Instrument for phacofragmentation of lens of eye

Abstract

An instrument for phacofragmentation of the lens of an eye, the instrument comprising a blade arm (1), a hood-shaped blade (2), a traction arm (3) and a blade box (4), wherein the blade arm (1) comprises a left curved blade arm (11) and a right curved blade arm (12), the proximal end of the left curved blade arm (11) being connected to the proximal end of the right curved blade arm (12) and also connected to the distal end of the traction arm (3), and the distal end of the left curved blade arm (11) being separated from the distal end of the right curved blade arm (12); the upper end of the hood-shaped blade (2) is mounted on the left curved blade arm (11) and the right curved blade arm (12), and the hood-shaped blade (2) comprises several phacofragmentation perforated blades (21) formed by weaving filaments; and the blade arm (1) and the hood-shaped blade (2) can be stored in the blade box (4), and the distal end of the traction arm (3) is movably mounted in the blade box (4). The instrument has a rational and compact structure and can meet the usage requirements of lenses of different sizes without the need for ultrasonic vibration to assist in phacofragmentation.

Description

An instrument for crushing eye lens Technical Field

[0001] The present invention relates to the field of lens crushing, and in particular to an apparatus for crushing eye lenses. Background Art

[0002] When the lens needs to be replaced surgically due to clouding of the eye lens or changes in refractive power, the lens needs to be crushed by surgical instruments first, and then the crushed lens is extracted by negative pressure suction. The current common crushing method is to use ultrasonic energy to crush, and the operation time is long, causing secondary damage to the eye tissue. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention proposes an instrument for crushing eye lenses, which has a clever design, a reasonable and compact structure, meets the crushing requirements of lenses of different sizes, is easy to operate, has a short operation time, and is safe and reliable.

[0004] The technical solution of the present invention:

[0005] A device for crushing eye lenses comprises a knife arm, a pocket knife, a traction arm and a knife box. The knife arm comprises a left arc-shaped knife arm and a right arc-shaped knife arm. The proximal end of the left arc-shaped knife arm is connected to the proximal end of the right arc-shaped knife arm and is simultaneously connected to the distal end of the traction arm. The distal end of the left arc-shaped knife arm is separately arranged from the distal end of the right arc-shaped knife arm. The upper end of the pocket knife is mounted on the left and right arc-shaped knife arms. The pocket knife comprises a plurality of crushing hole knives formed by weaving filaments. The knife arm and the pocket knife can be stored in the knife box. The distal end of the traction arm is movably mounted in the knife box. The knife arm is made of memory alloy.

[0006] When the left arc-shaped knife arm and the right arc-shaped knife arm are outside the knife box, the distal end of the left arc-shaped knife arm and the distal end of the right arc-shaped knife arm form a non-fixed connection port.

[0007] The distal axis of the left arc-shaped blade arm is set as an arc-shaped hollow hole, the distal end of the right arc-shaped blade arm is designed as an arc-shaped cylindrical shaft, and the distal end of the right arc-shaped blade arm can be slidably located in the arc-shaped hollow hole at the distal end of the left arc-shaped blade arm; or the distal axis of the left arc-shaped blade arm and the distal axis of the right arc-shaped blade arm are both designed as arc-shaped hollow holes, and the distal ends of the left arc-shaped blade arm and the right arc-shaped blade arm are slidably connected through an arc-shaped cylindrical shaft; the outer diameter of the arc-shaped cylindrical shaft is smaller than the inner diameter of the arc-shaped hollow hole.

[0008] The pocket knife is designed to be one or more layers.

[0009] The upper end of the pocket knife is also designed with several rope rings formed by weaving filaments, and the several rope rings are put on the left arc-shaped knife arm and the right arc-shaped knife arm. The proximal ends of the left arc-shaped knife arm and the right arc-shaped knife arm are also designed with fine holes, and each fine hole has a corresponding rope ring passing through it.

[0010] The opening of the knife box is also designed with an auxiliary crushing ring, which is installed at the opening of the knife box.

[0011] The auxiliary crushing ring is glued to the opening of the knife box.

[0012] The inner end of the auxiliary crushing ring is also designed with at least two claws, which are symmetrically installed on one side of the auxiliary crushing ring. The claws include a strip-shaped card body and a card tooth. One end of the strip-shaped card body is fixed to the top of the auxiliary crushing ring, and a card tooth is provided on the outside of the other end of the strip-shaped card body; at least two strip grooves are correspondingly provided on the inner wall of the knife box, and a card groove for the card tooth to be inserted is opened at the bottom of the strip groove on the inner wall of the knife box. The strip card body is located in the strip groove, and the card tooth is installed in the card groove.

