Lens snare

Abstract

The utility model discloses a crystalline lens snare which comprises a suction tube and an infusion tube, one end of the suction tube is communicated in a ring shape and is provided with a suction hole, one end of the infusion tube is communicated in a ring shape and is provided with an infusion hole, the suction tube and the infusion tube are connected to form a snare body, and the snare body is provided with anti-slip lines. The utility model can solve the problems that the infection risk is increased and the smooth lens snare is easy to fail in nucleus delivery because the existing lens snare and the ophthalmology injection-suction double-cavity tube need to be repeatedly operated for many times.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a lens snare. Background Art

[0002] Currently, the mainstream surgical treatments for cataracts are phacoemulsification and extracapsular cataract extraction. For primary care hospitals lacking phacoemulsification equipment and for cataract patients with a hard lens nucleus, extracapsular cataract extraction remains the preferred option.

[0003] Extracapsular cataract extraction involves tearing or cutting the anterior lens capsule and the central portion of the anterior capsule. The cloudy lens nucleus and cortex are then removed, leaving the posterior lens capsule intact. An intraocular lens is then implanted. During the procedure, a lens snare is used to deliver the lens nucleus, and the remaining cataractous cortex is then aspirated using a double-lumen ophthalmic injection and aspiration tube.

[0004] However, when performing extracapsular extraction surgery clinically, the lens snare and ophthalmic injection and suction double-lumen tube need to be operated repeatedly, which increases the risk of infection. The smooth lens snare can easily lead to failure of nucleus delivery during the process. Utility Model Content

[0005] The utility model aims to provide a lens snare to solve the technical problems in the prior art that the lens snare and the ophthalmic injection and suction double-lumen tube need to be operated repeatedly, which increases the risk of infection, and the smooth lens snare is prone to failure in nucleus delivery.

[0006] The technical solutions adopted to solve the above technical problems are:

[0007] The utility model discloses a lens snare, which comprises a suction tube and an irrigation tube. One end of the suction tube is connected in a ring shape and is provided with a suction hole. One end of the irrigation tube is connected in a ring shape and is provided with an irrigation hole. The suction tube and the irrigation tube are connected to form a snare body, and the snare body is provided with anti-slip grooves.

[0008] The present invention has at least the following beneficial effects: one end of the suction tube is annular and provided with a suction hole, enabling extraction of the cataract cortex. One end of the irrigation tube is annular and provided with an irrigation hole, enabling irrigation of liquid to maintain the anterior chamber. The suction tube and irrigation tube are connected to form a snare body, allowing the surgeon to directly use the snare body to perform the nucleus removal operation. Because the snare body is provided with both suction and irrigation holes, it can also be used as a double-lumen ophthalmic irrigation and aspiration tube, reducing the number of times instruments need to be inserted and removed during surgery and minimizing the risk of surgical infection.

[0009] The snare body is provided with anti-slip grooves to increase the friction between the snare body and the bottom of the nucleus, so as to facilitate the doctor's nucleus removal operation.

[0010] As a further improvement of the above technical solution, the inner wall of the suction tube is connected to the outer wall of the perfusion tube.

[0011] With the above arrangement, the suction hole is located at the outer end of the snare body, so that the suction hole can accurately remove the cataract cortex. The irrigation tube is located at the inner end of the snare body, which can smoothly irrigate the anterior chamber with liquid.

[0012] As a further improvement of the above technical solution, the suction hole is provided with one and the opening is facing upward, and the suction hole is located at the end of the suction pipe away from the pipe opening.

[0013] Through the above settings, the suction hole can be precisely controlled to align with the patient's cataract cortex, thereby improving the accuracy of suction removal.

[0014] As a further improvement of the above technical solution, the perfusion holes are provided in plurality and their openings face upward, and the plurality of perfusion holes are symmetrically arranged with respect to the suction hole.

[0015] Through the above arrangement, multiple perfusion holes can improve the perfusion efficiency and balance the various perfusion directions of the perfusion liquid.

[0016] As a further improvement of the above technical solution, a plurality of anti-slip grooves are provided and arranged on the suction pipe, and the plurality of anti-slip grooves are symmetrically arranged about the suction hole.

