CN108451562B - Stepless regulating and expanding device for craniocerebral lumen - Google Patents
Stepless regulating and expanding device for craniocerebral lumen Download PDFInfo
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- CN108451562B CN108451562B CN201810211874.XA CN201810211874A CN108451562B CN 108451562 B CN108451562 B CN 108451562B CN 201810211874 A CN201810211874 A CN 201810211874A CN 108451562 B CN108451562 B CN 108451562B
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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
- 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
- A61B90/08—Accessories or related features not otherwise provided for
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
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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
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
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Abstract
A stepless regulating and expanding device for a craniocerebral lumen, which comprises an elastic expansion piece; the expansion sheet has a first shape and a second shape under the limitation of external restraint, wherein the first shape is a multi-layer tightly curled cylinder shape, and the second shape is a curled cylinder shape; the number of coils of the second form is smaller than that of coils of the first form; the expansion sheet is controllably expandable from a first configuration to a second configuration. The invention realizes the stepless expansion of brain tissues in craniocerebral operations by adopting the mode that the elastic expansion piece is gradually released and expanded from a tightly curled state under the action of internal stress, has the characteristics of simple structure, simple operation and the like, and realizes the regulation and control of craniocerebral operation channels. The invention has small damage to brain tissue, can ensure the safe and reliable operation channel, greatly reduces iatrogenic trauma in the operation process, simultaneously reduces the workload and operation difficulty of doctors, and greatly improves the prognosis of patients.
Description
Technical Field
The invention belongs to the field of medical appliances, and relates to a craniocerebral lumen stepless regulation expansion device applied to craniocerebral operations.
Background
Intracranial hematoma, tumor and other intracranial lesions have the characteristics of deep position, close to important functional areas and the like, so that the operation access of the brain interior area is complex, the operation process is difficult, the risk is high, the hemostasis of the operation area is difficult, the total cutting rate is not high, and especially, the brain tissue is very tender, and iatrogenic injury is easily caused in the operation process. When performing an intra-brain operation, a clinical operation access such as a cortical fistulization is often required to reach a deep focal zone, and the process inevitably causes iatrogenic brain tissue damage due to the passage of instruments.
The prior invention patent CN106994027 discloses a brain tissue stretching device, which comprises a stretching device main body, a fixing device, an inner core and a locking component, wherein the brain tissue stretching device is used for stretching and fistulizing from a cerebral cortex, and then performing targeted operation on the deep part after the brain tissue is stretched and fixed, so that the purpose of exposing an operation field and enabling operation to be more convenient and easier is achieved. However, the structural design of the device is not reasonable, and the device is easy to damage brain tissues in the process of implantation and extraction; and the operation is complex, the stepless regulation function is not realized, and the quantitative regulation of the size of the cortical expansion area is not realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the craniocerebral cavity expansion device which has the advantages of simple structure, easy operation, strong safety and controllability, small iatrogenic damage and stepless regulation function.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a stepless regulating and expanding device for craniocerebral lumen comprises an elastic expansion piece 1. The expansion sheet 1 has a first shape and a second shape under the limitation of external constraint, wherein the first shape is a multi-layer tightly curled cylinder shape, and the second shape is a curled cylinder shape; the number of coils of the second form is smaller than that of coils of the first form; the expansion sheet is controllably expandable from a first configuration to a second configuration.
Further, the expansion sheet 1 is a rectangular lamellar elastic structure with a thickness of 0.1 to 5 mm.
Further, the expansion sheet 1 has a number of curls of 2 to 10 turns in the first configuration.
Further, the expansion sheet 1 is of a single-layer metal or plastic structure or of a double-layer metal, plastic or metal/plastic composite structure; the metal is memory metal or alloy.
Further, the craniocerebral lumen stepless regulation expansion device further comprises a controller 2 for restraining and limiting the form of the expansion piece 1, wherein the controller 2 is in an L shape as a whole and comprises a fixing part 20 and a handle part 21 which are mutually perpendicular; the fixing part 20 is arranged along the outer side 11 of the expansion sheet 1 and comprises an elongated outer side plate 22 and an inner side plate 23 which are consistent with the expansion sheet 1 in height; the upper and lower ends of the outer side plate 22 and the inner side plate 23 are connected and closed, and a narrow slit 24 is formed in the middle; the outer side edge of the expansion sheet 1 is fixedly connected with the side edge of the outer side plate 22 of the controller 2, and the outer ring (namely the first ring from outside to inside in the winding process) or the outermost multiple rings of the expansion sheet 1 pass through the narrow slit 24; the handle portion 21 is located at the upper end of the fixing portion, and is disposed outwardly away from the expansion sheet 1 in a direction perpendicular to the fixing portion.
