Self-locking ophthalmic scalpel

Abstract

The invention discloses a self-locking ophthalmologic scalpel, and relates to the technical field of ophthalmologic scalps.The self-locking ophthalmologic scalpel comprises a scalpel handle and a scalpel head, a rotary conversion head is arranged between the scalpel head and the scalpel handle, a switching rod matched with the rotary conversion head in size is arranged at one end of the scalpel head, and positioning assemblies used for fixing the switching rod are arranged on the two sides of the rotary conversion head; the end, away from the tool bit, of the rotary conversion head is rotationally connected to the tool handle through a rotary shaft, the rotary conversion head and the tool handle are provided with rotary connecting assemblies used for being connected with the rotary shaft, and the position, corresponding to the rotary shaft, of the rotary conversion head is provided with a self-locking assembly used for locking after the tool bit rotates by an angle. The ophthalmology scalpel has the scalpel head replacing function, the scalpel head angle rotating function and the scalpel head rotating self-locking function, the scalpel head of the ophthalmology scalpel is easy to replace, rotate and adjust, all clinical surgical operation requirements can be met, the operation process is simple and rapid, and the use cost can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of ophthalmic scalpels, and in particular relates to a self-locking ophthalmic scalpel. Background Art

[0002] Cataract is the most important cause of blindness in the world. It is the number one eye disease in my country and a curable blindness. During the treatment, an ophthalmic scalpel is needed. Ophthalmic scalpel is an essential tool for ophthalmic microsurgery, especially cataract surgery. It is divided into two types: disposable and reusable. Both types are composed of a blade and a handle. The front end of the blade is a blade, which is the cutting part. The shape and size of the blade vary according to the needs of the operation. Some blades are very small and suitable for fine cutting, while others are wider and suitable for larger incisions. The design of the blade also varies. Some are straight, some are curved, and some have specific angles or shapes to adapt to different surgical operations. The handle is the part that the user holds to control the movement of the blade.

[0003] The shortcomings of the ophthalmic scalpels currently on the market are: 1. The blade cannot be rotated. The ophthalmic scalpel will design the bending part on the blade, so that one specification is matched with one angle, such as 30°, 45°, 60°, etc. If the user needs to use an ophthalmic scalpel with other angles in clinical use, he must open another model. 2. The blade cannot be replaced. Ophthalmic scalpels use one model with one blade, such as puncture knives, tunnel knives, spear knives, side cutters, pterygium knives, etc. Different types of blades are suitable for different surgical operations. Generally, users will prepare a variety of ophthalmic scalpels needed for surgery in advance. If the inventory cannot cover all models and specifications of ophthalmic scalpels, it may affect the user's lack of matching knives for different surgical operations during the operation, resulting in the operation not achieving the expected results or more serious failure of the operation, causing the patient to receive irreversible pain and damage. If other conditions arise during surgery and blades of other angles and styles are required, but they are not available in the operating room, the patient needs to go to the warehouse to get them, which will prolong the operation time and may lead to unpredictable risks for the patient. The blade replacement operation is cumbersome and complicated, and may even require professionals or users who have undergone multiple trainings to complete the corresponding functional operations. 3. High cost of use. Since the blade cannot be rotated and replaced, multiple ophthalmic scalpels may be needed for one operation, resulting in higher surgical costs for the patient.

[0004] In view of the above problems, the inventors have proposed an ophthalmic scalpel with a self-locking, rotatable and replaceable blade. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that the blade cannot be rotated, the blade cannot be replaced, and the use cost is high, and a self-locking ophthalmic scalpel is proposed. The self-locking ophthalmic scalpel has the function of blade replacement, blade angle rotation and blade rotation self-locking, so that the blade of the ophthalmic scalpel is easy to replace and rotate and adjust, which can reduce the use cost.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A self-locking ophthalmic scalpel is designed, comprising a handle and a blade head, a rotary conversion head is arranged between the blade head and the handle, a switching rod matched with the size of the rotary conversion head is arranged at one end of the blade head, positioning components for fixing the switching rod are arranged on both sides of the rotary conversion head, one end of the rotary conversion head away from the blade head is rotatably connected to the handle through a rotating shaft, a rotary connection component for connecting the rotating shaft is arranged on the rotary conversion head and the handle, and a self-locking component for locking the blade head after rotating an angle is arranged on the rotary conversion head at a position corresponding to the rotating shaft.

