CN218356316U - Dura forceps for neurosurgery - Google Patents

Abstract

The utility model discloses dura mater tweezers for neurosurgery, which comprises a connecting part, a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are connected with the connecting part; the bending part of the first clamping part and the bending part of the second clamping part are formed by bending the far end of the first clamping part and the far end of the second clamping part in the same direction in a horizontal plane; the bending part of the first clamping part and the bending part and the connecting part of the second clamping part are positioned in the same plane; under the normal state, the first clamping part and the second clamping part are kept separated under the elastic action; in the using state, the far end of the first clamping part and the far end of the second clamping part clamp the dura mater under the action of pressing force and lift and fix the dura mater from the intracranial to the extracranial. The utility model discloses be convenient for go deep into narrow and small lacuna between skull medial surface to the brain surface and carry the accurate operation of holding between the fingers fixed dura mater, effectively ensure to carry angle, dynamics and the operating stability of holding between the fingers, reduce the damage.

Description

Dura forceps for neurosurgery

Technical Field

The utility model relates to the field of medical equipment, more specifically relates to a dura mater tweezers is used in neurosurgery.

Background

During neurosurgery, exposing, cutting and pinching the dura mater is one of the key steps. The cranium brain is composed of skin, subcutaneous tissue, skull, dura mater, arachnoid, pia mater and brain tissue from outside to inside. Neurosurgery is an important means for treating common diseases of the nervous system, such as craniocerebral trauma, tumor, cerebrovascular disease and the like, and is also one of the surgical operations with the highest risk. The traditional neurosurgical craniotomy procedure mainly comprises the following three steps: opening a skull: refers to the process of opening the skin, subcutaneous tissue, skull and dura mater layer by layer from outside to inside by doctors using tools such as circular knives, abrasive drills and meninges forceps to expose the focus; and (3) removing a focus: the doctor uses tools such as a microscope, an endoscope, bipolar coagulation, an aspirator and the like to continue to expose and remove the focus; guan Lu: refers to the process of reposition and repair of dura mater, skull, subcutaneous tissue and skin from inside to outside by doctors using meninges forceps, suture instrument and other tools. Whether in craniotomy, excision of focus or final craniotomy, the dura mater surrounding the brain tissue needs to be cut, lifted and pinched and the like in the whole operation process.

Dural forceps are an important tool indispensable to neurosurgery.

Due to the complexity, fragility and functional importance of the craniocerebral structure, most neurosurgery operations such as glioma, meningioma and the like need to be completed by doctors in narrow spaces between the cranium and the dura mater, between the dura mater and the cortex of the brain or in brain tissues by means of microscopes or high-definition endoscopes, the operation is time-consuming, the requirements on the physical strength and the skill of the doctors are strict, and the requirements on the accuracy and the reliability of surgical instruments are also high. For example, a common clinical meningioma operation, a tumor operation closely adhered to dura mater, requires a doctor to pinch the dura mater around a tumor at various angles under a microscope by means of meningeal forceps after craniotomy exposure is finished, and gradually resects the tumor by using tools such as bipolar electrocoagulation and microscissors on the premise of avoiding damaging brain tissues as much as possible, wherein the whole operation process has very high requirements on the pinching angle, direction, strength and stability of the dura mater with the tumor. Therefore, neurosurgery also has very high requirements for instruments such as dural forceps.

There is a need for improvement in the dural forceps currently in use.

Currently, dural forceps commonly used by neurosurgeons are straight-leg forceps without curvature. The meninges forceps generally comprise two straight line forceps legs which are arranged oppositely and connected together, the front ends of the two forceps legs are usually provided with exposed sharp forceps heads which can be matched with each other, and a doctor holds the two forceps legs by fingers to fix the dura mater. In the operation process, the front end of the meningeal forceps forms an angle with the surface of the brain, and the clinical requirement of long-time fine operation in narrow areas with the depth less than 1cm, such as the posterior fossa, cannot be met. In addition, the sharp forceps head with the exposed front end can easily damage the fragile cerebral cortex, and serious consequences such as hemiplegia, hemorrhage and the like caused by the injury are caused. Especially, when the existing patient with the history of craniotomy, intracranial infection or hemorrhage or the condition that the focus is close to the end of the vein Dou Dengji, the adhesion between the dura mater and the cerebral cortex is tight, the existing dura mater forceps cannot provide convenient operation performance for doctors, and the doctors are easy to increase the risk of cerebral cortex damage while prolonging the operation time because the angle, stability or continuity of the dura mater are not good enough.

