CN202604959U

CN202604959U - Cerebral dura mater-cutting operation knife

Info

Publication number: CN202604959U
Application number: CN 201120451007
Authority: CN
Inventors: 张世忠; 周媛; 姚晨; 赵信德; 周文芳; 卢国辉; 肖振勇; 何骁征
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-14
Filing date: 2011-11-14
Publication date: 2012-12-19
Anticipated expiration: 2021-11-14

Abstract

The utility model relates to a cerebral dura mater-cutting operation knife, and the operation knife consists of a knife handle (1) and a knife blade (2), wherein the cutting edge of the knife blade is crescent-shaped. The operation knife is characterized in that the knife handle (1) is provided with an L-shaped foot protector, an upper end of a vertical part (3-2) of the L-shaped foot protector (3) is connected with the knife handle (1), a lower end of the vertical part (3-2) extends along the back part of the knife blade (2) to below the knife point, and a horizontal part (3-1) extends toward the knife point and reaches beyond the knife point. The cerebral dura mater-cutting operation knife described in the utility model is advantaged by excellent safety performance, and operational simplicity and convenience.

Description

A kind ofly be used to cut dural scalpel

Technical field

This utility model relates to the medical surgery apparatus, is specifically related to a kind of dural scalpel of incision that is used for neurosurgery.

Background technology

The neurosurgery that relates to intracranial at present nearly all need be cut off cerebral dura mater, and used apparatus comprises sharp knife, dura forceps and dural scissors in the art.Common way is earlier with sharp knife small gap of teasing on cerebral dura mater, mentions a side cerebral dura mater with dura forceps then and exposes the gap, and the side shear arm with dural scissors stretches under the cerebral dura mater thereafter, just as the paper-cut sheet cerebral dura mater is cut off afterwards.But subdural shear arm patient can't see all the time in this process, and only reliable experience and feel are operated.The operation principle of cerebral dura mater shears is exactly to rely on of shear arm to close just can cut off cerebral dura mater; Under the few cases; When higher or cerebral dura mater and cerebral tissue adhesion are tight such as intracranial pressure; Gap between cerebral dura mater and the cerebral cortex is very little, at this moment cuts off cerebral dura mater and damages cerebral cortex and blood vessel easily, incurs loss through delay the operation process.In order to address this problem, can isolate at cotton sheet of cerebral dura mater underlay or brain spatula, damage to reduce, but operating process is loaded down with trivial details time-consuming.

In order to solve above-mentioned technical problem better; Granted publication number discloses similar technical scheme in three utility model patents of CN2708850Y, CN201275110Y and CN201631318U; The technological means that these technical schemes adopt all is to be provided with one in the bottom of the lower scissors arm of dural scissors to stretch out the feeler lever that this cuts the arm end; This feeler lever can play the effect that the guiding shears is sheared; Prevent shears damage cerebral tissue, also have the effect of peeling off cerebral dura mater and cerebral tissue in advance simultaneously.But all there is following deficiency in these technical schemes: 1, dural scissors is in the process of shearing meninges, and one one of shear arm closes, and when open, still can push blood vessel or cerebral tissue, might damage it; 2, subdural lower scissors arm can't be seen all the time, increases the operation technique difficulty; 3, the cerebral dura mater edge of cutting off often is an indentation, when closing cranium, is difficult to cerebral dura mater is closely sewed up like this; 4: most doctor is a dextromanuality, and is relatively more difficult when left hand uses shears to do accurately activity.

Common scalpel generally is made up of handle of a knife and blade, and wherein, handle of a knife is provided with the standardized tool rest that is used to install blade, according to different operations, selects for use dissimilar blades to be installed on the handle of a knife and uses.Because the end of common scalpel all is sharp point of a knife, does not have protector, cut cerebral dura mater if use scalpel, operation easier is bigger, easier injured brain tissue, so generally carry out the cerebral dura mater cutting in clinical without scalpel.

Summary of the invention

This utility model technical problem to be solved provides good, easy and simple to handle being used to of a kind of security performance and cuts dural scalpel.

This utility model solves this technical problem the technical scheme that is adopted:

A kind ofly be used to cut dural scalpel; This scalpel is that meniscate blade constitutes by handle of a knife and cutting edge; It is characterized in that described handle of a knife is provided with the foot that protects of a L type, the higher authorities that protect sufficient vertical portion of this L type are connected with handle of a knife; Following back along blade extends to the below of point of a knife, and horizontal part is to the point of a knife extension and exceed point of a knife.

This utility model is described to be used to cut dural scalpel, and wherein, described following back along blade of protecting sufficient vertical portion extends to the 1mm place, below of point of a knife, and horizontal part extends and exceeds point of a knife 3～5mm to point of a knife.

This utility model is described to be used to cut dural scalpel, and wherein, the described end that protects sufficient horizontal part has warping part upwards.The benefit that this warping part is set is that in the cutting process, this warping part can be convenient to blade cerebral dura mater is cut in advance cerebral dura mater jack-up.

This utility model is described to be used to cut dural scalpel, and wherein, described to protect that foot and handle of a knife do can be an integral body, also can make two independently parts; When making independently parts, can one transverse slat be arranged in the described terminal horizontal expansion of protecting sufficient vertical portion, this transverse slat is close on the handle of a knife, and a screw passes said transverse slat and will protect foot and be fixed on the handle of a knife.Described screw is the annular knurl flat head screw preferably, and so when mounted, direct hand-tight make-up, and do not need screwdriver is to reduce the workload that apparatus is carried out disinfection before the operation.

