EP0254522A2 - Vorrichtung zur kontinuierlichen passiven Bewegung von Gliedmassen - Google Patents

Vorrichtung zur kontinuierlichen passiven Bewegung von Gliedmassen Download PDF

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Publication number
EP0254522A2
EP0254522A2 EP87306414A EP87306414A EP0254522A2 EP 0254522 A2 EP0254522 A2 EP 0254522A2 EP 87306414 A EP87306414 A EP 87306414A EP 87306414 A EP87306414 A EP 87306414A EP 0254522 A2 EP0254522 A2 EP 0254522A2
Authority
EP
European Patent Office
Prior art keywords
bag
limb
joint
inflation
inflated
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP87306414A
Other languages
English (en)
French (fr)
Other versions
EP0254522A3 (de
Inventor
Christopher John Kent Bulstrode
Richard Iain Sonley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smith and Nephew PLC
Original Assignee
Smith and Nephew Associated Companies PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB868617681A external-priority patent/GB8617681D0/en
Priority claimed from GB878702977A external-priority patent/GB8702977D0/en
Application filed by Smith and Nephew Associated Companies PLC filed Critical Smith and Nephew Associated Companies PLC
Publication of EP0254522A2 publication Critical patent/EP0254522A2/de
Publication of EP0254522A3 publication Critical patent/EP0254522A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H1/00—Apparatus for passive exercising; Vibrating apparatus ; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
    • A61H1/02—Stretching or bending or torsioning apparatus for exercising
    • A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
    • A61H1/0255—Both knee and hip of a patient, e.g. in supine or sitting position, the feet being moved in a plane substantially parallel to the body-symmetrical-plane
    • A61H1/0259—Both knee and hip of a patient, e.g. in supine or sitting position, the feet being moved in a plane substantially parallel to the body-symmetrical-plane moved by translation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1238—Driving means with hydraulic or pneumatic drive

