TW201200184A - Catheter - Google Patents

Abstract

The invention provides a catheter having a ring shape construction in which a tubular member 4 at a distal position is connected with a tubular member 5 at a proximate position. In the interior of tubular member 4, tubes 41, 42 are provided proximal to a peripheral side of tubular member 4, the tubes 41, 42 being for operating wires to be inserted therein. In the interior of tubular member 5, an inner cylinder 5b is provided at a central portion of the cross section of the tubular member 5, the inner cylinder 56 being for inserting operating wires therein. An intermediate member 100 is provided in between the tubes 41, 42 and the inner cylinder 5b. The tube 41 and the inner cylinder 5b are connected with each other through a channel 112 provided in the intermediate member 100. The tube 42 and the inner cylinder 5b are connected with each other through a channel 114 provided in the intermediate member 100. Channels 112 and 114 are configured to extend from the inner cylinder 5b slantingly towards the tubes 41 and 42 to approach a peripheral side of the tubular member 5.

Description

201200184 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a catheter. More specifically, the present invention relates to a tube which is capable of changing a direction of insertion near a distal end in a body cavity by operating an operation portion disposed on the proximal side of the external body. [Prior Art] In a catheter such as an electrode catheter inserted into a heart through a blood vessel, the operation of the proximal end (base end or hand) of the catheter disposed outside the body is performed. The direction of the distal end (front end) of the catheter in the body is biased. (Patent Document) Patent Document 1: JP-A-2008-25766 (Summary of the Invention) The conventional catheter has a problem in that it is a leaf spring ( Plate spring) Extend the operation wire to the base end side as it is (proximal (four), so when operating the operation section, 'not only bend the other end of the guide g due to the position of the wire for operation' and make the whole The catheter (for example, from the left and the right of the catheter) starts to bend and the like, and reduces the operational feeling of the catheter operation. The present invention has been developed by the present inventors, and its object is to provide a technique for improving the direction of the vicinity of the distal end of the catheter. Operability. (Means for solving the problem) 323061 4 201200184 One aspect of the present invention is a kind of squeezing property; a compression-resistant member of a hollow structure, a system of components: a section in the section thereof; and a tubular member: , the axial direction of the member is set in the two = inner portion 'between the portions, and is provided with a passage: through:; = the passage between the member and the inside of the tube and the member formed inside the tube portion in the anti-factory contraction member a metal wire for connecting; a passage for operating the contracting member, a direction of the two-directions and a passage for providing a pressure-resistant passage; a passage for the member, and a side disposed on the side of the tube; The passage is formed by compressing, according to the aspect, the outer circumference of the official member. The insertion operation is used on the proximal side of the catheter, and is inserted along the central portion of the catheter. On the far side, the distal end of the wire is operated along the outer circumference of the catheter on the outer peripheral side of the catheter. In conclusion, 'the curve near the suspected overall bending of the catheter can be reduced, and the end portion becomes easy to bend' and The distal end of the catheter can be improved, and the deviation between the curved shapes of the user is reduced, and the user's sense of operation. The distal guide of the member! V has: the other tube portion is tied to the tubular tubular bundle °, in the axial direction of the tubular member, in the central portion of the surface of the clad member, on the opposite side of the tube portion, and closer to the outer portion than the tube, the central portion of the aj plane; other passages

