WO2015022103A1 - Führungskatheter mit stabilisierungsmechanismus und verfahren zum einführen eines führungskatheters - Google Patents
Führungskatheter mit stabilisierungsmechanismus und verfahren zum einführen eines führungskatheters Download PDFInfo
- Publication number
- WO2015022103A1 WO2015022103A1 PCT/EP2014/062537 EP2014062537W WO2015022103A1 WO 2015022103 A1 WO2015022103 A1 WO 2015022103A1 EP 2014062537 W EP2014062537 W EP 2014062537W WO 2015022103 A1 WO2015022103 A1 WO 2015022103A1
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- WO
- WIPO (PCT)
- Prior art keywords
- guide catheter
- stabilizing
- guide sleeve
- distal end
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3478—Endoscopic needles, e.g. for infusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0082—Catheter tip comprising a tool
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
- A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00809—Lung operations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A61B2017/22065—Functions of balloons
- A61B2017/22069—Immobilising; Stabilising
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0082—Catheter tip comprising a tool
- A61M2025/0096—Catheter tip comprising a tool being laterally outward extensions or tools, e.g. hooks or fibres
Definitions
- the invention relates to a guide catheter for introducing an applicator into body lumens along an insertion direction.
- the invention further relates to an electrosurgical system having a guiding catheter and to a method for introducing a guiding catheter into a body lumen along an insertion direction.
- Guide catheters of the aforementioned type are known in the art and are used in particular for guiding applicators therein, such as electrosurgical instruments for the coagulation and / or ablation of biological tissue and / or deposits which are movable, in particular in an insertion direction relative movable to the guide catheter, are arranged in a lumen of a guide sleeve of the guide catheter.
- Insertion direction As insertion direction is understood a direction in which a guide catheter is inserted into a body lumen. Due to anatomical conditions and since a guide catheter can be made pliable, the insertion direction is not necessarily an ideal straight line. Therefore, the feed direction in which the guide catheter is substantially advanced is considered as the insertion direction.
- the Insertion direction therefore also corresponds essentially to a longitudinal axis of the guide catheter.
- the guide catheter serves to introduce an applicator to an action site or an action site in the body lumen, in particular in a body tissue adjacent to the body lumen.
- this site of action lies in the bronchi of the lung.
- Achieving the site of action with a distal applicator tip often requires puncturing the body tissue adjacent body tissue.
- puncturing of a bronchial wall which may be cartilaginous, is required by an applicator tip.
- a guide catheter for introducing an applicator into body lumens along an insertion direction, which comprises a guide sleeve which encloses a lumen, and a deflection mechanism which is arranged and adapted to deflect a distal end of the guide sleeve relative to the insertion direction, and which and further comprising a stabilizing mechanism disposed and configured to support the distal end of the guide sleeve at a wall defining the body lumen.
- the invention is based on the recognition that it is not only necessary for a targeted delivery of an applicator to the site of action and for a precise puncturing of body tissue at or before the site of action to align the distal end of the guide catheter to the site of action, but also to prevent that there is a shift or change in position of the previously aligned distal end of the guide catheter due to puncturing forces and / or shocks occurring during puncturing.
- the forces to be taken up by anchoring during puncturing are directed against the puncturing direction and therefore are usually oriented obliquely or orthogonally to the insertion direction.
- the guide catheter comprises a deflection mechanism with which the distal end of the guide sleeve towards the site of action, in particular to a wall limiting the body lumen, can be aligned.
- the distal end of the guiding catheter is preferably an open end such that a distal end of the applicator or an applicator tip, also referred to as a probe tip, may exit through the distal, open end of the guiding catheter.
- the guiding catether according to the invention provides a stabilizing mechanism.
- a stabilization of the distal end of the guide sleeve on a body lumen limiting wall has the advantage that the distal end of the guide sleeve - after it has been introduced into the vicinity of the site of action and aligned by the deflection mechanism to the site of action - can be stabilized in this position in that a support is provided on a wall of the body lumen opposite the site of action.
- the stabilizing mechanism is preferably aligned so that the male forces can be absorbed as compressive forces and / or bending moments in the stabilizing mechanism and introduced into the opposite wall.
