WO2021073321A1

WO2021073321A1 - Adjustable-angle medical delivery device

Info

Publication number: WO2021073321A1
Application number: PCT/CN2020/114278
Authority: WO
Inventors: 向长林; 金富康
Original assignee: 苏州法兰克曼医疗器械有限公司
Priority date: 2019-10-14
Filing date: 2020-09-09
Publication date: 2021-04-22
Also published as: CN110917468A

Abstract

Disclosed is an adjustable-angle medical delivery device, comprising a guide wire output part (1), a guide wire guide part (2), an adjustment control part (3), and traction wires (4), wherein the guide wire guide part (2) comprises a guide shell (21); the guide shell (21) is symmetrically arranged along a central axis; the guide wire output part (1) can be bent relative to the guide wire guide part (2); the guide wire output part (1) is provided with a guide wire output hole (11); one end of the traction wire (4) is connected to a proximal end of the guide wire output part (1), and the other end of the traction wire (4) is connected to a bending control member (31) of the adjustment control part (3); and the distance between the other end of the traction wire (4) and the central axis is greater than the distance between the one end of the traction wire (4) and the central axis. By means of the configuration of the traction wires (4), when the bending control member (31) of the adjustment control part (3) bends a first angle, the guide wire output part (1) bends a second angle, with the second angle being greater than the first angle, such that the bending control member (31) can flexibly control the distal end to have a large angle change by means of a small angle change, such that a surgical operation is more flexible.

Description

Medical delivery device capable of adjusting angle

Technical field

The invention relates to a medical device, in particular to a medical delivery device capable of adjusting an angle.

Background technique

Interventional therapy is an emerging discipline that integrates imaging diagnosis and clinical treatment. Because it is guided by imaging equipment through the human body’s natural pores or tiny wounds, interventional devices are introduced into the human lesions for minimally invasive treatment, which can accurately and directly reach The lesion is local and there is no major trauma, so it has the advantages of accuracy, safety, high efficiency, wide indications, and fewer complications. It has become the first choice for treatment of some diseases. There are many types of diseases that can be treated with interventional therapy, almost including major diseases of various systems and organs throughout the body.

There are many techniques for interventional therapy. First of all, it can be divided into vascular interventional techniques and non-vascular interventional techniques. Among them, non-vascular interventional techniques include various percutaneous biopsy, various non-vascular luminal angioplasty (including the stenosis of urinary tract, digestive tract, respiratory tract, biliary tract and other narrow dilation and stents), solid tumor local deenergization (Percutaneous puncture intratumor injection, radiofrequency ablation), cyst abscess drainage, fistula (stomach, bladder, etc.), minimally invasive biliary stone and kidney stone removal, bone metastasis or vertebral compression fracture of the vertebral body Plastic surgery, plexus block surgery to treat chronic pain, etc.

However, the ordinary implanter cannot continue to pass when it enters the corner of the human cavity, which leads to a large increase in the risk of the operation or the failure of the operation. The guide wire can be used as the "track" in the human body's natural cavity, which is convenient for the delivery of internal medical devices, such as stents, balloons, etc., in the human body's natural cavity during interventional surgery. Refers to the guide wire passing through the narrow and long natural orifice of the human body to provide a "track" for the delivery of micro-medical devices such as balloon catheters or stents to the stenotic lesions for compression and expansion, and the success of interventional treatment operations.

Specifically, the principle and process of guide wire delivery in the prior art can be referred to related patents such as publication numbers CN209004990U, CN208851536U, CN208582446U, and CN106823106A. Taking one of the prior art as an example, the patent application with the publication number CN106823106A provides a guide wire delivery device, which includes a syringe connection part, and a front delivery part and a rear delivery part are arranged above the syringe connection part, and the front delivery part and the rear delivery part There is a distance between the conveying parts to form a boosting space; the front conveying part is provided with a front conveying channel, and the rear conveying part is provided with a rear conveying channel; the front end of the front conveying part is connected with the first joint of the three-way luer joint, and the three-way luer The joint is connected with the front conveying channel; a sealing gasket is provided between the first joint and the front conveying passage, and a cross-shaped or straight-shaped cut is provided on the sealing gasket; the second connector of the three-way luer connector is used to connect the needle, the second connector and the first connector A connector, the front conveying channel and the rear conveying channel are in a straight line; the third connector of the three-way luer connector is connected with the connecting tube; the rear end of the rear conveying part is connected with the guide wire sheath, and the guide wire sheath is connected with the rear conveying channel.

