GB2336314A - Angularly adjustable leg support apparatus for fitting to an operating table - Google Patents

Angularly adjustable leg support apparatus for fitting to an operating table Download PDF

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Publication number
GB2336314A
GB2336314A GB9807954A GB9807954A GB2336314A GB 2336314 A GB2336314 A GB 2336314A GB 9807954 A GB9807954 A GB 9807954A GB 9807954 A GB9807954 A GB 9807954A GB 2336314 A GB2336314 A GB 2336314A
Authority
GB
United Kingdom
Prior art keywords
support member
patient
support apparatus
support
tibia
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Withdrawn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
GB9807954A
Other versions
GB9807954D0 (en
Inventor
Giovanni Ambroselli
Bryan Smith
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9807954A priority Critical patent/GB2336314A/en
Publication of GB9807954D0 publication Critical patent/GB9807954D0/en
Publication of GB2336314A publication Critical patent/GB2336314A/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/0036—Orthopaedic operating tables
    • A61G13/0063—Orthopaedic operating tables specially adapted for knee surgeries
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/101—Clamping means for connecting accessories to the operating table
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
    • A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
    • A61G13/1245—Knees, upper or lower legs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
    • A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
    • A61G13/125—Ankles or feet

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

A support apparatus for fitting to an operating table comprises a support member 4 for receiving a lower leg and/or foot of a supine patient to hold the leg of the patient substantially upright and flexed at the knee. The support being slidably located in an elongate aperture 14 and mounted so as to allow pivoting of the support around a horizontal axis B and/or rotation around axis C. Pivot joint preferably being a ball and socket arrangement. Arm 16 arranged to rotate about axis D. The apparatus being capable of fixing the desired orientation of the support member during surgery.

