Ophthalmology scalpel with angle-adjustable scalpel head

Abstract

The utility model discloses an ophthalmologic scalpel with an adjustable scalpel head angle, which comprises a scalpel handle and a scalpel head connected with the scalpel handle in a swinging manner through an adjusting mechanism, the adjusting mechanism comprises a turntable, an angle adjusting mechanism, an angle adjusting mechanism and an angle adjusting mechanism, and the turntable is rotatably arranged in the scalpel handle; the tool bit is fixedly connected to the turntable; the push block is arranged on the cutter handle in a sliding manner and is connected with the turntable through a push rod; and when the push block slides, the push rod can push the turntable to rotate, so that the tool bit swings. The angle of the scalpel head can be adjusted by pushing the push block back and forth, the operation is simple and convenient, the operation can be completed by a single hand in the operation process, and a guarantee is provided for smooth operation.

Description

Technical Field

[0001] The utility model relates to an ophthalmic scalpel with an adjustable blade angle. Background Art

[0002] In ophthalmic surgery, it is often necessary to use a handheld scalpel to cut various soft tissues of the patient's eye. During cutting, due to the different cutting parts or different knife-holding habits of different surgeons, the blade angle of the scalpel needs to be adjusted. For this reason, the patented technology with patent number CN202321052820.6 discloses an ophthalmic scalpel with an angle positioning function. This technology releases the position restriction of the blade by rotating the rotating pin, and then rubs the push block to drive the fixed block to move through the connecting rod, thereby releasing the restriction on the limiting disc, and then rotating the limiting disc to drive the blade to rotate through the rotating shaft to achieve the adjustment of the blade angle. However, this technology is more complicated to operate when adjusting the blade angle. When the blade angle needs to be adjusted during the operation, it is not easy to complete the operation with one hand, which affects the smooth progress of the operation to a certain extent. Utility Model Content

[0003] In order to solve the above problems, the present application provides an ophthalmic scalpel with adjustable blade angle. The blade angle can be adjusted by simply pushing the push block back and forth. The operation is simple and convenient and can be completed with one hand, which provides a guarantee for the smooth progress of the operation.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An ophthalmic scalpel with an adjustable blade angle comprises a handle, an adjustment mechanism and a blade, wherein the adjustment mechanism comprises:

[0006] A turntable is rotatably arranged in the knife handle; the knife head is fixedly connected to the turntable;

[0007] The push block is slidably arranged on the knife handle and is connected to the turntable through a push rod; when the push block slides, the turntable is pushed to rotate through the push rod to make the knife head swing.

[0008] As an implementation scheme, an adjustment slot is provided on the side wall of the knife handle, and a mounting shaft slide groove is provided on both sides of the adjustment slot inside the knife handle; two connecting plates are arranged at intervals on the push block, and the two connecting plates pass through the adjustment slot and extend into the knife handle; and, a mounting shaft is passed through the two connecting plates, and the two ends of the mounting shaft can be slidably installed in the two mounting shaft slide grooves respectively; a connecting shaft is connected between the two connecting plates, and the push rod is connected to the connecting shaft.

[0009] As an implementation scheme, the turntable is rotatably mounted inside the front end of the knife handle through a pin shaft, a pin is provided on the turntable, and the push rod is movably connected to the pin; the front end of the knife handle is open, and the connecting end of the knife head is fixedly connected to the turntable after passing through the opening.

[0010] As an implementation scheme, a plurality of slots are provided on the knife handle along the sliding direction of the push block, and a locking portion matching the slots is provided at the rear end of the push block; the connecting plate can swing with the mounting shaft as a fulcrum, and the locking portion can be engaged with or separated from the slots when the connecting plate swings; a torsion spring is provided on the mounting shaft for pushing the connecting plate to swing so that the locking portion is engaged with the slots; the push rod is movably connected to the connecting shaft.

[0011] As an implementation solution, two mounting plates are provided inside the tool handle and are located on both sides of the adjustment slot respectively, and the two mounting shaft slots are respectively provided on the two mounting plates.

[0012] As an implementation solution, a protrusion is provided at the front end of the connecting plate.

[0013] As an implementation solution, the cutter head includes a connector connected to the turntable, and a blade mounted on the connector.

[0014] As an implementation solution, a mounting platform is provided on the connector, and a bayonet that cooperates with the mounting platform is provided on the blade.

