阅读说明：本技术 一种可自动更换弹匣的粒子植入器及应用其的植入方法 (Particle implanter capable of automatically replacing magazine and implanting method using particle implanter ) 是由 张永德 王开瑞 姜金刚 于 2020-06-18 设计创作，主要内容包括：本发明涉及一种可自动更换弹匣的粒子植入器及应用其的植入方法,属于医用器械领域。由固定基座、弹匣转盘、粒子弹匣、套管针、粒子推针、驱动电机、左旋麦轮和右旋麦轮组成；固定基座上加工有转盘导柱、弹匣安装槽口、推针通道和套管针连接座；弹匣转盘上加工有转盘套管和弹匣固定夹爪；并提供了一种应用上述粒子植入器的植入方法。本发明在基于标准安全弹匣的前提下,增加植入器的最大粒子承载量,并且可在术中穿刺状态下,自动切换粒子弹匣,避免了术中医护人员频繁沟通更换弹匣的问题导致的植入操作中断问题。并且通过一组麦克纳姆轮与转盘导向柱配合,实现了粒子转盘的回转与升降运动,结构简单驱动灵活,有效提高了粒子植入的平稳性。(The invention relates to a particle implanter capable of automatically replacing a magazine and an implanting method using the same, and belongs to the field of medical instruments. The particle bullet comprises a fixed base, a bullet box turntable, a particle bullet box, a trocar, a particle push needle, a driving motor, a left rotary wheel and a right rotary wheel; a turntable guide post, a magazine mounting notch, a push pin channel and a trocar connecting seat are processed on the fixed base; a rotating disc sleeve and a magazine fixing clamping jaw are processed on the magazine rotating disc; and provides an implantation method using the particle implanter. On the premise of being based on the standard safety magazine, the maximum particle bearing capacity of the implanter is increased, the particle magazine can be automatically switched in the puncture state in the operation, and the problem of implantation operation interruption caused by the problem that medical care personnel frequently communicate and replace the magazine in the operation is solved. And through a set of Mecanum wheel and the cooperation of carousel guide post, realized the gyration and the elevating movement of particle carousel, simple structure drives in a flexible way, has effectively improved the stationarity that the particle was implanted.)

1.ㅤ A particle implanter for automatically changing a magazine, comprising: the particle bullet device comprises a fixed base (10), a bullet box turntable (20), a particle bullet box (30), a trocar (41), a particle push needle (42), a driving motor (50), a left wheat-spinning wheel (61) and a right wheat-spinning wheel (62);

the automatic magazine loading device comprises a fixed base (10), a rotary table guide post (101), a magazine mounting notch (102), a push needle channel (107) and a trocar connecting seat (103), wherein the rotary table guide post (101) is positioned at the top of the fixed base (10) and is parallel to the axis of the magazine mounting notch (102), the push needle channel (107) is positioned in the fixed base (10) and vertically penetrates through the magazine mounting notch (102), and the trocar connecting seat (103) is positioned at the front end of the fixed base (10) and is coaxial with the push needle channel (107);

ㅤ ㅤ a turntable sleeve (200) and a magazine fixing clamping jaw (201) are processed on the magazine turntable (20), the central axes of the turntable sleeve (200) and the magazine turntable (20) are collinear and are of a hollow sleeve structure, and the magazine fixing clamping jaws (201) are uniformly distributed on the outer circumferential surface of the magazine turntable (20);

ㅤ ㅤ the overall connection relationship is: the particle magazine comprises a fixed base (10), a driving motor (50), a magazine turntable (20), a turntable guide post (101), a left rotary wheel (61), a right rotary wheel (62), a particle magazine (30), a magazine fixing clamping jaw (201), a trocar (41), a trocar connecting seat (103) and a trocar (41) which are arranged at the front end of the fixed base (10), wherein the trocar (41) is overlapped with the axis of a push needle channel (107), and the particle push needle (42) is connected with the push needle channel (107) in a sliding mode along the axis direction.

2.ㅤ the particle implanter for automatically changing the magazine as claimed in claim 1, wherein the magazine carousel (20) has 5 magazine holding jaws (201) uniformly distributed on the outer circumferential surface thereof, and the holding axis of the magazine holding jaws (201) is parallel to the central axis of the magazine carousel (20).

3.ㅤ the particle implanter of claim 1, wherein said turret casing (200) is coated with a rubber coating on its outer surface.

4.ㅤ the particle implanter of claim 1, wherein said turret guide post (101) is PTFE.

