CN113940734B - Visual brain tissue puncture retractor - Google Patents
Visual brain tissue puncture retractor Download PDFInfo
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- CN113940734B CN113940734B CN202111216486.9A CN202111216486A CN113940734B CN 113940734 B CN113940734 B CN 113940734B CN 202111216486 A CN202111216486 A CN 202111216486A CN 113940734 B CN113940734 B CN 113940734B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
- A61B2017/0225—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery flexible, e.g. fabrics, meshes, or membranes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
- A61B2017/3443—Cannulas with means for adjusting the length of a cannula
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/306—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using optical fibres
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Abstract
The invention discloses a visual brain tissue puncture retracting device, and belongs to the technical field of brain tissue retractors. The cylindrical expansion balloon is sleeved outside the integrated hard optical fiber, and a liquid injection pipe is arranged on the cylindrical expansion balloon and can expand after liquid injection; one end of the integrated hard optical fiber is connected with the imaging lens, and the other end of the integrated hard optical fiber is connected with the light source and the imaging system through the adapter; the hard working channel can be placed into a target part along the space between the outer wall of the cylindrical expansion balloon and brain tissue after the cylindrical expansion balloon is subjected to liquid injection expansion and is fixed by a hard working channel fixer; the hard working channel fixer is fixed on the skull. The invention can accurately place the hard working channel into the position to be operated, and the channel is stable in the whole operation process, thereby facilitating the operation; the whole device is simple and convenient to operate and does not depend on the experience and skill level of an operator; the whole device has small damage to brain tissues, and reduces the risk of iatrogenic injury and operation.
Description
Technical Field
The invention belongs to the technical field of brain tissue retractors, and relates to a visual brain tissue puncturing and retracting device.
Background
Brain tissue dilation retractors are surgical instruments commonly used in neurosurgical procedures. Because brain tissue lesions, such as hemorrhage, brain tumor, etc., are often located deep in brain tissue, an operation channel during an operation needs to pass through normal brain tissue to reach a lesion area; in addition, the operation of ventricular lesions requires the creation of fistulas in normal brain tissue and the creation of an operation channel in the brain tissue to perform operations such as surgical resection. The channel needs to be stable in the operation, so that the neuroendoscopy or the microscope can be used for carrying out the microsurgery operation, and the accuracy and the safety of the operation are ensured.
The existing brain tissue expansion retractors comprise the following components:
1) A brain tissue expansion retractor is marketed, which is expanded step by using expanders with different diameters from small to large, and a working channel with a corresponding diameter is arranged after the expanders are expanded to a required diameter. The dilator has the defects that the dilators with different diameters from small to large are used for gradual dilation, and brain tissues need to be punctured for many times, so that brain tissue damage is increased; on the other hand, the working channel has no fixator, is unstable in the operation process, needs to be supported by an assistant, and has the risk of artificially causing brain tissue damage due to the instability of the working channel; in addition, the length of the working channel is fixed, the length cannot be adjusted according to the depth of a lesion part, and when a neuroendoscope or a microscope is used for operation, the operation of a surgical instrument is hindered due to the overlong working channel.
2) The utility model provides a cerebral hemorrhage operation cerebral cortex fistulization sacculus expansion passageway can carry out the fistulization of cerebral cortex through the sacculus for cerebral hemorrhage operation, nevertheless is fusiformis after this sacculus is aerifyd, is not conform to the telescopic cylinder shape of operation of putting into, can cause extra brain tissue to damage when putting into the operation sleeve, and the expansion degree controllability of sacculus is poor. In addition, the balloon dilatation drainage tube main body can not display whether the puncture part at the front end reaches a target area in real time during puncture, and the puncture has certain blindness. On the other hand, the balloon is inflated by injecting air, which has compressibility, so that the balloon is not inflated linearly. In addition, the fixed handle arranged on the operation sleeve needs to be connected with a snake-shaped retraction device, and the snake-shaped retraction device is not equipped for every hospital; and the snake-shaped retractor is longer, so that the operation is interfered, and the fixing stability of the snake-shaped retractor is not good enough.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide a visual brain tissue puncturing and retracting device, which can precisely place a hard working channel into a target site to be operated, and the channel is stable in the whole operation process, thereby facilitating the operation; the whole device is simple and convenient to operate and does not depend on the experience and skill level of an operator; the whole device has less damage to brain tissues, and reduces the risk of operation.
