CA1178821A - Apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing - Google Patents
Apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressingInfo
- Publication number
- CA1178821A CA1178821A CA000399065A CA399065A CA1178821A CA 1178821 A CA1178821 A CA 1178821A CA 000399065 A CA000399065 A CA 000399065A CA 399065 A CA399065 A CA 399065A CA 1178821 A CA1178821 A CA 1178821A
- Authority
- CA
- Canada
- Prior art keywords
- pressure
- indicating
- retaining body
- support dressing
- sensing
- 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
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- Measuring Fluid Pressure (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing comprises means for sensing the pressure, means for indicating the pressure sensed and an arrangement transfering the pressure sensed to said means for indicating the pressure. The means for sensing the pressure may have a first part borne by the support dressing and a second part movable relative to the first one and being urged against the body portion by a spring or the like, said second part being connected to an indicator cooperating with a graduation through a lever system. The means for sensing the pressure may, however, also comprise a cavity filled with an incompressible fluid, said cavity being defined by a wall being flexible at least in a range abutting the body portion.
The cavity is connected via a conduit system with a sight glass cooperating with a scale, or the hollow body enclosing the cavity acts on a displaceable part connected by a lever system to an indicator cooperating with a graduation.
An apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing comprises means for sensing the pressure, means for indicating the pressure sensed and an arrangement transfering the pressure sensed to said means for indicating the pressure. The means for sensing the pressure may have a first part borne by the support dressing and a second part movable relative to the first one and being urged against the body portion by a spring or the like, said second part being connected to an indicator cooperating with a graduation through a lever system. The means for sensing the pressure may, however, also comprise a cavity filled with an incompressible fluid, said cavity being defined by a wall being flexible at least in a range abutting the body portion.
The cavity is connected via a conduit system with a sight glass cooperating with a scale, or the hollow body enclosing the cavity acts on a displaceable part connected by a lever system to an indicator cooperating with a graduation.
Description
il7~821 "Apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing".
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for de-termining the pressure between a support dressing and a body portion surrounded by said support dressing.
With certain kinds of hurts, such as fractures, strains or the like, the body portion concerned is surrounded by a support dressing in order to provide a splinting, to maintain motionless this body portion and to ensure a recovery of the fracture in the correct position of the fragments at the point of the fracture. Generally, a plaster of Paris dressing or another rigid dressing producing a suitable splinting of the body portion concerned is used as a support dressing. It is a disadvantage of this procedure that normally this body portion swells up within the first time after application of the support dressing, whereby the swellin~ can assume such an amount that the related limb is tied off so strongly by the inflexible support dressing that an irreversible derangement and in extreme cases even a mortification of said limb ma~ be provoked.
In order to avoid this drawback it i9 known to split the support dressing in the first instance and to bend it up when the swelling occurs so that the swollen limb has room within ' 1:t7~8Z~
the support dressing, and only to apply a closed plaster of Pari~ dressing after termination of the swelling. By such a plaster of Paris dressing being split the disadvantage is produce~ that the body portion concerned is insufficiently su~ported, in particular when the swelling does not occur early to the extent expected or when it fades/away. Then, the frag-ments can displace themselves at the point of fracture and the desired curing o~ the fracture is no more ensured.
SUM~ARY 0~ ~HE I~VE~TION
It is an object of the invention to provide an apparatus by which a continuous surveillance of the course of the pressure is made possible either by the patient himself or by a super-visor. ~hereb~ especially an increase of the pressure should be recognized so early that there remains enough time to visit a doctor or a hospital.
It is a further object of the invention to provide a small sized apparatus to be accommodated in the support dressing.
The apparatus according to the invention shall make it possible not only to deter~ine an inadmissible increase of presqure, but also a decrease of the pressure below a predetermined value, since in this case a sufficient support of the body portion is no longer accomplished. Moreover, the apparatus according to the invention shall enable an adjustment so that starting from a basic value positioned by the adjustment, an increase or a decrease of the pressure as well as the relative amount of
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for de-termining the pressure between a support dressing and a body portion surrounded by said support dressing.
