CN211158194U

CN211158194U - Positioning needle for tumor radiotherapy

Info

Publication number: CN211158194U
Application number: CN201822000065.2U
Authority: CN
Inventors: 陈安艳; 宓文珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-08-04
Anticipated expiration: 2028-11-30

Abstract

The utility model discloses a positioning needle for tumor radiotherapy, which comprises a shell, a fixed seat and a dye box which are respectively arranged at two port parts of the shell, a feeding needle arranged in the shell and a pushing mechanism for pushing the feeding needle, wherein a first channel, a second channel and a third channel which are mutually communicated are sequentially arranged in the shell along the central axis from left to right, one end of the second longitudinal side wall of the channel, which is close to the third channel, is provided with a distance adjusting mechanism for controlling the depth of the feeding needle entering the skin along the direction of the feeding needle moving towards the fixed seat, and one side of the second longitudinal side wall of the channel, which is close to the distance adjusting mechanism, is provided with a sterilizing lamp which is electrically connected with a micro controller, the utility model not only can adjust the depth of the positioning needle penetrating into the skin of a patient, rubber is arranged on a round hole arranged on the side wall of the dye box, thereby preventing dye from flowing, and the feeding needle can be sterilized to prevent cross infection of patients.

Description

Positioning needle for tumor radiotherapy

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a positioning needle for tumor radiotherapy.

Background

Radiation including α, β and gamma rays generated by radioactive isotopes and x rays, electron beams, proton beams and other particle beams generated by various x-ray therapeutic machines or accelerators is used for treating cancers in about 70 percent of cancer patients, and about 40 percent of cancers can be radically treated by radiotherapy.

At present, in China, generally, in the radiotherapy process of tumor and cancer patients, because the parts to be treated by radiotherapy are accurately positioned in advance, the existing technology generally uses body surface drawing marks, but the defects of the body surface drawing marks are many: for example: the body surface painting marking dye falls off and is lost due to long-term friction and sweat; during radiotherapy, especially in summer, in order to prevent the body surface markers from being lost, the patient cannot take a bath every day, and a lot of inconvenience is brought to the life of the patient; during radiotherapy, patients need to make a line for a plurality of times, the burden of the patients is increased, and the workload of medical staff is increased.

The authorized publication number is 'CN 207734471U', the Chinese patent name is 'a positioning needle for radiotherapy of tumor', the structure of the positioning needle comprises a positioning needle body, the positioning needle body comprises a needle tail part, a needle body part and a needle head part which are fixedly connected with each other, and a shell is arranged outside the needle tail part, the needle body part and the needle head part; the said shell includes the anterior part of the shell, body of shell and shell rear portion, there is a dye box on the anterior part of said shell detachablely, this patent has solved the above-mentioned problem that exists. However, the patent also has the following problems:

(1) according to the novel skin-pricking locating needle, the locating needle body is pressed manually, the locating needle penetrates into the skin surface of a human body, and the dye in the locating needle is injected into the skin, the depth of the locating needle penetrating into the skin is not easy to control due to the fact that the locating needle is pressed manually, if the locating needle penetrates into the skin shallowly, the dye can fall off along with scabs on wounds, and if the locating needle penetrates into the skin deeply, the pain feeling of a patient can be aggravated;

(2) this patent is punctured and send the dyestuff to skin in with the round hole on the dyestuff box through the needle point, when the needle point sent the dyestuff to get back to primary position, the dyestuff in the dyestuff box after using can flow out from the round hole on the dyestuff box, and not only extravagant dyestuff, the air can enter into the dyestuff box through the round hole moreover and lead to the dyestuff to be contaminated, influences next use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a problem that proposes in order to solve above-mentioned background art is used pilot pin to tumour radiotherapy.

