JP6470483B2 - Controller and stent delivery system - Google Patents

Description

  The present invention relates to a controller that operates a stent delivery catheter, and a stent delivery system that is a system including a stent delivery catheter and a controller.

  In the treatment of lesions such as stenosis of blood vessels, it is known to place a stent in the lesion using a stent delivery catheter. Stents are generally classified into two types: those expanded by a balloon (balloon expandable type) and those expanded by a self-expanding force derived from material properties (self-expandable type).

  For example, in a stent delivery catheter for a self-expanding stent, the outer tube that stores the stent in a reduced diameter state by pressing the stent from the surface, and the inner tube that controls the placement position by engaging with the stent are relatively The stent is released from the outer tube due to the detachment of the outer tube that has pressed the stent surface. Therefore, when the stent is released, controlling the relative movement between the outer tube and the inner tube with high accuracy realizes proper stent placement in the target lesion and improves the treatment results.

  Therefore, in recent years, it is common to attach a controller to the proximal end of the stent delivery catheter in order to improve the relative movement accuracy. This controller includes parts such as a gear, a gear, or a ratchet, and uses them to control relative movement between the outer tube and the inner tube with high accuracy.

  For example, in Patent Document 1, in order to improve the placement accuracy of a self-expanding stent, a controller having a thumb wheel operated with one hand is attached to a stent delivery catheter. This controller includes a generally cylindrical housing, and is assumed to be used in a state where it is lifted by hand.

Special table 2007-504897

  By the way, in order to further improve the placement accuracy of the self-expandable stent, the stent delivery catheter (and eventually the time until the stent is completely released from the catheter after the distal end of the stent delivery catheter is delivered to the lesion) It is important that the stent delivery system is stably fixed at a fixed point outside the patient's body. This is because the placement accuracy of the stent may be lowered due to the displacement of the stent delivery catheter.

  However, in the stent delivery system described in Patent Document 1, the controller is used by being lifted by hand. Therefore, this stent delivery catheter is not fixed to a fixed point outside the body, and the placement accuracy of the stent is lowered.

  The present invention has been made to solve the above problems. The purpose of the present invention is to provide a controller or the like that can be operated in a state where the stent delivery catheter is stably fixed to a fixed point outside the body in the case of a procedure.

  In the controller that holds and operates the stent delivery catheter, a release operation tool that performs the stent release operation from the stent delivery catheter, and in the case of a procedure, a back surface that is directed downward in the direction of gravity and that is a supported surface, and an opposite surface of the back surface And a housing having a front surface. And this housing has a rear part extending from the discharge operation tool and a front part extending from the discharge operation tool on the side different from the rear part and in a different direction, and when the front of the housing is viewed in plan view, Three points of the tip of the rear part, the tip of the front part, and the discharge operation tool are arranged in a triangle.

  Further, it is desirable that the rear portion of the housing includes an arcuate end that extends from the distal end side of the housing toward the discharge operation tool side.

  In addition, it is desirable that this rear portion has arcuate ends disposed on one side and the other side in the width direction of the housing.

  Further, it is desirable that the discharge operation tool is disposed on one side in the width direction of the housing so as to be exposed from the housing.

  Further, it is desirable that the rear portion includes an inclined surface that descends from one side in the width direction of the housing to the other side in front of itself.

  In addition, it is desirable that a recess for placing the thumb is formed on the other side in the width direction of the housing.

  Further, the rear surface of the housing is preferably a flat surface.

  A stent delivery catheter system including the above controller and a stent delivery catheter attached to the controller can also be said to be the present invention.

  According to the controller of the present invention, in the case of a procedure, the stent delivery catheter can be operated while being stably fixed to a fixed point outside the body.

