Multifunctional crystal nucleus delivery device for cataract surgery

Abstract

The invention discloses a multifunctional crystal nucleus delivery device for cataract surgery in the technical field of medical instruments, which comprises a casing, a clamp body is arranged at one end of the casing, a driving part is arranged on the clamp body, air bags are arranged on two sides of the clamp body, an air cabin is arranged in the casing, and a piston block is arranged in the air cabin to divide the air cabin into an upper cabin and a lower chamber. The lower cavity is communicated with the air bag through an air pipe, and an observation window used for observing the position of the piston is arranged on the machine shell. By the adoption of the technical scheme, the viscoelastic agent injection conditions on the two sides of the clamp body can be detected, and the viscoelastic agent injection state can be adjusted conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, in particular to a multifunctional lens nucleus extractor for cataract surgery. Background Art

[0002] Cataract is a disease caused by a variety of factors that lead to lens metabolism disorders. As the disease progresses, it can lead to lens protein denaturation and turbidity. The clinical manifestations of cataract patients are mainly decreased vision and decreased contrast sensitivity. When the turbidity of the lens nucleus reaches dark yellow or brown, it is considered a hard nucleus. This degree of vision loss is obvious and seriously affects the quality of life. Only then will the elderly go to the hospital for surgery.

[0003] In the prior art, forceps and snares are used to deliver the lens nucleus. However, during the operation, hydrodissection is required under the anterior lens capsule and the lens nucleus is moved to slowly rotate out of the capsule bag. After viscoelastic is fully injected into the anterior chamber to protect the corneal endothelium, the lens nucleus is delivered from a large incision at the corneal edge. Whether the viscoelastic is injected evenly on both sides of the lens nucleus will also affect the balance of the delivery process. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a multifunctional lens nucleus extractor for cataract surgery, which can detect the injection status of the viscoelastic agent on both sides of the clamp body and facilitate the adjustment of the viscoelastic agent injection status.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a multifunctional lens nucleus extractor for cataract surgery, comprising a casing, a clamping body is provided at one end of the casing, the clamping body is provided with a driving member, air bags are provided on both sides of the clamping body, an air cabin is provided in the casing, a piston block is provided in the air cabin to separate the air cabin into an upper chamber and a lower chamber, the lower chamber is connected to the air bag through an air tube, and an observation window is provided on the casing for observing the position of the piston.

[0006] The following beneficial effects are achieved by adopting the above scheme: the user can use the clamp to move and deliver the lens nucleus. The viscoelastic is viscous, and the role of viscosity is to prevent the liquid from sliding against each other. Therefore, the imbalance of viscoelastic on both sides of the clamp during delivery will affect the clamping balance under the action of viscosity. When the viscoelastic is injected into the anterior chamber, as the viscoelastic increases, the viscoelastic will flow to the airbag and squeeze and deform the airbag, causing the volume of the airbag to shrink. The gas in the airbag will flow into the lower chamber of the air cabin, lifting the piston block to move it. The user can observe the position of the piston block in the observation window, thereby judging the amount of viscoelastic on each side of the clamp, making it easier to adjust the injection state of the viscoelastic and reduce the impact of uneven viscoelastic injection on the balance of the delivery process.

[0007] Furthermore, a suction port is provided on the clamp body, and the suction port is communicated with the upper chamber through a suction pipe.

[0008] Beneficial effects: During the delivery process, the pressure on the airbag will gradually increase as the viscoelastic fills, and then as the clamp body detaches from the crystal nucleus, the clamp body is no longer immersed in the viscoelastic, and the pressure on the airbag gradually decreases. When the pressure on the airbag gradually increases, the piston of the suction port will move up to discharge the gas in the upper chamber, and when the pressure on the airbag gradually decreases, the piston will move down, allowing the suction port to suck in the surrounding residual cortex.

[0009] Further, the suction port is located below the airbag.

[0010] Beneficial effect: The suction port is located below the airbag, which can effectively perform the suction work and maintain a longer contact time with the viscoelastic agent during the process of separating the crystal core from the clamp body.

[0011] Furthermore, the suction pipe is connected with a branch pipe, the branch pipe is connected with the outside of the casing, and a one-way air valve is arranged in the branch pipe.

[0012] Beneficial effect: The suction port is located below the airbag, and the viscoelastic agent will also flow back, affecting the piston's upward push. The function of the branch pipe is to change the exhaust position of the upper chamber so that the exhausted gas does not need to resist the viscoelastic agent flowing back, but is discharged through the one-way air valve of the branch pipe.

