23 results about "Amputated extremity" patented technology

An endoprostheses may include a bone anchor having a proximal end having an extension configured to be inserted into a residual portion of an amputated bone of a patient. The endoprostheses may also include a non-jointed endoprosthesis body configured to enclosed by soft tissue of the patient and having a proximal end configured to be coupled to a distal end of the bone anchor. The endoprostheses may also include a coupling configured to releasably engage the bone anchor and the non-jointed endoprosthesis body. The coupling may be configured to cooperate with the bone anchor and the non-jointed endoprosthesis body to maintain an axial and rotational arrangement of the non-jointed endoprosthesis body with respect to the bone anchor.

The utility model discloses an animal limb operation strapping device, which belongs to the technical field of strapping hemostasis and comprises a limb sheath. A plurality of ribbons which are arrayed in the circumferential direction and are not connected with one another are connected to the upper portion of the limb sheath, a threading hole is formed in the end of each ribbon, and all the ribbons can be fastened together by penetrating binding belts into the threading holes; dense anti-licking puncture parts are fixed on the side surface of each ribbon from inside to outside in a penetrating manner, and the dense anti-licking puncture parts are like thorns on a hedgehog body. The binding device is used for binding and stopping bleeding at amputation or amputated limb during animal operation, a bandage is bound at a wound firstly, then the limb sheath is sleeved on the outer side of the bandage, and due to the fact that the anti-licking puncture part on the side face of the bandage is like a thorn on a hedgehog, animals can be effectively prevented from licking or scratching the bandage at the wound, so that the bandage is prevented from falling off, and the wound is prevented from being infected.

Systems and methods are provided for applying electrical stimulation to a body by an electrode spaced from a target nerve of passage. It has been discovered that pain felt, or perceived to be felt, in a given region of the body can be treated by stimulating muscle close to a “nerve of passage” in a region that is superior (i.e., cranial or upstream toward the spinal column) to the region where pain is felt, such as in a case of post-amputation residual limb pain, or purportedly felt in the case of post-amputation phantom limb pain.

A powered ankle / foot prosthetic with a closed-loop, neural, bi-directional intuitive control system can be utilized for transtibial amputees with traditional socket prosthetics or for those with osseintegrated prosthetics. Control (efferent) signals from the user to the prosthesis actuator are captured from EMG of residual gastrocnemius and tibialis anterior muscles. Sensory feedback (afferent) information about contact of the prosthetic foot with the ground obtained from a pressure sensor located on the foot bottom is reported to the user's nervous system by electrical stimulation of the residual trans-tibial and sural nerves. Surgically implanted or skin surface electrodes placed on / within the residual ankle flexor and extensor muscles relay recorded EMG to the control electronics mounted on the linear actuator. The control electronics are designed to generate a more natural powered plantarflexion of the ankle joint based on the EMG data, pressure sensor, and other inertial sensors.

Provided herein is an inflatable compression device for performing compression therapy to an amputated limb of a subject, the device includes a compression sleeve and an adjustable compression pocket configured to provide compression therapy to the stump face and adjust to the length of the amputated limb. Further provided are systems and methods of using the same.

Stump simulator for medical training purposes, especially for plaster casts or palpation exercises, characterized by an anatomical bone model enclosed by a soft layer of silicone gel or a similar soft material, wherein the external shape and texture of the soft tissue layer corresponds to a real amputation stump of a human extremity.

Mechanoneural Interfaces (MIs) and methods of forming MIs are provided, including cutaneous mechanoneural interfaces (CMIs) and proprioceptive mechanoneural interfaces (PMIs). A CMI includes a device in operative arrangement with a muscle actuator to stimulate muscle contraction, the muscle actuator disposed in a substantially circumferential configuration about a skin flap that includes a native or regenerative neurovascular structure of an amputated body segment. A PMI includes an actuator mechanically linked to a muscle end organ and configured to apply a force to the muscle end organ, the actuator including a synthetic actuator or a biological muscle actuator. The muscle end organ is of an agonist-antagonist muscle pair and can include at least one of a native or regenerative neurovascular structure. CMIs and PMIs can each further include a controller configured to provide a stimulation signal or operate an actuator based on a signal received from a sensor of a prosthetic device.

