Lacrimal sac scissors

Abstract

The invention belongs to the technical field of dacryocyst scissors, and particularly relates to dacryocyst scissors which comprise a scissor body, an occlusion end on one side of the scissor body and a transmission structure installed in the occlusion end, a scissor handle is arranged on the left side of the scissor body, an adjusting rod is arranged on the left side of the scissor handle, a scissor point and an elbow which are hinged to each other are arranged on one side of the occlusion end, and the transmission structure is installed in the transmission structure. The elbow and the tool nose are of an arc-shaped structure, and a switching structure is arranged at the joint of the meshing end and the adjusting rod. The occlusion end and the adjusting rod are quickly connected through the mounting piece, the occlusion end can be conveniently detached, a transmission structure arranged in the occlusion end can meet the requirement for multi-angle adjustment of the elbow and the tool nose, left bending and right bending are achieved on one pair of scissors, the lacrimal sac and the nasal mucosa can be cut open at multiple angles, and use is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of lacrimal sac scissors, in particular to a pair of lacrimal sac scissors. Background Art

[0002] In the lacrimal cystonasal anastomosis surgery for chronic dacryocystitis, the lacrimal sac fossa is separated to expose the lacrimal sac, and a bone window is opened in the lacrimal sac fossa to expose the nasal mucosa. The surgeon needs to cut open one side wall of the lacrimal sac and the nasal mucosa to connect the lacrimal sac cavity and the nasal cavity, thereby opening up a new lacrimal drainage channel. Therefore, the present invention proposes a lacrimal sac scissors.

[0003] In the prior art, there is a pair of lacrimal cystonasal anastomosis scissors with publication number CN105125257B, comprising a cross-hinged first blade body and a second blade body, the handle of the first blade body being provided with a first finger ring, the handle of the second blade body being provided with a second finger ring, the head of the first blade body being provided with a first blade tip bent toward the direction close to the head of the second blade body, the head of the second blade body being provided with a second blade tip, and the bending direction of the second blade tip being the same as that of the first blade tip.

[0004] The above technology has the advantages of simple structure, easy use, and the ability to smoothly enter the surgical position and accurately perform cutting. However, when in use, some existing lacrimal sac scissors cannot be left-curved and right-curved on the same lacrimal sac scissors. When in use, both left-curved and right-curved scissors need to be equipped at the same time, which increases the purchase cost of the scissors.

[0005] Therefore, a lacrimal sac scissors is proposed to address the above problems. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art and solve the problem of realizing left and right bends of lacrimal sac scissors on the same lacrimal sac scissors, a pair of lacrimal sac scissors is proposed.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the lacrimal sac scissors of the present invention include a blade, a occlusal end on one side of the blade, and a transmission structure installed in the occlusal end;

[0008] A scissors handle is arranged on the left side of the blade body, and an adjusting rod is arranged on the left side of the scissors handle. A mutually hinged knife tip and an elbow are arranged on one side of the biting end. The elbow and the knife tip are arc-shaped structures. A switching structure is arranged at the connection between the biting end and the adjusting rod.

[0009] Preferably, the transmission structure includes a gear arranged at the end of the blade tip, and a transmission rack is installed below the gear, a transmission cylinder is fixed to the right end of the transmission rack, and a rotating shaft is arranged inside the transmission cylinder, and the end of the rotating shaft is interconnected with the scissors handle.

[0010] Preferably, a transmission slide groove is provided on the outside of the transmission rack, and the transmission rack slides inside the engaging end through the transmission slide groove.

[0011] Preferably, the transmission rack and the gear are meshed with each other, and the transmission rack slides inside the engaging end through the transmission cylinder and the rotating shaft, and a silicone head is provided at the connection between the transmission cylinder and the rotating shaft, and the transmission cylinder forms a detachable structure with the rotating shaft through the silicone head.

[0012] Preferably, the switching structure includes a mounting piece, a clamping rod is provided inside the mounting piece, a support spring is provided on the surface of the clamping rod, a slide is connected to one side of the support spring, a pull ring is connected to one side of the slide, and a clamping groove is provided at the connection between the clamping rod and the adjusting rod.

[0013] Preferably, the mounting member forms a detachable structure through the clamping rod, the clamping slot and the adjusting rod, and the clamping slots are evenly distributed along the center line of the adjusting rod.

[0014] Preferably, the slide plate is elastically connected to the mounting member via a support spring, and the clamping rod runs through the interior of the mounting member.

