A photodynamic therapy device

Abstract

The utility model discloses a kind of photodynamic therapy devices, belong to medical instrument technical field, comprising: installation bin, the hole of avoidance is opened on opposite two side walls;Lamp stick, including the connecting portion being set in installation bin and the light-emitting portion being set on connecting portion, light-emitting portion extends to installation bin outside;Battery, set in installation bin, and electrically connected with lamp stick;Light-transmitting protection tube, with installation bin detachably connected, and set on the outside of light-emitting portion;Locking assembly, including the fixed ring being set on the inner wall of installation bin, the two avoidance grooves being opened on the opposite side wall of fixed ring and the two elastic clamping portions being set on light-transmitting protection tube, two elastic clamping portions can pass through two avoidance grooves and rotate along the circumference of installation bin under the drive of external force to be respectively clamped into two avoidance holes, realize the double locking between light-transmitting protection tube and installation bin, overcome the defect that light-transmitting protection tube and installation bin between single locking mode are easily accidentally unlocked.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a photodynamic therapy device. Background Technology

[0002] Vulvovaginal candidiasis is a highly prevalent and representative disease in gynecological clinics. Due to the unique structure of the female reproductive tract, pathogens often reside deep within the mucosal folds, making it difficult for traditional local drug delivery methods to effectively penetrate the core area of ​​the lesion. In recent years, photodynamic therapy has been gradually introduced into the treatment of this disease. Existing photodynamic therapy devices typically adopt an integrated structural design, encapsulating precision electronic components such as light-emitting elements, power batteries, and control circuits within a handle or main unit. The front end is connected to a light-transmitting protective tube that can be inserted into the vagina. During treatment, the light-transmitting protective tube is inserted into the body, and the light source is activated to irradiate and activate the photosensitizer, generating active substances such as singlet oxygen to kill Candida. Because the treatment environment involves a large amount of secretions, drug mucus, and rinsing fluid, the device must undergo a strict cleaning and disinfection process after each use to prevent cross-infection.

[0003] Because the electronic components and the light-transmitting protective tube are integrated into a single package, the device cannot be deeply immersed for disinfection or washed over a large area. During cleaning, liquid can easily seep into the interior through gaps in the outer shell, causing short circuits in the electronic circuitry or overall device malfunction. To overcome this defect, some improved solutions design the light-transmitting protective tube and the storage compartment as a detachable, separate structure that can be separated for cleaning after use. However, most existing detachable structures use a single unlocking method. During use, users may accidentally trigger the unlocking device when adjusting their grip, changing their body position, or touching other instruments. This can cause the light-transmitting protective tube to accidentally detach from the storage compartment while inside the body or during removal, resulting in damage to the device and posing a serious medical safety hazard to patients. Utility Model Content

[0004] The purpose of this invention is to propose a photodynamic therapy device that addresses the problem that existing detachable structures are easily triggered by accidents, leading to the loosening of the light-transmitting protective tube and posing a medical safety hazard.

[0005] This utility model provides a photodynamic therapy device, comprising: The installation compartment has clearance holes on its two opposite side walls; The light stick includes a connecting portion disposed within the mounting chamber and a light-emitting portion disposed on the connecting portion, the light-emitting portion extending outside the mounting chamber; The battery is located inside the mounting compartment and is electrically connected to the lamp rod; A light-transmitting protective tube is detachably connected to the mounting chamber and is sleeved on the outside of the light-emitting part; The locking assembly includes a fixing ring disposed on the inner wall of the mounting chamber, two clearance grooves formed on the opposite sidewalls of the fixing ring, and two elastic locking parts disposed on the light-transmitting protective tube. The two elastic locking parts can pass through the two clearance grooves and rotate around the circumference of the mounting chamber under the drive of external force to respectively lock into the two clearance holes.

[0006] Preferably, the locking assembly further includes a connecting seat disposed on the light-transmitting protective tube, the connecting seat being insertable into the installation chamber, and the elastic locking part including a connecting post disposed on the connecting seat, a locking block disposed on the connecting post, a groove formed on the locking block, an elastic element disposed in the groove, and a push head slidably connected to the groove, the push head being connected to the elastic element.

