57 results about "Amputated extremity" patented technology

Systems, devices, and methods of the present application can accelerate and reduce medical complications associated with healing of non-planar wounds such as amputation wounds. The devices and methods utilize a collapsing structure and negative pressure to cause the shaped wound to preferentially close. The structure can accommodate movement over curved tissue surfaces, which can utilize scales or interleaved elements to provide efficient wound closure along arcuate paths. This structure can enable gradual closure from the deepest portion of the wound to the shallowest portion.

A machine for forming a negative cast of an end portion of an amputated limb has an outer rigid tubular body; an elastically deformable tubular membrane housed within the rigid tubular body and having its opposite annular end portions fluid-tightly connected to the rigid tubular body, to define a through-duct through which the limb passes and, with the rigid tubular body, a fluid-tight elongated annular chamber with variable volume surrounding the limb; a reference membrane for positioning of the limb within the duct being provided at the outlet of the duct.

Herein described is an osseointegrated interface device for engagement with an amputated limb including the skin comprising: a cap portion engageable with an osseointegrated device; wherein the cap portion comprises a surrounding flange; and wherein in use the surrounding flange receives the skin of the amputated limb at a distance spaced from the osseointegrated device.

The invention relates to a built-in artificial limb connecting device. The built-in artificial limb connecting device comprises a bone stump fixing sleeve which is of a tubular structure with two open ends, wherein a first joint part is formed at a first end of the bone stump fixing sleeve, a bone stump fixing cavity is formed in a second end of the bone stump fixing sleeve, and the bone stump fixing cavity is configured to be arranged outside a stump bone in a sleeving mode and connected with the stump bone in a fastened mode; and a bone stump fixing handle, wherein the bone stump fixing handle comprises a broach, a second joint part and an external connection part which are integrally connected, the broach of the bone stump fixing handle penetrates through the first end of the bone stump fixing sleeve and then is fixedly connected with the first joint part of the bone stump fixing sleeve through the second joint part, the broach of the bone stump fixing handle is used for being inserted into a marrow cavity of stump bone and is fixedly connected with the marrow cavity of the stump bone, and the external connecting part of the bone stump fixing handle is used for being connected with an external artificial limb. The built-in artificial limb connecting device can be widely applied to patients subjected to amputation for different reasons, integration of a connector and the stump bone is achieved, and the amputated patients can conveniently replace different more-comfortable external artificial limbs according to own requirements.

The invention discloses an implantable prosthetic device capable of lengthening an amputation stump at the middle-upper section of a femur. The implantable prosthetic device comprises a first intraosseous implantation part and a second intraosseous implantation part, the second intraosseous implantation part is telescopic, the second intraosseous implantation part comprises a traction section anda driving section, in a use state, the first intraosseous implantation part penetrates through the vertex of a femoral trochanter to extend to the femoral section, a screw is arranged on the lower portion of the second intraosseous implantation part, the second intraosseous implantation part penetrates through the femur, the traction section is fixed to the femur, the driving section is in slidingconnection with the traction section, The upper end of the driving section abuts against the first intraosseous implantation part, and the lower end of the driving section extends out of the stump. By means of the device, for limb shortening caused by various reasons clinically, bone lengthening can be conducted through a bone carrying technology provided by an orthopedist llizarov, and the problem of limb shortening is solved through a tissue tension stress rule; the problem of continuous amputation in a later period can be completely eradicated, and pain and economic burdens of a user are greatly relieved; and a connecting structure enables a prosthesis to be firmly connected with the stump femur.

An artificial lower limb motion intention recognition algorithm based on BPSOGWO-KNN belongs to the technical field of mode recognition, and comprises the following steps: firstly, extracting multi-sensor data in a 200ms time window when a weighing sensor value is just greater than 16N in each gait cycle, denoising and removing abnormal data, and adding a classification label to normal data; extracting seven time domain feature values of data of each dimension in the time window, and performing feature selection by using a BPSOGWO-KNN algorithm; performing optimization training on a nearest neighbor value K in the KNN classifier and a feature weight in an optimal feature subset selected by a BPSOGWO-KNN algorithm by using a BBO algorithm; inputting the nearest neighbor value K and the feature weight value obtained through optimization into an improved KNN classifier; according to the method, redundant feature values are removed, different weights are given according to different contributions of the feature values, the distance mean values of K neighbor values closest to the target under each classification category are compared, pattern recognition is carried out, the algorithm accuracy is greatly improved, and the use safety of a lower limb amputation patient is guaranteed.

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. The stretch of the liner at various pressure sensitive regions of a residual limb can also be lowered or heightened depending on the area. A variety of stitches may be used at the distal end to implement this lowered longitudinal stretch. Preferably, the liner is made of a stretchable material. 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 customizable nature of the invention allows for shaping and personalization depending on the needs of the user.