[0008] Furthermore, the positioning assembly includes a plunger spring, and positioning grooves for fixing the plunger spring are provided on both sides of the rotary conversion head. The ball head end of the plunger spring is located inside the rotary conversion head, and locking grooves matching the size of the ball head of the plunger spring are provided on both sides of the switching rod.

[0009] Furthermore, the rotating connection assembly includes a tool handle rotating wheel and a tool head rotating wheel, the tool handle rotating wheel is fixedly arranged on both sides of the end of the tool handle, the rotating shaft is axially movable on the tool handle rotating wheel, and the tool head rotating wheel is rotatably connected to the rotating shaft.

[0010] Furthermore, a shaft fixing groove is provided on at least one side of the tool handle rotating wheel, and one end of the shaft corresponding to the shaft fixing groove is provided with a rotation fixing surface adapted to the shaft fixing groove, and the end of the shaft with the rotation fixing surface is inserted into the shaft fixing groove.

[0011] Furthermore, shaft rotation holes are provided on the cutter head rotating wheels on both sides, the shaft rotation hole on one side is a through hole, and the other side is a blind hole, and a pressing spring is provided in the shaft rotation hole on one side of the blind hole, one end of the shaft is arranged on the pressing spring, and the other end extends to the outside of the cutter head rotating wheel to form a function button.

[0012] Furthermore, a C-shaped retaining spring is clamped on the rotating shaft, and the C-shaped retaining spring is located between the tool handle rotating wheel and the tool head rotating wheel.

[0013] Furthermore, the self-locking component includes a rotating chuck, which is fixedly arranged on the rotating conversion head. The rotating chuck is provided with a first angle limit surface on one side corresponding to the rotating shaft, and a plurality of second angle limit surfaces are provided on the circumference of the rotating shaft corresponding to the first angle limit surface. The plurality of second angle limit surfaces correspond to different rotation angles of the tool handle, and the rotation angle is between 0° and 90°.

[0014] Furthermore, the first angle limiting surface and the second angle limiting surface are planar structures and fit each other after being butted.

[0015] Furthermore, a ring-shaped cutter head rotation groove is provided on one side of the rotating shaft located on the rotating chuck. After the rotating shaft is pressed, the rotating chuck enters the cutter head rotation groove for rotating the cutter head. After the rotating shaft is released, the rotating chuck disengages from the cutter head rotation groove and causes the angle limit surface to be clamped on the axial surface of the rotating shaft.

[0016] Compared with the prior art, the self-locking ophthalmic scalpel proposed by the present invention has the following beneficial effects: the present invention has the functions of blade replacement, blade angle rotation and blade rotation self-locking, so that the blade of the ophthalmic scalpel is easy to replace and rotate, which can meet all clinical surgical operation requirements, the operation process is simple and fast, and the use cost can be reduced. Specifically:

[0017] (1) The present invention has a blade replacement function. The user only needs to pull out or insert the required blade, and the blade can be fixed and locked by itself. The direction of the blade fixing force is perpendicular to the direction of the insertion and extraction force, and the mutual influence is small. The user does not need to use a lot of force to pull out the blade. The blade can be replaced with different styles to meet the needs of various clinical procedures.

[0018] (2) The blade head of the present invention can be rotated to different commonly used angles to meet all clinical surgical operation requirements.

[0019] (3) The present invention provides a rotating chuck and multiple angle limit surfaces to enable the ophthalmic scalpel to have a self-locking function for the blade rotation. The user presses a function button to rotate the blade to a desired angle, and releases the function button. The blade can be fixed and locked by itself, thus achieving self-locking rotation of the blade. The blade will not shake due to the unlimited rotation angle, affecting the safety of the operation.

