Radioactive particle puncture calibration device

Abstract

The utility model relates to a radioactive particle puncture calibration device which comprises an angle plate, the angle plate is in the shape of a quarter circle, angle scales are arranged on the arc-shaped edge of the angle plate, a swing rod and a measuring scale are connected to the circle center of the angle plate through a connecting rotating shaft, length scales are arranged on the surface of the measuring scale, and a penetrating pipe is arranged on the swing rod. The swing rod and the measuring scale are located on the same side of the angle plate. The connecting rotating shaft comprises a shaft rod arranged on the plane of the angle plate, and the shaft rod is in threaded connection with a fastening nut. And lantern rings are arranged at the end parts of the measuring scale and the swing rod and are sleeved on the shaft rod. A notch is formed in one side of the penetrating pipe and used for enabling the puncture needle to be separated from the penetrating pipe. The puncture needle is small in size, facilitates puncture operation of a plurality of puncture needles in one operation, can accurately control puncture angle and depth, and is easy to accept by general patients due to the fact that the puncture needle is simple in structure, reusable and low in cost.

Description

Technical Field

[0001] The utility model relates to a radioactive particle implantation device, in particular to a radioactive particle puncture calibration device. Background Art

[0002] Radioactive particle implantation refers to an internal radiotherapy technique in which radioactive particles such as iodine-125 particles are implanted into the tumor through multiple puncture needles. The radioactive particles kill the tumor by releasing gamma rays.

[0003] The accuracy of particle implantation depends on the accuracy of the position of the particle implantation puncture needle. During the particle implantation process, due to differences in tumor texture and operator experience, it is easy to cause insufficient control of the puncture needle angle, which may lead to cold areas or damage to surrounding organs. Therefore, the accuracy of puncture is directly related to the efficacy. The success of the puncture operation is determined by three factors: puncture point, puncture angle and puncture depth.

[0004] The puncture point can be accurately obtained by setting markers, but the puncture angle is often difficult to grasp. Although there are 3D printed puncture needle positioning templates, the positioning templates can fit the patient's skin and control the angle of the puncture needle through the pinholes on the positioning templates, but the 3D printed templates need to be customized and the cost is too high for ordinary patients to afford.

[0005] Therefore, the most commonly used method at present is to manually estimate the angle for puncture. The success rate of this method of puncture is closely related to the doctor's experience and the location of the lesion. It also increases the number of CT scans and the patient's radiation exposure.

[0006] Meanwhile, in the current puncture operation, the puncture depth is obtained by counting the scale formed by the circular color bar on the puncture needle. The operator needs to count the scale of the puncture needle exposed outside and then subtract the exposed length from the total length to obtain the insertion depth. At the operation site, the operator often needs to count the scales multiple times to determine the puncture depth, which consumes the operator's energy and affects the progress of the operation.

[0007] How to determine the angle and depth of the puncture needle conveniently and accurately is the problem we need to solve. Utility Model Content

[0008] The purpose of the utility model is to provide a radioactive particle puncture calibration device to solve the problem that the puncture angle and depth cannot be conveniently and accurately determined during puncture with a puncture needle.

[0009] The utility model is implemented as follows: a radioactive particle puncture calibration device comprises an angle plate, the shape of the angle plate is a quarter circle, an angle scale is arranged at the arc edge of the angle plate, a pendulum rod and a measuring ruler are connected at the center of the circle of the angle plate through a connecting shaft, a length scale is arranged on the surface of the measuring ruler, a penetration tube is arranged on the pendulum rod, and the pendulum rod and the measuring ruler are located on the same side of the angle plate.

[0010] The connecting shaft comprises a shaft rod arranged on the plane of the angle plate, and a fastening nut is threadedly connected to the shaft rod.

[0011] The ends of the measuring ruler and the swing rod are provided with collars, and the collars are sleeved on the shaft rod.

[0012] Angle scales are respectively arranged on two side surfaces of the angle plate, wherein the angle scale on one side is 0 to 90 degrees in the clockwise direction, and the angle scale on the other side is 0 to 90 degrees in the counterclockwise direction.

[0013] Length scales are respectively arranged on the two right-angle sides of the angle plate.

[0014] The length of the swing rod is greater than or equal to the radius length of the angle plate. The through-tube is located on one side of the swing rod close to the angle plate. After the puncture needle passes through the through-tube, it rests on the surface of the angle plate. The puncture needle and the swing rod are located on both sides of the angle plate.

[0015] The length of the measuring ruler is greater than the radius length of the angle plate.

[0016] A notch is provided on one side of the penetration tube for allowing the puncture needle to be separated from the penetration tube.

