49 results about "Joint capsule" patented technology

A minimally invasive method of correcting a bunion includes performing an osteotomy to divide the metatarsal into first and second portions, creating a pocket in the first portion implanting a nail in the pocket, securing a suture to the joint capsule, tensioning the suture to align the great toe with the metatarsal, attaching the suture to the nail, and fastening the nail to the second portion. The nail includes an anchor portion for anchoring in the first portion, a head for attachment to a second portion, a passage for attachment of the suture, a first aperture for a fastener to attach the head with the first portion, and a second aperture for a fastener to attach the head with the second portion.

The utility model provides an atlantoaxial joint fusion cage which comprises a fusion cage body with round and blunt peripheral corners, the fusion cage body is an ellipse-like hollow polyhedron, the hollow polyhedron is divided into a front supporting section and a rear supporting section, and the front supporting section is a cone composed of four faces or is in a streamline shape so as to facilitate implantation of the fusion cage; the rear supporting section is in a cuboid shape, the rear end face of the rear supporting section is sequentially provided with an opening groove, a rectangular opening and a screw hole from one side to the other side, an inserting piece is arranged in the fusion cage body, the inserting piece penetrates through the rectangular opening and then inclines upwards, and barb structures are arranged on the two sides of the inserting piece. The anatomical structure conforming to the atlantoaxial joint gap in appearance is adopted, after the anatomical structure is implanted into the atlantoaxial joint gaps on the two sides, surrounding loose joint capsules generate tension so that the atlantoaxial joints can be immediately stabilized, bone grafting fusion can be faster and better in the internal fixation stable period, and then the purpose of atlantoaxial stabilization is achieved; the atlantoaxial dislocation or instability can be effectively treated.

Systems and methods are provided for performing 3D intracorporeal ultrasound imaging of tissue surfaces, such as tissue surfaces located inside a joint capsule during arthroscopic surgery. An intracorporeal ultrasound probe is provided having a rotatable distal region supporting an ultrasound transducer array. The ultrasound array is controlled to collect image data at several elevation angles while rotating the distal region of the probe, thereby acquiring a local 3D image dataset spanning a local 3D volume associated with the current probe pose. This process is repeated as the probe pose is varied, resulting in a set of local 3D image datasets, each corresponding to a different probe pose. The local 3D image datasets are processed to segment tissue surface contours and generate a corresponding set of surface tiles. The surface tiles are processed and combined to generate a composite 3D image, optionally based on input from one or more sensors.

Disclosed is an innovation in the manner of surgically exposing the knee during total or partial knee arthroplasty, because currently, and as it has always been the case, the conventional surgical approach for the knee used the anterior route but also the medial route, where it was necessary to sever the whole tissue attachment of the inner bone border thereof, said tissue attachment comprising the capsule (envelope), the medial patellofemoral ligament and the tendon of the vastus medialis oblique (muscle) of the quadriceps. The present invention relates in particular to operating equipment intended to facilitate and / or implement a new and innovative surgical approach.

Systems and methods are provided for 3D in vivo ultrasound imaging of a tissue surface, such as a tissue surface located within a joint capsule, during an arthroscopic procedure. An in vivo ultrasound probe is provided having a rotatable distal region supporting an array of ultrasound transducers. An ultrasound array is controlled to collect image data at several elevations while rotating the distal region of the probe to acquire a local 3D image data set across a local 3D volume associated with a current probe pose. This process is repeated as the probe pose changes, resulting in a set of local 3D image datasets, each local 3D image dataset corresponding to a different probe pose. The local 3D image dataset is processed to segment a tissue surface profile and generate a corresponding set of surface tiles. The surface tiles are processed and combined to generate a synthetic 3D image, optionally based on input from one or more sensors.