- the support of the distal end of the guide sleeve on a wall of the body lumen opposite the site of action is preferably such that the stabilization mechanism is arranged in a direction orthogonal to the insertion direction or at least obliquely to this between the site of action and an opposite wall of the body lumen. Since, as described above, the insertion direction is not always an ideal straight line due to the nature of body lumens and, at least in sections, optionally flexurally soft guide catheter, the stabilization direction can accordingly deviate from an ideal orthogonal orientation to this insertion direction.
- the stabilization direction ie an orientation of the stabilization mechanism in the stabilizing position between its distal and proximal ends, extends between the site of action and an opposite wall of the body lumen such that absorption of puncturing forces by the stabilization mechanism and a derivative of these forces is made possible, at least to a large extent in the opposite wall.
- the diverting mechanism may preferably be activated and deactivated from a proximal end of the guiding catheter so that the guiding catheter can be inserted sufficiently far into the body lumen along the direction of insertion and deflection of the distal end of the guiding sheath is achieved by activating the diverting mechanism as the distal one End is located near the site of action.
- an alignment of the distal end of the guide sleeve by the deflection mechanism such that the distal end is aligned with a wall bounding the body lumen, in particular a bronchial wall, and preferably also contacts this wall.
- the deflection mechanism can be formed, for example, by a tension element, such as a pull wire or pull rope, which is connected to a distal portion of the guide sleeve at at least one connection point, preferably a plurality of connection points, and activated from a proximal end of the guide catheter, in particular tensioned, can be.
- the applicator guided in a guide catheter also referred to as applicator or application probe, can preferably have one or two electrodes at its distal section, to which a high-frequency alternating voltage can be applied.
- Monopolar applicators require only one electrode. In use, this one electrode interacts with a large return or neutral electrode, which also communicates with the body of a patient.
- Such a bipolar electrosurgical instrument preferably has an elongate applicator shaft and two coagulation or ablation electrodes arranged one after the other on the applicator shaft in the longitudinal direction of the applicator shaft and each forming a surface portion of the applicator shaft, which are electrically insulated from each other by an insulator.
- Such coagulation or ablation instruments can be acted upon by a high-frequency (HF) voltage of different potential (bipolar), whereby the tissue surrounding the electrodes is heated to such an extent that autologous protein is denatured.
- Coagulation or ablation instruments may also include a mechanical cutting / puncturing tip, such as a trocar, or a cutting electrode.
- a first preferred embodiment of the guide catheter provides that the stabilization mechanism is arranged on a distal portion of the guide sleeve.
- This positioning of the stabilization mechanism is advantageous, since it is precisely a distal section, ie a section of the guide sleeve adjacent to the distal end of the guide sleeve and extending from it in the proximal direction, that can contribute in particular to the fact that the distal end of the guide sleeve during stabilization Dotting the intended position reserves.
- the stabilizing mechanism provides for support on a wall opposite the body lumen, it is convenient to place the stabilizing mechanism on the distal portion of the guide sleeve, since many body lumens have an extension which is supported by a wall opposite a site of action allow distal portion of the guide sleeve and a stabilizing mechanism arranged thereon.
- the stabilization mechanism comprises at least one stabilizing element.
- a stabilizing element is preferably arranged and designed in such a way that when stabilizing, i. H. when supporting, in particular pressure and / or bending is charged.
- the stabilization mechanism preferably comprises a base element. The base member is preferably disposed at a proximal end of the stabilizing mechanism.
- a distal end of the stabilizing mechanism is preferably connected to the distal end of the guide sleeve.
- This connection can be designed directly or indirectly.
- a distal end of the at least one Stabilizing element is connected to the distal end of the guide sleeve.
- a reinforcing element for example a reinforcing ring, can be arranged, which serves to connect the distal end of the guide sleeve to a distal end of the stabilization mechanism.
- a further embodiment preferably further provides that a proximal end of the stabilization mechanism is slidably connected to a proximal end of a distal portion of the guide sleeve along the insertion direction.
- This connection can also be formed directly or indirectly.
- the proximal end of the stabilizing mechanism is preferably formed by the base member, and preferably, the base member is slidably connected to the proximal end of the distal portion of the guide sleeve along the insertion direction.
- displacement of the proximal end of the stabilization mechanism in the insertion direction brings the stabilization mechanism from a release position to a stabilization position and movement of the proximal end against the insertion direction brings the stabilization mechanism back from a stabilization position to the release position can be.
- the stabilization mechanism is preferably arranged substantially outside the lumen of the guide sleeve. In this way, the stabilizing mechanism, in particular between its distal end and its proximal end, take a distance to the guide sleeve, which can facilitate the support.
