CN214158305U

CN214158305U - Dose measuring device and dose verification device

Info

Publication number: CN214158305U
Application number: CN202022420827.1U
Authority: CN
Inventors: 黄雪薇; 盛卓谋
Original assignee: SHENZHEN AOWO MEDICAL NEW TECHNOLOGY DEVELOPMENT CO LTD; Our United Corp
Current assignee: SHENZHEN AOWO MEDICAL NEW TECHNOLOGY DEVELOPMENT CO LTD; Our United Corp; Shenzhen Our New Medical Technologies Development Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-09-10
Anticipated expiration: 2030-10-27

Abstract

The application provides a dose measuring device and dose verification device, this dose measuring device includes: the plug board comprises a plug board main body, wherein the plug board main body is provided with a containing hole, a distance measuring part and an inserting piece, and the depth of the inserting piece inserted into the containing hole is adjustable; the distance measuring part is connected with the insert or is arranged on the insert, and the depth of the insert inserted into the accommodating hole is adjustable and used for indicating the depth of the insert inserted into the accommodating hole. The dose measuring device can avoid the problem of too few measuring positions during dose measurement.

Description

Dose measuring device and dose verification device

Technical Field

The application relates to the technical field of medical equipment, in particular to a dose measuring device and a dose verifying device.

Background

With the rapid development of medicine, Stereotactic Radiation Therapy (SRT) is an important means for treating tumors. Because the location, morphology, and size of tumors in the human body are random, the SRT technique relies on accurate localization and accurate radiation dosimetry of the tumor. When dose measurement is carried out, an ionization chamber is often needed, and the ionization chamber needs to be arranged on a dose measuring device. Due to the influence of the shape, size and thickness of tumor tissues in a human body, multiple dose measurement in a tumor target area is necessary, but a dose measuring device in the related technology only has three fixed installation positions, and the measurement positions are too few, so that the measurement requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, embodiments of the present application provide a dose measuring device and a dose verification device to at least partially solve the above problems.

According to a first aspect of embodiments of the present application, there is provided a dose measurement device comprising: the plug board main body is provided with a containing hole; the depth of the insert inserted into the accommodating hole is adjustable; and the distance measuring part is arranged on the insert or connected with the insert and is used for indicating the depth of the insert inserted into the accommodating hole.

Optionally, the ranging portion includes an indication scale provided on the insert and movable with the insert within the receiving hole to indicate a depth of insertion of the insert into the receiving hole.

Optionally, the distance measuring part includes: the positioning piece is provided with a positioning mark; the range finding body, the range finding body is worn to establish in the setting element, and range finding body and setting element but relative movement are provided with the instruction scale on the range finding body, and the plug-in components perhaps can range finding body removal relatively with range finding body synchronous motion, and the instruction scale that the alignment mark corresponds indicates the degree of depth that the plug-in components inserted the accommodation hole.

Optionally, the inserting piece is connected with the positioning piece and moves relative to the ranging body under the driving of the positioning piece.

Optionally, the distance measuring part includes: the distance indicating piece is provided with main indicating scales, and the main indicating scales comprise a plurality of scales which are sequentially arranged along the axial direction of the accommodating hole; the adjusting assembly comprises a first knob, the first knob is connected with the inserting piece, the first knob is sleeved outside the distance indicating piece and drives the inserting piece to rotate and step along the distance indicating piece, and the main indication scale of the adjusting assembly at the corresponding position on the distance indicating piece indicates the depth of the inserting piece inserted into the accommodating hole.

Optionally, the first knob is provided with an auxiliary indication scale, and the auxiliary indication scale includes a plurality of scales sequentially arranged along the circumferential direction of the accommodating hole.

Optionally, the adjustment assembly further comprises a second knob, the second knob being connected to the insert and driving the insert and the first knob to rotate.

According to another aspect of the present invention, a dose verification device is provided, comprising a dose measuring device as described above.