With certain kinds of hurts, such as fractures, strains or the like, the body portion concerned is surrounded by a support dressing in order to provide a splinting, to maintain motionless this body portion and to ensure a recovery of the fracture in the correct position of the fragments at the point of the fracture. Generally, a plaster of Paris dressing or another rigid dressing producing a suitable splinting of the body portion concerned is used as a support dressing. It is a disadvantage of this procedure that normally this body portion swells up within the first time after application of the support dressing, whereby the swellin~ can assume such an amount that the related limb is tied off so strongly by the inflexible support dressing that an irreversible derangement and in extreme cases even a mortification of said limb ma~ be provoked.
In order to avoid this drawback it i9 known to split the support dressing in the first instance and to bend it up when the swelling occurs so that the swollen limb has room within ' 1:t7~8Z~
the support dressing, and only to apply a closed plaster of Pari~ dressing after termination of the swelling. By such a plaster of Paris dressing being split the disadvantage is produce~ that the body portion concerned is insufficiently su~ported, in particular when the swelling does not occur early to the extent expected or when it fades/away. Then, the frag-ments can displace themselves at the point of fracture and the desired curing o~ the fracture is no more ensured.
SUM~ARY 0~ ~HE I~VE~TION
It is an object of the invention to provide an apparatus by which a continuous surveillance of the course of the pressure is made possible either by the patient himself or by a super-visor. ~hereb~ especially an increase of the pressure should be recognized so early that there remains enough time to visit a doctor or a hospital.
It is a further object of the invention to provide a small sized apparatus to be accommodated in the support dressing.
The apparatus according to the invention shall make it possible not only to deter~ine an inadmissible increase of presqure, but also a decrease of the pressure below a predetermined value, since in this case a sufficient support of the body portion is no longer accomplished. Moreover, the apparatus according to the invention shall enable an adjustment so that starting from a basic value positioned by the adjustment, an increase or a decrease of the pressure as well as the relative amount of
- 2 -~ ~7~21 these values in relation to the adjusted basic value may be determined in a simple manner.
Finaly, it is an object of the present invention to build up the apparatus in such a manner that the essential components of the apparatus could be removed when a surveillance of the pressure is no longer necessary, and could be applied to another patient without damaging thereby the support dressing.
~R~EF D~SCRIP~ION OF THE DRAWI~GS
~ he invention is schematically illustrated in the accom-panying drawings by me~ns of some embodiments.
Fig. 1 shows a longitudinal section of a retaining body of an apparatus according to the invention anchored in a support dressing;
Fig. 2 represents an ambodiment of an apparatus acco~din~
to the invention anchored in a support dressing;
Fig. 3 is a plan view onto Fig. 2 wherein the support dressing is omitted;
Fig. 4 shows a longitudinal section of a further embodi-ment of an apparatus according to the invention 2Q anchored in a support dressing;
Fig. 5 is a topview onto ~ig. 4; and the ~igs.6 and 7 show further variants of the apparatus according to the invention in respective longitudinal sections.
11~.'~8Zl DESCRIPTION 0~ ~HE PRE~'ERRED E~BODI~iENTS
In a support dressing 1, for instance being a plaster of Paris dressing or another rigid dressing, a retaining body 2 is anchored that is formed by a socket. The socket is provided with a thread 3 and has projections on its periphery. ~hese projections may be formed by flute-defining peaks 4. Instead of these flute-defining peaks 4 or additionally to the same flukes 5, for instance of plastic material, may be mounted at the lower end of the retaining body, thus likewise forming projections. ~he flute-defining peaks 4 as well as the flukes 5 ensure a secure and immovable anchoring of the retaining body 2 within the support dressing 1 when the same has been solidified.
The ~lukes 5 bearing the retaining body ? prop against the body portion during the application of the support dressing so that the retaining body 2 takes the desired position.
