CN215306093U

CN215306093U - Catheter control handle

Info

Publication number: CN215306093U
Application number: CN202120743612.5U
Authority: CN
Inventors: 邹鼎鼎; 刘斌; 胡军
Original assignee: Sonosemi Medical Co Ltd
Current assignee: Sonosemi Medical Co Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-12-28
Anticipated expiration: 2031-04-12

Abstract

The utility model relates to the technical field of ultrasonic catheter imaging, and provides a catheter control handle which is used for driving an ultrasonic probe to deflect towards different directions through a traction piece, wherein the traction piece comprises a first traction wire and a second traction wire, and the catheter control handle comprises: the handle comprises a handle body, wherein a handle shaft is arranged on the handle body; the first rotating piece is rotatably arranged on the handle shaft, one end of each of the first traction wire and the second traction wire is connected with the first rotating piece, and the other end of each of the first traction wire and the second traction wire is connected with the ultrasonic probe; the first rotating member can rotate on the handle shaft in two opposite directions, so that the first traction wire and the second traction wire drive the ultrasonic probe to deflect in different directions. The catheter control handle is simple in structure, low in cost and convenient to adjust the posture of the ultrasonic probe.

Description

Catheter control handle

Technical Field

The utility model relates to the technical field of ultrasonic catheter imaging, in particular to a catheter control handle.

Background

Intracardiac echocardiography (ICE) is a new echocardiography diagnosis technology combined with cardiac catheterization, and is increasingly becoming an important tool for diagnosing and treating heart abnormalities such as endocarditis, Atrial Septal Defects (ASD), Patent Foramen Ovale (PFO), Ventricular Septal Defects (VSD) and the like by virtue of the advantages of small discomfort, few complications, simple and convenient operation, real time, short relative learning curve, no radiation and no air interference. In three-dimensional imaging using intracardiac ultrasound, a catheter in the intracardiac ultrasound may place an ultrasound probe at a distal end portion thereof in an atrium of a heart of a patient, and a doctor observes a treatment site through the ultrasound probe while positioning a treatment device at the treatment site to treat the patient. Because the lesion positions of different patients are different and a plurality of positions in the heart cavity need to be detected, a control handle is required to be arranged at the proximal end part of the catheter to flexibly control the ultrasonic catheter, so that the ultrasonic probe at the distal end part of the catheter is in different postures, and different positions can be observed conveniently. And because the operation environment requires asepsis, the control handle can be preferably disposable with simple structure and low cost.

The existing control handle enables the ultrasonic probe to deflect towards different directions by a traction piece in the pipe wall of the control handle traction catheter, so as to adjust the posture of the ultrasonic probe, but the existing control handle is complex in structure and high in cost, and is complex to operate when the posture of the ultrasonic probe is adjusted, so that the control is very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model provides a catheter control handle, which aims to solve the problems that the traditional control handle is complex in structure, high in cost and complex to operate when the posture of an ultrasonic probe is adjusted.

The embodiment of the application provides a catheter control handle for drive ultrasonic probe through drawing the piece and deflect to different directions, it includes first pull wire and second pull wire to draw the piece, catheter control handle includes:

the handle comprises a handle body, wherein a handle shaft is arranged on the handle body;

the first rotating piece is rotatably arranged on the handle shaft, one end of each of the first traction wire and the second traction wire is connected with the first rotating piece, and the other end of each of the first traction wire and the second traction wire is connected with the ultrasonic probe;

the first rotating member can rotate on the handle shaft in two opposite directions, so that the first traction wire and the second traction wire drive the ultrasonic probe to deflect in different directions.

In some embodiments, the pulling element further comprises a third pulling wire and a fourth pulling wire, the tube control handle further comprises a second rotating element, the second rotating element is rotatably disposed on the handle shaft, one end of each of the third pulling wire and the fourth pulling wire is connected with the second rotating element, the other end of each of the third pulling wire and the fourth pulling wire is connected with the ultrasonic probe, and the second rotating element can be used for turning the handle in two opposite directions on the handle shaft, so that the third pulling wire and the fourth pulling wire drive the ultrasonic probe to deflect in different directions.

In some embodiments, a first branch shaft and a second branch shaft are arranged on the handle shaft, the first traction wire and the second traction wire are connected with the first rotating member after being guided by the first branch shaft, and the third traction wire and the fourth traction wire are connected with the second rotating member after being guided by the second branch shaft.

