Abstract: A method for forming a coating film of a material for enhancing bioactivity, such as a water-soluble vitamin, on a surface of a dental implant, and a dental implant produced by the method, in order to overcome the limitations in improving osseointegration capability, which result from existing physical surface treatments, such as RBM and SLA surface treatments. The methods enable the SLA-pretreated implant surface to have blood affinity and an enhanced bioactive function, thereby providing a method for producing a dental implant which has excellent biocompatibility and high osseointegration capability after the implant procedure and thus has enhanced bioactivity, and a dental implant produced by the method. The surface of the dental implant, from which organic pollutants have been removed, are coated with a bioactive material, thereby enhancing blood affinity and bioactivity of the implant and thus improving initial osseointegration capability of the implant.

Abstract: A frictionally-retained detachable dental attachment assembly or anchor device is designed to attach a dental appliance with a tooth root or implant. The assembly includes a denture attachment housing for securing in the dental appliance, an abutment attached with a tooth root or implant, and a compressible retention member with a first end in fixed attachment with the cap and a second end in snap engagement with the abutment via a frictionally-retained ball secured within a cavity of the abutment. The retention member is formed using a compressible material to allow the ball to compress and the retention member to flex while inserting the ball into the cavity. Additional friction-retained and fixed attachment configurations of the dental anchor device are provided, along with methods of securing a dental appliance in a subject's mouth by means of the friction-retained and fixed attachment dental anchor devices.

Abstract: The present invention relates to multi-piece dental implants comprising an anchor and abutment assembly and in particular, to such a dental implant system and an insert adaptor that facilitates coupling between an implant anchor and an abutment member may be coupled over a single position one-way coupling interface in a one to one manner, where the one-way coupling interface may be integrated with an anchor or coupled to an off the shelf anchor in the form of an insert.

Abstract: The invention relates to an implant (10) for anchoring in the human (optionally also in the animal) maxilla or mandible, a device (100) (an instrument) for bending an implant (10), a system, which comprises an implant (10) and a device (100) for bending an implant (10), and a method for bending an implant. As a result of the bending geometry, an implant (10) is provided which is bendable in a simple and materially-careful manner, in particular also after implantation, i.e., already anchored in the jaw bone. The device (100) for bending the implant (10) enables, as a result of the pliers-shaped design having corresponding holding (113) and support (123) units, the bending of the implant (10) in a simple manner, in particular the bending after implantation thereof, so that a treatment which protects the implantation region is ensured, in particular, no damage of the bone bed is induced. In addition, a method for bending the implant (10) is provided.

Abstract: Dental implant systems for releasable attachment of dental prostheses are shown and described. Each of the dental implant systems includes an implant body, a prosthesis body, and an abutment body with a locking device. The locking device includes a magnetically attractable member having a first end coupled to a spring and a second end. The magnetically attractable member is moveable between a locked position and an unlocked position. The dental implant system further includes a void configured to receive the second end, the magnetically attractable member being at least partially disposed within the void in the locked position., the magnetically attractable member being free of the void in the unlocked position.

Abstract: Devices and methods for placement of a self-expanding stent into the elevated region of a sinus floor are described. A mucoperiosteal flap is first elevated along the edentulous ridge. A median osteotomy along the ridge is then performed by means of a vibrating sonic scalpel, up to the maxillary sinus floor. The Schneider membrane is subsequently elevated in order to allow the positioning of the stent. The stent is characterized by shape memory features and is made of nickel-titanium. Stent diameter is determined preoperatively by means of cone-beam CT. Stent length can be modified intraoperatively. The stent shifts back to the original shape keeping the Schneider membrane elevated with a minimally invasive approach and expanding the space available for neo-osteogenesis. The nickel-titanium mesh texture of the stent optimizes the contact surface between bone and clot, increasing the neo-osteogenic potential.

Abstract: A dental impression tray comprises: a handle; and an impression-taking frame provided at one side of the handle to support an impression material from a lateral side, wherein the impression-taking frame is formed as a right and left pair, a plurality of vertical taking grooves are formed at predetermined intervals on the inner lateral side thereof, and a taking groove positioned on the left side and a taking groove positioned on the right side are provided so as to have a gradient of 10 degrees and 5 degrees, respectively.