The invention is realized by the following technical scheme:
the invention discloses a visual brain tissue puncture retractor device, which comprises an integrated hard optical fiber, a cylindrical expansion balloon, an imaging lens, a hard working channel fixer, a light source and an imaging system, wherein the imaging lens is arranged on the hard working channel;
the cylindrical expansion balloon is sleeved outside the integrated hard optical fiber, and a liquid injection pipe is arranged on the cylindrical expansion balloon and can expand after liquid injection; one end of the integrated hard optical fiber is connected with the imaging lens, and the other end of the integrated hard optical fiber is connected with the light source and the imaging system through the adapter; the hard working channel can be placed into a target part along the space between the outer wall of the cylindrical expansion balloon and brain tissue after the cylindrical expansion balloon is subjected to liquid injection expansion and is fixed by a hard working channel fixer; the hard working channel fixer is fixed on the skull.
Preferably, the integrated hard optical fiber comprises an imaging optical fiber and an illumination optical fiber which are coaxially arranged, the illumination optical fiber is sleeved outside the imaging optical fiber, and the imaging lens is connected to the end part of the imaging optical fiber.
Preferably, the ends of the integral rigid optical fibers are hemispherical.
Preferably, the hard working channel is made of transparent materials, the length mark is arranged on the outer wall of the hard working channel, and the hard working channel is provided with a plurality of circles of easily broken point broken lines.
Preferably, the outer surfaces of the cylindrical dilatation balloon and the hard working channel are provided with a hydrophilic super-lubricious coating.
Preferably, the length mark is arranged on the outer wall of the cylindrical expansion balloon, and a framework for limiting deformation is arranged in the wall of the cylindrical expansion balloon.
Further preferably, the material of cylindricality expansion sacculus is medical silica gel, the material of skeleton is medical dacron.
Preferably, the stereoplasm working channel fixer includes the centrum, the tight cylinder chuck of hand and a plurality of stationary vane, and the tight cylinder chuck of hand passes through spherical sliding bearing and is connected with the centrum, is equipped with the locking screw that is used for locking spherical sliding bearing on the centrum, and the tight cylinder chuck of hand can fix stereoplasm working channel, and a plurality of stationary vanes are established in the circumference of centrum, are equipped with the fixed orifices on the stationary vane.
Further preferably, the fixed wing is provided with a plurality of easy-breaking point broken lines, the fixed wing is divided into a plurality of sections by the plurality of easy-breaking point broken lines, and each section is provided with a fixing hole.
Preferably, the integrated hard optical fiber is connected with the light source and the imaging system through an adapter, the integrated hard optical fiber, the cylindrical expansion balloon, the imaging lens, the hard working channel fixer and the adapter are subjected to sterile treatment, and sterile protective sleeves are sleeved outside the light source and the imaging system.
