Cataract nucleus chopping knife

Abstract

The utility model relates to the technical field of cataract nucleus chopping knives, and discloses a cataract nucleus chopping knife which comprises a front end handle, a loading and unloading assembly is fixedly connected in the front end handle, a supporting rod is connected to one end of the front end handle in an inserted mode, and a nucleus chopping knife head is fixedly connected to one end of the supporting rod. The surface of the front-end handle is slidably connected with a lengthened handle, and one side of the lengthened handle is in threaded connection with a limiting assembly. According to the cataract nucleus chopping knife, through the arrangement of the limiting assembly, when the cataract nucleus chopping knife needs to be used, according to the length of a handle needing to be adjusted, a rotary knob is rotated, a threaded rod is driven to rotate and contract in a threaded hole, a pressurizing disc is moved away from the inner wall of a sliding groove, the lengthened handle is pulled to a proper position, and then the rotary knob is rotated, so that the threaded rod pushes the pressurizing disc to be extruded on the inner wall of the sliding groove; therefore, the effect of conveniently adjusting the length of the handle is achieved, a doctor can better improve operation comfort and operation control, and personal preference and operation requirements of the doctor are met.

Description

Technical Field

[0001] The utility model relates to the technical field of cataract nucleus splitting knives, in particular to a cataract nucleus splitting knife. Background Art

[0002] All kinds of reasons such as aging, heredity, local nutritional disorders, immune and metabolic abnormalities, trauma, poisoning, radiation, etc. can cause lens metabolism disorders, leading to lens protein denaturation and turbidity, which is called cataract. At this time, the light is blocked by the turbid lens and cannot be projected on the retina, resulting in blurred vision. The cataract splitter is a special tool used in cataract surgery. In cataract surgery, the doctor needs to remove the lens, which is a turbid eye tissue, and then replace it with an artificial lens. The splitter is a key tool in the operation, used to split and remove the core part of the lens.

[0003] The existing cataract splitting knife is not convenient for installing and disassembling the knife head during actual use, so it is not convenient for personnel to quickly replace the worn knife head.

[0004] After searching the existing patents: a cataract splitting knife (publication number: CN204364220U), the cataract splitting knife includes a handle, a knife bar and a knife neck, the handle, the knife bar and the knife neck are connected in sequence, a blade is arranged on the knife neck, the knife neck and the knife bar form an angle of 135°, a blunt hook is arranged at the end of the knife neck, the bending direction of the blunt hook is opposite to the bending direction of the knife neck relative to the knife bar, the angle between the blunt hook and the knife neck is 90°, and the knife bar, the knife neck, the blade and the blunt hook are all in the same plane. The splitting knife does not need to enter the anterior chamber from the main incision, does not damage the main incision, and has good stability of the anterior chamber; only one hand is required to operate at the same position, and both hands can operate at different positions, and there is enough operating space. The effect achieved by using the splitting knife of the utility model for small incision non-phacoemulsification extracapsular extraction is comparable to the effect achieved by phacoemulsification, so that cataract patients who cannot undergo phacoemulsification can also achieve better visual quality after surgery.

[0005] Although the above patent achieves the effect of small-incision non-phacoemulsification extracapsular extraction, which is comparable to the effect of phacoemulsification, and thus allows cataract patients who cannot undergo phacoemulsification to achieve better visual quality after surgery, it is not convenient to adjust the handle length, so that doctors can better improve operating comfort and surgical control to meet the doctor's personal preferences and surgical needs.

[0006] Therefore, it is necessary to invent a cataract splitting knife to solve the above problems. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] The technical problem solved by the utility model is to provide a cataract nucleus splitting knife which is highly practical, can be simply operated and has a relatively simple structure, thereby solving the problem of inconvenience in installing and disassembling the knife head and adjusting the handle length raised in the above-mentioned background technology.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a cataract nucleus splitting knife, including a front end handle, the interior of the front end handle is fixedly connected to a loading and unloading assembly, one end of the front end handle is plugged with a support rod, one end of the support rod is fixedly connected to a nucleus splitting knife head, the surface of the front end handle is slidably connected to an extension handle, one side of the extension handle is threadedly connected to a limiting assembly, and one end of the extension handle is plugged with a suspension structure.

[0011] As a further solution of the utility model, the loading and unloading assembly includes a pressure spring fixedly connected to the inside of the front handle, one end of the pressure spring is fixedly connected to a limiting ring, and a pin is sleeved inside the limiting ring to facilitate limiting fixation.

