WO2011018093A1 - Click-on mechanism for a pump - Google Patents

Click-on mechanism for a pump Download PDF

Info

Publication number
WO2011018093A1
WO2011018093A1 PCT/DK2010/050210 DK2010050210W WO2011018093A1 WO 2011018093 A1 WO2011018093 A1 WO 2011018093A1 DK 2010050210 W DK2010050210 W DK 2010050210W WO 2011018093 A1 WO2011018093 A1 WO 2011018093A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
cassette
air
click
air inlet
Prior art date
Application number
PCT/DK2010/050210
Other languages
French (fr)
Inventor
Klaus Budig
Marc Anderson
Steven Vordenberg
David Carpenter
Original Assignee
Coloplast A/S
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
Application filed by Coloplast A/S filed Critical Coloplast A/S
Publication of WO2011018093A1 publication Critical patent/WO2011018093A1/en

Links

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
    • A61M3/0201—Cassettes therefor
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit

Definitions

  • the invention relates to a click-on mechanism for a pump for use in connection with anal irrigation.
  • the click-on mechanism includes a cassette with the tubing and a pump with a complementary fitting for the cassette.
  • Anal irrigation is one of a number of treatments used to aid people with bowel problems. People suffering from bowel problems are often paralyzed typically due to spinal cord injuries and confined to a wheelchair or hospitalized. In these situations, often the peristaltic functions, i.e. the reflexes and muscles of the bowel cannot be stimulated correctly. This results in constipation or random discharge of bowel contents.
  • a stimulation of the peristaltic movements of the colon can be provided.
  • an anal probe also called anal catheter or speculum
  • the anal probe is inserted into the rectum through the anus.
  • the anal probe is typically retained in the rectum by retention means, most commonly a balloon, which is inflated against the wall of the rectum.
  • a liquid, such as water or a saline solution is then introduced into the rectum through the anal probe.
  • the amount of liquid is generally below 1 ,5 litres, depending on the person.
  • the liquid is contained in a reservoir prior to use.
  • the reservoir may e.g. be in the form of a canister or a reservoir bag.
  • the liquid will typically be pumped from the reservoir by means of a pump.
  • WO08087221 relates to an individually positionable pump that can be placed anywhere along the tubing.
  • the pump comprises attachment means and may be either of a peristaltic type or a type having means for cutting into the tube, that is, a pump system having a click-on mechanism.
  • the invention relates to a pump having two outlets and a cassette including two air tubes with two inlets.
  • the pump and the cassette have complementary means for attaching the two parts to each other.
  • the pump and cassette have means for connecting the two outlets from the pump with the two inlets to the air tubes.
  • Such a configuration of pump and cassette provides a user friendly connection of tubing to the pump.
  • the pump can only be attached in one way to the cassette so that the risk of error is substantially eliminated.
  • the invention in a first aspect, relates to a click-on mechanism for a pump, which click-on mechanism includes a cassette with means for attaching the pump to the cassette and a pump including complementary means where the cassette comprises
  • first air tube extending into the cassette and communicating with a first air inlet
  • second air tube extending into the cassette and communicating with a second air inlet
  • - pumping means for pumping air through the valve and to one of the two air outlets.
  • a cassette connection as in the present invention provides an easy way of connecting the pump to the tubing. This makes it possible to change the tubing when this is worn out, and continue using the pump which typically has a longer life-cycle than the tubing. This both saves on the long-term cost of the system and reduces waste.
  • An anal irrigation system typically comprises an anal probe for entering into the rectum, an inflatable element surrounding the probe for retaining the probe in the rectum, a reservoir bag including the irrigation liquid, a pump for pumping the liquid from the reservoir bag to the probe and a pump (may be the same pump) for pumping air into the inflatable element. Furthermore, the system comprises tubing for connecting the different parts.
  • the pump is used for pumping air into the reservoir bag so as to displace the liquid from the bag and for pumping air into an inflatable element surrounding the probe.
  • the pump needs two outlets - one for connecting to the air tube leading to the bag and one for connecting to the air tube leading to the inflatable element.
  • the cassette of this invention has two air tubes - one leading to the bag and another leading to the inflatable element.
  • the air tubes are each provided with an air inlet adapted for cooperating with the air outlets of the pump.
