Improved ophthalmology microscopic inner boundary membrane tweezers

Abstract

The invention discloses improved ophthalmology microscopic inner boundary membrane tweezers which comprise a barrel and an elbow, a connecting piece is arranged at the right end of the barrel, and the left end of the elbow is matched with the connecting piece in a hinged mode through a connecting shaft; a needle-shaped barrel is arranged at the right end of the elbow, tweezers heads are arranged in the needle-shaped barrel, a push plate is arranged at the left end of the barrel, and a driving mechanism matched with the push plate and the tweezers heads is arranged in the barrel. The fixed end of the tweezers head is hinged and matched with the needle-shaped cylinder, and the driving end of the tweezers head is hinged and matched with the right end of the second pull rod through a transmission rod. The improved ophthalmology microscopic inner boundary membrane tweezers are ingenious in design, practical in function and simple in structure, and effectively solve the problems that the direction of the tweezers heads of some ophthalmology microscopic inner boundary membrane tweezers is consistent with that of the outer tube, the direction of the tweezers heads cannot be adjusted relative to the outer tube, the holding angle of an operator is limited, and certain inconvenience is brought to the use process.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to an improved ophthalmic microscopic internal limiting membrane forceps. Background Art

[0002] Ophthalmic microscopic internal limiting membrane forceps are one of the commonly used fine surgical instruments in ophthalmic vitreoretinal surgery, which are used for the separation and peeling of the internal limiting membrane of the retina or retinal proliferative membrane tissue. The patent document with application number 202223524493.8 discloses a push-in microscopic internal limiting membrane forceps, including an outer tube, a forceps head and a threaded head. The right end of the outer tube is provided with a mounting head, and the right end of the mounting head is fixedly connected to a needle-shaped tube. The inside of the needle-shaped tube is slidably connected to a transmission slide rod, and the right end of the transmission slide rod is rotatably connected to a transmission rod, and the right end of the transmission rod is rotatably connected to a forceps head. However, the forceps head of the existing ophthalmic microscopic internal limiting membrane forceps is consistent with the direction of the outer tube, and the forceps head cannot be adjusted relative to the outer tube, which limits the operator's grip angle and brings certain inconveniences during use. Therefore, how to develop an improved ophthalmic microscopic internal limiting membrane forceps has become a problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0003] The purpose of the present invention is to provide an improved ophthalmic micro-internal limiting membrane forceps to solve the problem that the forceps head of some ophthalmic micro-internal limiting membrane forceps is in the same direction as the outer tube, the forceps head cannot be adjusted relative to the outer tube, which limits the holding angle of the operator and brings certain inconveniences during use.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The invention discloses an improved ophthalmic microscopic internal limiting membrane forceps, comprising a barrel and an elbow, wherein the right end of the barrel is provided with a connecting piece, and the left end of the elbow is hingedly matched with the connecting piece via a connecting shaft; the right end of the elbow is provided with a needle-shaped barrel, a forceps head is provided in the needle-shaped barrel, a push plate is provided at the left end of the barrel, and a driving mechanism matched with the push plate and the forceps head is provided in the barrel.

[0006] Furthermore, the fixed end of the tweezer head is hingedly matched with the needle-shaped tube, and the driving end of the tweezer head is hingedly matched with the right end of the second pull rod through a transmission rod.

[0007] Furthermore, the driving mechanism includes a first cavity and a second cavity, the first cavity and the second cavity are fixedly arranged in the cylinder, and the right end of the first cavity is connected with the right end of the second cavity through a connecting pipe.

[0008] Furthermore, a first piston cooperating with the extension rod at the right end of the push plate is disposed at the left end of the first cavity, and a second piston cooperating with the first pull rod is disposed at the left end of the second cavity.

[0009] Furthermore, the first cavity and the second cavity are filled with liquid.

[0010] Furthermore, the left end of the first pull rod passes through the second cavity and is connected to the right end surface of the second piston; the right end of the first pull rod is connected to the left end of the pull rope, and the right end of the pull rope is connected to the left end of the second pull rod.

[0011] Furthermore, the pull rope is arranged at the connection between the elbow and the cylinder; the pull rope cooperates with the elbow and the cylinder through a limiting mechanism.

[0012] Furthermore, the limiting mechanism includes a first limiting plate and a second limiting plate, the first limiting plate is fixedly arranged at the left end of the pull rope, and the second limiting plate is fixedly arranged at the right end of the pull rope; a first mounting block that slides with the pull rope is arranged in the cylinder, and a second mounting block that slides with the pull rope is arranged in the elbow; the right end face of the first limiting plate and the left end face of the first mounting block are matched through a first return spring, and the left end face of the second limiting plate and the right end face of the second mounting block are matched through a second return spring.

[0013] Furthermore, the pull rope is made of a steel wire rope, and the outer surface of the pull rope is wrapped with a rubber material.

