CN217219857U

CN217219857U - Cerebral cortex fistulization sacculus expansion passageway

Info

Publication number: CN217219857U
Application number: CN202220695750.5U
Authority: CN
Inventors: 周建
Original assignee: First Affiliated Hospital Of Hainan Medical University
Current assignee: First Affiliated Hospital Of Hainan Medical University
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-08-19
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses a cerebral cortex fistulization sacculus expansion channel, which comprises a puncture catheter, a sacculus and an operation sleeve, wherein the sacculus is arranged outside the puncture catheter, two ends of the operation sleeve are opened and are provided with fixed handles, the sacculus is connected with an air pipe, the air pipe is provided with a connector connected with an air needle cylinder, the side wall of the connector is provided with a tapered hole, a spring is arranged in the connector, and the spring is connected with a conical plug which is used for covering the tapered hole from the outer cover of the connector; after the air syringe inflates the balloon, the balloon expands to form an ostomy channel in brain tissue, and the operation sleeve is used for being placed into the ostomy channel. The utility model provides a brain cortex fistulization sacculus expansion passageway extrudees sacculus release pressure gradually when putting into the operation sleeve, and the sacculus reduces the back operation sleeve and occupies this region thereupon to solve the problem that the operation sleeve is difficult to put into and easily injures brain tissue.

Description

Cerebral cortex fistulization sacculus expansion passageway

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a cerebral cortex fistulization sacculus expansion passageway.

Background

The deep portion of brain cortex, basal ganglia district, thalamus, ventricles of brain etc. and these pathological changes have certain distance with the brain cortex, and the operation is gone into the way and need carry out the cortical fistulization to normal brain tissue, and prior art utilizes and to inflate the sacculus and expand out the fistulization passageway in brain tissue, puts into the fistulization passageway with the operation sleeve after releasing the pressure of sacculus again after that. However, after the pressure of the balloon is released, the balloon is shrunk, and the fistulization channel is reset under the condition that the expanded brain tissue loses the supporting force, so that the fistulization channel is shrunk again, the brain tissue needs to be expanded again by using the operation sleeve, the operation sleeve is difficult to place, and the brain tissue is easy to damage.

Disclosure of Invention

To the above-mentioned prior art, the utility model provides a cerebral cortex fistulization sacculus expansion passageway extrudees sacculus release pressure gradually when putting into the operation sleeve, and the sacculus contracts the back operation sleeve and occupies this region thereupon to solve the problem that the operation sleeve is difficult to put into and easily harms brain tissue.

The technical scheme of the invention is realized as follows:

a cerebral cortex fistulization balloon dilatation channel comprises a puncture catheter, a balloon and an operation sleeve, wherein the balloon is arranged outside the puncture catheter, two ends of the operation sleeve are opened and are provided with fixing handles, the balloon is connected with an air pipe, the air pipe is provided with a connector connected with an air needle cylinder, the side wall of the connector is provided with a tapered hole, a spring is arranged in the connector, and the spring is connected with a tapered plug which is used for covering the tapered hole from the outer cover of the connector; after the air syringe inflates the balloon, the balloon expands to form an ostomy channel in brain tissue, and the operation sleeve is used for being placed into the ostomy channel.

Further, connector sliding connection has the movable circle, the inside wall of movable circle is equipped with the recess, the recess is embedded to have the spring leaf, spring leaf one end is connected with the movable circle, the spring leaf with the contact of toper stopper.

Furthermore, be equipped with the barrier film in the sacculus, the barrier film will the sacculus along the axial of puncture catheter is for two aerifys the chamber, the trachea penetrates aerify the chamber, just the trachea is equipped with the through-hole in every aerifys the intracavity, be located near trachea end the through-hole is equipped with elastic rubber pad, elastic rubber pad is equipped with the gas pocket that link up.

Furthermore, the air cylinder includes cylinder, piston rod and check valve, the end of giving vent to anger of cylinder is equipped with the check valve, be equipped with in the cylinder the piston, the piston is equipped with the guiding hole that runs through, the guiding hole with piston rod sliding connection, the piston rod is equipped with the sealing plug that covers the guiding hole.

Furthermore, one end of the guide hole, which faces the opening of the needle cylinder, is conical, and the sealing plug is conical.

Further, the operation sleeve includes cylindricality portion and toper portion, the little one end of toper portion diameter with cylindricality portion is connected, the internal diameter of cylindricality portion is 12mm, the big one end internal diameter of toper portion diameter is 20mm, fixed handle locates toper portion, fixed handle still is used for being connected with external fixing device.

Further, the edge of the surgical sleeve is in arc transition.

