CN211935127U

CN211935127U - Catheter and guide wire cooperative pushing device and catheter and guide wire cooperative pushing system

Info

Publication number: CN211935127U
Application number: CN201922490430.7U
Authority: CN
Inventors: 张庭超; 俞佳威; 丘信炯
Original assignee: Hangzhou Weiqiang Medical Technology Co Ltd
Current assignee: Hangzhou Endonom Medtech Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-17
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a pipe seal wire is pusher in coordination and pipe seal wire is pusher in coordination. The pipe seal wire is used for propelling movement pipe and the partial seal wire of locating in the pipe in coordination with pusher, and pipe seal wire is in coordination with pusher includes: the catheter fixing piece is fixedly connected with the catheter; the guide wire fixing piece is fixedly connected with the part of the guide wire, which is arranged outside the catheter; a drive assembly; the rotating assembly comprises a first rotating assembly and a second rotating assembly, the first rotating assembly is connected between the driving assembly and the catheter fixing piece, and the second rotating assembly is connected between the driving assembly and the guide wire fixing piece; the driving component is used for driving the first rotating component and the second rotating component to rotate reversely, so that the guide wire fixing component and the catheter fixing component respectively drive the guide wire and the catheter to move alternatively or synchronously. The utility model provides a pipe seal wire pusher in coordination and pipe seal wire pusher in coordination can accurate propelling movement seal wire and pipe, and simple structure, small in size, equipment convenience.

Description

Catheter and guide wire cooperative pushing device and catheter and guide wire cooperative pushing system

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a pipe seal wire is pusher and pipe seal wire is pusher in coordination for operation is intervene to blood vessel.

Background

At present, vascular interventional surgery is an important means for treating cardiovascular and cerebrovascular diseases, and compared with traditional surgical treatment, the trauma to a human body is greatly reduced. The procedure of vascular interventional surgery is generally: firstly, a puncture needle is used for puncturing superficial arteries or veins on the body surface of a human body, then a guide wire and a catheter enter the vascular system of the human body through a puncture point incision, then the guide wire and the catheter are alternately pushed until the catheter is pushed to a target position, and then a diagnosis and treatment instrument and/or a medicine are delivered to the target position by taking the catheter as a channel, so that the focus is treated in the blood vessel. Common vascular interventional procedures include arterial occlusive interventional patency, angioplasty, and the like.

In the prior art, a vessel intervention operation mainly depends on a doctor to push a guide wire and a catheter by hand according to the operation habit of the doctor, when the guide wire and the catheter approach a target position, particularly a vessel part with serious occlusion, the guide wire and the catheter need to be pushed accurately and alternately, but the precision of pushing the guide wire and the catheter by hand is low, the pushing distance is not well controlled, repeated attempts are often needed, the efficiency is low, and the vessel is possibly damaged undesirably. The existing catheter and guide wire cooperative operation device has the problems of multiple parts, complex structure, large integral volume and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can accurate propelling movement seal wire and pipe, and simple structure, small in size, equipment convenient pipe seal wire pusher and pipe seal wire are pusher in coordination and pipe seal wire is pusher in coordination.

In one aspect, the utility model provides a pair of pipe seal wire is pusher in coordination for propelling movement pipe and part are worn to locate seal wire in the pipe, include:

the catheter fixing piece is fixedly connected with the catheter;

the guide wire fixing piece is fixedly connected with the part of the guide wire, which is arranged outside the catheter;

a drive assembly; and

the rotating assembly comprises a first rotating assembly and a second rotating assembly, the first rotating assembly is connected between the driving assembly and the catheter fixing piece, and the second rotating assembly is connected between the driving assembly and the guide wire fixing piece;

the driving assembly is used for driving the first rotating assembly and the second rotating assembly to rotate reversely, so that the guide wire fixing piece and the catheter fixing piece respectively drive the guide wire and the catheter to move alternatively or synchronously.

On the other hand, the utility model provides a pair of pipe seal wire is pusher in coordination, reach including seal wire, pipe the pipe seal wire in coordination pusher, pipe fixed connection in the pipe mounting, the seal wire part wears to locate in the pipe just locate of seal wire part fixed connection outside the pipe in the seal wire mounting.

The utility model provides a pipe seal wire is pusher in coordination, through connecting first runner assembly in drive assembly with seal wire mounting and connecting the second runner assembly in between drive assembly and the pipe mounting, when drive assembly drive first runner assembly and second runner assembly, first runner assembly and second runner assembly can drive seal wire mounting and pipe mounting alternating motion or synchronous motion respectively, and then drive seal wire and pipe alternating motion or synchronous motion, realize alternately or synchronous propelling movement seal wire and pipe, effectively improve propelling movement efficiency; the guide wire and the catheter can be cooperatively pushed through one driving assembly, so that the number of parts is reduced, and the device has the advantages of simple structure, small size and the like; the catheter guide wire is matched with a catheter fixing piece in the pushing device to be conveniently and quickly assembled and disassembled with the catheter, and the guide wire fixing piece is conveniently and quickly assembled and disassembled with the guide wire, so that the operation time is favorably shortened; moreover, compared with the traditional pushing of the guide wire and the catheter by hand, the pushing of the catheter and the guide wire is more accurate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective assembly view of a catheter and guide wire cooperative pushing device provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a catheter and guide wire cooperative pushing device according to an embodiment of the present invention;

fig. 3 is a schematic view of a half shell on one side of a catheter and guide wire cooperating with a pushing device according to an embodiment of the present invention;