Into the internal thread 3 of the retaining body 2 either the external thread of a filling body or the external thread of a housing 10 may be screwed, the latter containing means for sensing the pressure, means for indicating the pressure sensed and an arrangement through which the pressure sensed is trans-feredOto said means for indicating thi~ pressure. This design makes it pos~ible, first only to anchor the retaining body 2 in the support dressing. ~he opening within the retaining body 2, wherein then the housing 10 is screwed~ is suitably closed by the filling body during this procedure. In this way the penetrating of liquid plaster or the like into the interior of -1~788;~1 the retaining body 2 is preYented. When the support dressing has been solidified, the filling body is screwed out and the housing lO is inserted. By screwing the housing more or less deep into the retaining body 2 ~n adjustment of the apparatus for indicating the pressure sensed may be effected. ~urthermore, this arrangement has the advantage that the housing lO may be screwed out of the retaining body 2 after the swelling has been faded away, and may be applied anew for another patient without damaging the support dressing l when removing the housing lO. Then, on]y the retaining body 2 remains in the support dressing l whereby the opening may be closed again by the filling body.
~ he internal thread 3 of the retaining body 2 and the external thread of the housing lO cooperating with it suitably are formed as a fine thread, thus facilitating the adjustment.
The filling body should extend up to the lower end of the retaining body 2 so that the thread 3 is protected over its whole length and that after removal of the housing lO an oedema may not be caused by ~he cavity thus formed.
The adjusted position of the housing lO within the retaining body 2 is secured in the manner decribed below in detail so that an undesired misadjustment of the housing lO i9 not possible.
~he means for sensing the pressure of the apparatus according to the invention a~ shown in ~igs. 2 and 3 have an insert element 13 slidably arranged within the housing lO which is secured against dropping out by a yarn 14 or the like and which is reset into its inoperative position by a spring 15.
, ., .. . . . _ . . . . .
117~821 The insert element 13 is connected to an indicating device 17 through a lever system 16, said indicating device 17 being passed through a slot 18 in the front wall of the housing 10 and being bent to fo~m an indicator 19 at its end protruding ~rom the slot 18. This indicator 19 cooperates with a graduation 20 applied to the outer surface of the front wall of the housing 10.
This graduation 20 is divided into three ranges 21, 22 and 23.
In this connection the arrangement may be such that for instance then, when the indicator 19 is within the range 21, there is a too low pressure between the support dressing and the body portion, when the indicator 19 is positioned within the range 22 it indicates the pressure desired, and when the indicator 19 reaches the range 23, there is a pressure making necessary a medical intervention. ~he arrangement, however, may also be such that the range 21 corresponds to the normal pressure and the range 22 limits a pressure o~ tolerable values, whereas the range 23 defines the critical range wherein the doctor has to take precautionary measures. In each case the housing has to be screwed so deeply into the retaining body 2 that with 20 normal pressures the indicator is about the center of that range defining the normal pressure.
Afterwards, the position of the housing 10 is secured in accordance with the Figs. 2 and 3 by a lock nut 25 so that the housing 10 can no longer be twisted.
~he indicator 19 and the graduation 20 are covered by a glass 24 formed as a magnifying lens so that the pressure Yalues represented are clearly distinguishable although the , .
1~'7~21 dimensions of the apparatus are small.
In the embodiment according to the Figs. 4 and 5 the means for sensing the pressure comprise a hollow body 26 located within the housing 10, having flexible walls and protruding from the lower side of the housing, thus abutting against the body portion. The hollow body 26 is filled with an incompressible fluid and is connected through a conduit with a sight glass 28 wherein the end of the head of liquid is visible. The sight glass 28 likewise cooperates with a graduation 20 equally having the three above-mentioned ranges 21 to 23. ~y the pressure occurring with a swelling of the body portion and acting in the direction of the arrows onto the hollow body 26 having flexible walls, the head of liquid within the sight glass 28 is displaced, whereby the change of pressure is visible on the graduation 20.
