CN-121971292-A - Improved automatic split charging instrument for radioactive liquid medicine

CN121971292ACN 121971292 ACN121971292 ACN 121971292ACN-121971292-A

Abstract

The invention discloses an improved automatic radioactive liquid medicine split charging instrument, and belongs to the field of medical instruments. The split charging instrument comprises a split charging injector, a protective backboard and a driving mechanism, wherein the driving mechanism comprises a driving motor, a motor shaft, a driving screw and a sliding block arranged on the driving screw, and a plunger pushing claw connected with the sliding block, the driving motor is fixed on the outer side of the protective backboard, the driving screw is rotatably fixed on the inner side of the protective backboard, a first through hole for the motor shaft to penetrate through is formed in the protective backboard, the outer end of the motor shaft is connected with an output shaft of the driving motor, the inner end of the motor shaft is connected with a first bevel gear, and the upper end of the driving screw is connected with a second bevel gear meshed with the first bevel gear. The driving screw rotates under the action of the driving motor, and the sliding block drives the plunger pushing claw to move up and down along with the rotation of the driving screw, so that the injector can be plugged up and down. The radioactive liquid automatic split charging device is simple in structure, ingenious in design and low in cost, can effectively avoid radioactive rays from leaking, and greatly improves the safety of the radioactive liquid automatic split charging device.

Inventors

LIU XIAODONG
YI HEQING
ZHAO CHUNLEI
XU LI
CAI LE
LI ZHUOWEN
ZHAO BO
LI HUALU
QIN JINGRAN

Assignees

秦靖然
温州南核医工科技管理有限公司

Dates

Publication Date: 20260505
Application Date: 20260326

Claims (10)

1. The utility model provides an automatic partial shipment appearance of improved generation radioactivity liquid medicine, includes partial shipment syringe and the actuating mechanism of its syringe plunger plug from top to bottom of drive, its characterized in that still includes the protection backplate, actuating mechanism includes driving motor, motor axle, drive screw and sets up slider above that to and the plunger pushing claw that is connected with the slider, driving motor fixes the outside of protection backplate, the rotatable fixing of drive screw is in the inboard of protection backplate, set up on the protection backplate and supply the first through-hole that the motor axle runs through, the motor axle outer end with driving motor's output shaft, first bevel gear is connected to its inner, driving screw's upper end connect with the second bevel gear of first bevel gear meshing, then driving screw can be in driving motor effect is rotated down, the slider drives plunger pushing claw reciprocates along with driving screw's rotation, realizes the upper and lower plug of syringe plunger in the partial shipment syringe.
2. The improved automatic radioactive liquid medicine dispensing apparatus of claim 1, wherein an upper limit point of upward movement of the plunger pawl is located at a lower portion of the first through hole in a horizontal direction.
3. The improved automatic radioactive liquid medicine dispensing apparatus of claim 2, wherein the first through hole has a diameter of 5-8mm.
4. The improved automatic radioactive liquid medicine dispensing apparatus of claim 3, wherein said protective back plate includes a fixed frame and a lead block protective body disposed therein.
5. The improved automatic packaging device for radioactive liquid medicine according to claim 4, wherein a linear guide rail is further arranged on the inner side of the protective back plate, the linear guide rail is arranged in parallel with the driving screw rod, the linear guide rail is used for guiding the sliding block to linearly move up and down along the driving screw rod shaft, and the outer end of the motor shaft is connected with an output shaft of the driving motor through a coupler.
6. The improved automatic packaging machine for radioactive liquid medicine according to any one of claims 1 to 5, further comprising a three-way valve driving mechanism connected with the three-way valve in the packaging transfer conduit, wherein the three-way valve driving mechanism comprises a three-way valve driving motor, a three-way valve motor shaft, a transmission gear set, a three-way valve driving shaft and a three-way valve support, the three-way valve driving motor is fixed on the outer side of the protective back plate, the transmission gear set is fixed on the inner side of the protective back plate, a second through hole for the three-way valve motor shaft to penetrate is further formed in the lower portion of the protective back plate, the outer end of the three-way valve motor shaft is connected with an output shaft of the three-way valve driving motor, the inner end of the three-way valve motor shaft is connected with a first straight gear, one end of the three-way valve driving shaft is connected with the second straight gear, and the other end of the three-way valve driving shaft is connected with a three-way valve core after passing through the three-way valve support, when the first straight gear rotates under the action of the three-way valve driving motor, the second straight gear is driven to rotate, and further the three-way valve driving motor is driven to rotate, so as to realize the control of the three-way valve core.
7. The improved automatic dispensing machine for radioactive liquid medicine according to claim 6, wherein a three-way valve position sector plate is provided between the three-way valve motor shaft and the output shaft of the three-way valve driving motor, and the three-way valve position sector plate is connected with a three-way valve position detection sensor.
8. The improved automatic radioactive liquid medicine dispensing apparatus of claim 6, wherein the second through hole has a diameter of 5-8mm.
9. The improved automatic dispensing machine for radioactive liquid medicine according to claim 6, further comprising a fixing plate for fixing the dispensing transfer duct, wherein the three-way valve support is provided on the fixing plate, and a guide hole for the plunger pusher jaw to pass through is further provided on the upper portion of the fixing plate.
10. The improved automatic radioactive liquid medicine dispensing apparatus according to claim 9, wherein the dispensing transfer duct includes a plurality of three-way valves, each of the three-way valves is provided with a set of three-way valve driving mechanisms, and a first spur gear of each set of three-way valve driving mechanisms is disposed at a lower portion of the second spur gear.

