Abstract: A pump, such as a blood pump, includes a pump chamber with a wall and a fluid connection between an inlet and an outlet, along with an impeller, a motor stator, and a control coil arranged on the pump chamber for exerting, together with first rotor magnets, a controllable axial force on the rotor. A control unit provides a control current for the control coil, in order to hold the rotor in a position which is spaced apart axially from the wall of the pump chamber. A first chamber magnet is arranged close to the winding of the control coil and opposite the first rotor magnet, in order to provide, together with the first rotor magnet, a force between the first rotor magnet and the first chamber magnet, and in order to orient the rotor relative to the wall of the pump chamber.

Abstract: Apparatus and methods are described including a blood pump that includes an axial shaft configured for insertion into, and rotation within, a body of a subject. An impeller is coupled to the axial shaft such that, as the axial shaft rotates, the impeller pumps blood of the subject. A thrust bearing includes a proximally-facing ceramic surface disposed distally from the axial shaft so as to inhibit distal movement of the axial shaft beyond the thrust bearing, and a distally-facing ceramic cover that covers a distal end of the axial shaft, such that the ceramic cover contacts the ceramic surface as the axial shaft rotates. Other applications are also described.

Abstract: Apparatus and methods are described including reducing cardiac preload of a subject by partially occluding a vena cava of the subject at an infra-renal location. One or more physiological parameters of the subject are monitored, the one or more physiological parameters including lower body venous pressure, central venous pressure, central venous blood flow, renal venous pressure, cardiac diameter, cardiac volume, arterial pressure, and/or arterial blood flow. An extent to which the vena cava is occluded at the infra-renal location is modulated, responsively to the one or more physiological parameters. Other applications are also described.

Abstract: A pericardial access system includes an introducer sheath and a mandrel. The introducer sheath has a proximal end, a distal end, and a lumen extending therethrough. The mandrel has a proximal end, a distal end, end a handle at the proximal end. A wire electrode is disposed at the distal end of the mandrel, and a power supply is coupled to the wire electrode and configured to apply a short burst of energy sufficient to allow the wire electrode to penetrate a pericardial sac of a patient. The pericardial access system is used to deliver an implantable cardiac assist catheter connectable to an external drive unit. An anchor catheter is percutaneously advanced into a patient's pericardial sac and includes an anchor at its distal which may be expanded within the pericardial sac.

Abstract: The present invention relates to a medical electrode, including: a first layer made of a first material having a first electrochemical potential window, especially a first charge injection limit, and at least one second layer made of a second material having a second electrochemical potential window, especially a second charge injection limit, wherein the first layer and the second layer are located on a base substrate, wherein the second electrochemical potential window is lower than the first electrochemical potential window, and wherein the first layer is provided on top of the second layer and encapsulates the second layer, so that no electrical current directly flows from the second layer toward a target tissue.

Abstract: Described here are devices, systems, and methods for treating one or more conditions (such as dry eye) or improving ocular health by providing stimulation to nasal or sinus tissue. Generally, the devices may be handheld or implantable. In some variations, the handheld devices may have a stimulator body and a stimulator probe having one or more nasal insertion prongs. When the devices and systems are used to treat dry eye, nasal or sinus tissue may be stimulated to increase tear production, reduce the symptoms of dry eye, and/or improve ocular surface health.

Abstract: An electrical stimulation device for modulating a blood-brain barrier (BBB) of a subject includes at least one electrode configured to delivery electrical stimulation to the subject to stimulate a sphenopalatine ganglion (SPG) of the subject, and a control unit in communication with the at least one electrode. The control unit generates a first electrical stimulation signal to the at least one electrode to apply a first electrical stimulation to the subject to stimulate a sphenopalatine ganglion (SPG) of the subject thereby increasing porosity of the BBB from an initial porosity to an increased porosity, and generate, after said first electrical stimulation signal, a second electrical stimulation signal to the at least one electrode to apply a second electrical stimulation to the subject to stimulate the SPG of the subject thereby decreasing porosity of the BBB from the increased porosity to a decreased porosity that is less than the increased porosity.

Abstract: Electrical modulation provides treatment of brain tumors, such as glioblastoma. An electrical stimulus may be applied to the brain of a patient with a brain tumor (e.g., primary or metastatic brain tumor in upfront, adjuvant, or recurrent treatment setting) via bitemporal and/or unitemporal electrodes. The electrical modulation acts on brain tumor networks to slow tumor growth and increase survivability of the patient. The electrical modulation also transiently permits passage of therapeutics across the blood-brain barrier. The electrical modulation also sensitizes brain tumors to radiation therapy, immunotherapy, and chemotherapy.