FIG. 2 is a front view of a stent delivery system. FIG. 3 is a rear view of the stent delivery system. FIG. 3 is a perspective view of a stent delivery system. FIG. 3 is an exploded perspective view of a stent delivery system. FIG. 5 is a front view showing a hand holding a controller in the stent delivery system. FIG. 6 is a rear view showing a hand holding a controller in the stent delivery system. FIG. 3 is a plan view showing a palm. FIG. 3 is an exploded perspective view of a controller. FIG. 3 is a perspective view of a controller. FIG. 3 is a perspective view of a controller. FIG. 3 is a front view of the controller. FIG. 4 is a rear view of the controller. Fig. 2 is a plan view of the controller (a plan view seen from the front side; a top view). These are the top views of a controller (a top view looked down from the back side; bottom view). Fig. 3 is a plan view of the controller (a plan view looking down from the rotating wheel side; a right side view). Fig. 3 is a plan view of the controller (a plan view looking down from the finger rest side; left side view). It is a left side view.

[Embodiment]
The following describes one embodiment with reference to the drawings. For convenience, hatching, member codes, and the like may be omitted, but in such a case, other drawings are referred to.

  1 to 6 are various drawings showing a stent delivery catheter 40 as an example of a catheter and a controller CR attached to the stent delivery catheter 40 (note that the controller CR and the stent delivery attached to the controller CR). A system including the catheter 40 is referred to as a stent delivery system SM). FIG. 7 is a view for explaining the palm of the operator, and FIGS. 8 to 16 are various views showing only the controller CR.

  In the following, in the stent delivery catheter 40, the side on which the stent (not shown) is arranged is referred to as the distal side, and the opposite side of the distal side is referred to as the proximal side. Moreover, when clearly showing the side in each member, it may be called a proximal side and a distal side. In each member, the proximal end is the proximal end, the vicinity of the proximal end is the proximal end, the distal end is the distal end, and the vicinity of the distal end is the distal end. And

  First, the stent delivery catheter 40 will be described. The stent delivery catheter 40 is a delivery catheter 40 to which a stent is attached (however, the delivery catheter 40 may be referred to as the stent delivery catheter 40).

  The stent delivery catheter 40 includes an outer tube 41 and an inner tube 42 that is inserted into the lumen of the outer tube 41. Further, the tubular stent is sandwiched between the inner wall of the outer tube 41 and the outer wall of the inner tube 42 in a reduced diameter state.

  Then, due to the relative movement of the outer tube 41 and the inner tube 42, the inner wall surface of the outer tube 41 is displaced from the stent, and the outer wall of the stent is not restrained by the inner wall surface of the outer tube 41. And released from the stent delivery catheter 40. The controller CR controls this relative movement.

  For this relative movement, the controller CR fixes the inner tube 42 while moving the outer tube 41 relative to the fixed inner tube 42.

  Specifically, as shown in FIGS. 3 and 4, a hub 43 attached to the proximal end portion of the inner tube 42 is fixed to the housing 10 of the controller CR via a clip 44. On the other hand, as shown in FIG. 4, the manifold 45 attached to the proximal end portion of the outer tube 41 is fixed to the slider 31 that moves relative to the housing 10. That is, the outer tube 41 moves with respect to the inner tube 42 by the movement of the slider 31 with respect to the housing 10.

  The mechanism for moving the slider 31 relative to the housing 10 is not particularly limited. For example, as shown in FIG. 4, the slider 31 moves on a linear rail 32 formed inside the housing 10. A moving mechanism can be mentioned.

  Such a method of moving the slider 31 (that is, in the case of a procedure) is, for example, by pulling the pull 46 attached to the outer surface of the outer tube 41 or rotating the switch gear 33 that meshes with the rack gear 31R formed on the slider 31. The rotation is performed by rotation of the rotating wheel [release operation tool] 35. Note that the rotating wheel 35 has a rotating shaft (not shown), and the rotating shaft fits into a bearing (not shown) on the inner surface of the wheel cover 12W described later. That makes it possible to rotate}.

  When the rotating wheel 35 is rotated by the procedure, the back surface 16 of the housing 10 in the controller CR is placed and supported on the patient's body or on a bed, for example (ie, the back surface 16 of the housing 10 is lowered in the direction of gravity. Oriented to become a supported surface). The surgeon has a curved (banana-shaped) controller CR as shown in FIGS. 1 and 2, for example.

