CA1069339A - Probe cover grip and release device - Google Patents
Probe cover grip and release deviceInfo
- Publication number
- CA1069339A CA1069339A CA277,023A CA277023A CA1069339A CA 1069339 A CA1069339 A CA 1069339A CA 277023 A CA277023 A CA 277023A CA 1069339 A CA1069339 A CA 1069339A
- Authority
- CA
- Canada
- Prior art keywords
- probe
- cover
- probe cover
- section
- handle
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/20—Clinical contact thermometers for use with humans or animals
- G01K13/25—Protective devices therefor, e.g. sleeves preventing contamination
Abstract
Applicant: Robert Bruce Turner et al For: Probe Cover Grip and Release Device ABSTRACT OF DISCLOSURE
A probe member for use with a probe cover including a handle having a mounting member; and a probe element fixed to the mounting member; the probe element includes at least one stationary salient section having a sharp edge outwardly flared toward the handle for gradually dilating the end of the probe cover installed on the probe element and impaling the adjacent surface of the probe cover to hold the probe cover firmly in place and prevent its release.
A probe member for use with a probe cover including a handle having a mounting member; and a probe element fixed to the mounting member; the probe element includes at least one stationary salient section having a sharp edge outwardly flared toward the handle for gradually dilating the end of the probe cover installed on the probe element and impaling the adjacent surface of the probe cover to hold the probe cover firmly in place and prevent its release.
Description
~o~
FIELD OF INVENTION
This invention relates to a probe member for use with a probe cover, and more particularly to such a probe member having a stationary impalement device for releasably securing a probe cover.
BACKGROUND OF INVENTION
-Electronic thermometers typically use an electric probe member with probe covers that may be reusable or disposable. Thermometers used in the health care industry for taking patients' temperatures use disposable covers to prevent infection and reduce sterilization costs. Contempo-rarily there are in use a number of different devices for holding the cover on the probe member. Some of these devices, such as cams, springs, sliding members, and various other complex and active parts, are expensive, tend to wear out, and are not trouble-free. Other devices are relatively less complex but do not provide the tight reliable fit of probe cover to probe member required with certain thermometer systems. Release mechanisms used to strip the probe cover from the probe member are often similarly complex and have met with indifferent success. Often the probe covers require some special configuration, taper, or retaining portions for cooperation with gripping and release devices, and may require special flexibility ~;
l ~06C~339 ll characteristics.
In many contemporary probe devices the probe cover, when ~in place, is unaer a significant stress due either to strain , ~nduced ~n t~e cover itself as by stretc~ing or to forces actively - a~plied to t~e cover hy springs or other active mechanis~s. This creates a danger that an inadvertantly released cover, if near or aimed a~ a patient, could cause harm and embarrassment. This danger is compounded w~en, as is often the case, the same general motion is-applied to install t~e cover as to release it.
!, SUMMARY OF INVENTION
! -~ ~
¦~ ~t ~s therefore an object of this învention to provide !l an improved, extremely simple device for securing a probe cover llon a probe member~ ~
,~ It is a further object of this invention to provide such -a dev~ce which tig~tly and reliahly, sealingly engages the probe I cover ~it~ at leiast a portion of the probe member.
, It ~s a further object of this invention to provide such a device wfi~c~ is easily and inexpens~vely made.
It is a further object of this invention to provide such a deyice wh~c~ operates without movîng parts to grip the probe 2Q '' cover.
i~ It is a further object of this învention to provîde such a gripping device which contrastingly enables quîck and eas~ release of tfie pro~e cover upon proper actuation.
, .
',. ,i ~-116J 1~ ~ 4 ~
l) l ~(~6~339 It is a further object of this invention to provide a simple and inexpensive release device which can upon proper manipulation quickly and easily strip the cover from the probe member.
It is a further object of this invention to provide a gripping device which securely holds the probe cover without imposing forces on it which can be a danger upon release.
It is a further object of this invention to provide a gripping and release device which requires differen~ motions to operate.
It is a further object of this invention to provide a gripping and release device which is operable with an extremely simply configured probe cover.
It is a further object of this invention to provide a gripping and release device which does not require a probe cover having special flexibility characteristics.
It is a further object of this invention to provide a gripping and release device which is operable with a simple, cylindrical shaped probe cover.
The invention results from the realization that a device for securing a probe cover on a probe member may be simply and elegantly produced using one or more sharp, flared edges which dilate the end of a cover as it is installed on a probe member and rely on .
.
11 'lC169339 ll ~,the resilience of t~e cover to exert a force inwardly and back-wardly on tfie sharp edge to t~ereby impale the cover and tightly ,secure it on the probe member.