Further, the expansion piece 1 is provided with an elongated protrusion 13 along the direction of the inner side 12, and the height of the protrusion 13 is larger than the width of the narrow slit 24 of the fixing portion 20.
Further, a through hole 221 is formed in the outer side plate 22 of the controller 2, and a pressing block 28 is arranged in the through hole 221; the pressing block 28 can move in the through hole 221 so as to press or release the expansion sheet 1 in the narrow slit 24 of the fixing part 20; the handle part 21 is provided with an operating rod 25, and the operating rod 25 is connected with the handle part 21 in an X-shaped scissor-shaped structure through a rotating shaft 26; the operation end 252 of the operation rod 25 is arranged in parallel with the handle part 21, and the operation end 251 of the operation rod 25 is contacted with the pressing block 28; by depressing or lifting the operating end 252 of the operating lever 25, the operating end 251 can be controlled to squeeze or release the press block 28.
Further, the craniocerebral lumen stepless regulation expansion device further comprises a sheath 3 arranged in the cylindrical expansion piece 1, a funnel-shaped syringe interface 31 is arranged at the upper part of the sheath 3, and a sheath body 32 with the same height as the expansion piece 1 is coaxially arranged at the lower part of the sheath 3 and the syringe interface 31; the diameter of the sheath body 32 is consistent with the diameter of the cylinder inner space of the expansion sheet 1 in the first form, and a through hole 35 which is communicated with the syringe interface 31 and penetrates up and down is arranged in the sheath body 32; the inside of the sheath 3 is also provided with a hard core 4.
Further, the cross section of the protrusion 13 arranged at the inner side 12 of the expansion piece 1 is in an inverted trapezoid structure with large outside and small inside, and the sheath body 32 of the sheath 3 is provided with a clamping groove 33 matched with the protrusion 13.
Further, a vertical downward positioning bolt 34 is arranged at the outer side of the syringe interface 31 of the sheath 3; the handle portion 21 is provided with a positioning hole 29 which is matched with the positioning bolt 34.
The invention relates to a stepless regulation expansion device for a craniocerebral lumen, which realizes stepless expansion of brain tissues in craniocerebral operation by adopting a mode that an elastic expansion piece is gradually released and expanded from a tightly curled state under the action of internal stress, has the characteristics of simple structure, simple operation and the like, and realizes regulation control of a craniocerebral operation channel. The invention has small damage to brain tissue, can ensure the safe and reliable operation channel, greatly reduces iatrogenic trauma in the operation process, simultaneously reduces the workload and operation difficulty of doctors, and greatly improves the prognosis of patients.
Drawings
FIG. 1 is a schematic view of the overall structure of a craniocerebral lumen stepless adjustment expansion device according to the present invention (the expansion piece is in a first form in the figure);
FIG. 2 is a schematic view of the bottom structure of a craniocerebral lumen stepless adjustment expansion device of the present invention;
FIG. 3 is a schematic view of the overall structure of an expansion plate of a craniocerebral lumen stepless adjustment expansion device according to the present invention in a first configuration;
FIG. 4 is a schematic diagram of the overall structure of a controller for a craniocerebral lumen stepless adjustment expansion device according to the present invention (the operation end is in a compressed state in the figure);
FIG. 5 is a schematic view of the overall structure of a sheath of a craniocerebral lumen stepless adjustment expansion device according to the present invention;
FIG. 6 is a schematic view of the overall structure of a hard core of a craniocerebral lumen stepless adjustment expansion device of the present invention;
FIG. 6 is a schematic view of the overall structure of a hard core of a craniocerebral lumen stepless adjustment expansion device of the present invention;
FIG. 7 is a schematic view of the overall structure of a craniocerebral lumen stepless adjustment expansion device according to the present invention (the expansion piece is in the second shape);
FIG. 8 is a schematic view of a portion of a controller for a craniocerebral lumen stepless adjustment expansion device according to the present invention (the operating end is shown in a released state).
