A fiber-optically guided glaucoma implant catheter

Abstract

The application relates to the technical field of catheters, and discloses an optical fiber-guided glaucoma implant catheter which comprises a laser light source body, an output interface is fixedly installed on the right side of the laser light source body, an implant catheter mechanism is arranged on the right side of the output interface, and a joint fixing mechanism is arranged on the right side of the laser light source body. The optical fiber-guided glaucoma implant catheter support is provided with the implant catheter mechanism, the distal-end catheter is left in the Schlemm's canal, light is guided to be extracted, the catheter is left in the Schlemm's canal to communicate the anterior chamber with the Schlemm's canal, aqueous humor is drained into the catheter left in the Schlemm's canal, the Schlemm's canal is supported and expanded in a 360-degree range, and the dense small holes arranged on the inner wall of the distal-end catheter are used for draining the aqueous humor into the Schlemm's canal, so that the purpose of intra-aqueous humor drainage is achieved, the effect of pressure reduction is higher, and the trauma is smaller.

Description

Technical Field

[0001] This invention relates to the field of catheter technology, specifically to a fiber optic-guided glaucoma implantation catheter. Background Technology

[0002] Currently, the main treatment for glaucoma is surgery. Internal drainage is the most common method for treating glaucoma. Common minimally invasive glaucoma surgery involves surgically cutting the trabecular meshwork and the outer wall of the Schlem's canal to connect the anterior chamber and the Schlem's canal. Some surgical methods use a microcatheter to open the lower Schlem's canal, thereby reopening the collapsed Schlem's canal. However, traditional surgical methods still have problems such as complex operation, large surgical trauma, easy bleeding, long operation time, and the possibility of the Schlem's canal collapsing again after opening.

[0003] In existing technologies, glaucoma stents resembling thumbtacks are used to address the problem of Schlem's canal collapse. These stents are inserted into the Schlem's canal wall to connect the Schlem's canal and the anterior chamber. However, in practical use, these stents are prone to blockage due to their small inner diameter. Furthermore, they do not support the collapsed Schlem's canal and cannot clear the collapsed portion of the canal. Consequently, the pressure-reducing effect is not ideal, and multiple stents need to be implanted to achieve the desired effect. Therefore, it is necessary to develop an improved fiber optic guided glaucoma implantation catheter to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a fiber optic guided glaucoma implantation catheter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fiber optic guided glaucoma implantation catheter, comprising a laser source body, an output interface fixedly installed on the right side of the laser source body, an implantation catheter mechanism disposed on the right side of the output interface, and a connector fixing mechanism disposed on the right side of the laser source body.

[0006] Preferably, the implantation catheter mechanism includes an optical fiber connector, which is located inside the output interface. An optical fiber body is located on the right side of the optical fiber connector. A rubber sheath, a proximal catheter, and a distal catheter are located outside the optical fiber body. The distal catheter has small holes distributed in 360 degrees to facilitate laser guidance of the catheter through the implantation catheter mechanism.

[0007] Preferably, the proximal conduit is located on the right side of the rubber sheath, the distal conduit is located on the right side of the proximal conduit, and the left side of the proximal conduit is fixedly installed with the right side of the rubber sheath, which facilitates the protection of the optical fiber body.

[0008] Preferably, the optical fiber body is made of plastic, and the optical fiber body has a diameter variation in the area inside the proximal and distal conduits, and the diameter variation of the optical fiber body changes from a large diameter to a small diameter, which facilitates the delivery of laser light to form a high-spot light.

[0009] Preferably, the distal end of the distal catheter is provided with a smooth round head, and the interior of the smooth round head of the distal catheter is provided with a through hole connecting the inside and outside of the tube. The inner wall of the distal catheter is provided with dense small holes, and the direction of the dense small holes on the inner wall of the distal catheter is staggered at 360 degrees. The distal catheter is a transparent polymer tube that can be implanted in the human body, which facilitates the transmission of the laser output from the laser source through the optical fiber body to the smooth round head of the distal catheter to form a bright spot.

[0010] Preferably, the connector fixing mechanism includes a rotation limiting plate, which is fixedly installed on the right side of the laser source body. A limiting strip is fixedly installed on the inner side of the rotation limiting plate. A bidirectional threaded rod is rotatably installed inside the rotation limiting plate. A clamping block is installed on the outer thread of the bidirectional threaded rod. A handle is fixedly installed on the front of the bidirectional threaded rod to facilitate fixing the fiber optic connector through the connector fixing mechanism.

[0011] Preferably, a groove is provided at the corresponding position of the clamping block and the limiting strip, and the limiting strip is slidably installed inside the groove provided inside the clamping block, thereby improving stability.

