CN114469206A - Accurate location brain leads out device - Google Patents
Accurate location brain leads out device Download PDFInfo
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- CN114469206A CN114469206A CN202210132805.6A CN202210132805A CN114469206A CN 114469206 A CN114469206 A CN 114469206A CN 202210132805 A CN202210132805 A CN 202210132805A CN 114469206 A CN114469206 A CN 114469206A
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- 201000004920 hematocele of tunica vaginalis testis Diseases 0.000 abstract description 4
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Images
Classifications
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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
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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
- A61B17/3403—Needle locating or guiding means
-
- 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
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
Abstract
The invention relates to the technical field of medical instruments, and discloses a brain retractor with accurate positioning, which comprises a brain retractor mechanism and an accurate positioning guide mechanism, wherein the brain retractor mechanism is used for blocking soft tissues around an operative field; the accurate positioning guide mechanism is used for assisting the brain retracting mechanism to accurately enter an operation target position. According to the invention, the hard catheter can be sleeved on a navigation pen of an IGS (neurosurgery influencing navigation), the required operation position can be accurately inserted through the planning of an IGS D mode, the whole operation process is convenient, the repeated hydrops suction action is not needed, the insertion accuracy is high, cerebrospinal fluid or hematocele can flow out of the hard catheter when the pressure in a ventricle or brain tissue rises after the navigation pen is pulled out and the brain retraction mechanism is inserted in place, so that the injury of the brain of a patient caused by high pressure is avoided, the brain retraction mechanism can be directly and successfully inserted into the ventricle or hematoma cavity along the hard catheter at one time, and the contusion of peripheral brain tissue in the repeated trying process is avoided.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a brain retractor capable of accurately positioning.
Background
The nerve navigation is a preoperative surgical scheme and a positioning technology for real-time guiding of surgical operation in an operation, and has the significance of determining the position and the boundary of lesion to ensure minimally invasive operation, and the currently common disposable brain retraction guiding hard catheter is used for inserting and retracting brain tissue according to the approximate direction of positioning after nerve navigation positioning is used, so that the nerve navigation guiding hard catheter has the defects of low accuracy, easy unnecessary contusion on surrounding brain tissue when the direction is continuously searched, and easy pressure rise in a ventricle or brain tissue in the inserting process.
Therefore, a brain retractor device with accurate positioning is provided.
Disclosure of Invention
The technical task of the invention is to provide a brain retractor with accurate positioning to solve the above problems.
The technical scheme of the invention is realized as follows:
a precisely positioned brain retraction device, comprising:
a brain retraction mechanism for blocking soft tissue surrounding a surgical field;
accurate location guiding mechanism, accurate location guiding mechanism with brain retractor mechanism cooperatees and sets up, just accurate location guiding mechanism is used for supplementaryly brain retractor mechanism is accurate gets into operation target location.
Preferably, the brain retracting mechanism comprises a retractor and a guide, the retractor is detachably sleeved outside the guide, the length of the guide is greater than that of the retractor, and the guide is used for guiding the retractor to be smoothly inserted into the soft tissue.
Preferably, the retractor comprises a retracting housing, the retracting housing is of a cylindrical structure, the radial section of the retracting housing is oval, the tail end of the retracting housing is a flaring end, and the top end of the retracting housing is a necking end.
Preferably, the guider comprises a guide housing, the guide housing is of a cylindrical structure, the radial cross section of the guide housing is oval, the tail end of the guide housing is an open end, an oval through hole is reserved at the center position of the top end of the guide housing, a circular through hole is reserved at the center position of the oval through hole, the guide housing is detachably inserted into the inside of the retraction housing, the top end of the guide housing extends to the outside of a necking end at the top end of the retraction housing, and the necking end is attached to the outer side wall of the guide housing.
Preferably, the diameter of the circular through hole is larger than the minor axis diameter of the elliptical through hole.
Preferably, the tail end of the retracting housing is fixedly provided with an annular supporting seat, the annular supporting seat is oval, and a handle is integrally arranged on the outer annular surface of the annular supporting seat.
Preferably, the tail end of the guide housing is fixedly provided with an annular fixed seat, an outer annular surface of the annular fixed seat is provided with a locking assembly, and the locking assembly is used for locking the annular fixed seat and the annular supporting seat with each other.
