阅读说明：本技术 导管的手柄和相应的导管 (The handle of conduit and corresponding conduit ) 是由 F.韦斯特霍夫 N.罗思富克斯 于 2018-04-09 设计创作，主要内容包括：本发明涉及一种用于导管(1)的手柄,该导管具有内轴(9)和可伸缩轴(8),其中,手柄(2)具有：壳体(11)、拉索(18)和活动地安装在壳体(11)上的释放按钮(4)。为避免拉索绕内轴缠绕,套筒(16)被紧固在壳体(11)中,并且制动软管(17)在所述套筒的连续通道(21)中沿纵向方向上活动地引导,其中,制动软管(17)具有用于布置拉索(18)的第一连续通道(31)和用于布置内轴(9)的第二连续通道(32),其中,制动软管(17)被设计成使得其在第一状态中相对于所述套筒(16)的位置通过所述释放按钮(4)被固定,并且使得,在致动所述释放按钮(4)之后,处于第二状态的制动软管(17)与所述拉索(18)一起沿所述套筒(16)的纵向方向并且相对于所述套筒(16)和所述内轴(9)能够在近侧方向上位移,以缩回可伸缩轴(8),其中,可伸缩轴(8)可以连接到所述拉索(18)。本发明还涉及具有这种手柄(2)的导管(1)以及用于操作这种导管(1)的方法。(The present invention relates to a kind of handles for being used for conduit (1), the conduit has inner shaft (9) and retractable spindle (8), wherein, handle (2) includes shell (11), drag-line (18) and the release button (4) being movably mounted on shell (11).To avoid drag-line from winding around inner shaft, sleeve (16) is fastened in shell (11), and air-brake coupling hose (17) in the continuous passage (21) of the sleeve along the longitudinal direction on actively guide, wherein, air-brake coupling hose (17) has the second continuous passage (32) for arranging the first continuous passage (31) of drag-line (18) and for arranging inner shaft (9), wherein, air-brake coupling hose (17) is designed to make it to be fixed in a first state relative to the position of the sleeve (16) by the release button (4), and make, after activating the release button (4), air-brake coupling hose (17) and the drag-line (18) in the second state are together along the longitudinal direction of the sleeve (16) and relative to the sleeve (16) and the inner shaft (9) It can be displaced in a proximal direction, to retract retractable spindle (8), wherein retractable spindle (8) may be coupled to the drag-line (18).The invention further relates to the conduit (1) with this handle (2) and the methods for operating this conduit (1).)

1. one kind is used for the handle of conduit (1), the conduit has inner shaft (9) and retractable spindle (8), wherein the handle (2) Include:

Shell (11),

Drag-line (18), and

Release button (4) is movably mounted on the shell (11),

It is characterized in that,

Sleeve (16) are fixed in the shell (11),

In the continuous passage (21) of the sleeve, air-brake coupling hose (17) is actively guided along the longitudinal direction, wherein described Air-brake coupling hose (17) has for arranging the first continuous passage (31) of the drag-line (18) and for arranging the inner shaft (9) Second continuous passage (32), wherein the air-brake coupling hose (17) is designed to make it in a first state relative to the set The position of cylinder (16) is fixed by the release button (4), and

After activating the release button (4), the air-brake coupling hose (17) in the second state can be with the drag-line (18) one Rise, along the sleeve (16) longitudinal direction and be displaced in a proximal direction relative to the sleeve (16) and the inner shaft (9), To retract the retractable spindle (8), wherein the retractable spindle (8) is connectable to the drag-line (18).

2. handle according to claim 1, which is characterized in that the handle (2) has spool (12), and the spool can revolve It is mounted on the shell (11) with turning and the drag-line (18) is fixed on said reel, and be displaced along proximal direction In the case where, the drag-line (18) with the air-brake coupling hose (17) can be wound on said reel.

