Devices for assisting defecation in a subject suffering from perineal descensus

Abstract

Provided is a foldable device (100) for assisting defecation in a subject suffering from perineal descensus comprising: a longitudinal handle (20), a longitudinal transmission member (40), a revolute joint (80) connecting the longitudinal handle (20) to the transmission member (40); and a pressure applicating region (60) that is formed as a pressure applicating member (62) configured for contact with / application of pressure to the perineum of the subject or configured for demountable attachment of a pressure applicating member (62) configured for contact with / application of pressure to the perineum of the subject; wherein: the device (100) has an operational configuration and a storage configuration, and is switchable between the operational configuration and the storage configuration by a rotation of the longitudinal handle (20) around the revolute joint (80) relative to the longitudinal transmission member (40), and / or vice versa; a part of the transmission member (40) comprises a rolling region (46) configured for rolling contact with a sitting surface (530) of a toilet bowl (500); and in the operational configuration, the device (100) is configured to: roll along the rolling region (46) responsive to an actuating force applied to handle (20) by the subject; and transform at least a part of the actuating force applied to handle (20), to a movement of the pressure applicating region (60) in a net superior (S) direction.

Description

[0001] DEVICES FOR ASSISTING DEFECATION IN A SUBJECT SUFFERING FROM PERINEAL DESCENSUS

[0002] Field of the invention

[0003] The present disclosure lies in a field of devices for assisting defecation in a subject suffering from perineal descensus.

[0004] Background to the invention

[0005] Descensus perineum syndrome, or sagging of the perineum, is a condition that affects many women during bowel movements, resulting in discomfort such as constipation and pain. A problem experienced by suffers is using public facilities or facilities while away from home. Defecation can be assisted by application of pressure to the perineal descensus. However, such devices are typically not available in public facilities. Because defecation is delayed or hindered, the subject can experience discomfort and / or complications caused by incomplete or delayed defecation. The present invention aims to solve this problem among others.

[0006] Summary of the invention

[0007] Provided herein is a foldable device (100) for assisting defecation in a subject suffering from perineal descensus comprising:

[0008] - a longitudinal handle (20);

[0009] - a longitudinal transmission member (40);

[0010] - a revolute joint (80) connecting the longitudinal handle (20) to the transmission member (40); and

[0011] - a pressure applicating region (60):

[0012] - formed as a pressure applicating member (62) configured for contact with / application of pressure to the perineum of the subject; or

[0013] - configured for demountable attachment of a pressure applicating member (62) configured for contact with / application of pressure to the perineum of the subject; wherein:

[0014] - the device (100) has an operational configuration and a storage configuration, and is switchable between the operational configuration and the storage configuration by a rotation of the longitudinal handle (20) around the revolute joint (80) relative to the longitudinal transmission member (40), and / or vice versa, - a part of the transmission member (40) comprises a rolling region (46) configured for rolling contact with a sitting surface (530) of a toilet bowl (500); and

[0015] - in the operational configuration, the device (100) is configured to:

[0016] - roll along the rolling region (46) responsive to an actuating force applied to handle (20) by the subject; and

[0017] - transform at least a part of the actuating force applied to handle (20), to a movement of the pressure applicating region (60) in a net superior (S) direction;

[0018] Preferably, in the storage configuration the foldable device (100) is folded closed around the revolute joint (80).

[0019] Preferably, a length of the transmission member (12) and a length of the longitudinal handle (20) are equal or no more than 20% different.

[0020] Preferably, the device is configured such that in the storage configuration, the foldable device (100) is folded around the revolute joint (80).

[0021] Preferably:

[0022] - in the storage configuration, a projection angle (epsilon) is a value equal to or less than 45 degrees, preferably a value equal to or less than 10 deg, and

[0023] - in the operational configuration, the projection angle (epsilon) is a value greater than 90 deg and equal to or less than 150 deg, wherein

[0024] - the projection angle (epsilon) is an angle between a first straight line (InKp) and a second straight line (LnJp) on a projection (102) of foldable device (100) onto a projection plane that is a plane perpendicular to the axis of rotation of the revolute joint (80),

[0025] - the first straight line (InKp) is between a center of rotation (aa) of the revolute joint (80) and a (distal (12)) terminal end (ff) of the transmission member (40) of the foldable device (100) on the projection (102),

[0026] - the second straight line (LnJp) is between the same center of rotation (aa) of the revolute joint (80) and a terminal end (ee) of the handle (20) of the foldable device (100) on the projection (102). Preferably, a lever angle (gamma) is the angle adopted between a first straight line (In1) and a second straight line (I2) on a medial cross section of the foldable device (100) in the operational configuration wherein:

[0027] - the first straight line (In 1 ) is between a superior terminal end (bb) an apex or mid point of the pressure applicating member (62), and an inferior (I) most point (pp) of the rolling region (46) in a medial cross section of the foldable device in the operational configuration;

[0028] - the second straight line (In2) is between the same inferior (I) most point (pp) of the rolling region (46) and a point (qq) that is a point on the handle (20) posterior side (25) where a force vector is applied operation of the devicein the same medial cross section of the foldable device (100) in the operational configuration; and

[0029] - the lever angle (gamma) is a value in a range equal to or greater than 90 deg and equal to or less than 150 deg, preferably in a range equal to or greater than 90 deg and equal to or less than 120 deg.

[0030] Preferably, the device is configured such that the angle between the straight line (In 1 ) and a straight line (Ln2) cannot exceed the lever angle (gamma).

[0031] Preferably:

[0032] - the rolling contact is in a longitudinal direction of the transmission member (40); and

[0033] - the rolling region (46) is a curved part of the transmission member (40) disposed on an inferior (I) side and at a proximal end of the transmission member (40).

[0034] Preferably the longitudinal handle (20) is configured such that, in the storage configuration the pressure applicating region (60) is covered by the longitudinal handle (20).

[0035] Preferably, a transmission superior side (42) of the transmission member (40), and posterior side (25) the handle (20) have complementary shapes, and the device (100) is configured such that the complementary shapes nest in the storage configuration.

[0036] Preferably, a superior side (42) of the longitudinal transmission member (40) comprises a concave region (48) that is concave in an inferior (I) direction, wherein the concave region (48) is configured for accommodating obstructive external tissue structures of the subject during movement of the pressure applicating region (60) in the net superior (S) direction.

[0037] Preferably, the handle (20) comprises a rounded bend (22) separating the handle (20) into an upper handle portion (24) and a lower handle (portion) (26), and the upper handle portion (24) comprises a force-receiving region (23), configured to receive a pushing force applied by one or both of the hands of the subject.

[0038] Preferably, the rolling region (46) is covered at least partially with a non-slip substance.

[0039] Preferably, the longitudinal transmission member (40) has a transmission span distance (d1) that is a straight line (InC) distance between an axis of rotation (aa) of the revolute joint (80) and a superior terminal end (bb) of the pressure applicating member (62) on a medial cross-section of the foldable device (100), and the transmission span distance (d1) is between 210 and 280 mm.

[0040] Preferably, the longitudinal transmission member (40) has a transmission span distance (d1) that is a straight line (InC) distance between an axis of rotation (aa) of the revolute joint (80) and a superior terminal end bb) of the pressure applicating member (62) on a medial cross-section of the foldable device (100), and the transmission span distance (d1) is between 210 and 310 mm.

[0041] Preferably, the revolute joint comprises a ratchet mechanism, configured to releasably lock the revolute joint at one or more angles, including at a storage angle that is an angle adopted by the revolute joint in the storage configuration, and / or at an operational angle that is an angle adopted by the revolute joint in the operational configuration.

