US3877838A - Device for advancing material through a tube - Google Patents

Device for advancing material through a tube Download PDF

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US3877838A
US3877838A US387084A US38708473A US3877838A US 3877838 A US3877838 A US 3877838A US 387084 A US387084 A US 387084A US 38708473 A US38708473 A US 38708473A US 3877838 A US3877838 A US 3877838A
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inflatable members
inflatable
members
proximal
lumens
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Daniel S J Choy
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009Special features
    • F04B43/0054Special features particularities of the flexible members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/08Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10Pumps having fluid drive
    • F04B43/113Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/1133Pumps having fluid drive the actuating fluid being controlled by at least one valve with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series

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  • ABSTRACT A device for advancing material through a tube, particularly for advancing waste material through the intestinal tract in the absence or deficiency of peristalsis includes a pair of interconnected longitudinally spaced inflatable member each of which radially expands with increasing internal pressure initially at the proximal end with the expansion extending to the distal end.
  • a bilumenal elongated flexible shaft has lumens which extend from and communicate with respective expansion members and are connected to a fluid pressure source and exhaust through a periodically reversed four way sequencing valve to effect an inflation and deflation cycle in which the trailing expansion member is inflated with the deflation of the leading expansion member followed by the deflation of the trailing member and the inflation of the leading member to complete a single material advancing cycle which is periodically repeated.
  • the present invention relates generally to improvements in material conveying and pumping devices and it relates more particularly to an improved device for advancing a fluid solid material through a tube such as the intestinal tract or the like.
  • a commonly encountered consequence of surgery and many disorders is a complete or partial paralysis of the peristaltic movement along the intestinal tract with the accompanying inability to pass the feces out of the body and the accumulation of such feces within the intenstinal tract with highly undesirable results.
  • Many procedures and regimens have been practiced and proposed, both of a physical or mechanical nature and of a pharmacological or chemical nature, but these have proven generally unsatisfactory for many reasons. The procedures have often been ineffective or of a relatively uncomfortable inconvenient or harsh nature and have frequently been accompanied by highly undesirable side effects.
  • a pump is inserted in the nose and intestines to pump the waste material from the intestines. a procedure which leaves much to be desired.
  • Another object of the present invention is to provide an improved device for advancing a fluid solid material through atube.
  • Still another object of the present invention is to provide an improved device for advancing waste material through the intestinal tract in the absence or deficiency of natural or normal peristalsis.
  • a further object of the present invention is to provide a device of the above nature characterized by its reliability. simplicity. ease, comfort and relative convenience of use, freedom from undesirable side effects and great versatility and adaptability.
  • the present invention contemplates a device for advancing material through a tube, particularly for advancing fluid solid waste material through the intestinal tract comprising two or more end-to-end connected longitudinally spaced longitudinally elongated inflatable members, each of the inflatable members expanding radially at a progressively decreasing rate from its proximal to its distal end under the influence of increasing internal pressure and contracting radially at a progressively decreasing rate from the distal to the proximal end with the subsequent decrease in such pressure and an elongated highly flexible shaft containing a pair of lumens each of which communicates with respective alternate inflatable members.
  • the shaft is advantageously coaxial with and supports the inflatable members, the shaft being formed of a substantially expansion free material and the inflatable members being formed of an elastomeric material.
  • the peripheral walls of the inflatable members increase in thickness from their proximal to their distal ends and in another form they are provided with elastomeric peripheral ribs on their outside face which decrease in longitudinal spacing from their proximal to their distal ends.
  • the lumens are connected through a periodically actuated valve system to a source of compressed air, or to exhaust or a suction source so that alternate inflatable members are periodically inflated while the other inflatable members are deflated.
  • the improved device affords a simple. convenient and reliable arrangement for effecting the advance of waste material through the intestinal tract and out of the body in the absence or deficiency of peristalsis.
  • FIG. 1 is a diagrammatic view of a system employing the improved device
  • FIG. 2 is a longitudinal fragmentary sectional view of one form of the improved device illustrated in a deflated condition attendent to the insertion and positioning thereof in the intestinal tract. and showing by broken line the expanded conditions of the inflatable members.
  • FIG. 3 is a fragmentary side view thereof in a first stage of the material advancing cycle
  • FIG. 4 is a view similar to FIG. 3 in the next stage of the cycle
  • FIG. 5 is a view similar to FIG. 3 in the following stage of the cycle
  • FIG. 6 is a longitudinal sectional view of the expanded inflatable member
  • FIG. 7 is a view similar to FIG. 6 of another embodiment of the present invention.