[0013] The outer end surface of the auxiliary pulverizing ring is configured as a semicircular arc end surface.

[0014] An annular protrusion is provided inside the arc-shaped hollow hole, and a circular baffle is provided at the end of the arc-shaped cylindrical shaft. The circular baffle slides in the arc-shaped hollow hole, and the outer diameter of the circular baffle is larger than the inner diameter of the annular protrusion.

[0015] The advantages of the present invention are ingenious design and reasonable and compact structure. By designing the knife arm with one end in a free state, the knife can be stretched to the maximum extent to meet the use requirements of lenses of different sizes, especially for the crushing of larger lenses. It is particularly convenient for the crushing operation on the outer side of the capsular bag, and the operation is more convenient and quick; and there is no need for various energy vibrations such as ultrasound to assist in crushing, so it will not cause secondary damage to the eyes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic diagram of the present invention.

[0017] FIG2 is a perspective schematic diagram 1 of the present invention.

[0018] FIG3 is a second perspective schematic diagram of the present invention.

[0019] FIG4 is a schematic diagram of a double-layer pocket knife of the present invention.

[0020] FIG5 is a cross-sectional view showing a knife box mouth portion provided with an auxiliary crushing ring according to the present invention.

[0021] FIG6 is a schematic diagram of an auxiliary pulverization ring according to the present invention.

[0022] FIG7 is an enlarged schematic diagram of a partial cross-section in FIG3 .

[0023] FIG8 is a first schematic diagram of a non-fixed connection mode of the knife arm of the present invention.

[0024] FIG9 is a second schematic diagram of the non-fixed connection mode of the knife arm of the present invention. DETAILED DESCRIPTION

[0025] Referring to Figures 1-9, an instrument for crushing the lens of the eye includes a knife arm 1, a pocket knife 2, a traction arm 3 and a knife box 4. The knife arm 1 includes a left arc-shaped knife arm 11 and a right arc-shaped knife arm 12. The proximal end of the left arc-shaped knife arm 11 is connected to the proximal end of the right arc-shaped knife arm 12 and is also connected to the distal end of the traction arm 3. The distal end of the left arc-shaped knife arm 11 is separated from the distal end of the right arc-shaped knife arm 12. The upper end of the pocket knife 2 is installed on the left arc-shaped knife arm 11 and the right arc-shaped knife arm 12. The pocket knife 2 includes a plurality of crushing hole knives 21 formed by weaving filaments; the knife arm 1 and the pocket knife 2 can be stored in the knife box 4, and the distal end of the traction arm 3 is movably installed in the knife box 4; the knife arm 1 is made of memory alloy.

[0026] As shown in Figures 1, 2, and 4, when the left and right curved blade arms 11, 12 are outside the blade box 4, the distal ends of the left and right curved blade arms 11, 12 form a non-fixed connection port 5. This design maximizes the opening of the blade arms, is highly versatile, and meets surgical needs.

[0027] As shown in Figures 3, 7 and 8, the distal axis of the left arc-shaped blade arm 11 is set as an arc-shaped hollow hole 6, and the distal end of the right arc-shaped blade arm 12 is designed as an arc-shaped cylindrical shaft 7. The outer diameter of the arc-shaped cylindrical shaft 7 is smaller than the inner diameter of the arc-shaped hollow hole 6. The arc-shaped cylindrical shaft 7 at the distal end of the right arc-shaped blade arm 12 can be slidably located in the arc-shaped hollow hole 6 at the distal end of the left arc-shaped blade arm 11. This design also ensures that the blade arm can be opened and can be opened to the required degree as needed during surgery to ensure that the lens is held and an effective crushing operation is performed. The design lengths of the hollow hole and the cylindrical shaft are designed to different lengths according to actual needs. In Figures 7-8, a number of holes are designed in the left and right arc-shaped blade arms to fix the rope end at the upper end of the holding knife.

[0028] As shown in Figure 9, the distal axis of the left curved blade arm 11 and the distal axis of the right curved blade arm 12 are both designed as arc-shaped hollow holes. The distal ends of the left curved blade arm 11 and the distal ends of the right curved blade arm 12 are slidably connected via an arc-shaped cylindrical shaft 7. This design also ensures that the blade arms can be opened simultaneously, which is more flexible.

