WO2007118520A1 - System for connecting tubes to a peristaltic pump - Google Patents

System for connecting tubes to a peristaltic pump Download PDF

Info

Publication number
WO2007118520A1
WO2007118520A1 PCT/EP2007/000414 EP2007000414W WO2007118520A1 WO 2007118520 A1 WO2007118520 A1 WO 2007118520A1 EP 2007000414 W EP2007000414 W EP 2007000414W WO 2007118520 A1 WO2007118520 A1 WO 2007118520A1
Authority
WO
WIPO (PCT)
Prior art keywords
connection system
seat
pump
bracket
shaped
Prior art date
Application number
PCT/EP2007/000414
Other languages
French (fr)
Inventor
Pietro Mussolin
Gianni Pagano
Gianni Grillenzoni
Original Assignee
Mikai S.P.A.
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 Mikai S.P.A. filed Critical Mikai S.P.A.
Publication of WO2007118520A1 publication Critical patent/WO2007118520A1/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
    • F04B43/12—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
    • 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
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0072—Special features particularities of the flexible members of tubular flexible members

Definitions

  • the present invention relates to a system for connecting tubes to a peristaltic pump.
  • peristaltic pumps generally comprise a circular surface which surrounds a rotor so as to form a semicircular seat in which a portion of a deformable tube is arranged.
  • the rotor has rollers acting on the tube and deforming it progressively so as to create a current of fluid.
  • the tube is subjected to a traction force and must therefore be locked axially.
  • One system which is commonly used includes a support which is fixed to the body of the pump and is provided with a semicircular seat which accommodates a tube provided with a ring which is inserted in the seat and prevents the movement of the tube in an axial direction.
  • the fixed support which is part of the body of the pump, has a contoured seat which accommodates a connecting member which is monolithic with the tube and is shaped so as to match the fixed support.
  • the aim of the present invention is to provide a new system for connecting tubes to a peristaltic pump which is functionally effective and reliable.
  • An object of the invention is to provide a connection system which can be used for various pumps. Another object of the invention is to provide a connection system which is simple to use and ensures maximum safety.
  • a system for connecting tubes to a peristaltic pump characterized in that it comprises a bracket member which is detachably associated with the body of a peristaltic pump by means of a protruding member which is associated with the pump body, said bracket member comprising at least one seat for a connecting member which is rigidly coupled to at least one tube to be connected to the pump.
  • Figure 1 is a front perspective view of a peristaltic pump provided with the connection system according to the present invention
  • Figure 2 is a perspective view of a bracket member of the system according to the invention
  • Figure 3 is a perspective view of the application of the bracket member of Figure 2 to a lever member during the operation of the connection system;
  • Figure 4 is a plan view of the base block of the bracket member of Figure 3;
  • Figure 5 is a perspective view of the plate of the bracket member of Figure 4.
  • Figure 6 is a transverse sectional elevation view of the bracket body of the bracket member of Figure 5;
  • Figure 7 is a bottom view of the bracket body of the bracket member of Figure 6;
  • Figure 8 is an enlarged-scale bottom view of a detail of the bracket body of the bracket member of Figure 7;
  • Figure 9 is a partially sectional front elevation view of another bracket member of the system according to the invention.
  • Figure 10 is a side elevation view of the bracket member of Figure 9;
  • Figure 1 1 is a perspective view of the bracket member of Figure 10;
  • Figure 12 is a perspective view of the application of the bracket member of Figure 1 1 to a lever member during the operation of the connection system;
  • Figure 13 is a perspective view of the connector of the tube which can be applied to the bracket member of Figures 2-8;
  • Figure 14 is a plan view of the connector of Figure 13;
  • Figure 15 is a longitudinal sectional elevation view of the connector of Figure 14.
