CN219090882U - Medical scattering optical fiber head - Google Patents

Abstract

The utility model relates to an optical fiber head, in particular to a medical scattering optical fiber head, which aims to solve the defects of lower treatment efficiency and complex manufacturing process caused by the fact that the illumination area of a spherical optical fiber head is limited and illumination is uneven in the prior art. A medical scattering optical fiber head comprises a tube cap and light scattering particles; the tube cap is internally provided with a cavity, and is provided with an opening which is used for being connected with the light emitting end of the optical fiber; the light scattering particles are filled in the cavity of the pipe cap, are fused quartz powder or powdery substances which can bear laser irradiation and are transparent to the laser wavelength, the laser is conveniently irradiated to a treated area which is difficult to directly reach the light emitting end of the optical fiber by scattering the laser, and the heat damage of the laser to the treated area can be avoided by the larger irradiation area and the lower irradiation power density, so that the treatment efficiency is improved, and the pain of a patient is reduced.

Description

Medical scattering optical fiber head

Technical Field

The utility model relates to an optical fiber head, in particular to a medical scattering optical fiber head.

Background

Along with the acceleration of the life rhythm and the change of life style, the human body cavity (oral cavity, alimentary canal and stomach) is subjected to more and more bacterial infections, and aiming at the bacterial infections, medicines are mainly adopted to treat the diseases at present, but the sterilization eradication rate of the medicines is not high, and along with the abuse of antibacterial medicines, the drug resistance of bacteria is also continuously increased, so that bacterial infectious diseases are more and more difficult to cure. At the beginning of the 20 th century, photodynamic therapy (PDT) has been found to inactivate bacteria, so that specific bacterial infections can be treated by the photodynamic effect produced by light of specific wavelength bands and photosensitizers. The optical fiber is used as a main path of light wave transmission, plays an irreplaceable role in photodynamic therapy, and the illumination area of the spherical optical fiber head used in the prior art is limited, so that the illumination is uneven, the treatment efficiency is low, and a patient suffers from long-time pain; and the manufacturing process of the spherical optical fiber head is complicated.

Disclosure of Invention

The utility model provides a medical scattering optical fiber head, which aims to solve the defects of lower treatment efficiency and complex manufacturing process caused by limited illumination area and uneven illumination of a spherical optical fiber head in the prior art.

In order to achieve the above purpose, the technical solution provided by the present utility model is as follows:

a medical scattering optical fiber head is characterized in that: comprises a tube cap and light scattering particles; the inside of the tube cap is provided with a cavity, and the tube cap is provided with an opening which is used for being connected with the light emitting end of the optical fiber; the light scattering particles are filled in the cavity of the cap.

Further, the pipe cap comprises a cylindrical shell, a cavity is formed in the cylindrical shell, and one end of the cylindrical shell is an open end and is used for being sleeved at the light emitting end of the optical fiber; the outline of the end part of the other end is arc-shaped, and the front end can be prevented from scratching target tissues in the using process.

Further, the pipe cap comprises a spherical shell, and the spherical shell is provided with an outwards extending connecting port which is used for being sleeved at the light emitting end of the optical fiber.

Further, the light scattering particles are fused quartz powder or glass powder, and the particle sizes of the fused quartz powder and the glass powder are respectively 100-2000 meshes.

Further, the granularity of the fused quartz powder is 700-1100 meshes.

Further, the granularity of the fused quartz powder is 800-1000 meshes.

Further, the pipe cap is in sealing connection with the light emitting end of the optical fiber.

Compared with the prior art, the utility model has the following advantages:

1. the medical scattering optical fiber head is provided with the light scattering particles filled in the cavity of the pipe cap, the far end of the optical fiber is connected with the laser equipment in the using process, and the near end of the optical fiber is connected with the scattering optical fiber head in a sealing way and is inserted into the protection device, if the scattering optical fiber head is arranged in an endoscope, the optical fiber head reaches a treatment position without rotating the optical fiber angle, and the laser has a larger irradiation area under the action of the pipe cap and the light scattering particles and irradiates the treatment area according to the treatment requirement; the larger irradiation area can enable laser to irradiate to a treated area which is difficult to directly reach by the light emitting end of the optical fiber, and the lower irradiation power density is formed through scattering, so that the heat damage of the laser to the treated area can be avoided, the treatment efficiency can be improved, and the pain of a patient can be reduced.

2. The scattering effect of light in the utility model is determined by the position of the light-emitting end of the optical fiber at the pipe cap, the shape of the pipe cap and the granularity of light scattering particles; to achieve specific scattering effect, light scattering particles of different particle sizes can be mixed and used

3. The utility model is provided with the pipe cap which is sleeved at the light-emitting end of the optical fiber, the pipe cap can use a prefabricated component, a cavity is arranged in the pipe cap, the process is simple, and the manufacturing is convenient.

