CN-111388034-B - Surgical channel device and trigger structure

CN111388034BCN 111388034 BCN111388034 BCN 111388034BCN-111388034-B

Abstract

Embodiments of the present invention provide a surgical access device and trigger structure, relating to a neurosurgical access instrument. Aims to solve the problem of low operation efficiency of the prior channel device for operation. The surgical channel device includes a binding rope and a binding wire, the binding rope is used for winding on the metal net, the binding wire is used for passing through the binding rope and tightening the binding rope to compress the metal net, or the binding wire is used for separating from the binding rope to loosen the binding rope and the metal net. In the trigger structure, different first locking parts are used for being matched with the first clamping parts so as to drive the trolley to intermittently slide relative to the handle, so that the second clamping parts are matched with different second locking parts, and the trolley in sliding is locked at different positions of the handle. The channel device for operation passes through or breaks away from the binding rope through the binding wire, so that the compression and the expansion of the metal net are realized, and the assembly efficiency and the operation efficiency are both obviously improved. In the trigger structure, only the trigger is required to be operated in the whole process, the operation is simple, and the operation efficiency is improved.

Inventors

LENG DERONG
LV ZHUHAI
LV WENQI
LI CHANGQING
LONG LONG
WEI JIANYU
TANG CHENGWEI
DING LI

Assignees

南微纽诺医学科技(南京)有限公司
南京纽诺精微医学科技有限公司

Dates

Publication Date: 20260421
Application Date: 20200326
Priority Date: 20200326

Claims (13)

1. A surgical access device, comprising: A retractor comprising a metal mesh for forming a surgical channel; a conveyor having a distal end with a channel for placement of the wire mesh and openable; a binding rope for winding around the metal net, and a binding wire for passing through the binding rope and tightening the binding rope to compress the metal net; Or the binding wires are used for being separated from the binding ropes so as to loosen the binding ropes and the metal net; the conveyor comprises a puncture head, and a first hole communicated with the channel is formed in the puncture head; When the binding wire is in a straightened state, the distal end of the binding wire is accommodated in the first hole, and the proximal end of the binding wire extends in a direction away from the first hole and is used for moving under the action of external force so as to pull the binding wire to be separated from the binding rope; the conveyor also comprises an outer tube and a trigger structure, wherein the trigger structure comprises a trolley, a trigger and a handle, the trigger and the trolley are arranged on the handle in a sliding way, the trolley is connected with the outer tube, and the outer tube is driven to move in the sliding process of the trolley relative to the handle so as to open the channel; The trolley is provided with a first clamping part and a second clamping part, the trigger is provided with a plurality of first locking parts, the handle is provided with a plurality of second locking parts, and the number of the second locking parts is a plurality of first locking parts; The different first locking parts are used for being matched with the first clamping parts so as to drive the trolley to intermittently slide relative to the handle, so that the second clamping parts are matched with the different second locking parts, and the trolley in sliding is locked at different positions of the handle.
2. The surgical access device of claim 1, wherein: The binding ropes are used for sequentially penetrating through a plurality of meshes at the far end of the metal net so as to form a plurality of annular holes distributed along the circumferential direction of the metal net between the binding ropes and the metal net.
3. The surgical access device of claim 2, wherein: the binding wires are used for sequentially penetrating through the plurality of annular holes and tightening the binding ropes in a straightening state.
4. The surgical access device of claim 1, wherein: the conveyor further comprises a fixed block, wherein the fixed block is fixed in the channel and is provided with a limiting hole; The binding wire is used for movably penetrating through the limiting hole and limiting the fixing block.
5. The surgical access device of claim 4, wherein: the fixed block is arranged at the distal end of the channel and is positioned inside the metal net and used for preventing the metal net from moving towards the proximal end of the channel.
6. The surgical access device of claim 1, wherein: the puncture head is provided with an injection hole communicated with the channel and the outside; The conveyor further comprises a support tube and a luer connector, wherein the support tube is arranged in the channel, and the distal end of the support tube is connected with the puncture head and communicated with the injection hole; The luer fitting communicates with the support tube.
7. The surgical access device of claim 1, wherein: The conveyer further comprises a clamping ring, wherein the clamping ring is connected with the binding wire and used for pulling the binding wire to be separated from the binding rope under the action of external force.
8. The surgical access device of claim 7, wherein: The conveyer further comprises a clamping part, the clamping ring is used for being clamped with or separated from the clamping part, and when the clamping ring is separated from the clamping part, the clamping ring is used for pulling the binding wire to separate from the binding rope under the action of external force.
9. The surgical access device of claim 8, wherein: The clamping part is columnar; The snap ring comprises a semicircular ring and a toggle handle which are connected with each other, and the semicircular ring is used for being clamped with or separated from the outer wall of the clamping part.
10. The surgical access device of claim 1, wherein: The first locking part is used for being in locking fit with the first clamping part when the trigger slides relative to the handle along a first direction, so that the trigger pushes the trolley to slide along the first direction; The first locking part is used for being in sliding fit with the first clamping part when the trigger slides relative to the handle along the second direction, and the trolley is fixed relative to the handle when the first locking part is in sliding fit with the first clamping part; Wherein the first direction and the second direction are opposite.
11. The surgical access device of claim 10, wherein: The trigger structure also comprises a reset piece; The reset member is coupled between the trigger and the handle such that the trigger has a tendency to slide relative to the handle in the second direction.
12. The surgical access device of claim 11, wherein: The first locking part is a first one-way tooth convexly arranged on the trigger, and the second locking part is a second one-way tooth convexly arranged on the handle.
13. The surgical access device of claim 12, wherein: the first clamping part is a first elastic piece, one end of the first elastic piece is connected to the trolley, and the other end of the first elastic piece is used for being in locking fit with the first unidirectional tooth when moving along the first direction and in sliding fit with the first unidirectional tooth when moving along the second direction; The second clamping part is a second elastic piece, one end of the second elastic piece is connected to the trolley, and the other end of the second elastic piece is used for being in locking fit with the second unidirectional tooth when moving along the first direction and in sliding fit with the second unidirectional tooth when moving along the second direction.

