CN113892984A

CN113892984A - Neurosurgery meninges hook

Info

Publication number: CN113892984A
Application number: CN202111132560.9A
Authority: CN
Inventors: 王晓野; 孙义程; 林娟娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-07

Abstract

The invention discloses a neurosurgery meninges hook, which belongs to the field of medical instruments and comprises a handle and a rotating part fixedly connected with the handle, wherein the handle is used for being held by an operator, the rotating part comprises an arc-shaped fixed part and two arc-shaped sliding parts respectively positioned at two ends of the arc-shaped fixed part, the arc-shaped fixed part is fixedly connected with a first drag hook, the tail end of the arc-shaped sliding part is provided with a second drag hook, the arc center of the arc-shaped sliding part is superposed with the arc center of the arc-shaped fixed part, and when the meninges is pulled by the first drag hook and the second drag hook, and the pulling force applied to the handle is changed, the arc-shaped sliding part is driven to rotate around the arc center relative to the arc-shaped fixed part so as to change the relative position and angle of the second drag hook and the first drag hook.

Description

Neurosurgery meninges hook

Technical Field

The present invention relates to the field of medical devices.

Background

In the surgical operation, doctors can use medical instruments for stretching tissues during the operation, so that other tissues affecting the observation of the focus can be stretched to one side, and the doctors can observe the specific state of the focus. A retractor is typically used in a conventional medical instrument for pulling tissue.

The existing draw hook is rigid in the meninges used for neurosurgery, the meninges are seriously affected by shaking of a human body, and the meninges at different positions cannot be drawn once only by one draw hook which only has one hook head.

Disclosure of Invention

The invention aims to: the utility model provides a neurosurgery meninges hook, including handle and the rotation portion with handle fixed connection, the handle be used for operating personnel to grip, the rotation portion is including arc fixed part and two arc sliding parts that are located arc fixed part both ends respectively, the first drag hook of arc fixed part fixedly connected with, the end of arc sliding part is equipped with second drag hook, arc the arc heart of arc sliding part and the coincidence of the arc heart of arc fixed part, when first drag hook and second drag hook hold the meninges, when the pulling force that the handle received changes, arc sliding part is driven relative arc fixed part and rotates and then change the relative position and the angle of second drag hook and first drag hook round the arc heart. The meninges retractor can realize that a plurality of retractors are operated by one hand, and meanwhile, the stretching forces of different retractors can be automatically controlled to be the same, so that the retractor is balanced in stretching.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a handle;

FIG. 3 is a schematic view of the rotating portion and the retractor;

the labels in the figure are: 1-handle, 11-handle body, 12-movable groove body, 121-upper cavity, 122-lower cavity, 13-rod body, 131-first rod body, 132-second rod body, 133-first piston, 134-first air channel, 135-baffle, 2-rotating part, 21-arc fixing part, 211-adjusting cavity, 212-second air channel, 213-air channel part, 214-spring, 22-arc sliding part, 220-arc rod, 221-end rod, 222-side cavity, 223-third air channel, 2230-outlet, 3-first draw hook, 31-draw hook fixing rod, 311-central cavity, 312-fourth air channel, 32-draw hook movable rod and 4-second draw hook.

Detailed Description

As shown in figure 1, the embodiment discloses a neurosurgery meninges hook for neurosurgery meninges drafting, the meninges hook comprises a handle 1 and a rotating part 2 fixedly connected with the handle, the handle is used for being held by an operator, and as shown in figure 2, the handle has a curved shape so as to be convenient for the operator to hold.

The rotating part 2 comprises an arc-shaped fixing part 21 and two arc-shaped sliding parts 22 respectively positioned at two ends of the arc-shaped fixing part 21), the arc-shaped fixing part 22 is fixedly connected with a first draw hook 3, the tail end of the arc-shaped sliding part 22 is provided with a second draw hook 4, and each arc-shaped sliding part 22 is provided with one draw hook. The retractor is generally of a shape design that extends in one dimension, which may be referred to as the axial direction of the retractor, which is also generally the direction in which the retractor pulls in tissue when in use.

As shown in fig. 3, the arc center of the arc sliding portion coincides with the arc center of the arc fixing portion, when the meninges is pulled by the first drag hook and the second drag hook, and the pulling force applied to the handle changes, the arc sliding portion is driven to rotate around the arc center relative to the arc fixing portion 21, so that the relative position and the angle between the second drag hook 4 and the first drag hook are changed, and the rotation direction of the arc sliding portion is the X direction shown in fig. 3. When a person pulls the handle (for example, pulls in the direction Y in the extended drawing 3), the second draw hook extends the axial direction of the draw hook to move, so that the tissue is unfolded, but if the arc sliding part and the arc fixing part 21 do not rotate, the hook heads at the tail ends of the two draw hooks only move along the direction Y, which is not beneficial to the unfolding of the meningeal tissue.