Description of the embodiments
An embodiment of a craniocerebral lumen stepless adjustment expansion device according to the present invention is further described below with reference to FIGS. 1-8. The invention is not limited to the description of the following examples of a craniocerebral lumen stepless adjustment expansion device.
As shown in fig. 1 and 2, a craniocerebral lumen stepless adjustment expansion device comprises an expansion sheet 1, a controller 2, a tube sheath 3 and a hard core 4. The expansion sheet 1 is of a cylindrical structure formed by rolling rectangular lamellar elastic materials, the tube sheath 3 and the hard core 4 are arranged inside the cylindrical expansion sheet 1, and the controller 2 is positioned outside the expansion sheet 1 and plays a role in restraining and limiting the form of the expansion sheet 1.
As shown in fig. 2 and 3, the overall structure of the expansion sheet 1 of the craniocerebral cavity stepless adjustment expansion device is schematically shown. The expansion sheet 1 is formed by rolling a rectangular lamellar elastic material, and after the expansion sheet 1 is rolled and molded, the expansion sheet has an external expansion internal stress. Specifically, the expansion sheet 1 may be a single-layer metal, memory metal, alloy or plastic structure, or may be a double-layer metal, plastic or metal/plastic composite structure, and the thickness thereof is 0.1 to 5 mm. In practical application, the thickness of the expansion sheet 1 should be reduced as much as possible on the premise of ensuring sufficient strength and elasticity, so as to reduce the cross-sectional diameter of the device and further reduce the trauma to brain tissues when establishing a surgical channel. The expansion sheet 1 has a first shape and a second shape under the constraint of the controller 2, wherein the first shape is a multi-layer tightly curled cylindrical structure (as shown in fig. 3), and the second shape is a single-layer curled cylindrical structure (as shown in fig. 7). In the operation process, the expansion sheet 1 has a smaller cross-section diameter in the first form, so that the expansion sheet is convenient to be inserted into brain tissues to establish an operation channel; after insertion, the expansion sheet 1 is gradually controlled to expand from the first shape to the second shape under the action of internal stress and under the control of a controller, so that a surgical channel is established and expanded for a doctor to perform a surgery in a single-layer curled cylindrical structure. As a specific embodiment, the expansion sheet 1 has a curl number of 2 to 10 in the first form. After the expansion sheet 1 is inserted into brain tissue and fully expanded to the second shape, the expansion sheet can be of a single-layer or multi-layer cylindrical structure, and can also be only partially expanded according to the needs, a multi-layer cylindrical structure is formed after expansion (the number of coils of the second shape is smaller than that of coils of the first shape at the moment), and the expansion amount can be determined and adjusted steplessly according to the needs of operations, so that the needs of most of operation differentiation are met. Preferably, the expansion sheet 1 may be constructed of transparent plastic, so as to facilitate observation of the brain tissue state outside the expansion sheet 1 during the operation.
The controller 2 is used for controlling the diameter and the expansion amount of the multi-layer rolled cylindrical structure of the expansion sheet 1, and can achieve the function in various ways, and the controller should be regarded as falling within the protection scope of the invention without departing from the concept of the invention. As shown in fig. 1, 2 and 4, a specific embodiment of the controller 2 is provided, and the controller 2 is generally L-shaped and includes a fixing portion 20 and a handle portion 21 perpendicular to each other.
