Abstract: A hollow tubulous composite structure and method for prosthetic limbs is described.

Abstract: Systems and methods for manual gesture recognition to control prosthetic devices. Low encumbrance systems utilizing glove-based recognition to control prosthetic devices. Prosthetic control systems and methods are also provided utilizing elements for application on the user's fingernails.

Abstract: Prosthetic implant devices and related methods are provided. The prosthetic implant devices includes an internal component and an external component. The internal component has an implant portion associated with one or more rare earth magnets. The internal component being of a size and shape suitable for surgical implantation into the residual limb of the amputee. The implant portion being of a size and shape suitable for surgical implantation into a bone within the residual limb of the amputee. The one or more rare earth magnets generating at least one magnetic field. The external component having a prosthetic connection associated with a magnetic element. The magnet element being in adaptable magnetic association with the at least one magnetic field generated by the one or more rare earth magnets.

Abstract: Embodiments are directed to radiopaque implantable structures (e.g., stents) formed of cobalt-based alloys that comprise cobalt, chromium and one or more platinum group metals, refractory metals, precious metals, or combinations thereof. Platinum group metals include platinum, palladium, ruthenium, rhodium, osmium, and iridium. Refractory metals include zirconium, niobium, rhodium, molybdenum, hafnium, tantalum, tungsten, rhenium, and precious metals include silver and gold. In one embodiment, the one or more included platinum group or refractory metals substitute at least partially for nickel, such that the alloy exhibits reduced nickel content, or is substantially nickel free. The stents exhibit improved radiopacity as compared to similar alloys including greater amounts of nickel.

Abstract: A plaque tack can be used for holding plaque against blood vessel walls such as in treating atherosclerotic occlusive disease. The plaque tack can be formed as a thin, annular band for holding loose plaque under a spring or other expansion force against a blood vessel wall. Focal elevating elements and/or other features, such as anchors, can be used to exert a holding force on a plaque position while minimizing the amount of material surface area in contact with the plaque or blood vessel wall and reducing the potential of friction with the endoluminal surface. This approach offers clinicians the ability to perform a minimally invasive post-angioplasty treatment and produce a stent-like result without using a stent.

Abstract: A stent device delivery system and method of making. The stent device delivery system includes a stent device, an outer sheath overlaying the stent device in a radially compact, delivery configuration of the stent device, and an inner catheter extending axially and radially within a lumen of the stent device. The inner catheter provides a stent bed upon which the stent device is located so that a radially inner surface of the stent device engages a radially outer surface of the stent bed. The stent bed may define an inwardly tapering profile, narrowing in radius from a distal portion of the stent device to a proximal portion of the stent device.

Abstract: A stent device delivery system and method of making. The stent device delivery system includes a stent device, an outer sheath overlaying the stent device in a radially compact, delivery configuration of the stent device, and a pull member. The outer sheath may include a first layer and a reinforcement layer that are laminated together, a portion of the pull member captured radially between the first layer and the reinforcement layer. At least a partial length of the captured portion of the pull member may be formed with a varying radial profile.

Abstract: A catheter device having a shaft that extends from a proximal end to a distal end to carry on its distal end a self-expanding implant for intraluminal advance on a guidewire and delivery of the implant to an implant site by proximal withdrawal of a sheath that lies radially outside the implant in the catheter, the catheter including a first shaft element to pull the sheath proximally and a second shaft element to push the implant distally to prevent the implant moving proximally with the sheath when the sheath is pulled proximally, wherein the second shaft element carries a stopper for abutting the implant, the stopper including proximal and distal portions having different radiopacities.

Abstract: A banded support system configured to induce a windlass mechanism in a foot includes a forefoot portion configured to enclose at least a portion of a forefoot of the foot, and a band coupled to the forefoot portion. The band includes a first end extending from the forefoot portion in a first orientation, and a second end extending from the forefoot portion in the first orientation. The first end is positioned proximate the second end such that the band is substantially U-shaped. The band further includes a midpoint positioned between the first and second ends in a second orientation perpendicular to the first orientation.

Abstract: Disclosed herein is a finger sleeve support apparatus configured to restrain relative movement between two fingers on the hand of a wearer such that protection is afforded to the restrained fingers in certain types of activities.

