Craniotomy scissors

Abstract

The craniotomy scissors comprise a first scissor element and a second scissor element, the first scissor element comprises a first scissor head, a first scissor handle and a first finger ring which are sequentially and fixedly connected into a whole, and the second scissor element comprises a second scissor head, a second scissor handle and a second finger ring which are sequentially and fixedly connected into a whole. The first cutter handle is rotationally connected with the second cutter handle; a second tool bit on the second scissor element is bent in an arc shape, and a tool groove penetrating through the two sides of the second tool bit is formed in the second tool bit; the first tool bit is bent in an arc shape, and when the first tool bit is inserted into the tool groove, a shearing effect is achieved between the first tool bit and the inner walls of the second tool bits on the two sides of the tool groove. A suction channel is arranged in the first scissor element or the second scissor element, and an outlet of the suction channel can be externally connected with a negative pressure machine. According to the utility model, observation is facilitated, the probability of bumping brain tissues under the meninx in the meninx cutting process is effectively reduced, and the probability of cutting the brain tissues by mistake is effectively reduced, so that the meninx cutting device has great market application and popularization values.

Description

Technical Field

[0001] This utility model relates to scissors used in neurosurgical craniotomy, specifically a type of craniotomy scissors, and belongs to the field of medical surgical tool technology. Background Technology

[0002] Craniotomy, also known as craniotomy, typically involves making an incision in the scalp at the affected area, drilling a hole in the skull, removing the corresponding skull bone, and then using surgical scissors to cut the meninges to perform medical procedures. After the procedure, the skull is replaced and the wound is sutured. However, current surgical scissors are inconvenient for observation when cutting the meninges, and there is a risk of injuring the brain tissue beneath the meninges or even accidentally cutting brain tissue. Furthermore, current surgical scissors lack the ability to suction blood, requiring a special suction tube placed at the cutting site during surgery, which is cumbersome. Utility Model Content

[0003] The purpose of this invention is to solve the above problems by providing a craniotomy scissors that facilitates observation during meningotomy, effectively reduces the chance of accidentally damaging the brain tissue under the meninges and accidentally cutting surface blood vessels during the meningotomy process.

[0004] This utility model provides the following technical solution: a craniotomy surgical scissors, comprising a first scissor element and a second scissor element, wherein the first scissor element comprises a first blade head, a first handle, and a first ring sequentially and fixedly connected as a single unit, and the second scissor element comprises a second blade head, a second handle, and a second ring sequentially and fixedly connected as a single unit, with the first handle and the second handle rotatably connected; its characteristic is:

[0005] The second blade on the second scissor element is curved in an arc shape, and the second blade has a groove that runs through both sides of the second blade. The first blade is curved in an arc shape, and by rotating the first handle and the second handle, the first blade can be inserted into the groove or removed from the groove. When the first blade is inserted into the groove, there is a shearing action between the first blade and the inner walls of the second blade on both sides of the groove.

[0006] The first or second scissor element is provided with an attraction channel;

[0007] When the suction channel is set on the first scissor element, the suction channel is sequentially set in the first cutter head, the first cutter handle, and the first finger ring. The inlet of the suction channel is located on the first cutter head, and the outlet of the suction channel is located on the first finger ring. The outlet of the suction channel can be connected to a negative pressure machine.

[0008] When the suction channel is set on the second scissor element, the suction channel is sequentially set in the second cutter head, the second cutter handle, and the second ring. The inlet of the suction channel is located on the second cutter head, and the outlet of the suction channel is located on the second ring. The outlet of the suction channel can be connected to an external negative pressure machine.

[0009] The first tool holder and the second tool holder are connected by a hinge shaft, which passes through the first tool holder and the second tool holder.

[0010] The first tool holder has a curved portion, and the second tool holder has a limiting protrusion. When the first tool holder and the second tool holder are rotated, the limiting protrusion blocks the curved portion of the first tool holder, preventing the first tool holder and the second tool holder from continuing to rotate, thus limiting the rotation range of the first tool holder and the second tool holder.