In order to achieve the above object, the utility model provides a following technical scheme: a positioning needle for tumor radiotherapy comprises a shell, a fixing seat and a dye box which are respectively arranged at two port parts of the shell, a feeding needle arranged in the shell and a pushing mechanism used for pushing the feeding needle, wherein a first channel, a second channel and a third channel which are communicated with each other are sequentially arranged in the shell along a central axis of the shell from left to right, the caliber of the first channel is smaller than that of the second channel, the caliber of the third channel is matched with the diameter of the feeding needle, a first limit block which is in sliding connection with the second channel is arranged on the outer wall of the feeding needle, a second limit block which is in sliding connection with the first channel is fixed at one end of the feeding needle close to the fixing seat, the second limit block is made of a permanent magnet material, the second limit block is connected with the pushing mechanism arranged in the fixing seat, the pushing mechanism comprises an electromagnet which is fixed at the bottom end in the fixing seat and has the same magnetism as the second limit, the electro-magnet and the microcontroller electric connection of setting on the fixing base outer wall, the one end that two longitudinal side walls of passageway are close to the passageway three is provided with the roll adjustment mechanism who is used for controlling the pay-off needle and gets into the skin degree of depth along the direction that the pay-off needle removed to the fixing base, and one side that two longitudinal side walls of passageway are close to roll adjustment mechanism is provided with the sterilamp with microcontroller electric connection, dye box and casing port department threaded connection, and the dye box lateral wall offer with the round hole of pay-off needle looks adaptation, and be provided with the rubber sealing plug on the round hole.

Preferably, an operation window is arranged at the position, located on the distance adjusting mechanism, of the shell, and a sealing door is arranged on the operation window.

Preferably, the tip of the feeding needle is the same as the needle point of the syringe, and the outer wall of the feeding needle is provided with scale marks.

Preferably, the distance adjusting mechanism comprises a telescopic sleeve fixed on the second channel and a telescopic rod in threaded connection with the telescopic sleeve, and a limiting plate is arranged on the telescopic rod.

Preferably, a rubber layer is arranged on the surface of the limit plate.

Preferably, the sealing plug is provided with a connecting piece in threaded connection with the wall of the circular hole, and the thickness of the sealing plug is 0.5-0.7 cm.

Preferably, the moving distance of the second limiting block is smaller than or equal to the length of the first channel.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has simple structure and convenient use, and the distance between the limiting plate and the first limiting block on the feeding needle is controlled by the distance adjusting mechanism to indirectly control the depth of the feeding needle entering the skin of a patient, thereby overcoming the defects that the fading of the dye is influenced and the pain feeling is brought to the patient by the fact that the positioning needle is not easy to control the depth of the positioning needle penetrating into the skin by manually pushing the positioning needle in the prior art, in addition, a rubber sealing plug is arranged on a round hole arranged on the side wall of the dye box, when the feeding needle is separated from the rubber sealing plug, because the rubber has elasticity, the rubber at the periphery of a hole punctured by the feeding needle rebounds and blocks the hole, thereby preventing the dye from flowing out from the round hole, further preventing the air from entering the dye box from the round hole, preventing the dye from contacting with the air and being polluted by the air, not influencing the reuse of the dye, because the shell, prevent that the dust from entering into the casing and polluting the pay-off needle, be provided with the sterilamp in the casing moreover, can further carry out the virus killing and sterilization to the pay-off needle, prevent that cross infection from appearing in the patient when using next time.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of an instant structure during the operation of the present invention;

fig. 4 is a schematic view of the rubber sealing plug.