The invention relates to a micropowder medicament for treating bone fractures such as fracture, paralysis, osteonecrosis and bone fracture sequelae which are caused by trauma and the like and a preparation method thereof. The micropowder medicament comprises the following raw material medicaments: 4 to 7 parts of pyrite, 2 to 5 parts of herry rhodiola, 2 to 5 parts of frankincense, 2 to 5 parts of myrrh, 1 to 5 parts of safflower, 1 to 4 parts of garden balsam stem, 3 to 5 parts of prepared rhubarb, 2 to 5 parts of dioscorea nipponica, 3 to 6 parts of sea cucumber, 1 to 2 parts of gecko tail, 3 to 7 parts of pyrolusite and the like. The preparation method comprises the step of grinding the raw material medicaments into fine powder with the grain diameter of 300 to 1,000 meshes by a low-temperature freeze drying method, and preparing capsules for oral administration, or blending on site to form paste for external application; moreover, the medicament can be used for oral administration and external application simultaneously. The micropowder medicament has the excellent effect on closed fracture except for head injury, and particularly for traumatic patients who suffer from the bone fractures, both the trauma and the bone fractures can be treated. By the invention, more patients who suffer from the bone fractures and particularly serious patients do not suffer from amputation, do not need wheelchairs, and are recovered quickly, without sequela.

The invention discloses a prosthesis receiving part which includes a receiving head, a first supporting rod, a second supporting rod, a transmission assembly and a first elastic kit. The receiving head and a prosthetic hand head are detachably connected, and the first supporting rod and the second supporting rod are both fixedly arranged on the receiving head; the transmission assembly includes afirst swinging part, a transmission casing and a transmission wheel, the transmission casing is fixedly installed on the first supporting rod, the first swinging part is hinged to the transmission casing, and the transmission wheel is rotatably arranged on the transmission casing and is connected with the first swinging part in a driving mode; a steel wire rope is wound on the transmission wheel,the first end of the steel wire rope penetrates through the receiving head and is in drive connection with the prosthetic hand head, and the second end of the steel wire rope is connected with the first swinging part; and the first supporting rod and the second supporting rod are jointly enclosed to form an installation cavity for the amputated elbow of a patient to extend into and wear. The structure can be applied to all amputated patients who still have elbows, adjustment can be carried out according to the actual situation of different patients, and the prosthesis receiving part can be adapted to people with different arm thicknesses.

The amputation device comprises a base, a fret saw support, a fret saw, a jacking supporting rod and a motor. The two groups of fretsaw brackets are oppositely arranged on the base, the fretsaws are connected into a ring and are wound on pulley blocks arranged on the two groups of fretsaw brackets, a section of the fretsaw is always lapped between the tops of the two groups of fretsaw brackets, and an amputated limb is pressed on the section of the fretsaw between the two groups of fretsaw brackets, so that the whole fretsaw ring is tensioned; a jacking pulley of the pulley block is installed on the top of the fret saw support through a jacking supporting rod, the fret saw bypasses the jacking pulley to be in lap joint with the top of the fret saw support, the fret saw support is provided with a jacking spring which pushes the jacking supporting rod upwards, the fret saw is always kept in a tensioning state, and the motor is connected with the fret saw through a reciprocating mechanism. And the tensioned wire saw ring is driven by the motor to do reciprocating motion so as to drag and saw limb bones pressed on the wire saw. The amputation device can improve the amputation operation effect, saves the physical output of the operation, and can be widely popularized and applied in the bone surgery amputation operation.

The invention provides an actively-driven ankle joint artificial limb, which comprises a main rack, an electric linear driver, a foot plate connecting frame, a foot plate, a torsional spring and a quadrangular frustum pyramid, wherein the foot plate connecting frame is fixed to the heel portion of the upper surface of the foot plate, the bottom of the main rack is hinged to the rear end of the foot plate connecting frame through an ankle joint rotating shaft, the top of the main rack extends forwards to form a platform, the quadrangular frustum pyramid is installed on the platform and used for being connected with a leg structure, the top end of the electric linear driver is hinged to the front lower portion of the platform through a first rotating shaft, the lower end of the electric linear driver is hinged to the front portion of the foot plate connecting frame through a second rotating shaft, the ankle joint rotating shaft is sleeved with the torsional spring, and the two ends of the torsional spring abut against the inner side face of the main rack and the upper surface of the foot plate connecting frame respectively. According to the invention, the actively-driven ankle joint artificial limb is simple in structure, light in weight, convenient to use and easy to control; and the foot plate connecting frame connected with the electric linear driver rotates around the ankle joint rotating shaft by controlling the telescopic stroke of the electric linear driver, and then knee joint artificial limb bending of an amputated patient after the amputated patient is matched with the artificial limb is achieved.