20 results about "Adjacent segment" patented technology

Medical devices with articulation members are described, including a medical device that includes a shaft defining a working channel extending from a proximal end to a distal portion of the shaft. The distal portion of the shaft includes an articulation member comprising a plurality of segments radially outward of the working channel. Each segment may have an arc-shaped cross-section and define at least one aperture, e.g., aligned with the aperture(s) an adjacent segment for receiving a steering wire therethrough. Each segment is pivotable relative to the adjacent segment. The articulation member also includes a rib extending along a longitudinal axis of the shaft and coupled to, or integral with, each segment of the plurality of segments. The rib extends radially outward from the plurality of segments in a direction away from the working channel.

The utility model discloses a spine rod with an elastic structure. The spine rod comprises a rod body, at least part of the rod body extends into the micro-motion block; the check ring is arranged in the micro-motion block and used for limiting the rod body and preventing the rod body from sliding out of the micro-motion block; one end of the elastic piece abuts against the check ring, and the other end of the elastic piece abuts against the rod body. After a spine rod with an elastic structure is implanted into a patient, the bearing force part of a diseased region in a human body is borne by the spine rod, and meanwhile, when the spine moves, the elastic piece can provide proper buffering, a biological force bearing structure of the diseased region can be recovered to the maximum extent, fusion of the diseased region can be promoted, and the medical effect is improved. Meanwhile, the biological force borne by the adjacent sections of the diseased region is shared, the risk that the adjacent sections degenerate due to overhigh bearing force is reduced, the original biological force change of the spine is restored to the maximum extent, the original physiological curvature of the spine of the patient is maintained, and rehabilitation of the patient is facilitated.

Medical devices with articulation members are described, including a medical device that includes a shaft defining a working channel extending from a proximal end to a distal portion of the shaft. The distal portion of the shaft includes an articulation member comprising a plurality of segments radially outward of the working channel. Each segment may have an arc-shaped cross-section and define at least one aperture, e.g., aligned with the aperture(s) an adjacent segment for receiving a steering wire therethrough. Each segment is pivotable relative to the adjacent segment. The articulation member also includes a rib extending along a longitudinal axis of the shaft and coupled to, or integral with, each segment of the plurality of segments. The rib extends radially outward from the plurality of segments in a direction away from the working channel.

The invention provides devices and related methods that reduce complications, such as reduced thrombus formation and / or other enhanced performance, when deployed in a patient. [Solution] A method comprising the steps of introducing fluid into a marked catheter using a marked catheter, the marked catheter having markings including a plurality of separate segments spaced apart along at least a portion of the catheter, wherein the mean shortest distance between each segment and its nearest adjacent segment is a first distance in a first configuration of the marked catheter, and inflating at least a portion of the marked catheter from a first configuration to a second configuration, wherein the mean shortest distance between each segment and its nearest adjacent segment in the second configuration is a second distance, and the ratio of the second distance to the first distance is 1.02:1 or greater and 2:1 or less.

This invention belongs to the field of medical technology and discloses an anatomically optimized spinal disc fusion cage and its design method. Based on the patient's personalized three-dimensional anatomical information of the diseased intervertebral disc, a personalized overall intervertebral fusion cage is designed. The designed overall intervertebral fusion cage is segmented into different types of personalized AOFS intervertebral fusion cages; these different types of personalized AOFS intervertebral fusion cages include, but are not limited to: ALIF (anterior fusion cage), PLIF (posterior fusion cage), TLIF (lateral posterior fusion cage), and LLIF (lateral fusion cage). This invention proposes a novel anatomically optimized spinal disc fusion cage design tailored to individual patients, fully integrating the advantages of simple decompression and decompression plus fusion surgery techniques. Its purpose is to optimize the biomechanical environment of adjacent segments after fusion surgery, reduce or prevent the possibility of reoperation after the initial fusion surgery, and thus prolong the surgical lifespan.

A three-dimensionally adjustable segmented arm (10), which has a centreline (11), comprises a succession of interconnected and relatively rotatable segments (I to VI) positionable in selectable rotational settings relative to one another, and fixing means (18) for fixing the segments in selected rotational settings. The segments of at least one pair (l / ll, ll / lll. III / IV, IV / V or V / VI) of two adjacent segments in the succession are rotatable relative to one another each about an axis (13) perpendicular to a terminating plane (12) of the respective segment, the planes (12) of those two segments extending obliquely at the same angle (14) to the respective parts of the centreline (11) present in the two segments. The angle (14) is selected so that those two segments are rotatable relative to one another between a setting in which the parts of the centreline (11) therein are aligned with one another and a setting in which the parts of the centreline therein include an acute angle. At least one of the segments (II) may comprise two sections (IIA, IIB) rotatable relative to one another about an axis coincident with the part of the centreline in that segment. Enhanced mobility and controllability may be achieved if each of the segments (I to VI) comprises the two relatively rotatable sections such that within the arm the junctions of relatively rotatable sections alternate with the junctions of relatively rotatable segments.

