CN113069184B

CN113069184B - Skull and dura mater separation device

Info

Publication number: CN113069184B
Application number: CN202110336272.9A
Authority: CN
Inventors: 赵天智; 屈延; 王樑; 葛顺楠; 邬迎喜; 薛亚飞; 姜雪; 郑敏; 张韫泽; 王宝; 李志红; 祝刚; 胡焱; 薛峰; 封浪浪; 杨子舰; 杨伟; 吴翔; 白万胜; 吴阳
Original assignee: Air Force Medical University of PLA
Current assignee: Air Force Medical University of PLA
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-07-22
Anticipated expiration: 2041-03-29
Also published as: CN113069184A

Abstract

The invention discloses a skull and dura mater separation device which comprises an arc sheath and an inner core, wherein the inner core is movably connected inside the arc sheath, one end of the inner core is provided with a pointed end, one side of the outer surface of the inner core, which is close to the pointed end, is provided with a distraction bag, the other end of the inner core is fixedly connected with an injection head, one side of the pointed end is tilted upwards, and the angle is 15 degrees. This skull dura mater separator, when opening the skull and drilling, insert the device under the skull, on the dura mater, change the direction for being on a parallel with skull bone face direction through radian sheath, through promoting the inner core, make the dura mater separate from the skull, and then conveniently carry out separation work to the dura mater, at the inserted in-process, medical staff accessible inner core and the nick on radian sheath surface and evaluation piece know both male degree of depth, and the usable injection tube of staff inflates through the injection head, make to prop open the bag and take place the inflation, make it separate through its effort when strutting.

Description

Skull dura mater separator

Technical Field

The invention relates to the technical field of medical instruments, in particular to a skull and dura mater separating device.

Background

Periosteum is a strong connective tissue envelope that coats the surface of bone except for the joint. The bone tip and tendon are attached to the bone very densely, while the bone membrane at other parts is easily peeled off from the bone,

for patients with cerebral hemorrhage, especially patients with hypertensive cerebral hemorrhage, the patients are given a head ct examination after onset, and the quantity of the intracranial hematoma is found to be large at present, and generally need to be treated by adopting an operation mode.

The general procedure of craniotomy is to cut a U-shaped opening on the scalp of the affected part of a patient, separate the scalp, muscle and periosteum, drill a hole on the skull by using a craniocerebral power device, then saw the skull along the path from one bone hole to the adjacent bone hole by using a milling cutter, pry the skull flap by using a periosteum stripper to form a bone window, and finally separate the skull from the dura mater by using skull stripper. It is desirable that the dura mater not be damaged during this procedure, nor the dural sinus venosus.

For the elderly patients, because the dura mater and the skull are tightly adhered, the dura mater is likely to be damaged by using the common skull stripper, which causes postoperative cerebrospinal fluid leakage, because the bleeding amount is large, a large amount of bleeding can be generated around the incision, so that the operation process is extremely passive, meanwhile, the common stripper is not convenient to insert between the intima and the skull when in use, and because the dura mater and the skull are tightly adhered when encountering the elderly patients, the stripper is not convenient to push, thereby reducing the working efficiency.

Disclosure of Invention

The skull dura mater separation device has the advantages of being convenient for medical staff to separate the skull from the inner periosteum, improving the working efficiency, being high in safety and the like, and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a skull dura mater separator, includes radian sheath and inner core, inner core swing joint is in the inside of radian sheath, the one end of inner core is provided with sharp end, one side that the inner core surface is close to sharp end is provided with struts the bag, the other end fixedly connected with injection head of inner core.

Preferably, one side of the pointed end is tilted upwards, and the angle is 15 degrees.

Preferably, one side of the opening bag is connected with the injection head through a connecting hose, and the connecting hose is arranged inside the inner core.

Preferably, the inner cavity is formed in the injection head, and the bottom of the inner cavity is connected with the connecting pipe.

Preferably, the top of the injection head is movably connected with a sealing baffle, and the lower surface of the sealing baffle is fixedly connected with an extrusion spring.

Preferably, the outer surface of the inner core is provided with scores.

Preferably, one side of the surface of the radian sheath, which is close to the top, is provided with an anti-skid grain ring, and the outer surface of the anti-skid grain ring is provided with a bulge.

Preferably, the outer surface of the radian sheath is movably connected with an evaluation piece through a connecting sleeve, a limiting ring is arranged below the evaluation piece, and the left end point of the evaluation piece and the bottom end point of the radian sheath are positioned on the same vertical line.

Compared with the prior art, the invention has the following beneficial effects:

when the skull and dura mater separation device is used for drilling a skull, the device is inserted under the skull and on the dura mater, the direction is changed into the direction parallel to the bone surface of the skull through the radian sheath, the dura mater is separated from the skull through pushing the inner core, thereby facilitating the separation of the hard membrane, avoiding the damage of the hard membrane caused by the common separation method for workers, and simultaneously, during the insertion process, medical personnel can know the insertion depth of the inner core and the cambered sheath through the nicks on the surfaces of the inner core and the cambered sheath and the evaluation sheet and control the operation process in time, when the dura mater and the skull of the elderly patient are closely adhered, the worker can utilize the injection tube to inflate through the injection head, so that the opening sac is expanded, the dura mater and the skull are separated by the acting force when the dura mater and the skull are propped open, so that the condition that the dura mater and the skull are closely adhered and are inconvenient to separate is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a skull and dura mater separation device provided by the invention;

FIG. 2 is a schematic view of the structure of the sheath of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the core of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the inner cavity structure of the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 5 according to the present invention;

FIG. 7 is a schematic view of an injector head structure according to the present invention;

fig. 8 is a schematic view of the structure of the anti-slip grain ring of the invention.

