103 results about "Distal fixation" patented technology

Methods and systems for transvenously accessing the pericardial space via the vascular system and atrial wall, particularly through the superior vena cava and right atrial wall, to deliver treatment in the pericardial space are disclosed. A steerable instrument is advanced transvenously into the right atrium of the heart, and a distal segment is deflected into the right atrial appendage. A fixation catheter is advanced employing the steerable instrument to affix a distal fixation mechanism to the atrial wall. A distal segment of an elongated medical device, e.g., a therapeutic catheter or an electrical medical lead, is advanced through the fixation catheter lumen, through the atrial wall, and into the pericardial space. The steerable guide catheter is removed, and the elongated medical device is coupled to an implantable medical device subcutaneously implanted in the thoracic region. The fixation catheter may be left in place.

An epicardial lead installation tool having an elongated tool body extending between a tool body proximal and distal ends and encloses a tool body lumen. At least one suction pad supported by a suction pad strut extends distally to a distal end surface of the tool body distal end. A lead implantation tool extending between implantation tool proximal and distal ends is inserted through the tool body lumen to dispose the implantation tool distal end proximate to the tool body distal end. The lead implantation tool distal end is adapted to engage the distal electrode head of an epicardial lead to enable the extension of the assembly of the of the lead installation tool, the lead implantation tool and the epicardial lead through a skin incision and to apply the suction pad against the epicardium. Suction is applied through the suction pad to affix it to the epicardium while the implantation tool proximal end is manipulated to affix the distal fixation mechanism to the myocardium at the implantation site.

A guidewire for use with an implant delivery system in delivering a sheet-like implant is disclosed. The guidewire can include a distal tissue fixation member for releasable connection to a first location proximate a treatment site. An implant delivery system can include a distal guidewire port for receiving the proximal end of the guidewire. The implant delivery system is tracked over the guidewire to a selected position defined by the guidewire attachment. The tissue fixation member includes means for temporarily or reversibly fixing the distal end of the guidewire to tissue, such as bone. The means for affixing can include a K-wire, a screw, a pin or other fixation member.

An implantable medical electrical lead for applying electrical stimulation energy from an external power source and adapted to be introduced through a small diameter needle. The lead includes a lead body and a fixation assembly. The lead body includes a wire and an electrically non-conductive material. The wire forms a wound coil along a distal portion thereof. The non-conductive material covers some of the wire coil, with an uncovered distal region of the wire serving as an electrode. The fixation assembly is coupled to the uncovered distal region and includes at least one fixation member. The fixation assembly is transitionable between a contracted state and an expanded state, with the fixation member extending outwardly relative to the coil to a greater extent in the expanded state. In the expanded state, the fixation assembly serves to inhibit axial migration of the lead body.

A guidewire for use with an implant delivery system in delivering a sheet-like implant is disclosed. The guidewire can include a distal tissue fixation member for releasable connection to a first location proximate a treatment site. An implant delivery system can include a distal guidewire port for receiving the proximal end of the guidewire. The implant delivery system is tracked over the guidewire to a selected position defined by the guidewire attachment. The tissue fixation member includes means for temporarily or reversibly fixing the distal end of the guidewire to tissue, such as bone. The means for affixing can include a K-wire, a screw, a pin or other fixation member.

A hand-held electronic pedicure instrument includes a housing having an outside portion and an inside portion. The inside portion includes a battery electrically coupled to a motor which can be activated by a switch on the outside portion of the housing. The outside portion of the housing also has a handle. The motor provides rotational output to a shaft extending from the inside portion of the housing, through an opening in the housing and beyond the outside portion of the housing, the shaft having a distal end. The instrument further has a wheel having proximal and distal surfaces. The distal end of the shaft secures to the proximal surface of the wheel. An attachment has a proximal portion that is removably secured to the distal surface of the wheel. The attachment has a distal portion having an abrasive material.

The invention relates to an occluder for closing a passage in a circulatory system comprising an expandable fixation unit for fixing the occluder on the passage, wherein the occluder can be transferred in the passage from a compact appearance into an expanded appearance. The occluder has a distal and a proximal axial part, in which the fixation unit is pivotally held. According to the invention, the fixation unit comprises distal fixation arms and proximal fixation arms, wherein the distal fixation arms are pivotally held in the distal axial part and the proximal fixation arms are pivotally held in the proximal axial part. The distal and the proximal fixation arms have free ends, which are interconnected by means of connecting members that can be moved relative to the fixation arms, wherein in each case a distal fixation arm is connected to a proximal fixation arm located diagonally opposed thereto. Said occluder is suited in particular for closing a ventricular septal defect (VSD).

