CN212592682U

CN212592682U - Annular cataract capsulotomy device

Info

Publication number: CN212592682U
Application number: CN202020591668.9U
Authority: CN
Inventors: 史小文; 周云霞; 裴秀娟; 汪峰; 张明瑞; 张艳; 王明坤; 晏飞燕
Original assignee: TIANJIN CENTURY KANGTAI BIO-MEDICAL ENGINEERING CO LTD
Current assignee: TIANJIN CENTURY KANGTAI BIO-MEDICAL ENGINEERING CO LTD
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-02-26
Anticipated expiration: 2030-04-20

Abstract

The utility model relates to the technical field of medical instruments, in particular to a cataract annular capsule cutting device, which comprises a knife body, a channel tube, a propeller main body and a core bar; the core bar is formed by connecting a press handle, an outer push rod, an inner push rod and a push needle into a whole in sequence, and a hook used for connecting the knife body is arranged at the front end of the push needle; the cutter body is spiral, and the front end of the cutter body is provided with a cutting edge for cutting; the channel pipe comprises a pipe body and a pipe seat for fixedly connecting with the propeller main body, the front end of the pipe body is arc-shaped and has the same spiral direction with the knife body, and the pipe body is provided with a pipe body channel for accommodating the knife body, the push needle and the hook; the propeller main body consists of a shell, a front connector which is arranged at the front end of the shell and is adjacent to the tube seat, and folding handrails which are arranged at two sides of the rear end of the shell. The utility model discloses a passageway pipe stretches into patient's intraocular, has avoided using the injury that tweezers caused to the eye, has improved the security of operation.

Description

Annular cataract capsulotomy device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an annular cataract cyst cutting device.

Background

In cataract surgery, continuous annular capsulorhexis technology is an important technology for anterior capsulotomy, and the current universal annular capsulorhexis method uses capsulorhexis forceps, firstly, an initial point is made at the center of the anterior capsulorhexis, then, the anterior capsulorhexis forceps are used for drawing a little radian in the directions of two points, the length is about 2-3mm, then, the anterior capsulorhexis forceps are used for annularly capsulorhexis in the anticlockwise direction, and finally, the capsulorhexis forceps are combined at the positions where the capsulorhexis begins in the directions of. However, the existing capsulorhexis techniques suffer from the following drawbacks:

1. the capsulorhexis technology needs to extend capsulorhexis forceps into eyes through corneal limbus incisions, doctors complete the capsulorhexis process by operating the forceps, and the corneal limbus incisions are torn in the process due to the fact that the forceps move back and forth and left and right;

2. the capsule tearing needs to be uniform and smooth in edge as much as possible so as to reduce the risk of tearing the capsule membrane, and the edge of a capsule tearing opening needs to be smooth and neat, so that a doctor needs to have extremely skilled technology which is extremely unfriendly to young doctors and needs a large amount of practice;

3. different cataract patients often need to tear the capsule openings with different sizes due to different lens characteristics, and for doctors, the operation of a capsule opening with different sizes is also a new challenge;

4. during the capsulorhexis process, the anterior capsulotomy should be positioned as far as possible in the middle of the anterior capsule, which is also a test for doctors and operations.

In view of the above, we propose a cataract annular capsulotomy device to solve the above drawbacks well.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a cataract annular cutting device which is used for avoiding tearing the incision of the corneal limbus in the operation process and improving the convenience of operation.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: an annular cataract capsulotomy device comprises a knife body, a channel tube, a propeller main body and a core rod;

the core bar is formed by sequentially connecting a press handle, an outer push rod, an inner push rod and a push needle into a whole, the inner push rod is arranged in the propeller main body in a penetrating mode, the push needle is arranged in the channel tube in a penetrating mode, and a hook used for being connected with the knife body is arranged at the front end of the push needle;

the cutter body is spiral, a cutting edge for cutting is arranged at the front end of the cutter body, a first positioning hole is formed in the rear end of the cutter body, and the hook extends into the first positioning hole and is clamped with the cutter body;

the channel pipe comprises a pipe body and a pipe seat fixedly connected with the propeller main body, the front end of the pipe body is arc-shaped and has the same spiral direction with the cutter body, and the pipe body is provided with a pipe body channel for accommodating the cutter body, the push needle and the hook;

the propeller main body consists of a shell, a front connector arranged at the front end of the shell and adjacent to the tube seat, and folding handrails arranged at two sides of the rear end of the shell.