323061 S 201200184 is formed in the intermediate member by connecting the passage formed inside the anti-compression member with the passage formed inside the other tube portion; and other operation metal wires for (4) the direction of the distal end, the green pass The passage provided in the anti-compressibility member, the other passage provided in the intermediate member, and the passage provided in the other tubular portion; and the other passages provided in the intermediate member may be the same as the anti-compressive member It is formed laterally and close to the outer circumference of the tubular member. Further, a leaf spring extending in the axial direction of the tubular member may be formed in the tube portion and the pot.彳“Delaying (Effect of Invention). According to the present invention, the operation of changing the direction near the distal end of the catheter can be improved. [Embodiment] An embodiment of the present invention is described in two ways. * The same components are denoted by the same reference numerals, and the catheter system of the embodiment may be a fistula, for example, a schematic side view of a catheter which can be used for the electrode deflection of the field. The schematic diagram of the first conduit is the same as that of the first embodiment. The diagram is a schematic diagram of the first embodiment. The third diagram is the z-plane diagram. The fourth diagram is the diagram of A, A, and the phase on the line: The outline of the upper line is schematically shown in Fig. 3 and Fig. 4, and the schematic cross-sectional view is omitted. Further, as shown in Fig. 1 and the working metal line is 5°_. The tubular structure is not the first embodiment. Camp 2 and for the giant member 4, the tube, the guide s2 is provided with the handle 5 handle 6, the distal end 323061 6 201200184 1 : and a plurality of ring electrodes 12a to i2kf; the poles: the poles l2a to 12k referred to as "the ring power" 'Appropriately the conduits 2 and 2 of the present embodiment are provided. 5 and 2 are in the distal end member of the tubular member 4) and the counter electrode 12. The distal end electrode 10 is attached to the tubular member 4 by means of a melt joint or the like. Bonding to the 12 k-series joints of the ring-shaped electrodes 12a The number of the ring-shaped electrodes 12 is not particularly limited to the second outer surface. The number of wires of 4 is appropriately set. "The insertion of the tubular member into the proximal end of the hand 5" is provided with a handle 6. Further, the tubular member 4 such as the third „sheet 7 constitutes an operation portion. As shown in Fig. 3 and Fig. 4, it is constituted by the outer tube of the (4) and the outer tube, and the chamber having the housing 4a in the early chamber. The internal servant extends over the predetermined area of the end. In addition, the outer:: fixing method can use the method of joining and welding. As will be described later, the second !b 2 〇 system is provided with a leaf spring and a plurality of passages (in Fig. 3; Between the roads 41, 42)) (refer to the first and second drawings: the softness is relatively low. For example, the tubular phase : Two and the soft member π near the proximal end and the member _ 冓 = 4 = a seek 仵 4, where the component! is configured on the side of the distal end 323061 7 201200184 with a Shore D hardness of 2 〇 to 63 The member is disposed adjacent to the proximal end side of the member ί, and has a member having a lower D hardness of ίΓιιΓ and a lower softness, and the transfer member is disposed on the proximal side of the member II, and has a member having a D hardness of 45 to a rib and a member of the member I is lower. Further, the tubular member ^ = the inner cylinder 4b is a body-shaped structure. Further, the tubular member 4 is also;

For the outer Qi 4a is a multi-layer structure. The main portion of the J tubular member 4 is composed, for example, of polyolefin, sense amine, and base formic acid. Tube = external warp generally about 〇 · 6 to length about the job (four) I, the outer diameter of the tubular member 4 is about 2. Οππη, the length is about 117 〇 mm. The e-recording electrode 1〇 and the ring (four) pole 12 are made of, for example, a metal having good conductivity, such as ing, steel, not <=, platinum. This image is well maintained, and the distal end piece is made up of electric money and ring electric == platinum or the alloy. The distal end piece electrode:: and the outer diameter of the garment electrode 12 are not particularly = the same degree 'usually, about. .5 to 3; member 4 Fig. 5 is a view taken along line B of Fig. 2. Fig. 6 is a schematic squint of the 1 U plane of Fig. i. Fig. 5 is a cross-sectional view of the present embodiment. As shown in Fig. 4 and the layout board 30, the plurality of pieces ^= the inside of the tubular member 4 * This embodiment is at the form of = 4, 35, 36. The plates (4) are received along the tubular member, and the plate has a plate-like body extending in the axial direction of the tubular member 4_^, and the two main surfaces of the axial direction are 3Ga, 30b, g 323061 201200184 The leaf spring 30 is composed of two sides 3〇C, 3〇d in the Λ direction. This end extends from the f-end of the camp to the vicinity of the distal end of the tubular member 4, while the proximal 30 extends at a predetermined distance from the distal end of the ft. Here, the leaf spring is adjacent to the end portion 30e of the side surface of the 30f and the member 4, and the end portion is embedded in the tubular member 4 (the inner cylinder (6)). The p, , ^ way, the storage space 20 is divided into two areas. Also, the flute 1 π two-work 2 〇 is divided into one main surface 3 of the leaf spring 30 (the area on the side of the side Sob 2〇A, and The second side of the other main surface 30b side of the leaf spring 30 is referred to herein as "the above-mentioned "the end portion 30e and the end portion 30f are embedded in the tubular body 4b"), which means extending in the leaf spring go to the tubular member * The side faces 3Gc, 3Gd in the axial direction and the contact areas of the side faces 30 = 30d of the two main surfaces 30a, 3Gb are in contact with the tubular member & in the present embodiment, the two passes are spread over the entire axial direction region. The end portions 3Gc, 30f are in contact with the inner wall of the same 4 〇 =. In this way, the leaf spring 30 is buckled over the entire length and is in the state of the tube = member 4, so that the operation wire can be controlled to operate. The leaf spring 30 twists the tubular member 4. As a result, the twisting rigidity of the duct 2 is improved, and the flat portion of the duct 2 can be further improved. Resistance. Furthermore the presence of only a range-based panel 30 may be curved in accordance with the length of other areas of the catheter 2 and be appropriately set.

