Fixator for after-loading treatment implantation needle

Abstract

The utility model relates to an after-loading treatment implantation needle fixer, which effectively solves the problem that the existing implantation needle fixer is inconvenient to use. Comprising an annular main body shell, a rotatable rotating plate is coaxially arranged in the main body shell, a plurality of inclined grooves evenly distributed in the circumferential direction of the rotating plate are formed in the rotating plate, a plurality of sliding blocks which are located below the rotating plate and correspond to the inclined grooves in a one-to-one mode are slidably connected into the main body shell, and the inner ends of the sliding blocks penetrate through the main body shell and are provided with arc-shaped fixing plates; inserting columns inserted into the inclined grooves are arranged at the upper ends of the sliding blocks; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a posterior loading therapy technical field, especially a posterior loading therapy implant needle fixer. BACKGROUND

[0002] The implant needle is a source applicator used in the posterior loading therapy implantation technology, and the operator needs to confirm the implantation depth through examination when the patient is treated by the implantation technology. Since the implant needle is small and cannot be marked with length, the implant needle needs to be sleeved with the fixer to fix the depth. The depth is the length from the needle tip to the fixed position. The purpose of the fixer is to accurately control the implantation depth and to block the skin to prevent the implant needle from being inserted too deep to cause accidents. After the implantation, CT scanning, target drawing, plan design, plan evaluation and treatment are carried out, and then the needle is pulled out after the treatment is completed.

[0003] The traditional fixing device is a circular rubber particle (diameter greater than 1cm, thickness greater than 0.5cm). The implant needle needs to be inserted into the center of the rubber particle with force, and then moved to the required depth position. However, the traditional fixer has the following defects in use: 1. Since the fixation relies on the elasticity of rubber, the fixation tightness cannot be adjusted. When the implant needle position needs to be adjusted before treatment, it is not convenient to adjust; 2. Since the material is rubber, sometimes the operator makes a mistake and needs to insert the fixer again. At this time, the elasticity of the secondly inserted rubber fixing particle is poor, which easily leads to poor fixing effect and the risk of displacement and slipping of the implant needle. CONTENT OF THE UTILITY MODEL

[0004] In view of the above situation, in order to make up for the deficiency of the prior art, the purpose of the utility model is to provide a posterior loading therapy implant needle fixer, which effectively solves the problem of inconvenient use of the existing implant needle fixer.

[0005] The technical solution solved by the utility model is that the utility model comprises a ring-shaped main body shell, a rotatable rotating plate is coaxially arranged in the main body shell, a plurality of inclined grooves are formed in the rotating plate and are uniformly distributed along the circumferential direction of the rotating plate, a plurality of sliding blocks corresponding to the inclined grooves are slidably connected below the rotating plate in the main body shell, an arc-shaped fixing plate is arranged at the inner end of the sliding block and penetrates the main body shell, and an insertion column is arranged at the upper end of the sliding block and inserted into the inclined groove.

[0006] Preferably, the rotating plate is coaxially and rotatably connected with the main body shell, a gear is coaxially arranged at the lower end of the rotating plate, and a rack is slidably connected in the main body shell and engaged with the gear.

[0007] Preferably, the free end of the rack penetrates the main body shell and is provided with a pressing plate.

[0008] Preferably, the first end of the inclined groove gradually inclines to the axis direction of the main body shell in the counterclockwise direction.

[0009] Preferably, the outer end of the sliding block is provided with a reset plate, which is connected with the main body shell through a spring.

[0010] Preferably, the lower end of the main body shell is provided with a sponge pad.

[0011] Preferably, the arc surface of the fixing plate is provided with an anti-skid layer.

[0012] Preferably, the main body shell, the rotating plate, the sliding block and the like are made of medical plastic.

[0013] Compared with the prior art, the beneficial effects of the utility model are that the fixing and limiting of the implantation needle can be realized, the fixing and limiting can be quickly released, compared with the traditional rubber particle fixator, the implantation needle can be adjusted before treatment, the implantation needle can be used for many times, and cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the front view of the utility model.

[0015] Figure 2 is the full-section front view of the utility model.

[0016] Figure 3 is the full-section plan view of the utility model.

[0017] Figure 4 is the full-section bottom view of the utility model.

[0018] Figure 5 is the full-section plan view of the utility model.

[0019] Figure 6 is the view of the utility model after removing the main body shell.

[0020] REFERENCE SIGNS:

[0021] 1, main body shell; 2, rotating plate; 3, inclined groove; 4, sliding block; 5, fixing plate; 6, insertion column; 7, gear; 8, rack; 9, pressing plate; 10, reset plate; 11, spring. DETAILED DESCRIPTION

[0022] In order to make the above purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the specific implementation of the utility model is described in detail below in combination with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed basic implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "may" and "can" include any one of, or all of, the possible combinations of the aspects described.

[0024] The specific embodiments of the application will be further described in conjunction with the drawings.

[0025] By Figures 1 to 6 It is given, including the annular main shell 1, the main shell 1 is coaxial with rotatable rotating plate 2, rotating plate 2 is provided with a plurality of inclined grooves 3 along the circumferential direction of the uniform distribution, the main shell 1 is slidably connected with a plurality of located below the rotating plate 2 and with inclined groove 3 one-to-one corresponding slider 4, slider 4 inner end through the main shell 1 and is equipped with the arc-shaped fixed plate 5, slider 4 upper end is provided with the insertion column 6 inserted into the inclined groove 3.