~i -The invention features a pro~e mem~er for use with a probe l~cover including a handle that has a mounting member. There i5 a , probe element fixed to the mounting member. The probe element j includes at le,ast one stationary salient section having a sharp ! edge outwardly flared toward the handle for gradually dilating the l,end of a probe cover installed on the probe element and impaling .0 1It~e adjacent surface of the probe cover to hold the probe cover llfi~lyinplaceandpreventitsrelease In preferred emkodiments t~e salient section has a thin cross section and the sharp edge is a knife edge. T~e salient Isection ~olds tfie probe cover in place w~t~ its tip sealingly 7~engaged wit~ the free end of the probe element. The probe element~, may include a first component fixed to the mounting memb7~r and a ¦7second component fixed to t~e first component such that the salient ,~section is disposed on the second component proximate the mountingi l,member. The handle may furtfier include a release mechanism includ-,~ing a plunger slidablv disposed on the mounting member and having !
I' ;
,an openi~g proximate the salient section ~r~ich is larger t~an the portion of t~e probe element carrying the salient section, and ~smaller t~an t~e probe cover itself for bearing on the probe cover !
~and stripping it from t~e salient section with depression of the S lplunger.
'.
M-116~T ~'- 6 - I
. , : !j ~69339 According to a broad aspect of the present invention, there is provided in combination, a probe member and a disposabl~
probe cover attachable thereto. The probe member has a handle and an elongated generally cylindrical metallic probe element depending outwardly therefrom. The probe element is deformed to define at least one integral, ~ubstantially rigid salient section flaring outwardly from a longitudinal axis of the probe element and towards the handle portion. This rigid salient section terminates in a sharp edge. The probe cover is composed of a material deformable and penetrable relatively to the metal-lic material of the section. The handle portion includes means for slidably inserting the probe element into the probe cover.
The means for inserting forces the probe cover to deform over the salient section and causes the sharp edge to inscribe it-self fixedly into the probe cover, whereby the probe cover is rigidly mounted onto the probe member.
- 6a -.: ~
106933~ 1 , i I
The probe cover gripp~ng device, alone or in combination wit~
t~e probe cover release device, is useful wit~ electronic measuring systems for monitoxing ~arious parameters where use of a probe ' cover is desirable. In the pre~erred embodiment described herein, I the electronic measuring system is an electronlc thermometer sys-tem for measuring temperature.
DISCLOSU~E OF PREFERRED EMBODIMENT
Other objects, features and advantages will occur from the ' follo~ing description of a preerred em~odiment and the accompany-33',ing drawings, in w~ich:
LO ¦i Fig. 1 is a diagrammat;c plan view of a probe member embody-¦ ing the gripping and;release devices according to this in~ention ~ connected to an electronic t~ermometer and engaged with a probe !i cover shown in phantom;
Fig. 2 is an enlarged sectional vie~ of the handle of th~
L5 probe member and a portion of t~e probe element ~ith the probe coVer in place showing both t~e gripping and releasing devices , accordi~ng to this invention;
i Fig. 3 is a sectional view ta~en along lines 3-3 of Fig. 2;, i Fîg. 4 is a view similar to Fig. 2 with the plunger depress~d ~ to operate the pro~e cover release device;
Fig. 5 is a diagrammatic cross-sectional view of the probe element illustrating the desired engagement ~etween the free end i, of the probe element and the tip of the probe cover; 3 Fig. 6 is an axonometric view of a portion of the probe element which may be used wit~ t~e probe me~ber of Fig. L, illus-,--116J ~ 7~
il ' i ~69339 trating an alternative form of probe cover gripping device, and Fig. 7 is an exploded axonometric view of the mounting member, and tapered portion and cap of the plunger included in the handle.
There is shown in Fig. 1 a probe member 10 inter-connected by cable 12 to an electronic thermometer 14, having an operating switch 16, display 18, and a chamber 20 in which probe member 10 may be stored. The circuit used in thermometer 14 is that shown in U.S. Patent No. 3,906,797.
Probe member 10 includes a handle 22 and a probe element 24, which has been inserted in a probe cover, tube 26, having a metal tip 28. Tuhe 26 has a simple cylindrical shape with the usual flexibility characteristics of polyethylene or other similar plastic tubing. Handle 22 includes a mounting member 30 which include~ disc 32 having an extension arm 34 which receives cable 12 and a tapered portion 36. Handle 22 also includes plunger 38, which includes cap 40 and tapered portion 42 which surrounds tapered portion 36 of mounting ; 20 member 30. Probe element 24 includes a first component, tube 44, which is fixed to tapered portion 36, and a second ;~ component, tube 46, which receives and is fixed to, in its end 48, a portion of tube 44. The free end 50 of tube 46 ; contains a thermistor 52 or other transducer suited to sense the particular parameter being measured. In Fig. 1, tubes 44 and 46 are hollow tubes.
The device for gripping tube 26 includes one or more salient sections 54 which have sharp edges outwardly flared toward the handle 22.
~,~, ~ .