However, in the process of guide wire conveying, it is often necessary to adjust the input angle of the guide wire. The angle adjustment method in the prior art can only simply adjust the angle in one direction, and when adjusting a larger angle, it needs to correspond to the operator's hand. Large-scale movement affects the comfort of the surgical procedure.

Therefore, it is necessary to provide an ergonomic medical delivery device that can easily adjust the guide wire delivery angle.

Summary of the invention

The object of the present invention is to provide a rotary fixing device on a surgical instrument and an incision surgical instrument with the rotary fixing device. By providing a device that expands the distance from the traction line to the central axis, the operator can bend at the operating end. It can be enlarged at the output part of the guide wire, so that the adjustment is more flexible.

The technical scheme of the present invention is realized as follows:

A medical delivery device capable of adjusting an angle includes a guide wire output part, a guide wire guide part, an adjustment control part and a traction wire. The guide wire guide part includes a guide housing which is symmetrically arranged along a central axis. The guide wire output portion can be bent relative to the guide wire guide portion, the guide wire output portion is provided with a guide wire output hole, one end of the pull wire is connected to the proximal end of the guide wire output portion, and the other end of the pull wire is connected to the adjustment control On the bending control member of the lower part, the distance from the other end of the traction line to the central axis is greater than the distance from one end of the traction line to the central axis. This arrangement makes the pulling wire at the distal end, that is, the distance between the end of the wire connecting the output part and the central axis is less than the distance between the other end of the pulling wire and the central axis on the adjustment control part. When the bending control part of the control part bends the first At one angle, the traction wire is driven to move the first distance. Correspondingly, the traction wire also moves the first distance at the end of the guide wire output part. Because the end of the traction wire is close to the central axis, the guide wire output part will bend the first distance. Two angles, the second angle is greater than the first angle.

Further, one end of the guide housing is provided with a first flexible bending piece, and one end of the first flexible bending piece is connected to the guide wire output part.

Further, the other end of the guide housing is provided with a pull line guide, the pull line guide includes an expansion part and a horizontal part arranged from the distal end to the proximal end, and the pull line passes through the inside of the guide housing and expands along the The outer surface of the section and the horizontal section are arranged.

Further, the expansion portion has a tapered surface, the horizontal portion has a cylindrical side surface, and the maximum outer diameter of the tapered surface is equal to the outer diameter of the cylindrical side surface.

Further, the expansion part is provided with a traction wire guide groove that matches with the traction wire.

Further, the adjustment control part includes a rotating shell, the rotating shell has a channel for the guide wire to pass through, one end of the rotating shell is fixedly connected with the guiding shell, the rotating shell is circumscribed with a rotating wheel, and the pulling wire guide is arranged on the The inside of the rotating shell is fixedly connected with the rotating shell.

Further, the number of the traction wires is N, N is greater than or equal to 3, and the two ends of the N traction wires are respectively arranged uniformly.

Further, a ray starting from one end of the traction line and perpendicular to the central axis is a first ray, and a straight line starting from the other end of the traction line and perpendicular to the central axis is a second ray, each The angle between the first ray and the second ray corresponding to the pulling line is 180°.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

1) The distance between the one end of the guide wire output part and the central axis is less than the distance between the other end of the pulling wire and the central axis on the adjustment control part. When the bending control part of the control part is bent by the first angle, the guide wire output part will be Bending the second angle, the second angle is greater than the first angle, the proximal control component can flexibly control the larger angle change of the distal end through a smaller angle change, and the surgical operation is more flexible;

2) The expansion part is provided to make the expansion and change of the traction line more stable, and the traction line guide groove allows the traction line to expand along the designated path;

3) By setting the number of traction wires greater than or equal to 3, multi-directional angle control can be performed, and the 360-degree bending of the guide wire output part can be realized through the cooperation of multiple traction wires;