The full-automatic meniscus cutter comprises a plasma cutter head, a connecting rod, a rotating shaft, a joint insertion rod, a supporting frame and a control system, the plasma cutter head is connected to the front end of the connecting rod and used for cutting lesion tissue of a meniscus, and the rear end of the connecting rod is connected with the rotating shaft; the rotating shaft is rotationally connected to the rear end of the joint insertion rod and is perpendicular to the joint insertion rod, the front end of the joint insertion rod is used for being inserted into a joint cavity and abutting against a joint capsule, a rotating driver used for driving the rotating shaft to rotate is arranged on the supporting frame, and the connecting rod is of a telescopic rod structure and is provided with a telescopic driver used for driving the connecting rod to stretch out and draw back. The control system is electrically connected with the rotating driver and the telescopic driver and used for commanding and controlling the rotating shaft to rotate and commanding and controlling the plasma tool bit to reciprocate front and back. The meniscus cutter has the advantages that automatic cutting and precise cutting are achieved, operation time is shortened, damage to surrounding healthy tissue is reduced, and monitoring and precise control are achieved.

The utility model relates to the technical field of rehabilitation training, in particular to a rehabilitation training device for knee joint postoperative adhesion, which comprises a thigh support plate, a shank support plate and a drafting device. One end of the shank supporting plate is rotationally connected with one end of the thigh supporting plate, the other end of the shank supporting plate is hinged to a height-adjustable adjusting supporting piece, the bottom of the adjusting supporting piece is placed on the ground, and a fixed pulley is arranged at the end, away from the thigh supporting plate, of the shank supporting plate. The traction device comprises a fixing band, a traction rope and a weight, the fixing band is used for being fixed to the portion below the knee joint of the patient, one end of the traction rope is connected with the fixing band, the other end of the traction rope bypasses the fixed pulley to be connected with the weight, and the weight is hung at the end, away from the thigh supporting plate, of the shank supporting plate through the traction rope and used for continuously drafting the knee joint of the patient. The knee joint traction device has lasting traction force on the knee joint, the force for traction of the knee joint is always parallel to the tibiofibula, the joint capsule is effectively pulled, and the knee joint traction device is very convenient to use and store.

This invention provides a biomimetic training model for temporomandibular arthroscopic disc reduction and suturing. The biomimetic training model includes: a skull model with several traction positioning components; a simulated articular disc; a simulated joint capsule including a superior and inferior joint capsule, which are respectively connected to the upper and lower surfaces of the simulated articular disc; the superior joint capsule has an upper opening, and the inferior joint capsule has a lower opening; a temporal bone connector connected to the upper opening and detachably connected to the temporal bone of the skull model; a mandibular bone connector connected to the lower opening and detachably connected to the mandible of the skull model; and several traction components, one end of which is connected to the simulated articular disc, and the other end is adapted to be detachably connected to the traction positioning components, thereby adapting the shape and position of the simulated articular disc by connecting the traction components to the traction positioning components.

Devices and methods are disclosed herein for accessing the hip joint. A first device can be securely attached to the capsule of a joint. The first device can tent the capsule to increase the volume of the peripheral compartment. A second device can be biased against the first device to pierce the tented capsule and create a portal. Devices and methods are also disclosed herein for distending the capsule of a joint. A distention device may access a portal established within the capsule. The distention device can expand the capsule by applying an expansive force within the peripheral compartment. The distention device can maintain distention of the peripheral compartment while other devices access the joint.

The invention relates to the field of auxiliary instruments for wrist arthroscopic surgery, and particularly discloses a wrist arthroscopic channel stabilizing device which comprises a groove type sleeve made of a disposable vein infusion tube, the tube wall of the groove type sleeve is cut off in the longitudinal direction to form an open groove, the two ends of the groove type sleeve are cut to be smooth, and the length of the groove type sleeve is suitable for a wrist arthroscopic surgery approach; by establishing the stable channel, the instrument can freely slide along the groove wall of the stable channel, repeated friction and injury of the surgical instrument to subcutaneous tissues around an approach, such as joint capsules, blood vessels, nerves and tendons, are effectively avoided, surgical wounds are remarkably reduced, multiple times of access of the same channel can be ensured, no tissue implication is caused, and the surgical efficiency is improved. By the adoption of the structure, intra-articular operation can be rapidly transferred to be conducted outside the joint, the annular design reduces compression damage to channel tissue, it is guaranteed that the sleeve always exists, and the open type notch design enables an operation instrument to obtain a free operation space.

