64 results about "Acromioclavicular joint" patented technology

A reconstruction system and method for fixation of bone to bone, or soft tissue to bone. The reconstruction system comprises two fixation devices (for example, two buttons) joined by a continuous loop of flexible material. Each button is provided with at least one opening that allows the passage of the flexible material. The button may be formed, for example, of metal, PEEK or PLLA. The flexible material may be FiberWire® suture.

A surgical fastener system for acromioclavicular (AC) joint dislocations, includes a first fastener having an elongate body, and an inner pair of openings centered on the long axis of the body. A closed loop stitch passes through the openings, and the length of the stitch corresponds to the depth of a passage defined between the top of a first hole bored through a patient's clavicle, and the bottom of a second hole bored through the coracoid in axial alignment with the first hole. A second fastener has an elongate body arranged to slide under a portion of the loop stitch that protrudes from the top of the hole in the clavicle, after the first fastener is set beneath the coracoid and the stitch is pulled upward through the passage. In an alternate embodiment, the second fastener also has an inner pair of openings for passing and engaging the loop stitch.

A system is disclosed for repairing and reconstructing a joint which has been injured by trauma, and especially an acromioclavicular joint. Means are disclosed to strengthen the repair or reconstruction and to maintain alignment while the ligaments in the joint heal, thus allowing more aggressive rehabilitation. A new joint repair tool is disclosed which is inserted into two separated bones adjacent to their respective articular joint surfaces to connect the two bones and approximate the adjacent bearing articular joint surfaces while still allowing motion between the two bones. Instruments to perform the methods are also disclosed.

Methods and systems for AC joint repair using a fixation device having a specific “dog bone” configuration in a minimally invasive approach. One AC fixation system is formed of dog bone shaped buttons and at least one suture tape used to secure the buttons during an AC joint repair. The buttons are provided with openings that allow the passage of suture/tape limbs. Another AC joint fixation system is formed of a metal button inserted over a fused/joined construct having multiple flexible strands. The fused/joined construct is formed of multiple independent and separate suture strands and/or suture tapes that are joined (fused together) at about the midpoint of the tapes and/or sutures, resulting in multiple independent limbs of suture/tape. A suture tape loop construct having an integrally formed eyelet at one end of the loop may also be used in the fixation systems.

The invention provides a tendon or ligament prosthesis having an undeployed configuration and a deployed configuration. The prosthesis has a resistance to tension in the undeployed configuration that is less than its resistance to tension in the deployed configuration. In the deployed configuration, the prosthesis is capable of twisting and bending. In one embodiment, the prosthesis has a meshwork of filaments woven, knitted or braided into a slender cylinder. In this embodiment, the prosthesis attains the deployed configuration by stretching the prosthesis from its undeployed configuration. The prosthesis may be used, for example, to replace an anterior or posterior cruciate ligament or to treat acromioclavicular joint separation, a rotator cuff tear, lateral collateral ligament tears, medial collateral ligament tears, or medial patello-femoral ligament tears. The invention also provides a method for replacing a tendon or ligament using the prosthesis of the invention.

A support device for a wearer is provided, including an anchor member, a first strap and a second strap. The anchor member is fittable around the torso of the wearer. Each strap has a first end and a second end and connects to the anchor member at the first and second ends. Each strap has a shoulder-engaging portion that is shaped to engage a shoulder joint of the wearer. The straps are each adapted to carry a tensile force and thereby exert a rearward force on the shoulder joint through the shoulder-engaging portion. The straps are configured to engage the shoulders of the wearer no further medially than the acromioclavicular joints. Each strap extends along a path that, in use, does not cross over the anterior axillary folds of the wearer.

The invention discloses a reduction stabilization device for clavicle fracture and acromioclavicular joint dislocation, and belongs to the technical field of orthopedic medical apparatuses and instruments. The device is used for the stable reduction of the clavicle fracture and the acromioclavicular joint dislocation. The technical scheme is that: the device consists of a bedplate, a carrier plate, a jacking mechanism, a fastening belt and a bed frame, wherein the carrier plate is a rectangular plate, and is embedded in the front middle part of the bedplate; the two sides and the lower part of the carrier plate are surrounded by the bedplate; the longitudinal axis of the rectangular carrier plate is overlapped with the longitudinal axis of the bedplate; a horizontal edge on the lower partof the carrier plate is connected with a notch of the bedplate through hinge shafts; the jacking mechanism is arranged below the carrier plate; the upper end of the jacking mechanism is connected with the lower surface of the carrier plate; a plurality of fixing rings are fixedly arranged on bedplate end parts on the two sides of the carrier plate and the outer edges of the bedplate; and the two ends of the fastening belt are threaded in the fixing rings. The device has an ingenious design and a simple structure, and is popular with medical staff and patients; the stable reduction of the clavicle fracture and the acromioclavicular joint dislocation can be effectively realized; the pains of the patients are alleviated, and the difficulty in an operation is reduced; and extraordinarily goodeffects are achieved.

