94 results about "Distal segment" patented technology

An expandable introducer apparatus comprising an inner tubular layer comprising an inner lumen and a radially expandable region extending along an elongated axis of the inner lumen and configured to at least partially radially expand relative to the elongated axis from a contracted orientation to an expanded orientation. An outer tubular layer comprising an inner surface bonded to the inner tubular layer, wherein a distal segment of the inner tubular layer extends beyond a distal end of the outer tubular layer. A flexible tubular member comprising a bonded region and a flexible region, wherein an inner surface of the bonded region is bonded to an outer surface of the distal segment of the inner tubular layer, and the flexible region is not bonded to the radially expandable region of the inner tubular layer.

A reconfigurable patient transport system may include a patient support apparatus and a patient transport apparatus. The patient support apparatus may include a hinge member, a left support board, and a right support board each coupled to the hinge member. The left support board may comprise a left proximal segment and a left wing segment each removably coupled to a left distal segment. The right support board may comprise a right proximal segment and a right wing segment each removably coupled to a right distal segment. The patient transport apparatus may comprise a support frame and an intermediate frame coupled to the support frame. The intermediate frame may comprise a support deck configured to support a patient. The patient transport apparatus may further comprise a left siderail bracket and a right siderail bracket each configured for engagement with one of the wing segments of the support boards.

Surgical treatment of glaucoma involves creation of a sclerocorneal drainage channel, ensuring long-lasting controlled fluid flow and reduced intraocular pressure. Limitations relate to collateral damage to adjacent structures and outcomes being heavily reliant on the surgeon's expertise. The device described herein addresses such shortcomings. The device comprises a body for grasping, a piercing member including a proximal segment and a distal segment, the distal segment including a piercing tip at a distal end thereof, and a distal stabilizer element extending from a distal end of the body, the distal stabilizer element including a lumen, wherein the piercing member is configured to reciprocate from a stored position, wherein the proximal segment is retracted within the stabilizer lumen and the piercing tip extends outwardly from the stabilizer, and an extended position, wherein the distal segment and at least a portion of the proximal segment extend outwardly from the stabilizer.

The invention relates to the technical field of rehabilitation medical equipment, in particular to hand rehabilitation equipment and system based on multi-source data analys.The hand rehabilitation equipment comprises a wearable glove, the wearable glove is made of a flexible and breathable silica gel-fabric composite material and comprises finger parts and a palm part, and the finger parts correspond to five fingers of a human body one to one; each finger part is divided into three sectional mounting positions including a near section, a middle section and a far section in the length direction, and a polytetrafluoroethylene wear-resistant sleeve is pre-embedded in the wearable glove to serve as a traction rope channel; the flexible array type myoelectricity sensors are fixed to the mounting positions of the proximal section, the middle section and the distal section of each finger part, myoelectricity, postures, tension and interaction signals are comprehensively collected, weighted fusion is conducted through an attention mechanism, the motion intention recognition accuracy is larger than or equal to 92%, functional state evaluation is more accurate, and the motion intention recognition accuracy is larger than or equal to 92%. The training mode and parameters are dynamically adjusted according to the real-time state of the user, excessive / insufficient training is avoided, and the rehabilitation efficiency is improved.

A system for assisting in the retrieval of a clot from a vessel. The system can include an outer catheter and an inner catheter disposed in a lumen of the outer catheter. The inner catheter can include a distal end, a proximal end, a distal segment, a proximal segment, and a lumen extending proximal of the distal end and terminating at a transfer port at the proximal end of the distal segment. A seal is located on the outer surface of the inner catheter distal of the transfer port, the seal capable of sealing against the lumen of the outer catheter so that aspiration applied through the outer catheter is configured to be transferred to the inner catheter.

The present invention provides a method and / or device for applying an ideal amount of tenting force to the pericardial layer 911. [Solution] The elongated guidewire assembly 200 has a distal segment 205 configured to be selectively operated along the elongated introducer assembly 102. The distal segment is configured to selectively transmit a tenting force 700 from the elongated guidewire assembly to the first biological wall 910 after the distal segment has selectively extended away from the distal introducer assembly, with the distal segment at least partially in contact with the first biological wall 910.

