WO1994026324A1 - Procedure and device for establishing and maintaining patency of draining tubing - Google Patents

Procedure and device for establishing and maintaining patency of draining tubing Download PDF

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Publication number
WO1994026324A1
WO1994026324A1 PCT/PL1994/000010 PL9400010W WO9426324A1 WO 1994026324 A1 WO1994026324 A1 WO 1994026324A1 PL 9400010 W PL9400010 W PL 9400010W WO 9426324 A1 WO9426324 A1 WO 9426324A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubing
pump
rotor
peristaltic pump
rollers
Prior art date
Application number
PCT/PL1994/000010
Other languages
French (fr)
Other versions
WO1994026324B1 (en
Inventor
Pawel PODGURNIAK
Original Assignee
Podgurniak Pawed
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 Podgurniak Pawed filed Critical Podgurniak Pawed
Priority to AU66596/94A priority Critical patent/AU6659694A/en
Publication of WO1994026324A1 publication Critical patent/WO1994026324A1/en
Publication of WO1994026324B1 publication Critical patent/WO1994026324B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • 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
    • A61M1/83—Tube strippers, i.e. for clearing the contents of the tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1238—Machines, pumps, or pumping installations having flexible working members having peristaltic action using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • 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
    • A61M1/70—Gravity drainage systems

Definitions

  • the invention is the procedure and device for establishing patency and maintaining the patency of draining tubing especially in medicine and biomedical experimentation.
  • suction and force peristaltic pumps are often used to pump fluids. They are primarily rotational pumps, in which the contents of the elastic pressure conduit (tubing), arranged in an arc, are forced by a rotor, often in the form of a cylinder spinning around its own axis, with at least two rollers parallel to the rotor axis. Compression pumps, being more complicated, are seldom used.
  • the clamps - most often three clamps, where the middle (pumping) clamp is the widest - arranged in a series, compress the tubing in a sequence COO - CCO - CCC - OOC - COC - COO, where C means compression of the tubing, and O - opening by the appropriate clamp.
  • peristaltic pumps Usage of peristaltic pumps makes valves unnecessary and prevents contact of the pump parts with the tubing contents, which insures against seizing, and, in biomedical applications, against contamination of the pump and tubing contents. It also eliminates the need for thorough cleaning and sterilization of pump elements. All peristaltic pumps, because of their function .and construction, insure against backflow and uncontrolled outflow of the pumped substance and generate continuous pulsating negative pressure in the suction line. The pump elements through their compression always, even after switching off the device, occlude the inside diameter of the tubing.
  • the invented procedure is based on periodic massaging (peristaltic forcing) of the contents within the elastic section of the tubing using a peristaltic pump and leaving the inside diameter of the tubing open between pumping cycles.
  • the invented instrument is a rotating peristaltic pump with a rotor containing one roller, which periodically forces the contents of the tubing, which forms .an arc lesser than 360 degrees.
  • Another device is a rotating peristaltic pump with a rotor containing at least two rollers, in which the length of the tubing possibly contacting the rollers directly and thus being compressed is lesser than the length of the greatest arc between neighboring rollers of the rotor.
  • Yet another device is a peristaltic compression pump with two clamps having a large contact area with the tubing and compressing this tubing in a sequence OO - CO - CC - OC - OO, where O means opening and C - compression of the tubing by the appropriate clamp. Negative pressure is also eliminated by this device (position OO).
  • the presented procedure enables less frequent checking of the drainage tubing patency, makes the periodic manual patency forcing of the tubing and tubing exchange - often troublesome and even impossible - unnecessary because regular periodic patency forcing usually prevents the formation of compact obstructional masses which could permanently occlude the drainage tubing.
  • the pump should function periodically, i.e. the forcing should be switched on at regular time intervals and during its off time the working part of the pump (the rotor or set of clamps) should remain in a neutral position with the inside diameter of the tubing open.
  • figure 1 presents the modified rotational peristaltic pump with a one-roller rotor
  • figure 2 - with a three-rollers rotor presents the modified clamping peristaltic pump with two clamps.
  • the elastic tubing 1 made of silicone
  • tubing bed 2 of the pump the elastic tubing 1 (made of silicone) is placed on tubing bed 2 of the pump, and its contents are forced by roller 3 of rotor 4 revolving around its axis 5.
  • the elastic tubing 1 is placed on tubing bed 2 of the pump, and its contents are forced by rollers 3 of rotor 4 revolving around its axis 5.
  • the length of the tubing possibly contacting the rollers directly and thus being sqeezed is lesser than the length of the greatest arc between neighboring rollers of the rotor.
  • the tubing 1 is placed on tubing bed 2 and runs below two clamps 6 and 7 which are clamped in sequence OO - CO - CC - OC - OO.
  • the clamps are shown in CO position, i.e. clamp 6 is closed and clamp 7 - open.
  • the invented procedure and device can be used in medical practice to maintain the patency of wound drainage (including post-operational), bladder drainage, peritoneal cavity drainage, etc. and, in biomedical experimentation, to maintain the patency of catheters (pancreatic, bilary, lymphatic) and by-passes.