- a particularly preferred embodiment results when the stabilizing mechanism has between its distal end and its proximal end an extension which is greater than three times a diameter of the guide catheter, preferably greater than a quintuple of the guide catheter, preferably greater than a tenfold of the guide catheter.
- the guide catheter preferably has an (outer) diameter that is less than the body lumen in which or at which the site of action is located to allow introduction of the guide catheter into the body lumen to the site of action.
- the stabilizing mechanism In order for the stabilization mechanism to be opposed at a location it is preferred that the stabilizing mechanism, at least in its stabilizing position, has an extension between its distal and proximal ends, which is sufficient for the stabilizing mechanism to contact the wall opposite the site of action so as to induce forces thereon can.
- the proximal end of the stabilizing mechanism can reach an opposing wall.
- a length or extent of the stabilizing mechanism is preferred, which is a multiple, in particular at least three times, preferably at least five times and particularly preferably at least ten times the diameter of the guide catheter.
- the at least one stabilizing element has a higher deformation resistance than a distal section of the guide sleeve.
- the at least one stabilizing element has a higher modulus of elasticity than a distal section of the guide sleeve.
- the deformation resistance and / or the modulus of elasticity are preferably compared at ambient temperature.
- a comparison at use temperature, preferably at body temperature is preferred.
- the guiding catheter preferably comprises an activating mechanism configured to move the stabilizing mechanism from a stabilizing position to a releasing position and vice versa. This means that the stabilization mechanism can be activated or activated via the activation mechanism.
- the base element can preferably be displaced in or opposite to the insertion direction via the activation mechanism.
- a further advantageous embodiment of the guide catheter provides that the activation mechanism is arranged at a proximal end of the guide catheter.
- the activation mechanism can be arranged on or integrated in a proximal handle of the guide catheter.
- the activation mechanism can be designed, for example, as a lever on a proximal handle of the guide catheter.
- the activation mechanism is directly or indirectly connected to the stabilization mechanism. Such use can be different Mechanisms take place.
- the activation mechanism is connected to the stabilization mechanism via at least one activation element, preferably two, three or more activation elements.
- the activation element (s) is or are preferably designed in particular to transfer tensile and / or compressive forces and / or bending moments.
- such an activation element is preferably connected to the base element of the stabilization mechanism such that the base element can be displaced relative to the guide sleeve by activating the activation element in or against the insertion direction.
- a further preferred embodiment of the guide catheter provides that the stabilization mechanism can be fixed in the stabilization position, preferably releasably.
- a latching mechanism can be provided, which is designed to fix the stabilization mechanism in the stabilization position, preferably releasably.
- Such, preferably releasable, fixation of the stabilizing mechanism in the stabilizing position, for example via a latching mechanism has the advantage that the stabilizing mechanism is held in the stabilizing position until it is actively released again from the stabilizing position. In this way, an unwanted release of the stabilization position can be prevented.
- a corresponding fixing or fixing of the stabilization mechanism in the stabilization position is advantageous.
- the stabilization mechanism has two, three or more stabilizing elements.
- the stabilizing elements are preferably arranged one behind the other in the insertion direction, in particular in the release position.
- the stabilizing elements and / or the base element can be designed, for example, rod-shaped or strip-shaped. It is further preferred that the base element is designed as a feed wire.
- two adjacent stabilizing elements are connected to one another via a joint.
- these two stabilizing elements are preferably connected to one another via a joint
- two stabilizing elements arranged adjacent to one another are preferably connected to one another via a joint.
- the base element is connected to a proximal of the stabilizing elements via a joint.
- the proximal stabilizing element is the stabilizing element, which is located farthest from the distal end of the guiding catheter.
- the joint, with which two adjacent stabilization elements are connected to each other is preferably designed as a one-sided blocking joint.
- the joint is arranged and configured such that the two stabilizing elements connected by the joint can be arranged in three orientations, namely both in the insertion direction, both orthogonal or oblique to the insertion direction, or an alignment in the two Stabilization elements an angle of 30 to 120 °, preferably of about 90 ° include, wherein the distal of the two stabilizing elements is oriented orthogonal or oblique to the insertion direction and the proximal of the two stabilizing elements in the insertion direction.
- the change between the orientations is preferably carried out by exerting pressure and / or tension over the base element in or against the insertion direction.