  • the reference numeral 10 generally designates the improved material advancing device illustrated in its operative position within the intestinal tract 11 of a patient being treated and being employed in advancing a fluid solid waste material 12 along the intestinal tract 11 toward discharge from the body in the absence of deficiency of the normal peristaltic movement.
  • the device 10 includes a highly flexible tubular shaft 13 which permits the insertion and guiding of the operative end of the device 10 to the desired and optimum position within the tract 11 and is formed of any suitable material which is resistant to corrosion by the body fluids and is pharmocalogically inert, such as polyethylene, teflon, or the like.
  • the shaft I3 has a pair of lumens l4 and 16 formed therein and extending for the full length thereof and may be formed of a pair of side-by-side tubes joined to each other along their lengths.
  • each of the inflatable members 17, in its normal deflated state, that is, with the same internal and external pressures is of elongated tubular shape of somewhat greater diameter than the maximum width of shaft 13.
  • the confronting ends of successive inflatable members are necked down to form an interconnecting sleeve 18 which ensheaths and is hermetically sealed to the other face of shaft 13 to isolate the successive inflatable members 17, the distal end of shaft 13 and the front end of the leading inflatable member 17 being sealed and rounded, as at 19.
  • each inflatable member 17 increases in thickness from the proximal to the distal end thereof so that upon increasing the internal pressure of the inflatable member 17, the trailing or proximal end portion thereof first expands to the full diameter of the surrounding tract 11 and with further increase in the inflatable device internal pressure. it progressively forwardly radially expands until the inflatable member is fully radially expanded along the full length thereof, a forwardly advancing forwardly facing peripheral shoulder 21 being formed and effected during inflation, the shoulder receding during deflation of the inflatable member 17.
  • Ports or'openings 22 are formed in the lumen 14 in the area of alternate inflatable members 17 to provide gasseous communication between lumen 14 and these alternate inflatable members l7, and ports or openings 23 are formed in the lumen 16 in the areas of the other inflatable members 17 so that one group of alternate members 17 communicate with the lumen 14 and the other interdigitating group of members 17 communicate with lumen 16.
  • the lumens 14 and 16 are respectively connected to a pair of ports of a conventional four way valve 24 which includes a second pair of ports, one of which is connected to a pressurized gas source 26 which may be an air pump and the other port of which is connected either to exhaust to the atmosphere or to suction 27, which may be the inlet port of the air pump.
  • An adjustable timer 28 is provided for periodically reversing the valve 24 in any known fashion so that the lumens 14 and 16 communicate respectively with pressure source 26 and suction 27 and are periodically reversed to communicate with suction 27 and pressure source 26 respectively. Accordingly, alternate inflatable members 17 are periodically inflated and deflated while the other inflatable members are deflated and inflated in opposite phase.
  • the deflated inflatable members 17 are inserted, guided and advanced by means of the shaft 13 along the intestinal tract 11 to any desired or optimum position, for example, by inserting the inflatable members 17 and shaft 13 into the patients nasal cavity and advancing the shaft 13 and members 17 by pushing on, manipulating and guiding the shaft 13 to effect the progress thereof through the esophagus, stomach and intestine to the desired location. Thereafter, communication is effected between the gas pressure source and suction and the inflatable members 17 by way of the bilumenal shaft 13 and valve 24, and the timer 28 is then energized to periodically reverse the valve 24.
  • the leading inflatable member 17, of a pair thereof communicates with the exhaust or suction to completely contract the leading member 17 and the trailing member 17 communicates with the pressure source 26 to gradually inflate the trailing member 17 which initially fully expands at its proximal end to form shoulder 21 which progresses with the longitudinal advance of the radial expansion of trailing member 17 to forwardly advance the waste material 12 along the intestinal tract 11 by the progressing shoulder 21.
  • the timer 28 reverses the valve 24 to rapidly inflate the proximal portion of leading member 17, as shown in FIG. 4, and thereafter fully inflate the leading member 17 and deflate the trailing member 17 as shown in FIG. 5 to complete the cycle and advance the waste material 12 an increment along the intestinal tract 11.
  • the timer 28 then reverses the valve 24 to start the following cycle and the cycle is repeated at regular intervals as determined by the timer 28.