  The controller CR will be described in detail with reference to FIGS. 8 is an exploded perspective view, and FIGS. 9 and 10 are perspective views. 11 to 16 are six views showing the controller CR, FIG. 11 is a front view, FIG. 12 is a rear view, FIG. 13 is a plan view, FIG. 14 is a bottom view, FIG. 15 is a right side view, FIG. Is a left side view.

  A direction from the front AS side AS of the housing 10 to the rear BS side BS or the rear BS to the front AS in the controller CR is defined as a short direction SD.

  Then, on one side that is divided by the short side direction SD passing through the rotating wheel 35, the side facing the clip 44 (proximal end of the inner tube 42) from the rotating wheel 35 is defined as a rear side RS, and the rear side RS is oriented. A part of the housing 10 that extends is defined as a rear portion RP. Further, a side opposite to the rear side RS is a front side FS, and a part of the housing 10 extending toward the front side FS is a front part FP (details of the front part FP and the rear part RP will be described later). .

  Further, the direction from the front side FS to the rear side RS or the rear side RS to the front side FS is defined as the longitudinal direction LD {that is, the longitudinal direction LD is a direction intersecting (orthogonal, etc.) with the short direction SD} .

  Then, the side on which the rotating wheel 35 protrudes from the controller CR and exposed, which is one side divided by the longitudinal direction LD, is the rotating wheel side WS, and the opposite side to the rotating wheel side WS is the finger contact side TS. And Further, the direction from the rotating wheel side WS to the finger rest side TS or from the finger rest side TS to the rotating wheel side WS is defined as a width direction WD {ie, the width direction WD intersects the longitudinal direction LD and the lateral direction SD ( Direction perpendicular)}.

  As shown in FIGS. 5 and 6, when the operator has a controller CR, the housing 10 of the front AS in the controller CR is covered with the palm of the hand (for example, the right hand), and the index finger, middle finger, ring finger, and little finger are Towards the rotating wheel side WS. Further, the joints of these four fingers are bent, and in particular, the index finger is placed so as to be related to the peripheral edge of the disk-shaped rotating wheel 35 exposed near the center of the longitudinal direction LD in the controller CR. On the other hand, the belly side of the thumb is placed so as to press the finger contact side TS in the housing 10 of the controller CR.

  In such a palm, as shown in FIG. 7, when the thumb ball 51 and the little finger ball 52 approach each other, four fingers and both fingers except the thumb are directed from the base of the index finger toward the root 53. A curved space 55 surrounded by the spheres 51 and 52 is generated. The housing 10 of the controller CR is designed so as to easily match the curved space 55.

  The housing 10 includes two members, and the front side AS is referred to as a front housing 11 and the back side BS is referred to as a back housing 15. It should be noted that an engagement claw (not shown) formed on the inner surface of the front housing 11 and an engagement receiver 15B (see FIG. 7) formed on the inner surface of the rear housing 15 are engaged with each other, thereby The housing 15 is connected with the surfaces extending in the longitudinal direction LD facing each other, but the mechanism for the connection is not limited to the engagement claw and the engagement receiver 15B (note that the front housing) 11 and the rear housing 15, the surfaces facing each other may be referred to as inner surfaces, and the opposite surface of the inner surface may be referred to as a surface).

  The front housing 11 is a member that becomes a front surface (also referred to as a front base surface) 12 of the housing 10, and includes a wheel cover 12W, a front front piece 12F, and a front rear piece 12R.

  The wheel cover 12 </ b> W covers a part of the rotating wheel 35. The front front piece 12F is a piece extending from the wheel cover 12W to the front side FS, and the front rear piece 12R is a piece extending from the wheel cover 12W to the rear side RS. The front front piece 12F, the wheel cover 12W, and the front rear piece 12R are connected in this order (however, this connection method is not particularly limited).