Preferably, the front connector comprises a front housing and a rear connecting pipe, the rear end pipe of the rear connecting pipe penetrates through the front housing and then is fixedly connected with the shell, the rear connecting pipe is rotatably matched with the front housing, an internal thread is formed in the front housing, an external thread matched with the internal thread is formed in the outer wall of the pipe seat, a positioning protrusion formed integrally with the rear connecting pipe is arranged at the front end of the rear connecting pipe, a second positioning hole matched with the positioning protrusion is formed in the rear end of the pipe seat, and a third channel for accommodating the push pin is formed in the rear connecting pipe.

Preferably, the housing is provided with a first channel capable of accommodating the outer push rod, the housing is further provided with a second channel capable of accommodating the inner push rod, the housing is provided with an accommodating groove for accommodating the folding handrail, and a through hole is formed between the accommodating groove and the first channel in a penetrating manner.

Preferably, the folding handrail consists of a long arm and a shaft, the shaft is fixedly connected with the shell and is in rotary fit with the long arm, the shell is provided with a positioning block, when the folding handrail is completely unfolded to be in a straight shape, the long arm is abutted to the positioning block, and the linear distance between the two long arms is smaller than the diameter of the outer push rod.

Preferably, the front end of the push rod is provided with an embedded groove matched with the push needle, and the end part of the push needle is inserted into the embedded groove and is fixedly connected with the push rod.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model adopts the channel tube to extend into the eyes of the patient, thereby avoiding the damage to the eyes caused by using tweezers and improving the safety of the operation;

2. the utility model can conveniently cut the bag mouth with smooth and tidy edge without a large amount of training and practice by the annular blade technology, thereby saving the manpower and material resources of medical resources;

3. the blade of the utility model is designed to be replaceable, and the bag opening with the required diameter can be conveniently and quickly cut out by using the blades with different diameters, thereby improving the convenience of the operation;

4. the utility model discloses in utilize annular cutting bag sword to cut out patient's disease front capsular, can be convenient find out front capsule center and accurate surely go out the bag mouth of position placed in the middle, further improved the convenience of operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the middle blade of the present invention;

FIG. 3 is a schematic view of the structure of the middle channel pipe of the present invention;

fig. 4 is a schematic view of the unfolding structure of the middle folding handrail of the present invention

Fig. 5 is a schematic view of the unfolded structure of the middle foldable handrail of the present invention;

FIG. 6 is a schematic view of the structure of the front-middle joint of the present invention;

fig. 7 is a schematic diagram of the structure of the middle core rod of the present invention.

In the figure: 1 knife body, 2 channel tubes, 3 pusher bodies, 4 core rods, 101 cutting edges, 102 first positioning holes, 200 tube bodies, 201 tube body channels, 202 tube seats, 203 external threads, 204 second positioning holes, 300 shells, 301 enclosers, 302 internal threads, 303 rear connecting tubes, 304 positioning protrusions, 305 third channels, 306 first channels, 307 second channels, 308 long arms, 309 shafts, 310 positioning blocks, 311 accommodating grooves, 312 through holes, 401 pressing hands, 402 outer push rods, 403 push rods, 404 push pins and 405 hooks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1, a cataract annular capsulotomy device comprises a knife body 1, a channel tube 2, a propeller body 3 and a core rod 4.

As shown in fig. 7, the core rod 4 is formed by sequentially connecting a handle 401, an outer push rod 402, an inner push rod 403 and a push pin 404 into a whole, the inner push rod 403 is arranged in the propeller body 3 in a penetrating manner, the push pin 404 is arranged in the channel tube 2 in a penetrating manner, the handle 401 is fixedly connected with the outer push rod 402, the outer push rod 402 is fixedly connected with the inner push rod 403, an embedded groove matched with the push pin 404 is formed in the front end of the push rod 403, and the end portion of the push pin 404 is inserted into the embedded groove and is fixedly connected with the push rod 403. The front end of the push pin 404 is provided with a hook 405 for connecting with the knife body 1, and the hook 405 and the push pin 404 are integrally formed.