The acromioclavicular joint prosthesis of the present invention provides a mechanism for securing the distal or outer end of the clavicle to the acromion of the scapula. The present prosthetic device includes an acromion attachment component, an opposite clavicle attachment component, and an articulated joint between the two components. The intermediate joint may include a “breakaway” component, allowing the joint to be temporarily misaligned in the event that a severe force is applied to the shoulder, rather than damaging the joint or shoulder structure. The breakaway joint may be quickly and easily realigned by a medical professional. The joint may also include a spring loaded shock absorption component as well, to avoid damage to the joint due to excessive tensile forces. Tools and a method for surgically installing and locking the present prosthesis securely to the respective bones of the skeletal structure, are also disclosed.

The invention relates to an acromioclavicular joint elastic micro-motion fixing plate and belongs to the technical field of human body implants. The acromioclavicular joint elastic micro-motion fixing plate is composed of a micro-arc-shaped main plate, two U-shaped structures, a left twisting plate and a right twisting plate. The left twisting plate and the right twisting plate are symmetrically manufactured at one end of the micro-arc-shaped main plate, the left twisting plate and the right twisting plate are connected with the micro-arc-shaped main plate through the U-shaped structures, and the U-shaped structures can conduct flexible adjustment in the horizontal plane and the vertical plane. The micro-arc-shaped main plate, the left twisting plate and the right twisting plate are provided with fixing holes respectively. The micro-arc-shaped main plate, the two U-shaped structures, the left twisting plate and the right twisting plate fixedly support the three ends of a shoulder blade, control the gap size and the moving range of an acromioclavicular joint, and are suitable for micro motion of the acromioclavicular joint in each direction, firm in fixing, and easy, convenient and accurate to install and position. The problems that an existing hook steel plate structure makes pressure stress of an acromion and the clavicle too large and cannot control the gap size and the moving range of the acromioclavicular joint, operation restoration is prone to being unsatisfactory, a hook slides down from the acromion, and the treatment effect is seriously impacted are solved.

The invention discloses a micromovement fixing plate for the dislocation of an acromioclavicular joint, and belongs to the technical field of osteopathic medical apparatus. The micromovement fixing plate is used for restoration and fixation operation for the dislocation of the acromioclavicular joint and comprises a collarbone positioning plate and an acromion plate, wherein 1 to 3 positioning sleeves are fixed on the front part of the collarbone positioning plate; screw threads are formed in the positioning sleeves; an acromion sleeve is arranged on the rear part of the acromion plate; the acromion sleeve is a through hole and corresponds to the positioning sleeves; a connecting rod is arranged in the acromion sleeve; screw threads matched with the internal screw threads of the positioning sleeves are formed at one end of the connecting rod; and a cylindrical rod cap is arranged at the other end of the connecting rod. In the micromovement fixing plate for the dislocation of the acromioclavicular joint, the collarbone positioning plate and the acromion plate are in sleeve connection. A side shift of the collarbone positioning plate has a micromovement of 5 to 10 degrees with an acromion, so the micromovement fixing plate better accords with physical activity characteristics of the acromioclavicular joint and has the advantages of high fixation strength, contribution to the implementation of a ligament repair operation and low damage to the capsula articularis and surrounding ligaments.