Optionally, the insert comprises an ionization chamber probe insertable in a receiving hole of a cartridge body of the dosage measuring device.

Optionally, the insert of the dose measuring device further comprises a plug inserted into the receiving hole from a first end of the receiving hole, and the ionization chamber probe is inserted into the receiving hole from a second end of the receiving hole and abuts against the plug.

The dose measuring device in the embodiment of the application, the containing hole is formed in the plug board main body and used for containing the insert, the depth of the insert inserted into the containing hole is adjustable, so that when the insert and the ionization chamber probe are used, the position of the ionization chamber probe in the containing hole can be determined through the inserted depth of the insert, the position of the insert in the containing hole can be adjusted according to the position to be measured, and the distance measuring part is connected with the insert or arranged on the insert.

Drawings

The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application.

Fig. 1 shows a schematic view of a dose measuring device according to a first embodiment of the present application;

FIG. 2 is a schematic view showing the structure of a distance measuring section in a dose measuring device according to the second embodiment of the present application;

fig. 3 shows a schematic view of a dose measuring device according to a third embodiment of the present application;

FIG. 4 shows a partial enlarged view at A in FIG. 3;

fig. 5 shows a schematic view of another dose-measuring device according to a third embodiment of the present application.

Description of reference numerals:

1. a board main body; 2. an accommodation hole; 3. a distance measuring unit; 311. a positioning member; 312. positioning a mark; 313. a locking member; 314. jacking the screw tightly; 32. a ranging body; 321. indicating scales; 4. an insert; 51. a distance indicator; 511. a main indication scale; 53. an adjustment assembly; 531. a first knob; 532. a secondary indication scale; 533. a second knob.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

Example one

Referring to fig. 1-2, a dose measuring device according to a first embodiment of the present application includes a socket body 1, a distance measuring part 3, and an insert 4; the plugboard main body 1 is provided with a containing hole 2; the depth of the insert 4 inserted into the receiving hole 2 is adjustable, the distance measuring part 3 is provided on the insert 4 or connected with the insert 4, and the distance measuring part 3 is used for indicating the depth of the insert 4 inserted into the receiving hole 2.

The insert plate main body 1 is provided with a containing hole 2, the containing hole 2 is used for containing an insert 4, the depth of the insert 4 inserted into the containing hole 2 can be adjusted, so that when the insert 4 is matched with an ionization chamber probe or the ionization chamber probe is used as the insert 4, the position of the ionization chamber probe in the containing hole 2 can be determined according to the depth of the insert 4, and the depth of the insert in the containing hole can be adjusted according to the position of the ionization chamber probe to be measured, so that the ionization chamber probe can reach the position to be measured.

Because the distance measuring part 3 is connected with the insert 4 or arranged on the insert, the distance measuring part 3 can accurately measure the depth of the insert 4 inserted into the accommodating hole 2, so as to accurately determine the installation position of the ionization chamber probe in the accommodating hole 2, and the ionization chamber probe can be adjusted to any position of the accommodating hole by adjusting the insertion depth of the insert 4, thereby avoiding the problem of too few measuring positions during dose measurement.

In the present embodiment, the shape of the board main body 1 is not limited, and as an example, the board main body 1 may be a rectangular parallelepiped with rounded corners, and the shape and the material thereof may be determined as needed.

The receiving hole 2 may penetrate the board body 1 in a length direction of the board body 1 so that an insert may be easily inserted into the receiving hole.

Alternatively, the axis of the receiving hole 2 may coincide with or deviate from the widthwise central line of the board main body 1 but be parallel thereto. The position of the receiving opening 2 can be determined according to the specific measurement requirements.