As shown in fig. 2, the knife body 1 is spiral, the front end of the knife body 1 is provided with a cutting edge 101 for cutting, the rear end of the knife body 1 is provided with a first positioning hole 102, and the hook 405 extends into the first positioning hole 102 and is clamped with the knife body 1.

As shown in fig. 3, the passage pipe 2 includes a pipe body 200 and a pipe seat 202 for fixing to the propeller body 3, and the pipe body 200 and the pipe seat 202 are integrally formed. The front end of the tube body 200 is in the same arc shape with the spiral direction of the knife body 1, and the tube body 200 is provided with a tube body channel 201 for accommodating the knife body 1, the push pin 404 and the hook 405.

As shown in fig. 4 to 6, the pusher body 3 is composed of a housing 300, a front connector provided at the front end of the housing 300 and adjacent to the tube holder 202, and folding handrails provided at both sides of the rear end of the housing 300.

The front connector comprises a front cover shell 301 and a rear connecting pipe 303, the rear end pipe of the rear connecting pipe 303 penetrates through the front cover shell 301 and then is fixedly connected with the shell 300, the rear connecting pipe 303 is in rotary fit with the front cover shell 301, the front cover shell 301 is provided with an internal thread 302, the outer wall of the pipe seat 202 is provided with an external thread 203 matched with the internal thread 302, the front end of the rear connecting pipe 303 is provided with a positioning protrusion 304 integrally formed with the rear connecting pipe 303, the rear end of the pipe seat 202 is provided with a second positioning hole 204 matched with the positioning protrusion 304, and the rear connecting pipe 303 is provided with.

The housing 300 is provided with a first channel 306 capable of accommodating the outer push rod 402, the housing 300 is further provided with a second channel 307 capable of accommodating the inner push rod 403, the housing 300 is provided with an accommodating groove 311 for accommodating the foldable handrail, and a through hole 312 is formed between the accommodating groove 311 and the first channel 306 in a penetrating manner.

The folding handrail consists of a long arm 308 and a shaft 309, the shaft 309 is fixedly connected with the shell 300, the shaft 309 is matched with the long arm 308 in a rotating mode, the shell 300 is fixedly connected with a positioning block 310, when the folding handrail is unfolded completely to be in a straight line shape, the long arm 308 is abutted to the positioning block 310, and the linear distance between the two long arms 308 is smaller than the diameter of the outer push rod 402.

The working principle is as follows: when the annular cataract capsulotomy device is used, the method comprises the following steps:

first, the pusher body 3 including the stem 4 is taken out, the long arm 308 is folded into the receiving groove 311, and the push handle 401 is pushed to push the push pin 404 and the hook 405 in the front of the stem 4 out of the front cover 301. The pusher 404 and the hook 405 are inserted into the tube body channel 201, the second positioning hole 204 is inserted into the positioning protrusion 304, the front cover 301 is rotated and pushed, the front cover 301 and the tube seat 202 are screwed tightly, and the pusher body 3 and the channel tube 2 are fixed completely.

And secondly, pushing a button 401 to a hook 405 at the front part of a push needle 404 to extend out of the tube body channel 201, taking out the knife body 1 with a proper size specification, adjusting the direction of the knife body 1 to ensure that the radian direction of the tail part of the knife body 1 is consistent with the radian direction of the front end of the channel tube 2, hanging a first positioning hole 101 at the tail part of a knife head on the hook 405 at the front end of the push needle 404, pulling the button 401 forwards and backwards, adjusting the tail part of the knife body 1 simultaneously to confirm that the knife body 1 correctly enters the channel tube 2, confirming that the hook 405 is at a position vertical to the knife body 1, and continuously pulling the button 401 until the knife body 1 exactly and completely enters the tube body channel 201.