In some embodiments, a cable wheel frame is further arranged on the handle shaft and arranged between the first rotating member and the second rotating member, a sliding groove is arranged on the handle shaft along the axial direction of the handle shaft, a first sliding block is arranged on the wire wheel carrier and is inserted into the sliding groove in a sliding manner, the wire wheel frame is provided with a first winding post and a second winding post, the first traction wire is connected with the first rotating part after being guided by the first split shaft and the first winding post in sequence, the second traction wire is connected with the first rotating piece after being sequentially guided by the first split shaft and the second winding post, the third traction wire is connected with the second rotating part after being sequentially guided by the second wire dividing shaft and the first winding post, the fourth traction wire is connected with the second rotating part after sequentially passing through the second wire dividing shaft and the second winding post in a guiding mode.

In some embodiments, the reel frame is provided with a first protrusion, the first rotating member is provided with a first recess, and the first protrusion is rotatably arranged in the first recess to limit the rotation angle of the first rotating member; the wire wheel frame is provided with a second protruding part, the second rotating part is provided with a second sunken part, and the second protruding part is arranged in the second sunken part to limit the rotating angle of the second rotating part.

In some embodiments, an insertion hole for inserting a catheter is formed in the handle shaft, the sliding groove is formed in a hole wall of the insertion hole, the first traction wire and the second traction wire are connected with the first rotating member after sequentially passing through the insertion hole and the sliding groove, and the third traction wire and the fourth traction wire are connected with the second rotating member after sequentially passing through the insertion hole and the sliding groove.

In some of these embodiments, catheter control handle still includes locking Assembly, locking Assembly includes and is in stop piece, latch segment, retaining member and the adjusting washer that set gradually on the handle axle, the retaining member rotationally sets up on the handle axle, stop the piece fixed setting on the handle axle, first rotation piece with the second rotation piece all sets up stop with between the latch segment, the adjusting washer presss from both sides and establishes handle body with between the retaining member, through rotating towards different directions the retaining member, can make the retaining member lock or loosen first rotation piece with the second rotates the piece.

In some embodiments, the locking block is slidably disposed on the handle shaft, a second slider is disposed on the locking block, the second slider is slidably inserted into the sliding groove, a side surface of the locking member close to the locking block contacts with the first rotating member and is provided with a locking groove, the locking block is disposed in the locking groove, a groove bottom surface of the locking groove is provided with a first spiral inclined surface, a side surface of the locking block close to the locking member is provided with a second spiral inclined surface adapted to the first spiral inclined surface, the first spiral inclined surface and the second spiral inclined surface can be attached to each other by rotating the locking member in a first direction, and the locking member releases the first rotating member and the second rotating member; the first spiral inclined plane and the second spiral inclined plane are spaced by rotating the locking piece towards the second direction, the locking piece locks the first rotating piece and the second rotating piece, and the first direction and the second direction are opposite.

In some embodiments, a third protrusion is disposed on a side of the locking block close to the locking member, and a third recess is disposed on the locking member, and the third protrusion is slidably disposed in the third recess to limit a rotation angle of the locking member.

In some embodiments, the catheter control handle further comprises a shaft sleeve for fitting over an end of the catheter proximal to the handle body.

The utility model has the beneficial effects that: the utility model provides a catheter control handle includes the handle body and rotationally sets up the first rotating member on the handle body, first traction wire and second traction wire all are connected with first rotating member, therefore, through rotatory first rotating member on the handle axle correspondingly make first traction wire and second traction wire drive ultrasonic probe towards different directions deflection, moreover, the steam generator is simple in structure, the operation is convenient, and the cost is lower, it is complicated to have solved traditional brake valve lever structure, the cost is higher, and the operation is complicated when the gesture of adjusting ultrasonic probe, control very trouble problem.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions 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 to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of an assembled configuration of a catheter control handle according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of the catheter control handle of FIG. 1;

FIG. 3 is a schematic structural view of a first split shaft, a second split shaft and a line wheel frame in one embodiment of the utility model;

FIG. 4 is a cross-sectional view of the structure shown in FIG. 2;

FIG. 5 is an enlarged partial view of portion A of FIG. 1;

FIG. 6 is an enlarged partial view of the area B in FIG. 1;

fig. 7 is a schematic view of the structure of the retaining member in one embodiment of the present invention.

