GB2448727A - Clip for a patient hoist with stud and non-linear channel - Google Patents

Clip for a patient hoist with stud and non-linear channel Download PDF

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Publication number
GB2448727A
GB2448727A GB0708011A GB0708011A GB2448727A GB 2448727 A GB2448727 A GB 2448727A GB 0708011 A GB0708011 A GB 0708011A GB 0708011 A GB0708011 A GB 0708011A GB 2448727 A GB2448727 A GB 2448727A
Authority
GB
United Kingdom
Prior art keywords
stud
clip
aperture
head
width
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.)
Granted
Application number
GB0708011A
Other versions
GB2448727B (en
GB0708011D0 (en
Inventor
Dennis George Pearson-Love
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 GB0708011.2A priority Critical patent/GB2448727B/en
Publication of GB0708011D0 publication Critical patent/GB0708011D0/en
Priority to PCT/GB2008/001479 priority patent/WO2008132472A1/en
Publication of GB2448727A publication Critical patent/GB2448727A/en
Application granted granted Critical
Publication of GB2448727B publication Critical patent/GB2448727B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1073—Parts, details or accessories
    • A61G7/1078—Clamps for flexible harnesses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/09—Releasable fastening devices with a stud engaging a keyhole slot

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Clamps And Clips (AREA)

Abstract

A clip 50 for a patient hoist comprises a body 60 defining a stud insertion aperture 80, a stud retention aperture 90 and a non linear channel 100 connecting the stud insertion aperture 80 and stud retention aperture 90. In use, the clip is rotatable between a first orientation where the stud may be passed through the stud insertion aperture 80 and a second orientation where the stud is located within the stud retention aperture 90. The stud insertion aperture 80 may be dimensioned such that is at least the width of the head of the stud on a first axis and less than the width of the head of the stud in a second axis. The non-linear channel 100 may be substantially L-shaped and may be wider than a neck of the stud and narrower than the head of the stud. The clip may comprise at least one harness location portion 70 and may be used in a harness for supporting a patient.

