CN217960937U - Bendable catheter and handle of bendable catheter - Google Patents

Abstract

The utility model discloses a handle of pipe and adjustable curved pipe of can bending, the handle includes: the handle comprises a handle main body and a handle, wherein the handle main body is provided with an installation space and a movable hole, and the movable hole is communicated with the installation space; the receiving mechanism is arranged at the near end of the handle main body; the bend-adjusting operating mechanism comprises an internal movable block and an external shifting piece, wherein the internal movable block is installed in the installation space, the external shifting piece is rotatably installed on the side wall of the handle main body, at least one part of the external shifting piece penetrates through the movable hole to be in threaded fit connection with the internal movable block, the external shifting piece can be rotated to drive the internal movable block to move along the axial direction of the installation space, the internal movable block is provided with a fixed part, and the internal movable block is provided with a guide pipe through hole for the guide pipe to penetrate through. The transmission cooperation is realized through the mode of screw assembly to the built-in movable block and the external piece of dialling of handle, and is easy and simple to handle to higher stability has.

Description

Bendable catheter and handle of bendable catheter

Technical Field

The utility model relates to a medical field further relates to adjustable curved pipe and adjustable curved pipe's handle.

Background

Catheters are common surgical instruments in interventional procedures, and in transcatheter minimally invasive interventional treatment, a catheter is generally required to be implanted to a desired position, such as a heart or a specific blood vessel, through the blood vessel, and then an instrument is implanted to a target position along a channel of the catheter, so as to achieve the purpose of treating the target position.

For the purpose of implanting the instrument, the head end of the catheter is usually required to be coaxially aligned with the target position, and in the prior art, the catheter is usually bent in advance according to the characteristics of the implantation position, so that the distal end of the catheter can be aligned with the target position after reaching a predetermined position.

The handle of the existing catheter is generally complex in structure, difficult to install and complex to operate, and influences the use of the catheter.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims to provide a handle of adjustable curved pipe and adjustable curved pipe, the built-in movable block and the external mode of dialling the piece and passing through the screw assembly of handle realize the transmission cooperation, and is easy and simple to handle to higher stability has.

In order to achieve the above object, the present invention provides a handle of an adjustable bending catheter, including:

the handle comprises a handle main body and a handle, wherein the handle main body is provided with an installation space and a movable hole, and the movable hole is communicated with the installation space;

the accommodating mechanism is arranged at the near end of the handle main body and is used for fixing the catheter;

the bend-adjusting line operating mechanism comprises an internal movable block and an external shifting piece, the internal movable block is mounted in the mounting space, the external shifting piece is rotatably mounted on the side wall of the handle main body, at least one part of the external shifting piece penetrates through the movable hole to be in threaded fit connection with the internal movable block, the external shifting piece can be rotated to drive the internal movable block to move along the axial direction of the mounting space, and the internal movable block is provided with a fixed part for fixing a bend-adjusting line; the built-in movable block is provided with a conduit through hole for the conduit to pass through.

In some preferred embodiments, the handle of the bendable catheter further comprises a first limiting rod and a second limiting rod which are mounted in the mounting space at intervals; the built-in movable block is provided with a first limiting groove and a second limiting groove which are arranged at intervals, the first limiting rod is installed in the first limiting groove, the second limiting rod is installed in the second limiting groove, and the built-in movable block can slide along the first limiting rod and the second limiting rod.

In some preferred embodiments, the first and second limiting grooves are located on the inner wall of the inner movable block and communicate with the conduit through hole.

In some preferred embodiments, the handle of the bendable catheter further comprises a support mechanism mounted at the distal end of the handle body, the distal ends of the first and second limiting rods are respectively fixed to the support mechanism, and the proximal ends of the first and second limiting rods are respectively fixed to the receiving mechanism.

In some preferred embodiments, the fixing portion of the built-in movable block has a receiving groove, a distal sidewall and a proximal sidewall of the receiving groove have a distal threading hole and a proximal threading hole respectively communicated with the receiving groove, and a proximal end of the bend adjusting line passes through the distal threading hole, the receiving groove and the proximal threading hole in sequence;

the handle still blocks up including sealing, it has the appearance line groove to seal up to block up, the shutoff stopper install in the holding tank, the near-end of transferring the curved line is located in holding the line groove, rotates the shutoff blocks up can change in holding the line groove transfer the curved line with in the distal end through wires hole transfer the angle between the curved line.

In some preferred embodiments, the number of the bend line adjusting operating mechanisms is more than two.

In some preferred embodiments, the handle further comprises a hemostasis valve mounted to a proximal end of the receiving mechanism.

