Female cervix and vagina cannula for photodynamic therapy

Abstract

The utility model discloses a female cervix and vagina cannula for photodynamic therapy, which comprises a transparent columnar cannula body, the top end of the cannula body is sealed, the tail end of the cannula body is provided with an insertion port for inserting a light beam light source, and the side surface of the cannula body is provided with a transparent isolation plate integrated with the cannula body. A tube cavity used for inserting an optical fiber light source is formed between the isolation plate and the tube body, the top end of the tube body is provided with a penetrating-out hole communicated with the tube cavity, and the tail portion of the tube body is provided with a penetrating-in hole communicated with the tube cavity. According to the female cervix and vagina cannula for photodynamic therapy, two different types of light sources can be inserted at the same time, the treatment time is shortened, and the pain feeling time of a patient is shortened at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, and particularly relates to a female cervical and vaginal cannula for photodynamic therapy. Background Art

[0002] Photodynamic therapy (PDT) is a new method for treating tumors, precancerous lesions, proliferative skin diseases, and vascular diseases with photosensitizing drugs and laser activation. By irradiating the lesion site with a specific wavelength, the photosensitizing drug selectively aggregated in the lesion tissue can be activated, triggering a photochemical reaction to destroy the lesion. In the new generation of photodynamic therapy (PDT), the photosensitizing drug transfers energy to the surrounding oxygen to generate highly reactive singlet oxygen. Singlet oxygen can undergo an oxidation reaction with nearby biological macromolecules, producing cytotoxicity and killing diseased cells. Compared with traditional therapies, the advantage of PDT is that it can perform precise and effective treatment, and the side effects of this therapy are also very small.

[0003] In female cervical and vaginal photodynamic therapy, it is required that after the vaginal dilator opens the vagina, a light source with a cannula is placed into the vagina, and the light source irradiates the lesion site for 20 minutes to achieve the photodynamic treatment effect. There are two common light sources. One is a light column light source, which is used for vaginal and cervical irradiation treatment, and the cannula is a polyetherimide tube with a diameter of 3 cm and a length of 18 cm; the second is an optical fiber light source, which is used for cervical os and fornix irradiation treatment, and the cannula is a polyvinyl chloride suction tube with a diameter of 0.35 cm and a length of 26 cm.

[0004] The disadvantages of traditional cannulas are as follows: 1. Extended treatment time: Lesions often appear simultaneously in the recesses or fornices of the cervical vagina and the cervical os. For treatment, two light sources are required. To ensure the treatment effect, the traditional method requires sequential irradiation, and the irradiation time is extended to 40 minutes. Due to the photosensitive reaction during the irradiation process, pain will occur, so after increasing the irradiation time, the pain time of the patient also increases. 2. Difficult placement position: After inserting the optical fiber into the traditional cannula, it needs to be fixed at the lesion position for irradiation. Due to the different lesion positions, the optical fiber cannula with a cannula needs to be inserted into the cervical os or fornix. Due to large individual differences and the very thin optical fiber cannula, it is difficult to insert into some positions, and auxiliary tools such as cotton swabs are required to reach the lesion site. 3. Difficult fixation: The traditional fixation method is to fix the optical fiber catheter on the vaginal dilator outside the vagina. The lesion position inside the vaginal cervix cannot be fixed. When the patient has pain or makes a slight change in body position, the optical fiber catheter will also shift, thus affecting the treatment effect. Therefore, during the treatment, the staff needs to continuously observe whether the irradiation position changes to ensure the treatment effect is achieved. 4. Pain caused by the vaginal dilator: During the treatment, the treatment site is relatively concealed, and the optical fiber catheter is also fixed on the vaginal dilator. Coupled with the need to continuously observe whether the treatment position changes, the vaginal dilator remains open during the treatment, increasing the pain level of the patient. Content of the Utility Model

[0005] 1. Technical problem to be solved:

[0006] In view of the above technical problems, the present utility model provides a female cervical and vaginal cannula for photodynamic therapy.

