CN216724631U - Visual deep brain operation puncture drainage retraction guide catheter - Google Patents

Abstract

The utility model discloses a visual deep brain surgery puncture drainage retraction guide catheter, which comprises a guide catheter, an inner sleeve and a retractor, wherein the inner sleeve is sleeved on the guide catheter in a matching manner, and an upper limiting table and a lower limiting table which are used for supporting the retractor in a matching manner are arranged on the inner sleeve; one part of the cambered surface of the retractor extends upwards to form an extension connecting section, a handle is installed through the extension connecting section, the upper limiting table of the inner sleeve is tangent to the inner wall of the wide opening end of the conical retractor to form a support, and the lower limiting table of the inner sleeve is tangent to the inner wall of the narrow opening end of the conical retractor to form a support. The retractor is placed in a way that the retractor air bag is matched with the inner sleeve and the retractor, so that the possibility of damage to brain tissues in the retracting and placing process is avoided to the maximum extent, the retractor is limited by the upper limiting table and the lower limiting table arranged on the inner sleeve, the stability of placing the retractor is improved, the difficulty of operation is reduced, and the safety of the operation is improved.

Description

Visual deep brain operation puncture drainage retraction guide catheter

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a visual deep brain surgery puncture drainage retraction guide catheter.

Background

The operation of hypertensive cerebral hemorrhage is divided into two types, one is hematoma cavity puncture drainage, and the other is craniotomy hematoma removal. The transcranial puncture drilling-twisting-breaking hematoma aspiration and removal operation is a blind puncture operation for removing a hematoma part and a drainage tube implantation operation, and the whole process is a non-direct-view operation, so that brain tissues and adjacent blood vessels are easily damaged, and fatal bleeding can be caused in the case of blood vessel deformity and the like, and the bleeding cannot be effectively stopped. However, the traditional craniotomy needs manual operation by using a retractor, for example, unskilled high-age physicians have the problems of difficulty in maintaining operative fields, instability and even accidental injury to surrounding normal brain tissues and blood vessels.

The structure of the head end of the retractor cannot be observed in the process of inserting the retractor in the past, and important blood vessels and tissues can be damaged in the process of inserting the retractor. When treating deep brain lesion under direct vision, the former retractor draws brain tissue by a metal sheet, and has great damage to surrounding tissue. When treating deep brain lesions, such as cerebral hemorrhage operation treatment, the traditional method is to firstly puncture hematoma through a brain puncture needle, suction is confirmed in a hematoma cavity, the brain puncture needle is pulled out after suction and decompression, then a retraction device is arranged according to the puncture direction of the brain puncture needle, and the chance of deviating from the hematoma cavity is larger when the retraction device is arranged again at present.

The applicant previously filed a patent No. CN213552031U, a visual puncture retraction guide catheter retractor, which is characterized in that a retraction balloon is mounted on a probe to expand brain tissue so as to facilitate implantation of the retractor, and prevent damage to the brain tissue, a visual system is mounted on the probe, and an operator can observe the tissue structure in front of the retractor in the retractor implanting process through the visual system mounted on the probe, so as to prevent damage to important blood vessels and tissues in the retractor implanting process.