3. handle according to any one of the preceding claims, which is characterized in that the sleeve (16) has continuous passage (21), the continuous passage (21) is ellipse on section, for arranging the air-brake coupling hose (17).

4. handle according to any one of the preceding claims, which is characterized in that by the release button (4) and described Between air-brake coupling hose (17) shape cooperation and/or frictional fit, the position of the air-brake coupling hose (17) in a first state by It is fixed.

5. handle according to claim 4, which is characterized in that the sleeve (16) tool in part (39) as described below There is recess portion, so that the air-brake coupling hose (17) is exposed in the region of the recess portion: at the part (39), in first state Under can be generated between the release button (4) and the air-brake coupling hose (17) shape cooperation.

6. handle according to any one of the preceding claims, which is characterized in that the air-brake coupling hose (17) is in its side table Face has slot (33), which extends isometricly continuously along the second channel (32).

7. handle according to any one of the preceding claims, which is characterized in that the material packet of the air-brake coupling hose (17) Containing teflon.

8. handle according to any one of the preceding claims, which is characterized in that the release button (4) has preferably The barrier element (47) of finger-like, the barrier element stop the rotation of the spool (12) and in a first state in the second shapes The spool (12) are allowed to rotate in state.

9. handle according to any one of the preceding claims, which is characterized in that the release button (4) includes capture member Part (44) is bonded in corresponding capture complementary elements (48) activating release button (4) the Shi Suoshu capture element, described Capture complementary elements (48) is arranged in or is fixed on the shell (11).

10. handle according to any one of the preceding claims, which is characterized in that the release button (4) is largely Ground around the sleeve (16) grasp, wherein along the channel (42) that the sleeve (16) longitudinally extends be arranged in it is described release by On button (4) and for placing the sleeve (16) with drag-line (18) and inner shaft (9).

11. a kind of conduit, the conduit has retractable spindle (8) and inner shaft (9) and according to any one of preceding claims The handle (2), wherein the inner shaft (9) is arranged in the retractable spindle (8).

12. conduit according to claim 11, which is characterized in that the drag-line (18) is fastened to the retractable spindle (8) On, and the inner shaft (9) is fastened on the shell (11) of the handle (2).

13. a kind of method for operating conduit according to claim 11 or 12, which is characterized in that activate the release Button (4)；And then, the air-brake coupling hose (17) and the drag-line (18) being arranged therein together, can be along the sleeves (16) longitudinal direction is simultaneously displaced relative to sleeve (16) and inner shaft (9) in a proximal direction.

14. according to the method for claim 13, which is characterized in that in order to make the air-brake coupling hose (17) relative to the set Cylinder (16) is displaced in a proximal direction, to the spool on the shell (11) for being rotatably installed in the handle (2) (12) it is rotated, to roll the drag-line (18) and/or the air-brake coupling hose (17).

Technical field

The present invention relates to a kind of handle for conduit, which has inner shaft and retractable spindle, wherein the handle has Shell and the release button being movably mounted on shell.

Background technique

Conduit is generally understood as the pipe fitting or hose for the different-diameter being made from a different material, can be with minimally invasive by it Mode is detected, emptied, filling, rinsing or other modes treatment hollow organ, such as bladder, stomach, intestines, blood vessel or heart.Conduit To be introduced into human or animal's body to be treated tubulose or hose-like part be known as axis, be disposed with catheter tip in its distal end End, arrives into the farthest duct element in the duct element in body to be treated.Therefore, the side within the scope of the application It should always be managed in the sense that respectively closer to catheter tip and closer to operator to instruction (for example, distally and proximally) Solution.

