CN111329652B - Capsule cutting device for cataract surgery - Google Patents

Abstract

The invention discloses a capsulotomy device for cataract surgery, which comprises a handle and a vertical cylinder, wherein the vertical cylinder is arranged inside the left side of the handle, the upper part of the outer wall of a first rotating shaft is rotatably connected with the handle through a third bearing, the outer wall of the first rotating shaft is fixedly connected with a first gear, the left side of the first gear is meshed and connected with a second gear, the inner wall of the second gear is fixedly connected with the vertical cylinder, and the inner wall and the outer wall of a fourth bearing are respectively fixedly connected with the vertical cylinder and the handle. This a cut bag device for cataract surgery, structure scientific and reasonable, convenience safe in utilization is provided with servo motor, cooperation between riser and the blade, make servo motor's output shaft drive first pivot and rotate, the first gear of first pivot accessible and second gear drive blade rotate simultaneously, patient's preceding membrane bag can be cut down to the pivoted blade, avoided prior art to carry out preceding membrane bag excision through the doctor is manual to doctor's requirement and the higher problem of clinical processing.

Description

A capsulotomy device for cataract surgery

technical field

The invention relates to the field of medical technology, in particular to a capsulotomy device for cataract surgery.

Background technique

Cataracts are the most common cause of blindness and visual disability. Clinically, cataracts are mainly treated by surgery, and the cure rate is relatively high. Removal of the anterior capsule is one of the most decisive steps in cataract extraction. Manual excision of the epimembrane sac by the doctor has high requirements for the doctor and clinical treatment. Too fast or unstable speed may easily cause damage to the patient's eyes, and it is not convenient to adapt to the size or adjustment of the epimembrane sac that needs to be removed for different patients. After the end, the blade cannot be supported with high stability, and the position of the blade changes due to the accidental contact with the driving part during use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a capsulotomy device for cataract surgery, so as to solve the problem of higher requirements and clinical treatment for doctors by manually performing capsulotomy by doctors in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a capsulotomy device for cataract surgery, comprising a handle and a vertical cylinder, the interior of the left side of the handle is provided with a vertical cylinder, and the interior of the left side of the handle is powered by The assembly is rotatably connected to the vertical cylinder;

The power assembly includes a first gear, a third bearing, a fourth bearing, a second gear, a servo motor and a first rotating shaft;

The servo motor is fixed on the left side of the inner wall of the handle, the output shaft of the servo motor is fixed with a first rotating shaft, the upper part of the outer wall of the first rotating shaft is connected with the handle in rotation through a third bearing, and the first rotating shaft is connected to the handle. The outer wall is fixed with a first gear, the left side of the first gear is meshed and connected with a second gear, the inner wall of the second gear is fixedly connected with the vertical cylinder, and the inner and outer walls of the fourth bearing are respectively connected with the vertical cylinder and the vertical cylinder. The handle is fixedly connected.

Preferably, the transmission ratio between the first gear and the second gear is 3:1.

Preferably, a limit component is installed above the vertical cylinder;

The limiting assembly includes a vertical rod, a top plate, a clamping block, a first spring, a slider, a handle and a second spring;

A plurality of vertical rods are fixed on the outer side of the lower end of the top plate, and the vertical rods and the vertical cylinder are all gap-fitted, a first spring is arranged below the vertical rod, and the upper and lower sides of the first spring are respectively connected with the vertical rods. It is fixedly connected with the vertical cylinder, and the left and right sides of the inside of the top plate are gap-fitted with a slider, the upper and lower ends of the slider are respectively fixed with a handle and a clamping block, and the clamping block and the upper end of the vertical cylinder are attached to each other. The inner side of the sliding block is provided with a second spring, and the inner and outer sides of the second spring are respectively fixedly connected with the top plate and the sliding block.

Preferably, an anti-skid cover for anti-skid is installed on the outer wall of the handle.