  Further, the wheel cover 12W, the front front piece 12F, and the front rear piece 12R include side surfaces 13 (13Wts, 13Wws, 13Fts, 13Ffs, 13Fws, 13Rts, 13Rrs, and 13Rws) that hang down toward the inner surface (this side surface). 13 and the lower case letters given to the side surface 17 described later mean the rotating wheel side WS, the finger rest side TS, the front side FS, or the rear side RS).

  Further, the side surface 13Wws of the wheel cover 12W has a portion thereof missing in order to expose the rotating wheel 35 (this missing portion is referred to as a rotating wheel opening 21). More specifically, when the rotation wheel 35 is covered with the wheel cover 12 </ b> W by fitting the rotation shaft of the rotation wheel 35 to the bearing, the rotation wheel opening 21 is at least of the disk-shaped rotation wheel 35. The periphery is exposed to the outside.

  In addition, the shape of the opening 21 for rotation wheels is not specifically limited, What is necessary is just a shape which an operator can operate easily. Further, the front shape of the wheel cover 12W is not limited to a partially cut circular shape as shown in FIG. 11, and may be an elliptical shape, a rectangular shape, a polygonal shape, or an amoeba shape.

  The portion of the front housing 11 excluding the side surface 13 as described above is sometimes referred to as a front base surface 12 (12F, 12W, 12R). The front base surface 12 has a longitudinal direction LD and a width direction WD. In a plan view of the surface defined by

  The back housing 15 is a member that becomes the back surface (also referred to as a back base surface) 16 of the housing 10, and is formed by connecting a single piece facing the front front piece 12F, the wheel cover 12W, and the front rear piece 12R (note that There is no particular limitation on the way of connection. The portion facing the front front piece 12F is the rear front piece 16F, the portion facing the wheel cover 12W is the rear intermediate piece 16W, and the portion facing the front rear piece 12R is the rear rear piece 16R. Called).

  Further, the rear front piece 16F, the rear intermediate piece 16W, and the rear rear piece 16R include side surfaces 17 (17Fts · 17Ffs, 17Wts, 17Rts) that hang down toward the inner surface side. And the part except the side surface 17 in the back housing 15 may be called the back surface 16 (16F, 16W, 16R), and this back surface 16 is curved like the front surface 12. In addition, most of the surface is a flat surface (in addition, one of the non-planar portions is a recess 28 to which a thumb or the like is attached, and the recess 28 serving as a finger pad extends to the side surface 17). .

  Here, the housing 10 in which the front housing 11 and the rear housing 15 are connected will be described in detail. In the housing 10, the front front piece 12F and the back front piece 16F face each other, the wheel cover 12W and the back middle piece 16W face each other, and the front back piece 12R and the back back piece 16R face each other. included. Therefore, the part formed by the front pieces 12F and 16F is the front part FP, the part formed by the rear pieces 12R and 16R is the rear part RP, and the part sandwiched between the front part FP and the rear part RP (the wheel cover 12W and the rear face). A portion formed by the intermediate piece 16W) is referred to as an intermediate portion WP.

  The front part FP, the intermediate part WP, and the rear part RP are arranged in a line in this order and are connected. Then, with reference to the intermediate portion WP that covers the rotation wheel 35 (that is, the rotation wheel 35), the rear portion RP extends toward the rear side RS, and the front portion FP faces the front side FS in another direction ( By extending in the direction different from the extending direction of the rear part RP, the housing 10 is curved. Specifically, the front part FP extends linearly to the front side FS, and the rear part RP extends to bend to the rear side RS (in short, the rear part RP is on the other side and in a different direction with respect to the front part FP). That is, while extending to the rear side RS, it also extends to the finger contact side TS).