  • FIG. 7 of the drawing Another embodiment of the present invention is illustrated in FIG. 7 of the drawing and differs from that.
  • the inflatable member 32 includes an expandable elastomeric cylindrical peripheral wall 33 of uniform thickness and having integrally formed there-- with on its outer face a plurality of longitudinally spaced elastomeric peripheral ribs 34.
  • the spacing between the successive ribs 34 at the, proximal end of wall 33 is greater than the spacing between the ribs 34 at the distal end thereof, the spacing gradually decreasing from the proximal to the distal end.
  • a device for advancing material through a tube comprising a pair of end-to-end longitudinally spaced proximal and distal longitudinally elongated inflatable members, each of said inflatable members having means permitting each ofsaid inflatable members to expand radially at a progressively decreasing rate from the proximal to the distal portions thereof under the influence of an increase in internal pressure therein and to contract radially at a progressively decreasing rate from the distal to the proximal portions thereof with the decrease in said internal pressure, an elongated flexible shaft having a pair of lumens, each of saidlumens communicating with a respective inflatable member, and means simultaneously communicating with said inflatable members through respective lumens for alternately connecting one of said members to a source of pressurized fluid and the other of said members to exhaust.
  • each of said inflatable members has a peripheral wall which increases in thickness from the proximal to the distal end thereof.
  • a device for advancingmaterial througha tube comprising a pair of end-to-end longitudinally spaced proximal and distal longitudinally elongated inflatable members formed of elastomeric material, each of said inflatable members having longitudinally spaced pe- 7.
  • the device of claim 1 comprising a plurality of longitudinally spaced pairs of said inflatable members, said shaft extending coaxially through said inflatable members and each of said lumens communicating with alternate of said inflatable members.
  • the device of claim 1 including a source of pressure and means for periodically connecting said source of pressure alternately to said inflatable members.

Abstract

A device for advancing material through a tube, particularly for advancing waste material through the intestinal tract in the absence or deficiency of peristalsis includes a pair of interconnected longitudinally spaced inflatable member each of which radially expands with increasing internal pressure initially at the proximal end with the expansion extending to the distal end. A bilumenal elongated flexible shaft has lumens which extend from and communicate with respective expansion members and are connected to a fluid pressure source and exhaust through a periodically reversed four way sequencing valve to effect an inflation and deflation cycle in which the trailing expansion member is inflated with the deflation of the leading expansion member followed by the deflation of the trailing member and the inflation of the leading member to complete a single material advancing cycle which is periodically repeated.

Description

United States Patent Choy DEVICE FOR ADVANCING MATERIAL THROUGH A TUBE [76] Inventor: Daniel S. J. Choy, 892 Riverbank Rd., Stamford, Conn. 06903 221 Filed: Aug. 9, 1973 [21] Appl. No.: 387,084
[521' US. Cl. 417/394; 128/1 D; 128/344; 417/474 [51] Int. Cl... F04b 43/08; F04b 43/10; A6lb 19/00 [58] Field of Search 417/394, 474, 475, 479; 128/1 D, 349 B, 344
[56] References Cited UNITED STATES PATENTS 2,493,326 1/1950 Trinder 128/344 X 2,855,934 10/1958 Daughaday.... 128/349 B 3,406,633 10/1968 Schomburg.... 417/394 3,411,506 11/1968 Velasco 128/349 B 3,504,662 4/1970 Jones 128/1 D 3,560,114 2/1971 Boyle 474 X/ 3,692,018 9/1972 Goetz et a1. 128/1 D 26 ,2 PRESSURE SOUQC E SUCTION Primary Examiner-C. J. l-lusar Assistant Examiner-Richard E. Gluck Attorney, Agent, or FirmWolder & Gross [57] ABSTRACT A device for advancing material through a tube, particularly for advancing waste material through the intestinal tract in the absence or deficiency of peristalsis includes a pair of interconnected longitudinally spaced inflatable member each of which radially expands with increasing internal pressure initially at the proximal end with the expansion extending to the distal end. A bilumenal elongated flexible shaft has lumens which extend from and communicate with respective expansion members and are connected to a fluid pressure source and exhaust through a periodically reversed four way sequencing valve to effect an inflation and deflation cycle in which the trailing expansion member is inflated with the deflation of the leading expansion member followed by the deflation of the trailing member and the inflation of the leading member to complete a single material advancing cycle which is periodically repeated.