An endoscope (1) comprises a curved section (20) molded in one piece. The curved section comprises segments (22) connected to each other by a hinge (24). The outer surfaces (33) of these segments form the outer surface of the curved section. A central passage (12) passes through each segment and extends from a distal end to a proximal end of the curved section. Each segment has a recess (18) extending from the outer surface into the segment. The recess forms a channel (30) extending through the segment parallel to the central passage. A middle hinge and a peripheral hinge connect two adjacent segments with the middle hinge placed between the central passage and the channel and the peripheral hinge placed at an outer surface of the segments. A cable (7) extending between the distal tip and the handle is arranged in the channel.

The application relates to a prestress lifting system for a segmental assembled pier, belonging to the field of bridge design. When the segmental assembled pier of the present stage is subjected to an earthquake load, transverse displacement or cracks are easily generated between the two adjacent segments of the segmental assembled pier along with the swing of the segmental assembled pier, thus leading to the decrease of the rigidity and the bearing capacity of the overall structure. The application comprises prestressed tendons, the prestressed tendons longitudinally penetrating through the multiple segments of the pier and being anchored, N prestress lifting units being axially connected in series on the prestressed tendons, each prestress lifting unit comprising at least one prestress lifting elastic piece, a reserved clamping groove being formed in each segment of the pier, the prestress lifting elastic piece being axially clamped in the reserved clamping groove, and the prestress lifting elastic piece being connected with the prestressed tendon to bear part of the tension stress suffered by the prestressed tendon. The application is mainly used for lifting the prestress of the prestressed tendon and realizing the functions of vibration reduction and energy consumption.

An articulated instrument and method of its manufacture includes a plurality of segments connected to one another end-to-end, each having a hollow tubular shape defined by a wall, the wall comprising three or more rectangular panels connected along their respective edges at acute angles. A plurality of tendons extends at least partially through the plurality of segments and is configured to apply tension that selectively causes two adjacent segments from the plurality of tendons to bend relative to one another along a pivot joint disposed between the two adjacent segments. The plurality of segments is formed by staggered rectangular portions of a single sheet of stock material, each rectangular portion being folded to form the hollow tubular shape and connected to an adjacent rectangular portion by a tab, each tab defining a respective pivot joint.

The invention relates to the technical field of medical zygopophyseal joint fusion devices, and discloses a novel zygopophyseal joint elastic fixing device which comprises a W-shaped connecting piece and a screw assembly, the W-shaped connecting piece is of a symmetrical wavy structure and comprises three vertexes and two grooves, transition areas between the vertexes and the grooves are connected through arcs, and the screw assembly is connected with the W-shaped connecting piece. A through hole channel is formed in the W-shaped connecting piece, the screw assembly can penetrate through the through hole channel to fix the W-shaped connecting piece, the W-shaped connecting piece is made of polyether-ether-ketone materials, and the screw assembly is made of medical-grade titanium alloy. The W-shaped connecting piece is made of a polyether-ether-ketone material, the elasticity modulus of the W-shaped connecting piece is close to that of a skeleton, the lumbar vertebra is allowed to elastically move within the range of + / -3 degrees to + / -5 degrees through the symmetrical wavy structural design, the problem that the articular process joint activity capacity is lost due to a traditional rigid fusion cage is solved, and natural mechanical transmission of the spine is maintained; and the degeneration risk caused by stress concentration of adjacent sections is effectively reduced.

An insertion tool for performing an operation on equipment, the insertion tool including: a plurality of segments, each segment of the plurality of segments including a body including: a first hinge; a second hinge, the first and second hinge members pivotally coupling adjacent segments of the plurality of segments together; and a cavity extending along the body of the segment, the cavity exiting the body at a plurality of exit locations, wherein at least one of the plurality of exit locations is disposed adjacent to the first hinge; and a selectively rigidizable strength member disposed within the cavity.

The application discloses an insertion part and an endoscope, and relates to the technical field of medical devices. The insertion part comprises a first pipe structure and a plurality of segments. The plurality of segments are arranged at the first pipe structure in a spaced manner along the extension direction of the first pipe structure, and two adjacent segments can rotate relative to each other with the first pipe structure therebetween as support to realize bending of the insertion part. The first pipe structure penetrates the segments in sequence, and the distal end of the first pipe structure is in communication with the external space of the insertion part. The insertion part realizes that the rotating structure for bending of the insertion part is shared with a medium conveying channel. The compactness of each structure in the insertion part can be improved, and the size of the insertion part can be reduced.

An endoscope with an articulated bending section body (1) including a number of segments (4) where at least one hinge member (5) is provided between any adjacent segment (4). Each segment (4) has a first surface (9, 9″) and a second surface (10, 10′) delimited by an outer rim. The first surface (9, 9″) includes a first abutment part (11) adapted to abut the first opposing surface (10, 11) of an adjacent segment, wherein the first abutment part (11) is at a distance from the at least one hinge member (5) that is shorter than the shortest distance from the at least one hinge member (5) to the most remote part of the rim.