[0026] In order to make the rotating plate 2 rotate, the rotating plate 2 is coaxially connected with the main shell 1, the lower end of the rotating plate 2 is coaxially provided with a gear 7, and the main shell 1 is slidably connected with a gear rack 8 engaged with the gear 7.

[0027] In order to facilitate the pressing of the gear rack 8, the free end of the gear rack 8 penetrates the main shell 1 and is provided with a pressing plate 9.

[0028] In order to facilitate the use, the first end of the inclined groove 3 gradually inclines to the axis direction of the main shell 1 in the counterclockwise direction.

[0029] In order to facilitate the reset of the slider 4, the outer end of the slider 4 is provided with a reset plate 10, and the reset plate 10 is connected with the main shell 1 through a spring 11.

[0030] In order to prevent the patient's skin from being pressed, the lower end of the main shell 1 is provided with a sponge pad.

[0031] In order to facilitate the increase of the fixing effect, the arc surface of the fixed plate 5 is provided with an anti-skid layer.

[0032] In order to reduce the weight, the main shell 1, the rotating plate 2, the slider 4 and the like are made of medical plastic.

[0033] The utility model in using, first press the pressing plate 9, the pressing plate 9 drives the gear rack 8 to move to right, the gear rack 8 moves and engages with the gear 7 and drives the gear 7 to rotate counterclockwise, the gear 7 drives the inclined groove 3 on it to rotate counterclockwise, and then drives a plurality of sliders 4 to move away from the axis direction of the main shell 1 through the insertion column 6, and then drives a plurality of fixed plates 5 to move outward, after moving outward for a distance, at this time, the insertion needle is inserted into the main shell 1.

[0034] Then the pressing plate 9 is loosened, a plurality of sliding blocks 4 are driven to move to the main shell 1 axis direction due to the restoring force of the spring 11, and then a plurality of fixed plates 5 are driven to move to the middle, the distance between the needle tip and the main shell 1 is the insertion depth, after moving to the middle for a distance, a plurality of fixed plates 5 contact the surface of the implantation needle and realize the fixation and limiting of the implantation needle, and the implantation needle is automatically centered and positioned in the axial position of the main shell 1, at this time, a plurality of fixed plates 5 realize the fixation and limiting of the implantation needle;

[0035] At this time, the implantation needle can be inserted into the treatment site, and then the main shell 1 is attached to the surface skin, at this time, since the position is determined in advance, the implantation needle is inserted into the patient's lesion, at this time, the implantation after loading treatment can be carried out, when the treatment is completed, the implantation needle is taken out from the patient's body, and then the pressing plate 9 is pressed again to drive the rack 8 to move and drive the rotating plate 2 to rotate through the gear 7, and then a plurality of sliding blocks 4 are driven to move outward, and the fixed plate 5 is driven to move outward, after moving outward for a distance, the fixed plate 5 is out of contact with the surface of the implantation needle, the fixation and limiting are released, and the implantation needle is extracted from the main shell 1 for disinfection.

[0036] Compared with the prior art, the beneficial effects of the utility model are that the main shell, the sliding block and the fixed plate can realize the fixation and limiting of the implantation needle, and the fixation and limiting can be quickly released, compared with the traditional rubber particle fixator, the implantation needle can be adjusted before treatment, and the implantation needle can be used multiple times, cost is saved, the structure is simple, the conception is novel, the use is convenient, and the practicality is strong.

[0037] It should be noted that according to the needs of implementation, each component described in the embodiments of the utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the utility model.

[0038] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A brachytherapy seed needle holder comprising a ring-shaped main body case (1), characterized in that, The main body shell (1) is coaxially provided with a rotatable rotating plate (2), the rotating plate (2) is provided with a plurality of inclined grooves (3) distributed along the circumferential direction, the main body shell (1) is slidably connected with a plurality of sliders (4) corresponding to the inclined grooves (3) below the rotating plate (2), the inner end of the slider (4) penetrates the main body shell (1) and is provided with an arc-shaped fixed plate (5), and the upper end of the slider (4) is provided with an insertion column (6) inserted into the inclined groove (3).

2. A brachytherapy seed needle holder according to claim 1, wherein, The rotating plate (2) is coaxially connected with the main body shell (1), the lower end of the rotating plate (2) is coaxially provided with a gear (7), and the main body shell (1) is slidably connected with a rack (8) engaged with the gear (7).

3. A brachytherapy seed needle holder according to claim 2, wherein, The free end of the rack (8) penetrates the main body shell (1) and is provided with a pressing plate (9).

4. A brachytherapy seed needle holder according to claim 1, wherein, The first end of the inclined groove (3) gradually inclines to the axis direction of the main body shell (1) in the counterclockwise direction.

5. A brachytherapy seed needle holder according to claim 1, wherein, The outer end of the slider (4) is provided with a reset plate (10), and the reset plate (10) is connected with the main body shell (1) through a spring (11).

6. A afterloading implant needle holder in accordance with claim 1, characterized in that The lower end of the main body shell (1) is provided with a sponge pad.

7. A afterloading implant needle holder in accordance with claim 1, characterized in that The arc surface of the fixed plate (5) is provided with an anti-skid layer.

8. A posterior brachytherapy seed needle holder according to claim 1, wherein, The main body shell (1), the rotating plate (2) and the slider (4) are all made of medical plastic.

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