Be with active or passive electrode catheter in blood vessel it is known, be especially used for ambition region, and be introduced into Cardinal vein or artery, such as into femoral vein, and may be advanced to the difference in heart or coronary vasodilator therefrom.This A little conduits are used to show or simulate the region of electrical activity or removal with abnormal electrical activity of heart.After ablation A kind of situation is used for example as the treatment of arrhythmia cordis.In addition, for example being adjusted now by the nerve of renal nerve (renal plexus) using conduit Save the reduction to realize blood pressure.Other examples of conduit are the insertions for bracket and/or are used at catheter tip with sacculus Conduit, expansion when can be used for widening blood vessel or in position expandable stent to be treated.In order to discharge the device of such as bracket, Conduit usually has inner shaft and the retractable spindle around inner shaft.

Usually place is connected to for conduit control and is suitably used for fluid supply control the axis of this conduit at its proximal end Handle.For example, retractable spindle is contracted by using handle by means of drag-line.The problem of handle of known catheters usually has It is that, when drag-line retracts, it winds around the inner shaft of conduit.As a result cause the function of conduit impaired.

10 2,005 051 469 A1 of document DE discloses a kind of dress for introducing Self-expanded stent in body vessel It sets, which there is the grip part with feedthrough, sliding members and wire catheter to be fastened to by the feedthrough at its proximal end The grip part, and including rod piece, rod piece is connected to grip part by rotary joint.Sliding members is used to lead when hose from seal wire Center rest when pipe retracts.Locking press button is additionally provided, the relative motion between hose and sliding members is prevented.Once release Locking press button, by activating the rod piece, surround hose can in each actuation stroke on the path of the tooth pitch of rack gear quilt It retracts, the rack gear is also secured on the grip part.

198 15 119 C1 of document DE discloses a kind of for elastic probe, particularly the driving device of medical probe. Filiform bougie is placed in driving device by open front and is placed on rib.The rib has curved support surface, for changing The transverse direction of kind silk probe is fixed.Then, silk probe is drawn again by grip part of the driving device on nearside.It is filled in driving It sets and there also is provided wheel, the wheel in the driving device has the circular side tapered trenches being tapered towards the middle, The position (the side axle lever pin of wheel is assembled in the slot) of middle selection groove width and the slot in driving device, so that probe passes through wheel Trench wall be compressed against on rib, and therefore kept in the trench in a manner of frictional engagement.

Above-mentioned document does not provide the solution of the above problem.

Summary of the invention

Therefore, a purpose is to obtain a kind of handle for conduit, and drag-line is avoided to lead around the winding and improvement of inner shaft The operation of pipe.Another purpose is to obtain a kind of conduit with this handle and describe a kind of to operate the simple of this conduit Method, it avoids the above problem.

Above-mentioned mesh is realized by the handle of the feature with claim 1 and the conduit of the feature with claim 11 's.

Particularly, according to the present invention, hollow cylindrical sleeve is fastened in the shell of handle, and air-brake coupling hose is in longitudinal direction The continuous passage (chamber) of the sleeve is actively directed across on direction, wherein air-brake coupling hose has for arranging handle The first continuous passage (chamber) of drag-line and the second continuous passage (chamber) of the inner shaft for arranging conduit.According to the present invention, it brakes Hose is designed to make its position in a first state relative to the sleeve (and shell) of the handle to pass through the release Button is fixed, and is made, after activating the release button, air-brake coupling hose and the drag-line one in the second state Rise, can along the sleeve longitudinal direction and be displaced in a proximal direction relative to the sleeve and the inner shaft, with retract Retractable spindle, wherein retractable spindle may be coupled to the drag-line.In the first state for the initial state for constituting release button In, air-brake coupling hose and the drag-line being fixed therein are therefore immovable.The above-mentioned second state generation of air-brake coupling hose is pressed in release When button has been activated and air-brake coupling hose has thus been released.

Continuous passage in hose, axis or sleeve is also commonly referred to as (interior) chamber of hose, axis or sleeve.The chamber is continuous logical Road is inner cavity, is surrounded by hose, axis or sleeve.