  • the water tubing is however unbroken as it leads from the bag to the probe. In an embodiment it extends through the cassette.
  • the unbroken water tube ensures that there will be no leaking of water in the lap.
  • the pump can be attached to the cassette through different means.
  • the means for attaching are adapted to ensure that the pump cannot be attached incorrectly.
  • the pump has a first air outlet and a second air outlet to cooperate with the first air inlet and the second air inlet on the cassette respectively. This way the first air outlet and the first air inlet form a pair.
  • the second air outlet and the second air inlet form a pair.
  • These air outlets and inlets may be adapted so that only the first air outlet can be connected to the first air inlet and likewise with the second air outlet and air inlet.
  • the first pair may have a different size than the second pair or the first pair may have a fitting different from the second pair.
  • the cassette may also include means to ensure that the pump can only be attached in one position thereby ensuring the correct coupling between the pairs of outlets and inlets.
  • these means include a dove-tail configuration between the pump and the cassette so that the cassette is slid into a connection with the pump.
  • the means include a snap-fitting between the pump and the cassette.
  • the cassette may be gripped by hooking means at an end of the pump and pivoted into an attachment.
  • the attachment means include gripping means as well as snapping means for snapping the pump and cassette into position following the pivoting motion. Such attachment means are well-known in the art and will not be described further.
  • the cassette is adapted for providing a connection between the first and second air inlet, which communicate with two air-channels, and the pump having two air outlets.
  • the fittings forming the air inlets between the air-channels and the outlets can be made in different ways.
  • One way is to provide a press-fit between the air inlets and the air outlets from the pump.
  • the press-fit can be made complementary conical sections. It can also be made by a kind of snap-fitting.
  • the connection between the two air inlets and the air outlets from the pump is provided with a gasket for sealing the connection.
  • a gasket is optional because if the connection were to leak, it would only be a slight nuisance to the patient - as the balloon would deflate a little. However, it would not cause the system to
  • Figure 1 illustrates a cassette according to the invention.
  • Figure 2 illustrates a close-up view of the connection into the air-inlets of the air-tubes.
  • FIGS 3a-3c illustrate different steps in the attachment between the pump and the cassette.
  • FIG. 1 illustrates a cassette 1 according to the invention and figure 2 illustrates the connection at the air-inlets.
  • the cassette 1 includes an attachment 2 for attaching the pump to the cassette.
  • the attachment comprises means 3 for gripping the pump at a front end and means 4 for clicking the pump into place.
  • the gripping means 3 are in this embodiment in form of holes 5 and 6 for cooperating with hooking means at the pump (not shown).
  • the clicking means 4 are also in form of holes 7 and 8 for cooperating with snaps at the pump (not shown).
  • the cassette includes a first air tube 9 communicating with a first air inlet 10 and a second air tube 11
  • the first air tube extends to a reservoir bag (not shown) in the system, which includes the irrigation liquid and the second air tube extends to a balloon on an anal probe (not shown), or vice versa.
  • the pump is not illustrated in the figure but as described earlier, the pump includes two air outlets for cooperating with the first and second air inlet to provide the air-flow into the air tubes - and further into the reservoir bag and the balloon respectively.
  • An unbroken liquid tube 13 extends through the cassette 1 - however it may also have been separate so that it forms no part of the cassette 1.
  • the air inlets may include gaskets 14 for sealing the connection between the pump and the cassette.
  • FIGs 3a-3c illustrate different steps of attaching the pump 20 to the cassette 1.
  • the pump 20 and the cassette 1 are not yet attached but lined up towards each other.
  • the cassette is attached by the hooking means 3 to the pump.
  • the two parts are completely attached. The complete attachment is done by pivoting the pump 20 with respect to the cassette 1 around the hooking means 3.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A click-on mechanism for a pump is provided. The mechanism includes a cassette (2) having two air tubes (9, 11) with two inlets (10, 12) and a pump (20) having means for attaching it to the cassette. The pump has two outlets for cooperating with the two inlets. The click-on mechanism reduces the risk of attaching the wrong tubing to the pump.

