CN112245802A

CN112245802A - Guide wire handle and implantable medical system

Info

Publication number: CN112245802A
Application number: CN202011111753.1A
Authority: CN
Inventors: 宋春辉; 王航
Original assignee: Beijing Pins Medical Co Ltd
Current assignee: Beijing Pins Medical Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-22
Anticipated expiration: 2040-10-16
Also published as: CN112245802B; WO2022077776A1

Abstract

The embodiment of the invention discloses a guide wire handle and an implantable medical system, wherein the guide wire handle comprises a guide wire and a handle, the guide wire is used for being connected with an electrode, the handle comprises a fixed section and a movable section, the fixed section is fixedly connected with the guide wire, the fixed section is far away from the electrode, the movable section is rotatably connected with the fixed section, and the movable section is provided with an accommodating cavity for accommodating the electrode. Therefore, when the electrode is required to be tested, the movable section can be rotated to expose the electrode, the guide wire does not need to be pulled out, the testing accuracy can be improved, and meanwhile, the movable section is connected with the electrode when the electrode is implanted, so that the electrode can be assisted to be implanted.

Description

Guide wire handle and implantable medical system

Technical Field

The invention relates to the technical field of implantable medical devices, in particular to a guide wire handle and an implantable medical system.

Background

Implantable medical systems typically include implantable electrical nerve stimulation systems, implantable cardiac stimulation systems, implantable drug infusion systems, and the like. Taking the implanted electrical nerve stimulation system as an example, the implanted electrical nerve stimulation system includes a deep brain electrical stimulation system, a sacral nerve electrical stimulation system, a spinal cord electrical stimulation therapy system, a vagus nerve electrical stimulation system, and the like. The implanted part of the implanted nerve electrical stimulation system generally comprises an electrode, an extension lead and a pulse generator, wherein the pulse generator sends an electric pulse, the extension lead transmits the electric pulse to the electrode, and the electrode stimulation end electrically stimulates a specific nerve or a nucleus so as to achieve the effect of controlling the symptoms of a specific disease.

In the electrode implantation operation of the existing implantable electrical nerve stimulation system, a guide wire is generally used to assist the implantation of the electrode. Specifically, a guide wire is axially inserted into an axial cavity of the electrode to the position of an electrode stimulation end, and then the guide wire is fixedly connected with the electrode to form a whole through a handle at the tail end of the guide wire, so that the guide wire plays a role in supporting and ensuring the straightness of the electrode, and the implantation of the electrode is assisted. However, during the electrode implantation process, it is necessary to confirm whether the electrode implantation position is the optimal position by the test stimulation, and in the process, the electrode needs to be connected with the test cable to be connected with the tester. In the process of connecting the electrode connecting end with the test cable, the guide wire handle shields the connecting point of the electrode connecting end, so that the electrode connecting end can be inserted into the test slot of the test cable only by pulling out the inserted guide wire for a certain distance, and the contact point of the electrode stimulating end can be shifted in the process, so that the test effect is influenced.

Disclosure of Invention

In view of this, embodiments of the present invention provide a guidewire handle and an implantable medical system, which facilitate testing of an electrode.

In a first aspect, embodiments of the present invention provide a guide wire handle for assisting in implantation of an electrode, the guide wire handle comprising a guide wire and a handle; the guide wire is used for being connected with the electrode; the handle comprises a fixed section and a movable section, the fixed section is fixedly connected with the guide wire and far away from the electrode, the movable section is rotatably connected with the fixed section, and the movable section is provided with an accommodating cavity for accommodating the electrode.

Further, the movable section is configured to rotate to a closed position to at least partially accommodate the electrode in the accommodating cavity and rotate to an open position to completely expose the electrode.

Further, the handle still includes the pivot, the pivot perpendicular to the seal wire, the fixed section with the activity section passes through the pivot is connected.

Further, the movable section has a first open end, the fixed section has a second open end, and the first open end is opposite to the second open end when the movable section rotates to the closed position.

Further, one of the first open end and the second open end has a buckle, and the other has a slot corresponding to the buckle, and when the movable section rotates to the closed position, the buckle and the slot are connected with each other.

Further, the handle has a bending structure, and the movable section is connected with the fixed section through the bending structure.

Further, the movable section, the fixed section and the bending structure are integrally formed.

Further, the fixing section has a first fixing groove extending in an implantation direction of the electrode and a second fixing groove perpendicular to the first fixing groove, the first fixing groove communicates with the second fixing groove, and the guide wire is fixed in the first fixing groove and the second fixing groove.