There are also medical forceps of many different specifications and curvatures suitable for non-neurosurgical operation in the market at present. Through data retrieval and material object use analysis, the clamping planes of the medical forceps are all arranged to be horizontal to the plane where the curvature is located, when the forceps handle penetrates into the brain from the outside of the brain to the inside of the brain, and the forceps head is parallel to the surface of the brain, the clamping direction of the forceps head can only do horizontal movement, and the parallel dura mater cannot be clamped; when the forceps head moves vertically in the clamping direction, the forceps handle is parallel to the surface of the skull, and the deep operation cannot be performed. Therefore, the clamping direction of the forceps head is not suitable for clamping the dura mater in any holding mode, and the requirement of penetrating into a narrow gap to clamp the dura mater cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a neurosurgery is with dura mater tweezers, help neurosurgery doctor realize in the art to the precision of dura mater, convenient, continuously carry hold between the fingers to shorten the operating time, alleviate doctor fatigue, reduce iatrogenic cortex damage.

The utility model discloses a following technical scheme realizes: a dural forceps for neurosurgery comprising:

the connecting part is connected with the first clamping part and the second clamping part;

the bending part of the first clamping part and the bending part of the second clamping part are formed by bending the distal ends of the first clamping part and the second clamping part in the same direction in a horizontal plane;

the bending part of the first clamping part and the bending part and the connecting part of the second clamping part are positioned in the same plane;

under the normal state, the first clamping part and the second clamping part are kept separated under the elastic action;

in a use state, the distal ends of the first clamping part and the second clamping part clamp the dura mater under the action of pressing force and carry out lifting and pinching fixation on the dura mater from the intracranial part to the outside.

Further, the bending angle of the bending part ranges from 90 to 160 degrees. The bend preferably has a bend angle in the range of 120 to 140 degrees, for example 130 degrees.

Furthermore, the far end of the first clamping part is provided with teeth, the far end of the second clamping part is provided with tooth sockets, when the clamping device is in a use state, the first clamping part provided with the teeth is located between the dura mater and the skull, and the teeth and the tooth sockets are mutually meshed and bitten to fully fix the dura mater. Preferably, the surface of the tooth socket is smooth, and the thickness of the tooth socket does not exceed the thickness of the second clamping part. The safety of complex and delicate operations on the brain surface is greatly enhanced by the protective design of the smooth surface of the gullet.

Further, the distal end of first clamping part and the distal end of second clamping part are the blunt head, avoid haring fragile cortex. The blunt tip is preferably elliptical.

Further, be equipped with the stopper on the first clamping part, be equipped with the spacing groove on the second clamping part, stopper and spacing groove are nibbled mutually and are bitten when the user state, avoid the off normal and the dynamics of kneading too big.

Furthermore, the outer side of the handheld part of the first clamping part and/or the outer side of the handheld part of the second clamping part are/is provided with an anti-skid device. The anti-skid device can be anti-skid lines, anti-skid projections or other components with anti-skid function. The anti-slip lines are directly arranged on the outer sides of the first clamping part and/or the second clamping part. The antiskid lugs are arranged on the outer sides of the first clamping part and the second clamping part directly. The anti-slip component is a component which is fixed or detachable on the outer sides of the first clamping part and the second clamping part and has an anti-slip function.

Further, the dura forceps of the present invention is made of alloy or carbon fiber. The material of alloy or carbon fibre can ensure that first clamping part and second clamping part keep certain elasticity, under normal condition, makes first clamping part and second clamping part keep separately under the elastic action, is convenient for wash simultaneously again, and is safe durable.

Furthermore, the dura forceps of the present invention is made of medical stainless steel, which is cheap and durable, and can save the manufacturing cost and facilitate the cleaning and disinfection.