Description

Click-on mechanism for a pump
The invention relates to a click-on mechanism for a pump for use in connection with anal irrigation. The click-on mechanism includes a cassette with the tubing and a pump with a complementary fitting for the cassette. Background
Anal irrigation is one of a number of treatments used to aid people with bowel problems. People suffering from bowel problems are often paralyzed typically due to spinal cord injuries and confined to a wheelchair or hospitalized. In these situations, often the peristaltic functions, i.e. the reflexes and muscles of the bowel cannot be stimulated correctly. This results in constipation or random discharge of bowel contents. By using anal irrigation, a stimulation of the peristaltic movements of the colon can be provided.
To perform such anal irrigation a device comprising an anal probe, also called anal catheter or speculum, is provided. The anal probe is inserted into the rectum through the anus. The anal probe is typically retained in the rectum by retention means, most commonly a balloon, which is inflated against the wall of the rectum. A liquid, such as water or a saline solution is then introduced into the rectum through the anal probe. The amount of liquid is generally below 1 ,5 litres, depending on the person. The liquid is contained in a reservoir prior to use. The reservoir may e.g. be in the form of a canister or a reservoir bag. The liquid will typically be pumped from the reservoir by means of a pump.
Description of related art
WO08087221 relates to an individually positionable pump that can be placed anywhere along the tubing. The pump comprises attachment means and may be either of a peristaltic type or a type having means for cutting into the tube, that is, a pump system having a click-on mechanism.
Summary of the Invention
The invention relates to a pump having two outlets and a cassette including two air tubes with two inlets. The pump and the cassette have complementary means for attaching the two parts to each other. Furthermore, the pump and cassette have means for connecting the two outlets from the pump with the two inlets to the air tubes. Such a configuration of pump and cassette provides a user friendly connection of tubing to the pump. The pump can only be attached in one way to the cassette so that the risk of error is substantially eliminated.
Detailed Description of the Invention
In a first aspect, the invention relates to a click-on mechanism for a pump, which click-on mechanism includes a cassette with means for attaching the pump to the cassette and a pump including complementary means where the cassette comprises
a first air tube extending into the cassette and communicating with a first air inlet, a second air tube extending into the cassette and communicating with a second air inlet,
and where the pump comprises
- two air outlets adapted for cooperation with the first and second air inlet on the cassette,
a valve for leading air to selectively one of the two outlets,
- pumping means for pumping air through the valve and to one of the two air outlets.
In an anal irrigation system, the pump needs to be connected to the tubing. A cassette connection as in the present invention provides an easy way of connecting the pump to the tubing. This makes it possible to change the tubing when this is worn out, and continue using the pump which typically has a longer life-cycle than the tubing. This both saves on the long-term cost of the system and reduces waste.
Furthermore, the amount of user error is reduced.
An anal irrigation system typically comprises an anal probe for entering into the rectum, an inflatable element surrounding the probe for retaining the probe in the rectum, a reservoir bag including the irrigation liquid, a pump for pumping the liquid from the reservoir bag to the probe and a pump (may be the same pump) for pumping air into the inflatable element. Furthermore, the system comprises tubing for connecting the different parts.
In this invention, the pump is used for pumping air into the reservoir bag so as to displace the liquid from the bag and for pumping air into an inflatable element surrounding the probe. Thus the pump needs two outlets - one for connecting to the air tube leading to the bag and one for connecting to the air tube leading to the inflatable element. The cassette of this invention has two air tubes - one leading to the bag and another leading to the inflatable element. The air tubes are each provided with an air inlet adapted for cooperating with the air outlets of the pump.
The water tubing is however unbroken as it leads from the bag to the probe. In an embodiment it extends through the cassette. The unbroken water tube ensures that there will be no leaking of water in the lap.
The pump can be attached to the cassette through different means. In an embodiment, the means for attaching are adapted to ensure that the pump cannot be attached incorrectly. This means that the pump has a first air outlet and a second air outlet to cooperate with the first air inlet and the second air inlet on the cassette respectively. This way the first air outlet and the first air inlet form a pair. Likewise the second air outlet and the second air inlet form a pair. These air outlets and inlets may be adapted so that only the first air outlet can be connected to the first air inlet and likewise with the second air outlet and air inlet. For example, the first pair may have a different size than the second pair or the first pair may have a fitting different from the second pair. The cassette may also include means to ensure that the pump can only be attached in one position thereby ensuring the correct coupling between the pairs of outlets and inlets.
In one embodiment, these means include a dove-tail configuration between the pump and the cassette so that the cassette is slid into a connection with the pump. In another embodiment, the means include a snap-fitting between the pump and the cassette. In yet another embodiment, the cassette may be gripped by hooking means at an end of the pump and pivoted into an attachment. In other words, the attachment means include gripping means as well as snapping means for snapping the pump and cassette into position following the pivoting motion. Such attachment means are well-known in the art and will not be described further. The cassette is adapted for providing a connection between the first and second air inlet, which communicate with two air-channels, and the pump having two air outlets. The fittings forming the air inlets between the air-channels and the outlets can be made in different ways. One way is to provide a press-fit between the air inlets and the air outlets from the pump. The press-fit can be made complementary conical sections. It can also be made by a kind of snap-fitting. In an embodiment, the connection between the two air inlets and the air outlets from the pump is provided with a gasket for sealing the connection. Such a gasket is optional because if the connection were to leak, it would only be a slight nuisance to the patient - as the balloon would deflate a little. However, it would not cause the system to
malfunction.
Brief Description of the Drawing
Figure 1 illustrates a cassette according to the invention.
Figure 2 illustrates a close-up view of the connection into the air-inlets of the air-tubes.
Figures 3a-3c illustrate different steps in the attachment between the pump and the cassette.
Detailed Description of the Drawing
Figure 1 illustrates a cassette 1 according to the invention and figure 2 illustrates the connection at the air-inlets. The cassette 1 includes an attachment 2 for attaching the pump to the cassette. In this embodiment, the attachment comprises means 3 for gripping the pump at a front end and means 4 for clicking the pump into place. The gripping means 3 are in this embodiment in form of holes 5 and 6 for cooperating with hooking means at the pump (not shown). The clicking means 4 are also in form of holes 7 and 8 for cooperating with snaps at the pump (not shown). Furthermore, the cassette includes a first air tube 9 communicating with a first air inlet 10 and a second air tube 11
communicating with a second air inlet 12. The first air tube extends to a reservoir bag (not shown) in the system, which includes the irrigation liquid and the second air tube extends to a balloon on an anal probe (not shown), or vice versa. The pump is not illustrated in the figure but as described earlier, the pump includes two air outlets for cooperating with the first and second air inlet to provide the air-flow into the air tubes - and further into the reservoir bag and the balloon respectively.
An unbroken liquid tube 13 extends through the cassette 1 - however it may also have been separate so that it forms no part of the cassette 1. The air inlets may include gaskets 14 for sealing the connection between the pump and the cassette.
Figures 3a-3c illustrate different steps of attaching the pump 20 to the cassette 1. In figure 3a the pump 20 and the cassette 1 are not yet attached but lined up towards each other. In figure 3b, the cassette is attached by the hooking means 3 to the pump. In figure 3c, the two parts are completely attached. The complete attachment is done by pivoting the pump 20 with respect to the cassette 1 around the hooking means 3.