fig. 4A is a schematic view of a catheter guidewire cooperating with a pushing device to push a guidewire according to an embodiment of the present invention;

fig. 4B is a schematic view of the catheter and guide wire cooperating with the pushing device according to the embodiment of the present invention;

fig. 5 is a schematic view of a gear transmission of another structure form of the catheter guidewire cooperative pushing device provided by the embodiment of the present invention;

fig. 6 is a schematic view of a driving gear, a housing and an operating rod of the catheter and guide wire cooperative pushing device according to the embodiment of the present invention;

fig. 7 is a schematic view illustrating a second driven gear and a second screw of the catheter guide wire cooperative pushing device according to the embodiment of the present invention;

fig. 8 is a schematic structural view illustrating a catheter fixing manner in the catheter and guide wire cooperative pushing device according to the embodiment of the present invention;

fig. 9A is an exploded schematic view of a guide wire fixing manner in the catheter guide wire cooperative pushing device according to the embodiment of the present invention;

fig. 9B is a rear view of a guide wire fixing structure in the catheter guide wire cooperative pushing device according to the embodiment of the present invention;

FIG. 9C is a schematic cross-sectional view taken along line A-A of FIG. 9B;

fig. 10 is a schematic view of a self-locking structure in the catheter guidewire cooperative pushing device according to the embodiment of the present invention;

fig. 11 is a schematic view illustrating the operation of the catheter and guide wire cooperative pushing device according to the embodiment of the present invention;

fig. 12 is a schematic view of the cooperative advancing of the guide wire and the catheter in the vascular occlusion section by the catheter and guide wire cooperative advancing device provided by the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The embodiments of the present invention can be combined with each other appropriately.

Referring to fig. 1 and 2, a cooperative pushing device 100 for guiding a catheter and a guide wire is provided in an embodiment of the present invention. The device is suitable for accurately and cooperatively alternately pushing or synchronously pushing the catheter 10 and the guide wire 11 during intravascular interventional therapy. Wherein the guide wire 11 is threaded in from one end of the catheter 10 and out from the other end of the catheter 10.

Referring to fig. 1 and 2, the cooperative pushing device 100 for guiding a catheter and a guiding wire includes a housing 40, a first rotating component 22, a second rotating component 23, a catheter fixing component 30, and a guiding wire fixing component 34.

Referring to fig. 1 and 2, the housing 40 is substantially hollow and cylindrical. The housing 40 is formed by a left half shell 41 and a right half shell 42. Specifically, the left half-shell 41 and the right half-shell 42 can be connected by snap, adhesion, screw connection, or the like. The space enclosed by the left half-shell 41 and the right half-shell 42 after being folded forms an inner cavity of the housing 40. For convenience of description, an axial direction (an axial direction is also a length extending direction) of the housing 40 is defined as a Y-axis direction, wherein a direction indicated by an arrow is a Y-axis forward direction.

Referring to fig. 1, a first through groove 91 and a second through groove 92 for communicating an inner cavity of the housing 40 with an outer space of the housing 40 are formed on an outer circumferential surface of the housing 40. The first through grooves 91 and the second through grooves 92 are arranged in the Y-axis direction. Further, the first through groove 91 and the second through groove 92 are both elongated. The first through groove 91 and the second through groove 92 both extend in the Y-axis direction.

Referring to fig. 1 and 2, the guide wire 11 and the catheter 10 are disposed outside the housing 40 and both extend along the axial direction of the housing 40. In other words, the guide wire 11 and the catheter 10 both extend in the Y-axis direction. Specifically, a part of the duct 10 is located opposite to the first through groove 91, and another part of the duct 10 extends in the positive direction of the Y axis. A portion of the guide wire 11 is located opposite to the second through-slot 92, and another portion of the guide wire 11 is inserted through the catheter 10, extends through the lumen of the catheter 10, and exits the catheter 10.

Alternatively, referring to fig. 2 and 3, the first rotating element 22 and the second rotating element 23 are both disposed in the inner cavity of the housing 40.

Optionally, referring to fig. 2 and 3, one end of the catheter fixing member 30 is disposed in the inner cavity of the housing 40 and connected to the first rotating assembly 22, and the other end of the catheter fixing member 30 extends out of the housing 40 through the first through groove 91 and is fixedly connected to the catheter 10. Specifically, the catheter fixing member 30 is fixed to the catheter 10 in a detachable manner. One end of the guide wire fixing member 34 is disposed in the inner cavity of the housing 40 and is connected to the second rotating assembly 23. The other end of the guide wire fixing member 34 extends out of the housing 40 through the second through-groove 92 and is fixedly connected to the portion of the guide wire 11 disposed outside the catheter 10. Specifically, the guide wire fixing member 34 is fixed to the guide wire 11 in a detachable manner.

Optionally, referring to fig. 2 and 3, the catheter and guidewire cooperative pushing device 100 further includes a driving assembly 20, in this embodiment, the driving assembly 20 is disposed inside the housing 40 or partially outside the housing 40.

Referring to fig. 3, the first rotating assembly 22 is connected between the driving assembly 20 and the guide wire fixing member 34, and the second rotating assembly 23 is connected between the driving assembly 20 and the catheter fixing member 30.

Referring to fig. 3, the driving assembly 20 is configured to drive the first rotating assembly 22 and the second rotating assembly 23 to rotate reversely, so that the guide wire fixing member 34 and the catheter fixing member 30 move along the Y-axis direction separately or together, and the guide wire fixing member 34 and the catheter fixing member 30 move along the Y-axis direction separately or together and drive the guide wire 11 and the catheter 10 to move along the Y-axis direction alternately or synchronously.