[0014] Furthermore, a protective sleeve is provided at the connection between the cylinder and the elbow, and the protective sleeve is made of rubber material.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] The improved ophthalmic micro-internal limiting membrane forceps of the present invention realize the adjustment of the angle of the forceps head by setting a connecting shaft between the barrel and the elbow, expand the application scene, and improve the efficiency of the operation; both ends of the pull rope of the improved ophthalmic micro-internal limiting membrane forceps of the present invention cooperate with the mounting block through the limit plate and the reset spring, effectively avoiding the influence of the deformation of the pull rope on the operation of the forceps head when the connection angle between the barrel and the elbow changes; the driving mechanism of the improved ophthalmic micro-internal limiting membrane forceps of the present invention adopts hydraulic driving, and since the liquid cannot be compressed, the accuracy of the movement of the forceps head is guaranteed. In general, the improved ophthalmic micro-internal limiting membrane forceps of the present invention have ingenious design, practical functions, and simple structure, and effectively solve the problem that the forceps head of some ophthalmic micro-internal limiting membrane forceps is consistent with the direction of the outer tube, and the forceps head cannot be adjusted relative to the outer tube, which limits the grip angle of the operator and brings certain inconveniences during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] Figure 1A front view of the improved ophthalmic microscopic internal limiting membrane forceps of the present invention;

[0019] Figure 2 A cross-sectional view of the improved ophthalmic microscopic internal limiting membrane forceps of the present invention;

[0020] Figure 3 A cross-sectional view of the improved ophthalmic microscopic internal limiting membrane forceps of the present invention (without the protective cover);

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0024] Figure 7 This is the matching diagram of the cylinder and the elbow (vertical state);

[0025] Figure 8 This is the matching diagram of the cylinder and the elbow (bent state);

[0026] Fig. 9 This is a cross-sectional view of the pull rope.

[0027] Explanation of the accompanying drawings: 1. Cylinder; 101. Connecting plate; 102. First mounting block; 103. First pull rod; 2. Elbow; 201. Connecting shaft; 202. Second mounting block; 203. Second pull rod; 3. Push plate; 301. Extension rod; 4. Protective sleeve; 5. Driving mechanism; 501. First cavity; 502. Second cavity; 503. First piston; 504. Second piston; 505. Connecting pipe; 6. Limiting mechanism; 601. First limiting plate; 602. Second limiting plate; 603. First return spring; 604. Second return spring; 605. Pull rope; 7. Tweezer head; 701. Needle-shaped cylinder; 702. Transmission rod. DETAILED DESCRIPTION

[0028] like Figures 1 to 9 As shown, an improved ophthalmic micro-internal limiting membrane forceps includes a barrel 1 and an elbow 2, wherein a connecting piece 101 is provided at the right end of the barrel 1, and the left end of the elbow 2 is hingedly connected to the connecting piece 101 via a connecting shaft 201. The operator can adjust the direction of the elbow 2 by bending the elbow 2. Furthermore, in order to enable the elbow 2 to maintain its direction, a sufficiently large friction force needs to be set between the connecting shaft 201 and the connecting piece 101. The improved ophthalmic micro-internal limiting membrane forceps of the present invention achieves adjustment of the angle of the forceps head 7 by setting a connecting shaft 201 between the barrel 1 and the elbow 2, thereby expanding the application scenarios and improving the surgical efficiency.

[0029] A protective sleeve 4 is provided at the connection between the cylinder 1 and the elbow 2, and the protective sleeve 4 is made of rubber material.

[0030] A needle-shaped tube 701 is arranged at the right end of the elbow 2, and a tweezer head 7 is arranged inside the needle-shaped tube 701. A push plate 3 is arranged at the left end of the barrel 1, and a driving mechanism 5 cooperating with the push plate 3 and the tweezer head 7 is arranged inside the barrel 1.

[0031] The fixed end of the tweezers head 7 is hingedly matched with the needle-shaped tube 701, and the driving end of the tweezers head 7 is hingedly matched with the right end of the second pull rod 203 through the transmission rod 702. When the second pull rod 203 moves to the left, the tweezers head 7 can achieve a clamping action.

[0032] The driving mechanism 5 includes a first cavity 501 and a second cavity 502 . The first cavity 501 and the second cavity 502 are fixedly disposed in the cylinder 1 . The right end of the first cavity 501 is connected to the right end of the second cavity 502 via a connecting pipe 505 .

[0033] A first piston 503 cooperating with the extension rod 301 at the right end of the push plate 3 is disposed at the left end of the first cavity 501 , and a second piston 504 cooperating with the first pull rod 103 is disposed at the left end of the second cavity 502 .

[0034] The first cavity 501 and the second cavity 502 are filled with liquid. The left end of the first pull rod 103 passes through the second cavity 502 and is connected to the right end surface of the second piston 504; the right end of the first pull rod 103 is connected to the left end of the pull rope 605, and the right end of the pull rope 605 is connected to the left end of the second pull rod 203.

[0035] When in use, the operator drives the first piston 503 to move rightward through the push plate 3, thereby pressing the liquid in the first cavity 501 into the second cavity 502 through the connecting pipe 505, so that the second piston 504 pulls the first pull rod 103 to move leftward. The first pull rod 103 drives the second pull rod 203 to move leftward through the pull rope 605, thereby realizing the clamping action of the tweezer head 7.

