CN114271879A - Retractor fixator for brain tissue - Google Patents
Retractor fixator for brain tissue Download PDFInfo
- Publication number
- CN114271879A CN114271879A CN202111600309.0A CN202111600309A CN114271879A CN 114271879 A CN114271879 A CN 114271879A CN 202111600309 A CN202111600309 A CN 202111600309A CN 114271879 A CN114271879 A CN 114271879A
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- China
- Prior art keywords
- inner sleeve
- endoscope
- brain tissue
- outer sheath
- sheath tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 210000005013 brain tissue Anatomy 0.000 title claims abstract description 38
- 230000000007 visual effect Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 230000002490 cerebral effect Effects 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000012800 visualization Methods 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000002513 implantation Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000003174 Brain Neoplasms Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The invention provides a retracting fixator for brain tissue, which belongs to the technical field of medical instruments and comprises: an outer sheath tube; the inner sleeve is detachably sleeved in the outer sheath tube and is provided with a conical part which penetrates out of the far end of the outer sheath tube; the connection part of the conical part and the outer sheath tube is in seamless connection, and the conical part is provided with a liquid passing hole for cerebral liquid to flow through; the endoscope is arranged in the inner sleeve, a visual window is arranged on the endoscope and the conical part in a relative mode, and the endoscope is used for searching a focus part through the visual window. In the process of placing the outer sheath tube, the conical part of the inner sleeve tube plays a guiding role and can uniformly disperse brain tissues so as to reduce the damage to the brain tissues; the endoscope realizes visual puncture and catheterization of the sheath tube, and is convenient for quickly finding a focus part; the endoscope is arranged in the inner sleeve, and after the outer sleeve is put in place, the inner sleeve and the endoscope can be conveniently taken out simultaneously.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a retracting fixator for brain tissue.
Background
In brain surgery, a neuronavigation system is generally used for determining a focus part and establishing a three-dimensional model in brain tumor surgery, but in actual surgery, deviation is often generated due to pressure change inside a brain or change of a patient position, so a preoperative scheme needs to be adjusted due to focus displacement, but large-scale search cannot be performed due to the particularity of brain tissues, and positioning is difficult.
Currently, brain tissue retractors are used to retract brain tissue, exposing diseased lesions to the field of view of a doctor; however, the retractor has the problem of unsatisfactory visual field in the process of implantation, and needs to be continuously adjusted in the process of searching for a focus, thereby increasing the difficulty of the operation.
Disclosure of Invention
Accordingly, the present invention provides a visualized brain tissue retraction holder.
In order to solve the above technical problem, the present invention provides a retracting fixture for brain tissue, comprising:
an outer sheath tube;
the inner sleeve is detachably sleeved in the outer sheath tube and is provided with a conical part which penetrates out of the far end of the outer sheath tube; the connection part of the conical part and the outer sheath tube is in seamless connection, and the conical part is provided with a liquid passing hole for cerebral liquid to flow through;
the endoscope is arranged in the inner sleeve, a visual window is arranged on the endoscope and the conical part in a relative mode, and the endoscope is used for searching a focus part through the visual window.
Further, the center of the visual window is positioned on the axis of the inner sleeve, and the endoscope can move and adjust towards and away from the visual window along the axial direction of the inner sleeve.
Further, the inner sleeve is internally provided with a guide channel arranged along the axial direction of the inner sleeve, and the endoscope is embedded into the guide channel in a damping mode.
Further, a damping ring is arranged on the inner wall of the guide channel, and the damping ring is in damping contact connection with the embedded part of the endoscope.
Further, the visual window is a through hole formed in the conical portion, and the through hole is overlapped with the liquid passing hole.
Further, the tip department of toper portion offers and passes the hole with outside intercommunication, but the visual window is established for the lid lens on passing the hole, lens are towards the orientation that deviates from the arch-shaped structure of toper portion's direction.
Furthermore, scales distributed along the length direction of the outer sheath tube are arranged on the tube wall of the outer sheath tube.