Compared with the prior art, the utility model discloses possess following beneficial effect at least:

the utility model provides a dura forceps for neurosurgery. This tweezers are convenient for go deep into the narrow and small lacuna between skull medial surface to the brain surface and carry the accurate operation of holding between the fingers fixed dura mater, effectively ensure to holding between the fingers angle, dynamics and operating stability of holding between the fingers of dura mater, make things convenient for the long-time accurate operation of neurosurgery under the microscope. The forceps are beneficial to shortening the operation time, relieving the fatigue of doctors and reducing the iatrogenic damage to the cerebral cortex.

Drawings

Fig. 1 is a schematic structural view of the dura forceps for neurosurgery of the present invention. Under the normal state, the first clamping part and the second clamping part are kept separated under the elastic action;

fig. 2 is a schematic structural view of the dura forceps for neurosurgery. In the using state, the far end of the first clamping part and the far end of the second clamping part clamp the dura mater under the action of pressing force;

FIG. 3 is a schematic structural view of the dura mater of the operation region required by the dura mater forceps for neurosurgery of the present invention;

fig. 4 is a schematic structural view of the dura forceps for neurosurgery of the present invention;

FIG. 5 is a schematic structural view of the teeth of the first holding portion and the tooth grooves of the second holding portion of the dura mater forceps for neurosurgery;

fig. 6 is a schematic view of the structure of the distal end of the second holding portion of the dura forceps for neurosurgery of the present invention, and the square frame is the opening of the tooth socket when viewed from the inside to the outside;

fig. 7 is a schematic structural view of the limiting block on the first clamping part and the limiting groove on the second clamping part of the dura mater forceps for neurosurgery of the present invention;

fig. 8 is a schematic structural view of the anti-slip pattern on the first holding portion and the second holding portion of the dura forceps for neurosurgery of the present invention.

Description of reference numerals: 1-a connecting part; 2-a first clamping part; 3-a second clamping part; 21-the curvature of the first clamping section; 22-the distal end of the first clamping portion; 23-teeth of the first grip; 24-a stop block of the first clamping portion; 31-the curvature of the second clamping section; 32-the distal end of the second clip portion; 33-gullets of the second clamping portion; 34-a limiting groove of the first clamping part; 321-a distal blunt end of the second clamping portion; 4-the skull; 5-dura mater; 6-pia mater; 7-a hand-held part; 8-anti-skid lines; 9-skin; 10-brain.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the present embodiment provides dural forceps for neurosurgery, including:

a connecting part 1, a first clamping part 2 and a second clamping part 3 connected with the connecting part 1;

the far end 22 of the first clamping part and the far end 32 of the second clamping part are bent in the same direction in the horizontal plane to form a bent part 21 of the first clamping part and a bent part 31 of the second clamping part;

the distal ends 22 and 32 of the first and second clamping portions, the curved portions 21 and 31 of the first and second clamping portions and the connecting portion 1 are all located in the same plane;

in a normal state, the first clamping part 1 and the second clamping part 2 are kept separated under the action of elasticity;

in the use state, the distal end 22 of the first clamping part and the distal end 32 of the second clamping part clamp the dura mater under the action of pressing force and carry out the lifting and fixing of the dura mater from the intracranial to the extracranial.

As shown in fig. 4 to 8, the present embodiment provides a dural forceps for neurosurgery, further comprising a first holding portion 1 and a second holding portion 2, wherein the bending degree of the first holding portion 1 and the second holding portion 2 is 130 °. The distal end 22 of the first clamping portion is provided with teeth 23 and the distal end 32 of the second clamping portion is provided with splines 33. The first clamping part 1 is provided with a limiting block 24, and the second clamping part is provided with a limiting groove 34. The holding region 7 of the first holding part 2 and/or the second holding part 3 is provided with an anti-slip device 24 and/or 34.

In the present embodiment, as shown in fig. 5, the teeth 23 on the distal end 22 of the first holding portion are in the shape of an inverted hook, so as to prevent the teeth 23 and the tooth sockets 33 from deviating during pinching, and to sufficiently secure the dura mater during pinching, thereby preventing the dura mater from slipping when the pinching force is too large.

As shown in fig. 5 and 6, in the present embodiment, the surface of the tooth slot 33 is smooth and does not exceed the thickness of the second clamping portion 3, and the distal end 32 of the second clamping portion 3 is an elliptical blunt end 321.