In one possible way, the distance measuring part 3 comprises a positioning piece 311 and a distance measuring body 32. The positioning piece 311 is provided with a positioning mark 312; the ranging body 32 is arranged in the positioning part 311 in a penetrating manner, the ranging body 32 and the positioning part 311 can move relatively, the ranging body 32 is provided with indication scales, the inserting piece 4 and the ranging body 32 move synchronously or can move relatively to the ranging body 32, and the indication scales corresponding to the positioning marks 312 indicate the depth of the inserting piece 4 inserted into the accommodating hole.

In this way, when the insert 4 moves in the accommodating hole 2, one of the positioning member 311 and the ranging body 32 can be moved, so that the indication scale corresponding to the positioning mark 312 changes, thereby determining the depth of the insert 4 in the accommodating hole 2.

In one case, as shown in fig. 1, an ionization chamber probe is used as the insert 4 (not shown in fig. 2), in which case, the insert 4 is connected to the positioning member 311 and is moved relative to the distance measuring body 32 by the positioning member 311.

Specifically, the distance measuring body 32 is inserted into the first mounting hole of the positioning member 311, such that the distance measuring body 32 and the positioning member 311 can move relatively. The positioning member 311 also has a second mounting hole for receiving a connecting wire on the ionization chamber probe.

In use, the ranging body 32 can be fixedly connected to the main body of the insert plate, or fixedly connected to other fixed objects (such as a treatment couch or a gantry of a radiotherapy apparatus).

The ionization chamber probe can pass through the second mounting hole on the positioning member 311, and a part of the connecting wires of the ionization chamber probe are located in the second mounting hole, when the first end of the ionization chamber probe is located at the first end of the accommodating hole 2, the positioning mark 312 on the positioning member 311 corresponds to the 0 scale on the ranging body 32.

At this time, the connecting wire is pressed by the pressing screw 314 of the positioning member 311, so that the connecting wire cannot move relative to the positioning member 311. The ionization chamber probe can be driven to move in the accommodating hole 2 by moving the positioning part 311, the indication scale corresponding to the positioning mark 312 indicates the moving depth of the ionization chamber probe, and when the indication scale corresponding to the positioning mark 312 meets the requirement, the movement of the positioning part 311 can be stopped.

Alternatively, the insert 4 may comprise a plug, which may be rod-like or of other suitable shape. The plug can be inserted into the accommodating hole 2 at the same side as the ionization chamber probe, and the first end of the ionization chamber probe is flush with the insertion end of the plug when the plug is inserted at the same side; or the plug is inserted into the accommodating hole 2 from different sides, and when the plug is inserted from different sides, the plug is abutted against the ionization chamber probe.

Taking the same-side insertion as an example, in this case, the insertion member 4 can move synchronously with the distance measuring body 32, and the distance measuring body 32 moves to drive the insertion member 4 to move relative to the accommodating hole 2, and at the same time, the indication scale 321 corresponding to the positioning mark 312 on the positioning member 311 also changes, so as to read the insertion depth according to the change of the scale.

Optionally, in order to prevent the distance measuring body 32 and the positioning member 311 from moving relatively when the insert 4 reaches the predetermined depth of the accommodating hole 2, and ensure the positioning accuracy, the distance measuring part 3 further includes a locking member 313, and the locking member 313 is disposed on the positioning member 311 to prevent the distance measuring body 32 from moving relative to the positioning member 311.

The locking member 313 may be a screw threadedly coupled to the positioning member 311, and the screw is inserted into the positioning member 311 and screwed to a locking position contacting the ranging body 32. When the locking member 313 is screwed to the locking position, the distance measuring body 32 is pressed tightly by the locking member 313, so that the friction between the distance measuring body 32 and the positioning member 311 is large enough to prevent the distance measuring body and the positioning member from moving relatively.

When the distance measuring body 32 and the positioning member 311 need to move relatively, the screw can be screwed reversely to be separated from the locking position.

Example two

Referring to fig. 2, the difference between the dose measuring device of the present embodiment and the dose measuring device of the first embodiment is the structure of the distance measuring unit 3, and other parts can be implemented in the same manner as in the first embodiment, and therefore, detailed description thereof is omitted.