It will be appreciated that referring to fig. 1 and 3, as the wire retainer 34 moves in the Y-axis direction, the wire retainer 34 moves within the second channel 92. When the catheter mount 30 is moved in the Y-axis direction, the catheter mount 30 moves within the first through slot 91.

The embodiment of the utility model provides a pipe seal wire is pusher in coordination is connected through setting up first rotating assembly 22 in drive assembly 20 with between seal wire mounting 34, set up second rotating assembly 23 and connect in drive assembly 20 with between pipe mounting 30, when drive assembly 20 drive first rotating assembly 22 and second rotating assembly 23, first rotating assembly 22 and second rotating assembly 23 can drive seal wire mounting 34 and pipe mounting 30 alternating motion or synchronous motion respectively, and then drive seal wire 11 and pipe 10 alternating motion or synchronous motion, realize alternately or synchronous propelling movement seal wire 11 and pipe 10, effectively improve propelling movement efficiency; the guide wire 11 and the catheter 10 can be pushed cooperatively through one driving assembly 20, so that the number of parts is reduced, and the device has the advantages of simple structure, small size and the like; the catheter and guide wire in cooperation with the catheter fixing part 34 in the pushing device 100 can be conveniently and quickly assembled and disassembled with the catheter 10, and the guide wire fixing part 30 and the guide wire 11 can be conveniently and quickly assembled and disassembled with each other, so that the operation time can be shortened; moreover, the pushing of the catheter 10 and the guide wire 11 is more accurate than the pushing of the conventional handheld guide wire 11 and the catheter 10.

The following embodiments illustrate specific configurations of the first rotating assembly 22 and the second rotating assembly 23, but the present invention is not limited to the following embodiments.

Referring to fig. 2 and 3, the catheter and guidewire cooperative pushing device 100 further includes a driving gear 44. The driving gear 44 is connected to the driving assembly 20 through a rotating shaft. To facilitate a clearer description of the structure of the catheter and guide wire cooperative pushing device 100 provided by the present invention, the rotation axis direction of the driving gear 44 is defined as the X-axis direction.

Referring to fig. 2 and 3, the first rotating assembly 22 includes a first driven gear 61 and a first screw 46 coaxially connected to the first driven gear 61. The first screw 46 is threadedly engaged with the catheter securement member 34. The second rotating assembly 23 includes a second driven gear 62 and a second screw 47 coaxially connected to the second driven gear 62. The second screw 47 is screwed with the guide wire fixing member 30.

The first driven gear 61 and the second driven gear 62 are disposed opposite to each other on both sides of the driving gear 44. The teeth on the drive gear 44 mesh with the teeth on the first driven gear 61. The teeth on the drive gear 44 mesh with the teeth on the second driven gear 62. The driving gear 44 is used for rotating under the action of the driving assembly 20 and driving the first driven gear 61 and the second driven gear 62 to reversely rotate, so that the first screw 46 and the second screw 47 reversely rotate and drive the catheter fixing member 34 and the guide wire fixing member 30 to alternatively or synchronously move along the same direction.

Specifically, the first driven gear 61 and the second driven gear 62 are disposed oppositely, and a rotating shaft of the first driven gear 61 and a rotating shaft of the second driven gear 62 may be collinear, and the collinear direction is the Y-axis direction. The axial direction of the drive gear 44 is along the X-axis direction. The axial direction of the drive gear 44 is perpendicular to the axial direction of the first driven gear 61 and the axial direction of the second driven gear 62.

Referring to fig. 2 and 3, one end of the first screw 46 is coaxial with and fixedly connected to the first driven gear 61. The other end of the first screw 46 extends in a direction gradually away from the second driven gear 62. The first screw 46 is threadedly coupled to the catheter mount 30.

Referring to fig. 2 and 3, one end of the second screw 47 is coaxial with and fixedly connected to the second driven gear 62. The other end of the second screw 47 extends in a direction gradually away from the first driven gear 61. The second screw 47 is threadedly connected to the guide wire fixing member 34.

The spiral direction of the first screw 46 is opposite to the spiral direction of the second screw 47. For example, the first screw 46 is provided with a left-hand thread, and the second screw 47 is provided with a right-hand thread.

Referring to fig. 3, in particular, the axes of the first screw 46, the first driven gear 61, the second driven gear 62 and the second screw 47 are all collinear.

Referring to fig. 1 and 3, the first screw 46 corresponds to the first through groove 91, and the second screw 47 corresponds to the second through groove 92. The catheter fixing member 30 extends from the first screw 46 in the Z-axis forward direction to protrude through the first through groove 91 and fixedly connect the catheter 10. The guide wire fixing member 34 extends from the second screw 47 in the forward direction along the Z-axis to protrude through the second through-groove 92 and fixedly connect with the guide wire 11.

Referring to fig. 4A and 4B, in one embodiment, the driving gear 44, the first driven gear 61 and the second driven gear 62 are all bevel gears. The bevel teeth of the drive gear 44 can mesh with the bevel teeth of the first driven gear 61 and can also mesh with the bevel teeth of the second driven gear 62. In this embodiment, the driving gear 44, the first driven gear 61 and the second driven gear 62 are all bevel gears for illustration, and the details are not repeated.