[0042] Preferably, the revolute joint comprises a click-stop mechanism, configured to hold the revolute joint at a pre-selected angle when applied rotational force is below a threshold, wherein the pre-selected angle is a storage angle that is an angle adopted by the revolute joint in the storage configuration, and / or is an operational angle that is an angle adopted by the revolute joint in the operational configuration.

[0043] Preferably, the revolute joint comprises a spring-opening mechanism, biased in the operational configuration, and configured to maintained the storage configuration using an actuatable catch that stops the revolute joint from returning to the biased operational configuration.

[0044] Preferably, the pressure applicating member (62) comprises a domed surface or annular shape.

[0045] Figure Legends

[0046] FIG. 1 shows a medial-cross-section of an exemplary foldable device in an operational configuration.

[0047] FIG. 1A (inset) shows a configuration of an exemplary pressure applicating region having a detachable pressure applicating member.

[0048] FIG. 1B (inset) shows a configuration of an exemplary pressure applicating region formed into a pressure applicating member.

[0049] FIG. 2 shows the foldable device of FIG. 1 in a first position (solid line) and a second pivoted position (dotted line).

[0050] FIG. 3 shows a medial-cross-section of the foldable device of FIG. 1 in a storage configuration.

[0051] FIG. 4 shows the foldable device of FIG. 1 , with more elements indicated.

[0052] FIG. 5 shows a medial-cross-section of an alternative exemplary foldable device in an operational configuration.

[0053] FIG. 6 shows the foldable device of FIG. 5 in a storage configuration.

[0054] FIG. 7 shows the foldable device of FIG. 5, with more elements indicated.

[0055] FIG. 8 shows a medial-cross-section of an alternative exemplary foldable device in an operational configuration.

[0056] FIG. 9 shows the foldable device of FIG. 8 in a storage configuration.

[0057] FIG. 10 shows a plan view of a toilet bowel, without (A), or with (B) toilet seat.

[0058] FIG. 11 shows a side view of a subject seated on a toilet bowel, together with a foldable device pivoted on the sitting surface.

[0059] FIG. 12 shows a projection (102) of the foldable device of FIG. 7 onto a projection plane perpendicular to the axis of rotation of the revolute joint.

[0060] FIG. 13A shows a projection (102) of the foldable device (100) of FIG. 8 onto a projection plane perpendicular to the axis of rotation of the revolute joint in an operational configuration FIG. 13B shows a projection (102) of the foldable device (100) of FIG. 8 onto a projection plane perpendicular to the axis of rotation of the revolute joint moving towards a storage configuration.

[0061] FIG. 14 shows a medial-cross-section of the foldable device as described here in a storage configuration, wherein the pressure applicating region is covered by the longitudinal handle.

[0062] FIG. 15 shows a medial-cross-section of the foldable device as described here in a storage configuration, wherein the pressure applicating member is covered by the longitudinal handle.

[0063] Detailed description of invention

[0064] Before the present system and method of the invention are described, it is to be understood that this invention is not limited to particular systems and methods or combinations described, since such systems and methods and combinations may, of course, vary. It is also to be understood that the terminology used herein is not intended to be limiting, since the scope of the present invention will be limited only by the appended claims.

[0065] As used herein, the singular forms "a", "an", and "the" include both singular and plural referents unless the context clearly dictates otherwise.

[0066] The terms "comprising", "comprises" and "comprised of" as used herein are synonymous with "including", "includes" or "containing", "contains", and are inclusive or open-ended and do not exclude additional, non-recited members, elements or method steps. It will be appreciated that the terms "comprising", "comprises" and "comprised of" as used herein comprise the terms "consisting of', "consists" and "consists of".

[0067] The recitation of numerical ranges by endpoints includes all numbers and fractions subsumed within the respective ranges, as well as the recited endpoints.

[0068] The term "about" or “approximately” as used herein when referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of + / -10% or less, preferably + / -5% or less, more preferably + / -1 % or less, and still more preferably + / -0.1 % or less of and from the specified value, insofar such variations are appropriate to perform in the disclosed invention. It is to be understood that the value to which the modifier "about" or “approximately” refers is itself also specifically, and preferably, disclosed.

[0069] Whereas the terms “one or more” or “at least one”, such as one or more or at least one member(s) of a group of members, is clear per se, by means of further exemplification, the term encompasses inter alia a reference to any one of said members, or to any two or more of said members, such as, e.g., any >3, >4, >5, >6 or >7 etc. of said members, and up to all said members.

[0070] All references cited in the present specification are hereby incorporated by reference in their entirety. In particular, the teachings of all references herein specifically referred to are incorporated by reference.

[0071] Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included to better appreciate the teaching of the present invention.

[0072] In the following passages, different aspects of the invention are defined in more detail. Each aspect so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature indicated as being preferred or advantageous may be combined with any other feature or features indicated as being preferred or advantageous.

[0073] Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to a person skilled in the art from this disclosure, in one or more embodiments. Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and form different embodiments, as would be understood by those in the art. For example, in the appended claims, any of the claimed embodiments can be used in any combination.

[0074] In the present description of the invention, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration only of specific embodiments in which the invention may be practiced. Parenthesized or emboldened reference numerals affixed to respective elements merely exemplify the elements by way of example, with which it is not intended to limit the respective elements. Unless otherwise indicated, all figures and drawings in this document are not to scale and are chosen for the purpose of illustrating different embodiments of the invention. In particular the dimensions of the various components are depicted in illustrative terms only, and no relationship between the dimensions of the various components should be inferred from the drawings, unless so indicated.

[0075] It is to be understood that other embodiments may be utilised and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0076] According to a first aspect, provided herein is a foldable device (100) for assisting defecation in a subject suffering from perineal descensus.

[0077] The terms "distal" and "proximal" are used through the specification to refer to a direction of the foldable device and components thereof, and are terms generally understood in the field. "Proximal" means towards a hand of subject operating the foldable device, and thus away from the pressure applicating region. "Distal" means towards the pressure applicating region and thus away from the hand of subject.

[0078] Individual components of the foldable device each also have a “distal" and "proximal" direction. For instance, “proximal” with respect to the longitudinal handle means towards the grasping hand of subject; “distal” with respect to the longitudinal handle means towards revolute joint. For instance, “proximal” with respect to the longitudinal transmission member means towards revolute joint; “distal” with respect to the longitudinal transmission member means towards pressure applicating region. In the above description herein a proximal end and distal end of the device is defined in the operational configuration. In the storage configuration, the proximal end and distal end of the device appropriates the proximal end and distal end of the transmission member only. For example, in the figures, a proximal end of the device (100) is denoted (10) in both the operational configuration. In the figures, a distal end of the device (100) is denoted (12) in both the operational configuration. In the storage configuration.

[0079] In the description herein a proximal end of a component (e.g. longitudinal transmission member (40), longitudinal handle (20)) is defined in the operational configuration, and maintains the same labels in the storage configuration. In the description herein a distal end of a component is defined in the operational configuration, and maintains the same labels in the storage configuration. For example, FIG. 15 show the device (100) in a storge configuration, and the longitudinal handle (20) retains the same proximal end (10) and same distal end (12) as in the operational configuration.

[0080] The “subject” refers to a person receiving a treatment from the foldable device. The subject self-operates the foldable device using one or more of their hands.

