CN213852679U

CN213852679U - Thread guiding device

Info

Publication number: CN213852679U
Application number: CN202022522351.2U
Authority: CN
Inventors: 周刚; 武志明; 虞奇峰; 秦涛
Original assignee: Shanghai Newmed Medical Co Ltd
Current assignee: Shanghai Newmed Medical Co Ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-08-03
Anticipated expiration: 2030-11-04

Abstract

The utility model provides a seal wire device, include: an inner tube having external threads; at least two guide wires passing through the inner tube; the pushing outer pipe is sleeved on the outer wall of the inner pipe; an adjusting device, connect in the one end of propelling movement outer tube, adjusting device has adjustable internal thread clamp, the internal thread clamp have with the external screw thread meshing's of inner tube first state and with the second state of external screw thread separation. The utility model discloses can ensure to provide multidirectional holding power behind many seal wires entering atrium or the ventricle, and the head end protects atrium or ventricle when providing sufficient holding power.

Description

Thread guiding device

Technical Field

The utility model relates to a wicresoft medical instrument field, specifically speaking relates to seal wire device.

Background

Valvular heart disease and dysfunction are major causes of disability, decreased quality of life, and premature death in patients with cardiovascular disease worldwide. At present, heart valve diseases involve aortic valves, mitral valves and tricuspid valves, and aiming at the heart valve diseases, a plurality of treatment means, such as valve repair, valve replacement, annulus contraction and the like, need to reach a diseased part for treatment by means of interventional instruments such as guide wires, catheters and the like in any treatment means, and a common guide wire for valve implantation comprises a J-shaped guide wire, a straight-head transvalvular guide wire, a superhard guide wire and a PTCA (percutaneous transluminal coronary intervention) guide wire, wherein the superhard guide wire is mainly used for valve delivery, balloon dilation delivery, implantation of a covered stent after peripheral vascular complications and the like.

Therefore, the utility model provides a seal wire device.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide a wire device has overcome prior art's difficulty, can ensure that many seal wires provide multidirectional holding power after getting into atrium or ventricle, and the head end protects atrium or ventricle when providing sufficient holding power.

An embodiment of the utility model provides a wire device, include:

an inner tube having external threads;

at least two guide wires passing through the inner tube;

the pushing outer pipe is sleeved on the outer wall of the inner pipe; and

an adjusting device, connect in the one end of propelling movement outer tube, adjusting device has adjustable internal thread clamp, the internal thread clamp have with the external screw thread meshing's of inner tube first state and with the second state of external screw thread separation.

Preferably, the inner tube is a multi-lumen inner tube, each guide wire passing through a respective lumen in the multi-lumen inner tube.

Preferably, the inner tube is a single lumen inner tube, and the guide wires collectively pass through the lumen of the single lumen inner tube.

Preferably, the inner tube includes implantation end and with the propelling movement end that the implantation end deviates from, the external screw thread is from the propelling movement end to the implantation end extends, and the length of external screw thread in the direction of extending is less than the length of inner tube.

Preferably, the guide wire enters the inner tube from the pushing end of the inner tube and is partially exposed out of the implanting end of the inner tube;

the pushing outer tube at least covers part of the inner tube and part of the guide wire exposed out of the inner tube.

Preferably, adjusting device is inside to be equipped with and to surround governing valve upper cover and the governing valve lower cover that forms the internal thread clamp, the both ends of governing valve upper cover and governing valve lower cover are through first spring and second spring elastic connection, through pressing down governing valve upper cover and governing valve lower cover change adjusting device 4 and the meshing or the detached state of inner tube.

Preferably, the adjusting device further comprises a first button and a second button exposed outside the housing of the adjusting device, and the first button and the second button respectively abut against the upper cover and the lower cover of the adjusting valve.

