CN214907434U

CN214907434U - Disposable craniocerebral retractor fixator

Info

Publication number: CN214907434U
Application number: CN202120274146.0U
Authority: CN
Inventors: 吴志敏; 李俊
Original assignee: Central Hospital of Wuhan
Current assignee: Central Hospital of Wuhan
Priority date: 2021-01-31
Filing date: 2021-01-31
Publication date: 2021-11-30
Anticipated expiration: 2031-01-31

Abstract

The utility model belongs to the technical field of neurosurgery, in particular to a disposable craniocerebral retraction fixer, which comprises a guider and a retractor, wherein the guider is funnel-shaped and has openings at two ends, and comprises a funnel part and a guide pipe part at the bottom of the funnel, the guider is formed by splicing at least two guide plates in pairs, and the guide plates are connected through an elastic material; the retractor comprises a retractor body which is a columnar structure with a hollow interior; when the retractor is used, the retractor is inserted into the guide, and the guide is radially and outwards spread by using the elasticity of the elastic material between the guide plates. The utility model provides a disposable craniocerebral retractor fixer is safe and convenient to operate, can effectively reduce normal brain tissue damage in the art, has minimal invasion, shortens the operation time greatly, reduces the risk of postoperative infection comprehensively.

Description

Disposable craniocerebral retractor fixator

Technical Field

The utility model belongs to the technical field of neurosurgery, more specifically relates to a disposable craniocerebral retractor fixer.

Background

Neurosurgery craniotomy, especially involve the operation of cranium brain deep pathological change, the narrow and small and operation position in field of vision that the operator need see usually is darker, and the operator need just can see clearly whether the concrete structure and the operation position of operation position bleed with the help of microscope or scope, needs the good cooperation of assistant this moment, and retractor brain tissue through brain clamp plate etc. helps the operator to open the field of vision, sees the concrete condition at operation position clearly, is favorable to the safety of operation to go on. The craniocerebral retractor fixator or the brain pressing plate which is commonly used in craniotomy is generally used for retracting brain tissues and exposing hematoma or tumor tissues when intracerebral hematoma is cleared or deep tumors in the brain and intracerebral tumor resection are carried out.

The current retractor fixator is mostly a flexible shaft self-holding retractor fixator, the retractor fixator has high requirements on an operating table when in use, is complex in structure, time-consuming in installation, expensive in price, large in occupied space, reduces the operating space of an operator, is not beneficial to the operation in the operation of the operator, particularly to the operation of removing intracerebral hematoma, and the operator is often reluctant to use the retractor which is complex. Moreover, most of the existing simple retractor fixing devices are also provided with adjusting bolts or screws to expand the retractor, but in the actual operation process, the space of the operation is narrow, the small device is extremely inconvenient to adjust, and once the small device falls into an operation channel, unnecessary troubles are caused to an operator.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a disposable craniocerebral retractor fixator, aiming at solving the problems that the operation of adjusting bolts or screws is inconvenient, and the falling of the bolts or screws in the operation easily increases the operation risk in the retractor fixator.

In order to achieve the above object, the utility model provides a disposable craniocerebral retraction fixer, including director and retractor, wherein:

the guide device is funnel-shaped, has two open ends and comprises a funnel part and a guide pipe part at the bottom of the funnel; the guide device is formed by splicing at least two guide plates in pairs, and the guide plates are connected through an elastic material; the cross-sectional area of the funnel part of the guide is larger than that of the guide pipe part;

the retractor comprises a retractor body which is a columnar structure with a hollow interior; the retractor body has a cross-sectional area less than the cross-sectional area of the opening of the funnel portion of the introducer at the end remote from the guide tube portion of the introducer;

in use, the retractor is inserted from the funnel portion of the introducer and into the portion of the introducer bottom guide tube of the introducer, and the elasticity of the resilient material is used to spread the introducer.

Preferably, the guide is circular in cross-section and the retractor body is circular in cross-section.

Further preferably, the at least two guide plates are identical in shape and size and are evenly distributed around the guide central axis.

