CN218075431U - Laser vitreous body ablation device with push rod type optical fiber head - Google Patents

Abstract

The utility model provides a laser vitreous body ablation device with a push rod type optical fiber head, relating to the technical field of excision instruments for vitreous body fluid in ophthalmic surgery. The laser vitreous body ablation device with the push-down optical fiber head comprises an operation table, a light source assembly and the push-down optical fiber head, wherein the push-down optical fiber head comprises a head end sleeve, a handle, an optical fiber fixing shaft and a push rod; therefore, the extension and retraction of the optical fiber are not influenced by the rotation angle of the push rod type optical fiber head, the optical fiber is prevented from being bent, the structural integrity of the optical fiber is ensured, and meanwhile, the illumination on peripheral angles is facilitated.

Description

Laser vitreous body ablation device with push rod type optical fiber head

Technical Field

The utility model relates to a excision apparatus technical field of vitreous humor in ophthalmic surgery especially relates to a take laser vitreous body of push-down optical fiber head to melt device.

Background

The normal visual effect of the eye relies on a transparent refractive medium. Dioptric media is the pathway for light entering the eye to reach the retina and consists of the cornea, aqueous humor, lens, vitreous. Wherein, the vitreous body occupies 4/5 of the volume of the eyeball, is a semisolid transparent gel in the eye, is positioned behind the crystalline lens and in front of the retina, and is filled in the vitreous cavity to ensure that the retina is attached to the choroid. Normally, the glass body has good light transmission. With age, the vitreous liquefies, separates from the retina and forms a posterior vitreous detachment, during which traction may be exerted on the retina. When retinal vascular diseases such as diabetic retinopathy, macular diseases such as retinal detachment, macular hole and anterior membrane, and posterior segment diseases of complicated eyes, chronic uveitis, endophthalmitis, parasites, tumors and the like occur, vitrectomy (vitreous operation) is required to eliminate turbid vitreous bodies and relieve vitreous retinal traction, restore the transparency of refractive media, promote retinal reposition and the like so as to improve the visual function of patients.

In the posterior segment operation of eyes, the vitreous body is eliminated as much as possible and the traction is released, so that the recurrence of diseases and the generation of complications can be effectively reduced. For patients with vitreous hemorrhage or endophthalmitis, vitreous body will present turbid state due to inflammation or hematocele, and visibility is enhanced, so that distinction is facilitated. However, most other patients, especially young patients, still have vitreous bodies in a transparent jelly state, and the surgeon generally relies on the intraocular illumination device and the mobility of the vitreous body to identify the transparent vitreous body for vitreous body elimination, but due to the problems of decreased light angle, contrast and mobility of the tightly adhered vitreous body, it is difficult to distinguish the transparent vitreous body adhered to the peripheral retinal surface or the surface of the pathological proliferation membrane from the transparent perfusate (sterile balanced salt solution) for maintaining the intraocular pressure during the operation, so that the surgeon is difficult to eliminate the vitreous body.

The current intraoperative illumination devices applied to vitrectomy procedures are illumination fibers. The optical fiber is a light-conducting medium made of glass or plastic fiber, and can realize long-distance illumination by utilizing the principle of total reflection of light. The use of an optical coupling element to couple light into an optical fiber and direct it into the eye has been described in detail in a chinese granted patent of invention, application No. CN201080009714.9, for in-eye illumination using light generated by an optical fiber. In a dark room, a parallel light beam is passed through a transparent gel, and from a direction perpendicular to the light beam, a cloudy, bright light column is visible with particulate scintillation, a phenomenon known as the tyndall effect. The tyndall effect is a common physical method for distinguishing between colloid and solution, and the principle is used to distinguish relatively transparent vitreous body in operation. This is seen when the light is transmitted into the eye by means of optical fibers to form a column of light. The intensity of the Tyndall effect is inversely proportional to the wavelength of the incident light, and the Tyndall effect is stronger when the wavelength is shorter, so that the selection of the appropriate short-wavelength optical fiber is beneficial to enhancing the Tyndall effect and increasing the visibility of the glass body.

