WO2005067999A2 - Distribution de fluide - Google Patents

Distribution de fluide Download PDF

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Publication number
WO2005067999A2
WO2005067999A2 PCT/GB2005/000086 GB2005000086W WO2005067999A2 WO 2005067999 A2 WO2005067999 A2 WO 2005067999A2 GB 2005000086 W GB2005000086 W GB 2005000086W WO 2005067999 A2 WO2005067999 A2 WO 2005067999A2
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
supply
drain
enclosed space
conduit
Prior art date
Application number
PCT/GB2005/000086
Other languages
English (en)
Other versions
WO2005067999A3 (fr
Inventor
Rassoulian Hamid
Original Assignee
Centripeta Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB0400646A external-priority patent/GB0400646D0/en
Priority claimed from GB0423810A external-priority patent/GB0423810D0/en
Application filed by Centripeta Limited filed Critical Centripeta Limited
Publication of WO2005067999A2 publication Critical patent/WO2005067999A2/fr
Publication of WO2005067999A3 publication Critical patent/WO2005067999A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0233—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs
    • A61M3/0254—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being pumped
    • A61M3/0258—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being pumped by means of electric pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/77—Suction-irrigation systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
    • A61M3/0216—Pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0279—Cannula; Nozzles; Tips; their connection means
    • A61M3/0283—Cannula; Nozzles; Tips; their connection means with at least two inner passageways, a first one for irrigating and a second for evacuating