However, with the application in actual surgery, the applicant has found a problem that the size of the retractor is larger than that of the probe, and when the retractor is placed, the retractor is easy to shake and unstable in the placing process after being separated from the end of the probe and lacks a support for supporting and fixing; the lack of the excess between the handle of the retractor and the sleeve of the retractor is easy to cause the skin to be blocked on the handle to influence the operation during the operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a visual deep brain surgery puncture drainage retraction guide catheter which utilizes an inner sleeve to support a retractor and simultaneously extends an extension connecting section with the same taper as that of the sleeve of the retractor on the retractor, aiming at the problems that the existing retractor lacks a support for supporting and fixing and is easy to shake and unstable and skin is easy to clamp on a handle during surgery to influence the surgery operation.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a visual deep brain surgery puncture drainage retraction guide catheter comprises a guide catheter, an inner sleeve and a retractor, wherein the guide catheter is sleeved with the inner sleeve, the retractor is sleeved on the inner sleeve in a matching mode, the guide catheter is divided into a probing end and a connection end, the connection end is divided into three joints which are respectively a suction pipe joint, a puncture needle joint and a balloon filling joint, the interior of the guide catheter is longitudinally divided into three chambers which are respectively a suction pipe, a puncture needle mounting chamber and a flow guide chamber, the suction pipe joint is communicated with the suction pipe, the suction pipe extends to the probing end of the guide catheter, a suction hole is formed in the side face of the probing end, the puncture needle joint is communicated with the puncture needle mounting chamber, the puncture needle mounting chamber penetrates through the guide catheter, and the balloon filling joint is communicated with the flow guide chamber; the outer side of the tube body of the guide catheter close to the probing end is hermetically surrounded with a retracting air bag, the flow guide cavity at least extends over the upper side of the retracting air bag, an air bag filling hole is arranged between the flow guide cavity and the retracting air bag, the flow guide cavity is communicated with the retracting air bag through the air bag filling hole, and the retracting air bag is cylindrical after being filled and expanded;

the inner sleeve is sleeved on the guide catheter in a matching way, and the inner sleeve is provided with an upper limiting table and a lower limiting table which are used for supporting the retractor in a matching way; the retractor is the toper structure, and the partly upwards extension of retractor cambered surface forms the extension linkage segment, through extension linkage segment installation handle, the tangent formation support that forms of the inner wall of interior sheathed tube last spacing platform and toper retractor wide mouth end, the tangent formation support that forms of the inner wall of interior sheathed tube lower spacing platform and toper retractor narrow mouth end.

The utility model further provides a visual deep brain operation puncture drainage retraction guide catheter, wherein the retractor is made of a hollow transparent conical sleeve, and scales are arranged on the hollow transparent conical sleeve.

The utility model further provides a visual deep brain operation puncture drainage retraction guide catheter, and scales arranged on the retractor are arranged in the conical casing wall.

The utility model further provides a visual deep brain operation puncture drainage retraction guide catheter, the size of an upper limiting table is matched with the inner diameter of an upper port of a retractor in the radial direction, the size of a lower limiting table is matched with the inner diameter of a lower port of the retractor, a lower limiting table of an inner sleeve is arranged at the lower end of the inner sleeve and used as a head end of the inner sleeve which extends into brain tissue, and the lower limiting table is in an approximately conical shape.

The utility model further provides a visual deep brain operation puncture drainage retraction guide catheter, wherein the guide catheter, the inner sleeve and the retractor are all made of transparent medical pvc plastics.

The utility model further provides a visual deep brain surgery puncture drainage retraction guide catheter, wherein a metal component is pre-embedded on the inner wall of the retractor, and the metal component is laid along the inner wall of the retractor, the extension connecting section and the handle.

The utility model further provides a visual deep brain surgery puncture drainage retraction guide catheter, wherein the catheter body of the guide catheter is oval, the inner cavity of the inner sleeve is oval, and the inner sleeve is sleeved on the oval catheter body of the guide catheter.

The utility model further provides a visual brain deep operation puncture drainage retraction guide catheter, a puncture needle comprises a needle core and a drainage tube, the needle core is sleeved in the drainage tube, the needle core comprises an optical fiber rod and a camera, the optical fiber rod is sleeved in the drainage tube, the end part of the optical fiber rod is provided with the camera, the camera comprises a lens, a protective cover and a sleeve, the protective cover is a transparent cylindrical shell, the head end of the protective cover is in an arc shape, the rear end of the protective cover is matched with the lens, the protective cover is arranged in front of the lens and used for protecting the lens, and the sleeve is sleeved outside the lens and the protective cover and used for fixing the connecting part of the protective cover and the lens.

The utility model further provides a visual brain deep operation puncture drainage retraction guide catheter, wherein the probing end of the drainage tube is inwards closed to form an inner blocking platform, the blocking platform formed on the upper sleeve of the camera is abutted against the inner blocking platform of the drainage tube for limiting, and the arc-shaped head end of the protective cover extends out of the drainage tube.