The invention discloses a clamp-type acromioclavicular joint embolia guiding system. The clamp-type acromioclavicular joint embolia guiding system comprises a coracoid side clamp, a clavicle side clamp and a handle, wherein a spherical base is arranged at the clamp tip of the coracoid side clamp; a conical tip protrusion is formed at the position, in contact with the coracoid side, on the surface of the spherical base; a rotatable hollow guiding device is arranged at the clamp tip of the clavicle side clamp. The clamp-type acromioclavicular joint embolia guiding system has the advantages that (1) the embolia of an acromioclavicular joint and central linear drilling between the coracoid and the clavicle are completed at a time; (2) drilling guidance is accurate, and the fracture of the coracoid and the clavicle is avoided; (3) by virtue of the accurate drilling guidance and the spherical design of the coracoid clamping end, the injury to important vascular nerves on the inner side of the coracoid during an operation is avoided; (4) the spacing between the clavicle and the coracoid is accurately measured in an outer measurement mode by virtue of a graduated scale at the far clamping end, so that the appropriate length of a loop needed by embolia fixing is selected; (5) the instrumentation is simple, convenient and safe, the operation wound is minimized, and a true minimally invasive effect is achieved.

The invention provides a memory alloy type acromioclavicular joint injury and clavicle fracture fixator. The memory alloy type acromioclavicular joint injury and clavicle fracture fixator is formed by a fixing main board 1, at least two fixing holes 2, a coracoid pulling bending hook 3 and snap rings 4; the fixing holes 2 are uniformly formed in the surface of the fixing main board 1; the end surface of one side of the fixing main board is provided with the coracoid pulling bending hook 3; the snap rings 4 can be arranged on the bilateral sides of the lower surface of the fixing main board 1 respectively; the coracoid pulling bending hook 3 and the snap rings 4 are formed by memory alloy. According to the memory alloy type acromioclavicular joint injury and clavicle fracture fixator, the structure is simple and the design is reasonable; the fixation is firm, the further injury to the acromioclavicular joint is reduced, the enough stability can be provided for the injured ligament or clavicle healing, and the disease rehabilitation of patients is facilitated due to the elastic fixation; the operation is convenient and accordingly the treatment time can be saved for the patients.

The invention relates to an acromioclavicular elastic fixing plate and belongs to the technical field of implants in a human body. The fixing plate comprises an upper fixing plate body, a lower fixing plate body and an elastic deformation structure. The upper fixing plate body and the lower fixing plate body are fixedly connected through the two ends of the elastic deformation structure. Upper fixing plate fixing holes and lower fixing plate fixing holes are manufactured in the upper fixing plate body and the lower fixing plate body respectively. The elastic deformation structure, the upper fixing plate body and the lower fixing plate body are used for elastically fixing an acromioclavicular joint, the acromioclavicular joint can restore an original anatomical corresponding relationship to the largest extent, fixation is firm, installation and positioning are easy and accurate, pain of patients is greatly reduced, and the healing effect is good. The problems that due to an existing hook plate structure, compressive stress on acromion and clavicle is too large, the effect of fixing exo-clavicular comminuted fracture and acromioclavicular joint dislocation is poor, patients feel pain, have compression feeling and are unhooked and afraid of activities, an elasticity attenuation capacity of an elastic structure is poor, the long-term effect is not ideal, and the treatment effect is severely affected are solved.

A device that allows for the predictable/guided anatomic drilling of claviclular tunnels for graft, suture, or combined graft/suture reconstruction of the AC joint is provided. The device simultaneously allows for larger clavicle tunnels which permit graft passage while providing protection, via stress shielding, of the bone between and adjacent to the bone tunnels. In this way, the surgeon is able to utilize anatomically placed clavicular tunnels large enough for graft passage (which reduces the mechanical failure rate of the reconstruction and most closely replicates normal anatomy) while reducing the risk of clavicle fracture, which has plagued other “anatomic reconstruction” techniques.

The invention relates to a plate for fixing dislocated acromioclavicular joint, belonging to the technical field of the orthopedic medical device. The plate for relocating and fixing the dislocated acromioclavicular joint comprises a clavicle positioning plate, an acromion plate and a side fork. The clavicle positioning plate is a rectangular steel plate, and 2 to 5 positioning holes are longitudinally distributed on the surface of the rectangular steel plate; the acromion plate is a rectangular steel or titanium plate, the front part of the acromion plate narrows gradually, the front end is sharp, and the rear part is arranged on one side of the clavicle positioning plate and is connected into a whole body with the front part of the clavicle positioning plate; the side fork is connected to the lower part of one side of the acromion plate and is arranged parallel to the longitudinal axis of the acromion plate; and a gap is left between the side fork and the acromion plate. When the plate for fixing dislocated acromioclavicular joint is in use, the clavicle positioning plate is fixed on the clavicle, the side fork is inserted to the center of the cortex on the upper side and the lower side of the acromion or is arranged below the acromion, and the acromion plate is fixed on the acromion. The plate for fixing dislocated acromioclavicular joint has high fixing strength, is good for repairing the ligament, can avoid the occurrence of the acromion impingement syndrome and cause little damage to the acromioclavicular joint capsule and the ligament around the same.