Abstract: An orthotic device comprising a plurality of posterior dynamic struts and a posterior multiple strut engager, wherein the plurality of posterior dynamic struts comprises a first posterior dynamic strut and one or more additional posterior dynamic struts, and wherein the posterior multiple strut engager is affixed to the first posterior dynamic strut and is adapted to restrain the movement of said one or more additional posterior dynamic struts, and wherein the posterior multiple strut engager may be adjusted to engage said one or more additional posterior dynamic struts in combination with the first posterior dynamic strut, thereby forming a single posterior dynamic strut assembly of greater rigidity than the first posterior dynamic strut alone.

Abstract: An external ankle brace for restricting movement of an ankle in a first direction and permitting movement of the ankle in a second direction includes a rigid heel enclosure having a rear portion and a forward portion. A lateral upright extension is perpendicular to the rigid heel enclosure and is attached to the lateral sidewall. A medial upright extension is perpendicular to the rigid heel enclosure and is attached to the medial sidewall. At least a chosen one of the lateral and medial upright extensions is selectively pivotally attached to a corresponding lateral or medial sidewall and includes a pivot prevention feature configured to selectively prevent pivoting of the chosen one of the lateral and medial upright extensions with respect to the corresponding lateral or medial sidewall.

Abstract: A method and apparatus for applying pressure to the abdomen of a patient to facilitate the insertion of a colonoscope is characterized by the use of a tensile compression device in the form of an elastic band which is wrapped around the patient's abdomen and secured in place. The tension of the band is adjusted to apply a desired degree of pressure to the patient's abdomen to reduce loops in the patient's colon so that the colonoscope can be fully inserted into the colon with minimal discomfort to the patient. The ends of the device are connected together when the desired degree of tension is obtained so that constant pressure and support are provided to the patient's colon. Addition pressure can be manually applied simultaneously with the pressure from the tensile device to reduce or eliminate more distal loops in the colon.

Abstract: A urine capturing system for capturing leaked urine from a penis includes an article of clothing that may be worn thereby facilitating the article of clothing to cover genitals. A sheath is provided and the sheath may be selectively worn on a penis. The sheath is comprised of a fluid impermeable material. The sheath inhibits urine leaking outwardly of the penis from contacting the article of clothing. Thus, the sheath inhibits the article of clothing from becoming visibly wet from the leaked urine.

Abstract: An implanted tongue pulling device including a pull plate, a pull line, a retractor and a method thereof are provided. The tongue pulling device is implanted in the mandible and tongue of a human body, respectively, for tightening the tongue dorsum and/or the tongue base for treating obstructive sleep apnea/hypopnea syndrome (OSAHS). At least three pull lines are used for positioning the pull plate, which is a flat object implanted beneath the tongue dorsum and/or the mucous membrane of the tongue base and includes through holes for the growth of tissues and pull line fixing mechanisms. The pull line includes a draw line and a sleeve. The retractor includes a casing, a control switch and a pull line fixing device mounted on the casing. A patient after surgery can adjust the tightening extent of the implanted tongue pulling device by pressing the skin outside the control switch, thereby preventing OSAHS.

Abstract: Devices and method for occluding a fallopian tube. The devices, in one embodiment, may include a plurality of expandable occluding members coupled by respective dissolvable connecting members.

Abstract: The purpose of the disclosed thermostat is to prevent age-related diseases, induced by long term cool indoor temperatures. As people age, the body produces progressively less heat while aging-impaired vasoconstriction results in progressively more heat being lost. This age-induced cold stress requires ever greater use of vasoconstriction or behavior to maintain the body's heat balance. When behavioral regulation becomes diminished with age, vasoconstriction becomes progressive throughout life. In at risk elderly, an ongoing mild indoor cold stress can unknowingly maximize negative feedback vasoconstriction leaving it unable to further defend core body temperature. Before hypothermia occurs, positive feedback vasoconstriction activates as a defense mechanism. Like inflammation and fever, this beneficial defense mechanism can also cause harm when its use becomes excessive.

Abstract: A temperature control system (300) comprising a first peripheral fluid circuit (312) for the passage of a first heat exchanger fluid. The first peripheral fluid circuit (312) comprises a first fluid connection (314) for fluidly connecting a first peripheral heat exchanger (310) in series with a first peripheral-evaporator heat exchanger (316). There is also provided a first peripheral pump (318) for pumping the first heat exchanger fluid around the first peripheral fluid circuit (312). There is also provided a first evaporator circuit (320) for the passage of an evaporator heat exchanger fluid through the first peripheral-evaporator heat exchanger (316). The first evaporator circuit (320) comprises a first evaporator pump (322) for pumping the evaporator heat exchanger fluid around the first evaporator circuit (320). The first evaporator circuit (320) is fluidly isolated from the first peripheral fluid circuit (312).