8 Claims, 7 Drawing Figures DEVICE FOR ADVANCING MATERIAL THROUGH A TUBE BACKGROUND OF THE INVENTION The present invention relates generally to improvements in material conveying and pumping devices and it relates more particularly to an improved device for advancing a fluid solid material through a tube such as the intestinal tract or the like.
A commonly encountered consequence of surgery and many disorders is a complete or partial paralysis of the peristaltic movement along the intestinal tract with the accompanying inability to pass the feces out of the body and the accumulation of such feces within the intenstinal tract with highly undesirable results. Many procedures and regimens have been practiced and proposed, both of a physical or mechanical nature and of a pharmacological or chemical nature, but these have proven generally unsatisfactory for many reasons. The procedures have often been ineffective or of a relatively uncomfortable inconvenient or harsh nature and have frequently been accompanied by highly undesirable side effects. As a last resort in removing the feces or waste materials, a pump is inserted in the nose and intestines to pump the waste material from the intestines. a procedure which leaves much to be desired.
SUMMARY OF THE INVENTION It is a principal object of the present invention to provide an improved material conveying device.
Another object of the present invention is to provide an improved device for advancing a fluid solid material through atube.
Still another object of the present invention is to provide an improved device for advancing waste material through the intestinal tract in the absence or deficiency of natural or normal peristalsis.
A further object of the present invention is to provide a device of the above nature characterized by its reliability. simplicity. ease, comfort and relative convenience of use, freedom from undesirable side effects and great versatility and adaptability.
The above and other objects of the present invention will become apparent from a reading of the following description taken in conjunction with the accompanying drawings which illustrate preferred embodiments thereof.
In a sense, the present invention contemplates a device for advancing material through a tube, particularly for advancing fluid solid waste material through the intestinal tract comprising two or more end-to-end connected longitudinally spaced longitudinally elongated inflatable members, each of the inflatable members expanding radially at a progressively decreasing rate from its proximal to its distal end under the influence of increasing internal pressure and contracting radially at a progressively decreasing rate from the distal to the proximal end with the subsequent decrease in such pressure and an elongated highly flexible shaft containing a pair of lumens each of which communicates with respective alternate inflatable members.
The shaft is advantageously coaxial with and supports the inflatable members, the shaft being formed of a substantially expansion free material and the inflatable members being formed of an elastomeric material. In one form the peripheral walls of the inflatable members increase in thickness from their proximal to their distal ends and in another form they are provided with elastomeric peripheral ribs on their outside face which decrease in longitudinal spacing from their proximal to their distal ends. The lumens are connected through a periodically actuated valve system to a source of compressed air, or to exhaust or a suction source so that alternate inflatable members are periodically inflated while the other inflatable members are deflated.
The improved device affords a simple. convenient and reliable arrangement for effecting the advance of waste material through the intestinal tract and out of the body in the absence or deficiency of peristalsis.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagrammatic view of a system employing the improved device;
FIG. 2 is a longitudinal fragmentary sectional view of one form of the improved device illustrated in a deflated condition attendent to the insertion and positioning thereof in the intestinal tract. and showing by broken line the expanded conditions of the inflatable members.
FIG. 3 is a fragmentary side view thereof in a first stage of the material advancing cycle;
FIG. 4 is a view similar to FIG. 3 in the next stage of the cycle;
FIG. 5 is a view similar to FIG. 3 in the following stage of the cycle;
FIG. 6 is a longitudinal sectional view of the expanded inflatable member; and
FIG. 7 is a view similar to FIG. 6 of another embodiment of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, particularly FIGS. 1 to 6 thereof which illustrate a preferred embodiment of the present invention, the reference numeral 10 generally designates the improved material advancing device illustrated in its operative position within the intestinal tract 11 of a patient being treated and being employed in advancing a fluid solid waste material 12 along the intestinal tract 11 toward discharge from the body in the absence of deficiency of the normal peristaltic movement.
The device 10 includes a highly flexible tubular shaft 13 which permits the insertion and guiding of the operative end of the device 10 to the desired and optimum position within the tract 11 and is formed of any suitable material which is resistant to corrosion by the body fluids and is pharmocalogically inert, such as polyethylene, teflon, or the like. The shaft I3 has a pair of lumens l4 and 16 formed therein and extending for the full length thereof and may be formed of a pair of side-by-side tubes joined to each other along their lengths.