In some preferred embodiments, the receiving mechanism has a distal receiving groove, a proximal receiving groove, and a communication channel communicating the distal receiving groove and the proximal receiving groove;

the proximal end of the catheter is suitable for being fixed to the distal holding groove, the hemostatic valve is installed on the proximal side of the holding mechanism, a spiral groove is formed in the distal end face of the hemostatic valve, and the proximal end of the holding mechanism is rotatably installed on the spiral groove;

the inner wall of the spiral groove forms a propelling part, a flow blocking part is arranged between the propelling part and the communication channel, the flow blocking part is provided with a flow blocking hole, the flow blocking hole is communicated with the communication channel, the hemostasis valve is rotated to drive the propelling part to move towards the far end and extrude the flow blocking part, the flow blocking hole is closed, and the near-end accommodating groove is separated from the far-end accommodating groove;

the handle further comprises a flush joint which is mounted to the receiving mechanism and which is in communication with the communication channel.

In some preferred embodiments, the outer wall of the spiral groove of the hemostatic valve has a limiting groove communicated with the spiral groove, the distal end of the limiting groove has a first limiting arm, the proximal end of the limiting groove has a second limiting arm, the proximal end of the receiving mechanism has a third limiting arm extending radially outwards, and the third limiting arm extends into the limiting groove.

According to another aspect of the utility model, further provide adjustable curved pipe, include:

a handle of the adjustable bending catheter of any one of the above;

the catheter comprises a proximal main body section and a distal bending section, the distal bending section is connected to the distal end of the proximal main body section, and the proximal end of the proximal main body section is mounted on the receiving mechanism;

and the near end of the bending adjusting line is fixed on the fixing part, and the far end of the bending adjusting line is connected with the far end bending adjusting section.

Compared with the prior art, the utility model provides an adjustable curved pipe and adjustable curved pipe's handle has following at least one beneficial effect:

1. the utility model provides an adjustable bending conduit and handle of adjustable bending conduit, the transmission cooperation is realized through the mode of screw assembly to the built-in movable block and the external stirring piece of handle, easy and simple to handle, and have higher stability;

2. the utility model provides an adjustable bending conduit and handle of adjustable bending conduit, the preset position of the built-in movable block is provided with a limiting groove, a limiting rod is arranged in the limiting groove, the built-in movable block can be limited in the process of axial movement of the built-in movable block, and the rotation of the built-in movable block is prevented;

3. the utility model provides an adjustable curved pipe has seted up the holding tank on the built-in movable block, is provided with the shutoff stopper in the holding tank, can the tensioning transfer curved line through the shutoff stopper, is convenient for transfer the installation of curved line.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in conjunction with the accompanying drawings.

FIG. 1 is a diagram of the use of the adjustable bend catheter of the preferred embodiment of the present invention;

fig. 2 is a perspective view of an adjustable bending catheter in accordance with a preferred embodiment of the present invention;

FIG. 3 is a perspective view of a modified embodiment of the adjustable bend conduit of the preferred embodiment of the present invention;

fig. 4 is a schematic view of the structure of the catheter of the adjustable bending catheter according to the preferred embodiment of the present invention;

fig. 5 is a schematic structural view of a modified embodiment of the catheter of the adjustable bending catheter according to the preferred embodiment of the present invention;

fig. 6 is a schematic structural view of a modified embodiment of the catheter of the adjustable bending catheter according to the preferred embodiment of the present invention;

fig. 7 is a schematic structural view of a modified embodiment of the catheter of the adjustable bending catheter according to the preferred embodiment of the present invention;

fig. 8 is a schematic perspective view of a second preferred embodiment of the adjustable bending catheter of the present invention;

fig. 9 is a schematic view of the bending direction of the tube of the adjustable bending tube according to the preferred embodiment of the present invention;

fig. 10 is a schematic view of the bending angle of the adjustable bending conduit according to the preferred embodiment of the present invention;

fig. 11 is a schematic diagram illustrating the arrangement position of the bending wires of the bending adjustable catheter according to the preferred embodiment of the present invention;

fig. 12 is a schematic view of a modified embodiment of the arrangement position of the bending wires of the bending adjustable catheter according to the preferred embodiment of the present invention

Fig. 13 is a schematic perspective view of a bendable catheter according to a third preferred embodiment of the present invention;

fig. 14 is a schematic view of the distal end arrangement of the bend-adjusting wire of the bend-adjustable catheter according to the third preferred embodiment of the present invention;

fig. 15 is a schematic view of the handle of the adjustable bending catheter according to the preferred embodiment of the present invention;

FIG. 16 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 15;

FIG. 17 is a schematic view of the internal structure of the handle of the adjustable bending catheter according to the preferred embodiment of the present invention;

FIG. 18 is a perspective view of a plug of the handle of the adjustable bend catheter according to the preferred embodiment of the present invention;

FIG. 19 is a perspective view of the hemostatic valve and receiving mechanism of the handle of the adjustable bend catheter of the preferred embodiment of the present invention;

FIG. 20 is a cross-sectional view taken along line B-B of FIG. 19;

fig. 21 is an enlarged view at a in fig. 20.