The invention discloses a rehabilitation device for preventing foot drop of a hemiplegic patient, the rehabilitation device comprises a sole supporting plate and a shank supporting plate, the heel part of the sole supporting plate is movably connected with the bottom of the shank supporting plate through a first spherical shaft device, and one side of the sole supporting plate is provided with a second spherical shaft connecting device; a third spherical shaft connecting device is arranged on the other side of the second spherical shaft; by combining a plurality of structures such as the sole supporting plate, the shank supporting plate, the first spherical shaft device, the second spherical shaft connecting device and the third spherical shaft connecting device, the angle between the sole supporting plate and the shank supporting plate is accurately adjusted through a computer program stored on a computer readable storage medium; according to the technical scheme, ROM training of double-lower-limb massage training can be carried out on a paralyzed patient, and according to the training basis, the product is used for assisting the patient in carrying out joint flexion and joint stretching activities of feet, so that joint capsules and tendons around joints are fully stretched.

A method for retracting a capsule of a joint includes forming a cut in the capsule to create a plurality of separated portions of the capsule. A first end of a first length of suture is passed through a first separated portion of the capsule and moved out of the joint. A first end of a second length of suture is passed through a second separated portion of the capsule and moved out of the joint. The first end and a second end of the first length of suture are pulled to retract the first separated portion of the capsule. The first end and a second end of the second length of suture are pulled to retract the second separated portion of the capsule. An arthroscopic procedure is performed in the joint, and the first length of suture and / or the second length of suture is used to close the capsule.

The invention discloses medical rheumatism immunology department detection auxiliary equipment and a use method thereof, relates to the technical field of medical auxiliary equipment, and aims to solve the technical problems that after legs are fixed, joint bending adjustment is difficult, and joint bursting of a special patient is difficult to perceive, the medical rheumatism immunology department detection auxiliary equipment comprises a fixing mechanism, an adjusting assembly, an irradiation assembly and an extrusion assembly, through a thread driving mechanism of the adjusting assembly, the distance between the two supporting frames can be flexibly adjusted and controlled, effective adjustment of the leg bending angle is achieved, rubber rods can be synchronously extruded, semi-wrapping type supporting is formed on joints, thighs and shanks after the rubber rods are bent, in addition, the irradiation assembly can accurately adjust the position of the positioning frame, and the positioning accuracy is improved. The irradiation lamp is used for projecting light to the joint surface, and medical staff are assisted in accurately detecting the position, size and boundary of the joint capsule by observing the reflection, transmission and other conditions of the light on the joint surface, so that the position of the joint capsule of a special patient is accurately confirmed, and powerful support is provided for detection work of the rheumatism immunology department.

The application relates to the technical field of femoral head necrosis treatment, in particular to a bionic artificial balloon type half hip joint, which comprises a sleeve, a femoral neck, a fixing screw and a femoral neck limiting nut, the sleeve is fixed on a femur through the fixing screw, the femoral neck is slidingly connected in the sleeve, a balloon is fixed on the outer periphery of the top section of the femoral neck, the inside of the femoral neck is hollow, and a side hole is arranged at the top end of the femoral neck and communicates with the balloon, and the femoral neck limiting nut is used for being fixed in the sleeve to position the femoral neck. The balloon type femoral head is compared with the metal and ceramic femoral heads, the balloon type femoral head is more matched with the shape of the acetabulum in terms of shape, the elastic modulus of the balloon type femoral head is equivalent to that of the bone cartilage of the acetabulum, the balloon type femoral head is beneficial to cartilage nutrition, and the wear of the bone cartilage of the acetabulum is small; the balloon is in a shriveled state when no filler is filled in the balloon, the balloon can be placed in the femur along the sleeve, the joint capsule and the medullary cavity do not need to be opened, the trauma is small, the risk of subsequent infection and dislocation is small, meanwhile, the prosthesis wear can be replaced through the sleeve, and the replacement is convenient and fast and can be completed under local anesthesia.

