CN215961823U

CN215961823U - Photodynamic therapy optical rod

Info

Publication number: CN215961823U
Application number: CN202121970980.XU
Authority: CN
Inventors: 曾倩雯; 李瑞琦; 毕建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-03-08
Anticipated expiration: 2031-08-20

Abstract

The utility model relates to the technical field of photodynamic therapy, and provides a photodynamic therapy optical wand; the photodynamic therapy light stick of the utility model comprises: the light bar comprises a light bar body, a light-emitting module, a light-transmitting protection tube, a connecting tube and a transparent expansion piece; the light-emitting module is arranged at the front end of the light stick body and extends along the axial direction of the light stick body; the light transmission protection tube is sleeved outside the light emitting module, and two ends of the light transmission protection tube are connected with the light bar body; piston cavities are respectively arranged at two ends of the light-emitting module and extend along the radial direction of the light bar body; the expansion pieces are arranged outside the light-transmitting protection pipe at intervals along the circumferential direction of the light bar body, two ends of each expansion piece are respectively provided with a piston rod, one end of each piston rod is arranged in the piston cavity, and the other end of each piston rod is connected with the expansion piece; one end of the connecting pipe is communicated with each piston cavity, and the other end of the connecting pipe is used for being connected with the photodynamic therapy host. It can expand vagina, reduce the dead zone of therapeutic light and raise the therapeutic effect.

Description

Photodynamic therapy optical rod

Technical Field

The utility model relates to the technical field of photodynamic therapy, in particular to a photodynamic therapy optical rod.

Background

Photodynamic Therapy (PDT) is a new technology for disease diagnosis and treatment using photodynamic effects. The action is based on photodynamic effect, firstly, target tissue cells are marked by using photosensitive substances, and then after visible light with proper wavelength is locally irradiated, the photosensitizer is activated to generate photosensitive effect at the marked position to kill the target cells.

The existing photodynamic therapy apparatus generally transmits the therapeutic light generated by the host machine to the therapy head through optical fibers or directly arranges a light-emitting unit on the therapy head to generate the therapeutic light. The existing treatment head mostly adopts a rod-shaped structure so as to be conveniently stretched into tissues such as vagina, cervix, oral cavity, anus and the like for treatment. However, the size of the existing treatment head is mostly fixed, when the disease treatment is carried out in the vagina, the treatment light has irradiation blind areas due to the dilatation of the vagina and more folds of the vaginal wall, and the treatment effect is reduced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a photodynamic therapy light stick which can expand the vagina, reduce the irradiation blind area of therapeutic light and improve the treatment effect.

To achieve the above object, the photodynamic therapy light stick of the present invention comprises: the light bar comprises a light bar body, a light-emitting module, a light-transmitting protection tube, a connecting tube and a transparent expansion piece; the light-emitting module is arranged at the front end of the light stick body and extends along the axial direction of the light stick body; the light-transmitting protective tube is sleeved outside the light-emitting module, and two ends of the light-transmitting protective tube are connected with the light bar body; piston cavities are respectively arranged at two ends of the light-emitting module, the piston cavities extend along the radial direction of the light bar body, and an opening is formed in one end, close to the outer side wall of the light bar body, of each piston cavity; the expansion pieces are arranged outside the light-transmitting protection tube at intervals along the circumferential direction of the light bar body, piston rods are arranged at two ends of each expansion piece respectively, the piston rods are arranged in parallel along the axial direction of the light bar body, one ends of the piston rods are arranged in the piston cavities at two ends of the light-emitting module in a sliding mode respectively, and the other ends of the piston rods extend out of the piston cavities from the openings and are connected with the expansion pieces; one end of the connecting pipe is communicated with one end of each piston cavity far away from the expansion piece, and the other end of the connecting pipe is used for being connected with the photodynamic therapy host.

According to the photodynamic therapy light rod in the technical scheme, when the photodynamic therapy light rod is used, the connecting pipe is connected with the pressurizing device of the therapy host, the pressurizing device is connected to pressurize the piston cavity through the connecting pipe to enable the piston rod to extend out of the piston cavity, the piston rod pushes the expansion piece to move along the axial direction of the light rod body, so that the expansion piece can expand the vagina, therapeutic light rays emitted by the light emitting module can fully irradiate the inner wall of the vagina, irradiation blind areas are reduced, and the therapeutic effect is improved.