Preferably, the locking assembly includes a base, a blocking piece, a partition plate, a spring seat, a cover plate, a connecting plate, a slider, a pressing plate, a spring, a first clamping plate and a second clamping plate, the base is fixedly mounted on an outer annular surface of the annular fixing seat, a mounting groove is formed in a side surface of the base facing the top end of the guide housing, the blocking piece is fixedly mounted on a side surface of the base facing the top end of the guide housing, an outer side surface of the blocking piece is aligned with a side surface of the base, the partition plate is fixedly mounted inside the mounting groove, the spring seat is fixedly mounted on a side surface of the partition plate facing away from the blocking piece, the cover plate is fixedly mounted at a notch of the mounting groove, the connecting plate is slidably mounted between the partition plate and the cover plate, and the slider is slidably mounted between the mounting groove and the cover plate, the sliding block is fixedly connected with one end of the cover plate, which is back to the separation blade, one side of the sliding block, which is back to the cover plate, movably extends to the outside of the base, the pressing plate is fixedly arranged on one side surface of the sliding block back to the cover plate, the spring is arranged between the spring seat and the sliding block, and the spring is in a compressed state, the first clamping plate is fixedly arranged at the end part of one end of the connecting plate back to the sliding block, the first clamping plate and the blocking piece are arranged in parallel, the distance between the first clamping plate and the blocking piece is larger than the thickness of the first clamping plate, the second clamping plate is fixedly arranged at the end part of one end of the cover plate back to the separation blade and is arranged in parallel to the first clamping plate, the handle is clamped between the second clamping plate and the first clamping plate under the action of the spring.
As preferred, the second splint with all seted up the card hole on the side that first splint are close to each other, equal fixed mounting has on the both sides face of handle with card hole matched with card is protruding, works as the handle presss from both sides tightly the second splint with when between the first splint the protruding card of card is gone into inside the card hole.
As preferred, accurate location guiding mechanism includes the stereoplasm pipe, stereoplasm pipe demountable installation in the circular hole of wearing, just the length of stereoplasm pipe is greater than the length of guide housing, the one end of stereoplasm pipe is the open end, just the other end of stereoplasm pipe is dome structure's blind end, evenly seted up a plurality of feed liquor holes near its blind end on the lateral wall of stereoplasm pipe, a plurality of the feed liquor hole centers on the center pin of stereoplasm pipe is the annular equiangular arrangement.
As preferred, the inside fixed mounting of stereoplasm pipe has the transparent silica gel inoxidizing coating, just a plurality of recesses have evenly been seted up on the inner wall of transparent silica gel inoxidizing coating, the feed liquor hole is tubaeform feed liquor hole, just the tip in feed liquor hole runs through the silica gel inoxidizing coating sets up, the main aspects in feed liquor hole is located on the lateral surface of stereoplasm pipe.
Preferably, the retracting housing and the guiding housing are made of transparent polycarbonate material, and the handle and the hard conduit are made of transparent polyphenylene sulfone resin.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention can sleeve the hard catheter on the navigation pen of IGS (neurosurgery influencing navigation), the needed operation position is accurately inserted through the planning of the IGS D mode, then the navigation pen is pulled out, the hard catheter is left on the channel, the circular through hole at the top end of the guiding cover shell is inserted into the opening end of the hard catheter, so that the brain retracting mechanism is inserted into a ventricle or hematoma cavity, when the brain retracting mechanism enters the target position, the hard catheter is slowly pulled out, then the guiding cover shell is slowly pulled out, the retracting cover shell is fixed on the mechanical arm of the fixing device equipped for operation, the operation can be carried out, the whole operation process is more convenient, the action of effusion suction is not required to be repeated, the insertion accuracy is high, cerebrospinal fluid or hematocele can flow out from the hard catheter when the pressure in the ventricle or brain tissue rises after the navigation pen is pulled out and the brain retracting mechanism is inserted in place, the injury of the brain caused by high pressure is avoided, the brain retracting mechanism can be directly and successfully inserted into a ventricle or a hematoma cavity along the hard catheter at one time, so that the contusion to the surrounding brain tissue in the repeated trying process is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a precisely positioned brain retraction device according to an embodiment of the present invention;
