Bedpan

The ergonomic design of the bedpan addresses discomfort and hygiene issues by distributing weight evenly and preventing skin injury, improving comfort and safety during use and handling.

WO2025248193A1PCT designated stage Publication Date: 2025-12-04INSTITUT CURIE
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Patent Information

Application Number
PCT/FR2025/050458
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-31
Filing Date
2025-05-27
Publication Date
2025-12-04

AI Technical Summary

Technical Problem

Existing medical bedpans cause discomfort, skin complications, and hygiene issues due to their non-ergonomic design, leading to pressure sores, urinary tract infections, and difficulty in handling and cleaning.

Method used

A bedpan with an asymmetrical oval-shaped opening and rounded edges, featuring multiple support surfaces to distribute weight evenly and prevent skin injury, combined with a streamlined design for easy insertion and removal, and a biocompatible material for hygiene and durability.

Benefits of technology

The ergonomic design reduces pressure sores, enhances patient comfort, minimizes the risk of urinary tract infections, and facilitates safe handling and cleaning, ensuring effective containment of bodily waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a bedpan (100) comprising a shovel-shaped elongate body (101) extending between a rear end (106) and a front end (105), and a grip handle (107) arranged in the rear end (106), the body comprising: - a flat bottom (120); - a vertical wall (140); - an upper wall (130) having a profiled front edge (131) oriented towards the front of the bedpan and a concave rear edge (132) oriented towards the front end of the bedpan (100); - the bottom (120) and the vertical wall (140) thus together defining an open reservoir (108); - wherein the reservoir is provided with an opening (109) bounded by the concave rear edge (132) of the upper wall (130) and a portion (146) of the upper peripheral edge of the vertical wall (140); - and wherein the upper wall (130) forms two lateral bearing surfaces (133G, 133D) laterally bordering the opening of the bedpan (109) and extending towards the interior of the opening (109) and a front bearing surface (134) in a median direction with respect to the lateral bearing surfaces such that, when the bedpan is placed under the patient, the weight of the patient is optimally distributed over the three bearing surfaces (133G, 133D, 134).
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Description

Description Title: Bedpan technical field

[0001] The present invention relates to a medical bedpan used to collect urine and feces from a bedridden person in an easy, hygienic and comfortable manner. Previous technique

[0002] A medical bedpan, also known as a bedpan, is currently used to collect feces and urine. It is generally used for bedridden individuals who cannot get out of bed, such as the sick or elderly.

[0003] For the remainder of the description, feces and urine are referred to as "contents".

[0004] The healthcare staff positions the bedpan by placing it under the patient using the handle, with the end opposite the handle facing forward. After use, the healthcare staff removes the bedpan using the handle and, holding it vertically or horizontally with a lid, takes it to a suitable location to empty its contents, wash, and disinfect it for reuse. It can also be washed in a bedpan washer.

[0005] Depending on the patient's position, the bedpan is inserted and removed forward, backward, or laterally relative to the patient. Healthcare staff must exercise particular care to avoid injuring the patient and to prevent any contact with the contents.

[0006] Figure 1 represents a known bed basin 1. It comprises an elongated hollow body, in the shape of a "shovel" with an opening 8, a gripping handle 7 arranged in the extension of the body in its longest dimension and in the rear part 6 of the body opposite the front part forming the lowest part of the shovel.

[0007] The body comprises a flat base 2 designed to rest on the bed of a bedridden person, a vertical wall 4 extending upwards from the peripheral edge of the base, and an upper wall 3 extending partially into the front part of the body. The base 2 and the peripheral wall 4 together define a cavity or reservoir partially closed by the upper wall 3. Thus, the peripheral edge of the upper wall, oriented towards the rear end of the body, and the upper peripheral edge of the vertical wall delimit the opening. The vertical wall 4 is formed by a pair of opposing side wall sections, a The pelvis consists of a front end wall section and a rear end wall section. The rear end wall section is larger than the front end section. The side sections taper from the rear end wall section to the front end wall section. The upper wall is thus inclined relative to the lower wall, or the bottom of the body. Therefore, the front part of the pelvis, which forms the seat of the bedpan, is lower than the rear part of the pelvis, allowing caregivers to more easily slide the bedpan under the patient's body.