In this embodiment, the insert 4 comprises a plug, which may be rod-shaped or of another suitable shape. The distance measuring part 3 of the present embodiment is provided on the insert 4, and the distance measuring part 3 includes an indication scale which is provided on the insert 4 and moves with the insert 4 within the accommodation hole 2 to indicate the depth of insertion of the insert 4 into the accommodation hole 2. The distance measuring part of this structure is simple in structure, and since the distance measuring part 3 is provided on the insert 4 and can move therewith, accurate depth measurement can be ensured.

In a specific example, the indication scale may be a plurality of scales on a scale, which is affixed to the insert 4. The scale may comprise a substrate of flexible material which allows it to better adhere to the insert 4 and a plurality of graduations provided on the substrate which may be used to indicate distance and depth so that the depth of insertion of the insert 4 can be determined by reading the graduations.

Alternatively, in another specific example, the indication scale is a plurality of scales engraved on the insert 4. Directly forming the scale on the insert 4 not only ensures reading of the scale to determine depth, but also makes the structure simpler and easier to process.

When the device is used for measurement, the ionization chamber probe and the plug of the insert 4 are inserted from different sides of the accommodating hole 2, in order to enable the position where the ionization chamber probe is inserted to meet the requirement, the insertion depth of the insert 4 needs to be adjusted to the required depth, so that when the ionization chamber probe is abutted and matched with the insert 4, the position where the ionization chamber probe is located meets the requirement, and in order to prevent the insert 4 from moving relative to the plug plate main body 1 when reaching the preset depth of the accommodating hole 2, the inaccurate positioning or inaccurate depth measurement is caused, a stop piece is arranged between the insert 4 and the accommodating hole 2, and when the insert 4 is inserted into the accommodating hole 2 for the preset depth, the stop piece prevents the insert 4 from moving relative to the accommodating hole 2.

For example, the stopper may be a non-slip leather pad, a suction cup, or the like, provided between the insert 4 and the receiving hole 2. Alternatively, the stopper may be a screw thread provided in the receiving hole 2, and the movement of the insert 4 with respect to the insert body 1 when reaching the receiving hole 2 by a predetermined depth is prevented by screwing.

EXAMPLE III

Referring to fig. 3 to 5, the difference between the dose measuring device of the present embodiment and the first embodiment is the structure of the distance measuring unit 3, and the other embodiments can be implemented as the first embodiment, and therefore are not described again.

In this embodiment, the insert 4 may be a plug, which may be an externally threaded screw. The screw may be inserted with the ionization chamber probe from a different side of the receiving bore.

The distance measuring part 3 may include a distance indicator 51 and an adjusting member 53; the distance indicator 51 is provided with a main indicating scale 511, and the main indicating scale 511 comprises a plurality of scales which are sequentially arranged along the axial direction of the accommodating hole 2; the adjusting assembly 53 includes a first knob 531, the first knob 531 is connected to the insert 4, the first knob 531 is sleeved outside the distance indicator 51 and drives the insert 4 to rotate and step along the distance indicator 51, and a main indicating scale 511 of the adjusting assembly 53 at a corresponding position on the distance indicator 51 indicates a depth of the insert 4 inserted into the receiving hole 2.

For example, the insert 4 may be threadedly engaged with the distance indicator 51, the insert 4 may pass through the distance indicator 51 and extend into the receiving hole 2, the first knob 531 may be sleeved outside the distance indicator 51, the first knob may be connected with the insert, and when the first knob 531 is rotated, the insert 4 may be moved stepwise, thereby adjusting the depth of the insert 4 in the receiving hole 2.

Optionally, a secondary indication scale 532 is provided on the first knob 531, and the secondary indication scale 532 includes a plurality of scales sequentially provided along the circumferential direction of the receiving hole 2. Because the precision of vice instruction scale is higher than main instruction scale precision, consequently can promote the accuracy of reading through setting up vice instruction scale.