  With such a housing 10, in the case of a procedure, the surface of the rear housing 15 is directed downward in the direction of gravity, and when the surface is placed on the patient's body or on a bed or the like, the front portion FP A tip (for example, the side surface 13Ffs / 17Ffs) that is the extended end, a tip (for example, the side surface 13Rrs) that is the extended end of the rear portion RP, and a rotating wheel 35 (for example, the rotating wheel 35 of the disk). The figure formed by the imaginary line (see the alternate long and short dash line) connecting the rotation axis) is a plan view from the front surface 12 or the rear surface 16 of the housing 10 (the surface defined by the longitudinal direction LD and the width direction WD is looked down from directly above. It becomes a triangle when viewed in terms of how to view.

  That is, the housing 10 of the controller CR has a rear part RP extending from the rotating wheel 35 and a front part FP extending from the rotating wheel 35 in the opposite direction to the rear part RP. Three points of the front end of the rear part RP, the front end of the front part FP, and the rotating wheel 35 form a triangular arrangement. When the triangular arrangement is adopted, the continuous front part FP, the intermediate part WP that covers the rotating wheel 35, and the rear part RP are curved and easily conform to the curved space 55 generated in the surgeon's hand. Become. Therefore, the controller CR is easily grasped with one hand of the operator.

  Also, when the controller CR is pressed down in the direction of gravity by the operator, the controller CR (specifically, the back surface 16 as the supported surface) and the support surface of the controller CR (on the patient's body or bed, etc.) Is not a linear contact but a curved contact. Therefore, the controller CR is stably supported on the support surface, and for example, it is possible to prevent the controller CR from moving against the operator's will.

  By the way, since the front end of the front part FP, the front end of the rear part RP, and the rotating wheel 35 in the housing 10 are arranged in a triangular shape, the rear part RP is, for example, from the front end side to the intermediate part WP side (that is, the rotating wheel 35 side). An arcuate end C heading toward). The arcuate end C is, for example, a portion that looks like a bow when the front surface 12 or the rear surface 16 is viewed in plan view, and is an end on the surface of the rear portion RP (front rear piece 12R / back rear piece 16R). It is a curved part.

  And, since this arcuate end C is included in at least one rear part RP, it tends to be triangularly arranged or easily matches the curved space 55 of the hand. For example, the front part, the middle part, Compared to a controller in which the rear part is linearly connected, the controller CR is easily gripped and stably supported.

  Further, as shown in FIG. 5, when the arcuate end C is disposed on one side (for example, the rotating wheel side WS) and the other side (for example, the finger rest side TS) in the width direction WD, Easy to touch. Specifically, the arcuate ends C12R and C13Rws of the rotating wheel side WS are easily touched by four fingers and the little finger ball 52 other than the thumb that form the curved space 55 of the palm, and the arcuate ends C12R and C12R of the finger rest side TS C13Rts and C17Rts are easily touched by the thumb ball 51 that forms the curved space 55 (particularly, the arcuate ends C13Rws, C13Rts, and C17Rts are the rotation wheel side WS or finger when the front surface 12 or the back surface 16 is viewed in plan view. (It becomes the outermost arcuate end C at the contact side TS).

  Therefore, the controller CR including such an arcuate end C (C12R, C13Rws, C13Rts, C17Rts) is more easily gripped and is stably supported (note that the member number after C at the arcuate end C). Means rear pieces 12R and 16R, or side surfaces 13 and 17 included therein).

  By the way, since the index finger is easy to move delicately compared to the operation with other fingers, when the stent delivery catheter 40 is operated by the rotation of the rotating wheel 35 by the index finger, the placement accuracy of the stent is likely to increase. Therefore, the controller CR exposes a part of the rotating wheel 35 through the rotating wheel opening 21 of the housing 10 on one side in the width direction WD across the front surface 12 of the housing 10, that is, on the rotating wheel WS side.

  With this arrangement, when the controller CR is held so as to match the curved space 55 of the palm, when the index finger is engaged with the periphery of the rotating wheel 35, the thumb ball 51 serving as a fulcrum of the hand is formed. , Located on the finger contact side TS which is the other side in the width direction WD.