The designations in the figures mean:

100. a catheter control handle; 10. a handle body; 11. a handle shaft; 111. inserting holes; 112. a chute; 113. a shaft hole; 20. a first rotating member; 21. a first rotating ring; 211. a limiting block; 22. a first rotating block; 23. a first recess; 24. a first wire tying post; 25. a limiting groove; 30. a second rotating member; 31. a second rotating ring; 32. a second turning block; 33. a second recess; 34. a second wire binding post; 40. a line dividing shaft; 41. a first shunt axis; 42. a second branch shaft; 50. a wire wheel frame; 51. a first winding post; 52. a second winding post; 53. a first projecting portion; 54. a second projection; 55. a first slider; 60. a locking assembly; 61. a blocking member; 611. a retainer ring for a shaft; 612. a top cover; 62. a locking block; 621. a second helical ramp; 622. a third projecting portion; 623. a second slider; 63. a locking member; 631. a first helical ramp; 632. a third recessed portion; 633. a locking groove; 64. an adjusting washer; 70. a shaft sleeve; 200. a conduit; 300. a traction member; 310. a first pull wire; 320. a second pull wire; 330. a third traction wire; 340. and a fourth traction wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, which are examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In order to explain the technical solution of the present invention, the following description is made with reference to the specific drawings and examples.

Referring to fig. 1, 2 and 3, the present application provides a catheter control handle 100 for driving an ultrasonic probe to deflect in different directions through a pulling element 300, wherein the pulling element 300 includes a first pulling wire 310 and a second pulling wire 320, and the first pulling wire 310 and the second pulling wire 320 are both disposed in a wall of a catheter 200.

The catheter control handle 100 comprises a handle body 10 and a first rotating member 20, wherein a handle shaft 11 is arranged on the handle body 10, the handle body 10 is used for holding when in use, the handle shaft 11 is used for connecting the catheter 200 and other components, and an ultrasonic probe is arranged at the other end of the catheter 200.

The first rotating member 20 is rotatably arranged on the handle shaft 11, one end of each of the first traction wire 310 and the second traction wire 320 is connected with the first rotating member 20, and the other end is connected with the ultrasonic probe; the first rotating member 20 can rotate on the handle shaft 11 in two opposite directions, so that the first traction wire 310 and the second traction wire 320 respectively drive the ultrasonic probe to deflect in different directions, that is, the first rotating member 20 rotates on the handle shaft 11 in different directions, the first traction wire 310 or the second traction wire 320 can be pulled, the ultrasonic probe is driven to deflect in different directions, and in order to enlarge the deflection range of the ultrasonic probe, the first traction wire 310 and the second traction wire 320 are symmetrically arranged relative to the axis of the handle shaft 11, so that the ultrasonic probe can be driven to deflect in opposite directions.

The embodiment of the utility model provides a catheter control handle 100, which is used for driving an ultrasonic probe to deflect in different directions through a traction piece 300, can be used in the technical field of ultrasonic imaging in the heart, can correspondingly drive the ultrasonic probe to deflect in different directions through a first traction wire 310 and a second traction wire 320 by rotating a first rotating piece 20 on a handle shaft 11, and has the advantages of simple structure, convenience in operation, lower cost, capability of being used as a disposable instrument and reduction of cross contamination in the operation process. The problem of traditional control handle structure complicacy, the cost is higher, and the operation is complicated when the gesture of adjustment ultrasonic probe has been solved in this application.

Referring to fig. 2, fig. 3 and fig. 5, optionally, the first rotating member 20 includes a first rotating ring 21 and a first rotating block 22, the first rotating block 22 is rotatably sleeved on the handle shaft 11, the first rotating ring 21 is sleeved on the first rotating block 22, a limiting groove 25 is disposed on an outer edge of the first rotating block 22, a limiting block 211 is disposed on an inner wall of the first rotating ring 21, the limiting block 211 is inserted into the limiting groove 25 in a matching manner to prevent the first rotating ring 21 and the first rotating block 22 from rotating relatively, and by providing the first rotating ring 21 and the first rotating block 22, the entire first rotating member 20 is conveniently rotated by the first rotating ring 21.

The first traction wire 310 and the second traction wire 320 are both connected with the first rotating ring 21, or the first traction wire 310 and the second traction wire 320 are both connected with the first rotating block 22, specifically, two first binding posts 24 are arranged on the edge of the first rotating block 22, and the first traction wire 310 and the second traction wire 320 are respectively bound on the different first binding posts 24.

Referring again to fig. 2, 3 and 5, in some embodiments, the pulling member 300 further includes a third pulling wire 330 and a fourth pulling wire 340, the third pulling wire 330 and the fourth pulling wire 340 are both disposed in the wall of the catheter 200, the catheter control handle 100 further includes a second rotating member 30, the second rotating member 30 is rotatably disposed on the handle shaft 11, one end of each of the third pulling wire 330 and the fourth pulling wire 340 is connected to the second rotating member 30, the other end of each of the third pulling wire 330 and the fourth pulling wire 340 is connected to the ultrasonic probe, the second rotating member 30 can rotate on the handle shaft 11 in different directions, accordingly, the third pulling wire 330 and the fourth pulling wire 340 respectively drive the ultrasonic probe to deflect in different directions, that is, by rotating the second rotating member 30 on the handle shaft 11 in different directions, the third pull wire 330 or the fourth pull wire 340 can be pulled, so as to drive the ultrasonic probe to deflect in different directions.