[0011] This utility model features a reasonable and simple structure, making it convenient to use. It provides a craniotomy scissor. When cutting the meninges, an incision is first made in the meninges, and then the second blade on the second scissor element is inserted under the meninges. Because the second blade is curved, the contact between the blade and the brain tissue under the meninges is relatively flat, avoiding damage to the brain tissue. Simultaneously, the second blade has grooves running through both sides, allowing observation of the brain tissue under the meninges, thus enabling precise cutting of the meninges and significantly reducing the chance of accidental injury. By incorporating a suction channel within the first or second scissor element, the outlet of which can be connected to a negative pressure device, blood can be easily aspirated during the operation, eliminating the need for a separate tube placed at the surgical cutting site for blood aspiration, thus simplifying the procedure.

[0012] This invention facilitates observation during meningotomy, effectively reduces the risk of injury to the subdural brain tissue and accidental cutting of brain tissue, and has significant market application and promotion value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first scissor element in Embodiment 1 of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the second scissor element in Embodiment 1 of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0017] Figure 5 This is a schematic diagram of the structure of the first scissor element in Embodiment 2 of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the second scissor element in Embodiment 2 of this utility model;

[0019] In the figure: 1 First scissor element, 1-1 First blade head, 1-2 First blade handle, 1-3 First ring, 2 Second scissor element, 2-1 Second blade head, 2-2 Second blade handle, 2-3 Second ring, 3 Blade groove, 4 Suction channel, 5 Hinge shaft, 6 Limiting protrusion. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and the accompanying description. Example

[0021] See Figure 1 , 2 3. A craniotomy scissors, comprising a first scissor element 1 and a second scissor element 2. The first scissor element 1 comprises a first blade head 1-1, a first handle 1-2, and a first ring 1-3, which are sequentially and integrally fixedly connected. The second scissor element 2 comprises a second blade head 2-1, a second handle 2-2, and a second ring 2-3, which are sequentially and integrally fixedly connected. The first handle 1-2 and the second handle 2-2 are rotatably connected.

[0022] The second cutter head 2-1 is curved in an arc shape, and a groove 3 is opened on the second cutter head 2-1 that runs through both sides of the second cutter head 2-1; the first cutter head 1-1 is curved in an arc shape, and when the first cutter handle 1-2 and the second cutter handle 2-2 are rotated, the first cutter head 1-1 can be inserted into the groove 3 or removed from the groove 3. When the first cutter head 1-1 is inserted into the groove 3, there is a shearing action between the first cutter head 1-1 and the inner wall of the second cutter head 2-1 on both sides of the groove 3.

[0023] A suction channel 4 is also provided, which is located on the second scissor element 2. At this time, the suction channel 4 is sequentially located in the second cutter head 2-1, the second cutter handle 2-2, and the second ring 2-3. The inlet of the suction channel 4 is located on the second cutter head 2-1, and the outlet of the suction channel 4 is located on the second ring 2-3. The outlet of the suction channel 4 can be connected to a negative pressure machine.

[0024] Furthermore, the first tool holder 1-2 and the second tool holder 2-2 are hinged together by a hinge shaft 5, which passes through the first tool holder 1-2 and the second tool holder 2-2.

[0025] The first tool holder 1-2 has a curved portion, and the second tool holder 2-2 is provided with a limiting protrusion 6. When the first tool holder 1-2 and the second tool holder 2-2 are rotated, the limiting protrusion 6 blocks the curved portion of the first tool holder 1-2, so that the first tool holder 1-2 and the second tool holder 2-2 cannot continue to rotate, thus limiting the rotation range of the first tool holder 1-2 and the second tool holder 2-2. Example

[0026] See Figure 4 , 56. A craniotomy scissors, comprising a first scissor element 1 and a second scissor element 2. The first scissor element 1 comprises a first blade head 1-1, a first handle 1-2, and a first ring 1-3, which are sequentially and integrally connected. The second scissor element 2 comprises a second blade head 2-1, a second handle 2-2, and a second ring 2-3, which are sequentially and integrally connected. The first handle 1-2 and the second handle 2-2 are rotatably connected.