However, in the case of the glass cutting operation, it is convenient for the optical fiber to align the front illumination, and it is also possible to increase the contrast of the image within the illumination range, and to display the vitreous body more clearly, however, when the periphery is illuminated, the optical fiber metal rod must be rotated, so that the optical fiber opening is aligned with the portion to be illuminated, and at the same time, since the ophthalmic optical fiber structure is thin and the surgical incision is narrow, the optical fiber is bent easily when the optical fiber is rotated, so that the optical fiber opening cannot be aligned with the illumination position, and in addition, the optical fiber structure is damaged easily when the optical fiber is bent, thereby damaging the illumination function. For example, in patent CN201080009714.9, adjusting the illumination angle of an optical fiber for intraocular illumination is complicated, which increases the complexity and time of the operation steps.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take laser vitreous body ablation device of push-down optical fiber head has solved present ophthalmic surgery and has appeared that optic fibre can't just to the problem of illumination position and fragile in the in-process of illumination.

The utility model provides a take laser vitreous body of push-down optical fiber head to melt device, includes an operation panel, a light source subassembly and a push-down optical fiber head, and this push-down optical fiber head contains a head end sleeve pipe, a handle, an optic fibre fixed axle and a push rod, the head end sleeve pipe set up in the one end of handle, head end sheathed tube hole with the hole of handle is coaxial and keep the route and be provided with optic fibre, be provided with in the hole of handle the optic fibre fixed axle, this optic fibre fixed axle is connected and is fixed with optic fibre, the one end of push rod with the optic fibre fixed axle is connected for drive the removal of optic fibre fixed axle, the other end slidable of push rod set up in a sliding tray that the handle side was seted up, wherein, optic fibre with the light source subassembly is connected.

Preferably, the optical fiber at the end of the handle far away from the head end sleeve is spirally wound to form a spiral optical fiber section.

Further, the spiral optical fiber section comprises 1 to 10 spirals.

Preferably, the head end sleeve is a straight-tube-shaped head end sleeve.

Preferably, the head end sleeve is an elbow-shaped head end sleeve with one end bent into an arc shape.

Further, the bending length of the elbow type head end sleeve is 1mm to 10mm.

Furthermore, the included angle between the straight end and the bending end of the elbow-type head end sleeve is 90-179 degrees.

Preferably, the optical fiber is a light guide fiber.

Preferably, the adjustable wavelength range of the optical fiber is 510 nm-750 nm. The wavelength range can effectively filter harmful light to irradiate the retina while increasing the visibility of the vitreous body, and reduce the light damage of the retina.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a laser vitreous body ablation device with a push-down optical fiber head, which comprises an operation table, a light source component and a push-down optical fiber head, wherein the push-down optical fiber head comprises a head end sleeve, a handle, an optical fiber fixing shaft and a push rod; therefore, the stretching of the optical fiber is not influenced by the rotating angle of the push rod type optical fiber head, the optical fiber is prevented from being bent, the structural integrity of the optical fiber is ensured, the lighting function is protected, and meanwhile, the lighting of peripheral angles is facilitated.

Drawings

Fig. 1 is a schematic structural view of a push-rod type optical fiber head according to the present invention;

FIG. 2 is a schematic view of the structure of the present invention during operation;

fig. 3 is a schematic structural view of the push rod type optical fiber head including the straight-tube type head end sleeve of the present invention;

fig. 4 is a schematic structural view of the push-down optical fiber head including the elbow-type head end sleeve of the present invention.

Wherein:

1-push rod type optical fiber head, 11-head end sleeve, 12-handle, 13-optical fiber fixing shaft, 14-push rod, 15-optical fiber, 151-spiral optical fiber section.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a laser vitreous body ablation device with a push rod type optical fiber head includes an operation table, a light source assembly and a push rod type optical fiber head 1, where the push rod type optical fiber head 1 includes a head end sleeve 11, a handle 12, an optical fiber fixing shaft 13 and a push rod 14, the head end sleeve 11 is disposed at one end of the handle 12, an inner hole of the head end sleeve 11 is coaxial with an inner hole of the handle 12 and keeps a path and is provided with an optical fiber 15, the optical fiber fixing shaft 13 is disposed in the inner hole of the handle 12, the optical fiber fixing shaft 13 is fixedly connected with the optical fiber 15, one end of the push rod 14 is connected with the optical fiber fixing shaft 13 to drive the optical fiber fixing shaft 13 to move, and the other end of the push rod 14 is slidably disposed in a sliding groove formed in a side edge of the handle 12, where the optical fiber 15 is connected with the light source assembly. The optical fiber 15 is an optical fiber 15.