Further, the distal end of the outer sheath has a tapered transition surface.
Further, the outer wall of the outer sheath tube and the tapered part of the inner sleeve tube are provided with lubricating hydrophobic coatings.
Further, a handle is arranged at the near end of the outer sheath tube, and a locking hole is formed in the handle;
the near end of the inner sleeve is provided with a lock catch, and the inner sleeve is detachably locked in the locking hole through the lock catch.
The technical scheme of the invention has the following advantages:
1. according to the retractor fixator for the brain tissue, in the process of placing the outer sheath tube, the conical part of the inner sleeve tube plays a guiding role and can uniformly disperse the brain tissue so as to reduce the damage to the brain tissue; the endoscope realizes visual puncture and catheterization of the sheath tube, and is convenient for quickly finding a focus part; the endoscope is arranged in the inner sleeve, and after the outer sleeve is put in place, the inner sleeve and the endoscope can be conveniently taken out simultaneously.
2. According to the retractor fixer for brain tissue, the endoscope can move and adjust along the axial direction of the inner sleeve to adjust the focal length of the endoscope so as to focus the endoscope, and the endoscope can find a focus position quickly.
3. The invention provides a retracting fixer for brain tissue, which is provided with a lens and is used for further enlarging the visual field of an endoscope.
4. According to the retractor fixator for brain tissue, the conical transition surface at the far end of the outer sheath tube is used for reducing damage to the brain tissue in the implantation process.
5. The retractor fixer for the brain tissue, provided by the invention, has the advantages that the arrangement of the lubricating and hydrophobic coating enables the tube placement to be easier, and the phenomenon that the brain tissue is adhered to the outer sheath tube and the conical part of the inner sleeve tube to cause the visual field of the endoscope to be limited 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 used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a retractor holder according to the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic structural view of the inner tube housing.
Fig. 4 is another structural view of the inner tube housing.
Fig. 5 is a schematic view of the tapered portion of the inner sleeve of fig. 4.
Description of reference numerals:
1. an outer sheath tube; 2. an inner sleeve; 3. an endoscope; 4. a tapered portion; 5. a liquid passing hole; 6. a visual window; 7. a handle; 8. locking; 9. a guide channel; 10. a damping ring; 11. a transition surface; 12. and locking the screw rod.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
The retractor fixator for brain tissue provided in this embodiment comprises: an outer sheath tube 1, an inner tube 2, and an endoscope 3.
As shown in fig. 1 and 2, the inner sleeve 2 is detachably sleeved in the outer sheath 1, and the inner sleeve 2 has a tapered portion 4 for penetrating out of the distal end of the outer sheath 1. The conical part 4 is suitable for being in seamless sleeve joint with the outer sheath tube 1, and a liquid passing hole 5 for cerebral liquid to flow is formed in the conical part 4. The endoscope 3 is arranged in the inner sleeve 2, a visual window 6 is arranged on the endoscope 3 and the conical part 4 in a relative mode, and the endoscope 3 is used for searching a focus through the visual window 6.
In the embodiment, during the process of placing the outer sheath tube 1, the conical part 4 of the inner sleeve tube 2 plays a guiding role and can uniformly disperse the brain tissue so as to reduce the damage to the brain tissue; the endoscope 3 is arranged to realize visual puncture and catheterization, so that focus parts can be found conveniently and quickly; the endoscope 3 is arranged in the inner sleeve 2, and after the outer sheath 1 is put in place, the inner sleeve 2 and the endoscope 3 can be taken out simultaneously.
As shown in fig. 1 and 2, the cross section of the sheath tube 1 is a circular structure, or an elliptical structure may be selected; the sheath tube 1 can uniformly disperse the brain tissue in the process of placing the sheath tube, and the brain tissue is prevented from being damaged due to stress concentration. A handle 7 is arranged at the near end of the outer sheath tube 1, and the handle 7 is of a bending structure; the handle 7 is provided with a first end face which is flush with the proximal end face of the outer sheath tube 1 and a second end face which is higher than the proximal end face of the outer sheath tube 1, the first end face of the handle 7 is provided with a locking hole for connecting with the inner sleeve 2, and the second end face of the handle 7 is provided with a long hole for fixing the outer sheath tube 1. The near end of the inner sleeve 2 is provided with a lock catch 8, and the inner sleeve 2 is detachably locked in the locking hole through the lock catch 8.