In the first region 2A and the second region 2B separated by the leaf spring 30, a plurality of paths are formed in the blade. In the present embodiment, the passages 31, 33, and 34 are not provided in the first region 20A, and the passages 32, 35, and 36 are provided in the second region 20B. a passage 31 provided in the first area 20A and a passage 31 provided in the second area

The passages 32 of 9 323061 S 201200184 20B are respectively inserted as operation wires, and the passages 33, 34 provided in the i-th region, and the passages 35, 36 of the second region 20B are extended by the handle 6, and The power supply is connected to the distal end plate electrode 10 and the ring electrode is used for the passage through which the wire is inserted. The plurality of strip passages 31 to 36 are formed by a plurality of branch pipes 41 45, 46 (tube portions), respectively. That is, in the present embodiment, the plurality of branch pipes 41 to 46 having the structure of =, 44 are housed in the housing space 2q, and the hollow portions of the plurality 2 41 to 46 are the passages 31 to 36, respectively. The support system is equivalent to the operation of the gold lip line inserted into the universal tube & 41, 42 ❹ inner diameter ', that is, the diameter of the TM system: truth: 3 state of the tube and the inner diameter of the tube 43 to 46, that is, the passage 33 to 36 eve ancient _, 〇.45 coffee. b straight*, for example, the cross-sectional view on the DD line of Fig. 3 is shown in Fig. 3, Fig. 4, and Fig. 5, and is provided by the cymbal 5 and the inside of the outer cylinder h. It is hollow and consists of two cylinders. 〇mm。 The outer diameter of the tubular member 5 is generally about 0.6mm to 3mm, and the same is the same as the one, and in the present embodiment, the diameter of the tube is about 2. 〇mm. In the tubular structure, the synthetic resin of the tubular member outer cylinder 5a may, for example, be condensed to form an amide, a polyurethane or the like. The inner wall 2 of the outer core: the passage surrounded by the entrained amine and the poly-periphery passes through the intermediate passages which are described later, the passage 33 formed by ^^ 323061 10 201200184, the passage 34 formed by the tube 44, and the tube 45. The formed via 35' and the via 36 formed by the tube 46 are in communication. The inner cylinder 5b is provided in the central portion of the cross section of the outer cylinder 5a, and is provided along the axial direction of the outer cylinder 5a. The inner cylinder 5b is formed of a material having a high modulus of elasticity, in other words, a material having high compression resistance. For example, the inner cylinder 5b is made of a synthetic resin such as polyamine, polyetheretherketone or liquid crystal polymer, or a superelastic metal such as SUS (Stainless Steel Sheet 'no steel sheet) or NiTi (nickel-titanium). A metal tube or a metal coil of a rectangular coil is formed. In the present embodiment, the inner cylinder 5b is a SUS pipe. The inner diameter and the inner diameter of the inner circumference 5b are, for example, 0.92, 0. 67mm. The passage 82 of the hollow portion of the inner cylinder 5b is transmitted through the intermediate member 100 to be described later, and communicates with the passage 31 formed by the tube 41 and the passage 32 formed by the tube 42. Further, the inner cylinder 5b is an example of a "compression resistant member" having a hollow structure. Fig. 8 is a cross-sectional view taken on E-E^ of Fig. 3. Fig. 9 is a schematic perspective view of the intermediate member 100 including the cross section of the duct in the axial direction and the direction orthogonal to the fiscal direction of the duct. The intermediate member 100 is interposed between the inner cylinder 4b and the inner cylinder 5b in the inner portion on the far side of the outer cylinder 5a. A plurality of guides s 2 are disposed on the intermediate member 1 大致 in the substantially axial direction, and the passages 112 and the inner cylinders are provided to connect the passages 82 disposed in the intermediate structure of the tubular member. 5b has a passage 114 for connecting the passages provided in the tubular member 4 to the intermediate member 1 (10). Hereinafter, the openings in the vicinity of the passage 82 in the through-to-inner cylinder 5b are referred to as the opening on the side of the passage 112 for the passage 112, the opening on the palpebral side, and the π on the proximal side of the passage 112 323061 11 201200184. Further, the opening of the passage 114 is referred to as an opening of the distal opening of the passage 114, and a proximal proximal opening, respectively. The passage 112 is connected to the proximal opening for the passage of the passage 4 of the passageway m. 2 is connected to the passage "way" provided in the proximal opening portion of the tubular structure and the inner cylinder 5b. On the other hand, the opening 32 of the opening portion of the passage 114 is used for the passage 32 of the member 4, and the opening portion is fastened to the opening of the proximal side of the Seto-Shojichi passage 32, and the sigh is placed near the official shape. The side opening is connected to the inside of the inner cylinder. 14 connection. Thus, the distal opening passages 82 for the inter-member (10) are connected. Both the passage 31 and the passage 32 are opposite to the failure in the inner cylinder 5b. The passage 1 is located in the official member 5, the sapphire 30, the third and the passage buckle, and the slab. The road 82 is connected to the other side of the side and the leaf spring 30. The cross-section of the passage 112 is connected to the outer circumference of the end portion 112 of the passage (the end portion 112 of the passage 82 side) which tends to be two, and the passage passage 82 and the passage 32 are connected. Similarly, the center of the 4yj plane on the side of the passage 32 is inclined toward the outer circumference of the official member 5 in the direction of the passage Π4 on the side of the passage 82, and the path 1U and the passage] 14°: the member of the official member 5 Axis direction. Therefore, the road 32) becomes larger. The closer the S is from the passage 82 to the passage 31 (or the passage 1 of the outer wall of the inner cylinder 5b) is provided with a passage 80' surrounded by the passage of the inner wall member 4 of the outer cylinder 5a, and Connecting the tubular structure, the passage 34, the passage 35, the passage 116 of the passage 36, the 323061 12 201200184 passage 117, the passage 118, the passage 119. In the present embodiment, the passage 116, the passage 117, the passage 118, and the passage 119 are respectively The axial direction of the tubular member 5 is formed in the groove of the outer wall portion of the intermediate member 100, and the inner wall of the tubular member 5 that plugs the groove. Further, the passage 116, the passage 117, the passage 118, and the passage 119 can also be used as The intermediate member 100 is provided through the through hole in the axial direction of the tubular member 5. Further, on the near side of the intermediate member 100, a recess 120 having the same inner diameter as the outer diameter of the inner cylinder 5b is provided. The tip end portion of 5b reaches the recess 120 to fix the intermediate member 100 and the inner cylinder 5b. The passage 112 and the proximal opening of the passage 114 are disposed at the bottom of the recess 120 from the proximal side of the conduit 2, and at the recess 120. The bottom of the passage 11 2 and the passage 114 communicate with the passage 82. The material for forming the intermediate member 100 is not particularly limited, and examples thereof include a liquid crystal polymer. At the distal end of the operation wire 50a, a metal for operation in the tube 41 is formed. A portion of the spherical anchor (not shown) having a large diameter of the wire 50a. Similarly to the distal end of the operation wire 50b, a portion of the ball larger than the diameter of the operation wire 50b located in the tube 42 is formed. An anchor (not shown) is formed on the inner side of the distal end piece electrode 10 with a recess (not shown), and the recess is filled with solder (not shown). The operation wire 50a is provided separately. The anchor of the distal end of the operation wire 50b is embedded in the solder. In this manner, the operation wires 50a, 50b are fixed to the solder and the distal end piece electrode 10, and are connected to the tubular member 4. Near the far end.

13 323061 S 201200184 Second stay: The metal wire 5〇a is slidably inserted in the tubular member 4 - the test operation wire 50b is slidably inserted into the pipe 42. Further, the proximal end of the operation wire 50a is connected to the grip piece 7 shown in Figs. 1 and 2 via a passage 82 formed in the passage 112 and the inner cylinder 5b of the intermediate member 100. Further, the proximal end of the operation wire 50b is connected to the gripper 7 shown in Fig. 1 and Fig. 2 via the passage 丨 14 of the intermediate member 1 and the passage 82 in the inner cylinder. By this means, by operating the grip sheets 7 shown in Figs. 1 and 2, the operation metal wires 50a' 50b' are stretched and the distal end of the catheter 2 can be deflected. In the present embodiment, the distal end of the catheter 2 can be deflected in the direction of the arrow symbol D1 of FIG. 2 by the stretching operation wire 5〇a, and the catheter can be made by the stretching operation wire 50b. The distal deflection of 2 is the direction of the arrow symbol D2 of Fig. 2. Further, by providing the anchors ' at the distal ends of the operation wires 50a, 50b, respectively, the operation wires 5a, 5b can be prevented from being detached from the solder. In this way, the degree of operational reliability of the catheter 2 can be improved. Further, in the present embodiment, the operation wires 5A, 5B are fixed to the distal end electrode ίο, but are not particularly limited, and the distal ends of the operation wires 5A, 5B are also It can be fixed to the tubular member 4 or the like. The distal end piece electrode is inserted into the tubular member 4 by a wire 6 and inserted into the tube 45. The distal end piece electrode is electrically connected to the distal end piece electrode 1 () by a wire 6G. Specifically, the distal end of the distal end piece electrode lead 6 is embedded in solder (not shown) inside the distal end piece electrode 10. In this way, 323061 14 201200184 = far-end end piece _ wire 6 ° and the distal end piece electrode _ splicing = even: (four) end piece electrode wire 6 〇 the far end can also be connected by electricity 11 The end piece electrode is 1 〇. The proximal end of the pole wire 6 is electrically connected to the inside of the handle 6 via the intermediate path U8 and the outer cylinder 5a 盥 8 。. The passage between the inner poems 5b is electrically connected to the plurality of annular electrodes of the ring-shaped electrode 12 in a state of being electrically connected to each other in a state of being electrically connected to the tube core 4. The pores of the tubular member 4 are electrically connected to each of the rings; =; 6 and are disposed at the distal end of the wire using the solder (not shown - each annular electrode 12. In the tubular structure / not) The electrode is connected to the external luminaire 5a and interposed by a wire formed on the ring electrode of 〇2 = through the pipe 43, through the passage u6 of the η] member ι〇0, and the passage 8 设置 between the outer and the same 5b. The passage 1Π and the m(9)e passing through the tube-shaped electrode member 4 of the tube 44 are formed in the intermediate member 100 to the inside of the handle. Further, the passage 80 between the a and the inner cylinder 5b and the conductor for the conductive electrode are: outer: the tubular member 4 is inserted into the ring of the tube 46, and the outer cylinder 5a and the inner portion: the passage 119 of the intermediate member 100 and the present Real/channel (9) to guide the inside of the handle. Connected to the tubes 45, 46: = outer tube I1:: tube 43, 44 contact, inner circumference of the tube tube. The second to the 46 series are in close contact with each other and are fixed to the inner joint and the welded joints "to 46 and the inner cylinder 4b, which can be used in the field 2〇b, the plurality of branches, the first area 2〇A and the second area Area

The tube of Lu Zhongxi knife, in this first area 2〇A

C 323061 15 201200184 The two branch pipes 43, 44 on the side and the two branch pipes 45, 46 on the second region 20B side are respectively provided in contact with the main surfaces 30a, 30b of the leaf spring 30. In this way, the leaf spring 30 is in a state of being sandwiched by the tubes 43, 44 and the tubes 45, 46, so that the operation of the platen 30 in the twisting direction of the tubular member 4 can be controlled. Therefore, the torsional rigidity of the catheter 2 can be further improved. Further, in the first region 20A and the second region 20B, the metal wires for the operation of the metal wires 41, 42 are provided spaced apart from the plate 30. Therefore, the leaf spring 30 can be bent with a smaller force than when the tubes 41, 42 are approached by the leaf spring 30. Therefore, the operability of the catheter 2 is improved. The tubes 41, 42 are disposed, for example, such that the central axis is located outside the circle of the central axes of the tubes 43, 44, 45. Further, in the present embodiment, in the first region 20A, the two branch pipes 43,44 are provided so as to be cool along the center line of the leaf spring 30 in the axial direction of the duct 2. Similarly, in the second region 20, the two branch pipes 45, 46 are provided to sandwich the center line of the leaf spring 30 along the axial direction of the duct 2. Then, the operation wire 41 for the operation of the metal wire is disposed between the two pipes 43, 44, and the pipe 42 for the operation of the metal wire is disposed between the two pipes 45, 46. In this way, the tubes 41, 42 can be brought close to the center line of the leaf spring 30 in a direction parallel to the main surfaces 30a, 30b of the leaf spring 30, so that the torsional rigidity of the catheter 2 can be further improved. Further, the metal wire plug-in general-purpose tube 41 is provided to be externally connected to the tubes 43, 44, and the operation-use metal wire-inserted tube 42 is provided to be externally connected to the tubes 45, 46. In this way, the tube 41 is spaced apart from the tubes 43, 44 and the strength of the catheter 2 can be increased as compared to the case where the outer tube 42 is separated from the tubes 45, 46. 16 323061

S 201200184 The pipe 4i is hereby shown in Fig. 46. The outline of the arrangement of the ducts 2 to 46 of the present embodiment is described in detail. Fig. 6 is a view for explaining that the tube 41 is cut in the center axis & 46 of the catheter 2, respectively. In this way, the way that ΐΓ is assumed to approximate the circle s can be approximated to be circular. The cross-sectional shape of the tubular Du& member 4 is easily maintained to allow the catheter 2 to be inserted into the cross-sectional shape of the cow 4 to be approximately circular. Therefore, according to the present embodiment 2, it is inserted into the body cavity of the patient: 1 oper 2 2 has good operability. Further, the size (thickness) of the maximum size of the member 4 is generally determined by the length (diameter) of the largest diameter portion of the tube. Here, when the shape is compared with the flat shape of the cross section, the cross section goes to a circle-like space utilization ratio. The polygonal shape of the surface can increase the number of the catheters 2 and the like, and the guide line can be obtained. Further, the tubular structure can be formed. To the sex month b. The strength of the tubular member 4 can be increased: the cross-sectional shape of the member 4 is set to be approximately circular, and the external force forms a stable c' and can be compared with the line from the multi-directional direction by, for example, as described above, the annular electrode 12 And the cross-sectional shape of the tubular member 4 is locked to the s-shaped member 4. By the force of the tubular structural member 4:: like a circular 'when riveting, by applying force σ in the tube "approximate circular 丄 Ι Ι = piece 4 deformation. Furthermore, the degree of the front heart is true The door has a perfect circle and has the above effects. In addition, the side 30c, 30d and the dummy can also be used.

323061 S 17 201200184 Set the leaf spring 30 in such a manner as to approximate the circle S contact. At this time, the tubular member 4 can be formed into a more stable structure with respect to an external force. In the present embodiment, in the first region 2A, the two branch pipes 43, 44 are disposed apart from each other, and in the second region 20B, the two branch pipes 45, 46 are spaced apart from each other. Therefore, in the i-th region, a space 22A surrounded by the tube tube 4 is formed, and in the second region 2〇β, a space 22β surrounded by the tubes 45, 46, the tube 42, and the leaf spring 30 is formed. . Here, at least 22 Α, 22 , can be inserted as needed to adjust the catheter = member (hereinafter, appropriately referred to as a material regulating member). This tube tune I example: which is made up of _ and other metals such as polyether ether _ and other resins. By inserting the bending adjustment member, the tubular member 4 can be changed; the member =; = tube_flexibility. By bending either of the - ‘, or by differently, the members are inserted into the spaces 22A and 22Bi, and the bending of the two is called a face. For example, by inserting the bending adjustment member at a predetermined position from the distal end of the catheter 2 in the space 22A, the region on the A* side of the bending adjustment member can be set as the curved region of the catheter 2. By this means, the bending range of the catheter 2 in the direction of the arrow symbol D1 of the tube: Fig. 2 can be shortened to be shorter than the bending range of the catheter 2 when the arrow symbol D 2 of Fig. 2 is examined. The bending adjustment member ' inserted into the first region 2A may also be in contact with the tube, the two branches 43, 44, and the leaf spring 30, respectively. Further, the bending regulating members inserted into the second region 20B may be in contact with the tubes 42, 2, and the leaf springs 30, respectively, and the tubular member 4 may be formed into a more stable structure with respect to the external force 18 323061 201200184. As described above, the sheet 30 of the s 2 such as the cymbal extending from the tubular member 4 of the present embodiment extends to the end of the tubular structure m. At least a portion of the slab is disposed in the tubular member 4 in a manner to be operated. internal. Therefore, when the operation is performed, the force is applied to the leaf spring, and the struts of the member 4 are generated in the leaf spring 3〇. Thus, the :=2: turning rigidity' result can be improved by ==' in this way, the curve-generating property in the duct 2 can be reduced, and the tubular shape can be caused by the twist of the leaf spring 3g. Furthermore, the bending of the distal end piece electrode with the wire 60 and the = tube 2 causes the wires to entangle each other. In this way, the phenomenon is avoided in the catheter 2 (the tubular structure is mainly prevented from being uneven or the like. The surface is caused by the wound wire, and the catheter 2 according to the present embodiment is transmitted through the intermediate member (10) on the proximal side of the guide g 2 'The operation gold green 50a'50b is inserted along the center portion of the catheter 2, and the operation wires 5Ga, 5Gb are inserted along the outer circumference side of the catheter 2 on the far side of the catheter 2. The distal end of the wire coffee maker 50b is located on the outer peripheral side of the catheter 2, so that the torque applied to the distal end of the catheter 2 can be increased when the operation is performed by the metal wire 5b. ' As a result, the catheter 2 is far away. The position portion is easily bent, and the deviation between the position of the distal end portion of the catheter 2 and the user's (4) listening shape is small, so that the user's operational feeling can be improved. Further, the inner tube 5b has compression resistance. Therefore, it can prevent stretching operation 323061