Preferably, the outer walls of the guide and the retractor body are provided with scale marks, and the scale marks start from an opening at one end of the guide or the retractor body away from the funnel part of the guide.

Preferably, the material of the guide plate is a transparent plastic material.

Further preferably, the elastic material is a transparent rubber film.

Further preferably, the retractor is made of transparent plastic material.

Preferably, an opening of the retractor body, which is close to one end of the funnel part of the guider, is provided with a black light absorption coating.

Preferably, the retractor further comprises a handle fixedly arranged on the outer wall of the retractor body close to the funnel part of the guide.

Preferably, the handle is located on a plane of the cross-section of the retractor body.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

(1) the utility model provides a disposable craniocerebral retractor fixer, simple structure, convenient operation. Before the retractor is used, retractors with different inner diameters can be prepared according to operation requirements, when the retractor is used, the retractor is inserted into the guide pipe part of the guide through the opening at one end of the funnel part of the guide, the inner diameter of the guide is expanded to a proper range by utilizing the elasticity of elastic materials between the guide plates, and the retractor is not required to be expanded by using an adjusting bolt or a screw, so that the problem that the difficulty and the risk of the operation are increased due to the fact that the bolt or the screw accidentally falls into an operation channel in the operation is solved.

(2) The utility model provides a lead the ware in the retractor fixer and enclose into by two liang of concatenations of at least two guide plates and leak hopper-shaped, link to each other by elastic material between the guide plate, when putting into the brain tissue, can needn't do great brain tissue fistulization mouth, reduce unnecessary brain damage, when expanding equally, be through inserting the retractor in the ware, utilize guide plate interblock elastic material's elasticity to make the guide plate along radial outside even expansion, can not exert too much pressure to a certain direction, lead to normal brain tissue atress inhomogeneous around, cause unnecessary brain tissue damage.

(3) The utility model provides a lead out fixer utilizes the elastic material of director guide board interblock for the director after the expansion closely supports through the squeezing action with the retractor and holds, and the director can not slide at will, thereby needn't extract the director in the operation, reduces the unnecessary operation, practices thrift operating time.

(4) The utility model provides a lead ware and the retractor outer wall of leading out the fixer all have the scale sign, and the art person can be accurate the wild degree of depth of judgement operation to accurate aassessment operation safety range.

(5) The utility model provides a lead out fixer adopts transparent material, has improved the visibility of art person to leading out the fixer surrounding tissue, has created the operation passageway and the clear field of vision that get into the deep of brain tissue for art person.

(6) The utility model discloses lead out the fixer and can effectively reduce normal brain tissue damage in the art, compare traditional retractor device and more have the wicresoft nature, shorten the operation time, reduce the risk of postoperative infection comprehensively, be favorable to the patient's state of an illness to resume as early as possible.

Drawings

Fig. 1 is a schematic structural view of a guide in a disposable craniocerebral retraction fixator provided by the present invention;

FIG. 2 is a schematic structural view of a retractor in the disposable craniocerebral retraction fixator provided by the present invention;

the same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:

1-a guide, 11-a guide plate, 12-an elastic material; 2-retractor, 21-retractor body, 22-handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, the present invention provides a disposable craniocerebral retraction fixator, which comprises a guide 1 and a retractor 2. The introducer 1 is used to penetrate to the lesion of the brain tissue. The retractor 2 is used for inserting the guide 1 to retract brain tissue, facilitating the operation of deep craniocerebral lesions.

Referring to fig. 1, the guide 1 is funnel-shaped and has two open ends, and includes a funnel portion and a guide tube portion at the bottom of the funnel; the guider 1 is formed by splicing at least two guiding plate blocks 11 in pairs, the guiding plate blocks 11 are of an integral structure, one ends of the guiding plate blocks are spliced to form a guiding pipe part of the guider 1 and used for being placed into brain tissues, the other ends of the guiding plate blocks are spliced to form a funnel part of the guider 1, the cross sectional area of the funnel part is larger than that of the guiding pipe part, and a brain puncture needle and the retractor 2 can be inserted into the guider 1 conveniently. The number of the guide plates 11 can be two, three (as shown in fig. 1), four, five or six, and the like, and the guide plates can be arc-shaped or integrally processed and manufactured by two plates with a certain included angle; the guide plates are connected to each other by means of an elastic material 12 so that the guide 1 can expand radially outwards.