Description

HOIST CLIP
Background to the invention
The present invention relates to a clip for a patient hoist.
It is well known to provide a clip for a patient harness comprising a headed stud which is secured to the lifting arm of a patient hoist or the like. This type of conventional clip is provided with a slot comprising a first portion through which the head of the stud will pass, a second portion through which the head of the stud will not pass and a passage joining the first and second portions. In order to place the clip on the stud the first portion of the slot is aligned with the head of the stud and moved relative to the stud until the shaft of the stud is disposed in the second portion of the slot. The second portion of the slot may receive the shaft of the stud as a friction fit to discourage unintentional movement of the clip from a working position in which the shaft of the stud is disposed in the second slot portion to a disengageable position in which the shaft of the stud is disposed in the first slot position.
However, often these clips become unintentionally disengaged for example through movement of the patient received in the harness. On solution to this is to provide a narrowed portion at the entrance to the second portion of the slot which requires a * ** degree of force to push the shaft of the stud past. Thus, additional force is required to move the shaft of the stud Out of the second portion and the movement of a *..
* patient received within the harness is less likely to cause unintentional disengagement of the clip from the hoist. * **
However, these narrowed portions wear away over time and because this is a gradual process, the wear often goes unnoticed until eventually the shaft of the stud may be simply removed from the second portion without use of additional force as the narrowed portion has worn away to such an extent that there is no additional resistance experienced when moving the clip from the second position to the first position to disengage the clip from the stud.
There have been several instances where such wear and tear has occurred unnoticed and the clip has become unintentionally disengaged from the hoist, resulting in severe injury and, in some instances, the death of the patient.
There is therefore a need for a clip for a patient harness which is cannot be unintentionally disengaged during use.
iinimary of the Invention The present invention seeks to address the problems of the prior art.
Accordingly, a first aspect of the present invention provides a clip for a patient hoist, the clip comprising a body defining a stud insertion aperture adapted for receiving the head of a stud thercthrough, a stud retention aperture adapted to retain at least a portion of a stud therein, and a non-linear channel connecting the stud insertion aperture and stud retention apertures with one another, such that in use the clip is rotatable between a first orientation where the stud may be passed through the stud insertion aperture and a second orientation where the stud is located within the stud retention aperture. *I..
Such an arrangement ensures that once the stud is located within the stud retention aperture, the clip cannot be unintentionally disengaged from the stud as the clip would need to be moved so as to guide the stud along the non-linear channel in order to reach the stud insertion portion where the stud head can be passed through the aperture and the stud removed from the clip. This is not possible simply by a patient shifting in the harness causing intermittent vertical movement of the clip relative to the stud.
In one embodiment, the stud insertion aperture is dimensioned such that it is at least the width of the head of a stud to be received therein in a first axis and less than the width of the head of a stud to be received therethrough in a second axis transverse to the first axis, such that the head of the stud may be received through the stud insertion aperture only by rotation of the clip relative to the stud about the longitudinal axis through the widest part of the stud insertion aperture.
In this way, the insertion and retention of the stud within the clip can be carefully controlled, with the stud having only one point of access to the channel, i.e. via the stud insertion aperture, and a distal stud retention aperture connected to the stud insertion aperture in a non-linear fashion.
In a further embodiment, the width of the non-linear channel is wider than the wide of the neck of a stud to be received therethrough and narrower than the width of the head of the stud to be received therethrough.
This ensures that the stud is retained within the channel of the clip as the channel is not of a sufficient dimension to allow passage of the head of the stud therethrough.
*.:. 20 The non-linear channel is preferably a substantially L-shaped channel. However, it will be appreciated that any suitable shape of channel may be employed provided * that the channel is non-linear and that rotation of the clip relative to the stud to :.:. insert a stud into and remove a stud from the clip is not prevented due to *..
* obstruction from the arm of the hoist.
*. * 25 * * S * * In one embodiment, the non-linear channel defines a portion of restricted width located adjacent the stud retention aperture, the restricted width corresponding to the width of the neck of a stud received within the channel. Preferably, the portion of restricted width is dimensioned such that it is a close frictional fit with the shaft of the stud. Thus, the application of force is required to push the clip relative to the stud such that the stud is moved from the channel into the stud retention portion, movement of the stud back into the channel again being prevented by the restricted width portion unless there is sufficient application of force to the clip to overcome the close frictional fit.
The stud retention portion may be dimensioned so as to be able to receive the neck of a stud therein but to prevent the passage of the head of the stud therethrough.
The clip may comprise a non-metal material. For example, the clip may comprise * 10 any suitable plastics material of sufficient strength and durability for the purpose.
The clip may further comprise at least one harness location portion for securing a conventional patient support harness to the clip.
The or each harness locating portion may comprise an aperture defined by the body.
A further aspect of the present invention provides a harness for supporting a patient, the harness comprising a clip in accordance with a first aspect of the present invention. u S * S S...
Brief Description of the Drawings
: An embodiment of the invention will now be described, by way of example only, *.* . . . * and with reference to the accompanying drawings, in which: *. * 25 :.: Figure lisa side view of a conventional stud connected with a portion of a 5.
conventional arm of a patient hoist; Figure 2 is a front view of a hoist clip in accordance with a first embodiment of the present invention shown in the vertical working orientation; and I. Figure 3 is a front view of the hoist clip of figure 1 shown in the stud insertion orientation;