The beneficial effects of the utility model reside in that:

after the sacculus expands to certain volume, the pressure increase in the sacculus, overcome the elasticity of spring under the pressure effect this moment, push away the taper plug and make the bell mouth open, the air in the connector is discharged from the bell mouth, avoids the too big ruptured problem of emergence of sacculus pressure, also prevents that the fistulization passageway that the sacculus struts is too big. In the process of gradually placing the operation sleeve into the fistulization channel, the volume of the balloon is gradually reduced and is matched with the advancing speed of the operation sleeve, and the operation sleeve occupies the area after the balloon is reduced, so that the problem that the operation sleeve is difficult to place due to the fact that the brain tissue is reset to occupy the space is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is a schematic structural view of a dilatation channel of a cerebral cortical ostomy balloon of the present invention;

fig. 2 is a schematic cross-sectional view of the connector of the present invention;

fig. 3 is a schematic cross-sectional view of a balloon according to embodiment 2 of the present invention;

FIG. 4 is a schematic sectional view of an air cylinder according to embodiment 3 of the present invention;

in the figure, 1 puncture catheter, 2 saccule, 3 operation sleeve, 4 fixed handle, 5 trachea, 6 connector, 7 air syringe, 8 taper hole, 9 spring, 10 taper plug, 11 movable ring, 12 groove, 13 spring leaf, 14 isolating membrane, 15 inflation cavity, 16 through hole, 17 elastic rubber pad, 18 air hole, 19 syringe, 20 piston, 21 piston rod, 22 one-way valve, 23 guide hole, 24 sealing plug, 25 column part and 26 taper part.

Detailed Description

In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.

Example 1

Referring to fig. 1-2, a cerebral cortical ostomy balloon dilatation channel comprises a puncture catheter 1, a balloon 2 and an operation sleeve 3, wherein the balloon 2 is arranged outside the puncture catheter 1, two ends of the operation sleeve 3 are opened and provided with fixing handles 4, the balloon 2 is connected with an air tube 5, the air tube 5 is provided with a connector 6 connected with an air syringe 7, the side wall of the connector 6 is provided with a tapered hole 8, a spring 9 is arranged in the connector 6, and the spring 9 is connected with a tapered plug 10 covering the tapered hole 8 from the connector 6; after the air syringe 7 inflates the balloon 2, the balloon 2 expands to form a fistulization channel in brain tissue, and the operation sleeve 3 is used for being placed in the fistulization channel.

The utility model discloses a 1 outside of puncture catheter is equipped with sacculus 2, sends into intracranial operation passageway position after passing sacculus 2 from operation sleeve 3 through puncture catheter 1, is connected trachea 5's connector 6 and air cylinder 7 after that, promotes air cylinder 7's piston 20, carries the air to sacculus 2 in from trachea 5. After the sacculus 2 expands to a certain volume, the pressure in the sacculus 2 increases, at this moment, the elasticity of the spring 9 is overcome under the action of the pressure, the conical plug 10 is pushed open to open the conical hole 8, the air in the connector 6 is discharged from the conical hole 8, the problem that the sacculus 2 is broken due to overlarge pressure is avoided, and the fistulization channel expanded by the sacculus 2 can be prevented from being overlarge. After the saccule 2 is inflated, the brain tissue is expanded to form a fistulization passage with the required size. Then the fixed handle 4 of the operation sleeve 3 is held, the operation sleeve 3 is pushed to the balloon 2, the operation sleeve 3 extrudes the balloon 2 to discharge the gas, and the operation sleeve 3 is gradually placed in the fistulization channel. In the process of gradually placing the operation sleeve 3 into the fistulization channel, the volume of the balloon 2 is gradually reduced, so that the balloon is matched with the pushing speed of the operation sleeve 3, the operation sleeve 3 occupies the area after the balloon 2 is shrunk, and the technical problems that the operation sleeve 3 is difficult to place and the brain tissue is easily damaged due to the fact that the brain tissue occupies the space due to resetting are avoided. The conical plug 10 can only move outwards and the conical bore 8 is opened when the conical plug 10 moves outwards. When the conical plug 10 moves inwards, the conical hole 8 is closed, the conical hole 8 and the conical plug 10 are mutually matched, and the contact area of the surfaces of the conical hole 8 and the conical plug 10 is increased, so that the sealing effect is improved, and the possibility of gas leakage is reduced. The spring 9 has a certain elastic force, so that the conical plug 10 can cover the conical hole 8 under the action of the elastic force.

It can be understood that, in some preferred schemes, the utility model can adopt the saccule 2 with large elastic modulus, so that the elasticity of the saccule 2 to be overcome when the saccule is expanded is far larger than the brain tissue resistance to be overcome when the saccule is expanded. The balloon 2 which is in a three-dimensional elliptical shape after being expanded can also be adopted, so that the surgical sleeve 3 can be conveniently placed.

