Hand-held extraocular laser transducer

Abstract

The application relates to a handheld eye laser converter in the field of medical devices, which comprises a laser probe, a sleeve, an adjusting tube, a focusing lens and a fixing cap, the needle tube of the laser probe extends into the sleeve, the extending section of the laser probe is matched with the sleeve and is sleeved with the tube wall at the rear end of the sleeve, a silica gel centralizer seat is arranged in the sleeve to facilitate the penetration of the needle tube, the other end of the sleeve is screw-connected with the adjusting tube, the other end of the adjusting tube is provided with a mirror seat, the focusing lens is matched and installed in the mirror seat, and the fixing cap is matched and covered with the mirror seat to fix the focusing lens. The handheld eye laser converter of the application changes the fixed short-focus laser probe into a structure with adjustable focal length, the rotating length of the adjusting tube and the sleeve is changed to lengthen the incident light path of the laser, the focusing spot position of the focusing lens is adjusted, the converter is handheld to perform surgical operation at the safe position outside the eye, and additional damage to the surrounding of the operation caused by the close-range laser operation is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a handheld external ocular laser converter for ophthalmic surgery. Background Technology

[0002] The most crucial step in rhegmatogenous retinal detachment repair surgery is retinal fixation, commonly achieved through methods such as retinal laser photocoagulation, retinal cryotherapy, and retinal electrocoagulation. The common mechanism of these three methods is to cause physical damage to the retina and pigment epithelium, resulting in scarring and ultimately sealing the retinal tear. Electrocoagulation has been abandoned due to its potential to cause scleral necrosis. Retinal cryotherapy is frequently used in scleral compression procedures, but its extensive lesions often lead to unnecessary additional damage and increase the risk of proliferative vitreoretinopathy. Retinal laser photocoagulation is the most precise method and is often used in vitrectomy. However, because the focal length of commercially available laser fibers is approximately 5mm, a laser probe must be inserted into the eye or very close to the retina to generate a laser spot, which can easily damage the retina and pigment epithelium. Summary of the Invention

[0003] This invention addresses the problem that the focal length of the laser generator in existing retinal photocoagulation fixation procedures is too short, which can easily cause additional damage. It provides a method that can change the focal length of the laser fiber, converting the intraocular laser into a handheld extraocular laser by zooming in and out, which facilitates retinal photocoagulation fixation and avoids additional eye damage during surgery.

[0004] The objective of this invention is achieved as follows: a handheld extraocular laser converter, characterized in that it comprises a laser probe, a sleeve, an adjustment tube, a focusing lens, and a fixing cap. The needle tube of the laser probe extends into the sleeve, and the extended section of the laser probe is sleeved with the tube wall at the rear end of the sleeve. A silicone alignment seat is provided inside the sleeve to facilitate the needle tube's penetration. The other end of the sleeve is threadedly connected to the adjustment tube, and the other end of the adjustment tube is provided with a lens mount. The focusing lens is fitted and installed in the lens mount, and the fixing cap is fitted and covered with the lens mount to fix the focusing lens.

[0005] To facilitate the installation of the sleeve and the laser probe, the axial length of the sleeve and the laser probe mating section is adjustable, and the inner circumference of the sleeve is provided with a tightening rubber ring.

[0006] To facilitate adjustment of the incident optical path, the threaded connection between the sleeve and the adjusting tube is adjustable in length to adjust the optical path length of the incident laser.

[0007] To facilitate the fixed installation of the focusing lens, the end of the lens mount is provided with a first inner step for installing the focusing lens. A first rubber seat is provided in the first inner step. The mating end of the fixing cap is provided with a second inner step for pressing the focusing lens. A second rubber seat is provided in the second inner step. The focusing lens is fixed between the first rubber seat and the second rubber seat. The fixing cap is provided with a light-transmitting hole corresponding to the center of the focusing lens.

[0008] To facilitate fixing the focusing lens, the fixing cap is threadedly connected to the lens mount.

[0009] Furthermore, the mirror mount is integrally connected to the adjustment tube.

[0010] To facilitate high-temperature sterilization during repeated use, the sleeve, adjusting tube, mirror base, and fixing cap are all made of stainless steel.

[0011] The handheld extraocular laser converter of the present invention modifies a laser probe with a fixed short focal length and increases the incident optical path of the laser by changing the screw-on length of the adjustment tube and the sleeve, thereby adjusting the focusing lens to focus the spot position. This allows the laser photocoagulation operation to be performed by handheld converter in a safe position outside the eye, avoiding additional damage to the eye caused by setting the laser probe at close range. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the handheld extraocular laser converter invented.

[0013] The components include: 1. Laser probe; 2. Tightening rubber ring; 3. Sleeve; 4. Silicone straightening seat; 5. Adjustment tube; 6. Lens mount; 7. First rubber seat; 8. Second rubber seat; 9. Fixing cap; 10. Focusing lens. Detailed Implementation

[0014] The handheld extraocular laser converter of the present invention will now be described in detail with reference to the accompanying drawings.

[0015] like Figure 1 As shown, this is a handheld extraocular laser converter of the present invention, comprising a laser probe 1, a sleeve 3, an adjustment tube 5, a focusing lens 10, and a fixing cap 9. The needle tube of the laser probe 2 extends into the sleeve 3, and the extended section of the laser probe 2 is fitted with the tube wall at the rear end of the sleeve 3. A silicone aligning seat 4 is provided inside the sleeve 3 to facilitate the penetration of the laser probe needle tube. The other end of the sleeve 3 is threadedly connected to the adjustment tube 5, and the other end of the adjustment tube 5 is integrally connected to a lens mount 6. The focusing lens 10 is fitted and installed inside the lens mount 6. The fixing cap 9 fits and covers the lens mount 6 to fix the focusing lens. The laser probe described above can be directly modified from a medical intraocular laser probe, or a medical laser fiber can be fitted and installed inside the sleeve.

