174 results about "Distal segment" patented technology

The invention concerns a radiofrequency (RF) ablation catheter (100) comprising: a flexible shaft (110) extending between a distal end and a proximal end: an inflatable balloon (120) mounted on the shaft (110); and an RF conductor element (115), wherein a portion of the flexible shaft (110) is distal to the inflatable balloon (120) and is defined as a distal segment (119) of the shaft (110), and wherein the RF conductor element (115) is located on the distal segment (119) and is adapted to electrically contact and to deliver RF energy to a liquid metal (150).

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 neurovascular catheter is disclosed for insertion into an internal carotid artery of a patient. The neurovascular catheter includes a flexible distal segment for insertion into an internal carotid artery of a patient. The flexible distal segment can include a distal portion, a transitional portion, and a support portion. The distal portion includes a tracking tip configured to be positioned within a cavernous segment of the internal carotid artery, and an increasing stiffness portion. The transitional portion can be positioned within a petrous segment of the internal carotid artery. The support portion can extend proximally to a base of a patient's skull.

The invention provides a clinometer, which belongs to the technical field of side slope landslide monitoring equipment, and comprises at least one segment assembly, the segment assembly comprises a near-end segment close to the earth surface in a working state and a far-end segment far away from the earth surface in the working state, and the near-end segment and the far-end segment are circular pipes axially connected end to end; at least three pressure sensors are arranged at the connecting part of the near-end section and the far-end section; according to the inclinometer, the omnidirectional four-axis structure of the gyroscope is adopted to limit the circumferential rotation between the two sections along the axis, so that the rotation relative to the axis is realized as far as possible; the pressure sensor is used for detecting the extrusion force generated when the two sections rotate relative to each other and rotating the two sections into an angle generated when the two sections rotate relative to each other; one section is provided with a rotatable joint, the two sections can be mutually connected and fixed, and the circumferential angle corresponding relation is unique during connection, so that the measurement accuracy is improved.

A delivery system for delivering a medical device may include a handle, a delivery catheter extending distally from the handle, and a balloon mounted to a distal end portion of the delivery catheter. An actuator on the handle may be operably coupled to the delivery catheter such that actuation of the actuator applies a torque on a proximal end portion of the delivery catheter. The delivery catheter may have a proximal segment formed of a first material and the delivery catheter may have a distal segment formed of a second material, the first material being stiffer than the second material, and the proximal segment being stiffer than the distal segment.

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.

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.

The object of the present invention is a dynamic intramedullary nail with hybrid drive, characterised in that it comprises a housing consisting of a proximal section and a distal section, and in that said housing comprises a magnetic rotor driven by an external magnetic field and an internal spring element that accumulates potential energy upon assembly, forming drive means for extending the nail in a telescopic manner.

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.

A robotic surgical instrument includes a housing, a support plate disposed within the housing, and a shaft having a proximal end portion coupled to the support plate within the housing, a proximal segment, a distal segment, and an articulating portion interconnecting the proximal and distal segments. An end effector assembly is coupled to the distal segment of the shaft. A plurality of actuation components extends through the support plate and at least a portion of the shaft to operably couple to at least one of the end effector assembly, the articulating portion, or the distal segment to enable selective actuation of the end effector assembly. A seal configuration establishes seals against an interior annular surface of the shaft, about each actuation component of the plurality of actuation components, and within the proximal end portion of the shaft to inhibit fluid communication from the shaft into the housing.

A surgical instrument includes a housing having a shaft extending distally from the housing, and a plurality of coupling members coupled to the shaft and configured to couple the coupling members to the housing. And an end effector disposed at a distal end of the shaft, the end effector having a first jaw member and a second jaw member. The jaw members are movable relative to each other from a first open configuration spaced apart from each other to a second closed configuration. The first jaw member includes a sealing plate having a proximal section and a distal section, each adapted to be connected to an energy source via a single wired connection, and the second jaw member includes a sealing plate adapted to be connected to the energy source. A resistor is disposed in the circuit and electrically coupled to the energy source. The resistor is configured to, when activated, regulate energy flow to the proximal section of the first jaw member via the single wired connection, and until the jaw member reaches the second configuration.

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.

An apparatus for supporting and positioning a patient's leg during a surgical procedure includes a substantially rigid, non-linear support structure comprising a distal segment and a proximal segment. The apparatus further includes a proximal locking swivel joint and an actuation handle. The proximal locking swivel joint is coupled to the proximal segment of the support structure and holds the support structure in a plurality of positions. The actuation handle is connected to the distal segment of the support structure and coupled to the proximal locking swivel joint. Activation of the actuation handle results in release of the proximal locking swivel joint, thereby allowing repositioning of the support structure into a plurality of positions.

An anatomical brace for dynamically stabilizing the elbow during elbow articulation, the anatomical brace comprising: a brace body comprising a distal portion for fitting over the forearm of a user and a proximal portion for fitting over the upper arm of a user; a hinge mechanism comprising a distal segment, a proximal segment and a pivot for pivotally connecting the distal segment and the proximal segment, the distal segment of the hinge mechanism being mounted to the distal portion of the brace body and the proximal segment of the hinge mechanism being mounted to the proximal portion of the brace body; a pivot cable guide mounted to the anterior portion of the pivot; an upper arm cable guide mounted to at least one of the proximal segment of the hinge mechanism and the proximal portion of the brace body, the upper arm cable guide being configured to change the direction of a cable extending through the upper arm cable guide; an ulnar collateral ligament (UCL) cable guide mounted to the brace body and configured to direct a cable extending through the ulnar collateral ligament (UCL) cable guide over the ulnar collateral ligament (UCL) and toward the distal portion of the brace body; and a cable having a first end and a second end; the first end of the cable being mounted to the distal segment of the hinge mechanism, the second end of the cable being mounted to the distal portion of the brace body, and the cable being routed proximally along the distal segment of the hinge mechanism, through the pivot cable guide, proximally along the proximal segment of the hinge mechanism, through the upper arm cable guide, and through the ulnar collateral ligament (UCL) cable guide; wherein, when the anatomical brace is mounted to the arm of a user so that the distal portion of the brace body is secured to the forearm of the user, and the proximal portion of the brace body is secured to the upper arm of the user, and when the elbow thereafter moves to full extension, the cable is tensioned, whereby to apply a force to the ulnar collateral ligament (UCL) of the user, and when the elbow thereafter moves to full flexion, the cable is relaxed, so that the force applied to the ulnar collateral ligament (UCL) is released.

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

A fixation component includes tines extending from a base portion of the fixation component. Each tine is elastically deformable between a pre-set position and an open position. Each tine includes a hook segment extending from a proximal end near the base portion to a distal end. Each tine also includes a distal segment extending from the distal end of the hook segment to a tissue-piercing tip. When positioned in the pre-set position, the hook segment extends along a pre-set curvature that encloses an angle between 135 degrees and 270 degrees, and the distal segment extends away from a longitudinal axis of the fixation component.

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.