Definitions

  • the present invention relates to apparatus for and a method of delivering fluid, particularly, but not exclusively, to supplying fluid to, or withdrawing fluid from, the inside of a container or pipe, for example a collapsible tube, lumen or container.
  • the invention may also relate to the removal in an obstruction formed in a tube or pipe.
  • the invention also non-exclusively relates to an insert useful for the delivery of fluid.
  • Intestinal obstruction is a known medical problem in mammals.
  • Such obstructions may be defined as mechanical obstructions or non-mechanical obstruction (ileus), where the wavelike contractions of the intestine which move food through the digestive tract have stopped, and mechanical obstructions.
  • intussusception may be caused by hernias, impacted faeces, abnormal tissue growth, foreign bodies, inflammatory bowel disease or where the bowel or large intestine twists on itself (volvulus) or telescopes into itself (invagination), both of which latter indications may fall under the term intussusception.
  • intussusception is a painful and sometimes life-threatening condition. In small children, particularly infants, it is of a particular concern. If intussusception is not treated promptly, it can lead to necrosis of the affected part of the digestive tract and to subsequent gangrene forming in that part, necessitating removal by surgery.
  • a medical practitioner When a person is suspected of suffering from intussusception a medical practitioner will usually order an X-ray, a computed tomography (CT) scan or ultrasound evaluation of the abdomen to locate the obstruction, barium or air enema may be used as contrast (media) material to aid the location of the obstruction.
  • CT computed tomography
  • media contrast
  • a rectal tube In some cases of volvulus, the insertion of a rectal tube can straighten the twisted bowel. Also, in many cases of invagination, a barium or air enema may reverse the blockage. However, if these (non-surgical) processes are not successful it is necessary to resort to surgery.
  • the fluid must be supplied at a correct pressure and at an appropriate flow rate.
  • this is done by a senior doctor using a 'makeshift' apparatus comprising a hand pump or high pressure gas outlet with suitable pressure bleeds. It may be done 'blind' or by measuring the progress of the procedure using a sequence of images, for example using X-rays. In either case there is clearly a need for bespoke equipment which removes or at least restricts the likelihood of perforation occurring during the procedure.
  • Air is also forced in closed 'containers' during other surgical procedures.
  • endoscopic examination or surgery in the abdominal cavity often requires air to be forced into the oesophagus, stomach and duodenum.
  • Laparoscopy often requires a gas (e.g. N 2 O or CO 2 ) to be forced into the abdomen.
  • Foley-type or other rectal and urinary catheters are used to supply fluid to the rectum, which have means (e.g. an inflatable bladder) to retain the device within the rectum and provide a fluid seal.
  • these catheters have a narrow tip to facilitate insertion into the rectum however the drain passage needs to be wide enough to allow draining fluid and any entrained matter to drain successfully.
  • Some catheters seek to address this problem by providing a solid, narrow, tip with drain holes further down the body of the device. Whilst this may allow fluid to drain, the holes can easily become occluded with solid or semi-solid matter which is entrained in the draining fluid. In the case of intussusception, a blocked catheter will require removing and replacing, thereby causing obvious discomfort to the patient and unnecessarily complicating the procedure.
  • Colostomy bags may be fitted to people to allow faeces to drain from the body after a person has suffered from inter alia, colon cancer, bowel infection or inflammation.
  • the bag is fitted by cutting the abdomen and bringing the colon through the incision and is then attached to the skin by stitches.
  • a hole is made in the colon (a stoma) and a drainage bag is attached to the skin surrounding the stoma into which faeces will drain.
  • a device which may be secured to the ear for application of a cleansing fluid and which may be sealed to allow the patient to be mobile is required.
  • a first aspect of the invention provides apparatus for the supply of fluid to and/or the withdrawal of fluid from an enclosed space, the apparatus comprising first and second members separable from one another and aligned on a common axis to provide a tubular body having a first end and a second leading end formed as a tapered tip, the first member having a fluid-flow passage therethrough; and further comprising means arranged to engage a wall or walls of the enclosed space when the apparatus is engaged therewith.
  • said engagement means comprises a flexible wall which is axially compressible to form an outwardly or inwardly extending peripheral flange.
  • Said engagement means may be provided on, in and/or about the first member.
  • the first member may have a proximal end defined by a rigid wall and a distal end defined by a or the flexible wall, the distal end being axially compressible to cause the flexible wall to form a flange around the periphery of first member.
  • the second member may extend through the bore of said first member and may close the bore of the first member when inserted therein.
  • the first member may comprise an outwardly-directed peripheral flange which, upon insertion of the second member into the bore, is caused to deform and become flat.
  • the flange is biased towards the 'flanged' condition.
  • Said engagement means may comprise a continuous cylinder of uniform or non-uniform thickness.
  • Said engagement means may comprises ribs arranged to provide additional strength. This part may have cut-outs so that the flange that is formed or provided can extend out further. Instead of cut-outs there may be ribs and or a set of thin and thick sections to allow expansion (formation) of the flange with added strength.