The fixing part 20 is arranged along the outer side 11 of the expansion sheet 1, and comprises an elongated outer side plate 22 and an inner side plate 23 which are in height consistent with the expansion sheet 1. The outer and inner plates 22, 23 have a curvature, as seen in horizontal cross section, similar to the outer ring of the first configuration of the expansion sheet 1, so that the device is as nearly circular as possible in horizontal cross section. The upper and lower ends of the outer side plate 22 and the inner side plate 23 are connected and closed, and a narrow slit 24 is formed in the middle. The outer side 11 of the expansion sheet 1 is fixedly connected with the side edge of the outer side 22 of the controller 2, so that the outer side 11 of the expansion sheet 1 is fixed (detachable fixing modes such as clamping and the like can also be adopted, so that the device can be conveniently assembled or disassembled). At the same time, the outer ring of the expansion sheet 1 (i.e. the first ring from outside to inside during winding) passes through the narrow slit 24, and the rest part is continuously rolled inside to form a barrel shape. As another embodiment, the outer 2 or more turns of the expansion sheet 1 can be penetrated through the narrow slit 24 and wound into a barrel shape, so that the second form can be composed of 2 or more turns of structures, and the expansion strength of the expansion sheet 1 can be improved or the thickness of the expansion sheet 1 can be reduced on the premise of keeping the expansion strength unchanged. The outer side plate 22 of the controller 2 is provided with a through hole 221 along the direction perpendicular to the outer ring plane of the expansion sheet 1, a pressing block 28 is arranged in the through hole 221, and the pressing block 28 can move inside and outside the through hole 221, so that the expansion sheet 1 in the narrow slit 24 of the fixing part 20 is pressed or released. Specifically, when inward pressure is applied to the pressing block 28, the pressing block 28 moves inward along the through hole 221, and the first circle of the expansion sheet 1 in the narrow slit 24 is pressed against the inner side plate 23 of the controller 2, so that controlled expansion and limiting fixation of the expansion sheet 1 are realized.
As shown in fig. 4, 7 and 8, the handle portion 21 is located at the upper end of the fixing portion, and is disposed away from the expansion sheet 1 along the direction perpendicular to the fixing portion, so that the device is mainly used for being convenient for holding, positioning and operating, and meanwhile, cooperates with the pressing block 28 to achieve the limiting function on the expansion sheet 1. The handle portion 21 is provided with an operating lever 25, and the operating lever 25 is rotatable about a rotation axis 26 to form an "X" -shaped scissor-like movement structure together with the handle portion 21. The operating end 252 of the operating lever 25 is arranged parallel to the handle portion 21, having both a squeeze and release position. When the operation rod 25 is in the extrusion position, the operation end 252 is aligned with and locked with the handle part 21 for being held or fixed by an operator, and at the moment, the action end 251 of the operation rod 25 is contacted with the pressing block 28 and generates enough pressure to fix the pressing block 28 to the expansion sheet 1; when the operation lever 25 is in the release position, the operation end 252 is lifted upward, the operation end 251 of the operation lever 25 is separated from the pressing block 28, and the pressing block 28 releases the expansion sheet 1. As shown in fig. 8, as a specific embodiment, the end of the operating lever 25 is provided with a protrusion 253, and the end of the handle portion 21 is provided with two or more grooves 211 corresponding to the protrusion 253, so that the positioning effect of the operating end 252 and the handle portion 21 at different positions can be achieved by matching the protrusion 253 with different grooves 211.
As shown in fig. 2, 5 and 6, the craniocerebral lumen stepless adjustment expansion device further comprises a sheath 3 arranged in the cylindrical expansion piece 1, a funnel-shaped syringe interface 31 is arranged at the upper part of the sheath 3, and a sheath body 32 with the same height as the expansion piece 1 is coaxially arranged at the lower part of the sheath 3 and the syringe interface 31. The diameter of the sheath body 32 is identical to the diameter of the cylinder inner space of the expansion sheet 1 in the first form, and a through hole 35 which is communicated with the syringe interface 31 and penetrates up and down is formed in the sheath body 32. A hard core 4 is also arranged in the sheath 3, and the upper part of the hard core 4 is in a cone-shaped structure and is consistent with the internal space structure of the injector interface 31; the lower part is a cylindrical solid core, and the diameter of the solid core is consistent with that of the through hole 35 of the tube sheath 3.