1065 33~ ¦
. Tube 26 is a resilient plastic materiai such as polyethylene !
which is dilated by the gradual action of the outwardly flared, ~Fig. 2, portions 55 and 56 of tube 46, upon the insertion of probe¦
,element 24. The radially inward forces, arrows 58, in combination't with the longitudinal tensile forces, arrows 60, cause the inner surface 62 of tube 26 to become impaled at depressions 64, 66, by :t~e sharp edges, essentially knife edges, 68 and 70~ Edges 68 and .7~ are effectively knife edges because of the thinness of the ~wall of tu~e 26, w~ich is approximately ten thousandths o an inch~
llt~ck.
; The longitudinal, arrows 60~ and radial, ~rrows 58, forces, Fig. 1, are quite small and produce no bias sufficient to "pop", or "shoot", t~e cover off the probe~ In fact even when plunger 38j ~is actuated to release the cover, tube 26, it typically only I'moves part way down probe element 24 and the removal is completed ,~y gravity when probe element 24 is pointed downward. In additionl ,lsince the cover release motion is effected by placing two fingers , ;beneath disc 32 a~out tapered portion 42 and pus~ing down on plun-' ~ger 38 wit~ the thumb, as illustrated in Fig. 4, while the ¢over . ~0 Iinstallation motion is effected by gripping disc 32 between the `.thum~ and forefinger and pushing down until the cover passes over ~and is ~mpaled on edges 68, 70, as illustrated in Fig. 2, there is little likelihood of inadvertant release of a cover.
Tube 44 ~as one end 72 force-fitted within tube 46. ~he ~5 other end passes through hole 74 in the tapered portion 42 of j ,. I
;
3 - 9 - i . ' 1~3 6~ 3 39 plunger 38 and is fitted in bore 76 in tapered portion 36 of mounting member 30, where it is fixed by the close tolerance of bore 76 and the flared portion 78 of bore 76, which is fitted to the flared end 80 of tube 44. Bore 76 continues to a chamber 82, which in turn communicates with passage 84, which exits arm 34 at port 86. Cable 12 is routed through passage 84, chamber 82, bore 76, tube 44, and tube 46 to thermistor 52 at the free end 50 of probe element 24. Cap 40 and tapered portion 42 of plunger 38 are interconnected by semi-cylindrical members 88 and 90, only one of which, 88, is shown in Fig. 2, which are slidably accommodated in disc 32 of mounting member 30 as shown in detail in Fig. 7, thereby permitting plunger 38 to move longitudinally to and fro relative to mounting member 30 and pro~e element 24. Hole 74 in tapered portion 42 of plunger 38 has a larger corres-ponding dimension than tube 46 in the area of flared edges 68 and 70 but this dimension is smaller than at least the outer diameter of tube 26, in order to facilitate stripping tube 26 from edges 68 and 70 and removing it from probe element 24.
The cross-section presented to hole 74 by tubes 44, 46, and edges 68 and 70, is shown in Fig. 3. when tube 26 is to be stripped from edges 68 and 70 and removed from probe element 24, plunger 38 is depressed, Fig. 4, so that cap 40 moves longitudinally inward until it contacts disc 32 of mount-ing member 30. This action causes tapered portion 42, inter-connected with cap 40 by means of semi-cylindrical members 88 and 90 (member 90 not visible in Fig. 4) to move forward, .. ~ ,. . .
~0~339 to the right in Fig. 4 relative to tapered portion 36 so that the forward annular edge 92 of portion 36 comes in contact with the corresponding annular edge 94 of tube 26 and strips it from edges 68 and 70 so that it can be removed from probe element 24.
- The tight, sealing engagement between the tip 28 of tube 26 and the free end 50 of probe element 24, achieved by the gripping device, including edges 68 and 70, of this invention, is illustrated in Fig. 5, where the tight seal at junction 100 between the inside of tip 28 and the outside of end 50 provides a buffer zone 102 that may be filled with a suitable heat transfer material such as air or any other medium depending upon the requirements of the parameters to be measured.
The gripping device of this invention is not limited -;
to the provision of one or more flared surfaces 55 and 56 having sharp edges 68 and 70 located at the end 48 of a tube.
For example, in Fig. 6, where like parts have been given like numbers accompanied by a lower case a, salient sections 54a are spaced from the end 48a of probe element 24a, and these sections have been formed from the tube leaving hole 106 and hole 108, not shown.
Mounting member 30 includes a pair of semi-cylindri-cal passages 110 and 112, Fig. 7, in disc 32, which accommodate members 88 and 90, respectively, extending from tapered portion 42 of plunger 38 when tapered portion 42 is in position on tapered portion 36. When tapered portion 42 is in position on tapered portion 36 and members ! ~6933g 88 and 9~ extend t~roug~ ~assages 110 and 112, cap 4~ is positione ~`wit~ members 88 and ga terminating in recesse~ 114, not shown, and¦
1.116.
