阅读说明：本技术 连接医疗器械的医用连接器和脉冲发生器 (Medical connector and pulse generator for connecting medical instruments ) 是由 宁益华 何筱峰 张磊 于 2018-07-20 设计创作，主要内容包括：本发明公开了一种连接医疗器械的医用连接器,包括连接器本体,所述连接器本体上设有供延伸导线穿入的穿线通孔,所述连接器本体上设有弹性接触部和形变通道,所述形变通道与穿线通孔连通,所述弹性接触部具有凸出抵接部；所述延伸导线穿入穿线通孔前,所述弹性接触部处于自然状态或者被压缩,所述凸出抵接部沿形变通道伸入穿线通孔内；所述延伸导线穿入穿线通孔后,所述延伸导线挤压弹性接触部,所述凸出抵接部抵接延伸导线的导电环,所述凸出抵接部自穿线通孔向形变通道方向回缩。本发明的医用连接器,能够稳定可靠的固定延伸导线,实现延伸导线与脉冲发生器之间的良好导通性能,使用后能够降低对延伸导线的直线度要求。(The invention discloses an medical connector for connecting medical instruments, which comprises a connector body, wherein a threading through hole for an extension lead to penetrate through is formed in the connector body, an elastic contact part and a deformation channel are formed in the connector body, the deformation channel is communicated with the threading through hole, the elastic contact part is provided with a protruding abutting part, before the extension lead penetrates through the threading through hole, the elastic contact part is in a natural state or is compressed, the protruding abutting part extends into the threading through hole along the deformation channel, after the extension lead penetrates through the threading through hole, the extension lead extrudes the elastic contact part, the protruding abutting part abuts against a conducting ring of the extension lead, and the protruding abutting part retracts from the threading through hole to the deformation channel.)

1, A medical connector for connecting medical instruments, comprising a connector body, wherein the connector body is provided with a threading through hole for an extension lead to penetrate through, and is characterized in that the connector body is provided with an elastic contact part and a deformation channel, the deformation channel is communicated with the threading through hole, and the elastic contact part is provided with a protruding abutting part;

before the extension lead penetrates into the threading through hole, the elastic contact part is in a natural state or is compressed, and the protruding abutting part extends into the threading through hole along the deformation channel;

after the extension lead penetrates into the threading through hole, the extension lead extrudes the elastic contact part, the protruding abutting part abuts against the conducting ring of the extension lead, and the protruding abutting part retracts from the threading through hole to the direction of the deformation channel.

2. The medical connector for connecting a medical instrument according to claim 1, wherein at least two elastic contact portions are provided around the threading through hole on the connector body.

3. The medical connector for connecting a medical instrument according to claim 1, wherein: the deformation channel is internally provided with a one-way limiting part which limits the movement of the protruding abutting part from the deformation channel to the threading through hole, so that part of the protruding abutting part extends into the threading through hole.

4. The medical connector of claim 3, wherein: the caliber of the channel at the communication position of the deformation channel and the threading through hole is smaller than the maximum outer diameter of the protruding abutting part.

5. The medical connector for connecting a medical instrument as set forth in claim 1, wherein said elastic contact portion is fixed to said connector body at an end and freely extends at an end , said projecting abutting portion is fixed to an end of said elastic contact portion where said elastic contact portion freely extends, and said projecting abutting portion has a spheroid structure.

6. The medical connector for connecting a medical instrument according to claim 1, wherein: the two ends of the elastic contact part are fixed on the connector body, and the protruding abutting part is arranged on the body of the elastic contact part.

7. The medical connector of claim 5, wherein: the protruding abutting part is provided with an end part for abutting against the conducting ring, and the end part is provided with a profiling structure matched with the conducting ring outline structure.

8. The medical connector of claim 5, wherein: the connector body is provided with a cavity in the outer side of the threading through hole, a connecting arm is arranged in the cavity, the connecting arm divides the cavity into a plurality of accommodating cavities, and the elastic contact portion is arranged in the accommodating cavities.

9. The medical connector for connecting a medical instrument according to claim 8, wherein: the containing cavity is internally provided with a guide sleeve, the guide sleeve is provided with a central through hole which penetrates through along the axial direction, the extending direction of the central through hole is the same as the radial direction of the threading through hole, and the elastic contact part is arranged in the central through hole in a penetrating mode.

10, A pulse generator for use in an implantable electrical nerve stimulation system, comprising a medical connector as claimed in any one of claims 1 to 9 to for connection to a medical device.

Technical Field

The invention relates to medical connectors for connecting medical instruments, and also relates to pulse generators for an implanted nerve electrical stimulation system.

Background

The nerve electrical stimulation system has important functions in the treatment of nerve dysfunction and the rehabilitation of nerve injury. The implanted electrical nerve stimulation system releases high-frequency electrical stimulation by implanting electrodes at specific nerves such as motor nerves and sensory nerves in the human body to stimulate the specific nerves, thereby restoring the function of the human body to a normal operating state. Currently, implantable electrical nerve stimulation systems mainly include implantable Deep Brain Stimulation (DBS), implantable cortical brain stimulation (CNS), implantable spinal cord electrical stimulation (SCS), implantable sacral nerve electrical stimulation (SNS), implantable vagal nerve electrical stimulation (VNS), and the like.

