Suction tube head for ophthalmologic operation

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a suction tube head for an ophthalmologic operation. The device comprises a holding tube, one end of the holding tube is fixedly provided with a mounting tube communicated with the holding tube and used for being connected with a suction tube, the other end of the holding tube is fixedly provided with a connecting tube communicated with the holding tube, the unfixed end of the connecting tube is sleeved with a sleeve, and the center of a tube opening of the unfixed end of the sleeve is vertically provided with a mounting ring. The installation ring is connected with the inner side wall of the sleeve through a plurality of connecting blocks, an air inlet channel used for liquid to penetrate through is formed between the installation ring and the sleeve, a hollow ball capable of rotating freely is arranged in the installation ring, and an arc-shaped groove used for clamping the hollow ball is formed in the inner side wall of the installation ring in the circumferential direction of the installation ring. A part of a ball body of the hollow ball is located outside the pipe opening, a plurality of first air inlet holes which are evenly distributed are formed in the hollow ball, and an opening and closing assembly used for opening or closing suction force is arranged on the holding pipe. The suction tube can be prevented from being blocked by tissues in an operation area, and eye tissues are prevented from being injured.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and particularly relates to a suction tube head for ophthalmic surgery. Background Technique

[0002] Ophthalmic surgery, also known as eye surgery, is a medical procedure used to treat various eye diseases and conditions. It can also be used to correct vision problems such as myopia, hyperopia, and astigmatism. Ophthalmic surgery can involve the use of microscopic instruments for delicate operations and usually requires highly specialized training and skills. Some common ophthalmic surgeries include: cataract surgery, glaucoma surgery, corneal transplantation surgery, refractive surgery, eyelid surgery, vitrectomy surgery, plastic ophthalmic surgery, etc.

[0003] In ophthalmic surgery, in order to keep the surgical area clear, reduce the risk of infection, and facilitate the smooth progress of the surgery, it is necessary to use a negative pressure suction device to timely suck out the bleeding, exudate, irrigation fluid or other liquids in the surgical area. Currently, the suction tube head used on the negative pressure suction device is straight tubular with relatively large holes. When the suction tube head approaches the human tissue in the surgical area, it is easy to suck the adjacent tissue into the holes, thus blocking the suction tube. Because the tissues of the human eye are relatively fragile, the blocked tissue is easily necrotic or damaged and bleeding under the pulling of the negative pressure suction, causing secondary damage to the tissues in the patient's surgical area. Content of the Utility Model

[0004] The purpose of the utility model is to provide a suction tube head for ophthalmic surgery, which can prevent the tissue in the surgical area from blocking the suction tube and avoid damage to the tissues of the eye.

[0005] The suction tube head for ophthalmic surgery includes a holding tube. One end of the holding tube is fixed with an installation tube that is communicated with it and used to connect the suction tube. The other end of the holding tube is fixed with a connecting tube that is communicated with it. A sleeve is sleeved on the unfixed end of the connecting tube. An installation ring is vertically arranged at the center of the tube orifice at the unfixed end of the sleeve. The installation ring and the inner side wall of the sleeve are connected by a plurality of connecting blocks. An air inlet channel for liquid to pass through is formed between the installation ring and the sleeve. A hollow ball that can rotate freely is arranged in the installation ring. An arc-shaped groove for clamping the hollow ball is opened on the inner side wall of the installation ring along its circumferential direction. A part of the ball body of the hollow ball is located outside the tube orifice. A plurality of first air inlet holes are evenly distributed on the hollow ball. An opening and closing assembly for opening or closing the suction is arranged on the holding tube.

[0006] Further, the opening and closing assembly includes a spring piece. A side hole that is communicated inside and outside is opened on the holding tube. The spring piece has a "V" - shaped structure. One section of the spring piece is fixed on the holding tube, and a sealing pad for sealing the side hole is fixed on the other section of the spring piece.

[0007] Further, an oblique angle for controlling the amount of outside air entering the grip tube is provided at the bottom of the gasket.

[0008] Further, the gasket is made of an elastic material.

[0009] Further, a plurality of second air inlet holes for liquid to pass through are provided at the unfixed end of the sleeve.

[0010] Further, a chamfer is provided at the corner between the end face and the outer side wall of the unfixed end of the sleeve.