As shown in fig. 7, in this embodiment, under normal conditions, the limiting block 23 of the first clamping portion 2 and the limiting groove 33 of the second clamping portion 3 contact each other, so as to prevent the first clamping portion 2 and the second clamping portion 3 from deviating from each other, and avoid an excessive pinching force, so that the teeth 23 on the distal end 22 of the first clamping portion 2 and the tooth grooves 33 on the distal end 33 of the second clamping portion 3 are separated from each other.

As shown in fig. 8, in the present embodiment, the first clamping portion 2 and/or the second clamping portion 3 are/is provided with anti-slip threads.

The specific implementation process of this embodiment is as follows: under normal conditions, the first clamping part and the second clamping part of the meninges tweezers of the utility model keep separating under the elastic action. In the craniotomy, a doctor places fingers on the anti-slip device, increases the friction force between the fingers and the meninges forceps through the anti-slip device, inserts the first clamping part between the dura mater and the skull and inserts the second clamping part between the dura mater and the pia mater along the curvature of the skull by utilizing the curvature of the meninges forceps, presses the first clamping part and the second clamping part, enables teeth at the far end of the first clamping part and tooth grooves at the far end of the second clamping part to pinch and bite the dura mater, and accordingly the dura mater is lifted and fixed from the inside to the outside of the skull, so that long-time craniotomy operation can be conducted.

The utility model provides a dura mater tweezers for neurosurgery has solved current tweezers and can not carry out the technical problem of the meticulous operation of complicated surgery operation because carry the defect of holding between the fingers angle, meshing stability and to cortex protectiveness etc. and hold between the fingers, provides a special dura mater tweezers for neurosurgery, and help neurosurgery doctor realizes in the art to the precision of dura mater, convenient, continuously carry and hold between the fingers to shorten operating time, alleviate doctor fatigue, reduce iatrogenic source nature cortex damage.

What has been described above is only some embodiments of the present invention, and is not intended to limit the spirit and scope of the present invention. For those skilled in the art, without departing from the spirit of the present invention, several modifications and improvements can be made, which are within the scope of the present invention.

Claims (10)

1. Dural forceps for neurosurgery, comprising:

the connecting part is connected with the first clamping part and the second clamping part;

the bent part of the first clamping part and the bent part of the second clamping part are formed by bending the distal ends of the first clamping part and the second clamping part in the same direction in a horizontal plane;

the bent part of the first clamping part and the bent part of the second clamping part and the connecting part are positioned in the same plane;

under the normal state, the first clamping part and the second clamping part are kept separated under the elastic action;

in a use state, the distal end of the first clamping part and the distal end of the second clamping part clamp the dura mater under the action of pressing force and carry out lifting and fixing on the dura mater from the inside to the outside of the cranium.

2. The forceps of claim 1, wherein the bend of the first grasping portion and the bend of the second grasping portion have a bend angle in a range of 90 to 160 degrees.

3. The forceps of claim 2, wherein the bend of the first grasping portion and the bend of the second grasping portion have a bend angle in a range of 120 to 140 degrees.

4. The forceps of claim 1, wherein the first holding portion has teeth at a distal end thereof, and the second holding portion has gullets at a distal end thereof, and wherein in use, the first holding portion having the teeth is positioned between the dura mater and the skull, and the teeth and the gullets engage with each other to sufficiently hold the dura mater.

5. The forceps of claim 4, wherein the gullets have smooth surfaces and the gullets have a thickness that does not exceed the thickness of the second gripping portion.

6. The forceps of claim 1, wherein the distal end of the first holding portion and the distal end of the second holding portion are blunt.

7. The forceps of claim 6, wherein the blunt tip is elliptical.

8. The tweezers of claim 1, wherein the first holding portion is provided with a limiting block, the second holding portion is provided with a limiting groove, and the limiting block and the limiting groove are engaged with each other in a use state to avoid deviation and excessive kneading force.

9. The forceps according to claim 1, wherein the outer side of the holding portion of the first holding portion and/or the second holding portion is provided with an anti-slip means.

10. The forceps of claim 1, wherein the forceps are made of alloy or carbon fiber or medical stainless steel.

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