[0017] The utility model is used to determine the puncture angle and depth in radioactive particle implantation surgery. Before the implantation surgery, the tumor position is determined by CT, and the puncture point, puncture angle and depth are determined on the CT image. After the various puncture points, puncture angles and depths are determined, the utility model is used to assist in the particle implantation surgery.

[0018] The positions of the pendulum rod and the measuring ruler of the utility model are adjusted according to the puncture angle at the puncture point, the right-angle vertex of the utility model is placed at the puncture point, the angle plate is placed against the patient's skin, and then the puncture needle is passed through the puncture tube, and the puncture depth of the puncture needle is adjusted according to the determined depth. After the puncture of one puncture needle is completed, the utility model is removed, and the above steps are repeated to perform the puncture operation of the next puncture needle until the puncture operation of all puncture needles is completed.

[0019] The utility model adopts a quarter-circle angle plate structure, which is small in size and convenient for puncture operations with multiple puncture needles in one operation. The puncture angle and depth can be accurately controlled. At the same time, due to its simple structure and reusability, it is low in cost and easily accepted by general patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the other side of the utility model.

[0022] Figure 3 It is the AA arrow view of the present utility model.

[0023] Figure 4 It is a structural diagram of the swing rod and the feed-through tube of the utility model.

[0024] In the figure: 1. Angle plate; 2. Rocker rod; 3. Through tube; 4. Measuring ruler; 5. Fastening nut; 6. Shaft rod; 7. Ring. DETAILED DESCRIPTION

[0025] like Figure 1 , Figure 2 as well as Figure 3 As shown, the utility model includes an angle plate 1, a swing rod 2, a through tube 3, a measuring ruler 4 and the like.

[0026] The angle plate 1 is in the shape of a quarter circle, including an arc-shaped edge and two right-angled sides, and the two right-angled sides are perpendicular to each other.

[0027] An angle scale is provided at the arc edge of the angle plate 1, and a swing rod 2 and a measuring ruler 4 are connected at the center of the angle plate 1 through a connecting shaft, and the center position of the connecting shaft is set as the center of the angle scale. The swing rod 2 and the measuring ruler 4 can both rotate around the connecting shaft and can be fixed at corresponding positions.

[0028] The connecting shaft includes a shaft rod 6 disposed on the plane of the angle plate 1, and a fastening nut 5 is threadedly connected to the shaft rod 6. Figure 4 As shown, a collar 7 is provided at the end of the measuring ruler 4 and the pendulum 2, and the collar 7 is sleeved on the shaft 6. The collars 7 of the measuring ruler 4 and the pendulum 2 are sleeved on the shaft 6, and then the measuring ruler 4 and the pendulum 2 are limited by the fastening nut 5 to prevent them from coming out. After adjusting the positions of the measuring ruler 4 and the collar 7, tighten the fastening nut 5 to fix the positions of the measuring ruler 4 and the collar 7.

[0029] A length scale is provided on the surface of the measuring ruler 4 , the scale at the connecting shaft is 0, and the length scale values ​​along the measuring ruler 4 become larger and larger.

[0030] A penetration tube 3 is provided at the end of the rocker arm 2, and the penetration tube 3 includes a penetration hole. When in use, the puncture needle is passed through the penetration hole, and the puncture direction of the puncture needle is controlled by the guiding effect of the penetration hole. The axis of the penetration hole passes through the axis of the shaft rod 6, so that the puncture needle can just pass through the rotation center of the rocker arm 2.

[0031] Angle scales are provided on the two sides of the angle plate 1, one of which is 0 to 90 degrees in the clockwise direction, and the other is 0 to 90 degrees in the counterclockwise direction. Figure 1 For the puncture needle inserted obliquely from the left half, use Figure 2 Both sides are provided with angle scales, and a quarter-circle structure can achieve the function of a semicircle structure, which can greatly reduce the volume while meeting the requirements of use.

[0032] During particle implantation, multiple particles need to be implanted from multiple positions and multiple angles. If the angle plate 1 is large in size, the puncture needle inserted in the front may affect the puncture operation of the puncture needle at the back.

[0033] The angle plate 1 of the utility model has a radius of about 5 cm, is relatively small in size, and can be held and fixed by an operator.

[0034] Among them, Figure 3 As shown, the swing rod 2 and the measuring ruler 4 are located on the same side of the angle plate 1. The length of the swing rod 2 is greater than or equal to the radius length of the angle plate 1, and the through-tube 3 is located on the side of the swing rod 2 close to the angle plate 1. Since the through-tube 3 has a certain wall thickness, the axis of the through-hole is located on the back side of the side where the swing rod 2 is provided.