[0020] (4) The cutter head of the present invention is easy to rotate and does not require operation by the manufacturer or professionals. The user can rotate the cutter head angle by pressing and releasing a button after reading the product manual or receiving product training. The operation process is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the split structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the position limiting between the rotating chuck and the rotating shaft in the present invention;

[0026] Figure 5 It is a schematic diagram of the pressing shaft in the present invention;

[0027] The markings in the figure are: 1. tool handle; 11. tool handle rotating wheel; 12. shaft fixing groove; 2. tool head; 21. switching lever; 22. locking groove; 3. rotation conversion head; 31. positioning groove; 32. tool head rotating wheel; 33. shaft rotating hole; 34. rotating chuck; 35. first angle limiting surface; 4. plunger spring; 41. locking tongue; 5. shaft; 51. tool head rotating groove; 52. rotation fixing surface; 53. second angle limiting surface; 6. pressing spring; 7. C-type retaining spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The structural features of the present invention are now described in detail with reference to the accompanying drawings.

[0032] See also Figure 1-Figure 5 A self-locking ophthalmic scalpel comprises a handle 1 and a blade 2. A rotary conversion head 3 is arranged between the blade 2 and the handle 1. The front end of the rotary conversion head 3 is a tubular structure for inserting the blade 2. The blade 2 can be replaced with different types according to the needs of clinical procedures, such as a main cutter, a tunnel knife, a spear-shaped knife, a side cutter, etc. A switching rod 21 matching the size of the rotary conversion head 3 is arranged at one end of the blade 2. The diameter of the switching rod 21 matches the inner diameter of the tubular shape at the front end of the rotary conversion head 3, so that it can be stably inserted. In order to fix the cutter head 2, positioning components for fixing the switching rod 21 are provided on both sides of the rotary conversion head 3, wherein the positioning components include a plunger spring 4, and positioning grooves 31 for fixing and installing the plunger spring 4 are provided on both sides of the rotary conversion head 3, the ball head end of the plunger spring 4 is located inside the rotary conversion head 3, and locking grooves 22 adapted to the size of the ball head of the plunger spring 4 are provided on both sides of the switching rod 21. Specifically, when disassembling, hold the tail end root of the cutter head 2 and directly pull out from the rotary conversion head 3. Textures can be provided at the tail end of the cutter head 2 to increase the holding friction, which helps to hold and prevent slipping and being scratched by the blade. When installing, hold the tail end root of other models of cutter heads 2 and insert them into the rotary conversion head 3. After hearing a "click" sound, the locking and fixation is completed. At this time, the spring in the plunger spring 4 pushes the ball head plunger at the front end to engage in the locking groove 22.

[0033] The end of the rotary conversion head 3 away from the cutter head 2 is rotatably connected to the handle 1 through the rotating shaft 5. The rotary conversion head 3 and the handle 1 are provided with a rotary connection assembly for connecting the rotating shaft 5. The rotary connection assembly includes a handle rotating wheel 11 and a cutter head rotating wheel 32. The handle rotating wheel 11 is fixedly arranged on both sides of the end of the handle 1. The rotating shaft 5 is axially movable on the handle rotating wheel 11, and the cutter head rotating wheel 32 is rotatably connected to the rotating shaft 5. Specifically, when in use, the cutter head 2 and the rotary conversion head 3 can be rotated at any angle around the rotating shaft 5, so as to adjust the angle of the cutter head 2.