  • connection system according to the invention is particularly useful in a peristaltic pump 2 provided with two rotor assemblies, respectively designated by the reference numerals 3 and 103, of a per se known type.
  • connection system designated by the reference numeral 1 , has a bracket member 4, which can be applied to a lever member 5 pivoted to the body of the pump 2.
  • the bracket member 4 has a seat 6 which accommodates a connector member 7 associated with a tube 8 to be connected to the rotor assembly 3.
  • the bracket member 4 has a base block 9 provided with a recess 10. From a top view, recess 10 is substantially triangular and accommodates the lower edge of the body of the pump 2 when the bracket member 4 is applied to it.
  • a U-shaped plate 1 1 and a bracket body 12, in which the seat 6 is formed, are associated with the base block 9.
  • the plate 1 1 forms a through seat 13 together with the base block 9.
  • Lever 5 is inserted in seat 13 in order to associate the bracket member 4 with the body of the pump 2 in the position for use.
  • the bracket body 12 In order to fix the bracket body 12 to the base block 9, the bracket body has a protrusion 14, which is inserted in a recess 15 which is formed in the base block 9.
  • the seat 6 of the bracket body 12 has a passage section 16 for the insertion of the connector member 7 and at least one polygonal annular seat 17, which is wider than an axial passage section 18 of the body of the connector member 7.
  • the polygonal annular seat 17 accommodates a polygonal collar 77, which is provided in the connector member 7 of the tube 8.
  • the connector member 7 is in fact constituted by a substantially cylindrical body 70, on which the polygonal collar 77 is formed.
  • the polygonal collar 77 is constituted by a hexagonal portion with rounded teeth.
  • the hexagonal portion may be inserted in the polygonal seat 17, which is likewise hexagonal with rounded seats which are appropriately shaped complementarily with respect to the hexagonal portion of the connector 7.
  • connection system is as follows. Before applying the tube 8 to the rotor assembly 3 of the pump 2, the bracket member 4 is applied to the lever 5, which is rotated outward beforehand.
  • the bracket member 4 is inserted on the lever 5 until the triangular seat 10 of the base block 9 abuts against the edge of the body of the pump 2.
  • connection system designated by the reference numeral 101 , has a bracket member 104, which can be applied to a protruding member 105 of the body of the pump 2.
  • the bracket member 104 has a fixing body 106, which accommodates a Y-shaped connecting member of a double tube 108 to be connected to the rotor assembly 103.
  • the bracket member 104 has a substantially quadrangular seat 109, which accommodates the protruding member 105 of the body of the pump 2.
  • the protruding member 105 is constituted by three protrusions 110 forming two longitudinal seats 1 1 1 for the two tube portions 108.
  • the quadrangular seat 109 is laterally provided with a recess 1 12, and the fixing body 106 can be fixed above it.
  • the fixing body 106 has a substantially Y-shaped seat 1 14 for accommodating the Y- shaped connector of the double tube 108.
  • the Y-shaped seat is open on the side of the fixing body 106 to be applied to the bracket member 104 by means of pin members 113 or the like.
  • the Y-shaped seat 1 14 accommodates the Y-shaped connecting member in order to lock it in position, preventing it from being able to disengage from the fixing body 106 during the operation of the pump.
  • connection system 101 entails that the bracket member is applied to the protruding member 105 of the body of the pump 2 and then the Y-shaped connector of the double tube 108 is applied and locked on the bracket member 104 by means of the fixing body 106.
  • the materials used, as well as the dimensions, may of course be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • External Artificial Organs (AREA)
  • Cyclones (AREA)
  • Paper (AREA)

Abstract

A system for connecting tubes to a peristaltic pump, having a bracket member which can be detachably associated with the body of a peristaltic pump by a protruding member which is associated with the pump body. The bracket member has a seat for a connecting member which is rigidly associated with one or more tubes to be connected to the pump.