  • Said engagement means may comprise one or more elongate strips arranged axially along the apparatus and around the periphery thereof.
  • the apparatus may have an outer wall which is continuously tapered along its length, from proximal end of first member to tapered tip of second member, or it may present a stepped profile having one or more reducing steps along its length between, say, a or the proximal end of the first member to the tapered tip, the surfaces between or adjacent the stepped portions being substantially parallel to the common axis and/or a mixture of the two forms.
  • the first member has a stepped outer profile, the proximal end preferably being wider than the distal end.
  • the first member may have a single peripheral shoulder between the distal and proximal ends to provide an abutment means to prevent or inhibit insertion of the apparatus into the enclosed space.
  • the apparatus may further comprise a movable member located between said first and second members and aligned on the common axis.
  • the movable member extends through the fluid flow passage of the first member and is provided with a fluid-flow passage therethrough.
  • the movable member may be movable along the common axis.
  • the movable member may comprise a flange portion at or towards one end thereof.
  • the flange portion of the movable member is connected to and extends beyond the distal end of said first member.
  • the outer periphery of the flange of the third member may be tapered so as to provide an outer surface which, preferably, narrows from the point of connection to said first member.
  • the apparatus may further comprise a further member located between said first and second members and aligned on the common axis.
  • the further member may have a fluid flow passage therethrough and may extend through the fluid flow passage of the first member and, when present, may extend through the fluid flow passage of said movable member.
  • the further member may comprise a stepped or tapered outer profile. Preferably, the further member is removeable from said insert.
  • the tapered tip may be closed or may be open.
  • the apparatus may also comprise lock means, preferably located beyond the proximal end of said first member.
  • lock means is arranged to engage a proximal end of said movable member.
  • said movable member is movable, axially along the apparatus (e.g. relative to the first member), between a first, relatively inboard, position and a second, relatively outboard, position wherein the proximal end of said further member extends beyond the proximal end of said first member.
  • said lock means is engageable with a proximal end of said movable member when said movable member is in the relatively outboard position.
  • Said flexible wall is preferably arranged to form said peripheral flange when said movable member is in the relatively outboard position.
  • a further aspect of the invention provides apparatus to aid diagnosis and/or treatment of intussusception, the apparatus comprising first and second members seperable from one another and aligned on a common axis to provide a tubular body having a first end and a second leading end formed as a tapered tip, the first member having a fluid-flow passage therethrough and comprising means arranged to engage the wall or walls of the enclosed space when the apparatus is inserted therein.
  • a third aspect of the invention provides a method of supplying a fluid to and/or withdrawing fluid from a being, for example for treating intussusception, using apparatus comprising first and second members seperable from one another and aligned on a common axis to provide a tubular body having a first end and a second, leading end formed as a tapered tip, the first member having a fluid-flow passage therethrough and comprising means arranged to engage the wall or walls of the enclosed space when the apparatus is inserted therein, the method comprising inserting the apparatus, tapered tip first into the being, for example the rectum of a being, until said second member is no longer in contact with the being, for example the rectum, removing said second member from the apparatus, causing said engagement means to engage the wall or walls of the enclosed space and supplying or withdrawing fluid through the fluid-flow passageway.
  • said engagement means comprises an axially compressible flexible wall arranged to form an outwardly extending flange upon compression of the flexible wall, said method comprising compressing the flexible wall to form the flange and thereby provide a seal against, to or with the enclosed space, for example the rectum.
  • the method may further comprise taking images of the being's abdomen whilst supplying fluid thereto.
  • the method may further comprise arresting the supply of fluid and allowing fluid to drain from the being's bowel, through the insert, together with any entrained matter.
  • a yet further aspect of the invention provides fluid supply and drain apparatus, the apparatus comprising a fluid source connected to a fluid supply conduit provided with pressure bleed means and pressure monitoring means, a supply and drain channel connected to the supply conduit and a drain conduit connected to the supply and drain channel, the channel having a connection port for connection to second apparatus through which a or the fluid may be supplied to, and drained from, an enclosed space, the apparatus further comprising switch means operable to close the drain conduit when the supply conduit is open.
  • the drain conduit may be connected to a reservoir for drained fluid and any other entrained matter.
  • said pressure bleed means comprises a poppet valve.
  • Said switch means may comprise a pinch valve.
  • said switch means comprises a pinch valve and a switch, the switch operable to cause fluid to flow from the source toward the supply and drain channel and the pinch valve operable to close the drain conduit.
  • Said switch means may comprise a pinch valve which operates on the drain conduit and a microswitch simultaneously.
  • the microswitch when activated, turns the fluid source (e.g. pump) on and when deactivated turns the fluid source (e.g. pump) off.
