Nucleus pre-chopping device for dura-nucleus cataract
By designing a pre-splitting device for hard-core cataracts, the mechanical splitting technology of the triangular structure splitting head and blunt circular serrated nucleation tip is solved, and the phacoemulsification energy release time and difficulty in operation in hard-core cataract surgery is achieved, and the effect of reducing surgical risks and improving surgical efficiency and safety is achieved.
Patent Information
- Application Number
- CN202421072326.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-05-16
AI Technical Summary
During the operation, patients with hardcore cataracts have high hardness of the lens nucleus, which leads to a long release of phacoemulsification energy, which is difficult to operate, which can easily cause complications such as corneal edema and iris damage.
A pre-split nucleation device for hard-core cataracts is designed. The nucleation head is a triangular structure. The tip of the nucleation nucleation is equipped with blunt circular sawtooths, and the thickness gradually becomes thicker from one side of the tip to the one side of the connecting surface. It is used to mechanically split the nucleation and divide the nucleation to reduce the release of phacoemulsification energy.
Through mechanical nucleation and nuclear separation technology, damage to eye tissue is reduced, surgical risks are reduced, surgical efficiency and safety are improved, and unnecessary phacoemulsification energy release is avoided.
Smart Images
Figure CN222828729U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ophthalmic surgical instruments, and in particular to a pre-cleaving device for hard-nucleus cataracts. Background Art
[0002] Cataract is the clouding of the lens. The most common type is age-related cataract, also known as senile cataract, which is one of the most common causes of visual impairment worldwide. When cataract develops to a certain extent, light is blocked when passing through the refractive medium and cannot be projected onto the retina, causing visual impairment. Some patients will also develop complications such as glaucoma, further causing visual damage. Cataract surgery is to remove the cloudy lens and implant an artificial lens as a replacement for the cloudy lens so that light can be accurately focused on the retina. Cataract phacoemulsification combined with artificial lens implantation is the mainstream procedure for cataract treatment.
[0003] Clinically, patients with advanced hard-nuclear cataracts whose lens becomes hard and tough are often encountered. Due to the difficulty in handling the hard nucleus of the lens nucleus, the phacoemulsification energy release time is long, and the surgical operation requirements are high and difficult to master. The energy release of more cataract phacoemulsification can lead to a series of complications such as corneal edema, iris damage, and a large amount of corneal endothelial loss or even decompensation. Pre-chop technology (Pre-Chop) uses a mechanical chopping and nuclear separation method with zero energy release to handle nuclear blocks, reducing the release of phacoemulsification energy, which can reduce the damage of ultrasonic energy to eye tissues. For this reason, the present application designs a pre-chop device for hard-nuclear cataracts according to the actual clinical work needs, which is convenient for the operator to use a mechanical chopping and nuclear separation method with zero energy release to handle and remove hard-nuclear cataracts, reduce the surgical risks of hard-nuclear cataract patients, and improve the surgical efficiency and safety of hard-nuclear cataract patients. Utility Model Content
[0004] The main purpose of this application is to provide a pre-nuclear chopping device for hard nuclear cataracts, which aims to facilitate the surgeon to use a zero-energy release mechanical chopping and separation method to treat and remove hard nuclear cataracts, reduce the surgical risks of hard nuclear cataract patients, and improve the surgical efficiency and safety of hard nuclear cataract patients.
[0005] The technical solutions adopted in this application are as follows:
[0006] A pre-nuclear chopping device for hard nuclear cataracts comprises a chopping head and a handle portion, wherein the chopping head is fixedly connected to the handle portion, the chopping head is a triangular structure, the end of the chopping head away from the handle portion is a chopping tip, the end of the chopping head connected to the handle portion is a connecting surface end, the chopping tip is provided with blunt circular serrations, and the thickness of the chopping head gradually increases from the side of the chopping tip to the side of the connecting surface end.
[0007] Optionally, the length of the connecting surface end is 2 mm, the distance between the core chopping tip and the connecting surface end is 1.6 mm, and the maximum thickness of the core chopping head is 2 mm.
[0008] Optionally, the handle portion includes an L-shaped connecting rod and a handle rod, one end of the L-shaped connecting rod is fixed to the connecting surface end, and the other end of the L-shaped connecting rod is fixed to the handle rod.
[0009] Optionally, the handle rod is provided with an anti-slip sheath.
[0010] Compared with the prior art, the beneficial effects of this application are:
[0011] The embodiment of the present application proposes a pre-nuclear chopping device for hard-nuclear cataracts. By designing blunt round serrations at the chopping tip of the chopping head, it is helpful for the chopping head to clamp the lens nucleus firmly. At the same time, the chopping head is designed to be a triangular shape with a thickness gradually thickening from the chopping tip side to the connecting surface side, so that the contact area between the chopping tip and the lens nucleus is small, which is more conducive to completing the pre-nuclear chopping. Chopping the nucleus with the pre-nuclear chopping device of the present application avoids damage to the suspensory ligament, iris tissue and corneal endothelium. After the pre-nuclear chopping treatment, the release of unnecessary phacoemulsification energy can be effectively reduced, which is beneficial to reducing the surgical risks of patients with hard-nuclear cataracts and improving the surgical efficiency and safety of patients with hard-nuclear cataracts. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 A schematic structural diagram of a pre-cleaving device for hard-nuclear cataracts provided in an embodiment of the present application at one viewing angle.
