Conjunctival sac cyst extractor

Abstract

This utility model discloses a conjunctival cyst removal device, belonging to the field of medical technology. The device uses a needle locking structure on a plastic support to fix a steel needle. Operation is achieved through the plastic support and the pressing shell. Its small size makes it easy to grip, and single-handed operation helps stabilize the needle, preventing displacement and reducing damage to surrounding tissues. The steel needle on the plastic support pierces the rubber layer of the negative pressure tube, and the pressure inside the tube effectively suctions the cyst wall, resulting in a higher success rate. The device connects the cyst cavity to the negative pressure tube by piercing it with the steel needle. The pressure from the tube draws out the fluid from the cyst cavity. After the fluid is completely drained, suction continues until the cyst is under negative pressure, allowing the needle to adhere to the cyst wall. Removing the needle removes the cyst wall. The key to this operation is accurately locating the cyst wall and successfully aspirating it, minimizing damage and complications.

Description

Technical Field

[0001] This utility model relates to an extraction device, and more particularly to a conjunctival cyst extraction device, belonging to the field of medical technology. Background Technology

[0002] In clinical practice, conjunctival cysts are classified as congenital or acquired. Congenital cysts are more complex and generally require surgical treatment. Acquired cysts, also known as acquired cysts, are mostly implanted conjunctival epithelial cysts, which can be caused by surgery, trauma, inflammation, etc. They involve the proliferation of subconjunctival epithelial cells and often occur in the palpebral fissure and lower fornix conjunctiva. Treatment methods include aspiration, laser, intracystic injection of sclerosing agents, or surgical excision.

[0003] For example, CN217793146U discloses a device for fixing and removing cysts, which includes a bowl-shaped negative pressure chamber. The negative pressure chamber is connected to a catheter, and the other end of the catheter is connected to a negative pressure device. The negative pressure chamber is also connected to a puncture device. A puncture needle is provided at the bottom of the puncture device and leads into the negative pressure chamber. The catheter includes a main tube, one end of which is connected to the negative pressure device. The other end of the main tube branches into an air duct and a needle channel. The connection between the main tube, the air duct, and the needle channel is sealed to the outside, but the three are internally interconnected. The air port of the negative pressure device is sealed to the air duct port. The bottom of the puncture device is sealed to the port of the needle channel. The puncture needle leads into the negative pressure chamber through the needle channel. This device can pull the cyst out of the incision without directly clamping it with forceps, which can ensure the integrity of the cyst and prevent the fluid inside the cyst from flowing into the patient's body, greatly reducing the possibility of cyst rupture and avoiding the risk of cell dissemination due to extravasation of the cyst fluid.

[0004] Based on existing technology, when performing conjunctival cyst removal under slit lamp, we use a disposable syringe to remove the conjunctival cyst. However, this method has two drawbacks: firstly, it is difficult to pull back the syringe with one hand, which can lead to instability at the needle tip; secondly, the suction force is insufficient, causing the cyst wall to retract and making it difficult to remove the cyst wall.

[0005] Therefore, a conjunctival cyst removal device is needed to improve upon the above-mentioned shortcomings. Utility Model Content

[0006] The main purpose of this invention is to provide a conjunctival cyst removal device.

[0007] The objective of this utility model can be achieved by adopting the following technical solution:

[0008] A conjunctival cyst removal device, including a plastic support for positioning, with a steel needle locked inside the plastic support;

[0009] A pressing housing is telescopically installed on the other side of the plastic bracket. A negative pressure tube is installed inside the pressing housing, and a rubber layer is covered at one end of the shaft of the negative pressure tube.

[0010] The other end of the steel needle pierces the rubber layer and connects to the negative pressure tube;

[0011] The steel needle is fixedly connected to the plastic bracket by a needle locking structure.

[0012] Preferably, a limiting component is installed around one side of the outer ring of the plastic bracket, and a limiting housing is installed at the outer end of the plastic bracket. The limiting housing covers the limiting component to prevent it from falling off.

[0013] Preferably, the steel needles embedded in the plastic bracket are 10mm in length.

[0014] Preferably, the length of the plastic bracket is 60mm.