[0007] 2. Technical solution:

[0008] A female cervical and vaginal cannula for photodynamic therapy, the cannula includes a transparent cylindrical tube body, the top end of the tube body is sealed, the tail end of the tube body is provided with an insertion interface for inserting a light column light source, and the side surface of the tube body is provided with a transparent isolation plate integrated with the tube body. A tube cavity for inserting an optical fiber light source is formed between the isolation plate and the tube body. The top end of the tube body is provided with a through hole communicating with the tube cavity, and the tail of the tube body is provided with a through hole communicating with the tube cavity.

[0009] Further, the outer diameter of the tube body is 3 cm and the length is 18 cm.

[0010] Further, the inner diameter of the tube cavity is 0.35 cm.

[0011] Further, the top end of the tube body is a hemispherical smooth surface.

[0012] Further, both the tube body and the isolation plate are made of polyetherimide.

[0013] Further, a first fixing ring is fixedly sleeved on the outer side of the tube body. The first fixing ring is connected to a second fixing ring through a plurality of support plates. There is a gap between the first fixing ring and the second fixing ring. An annular airbag is provided on the outer side of the second fixing ring. The airbag is connected to a ball valve inflation ball through a conduit.

[0014] Preferably, the first fixing ring, the second fixing ring and the support plates are of an integral structure and are made of transparent polyetherimide.

[0015] Preferably, the airbag is made of transparent medical rubber.

[0016] 3. Beneficial effects:

[0017] The female cervical and vaginal cannula for photodynamic therapy of the present utility model can insert two different types of light sources at the same time, reducing the treatment time and the pain time felt by the patient. Among them, the light column light source is inserted from the insertion interface at the tail end of the tube body and acts on the vagina and cervix for irradiation treatment. The optical fiber light source is inserted from the tube cavity and exits from the through hole at the front end of the tube body, acting on the cervical os and the fornix for irradiation treatment. The combined use of the two light sources can achieve better treatment effects. In addition, fixation is performed through the airbag on the outer side of the tube body, and the tightness can be adjusted to reduce the pain of the patient. The cannula is a disposable sterile product to ensure the safety of patient use. Description of the drawings

[0018] Figure 1 Schematic diagram of the external structure of the female cervical and vaginal cannula for photodynamic therapy of the present utility model;

[0019] Figure 2 Cross-sectional view of the female cervical and vaginal cannula for photodynamic therapy of the present utility model;

[0020] Figure 3 Schematic diagram of the connection structure of the first fixing ring, the second fixing ring, the support plate and the airbag of the present utility model. Detailed implementation manners

[0021] The present utility model will be specifically described below with reference to the accompanying drawings.

[0022] As shown in the attached Figure 1 to the attached Figure 3 ,

[0023] Embodiment 1:

[0024] A female cervical and vaginal cannula for photodynamic therapy, the cannula includes a transparent cylindrical tube body 1, the outer diameter of the tube body 1 is 3 cm, and the length is 18 cm. The top end of the tube body 1 is sealed, and the top end is a hemispherical smooth surface. An insertion port 3 for inserting a light column light source 2 is provided at the tail end of the tube body 1. A transparent isolation plate 4 integrated with the tube body 1 is provided on the side of the tube body 1. A tube cavity 5 for inserting an optical fiber light source is formed between the isolation plate 4 and the tube body 1, and the inner diameter of the tube cavity 5 is 0.35 cm. Since the inner diameter of the tube cavity 5 is very small, the tube cavity 5 can be inside the tube body 1 without affecting the insertion of the light column light source 2. A through hole 6 communicating with the tube cavity 5 is provided at the top end of the tube body 1, and a penetration hole 7 communicating with the tube cavity 5 is provided at the tail of the tube body 1. Both the tube body 1 and the isolation plate 4 are made of polyetherimide material.