The utility model further provides a visual deep brain operation puncture drainage retraction guide catheter, and a light source is arranged around the lens.

The utility model has the advantages of

The traction force of the brain tissue is balanced and stable through the retracting air bag, the control is convenient, a cylindrical brain tissue tunnel is formed, and the cylindrical retracting instrument is conveniently placed in the brain tissue tunnel. Through the mode that adopts the matching suit between guide catheter, interior sleeve pipe and the retractor, and the suit relation between the three is inseparable relatively, is difficult to appear the condition of rocking, and the fail safe nature of the operation of effectual assurance further improves operation efficiency.

The retractor is placed in a matched mode between the retracting air bag and the inner sleeve and between the retracting air bag and the retractor, the possibility of damage to brain tissues in the retracting and placing process is avoided to the maximum extent, meanwhile, the diameter of the channel in the inner sleeve is consistent with the outer diameter of the guide catheter, and the structure can enable the inner sleeve to be placed in to a target position along the puncture guide catheter, so that deviation is avoided. The upper limiting table and the lower limiting table arranged on the inner sleeve limit the retractor, so that the stability of the retractor is improved, the difficulty of operation is reduced, and the safety of the operation is improved.

A part of the cambered surface of the conical retractor extends upwards to form an extension connecting section, a handle is installed through the extension connecting section, the taper of the extension connecting section is the same as that of the retractor pipe body part, the structure can prevent skin from being clamped on the handle during operation, and the skin can also be properly extended and placed when the placement depth is not enough so as not to damage brain tissues.

Drawings

Fig. 1 is a schematic perspective view of the present application.

Fig. 2 is a schematic view of the overall structure of the present application.

Fig. 3 is a schematic view of the external structure of the guiding catheter of the present application.

Fig. 4 is a schematic cross-sectional view of a guiding catheter according to the present application.

Fig. 5 is a cross-sectional structural view of the inner sleeve of the present application.

Figure 6 is a schematic view of a multi-angle configuration of a retractor of the present application.

Figure 7 is a schematic view of the configuration of the guide catheter, inner cannula and retractor mating set of the present application.

Fig. 8 is a schematic cross-sectional view of a circular guide catheter of the present application.

Fig. 9 is a schematic cross-sectional view of an oblate guide catheter of the present application.

Fig. 10 is an enlarged schematic view of a portion a in fig. 4.

Figure 11 is a cross-sectional view of a retractor with a metal member installed.

Fig. 12 is an enlarged partial cross-sectional view of the needle tip of the portion B of fig. 4.

Fig. 13 shows the construction and mounting of the needle tip.

Fig. 14 is a perspective view of another inner sleeve.

Fig. 15 is a perspective view of the inner tube of fig. 14 in a separated state.

Reference numbers in the figures: the device comprises a guide catheter 1, an inner sleeve 2, a retractor 3, a visual optical fiber host 4, an air bag filling host 5, a suction machine 6, a suction pipe joint 11, a puncture needle joint 12, a drainage pipe 121, an optical fiber rod 122, a camera 123, an air bag filling joint 13, a retracting air bag 14, a suction pipe 16, a puncture needle installation cavity 17, a diversion cavity 18, a suction hole 19, an upper limiting platform 21, a lower limiting platform 22, a retracting sleeve 31, a handle 32, an extension connecting section 33, an air bag filling hole 15, a metal component 34, a lens 71, a protective cover 72 and a sleeve 73.

Detailed Description

In order to solve the problems that the size of the retractor is larger than that of a guide catheter, when the retractor is placed in, the retractor lacks a support for supporting and fixing after being pulled out from the end part of the guide catheter, and is easy to shake and unstable in the placing process; the lack of the excess between the handle of the retractor and the sleeve of the retractor is a problem that the skin is easy to be blocked on the handle during operation to influence the operation.