  Then, with the thumb ball 51 as a fulcrum, the direction of gripping the palm that easily develops the index finger force coincides with the direction of movement of the index finger (tangential direction of the rotation wheel 35), and the rotation wheel 35 is efficiently rotated. {If the rotation axis of the rotating wheel 35 faces the direction from the front surface 12 to the rear surface 16 (short direction SD), the movement of the first and second joints of the index finger of the hand covering the front surface 12 The rotating wheel 35 rotates efficiently}.

  On the other hand, due to the friction between the rotating shaft and the bearing of the rotating wheel 35 and the movement of the middle finger, ring finger, little finger in the direction of the thumb ball 51 in conjunction with the movement of the index finger, as shown in FIG. A clockwise moment M1 about the rotation axis is generated. If the moment M1 generated in this way is excessive, the tip side of the front part FP of the controller CR is vibrated, and the vibration propagates to the stent delivery catheter 40, which may reduce the accuracy of stent placement.

  Therefore, as shown in FIGS. 13 and 14, the rear surface RP (specifically, the front rear piece 12R) is inclined to the front surface 12 from the rotating wheel 35 side to the finger rest side TS in the width direction WD. , The thumb ball 51 is likely to be along the inclined surface 22.

  When the inclined surface 22 is pressed by the thumb ball 51 in this way, as shown in FIG. 5, a counter-moment M2 that is reverse to the moment M1 is generated. Therefore, the moments M1 and M2 cancel each other, and the vibration on the front end side of the front portion FP of the controller CR is suppressed. In addition, the thumb ball 51 can easily press the back surface 16 on the patient's body or a bed through the inclined surface 22, and the controller CR is stabilized with respect to the support surface.

  Further, when the depression 28 where the thumb can be placed is formed on the finger contact side TS of the housing 10, the thumb 10 is pressed against the housing 10 and the thumb ball 51 is pressed against the inclined surface 22. Since the moment M2 is generated, the vibration on the front end side of the front portion FP of the controller CR is surely suppressed (in order to generate the counter moment M2, the recess 28 has a rear side RS relative to the rotation axis of the rotary wheel 35. Should be placed on).

  As shown in FIGS. 13 and 14, if the back surface of the housing 10 (specifically, the surface of the back base surface 16 of the back housing 15) is a plane, the controller CR on the patient's body or a bed or the like. The contact area increases with respect to the support surface. Therefore, the controller CR having such a plane as the back surface is more stably supported in the case of a procedure.

  In addition, in order to increase the frictional force between the controller CR and the support surface, the surface roughness of the back surface 16 may be increased, or a special coating (for example, a coating of a soft material layer) may be formed. Good.

[Other embodiments]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the controller CR, the shape of an imaginary line (see the alternate long and short dash line) connecting the front end of the front part FP to the front end of the rear part RP through the rotary wheel 35 is the center line (curved line) of the curved space 55 extended by the palm. It is desirable that the shape of the center line along the extending direction of the space and the shape substantially coincide with each other in plan view from the front surface 12 or the back surface 16 of the housing 10.

  In addition, the interior angle (referred to as a bending angle) formed by a virtual line from the front end of the front part FP to the rotating wheel 35 and a virtual line from the front end of the rear part RP to the rotating wheel 35 is not particularly limited. Although it is not greater than 90 ° and smaller than 180 °, it is preferably 130 ° or more and 155 ° or less.

  Further, when the controller CR is held by hand, the thumb ball 51 comes into contact with the patient's body or the bed, which is the support surface of the controller CR, and becomes a fulcrum of the hand, and the index finger covers the surface of the front surface 12. The tip of the index finger hangs down toward the back surface 16. Therefore, if the thickness of the controller CR (the length in the short direction SD) is longer than the length of the index finger (the length from the tip of the index finger to the first joint), the abdomen of the index finger will turn to the rotating wheel. It becomes easy to touch 35 and is easy to handle.

  On the other hand, if the controller CR is to be stably fixed by contacting not only the back surface of the controller CR but also the thumb ball 51 on the patient's body or bed, the thickness of the controller CR is The length from the base of the thumb closest to the thumb ball 51 to the base of the index finger is preferably shorter than the maximum length. This is because the thumb ball 51 of the hand holding the controller CR is in contact with the support surface of the controller CR.