Description

SYSTEM FOR CONNECTING TUBES TO A PERISTALTIC PUMP
The present invention relates to a system for connecting tubes to a peristaltic pump.
As is known, peristaltic pumps generally comprise a circular surface which surrounds a rotor so as to form a semicircular seat in which a portion of a deformable tube is arranged.
The rotor has rollers acting on the tube and deforming it progressively so as to create a current of fluid.
The tube is subjected to a traction force and must therefore be locked axially.
It is known to use various systems for this purpose. One system which is commonly used includes a support which is fixed to the body of the pump and is provided with a semicircular seat which accommodates a tube provided with a ring which is inserted in the seat and prevents the movement of the tube in an axial direction.
In other similar connection systems, the fixed support, which is part of the body of the pump, has a contoured seat which accommodates a connecting member which is monolithic with the tube and is shaped so as to match the fixed support.
The aim of the present invention is to provide a new system for connecting tubes to a peristaltic pump which is functionally effective and reliable.
An object of the invention is to provide a connection system which can be used for various pumps. Another object of the invention is to provide a connection system which is simple to use and ensures maximum safety.
This aim and these and other objects which will become better apparent hereinafter are achieved by a system for connecting tubes to a peristaltic pump, characterized in that it comprises a bracket member which is detachably associated with the body of a peristaltic pump by means of a protruding member which is associated with the pump body, said bracket member comprising at least one seat for a connecting member which is rigidly coupled to at least one tube to be connected to the pump.
Further characteristics and advantages of the invention will become better apparent from the description of preferred but not exclusive embodiments thereof, illustrated by way of non-limiting example in the accompanying drawings, wherein: Figure 1 is a front perspective view of a peristaltic pump provided with the connection system according to the present invention;
Figure 2 is a perspective view of a bracket member of the system according to the invention; Figure 3 is a perspective view of the application of the bracket member of Figure 2 to a lever member during the operation of the connection system;
Figure 4 is a plan view of the base block of the bracket member of Figure 3;
Figure 5 is a perspective view of the plate of the bracket member of Figure 4;
Figure 6 is a transverse sectional elevation view of the bracket body of the bracket member of Figure 5;
Figure 7 is a bottom view of the bracket body of the bracket member of Figure 6;
Figure 8 is an enlarged-scale bottom view of a detail of the bracket body of the bracket member of Figure 7;
Figure 9 is a partially sectional front elevation view of another bracket member of the system according to the invention;
Figure 10 is a side elevation view of the bracket member of Figure 9;
Figure 1 1 is a perspective view of the bracket member of Figure 10;
Figure 12 is a perspective view of the application of the bracket member of Figure 1 1 to a lever member during the operation of the connection system; Figure 13 is a perspective view of the connector of the tube which can be applied to the bracket member of Figures 2-8;
Figure 14 is a plan view of the connector of Figure 13;
Figure 15 is a longitudinal sectional elevation view of the connector of Figure 14.
With reference to the cited figures, a connection system according to the invention, generally designated by the reference numerals 1 and 101 , is particularly useful in a peristaltic pump 2 provided with two rotor assemblies, respectively designated by the reference numerals 3 and 103, of a per se known type.
According to a first embodiment of the invention, the connection system, designated by the reference numeral 1 , has a bracket member 4, which can be applied to a lever member 5 pivoted to the body of the pump 2. The bracket member 4 has a seat 6 which accommodates a connector member 7 associated with a tube 8 to be connected to the rotor assembly 3.
Preferably, the bracket member 4 has a base block 9 provided with a recess 10. From a top view, recess 10 is substantially triangular and accommodates the lower edge of the body of the pump 2 when the bracket member 4 is applied to it.