[0015] As an implementation scheme, the mounting platform includes a mounting platform wide portion, a mounting platform first narrow portion, and a mounting platform second narrow portion connected in sequence; the bayonet includes a bayonet wide portion, a bayonet first narrow portion, and a bayonet second narrow portion connected in sequence; the bayonet first narrow portion cooperates with the mounting platform first narrow portion, and the bayonet second narrow portion cooperates with the mounting platform second narrow portion.

[0016] A mounting platform stopper is provided on the first narrow portion of the mounting platform and / or the second narrow portion of the mounting platform, and a blade stopper abutting against the mounting platform stopper is provided on the first narrow portion of the bayonet and / or the second narrow portion of the bayonet.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] (1) The utility model can adjust the angle of the blade by pushing the push block forward and backward. The operation is simple and convenient. The operation can be completed with one hand during the operation, which provides a guarantee for the smooth progress of the operation.

[0019] (2) The blade and the connector of the present invention are detachably connected, making it convenient to replace the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the main view of an embodiment of the present utility model.

[0021] Figure 2 This is the main view of the embodiment of the utility model after the angle of the cutter head is adjusted.

[0022] Figure 3 for Figure 1 Cross-sectional view at AA in the middle.

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0024] Figure 5 for Figure 3 Enlarged schematic diagram of point B in the middle.

[0025] Figure 6 This is a front view of the cutter head in the embodiment of the present invention.

[0026] Figure 7 This is a front view of the blade in the embodiment of the present invention.

[0027] Figure 8 This is a front view of the connector in an embodiment of the present invention.

[0028] The figure marks in the above drawings are: 100-handle, 200-cutting head, 210-connecting head, 211-mounting platform wide part, 212-mounting platform first narrow part, 213-mounting platform second narrow part, 214-mounting platform baffle, 215-mounting platform, 220-blade, 221-bayonet wide part, 222-bayonet first narrow part, 223-bayonet second narrow part, 224-blade baffle, 225-bayonet, 300-adjustment mechanism, 310-push block, 311-protrusion, 312-clamping part, 313-connecting plate, 320-mounting shaft, 330-connecting shaft, 340-push rod, 350-mounting plate, 351-mounting shaft slide groove, 360-torsion spring, 370-turntable, 371-pin, 380-pin shaft, 400-adjustment slot, 500-card slot. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings and embodiments.

[0030] Example

[0031] like Figure 1 As shown, this embodiment discloses an ophthalmic scalpel with adjustable blade angle, which includes a handle 100 and a blade 200 connected to the handle 100 via an adjustment mechanism 300. The adjustment mechanism 300 can drive the blade 200 to swing, thereby adjusting the angle of the blade 200.

[0032] like Figure 3 、 4 As shown, the adjustment mechanism 300 includes a turntable 370, a push block 310, and a push rod 340. The handle 100 has a mounting cavity within it, and an opening at the front end of the handle 100 communicates with the mounting cavity. The turntable 370 is rotatably mounted at the front end of the mounting cavity of the handle 100 via a pin 380. The connecting end of the cutter head 200 passes through the opening of the handle and is fixedly connected to the turntable 370. As the turntable 370 rotates, the cutter head 200 swings with it, thereby achieving angle adjustment of the cutter head 200.

[0033] In addition, the push block 310 is slidably disposed on the handle 100 and is connected to the turntable 370 via the push rod 340. Figure 5 As shown, the sidewall of the handle 100 is provided with an adjustment slot 400, which communicates with the mounting cavity. Furthermore, two mounting plates 350 are disposed within the handle 100, one on either side of the adjustment slot 400. Each mounting plate 350 is provided with a mounting shaft slot 351, which extends along the length of the handle 100. Correspondingly, two connecting plates 313 are spaced apart on the push block 310. The two connecting plates 313 extend through the adjustment slot 400 and into the mounting cavity of the handle 100. A mounting shaft 320 is provided on the two connecting plates 313, and the two ends of the mounting shaft 320 are slidably installed in the two mounting shaft grooves 351 respectively; that is, sliders are installed at both ends of the mounting shaft 320, and the mounting shaft 320 is installed on the mounting shaft groove 351 through the sliders. In this way, the mounting shaft 320 can move along the mounting shaft groove 351 but cannot rotate, and the push block 310 can move along the adjustment slot 400.