The invention provides a covered stent which comprises a stent body and a covering film, and the covering film at least partially covers the surface of the stent body. The stent body comprises a far-end section and a near-end section in the axial direction, the far-end section is provided with a far-end opening, the near-end section is provided with a near-end opening, the far-end opening is provided with at least one saddle part protruding towards the far end, and the saddle parts are arranged to conform to the sinus part of the aortic blood vessel, so that the extending stent part is provided to support the sinus blood vessel while the coronary artery opening is avoided; the covering area of the stent on a diseased region is increased; the covering film further comprises a free section, the free section exceeds the near-end opening, the free section is used for being sutured with an artificial blood vessel or an autologous blood vessel, a complete and closed aorta blood vessel is formed after suturing, leakage is avoided, and meanwhile suturing is easy.

The present invention is titled "Manipulable Sheath with Variable Bending Span". The present invention discloses a guiding sheath assembly having a shaft that is operable to define more than one flexure curvature and define a lumen to slidably receive a cardiovascular catheter. The guiding sheath assembly includes a proximal segment, a distal segment, and a reinforcement member. The proximal segment has a proximal shaft that defines a proximal lumen extending distally along a longitudinal axis to the distal segment. The distal segment has a distal shaft that defines a distal lumen, and the distal shaft is configured to be laterally biased (e.g., elastically biased) away from the longitudinal axis. The reinforcement member is a rigid elongate member, such as an internal tubular member, that is configured to counteract the bias of the distal shaft. Longitudinal movement of the reinforcement member relative to the distal segment enables an operator to select and set the flexure curvature of the distal segment.

A fenestrated balloon catheter includes a body having a proximal segment, a central segment, and a distal segment. The proximal segment has a first set of fenestrations, and the distal segment has a second set of fenestrations. An elongated tubular structure wraps around the proximal segment, the central segment, and the distal segment. After the fenestrated balloon catheter is inserted into a tube (e.g., a blood vessel), fluid pressure is inserted into the elongated tubular structure to expand the fenestrated balloon catheter, thereby touching the inner walls of the tube or expanding the inner walls of the tube. The first set and second set of fenestrations provide for flow of a fluid (e.g. blood) through the fenestrated balloon catheter after expansion.

Methods for restoring blood flow in occluded blood vessels using an apparatus having a self-expandable distal segment that is pre-formed to assume a superimposed structure in an unconstrained condition but can be made to take on a volume-reduced form making it possible to introduce it with a microcatheter and a push wire arranged at the proximal end, with the distal segment in its superimposed structure assuming the form of a longitudinally open tube and having a mesh structure of interconnected strings or filaments or struts. In a preferred embodiment, the distal segment has a tapering structure at its proximal end where the strings or filaments or struts converge at a connection point.

A multi-segmented microcatheter device includes a distal segment having an interior bore for a guidewire portion, a push-wire extension extending away from an end of the distal segment, a proximal segment having an interior lumen for a guidewire portion and a longitudinal channel to slidably engage the push-wire extension, a connector module to removably secure the proximal and distal segments together so a contiguous passage for a guidewire is formed from the interior bore and lumen and a motion lock hub that selectively locks the push-wire extension and the proximal segment together. Thereby, the proximal and distal segments can be manipulated in unison when they are secured together with the connector module and the push-wire extension and proximal segments are locked in a fixed relation through the motion lock hub.

This invention provides a covered stent, comprising a main stent having a tubular body, the main stent comprising a proximal segment, a middle segment, and a distal segment along the axial direction, the diameter of the distal segment being smaller than the diameter of the middle segment; the middle segment comprising a first channel and a second channel along the radial direction, the distal segment being connected to the distal opening of the first channel; a first embedded stent is embedded in the second channel, the first embedded stent comprising a first proximal port, a first outer wall, and a first distal port along the axial direction, the first embedded stent having at least the first proximal port fixedly connected to the main stent, the first outer wall and the first distal port being movably connected to the main stent and being movable along the axial direction after connection, the embedded stent being configured to be slidably connected to the connected middle segment at least along the axis, thereby ensuring that the embedded stent has good bending and extension space when bending, avoiding bending due to axial restriction.

An articulating surgical instrument includes a housing having a shaft extending therefrom, the shaft having a proximal segment and a distal segment separated by an articulation section configured to articulate the distal segment relative to the proximal segment upon actuation thereof. The articulating section includes: a ball joint having a plurality of opposing spherical segments, each adjacent pair of spherical segments defining a channel therebetween configured to receive an articulation cable therethrough, each channel including an angled surface on opposing sides thereof to allow articulation of each cable along a respective length thereof; and a pair of casings configured to operably receive and retain the ball joint on opposing ends thereof, each casing including a chamfer defined therein configured to rotationally receive an end of the ball joint therein, each casing including a corresponding number of apertures defined therein each configured to receive a respective articulation cable therethrough.