Description

Surgical channel device and trigger structure Technical Field The present invention relates to a channel device for neurosurgery, and more particularly, to a channel device for surgery and a trigger structure. Background At present, the neurosurgery operation cavity is mainly formed by cutting a cerebral cortex fistulization to form an operation channel and cutting a cerebral cortex retractor to form an operation channel, and the operation channel is also formed by placing the cerebral retractor with a fixed shape after cutting the cerebral cortex or placing a finger stall of a glove after cutting the cerebral cortex in operation into an X-ray film. At present, the clinically common operation channel apparatus comprises a brain pressure plate, a double-layer transparent sleeve and the like. The above methods and devices all implement cutting damage to brain tissue, resulting in damage to brain tissue fibers and blood vessels and damage to brain function. In the prior art, a channel instrument is provided, after the puncture enters brain tissue, the brain tissue is retracted by the elasticity and flexibility of the channel instrument to form an operation channel, the cerebral cortex is not required to be cut, the injury of brain tissue fibers, the injury of blood vessels and the injury of brain functions are avoided, and the minimally invasive operation cavity channel is truly realized, wherein the substantial injury is the injury of a puncture channel. However, the existing channel device has the problem of low operation efficiency. Disclosure of Invention The object of the present invention consists, for example, in providing a surgical access device which is able to ameliorate the problems of the inefficiency of operation of existing surgical access devices. It is also an object of the present invention to provide a trigger construction that ameliorates the problem of the inefficiency of operation of existing surgical access devices. Embodiments of the invention may be implemented as follows: Embodiments of the present invention provide a surgical access device comprising a retractor comprising a metal mesh for forming a surgical access, a conveyor having a distal end with an openable access for receiving the metal mesh, a binding cord for wrapping around the metal mesh, and a binding wire for passing through the binding cord and tightening the binding cord to compress the metal mesh, or a binding wire for disengaging the binding cord to release the binding cord and the metal mesh. Optionally, the binding ropes are used for sequentially passing through a plurality of meshes at the distal end of the metal mesh so as to form a plurality of annular holes distributed along the circumferential direction of the metal mesh with the metal mesh. Optionally, the binding wires are used to sequentially pass through the plurality of loops and tighten the binding rope in the straightened state. The conveyer comprises a puncture head, a first hole communicated with the channel is formed in the puncture head, when the binding wire is in a straightened state, the distal end of the binding wire is contained in the first hole, and the proximal end of the binding wire extends in a direction away from the first hole and is used for moving under the action of external force, so that the binding wire is pulled to be separated from the binding rope. The conveyer optionally further comprises a fixed block which is fixed in the channel and provided with a limiting hole, and the binding wire is used for movably penetrating through the limiting hole and limiting on the fixed block. Optionally, a securing block is disposed at the distal end of the channel and inside the wire mesh for preventing movement of the wire mesh toward the proximal end of the channel. Optionally, the puncture head is provided with a communication channel and an external injection hole, the conveyor further comprises a support tube and a luer connector, the support tube is arranged in the channel, the distal end of the support tube is connected with the puncture head and communicated with the injection hole, and the luer connector is communicated with the support tube. Optionally, the conveyer further comprises a clamping ring, and the clamping ring is connected with the binding wires and used for pulling the binding wires to be separated from the binding ropes under the action of external force. The conveyer further comprises a clamping part, wherein the clamping ring is used for being clamped with or separated from the clamping part, and when the clamping ring is separated from the clamping part, the clamping ring is used for pulling the binding wire to be separated from the binding rope under the action of external force. The clamping ring comprises a semicircular ring and a toggle handle which are connected with each other, and the semicircular ring is used for being clamped with or separated from the outer wall of the clamping part. The conveyor comprises