Abstract: Disclosed herein a method, tin Electrical Stimulation System (ESS) 101, and an electronic wearable unit 301 for controlling an electrical stimulation 113 to a pelvic region of a subject 103. The electronic wearable unit 301 comprises a non-skin contacting outer surface 307, a skin contacting inner surface 305 with a crotch part for removably attaching a urine collecting device 309, and the ESS 101 removably placed within a space bounded by the outer surface 307 and the inner surface 305. An input 105 for initiating a session is received. Further, at least one of, an activity level 107 of muscles in and around the pelvic region, an orientation 109 of one or more of the muscles, and a body posture 111 of the subject 103 is received, throughout the session. Based on the determination, the electrical stimulation 113 to the pelvic region of the subject 103 is controlled.

Abstract: A wearable device for providing a smoking effect is provided. The wearable device includes a first stimulus member disposed in a position corresponding to a first region of a user and configured to provide electrical stimulation and a second stimulus member disposed in a position corresponding to a second region of the user and configured to provide sound stimulation, wherein the first stimulus member or the second stimulus member is configured to provide a stimulus signal that induces an alertness state capable of implementing a smoking effect.

Abstract: Systems and methods for calibration of retinal prosthetics in accordance with embodiments of the invention are illustrated. A closed loop calibration process is described whereby a multi-electrode stimulation regime can be calibrated to a given user's retina. Multi-electrode stimulation can provide increased stimulation selectivity, but significantly increases complexity. Systems and methods described herein provide computational steps that significantly reduce the amount of trials and computation required in order to achieve clinically viable selectivity, making closed-loop calibration of retinal prosthetics possible in significantly less time than open-loop calibration.

Abstract: In one aspect, the invention comprises an implantable living electrode comprising a substantially cylindrical extracellular matrix core; one or more neurons implanted along or within the substantially cylindrical extracellular matrix core, the one or more neurons including one or more optogenetic or magnetogenetic neurons proximal to a first end of the implantable living electrode.

Abstract: Selective high-frequency spinal cord modulation for inhibiting pain with reduced side effects and associated systems and methods are disclosed. In particular embodiments, high-frequency modulation in the range of from about 1.5 KHz to about 50 KHz may be applied to the patient's spinal cord region from an epidural, cervical location to address at least one of high back pain, mid-back pain, low back pain, and leg pain without creating paresthesia in the patient.

Abstract: Disclosed herein is a novel pseudoinverse estimation system and method that adapts regression techniques to directly estimate one or more pseudo inverses of a neuromodulation pathway, thereby circumventing the need of inverting an estimated forward model to design an electrical waveform that elicits a desired neural response. This is accomplished by the learning of a restricted domain that restricts the potential stimuli required to produce the desired neural response. Also disclosed herein is an adaptive, data-driven method providing a more selective design of an electrical waveform to elicit the desired neural response.

Abstract: Systems and techniques for wireless implantable devices, for example implantable biomedical devices employed for biomodulation. Some embodiments include a biomodulation system including a non-implantable assembly including a source for wireless power transfer and a data communications system, an implantable assembly including a power management module configured to continuously generate one or more operating voltage for the implantable assembly using wireless power transfer from the non-implantable assembly, a control module operably connected to at least one communication channel and at least one stimulation output, the control module including a processor unit to process information sensed via the at least one communication channel and, upon determining a condition exists, to generate an output to trigger the generation of a stimulus.

Abstract: A system may include an electrostimulator configured to provide electrostimulation to a neural target patient via electrodes on a lead, a sensing circuit configured to sense, at a plurality of sensing locations, evoked responses (ERs) to the electrostimulation, a user interface, and a controller operably connected to the electrostimulator, the sensing circuit and the user interface. The controller may be configured to deliver the electrostimulation in accordance with a stimulation setting, determine the sensed ERs to the electrostimulation delivered in accordance with a sensing setting and the stimulation setting, determine acceptance criteria using user input received via the user interface, compare the sensed ERs to the acceptance criteria to provide a comparison result, and display on the user interface an indicator of the comparison result.