Preferably, when the first button and the second button are in a reset state, the regulating valve upper cover and the regulating valve lower cover are enclosed to form an internal thread hoop to be meshed with the external thread of the inner pipe, and the pushing outer pipe is meshed with the inner pipe through threads;

or when the first button and the second button are in a pressed state, the upper cover and the lower cover of the regulating valve are separated from the external thread of the inner pipe, and the pushing outer pipe slides along the inner pipe.

Preferably, the guide wire is any one of a straight guide wire, a J-head guide wire and a spiral guide wire.

Preferably, the bending direction of each guide wire inserted into the inner tube deviates from the axial direction of the inner tube.

The utility model discloses a wire device can ensure that many seal wires provide multidirectional holding power after getting into atrium or ventricle, and the head end protects atrium or ventricle when providing sufficient holding power.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a schematic view of the yarn guide device according to the present invention in use.

Fig. 2 is a cross-sectional view taken along the line a-a in fig. 1.

Fig. 3 is a sectional view of the implanted portion of the guide wire device of the present invention after assembly.

Fig. 4 is a schematic view of the pushing outer tube of the yarn guiding device of the present invention.

Fig. 5 is a schematic view of an adjusting device of the yarn guiding device according to the present invention.

Reference numerals

1 inner pipe

11 first chamber

12 second chamber

13 third Chamber

14 external screw thread

2 pushing the outer tube

3 guide wire

4 adjusting device

41 regulating valve upper cover

42 regulating valve lower cover

43 first spring

44 second spring

45 first button

46 second push button

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

Fig. 1 is a schematic view of the yarn guide device according to the present invention in use. Fig. 2 is a cross-sectional view taken along the line a-a in fig. 1. Fig. 3 is a sectional view of the implanted portion of the guide wire device of the present invention after assembly. The utility model discloses a seal wire device, include: an inner tube 1 with an external thread 14, at least two guide wires 3, a pushing outer tube 2 and an adjusting device 4. Seal wire 3 passes inner tube 1, and propelling movement outer tube 2 cup joints in 1 outer wall of inner tube, and adjusting device 4 is connected in the one end of propelling movement outer tube 2, and adjusting device 4 has adjustable internal thread clamp, and the internal thread clamp have with the first state of the 14 meshing of the external screw thread of inner tube 1 and with the second state of the 14 separation of external screw thread, the utility model discloses in realized the accurate control to seal wire 3 states in the inner tube 1 through the position control to propelling movement outer tube 2.

In a preferred embodiment, the inner tube 1 is a multi-lumen inner tube, and each of the guide wires 3 passes through a lumen of the multi-lumen inner tube, but not limited thereto.

In a preferred embodiment, the inner tube 1 is a single lumen inner tube, and the guide wires 3 collectively pass through the lumen of the single lumen inner tube, but not limited thereto.

In a preferred embodiment, the inner tube 1 includes an implantation end and a pushing end opposite to the implantation end, the external thread 14 extends from the pushing end to the implantation end, and the length of the external thread 14 in the extending direction is smaller than the length of the inner tube 1, but not limited thereto.

In a preferred embodiment, the guide wire 3 enters the inner tube 1 from the pushing end of the inner tube 1 and is partially exposed out of the implanting end of the inner tube 1; the pushing outer tube 2 at least covers the local inner tube 1 and the local guide wire 3 exposed out of the inner tube 1, the opening effect of the guide wire 3 can be controlled through the advancing and retreating length of the pushing outer tube 2, the guide wire 3 gradually and slowly opens along with the spiral retreating of the pushing outer tube 2 along the external thread 14, and the accurate control on the opening speed of the guide wire 3 is improved, but not limited to this.

In a preferred embodiment, the guide wire 3 is any one of a straight guide wire, a J-tip guide wire, and a helical guide wire, but not limited thereto.

In a preferred embodiment, the bending direction of each guide wire inserted into the inner tube 1 by the guide wires 3 is away from the axial direction of the inner tube 1, so as to form a better and uniform expansion effect and facilitate the implantation of a subsequent valve, but not limited thereto.