5.ㅤ A method for implanting a particle implanter with an automatically replaceable magazine as claimed in any of claims 1 to 4, comprising the steps of:

ㅤ a, firstly, the particle magazine (30) filled with radioactive particles is arranged in a magazine fixing clamping jaw (201) at the periphery of the magazine rotating disc (20) to ensure that the reverse extension line of the implantation direction of each particle magazine (30) intersects with one point on the axis of the magazine rotating disc (20);

ㅤ b, drawing out the particle push pin (42), and inserting any particle magazine (30) and the rotary table sleeve (200) on the magazine rotary table (20) downwards in alignment with the magazine mounting notch (102) and the rotary table guide post (101) on the fixed base (10) respectively to complete the arrangement of the particle magazine (30) before the operation;

ㅤ c, the particle push needle (42) is inserted and pushed along the puncture needle-inserting direction until the needle point of the particle push needle (42) is superposed with the needle point of the trocar (41), so as to ensure the smoothness of the particle implantation channel;

ㅤ d, puncturing the needle point of the trocar (41) to the target implantation point in the patient;

ㅤ e, the particle push pin (42) is drawn out of the push pin channel (107) and is inserted and pushed to the most front end again, so as to ensure that the radioactive particles are pushed out of the trocar (41) and are left at the target point in the body of the patient;

ㅤ f, repeating the steps d and e until the implantation of all the particles in the current particle magazine (30) is completed;

ㅤ g, the left rotary wheel (61) and the right rotary wheel (62) respectively rotate in the anticlockwise direction and the clockwise direction to drive the magazine turntable (20) to move upwards and horizontally until the particle magazine (30) is separated from the magazine mounting notch (102);

ㅤ h, the left rotary wheel (61) and the right rotary wheel (62) rotate in the same direction to drive the magazine turntable (20) to rotate until the axis of the next particle magazine (30) is collinear with the axis of the magazine mounting notch (102);

ㅤ i, the left rotary wheel (61) and the right rotary wheel (62) respectively rotate clockwise and anticlockwise to drive the magazine turntable (20) to move downwards until the particle magazine (30) is completely inserted into the magazine mounting notch (102), thus completing the automatic replacement of the particle magazine (30);

ㅤ j, repeating steps f to i until all the radioactive seeds are implanted.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a particle implanter capable of automatically replacing a magazine and an implanting method using the particle implanter.

Background

In the radioactive particle implantation operation, radioactive particles such as iodine 125 are implanted into a tumor region of a patient through a puncture channel, and cancer cells are eliminated by utilizing sensitivity of a lesion tissue to radiation, thereby performing radiotherapy. As a therapeutic means of radiation therapy internal irradiation, the radiation therapy has been widely developed for treating a plurality of cancers such as prostate cancer, lung cancer, liver cancer and the like at present, and has good treatment effect and prognosis quality.

In clinical practice, more than dozens of radioactive seeds are generally implanted in a single seed implantation operation, but the standard magazine capacity of the current seed implanter is 10, so that an operator and an instrument nurse in the operation need to communicate frequently to deliver the seed magazine for replacement, the seed magazine is replaced in 30% of the time in the operation, and meanwhile, the implantation deviation which is difficult to avoid is caused by the loss of tracking the target position in the operation due to the frequently interrupted operation process. And the radioactive particle implantation magazine is a radioactive medical appliance, which needs to be restricted by various factors such as regulations, clinical use and radiation safety, and the currently clinically used particle magazine has been well certified in terms of safety, applicability and the like as a standard for international common use.

Therefore, there is a need for a particle implantation apparatus that can automatically replace the radioactive particle magazine during operation based on the existing standard magazine to avoid interruption of the implantation process for a long time.

Patent 201410328195.2 discloses an automated device for continuous radioactive particle implantation that solves the problem of frequent particle magazine replacement by increasing the maximum volume of the particle magazine (up to 100 particles), which is technically feasible. However, the problem that the magazine needs to be manually replaced after being used up still exists, the proposed large-capacity magazine which exceeds the currently clinically applied particle magazine by nearly 10 times is difficult to implement in the aspects of clinical requirements, radiation safety and the like, and the problem that blood flows backwards through a puncture needle exists in clinic, and the long-time particle magazine which is not replaced is easy to cause radioactive particle blocking due to blood coagulation and cannot be implanted, so that implantation interruption in more serious operation is caused.

Disclosure of Invention

The present invention provides a particle implanter capable of automatically replacing a magazine and an implantation method using the same, which aims at the problems existing in the conventional radioactive particle implantation.

In order to solve the technical problems, the invention provides the following technical scheme:

ㅤ ㅤ A pellet implanter with automatic magazine replacement, comprising: the particle gun magazine comprises a fixed base, a magazine turntable, a particle magazine, a trocar, a particle push needle, a driving motor, a left rotary wheel and a right rotary wheel; the fixed base is provided with a turntable guide post, a magazine mounting notch, a push needle channel and a trocar connecting seat, the turntable guide post is positioned at the top of the fixed base and is parallel to the axis of the magazine mounting notch, the push needle channel is positioned in the fixed base and vertically penetrates through the magazine mounting notch, and the trocar connecting seat is arranged at the front end of the fixed base and is coaxial with the push needle channel; a rotating disc sleeve and a magazine fixing clamping jaw are processed on the magazine rotating disc, the central axes of the rotating disc sleeve and the magazine rotating disc are collinear and are of a hollow sleeve structure, and the magazine fixing clamping jaws are uniformly distributed on the outer circumferential surface of the magazine rotating disc; the driving motor is fixedly connected in a motor fixing seat at the top of the fixing base, output shaft ends of the two motors are respectively fixedly connected with the left rotary wheel and the right rotary wheel, the magazine turntable is connected with a turntable guide pillar in a matched mode through a turntable sleeve, the left rotary wheel and the right rotary wheel are connected with the outer surface of the turntable sleeve, the particle magazine is installed in a magazine fixing clamping jaw on the outer surface of the magazine turntable and is detachably connected, the trocar is fixedly connected with a trocar connecting seat at the front end of the fixing base, the trocar coincides with the axis of the push needle channel, and the particle push needle is connected with the push needle channel in a sliding mode along the axis direction.