Compared with the prior art, the invention has the following beneficial technical effects:
the visual brain tissue puncture retractor device disclosed by the invention provides visualization of the whole puncture operation process through the integrated hard optical fiber and the imaging lens at the end part, can accurately puncture the integrated hard optical fiber and the cylindrical expansion balloon to reach a target part, then the cylindrical expansion balloon is filled with liquid for expansion, and a brain tissue channel is formed on the basis of minimum brain damage; then the hard working channel is arranged into a target position between the outer wall of the cylindrical dilatation balloon and the brain tissue, and the hard working channel can be fixed on the skull by using the hard working channel fixer, so that the position stability of the hard working channel in the operation process is ensured, and unnecessary brain tissue damage caused by the displacement of the hard working channel in the operation is avoided. When the operation is finished, the integrated hard optical fiber and the cylindrical expansion balloon are placed in the cylindrical expansion balloon along the hard working channel again, the liquid is injected into the cylindrical expansion balloon and expanded to a set diameter, the hard working channel fixer and the hard working channel are taken out, then the liquid in the cylindrical expansion balloon is pumped out, the cylindrical expansion balloon retracts, and the integrated hard optical fiber and the cylindrical expansion balloon are taken out, so that the brain tissue cutting effect caused by the overlarge diameter difference between the brain tissue soft channel and the hard working channel due to the retraction of the brain tissue when the hard working channel is directly taken out is avoided, and the brain tissue damage is further reduced. The invention can accurately place the hard working channel into the position needing operation, and the channel is stable in the whole operation process, thereby being convenient for operation; the whole device is simple and convenient to operate and does not depend on the experience and skill level of an operator; the whole device has less damage to brain tissues, and reduces the risk of operation.
Furthermore, the illumination optical fiber of the integrated hard optical fiber is sleeved outside the imaging optical fiber, the illumination optical fiber provides a light source from 360 degrees around the imaging lens, visibility is good, and convenience in operation is improved.
Furthermore, the end part of the integrated hard optical fiber is hemispherical, so that certain puncture capacity is realized in the puncture process, and meanwhile, the damage of a sharp tip to a blood vessel in the puncture process is avoided.
Furthermore, the hard working channel is made of transparent materials, the length mark is arranged on the outer wall of the hard working channel, the hard working channel is provided with a plurality of circles of easily-broken point broken lines, the local pipe at the easily-broken point broken lines is thinner, the pipe can be broken as required in the operation, unnecessary parts are removed, the blocking of the overlong hard working channel to surgical instruments is reduced, and the operation in the operation is facilitated.
Furthermore, the outer surfaces of the cylindrical expansion saccule and the hard working channel are provided with hydrophilic super-smooth coatings, so that the friction force with brain tissue can be greatly reduced when the cylindrical expansion saccule and the hard working channel are in contact with the brain tissue, and the damage to the brain tissue is further reduced.
Further, the length mark is arranged on the outer wall of the cylindrical expansion balloon, so that an operator can conveniently master the puncture depth; the wall of the cylindrical expansion saccule is internally provided with a skeleton for limiting deformation, so that the cylindrical expansion saccule does not expand any more after the injected liquid reaches a cylinder with a set diameter, and brain tissue is prevented from being damaged.
Furthermore, the hand-tightened cylindrical chuck of the hard working channel fixer can fix the hard working channel fixer, and the operation is simple and convenient; the spherical sliding bearing can be placed into the hard working channel, the angle of the hard channel can be adjusted randomly according to needs, and the angle of the hard channel is stable after the spherical sliding bearing is locked by using a bearing locking screw; in the operation, if the angle of the hard working channel needs to be adjusted, the bearing locking screw on the central body is unscrewed, the spherical sliding bearing is rotated so as to adjust the hard working channel to the required angle, the bearing locking screw is screwed, the spherical sliding bearing is locked so as to fix the angle of the hard working channel, and the angle of the hard working channel can be adjusted for multiple times as required in the operation; the fixed wing can be fixed with the skull through the screw, provides stable operation passageway.
Furthermore, the fixed wings are provided with a plurality of easily broken point broken lines, and fixed wings with proper length can be reserved according to the size of the exposed range on the skull.