[0012] Compared with the prior art, the present invention provides a fiber optic guided glaucoma implantation catheter, which has the following beneficial effects: 1. This fiber-optic guided glaucoma implantation catheter, through its specially designed implantation catheter mechanism, places the distal catheter within the Schlem's canal during use. This connects the anterior chamber to the Schlem's canal, allowing aqueous humor to drain into the catheter within the canal. By supporting and expanding the Schlem's canal, and through dense perforations in the distal catheter wall, aqueous humor is introduced into the Schlem's canal, resulting in enhanced drainage and pressure reduction. Simultaneously, the Schlem's canal can be cleared during implantation, further improving the pressure reduction effect. Laser guidance is used during implantation; a continuous or pulsed laser beam is output from the laser fiber and transmitted through the fiber to the rounded end of the distal catheter, forming a bright spot at the distal catheter tip for navigation and positioning, ensuring more accurate implantation. After the distal catheter reaches the desired position, the fiber is withdrawn, leaving the distal catheter in place. The appropriate length is adjusted, and excess catheter is removed. This effectively utilizes the catheter to drain aqueous humor and support and expand the Schlem's canal.

[0013] 2. This fiber optic guided glaucoma implantation catheter, through its connector fixing mechanism, allows the clamp to fix the fiber optic connector by rotating the handle during use, thereby preventing the fiber optic connector from falling off due to accidental dragging and improving the tightness of the connection between the fiber optic connector and the output interface. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the laser source body and the implantation catheter mechanism of the present invention; Figure 3 This is a schematic diagram of the external structure of the implantation catheter mechanism of the present invention; Figure 4 This is a cross-sectional view of the implantable catheter mechanism of the present invention. Figure 5 This is an enlarged schematic diagram of the external structure at point A of the present invention; Figure 6 This is an enlarged structural diagram of section B of the present invention; Figure 7 This is a schematic diagram of the external structure of the connector fixing mechanism of the present invention. In the diagram: 1. Laser source body; 2. Implantation catheter mechanism; 21. Fiber optic connector; 22. Fiber optic body; 23. Rubber sheath; 24. Proximal catheter; 25. Distal catheter; 3. Connector fixing mechanism; 31. Rotation limit plate; 32. Limiting strip; 33. Bidirectional threaded rod; 34. Clamping block; 35. Handle; 4. Output interface. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1:

[0017] Please see Figure 1-6 The present invention provides a technical solution: a fiber optic guided glaucoma implantation catheter, including a laser light source body 1, an output interface 4 fixedly installed on the right side of the laser light source body 1, an implantation catheter mechanism 2 provided on the right side of the output interface 4, and a connector fixing mechanism 3 provided on the right side of the laser light source body 1.

[0018] Furthermore, the implantation catheter mechanism 2 includes an optical fiber connector 21, which is located inside the output interface 4. An optical fiber body 22 is located on the right side of the optical fiber connector 21. A rubber sheath 23, a proximal catheter 24, and a distal catheter 25 are located outside the optical fiber body 22 to facilitate laser guidance of the catheter through the implantation catheter mechanism 2.

[0019] Furthermore, the proximal conduit 24 is located on the right side of the rubber sheath 23, the distal conduit 25 is located on the right side of the proximal conduit 24, and the left side of the proximal conduit 24 is fixedly installed on the right side of the rubber sheath 23, which facilitates the protection of the optical fiber body 22.

[0020] Furthermore, the optical fiber body 22 is made of plastic. The optical fiber body 22 has a diameter change in the area inside the proximal conduit 24 and the distal conduit 25. The diameter change in the optical fiber body 22 changes from a large diameter to a small diameter, which facilitates the delivery of laser light to form a high-brightness spot.

[0021] Furthermore, the distal end of the distal catheter 25 is provided with a smooth round head, and the inside of the smooth round head of the distal catheter 25 is provided with a through hole connecting the inside and outside of the tube. The inner wall of the distal catheter 25 is provided with dense small holes, and the direction of the dense small holes on the inner wall of the distal catheter 25 is staggered in 360 degrees. The distal catheter 25 is a transparent polymer tube that can be implanted into the human body, so that the laser output from the laser source can be transmitted through the optical fiber body 22 to the smooth round head of the distal catheter 25 to form a bright spot. Example 2:

[0022] Please see Figure 7Furthermore, in conjunction with Embodiment 1, the connector fixing mechanism 3 includes a rotation limiting plate 31, which is fixedly installed on the right side of the laser source body 1. A limiting strip 32 is fixedly installed on the inner side of the rotation limiting plate 31. A bidirectional threaded rod 33 is rotatably installed inside the rotation limiting plate 31. A clamping block 34 is installed on the outer thread of the bidirectional threaded rod 33. A handle 35 is fixedly installed on the front side of the bidirectional threaded rod 33, which facilitates fixing the fiber optic connector 21 through the connector fixing mechanism 3.