In the figure: 1. a housing; 2. a fixed seat; 3. a cartridge; 4. a feeding needle; 5. a first channel; 6. a second channel; 7. a third channel; 8. a first limiting block; 9. a second limiting block; 10. an electromagnet; 11. pushing the spring; 12. a microcontroller; 13. a sterilizing lamp; 14. a circular hole; 15. a rubber sealing plug; 16. operating a window; 17. a telescopic sleeve; 18. a telescopic rod; 19. a limiting plate; 20. a connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a positioning needle for tumor radiotherapy comprises a shell 1, a fixed seat 2 and a dye box 3 which are respectively arranged at two port parts of the shell 1, a feeding needle 4 arranged in the shell 1 and a pushing mechanism used for pushing the feeding needle 4, wherein a first channel 5, a second channel 6 and a third channel 7 which are mutually communicated are sequentially arranged in the shell 1 from left to right along the central axis of the shell, the caliber of the first channel 5 is smaller than that of the second channel 6, the caliber of the third channel 7 is matched with the diameter of the feeding needle 4, a first limit block 8 in sliding connection with the second channel 6 is arranged on the outer wall of the feeding needle 4, the feeding needle 4 is prevented from inclining in the moving process, a second limit block 9 in sliding connection with the first channel 5 is fixed at one end, close to the fixed seat 2, of the feeding needle 4, the second limit block 9 is made of a permanent magnet material, and the moving distance of the second limit block 9 is smaller than or equal, the second limiting block 9 is used for preventing the push spring 11 from inclining in the contraction process, on the other hand, the interaction force between the second limiting block 9 and the electromagnet 10 is used for providing a power source for the feeding needle 4, the second limiting block 9 is connected with the push mechanism arranged in the fixed seat 2, the push mechanism comprises an electromagnet 10 which is fixed at the bottom end inside the fixed seat 2 and has the same magnetism as the second limiting block 9, and a push spring 11, one end of the push spring is fixed on the electromagnet 10, the other end of the push spring is fixed on the second limiting block 9, the electromagnet 10 is electrically connected with a microcontroller 12 arranged on the outer wall of the fixed seat 2, one end, close to the third channel 7, of the longitudinal side wall of the second channel 6 is provided with a distance adjusting mechanism for controlling the feeding needle 4 to enter the skin depth along the direction that the feeding needle 4 moves towards the fixed seat 2, and the distance adjusting mechanism comprises a telescopic sleeve, and the telescopic link 18 is provided with a limit plate 19, the surface of the limit plate 19 is provided with a rubber layer, the acting force of the limit block I8 on the limit plate 19 is reduced, thereby prolonging the service life of the limit plate 19, one side of the longitudinal side wall of the channel II 6 close to the distance adjusting mechanism is provided with a sterilizing lamp 13 electrically connected with the microcontroller 12, the position of the shell 1 at the distance adjusting mechanism is provided with an operating window 16, which is convenient for medical personnel to adjust the length of the distance adjusting mechanism by hand, and the operating window 16 is provided with a sealing door, when the device is not used, the interior of the shell 1 of the feeding needle is in a sealing state, thereby preventing dust from entering and polluting the feeding needle 4, the tip of the feeding needle 4 is the same as the needle point of the injector, the outer wall of the feeding needle 4 is provided with scale marks, so that the medical personnel can adjust the length of the distance adjusting mechanism according, and the lateral wall of the dye box 3 is provided with a round hole 14 matched with the feeding needle 4, the round hole 14 is provided with a rubber sealing plug 15, the sealing plug 15 is provided with a connecting piece 20 in threaded connection with the wall of the round hole 14, and the thickness of the sealing plug 15 is 0.5-0.7cm, so that the rubber sealing plug 15 is convenient to replace on one hand, and dye is convenient to add into the dye box 3 on the other hand.