Carried by the shaft 13 and coaxial therewith are two or more longitudinally end-to-end regularly spaced similar inflatable members 17 formed of an elastomeric material such as natural or synthetic rubber, only two of which members 17 are fully illustrated. Each of the inflatable members 17, in its normal deflated state, that is, with the same internal and external pressures is of elongated tubular shape of somewhat greater diameter than the maximum width of shaft 13. The confronting ends of successive inflatable members are necked down to form an interconnecting sleeve 18 which ensheaths and is hermetically sealed to the other face of shaft 13 to isolate the successive inflatable members 17, the distal end of shaft 13 and the front end of the leading inflatable member 17 being sealed and rounded, as at 19. The peripheral cylindrical wall 20 of each inflatable member 17 increases in thickness from the proximal to the distal end thereof so that upon increasing the internal pressure of the inflatable member 17, the trailing or proximal end portion thereof first expands to the full diameter of the surrounding tract 11 and with further increase in the inflatable device internal pressure. it progressively forwardly radially expands until the inflatable member is fully radially expanded along the full length thereof, a forwardly advancing forwardly facing peripheral shoulder 21 being formed and effected during inflation, the shoulder receding during deflation of the inflatable member 17. Ports or'openings 22 are formed in the lumen 14 in the area of alternate inflatable members 17 to provide gasseous communication between lumen 14 and these alternate inflatable members l7, and ports or openings 23 are formed in the lumen 16 in the areas of the other inflatable members 17 so that one group of alternate members 17 communicate with the lumen 14 and the other interdigitating group of members 17 communicate with lumen 16.
The lumens 14 and 16 are respectively connected to a pair of ports of a conventional four way valve 24 which includes a second pair of ports, one of which is connected to a pressurized gas source 26 which may be an air pump and the other port of which is connected either to exhaust to the atmosphere or to suction 27, which may be the inlet port of the air pump. An adjustable timer 28 is provided for periodically reversing the valve 24 in any known fashion so that the lumens 14 and 16 communicate respectively with pressure source 26 and suction 27 and are periodically reversed to communicate with suction 27 and pressure source 26 respectively. Accordingly, alternate inflatable members 17 are periodically inflated and deflated while the other inflatable members are deflated and inflated in opposite phase.
Considering now the operation and application of the improved device in the advancing of wastematerial 12 along the intestinal tract 11 to discharge the waste material, the deflated inflatable members 17 are inserted, guided and advanced by means of the shaft 13 along the intestinal tract 11 to any desired or optimum position, for example, by inserting the inflatable members 17 and shaft 13 into the patients nasal cavity and advancing the shaft 13 and members 17 by pushing on, manipulating and guiding the shaft 13 to effect the progress thereof through the esophagus, stomach and intestine to the desired location. Thereafter, communication is effected between the gas pressure source and suction and the inflatable members 17 by way of the bilumenal shaft 13 and valve 24, and the timer 28 is then energized to periodically reverse the valve 24.
At the initiation of the cycle, as shown in FIG. 3, the leading inflatable member 17, of a pair thereof, communicates with the exhaust or suction to completely contract the leading member 17 and the trailing member 17 communicates with the pressure source 26 to gradually inflate the trailing member 17 which initially fully expands at its proximal end to form shoulder 21 which progresses with the longitudinal advance of the radial expansion of trailing member 17 to forwardly advance the waste material 12 along the intestinal tract 11 by the progressing shoulder 21. After the full expansion of the trailing member 17, the timer 28 reverses the valve 24 to rapidly inflate the proximal portion of leading member 17, as shown in FIG. 4, and thereafter fully inflate the leading member 17 and deflate the trailing member 17 as shown in FIG. 5 to complete the cycle and advance the waste material 12 an increment along the intestinal tract 11. The timer 28 then reverses the valve 24 to start the following cycle and the cycle is repeated at regular intervals as determined by the timer 28.
Another embodiment of the present invention is illustrated in FIG. 7 of the drawing and differs from that.
first described only in the construction of the inflatable member 32 which corresponds in function to the inflat-i able member 17, the devices being otherwise similar Specifically, the inflatable member 32 includes an expandable elastomeric cylindrical peripheral wall 33 of uniform thickness and having integrally formed there-- with on its outer face a plurality of longitudinally spaced elastomeric peripheral ribs 34. The spacing between the successive ribs 34 at the, proximal end of wall 33 is greater than the spacing between the ribs 34 at the distal end thereof, the spacing gradually decreasing from the proximal to the distal end. Thus, with the inflation of the inflatable member 32, the proximal end first expands to produce a forwardly facing shoulder, corresponding to shoulder 21 which advances and recedes with the inflation and deflation of the inflatable member 32 as explained in connection with inflatable member 17.
