31 results about "Coracoid process" patented technology

In a first aspect the present invention provides a glenoid prosthesis assembly for use in shoulder joint arthroplasty to address conditions where deterioration of the rotator cuff mechanism of the shoulder joint is severe, the assembly comprising a first shell component to be affixed to a scapula by fixing means, and a smaller second component adapted to nest within the first component and having an articulation surface for articulating with a humeral head, the first component being over-sized relative to the glenoid surface of a scapula whereby the first component may be first affixed to at least two of the glenoid, acromion and coracoid processes of the scapula in use by the fixing means and the second component may be cemented in place within the first component allowing initial adjustability in the poise of the second component relative to the first component. Amongst other aspects the invention also provides a modular proximal humeral prosthesis system for use in shoulder joint arthroplasty which enables the proximal humeral prosthesis to be changed between anatomical and reverse of anatomical configurations to address differing degrees of shoulder joint deterioration.

A glenoid component for treatment of rotator cuff arthropathy includes attachment to the coracoid process by a pin or post imbedded into a hole formed in the coracoid process. The glenoid component preferably also has a keel for extending into the glenoid fossa and protrusions such as ridges cemented to the acromion process. This way, an attachment point is preferably provided in/on the coracoid process, the acromion process, and the glenoid fossa, and at least two of the attachment points include a protrusion extending into a hole/slot drilled or otherwise formed in the bone. A jig is used for guiding/drilling into the bone, wherein the jig has both a glenoid fossa drill guide and a coracoid drill guide. The coracoid drill guide includes structure that abuts against opposing sides of the base of the coracoid process to prevent rotation of the jig relative to the scapula.

The invention relates to a guide device for coracoclavicular ligament reconstruction. The guide device comprises a guide plate, a guide pipe, a positioning rod and a coracoid positioning hook. The guide device is characterized in that the guide plate is in circular arc shape, one end of the guide plate is provided with a guide hole, the guide pipe is arranged in the guide hole, and the other end of the guide plate is provided with a positioning rod; The guide plate is formed by connecting a first circular arc guide plate body and a second circular arc guide plate body which are inserted into each other oppositely; the axis of the linear segment of the positioning rod and the axis of the guide pipe intersect with each other at the circle center of the circular-arc-shaped guide plate; the coracoid positioning hook is in a U shape, the width of the U-shaped coracoid positioning hook is matched with the width of the coracoid bottom, and the center of the upper surface of the U-shaped bend is located in the circle center of the circular-arc-shaped guide plate. By means of the guide device, the accuracy of the constructed bone tunnel space position is guaranteed, and the reconstruction requirements of different individual differences are met.

The invention discloses a surgery binocular locator, which is used for an Laterjet surgery under an arthroscope. The surgery binocular locator comprises a main body and a positioning sleeve, wherein the main body comprises a base; one end of the base is provided with a long cylindrical projection part; and the top end of the projection part is provided with a hook part. The surgery binocular locator related by the invention can effectively solve the problem of processus coracoideus fixation under the arthroscope; an arthroscope bone implant can be fixed in a proper position of the cavitas glenoidalis under the arthroscope; and a good operation effect is achieved.

The invention relates to an ulna coracoid process lateral column steel plate. The steel plate comprises a head portion and a plate body. The plate body comprises a cross support plate and a vertical support plate. The head portion is arranged above the cross support plate and is connected with the cross support plate through a spiral section, the included angle formed between the head portion and the cross support plate is in a range of 25 degrees to 30 degrees, and the included angle formed between the cross support plate and the vertical support plate is in a range of 155 degrees to 160 degrees. One to two first locking holes are formed in the vertical support plate and are third locking holes with internal threads or locking pressurizing holes formed by partial overlapping of pressurizing hole grooves and spiral hole portions. The steel plate is matched with the ulna coracoid process lateral column anatomic form, and accordingly, the steel plate can be attached to the fracture portion well, the broken bone face can be well fixed, and a good operation effect is obtained.

The invention discloses a method for adopting a loop steel plate for treating ulna coracoid process fractures. A bone plate with a hole is involved. Steel wires are installed on the bone plate. The method comprises the steps of bony occlusion structure anatomy, operative treatment, coracoid process fracture treatment, elbow joint outer side accessory ligament treatment; elbow joint inner side accessory ligament treatment; external fixing; post-operation C-arm perspective treatment; post-operation rehabilitation training. According to the method for adopting the loop steel plate for treating the ulna coracoid process fractures, scholars at home and abroad obtain an operation method by means of a large number of biomechanics and clinic tests, the method is relatively simple, operative wounds are relatively small, medical cost is low, the operation result is effective, the inner fixing mode conforming to the biomechanics characteristic is used for treating complex elbow joint fracture dislocation. The concentric circle center of the elbow part is reconstructed for resetting. The method is easy to operate, and the wounds are small, fixing is firm, early-stage function exercising is allowed, and the clinic effect is good.