  • the pinch valve when the pinch valve is operated the drain conduit is closed and the supply is turned on so that fluid flows through the supply conduit into the body.
  • the microswitch opens, the supply is shut off and the drain is also open.
  • An advantage of this embodiment is that the supply conduit also provides a drain conduit which reduces the risks associated with matter blocking the drain. In this way the apparatus incorporates two different drain conduits, one of which becomes the supply conduit when fluid is to be supplied to the body.
  • the supply conduit may comprise a supply reservoir and/or filter means between said pressure regulator and the drain and supply channel.
  • said filter means allows the passage of gas but not liquid or solid matter.
  • the drain conduit may be of a greater bore than the supply conduit.
  • said poppet valve is set to a maximum pressure of 0.163 kgf cm “2 (120 mm Hg).
  • said switch means may comprise a pair of pinch valves, one operable to close the supply conduit and one operable to close the drain conduit, the operation of which being mutually exclusive to ensure that only one of the drain or the supply conduits are open at any one time.
  • the drain conduit may be of a greater bore than the supply conduit.
  • a yet further aspect of the invention provides a combination of an apparatus for supplying fluid to an enclosed space as described above and a fluid supply and drain apparatus as described above, the supply and drain channel being connected to said proximal end of said first member of the insert with the insert located in the opening of an enclosed space.
  • Figure 1 is a side elevation of the insert of the invention
  • Figure 2 is a perspective view of the insert of Figure 1
  • Figure 3 is a perspective view of part of the insert of Figure 1
  • Figure 4 is a perspective view of a further part of the insert of Figure 1
  • Figure 4A is a perspective view of a variation of the part of Figure 4
  • Figure 5 is a perspective view of part of the insert of Figure 1 in operation
  • Figure 6A is a schematic diagram of a first fluid supply and drain apparatus of the invention
  • Figure 6B is a schematic diagram of a second fluid supply and drain apparatus of the invention.
  • an insert 1 for the supply of fluid to, and withdrawal of fluid from, an enclosed space, the insert 1 having a first end 2 and a second end 3 and having a shaped profile which reduces in width between the first and second ends 2, 3 and has a continuous uninterrupted external surface 4.
  • the insert 1 is composed of four parts 10, 11 , 12, 13 aligned, concentrically, on the same common axis. As shown, and starting from the second end 3, the last, fourth, part 13 has a tapered tip 130 and a solid elongate outer body 131 which extends the full length of the insert 1.
  • the next, third, part 12 is a hollow body 121 with a bore which is sized to accept the elongate body 131 of the last, fourth, part 13.
  • the third part 12 extends from the commencing edge of the tapered tip 130 through the rest of the insert 1.
  • the third 12 and fourth 13 parts are seperable and movable axially with respect to one another.
  • Figure 3 shows the third and fourth parts 12, 13 removed from the insert 1.
  • a proximal end 122 of the third part 12 is a catch portion 123 provided with a recess 124.
  • a proximal end 132 of the fourth part 13 is mounted to a proximal end 132 of the fourth part 13 which can engage the recess 124 of the catch portion 123, the purpose of which will be described below.
  • the second part 11 is a hollow body 111 which extends through the bore of the hollow body 101 of the first part 10.
  • the first part 10 has a proximal end 102 which is formed from a relatively inflexible or rigid material and a distal end 103 which is formed from a flexible material.
  • the second part 11 is fixed or joined (for example welded or adhered) to the terminal edge of the flexible distal end 103 of the first part 10 and is axially movable with respect to the first part 10.
  • the proximal end 112 of the second part 11 carries a pawl 113 and a circumferential abutment surface 200.
  • the pawl 113 is arranged to engage a second recess 126 of the catch 123, to ensure that the parts 10, 11, 12, 13 remain together during insertion, as will be explained below.
  • Figure 4A shows a variation of the first part of an insert 1 , wherein the first part
  • the 10' has the same outer form as the first-described first part 10 but is provided with longitudinal ribs 109 along the inner surface thereof.
  • the ribs 109 provide the part 10' with extra strength and/or resilience.
  • the exposed section of the third part 12 (i.e. the distal end between the tapered tip 130 of the fourth part and the distal edge of the second part 11) has a tapered profile 125.
  • the exposed section of the second part 11 (i.e. the distal end 112 between the exposed section of the third part 12 and the terminal edge of the distal end 103 of the first part 10) has a tapered or stepped profile 115.
  • the first part 10 has a step 105 between its proximal 102 and distal 103 ends. The various steps and tapers provide the continuous surface 4 which is wider at the proximal end 102 of the first part 10 and decreases in width towards the second end 3 and the tapered tip 130.
  • the insert 1 is useful in the treatment of intussusception of a living being, as follows.
  • the complete, usually lubricated, insert 1 (as shown in Figure 1) is inserted into the rectum of a being, tapered tip 130 first.
  • the tapered tip 130 will eventually be out of contact with the wall of the rectum, at which point pawl 133 may be disengaged from the recess 124 of the catch 123 and the fourth part 13 pulled out of the insert 1.
  • the rectum is being held open by the wall of the third part 12 of the insert 1.
  • the insert may then be inserted further into the rectum until the wall of the third part 12 is no longer in contact with the wall of the rectum, at which point the third part 12 may be removed from the insert 1.