The invention relates to medical instruments, in particular to an acromioclavicular joint closed reduction suturing device. The acromioclavicular joint closed reduction suturing device comprises a left caliper body and a right caliper body, wherein the middle parts of the left caliper body and the right caliper body are rotationally connected through a rotating shaft; a lower supporting locator is arranged on the front end of the left caliper body; the lower supporting locator comprises sleeves arranged on two ends and a connecting pipe arranged at the middle part; the connecting pipe is communicated with the inner parts of the sleeves; a strip-shaped seam which is convenient for wire drawing is formed in one side, facing a bone surface, of the lower supporting locator; the strip-shaped seam is coherently formed in the sleeves and the connecting pipe and is used for communicating the inner parts and the outer parts of the sleeves and the connecting pipe; an upper supporting locator is arranged on the front end of the right caliper body; the upper supporting locator comprises spiral propulsion structures arranged on two ends and used for leaning against and fixing the bone surface and a connecting arm arranged at the middle part. According to the acromioclavicular joint closed reduction suturing device provided by the invention, a to-be-sutured clavicle can be stabilized and fixed through the lower supporting locator and the upper supporting locator, the center of the clavicle can be accurately found, the perforating success rate is increased, and acromioclavicular joints after suturing are enabled not to dislocate any more.

The invention discloses a clavicle repositor more convenient to use and better in resetting effect, and belongs to the technical field of orthopaedics department medical instruments. The clavicle repositor is used for stably resetting the fractured clavicle and the dislocated acromioclavicular joint. According to the technical scheme, the clavicle repositor comprises a resetting tray, an ejector mechanism and shoulder blade pressing plates, the resetting tray is a flat box body and is matched with the back of the human body in area, a groove is formed in the middle of the upper portion of the resetting tray, the ejector mechanism is installed inside the groove, a supporting plate is placed above the ejector mechanism, the two sets of shoulder blade pressing plates are located on the two sides of the upper portion of the resetting tray respectively, and the front ends of the two sets of shoulder blade pressing plates are opposite to the near-ends of the upper limbs of the two sides of the human body. The clavicle repositor is ingenious in design, simple in structure and very convenient to use, the ascending height of an ejector plate can be adjusted, the shoulder blade pressing plates can be adjusted in the multiple directions, a Steinmann pin tie rod can be used for pulling and shifting, the fractured clavicle and the dislocated acromioclavicular joint can be stably reset in a more-effective mode through the structures, the pain suffered by a patient is relieved, the difficulty of a surgery is reduced, a good effect is achieved, and the clavicle repositor is very worthy of being popularized and applied.

The invention discloses a titanium-nickel memory alloy hook toothed nail for treating acromioclavicular joint dislocation and a use method thereof. The titanium-nickel memory alloy hook toothed nail comprises a hook toothed nail made of a titanium-nickel alloy and a hollow push rod, wherein the hook toothed nail comprises a guide post; a plurality of hook claws are arranged on one end of the guidepost; the other end of the guide post is connected with a plurality of leading wires; the hollow push rod is arranged at the end, with the leading wires, of the guide post and is arranged outside theleading wires in a sleeving manner; a limiting member is arranged on the ends, away from the guide post, of the leading wires; a binding post having a diameter smaller than that of the guide post isarranged on the end, away from the hook claws, of the guide post; the leading wires are connected to the binding post; and the hollow push rod is arranged on the binding post in a matching and sleeving manner. According to the invention, the hook claws are firstly straightened in frozen brine at low temperature by utilizing the characteristics of the titanium-nickel memory alloy, and then the hookclaws are pushed into a bone hole of a condyle through the hollow push rod and passes through the bone hole of the condyle, thereby eliminating a series of auxiliary operations; and the guide post and the hollow push rod cooperates to form a straight cylinder, so that a jack operation is very smooth and convenient, and a situation that the hook toothed nail is clamped and pressed is unlikely.