fig. 2 is a schematic structural view from another perspective of a precisely positioned brain retraction device according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;
FIG. 4 is a schematic structural diagram of a precision positioning guide mechanism according to an embodiment of the present invention;
FIG. 5 is a cross-sectional structural view of the fine positioning guide taken along section A-A of FIG. 4;
FIG. 6 is an enlarged schematic view of detail B of FIG. 5;
fig. 7 is an exploded view of a precisely positioned brain retraction device according to an embodiment of the present invention;
FIG. 8 is an enlarged schematic view of the detail view C of FIG. 7;
fig. 9 is a schematic structural view of the precisely positioned brain retracting device according to the embodiment of the present invention after the precisely positioning guide mechanism is detached;
fig. 10 is a schematic structural view of a retraction housing of a precision positioning brain retraction device according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a guide housing of a precision positioning brain retraction device according to an embodiment of the present invention;
fig. 12 is a schematic view of a partial explosion configuration of a precision positioning brain retraction device according to an embodiment of the present invention;
fig. 13 is a schematic view of a partial explosion configuration from another perspective of a precisely positioned brain retraction device, in accordance with an embodiment of the present invention;
fig. 14 is an exploded view of a locking assembly of a precision positioning brain retraction device according to an embodiment of the present invention;
fig. 15 is a schematic cross-sectional perspective view of a locking assembly of a precision positioning brain retraction device according to an embodiment of the present invention;
fig. 16 is a cross-sectional plan view of a locking assembly of a precision positioning brain retraction device according to an embodiment of the present invention.
In the figure:
1. a brain retracting mechanism; 101. retracting the housing; 102. a guide housing; 103. a necking end; 104. an annular fixed seat; 105. an elliptical through hole; 106. a circular through hole; 107. an annular supporting seat; 108. a handle;
2. a precise positioning guide mechanism; 201. a rigid conduit; 202. a liquid inlet hole; 203. a transparent silica gel protective layer; 204. a groove;
3. a locking assembly; 301. a base; 302. a spring; 303. a slider; 304. a spring seat; 305. a partition plate; 306. mounting grooves; 307. a baffle plate; 308. a first splint; 309. a connecting plate; 31O, a cover plate; 311. a second splint; 312. a pressing plate; 313. a clamping hole; 314. and (6) clamping and protruding.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
The invention will be further described with reference to the accompanying figures 1-16 and specific embodiments.
Example 1
As shown in fig. 1, a brain retraction device with precise positioning according to an embodiment of the present invention includes a brain retraction mechanism 1 and a precise positioning guide mechanism 2.
As shown in fig. 1, the root brain retractor 1 is used for blocking soft tissues around an operative field, the brain retractor 1 comprises a retractor and a guide, the retractor is detachably sleeved outside the guide, the length of the guide is greater than that of the retractor, and the guide is used for guiding the retractor to smoothly insert into the soft tissues.
As shown in fig. 1 and 10, the root retractor includes a retracting casing 101, the retracting casing 101 is a cylindrical structure, a radial cross section of the retracting casing 101 is an ellipse, a tail end of the retracting casing 101 is a flared end, and a top end of the retracting casing 101 is a constricted end 103.
As shown in fig. 1 to 3, 9 and 11, the guide device includes a guide housing 102, the guide housing 102 is a cylindrical structure, a radial cross section of the guide housing 102 is an ellipse, a tail end of the guide housing 102 is an open end, an ellipse through hole 105 is reserved at a center position of a top end of the guide housing 102, a circular through hole 106 is reserved at a center position of the ellipse through hole 105, the guide housing 102 is detachably inserted into the retraction housing 101, the top end of the guide housing 102 extends to an outer portion of a tapered end 103 at the top end of the retraction housing 101, and the tapered end 103 is attached to an outer side wall of the guide housing 102.
Wherein the diameter of the circular through hole 106 is larger than the minor axis diameter of the elliptical through hole 105, as shown in fig. 11.