4) By setting the traction wire from the distal end to the proximal end, the 180° rotation change along the central axis is carried out, so that the two ends of the traction wire are located on both sides of the central axis, and the guide wire output part can be realized when the bending control member is bent The bending in the same direction is more in line with the ergonomic design.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

Figure 2 is a schematic diagram of the connection structure between the guide wire output part and the guide wire guide part of the embodiment of the present invention;

Fig. 3 is a schematic diagram of a partially enlarged structure of the guide wire output part of the embodiment of the present invention;

Fig. 4 is a schematic diagram of the circuit of the guide wire output part after the outer shell is removed according to the embodiment of the present invention;

Fig. 5 is a schematic diagram of the connection structure of the distal end of the pull wire according to the embodiment of the present invention;

Fig. 6 is a structural diagram of the adjustment control part of the embodiment of the present invention with the fixed housing removed;

Fig. 7 is a schematic diagram of the structure of the traction wire on the adjustment control part according to the embodiment of the present invention;

Fig. 8 is a schematic diagram of the structure of Fig. 7 with the handle removed in the embodiment of the present invention;

FIG. 9 is a schematic diagram of the structure of the input and output terminals on the adjustment control part of the embodiment of the present invention;

Figure 10 is an enlarged view of the input and output components of the embodiment of the present invention;

Fig. 11 is a cross-sectional view of an adjustment control unit according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the drawings and specific embodiments.

Examples:

In this embodiment, the distal end refers to the end of the operator in principle when operating the instrument, the proximal end is the end closer to the operator when operating the instrument, and the central axis is roughly the central axis of the guide housing, but it is not limited to this. The axis can be understood as the central axis in this embodiment is a symmetrical central axis formed by the entire instrument body. The guide wire mentioned in the examples is the finger guide wire (or referred to as the guide wire) commonly used in surgery. As shown in Figs. 1-11, this embodiment provides a medical delivery device in which a proximal control component can flexibly control a large distal angle change through a small angle change, and the surgical operation is more flexible.

Specifically described in conjunction with the embodiments, a medical delivery device capable of adjusting an angle includes a guide wire output portion 1, a guide wire guide portion 2, an adjustment control portion 3, and a traction wire 4. The guide wire guide portion 2 includes a guide housing 21 that guides The housing 21 is arranged symmetrically along the central axis. The guide wire output portion 1 can be bent relative to the guide wire guide portion 2. The guide wire output portion 1 is provided with a guide wire output hole, and one end of the pulling wire 4 is connected near the guide wire output portion 1. The other end of the traction wire 4 is connected to the bending control member of the adjustment control part 3, and the distance from the other end of the traction wire 4 to the central axis is greater than the distance from one end of the traction wire 4 to the central axis.

In order to facilitate bending, in this embodiment, one end of the guide housing 21 is provided with a first flexible bending member 22, and one end of the first flexible bending member 22 is connected to the guide wire output portion 1 at one end.

In order to facilitate the expansion of the traction line, the other end of the guide housing 21 is provided with a traction line guide 6 which includes an expansion part 61 and a horizontal part 62 arranged from the distal end to the proximal end, and the traction line 4 passes through the guide shell The body 21 is arranged inside and along the outer surface of the expansion portion 61 and the horizontal portion 62.

Specifically, the expansion portion 61 has a tapered surface, the horizontal portion 62 has a cylindrical side surface, and the maximum outer diameter of the tapered surface is equal to the outer diameter of the cylindrical side surface. The expansion portion 61 is provided with a pulling wire guide groove 63 that matches with the pulling wire 4.

In order to facilitate the control of the guide wire output part to rotate in the axial direction, the adjustment control part 3 includes a rotating housing 33 which has a channel for the guide wire to pass through. One end of the rotating housing 33 is fixedly connected to the guide housing 21, and the rotating housing 33 is externally connected with The rotating wheel 34 and the traction wire guide 5 are arranged inside the rotating housing 33 and fixedly connected to the rotating housing 33.

Specifically, the number of traction wires 4 is N, where N is greater than or equal to 3, and the two ends of the N traction wires 4 are respectively arranged uniformly. A ray starting from one end of the traction line 4 and perpendicular to the central axis is the first ray, and a straight line starting from the other end of the traction line 4 and perpendicular to the central axis is the second ray. Each traction line 4 corresponds to the first ray and The angle of the second ray is 180°.