In order to enlarge the deflection range of the ultrasonic probe, the first traction wire 310, the third traction wire 330, the second traction wire 320 and the fourth traction wire 340 are sequentially arranged along the circumferential direction of the handle shaft 11 at uniform intervals, the deflection postures of the ultrasonic probe in four directions can be adjusted, wherein the first traction wire 310 and the second traction wire 320 respectively control the pitching adjustment of the ultrasonic probe, the pitching adjustment of the ultrasonic probe can be controlled by rotating the first rotating member 20, the left-right adjustment of the ultrasonic probe can be controlled by respectively rotating the third traction wire 330 and the fourth traction wire 340, and the pitching adjustment of the ultrasonic probe can be controlled by rotating the second rotating member 30. It is appreciated that in another embodiment, the first pull wire and the second pull wire may control the left and right adjustment of the ultrasound probe, respectively, and the third pull wire 330 and the fourth pull wire 340 may control the pitch adjustment of the ultrasound probe, respectively.

Optionally, the second rotating member 30 includes a second rotating ring 31 and a second rotating block 32, the second rotating block 32 is rotatably sleeved on the handle shaft 11, the second rotating ring 31 is sleeved on the second rotating block 32, similarly to the first rotating member 20, a limiting groove 25 is also provided at an outer edge of the second rotating block 32, a limiting block 211 is provided on an inner wall of the second rotating ring 31, the limiting block 211 is fittingly inserted into the limiting groove 25 to prevent the second rotating ring 31 and the second rotating block 32 from rotating relatively, by providing the second rotating ring 31 and the second rotating block 32, it is convenient to rotate the entire second rotating member 30 through the second rotating ring 31, the third traction wire 330 and the fourth traction wire 340 are both connected with the second rotating ring 31, or the third traction wire 330 and the fourth traction wire 340 are both connected with the second rotating block 32, specifically, two second binding posts 34 are provided at an edge of the second rotating block 32, the third traction wire 330 and the fourth traction wire 340 are respectively bound to different first binding posts 24.

Referring to fig. 2, 3 and 6, in some embodiments, in order to prevent entanglement among the first, second and

third traction wires

310, 320, 330 and 340, a split shaft 40 is disposed on the handle shaft 11, the split shaft 40 includes a first split shaft 41 and a second split shaft 42, the first and

second traction wires

310, 320 are connected to the first rotating member 20 after being guided by the first split shaft 41, and the third and

fourth traction wires

330, 340 are connected to the second rotating member 30 after being guided by the second split shaft 42, so as to separate the first, second and

third traction wires

310, 320, 330 and 340 and prevent them from being entangled with each other, specifically, as shown in fig. 6, two shaft holes 113 are disposed on the handle shaft 11, and the first and

second split shafts

41, 42 are respectively inserted into the different shaft holes 113.

Referring to fig. 1 to 6, in some embodiments, in order to further separate the first traction wire 310, the second traction wire 320, the third traction wire 330 and the fourth traction wire 340 and prevent the first traction wire, the second traction wire 320, the third traction wire 330 and the fourth traction wire 340 from being twisted with each other, the handle shaft 11 is further provided with a wire wheel frame 50, the wire wheel frame 50 is disposed between the first rotating member 20 and the second rotating member 30, the handle shaft 11 is provided with a sliding slot 112 along an axial direction thereof, the wire wheel frame 50 is provided with a first sliding block 55, and the first sliding block 55 is slidably inserted into the sliding slot 112 so as to prevent the wire wheel frame 50 from rotating on the handle shaft 11, but the wire wheel frame 50 can still slide on the handle shaft 11 along the sliding slot 112. The reel frame 50 is provided with a first winding post 51 and a second winding post 52, the first traction wire 310 sequentially passes through the first split shaft 41 and is connected with the first rotating member 20 after being guided by the first winding post 51, the second traction wire 320 sequentially passes through the first split shaft 41 and is connected with the first rotating member 20 after being guided by the second winding post 52, the third traction wire 330 sequentially passes through the second split shaft 42 and is connected with the second rotating member 30 after being guided by the first winding post 51, and the fourth traction wire 340 sequentially passes through the second split shaft 42 and is connected with the second rotating member 30 after being guided by the second winding post 52, so that the first traction wire 310, the second traction wire 320, the third traction wire 330 and the fourth traction wire 340 are all separated independently, and further mutual winding of the first traction wire 310, the second traction wire 320, the third traction wire 330 and the fourth traction wire 340 is avoided.

