168 results about "Distal fixation" patented technology

The invention discloses a human body intravascular positioning support, and relates to the field of medical instruments. Comprising a metal wire support which is used for expanding in a blood vessel of a human body to dilate the blood vessel, a plurality of positioning units are arranged on the metal wire support, and each positioning unit comprises a spring and a penetrating type positioning head fixedly connected with the far end of the spring; the near end of the spring is fixedly connected with the metal wire support, and the penetrating type positioning head is used for penetrating into the inner wall of a blood vessel to achieve positioning when the metal wire support is unfolded. Through the design that the spring is combined with the positioning unit of the piercing type positioning head, the unification of stable fixing and safe taking-out of the intravascular positioning stent is achieved.

The invention discloses a bending-adjustable catheter, and relates to the technical field of interventional medical instruments, the bending-adjustable catheter comprises an inner tube, an outer tube, a bending-adjustable supporting tube and a handle, the inner tube comprises an inner tube bending section located at the far end, the inner tube bending section can be bidirectionally bent, and the inner tube bending section at the far end of the inner tube extends outwards from the outer tube; position anchoring of the outer pipe can be achieved through the anchoring structure; the far end of the bending adjusting supporting pipe is connected with the bending adjusting section of the inner pipe, the far end of the outer pipe is fixed to the bending adjusting supporting pipe, and the elasticity modulus of the bending adjusting supporting pipe is smaller than that of the inner pipe. The handle is provided with an inner pipe pushing piece. When the outer tube is anchored to the inner wall of a blood vessel, axial acting force is applied to the inner tube through the inner tube pushing piece, the inner tube control bending section is bent under the action of the axial acting force and supporting force applied by the bending adjusting supporting tube, large-angle bending adjusting can be achieved at the far end of the inner tube, overall rotation of the inner tube and the outer tube is matched, and the far end of the inner tube can rotate in a three-dimensional space. The bending of the adjustable-bending catheter in any direction is realized, and the adjustable-bending catheter can better pass through a roundabout blood vessel.

Apparatus and associated methods relate to a cabled workout tower (CWT). In an illustrative example, the CWT includes a platform including a proximal base supporting opposing vertical supports extending along a longitudinal axis to a distal affixed pullup module. The CWT includes a weight platform including weight stacks housed. The CWT includes a pulley guided cable system operatively connected to cables with pulleys, including a distal weight platform pulley operatively coupled to a double pulley device. An upper pulley portion operatively couples to a distal base platform pulley and a proximal pull handle by an upper cable. A lower pulley portion operatively couples to an anchored weight proximal pulley anchored to a proximal base platform pulley coupled to a proximal pull handle. Various embodiments may advantageously enable users to perform hanging exercises from the pull up bar and weighted abdominal exercises by engaging the proximal pull handle.

The invention provides a nicking guide wire, a nicking balloon assembly and an intervention device. The nicking guide wire comprises a guide wire shaft and a cutting unit. The cutting unit has an expansion state and a compression state, the far end of the cutting unit is fixed to the guide wire shaft, and the near end of the cutting unit is of an expandable annular structure. The nick guide wire is configured such that when the nick guide wire cooperates with the balloon catheter, at least part of the distal end of the balloon catheter enters the interior of the cutting unit through the annular structure. The indented guide wire is provided with the cutting unit, the cutting unit is combined with a balloon catheter to achieve the balloon cutting function, due to the fact that the indented guide wire is separated from a balloon body, the trafficability and flexibility of the product are better than those of products such as a cutting balloon, and when the indented guide wire is applied to treatment of intracranial vessel moderate calcification lesions, blood vessel injuries are not likely to be caused; and operative complications are reduced. For serious calcification lesions of cardiovascular and peripheral blood vessels, plaque expansion can be achieved without additionally using a CTO balloon for pre-expansion, and the operation cost and the operation difficulty are reduced.

The invention relates to the technical field of medical instruments, and discloses a multidirectional multiple rotatable bending-adjustable heart valve delivery system which comprises a delivery handle, a bending-adjustable handle, a balloon tube and a bending-adjustable sheathing canal, and the bending-adjustable handle is arranged at the near end of the delivery handle; the near end of the balloon tube is arranged in the conveying handle, and a balloon is arranged at the far end of the balloon tube; the bending-adjusting sheathing canal is arranged in the balloon tube, and the near end of the bending-adjusting sheathing canal is connected with the bending-adjusting handle; at least two independent cavities are formed in the bending adjusting sheathing canal, and each cavity accommodates one bending adjusting wire; wherein the bending adjusting handle is provided with bending adjusting pieces, the number of the bending adjusting pieces is consistent with that of the bending adjusting wires, the far ends of the bending adjusting wires are fixed to the far ends of the independent cavities, and the near ends of the bending adjusting wires are connected to the bending adjusting pieces. Accurate bending adjustment and flexible control in the artificial valve conveying process are achieved.