The application and function of this application in a specific device will be further described below in conjunction with the specific design of the overall structure: this embodiment describes a guide wire delivery device, the guide wire is specifically a finger guide wire for surgery, and the device of this embodiment is used for During the operation, the corresponding finger guide wire is delivered into the human body, so that the finger guide wire passes through the coronary artery stenosis or occlusion lesion to the distal end of the blood vessel, and provides a track for the balloon catheter or stent to be delivered to the stenosis lesion for compression and expansion.

Specifically, this embodiment includes a guide wire output portion 1, a guide wire guide portion 2, and an adjustment control portion 3 sequentially arranged from the distal end to the proximal end. The adjustment control portion 3 is used to control the orientation of the guide wire output portion 1, specifically It is used to control the rotation of the guide wire output portion 1 in the axial direction and the bending of the guide wire output portion 1 relative to the guide wire guide portion 2. The surgical finger guide wire enters the device of the present application through the guide wire input part 7, and after passing through the adjustment control part 3 and the guide wire guide part 2, it is finally output from the guide wire output hole 11 of the guide wire output part 1 and enters the human body pipeline. So as to realize the guidance function.

The principle of bending is as follows: one end of the pulling wire 4 is connected to the proximal end of the guide wire output part 1, the other end of the pulling wire 4 is connected to the bending control member 31 of the adjustment control part 3, and the guide wire guiding part 2 includes a guide shell Body 21. Here, for the convenience of description, the central axis of the guide housing 21 is taken as the central axis of the entire guide wire delivery device.

In order to facilitate the bending of the guide wire output portion 1 relative to the guide wire guide portion 2, a first flexible bending member 22 is provided at one end of the guide housing 21, and one end of the first flexible bending member 22 is connected to the guide wire output portion 2 to control the bending One end of the member 31 is connected with a second flexible bending member 32. The first flexible bending member 22 and the second flexible bending member 32 are both made of polymer elastic material and have a hollow structure. By controlling the bending of the bending control member 31, it drives the traction wire 4 to pull the distal guide wire output portion 1. Due to the distance difference generated by the multiple traction wires 4, the guide wire output portion 1 bends accordingly.

In this embodiment, preferably, the distance from the contact point of the traction wire 4 and the guide wire output portion 1 to the central axis is smaller than the distance from the contact point of the traction wire 4 and the bending control member 31 to the central axis.

This arrangement makes the pulling wire at the distal end, that is, the distance between the end of the wire connecting the output part and the central axis is less than the distance between the other end of the pulling wire and the central axis on the adjustment control part. When the bending control part of the control part bends the first At one angle, the traction wire is driven to move the first distance. Correspondingly, the traction wire also moves the first distance at the end of the guide wire output part. Because the end of the traction wire is close to the central axis, the guide wire output part will bend the first distance. Two angles, the second angle is greater than the first angle.

In order to realize that the distance between the contact point of the traction wire 4 and the guide wire output portion 1 to the central axis is smaller than the distance between the contact point of the traction wire 4 and the bending control member 31 and the central axis, specifically, in this embodiment, the other end of the guide housing 21 A pull wire guide 6 is provided. The pull wire guide 6 includes an expanded portion 61 and a horizontal portion 62 arranged from the distal end to the proximal end. The pull wire 4 passes through the inside of the guide housing 21 and runs along the expanded portion 61 and the horizontal portion 62. The outer surface is arranged.

The expansion portion 61 has a tapered surface, the horizontal portion 62 has a cylindrical side surface, and the maximum outer diameter of the tapered surface is equal to the outer diameter of the cylindrical side surface. The expansion portion 61 is provided with a traction line guide groove 63 that matches the traction line 4, so as to guide the direction of the traction line 4 more accurately, and the misalignment of the traction line 4 will not occur.