In a more specific embodiment, as shown in fig. 2, an adjusting channel is disposed inside the arc-shaped fixing portion 21, the adjusting channel is arc-shaped, the arc centers of the arc-shaped fixing portions coincide, one end of the arc-shaped sliding portion 22 is inserted into the adjusting channel and forms a sealed adjusting cavity 211 therebetween, when the handle is pulled to change, the air pressure in the adjusting cavity can be changed to drive the arc-shaped sliding portion 22 to slide in the adjusting channel, so that the arc-shaped sliding portion is driven to rotate around the arc center relative to the arc-shaped fixing portion 22.

The handle comprises a rod body 13 and a handle body 11, the trend of relative movement of the rod body and the handle body can be limited, the handle body is used for holding, the rod body 13 and the arc-shaped fixing part 21 are fixedly connected or integrally formed, and a movable groove body 12 is arranged in the rod body; the body of rod is including the first body of rod 131, the second body of rod 132 of being connected with the first body of rod 131, the first piston 133 of being connected with the second body of rod, the cross-section of the first body of rod and first piston match with the cross-section of activity cell body, the cross-section of the second body of rod be less than activity cell body 12, first piston 133, the second body of rod (132) insert in the middle of the activity cell body 12, be equipped with the baffle in the activity cell body, the second body of rod passes the baffle, can form sealed upper chamber portion 121 between baffle and the first piston, cavity portion 122 is formed to the bottom of first piston and activity cell body 12, when the body of rod and handle body relative movement, cavity portion has relatively stable atmospheric pressure down, in the middle of a concrete embodiment, cavity portion and external atmosphere intercommunication down, it is equipped with a lateral wall passageway.

At least one first air channel 134, two in the specific embodiment, is disposed in the first rod 131. The first air channel 134 connects the upper chamber part 121 and the adjusting chamber 211, and particularly the first air channel 134 passes through the second rod, when the rod 13 and the handle 11 move relatively, the first piston 133 moves in the movable groove 12 to change the air pressure of the upper chamber part 121 and the adjusting chamber 211.

When the handle is used, the handle moves towards the first direction, when the handle body 11 and the rod body 13 have a tendency of relative separation, the first piston moves upwards (according to the direction of the drawing), the first piston 133 presses the upper cavity part 121, so that the air pressure of the upper cavity part 121 and the adjusting cavity 211 communicated with the upper cavity part is increased, the two arc-shaped sliding parts 22 are further pressed to rotate towards two sides, the positions and the bottoms of the second draw hooks on two sides are changed, and meanwhile, the first draw hook and the second draw hook both have downward displacement.

When the meninges is open by the draw hook, the shape of different meninges department is different, the tractive effort that probably leads to different position drag hooks is different, under the condition of the three drag hook of a handle operation, it is too big to probably lead to local tractive effort, in order to solve above-mentioned problem, in the modified scheme, first drag hook 3 is including the drag hook dead lever 31 with arc fixed part 21 fixed connection, drag hook movable rod 32, be equipped with the recess in the drag hook dead lever 31, drag hook dead lever 32 inserts in the middle of the recess and forms sealed central cavity 311 in the bottom of recess, the removal trend of keeping away from of drag hook dead lever and drag hook movable rod is restricted, if through the spring restriction.

Arc sliding portion 22 including insert the arc pole 220 of arc fixed part and the terminal pole 221 of arc pole end-to-end connection, terminal pole 221 and the perpendicular design of arc pole are equipped with the concave part in the terminal pole, insert second drag hook 4 in the concave part, the second drag hook forms lateral part cavity 222 in the bottom of concave part, the trend of keeping away from of second drag hook and terminal pole is restricted, lateral part cavity and central cavity 311 intercommunication. The arc fixing portion is internally provided with a second air passage 212, the arc sliding portion is internally provided with a third air passage 223, the draw hook fixing rod 31 is internally provided with a fourth air passage 312, and the central cavity 311 is communicated with the side cavity 222 through the second air passage, the third air passage and the fourth air passage. The arc-shaped fixing part 21 is internally provided with a ventilation groove part 213 which is respectively communicated with the second ventilation channel 212 and the third ventilation channel 223, and when the arc-shaped rod moves in the arc-shaped fixing part 21, an outlet 2230 of the third ventilation channel 223 is always communicated with the ventilation groove part. The drag hook movable rod is connected with the bottom of the central cavity through a spring, and the bottom of the second drag hook is connected with the bottom of the lateral cavity through a spring.

Since the three hooks and the corresponding springs can adopt the same specification, the tension of the meninges on the three hooks is related to the corresponding cavities (the central cavity 311 and the side cavities 222), and the pneumatic pressure can be maintained at the same level due to the communication of the three cavities, so that the tension of the meninges on the tail ends of the three hooks is basically the same. When the retractor is used, the three springs are not needed, the central cavity and the side cavities form negative pressure smaller than atmosphere, and the retractor is normally located at the bottom of the cavity.