Method for positioning a viewing axis in relation to a distal fixation hole (2) for an intramedullary nail (1). A rigid support (3) is fixed to the proximal end of the nail (1). An adjustable viewing device (9) is mounted on the rigid support (3). A coarse adjustment is done of the length of the rigid support according to the length of the nail (1). A coarse adjustment is done in order to move the viewing device (9) closer to the nail, taking account of the patient's build. A precise adjustment is done of the position of the viewing device in relation to the nail, involving the translational and / or rotational movement of the viewing device in a plane perpendicular to the longitudinal axis of the viewing device (Z).

A subcutaneously implantable lead includes a coil disposed along a portion of the lead, and a lead tip coupled to a distal end of the lead. The lead tip includes at least one component that is movable relative to the distal end of the lead and configured to anchor the lead tip in subcutaneous tissue.

The present invention discloses a modulized orthopedic robot used for distal fixation of auxiliary intramedullary nail. It includes the following main components: vertical motion joint A, vertical motion joint B, horizontal motion joint LA, horizontal motion joint B, base seat, connecting plate A, connecting plate B, guide joint A, guide joint B and four step-by-step motors. Said invention also provides their connection mode and its operation method and application field.

A medical fluid delivery system is provided including a steerable, guide catheter, a delivery catheter adapted for deployment at a targeted tissue site using the steerable guide catheter, the delivery catheter including a proximal port, a distal port, and a lumen extending between the proximal and distal ports; a distal fixation element coupled to the delivery catheter so as to position the distal port adjacent the targeted tissue site; and a flexible hollow needle adapted to be advanced through the delivery catheter lumen, the flexible needle including a tissue-piercing distal tip for extending from the distal port of the delivery catheter for advancement into the targeted tissue site and a proximal end for extending from the proximal port of the delivery catheter through which a medical fluid is delivered.

This invention is an endoluminal device including a stent; a tubular graft supported by the stent, wherein the graft comprises a proximal opening and a distal opening; and a variable diameter ring adjacent one of said openings, wherein the variable diameter ring comprises a coiled length of wire having two ends and forming at least one winding around the tubular graft. This invention also relates to the methods of treating an aneurysm and making the endoluminal device.

An implantable electrode arrangement for a cochlear implant system is described. The arrangement includes a flexible intracochlear electrode array having an outer surface with electrode contacts for applying cochlear stimulation signals to target neural tissue within the implanted cochlea. A flexible extracochlear electrode lead is coupled at a lead proximal end to an implanted signal processor that provides the cochlear stimulation signals, and connected at a lead distal end to a proximal end of the electrode array. A lead holder is connected to the lead distal end and has an initial shape. The lead holder is malleable and adapted to be intra-surgically deformed into and retain a new desired shape so as to secure the lead distal end at the electrode opening into the implanted cochlea and decouple post-surgical mechanical strain at the lead distal end from the electrode array.

A radio frequency (RF) treatment flexible endoscope, for the in depth destruction of tumors by endo luminal access, like in a lung, esophagus, colon, rectum, etc . . . The electrodes (2′,2″) working in bipolar mode, deploy laterally and in parallel from the endoscope main body (1), reaching a tumor deeply located in the organ parenchyma. The use of different disposable distal end portions (15) of the endoscope allows the deployment of the electrodes (2′,2″) at different distances one from each other, in order to fit the destruction are to the tumor's size and shape. The deployment of the parallel electrodes (2′,2″) from the endoscope's main body (1) is controlled by motor drives (4) or a mechanical handled system (3), in order to reach the tumor with near a millimeter precision. In order to fix the endoscope's distal end to the tissue, so to allow a perfect parallel deployment of the electrodes, an inflating cuff (5) is placed at the opposite side of the distal end, as well as a suction system, with its holes (21) placed near the electrodes' deployment location. An external RF generator and a imaging system are associated to the use of the device.

The invention relates to an orthopedics department reset positioning robot, which solves the technical problem that an existing orthopedics department operation robot is low in reset precision during an operation and comprises a reset robot body, a navigation robot and a positioning robot body, the reset robot body comprises a reset platform, a far-end fixator and a far-end reference frame, and the far-end reference frame is fixed to the far-end fixator; the far-end fixator comprises a connecting base plate, a movable connecting plate, a first locking device, a reference frame, a first connecting side plate, a second connecting side plate, a first fixed sleeve, a second fixed sleeve, a fixing plate, a first fixed needle, a second fixed needle, a third fixed sleeve, a fourth fixed sleeve, a third fixed needle and a fourth fixed needle. The invention is widely applied to orthopedic surgery.