As shown in fig. 3, the inner tube 2 has an insertion portion for being fitted inside the outer sheath 1 and a tapered portion 4 for passing through the distal end of the outer sheath 1, and the outer diameter of the insertion portion of the inner tube 2 is adapted to be in seamless fit with the inner diameter of the outer sheath 1. The conical part 4 is provided with a liquid passing hole 5 for cerebral liquid to flow through, the center of the liquid passing hole 5 is positioned on the axis of the inner sleeve 2, and the liquid passing hole 5 also serves as a visual window 6. The inner sleeve 2 is internally provided with a guide channel 9 arranged along the axial direction of the inner sleeve, and the inner wall of the guide channel 9 is provided with a damping ring 10; one end of the endoscope 3 is embedded in the guide channel 9 and is connected with the damping ring 10 in a damping contact mode, and the endoscope 3 can move along the guide channel 9 and can be locked at any position. The endoscope 3 and the visual window 6 are coaxially arranged, and the endoscope 3 searches a focus part through the visual window 6; by moving the endoscope 3 in the axial direction, the focal length of the endoscope 3 is adjusted to focus the focus, which is helpful for the endoscope to quickly find the focus.
As an alternative embodiment, the guiding channel 9 has a protruding portion protruding out of the proximal end of the inner sleeve 2, and the protruding portion of the guiding channel 9 is provided with a threaded hole, and the locking screw 12 passes through the threaded hole to tighten and lock the endoscope 3 in its axial position.
In this embodiment, the wall of the sheath tube 1 has scales distributed along the length direction thereof, so as to facilitate observation of the insertion depth of the sheath tube 1.
In this embodiment, the distal end of the sheath 1 has a tapered transition surface 11 to minimize damage to brain tissue during implantation.
In the present embodiment, the outer wall of the outer sheath 1 and the tapered portion 4 of the inner sleeve 2 both have a lubricating hydrophobic coating; during the implantation, the brain tissue is prevented from adhering to the outer sheath 1 and the tapered portion 4 of the inner sheath 2, so that the visual field of the endoscope 3 is limited.
Example two
The retracting fixator for brain tissue provided in this embodiment is consistent with the embodiments except that the positions and structures of the visible window 6 and the liquid passing hole 5 are changed.
As shown in fig. 4 and 5, a through hole communicated with the outside is formed at the tip of the conical part 4, the visible window 6 is a lens covered on the through hole, the through hole is oval, and the lens is in an arc structure arched in the direction away from the conical part 4. In use, the endoscope 3 is attached to a lens, and the field of view of the endoscope 3 is further enlarged by the lens. In addition, the lens also plays a further role in guiding. The inner sleeve 2 is provided with a plurality of liquid passing holes 5 which are uniformly distributed on the side surface of the conical part 4.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A retracting fixture for brain tissue, comprising:
an outer sheath tube (1);
the inner sleeve (2) is detachably sleeved in the outer sheath tube (1), and the inner sleeve (2) is provided with a conical part (4) which penetrates out of the far end of the outer sheath tube (1); the connection part of the conical part (4) and the outer sheath tube (1) is in seamless connection, and a liquid passing hole (5) for cerebral liquid to flow is formed in the conical part (4);
the endoscope (3) is arranged in the inner sleeve (2), a visual window (6) is formed in the endoscope (3) and the conical part (4) and is arranged oppositely, and the endoscope (3) is used for searching a focus part through the visual window (6).
