阅读说明：本技术 一种能够快速切换植入针的粒子植入器 (Particle implantation device capable of rapidly switching implantation needles ) 是由 张永德 魏然 左思浩 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种能够快速切换植入针的粒子植入器,它涉及医疗器械技术领域,它包含内针、外针、挡块A、连接杆、粒子库接收装置、挡块B、导向杆A、导向杆B、滑块、连接套、推块、手柄、紧定螺钉、定位螺钉、枪把、弹簧、定位轴、换接按钮、导向套、植入针针孔、锥面,换接状态下,按压换接按钮,可以使得换接按钮前端位置对植入针沿其轴线方向上的摩擦力逐渐减小至零,从而快速更换植入针。导向套上设置有植入针针口以及锥面,在进行植入针进给时,通过锥面可以很方便的将植入针移动到植入针针孔位置,从而防止在进给植入针时出现的“撞针”现象,以保证进给植入针的顺畅。(The invention discloses a particle implanter capable of rapidly switching implantation needles, which relates to the technical field of medical instruments and comprises an inner needle, an outer needle, a stop block A, a connecting rod, a particle library receiving device, a stop block B, a guide rod A, a guide rod B, a sliding block, a connecting sleeve, a push block, a handle, a set screw, a positioning screw, a gun handle, a spring, a positioning shaft, a switching button, a guide sleeve, an implantation needle hole and a conical surface. The guide sleeve is provided with an implantation needle opening and a conical surface, when the implantation needle is fed, the implantation needle can be conveniently moved to the position of the implantation needle hole through the conical surface, so that the phenomenon of 'firing pin' when the implantation needle is fed is prevented, and the smooth feeding of the implantation needle is ensured.)

1. The utility model provides a particle implantation device that can fast switch over implantation needle, it contains interior needle (1), outer needle (2), dog A (3), connecting rod (4), particle storehouse receiving arrangement (5), dog B (6), guide bar A (7), guide bar B (8), slider (9), adapter sleeve (10), ejector pad (11), handle (12), holding screw (13), set screw (14), gun handle (15), spring (16), location axle (17), change and connect button (18), uide bushing (19), implantation needle pinhole (19-1), conical surface (19-2), its characterized in that: the inner needle (1) and the outer needle (2) are coaxially arranged, the outer needle (2) is arranged inside the connecting rod (4) and is fixed through a jackscrew, the block A (3) is vertically arranged with the axis of the outer needle (2), the particle library receiving device (5) is vertically arranged with the axis of the connecting rod (4), the block B (6) is connected with the particle library receiving device (5) through the guide rod A (7) and the guide rod B (8), one end of the guide rod A (7) is arranged in a corresponding hole groove in the block A (3) and is fixed through the jackscrew, the other end of the guide rod A (7) is arranged in a corresponding hole groove of the sliding block (9) and is fixed through the jackscrew, the connecting sleeve (10) is coaxially arranged with the guide rod B (8), one end of the connecting sleeve (10) is arranged in the sliding block (9) and is fixed through the jackscrew, the other end of the connecting sleeve (10) is arranged in the pushing block (11, the gun handle (15) and the sliding block (9) are positioned through a positioning screw (14) and locked through a fastening screw (13), the switching button (18) and the connecting rod (4) are connected through a positioning shaft (17), and the spring (16) and the connecting rod (4) are connected through welding.

2. A particle implanter as defined in claim 1, wherein the particle implanter is capable of rapidly switching implantation needles: the guide sleeve (19) is provided with an implantation needle hole (19-1) and a conical surface (19-2).

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a particle implanter capable of rapidly switching implantation needles.

Background

Currently, the clinical radioactive particle implantation operation can effectively treat prostate cancer. It is a therapeutic means for implanting radioactive seeds into a target region of a lesion by a doctor using a seed implanter and by means of an imaging device.

However, some problems still exist in the process of using the particle implanter at present, one of the problems to be solved is to rapidly switch the implantation needle, and since one particle implantation operation is usually performed by implanting a plurality of radioactive particles, and the target region is usually not in the same position, the implantation needle needs to be replaced many times. In addition, due to the influence of manufacturing and machining precision, the feeding of the implantation needle is often limited, and a phenomenon of "firing pin" occurs.

Disclosure of Invention

In view of the above problems, the present invention provides a particle implanter capable of rapidly switching an implantation needle.

The invention relates to a particle implanter capable of rapidly switching implantation needles, which comprises an inner needle, an outer needle, a stop block A, a connecting rod, a particle storage receiving device, a stop block B, a guide rod A, a guide rod B, a slide block, a connecting sleeve, a push block, a handle, a set screw, a positioning screw, a gun handle, a spring, a positioning shaft, a switching button, a guide sleeve, an implantation needle hole and a conical surface, and is characterized in that: the inner needle and the outer needle are coaxially arranged, the outer needle is arranged in the connecting rod and is fixed through a jackscrew, the block A is vertically arranged with the axis of the outer needle, the particle library receiving device is vertically arranged with the axis of the connecting rod, the block B is connected with the particle library receiving device through a guide rod A and a guide rod B, one end of the guide rod A is arranged in a corresponding hole groove in the block A, and is fixed by a jackscrew, the other end of the jackscrew is arranged in a corresponding hole groove of the slide block and is fixed by the jackscrew, the connecting sleeve is coaxially arranged with the guide rod B, one end of the connecting sleeve is arranged in the slide block, and is fixed by a jackscrew, the other end of the jackscrew is arranged on the push block and is fixed by the jackscrew, the gun handle and the slide block are positioned by a positioning screw, and the spring is connected with the connecting rod through a welding connection.

Preferably, the guide sleeve is provided with an implantation needle hole and a conical surface.

The invention has the beneficial effects that:

(1) the switching structure designed by the invention is not popularized in the field of medical instruments, the switching part comprises a spring, a positioning shaft, a connecting rod and a switching button, the switching button is connected with the connecting rod through the positioning shaft, the spring is connected with the connecting rod through welding, for convenience of explanation, one side close to the stop block A is defined as a front end position, and the position close to the gun handle is defined as a rear end position. Under the natural state, the change-over button receives the elastic force effect of spring to through the restriction of location axle inside the connecting rod, under the change-over state, press the change-over button, can make change-over button front position reduce to zero along the ascending frictional force of its axis direction to the implantation needle gradually, thereby the needle is implanted in the quick replacement.

(2) The guide sleeve is provided with an implantation needle opening and a conical surface, when the implantation needle is fed, the implantation needle can be conveniently moved to the position of the implantation needle hole through the conical surface, so that the phenomenon of 'firing pin' when the implantation needle is fed is prevented, and the smooth feeding of the implantation needle is ensured.

(3) The whole device is simple in structure, is locked by threaded connection and is convenient to mount and dismount.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

Figure 1 is a schematic diagram of the overall configuration of a particle implanter,

FIG. 2 is a schematic view of a switching portion of a particle implanter

FIG. 3 is a schematic structural view of the guide sleeve

In the figure: 1, an inner needle; 2, external needle; 3, a stop block A; 4 connecting rods; 5 a particle library receiving device; 6, a stop B; 7, a guide rod A; 8, a guide rod B; 9, a sliding block; 10 connecting sleeves; 11, a push block; 12 a handle; 13 fastening the screw; 14 a set screw; 15 gun handle; 16 springs; 17 positioning the shaft; 18 a change-over button; 19 a guide sleeve; 19-1 implanting needle holes; 19-2 taper.

The specific implementation mode is as follows:

in order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.