Example 1: this application visual brain deep operation puncture drainage guide catheter of retracting, as shown in fig. 1 and fig. 2, this application visual brain deep operation puncture drainage guide catheter, including exploring main part guide catheter 1, match the suit at the interior sleeve pipe 2 in the guide catheter 1 outside to and the suit is at the retractor 3 in the interior sleeve pipe 2 outside, guide catheter 1 wherein is the long and thin hollow tube that adopts the medical plastics of pvc to make and form, and guide catheter 1's size is thinner, utilizes guide catheter 1 to do the brain tissue when conveniently carrying out the brain operation and explores, thereby avoids the damage of important blood vessel and tissue.

As shown in fig. 5, the inner cannula 2 is also made of pvc medical plastic, and the inner diameter of the inner cannula 2 is equal to the outer diameter of the guide catheter 1, and the inner cannula 2 is sleeved on the guide catheter 1 and can move up and down along the outer wall of the guide catheter 1, so that after the guide catheter 1 is inserted into the brain tissue for puncture and suction, the position of the guide catheter 1 is kept still, and the inner cannula 2 is inserted into the target position along the guide catheter 1, thereby effectively avoiding the position deviation caused by re-insertion, and improving the efficiency and safety of the operation.

As shown in fig. 6, the retractor 3 is a hollow tube with a tapered structure, the diameter of the upper port of the retractor 3 is larger, the diameter of the lower port of the retractor 3 is smaller, and the retractor 3 is sleeved on the inner sleeve 2 (the retractor of the prior patent is directly sleeved on the guide catheter, but the tapered retractor is difficult to be completely matched with the thinner guide catheter, so that the thinner guide catheter can only be used as a guide in the insertion direction when the retractor is inserted after the puncture drainage step is completed, a larger gap is formed between the retractor and the guide catheter, and the retractor is manually inserted without support, so that the retractor is easy to collide with brain tissue due to manual operation and damage the brain tissue), and the inner sleeve 2 is used as the inner liner of the retractor 3 to avoid the large-sized retractor from being lack of support and being easy to collide with the brain tissue nearby during insertion, so as to cause the brain tissue damage.

As shown in fig. 5, the inner casing 2 is provided with an upper limiting table 21 and a lower limiting table 22, and the upper limiting table 21 has a plurality of arrangement modes, for example, a circular block table around the inner casing is arranged by taking the central axis of the inner casing 2 as the center, or a plurality of support columns are arranged on the outer side of the inner casing in an annular array by taking the central axis of the inner casing 2 as the center.

As shown in fig. 7, the upper limiting table 21 has a size matching with the inner diameter of the upper port of the retractor 3 in the radial direction, the lower limiting table 22 has a size matching with the inner diameter of the lower port of the retractor 3 in the sleeving manner, the inner sleeve 2 is sleeved on the guide catheter 1, the retractor 3 is sleeved on the inner sleeve, and the upper limiting table 21 and the lower limiting table 22 of the inner sleeve support the upper end and the lower end of the retractor 3 respectively, so as to limit the position of the retractor and ensure that the retractor 3 does not shake.

Further in order to conveniently place the lower limiting table 22 of the inner sleeve is arranged at the lower end of the inner sleeve and serves as a head end of the inner sleeve which extends into the brain tissue, the lower limiting table 22 is of an artificial cone shape, the lower port of the retractor 3 is matched with the upper half section of the artificial cone lower limiting table 22, the artificial cone lower limiting table 22 is convenient for the inner sleeve to be placed into the brain tissue along the cylindrical brain tissue tunnel, and the brain tissue is prevented from being damaged.

As shown in fig. 3 and 4, the guiding catheter 1 is divided into a probing end with a thin lower end and a thick connection end with a thick upper end for convenient holding and fixing, the connection end is in a three-fork structure, the connection end is divided into three joints, namely a suction joint 11 for connecting with the suction machine 6, a puncture needle joint 12 for installing a puncture needle, and a balloon filling joint 13 for installing the balloon filling host 5.

