WO1999025251A1 - Medical spatula - Google Patents
Medical spatula Download PDFInfo
- Publication number
- WO1999025251A1 WO1999025251A1 PCT/GB1998/003431 GB9803431W WO9925251A1 WO 1999025251 A1 WO1999025251 A1 WO 1999025251A1 GB 9803431 W GB9803431 W GB 9803431W WO 9925251 A1 WO9925251 A1 WO 9925251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- spatula
- grip
- cervical
- spatula according
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0291—Instruments for taking cell samples or for biopsy for uterus
Definitions
- This invention relates to a medical spatula.
- the spatula finds particular application as a spatula for exfoliative cytology and it will be described with reference to a cervical spatula by way of example.
- PAP test named after the Greek-American physician George Papanicolaou who developed the vaginal smear test in 1928 to diagnose cervical cancer, is probably the most widely used example of exfoliative cytology. PAP tests are normally performed using a hand held scraper or spatula that is used to scrape off the outer cells of the cervix prior to a transfer of the cells to a glass slide for microscopic evaluation.
- the spatula device in most common use is the wooden AYRE'S spatula. These devices are not without their disadvantages, the AYRE'S spatula being difficult to manipulate without causing discomfort or injury to the patient and giving less than satisfactory results in obtaining adequate endocervical cell samples.
- spatula devices that are more flexible have been developed, one of which is the well-known CYTOBRUSH spatula.
- the CYTOBRUSH is significantly better than the wooden spatula for collecting endocervical cells, but not significantly better for collecting and detecting metaplastic cells.
- This invention provides a medical spatula comprising a grip and a substantially planar blade including an open loop of a resiliently deformable material extending about the outer periphery of the blade and a lattice of spaced apart bars of a resiliently deformable material that arise from the peripheral loop and transect the body of the blade.
- the spatula in the preferred form of the invention, is adapted for use as a cervical spatula in that the periphery of the blade is shaped to conform to the shape of the average cervical os.
- the shape of the cervical os varies widely from woman to woman and that the shape and consistency of the tissue of the cervical os tends to vary, within the same woman, in dependence on her age, the state of her pregnancy (if any) and the phase of her menstrual cycle.
- the spatula blade is therefore shaped in essence, to conform to an idealised cervical os.
- the flexibility of the blade is intended to assist in conforming the blade shape to any deviations from the idealised cervical shape that may be exhibited by an actual cervix when the spatula is used.
- the blade is essentially triangular in plan outline, the end of the spatula being constituted by the apex of the triangular blade and the sides of the triangular blade arising from the apex being concave in plan outline.
- All the plan outline corners of the triangular blade are rounded, the base corners being rounded more than the apex, in order to avoid possible discomfort or injury in use.
- the bars making up the body of the blade may conveniently be constituted by a plurality of non- discrete lands spaced apart from one another by interposed grooves. Some or all of the grooves may be constituted by slots formed to extend through the plane of the blade.
- all the grooves are constituted by slots.
- the blade and preferably the entire spatula, being the grip and the blade, are integrally formed from a resiliently deformable material such as injection moulded plastics, preferably low density polyethylene.
- the blade is adapted to flex in the plane of the blade.
- the peripheral edges of the blade may be relatively sharp in cross section.
- the grip may be longitudinally tapered from the hand grip end thereof to the point of attachment of the grip to the blade, the narrowing portion of the tapered grip being progressively more flexible up to the point of attachment of the grip to the blade. This is particularly appropriate for a spatula intended to be used as a cervical spatula.
- Figure 1 is a diagrammatic isometric view of a cervical spatula according to the invention.
- Figure 2 is a plan view of the spatula of Figure i;
- Figure 3 is a side elevation of the spatula of Figure 1;
- Figure 4 is a cross section through the blade on a line 4 - 4 in Figure 3 ;
- Figure 5 is an enlarged view of one half of the section of Figure 4 (the circled area) ;
- Figure 6 is a cross section on a line 6-6 in Figure 3;
- Figure 7 is an isometric view of an alternative cervical spatula according to the invention.