Known implantable electrical nerve stimulation systems include a pulse generator, electrodes, and extension leads implanted within the body, and a controller located outside the body. The connecting head of the pulse generator is provided with a connecting block, the pulse generator is connected with an extension lead through the connecting block, and the extension lead is connected to the electrode, so that the pulse generated by the pulse generator is transmitted to the electrode to electrically stimulate nerves.

For the connection between the connection block and the extension lead (or the extension lead), the known implantable electrical nerve stimulation system usually adopts a screw fixing mode, a through hole for the extension lead to penetrate through and a threaded hole communicated with the through hole are formed in the connection block, a screw is screwed into the threaded hole, and the end plane of the screw presses the conductive ring of the extension lead, so that the contact conduction is realized. This way of fixing the extension leads has several drawbacks: (1) the tightness degree of the screw can cause the change of contact impedance, thereby influencing the conduction performance of the pulse generator and the extension lead and influencing the normal use of products; (2) the screw risks loosening under the influence of long-time vibration factors, so that disconnection is caused, and the product is invalid; (3) the screw is in single-point contact with the extension lead, and the conduction performance of the extension lead is influenced under the condition that the straightness of the conducting ring of the extension lead is poor; (4) over-tightening of the screw lock can cause the extension wire to deform under pressure, causing product damage.

Disclosure of Invention

The technical problem to be solved by the invention is to provide medical connectors for connecting medical instruments, which can stably and reliably connect extension leads, realize good conduction performance between the extension leads and a pulse generator, and reduce the requirement on the straightness of the extension leads after use.

In order to solve the technical problems, the invention provides medical connectors for connecting medical instruments, which comprise a connector body, wherein the connector body is provided with a threading through hole for an extension lead to penetrate through, the connector body is provided with an elastic contact part and a deformation channel, the deformation channel is communicated with the threading through hole, and the elastic contact part is provided with a convex abutting part;

before the extension lead penetrates into the threading through hole, the elastic contact part is in a natural state or is compressed, and the protruding abutting part extends into the threading through hole along the deformation channel;

after the extension lead penetrates into the threading through hole, the extension lead extrudes the elastic contact part, the protruding abutting part abuts against the conducting ring of the extension lead, and the protruding abutting part retracts from the threading through hole to the direction of the deformation channel.

In preferred embodiments of the invention, step includes providing at least two resilient contacts on the connector body around the periphery of the feedthrough .

In preferred embodiments of the present invention, the step includes disposing a one-way stopper in the deformation channel, wherein the one-way stopper limits the movement of the protruding abutting portion from the deformation channel to the threading through hole, so that part of the protruding abutting portion protrudes into the threading through hole.

In preferred embodiments of the present invention, the step includes that the caliber of the channel where the deformation channel communicates with the threading through hole is smaller than the maximum outer diameter of the protruding abutting part.

In preferred embodiments of the invention, the step further includes that the end of the elastic contact portion is fixed on the connector body, the other end is freely extended, the protruding abutting portion is fixed on the end of the elastic contact portion, which is freely extended, and the protruding abutting portion is in a spheroid structure.

In preferred embodiments of the present invention, the step further includes that both ends of the elastic contact portion are fixed on the connector body, and the body of the elastic contact portion has the protruding abutting portion.

In preferred embodiments of the invention, step includes the projecting abutment having an end for abutting the conductive ring, the end having a contoured configuration that matches the configuration of the conductive ring profile.

In preferred embodiments of the present invention, the step includes that a cavity is formed in the connector body outside the threading through hole, a connecting arm is arranged in the cavity, the connecting arm divides the cavity into a plurality of accommodating cavities, and the elastic contact part is arranged in the accommodating cavities.

In preferred embodiments of the present invention, the step includes disposing a guide sleeve in the accommodating cavity, wherein the guide sleeve has a central through hole passing through along the axial direction, the central through hole extends in the same radial direction as the threading through hole, and the elastic contact portion is disposed through the central through hole.

In order to solve the technical problem, the invention also provides pulse generators for an implanted nerve electrical stimulation system, which comprise the medical connector connected with the medical appliance and with the structure.

The medical connector for connecting medical instruments can stably and reliably connect the extension lead, realize good conduction performance between the extension lead and the pulse generator, and reduce the requirement on the straightness of the extension lead after use.

Drawings

FIG. 1 is a schematic view of an extended conductor;

FIG. 2 is a perspective view of a medical connector in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic top view of the medical connector of FIG. 2;

FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;

FIG. 5 is an enlarged partial view of portion B of FIG. 4;

FIG. 6 is a schematic structural view of an elastic contact portion in a second embodiment of the present invention;

figure 7 is a schematic diagram of the structure for connecting an extension wire to a pulse generator using a medical connector in a preferred embodiment of the invention.

Wherein: 1-connecting block, 3-screw;

2-connector body, 4-extension lead, 6-threading through hole, 8-elastic contact part, 10-protruding abutting part, 12-conductive ring, 14-deformation channel, 16-accommodating cavity, 18-orifice, 20-impulse generator body, 22-connector and 24-connecting arm.

Detailed Description

The present invention is further illustrated in conjunction with the accompanying drawings and the specific embodiments so that those skilled in the art can better understand the present invention and can practice it, but the embodiments are not to be construed as limiting the present invention.