The invention relates to the technical field of medical prostheses, in particular to a hip joint prosthesis with a bionic joint capsule and application of the hip joint prosthesis with the bionic joint capsule. A joint sliding capsule is additionally arranged between an acetabular cup and a femoral stem, so that the acetabular cup and the femoral stem can be stably and reliably connected, and ball socket stability is provided for initial postoperative recovery; meanwhile, mechanical support can be provided for tissue repair, and fusion of ligament and joint capsule soft tissue is promoted; the joint slide bag is of a porous structure, external tissue fluid flows in, is stored and is lubricated through the porous structure, and direct contact between friction pairs is reduced, so that the friction coefficient is reduced, and the wear resistance of the prosthesis is improved.

The invention belongs to the technical field of biology, and discloses application of a composition of neoagaro-oligosaccharide and astaxanthin in preparation of a transdermal drug for treating osteoarthritis and a composite gel preparation. The composition provided by the invention comprises neoagaro-oligosaccharide, astaxanthin, carbomer and alginate in a mass ratio of (1-10): (1-10): (0.01-0.5): (0.1-1), and can realize efficient enrichment of neoagaro-oligosaccharide and astaxanthin in an articular cavity through a substance diffusion path of skin penetration, deep tissue diffusion, joint capsule permeation and articular cavity enrichment, so that the content of neoagaro-oligosaccharide and astaxanthin in the articular cavity is improved, and the content of astaxanthin in the articular cavity is reduced. The new agar oligosaccharide and the astaxanthin have an excellent synergistic effect, so that the acute inflammation symptom of gouty osteoarthritis can be efficiently relieved, the progress of the disease course is blocked, the pathological change of joint tissue is repaired, and the new agar oligosaccharide and the astaxanthin have an excellent application prospect in preparation of the transdermal medicine for treating osteoarthritis.

The application belongs to the technical field of biotechnology, and discloses application of a new sialyloligosaccharide and astaxanthin composition in preparation of a transdermal drug for treating osteoarthritis and a composite gel preparation. The composition provided by the application comprises new sialyloligosaccharide, astaxanthin, carbomer and alginate with a mass ratio of (1-10):(1-10):(0.01-0.5):(0.1-1). The composition can realize efficient enrichment of the new sialyloligosaccharide and astaxanthin in the joint cavity through a diffusion pathway of skin penetration, deep tissue diffusion, joint capsule penetration and joint cavity enrichment of the substance, and the new sialyloligosaccharide and astaxanthin have excellent synergistic effects, can efficiently relieve acute inflammatory symptoms of gouty osteoarthritis, block the disease progression and repair the joint tissue pathological changes, and have excellent application prospects in preparation of the transdermal drug for treating osteoarthritis.

The invention relates to the technical field of teaching instruments, and provides a joint training model to solve the problem that the palpation training effect of trainees is poor due to the fact that a current joint model cannot simulate the real pathological hand feeling. The device comprises a simulated humerus, a simulated ulna and radius and a simulated muscle connecting the simulated humerus and the simulated ulna and radius. One end of the simulated ulna and radius is provided with a glenoid fossa, and the glenoid fossa comprises a mounting seat connected with the end part of the simulated ulna and radius, a rough surface fossa layer arranged at one side of the mounting seat, a sliding rod arranged at one side of the rough surface fossa layer, a compression spring sleeving the sliding rod, and a sliding surface fossa layer arranged at one end of the sliding rod; one end of the simulated humerus is provided with a humerus head, the surface of the humerus head is a spherical surface, and the humerus head is coated with a joint capsule; through the adjustable joint fossa structure and the inflatable joint capsule, pathological signs of friction feeling of cartilage abrasion and stiffness feeling of joint capsule contracture are simulated respectively, and quantifiable and repeatable palpation training conditions are provided for students.