[0034] In order to fix the cutter head 2 after rotation, a shaft fixing groove 12 is provided on at least one side of the handle rotating wheel 11, and a rotating fixing surface 52 adapted to the shaft fixing groove 12 is provided at one end of the shaft 5 corresponding to the shaft fixing groove 12, and one end of the shaft 5 with the rotating fixing surface 52 is inserted into the shaft fixing groove 12, so that the shaft 5 and the handle rotating wheel 11 do not rotate, but can move left and right in the axial direction. The cutter head rotating wheels 32 on both sides are provided with shaft rotating holes 33, the shaft rotating hole 33 on one side is a through hole, and the other side is a blind hole, and a pressing spring 6 is provided in the shaft rotating hole 33 on one side of the blind hole, one end of the shaft 5 is arranged on the pressing spring 6, and the other end extends to the outside of the cutter head rotating wheel 32 to form a function button. In order to prevent the shaft 5 from being separated from the handle rotating wheel 11, a C-shaped retaining spring 7 is clamped on the shaft 5, and the C-shaped retaining spring 7 is located between the handle rotating wheel 11 and the cutter head rotating wheel 32. A self-locking component for locking the cutter head 2 after the cutter head 2 is rotated is provided at a position corresponding to the rotating shaft 5 on the rotating conversion head 3. The self-locking component includes a rotating chuck 34, which is fixedly arranged on the rotating conversion head 3. A first angle limiting surface 35 is provided on the side of the rotating chuck 34 corresponding to the rotating shaft 5. A plurality of second angle limiting surfaces 53 are provided at positions corresponding to the first angle limiting surface 35 on the circumference of the rotating shaft 5. The plurality of second angle limiting surfaces 53 correspond to different rotation angles of the cutter head 1, and the rotation angles are between 0° and 90°, such as the commonly used 30°, 45°, 60°, etc. The first angle limiting surface 35 and the second angle limiting surface 53 are planar structures, and fit each other after docking. A ring-shaped cutter head rotation groove 51 is provided on one side of the rotating shaft 5 located at the rotating chuck 34. After the rotating shaft 5 is pressed, the rotating chuck 34 enters the cutter head rotation groove 51 for rotating the cutter head 2. After the rotating shaft 5 is released, the rotating chuck 34 is disengaged from the cutter head rotation groove 51, and the rotating chuck 34 is clamped on the axial surface of the rotating shaft 5, so that the first angle limit surface 35 and the second angle limit surface 53 are fitted together to play a limiting role. Specifically, when the cutter head 2 and the tool handle 1 are in a horizontal state, the first angle limit surface 35 corresponds to the second angle limit surface 53 in a vertical state. At this time, the cutter head 2 corresponds to an angle of 0°. The function button of the rotating shaft 5 is pressed to make the rotating chuck 34 on the rotary conversion head 3 enter the cutter head rotating groove 51 on the rotating shaft 5, and the limiting effect of the rotating chuck 34 on the rotary conversion head 3 is released, so that the cutter head 2 can rotate. The cutter head 2 is rotated to the required angle so that the first angle limit surface 35 corresponds to the second angle limit surface 53 at other angles, and then the rotating shaft 5 is released to make it rebound under the action of the pressing spring 6, so that the first angle limit surface 35 on the rotating chuck 34 automatically clamps the rotating shaft 5, thereby realizing the angle limit fixation and completing the locking fixation.

[0035] The self-locking ophthalmic scalpel of the present invention has the functions of blade replacement, blade angle rotation and blade rotation self-locking, so that the blade of the ophthalmic scalpel is easy to replace and easy to rotate and adjust, which can meet all clinical surgical operation requirements. The operation process is simple and fast, and the use cost can be reduced. On the one hand, the user only needs to pull out or insert the required blade 2, and the blade 2 can be replaced with different models to meet the needs of various clinical procedures. On the other hand, during use, by setting a rotating chuck 34 and setting a plurality of second angle limit surfaces 53, the ophthalmic scalpel has a blade rotation self-locking function. The user presses the function button to rotate the blade 2 to the required angle, releases the function button, and the blade 2 can be fixed and locked by itself, realizing the self-locking rotation of the blade, and will not shake due to the unlimited position after the rotation angle, affecting the safety of the operation.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-locking ophthalmic surgical knife, comprising a knife handle (1) and a knife head (2), characterized in that: A rotation conversion head (3) is provided between the cutter head (2) and the cutter handle (1); A switching rod (21) having a size matching that of the rotary conversion head (3) is provided at one end of the cutter head (2), and positioning components for fixing the switching rod (21) are provided on both sides of the rotary conversion head (3); One end of the rotary conversion head (3) away from the cutter head (2) is rotatably connected to the cutter handle (1) via a rotating shaft (5); a rotary connection component for connecting the rotary shaft (5) is provided on the rotary conversion head (3) and the cutter handle (1); A self-locking component for locking the cutter head (2) after it has been rotated to a certain angle is provided at a position on the rotary conversion head (3) corresponding to the rotary shaft (5).