When first and second continuous passages of air-brake coupling hose consider in sectional view, be generally adjacently disposed brake it is soft In pipe.It is therefore clear that in one exemplary embodiment, air-brake coupling hose, which has, deviates circular section.Thus it hinders Rotation of the air-brake coupling hose in sleeve.

Handle according to the present invention also has the advantage that, since drag-line and inner shaft are in the separated channel of air-brake coupling hose Arrangement in (chamber), it is therefore prevented that drag-line is wound around inner shaft.In addition, discharging the branch for example at the distal end of conduit (catheter tip) During frame, inner shaft is by air-brake coupling hose and sleeve steering.This stablizes inner shaft.Drag-line is preferably formed to bracing wire.Drag-line is fixedly It is arranged in the first passage of air-brake coupling hose and is therefore connected to air-brake coupling hose.

Sleeve preferably has a length (in the longitudinal size of sleeve), which is greater than the length of implantation material to be released Degree.This means that sleeve can stretch out except the distal end of handle.For example, implantation material can be Self-expanded stent.It is being suitable for length Up in the system of 200mm bracket, the total length (sleeve (about 100mm) except handle (about 150mm)+handle) of sleeve be can be Such as 250mm.It is achieved in the part of the improvement and holding in use of the guidance of drag-line and catheter shaft outside the patient's body The stability of conduit.

In one exemplary embodiment, handle has spool, which is fastened to shell and is rotatably mounted, And drag-line is fastened on the spool, and in the case where being proximally displaced, the drag-line (or the drawing with air-brake coupling hose Rope) it can be wound on the spool.By spool (corresponding opening in its shell from outside by handle can be approached and It is rotatable by a user), easily drag-line can be removed together with air-brake coupling hose from sleeve.Due to drag-line be fastened to conduit can On telescopic shaft, therefore retractable spindle can easily be shifted relative to inner shaft.Spool is preferably arranged in the far-end of handle, so as to It can easily operate.Drag-line (it runs up in handle proximate end side) and air-brake coupling hose preferably pass through arrangement in the housing Deflection rib deflected on direction of the proximal end of handle towards spool with low-frictional force to be rolled-up, therefore further change It has been apt to the guidance of air-brake coupling hose and drag-line in handle housing.

In another preferred exemplary embodiment, sleeve has for arranging the continuous of the elliptic cross-section of air-brake coupling hose Channel, wherein the major diameter of elliptic cross-section is upwardly extended in the side in the first and second channels of air-brake coupling hose being adjacently positioned. The oval-shaped passageway of sleeve extraly hinders rotation of the air-brake coupling hose in sleeve, and air-brake coupling hose is not rotational symmetry on section 's.It can also realize the transmitting of hose system of the torque from handle to conduit.

It is further advantageous that the position of air-brake coupling hose in a first state passes through the shape between release button and air-brake coupling hose Cooperation or frictional fit are fixed.For this purpose, release button is for example with U-shaped part, it is therefore preferred to have be arranged in the side of U-shaped part At least one dentation protruding portion and/or at least one clamped edge on face.The internal diameter of U-shaped part is preferably less than in Xiang Tongfang The diameter of upward air-brake coupling hose, it is so that when air-brake coupling hose is arranged in slot, air-brake coupling hose is fixed in the housing or sleeve In power by friction and/or shape mating reaction on air-brake coupling hose.

If sleeve can form the area where shape cooperation between release button and air-brake coupling hose in a first state There is recess portion (being exposed to air-brake coupling hose in the region of recess portion in this way) in domain, pressed by release in a first state Particularly effective friction and/or shape cooperation may be implemented in button.Alternatively, sleeve can break in this region.Therefore it discharges Button acts directly on air-brake coupling hose.

In a further exemplary embodiment, when arranged in the side surface in air-brake coupling hose it is continuous and with second channel it is isometric When slot, air-brake coupling hose is improved from the separation (removing) of conduit inner shaft.Therefore, slot is relative to air-brake coupling hose or relative to inner shaft It radially extends.Slot preferably extends along the whole length of air-brake coupling hose.