Also with the apparatus shown in Figs. 4 and 5 an adjust-ment may be effected in that the housing 10 is screwed into the retaining body 2 so deeply that the end of the head of liquid is just at the center of that range of the graduation 20 which is limited by those values between which the pressure may vary without affecting the patient. The adjusted pasition of the housing 10 is secured in the embodiment according to Figs. 4 and 5 by a fixing scr~w 29 screwed in the housing 10 at the front wall and cooperating with the front wall of the reta~ning body 2, rather than by a lock nut.
In the embodiment ac^ording to Figs. 2 and 3, it may occur that then, when the pressure does not act in sliding direction il7~821 of the insert element 13, the same may become jammed, thus indicating incorrect pressure values. In order to avoid this, the insert element 13 in conformity with ~ig. 6 i~ biased via a hollow body 30 having flexible walls. An incompressible fluid is in the hollow body, as before. That area of the wall of the hollow body which abuts against the body ~ortion is curved.
~his embodiment ensures that pressures acting onto the hollow body 30 from different directions are transfered in sliding direction onto the insert element 13, thus preventing a ja~ming of the latter.
In a hollow body 31 of the embodiment according to ~ig. 7 which abuts with a flexible wall against the body portion, as before, a piston 32 is provided being biased Qn one side by a fluid within the hollow body 31 and on the other side by a spring 33. A piston rod 34 passing through an opening of the hollow body 31 i9 connected with an indicating device 17 passed through the slot 18 in the front wall of the housing and being bent to form an indicator 19 at its end projecting from this slot, just as in the embodiment of ~igs. 2 and 3.
The indicator 19 again cooperates with a graduation 20 covered by a glass 24 formed as a magnifying lens, The position of the housing 10 in relation to the retaining body 2 in this embodiment is ensured again by a lock nut 25, but, of course, instead of the lock nut 25 also a fixing screw 29 may be provided.
Finaly, it is an object of the present invention to build up the apparatus in such a manner that the essential components of the apparatus could be removed when a surveillance of the pressure is no longer necessary, and could be applied to another patient without damaging thereby the support dressing.
~R~EF D~SCRIP~ION OF THE DRAWI~GS
~ he invention is schematically illustrated in the accom-panying drawings by me~ns of some embodiments.
Fig. 1 shows a longitudinal section of a retaining body of an apparatus according to the invention anchored in a support dressing;
Fig. 2 represents an ambodiment of an apparatus acco~din~
to the invention anchored in a support dressing;
Fig. 3 is a plan view onto Fig. 2 wherein the support dressing is omitted;
Fig. 4 shows a longitudinal section of a further embodi-ment of an apparatus according to the invention 2Q anchored in a support dressing;
Fig. 5 is a topview onto ~ig. 4; and the ~igs.6 and 7 show further variants of the apparatus according to the invention in respective longitudinal sections.
11~.'~8Zl DESCRIPTION 0~ ~HE PRE~'ERRED E~BODI~iENTS
In a support dressing 1, for instance being a plaster of Paris dressing or another rigid dressing, a retaining body 2 is anchored that is formed by a socket. The socket is provided with a thread 3 and has projections on its periphery. ~hese projections may be formed by flute-defining peaks 4. Instead of these flute-defining peaks 4 or additionally to the same flukes 5, for instance of plastic material, may be mounted at the lower end of the retaining body, thus likewise forming projections. ~he flute-defining peaks 4 as well as the flukes 5 ensure a secure and immovable anchoring of the retaining body 2 within the support dressing 1 when the same has been solidified.
The ~lukes 5 bearing the retaining body ? prop against the body portion during the application of the support dressing so that the retaining body 2 takes the desired position.