In some embodiments, 5 magazine fixing clamping jaws are uniformly distributed on the outer circumferential surface of the magazine rotating disc, the clamping axis of each magazine fixing clamping jaw is parallel to the axis of the magazine rotating disc, odd number of the magazine fixing clamping jaws are uniformly distributed, so that the particle magazine at the rear part avoids the axis position of the particle push needle to avoid interference when the particle magazine at the front end is used for implantation, and the loading capacity of 5 standard particle magazines can meet the requirement of a common single particle implantation operation on the number of particles.

In some embodiments, the outer surface of the turntable sleeve is coated with a rubber coating for increasing friction with the wheat wheel.

In some embodiments, the material of the turntable guide post is polytetrafluoroethylene, so that the friction force between the particle turntable and the turntable guide post is reduced, and the stability of particle magazine replacement is improved.

An implanting method of a particle implanter using an automatically replaceable magazine according to any of claims 1 to 4, comprising the following steps.

a. Firstly, the particle magazine filled with radioactive particles is arranged in a magazine fixing clamping jaw at the periphery of a magazine rotating disc, and a point on the axis of the magazine rotating disc is crossed by a reverse extension line of the implantation direction of each particle magazine.

b. And drawing out the particle push pin, and respectively aligning any particle magazine and a rotary table sleeve on the magazine rotary table with a magazine mounting notch on the fixed base and the axis of a rotary table guide post and inserting downwards to finish the arrangement of the particle magazine before operation.

c. The particle push needle is inserted and pushed along the puncture needle-inserting direction until the needle point of the particle push needle is superposed with the needle point of the trocar, so that the smoothness of the particle implantation channel is ensured.

d. And puncturing the needle tip of the trocar to the target implantation point in the patient.

e. The particle push needle is drawn out of the push needle channel and reinserted and pushed to the most front end, so that the radioactive particles are ensured to be pushed out of the trocar and are left at the target point in the body of the patient.

f. And e, repeating the step d and the step e until all the particles in the current particle magazine are implanted.

g. The left rotary wheel and the right rotary wheel respectively rotate in the anticlockwise direction and the clockwise direction, and the magazine turntable is driven to translate upwards by friction force until the particle magazine is separated from the magazine mounting notch.

h. The left rotary wheel and the right rotary wheel rotate in the same direction, and the magazine turntable is driven to rotate to the axis of the next particle magazine and the axis of the magazine mounting notch to be collinear by friction force.

i. The left rotary wheel and the right rotary wheel respectively rotate clockwise and anticlockwise, and the magazine turntable is driven to translate downwards through friction force until the particle magazine is completely inserted into the magazine mounting groove, so that the automatic replacement of the particle magazine is completed.

j. And (e) repeatedly executing the steps f to i until all radioactive particle implantation is completed.

The present invention has the following advantageous effects.

1. Through carousel formula particle magazine change mechanism, can settle 5 radioactive particle magazines simultaneously, realized under the prerequisite based on standard safety magazine, increase the maximum particle bearing capacity of particle implantation ware to can be under the puncture state in the art, realize automatic switch-over radioactive particle magazine through the rotation of particle carousel and the coupled motion of lift, avoided in the art because of medical personnel frequently communicate through the implantation interrupt problem that manual change magazine leads to and reduce medical personnel's radiation risk.

2. The rotation and lifting movement of the particle turntable are realized through the matching of a group of Mecanum wheels and the turntable guide column, the structure is simple, the driving is flexible, the weight of the particle implanter is reduced, and the stability of particle implantation is effectively improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the particle-free turntable according to the present invention.

Fig. 3 is a schematic perspective view of a fixing base according to the present invention.

Fig. 4 is a cross-sectional view of the mounting base of the present invention.

Fig. 5 is a schematic perspective view of a particle turntable according to the present invention.

Fig. 6 is a schematic perspective view of the left-handed wheel of the present invention.

Fig. 7 is a schematic perspective view of a right-handed wheel according to the present invention.

The drawings illustrate a fixed base 10, a turret guide post 101, a magazine mounting slot 102, a trocar connecting base 103, a push pin stopper 104, a motor fixing base 105, a handle 106, a push pin channel 107, a magazine turret 20, a turret sleeve 200, a magazine fixing jaw 201, a pellet magazine 30, a trocar 41, a pellet push pin 42, a driving motor 50, a left spinning wheel 61, a left spinning wheel hub 610, a left spinning wheel roller 611, a right spinning wheel 62, a right spinning wheel hub 620, and a right spinning wheel roller 621.

Detailed Description

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.