And thirdly, holding the propeller main body 3 by hand, extending the channel tube 2 to the surface of the lens capsule through the corneal limbus incision, determining the position for starting capsulotomy, unfolding the long arm 308, holding the long arm 308 and the press hand 401 by hand, pushing the press hand 401, extending the cutter body 1 out of the channel tube 2, adjusting the propeller main body 3, ensuring that the cutting edge 102 at the front part of the cutter body 1 can cut the capsule, and continuously pushing the press hand 401 until the circumferential cutting is finished. At this time, because the long arm 308 is in the unfolded state, the long arm 308 blocks the outer push rod 402 from continuing to advance, so as to ensure that the first positioning hole 101 at the tail part of the knife body 1 is still in the channel tube 2, thereby preventing the knife body 1 from being excessively extended and preventing the knife body 1 from falling into the eye.

Fourthly, after the cutting is finished, the button 401 is pulled backwards until the knife body 1 completely enters the tube body channel 201, and then the propeller main body 3 is held by hands to move the channel tube 2 out of the eyes of the patient, so that the annular capsule cutting work is finished.

And fifthly, after the operation is finished, all the operation equipment is cleaned, sterilized and stored.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. An annular cataract capsulotomy device is characterized in that: comprises a knife body (1), a channel tube (2), a propeller main body (3) and a core bar (4);

the core rod (4) is formed by sequentially connecting a pressing hand (401), an outer push rod (402), an inner push rod (403) and a push pin (404) into a whole, the inner push rod (403) is arranged in the propeller main body (3) in a penetrating manner, the push pin (404) is arranged in the channel pipe (2) in a penetrating manner, and a hook (405) used for being connected with the knife body (1) is arranged at the front end of the push pin (404);

the knife body (1) is spiral, a cutting edge (101) for cutting is arranged at the front end of the knife body (1), a first positioning hole (102) is formed in the rear end of the knife body (1), and the hook (405) extends into the first positioning hole (102) and is clamped with the knife body (1);

the channel pipe (2) comprises a pipe body (200) and a pipe seat (202) fixedly connected with the propeller main body (3), the front end of the pipe body (200) is arc-shaped and has the same spiral direction as the cutter body (1), and the pipe body (200) is provided with a pipe body channel (201) for accommodating the cutter body (1), the push pin (404) and the hook (405);

the propeller main body (3) is composed of a shell (300), a front connector arranged at the front end of the shell (300) and adjacent to the tube seat (202), and folding handrails arranged on two sides of the rear end of the shell (300).

2. The annular cataract capsulotomy device according to claim 1, wherein: the front connector comprises a front housing (301) and a rear connecting tube (303), the rear end tube of the rear connecting tube (303) penetrates through the rear fixed connection housing (300) of the front housing (301), the rear connecting tube (303) is rotationally matched with the front housing (301), an internal thread (302) is formed in the front housing (301), an external thread (203) matched with the internal thread (302) is formed in the outer wall of the tube seat (202), a positioning protrusion (304) integrally formed with the rear connecting tube (303) is arranged at the front end of the rear connecting tube (303), a second positioning hole (204) matched with the positioning protrusion (304) is formed in the rear end of the tube seat (202), and a third channel (305) containing a push pin connecting tube (404) is formed in the rear connecting tube (303).

3. The annular cataract capsulotomy device according to claim 1, wherein: the foldable handrail is characterized in that a first channel (306) capable of accommodating an outer push rod (402) is formed in the shell (300), a second channel (307) capable of accommodating an inner push rod (403) is further formed in the shell (300), an accommodating groove (311) capable of accommodating the foldable handrail is formed in the shell (300), and a through hole (312) penetrates between the accommodating groove (311) and the first channel (306).

4. The annular cataract capsulotomy device according to claim 3, wherein: the foldable handrail is composed of a long arm (308) and a shaft (309), the shaft (309) is fixedly connected with the shell (300), the shaft (309) is matched with the long arm (308) in a rotating mode, a positioning block (310) is arranged on the shell (300), when the foldable handrail is unfolded completely to be in a straight line shape, the long arm (308) is abutted to the positioning block (310), and the linear distance between the two long arms (308) is smaller than the diameter of the outer push rod (402).

5. The annular cataract capsulotomy device according to claim 1, wherein: the front end of the push rod (403) is provided with an embedded groove matched with the push needle (404), and the end part of the push needle (404) is inserted into the embedded groove and is fixedly connected with the push rod (403).