In another embodiment, referring to fig. 5, the driving gear 45 is a spur gear, and the first driven gear 63 and the second driven gear 64 are both single-sided side gears. The side gears are provided with teeth on end faces perpendicular to the axial direction of the gears, rather than on the circumferential faces. And the end surface of the first driven gear 63 on which the teeth are provided and the end surface of the second driven gear 64 on which the teeth are provided are opposed to each other. The spur gear of the drive gear 45 can mesh with the side teeth of the first driven gear 63, and can also mesh with the side teeth of the second driven gear 64.

Referring to fig. 3, when the first driven gear 61 and the second driven gear 62 rotate reversely, the first screw rod 46 and the second screw rod 47 rotate reversely, but because the spiral direction of the second screw rod 47 is opposite to the spiral direction of the first screw rod 46, the first screw rod 46 and the second screw rod 47 respectively drive the catheter fixing member 30 and the guide wire fixing member 34 to alternatively or synchronously move along the same direction.

Referring to fig. 2, the driving gear 44 includes a insection 441 having continuous teeth and a smooth 442 not having continuous teeth in the circumferential direction.

Specifically, referring to fig. 2, the driving gear 44 is a gear with missing teeth, that is, only a part of the circumferential surface of the driving gear 44 is provided with a plurality of continuous teeth, and the rest of the circumferential surface is smooth and is not provided with teeth. The utility model discloses do not do specific restriction to specific number of teeth, for example, specific number of teeth can be 1 ~ 40. Alternatively, the number of teeth on the drive gear 44 is 10. The first driven gear 61 and the second driven gear 62 are full gears.

Referring to fig. 4A, when the serration 441 rotates to be engaged with the second driven gear 62, the first driven gear 61 is separated from the serration 441. The driving gear 44 rotates in a counterclockwise direction (with reference to the forward direction toward the X axis) to drive the second driven gear 62 to rotate in a counterclockwise direction (with reference to the forward direction toward the Y axis), in which the first driven gear 61 is not moved. Since the first driven gear 61 is stationary, the first screw 46, the guide tube fixing member 30 and the guide tube 10 are not stationary. The second screw 47 rotates along with the second driven gear 62 in the counterclockwise direction, and the guide wire fixing member 34 gradually moves along the Y-axis forward direction along with the rotation of the second screw 47, so as to drive the guide wire 11 to move along the Y-axis forward direction relative to the catheter 10, and push the guide wire 11, so that the portion of the guide wire 11 extending out of the catheter 10 increases.

Referring to fig. 4B, when the serration 441 rotates to be engaged with the first driven gear 61, the second driven gear 62 is separated from the serration 441. The driving gear 44 rotates in a counterclockwise direction (with reference to the forward direction toward the X-axis) to drive the first driven gear 61 to rotate in a clockwise direction (with reference to the forward direction toward the Y-axis), in which the second driven gear 62 is not moved. Since the second driven gear 62 is stationary, the second screw 47, the guide wire fixing member 34, and the guide wire 11 are stationary. The first screw rod 46 rotates along with the first driven gear 61 in the clockwise direction, and the catheter fixing member 30 gradually moves along the Y-axis forward direction along with the rotation of the first screw rod 46, so as to drive the catheter 10 to move along the Y-axis forward direction relative to the guide wire 11, and push the catheter 10.

Of course, when the driving assembly 20 rotates the driving gear 44 in a clockwise direction (with reference to the forward direction toward the X axis), the guide wire 11 and the catheter 10 can alternately move in the reverse direction along the Y axis. Referring to fig. 4A and 4B, one end of the catheter fixing member 30 is threadedly connected to the first screw rod 46. The other end of the catheter fixing member 30 extends out through the first through groove 91 (see fig. 1) and is fixedly connected to the catheter 10. One end of the guide wire fixing member 34 is screwed to the second screw 47. The other end of the guide wire fixing member 34 extends through the second through-groove 92 (see fig. 1) and is fixedly connected to the guide wire 11.

When the second screw 47 is rotated, the guide wire fixing member 34 moves forward along the Y-axis in the second through-groove 92. When the first screw rod 46 rotates, the catheter fixing member 30 moves in the first through groove 91 in the Y-axis forward direction.

When the driving gear 44 continuously rotates, the driving gear 44 alternately meshes with the first driven gear 61 and the second driven gear 62, so that the first driven gear 61 and the second driven gear 62 are alternately driven to respectively rotate alternately, the first screw 46 and the second screw 47 are driven to alternately rotate, and the catheter 10 and the guide wire 11 are driven to alternately move in the forward direction along the Y axis.

Preferably, the area of the smooth surface 442 in the circumferential direction of the driving gear 44 is larger than 2/3 circles of the driving gear 44, for example, the driving gear 44 is provided with teeth in the circumferential direction of the continuous 1/4, so as to ensure that the driven gears on both sides are not driven simultaneously when the driving gear 44 rotates, thereby realizing the cooperative and alternate pushing of the guide wire 11 and the catheter 10. The modules and pressure angles of the driving gear 44 and the driven gears on both sides should be equal so that the driving gear 44 is properly engaged with the driven gears on both sides. The transmission ratio of the driving gear 44 to the driven gears on both sides can be selected from 1-3, for example, the transmission ratio is 1.