The reference numbers indicate:

the handle 10, the handle body 11, the installation space 111, the movable hole 112, the receiving mechanism 12, the distal receiving groove 121, the proximal receiving groove 122, the communicating channel 123, the bend-adjusting wire-pulling operating mechanism 13, the internal movable block 131, the fixing portion 1311, the catheter perforation 1312, the external toggle member 132, the receiving groove 133, the distal threading hole 134, the proximal threading hole 135, the first stop lever 141, the second stop lever 142, the first stop groove 151, the second stop groove 152, the support mechanism 16, the plug 17, the wire receiving groove 170, the hemostatic valve 18, the spiral groove 180, the pushing portion 181, and the flow blocking member 182, the catheter comprises an outer support arm 183, an inner support arm 184, a limiting groove 185, a first limiting arm 186, a second limiting arm 187, a third limiting arm 188, a pressing member 189, a flush joint 19, a catheter 20, a proximal body section 21, a reference plane 213, a distal bending adjusting section 22, a first section 221, a second section 222, a fixing element 23, a first fixing element 231, a second fixing element 232, an inner catheter 241, an outer catheter 242, a reinforcing layer 243, an inner spring 2431, an outer winding wire 2432, a bending adjusting wire 30, a first bending adjusting wire 31, a second bending adjusting wire 32 and a guide channel 100.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will refer to the accompanying drawings to describe specific embodiments of the present invention. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

Referring to fig. 1 to 21 of the drawings, the adjustable bending catheter of the preferred embodiment of the present invention comprises a handle 10, a catheter 20 and a bending wire 30. The proximal end of the catheter 20 is mounted to the handle 10, the adjustable bending catheter has a guide channel 100 passing through the handle 10 and the catheter 20, the catheter 20 has a proximal body section 21 and a distal bending section 22, the distal bending section 22 is located at the distal end of the proximal body section 21, and the hardness of the distal bending section 22 is lower than that of the proximal body section 21. Transfer the distal end of curved line 30 to be fixed in the curved section 22 is transferred to the distal end, the near-end connect in handle 10, operation handle 10 can control transfer curved line 30 to adjust the bending angle of curved section 22 is transferred to the distal end to the biggest axial motion distance sets up the maximum turning angle of curved section 22 is transferred to the distal end.

The distal tuning section 22 further comprises a first section 221 and a second section 222. The second section 222 is connected to the distal end of the proximal body section 21, the first section 221 is connected to the distal end of the second section 222, the bending wire 30 may be one or more, and the distal end of the bending wire 30 may be fixed to the distal end of the first section 221 and/or the distal end of the second section 222.

Further, a plane where the central axis of the second segment 222 and the central axis of the proximal main body segment 21 are located is a reference plane 213, and the distal end of the first segment 221 can be pulled by the bending adjustment line 30 to move in a direction away from the reference plane 213. In the bent state, an included angle b between the central axis of the first segment 221 and the reference plane 213 ranges from 10 ° to 60 °, and preferably ranges from 20 ° to 50 °.

Preferably, in the process of operating the handle 10 to control the bending adjustment line 30 to adjust the bending of the distal bending adjustment section 22, an included angle range between the distal end of the distal bending adjustment section 22 and the proximal main body section 21 is changed within a certain three-dimensional range, so that the requirements of various angle adjustments can be met.

The adjustable bending catheter provided by the application is preferably suitable for establishing a channel of the left atrial appendage implantation instrument through a blood vessel and can also be used as a channel for carrying out an intervention operation on other tissues of a human body, and the specific application scene of the adjustable bending catheter should not constitute a limitation on the application.

In one use scenario, the distal end of catheter 20 of the adjustable bending catheter is adapted to enter the right atrium via the inferior vena cava, and after reaching the left atrium through the interatrial septum, the distal end of catheter 20 is placed in an implantation site near the left atrial appendage. The included angle between the inferior vena cava and the atrial septum is an acute angle, the position angle between the atrial septum puncture point and the left auricle is larger in individual difference range, and therefore the distal end of the adjustable bent catheter needs to be set to be a navigation angle so as to reach the left auricle more efficiently and be in a coaxial state with the left auricle, and meanwhile, the operation safety needs to be considered. In this application, the distal end of pipe 20 passes through the atrium interval after, the operator can operate handle 10 adjusts with reasonable speed the angle of distal end section of turning 22 adjusts the coaxial state of the distal end of pipe 20 and the position of implanting for the apparatus certainly can implant preset position with the state of comparatively adapting after the distal end of pipe 20 is released, improves and implants efficiency.