Wherein, as shown in fig. 1-fig. 7 and fig. 11, accurate location guiding mechanism 2 and brain retractor 1 cooperate and set up, and accurate location guiding mechanism 2 is used for assisting brain retractor 1 accurate entering operation target location, accurate location guiding mechanism 2 includes stereoplasm pipe 201, stereoplasm pipe 201 demountable installation is in circular interlude hole 106, and the length of stereoplasm pipe 201 is greater than the length of guide housing 102, the one end of stereoplasm pipe 201 is the open end, and the other end of stereoplasm pipe 201 is the blind end of dome structure, a plurality of feed liquor holes 202 have evenly been seted up near its blind end on the lateral wall of stereoplasm pipe 201, a plurality of feed liquor holes 202 are the angular arrangement such as hoop around the center pin of stereoplasm pipe 201.
Wherein, the outer diameter of the hard conduit 201 is matched with the aperture of the circular through hole 106.
By adopting the technical scheme, the designed accurate positioning brain retracting device consisting of the brain retracting mechanism 1 and the accurate positioning guide mechanism 2 is preferably used for planning the use path before craniotomy, so that the aim is to design a path for reaching a target part by a straight line.
This brain of accurate location leads out device can reach gently and lead out the target tissue, increases the visibility of operation position to for the surgical instruments that insert provides smooth and easy working channel, different size specifications can be made to this brain of accurate location leads out device in addition, so that provide different optional ranges for the operation use, the operation position and the surgical instruments controllable scope should be considered comprehensively to the planning before the art, the brain of this accurate location that decides to use suitable size leads out the device. The diameter of the opening of the craniotomy is 1-2cm larger than the widest position of the tail end of the retraction housing 101 of the precise positioning brain retraction device, so that the angle of the precise positioning brain retraction device can be changed according to requirements in the operation process.
When operating the precision positioning brain retraction device:
preoperative IGS (neurosurgical influence navigation) planning should select as many cortical sulcus locations as possible to minimize damage to the brain.
The cortex is firstly cut open, and the incision cut by the cortex is slightly larger than the aperture of the opening at the tail end of the guiding cover shell 102 of the accurate positioning brain retracting device.
After the cerebral cortex is scratched, after the dura mater is opened, the arachnoid is scratched, the hard catheter 201 is sleeved on a navigation pen of an IGS (neurosurgical navigation influence), the deepest 'straight line' sulcus is selected through the 3D mode planning of the IGS, and the shortest distance path from a target part is selected, so that the damage area of the brain tissue is minimized, in order to reduce the drifting of the brain tissue, the planned path is to insert the hard catheter 201 and the horizontal plane of the center of an operation part at 90 degrees vertically, then the navigation pen is slowly and carefully pulled out, effusion in the brain can be discharged through the liquid inlet hole 202 on the side wall of the hard catheter 201, then the circular through hole 106 at the top end of the guiding cover 102 in the brain retracting mechanism 1 is sleeved on the hard catheter 201 and pushed along the preoperatively planned 'straight line' along the central axis of the hard catheter 201. The oval through hole 105 reserved at the center of the top end of the guiding cover shell 102 facilitates binocular observation in the operation process. Therefore, the retracting case 101 and the guiding case 102 are adjusted until the aperture diameter section of the elliptical through hole 105 is parallel to the interpupillary distance of the user and parallel to the binocular microscope lens.
It is recommended that the brain retracting mechanism 1 of the precisely positioned brain retracting device is inserted after being wetted with sterile physiological saline.
The precisely positioned brain retraction device guides the circular insertion hole 106 at the top end of the housing 102 to perform necessary resection actions simultaneously during the advancement of the brain retraction mechanism 1.
When the brain retractor 1 is gradually pushed towards the operation site (about 1cm for each push), the effusion in the brain can be discharged through the liquid inlet hole 202 on the side wall of the hard conduit 201 in the process of pushing the brain retractor 1, so that the whole operation process is more convenient, and the effusion suction action does not need to be repeated.
After the brain retracting mechanism 1 reaches the operation position, the hard catheter 201 and the guiding housing 102 are slowly pulled out, and the retracting housing 101 is fixed on a mechanical arm of a fixing device equipped for operation, so that the operation is performed.