Further, the guide wire output portion 1 of this embodiment can also be rotated along the central axis. The specific implementation structure in this embodiment is: the adjustment control portion 3 includes a rotating housing 33, and the rotating housing 33 has a channel for the guide wire to pass through. One end of the rotating housing 33 is fixedly connected with the guide housing 21, the rotating housing 33 is circumscribed with a rotating wheel 34, and the pulling wire guide 5 is arranged inside the rotating housing 33 and is fixedly connected to the rotating housing 33. The operator drives the rotating housing 33 to rotate through the rotating wheel 34, thereby further driving the guide housing 21 until the guide wire output portion 1 rotates relative to the central axis, so that the distal guide wire output portion 1 of the device of this embodiment can not only bend The adjustment of the folding direction can also realize the adjustment of the rotation, which makes the adjustment more diversified and meets more needs of the operator.

The angle change from one end to the other end of the traction wire 4 is the first angle α. Optionally, the range of the first angle value is 170-190°, so that the angle is kept as close as possible to 180°, preferably 180°, that is, traction The connecting line between one end and the other end of the line 4 exactly intersects the central axis. In this way, when the handle is bent downward, the bending control member 31 of the adjustment control part 3 bends downward, driving the pulling wire 4 on the upper side to stretch, and correspondingly, the pulling wire on the lower side of the guide wire output part 1 , That is, the same pull wire on the upper side of the corresponding adjustment control part 3 is pulled proximally, which drives the guide wire output part 1 to also bend down synchronously. When the handle is bent upward, the guide wire output part 1 also goes up synchronously Bend.

Specifically, the reference line is used to more clearly define the above-mentioned change in the angle of the traction line. The ray starting from one end of the traction line 4 and perpendicular to the central axis is the first ray, and the other end of the traction line 4 is the starting point and is aligned with the central axis. The vertical straight line is the second ray, and the angle between the first ray and the second ray corresponding to each traction line 4 is 180°. That is, along the traction line from one end to the other end, the angle around the central axis is changed to 180°, which makes it more ergonomic. When the control part of the adjustment control part 3 is bent in more than one direction to pull the traction line 4 , One end of the traction wire 4 corresponding to the end of the guide wire output unit 1 is at the other end of the traction wire corresponding to the adjustment control unit 3 because it is located on both sides of the central axis, so when the traction wire 4 is pulled in a certain direction, the guide wire output unit 1 The bending control part on the adjustment control part 3 is bent in the same direction, which is more ergonomic.

The distal end of the guide wire output portion 1 is provided with a guide wire output hole 11, at least one illuminating device 12, and at least one image acquisition device 13. By providing the illuminating device 12 and the image acquisition device 13 on the distal end surface of the guide wire output portion 1, There are enough light sources for observation during the operation, and the internal influence can be continuously observed, and the equipment has a small structure;

Both the lighting device 12 and the image acquisition device 13 are connected to a power cord 14. The power cord 14 is used to provide the lighting device 12 and the image acquisition device 13 with electrical energy supplied by an external power source. The image acquisition device 13 is also connected to a data transmission line 15 for the data transmission line 15 It is connected to an external display device or a data collection device, and is used to transmit the image signal obtained by the image acquisition device. In this embodiment, the lighting device 12 is specifically LED lights, specifically three, and the image acquisition device 13 is one, and the four are evenly arranged, that is, the adjacent intervals of the four elements are all set at 90 degrees.

In order to cooperate with the above arrangement, the inside of the guide housing 21 is provided with a traction through hole, a wire through hole, and a guide wire conveying through hole for the traction wire 4 to pass through. The traction through hole, the wire through hole, and the guide wire conveying through hole can each be one or There are multiple traction through holes, wire through holes, and guide wire conveying through holes. Two or three of them can share a cavity, or they can be set independently.

The lighting device 12 and the image capturing device 13 are electrically connected to the input and output terminal 5 through the power line 14 and the data transmission line 15. The lighting device is preferably an LED lamp, and the image capturing device may be a miniature camera. Specifically, the input and output terminal 5 includes a power supply terminal 51 and the image data transmission terminal 52, the power supply terminal 51 is connected with a first conductive sheet group, the image data transmission terminal 52 is connected with a second conductive sheet group, the first conductive sheet group is in contact with the first conductive ring group, and the first conductive ring When the group rotates, the bias force generated by the first conductive sheet group through its own elastic deformation is always in contact with the first conductive ring group, and the conductive coil group is set to connect to the power supply terminal through the conductive sheet group, and the conductive sheet group’s own elastic deformation produces The bias force is always in contact with the corresponding conductive coil group, so that the conductive coil group and the corresponding wire can rotate together with the output part of the guide wire, while the input and output ends remain unchanged to facilitate connection to external devices;

The second conductive plate group is in contact with the second conductive ring group. When the second conductive ring group rotates, the second conductive plate group is always in contact with the second conductive ring group through the bias force generated by its own elastic deformation, and the power supply terminal 51 is in contact with the image. The data transmission terminals 52 are all fixedly connected with the fixed housing 35.