Preferably, the inclination of the inclined plane at the joint of the clamping block and the vertical cylinder is consistent.

Preferably, an engaging structure may be formed between the blocking block and the vertical cylinder.

Preferably, an adjustment component is installed inside the vertical cylinder;

The adjustment assembly includes a pin shaft, a sleeve plate, a support seat, a cross bar, a first bearing, a sleeve block, a friction plate, a screw rod, a second rotating shaft, a turning handle, a second bearing and a support rod;

A plurality of the transverse rods are respectively fixed inside the outer side of the lower end of the vertical cylinder, the outer walls of the transverse rods are all gap-fitted with sleeve blocks, the upper ends of the sleeve blocks are all fixed with support seats, and the upper parts of the support seats are all fixed. A support rod is provided, and both sides of the support rod are respectively connected to the sleeve plate and the support base in rotation through the pin shaft. The inner thread of the sleeve plate is connected with a screw rod, and the upper and lower sides of the outer wall of the screw rod pass through the first bearing. It is connected with the vertical cylinder in rotation, the lower part of the outer wall of the second shaft is connected with the top plate in rotation through the second bearing, the inner side of the second shaft and the screw is fixed with a friction plate, and the upper end of the outer wall of the second shaft is fixed with a friction plate. Multiple handlebars.

Preferably, the second rotating shaft and the screw have a higher level of coaxiality accuracy, and the vertical edge positions between the friction plates are consistent.

Preferably, a plurality of the sleeve blocks and the cross bars are distributed symmetrically with the vertical axis of the screw as a reference.

Preferably, an anti-skid pattern is processed on the right side of the outer wall of the handle.

Compared with the prior art, the beneficial effects of the present invention are: the capsulectomy device for cataract surgery has a scientific and reasonable structure, and is safe and convenient to use:

1. The capsulectomy device for cataract surgery is provided with a servo motor, a first rotating shaft, a second gear, a vertical cylinder and a blade, so that the output shaft of the servo motor drives the first rotating shaft to rotate, and the first rotating shaft rotates simultaneously. The rotating shaft can drive the blade to rotate through the first gear and the second gear, and the rotating blade can cut the patient's anterior membrane sac, which avoids the need for doctors and clinical treatment to be performed manually by the doctor in the prior art. The problem.

2. The capsular cutting device for cataract surgery is provided with the cooperation between the first gear, the second gear and the servo motor, so that due to the deceleration transmission of the first gear and the second gear, the speed is too fast or unstable. It is easy to cause damage to the patient's eyes.

3. The capsular cutting device for cataract surgery is provided with a turning handle, a screw, a sleeve, a blade, a strut, a sleeve, a pin, a friction plate and the front of the vertical cylinder. The user can turn the turning handle to make the The turning handle drives the screw to rotate, so that the sleeve moves on the outer wall of the screw, and then the sleeve drives multiple sleeves and blades to move synchronously through the strut, so that the diameter of the full circle formed by multiple blades can be adjusted to suit different patients. The size of the anterior membrane sac to be excised avoids the problem that the prior art is inconvenient to adapt to the size of the anterior membrane sac to be excised for different patients, or the blade cannot be supported with high stability after adjustment.

4. The capsular cutting device for cataract surgery is provided with a blade, a handle, a block, a vertical cylinder, a first spring, a friction plate, a screw and a second shaft. After adjusting the position of the blade, the Push the handle outwards, so that the handle can drive the blocking block to move outwards, and release the engaging structure between the blocking block and the vertical cylinder, and then the elastic force of the first spring can realize the reset between the two friction plates, so as to avoid the use of Accidentally touching the drive part causes the position of the blade to change.

5. The capsulectomy device for cataract surgery drives the blade to rotate through the first gear and the second gear, and the rotating blade can cut off the patient's anterior membrane sac, avoiding the need for a doctor to manually perform the anterior membrane sac in the prior art. The problem of high requirements for doctors and clinical treatment is removed, and at the same time, due to the deceleration transmission of the first gear and the second gear, it can avoid the problem of excessive speed or instability that may easily cause damage to the patient's eyes.