This invention discloses an adjustable bending catheter, relating to the field of interventional medical device technology. It includes an inner tube, an outer tube, an adjusting support tube, and a handle. The inner tube includes a distally located curved section capable of bidirectional bending. A distally located internal control bending section extends outward from the outer tube. The outer tube is anchored via an anchoring structure. The distal end of the adjusting support tube is connected to the internal control bending section, and the distal end of the outer tube is fixed to the adjusting support tube. The elastic modulus of the adjusting support tube is less than that of the inner tube. The handle is equipped with an inner tube pushing component. When the outer tube is anchored to the inner wall of the blood vessel, an axial force is applied to the inner tube through the inner tube pushing component. The internal control bending section bends under the combined action of the axial force and the supporting force applied by the adjusting support tube. The distal end of the inner tube can achieve a large-angle bend. Combined with the overall rotation of the inner and outer tubes, the distal end of the inner tube can rotate in three-dimensional space, enabling the adjustable bending catheter to bend in any direction, thus facilitating passage through tortuous blood vessels.

The application discloses a valve cutting device. The valve cutting device comprises a catching catheter and a cutting member. The catching catheter comprises a tube body, the tube body comprises a main body section and an adjustable bending section arranged at the distal end of the main body section. The adjustable bending section has a bending state, in which the adjustable bending section forms a hook structure. The cutting member is in a linear structure. The cutting member extends along the main body section, the distal end of the cutting member is arranged to pass through the tube wall at the distal end of the main body section and is fixedly connected with the distal end of the adjustable bending section. The part of the cutting member located outside the tube body is an active section, the active section moves synchronously with the adjustable bending section. The active section comprises a cutting part, the cutting part is located at the concave side of the adjustable bending section in the bending state. The valve cutting device of the application has the advantages that the cutting member is arranged on the catching catheter, only one catheter is needed to realize the catching and cutting of the valve leaf, the structure is simple, the surgical procedure is simplified, and the damage to the patient can be reduced.

Provided is an extension catheter excellent in strength for fixing a linear member to a cylindrical member. The extension catheter according to the present invention is inserted into a catheter and can be protruded from an opening on a distal side of the catheter. The extension catheter comprises a cylindrical member and a linear member with a distal end portion thereof fixed to the cylindrical member. The cylindrical member comprises an inner layer containing a fluororesin and a proximal end portion located closer to a proximal side than a proximal end of the inner layer. The linear member is fixed to the cylindrical member at least inside the proximal end portion.

The application relates to the technical field of basket catheter, in particular to a basket catheter system and a basket catheter calibration method. The basket catheter system comprises a basket catheter, an operating handle, a tube body and a basket electrode assembly, the basket electrode assembly comprises a spline, a proximal end fixing seat and a distal end fixing seat, and the basket catheter system further comprises a proximal end position sensor and a distal end position sensor arranged on the proximal end fixing seat and the distal end fixing seat respectively; the basket catheter system further comprises a processing device, the proximal end position sensor and the distal end position sensor are connected with the basket catheter, and the processing device is used for obtaining a contact force of the basket electrode assembly and target tissue according to a proximal-distal end spacing change amount, a corresponding relationship between a known axial force value of the basket electrode assembly and the proximal-distal end spacing change amount and a contact angle of the basket electrode assembly and the target tissue. The application mainly solves the technical problem of how to detect the contact force of the basket catheter and the target tissue.

Provided is an extension catheter easy to insert into a tube inside a body. This extension catheter is inserted into a catheter and can protrude from a distal-side opening of the catheter. The extension catheter comprises a tubular member and a linear member having a distal end portion fixed to the tubular member. The tubular member includes a first resin having a portion located outside of the linear member in the radial direction and a second resin having a lower Shore D hardness than the first resin. A cross section of the tubular member in the radial direction has three regions obtained by equally dividing the tubular member in a direction passing through the centroid of the linear member and the centroid of the lumen of the tubular member, and designated as a first region, a second region, and a third region in order of increasing distance from the linear member. The first resin is positioned in the first region or in the first region and the second region, and the second resin is positioned at least in the third region. The first resin has a first exposed surface exposed on the outer surface of the tubular member.