[0013] Description of the reference numerals in the accompanying drawings:
[0014] 1-core splitting head, 2-handle part, 201-L-type connecting rod, 202-handle rod, 3-blunt round serrations. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0016] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0017] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0018] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0019] Refer to the attached Figure 1 The embodiment of the present application provides a pre-nuclear chopping device for hard nuclear cataracts, including a chopping head 1 and a handle portion 2, the chopping head 1 is fixedly connected to the handle portion 2, the end of the chopping head 1 away from the handle portion 2 is a chopping tip, the chopping tip is provided with blunt circular serrations 3, the end of the chopping head 1 connected to the handle portion 2 is a connecting surface end, the chopping head 1 is a triangular structure, and the thickness of the chopping head 1 gradually becomes thicker from the side of the chopping tip to the side of the connecting surface end. It can be imagined that the core chopping head 1 based on the triangular structure, since the core chopping tip is provided with blunt circular serrations 3, can be well nailed into the lens nucleus by means of the blunt circular serrations 3, and maintain good positioning contact with the lens nucleus. At the same time, the thickness of the core chopping head 1 gradually becomes thicker from the side of the core chopping tip to the side of the connecting surface end, so that the contact area between the core chopping tip and the lens nucleus is small, and the core chopping pressure per unit area is large during chopping, which makes it easier to split a notch in the lens nucleus, and the core chopping head 1 with gradually increasing thickness gradually splits the entire lens nucleus along the split notch, thereby realizing pre-chopping of the core.
[0020] In this embodiment, the length L of the connecting surface end is 2mm, which is convenient for entering and exiting the 2.2mm corneal main incision. Since the width of the corneal main incision for cataract surgery is 2.2mm-3.0mm, and 2.2mm is the usual incision size at the current international advanced level, the length L of the connecting surface end is 2mm, which is convenient for the core splitting head 1 to enter and exit the corneal main incision. The distance d between the core splitting tip and the connecting surface end is 1.6mm, and the maximum thickness h of the core splitting head 1 is 1.8mm, both of which take into account the convenience of entering and exiting the corneal main incision and the safety of the core splitting.
[0021] In the above, the handle portion 2 includes an L-shaped connecting rod 201 and a handle rod 202. One end of the L-shaped connecting rod 201 is fixed to the connecting surface end, and the other end of the L-shaped connecting rod 201 is fixed to the handle rod 202. The handle rod 202 and the core chopping head 1 are fixed by the L-shaped connecting rod 201, so that there is an angle of 90 degrees between the core chopping head 1 and the handle rod 202, which is convenient for the core chopping operation, and an anti-slip cover is provided on the handle rod 202, which can play an anti-slip effect when the handle rod 202 is held by hand.
[0022] Based on the above content, the pre-cleaving device for hard nuclear cataract provided in the embodiment of the present application is used as follows:
[0023] After completing the continuous circular capsulorhexis and hydrodissection, the pre-nucleus is split. The left hand puts the Nagahara splitter (a classic cataract surgical instrument) into the anterior chamber through the corneal lateral incision, slides it into the lens equator in the capsular bag close to the cortex, and the right hand puts the pre-nucleus splitter into the anterior chamber through the corneal main incision, aligns radially from the edge of the capsulorhexis near the main incision to the position of the left-hand Nagahara splitter, and the left-hand Nagahara splitter and the right-hand pre-nucleus splitter squeeze toward each other horizontally, squeezing and splitting the lens nucleus using the fiber arrangement of the lens. The Nagahara splitter and the pre-nucleus splitter meet or nearly meet at the center of the lens, and the two instruments are slightly moved laterally to the sides to divide the lens nucleus into two complete left and right halves. Next, slide the Nagahara chopper into the lens equator in the 8 o'clock position of the capsular bag and pull it toward the center of the capsular bag. The pre-chopper is close to the center of the right half of the nucleus, and the Nagahara chopper moves in opposite directions to split the right half of the lens nucleus into two. The chopping method for the left half of the nucleus is the same as the right half of the nucleus. After the chopping is completed, remove the right pre-chopper, insert the phacoemulsification needle into the anterior chamber, emulsify and remove the nucleus, and proceed to the next step of cataract surgery.
[0024] In summary, the pre-nuclear chopping device for hard nuclear cataracts provided in the present application is of appropriate size and can be easily operated through a 2.2mm main corneal incision, and is suitable for micro-incision cataract surgery; through the cooperation of both hands, the serrated tip of the chopping device can firmly clamp the lens nucleus during the chopping process, and horizontal in situ pre-chopping of the nucleus can be achieved, avoiding damage to the suspensory ligament, iris tissue and corneal endothelium; reducing the release of unnecessary phacoemulsification energy, which is beneficial to reducing the surgical risks of patients with hard nuclear cataracts and improving the surgical efficiency and safety of patients with hard nuclear cataracts.
[0025] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A pre-chopping device for hard nuclear cataract, characterized in that: The utility model comprises a core chopping head and a handle part, wherein the core chopping head is fixedly connected to the handle part, the core chopping head is a triangular structure, the end of the core chopping head away from the handle part is a core chopping tip, the end of the core chopping head connected to the handle part is a connecting surface end, the core chopping tip is provided with blunt circular serrations, and the thickness of the core chopping head gradually becomes thicker from the side of the core chopping tip to the side of the connecting surface end.
2. The pre-chopping device for hard nuclear cataract according to claim 1, characterized in that: The length of the connecting surface end is 2 mm, the distance between the chopping core tip and the connecting surface end is 1.6 mm, and the maximum thickness of the chopping core head is 2 mm.
3. The pre-chopping device for hard nuclear cataract according to claim 1, characterized in that: The handle portion comprises an L-shaped connecting rod and a handle rod, one end of the L-shaped connecting rod is fixed to the connecting surface end, and the other end of the L-shaped connecting rod is fixed to the handle rod.
4. The pre-chopping device for hard nuclear cataract according to claim 3, characterized in that: The handle rod is sleeved with an anti-slip protective sleeve.