6. The capsulectomy device for cataract surgery, before the excision, the doctor can record the size of the patient's eyeball and then calculate the size of the anterior membrane sac that needs to be excised, and then press the top plate downward, so that the top plate can drive the vertical rod downward. Moving and squeezing the first spring, at the same time, the upper inner wall of the vertical cylinder can drive the block and the slider to move outward, and the block can be pulled back inward by the elastic force of the second spring at a specific position during the continuous downward movement of the block. , to realize the engagement between the block and the vertical cylinder, and at the same time, the friction plates can be moved to form a tight fit state. At this time, the user can turn the handle, so that the handle can drive the screw to rotate, so that the sleeve plate is in a state of close contact. The outer wall of the screw moves, so that the sleeve plate drives multiple sleeve blocks and blades to move synchronously through the strut, and the diameter of the full circle formed by the multiple blades can be adjusted to adapt to the size of the anterior membrane sac to be removed by different patients, avoiding the need for The prior art is inconvenient to adapt to the size of the anterior membrane sac that needs to be resected for different patients, or cannot support the blade with high stability after adjustment.

7. The capsulectomy device for cataract surgery can push the handle outward after adjusting the position of the blade, so that the handle can drive the blocking block to move outward, and release the engaging structure between the blocking block and the vertical cylinder. Resetting between the two friction plates is realized by the elastic force of the first spring, so that the position of the blade is prevented from being changed by mistakenly touching the driving part during use.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural schematic diagram of the vertical cylinder, the clamping block and the slider in Fig. 1;

Fig. 3 is the structural representation at the handle, vertical cylinder and sleeve block in Fig. 1;

4 is a schematic structural diagram of the handle, the first gear and the servo motor in FIG. 1;

FIG. 5 is a schematic structural diagram of the handle, the first spring and the fourth bearing in FIG. 1;

FIG. 6 is a schematic structural diagram of the vertical cylinder, the first bearing and the support seat in FIG. 1 .

In the figure: 1, handle, 2, limit component, 201, vertical rod, 202, top plate, 203, clip, 204, first spring, 205, slider, 206, handle, 207, second spring, 3, Adjustment assembly, 301, pin shaft, 302, sleeve plate, 303, support seat, 304, cross bar, 305, first bearing, 306, sleeve block, 307, friction plate, 308, screw rod, 309, second shaft, 310 , handle, 311, second bearing, 312, strut, 4, power assembly, 401, first gear, 402, third bearing, 403, fourth bearing, 404, second gear, 405, servo motor, 406 , The first shaft, 5, the anti-skid pattern, 6, the blade, 7, the vertical cylinder.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-6, the present invention provides a technical solution: a capsulotomy device for cataract surgery, comprising a handle 1 and a vertical cylinder 7, the left inner side of the handle 1 is provided with a vertical cylinder 7, and the limit handle 1 and The relative position of the vertical cylinder 7, the left interior of the handle 1 is rotatably connected to the vertical cylinder 7 through the power assembly 4. The power assembly 4 includes a first gear 401, a third bearing 402, a fourth bearing 403, a second gear 404, and a servo motor 405 and the first rotating shaft 406, the servo motor 405 is fixed on the left side of the inner wall of the handle 1, the model of the servo motor 405 is MAXON type, the output shaft of the servo motor 405 is fixed with the first rotating shaft 406, above the outer wall of the first rotating shaft 406 The third bearing 402 is rotatably connected to the handle 1, and the handle 1 can rotate and support the first rotating shaft 406. The outer wall of the first rotating shaft 406 is fixed with a first gear 401, and the left side of the first gear 401 is meshed and connected with a second gear. 404, the first shaft 406 can drive the vertical cylinder 7 to rotate through the transmission of the first gear 401 and the second gear 404, the inner wall of the second gear 404 is fixedly connected with the vertical cylinder 7, and the inner and outer walls of the fourth bearing 403 are respectively connected with the vertical cylinder 7. The barrel 7 is fixedly connected to the handle 1, and the handle 1 can rotatably support the fourth bearing 403. The transmission ratio between the first gear 401 and the second gear 404 is 3:1, and between the first gear 401 and the second gear 404 The transmission is a reduction transmission.

