having a wide end and a narrow end, the narrow end of the funnel being positioned in the aperture of the lid;
a flexible tubular receptacle depending from and in fluid communication with the narrow end of the funnel, the tubular receptacle extending into the liquid receiving cavity and bending to conform with the liquid receiving cavity, the tubular receptacle having at least one radial overflow passage adjacent the narrow end of the funnel, such that once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the at least one radial overflow passage into the liquid receiving cavity of the specimen container;
the tubular receptacle forming a loop with a remote end of the tubular receptacle being in fluid communication with an upper throat of the tubular receptacle; and a movable valve member positioned at the remote end of the tubular receptacle, the valve being movable between an open position in the remote end and a closed position projecting from the remote end to block the upper throat, the valve being responsive to liquid pressure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the open position to the closed position.
a specimen container having a mouth and a liquid receiving cavity;
a lid with an aperture positioned across the mouth of the specimen container;
a funnel having a wide end and a narrow end, the narrow end of the funnel being positioned in the aperture of the lid;
a flexible tubular receptacle depending from and in fluid communication with the narrow end of the funnel, the tubular receptacle extending into the liquid receiving cavity and bending to conform with the liquid receiving cavity, the tubular receptacle having at least one radial overflow passage adjacent the narrow end of the funnel, such that once the tubular receptacle is filled with urine, any further urine entering the tubular receptacle overflows through the at least one radial overflow passage into the liquid receiving cavity of the specimen container;
the tubular receptacle forming a loop with a remote end of the tubular receptacle being in fluid communication with an upper throat of the tubular receptacle; and a movable valve member positioned at the remote end of the tubular receptacle, the valve being movable between an open position in the remote end and a closed position projecting from the remote end to block the upper throat, the valve being responsive to liquid pressure such that as urine reaches the remote end of the tubular receptacle the urine exerts pressure upon the valve to move it from the open position to the closed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2181305 CA2181305C (en) | 1996-07-16 | 1996-07-16 | Apparatus for collecting a mid-stream urine sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2181305 CA2181305C (en) | 1996-07-16 | 1996-07-16 | Apparatus for collecting a mid-stream urine sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2181305A1 CA2181305A1 (en) | 1998-01-17 |
| CA2181305C true CA2181305C (en) | 2000-02-15 |
Family
ID=4158623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2181305 Expired - Lifetime CA2181305C (en) | 1996-07-16 | 1996-07-16 | Apparatus for collecting a mid-stream urine sample |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2181305C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11457899B2 (en) | 2014-09-30 | 2022-10-04 | Exosome Diagnostics, Inc. | Apparatuses, methods, and systems for sample collection and dispersion |
| CN115813447B (en) * | 2022-12-06 | 2023-07-18 | 南华大学附属第一医院 | A urine sampling device for endocrinology and metabolism department |
-
1996
- 1996-07-16 CA CA 2181305 patent/CA2181305C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2181305A1 (en) | 1998-01-17 |
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Effective date: 20160718 |