[0007] Preferably, the elastic element is a spring, and the push head has two opposite ends, wherein the end connected to the spring is the connecting end, and the other end away from the spring is the push end, and the push end is hemispherical.

[0008] Preferably, the orthographic projection width of the locking block along the vertical direction is greater than the orthographic projection width of the connecting column along the vertical direction, and with the midpoint of the connecting seat as the center, the area of ​​the distribution circle where the connecting column is located is smaller than the area of ​​the distribution circle where the locking block is located.

[0009] Preferably, a blocking ring is formed on the connecting seat, and an insertion groove adapted to the opening of the mounting compartment is formed on the bottom surface of the blocking ring.

[0010] Preferably, a sealing ring is provided in the insertion groove. The sealing ring has a horizontal portion and a vertical portion extending outward from the horizontal portion. The horizontal portion is located between the bottom surface of the insertion groove and the top surface of the mounting chamber, and the vertical portion is located between the inner wall of the mounting chamber and the outer wall of the connecting seat.

[0011] Preferably, the connecting seat and the light-transmitting protective tube are integrally formed.

[0012] Preferably, the bottom of the installation compartment has a charging port that is electrically connected to the battery, and a protective plug is provided at the charging port.

[0013] Preferably, the installation chamber is further provided with a vibrator, which is electrically connected to the battery.

[0014] Preferably, a power switch, a light-emitting switch, and a vibration switch are sequentially arranged on the side wall of the installation compartment. The power switch is electrically connected to the battery, the light-emitting switch is electrically connected to the lamp rod, and the vibration switch is electrically connected to the vibrator.

[0015] Compared with existing technologies, it has the following beneficial effects: This invention provides a photodynamic therapy device. By setting a fixing ring inside the installation chamber and opening clearance grooves on the opposite sidewalls of the fixing ring, two elastic locking parts located on the light-transmitting protective tube are driven to pass through the corresponding clearance grooves and rotate around the circumference of the installation chamber. This causes the two elastic locking parts to respectively engage with the corresponding clearance holes on the sidewalls of the installation chamber, achieving a double locking between the light-transmitting protective tube and the installation chamber. This overcomes the defect that the light-transmitting protective tube and the installation chamber are easily unlocked due to a single locking method, reducing the risk of accidental loosening caused by adjustments in holding posture, changes in body position, or contact with the device during use. At the same time, the detachable structure of the light-transmitting protective tube and the installation chamber allows the light-transmitting protective tube to be separated separately for deep soaking disinfection or large-area washing after use, eliminating the hidden danger of cleaning liquid seeping into the installation chamber and damaging electronic components. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a photodynamic therapy device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the lamp rod and mounting chamber structure of a photodynamic therapy device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the light-transmitting protective tube and connecting seat structure of a photodynamic therapy device according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the elastic locking portion of a photodynamic therapy device according to an embodiment of the present invention; Figure 5 for Figure 2 Enlarged view of point A in the middle; Figure 6 This is a cross-sectional view showing the connection relationship between the insertion slot, sealing ring, and mounting chamber of a photodynamic therapy device according to an embodiment of the present invention.

[0018] In the diagram, 1. Installation compartment; 11. Clearance hole; 12. Charging port; 13. Protective plug; 14. Power switch; 15. Illumination button; 16. Vibration button; 2. Lamp rod; 21. Connecting part; 22. Illuminating part; 3. Light-transmitting protective tube; 4. Locking assembly; 41. Fixing ring; 42. Clearance groove; 43. Elastic snap-fit ​​part; 431. Connecting post; 432. Locking block; 433. Groove; 434. Elastic element; 435. Push head; 44. Connecting seat; 441. Blocking ring; 442. Insertion groove; 5. Sealing ring. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] like Figure 1 , Figure 2 and Figure 4 As shown, this utility model provides a photodynamic therapy device, including: a mounting chamber 1, a lamp rod 2, a battery, a light-transmitting protective tube 3, and a locking assembly 4. The mounting chamber 1 has clearance holes 11 on its two opposite side walls. The lamp rod 2 includes a connecting part 21 disposed within the mounting chamber 1 and a light-emitting part 22 disposed on the connecting part 21, with the light-emitting part 22 extending outside the mounting chamber 1. The battery is disposed within the mounting chamber 1 and electrically connected to the lamp rod 2. The light-transmitting protective tube 3 is detachably connected to the mounting chamber 1 and is sleeved on the outside of the light-emitting part 22. The locking assembly 4 includes a fixing ring 41 disposed on the inner wall of the mounting chamber 1, two clearance grooves 42 disposed on the opposite side walls of the fixing ring 41, and two elastic locking parts 43 disposed on the light-transmitting protective tube 3. The two elastic locking parts 43 can pass through the two clearance grooves 42 and rotate circumferentially along the mounting chamber 1 under external force to respectively engage with the two clearance holes 11.