Therefore, when the precise positioning brain retracting device is used, the hard catheter 201 can be sleeved on a navigation pen of an IGS (neurosurgery navigation affected), a required operation position can be precisely inserted through the 3D mode planning of the IGS, then the navigation pen is pulled out, the hard catheter 201 is left on a channel, the circular through hole 106 at the top end of the guiding housing 102 is inserted into the open end of the hard catheter 201, so that the brain retracting mechanism 1 is inserted into a ventricle or hematoma cavity, when the brain retracting mechanism 1 enters a target position, the hard catheter 201 is slowly pulled out, then the guiding housing 102 is slowly pulled out, the retracting housing 101 is fixed on a mechanical arm of a fixing device for operation, the whole operation process is convenient, the action of effusion suction does not need to be repeated, the insertion accuracy is high, cerebrospinal fluid or hematocele can flow out from the hard catheter 201 when the pressure in the ventricle or brain rises after the navigation pen is pulled out and the brain retracting mechanism 1 is inserted in place, the brain retractor 1 can be directly and successfully inserted into a ventricle or a hematoma cavity along the hard catheter 201 at one time, and contusion to peripheral brain tissue in repeated attempts is avoided.
Example 2
As shown in fig. 7, 9 and 10, the present embodiment is different from embodiment 1 in that an annular support seat 107 is fixedly installed at the tail end of the retracting housing 101, the annular support seat 107 is oval, and a handle 108 is integrally disposed on the outer annular surface of the annular support seat 107.
As shown in fig. 9-11, the annular fixing seat 104 is fixedly installed at the rear end of the guiding housing 102, and a locking component 3 is disposed on the outer annular surface of the annular fixing seat 104, and the locking component 3 is used for locking the annular fixing seat 104 and the annular supporting seat 107 to each other.
As shown in fig. 1 and fig. 9 to fig. 16, the locking assembly 3 includes a base 301, a blocking plate 307, a partition 305, a spring seat 304, a cover plate 310, a connecting plate 309, a slider 303, a pressing plate 312, a spring 302, a first clamping plate 308, and a second clamping plate 311, the base 301 is fixedly mounted on an outer annular surface of the annular fixing seat 104, a mounting groove 306 is formed on a side surface of the base 301 facing a top end of the guide housing 102, the blocking plate 307 is fixedly mounted on a side surface of the base 301 facing the top end of the guide housing 102, an outer side surface of the blocking plate 307 is aligned with a side surface of the base 301, the partition 305 is fixedly mounted inside the mounting groove 306, the spring seat 304 is fixedly mounted on a side surface of the partition 305 facing away from the blocking plate 307, the cover plate 310 is fixedly mounted at a notch of the mounting groove 306, the connecting plate 309 is slidably mounted between the partition 305 and the cover plate 310, the slider 303 is slidably mounted between the mounting groove 306 and the cover plate 310, the sliding block 303 and one end of the cover plate 310, which is back to the blocking piece 307, are fixedly connected, one side of the sliding block 303, which is back to the cover plate 310, movably extends to the outside of the base 301, the pressing plate 312 is fixedly installed on one side of the sliding block 303, which is back to the cover plate 310, the spring 302 is installed between the spring seat 304 and the sliding block 303, the spring 302 is in a compressed state, the first clamping plate 308 is fixedly installed at one end of the connecting plate 309, which is back to the sliding block 303, the first clamping plate 308 is arranged in parallel with the blocking piece 307, the distance between the first clamping plate 308 and the blocking piece 307 is greater than the thickness of the first clamping plate 308, the second clamping plate 311 is fixedly installed at one end of the cover plate 310, which is back to the blocking piece 307, the second clamping plate 311 is arranged in parallel with the first clamping plate 308, and the handle 108 is clamped between the second clamping plate 311 and the first clamping plate 308 under the action of the spring 302.
As shown in fig. 12 and 13, the second clamping plate 311 and the first clamping plate 308 are provided with clamping holes 313 on one side surface close to each other, the handle 108 is fixedly provided with clamping protrusions 314 on both side surfaces thereof, the clamping protrusions 314 are engaged with the clamping holes 313, and the clamping protrusions 314 are clamped into the clamping holes 313 when the handle 108 is clamped between the second clamping plate 311 and the first clamping plate 308.