A holder for an annuloplasty ring that detaches with one cut. The annuloplasty ring mounts around a periphery of the holder without the use of connecting sutures. The holder has a proximal plate defining a lip on one side of the ring, and a distal retainer that defines a second lip on the other side, the two lips retaining the ring around the holder periphery. The distal retainer is formed by two hinged wings. A truss suture maintains the holder in a trussed configuration while the annuloplasty ring is delivered and secured to the implantation site. Once the ring is secured at the annulus, the truss suture is severed with one cut, enabling the hinged wings to pivot and the holder to be pulled free of the ring.

The invention discloses an external fixing device for bone defect repair, which belongs to the technical field of medical instruments and comprises a near-end fixing ring unit and a far-end fixing ring unit which are connected into a whole through a plurality of adjustable connecting rod units, and the adjustable connecting rod units are used for adjusting the distance between the near-end fixing ring unit and the far-end fixing ring unit. According to the invention, the large-range coarse adjustment of the bone fracture end distance can be quickly realized, and the initial fixing requirements of different bone defect lengths can be met.

A delivery system for an intracorporeal device includes a sheath defining one or more lumens shaped to receive a delivery catheter or shaft and a guidewire. The system may include a delivery shaft having a distal coupling feature adapted to releasably couple with a proximal coupling feature of the intracorporeal device. The delivery system may further include a hub through which the delivery shaft and guidewire are passed. The delivery shaft may be coupled to a feature, such as a knob, that enables manipulation of the delivery shaft to decouple the distal fixation feature from the proximal fixation feature of the intracorporeal device in order to deploy the intracorporeal device within a patient.

The application relates to a balloon catheter, characterized in that the balloon catheter comprises a balloon, a catheter, a terminal tube, a developing ring, a catheter seat, a stress tube and a catheter sleeve, the catheter comprises an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, the distal end of the inner tube is connected with the proximal end of the terminal tube, the distal end of the balloon is fixed on the outer surface of the terminal tube and / or the inner tube, the proximal end of the balloon is fixed on the outer surface of the distal end of the outer tube, the developing ring is arranged on the inner tube in the balloon, the stress tube is fixed on the distal end of the catheter seat, the proximal end of the inner tube is fixed inside the proximal end of the catheter seat through the stress tube and the catheter seat, the proximal end of the outer tube is fixed inside the distal end of the catheter seat through the stress tube and the catheter seat, and the catheter sleeve is sleeved outside the balloon. The balloon catheter can effectively treat arterial or venous stenosis and the like.

A single delivery needle configuration accommodates multiple soft tissue fixation devices at once. The configuration eliminates the need to reload a fixation delivery device when multiple fixation devices are required. Further, this configuration can include different variations of fixation devices. In embodiments, these fixation devices are typically manufactured from standard braided polyester suture that is cut into segments with predetermined lengths. This design allows the braided suture segments to be preloaded with a suture threaded through the preloaded braided suture segments with a slip knot placed on the proximal end of a first braided suture segments (e.g., distal fixation device). The tailing suture from the slip knot passes through the second, third, fourth braided suture segments, or any required quantity of braided suture segments that have been preloaded into the delivery device. The suture passes completely through a delivery device.

A medical device, and methods of manufacturing the same, including a fixation element having varied cross-sectional dimension. The device including a body portion and the fixation element coupled to a distal body end and extending therefrom. The fixation element is configured to affix the body portion to a wall of a heart. The fixation element defines a helical shape extending between a distal fixation end and a proximal fixation end along a direction of a helical axis. The fixation element defines a proximal fixation section proximate the proximal fixation end, a distal fixation section proximate the distal fixation end, and a middle fixation section located between the proximal and distal fixation sections. A cross-sectional dimension of the middle fixation section is smaller than a cross-sectional dimension of the proximal fixation section.

The present invention provides a medical device for forming an opening channel or access passage between body tubular lumens. [Solution] The present invention relates to a device that uses an elongated body, a proximal holding portion, and a distal holding portion to bring the muscle layers of a first body lumen and a second body lumen into contact and to form a long-term or permanent opening or access channel between them. The medical device comprises an elongated body that forms a lumen and includes a proximal portion, a distal portion, a certain length, and a certain diameter, wherein the elongated body 310 may have an elongated tubular form (e.g., a restrained form, an unexpanded form, or a transport form) and a retracted form (e.g., an unrestrained form, an expanded form, or an unfolded form) in which the proximal portion 312 expands radially into the proximal holding portion 314 and the distal holding portion 322 expands radially into the distal holding portion 324, with a cylindrical saddle portion 328 extending between them.