A plurality of conductive coil groups are provided with an external power supply terminal through the conductive sheet group, so that the conductive coil group and the corresponding wire can rotate together with the output part of the guide wire, while the input and output ends remain unchanged to facilitate connection to external devices;

The first conductive sheet group includes a neutral conductive sheet 511 and a live wire conductive sheet 512. The first conductive loop group includes a neutral conductive coil 513 and a live conductive coil 514 connected to the neutral conductive sheet 511 and the live conductive sheet 512, respectively. The line 14 includes a power neutral wire 141 and a power live wire 142, and the power neutral wire 141 and the power live wire 142 are respectively electrically connected to the neutral conductor coil 513 and the live conductor coil 514.

The connection between the power neutral wire 141 and the power live wire 142 and the neutral conductor coil 511 and the live wire conductive coil 512 can be one, and the power live wire 142 and the power neutral wire 141 are divided into multiple ones, which are connected to the lighting device 12 and the image acquisition device 13 respectively. Connect the power supply as an energy source. In other embodiments, one end of a plurality of neutral conductor coils 513 may be connected to the neutral conductor coil 513, and the other end may be electrically connected to a plurality of lighting devices 12 and an image acquisition device 13. One end of the live wire 142 is electrically connected to the live wire conductive coil 514, and the other end is electrically connected to the multiple lighting devices 12 and the image acquisition device 13 respectively. The second conductive ring group includes an image signal transmission ring 523, and the image signal transmission ring 523 is electrically connected to the data transmission line 15.

The second conductive sheet group is provided with an image signal transmission sheet 521, the second conductive ring group includes an image signal transmission ring 523, the image signal transmission sheet 521 is correspondingly connected to the image signal transmission ring 523, and the image signal transmission ring 523 is electrically connected to the data transmission line 15 .

The second conductive sheet group is provided with a control signal sheet 522, and the second conductive ring group further includes an image control signal transmission ring 524. The control signal sheet 522 is electrically connected to the image control signal transmission ring 524, and the image acquisition device 13 is also electrically connected to the image The control line 16, the image control line 16 is electrically connected to the image control signal transmission circle 5222 at the same time, the image control line 16 is used to transmit control signals to the image acquisition device 13, and the control signals are used to control the shooting angle and/or shooting of the image acquisition device 13 focal length.

The first conductive sheet group, the first conductive ring group, the second conductive sheet group, and the second conductive ring group are all made of conductive metal material or conductive alloy material. Further, the first conductive sheet group, the second conductive sheet group The materials of the conductive sheet group are all elastic metal materials, such as elastic iron sheets or copper sheets. The power line 14, the data transmission line 15, and the image control line 16 are common electrical signal transmission wires in the prior art. The power line is the most common wire for transmitting electrical energy. The data transmission line and the image control line can also be passed through common data lines. Electric signals are used to transmit data and instructions.

In other optional embodiments, the data transmission line 15 may also be electrically connected to a wireless transmitting device, and the wireless transmitting device is communicatively connected with the display device, so that the acquired image signal can be directly sent to the data receiving device or the display device that is communicatively connected to the wireless transmitting device. Device.

The purpose of arranging the conductive ring group is to make the power line, data transmission line and other lines arranged inside, when the device of the present application is rotated and adjusted along the central axis today, the power line and data transmission line can rotate together. However, since the output terminal 5 is to be electrically connected with some fixed equipment, such as a power supply, a display device, etc., the output terminal 5 preferably does not rotate with the rest of the rotation adjustment components, and the setting for this purpose is the conductive ring group .