Preferably, 6 sliding connection of connector has movable circle 11, the inside wall of movable circle 11 is equipped with recess 12, recess 12 is embedded to have spring leaf 13, spring leaf 13 one end is connected with movable circle 11, spring leaf 13 with the contact of toper stopper 10. The movable ring 11 slides along the connector 6, and when the movable ring 11 slides to different positions, different parts of the spring piece 13 are in contact with the conical plug 10. One end of the spring piece 13 is connected with the movable ring 11, so that the spring pieces 13 at different parts have different elasticity to the conical plug 10, and the part closer to the connecting end has larger elasticity to the conical plug 10. When the conical plug 10 moves outwards, the action of the spring 9 and the spring piece 13 needs to be overcome, and the elastic force needed to be overcome by the conical plug 10 can be adjusted by adjusting the position of the movable ring 11, so that the pressure extreme value of the balloon 2 can be adjusted. It will be appreciated that in some preferred embodiments, only the spring plate 13 may be provided, and no spring 9 may be provided. The spring piece 13 is arranged in the groove 12 on the inner side wall of the movable ring 11, the contact surface of the movable ring 11 and the connector 6 is large, and a stable connection structure is easy to process. The pressure extreme value which can be reached in the sacculus 2 can be adjusted by adjusting the position of the movable ring 11, the maximum volume which can be reached after the sacculus 2 is expanded is controlled, and different operation requirements are met. The position of the movable ring 11 can also be adjusted when the pressure to be overcome for dilating the brain tissue is high, thereby using the needs of different patients. The position of the movable ring 11 can be adjusted after the saccule 2 is expanded to reach the maximum volume, so that the elasticity of the conical plug 10 is reduced, and the conical plug is conveniently placed into the sleeve.

Specifically, the surgical sleeve 3 comprises a cylindrical portion 25 and a conical portion 26, one end of the conical portion 26 with a small diameter is connected with the cylindrical portion 25, the inner diameter of the cylindrical portion 25 is 12mm, one end of the conical portion 26 with a large diameter is 20mm, and the fixing handle 4 is arranged on the conical portion 26. The opening of the tapered portion 26 has a large diameter to facilitate surgical manipulation at the opening. The cylindrical portion 25 forms a uniform channel after being placed in the brain tissue. The fixed handle 4 is connected with the conical part 26, so that the operation is convenient. The inner diameter of the cylindrical part 25 is 12mm, and the inner diameter of the larger end of the conical part 26 is 20mm, so that the requirement of the operation is met. After the operation sleeve 3 is placed into the fistulization channel, the external fixing device can be connected to the fixed handle 4, so that the operation sleeve 3 is convenient to fix.

Specifically, the edge of the surgical sleeve 3 is in arc transition. Avoiding the brain tissue from being damaged by the sharp part.

Example 2

Referring to fig. 3, the present embodiment is different from embodiment 1 in that a separation film 14 is disposed in the balloon 2, the separation film 14 separates the balloon 2 into two inflation cavities 15 along the axial direction of the puncture catheter 1, the air tube 5 penetrates into the inflation cavities 15, a through hole 16 is disposed in each inflation cavity 15 of the air tube 5, an elastic rubber pad 17 is disposed in the through hole 16 near the end of the air tube 5, and the elastic rubber pad 17 is provided with a through air hole 18. Alternatively, a sleeve-like elastic rubber pad 17 may be used to cover the air tube 5 with the air hole 18 aligned with the through hole 16. In a natural state, the diameter of the air hole 18 of the elastic rubber pad 17 is small or the elastic rubber pad 17 is in a closed state, and when the pressure in the air tube 5 increases, the air pressure on both sides of the elastic rubber pad 17 is different and the elastic rubber pad 17 is deformed, so that the elastic rubber pad 17 is bent in a direction in which the air pressure is small, and the elastic rubber pad 17 is stretched by being bent, thereby expanding the air hole 18 and promoting the air to pass through the air hole 18. Therefore, when the air tube 5 inflates the saccule 2, the air enters the inflation cavities 15 close to the head end of the air tube 5 in a large quantity, and enters the inflation cavities 15 close to the tail end of the air tube 5 in a small quantity, so that the saccule 2 expands firstly in the inflation cavity 15 close to the external brain tissue, the saccule 2 expands after being close to the internal brain tissue inflation cavity 15, and the saccule 2 forms a bullet head shape similar to the shape with one end having a large diameter and the other end having a small diameter, thereby facilitating the expansion of the brain tissue. When the operation sleeve 3 is placed, the position of the movable ring 11 is adjusted, so that the elastic force applied to the conical plug 10 is reduced, the operation sleeve 3 extrudes the inflation cavity 15 close to the external brain tissue, the inflation cavity 15 is firstly shrunk, and the other inflation cavity 15 keeps the original expansion state. Thereby orderly reducing the saccule 2 and preventing the operation sleeve 3 from not reaching the inside of the brain tissue after the saccule 2 is wholly reduced. When the surgical sleeve 3 is moved into the position of the other inflation lumen 15, the inflation lumen 15 is further reduced to facilitate the insertion of the surgical sleeve 3.