Abstract

The invention is the procedure and device for establishing patency and maintaining the patency of draining tubing especially in medicine and biomedical experimentation. The invented procedure is based on periodic massaging (peristaltic forcing) of the contents within the elastic section of the tubing using a peristaltic pump and leaving the inside diameter of the tubing open between pumping cycles. The invented device is a peristaltic pump which clamps the inside diameter of the tubing only during forcing cycles and allows a free flow of the contents between cycles. This device is a rotational peristaltic pump with an elastic tubing (1) placed on tubing bed (2) of the pump forming an arc lesser than 360 degrees and a rotor (4) containing one roller (3), which periodically forces the contents of the tubing. Another device is a rotational peristaltic pump with a rotor (4) containing at least two rollers (3), in which the length of the tubing possibly contacting the rollers directly and thus being squeezed is lesser than the length of the greatest arc between neighboring rollers of the rotor. Yet another device is a peristaltic compression pump with two clamps (6, 7).

Description

Procedure and Device for Establishing and Maintaining Patency of Draining Tubing
The invention is the procedure and device for establishing patency and maintaining the patency of draining tubing especially in medicine and biomedical experimentation.
Similar instruments and procedures have not been ascertained. Usually, establishing patency of occluded tubing is achieved by manually massaging the contents of the tubing, gently pulling, suctioning, flushing and - in extreme situations, there, where possible - exchanging the drain.
In biochemistry and medicine, suction and force peristaltic pumps are often used to pump fluids. They are primarily rotational pumps, in which the contents of the elastic pressure conduit (tubing), arranged in an arc, are forced by a rotor, often in the form of a cylinder spinning around its own axis, with at least two rollers parallel to the rotor axis. Compression pumps, being more complicated, are seldom used. In these pumps, the clamps - most often three clamps, where the middle (pumping) clamp is the widest - arranged in a series, compress the tubing in a sequence COO - CCO - CCC - OOC - COC - COO, where C means compression of the tubing, and O - opening by the appropriate clamp.
Usage of peristaltic pumps makes valves unnecessary and prevents contact of the pump parts with the tubing contents, which insures against seizing, and, in biomedical applications, against contamination of the pump and tubing contents. It also eliminates the need for thorough cleaning and sterilization of pump elements. All peristaltic pumps, because of their function .and construction, insure against backflow and uncontrolled outflow of the pumped substance and generate continuous pulsating negative pressure in the suction line. The pump elements through their compression always, even after switching off the device, occlude the inside diameter of the tubing.
The invented procedure is based on periodic massaging (peristaltic forcing) of the contents within the elastic section of the tubing using a peristaltic pump and leaving the inside diameter of the tubing open between pumping cycles.
The invented instrument is a rotating peristaltic pump with a rotor containing one roller, which periodically forces the contents of the tubing, which forms .an arc lesser than 360 degrees.
Another device is a rotating peristaltic pump with a rotor containing at least two rollers, in which the length of the tubing possibly contacting the rollers directly and thus being compressed is lesser than the length of the greatest arc between neighboring rollers of the rotor.
While the rotor revolves, in both of these devices, there are periods in which the inside diameter of the tubing is open; it is, therefore, possible to eliminate the short-lasting negative pressure generated by operation of the pump in the suction line. The pump can be stopped in this position.
Yet another device is a peristaltic compression pump with two clamps having a large contact area with the tubing and compressing this tubing in a sequence OO - CO - CC - OC - OO, where O means opening and C - compression of the tubing by the appropriate clamp. Negative pressure is also eliminated by this device (position OO).
Construction of rotational peristaltic pumps is always simpler than construction of compression pumps, and use of only one roller is an additional simplification.
The presented procedure enables less frequent checking of the drainage tubing patency, makes the periodic manual patency forcing of the tubing and tubing exchange - often troublesome and even impossible - unnecessary because regular periodic patency forcing usually prevents the formation of compact obstructional masses which could permanently occlude the drainage tubing.
Free outflow of the tubing contents between patency forcing cycles, when the inside diameter of the tubing remains open, insures drainage conditions identical to those without instrument usage and prevents a long-lasting negative pressure in the suction line. To assure an optimal time ratio of patency forcing (active pumping) to free outflow, the pump should function periodically, i.e. the forcing should be switched on at regular time intervals and during its off time the working part of the pump (the rotor or set of clamps) should remain in a neutral position with the inside diameter of the tubing open.
The invented device is displayed in the attached conceptual technical designs, where figure 1 presents the modified rotational peristaltic pump with a one-roller rotor, figure 2 - with a three-rollers rotor, and figure 3 presents the modified clamping peristaltic pump with two clamps. In the device with the rotational peristaltic pump with a one-roller rotor (figure 1), the elastic tubing 1 (made of silicone) is placed on tubing bed 2 of the pump, and its contents are forced by roller 3 of rotor 4 revolving around its axis 5.
In the device with the rotational peristaltic pump with a three-rollers rotor (figure 2), the elastic tubing 1 is placed on tubing bed 2 of the pump, and its contents are forced by rollers 3 of rotor 4 revolving around its axis 5. The length of the tubing possibly contacting the rollers directly and thus being sqeezed is lesser than the length of the greatest arc between neighboring rollers of the rotor.
In the device with a clamping peristaltic pump (figure 3), the tubing 1 is placed on tubing bed 2 and runs below two clamps 6 and 7 which are clamped in sequence OO - CO - CC - OC - OO. The clamps are shown in CO position, i.e. clamp 6 is closed and clamp 7 - open.
The invented procedure and device can be used in medical practice to maintain the patency of wound drainage (including post-operational), bladder drainage, peritoneal cavity drainage, etc. and, in biomedical experimentation, to maintain the patency of catheters (pancreatic, bilary, lymphatic) and by-passes.