The distal end of the distal bending adjusting section 22 is provided with a fixing element 23, and the distal end of the bending adjusting wire 30 is fixed on the fixing element 23. Preferably, the fixation element 23 is a metal ring fixed to the distal tuning section 22. Optionally, the fixing element 23 is integrally formed with the distal tuning bend section 22.

The far-end bending adjusting section 22 has certain elasticity, when the far-end bending adjusting section 22 is under the action of the pulling force of the bending adjusting line 30, the far-end bending adjusting section 22 bends towards the near end, and after the pulling force of the bending adjusting line 30 disappears, the far-end bending adjusting section 22 restores to a natural form.

Preferably, the bend-adjusting wire 30 extends from the fixing member 23 to the proximal end in a straight line along the catheter 20, and is connected to the handle 10 together with the proximal end of the catheter 20. Referring to fig. 5, in a modified embodiment, the bending adjustment line 30 extends along the axial direction of the catheter 20 in a curve, so that when the bending adjustment line 30 is subjected to an external pulling force, the pulling force can be more easily dispersed along the radial direction of the catheter 20, and the distal bending adjustment section 22 can be formed into a softer bending state.

The bending adjusting line 30 can bear a tensile force of more than 5N. Preferably, the bend regulating wire 30 is a wire.

Further, the conduit 20 includes an inner conduit 241 and an outer conduit 242. The bend line 30 is movably mounted between the inner conduit 241 and the outer conduit 242.

The hardness of the outer conduit 242 corresponding to the distal bending section 22 is 35D to 55D, the hardness of the outer conduit 242 corresponding to the proximal main body section 21 is 55D to 75D, and the hardness of the inner conduit 241 corresponding to the distal bending section 22 and the proximal main body section 21 is the same, so that the hardness of the distal bending section 22 is lower than that of the proximal main body section 21.

Referring to fig. 6, in a variant embodiment, the catheter 20 further comprises a reinforcement layer 243 between the inner catheter 241 and the outer catheter 242, the reinforcement layer 243 corresponding to the distal bending section 22 having a lower stiffness than the reinforcement layer 243 corresponding to the proximal main body section 21.

Preferably, the reinforcing layer 243 comprises a metal wire wound on the outer sidewall of the inner catheter 241, the density of the metal wire corresponding to the distal bending section 22 is lower than that of the metal wire corresponding to the proximal main body section 21, so that the hardness of the reinforcing layer 243 corresponding to the distal bending section 22 is lower than that of the reinforcing layer 243 corresponding to the proximal main body section 21.

Referring to fig. 6 and 7, in a plane projection through the axis of the catheter, the included angle between the wires corresponding to the proximal body segment in the radial direction is less than 60 degrees, preferably not more than 45 degrees, the pitch between the wires is small, the supporting force of the wires in the radial direction is large, and a high-hardness section is formed; in a plane projection passing through the axis of the catheter, the included angle between the metal wires corresponding to the distal bending section is larger than 60 degrees, preferably larger than 90 degrees, the pitch between the metal wires is larger, the supporting force of the metal wires in the radial direction is reduced, and a low-hardness section is formed. In a variant embodiment, the reinforcement layer 243 is only provided between the inner conduit 241 and the outer conduit 242 corresponding to the proximal body segment. Referring to fig. 7, in another variant embodiment, the number of layers of wires of the reinforcing layer 243 corresponding to the proximal main body segment 21 is greater than the number of layers of wires corresponding to the distal turnup segment 22. Illustratively, the reinforcement layer 243 includes an inner spring 2431 and an outer wrap wire 2432, the inner spring 2431 being covered on the outside of both the proximal body segment 21 and the distal tuning bend segment 22, the outer wrap wire 2432 being wrapped around the outside of the proximal body segment 21 only.

Preferably, the bend line 30 is located between the reinforcement layer 243 and the inner conduit 241. Optionally, in a variant embodiment, the bend line 30 can also be located outside the reinforcement layer 243, between the reinforcement layer 243 and the outer catheter 242.

Referring to fig. 8, in a variant embodiment, the second segment 222 may have a fixed curvature and a first predetermined angle a may be provided between the central axis of the second segment and the central axis of the proximal body segment 21. The first preset included angle a ranges from 30 degrees to 60 degrees, and preferably ranges from 40 degrees to 45 degrees. The second segment 222 is provided at the distal end of the proximal body segment 21, and the angle of the first segment 21 can be changed by rotating the proximal body segment 21.

Referring to fig. 9, the distal end of the first segment 221 can be pulled to move to either the left or the right of the reference plane 213, and in a variant embodiment to only one of the sides. Preferably, after the first segment 221 is bent, an included angle b between a central axis of the first segment 221 and the reference plane 213 ranges from 10 ° to 60 °, and preferably ranges from 20 ° to 50 °.

