Male optical fiber urinary catheter for photodynamic therapy

Abstract

The utility model discloses a male optical fiber urinary catheter for photodynamic therapy, which comprises an optical fiber catheter and a latex sleeve, the rear end of the latex sleeve is provided with a sleeve port, the front end of the latex sleeve is provided with a communicated joint, the joint is fixedly provided with a first external thread sleeve, and the annular surface of the front end of the first external thread sleeve is provided with a plurality of elastic sheets. The first external thread casing pipe is in threaded connection with the sleeve, an arc-shaped inner wall corresponding to the elastic piece is arranged in the sleeve, the radial size of the arc-shaped inner wall is gradually reduced in the direction, away from the first external thread casing pipe, of the elastic piece, and the optical fiber catheter is inserted into the latex sleeve front end connector from the front end opening of the sleeve and then stretches into the latex sleeve. And the optical fiber conduit is pressed and fixed by extruding the elastic sheet through the arc-shaped inner wall of the sleeve. According to the male optical fiber urinary catheter for photodynamic therapy, the optical fiber catheter is extruded and fixed by screwing the elastic pieces on the annular face of the front end of the first external thread sleeve through the sleeve, and the depth of the optical fiber catheter inserted into the urethra can be controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, and particularly relates to a male optical fiber urinary catheter 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 the photodynamic therapy of male urethral condyloma acuminata, it is required to insert the optical fiber catheter into the urethra to a certain depth and maintain it for about 20 minutes to achieve the photodynamic therapy effect. The traditional catheter is a suction tube with a diameter of 3.5 mm. The disadvantage of the traditional catheter is that after being inserted into the urethra, there is no scale mark, but the insertion depth is determined according to the red light of the light source, and the position cannot be fixed. The patient needs to hold the catheter for 20 minutes. During these 20 minutes, the patient is continuously in pain, and the traditional catheter may be inserted deeper or pulled out due to pain or other reasons, thus affecting the treatment effect. Therefore, during the treatment, both the staff and the patient need to continuously observe whether the irradiation position has changed to ensure the treatment effect is achieved. Content of the Utility Model

[0004] 1. Technical problems to be solved:

[0005] In view of the above technical problems, the utility model provides a male optical fiber urinary catheter for photodynamic therapy.

[0006] 2. Technical solutions:

[0007] A male optical fiber urinary catheter for photodynamic therapy includes an optical fiber catheter and a latex sleeve. The rear end of the latex sleeve is provided with a socket, the front end of the latex sleeve is provided with a connected joint, a first external thread sleeve is fixed on the joint, and a plurality of elastic pieces are arranged on the circumferential surface of the front end of the first external thread sleeve. The first external thread sleeve is threadedly connected to a sleeve, and the inner part of the sleeve is provided with an arc-shaped inner wall corresponding to the elastic pieces. Along the direction away from the first external thread sleeve of the elastic pieces, the radial dimension of the arc-shaped inner wall gradually decreases. The optical fiber catheter is inserted into the front-end joint of the latex sleeve through the front-end opening of the sleeve and then extends into the latex sleeve, and the optical fiber catheter is pressed and fixed by the arc-shaped inner wall of the sleeve squeezing the elastic pieces.

[0008] Furthermore, the end of the latex sheath is provided with a protruding elastic band, and a Velcro reinforcement band is provided on the outer side close to the elastic band. Preferably, the length of the Velcro reinforcement band is 15 cm and the width is 1 cm.