Further, integration stereoplasm optic fibre, cylindricality expansion sacculus, imaging lens, stereoplasm working channel, the stereoplasm working channel fixer, the adapter all is handled through aseptic, integration stereoplasm optic fibre passes through the adapter and is connected with non-aseptic light source and imaging system, the outside cover of light source and imaging system has aseptic protective sheath, can keep apart aseptic operation part of one end and non-aseptic light source and imaging system, guarantee the aseptic ization of whole operation part spare part, avoid operation in-process bacterial contamination.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a rigid working channel retainer;
FIG. 3 is a schematic view of a rigid working channel retainer in cooperation with a rigid working channel;
fig. 4 is a schematic diagram showing the shape change of the cylindrical dilatation balloon before and after injection.
In the figure, 1 is an integrated hard optical fiber, 2 is a cylindrical expansion balloon, 3 is an imaging lens, 4 is a hard working channel, 5 is a hard working channel fixer, 5-1 is a central body, 5-2 is a hand-tight cylindrical chuck, 5-3 is a fixed wing, 5-4 is a fixed hole, 6 is an adapter, and 7 is a light source and an imaging system.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
referring to fig. 1, the visual brain tissue puncture retracting device of the invention comprises an integrated hard optical fiber 1, a cylindrical expansion balloon 2, an imaging lens 3, a hard working channel 4, a hard working channel fixer 5 and a light source and imaging system 7;
the cylindrical expansion balloon 2 is sleeved outside the integrated hard optical fiber 1, and a liquid injection pipe is arranged on the cylindrical expansion balloon 2 and can be expanded after liquid injection; one end of the integrated hard optical fiber 1 is connected with the imaging lens 3, and the other end of the integrated hard optical fiber is connected with the light source and imaging system 7 through the adapter 6; the hard working channel 4 can be placed into a target part between the outer wall of the cylindrical expansion balloon 2 and brain tissue after the cylindrical expansion balloon 2 is injected with liquid and expanded, and is fixed by a hard working channel fixer 5; the hard working channel fixator 5 is fixed on the skull.
In a preferred embodiment of the present invention, the integrated hard optical fiber 1 includes an imaging optical fiber and an illumination optical fiber coaxially disposed, the illumination optical fiber is sleeved outside the imaging optical fiber, and the imaging lens 3 is connected to an end of the imaging optical fiber. In other aspects, the imaging fiber and the illumination fiber may be arranged in parallel.
In a preferred embodiment of the invention the end of the integrated rigid optical fibre 1 is hemispherical.
In a preferred embodiment of the present invention, the hard working channel 4 is made of transparent material, the outer wall is provided with a length mark, and the hard working channel 4 is provided with a plurality of circles of breakable point broken lines.
In a preferred embodiment of the invention, the outer surfaces of the cylindrical dilatation balloon 2 and the rigid working channel 4 are provided with a hydrophilic ultra-smooth coating.
In a preferred embodiment of the invention, the outer wall of the cylindrical expansion balloon 2 is provided with a length mark, and the wall of the cylindrical expansion balloon 2 is provided with a framework for limiting deformation. Preferably, the material of the cylindrical dilatation balloon 2 is medical silica gel, and other medical grade materials with excellent elasticity and strength can also be adopted. The material of the framework adopts soft and non-extensible medical terylene, and also can adopt other medical high polymer materials with high strength, good deformability and non-extensibility.
In a preferred embodiment of the present invention, the hard working channel fixer 5 comprises a central body 5-1, a hand-tightened cylindrical collet 5-2 and a plurality of fixing wings 5-3, the hand-tightened cylindrical collet 5-2 is connected with the central body 5-1 through spherical sliding bearings, the central body 5-1 is provided with a locking screw for locking the spherical sliding bearings, the hand-tightened cylindrical collet 5-2 can fix the hard working channel 4, the plurality of fixing wings 5-3 are arranged on the circumference of the central body 5-1, and the fixing wings 5-3 are provided with fixing holes 5-4. After the hard working channel 4 is placed into the skull, the angle of the hard working channel 4 can be adjusted randomly according to needs, the angle of the hard working channel 4 is stable after the locking of a bearing locking screw, the hand-tight cylindrical chuck 5-2 is screwed, and the fixed wing 5-3 is fixed on the skull. In the operation process, the bearing locking screws are loosened as required, the hard working channel 4 is readjusted to the required angle, and the bearing locking screws are screwed again to lock the spherical sliding bearing so as to lock the working angle of the hard working channel 4. Preferably, the fixed wing 5-3 is provided with a plurality of easy-breaking point broken lines, the fixed wing 5-3 is divided into a plurality of sections by the plurality of easy-breaking point broken lines, and each section is provided with a fixing hole 5-4.