[0021] According to the embodiment of this utility model, the photodynamic therapy device in this application is used for the treatment of vulvovaginal candidiasis. A separate, detachable structure allows for individual cleaning and disinfection of the light-transmitting protective tube 3. A double-locking structure of the locking component 4 prevents accidental loosening of the light-transmitting protective tube 3 during use. When assembling the light-transmitting protective tube 3 with the mounting chamber 1, the operator aligns the two elastic locking parts 43 on the light-transmitting protective tube 3 with the two clearance grooves 42 on the fixing ring 41, and then pushes the light-transmitting protective tube 3 axially into the mounting chamber 1, allowing the elastic locking parts 43 to pass through the clearance grooves 42 and over the fixing ring 41. At this time, the operator rotates the light-transmitting protective tube 3 circumferentially along the mounting chamber 1, causing the elastic locking parts 43 to rotate synchronously, gradually moving the elastic locking parts 43 from the position of the clearance grooves 42 until the elastic locking parts 43 move to the position on the mounting chamber 1. At the clearance hole 11, the elastic locking part 43 is driven by the elastic force to lock into the clearance hole 11, and the elastic locking part 43 and the clearance hole 11 form a locking engagement, fixing the light-transmitting protective tube 3 in the current position on the installation chamber 1. During treatment, since the light-transmitting protective tube 3 is locked in the current position, any axial pulling force cannot directly dislodge the elastic locking part 43 from the clearance hole 11. The light-transmitting protective tube 3 must first be rotated at a certain angle, and the elastic locking part 43 must be realigned with the clearance groove 42 before the light-transmitting protective tube 3 can be pulled out axially. This operation requires the operator to consciously apply a circumferential rotation to the light-transmitting protective tube 3. The locking state cannot be released by pulling or pressing alone, thus eliminating the hidden danger of accidental unlocking and separation of the light-transmitting protective tube 3 and the installation chamber 1 due to adjustment of the holding posture, change of body position, or contact with other instruments.

[0022] The following detailed description uses specific examples: like Figure 3 and Figure 5 As shown, in some embodiments, the locking assembly 4 further includes a connecting seat 44 disposed on the light-transmitting protective tube 3. The connecting seat 44 can be inserted into the installation chamber 1. The elastic locking part 43 includes a connecting post 431 disposed on the connecting seat 44, a locking block 432 disposed on the connecting post 431, a groove 433 formed in the locking block 432, an elastic element 434 disposed in the groove 433, and a pushing head 435 slidably connected to the groove 433. The pushing head 435 is connected to the elastic element 434. The elastic element 434 is a spring, and the pushing head 435 has two opposing ends, wherein the end connected to the spring is the connecting end, and the other end away from the spring is the pushing end, which is hemispherical.

[0023] When installing the light-transmitting protective tube 3 onto the mounting chamber 1, the operator aligns the connecting seat 44 on the light-transmitting protective tube 3 with the mounting chamber 1, inserting the connecting seat 44 and the elastic locking part 43 axially into the mounting chamber 1. When the connecting seat 44 is pushed into place, the locking block 432 on the elastic locking part 43 passes through the clearance groove 42 on the fixing ring 41 and crosses the fixing ring 41. At this time, the operator rotates the light-transmitting protective tube 3 circumferentially, and the locking block 432 rotates synchronously along the lower surface of the fixing ring 41 until the locking block 432 rotates to the clearance hole 11 on the side wall of the mounting chamber 1. At this time, the pushing head 435... Under the action of the spring force, the push head 435 extends outward from the clearance hole 11, and a snap-fit ​​engagement is formed between the push head 435 and the clearance hole 11. As the spring continuously applies a pushing force to the push head 435, the push head 435 drives the locking block 432 to remain in the current position and cannot rotate back to the clearance groove 42 on its own. When the hemispherical push head 435 moves to the position of the clearance hole 11, it can extend outward from the clearance hole 11 more smoothly. Moreover, the contact area between the hemispherical push head 435 and the inner wall of the mounting chamber 1 is small, which reduces the frictional resistance during the rotation process and makes the light-transmitting protective tube 3 rotate more smoothly.