Abstract: A heated mask assembly includes a pouch that may be worn on a user's face. The pouch is comprised of a fluid absorbent material such as cotton or the like. Thus, the pouch may be soaked with a heated fluid. A heat pack is removably positioned in the pouch. The heat pack may be heated thereby facilitating the heat pack to provide heat therapy to the user's face when the pouch is worn. The heat pack provides heat therapy to the user's sinus cavities. A strap is coupled to the pouch. The strap may be wrapped around the user's head thereby facilitating the pouch to be retained on the user's face.

Abstract: A sportswear cooling system for enhancing physical activity for a wearer is provided which has a first compartment containing a cooling solution and a second compartment containing water. The first compartment is positioned within the second compartment and the walls of the first compartment are adapted to be ruptured so that when the cooling solution and water combine an endothermic reaction is produced calculated to cool a portion of the body upon application.

Abstract: A micro forceps 12 according to the present invention comprises: a housing 22 having an opening part 27 on a side 23 thereof; a rotating body 32 that is retained in the housing 22, rotatable around a long axis of the housing 22, and partially exposed from the opening part 27; a clip part 52 for clipping an object; a wire rod part provided with the clip part 52 on one side, and connected to the rotating body 32 on the other side; an opening/closing operation part 62 that is retained in the housing 22, movable along the long axis direction of the housing 22, and partially exposed from the opening part 27; and a tubular part 72 connected to the opening/closing operation part 62; wherein the clip part 52 is in a closed state where the clip part 52 is placed in the tubular part 72 when the opening/closing operation part 62 is moved to a clip part 52 side; and the clip part 52 is in an opened state where the clip part 52 comes out of the tubular part 72 when the opening/closing operation part 62 is moved to opposit

Abstract: A drug delivery device includes a drug-eluting element defined by a plurality of outer surfaces including a delivery surface and one or more other non-delivery surfaces. The delivery surface is positioned against tissue of an eye and shaped to define an area of targeted tissue to receive a drug. The drug-eluting element holds the drug when the delivery surface is not positioned against the tissue. Responsive to the delivery surface being positioned against the tissue, the drug-eluting element releases the drug to the area of targeted tissue through the delivery surface. The drug delivery device includes one or more barrier structures disposed along the one or more non-delivery surfaces of the drug-eluting element. The one or more barrier structures substantially inhibit release of the drug from the drug-eluting element through the one or more non-delivery surfaces.

Abstract: A treatment system for ophthalmic purposes with a base body and an articulated arm with an applicator for applying an examination or treatment to a patient's eye, which includes a locking device for the secure storage of the articulated arm.

Abstract: A steerable laser probe may include a handle having a handle distal end and a handle proximal end, an auto-fixing actuation control, a flexible housing tube having a flexible housing tube distal end and a flexible housing tube proximal end, a first flexible housing tube portion having a first stiffness, and an optic fiber disposed within an inner bore of the handle and the flexible housing tube. An actuation of the auto-fixing actuation control may gradually curve the flexible housing tube. A gradual curving of the flexible housing tube may gradually curve the optic fiber.

Abstract: A planning device for a scanning pattern of a closed structure in an eye, an ophthalmic laser treatment device and corresponding methods including a scanning pattern of a closed structure in a tissue of a patient's eye in a single-pass method for the control of an ophthalmic laser treatment device, in which a starting point of the macroscopic scanning pattern which contains the scanning pattern is arranged in a region in which the angle between a direction of progress of the macroscopic scanning pattern and a direction of a maximum offset caused by movements of the eye relative to the ophthalmic laser treatment device is minimal, or in a region of a minimum change in the macroscopic scanning pattern (n the z-direction per unit of time, or in a region in which a direction of progress of the macroscopic scanning pattern is parallel to a direction of maximum offset.

Abstract: Methods and devices for providing a gas pathway between the nasopharynx and the Eustachian tube are provided. One device may include a lumen with a valve. A portion of the valve may be tethered to adjacent muscle. Another portion of the valve may be tethered to adjacent cartilage. When the muscle contracts the valve may open through movement of the tethers, and provide a gas pathway between the nasopharynx and the Eustachian tube.