A U-shaped plate 1 1 and a bracket body 12, in which the seat 6 is formed, are associated with the base block 9.
The plate 1 1 forms a through seat 13 together with the base block 9. Lever 5 is inserted in seat 13 in order to associate the bracket member 4 with the body of the pump 2 in the position for use.
In order to fix the bracket body 12 to the base block 9, the bracket body has a protrusion 14, which is inserted in a recess 15 which is formed in the base block 9.
The seat 6 of the bracket body 12 has a passage section 16 for the insertion of the connector member 7 and at least one polygonal annular seat 17, which is wider than an axial passage section 18 of the body of the connector member 7.
The polygonal annular seat 17 accommodates a polygonal collar 77, which is provided in the connector member 7 of the tube 8.
The connector member 7 is in fact constituted by a substantially cylindrical body 70, on which the polygonal collar 77 is formed. In this embodiment, the polygonal collar 77 is constituted by a hexagonal portion with rounded teeth. The hexagonal portion may be inserted in the polygonal seat 17, which is likewise hexagonal with rounded seats which are appropriately shaped complementarily with respect to the hexagonal portion of the connector 7.
The operation of the connection system according to the invention is as follows. Before applying the tube 8 to the rotor assembly 3 of the pump 2, the bracket member 4 is applied to the lever 5, which is rotated outward beforehand.
The bracket member 4 is inserted on the lever 5 until the triangular seat 10 of the base block 9 abuts against the edge of the body of the pump 2.
At this point it is sufficient to insert the connector 7 in the seat 6 of the bracket member by passing the connector 7 through the passage seat 16 and by inserting from below the polygonal collar 77 of the connector 7 in the polygonal seat 17.
The polygonal configuration of the connector and of the respective seat ensures the locking in an axial direction of the tube and at the same time prevents any rotation thereof about its own axis. According to another embodiment of the invention, the connection system, designated by the reference numeral 101 , has a bracket member 104, which can be applied to a protruding member 105 of the body of the pump 2.
The bracket member 104 has a fixing body 106, which accommodates a Y-shaped connecting member of a double tube 108 to be connected to the rotor assembly 103. The bracket member 104 has a substantially quadrangular seat 109, which accommodates the protruding member 105 of the body of the pump 2.
The protruding member 105 is constituted by three protrusions 110 forming two longitudinal seats 1 1 1 for the two tube portions 108.
The quadrangular seat 109 is laterally provided with a recess 1 12, and the fixing body 106 can be fixed above it.
The fixing body 106 has a substantially Y-shaped seat 1 14 for accommodating the Y- shaped connector of the double tube 108.
The Y-shaped seat is open on the side of the fixing body 106 to be applied to the bracket member 104 by means of pin members 113 or the like. The Y-shaped seat 1 14 accommodates the Y-shaped connecting member in order to lock it in position, preventing it from being able to disengage from the fixing body 106 during the operation of the pump.
The operation of the connection system 101 entails that the bracket member is applied to the protruding member 105 of the body of the pump 2 and then the Y-shaped connector of the double tube 108 is applied and locked on the bracket member 104 by means of the fixing body 106.
In practice it has been found that the invention achieves the intended aim and objects, a connection system having been provided which allows to associate the tubes with a peristaltic pump rapidly and easily, ensuring at the same time maximum reliability and safety in operation. This application claims the priority of Italian Patent Application No. MI2006A000766, filed on 18 April 2006, the subject matter of which is incorporated herein by reference.
The system for connecting tubes to a peristaltic pump system according to the invention is susceptible of numerous modifications and variations, within the scope of the appended claims. All the details may be replaced with technically equivalent members.
The materials used, as well as the dimensions, may of course be any according to requirements and to the state of the art.