4. The light scattering particles adopt fused quartz powder or glass powder, so that uniform scattering of laser can be realized; the particle size of the light scattering particles can be selected according to the size of the cap; preferably fused quartz powder, the quartz powder has better heat dissipation effect and lower cost.

Drawings

FIG. 1 is a schematic cross-sectional view of a first embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a second embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an ellipsoidal scattered light according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a spherical scattered light according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a concave scattered light according to an embodiment of the present utility model;

reference numerals illustrate:

1-optical fiber, 2-tube cap, 3-light scattering particle.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings and specific examples:

example 1

The utility model relates to a medical scattering optical fiber head, which comprises light scattering particles 3 and a pipe cap 2 arranged at the light-emitting end of an optical fiber 1, as shown in figure 1, wherein the pipe cap 2 comprises a cylindrical shell, a cavity is arranged in the cylindrical shell, and one end of the cylindrical shell is an open end and is used for being sleeved at the light-emitting end of the optical fiber 1 and connected with the optical fiber 1 in a sealing way; the outline of the end part of the other end is arc-shaped, so that the scratch of target tissues in use can be avoided; the light scattering particles 3 in the embodiment select fused quartz powder, the cavity of the tube cap 2 is filled with the fused quartz powder which can scatter laser, the fused quartz powder can be regular or irregular particles, the end and the side surface of the cylindrical tube cap 2 scatter laser, the laser irradiates to a treated area which is difficult to reach by the light emitting end of the optical fiber 1, and the larger irradiation area and the lower irradiation power density can avoid heat damage of the laser to the treated area, and simultaneously can improve the treatment efficiency; in this example, the length of the cylindrical shell is 8-20mm, and the granularity of the fused silica powder is 800 mesh.

In the use process, the far end of the optical fiber 1 is connected with the laser equipment, the near end is connected with the scattering optical fiber head in a sealing way, the scattering optical fiber head is inserted into the protection device to reach the treatment part, the laser equipment is opened, the required power is adjusted, and the affected part can be irradiated.

As shown in fig. 3 to 5, the light emitting end of the optical fiber 1 can be arranged at different positions in the tube cap 2, so that scattered light with different light distribution is formed in each direction to adapt to the requirements of different treatment positions. In fig. 3, the light emitting end of the optical fiber 1 is arranged at a position close to the arc-shaped end of the pipe cap 2, so that the scattered optical fiber hair is similar to ellipsoidal light, and the intensity of the scattered light of the arc-shaped end of the pipe cap 2 is higher, so that the optical fiber is suitable for killing infectious bacteria in the oral cavity; in fig. 4, the light emitting end of the optical fiber 1 is arranged on one side of the light emitting end far away from the arc-shaped end part of the tube cap 2 shown in fig. 3, so that the scattered optical fiber hair emits light like a sphere, the scattered intensity of the light irradiated on the periphery of the tube cap 2 and the arc-shaped end part is uniform, and the device is suitable for killing infectious bacteria in the stomach; in fig. 5, the light emitting end of the optical fiber 1 is disposed on the side of the light emitting end far away from the arc end of the cap 2 shown in fig. 4, at this time, the side scattered light intensity of the cap 2 is higher, the intensity of the arc end is lower, the three-dimensional distribution of the scattered light is like a doughnut-shaped distribution, and the scattered light is formed to be concave along the light emitting direction of the optical fiber 1, which is suitable for killing infectious bacteria in the intestinal tract.

Example two

The utility model relates to a medical scattering optical fiber head, which comprises light scattering particles 3 and a pipe cap 2 arranged at the light-emitting end of an optical fiber 1, as shown in figure 2, wherein the pipe cap 2 comprises a spherical shell, a cavity is arranged in the spherical shell, an epitaxial connecting port is arranged on the spherical shell, and the epitaxial connecting port is used for being sleeved at the light-emitting end of the optical fiber 1 and is connected with the optical fiber 1 in a sealing way; the light scattering particles 3 in the embodiment are fused quartz powder, the cavity of the pipe cap 2 is filled with the fused quartz powder which can scatter laser, the fused quartz powder can be regular or irregular granular, and the surface of the spherical shell can form scattered light uniformly in different directions; in this example, the inner diameter of the cap 2 of the spherical shell is 0.7-1.5mm, and the granularity of the fused silica powder is 1000 meshes.

The method of use is the same as in example one; according to the position of the optical fiber 1 in the spherical shell, scattered light with different shapes can be formed, so that the scattered light intensity around the tube cap 2 is weak to adapt to the treatment requirements of different parts.

Example III

A medical scattering optical fiber head was the same as the structure of the first or second embodiment except that the particle size of the fused silica powder was 100 mesh.

Example IV

A medical scattering optical fiber head has the same structure as the first or second embodiment except that the particle size of the fused silica powder is 500 mesh.

Example five

A medical scattering optical fiber head has the same structure as the first or second embodiment except that the particle size of the fused silica powder is 700 mesh.