[0008] To position the bedpan under the buttocks of a patient lying on their back in bed, the bedpan is grasped by the caregiver using handle 7, inserting the front end 5 and the upper wall 3 first. The caregiver then pushes the bedpan in. Once positioned under the patient's buttocks, part of the patient's body rests against the upper wall and the edge of the opening. The term "caregiver" refers to any person who positions the bedpan for the patient's needs.

[0009] Although the contoured "shovel" shape allows it to conform to the shape of the patient's back and facilitates its installation, such a bedpan presents many disadvantages, both for the care staff and for the patient himself.

[0010] Indeed, although the presence of the upper wall allows the patient to rest their buttocks, such a bedpan offers a very small support surface and is not compatible with the natural shape of the human body, particularly at the opening. When a person is bedridden for an extended period, the parts of their body frequently in contact with the bedpan are already weakened, and if their sacrum remains under excessive pressure on the bedpan for too long, skin complications, such as pressure sores, can develop. This phenomenon can be exacerbated in overweight patients.

[0011] In addition, such a bedpan places the patient in an uncomfortable position, preventing the patient from properly satisfying their natural needs, which may lead to a urinary tract infection and / or constipation.

[0012] The shape of the shovel facilitates installation. However, this shape does not allow for effective cleaning due to the acute angle formed between the front end section of the vertical wall and the bottom of the tank.

[0013] In addition, due to the structure of the opening which has a rim extending outwards from the cavity, when removing the medical bedpan, the movement of the bedpan may cause the contents to spill during the operation, making the removal of the medical bedpan difficult for the nursing staff.

[0014] These bedpans are currently used in all care units and cause the same discomfort for all patients. Therefore, there is an urgent need to offer a new bedpan designed to address the aforementioned drawbacks, with improved ergonomics and seating for all body types.

[0015] One objective of the present invention is to provide a bedpan that helps to limit pain associated with the placement of the bedpan and promotes patient comfort and autonomy.

[0016] Another objective of the present invention is to provide a bedpan that helps limit the risk of injury and trauma when putting on the bedpan.

[0017] Another objective of the present invention is to provide a bedpan which allows caregivers to transport, empty and rinse the bedpan without the risk of coming into contact with the contents of the bedpan, while ensuring a capacity equivalent to standard bedpans. Summary of the invention

[0018] According to one aspect, the present disclosure relates to a bedpan comprising an elongated, shovel-shaped body extending between a rear end and a front end, a gripping handle disposed in the rear end, said body comprising: - a flat bottom; - a vertical wall; - an upper wall having a profiled front edge oriented towards the front of the basin and a concave rear edge oriented towards the front end of the basin; - the bottom and the vertical wall thus together defining an open reservoir; - said tank being provided with an opening delimited by the concave rear edge of the upper wall and a portion of the upper peripheral edge of the vertical wall; - the upper wall forming two lateral support surfaces bordering laterally the opening of the pelvis extending towards the inside of the opening and a front support surface in a median direction to the lateral support surfaces so that when the pelvis is installed under the patient, the patient's weight is optimally distributed over the three support surfaces.

[0019] The features described in the following paragraphs may optionally be implemented, independently of each other or in combination with each other:

[0020] The edge of the concave rear edge of the upper wall has a notch.

[0021] The upper wall has a roughly asymmetrical oval shape with a truncated front end, the front edge of the upper wall having two rounded corners.

[0022] The free edge of the upper wall is extended by a rounded return downwards, thus forming a bead of round section to avoid injuring the patient's skin.

[0023] The vertical wall is formed from a pair of opposing side wall portions, a front end wall portion and a rear end wall portion, the four wall portions joining by connecting areas having a rounded shape convex outwards.

[0024] The lower edge of the vertical wall and the peripheral edge of the flat bottom meet at a junction area with a rounded shape convex outwards.

[0025] The front end side wall portion has a rounded shape that is convex outwards.

[0026] The height H2 of the rear end side wall portion is greater than that H1 of the front end side wall portion so that the upper wall (130) is inclined from rear to front relative to the bottom.

[0027] The profile of the upper wall in the longitudinal plane is designed to follow the curvature of the patient's lumbar region, forming a rounded convex part in the rear and a hollow part in the front.

[0028] The lateral support surfaces and the front support surface intended to come into contact with the patient's skin have rough edges, allowing the skin to adhere less to these surfaces, and thus facilitating the removal of the bedpan after use.

[0029] Preferably, the basin is made in one piece.