[0029] As shown in Figure 7, an annular protrusion 61 is provided on the inner side of the mouth of the arc-shaped hollow hole 6, and a circular baffle 71 is provided on the end of the arc-shaped cylindrical shaft 7. The circular baffle 71 slides in the arc-shaped hollow hole 6, and the outer diameter of the circular baffle 71 is larger than the inner diameter of the annular protrusion 61. This design ensures that the arc-shaped cylindrical shaft can slide freely in the arc-shaped hollow hole. At the same time, the circular baffle and the annular protrusion design ensure that the arc-shaped cylindrical shaft will not fall out of the arc-shaped hollow hole, which is safe and reliable.

[0030] As shown in Figure 4, the pocket knife 2 is designed to be one or more layers. A two-layer or more-layer design can ensure that the crushed fragments are smaller and easier to pull out. The fixing method of the upper end of the pocket knife of the present invention to the knife arm is not unique. Different knife arms can be designed according to different structures of pocket knives. When the knife arm end is designed with an opening, the left and right arc-shaped knife arms can be respectively made of memory alloy wire drawing and folded back to form a knife arm. Each knife arm is two metal wires that can be used to pass through the rope ring at the upper end of the pocket knife, and can be used to pass through two layers of pocket knives.

[0031] The upper end of the sling 2 is also designed with a plurality of rope loops 22 formed by woven filaments. The rope loops 22 are placed on the upper ends of the left and right curved blade arms 11, 12. The proximal ends of the left and right curved blade arms 11, 12 are also designed with small holes 8, each of which has a corresponding rope loop 22 passing through it. This fixing method mainly ensures that the sling will not slip off the blade arm when it is pulled and retracted, and is safe and reliable.

[0032] As shown in Figures 5-6, the opening of the knife box 4 is also designed with an auxiliary crushing ring 9, which is installed at the opening of the knife box 4. The auxiliary crushing ring can effectively assist the knife in retrieving and crushing the lens, making it easier to retract and crush the lens, and preventing problems such as jamming.

[0033] The auxiliary crushing ring 9 is glued to the mouth of the knife box 4 to effectively fix the auxiliary crushing ring.

[0034] As shown in Figures 5-6, the inner end of the auxiliary crushing ring 9 is further designed with at least two claws 91, which are symmetrically mounted on one side of the auxiliary crushing ring 9. The claws 91 include a strip-shaped clamping body 911 and a clamping tooth 912. One end of the strip-shaped clamping body 911 is fixed to the upper surface of the auxiliary crushing ring 9, and the clamping tooth 912 is provided on the outer side of the other end of the strip-shaped clamping body 911. The inner wall of the blade box 4 is correspondingly provided with at least two strip grooves 41. The bottom of the strip grooves 41 has a clamping groove 42 on the inner wall of the blade box 4 for the clamping tooth 912 to engage. The strip-shaped clamping body 911 is located in the strip groove 41, and the clamping tooth 912 is clamped in the clamping groove 42. The auxiliary crushing ring is fixed by a mechanical structure, which is more secure and reliable.

[0035] As shown in Figure 6, the outer end surface of the auxiliary crushing ring 9 is set to a semicircular end surface 92. The semicircular end surface setting helps the pocket knife to retract into the knife box, making it smoother, more stable and reliable.

[0036] When the present invention is used, the knife arm and the pocket knife are pre-connected to form an integral body, which is then retracted and placed in the inner distal position of the knife box, assembled and ready for use; during surgery, a small incision is first made on one side of the eyeball, the anterior lens capsule is torn open, the lens is pulled out of the capsule bag into the anterior chamber, and then the knife box is used to deliver the lens into the anterior chamber through the incision pre-made on one side of the eye, the traction arm is manipulated to control the knife arm and the pocket knife to extend from the knife box into the anterior chamber, after the knife arm extends out of the knife box, the memory alloy arm opens and opens with the pocket knife, the knife arm is operated, the pocket knife is controlled to hold the lens, and then the traction arm is pulled back, the traction arm pulls the knife arm, and the knife arm pulls the pocket knife together to retract, and when it touches the opening of the knife box, the left and right arc-shaped knife arms of the knife arm retract inward and enter In the knife box, the entry end of the pocket knife is also pre-entered. During the slow traction process, the lens cannot enter the knife box. The pocket knife that is retracted on the lens is squeezed at the mouth of the knife box or the outer end of the auxiliary crushing ring. The lens is squeezed and crushed out of the pocket knife through several crushing holes of the pocket knife to form several fine fragments (the size of these fragments meets the size requirements of subsequent negative pressure suction). A small part enters the knife box together with the pocket knife. The knife box is taken out and the fragments are directly extracted using the subsequent negative pressure suction equipment. There is no need to use ultrasonic equipment to assist in crushing. The entire process is purely physical crushing, which is easy to operate, fast, less traumatic, and has little side effects on patients. It is also low in cost and safe and reliable.