Referring to fig. 2, the retractor 2 includes a retractor body 21, the retractor body 21 is a hollow annular column, and in an actual operation, retractors with different inner diameters can be prepared, and the inner diameter of the operation channel can be adjusted in time as required. Preferably, the retractor 2 further includes a handle 22, and the handle 22 is fixedly disposed on an outer wall of the retractor body 21 at an end away from the brain tissue, and may be located on one side of the retractor body 21 or may be disposed around a radial periphery of the retractor body 21. The handle 22 is designed to enable the operator to easily stabilize the retractor 2 after it is inserted into the brain tissue, thereby avoiding accidental movement of the retractor holder during surgery and reducing the damage to the brain of the patient to a lower level.

Furthermore, the cross-sectional area of the retractor body 21 is smaller than the cross-sectional area of the opening of the end of the guide 1 away from the brain tissue (i.e. the end of the guide 1 where the funnel portion is away from the guide tube portion), so that the retractor 2 can be inserted into the guide 1 through the opening of the end of the guide 1 away from the brain tissue, and even if the retractor 2 is inserted from the funnel portion of the guide 1 and into the guide tube portion of the guide 1, the inner wall of the guide 1 can be spread by the elastic action of the elastic material 12 between the guide plates 11 of the guide 1.

As a preferred embodiment, the cross section of the guide 1 is circular, the cross section of the retractor body 21 is also circular, the shape and size of each guide plate 11 are the same, and the guide plates are uniformly distributed around the central axis of the guide 1, so that after the retractor 2 is inserted into the guide 1, the guide 1 can uniformly and narrowly expand to the periphery by using the elastic material 12 between the guide plates 11, thereby avoiding the manufacture of a large stoma, and the circular shape can uniformly disperse the pressure of the retractor fixator on the brain tissue on the peripheral brain tissue, thereby avoiding the retraction force concentrated on the brain tissue in one direction.

As a preferred embodiment, the outer walls of the guide 1 and the retractor body 21 are provided with scale marks, and the scale marks start from the opening of the end of the guide 1 or the retractor body 21 away from the funnel portion of the guide 1 (i.e. the end used for placing into the brain tissue), so that the operator can accurately judge the insertion depth of the retractor fixator during the operation, and the operator can clearly assess the operation safety range.

As a preferred embodiment, the guide plate 11 and the elastic material 12 of the guide 1 are made of transparent materials with good toughness. The guide plate 11 is made of transparent plastic material, such as polymethyl methacrylate (PMMA, also called organic glass) or Polyoxymethylene (POM), which has good toughness and wear resistance, high hardness, and high transparency. The elastic material 12 is a transparent rubber film, such as a film made of natural rubber, butadiene rubber, butyl rubber, silicone rubber, etc., and has good elasticity. Thus, the visibility of the operator to normal brain tissue around the retracting fixator is improved while a good retracting effect is achieved. More preferably, the retractor 2 is also made of transparent plastic material.

As a preferred embodiment, the opening of the retractor body 21 far away from the brain tissue is provided with a black light absorption coating which is coated into black at the entrance of the operation channel, so that the black light irradiated on the instrument can be absorbed, the discomfort of the eyes of the operator in the operation process is reduced, and the smooth operation is facilitated.

As a preferred embodiment, the handle 22 is located in the plane of the radial cross-section of the retractor body 21, making it easier for the operator to manipulate the retractor during the operation.

