CN115106170A

CN115106170A - Intraocular tissue disruptor

Info

Publication number: CN115106170A
Application number: CN202110294473.7A
Authority: CN
Inventors: 张少冲; 徐华苹; 陈璐; 周星; 方冬; 刘磷海; 佘洁婷; 王玉娥
Original assignee: Guangzhou T K Medical Instrument Co ltd; SHENZHEN OPHTHALMOLOGY HOSPITAL
Current assignee: Guangzhou T K Medical Instrument Co ltd; SHENZHEN OPHTHALMOLOGY HOSPITAL
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2022-09-27

Abstract

The intraocular tissue disruptor of the present invention comprises a holding disrupting section, a connecting mechanism, a receiving sheath, a control mechanism and a handle. The connecting mechanism is arranged in the containing sheath, the far end of the connecting mechanism is provided with a clamping and crushing part, and the near end of the connecting mechanism is provided with a handle. The control mechanism controls the opening or closing of the clamping and crushing part. When the control mechanism controls the clamping and crushing part to be closed, the connecting mechanism drives the clamping and crushing part to move towards the inside of the accommodating sheath, the working part of the clamping and crushing part is closed, and intraocular tissues are crushed under the combined action of the cutting edge of the accommodating sheath and the working part. When the intraocular tissue disruptor comprises the negative pressure suction mechanism, the negative pressure suction mechanism can timely suck and discharge the disrupted tissue out of the eye, and prevent the disrupted tissue from causing accidental injury to the surrounding tissues in the eye. The intraocular tissue disruptor of the invention is very convenient and safe for clinical use.

Description

Intraocular tissue disruptor

Technical Field

The invention relates to an intraocular tissue disruptor for disrupting intraocular retinal tissue, in particular to an intraocular tissue disruptor with disruption and suction capabilities.

Background

The zonules of the lens break or relax excessively, allowing the lens to move completely out of its physiological position, known as total dislocation of the lens. Gross dislocation of the lens can cause severe refractive error, uveitis, secondary glaucoma, and other complications. If the lens is completely dislocated into the vitreous cavity, it may also cause traction at the vitreous base, leading to serious complications such as retinal detachment. Therefore, patients with total dislocation of the crystalline lens need to be evaluated for visual function, opacity of the crystalline lens, age of the patient and related complications, and need to be treated surgically if necessary.

For lenses with moderate to severe total dislocation into the vitreous cavity, if the lens is estimated to have a hard nucleus, the current conventional surgical procedure is removal by ultrasonic pars plana ciliary body fragmentation. However, when the hardness of the lens hard core is high, fragments generated by ultrasonic pulverization may damage the retina under the impact of liquid flow, retinal tears and hemorrhages may occur in severe cases, and even retinal detachment may cause great damage to vision, and moreover, the lens hard fragments are difficult to be accurately removed by the ultrasonic pulverization method, so that further improvement of the existing tissue disruption apparatus is required.

Disclosure of Invention

The intraocular tissue disruptor provided by the invention has the advantages that through the matching design of the clamping disruptor and the containing sheath, not only can good clamping and disrupting force be generated, but also the containing sheath can be communicated with the negative pressure suction device, the disrupted tissue can be removed in time, accurate disruption and timely removal can be realized, and accidental injury to retina or peripheral tissues caused by fragments generated after the tissue disruption can be effectively prevented.

The intraocular tissue disruptor of the present invention is characterized in that: the intraocular tissue disruptor 100 comprises a holding and disrupting part 1, a connecting mechanism 2, a containing sheath 3, a control mechanism 4 and a handle 5;

A. the connecting mechanism 2 is arranged in the accommodating sheath 3, and the clamping and crushing part 1 is arranged at the far end of the connecting mechanism 2; the handle 5 is arranged at the near end of the connecting mechanism 2;

B. the control mechanism 4 controls the opening or closing of the clamping and crushing part 1;

C. the clamping and crushing part 1 at least comprises 2 working parts 11.

Work as control mechanism 4 control when the broken portion of centre gripping 1 is closed, coupling mechanism 2 drives the broken portion of centre gripping 1 to accomodate the sheath 3 internal motion, the work portion 11 of the broken portion of centre gripping 1 is closed, carries out the breakage to the tissue, especially works as when the tip of accomodating sheath 3 is equipped with blade 32 with under the combined action of work portion 11, can conveniently break the intraocular tissue.