To provide a rotator cuff tear shoulder arthritis model animal and a method of producing a rotator cuff tear shoulder arthritis model animal, capable of more faithfully reproducing the pathology of rotator cuff tear shoulder arthritis.SOLUTION: A rotator cuff tear shoulder arthritis model animal is a rodent in which the supraspinatus, infraspinatus, superior joint capsule, and biceps longus tendons in the ipsilateral glenohumeral joint have been dissected.SELECTED DRAWING: Figure 1

The utility model discloses a guide baffle for patella outer side supporting belt joint capsule external debonding operation, which relates to the technical field of medical instruments and comprises a guide plate, edges on two sides of the guide plate are gradually recessed towards the middle to form an arc-shaped sliding groove, and the arc-shaped sliding groove of the guide plate is gradually lowered and narrowed from one end to the other end. The width of the arc-shaped sliding groove of the guide plate is gradually narrowed from the high end to the low end, and the low end of the arc-shaped sliding groove of the guide plate penetrates through the gap between the joint capsule and the outer side supporting belt. The whole guide plate penetrates through the gap between the joint capsule and the outer side supporting belt, and a protection channel is established between the joint capsule and the outer side supporting belt, so that it is ensured that a release path is accurately found in a subcutaneous tunnel, deviation is avoided, the success rate and speed of an operation are improved, meanwhile, the integrity of the joint capsule is comprehensively protected, and the working efficiency is improved. And by adopting the guide plate, the subcutaneous tunnel separation area in the operation can be reduced, and large damage to subcutaneous blood vessels is avoided.

A device for palpating and penetrating a joint capsule of a subject includes a shaft having a distal tip configured for palpating the joint capsule of the subject; a needle disposed within the shaft and configured to penetrate the joint capsule of the subject; and a handle coupled to the shaft and comprising a slider configured to translate the needle between a retracted state in which a distal end of the needle is retracted within the shaft and a fully deployed state in which the distal end of the needle fully extends from the distal tip of the shaft.

The invention discloses an orthopedic postoperative traction rehabilitation nursing device which comprises a right-angle frame, a leg supporting frame, a pushing device, a foot supporting device, a swinging device, a balancing weight and a traction overload protection device, the leg supporting frame is rotatably arranged on the right-angle frame, and a leg bandage is arranged on the leg supporting frame; the pushing device is arranged below the leg supporting frame, and the pushing end of the pushing device is pivotally connected with the bottom of the leg supporting frame; the foot supporting device is arranged on the leg supporting frame in a sliding mode and abuts against the pressure sensor through pulling of the balancing weight, the driving end of the swinging device is connected with the rotating end of the leg supporting frame, and the swinging end of the swinging device is connected with the rotating plate; the traction overload protection device is arranged under the balancing weight and electrically connected with the pressure sensor through the controller. Postoperative detumescence can be accelerated, foot joint capsule adhesion and muscle disuse atrophy can be avoided, and the risk of joint fibrosis is reduced.

1. The name of this design product: Joint Capsule. 2. Purpose of this design product: This design product is used for pest control and capture. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: use the status reference diagram. 5. The design for which protection is sought includes color.

The invention discloses a degradable bone and ligament composite repair guide device, which is implanted in a bone defect part or a ligament repair area needing mechanical support and tissue regeneration guide of a human body, and comprises a bone end, a transition area and a ligament end, wherein the bone end is implanted into the end part of a long bone of a human body or the surface of an irregular bone and covers a metaphyseal cancellous bone area around a ligament attachment point, and the bone end is made of a porous titanium alloy material; the ligament end covers the ligament fracture part, and the ligament end is a collagen nanofiber membrane; the transition area is located between the bone end and the ligament end and covers the junction area of the bone and the ligament and the joint capsule attachment point. The three-section type structural design of the bone end, the transition area and the ligament end is adopted, bone tissue, a bone and ligament junction area and ligament tissue are repaired and guided, and integrated synergistic repair of the bone and the ligament is achieved.