- two or more joints are designed as unilaterally blocking joints.
- the stabilizing mechanism has exactly one stabilizing element. It is further preferred that the base member extends at least over part of the circumference of the guide sleeve. Furthermore, it is preferred that the base element is annular and / or the stabilizing element is strip-shaped.
- the at least one stabilizing element preferably extends with its main extension direction between the distal end of the guide sleeve and the base element.
- the at least one stabilizing element is furthermore preferably designed as a sheet metal.
- the stabilization mechanism is preferably formed by the deflection mechanism, ie, during deflection of the distal end of the guide sleeve, activation of the stabilization mechanism takes place simultaneously.
- the stabilizing element whose proximal end is displaced by the base element in the insertion direction along the guide sleeve, thus on the one hand causes a deflection kung of the distal end of the guide sleeve and at the same time a support on a wall opposite the site of action. This is done in particular by a bending deformation of the stabilizing element, which is generated by the displacement of the base member in the direction of the distal end of the guide sleeve.
- the base element and / or the stabilizing element has at least one latching hook, which is arranged and configured to cooperate with a movement of the base member relative to the guide sleeve against the insertion direction with at least one complementary locking element.
- the at least one latching hook and the at least one complementary latching element are preferably arranged and designed such that the latching connection can be released again by applying a certain minimum tensile force.
- a plurality of such type configured latching hooks are present, which cooperate with the at least one or more complementary latching elements.
- the at least one latching element can be formed on a proximal end, for example a handle, of the guide catheter or of an endoscope, on the guide sleeve, on the base element and / or on a distal outlet of a working channel of an endoscope receiving the guide catheter.
- an electrosurgical system having a previously described guide catheter and an applicator designed as an electrosurgical instrument, which is movably guided in the guide sleeve of the guide catheter.
- the aforementioned object is achieved by a method for introducing a guide catheter into a body lumen along an insertion direction, comprising the steps of: inserting a distal end of a guide sleeve into a body lumen along the insertion direction, deflecting the distal end of the guide sleeve opposite the insertion direction, and supporting the distal end of the guide sleeve on a body lumen limiting wall.
- the method is particularly suitable for introducing a previously described guide catheter or a previously described electro-surgical system at or before a site of action in a body tissue adjacent to a body lumen.
- the electrosurgical system and its further developments, as well as the method and its further developments, preferably have features or method steps which they particularly make it especially suitable to be used with a guide catheter according to the invention and its training.
- FIG. 1 shows a first exemplary embodiment of a guide catheter according to the invention
- FIG. 2 shows a second exemplary embodiment of a guide catheter according to the invention.
- FIG. 3 shows the guide catheter according to FIG. 2 with latching hooks on the stabilizing element; and FIG. 4 shows the guide catheter according to FIG. 3 with the formation of the complementary one
- Locking element at the output of the working channel of an endoscope.
- FIGS. 1 to 4 show a guide catheter 1 for introducing an applicator 10 into a body lumen 2 along an insertion direction 3.
- the guide catheter 1 includes a guide sleeve 100 that encloses a lumen 101.
- FIG. 4 also shows an endoscope 200 with a working channel 210 accommodating the guide catheter 1, an optical channel 220 and a flushing channel 230.
- an applicator 10 is movable, in particular in the insertion direction 3 relative to the guide catheter movable arranged.
- the applicator 10 is a bipolar electrosurgical instrument with an elongated applicator shaft 1 1 and two coagulation or ablation electrodes 12, 13 arranged one after the other on the applicator shaft 11 in the longitudinal direction of the applicator shaft and forming a respective surface portion of the applicator shaft 11.
- the distal electrode 12 and the proximal electrode 13 are electrically insulated from each other by an insulator 14.
- the insulator 14 is arranged coaxially with the electrodes 12, 13 and likewise forms a surface portion of the applicator shaft 1 1.
- An applicator tip 15 is formed on the distal coagulation or ablation electrode 12.
- a mechanically cutting and / or puncturing tip for example a trocar, may be arranged on the distal applicator tip 15.
- a cutting electrode may be provided.
- the distal end 120 of the guide sleeve 100 is preferably designed to be open, so that a distal end of the applicator 10 with an applicator tip 15 can emerge from the distal end 120 of the guide sleeve 100 in order to be able to penetrate to a site of action in the tissue.