[0011] Further, a plurality of grooves for engaging the user's fingers are provided on the grip tube.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] When the sleeve approaches the surgical area, the hollow ball will fit with the human tissue in the surgical area. The hollow ball will press the human tissue in the direction of the sleeve nozzle, preventing the human tissue from being attracted and adsorbed at the nozzle of the sleeve, thus causing blockage of the sleeve. The first air inlet holes on the hollow ball and the second air inlet holes on the sleeve can absorb the liquid in the surgical area, and the air inlet channel can absorb the mixture containing fine tissue fragments, ensuring the vision and cleanliness of the surgical area. The plurality of first air inlet holes can disperse the suction force at the nozzle, avoiding excessive concentration of the suction force and adsorbing the human tissue at the nozzle, resulting in blockage of the suction tube and secondary injury to the human tissue. When transferring the liquid suction position, the hollow ball can roll along the human tissue, thus preventing rubbing against the human tissue and avoiding secondary injury to the human tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is an enlarged left view of the present utility model;

[0016] Figure 3 is Figure 1 an enlarged schematic diagram of area a in

[0017] Figure 4 is a perspective view of the present utility model;

[0018] Figure 5 is an exploded view of the present utility model;

[0019] Figure 6 is Figure 5 an enlarged schematic diagram of area b in

[0020] The names of the components in the figure are: 1, sleeve 2, connecting pipe 3, side hole 4, sealing gasket 5, spring sheet 6, grip pipe 7, mounting pipe 8, hollow ball 9, first air inlet hole 10, mounting ring 11, connecting block 12, second air inlet hole. DETAILED DESCRIPTION

[0021] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Example

[0022] The present embodiment of the present invention is a suction tube head for ophthalmic surgery, such as Figure 1 , Figure 3 and Figure 5 As shown, it includes a grip tube 6, one end of which is fixed with a mounting tube 7 which is in communication with the grip tube and is used to connect the suction tube. In this embodiment, the grip tube 6 is a rectangular tube, but a round tube or a tube of other shapes can also be used. When in use, one end of the suction tube can be sleeved on the mounting tube 7, so that the suction tube is connected to the grip tube 6, so that the negative pressure suction force generated by the negative pressure aspirator can be transmitted to the grip tube 6 through the suction tube.

[0023] The grip tube 6 is provided with a plurality of grooves for engaging the user's fingers. The grooves are in the shape of arcs. There are four grooves, which are respectively used to engage the remaining four fingers except the thumb, so as to prevent the grip tube 6 from slipping and falling off in the hands of the staff;

[0024] A connecting tube 2 communicating therewith is fixed to the other end of the grip tube 6, and a sleeve 1 is sleeved on the unfixed end of the connecting tube 2. The connecting tube 2 is a circular tube, and of course a rectangular tube or an elliptical tube can also be used; there is an interference fit between the sleeve 1 and the connecting tube 2, so that the sleeve 1 and the connecting tube 2 can be sealed to prevent air leakage, and the sleeve 1 is easy to be removed from the connecting tube 2, so that the sleeve 1 is easy to replace or clean and disinfect; when in use, the connecting tube 2 can transmit the negative pressure suction force in the grip tube 6 to the sleeve 1, so that suction is generated at the end of the sleeve 1;

[0025] A mounting ring 10 is vertically arranged at the center of the pipe opening of the unfixed end of the sleeve 1. The mounting ring 10 is connected to the inner side wall of the sleeve 1 through a plurality of connecting blocks 11. In this embodiment, there are four connecting blocks 11, which are evenly distributed between the mounting ring 10 and the sleeve 1. The mounting ring 10 is supported and fixed by the connecting blocks 11, so that the mounting ring 10 is located at the center of the pipe opening of the sleeve 1.

[0026] An air intake passage for liquid to pass through is formed between the mounting ring 10 and the sleeve 1. There is a spacing distance between the inner hole wall of the mounting ring 10 and the sleeve 1, and this spacing serves as the air intake passage for the liquid in the surgical area. The air intake passage can absorb the mixture containing fine tissue fragments;

[0027] A hollow ball 8 that can rotate freely is arranged inside the mounting ring 10. An arc-shaped groove for engaging the hollow ball 8 is formed along the circumferential direction on the inner side wall of the mounting ring 10. The installation principle of the hollow ball 8 and the mounting ring 10 is the same as that of a ball bearing and a ballpoint pen refill; During installation, the hollow ball 8 is immersed in liquid nitrogen, and the hollow ball 8 shrinks through the principle of thermal expansion and contraction. After the shrunk hollow ball 8 is placed into the mounting ring 10, as the temperature of the hollow ball 8 recovers, the volume of the hollow ball 8 recovers, causing part of the ball body of the hollow ball 8 to be engaged in the arc-shaped groove, thereby fixing and positioning the hollow ball 8. And there is a clearance fit between the hollow ball 8 and the groove wall of the chute, enabling the hollow ball 8 to rotate freely;