[0030] According to one embodiment, the basin is made of a biocompatible material chosen from the following list: polypropylene (PP), polyethylene (PE), homopolymer polypropylene Grade 12, polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA), or trimethyl carbonate. Brief description of the drawings

[0031] Other features, details, and advantages will become apparent upon reading the detailed description below and analyzing the attached drawings, on which: Fig. 1

[0032] [Fig. 1] Figure 1 represents a bed basin known from prior art; Fig. 2

[0033] [Fig. 2] Figure 2 represents a perspective view of a bed basin according to one embodiment. Fig. 3

[0034] [Fig. 3] Figure 3 represents a top view of the basin in Figure 2. Fig. 4

[0035] [Fig. 4] Figure 4 represents a cross-sectional view from the rear of the bed basin along axis AA of Figure 3. Fig. 5

[0036] [Fig. 5] Figure 5 represents a cross-sectional view of the bed basin along axis BB of Figure 3. Fig. 6

[0037] [Fig. 6] Figure 6 represents a perspective view from below of the bed basin. Fig. 7

[0038] [Fig. 7] Figure 7 represents a side view of the bed basin. Description of the implementation methods

[0039] In the figures, the same references denote identical or similar elements.

[0040] Figures 2 to 7 represent a bed basin according to one embodiment.

[0041] The bedpan 100 comprises an elongated body 101 in the shape of a "shovel", extending between a rear end 106 and a narrower front end 105, a gripping handle 107 arranged in the extension of the elongated body in its longest dimension, at the rear end of the body.

[0042] According to one embodiment, the truncated front end 135 is very thin. Preferably, it has a width between 0.5 cm and 2 cm, increasing patient comfort when the pelvis is positioned under the patient's back.

[0043] In this disclosure, the terms "rear" and "front" of the bedpan are defined in relation to the patient's body when it is positioned under the patient by the healthcare staff. Thus, in order to insert the bedpan under the patient's buttocks when the patient is lying on their back in bed, the bedpan is grasped by the healthcare staff using handle 107, which is located on the rear of the bedpan 100. The healthcare staff Next, place the basin 100, with the front end of the basin 105 closest to the patient's body and the rear end 106 furthest from the patient. The front of the basin is in front of the patient and the rear of the basin is behind the patient, on the patient's back side.

[0044] In one embodiment, the gripping handle 107 extends along the entire height of the rear end of the bedpan. The lower part of the gripping handle 107 has a rounded shape and forms a continuous surface with the elongated body, as illustrated in Figure 5. This specific shape facilitates handling by caregivers while ensuring a secure grip.

[0045] The body 101 comprises a flat bottom 120 visible in figure 6 intended to rest on the bed of the bedridden person, a vertical wall 140 extending upwards from the peripheral edge of the flat bottom 120 and a top wall 130 having a profiled front edge 131 oriented towards the front of the basin and a concave rear edge 132 oriented towards the front end of the basin 100. The bottom 120 and the vertical wall 140 thus together define an open reservoir 108 partially closed by the top wall 130.

[0046] The concave rear edge 132 of the upper wall 130 and a portion 146 of the upper peripheral edge of the vertical wall 140 define an opening 109 having a substantially asymmetrical oval shape with a rear part wider than the front part.

[0047] Referring to Figure 3, the upper wall 130 forms, on the one hand, a left and right lateral support surface 133G, 133D which laterally borders the opening of the pelvis 109, extending inwards towards the opening, and on the other hand, a front support surface 134 in a direction median to the lateral support surfaces. The lateral support surfaces 133G, 133D widen in width from their rear end as they meet the front support surface, thus creating the asymmetrical oval shape of the opening 109.

[0048] The upper wall 130 has a substantially asymmetrical oval shape with a truncated front end 135. The front edge 131 of the upper wall has two rounded corners to avoid injuring the patient during horizontal sliding placement.

[0049] Advantageously, the edge of the concave rear edge 132 of the upper wall 130 which delimits the opening 109 has a notch 133 (more visible in figure 4) or a hollow extending the edge of the opening inwards, thus allowing it to better fit the morphology of the patient.

[0050] In this disclosure, the term "notch" refers to a depression, meaning that a portion of the border surface is slightly lowered or hollowed out relative to the rest of the border. In Figure 4, the shape of this depression exhibits a gentle concave curvature, creating a slightly curved surface in a transverse plane. to the bed basin along axis AA of figure 3. This depression is distributed over the entire edge of opening 109.