A limit assembly 2 is installed above the vertical cylinder 7. The limit assembly 2 includes a vertical rod 201, a top plate 202, a clamping block 203, a first spring 204, a slider 205, a handle 206 and a second spring 207. The lower end of the top plate 202 is fixed outside. A plurality of vertical rods 201 are connected, the top plate 202 can drive the vertical rods 201 to move, the vertical rods 201 and the vertical cylinder 7 are matched with a gap, a first spring 204 is arranged below the vertical rod 201, and the elastic coefficient K of the first spring 204 is 500N/m, the upper and lower sides of the first spring 204 are fixedly connected to the vertical rod 201 and the vertical cylinder 7 respectively, the vertical rod 201 can be moved downward to squeeze the first spring 204, and the left and right sides of the top plate 202 are gap-fitted with The slider 205, the slider 205 can move inside the top plate 202, the upper and lower ends of the slider 205 are respectively fixed with a handle 206 and a clamping block 203, the handle 206 and the clamping block 203 can drive the sliding block 205 to move, the clamping block 203 and the upper end of the vertical cylinder 7 are attached to each other, so that the blocking block 203 can be moved to the left under the influence of the vertical cylinder 7 by moving down. K is 300N/m. The inner and outer sides of the second spring 207 are fixedly connected to the top plate 202 and the slider 205 respectively. The slider 205 can be moved outward to stretch the second spring 207. The outer wall of the handle 206 is provided with anti-slip anti-skid Sleeve, the inclination of the inclined plane at the joint of the clamping block 203 and the vertical cylinder 7 is consistent to ensure that the vertical cylinder 7 drives the clamping block 203, and a clamping structure can be formed between the clamping block 203 and the vertical cylinder 7, so that the clamping block 203 and the vertical cylinder 7 can be formed. The cylinders 7 can form a structure of mutual clamping.

An adjustment assembly 3 is installed inside the vertical cylinder 7. The adjustment assembly 3 includes a pin shaft 301, a sleeve plate 302, a support seat 303, a cross bar 304, a first bearing 305, a sleeve block 306, a friction plate 307, a screw 308, and a second rotating shaft. 309. The turning handle 310, the second bearing 311 and the support rod 312, a plurality of cross rods 304 are respectively fixed inside the outer side of the lower end of the vertical cylinder 7, the outer walls of the cross rods 304 are clearance-fitted with sleeve blocks 306, and the sleeve blocks 306 can be The outer wall of the cross bar 304 moves, the upper end of the sleeve block 306 is fixed with the support seat 303, the upper part of the support seat 303 is provided with a support rod 312, and the two sides of the support rod 312 are connected with the sleeve plate 302 and the sleeve plate 302 and The support base 303 is connected in rotation, the sleeve plate 302 can drive the support base 303 and the sleeve block 306 to move through the support rod 312, the internal thread of the sleeve plate 302 is connected with a screw 308, and the rotation of the screw 308 can control the lifting and lowering of the sleeve plate 302, and the screw 308 The upper and lower sides of the outer wall are connected to the vertical cylinder 7 in rotation through the first bearing 305, the lower part of the outer wall of the second shaft 309 is rotatably connected with the top plate 202 through the second bearing 311, and the inner side of the second shaft 309 and the screw 308 are fixed with friction The plate 307, the second rotating shaft 309 and the screw 308 can be driven by the friction plate 307 when the friction plate 307 is attached, and the friction plate 307 is made of a rubber material with certain elasticity. , the turning handle 310 can drive the second rotating shaft 309 to rotate, the second rotating shaft 309 and the screw 308 have a high level of coaxiality accuracy, and the edge positions in the vertical direction between the friction plates 307 are consistent, ensuring that the friction plates 307 The fitting ability between the plurality of sleeve blocks 306 and the cross bar 304 is symmetrically distributed in the center based on the vertical axis direction of the screw 308, which limits the relative positions of the plurality of sleeve blocks 306, the cross bar 304 and the screw rod 308. The handle 1 The right side of the outer wall is machined with anti-slip lines 5 to prevent the handle 1 from sliding when held. The lower end of the sleeve block 306 is fixed with the blade 6 so that the sleeve block 306 can drive the blade 6 to move or rotate.