In improvement project of the invention, the material of air-brake coupling hose include teflon and/or another fluoropolymer and/or Thermoplastic compound.Teflon especially has good sliding capability so that air-brake coupling hose in sleeve and around deflection rib or Retracting for deflection spool can accurately carry out under the action of small power and therefore.

In another preferred exemplary embodiment, providing, release button has preferred finger-like barrier element, It prevents the rotation (drag-line is wound on spool in the case where retraction) of spool and in the second state in a first state Allow the rotation of spool.Barrier element is for example cooperatively connected by shape to spool in a first state, and this shape cooperates It is no longer present in the second state.For example, being engaged at the tip that the end farthest apart from release button of barrier element is formed In gear, which is arranged on spool and close to housing wall.Thus prevent the movement of gear and spool (because of wheel rigidity Ground is connected to spool).In the second state, engagement of the barrier element in gear is cancelled by actuating release button, and Gear and spool can rotate freely.Therefore, handle is protected in additional mode, to prevent the unexpected retraction of drag-line and thus lead The retraction of the retractable spindle of cause.

In the another exemplary embodiment of handle according to the present invention, release button has capture element, releases in actuating When putting button, which is bonded in corresponding capture complementary elements, which is arranged on shell or tight It is affixed to shell.Capture element and capture complementary elements form shape cooperation.Capture element forms shape with capture complementary elements and matches It closes.Capture element for example formed as finger tab, be secured to release button, and it has hook in front end.Capture pairing Element is rib, is mounted on shell, is preferably formed as one with shell, and capture complementary elements in the second state by Clasp joint closes.Release button is maintained at the second state by capture element and capture complementary elements.

If release button mostly surrounds sleeve grasping, this is advantageous the assembling of conduit and handle, In, it is arranged in along the channel of sleeve longitudinally extended in release button and for placing the sleeve with drag-line and inner shaft. It since sleeve can be placed in release button rather than is inserted into release button, reduces built-up time significantly.

Also solves the above problem by conduit with retractable spindle and inner shaft and above-mentioned handle, wherein inner shaft cloth It sets in retractable spindle.Furthermore it is possible to arrange outer shaft on conduit.Conduit according to the present invention has relevant to handle above-mentioned Advantage.

Especially for providing above-mentioned advantage for conduit, wherein (preferably self expandable) implantation material is arranged in inner shaft Above and by the relative motion of retractable spindle it is released.This implantation material can be the heart valve with self expandable main structure Film prosthese, no lead pacemaker (no lead pacemaker), self expandable closed system, especially Self-expanded stent.

In one exemplary embodiment, drag-line is fastened in retractable spindle, and inner shaft is fastened on the shell of handle. Therefore, retractable spindle can be shifted in the proximal direction by drag-line.It, can also be in distal direction when drag-line is suitably rigid Upper displacement.Drag-line is preferably secured in retractable spindle by corresponding sleeve, wherein (that is, activating in initial state Before release button), the location arrangements of fastener are in the sleeve of handle, more specifically preferably in the far-end of sleeve.

If conduit has outer shaft, it is preferably fastened to the sleeve of handle, is more specifically fastened to its distal end, such as Sleeve for example is connected to by welding in conjunction in a manner of by entirety.

Additional outer shaft is also commonly referred to as stabilizer axis, and the outer shaft surrounds retractable spindle and cloth over much of its length It sets in inner shaft wherein.The pluggability and stablize whole system that outer shaft is used to be improved in patient, especially in implantation material Deenergized period.