A method of making a thermoplastic gel prosthetic liner for use with a prosthetic assembly that acts as the interface between the residual limb of an amputee and the socket assembly. The prosthetic liner comprises an open proximal end, a closed distal end, and sidewalls comprising an inner layer of molded thermoplastic gel. The thermoplastic gel is molded over a mandrel that has been sandblasted using #36 grit and, optionally, #320 grit at 100 psi so as to form microcraters and reduce the coefficient of static friction.

The present disclosure provides a prosthetic liner comprising a liner body configured to fit over a residual limb of an amputee, the liner body having an outer surface, and one or more elastomeric regions disposed on the outer surface of the liner body. The one or more elastomeric regions are configured to increase friction between the outer surface of the liner body and an inner surface of a prosthetic socket. The elastomeric regions may be arranged in a pattern on the outer surface, such as strips, lines, dots, or a customizable image. The liner body may be covered with a fabric material except for the elastomeric regions, which are formed from an exposed elastic polymer material.

A control air bag is connected with one end of an air pipe through an air bag additional section, the other end of the air pipe is communicated with a function portion, the function portion is fixedly installed on the upper surface of an air cable tie body, and a first hook-and-loop fastener and a second hook-and-loop fastener are installed on the upper surface of one end of the air cable tie body and the lower surface of the other end of the air cable tie body respectively. According to the utility model, the air bag is controlled to inject air to expand the air ribbon body wound on the arm of a patient, and then the pressure state of the air ribbon body is known in time through the barometer, so that the tourniquet can be conveniently used and the pressure of the tourniquet can be controlled to ensure smooth blood sampling; meanwhile, by means of the automatic timing function of a control panel of the functional part and the automatic deflation function of an electric control valve, the use time can be accurately controlled, the air cable tie body can be automatically loosened after timeout, and limb avascular necrosis and even amputation adverse nursing events caused by forgetting to loosen the tourniquet are completely eradicated; and the occurrence rate of blood sample hemolysis caused by long-time use of the tourniquet is reduced.

The utility model discloses an artificial limb heating device which comprises a base body and a cable connected with the base body. The base body wraps an artificial limb, a controller is arranged on the cable, and an electrifying connector is arranged at the end of the cable; the base body sequentially comprises an anti-skid layer, a heat preservation layer, a heating layer, a heat preservation layer and a protection layer in the direction from the artificial limb contact face to the non-contact face. The anti-skid layer, the heat preservation layer, the heating layer, the heat preservation layer and the protection layer are all made of flexible materials. An electric heating wire is arranged in the heating layer; and a connecting piece is arranged at the end part of the base body. The protection layer is made of waterproof materials, and heat preservation cotton is arranged in the heat preservation layer. The heating layer is designed in the base body, the heat preservation layer is designed for heat preservation, the base body is wrapped on the surface of the contact position of the artificial limb and a patient, heating is completed through the electric heating wire, then the artificial limb is heated, the situation that the temperature of the artificial limb and the body temperature of the patient differ greatly is avoided, and the use experience of a user is improved; and the influence of the matched artificial limb with large temperature difference on the amputation part of the patient is reduced.

Disclosed is a system and method for administering targeted brain rehabilitation therapies in an immersive multimedia environment so as to reduce phantom limb pain and counteract cortical remapping associated with limb amputation in a patient user of the system and method. Embodiments of the solution leverage immersive extended reality environments, such as augmented (AR) and virtual (VR) reality, which may be combined with autonomous limb tracking sensors, myoelectric equipment, custom-tailored projections of a user's amputated limb(s), and a progressive therapeutic regimen based on Graded Motor Imagery (GMI) and mirror therapy, among other features and aspects.