Specifically, the adjustment control part 3 includes a rotating housing 33. The rotating housing 33 is a hollow structure with a channel for the guide wire to pass through. The rotating housing 33 is fixedly connected to the guide housing 21. The guide housing 21 and the rotating housing 33 are both provided with The space for accommodating the power line 14 and the data transmission line 15, specifically, the space is an accommodating cavity or a groove. In this embodiment, the guide housing 21 is provided with two circuit accommodating cavities for accommodating the data transmission line 15 and the power line 14 respectively, and the rotating housing 33 has a line groove 331 on the surface for accommodating the data transmission line 15 and the power line 14, and two line communication grooves 332 are respectively opened on both sides of the rotating shell 33, so that the transmission line 15 and the image control line 16 pass through the line on one side. The communication groove 332 passes through the rotating housing 33 and enters the line accommodating cavity. The power neutral line 141 and the power live line 142 of the power cord 14 can pass through the rotating housing 33 through the line communication groove 332 on the other side and enter the line accommodating cavity. A first conductive ring group 512 and a second conductive ring group 522 are provided between the rotating housing 33 and the fixed housing 35. The first conductive ring group 512 and the second conductive ring 522 are both fixedly connected to the rotating housing 33, and the power cord 14 is connected to the first conductive ring group 522. A conductive ring group 512 is electrically connected, the data transmission line 15 is electrically connected to the second conductive ring group 522, the first conductive ring group 512 is electrically connected to the power supply terminal 51, and the second conductive ring group is electrically connected to the image data transmission terminal 52.

The rotating shell 33 is circumscribed with a rotating wheel 34, and a fixed shell 35 is sleeved on the outside. The fixed shell 35 has an opening for the rotating wheel 34 to pass through. The rotating shell 33 can rotate relative to the fixed shell 35. The fixed housing 35 is convenient to hold.

The adjustment control part 3 also includes a handle 36. One end of the handle 36 has a handle ferrule 361. The handle ferrule 361 and the shell of the handle 36 are integrally formed. The control member 31 and the handle ferrule 361 can mutually rotate in the direction along the central axis.

The adjustment control part also includes a locking ring 38 and a limit sleeve 37. The limit sleeve 37 is sleeved on the handle ferrule 361. The inner surface of the limit sleeve 37 matches the outer surface of the handle ferrule 361. There are 38 locking rings. The conical inner surface of the locking ring 38 and the conical outer surface of the confining sleeve 37 are matched with each other.

The limiting sleeve 37 is made of elastic material, and the tapered inner surface of the locking ring 38 and the tapered outer surface of the limiting sleeve 37 are threadedly matched.

The above arrangement enables the bending control member 31 and the handle sleeve 361 to rotate in the direction of the central axis when the rotating wheel 34 is adjusted. Therefore, the handle does not need to rotate together during the rotation adjustment. The clamping portion 311 of the bending control member 31 is provided in the handle sleeve 361, and the handle can drive the clamping portion 311 of the bending control member 31 to bend with respect to the central axis direction, thereby driving the guide wire output end 1 to bend. The handle 36 can rotate coaxially with respect to the clamping portion 311, and the two are relatively fixed in axial direction. Therefore, the handle 36 will not fall off from the clamping joint 311, and is integrally formed with the housing of the handle 36, and is indirectly fixed to the clamping portion 311. connection. The limit sleeve 37 is sleeved on the handle ferrule 361. When the limit sleeve 37 shrinks inward, the limit sleeve 37 and the handle ferrule 361 generate a relatively large friction, so the handle ferrule 361 can be fixed to a certain Angle, that is, when the bending control member 31 drives the second flexible bending member 32 to rotate to a certain angle, the bending angle of the bending control member 31 is fixed by controlling the shrinkage of the limit sleeve 37, thereby also fixing the distal end The bending angle of the guide wire output part 1.

The shrinkage of the limit sleeve 37 is controlled by the limit ring sleeved on the limit sleeve 37, the locking ring 38 is sleeved on the limit sleeve 37, and the tapered inner surface of the locking ring 38 and the limit sleeve 37 The tapered outer surfaces are matched, and the two are screwed together, so that when the shrink lock ring 38 is rotated, the lock ring 38 moves axially relative to the limiting sleeve, so that the limiting sleeve 37 shrinks inwardly or according to itself through the tapered fit. The elastic restoring force returns to expansion.