Abstract: A method for taking an impression for producing a dental prosthesis involves: A) generating an impression of regions of the upper jaw and lower jaw of a patient using an at least two-part tray, whereby the tray is inserted into the oral cavity of the patient; B) fixing the at least two tray parts to each other or against each other; C) determining the position and orientation of the at least two tray parts with respect to each other; and D) taking the tray parts out of the oral cavity of the patient. Also disclosed is the tray for implementing the method, whereby at least one marking is arranged on the surface of each tray part, and a device for intra-oral determination of the orientation and position of the marking and, thus, the at least two tray parts, is provided, whereby the device comprises a computer and a recording facility.

Abstract: The present invention relates to a method for the manufacturing of an oral template from a 3D digital data, such that an essentially optimal restoration process of the original structure and functionality of a patient's oral cavity become applicable, comprising: a) prior to a dental treatment, recording and digitizing a first three-dimensional (3D) data that represents the original anatomical structure of at least one tooth within the oral cavity of a patient, for generating a first virtual model that reflects the original anatomical structure of said at least one tooth (i.e., the virtual model of the original tooth); b) processing said first 3D data for generating a second virtual model that reflects the form of said at least one tooth after applying an optimal treatment as defined by medical practice parameters (i.e.

Abstract: Tooth brushing monitoring system is disclosed that includes a toothbrush with sensors and a base station. The sensors record data regarding the quality, quantity and location of brushing and the system can analyze the data to provide feedback on the quality of brushing. This feedback provides motivation for users to increase their brushing habits, leading to a decrease in plaque, tooth decay and gingivitis.

Abstract: The invention relates to a detection tag for the detection of the reproductive status of animals. The detection tag includes two signal transmitters, one of which is activated when the animal is mounted by another animal and the other of which is always on. It can therefore be determined whether the tag is activated or missing. A detection tag in one embodiment comprises a first surface affixable to the hide of an animal, a second and opposite surface including abradable material, first and second electronic signal transmission means configured to transmit first and second electronic signals having detectably different characteristics, the detection tag being configured such that removal of some or all of the abradable material alters the ability of the detection tag to transmit the first signal or alters a characteristic of the first signal.

Abstract: A mesh fiber member having a plurality of biodegradable fibers, the mesh fiber member being configured to induce modulated healing of damaged biological tissue when deployed proximate thereto. The strands comprise an extracellular matrix (ECM) composition or an ECM-mimicking biomaterial composition, such as poly(glycerol sebacate) (PGS), and can include a biodegradable ECM, polymeric or ECM-mimicking biomaterial composition coating.

Abstract: A device and method for intravascular treatment of an embolism is disclosed herein. One aspect of the present technology, for example, is directed toward a clot treatment device that includes a support member configured to extend through a delivery catheter and a plurality of clot engagement members positioned about the circumference of a distal portion of the support member. The clot engagement members can be configured to penetrate clot material along an arcuate path and mechanically macerate clot and release embolic particles when re-sheathed into the delivery catheter.

Abstract: A temporary vena cava filter retrieval apparatus includes an introducer sheath for establishing access into a vessel via a patient access site and a retrieval sheath having a diameter sufficiently small to pass through the introducer sheath and sufficiently large to accommodate a partially or fully uncollapsed filter.

Abstract: An implantable digestive organ is provided for the transport of materials through the digestive tract and in one particular application to an artificial large bowel for replacing all or part of a colon. The prosthetic organ of one embodiment includes an outer support structure, an expandable member or members located within the support structure, and a flexible inner member forming a conduit for passage of material. The inner member is located within the outer member and the expandable member(s) is located between the inner member and the support structure. The expandable members are expanded and contracted, or inflated and deflated to provide pumping action that pumps material through the organ. The prosthesis may also include valves or sphincters at its entrance and/or exit points where material moves into and out of the prosthesis. An implantable pump may be included for inflating and deflating the expandable members in a desired sequence.

Abstract: An implant device may include a body of a first material and defining a lumen and at least two arcuate rings of a second material embedded within the body. In one embodiment, the second material does not connect a first ring of the at least two arcuate rings to an adjacent second ring of the at least two arcuate rings.