For operating above-mentioned conduit, the simple and economical and reliable method for example for discharging Self-expanded stent include with Lower step: actuating release button, then air-brake coupling hose, can be along the longitudinal direction side of the sleeve together with the drag-line being arranged therein It is displaced in a proximal direction to and relative to the sleeve and the inner shaft.If handle has the spool for being connected to drag-line, Then air-brake coupling hose and the rotation of the spool on the shell for being rotatably installed in handle can in the proximal direction relative to Handle jacket displacement, to roll drag-line and/or air-brake coupling hose.Therefore, drag-line is contracted by the rotation at spool.For The spool of this purpose has groove for example on the outer edge for the rotating wheel for being rigidly connected to the spool, which is conducive to roll up The rotation of axis.Alternatively or additionally, spool is made of flexible material (such as flexible plastic), it ensures that spool and drag-line Between bigger friction.

Detailed description of the invention

By the following description to exemplary embodiment of the present and attached drawing is referred to, it is other objects of the present invention, feature, excellent Point and possible application will be apparent.Here, all features for describing and/or showing in attached drawing are individually or with any combination Form forms subject of the present invention, and the reference of the summary and claim independently of the feature in each claim Relationship.

Attached drawing is schematically shown:

Fig. 1 has the side view of the conduit of handle,

Fig. 2 according to the sectional view of the axis of the conduit of Fig. 1,

The handle that Fig. 3 shell according to the present invention is opened,

Fig. 4 opens the enlarged view of part according to the shell of the handle of Fig. 3,

The side perspective view of the release button of the air-brake coupling hose of the handle of the with good grounds Fig. 3 of Fig. 5 band,

Fig. 6 according to the side view of the arrangement of Fig. 5, and

Fig. 7 is according to the sectional view of the sleeve of the drag-line with air-brake coupling hose, inner shaft and handle of Fig. 3.

Specific embodiment

Fig. 1 shows the example of conduit 1, the handle 2 with nearside arrangement.Handle 2 has release button 4.By means of It can position with the handle 2 of one-handed performance and release is arranged at catheter tip 5 (that is, at outermost far-end of conduit) Object, such as Self-expanded stent.The object is for example released by three axis axle systems, three axis axle system quilts in Fig. 2 It shows.The object is released particularly by the actuating of release button 4, and this prevent unexpected releases.

Three axis shafts of conduit 1 are shown in Fig. 2 with section comprising outer shaft 7, retractable spindle 8 and inner shaft 9.Other axis Design is also to be contemplated that.Inner shaft 9 is arranged in retractable spindle 8, and retractable spindle 8 is arranged in outer shaft 7.In order to discharge inner shaft Therefore 9 simultaneously discharge object (not shown) to be introduced, retractable spindle 8 is shifted to nearside.

Handle 2 according to the present invention is illustrated in detail in Fig. 3 to 7.The handle from Fig. 1 and 2 is represented according to this The embodiment of the conduit system of invention.Shell 11 includes two half-unit, the two half portions can be releasably coupled together, In, in figures 3 and 4 only it can be seen that a case half, wherein these case halfs can for example be connected through a screw thread solid each other Surely it connects.Alternatively, two half-unit can also be connected to each other by being clamped and connected.

Spool 12 for rolling drag-line 18 (for example, being embodied as bracing wire) is arranged in the proximal end of shell 11.Spool 12 with The mode being rotatably mounted is fixed on shell and is rigidly connected on wheel 13, and user can rotate by wheel 13 Spool 12.For this purpose, wheel 13 has suitable groove and arrow on their outer circumference, indicate that correct direction of rotation is drawn to roll Rope 18.The spool side end of drag-line 18 is fixedly connected to spool 12.Gear 14 is also fixedly connected to spool 12 and arranges Between the wheel 13 rotated for user and shell 11.Gear 14 is formed in this way, that is, it can only be in one direction Rotation.

After wheel 13 rotates several circles, not only drag-line 18 is wrapped on spool 12, but also drag-line 18 and air-brake coupling hose 17 Combination be also wrapped on spool 12.This is accompanied by increaseing accordingly by the received quantity of material of spool 12.Here, spool 12 Advantageously conical.In the presence of a variety of possibilities of the specific embodiment for spool, these embodiments are in EP 2 111 It is described in 826, the content of the document is included in herein herein.