Further, the inner wall of the accommodating cavity is provided with a protrusion, and the protrusion is configured to fix the electrode.

In a second aspect, embodiments of the present invention also provide an implantable medical system, including a guidewire handle as described in the first aspect.

The embodiment of the invention provides a guide wire handle and an implantable medical system, wherein the guide wire handle comprises a guide wire and a handle, the guide wire is used for being connected with an electrode, the handle comprises a fixed section and a movable section, the fixed section is fixedly connected with the guide wire, the fixed section is far away from the electrode, the movable section is rotatably connected with the fixed section, and the movable section is provided with an accommodating cavity for accommodating the electrode. Therefore, when the electrode is required to be tested, the movable section can be rotated to expose the electrode, the guide wire does not need to be pulled out, the testing accuracy can be improved, and meanwhile, the movable section is connected with the electrode when the electrode is implanted, so that the electrode can be assisted to be implanted.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a front view of a guidewire handle with an active segment in a closed position according to embodiments of the present invention;

FIG. 2 is a right side view of a guidewire handle with the active segment in a closed position according to embodiments of the present invention;

FIG. 3 is a front view of a guidewire handle with an active segment in an open position according to embodiments of the invention;

FIG. 4 is a right side view of a guidewire handle with an active segment in an open position according to embodiments of the present invention;

FIG. 5 is an enlarged partial schematic view at A of a guidewire handle according to embodiments of the invention;

FIG. 6 is an enlarged partial schematic view at B of a guidewire handle according to embodiments of the invention;

FIG. 7 is a first schematic view of a guidewire handle during testing of an electrode according to an embodiment of the present invention;

FIG. 8 is a second schematic view of a guidewire handle of an embodiment of the present invention during testing of the electrode;

FIG. 9 is a front view of another guidewire handle of an embodiment of the present invention with the movable section in the closed position;

FIG. 10 is a right side view of another guidewire handle of an embodiment of the present invention with the movable section in the closed position;

FIG. 11 is a front view of another guidewire handle of an embodiment of the present invention with the movable section in an open position;

FIG. 12 is a right side view of another guidewire handle of an embodiment of the present invention with the movable section in the open position;

FIG. 13 is an enlarged partial schematic view at C of another guidewire handle in accordance with embodiments of the invention;

FIG. 14 is a first schematic view of another embodiment of a guidewire handle during testing of an electrode according to the present invention;

fig. 15 is a second schematic view of another embodiment of a guidewire handle of the present invention during testing of the electrode.

Description of reference numerals:

1-guide wire; 2-a handle; 21-a fixed segment; 211-a second open end; 22-active segment; 221-an accommodating cavity; 222-a bump; 223-a first open end; 23-a rotating shaft; 24-a stationary section; 25-active segment; 251-an accommodating cavity; 252-a bump; 26-a bent structure; 271-a first fixation groove; 272-a second fixation slot; 28-buckling; 29-card slot; 3-an electrode; 4-a tester.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Fig. 1 to 15 are schematic structural views of a guide wire handle according to an embodiment of the present invention, in which fig. 5 is a partially enlarged view at a in fig. 1; fig. 6 is a partially enlarged schematic view of a portion B in fig. 2, and fig. 13 is a partially enlarged schematic view of a portion C in fig. 10. As shown in fig. 1 to 15, the guide wire handle of the embodiment of the present invention includes a guide wire 1 and a handle 2, the guide wire 1 is used for connecting with an electrode 3, and the handle 2 is connected with the guide wire 1. The handle 2 comprises a fixed section 21/24 and a movable section 22/25, the fixed section 21/24 is fixedly connected with the guide wire 1 and is far away from the electrode 3, the movable section 22/25 is connected with the fixed section 21/24 and can rotate relative to the fixed section 21/24, and the movable section 22/25 is provided with an accommodating cavity 221/251 for accommodating the electrode 3. When the movable section 22/25 rotates to the closed position relative to the fixed end, the electrode 3 is at least partially accommodated in the accommodating cavity 221/251; when the movable section 22/25 is rotated to the open position, the electrode 3 is fully exposed and the electrode 3 is removed from the receiving cavity 221/251. The guide wire handle is connected with the electrode 3 and used for providing a certain supporting force for the electrode 3, and the auxiliary electrode 3 is implanted into a human body.