In the figure: 1. a sheath of curvature; 2. an inner core; 3. a pointed end; 4. opening the sac; 5. an injection head; 6. a connecting hose; 7. an inner cavity; 8. sealing the baffle plate; 9. a compression spring; 10. an anti-skid grain ring; 11. scoring; 12. evaluating the sheet; 13. a limiting ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a skull dura mater separation device comprises an arc sheath 1 and an inner core 2, wherein the inner core 2 is movably connected inside the arc sheath 1, the arc sheath 1 is firstly inserted below the skull, then the inner core 2 is pushed to perform dura mater separation work, one end of the inner core 2 is provided with a pointed end 3, one side of the outer surface of the inner core 2, which is close to the pointed end 3, is provided with a distraction sac 4, the dura mater and the skull can be separated by an acting force generated when the distraction sac 4 is distracted, and the other end of the inner core 2 is fixedly connected with an injection head 5.

Preferably, one side of the tip head 3 is tilted upwards, the angle is 15 degrees, when the two sides are separated, the lower surface of the tip head 3 can be attached to the surface of the dura mater, and the tilted upwards side of the tip head can be attached to the dura mater adhered to the skull.

Preferably, prop one side of bag 4 and link to each other with injection head 5 through coupling hose 6, and coupling hose 6 sets up in the inside of inner core 2, and medical staff inserts the syringe in the inside of injection head 5, promotes the syringe and injects gas, and gas enters into to the inside of propping open bag 4 through coupling hose 6 for prop open the expansion of bag 4, separate the dura mater.

Preferably, an inner cavity 7 is formed in the injection head 5, the bottom of the inner cavity 7 is connected with the connecting pipe 6, and gas injected by the injector enters the inner cavity 7 and then enters the connecting hose 6.

Preferably, the top swing joint of injection head 5 has seal baffle 8, seal baffle 8's lower surface fixedly connected with extrusion spring 9, the one end of extrusion spring 9 is connected with the inner wall of interior cavity 7, when inflating, the head of syringe pushes seal baffle 8 open, extrusion spring 9 holds power simultaneously, when the syringe is extracted, extrusion spring 9 releases the energy storage, seal baffle 8 resets, when need not use, seal baffle 8 can play the effect of avoiding debris to get into injection head 5 inside, simultaneously, when needing to bleed, the usable foreign object of medical personnel can push it inwards open.

Preferably, the outer surface of the inner core 2 is provided with a notch 11, the inner core 2 moves inside the arc sheath 1, and the medical staff can know the advancing depth through the notch 11 on the surface.

Preferably, the anti-skidding line circle 10 is put to one side that radian sheath 1 surface is close to the top, the surface of anti-skidding line circle 10 is provided with the arch, when using, avoids taking place the smooth condition of hand.

Preferably, the outer surface of the radian sheath 1 is movably connected with an evaluation piece 12 through a connecting sleeve, the evaluation piece 12 can rotate and move up and down on the surface of the evaluation piece, a limiting ring 13 is arranged below the evaluation piece 12 to limit the moving position of the evaluation piece 12, the left end point of the evaluation piece 12 and the bottom end point of the radian sheath 1 are in the same vertical direction, the length of the radian sheath 1 which cannot be seen under the skull can be evaluated by using the evaluation piece 12, and the insertion degree of the radian sheath 1 can be further known.

The material of inner core 2 is similar with metal collapsible tube's material, can carry out crooked and design at will, and medical personnel need upwards maintain certain radian with its front end insert position before using, avoids it to stab to the dura mater down.

In conclusion, the skull and dura mater separation device works according to the following principle:

when the skull is drilled, the device is inserted under the skull and on the dura mater, the direction is changed into the direction parallel to the skull bone surface through the radian sheath 1, and the dura mater is separated from the skull by pushing the inner core 2.

When the opening bag 4 needs to be utilized, the head of the injector pushes the sealing baffle 8 away, meanwhile, the spring 9 is extruded to store force, the injector is pushed to inject gas, the gas enters the inside of the opening bag 4 through the connecting hose 6, the opening bag 4 is expanded, and the hard film can be separated by the opening acting force of the opening bag.

After the completion, the injector is pulled out, the compression spring 9 releases the energy storage, and the sealing baffle 8 is reset.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a skull dura mater separator, includes radian sheath and inner core, its characterized in that: inner core swing joint is in the inside of radian sheath, the one end of inner core is provided with sharp end, one side that the inner core surface is close to sharp end is provided with struts the bag, the other end fixedly connected with injection head of inner core, interior cavity has been seted up to the inside of injection head, the bottom of interior cavity links to each other with the connecting pipe, the top swing joint of injection head has seal baffle, seal baffle's lower fixed surface is connected with extrusion spring, the surface of radian sheath has the aassessment piece through adapter sleeve swing joint, the below of aassessment piece is provided with the spacing ring, aassessment piece left side extreme point is in same vertical line with radian sheath bottom extreme point.

2. The cranio-dural separation device of claim 1, further comprising: one side of the pointed end is upwards tilted, and the angle is 15 degrees.

3. The cranio-dural separation device of claim 1, further comprising: one side of the opening bag is connected with the injection head through a connecting hose, and the connecting hose is arranged in the inner core.

4. A cranio-dural separation device as claimed in claim 2, wherein: the outer surface of the inner core is provided with nicks.

5. The cranio-dural separation device of claim 1, further comprising: one side of the surface of the radian sheath, which is close to the top, is provided with an anti-skid grain ring, and the outer surface of the anti-skid grain ring is provided with a bulge.