Lateral struts 15 are extraly arranged in the inside of shell 11 and sleeve 16 are fixed to shell 11.As shown in figure 3, set Length a is reached except the proximal end of the shell 11 of 16 stretching handle 2 of cylinder.It is thus achieved that the additional of catheter shaft is drawn when drag-line 18 retracts It leads.

Sleeve 16 can be seen with sectional view in Fig. 7.Sleeve 16 has oval continuous passage (chamber) 21, for receiving Air-brake coupling hose 17.Sleeve 16 is circle in an outside in sectional view, and is disposed on the opposite sides for bearing against shell 11 On straight contact surface 16a.

Air-brake coupling hose 17 have for arrange the lesser continuous first passage 31 of drag-line 18 and be provided with slot 33 compared with Big second channel 32, for receiving the inner shaft 9 being arranged in second channel 32.Since these channels 31,32 are in air-brake coupling hose It is adjacently positioned in 17, therefore provides non-rotationally-symmetric shape for air-brake coupling hose 17.

The slotted channels 32 of air-brake coupling hose 17 allow the simple dismounting of inner shaft 9.Inner shaft 9 is by air-brake coupling hose 17 along entire set Cylinder 16 is guided, prevent it from deviating under stress.Only in the proximal end of inner shaft 9, inner shaft 9 is prominent from sleeve 16.Close At end, inner shaft 9 has fluid connector 9a, for rinsing the continuous passage of inner shaft (inner cavity).The continuous passage of inner shaft is for connecing Seal wire is received, which is guided (not shown in detail) from inner shaft in nearside in a similar manner.In this region, when drag-line 18 is with system When dynamic hose 17 retracts, air-brake coupling hose 17 automatically removes (removing) from inner shaft 9, and this can be simple real due to slot 33 It is existing.Air-brake coupling hose 17 is achieved in that from the automatic removal of inner shaft that is, air-brake coupling hose 17 is guided around deflection rib 19, partially Turn the proximal end that rib 19 is disposed in shell 11.

The non-rotational symmetric shape of air-brake coupling hose 17 is combined with the oval-shaped passageway 21 of sleeve 16 means air-brake coupling hose 17 It cannot be rotated in sleeve 16.For this reason and due to bracing wire 18 and inner shaft 9 in separated channel 31,32 individually drawing It leads, it is therefore prevented that bracing wire 18 is wound around inner shaft 9.

Within shell 11, air-brake coupling hose 17 mainly guides (see Fig. 7) in oval-shaped passageway 21 by sleeve 16.In order to make Friction minimizes, and air-brake coupling hose 17 is made of low-friction material such as teflon.U-shaped part 39 of the sleeve 16 in release button 4 Region in have and recess portion or be interrupted there, it is as shown in Figure 4.Therefore, air-brake coupling hose 17 exposes in this region, makes The direct cooperation for obtaining air-brake coupling hose 17 and release button 4 is possibly realized.

In fig. 5 and fig., release button 4 is illustrated in greater detail only in conjunction with air-brake coupling hose 17.Sleeve 16 has been omitted. Release button 4 substantially has the L shape of rotation and is fixed on shell 11, it is surrounded inwardly projecting from shell 11 Pin 35 pivot.In upside, in the long side of " L ", release button 4 has recess 36, and it is recessed at this that user can place finger It presses (direction of the arrow 37 in release button 4) will pass through in falling into and activates the release button 4.In sleeve 16 or system In the region of dynamic hose 17, release button 4 forms U-shaped part, engages around sleeve 16 or air-brake coupling hose 17.Two gripper edges Edge 41 is formed on each medial surface 39a of U-shaped part 39, and forms shape cooperation with air-brake coupling hose 17 in a first state With frictional fit and relative to the fixed air-brake coupling hose 17 of shell 11, therefore air-brake coupling hose is immovable.