Into the internal thread 3 of the retaining body 2 either the external thread of a filling body or the external thread of a housing 10 may be screwed, the latter containing means for sensing the pressure, means for indicating the pressure sensed and an arrangement through which the pressure sensed is trans-feredOto said means for indicating thi~ pressure. This design makes it pos~ible, first only to anchor the retaining body 2 in the support dressing. ~he opening within the retaining body 2, wherein then the housing 10 is screwed~ is suitably closed by the filling body during this procedure. In this way the penetrating of liquid plaster or the like into the interior of -1~788;~1 the retaining body 2 is preYented. When the support dressing has been solidified, the filling body is screwed out and the housing lO is inserted. By screwing the housing more or less deep into the retaining body 2 ~n adjustment of the apparatus for indicating the pressure sensed may be effected. ~urthermore, this arrangement has the advantage that the housing lO may be screwed out of the retaining body 2 after the swelling has been faded away, and may be applied anew for another patient without damaging the support dressing l when removing the housing lO. Then, on]y the retaining body 2 remains in the support dressing l whereby the opening may be closed again by the filling body.
~ he internal thread 3 of the retaining body 2 and the external thread of the housing lO cooperating with it suitably are formed as a fine thread, thus facilitating the adjustment.
The filling body should extend up to the lower end of the retaining body 2 so that the thread 3 is protected over its whole length and that after removal of the housing lO an oedema may not be caused by ~he cavity thus formed.
The adjusted position of the housing lO within the retaining body 2 is secured in the manner decribed below in detail so that an undesired misadjustment of the housing lO i9 not possible.
~he means for sensing the pressure of the apparatus according to the invention a~ shown in ~igs. 2 and 3 have an insert element 13 slidably arranged within the housing lO which is secured against dropping out by a yarn 14 or the like and which is reset into its inoperative position by a spring 15.
, ., .. . . . _ . . . . .
117~821 The insert element 13 is connected to an indicating device 17 through a lever system 16, said indicating device 17 being passed through a slot 18 in the front wall of the housing 10 and being bent to fo~m an indicator 19 at its end protruding ~rom the slot 18. This indicator 19 cooperates with a graduation 20 applied to the outer surface of the front wall of the housing 10.
This graduation 20 is divided into three ranges 21, 22 and 23.
In this connection the arrangement may be such that for instance then, when the indicator 19 is within the range 21, there is a too low pressure between the support dressing and the body portion, when the indicator 19 is positioned within the range 22 it indicates the pressure desired, and when the indicator 19 reaches the range 23, there is a pressure making necessary a medical intervention. ~he arrangement, however, may also be such that the range 21 corresponds to the normal pressure and the range 22 limits a pressure o~ tolerable values, whereas the range 23 defines the critical range wherein the doctor has to take precautionary measures. In each case the housing has to be screwed so deeply into the retaining body 2 that with 20 normal pressures the indicator is about the center of that range defining the normal pressure.
Afterwards, the position of the housing 10 is secured in accordance with the Figs. 2 and 3 by a lock nut 25 so that the housing 10 can no longer be twisted.
~he indicator 19 and the graduation 20 are covered by a glass 24 formed as a magnifying lens so that the pressure Yalues represented are clearly distinguishable although the , .
1~'7~21 dimensions of the apparatus are small.
In the embodiment according to the Figs. 4 and 5 the means for sensing the pressure comprise a hollow body 26 located within the housing 10, having flexible walls and protruding from the lower side of the housing, thus abutting against the body portion. The hollow body 26 is filled with an incompressible fluid and is connected through a conduit with a sight glass 28 wherein the end of the head of liquid is visible. The sight glass 28 likewise cooperates with a graduation 20 equally having the three above-mentioned ranges 21 to 23. ~y the pressure occurring with a swelling of the body portion and acting in the direction of the arrows onto the hollow body 26 having flexible walls, the head of liquid within the sight glass 28 is displaced, whereby the change of pressure is visible on the graduation 20.
Also with the apparatus shown in Figs. 4 and 5 an adjust-ment may be effected in that the housing 10 is screwed into the retaining body 2 so deeply that the end of the head of liquid is just at the center of that range of the graduation 20 which is limited by those values between which the pressure may vary without affecting the patient. The adjusted pasition of the housing 10 is secured in the embodiment according to Figs. 4 and 5 by a fixing scr~w 29 screwed in the housing 10 at the front wall and cooperating with the front wall of the reta~ning body 2, rather than by a lock nut.