Illustratively, 1/4 circles on the circumference of the driving gear 44 are provided with continuous teeth, the ratio of the number of teeth of the first driven gear 61 to the number of teeth of the driving gear 44 is 4, and the ratio of the number of teeth of the second driven gear 62 to the number of teeth of the driving gear 44 is 4, so that the first driven gear 61 and the second driven gear 62 respectively rotate 1/4 circles and the first screw 46 and the second screw 47 alternately rotate 1/4 circles every time the driving gear 44 rotates one circle. The guide tube 10 and the guide wire 11 are pushed forward 1/4 distance of the screw lead, so that the pushing distance can be accurately controlled, and the pushing precision is improved. Specifically, the first screw 46 and the second screw 47 may be single-thread or multi-thread. The lead range of the first screw 46 and the second screw 47 may be 0.1mm to 10 mm. Alternatively, the first screw 46 and the second screw 47 may both be single-threaded, with a pitch of 1mm and a lead of 1 mm.

In this embodiment, since the driving gear 44 is configured as a gear with missing teeth, the guide wire 11 and the catheter 10 are alternately pushed along the Y-axis, which is more suitable for the operation habit of the doctor.

In other embodiments, the drive gear 44 may be a gear without missing teeth, i.e., a full gear. The first driven gear 61 and the second driven gear 62 are also full gears. When the driving gear 44 rotates under the action of the driving assembly 20, the driving gear 44 can drive the first driven gear 61 and the second driven gear 62 to synchronously and reversely rotate, and further drive the first screw 46 and the second screw 47 to synchronously and reversely rotate, and since the spiral directions of the first screw 46 and the second screw 47 are opposite, the catheter fixing part 30 and the guide wire fixing part 34 can respectively drive the catheter 10 and the guide wire 11 to synchronously and forwardly move along the Y axis. When the driving gear 44 is rotated reversely by the driving assembly 20, the catheter fixing element 30 and the guide wire fixing element 34 can respectively drive the catheter 10 and the guide wire 11 to synchronously move reversely along the Y axis.

Referring to fig. 6, the housing 40 includes a hollow cylindrical main body case 401, and a first end plate 402 and a second end plate 403 disposed at opposite ends of the main body case 401. Illustratively, the main body case 401 is a hollow cylinder extending in the Y-axis direction. The first end plate 402 and the second end plate 403 are plate members that seal opposite ends of the body case 401, respectively.

Referring to fig. 6, the first end plate 402 has a first mounting hole 81. The inner wall of the main body case 401 is provided with a first mounting plate 71 disposed opposite to the first end plate 402. The first mounting plate 71 is provided with a second mounting hole 82. Referring to fig. 3, two ends of the first screw 46 respectively penetrate through the first mounting hole 81 and the second mounting hole 82. The first threaded rod 46 is captured between the first end plate 402 and the first mounting plate 71.

It should be noted that, in fig. 6, it can be understood that the structure inside the left half-shell 41 is radially symmetrical to the structure inside the right half-shell 42. The portion indicated by the first mounting hole 81 is a portion of the first mounting hole 81 located in the right half shell 42; the portion indicated by the first mounting plate 71 is a portion of the first mounting plate 71 located on the right half shell 42, and the portion indicated by the second mounting hole 82 is a portion of the second mounting hole 82 located on the right half shell 42.

Referring to fig. 3 and 6, the second end plate 403 has a third mounting hole 83. The inner wall of the main body case 401 is provided with a second mounting plate 72 disposed opposite to the second end plate 403. A fourth mounting hole 84 is formed in the second mounting plate 72. Both ends of the second screw 47 respectively penetrate through the third mounting hole 83 and the fourth mounting hole 84. The second threaded rod 47 is retained between the second end plate 403 and the second mounting plate 72.

Note that, in fig. 6, the portion indicated by the third mounting hole 83 is a portion of the third mounting hole 83 located on the right half shell 42; the portion indicated by second mounting plate 72 is a portion of second mounting plate 72 located on right half shell 42, and the portion indicated by fourth mounting hole 84 is a portion of fourth mounting hole 84 located on right half shell 42.

Referring to fig. 3 and 6, a receiving space 73 is formed between the first mounting plate 71, the second mounting plate 72 and the inner wall of the housing 40. The driving gear 44, the first driven gear 61, and the second driven gear 62 are disposed in the accommodating space 73.

Referring to fig. 3 and 6, the housing 40 further has a positioning hole 85 on the peripheral wall. The axial direction of the positioning hole 85 is the same as the axial direction of the driving gear 44, and both are along the X-axis direction. The drive assembly 20 is partially disposed outside the housing 40. The rotating shaft of the driving assembly 20 is fixedly connected to the axis of the driving gear 44 through the positioning hole 85.

In one embodiment, referring to fig. 3 and 6, the driving assembly 20 includes an operation lever 43. The rotating shaft of the operating rocker 43 extends into the inner cavity of the housing 40 through the positioning hole 85 and is fixedly connected with the axis of the driving gear 44. The operating portion of the operating rocker 43 is located outside the housing 40. The operating section of the rotary operating rocker 43 drives the drive gear 44 to rotate.

In another embodiment, the drive assembly 20 includes a motor (not shown). The motor is disposed inside the housing 40 or outside the housing 40. The rotating shaft of the motor is connected with the axle center of the driving gear 44, and the motor drives the driving gear 44 to rotate. The motor can be a small-sized DC motor or other electric driving mechanism, and the driving gear 44 is driven to rotate or stop by controlling the switch of the motor, so that the catheter and the guide wire cooperate with the pushing device 100 to push the catheter 10 and the guide wire 11 or stop pushing.

Specifically, referring to fig. 7, the second screw 47 is joggled with the second driven gear 62. Referring to fig. 3, the first screw 46 is joggled with the first driven gear 61, and the operating rocker 43 is joggled with the driving gear 44.