It should be noted that the first segment 221 may also have a certain preset bending angle, the preset bending angle is far away from the reference plane 213, the range of the preset bending angle meets the requirement of the included angle b, and the requirement of the included angle b is met after the bending generated by the bending adjusting line 30 is overlapped. So set up, can further improve the curved efficiency of transferring of transfer curved pipe.

Referring to fig. 11, when the first section 221 of the distal end bending adjustment section 22 is in an initial state, that is, in a straight state, the central axis of the first section 221 is located on the reference plane 213, the bending adjustment line 30 is fixed to the distal end of the first section 221, a second preset included angle c is formed between a plane where the distal end point of the bending adjustment line 30 and the central axis of the first section 221 are located and the reference plane 213, and the range of the second preset included angle c is between 0 ° and 90 °. Because the position where the distal end of the bend adjusting wire 30 is fixed to the first segment 221 is not the position where the distance from the reference plane 213 is the largest, when the distal end of the first segment 221 is under the action of the pulling force of the bend adjusting wire 30, the pulling force actually acting on the first segment 221 is reduced, so that the condition that the bending angle of the distal end of the first segment 221 is too fast can be avoided, the stability of the operation process is improved, and the risk of accidentally injuring the intracardiac tissue is reduced.

The first preset included angle a and the second preset included angle c are approximately in a negative correlation relationship, the first preset included angle a is increased, and the second preset included angle c is decreased; the first preset included angle a is reduced, and the second preset included angle c is increased. Setting the first preset included angle a and the second preset included angle c to be approximately in a negative correlation can help to realize the coaxial state of the distal end bending section 22 and the implantation position.

Referring to fig. 12, in a modified embodiment, the number of the bending lines 30 is two, and when the distal bending section 22 is in the initial state, distal end points of the two bending lines 30 are located on both sides of the reference plane 203, and may be symmetrically arranged with respect to the reference plane 203. The far-end bending adjusting section 20 can be driven to bend towards two different directions through the two bending adjusting lines 30, and various bending adjusting requirements are met. Optionally, in some variant embodiments, the number of the bend-adjusting lines 30 can also be three or four, so as to further increase the bend-adjusting direction of the distal bend-adjusting section 20, and the specific number of the bend-adjusting lines 30 should not be construed as a limitation to the present application.

Referring to fig. 13, in a variant embodiment, both the first section 221 and the second section 222 are able to bend. The bending adjusting line 30 includes a first bending adjusting line 31 and a second bending adjusting line 32, a distal end of the first bending adjusting line 31 is fixed to a distal end of the first section 221, and a distal end of the second bending adjusting line 32 is fixed to a distal end of the second section 222. In the present modified embodiment, both the first segment 221 and the second segment 222 are bendable, and the angle adjustment of the distal end bent segment 22 can be made more flexible. During use, an operator can first pull the second bend adjustment line 32 proximally to control the second segment 222 to start bending by a preset angle; then the first bending-adjusting wire 31 is pulled proximally to control the first segment 221 to start bending by a preset angle so as to adjust the coaxiality of the distal end of the first segment 221 and the implantation position.

Referring to fig. 14, further, when the distal end bending section 22 is in the initial state, an included angle d between connecting lines between the distal ends of the first bending line 31, the second bending line 32 and a central axis of the distal end bending section 22 ranges from 30 ° to 150 °, and is preferably 60 ° to 120 °. When the second section 222 is in a bending state, an included angle between a central axis of the second section 222 and a central axis of the proximal main body section 21 ranges from 30 ° to 150 °.

It should be noted that, in some embodiments, the second segment 222 may have a predetermined angle, and the first segment 221 may also have a predetermined angle. So set up, can further improve the curved efficiency of transferring of transfer curved pipe. Whether the first section 221 and the second section 222 have a preset angle should not limit the present invention.

Further, the first section 221 has a hardness less than that of the second section 222, and the second section 222 has a hardness less than that of the proximal body section 21. Specifically, the first section 221 has a durometer between 35D and 55D, the second section 222 has a durometer between 55D and 65D, and the proximal body section 21 has a durometer above 65D.

The distal end of the first section 221 is provided with a first fixing element 231, the distal end of the second section 222 is provided with a second fixing element 232, the distal end of the first bending adjusting wire 31 is fixed to the first fixing element 231, and the distal end of the second bending adjusting wire 32 is fixed to the second fixing element 232.