  In the above description, the rotation axis of the rotation wheel 35 is the one extending in the short direction SD. However, the rotation wheel 35 is not limited to this and has a rotation axis extending in another direction (for example, the width direction WD). It doesn't matter. Also, other types of slide control mechanisms may be used.

CR controller 10 housing 11 front housing 12 front of housing 12W wheel cover 12F front front piece 12R front rear piece 13 front housing side 13Wts wheel cover finger side side 13W2 wheel cover rotating wheel side side 13Fts front front piece Side surface of finger rest 13Ffs Front side surface of front front piece [front end tip]
13Fws Side surface on the rotating wheel side of the front front piece 13Rts Side surface on the finger rest side of the front rear piece 13Rrs Side surface on the rear side of the front rear piece [tip of the rear part]
13Rws Side face of front rear piece on rotating wheel 15 Rear housing 16 Rear face of housing 16W Rear intermediate piece 16F Front rear piece 16R Rear rear piece 17 Side face of rear housing 17Wts Side face of rear intermediate piece 17Fts Finger of rear front piece Side surface on the abutment side 17Ffs Front side surface of the rear front piece [front end tip]
17Rts Side face on the finger rest side of the back rear piece C Arcuate end C12R Arch end on the surface of the front rear piece C13Rts Arc face end on the side of the finger rest side in the front rear piece C13Rws Bow on the side on the rotating wheel side in the front rear piece -Shaped end C17Rts The arcuate end of the side surface on the finger rest side of the back rear piece 22 Inclined surface 35 Rotating wheel [Discharge operation tool]
WP Intermediate part FP Front part RP Rear part SD Short direction LD Longitudinal direction WD Width direction AS Front side BS Back side FS Front side RS Back side WS Rotating wheel side TS Finger rest side

Claims (6)

A controller for holding and operating a stent delivery catheter,
A release operation tool for performing a stent release operation from the stent delivery catheter;
In the case of a procedure, a housing having a rear surface directed downward in the direction of gravity and serving as a supported surface, and a front surface serving as an opposite surface of the rear surface;
Including
The housing has a rear part extending from the discharge operation tool, and a front part extending from the discharge operation tool to the other side and in a different direction from the rear operation part,
The release operation tool is a rotating wheel whose axis of rotation is a short direction from the front to the back.
The rotating wheel does not move in the perspective direction of the stent delivery catheter,
In the perspective direction of the stent delivery catheter, the housing is formed such that a portion distal to the rotation axis center of the rotation wheel is longer than a portion proximal to the rotation axis center of the rotation wheel. And
When the front is viewed in plan, the three points of the tip of the rear part, the tip of the front part, and the rotation axis center of the rotating wheel are arranged in a triangle,
The back surface has a flat surface ,
The rotating wheel is disposed in the housing so as to be biased to one side of the width direction perpendicular to the perspective direction and the short direction,
The housing has an inclined surface pressed by a thumb ball on the other side in the width direction on the front side, more proximal than the rotating wheel,
The inclined surface is configured by a surface that is climbed from the other side in the width direction toward the one side, and that is climbed from the proximal side in the perspective direction toward the distal side .
controller.   The controller according to claim 1, wherein the rear portion of the housing includes an arcuate end that extends from the distal end side of the housing toward the discharge operation tool side.   The controller according to claim 2, wherein the rear portion has the arcuate ends arranged on one side and the other side in the width direction of the housing.   The controller according to any one of claims 1 to 3, wherein the discharge operation tool is disposed so as to be exposed from the housing on one side in the width direction of the housing. The controller according to any one of claims 1 to 4, wherein a recess for placing a thumb is formed on the other side in the width direction of the housing. The controller according to any one of claims 1 to 5 ,
A stent delivery catheter attached to the controller;
A stent delivery catheter system comprising: