CN114569136B - Medical controllable bending-based mapping microcatheter - Google Patents

Abstract

The invention provides a medical controllable bending-based mapping microcatheter, which relates to the technical field of mapping catheters and comprises the following components: a support base; the supporting seat is of a -shaped platy structure, the upper part of the supporting seat is provided with a handle, the front end surface and the rear end surface of the supporting seat are both provided with a plug connector, and the lower part between the two plug connectors is connected with a synchronous driving part; the six-edge cylinder is fixed outside the handle. According to the invention, through the arrangement of the locking part, the flexible catheter head end can be effectively controlled when being bent, and through the cooperation of the supporting seat and the plug connector, the handle is not required to be held all the time during the marking, so that the workload of medical staff is reduced, the stability is better, the problems that the existing marking microcatheter head end cannot be controlled after being bent, the handle on the marking microcatheter is required to be held manually, the workload of the medical staff is increased, the stability during the marking is poor, and the marking quality of the catheter is affected are solved.

Description

Medical controllable bending-based mapping microcatheter

Technical Field

The invention relates to the technical field of mapping catheters, in particular to a medical controllable bending-based mapping microcatheter.

Background

The microcatheter is adapted for use in conducting endocardial electrophysiology mapping, such as recording electrocardiographic signals or transmitting stimulation signals, by placing the endocardium of a human heart intravenously and stimulating the heart muscle by contact with the endocardium, and may acquire an electrocardiogram of the atrial region.

However, when the existing mapping microcatheter is used, although the bending of the catheter head end can be realized by pushing the push button on the handle, the handle push button is lack of an effective locking structure, and the catheter head end has certain elasticity, so that the catheter head end can easily rebound to the original position under the action of self elasticity, the bending of the catheter head end is uncontrollable, and furthermore, the catheter head end is placed into the endocardium of a human heart, and the handle on the existing mapping microcatheter needs to be held by medical staff all the time, so that the workload of the medical staff is increased, the stability of the manual long-time holding mode is poor, and the mapping quality of the catheter is affected.

Disclosure of Invention

In view of the above, the present invention provides a medical controllable bending-based mapping microcatheter, which can effectively control the pulling rope B when the flexible catheter head end is pulled to bend by the arrangement of the locking part, and can avoid the need of holding the handle by a medical staff all the time during the mapping by the cooperation of the supporting seat and the plug connector, thereby reducing the workload of the medical staff and having better stability.

The invention provides a medical controllable bending-based mapping microcatheter, which specifically comprises: a support base; the supporting seat is of a -shaped platy structure, the upper part of the supporting seat is provided with a handle, the front end surface and the rear end surface of the supporting seat are both provided with a plug connector, and the lower part between the two plug connectors is connected with a synchronous driving part; the handle is fixed with six arris section of thick bamboo outside, and all offered two spacing jacks on six terminal surfaces of six arris section of thick bamboo outside week, the handle front end is fixed with and connects the smooth shell, and connect the smooth shell front end middle part and offered the bar opening, the bar opening internal fixation that connects on the smooth shell has the slip guide arm, and the outside slip of slip guide arm has the drive slider, the spring has been cup jointed to the slip guide arm outside, it is fixed with font slide to drive slider rear side, and font slide up end installs locking part, it is connected with the flexible pipe of elasticity to connect smooth shell front end, and connect smooth shell up end and be even form and offered rectangular groove.

Optionally, a clamping plate is slidably arranged on the inner side of the supporting seat through four vertical guide rods, two clamping nuts are symmetrically arranged on the upper end surface of the clamping plate in a left-right mode, one clamping screw is connected inside each clamping nut through threads, and the lower ends of the two clamping screws penetrate through the clamping plate; the two clamping screws are rotationally connected to the front part of the inner side of the supporting seat, the upper ends of the outer parts of the two clamping screws are respectively fixed with a driving gear, the two driving gears are meshed with each other to rotate the transmission gear on the top end face of the supporting seat, the rear side of the top end face of the supporting seat is fixedly provided with a supporting block, the upper end face of the supporting block is provided with a groove, the shape of the lower end of the inside of the groove is matched with that of the lower end of the six-edge cylinder, the six-edge cylinder is positioned inside the groove, and two T-shaped sliding grooves are formed in the bottom end face of the supporting block.

Optionally, the front side surface of the support seat is symmetrically provided with two dovetail sliding grooves, the front end surface of the clamping plate is symmetrically provided with two dovetail sliding blocks, and the two dovetail sliding blocks are respectively and slidably connected with the two dovetail sliding grooves; the inner top end surface of the supporting seat and the upper end surface of the clamping plate are respectively provided with an anti-slip rubber cushion.

Optionally, the plug connector comprises a supporting plate, a sliding plate block and a pulling rod, wherein the supporting plate is of a -shaped structure and is fixed on one side surface of the supporting block; the inside slip of backup pad has the slip plate, and the slip plate one side personally submits the symmetry form and is equipped with two inserted bars, and slip plate another side is fixed with the pulling rod that runs through a backup pad side, and the pulling rod outside is located the backup pad inboard and has cup jointed the spring.

Optionally, when the plug connector is in a limiting state, two plug rods on the sliding plate block penetrate through one side surface of the supporting block and are plugged with two limiting plug holes formed in one side surface of the hexagonal cylinder.

Optionally, the synchronous driving piece comprises an L-shaped driving block and a pull rope A, T-shaped bracket, wherein the number of the L-shaped driving blocks is two, two T-shaped sliding blocks are arranged on the upper end faces of the two L-shaped driving blocks, and the two T-shaped sliding blocks are respectively in sliding connection with two T-shaped sliding grooves formed in the bottom end faces of the supporting blocks; two the L type drives piece upper portion looks back all is fixed with a stay cord A, and two stay cord A other end respectively with two pulling rod looks opposite ends fixed connection, the quantity of T type support is two, and two T type supports are installed respectively on the supporting shoe front and back both ends face, all installs two pulleys on every T type support, and four pulleys respectively with two stay cord A sliding connection.

Optionally, the synchronous driving piece still includes rack and pinion, the quantity of rack is two, and two racks are fixed respectively on two L type drive piece, and the meshing has the pinion of rotation on the supporting shoe bottom surface between two racks.

Optionally, ten platinum iridium alloy electrode rings are uniformly arranged at the front end of the outer periphery of the elastic soft catheter, a pull rope B is fixed at the left end inside the elastic soft catheter, and one end of the pull rope B is positioned at the edge of the left end inside the elastic soft catheter; the other end of the pull rope B is fixed on the left end face of the driving sliding block.

Optionally, the locking part comprises a locking slide shell, a locking slide block, a rectangular slide block and a pressing plate, wherein the locking slide shell is fixed on the top end surface of the -shaped slide plate, the locking slide block slides in the locking slide shell, the lower parts of the front end surface and the rear end surface of the locking slide block are respectively provided with a rectangular slide block, and a slide rod is fixed on the front side of the upper end surface of the rectangular slide block on the front side; the pressing plate is rotationally connected to the top end face of the -shaped sliding plate through the supporting block, a rectangular sliding opening is formed in the rear side of the right end face of the pressing plate, and the rectangular sliding opening is in sliding connection with a sliding rod.

Optionally, a locking cutting is arranged at the lower end of the locking sliding block, and the lower edge angle of the right end surface of the locking cutting is a round angle; when the locking part is in a locking state, the lower end of the locking cutting is inserted into one of the rectangular grooves.

Advantageous effects

According to the mapping microcatheter of the embodiments of the invention, compared with the traditional mapping microcatheter, through the arrangement of the locking part, after the head end of the elastic soft catheter is inserted into the heart chamber, the driving sliding block is pulled rightwards by hand, so that the driving sliding block drives the head end of the elastic soft catheter to bend through the pull rope B, then the locking part is driven to slide rightwards through the -shaped sliding plate, and then after the locking part stops sliding rightwards, the lower end of the locking cutting strip at the lower end of the locking sliding block is inserted into one rectangular groove, so that the locking sliding shell, the -shaped sliding plate and the driving sliding block can not slide leftwards at the moment, the head end of the elastic soft catheter can be controlled after bending, and even if the head end of the elastic soft catheter has certain elasticity, the head end of the elastic soft catheter is not easy to rebound to the original position under the self elasticity, thereby improving the reliability of the head end of the elastic soft catheter when mapping and recording electrocardiosignals.

In addition, through the cooperation of supporting seat and plug connector, after the flexible conduit head end is being put into the heart chamber intima of a person, at first with the supporting seat through the grip block clamp fixed to operation bedside department, then place the six arriss section of thick bamboo on the handle inside the recess on the supporting shoe, then place the recess on the supporting shoe after six arriss section of thick bamboo is inside, the inserted bar on the sliding plate is inside will inserting spacing jack, thereby make six arriss section of thick bamboo and handle wholly obtain effective fixed support effect, thereby when the mark, the handle need not to be held always by medical personnel, not only alleviateed medical personnel's work burden, and support through the supporting seat, thereby have better stability, avoid influencing the mapping quality of flexible conduit.

In addition, through the setting of synchronous drive spare, when the handle need be taken down from the supporting shoe, only need pinch two L type drive piece lower extreme to opposite direction through the manual, make two stay cords A drive two slip plates respectively and remove to opposite direction, then drive the inserted bar through two slip plates and pull out from spacing jack is inside, thereby make six arriss section of thick bamboo lose the fixed action on the supporting shoe, then can take down the handle from the supporting shoe, thereby the convenience of handle when taking down from the supporting shoe has been improved, and through the cooperation of two rack-and synchro gear, can make two L type drive the piece and can obtain synchronous movement when pinching.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings described below are only for illustration of some embodiments of the invention and are not intended to limit the invention.

In the drawings:

FIG. 1 shows a schematic diagram of a front isometric view of a mapping microcatheter according to an embodiment of the invention;

FIG. 2 shows a schematic diagram of a rear isometric view of a mapping microcatheter according to an embodiment of the invention;

FIG. 3 shows a schematic diagram of a mapping microcatheter in a disassembled state according to an embodiment of the invention;

FIG. 4 shows a schematic view of a support base and clamping plate disassembled according to an embodiment of the invention;

FIG. 5 shows a schematic view of a support block, plug and synchro-driver according to an embodiment of the invention;

FIG. 6 shows a schematic view of a plug and a synchronous drive according to an embodiment of the present invention;

FIG. 7 shows a schematic view, partially in section, of a connecting slide housing and flexible resilient conduit in accordance with an embodiment of the invention;

FIG. 8 illustrates a schematic diagram of a font sled and latch according to an embodiment of the present invention;

FIG. 9 shows a schematic view of a lock slide housing and a compression plate after disassembly in accordance with an embodiment of the invention;

fig. 10 shows a schematic view, partly in section, of a coupling slide and a locking portion according to an embodiment of the invention.

List of reference numerals

1. A support base; 101. a clamping plate; 102. clamping a screw; 103. clamping a nut; 104. a support block; 105. a transmission gear; 2. a handle; 201. a hexagonal cylinder; 202. limiting jack; 203. The connecting slide shell; 204. rectangular grooves; 205. driving the sliding block; 206. -shaped sliding plate; 207. A sliding guide rod; 3. a plug-in component; 301. a support plate; 302. a sliding plate; 303. pulling the rod; 4. a synchronous driving member; 401. an L-shaped driving block; 402. a pull rope A; 403. a T-shaped bracket; 404. a synchronous rack; 405. a synchronizing gear; 5. an elastic flexible catheter; 501. platinum iridium alloy electrode ring; 502. a pull rope B; 6. a locking part; 601. a locking slip case; 602. a locking slide block; 603. A rectangular slide block; 604. pressing the plate.

Detailed Description

In order to make the objects, aspects and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiment of the present invention. Unless otherwise indicated, terms used herein have the meaning common in the art. Like reference numerals in the drawings denote like parts.

Examples: please refer to fig. 1 to 10:

the invention provides a medical controllable bending-based mapping microcatheter, which comprises: a support base 1; the supporting seat 1 is of a -shaped platy structure, the handle 2 is arranged on the upper portion of the supporting seat 1, the front end face and the rear end face of the supporting seat 1 are both provided with the plug connectors 3 for limiting the handle 2, and the lower portion between the two plug connectors 3 is connected with the synchronous driving piece 4; the handle 2 is externally fixed with six arris barrels 201, and two spacing jacks 202 have all been seted up on six terminal surfaces of six arris barrels 201 outside, handle 2 front end is fixed with and is connected smooth shell 203, and the bar through-hole has been seted up at the preceding terminal surface middle part of smooth shell 203, bar through-hole internal fixation on the smooth shell 203 has slide guide 207, and slide guide 207 outside slip has drive slider 205, slide guide 207 outside has cup jointed the spring, thereby it has left elasticity to drive slider 205, drive slider 205 rear side is fixed with font slide 206, and locking part 6 is installed to font slide 206 up end, smooth shell 203 front end is connected with flexible pipe 5 of elasticity, and smooth shell 203 up end of connection is evenly offered rectangular groove 204.

In addition, according to the embodiment of the invention, as shown in fig. 1 to 3, the inner side of the supporting seat 1 is provided with a clamping plate 101 in a sliding manner through four vertical guide rods, the upper end surface of the clamping plate 101 is provided with two clamping nuts 103 in a bilateral symmetry manner, each clamping nut 103 is internally connected with one clamping screw 102 through threads, and the lower ends of the two clamping screws 102 penetrate through the clamping plate 101 for clamping and fixing the supporting seat 1 to the operation bedside; the two clamping screws 102 are rotationally connected to the front part of the inner side of the supporting seat 1, the upper ends of the outer parts of the two clamping screws 102 are respectively fixed with a driving gear, and a transmission gear 105 which rotates on the top end surface of the supporting seat 1 is meshed between the two driving gears, so that when one clamping screw 102 is rotated, the other clamping screw 102 can be driven to simultaneously rotate, the rear side of the top end surface of the supporting seat 1 is fixed with a supporting block 104, the upper end surface of the supporting block 104 is provided with a groove, the shape of the lower end inside the groove is matched with the shape of the lower end of the six-edge cylinder 201, the six-edge cylinder 201 is positioned inside the groove, and the bottom end surface of the supporting block 104 is provided with two T-shaped sliding grooves; the front side surface of the inside of the supporting seat 1 is provided with two dovetail sliding grooves in a bilateral symmetry mode, the front end surface of the clamping plate 101 is provided with two dovetail sliding blocks in a bilateral symmetry mode, and the two dovetail sliding blocks are respectively in sliding connection with the two dovetail sliding grooves, so that the clamping plate 101 is more stable when sliding up and down; the top end surface inside the supporting seat 1 and the upper end surface of the clamping plate 101 are both provided with anti-slip rubber mats, so that the friction force of the clamping surface of the clamping plate 101 is improved;

as shown in fig. 1 and 5, theplug connector 3 comprises asupport plate 301, a slidingplate 302 and a pullingrod 303, wherein thesupport plate 301 is -shaped, and thesupport plate 301 is fixed on one side surface of thesupport block 104; the inner side of the supportingplate 301 slides with the slidingplate 302, and one side surface of the slidingplate 302 is symmetrically provided with two inserting rods for being inserted into the limitinginsertion holes 202, the other side surface of the slidingplate 302 is fixedly provided with a pullingrod 303 penetrating through one side surface of the supportingplate 301, and the outside of the pullingrod 303 is positioned at the inner side of the supportingplate 301 and sleeved with a spring, so that the slidingplate 302 has better elasticity; when theplug connector 3 is in a limiting state, two plug rods on the slidingplate 302 penetrate through one side surface of the supportingblock 104 and are plugged with two limitingjacks 202 formed on one side surface of thehexagonal cylinder 201, so that thehexagonal cylinder 201 can be effectively fixed on the supportingblock 104;

as shown in fig. 2 and 6, the synchronous driving piece 4 comprises two L-shaped driving blocks 401, a pull rope a402 and a T-shaped bracket 403, wherein the number of the L-shaped driving blocks 401 is two, two T-shaped sliding blocks are arranged on the upper end surfaces of the two L-shaped driving blocks 401, and the two T-shaped sliding blocks are respectively in sliding connection with two T-shaped sliding grooves formed in the bottom end surfaces of the supporting blocks 104, so that the L-shaped driving blocks 401 slide on the bottom end surfaces of the supporting blocks 104 more stably; the two opposite back sides of the upper parts of the two L-shaped driving blocks 401 are respectively fixed with a pull rope A402, the other ends of the two pull ropes A402 are respectively fixedly connected with opposite ends of the two pull rods 303, the number of the T-shaped brackets 403 is two, the two T-shaped brackets 403 are respectively arranged on the front end face and the rear end face of the supporting block 104, each T-shaped bracket 403 is provided with two pulleys, and the four pulleys are respectively in sliding connection with the two pull ropes A402, so that the pull ropes A402 can obtain guiding function; the synchronous driving piece 4 further comprises two synchronous racks 404 and synchronous gears 405, wherein the number of the synchronous racks 404 is two, the two synchronous racks 404 are respectively fixed on the two L-shaped driving blocks 401, and the synchronous gears 405 rotating on the bottom end surface of the supporting block 104 are meshed between the two synchronous racks 404;

as shown in fig. 1 and fig. 7, ten platinum iridium alloy electrode rings 501 are uniformly arranged at the front end of the outer periphery of the elasticsoft catheter 5 and used for mapping electrocardiosignals, a pull rope B502 is fixed at the left end inside the elasticsoft catheter 5, and one end of the pull rope B502 is positioned at the edge of the left end inside the elasticsoft catheter 5, so that one end of the pull rope B502 is fixed at the eccentric position of the left end inside the elasticsoft catheter 5, and the head end of the elasticsoft catheter 5 is more reliable when being bent; the other end of the pull rope B502 is fixed on the left end face of thedriving sliding block 205;

as shown in fig. 8 and 9, the locking part 6 comprises a locking slide shell 601, a locking slide block 602, a rectangular slide block 603 and a pressing plate 604, wherein the locking slide shell 601 is fixed on the top end surface of the -shaped slide plate 206, the locking slide block 602 slides in the locking slide shell 601, the lower parts of the front end surface and the rear end surface of the locking slide block 602 are respectively provided with a rectangular slide block 603, and a slide rod is fixed on the front side of the upper end surface of the rectangular slide block 603 on the front side and is used for being in sliding connection with the rear end of the pressing plate 604; the pressing plate 604 is rotatably connected to the top end surface of the -shaped sliding plate 206 through a supporting block, so that the pressing plate 604 forms a lever structure, the upward pulling operation of the locking sliding block 602 is facilitated, a rectangular sliding opening is formed in the rear side of the right end surface of the pressing plate 604, and the rectangular sliding opening is in sliding connection with a sliding rod; the lower end of the locking slide block 602 is provided with a locking cutting, and the lower edge angle of the right end face of the locking cutting is a round angle; when the locking part 6 is in the locking state, the lower end of the locking cutting is inserted into one of the rectangular grooves 204, so that the driving sliding block 205 can not slide leftwards at the moment, and the reliability of the left end of the elastic soft guide 5 after bending is improved.

Specific use and action of the embodiment: in the invention, when the head end of the elasticsoft catheter 5 is inserted into the heart chamber, thedriving sliding block 205 is manually pulled rightwards, so that thedriving sliding block 205 drives the head end of the elasticsoft catheter 5 to bend through the pull rope B502, then the lockingpart 6 is driven to slide rightwards through the -shaped slidingplate 206, and then after the lockingpart 6 stops sliding rightwards, the lower end of a locking cutting bar at the lower end of thelocking sliding block 602 is inserted into onerectangular groove 204, so that thelocking sliding shell 601, the -shaped slidingplate 206 and thedriving sliding block 205 can not slide leftwards at the moment, and the head end of the elasticsoft catheter 5 can be controlled after bending;

when the head end of the elasticflexible conduit 5 is placed into the endocardium of a human heart, the supporting seat 1 is clamped and fixed to the edge of an operation bed through the clampingplate 101, one clampingscrew 102 is manually rotated to drive one driving gear to drive the other driving gear through thetransmission gear 105, so that the other clampingscrew 102 simultaneously rotates in opposite directions, then the two clampingnuts 103 drive the clampingplate 101 to move upwards under the action of threads, then the supporting seat 1 is fixed at the edge of the operation bed through the inner top end surface of the supporting seat 1 and an anti-slip rubber pad on the upper end surface of theclamping plate 101, then the six-edge barrel 201 on thehandle 2 is placed into a groove on the supportingblock 104, and then after the six-edge barrel 201 is placed into the groove on the supportingblock 104, the inserted rod on the slidingplate 302 is inserted into the limitingjack 202, so that the six-edge barrel 201 and thehandle 2 are effectively fixedly supported as a whole.

Finally, it should be noted that the present invention is generally described in terms of a/a pair of components, such as the location of each component and the mating relationship therebetween, however, those skilled in the art will appreciate that such location, mating relationship, etc. are equally applicable to other components/other pairs of components.

The foregoing is merely exemplary embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims (8)

1. A medical controlled bend-based mapping microcatheter comprising: a support base (1);

the supporting seat (1) is of a -shaped platy structure, the handle (2) is arranged on the upper portion of the supporting seat (1), the front end face and the rear end face of the supporting seat (1) are both provided with one plug connector (3), and the lower portion between the two plug connectors (3) is connected with the synchronous driving piece (4);

the novel multifunctional sliding handle is characterized in that a six-edge cylinder (201) is fixed outside the handle (2), two limiting insertion holes (202) are formed in six end faces on the outer periphery of the six-edge cylinder (201), a connecting sliding shell (203) is fixed at the front end of the handle (2), a strip-shaped through hole is formed in the middle of the front end face of the connecting sliding shell (203), a sliding guide rod (207) is fixed in the strip-shaped through hole on the connecting sliding shell (203), a driving sliding block (205) is arranged outside the sliding guide rod (207) in a sliding mode, a spring is sleeved outside the sliding guide rod (207), a -shaped sliding plate (206) is fixed on the rear side of the driving sliding block (205), a locking portion (6) is arranged on the upper end face of the -shaped sliding plate (206), an elastic soft guide pipe (5) is connected to the front end of the connecting sliding shell (203), and rectangular grooves (204) are uniformly formed in the upper end face of the connecting sliding shell (203).

The locking part (6) comprises a locking slide shell (601), a locking slide block (602), rectangular slide blocks (603) and a pressing plate (604), wherein the locking slide shell (601) is fixed on the top end surface of a -shaped slide plate (206), the locking slide block (602) slides in the locking slide shell (601), the lower parts of the front end surface and the rear end surface of the locking slide block (602) are respectively provided with one rectangular slide block (603), and the front side of the upper end surface of one rectangular slide block (603) at the front side is fixedly provided with a slide rod; the pressing plate (604) is rotationally connected to the top end surface of the -shaped sliding plate (206) through a supporting block, a rectangular sliding opening is formed in the rear side of the right end surface of the pressing plate (604), and a sliding rod is arranged on the rectangular sliding opening to be in sliding connection;

the lower end of the locking sliding block (602) is provided with a locking cutting, and the lower edge angle of the right end surface of the locking cutting is a round angle; when the locking part (6) is in a locking state, the lower end of the locking cutting is inserted into one of the rectangular grooves (204).

2. The controllably bending-based mapping microcatheter of claim 1, wherein: the inner side of the supporting seat (1) is provided with a clamping plate (101) in a sliding manner through four vertical guide rods, the upper end face of the clamping plate (101) is provided with two clamping nuts (103) in a bilateral symmetry manner, one clamping screw (102) is connected inside each clamping nut (103) through threads, and the lower ends of the two clamping screws (102) penetrate through the clamping plate (101);

two clamping screw rods (102) are rotationally connected to the front part of the inner side of a supporting seat (1), a driving gear is fixed to the upper end of the outer portion of each clamping screw rod (102), a transmission gear (105) which rotates on the top end face of the supporting seat (1) is meshed between the two driving gears, a supporting block (104) is fixed to the rear side of the top end face of the supporting seat (1), a groove is formed in the upper end face of the supporting block (104), the shape of the lower end of the inner portion of the groove is matched with the shape of the lower end of a six-edge cylinder (201), the six-edge cylinder (201) is located inside the groove, and two T-shaped sliding grooves are formed in the bottom end face of the supporting block (104).

3. The controllably bending-based mapping microcatheter of claim 2, wherein: two dovetail sliding grooves are formed in the front side surface of the inside of the supporting seat (1) in a bilateral symmetry mode, two dovetail sliding blocks are arranged in the front end surface of the clamping plate (101) in a bilateral symmetry mode, and the two dovetail sliding blocks are respectively connected with the two dovetail sliding grooves in a sliding mode;

the anti-slip rubber pads are arranged on the top end face inside the supporting seat (1) and the upper end face of the clamping plate (101).

4. The controllably bending-based mapping microcatheter of claim 2, wherein: the plug connector (3) comprises a supporting plate (301), a sliding plate block (302) and a pulling rod (303), wherein the supporting plate (301) is of a -shaped structure, and the supporting plate (301) is fixed on one side surface of the supporting block (104);

the inside of the supporting plate (301) slides and is provided with a sliding plate block (302), one side surface of the sliding plate block (302) is symmetrically provided with two inserted bars, the other side surface of the sliding plate block (302) is fixedly provided with a pulling rod (303) penetrating through one side surface of the supporting plate (301), and the outside of the pulling rod (303) is positioned at the inner side of the supporting plate (301) and sleeved with a spring.

5. The controllably bending-based mapping microcatheter of claim 4, wherein: when the plug connector (3) is in a limiting state, two plug rods on the sliding plate block (302) penetrate through one side surface of the supporting block (104) and are plugged with two limiting jacks (202) formed in one side surface of the hexagonal cylinder (201).

6. The controllably bending-based mapping microcatheter of claim 4, wherein: the synchronous driving piece (4) comprises L-shaped driving blocks (401), pull ropes A (402) and T-shaped brackets (403), wherein the number of the L-shaped driving blocks (401) is two, two T-shaped sliding blocks are arranged on the upper end faces of the two L-shaped driving blocks (401), and the two T-shaped sliding blocks are respectively in sliding connection with two T-shaped sliding grooves formed in the bottom end faces of the supporting blocks (104);

two the L type drives piece (401) upper portion looks back all is fixed with a stay cord A (402), and two stay cord A (402) other end respectively with two pulling rod (303) looks back end fixed connection, the quantity of T type support (403) is two, and two T type supports (403) are installed respectively on supporting shoe (104) front and back both ends face, all installs two pulleys on every T type support (403), and four pulleys respectively with two stay cords A (402) sliding connection.

7. The controllably bending-based mapping microcatheter of claim 6, wherein: the synchronous driving piece (4) further comprises two synchronous racks (404) and synchronous gears (405), wherein the number of the synchronous racks (404) is two, the two synchronous racks (404) are respectively fixed on the two L-shaped driving blocks (401), and the synchronous gears (405) rotating on the bottom end surfaces of the supporting blocks (104) are meshed between the two synchronous racks (404).

8. The controllably bending-based mapping microcatheter of claim 1, wherein: ten platinum iridium alloy electrode rings (501) are uniformly arranged at the front end of the outer periphery of the elastic soft catheter (5), a pull rope B (502) is fixed at the left end inside the elastic soft catheter (5), and one end of the pull rope B (502) is positioned at the edge of the left end inside the elastic soft catheter (5);

the other end of the pull rope B (502) is fixed on the left end face of the driving sliding block (205).

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