This utility model is described to be used to cut dural scalpel; When undergoing surgery operation; The motion of blade approaches the rectilinear motion on parallel cerebral tissue surface; Separate by protecting sufficient horizontal part between the point of a knife of blade and the cerebral tissue simultaneously, so blade can not cause crush injury and stab in cutting process to cerebral tissue and blood vessel.Simultaneously, in the cutting process, point of a knife is visible all the time, so operation easier reduces greatly, and right-hand man's operation is all more convenient.In addition, use this scalpel to cut continuously, therefore can avoid the cerebral dura mater edge indentation to occur, tight stitching cerebral dura mater during the cranium of convenient pass, the probability of happening of reduction cerebrospinal leak.

Description of drawings

Fig. 1～Fig. 4 is the described a kind of structural representation that is used to cut a specific embodiment of dural scalpel of this utility model, and wherein, Fig. 1 is a front view, and Fig. 2 is a right view, and Fig. 3 is a rearview, and Fig. 4 is the partial enlarged drawing of Fig. 1.

Fig. 5 and Fig. 6 are the described a kind of structural representation that is used to cut another specific embodiment of dural scalpel of this utility model, and wherein Fig. 5 is a front view, and Fig. 6 is a partial perspective view.

Fig. 7 is the described a kind of structural representation that is used to cut the 3rd specific embodiment of dural scalpel of this utility model.

Fig. 8 is the described a kind of user mode figure that is used to cut dural scalpel of this utility model.

The specific embodiment

Embodiment 1

Referring to Fig. 1～Fig. 4, it is that meniscate blade 2 constitutes by handle of a knife 1 with cutting edge that being used in this example cut dural scalpel, and an end of handle of a knife 1 is provided with the standardized tool rest 1-1 that is used to install blade 2, and the installing port of described blade 2 is stuck on this tool rest 1-1.Described handle of a knife 1 protects foot 3 what an end that is positioned at tool rest 1-1 was provided with the L type, and this protects foot the higher authorities and handle of a knife 1 of 3 and fuses the consistency of thickness of its width and handle of a knife 1; Said following back along blade 2 of protecting the vertical 3-2 of portion of foot 3 extends to the 1mm place, below of point of a knife, and its horizontal part 3-1 is towards the extension of point of a knife direction and exceed point of a knife 4mm.Protect the equal rounding of each seamed edge of foot 3, to prevent to scratch cerebral tissue.

Embodiment 2

Referring to Fig. 5 and Fig. 6, in this example, described handle of a knife 1 is two independently parts with protecting foot 3, and the vertical 3-2 of portion that protects foot 3 is fixed on the side of handle of a knife 1 through a plus screw 4.The described end that protects foot 3 is provided with warping part 3-3 obliquely, and the upper end of this warping part 3-3 is higher than the point of a knife 1.5mm of blade 2.

Other embodiments beyond present embodiment is above-mentioned are identical with embodiment 1.

Embodiment 3

Referring to Fig. 7; The difference of present embodiment and embodiment 2 is; The terminal horizontal expansion of the vertical 3-2 of portion that protects foot 3 in this example has a transverse slat 3-5; This transverse slat 3-5 is close on the bottom surface of handle of a knife 1, and a screw 5 passes said transverse slat and will protect foot and 3 be fixed on the handle of a knife 1, and described screw 5 is the annular knurl flat head screw.

Referring to Fig. 8, the use that being used to of this utility model cut dural scalpel is: earlier with sharp knife small gap of teasing on cerebral dura mater 6, the end that will protect enough 3 horizontal part 3-1 then stretches into cerebral dura mater 6 times; Separate cerebral dura mater 6 and cerebral tissue 7; 6 times gaps of cerebral dura mater are increased, mention cerebral dura mater 6 gently with protecting foot 3 then, 6 times gaps of cerebral dura mater are further increased; Thereafter advance scalpel, blade is taken advantage of a situation cerebral dura mater 6 is cut.

Claims

1. one kind is used to cut dural scalpel; This scalpel is that meniscate blade (2) constitutes by handle of a knife (1) and cutting edge; It is characterized in that what described handle of a knife (1) was provided with a L type protects foot (3), the higher authorities of the vertical portion (3-2) that protects foot (3) of this L type are connected with handle of a knife (1); Following back along blade (2) extends to the below of point of a knife, and horizontal part (3-1) is to the point of a knife extension and exceed point of a knife.

2. a kind of dural scalpel that is used to cut according to claim 1; It is characterized in that; Described following back along blade (2) of protecting the vertical portion (3-2) of foot (3) extends to the 1mm place, below of point of a knife, and horizontal part (3-1) is to the point of a knife extension and exceed point of a knife 3～5mm.

3. a kind of dural scalpel that is used to cut according to claim 1 is characterized in that, the described end that protects the horizontal part (3-1) of foot (3) has warping part (3-3) upwards.

4. according to claim 1,2 or 3 described a kind of dural scalpels that are used to cut, it is characterized in that described vertical portion (3-2) and the handle of a knife (1) that protects foot (3) is one.

5. according to claim 1,2 or 3 described a kind of dural scalpels that are used to cut; It is characterized in that; The described terminal horizontal expansion of protecting the vertical portion (3-2) of foot (3) has a transverse slat (3-5); This transverse slat (3-5) is close on the handle of a knife (1), and a screw (5) passes said transverse slat (3-5) and will protect foot (3) and be fixed on the handle of a knife (1).

6. a kind of dural scalpel that is used to cut according to claim 5 is characterized in that described screw (5) is the annular knurl flat head screw.