An access port for performing surgery transvaginally is provided. The access port includes an elongated flexible member having proximal and distal ends and a central portion therebetween, and a retention mechanism formed on the distal end of the elongated member. The retention mechanism includes a first configuration for inserting the distal end of the elongated member within an opening and a second configuration for selectively securing the elongated member within an opening. Also provided is a method of performing a transvaginal surgery. The method includes providing an access port including a retention mechanism configured to selectively retain the access port within the vagina of a patient, forming an incision in the wall of the vagina into the abdomen of the patient, inserting a distal end of the access port into the vagina and through the incision, and activating the retention mechanism to secure the distal end of the access port within the abdominal cavity of the patient.

An adjustable support-type thrombus extraction device of the present invention comprises: an expandable stent 10, a sleeve, a first operation wire and a second operation wire; the expandable stent 10 comprises a proximal end and a distal end; the far end of the sleeve is connected with the near end of the expandable stent, and the near end of the sleeve is provided with a connecting piece; the connecting piece has a fixed point and a through hole; the first operation wire penetrates through the through hole and can slide in the sleeve, and the first operation wire is fixedly connected with the far end of the expandable stent; the second operation wire is fixedly connected to the fixed point of the connecting piece; and the near ends of the first operation wire and the second operation wire are used for in-vitro handheld operation. An operation handle is not needed, the expansion diameter of the stent is controllable, expansion and folding of the stent are achieved through relative movement between a supporting wire and a traction wire, the controllability of operation is higher, left and right hands are jointly used for control, and the habitual problem of single-hand control does not need to be considered. Meanwhile, the first operation wire and the second operation wire can be independently controlled, so that the problem that the expandable stent extends to the far end in the contraction process can be avoided, and the possibility that thrombus falls off accidentally is reduced.

An implantable electrode arrangement for a cochlear implant system is described. The arrangement includes a flexible intracochlear electrode array having an outer surface with electrode contacts for applying cochlear stimulation signals to target neural tissue within the implanted cochlea. A flexible extracochlear electrode lead is coupled at a lead proximal end to an implanted signal processor that provides the cochlear stimulation signals, and connected at a lead distal end to a proximal end of the electrode array. A lead holder is connected to the lead distal end and has an initial shape. The lead holder is malleable and adapted to be intra-surgically deformed into and retain a new desired shape so as to secure the lead distal end at the electrode opening into the implanted cochlea and decouple post-surgical mechanical strain at the lead distal end from the electrode array.

The invention relates to a multifunctional vertebral body former, which comprises a balloon structure and a conveying pipe structure, the conveying pipe structure comprises a shape memory alloy pipe,a sliding block and an outer pipe adjusting handle, a balloon outer pipe and a balloon are sleeved with the shape memory alloy pipe, and the near end of the shape memory alloy pipe is fixedly connected with the far end of a sliding block; the near end of the sliding block is detachably connected with the balloon structure through a first clamping lug; the outer surface of the sliding block is provided with a threaded structure, the outer surface of the sliding block is sleeved with an outer tube adjusting handle with an internal threaded structure, the outer tube adjusting handle is rotated todrive the sliding block to move front and back, and therefore the protruding amount of the far end of the shape memory alloy tube relative to the far end of an outer tube and the protruding amount ofthe far end of the balloon relative to the far end of the shape memory alloy tube are controlled. The multifunctional vertebral body former is simple in structure and easy to operate, vertebral dilation of a bone drill and pre-dilation of a balloon catheter are integrated on one instrument, surgical operation is simplified, surgical time is shortened, surgical efficiency is improved, and meanwhile physical requirements of doctors and economic burdens of patients are reduced.

The invention discloses an anatomical ankle prosthesis with a fixing pad. The anatomical ankle prosthesis comprises a tibia side component, the fixing pad and a talus side component and is characterized in that the top end of the tibia side component is provided with an upper supporting surface, four projection first dowels are fixedly arranged at four corners of the upper supporting surface respectively, and the middle of the tibia side component is fixedly connected to the bottom middle of an amputated tibia far end through a recess screw. The anatomical ankle prosthesis has advantages that the middle of the tibia side component is fixedly connected to a talus far end through the recess screw while the upper supporting surface are fixedly connected with the tibia far end through the four first dowels respectively, the four first dowels are in isosceles trapezoidal arrangement, stability in connection between the tibia side component and the amputated tibia far end is achieved, a lower slide surface at the bottom end of the fixing pad is in slide connection with an upper slide surface at the top end of the talus side component, and the upper supporting surface, the lower slide surface and the upper slide surface are all arc and matched with an articular surface of the tibia far end in radian to make the prosthesis better accord with a real human ankle structure.

A left atrial appendage closure apparatus for obstructing the left atrial appendage, comprises a sealing plate and an anchored plate. The sealing plate is in a mesh structure and arranged with a choke membrane inside, in addition, the sealing plate adopts a tubular member for the distal fixation and is connected with the anchor plate by the tubular member. The proximal end of the sealing plate is fixed with a fastener provided with a structure connecting a convey device, meanwhile, the end of the tubular member at the other side away from the end fixed the sealing plate is arranged with a plurality of supporting rods, which are intersecting radially arranged to form the anchored plate.