[0034] like Figure 5 As shown, a connecting shaft 330 is connected between the two connecting plates 313, and a push rod 340 is connected to the connecting shaft 330. Figure 4 As shown, a pin 371 is provided on the turntable 370, and the push rod 340 is movably connected to the pin 371. In this way, when the push block 310 is pushed forward, the push block 310 pushes the turntable 370 to rotate through the push rod 340, thereby causing the cutter head 200 to swing, thereby achieving angle adjustment of the cutter head 200, as shown in FIG. Figure 2 shown.

[0035] To secure the push block 310, the handle 100 is provided with a plurality of slots 500 along the sliding direction of the push block 310, i.e., the slots 500 are distributed along the adjustment slot 400. Accordingly, the rear end of the push block 310 is provided with a snap-fit ​​portion 312 that snaps into the slots 500. A clearance fit is provided between the connecting plate 313 and the mounting shaft 320, allowing the connecting plate 313 to swing about the mounting shaft 320, i.e., the entire push block 310 to swing back and forth about the mounting shaft 320. When the rear end of the push block 310 swings downward, the snap-fit ​​portion 312 snaps into the slots 500, securing the push block 310. When the rear end of the push block 310 swings upward, the snap-fit ​​portion 312 disengages from the slots 500, releasing the push block 310.

[0036] Furthermore, a torsion spring 360 is mounted on the mounting shaft 320. This torsion spring 360 pushes the front end of the push block 310 upward, causing the rear end of the push block 310 to swing downward, thereby keeping the engaging portion 312 engaged within the slot 500. To move the push block 310, a finger presses the front end of the push block 310, causing the rear end of the push block 310 to lift upward and disengage the engaging portion 312 from the slot 500. The push block 310 can then be pushed to adjust the angle of the cutter head 200. Once the angle of the cutter head 200 is adjusted, the push block 310 is released. The torsion spring 360 pushes the rear end of the push block 310 downward again, causing the engaging portion 312 to engage within the corresponding slot 500. To allow the push block 310 to swing, a clearance fit can be provided between the push rod 340 and the connecting shaft 330 to allow for swinging.

[0037] As an implementation of this embodiment, the front end of the connecting plate 313 is provided with a protrusion 311, which can facilitate pushing the push block 310. In addition, the surface of the push block 310 can also be provided with anti-slip grooves.

[0038] In this embodiment, the angle of the blade head can be adjusted by pushing the push block 310 forward and backward. The operation is simple and convenient, and can be completed with one hand during the operation, thus ensuring the smooth progress of the operation.

[0039] As another implementation of this embodiment, Figure 6 As shown, the cutter head 200 includes a connector 210 connected to the turntable 370 and a blade 220 mounted on the connector 210. Specifically, the connector 210 is provided with a mounting platform 215, and the blade 220 is provided with a bayonet 225 that cooperates with the mounting platform 215. Figure 7 、 8 shown.

[0040] The mounting platform 215 includes a wide mounting platform portion 211, a first narrow mounting platform portion 212, and a second narrow mounting platform portion 213, which are connected in sequence. The bayonet 225 includes a wide bayonet portion 221, a first narrow bayonet portion 222, and a second narrow bayonet portion 223, which are connected in sequence. The second narrow bayonet portion 223 is located near the tip of the blade 220. The first narrow bayonet portion 222 is capable of mating with the first narrow mounting platform portion 212, while the second narrow bayonet portion 223 is capable of mating with the second narrow mounting platform portion 213.

[0041] A mounting platform baffle 214 is provided on the mounting platform 215, and the mounting platform baffle 214 can be provided on the first narrow portion 212 of the mounting platform and / or the second narrow portion 213 of the mounting platform. Correspondingly, a blade baffle 224 is provided on the bayonet 225, and the blade baffle 224 can be provided on the first narrow portion 222 of the bayonet and / or the second narrow portion 223 of the bayonet, and the blade baffle 224 can cooperate with the mounting platform baffle 214.

[0042] With the above structure, when the blade 220 needs to be installed on the mounting platform 215, the wide portion 221 of the bayonet is first placed on the mounting platform 215, and the blade 220 is pushed backward so that the second narrow portion 213 of the mounting platform is clamped in the second narrow portion 223 of the bayonet, and the first narrow portion 212 of the mounting platform is clamped in the first narrow portion 222 of the bayonet. At the same time, the blade stopper 224 and the mounting platform stopper 214 are overlapped front to back, so that the blade 220 can be firmly installed on the connector 210. When the blade 220 needs to be removed, the blade 220 can be pulled forward with a tool. At this time, the second narrow portion 213 of the mounting platform is disengaged from the second narrow portion 223 of the bayonet, and the first narrow portion 212 of the mounting platform is disengaged from the first narrow portion 222 of the bayonet. The blade stopper 224 and the mounting platform stopper 214 are misaligned, and the blade 220 can be removed from the connector 210.