Method for producing a defined bone fracture with accompanying soft tissue injuries in a preparation (106) comprising bone and soft tissue mantle, where the term soft tissue mantle is understood to mean all the body's own tissue surrounding the bone of a specimen (106), including muscles, ligaments, tendons, joint capsules, nerves, skin and vessels, wherein a device (100), (200) is used to carry out the method, which i. at least one guide column (118), (218), ii. at one end of the guide column (118), (218) a base plate (101), (201), iii. a crossbeam (109), (209) with stamp (111), (211), iv. at least one means (110), (210) for adjusting the damping upon impact of a defined mass, v. at least one clamping plate (107), (207) for fixing the specimen, vi. a mass (112), (212) and, if necessary, additional weight (113), (213) for setting the defined mass, vii. at least one further cross member (115), (215) with at least one releasable holding mechanism (114), (214) for positioning the defined mass and means for fixing the preparation (102), wherein shock absorbers are used as means for adjusting the damping upon impact, characterized in that a defined force impulse is exerted on a fixed preparation (106) and the change in the length of the preparation (106) along the force vector is limited to a maximum of 80 mm by setting a defined compression and a defined damping by means of shock absorbers, wherein a) the defined bone fracture is a distal radius fracture, b) a preparation (106) comprising or consisting of hand and forearm is selected, c) a defined mass of 16.6 to 23.1 kg is set, d) the preparation (106) is aligned in a defined geometry with respect to the direction from which the defined mass impacts the preparation (106) when the holding mechanism (114), (214) is triggered, by means of means for fixing the preparation (102), e) the defined speed is set to 76 to 110 cm by means of the fall height of the defined mass, f) the defined compression is set to 20 to 36 mm with at least one shock absorber, g) the defined damping is set as the damped part of the defined compression to 5 to 17 mm, h) the holding mechanism (114), (214) is triggered, i) the preparation (106) is removed from the device (100), (200).

The utility model relates to a joint capsule distraction device for elbow arthroscopic surgery, which belongs to the field of joint capsule distraction devices and comprises an intervention rod. The adjusting protection assembly is arranged on the inner side of the intervention rod and comprises a supporting plate arranged on the inner side of the intervention rod and a lead screw rotationally arranged on the inner side of the supporting plate; the mounting block is rotatably arranged on the right end surface of the screw rod; the protection block is arranged on the right side of the mounting block; the deformation piece is arranged on the inner side of the intervention rod, and the protection block is located on the inner side of the deformation piece. By arranging the adjusting protection assembly, after an intervention rod is placed into a joint capsule of a patient, a protection block is moved to the outer side of the intervention rod, so that the joint capsule cannot be hurt when the intervention rod expands the interior of the joint capsule through the protection block, meanwhile, the protection block can be better moved into the intervention rod through a deformation piece, and therefore the joint capsule can be more effectively protected. Therefore, injury to the patient when the intervention rod is pulled out of the joint capsule of the patient is avoided, and the practicability of the distraction device is improved.

The invention relates to the technical field of robots, and discloses a bionic toe joint capsule structure for a robot foot and a preparation method thereof.The bionic toe joint capsule structure comprises a joint capsule body, the joint capsule body is made of a high-strength thermoplastic polyurethane material, and the whole joint capsule body is of a closed flexible capsule bag structure; one end of the joint capsule body is provided with a first connector matched with a mechanical phalanx of a robot foot, the other end of the joint capsule body is provided with a second connector matched with a mechanical metatarsal of the robot foot, and the first connector and the second connector are both communicated with the interior of the joint capsule body. According to the bionic toe joint capsule structure, an integrated 3D printing forming mode of regional hardness gradient design, a fiber reinforced layer structure and an internal lubricating system is adopted, so that the bionic toe joint capsule structure has the characteristics superior to the prior art in the aspects of mechanical property, movement stability, lubricating property and durability.