[0037] The present invention may be used as part of one or more larger surgical robot assemblies. The embodiments and descriptions of the present invention may indicate certain anatomical locations, types, or surgical procedures, but the present invention is equally applicable to other locations, types, and surgical procedures.

Claims

1. An apparatus for crushing the lens of an eye, characterized in that: It comprises a knife arm, a pocket knife, a traction arm and a knife box. The knife arm comprises a left arc-shaped knife arm and a right arc-shaped knife arm. The proximal end of the left arc-shaped knife arm is connected to the proximal end of the right arc-shaped knife arm and is simultaneously connected to the distal end of the traction arm. The distal end of the left arc-shaped knife arm is separately arranged from the distal end of the right arc-shaped knife arm. The upper end of the pocket knife is mounted on the left arc-shaped knife arm and the right arc-shaped knife arm. The pocket knife comprises a plurality of crushing hole knives formed by weaving filaments. The knife arm and the pocket knife can be stored in the knife box. The distal end of the traction arm is movably mounted in the knife box. The knife arm is made of memory alloy.

2. The device for crushing the lens of the eye according to claim 1, characterized in that: When the left arc-shaped knife arm and the right arc-shaped knife arm are outside the knife box, the distal ends of the left arc-shaped knife arm and the distal ends of the right arc-shaped knife arm form a non-fixed connection port or a gap.

3. An apparatus for crushing eye lens according to claim 1 or 2, characterized in that: The distal axis of the left arc-shaped blade arm is set as an arc-shaped hollow hole, the distal end of the right arc-shaped blade arm is designed as an arc-shaped cylindrical shaft, and the distal end of the right arc-shaped blade arm can be slidably located in the arc-shaped hollow hole at the distal end of the left arc-shaped blade arm; or the distal axis of the left arc-shaped blade arm and the distal axis of the right arc-shaped blade arm are both designed as arc-shaped hollow holes, and the distal ends of the left arc-shaped blade arm and the right arc-shaped blade arm are slidably connected via an arc-shaped cylindrical shaft; the outer diameter of the arc-shaped cylindrical shaft is smaller than the inner diameter of the arc-shaped hollow hole.

4. The device for crushing the lens of the eye according to claim 1, characterized in that: The pocket knife is designed to be one or more layers.

5. The device for crushing the eye lens according to claim 1, characterized in that: The upper end of the pocket knife is also designed with a plurality of rope loops formed by weaving filaments, and the plurality of rope loops are sleeved on the left arc-shaped knife arm and the right arc-shaped knife arm. The proximal ends of the left arc-shaped knife arm and the right arc-shaped knife arm are also respectively designed with fine holes, and a rope loop passes through each fine hole.

6. The device for crushing the lens of the eye according to claim 1, characterized in that: The opening of the knife box is also designed with an auxiliary crushing ring, which is installed at the opening of the knife box.

7. The device for crushing the eye lens according to claim 6, characterized in that: The auxiliary crushing ring is glued to the opening of the knife box.

8. The device for crushing the lens of the eye according to claim 6, characterized in that: The inner end of the auxiliary crushing ring is also designed with at least two claws, which are symmetrically installed on one side of the auxiliary crushing ring. The claws include a strip-shaped clamping body and a clamping tooth. One end of the strip-shaped clamping body is fixed to the top of the auxiliary crushing ring, and a clamping tooth is arranged on the outer side of the other end of the strip-shaped clamping body. At least two strip-shaped grooves are correspondingly arranged on the inner wall of the knife box, and a clamping groove for the clamping tooth to be inserted is opened at the bottom of the strip-shaped groove on the inner wall of the knife box. The strip-shaped clamping body is located in the strip-shaped groove, and the clamping tooth is mounted in the clamping groove.

9. An apparatus for crushing eye lens according to claim 6, 7 or 8, characterized in that: The outer end surface of the auxiliary pulverizing ring is configured as a semicircular arc end surface.

10. The device for crushing the eye lens according to claim 3, characterized in that: An annular protrusion is arranged inside the arc-shaped hollow hole, and a circular baffle is arranged at the end of the arc-shaped cylindrical shaft. The circular baffle is slidably located in the arc-shaped hollow hole, and the outer diameter of the circular baffle is larger than the inner diameter of the annular protrusion.

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