[0012] As a further solution of the utility model, the limit assembly includes a threaded rod threadedly connected to one side of the extended handle, one end of the threaded rod is fixedly connected to a pressure plate, and one end of the threaded rod is fixedly connected to a knob, and the pressure plate facilitates pressurization and fixation in the slide groove.

[0013] As a further solution of the utility model, a pull cap is fixedly connected to one end of the latch, and a knob facilitates the rotation of the threaded rod.

[0014] As a further solution of the utility model, a threaded hole compatible with the threaded rod is opened on one side of the extended handle, a sliding groove compatible with the pressure plate is opened on one side of the front handle, and a limiting hole compatible with the pin is opened on one side of the support rod, and the limiting hole facilitates the insertion of the pin.

[0015] As a further solution of the utility model, a frosted layer is fixedly connected to the surface of the front handle, and an anti-slip cover is fixedly connected to the surface of the extended handle, and the anti-slip cover is convenient for increasing friction.

[0016] (III) Beneficial effects

[0017] The utility model provides a cataract splitting knife, which has the following beneficial effects:

[0018] 1. The cataract core-splitting knife, through the setting of the loading and unloading components, when it is necessary to disassemble the core-splitting knife head, the pull cap is pulled to drive the pin to be pulled out, and then the pressure spring is deformed and contracted, so that the pin is pulled out from the limiting hole on the support rod, and the core-splitting knife head is pulled out from the front end handle. When it needs to be installed, the support rod at one end of the core-splitting knife head is inserted into the front end handle. When entering, the pin is squeezed outward and contracted, and the pressure spring is deformed by force to generate elastic force. When the pin slides to the limiting hole, the pressure spring pushes the limiting ring, so that the pin is inserted into the limiting hole, thereby achieving the effect of fixed installation, making it convenient for personnel to replace the worn knife head and improving the convenience of the core-splitting knife.

[0019] 2. The cataract splitting knife, through the setting of the limit component, can be used in accordance with the required handle length. The knob is turned to drive the threaded rod to rotate and contract in the threaded hole, the pressure plate is moved away from the inner wall of the slide groove, the extended handle is pulled to the appropriate position, and then the knob is turned to make the threaded rod push the pressure plate to squeeze on the inner wall of the slide groove, thereby achieving the effect of conveniently adjusting the handle length, allowing doctors to better improve operating comfort and surgical control to meet the doctor's personal preferences and surgical needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the loading and unloading components of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the suspension assembly of the utility model.

[0025] In the figure: 1. front handle; 2. loading and unloading assembly; 201. pressure spring; 202. limit ring; 203. latch; 3. support rod; 4. core splitting cutter head; 5. extended handle; 6. limit assembly; 601. threaded rod; 602. pressure plate; 7. suspension structure; 701. back cover; 702. suspension ring; 703. cover; 704. sliding plate; 705. telescopic hanging ring; 8. pull cap; 9. knob; 10. frosted layer; 11. anti-slip cover. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 5 The utility model provides a technical solution: a cataract nucleus splitting knife, comprising a front end handle 1, the interior of the front end handle 1 is fixedly connected with a loading and unloading assembly 2, and the setting of the loading and unloading assembly 2 achieves a fixed installation effect, which is convenient for personnel to replace worn blade heads and improves the convenience of the nucleus splitting knife. A support rod 3 is plugged into one end of the front end handle 1, and a nucleus splitting blade head 4 is fixedly connected to one end of the support rod 3. An extended handle 5 is slidably connected to the surface of the front end handle 1, and a limiting assembly 6 is threadedly connected to one side of the extended handle 5. Through the setting of the limiting assembly 6, the effect of conveniently adjusting the handle length is achieved, so that the doctor can better improve the operating comfort and surgical control to meet the doctor's personal preferences and surgical needs, and a suspension structure 7 is plugged into one end of the extended handle 5;

[0028] See also Figure 3 The loading and unloading assembly 2 includes a pressure spring 201 fixedly connected to the interior of the front handle 1, one end of the pressure spring 201 is fixedly connected to a limit ring 202, and a latch 203 is sleeved inside the limit ring 202. The setting of the latch 203 plays a role of limiting and fixing;

[0029] See also Figure 4 The limit assembly 6 includes a threaded rod 601 threadedly connected to one side of the extended handle 5, one end of the threaded rod 601 is fixedly connected to a pressure plate 602, and one end of the threaded rod 601 is fixedly connected to a knob 9. The setting of the pressure plate 602 plays a role in pressurizing and fixing the slide groove;

[0030] See also Figure 2 One end of the latch 203 is fixedly connected to a pull cap 8, which, through the setting of the knob 9, plays a role in rotating the threaded rod 601;

[0031] See also Figure 2 A threaded hole matching the threaded rod 601 is provided on one side of the extended handle 5, a sliding groove matching the pressure plate 602 is provided on one side of the front handle 1, and a limiting hole matching the latch 203 is provided on one side of the support rod 3. The setting of the limiting hole facilitates the insertion of the latch 203.

