A split aqueous humor drainage device

Abstract

The present invention relates to the field of medical device technology, and more specifically, to a split-type aqueous humor drainage device. The device comprises a puncture needle, a drainage tube, and a throttling structure. The puncture needle has a needle tip that passes through the lumen of the drainage tube, with its tip extending out of the tube to facilitate puncture. The throttling structure is provided separately from the drainage tube. During surgery, a medical professional places the drainage tube over the needle tip and performs a puncture at a predetermined location. The professional then inserts one end of the drainage tube into the predetermined location along the needle tip. The needle is then removed, causing aqueous humor to flow out of the drainage tube from the predetermined location. The throttling structure is then immediately connected to the drainage tube, and the throttling structure throttles the aqueous humor flowing out of the drainage tube to control the flow rate. Since the throttling structure is used alone, the medical professional does not need to control the aqueous humor flow rate, which is less susceptible to human factors and results in a relatively stable aqueous humor flow rate. Furthermore, the medical professional's operation is simplified, making the aqueous humor drainage procedure more efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a split-type aqueous humor drainage device. Background Art

[0002] The principle of glaucoma treatment is to reduce the patient's intraocular pressure. The main treatment methods include eye drops, oral anti-ocular pressure drugs or surgical treatment.

[0003] Surgical treatments for glaucoma use a variety of techniques, all of which aim to reduce intraocular pressure by forming an artificial channel for the outflow of aqueous humor to reduce the resistance to the outflow of aqueous humor. For example, patent document CN209996599U discloses a multifunctional glaucoma aqueous humor drainage device, which includes a syringe, a drainage tube is provided on one side of the syringe, the drainage tube is connected to the syringe through a connector, and a drainage guide is provided at one end of the drainage tube relative to the connector, a connecting tube is provided at the middle position of the drainage tube, a filter is provided inside the connecting tube, a silicone block is provided on the outside of the drainage tube near the drainage guide, a rubber sleeve is provided inside the silicone block, and a limit tube is provided on one side of the silicone block at the external position of the drainage tube, and a card slot matching the drainage tube is provided inside the rubber sleeve.

[0004] During use, after the position of the silicone block is determined, the syringe can be pulled out, and the syringe can draw out the aqueous humor inside the patient's eye through the drainage guide head. During the aqueous humor extraction process, medical staff can squeeze the silicone block to reduce the cross-sectional area of ​​the drainage tube, and then control the flow rate inside the drainage tube.

[0005] However, when operating the syringe, medical staff need to manually squeeze the silicone block at the same time, and manual control of the aqueous humor flow rate is not accurate enough, resulting in the inability to well control the aqueous humor flow rate during the drainage process, and increasing the operation of medical staff, making the operation cumbersome. Summary of the Invention

[0006] The present invention provides a split-type aqueous humor drainage device to solve the problem that the glaucoma aqueous humor drainage device in the prior art cannot well control the flow rate of the aqueous humor during the drainage process.

[0007] The technical solution of the present invention is:

[0008] A split-type aqueous humor drainage device comprises: a puncture needle, a drainage tube and a throttling structure, wherein the needle head of the puncture needle passes through the lumen of the drainage tube, and its tip extends out of the drainage tube to be suitable for puncture; the throttling structure is separately arranged from the drainage tube and is suitable for being connected to the drainage tube during drainage to throttle the aqueous humor flowing out of the drainage tube and control the flow rate of the aqueous humor.

[0009] Preferably, the throttling structure includes: a first throttling member, suitable for being connected to the drainage tube during drainage, a first through hole being provided on the first throttling member, an elastic membrane being provided inside the first through hole, the elastic membrane being suitable for controlling the flow rate of aqueous humor, and the aqueous humor flows out through the drainage tube and the first through hole in sequence during drainage.

[0010] Preferably, the first throttling member is a tubular structure.

[0011] Preferably, a limiting structure is further provided on the first throttling member, and the position of the first throttling member is limited by the limiting structure.

[0012] Preferably, the limiting structure includes: a positioning member, the positioning member is connected to the first throttling member, and a suture hole is further provided on the positioning member, and the position of the first throttling member is limited by the suture hole during drainage.

[0013] Preferably, at least two positioning members are evenly distributed along the circumference of the first throttling member.

[0014] Preferably, the throttling structure further includes: a second throttling member, which is separately arranged from the first throttling member and is suitable for being connected to the first throttling member during drainage to throttle the aqueous humor flowing through the first through hole and control the flow rate of the aqueous humor.