- the applicator 10, in particular the applicator shaft 11, is preferably designed to be bendable in order to be able to follow a deflection of a distal section 130 of the guide sleeve 100 through the deflection mechanism 110.
- the site of action at which treatment is to be performed by means of the applicator 10 is located in the area behind the point of contact of the distal end 120 of the guide sleeve 100 on the bronchial wall 4a.
- the wall preferably a bronchial wall, punctured to penetrate the applicator 10 in the wall 4a and thus to penetrate to the site of action.
- the wall preferably a bronchial wall
- high puncturing forces and shocks can occur, which can lead to a displacement or positional change of the distal end 120 of the guide catheter 1.
- FIGS. 1 and 2 show two different embodiments of such a stabilization mechanism, which are explained below.
- FIG. 1 shows a stabilizing mechanism 140 and a deflection mechanism 1 10;
- FIG. 2 shows a stabilizing mechanism 150, which at the same time is also a deflection mechanism.
- the guide catheter 1 further comprises a deflection mechanism 1 10, with which the distal end 120 of the guide sleeve relative to the insertion direction 3 can be deflected.
- a deflection mechanism 1 10 with which the distal end 120 of the guide sleeve relative to the insertion direction 3 can be deflected.
- three connection points 12 are provided on a distal section 130 of the guide sleeve 100, to which a tension element designed as puller wire 11 is connected to the distal section 130 of the guide sleeve 100.
- the deflection mechanism 110 may preferably be tensioned from a proximal end of the guide catheter.
- the puller wire 1 1 for example, to the proximal end of the guide catheter (inside or outside of the guide sleeve 100) are performed.
- the distal end 120 is deflected and aligned in the direction of a wall 4 a and preferably brought into contact with this wall 4 a.
- 1 shows a variant embodiment of a guide catheter 1 with a stabilization mechanism 140 which has a plurality of stabilization elements 141, 143, 144 and a base element 142.
- the distal stabilizing element 141 is designed to be longer than the remaining stabilizing elements 141, 143, 144 and connected with its distal end to the distal end 120 of the guide sleeve 100.
- the distal end 120 of the guide sleeve 100 can for this purpose have a reinforcing ring.
- the stabilizing elements 141, 143, 144 and the base element 142 are arranged one behind the other in the insertion direction 3, at least in the release position (not shown). In the stabilization position shown in FIG. 1, the stabilizing elements 141, 143, 144 and the base element 142 are arranged such that they form a 90 ° angle, the distal stabilizing element 141 orthogonal to the insertion direction 3 and the proximal stabilizing element 140 and the base element 142 are aligned in the insertion 3. The remaining stabilizing element 413 are partially aligned in the insertion direction 3 and partially orthogonal to the insertion direction 3.
- each case two adjacent stabilizing elements 141, 143, 144 are connected by a respective one-way locking joint 145.
- the hinges 145 may occupy different positions, with the respective adjacent stabilizing elements being either aligned in the same direction or the two stabilizing elements connected by a hinge forming an angle, as shown for example at an angle of 90 ° ,
- the cantilevered joints 145 can be brought into their different orientations.
- the base element 142 and all of the stabilization elements 141, 143, 144 are preferably arranged one behind the other in the insertion direction 3.
- at least one of the unilaterally locking joints is locked in a position in which the stabilizing elements adjacently disposed at an angle of less than 180 °, in particular an angle of 30 ° to 120 °, in particular an angle of 90 °.
- the forces occurring during the puncturing can then be absorbed in direction 5 via the stabilization mechanism 140 and introduced to the wall 4b opposite the point of action.
- FIGS. 2 to 4 show an alternative embodiment of a guide catheter 1 with an alternative stabilization mechanism 150.
- the stabilizing mechanism 150 in FIGS. 2 to 4 has exactly one stabilizing element 151, 151 '.
- the stabilizing element 151, 151 ' is connected to an annular base element 152.
- the annular base element 152 which may also be referred to as a guide ring, extends over the circumference of the guide sleeve 100.
- FIG. 4 shows no base element, but may also be present in the embodiment according to FIG. 4 (and would then be within the working channel 210 of the endoscope 200 arranged and not visible).
- a plurality of base elements preferably distributed over the length of the guide catheter 1, can be provided.
- the base element 152 has on its inner circumference a plurality of latching hooks (not shown) with which the base element 152 can be fixed in the stabilization position shown in FIG.