Claims

1. The utility model provides a neurosurgery meninges hook, a serial communication port, including handle (1) and with handle fixed connection's rotation portion (2), the handle be used for operating personnel to grip, rotation portion (2) including arc fixed part (21) and two arc sliding part (22) that are located arc fixed part (21) both ends respectively, arc fixed part (22) the first drag hook (3) of fixedly connected with, the end of arc sliding part (22) is equipped with second drag hook (4), arc the arc heart of arc sliding part and the arc heart coincidence of arc fixed part, when first drag hook and second drag hook pulled the meninges, when the pulling power that the handle received changed, the relative arc fixed part of arc sliding part (22) was driven rotated and then changed the relative position and the angle of second drag hook (4) and first drag hook round the arc heart.

2. The neurosurgical meningeal hook according to claim 1, wherein the arc-shaped fixing part (21) is internally provided with an adjusting channel, the adjusting channel is arc-shaped, the arc centers of the arc-shaped fixing parts coincide, one end of the arc-shaped sliding part (22) is inserted into the adjusting channel and forms a sealed adjusting cavity (211) in the middle, and when the handle is subjected to tension change, the air pressure of the adjusting cavity can be changed to drive the arc-shaped sliding part (22) to slide in the adjusting channel, so that the arc-shaped sliding part is driven to rotate around the arc centers relative to the arc-shaped fixing part (22).

3. The neurosurgical meningeal hook according to claim 2, wherein the handle comprises a rod body (13) and a handle body (11), the trend of relative movement of the rod body and the handle body can be limited, the handle body is used for holding, the rod body (13) and the arc-shaped fixing part (21) are fixedly connected or integrally formed, and a movable groove body (12) is arranged in the rod body; the body of rod is including first body of rod (131), the second body of rod (132) of being connected with first body of rod (131), first piston (133) of being connected with the second body of rod, the cross-section of first body of rod and first piston match with the cross-section of activity cell body, the cross-section of the second body of rod be less than activity cell body (12), first piston (133), second body of rod (132) insert in the middle of the activity cell body (12), be equipped with the baffle on the activity cell body, the second body of rod passes the baffle, can form sealed last chamber portion (121) between baffle and the first piston, chamber portion (122) under the bottom formation of first piston and activity cell body (12), when the body of rod and handle body relative movement, chamber portion has relatively stable atmospheric pressure down.

4. The neurosurgical meningeal hook according to claim 3, wherein at least one first air passage (134) is arranged in the first shaft (131), and the first air passage (134) connects the upper cavity part (121) and the regulating cavity (211); when the rod body (13) and the handle body (11) move relatively, the first piston (133) moves in the movable groove body (12) to change the air pressure of the upper cavity part (121) and the adjusting cavity (211).

5. The neurosurgical meningeal hook according to any one of claims 1 to 4, wherein the first retractor (3) comprises a retractor fixing rod (31) and a retractor moving rod (32) which are fixedly connected with the arc-shaped fixing part (21), a concave part is arranged in the retractor fixing rod (31), the retractor fixing rod (32) is inserted into the concave part and forms a sealed central cavity (311) at the bottom of the concave part, and the moving trend of the retractor fixing rod and the retractor moving rod away from each other is limited.

6. The neurosurgical meningeal hook according to claim 5, wherein the arc-shaped sliding part (22) comprises an arc-shaped rod (220) inserted into the arc-shaped fixing part and a tail end rod (221) connected with the tail end of the arc-shaped rod, the tail end rod (221) and the arc-shaped rod are vertically designed, a concave part is arranged in the tail end rod, a second draw hook (4) is inserted into the concave part, the second draw hook forms a side cavity (222) at the bottom of the concave part, the moving trend of the second draw hook and the tail end rod away from each other is limited, and the side cavity is communicated with the central cavity (311).

7. The neurosurgical meningeal hook according to claim 6, wherein a second vent passage (212) is arranged in the arc-shaped fixing part, a third vent passage (223) is arranged in the arc-shaped sliding part, a fourth vent passage (312) is arranged in the draw hook fixing rod (31), and the central cavity (311) is communicated with the side cavity (222) through the second vent passage, the third vent passage and the fourth vent passage.

8. The neurosurgical meningeal hook according to claim 7, wherein the arc-shaped fixing part (21) is internally provided with a ventilation groove part (213) which is respectively communicated with the second ventilation channel (212) and the third ventilation channel (223), and when the arc-shaped rod moves in the arc-shaped fixing part (21), the outlet (2230) of the third ventilation channel (223) is always communicated with the ventilation groove part.

9. The neurosurgical meningeal hook of claim 8, wherein the movable rod of the drag hook is connected to the bottom of the central cavity by a spring, and the bottom of the second drag hook is connected to the bottom of the lateral cavity by a spring.