[0017] Through the above arrangement, the multiple anti-slip grooves can further increase the friction between the snare body and the bottom of the core. The multiple anti-slip grooves are symmetrically arranged about the suction hole so that the multiple anti-slip grooves and the multiple perfusion holes are arranged in the same manner.

[0018] As a further improvement of the above technical solution, the plurality of anti-slip grooves and the plurality of injection holes are arranged in a staggered manner.

[0019] The above arrangement avoids alignment of multiple anti-slip grooves and multiple perfusion holes, which increases the difficulty of manufacturing the lens snare.

[0020] As a further improvement of the above technical solution, two perfusion holes are provided and are located at one end of the perfusion tube close to the suction hole.

[0021] Through the above arrangement, the two perfusion holes arranged close to the suction hole can allow the perfusion liquid to flush the nucleus outwards, making it easier to perform extracapsular cataract extraction.

[0022] As a further improvement of the above technical solution, the nozzle of the suction tube is connected to a connecting tube, and the connecting tube is connected to a first connector for connecting a syringe.

[0023] Through the above setting, the connecting tube can change the direction and position of the doctor holding the syringe, making it easier for the doctor to perform suction operations. The first connector is used to firmly connect the syringe and the connecting tube, and the suction hole is given negative pressure by pulling open the piston of the syringe.

[0024] As a further improvement of the above technical solution, one end of the perfusion tube away from the suction hole is connected to a second connector for connecting to another syringe.

[0025] Through the above arrangement, the second connector is used to firmly connect the perfusion tube and another syringe, and the perfusion liquid is input by pushing the other syringe.

[0026] As a further improvement of the above technical solution, the snare body is made of metal.

[0027] Through the above arrangement, the snare body can be integrally formed, simplifying the manufacturing process of the snare body, and the metal snare body can be recycled after cleaning and disinfection, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the overall structure of the lens snare provided by an embodiment of the present utility model;

[0030] Figure 2 It is a structural schematic diagram of one ring-shaped end of the lens snare provided by an embodiment of the present utility model.

[0031] The following are marked in the accompanying drawings:

[0032] 100, lens snare;

[0033] 200, suction pipe; 210, suction hole; 220, first branch pipe; 230, first main pipe; 240, first pipe opening;

[0034] 300, perfusion pipe; 310, perfusion hole; 320, second branch pipe; 330, second main pipe; 340, second pipe opening;

[0035] 400, anti-slip pattern;

[0036] 500, first connector;

[0037] 600, connecting pipe;

[0038] 700. Second connector. DETAILED DESCRIPTION

[0039] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0041] In the description of this utility model, if the word "several" or "several" is used, it means one or more, and "more" means two or more. "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the words "first," "second," and "third" is only for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] Reference Figure 1 and Figure 2 , several embodiments of the lens snare of the present invention are given below.

[0044] like Figure 1 and Figure 2 As shown, the lens snare 100 according to the embodiment of the present invention includes a suction tube 200 and an irrigation tube 300 .

[0045] It is understood that the suction tube 200 is provided with a suction hole 210 to remove the cataract cortex of the patient through the suction hole 210. The irrigation tube 300 is provided with an irrigation hole 310 to irrigate the anterior chamber with liquid through the irrigation hole 310, such as Figure 1 and Figure 2 shown.

[0046] It is understood that one end of the suction tube 200 is connected to a ring shape so that the shape of the one end of the suction tube 200 is a snare shape, and the suction hole 210 is provided at the ring end of the suction tube 200. One end of the perfusion tube 300 is connected to a ring shape so that the shape of the one end of the perfusion tube 300 is a snare shape, and the perfusion hole 310 is provided at the ring end of the perfusion tube 300. Figure 1 and Figure 2 The suction tube 200 and the irrigation tube 300 are connected to each other so that one end of the two rings is connected to form the snare body.

[0047] It is understandable that the snare body is provided with anti-slip grooves 400, such as Figure 1 and Figure 2 As shown, the anti-slip groove 400 is used to increase the friction between the snare body and the bottom of the nucleus when delivering the lens nucleus, thereby preventing the nucleus from shifting and causing failure of delivery.