Customizable scapular anchor (1) for fixing a glenoid component of a shoulder joint prosthesis to a patient's scapula with compromised anatomy, comprising a glenoid support (2), said glenoid support (2) being defined by a pin element (3) for fixing said glenoid component to said scapular anchor (1) and by a flange (4) integral with said pin element (3), said flange (4) having a distal surface (5) adapted to be placed at least partially in contact with a glenoid cavity of said scapula and a proximal surface (6) opposite said distal surface (5); wherein at least one customized portion (5, 7, 8) is specifically shaped with respect to the bone morphology of a single patient's scapula with compromised anatomy; the customized portion (5, 7, 8) comprises at least one coracoid support projection (7) arranged to abut at a coracoid process (52) of the scapula (50).

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.

The invention relates to the technical field of medical instruments, in particular to a coracoclavicular fixator which is used for fixing a coracoid and a clavicle when an acromioclavicular joint dislocation or a fracture of a clavicle outer end occurs. The coracoid clavicle fixator comprises a coracoid portion (1), a clavicle portion (2) and fixing bolts (3), wherein the coracoid portion is composed of a coracoid hook (11) and a hook rod (12), the hook rod (12) is provided with a plurality of hook rod screw holes (13), the clavicle portion is composed of a clavicle fixing hook (21) and a link casing pipe (22), the link casing pipe (22) is provided with a plurality of casing pipe screw holes (23), the hook rod (12) of the coracoid portion is inserted into the link casing pipe (22) of the clavicle portion, and then the fixing bolts (3) are inserted into the screw holes to fix the coracoid portion (1) and the clavicle portion (2) to be a whole. The coracoid clavicle fixator is simple in structure, convenient to operate, small in trauma, reliable in reduction fixation and capable of effectively fixing the coracoid and the clavicle, and can meet biomechanics requirements.

The invention provides a reconstruction positioning device for a coracoclavicular ligament. The device comprises an inner rod and an outer rod, and the outer rod can slide in the axial direction relative to the inner rod; the inner rod comprises a guiding portion, a resetting portion and a hook, and the guiding portion, the resetting portion and the hook are sequentially arranged in the length extending direction of the inner rod; an included angle is formed by the guiding portion and the resetting portion in the length extending direction, and the guiding portion is embedded into and installed in an axial open hole of the outer rod; the guiding portion and the resetting portion are formed integrally, and the resetting portion and the hook are integrally formed or connected in a fastened mode; a locking structure is arranged on the outer rod and can limit axial relative sliding between the outer rod and the inner rod. The reconstruction positioning device can be applied to resetting and fixing between a coracoid and a clavicle, and guide drilling of a bone tunnel; in addition, the reconstruction positioning device can help penetration of the ligament in the bone tunnel, and guarantees operation convenience and minimally invasive performance.

The invention provides an ulna coracoid process anatomical locking plate, and belongs to the field of medical instruments and apparatuses. The ulna coracoid process anatomical locking plate has good anatomical plasticity and can narrow the incision exposure range so as to reduce iatrogenic injuries. The ulna coracoid process anatomical locking plate comprises a steel plate body with bending radian of 44+/-2.3 degrees. The steel plate body comprises a head part and a handle part which are integrally connected. The width of the head part is larger than that of the handle part, and the width gradually decreases from the front end of the head part to the tail end of the handle part. A first locking hole is formed in the head part, near row steel needle holes are formed between the first locking hole and the front end of the head part, a slide hole, a far-end locking hole and 2-3 second locking holes which are linearly arrayed are formed in the handle part, and the tangential angle between the central vertical line of the first locking hole and the plane where the lower surface of the first locking hole is located is 63+/-5.4 degrees. The ulna coracoid process anatomical locking plate can be used for the restoration or reconstruction process of ulna coracoid process.

The invention relates to a coracoclavicular ligament fixing device for acromioclavicular dislocation and belongs to the field of medical instruments. The coracoclavicular ligament fixing device comprises a carrier, a push rod, pins, an elastic claw and a sleeve, wherein the carrier is connected with the elastic claw through the pins, the detachable push rod is arranged at the center of the carrier, screw holes are arranged at the lower portion of the carrier, and the sleeve is sleeved out of the carrier. The carrier can be pushed forwards when the push rod bears with external force. The elastic claw opens up when the carrier and the elastic claw are pushed out of the sleeve. The coracoclavicular ligament fixing device for the acromioclavicular dislocation is simple in operation, and the sleeve can easily penetrate through bone holes on the coracoid. When opening up, the elastic claw can be firmly hung in the bone holes and can not fall off to lose efficacy when shoulders of a patient move, so that pain caused by reoperation and suffered by the patient is avoided.

The invention discloses an adjustable surgical positioner. The adjustable surgical positioner includes a main body, two adjusting handles, a connecting mechanism and a positioning sleeve. One end of each adjusting handle is connected to the tail end of the main body through the connecting mechanism, and the two adjusting handles are symmetrically arranged on the two sides of the main body; the other end of each adjusting handle is connected to the positioning sleeve, and a hook is arranged at the front end of the main body. After the main body is positioned, the angle between the two adjustinghandles is adjusted through the connecting mechanism for positioning of the positioning sleeve. By adopting the adjustable adjusting handles, the problem that it is difficult to fix the coracoid process during surgery under an arthroscope can be effectively solved, and the coracoid process can be fixed to an appropriate glenoid position through adjustment of the adjusting handles to enable the surgery to be carried out smoothly.