[0081] The frontal plane or coronal plane are terms known in the art and it divides the body into dorsal and ventral (back and front, or posterior and anterior) portions. The median plane is a term known in the art and it divides the body into left and right portions. The horizontal axial plane or medial plane is a term known in the art and it divides the body into superior and inferior sections. Directions used to describe the human body in terms of the aforementioned reference planes may be used to describe the present foldable device when disposed in an orientation adopted during operation. The directions of the foldable device are independent of the presence of the human body.

[0082] When the foldable device in an operational configuration is aligned with respect the median plane and horizontal axial plane, such that:

[0083] - both the longitudinal handle (20) and the longitudinal transmission member (40) contact the medial plane, and

[0084] - the transmission member is aligned along the horizontal axial plane, the foldable device may be described as having anterior (A), posterior (P), lateral (L), superior / cranial (S), inferior / caudal (I) sides or directions. The medial direction is a term known in the art, and means toward the midline of the body.

[0085] The anterior (A) direction is a term known in the art, and refers to a front (face) direction of the subject. It refers to a forward direction of the foldable device i.e. towards the handle (20) during operation. More in particular, it refers to a longitudinal direction of the foldable device along the transmission member (40) towards the handle (20) when in the operational configuration. In the folded configuration, anterior (A) refers to a longitudinal direction of the folded foldable device towards the revolute joint (80); in particular, it refers to a longitudinal direction of the folded foldable device along the transmission member (40) towards the revolute joint (80). The posterior (P) direction is a term known in the art, and refers to a rear direction of the subject. It refers to a rearward direction of the foldable device i.e. towards the pressure applicating region (60) during operation. More in particular, it refers to a direction of the foldable device along the transmission member towards the pressure applicating region when in the operational configuration. In the folded configuration, posterior (P) refers to a longitudinal direction of the folded foldable device towards the pressure applicating region (60); in particular, it refers to a longitudinal direction of the folded foldable device along the transmission member (40) towards the pressure applicating region (60).

[0086] The lateral (L) direction is a term known in the art, and refers to a sideways (left to right, or vice versa) direction of the subject.

[0087] The superior (S) or cranial direction is a term known in the art, and refers to an upward (towards the head) direction of the subject. It refers to a upward direction of the foldable device i.e. where an apex of the pressure applicating region (60) points during operation. In the folded configuration, superior (S) refers to an upward direction of the folded foldable device i.e. where an apex of the pressure applicating region (60) points upwards.

[0088] The inferior (I) or caudal direction is a term known in the art, and refers to a downward (towards the feet) direction of the subject. It refers to a downward direction of the foldable device i.e. on an opposite side to where an apex of the pressure applicating region (60) points during operation. In the folded configuration, inferior (I) refers to a downward direction of the folded foldable device i.e. on an opposite side to where an apex of the pressure applicating region (60) upwards.

[0089] A median cross-section of the foldable device is a cross-section through the median plane (which divides the foldable device into left and right portions). FIGs. 1, 4, 5, 7, 8 and 11 show directional labelling used herein superior (S), inferior (I), posterior (P), anterior (A), Lateral left-right (Li, Lr) applied to the foldable device (operational configuration) aligned with respect the median plane (MedP) and horizontal axial plane as described above. FIGs. 3, 6, 9, 14, and 15 show directional labelling used herein superior (S), inferior (I), posterior (P), anterior (A), Lateral left-right (Li, Lr) applied to the foldable device (storage configuration) aligned with respect the median plane (MedP) and horizontal axial plane as described above.

[0090] Provided is a foldable device (100) for assisting defecation in a subject suffering from perineal descensus. Exemplary foldable devices are shown in FIGs. 1 to 9 and 12 to 15.

[0091] The foldable device (100) comprises a longitudinal handle (20), a longitudinal transmission member (40), and a revolute joint (80) connecting the longitudinal handle (20) to the transmission member (40). The longitudinal transmission member (40) comprises a pressure applicating region (60) configured for:

[0092] - contact with / application of pressure to the perineum, or

[0093] - attachment of a pressure applicating member configured for contact with / application of pressure to the perineum.

[0094] The foldable device has an operational configuration and a storage configuration.

[0095] The device can transition between the operational configuration and a storage configuration by a rotation of the longitudinal handle (20) around the revolute joint relative to the longitudinal transmission member (40), and / or vice versa.

[0096] A part of the transmission member (40) comprises a rolling region (46) configured for rolling contact with a sitting surface (530) of a toilet bowl (500).

[0097] In the operational configuration, the foldable device (100) is configured to roll along the rolling region (46) responsive to an actuating force applied to handle (20). In particular, it is configured to contact the sitting surface (530) of a toilet bowl (500) and roll along the rolling region (46) responsive to an actuating force applied to handle (20).

[0098] Further, in the operational configuration, the foldable device (100) is configured to transform at least a part of the actuating force applied to the handle (20) (by pivoting of the rolling region on the sitting surface of a toilet bowl), to a movement of the pressure applicating region (60) in a (net) superior (S) direction (see FIG. 2).

[0099] The storage configuration allows subject to carry the foldable device discretely. When using public facilities or facilities while away from home, for instance, defecation is assisted by application of pressure by the foldable device to the perineum. Because defecation is not delayed nor hindered the subject can avoid discomfort and / or complications caused by incomplete or delayed defecation.

[0100] The longitudinal handle (20), also known as handle (20) herein is configured for receiving force by the subject, in particular an actuating (pushing force). Preferably, it is configured for application of a grip by the subject, allowing the handle to be grasped by the subject and pushed in a posterior to anterior direction.

[0101] The handle (20) is rigid. In other words it maintains its shape under forces required to receive force from the subject and convey it to the transmission member (40) to apply pressure to the perineum of the subject.

[0102] The handle (20) has a handle anterior side (29) facing an anterior (A) direction, and an opposing handle posterior side (25) facing an posterior (P) direction. The handle (20) has an inferior (I) end or distal end (12) towards the revolute joint, and an opposing superior (S) end or proximal end (10). The handle posterior side (25) faces the transmission member (40) in the operational configuration. The longitudinal handle (20) superior (S) end or proximal end (10) is towards the hand of the subject and away from the revolute joint (80), and the distal end (12) I posterior (P) end away from the hand of subject and towards the revolute joint (80) in the operational configuration.

[0103] The handle (20) is disposed with a force-receive region (23), configured to receive a pushing force (posterior to anterior direction) applied by one or both of the hands of the subject. The force-receiving region (23) is disposed towards a superior (S) end or proximal end (10) portion of the handle (20).

[0104] The handle (20) may comprise a (rounded) bend (22) separating the handle (20) into an upper handle (portion) (24) and a lower handle (portion) (26). The upper handle (portion) (24) comprises the force-receiving region (23). The bend (22) may place the upper handle (portion) (24) at a delta angle (8) (see FIG. 7) in the operational configuration, wherein the angle delta (8) is an angle between a first straight line (28) that contacts (and is parallel to) a handle first longitudinal side (25) of the upper handle (24) on a medial cross-section of the foldable device (100), and a straight line (LnC) that contacts both a centre of rotation (aa) of the revolute joint (80) and a (superior) terminal end (bb) (apex or mid point of) of the pressure applicating member (62) on the same medial cross-section of the foldable device (100). The centre of rotation (aa) is a single point on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in a lateral (Lj-Lr) direction. The centre of rotation (aa) is at a single point at an interface between the handle and transmission member on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in an inferiosuperior (l-S) direction. Angle delta (8) is preferably greater than 90 deg, preferably 110 to 140 deg.

[0105] Angle delta (8) is greater than 90 deg, meaning that actuating force received by the upper handle (portion) (24) has a downward vector, that induces a downward force onto the rolling region (46) and onto the sitting surface of a toilet bowl that increases stability of the foldable device (100) on the sitting surface during the application of the force.