Referring to fig. 8, the catheter 10 includes a catheter hub 8 and a catheter body 9 fixedly connected to each other. The guide wire 11 passes into the lumen of the catheter body 9 through the lumen of the catheter hub 8 and extends out of the lumen of the catheter body 9.

Referring to fig. 8, the catheter anchor 30 is located on the side of the catheter hub 8 facing away from the catheter body 9, also between the catheter hub 8 and the guidewire anchor 34. Referring to fig. 3, one end of the catheter fixing member 30 is screwed to the first screw rod 46, and the other end of the catheter fixing member 30 extends along the Z-axis in the forward direction and is connected to the catheter hub 8. The other end of the catheter fixing element 30 is detachably connected with the catheter hub 8 so as to install the catheter and the guide wire together with the pushing device 100 and the catheter 10. In this embodiment, the catheter hub 8 is provided with a luer connector, and the luer connector is screwed to the catheter fixing member 30. In other embodiments, the other end of the catheter mount 30 may also snap into engagement with the catheter hub 8.

Referring to fig. 8, the process of installing the guide wire 11 on the catheter 10 and the catheter fixing member 30 is as follows: firstly, the guide wire 11 penetrates out of the catheter body 9 from the catheter seat 8 for a certain distance, then the guide wire 11 penetrates through the catheter fixing piece 30, and the luer connector on the catheter seat 88 is used for being in threaded connection with the catheter fixing piece 30.

Referring to fig. 9A, 9B and 9C, the guide wire fixing member 34 includes a screw cap 32, a clamping member 33 and a fixing seat 31 sequentially sleeved on the guide wire 11. One end of the clamping piece 33 is a movable end with a contractible radial dimension. The movable end of the clamping piece 33 is located on one side of the clamping piece 33 facing the screw cap 32, and a plurality of axial hollow grooves 35 are formed in the movable end of the clamping piece 33 along the circumferential direction. The movable end of the clamping member 33 is substantially frustoconical. The inner cavity of the screw cap 32 is provided with a taper hole. The movable end of the clamping piece 33 is arranged in the inner cavity of the screw cap 32. The other end of the clamping piece 33 is arranged in the inner cavity of the fixed seat 31. The fixing seat 31 is simultaneously screwed with the second screw rod 47. The screw cap 32 is in threaded connection with the fixed seat 31. In the process that the screw cap 32 is gradually screwed to connect the fixed seat 31, the screw cap 32 presses the movable end of the clamping member 33, so that the gap of the hollow groove 35 is reduced, and the radial dimension of the movable end of the clamping member 33 is reduced to clamp and fix the guide wire 11.

Referring to fig. 2 and fig. 3, the catheter and guide wire cooperative pushing device 100 further includes a first limiting member 461 and a second limiting member 471. The first limiting member 461 is connected to an end of the first screw 46 away from the first driven gear 61. The first limiting member 461 may be integrally formed with the first screw 46. The first limiting member 461 is disposed outside the housing 40. At least one first position-lock 462 is disposed on the first position-limiting member 461. The first end plate 402 is provided with a first elastic abutting member 51, and the first elastic abutting member 51 is clamped in the first clamping position 462.

Referring to fig. 2, the second limiting member 471 is connected to an end of the second screw 47 away from the second driven gear 62. The second limiting member 471 can be integrally formed with the second screw 47. The second limiting member 471 is disposed outside the housing 40.

Referring to fig. 10, at least one second locking position 472 is disposed on the second position-limiting member 471. The second end plate 402 is provided with a second resilient abutment 52. The second elastic abutting member 52 is engaged with the second engaging portion 472. The second detents 472 are arc grooves, the plurality of second detents 472 are disposed on the circumferential side surface of the second limiting member 471 in an arc transition manner, the second elastic abutting member 52 elastically abuts against the groove surface of the arc groove, so that when the second screw 47 rotates, the second elastic abutting member 52 is elastically deformed and easily falls off from the arc groove, and cannot block the rotation of the second screw 47, and when the second screw 47 stops rotating, the second elastic abutting member 52 is engaged with the second detents 472, so as to lock the position of the second screw 47.

In particular, the second resilient abutment 52 is a self-locking wire spring. The self-locking wire spring can be made of stainless steel, nickel titanium and the like. Wherein both ends of the second elastic abutting piece 52 are inserted into the insertion holes of the stepped surface of the second end plate 403. When the operator does not operate the driving assembly 20 or after the operation is stopped, the arc-shaped wire spring of the second elastic abutting member 52 is matched with the arc groove of the second limiting member 471, and the second elastic abutting member 52 provides a certain limiting force to the second limiting member 471, so that the second rotating assembly 23 cannot rotate, and the self-locking function after the guide wire 11 is pushed is realized.

When the operating rocker 43 is rotated to drive the second screw 47 and the second limiting member 471 to rotate, the second limiting member 471 deforms the circular arc wire spring of the elastic second abutting member 52 to disengage from the circular arc groove, so that the second limiting member 471 does not affect the normal rotation of the second rotating assembly 23.

The structure of the first limiting member 461 is the same as that of the second limiting member 471, and the structure of the first elastic abutting member 51 is the same as that of the second elastic abutting member 52, which is not described herein again. The first limiting member 461 and the first elastic abutting member 51 cooperate to stop the first screw rod 46 after the driving is finished, so that the catheter 10 stops moving, and the moving precision of the catheter 10 is improved, and the second limiting member 471 and the second elastic abutting member 52 cooperate to stop the second screw rod 47 after the driving is finished, so that the guide wire 11 stops moving, and the moving precision of the guide wire 11 is improved.