- Figure 8 is a diagrammatic isometric view of yet a further alternative cervical spatula according to the invention.
- Figure 9 is a side elevation (partly in section) on a line 9-9 in Figure 8;
- Figure 10 is an enlarged view of the area circled in Figure 9;
- Figure 11 is a cross section through one half of the blade of the spatula of Figure 8 taken on a line 11-11 in Figure 8;
- Figure 12 is a diagrammatic representation of the cervical spatula of the invention in use
- Figure 13 is a diagrammatic representation illustrating the positioning of the spatula blade in the cervical os.
- Figure 14 is a diagrammatic representation of the manner in which a cervical cytology sample collected with the spatula of the invention is deposited onto a glass slide.
- the exfoliative cytology spatula illustrated in the drawings is a cervical spatula 10 that is intended for conducting PAP tests.
- the CYTOBRUSH spatula includes a pair of flexible vanes extending on either side of a nose adapted for insertion into the cervical os during the conduct of the PAP test. Unfortunately, the flexibility of the vanes makes it difficult to obtain metaplastic cells.
- the cervical spatula of the invention was developed, the intention being to provide a spatula with sufficient deformability in or parallel to the principal axis of the spatula to permit substantial conformity with the shape of the cervical os during rotation of the spatula, but yet sufficient rigidity in the blade plane to perform an adequate scraping operation without hurting or injuring the patient.
- the cervical spatula 10 of the invention includes a grip comprising a round hand grip 12 on the end of a thin insertion rod 14.
- the grip 12 is provided with indentations 16 that serve as grip formations.
- the insertion rod 14 is fluted by means of longitudinally extending indentations 18 which serve to enhance the rotational rigidity of the insertion rod 14 without sacrificing the longitudinal flexibility that is required for the proper conduct of PAP tests.
- the spatula 10 is formed with a flat planar blade 20.
- the spatula is integrally moulded from low density polyethylene.
- the blade 20 is constituted by a grille or lattice of spaced apart bars 22 bounded by a closed loop 24 of material that defines the outer periphery of the blade 20.
- the spaces 23 between the bars 22 are formed as open slots that extend through the body of the blade 20, as can be seen more clearly from the cross sections in Figures 4 and 5.
- the blade 20 is symmetrical about a central axis (which is co-axial with the principal axis of the grip 14) and the blade 20 is essentially triangular in plan outline.
- the insertion end 26 of the spatula is constituted by the apex of the triangular blade and the sides of the triangle arise from the apex to provide a heart-shaped or arrow head-shaped spatula blade 20.
- the insertion end of the blade 20 is rounded in plan to define a nose 28 that is designed to enter the cervical os during sampling.
- the peripheral rim 24 of the blade 20 curves symmetrically away from the nose 28 on either side thereof.
- the concave curved areas 29 of the rim 24 is shaped to be complemental to the entrance and ecto- cervical area of the cervix. All surfaces of the blade 20 are rounded in order to minimise the risk of injury, pain and discomfort.
- the angle of intersection is acute and the point of intersection is relatively sharp. This is to provide relatively sharp rim edges 25 that are designed to maximise cell accumulation during sampling. For the same reason, the same design is used along the lines of intersection between the principal plane of the blade 20 and the edges of the bars 22 to provide sharp edges 27 in these areas as well.
- the cervical spatula 10.1 illustrated in Figure 7 is similar to the cervical spatula 10 described above with the exception of a smooth insertion rod 14.1 and hand grip 12.1.
- the cervical spatula 10.2 illustrated in Figures 8, 9, 10 and 11 differs from the cervical spatula 10 and 10.1 described above in several respects. Not only are the insertion rod 14.2 and the hand grip 12.2 different in the spatula 10.2, but the blade 20.2 differs markedly.
- the blade 20.2 is merely grooved so that the bars are constituted by a number of side-by-side lands 22.2 that are spaced apart from one another by grooves 23.2 interposed between the lands 22.2.
- the spatula 10.2 will be more rigid than the spatulas 10 and 10.1 described above if similarly dimensioned and made from similar materials.