The guidewire handle of embodiments of the present invention may be used in an implantable medical system (not shown) that includes at least one guidewire handle of embodiments of the present invention.

The guide wire 1 is a coated wire. The guide wire 1 is connected with an electrode 3, specifically, the guide wire 1 is arranged in the tubular electrode 3 in a penetrating way, and the electrode 3 is used for conducting an electric pulse signal to a specific nerve for electric stimulation.

The handle 2 may be made of a material having high biocompatibility and a certain strength to provide a good supporting force to the electrode 3. Referring to fig. 6 and 13, preferably, the inner wall of the accommodation chamber 221/251 has a protrusion 222/252 for fixing the electrode 3. The two opposite side walls of the accommodating cavity 221/251 are provided with a pair of corresponding protrusions 222/252, the distance between the protrusions 222/252 is equal to or slightly smaller than the diameter of the electrode 3, when the electrode 3 is placed in the accommodating cavity 221/251, the protrusions 222/252 can fix the electrode 3, the supporting force of the wire guide handle on the electrode 3 can be improved, and the separation of the movable section 22/25 from the electrode 3 when the electrode 3 is implanted is avoided. As required, the accommodating cavity 221/251 can be provided with a plurality of pairs of protrusions 222/252 at intervals along the implantation direction of the electrode 3, so that the electrode 3 can be better fixed.

Fig. 1-8 are schematic structural views of a guidewire handle according to embodiments of the invention. As shown in fig. 1-8, in an alternative embodiment, the handle 2 further includes a rotating shaft 23, the rotating shaft 23 is perpendicular to the guide wire 1, and the fixed section 21 and the movable section 22 are connected by the rotating shaft 23. Specifically, the rotating shaft 23 is disposed at an end of the fixed section 21 away from the electrode 3, and an end of the movable section 22 is connected to the fixed section 21 through the rotating shaft 23. The movable section 22 can rotate around the rotation shaft 23, i.e. the movable section 22 can rotate around the fixed section 21 and the guide wire 1 connected to the fixed section 21. Further, both the movable section 22 and the fixed section 21 have one side opened, the movable section 22 has a first opened end 223, and the fixed section 21 has a second opened end 211. The length of the movable section 22 is greater than that of the fixed section 21, when the movable section 22 rotates to the closed position, the first open end 223 is opposite to the second open end 211, that is, a part of the movable section 22 is spliced with the fixed section 21 to form a relatively closed space to surround the periphery of a section of the guide wire 1, and the rest part of the movable section 22 extends along the directions of the guide wire 1 and the electrode 3 and surrounds one side of the electrode 3, so that a certain supporting force is provided for the electrode 3, the electrode 3 can be conveniently implanted, and meanwhile, the exposed part of the electrode 3 can apply electric stimulation to a target nerve. Preferably, the portion of the movable segment 22 corresponding to the second open end 211 may be provided with a recess, and when the movable segment 22 needs to be opened, the movable segment 22 may be easily separated from the fixed segment 21 by grasping the recess.

Further, the movable section 22 and the fixed section 21 can be provided with corresponding fixed structures, when the movable section 22 rotates to the closed position, the movable section 22 and the fixed section 21 can be connected through the corresponding fixed structures, and the movable section 22 is prevented from being separated when the electrode 3 is implanted, so that the normal operation of the operation is prevented from being influenced. Referring to fig. 5, optionally, one of the first open end 223 and the second open end 211 has a catch 28, and the other has a catch groove 29 corresponding to the catch 28. When the movable section 22 is rotated to the closed position, the catch 28 is disposed in the catch 29, thereby interconnecting the catch 28 and the catch 29. Of course, other forms of fixed structures connecting the movable segment 22 and the fixed segment 21 can be designed.

Fig. 9-15 are schematic views of alternative configurations of a guidewire handle according to embodiments of the present invention. In another alternative embodiment, as shown in fig. 9-15, the handle 2 has a bending structure 26, the movable segment 25 is connected with the fixed segment 24 through the bending structure 26, and the bending structure 26 is a flexible structure. Preferably, the bending structure 26 can be made of a tough polymer material. Preferably, the bending structure 26 may also be selected from flexible materials. The bending structure 26 can be deformed to a certain extent so that the movable section 25 can rotate relative to the fixed section 24. The width of the bending structure 26 can be inwardly contracted relative to the fixed section 24 and the movable section 25 to facilitate bending. The strength of the bending structures 26 should ensure that no breakage occurs within a predetermined number of bends.