Description

2336314 Surgical Apparatus The present invention relates to an arrangement
for holding the leg of a supine patient in a desired orientation during surgery, in particular during surgery upon the patient's knee or lower leg.
In performing surgery upon the knee or lower leg of a supine patient, it is typically necessary to flex or twist the patient's leg to achieve a desired orientation and/or distraction of the bones of the knee joint.
Most often, orientation of the patient's leg is achieved manually through direct manipulation of the leg by a scrubbed assistant. However, this method has the obvious drawbacks that it is wasteful of manpower and that it is difficult to maintain stability of the knee joint or lower leg over a period of time.
We have now devised an arrangement for holding the leg of a supine patient in a desired orientation during surgery which overcomes the above mentioned drawbacks of manual manipulation and support of the patient's leg.
According to a first aspect of the present invention, there is provided a support apparatus for fitting to an operating table and comprising a support member for receiving the lower leg and/or foot of a supine patient to hold the leg of the patient substantially upright and flexed at the knee, and means for adjusting the angle of rotation of the support member about an axis co-axial with or parallel to the longitudinal axis of the patient's tibia to vary the degree of tibial rotation of the patient's lower leg.
Preferably the support apparatus comprises means for adjusting the angle of rotation of the support member about a vertical axis to vary--- the degree of varus or valgus displacement of the pati4Eint's lower leg, the effect of which may be to distract the bones of the patients knee joint.
Preferably the support apparatus comprises means for adjustably locating the support member in a horizontal plane coplanar with or parallel to the surface of the operating table.
2 Preferably the means for adjustably locating the support member in a horizontal plane provide for linear adjustment of the support member towards and away from the patient's hip, to vary the degree of flexion of the patient's knee joint, and/or for arcuate adjustment of the support member through an angle about a vertical axis substantially at the patient's hip, to vary the degree of abduction or adduction of the patient's leg.
Preferably the support apparatus comprises means for adjusting the height of the support member to raise and lower the patient's leg.
The support member is preferably arranged to pivot about an axis extending perpendicular to the patient's tibia at or adjacent the distal end of the patient's lower leg, which axis preferably extends transversely of the patient's tibia.
Where the location of the support member is adjustable towards or away from the patient's hip, or to accommodate any variation in height of the support member, the support member is preferably arranged to pivot about an axis extending laterally of the patient's tibia to allow the necessary flexion or extension of the patient's knee and/or hip joints. Also, with the location of the support member fixed in the horizontal plane, the lower portion of the patient's leg may be pulled away from its upper portion to distract the bones of the patient's knee joint. Preferably the support apparatus comprises means for clamping the support member in place to maintain distraction of the knee bones when the distracting force is removed.
The support apparatus may also or otherwise be arranged to provide lateral pivoting of the patient's tibia about said perpendicular axis.
Preferably the support member comprises one half of a ball and socket joint situated at or adjacent the distal end of the patient's lower leg and arranged to provide pivoting of the support member about the joint and/or rotation of the support member about a vertical axis extending through the joint and/or rotation of the support member about the longitudinal axis of the patient's tibia. Preferably the ball and socket joint comprises a clamp for fixing the support 3 member in any desired orientation.
Preferably the support apparatus comprises a base member arranged to sit upon the operating table surface and to which the support member is attached. Preferably the base member is held in place by one or more brackets which preferably allow the base member to be adjusted laterally and vertically relative to the surface of the operating table, and are preferably attached to the side of the operating table so that barrier means may be introduced between the support apparatus and the surface of the operating table to maintain sterility. Preferably the base member comprises a rectangular panel whose top surface is preferably formed with one or more sets of apertures for receiving respective projections in overlying portions of said one or more brackets. Preferably the support apparatus comprises graduated means for indicating the orientation of the support member. Thus, the patient's tibia may be subjected to a pre-determined degree of angular displacement, or a precise measure of the angular displacement of the patient's tibia may be recorded. 20 The support apparatus may comprise one or more electrical, pneumatic and/or hydraulic actuators for adjusting the orientation and/or horizontal location of the support member. In this case, the support apparatus preferably comprises one or more electronic transducers for providing respective output signals according to the degree or rate of displacement of the support member, and control means for operating said one or more actuators according to the outputs of said one or more transducers to achieve the desired displacement the support member. It will be appreciated that the control means may act to vary both the velocity and the trajectory of the support member as it is displaced.
Preferably the support member comprises a boot or shoe which may be detached from the support apparatus to be disposed of, cleaned or more readily attached to a patient's foot/lower leg.
According to a second aspect of the present invention, there is provided a support apparatus for fitting to an operating table and comprising a support member for receiving the lower leg and/or foot of a supine patient and comprising 4 one half of a ball and socket joint situated at or adjacent the distal end of the patient's lower leg and arranged to provide pivoting of the support member about the joint, rotation of the support member about a vertical axis extending through the joint and rotation of the support member about the longitudinal axis of the patient's tibia, and comprising a clamp for fixing the support member in any desired orientation.
Preferably the support apparatus comprises means for adjustably locating the support member in a horizontal plane coplanar with or parallel to the surface of the operating table.