[0025] During the actual operation process, first insert the tube body 1 into the patient's vagina, insert the light column light source 2 from the insertion port 3, the light column light source 2 irradiates the vagina and the cervix, and then the doctor inserts the optical fiber light source into the tube cavity 5 from the penetration hole 7 and passes through the through hole 6 to the cervix and the fornix for irradiation. The two light sources can be used simultaneously, thereby shortening the treatment time. Since the photosensitization reaction during the light irradiation process will cause pain, the pain time of the patient during treatment can be reduced. Setting the tube cavity 5 on the thicker tube body 1 can facilitate the adjustment of the action position of the optical fiber light source. It should be noted that only one end of the optical fiber light source extending out of the through hole 6 emits light.

[0026] Embodiment 2:

[0027] A first fixing ring 8 is fixedly sleeved on the outer side of the tube body 1. The first fixing ring 8 is connected to a second fixing ring 10 through a plurality of support plates 9. A gap is provided between the first fixing ring 8 and the second fixing ring 10. An annular airbag 11 is provided on the outer side of the second fixing ring 10. The airbag 11 is connected to a ball valve inflation ball 13 through a conduit 12. By inflating the airbag 11, the airbag can be inflated to support against the inner wall of the vagina, for fixing the tube body 1, ensuring that the position of the fiber optic light source irradiation will not deviate due to the movement of the tube body 1, and also avoiding the situation that the fiber optic light source needs to be fixed on the vaginal dilator when used alone, reducing the pain of the patient.

[0028] Preferably, the first fixing ring 8, the second fixing ring 10 and the support plates 9 are of an integral structure, and the material is transparent polyetherimide. Preferably, the airbag 11 is made of transparent medical rubber material. The transparent material can transmit light and reduce the light shielding of the light column light source 2.

[0029] Although the present utility model has been disclosed above with preferred embodiments, they are not used to limit the present utility model. Any person skilled in this art can make various changes or modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the protection scope of the claims of this application.

Claims

1. A female cervical vaginal cannula for photodynamic therapy, characterized in that: The sleeve includes a transparent columnar tube body, the top end of the tube body is sealed, the tail end of the tube body is provided with an insertion port for inserting a light column light source, the side of the tube body is provided with a transparent isolation plate integrated with the tube body, a tube cavity for inserting an optical fiber light source is formed between the isolation plate and the tube body, the top end of the tube body is provided with an exit hole connected to the tube cavity, and the tail end of the tube body is provided with an entry hole connected to the tube cavity.

2. A female cervical vaginal cannula for photodynamic therapy according to claim 1, characterized in that: The outer diameter of the tube is 3 cm and the length is 18 cm.

3. A female cervical vaginal cannula for photodynamic therapy according to claim 2, characterized in that: The inner diameter of the lumen is 0.35 cm.

4. A female cervical vaginal cannula for photodynamic therapy according to any one of claims 1 to 3, characterized in that: The top end of the tube body is a hemispherical smooth surface.

5. A female cervical vaginal cannula for photodynamic therapy according to claim 4, characterized in that: The tube body and the isolation plate are both made of polyetherimide.

6. The female cervical vaginal cannula for photodynamic therapy according to claim 1, characterized in that: A first fixing ring is fixedly sleeved on the outer side of the tube body, the first fixing ring is connected to a second fixing ring through a plurality of support plates, a gap is provided between the first fixing ring and the second fixing ring, an annular airbag is provided on the outer side of the second fixing ring, and the airbag is connected to the ball valve inflation ball through a catheter.

7. A female cervical vaginal cannula for photodynamic therapy according to claim 6, characterized in that: The first fixing ring, the second fixing ring and the supporting plate are an integrated structure, and the material is transparent polyetherimide.

8. A female cervical vaginal cannula for photodynamic therapy according to claim 7, characterized in that: The airbag is made of transparent medical rubber material.

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