When the capsulotomy device for cataract surgery is required, the user can first activate the servo motor 405, so that the output shaft of the servo motor 405 drives the first rotating shaft 406 to rotate, and the first rotating shaft 406 can pass the first gear 401 and the first rotating shaft 406 to rotate. The second gear 404 drives the blade 6 to rotate, and the rotating blade 6 can cut off the patient's anterior membrane sac, which avoids the problem of higher requirements for doctors and clinical treatment of manual cutting of the anterior membrane sac by a doctor in the prior art. Due to the deceleration transmission of the first gear 401 and the second gear 404, it is possible to avoid the problem of excessive speed or instability that may easily cause damage to the patient's eyes. Before performing the excision treatment, the doctor can record the size of the patient's eyeball and calculate the need for excision. the size of the anterior membrane sac, and then press the top plate 202 downward, so that the top plate 202 can drive the vertical rod 201 to move down and squeeze the first spring 204, and at the same time, the upper inner wall of the vertical cylinder 7 can drive the block 203 and the slider 205 to move outwards , and during the continuous downward movement of the block 203, it can be pulled back inward by the elastic force of the second spring 207 at a specific position, so as to realize the engagement between the block 203 and the vertical cylinder 7, and at the same time between the friction plates 307 It can move along with it to form a tight fit state. At this time, the user can turn the handle 310, so that the handle 310 drives the screw 308 to rotate, so that the sleeve plate 302 can move on the outer wall of the screw rod 308, and then the sleeve plate 302 can pass through the support rod. 312 drives the plurality of sleeve blocks 306 and the blades 6 to move synchronously, so that the diameter of the full circle formed by the plurality of blades 6 can be adjusted to adapt to the size of the anterior membrane sac that needs to be removed by different patients, avoiding the inconvenience of the prior art to adapt to different patients. The size of the anterior membrane capsule that needs to be removed or the problem of high stability of the blade 6 after adjustment is not possible. After adjusting the position of the blade 6, the handle 206 can be pushed outwards, so that the handle 206 can drive the block 203 to the side. Move outward to release the engaging structure between the blocking block 203 and the vertical cylinder 7, and then the elastic force of the first spring 204 can realize the reset between the two friction plates 307, so as to avoid accidentally touching the driving part during use and causing the blade 6 the position has changed.

In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top" ", "inside", "front", "center", "both ends", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "arrangement", "connection", "fixation" and "swivel connection" should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection or an integrated body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction between the two elements. Unless otherwise clearly defined, those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. The utility model provides an intercept a sac device for cataract surgery, includes handle (1) and vertical section of thick bamboo (7), the inside vertical section of thick bamboo (7) that are equipped with in left side of handle (1), its characterized in that: the inner part of the left side of the handle (1) is rotationally connected with the vertical cylinder (7) through the power assembly (4);

the power assembly (4) comprises a first gear (401), a third bearing (402), a fourth bearing (403), a second gear (404), a servo motor (405) and a first rotating shaft (406);