- the biconcave triangular shape of the blade 20 is designed to permit selective acquisition of cells from the endocervical and ecto-cervical areas of the cervix.
- the peripheral rim 24 of the blade 20 being constituted, essentially, by a loop of resiliently deformable material, is complaint enough to accommodate most variations in the shape of the cervix.
- the blade 20 is substantially planar, but as can be seen from the side elevation of Figure 2 and the cross sections of Figures 4 and 5, the blade is tapered in two directions in cross section.
- the blade 20 tapers towards the nose 28.
- the opposing upper and lower plane surfaces of the blade converge from the thicker part of the blade 20, which is the end at which it is attached to the insertion rod 14 , towards the nose of 28.
- the blade 20 In transverse cross section, the blade 20 is inversely tapered so that, in cross section, it is thinner in the middle than it is at the sides, the thickest areas of the blade 20 being the wings 30 that define the base of the blade 20.
- the spatula grip which tapers from the hand grip 12, through the insertion rod 14 to the point of attachment to the blade 20, becomes progressively more flexible up to the point of attachment of the grip to the blade 20.
- Figure 12 which illustrates the cervical spatula 10 of the invention in use.
- the spatula 10 of the invention is inserted into the vagina of a patient through a speculum 32 that permits an unobstructed view of the cervix 34 of the patient.
- the practitioner having inserted the blade 20 through the speculum 32 up to the point where the blade 20 is correctly positioned in the cervix 34, rotates the spatula 10 between her thumb and forefinger to collect a sample of cervical cells.
- the insertion rod 14 flexes to accommodate the misalignment of the cervix and the vaginal passage.
- the peripheral rim 24 of the blade 20 flexes during rotation in order to accommodate any variations in the shape of the cervix 34 that deviate from the shape of the blade 20.
- the rim 24 flexes principally in the plane of the blade 20 with the bars 22 providing relatively little resistance to such flexing.
- the bars 22 do not detract significantly from the compliance of the peripheral rim 24, yet they contribute to the collection of cells.
- the blade 20 also flexes in the plane of the blade 20.
- the degree of flexing is not great and the blade 20 is intended to twist ever so slightly about the principal axis of the spatula 10 in helical fashion.
- FIG. 13 illustrates the location of the blade 21 within the cervix 34 in greater detail.
- the tip of the blade 20 penetrates deep into the cervix 34 in order to collect endo-cervical cells.
- the concave sides 29 of the blade 20 extend from within the cervix to the area adjacent to the entrance of the cervical os, to collect progressively less endo-cervical cells and progressively more ectocervical cells from the central regions of the blade 20 towards the wings 30 at the base of the blade 20.
- the blade 20 is sufficiently compliant to accommodate nulli- and multigravidae cervixes.
- the spatula 10 of the invention has additional advantages. Not only does it permit the selective acquisition of cells from the endocervical and ectocervical areas, but it allows deposition of the cells on a glass slide for instance, in a similar fashion.
- the spatula 10 of the invention seeks to overcome this deficiency by permitting more effective deposition of the cells onto a glass slide 36 without the need for excess manipulation.
- capillarity helps in drawing the sample from the blade 20 when, in depositing the collected cells on a glass slide, the practitioner draws the blade 20 longitudinally along the glass slide (in the direction of the arrows) .
- the practitioner is not required to smear the sample.
- This means that the blade can be drawn straight down the glass slide, depositing endocervical cells in the centre (40) of the sample and ectocervical cells on either side (42) thereof. This will allow the pathologist to examine the slide knowing that cells can be distinguished as to their origin.