Abstract: A tissue graft suspension device includes a platform member defining an opening, a suture having a first portion and a second portion, and a fixation member mating with the opening in the platform member. The first portion and the second portion pass through the opening such that a third portion of the suture forms a loop for attachment to a tissue graft. The fixation member includes a retaining mechanism configured to allow the first portion or the second portion to pass through the opening in a manner that decreases a size of the loop and to prevent the first portion or the second portion of the suture from passing through the opening in a manner that increases a size of the loop.

Abstract: The present invention is directed to a process for making a tissue regeneration matrix. The process comprises providing a collagen-glycosaminoglycan-tropoelastin dispersion; freeze-drying the dispersion to provide a porous freeze-dried matrix; and then crosslinking the porous freeze-dried matrix. The present invention is also directed to a tissue regeneration matrix prepared by the process.

Abstract: The invention discloses an implantable myopia lens, comprising a lens body and a plurality of sheet-shaped support arms, cut and formed along the edge of the lens body. The angle between the plane of the support arms and the plane of the lens body is between 10 and 20 degrees, making the whole of the lens a spheroid. A transparent light guide zone is arranged on the lens body. The lens body and the support arms are all made of a same hydrophilic polyacrylate material. The invention also discloses a preparation method of the implantable myopia lens. The support arms of this invention are bendable, and the bending angle thereof is automatically adjusted according to the contour of a human eye when the lens is implanted therein. The lens of the same model can be implanted into human eyes of different sizes.

Abstract: An optical lens device has an actively controllable focal length. This device comprises an element with lensing effect comprising a plurality of regions. Each such region has a corresponding refractive power for providing a corresponding focal length distinct from the focal length of at least one other region of this plurality of regions. The device further comprises at least one non-centric addressable optical element integrated in or provided on the element with lensing effect. This at least one addressable optical element is adapted for changing the transmittance of at least one of the plurality of regions in response to a control signal. The device also comprises a control means for generating the control signal.

Abstract: A regenerative respiratory tract prosthesis comprising a tubular extracellular matrix (ECM) member having a lumen therethrough, at least first and second biodegradable polymeric anchors disposed on the tubular member exterior surface. The first and second anchors can include a microneedle tissue engagement member.

Abstract: Described is a transcatheter mitral valve. The mitral valve includes a saddle-shaped annulus frame with two prongs extending therefrom. Two leaflets are attached with the frame and prongs to form a bi-leaflet mitral valve. The frame is collapsible to a collapsed configuration that allows for delivery and implantation at a mitral position. When at the mitral position, the mitral valve expands into an open configuration and is secured in place by a fixture, such as clamps that extend from the frame.

Abstract: A valve replacement implant may include an expandable anchor member having a proximal end and a distal end, the anchor member being actuatable between a delivery configuration and a deployed configuration. A plurality of locking mechanisms may be configured to secure the anchor member in the deployed configuration. Each locking mechanism may include an axially movable post including a leg portion extending inwardly therefrom, and a receiving portion fixed to the anchor member, the receiving portion being configured to slidably receive the post. A plurality of valve leaflets may be disposed within a central lumen of the anchor member, the plurality of valve leaflets being secured to the leg portions of the plurality of locking mechanisms. The plurality of locking mechanisms may be releasably attached to a delivery device.

Abstract: A heart valve assembly (100) includes a heart valve (116), a self-expandable and collapsible stent (112), and a sealing member (114). The stent (112) includes an inflow end (120) and an outflow end (122), and surrounds and supports the heart valve (116). The sealing member (114) is connected to the inflow end (120) of the stent (112) and extends around a periphery of the stent (112). The sealing member (114) is connected to the inflow end (120) of the stent (112), overlaps a portion of the heart valve (116), and extends around an outer periphery of the stent (112).

Abstract: A replacement heart valve has an expandable frame configured to engage a native valve annulus and a valve body mounted to the expandable frame. The valve body can have a plurality of valve leaflets configured to open to allow flow in a first direction and engage one another so as to close and prevent flow in a second direction, the second direction being opposite the first direction.

Abstract: Systems and methods treat a heart valve using a magnetically adjustable annuloplasty ring attached to or near a cardiac valve annulus. A changing magnetic field may be used to selectively increase or decrease a circumference of, or otherwise modify the shape of, the implanted annuloplasty ring. The adjustable annuloplasty ring includes a tubular body member, one or more adjustable members, and an internal magnet within the tubular body member. The tubular body member and the one or more adjustable members form a ring shape. The internal magnet is configured to rotate in response to a rotating external magnetic field. The internal magnet is coupled to the one or more adjustable members to change a dimension of the ring shape as the internal magnet rotates. A system for treating a heart valve may include an external adjustment device having one or more external magnets to generate the rotating external magnetic field.