The invention relates to a thrombus extraction stent and a thrombus extraction system.The thrombus extraction stent comprises a thrombus separation assembly and a thrombus capturing assembly, the thrombus separation assembly comprises a stripping net and at least two anchor rods, each anchor rod comprises a fixed end and a free end, the fixed end is fixedly connected with the far end of the stripping net, and the free end extends towards the near end relative to the fixed end; the thrombus capturing assembly comprises a net-shaped collecting bin, the collecting bin comprises a first woven mesh basket, a contraction section and a second woven mesh basket, the first woven mesh basket can move towards the far end to be contained in the second woven mesh basket, so that the contraction section is bent to form an anchoring part, and the anchoring part is used for allowing the free end of an anchor rod to penetrate through; therefore, the stripping net is detachably connected with the anchoring part through the anchor rod. According to the thrombus extraction stent and the thrombus extraction system, the difficulty of cleaning thrombus in the thrombus extraction stent can be reduced, so that the efficiency of cleaning the thrombus in the thrombus extraction stent is improved.

A delivery system for an intracorporeal device includes a sheath defining one or more lumens shaped to receive a delivery catheter or shaft and a guidewire. The system may include a delivery shaft having a distal coupling feature adapted to releasably couple with a proximal coupling feature of the intracorporeal device. The delivery system may further include a hub through which the delivery shaft and guidewire are passed. The delivery shaft may be coupled to a feature, such as a knob, that enables manipulation of the delivery shaft to decouple the distal fixation feature from the proximal fixation feature of the intracorporeal device in order to deploy the intracorporeal device within a patient.

This utility model discloses a multi-functional electrosurgical unit with adjustable length and water injection capability. The distal end of the delivery tube is fixedly connected to the I-blade body via a connecting tube, and the proximal end of the delivery tube is fixed to the main handle. The proximal end of the O-blade body is fixedly connected to the distal end of the inner sheath tube, which is sleeved outside the delivery tube. The proximal end of the inner sheath tube is fixedly connected to the inner sheath handle, and the outer sheath tube is sleeved outside the inner sheath tube. The distal end of the outer sheath tube is limited by a ceramic head, and the proximal end of the outer sheath tube is fixedly connected to the outer sheath handle. The relative positions of the outer sheath handle and the main handle can be moved to adjust the overall blade extension length. The relative positions of the inner and outer sheath handles can also be moved to switch between the O-blade and I-blade functions. This solution can meet the surgeon's needs for different electrosurgical unit lengths during surgery and provide multiple functions in a single electrosurgical unit.

Provided is an extension catheter having a tubular portion thereof that is unlikely to be deformed into a distorted shape even when inserted into a curved portion inside a body. The extension catheter can be inserted into a catheter and protrude from a distal-side opening of the catheter, the extension catheter having a tubular member and a linear member having a distal end thereof fixed to the tubular member. The tubular member has a tubular portion and a tapered portion located more on the proximal-side than the tubular portion. The tubular member has a braided tube at least in the tubular portion. An opening-containing surface of the braided tube that includes a proximal-side opening is inclined. A proximal end of the opening-containing surface is closer to the linear member than a distal end of the opening-containing surface in the radial direction of the braided tube.

The present inventive subject matter is a bone fixation device where the distal end of the bone fixation device is affixed to the digit of a hand and the proximal end of the bone fixation device is connected to the a bone in the arm. There is a middle section between the proximal section and the distal section.

Disclosed is a thrombus extraction device (1) comprising: a rotating body (2) formed by a plurality of first longitudinal struts (20), wherein the first longitudinal struts (20) are fixed only at a proximal end (21) and a distal end (22), and the rotating body (2) is in an expanded configuration when the rotating body is in a free state, and is in a contracted configuration when the rotating body is inserted into a catheter; a distal body (3) connected to the distal end (22) of the rotating body (2), the distal body is in an expanded configuration when the distal body is in a free state, and is in a contracted configuration when the distal body is inserted into a catheter; wherein at least a portion of each first longitudinal strut (20) is radially expanded and circumferentially rotated during the unfolding stage of the rotating body (2) from the contracted configuration to the expanded configuration.

An implant tool system includes an implantable medical device. The implantable medical device includes a zone visual marker positioned on an exterior surface of the device. The zone visual marker includes a distal end of the zone visual marker. The distal end of the zone visual marker aligning with the proximal end of an introducer indicates when to withdraw the introducer. The zone visual marker further includes a proximal end of the zone visual marker. The proximal end of the zone visual marker aligning with the proximal end of the introducer indicates when to inflate a balloon carried by the device and affix the distal end of the implantable medical device to the target site via a fixation mechanism.