Abstract: A method for adapting stimulation by a stimulation system to a change in a symptom, therapeutic effect, or side effect includes detecting a change in a symptom of a disease or disorder or in a therapeutic effect or a side effect of stimulation by the stimulation system; in response to the detecting, determining, by the stimulation system, a modification of one or more stimulation parameter values to adapt to the change in the symptom, the therapeutic effect, or the side effect; and at least one of the following: 1) suggesting to the patient or to a clinician adoption of the modification and, upon receiving affirmation from the patient or the clinician, stimulating the patient according to the modification of the one or more stimulation parameter values, or 2) automatically stimulating the patient according to the modification of the one or more stimulation parameter values.

Abstract: An Implantable Pulse Generator (IPG) or External Trial Stimulator (ETS) system is disclosed that is capable of sensing an Evoked Compound Action Potential (ECAP), and (perhaps in conjunction with an external device) is capable of adjusting a stimulation program while keeping a location of a Central Point of Stimulation (CPS) constant. Specifically, one or more features of measured ECAP(s) indicative of its shape and size are determined, and compared to thresholds or ranges to modify the electrode configuration of the stimulation program.

Abstract: A neuromodulation system comprises a plurality of electrical terminals configured for being respectively coupled to a plurality of electrodes, a user interface configured for receiving input from a user that selects one of a plurality of different shapes of a modulating signal and/or selects one of a plurality of different electrical pulse parameters of an electrical pulse train, neuromodulation output circuitry configured for outputting an electrical pulse train to the plurality of electrical terminals, and pulse train modulation circuitry configured for modulating the electrical pulse train in accordance with the selected shape of the modulating signal and/or selected electrical pulse parameter of the electrical pulse train.

Abstract: In some examples, a system can be used for delivering cardiac resynchronization therapy (CRT). The system may include a pacing device configured to be implanted within a patient. The pacing device can include a plurality of electrodes, signal generation circuitry configured to deliver ventricular pacing via the plurality of electrodes, and a sensor configured to produce a signal that indicates mechanical activity of the heart. Processing circuitry can be configured to identify one or more features of a cardiac contraction within the signal, and determine whether the contraction was a fusion beat based on the one or more features.

Abstract: A biostimulator, such as a leadless pacemaker, having electrode(s) coated with low-polarization coating(s), is described. A low-polarization coating including titanium nitride can be disposed on an anode, and a low-polarization coating including a first layer of titanium nitride and a second layer of platinum black can be disposed on a cathode. The anode can be an attachment feature used to transmit torque to the biostimulator. The cathode can be a fixation element used to affix the biostimulator to a target tissue. The low-polarization coating(s) impart low-polarization to the electrode(s) to enable an atrial evoked response to be detected and used to effect automatic output regulation of the biostimulator. Other embodiments are also described and claimed.

Abstract: A system may include a deep brain stimulation (DBS) system and an external user system. The DBS system may include a DBS lead and a DBS neuromodulator configured to use the DBS lead to deliver a DBS therapy to a patient having a neurological disorder. The external user system may include a processor and a user output configured to provide a perceptible output signal to the patient. The processor may be configured to execute a cueing application to implement a cueing routine to cue patient movement. The cueing routine may be configured to control the user output to provide the perceptible output signal.

Abstract: A connector assembly includes a base and a detachable cover. Ports on separate sidewalls receive an extension cable and a lead. A blade assembly maintains electrical contact between the cable and the lead, while providing a surface to strip insulation and/or sever the lead. Further, the blade is resilient so as to maintain sufficient contact with the lead when the cover is attached and/or locked to the base.

Abstract: A wearable medical device is provided for monitoring the cardiac health of a patient, for example, for indications of cardiac anomalies, where the device includes ECG sensors in electrical contact with the patient's body, therapy electrodes for providing electrical therapy to the patient's heart, and a control unit having at least one touch control with force sensor disposed on its housing for contacting with a finger. Signals from the touch control may be analyzed to identify force application below a first force threshold and at or above a second force threshold below the first force threshold, and, responsive to detecting such application of force, user input may be registered. User inputs to the at least one touch control may be used to delay therapy by the therapy electrodes.