Referring to fig. 15 and 16, the handle 10 further includes a handle body 11, an accommodating and connecting mechanism 12, and a bend-adjusting wire operating mechanism 13. Referring to fig. 2 and 3, the number of the bend adjusting wire operating mechanisms 13 can be one or two, and can also be three or more, and the specific number of the bend adjusting wire operating mechanisms 13 should not be construed as limiting the present application. The handle body 11 has an installation space 111 and a movable hole 112, and the movable hole 112 is communicated with the installation space 111; the receiving mechanism 12 is mounted to the proximal end of the handle body 11. The bend-adjusting operating mechanism 13 includes an internal movable block 131 and an external toggle member 132, the internal movable block 131 is mounted in the mounting space 111, the external toggle member 132 is rotatably mounted on the side wall of the handle body 11, at least a portion of the external toggle member 132 passes through the movable hole 112 and is in threaded fit with the internal movable block 131, and the external toggle member 132 is rotated to drive the internal movable block 131 to move along the axial direction of the mounting space 111. The built-in movable block 131 has a fixing portion 1311, and the proximal end of the tuning line 30 is fixed to the fixing portion 1311; the built-in movable block 131 is provided with a conduit through hole 1312, the proximal end of the conduit 20 passes through the conduit through hole 1312, and the proximal end of the conduit 20 is fixed on the containing mechanism 12. When the distal bending adjustment section 22 is in a bending adjustment state, there is a tendency to recover to a natural state, and a pulling force generated by the recovery tendency on the pull wire 30 is not enough to drive the internal movable block 131 and the external toggle member 132 to move relatively, that is, when the distal bending adjustment section 22 is in a bending adjustment state, the external toggle member 132 needs to be rotated by an external force to recover to the natural state before bending adjustment.

In the using process, an operator can control the internal movable block 131 to move along the axial direction of the internal movable block in the installation space 111 by rotating the external toggle member 132, so as to drive the bending adjusting line 30 to move, adjust the angle of the distal bending adjusting section 22, and the operation is simple and convenient.

Preferably, the external toggle member 132 and the internal movable block 131 are connected by four-head screw thread fit, so that the bending adjusting efficiency can be greatly increased, and the external toggle member 132 can be set to rotate within one half of a circle to control the distal bending adjusting section 22 to be adjusted to the maximum bending angle. Optionally, the external toggle member 132 and the internal movable block 131 can also be connected in a matching manner through a common thread, a two-end thread or a three-end thread, and the specific thread matching connection manner between the external toggle member 132 and the internal movable block 131 should not be construed as a limitation to the present application.

Referring to fig. 16 and 17, the handle 10 further includes a first stopper rod 141 and a second stopper rod 142 mounted to the mounting space 111 at an interval; the built-in movable block 131 has a first limiting groove 151 and a second limiting groove 152 which are arranged at an interval, the first limiting rod 141 is mounted in the first limiting groove 151, the second limiting rod 142 is mounted in the second limiting groove 152, and the built-in movable block 131 can slide along the first limiting rod 141 and the second limiting rod 142. In the process of rotating the external toggle member 132 to control the axial movement of the internal movable block 131, the first limiting rod 141 and the second limiting rod 142 can be used as guide rails for the sliding of the internal movable block 131, and on the other hand, the first limiting rod 141 and the second limiting rod 142 arranged at intervals can also prevent the internal movable block 131 from rotating along with the external toggle member 132, thereby improving the stability of the axial movement of the internal movable block 131.

Specifically, the first and second limiting grooves 151 and 152 are located on the inner wall of the internal movable block 131 and communicate with the conduit through hole 1312. When the first stopper rod 141 is mounted in the first stopper groove 151, the second stopper rod 142 is mounted in the second stopper groove 152, and the conduit 20 is mounted in the conduit through hole 1312, the conduit 20 is located between the first stopper rod 141 and the second stopper rod 142. Alternatively, in some modified embodiments, the first and second limiting grooves 151 and 152 are respectively located on the outer side wall of the built-in movable block 131, and the first and second limiting rods 141 and 142 are respectively mounted on the inner wall of the mounting space 111.

Further, the handle 10 further includes a supporting mechanism 16 mounted at the distal end of the handle body 11, the distal ends of the first limiting rod 141 and the second limiting rod 142 are respectively fixed to the supporting mechanism 16, and the proximal ends of the first limiting rod and the second limiting rod are respectively fixed to the receiving mechanism 12. The support mechanism 16 can provide support for not only the first stopper rod 141 and the second stopper rod 142, but also the guide tube 20.

Referring to fig. 17, the fixing portion 1311 of the built-in movable block 131 has a receiving groove 133, distal and proximal side walls of the receiving groove 133 have distal and proximal threading holes 134 and 135 communicating with the receiving groove 133, respectively, and a proximal end of the bending wire 30 passes through the distal threading hole 134, the receiving groove 133 and the proximal threading hole 135 in sequence. The handle 10 further comprises a plug 17, the plug 17 has a line receiving groove 170, the plug 17 is mounted in the receiving groove 133, the proximal end of the bend-adjusting line 30 is located in the line receiving groove 170, and rotating the plug 17 can change the angle, preferably 90 °, between the bend-adjusting line 30 in the line receiving groove 170 and the bend-adjusting line 30 in the distal threading hole 134, so as to tension the bend-adjusting pull line 30, and make the proximal end of the bend-adjusting pull line 30 not move.