In one embodiment, the light bar body is further provided with a cooling pipe and a liquid discharge pipe, the cooling pipe is arranged on the light emitting module in a penetrating manner, and two ends of the cooling pipe are respectively communicated with one ends, far away from the expansion piece, of the piston cavities at two ends of the light emitting module; one end of the connecting pipe is communicated with the cooling pipe; one end of the liquid discharge pipe is communicated with the cooling pipe, and the other end of the liquid discharge pipe is used for being connected with the photodynamic therapy host.

When the expansion piece is used, the pressurizing device of the treatment host is connected with the cooling liquid injected from the connecting pipe, the cooling liquid enters the cooling pipe to cool the light-emitting module, and meanwhile the cooling liquid flows into the piston cavity to push the piston rod to enable the expansion piece to move and expand.

In one embodiment, the front end of the connecting pipe is inserted into the cooling pipe and extends to the front end of the cooling pipe, and the diameter of the connecting pipe is smaller than the inner diameter of the cooling pipe; the liquid discharge pipe is connected with the rear end of the cooling pipe.

The cooling liquid flows from the front end of the cooling pipe to the rear end of the cooling pipe, so that the cooling liquid stably flows in the cooling pipe, and the heated cooling liquid fully flows out of the cooling pipe.

In one embodiment, the drain pipe is further provided with a pressure regulating valve, and the opening pressure of the pressure regulating valve can be regulated.

The pressure of the cooling liquid is controlled by the pressure regulating valve, so that the length of the piston rod extending out of the piston cavity is controlled, and the expansion size of the expansion piece is adjusted.

In one embodiment, the expansion element is in a long strip structure, the cross section of the expansion element is in an arc shape, and the piston rod is connected with the inner arc surface of the expansion element.

The expansion piece can be in full contact with the inner wall of the vagina, and the pressure on the inner wall of the vagina is reduced.

In one embodiment, the front end of the optical wand body is further provided with a soft and smooth guide head.

The guiding head is convenient for the photodynamic therapy optical rod to be inserted into the vagina, the anus and the like, and the damage to the corresponding tissue is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a front cross-sectional view of a photodynamic therapy light wand provided in accordance with an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of the photodynamic therapy light wand of FIG. 1;

FIG. 3 is a left side view of the photodynamic therapy light wand of FIG. 1;

FIG. 4 is a schematic diagram of a pressure regulating valve of the photodynamic therapy light bar shown in FIG. 1;

reference numerals:

1-optical rod body, 11-piston cavity, 12-guide head, 13-cooling tube, 14-front body section, 15-rear body section, 16-liquid discharge tube, 17-connecting tube, 18-connecting head, 2-light emitting module, 21-light emitting unit, 22-mounting plate, 3-light transmission protection tube, 4-expanding piece, 41-piston rod, 411-piston, 5-pressure regulating valve, 51-valve body, 52-valve core, 53-spring, 54-pressure regulating rod and 55-flow limiting port.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

Referring to fig. 1 to 3, a photodynamic therapy light stick in one embodiment includes: the light bar comprises a light bar body 1, a light-emitting module 2, a light-transmitting protective tube 3, a connecting tube 16 and a transparent expansion piece 4; it can expand vagina, reduce the dead zone of therapeutic light and raise the therapeutic effect.

Specifically, the light emitting module 2 is installed at the front end of the light stick body 1, and the light emitting module 2 extends along the axial direction of the light stick body 1. The light transmission protection tube 3 is sleeved outside the light emitting module 2. The two ends of the light transmission protection tube 3 are connected with the optical rod body 1. The light wand body 1 is used to support and mount the remaining components. In one embodiment, the light wand body 1 comprises a front body section 14 and a rear body section 15. The length of the front body section 14 is shorter than the length of the rear body section 15. The light emitting module 2 is disposed between the front body section 14 and the rear body section 15. The two ends of the light-transmitting protection tube 3 are respectively connected with the front body section 14 and the rear body section 15. The transparent protective tube 3 is made of transparent medical plastic, and the treatment light can penetrate through the transparent protective tube 3 to irradiate the treatment area. In one embodiment, the light stick body 1 is further provided with a flexible and smooth guide head 12 at the front end thereof. Specifically, the guide head 12 is mounted to the front end of the body front section 14. The guide head 12 may be made of medical rubber material such as medical silica gel and latex. The guide head 12 may be hemispherical, or semi-ellipsoidal. The guiding head 12 is convenient for the photodynamic therapy optical rod to be inserted into tissues such as vagina, anus and the like, and the damage to the corresponding tissues is avoided.