As shown in fig. 10, three chambers which are respectively communicated with the three joints at the connection end are arranged in the guide catheter 1 along the longitudinal direction, and the three chambers are respectively a suction pipe 16, a puncture needle mounting cavity 17 and a diversion cavity 18.

Wherein the suction pipe joint 11 is communicated with a suction pipe 16, the suction pipe 16 extends to the end part of the probing end of the guiding pipe 1, and a suction hole 19 is arranged at the side surface of the probing end, after the puncture drainage is completed, a suction machine is used for communicating the suction pipe to suck the puncture part.

The puncture needle connector 12 is communicated with the puncture needle installation cavity 17, the puncture needle installation cavity 17 penetrates through the guide catheter 1 to form a passage, the brain puncture needle can directly extend out of the guide catheter 1 through the puncture needle connector 12 and the puncture needle installation cavity 17 to carry out brain puncture, the puncture needle is drawn out after the puncture is finished, and the guide catheter 1 is continuously reserved at a puncture position and used for guiding subsequent retraction operation.

As shown in fig. 12 and 13, puncture needle that uses in this application has included nook closing member and drainage tube 121, and nook closing member suit is in drainage tube 121, and sharp-pointed metal preparation is generally adopted to current puncture needle nook closing member, this application visual brain deep operation puncture drainage guide retractor guide pipe be used for brain operation, and brain tissue is more soft meticulous, and sharp-pointed metal apparatus fish tail brain tissue easily when carrying out the operation, is unfavorable for going on of operation, and the inventor discovers through practical application that the effect that utilizes thinner stereoplasm optic fibre equally can reach the puncture of brain tissue, and the diameter of general stereoplasm visual optic fibre pole is about 1.8mm, even its diameter of great camera also only has about 2.2mm, can satisfy the demand of brain tissue puncture.

Therefore, in the application, the modified visible optical fiber is used as a needle core of the puncture needle, the needle core comprises an optical fiber rod 122 and a camera 123, the optical fiber rod 122 is sleeved in the drainage tube 121, the camera 123 is installed at the end part of the optical fiber rod 122, the camera 123 comprises a lens 71, a protective cover 72 and a sleeve 73, the protective cover 72 is a transparent cylindrical shell, the head end of the protective cover 72 is in a circular arc shape and is used for penetrating into brain tissues to puncture, the rear end of the protective cover 72 is matched with the lens 71, and the protective cover 72 is installed in front of the lens 71 and is used for protecting the lens 71 and preventing the lens from being stained; the sleeve 73 is sleeved outside the lens 71 and the protective cover 72, after the protective cover 72 is installed on the lens 71, the protective cover 72 and the lens 71 are fixed together by sleeving the sleeve 73 outside, and the sleeve 73 mainly fixes the connecting part of the protective cover 72 and the lens 71, so that the arc-shaped head end of the protective cover 72 extends out of the sleeve 73; meanwhile, a sleeve sleeved outside the lens and the protective cover forms a blocking table.

The probing end of the drainage tube 121 is inwardly closed to form an inner blocking platform, a needle core formed by the optical fiber rod 122 and the camera 123 is sleeved in the drainage tube 121, the blocking platform formed by the upper sleeve 73 of the camera 123 is abutted against the inner blocking platform of the drainage tube 121 to form a limit position, so that the arc-shaped head end of the protective cover 72 can extend out of the drainage tube 121 and be fixed, and the needle core is prevented from excessively penetrating out.

After puncture, the needle core formed by the optical fiber rod 122 and the camera 123 is pulled back, and a gap is formed between the drainage tube 121 and the needle core for drainage.