[0024] like Figure 6 As shown, in some embodiments, the vertical projection width of the locking block 432 is greater than the vertical projection width of the connecting post 431, and the area of ​​the distribution circle containing the connecting post 431 with the midpoint of the connecting seat 44 as the center is smaller than the area of ​​the distribution circle containing the locking block 432. A blocking ring 441 is formed on the connecting seat 44, and an insertion groove 442 adapted to the opening of the mounting chamber 1 is opened on the bottom surface of the blocking ring 441. A sealing ring 5 is provided in the insertion groove 442. The sealing ring 5 has a horizontal part and a vertical part extending outward from the horizontal part. The horizontal part is located between the bottom surface of the insertion groove 442 and the top surface of the mounting chamber 1, and the vertical part is located between the inner wall of the mounting chamber 1 and the outer wall of the connecting seat 44. The connecting seat 44 and the light-transmitting protective tube 3 are integrally formed.

[0025] The locking block 432 is located at the lower part of the connecting post 431 and forms an outward protruding structure relative to the connecting post 431. When the locking block 432 passes through the relief groove 42 on the fixing ring 41 and rotates circumferentially, the protruding structure on the locking block 432 will contact the lower surface of the fixing ring 41 to form a snap-fit. The distribution circle area where the connecting post 431 is located is smaller than the distribution circle area where the locking block 432 is located, ensuring that the connecting post 431 will not interfere with the rotation of the locking block 432 during the rotation process. The connecting post 431 can rotate freely inside the fixing ring 41. When the light-transmitting protective tube 3 is assembled with the mounting chamber 1, the insertion groove 442 of the blocking ring 441 forms a plug-in fit with the opening edge of the mounting chamber 1. The blocking ring 441 covers the outside of the opening of the mounting chamber 1, blocking the side wall opening of the mounting chamber 1 and reducing the risk of secretions or cleaning fluid seeping into the interior of the mounting chamber 1 along the connection gap during use. The horizontal and vertical parts of the sealing ring 5 form elastic seals between the bottom wall of the insertion groove 442 and the top surface of the mounting chamber 1, and between the inner wall of the mounting chamber 1 and the outer wall of the connecting seat 44, respectively. The horizontal and vertical parts of the sealing ring extend the sealing stroke, further preventing external liquids from seeping into the interior of the mounting chamber 1 along the connection gap. The integrally molded connecting seat 44 and the light-transmitting protective tube 3 eliminate any possible connection gaps between the connecting seat 44 and the light-transmitting protective tube 3, avoiding loosening and leakage that may occur due to adhesive or threaded connections, and improving the overall structural integrity and sealing reliability.

[0026] In some embodiments, the bottom of the mounting compartment 1 is provided with a charging port 12 electrically connected to the battery, and a protective plug 13 is provided at the charging port 12. A vibrator is also provided inside the mounting compartment 1, and the vibrator is electrically connected to the battery. A power switch 14, a light-emitting button 15, and a vibration button 16 are sequentially provided on the side wall of the mounting compartment 1. The power switch 14 is electrically connected to the battery, the light-emitting button 15 is electrically connected to the light rod 2, and the vibration button 16 is electrically connected to the vibrator.

[0027] The charging port 12 is used to connect to an external power source to charge the battery inside the installation chamber 1. The protective plug 13 is inserted into the charging port 12 when not charging, forming a physical seal to prevent liquids or secretions from seeping into the charging port 12 during cleaning and disinfection, thus avoiding short circuits or corrosion of the charging contacts. During treatment, the operator can control the vibrator to start, causing the installation chamber 1 and the light-transmitting protective tube 3 to vibrate. The vibration is transmitted to the lesion site through the light-transmitting protective tube 3, helping to evenly spread the applied photosensitizer on the vaginal mucosa surface, improving the contact efficiency between the photosensitizer and the lesion tissue. The physical stimulation of the vibration can also promote local blood circulation, enhancing the effect of photodynamic therapy. The power switch 14 is electrically connected to the power supply and is used to control the power supply of the entire device. The light-emitting button 15 is electrically connected to the lamp rod 2 and can independently control the opening and closing of the lamp rod 2. The vibration button 16 is electrically connected to the vibrator and can independently control the start and stop of the vibrator. The operator can activate the light-emitting button 15 for irradiation alone, or activate the vibration button 16 alone to assist in the spreading of the photosensitizer, or both can be used simultaneously.