Abstract: A myringotomy device includes a housing; an elongated tube extending from the housing; and a retractable cutting tool extendable through the elongated tube, the cutting tool comprising a blade. The cutting tool is configured such that when advanced, the blade of the cutting tool extends beyond a distal end of the elongated tube. The cutting tool is also configured such that when retracted, the blade is retracted into the elongated tube and a fluid conduit is created from the distal end of the elongated tube to the housing.

Abstract: An ear plug support article is provided and includes an ear plug, an ear plug arm having a first ear plug arm end and a second ear plug arm end, wherein the ear plug is connected to the first ear plug arm end and wherein the second ear plug arm end includes a mounting article and an ear plug arm support, wherein the ear plug arm support is configured to attach to a brim of a hat, wherein the ear plug arm support defines an arm support cavity configured to movably and securely contain the mounting article such that the ear plug arm is movable.

Abstract: A wrap for treating wounds of a patient is disclosed. The wrap may include a first material layer and a second material layer. The wrap may also include a first pocket formed between the first material layer and the second material layer. A dressing may be located within the first pocket, between the first material layer and the second material layer and a first fluid port may extend between the first material layer to the first pocket.

Abstract: Adhesive bandages/shield/cover with at least one raised non-adhesive portion which is elevated above the at least one adhesive layer with attached water temperature gauge indicator. The raised non-adhesive portion is peripherally surrounded by an adhesive layer with attached water temperature gauge indicator and is designed to protect surgical sites and cutaneous wounds as well as any other skin malady. Neither the raised non-adhesive portions of the bandage/shield/cover nor the adhesive layer with attached water temperature gauge indicator are in contact with the cutaneous layer which is the subject of the sought protection, with the adhesive layer with attached water gauge temperature indicator coming into contact only with the area surrounding the affected site which can result in the reduction or elimination of exposure to moisture and/or contaminates, and the correct water temperature can be indicated to eliminate any scalding of the skin.

Abstract: A wound treatment system includes a housing that defines an oxygen outlet. An oxygen production subsystem is included in the housing and coupled to the oxygen outlet. A control subsystem is coupled to the oxygen production subsystem and configured to receive pressure information that is indicative of a pressure in a restricted airflow enclosure that is coupled to the oxygen outlet. The control subsystem then uses the pressure information to control power provided to the oxygen production subsystem in order to control an oxygen flow that is created by the oxygen production subsystem and provided through the oxygen outlet to the restricted airflow enclosure.

Abstract: A skin adhesive member that helps a user maintain an appropriate posture while supporting muscles on the abdominal side. The skin adhesive member extends in a length direction and is adhered from an abdominal side to a back side across a side abdomen of the user, the skin adhesive member having a foundation portion, a first extension portion extending in the length direction from one end of the foundation portion and adhered to the back side, a second extension portion extending from another end of the foundation portion and adhered to the abdominal side, wherein the first extension portion includes at least a pair of belt portions.

Abstract: An article of clothing can be used to reduce or prevent the occurrence of prolonged skin-on-skin contact, rashes, irritation, intertrigo, infections, discomfort, or chaffing. Such an article of clothing has a moisture management material made up of at least an outer layer, an inner layer, and a tab. The moisture management material is attached to a portion of the article of clothing via a tab of the moisture management material. The moisture management material may be of various shapes and sizes and preferably fits within a prescribed area of the article of clothing. The moisture management material may be variably positioned within the article of clothing to provide differing results such as additional support and/or moisture absorbing or moisture moving where necessary. Preferably the article of clothing is a brassiere but may be a shirt, diaper, pants, socks, panties, or other undergarments.

Abstract: A method for making an apertured polymeric film web is disclosed herein. The polymeric film web may be utilized as a topsheet in an absorbent article and can provide fluid handling and softness benefits.

Abstract: A method for method for fabricating an absorbent article is disclosed. The absorbent article comprises at least a topsheet and a liquid impermeable backsheet. The method provides for the steps of: a) supplying the topsheet; b) supplying the liquid impermeable backsheet; c) affixing a measuring device to one of the topsheet and liquid impermeable backsheet; and, d) contactingly engaging the topsheet and liquid impermeable backsheet so that the measuring device is disposed therebetween when the topsheet and liquid impermeable backsheet are disposed in contacting engagement.