Fig. 4 is a schematic view of the pushing outer tube of the yarn guiding device of the present invention. Fig. 5 is a schematic view of an adjusting device of the yarn guiding device according to the present invention. As shown in fig. 4 and 5, the utility model discloses well adjusting device 4 is inside to be equipped with and to surround governing valve upper cover 41 and the governing valve lower cover 42 that forms the internal thread clamp, and the both ends of governing valve upper cover 41 and governing valve lower cover 42 are through first spring 43 and second spring 44 elastic connection, can change the meshing or the detached state of adjusting device 4 and inner tube through pressing down governing valve upper cover 41 and governing valve lower cover 42.

In a preferred embodiment, a first button 45 and a second button 46 are included, which are exposed outside the housing of the adjustment device 4, the first button 45 and the second button 46 abutting the upper adjustment valve cover 41 and the lower adjustment valve cover 42, respectively. When the first button 45 and the second button 46 are in the reset state, the regulating valve upper cover 41 and the regulating valve lower cover 42 surround to form an internal thread hoop to be meshed with the external thread 14 of the inner pipe 1, and the pushing outer pipe 2 is meshed with the inner pipe 1 through threads; alternatively, when the first button 45 and the second button 46 are in the pressed state, the regulator valve upper cap 41 and the regulator valve lower cap 42 are separated from the external thread 14 of the inner tube 1, and the push outer tube 2 is slid along the inner tube 1.

The embodiment provides a superhard guide wire device for guiding valve implantation, which is used for guiding a delivery system carrying a valve to enter a human body to reach a diseased region to implant the valve, wherein an inner tube 1 can be provided with 3 cavities or more for loading superhard guide wires 3 (in the embodiment, the superhard guide wires with high strength are adopted as the guide wires 3), the embodiment adopts 3 cavities for description, the superhard guide wires 3 are respectively arranged in a first cavity 11, a second cavity 12 and a third cavity 13, and the inner tube 1 is not designed with full threads because the front section stroke belongs to a free section in the actual movement process, the thread constraint is not needed, and the length of specific threads is adjusted and designed according to the actual stroke; an adjusting device 4 with a first button 45 and a second button 46 is arranged on the pushing outer tube 2, and the thread design of the inner cavity of the adjusting device 4 is assembled with the inner tube 1; the adjusting device 4 is provided with a first spring 43, a second spring 44, an adjusting valve upper cover 41 and an adjusting valve lower cover 42.

The valve is implanted when the delivery system for guiding the valve-carrying body into the body to the lesion. Firstly carry out the screw assembly with propelling movement outer tube 2 and inner tube 1, the head end of propelling movement outer tube 2 is higher than 1 head end of inner tube, and follow the inner chamber way of inner tube 1 with superhard seal wire 3 and penetrate to the seal wire head end does not stretch out in propelling movement outer tube 2 but is higher than 1 head end of inner tube, makes propelling movement outer tube 2 can restrict and expose in the partial superhard seal wire 3 of 1 head end of inner tube.

Then the whole guiding device reaches the position of pathological changes of a patient along the blood vessel, the pushing outer tube 2 is rotated, the pushing outer tube 2 is slowly withdrawn, the head end of the superhard guide wire 3 is exposed in the ventricle or the atrium and plays a sufficient supporting role by a plurality of heads, and simultaneously, the wall of the ventricle or the atrium is prevented from being punctured due to the flexibility of the head end of the superhard guide wire 3.

And finally, the superhard guide wire 3 is released and reaches a corresponding position, the outer tube is withdrawn and pushed, and the outer tube 2 is withdrawn and pushed in two ways:

firstly, the adjusting device 4 is matched with the thread of the inner pipe 1 to rotate and slowly retract. In the first mode, the pushing outer tube 2 is slowly withdrawn along the external thread spiral, which is helpful for accurately controlling the opening state of the superhard guide wire 3.