- !t ~hile th~ invention has been illustrated in connection with !
.an electronic thermometer~ it is suitable for use with other elec-tronic m~asuring equipment or a probe used for any purpose that requ~res a simple but reliable gxipping ~evice for a probe cover.
In addition, although the invention has been illustrated with a ',, tu~ular probe element and tubular probe cover, this is no~ a neces~
~, sary limitation of the `invention as various other shap~s for them ¦
¦¦ are known and are witE n the scope of this invention.
~¦ Ot~er em~odiments will occur to those skilled in the art and are with~n the following claims:
W~at is clal~med ~s:
1,, I
. , .
j' .
.' i~ . I
'i 1 , l !
'. l ' i, M-116J, ~ 12 ~
: !
,, i
FIELD OF INVENTION
This invention relates to a probe member for use with a probe cover, and more particularly to such a probe member having a stationary impalement device for releasably securing a probe cover.
BACKGROUND OF INVENTION
-Electronic thermometers typically use an electric probe member with probe covers that may be reusable or disposable. Thermometers used in the health care industry for taking patients' temperatures use disposable covers to prevent infection and reduce sterilization costs. Contempo-rarily there are in use a number of different devices for holding the cover on the probe member. Some of these devices, such as cams, springs, sliding members, and various other complex and active parts, are expensive, tend to wear out, and are not trouble-free. Other devices are relatively less complex but do not provide the tight reliable fit of probe cover to probe member required with certain thermometer systems. Release mechanisms used to strip the probe cover from the probe member are often similarly complex and have met with indifferent success. Often the probe covers require some special configuration, taper, or retaining portions for cooperation with gripping and release devices, and may require special flexibility ~;
l ~06C~339 ll characteristics.
In many contemporary probe devices the probe cover, when ~in place, is unaer a significant stress due either to strain , ~nduced ~n t~e cover itself as by stretc~ing or to forces actively - a~plied to t~e cover hy springs or other active mechanis~s. This creates a danger that an inadvertantly released cover, if near or aimed a~ a patient, could cause harm and embarrassment. This danger is compounded w~en, as is often the case, the same general motion is-applied to install t~e cover as to release it.
!, SUMMARY OF INVENTION
! -~ ~
¦~ ~t ~s therefore an object of this învention to provide !l an improved, extremely simple device for securing a probe cover llon a probe member~ ~
,~ It is a further object of this invention to provide such -a dev~ce which tig~tly and reliahly, sealingly engages the probe I cover ~it~ at leiast a portion of the probe member.
, It ~s a further object of this invention to provide such a device wfi~c~ is easily and inexpens~vely made.
It is a further object of this invention to provide such a deyice wh~c~ operates without movîng parts to grip the probe 2Q '' cover.
i~ It is a further object of this învention to provîde such a gripping device which contrastingly enables quîck and eas~ release of tfie pro~e cover upon proper actuation.
, .
',. ,i ~-116J 1~ ~ 4 ~
l) l ~(~6~339 It is a further object of this invention to provide a simple and inexpensive release device which can upon proper manipulation quickly and easily strip the cover from the probe member.
It is a further object of this invention to provide a gripping device which securely holds the probe cover without imposing forces on it which can be a danger upon release.
It is a further object of this invention to provide a gripping and release device which requires differen~ motions to operate.
It is a further object of this invention to provide a gripping and release device which is operable with an extremely simply configured probe cover.
It is a further object of this invention to provide a gripping and release device which does not require a probe cover having special flexibility characteristics.
It is a further object of this invention to provide a gripping and release device which is operable with a simple, cylindrical shaped probe cover.
The invention results from the realization that a device for securing a probe cover on a probe member may be simply and elegantly produced using one or more sharp, flared edges which dilate the end of a cover as it is installed on a probe member and rely on .
.
11 'lC169339 ll ~,the resilience of t~e cover to exert a force inwardly and back-wardly on tfie sharp edge to t~ereby impale the cover and tightly ,secure it on the probe member.
~i -The invention features a pro~e mem~er for use with a probe l~cover including a handle that has a mounting member. There i5 a , probe element fixed to the mounting member. The probe element j includes at le,ast one stationary salient section having a sharp ! edge outwardly flared toward the handle for gradually dilating the l,end of a probe cover installed on the probe element and impaling .0 1It~e adjacent surface of the probe cover to hold the probe cover llfi~lyinplaceandpreventitsrelease In preferred emkodiments t~e salient section has a thin cross section and the sharp edge is a knife edge. T~e salient Isection ~olds tfie probe cover in place w~t~ its tip sealingly 7~engaged wit~ the free end of the probe element. The probe element~, may include a first component fixed to the mounting memb7~r and a ¦7second component fixed to t~e first component such that the salient ,~section is disposed on the second component proximate the mountingi l,member. The handle may furtfier include a release mechanism includ-,~ing a plunger slidablv disposed on the mounting member and having !