[0028] Part of the ball body of the hollow ball 8 is located outside the pipe orifice. During use, when the sleeve 1 approaches the surgical area, the hollow ball 8 will fit against the human tissue in the surgical area. The hollow ball 8 will press the human tissue in the direction of the pipe orifice of the sleeve 1, preventing the human tissue from being attracted and adsorbed at the pipe orifice of the sleeve 1, which may cause blockage of the sleeve 1; When transferring the liquid suction position, the hollow ball 8 can roll along the human tissue, thereby preventing rubbing against the human tissue and avoiding secondary damage to the human tissue;

[0029] A number of first air intake holes 9 are evenly distributed on the hollow ball 8; All the first air intake holes 9 are internally and externally connected, enabling the hollow ball 8 to absorb the liquid near the surgical area when it fits against the human tissue. The number of first air intake holes 9 can disperse the suction force at the pipe orifice, avoiding the suction force being too concentrated and adsorbing the human tissue at the pipe orifice, causing blockage of the suction tube and secondary damage to the human tissue;

[0030] A number of second air intake holes 12 for liquid to pass through are formed on the unfixed end of the sleeve 1. All the second air intake holes 12 are evenly distributed on the unfixed pipe wall of the sleeve 1, used to absorb the liquid near the pipe orifice, increasing the absorption range of the pipe orifice and improving the absorption effect;

[0031] A chamfer is formed at the corner between the end face and the outer side wall of the unfixed end of the sleeve 1. By forming the chamfer, it can effectively avoid the corner between the end face and the outer side wall of the unfixed end of the sleeve 1 from causing rubbing damage to the human tissue;

[0032] For further explanation, such as Figure 1 、 Figure 2 and Figure 4As shown, in this embodiment, the preferred opening and closing component preferably includes a spring piece 5. A side hole 3 communicating with the inside and outside is formed in the grip tube 6. The side hole 3 is circular. When the side hole 3 is opened, the outside air can enter the grip tube 6 from the side hole 3, so that no suction force is generated at the sleeve 1, thereby closing the suction force at the sleeve 1. The spring piece 5 has a "V" - shaped structure. One section of the spring piece 5 is fixed on the grip tube 6, and a sealing gasket 4 for sealing the side hole 3 is fixed on the other section of the spring piece 5. The sealing gasket 4 is made of materials such as natural rubber latex, nitrile rubber latex, chloroprene rubber latex, styrene - butadiene rubber, or thermoplastic elastomer solution or emulsion, styrene - butadiene rubber emulsion, silica gel, and rubber. When the spring piece 5 is in a natural state, the sealing gasket 4 thereon is away from the side hole 3, making the side hole 3 in an always - open state. The sealing gasket 4 has the same shape as the side hole 3, and there is an interference fit between the sealing gasket 4 and the side hole 3. When the sleeve 1 needs to absorb the liquid in the surgical area, press one end of the spring piece 5, so that the sealing gasket 4 on this section is inserted into the side hole 3 to seal the side hole 3, so that the outside air can only enter from the sleeve 1, enabling the sleeve 1 to generate a suction force to suck out the liquid in the surgical area. An inclined angle for controlling the amount of outside air entering the grip tube 6 is formed at the bottom of the sealing gasket 4. The inclined angle faces the opening direction of the "V" - shaped spring piece 5. When the bottom end of the sealing gasket 4 is inserted into the side hole 3, the space for the outside air to pass through at the side hole 3 will decrease, reducing the air flow rate at the side hole 3, increasing the negative pressure in the grip tube 6, and part of the air enters through the sleeve 1, causing the sleeve 1 to generate a suction force. When the sealing gasket 4 is gradually inserted into the side hole 3, the inclined surface and the side wall of the side hole 3 gradually approach, the space for air to pass through gradually decreases, the negative pressure in the grip tube 6 gradually increases, and the suction force at the sleeve 1 gradually increases. Thus, the suction force at the sleeve 1 is adjusted by the length of the sealing gasket 4 inserted into the side hole 3. During use, by pressing the spring piece 5, the sealing gasket 4 on the spring piece 5 is inserted into the side hole 3. By adjusting the length of the sealing gasket 4 inserted into the side hole 3, the distance between the inclined surface and the side wall of the side hole 3 is adjusted to control the flow rate of the outside air entering the grip tube 6 from the side hole 3. When the air intake flow rate at the side hole 3 is large, the suction force at the sleeve 1 decreases; when the air flow rate at the side hole 3 is large, the suction force at the sleeve 1 increases. When the side hole 3 is completely open, no suction force is generated at the sleeve 1, thereby controlling the opening or closing of the suction force at the sleeve 1 and controlling the magnitude of the suction force at the sleeve 1. This solution as a whole constitutes an opening and closing component for opening or closing the suction force. Of course, the opening and closing component can also adopt a sealing plate. A clamping groove for clamping the sealing plate is formed in the grip tube 6 corresponding to the side hole 3. Sliding grooves for the sealing plate to slide are formed on the left and right groove walls of the clamping groove. The air flow rate at the side hole 3 is adjusted by sliding the sealing plate, and the side hole 3 is sealed by the sealing plate to control the opening or closing of the suction force at the sleeve 1.