[0106] The lower handle (portion) (26) (configured for gripping by a hand of the subject) allows gripping by the subject to increase stability during application of actuating force by the other hand to the upper handle (portion) (24) or force-receiving region (23). The gripping reduces slippage caused by any lateral forces. The option to facilitate a two handed operation increases ease and builds confidence of use by the subject who later has an option for one-handed operation.

[0107] The longitudinal transmission member (40), also known as transmission member (40) herein, is configured for transmission of force to the pressure applicating region (60) or pressure a pressure applicating member (62). In particular, it is configured to move the pressure applicating region (60) or a pressure applicating member (62) in a superior direction for application of pressure to the perineum of the subject.

[0108] The transmission member (40) is rigid. In other words it maintains its shape under forces required to apply pressure to the perineum of the subject. The transmission member (40) has a transmission superior side (42) facing a superior (S) direction, and an opposing transmission inferior side (42) facing an inferior (I) direction. The transmission member (40) has an anterior (A) end or proximal end (10) towards the revolute joint, and an opposing posterior (P) end or distal end (12) towards the pressure applicating region (60) or a pressure applicating member (62). The transmission superior side (42) faces the handle (20) in the operational and storage configuration.

[0109] The longitudinal transmission member (40) has a transmission span distance (d1). The transmission span distance (d1) is a straight line (30) distance between a centre of rotation (aa) of the revolute joint (80) and a (superior) terminal end (bb) (apex or mid point of) of the pressure applicating member (62) on a medial cross-section of the foldable device (100). The centre of rotation (aa) is a single point on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in a lateral (Lj- Lr) direction. The centre of rotation (aa) is at a single point at an interface between the handle and transmission member on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in an inferiosuperior (l-S) direction.

[0110] The transmission span distance (d1) may be between 210 to 310 mm, for instance between 210 and 280 mm. The transmission span distance (d1) be chosen based on the country where the device is to be used, and a dimension of the toilet bowl therein.

[0111] The superior side (42) of the longitudinal transmission member (40) may comprise a concave region (48) disposed between a proximal end (10) and distal end (12) of the transmission member (40). The concave region (48) configured for accommodating (obstructive) external tissue structures (disposed an anterior-inferior side of a pelvic floor) of the subject during movement of the pressure applicating region (60) in a (net) superior (S) direction.

[0112] The concave region (48) may have a concave depth (cd) that is between 20 and 50 mm, wherein the concave depth is a distance between: a minimum (lowest point) of the concave region (48) on a medial cross-section of the foldable device (100), and a straight line (InC) between a center of rotation (aa) of the revolute joint (80) and a (superior) terminal end (bb) (apex or mid point of) of the pressure applicating member (62)) on the same medial cross-section of the foldable device (100), wherein the distance is measured along an axis contacting the minimum (lowest point) of the concave region (48) and crossing the straight line (LnC) at 90 deg.] The centre of rotation (aa) is a single point on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in a lateral (Lj-Lr) direction. The centre of rotation (aa) is at a single point at an interface between the handle and transmission member on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in an inferiosuperior (l-S) direction.

[0113] The concave region (48) helps to prevent the transmission member from contacting obstructive external tissue structures disposed an anterior-inferior side of a pelvic floor of the subject. This means that more actuating force applied by the subject to the handle is transmitted to the pressure applicating region (60) and so to the perineum of the subject. There is less discomfort to the subject caused by application of pressure to regions not being treated by the device.

[0114] A part of the transmission member (40) comprises a rolling region (46) configured for rolling contact with a sitting surface (530) of a toilet bowl. The rolling region is disposed in a proximal (anterior) part of the transmission member (40). The rolling region (46) is disposed on an inferior (I) side of the transmission member (40). The rolling region (46) is longitudinal. The rolling region is curved outwards (convex), thereby allowing the rolling contact with a sitting surface (530) of a toilet bowl. The rolling region (46) is curved in a longitudinal direction of the transmission member (40). The rolling is in a longitudinal direction of the transmission member (40). The rolling region (46) is disposed within a proximal (10) end or half of transmission member (40). The rolling is disposed in a longitudinal direction of the transmission member (40). The foldable device pivots on the sitting surface of the toilet bowl, thereby allowing transmission of levering force from the longitudinal handle (20) to the longitudinal transmission member (40).

[0115] The rolling region provides a stable interface between the foldable device and the sitting surface (530). Compared with an acute angle pivoting corner, the rolling region is able to rest and optionally balance on the sitting surface (530), without or with minimal support by the subject. This prevents the foldable device from slipping e.g. onto the floor or into the toilet bowl if grip is momentarily released. The rolling region further allows an accommodation of different height ranges between subjects, as the perineum may be at different heights, depending on the degree of its descent. The rolling region (46) may be covered, at least partially (preferably entirely), with a nonslip substance (e.g. silicone, rubberized substance, thermoplastic elastomer).

[0116] The non-slip substance facilitates one-handed operation, by resisting slippage of the rolling region (46) on the sitting surface of a toilet bowl. One handed operation serves a motor impaired or disabled sub-population.

[0117] A revolute joint (80) connects the longitudinal handle (20) to the transmission member (40). The revolute joint has only one degree of freedom of rotation. The revolute joint (80) connects the distal end (12) of the longitudinal handle (20) to the proximal end of the transmission member (40). The revolute joint (80) allows rotation of the longitudinal handle (20) relative to the proximal end of the transmission member (40). The revolute joint (80) allows rotation of the longitudinal handle (20) relative to the proximal end of the transmission member (40) between the storage configuration and the operational configuration.

[0118] An axis of rotation of the revolute joint (80) may be disposed in a lateral (Li-Lr) direction (see for instance, FIGs. 1 to 7). An axis of rotation of the revolute joint (80) may be disposed in a net superioinferior (S-l) direction (see for instance, FIGs. 8 to 9).

[0119] When the revolute joint adopts a storage angle, the foldable device is in the storage configuration.

[0120] The revolute joint at the storage angle may be at a limit of its range of rotation. The revolute joint may comprise a rotation limiter, configured to prevent further rotation of the joint in one direction beyond the storage angle. The limit of rotation may be present when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7). The limit of rotation may be present when an axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0121] The revolute joint may comprise a ratchet mechanism, configured to releasably lock an angle adopted by the revolute joint at one or more angles, including at the storage angle. Such ratchet mechanisms are known in the art (e.g. ratchet hinge). Typically a ratchet mechanism is releasable using a button (e.g. push button) allowing rotation again around the revolute joint. The selected angle may be locked by releasing the push button for example. Other types of lock or release are known in the art. The ratchet mechanism may be present when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7); the ratchet mechanism may be configured to lock at at least 1 angle (storage angle, and optionally the operation angle, and optionally one or more angles between the storage angle and operation angle).

[0122] The ratchet mechanism may be present when an axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8); the ratchet mechanism may be configured to lock at at least 1 angle (storage angle, and optionally the operation angle, and optionally one or more angles between the storage angle and operation angle).

[0123] The revolute joint may comprise a click stop mechanism, configured to hold an angle adopted by the revolute joint at one or more angles, including the storage angle. Such click stop mechanisms are known in the art. Typically, a click stop mechanism holds the revolute joint at a pre-selected angle including the storage angle when applied rotational force is below a certain threshold. When rotational force applied is above a certain threshold, joint may be released from the pre-selected angle. The click stop mechanism may be present when an axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0124] When the revolute joint adopts an operational angle, the foldable device is in the operational configuration.