[0015] Beneficial effects of the present invention:

[0016] The present invention provides a lacrimal sac scissors, which can quickly connect the occlusal end with the adjusting rod through the mounting parts, so that the occlusal end can be easily disassembled, and the transmission structure arranged inside the occlusal end can meet the multi-angle adjustment of the elbow and the blade tip, so that left bending and right bending can be achieved on a pair of scissors, and the lacrimal sac and nasal mucosa can be cut at multiple angles, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the adjusting rod of the present invention;

[0020] Figure 3 For the present invention Figure 2 A is an enlarged structural diagram;

[0021] Figure 4 It is a schematic diagram of the internal structure of the mounting piece of the present invention.

[0022] Legend:

[0023] 1. Blade; 2. Scissors handle; 3. Adjustment rod; 4. Mounting part; 5. Blade tip; 6. Rotating axis; 7. Gear; 8. Elbow; 9. Transmission rack; 10. Engaging end; 11. Transmission slide; 12. Transmission cylinder; 13. Support spring; 14. Slide plate; 15. Pull ring; 16. Slot; 17. Clamp rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Specific examples are given below.

[0026] See also Figure 1 to Figure 2 The present invention provides a lacrimal sac scissors, comprising a blade 1, characterized in that: an occlusal end 10 on one side of the blade 1, and a transmission structure installed in the occlusal end 10;

[0027] A scissors handle 2 is provided on the left side of the blade body 1, and an adjusting rod 3 is provided on the left side of the scissors handle 2. A mutually hinged knife tip 5 and an elbow 8 are provided on one side of the biting end 10. The elbow 8 and the knife tip 5 are arc-shaped structures, and a switching structure is provided at the connection between the biting end 10 and the adjusting rod 3.

[0028] When working, the scissors handle 2 pulls the rotating shaft 6 to the right, and the rotating shaft 6 can use the friction force of the silicone head to drive the transmission cylinder 12 to move to the right, and can drive the gear 7 to move backward through the transmission rack 9, and the elbow 8 and the blade tip 5 are engaged with each other.

[0029] Further, such as Figure 1 , Figure 2 and Figure 3 As shown, the transmission structure includes a gear 7 arranged at the end of the blade tip 5, and a transmission rack 9 is installed below the gear 7, a transmission cylinder 12 is fixed to the right end of the transmission rack 9, and a rotating shaft 6 is arranged inside the transmission cylinder 12, and the end of the rotating shaft 6 is connected to the scissors handle 2, and a transmission slide groove 11 is arranged outside the transmission rack 9, and the transmission rack 9 slides inside the occlusal end 10 through the transmission slide groove 11, the transmission rack 9 and the gear 7 are meshed with each other, and the transmission rack 9 slides inside the occlusal end 10 through the transmission cylinder 12 and the rotating shaft 6, and a silicone head is arranged at the connection between the transmission cylinder 12 and the rotating shaft 6, and the transmission cylinder 12 and the rotating shaft 6 form a detachable structure through the silicone head.

[0030] During operation, the mounting member 4 is sleeved on the adjusting rod 3, and the internal rotating shaft 6 is inserted into the transmission cylinder 12 and fixed. Since the transmission cylinder 12 and the rotating shaft 6 are directly provided with silicone heads, the friction between the two can be increased, so that the transmission cylinder 12 is used to drive the transmission rack 9 to slide back and forth in the transmission slide groove 11.

[0031] Further, such as Figure 1 , Figure 2 and Figure 4 As shown, the switching structure includes a mounting member 4, a clamping rod 17 is provided inside the mounting member 4, a support spring 13 is provided on the surface of the clamping rod 17, a slide plate 14 is connected to one side of the support spring 13, a pull ring 15 is connected to one side of the slide plate 14, a clamping groove 16 is provided at the connection between the clamping rod 17 and the adjusting rod 3, the mounting member 4 forms a detachable structure with the adjusting rod 3 through the clamping rod 17 and the clamping groove 16, and the clamping grooves 16 are evenly distributed along the center line of the adjusting rod 3, the slide plate 14 is elastically connected to the mounting member 4 through the support spring 13, and the clamping rod 17 runs through the interior of the mounting member 4.

[0032] During operation, the clamping rod 17 in the mounting member 4 moves inward under the squeezing action of the supporting spring 13. After the mounting member 4 is pushed to be completely clamped on the adjusting rod 3, the clamping rod 17 is clamped in the clamping groove 16. When the direction of the elbow 8 needs to be adjusted, the pull ring 15 can be pulled to both sides to drive the clamping rod 17 to disengage from the clamping groove 16, unlock the mounting member 4, and rotate the mounting member 4 to adjust the direction of the elbow 8.

