13 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.

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.

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 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.

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.

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.

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.