FIELD: traumatology; orthopedics.SUBSTANCE: used for arthroscopy of the hip joint to eliminate Cam or combined types of femoroacetabular impingement. A proximal anterolateral port is created to the peripheral portion of the hip joint, which is used as a viewing port at the beginning of the operation; 4 cm distal and 2 cm lateral to the intersection of the midline of the femur and the perpendicular drawn to it through the apex of the greater trochanter, an anterior port is created, which is used as an instrumental port at the beginning of the operation. The deformation zone is brought to the bone burr, changing the positions of flexion and extension, internal and external rotation of the lower limb, and until the appearance of spring resistance of the fibers of the lateral joint capsule and the ileofemoral ligament, resection of excess bone mass of the anterior surface of the proximal femur within the boundaries of the Cam-deformation is performed. The viewing and instrument ports are changed and the deep fibers of the proximal joint capsule and the ileofemoral ligament are released from the acetabulum. In the presence of Pincer deformity, soft tissues are removed to visualize excess bone mass within the boundaries of the Pincer deformity, and resection of excess bone mass of the anterolateral edge of the acetabulum within the boundaries of the Pincer deformity is performed until radiographic visualization of the absence of intersection of the anterior and posterior edges of the acetabulum. The viewing and instrument ports are replaced. An arthroscope is positioned on the outer edge of the joint capsule fibers, and bone resection of the posterolateral surface of the proximal femur is completed within the boundaries of the Cam deformity by inserting a bone burr from the skin incision of the anterior port into the capsule opening of the proximal anterolateral port, preserving the fibers of the joint capsule and the ileofemoral ligament.EFFECT: method ensures correction of the proximal femur within the boundaries of the Cam-deformation while maintaining the integrity of the structures of the passive capsular-ligamentous stabilizers and eliminates the development of complications in the form of microinstability of the hip joint, anterior dislocation of the femoral head, heterotopic ossification due to maintaining the integrity of the structures of the passive capsular-ligamentous stabilizers and eliminating the development of microinstability of the hip joint, anterior dislocation of the femoral head and heterotopic ossification.1 cl, 1 ex

A double ball and socket joint is formed of a two-piece capsule. Each piece of the capsule carries a ball and extension combination that operates rotationally within a socket. The extensions exit the capsule through void spaces at both distal ends of the capsule. The two pieces of the capsule are preferably in snap-fit engagement. The result is that the double ball and socket joint of the present invention provides infinite combinations of rotation about five axes of rotation: a first and a second axis of rotation about the first ball, a third and a fourth axis of rotation about the second ball, and a fifth axis of rotation is provided when the two pieces of the capsule are rotated relative to one another.

The invention relates to the technical field of oral disease animal model construction methods, in particular to a construction method of a traumatic temporomandibular ankylosis animal model. The construction method comprises the following steps: selecting an anterior auricular region on one side of an experimental subject, avoiding temporal superficial artery and vein, passively separating from front to back along a zygomatic arch to a joint capsule, exposing a mandibular condylar process neck and part of the zygomatic arch, and separating a condylar process after opening the joint capsule; the outer side attachment of the joint disc is separated through the joint gap, the peripheral attachment of the joint disc is cut off after the joint disc is exposed, and part or all of the joint disc is removed; the joint space is exposed through horizontal blunt separation of the joint capsule, part of fibrous cartilage on the condylar process head is removed, and fossa articular cartilage is damaged; after being sober, the animals eat soft food, and the traumatic temporomandibular joint ankylosis animal model is obtained. Modeling is carried out in the mode that the condyle process and the temporal bone glenoid fossa part fibrous cartilage and the articular disc are removed in a surgical operation mode, and the animal model established in a composite trauma mode fits the complex pathological environment of human diseases.