Referring to fig. 2 and 5, in some embodiments, in order to prevent the first rotating member 20 from rotating too much, the first traction wire 310 or the second traction wire 320 is pulled too long, which may cause the serpentine bone in the catheter 200 to be bent too much and damaged, the wire wheel frame 50 is provided with a first protrusion 53, the first rotating member 20 is provided with a first recess 23, and the first protrusion 53 is rotatably disposed in the first recess 23 to limit the rotating angle of the first rotating member 20; similarly, in order to prevent the second rotating member 30 from rotating too much, and the third traction wire 330 or the fourth traction wire 340 is pulled too long, which may cause the snake bone in the guide tube 200 to be bent too much and damaged, the wire wheel frame 50 is provided with a second protrusion 54, the second rotating member 30 is provided with a second recess 33, and the second protrusion 54 is arranged in the second recess 33 to limit the rotation angle of the second rotating member 30.

Referring to fig. 2 and 6, in some embodiments, in order to make the structure of the catheter control handle 100 more compact, an insertion hole 111 for inserting the catheter 200 is formed in the handle shaft 11, the catheter 200 is adhered in the insertion hole 111 of the handle shaft 11 by an adhesive, the sliding groove 112 is formed in a wall of the insertion hole 111, the first traction wire 310 and the second traction wire 320 are connected to the first rotating member 20 after sequentially passing through the insertion hole 111 and the sliding groove 112, and the third traction wire 330 and the fourth traction wire 340 are connected to the second rotating member 30 after sequentially passing through the insertion hole 111 and the sliding groove 112.

Referring to fig. 2, 4 and 6, in some embodiments, in order to prevent the ultrasonic probe from being randomly shaken when the ultrasonic probe is pulled by the pulling member 300 after the deflection posture of the ultrasonic probe is adjusted, the catheter control handle 100 further includes a locking assembly 60, the locking assembly 60 includes a blocking member 61, a locking block 62, a locking member 63 and an adjusting washer 64 which are sequentially disposed on the handle shaft 11, the locking member 63 is rotatably disposed on the handle shaft 11, the blocking member 61 is fixedly disposed on the handle shaft 11, the first rotating member 20 and the second rotating member 30 are both disposed between the blocking member 61 and the locking block 62, the first rotating member 20 and the second rotating member 30 are disposed in contact, the second rotating member 30 and the blocking member 61 are disposed in contact, the adjusting washer 64 is interposed between the handle body 10 and the locking member 63 and has a telescopic property, and the locking member 63 is rotated in different directions, so that the locking member 63 can lock or unlock the first rotating member 20 and the second rotating member 30, thereby preventing the ultrasonic probe from shaking randomly.

Referring to fig. 2, 4, 6 and 7, in some embodiments, the locking block 62 is slidably disposed on the handle shaft 11, the locking block 62 is provided with a second slider 623, the second slider 623 is slidably inserted into the sliding slot 112, so that the locking block 62 can slide on the handle shaft 11 but cannot rotate on the handle shaft 11, a side surface of the locking member 63 close to the locking block 62 contacts with the first rotating member 20 and is provided with a locking groove 633, the locking block 62 is disposed in the locking groove 633, a bottom surface of the locking groove 633 is provided with a first spiral inclined surface 631, and a side surface of the locking block 62 close to the locking member 63 is provided with a second spiral inclined surface 621 matching with the first spiral inclined surface 631.

The first spiral inclined surface 631 and the second spiral inclined surface 621 are engaged by rotating the locking member 63 in the first direction, and the locking member 63 releases the adjustment washer 64, so that the contact pressure of the locking member 63, the first rotating member 20 and the second rotating member 30 is reduced, and the damping between the locking member 63, the first rotating member 20 and the second rotating member 30 is reduced, so that the locking member 63 releases the first rotating member 20 and the second rotating member 30, and the first rotating member 20 and the second rotating member 30 can freely rotate; the first spiral inclined surface 631 and the second spiral inclined surface 621 are spaced by rotating the locking member 63 in the second direction, the locking member 63 presses the adjusting washer 64, the contact pressure between the locking member 63, the first rotating member 20 and the second rotating member 30 is increased, and the damping between the locking member 63, the first rotating member 20 and the second rotating member 30 is increased, so that the locking member 63 locks the first rotating member 20 and the second rotating member 30, the first rotating member 20 and the second rotating member 30 cannot rotate freely, and the situation that the traction member 300 pulls the ultrasonic probe to shake freely after the deflection posture of the ultrasonic probe is adjusted is prevented, wherein the first direction and the second direction are opposite.