[0033] During actual use, the staff holds the holding tube 6 with their hand, places the thumb against the spring piece 5, and the other four fingers are engaged in the groove. The sleeve 1 is slowly brought close to the surgical area, and the spring piece 5 is slowly pressed, inserting the sealing pad 4 on the spring piece 5 into the side hole 3, gradually reducing the air flow rate at the side hole 3 and gradually increasing the suction force at the sleeve 1. The suction force at the sleeve 1 is controlled to an appropriate level. The hollow ball 8 is placed against the human tissue in the surgical area, and the human tissue in the direction of the tube orifice of the sleeve 1 is gently pressed by the hollow ball 8 to prevent the human tissue from being attracted and adsorbed on the tube orifice of the sleeve 1, causing blockage to the sleeve 1. The liquid in the surgical area is absorbed through the first air inlet hole 9 and the second air inlet hole 12. The air inlet channel can absorb the mixture containing fine tissue fragments, ensuring the visibility and cleanliness of the surgical area. When transferring the liquid absorption position, the hollow ball 8 can roll along the human tissue, thus preventing rubbing against the human tissue and avoiding secondary injury to the human tissue.

Claims

1. A suction tube head for ophthalmic surgery, comprising a grip tube (6), characterized in that: A mounting tube (7) communicating with the grip tube (6) and used for connecting the suction tube is fixed on one end of the grip tube (6), and a connecting tube (2) communicating with the grip tube (6) is fixed on the other end of the grip tube (6). A sleeve (1) is sleeved on the unfixed end of the connecting tube (2), and a mounting ring (10) is vertically arranged at the center of the tube mouth of the unfixed end of the sleeve (1). The mounting ring (10) and the inner side wall of the sleeve (1) are connected by a plurality of connecting blocks (11). An air inlet channel for liquid to pass through is formed between the mounting ring (10) and the sleeve (1). A freely rotatable hollow ball (8) is arranged in the mounting ring (10), and an arc groove for engaging the hollow ball (8) is provided on the inner side wall of the mounting ring (10) along its circumferential direction. Part of the ball body of the hollow ball (8) is located outside the tube mouth. The hollow ball (8) is provided with a plurality of evenly distributed first air inlet holes (9). An opening and closing component for opening or closing the suction is provided on the grip tube (6).

2. The suction tube head for ophthalmic surgery according to claim 1, characterized in that: The opening and closing assembly comprises a spring sheet (5), a grip tube (6) having a side hole (3) communicating with the inside and outside, the spring sheet (5) being in a "V"-shaped structure, one section of the spring sheet (5) being fixed on the grip tube (6), and a sealing pad (4) for sealing the side hole (3) being fixed on the other section of the spring sheet (5).

3. The suction tube head for ophthalmic surgery according to claim 2, characterized in that: The bottom of the sealing pad (4) is provided with an oblique angle for controlling the amount of external air entering the grip tube (6).

4. The suction tube head for ophthalmic surgery according to claim 2, characterized in that: The sealing pad (4) is made of an elastic material.

5. The suction tube head for ophthalmic surgery according to claim 1, characterized in that: The unfixed end of the sleeve (1) is provided with a plurality of second air inlet holes (12) for liquid to pass through.

6. The suction tube head for ophthalmic surgery according to claim 1, characterized in that: A chamfer is provided at the corner between the end surface of the unfixed end of the sleeve (1) and the outer side wall.

7. The suction tube head for ophthalmic surgery according to claim 1, characterized in that: The grip tube (6) is provided with a plurality of grooves for engaging the user's fingers.

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