By adopting the technical scheme, the arranged annular supporting seat 107, the handle 108, the annular fixed seat 104 and the locking component 3 are matched, so that the retracting cover 101 and the guide cover 102 can be quickly locked and unlocked, when the retracting cover 101 and the guide cover 102 are locked, the bad phenomenon that the retracting cover 101 is separated from the guide cover 102 in the process that the retracting cover 101 and the guide cover 102 are simultaneously inserted into a ventricle or a hematoma cavity along the hard catheter 201 can be prevented, once the retracting cover 101 and the guide cover 102 are separated, the retracting cover 101 cannot be smoothly inserted into the target position of the ventricle or the hematoma cavity, when the retracting cover 101 and the guide cover 102 are simultaneously and smoothly inserted into the target position of the ventricle or the hematoma cavity along the hard catheter 201, the second clamping plate 311 and the first clamping plate 308 can be relatively far away by simultaneously pressing the pressing plate 312 with force of the index finger and the thumb, the clamped handle 108 can get free from the constraint of the second clamping plate 311 and the first clamping plate 308, it is possible to easily separate and take out the guide housing 102 from the inside of the retracting housing 101, leaving the retracting housing 101 as an operation passage, and, in addition, the handle 108 may be a fixed part when the retracting case 101 is fixed to a robot arm of a fixing device equipped for surgery, therefore, the arrangement of the annular supporting seat 107, the handle 108, the annular fixed seat 104 and the locking assembly 3, so that the precise positioning brain retracting device is convenient to fix with the mechanical arm of the fixing device equipped for the operation, the operation process can effectively prevent the unfavorable phenomenon that the retracting cover shell 101 is separated from the guide cover shell 102 in the process that the retracting cover shell 101 and the guide cover shell 102 are simultaneously inserted into the ventricle or hematoma cavity along the hard catheter 201, further ensuring that the retracting cover shell 101 can be smoothly inserted into the target position of a brain chamber or a hematoma cavity, and meanwhile, the retracting cover shell 101 and the guiding cover shell 102 are convenient and fast to separate actively.
Example 3
As shown in fig. 6 and 8, the difference between the present embodiment and embodiment 2 is that a transparent silica gel protective layer 203 is fixedly installed inside the hard conduit 201, and a plurality of grooves 204 are uniformly formed on an inner wall of the transparent silica gel protective layer 203, the liquid inlet hole 202 is a trumpet-shaped liquid inlet hole, a small end of the liquid inlet hole 202 penetrates through the transparent silica gel protective layer 203, and a large end of the liquid inlet hole 202 is located on an outer side surface of the hard conduit 201.
By adopting the technical scheme, the arranged transparent silica gel protective layer 203 can prevent the navigation from being rubbed and damaged by the inner wall of the hard guide pipe 201 and can also prevent the hard guide pipe 201 from falling off from the navigation pen easily, in addition, a plurality of grooves 204 are uniformly formed in the inner wall of the transparent silica gel protective layer 203, so that a relatively soft groove wall is formed between the adjacent grooves 204, the groove wall is easy to generate elastic deformation, the navigation pen is easy to insert into the hard guide pipe 201, and meanwhile, the navigation pen with a slightly thicker or thinner point can be matched for use;
in addition, be loudspeaker form feed liquor hole with feed liquor hole 202, and the tip in feed liquor hole 202 runs through transparent silica gel inoxidizing coating 203 and sets up, and the main aspects of feed liquor hole 202 are located the lateral surface of stereoplasm pipe 201 for hydrops in the brain can get into the inside of stereoplasm pipe 201 through feed liquor hole 202 smoothly, and be difficult to flow back to the brain inside through feed liquor hole 202, thereby make stereoplasm pipe 201's practicality better.
Example 4
The present embodiment is different from embodiment 3 in that the retracting case 101 and the guiding case 102 are made of transparent polycarbonate material, and the handle 108 and the hard catheter 201 are made of transparent polyphenylene sulfone resin.