[0013] Furthermore, the driving member includes a transmission rope, which is provided with a Y-shaped end, and the Y-shaped ends are respectively connected to the inner side walls of the clamp body. A rotating shaft is provided in the casing, and the transmission rope passes through the casing and is connected to the rotating shaft. A knob is provided on the outside of the casing, and the knob is coaxial with the rotating shaft and fixedly connected.

[0014] Beneficial effect: The user can tighten the transmission rope by rotating the knob to close the clamp. The transmission rope structure can reduce the volume occupied by the driving part, making it easier to operate on the patient's eye.

[0015] Furthermore, the pistons are all fixedly connected with transmission rods, the transmission rods are all passed through the upper chamber and out of the air cabin, and one end of the transmission rod away from the air cabin is fixedly connected with a support rope, and the support rope is fixedly connected to the transmission rope.

[0016] Beneficial effect: The movement of the piston can strengthen the clamping force of the clamp. When the piston is lifted, it drives the transmission rod to be lifted, so that the lower part of the transmission rope is pulled upward by the transmission of the support rope, thereby strengthening the clamping force of the clamp.

[0017] Furthermore, a sleeve for correcting the pulling direction of the transmission rope is provided on one side of the casing close to the clamping body.

[0018] Beneficial effect: The pipe sleeve can correct the transmission direction of the transmission rope and reduce the influence of the support rope.

[0019] Furthermore, scale lines are provided on the observation window.

[0020] Beneficial Effect: The scale lines can help the user measure the amount of viscoelastic on each side of the current clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0022] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0023] Figure 3 It is an axial schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The figure marks in the drawings of the specification include: casing 1, clamping body 2, air bag 3, air cabin 4, upper cabin 5, lower chamber 6, observation window 7, suction port 8, branch pipe 9, one-way air valve 10, transmission rope 11, rotating shaft 12, knob 13, transmission rod 14, branch rope 15, and pipe sleeve 16.

[0026] Embodiment 1

[0027] The embodiment is basically as shown in the attached Figure 1 To Attachment Figure 3 As shown:

[0028] A multifunctional lens nucleus extractor for cataract surgery comprises a housing 1, one end of which is provided with a clamping body 2, the clamping body 2 is provided with a driving member, the driving member comprises a transmission rope 11, the transmission rope 11 is provided with a Y-shaped end, the Y-shaped ends are respectively connected to the inner side walls of the clamping body 2, a rotating shaft 12 is provided in the housing 1, the transmission rope 11 passes through the housing 1 and is connected to the rotating shaft 12, a knob 13 is provided on the outer side of the housing 1, the knob 13 is coaxial with the rotating shaft 12 and is fixedly connected, the pistons are all fixedly connected with a transmission rod 14, the transmission rod 14 passes through the upper chamber 5 and goes out of the air chamber 4, the ends of the transmission rod 14 away from the air chamber 4 are all fixedly connected with a support rope 15, the support rope 15 is an elastic rope, and the support rope 15 is fixedly connected to the transmission rope 11, and a sleeve 16 for correcting the pulling direction of the transmission rope 11 is provided on the side of the housing 1 close to the clamping body 2;

[0029] An airbag 3 is bonded and fixed on both sides of the clamp body 2, an air cabin 4 is opened in the casing 1, a piston block is arranged in the air cabin 4 and the air cabin 4 is divided into an upper cabin chamber 5 and a lower chamber 6, the lower chamber 6 is connected with the airbag 3 through an air pipe, an observation window 7 for observing the piston position is provided on the casing 1, the observation window 7 is made of a transparent material, and a scale line is provided on the observation window 7, a suction port 8 is opened on the clamp body 2, the suction port 8 is connected with the upper cabin chamber 5 through a suction pipe, the suction port 8 is located below the airbag 3, the suction pipe is connected with a branch pipe 9, the branch pipe 9 is connected with the outside of the casing 1, and a one-way air valve 10 is provided in the branch pipe 9.