Specifically, the light source assembly comprises a light source, a main optical fiber, a light source switch and an optical fiber port. Preferably, at least two light sources are provided, at least one of which is used as a backup light source to ensure that the light sources are sufficient. The main optical fiber is connected with the light source and used for receiving light emitted by the light source. One end of the optical fiber port is positioned in the operation table and connected with the main optical fiber, and the other end of the optical fiber port is arranged on the surface of the operation table so as to be connected with the optical fiber 15 in the push rod type optical fiber head 1. The light source switch is connected between the main optical fiber and the optical fiber 15 in the push rod type optical fiber head 1 to control the on-off of the optical fiber 15. An operation interface is arranged on the operation table, and a key (the key can adopt a touch screen or a button type) is arranged on the operation interface to control the light source to be switched on and switched off.

Preferably, the optical fiber 15 at the end of the handle 12 away from the head-end ferrule 11 is spirally wound to form a spiral optical fiber segment 151. The helical fiber segment 151 is configured to facilitate extension or contraction of the optical fiber 15. Further, the number of the spirals included in the spiral optical fiber segment 151 is 1 to 10, and only the extension or contraction range in use needs to be satisfied, and the specific number is not required to be excessive. Certainly, during production, the spiral optical fiber section 151 is not required, and when the spiral optical fiber section 151 is not provided, only the optical fiber fixing shaft 13 is required to drive the optical fiber 15 far away from one side of the head end sleeve 11 to move back and forth, that is, the optical fiber 15 located outside the push rod type optical fiber head 1 is driven to move, it should be noted that an opening is arranged at one end, far away from the head end sleeve 11, in the handle 12, so that the optical fiber can be conveniently moved. Of course, a slightly curved section of the optical fiber 15 may be used to meet the movement requirements.

In order to meet different operation requirements, referring to fig. 4, the head end cannula 11 is a straight-tube type head end cannula 11. Referring to fig. 3, the head end sleeve 11 may also be an elbow type head end sleeve 11 with one end bent into an arc shape. Further, the bending length of the elbow-type head end sleeve 11 is 1mm to 10mm. The angle between the straight end and the bent end of the elbow-type head end sleeve 11 is 90-179 degrees. More preferably, the bending length of the elbow-shaped head end sleeve 11 is 6mm, and the included angle between the straight end of the elbow-shaped head end sleeve 11 and the bending end is 120 degrees, so that the operation of the operation is facilitated.

The intensity of the tyndall effect is inversely proportional to the wavelength of the incident light, and the lower the tyndall effect is, the lower the visibility of the glass body in a transparent jelly state is, so that the visibility of the glass body can be increased by appropriately decreasing the wavelength of the incident light. However, short wavelengths of light are harmful to the retina, and wavelengths below 510nm may have a direct relationship with retinal photodamage, with shorter wavelengths potentially causing greater damage. Therefore, the adjustable wavelength range of the optical fiber 15 is preferably 510nm to 750nm. The wavelength range can effectively filter harmful light to irradiate the retina while increasing the visibility of the vitreous body, and reduce the light damage of the retina.

Preferably, the outer wall of the handle 12 is provided with anti-slip stripes, so that friction force can be effectively increased, and slipping in the operation process is prevented; preferably, the handle 12 may be configured in a cylindrical, gourd-shaped configuration for easy handling and manipulation. The tail end of the head end sleeve 11 is arranged into an annular plane or a conical inclined plane and is provided with an opening, and the opening is an optical fiber opening, so that the optical fiber 15 can be conveniently extended out or retracted in; the diameter of the head end sleeve 11 can be designed according to the size of a scleral incision in the conventional vitrectomy; preferably, the head end sleeve 11 is made of a metal material. At the same time, the entire handle 12 assembly is sterile or sterilizable and can be reused or used as a disposable product.