Referring to fig. 1, a first scale 93 and a second scale 94 are disposed on the outer circumferential surface of the housing 40. The first scale 93 and the second scale 94 are respectively disposed along edges of the first through groove 91 and the second through groove 92, and extend in an axial direction of the housing 40.

The first scale 93 may be provided on one side or both sides of the first through groove 91, and the second scale 94 may be provided on one side or both sides of the second through groove 92. The first scale 93 and the second scale 94 indicate the push distance. So as to prompt the operator of the pushing distance of the catheter 10 and the guide wire 11.

As shown in fig. 11, in actual vascular intervention, according to the general habits of the operator, the operator pushes the catheter 10 and the guide wire 11 directly into the blood vessel of the patient 110 by hand, so as to save the pushing time. When the distance between the distal ends (the end far away from the operator) of the catheter 10 and the guide wire 11 and the target position in the blood vessel is within about 10cm, the catheter 10 and the guide wire 11 are respectively fixed to the cooperative pushing device 100 for the catheter and the guide wire. The operator rotates the operating lever 43 clockwise.

As shown in fig. 12, in the target blood vessel 120, precise alternate pushing of the catheter 10 and the guide wire 11 is performed, which still conforms to the operation habit of the operator, and the pushing distance of the catheter 10 and the guide wire 11 can be precisely controlled, so as to ensure precise pushing of the catheter 10 and the guide wire 11 in the blood vessel occlusion section.

After reaching the target position of the blood vessel, the catheter 10 and the guide wire 11 can be quickly detached from the catheter and guide wire coordinated pushing device 100 by unscrewing the luer connector and the screw cap 32 on the catheter seat 88, so that the operator can quickly perform other treatment operations, and the operation time is shortened.

Referring to fig. 1 and 2, a catheter and guidewire cooperative pushing system 200 is provided according to an embodiment of the present invention. The catheter and guide wire cooperative pushing system comprises a guide wire 11, a catheter 10 and the catheter and guide wire cooperative pushing device 100 according to any one of the above embodiments. The catheter 10 comprises a catheter hub 8 and a catheter body 9 which are fixedly connected. A portion of the guidewire 11 is threaded through the lumen of the catheter hub 8 and the lumen of the catheter body 9.

One end of the catheter fixing member 30 of the catheter guide wire cooperating with the pushing device 100 is sleeved on the guide wire 11 and fixedly connected to the catheter seat 8, so that the catheter fixing member 30 can drive the catheter 10 to move. The catheter fixing member 30 is fixed to the catheter hub 8 in a detachable manner. The catheter and the guide wire cooperate with the guide wire fixing member 34 of the pushing device 100 to be fixedly connected with the portion of the guide wire 11, which is arranged outside the catheter 10, so that the guide wire fixing member 34 can drive the guide wire 11 to move. The guide wire fixing member 34 is fixed to the guide wire 11 in a detachable manner. The catheter and guide wire cooperate with the driving assembly 20 of the pushing device 100 to move by driving the catheter fixing member 30 and the guide wire fixing member 34 so as to push the guide wire 11 and the catheter 10 to cooperate with alternate movement or synchronous movement.

The utility model provides a pipe seal wire is propelling movement system 200 in coordination is through connecting first rotating assembly 22 in drive assembly 20 with between seal wire mounting 34, and set up second rotating assembly 23 and connect in between drive assembly 20 and pipe mounting 30, when drive assembly 20 drive first rotating assembly 22 and second rotating assembly 23, first rotating assembly 22 and second rotating assembly 23 can drive seal wire mounting 34 and pipe mounting 30 alternating motion or synchronous motion respectively, and then drive seal wire 11 and pipe 10 alternating motion or synchronous motion, realize alternately or synchronous propelling movement seal wire 11 and pipe 10, effectively improve propelling movement efficiency; the guide wire 11 and the catheter 10 can be pushed cooperatively through one driving assembly 20, so that the number of parts is reduced, and the device has the advantages of simple structure, small size and the like; the catheter and guide wire in the catheter and guide wire coordinated pushing system 200 can be conveniently and quickly assembled and disassembled between the catheter fixing part 34 and the catheter 10, and the guide wire fixing part 30 and the guide wire 11, so that the operation time can be shortened; moreover, the pushing of the catheter 10 and the guide wire 11 is more accurate than the pushing of the conventional handheld guide wire 11 and the catheter 10.

The foregoing are some embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A catheter-guidewire cooperative pusher for pushing a catheter and a guidewire partially disposed through the catheter, comprising:

the catheter fixing piece is fixedly connected with the catheter;

a drive assembly; and

2. The catheter guidewire cooperative pushing device according to claim 1, further comprising a drive gear coupled to the drive assembly; the second rotating assembly comprises a first driven gear and a first screw rod coaxially connected with the first driven gear, and the second rotating assembly comprises a second driven gear and a second screw rod coaxially connected with the second driven gear; the first screw is in threaded connection with the catheter fixing piece, and the second screw is in threaded connection with the guide wire fixing piece;

the first driven gear and the second driven gear are oppositely arranged on two sides of the driving gear, teeth on the driving gear are meshed with teeth on the first driven gear, and teeth on the driving gear are meshed with teeth on the second driven gear; the driving gear is used for rotating under the action of the driving assembly and driving the first driven gear and the second driven gear to reversely rotate, so that the first screw rod and the second screw rod reversely rotate and drive the catheter fixing piece and the guide wire fixing piece to alternately or synchronously move along the same direction.