[0048] With such a configuration, the doctor can perform the nucleus delivery surgery through the formed snare body. After the lens nucleus is delivered, since the suction hole 210 and the irrigation hole 310 are both provided on the snare body, the doctor can remove the cataract cortex through the suction hole 210 and can also irrigation liquid through the irrigation hole 310 to maintain the anterior chamber. The lens snare 100 combines the functions of nucleus delivery, suction and irrigation into one, avoiding the need to repeatedly operate the snare and the ophthalmic irrigation and suction double-lumen tube, reducing the number of times the instrument is entered and exited during the extracapsular cataract extraction surgery, and reducing the risk of infection during the surgery.

[0049] It is understandable that doctors do not need to repeatedly replace the snare and the ophthalmic injection and suction double-lumen tube when performing extracapsular cataract extraction surgery, which reduces the difficulty of the operation and allows novice doctors to get started and perform surgery more quickly with the lens snare 100.

[0050] In some embodiments, the suction tube 200 is connected to the irrigation tube 300 in an upper and lower connection. However, when performing the nuclear delivery operation, it is difficult for the doctor to see the positions of the suction hole 210 and the irrigation hole 310 at the same time, which is not conducive to the nuclear delivery operation.

[0051] In other embodiments, the irrigation tube 300 is disposed around the suction tube 200, that is, the inner wall of the irrigation tube 300 is connected to the outer wall of the suction tube 200. However, since the suction hole 210 is located at the inner end of the snare body, it is difficult to accurately remove the patient's cataract cortex through the suction hole 210.

[0052] In this embodiment, the suction tube 200 is arranged around the perfusion tube 300, that is, the inner wall of the suction tube 200 is connected to the outer wall of the perfusion tube 300. Figure 1 and Figure 2At this time, the suction hole 210 is located at the outer end of the snare body, and the suction hole 210 can accurately remove the cataract cortex, and the irrigation hole 310 is located at the inner end of the snare body, and can smoothly irrigation liquid forward.

[0053] It is understandable that there may be a plurality of suction holes 210. When there are a plurality of suction holes 210, the plurality of suction holes 210 may be spaced apart and laid on the annular end of the suction tube 200 to accelerate the efficiency of suctioning the cataract cortex.

[0054] In this embodiment, the suction hole 210 is provided with a Figure 1 and Figure 2 As shown, the snare body can be precisely manipulated to align the suction hole 210 with the cataract cortex, thereby improving the accuracy of suction removal.

[0055] It is understandable that the suction hole 210 is opened upwards to facilitate checking the position of the suction hole 210 and accurately moving and aligning the suction hole 210 with the cataract cortex.

[0056] It is understood that the suction pipe 200 is provided with a first nozzle 240, and the suction hole 210 is located at an end of the suction pipe 200 away from the first nozzle 240. Figure 1 As shown, the suction hole 210 for input and the first tube port 240 for output are arranged opposite to each other, which makes it easier for doctors to use the lens snare 100 to suction the cataract cortex.

[0057] In some embodiments, there is one perfusion hole 310. However, perfusion of the liquid takes a long time, has low perfusion efficiency, and a single perfusion direction may cause uneven force on the lens nucleus.

[0058] It is understandable that a plurality of perfusion holes 310 are provided and are evenly spaced apart to improve perfusion efficiency and balance the perfusion directions of the perfusion liquid.

[0059] It can be understood that the multiple perfusion holes 310 are symmetrically arranged with respect to the suction hole 210 to further maintain perfusion balance.

[0060] In some embodiments, six perfusion holes 310 may be provided to improve perfusion efficiency in multiple directions. However, during the nucleus delivery process, when perfusion fluid is injected into the six evenly spaced perfusion holes 310, the upwardly injected perfusion fluid will push the nucleus upward.

[0061] In this embodiment, two perfusion holes 310 are provided and are located at one end of the perfusion tube 300 close to the suction hole 210. Figure 1 and Figure 2 As shown, during the process of nucleus delivery, the injected irrigation fluid can flush the nucleus outwards, making it easier to perform extracapsular cataract extraction.