The utility model discloses it is safe convenient when pulling out fixer and using, and concrete application method does: before use, an operator determines the approximate area of intracranial hematoma according to the patient craniocerebral CT or MR film and clinical experience, inserts a brain puncture needle into a prepositioning area, extracts liquid in the brain puncture needle by using a syringe connecting hose, and positions correctly if blood is extracted, or positions incorrectly if blood is extracted, and needs to be repositioned. After the positioning is finished, a fistulization opening is slightly enlarged on brain tissue along the periphery of a brain puncture needle by using a suction apparatus, a guide pipe part of a guide apparatus is inserted into a hematoma cavity along the brain puncture needle, then the brain puncture needle is withdrawn from the brain tissue, retractors with different inner diameters are selected according to operation requirements, a handle of the retractor is held by hands, the retractor is inserted into an operation part along an opening at one end of a funnel part of the guide apparatus, the inner diameter of the guide apparatus is enlarged to a proper range by using the elasticity of elastic rubber between guide plate blocks, and finally an operator finishes the operation through a channel retracted by a retractor fixing apparatus.

The utility model provides a disposable retraction fixer with reasonable structure, simple operation, strong practicability and low price for the craniotomy of neurosurgery, provides a transparent and safe large channel for the operator and simultaneously accurately exposes the operation part, and separates the lesion of the operation part from the surrounding normal brain tissue to reduce the possibility of damaging the normal brain tissue; creating an operation channel and a clear visual field for an operator to enter the deep part of the brain tissue by using a surgical instrument; the problems of poor operative field, easy damage to normal brain tissues and the like in the craniocerebral operation are solved, and the operation efficiency is greatly improved; has the advantages of having minimal invasion, shortening the operation time, comprehensively reducing the threat of postoperative infection and providing help for the patient to wake up and recover as soon as possible.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. A disposable craniocerebral retraction fixator, characterized by comprising an introducer (1) and a retractor (2), wherein:

the guide device (1) is funnel-shaped, has two open ends and comprises a funnel part and a guide pipe part at the bottom of the funnel; the guide device (1) is formed by splicing at least two guide plates (11) in pairs to form a surrounding mode, and the guide plates (11) are connected through an elastic material (12); the cross-sectional area of the funnel part of the guide (1) is larger than that of the guide pipe part;

the retractor (2) comprises a retractor body (21), and the retractor body (21) is a columnar structure with a hollow interior; the cross-sectional area of the retractor body (21) is smaller than the cross-sectional area of the opening of the funnel part of the guide (1) at the end far away from the guide pipe part of the guide;

in use, the retractor (2) is inserted from the funnel part of the introducer (1) and into the guide tube part at the bottom of the funnel of the introducer (1), and the introducer (1) is stretched out by the elasticity of the elastic material (12).

2. The disposable craniocerebral retraction fixation device of claim 1 wherein: the cross section of the guider (1) is circular, and the cross section of the retractor body (21) is circular.

3. A disposable craniocerebral retraction fixation as claimed in claim 1 or 2 wherein: the at least two guide plates (11) are identical in shape and size and are evenly distributed around the central axis of the guide (1).

4. The disposable craniocerebral retraction fixation device of claim 1 wherein: the outer walls of the guider (1) and the retractor body (21) are provided with scale marks, and the scale marks are started from an opening at one end of the guider (1) or the retractor body (21), which is far away from the funnel part of the guider (1).

5. The disposable craniocerebral retraction fixation device of claim 1 wherein: the material of guide plate (11) is transparent plastic material.

6. The disposable craniocerebral retraction fixation device of claim 1 wherein: the elastic material (12) is a transparent rubber film.

7. The disposable craniocerebral retraction fixation device of claim 1 wherein: the retractor (2) is made of transparent plastic materials.

8. The disposable craniocerebral retraction fixation device of claim 1 wherein: an opening of the retractor body (21) close to one end of the funnel part of the guider (1) is provided with a black light absorption coating.

9. The disposable craniocerebral retraction fixation device of claim 1 wherein: the retractor (2) further comprises a handle (22), and the handle (22) is fixedly arranged on the outer wall of the retractor body (21) close to the funnel part of the guider (1).

10. The disposable craniocerebral retraction holder of claim 9, wherein: the handle (22) is located on the plane of the cross section of the retractor body (21).