I' ;
,an openi~g proximate the salient section ~r~ich is larger t~an the portion of t~e probe element carrying the salient section, and ~smaller t~an t~e probe cover itself for bearing on the probe cover !
~and stripping it from t~e salient section with depression of the S lplunger.
'.
M-116~T ~'- 6 - I
. , : !j ~69339 According to a broad aspect of the present invention, there is provided in combination, a probe member and a disposabl~
probe cover attachable thereto. The probe member has a handle and an elongated generally cylindrical metallic probe element depending outwardly therefrom. The probe element is deformed to define at least one integral, ~ubstantially rigid salient section flaring outwardly from a longitudinal axis of the probe element and towards the handle portion. This rigid salient section terminates in a sharp edge. The probe cover is composed of a material deformable and penetrable relatively to the metal-lic material of the section. The handle portion includes means for slidably inserting the probe element into the probe cover.
The means for inserting forces the probe cover to deform over the salient section and causes the sharp edge to inscribe it-self fixedly into the probe cover, whereby the probe cover is rigidly mounted onto the probe member.
- 6a -.: ~
106933~ 1 , i I
The probe cover gripp~ng device, alone or in combination wit~
t~e probe cover release device, is useful wit~ electronic measuring systems for monitoxing ~arious parameters where use of a probe ' cover is desirable. In the pre~erred embodiment described herein, I the electronic measuring system is an electronlc thermometer sys-tem for measuring temperature.
DISCLOSU~E OF PREFERRED EMBODIMENT
Other objects, features and advantages will occur from the ' follo~ing description of a preerred em~odiment and the accompany-33',ing drawings, in w~ich:
LO ¦i Fig. 1 is a diagrammat;c plan view of a probe member embody-¦ ing the gripping and;release devices according to this in~ention ~ connected to an electronic t~ermometer and engaged with a probe !i cover shown in phantom;
Fig. 2 is an enlarged sectional vie~ of the handle of th~
L5 probe member and a portion of t~e probe element ~ith the probe coVer in place showing both t~e gripping and releasing devices , accordi~ng to this invention;
i Fig. 3 is a sectional view ta~en along lines 3-3 of Fig. 2;, i Fîg. 4 is a view similar to Fig. 2 with the plunger depress~d ~ to operate the pro~e cover release device;
Fig. 5 is a diagrammatic cross-sectional view of the probe element illustrating the desired engagement ~etween the free end i, of the probe element and the tip of the probe cover; 3 Fig. 6 is an axonometric view of a portion of the probe element which may be used wit~ t~e probe me~ber of Fig. L, illus-,--116J ~ 7~
il ' i ~69339 trating an alternative form of probe cover gripping device, and Fig. 7 is an exploded axonometric view of the mounting member, and tapered portion and cap of the plunger included in the handle.
There is shown in Fig. 1 a probe member 10 inter-connected by cable 12 to an electronic thermometer 14, having an operating switch 16, display 18, and a chamber 20 in which probe member 10 may be stored. The circuit used in thermometer 14 is that shown in U.S. Patent No. 3,906,797.
Probe member 10 includes a handle 22 and a probe element 24, which has been inserted in a probe cover, tube 26, having a metal tip 28. Tuhe 26 has a simple cylindrical shape with the usual flexibility characteristics of polyethylene or other similar plastic tubing. Handle 22 includes a mounting member 30 which include~ disc 32 having an extension arm 34 which receives cable 12 and a tapered portion 36. Handle 22 also includes plunger 38, which includes cap 40 and tapered portion 42 which surrounds tapered portion 36 of mounting ; 20 member 30. Probe element 24 includes a first component, tube 44, which is fixed to tapered portion 36, and a second ;~ component, tube 46, which receives and is fixed to, in its end 48, a portion of tube 44. The free end 50 of tube 46 ; contains a thermistor 52 or other transducer suited to sense the particular parameter being measured. In Fig. 1, tubes 44 and 46 are hollow tubes.
The device for gripping tube 26 includes one or more salient sections 54 which have sharp edges outwardly flared toward the handle 22.
~,~, ~ .
1065 33~ ¦
. Tube 26 is a resilient plastic materiai such as polyethylene !
which is dilated by the gradual action of the outwardly flared, ~Fig. 2, portions 55 and 56 of tube 46, upon the insertion of probe¦
,element 24. The radially inward forces, arrows 58, in combination't with the longitudinal tensile forces, arrows 60, cause the inner surface 62 of tube 26 to become impaled at depressions 64, 66, by :t~e sharp edges, essentially knife edges, 68 and 70~ Edges 68 and .7~ are effectively knife edges because of the thinness of the ~wall of tu~e 26, w~ich is approximately ten thousandths o an inch~
llt~ck.