The clamping and crushing part 1 comprises 3 working parts 11. The clamping part 1 can be provided with a plurality of working parts 11, such as 3 or more, so that the stability of clamping tissues can be better ensured, and a better crushing effect can be obtained.

The working part 11 comprises a clamping surface 11-1 and a crushing end 11-2. The clamping surface 11-1 can well fix tissues to be crushed, the crushing end 11-2 can apply crushing force to the clamped tissues, and the crushing end 11-2 can be designed into a linear cutting edge, a sawtooth-shaped cutting edge or an arc-shaped cutting edge.

The clamping surface 11 is arc-shaped. The arcuate embracing shape may exert a better gripping force on tissue, especially semi-hard or elastic tissue.

The intraocular tissue disruptor 100 includes a negative pressure suction mechanism 6. The negative pressure suction mechanism 6 can timely suck and discharge the broken tissues out of the eye, and prevent the broken tissues from causing accidental injury to peripheral tissues in the eye.

The negative pressure suction mechanism 6 includes a suction inlet 61, a suction passage 62, and a discharge port 63; the suction inlet 61 is provided at the distal end of the storage sheath 3, and the discharge outlet 63 is provided in the handle 5. The exhaust port 63 is connected to a negative pressure source 200.

The control mechanism 4 is a connecting rod type control mechanism, or a hinge type control mechanism, or a rotary type control mechanism. The applicant has only listed the three forms of control means described above, and those skilled in the art can design the control means 4 in different forms of action as required, without departing from the scope of protection of the present application.

The control mechanism 4 is a connecting rod type control mechanism 4-1; the connecting rod type control mechanism 4-1 comprises a control switch 41, the control switch 41 is pressed, the connecting mechanism 2 moves backwards, the clamping and crushing part 1 is closed, the control switch 41 is loosened, the connecting mechanism 2 resets, and the clamping and crushing part 1 is opened.

The connecting rod type control mechanism 4-1 comprises a control switch 41, a control core rod 42, a connecting seat 43 and a return spring 44; the control core rod 42 is connected with the connecting seat 43, and the return spring 44 is arranged on the outer side of the connecting seat 43; the control core rod 42, the connecting seat 43 and the return spring 44 are arranged in a shell 51 of the handle 5, a receiving sheath 3 is arranged at the far end of the shell 51, the connecting mechanism 2 is arranged in the receiving sheath 3, and the near end of the connecting mechanism 2 is connected to the connecting seat 43; the control switch 41 is pressed, the control core rod 42 moves backwards to drive the connecting seat 43 to move backwards, the return spring 44 is compressed, so that the connecting mechanism 2 moves backwards, the clamping and crushing part 1 connected to the far end of the connecting mechanism 2 retracts and enters the accommodating sheath 3, the clamping and crushing part 1 is closed, and the working part 11 and the cutting edge at the far end of the accommodating sheath 3 are matched to crush tissues; when the control switch 41 is loosened, the connecting seat 43 moves forward under the action of the restoring force of the return spring 44, the connecting mechanism 2 connected to the connecting seat 43 drives the clamping and crushing part 1 to move forward, the clamping and crushing part 1 extends out from the far end of the accommodating sheath 3, and the clamping and crushing part 1 is opened.

The through hole 31 of the housing sheath 3 constitutes the suction passage 62.

The connecting means 2 is a hollow tubular structure.

The central bore 21 of the hollow tubular structure of the coupling mechanism 2 constitutes the suction channel 62. The hollow tubular structure design maximizes the suction channel 62, and better ensures that the fragmented tissue can be effectively sucked out of the eye.

The negative pressure suction mechanism 6 includes a suction switch 64. The suction switch 64 can control the on and off of the negative pressure suction.

The suction switch 64 is provided on the handle 5 or is a foot switch. The suction switch 64 may be disposed at various locations of the intraocular tissue disruptor of the present invention as desired, and applicant does not intend to exemplify it herein, but does not depart from the scope of the present application.

In clinical use, the clamping and crushing part 1 is closed firstly, the intraocular tissue crusher is placed into an eye, the control mechanism 4 is released, the clamping and crushing part 1 is opened to clamp tissues to be crushed, the clamping and crushing part 1 is closed, the connecting mechanism 2 moves backwards to drive the clamping and crushing part 1 to be accommodated in the accommodating sheath 3, and the tissues are crushed under the combined action of the crushing end 11 and the cutting edge 32 of the accommodating sheath 3. When the intraocular tissue disruptor of the present invention is connected to the negative pressure source 200, the suction switch 64 is turned on, and the disrupted tissue is sucked into the suction channel 62 through the suction inlet 61 and discharged to the outside of the eye through the discharge port 63.