[0125] The revolute joint at the operational angle may be at a limit of its range of rotation. The revolute joint may comprise a rotation limiter, configured to prevent further rotation of the joint in one direction beyond the operational angle. The limit of rotation may be present when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7). The limit of rotation may be present when an axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0126] The use of a revolute joint with a limited range of rotation allows for an easier manufacture of different versions of the foldable device (suited to different sub-populations), each having a different range of rotation giving rise to different foldable devices each having a different operational angles. Because only design components (e.g. in the mold) in relation to the revolute joint need to be changed (e.g. placement of rotation limiters), and no substantial redesign of the longitudinal handle (20) or a transmission member (40) is needed, from a manufacturing point of view, it is not difficult to obtain a range of different foldable devices (e.g. using a modular mold). This compared with a non-folding version where each device having a different operational angle requires a substantial redesign of the mold, which is highly expensive.

[0127] The revolute joint may comprise a ratchet mechanism, configured to lock an angle adopted by the revolute joint at one or more angles, including at the operational angle. Such ratchet mechanisms are known in the art (e.g. ratchet hinge). Typically a ratchet mechanism is releasable using a button (e.g. push button) allowing rotation again around the revolute joint. The selected angle may be locked by releasing the push button for example. Other types of lock or release are known in the art. The ratchet mechanism may be present when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7). The ratchet mechanism may be present when an axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0128] The use of a ratchet mechanism allows selection of a different operational angles suited to different sub-populations, without changing the design. This compared with an nonfolding version where each device having a different operational angle requires a substantial redesign of the mold, which is highly expensive.

[0129] The revolute joint may comprise a click-stop mechanism, configured to hold an angle adopted by the revolute joint at one or more angles, including the operational angle. Such click stop mechanisms are known in the art. Typically, a click stop mechanism holds the revolute joint at a pre-selected angle including the storage angle when applied rotational force is below a certain threshold. When rotational force applied is above a certain threshold, joint may be released from the pre-selected angle. The click stop mechanism may be present when an axis of rotation of the revolute joint is disposed in a superiorinferior direction (see, for instance, FIG. 8).

[0130] The use of a click stop mechanism provides the subject with haptic feedback when the foldable device is at least in the operational configuration. The risk is reduced that a nonoperation angle is selected which could reduced the effectiveness of the foldable device and / or cause the foldable device to revert to the storage configuration during use.

[0131] The revolute joint may comprise a spring-opening mechanism, biased in the operational configuration, and configured to maintain the storage configuration using an actuatable catch (that stops the revolute joint from returning to the biased operational configuration). Upon actuation of the catch in the storage configuration, the device (100) reverts to the biased operational configuration. With the spring-opening mechanism, the foldable device (100) can rapidly convert from the storage configuration to operational configuration by actuation of the actuatable catch. The actuatable catch preferably contains a mechanical button (e.g. press button, slide button) which upon actuation release a pawl / bar from engagement with a notch / hole in the storage configuration. When the pawl is engaged with the notch / hole in the storage configuration, the movement of the revolute joint to the biased operational configuration is stopped. When the pawl is released from the notch / hole in the storage configuration, the revolute joint moves to the biased operational configuration. The use of a spring-opening mechanism allows a rapid, one-handed deployment.

[0132] When the axis of rotation of the revolute joint (80) is in a lateral direction (Lr-Li), the revolute joint (80) may have an angular range of rotation (ar). The angular range of rotation (ar) is an angle adopted by the revolute joint (80) in the operational configuration (a0) minus an angle adopted by the revolute joint in the storage configuration (as). Angle (a0) is an angle measured (FIG. 7) in the operational configuration (maximally open) between a primary line (LnP) that contacts both a center of rotation (aa) of the revolute joint (80) and a fixed point (cc) on a medial cross-section of the handle (20) of the foldable device (100), and a secondary line (LnS) that contacts both the center of rotation (aa) of the revolute joint (80) and a fixed point (dd) on a medial cross-section of the transmission member (40) of the foldable device (100)). Both medial cross-sections are co-planar. Angle (as) is an angle measured (FIG. 6) in the storage configuration (maximally closed) between the aforementioned primary line (LnP) and secondary line (LnS) on a same medial crosssection of the foldable device (100). The angular range of rotation may a value in a range equal to or greater than 90 deg and equal to or less than 150 deg, preferably in a range equal to or greater than 90 deg and equal to or less than 120 deg.

[0133] In the operational (unfolded) configuration the foldable device is operational, and is configured to transform at least a part of the actuating force applied to handle (20) [by pivoting of the rolling region on the sitting surface of a toilet bowl], to a movement of the pressure applicating region (60) in a (net) superior (S) direction. In the operational configuration a proximal tip of the longitudinal handle (20) is maximally separated from a distal tip of the longitudinal transmission member (40). The foldable device is stable in the operational configuration. In the operational (unfolded) configuration the longitudinal handle (20) and the transmission member (40) are disposed such that the longitudinal handle (20) is mainly anterior (A) of the transmission member (40). The length of the foldable device in the operational configuration is a combined length of the longitudinal handle (20) and the transmission member (40), less any overlap due to the revolute joint.

[0134] The revolute joint (80) may be extended to an upper limit of its range of rotation in the operational configuration. In particular, where the axis of rotation of the revolute joint is disposed in a lateral (Ll-Lr) direction, the revolute joint (80) may be extended to an upper limit of its range of rotation in the operational configuration.

[0135] A lever angle (gamma) is an angle adopted between a first straight line (In 1 ) and a second straight line (I2) on a medial cross section of the foldable device in the operational configuration (see FIG. 5). The first straight line (In1) is between a (superior) terminal end (bb) (apex or mid point of) of the pressure applicating member (62), and an inferior most point (pp) of the rolling region (46) in a medial cross section of the foldable device in the operational configuration. The foldable device may be tilted in the medial plane so that the first straight line (In1) is horizontal.

[0136] The second straight line (In2) is between the aforementioned inferior most point (pp) of the rolling region (46), and a point (qq), that is a point on the handle (20) posterior side (25) where a force vector is applied for operation of the device. The force vector is a resultant of the force exerted by the hand on the handle, when the hand pushes the handle downwards.

[0137] The lever angle (gamma) may be a value in a range equal to or greater than 90 deg and equal to or less than 150 deg, preferably in a range equal to or greater than 90 deg and equal to or less than 120 deg.

[0138] The device is configured such that the angle between the first straight line (In1) and the second straight line (In2) cannot exceed the lever angle (gamma) (see, for instance, FIG. 5). In other words, the device is configured to prevent an adoption of the angle between the first straight line (In1) and the second straight line (In2) greater than the lever angle (gamma). Avoiding exceeding the lever angle (gamma) or preventing adoption of an angle greater than the lever angle (gamma) maybe realised by one or more rotation limiters (e.g. disposed in relation to the revolute joint); the one or more rotation limiters may be present when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7). Alternatively, avoiding exceeding the lever angle (gamma) or preventing adaptation of an angle greater than the lever angle (gamma) may be realised by having a fixed angle between the longitudinal transmission member (40) and the longitudinal handle (20) in the operational configuration; the fixed angle is realised when the axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0139] A lever angle (gamma) being greater than 90 deg places the handle (and force-receiving region, and upper handle) a distance away from the abdomen of the subject, so that the subject is able to dispense the actuating force using one hand wherein musculature of the kinematic chain of the arm is better balanced to apply a posterior to anterior motion. With lever angle gamma greater than 150 deg, the subject is compelled to apply an actuating downward (superior to inferior) force which the inventor have found to be difficult to apply. By limiting the angle between the first straight line (In 1 ) and the second straight line (In2) such that it cannot exceed than the lever angle (gamma), optimal leverage becomes available by default in the operational configuration since the posterior to anterior motion provides a force that both reinforces opening of the device into the operational configuration and maintains the lever angle (gamma) during use which cannot be exceeded.