The present invention provides a coated stent and a delivery system, comprising a main stent with a tubular body, wherein the main stent comprises a proximal segment and a distal segment in sequence along the axial direction, the distal segment comprises a first branch and a second branch, the lumen of the first branch and the lumen of the second branch are both connected to the lumen of the proximal segment, and a double-branch implantation method of implanting a small stent is adopted, so that the types of blood vessels that the coated stent can adapt to are increased, and the adaptability is strong. Furthermore, the first branch and the second branch are spirally wound around each other and then fixedly arranged; so that the coated stent can increase the anchoring length of the implanted small stent under the same axial length, thereby increasing the stability after connection.

A catheter for use in a system for forming a fistula, the catheter including a catheter body, and a segmented backstop coupled to the catheter body and configured to receive a fistula-forming element, wherein the segmented backstop comprises at least a proximal segment and a distal segment, independently articulable relative to one another.

The present disclosure concerns an articulated positioning system for positioning a scientific tool in predetermined position and orientation with respect to a head of a subject, the articulated positioning system comprising: a spherical robot arm assembly defining an arm displacement sphere, the spherical robot arm assembly comprising: a proximal arm segment comprising a base-mounting end portion connectable to a support structure and an opposed distal segment-mounting end portion, the proximal arm segment forming a proximal arc of the arm displacement sphere; and a distal arm segment comprising a proximal segment-mounting end portion pivotally mounted to the distal segment-mounting end portion about an arm segment connection axis and an opposed tool-holding end portion, the distal arm segment forming a distal arc of the arm displacement sphere. It also concerns a corresponding robotized positioning assembly and a corresponding method for positioning the tool in the predetermined position and orientation.

The utility model provides an external fixation instrument for traction of bone hammer-shaped fingers. The external fixation instrument comprises a fingerstall, a screw rod and a threaded ring, the external shape of the fingerstall is in a square box shape, one end of the fingerstall is open, the fingerstall is used for wrapping the fingertip, the outer side wall of the fingerstall is connected with one end of the screw rod, and the threaded ring is matched with the screw rod. The U-shaped clamp made of an aluminum plate is matched with the bandage to clamp and fix the bony hammer-shaped finger, then the fingerstall is adopted to wrap the fingertip, and the threaded ring is rotated in a matched mode, so that the threaded ring drives the fingerstall to move through the screw rod, the finger is pulled, the tail section of the bony hammer-shaped finger is straightened or the back of the bony hammer-shaped finger is slightly stretched, and the bony hammer-shaped finger is fixed. The effect of traction on the bony hammer-shaped finger under the non-surgical condition is achieved.

A multi-segmented microcatheter device includes a distal segment having an interior bore for a guidewire portion, a push-wire extension extending away from an end of the distal segment, a proximal segment having an interior lumen for a guidewire portion and a longitudinal channel to slidably engage the push-wire extension, a connector module to removably secure the proximal and distal segments together so a contiguous passage for a guidewire is formed from the interior bore and lumen and a motion lock hub that selectively locks the push-wire extension and the proximal segment together. Thereby, the proximal and distal segments can be manipulated in unison when they are secured together with the connector module and the push-wire extension and proximal segments are locked in a fixed relation through the

This invention provides a covered stent, comprising a main stent having a tubular body. The main stent includes a proximal segment, a middle segment, and a distal segment sequentially along the axial direction. The distal end of the middle segment has a distal opening. A first embedded stent and a second embedded stent are disposed within the middle segment. The lumens of the first and second embedded stents communicate with the lumen of the proximal segment, and the first embedded stent connects the proximal and distal segments. The second embedded stent is spirally wound around the outer surface of the first embedded stent in the circumferential direction, and the first embedded stent connects the proximal and distal openings. The spiral arrangement of the second embedded stent provides a longer anchoring path for subsequent implantation of smaller stents. Furthermore, by adjusting the number of spiral turns, the proximal and distal ports of the second embedded stent can be arranged on the same side or opposite sides to accommodate guidewire insertion under different surgical procedures, thus broadening its applicability.