The invention relates to a device for transanally introducing an infusion into the rectum or colon of a patient, said device comprising a catheter with a catheter shaft and an inflatable balloon, comprising a distal terminal balloon section of larger radius and generally spherical or discoid shape, and, disposed proximal to this distal terminal balloon section, a tapered balloon section having a reduced radius, the tapered balloon section of the device being adapted to be placed transanally, such that the enlarged distal terminal balloon section is placed intrarectally wherein the balloon is fixed onto the catheter shaft only at fixation points located at the ends of the balloon, wherein both balloon ends taper approximately to a shaft dimension of the catheter shaft supporting the balloon; according to the present invention, the difference between the larger radius of the distal terminal balloon section and the reduced radius of the proximally adjacent, tapered balloon section is either in the pressurized state of the balloon at 30 mbar, smaller than the difference between the larger radius of the distal terminal balloon section and the reduced radius of the proximally adjacent, tapered balloon section in the pressurized state of the balloon at 100 mbar, or is in the inflated, but unpressurized state of the balloon greater than the distance between the distal end of the catheter shaft on the one hand and the distal fixation point of the balloon to the catheter shaft on the other hand.

An interphalangeal prosthesis (10) includes a mobile element (12), a proximal fixation element (22), and a distal fixation element (24). The mobile element (12) includes a proximal portion (42, 62, 94) and a distal portion (43, 64, 92), and the proximal portion includes three proximal mobile coupling contiguous surfaces (46, 48, 50) and a proximal mobile coupling protrusion (52), and the distal portion includes a distal coupling mobile surface (54) and a distal mobile coupling protrusion (56), and the proximal portion and the distal portion move relative to each other primarily in an axis of rotation perpendicular to a plane that extends through the proximal mobile coupling protrusion, the three proximal mobile coupling contiguous surfaces, the distal coupling mobile surface, and the distal mobile coupling protrusion in an implanted configuration. The proximal fixation element (22) couples to the three proximal mobile coupling contiguous surfaces and the proximal mobile coupling protrusion of proximal portion, and couples to a joint bone surface and a bone canal. The distal fixation element (24) couples to the distal coupling mobile surface and the distal mobile coupling protrusion, and couples to an opposing joint bone surface and a second bone canal.

The invention discloses a winding type net disc support and a conveying device thereof, and belongs to the technical field of vascular intervention medical treatment. The device comprises a conveying device and thrombus taking supports, the conveying device comprises an outer conveying pipe and a support fixing pipe which are coaxially arranged from outside to inside, at least one thrombus taking support is fixed to the far end of the support fixing pipe, and a head end guide cap is arranged at the far end of the support fixing pipe; the thrombus taking support is made of a cylindrical woven net rack with a shape memory effect, and a far-end opening of the cylindrical woven net rack turns up outwards and is subjected to heat treatment shaping. The thrombus taking support with the far-end opening turned outwards is arranged on the support fixing tube, the outwards-turned thrombus taking support can make close contact with the inner wall of a blood vessel, thrombus is collected in the curled space of the thrombus taking support after being scraped, and the thrombus taking effect and the thrombus extraction efficiency can be improved; when thrombus is scraped, the curled thrombus taking support is not prone to scratching the blood vessel wall; and when the thrombus taking support is recovered after being released, the curled thrombus taking support can be smoothly collected into the conveying outer pipe.

A flexible continuum structure capable of realizing a posture feedback is provided. The flexible continuum structure can comprise a flexible continuum structure body and a posture feedback mechanism. The flexible continuum structure body can comprise a distal structural body, a proximal structural body and a middle connecting body. The distal structural body can comprise distal spacing disks, a distal fixation disk and distal structural backbones. The proximal structural body can comprise proximal spacing disks, a proximal fixation disk and proximal structural backbones. The middle connecting body can comprise a proximal guide channel fixing plate, a distal guide channel fixing plate and a structural backbone guide channel. One end of the structural backbone is connected to the proximal fixation disk, and the other end passes through the proximal spacing disks, the structural backbone guide channel and the distal spacing disks and is then securely connected to the distal fixation disk.

A left atrial appendage closure apparatus for obstructing the left atrial appendage, comprises a sealing plate and an anchor plate. The sealing plate is a mesh structure and arranged with a choke membrane inside. In addition, the sealing plate adopts a tubular member for distal fixation and is connected with the anchor plate by the tubular member. The proximal end of the sealing plate is fixed with a fastener and is provided with a structure to connect to a convey device. The end of the tubular member at the other side away from the end connected to the sealing plate is arranged with a plurality of supporting rods, which intersect radially to form the anchor plate.