Stair climbing

About: Stair climbing is a research topic. Over the lifetime, 1610 publications have been published within this topic receiving 30504 citations.

Fall prevention walking stick facilitating stair climbing

Abstract: The invention discloses a fall prevention walking stick facilitating stair climbing. The fall prevention walking stick includes a main body rod, an armrest, a floor climbing auxiliary mechanism and afall alarming mechanism. The floor climbing auxiliary mechanism is fixedly connected to the end of the main body rod, and the fall alarming mechanism is arranged in a hollow cavity of the main body rod; and the floor climbing auxiliary mechanism is composed of a supporting column, a cushion block, a vertical screw block and a transverse screw block, the top end of the supporting column is fixedlyconnected to the tail end of the main body rod, the vertical surface and the transverse surface of the cushion block are each provided with a through hole, the vertical screw block is fixedly connected to the vertical surface of the inner side of the cushion block, the position of the vertical screw block corresponds to the position of the through hole on the vertical surface of the cushion block,the transverse screw block is fixedly connected to the transverse surface of the inner side of the cushion block, and the position of the transverse screw block corresponds to the position of the through hole on the transverse surface of the cushion block. The fall prevention walking stick facilitating stair climbing has the advantages of simple structure, easy operation, multiple functions, safety and effectiveness.

Stair climbing wheelchair with stable gravity center

Abstract: The invention discloses a stair climbing wheelchair with a stable gravity center. The stair climbing wheelchair comprises a wheelchair support, wherein the wheelchair support comprises a traveling support, a seat support and an armrest support, the seat support is arranged above the traveling support and can slide in the traveling direction of the traveling support in a reciprocating mode through a transmission mechanism, the armrest support is fixedly connected to the back side of the traveling support, planet wheels are arranged on the two sides of the traveling support, and the transmission mechanism enables the gravity center of the wheelchair support to change along with the change of the gravity centers of the planet wheels during stair climbing. According to the stair climbing wheelchair, the gravity center of the wheelchair support can change along with the change of the gravity centers of the planet wheels, so that the burden of people who push or support the wheelchair is relieved during stair climbing, potential safety hazards are reduced, and stair climbing efficiency and safety are improved.

Taxonomy of Stair-Climbing Mechanisms for Wheelchairs

Abstract: Autonomous climbing mechanisms have been present for over a couple of decades now, and it has been a part of various equipment such as wheelchairs, agricultural robots, rescue robots, etc. A centralized database of all existing stair-climbing mechanisms for wheelchairs can aid in selecting the appropriate one for the subjective terrain and/or finalizing the direction of additional research and design. This systematic literature review on autonomous climbing mechanisms for applications such as crossing obstacles, stair climbing, as well as climbing over/onto higher platforms, etc. assesses parameters such as climbing efficiency, power efficiency, stability, etc. This also initiates a centralized all-inclusive classification for existent robotic climbing mechanisms. By identifying commonly used components such as different ‘link and joint’ types as well as the nature of motion performed by the mechanism while climbing, different mechanisms are broken down into categories such as ‘Wheeled, Legged, Hybrid’. These are further broken down into ‘2-spoked, 3-spoked, etc… up to n-spoked and ∞-spoked’ with consideration to the parts interfering with the obstacle surfaces. Additionally, based on the nature of motion, such as continuous, periodic intermittent, sporadic, and hybrid, another aspect which is the nature of resultant motion is added to the classification. The control systems Used for different mechanisms are also a matter of concern for this review as it becomes a differentiation factor while categorizing into subdivisions under a hierarchical system. Some mechanisms can be controlled numerically, some receive their limitations on movement based on electronic signals received from the set of sensors used onboard, while some of them get limited by mechanical stoppers or limiters added from the early design stage. With the increasing acceptance and appreciation of robotic equipment in the rescue and safety section, the evaluation of climbing mechanisms for the availability of fail-safes and recovery majors is also considered a factor. This review introduces a categorical structure to the classification of autonomous climbing mechanisms which can be used efficiently while selecting a climbing mechanism for a given set of requirements, or tasks.

Pos0804-hpr investigation of the validity and reliability of the step up and down test in patients with total knee arthroplasty surgery

Abstract: Stair climbing has been showed as the first changing activity in patients with knee osteoarthritis (KOA) [1]. Stair climbing and step tests of patients with KOA are used as measurement tools to determine the functional level of patients and to determine the effectiveness of treatment. Patients with KOA undergoing total knee arthroplasty (TKA) show asymmetrical patterns and slower climbing stairs when the affected limb is compared to the healthy limb [2]. Therefore, unilateral evaluation of the extremity undergoing TKA is important. There are many tests that evaluate stair climbing function in patients with TKA. However, the Step Up and Down (StUD) test, which was previously found to be valid and reliable in knee osteoarthritis, is a 15-second test that can evaluate the affected limb unilaterally, requires only one stair, and is similar to the daily living activities of the patients [3]. For this reason, it would be useful to use it as a criterion in the evaluation of the physical functions of individuals with TKA. However, there is no study on the validity and reliability of the StUD test in patients with TKA.The aim of the study is to measure the validity and reliability of the StUD test in patients with TKA.Forty patients (Mean age; 6,87 ± 8,01) with primary TKA included in this study. The test-retest reliability of the StUD test was measured with a 1-hour interval to prevent fatigue. Validity was assessed by testing predefined hypotheses. Therefore, the 30s Chair Stand Test (30sCS), the Hospital for Special Surgery score (HSS) and Short Form-12 Quality Life Questionnaire (SF-12) were used as comparator instruments.The StUD test showed good correlation with 30sCS test (r=0,706, p<0,001), moderate to low correlation with HSS score (r=0,4, p<0,001), moderate correlation with SF12 score (r=0,508, p<0,001). Test-retest reliability was excellent (ICC= 0,93, %95 CI= 0,87-0,96). Standard error of measurement and smallest real difference at the 95% confidence level for StUD test were respectively 0,34 and 0,94. There was no significant difference in the mean VAS scores measured after the tests or between the first and the second trials (p >.05)According to the results of our study the StUD test excellent reliability, good validity and high sensitivity in patients with TKA. Additionally, there was no significant increase in pain levels at the end of the test. This result suggests that StUD test can be used the safely without increasing pain levels, and this test can also be tolerated by patients with TKA. The SRD95of StUD test was 0,94. According this, it can be interpreted that the STUD test can be used reliably to monitor small changes in patients’ function.[1]Gonçalves GH, Selistre LFA, Petrella M, Mattiello SM. Kinematic alterations of the lower limbs and pelvis during an ascending stairs task are associated with the degree of knee osteoarthritis severity. Knee. 2017;24(2):295-304.[2]Pozzi F, Snyder-Mackler L, Zeni J Jr. Relationship between biomechanical asymmetries during a step up and over task and stair climbing after total knee arthroplasty.Clin Biomech. 2015;30(1):78-85.[3]Almeida GPL, Monteiro IO, Dantas RGO, Tavares MLA, Lima POP. Reliability, validity and responsiveness of the Step Up and Down (StUD) test for individuals with symptomatic knee osteoarthritis.Musculoskelet Sci Pract. 2021; 56:102454.NIL.None Declared.