The invention discloses a recoverable woven filter and a taking-out device and system, relates to the technical field of interventional medical instruments, and aims to solve the problems that an existing vena cava filter depends on a center hook for grabbing, the taking-out difficulty is large, blood vessels are prone to being damaged, and the taking-out failure rate is high. The recoverable woven filter comprises a hooking piece, a protecting piece and a filtering part, the filtering part is woven by nickel-titanium metal wires to form a proximal section, a middle section and a telecentric section, the proximal section and the telecentric section are open grids with gradually-changed pore diameters, and an anchoring structure is arranged on the outer side of the middle section; the intersections of the metal wire weaving are in surface contact friction locking, and can be integrally contracted under axial traction force. The taking-out device comprises a tube base, a sheath tube and a grabbing mechanism, and the grabbing mechanism clamps any part of the filter through an occlusion head and pulls the filter into the sheath tube. The filter is high in softness, can be clamped and taken out at multiple parts, does not need to depend on a specific hooking piece, is low in alignment requirement, remarkably improves the taking-out success rate, and is suitable for vena cava thrombosis filtration and safe recovery.

Surgical treatment of glaucoma involves creation of a sclerocorneal drainage channel, ensuring long-lasting controlled fluid flow and reduced intraocular pressure. Limitations relate to collateral damage to adjacent structures and outcomes being heavily reliant on the surgeon's expertise. The device described herein addresses such shortcomings. The device comprises a body for grasping, a piercing member including a proximal segment and a distal segment, the distal segment including a piercing tip at a distal end thereof, and a distal stabilizer element extending from a distal end of the body, the distal stabilizer element including a lumen, wherein the piercing member is configured to reciprocate from a stored position, wherein the proximal segment is retracted within the stabilizer lumen and the piercing tip extends outwardly from the stabilizer, and an extended position, wherein the distal segment and at least a portion of the proximal segment extend outwardly from the stabilizer.

The invention is entitled "Electroporation with Cooling". A medical system is disclosed, the medical system comprising a catheter comprising: an insertion tube having a distal end; an elongate resilient distal segment secured to the distal end of the insertion tube, the distal segment having an outer surface; and a plurality of electrode structures, each electrode structure disposed on and protruding from the outer surface of the distal segment, each electrode structure comprising a respective primary electrode and at least one respective secondary electrode extending around the outer surface, and a respective electrically insulating material disposed around the outer surface and between the respective primary electrode and the at least one respective secondary electrode, the respective primary electrode protruding from the outer surface to a greater extent than the at least one respective secondary electrode and the respective electrically insulating material.

Described herein are various embodiments of flexible catheters comprising one or more flexibility regions. In one embodiment, a catheter comprises an elongate body having a proximal segment and a distal segment; a first lumen defined by the elongate body and configured for drainage of a liquid from a bodily region; and a plurality of flexibility regions on or in the distal segment of the elongate body. The plurality of flexibility regions, collectively, is configured to passively bend anteriorly. Further, at least one of the plurality of flexibility regions has a cut depth percentage of about 50% to about 75% of a wall thickness of the elongate body. The features and arrangement of the flexibility regions described herein result in the catheter requiring reduced force during insertion into a bodily lumen.

The present invention provides a stable coronary sinus catheter system, the stable coronary sinus catheter system having a proximal segment and a distal segment with a shape memory portion, and a tip distal to the shape memory portion. A handle having a body, a tip deflection actuator, a shape memory portion deployment actuator, and an axis. The tip is in line with the axis, and the tip deflection actuator is in a first position. When the tip deflection actuator is in a second position, the tip deflects and is misaligned with the axis. A third position is a delivery configuration in which the shape memory portion and the tip are in line with the axis. The shape memory portion deployment actuator is in a first position. When the shape memory portion deployment actuator is in a second position, the deployment configuration allows the shape memory portion to form a predetermined shape conforming to the shape of the coronary sinus.

Delivery devices for delivering a self-expanding prosthetic heart valve are disclosed. The delivery device includes at least one cord is configured to selectively cinch the self-expanding prosthetic heart valve. The delivery device further includes at least one self-expanding release pin comprising a proximal segment, a distal segment, and an intermediate segment positioned between the proximal segment and the distal segment. The at least one self-expanding release pin includes a normal, expanded condition wherein the intermediate segment extends radially outward relative to a central axis of the spindle from the proximal segment to the distal segment. The delivery device further includes a capsule configured to be distally extended relative to the spindle to collapse the at least one self-expanding release pin from the normal, expanded condition of the at least one self-expanding release pin to a collapsed condition of the at least one self-expanding release pin.