It there also is provided lateral recess portion 42 in release button 4, air-brake coupling hose 17 or sleeve 16 can be placed in lateral recess portion 42 In.Release button 4 is also below U-shaped part 39 with the capture element and finger-like barrier element 47 of 44 form of hook.

In first state (initial state, release button 4 are in upper position), clamped edge 41 is in 4 He of release button Frictional fit and shape cooperation are formed between air-brake coupling hose 17.This generates braking action and consolidates relative to shell 11 and sleeve 16 Determine air-brake coupling hose.Therefore, the drag-line 18 being fixedly placed in air-brake coupling hose 17 is also fixed, and the retraction of drag-line 18 is It is impossible.In a first state, finger-like barrier element 47 is also bonded to gear 14 by means of its front end so that gear 14 and Therefore spool 12 and wheel 13 cannot rotate.

If making release button 4 enter lower position by pressing along the direction of arrow 37, " brake " is discharged simultaneously And cancel the frictional fit between clamped edge 41 and air-brake coupling hose 17 and shape cooperation.Release button 4 is now arranged in the second shape State, wherein air-brake coupling hose 17 can shift in sleeve 16.In such state, the object (such as bracket) at catheter tip 5 can To be released, because drag-line 18 is contracted by the rotation of wheel 13.At the end of the actuating movement of release button 4, hook 44 is connect It closes behind capture complementary elements (rib 48 on shell 11).Therefore, release button 4 is fixed on the second state, and continuously Ensure freely the shifting in sleeve 16 of air-brake coupling hose 17.When activating release button 4, barrier element 47 is also moved, such as Joint bending, so that barrier element 47 is no longer engaged with gear 14 and therefore discharged.It is fixedly connected to gear as a result, 14 element (spool 12 and wheel 13) can rotate, and the drag-line for being connected to spool 12 18 is contracted.

Drag-line 18 and air-brake coupling hose 17 is axially displaced in order to prevent, and cylindrical cover can be pressed to air-brake coupling hose 17, can Selection of land is directly adjacent to the cooperation of the shape between air-brake coupling hose and " brake " and frictional fit point.In the optional implementation of the invention In example, therefore increase the static friction between air-brake coupling hose 17 and drag-line 18.

Since drag-line 18 is connected to the retractable spindle 8 of conduit in the remote area of sleeve 16, retractable spindle 8 is also passed through It is contracted by drag-line 18 by the rotation of wheel 13.Inner shaft 9 remains fixed in shell 11, and outer shaft 7 is fixed on sleeve 16 Distal region in.Since sleeve 16 is fixed also relative to shell 11, so outer shaft 7 will not move when drag-line 18 retracts. All three axis are at least directed into the distal region of sleeve 16, but only inner shaft 9 passes through sleeve 16 over the whole length.

With handle 2 of the present invention conduit of the present invention 1 permission reliably retracted by means of drag-line 18 retractable spindle 8 and Avoid drag-line 18 around the winding of inner shaft 9.Handle 2 extraly allows torque to be transmitted to axis 7 to 9 from handle 2.

Reference signs list

1 conduit

2 handles

4 release buttons

5 catheter tips

7 outer shafts

8 retractable spindles

9 inner shafts

9a retainer

11 shells

12 spools

13 wheels

14 gears

15 pillars

16 sleeves

The contact surface of 16a sleeve 16

17 air-brake coupling hoses

18 drag-lines

19 deflection ribs

The continuous passage (chamber) of 21 sleeves 16

The first passage of 31 bracing wires 18

The second channel of 32 inner shafts 9

33 slots

35 pins

36 recess

37 arrows

39 U-shaped parts

The medial surface of 39a U-shaped

A sleeve 16 is located at the length except the shell 11 of handle 2

41 clamped edges

42 recess portions

44 hooks

47 barrier elements

48 ribs