3. The catheter guidewire cooperative pushing device according to claim 2, wherein the helical direction of the second screw is opposite to the helical direction of the first screw.

4. The catheter guidewire co-pusher of claim 3, wherein an axis of the first driven gear and an axis of the second driven gear are collinear, and an axial direction of the drive gear is perpendicular to an axial direction of the first driven gear and an axial direction of the second driven gear.

5. The catheter guidewire co-pusher of claim 4, wherein the drive gear, the first driven gear, and the second driven gear are all bevel gears; or, the driving gear is a straight spur gear, and the first driven gear and the second driven gear are both side gears.

6. The catheter guidewire co-pusher of claim 4, wherein the drive gear circumferentially includes a scalloped portion having continuous teeth and a smooth portion not having a scalloped portion, the second driven gear disengaging from the scalloped portion when the scalloped portion is rotated into engagement with the first driven gear; when the serration is rotated to be engaged with the second driven gear, the first driven gear is separated from the serration.

7. The catheter guidewire co-pusher of claim 6, wherein the smooth surface portion extends over a circumference of the drive gear that is greater than 2/3 revolutions of the drive gear.

8. The catheter guidewire co-pusher of any one of claims 2-7, further comprising a housing having an inner lumen, the first rotating assembly and the second rotating assembly being disposed within the inner lumen of the housing; the guide wire and the catheter are arranged outside the shell and extend along the axial direction of the shell, and the driving assembly is arranged in the shell or partially arranged outside the shell.

9. The catheter guidewire co-pusher of claim 8, wherein the housing has a peripheral side surface provided with a first through slot and a second through slot communicating the inner cavity of the housing with a space outside the housing; one end of the catheter fixing piece is in threaded connection with the first screw rod, and the other end of the catheter fixing piece extends out of the first through groove and is fixedly connected with the catheter; one end of the guide wire fixing piece is in threaded connection with the second screw rod, and the other end of the guide wire fixing piece extends out of the second through groove and is fixedly connected with the guide wire.

10. The catheter guidewire co-pusher of claim 8, wherein the outer housing comprises a main body shell having a hollow cylindrical shape and a first end plate disposed at one end of the main body shell, the first end plate having a first mounting hole; the inner wall of the main body shell is provided with a first mounting plate which is arranged opposite to the first end plate, the first mounting plate is provided with a second mounting hole, two ends of the first screw rod respectively penetrate through the first mounting hole and the second mounting hole, and the first screw rod is limited between the first end plate and the first mounting plate;

the shell is still including locating the second end plate of the other end of main part shell, the second end plate has the third mounting hole, the inner wall of main part shell be equipped with the relative second mounting panel that sets up of second end plate, be equipped with the fourth mounting hole on the second mounting panel, the both ends of second screw rod run through respectively the third mounting hole with the fourth mounting hole, just the second screw rod spacing in the second end plate with between the second mounting panel.

11. The catheter guidewire co-pusher of claim 10, wherein the first mounting plate, the second mounting plate, and an inner wall of the housing define an accommodating space therebetween, and wherein the drive gear, the first driven gear, and the second driven gear are disposed within the accommodating space.

12. The catheter guidewire cooperative pushing device of claim 10, further comprising a first stop and a second stop;

the first limiting piece is connected to one end, far away from the first driven gear, of the first screw rod, the first limiting piece is arranged outside the shell, at least one first clamping position is arranged on the first limiting piece, a first elastic abutting piece is arranged on the first end plate, and the first elastic abutting piece is clamped in the first clamping position;

the second locating part connect in the second screw rod is kept away from the one end of second driven gear, the second locating part is located outside the shell, be equipped with at least one second screens on the second locating part, be equipped with second elasticity butt piece on the second end board, second elasticity butt piece joint in the second screens.

13. The catheter guidewire cooperative pushing device according to claim 9, wherein a first scale and a second scale are provided on the peripheral side of the housing, and the first scale and the second scale are respectively provided along the edges of the first through groove and the second through groove and extend in the axial direction of the housing.

14. The catheter guidewire co-pusher of claim 8, wherein the drive assembly includes an operating rocker having one end extending into the interior chamber of the housing and coupled to the drive gear to drive the drive gear in rotation.

15. The catheter guidewire cooperative pushing device according to claim 8, wherein the driving assembly comprises a motor disposed inside or outside the housing, and a rotating shaft of the motor is connected to the driving gear to drive the driving gear to rotate.

16. The catheter and guide wire cooperative pushing device as claimed in claim 1, wherein the guide wire fixing member comprises a rotary cover, a clamping member and a fixing base, the rotary cover, the clamping member and the fixing base are sequentially sleeved on the guide wire, one end of the clamping member is a movable end with a retractable radial dimension, the movable end of the clamping member is arranged in an inner cavity of the rotary cover, the other end of the clamping member is arranged in an inner cavity of the fixing base, the fixing base is connected with the second rotating assembly, and when the rotary cover is fixedly connected to the fixing base, the rotary cover presses the movable end, so that the radial dimension of the movable end is reduced and the guide wire is clamped.

17. A catheter and guide wire cooperative pushing system, which comprises a guide wire, a catheter and the catheter and guide wire cooperative pushing device according to any one of claims 1 to 16, wherein the catheter is fixedly connected to the catheter fixing member, the guide wire is partially inserted into the catheter, and the part of the guide wire outside the catheter is fixedly connected to the guide wire fixing member.