[0062] It is understandable that the perfusion tube 300 is provided with a second nozzle 340, such as Figure 1 As shown, the irrigation hole 310 for outputting irrigation liquid is arranged opposite to the second tube port 340 for inputting irrigation liquid, which is convenient for the doctor to use the lens snare 100 to irrigate the anterior chamber.

[0063] In this embodiment, the suction pipe 200 extends in the front-to-back direction, and the annular end of the suction pipe 200 is the front end, that is, the suction hole 210 is provided at the front end of the suction pipe 200. The suction pipe 200 includes two first branch pipes 220 located at the front end and two first main pipes 230 located at the rear end. The two first branch pipes 220 are arranged symmetrically, and the front ends of the two first branch pipes 220 are connected by circular arcs. The suction hole 210 is provided at the connection point of the front ends of the two first branch pipes 220. The rear ends of the two first branch pipes 220 are respectively connected to the front ends of the two first main pipes 230, and the rear ends of the two first main pipes 230 are connected to each other. The first pipe opening 240 is provided at the rear ends of the two first main pipes 230 after they are connected. Figure 1 shown.

[0064] Similarly, the perfusion tube 300 extends in the front-to-back direction, and the annular end of the perfusion tube 300 is the front end, that is, the perfusion hole 310 is located at the front end of the perfusion tube 300. The perfusion tube 300 includes two second branch tubes 320 located at the front end and a second main tube 330 located at the rear end. The two second branch tubes 320 are arranged symmetrically, and the front ends of the two second branch tubes 320 are connected by circular arcs. The two perfusion holes 310 are symmetrical and respectively located in the two second branch tubes 320. The rear ends of the two second branch tubes 320 are connected to each other and to the front end of the second main tube 330. The second pipe opening 340 is located at the rear end of the second main tube 330. Figure 1 shown.

[0065] It can be understood that the inner wall of the suction tube 200 is connected to the outer wall of the perfusion tube 300, which is actually the inner wall of the two first branch tubes 220 connected to the outer wall of the two second branch tubes 320, and the left wall and right wall of a second main tube 330 are respectively connected to the wall of the two first main tubes 230 facing the second main tube 330.

[0066] It is understood that the rear end of the first manifold 230 is tilted so that the rear end of the first manifold 230 and the rear end of the second manifold 330 are arranged at an angle to avoid interference between the first pipe opening 240 and the second pipe opening 340. In this embodiment, the two first manifolds 230 are connected from the tilted section.

[0067] It is understandable that the included angle between the first main pipe 230 and the second main pipe 330 is an acute angle, so that the straight section and the inclined section of the first main pipe 230 are obtuse angles, which facilitates the circulation of the cataract cortex and reduces the circulation resistance of the cataract cortex.

[0068] It is understandable that there can be one or more anti-slip grooves 400. In order to increase the friction between the snare body and the core bottom, a plurality of anti-slip grooves 400 are provided.

[0069] It will be appreciated that, because the suction tube 200 is located outside the snare body, the multiple anti-slip grooves 400 are spaced apart on the suction tube 200. The area of ​​the suction tube 200 used for nucleus delivery is the two first branches 220, which are bilaterally symmetrical. Therefore, the multiple anti-slip grooves 400 are evenly and symmetrically arranged on the two first branches 220. Because the suction hole 210 is located at the connection point between the two first branches 220, the multiple anti-slip grooves 400 are symmetrical about the suction hole 210.

[0070] It is understandable that the multiple anti-slip grooves 400 and the multiple perfusion holes 310 are staggered in the front-to-back direction to avoid the anti-slip grooves 400 located on the first branch 220 and the perfusion holes 310 located on the second branch 320 being aligned left and right, which increases the manufacturing difficulty of the snare body.

[0071] In this embodiment, there are eight anti-skid grooves 400, each first branch pipe 220 is provided with four anti-skid grooves 400, and the two perfusion holes 310 are located at the front ends of the eight anti-skid grooves 400 to achieve staggering. Figure 1 and Figure 2 shown.