[0016] To facilitate the installation of the sleeve 3 and the laser probe 1, the axial length of the sleeve 3 and the laser probe 1 fitting section is adjustable. The inner circumference of the sleeve is provided with a tightening rubber ring 2. After the laser probe 1 is fitted with the sleeve, the tightening rubber ring 2 can squeeze and fix the position of the laser probe 1 extending into the sleeve 3, and the insertion position can be adjusted appropriately.

[0017] To facilitate adjustment of the incident optical path, the threaded connection between the sleeve 3 and the adjusting tube 5 is adjustable in length, thereby adjusting the distance between the laser probe emission point and the focusing lens 10, thus changing the incident optical path length and achieving focal length adjustment.

[0018] To facilitate fixing the focusing lens 10, the end of the lens mount 6 is provided with a first inner step for mounting the focusing lens 10. A first rubber seat 7 is provided in the first inner step. The mating end of the fixing cap 9 is provided with a second inner step for pressing the focusing lens 10. A second rubber seat 8 is provided in the second inner step. The focusing lens 10 is fixed between the first rubber seat 7 and the second rubber seat 8, and the focusing lens 10 is fixed by the fixing cap 9. The fixing cap 9 is provided with a light-passing hole corresponding to the center of the focusing lens 10 to facilitate the passage of laser light.

[0019] For easy disassembly and assembly, the fixing cap 10 is threadedly connected to the lens mount 6; for easy high-temperature sterilization of each component during repeated use, the sleeve 3, adjusting tube 5, lens mount 6 and fixing cap 8 are all made of stainless steel, and the first rubber seat and the second rubber seat can be made of heat-resistant silicone material.

[0020] The handheld extraocular laser converter of the present invention can be directly modified from existing medical laser probes or doctor's laser fibers. The depth of the laser probe inserted into the sleeve and the axial position of the adjustment tube screwed to the other end of the sleeve can be adjusted within a certain range. Rotating the length of the adjustment tube screwed to the sleeve can adjust the distance of the laser passing through the focusing lens 10, thereby adjusting the incident optical path so that the laser is focused at a suitable position after being refracted by the focusing lens 10 to meet the needs of surgical operation. Using the above-mentioned handheld extraocular laser converter, intraocular laser instruments that require close contact can be transformed into handheld extraocular laser instruments by adjusting the incident optical path to extend the focal point. During photocoagulation surgery for retinal fixation, under a microscope, the retina is lifted with a scleral depressor to release subretinal fluid. The retinal neuroepithelium and pigment epithelium are in contact. The operator uses the handheld extraocular laser converter of the present invention to aim the aiming beam at the edge of the retinal tear that needs laser photocoagulation, triggering the laser emission site and emitting the laser to complete the photocoagulation operation. The above procedure successfully converted intraocular laser to extraocular laser, simplifying the surgical process, avoiding the use of cryotherapy, reducing unnecessary damage to the retina, making the treatment more precise, and reducing additional damage.

[0021] In addition, the handheld extraocular laser converter of the present invention fills the gap in handheld extraocular laser photocoagulation operation; and the handheld extraocular laser converter of the present invention can be directly added and modified on the basis of existing intraocular laser equipment. The overall structure is easy to disassemble and assemble. All parts are made of stainless steel or high temperature resistant materials, which can be sterilized at high temperature and reused, making it easy to promote and popularize its use on a large scale.

Claims

1. A handheld extraocular laser converter, characterized in that, The device includes a laser probe, a sleeve, an adjustment tube, a focusing lens, and a fixing cap. The laser probe's needle tube extends into the sleeve, and the extended section of the laser probe fits into the wall of the sleeve's rear end. The sleeve has a silicone centering seat to facilitate needle tube penetration. The other end of the sleeve is threaded to the adjustment tube, and the other end of the adjustment tube has a lens mount. The focusing lens is fitted and installed in the lens mount. The fixing cap fits into the lens mount to secure the focusing lens.

2. The handheld extraocular laser converter according to claim 1, characterized in that, The axial length of the sleeve and the laser probe mating section is adjustable, and the inner circumference of the sleeve is provided with a tightening rubber ring.

3. The handheld extraocular laser converter according to claim 2, characterized in that, The threaded connection between the sleeve and the adjusting pipe has an adjustable length to adjust the optical path length of the incident laser.

4. The handheld extraocular laser converter according to claim 2, characterized in that, The end of the lens mount is provided with a first inner step for mounting a focusing lens. A first rubber seat is provided in the first inner step. The mating end of the fixing cap is provided with a second inner step for pressing the focusing lens. A second rubber seat is provided in the second inner step. The focusing lens is fixed between the first rubber seat and the second rubber seat. The fixing cap is provided with a light-transmitting hole corresponding to the center of the focusing lens.

5. The handheld extraocular laser converter according to claim 2, characterized in that, The fixing cap is threadedly connected to the mirror mount.

6. The handheld extraocular laser converter according to claim 2, characterized in that, The mirror mount is integrally connected to the adjustment tube.

7. The handheld extraocular laser converter according to any one of claims 1-6, characterized in that, The sleeve, adjusting tube, mirror mount, and fixing cap are all made of stainless steel.

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