In a preferred embodiment of the invention, the integrated hard optical fiber 1 is connected with the light source and imaging system 7 through the adapter 6, the integrated hard optical fiber 1, the cylindrical expansion balloon 2, the imaging lens 3, the hard working channel 4, the hard working channel fixer 5 and the adapter 6 are subjected to sterile treatment, and the light source and imaging system 7 is externally sleeved with a sterile protective sleeve.
When the invention is used:
the visible brain tissue puncture dilator comprising the integrated hard optical fiber 1 and the cylindrical dilation balloon 2 (hereinafter, for convenience of description, a part formed by combining the integrated hard optical fiber 1 and the cylindrical dilation balloon 2 becomes the visible brain tissue puncture dilator) is connected with a light source and an imaging system 7 (a sterile protective sleeve is sleeved in an operation) by using a disposable sterile optical adapter 6, and whether the puncture front end reaches a target part (such as a hematoma cavity or a cerebral ventricle and the like) can be observed in real time in the puncture process. The end part of the integrated hard optical fiber 1 is in a hemispherical design, so that certain puncture capacity is realized in the puncture process, and meanwhile, the damage of a sharp tip to a blood vessel in the puncture process is avoided. After reaching the puncture target site, sterile normal saline is injected into the cylindrical expansion balloon 2 to expand the cylindrical expansion balloon 2 to a given diameter as shown in fig. 4, so that a brain tissue channel is formed on the basis of minimum brain injury through the expansion of the cylindrical expansion balloon 2. Further, a hard working channel 4 with the required length is cut out according to the puncture depth, a target position is placed along the outer wall of the cylindrical expansion saccule 2, sterile normal saline in the cylindrical expansion saccule 2 is pumped out to enable the cylindrical expansion saccule 2 to retract, and the visual brain tissue puncture dilator is taken out. The hard working channel 4 is fixed on the surface of the skull by the hard working channel fixer 5, so that the position stability of the hard working channel 4 in the operation process is ensured, and unnecessary brain tissue damage caused by the displacement of the hard working channel 4 in the operation is avoided. After the hard working channel 4 is placed in, the angle of the hard working channel 4 can be adjusted randomly according to needs, and the angle of the hard working channel 4 is stable after the hard working channel is locked by a bearing locking screw. In the operation process, the bearing locking screws are loosened as required, the hard working channel 4 is readjusted to the required angle, and the bearing locking screws are screwed again to lock the spherical sliding bearing so as to lock the working angle of the hard working channel 4. When the operation is finished, the visual brain tissue puncture dilator is placed and fixed along the hard working channel 4 again, sterile normal saline is injected into the cylindrical expansion sacculus 2 to expand the cylindrical expansion sacculus 2 to a set diameter, the hard working channel fixer 5 and the hard working channel 4 are taken out, then the sterile normal saline in the cylindrical expansion sacculus 2 is taken out, the cylindrical expansion sacculus 2 retracts, and the visual brain tissue puncture dilator is taken out, so that the brain tissue cutting effect caused by the overlarge diameter difference between the brain tissue soft channel and the hard working channel 4 due to the retraction of the brain tissue when the hard working channel 4 is directly taken out is avoided, and the brain tissue damage is further reduced.