[0009] Furthermore, one end of the optical fiber catheter extending into the latex sheath is sealed, and the optical fiber inside it is led out from the end of the optical fiber catheter far away from the latex sheath. The optical fiber catheter is composed of two parts: a transparent section and a light-shielding section. There is no light-shielding coating outside the optical fiber at the position of the transparent section, and there is a light-shielding coating outside the optical fiber at the position of the light-shielding section. The transparent section is close to the latex sheath, and a fixing sleeve is provided outside the position where the transparent section and the light-shielding section meet. A telescopic sleeve is provided on the side of the fixing sleeve close to the sleeve. A flexible light-shielding cover is provided between the telescopic sleeve and the fixing sleeve. A second external thread sleeve is fixed on the outer ring of the telescopic sleeve. The second external thread sleeve is threadedly connected to a rotating ring. A fixed ring is fixedly connected to the outer ring of the sleeve near the bottom. The rotating ring is movably sleeved on the sleeve above the fixed ring, and the fixed ring is rotatably connected to the rotating ring.

[0010] Furthermore, a depth scale is provided on the transparent section of the optical fiber catheter.

[0011] Preferably, the outer diameter of the optical fiber catheter is 3.5 mm, the inner diameter is 2 mm, the length is 26 cm, and the length of the transparent section is 2 cm - 3 cm.

[0012] Preferably, the optical fiber catheter, the first external thread sleeve, and the second external thread sleeve are all made of polyethylene plastic.

[0013] Preferably, the latex sheath, the joint, and the elastic band are of an integral structure, all made of latex material, and the joint is in interference fit with the first external thread sleeve.

[0014] Preferably, the fixing sleeve, the telescopic sleeve, and the light-shielding cover are of an integral structure, all made of elastic latex material, and the telescopic sleeve is in interference fit with the second external thread sleeve.

[0015] 3. Beneficial effects:

[0016] In the male optical fiber urinary catheter for photodynamic therapy of the present utility model, the first external thread sleeve at the front end of the sleeve is tightened, and multiple elastic pieces on the annular surface squeeze and fix the optical fiber catheter, so that the insertion depth of the optical fiber catheter into the urethra can be controlled. The latex sheath is used for fixation, which can free the patient's hands and prevent the optical fiber catheter from being inserted deeper or pulled out due to accidental conditions. In addition, a shielding structure for shielding the red light leaking outside the optical fiber catheter is provided to avoid irritating the eyes. Description of the drawings

[0017] Figure 1 It is a schematic external structure diagram of the male optical fiber urinary catheter for photodynamic therapy of the present utility model;

[0018] Figure 2Cross-sectional view of a male fiber optic urinary catheter for photodynamic therapy. Detailed implementation mode

[0019] The present utility model will be specifically described below with reference to the accompanying drawings.

[0020] As shown in the attached Figure 1 to the attached Figure 2 ,

[0021] Embodiment 1:

[0022] A male fiber optic urinary catheter for photodynamic therapy includes an optical fiber catheter 1 and a latex sleeve 2. A socket 3 is provided at the rear end of the latex sleeve 2, and a connected joint 4 is provided at the front end of the latex sleeve 2. A first external thread sleeve 5 is fixed on the joint 4. A plurality of elastic pieces 6 are provided on the front annular surface of the first external thread sleeve 5. The first external thread sleeve 5 is threadedly connected to a sleeve 7. An arc-shaped inner wall corresponding to the elastic pieces 6 is provided inside the sleeve 7. Along the direction away from the first external thread sleeve 5 of the elastic pieces 6, the radial dimension of the arc-shaped inner wall gradually decreases. As the sleeve 7 is tightened, the arc-shaped inner wall gradually squeezes the elastic pieces 6 towards the center. The optical fiber catheter 1 is inserted into the latex sleeve 2 through the front end opening of the sleeve 7 and then extends into the latex sleeve 2. The optical fiber catheter 1 is fixed tightly by the arc-shaped inner wall of the sleeve 7 squeezing the elastic pieces 6.