- the latching hooks with complementary latching elements such as ribs (not shown)
- the movement or activation of the base element 152 preferably takes place via an activation mechanism, not shown, which can preferably be actuated from the proximal end of the guide catheter 1.
- a plurality of latching hooks 154 are formed on the stabilizing element 151 'which interact with at least one complementary latching element.
- the latching element is formed by the base element 152. If a plurality of base elements are provided, the latching element is preferably formed by the distal of the base elements. In the variant shown in FIG. 4, the latching element is formed by the distal outlet of a working catheter 210 receiving a guide catheter of an endoscope 200.
- the stabilizing element 151, 151 ' is formed as a sheet metal, preferably as a flexible metal sheet, and connected with its distal end 153 to the distal end 120 of the guide sleeve 100.
- the distal end 120 of the guide sleeve 100 can for this purpose have a reinforcing ring.
- the stabilizing mechanism 150 simultaneously acts as a deflection mechanism, since upon advancement of the base element 152 in the insertion direction 3 a bending deformation of the plate 151, 151 'occurs, which leads to a corresponding deflection of the distal end 120 of the guide sleeve 100 leads.
- the bending of the stabilizing element 151, 151 'caused by the advancement of the base element 152 in the insertion direction 3 thus on the one hand causes the deflection or alignment of the distal end of the guide sleeve 100 in the direction of the site of action and at the same time ensures that the bending-stabilized element 150 ensures that during puncturing in FIG Direction 5 occurring forces can be introduced via the sheet in the site of action opposite wall 4b.
- the stabilizing element 151, 151 ' has an extension between its distal end 153 and its proximal end connected to the base element 152, which is greater than three times the diameter of the guide catheter 1 and thus also larger than the diameter of the body lumen 2 between the two walls 4a and 4b.
- the stabilization element 151, 151' both on the one hand at the distal end 120 of the guide sleeve 100 and arranged together is aligned with this distal end on or in front of the wall 4a in the region of the active site and at the same time can be supported on the opposite wall 4b.
- the stabilization mechanism 140, 150 after puncturing may preferably be released again from the stabilization position - either directly after puncturing or preferably after treatment.
- the base element 142, 152 is preferably removed with a pull. applied to the insertion direction 3. This train can preferably be applied via the activation mechanism.
- this tension preferably results in that the unilaterally locking joints 145 bring the adjacent stabilizing elements 141, 413, 144 back into the release position.
- this pull is preferably greater than a resistance force of the latching connection, so that the latching connection is released when a minimum tensile force is exceeded.
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- Otolaryngology (AREA)
- Cardiology (AREA)
- Mechanical Engineering (AREA)
- Pathology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/912,257 US20160192983A1 (en) | 2013-08-13 | 2014-06-16 | Guiding catheter having a stabilizing mechanism and method for inserting a guiding catheter |
| CN201480044262.6A CN105555217B (zh) | 2013-08-13 | 2014-06-16 | 具有稳定机构的导引导管及用于插入导引导管的方法 |
| JP2016533845A JP6316427B2 (ja) | 2013-08-13 | 2014-06-16 | 安定化機構を備えるガイドカテーテル、及びガイドカテーテルを挿入する方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013216030.5A DE102013216030A1 (de) | 2013-08-13 | 2013-08-13 | Führungskatheter mit Stabilisierungsmechanismus und Verfahren zum Einführen eines Führungskatheters |
| DE102013216030.5 | 2013-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015022103A1 true WO2015022103A1 (de) | 2015-02-19 |
Family
ID=50972709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2014/062537 Ceased WO2015022103A1 (de) | 2013-08-13 | 2014-06-16 | Führungskatheter mit stabilisierungsmechanismus und verfahren zum einführen eines führungskatheters |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20160192983A1 (de) |