The intraocular tissue disruptor of the present invention comprises a holding and disrupting part 1, a connecting mechanism 2, a housing sheath 3, a control mechanism 4 and a handle 5. The connecting mechanism 2 is arranged in the accommodating sheath 3, the clamping and crushing part 1 is arranged at the far end of the connecting mechanism 2, and the handle 5 is arranged at the near end of the connecting mechanism 2. The control mechanism 4 controls the opening or closing of the clamping and crushing part 1. When control mechanism 4 control centre gripping crushing portion 1 is closed, coupling mechanism 2 drives centre gripping crushing portion 1 to accomodate the sheath 3 internal motion, the working portion 11 of centre gripping crushing portion 1 is closed accomodate the blade 32 of sheath 3 with under the combined action of working portion 11, to the intraocular tissue carry out the breakage. The intraocular tissue disruptor 100 includes a negative pressure suction mechanism 6. The negative pressure suction mechanism 6 can timely suck and discharge the broken tissues out of the eye, and prevent the broken tissues from causing accidental injury to peripheral tissues in the eye. The intraocular tissue disruptor of the invention is very convenient and safe for clinical use.

Drawings

FIG. 1 is a schematic perspective view of the intraocular tissue disruptor according to the present invention, showing the opened holding and disrupting portion.

Fig. 1-1 is a front view of fig. 1.

Fig. 1-2 are enlarged views a of fig. 1.

Fig. 1-3 are cross-sectional views B-B of fig. 1-1.

Fig. 1-4 are enlarged views at C of fig. 1-3.

Fig. 1-5 are exploded views of fig. 1.

Fig. 2 is a schematic perspective view of the clamped crushing section of fig. 1 when closed.

Fig. 2-1 is a front view of fig. 2.

Fig. 2-2 is an enlarged view at D of fig. 2.

Fig. 2-3 is a cross-sectional view E-E of fig. 2-1.

FIG. 3 is a schematic view of the intraocular tissue disruptor of the present invention having 3 working portions.

Fig. 3-1 is an enlarged view at F of fig. 3.

FIG. 4 is a schematic diagram of the operation of the intraocular tissue disruptor of the present invention including a negative pressure suction mechanism.

In the above figures:

100 is an intraocular tissue disruptor of the invention and 200 is a source of negative pressure.

1 is a clamping and crushing part, 2 is a connecting mechanism, 3 is a containing sheath, 4 is a control mechanism, 5 is a handle, and 6 is a negative pressure suction mechanism 6.

11 is a working part, 11-1 is a clamping surface, and 11-2 is a crushing end; 21 is a central hole; 31 is a through hole, and 32 is a cutting edge; 41 is a control switch, 42 is a control core rod, 43 is a connecting seat, and 44 is a return spring; reference numeral 61 denotes a suction inlet, 62 denotes a suction passage, 63 denotes a discharge port, and 64 denotes a suction switch.

Detailed Description

Example 1: the invention relates to an intraocular tissue disruptor

Referring to FIGS. 1 to 2 to 3, the intraocular tissue disruptor of the present embodiment comprises a grip disrupting part 1, a connecting mechanism 2, a storage sheath 3, a control mechanism 4 and a handle 5.

The connecting mechanism 2 is arranged in the accommodating sheath 3, and the clamping and crushing part 1 is arranged at the far end of the connecting mechanism 2; the handle 5 is arranged at the proximal end of the connecting mechanism 2.

The control mechanism 4 controls the opening or closing of the clamping and crushing part 1.

The clamping and crushing part 1 at least comprises 2 working parts 11. The clamping portion 1 may also have a plurality of working portions 11, such as 3 or more, which can better ensure the stability of tissue clamping and achieve better crushing effect, and refer to fig. 1 and 3.

Referring to fig. 1-2, the working part 11 comprises a gripping surface 11-1 and a crushing end 11-2. The clamping surface 11-1 can well fix tissues to be crushed, the crushing end 11-2 can apply crushing force to the clamped tissues, and the crushing end 11-2 can be designed into a linear cutting edge, a sawtooth-shaped cutting edge or an arc-shaped cutting edge.

Referring to fig. 1-2, in the present embodiment, the clamping surface 11 is in an arc shape. The arcuate embracing shape may exert a better gripping force on tissue, particularly semi-hard or elastic tissue.