[0035] In this way, when the puncture needle passes through the through tube 3, the puncture needle is close to the surface of the angle plate 1, and the puncture needle and the swing rod 2 are located on both sides of the angle plate 1. After the puncture needle is inserted along the through tube 3, it can pass through the rotation center of the swing rod 2 without being affected by the shaft 6.

[0036] A notch is provided on one side of the threading tube 3 for detaching the puncture needle from the threading tube 3. The puncture needle is threaded into the threading tube 3. The width of the notch is slightly smaller than the diameter of the puncture needle, which can limit the puncture needle from escaping from the threading tube 3. When the utility model needs to be removed, a certain external force is applied to the utility model, and the puncture needle can be detached from the notch of the threading tube 3, thereby separating the utility model from the puncture needle that has completed the puncture operation.

[0037] Among them, the length of the measuring ruler 4 is greater than the radius length of the angle plate 1, and is generally greater than twice the radius length of the angle plate 1. When in use, the position of the measuring ruler 4 is overlapped with the position of the pendulum 2, and the puncture needle is inserted from the puncture tube 3. The depth of the puncture needle inserted into the body can be obtained by subtracting the corresponding scale on the measuring ruler 4 from the total length of the puncture needle. The length of each type of puncture needle is a fixed value, and there is no need to convert the number of color rings on the puncture needle into length and then calculate the puncture depth.

[0038] Length scales are respectively arranged on the two right-angled sides of the angle plate 1. For a puncture needle which vertically punctures into the body and has a large puncture depth and a short exposed portion, the measuring ruler 4 can be omitted and the calculation can be performed directly using the scales on the right-angled sides of the angle plate 1.

[0039] The use process of the utility model is as follows: 1. Before the implantation operation, the tumor position is determined by CT, and each puncture point and the puncture angle and depth of each puncture point are determined on the CT image; 2. The position of the pendulum 2 and the measuring ruler 4 of the utility model is adjusted according to the puncture angle at the puncture point, and the pendulum 2 and the measuring ruler 4 are fixed, and the right-angle vertex of the utility model is placed at the puncture point position, and the angle plate 1 is attached to the patient's skin; 3. The puncture needle is passed through the puncture tube 3, and the puncture depth of the puncture needle is adjusted according to the determined depth; 4. After the puncture of one puncture needle is completed, the utility model is removed, and the above steps are repeated to perform the puncture operation of the next puncture needle until the puncture operation of all puncture needles is completed.

[0040] The utility model has a small size, is convenient for puncturing multiple puncture needles in one operation, can accurately control the puncture angle and depth, and has a simple structure and can be reused, and has a low cost, which is easily accepted by general patients.

Claims

1. A radioactive particle puncture calibration device, characterized in that: It comprises an angle plate, which is in the shape of a quarter circle, has an angle scale at the arc edge of the angle plate, a pendulum rod and a measuring ruler are connected at the center of the angle plate via a connecting shaft, a length scale is provided on the surface of the measuring ruler, a through tube is provided on the pendulum rod, and the pendulum rod and the measuring ruler are located on the same side of the angle plate.

2. The radioactive particle puncture calibration device according to claim 1, characterized in that: The connecting shaft comprises a shaft rod arranged on the plane of the angle plate, and a fastening nut is threadedly connected to the shaft rod.

3. The radioactive particle puncture calibration device according to claim 2, characterized in that: The ends of the measuring ruler and the swing rod are provided with collars, and the collars are sleeved on the shaft rod.

4. The radioactive particle puncture calibration device according to claim 1, characterized in that: Angle scales are respectively arranged on two side surfaces of the angle plate, wherein the angle scale on one side is 0 to 90 degrees in the clockwise direction, and the angle scale on the other side is 0 to 90 degrees in the counterclockwise direction.

5. The radioactive particle puncture calibration device according to claim 1, characterized in that: Length scales are respectively arranged on the two right-angle sides of the angle plate.

6. The radioactive particle puncture calibration device according to claim 1, characterized in that: The length of the swing rod is greater than or equal to the radius length of the angle plate. The through-tube is located on one side of the swing rod close to the angle plate. After the puncture needle passes through the through-tube, it rests on the surface of the angle plate. The puncture needle and the swing rod are located on both sides of the angle plate.

7. The radioactive particle puncture calibration device according to claim 1, characterized in that: The length of the measuring ruler is greater than the radius length of the angle plate.

8. The radioactive particle puncture calibration device according to claim 1, characterized in that: A notch is provided on one side of the penetration tube for allowing the puncture needle to be separated from the penetration tube.

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