[0140] A jaw angle (beta) is the angle adopted between a straight line (InC) and a straight line (LnJ), when the foldable device is in the operational configuration (see FIG. 7). The straight line (InC) is between a center of rotation (aa) of the revolute joint (80) and a (superior) terminal end (bb) (apex or mid point of) of the pressure applicating member (62)) on a medial cross-section of the foldable device (100) in an operational configuration. The centre of rotation (aa) is a single point on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in a lateral (Lj-Lr) direction. The centre of rotation (aa) is a single point at an interface between the handle and transmission member on the medial cross-section of the foldable device (100) when the axis of rotation of the revolute joint (80) is in an inferiosuperior (l-S) direction. The straight line (LnJ) is between the same center of rotation (aa) of the revolute joint (80) and a terminal end (ee) of the handle (20) of the foldable device (100) on a medial cross-section of the foldable device (100) in an operational configuration. The jaw angle beta may be a value in a range equal to or greater than 90 deg and equal to or less than 150 deg, preferably in a range equal to or greater than 90 deg and equal to or less than 120 deg.

[0141] The device is configured such that the angle between the straight line (InC) and a straight line (LnJ) cannot exceed the jaw angle (beta) (see, for instance, FIG. 7) . In other words, the device is configured to prevent an adoption of the angle between the straight line (InC) and a straight line (LnJ), greater than the jaw angle (beta). Avoiding exceeding the jaw angle (beta) or preventing adaptation of an angle greater than the jaw angle (beta) maybe realised by one or more rotation limiters (e.g. disposed in relation to the revolute joint); the one or more rotation limiters may be present when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7). Alternatively, ). Avoiding exceeding the jaw angle (beta) or preventing adaptation of an angle greater than the jaw angle (beta) may be realised by having a fixed angle between the longitudinal transmission member (40) and the longitudinal handle (20) in the operational configuration; the fixed angle is realised when the axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0142] A jaw angle beta being greater than 90 deg places the handle (and force-receiving region, and upper handle) a distance away from the abdomen of the subject, so that the subject is able to dispense the actuating force using one hand wherein musculature of the kinematic chain of the arm is better balanced to apply a posterior to anterior motion. With jaw angle beta greater than 150 deg, the subject is compelled to apply an actuating downward (superior to inferior) force which the inventor have found to be difficult to apply. By limiting the angle between the straight line (InC) and the straight line (LnJ) such that it cannot exceed than the jaw angle (beta), optimal leverage becomes available by default in the operational configuration since the posterior to anterior motion provides a force that both reinforces opening of the device into the operational configuration and maintains the jaw angle (beta) during use which cannot be exceeded.

[0143] A projection angle (epsilon) is an angle between two straight lines on a projection (102) of foldable device (100) onto a projection plane, wherein the projection plane is a plane perpendicular to the axis of rotation of the revolute joint (80). For example, FIG. 12 shows a projection (102) of the foldable device (100) of FIG. 7. For example, FIG. 13A shows a projection (102) of the foldable device (100) of FIG. 8 in an operational configuration and FIG. 13B shows a projection (102) of the foldable device (100) of FIG. 8 moving towards a storage configuration.

[0144] A first straight line (LnKp) is between a center of rotation (aa) of the revolute joint (80) and a distal tip (ff) of the transmission member (40) of the foldable device (100) on the projection (102). The distal tip (ff) of the transmission member (40) is an extreme distal end of the transmission member (40) on the projection (102). The centre of rotation (aa) is a single point on the projection (102) of foldable device (100). A second straight line (LnJp) is between the same center of rotation (aa) of the revolute joint (80) and a proximal tip (ee) of handle (20) of the foldable device (100) on the projection (102). The proximal tip (ee) of handle (20) is an extreme proximal end of the transmission member (40) on the projection (102) of the foldable device (100).

[0145] In the operational configuration

[0146] - the projection angle (epsilon) may be a value equal to or greater than 90 deg and equal to or less than 150 deg, preferably a value equal to or greater than 90 deg and equal to or less than 120 deg, when an axis of rotation of the revolute joint is disposed in a lateral (Li-Lr) direction (see, for instance, FIGs. 1 to 7), or

[0147] - the projection angle (epsilon) may be a value equal to or greater than 175 deg and equal to or less than 185 deg, when the axis of rotation of the revolute joint is disposed in a superior-inferior direction (see, for instance, FIG. 8).

[0148] The upper limit of the projection angle (epsilon) cannot be exceeded. By having an upper limit to the projection angle (epsilon) that cannot be exceeded, optimal leverage becomes available by default in the operational configuration since the posterior to anterior motion provides a force that both reinforces opening of the device into the operational configuration and maintains projection angle (epsilon) during use which cannot be exceeded.

[0149] In the storage (folded) configuration the foldable device is non-operational, and is size reduced. The foldable device (100) in the storage configuration is folded (closed) around the revolute joint (80). In the storage configuration a proximal tip of the longitudinal handle (20) is minimally separated from a distal tip of the longitudinal transmission member (40). The foldable device is stable in the storage configuration. In the storage (folded) configuration the longitudinal handle (20) and the transmission member (40) are disposed such that the longitudinal handle (20) is mainly superior (S) of the transmission member (40). The length of the foldable device in the storage configuration may be reduced to the longer of the longitudinal handle (20) and the transmission member (40).

[0150] The revolute joint (80) may be closed to a lower limit of its range of rotation in the storage configuration. In particular, where the axis of rotation of the revolute joint is disposed in a lateral (Ll-Lr) direction, the revolute joint (80) may be closed to a lower limit of its range of rotation in the storage configuration.

[0151] The transmission superior side (42) of the transmission member (40), and the handle posterior side (25) preferably have complementary shapes, and the device (100) is configured such that the complementary shapes align / nest in the storage configuration.

[0152] By folded (closed) around the revolute joint (80), it is meant:

[0153] - the projection angle (epsilon) may be a value equal to or less than 45 degrees, preferably a value equal to or less than 10 deg; and / or

[0154] - the longitudinal handle (20) and the longitudinal transmission member (40) meet; and / or

[0155] - the longitudinal handle (20) and the transmission member (40) both extend from the axis of rotation of the revolute joint (80) in a net posterior (P) direction; and / or

[0156] - the longitudinal handle (20) and the longitudinal transmission member (40) are stacked one over the other in a superior to inferior direction. By stacked it is meant that when both the longitudinal handle (20) and transmission member (40) are each aligned along a horizontal plane and the respective planes are parallel, the longitudinal handle (20) is disposed superior (S) to the longitudinal transmission member (40).

[0157] Being able to be folded (closed) has an advantage of reduced storage space in the storage configuration. In the storage configuration the device can fit in to a pocket or bag (e.g. handbag), for instance.

[0158] The device (100) may be configured, in particular the longitudinal handle (20) may be configured such that in the storage configuration the pressure applicating region (60) (or pressure applicating member (62)) is covered by the longitudinal handle (20). The device, in particular the longitudinal handle (20) may be configured such that, in the storage configuration, at least an (superior (S)) apex of the pressure applicating region (60) (or pressure applicating member (62)) is covered by the longitudinal handle (20).