Optionally, in order to facilitate adjustment of the distances between the first rotating member 20, the second rotating member 30 and the locking assembly 60 and to facilitate machining and installation of the entire device, washers are disposed between the first rotating member 20 and the second rotating member 30, between the first rotating member 20 and the locking member 63, and between the second rotating member 30 and the blocking member 61.

Referring to fig. 6 and 7, in some embodiments, a third protrusion 622 is disposed on a side of the locking block 62 close to the locking member 63, a third recess 632 is disposed on the locking member 63, and the third protrusion 622 is slidably disposed in the third recess 632 to limit a rotation angle of the locking member 63, so as to prevent the first rotating member 20 or the locking block 62 from being damaged due to over-pressing caused by an over-rotation angle of the locking member 63.

In some embodiments, the catheter control handle 100 further includes a shaft sleeve 70, and the shaft sleeve 70 is used to be sleeved on one end of the catheter 200 close to the handle body 10 to protect the catheter 200 from being broken due to excessive bending under large stress.

Referring to fig. 1 to 7, an embodiment of the present application provides a catheter control handle 100 for driving an ultrasonic probe to deflect in different directions through a traction member 300, wherein the traction member 300 includes a first traction wire 310, a second traction wire 320, a third traction wire 330, and a fourth traction wire 340, and the catheter control handle 100 includes a handle body 10, a first rotating member 20, a second rotating member 30, a reel 50, and a locking assembly 60 for adjusting a deflection posture of the ultrasonic probe.

The handle body 10 is provided with a handle shaft 11, the handle body 10 is used for holding when in use, the handle shaft 11 is provided with an insertion hole 111 for inserting the conduit 200 for connecting the conduit 200, the conduit 200 is adhered in the insertion hole 111 of the handle shaft 11 through quick-drying glue, a shaft sleeve 70 is sleeved on one end of the conduit 200 close to the handle body 10 to protect the conduit 200 from being excessively bent and broken under large stress, a sliding chute 112 is arranged on the sliding chute 112 on the wall of the insertion hole 111, a first traction wire 310 and a second traction wire 320 are connected with a first rotating part 20 after sequentially passing through the insertion hole 111 and the sliding chute 112, a third traction wire 330 and a fourth traction wire 340 are connected with a second rotating part 30 after sequentially passing through the insertion hole 111 and the sliding chute 112, the structure is compact, the handle shaft 11 is further provided with a branching shaft 40, the branching shaft 40 comprises a first branching shaft 41 and a second branching shaft 42, for guiding the first traction wire 310, the second traction wire 320, the third traction wire 330 and the fourth traction wire 340 separately.

The first rotating member 20 comprises a first rotating ring 21 and a first rotating block 22, the first rotating block 22 is rotatably sleeved on the handle shaft 11, the first rotating ring 21 is sleeved on the first rotating block 22, a limiting groove 25 is arranged at the outer edge of the first rotating block 22, a limiting block 211 is arranged on the inner wall of the first rotating ring 21, the limiting block 211 is inserted into the limiting groove 25 in a matching manner to prevent the first rotating ring 21 and the first rotating block 22 from rotating relatively, by providing the first rotating ring 21 and the first rotating block 22, it is convenient to rotate the entire first rotating member 20 by the first rotating ring 21, the first traction wire 310 and the second traction wire 320 are both connected to the first rotating ring 21, or, the first traction wire 310 and the second traction wire 320 are both connected with the first rotating block 22, specifically, two first binding posts 24 are arranged at the edge of the first rotating block 22, and the first traction wire 310 and the second traction wire 320 are respectively bound on different first binding posts 24.

The second rotating member 30 includes a second rotating ring 31 and a second rotating block 32, the second rotating block 32 is rotatably sleeved on the handle shaft 11, the second rotating ring 31 is sleeved on the second rotating block 32, similarly to the first rotating member 20, a limiting groove 25 is also arranged at an outer edge of the second rotating block 32, a limiting block 211 is arranged on an inner wall of the second rotating ring 31, the limiting block 211 is inserted into the limiting groove 25 in a matching manner to prevent the second rotating ring 31 and the second rotating block 32 from rotating relatively, by arranging the second rotating ring 31 and the second rotating block 32, the entire second rotating member 30 is conveniently rotated by the second rotating ring 31, the third traction wire 330 and the fourth traction wire 340 are both connected with the second rotating ring 31, or the third traction wire 330 and the fourth traction wire 340 are both connected with the second rotating block 32, specifically, two second binding posts 34 are arranged at an edge of the second rotating block 32, the third traction wire 330 and the fourth traction wire 340 are respectively bound to different first binding posts 24.