The utility model relates to a chopstick holding hand head, belongs to the technical field of artificial limbs, and aims to solve the problem that an existing artificial limb hand head cannot stably grab chopsticks. The hand head comprises a hand head main body, a normally open clamp body and a control cable. The hand head body is provided with a jaw structure, the normally-open clamp body is arranged at the jaw and comprises a first clamp arm and a second clamp arm, and the upper ends of the first clamp arm and the second clamp arm are hinged to each other and kept in an open state through a reset spring. The first clamping arm is a movable arm, the second clamping arm is a fixed arm, and a first chopstick and a second chopstick are installed at the movable ends respectively. The front end of the control cable is hinged to the first clamping arm, the rear end of the control cable is connected with the driving piece, and the clamping action of the chopsticks is achieved by pulling the control cable. Chopsticks can be clamped through a simple mechanical structure, operation is convenient, the structure is reliable, autonomy of daily diet of an amputated patient can be effectively helped to recover, and life quality is improved. In addition, the chopsticks are detachable, convenient to adjust and replace, suitable for using habits of different users and high in social application value.

A prosthesis (1) of an amputated limb for a pet is disclosed, wherein: it comprises a main body (2) extending longitudinally, which is hollow, which is made in a single piece and which is shaped to receive a stump (3) of an amputated limb (4); the main body (2), in turn, comprises: a first part (5) extending along a first axis (A1) and forming a tubular structure; a second part (6) extending along a second axis (A2) and having a first opening (7); it comprises an end (8) which is connected to the first part (5) and which comprises an external surface (9) arranged to contact the ground during the use of the prosthesis (1) of the limb. Furthermore: the prosthesis (1) of the limb comprises anchoring means (10) which are carried by the second part (6) and which are arranged to anchor the stump (3) of the amputated limb (4) and the main body (2) to each other; the first part (5) and the second part (6) are angularly arranged with respect to each other so that the second part (6) laterally embraces part of the radius and ulna bones of the anterior amputated limb (4) or part of the tibia and fibula bones of the posterior amputated limb (4), and the first part (5) receives the stump (3) of the amputated limb (4) during the use of the prosthesis (1) of the limb.

A silicone prosthetic liner for a prosthetic assembly that acts as an interface between a residual limb of an amputee and a socket assembly. The prosthetic liner includes an open proximal end, a closed distal end, and a sidewall that includes a molded silicone inner layer. The silicone is molded onto a mandrel that has been blasted with #36 grit at 100 psi to create micro-pits and reduce the coefficient of static friction.

A system for training an individual in the use of a prosthetic Limb. A sleeve is positionable on a residual limb. The sleeve includes at least one sensor, receiving signals representative of activation of at least one muscle within the residual Limb, and at least one haptic feedback transducer. An augmented reality headset is provided with at least one of visual image presentation and audio presentation. A control processor communicates with the sleeve and the headset. The control processor receives at least one signal from the at least one sensor in the sleeve representing activity of muscles within the residual limb.

This invention discloses a bioactive suture for muscle fixation surgery and its preparation method. The suture has a coaxial three-layer structure, comprising a shape memory polymer core layer, a biodegradable intermediate layer, and a permanently woven outer shell layer radially from the inside to the outside, and longitudinally divided into three functional zones: a bone end zone, a transition zone, and a tendon end zone. The shape memory polymer core layer uses a polylactic acid / polyhydroxybutyrate valerate blend, which triggers controlled contraction under body temperature and hydration conditions, automatically compensating for tension loss caused by postoperative edema reduction. The biodegradable intermediate layer uses polylactic acid-glycolic acid copolymer microspheres with different ratios to achieve longitudinal, zoned, and time-sequential release of various bioactive factors such as bone morphogenetic protein-2 and vascular endothelial growth factor. This invention integrates tension self-regulation, time-sequential release, and surface biomimicry, and is suitable for tendon-bone insertion reconstruction after amputation.

The utility model belongs to the technical field of rehabilitation assistive devices, and particularly relates to an assembly type cutting assistive device which comprises a pressing frame and a connecting frame, one side of the pressing frame is fixedly connected with the connecting frame, an inner cavity of the connecting frame is movably connected with a mounting shell, an inner cavity of the mounting shell is movably connected with two moving plates, and the moving plates are movably connected with the pressing frame. According to the assembly type cutting assisting device, a user can pull the bottom end of a pull rope downwards, so that the two movable plates move in the opposite directions, the clamping columns are separated from inner cavities of the clamping grooves, the installation shell and the connecting frame can be unlocked, and therefore the installation shell and the food fixing device can be disassembled conveniently; a user is allowed to complete splicing through one-hand operation, the splicing device is particularly suitable for people with unilateral limb dysfunction, independent operation possibility is provided for hemiplegic, amputated or physically ineffective people, the self-care ability of life is enhanced, quick splicing is achieved, storage is convenient, and kitchen space is saved.