The following is a specific example:
in this embodiment, the integrated hard optical fiber 1, the cylindrical expansion balloon 2, the imaging lens 3, the hard working channel 4 and the hard working channel fixer 5 are all packaged in a disposable sterilization mode. The imaging lens 3 adopts a 0-degree lens, the integrated hard optical fiber 1 adopts an imaging optical fiber and an illuminating optical fiber which are coaxially arranged from inside to outside, the imaging optical fiber and the illuminating optical fiber are equal in length and are longer than the cylindrical expansion balloon 2 on the outer side, and the end part of the cylindrical expansion balloon is in a hemispherical design.
The cylindrical dilatation balloon 2 has the following characteristics: (1) is made of nontoxic medical elastic silica gel; (2) the tail end is provided with a water injection hose with a three-way valve, and proper amount of sterile normal saline is injected to ensure that the three-way valve is closed after the cylindrical expansion saccule 2 is expanded to prevent the reverse flow of the saline, so that the pressure in the saccule is constant; (3) the cylindrical expansion saccule 2 is longitudinally provided with inextensible longitudinal fibers, so that the cylindrical expansion saccule 2 has the characteristic of being longitudinally inextensible after being injected with sterile normal saline, and the length of the cylindrical expansion saccule 2 is prevented from being larger than the puncture depth; (4) the cylindrical expansion saccule 2 is provided with transverse fibers with limited extension, and the cylindrical expansion saccule 2 can be transversely expanded after being injected with sterile normal saline, but does not have expansion capability any more after reaching a certain degree; (5) the outer wall of the cylindrical expansion saccule 2 is provided with longitudinal scales taking centimeters as units, the minimum scale is 0.5 centimeter, and the 0-degree lens level is 0 centimeter, so that the puncture depth can be known in the process of puncturing brain tissues. With the combination of characteristics (3) and (4), the cylindrical dilatation balloon 2 will form a cylinder with a fixed length and a set diameter after being injected with a set volume of sterile saline.
The integrated hard optical fiber 1 and the cylindrical expansion balloon 2 have a thin outer diameter when the cylindrical expansion balloon 2 is not injected with sterile normal saline, and the outer surface of the cylindrical expansion balloon is provided with the hydrophilic super-slip coating, so that the friction force with brain tissue can be greatly reduced when the cylindrical expansion balloon is in contact with the brain tissue, the puncture on a hematoma cavity or a cerebral ventricle of the brain tissue in an operation is completed, and the injury of the puncture process to the brain tissue is minimized. The 0-degree lens arranged at the front end, the imaging optical fiber and the lighting optical fiber connected with the 0-degree lens can observe the puncture depth and the puncture position in the puncture process, and the puncture depth can be confirmed by the longitudinal scales. After the puncture reaches the target position, sterile normal saline with a set volume is slowly injected by the water injection hose, the three-way valve is closed, and a cylinder channel with a fixed depth and a set diameter is slowly formed in the brain tissue with low damage due to the limitation of the longitudinal fibers and the transverse fibers.
The hard working channel 4 is a colorless transparent PVC cylindrical pipeline, the pipe wall is provided with longitudinal scales with centimeters as units, and the minimum scale is 0.5 centimeter. The outer wall of the channel is smooth, and the hydrophilic super-smooth coating is arranged on the outer surface of the channel, so that the friction force with brain tissue can be greatly reduced when the channel is contacted with the brain tissue; the inner wall is provided with a breaking line, the local pipe at the breaking line is thinner, and the pipe can be broken according to the requirement in the operation, so that unnecessary parts are removed, and the operation in the operation is facilitated. When the visual brain tissue puncture dilator is punctured to an intracerebral lesion (such as a bleeding focus) or a ventricle, sterile normal saline with a set volume is slowly injected by the water injection hose, the three-way valve is closed, and a cylinder channel with a fixed depth and a set diameter is slowly formed in the brain tissue with low injury. And determining the length of the needed hard working channel 4, and breaking the hard working channel along a breaking line to remove the unnecessary hard working channel 4 part. The hard working channel 4 with the required length is placed along the visual brain tissue puncture dilator, the placement depth is the same as the depth of the visual brain tissue puncture dilator, the normal saline is pumped out by the water injection hose, the visual brain tissue puncture dilator is taken out after the volume is retracted, and the hard working channel 4 is left at the set position in the brain.