[0023] Furthermore, grooves are provided at the corresponding positions of the clamping block 34 and the limiting strip 32, and the limiting strip 32 is slidably installed inside the grooves provided inside the clamping block 34, which improves stability.

[0024] In actual operation, when this device is used, the fiber optic connector 21 is inserted into the output interface 4, and the handle 35 is rotated to rotate the bidirectional threaded rod 33. The clamp 34 moves inward under the restriction of the limiting strip 32 to fix the fiber optic connector 21. Through an internal surgical approach, a section of the trabecular meshwork and the outer wall of the Schlem's tube are removed using a KDB knife. The distal duct 25 is inserted into the Schlem's tube from one end of the incision in the anterior chamber, and then, under laser illumination guidance, it travels around the Schlem's tube and exits from the other end of the incision, clearing the collapsed Schlem's tube 360 ​​degrees. Then, a special pair of scissors is used to cut the proximal duct 24 outside the eye (without cutting the internal fiber optic body 22), and the fiber optic body 22 is removed. Subsequently, the distal duct 25 is cut at the entrance of the Schlem's tube using intraocular scissors, and then the excess external duct is removed. The distal end of the distal catheter 25 is then cut off at the Schlem's duct exit point using intraocular scissors. The position of the cut end of the distal catheter 25 within the Schlem's duct and anterior chamber is adjusted so that both ends of the distal catheter 25 protrude approximately 0.5-1 mm from the Schlem's duct incision and remain in the anterior chamber. This method provides 360-degree support and expansion of the Schlem's duct, allowing aqueous humor to enter the distal catheter 25 from the anterior chamber side, drain through the densely packed small holes on the inner wall of the distal catheter, and flow into the Schlem's duct, collecting in the superior vena cava, thus achieving internal drainage. This procedure can also be performed by cutting the distal catheter 25 at any angle during Schlem's duct implantation, and the angle of implantation can be determined by the surgeon.

[0025] After being connected to the output interface 4 via the fiber optic connector 21, the laser can be transmitted to the inside of the fiber optic body 22 through the fiber optic connector 21. The laser source can transmit visible red laser, and the laser output from the laser fiber can be continuous laser or pulsed laser.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A fiber-optic guided glaucoma implantation catheter, comprising a laser source body (1), characterized in that: An output interface (4) is fixedly installed on the right side of the laser source body (1), an implantation catheter mechanism (2) is provided on the right side of the output interface (4), and a connector fixing mechanism (3) is provided on the right side of the laser source body (1).

2. The fiber-optic guided glaucoma implantation catheter according to claim 1, characterized in that: The implantation catheter mechanism (2) includes an optical fiber connector (21), which is located inside the output interface (4). An optical fiber body (22) is located on the right side of the optical fiber connector (21), and a rubber sheath (23), a proximal catheter (24), and a distal catheter (25) are located outside the optical fiber body (22).

3. The fiber-optic guided glaucoma implantation catheter according to claim 2, characterized in that: The proximal conduit (24) is located on the right side of the rubber sheath (23), the distal conduit (25) is located on the right side of the proximal conduit (24), and the left side of the proximal conduit (24) is fixedly installed with the right side of the rubber sheath (23).

4. The fiber-optic guided glaucoma implantation catheter according to claim 2, characterized in that: The optical fiber body (22) is made of plastic. The optical fiber body (22) has a variable diameter in the area inside the proximal conduit (24) and the distal conduit (25), and the variable diameter of the optical fiber body (22) changes from a large diameter to a small diameter.

5. The fiber-optic guided glaucoma implantation catheter according to claim 2, characterized in that: The distal catheter (25) has a smooth round head at its end, and the smooth round head at the end of the distal catheter (25) has a through hole connecting the inside and outside of the tube. The inner wall of the distal catheter (25) has dense small holes, and the direction of the dense small holes on the inner wall of the distal catheter (25) is staggered at 360 degrees. The distal catheter (25) is ≥42 mm in length and is a transparent polymer tube that can be implanted in the human body.

6. The fiber-optic guided glaucoma implantation catheter according to claim 1, characterized in that: The joint fixing mechanism (3) includes a rotating limiting plate (31), which is fixedly installed on the right side of the laser source body (1). A limiting strip (32) is fixedly installed on the inner side of the rotating limiting plate (31). A bidirectional threaded rod (33) is rotatably installed inside the rotating limiting plate (31). A clamping block (34) is installed on the outer thread of the bidirectional threaded rod (33). A handle (35) is fixedly installed on the front side of the bidirectional threaded rod (33).

7. The fiber-optic guided glaucoma implantation catheter according to claim 6, characterized in that: The clamping block (34) and the limiting strip (32) are provided with grooves at their corresponding positions, and the limiting strip (32) is slidably installed inside the grooves provided inside the clamping block (34).

Images