Claims

Claims
1. A click-on mechanism for a pump, which mechanism includes a cassette with means for attaching the pump to the cassette and a pump including complementary means where the cassette comprises
- a first air tube extending into the cassette and communicating with a first air inlet, a second air tube extending into the cassette and communicating with a second air inlet,
and where the pump comprises
- two air outlets adapted for cooperation with the first and second air inlet on the cassette,
a valve for leading air to selectively one of the two outlets,
pumping means for pumping air through the valve and to one of the two air outlets.
2. The click-on mechanism according to claim 1 , wherein the cassette further includes a liquid tube extending through the cassette.
3. The click-on mechanism according to any preceding claim, wherein the means for attaching are adapted to ensure that the pump cannot be attached incorrectly.
4. The click-on mechanism according to claim 3, wherein the cassette includes means to ensure that the pump can only be attached in one position.
5. The click-on mechanism according to claim 3, wherein the pump has a first air outlet and a second air outlet to cooperate with the first air inlet and the second air inlet on the cassette respectively and where these air outlets and inlets are adapted so that only the first air outlet can be connected to the first air inlet and likewise with the second air outlet and air inlet.
6. The click-on mechanism according to any preceding claims, wherein the attachment between the pump and the cassette includes a dove-tail connection.
7. The click-on mechanism according to any preceding claims, wherein the attachment between the pump and the cassette includes a pivot connection.
8. The click-on mechanism according to any preceding claims, wherein the connection between the two inlets to the air-channels and the outlets from the pump is provided with a gasket for sealing the connection.
PCT/DK2010/050210 2009-08-14 2010-08-13 Click-on mechanism for a pump WO2011018093A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200970085 2009-08-14
DKPA200970085 2009-08-14

Publications (1)

Publication Number Publication Date
WO2011018093A1 true WO2011018093A1 (en) 2011-02-17

Family

ID=41693235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2010/050210 WO2011018093A1 (en) 2009-08-14 2010-08-13 Click-on mechanism for a pump

Country Status (1)

Country Link
WO (1) WO2011018093A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040204679A1 (en) * 1998-01-29 2004-10-14 Allegiance Healthcare Corporation Disposable surgical suction/irrigation trumpet valve tube cassette
WO2008087221A2 (en) 2007-01-19 2008-07-24 Coloplast A/S Individually positionable pump system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040204679A1 (en) * 1998-01-29 2004-10-14 Allegiance Healthcare Corporation Disposable surgical suction/irrigation trumpet valve tube cassette
WO2008087221A2 (en) 2007-01-19 2008-07-24 Coloplast A/S Individually positionable pump system

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