[0015] Preferably, the first throttling member has a smaller rigidity than the drainage tube, and the shape of the first through hole changes under the action of the second throttling member.

[0016] Preferably, the second throttle member includes: a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm are connected, and when the first clamp arm, the second clamp arm and the first throttle member are connected, a gap suitable for clamping the first throttle member is formed between the first clamp arm and the second clamp arm.

[0017] Preferably, a plurality of the second throttling members of different specifications are provided, and the gaps formed by the second throttling members of different specifications are different, so as to achieve different throttling effects.

[0018] The technical solution of the present invention has the following advantages:

[0019] 1. The split-type aqueous humor drainage device of the present invention comprises: a puncture needle, a drainage tube, and a throttling structure. The needle head of the puncture needle passes through the lumen of the drainage tube, and its tip extends out of the drainage tube to be suitable for puncture. The throttling structure is provided separately from the drainage tube and is suitable for being connected to the drainage tube during drainage to throttle the aqueous humor flowing out of the drainage tube and control the flow rate of the aqueous humor.

[0020] During the operation, the medical staff puts the drainage tube on the needle of the puncture needle, then punctures the predetermined position, and then inserts one end of the drainage tube into the predetermined position along the needle, and then pulls out the needle. The aqueous humor flows out from the predetermined position through the drainage tube, and then the throttling structure is immediately connected to the drainage tube. The throttling structure is used to throttle the aqueous humor flowing out of the drainage tube to control the flow rate of the aqueous humor.

[0021] During the drainage process, throttling is only performed through the throttling structure. Medical staff do not need to control the aqueous humor flow rate. It is less affected by human factors, and the aqueous humor flow rate is relatively stable. Moreover, it simplifies the operation of medical staff and makes aqueous humor drainage more efficient.

[0022] 2. The split-type aqueous humor drainage device of the present invention, the throttling structure also includes: a second throttling member, which is separately arranged from the first throttling member and is suitable for being connected to the first throttling member during drainage to throttle the aqueous humor flowing through the first through hole and control the flow rate of the aqueous humor.

[0023] Moreover, a plurality of the second throttling members of different specifications are provided, and the gaps formed by the second throttling members of different specifications are different, so as to achieve different throttling effects.

[0024] In the present invention, "primary throttling" is achieved by the first throttling member, and "secondary throttling" is achieved by the second throttling member. The throttling effect of the primary throttling varies depending on the patient's intraocular pressure. Without secondary throttling, it will be difficult to achieve the desired throttling effect.

[0025] If the initial throttling fails to achieve the desired throttling effect, a secondary throttling is performed. During the secondary throttling, a second throttling element with a larger gap can be selected first, and then gradually replaced with a second throttling element with a smaller gap to achieve the desired throttling effect. Different specifications of the second throttling element form different gaps, which also facilitates medical personnel to select the appropriate second throttling element based on the gap size.

[0026] In the present invention, the second throttle member is separately provided from the first throttle member, so that the second throttle member will not affect the preceding operation, and the second throttle member is used only when it is needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1is a schematic diagram of the split aqueous humor drainage device of the present invention when in use;

[0029] Figure 2 for Figure 1 a schematic diagram of an exploded view of the structure shown;

[0030] Figure 3 Schematic diagram of the puncture needle and drainage tube of the present invention;

[0031] Figure 4 This is one embodiment of the first throttle member of the present invention;

[0032] Figure 5 This is the second embodiment of the first throttle member of the present invention;

[0033] Figure 6 This is one embodiment of the second throttle member of the present invention;

[0034] Figure 7 This is the second embodiment of the second throttle member of the present invention.

[0035] Description of reference numerals:

[0036] 1-puncture needle; 2-needle; 3-drainage tube; 4-first throttle member; 5-first through hole; 6-elastic membrane; 7-positioning member; 8-suture hole; 9-second throttle member; 10-first clamping arm; 11-second clamping arm; 12-gap. DETAILED DESCRIPTION

[0037] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] The split aqueous humor drainage device of this embodiment is as follows Figure 1-Figure 7 As shown, the device comprises a puncture needle 1, a drainage tube 3, and a throttling mechanism. The needle tip 2 of the puncture needle 1 passes through the lumen of the drainage tube 3, with its tip extending out of the tube 3 for puncture. The throttling mechanism is separate from the drainage tube 3 and is adapted to be connected to the tube 3 during drainage to throttle the aqueous humor flowing out of the drainage tube 3 and control the flow rate of the aqueous humor. Specifically, the end of the drainage tube 3 used for puncture has an elliptical bevel structure to facilitate puncture.