[0051] The presence of this notch or depression improves comfort by providing a gently sloping and curved transition with a softened end. This prevents any sharp, traumatic edges for the patient and improves comfort around the thighs, particularly for larger patients. Furthermore, this slightly curved and contoured shape facilitates the gliding of the bedpan under the patient's lumbar spine, while maintaining maximum contact with it. This prevents discomfort caused by a vacuum, which would increase pressure on the sacrum and thus worsen the patient's condition. Therefore, this ergonomic shape reduces pain, prevents pressure sores, and improves comfort for patients of all body types who are bedridden with the bedpan according to the invention.

[0052] In one embodiment, the width of the notch 133 varies along the edge. In the example shown in Figure 3, the width of the notch decreases from a central area of ​​the edge towards the rear of the basin. In another embodiment, the width of the notch 133 can be constant. The width of the notch can range from 1 cm to 40 cm, preferably from 1 cm to 30 cm.

[0053] The free edge of the upper wall is extended by a rounded return downwards, thus forming a bead of round section to avoid injuring the patient's skin.

[0054] When the basin is installed under the patient, the patient's weight is optimally distributed over the three support surfaces 134, 133G, 133D.

[0055] In addition, the presence of support surfaces all around the opening allows for a more comfortable seating experience for the patient.

[0056] Finally, the presence of the left and right lateral support surfaces 133G, 133D which extend into the opening makes it possible to form a substantially horizontal barrier around the opening 109. They thus make it possible to improve the retention of the contents in the basin reservoir and to prevent splashing outwards when removing the basin.

[0057] In addition, the presence of these left and right lateral support surfaces 133G, 133D improves comfort at the thigh level, particularly for people of larger build.

[0058] With reference to Figures 4 and 6, the vertical wall 140 is formed by a pair of opposing side wall portions 143, 144, a front end wall portion 141 and a rear end wall portion 142. The four wall portions meet to define the continuous vertical wall 140. As illustrated in figures 4 and 6, the joining areas between the four portions of the vertical wall have a rounded convex shape, making it easier to clean and preventing injury to the patient's skin by contact.

[0059] With reference to Figure 5, the junction area 121 between the upper wall 130 and the upper edge of the vertical wall 140 has a rounded convex shape, allowing for easier cleaning.

[0060] Advantageously, the junction area 121 between the lower edge of the vertical wall 140 and the peripheral edge of the bottom 120 has a convex rounded shape, making it easier to clean.

[0061] Referring to Figure 7, which is a longitudinal section of the basin 100, the height H2 of the rear end lateral wall portion is greater than that H1 of the front end lateral wall portion. Therefore, the upper wall 130 is inclined from back to front relative to the bottom 120, with the narrow front section facing forward. Thus, the front of the basin is lower and narrower than the rear, giving it a streamlined shape that allows caregivers to more easily slide the basin under the patient's body.

[0062] Nevertheless, the height H1 of the front end lateral wall portion 141 is sufficient to form a convex rounded edge to facilitate cleaning. Furthermore, the height and thickness of the vertical wall are sufficient to give the pelvis the rigidity necessary to withstand the patient's weight without deforming.

[0063] The profile of the upper wall 130 in the longitudinal plane is designed to follow the curvature of the patient's lumbar region, forming a rounded convex part 136 in the rear and a hollow part 137 in the front part which descends.

[0064] According to one embodiment, the support surfaces of the bedpan, namely the lateral support surfaces 133G, 133D and the front support surface 134 intended to be in contact with the patient's skin, may have non-rough patterns, allowing to limit the adhesion of the skin with said surfaces, and thus facilitate the removal of the bedpan after use.

[0065] The support surfaces all around the opening of the bedpan of the present invention provide comfort of use for patients, while ensuring good retention of the contents in the reservoir and avoiding the risks of contact with the contents.

[0066] The streamlined shape of the basin makes it easier to install and remove the bedpan.

[0067] The outwardly convex rounded shape at the junction areas of the different parts of the basin allows for efficient cleaning, even in the front part of the basin which has a low height.

[0068] The 100 bedpan can be manufactured by thermoforming, plastic injection molding, or 3D printing. Alternatively, it can be manufactured by rotational molding. The material used for the bedpan is chosen for its resistance to chemical attack from cleaning products and its resistance to steam cleaning. The material used for the 100 bedpan must also be biocompatible.