The operation and application of the device last described is similar to that first described.
While there have been described and illustrated preferred embodiments of the present invention, it is apparent that numerous alterations, omissions and additions may be made without'departing from the spirit thereof.
I claim:
1. A device for advancing material through a tube comprising a pair of end-to-end longitudinally spaced proximal and distal longitudinally elongated inflatable members, each of said inflatable members having means permitting each ofsaid inflatable members to expand radially at a progressively decreasing rate from the proximal to the distal portions thereof under the influence of an increase in internal pressure therein and to contract radially at a progressively decreasing rate from the distal to the proximal portions thereof with the decrease in said internal pressure, an elongated flexible shaft having a pair of lumens, each of saidlumens communicating with a respective inflatable member, and means simultaneously communicating with said inflatable members through respective lumens for alternately connecting one of said members to a source of pressurized fluid and the other of said members to exhaust.
2. The device of claim 1 wherein said inflatable members are formed of an elastomeric material.
3. The device of claim 2 wherein each of said inflatable members has a peripheral wall which increases in thickness from the proximal to the distal end thereof.
4. A device for advancingmaterial througha tube comprising a pair of end-to-end longitudinally spaced proximal and distal longitudinally elongated inflatable members formed of elastomeric material, each of said inflatable members having longitudinally spaced pe- 7. The device of claim 1 comprising a plurality of longitudinally spaced pairs of said inflatable members, said shaft extending coaxially through said inflatable members and each of said lumens communicating with alternate of said inflatable members.
8. The device of claim 1 including a source of pressure and means for periodically connecting said source of pressure alternately to said inflatable members.

Claims (8)

1. A device for advancing material through a tube comprising a pair of end-to-end longitudinally spaced proximal and distal longitudinally elongated inflatable members, each of said inflatable members having means permitting each of said inflatable members to expand radially at a progressively decreasing rate from the proximal to the distal portions thereof under the influence of an increase in internal pressure therein and to contract radially at a progressively decreasing rate from the distal to the proximal portions thereof with the decrease in said internal pressure, an elongated flexible shaft having a pair of lumens, each of said lumens communicating with a respective inflatable member, and means simultaneously communicating with said inflatable members through respective lumens for alternately connecting one of said members to a source of pressurized fluid and the other of said members to exhaust.
2. The device of claim 1 wherein said inflatable members are formed of an elastomeric material.
3. The device of claim 2 wherein each of said inflatable members has a peripheral wall which increases in thickness from the proximal to the distal end thereof.
4. A device for advancing material through a tube comprising a pair of end-to-end longitudinally spaced proximal and distal longitudinally elongated inflatable members formed of elastomeric material, each of said inflatable members having longitudinally spaced peripheral elastomeric ribs formed on the wall thereof, the spacing between successive ribs decreasing from the proximal to the distal end of said inflatable member, and an elongated flexible shaft having a pair of lumens, each of said lumens communicating with a respective inflatable member.
5. The device of claim 4 wherein said ribs are formed on the outside face of said wall.
6. The device of claim 1 wherein said shaft extends coaxially through said inflatable members.
7. The device of claim 1 comprising a plurality of longitudinally spaced pairs of said inflatable members, said shaft extending coaxially through said inflatable members and each of said lumens communicating with alternate of said inflatable members.
8. The device of claim 1 including a source of pressure and means for periodically connecting said source of pressure alternately to said inflatable members.