Claims

Patent Claims
1. The procedure for establishing and maintaining patency of the drainage tubing with the following characteristics: that the contents of the elastic part of the tubing are periodically forced by the use of a peristaltic pump and the inside diameter of the tubing opens for free outflow of the contents between forcing cycles.
2. The device for establishing and maintaining patency of the drainage tubing containing a rotational peristaltic pump with the following characteristicts: that the rotor of the pump' has only one roller (3).
3. The device for establishing and maintaining patency of the drainage tubing containing a rotational peristaltic pump with the following characteristics: that the rotor of the pump has at least two rollers (3) and the length of the elastic tubing (1) possibly contacting the rollers (3) directly and thus being sqeezed is lesser than the length of the greatest arc between neighboring rollers of the rotor.
4. The device for establishing and maintaining patency of the drainage tubing containing a clamping peristaltic pump with the following characteristics: that the working part of the pump consists of two clamps (6) and (7) positioned serially on the elastic tubing (1).
PCT/PL1994/000010 1993-05-17 1994-05-16 Procedure and device for establishing and maintaining patency of draining tubing WO1994026324A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66596/94A AU6659694A (en) 1993-05-17 1994-05-16 Procedure and device for establishing and maintaining patency of draining tubing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.298980 1993-05-17
PL93298980A PL298980A1 (en) 1993-05-17 1993-05-17 Method of and apparatus for making and keeping patient the drainage conduits

Publications (2)

Publication Number Publication Date
WO1994026324A1 true WO1994026324A1 (en) 1994-11-24
WO1994026324B1 WO1994026324B1 (en) 1995-02-02

Family

ID=20060094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL1994/000010 WO1994026324A1 (en) 1993-05-17 1994-05-16 Procedure and device for establishing and maintaining patency of draining tubing

Country Status (3)

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AU (1) AU6659694A (en)
PL (1) PL298980A1 (en)
WO (1) WO1994026324A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194452A (en) * 1963-12-11 1965-07-13 Naomi Du Puis Tube stripper
CH482922A (en) * 1968-10-25 1969-12-15 Kustner Freres Et Cie S A Peristaltic pump
GB1330833A (en) * 1969-10-07 1973-09-19 Marsson Ind Ltd Peristaltic pump
US4014318A (en) * 1973-08-20 1977-03-29 Dockum James M Circulatory assist device and system
FR2337824A1 (en) * 1976-01-12 1977-08-05 Vial Sarl High frequency medical drip feed pump - has sealing valve downstream of electromagnetically operated pumping piston
US4165954A (en) * 1975-08-11 1979-08-28 Corning Glass Works Linear peristaltic pump having pivotal pump arm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194452A (en) * 1963-12-11 1965-07-13 Naomi Du Puis Tube stripper
CH482922A (en) * 1968-10-25 1969-12-15 Kustner Freres Et Cie S A Peristaltic pump
GB1330833A (en) * 1969-10-07 1973-09-19 Marsson Ind Ltd Peristaltic pump
US4014318A (en) * 1973-08-20 1977-03-29 Dockum James M Circulatory assist device and system
US4165954A (en) * 1975-08-11 1979-08-28 Corning Glass Works Linear peristaltic pump having pivotal pump arm
FR2337824A1 (en) * 1976-01-12 1977-08-05 Vial Sarl High frequency medical drip feed pump - has sealing valve downstream of electromagnetically operated pumping piston

Also Published As

Publication number Publication date
PL298980A1 (en) 1994-07-11
AU6659694A (en) 1994-12-12

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