[0042] During the operation, the medical staff puts the drainage tube 3 on the needle 2 of the puncture needle 1. Figure 3 As shown, a puncture is then performed at a predetermined position, and then one end of the drainage tube 3 is inserted into the predetermined position along the needle 2. The needle 2 is then pulled out, and the aqueous humor flows out from the predetermined position through the drainage tube 3. The throttling structure is then immediately connected to the drainage tube 3, and the aqueous humor flowing out of the drainage tube 3 is throttled by the throttling structure to control the flow rate of the aqueous humor.

[0043] During the drainage process, throttling is only performed through the throttling structure. Medical staff do not need to control the aqueous humor flow rate. It is less affected by human factors, and the aqueous humor flow rate is relatively stable. Moreover, it simplifies the operation of medical staff and makes aqueous humor drainage more efficient.

[0044] The throttling structure includes a first throttling member 4 adapted to connect to the drainage tube 3 during drainage. The first throttling member 4 is provided with a first through-hole 5, within which an elastic membrane 6 is disposed. The elastic membrane 6 is adapted to control the flow rate of the aqueous humor. During drainage, the aqueous humor flows sequentially through the drainage tube 3 and the first through-hole 5. It should be noted that the elastic membrane 6 in this embodiment is a petal-shaped structure. One portion of the elastic membrane 6 is connected to the inner wall of the first through-hole 5, while the remaining portion is in close proximity to the inner wall of the first through-hole 5 and is in a free state. During drainage, the elastic membrane 6 deforms and opens under pressure.

[0045] The elastic membrane 6 can be adaptively adjusted during the aqueous humor drainage process. For patients with high intraocular pressure, the elastic membrane 6 is subjected to greater pressure and opens to a greater extent. During the drainage process, as the intraocular pressure decreases, the deformation of the elastic membrane 6 gradually decreases. Finally, when the intraocular pressure reaches the ideal range, the intraocular pressure is not sufficient to cause the elastic membrane 6 to open, and the elastic membrane 6 closes.

[0046] Specifically, if Figure 4 As shown, as the first embodiment of the first throttle member 4, the first throttle member 4 is a tubular structure, which is convenient for processing and manufacturing. It should be noted that the first throttle member 4 can also be of other external structures as long as it is ensured to be provided with a first through hole 5.

[0047] like Figure 5 As shown, a limiting structure is also provided on the first throttle member 4 to limit the position of the first throttle member 4. The limiting structure includes a positioning member 7 connected to the first throttle member 4 and provided with a suture hole 8. The position of the first throttle member 4 is limited by the suture hole 8 during drainage. The positioning member 7 is also convenient for medical staff to hold during surgery, making it easier for them to operate when suturing or connecting to the drainage tube 3.

[0048] Specifically, at least two positioning members 7 are evenly distributed around the circumference of the first throttle member 4. As a preferred embodiment, two symmetrically arranged positioning members 7 can be used.

[0049] Furthermore, the throttling structure further includes a second throttling member 9, which is provided separately from the first throttling member 4 and is adapted to be connected to the first throttling member 4 during drainage to throttle the aqueous humor flowing through the first through hole 5 and control the flow rate of the aqueous humor. The second throttling member 9 is provided separately from the first throttling member 4 so that the second throttling member 9 does not affect the previous operation and is only used when needed.

[0050] Furthermore, the first throttle member 4 and the second throttle member 9 are both made of bio-silicone, the rigidity of the first throttle member 4 is smaller than that of the drainage tube 3, and the shape of the first through hole 5 changes under the action of the second throttle member 9, and the aqueous humor flow rate is controlled according to different shape changes.

[0051] Specifically, the second throttle member 9 includes: a first clamping arm 10 and a second clamping arm 11. The first clamping arm 10 and the second clamping arm 11 are connected. When the first clamping arm 10 and the second clamping arm 11 are connected to the first throttle member 4, a gap 12 suitable for clamping the first throttle member 4 is formed between the first clamping arm 10 and the second clamping arm 11.