According to a third aspect of the present invention, there is provided an operating table comprising a support member for receiving the lower leg and/or foot of a supine patient to hold the leg of the patient substantially upright and flexed at the knee, and means for adjusting the angle of rotation of the support member about an axis co-axial with or parallel to the longitudinal axis of the patient's tibia to vary the degree of tibial rotation of the patient's lower leg.
According to a fourth aspect of the present invention, there is provided an operating table comprising a support member for receiving the lower leg and/or foot of a supine patient and comprising one half of a ball and socket joint situated at or adjacent the distal end of the patient's lower leg and arranged to provide pivoting of the support member about the joint, rotation of the support member about a vertical axis extending through the joint and rotation of the support member about the longitudinal axis of the patient's tibia, and comprising a clamp for fixing the support member in any desired orientation.
Embodiments of the present invention will now be described by way of examples only and with reference to the accompanying drawings, in which:
Figure 1 is a side elevation of a support apparatus in accordance with the present invention; Figure 2 is a plan view of the support apparatus of Figure 1; Figure 3 is an end view of the support apparatus; Figure 4 is a perspective view of preferred arrangement for securing the support apparatus to an operating table; Figure 5 is a section through the arrangement of Figure 4 along the line A-A', showing a barrier sheet fitted between the support apparatus and the operating table; and 5 Figures 6 and 7 are perspective views of the two parts of a preferred arrangement for mounting the support member to the base member of the support apparatus. Referring to Figures 1 to 3 of the drawings, a support apparatus is shown comprising a base member in the form of a horizontal platform 2 which may be arranged on top of an operating table so that a patient may sit in an upright or reclined position on the operating table and have his leg held in a particular orientation by a support member 4 comprising a rear portion 6 for supporting the patient's lower leg and a base portion 8 for supporting the patient's foot.
Projections 10 formed on either side of the rear portion 6 restrict lateral movement of the patient's lower leg. However, it will be appreciated that the patient's lower leg may also or otherwise be restrained by means such as straps, clamps, etc., or a detachable boot may be provided into which the foot and/or lower leg of the patient is fitted.
As shown in Figures 1 and 2, the support member 4 comprises a stem 12 which extends substantially in line with the patient's tibia and about whose longitudinal axis A the support member 4 is arranged to rotate. The stem 12 is slidably located within an elongate aperture 14 formed in a swinging arm 16 to which the stem is mounted to provide forwards or backwards pivoting of the support member 4 about a horizontal axis B and/or rotation of the support member about a vertical axis C.
The swinging arm 16 is arranged to rotate about a vertical axis D situated substantially below the patient's hip joint to provide abduction or adduction of the patient's leg.
Figure 3 shows the stem 12 mounted to provide lateral tilting of the support member 4 about a horizontal axis E which extends coaxially with the longitudinal axis of the swinging arm 16.
Means (not shown) allow the support member to be clamped in position in the horizontal plane, and in any 6 selected orientation.
The various parts of the support apparatus may also comprise one or more extensions or handles which may be gripped to provide leverage for re-orientating the support member.
It will be appreciated that as well as providing for re-orientation of the knee joint, the support member may also be pivoted and/or rotated to take into account any deformity that may already be present in the patient's leg, for example any innate tibial turning or varus/valgus offset of the patient's lower leg.
Referring to Figure 2, the base member 2 is formed at each end with a plurality of apertures 18, which allow the support apparatus to be secured to the surface of an operating table by means of the arrangement shown in Figures 4 and 5.
An L-shaped bracket 20 situated at each end of the support apparatus is attached by means of a clamp 22 to the side rail 24 of an operating table 26 so that respective projections 28 formed in each bracket locate within the apertures 18 formed at each end of the base member 2, thereby compressing an underlying portion of a mattress 30.
As shown in Figure 5, this particular arrangement allows barrier means, in the form of a drape 32, to be introduced between the base member 2 and the mattress 30 to maintain sterility of the support apparatus. Also, the relative alignment between the base member apertures 18 and their corresponding bracket projections 28 may be varied to adjust the position of the base member 2 laterally relative to the surface of the mattress 30.
Preferred means for mounting the support member 4 to the swinging arm 16 are shown in Figures 6 and 7. The stem 12 of the support member is formed at its distal end with a ball 34 which is secured within a corresponding socket 36 formed in an intermediate member 38 by an end-cap 39. Means (not shown) allow the ball and socket joint to be clamped in any desired orientation. Either the stem or the intermediate member may comprise a telescopically adjustable portion for varying its respective length.
The intermediate member 38 is formed at its opposite end with a projection 40 which may be fitted into one or other 7 of two sockets 42,44 formed in a block 46 arranged to slide backwards and forwards along the swinging arm 16. To enable the block to slide in this manner, a pair of channels 48 are provided in the block 46, through which corresponding rails 5 formed in the swinging arm may run.
A spring loaded pin 50 is arranged to pass through respective passages 52, 54 in the block 46 and in the projection 40 to secure the projection 40 in the socket 42. The pin 50 provides an axle about which the intermediate member 38 may pivot within between the limits defined by the bottom and rear walls 56,58 of the socket, the intermediate member being released by pulling on a knob 55 at its projecting end. However, when the projection 40 is fitted into socket 44, the intermediate member 38 is prevented from pivoting.
This particular arrangement enables the support apparatus to be operated in two different ways. When the projection 40 is fitted into the socket 42, the patient's knee joint is permitted to flex during flexion or extension of the patient's leg in any desired orientation. However, when the projection 40 is fitted into the socket 44, the apparatus may be used to distract the bones of the knee joint by fixing the orientation of the support member 4 and extending the patient's leg.
The support apparatus thus described provides an improved means for holding the leg of a supine patient in a desired orientation during surgery, in particular during surgery upon the patient's knee.
8