[0015] Preferably, the limiting housing and the limiting member are fitted together, the pressing housing and the negative pressure tube are telescopically connected along the plastic bracket, and a pressing sliding cavity is provided inside the pressing housing.

[0016] Preferably, the plastic support and needle locking structure can be threaded or interlocked.

[0017] Preferably, one end of the steel needle can penetrate the rubber layer.

[0018] The beneficial technical effects of this utility model are as follows:

[0019] The conjunctival cyst removal device provided by this utility model

[0020] 1) This device fixes the steel needle through the needle locking structure on the plastic bracket. It is operated through the plastic bracket and the pressing shell. The structure is small and easy to grip. One-handed operation helps to stabilize the needle, prevents it from shifting, and reduces damage to surrounding tissues.

[0021] 2) By piercing the rubber layer on the negative pressure tube with a steel needle on the plastic support, the pressure inside the negative pressure tube can tighten the bladder wall, resulting in a higher success rate.

[0022] 3) This device connects the cyst cavity to a negative pressure tube by piercing it with a steel needle. The pressure from the negative pressure tube draws out the fluid accumulated in the cyst cavity. After the fluid in the cyst cavity is completely drained, aspiration continues until the cyst cavity is under negative pressure. The needle then adheres to the cyst wall. When the needle is withdrawn, the cyst wall is removed. The key to operation is to accurately locate the cyst wall and aspirate it out. This minimizes damage and reduces the number of complications. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a preferred embodiment of the conjunctival cyst removal device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the telescopic tube structure of a preferred embodiment of the conjunctival cyst removal device according to the present invention;

[0025] Figure 3This is a schematic diagram of the steel needle limiting structure of a preferred embodiment of the conjunctival cyst removal device according to the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a negative pressure tube according to a preferred embodiment of the conjunctival cyst removal device of the present invention;

[0027] Figure 5 This is a schematic diagram showing the side internal view and partial dimensions of a preferred embodiment of the conjunctival cyst removal device according to the present invention.

[0028] In the diagram: 1. Pressing housing; 101. Limiting housing; 102. Rubber layer; 103. Pressing sliding cavity; 104. Negative pressure tube; 2. Plastic bracket; 201. Needle locking structure; 202. Steel needle; 203. Limiting component. Detailed Implementation

[0029] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0030] like Figure 1 - Figure 5 As shown, the conjunctival cyst removal device provided in this embodiment includes a plastic bracket 2 for limiting the position, and a steel needle 202 is locked and installed inside the plastic bracket 2.

[0031] On the other side of the plastic bracket 2, a pressing housing 1 is telescopically installed. A negative pressure tube 104 is installed inside the pressing housing 1, and a rubber layer 102 is covered at the axial center of one end of the negative pressure tube 104.

[0032] The other end of the steel needle 202 pierces the rubber layer 102 and connects with the negative pressure tube 104;

[0033] The steel needle 202 is fixedly connected to the plastic bracket 2 by the needle locking structure 201.

[0034] A limiting element 203 is installed around one side of the outer ring of the plastic bracket 2, and a limiting housing 101 is installed at the outer end of the plastic bracket 2. The limiting housing 101 covers the limiting element 203 to prevent it from falling off.

[0035] The steel needle 202, which is built into the plastic bracket 2, is 10mm long.

[0036] The length of plastic bracket 2 is 60mm.

[0037] The limiting housing 101 and the limiting member 203 are in close contact with each other. The pressing housing 1 and the negative pressure tube 104 are connected to each other along the plastic bracket 2. The pressing housing 1 has a pressing sliding cavity 103.

[0038] The plastic bracket 2 and the needle locking structure 201 can be threaded or interlocked.

[0039] One end of the steel needle 202 can penetrate the rubber layer 102.

[0040] like Figure 1 - Figure 5 As shown, the working process of the conjunctival cyst removal device provided in this embodiment is as follows:

[0041] Step 1: The plastic bracket 2 is covered with a pressing shell 1. A limiting shell 101 is installed on one side of the pressing shell 1. A negative pressure tube 104 is installed inside the pressing shell 1. A rubber layer 102 is installed at the outer end of the negative pressure tube 104. A limiting component 203 is installed around one side of the plastic bracket 2. The limiting component 203 fits with the limiting shell 101 and prevents it from falling off. A needle locking structure 201 is installed on one side of the plastic bracket 2. A steel needle 202 is fixedly installed inside the needle locking structure 201.