Alternatively, referring to fig. 5, in order to improve the accuracy of measuring the depth of the insert 4 inserted into the receiving hole 2, the adjusting assembly 53 further includes a second knob 533, and the second knob 533 is connected to the insert 4 and drives the insert 4 and the first knob 531 to rotate.

In this embodiment, since the second knob 533 can drive the insert 4 and the first knob 531 to rotate at a small angle, the insert 4 can be adjusted by the second knob 533 when the insert 4 is not required to rotate for a full turn, so that the depth of the insert 4 can be more accurate, and therefore, when the insert is adjusted by using the second knob 533, the adjustment precision is higher than that when the insert is adjusted by using the first knob 531, so that the depth of the insert 4 in the accommodating hole 2 can be more accurately measured by adjusting the second knob 533, and the insertion position of the ionization chamber plug during dose measurement can be accurately positioned.

Alternatively, in another possibility, if the insert is an ionization chamber probe, the insert 4 is fixedly connected to the first knob 531 by a connecting member, the connecting member being connected to the first knob 531, the insert 4 being fixedly arranged at a first end of the connecting member. The connecting member may be a screw or other structure, and the embodiment is not limited thereto.

The dose measuring device of the present application can measure the dose at any position in the accommodating hole 2, thereby avoiding the problem of too few measuring positions during dose measurement.

In addition, in the dose measuring device in the prior art, because the insertion angles of the ionization chamber probes are different, when dose measurement is performed, the dose measurement value has an error due to the angle distribution, and the maximum difference value is 3%.

Example four

An embodiment of the present application provides a dose verification device, which includes a dose measurement device as described in any one of the foregoing embodiments one to three.

Therefore, since the dose verification device in the embodiment of the present application uses the dose measuring device as described above, the distance measuring portion 3 is connected to the insert 4, or is disposed on the insert 4, so that the depth of the insert 4 inserted into the receiving hole 2 can be measured, and the mounting position of the ionization chamber probe in the receiving hole 2 can be adjusted according to the depth of the insert 4 inserted into the receiving hole 2, thereby avoiding the problem of too few measuring positions during dose measurement.

Alternatively, in an embodiment of the present application, the insert 4 of the dosage-measuring device may comprise an ionization chamber probe that is insertable into the receiving hole 2 of the cartridge body 1 of the dosage-measuring device.

Optionally, in the embodiment of the present application, the insert 4 of the dose measuring device may further include a plug, the plug is inserted into the receiving hole 2 from a first end of the receiving hole 2, and the ionization chamber probe is inserted into the receiving hole 2 from a second end of the receiving hole 2 and abuts against the plug.

In the present embodiment, after setting a preset measuring position in the receiving hole, the ionization chamber plug can be inserted into the preset measuring position according to the depth by adjusting the depth of the insertion member 4 inserted into the receiving hole 2, obviously, the preset measuring position can be any position in the receiving hole 2, and therefore, the dose verification device can avoid the problem of too few measuring positions during dose measurement.

The dose measuring device can measure the radiation dose and can also be applied to verify the absolute dose in the treatment plan. For example, when in use, the insert 4 is inserted into the accommodating hole 2 from the first end of the accommodating hole 2 of the board main body 1, and the insertion depth is measured by the distance measuring part, so that the insertion depth of the insert 4 is ensured to meet the requirement. For example, if the total length of the receiving hole 2 is 100mm, the coordinate corresponding to the first end of the receiving hole 2 is 50mm, the coordinate corresponding to the second end is-50 mm, and the radiation dose at the position of-10 mm needs to be measured, the insert 4 can be inserted to a depth of 90mm to ensure the coordinate of the insertion end of the insert 4 is-10 mm, and then the ionization chamber probe is inserted from the second end of the receiving hole 2 to abut against the insert 4, so that the ionization chamber probe can be reliably positioned.