Claims (1)

  1. Claims
    1) A support apparatus for fitting to an operating table and comprising a support member f or receiving the lower leg and/or foot of a supine patient to hold the leg of the patient substantially upright and flexed at the knee, and means for adjusting the angle of rotation of the support member about an axis co-axial with or parallel to the longitudinal axis of the patient's tibia to vary the degree of tibial rotation of the patient's lower leg.
    2) A support apparatus as claimed in Claim 1, comprising means for adjusting the angle of rotation of the support member about a vertical axis to vary the degree of varus or valgus displacement of the patient's lower leg.
    3) A support apparatus as claimed in Claim 1 or Claim 2, 15 comprising means for adjustably locating the support member in a horizontal plane coplanar with or parallel to the surface of the operating table.
    4) A support apparatus as claimed in Claim 3, where-in the means for adjustably locating the support member in a horizontal plane provide for linear adjustment of the support member towards and away from the patient's hip, to vary the degree of flexion of the patient's knee joint.
    5) A support apparatus as claimed in Claim 3 or Claim 4, wherein the means for adjustably locating the support member in a horizontal plane provide for arcuate adjustment of the support member through an angle about a vertical axis substantially at the patient"s hip, to vary the degree of abduction or adduction of the patient's leg.
    6) A support apparatus as claimed in any preceding claim 30 comprising means for adjusting the height of the support member to raise and lower the patient's leg.
    7) A support apparatus as claimed in any preceding claim, 9 wherein the support member is arranged to pivot about an axis extending perpendicular to the patient's tibia at or adjacent the distal end of the patientfs lower leg 8) A support apparatus as claimed in Claim 7, arranged f or 5 said axis extending perpendicular to the patientf s tibia to extend through the axis of the patient's tibia.
    9) A support apparatus as claimed in Claim 7 or Claim 8, arranged for said axis extending perpendicular to the patient's tibia to extend laterally of the patient's tibia.
    10) A support apparatus as claimed in any of claims 7 to 9, arranged to provide lateral pivoting of the patient's tibia about said axis extending perpendicular to the patient"s tibia.
    11) A support apparatus as claimed in any preceding claim, comprising means for clamping the support member in place.
    12) A support apparatus as claimed in Claim 1, wherein the support member comprises one half of a ball and socket joint situated at or adjacent the distal end of the patient's lower leg and arranged to provide pivoting of the support member about the joint and/or rotation of the support member about a vertical axis extending through the joint and/or rotation of the support member about the longitudinal axis of the patient's tibia.
    13) A support apparatus as claimed in Claim 12, wherein the ball and socket joint comprises a clamp for fixing the support member in any desired orientation.
    14) A support apparatus as claimed in any preceding claim, comprising a base member arranged to sit upon the operating table surface and to which the support member is attached.
    15) A support apparatus as claimed in Claim 14, wherein the 30 base member is held in place by one or more brackets which allow the base member to be adjusted laterally and vertically relative to the surface of the operating table.
    16) A support apparatus as claimed in Claim 15, wherein the one or more brackets are attached to the side of the operating table so that barrier means may be introduced between the 5 support apparatus and the surface of the operating table.
    17) A support apparatus as claimed in Claim 15 or Claim 16, wherein the base member comprises a rectangular panel whose top surface is formed with one or more sets of apertures for receiving respective projections in overlying portions of the one or more brackets.
    18) A support apparatus as claimed in any preceding claim, comprising graduated means for indicating the orientation of the support member.
    19) A support apparatus as claimed in Claim 1, comprising one or more electrical, pneumatic andlor hydraulic actuators for adjusting the orientation andlor horizontal location of the support member.
    20) A support apparatus as claimed in Claim 19, comprising one or more electronic transducers f or providing respective output signals according to the degree or rate of displacement of the support member, and control means f or operating the one or more actuators according to the outputs of the one or more transducers to achieve the desired displacement the support member.
    21) A support apparatus as claimed in any preceding claim, wherein the support member comprises a boot or shoe which may be detached from the support apparatus.
    22) A support apparatus for fitting to an operating table and comprising a support member for receiving the lower leg and/or foot of a supine patient and comprising one half of a ball and socket joint situated at or adjacent the distal end of the patient's lower leg and arranged to provide pivoting of 11 the support member about the joint, rotation of the support member about a vertical axis extending through the joint and rotation of the support member about the longitudinal axis of the patient's tibia, and comprising a clamp for fixing the 5 support member in any desired orientation.
    23) A support apparatus as claimed in Claim 22, comprising means for adjustably locating the support member in a horizontal plane coplanar with or parallel to the surface of the operating table.
    24) A support apparatus substantially as herein described with reference to the accompanying drawings.
    25) A support member for receiving the lower leg andlor f oot of a supine patient to hold the leg of the patient substantially upright and flexed at the knee, and means for adjusting the angle of rotation of the support member about an axis co- axial with or parallel to the longitudinal axis of the patient's tibia to vary the degree of tibial rotation of the patient's lower leg.
    26) A support member substantially as herein described with reference to the accompanying drawings.
    27) An operating table comprising a support member for receiving the lower leg andlor foot of a supine patient and comprising one half of a ball and socket joint situated at or adjacent the distal end of the patient's lower leg and arranged to provide pivoting of the support member about the joint, rotation of the support mr about a vertical axis extending through the joint and rotation of the support member about the longitudinal axis of the patient's tibia, and comprising a clamp for fixing the support member in any desired orientation.
    28) An operating table substantially as herein described with reference to the accompanying drawings.
GB9807954A 1998-04-16 1998-04-16 Angularly adjustable leg support apparatus for fitting to an operating table Withdrawn GB2336314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9807954A GB2336314A (en) 1998-04-16 1998-04-16 Angularly adjustable leg support apparatus for fitting to an operating table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9807954A GB2336314A (en) 1998-04-16 1998-04-16 Angularly adjustable leg support apparatus for fitting to an operating table