Piston cavities 11 are respectively arranged at two ends of the light-emitting module 2. The piston cavity 11 extends in the radial direction of the light stick body 1. An opening is arranged at one end of the piston cavity 11 close to the outer side wall of the optical rod body 1. Specifically, the piston chamber 11 is disposed on the front body section 14 and the rear body section 15 at both ends of the light emitting module 2. In one embodiment, the piston cavities 11 at the two ends of the light emitting module 2 are respectively disposed along the circumferential direction of the light stick body 1 at intervals, and the piston cavities 11 at the two ends of the light emitting module 2 are one-to-one corresponding to each other along the axial direction of the light stick body 1 and are parallel to each other. In one embodiment, the piston cavity 11 is a cylindrical cavity extending in a radial direction of the light stick body 1.

The expanding pieces 4 are arranged outside the light-transmitting protection tube 3 at intervals along the circumferential direction of the light bar body 1. The expansion element 4 is provided with piston rods 41 at both ends thereof. The piston rods 41 are arranged in parallel along the axial direction of the light bar body 1. One end of the piston rod 41 is slidably disposed in the piston cavity 11 at the two ends of the light emitting module 2, and the other end of the piston rod 41 extends out of the piston cavity 11 from the opening and is connected to the expansion member 4. Specifically, one end of the piston rod 41 is provided with a piston 411, and the piston 411 is slidably disposed in the piston cavity 11. The other end of the piston rod 41 is fixedly connected to the front and rear ends of the expansion member 4. In one embodiment, the expansion elements 4 are in the form of elongate strips. The cross-section of the expansion element 4 is curved. The piston rod 41 is connected to the intrados of the expansion element 4. The expansion piece 4 can be in full contact with the inner wall of the vagina, and the pressure on the inner wall of the vagina is reduced. In one embodiment, the opening diameter of the piston chamber 11 is smaller than the diameter of the piston chamber 11 and the piston 411. The opening of the piston chamber 11 can prevent the piston 411 from sliding out of the piston chamber 11 through the opening.

One end of the connecting tube 17 communicates with the end of each piston chamber 11 remote from the expansion element 4. The other end of the connecting pipe 17 is used for connecting with the photodynamic therapy host. The connecting pipe 17 may be directly connected to the piston chamber 11, or may be indirectly connected to the piston chamber 11 through another member. In one embodiment, the light bar body 1 is further provided with a cooling pipe 13 and a liquid discharge pipe 16. The cooling pipe 13 is inserted through the light emitting module 2. Two ends of the cooling pipe 13 are respectively communicated with one ends of the piston cavities 11 at two ends of the light-emitting module 2, which are far away from the expansion piece 4. One end of the connection pipe 17 communicates with the cooling pipe 13. One end of the liquid discharge pipe 16 is communicated with the cooling pipe 13, and the other end of the liquid discharge pipe 16 is used for being connected with the photodynamic therapy host. Specifically, two ends of the cooling tube 13 are respectively connected with the optical wand body 1 and are communicated with one end of the piston cavity 11 far away from the expansion piece 4. The connection pipe 17 communicates with the cooling pipe 13 from the rear end of the cooling pipe 13. The drain pipe 16 communicates with the rear end of the cooling pipe 13. In one embodiment, the cooling tube 13 is assembled and connected to the front body section 14 and the rear body section 15 at both ends thereof. The cooling pipe 13 may be made of solid metal or metal alloy such as aluminum and copper with good heat conductivity. When the device is used, the pressurizing device of the therapeutic main machine is connected with the cooling liquid which is injected from the connecting pipe 17 and is pressurized, the cooling liquid enters the cooling pipe 13 to cool the light-emitting module 2, and simultaneously the cooling liquid flows into the piston cavity 11 to push the piston rod 41 to move and expand the expansion piece 4. In one embodiment, the tip of the connection pipe 17 is inserted into the cooling pipe 13 and extends toward the tip of the cooling pipe 13. The diameter of the connection pipe 17 is smaller than the inner diameter of the cooling pipe 13. A drain pipe 16 is connected to the rear end of the cooling pipe 13. The coolant flows from the front end of the cooling pipe 13 to the rear end of the cooling pipe 13, the coolant is made to flow stably in the cooling pipe 13, and the coolant after the temperature rise sufficiently flows out of the cooling pipe 13. It should be noted that the cooling liquid is mainly used for cooling heat generated by light emission of the light emitting module 2. In one embodiment, the light module 2 includes a light unit 21 and a mounting board 22. The light emitting unit 21 may employ a semiconductor narrow spectrum light emitting unit in the related art. The mounting plate 22 may be a flexible circuit board or an aluminum plate. The mounting plate 22 is formed in a cylindrical shape to facilitate the passage of the cooling pipe 13 therethrough, and the light emitting units 21 are provided on the mounting plate 22 at intervals in the axial and circumferential directions of the cylindrical structure. In one embodiment, a connector 18 is further disposed at the rear end of the light stick body 1, and the connector 18 is electrically connected to the light emitting module 2. So that the light-emitting module 2 is connected with the photodynamic therapy main machine through the connector 18.