The working principle is as follows: when the dye box is used, firstly, dye is put into the dye box 3, then the dye box 3 is spirally fixed on the shell 1, medical staff adjusts the distance between the limiting plate 19 and the limiting block I8 by rotating the telescopic rod 18 by hands through the operation window 16 according to the requirement of the depth of the feeding needle 4 penetrating into the skin of a patient, the sealing door is closed after adjustment, then the electromagnet 10 is electrified through the controller 12, the electrified electromagnet 10 has the same magnetism as the limiting block II 9, the limiting block II 9 pushes the feeding needle 4 to penetrate through the rubber sealing plug 15 on the dye box 3 under the action of repulsive force, when the limiting block I8 touches the limiting plate 19, the feeding needle 4 stops advancing, so that the depth of the feeding needle 4 entering the skin of the patient is ensured, the dye is carried in the needle hole of the feeding needle 4 penetrating out of the dye box 3, and the feeding needle 4 carries the dye to penetrate into the skin of the patient, at the moment, the electromagnet 10 is powered off, the feeding needle 4 retracts into the shell 1 along the original path rapidly under the action of the pushing spring 11, the dye is kept in the skin due to inertia, when the feeding needle 4 is separated from the rubber sealing plug 15, due to the elasticity of the rubber, the hole punctured by the feeding needle 4 is rebounded through the rubber on the periphery of the hole, the hole is blocked, the dye is prevented from flowing out of the circular hole 14, air is also prevented from entering the dye box 3 from the circular hole 14, the dye is prevented from contacting with the air and being polluted by the air, when the feeding needle 4 returns into the shell 1, the sterilizing lamp 13 is opened to sterilize the feeding needle 4, and the cross infection of a patient in the next use is prevented.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a positioning needle for tumor radiotherapy, includes casing (1), sets up fixing base (2) and dye-box (3) in casing (1) two port department respectively, sets up pay-off needle (4) in casing (1) and is used for promoting the push mechanism of pay-off needle (4), its characterized in that: casing (1) is inside from left to right sets up passageway one (5), passageway two (6) and passageway three (7) that communicate each other in proper order along its central axis, and the bore of passageway one (5) is less than the bore of passageway two (6), the bore and the pay-off needle (4) diameter looks adaptation of passageway three (7), and the outer wall of pay-off needle (4) is provided with and passes two (6) sliding connection's stopper one (8), the one end that pay-off needle (4) is close to fixing base (2) is fixed with stopper two (9) with passageway one (5) sliding connection, and stopper two (9) are made by permanent magnet material, stopper two (9) are connected with the push mechanism who sets up in fixing base (2), and push mechanism fixes electro-magnet (10) the same with stopper two (9) magnetism and one end on electro-magnet (10) the other end and fix the push spring on stopper two (9) including fixing base (2) inside bottom (11) Electromagnet (10) and microcontroller (12) electric connection of setting on fixing base (2) outer wall, the one end that two (6) longitudinal side wall are close to three (7) of passageway is provided with the roll adjustment mechanism that is used for controlling pay-off needle (4) entering skin degree of depth along pay-off needle (4) to the direction that fixing base (2) removed, and one side that two (6) longitudinal side wall are close to roll adjustment mechanism is provided with sterilamp (13) with microcontroller (12) electric connection, dye box (3) and casing (1) port department threaded connection, and dye box (3) lateral wall offer round hole (14) with pay-off needle (4) looks adaptation, and be provided with rubber sealing plug (15) on round hole (14).

2. The positioning needle for tumor radiotherapy according to claim 1, wherein: an operation window (16) is arranged at the position, located on the distance adjusting mechanism, of the shell (1), and a sealing door is arranged on the operation window (16).

3. The positioning needle for tumor radiotherapy according to claim 1, wherein: the tip of the feeding needle (4) is the same as the needle point of the injector, and the outer wall of the feeding needle (4) is provided with scale marks.

4. The positioning needle for tumor radiotherapy according to claim 1, wherein: the distance adjusting mechanism comprises a telescopic sleeve (17) fixed on the second channel (6) and a telescopic rod (18) in threaded connection with the telescopic sleeve (17), and a limiting plate (19) is arranged on the telescopic rod (18).

5. The positioning needle for tumor radiotherapy according to claim 4, wherein: the surface of the limiting plate (19) is provided with a rubber layer.

6. The positioning needle for tumor radiotherapy according to claim 1, wherein: the sealing plug (15) is provided with a connecting piece (20) in threaded connection with the wall of the round hole (14), and the thickness of the sealing plug (15) is 0.5-0.7 cm.

7. The positioning needle for tumor radiotherapy according to claim 1, wherein: the moving distance of the second limiting block (9) is smaller than or equal to the length of the first channel (5).