Abstract: Aortic regurgitation can be treating by implanting in the aortic annulus a transvalvular intraannular band. The band has a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion. The central portion is positioned so that it extends transversely across a coaptive edge formed by the closure of the aortic valve leaflets. The band may be implanted via translumenal access or via thoracotomy.

Abstract: Apparatus and methods are described herein for anchoring a prosthetic heart valve. In some embodiments, an apparatus includes a tether attachment member that includes a base member that defines at least a portion of a tether passageway through which a portion of a tether extending from a prosthetic heart valve can be received therethrough. The base member defines a locking pin channel that intersects the tether passageway. A locking pin is disposable within the locking pin channel and movable between a first position in which the locking pin is at a spaced distance from the tether passageway, and a second position in which the locking pin intersects the tether passageway and can engage the portion of a tether disposed therein to secure the tether to the tether attachment member.

Abstract: A method of repairing a heart valve provides intravascular access for repair of a heart valve through a ventricular trans-septal approach. An external guide catheter can be inserted through a vein of a patient into the right ventricle via the right atrium. An internal guide catheter can be inserted through the external guide and can provide access to the septum for a puncture tool to create an opening through the septum to the left ventricle. The internal guide can then be advanced into the left ventricle and used to guide a deployment catheter that deploys a repair device onto the heart valve.

Abstract: Biological constructs that can be engineered into a variety of shapes and employed to treat, augment and/or support damaged or diseased mammalian organs and/or tissue related thereto. The shapes include jackets and bands that are configured to encase a preselected region of a mammalian organ.

Abstract: An implantable heart system for the treatment of a heart with impaired function. The implantable heart system includes a prosthetic heart chamber assembly and a cooperative mechanism. The prosthetic heart chamber assembly comprises a first prosthesis, a second prosthesis, and a prosthetic heart chamber interconnecting the first and second prostheses. One of the prostheses is a valve and the other prosthesis is either a valve or a tubular prosthesis. The cooperative mechanism is selected from the group consisting of an adhesive; an anchor; a filler material; a shape memory element; an expandable member; a pumping agent; material attached to, or forming a part of, the wall of the prosthetic heart chamber; and combinations thereof.

Abstract: To provide an artificial annulus sizing tool capable of determining a suitable size for an artificial annulus to be implanted in a patient. [Solution] An artificial annulus sizing tool comprising an annular core material and a cover material covering the core material to a predetermined thickness, the cover material portion being attached to the annulus using suturing thread for implanting artificial annuli, and the part of the cover material engaged with the suturing thread being broken after a suitable artificial annulus size is determined for the annulus, allowing for removal from the suturing thread.

Abstract: Provided herein are compositions and medical devices, and in particular, biodegradable scaffolds capable of repairing and replacing cartilagenous meniscuses. Also provided herein are methods of using scaffolds for treating degenerative tissue disorders. In certain embodiments, such scaffolds can promote tissue regeneration of a temporal mandibular joint (TMJ) meniscus.

Abstract: Techniques for joint fusion are described, including obtaining a visual image of a joint and two or more bones connected by the joint, examining the visual image to confirm a pathology and identify a location in which to insert an implant, creating an incision in a tissue adjacent to the joint, preparing the location for insertion of the implant, inserting the implant into the joint using one or more tools, the one or more tools including a drill guide. Some embodiments include packing an implanted or implantable screw with a material using a packing tube.

Abstract: A method of reinforcing a femoral neck comprises creating a bore proximate to at least one of a Ward's triangle and a greater trochanter, creating at least one cavity in a cancellous bone region of the femoral neck, inserting a substantially collapsed support structure through the bore and into the at least one cavity, expanding the support structure, and allowing at least a portion of the load from the femoral neck. bone to he transferred to the support structure. The support structure compresses at least a portion of the cancellous bone upon expansion. A cavity created by the expansion is adapted to receive a filler material such as, but not limited to, bone cement.

Abstract: Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient's joint. The data can be used to create a model for analyzing a patient's joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.

Abstract: The disclosure relates to an intervertebral disc implant comprising a first construct comprising a continuous layer of nucleus pulposus (NP) tissue directly or indirectly on and integrated with a substrate, and a second construct surrounding the first construct comprising one or more continuous layers of annulus fibrosus (AF) tissue on and adherent to a scaffold, wherein the AF tissue, which is composed of single or multiple adherent layers, is integrated with the NP tissue. The disclosure also relates to methods of preparing the multi-tissue intervertebral disc and using the intervertebral disc as an implant.

Abstract: An angulating spinal plate assembly for fixation and/or support of bones of the spinal column is provided. The angulating bone plate includes interleaved, arcuate sheets that facilitate relative motion between first/second elements. An implant assembly is also provided that includes an angulating bone plate and associated first/second intervertebral plates that extend therefrom. The angulating bone plate generally includes an interleaved elements, e.g., an upstanding tab that cooperates with opposing faces of an opening, that permit rotational movement as between first/second implant elements until a desired relative orientation is achieved. At such time, a fixation/locking element is generally employed to fix the first/second implant elements relative to each other. The rotational movement permitted is generally in multiple planes based on the cooperative arcuate surfaces provided in the disclosed elements, i.e., side-to-side and top-to-bottom freedoms of movement.

Abstract: An intervertebral cage includes a plurality of segments that are connected together by one or more members formed from a shape memory alloy material such that the segments are automatically moved from an initial orientation before implantation/insertion in an intervertebral space to an expanded orientation after implantation/insertion in the intervertebral space. Each of the plurality of segments may have a plurality of passageways or recesses formed therethrough, and wherein a wire formed from a shape memory alloy material extends through each of the plurality of passageways or recesses. The member may be formed from a shape memory alloy material that demonstrates shape memory effects and superelasticity properties, such as nitinol.

Abstract: A device to space vertebral members with first and second members that may have at least one ramped section. The first and second members may be positioned in a vertically overlapping arrangement with interior sides of the members facing together. The device may be positionable between a first orientation with the ramped section of the first member positioned away from the ramped section of the second member, and a second orientation with the ramped section of the first member positioned against the ramped section of the second member. The device may include a greater height measured between the exterior sides in the second orientation than in the first orientation.

Abstract: A method for implanting a glenoid component during shoulder arthroplasty is disclosed. In the method, a template is placed against a surface of a glenoid cavity of a scapula, and a bone marking tool is inserted through a cut-out guide in the template. The bone marking tool is used to create a bone mark on the surface of the glenoid cavity. A drill is aligned with the bone mark and a first pilot hole is drilled in the surface of the glenoid cavity. A locating pin of a first drill jig is placed in the first pilot hole, and a drill is inserted through a guide hole of the first drill jig to drill a second pilot hole in the surface of the glenoid cavity. Bone material is removed between the first pilot hole and the second pilot hole to create a slot in the surface of the glenoid cavity between the first pilot hole and the second pilot hole. A keel of a glenoid component is positioned in the slot, and the glenoid component is secured in the scapula. A kit is also provided for use with the method.

Abstract: A foot prosthesis having an upper part and a lower part, which is set on the ground as the user walks, one part being arranged on top of the other a certain distance away. The two parts are connected to each other at the tip of the foot. The upper part and the lower part are formed by a one-piece component. In the area near the heel, an elastic damping element is arranged between the upper part and the lower part and is connected to the upper part and/or to the lower part. A compressible but longitudinally strong connecting element, which connects the upper part to the lower part, and which is guided through a recess in the damping element, is provided.

Abstract: The present disclosure provides methods and systems for receiving, with processing circuitry of an implant device, an electrical signal from a free tissue graft attached to a portion of a nerve (e.g., a nerve branch or fascicle) through an electrical conductor in electrical communication with the free tissue graft (e.g., muscle graft), the nerve having reinnervated the free tissue graft. The electrical signal from the free tissue graft has a voltage amplitude of greater than or equal to about 150 microvolts. The processing circuitry stores signal data corresponding to the electrical signal from the free tissue graft in a memory accessible to the processing circuitry.