Preferably, telescopic spherical balls are arranged on the side edge of the optical fiber fixing shaft 13, a row of hemispherical grooves are formed in the inner side edge of the handle 12, when the push rod 14 drives the optical fiber fixing shaft 13 to move, the spherical balls on the optical fiber fixing shaft 13 are clamped into the hemispherical grooves in corresponding positions, and therefore position fastening is guaranteed.

Referring to fig. 2, in operation, tip cannula 11 is inserted into a scleral incision in the eye and light is directed into the eye. When the push rod type optical fiber head 1 needs to be rotated to enable the opening of the optical fiber 15 to face a part needing illumination, the push rod 14 is pushed, the push rod 14 drives the optical fiber fixing shaft 13 to move back and forth, and further drives the optical fiber 15 to move back and forth, so that the optical fiber 15 extends out of or retracts into the head end sleeve 11, the opening of the optical fiber 15 faces the part needing illumination, and illumination of peripheral angles is facilitated.

The utility model provides a laser vitreous body ablation device with a push rod type optical fiber head 1, which comprises an operation table, a light source component and a push rod type optical fiber head 1, wherein the push rod type optical fiber head 1 comprises a head end sleeve 11, a handle 12, an optical fiber fixing shaft 13 and a push rod 14, when the push rod type optical fiber head 1 needs to be rotated to enable an opening of an optical fiber 15 to be just opposite to a part needing illumination, only the push rod 14 needs to be pushed, the push rod 14 drives the optical fiber fixing shaft 13 to move back and forth, and further drives the optical fiber 15 to move back and forth, so that the optical fiber extends out or returns into the head end sleeve 11; therefore, the extension and retraction of the optical fiber 15 are not affected by the rotation angle of the push rod type optical fiber head 1, the optical fiber 15 is prevented from being bent, the structural integrity of the optical fiber 15 is ensured, and meanwhile, the illumination of peripheral angles is facilitated.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims (9)

1. The utility model provides a take laser vitreous body of push-down optical fiber head to melt device, includes an operation panel, a light source subassembly, its characterized in that still includes a push-down optical fiber head, and this push-down optical fiber head contains a head end sleeve pipe, a handle, an optic fibre fixed axle and a push rod, the head end sleeve pipe set up in the one end of handle, head end sheathed tube hole with the hole of handle is coaxial and keep the route and be provided with optic fibre, be provided with in the hole of handle the optic fibre fixed axle, this optic fibre fixed axle is connected and is fixed with optic fibre, the one end of push rod with the optic fibre fixed axle is connected for drive the removal of optic fibre fixed axle, the other end slidable of push rod set up in a sliding tray that the handle side was seted up, wherein, optic fibre with connect.

2. The laser vitreous ablation device of claim 1 wherein the optical fiber at an end of said handle distal from said head end ferrule is helically coiled to form a helical fiber segment.

3. The laser vitreous ablation device with push-rod fiber head of claim 2 wherein said helical fiber segment contains from 1 to 10 spirals.

4. The laser vitreous ablation device with a push-rod fiber head of claim 1 wherein the head end sleeve is a straight barrel type head end sleeve.

5. A laser vitreous ablation device with a push-rod fiber optic head as in claim 1, wherein said head end sleeve is an elbow-type head end sleeve with an end bent in an arc.

6. The laser vitreous ablation device with a push-rod fiber tip of claim 5 wherein said elbow-type tip sleeve has a bend length of 1mm to 10mm.

7. The laser vitreous ablation device with a push-rod fiber tip of claim 5 wherein the angle between the straight end of the elbow-type tip sleeve and the bent end is 90 ° to 179 °.

8. The laser vitreous ablation device with a push-rod fiber tip of claim 1 wherein said optical fiber is a light guide fiber.

9. The laser vitreous ablation device with push-rod fiber head of claim 1 wherein the adjustable wavelength range of the fiber is 510nm to 750nm.

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