[0032] See also Figure 2 A frosted layer 10 is fixedly connected to the surface of the front handle 1, and an anti-slip cover 11 is fixedly connected to the surface of the extended handle 5. The anti-slip cover 11 is provided to increase friction.

[0033] Embodiment 1:

[0034] See also Figure 1 The suspension structure 7 includes a rear cover 701 plugged into one end of the extended handle 5, and a suspension ring 702 is fixedly connected to the back of the rear cover 701. The setting of the suspension ring 702 plays a role of supporting the suspension;

[0035] Embodiment 2:

[0036] See also Figure 5 The hanging structure 7 includes a cover 703 inserted into one end of the extended handle 5, and the interior of the cover 703 is slidably connected to a sliding plate 704, and one side of the sliding plate 704 is fixedly connected to a telescopic hanging ring 705. Through the setting of the telescopic hanging ring 705, it can be retracted when not in use to reduce the occupied space.

[0037] In the utility model, the working steps of the device are as follows:

[0038] Step 1: When the core splitting cutter head 4 needs to be disassembled, the pull cap 8 is pulled to drive the latch 203 to be pulled outward, and then the pressure spring 201 is deformed and contracted, so that the latch 203 is pulled out from the limiting hole on the support rod 3, and the core splitting cutter head 4 is pulled out from the front handle 1;

[0039] Step 2: When installation is required, insert the support rod 3 at one end of the core splitting cutter head 4 into the front handle 1, and squeeze the latch 203 to retract outwards when entering, and the pressure spring 201 is deformed by force to generate elastic force. When the latch 203 slides to the limiting hole, the pressure spring 201 pushes the limiting ring 202, so that the latch 203 is inserted into the limiting hole;

[0040] The third step: when it is needed, adjust the handle length as needed, turn the knob 9, drive the threaded rod 601 to rotate and contract in the threaded hole, move the pressure plate 602 away from the inner wall of the slide groove, pull the extended handle 5 to the appropriate position, and then turn the knob 9, so that the threaded rod 601 pushes the pressure plate 602 to squeeze on the inner wall of the slide groove.

[0041] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0042] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cataract chopping knife, comprising a front handle (1), characterized in that: The front end handle (1) is fixedly connected to a loading and unloading assembly (2) inside, a support rod (3) is inserted into one end of the front end handle (1), one end of the support rod (3) is fixedly connected to a core splitting cutter head (4), an extension handle (5) is slidably connected to the surface of the front end handle (1), one side of the extension handle (5) is threadedly connected to a limiting assembly (6), and one end of the extension handle (5) is inserted into a suspension structure (7).

2. A cataract chopping knife according to claim 1, characterized in that: The loading and unloading assembly (2) comprises a pressure spring (201) fixedly connected to the interior of the front handle (1); one end of the pressure spring (201) is fixedly connected to a limit ring (202); a latch (203) is sleeved inside the limit ring (202).

3. The cataract chopping knife according to claim 1, characterized in that: The limit assembly (6) comprises a threaded rod (601) threadedly connected to one side of the extended handle (5), one end of the threaded rod (601) is fixedly connected to a pressure plate (602), and one end of the threaded rod (601) is fixedly connected to a knob (9).

4. The cataract chopping knife according to claim 2, characterized in that: One end of the latch pin (203) is fixedly connected to a pull cap (8).

5. The cataract chopping knife according to claim 3, characterized in that: A threaded hole matched with the threaded rod (601) is provided on one side of the extended handle (5), a sliding groove matched with the pressure plate (602) is provided on one side of the front handle (1), and a limiting hole matched with the latch (203) is provided on one side of the support rod (3).

6. The cataract chopping knife according to claim 1, characterized in that: A frosted layer (10) is fixedly connected to the surface of the front handle (1), and an anti-slip cover (11) is fixedly connected to the surface of the extended handle (5).

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