The hard working channel fixer 5 is used for fixing the hard working channel 4 after the hard working channel 4 is reserved in a preset position in the brain, so that the stability of the position of the hard working channel 4 in the operation process is ensured, and the brain tissue damage is reduced. The hard working channel fixer 5 mainly comprises a central body 5-1, a four-claw fixing clamp connected with the central body 5-1 and a spiral fixing lock. The inner diameter of the four-jaw fixing clamp is cylindrical, and when the spiral fixing lock is rotated clockwise, the four-jaw fixing clamp is tightened, so that the hard working channel 4 can be stably clamped; when the screw immobiliser lock is rotated in a counter-clockwise direction, the four-jaw immobiliser clamp is released, releasing the rigid working channel 4. The bottom of the central body 5-1 is provided with 3 fixed wings 5-3 which are evenly distributed, the included angle between each fixed wing 5-3 is 120 degrees, and the fixed wings are used for fixing the hard working channel fixer 5 on the surface of the skull, thereby playing the role of fixing the hard working channel 4 and preventing the brain tissue damage caused by the large-scale movement of the hard working channel 4 in the operation process. The fixing wings 5-3 are made of medical stainless steel. Because the size of the operation incision is different, the length of the fixed wing 5-3 can be adjusted to adapt to different operation requirements, a breakable fixed wing adjusting line is arranged on the fixed wing 5-3, the fixed wing can be broken along the fixed wing adjusting line according to the required length in the operation, and redundant parts are discarded. The fixing wing 5-3 is provided with a fixing hole 5-4, and the fixing wing 5-3 is fixed on the skull by using a sterile fixing screw in the operation, so that the hard channel fixer 5 is fixed, the hard working channel 4 is further fixed, and the displacement of the hard working channel in the operation process is avoided. The hand-tight cylindrical chuck is connected with the central body through a spherical sliding bearing, and a locking screw for locking the spherical sliding bearing is arranged on the central body. After the hard working channel 4 is placed in the groove, the angle of the hard working channel 4 can be adjusted randomly according to needs, and the angle of the hard working channel 4 is stable after the hard working channel is locked by a bearing locking screw. In the operation process, the bearing locking screws are loosened as required, the hard working channel 4 is readjusted to the required angle, and the bearing locking screws are screwed again to lock the spherical sliding bearing so as to lock the working angle of the hard working channel 4.
The front end of the optical adapter 6 is provided with a first adapter lock catch which is connected with an optical imaging interface (tail ends of an imaging optical fiber and an illuminating optical fiber) of the visual brain tissue puncture dilator; the tail end is provided with a second adapter lock catch which is connected with an imaging interface of the light source and imaging system 7 (the part is non-sterile, and a sterile protective sleeve is required in the operation). The middle main body part is composed of adapter imaging optical fibers which are arranged in concentric circles and located on the inner side and adapter cold light source optical fibers located on the outer side.