[0027] The second cutter head 2-1 is curved in an arc shape, and a groove 3 is opened on the second cutter head 2-1 that runs through both sides of the second cutter head 2-1; the first cutter head 1-1 is curved in an arc shape, and when the first cutter handle 1-2 and the second cutter handle 2-2 are rotated, the first cutter head 1-1 can be inserted into the groove 3 or removed from the groove 3. When the first cutter head 1-1 is inserted into the groove 3, there is a shearing action between the first cutter head 1-1 and the inner wall of the second cutter head 2-1 on both sides of the groove 3.

[0028] A suction channel 4 is also provided, which is located on the first scissor element 2. At this time, the suction channel 4 is sequentially located in the first cutter head 1-1, the first cutter handle 1-2, and the first ring 1-3. The inlet of the suction channel 4 is located on the first cutter head 1-1, and the outlet of the suction channel 4 is located on the first ring 1-3. The outlet of the suction channel 4 can be connected to a negative pressure machine.

[0029] Furthermore, the first tool holder 1-2 and the second tool holder 2-2 are hinged together by a hinge shaft 5, which passes through the first tool holder 1-2 and the second tool holder 2-2.

[0030] The first tool holder 1-2 has a curved portion, and the second tool holder 2-2 is provided with a limiting protrusion 6. When the first tool holder 1-2 and the second tool holder 2-2 are rotated, the limiting protrusion 6 blocks the curved portion of the first tool holder 1-2, so that the first tool holder 1-2 and the second tool holder 2-2 cannot continue to rotate, thus limiting the rotation range of the first tool holder 1-2 and the second tool holder 2-2.

Claims

1. A craniotomy scissors, comprising a first scissor element (1) and a second scissor element (2), wherein, The first scissor element (1) includes a first blade head (1-1), a first handle (1-2), and a first ring (1-3) that are sequentially and fixedly connected as a single unit; the second scissor element (2) includes a second blade head (2-1), a second handle (2-2), and a second ring (2-3) that are sequentially and fixedly connected as a single unit; the first handle (1-2) and the second handle (2-2) are rotatably connected; its characteristic is: The second blade (2-1) on the second scissor element (2) is curved in an arc shape, and the second blade (2-1) has a groove (3) that runs through both sides of the second blade (2-1); the first blade (1-1) is curved in an arc shape, and when the first handle (1-2) and the second handle (2-2) are rotated, the first blade (1-1) can be inserted into the groove (3) or leave the groove (3). When the first blade (1-1) is inserted into the groove (3), there is a shearing action between the first blade (1-1) and the inner wall of the second blade (2-1) on both sides of the groove (3); The first scissor element (1) or the second scissor element (2) is provided with an attraction channel (4); When the suction channel (4) is set on the first scissor element (1), the suction channel (4) is set in the first cutter head (1-1), the first cutter handle (1-2), and the first finger ring (1-3) in sequence. The inlet of the suction channel (4) is located on the first cutter head (1-1), and the outlet of the suction channel (4) is located on the first finger ring (1-3). The outlet of the suction channel (4) can be connected to a negative pressure machine. When the suction channel (4) is set on the second scissor element (2), the suction channel (4) is set in the second cutter head (2-1), the second cutter handle (2-2), and the second ring (2-3) in sequence. The inlet of the suction channel (4) is located on the second cutter head (2-1), and the outlet of the suction channel (4) is located on the second ring (2-3). The outlet of the suction channel (4) can be connected to a negative pressure machine.

2. The craniotomy scissors according to claim 1, characterized in that, The first tool holder (1-2) and the second tool holder (2-2) are hinged together by a hinge shaft (5), which passes through the first tool holder (1-2) and the second tool holder (2-2).

3. The craniotomy scissors according to claim 1, characterized in that, The first tool holder (1-2) has a curved portion, and the second tool holder (2-2) is provided with a limiting protrusion (6). When the first tool holder (1-2) and the second tool holder (2-2) are rotated, the limiting protrusion (6) blocks the curved portion of the first tool holder (1-2), so that the first tool holder (1-2) and the second tool holder (2-2) cannot continue to rotate, thus limiting the rotation range of the first tool holder (1-2) and the second tool holder (2-2).

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