Then, inserting the positioned plug board main body 1 with the ionization chamber probe into the simulation die body, and then placing the simulation die body at the position to be measured.

In addition, the position of the ionization chamber probe in the accommodating hole 2 can be adjusted as required, the position of the ionization chamber probe in the accommodating hole 2 can be determined by determining the insertion depth of the insert 4, the position of the ionization chamber probe on the simulation die body is determined by combining the relative position of the accommodating hole 2 and the simulation die body, and then the ionization chamber probe is used for measuring the radiation dose at the position or verifying the radiation dose of the target region corresponding to the position.

Because only one accommodating hole 2 is arranged and the problem of insertion angle cannot exist after the probe is matched on the simulation die body, the head of the ionization chamber probe is positioned on the straight line where the focal point of ray focusing is positioned after the ionization chamber probe is inserted, measurement value errors caused by different insertion angles of different ionization chamber probes in the prior art are avoided, and the detection accuracy is ensured.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A dose measuring device, comprising:

the plug board comprises a plug board main body (1) provided with a containing hole (2);

an insert (4) that is inserted into the receiving hole (2) to an adjustable depth;

a distance measuring section (3) which is provided on the insert (4) or is connected to the insert (4) and indicates the depth of insertion of the insert (4) into the receiving hole (2).

2. Dose measuring device according to claim 1, characterized in that the distance measuring portion (3) comprises an indication scale which is provided on the insert (4) and moves with the insert (4) within the receiving hole (2) to indicate the depth of insertion of the insert (4) into the receiving hole (2).

3. Dose measuring device according to claim 1, characterized in that said distance measuring section (3) comprises:

the positioning piece (311), wherein a positioning mark (312) is arranged on the positioning piece (311);

range finding body (32), range finding body (32) are worn to establish in setting element (311), just range finding body (32) with setting element (311) relative movement, be provided with the instruction scale on range finding body (32), insert (4) with range finding body (32) synchronous movement perhaps can be relative range finding body (32) remove, location mark (312) correspond indicate that insert (4) insert the degree of depth of accommodation hole (2).

4. Dose measuring device according to claim 3, characterized in that the insert (4) is connected to the positioning element (311) and is moved relative to the distance measuring body (32) by the positioning element (311).

5. Dose measuring device according to claim 1, characterized in that said distance measuring section (3) comprises:

the distance indicating piece (51), a main indicating scale (511) is arranged on the distance indicating piece (51), and the main indicating scale (511) comprises a plurality of scales which are sequentially arranged along the axial direction of the accommodating hole (2);

adjusting part (53), adjusting part (53) include first knob (531), first knob (531) with insert (4) are connected, first knob (531) cover is located distance indicator (51) is outer and drive insert (4) are followed distance indicator (51) rotatory step-by-step, adjusting part (53) are in main instruction scale (511) that corresponds the position on distance indicator (51) indicate insert (4) to insert the degree of depth of accommodation hole (2).

6. Dose measuring device according to claim 5, characterized in that said first knob (531) is provided with a secondary indication scale (532), said secondary indication scale (532) comprising a plurality of scales arranged one after the other in the circumferential direction of said receiving hole (2).

7. Dose measuring device according to claim 6, characterized in that said adjustment assembly (53) further comprises a second knob (533), said second knob (533) being connected to said insert (4) and driving in rotation said insert (4) and said first knob (531).

8. Dose verification device, characterized in that it comprises a dose measuring device according to any one of claims 1-7.

9. Dose verification device according to claim 8, characterized in that the insert (4) comprises an ionization chamber probe insertable in a receiving hole (2) of a cartridge body (1) of the dose measuring device.

10. Dose verification device according to claim 9, characterized in that the insert (4) of the dose measuring device further comprises a plug inserted into the receiving hole (2) from a first end of the receiving hole (2), the ionization chamber probe being inserted into the receiving hole (2) from a second end of the receiving hole (2) and abutting against the plug.