- the spatula 10 of the invention therefore has the advantage that it permits the selective acquisition of cells from the endocervical and ecto-cervical areas. In addition, it allows deposition of the cells in a similar fashion.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002310254A CA2310254A1 (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
AU11649/99A AU1164999A (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
BR9814190-2A BR9814190A (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
PL98340584A PL340584A1 (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
HU0100218A HUP0100218A3 (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
EP98954593A EP1030601A1 (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
JP2000520690A JP2001522683A (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA97/10284 | 1997-11-14 | ||
ZA9710284 | 1997-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999025251A1 true WO1999025251A1 (en) | 1999-05-27 |
Family
ID=25586717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/003431 WO1999025251A1 (en) | 1997-11-14 | 1998-11-13 | Medical spatula |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1030601A1 (en) |
JP (1) | JP2001522683A (en) |
CN (1) | CN1282229A (en) |
AU (1) | AU1164999A (en) |
BR (1) | BR9814190A (en) |
CA (1) | CA2310254A1 (en) |
HU (1) | HUP0100218A3 (en) |
ID (1) | ID21307A (en) |
PL (1) | PL340584A1 (en) |
WO (1) | WO1999025251A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2359257A (en) * | 2001-02-06 | 2001-08-22 | Platinum Feather Consultants L | Spatula |
WO2001097693A1 (en) | 2000-06-23 | 2001-12-27 | Cellpath Plc | Improved medical sampler |
WO2002080776A1 (en) | 2001-04-05 | 2002-10-17 | Ashwood Timber & Plastics Ltd | Device for taking samples of ceels from the cervix uteri |
FR2881339A1 (en) * | 2005-02-02 | 2006-08-04 | Commissariat Energie Atomique | Biological interest molecule sampling device for diagnostic clinic field, has capture zones provided on respective sides of support and with respective developed surfaces three times greater than plane surface of zones |
WO2008006871A2 (en) * | 2006-07-13 | 2008-01-17 | Commissariat A L'energie Atomique | Device for sampling cells by contact |
US7540844B2 (en) * | 2003-08-20 | 2009-06-02 | Becton, Dickinson And Company | Cell scraper |
CN103725594A (en) * | 2013-12-25 | 2014-04-16 | 广州洁特生物过滤制品有限公司 | Cell scraper |
RU194902U1 (en) * | 2019-09-18 | 2019-12-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Курская государственная сельскохозяйственная академия имени И.И. Иванова" | Spatula for examining the oral cavity, pharynx and larynx in animals |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104825197A (en) * | 2015-05-18 | 2015-08-12 | 南京同仁医院 | Planer tool leaking net type cervical canal scratching device |
RU189496U1 (en) * | 2018-04-11 | 2019-05-24 | Научно-Производственный Кооператив "Синтакон" | MEDICAL SPATER FOR A CONTAINER WITH A TRANSPORT ENVIRONMENT, PARTICULAR PRESERVATOR |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2471088A (en) * | 1947-10-01 | 1949-05-24 | Clay Adams Company Inc | Cervical scraper |
US3881464A (en) * | 1971-12-09 | 1975-05-06 | Max Moses Levene | Sampling device and method |
EP0106461A2 (en) * | 1982-09-14 | 1984-04-25 | George Pistofidis | Gynaecological spatula |
US4759376A (en) * | 1984-05-29 | 1988-07-26 | Nils Stormby | Endocervical sampling brush and smear method |
WO1993001749A1 (en) * | 1991-07-17 | 1993-02-04 | Lonsten Pty. Limited | Pap smear sampling device |
WO1994009704A1 (en) * | 1992-10-23 | 1994-05-11 | Lonsten Pty. Limited | Endocervical probe for pap smear sampling head |
-
1998
- 1998-11-13 EP EP98954593A patent/EP1030601A1/en not_active Withdrawn
- 1998-11-13 CA CA002310254A patent/CA2310254A1/en not_active Abandoned