As shown in fig. 10, the balloon filling connector 13 is communicated with the diversion cavity 18, the outer side of the tube body of the guiding catheter 1 close to the probing end is hermetically surrounded by a retracting balloon 14, the diversion cavity 18 extends at least over the upper side of the retracting balloon 14, a balloon filling hole 15 is arranged between the diversion cavity 18 and the retracting balloon 14, and the diversion cavity 18 is communicated with the retracting balloon 14 through the balloon filling hole 15; after the puncture is finished, the guide catheter 1 is continuously retained at the puncture position, at the moment, the air bag filling host 5 is connected with the air bag filling connector 13, and filling gas or filling liquid is filled into the retracting air bag 14 through the flow guide cavity 18, so that the peripheral brain tissue is expanded by utilizing the expanded air bag, and the damage to the brain tissue in the traditional retracting process is reduced. The air bag filling host 5 has a suction function, and can fill and suck the air bag, similar to an air pump having a charge and discharge function. The traction force of the retraction air bag to brain tissue is balanced and stable, the control is convenient, a cylindrical brain tissue tunnel is formed, and the placement of a cylindrical retraction instrument is convenient.

All retractions of the existing retracting air bags are shuttle-shaped, the two ends of the shuttle-shaped air bag are narrowed, the middle is wide, and the expanding retraction is not uniform, so that the retracting channel formed by brain tissues is also a shuttle-shaped irregular body. In order to solve the above problems, as shown in fig. 7, the retracting air bag 14 proposed by the present application forms a cylindrical shape after being filled, the cylindrical air bag can retract and support a cylindrical channel with uniform surrounding support structure, when the retractor is placed, the uniform channel can avoid the injury caused by secondary retracting support, and the safety of the operation is improved.

The method for filling the retracting air bag into the cylindrical shape has various modes, the inventor designs the air bag wall of the retracting air bag into different thicknesses through calculation, and the expansion coefficients of the air bag walls with different thicknesses are different, so that the structure finally presented after the air bag is filled into the cylindrical shape.

The retracting air bag is generally made of rubber or latex and other materials, in the expansion process, the rubber or latex with different thicknesses has different expansion coefficients, and the air bag is integrally cylindrical in the state of retracting to the limit by designing the thicknesses of different positions of the air bag wall.

The retractor 3 is a conical barrel structure, a part of the cambered surface of the retractor 3 extends upwards to form an extension connecting section 33, a handle 32 is installed through the extension connecting section 33, and the upper limiting table 21 of the inner sleeve 2 is tangent to the inner wall of the wide-mouth end of the conical retractor 3 to form a support.

The expanded retractor air bag 14 moves the inner sleeve 2 and the retractor 3 which is matched and sleeved on the inner sleeve downwards along the guide catheter 1 after the brain tissue is opened to form a brain tissue tunnel, and as shown in fig. 7, the mode of matching and sleeving is adopted among the guide catheter 1, the inner sleeve 2 and the retractor 3, the sleeving relation among the three is relatively tight, the shaking condition is not easy to occur, the safety and reliability of the operation of the effective guarantee are guaranteed, and the operation efficiency is further improved.

When the inner sleeve 2 and the retractor 3 move downwards to the upper end of the expanded retracting air bag 14, the inner sleeve 2 and the retractor 3 continue to move downwards while the retracting air bag 14 is deflated, the inner sleeve 2 extrudes and covers the air bag from top to bottom, the inner sleeve 2 and the retractor 3 replace the retracting air bag 14, the air bag is attached to the guide catheter 1 after deflation is finished, and the inner sleeve 2 and the retractor 3 replace the retracting air bag to support brain tissues to complete the insertion of the retractor 3. After the placement is finished, the guide catheter 1 and the inner sleeve 2 are taken out, and only the retractor 3 is left to continuously prop open the brain tissue operation position to form an operation channel for the subsequent operation.

The retractor is placed in the mode, the possibility of damage to brain tissues in the retracting and placing process is avoided to the maximum extent, meanwhile, the diameter of the inner channel of the inner sleeve 2 is consistent with the outer diameter of the guide catheter 1, and the structure can enable the inner sleeve to be placed in the target position along the puncture guide catheter, so that deviation is avoided. The upper limiting table 21 and the lower limiting table 22 arranged on the inner sleeve 2 limit the retractor 3, so that the stability of the retractor 3 is improved, the difficulty of operation is reduced, and the safety of the operation is improved.