[0023] During actual use, first turn the latex sleeve 2 outwards, loosen the sleeve 7 to keep its arc-shaped inner wall from squeezing the elastic pieces 6. Insert the optical fiber catheter 1 into the latex sleeve 2 through the front end opening of the sleeve 7 and then continue to extend it into the latex sleeve 2. The insertion depth is selected according to the patient's illness condition. After insertion, rotate the sleeve 7 to squeeze the elastic pieces 6 to tightly fix the optical fiber catheter 1. Then the patient inserts the optical fiber catheter 1 into the urethra, and then puts the latex sleeve 2 on the penis for fixation, and keeps the light therapy for 20 minutes. It should be noted that according to the actual situation, the optical fiber catheter 1 can also be inserted first and then the latex sleeve 2 is worn. This operation can avoid the pain caused by the movement of the optical fiber catheter 1 in the urethra due to too large an operation amplitude when wearing the latex sleeve 2. In this embodiment, the optical fiber catheter 1 is fixed by rotating the sleeve 7, which can control the insertion depth of the optical fiber catheter 1 and can also adjust the insertion depth after insertion. In addition, fixation is carried out through the latex sleeve 2, which does not require the patient to hold it by hand, leaving the patient's hands free, and can also prevent the patient from inserting the optical fiber catheter 1 deeper or pulling it out.

[0024] Embodiment 2:

[0025] A protruding elastic band 8 is provided at the end of the latex sleeve 2, and a Velcro reinforcement band 9 is provided outside near the elastic band 8. Preferably, the length of the Velcro reinforcement band 9 is 15 cm and the width is 1 cm. The elastic band 8 is relatively thick, which is convenient for turning the latex sleeve 2 outwards and convenient for wearing the latex sleeve 2. The Velcro reinforcement band 9 can be further reinforced to prevent the latex sleeve 2 from slipping off.

[0026] Example 3:

[0027] One end of the optical fiber catheter 1 extending into the latex sleeve 2 is sealed, and the optical fiber inside it is led out from the end of the optical fiber catheter 1 far away from the latex sleeve 2. The optical fiber catheter 1 is composed of two parts: a transparent section and a light-shielding section. There is no light-shielding coating outside the optical fiber at the position of the transparent section, and there is a light-shielding coating outside the optical fiber at the position of the light-shielding section. The transparent section is close to the latex sleeve 2 and needs to be inserted into the urethra. A fixing sleeve 10 is provided outside the position where the transparent section and the light-shielding section meet. A telescopic sleeve 11 is provided on one side of the fixing sleeve 10 close to the sleeve 7. A flexible light-shielding cover 12 is provided between the telescopic sleeve 11 and the fixing sleeve 10. A second external thread sleeve 13 is fixed to the outer ring of the telescopic sleeve 11. The second external thread sleeve 13 is threadedly connected to the rotating ring 14. A retaining ring 15 is fixedly connected to the outer ring of the sleeve 7 near the bottom. The rotating ring 14 is movably sleeved on the sleeve 7 above the retaining ring 15, and the retaining ring is rotatably connected to the rotating ring 14.

[0028] Since a part of the transparent section at the front end of the optical fiber catheter 1 needs to be inserted into the patient's urethra, and another part of the transparent section is exposed outside, it needs to be blocked to avoid irritating the eyes. Therefore, the above structure is set. In this structure, the structure formed by the telescopic sleeve 11, the fixing sleeve 10 and the light-shielding cover 12 can completely block the transparent section exposed outside. Among them, the telescopic sleeve 11 is connected to the sleeve 7, and the sleeve 7 can rotate relative to the rotating ring 14 without interfering with the rotation of the sleeve 7. The rotating ring 14 and the second external thread sleeve 13 outside the telescopic sleeve 11 are threadedly fixed.

[0029] Example 4:

[0030] A depth scale is provided on the transparent section of the optical fiber catheter 1. The insertion depth of the optical fiber catheter 1 can be viewed through the depth scale, which is convenient for operation.

[0031] Example 5:

[0032] The outer diameter of the optical fiber catheter 1 is 3.5 mm, the inner diameter is 2 mm, the length is 26 cm, and the length of the transparent section is 2 cm - 3 cm. The optical fiber catheter 1, the first external thread sleeve 5 and the second external thread sleeve 13 are all made of polyethylene plastic.