Description

Improved automatic split charging instrument for radioactive liquid medicine Technical Field The invention relates to the technical field of medical instruments, in particular to an improved automatic radioactive liquid medicine split charging instrument. Background In order to meet the requirements of clinical patients on radiopharmaceuticals, an automatic radioactive liquid medicine split charging instrument is adopted at present to dilute and split the original radioactive liquid medicine. In the split charging process of the radioactive medicine, radioactive liquid in the split charging instrument can escape radioactive rays to the outside of the instrument, so that the radioactive rays leak, and radiation can be generated to operators, so that the operators are injured. Therefore, how to effectively reduce the leakage radiation is one of the key design factors in the development and design of an automatic dispensing apparatus for radioactive liquid medicine. The existing automatic split charging instrument for radioactive liquid medicine is generally characterized in that a split charging transfer catheter and a split charging injector connected with the split charging transfer catheter are arranged in a protection cavity surrounded by a protection lead body, but in order to reduce the use amount of the lead body, the size of the protection cavity can be reduced as much as possible, so that the existing split charging instrument is characterized in that a driving mechanism of the split charging injector and a driving mechanism of a three-way valve of the split charging transfer catheter are arranged outside the protection cavity. As shown in figure 1, the driving mechanism 2 of the split charging injector 1 is arranged outside the protection cavity, so that the protection back plate 3 is required to be provided with the avoiding chute 5 for the plunger pushing arm 4 to move up and down, the radioactive liquid medicine extracted by the split charging injector 1 is emitted from the avoiding chute 5, the back of the split charging instrument is caused to have radioactive rays leakage, and harm is caused to staff. In addition, the three-way valve driving mechanism 7 of the existing split charging transfer catheter 6 is directly arranged on the horizontal outer side of the three-way valve 8, so that radioactive rays of the radioactive liquid medicine passing through the three-way valve 8 can be horizontally emitted from the communication hole 9, and the radioactive rays on the back of the split charging instrument are leaked, so that harm is caused to staff. Aiming at the defects, the prior automatic dispensing instrument for the radioactive liquid medicine has the solution that an auxiliary protective back plate 10 is additionally arranged on the outer side of the protective back plate 3 so as to make up the problem that radioactive rays are emitted from the prior avoiding sliding groove 5 or the communication hole 9. This solution not only increases the amount of lead used, increases the cost, but also increases the weight of the device itself, resulting in inconvenience in operation and use. The invention is based on the improvement of the structure of the existing automatic radioactive liquid medicine split charging instrument, so that the improved automatic split charging instrument effectively solves the problem of radioactive rays leakage on the basis of not adding an auxiliary protection body, and greatly improves the safety of the automatic radioactive liquid medicine split charging instrument. Disclosure of Invention The invention aims to solve the technical problem of providing an improved automatic radioactive liquid medicine split charging instrument, so that the improved automatic split charging instrument effectively solves the problem of radioactive rays leakage on the basis of not adding an auxiliary protection body, and greatly improves the safety of the automatic radioactive liquid medicine split charging instrument, thereby overcoming the defects of the existing automatic radioactive liquid medicine split charging instrument. In order to solve the technical problems, the invention provides an improved automatic split charging instrument for radioactive liquid medicine, which comprises a split charging injector, a driving mechanism for driving a plunger of the injector to be inserted and pulled up and down, and a protective back plate, wherein the driving mechanism comprises a driving motor, a motor shaft, a driving screw, a sliding block arranged on the driving screw, and a plunger pushing claw connected with the sliding block, the driving motor is fixed on the outer side of the protective back plate, the driving screw is rotatably fixed on the inner side of the protective back plate, a first through hole for the motor shaft to penetrate through is formed in the protective back plate, the outer end of the motor shaft is connected with an output shaft of the driving motor, the inner end o