Through rotating the second rotation piece 30 toward different directions on handle axle 11, can pull third traction wire 330 or fourth traction wire 340, and then drive ultrasonic probe respectively and deflect towards different directions, in order to enlarge ultrasonic probe's deflection scope, first traction wire 310, third traction wire 330, second traction wire 320 and fourth traction wire 340 set gradually along the even interval in circumference of handle axle 11, can adjust ultrasonic probe at the gesture of deflecting of four directions.

The spool frame 50 is disposed between the first rotating member 20 and the second rotating member 30, the spool frame 50 is provided with a first slider 55, the first slider 55 is slidably inserted into the sliding groove 112, so as to prevent the spool frame 50 from rotating on the handle shaft 11, but the spool frame 50 can still slide on the handle shaft 11, the spool frame 50 is provided with a first winding post 51 and a second winding post 52, the first traction wire 310 is connected with the first rotating member 20 after being sequentially guided by the first split shaft 41 and the first winding post 51, the second traction wire 320 is connected with the first rotating member 20 after being sequentially guided by the first split shaft 41 and the second winding post 52, the third traction wire 330 is connected with the second rotating member 30 after being sequentially guided by the second split shaft 42 and the first winding post 51, the fourth traction wire 340 is connected with the second rotating member 30 after being sequentially guided by the second split shaft 42 and the second winding post 52, so that the first traction wire 310, the second winding post, and the second traction wire 52 are connected with the second rotating member 20, The second traction wire 320, the third traction wire 330 and the fourth traction wire 340 are all separated independently, so that the mutual winding of the traction wires is avoided, and the influence on the normal use of the catheter control handle 100 is avoided.

The locking assembly 60 comprises a blocking part 61, a locking block 62, a locking part 63 and an adjusting washer 64 which are sequentially arranged on a handle shaft 11, the locking part 63 is rotatably arranged on the handle shaft 11, the blocking part 61 is fixedly arranged on the handle shaft 11, the first rotating part 20 and the second rotating part 30 are both arranged between the blocking part 61 and the locking block 62, the blocking part 61 comprises a top cover 612 and a shaft retainer ring 611, the adjusting washer 64, the locking part 63, the locking block 62, the first rotating part 22, the reel 50 and the second blocking part are sequentially sleeved on the handle shaft 11 and are limited by the shaft retainer ring 611 at the end part of the handle shaft 11, the first rotating ring 21 is arranged in contact with the locking part 63, the second rotating ring 31 is arranged in contact with the first rotating ring 21, the second rotating ring 31 is limited by the top cover 612 at the end part of the handle shaft 11, the adjusting washer 64 is clamped between the handle body 10 and the locking part 63 and has elasticity, by rotating the locking member 63 in different directions, the locking member 63 can be made to lock or unlock the first and second rotary rings 21 and 31, thereby preventing the ultrasonic probe from being shaken at will.

The locking block 62 is slidably disposed on the handle shaft 11, a second slider 623 is disposed on the locking block 62, the second slider 623 is slidably inserted into the sliding groove 112, so that the locking block 62 can slide on the handle shaft 11 but cannot rotate on the handle shaft 11, a side surface of the locking block 63 close to the locking block 62 contacts with the first rotating ring 21 and is provided with a locking groove 633, the locking block 62 is disposed in the locking groove 633, a groove bottom surface of the locking groove 633 is a first spiral inclined surface 631, and a side surface of the locking block 62 close to the locking block 63 is a second spiral inclined surface 621 matched with the first spiral inclined surface 631.

The first spiral slope 631 and the second spiral slope 621 can be attached by rotating the locker 63 in the first direction, and the locker 63 releases the adjustment washer 64, so that the contact pressure of the locker 63, the first rotating ring 21, and the second rotating ring 31 is reduced, thereby reducing the damping among the locker 63, the first rotating ring 21, and the second rotating ring 31, and the locker 63 releases the first rotating ring 21 and the second rotating ring 31; by rotating the locking member 63 in the second direction, which is opposite to the first direction, to space the first spiral inclined surface 631 from the second spiral inclined surface 621, the locking member 63 presses the adjustment washer 64, so that the contact pressure between the locking member 63, the first rotating member 20, and the second rotating member 30 is increased, and the damping between the locking member 63, the first rotating ring 21, and the second rotating ring 31 is increased, so that the locking member 63 locks the first rotating ring 21 and the second rotating ring 31.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. A catheter control handle for steering an ultrasound probe in different directions by a pulling member, the pulling member comprising a first pull wire and a second pull wire, the catheter control handle comprising:

the first rotating member can rotate on the handle shaft in two opposite directions, so that the first traction wire and the second traction wire respectively drive the ultrasonic probe to deflect in different directions.