2. Retracting fixture for brain tissue according to claim 1, characterized in that the centre of the visualization window (6) is located on the axis of the inner sleeve (2), the endoscope (3) being movably adjustable in the direction of the axis of the inner sleeve (2) towards and away from the visualization window (6).
3. Retracting fixture for brain tissue according to claim 2, characterized in that said inner sleeve (2) has a guide channel (9) arranged along its axis, said endoscope (3) having a damped embedding in said guide channel (9).
4. Retracting fixture for brain tissue according to claim 3, characterized in that the guide channel (9) has on its inner wall a damping ring (10), the damping ring (10) being in damped contact connection with the embedding part of the endoscope (3).
5. Retracting fixation for brain tissue according to claim 2, characterized in that said visualization window (6) is a through hole made on said conical portion (4) coinciding with said through liquid hole (5).
6. Retracting fixator for brain tissue according to claim 2, characterized in that the conical part (4) opens at its tip a through hole communicating with the outside, the viewing window (6) being a lens placed over the through hole, the lens being of an arc-shaped configuration arched in a direction away from the conical part (4).
7. Retracting fixation for brain tissue according to claim 1, characterized in that the wall of the sheath (1) has graduations distributed along its length.
8. Retracting fixation for brain tissue according to claim 1, characterized in that the distal end of the sheath (1) has a conical transition surface (11).
9. Retracting fixture for brain tissue according to claim 1, characterized in that both on the outer wall of the outer sheath (1) and on the tapered part (4) of the inner sleeve (2) have a lubricious hydrophobic coating.
10. Retracting fixation for brain tissue according to claim 1, characterized in that the proximal end of the sheath (1) is provided with a handle (7), said handle (7) being provided with a locking hole;
the near end of the inner sleeve (2) is provided with a lock catch (8), and the inner sleeve (2) is detachably locked in the locking hole through the lock catch (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111600309.0A CN114271879A (en) | 2021-12-24 | 2021-12-24 | Retractor fixator for brain tissue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111600309.0A CN114271879A (en) | 2021-12-24 | 2021-12-24 | Retractor fixator for brain tissue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114271879A true CN114271879A (en) | 2022-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111600309.0A Pending CN114271879A (en) | 2021-12-24 | 2021-12-24 | Retractor fixator for brain tissue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114271879A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443484A (en) * | 1992-06-16 | 1995-08-22 | Loma Linda University Medical Center | Trocar and method for endoscopic surgery |
| US20100063356A1 (en) * | 2007-01-03 | 2010-03-11 | Smith Robert C | Access sheath with removable optical penetrating member |
| US20120253375A1 (en) * | 2004-10-28 | 2012-10-04 | Mark Joseph L | Surgical access assembly and method of using same |
| CN108814664A (en) * | 2018-09-07 | 2018-11-16 | 中国人民解放军陆军军医大学第附属医院 | A kind of cranium brain deep operation clear tubular retractor |
| CN109394282A (en) * | 2018-07-02 | 2019-03-01 | 江苏海莱新创医疗科技有限公司 | Operation traction sting device |
-
2021
- 2021-12-24 CN CN202111600309.0A patent/CN114271879A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443484A (en) * | 1992-06-16 | 1995-08-22 | Loma Linda University Medical Center | Trocar and method for endoscopic surgery |
| US20120253375A1 (en) * | 2004-10-28 | 2012-10-04 | Mark Joseph L | Surgical access assembly and method of using same |
| US20190117254A1 (en) * | 2004-10-28 | 2019-04-25 | Nico Corporation | Surgical access assembly and method of using same |
| US20100063356A1 (en) * | 2007-01-03 | 2010-03-11 | Smith Robert C | Access sheath with removable optical penetrating member |
| CN109394282A (en) * | 2018-07-02 | 2019-03-01 | 江苏海莱新创医疗科技有限公司 | Operation traction sting device |
| CN108814664A (en) * | 2018-09-07 | 2018-11-16 | 中国人民解放军陆军军医大学第附属医院 | A kind of cranium brain deep operation clear tubular retractor |
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