An implant for vascular treatment may include a wire having three or more segments, with adjacent segments having different stiffness and / or other characteristics to facilitate treatment of aneurysms with a single instance of the wire. The wire having three or more segments may reduce the time required to treat the aneurysm as compared to using multiple coils to treat the aneurysm.

This invention discloses a pipe segment, a casting template, a tool for adjusting the length of the reinforcing nail, and a pipe repair method. The pipe segment includes a segment body, a central reinforcing nail, and a circumferential connection structure. The segment body is constructed in an arc-shaped plate form. The circumferential connection structure is located at the circumferential end of the segment body and includes a circumferential reinforcing nail perpendicularly fixed to the outer arc surface of the segment body and a circumferential insertion hole perpendicularly penetrating the segment body. The length of the circumferential reinforcing nail is greater than the depth of the circumferential insertion hole, so that when the circumferential reinforcing nail of the segment is inserted into the circumferential insertion hole of an adjacent segment for circumferential connection, the portion of the circumferential reinforcing nail protruding from the circumferential insertion hole supports the inner wall of the existing pipe, forming a grouting space between the outer arc surface of the segment body and the inner wall of the existing pipe. When using the pipe segment of this application for pipe repair, the circumferential reinforcing nail achieves the dual function of connecting adjacent segments and supporting the existing pipe. During construction, workers do not need to install and remove additional segment support components, improving pipe repair efficiency.

Systems, apparatuses and methods for preserving motion in an intervertebral disc. Modular disc implant segments can be constructed from a relatively rigid material with compressive spring lobes to act similar to an elastomer. The lobes may be configured to have a C-shaped outer wall and one or more spring arms, such as a leaf springs, to facilitate the modular disc implant segment's ability to compress, thereby enabling an entire intervertebral disc constructed from multiple modular disc implant segments to compress with the implant recipient's movement. The implant segments are sized to be inserted serially into a space defined by the annular fibrosus after removal of the nucleus pulposus with connections being made between adjacent segments in the space during the insertion process.

This invention discloses a flexible and rigid snake-bone tube, as well as a flexible insertion cannula and a rigid endoscope. It relates to the field of snake-bone tubes and solves the problem that the rigidity of existing endoscopes is difficult to meet universal requirements due to variations in application scenarios, doctors, and individual patients. The invention includes a snake-bone structure composed of several segments connected sequentially. Adjacent segments have insertion structures along the axial direction. Each insertion structure includes a male connector at one end of a segment and a female connector at one end of the adjacent segment. Adjacent segments are rotatably connected via the male and female connectors. The male connector has several locking grooves, and an electromagnetic locking mechanism is provided between adjacent segments to abut against the locking grooves. This invention utilizes electromagnetic principles to enable the snake-bone structure to switch between flexible and rigid modes. This allows the invention to be easily inserted into the patient's body like a rigid tube, and also allows for angle adjustment like a rigid tube, effectively improving the applicability of the snake-bone tube.

The utility model discloses an integrated zero-incisura fusion cage system. The integrated zero-incisura fusion cage system comprises a fusion cage, wherein the fusion cage comprises a main body and a supporting part which are connected; the main body is arranged in an intervertebral space to be fused with adjacent vertebrae; the supporting part is provided with elastic pieces which are symmetrically arranged on the upper side and the lower side of the body and have a component away from the body and a component in the forward direction in the natural state. The transmission mechanism is connected with the fusion cage so as to drive the fusion cage to move in the accommodating bin, so that the fusion cage is switched between a storage state and an extension state; when the fusion cage is in a storage state, the elastic sheet is stored in the storage bin, and the transmission mechanism moves the storage bin to a to-be-inserted position of the main body; when the fusion cage is in an extending state, the elastic piece extends out of the containing bin, the main body is inserted into an intervertebral space in the state, and the elastic piece is inserted into tissue near adjacent vertebrae; the containing bin is connected with the conveying mechanism and provided with a containing space for containing the fusion cage. According to the utility model, the influence on adjacent sections is avoided, and the use is convenient.

This application provides a hexagonal segment lining structure and assembly method, relating to the field of shield tunnel technology. The lining structure includes a segment ring, which includes a sub-ring. The sub-ring is formed by splicing multiple first segments around a first axis. Each first segment has a first end face and a second end face. The first end face is connected to a first side face, and the second end face is connected to a second side face. The first side face and the second side face on the same side are connected. In the sub-ring, two adjacent first segments are spliced ​​together through the first side face and the second side face. The three first segments spliced ​​together in sequence form a trapezoidal gap. A filling structure is spliced ​​on the sub-ring to form a flat end face at the end face where the segment ring splices with another adjacent segment ring. By setting the filling structure to fill the trapezoidal gap and form a flat end face, the two segment rings are connected through the flat end face, which can change the relative rotation angle between them, thereby adjusting the overall rotation trend of the lining and improving the control accuracy of the tunnel axis and the safety of the lining structure.