[0036] The driving mechanism 5 of the improved ophthalmic microscopic internal limiting membrane forceps of the present invention is driven by hydraulic means. Since liquid cannot be compressed, the accuracy of the movement of the forceps head 7 is guaranteed.

[0037] Furthermore, the cross section of the first cavity 501 is made smaller, and the cross section of the second cavity 502 is made larger, so as to further improve the movement accuracy of the tweezer head 7 by extending the stroke of the push plate 3 .

[0038] The pull rope 605 is arranged at the connection between the elbow 2 and the cylinder 1 ; the pull rope 605 cooperates with the elbow 2 and the cylinder 1 through the limiting mechanism 6 .

[0039] The limiting mechanism 6 includes a first limiting plate 601 and a second limiting plate 602, the first limiting plate 601 is fixedly arranged at the left end of the pull rope 605, and the second limiting plate 602 is fixedly arranged at the right end of the pull rope 605; a first mounting block 102 that slides with the pull rope 605 is arranged in the cylinder 1, and a second mounting block 202 that slides with the pull rope 605 is arranged in the elbow 2; the right end face of the first limiting plate 601 and the left end face of the first mounting block 102 are matched through a first return spring 603, and the left end face of the second limiting plate 602 and the right end face of the second mounting block 202 are matched through a second return spring 604.

[0040] The pull rope 605 is made of steel wire rope, and the outer surface of the pull rope 605 is wrapped with rubber material.

[0041] Both ends of the pull rope 605 of the improved ophthalmic microscopic internal limiting membrane forceps of the present invention cooperate with the mounting block through a limit plate and a reset spring, which effectively avoids the influence of the deformation of the pull rope 605 on the operation of the tweezers head 7 when the connection angle between the cylinder 1 and the elbow 2 changes, and also realizes the self-reset of the tweezers head 7 and the push plate 3.

[0042] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An improved ophthalmic microscopic internal limiting membrane forceps, characterized in that: The invention comprises a cylinder (1) and an elbow (2); a connecting piece (101) is arranged at the right end of the cylinder (1); and the left end of the elbow (2) is hingedly connected to the connecting piece (101) via a connecting shaft (201); a needle-shaped cylinder (701) is arranged at the right end of the elbow (2); a tweezer head (7) is arranged inside the needle-shaped cylinder (701); a push plate (3) is arranged at the left end of the cylinder (1); and a driving mechanism (5) cooperating with the push plate (3) and the tweezer head (7) is arranged inside the cylinder (1).

2. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 1, characterized in that: The fixed end of the tweezer head (7) is hingedly matched with the needle-shaped tube (701), and the driving end of the tweezer head (7) is hingedly matched with the right end of the second pull rod (203) through a transmission rod (702).

3. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 1, characterized in that: The driving mechanism (5) comprises a first cavity (501) and a second cavity (502); the first cavity (501) and the second cavity (502) are fixedly arranged in the cylinder (1); the right end of the first cavity (501) is connected to the right end of the second cavity (502) via a connecting pipe (505).

4. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 3, characterized in that: The left end of the first cavity (501) is provided with a first piston (503) cooperating with the extension rod (301) at the right end of the push plate (3), and the left end of the second cavity (502) is provided with a second piston (504) cooperating with the first pull rod (103).

5. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 3, characterized in that: The first cavity (501) and the second cavity (502) are filled with liquid.

6. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 4, characterized in that: The left end of the first pull rod (103) passes through the second cavity (502) and is connected to the right end face of the second piston (504); the right end of the first pull rod (103) is connected to the left end of the pull rope (605), and the right end of the pull rope (605) is connected to the left end of the second pull rod (203).

7. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 6, characterized in that: The pull rope (605) is arranged at the connection between the elbow (2) and the cylinder (1); the pull rope (605) cooperates with the elbow (2) and the cylinder (1) through a limiting mechanism (6).

8. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 7, characterized in that: The limiting mechanism (6) includes a first limiting plate (601) and a second limiting plate (602), wherein the first limiting plate (601) is fixedly arranged at the left end of the pull rope (605), and the second limiting plate (602) is fixedly arranged at the right end of the pull rope (605); a first mounting block (102) which is slidably matched with the pull rope (605) is arranged in the cylinder (1), and a second mounting block (202) which is slidably matched with the pull rope (605) is arranged in the elbow (2); the right end face of the first limiting plate (601) and the left end face of the first mounting block (102) are matched through a first return spring (603), and the left end face of the second limiting plate (602) and the right end face of the second mounting block (202) are matched through a second return spring (604).

9. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 6, characterized in that: The pull rope (605) is made of a steel wire rope, and the outer surface of the pull rope (605) is wrapped with a rubber material.

10. The improved ophthalmic microscopic internal limiting membrane forceps according to claim 1, characterized in that: A protective sleeve (4) is provided at the connection between the cylinder (1) and the elbow (2), and the protective sleeve (4) is made of rubber material.

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