Claims

1. A system for connecting tubes to a peristaltic pump, characterized in that it comprises a bracket member which is detachably associated with the body of a peristaltic pump by means of a protruding member which is associated with said pump body, said bracket member comprising at least one seat for a connecting member which is rigidly coupled to at least one tube to be connected to said pump.
2. The connection system according to claim 1 , characterized in that said protruding member of said pump is constituted by a lever member which is pivoted to said pump body.
3. The connection system according to claim 1 or 2, characterized in that said bracket member comprises a base block which is provided with a recess which, in plan view, is substantially triangular, and accommodates the lower edge of the body of the pump when the bracket member is applied to it.
4. The connection system according to one or more of the preceding claims, characterized in that it comprises a U-shaped plate which is associated with said base block.
5. The connection system according to one or more of the preceding claims, characterized in that it comprises a bracket body which is associated with said base block and is provided with said seat.
6. The connection system according to one or more of the preceding claims, characterized in that said plate forms a through seat with said base block; said lever being inserted in said through seat in order to associate said bracket member with the body of the pump in the position for use.
7. The connection system according to one or more of the preceding claims, characterized in that said bracket body, in order to fix it to said base block, comprises a protrusion which is inserted in a recess formed in said base block.
8. The connection system according to one or more of the preceding claims, characterized in that said seat of the bracket body comprises a passage section for the insertion of the connection member and at least one polygonal annular seat which is wider than an axial passage section of the body of the connecting member.
9. The connection system according to one or more of the preceding claims, characterized in that said connection member is constituted by a substantially cylindrical body on which a polygonal collar is formed.
10. The connection system according to one or more of the preceding claims, characterized in that said polygonal annular seat accommodates said polygonal collar which is present in the tube connecting member.
1 1. The connection system according to one or more of the preceding claims, characterized in that said polygonal collar is constituted by a hexagonal portion with rounded teeth, said hexagonal portion entering said polygonal seat, which is hexagonal with rounded seats that are complementarily shaped to the hexagonal portion of said connecting member.
12. The connection system according to one or more of the preceding claims, characterized in that said bracket member comprises a fixing body which accommodates a Y-shaped connecting member of a double tube to be connected to a rotor assembly of said pump.
13. The connection system according to one or more of the preceding claims, characterized in that said bracket member comprises a substantially quadrangular seat accommodating said protruding member of the body of the pump.
14. The connection system according to one or more of the preceding claims, characterized in that said protruding member is constituted by three protrusions which form two longitudinal seats for the two tube segments.
15. The connection system according to one or more of the preceding claims, characterized in that said quadrangular seat is laterally provided with a recess.
16. The connection system according to one or more of the preceding claims, characterized in that said quadrangular seat is laterally provided with a recess and said fixing body can be fixed in an upper region thereto.
17. The connection system according to one or more of the preceding claims, characterized in that said fixing body comprises a substantially Y-shaped seat for accommodating said Y-shaped connector of the double tube.
18. The connection system according to one or more of the preceding claims, characterized in that said Y-shaped seat is open on the side of the fixing body to be applied to said bracket member by means of pin-like members or the like.
19. The connection system according to one or more of the preceding claims, characterized in that said Y-shaped seat accommodates the Y-shaped connecting member in order to lock it in position, preventing it from disengaging from the fixing body during the operation of the pump.
PCT/EP2007/000414 2006-04-18 2007-01-18 System for connecting tubes to a peristaltic pump WO2007118520A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2006A000766 2006-04-18
ITMI20060766 ITMI20060766A1 (en) 2006-04-18 2006-04-18 PIPE CONNECTION SYSTEM WITH A PERISTAL PUMP

Publications (1)

Publication Number Publication Date
WO2007118520A1 true WO2007118520A1 (en) 2007-10-25

Family

ID=37964001

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/000414 WO2007118520A1 (en) 2006-04-18 2007-01-18 System for connecting tubes to a peristaltic pump

Country Status (2)

Country Link
IT (1) ITMI20060766A1 (en)
WO (1) WO2007118520A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8406203U1 (en) * 1984-02-29 1984-05-30 B. Braun Melsungen Ag, 3508 Melsungen Infusion and transfusion device
US20040022655A1 (en) * 2002-06-21 2004-02-05 B. Braun Melsungen Ag Infusion pump
WO2005019648A1 (en) * 2003-08-21 2005-03-03 Medical Vision Research & Development Ab A hose connecting device for connection to a peristaltic pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8406203U1 (en) * 1984-02-29 1984-05-30 B. Braun Melsungen Ag, 3508 Melsungen Infusion and transfusion device
US20040022655A1 (en) * 2002-06-21 2004-02-05 B. Braun Melsungen Ag Infusion pump
WO2005019648A1 (en) * 2003-08-21 2005-03-03 Medical Vision Research & Development Ab A hose connecting device for connection to a peristaltic pump

Also Published As

Publication number Publication date
ITMI20060766A1 (en) 2007-10-19

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