S 19 201200184 Metal wire 5Ga, f-shaped member at 5Gb as a whole (four) 曲, 曲曲, ^~ Since the operation wire 5Qa, 5Qb passes through the middle of the pipe 2, the portion of the inner cylinder 5 has almost no application in the material direction. The force is changed to ten, and the force is applied to the compression direction of the inner cylinder 5b (the longitudinal direction is made; the end is bent, and the catheter 2 can be prevented from falling down on the way.) "Yueyue" In addition, the 'in the official member 5' is used for operation. The metal wire pool is torn through the passage 82, and the w-line plug-in peach (9) will be connected by eight. In this way, even if the operation wire ▲, 5Ob is moved in the passage 82, the passage will not be touched. In the case of the wire in the 8G, the damage to the wire is suppressed, and the operational reliability of the pipe 2 can be improved. The present invention is not limited to the above embodiment, and various modifications such as design changes can be performed based on the knowledge of those skilled in the art. The embodiment of the combination or the modification is also included in the scope of the present invention. A new embodiment is produced by the combination of the above embodiment and the following modifications, and the combined embodiment and deformation are also provided. Individual effects In the above embodiment, the leaf springs 3 are embedded in the official members 4 over the entire length of the leaf springs 3, and the both end portions 30e may be formed in one of the full lengths of the plate 箦3〇, 30f is embedded in the tubular member 4. That is, the tubular member may also bury at least a portion of the end portion 30e and/or the end portion 3〇f extending in the axial direction within a range in which the torsional rigidity lifting effect of the official shape 2 is obtained. Into the tubular member 4. In the catheter 2 of the above embodiment, the proximal end of the inner cylinder 4b and the outer portion 4 4a are substantially identical, but the proximal end of the inner cylinder 4b may be larger than the outer cylinder. The proximal end of 4a extends further toward the intermediate member 1〇〇. As a result, the contact area of the inner 323061 20 201200184 2 4b with the outer cylinder 5& is increased, so that the connection strength between the tubular member 4 and the tubular member 5 can be improved. The catheter 2 of the above embodiment is formed in the inner cylinder 4b. When the space 2 Π··· ～ 叹 ° ° is a lumen, the inner cylinder 4b has a single-chamber structure, and the inner cylinder 4b The inside of the cavity can be configured to be different from the inner cylinder 4b, and the tubes 41 to 46 can also be combined with the tubular member 4. - 1 means that the inner cylinder 4b can also have a multi-lumen structure, the system j having a plurality of cavities constituting the passages 31 to 36 and through holes for inserting the leaf springs 3 。. The lining of each cavity of the passages 31 to 36 =: the portion of the constant thickness forms the tube portion, and corresponds to the main surface 3〇a of the passage 33 to %: the two j springs 30, and the bird contacts. The effect of torsion rigidity is improved. In addition, the inner tube smashing machine: is made into the slab 30, the main mu « # 7 heart, ·,. constituting, to the side of the tubular 〇3〇C' 3〇d buried in the ancient = member 4 Structure, the torsion of the catheter 2 can be further increased. In addition, when the inner cylinder has a multi-cavity structure, it becomes == filled in the area corresponding to the space 22A, 22B'. In the above-described embodiment, the through-holes through which the regulating members are inserted are in the passages of all the passages 33 to (6), but the passages 33 to 36 may not be completely inserted into the passage of the fourth passage. For example, a thermoelectric sensor of a temperature sensor which is also at a temperature near the distal end of a portion of the passages 33 to 36 can be used as a detection catheter. (Industrial Applicability) The present invention is applicable to a catheter. [Simple description of the diagram] 323061