Abstract: An implantable system for providing anti-tachycardia and/or shock therapy, comprising an implantable pacing device, in particular an implantable leadless pacemaker, and an implantable cardioverter defibrillator, in particular a non-transvenous implantable cardioverter defibrillator, wherein the implantable pacing device is configured to detect a tachycardia and to provide anti-tachycardia pacing, wherein the implantable pacing device is further configured to signal an unavailability of anti-tachycardia pacing to the implantable cardioverter defibrillator, and wherein the implantable cardioverter defibrillator is configured, in response to the signal of the implantable pacing device, to adjust predetermined shock therapy parameters and/or to send a message to a remote monitoring system. A computer implemented method for providing anti-tachycardia and/or shock therapy, a computer program and a computer readable data carrier are also provided.

Abstract: A wearable external defibrillator with a plurality of ECG sensing electrodes and a first defibrillator pad electrode and a second defibrillator pad electrode. The ECG sensing electrodes and the defibrillator pad electrodes are configured for long term wear.

Abstract: Proposed are an apparatus for delivering radio frequency and a control method thereof. The apparatus includes a body configured to control an overall operation, a handpiece connected to the body and configured to be operated by receiving power from the body, and a tip which is attached to a first side surface of the handpiece and which is in close contact with skin of a user. The body includes a first power source unit, a first control unit, a storage unit, an energy generation unit, and a cooling unit. The handpiece includes a second power source unit, a second control unit, an energy transferring unit, and a gas transferring unit. The tip includes a housing, an electrode unit, a data collection unit, and a chamber.

Abstract: A wearable technology, referred to herein as biometric bodysuit, which integrates biometric sensors, electromagnetic stimulation, and wireless control modules having the capacity to communicate with an interactive user interface. The body is comprised of at least one segment covering at least a portion of a body of a wearer. The segments include an arm covering, a leg covering, a torso covering, footwear, handwear, headwear, and any combination thereof. The segments include a series of control modules that relay real-time biometric data to a main control module, wherein the data is then relayed to a server and a user interface. The user interface permits wearers of the bodysuit and healthcare professionals to adjust the functionality of the bodysuit in accordance to what is the necessary therapy required by the wearer.

Abstract: Circuit wiring arrangement of a monophasic stimulator for transcranial magnetic stimulation, which comprises a stimulation capacitor (C11) connected via a switch (S) and a limiting means (Rp) to a source (U) of a stimulation energy, while the stimulation capacitor (C11) is connected in parallel with a diode (D) and with a braking resistor (R11), the braking resistor being connected in series with the diode (D); a stimulation coil (L1I) being further connected in parallel to the stimulation capacitor (C11) via a switching thyristor (T). A braking capacitor (C2) is connected in series with the diode (D) and a discharging resistor (R2) is connected in parallel to the braking capacitor (C2), wherein at least said discharging resistor (R2) is the resistor connected in series with diode (D) or a combination of this resistor with another resistor.

Abstract: A radiation source for a skin irradiation device for tanning skin, designed to emit UV light at a spectral irradiance E?(?), the spectral irradiance E?(?) being chosen such that the ratio of the NMSC-effective, biological irradiance ENMSC to the erythema-effective, biological irradiance Eer is 0.9 or less.

Abstract: A phototherapeutic footwear is provided for treating vitamin D deficiency using UVB light and red light. The phototherapy device includes a light source configured to emit UVB light to stimulate production of vitamin D by a patient's body and to emit red light to stimulate melatonin production by the patient's body. The light source and a power source are mechanically supported by a main body, such that the UVB light and red light are directed onto a skin of a patient.

Abstract: This relates to a protective casing for a dermatological treatment device that includes a laser, wherein the casing has an elongated shape that envelopes the device and forms at one end a head including an opening capable of allowing a beam fired by the laser to pass; the casing including several parts assembled together, where the head is formed from a single, part.

Abstract: A light emitting ophthalmic lens in which a light source is incorporated into a lens. The light source may be configured to emit light within a specific wavelength, such as but not limited to a blue light having a wavelength of about 470 nanometers. The ophthalmic lens may include one or more light guiding elements for directing the light emitted from the light source onto a desired region of an eye, such as the outer areas of the retina. The light source may be attached to the ophthalmic lens or may be integrated therewith. The one or more light guiding elements may be configured to reflect, diffuse, disperse, defocus, and/or diffract the light from the light source towards the eye. A control unit may both power the light source and allow for programming various functions of the light source.

Abstract: Embodiments of the present disclosure relate to the biomedical technical field, and disclose a retinal prosthesis and a visual perception method based on the retinal prosthesis. The retinal prosthesis includes: a capturing assembly, a neuromorphic processor and a light stimulator. The capturing assembly is configured to capture an external scenario and encode the captured external scenario as spike sequences. The neuromorphic processor is configured to predict spike responses of ganglion cells of an implant recipient of the retinal prosthesis according to a preset deep learning algorithm and the spike sequences. The light stimulator is configured to stimulate the ganglion cells based on the spike responses of the ganglion cells. The retinal prosthesis can further reduce the data size and the amount of computation effectively, so that the power consumption is greatly reduced on the premise of keeping a relatively high processing speed.

Abstract: The present disclosure belongs to the technical field of laser energy monitoring, and particularly, a laser energy monitor for myopia treatment device and a monitoring method are provided. The monitor comprises a laser light source, a housing, a beam shaping lens, a beam homogenizing lens, a photosensitive sensor, and a controller; wherein the housing is provided with a cavity for receiving the laser light source, beam shaping lens, beam homogenizing lens, and photosensitive sensor, the housing is also provided with a light aperture, the light aperture is communicated to the cavity, and the laser light source is positioned opposite to the light aperture; and the photosensitive sensor is electrically connected to the controller. The monitor can adjust the inner layout of the conventional housing.

Abstract: Devices, systems, and methods for combining and/or delivering an injectable material to a patient. The injectable material may be formed of two or more reactive components delivered in separate chambers. Various features are provided to reduce human error in combining the reactive components in the appropriate sequence to form the injectable material, generally at (e.g., immediately prior to) the time of delivery to a patient. The system includes a sleeve lock which facilitates coupling of a device having a first chamber containing a first component with a vial having a second chamber containing a second component to combine the first and second components. The combined first and second components are contained within the first chamber for delivery to a patient via an injection system, which may be fluidly coupled with the first chamber with the assistance of the sleeve lock.

Abstract: According to one embodiment, a particle beam control system comprising: a control computer configured to control two scanning electromagnets, wherein the control computer is configured to: calculate deviation amount between a centroid position and a spot position that is a designed irradiation position of the two scanning electromagnets; calculate at least one correction value for correcting the centroid position to the spot position by using the deviation amount; store the at least one correction value in a memory; and correct at least one current value by using the at least one correction value stored in the memory, the at least one current value being a design reference when power is supplied from at least one of two power supplies to at least one of the two scanning electromagnets.

Abstract: Disclosed herein are systems and methods for measuring the radiation emitted from the therapeutic radiation source. One variation of a radiotherapy system includes a radiation measurement device that is coupled to a radiotherapy system housing. The radiation measurement device may be movably coupled to the housing, and its position and/or motion is independent from the position and/or motion of the therapeutic radiation source. In one variation, the radiation measurement device is at a location on the system housing where it may measure exit beams with little or no interference with entrance beams. Also disclosed herein are radiotherapy systems that include one or more radiopaque or radiation emitting fiducials coupled to the housing.

Abstract: Disclosed herein are ultrasound methods utilizing various frequencies and other parameters to enhance immunotherapeutic treatments. The disclosure further provides various settings and timing for the ultrasound pulses to be delivered to a targeted region of tissue in the body.

Abstract: An ultrasonic treatment device with a large focused area includes: a housing; and an ultrasonic transducer installed inside the housing. Ultrasonic waves emitted by the ultrasonic transducer being configured to form a plurality of focused area units at one or more focused depths in a focused area, and each of the focused area units including one or more of a focused point, a focused line, a focused plane or a focused volume.

Abstract: A method for climbing and descending using an ascender including a differential reduction drive that includes an input shaft driven by a rotary power tool and an output shaft coupled to a pulley allowing a rope to be wound, reduces a forward rotational speed applied to the input shaft, and transmits the reduced forward rotational speed to the output shaft. The input shaft of the ascender is provided with a one-way clutch portion that allows a forward rotation and prevents a reverse rotation. The forward rotation of the pulley is performed by restricting rotation of the one-way clutch portion about the input shaft and driving the input shaft to rotate forward in a climbing direction by the rotary power tool. The reverse rotation of the pulley is performed by releasing the rotation restriction of the one-way clutch portion about the input shaft.

Abstract: A descent device for controlling descent on a rope having a housing, a cam, a lever, a linkage, a brake, and an eye. The housing is a pair of opposed plates separated by spacers, three of which operate as axles for the cam, lever, and brake. The cam has a rope track that extends around the perimeter of the cam at least 540° but not more than about 650°. A hump in the rope track forms a pinch point with a housing spacer. The lever rotates the cam via a linkage between a payout position where the rope can move freely through the device, a braking position where the rope is pinched at the pinch point and a cleat of the brake moves lightly to the rope, and a panic position where the rope is pinched by the brake cleat.