Referring to fig. 1-3 and 2-3, in the present embodiment, the control mechanism 4 is a link-type control mechanism 4-1; the connecting rod type control mechanism 4-1 comprises a control switch 41, the control switch 41 is pressed, the connecting mechanism 2 moves backwards, the clamping and crushing part 1 is closed, the control switch 41 is released, the connecting mechanism 2 resets, and the clamping and crushing part 1 is opened.

The connecting rod type control mechanism 4-1 comprises a control switch 41, a control core rod 42, a connecting seat 43 and a return spring 44; the control core rod 42 is connected with the connecting seat 43, and the return spring 44 is arranged on the outer side of the connecting seat 43; the control core rod 42, the connecting seat 43 and the return spring 44 are arranged in a shell 51 of the handle 5, a receiving sheath 3 is arranged at the far end of the shell 51, the connecting mechanism 2 is arranged in the receiving sheath 3, and the near end of the connecting mechanism 2 is connected to the connecting seat 43; the control switch 41 is pressed, the control core rod 42 moves backwards to drive the connecting seat 43 to move backwards, the return spring 44 is compressed, so that the connecting mechanism 2 moves backwards, the clamping and crushing part 1 connected to the far end of the connecting mechanism 2 retracts and enters the accommodating sheath 3, the clamping and crushing part 1 is closed, and the working part 11 and the cutting edge at the far end of the accommodating sheath 3 are matched to crush tissues; when the control switch 41 is released, the connecting seat 43 moves forward under the action of the restoring force of the return spring 44, the connecting mechanism 2 connected to the connecting seat 43 drives the clamping and crushing part 1 to move forward, the clamping and crushing part 1 extends out from the far end of the accommodating sheath 3, and the clamping and crushing part 1 is opened.

In clinical use, the clamping and crushing part 1 is closed firstly, the intraocular tissue crusher is placed into an eye, the control mechanism 4 is released, the clamping and crushing part 1 is opened to clamp tissues to be crushed, the clamping and crushing part 1 is closed, the connecting mechanism 2 moves backwards to drive the clamping and crushing part 1 to be accommodated in the accommodating sheath 3, and the tissues are crushed under the combined action of the crushing end 11 and the cutting edge 32 of the accommodating sheath 3.

When control mechanism 4 control centre gripping crushing portion 1 is closed, coupling mechanism 2 drives centre gripping crushing portion 1 to accomodate the sheath 3 internal motion, the working portion 11 of centre gripping crushing portion 1 is closed accomodate the blade 32 of sheath 3 with under the combined action of working portion 11, to the intraocular tissue carry out the breakage. The intraocular tissue disruptor of this embodiment is very convenient for clinical use.

Example 2: intraocular tissue disruptor of the present invention including negative pressure suction means

Referring to FIGS. 1 to 3, FIGS. 2 to 3 and FIG. 4, this embodiment is different from embodiment 1 in that in this embodiment, the intraocular tissue disruptor 100 further comprises a negative pressure suction mechanism 6.

In this embodiment, the connecting mechanism 2 is disposed in the through hole 31 of the accommodating sheath 3, and the connecting mechanism 2 is a hollow tubular structure.

The central bore 21 of the hollow tubular structure of the coupling mechanism 2 constitutes the suction channel 62. The hollow tubular structure design can maximize the suction channel, and better ensure that the broken tissue can be effectively sucked and discharged out of the eye.

The suction switch 64 is provided on the handle 5 or is a foot switch. The suction switch 64 may be disposed at various positions of the intraocular tissue disruptor of the present invention, or may be disposed on the negative pressure source 200, as desired, and the applicant does not exemplify the invention herein, but the scope of the invention is not limited thereto.

In clinical use, the clamping and crushing part 1 is closed firstly, the intraocular tissue crusher is placed into an eye, the control mechanism 4 is released, the clamping and crushing part 1 is opened to clamp tissues to be crushed, the clamping and crushing part 1 is closed, the connecting mechanism 2 moves backwards to drive the clamping and crushing part 1 to be accommodated in the accommodating sheath 3, and the tissues are crushed under the combined action of the crushing end 11 and the cutting edge 32 of the accommodating sheath 3. When it is necessary to discharge the crushed tissue out of the eye, the suction switch 64 is turned on, and the crushed tissue is sucked into the suction passage 62 through the suction inlet 61 and discharged out of the eye through the discharge port 63.

Compared with embodiment 1, the negative pressure suction mechanism 6 can timely suck and discharge the crushed tissues out of the eye, prevent the crushed tissues from causing accidental injury to tissues around the eye, and is safer in clinical use.