[0159] The device may be configured, in particular the longitudinal handle (20) may be configured such that, in the storage configuration, at least the (superior (S)) apex of the pressure applicating region (60) (or pressure applicating member (62)) is covered by a posterior (P) end or proximal (10) end of the longitudinal handle (20). The device may be configured, in particular the longitudinal handle (20) may be configured such that, in the storage configuration, at least the (superior (S)) apex of the pressure applicating region (60) (or pressure applicating member (62)) is covered by the longitudinal handle (20).

[0160] By covered, it is meant that the longitudinal handle (20) is configured as a safety guard to prevent contact at least with the (superior (S)) apex of the pressure applicating region (60) (or pressure applicating member (62)) in a superior to inferior direction by a foreign body. By covered, it is meant that contact with an (superior (S)) apex of the pressure applicating region (60) (or pressure applicating member (62)) in a superior to inferior direction by a foreign body is blocked by the presence of the longitudinal handle (20). Examples of pressure applicating region (60) being covered by the longitudinal handle (20) in the closed configuration are shown in FIGs. 14 and 15. Examples of pressure applicating region (60) not being covered by the longitudinal handle (20) in the closed configuration are shown in FIGs. 3, 6, and 9.

[0161] Covering the pressure applicating region (60) (or pressure applicating member (62)) has an advantage of reducing damage to the pressure applicating region (60) during storage. For instance, the pressure applicating region (60) (or pressure applicating member (62)) may be prone to damage in a pocket or bag. It may be compressed or subject to sheer forces. By covering it with the longitudinal handle (20), exposure to damage-inducing objects is minimised.

[0162] This has an advantage of reducing contamination of the pressure applicating region (60) (or pressure applicating member (62)) during storage. For instance, the pressure applicating region (60) may become contaminated with particles, food, skin, and the like. By covering it with the longitudinal handle (20), contamination of the pressure applicating region (60) (or pressure applicating member (62)) by the particles, food, skin or vice versa is minimised. According to one aspect, the device may comprise a closure stop member, wherein the closure stop member is a stop member configured to limit or stop movement of the longitudinal handle (20) towards the longitudinal transmission member (40) or vice versa, when the device is in the storage configuration. The closure stop member may be disposed in fixed (pose) relation to the longitudinal handle (20) or to the longitudinal transmission member (40).

[0163] By providing the closure stop member, the device (100) resists application of compression (squeezing) force between the longitudinal handle (20) and the longitudinal transmission member (40) in the storage configuration that would cause damage to the pressure applicating region (60) (or pressure applicating member (62)) when the pressure applicating region (60) (or pressure applicating member (62)) is covered by the longitudinal handle (20).

[0164] According to one aspect, a length of the transmission member (12) and a length of the longitudinal handle (20) are equal or no more than 20% different.

[0165] The length of the transmission member (12) is a straight-line distance (sld1) between a distal (12) tip of transmission member (12) and axis of rotation around the revolute joint. The length of the longitudinal handle (20) is a straight-line distance (sld2) between a proximal (10) tip of longitudinal handle (20) and axis of rotation around the revolute joint. See, for example, FIGs. 12, 13A and 13B.

[0166] According to one aspect:

[0167] - a straight-line distance (sldl) between a distal (12) tip of transmission member (12) and axis of rotation around the revolute joint, and

[0168] - a straight-line distance (sld2) between a proximal (10) tip of longitudinal handle (20) and axis of rotation around the revolute joint, differ by 20% or less.

[0169] The straight line distance (sld1 and sld2) may be measured on a medial cross section of the foldable device in the operational configuration. Alternatively, the straight line distance (sld1 and sld2) may be measured on a projection plane, wherein the projection plane is a plane perpendicular to the axis of rotation of the revolute joint (80). For example, FIGs. 12, 13A and 13B show: - a straight-line distance (sld1) of the first straight line (InKp) between a center of rotation (aa) of the revolute joint (80) and a distal tip (ff) of the transmission member (40) on the projection (102); and

[0170] - straight-line distance (sld2) of the second straight line (LnJp) between the same center of rotation (aa) of the revolute joint (80) and a proximal tip (ee) of handle (20) on the projection (102).

[0171] The calculation of the percentage difference is made by subtracting the shorter length from the larger length and dividing by the larger length. For instance 60 cm and 50 cm are 16.67 % different.

[0172] This has an advantage of maximising a total length differential of the device in the folded configuration compared with in the operational configuration. The operational configuration length can be at least 170 percent of the folded configuration length. It minimises storage space requirements in the storage configuration, while mechanical advantage (leverage) in the operational configuration is maximised. In the storage configuration the device is able to fit in to a pocket or bag (e.g. handbag) thereby providing discretion to the subject, while in the operational configuration mechanical advantage is comparatively doubled, reducing force needed to be applied by the subject.

[0173] The pressure applicating region (60) is configured for:

[0174] - contact with / application of pressure to the perineum, or

[0175] - attachment of a pressure applicating member (62) configured for contact with / application of pressure to the perineum.

[0176] The pressure applicating region (60) is provided on the transmission superior side (42), at the distal end (12) or posterior side (P), of the transmission member (40). More in particular, an apex of the pressure applicating region (60) is provided only on the transmission superior side (42), at the distal end (12) or posterior side (P), of the transmission member (40).

[0177] Where the pressure applicating region (60) is configured for contact with / application of pressure to the perineum, the pressure applicating region (60) is preferably formed into the pressure applicating member (62, b) (FIG. 1B). The pressure applicating member (62, b) is thus non-dismountably fixed to or formed from the pressure applicating region (60). Where the pressure applicating region (60) is configured for attachment of a pressure applicating member (62, a) (FIG. 1A), the pressure applicating region (60) may be formed as a structure for receiving and mounting of the separate pressure applicating member (62, b). The pressure applicating member (62, a) may be thus dismountably fixed to the pressure applicating region (60).

[0178] The pressure applicating member (62, a or 62, b) may have a domed surface. Alternatively, the pressure applicating member (62, a or 62, b) may have an annular or annular segment shape. As a general guidance, pressure applicating member (62, a or 62, b) may have a height of 8 to 20 mm, however, it is understood that other heights may be used depending on the subject.

[0179] The domed surface or annular shape allows the subject to centre the pressure applicating member (62, a or 62, b) on the perineum and subsequently move the rolling region (46) around an arc centred on the pressure applicating member (62, a or 62, b) without causing discomfort to the subject and while maintaining an even quantity of contact surface area. During use, the rolling region (46) is typically placed on the sitting surface, the pressure applicating member (62, a or 62,b) applied to the perineum, and the rolling region (46) is sometimes re-positioned to suit the subject (e.g. moved lateral left if left handed, or moved lateral right if right handed) - the domed surface or annular shape allows contact with the perineum to be maintained during repositioning and the lack of corners avoids causing discomfort to the subject.

[0180] The folding device may be made substantially from any suitable rigid (bend resistant) material. Examples include polymers such as polycarbonate, polypropylene, acrylonitrile butadiene styrene (ABS), or a polymer blend, such as ABS / polycarbonate (PC), acrylonitrile styrene acrylate (ASA) / PC. The pressure applicating member may be made from the same material, of from a different material as the rest of the device such as from a thermoplastic elastomer, such as thermoplastic polyurethane (TPU) or thermoplastic polyamide (TPA).