Abstract: A filter mask for filtering air inhaled and exhaled from the mouth and nostrils while providing a secure fit and comfort to the wearer is provided. The filter mask has upper and lower edges which are provided with at least one malleable stiffener for conforming to the shape of the wearer's nose and cheek area and/or the lower jaw and chin area. In some embodiments, the filter masks further comprises a malleable stiffening member configured to conform the filter material to at least a chin portion and a jaw portion of the face. In some embodiments, the malleable stiffener can have a bend portion, which allows the wearer of the mask to know which part, center and side of the mask is to be properly placed on the nose and cheek area. The masks provide excellent filtration and provide a secure and comfortable fit to the wearer.

Abstract: An adaptor to allow fit testing a particulate or gas and particulate protection facemask/respirator, the adaptor having an adaptor body configured to couple with an exhalation valve of the facemask. The adaptor body includes a protruding first sampling tube adapted to connect to a known facemask fit testing device, the first sampling tube being able to be connected to a second adaptor sampling tube inside the facemask passing through the exhalation valve.

Abstract: A fall arrest system for use with a platform includes a first bracket and a second bracket configured to be coupled to the platform, a horizontal support coupled to the first bracket and the second bracket, and a harness adapter slidably coupled to the horizontal support and configured to be coupled to a harness worn by an operator. The first bracket defines a recess configured to receive a guardrail of the platform when the first bracket is coupled to the platform. The harness adapter is repositionable along a length of the horizontal support.

Abstract: A processing apparatus for removing dioxin in fly ash from domestic waste incineration by using a ball mill includes a grinder as well as a feeding body and a discharging body that are separately arranged at both ends of the grinder. In the present disclosure, an induction coil is electrified by arranging a heating body to generate an alternating magnetic field such that eddies generate on an inner wall of a grinding cylinder in the induction coil, the grinding cylinder is heated by the energy of these eddies, making a grinding ball thermally desorb and decompose a harmful component, that is, dioxin in the fly ash through a high temperature when grinding the fly ash from the domestic waste incineration since a temperature in the grinding cylinder reaches 300-500° C. during grinding.

Abstract: A blade resistance adjustment structure and an exercise machine having the same are disclosed. The blade resistance adjustment structure includes a rotating shaft, a blade seat, a plurality of blades, a sliding seat, and a plurality of connecting members. Through an adjustment force, the radius of rotation changes along with an opening and closing angle, thereby changing the magnitude of rotational resistance.

Abstract: The present disclosure relates to the technical field of fitness equipment, more particularly to a training apparatus capable of being quickly combined into a dumbbell and a kettlebell. The training apparatus includes: a plurality of weight blocks, a kettlebell body and a handle; and a plurality of connecting mechanisms, the connecting mechanism including a snap ring, a snap-fit block and two abutting blocks. After rotation to place, the abutting blocks will autonomously extend out of the mounting grooves to lock the snap-fit block with a diagonal distribution. The above connection method is simple in operation and low in mounting difficulty, whereby the training apparatus is convenient to transform and achieves an effective combination of two in one. Furthermore, the handle can be received into the kettlebell body, reducing the risk of being lost.

Abstract: An exercise apparatus for attachment and use within a door frame includes a pair of elongated frame elements with each having apertures configured to receive various types of cross bars. The frame elements are designed to be secured to vertical portions of a door frame without interfering with passing through the doorway or closing the door. A cross bar having a length greater than the door width is configured to be received within corresponding apertures among the frame elements. A cross bar has a retractable spring pin protruding from the bar so that the spring pin may engage a frame element to limit axial excursion of the bar. Two such spring pins may be included in the bar, so that with the frame elements including apertures having pin-receiving pockets, one type of bar may rotate freely while another type of bar is prevented from rotation.

Abstract: An exercise device system comprising a tower; a support structure inclinable at different angles relative to the tower; a movable user support platform assembly movably associated with the support structure for movement relative to the support structure; a pulley system associated with the movable user support platform assembly; a cable extending through the pulley system and including opposite ends; exercise device handles coupled to the opposite ends of the cable, whereby movement of the handles causes movement of the movable user support platform assembly relative to the support structure.