[0043] According to the above embodiments, the present invention can be better implemented.

Claims

1. An ophthalmic surgical knife with an adjustable blade angle, comprising a handle (100), an adjustment mechanism (300) and a blade (200), characterized in that: The regulating mechanism (300) comprises: A turntable (370) is rotatably disposed in the tool handle (100); the tool head (200) is fixedly connected to the turntable (370); The push block (310) is slidably arranged on the knife handle (100) and is connected to the turntable (370) through the push rod (340); when the push block (310) slides, the push rod (340) pushes the turntable (370) to rotate, so that the knife head (200) swings.

2. The ophthalmic scalpel with adjustable blade angle according to claim 1, characterized in that: An adjusting slot (400) is provided on the side wall of the knife handle (100), and a mounting shaft slide groove (351) is provided on both sides of the adjusting slot (400) inside the knife handle (100); two connecting plates (313) are arranged at intervals on the push block (310), and the two connecting plates (313) pass through the adjusting slot (400) and extend into the knife handle (100); and a mounting shaft (320) is passed through the two connecting plates (313), and the two ends of the mounting shaft (320) are respectively slidably installed in the two mounting shaft slide grooves (351); a connecting shaft (330) is connected between the two connecting plates (313), and the push rod (340) is connected to the connecting shaft (330).

3. The ophthalmic scalpel with adjustable blade angle according to claim 2, characterized in that: The turntable (370) is rotatably mounted inside the front end of the knife handle (100) via a pin shaft (380); a pin (371) is provided on the turntable (370), and the push rod (340) is movably connected to the pin (371); the front end of the knife handle (100) is open, and the connecting end of the knife head (200) passes through the opening and is fixedly connected to the turntable (370).

4. The ophthalmic scalpel with adjustable blade angle according to claim 2, characterized in that: The knife handle (100) is provided with a plurality of slots (500) along the sliding direction of the push block (310); the rear end of the push block (310) is provided with a snap-fitting portion (312) matching the slot (500); the connecting plate (313) can swing with the installation shaft (320) as a fulcrum, and the snap-fitting portion (312) can be engaged with or separated from the slot (500) when the connecting plate (313) swings; the installation shaft (320) is provided with a torsion spring (360) for pushing the connecting plate (313) to swing so that the snap-fitting portion (312) is engaged with the slot (500); the push rod (340) is movably connected to the connecting shaft (330).

5. The ophthalmic scalpel with adjustable blade angle according to claim 2, characterized in that: Two mounting plates (350) are provided inside the knife handle (100) and are respectively located on both sides of the adjustment slot hole (400), and the two mounting shaft sliding grooves (351) are respectively provided on the two mounting plates (350).

6. The ophthalmic scalpel with adjustable blade angle according to any one of claims 2 to 5, characterized in that: A protrusion (311) is provided at the front end of the connecting plate (313).

7. The ophthalmic scalpel with adjustable blade angle according to claim 1, characterized in that: The cutter head (200) includes a connecting head (210) connected to a rotating disk (370), and a blade (220) mounted on the connecting head (210).

8. The ophthalmic scalpel with adjustable blade angle according to claim 7, characterized in that: The connector (210) is provided with a mounting platform (215), and the blade (220) is provided with a bayonet (225) that cooperates with the mounting platform (215).

9. The ophthalmic scalpel with adjustable blade angle according to claim 8, characterized in that: The mounting platform (215) comprises a mounting platform wide portion (211), a mounting platform first narrow portion (212), and a mounting platform second narrow portion (213) connected in sequence; the bayonet (225) comprises a bayonet wide portion (221), a bayonet first narrow portion (222), and a bayonet second narrow portion (223) connected in sequence; the bayonet first narrow portion (222) cooperates with the mounting platform first narrow portion (212), and the bayonet second narrow portion (223) cooperates with the mounting platform second narrow portion (213).

10. The ophthalmic scalpel with adjustable blade angle according to claim 9, characterized in that: A mounting platform stopper (214) is provided on the first narrow portion (212) of the mounting platform and / or the second narrow portion (213) of the mounting platform, and a blade stopper (224) is provided on the first narrow portion (222) of the bayonet and / or the second narrow portion (223) of the bayonet to abut against the mounting platform stopper (214).

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