It should be noted that structures disclosed and illustrated herein may be replaced by other structures having the same effect, and the described embodiments of the invention are not the only structures for carrying out the invention. Although preferred embodiments of the present invention have been shown and described herein, it will be apparent to those skilled in the art that these embodiments are by way of example only and that numerous changes, modifications and substitutions may be made without departing from the invention by those skilled in the art, and it is intended that the scope of the invention be defined by the spirit and scope of the appended claims.

Claims

1. An intraocular tissue disruptor, characterised by: the intraocular tissue disruptor (100) comprises a clamping and disrupting part (1), a connecting mechanism (2), a containing sheath (3), a control mechanism (4) and a handle (5);

A. the connecting mechanism (2) is arranged in the accommodating sheath (3), and the clamping and crushing part (1) is arranged at the far end of the connecting mechanism (2); the handle (5) is arranged at the near end of the connecting mechanism (2);

B. the control mechanism (4) controls the opening or closing of the clamping and crushing part (1);

C. the clamping and crushing part (1) at least comprises 2 working parts (11).

2. The intraocular tissue disruptor of claim 1, wherein: the clamping and crushing part (1) comprises 3 working parts (11).

3. The intraocular tissue disruptor of claim 2, wherein: the working part (11) comprises a clamping surface (11-1) and a crushing end (11-2).

4. The intraocular tissue disruptor as defined in claim 3, wherein: the clamping surface (11) is arc-shaped.

5. The intraocular tissue disruptor device of claim 1, wherein: the intraocular tissue disruptor (100) includes a negative pressure suction mechanism (6).

6. The intraocular tissue disruptor of claim 5, wherein: the negative pressure suction mechanism (6) comprises a suction inlet (61), a suction channel (62) and a discharge port (63); the suction inlet (61) is provided at the distal end of the storage sheath (3), and the discharge outlet (63) is provided on the handle (5).

7. The intraocular tissue disruptor of claim 1, wherein: the control mechanism (4) is a connecting rod type control mechanism, or a hinge type control mechanism, or a rotary type control mechanism.

8. The intraocular tissue disruptor of claim 7, wherein: the control mechanism (4) is a connecting rod type control mechanism (4-1); the connecting rod type control mechanism (4-1) comprises a control switch (41), the control switch (41) is pressed, the connecting mechanism (2) moves backwards, the clamping and crushing part (1) is closed, the control switch (41) is loosened, the connecting mechanism (2) resets, and the clamping and crushing part (1) is opened.

9. The intraocular tissue disruptor of claim 8, wherein: the connecting rod type control mechanism (4-1) comprises a control switch (41), a control core rod (42), a connecting seat (43) and a return spring (44); the control core rod (42) is connected with the connecting seat (43), and the return spring (44) is arranged on the outer side of the connecting seat (43); the control core rod (42), the connecting seat (43) and the return spring (44) are arranged in a shell (51) of the handle (5), a receiving sheath (3) is arranged at the far end of the shell (51), the connecting mechanism (2) is arranged in the receiving sheath (3), and the near end of the connecting mechanism (2) is connected to the connecting seat (43); the control switch (41) is pressed, the control core rod (42) moves backwards to drive the connecting seat (43) to move backwards, the return spring (44) is compressed, so that the connecting mechanism (2) moves backwards, the clamping and crushing part (1) connected to the far end of the connecting mechanism (2) retracts along with the control core rod, the control core rod enters the accommodating sheath (3), and the clamping and crushing part is closed; the control switch (41) is loosened, the connecting seat (43) moves forwards under the action of the restoring force of the return spring (44), the connecting mechanism (2) connected to the connecting seat (43) drives the clamping and crushing part (1) to move forwards, the clamping and crushing part (1) extends out of the far end of the accommodating sheath (3), and the clamping and crushing part (1) is opened.

10. The intraocular tissue disruptor as defined in claim 6, wherein: the through hole (31) of the receiving sheath (3) constitutes the suction channel (62).

11. The intraocular tissue disruptor as defined in claim 9, wherein: the connecting mechanism (2) is of a hollow tubular structure.

12. The intraocular tissue disruptor device of claim 11, wherein: the central bore (21) of the hollow tubular structure of the connecting means (2) constitutes the suction channel (62).

13. The intraocular tissue disruptor of claim 5, wherein: the negative pressure suction mechanism (6) comprises a suction switch (64).

14. The intraocular tissue disruptor of claim 13, wherein: the attraction switch (64) is arranged on the handle (5) or is a foot switch.