As shown in figure 6, a part of the cambered surface of the conical retractor 3 extends upwards to form an extension connecting section 33, a handle 32 is installed through the extension connecting section 33, the taper of the extension connecting section 33 is the same as that of the retractor tube body part, and the structure can prevent skin from being clamped on the handle during operation and can also be properly extended and placed when the placement depth is not enough so as not to damage brain tissues.

Example 2: as shown in fig. 11, a metal member 34 is embedded on the inner wall of the retractor 3, the metal member 34 is laid along the inner wall of the retractor and the extension connecting section 33 and the handle 32, the retractor 3 is made of medical pvc plastic, the metal member 34 is embedded in the plastic wall, the surface of the metal member 34 is exposed and flush with the surface of the retractor 3.

Utilize metal component 34 can strengthen the structural strength of retractor, the handle 32 that utilizes metal component to strengthen intensity simultaneously can refute and connect mainstream holding rod on the market, makes things convenient for the fixed of retractor, because the metal has certain plasticity, so the accessible is inlayed the handle 32 that has metal component 34 and is deformed moreover to change the direction of retracting the passageway, be favorable to the exposure of operative field.

Furthermore, the handle can be replaced by bending the upper end of the metal member 34, that is, the metal member 34 is embedded along the inner wall of the retractor and the extension connecting section 33, the plastic handle is not arranged on the extension connecting section 33, and the part of the metal member 34 beyond the extension connecting section 33 is bent to form the handle of the retractor.

The metal member may be connected to ground and, in some particular cases, may serve as a ground wire. For example, in the operation process, the metal aspirator can be used as one stage of bipolar coagulation, and the metal component on the retractor is used as the other stage of bipolar coagulation, so that the suction and coagulation become possible, and the hemostasis difficulty is greatly reduced.

Example 3: the retractor 3 is made of a hollow transparent conical sleeve, the hollow transparent conical sleeve is provided with scales, the embedding depth can be accurately known through the scales, and the outer side wall of the retractor 3 is tightly attached to brain tissue after being embedded, so that the scales are optimally arranged on the inner side wall of the conical sleeve, and observation is facilitated.

Further, the scales arranged on the retractor 3 can be built in the wall of the conical sleeve, lines or particles which can be highlighted and have the marking function are fused into the wall of the conical pipeline to form scale mark marks, for example, in the process of carrying out the transparent plastic conical sleeve, the paper strip with the scales is vertically placed in molten plastic before the plastic sleeve is molded, and after the plastic sleeve is molded and cooled, the paper strip with the scales provides scale marks for the retractor in the plastic pipe wall.

Utilize this mode to set up the scale mark, the scale mark is observed easily and is difficult to wearing and tearing, can avoid destroying the smoothness on toper pipeline surface simultaneously, prevents that outstanding or sunken scale mark from scraping brain tissue.

Example 4: as shown in fig. 8 and 9, the guiding catheter 1 may be cylindrical, or may be oval, and especially, the oval guiding catheter may better probe into the brain tissue, and when the oval guiding catheter probes along the gap of the brain tissue, the pushing out and squeezing of the brain tissue during the expansion process may be further reduced, so as to reduce the damage to the brain tissue.

Example 5: retracting gasbag 14 for encircleing the tubulose film pipe in the guide catheter 1 outside, the film pipe can adopt medical rubber or latex etc. to make, the film pipe relies on the elasticity of self attached on the guide catheter, the upper and lower both ends of film pipe seal through modes such as pasting and form inclosed cavity, water conservancy diversion chamber 18 sets up gasbag filling hole 15 on guide catheter 1 at the cavity section that the film pipe formed to with water conservancy diversion chamber 18 and inclosed cavity.

Example 6: the inner sleeve 2 sleeved on the guide catheter is mainly used for supporting the retractor 3, and the retractor 3 is prevented from shaking on the guide catheter due to the overlarge inner diameter in the implantation process to influence the implantation operation.