Publications (2)

Publication Number Publication Date
GB9807954D0 GB9807954D0 (en) 1998-06-17
GB2336314A true GB2336314A (en) 1999-10-20

Family

ID=10830347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9807954A Withdrawn GB2336314A (en) 1998-04-16 1998-04-16 Angularly adjustable leg support apparatus for fitting to an operating table

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GB (1) GB2336314A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2098484A (en) * 1981-05-15 1982-11-24 Sugarman Edward D Limb positioning device
US4708510A (en) * 1986-04-17 1987-11-24 Mcconnell Bernard E Ball joint coupling
WO1989010103A1 (en) * 1988-04-19 1989-11-02 Arthronix Corporation Limb supporting device for arthroscopic surgery
US4886258A (en) * 1988-08-24 1989-12-12 Scott James W Well leg operative support
US5582379A (en) * 1994-06-24 1996-12-10 Allen Medical Systems Adjustable limb support system
US5645079A (en) * 1994-12-02 1997-07-08 Zahiri; Hormoz Apparatus for mechanically holding, maneuvering and maintaining a body part of a patient during orthopedic surgery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2098484A (en) * 1981-05-15 1982-11-24 Sugarman Edward D Limb positioning device
US4708510A (en) * 1986-04-17 1987-11-24 Mcconnell Bernard E Ball joint coupling
WO1989010103A1 (en) * 1988-04-19 1989-11-02 Arthronix Corporation Limb supporting device for arthroscopic surgery
US4886258A (en) * 1988-08-24 1989-12-12 Scott James W Well leg operative support
US5582379A (en) * 1994-06-24 1996-12-10 Allen Medical Systems Adjustable limb support system
US5645079A (en) * 1994-12-02 1997-07-08 Zahiri; Hormoz Apparatus for mechanically holding, maneuvering and maintaining a body part of a patient during orthopedic surgery

Also Published As

Publication number Publication date
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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)