- 1998-11-13 PL PL98340584A patent/PL340584A1/en unknown
- 1998-11-13 AU AU11649/99A patent/AU1164999A/en not_active Abandoned
- 1998-11-13 CN CN98812308.8A patent/CN1282229A/en active Pending
- 1998-11-13 BR BR9814190-2A patent/BR9814190A/en not_active Application Discontinuation
- 1998-11-13 WO PCT/GB1998/003431 patent/WO1999025251A1/en not_active Application Discontinuation
- 1998-11-13 HU HU0100218A patent/HUP0100218A3/en unknown
- 1998-11-13 JP JP2000520690A patent/JP2001522683A/en active Pending
- 1998-11-16 ID IDP981492A patent/ID21307A/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2471088A (en) * | 1947-10-01 | 1949-05-24 | Clay Adams Company Inc | Cervical scraper |
US3881464A (en) * | 1971-12-09 | 1975-05-06 | Max Moses Levene | Sampling device and method |
EP0106461A2 (en) * | 1982-09-14 | 1984-04-25 | George Pistofidis | Gynaecological spatula |
US4759376A (en) * | 1984-05-29 | 1988-07-26 | Nils Stormby | Endocervical sampling brush and smear method |
WO1993001749A1 (en) * | 1991-07-17 | 1993-02-04 | Lonsten Pty. Limited | Pap smear sampling device |
WO1994009704A1 (en) * | 1992-10-23 | 1994-05-11 | Lonsten Pty. Limited | Endocervical probe for pap smear sampling head |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001097693A1 (en) | 2000-06-23 | 2001-12-27 | Cellpath Plc | Improved medical sampler |
GB2359257B (en) * | 2001-02-06 | 2002-01-16 | Platinum Feather Consultants L | Spatula |
WO2002062225A1 (en) * | 2001-02-06 | 2002-08-15 | Platinum Feather Consultants Limited | Medical spatula |
GB2359257A (en) * | 2001-02-06 | 2001-08-22 | Platinum Feather Consultants L | Spatula |
WO2002080776A1 (en) | 2001-04-05 | 2002-10-17 | Ashwood Timber & Plastics Ltd | Device for taking samples of ceels from the cervix uteri |
US7540844B2 (en) * | 2003-08-20 | 2009-06-02 | Becton, Dickinson And Company | Cell scraper |
JP2012166041A (en) * | 2005-02-02 | 2012-09-06 | Commissariat A L'energie Atomique & Aux Energies Alternatives | Device for contact molecular sampling |
WO2006082344A1 (en) * | 2005-02-02 | 2006-08-10 | Commissariat A L'energie Atomique | Device for contact molecular sampling |
US8152736B2 (en) | 2005-02-02 | 2012-04-10 | Commisariat A L'energie Atomique | Device for contact molecular sampling |
FR2881339A1 (en) * | 2005-02-02 | 2006-08-04 | Commissariat Energie Atomique | Biological interest molecule sampling device for diagnostic clinic field, has capture zones provided on respective sides of support and with respective developed surfaces three times greater than plane surface of zones |
WO2008006871A2 (en) * | 2006-07-13 | 2008-01-17 | Commissariat A L'energie Atomique | Device for sampling cells by contact |
FR2903590A1 (en) * | 2006-07-13 | 2008-01-18 | Commissariat Energie Atomique | CELL SENSING DEVICE BY CONTACT |
WO2008006871A3 (en) * | 2006-07-13 | 2008-02-28 | Commissariat Energie Atomique | Device for sampling cells by contact |
CN103725594A (en) * | 2013-12-25 | 2014-04-16 | 广州洁特生物过滤制品有限公司 | Cell scraper |
CN103725594B (en) * | 2013-12-25 | 2015-07-29 | 广州洁特生物过滤股份有限公司 | A kind of cell scraper |
RU194902U1 (en) * | 2019-09-18 | 2019-12-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Курская государственная сельскохозяйственная академия имени И.И. Иванова" | Spatula for examining the oral cavity, pharynx and larynx in animals |
Also Published As
Publication number | Publication date |
---|---|
CA2310254A1 (en) | 1999-05-27 |
ID21307A (en) | 1999-05-20 |
PL340584A1 (en) | 2001-02-12 |
HUP0100218A2 (en) | 2001-06-28 |
CN1282229A (en) | 2001-01-31 |
EP1030601A1 (en) | 2000-08-30 |
JP2001522683A (en) | 2001-11-20 |
BR9814190A (en) | 2000-10-03 |
AU1164999A (en) | 1999-06-07 |
HUP0100218A3 (en) | 2001-07-30 |
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