In one embodiment, the drain pipe 16 is further provided with a pressure regulating valve 5, and the opening pressure of the pressure regulating valve 5 is adjustable. The pressure regulating valve 5 may be constructed in accordance with the prior art. Referring to fig. 4, a schematic diagram of a pressure regulating valve 5 in the prior art is shown. The inlet and outlet ports at both ends of the valve body 51 communicate through a restriction 55. The pressure regulating lever 54 is screwed to the valve body 51, and the pressure regulating lever 54 rotates to control the compression amount of the spring 53, thereby adjusting the pressure at which the spool 52 opens the orifice 55. The pressure regulating valve 5 controls the pressure of the cooling liquid, thereby controlling the length of the piston rod 41 extending out of the piston cavity 11 and adjusting the expansion size of the expansion piece 4.

According to the photodynamic therapy light stick in the technical scheme, when the photodynamic therapy light stick is used, the connecting pipe 17 is connected with the pressurizing device of the therapy host, the pressurizing device is connected to pressurize the piston cavity 11 through the connecting pipe 17, so that the piston rod 41 extends out of the piston cavity 11, the piston rod 41 pushes the expansion piece 4 to move along the axial direction of the light stick body 1, so that the expansion piece 4 can expand the vagina, and thus, the therapeutic light emitted by the light emitting module 2 can fully irradiate the inner wall of the vagina, the irradiation blind area is reduced, and the therapeutic effect is improved.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A photodynamic therapy optical wand is characterized by comprising an optical wand body, a light-emitting module, a light-transmitting protection tube, a connecting tube and a transparent expansion piece; the light-emitting module is arranged at the front end of the light stick body and extends along the axial direction of the light stick body; the light-transmitting protective tube is sleeved outside the light-emitting module, and two ends of the light-transmitting protective tube are connected with the light bar body; piston cavities are respectively arranged at two ends of the light-emitting module, the piston cavities extend along the radial direction of the light bar body, and an opening is formed in one end, close to the outer side wall of the light bar body, of each piston cavity; the expansion pieces are arranged outside the light-transmitting protection tube at intervals along the circumferential direction of the light bar body, piston rods are arranged at two ends of each expansion piece respectively, the piston rods are arranged in parallel along the axial direction of the light bar body, one ends of the piston rods are arranged in the piston cavities at two ends of the light-emitting module in a sliding mode respectively, and the other ends of the piston rods extend out of the piston cavities from the openings and are connected with the expansion pieces; one end of the connecting pipe is communicated with one end of each piston cavity far away from the expansion piece, and the other end of the connecting pipe is used for being connected with the photodynamic therapy host.

2. The photodynamic therapy light bar according to claim 1, wherein a cooling pipe and a liquid discharge pipe are further arranged on the light bar body, the cooling pipe is arranged on the light emitting module in a penetrating manner, and two ends of the cooling pipe are respectively communicated with one ends of the piston cavities at two ends of the light emitting module, which are far away from the expansion piece; one end of the connecting pipe is communicated with the cooling pipe; one end of the liquid discharge pipe is communicated with the cooling pipe, and the other end of the liquid discharge pipe is used for being connected with the photodynamic therapy host.

3. The photodynamic therapy light wand of claim 2, wherein a forward end of the connecting tube is inserted into the cooling tube and extends toward a forward end of the cooling tube, the connecting tube having a diameter smaller than an inner diameter of the cooling tube; the liquid discharge pipe is connected with the rear end of the cooling pipe.

4. The photodynamic therapy light bar of claim 2, wherein a pressure regulating valve is further provided on the drain pipe, and the opening pressure of the pressure regulating valve is adjustable.

5. The photodynamic therapy light wand of claim 1, wherein the extender is in the form of a strip, the cross-section of the extender is curved, and the piston rod is connected to the intrados of the extender.

6. The photodynamic therapy light wand of claim 1, wherein a soft and smooth guide head is further provided at the front end of the light wand body.