Preferably, the diameter of the plug 17 is slightly larger than that of the receiving groove 133, and the plug 17 is fixed in the receiving groove 133 by interference fit. Alternatively, the plug 17 can be fixed in the receiving groove 133 by gluing or welding, and the specific installation manner of the plug 17 should not be construed as limiting the application.

Further, the number of the bending adjusting wire operating mechanisms 13 is two or more, and the bending adjusting wire operating mechanisms are respectively correspondingly connected to the proximal ends of the two or more bending adjusting wires 30 and are respectively used for bending the distal ends of the distal bending adjusting sections 22 in different directions.

Referring to fig. 15, 16 and 19, further, the handle 10 further includes a hemostatic valve 18 mounted at the proximal end of the receiving mechanism 12.

Referring to fig. 20, the receiving mechanism 12 has a distal receiving groove 121, a proximal receiving groove 122 and a communicating channel 123, wherein the communicating channel 123 communicates the distal receiving groove 121 and the proximal receiving groove 122. The proximal end of the catheter 20 is fixed to the distal accommodating groove 121, the hemostatic valve 18 is mounted on the proximal side of the accommodating mechanism 12, the distal end surface of the hemostatic valve 18 is provided with a spiral groove 180, and the proximal end of the accommodating mechanism 12 is rotatably mounted on the spiral groove 180. The inner wall of the spiral groove 180 forms a propelling part 181, a flow blocking part 182 is disposed between the propelling part 181 and the communication channel 123, the flow blocking part 182 has a flow blocking hole (not shown), the flow blocking hole is communicated with the communication channel 123, the hemostasis valve 18 is rotated to drive the propelling part 181 to move towards the distal end and press the flow blocking part 182, the flow blocking hole is closed, and the proximal accommodating groove 122 is blocked from the distal accommodating groove 121.

The radial dimension of the communication channel 123 is smaller than the radial dimension of the proximal receiving groove 122, and the sidewall of the communication channel 123 forms a step limiting structure, which abuts against the flow blocking element 182 to limit the flow blocking element 182.

Referring to fig. 21, in particular, the hemostatic valve 18 includes a lateral support arm 183 and a medial support arm 184, the lateral support arm 183 and the medial support arm 184 are spaced apart, and a gap therebetween forms the spiral groove 180. The distal end of the medial support arm 184 fits within the proximal receiving slot 122 of the receiving mechanism 12, and the distal end of the medial support arm 184 forms the pushing portion 181.

The choked flow piece 182 is made of an elastic material, and the elastic material includes but is not limited to silica gel, soft PVC, TPE or TPR, etc. When the hemostatic valve 18 is located at the proximal end of the container 12, the distance between the pusher 181 and the communication channel 123 is greater than the axial width of the blocking member 182; when the hemostasis valve 18 is rotated relative to the attachment mechanism 12 such that the proximal end of the attachment mechanism 12 moves to the bottom of the spiral groove 180, the distance between the propulsion portion 181 and the communication passage 123 is smaller than the axial width of the blocking member 182, and the blocking member 182 is compressed to deform and expand to close the blocking hole in the radial direction.

Referring to fig. 19, the handle 10 further includes a flush fitting 19 mounted to the receiving mechanism 12 and in communication with the communication channel. It should be noted that after the choke hole is closed, the communication path to the catheter 20 is cut off, and the communication channel 123 and the catheter 20 can be flushed, and medicines can be delivered through the flushing connector 19.

Referring to fig. 21, the outer wall of the spiral groove 180 of the hemostatic valve 18 has a limiting groove 185 communicating with the spiral groove 180, the limiting groove 185 has a first limiting arm 186 at the distal end and a second limiting arm 187 at the proximal end, the proximal outer sidewall of the receiving mechanism 12 has a third limiting arm 188 extending radially outward, and the third limiting arm 188 extends into the limiting groove 185. In other words, the inner side surface of the outer support arm 183 forms the stopper groove 185.

When the hemostatic valve 18 rotates relative to the container 12 and moves on the container 12, the third limiting arm 188 can be axially limited in cooperation with the first and second limiting arms 186, 187. When the first stopper arm 186 abuts against the third stopper arm 188, the distance between the propulsion portion 181 and the communication passage 123 is large, and the choke hole of the choke piece 182 is in an open state; when the second limit arm 187 abuts against the third limit arm 188, the distance between the propelling part 181 and the communication passage 123 is small, and the orifice of the choke 182 is in a closed state.

Referring to fig. 20, the hemostasis valve 18 further includes a crimp 189. The capping member 189 is installed in the proximal receiving groove 122 with the capping member 189 between the push part 181 and the flow blocking member 182, and the capping member 189 has a through hole at a middle position corresponding to the flow blocking hole. The crimp 189 is fabricated from a relatively rigid material such as, but not limited to, a medical grade modified nylon material. The overlapping member 189 serves to assist the propulsion portion 181 in effectively compressing the choke 182.