The invention relates to an implant for the treatment of arteriovenous malformations, in particular aneurysms, in which the implant can be brought into a target site in the vasculature of a patient in a compressed state by means of a microcatheter, and the implant is imparted with a second structure by means of which it assumes an expanded state when released from the microcatheter, wherein the implant is releasably connected to the insertion aid via a separation site, and wherein the implant in the expanded state has a body having a proximal section and a distal section wherein the proximal section and the distal section have a dome-shaped configuration wherein the convex side of the dome of the proximal section is in a proximal direction and the convex side of the dome of the distal section is in a distal direction. The convex side of the dome of the proximal section faces in the distal direction, and wherein the proximal section and the distal section are connected to each other by a plurality of connecting struts. Alternatively, the implant may have the shape of a closed tulip head. The implant according to the invention can effectively adapt to the shape of a corresponding aneurysm.

TPLO plate includes a body and first and second distal holes. The body extends longitudinally from a proximal end to a distal end and defined via a first surface which, in an operative configuration, faces away from a bone and a second surface which, in the operative configuration, faces toward the bone. The body includes a proximal portion configured to be positioned over a cut and repositioned proximal segment of a tibia during a procedure and a distal portion extending along a longitudinal axis and configured to be positioned over a distal segment of the tibia during the procedure. The first hole extends through a proximal end of the distal portion of the body from the first surface to the second surface. The first hole includes an elongated portion and an offset portion open to and in communication with one another. The elongated portion extends along the longitudinal axis and an offset portion extending distally from the elongated portion along an offset axis, which extends at an angle relative to the longitudinal axis. The second hole extends through the distal portion of the body distally of the first hole from the first surface to the second surface. The second hole extends along the longitudinal axis in alignment with the elongated portion of the first hole and including a sloped compression surface along a distal portion thereof. The first hole is configured such that when a first distal compression to the osteotomy cut is applied via insertion of a bone fixation element into a distal portion of the second hole. The element translates along the offset axis from a central axis to a point of intersection to provide a cranial compression to the osteotomy cut.

The invention provides a covered stent which comprises a main stent body with a tubular main body, and the main stent body comprises a near-end section, a tumor cavity section and a far-end section in the axial direction; the near-end section is connected to the near end of the tumor cavity section, and the far-end section is connected to the far end of the tumor cavity section; an internal iliac channel and an external iliac channel are arranged in the tumor cavity section in the radial direction, the external iliac channel is provided with a first embedded support, the internal iliac channel is provided with a second embedded support, and the first embedded support is communicated with the far-end section; an opening is formed in the far end of the tumor cavity section, and a far port of the second embedded support is communicated with the opening; the first embedded support and the second embedded support are arranged to separate the internal iliac channel and the external iliac channel, and the small channels influence each other. The radial supporting strength of the first embedded stent and the external iliac channel is larger than that of the second embedded stent and the internal iliac channel, so that when a tumor cavity section is pressed, the first embedded stent has good supporting strength and small deformation, a better external iliac channel form is maintained, and the blood flow passing ability of the external iliac channel is ensured.

The application provides a femoral stem prosthesis for severe hip dysplasia, which comprises a first section and a second section which are integrally formed and distributed along the up-down direction, the first section is used for penetrating and press-fitting in the proximal segment of the femur, and the second section is used for inserting and press-fitting in the distal segment of the femur. The first section and the second section adopt a tapered structure, which can improve the axial stability, and the rotation-stopping structure outside the first section and the second section can limit the relative rotation of the prosthesis and the femur. The second section of the femoral stem prosthesis can select a suitable size according to the actual situation of the femur of the patient, so as to improve the stability of the connection, when the second section is stably connected with the distal segment of the femur, the proximal segment of the femur is press-fitted with the first section, and finally the femoral stem prosthesis is continuously pressed, so that the cross section of the distal segment of the femur and the proximal segment of the femur is in contact and sufficient pressing force is provided.

In one exemplary embodiment, an endovascular device may include a hollow shaft having a proximal end and a distal end, and sized for insertion into a blood vessel. The endovascular device may also include a control line having a proximal end and a distal end, and extending through the hollow shaft. The endovascular device may also include an actuatable working element located proximate the distal end of the hollow shaft, and configured to receive an actuation force transmitted via the distal end of the control line. The endovascular device may further include an actuator configured to exert the actuation force on the proximal end of the control line, to thereby cause relative movement between the control line and the hollow shaft and to actuate the working element. The hollow shaft may also include a cable formed of a plurality of wound wires and including a proximal segment, at least one transition segment, and a distal segment. The proximal segment, at least one transition segment, and distal segment may include different numbers of wires.