; The longitudinal, arrows 60~ and radial, ~rrows 58, forces, Fig. 1, are quite small and produce no bias sufficient to "pop", or "shoot", t~e cover off the probe~ In fact even when plunger 38j ~is actuated to release the cover, tube 26, it typically only I'moves part way down probe element 24 and the removal is completed ,~y gravity when probe element 24 is pointed downward. In additionl ,lsince the cover release motion is effected by placing two fingers , ;beneath disc 32 a~out tapered portion 42 and pus~ing down on plun-' ~ger 38 wit~ the thumb, as illustrated in Fig. 4, while the ¢over . ~0 Iinstallation motion is effected by gripping disc 32 between the `.thum~ and forefinger and pushing down until the cover passes over ~and is ~mpaled on edges 68, 70, as illustrated in Fig. 2, there is little likelihood of inadvertant release of a cover.
Tube 44 ~as one end 72 force-fitted within tube 46. ~he ~5 other end passes through hole 74 in the tapered portion 42 of j ,. I
;
3 - 9 - i . ' 1~3 6~ 3 39 plunger 38 and is fitted in bore 76 in tapered portion 36 of mounting member 30, where it is fixed by the close tolerance of bore 76 and the flared portion 78 of bore 76, which is fitted to the flared end 80 of tube 44. Bore 76 continues to a chamber 82, which in turn communicates with passage 84, which exits arm 34 at port 86. Cable 12 is routed through passage 84, chamber 82, bore 76, tube 44, and tube 46 to thermistor 52 at the free end 50 of probe element 24. Cap 40 and tapered portion 42 of plunger 38 are interconnected by semi-cylindrical members 88 and 90, only one of which, 88, is shown in Fig. 2, which are slidably accommodated in disc 32 of mounting member 30 as shown in detail in Fig. 7, thereby permitting plunger 38 to move longitudinally to and fro relative to mounting member 30 and pro~e element 24. Hole 74 in tapered portion 42 of plunger 38 has a larger corres-ponding dimension than tube 46 in the area of flared edges 68 and 70 but this dimension is smaller than at least the outer diameter of tube 26, in order to facilitate stripping tube 26 from edges 68 and 70 and removing it from probe element 24.
The cross-section presented to hole 74 by tubes 44, 46, and edges 68 and 70, is shown in Fig. 3. when tube 26 is to be stripped from edges 68 and 70 and removed from probe element 24, plunger 38 is depressed, Fig. 4, so that cap 40 moves longitudinally inward until it contacts disc 32 of mount-ing member 30. This action causes tapered portion 42, inter-connected with cap 40 by means of semi-cylindrical members 88 and 90 (member 90 not visible in Fig. 4) to move forward, .. ~ ,. . .
~0~339 to the right in Fig. 4 relative to tapered portion 36 so that the forward annular edge 92 of portion 36 comes in contact with the corresponding annular edge 94 of tube 26 and strips it from edges 68 and 70 so that it can be removed from probe element 24.
- The tight, sealing engagement between the tip 28 of tube 26 and the free end 50 of probe element 24, achieved by the gripping device, including edges 68 and 70, of this invention, is illustrated in Fig. 5, where the tight seal at junction 100 between the inside of tip 28 and the outside of end 50 provides a buffer zone 102 that may be filled with a suitable heat transfer material such as air or any other medium depending upon the requirements of the parameters to be measured.
The gripping device of this invention is not limited -;
to the provision of one or more flared surfaces 55 and 56 having sharp edges 68 and 70 located at the end 48 of a tube.
For example, in Fig. 6, where like parts have been given like numbers accompanied by a lower case a, salient sections 54a are spaced from the end 48a of probe element 24a, and these sections have been formed from the tube leaving hole 106 and hole 108, not shown.
Mounting member 30 includes a pair of semi-cylindri-cal passages 110 and 112, Fig. 7, in disc 32, which accommodate members 88 and 90, respectively, extending from tapered portion 42 of plunger 38 when tapered portion 42 is in position on tapered portion 36. When tapered portion 42 is in position on tapered portion 36 and members ! ~6933g 88 and 9~ extend t~roug~ ~assages 110 and 112, cap 4~ is positione ~`wit~ members 88 and ga terminating in recesse~ 114, not shown, and¦
1.116.
- !t ~hile th~ invention has been illustrated in connection with !
.an electronic thermometer~ it is suitable for use with other elec-tronic m~asuring equipment or a probe used for any purpose that requ~res a simple but reliable gxipping ~evice for a probe cover.
In addition, although the invention has been illustrated with a ',, tu~ular probe element and tubular probe cover, this is no~ a neces~
~, sary limitation of the `invention as various other shap~s for them ¦
¦¦ are known and are witE n the scope of this invention.