Alternatively, the fixed section 24, the bending structure 26 and the movable section 25 are arranged in sequence, that is, when the movable section 25 rotates to the closed position, the fixed section 24, the bending structure 26 and the movable section 25 are arranged in sequence along the extending direction of the guide wire 1. Preferably, the movable segment 25, the fixed segment 24 and the bending structure 26 are integrally formed, which can improve the structural strength of the structural handle 2. Specifically, the handle 2 may be manufactured by injection molding, stamping, 3D printing, or the like, and may be integrally molded with the handle 2. The active segment 25 is open on one side to expose the connection point of the electrode 3, so that the electrode 3 can be connected to an extracorporeal device and deliver an electrical pulse to apply electrical stimulation to the target nerve.

The guide wire 1 can be connected with the fixed section 24 by adopting the modes of connecting by a fastener, welding, carrying out encapsulation, splicing, clamping and connecting after hot melting of high polymer materials and the like. In an alternative embodiment, the fixing section 24 has a first fixing groove 271 extending in the implanting direction of the electrode 3 and a second fixing groove 272 perpendicular to the first fixing groove 271, the first fixing groove 271 communicating with the second fixing groove 272. The widths of the first fixing groove 271 and the second fixing groove 272 may be the same as the diameter of the guide wire 1 or slightly smaller than the diameter of the guide wire 1, and the guide wire 1 is fixed in the first fixing groove 271 and the second fixing groove 272, and specifically, the guide wire 1 may be bent, so that both ends of the bent portion are respectively clamped and fixed in the first fixing groove 271 and the second fixing groove 272. After the guide wire 1 is placed, the guide wire 1 and the fixing section 24 can be fixed better by means of hot melting and the like.

As shown in fig. 7-8 and 14-15, when testing the electrodes 3, the movable section 22/25 is rotated to expose the electrodes 3, and then the electrodes 3 can be placed in the test slots of the tester 4 for testing, the movable section 22/25 does not shield the electrodes 3, and the lid of the tester 4 can be normally closed for testing.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A guidewire handle for implantation of an auxiliary electrode (3), comprising:

a guide wire (1) for connection with the electrode (3); and

the handle (2) comprises a fixed section (21, 24) and a movable section (22, 25), the fixed section (21, 24) is fixedly connected with the guide wire (1) and far away from the electrode (3), the movable section (22, 25) is rotatably connected with the fixed section (21, 24), and the movable section (22, 25) is provided with an accommodating cavity (221, 251) for accommodating the electrode (3).

2. The guide wire handle according to claim 1, wherein the movable section (22, 25) is configured to allow the electrode (3) to be at least partially housed within the housing cavity (221, 251) when rotated to the closed position, and to fully expose the electrode (3) when rotated to the open position.

3. The guide wire shaft according to claim 2, characterized in that the handle (2) further comprises a rotation shaft (23), the rotation shaft (23) is perpendicular to the guide wire (1), and the fixed section (21) and the movable section (22) are connected through the rotation shaft (23).

4. The guidewire shaft of claim 3, wherein the movable section (22) has a first open end (223) and the fixed section (21) has a second open end (211), the first open end (223) being opposite the second open end (211) when the movable section (22) is rotated to the closed position.

5. The guidewire handle according to claim 4, wherein one of the first open end (223) and the second open end (211) has a catch (28) and the other has a catch (29) corresponding to the catch (28), the catch (28) and the catch (29) being interconnected when the movable section (22) is rotated to the closed position.

6. The guide wire shaft according to claim 2, characterized in that the handle (2) has a kink (26), the movable section (25) being connected to the fixed section (24) via the kink (26).

7. The guide wire shaft according to claim 6, characterized in that the movable section (25), the fixed section (24) and the bending structure (26) are integrally formed.

8. The guide wire shaft according to claim 1, characterized in that the fixing section (21, 24) has a first fixing groove (271) extending in an implanting direction of the electrode (3) and a second fixing groove (272) perpendicular to the first fixing groove (271), the first fixing groove (271) communicating with the second fixing groove (272), the guide wire (1) being fixed in the first fixing groove (271) and the second fixing groove (272).

9. The guide wire handle according to claim 1, characterized in that the inner wall of the accommodation cavity (221, 251) has a protrusion (222, 252), the protrusion (222, 252) being configured to fix the electrode (3).

10. An implantable medical system comprising at least one guidewire handle according to any one of claims 1-9.