[0033] Example 6:

[0034] The latex sleeve 2, the joint 4 and the elastic band 8 are of an integral structure and are all made of latex. The joint 4 is connected to the first external thread sleeve 5 by interference fit. The fixing sleeve 10, the telescopic sleeve 11 and the light-shielding cover 12 are of an integral structure and are all made of elastic latex. The telescopic sleeve 11 is connected to the second external thread sleeve 13 by interference fit.

[0035] Although the present utility model has been disclosed above with the preferred embodiments, they are not intended to limit the present utility model. Any person skilled in the 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 male optical fiber catheter for photodynamic therapy, characterized in that: It includes an optical fiber catheter and a latex sleeve, wherein the rear end of the latex sleeve is provided with a sleeve interface, the front end of the latex sleeve is provided with a connected joint, a first externally threaded sleeve is fixed on the joint, a plurality of elastic sheets are provided on the front end annular surface of the first externally threaded sleeve, the first externally threaded sleeve is threadedly connected to the sleeve, the interior of the sleeve is provided with an arc-shaped inner wall corresponding to the elastic sheet, and the radial dimension of the arc-shaped inner wall gradually decreases along the direction in which the elastic sheet moves away from the first externally threaded sleeve. The optical fiber catheter is inserted into the front end joint of the latex sleeve from the front end opening of the sleeve and then extends into the latex sleeve, and the optical fiber catheter is pressed and fixed by squeezing the elastic sheet through the arc-shaped inner wall of the sleeve.

2. A male optical fiber catheter for photodynamic therapy according to claim 1, characterized in that: A protruding elastic band is arranged at the end of the latex sleeve, and a Velcro reinforcement band is arranged near the outer side of the elastic band.

3. The male optical fiber catheter for photodynamic therapy according to claim 1, characterized in that: The end of the optical fiber conduit extending into the latex sleeve is sealed, and the optical fiber inside the optical fiber conduit is led out from the end of the optical fiber conduit away from the latex sleeve. The optical fiber conduit consists of two parts: a transparent section and a light-shielding section. The outer side of the optical fiber at the transparent section does not have a light-shielding coating layer, and the outer side of the optical fiber at the light-shielding section has a light-shielding coating layer. The transparent section is close to the latex sleeve, and a fixed sleeve is provided on the outer side of the intersection of the transparent section and the light-shielding section. A telescopic sleeve is provided on the side of the fixed sleeve close to the sleeve, and a flexible light-shielding cover is provided between the telescopic sleeve and the fixed sleeve. A second externally threaded sleeve is fixed on the outer ring of the telescopic sleeve, and the second externally threaded sleeve is threadedly connected to a rotating ring. A fixedly connected retaining ring is provided on the outer ring of the sleeve close to the bottom, and the rotating ring is movably sleeved on the sleeve above the retaining ring, and the retaining ring is rotatably connected to the rotating ring.

4. The male optical fiber catheter for photodynamic therapy according to claim 3, characterized in that: The transparent section of the optical fiber catheter is provided with a depth scale.

5. The male optical fiber catheter for photodynamic therapy according to claim 3, characterized in that: The optical fiber catheter has an outer diameter of 3.5 mm, an inner diameter of 2 mm, a length of 26 cm, and a transparent section length of 2 cm-3 cm.

6. The male optical fiber catheter for photodynamic therapy according to claim 3, characterized in that: The optical fiber conduit, the first externally threaded sleeve and the second externally threaded sleeve are all made of polyethylene plastic.

7. The male optical fiber catheter for photodynamic therapy according to claim 2, characterized in that: The latex sleeve, the joint and the elastic band are an integrated structure, all made of latex material, and the joint is connected to the first externally threaded sleeve by interference fit.

8. The male optical fiber catheter for photodynamic therapy according to claim 6, characterized in that: The fixed sleeve, telescopic sleeve and sunshade are an integrated structure, all of which are made of elastic latex. The telescopic sleeve is connected to the second externally threaded sleeve by interference fit.

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