| JP (1) | JP6316427B2 (de) |
| CN (1) | CN105555217B (de) |
| DE (1) | DE102013216030A1 (de) |
| WO (1) | WO2015022103A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014206976A1 (de) | 2014-04-10 | 2015-10-15 | OLYMPUS Winter & lbe GmbH | Elektrochirurgisches Instrument und Verfahren zum Einführen eines Applikators in Körperlumen |
| US10582914B2 (en) | 2016-01-15 | 2020-03-10 | Covidien Lp | Navigable endobronchial tool to access tissue outside a bronchus |
| DE102019102841A1 (de) | 2019-02-05 | 2020-08-06 | Olympus Winter & Ibe Gmbh | Lösbarer Isoliereinsatz zur Verwendung in einem Resektoskop |
| DE102019102839A1 (de) | 2019-02-05 | 2020-08-06 | Olympus Winter & Ibe Gmbh | Spülflüssigkeit für die Resektion |
| DE102019106430A1 (de) | 2019-03-13 | 2020-09-17 | Olympus Winter & Ibe Gmbh | Elektrodeninstrument und Resektoskop mit Greiffunktion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030233052A1 (en) * | 2001-03-01 | 2003-12-18 | Scimed Life Systems, Inc., A Minnesota Corporation | Catheter with thermal sensor for detection of vulnerable plaque |
| WO2004032791A2 (en) * | 2002-09-20 | 2004-04-22 | Flowmedica, Inc. | Method and apparatus for selective material delivery via an intra-renal catheter |
| US20080262301A1 (en) * | 2007-04-20 | 2008-10-23 | Wilson-Cook Medical Inc. | Steerable overtube |
| WO2010005426A1 (en) * | 2008-07-07 | 2010-01-14 | Tanscardiac Therapeutics, Llc | Epicardium payload delivery device and method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57188231A (en) * | 1981-05-14 | 1982-11-19 | Olympus Optical Co | Treating tool guide apparatus of endoscope |
| US4759748A (en) * | 1986-06-30 | 1988-07-26 | Raychem Corporation | Guiding catheter |
| US4976688A (en) * | 1989-02-03 | 1990-12-11 | Rosenblum Jeffrey L | Position-adjustable thoracic catheter |
| GB8924946D0 (en) * | 1989-11-04 | 1989-12-28 | Shiu Man F | Support system for catheter |
| US4983165A (en) * | 1990-01-23 | 1991-01-08 | Loiterman David A | Guidance system for vascular catheter or the like |
| US5306261A (en) * | 1993-01-22 | 1994-04-26 | Misonix, Inc. | Catheter with collapsible wire guide |
| US6126649A (en) * | 1999-06-10 | 2000-10-03 | Transvascular, Inc. | Steerable catheter with external guidewire as catheter tip deflector |
| US6321749B1 (en) * | 1999-09-27 | 2001-11-27 | Merlyn Associates Inc | Endotracheal tube with tip directional control and position preserving mechanism |
| US6860876B2 (en) * | 2003-05-09 | 2005-03-01 | Jack P. Chen | Versatile interventional coronary guiding catheter |
| US7879004B2 (en) * | 2006-12-13 | 2011-02-01 | University Of Washington | Catheter tip displacement mechanism |
| US8920449B2 (en) * | 2011-06-29 | 2014-12-30 | Cordis Corporation | System and method for re-entering a vessel lumen |
| CN103071230B (zh) * | 2013-01-28 | 2014-12-03 | 湖南埃普特医疗器械有限公司 | 可控弯导引导管及其制备方法 |
-
2013
- 2013-08-13 DE DE102013216030.5A patent/DE102013216030A1/de not_active Withdrawn
-
2014
- 2014-06-16 JP JP2016533845A patent/JP6316427B2/ja active Active
- 2014-06-16 CN CN201480044262.6A patent/CN105555217B/zh not_active Expired - Fee Related
- 2014-06-16 US US14/912,257 patent/US20160192983A1/en not_active Abandoned
- 2014-06-16 WO PCT/EP2014/062537 patent/WO2015022103A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030233052A1 (en) * | 2001-03-01 | 2003-12-18 | Scimed Life Systems, Inc., A Minnesota Corporation | Catheter with thermal sensor for detection of vulnerable plaque |
| WO2004032791A2 (en) * | 2002-09-20 | 2004-04-22 | Flowmedica, Inc. | Method and apparatus for selective material delivery via an intra-renal catheter |
| US20080262301A1 (en) * | 2007-04-20 | 2008-10-23 | Wilson-Cook Medical Inc. | Steerable overtube |
| WO2010005426A1 (en) * | 2008-07-07 | 2010-01-14 | Tanscardiac Therapeutics, Llc | Epicardium payload delivery device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6316427B2 (ja) | 2018-04-25 |
| CN105555217B (zh) | 2018-06-12 |
| CN105555217A (zh) | 2016-05-04 |
| JP2016529988A (ja) | 2016-09-29 |
| DE102013216030A1 (de) | 2015-02-19 |
| US20160192983A1 (en) | 2016-07-07 |
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