[0042] Step 2: Observe the condition of the patient's eyelids and conjunctiva, rule out lesions of infection in the skin and conjunctiva around the eyes, gently push the cyst and observe whether it can be moved. If there is adhesion, it is estimated that the cyst cannot be completely removed. Microscopic toothless forceps and microscopic corneal scissors are required.

[0043] Step 3: Clean the skin around the eyes, rinse the conjunctival sac with saline, drip 5% povidone-iodine into the conjunctival sac, leave it for 1 minute, then rinse the povidone-iodine in the conjunctival sac with saline, and disinfect the skin around the eyelids with 5% povidone-iodine.

[0044] Step 4: Instill 0.5% promecaine topical anesthetic into the eyes. The patient should assume a comfortable sitting position. Adjust the height of the slit-lamp microscope. Fix the patient's chin on the jaw rest of the slit-lamp microscope and press the forehead against the forehead rest. Instruct the patient to focus on a target and not to move their eyes. Keep the head still.

[0045] Step 5: Position the patient in a comfortable sitting position in front of the slit lamp. Instruct the patient to fixate on a single point and instruct them not to move their head or eyes. Expose the cyst to a location that facilitates the operation. Select a site where the boundary between the conjunctiva and the cyst is clear, avoiding blood vessels when inserting the needle. Ensure that the bevel of the steel needle 202 is completely inserted into the cyst cavity. After the steel needle 202 is inserted into the cyst cavity, pierce the rubber layer with the other end and enter the negative pressure tube 104 to aspirate the fluid in the cyst cavity. After aspirating all the fluid in the cyst cavity, continue aspiration until the cyst cavity is under negative pressure and the needle tip adheres to the cyst wall. Remove the cyst wall when withdrawing the needle tip.

[0046] Step Six: Instruct the patient to move their eyes and blink. Check the integrity of the aspirated cyst. If there is a cyst with the conjunctiva partially adhered to the cyst wall and the cyst wall cannot be completely aspirated, use microscopic toothless forceps to grasp the cyst wall and use microscopic corneal scissors to separate the conjunctiva, removing the cyst wall as cleanly as possible. Apply antibiotic eye ointment and bandage the eye after the procedure.

[0047] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A conjunctival cyst removal device, comprising a plastic support (2) for positioning, wherein a steel needle (202) is locked inside the plastic support (2); Its features are: A pressing housing (1) is telescopically installed on the other side of the plastic bracket (2). A negative pressure tube (104) is installed inside the pressing housing (1). A rubber layer (102) is covered at the axial center of one end of the negative pressure tube (104). The other end of the steel needle (202) pierces the rubber layer (102) and connects with the negative pressure tube (104); The steel needle (202) is fixedly connected to the plastic bracket (2) by the needle locking structure (201).

2. The conjunctival cyst removal device according to claim 1, characterized in that: A limiting component (203) is installed around one side of the plastic bracket (2), and a limiting housing (101) is installed at the outer end of the plastic bracket (2). The limiting housing (101) covers the limiting component (203) to prevent it from falling off.

3. The conjunctival cyst removal device according to claim 2, characterized in that: The steel needle (202) built into the plastic bracket (2) is 10mm long.

4. The conjunctival cyst removal device according to claim 3, characterized in that: The length of the plastic bracket (2) is 60mm.

5. The conjunctival cyst removal device according to claim 4, characterized in that: The limiting housing (101) and the limiting member (203) fit together. The pressing housing (1) and the negative pressure tube (104) are connected in a telescopic manner along the plastic bracket (2). The pressing housing (1) has a pressing sliding cavity (103).

6. The conjunctival cyst removal device according to claim 5, characterized in that: The plastic bracket (2) and the needle locking structure (201) can be threaded or interlocked.

7. The conjunctival cyst removal device according to claim 6, characterized in that: One end of the steel needle (202) can penetrate the rubber layer (102).

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