[0181] The sitting surface (530) of the toilet bowl (500) refers to the upper most surface of the toilet assembly that comes into contact with the body of the subject. The sitting surface (530) may be provided on a drop-down seat (520) of the toilet bowl (500), or on a rim (510) of the bowl (500) where no seat 520) is present or the seat is upright. An example of a toilet bowl (500) is shown in FIG. 10, without seat (A) and with seat (B). An example of a subject (300) sat on drop-down seat (520) of a toilet bowl (500) is shown in FIG. 11 , together with the foldable device (100). At least a part of the actuating force (310) applied to handle (20) by the subject (300) in an anterior direction (A) is transformed (by pivoting of the rolling region on the sitting surface (530) of a toilet bowl) to a movement (520) of the pressure applicating region (60) in a (net) superior (S) direction.

[0182] According to one aspect, the foldable device (100) is a clamshell foldable device, wherein

[0183] - the longitudinal handle (20) formed as a part of a first clamshell body of a clamshell; and

[0184] - the longitudinal transmission member (40) formed as a part of a second clamshell body of the clamshell.

[0185] The first clamshell body and the second clamshell body are mutually rotatably joined at one longitudinal end by a revolute joint.

[0186] Rotation of the first clamshell body around the revolute joint (80) relative to the second clamshell body), and / or vice versa switches between the operational configuration and the storage configuration.

[0187] The first clamshell body (longitudinal handle (20)) contains a first holding space. In the clamshell (storage) closed configuration first clamshell body and second clamshell body co-operate such that the pressure applicating region (60) is disposed in the first holding space.

Claims

Claims1. A foldable device (100) for assisting defecation in a subject suffering from perineal descensus comprising:- a longitudinal handle (20);- a longitudinal transmission member (40);- a revolute joint (80) connecting the longitudinal handle (20) to the transmission member (40); and- a pressure applicating region (60):- formed as a pressure applicating member (62) configured for contact with / application of pressure to the perineum of the subject; or- configured for demountable attachment of a pressure applicating member (62) configured for contact with / application of pressure to the perineum of the subject; wherein:- the device (100) has an operational configuration and a storage configuration, and is switchable between the operational configuration and the storage configuration by a rotation of the longitudinal handle (20) around the revolute joint (80) relative to the longitudinal transmission member (40), and / or vice versa,- a part of the transmission member (40) comprises a rolling region (46) configured for rolling contact with a sitting surface (530) of a toilet bowl (500); and- in the operational configuration, the device (100) is configured to:- roll along the rolling region (46) responsive to an actuating force applied to handle (20) by the subject; and- transform at least a part of the actuating force applied to handle (20), to a movement of the pressure applicating region (60) in a net superior (S) direction, wherein in the storage configuration the foldable device (100) is folded closed around the revolute joint (80).

2. The foldable device (100) according to claim 1 , wherein a length of the transmission member (12) and a length of the longitudinal handle (20) are equal or no more than 20% different.

3. The foldable device according to claim 1 or 2, wherein- in the storage configuration, a projection angle (epsilon) is a value equal to or less than 45 degrees, preferably a value equal to or less than 10 deg, and- in the operational configuration, the projection angle (epsilon) is a value greater than 90 deg and equal to or less than 150 deg, wherein- the projection angle (epsilon) is an angle between a first straight line (InKp) and a second straight line (LnJp) on a projection (102) of foldable device (100) onto a projection plane that is a plane perpendicular to the axis of rotation of the revolute joint (80),- the first straight line (InKp) is between a center of rotation (aa) of the revolute joint (80) and a (distal (12)) terminal end (ff) of the transmission member (40) of the foldable device (100) on the projection (102),- the second straight line (LnJp) is between the same center of rotation (aa) of the revolute joint (80) and a terminal end (ee) of the handle (20) of the foldable device (100) on the projection (102).

4. The foldable device (100) according to any one of claims 1 to 3, wherein a lever angle (gamma) is the angle adopted between a first straight line (In1) and a second straight line (In2) on a medial cross section of the foldable device (100) in the operational configuration wherein:- the first straight line (In 1 ) is between a superior terminal end (bb) an apex or mid point of the pressure applicating member (62), and an inferior (I) most point (pp) of the rolling region (46) in a medial cross section of the foldable device in the operational configuration;- the second straight line (In2) is between the same inferior (I) most point (pp) of the rolling region (46) and a point (qq) that is a point on the handle (20) posterior side (25) where a force vector is applied operation of the device in the same medial cross section of the foldable device (100) in the operational configuration; and- the lever angle (gamma) is a value in a range equal to or greater than 90 deg and equal to or less than 150 deg, preferably in a range equal to or greater than 90 deg and equal to or less than 120 deg, and- the device is configured such that the angle between the straight line (In1) and a straight line (Ln2) cannot exceed the lever angle (gamma).

5. The foldable device (100) according to any one of claims 1 to 4, wherein- the rolling contact is in a longitudinal direction of the transmission member (40); and- the rolling region (46) is a curved part of the transmission member (40) disposed on an inferior (I) side and at a proximal end of the transmission member (40).

6. The foldable device (100) according to any one of claims 1 to 5, wherein the longitudinal handle (20) is configured such that, in the storage configuration the pressure applicating region (60) is covered by the longitudinal handle (20).

7. The foldable device (100) according to any one of claims 1 to 6, wherein a transmission superior side (42) of the transmission member (40), and posterior side (25) the handle (20) have complementary shapes, and the device (100) is configured such that the complementary shapes nest in the storage configuration.

8. The foldable device (100) according to any one of claims 1 to 7, wherein a superior side (42) of the longitudinal transmission member (40) comprises a concave region (48) that is concave in an inferior (I) direction, wherein the concave region (48) is configured for accommodating obstructive external tissue structures of the subject during movement of the pressure applicating region (60) in the net superior (S) direction.

9. The foldable device (100) according to any one of claims 1 to 8, wherein the handle (20) comprise a rounded bend (22) separating the handle (20) into an upper handle portion (24) and a lower handle (portion) (26), and the upper handle portion (24) comprises a forcereceiving region (23), configured to receive a pushing force applied by one or both of the hands of the subject.

10. The foldable device (100) according to any one of claims 1 to 9, wherein the rolling region (46) is covered at least partially with a non-slip substance.

11. The foldable device (100) according to any one of claims 1 to 10, wherein the longitudinal transmission member (40) has a transmission span distance (d1) that is a straight line (InC) distance between an axis of rotation (aa) of the revolute joint (80) and a superior terminal end (bb) of the pressure applicating member (62) on a medial crosssection of the foldable device (100), and the transmission span distance (d1) is between 210 and 310 mm.

12. The foldable device (100) according to any one of claims 1 to 11 , wherein the revolute joint comprises a ratchet mechanism, configured to releasably lock the revolute joint at one or more angles, including at a storage angle that is an angle adopted by the revolute joint in the storage configuration, and / or at an operational angle that is an angle adopted by the revolute joint in the operational configuration.

13. The foldable device (100) according to any one of claims 1 to 12, wherein the revolute joint comprises a click-stop mechanism, configured to hold the revolute joint at a preselected angle when applied rotational force is below a threshold, wherein the preselected angle is a storage angle that is an angle adopted by the revolute joint in the storage configuration, and / or is an operational angle that is an angle adopted by the revolute joint in the operational configuration.

14. The foldable device (100) according to any one of claims 1 to 13, wherein the revolute joint comprises a spring-opening mechanism, biased in the operational configuration, and configured to maintained the storage configuration using an actuatable catch that stops the revolute joint from returning to the biased operational configuration.

15. The foldable device (100) according to any one of claims 1 to 14, wherein the pressure applicating member (62) comprises a domed surface or annular shape.

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