  • the second part 11 is moved axially out of the insert 1, thereby causing the flexible wall 103 of the first part 10 to bulge outwards and provide a peripheral flange 103a ( Figure 5) which is sized to abut the wall of the rectum and provide a fluid seal therewith.
  • a wedge or other spacer element (not shown) is inserted between the abutment flange 200 and the proximal end 102 of the first member 10 to ensure that the second member 11 continues to push against the wall 103 to provide the flange 103a (as shown in Figure 5), the resilient urging of the flexible wall 103 ensures that the flange 200 and first member 10 remain in engagement.
  • the flange 103a acts as both a fluid seal and as an anchor to ensure that the insert 1 remains in place during use.
  • the medical practitioner or other may supply fluid through the hollow bore of the second member and in to the rectum of the being to remove the intussusception.
  • Supplied fluid will drain through the bore of the second member (i.e. along the supply route).
  • this provides a large bore drain to allow any entrained matter to drain effectively and reducing the likelihood of any entrained matter from blocking the insert 1.
  • the outer surface 4 of the insert 1 is tapered and/or stepped the insertion of the insert 1 is eased. Also, because the third and fourth parts 12, 13 are removed, the depth of insertion of the insert 1 is not as great as with other catheters whilst providing a usable bore for the supply of fluid, thereby reducing the risk of internal damage and causing less discomfort than has previously been felt. Indeed, the distance between the shoulder 105 of the first part 10 and the terminal edge of the second part 11 is (for 1 year old human) from about 2 to 4 cm.
  • the first part 10 may be biased to having a flange
  • the pawl 113 is used to force and hold the flange into and in the 'straight' or 'flat' configuration, against the urging of the flange.
  • the first part 10 may comprise longitudinal slits or other cut-outs to enable the flange 103a to bulge outwardly further than in the non cut-out version.
  • the fluid supply apparatus 50 comprises an oil-less fluid pump 51 connected to a fluid supply conduit 52. Located along the fluid supply conduit are a poppet valve 53 and a pressure gauge 54.
  • the poppet valve 53 is set to the maximum pressure which is to be supplied from the apparatus 50 and the pressure gauge 54 allows the maximum pressure value to be set and for the pressure supplied to be monitored.
  • the fluid is supplied to the site of use (not shown) through a supply and drain channel 55 and is drained from the site of use through the supply and drain channel 55, through a drain conduit 56 and into a reservoir 57, usually in the form of a bag provided into which the conduit 56 drains which is provided with a further, filtered, opening to allow the escape of draining gases, but not liquids or solids and to prevent the build-up of pressure within the bag.
  • a double pinch valve 60 which operates to close or open either the supply conduit 52 or the drain conduit 56, but not both.
  • fluid is supplied from the pump 51 at a maximum desired pressure (as set by the poppet valve 53) through the channel 55 to a site of use.
  • the pinch valve 60 is operated to arrest the supply of fluid from the pump 51 and open the drain conduit 56. Because the site of use is a closed space the supplied fluid is under pressure and will drain through the channel 55, through the drain conduit 56 and into the reservoir 57. Clearly, any matter entrained with the draining fluid will drain to the reservoir 57 also. If the presence of entrained matter is likely, it will be usual to provide a drain conduit 56 which has a larger bore than the supply conduit 52.
  • FIG. 6B (identical integers to those described above in relation to Figure 6A have identical numerals but are denoted by the use of a prime (')) there is shown further fluid supply and drain apparatus 50' in which the double pinch valve 60 has been replaced by a single pinch valve and switch device 70. Also, located within the supply leg of the apparatus 50' is a filter 82, arranged to prevent the passage of solid matter and, in some embodiments, liquids, and a reservoir 81 , both of which are downstream of the pressure gauge 54'.
  • a filter 82 located within the supply leg of the apparatus 50' is a filter 82, arranged to prevent the passage of solid matter and, in some embodiments, liquids, and a reservoir 81 , both of which are downstream of the pressure gauge 54'.
  • the pinch valve and switch device 70 comprises a pinch valve to close or open the drain conduit 56' and a switch to turn the pump 51 ' on or off.
  • fluid is supplied to the site of use along the supply conduit 52' and to the supply and drain channel 55'.
  • the pinch valve has closed the drain conduit 65' and the switch is on to operate the pump 51'.
  • the supplied fluid passes through the filter 82 and the reservoir 81 before being supplied to the site of use (not shown).
  • the pinch valve When it is desired to drain the supplied fluid from the site of use, the pinch valve opens the drain conduit and the switch simultaneously stops operation of the pump 51'. Fluid in the site of use (which, again, is under pressure) is then free to drain through the drain conduit 56' and into the reservoir 57'.
  • Fluid is also free to drain through the supply conduit 52' and into the reservoir 81 but is prevented from flowing further along the supply conduit 52' by the filter 82.
  • the drain conduit 56' is of a much larger bore than the supply conduit 52' most, if not all of the supplied fluid will drain via the drain conduit 56'. If, however, the fluid at the site of use is subjected to a further pressure source some of the draining fluid may drain via the supply conduit 52' and will be collected in the supply reservoir 81.
  • the filter 82 will prevent cross-contamination of the upstream portion of the supply conduit 52 by entrained matter draining into the reservoir 82.
  • the poppet valve 53' will prevent a build up of pressure, in excess of the maximum desired supply pressure, in the supply conduit 52'.