[0030] The specific implementation process is as follows: the user can use the clamp 2 to move and deliver the crystal nucleus, and the user can tighten the transmission rope 11 by rotating the knob 13 to close the clamp 2. The transmission rope 11 structure can reduce the volume occupied by the drive part, which is convenient for operation in the patient's eye. The viscoelastic agent has viscosity, and the role of viscosity is to prevent the mutual sliding inside the liquid. Then, during the delivery process, the imbalance of the viscoelastic agent on both sides of the clamp 2 will affect the clamping balance under the action of viscosity. When the viscoelastic agent is injected into the anterior chamber, as the viscoelastic agent increases, the viscoelastic agent will flow to the airbag 3 and squeeze and deform the airbag 3, so that the volume of the airbag 3 is reduced. The gas in the airbag 3 will flow into the lower chamber 6 of the air chamber 4, lift the piston block and move it. The user can observe the position of the piston block in the observation window 7, so as to judge the amount of viscoelastic on each side of the clamp 2, which is convenient for adjusting the injection state of the viscoelastic agent and reducing the impact of the delivery process balance caused by the uneven injection of the viscoelastic agent. The movement of the piston can strengthen the clamping force of the clamp 2. When the piston is lifted up, it drives the transmission rod 14 to be lifted up, so that the lower part of the transmission rope 11 is subjected to an upward pulling force under the transmission of the support rope 15, thereby enhancing the clamping force of the clamp body 2.

[0031] During the delivery process, the pressure on the airbag 3 will gradually increase as the viscoelastic fills, and then as the clamp 2 releases the crystal nucleus, the clamp 2 is no longer immersed in the viscoelastic, and the pressure on the airbag 3 will gradually decrease during this process. When the pressure on the airbag 3 gradually increases, the piston of the suction port 8 will push up to discharge the gas in the upper chamber, and when the pressure on the airbag 3 gradually decreases, the piston will move down, allowing the suction port 8 to suck in the surrounding residual cortex. The suction port 8 is located below the airbag 3, which can effectively perform the suction work, and maintain a longer contact time with the viscoelastic during the process of releasing the crystal nucleus from the clamp 2.

[0032] The suction port 8 is located below the airbag 3, and the viscoelastic agent will also flow back, affecting the piston's upward push. The function of the branch pipe 9 is to change the exhaust position of the upper chamber 5 so that the exhausted gas does not need to resist the viscoelastic agent flowing back, but is discharged through the one-way air valve 10 of the branch pipe 9. Since it is a one-way air valve 10, it does not affect the subsequent viscoelastic agent suction.

[0033] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multifunctional lens nucleus extractor for cataract surgery, characterized in that: The utility model comprises a casing, one end of which is provided with a clamping body, the clamping body is provided with a driving part, air bags are provided on both sides of the clamping body, an air cabin is provided in the casing, a piston block is provided in the air cabin to separate the air cabin into an upper cabin and a lower chamber, the lower chamber is connected with the air bag through an air pipe, and an observation window for observing the piston position is provided on the casing.

2. The multifunctional lens nucleus extractor for cataract surgery according to claim 1, characterized in that: The clamp body is provided with a suction port, which is communicated with the upper chamber through a suction pipe.

3. The multifunctional lens nucleus extractor for cataract surgery according to claim 2, characterized in that: The suction port is located below the airbag.

4. The multifunctional lens nucleus extractor for cataract surgery according to claim 3, characterized in that: The suction pipe is connected with a branch pipe, the branch pipe is connected with the outer side of the casing, and a one-way air valve is arranged in the branch pipe.

5. The multifunctional lens nucleus extractor for cataract surgery according to claim 4, characterized in that: The driving part includes a transmission rope, which is provided with a Y-shaped end, and the Y-shaped ends are respectively connected to the inner side walls of the clamp body. A rotating shaft is provided in the casing, and the transmission rope passes through the casing and is connected to the rotating shaft. A knob is provided on the outside of the casing, and the knob is coaxial with the rotating shaft and fixedly connected.

6. The multifunctional lens nucleus extractor for cataract surgery according to claim 5, characterized in that: The pistons are all fixedly connected with transmission rods, and the transmission rods are all passed through the upper cabin and out of the air cabin. One end of the transmission rod away from the air cabin is fixedly connected with a support rope, and the support rope is fixedly connected with the transmission rope.

7. The multifunctional lens nucleus extractor for cataract surgery according to claim 6, characterized in that: A pipe sleeve for correcting the pulling direction of the transmission rope is arranged on one side of the casing close to the clamping body.

8. The multifunctional lens nucleus extractor for cataract surgery according to claim 7, characterized in that: There are scale lines on the observation window.

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