Piailed Description of the Invention
Figure 1 shows a conventional hoist arm 10 and connected stud 20 arrangement in which the stud 20 is either integral with the arm 10 or, more typically, is welded or otherwise fastened in place relative to the arm 10.
Stud 20 comprises a head 30 and connected shaft 40 connected to arm 10 by means of connecting portion 45 which, as mentioned above, may comprises a weld or other suitable connecting means.
Figure 2 is a front view of a hoist clip 50 in accordance with a first aspect of the present invention.
Hoist clip 50 comprises a body 60 defining a stud insertion aperture 80, stud retaining aperture 90 and channel 100 connecting the one with the other.
Clip 50 is further provided with harness receiving portions in the form of apertures *:::* 20 70 into which a portion of the harness (not shown) is secured, for example by being stitched in place or by any other suitable conventional method or means known to the skilled person.
I' Stud insertion aperture 80 Comprises an aperture wherein the width of the aperture 80 in the direction of axis A in figure 2 (axis B in figure 3) is greater than the width of the aperture in the transverse direction and the width in the direction of axis A is at least equal to the diameter of the head of stud 20. * ,1
Stud retention aperture 90 is dimensioned to have a diameter of less than the diameter of the head of stud 20 but greater than the diameter of shaft 40 of stud 20 such that the shaft 40 of stud 20 is able to pass into stud retention aperture 90.
Channel 100 is located between stud insertion aperture 80 and stud retention aperture 90 and is dimensioned such that the width of channel 100 is less than the diameter of head 30 of stud 20 and greater than the width of shaft 40 of stud 20.
Channel 20 narrows in width towards stud retention portion 90 such that movement of clip 50 relative to stud 20 to move the shaft 40 of stud 20 into stud retention portion 90 require the application of force to overcome frictional resistance at the narrowed portion of channel 100. Once sufficient force has been applied to push shaft 40 of stud 50 into stud retention aperture 90, shaft 40 of stud 20 is able to freely rotate within stud retention aperture 90 of clip 50 due to the larger diameter of stud retention aperture 90 relative to the narrowed portion of channel 100.
Hoist clip 50 in figure 2 is shown in a vertical working position in which the stud insertion aperture 80 is located vertically above the stud retaining aperture 90 and channel 100, and hoist clip 50 in figure 3 is shown in a horizontal stud insertion position in which the stud insertion aperture 80 and stud retention aperture 90 are *:*::* 20 located coaxially with horizontal axis B. S... * S * *.*
* In use, clip 50 is oriented as shown in figure 3 and stud insertion aperture 80 is :.: placed adjacent the edge of the head 30 of stud 20. The edge of the head 30 of stud is then pushed at least partially into stud insertion aperture 80 and then clip 50 is rotated relative to the head 30 of stud 20 about an axis running transverse to the * longitudinal axis through the shaft 40 of stud 20 i.e. axis B shown in figure 3, until S..
the whole of the head 30 of stud 20 has passed through stud insertion aperture 80.
Once the head 30 of stud 20 has passed through stud insertion aperture 80 and clip 50 returned to an orientation wherein the plane of body 60 of clip 50 is substantially parallel to the plane of the surface of head 30 of stud 20, the head of stud 20 is located on one side of stud 20, the hoist arm 10 is located on the opposing side of stud 20 and shaft 40 of stud 20 is located at least in part within the stud insertion aperture 80.
Clip 50 is then moved relative to stud 20 so as to move the shaft 40 of stud 20 along channel 100 of clip 50. As shaft 49 of stud 20 is moved along channel 100, force is required to move clip 50 relative to stud 20 so as to move shaft 40 of stud into stud retention aperture 90, as detailed above.
Once within stud retention aperture 90, clip 50 can only be moved relative to clip to return shaft 40 of clip 20 to channel 100 by applying force to clip 50 to move shaft 40 of clip 20 past the narrowed portion of channel 100 located adjacent stud retention portion 90.
Clip 50 is then rotated such that stud insertion aperture 80 and stud retention aperture 90 are no longer aligned vertically i.e. no longer aligned along axis A, but instead are located along axis B (shown in figure 3). Once in this orientation, the widest dimension of stud insertion aperture 80 is located relative to the head 40 of stud 20 such that rotation of clip 50 about axis B results in head 40 of stud 20 is passed back through stud insertion aperture 80 and clip 50 is removed from stud 20. * S. * . . * S
When clip 50 is in the working configuration as shown in figure 2 with shaft 40 of : 25 stud 20 located in stud retention aperture 80, any movement or shifting of the * weight of a patient received within the harness (not shown) will not result in *S.
* accidental removal of clip 50 from stud 20 due to the force required to move stud from stud retention aperture 90 due to the narrowed portion of channel 100. 41*
Over time, should the narrowed portion wear and become wider such that no significant force is required to accidentally move the stud 20 and stud retention portion 80 of clip 50 out of engagement with one another such that stud shaft 40 moves into channel 100, the clip will still not be accidentally disengaged from stud 20 of hoist arm 10 as the clip 50 cannot be removed from stud 20 without rotation of clip 50 relative to stud 20 to allow head 30 of stud 20 to pass through stud insertion aperture 80 due to the asymmetric nature of the aperture of stud insertion aperture 80.
This rotation cannot be achieved whilst a patient is located within the harness as the force applied to the clip 50 is a downward force relating to the weight of the patient and harness being support on the hoist arm 10 by means of clip 50. In order to rotate clip 50 relative to shaft 40 of stud 20 sufficiently to allow the passage of stud head 30 through stud insertion aperture 80 i.e. about around 90 , the weight of the patient would need to be removed from clip 50. Thus, even if the narrowed portion of channel 100 became worn, there is no danger of accidently disengagement of the clip 50 from stud 20 and therefore there is no risk to the safety of a patient supported in a harness suspended on the hoist arm 10 of a patient hoist due to unintentional disengagement of clip 50 from stud 20. * ** * * * * **
Although aspects of the Invention have been described with reference to the **** embodiment shown in the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiment shown and that various changes and modifications may be effected without further inventive skill and effort. For * 25 example, although the clip is in figures 2 and 3 is shown as being rotated about 90 between stud insertion orientation (figure 3) and working orientation (figure 2), it *** will be appreciated that the angle of rotation may vary in dependence upon the precise application of the clip and the design of the hoist arm itself.