It should be noted that the above description is only one embodiment of the present invention, and all equivalent changes of the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (9)
1. A visual brain tissue puncture retractor device is characterized by comprising an integrated hard optical fiber (1), a cylindrical expansion balloon (2), an imaging lens (3), a hard working channel (4), a hard working channel fixer (5) and a light source and imaging system (7);
the cylindrical expansion balloon (2) is sleeved outside the integrated hard optical fiber (1), and a liquid injection pipe is arranged on the cylindrical expansion balloon (2) and can be expanded after liquid injection; one end of the integrated hard optical fiber (1) is connected with the imaging lens (3), and the other end of the integrated hard optical fiber is connected with the light source and the imaging system (7) through the adapter (6); the hard working channel (4) can be sleeved on the outer wall of the cylindrical expansion balloon (2) after liquid injection expansion and is fixed by a hard working channel fixer (5);
the hard working channel fixer (5) comprises a central body (5-1), a hand-tight cylindrical chuck (5-2) and a plurality of fixing wings (5-3), wherein the hand-tight cylindrical chuck (5-2) is connected with the central body (5-1) through a spherical sliding bearing, a locking screw for locking the spherical sliding bearing is arranged on the central body (5-1), the hand-tight cylindrical chuck (5-2) can fix a hard working channel (4), the fixing wings (5-3) are arranged in the circumferential direction of the central body (5-1), and fixing holes (5-4) are formed in the fixing wings (5-3).
2. The visual brain tissue puncture retracting device according to claim 1, wherein the integrated hard optical fiber (1) comprises an imaging optical fiber and an illuminating optical fiber which are coaxially arranged, the illuminating optical fiber is sleeved outside the imaging optical fiber, and the imaging lens (3) is connected to the end part of the imaging optical fiber.
3. Visual brain tissue puncture retractor device according to claim 1, characterized in that the end of the integrated hard optical fiber (1) is hemispherical.
4. The visual brain tissue puncture retractor device according to claim 1, wherein the hard working channel (4) is made of transparent material, the outer wall is provided with length marks, and the hard working channel (4) is provided with a plurality of circles of breakable point broken lines.
5. Visual brain tissue puncture retraction device according to claim 1, characterized in that the outer surface of the cylindrical dilatation balloon (2) and the hard working channel (4) are provided with a hydrophilic ultra-smooth coating.
6. Visual brain tissue puncture retractor device according to claim 1, characterized in that the outer wall of the cylindrical expansion balloon (2) is provided with length indicators, and the wall of the cylindrical expansion balloon (2) is provided with a skeleton for limiting deformation.
7. A visual brain tissue puncture retractor device according to claim 6 wherein the cylindrical expansion balloon (2) is made of medical silica gel and the skeleton is made of medical terylene.
8. The visual brain tissue puncture retracting device according to claim 1, wherein the fixed wing (5-3) is provided with a plurality of easy-breaking point broken lines which divide the fixed wing (5-3) into a plurality of sections, and each section is provided with a fixed hole (5-4).
9. The visual brain tissue puncture retracting device according to claim 1, wherein the integrated hard optical fiber (1) is connected with the light source and the imaging system (7) through an adapter (6), the integrated hard optical fiber (1), the cylindrical expanding balloon (2), the imaging lens (3), the hard working channel (4), the hard working channel fixer (5) and the adapter (6) are subjected to aseptic treatment, and a sterile protective sleeve is sleeved outside the light source and the imaging system (7).
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| CN108175453A (en) * | 2018-01-31 | 2018-06-19 | 袁忠波 | A kind of soft channel of nerve endoscope that skull fixed arm is adjusted with retractable scalp |
| JP2019146930A (en) * | 2018-02-28 | 2019-09-05 | 富士システムズ株式会社 | Dilator device for cerebral ventricle puncture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9216015B2 (en) * | 2004-10-28 | 2015-12-22 | Vycor Medical, Inc. | Apparatus and methods for performing brain surgery |
| CN112790836A (en) * | 2019-11-14 | 2021-05-14 | 深圳市擎源医疗器械有限公司 | Balloon channel device and operation channel building method |
| CN213758478U (en) * | 2020-10-27 | 2021-07-23 | 溧阳市人民医院 | Disposable visual brain puncture expanding unit |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175453A (en) * | 2018-01-31 | 2018-06-19 | 袁忠波 | A kind of soft channel of nerve endoscope that skull fixed arm is adjusted with retractable scalp |
| JP2019146930A (en) * | 2018-02-28 | 2019-09-05 | 富士システムズ株式会社 | Dilator device for cerebral ventricle puncture |
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