[0033] Working principle:

[0034] First, the mounting member 4 can be directly sleeved on the adjusting rod 3, and the internal rotating shaft 6 can be inserted into the transmission cylinder 12 for fixing. Since the transmission cylinder 12 and the rotating shaft 6 are directly provided with a silicone head, the friction between the two can be increased, so that the transmission cylinder 12 is used to drive the transmission rack 9 to slide back and forth in the transmission slide groove 11, and the clamping rod 17 in the mounting member 4 moves inward under the extrusion of the supporting spring 13. After the mounting member 4 is pushed to be completely clamped on the adjusting rod 3, the clamping rod 17 is clamped in the clamping groove 16. When the direction of the elbow 8 needs to be adjusted, the pull ring 15 can be pulled to both sides to drive the clamping rod 17 to disengage from the clamping groove 16, unlock the mounting member 4, and rotate the mounting member 4 to adjust the direction of the elbow 8. A pair of scissors can achieve multi-directional shearing work;

[0035] Secondly, when cutting the lacrimal sac and nasal mucosa, the scissors handle 2 is pressed inward, and the scissors handle 2 pulls the rotating shaft 6 to the right, and the rotating shaft 6 can use the friction of the silicone head to drive the transmission cylinder 12 to move to the right, and can drive the gear 7 to move backward through the transmission rack 9, and the elbow 8 and the knife tip 5 are engaged with each other, so that the lacrimal sac and nasal mucosa can be cut off;

[0036] Then, the biting end 10 can be quickly connected to the adjusting rod 3 through the mounting part 4, so that the biting end 10 can be easily disassembled. The transmission structure arranged inside the biting end 10 can meet the multi-angle adjustment of the elbow 8 and the blade tip 5. Left and right bends can be achieved on a pair of scissors, and the lacrimal sac and nasal mucosa can be cut at multiple angles, which is more convenient to use.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A lacrimal sac scissors, comprising a blade (1), characterized in that: An engaging end (10) on one side of the blade body (1), and a transmission structure installed in the engaging end (10); A scissors handle (2) is arranged on the left side of the blade body (1), and an adjusting rod (3) is arranged on the left side of the scissors handle (2); a knife tip (5) and an elbow (8) which are hinged to each other are arranged on one side of the bite end (10); the elbow (8) and the knife tip (5) are arc-shaped structures; and a switching structure is arranged at the connection between the bite end (10) and the adjusting rod (3).

2. The lacrimal sac scissors according to claim 1, characterized in that: The transmission structure comprises a gear (7) arranged at the end of the blade tip (5), and a transmission rack (9) is installed below the gear (7), a transmission cylinder (12) is fixed to the right end of the transmission rack (9), and a rotating shaft (6) is arranged inside the transmission cylinder (12), and the end of the rotating shaft (6) is connected to the scissors handle (2).

3. The lacrimal sac scissors according to claim 2, characterized in that: A transmission slide groove (11) is arranged outside the transmission rack (9), and the transmission rack (9) slides inside the occlusal end (10) through the transmission slide groove (11).

4. The lacrimal sac scissors according to claim 2, characterized in that: The transmission rack (9) and the gear (7) are meshed with each other, and the transmission rack (9) is slidable inside the engaging end (10) through the transmission cylinder (12) and the rotating shaft (6), and a silicone head is provided at the connection between the transmission cylinder (12) and the rotating shaft (6), and the transmission cylinder (12) and the rotating shaft (6) form a detachable structure through the silicone head.

5. The lacrimal sac scissors according to claim 1, characterized in that: The switching structure comprises a mounting member (4), a clamping rod (17) is arranged inside the mounting member (4), a support spring (13) is arranged on the surface of the clamping rod (17), a slide plate (14) is connected to one side of the support spring (13), a pull ring (15) is connected to one side of the slide plate (14), and a clamping groove (16) is arranged at the connection between the clamping rod (17) and the adjusting rod (3).

6. The lacrimal sac scissors according to claim 5, characterized in that: The mounting member (4) forms a detachable structure with the adjusting rod (3) through the clamping rod (17), the clamping slot (16), and the adjusting rod (3), and the clamping slots (16) are evenly distributed at equal distances along the center line of the adjusting rod (3).

7. The lacrimal sac scissors according to claim 5, characterized in that: The slide plate (14) is elastically connected to the mounting member (4) via a supporting spring (13), and the clamping rod (17) runs through the interior of the mounting member (4).

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