Claims (12)

1. A clip for a patient hoist, the clip comprising: a body defining a) a stud insertion aperture adapted for receiving the head of a stud therethrough; b) a stud retention aperture adapted to retain at least a portion of a stud therein; and c) a non-linear channel connecting the stud insertion aperture and stud retention apertures with one another, such that in use the clip is rotatable between a first orientation where the stud may be passed through the stud insertion aperture and a second orientation where the stud is located within the stud retention aperture.
2. A clip according to Claim 1, wherein the stud insertion aperture is dimensioned such that it is at least the width of the head of a stud to be received therein in a first axis and less than the width of the head of a stud *:*::* 20 to be received therethrough in a second axis transverse to the first axis, such that the head of the stud may be received through the stud insertion aperture S...
only by rotation of the clip relative to the stud about the longitudinal axis through the widest part of the stud insertion aperture. S..
S
3. A clip according to Claim 1 or Claim 2, wherein the width of the non-linear channel is wider than the wide of the neck of a stud to be received S..
therethrough and narrower than the width of the head of the stud to be received therethrough. me
4. A clip according to any preceding Claim, wherein the non-linear channel is a substantially L-shaped channel.
5. A clip according to any preceding Claim, wherein the non-linear channel defines a portion of restricted width located adjacent the stud retention aperture, the restricted width corresponding to the width of the neck of a stud received within the channel.
6. A clip according to any preceding Claim, wherein the stud retention portion is dimensioned so as to be able to receive the neck of as stud therein but to prevent the passage of the head of the stud therethrough.
7. A clip according to any preceding Claim, wherein the clip comprises a non-metal material.
8. A clip according to any preceding Claim, further comprising at least one harness location portion.
9. A clip according to Claim 8, wherein the or each harness locating portion *:*::* 20 comprises an aperture defined by the body. * * **.*
*
10. A harness for supporting a patient, the harness comprising a clip according to any one of Claims ito 10. ***
*:*. 25
11. A clip substantially as hereinbefore described and with reference to the * accompanying figures. **S
S
12. A harness substantially as hereinbefore described and with reference to the accompanying figures.
GB0708011.2A 2007-04-25 2007-04-25 Hoist clip Expired - Fee Related GB2448727B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0708011.2A GB2448727B (en) 2007-04-25 2007-04-25 Hoist clip
PCT/GB2008/001479 WO2008132472A1 (en) 2007-04-25 2008-04-25 Hoist clip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0708011.2A GB2448727B (en) 2007-04-25 2007-04-25 Hoist clip

Publications (3)

Publication Number Publication Date
GB0708011D0 GB0708011D0 (en) 2007-06-06
GB2448727A true GB2448727A (en) 2008-10-29
GB2448727B GB2448727B (en) 2012-01-25

Family

ID=38170668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0708011.2A Expired - Fee Related GB2448727B (en) 2007-04-25 2007-04-25 Hoist clip

Country Status (2)

Country Link
GB (1) GB2448727B (en)
WO (1) WO2008132472A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2972552C (en) * 2014-12-30 2023-03-14 Arjohuntleigh Magog Inc. Locking clip for patient sling

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB366391A (en) * 1931-05-18 1932-02-04 Hermann Hollenbach Buckle especially for fastening shoes
GB1295396A (en) * 1970-05-06 1972-11-08
GB1388950A (en) * 1971-01-22 1975-03-26
JP2001248613A (en) * 2000-03-03 2001-09-14 Tennex Corp Clip device
GB2402920A (en) * 2003-06-21 2004-12-22 Arjo Med Aktiebolag Ltd Sling attachment device
GB2419152A (en) * 2004-10-14 2006-04-19 Sunrise Medical Ltd Attachment device which attaches lifting sling to hoist

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734601C2 (en) * 1997-08-09 1999-10-07 Reiss Int Gmbh Fastening device
GB2378171B (en) * 2001-06-29 2004-04-14 Arjo Ltd Invalid hoist
GB0205899D0 (en) * 2002-03-13 2002-04-24 Huntleigh Technology Plc Hoist

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB366391A (en) * 1931-05-18 1932-02-04 Hermann Hollenbach Buckle especially for fastening shoes
GB1295396A (en) * 1970-05-06 1972-11-08
GB1388950A (en) * 1971-01-22 1975-03-26
JP2001248613A (en) * 2000-03-03 2001-09-14 Tennex Corp Clip device
GB2402920A (en) * 2003-06-21 2004-12-22 Arjo Med Aktiebolag Ltd Sling attachment device
GB2419152A (en) * 2004-10-14 2006-04-19 Sunrise Medical Ltd Attachment device which attaches lifting sling to hoist

Also Published As

Publication number Publication date
WO2008132472A1 (en) 2008-11-06
GB2448727B (en) 2012-01-25
GB0708011D0 (en) 2007-06-06

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Free format text: REGISTERED BETWEEN 20130207 AND 20130214

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190425