Definitions

  • the present invention relates to a device for moving body joints and more particularly to the passive movement of joints ie. where joints are moved by the application of external forces.
  • the joints of humans or other animals can, after surgery or injury, become stiff during the period whilst the joint is healing. Slow and continuous movement of the joint during the period of healing can reduce the stiffness of the joint, stimulate healing of the joint and reduce the pain associated with the healing joint.
  • the present invention seeks to provide a safe and lightweight means of moving body joints in a slow and continuous manner, avoiding the disadvantages of human devices.
  • a device for the passive movement of limbs comprising co-operating inflatable bags and associated inflation and deflation means, wherein a first bag is adapted, when inflated to raise the joint and a second bag is adapted, when inflated to straighten the limb, said inflation and deflation means being arranged to alternately inflate one bag and deflate the other bag thereby allowing the limb to be alternately bent and raised at the joint and then straightened and lowered.
  • the invention as applied to the passive movement of legs, provides apparatus which comprises two inflatable bags and associated inflation and deflation means wherein the first bag is adapted to be placed under the knee and the second bag is adapted to be placed at the back of the leg, whereby inflation of the first bag and deflation of the second bag by the inflation and deflation means bends the leg at the knee and deflation on the first bag and inflation of the second bag by the inflation and deflation means straightens the leg.
  • the first bag is adapted to be placed under the knee and may be shaped such that when inflated, it also aids in the support of the thigh.
  • the first bag has a base which is preferably rectangular or trapezoidal, two end walls which can be for example trepezium in shape or, more preferably triangular and two or more side walls which can be for example rectangular.
  • the base of the first bag when rectangular in cross section is 20cm wide and 30cm long.
  • the triangular end walls have a base 30cm long with two equal sides each 25cm long.
  • the two side walls are 20cm wide and 25 high.
  • the sides of the triangular end walls are all unequal in length.
  • the bag may be rotated through the axis of the triangular end walls to provide three different apical heights.
  • the base of the first bag can for example rest upon the surface eg. bed on which the patient is lying.
  • the first bag may be attached to react against the second bag and may permanently or removably affixed thereto.
  • the first bag may comprise several independant chambers, it preferably comprises one inflatable chamber. More preferable ribs or septums are provided within the chamber to provide interconnecting chambers and more rigidity to the structure.
  • the first bag may also be part of a bellows arrangement whereby the bag fills the space between two hinged rigid or semi-rigid supporting members.
  • the second bag may be suitably shaped to support the flexor surface of the limb, and is preferably 'U' shaped in cross section, although bags which encircle the limb may also be employed.
  • the bag when applied to a leg the bag is adapted to be placed under the leg so that it covers the back and sides of the knee and the back and sides of both upper and lower leg, with the base of the 'U' shaped second bag covering the back of the leg and the arms of the 'U' shaped second bag covering the sides of the leg.
  • the 'U' shaped second bag can optionally extend down the leg to cover the heel and plantar region of the foot.
  • the 'U' shaped second bag is long and thin, for example about 70cm long and the side walls of the 'U' are between 5 and 15cm high. It is intended that where the second bag is described as being in the shape of the letter 'U', this description shall also include second bags in the shape of the letter 'C', a horseshoe and second bags in the shape of an interrupted circle.
  • the 'U' shaped second bag can be retained over the knee and leg by any conventional means such as straps passing over the dorsal surface of the limb or adhesives.
  • the second bag preferably comprises a single inflatable chamber.
  • first bags comprising more than one chamber may be employed.
  • the chambers may be internally supported with ribs or septa, preferably to form a number of interconnecting chambers.
  • pivotal means fitted to one end of the second bag which allows said second bag to move backwards and forwards when it is resting on a surface.
  • This pivotal means may consist of a third inflatable bag of circular cross-section which is attached to the second bag so as to allow the two to move in relation to each other.
  • the second bag may be arranged to raise, lower and support only the lower part of the limb.
  • the construction of the second bag may be similar to that of the first, with the triangular end wall shape being preferred.
  • a load spreading plate between the ridge of the bag and the flexor surface of the limb.
  • This plate may be connected by suitable pivotal means to another plate functioning in similar manner to support the upper limb and being interposed between the first bag and the flexor surface of, for example, the thigh. Both plates may be suitably shaped to generally conform to the contour of the limb surface.
  • means may be provided to adjustably secure the plate to the support to accomodate different leg lengths.
  • a number of holes may be provided in both arms of the support cooperating with pegs provided on the plate.
  • the inflation and deflation means can comprise either a single co-operating means or two or more separate means adapted to permit fluid, such as air to be passed into or withdrawn from the bags alternately.
  • the inflation and deflation means comprises for example an air pump, valves and a controlling means for regulating operation of the pump.
  • the pump and valves are so arranged that when one bag of the device is being inflated the other bag is being deflated.
  • the controlling means is used to regulate the rate of and times between inflation and deflation of the two bags of the device.
  • the inflation and deflation means can comprise two separate air pumps, valves and controlling means.
  • One of the air pumps is used to deflate and inflate the first bag of the device whilst the other air pump is used to deflate and inflate the second bag of the device.
  • the inflation and deflation means can be connected to the device by for example flexible plastic tubing.
  • the device When uninflated the device can be fitted easily to a joint such as a knee joint and then inflated.
  • the first and second bags are attached by tubing to the inflation and deflation means.
  • the first bag In the first cycle the first bag is inflated whilst the second bag is deflated. This has the first bag is then deflated and the second bag is inflated causing the joint to straighten.
  • the joint By alternating and repeating the two cycles the joint can be moved slowly and continuously
  • the second bag (12) 'U' shaped in cross-section is placed under the back and sides of the thigh, knee and calf of the leg and the heel of the foot.
  • the first bag (11) which is triangular in cross-section is placed so that its apex is opposite the angle of the knee and contacting the surface of the second bag (12) not in contact with the knee.
  • the second bag (12) is retained around the knee joint (13) by straps (14).
  • the bags may be fabricated from sheets and a transfer coated polyurethane fabric, welded together by radio frequency welding to form the bags.
  • the pivotal means (15) attached to the second bag (12) allows the second bag (12) to move backwards and forwards when it is resting on a surface.
  • the first and second bags (12 and 11) are attached by tubing (16) to the inflation and deflation means (17).
  • bag (11) is inflated whilst bag (12) is deflated. This causes the leg to be raised in the region of the knee and for the leg to bend at the knee. After a lapse of a predetermined period of time bag (12) is inflated whilst bag (11) is deflated causing the leg to be straightened and for the knee region to be lowered. Alternating cycles cause the leg to be repeatedly flexed
  • bag (11) is surrounded on two sides by a semi rigid support (18). This is constructed from thermoplastic (Sansplint).
  • the support is to endow a certain degree of rigidity to the device. It is hinged at the bag corner (19). This is achieved by either bonding in a hinge, by using a special hinged moulding, or by simply using a partial thickness slit on the plastic. This latter allows adequate flexion.
  • the plastic support will be designed to be as adjustable as possible to accommodate different leg lengths. This is achieved by using unequal lengths from the hinge and a series of holes (20) to which the thigh plate (21) is mounted. This allows adjustment by reversal of the hinge plates and secondly by sliding the thigh plate to an appropriate mounting hold. This is then pegged (22).
  • the maximum angle to which the hinge plates will open is determined by placing adjustable strap (25) between the open ends of the plates. These serve the dual purpose of also retaining the air bag.
  • the air bag is inflated and deflated on a timed cycle to raise and lower the upper leg of a prone patient.
  • a lower leg plate is attached to the thigh plate again by a simple hinge (24). The length of this may or may not be adjustable.
  • Bag (12) may or may not have a semi rigid support (18) similar to that for the thigh bag. The aim of the support is to enhance the stability of the bags.
  • the pump (17) used to control the bags may be of a simple diaphragm type and may incorporate a pressure regulating device (not shown) and will supply a motorised valve (not shown). This will direct the air supply to each bag in turn, allowing the other to deflate.
  • the cycle may or may not be adjustable and may vary from 2 to 15 minutes.
EP87306414A 1986-07-19 1987-07-20 Vorrichtung zur kontinuierlichen passiven Bewegung von Gliedmassen Withdrawn EP0254522A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB868617681A GB8617681D0 (en) 1986-07-19 1986-07-19 Passive motion device
GB8617681 1986-07-19
GB8702977 1987-02-10
GB878702977A GB8702977D0 (en) 1987-02-10 1987-02-10 Device