[0069] The 100 bed basin can be made from a biocompatible material chosen from polymers such as polypropylene (PP), polyethylene (PE), homopolymer polypropylene Grade 12, polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA), or trimethyl carbonate.

[0070] The 100 bed basin can be made from a biocompatible material chosen from ceramic biomaterials such as alumina or Bioglass.

[0071] In a preferred embodiment, the bed basin 100 is made of polypropylene (PP) or polyethylene (PE).

[0072] In one embodiment, the bedpan 100 is used with a flexible container, such as a bag, placed in the open reservoir 108 and removably fixed in the open reservoir 108.

[0073] The bags may have a drawstring that goes under the bedpan and is pulled to hold the bag in place. Removing the bag involves loosening the drawstring to pull it out and then closing the bag with the drawstring. Using a bag prevents direct contact between feces and urine and the bedpan, ensuring hygiene and facilitating cleaning. In some models, the inside of the bag may be lined with an absorbent material to minimize spillage and odors. Finally, using a bag ensures safety by reducing the risk of leakage during transport.

Claims

Demands

1. Bedpan (100) comprising an elongated, shovel-shaped body (101) extending between a rear end (106) and a front end (105), a gripping handle (107) disposed in the rear end (106), said body comprising: - a flat bottom (120); - a vertical wall (140); - an upper wall (130) having a profiled front edge (131) oriented towards the front of the basin and a concave rear edge (132) oriented towards the front end of the basin (100); - the bottom (120) and the vertical wall (140) thus together defining an open reservoir (108); - said reservoir being provided with an opening (109) delimited by the concave rear edge (132) of the upper wall (130) and a portion (146) of the upper peripheral edge of the vertical wall (140); - the upper wall (130) forming two lateral support surfaces (133G, 133D) bordering laterally the opening of the pelvis (109) extending towards the inside of the opening (109) and a front support surface (134) in a median direction to the lateral support surfaces so that when the pelvis is installed under the patient, the weight of the patient is optimally distributed over the three support surfaces (133G, 133D, 134).

2. Bedpan according to claim 1, wherein the edge of the concave rear edge (132) of the upper wall (130) has a notch (133).

3. Bedpan according to any one of claims 1 to 2, wherein the upper wall (130) has a substantially asymmetric oval shape with a truncated front end (131), the front edge of the upper wall having two rounded corners.

4. Bedpan according to any one of the preceding claims, wherein the free edge of the upper wall (130) is extended by a rounded return downwards, thus forming a rim of round section to avoid injuring the patient's skin.

5. Bed basin according to any one of the preceding claims, wherein the vertical wall (140) is formed of a pair of opposing side wall portions (143, 144), a front end wall portion (141) and a rear end wall portion (142), the four wall portions joining by connecting areas having a rounded shape convex outwards.

6. Bed basin according to any one of the preceding claims, wherein the lower edge of the vertical wall (140) and the peripheral edge of the flat bottom (120) are joined by a junction zone (121) having a rounded shape convex outwards.

7. Bedpan according to any one of the preceding claims and claim 5, wherein the front end side wall portion (141) has a rounded shape convex outwards.

8. Bedpan according to any one of the preceding claims and claim 5, wherein the height H2 of the rear end side wall portion (142) is greater than that H1 of the front end side wall portion (141) so that the upper wall (130) is inclined from the rear to the front relative to the bottom (120).

9. Bedpan according to any one of the preceding claims, wherein the profile of the upper wall (130) in the longitudinal plane is designed to conform to the curvature of the lumbar part of the patient, forming a rounded convex part (136) in the rear part and a hollow part (137) in the front part.

10. Bedpan according to any one of the preceding claims, wherein the lateral support surfaces (133G, 133D) and the front support surface (134) intended to be in contact with the patient's skin have asperities, making it possible to limit the adhesion of the skin with said surfaces, and thus facilitate the removal of the bedpan after use.

11. Bedpan according to any one of the preceding claims, wherein the bedpan is made in one piece.

12. Bedpan according to any one of the preceding claims, wherein the bedpan is made of a biocompatible material selected from the following list: polypropylene (PP), polyethylene (PE), homopolymer polypropylene Grade 12, polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA), or trimethylcarbonate.

Citation Information

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