S 21 201200184 Fig. 1 is a schematic side view of a catheter of an embodiment. Fig. 2 is a schematic plan view of a catheter of an embodiment. Fig. 3 is a schematic cross-sectional view taken along line A-A of Fig. 1. Fig. 4 is a schematic cross-sectional view taken along line A'-A' of Fig. 2. Fig. 5 is a schematic perspective view of a cross section taken along the line β-β of Fig. 2; Fig. 6 is a cross-sectional view taken along line C-C of Fig. 1. Figure 7 is a cross-sectional view taken on line D-D of Figure 3. Figure 8 is a cross-sectional view of the Ε-Ε line of Figure 3. Fig. 9 is a schematic perspective view of an intermediate member including a cross section of the catheter in the axial direction and a cross section perpendicular to the axial direction of the catheter. [Main component symbol description] 2 Catheter 4, ! 5 Tubular member 4a, 5a Outer tube 4b ' 5b Inner tube 6 Handle 7 Scratch sheet 10 Remote end piece electrode 12 ' 12a to 12k Ring electrode 20A First area 20B No. 2 Area 22A, 22B Space 30 Leaf Springs 30a, 30b Main Surfaces 30c, 30d Sides 30e, 30f Ends 31 > 32, 33, 34, 35, 36, 80, 82, 112, 114, 116, 117 118, 119 Pathway 41 '42, 43, 44, 45, 46 tube 50a, 50b operation wire 100 intermediate member 120 recess 22 323061

S

Claims (1)

201200184 VII. Patent application scope: 1. A catheter comprising: a tubular member having flexibility; a compression-resistant member of a hollow structure, in a proximal inner portion of the tubular member, along an axis of the tubular member The direction is provided at a central portion of the cross section of the tubular member; the tube portion is disposed in the distal inner portion of the tubular member, and is disposed closer to the outer periphery than the central portion of the cross-section of the tubular member along the axial direction of the tubular member The intermediate member is disposed between the anti-compressive member and the tube portion, and is provided with a passage that connects a passage formed inside the anti-compressibility member with a passage formed inside the tube portion; a wire for operation for operating a distal end, and for inserting a passage provided in the anti-compressibility member, a passage provided in the intermediate member, and a passage provided in the tube portion; and being disposed in the middle The passage of the member is from the side of the anti-compressive member toward the side of the tube portion and close to the tubular shape Embodiment is formed of an outer circumferential member. 2. The catheter of claim 1, wherein: the other tube portion is disposed in a distal inner portion of the tubular member and disposed along the axial direction of the tubular member to sandwich the tubular member a portion of the central portion of the cross section opposite to the tube portion and a portion closer to the outer circumference than a central portion of the cross section of the tubular member; 323061 S 201200184 other passages formed by forming a passage formed inside the anti-compression member The intermediate passages of the other pipe portions are connected to each other in the intermediate member; and other operation metal wires are used for operating the distal end direction, and are made to pass through the passage provided in the anti-compressibility member, and are disposed in the foregoing The passage of the intermediate member and the passage provided in the other pipe portion; and the other passages provided in the inter-t member may be from the side of the anti-compression member toward the side of the other pipe portion and close to the outer circumference of the tubular member The way is formed. 3. The catheter according to claim 1 or 2, wherein a sapphire extending in an axial direction of the tubular member is provided between the tube portion and the other tube portion. 2 323061