[0052] In this embodiment, "primary throttling" is achieved by the first throttling member 4, and "secondary throttling" is achieved by the second throttling member 9. The throttling effect of the primary throttling varies depending on the patient's intraocular pressure. Without secondary throttling, it will be difficult to achieve the desired throttling effect.

[0053] If the initial throttling fails to achieve the desired throttling effect, a secondary throttling is performed. During the secondary throttling, a second throttling member 9 with a larger gap 12 can be selected first, and then gradually replaced with a second throttling member 9 with a smaller gap 12, thereby achieving the desired throttling effect. The gaps 12 formed by the second throttling members 9 of different specifications vary in size, which also facilitates medical personnel to select the appropriate second throttling member 9 according to the size of the gap 12.

[0054] There are many ways to connect the first clamping arm 10 and the second clamping arm 11 , and three are provided in this embodiment.

[0055] like Figure 6 As shown, in the first embodiment, the first clamping arm 10 and the second clamping arm 11 are made of a material with good rigidity, that is, a "V"-shaped elastic clamp is formed.

[0056] like Figure 7 As shown, the second embodiment is: the first clamping arm 10 and the second clamping arm 11 are connected at one end by a flexible material, and at the other end by a clamping structure;

[0057] The third embodiment is: the first clamping arm 10 and the second clamping arm 11 are hinged at one end and connected at the other end through a clamping structure; the clamping structure in the above two embodiments can adopt the existing clamping structure, but it is necessary to ensure that they can be separated after clamping.

[0058] The split-type aqueous humor drainage device of this embodiment is provided with a plurality of second throttling members 9 of different specifications. The second throttling members 9 of different specifications form different gaps 12 to achieve different throttling effects.

[0059] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A split-type aqueous humor drainage device, characterized in that: include: A puncture needle (1) and a drainage tube (3), wherein the needle head (2) of the puncture needle (1) passes through the lumen of the drainage tube (3), and the tip thereof protrudes from the drainage tube (3) to be suitable for puncture; A throttling structure is provided separately from the drainage tube (3) and is suitable for being connected to the drainage tube (3) during drainage to throttle the aqueous humor flowing out of the drainage tube (3) and control the flow rate of the aqueous humor; The throttling structure includes: A first throttling member (4) is adapted to be connected to the drainage tube (3) during drainage, wherein the first throttling member (4) is provided with a first through hole (5), wherein an elastic membrane (6) is provided inside the first through hole (5), and wherein the elastic membrane (6) is adapted to control the flow rate of aqueous humor, and during drainage, the aqueous humor flows out through the drainage tube (3) and the first through hole (5) in sequence; The throttling structure further includes: A second throttling member (9) is provided separately from the first throttling member (4) and is adapted to be connected to the first throttling member (4) during drainage to throttle the aqueous humor flowing through the first through hole (5) and control the flow rate of the aqueous humor; The second throttling member (9) comprises: A first clamping arm (10) and a second clamping arm (11), wherein the first clamping arm (10) and the second clamping arm (11) are connected. When the first clamping arm (10) and the second clamping arm (11) are connected to the first throttling member (4), a gap (12) suitable for clamping the first throttling member (4) is formed between the first clamping arm (10) and the second clamping arm (11); a plurality of second throttling members (9) of different specifications are provided, and the gaps (12) formed by the second throttling members (9) of different specifications are different, so as to achieve different throttling effects; the first throttling member (4) and the second throttling member (9) are both made of bio-silicone.

2. The split-type aqueous humor drainage device according to claim 1, characterized in that: The first throttling member (4) is a tubular structure.

3. The split-type aqueous humor drainage device according to claim 1, characterized in that: A limiting structure is also provided on the first throttling member (4), and the position of the first throttling member (4) is limited by the limiting structure.

4. The split-type aqueous humor drainage device according to claim 3, characterized in that: The limiting structure includes: A positioning member (7), the positioning member (7) being connected to the first throttling member (4), and the positioning member (7) being further provided with a suture hole (8), for limiting the position of the first throttling member (4) during drainage.

5. The split-type aqueous humor drainage device according to claim 4, characterized in that: At least two of the positioning members (7) are evenly distributed along the circumference of the first throttling member (4).

6. The split-type aqueous humor drainage device according to claim 1, characterized in that: The first throttling member (4) has a smaller rigidity than the drainage tube (3), and the shape of the first through hole (5) changes under the action of the second throttling member (9).

Images