2. The catheter control handle of claim 1, the pull member further comprising a third pull wire and a fourth pull wire, wherein the catheter control handle further comprises a second rotatable member rotatably disposed on the handle shaft, the third pull wire and the fourth pull wire each having one end connected to the second rotatable member and the other end connected to the ultrasonic probe, the second rotatable member being capable of being rotated on the handle shaft in opposite directions to the handle, such that the third pull wire and the fourth pull wire respectively drive the ultrasonic probe to deflect in different directions.

3. The catheter control handle of claim 2 wherein the handle shaft has a first split axis and a second split axis, the first pull wire and the second pull wire are connected to the first rotatable member after being guided through the first split axis, and the third pull wire and the fourth pull wire are connected to the second rotatable member after being guided through the second split axis.

4. The catheter control handle according to claim 3, wherein a wire wheel carrier is slidably disposed on the handle shaft, the wire wheel carrier is disposed between the first rotating member and the second rotating member, a sliding groove is disposed on the handle shaft along an axial direction of the handle shaft, a first slider is disposed on the wire wheel carrier, the first slider is slidably inserted into the sliding groove, a first winding post and a second winding post are disposed on the wire wheel carrier, the first traction wire sequentially passes through the first split shaft and the first winding post to be guided and then connected to the first rotating member, the second traction wire sequentially passes through the first split shaft and the second winding post to be guided and then connected to the first rotating member, the third traction wire sequentially passes through the second split shaft and the first winding post to be guided and then connected to the second rotating member, and the fourth traction wire sequentially passes through the second split shaft and the second rotating member, The second winding post is connected with the second rotating part after being guided.

5. The catheter control handle according to claim 4, wherein the pulley frame is provided with a first projection, the first rotating member is provided with a first recess, and the first projection is rotatably provided in the first recess to limit a rotation angle of the first rotating member; the wire wheel frame is provided with a second protruding part, the second rotating part is provided with a second sunken part, and the second protruding part is arranged in the second sunken part to limit the rotating angle of the second rotating part.

6. The catheter control handle according to claim 4, wherein the handle shaft is provided with an insertion hole for inserting a catheter, the sliding groove is provided on a wall of the insertion hole, the first traction wire and the second traction wire are connected to the first rotating member after sequentially passing through the insertion hole and the sliding groove, and the third traction wire and the fourth traction wire are connected to the second rotating member after sequentially passing through the insertion hole and the sliding groove.

7. The catheter control handle according to claim 4, further comprising a locking assembly, wherein the locking assembly comprises a blocking member, a locking block, a locking member and an adjusting washer, the blocking member, the locking block, the locking member and the adjusting washer are sequentially arranged on the handle shaft, the locking member is rotatably arranged on the handle shaft, the blocking member is fixedly arranged on the handle shaft, the first rotating member and the second rotating member are both arranged between the blocking member and the locking block, the adjusting washer is clamped between the handle body and the locking member, and the locking member can be used for locking or unlocking the first rotating member and the second rotating member by rotating the locking member in different directions.

8. The catheter control handle according to claim 7, wherein the locking block is slidably disposed on the handle shaft, a second slider is disposed on the locking block, the second slider is slidably inserted into the sliding groove, a side surface of the locking member close to the locking block contacts with the first rotating member and is provided with a locking groove, the locking block is disposed in the locking groove, a groove bottom surface of the locking groove is provided with a first spiral inclined surface, a side surface of the locking block close to the locking member is provided with a second spiral inclined surface adapted to the first spiral inclined surface, and the first spiral inclined surface and the second spiral inclined surface can be attached to each other by rotating the locking member in a first direction, and the first rotating member and the second rotating member can be released from the locking member; the first spiral inclined plane and the second spiral inclined plane are spaced by rotating the locking piece towards the second direction, the locking piece locks the first rotating piece and the second rotating piece, and the first direction and the second direction are opposite.

9. The catheter control handle of claim 8 wherein a third protrusion is provided on a side of the locking block adjacent the retaining member, and a third recess is provided on the retaining member, the third protrusion being slidably disposed within the third recess to limit the angle of rotation of the retaining member.

10. The catheter control handle according to any one of claims 1 to 9, further comprising a bushing for fitting over an end of the catheter proximal to the handle body.