The junction between the distal outer side surface and the distal end surface of the receiving means 12 is chamfered. The far end of the accommodating mechanism 12 is provided with a chamfer so as to reduce mechanical damage to a human body caused by the accommodating mechanism 12, and the chamfer can be an arc chamfer or an oblique chamfer.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The handle of pipe of can turning, its characterized in that includes:

the handle comprises a handle main body and a handle, wherein the handle main body is provided with an installation space and a movable hole, and the movable hole is communicated with the installation space;

the accommodating mechanism is arranged at the near end of the handle main body and is used for fixing the catheter;

the bending line adjusting operating mechanism comprises an internal movable block and an external shifting piece, the internal movable block is arranged in the mounting space, the external shifting piece is rotatably arranged on the side wall of the handle main body, at least one part of the external shifting piece penetrates through the movable hole to be in threaded fit connection with the internal movable block, the external shifting piece is rotated to drive the internal movable block to move along the axial direction of the mounting space, and the internal movable block is provided with a fixed part for fixing a bending line; the built-in movable block is provided with a conduit through hole for the conduit to pass through.

2. The handle for an adjustable bending catheter according to claim 1, further comprising a first stopper rod and a second stopper rod installed at the installation space at an interval; the built-in movable block is provided with a first limiting groove and a second limiting groove which are arranged at intervals, the first limiting rod is installed in the first limiting groove, the second limiting rod is installed in the second limiting groove, and the built-in movable block can slide along the first limiting rod and the second limiting rod.

3. The handle for a bendable catheter according to claim 2, wherein the first and second retaining grooves are located on an inner wall of the built-in movable block and communicate with the catheter through-hole.

4. The handle of an adjustable bending catheter according to claim 2, further comprising a support mechanism mounted at a distal end of the handle body, wherein distal ends of the first limiting rod and the second limiting rod are respectively fixed to the support mechanism, and proximal ends of the first limiting rod and the second limiting rod are respectively fixed to the receiving mechanism.

5. The handle of an adjustable bending catheter according to claim 1, wherein the fixing portion of the built-in movable block has a receiving groove, a distal end side wall and a proximal end side wall of the receiving groove have a distal threading hole and a proximal threading hole respectively communicating with the receiving groove, and a proximal end of the adjustable bending wire passes through the distal threading hole, the receiving groove and the proximal threading hole in this order;

the handle still blocks up including sealing, it has the appearance line groove to seal up to block up, the shutoff stopper install in the holding tank, the near-end of transferring the curved line is located in holding the line groove, rotates the shutoff blocks up can change in holding the line groove transfer the curved line with in the distal end through wires hole transfer the angle between the curved line.

6. The handle according to claim 1, wherein the number of the bending wire operating mechanisms is two or more.

7. The handle of an adjustable bending catheter according to claim 1, further comprising a hemostasis valve mounted at a proximal end of the receiving mechanism.

8. The handle according to claim 7, wherein said receiving mechanism has a distal receiving groove, a proximal receiving groove, and a communicating channel communicating said distal receiving groove and said proximal receiving groove;

the proximal end of the catheter is suitable for being fixed to the distal end accommodating groove, the hemostatic valve is installed on the proximal side of the accommodating and receiving mechanism, a spiral groove is formed in the distal end face of the hemostatic valve, and the proximal end of the accommodating and receiving mechanism is rotatably installed on the spiral groove;

the inner wall of the spiral groove forms a propelling part, a flow resisting part is arranged between the propelling part and the communication channel, the flow resisting part is provided with a flow resisting hole, the flow resisting hole is communicated with the communication channel, the hemostasis valve is rotated to drive the propelling part to move towards the far end and extrude the flow resisting part, the flow resisting hole is closed, and the near-end accommodating groove is separated from the far-end accommodating groove;

the handle further comprises a flushing connector which is arranged on the receiving mechanism and communicated with the communication channel.

9. The handle of an adjustable bending catheter according to claim 8, wherein the outer wall of the spiral groove of the hemostatic valve has a limiting groove communicating with the spiral groove, the limiting groove has a first limiting arm at a distal end and a second limiting arm at a proximal end, and the proximal outer sidewall of the receiving mechanism has a third limiting arm extending radially outward and extending into the limiting groove.

10. An adjustable bend catheter, comprising:

a handle of the adjustable bend catheter of any one of claims 1-9;

the catheter comprises a proximal main body section and a distal bending adjusting section, the distal bending adjusting section is connected to the distal end of the proximal main body section, and the proximal end of the proximal main body section is mounted on the receiving mechanism;

and the near end of the bending adjusting line is fixed on the fixing part, and the far end of the bending adjusting line is connected with the far end bending adjusting section.

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