A prosthetic liner having a lower longitudinal stretch in the distal region than in either the proximal or optional intermediate region. The distal region may stretch anywhere from 0-30% vertically and 10-200% horizontally as compared to the proximal region's vertical stretch of 55- 125% and 100-175% horizontally. A variety of stitches may be used at the distal end to implement this lowered longitudinal stretch. The liner also has an interior layer of elastomer gel. The design of this prosthetic liner is primarily to prevent the "pistoning" of the amputee' s residual limb within the liner and for comfort over pressure-sensitive areas of the residual limb. The liner also includes the use of a low extensibility material which is adhered to the fabric portion of a prosthetic liner or orthotic liner either internally or externally and limits the longitudinal movement while allowing for transversal movement.

The utility model relates to the technical field of prostheses, and discloses a prosthetic socket with a bacteriostasis function, which comprises a connecting end and a prosthetic body, the connecting end is arranged at the bottom of the prosthetic body, a plurality of through holes penetrating through the prosthetic body are arranged on the prosthetic body, an inner cavity is arranged in the prosthetic body, and the connecting end is arranged at the bottom of the prosthetic body. A plurality of limiting guide rails are arranged on the inner wall of the inner cavity at intervals in the circumferential direction, through the arrangement of the lining plate, the through hole, the arc-shaped supporting plate and other structures, in the using process of the artificial limb body, it is guaranteed that a certain ventilation space is formed between the amputation end of a user and the lining plate through mutual cooperation of the through hole, the strip-shaped cavity and the strip-shaped groove, and therefore the ventilation effect of the artificial limb body is improved. The artificial limb has the advantages that a dry and comfortable environment in the artificial limb body can be guaranteed, bacterium breeding is reduced, bacterium breeding can be further inhibited by the aid of the activated carbon antibacterial layer, and comfort of a user is further guaranteed.

A wearable radiation emitting therapy device for an amputee patient which is structured to emit at an amputation site a spectrum of near infrared light and infrared light suitable for promoting recovery, reducing general pain, and preventing phantom limb pain syndrome in post op scenarios for amputee patients. The wearable radiation emitting therapy device may be formed as a wrap body suitable to enclose the stump and surrounding areas of an amputated limb, with the having a pair of elastic securing straps in a proximal position relative to the stump and a wraparound adjustment strap in a distal position relative thereto. A control module releasably attachable to the wrap body, with the control module operative to wirelessly control two or more types of LED lights positioned inside the wrap body so as to cause the lights to direct various spectrums of light into and around the amputation site.

An improved method for manufacturing a so-called final socket from a provisional socket, for equipping a residual limb of an amputated person. The method has a 3D modelling of the interior surface of the provisional socket that includes a 3D model of said surface in a spatial reference frame and an automatic modification of said 3D model to optimise the arrangement of an artificial limb on the final socket. The method furthermore includes optimising a digitisation step by determining an improved position of a distance-measuring tool in the provisional socket during the modelling. The invention also relates to a system for aiding the manufacture of a final socket configured to implement the method that is the object of the invention.

A prosthetic liner having a lower longitudinal stretch in the distal region than in either the proximal or optional intermediate region. The distal region may stretch anywhere from 0-30% vertically and 10-200% horizontally as compared to the proximal region's vertical stretch of 55- 125% and 100-175% horizontally. A variety of stitches may be used at the distal end to implement this lowered longitudinal stretch. The liner also has an interior layer of elastomer gel. The design of this prosthetic liner is primarily to prevent the "pistoning" of the amputee's residual limb within the liner and for comfort over pressure-sensitive areas of the residual limb. The liner also includes the use of a low extensibility material which is adhered to the fabric portion of a prosthetic liner or orthotic liner either internally or externally and limits the longitudinal movement while allowing for transversal movement.