Abstract: Excretion by a diaper wearer in a diaper is predicted by providing in or on the diaper on the wearer an excretion detector capable of detecting excretion by the diaper wearer and a motion sensor capable of detecting movements of the diaper wearer. The sensor continuously detects and at least temporarily records movements of the diaper wearer, and these detected movements are analyzed to determine movement patterns. Then, on detection of excretion by the detector, a movement pattern immediately preceding the detection of excretion is stored or flagged as a critical movement pattern. Thereafter each time movements matching the critical movement pattern are detected, a signal is sent to a user.

Abstract: An incontinence garment for wear by a user is provided. The user has an anatomy. The incontinence garment comprises a protective undergarment having a waist opening and a pair of leg openings. An opening is formed in the protective undergarment approximately centered between the leg openings for accommodating the wearers anatomy. An outer garment is positionable over the protective undergarment with the outer garment having a waist opening and a pair leg openings and the outer garment being free from any other openings. The combined protective undergarment and outer garment offers a dual layer of absorbent protection.

Abstract: An elastomeric laminate is extensible in a first direction and has a first laminate surface; a second laminate surface substantially opposite the first laminate surface; and a laminate thickness, T, extending between the first and second laminate surfaces. A pre-SELFed coverstock layer forms the first laminate surface. The pre-SELF coverstock layer has a primary activation pattern, wherein the primary activation pattern includes SELF-specific land areas that extend in the first direction and one or more activation thicknesses. Each activation thickness is less than the laminate thickness, T. The elastomeric laminate also has an elastomeric layer joined to the pre-SELFed coverstock layer. The elastomeric layer forms the second laminate surface. The elastomeric laminate may be a zero strain laminate, a gathered laminate, or a hybrid gathered laminate.

Abstract: The present invention is intended to make the deformation of the absorber at the crotch portion less prone to influence the waist side of the absorber and allow the waist side of the absorber to be easily rounded along the surface of the wearer's body. The foregoing issue is solved by a disposable diaper including an absorber in a crotch portion, a ventral-side portion, and a dorsal-side portion, wherein the absorber is divided in a front-back direction by width-direction slits continuing in the width direction provided on both front and back sides of the crotch portion, and concave portions recessed toward the waist side are formed in width-direction centers of waist-side edges of the width-direction slits.

Abstract: An absorbent article according to the present invention having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet includes a first recessed portion configured in a top surface of the absorber facing the top sheet and extending along a first direction and a second recessed portion configured in the top surface of the absorber facing the top sheet so as to intersect the first recessed portion, the second recessed portion extending along a second direction different from the first direction. The first recessed portion and the second recessed portion each have a first area having a shallow depth from the top surface of the absorber to a bottom surface of the first area and a second area having a deeper depth than the first area.

Abstract: A method of making an absorbent composite that includes a first fabric, a second fabric, and particles positioned between the two fabrics and absorbent articles made from the absorbent composite. The particles are secured between the two fabric using adhesive, thermal plastic or combinations thereof. The fabrics are bonded together in a manner that limits particle movement between the fabrics. The bond pattern may define pockets or other shapes. In applications in which the bond pattern forms pockets, the particles may be positioned in the pockets. The particles may be SAP particles or other particles with advantageous properties.

Abstract: A tampon system comprising a tampon and an outer package is disclosed. The tampon consists of an absorbent member, a gripping member, a non-absorbent tether connected to the absorbent member and the gripping member, and a substantially sealable pouch. The substantially sealable pouch and the tampon are contained within the outer package. The outer package may be sealed and biodegradable.

Abstract: There is provided an extendable and retractable gurney mountable to a rescue vehicle and configured to receive and hold a rescue basket thereon. The gurney has a base for fixed mounting to a floor area of the rescue vehicle. The gurney has a rescue basket cradle that slides (relative to the base) outward from a stowed configuration on a rescue vehicle to an extended configuration to receive a rescue basket, and then moves back inward to a stowed configuration in the emergency vehicle. Rollers are arrayed along a side of a longitudinally extending slat to facilitate rolling contact with an underside of a rescue basket, when it is placed on the cradle, thereby allowing the basket to be readily moved into appropriate position on the cradle for securing it to, and immobilizing it on, the gurney.