~¦ Ot~er em~odiments will occur to those skilled in the art and are with~n the following claims:
W~at is clal~med ~s:
1,, I
. , .
j' .
.' i~ . I
'i 1 , l !
'. l ' i, M-116J, ~ 12 ~
: !
,, i
Claims (7)
1. In combination, a probe member and a disposable probe cover attachable thereto, said probe member having a handle and an elongated generally cylindrical metallic probe element de-pending outwardly therefrom, said probe element being deformed to define at least one integral, substantially rigid salient section flaring outwardly from a longitudinal axis of said probe element and towards said handle portion, said section terminating in a sharp edge, said probe cover being composed of a material deformable and penetrable relatively to the metallic material of said section, said handle portion including means for slid-ably inserting said probe element into said probe cover, said means for inserting forcing said probe cover to deform over said salient section and causing said sharp edge to inscribe itself fixedly into said probe cover, whereby said probe cover is rigidly mounted onto said probe member.
2. Apparatus as described in claim 1 wherein said handle portion further includes plunger means, slidably movable with respect to said means for inserting, for exerting removal force against said probe cover and against the sharp edge of said sec-tion, and for forcing said sharp edge to cut its way free of said probe cover.
3. Apparatus as described in claim 1 wherein said probe element includes a first tubular portion extending outwardly from said handle portion, and a second tubular portion connect-ably fit over the end of said first portion opposite said handle, said tubular portion being flared outwardly at its end fitting over said first portion.
4. Apparatus as described in claim 1 wherein said salient sections are formed as finned elements cut partially and bent outwardly from said probe element.
5. Apparatus as described in claim 2 in which said sharp edge is a knife edge.
6. Apparatus as described in claim 5 in which said salient section holds said probe cover in place with its tip sealingly engaged in the free end of said probe cover.
7. Apparatus as described in claim 5 in which said salient section has a thin cross-section.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/681,348 US4112762A (en) | 1976-04-28 | 1976-04-28 | Probe cover grip and release device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1069339A true CA1069339A (en) | 1980-01-08 |
Family
ID=24734898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA277,023A Expired CA1069339A (en) | 1976-04-28 | 1977-04-26 | Probe cover grip and release device |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4112762A (en) |
| JP (1) | JPS52132855A (en) |
| BE (1) | BE854079A (en) |
| BR (1) | BR7702679A (en) |
| CA (1) | CA1069339A (en) |
| ES (1) | ES242124Y (en) |
| FR (1) | FR2349823A1 (en) |
| GB (1) | GB1544043A (en) |
| LU (1) | LU77212A1 (en) |
| NL (1) | NL7704629A (en) |
| SE (1) | SE7704832L (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4282591A (en) * | 1979-03-22 | 1981-08-04 | Andreuccetti Ilio A | Light control and indicating device |
| JP3514138B2 (en) * | 1998-09-29 | 2004-03-31 | テルモ株式会社 | Probe cover removal mechanism and ear thermometer |
| US6461037B1 (en) * | 1999-02-28 | 2002-10-08 | Alaris Medical Systems, Inc. | Thermometer probe for use with disposable probe cover |
| JP3945189B2 (en) * | 2001-06-01 | 2007-07-18 | オムロンヘルスケア株式会社 | Infrared thermometer |
| US20060120432A1 (en) * | 2003-01-06 | 2006-06-08 | Loren Lantz | Tympanic thermometer with ejection mechanism |
| US6786636B1 (en) * | 2003-07-15 | 2004-09-07 | Norm Pacific Automation Corp. | Mechanism for removing probe cover from a thermometer probe |
| US7497130B2 (en) * | 2004-07-15 | 2009-03-03 | Pdc Facilities, Inc. | Liner for a flow meter |
| US7828773B2 (en) * | 2005-07-11 | 2010-11-09 | Covidien Ag | Safety reset key and needle assembly |
| US7905857B2 (en) * | 2005-07-11 | 2011-03-15 | Covidien Ag | Needle assembly including obturator with safety reset |
| US7850650B2 (en) | 2005-07-11 | 2010-12-14 | Covidien Ag | Needle safety shield with reset |
| US7815367B2 (en) * | 2004-11-16 | 2010-10-19 | Welch Allyn, Inc. | Multi-site infrared thermometer |