  • Either of the disclosed fluid supply and drain apparatus 50, 50' may be used with the insert 1 previously described in the treatment of intussusception or supply of fluid to other parts of the body, or with other prior art catheters, such as urinary or rectal catheters of the Foley type which have separate supply and drain lumens, the supply conduit 52 being connected to the supply lumen and the drain conduit 56 being connected to the drain lumen.
  • the maximum pressure of fluid supplied will be about 120 mmHg, which has been determined as the maximum safe pressure to supply fluid to the bowels.
  • the fluid supply and drain channel 55, 55' will be connected to the insert 1 which is fully inserted into the rectum of the patient and fluid, usually air, will be supplied to the bowels. Fluid will be supplied for a period of time and then the supply will be arrested and the fluid (together with any entrained matter) allowed to drain from the bowels via the drain conduit 56, 56'.
  • Fluid may be supplied and drained in a plurality of pulses.
  • the supply and drain may be controlled by an automatic programmable controller or may be determined by a technician manually operating the supply/drain valve.
  • the progress of the procedure may be monitored in real time by the use of X- rays, ultrasound or CT scans. If 'real-time' or 'near-to-real-time' imaging is not available an image may be taken after or during every pulse of supplied fluid.
  • the trained medical practitioner will be able to watch the progress of the treatment and to watch the bowel either untwist or telescope out from within itself as the case may be.
  • an over-pressure of the bowel may be created by the patient coughing or crying (the diaphragm of the patient acting as a pump).
  • the second supply and drain apparatus 50' may be more suitable, the excess pressure being accommodated by using the supply conduit 52' as an alternative drain conduit.
  • the double pinch valve 60 or pinch valve and switch apparatus 70 may be replaced with any other suitable switch device, which will be known to the skilled addressee.
  • the poppet valve 53, 53' may be replaced with another pressure bleed valve, operable to ensure that a maximum desired supply pressure is not exceeded.
  • a blow valve may be placed in serried with the poppet 53, 53' or other valve.
  • the oil-less pump can be replaced with a gas cylinder or other source or fluid. It will be appreciated that for medical or veterinary applications the source of fluid will be able to provide 'clean' fluid, or will be able to provide fluid to 'cleaning means' which will be able to supply a sufficient source of clean fluid to allow use of the apparatus.
  • the different parts 10, 11 , 12, 13 of the insert 1 may be different colours to facilitate notification of insertion depth or may have graduation marks along the length thereof. Although, the parts are shown as having a circular cross-section, they may have an oval cross-sectional shape or other shape as required.
  • the third and fourth parts 12, 13 may be configured as a single part.
  • the parts of the insert 1 may be fabricated from plastic such as silicone rubber
  • the distal flexible wall 103 of the first part 10 of the insert 1 is fabricated from silicone rubber or other readily sterilisable flexible materials.
  • the flexibility of a part (or lack of) may be varied by varying the thicknesses of the plastics material used in different parts.
  • the rigid parts can also be made of stainless steel or other rigid sterilisable materials.
  • the apparatus may be used in veterinary procedures as well as those on human beings.
  • equine colic may be more amenable to treatment using the apparatus described above.
  • the apparatus 1 , 50, 50' may also be useful in other (non-medical) applications where it is necessary to supply a fluid to, or withdrawal of fluid from, an enclosed space, especially and enclosed space which is collapsible, compressible and/or susceptible to damage if exposed to high pressures.
  • the apparatus 1 may be useful in the attachment of a colostomy drainage bag to an incision in a bowel or in the supply of gas during laparoscopy.
  • the apparatus 1 may be used in the irrigation or washing of an ear canal.
  • the complete apparatus 1 may be inserted into the ear and sealed against the ear wall and cleansing fluid may be applied therethrough.
  • the terminal part may then be reinserted to close the fluid flow passage to allow the patient to move freely for the 'soaking' period. Once the fluid has been in place for a certain period of time the terminal closing part may be removed to allow the fluid to drain or to allow further fluid to be applied for washing and cleaning and subsequent draining.
  • the apparatus 1 may also be useful in plumbing or other non-medical fluid flow applications to non-permanently join a member to a pipe, tube or other container.
  • the apparatus provided with an internally extending flange may be securable to a pipe for plumbing or other applications.
  • the tapered tip may be open and, for example, a tube may be inserted into the open end and sealed against using the engagement means.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Vascular Medicine (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un appareil (1) destiné au passage de fluide dans celui-ci. L'appareil (1) comprend des premier (10) et seconds éléments (12, 13) pouvant être séparés les uns des autres et alignés sur un axe commun, de manière à obtenir un corps allongé comprenant une première extrémité (2) et une seconde extrémité avant (3) formée en pointe tronconique (130), le premier élément (10) possédant un passage d'écoulement de fluide (101) dans celui-ci; ainsi que des moyens (103) disposés de manière à être ou venir en contact avec au moins une paroi d'un espace fermé quand l'appareil (1) est en contact avec celui-ci, c'est-à-dire introduit dans celui-ci.
PCT/GB2005/000086 2004-01-13 2005-01-13 Distribution de fluide WO2005067999A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0400646.6 2004-01-13
GB0400646A GB0400646D0 (en) 2004-01-13 2004-01-13 Insert
GB0423810A GB0423810D0 (en) 2004-10-27 2004-10-27 Fluid delivery
GB0423810.1 2004-10-27