By adopting the technical scheme, the retracting cover 101 and the guiding cover 102 made of transparent polycarbonate materials have better transparency and smoother surfaces, can reduce the damage to the brain tissue of a patient, have better surgical field, are convenient for observing the lesion tissue and are nontoxic;
in addition, the handle 108 and the hard conduit 201 made of the transparent polyphenylene sulfone resin ensure that the handle 108 and the hard conduit 201 have better hardness, are not easy to break and have stable performance.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the hard catheter 201 is sleeved on a navigation pen of an IGS (neurosurgery affecting navigation), a required operation position is accurately inserted through the 3D mode planning of the IGS, then the navigation pen is pulled out, the hard catheter 201 is left on a channel, the circular through hole 106 at the top end of the guide housing 102 is inserted into the open end of the hard catheter 201, so that the brain retraction mechanism 1 is inserted into a ventricle or hematoma cavity, when the brain retraction mechanism 1 enters a target position, the hard catheter 201 is slowly pulled out, the second splint 311 and the first splint 308 can be relatively far away by simultaneously pressing the pressing plate 312 with the forefinger and the thumb, the clamped handle 108 can get rid of the constraint of the second splint 311 and the first splint 308 freely, the guide housing 102 is then slowly pulled out, the retraction housing 101 is fixed on a mechanical arm of a fixing device equipped for operation, and then the operation can be carried out, whole operation process is more convenient, need not the action of repeated hydrops suction, it is high to insert the accuracy, cerebrospinal fluid or hematocele can flow out from stereoplasm pipe 201 when extracting the navigation pen back to when inserting brain retraction mechanism 1 this section time intracerebral or brain tissue internal pressure rising that targets in place, avoided the damage that high pressure brought for patient's brain, brain retraction mechanism 1 can be directly once only successfully inserted ventricle or hematoma chamber along stereoplasm pipe 201, the contusion of having avoided trying the in-process repeatedly to cause peripheral brain tissue has been avoided.
[ Note ]
Before use, please carefully check whether the precisely positioned brain retraction device is intact. Please confirm that the locking assembly 3 is intact or that the top edge of the retracting enclosure 101 being advanced may injure the brain tissue when the guiding enclosure 102 and retracting enclosure 101 are separated.
The retracting enclosure 101 can not be advanced into the brain tissue without using the guiding enclosure 102. Otherwise, the top end of the retracting enclosure 101 may injure the tissue site.
Please confirm that the locking assembly 3 is locked before use.
The precisely positioned brain retraction device is not used with edges or imperfections or cracks in the retraction housing 101.
The precise positioning brain retractor is designed to be a disposable product, and the precise positioning brain retractor is not required to be repeatedly used by adopting methods such as high-pressure steam sterilization, gamma sterilization, liquid sterilization and the like.
Please not attach the surgically equipped fixation device too tightly to the handle 108 in order to avoid breaking the attachment portion of the handle 108.
Without forcing the precisely positioned brain retraction device into the bony or mucosally lined passageways, the surrounding tissue may crush the retraction housing 101 or the guide housing 102.
The user is obligated to check whether the precisely positioned brain retraction device is suitable for his own technical requirements and special applications. The disposal of the used precisely positioned brain retraction device should comply with the relevant regulations of the country.
The precise positioning brain retractor adopts ethylene oxide for sterilization.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
Claims (10)
1. A precisely positioned brain retraction device, comprising:
the brain retractor mechanism (1), the brain retractor mechanism (1) is used for blocking the soft tissue around the surgical field;
accurate location guiding mechanism (2), accurate location guiding mechanism (2) with brain retractor mechanism (1) cooperatees and sets up, just accurate location guiding mechanism (2) are used for supplementarily brain retractor mechanism (1) is accurate gets into operation target location.
2. The brain retraction device according to claim 1, wherein the brain retraction mechanism (1) comprises a retractor and a guide, the retractor is detachably sleeved on the outside of the guide, the length of the guide is longer than that of the retractor, and the guide is used for guiding the retractor to be smoothly inserted into the soft tissue.
3. The brain retraction device according to claim 2, wherein the retractor comprises a retraction housing (101), the retraction housing (101) is a cylindrical structure, the radial section of the retraction housing (101) is an ellipse, the tail end of the retraction housing (101) is a flared end, and the top end of the retraction housing (101) is a constricted end (103).
4. The brain retraction device with precise positioning according to claim 3, wherein the guider comprises a guiding housing (102), the guiding housing (102) is of a cylindrical structure, the radial section of the guiding housing (102) is elliptical, the tail end of the guiding housing (102) is an open end, an elliptical through hole (105) is reserved at the center position of the top end of the guiding housing (102), a circular through hole (106) is reserved at the center position of the elliptical through hole (105), the guiding housing (102) is detachably inserted into the inside of the retracting housing (101), the top end of the guiding housing (102) extends to the outside of the reduced end (103) at the top end of the retracting housing (101), and the reduced end (103) is attached to the outer side wall of the guiding housing (102).