Publications (2)

Publication Number Publication Date
EP0254522A2 true EP0254522A2 (de) 1988-01-27
EP0254522A3 EP0254522A3 (de) 1989-04-05

Family

ID=26291068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87306414A Withdrawn EP0254522A3 (de) 1986-07-19 1987-07-20 Vorrichtung zur kontinuierlichen passiven Bewegung von Gliedmassen

Country Status (2)

Country Link
EP (1) EP0254522A3 (de)
AU (1) AU601448B2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665631A1 (fr) * 1990-08-10 1992-02-14 Diffusion Tech Fse Sarl Appareil pour la readaptation et la reeducation des parties d'articulation d'un patient.
CN108478381A (zh) * 2018-05-03 2018-09-04 上海交通大学医学院附属第九人民医院 一种安全的电动辅助膝关节腔抽液气囊装置
WO2019116254A1 (en) * 2017-12-12 2019-06-20 BLACHOWITZ, Marc Continuous passive motion apparatus
WO2019134202A1 (zh) * 2018-01-02 2019-07-11 北京理工大学 一种负压收缩弹性体驱动的柔性膝关节外骨骼

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1035755A (fr) * 1951-03-09 1953-08-31 Ensemble en matière souple constitué de corps gonflables et devenant rigide par gonflage
CH486881A (de) * 1968-03-07 1970-03-15 Zimmermann Hans Vorrichtung zur Beugung und Streckung der Wirbelsäule
US3536063A (en) * 1967-05-31 1970-10-27 Werding Winfried J Apparatus for therapeutic care of the legs
US3937215A (en) * 1975-06-03 1976-02-10 The United States Of America As Represented By The United States National Aeronautics And Space Administration Office Of General Counsel-Code Gp Therapeutic hand exerciser
US4003374A (en) * 1975-11-18 1977-01-18 Benjamin Mizrachy Methods and apparatuses for the prevention of venous thrombosis
FR2468360A1 (fr) * 1979-11-05 1981-05-08 Pecheux Jean Claude Attelle, du type pose, pour la mobilisation active du genou
GB2122905A (en) * 1982-06-14 1984-01-25 Robert John Dudley Welch Inflatable splint

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274399A (en) * 1980-01-29 1981-06-23 Jobst Institute, Inc. Therapeutic appliance for flexing joints

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1035755A (fr) * 1951-03-09 1953-08-31 Ensemble en matière souple constitué de corps gonflables et devenant rigide par gonflage
US3536063A (en) * 1967-05-31 1970-10-27 Werding Winfried J Apparatus for therapeutic care of the legs
CH486881A (de) * 1968-03-07 1970-03-15 Zimmermann Hans Vorrichtung zur Beugung und Streckung der Wirbelsäule
US3937215A (en) * 1975-06-03 1976-02-10 The United States Of America As Represented By The United States National Aeronautics And Space Administration Office Of General Counsel-Code Gp Therapeutic hand exerciser
US4003374A (en) * 1975-11-18 1977-01-18 Benjamin Mizrachy Methods and apparatuses for the prevention of venous thrombosis
FR2468360A1 (fr) * 1979-11-05 1981-05-08 Pecheux Jean Claude Attelle, du type pose, pour la mobilisation active du genou
GB2122905A (en) * 1982-06-14 1984-01-25 Robert John Dudley Welch Inflatable splint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665631A1 (fr) * 1990-08-10 1992-02-14 Diffusion Tech Fse Sarl Appareil pour la readaptation et la reeducation des parties d'articulation d'un patient.
WO2019116254A1 (en) * 2017-12-12 2019-06-20 BLACHOWITZ, Marc Continuous passive motion apparatus
US11596571B2 (en) 2017-12-12 2023-03-07 Medev Innovtions (Pty) Ltd. Continuous passive motion apparatus
WO2019134202A1 (zh) * 2018-01-02 2019-07-11 北京理工大学 一种负压收缩弹性体驱动的柔性膝关节外骨骼
US11497672B2 (en) 2018-01-02 2022-11-15 Beijing Institute Of Technology Soft knee exoskeleton driven by negative-pressure linear actuator
CN108478381A (zh) * 2018-05-03 2018-09-04 上海交通大学医学院附属第九人民医院 一种安全的电动辅助膝关节腔抽液气囊装置

Also Published As

Publication number Publication date
AU7593787A (en) 1988-01-21
EP0254522A3 (de) 1989-04-05
AU601448B2 (en) 1990-09-13

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Inventor name: BULSTRODE, CHRISTOPHER JOHN KENT