[0072] It is understandable that the first pipe opening 240 is connected to a connecting pipe 600, such as Figure 1 The connecting tube 600 can change the direction and position of the doctor holding the syringe, so as to facilitate the doctor's suction operation and avoid the angled arrangement of the first nozzle 240 and the second nozzle 340, which causes the doctor to need to operate with both hands at an angle during the operation. The connecting tube 600 is connected to the first connector 500, as shown in FIG. Figure 1 As shown, the first connector 500 can be connected to a syringe for suction. When in use, the doctor's hand holds and pulls the piston of the syringe to generate negative pressure in the suction hole 210, thereby sucking the cataract cortex.

[0073] In this embodiment, the connecting tube 600 is a silicone hose. Silicone hoses are commonly used in medical supplies. If the connecting tube 600 is not of the appropriate length, other medical supplies can be used as the connecting tube 600. The appropriate length can be cut according to the usage requirements and connected to the suction tube 200 and the first connector 500. This allows for quick replacement and allows the doctor to adjust the snare body to a comfortable position for suction.

[0074] It is understandable that the second nozzle 340 is connected to the second connector 700, such as Figure 1As shown, the second connector 700 can be connected to another syringe for perfusion. When in use, the doctor's other hand holds and pushes the piston of another syringe, thereby making the perfusion liquid in the other syringe output in the anterior chamber from the perfusion hole 310.

[0075] In this embodiment, the suction tube 200 and the irrigation tube 300 are both made of metal such as stainless steel and aluminum, so that the lens snare 100 can be recycled after cleaning and disinfection, saving medical and surgical costs.

[0076] It is understandable that the snare body of the metal part can be integrally formed, which makes the production of the lens snare 100 easier and the manufacturing precision of the snare body is high.

[0077] Furthermore, the first connector 500 is a metal part to strengthen the connection strength between the first connector 500 and the syringe. The second connector 700 is a metal part and can be directly integrated with the perfusion tube 300, saving installation steps.

[0078] In this embodiment, the suction tube 200 , the perfusion tube 300 , the first connector 500 and the second connector 700 are made of stainless steel, which has the advantages of being durable, hygienic and environmentally friendly.

[0079] It is understandable that the lens snare 100 is curved in an arc shape. Figure 2 That is, the middle portion of the upper side of the snare body with the suction hole 210 is concave, so that the snare body is in an arc shape, which is more conducive to delivering the lens nucleus.

[0080] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A lens snare, characterized in that: It includes a suction tube and an irrigation tube. One end of the suction tube is connected in a ring shape and is provided with a suction hole. One end of the irrigation tube is connected in a ring shape and is provided with an irrigation hole. The suction tube and the irrigation tube are connected to form a snare body. The snare body is provided with anti-slip grooves.

2. The lens snare according to claim 1, wherein: The inner side wall of the suction tube is connected to the outer side wall of the perfusion tube.

3. The lens snare according to claim 2, wherein: The suction hole is provided with one and opens upwards, and is located at an end of the suction pipe away from the pipe opening.

4. The lens snare according to claim 3, wherein: The perfusion holes are provided in plurality and open upwards, and the plurality of perfusion holes are symmetrically arranged with respect to the suction hole.

5. The lens snare according to claim 4, wherein: The anti-slip grooves are provided in plurality and are arranged on the suction pipe, and the plurality of anti-slip grooves are symmetrically arranged about the suction hole.

6. The lens snare according to claim 5, characterized in that The plurality of anti-slip grooves and the plurality of injection holes are arranged in a staggered manner.

7. The lens snare according to claim 5, characterized in that The perfusion holes are provided with two and are located at one end of the perfusion tube close to the suction hole.

8. The lens snare according to claim 7, wherein: The tube mouth of the suction tube is connected to a connecting tube, and the connecting tube is connected to a first connecting head for connecting a syringe.

9. The lens snare according to claim 8, wherein: One end of the perfusion tube away from the suction hole is connected to a second connector for connecting another syringe.

10. The lens snare according to claim 1, wherein: The snare body is a metal part.

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