Example 3

Referring to fig. 4, the present embodiment is different from

embodiments

1 and 2 in that the air cylinder 7 includes a cylinder 19, a piston 20, a piston rod 21 and a check valve 22, the check valve 22 is disposed at the air outlet end of the cylinder 19, the piston 20 is disposed in the cylinder 19, the piston 20 is provided with a guide hole 23 extending therethrough, the guide hole 23 is slidably connected to the piston rod 21, and the piston rod 21 is provided with a sealing plug 24 covering the guide hole 23. When the piston rod 21 is pushed inward, the sealing plug 24 on the piston rod 21 covers the guide hole 23, and air cannot enter or exit from the guide hole 23. When the piston rod 21 is pulled outwards, the sealing plug 24 on the piston rod 21 is separated from the guide hole 23, and air can enter and exit from the guide hole 23. When filling air into the balloon 2, if the piston 20 has been pushed to the bottom but the inflation still does not reach the standard, the piston rod 21 is then pulled outward, at which time the guide hole 23 is opened and air enters the syringe 19 from the guide hole 23. Meanwhile, because the air outlet end of the needle cylinder 19 is provided with the one-way valve 22, the air in the balloon 2 cannot reversely enter the needle cylinder 19. Finally, when the piston rod 21 is pushed inwards, the sealing plug 24 on the piston rod 21 covers the guide hole 23, and when the piston rod 21 is pushed, air is pushed into the air bag. The utility model discloses can increase the quantity that can fill gas in to the gasbag under the limited condition of syringe 19 volumes. When the position of the movable ring 11 is adjusted, air can be supplemented through air vacuum under the condition that gas leakage is caused carelessly.

Specifically, the end of the guide hole 23 facing the opening of the needle cylinder 19 is tapered, and the sealing plug 24 is tapered. The contact area between the sealing plug 24 and the guide hole 23 is increased, and the sealing effect is improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cerebral cortical ostomy balloon dilatation channel is characterized by comprising a puncture catheter, a balloon and an operation sleeve, wherein the balloon is arranged outside the puncture catheter, two ends of the operation sleeve are provided with openings and are provided with fixed handles, the balloon is connected with an air pipe, the air pipe is provided with a connector connected with an air needle cylinder, the side wall of the connector is provided with a tapered hole, a spring is arranged in the connector, and the spring is connected with a conical plug which occupies the tapered hole from the outer cover of the connector; after the air syringe inflates the balloon, the balloon expands to form an ostomy channel in brain tissue, and the operation sleeve is used for being placed into the ostomy channel.

2. The dilatation channel of the balloon for the cortical ostomy according to claim 1, wherein the connector is slidably connected with a movable ring, the inner side wall of the movable ring is provided with a groove, a spring piece is embedded in the groove, one end of the spring piece is connected with the movable ring, and the spring piece is in contact with the conical plug.

3. The dilatation channel of the cerebral cortical ostomy sacculus of claim 1, wherein an isolation membrane is arranged in the sacculus, the isolation membrane separates the sacculus into two inflatable cavities along the axial direction of the puncture catheter, the trachea penetrates into the inflatable cavities, a through hole is arranged in each inflatable cavity of the trachea, an elastic rubber pad is arranged at the through hole close to the tail end of the trachea, and the elastic rubber pad is provided with a through air hole.

4. The dilatation channel of the balloon for the cortical fistula according to claim 1, wherein the air syringe comprises a syringe, a piston rod and a one-way valve, the one-way valve is arranged at the air outlet end of the syringe, the piston is arranged in the syringe, the piston is provided with a guide hole which penetrates through the piston, the guide hole is in sliding connection with the piston rod, and the piston rod is provided with a sealing plug which covers the guide hole.

5. The dilatation channel of a balloon for cortical ostomy of claim 4 wherein the end of the guiding hole facing the opening of the needle cylinder is tapered and the sealing plug is tapered.

6. The dilatation channel of the balloon for the cortical ostomy of claim 1, wherein the surgical sleeve comprises a cylindrical part and a conical part, the end with the small diameter of the conical part is connected with the cylindrical part, the inner diameter of the cylindrical part is 12mm, the end with the large diameter of the conical part is 20mm, the fixing handle is arranged on the conical part, and the fixing handle is further used for being connected with an external fixing device.

7. The exostomy balloon dilation channel of claim 6 wherein the edges of said surgical sleeve are arcuate in transition.