2. A self-locking ophthalmic scalpel according to claim 1, characterized in that: The positioning assembly comprises a plunger spring (4), positioning grooves (31) for fixing and installing the plunger spring (4) are provided on both sides of the rotation conversion head (3), the ball head end of the plunger spring (4) is located inside the rotation conversion head (3), and locking grooves (22) adapted to the size of the ball head of the plunger spring (4) are provided on both sides of the switching rod (21).

3. A self-locking ophthalmic scalpel according to claim 1, characterized in that: The rotary connection assembly comprises a tool handle rotating wheel (11) and a tool head rotating wheel (32); the tool handle rotating wheel (11) is fixedly arranged on both sides of the end of the tool handle (1); the rotating shaft (5) is axially movable on the tool handle rotating wheel (11); and the tool head rotating wheel (32) is rotatably connected to the rotating shaft (5).

4. A self-locking ophthalmic scalpel according to claim 3, characterized in that: A rotating shaft fixing groove (12) is provided on at least one side of the tool handle rotating wheel (11); one end of the rotating shaft (5) corresponding to the rotating shaft fixing groove (12) is provided with a rotating fixing surface (52) adapted to the rotating shaft fixing groove (12); and one end of the rotating shaft (5) with the rotating fixing surface (52) is inserted into the rotating shaft fixing groove (12).

5. The self-locking ophthalmic surgical knife according to claim 3, characterized in that: The cutter head rotating wheels (32) on both sides are provided with shaft rotating holes (33), the shaft rotating hole (33) on one side is a through hole, and the other side is a blind hole, a pressing spring (6) is provided in the shaft rotating hole (33) on one side of the blind hole, one end of the shaft (5) is arranged on the pressing spring (6), and the other end extends to the outside of the cutter head rotating wheel (32) to form a function button.

6. A self-locking ophthalmic surgical knife according to claim 3, characterized in that: The rotating shaft (5) is provided with a C-shaped retaining spring (7), and the C-shaped retaining spring (7) is located between the tool handle rotating wheel (11) and the tool head rotating wheel (32).

7. The self-locking ophthalmic surgical knife according to claim 1, characterized in that: The self-locking component comprises a rotating chuck (34), the rotating chuck (34) being fixedly arranged on the rotating conversion head (3), the rotating chuck (34) being provided with a first angle limiting surface (35) on one side corresponding to the rotating shaft (5), a plurality of second angle limiting surfaces (53) being provided on the circumference of the rotating shaft (5) at positions corresponding to the first angle limiting surface (35), the plurality of second angle limiting surfaces (53) corresponding to different rotation angles of the tool handle (1), the rotation angles being between 0° and 90°.

8. The self-locking ophthalmic surgical knife according to claim 7, characterized in that: The first angle limiting surface (35) and the second angle limiting surface (53) are planar structures and fit each other after being butted.

9. The self-locking ophthalmic surgical knife according to claim 8, characterized in that: A ring-shaped tool head rotation groove (51) is provided on the rotating shaft (5) on one side of the rotating chuck (34); after the rotating shaft (5) is pressed, the rotating chuck (34) enters the tool head rotation groove (51) for rotating the tool head (2); after the rotating shaft (5) is released, the rotating chuck (34) is disengaged from the tool head rotation groove (51) and the angle limiting surface (35) is clamped on the axial surface of the rotating shaft (5).

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