Two, press first button 45 and second button 46 simultaneously, make first button 45 and second button 46 drive governing valve upper cover 41, governing valve lower cover 42 extrudes first spring and second spring respectively, governing valve upper cover 41 and governing valve lower cover 42 are backed up under the elastic action, destroy internal thread clamp structure after, thereby make adjusting device 4 and the separation of inner tube 1 let propelling movement outer tube 2 can follow inner tube 1 and withdraw fast, can operate according to actual demand. The propelling movement outer tube 2 can directly follow 1 roll-off of inner tube in the second mode for the exit velocity of propelling movement outer tube 2 has also avoided propelling movement outer tube 2 rotatory time to the rotation that the sick limit was gone out to drag. After the outer tube 2 is pushed to completely withdraw from the inner tube 1, the conveying system can reach the lesion position under the guidance of the inner tube 1 for valve implantation.

To sum up, the utility model aims at providing a seal wire device can ensure that many seal wires provide multidirectional holding power after getting into atrium or ventricle, and the head end protects atrium or ventricle when providing sufficient holding power.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A guidewire device, comprising:

an inner tube (1) having an external thread (14);

at least two guide wires (3), the guide wires (3) passing through the inner tube (1);

the pushing outer pipe (2) is sleeved on the outer wall of the inner pipe (1); and

an adjusting device (4) is connected to one end of the pushing outer tube (2), the adjusting device (4) has an adjustable internal thread clamp, the internal thread clamp has a first state of engagement with the external thread (14) of the inner tube (1) and a second state of disengagement with the external thread (14).

2. A guide wire device according to claim 1, wherein the inner tube (1) is a multi-lumen inner tube, each guide wire (3) passing through a respective lumen in the multi-lumen inner tube.

3. The guide wire device according to claim 1, wherein the inner tube (1) is a single lumen inner tube, and the guide wires (3) are commonly passed through the lumen of the single lumen inner tube.

4. The guide wire device according to claim 1, characterized in that the inner tube (1) comprises an implantation end and a pushing end facing away from the implantation end, the external thread (14) extending from the pushing end to the implantation end, and the length of the external thread (14) in the direction of extension being smaller than the length of the inner tube (1).

5. The guide wire device according to claim 4, characterized in that the guide wire (3) enters the inner tube (1) from the pushing end of the inner tube (1) and is partially exposed to the implanting end of the inner tube (1);

the pushing outer tube (2) at least covers part of the inner tube (1) and part of the guide wire (3) exposed out of the inner tube (1).

6. The guide wire device according to claim 1, wherein the adjusting device (4) is internally provided with an adjusting valve upper cover (41) and an adjusting valve lower cover (42) which surround to form an internal thread clamp, both ends of the adjusting valve upper cover (41) and the adjusting valve lower cover (42) are elastically connected through a first spring (43) and a second spring (44), and the engaging or disengaging state of the adjusting device (4) with the inner tube is changed by pressing the adjusting valve upper cover (41) and the adjusting valve lower cover (42).

7. The guide wire device according to claim 6, further comprising a first button (45) and a second button (46) exposed outside a housing of the adjusting device (4), the first button (45) and the second button (46) abutting the adjusting valve upper cover (41) and the adjusting valve lower cover (42), respectively.

8. The guide wire device according to claim 7, wherein when the first button (45) and the second button (46) are in the reset state, the regulating valve upper cover (41) and the regulating valve lower cover (42) surround to form an internal thread clamp to be engaged with the external thread (14) of the inner tube (1), and the pushing outer tube (2) is in threaded engagement with the inner tube (1);

or when the first button (45) and the second button (46) are in a pressed state, the regulating valve upper cover (41) and the regulating valve lower cover (42) are separated from the external thread (14) of the inner pipe (1), and the pushing outer pipe (2) slides along the inner pipe (1).

9. The guide wire device according to claim 1, wherein the guide wire (3) is any one of a straight-headed guide wire, a J-headed guide wire, and a helical guide wire.

10. The guide wire device according to claim 1, wherein each of the guide wires inserted into the inner tube (1) is bent in a direction away from an axial direction of the inner tube (1).