5. A precisely positioned brain retraction device according to claim 4, wherein the diameter of the circular through hole (106) is larger than the diameter of the minor axis of the oval through hole (105).
6. The brain retraction device with precise positioning according to claim 5, wherein an annular supporting seat (107) is fixedly installed at the tail end of the retraction housing (101), the annular supporting seat (107) is oval, and a handle (108) is integrally arranged on the outer annular surface of the annular supporting seat (107).
7. The brain retraction device with precise positioning according to claim 6, wherein an annular fixed seat (104) is fixedly installed at the tail end of the guiding housing (102), a locking component (3) is arranged on the outer annular surface of the annular fixed seat (104), and the locking component (3) is used for locking the annular fixed seat (104) and the annular supporting seat (107) with each other.
8. The brain retraction device with accurate positioning function according to claim 7, wherein the locking assembly (3) comprises a base (301), a baffle (307), a partition (305), a spring seat (304), a cover plate (310), a connection plate (309), a sliding block (303), a pressing plate (312), a spring (302), a first clamping plate (308) and a second clamping plate (311), the base (301) is fixedly installed on the outer annular surface of the annular fixed seat (104), a mounting slot (306) is formed on one side surface of the base (301) facing the top end of the guide housing (102), the baffle (307) is fixedly installed on one side surface of the base (301) facing the top end of the guide housing (102), the outer side surface of the baffle (307) is aligned with one side surface of the base (301), the partition (305) is fixedly installed inside the mounting slot (306), the spring seat (304) is fixedly installed on one side surface of the partition plate (305) facing away from the baffle plate (307), the cover plate (310) is fixedly installed at a notch of the installation groove (306), the connecting plate (309) is slidably installed between the partition plate (305) and the cover plate (310), the slider (303) is slidably installed between the installation groove (306) and the cover plate (310), the slider (303) is fixedly connected with one end of the cover plate (310) facing away from the baffle plate (307), one side of the slider (303) facing away from the cover plate (310) movably extends to the outside of the base (301), the pressing plate (312) is fixedly installed on one side surface of the slider (303) facing away from the cover plate (310), the spring (302) is installed between the spring seat (304) and the slider (303), and the spring (302) is in a compressed state, the first clamping plate (308) is fixedly installed at one end portion, back to the sliding block (303), of the connecting plate (309), the first clamping plate (308) is arranged in parallel with the blocking piece (307), the distance between the first clamping plate (308) and the blocking piece (307) is larger than the thickness of the first clamping plate (308), the second clamping plate (311) is fixedly installed at one end portion, back to the blocking piece (307), of the cover plate (310), the second clamping plate (311) is arranged in parallel with the first clamping plate (308), and the handle (108) is clamped between the second clamping plate (311) and the first clamping plate (308) under the action of the spring (302).
9. The brain retractor device according to claim 8, wherein a clamping hole (313) is formed in each of the two adjacent side surfaces of the second splint (311) and the first splint (308), a clamping protrusion (314) matched with the clamping hole (313) is fixedly mounted on each of the two side surfaces of the handle (108), and the clamping protrusion (314) is clamped into the clamping hole (313) when the handle (108) is clamped between the second splint (311) and the first splint (308).
10. The brain retraction device according to claim 5, wherein the precise positioning guide mechanism (2) comprises a hard conduit (201), the hard conduit (201) is detachably installed in the circular through hole (106), the length of the hard conduit (201) is greater than that of the guide housing (102), one end of the hard conduit (201) is an open end, the other end of the hard conduit (201) is a closed end of a dome structure, a plurality of liquid inlet holes (202) are uniformly formed in the side wall of the hard conduit (201) close to the closed end of the hard conduit, and the plurality of liquid inlet holes (202) are circumferentially arranged at equal angles around the central axis of the hard conduit (201).
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| CN202210132805.6A CN114469206B (en) | 2022-02-14 | 2022-02-14 | Accurate location brain retractor |
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| CN202210132805.6A CN114469206B (en) | 2022-02-14 | 2022-02-14 | Accurate location brain retractor |
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| CN114469206B (en) | 2023-11-07 |
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