In the embodiment ac^ording to Figs. 2 and 3, it may occur that then, when the pressure does not act in sliding direction il7~821 of the insert element 13, the same may become jammed, thus indicating incorrect pressure values. In order to avoid this, the insert element 13 in conformity with ~ig. 6 i~ biased via a hollow body 30 having flexible walls. An incompressible fluid is in the hollow body, as before. That area of the wall of the hollow body which abuts against the body ~ortion is curved.
~his embodiment ensures that pressures acting onto the hollow body 30 from different directions are transfered in sliding direction onto the insert element 13, thus preventing a ja~ming of the latter.
In a hollow body 31 of the embodiment according to ~ig. 7 which abuts with a flexible wall against the body portion, as before, a piston 32 is provided being biased Qn one side by a fluid within the hollow body 31 and on the other side by a spring 33. A piston rod 34 passing through an opening of the hollow body 31 i9 connected with an indicating device 17 passed through the slot 18 in the front wall of the housing and being bent to form an indicator 19 at its end projecting from this slot, just as in the embodiment of ~igs. 2 and 3.
The indicator 19 again cooperates with a graduation 20 covered by a glass 24 formed as a magnifying lens, The position of the housing 10 in relation to the retaining body 2 in this embodiment is ensured again by a lock nut 25, but, of course, instead of the lock nut 25 also a fixing screw 29 may be provided.
Claims (22)
1. An apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing comprising:
a retaining body anchored immovably in said support dressing; means for sensing the pressure including a first part removably mounted in said retaining body in fixed relationship to said support dressing, and a second part movable relative to said first part in response to said pressure, biasing means urging said movable second part against said body portion;
means for indicating the pressure sensed by said sensing means; and a lever system connected between said movable second part and said indicating means for actuating said indicating means.
a retaining body anchored immovably in said support dressing; means for sensing the pressure including a first part removably mounted in said retaining body in fixed relationship to said support dressing, and a second part movable relative to said first part in response to said pressure, biasing means urging said movable second part against said body portion;
means for indicating the pressure sensed by said sensing means; and a lever system connected between said movable second part and said indicating means for actuating said indicating means.
2. An apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing comprising:
a retaining body anchored immovably in said support dressing; means for sensing the pressure removably mounted in said retaining body in fixed relationship to said support dressing including wall means defining a cavity, an imcompressible fluid in said cavity, said wall means having an area for abutting against said body portion and being flexible at least in said area;
means for indicating the pressure sensed by said sensing means; and means for transferring the pressure exerted on the fluid in said cavity to said indicating means.
a retaining body anchored immovably in said support dressing; means for sensing the pressure removably mounted in said retaining body in fixed relationship to said support dressing including wall means defining a cavity, an imcompressible fluid in said cavity, said wall means having an area for abutting against said body portion and being flexible at least in said area;
means for indicating the pressure sensed by said sensing means; and means for transferring the pressure exerted on the fluid in said cavity to said indicating means.
3. An apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing comprising:
a retaining body anchored immovably in said support dressing; means for sensing the pressure including a first housing part removably mounted in said retaining body in fixed relationship to said support dressing, and at least one second part movable relative to said first part in response to said pressure, means urging said movable second part against said body portion;
means for indicating the pressure sensed by said sensing means; and means operatively associated between said movable second part and said indicating means for actuating said indicating means.
a retaining body anchored immovably in said support dressing; means for sensing the pressure including a first housing part removably mounted in said retaining body in fixed relationship to said support dressing, and at least one second part movable relative to said first part in response to said pressure, means urging said movable second part against said body portion;
means for indicating the pressure sensed by said sensing means; and means operatively associated between said movable second part and said indicating means for actuating said indicating means.
4. Apparatus as claimed in claim 2, further comprising a conduit system connecting said cavity with said indicating means.
5. Apparatus as claimed in claim 3, wherein said indicating means comprise a sight glass connected with said conduit system, and scale means arranged within the range of said sight glass.