Described herein is a nasal airflow disruption apparatus, and method of use, comprising an elongate strip of flexible material having a central area extending between two distal ends. The central area comprises a narrow portion being defined by an elongate recess. The apparatus is configured such that when the strip is positioned across the bottom of a nose and the distal ends are secured to either side of the nose, the central area partially covers the nostrils and creates first and second airflow zones in each nostril. The first airflow zone is distal to the tip of the nose, allows unencumbered airflow into an out of the nostril and is created by the elongate recess. The second airflow zone is proximal to the tip of the nose, disrupts airflow into and out of the nostril and is covered by the narrow portion.

The utility model discloses an endoscope and clamp channel assembly thereof, the endoscope includes operating part and the insertion part of relatively operating part rotation, and the clamp channel assembly includes the clamp channel pipe and the clamp channel intercommunicating part for fixing in operating part, and the proximal end of clamp channel pipe is rotatably connected in the clamp channel intercommunicating part, and the distal end of clamp channel pipe is used for fixed connection with the distal end of insertion part, thereby, when insertion part rotates relative to operating part, the rotation of clamp channel pipe can follow insertion part and rotate relative to clamp channel intercommunicating part, therefore can avoid the knot of clamp channel pipe torsion, and then avoid the phenomenon of breakage and air leakage, so can effectively improve its service life.

The utility model relates to a cryoablation catheter with a supporting device, which comprises a sheath tube, an air inlet tube, an air return tube, a guide wire cavity tube, a bag body, the supporting device and a handle, the far end of the sheath tube is fixedly connected with the near end of the bag body, the near end of the sheath tube is fixedly connected with the handle, the far end of the bag body is fixedly connected with the far end of the guide wire cavity tube, and the bag body is fixedly connected with the handle. The supporting device is composed of an inner supporting piece and an outer supporting piece, the inner supporting piece is arranged in the bag body, the outer supporting piece is arranged outside the bag body, the supporting device is of a self-expanding structure, when the supporting device is converted from a compressed state to an expanded state, the inner supporting piece supports the inner wall of the bag body, and the outer supporting piece supports the outer wall of the bag body. The capsule body is tightly attached to a target area, the outer supporting piece is supported on the inner wall of a blood vessel, and a blood flow channel is established between the outer side of the capsule body and the inner wall of the blood vessel.

The present application relates to a delivery device and a delivery system, the delivery device comprising an inner sheath core, an outer sheath core, an outer sheath tube and a delivery handle, a restraint and a fixing anchor, the proximal ends of the inner sheath core, the outer sheath core and the outer sheath tube being connected to the delivery handle so as to be axially relatively movable under the adjustment of the delivery handle; the restraint being fixed to the distal end of the inner sheath core, and the fixing anchor being connected to the distal end of the outer sheath core so as to be at least partially inserted into the restraint when the inner sheath core and the outer sheath core are relatively axially moved; the fixing anchor comprising a main body and a plurality of anchor hooks, the outer wall of the main body forming a limiting groove at the proximal end side of each anchor hook; the delivery device of the present application radially compresses the wave pole of the bare stent through the restraint during the relative axial movement of the inner sheath core and the outer sheath core before the bare stent is separated from the anchor hook, so that the wave pole can be re-stored in the limiting groove, thereby driving the main body stent connected to the wave pole to be radially compressed, so as to adjust the shape and position of the covered stent during the release adjustment process.

The invention provides a blood vessel foreign body capturing device. The blood vessel foreign body capturing device comprises a guide wire, a first sleeve, a second sleeve and an outer sheath which are sequentially and coaxially arranged from inside to outside in a sleeving mode. The far end of the first sleeve is provided with an inflatable / contractible air bag; the far end of the second sleeve is provided with a sleeve device composed of a traction wire, an annular ring and a supporting rod, the two ends of the supporting rod are fixedly connected with the annular ring and the far end of the second sleeve respectively, the annular ring can be unfolded to be in a transverse state with the included angle formed between the annular ring and the axis of the blood vessel when pushed out, and the foreign matter parallel to or attached to the wall of the blood vessel can be taken out conveniently. The air bag is expanded and fixed at the far end of a foreign body in advance to prevent the foreign body from shifting, then the transversely-arranged snare is controlled to sleeve and hoop the foreign body, and finally the whole set of device is retracted into the outer sheath to be safely taken out, so that the technical problems that an existing snare is single in capturing angle and the foreign body is prone to shifting are solved.