As shown in fig. 2, the bottom structure of the sheath 3 is in a circular arc shape or a frustum shape, and the bottom structure of the hard core 4 is in a circular arc shape or a semicircle shape, which has the effect that when the expansion sheet 1 is in the first form, the bottom of the expansion sheet 1 formed by the multi-layer rolling, the bottom of the sheath 3 and the bottom of the hard core 4 are matched to form a blunt round bottom structure together, so that the damage to brain tissues caused by the device in the insertion operation is reduced. ( In the drawings of the specification, in order to clearly show the rolled structure of the expansion sheet 1, the thickness of the expansion sheet 1 and the interval between the multi-layered structures are large. In practical application, the thickness of the expansion sheet 1 will be very thin, and after the expansion sheet is rolled, the layers are closely attached, and almost no space exists, so that the expansion sheet 1 and the bottom of the sheath 3 and the hard core 4 can form a blunt round structure together in the first form. )
As shown in fig. 2 and 3, the expansion piece 1 is provided with a strip-shaped protrusion 13 along the direction of the inner side 12, and the height of the protrusion 13 is greater than the width of the narrow slit 24 of the fixing portion 20, so as to avoid that the inner side 12 of the expansion piece 1 is separated from the narrow slit 24 of the fixing portion 20, and accidental injury is caused to a patient. As a preferred embodiment, the cross section of the protrusion 13 disposed at the inner side 12 of the expansion piece 1 is an inverted trapezoid structure with large outside and small inside, and the sheath body 32 of the sheath 3 is provided with a clamping groove 33 matched with the protrusion 13. In the first form of the expansion sheet 1, the clamping groove 33 of the sheath 3 can be inserted into the bulge 13 from top to bottom, so that the sheath 3 and the inner side 12 of the expansion sheet 1 are combined into a whole. The function of this structure is that when the expansion sheet 1 is expanded from the first state to the second state, since the sheath 3 is already combined with the expansion sheet 1, the controllable expansion of the expansion sheet 1 can be achieved by manually rotating the sheath 3, thereby making the expansion operation of the expansion sheet 1 simpler and safer. Meanwhile, a vertical downward positioning bolt 34 is arranged at the outer side of the syringe interface 31 of the tube sheath 3; the handle part 21 is provided with a positioning hole 29 which is matched with the positioning bolt 34, and an operator can insert the positioning bolt 34 into the positioning hole 29 at any time in the expanding process of the expanding sheet 1, so that the expanding process of the expanding sheet 1 is stopped, and the device is more flexible and convenient to use.
The device comprises the following steps: first, the device is assembled according to the structure of fig. 1, wherein the expansion sheet 1 is in a first form; secondly, inserting the device into brain tissue, wherein the hard core 4 can be pulled out and inserted into a syringe needle in the inserting process, and operations such as deep stratified fluid sucking and the like are performed; thirdly, lifting the operation end 252 of the operation rod 25 upwards to separate the operation end 251 of the operation rod 25 from the pressing block 28, and then releasing the expansion sheet 1; step four, slightly lifting the sheath 3 upwards to separate the positioning bolt 34 of the sheath 3 from the positioning hole 29 of the handle part 21, and then manually rotating the sheath 3 to drive the expansion sheet 1 to expand gradually; fifthly, when the expansion sheet 1 is expanded to a proper size, the operating rod 25 is pressed down, the expansion sheet 1 is locked, and the tubular sheath 3 is completely pulled out, and at the moment, a cylindrical space formed by the expansion sheet 1 in a surrounding manner is the established operation channel space; step six, after the operation is finished, inserting back the sheath 3, releasing the action end 251 of the operation rod 25, manually rotating the sheath 3 in the opposite direction to gradually curl the expansion sheet 1, and pulling out the device after the expansion sheet is folded to a proper position or a first form; by adopting the mode of curling, furling and pulling out, the damage to brain tissues can be further reduced. After the operation is finished, the device can be decomposed and disinfected for the next repeated use.