[0028] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A photodynamic therapy device, characterized in that, include: The installation compartment (1) has clearance holes (11) on its two opposite side walls. The lamp stick (2) includes a connecting part (21) disposed in the mounting chamber (1) and a light-emitting part (22) disposed on the connecting part (21), the light-emitting part (22) extending outside the mounting chamber (1); The battery is located in the mounting compartment (1) and is electrically connected to the lamp rod (2); The light-transmitting protective tube (3) is detachably connected to the mounting chamber (1) and is sleeved on the outside of the light-emitting part (22); The locking assembly (4) includes a fixing ring (41) disposed on the inner wall of the mounting chamber (1), two clearance grooves (42) opened on the opposite side wall of the fixing ring (41), and two elastic snap-fit ​​parts (43) disposed on the light-transmitting protective tube (3). The two elastic snap-fit ​​parts (43) can pass through the two clearance grooves (42) and rotate around the circumference of the mounting chamber (1) under the drive of external force to respectively snap into the two clearance holes (11).

2. The photodynamic therapy device according to claim 1, characterized in that, The locking assembly (4) further includes a connecting seat (44) disposed on the light-transmitting protective tube (3), the connecting seat (44) being insertable into the installation chamber (1), the elastic snap-fit ​​part (43) including a connecting post (431) disposed on the connecting seat (44), a locking block (432) disposed on the connecting post (431), a groove (433) opened on the locking block (432), an elastic element (434) disposed in the groove (433), and a push head (435) slidably connected to the groove (433), the push head (435) being connected to the elastic element (434).

3. The photodynamic therapy device according to claim 2, characterized in that, The elastic element (434) is a spring, and the push head (435) has two opposite ends, wherein the end connected to the spring is the connecting end, and the other end away from the spring is the push end, which is hemispherical.

4. The photodynamic therapy device according to claim 2, characterized in that, The vertical projection width of the locking block (432) is greater than the vertical projection width of the connecting column (431), and with the midpoint of the connecting seat (44) as the center, the area of ​​the distribution circle where the connecting column (431) is located is smaller than the area of ​​the distribution circle where the locking block (432) is located.

5. The photodynamic therapy device according to claim 2, characterized in that, A blocking ring (441) is formed on the connecting seat (44), and an insertion groove (442) adapted to the opening of the mounting chamber (1) is provided on the bottom surface of the blocking ring (441).

6. The photodynamic therapy device according to claim 5, characterized in that, A sealing ring (5) is provided in the insertion groove (442). The sealing ring (5) has a horizontal part and a vertical part extending outward from the horizontal part. The horizontal part is located between the bottom surface of the insertion groove (442) and the top surface of the mounting chamber (1). The vertical part is located between the inner wall of the mounting chamber (1) and the outer wall of the connecting seat (44).

7. The photodynamic therapy device according to claim 2, characterized in that, The connecting seat (44) and the light-transmitting protective tube (3) are integrally formed.

8. The photodynamic therapy device according to claim 1, characterized in that, The bottom of the installation compartment (1) is provided with a charging port (12) that is electrically connected to the battery, and a protective plug (13) is provided at the charging port (12).

9. The photodynamic therapy device according to claim 1, characterized in that, The installation compartment (1) is also equipped with a vibrator, which is electrically connected to the battery.

10. A photodynamic therapy device according to claim 9, characterized in that, The installation chamber (1) is provided with a power switch (14), a light-emitting key (15) and a vibration key (16) in sequence on its side wall. The power switch (14) is electrically connected to the battery, the light-emitting key (15) is electrically connected to the lamp rod (2), and the vibration key (16) is electrically connected to the vibrator.

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