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US4083369A (en) * 1976-07-02 1978-04-11 Manfred Sinnreich Surgical instruments
US4106002A (en) * 1976-12-06 1978-08-08 Hogue Jr Robert J Tourniquet pressure monitor
US4243030A (en) * 1978-08-18 1981-01-06 Massachusetts Institute Of Technology Implantable programmed microinfusion apparatus
US4261339A (en) * 1978-03-06 1981-04-14 Datascope Corp. Balloon catheter with rotatable support
US4327709A (en) * 1978-03-06 1982-05-04 Datascope Corp. Apparatus and method for the percutaneous introduction of intra-aortic balloons into the human body
US4546759A (en) * 1983-07-29 1985-10-15 Mladen Solar Method and apparatus for assisting human heart function
US4625712A (en) * 1983-09-28 1986-12-02 Nimbus, Inc. High-capacity intravascular blood pump utilizing percutaneous access
US4669465A (en) * 1984-12-10 1987-06-02 Gv Medical, Inc. Laser catheter control and connecting apparatus
US4702412A (en) * 1986-08-15 1987-10-27 Alex Zelczer Zone control apparatus for central heating and/or cooling systems
US5040955A (en) * 1990-06-20 1991-08-20 Honeywell Inc. Peristaltic pump having inflatable pumping members
WO2000008336A2 (en) * 1998-08-05 2000-02-17 Shurflo Pump Manufacturing Co. Fluid driven pump and portioning check valve
US20050119662A1 (en) * 1994-01-26 2005-06-02 Kyphon Inc. Systems and methods for treating fractured or diseased bone using expandable bodies
US20060100635A1 (en) * 1994-01-26 2006-05-11 Kyphon, Inc. Inflatable device for use in surgical protocol relating to fixation of bone
US20090264819A1 (en) * 2008-04-16 2009-10-22 Cardiatis S.A. Method for controlling the systemic pressure in cardiac operations

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US2855934A (en) * 1956-02-09 1958-10-14 Jr William E Daughaday Self-propelled tube
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US3504662A (en) * 1967-05-16 1970-04-07 Avco Corp Intra-arterial blood pump
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US2855934A (en) * 1956-02-09 1958-10-14 Jr William E Daughaday Self-propelled tube
US3411506A (en) * 1966-04-11 1968-11-19 Velasco Adolfo Guevara Method and apparatus for hemostasis
US3406633A (en) * 1966-11-07 1968-10-22 Ibm Collapsible chamber pump
US3504662A (en) * 1967-05-16 1970-04-07 Avco Corp Intra-arterial blood pump
US3560114A (en) * 1968-02-06 1971-02-02 Bede Alfred Boyle Pump
US3692018A (en) * 1970-02-11 1972-09-19 Robert H Goetz Cardiac assistance device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083369A (en) * 1976-07-02 1978-04-11 Manfred Sinnreich Surgical instruments
US4106002A (en) * 1976-12-06 1978-08-08 Hogue Jr Robert J Tourniquet pressure monitor
US4261339A (en) * 1978-03-06 1981-04-14 Datascope Corp. Balloon catheter with rotatable support
US4327709A (en) * 1978-03-06 1982-05-04 Datascope Corp. Apparatus and method for the percutaneous introduction of intra-aortic balloons into the human body
US4346698A (en) * 1978-03-06 1982-08-31 Datascope Corp. Balloon catheter with rotatable support
US4243030A (en) * 1978-08-18 1981-01-06 Massachusetts Institute Of Technology Implantable programmed microinfusion apparatus
US4546759A (en) * 1983-07-29 1985-10-15 Mladen Solar Method and apparatus for assisting human heart function
US4625712A (en) * 1983-09-28 1986-12-02 Nimbus, Inc. High-capacity intravascular blood pump utilizing percutaneous access
US4669465A (en) * 1984-12-10 1987-06-02 Gv Medical, Inc. Laser catheter control and connecting apparatus
US4702412A (en) * 1986-08-15 1987-10-27 Alex Zelczer Zone control apparatus for central heating and/or cooling systems
US5040955A (en) * 1990-06-20 1991-08-20 Honeywell Inc. Peristaltic pump having inflatable pumping members
US20050119662A1 (en) * 1994-01-26 2005-06-02 Kyphon Inc. Systems and methods for treating fractured or diseased bone using expandable bodies
US20060100635A1 (en) * 1994-01-26 2006-05-11 Kyphon, Inc. Inflatable device for use in surgical protocol relating to fixation of bone
US20100168755A1 (en) * 1994-01-26 2010-07-01 Kyphon Sarl Systems and methods for treating fractured or diseased bone using expandable bodies
WO2000008336A2 (en) * 1998-08-05 2000-02-17 Shurflo Pump Manufacturing Co. Fluid driven pump and portioning check valve
US6162027A (en) * 1998-08-05 2000-12-19 Shurflo Pump Manufacturing Co. Fluid driven pump and portioning check valve
US20090264819A1 (en) * 2008-04-16 2009-10-22 Cardiatis S.A. Method for controlling the systemic pressure in cardiac operations

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