| US7572056B2 (en) * | 2004-11-16 | 2009-08-11 | Welch Allyn, Inc. | Probe cover for thermometry apparatus |
| US7857507B2 (en) * | 2004-11-16 | 2010-12-28 | Welch Allyn, Inc. | Temperature patch and method of using the same |
| US7165467B2 (en) * | 2005-03-14 | 2007-01-23 | Endress + Hauser Inc. | Disposable sterilizable liner for a level, pressure or temperature measurement instrument |
| US20060276747A1 (en) * | 2005-06-06 | 2006-12-07 | Sherwood Services Ag | Needle assembly with removable depth stop |
| US20060276772A1 (en) * | 2005-06-06 | 2006-12-07 | Sherwood Services Ag | Bayonet release of safety shield for needle tip |
| US7731692B2 (en) | 2005-07-11 | 2010-06-08 | Covidien Ag | Device for shielding a sharp tip of a cannula and method of using the same |
| US7819139B2 (en) * | 2005-07-14 | 2010-10-26 | Pdc Facilities, Inc. | Liner for a flow meter |
| CN1881958B (en) * | 2005-08-08 | 2011-12-07 | 华为技术有限公司 | Method and apparatus for user device switching from packet domain to circuit domain |
| US7316507B2 (en) | 2005-11-03 | 2008-01-08 | Covidien Ag | Electronic thermometer with flex circuit location |
| US7654735B2 (en) * | 2005-11-03 | 2010-02-02 | Covidien Ag | Electronic thermometer |
| US20070100253A1 (en) * | 2005-11-03 | 2007-05-03 | Sherwood Services Ag | Electronic thermometer with sensor location |
| US7484345B2 (en) * | 2005-11-28 | 2009-02-03 | Pdc Facilities, Inc. | Filling machine |
| US7749170B2 (en) * | 2007-05-22 | 2010-07-06 | Tyco Healthcare Group Lp | Multiple configurable electronic thermometer |
| DE102007036693A1 (en) * | 2007-08-03 | 2009-02-05 | Abb Ag | Thermometer with replaceable measuring insert and method for replacing same |
| US8357104B2 (en) | 2007-11-01 | 2013-01-22 | Coviden Lp | Active stylet safety shield |
| US8496377B2 (en) * | 2007-12-31 | 2013-07-30 | Covidien Lp | Thermometer having molded probe component |
| US8657758B2 (en) | 2010-12-02 | 2014-02-25 | Welch Allyn, Inc. | Devices and methods for temperature determination |
| US11274427B2 (en) | 2020-03-25 | 2022-03-15 | Hal Coburn Kendrick | Plunger cover apparatus, system, and method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3500280A (en) * | 1967-08-21 | 1970-03-10 | John D Ensign | Temperature sensing probe |
| DE1773116A1 (en) * | 1968-04-03 | 1971-10-28 | Braun Ag | Penetration probe for medical temperature measuring devices |
| US3650153A (en) * | 1969-10-07 | 1972-03-21 | Ardath M Schwab | Apparatus and method for applying sterile cover to temperature sensitive probe |
| US3738479A (en) * | 1970-04-14 | 1973-06-12 | S Sato | Disposable rigid thermometer probe cover |
| US3832669A (en) * | 1970-08-10 | 1974-08-27 | Royal Medical Corp | Temperature-sensing device |
| US3738173A (en) * | 1971-11-22 | 1973-06-12 | Ivac Corp | Temperature sensing probe and disposable probe cover |
| US3732734A (en) * | 1972-05-25 | 1973-05-15 | Centaur Chemical Co | Micropipette with disposable tips |
| US3929018A (en) * | 1974-05-06 | 1975-12-30 | American Med Electronics | Probe system |
| US3999434A (en) * | 1975-01-09 | 1976-12-28 | Filac Corporation | Temperature probe assembly and probe cover retainer |
-
1976
- 1976-04-28 US US05/681,348 patent/US4112762A/en not_active Expired - Lifetime
-
1977
- 1977-04-26 CA CA277,023A patent/CA1069339A/en not_active Expired
- 1977-04-26 FR FR7712572A patent/FR2349823A1/en not_active Withdrawn
- 1977-04-27 LU LU77212A patent/LU77212A1/xx unknown
- 1977-04-27 BR BR7702679A patent/BR7702679A/en unknown
- 1977-04-27 NL NL7704629A patent/NL7704629A/en not_active Application Discontinuation
- 1977-04-27 SE SE7704832A patent/SE7704832L/en unknown
- 1977-04-27 GB GB17553/77A patent/GB1544043A/en not_active Expired
- 1977-04-28 JP JP4856577A patent/JPS52132855A/en active Pending
- 1977-04-28 BE BE177116A patent/BE854079A/en unknown
- 1977-06-28 ES ES1977242124U patent/ES242124Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52132855A (en) | 1977-11-07 |
| US4112762A (en) | 1978-09-12 |
| ES242124U (en) | 1979-10-01 |
| ES242124Y (en) | 1980-05-16 |
| FR2349823A1 (en) | 1977-11-25 |
| SE7704832L (en) | 1977-10-29 |
| NL7704629A (en) | 1977-11-01 |
| GB1544043A (en) | 1979-04-11 |
| LU77212A1 (en) | 1977-08-22 |
| BE854079A (en) | 1977-10-28 |
| BR7702679A (en) | 1978-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |