Abstract: A lead has a helix at a distal end of a rotatable shaft. Prior to implantation of the lead, the helix has a first configuration comprising an electrically active surface coated with an electrically insulative layer of a biologically dissolvable material to render the helix electrically inactive. Upon fixation of the helix into an organ, the helix has the first configuration and a pin is in electrical contact with the organ to detect proper fixation of the helix into the organ. Subsequent to fixation of the helix into the organ, the helix has a second configuration comprising an electrically active surface exposed upon dissolving of the electrically insulative layer of the biologically dissolvable material to render the helix electrically active.

Abstract: A lead has an electrically controlled switch at a proximal end of a rotatable shaft. The electrically controlled switch has a first configuration to electrically connect a first electric conductor to a second electric conductor for electrically activating the pin and has a second configuration to electrically connect the first electric conductor to the rotatable shaft for electrically activating the helix. Proper fixation of the helix to an organ is determined by switching the electrically controlled switch to the first configuration to render the pin electrically active and to electrically deactivate the helix. Upon determination of proper fixation of the helix to the organ, the electrically controlled switch is switched to the second configuration to render the helix electrically active and to electrically deactivate the pin.

Abstract: A lead comprises a mechanical switch at a proximal end of a rotatable shaft. The mechanical switch has a first position to electrically connect a first electric conductor to a second electric conductor for electrically activating a pin and has a second position to electrically connect the first electric conductor to the rotatable shaft for electrically activating a helix. Proper fixation of the helix to an organ is determined by inserting a stylet into the mechanical switch to render the pin electrically active and the helix electrically inactive. Upon determination of proper fixation of the helix to the organ, the stylet is removed from the mechanical switch to render the helix electrically active and the pin electrically inactive.

Abstract: A lead has a helix at a distal end of a rotatable shaft. Prior to implantation of the lead, the helix has a first configuration comprising an electrically active surface coated with an electrically insulative layer of a biologically dissolvable material to render the helix electrically inactive. Upon fixation of the helix into an organ, the helix has the first configuration and a pin is in electrical contact with the organ to detect proper fixation of the helix into the organ. Subsequent to fixation of the helix into the organ, the helix has a second configuration comprising an electrically active surface exposed upon dissolving of the electrically insulative layer of the biologically dissolvable material to render the helix electrically active.

Abstract: A lead comprises a mechanical switch at a proximal end of a rotatable shaft. The mechanical switch has a first position to electrically connect a first electric conductor to a second electric conductor for electrically activating a pin and has a second position to electrically connect the first electric conductor to the rotatable shaft for electrically activating a helix. Proper fixation of the helix to an organ is determined by inserting a stylet into the mechanical switch to render the pin electrically active and the helix electrically inactive. Upon determination of proper fixation of the helix to the organ, the stylet is removed from the mechanical switch to render the helix electrically active and the pin electrically inactive.

Abstract: A lead has an electrically controlled switch at a proximal end of a rotatable shaft. The electrically controlled switch has a first configuration to electrically connect a first electric conductor to a second electric conductor for electrically activating the pin and has a second configuration to electrically connect the first electric conductor to the rotatable shaft for electrically activating the helix. Proper fixation of the helix to an organ is determined by switching the electrically controlled switch to the first configuration to render the pin electrically active and to electrically deactivate the helix. Upon determination of proper fixation of the helix to the organ, the electrically controlled switch is switched to the second configuration to render the helix electrically active and to electrically deactivate the pin.

Abstract: A medical implantable lead comprises a conduction controlling means, which at least during an initial stage after implantation is capable of rendering a first contact surface electrically inactive and which is capable of rendering the first contact surface electrically active after the initial stage. By means of the inventive lead it is possible to detect whether the helix is sufficiently screwed into the tissue or not.

Abstract: A suture sleeve for securing a medical implantable lead in position in relation to a human or animal body, has a tubular body of a resilient material defining a through bore in the longitudinal direction of the suture sleeve and being formed with one or more longitudinal spaced, circumferential suture grooves on the outside and two or more grip enhancing projections around the inner circumference of the through bore in at least an area radially inward of a suture groove. The suture sleeve is formed with two or more stiffening protuberances in the bottom along the circumference of the suture groove such that the bottom of the suture groove deviates from circular as seen in cross section. The, stiffening protuberances are positioned radially outside of the respective grip enhancing projections on the inside. A method for manufacturing such a suture sleeve is also described.

Abstract: An implantable lead has a distal lead portion with at least one electrode electrically connected to a connector ring through a conductor running in a lumen of the lead. A proximal lead portion includes the connector ring, a connector pin and a connector coupling mechanically and coaxially connected to each other with the connector coupling as a bridging element. A rotational lock in the form of a circumferential element of an elastically deformable, flexible material is provided in the connector coupling in the interface between the coupling and the connector ring. This rotational lock prevents any rotation of the connector pin to be propagated into a rotation of the connector coupling and consequently reduces the risk of damages to internal lead components due to any such unintentional coupling rotation.

Abstract: The invention relates to a medical implantable lead of the kind being adapted to be implanted into a human or animal body for monitoring and/or controlling of an organ inside the body. The lead comprises in a distal end a tubular header (3) inside which a shaft (7) is rotatable as well as extendable and retractable arranged and carries in a distal end a combined fixation means and electrode member in form of a helix (4), which is provided with a first contact surface being electrically connectible to a connector at the proximal end of the lead by means of an electric conductor (8), and which by means of the shaft is rotatable in relation to the lead and extendable out from the distal end to be able to fixate the distal end of the lead to the organ by being screwed into the tissue. The shaft also carries a second contact surface (13) being positioned on or adjacent a proximal portion of the helix and being connectible to a connector at the proximal end of the lead by means of an electric conductor (8).

Abstract: A suture sleeve for securing a medical implantable lead in position in relation to a human or animal body, has a tubular body of a resilient material defining a through bore in the longitudinal direction of the suture sleeve and being formed with one or more longitudinal spaced, circumferential suture grooves on the outside and two or more grip enhancing projections around the inner circumference of the through bore in at least an area radially inward of a suture groove. The suture sleeve is formed with two or more stiffening protuberances in the bottom along the circumference of the suture groove such that the bottom of the suture groove deviates from circular as seen in cross section. The stiffening protuberances are positioned radially outside of the respective grip enhancing projections on the inside. A method for manufacturing such a suture sleeve is also described.

Abstract: An implantable lead has a distal lead portion with at least one electrode electrically connected to a connector ring through a conductor running in a lumen of the lead. A proximal lead portion includes the connector ring, a connector pin and a connector coupling mechanically and coaxially connected to each other with the connector coupling as a bridging element. A rotational lock in the form of a circumferential element of an elastically deformable, flexible material is provided in the connector coupling in the interface between the coupling and the connector ring. This rotational lock prevents any rotation of the connector pin to be propagated into a rotation of the connector coupling and consequently reduces the risk of damages to internal lead components due to any such unintentional coupling rotation.

Abstract: A suture sleeve has a tubular body of an elastic material which is adapted to be positioned in a human or animal body and is provided with a through bore to allow introducing of a lead or other elongated and flexible body into the bore for implantation of the lead via the suture sleeve. At least a portion of the through bore is formed with a non-circular cross section. The invention also relates to a method for positioning of a suture sleeve and a lead in relation to each other.