Example six

A medical scattering optical fiber head is the same as the structure of the first or second embodiment except that the particle size of the fused silica powder is 1100 mesh.

Example seven

A medical scattering optical fiber head has the same structure as the first or second embodiment except that the particle size of the fused silica powder is 1500 mesh.

Example eight

A medical scattering optical fiber head has the same structure as the first or second embodiment except that the particle size of the fused silica powder is 2000 mesh.

In the utility model, the usable granularity of the fused quartz powder is 100-2000 meshes, the larger the granularity value is, the smaller the size of scattering particles is, the more scattering times of laser among the light scattering particles 3 are, so that the better the scattering uniformity is, but the more light energy loss is caused, the lower the scattering efficiency is; the scattering efficiency can directly influence the power of the laser; at the same time, the higher the power, the less sterilization time is required.

When the granularity of the light scattering particles 3 is smaller than 100 meshes, the scattering times of laser among the light scattering particles 3 are less, the scattering uniformity is poor, so that spots with higher intensity are formed at certain positions, under the same irradiation time, the treatment effect is realized at the positions with stronger scattered light, the sterilization of the positions with weaker scattered light is incomplete, the sterilization time is prolonged, and the undesired laser thermal damage is possibly caused at the positions with stronger scattered light; when the granularity of the light scattering particles 3 is larger than 2000 meshes, the scattering times of light among the light scattering particles 3 are more, and the scattering uniformity is better, but the absorption of the scattering particles to laser can cause the scattering optical fiber head to generate heat, so that the local temperature is too high, the scattering optical fiber head can be damaged, and the thermal damage to human tissues contacted with the scattering optical fiber head is also possible.

When the size of the pipe cap 2 is larger, the light scattering particles 3 with small granularity, namely larger size, can enable scattered light to have higher uniformity, when the size of the pipe cap 2 is smaller, the light scattering particles 3 with high granularity are required to realize the uniformity of scattered light, and when the scattering particles with higher granularity use higher laser power, the scattering optical fiber head can absorb laser to generate higher temperature, and the particle size of the light scattering particles 3 can meet the requirement when the particle size of the light scattering particles 3 is between 100 meshes and 2000 meshes, in the utility model, in practical use, the particle size of the light scattering particles 3 is selected according to the sizes of the optical fiber 1 and the pipe cap 2; the utility model preferably selects the fused quartz powder with 700 meshes to 1100 meshes, and has smaller influence on the uniformity of scattered light when the size of the pipe cap 2 is changed greatly, wherein the fused quartz powder with 800 meshes to 1000 meshes is used, has higher adaptability to the size of the pipe cap 2, and can adapt to a wider laser power range.

In other embodiments of the utility model, light scattering particles 3 of different particle sizes may also be mixed in order to achieve a specific scattering effect.

In other embodiments of the present utility model, the cap 2 may take other shapes or configurations than those of the first and second embodiments to achieve a specific scattering effect.

In other embodiments of the present utility model, the light scattering particles 3 may be made of other materials, such as glass powder or other powdery materials that can withstand laser irradiation and are transparent to the laser wavelength, and have the same particle size as that of the fused silica powder, and the structure and use method are the same as those of the first embodiment or the second embodiment.

The utility model not only can carry out photodynamic therapy on bacterial infection diseases, but also can carry out disease diagnosis in certain diseases, and even realizes diagnosis and treatment integration.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made without departing from the spirit and scope of the utility model.

Claims (7)

1. A medical scattering optical fiber head, characterized in that:

comprises a pipe cap (2) and light scattering particles (3);

the inside of the pipe cap (2) is provided with a cavity, the pipe cap (2) is provided with an opening, and the opening is used for being connected with the light emitting end of the optical fiber (1);

the light scattering particles (3) are filled in the cavity of the pipe cap (2).

2. A medical scattering optical fiber head as defined in claim 1, wherein: the pipe cap (2) comprises a cylindrical shell, wherein one end of the cylindrical shell is an open end and is used for being sleeved at the light emitting end of the optical fiber (1); the end profile of the other end is arc-shaped.

3. A medical scattering optical fiber head as defined in claim 1, wherein: the pipe cap (2) comprises a spherical shell, and an outwards extending connecting port is arranged on the spherical shell and is used for being sleeved at the light emitting end of the optical fiber (1).

4. A medical scattering optical fibre head as claimed in any one of claims 1 to 3, wherein: the light scattering particles (3) are fused quartz powder or glass powder, and the granularity of the fused quartz powder and the granularity of the glass powder are respectively 100-2000 meshes.

5. A medical scattering fiber optic head as defined in claim 4, wherein: the granularity of the fused quartz powder and the glass powder is 700-1100 meshes.

6. A medical scattering fiber optic head as defined in claim 5, wherein: the granularity of the fused quartz powder and the glass powder is 800-1000 meshes.

7. A medical scattering fiber optic head as defined in claim 6, wherein: the pipe cap (2) is connected with the light emitting end of the optical fiber (1) in a sealing way.

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