Abstract: Embodiments of the technology include a prosthetic socket suspension device having a distal cup portion and a liner garment portion, these two portions being bonded together. In various embodiments, a distal cup may be disposed within a liner, a liner may be disposed within a distal cup, and a distal cup may be disposed between distally bifurcated internal and an external layers of a liner. Distal cup are sized and shaped to accommodate a distal portion of a residual limb of a patient. Distal cup embodiments may be formed from either a thermoplastic or thermoset plastic composition. Thermoplastic cup embodiments may be thermally reformed around the distal portion of the limb so as to create a highly conformal fit. Embodiments of the technology further include methods fabricating the prosthetic suspension device, and methods of thermally reforming the suspension device so as to fit a distal aspect of the residual limb of a patient.

Abstract: There is disclosed a method for maintaining a patent paranasal sinus ostium. In an embodiment, the method includes delivering a tubular element in an insertion state to the sinus ostium. The tubular element includes a proximal end, a distal end, and a center region between the proximal end and distal end. The method includes expanding the tubular element from the insertion state to a deployment state when located in the sinus ostium. In the deployment state, the center region confronts the sinus ostium with an outward radial force.

Abstract: Implant for supporting bodily conduits, such as blood vessels or/and grafted vessels, inside a subject. In exemplary embodiments, the implant includes a support fixedly displaceable and plastically stretchable to points along longitudinal axis of the support, when subjected to a stretching force, thereby forming a new shape, the support substantially maintains the new shape upon removal of the stretching force. The support, when forming the new shape, is plastically reversely compressible in a direction along the support longitudinal axis, when subjected to axially compressive force. Support may include a radially elastic portion configured to regain fixedly deformed diameter upon removal of radially compressive force applied thereto. Support is configurable as an intraluminal support for intraluminal deployment and setting in a conduit segment, or, as an external support for enveloping a conduit segment, so as to change route or/and shape of the conduit segment.

Abstract: A self-expandable stent includes a plurality of first wires and a plurality of second wires interwoven together. A first anchor member is attached to a distal end of one of the plurality of first wires. The distal end of the first anchor member is fixed to the distal end of the one of the plurality of first wires, but the proximal end is a free end and is not fixed to any of the plurality of first wires or to any of the plurality of second wires. Consequently, the self-expandable stent is capable of contacting a blood vessel wall or digestive organ wall at the optimal position when the self-expandable stent is expanded at the target site. A gap is not easily formed between the anchor member and the blood vessel wall or digestive organ wall, and thus the self-expandable stent is not easily dislocated from the target site.

Abstract: An endovascular medical device that, when inserted into a vessel having one or more dilations and one or more narrowings in close proximity, redefines the vessel opening (lumen) along the longitudinal axis of the device, separates that lumen from the excess dilated volume within the dilation, and props open the lumen within the narrowing. The device is constructed in a manner to alter the hemodynamics at the interface between the redefined lumen and excess dilated volume, to facilitate the healing process within the dilated vessel. The device is constructed in a manner to provide sufficient radial force to open a narrowed portion of the vessel, to facilitate flow through the vessel. The device is constructed substantially from bioresorbable materials so as to eventually allow for the return of normal vasomechanics and cyclic wall stresses.

Abstract: A stent in the form of a generally tubular body has multiple annularly expandable serpentine elements. The serpentine elements have arcs at the first and second element ends which point in the axial direction of the stent. Annularly expandable serpentine elements which follow one another in the axial direction are connected to one another via connectors which are arranged at the ends of the adjacent elements. The connectors extend in the circumferential direction of the stent in the non-expanded state of the stent and have a curvature in the circumferential direction. In the expanded state of the stent, the curvature is so great in the circumferential direction that the connectors project radially outward beyond the circumference of the serpentine elements.

Abstract: A delivery tool of a system for deploying medical diagnostics and/or therapy includes a deployment member and a sheath. An elastic cantilever element secured to a tubular sidewall of the deployment member, in proximity to a distal opening of a lumen formed by the sidewall, is spring biased to extend outward from the sidewall. When the cantilever element is received within the sheath, a sheath sidewall pushes the cantilever element inward, against the spring bias thereof, and a radius of curvature of the cantilever element approximately conforms to that of an outer surface of the deployment member sidewall. A helical track for receiving passage of a medical device helix fixation element therein may extend around a perimeter of the deployment member lumen, wherein a distal terminal end of the track is located in close proximity to the distal opening and generally opposite a free end of the cantilever element.