Abstract: A motor vehicle for independent use by an individual in a wheelchair, comprising an open air vehicle body including a floor further comprising a front, a rear, and lateral sides, said floor sized and shaped to receive and retain a wheelchair; a motor; at least one front and at least one rear wheel supporting said vehicle body and floor, each of said front and rear wheels attached rotatably near an underside of a corner of the vehicle body; at least one actuator attaching said floor to said at least one rear wheel, wherein said floor can be lowered to a ground surface and raised to a level floor position; wherein a rear portion of said floor is structured to fold upward to form said rear side and fold downward to be in line with said floor; and a steering control assembly coupled to said at least one front wheel.

Abstract: Securing system for wheelchairs in vehicles, comprising a rigid bottom frame provided with; —a number of fixation means which are connected to the if bottom frame and suitable for fixing a wheelchair relative to the bottom frame, wherein each fixation means comprises a coupling element configured for coupling to a wheelchair, which coupling element is connected with a cable to a retractor, which retractor in unlocked mode exerts a retracting pulling force on the coupling element while the cable can be pulled out, and in locked mode locks the cable so that it cannot be pulled out, wherein the retractors are fixedly connected to the bottom frame and are preferably placed adjacently of each other, and a central securing control for simultaneous operation of the retractors.

Abstract: The present invention relates to a foldable wheelchair (10) comprising two side frame components (11a, 11b), respectively a left and a right side frame components, each mounting front and rear wheels (12a, 13a; 12b, 13b), respectively left and right, front and rear wheels, said rear wheels (13a, 13b) having an axis of rotation (XX?), said side frame components (11a, 11b) being connected together for relative folding movement between an erected position and a folded position by foldable link element (20) extending between said two side frame components (11a, 11b), wherein the left, respectively the right, side frame component (11a, 11b) comprises a T-shaped bracket (17), along which is connected both a rear wheel suspension (19) of the left, respectively the right, rear wheel (13a, 13b) and a left, respectively a right, end (21a, 22b) of the foldable link element (20), wherein the position of T-shaped bracket (17) is adjustable along the back-to-front direction of the wheelchair so as to permit the adjustment

Abstract: The present invention provides a wheelchair transfer handrail for use in connection with a wheelchair and a door striker on a vehicle pillar. The invention includes a clamp assembly connected to the wheelchair, and a handrail tube extending from the clamp assembly to the door striker.

Abstract: The present disclosure relates to a chassis arrangement (1) for an electrically powered wheelchair (35). The chassis arrangement (1) comprises a main chassis member (3) having a first side panel (3a) defining a first side of the main chassis member (3), and a second side panel (3b) defining a second side of the main chassis member (3), the second side being opposite to the first side, wherein each of the first side panel (3a) and the second side panel (3b) has spring attachment arrangements (3g, 3h) for attachment of spring assemblies (9a, 9b, 11a, 11b), wherein each of the first side panel (3a) and the second side panel (3b) has pivot arm attachment arrangements (3e, 3f) for attachment of pivot arms (5a, 5b, 7a, 7b), wherein the main chassis member (3) has a torsional stiffness greater than 1200 Nm/degree. An electrically powered wheelchair comprising a chassis arrangement (1) is also presented herein.

Abstract: An armchair comprising a seat chassis supported on a support chassis by a pair of support columns, a chair back structure pivotally attached to a rear end of the seat chassis and to the support chassis, and a leg support structure pivotally attached to a front end of the seat chassis and connected to a beam, wherein the beam is attached the chair back structure. A first actuating device is mounted to the chair back, where a protracting end of the first actuating device is connected to the seat chassis. The armchair further comprises a second actuating device mounted to the support chassis, a footrest connected to a protracting end of the second actuating device, a third actuating device attached to the seat chassis, and a seating structure connected to a protracting end of the third actuating device and mounted above the seat chassis, wherein the seating structure includes an operative position projecting upwards and forwards by the third actuating device at a tilting angle from the seat chassis.

Abstract: A seating furniture chassis having a height-adjustable seat surface, a drive means, a shaft, a height-adjustment mechanism and a threaded rod, wherein the drive means is coupled to the shaft and is designed to transmit a torque to the threaded rod by means of the shaft, and wherein the height-adjustment mechanism is coupled to the threaded rod and to the seat surface such that a rotation of the threaded rod is converted into a height adjustment of the seat surface by means of the height-adjustment mechanism, characterized in that a longitudinal axis of the shaft is not arranged parallel to a longitudinal axis of the threaded rod.