Publications (2)

Publication Number Publication Date
WO2005067999A2 true WO2005067999A2 (fr) 2005-07-28
WO2005067999A3 WO2005067999A3 (fr) 2008-12-24

Family

ID=34796815

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/000086 WO2005067999A2 (fr) 2004-01-13 2005-01-13 Distribution de fluide

Country Status (1)

Country Link
WO (1) WO2005067999A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114917460A (zh) * 2022-06-09 2022-08-19 江苏理工学院 一种组织复位支撑装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1596847A (en) * 1925-12-14 1926-08-17 John S Mallory Colonic irrigating device
US1870942A (en) * 1928-05-26 1932-08-09 Gynex Corp Syringe
US2487630A (en) * 1946-07-25 1949-11-08 Alvarez Patent Corp Syringe
US3916896A (en) * 1974-08-05 1975-11-04 Alexander K S Ballard Portable douche and sitz bath
EP0274415A2 (fr) * 1987-01-06 1988-07-13 Howell, Richard Owen Irrigateur du côlon
US20010041858A1 (en) * 1998-01-23 2001-11-15 Pinaki Ray Methods and devices for occluding the ascending aorta and maintaining circulation of oxygenated blood in the patient when the patient's heart is arrested
US20010049493A1 (en) * 1999-04-16 2001-12-06 Thomas R. Lyon Clear view cannula

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1596847A (en) * 1925-12-14 1926-08-17 John S Mallory Colonic irrigating device
US1870942A (en) * 1928-05-26 1932-08-09 Gynex Corp Syringe
US2487630A (en) * 1946-07-25 1949-11-08 Alvarez Patent Corp Syringe
US3916896A (en) * 1974-08-05 1975-11-04 Alexander K S Ballard Portable douche and sitz bath
EP0274415A2 (fr) * 1987-01-06 1988-07-13 Howell, Richard Owen Irrigateur du côlon
US20010041858A1 (en) * 1998-01-23 2001-11-15 Pinaki Ray Methods and devices for occluding the ascending aorta and maintaining circulation of oxygenated blood in the patient when the patient's heart is arrested
US20010049493A1 (en) * 1999-04-16 2001-12-06 Thomas R. Lyon Clear view cannula

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114917460A (zh) * 2022-06-09 2022-08-19 江苏理工学院 一种组织复位支撑装置
CN114917460B (zh) * 2022-06-09 2023-07-04 江苏理工学院 一种组织复位支撑装置

Also Published As

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