6. Apparatus as claimed in claim 2, further comprising a movable propping surface against which at least a portion of said wall means abuts, and a lever system connecting said propping surface with said indicating means.
7. Apparatus as claimed in claim 2, further comprising piston means in said cavity biased by said fluid, and piston rod means connecting said piston means with said indicating means.
8. Apparatus as claimed in claim 1 or 6, wherein said indicating means comprise indicator means connected with said lever system, and scale means disposed within the range of said indicator means.
9. Apparatus as claimed in claim 1, 2 or 3, further comprising housing means being common to said sensing means and said indicating means.
10. Apparatus as claimed in claim 1, 2 or 3, further comprising a retaining body to be anchored immovably in said support dressing for receiving removably at least said sensing means and for fixing the same, said retaining body comprising projection means protruding from its periphery for anchoring the retaining body in said support dressing.
11. Apparatus as claimed in claim 1, 2 or 3, further comprising housing means being common to said sensing means and said indicating means, said retaining body being formed by a socket provided at least partially with an internal thread, and said housing means being cylindrical and having an external thread to be screwed into said internal thread.
12. Apparatus as claimed in claim 1, 2 or 3, further comprising housing means being common to said sensing means and said indicating means, said retaining body being formed by a socket provided at least partially with an internal thread, and said housing means being cylindrical and having an external thread to be screwed into said internal thread, said apparatus further comprising lock nut means screwed onto said housing means for securing their position in relation to said socket.
13. Apparatus as claimed in claim 1, 2 or 3, further comprising housing means being common to said sensing means and said indicating means, and locking screw means for securing said housing means in said retaining body.
14. Apparatus as claimed in claim 1, 2 or 3, further comprising a retaining body to be anchored immovably in said support dressing for receiving removably at least said sensing means and for fixing the same, and a filling body for insertion into said retaining body instead of said sensing means.
15. Apparatus as claimed in claim 2, wherein said area of said wall means defining the cavity for abutting against said body portion, is curved.
16. Apparatus as claimed in claim 5, wherein said scale means are divided into three ranges.
17. Apparatus as claimed in claim 5, further comprising magnifying lens means covering said scale means.
18. Apparatus as claimed in claim 1, 2 or 3, further comprising a retaining body to be anchored immovably in said support dressing for receiving removably at least said sensing means and for fixing the same, said retaining body being formed by a socket provided at least partially with an internal thread, and said housing means being cylindrical and having an external thread to be screwed into said internal thread.
19. Apparatus as claimed in claim 1, 2 or 3, further comprising a retaining body to be anchored immovably in said support dressing for receiving removably at least said sensing means and for fixing the same, said retaining body being formed by a socket provided at least partially with an internal thread, and said housing means being cylindrical and having an external thread to be screwed into said internal thread, said apparatus further comprising lock nut means screwed onto said housing means for securing their position in relation to said socket.
20. Apparatus as claimed in claim 1, 2 or 3, further comprising a retaining body to be anchored immovably in said support dressing for receiving removably at least said sensing means and for fixing the same, and locking screw means for securing said housing means in said retaining body.
21. Apparatus as claimed in claim 1 or 6, wherein said indicating means comprise indicator means connected with said lever system, and scale means disposed within the range of said indicator means, said scale means being divided into three ranges.
22. Apparatus as claimed in claim 1 or 6, wherein said indicating means comprise indicator means connected with said lever system, and scale means disposed within the range of said indicator means, said apparatus further comprising magnifying lens means covering said scale means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399065A CA1178821A (en) | 1982-03-23 | 1982-03-23 | Apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399065A CA1178821A (en) | 1982-03-23 | 1982-03-23 | Apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1178821A true CA1178821A (en) | 1984-12-04 |
Family
ID=4122369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399065A Expired CA1178821A (en) | 1982-03-23 | 1982-03-23 | Apparatus for determining the pressure between a support dressing and a body portion surrounded by said support dressing |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1178821A (en) |
-
1982
- 1982-03-23 CA CA000399065A patent/CA1178821A/en not_active Expired
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