The "number of turns of curl" described in this embodiment is not limited to an integer. For example, the number of turns of the crimp may be 2.5 turns, meaning that the number of turns of the crimp is two and one half turns.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (4)
1. A craniocerebral lumen stepless adjustment expansion device, which is characterized in that: comprises an elastic expansion sheet; the expansion sheet has a first shape and a second shape under the limitation of external restraint, wherein the first shape is a multi-layer tightly curled cylinder shape, and the second shape is a curled cylinder shape; the number of coils of the second form is smaller than that of coils of the first form; the expansion sheet can be controlled to expand from a first shape to a second shape;
wherein the expansion sheet is of a rectangular lamellar elastic structure and has a thickness of 0.1 to 5 mm;
wherein the expansion sheet is of a single-layer metal or plastic structure or of a double-layer metal, plastic or metal/plastic composite structure; the metal is memory metal or alloy;
the craniocerebral cavity stepless adjustment expansion device further comprises:
the controller is used for restraining and limiting the shape of the expansion sheet, and the controller is L-shaped and comprises a fixing part and a handle part which are mutually perpendicular;
the fixing part is arranged along the outer side edge of the expansion sheet and comprises a strip-shaped outer side plate and an inner side plate which are consistent with the expansion sheet in height; the upper and lower ends of the outer side plate and the inner side plate are connected and closed, and a narrow slit is formed in the middle; the outer side edge of the expansion sheet is fixedly connected with the side edge of the outer side plate of the controller, and the outer ring or the outermost multiple rings of the expansion sheet pass through the narrow slit; the handle part is positioned at the upper end of the fixed part and is outwards arranged away from the expansion sheet along the direction perpendicular to the fixed part;
the expansion piece is provided with a strip-shaped bulge along the direction of the inner side edge, and the height of the bulge is larger than the width of the narrow slit of the fixing part;
wherein a through hole is arranged on the outer side plate of the controller, and a pressing block is arranged in the through hole; the pressing block can move in the through hole so as to press or release the expansion piece in the narrow slit of the fixing part; and
a sheath which is arranged in the cylindrical expansion piece, wherein a funnel-shaped syringe interface is arranged at the upper part of the sheath, and a sheath body with the same height as the expansion piece is coaxially arranged at the lower part of the sheath and the syringe interface; the diameter of the sheath body is consistent with the diameter of the cylinder inner space of the expansion sheet in the first form, and a through hole which is communicated with the injector interface and is vertically communicated is formed in the sheath body; a hard core is also arranged in the sheath;
the cross section of the bulge arranged at the inner side edge of the expansion sheet is of an inverted trapezoid structure with large outside and small inside, and the pipe sheath body of the pipe sheath is provided with a clamping groove matched with the bulge for use.
2. The craniocerebral lumen stepless adjustment expansion device of claim 1, wherein: the expansion sheet has a number of curls of 2 to 10 turns in the first configuration.
3. The craniocerebral lumen stepless adjustment expansion device of claim 1, wherein: the handle part is provided with an operating rod which is connected with the handle part through a rotating shaft in an X-shaped scissor-shaped structure; the operating end of the operating rod is arranged in parallel with the handle part, and the action end of the operating rod is contacted with the pressing block; by depressing or lifting the operating end of the operating lever, the operating end can be controlled to squeeze or release the press block.
4. The craniocerebral lumen stepless adjustment expansion device of claim 1, wherein: a vertical downward positioning bolt is arranged at the outer side of the syringe interface of the tube sheath; the handle part is provided with a positioning hole matched with the positioning bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211874.XA CN108451562B (en) | 2018-03-15 | 2018-03-15 | Stepless regulating and expanding device for craniocerebral lumen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810211874.XA CN108451562B (en) | 2018-03-15 | 2018-03-15 | Stepless regulating and expanding device for craniocerebral lumen |
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| CN108451562A CN108451562A (en) | 2018-08-28 |
| CN108451562B true CN108451562B (en) | 2023-10-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110478012B (en) * | 2019-09-18 | 2020-12-11 | 中国人民解放军陆军特色医学中心 | Uterus lifting device |
| CN111789642B (en) * | 2020-07-02 | 2023-06-20 | 泰升医疗有限公司 | Retractor assembly and retractor |
| CN112692125B (en) * | 2021-01-27 | 2022-06-17 | 广东中深塑科技有限公司 | High-efficient coiling mechanism is used in galvanized steel sheet production |
| CN115068022B (en) * | 2022-08-23 | 2024-05-07 | 中国人民解放军总医院第六医学中心 | Brain tissue expansion kit for craniocerebral operation |
| CN117653229B (en) * | 2023-05-25 | 2024-05-28 | 镇江恒生涓恩医疗器械有限公司 | Medical tube sheath with roller |
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| CN204246666U (en) * | 2014-11-10 | 2015-04-08 | 中国人民解放军第三军医大学第二附属医院 | A kind of medical operation sheath |
| WO2016084087A2 (en) * | 2014-11-26 | 2016-06-02 | S.T.S. Medical Ltd. | Shape change structure for treatment of nasal conditions including sinusitis |
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