The handle ferrule 361 is made of elastic material, and the outer surface of the handle ferrule 361 and the inner surface of the adjusting limit sleeve 37 are in shape matching. When the adjusting limit sleeve 37 moves proximally, the squeezing handle ferrule 361 shrinks inwardly. Optionally, the handle ferrule 361 has a tapered outer surface, and the adjustment limit sleeve 37 has a tapered inner surface. When the two move relative to each other, the adjustment limit sleeve 37 has a tapered inner surface and the handle ferrule 361 has a tapered shape. The outer surface is squeezed to deform it, thereby fixing the handle 36 relative to the clamping joint 311, and further fixing the direction of the guide wire output portion 1 at a certain angle.

In this embodiment, the distance from the outer surface of the handle ferrule 361 to the central axis increases from the proximal end to the distal end and then becomes smaller. The shape of the inner surface of the adjustment limit sleeve 37 matches the outer surface of the handle ferrule 361, so when the handle ferrule When 361 moves to the distal end, it further compresses the outer surface of the handle ferrule. Preferably, the outer surface of the handle ferrule 361 is threadedly fitted with the inner surface of the adjustment limit sleeve 37.

As above, we have described the purpose of the present invention completely, but the present invention is not limited to the above-mentioned embodiments and implementation methods, and the features of the embodiments can be combined with each other without contradicting each other. Practitioners in the relevant technical fields can make various changes and implementations within the scope permitted by the technical idea of the present invention.

Claims

A medical delivery device capable of adjusting an angle, characterized in that it comprises a guide wire output part (1), a guide wire guide part (2), an adjustment control part (3) and a pulling wire (4). The guide wire guide part (2) It includes a guide housing (21), the guide housing (21) is symmetrically arranged along the central axis, the guide wire output portion (1) can be bent relative to the guide wire guide portion (2), so The guide wire output part (1) is provided with a guide wire output hole, one end of the pulling wire (4) is connected to the proximal end of the guide wire output part (1), and the other end of the pulling wire (4) is connected to the adjustment control part (3). On the bending control member, the distance from the other end of the traction wire (4) to the central axis is greater than the distance from one end of the traction wire (4) to the central axis.
The medical delivery device capable of adjusting the angle according to claim 1, wherein one end of the guide housing (21) is provided with a first flexible bending member (22), and the first flexible bending member (22) ) One end is connected to the guide wire output part (1).
The medical delivery device capable of adjusting the angle according to claim 1, wherein the other end of the guide housing (21) is provided with a pull wire guide (6), and the pull wire guide (6) includes a distal end The expansion part (61) and the horizontal part (62) are arranged proximally, and the pulling wire (4) passes through the inside of the guide housing (21) and runs along the expansion part (61) and the horizontal part (62). Outer surface layout.
The medical delivery device capable of adjusting an angle according to claim 3, wherein the expansion portion (61) has a tapered surface, the horizontal portion (62) has a cylindrical side surface, and the tapered surface The maximum outer diameter is equal to the outer diameter of the cylindrical side surface.
The medical delivery device capable of adjusting the angle according to claim 3, characterized in that the expansion part (61) is provided with a traction wire guide groove (63) matching the traction wire (4).
The medical delivery device capable of adjusting the angle according to claim 3, characterized in that the adjustment control part (3) comprises a rotating housing (33), and the rotating housing (33) has a channel for the guide wire to pass through. One end of the rotating shell (33) is fixedly connected to the guide shell (21), the rotating shell (33) is externally connected with a rotating wheel (34), and the pulling wire guide (5) is arranged inside the rotating shell (33) and is connected with The rotating housing (33) is fixedly connected.
The medical delivery device capable of adjusting the angle according to claim 1, wherein the number of the pulling wires (4) is N, N is greater than or equal to 3, and both ends of the N pulling wires (4) Distributed uniformly respectively.
The medical delivery device capable of adjusting the angle according to claim 1 or 3, characterized in that a ray starting from one end of the traction line (4) and perpendicular to the central axis is the first ray, and the first ray is The other end of the traction line (4) is a starting point and a straight line perpendicular to the central axis is a second ray, and the angle between the first ray and the second ray corresponding to each traction line (4) is 180°.