the servo motor (405) is fixedly connected to the left side of the inner wall of the handle (1), an output shaft of the servo motor (405) is fixedly connected with a first rotating shaft (406), the upper portion of the outer wall of the first rotating shaft (406) is rotatably connected with the handle (1) through a third bearing (402), a first gear (401) is fixedly connected to the outer wall of the first rotating shaft (406), the left side of the first gear (401) is meshed and connected with a second gear (404), the inner wall of the second gear (404) is fixedly connected with the vertical cylinder (7), and the inner wall and the outer wall of the fourth bearing (403) are fixedly connected with the vertical cylinder (7) and the handle (1) respectively; the transmission ratio between the first gear (401) and the second gear (404) is 3: 1; a limiting component (2) is arranged above the vertical cylinder (7);

the limiting assembly (2) comprises a vertical rod (201), a top plate (202), a clamping block (203), a first spring (204), a sliding block (205), a handle (206) and a second spring (207);

a plurality of vertical rods (201) are fixedly connected to the outer side of the lower end of the top plate (202), the vertical rods (201) are in clearance fit with the vertical barrel (7), a first spring (204) is arranged below the vertical rods (201), the upper side and the lower side of the first spring (204) are fixedly connected with the vertical rods (201) and the vertical barrel (7) respectively, sliding blocks (205) are in clearance fit with the left side and the right side of the inner portion of the top plate (202), handles (206) and clamping blocks (203) are fixedly connected to the upper end and the lower end of the sliding blocks (205) respectively, the clamping blocks (203) are attached to the upper end of the vertical barrel (7) mutually, second springs (207) are arranged on the inner side of the sliding blocks (205), and the inner side and the outer side of each second spring (207) are fixedly connected with the top plate (202;

an adjusting component (3) is arranged in the vertical cylinder (7);

the adjusting assembly (3) comprises a pin shaft (301), a sleeve plate (302), a supporting seat (303), a cross rod (304), a first bearing (305), a sleeve block (306), a friction plate (307), a screw rod (308), a second rotating shaft (309), a rotating handle (310), a second bearing (311) and a supporting rod (312);

a plurality of cross rods (304) are respectively and fixedly connected with the inner part of the outer side of the lower end of the vertical cylinder (7), the outer walls of the cross rods (304) are in clearance fit with sleeve blocks (306), the upper ends of the sleeve blocks (306) are fixedly connected with supporting seats (303), the supporting rods (312) are arranged above the supporting seats (303), the two sides of each supporting rod (312) are respectively connected with the sleeve plate (302) and the supporting seat (303) in a rotating way through pin shafts (301), the inner part of the sleeve plate (302) is connected with a screw rod (308) through threads, the upper side and the lower side of the outer wall of the screw rod (308) are rotationally connected with a vertical cylinder (7) through a first bearing (305), the lower part of the outer wall of the second rotating shaft (309) is rotationally connected with the top plate (202) through a second bearing (311), friction plates (307) are fixedly connected with the inner sides of the second rotating shaft (309) and the screw rod (308), a plurality of rotating handles (310) are fixedly connected to the upper end of the outer wall of the second rotating shaft (309); the plurality of the set blocks (306) and the cross rods (304) are distributed in a centrosymmetric manner by taking the vertical axis direction of the screw (308) as a reference; the anti-skidding line (5) of outer wall right side processing of handle (1), the equal rigid coupling of lower extreme of cover piece (306) has blade (6).

2. The capsulotomy device for cataract surgery according to claim 1, wherein: and an anti-slip sleeve for preventing slipping is arranged on the outer wall of the handle (206).

3. The capsulotomy device for cataract surgery according to claim 1, wherein: the inclined plane gradient of the joint of the fixture block (203) and the vertical cylinder (7) is consistent.

4. The capsulotomy device for cataract surgery according to claim 1, wherein: the clamping block (203) and the vertical cylinder (7) can form a clamping structure.

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