Therefore, in the design process of the inner sleeve 2, the sleeving relation between the inner sleeve 2 and the guiding catheter 1 should be matched with each other and be relatively tight, that is, the inner diameter of the inner sleeve 2 is equivalent to the outer diameter of the lower half section of the guiding catheter 1, when the inner sleeve 2 and the guiding catheter 1 are sleeved together, the sleeving positions of the inner sleeve 2 and the guiding catheter 1 are relatively fixed due to friction force under the condition of no stress, and when the inner sleeve 2 is stressed, the inner sleeve 2 can slide along the guiding catheter 1.

In this case, because the sealed installation of surrounding of guide catheter 1 is led out the gasbag for the position that guide catheter 1 installed and led out the gasbag can obviously become thick, even if lead out the messenger's rubber film that the gasbag adopted, thickness is fairly thin, it still can make interior sleeve pipe 2 can't deviate from along guide catheter 1 after the suit, or can't directly suit along guide catheter 1 after deviating from.

Guide catheter 1 can be infected with a large amount of pollutants after having done the operation, wants to utilize here just to carry out comprehensive washing, and the well washing can't obviously be accomplished to interior sleeve pipe 2 under the condition of guide catheter 1 suit, and to the well condition, the inventor further provides a buckled interior sleeve pipe.

The buckled inner sleeve pipe is evenly divided into two halves along the center of the inner sleeve pipe, is sleeved on the guide catheter 1 in a buckled mode, and can be easily taken down to clean the inner sleeve pipe when the buckled inner sleeve pipe needs to be cleaned.

Furthermore, the buckled inner sleeve is made of plastics, one side of the buckled inner sleeve made of plastics is adhered, and the other side of the buckled inner sleeve made of plastics is separated to form a folding structure. When in buckling, the buckled inner sleeve is folded by taking the adhesion part as the center, and the other side is buckled by the buckled groove and the boss.

Furthermore, the cross section of the buckled inner sleeve which is divided into two halves is arranged into a matched saw-tooth-shaped cross section, the buckled saw-tooth-shaped cross section is more compact and firm, and the durability of the buckled inner sleeve is improved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A visual deep brain surgery puncture drainage retraction guide catheter is characterized by comprising a guide catheter (1), an inner sleeve (2) and a retractor (3), wherein the guide catheter (1) is sleeved with the inner sleeve (2), the retractor (3) is sleeved on the inner sleeve (2) in a matching manner, the guide catheter (1) is divided into a probing end and a connecting end, the connecting end is branched into three joints which are respectively a suction pipe joint (11), a puncture needle joint (12) and a balloon filling joint (13), the interior of the guide catheter (1) is longitudinally divided into three chambers which are respectively a suction pipe (16), a puncture needle mounting chamber (17) and a flow guide chamber (18), the suction pipe joint (11) is communicated with the suction pipe (16), the suction pipe (16) extends to the probing end of the guide catheter (1), and a suction hole (19) is arranged on the side face of the probing end, the puncture needle connector (12) is communicated with the puncture needle installation cavity (17), the puncture needle installation cavity (17) penetrates through the guide catheter (1), and the air bag filling connector (13) is communicated with the diversion cavity (18); a retracting air bag (14) is hermetically surrounded on the outer side of the tube body of the guide catheter (1) close to the probing end, a guide cavity (18) at least extends over the upper side of the retracting air bag (14), an air bag filling hole (15) is formed between the guide cavity (18) and the retracting air bag (14), the guide cavity (18) is communicated with the retracting air bag (14) through the air bag filling hole (15), and the retracting air bag (14) is cylindrical after being filled and expanded;

the inner sleeve (2) is sleeved on the guide catheter (1) in a matching way, and the inner sleeve (2) is provided with an upper limiting table (21) and a lower limiting table (22) which are used for supporting the retractor (3) in a matching way; retractor (3) are the toper structure, and retractor (3) cambered surface partly upwards extends and forms extension linkage segment (33), through extension linkage segment (33) installation handle (32), and last spacing platform (21) of interior sleeve pipe (2) and the tangent formation support of the inner wall of toper retractor (3) wide mouth end, and lower spacing platform (22) of interior sleeve pipe (2) and the tangent formation support of the inner wall of toper retractor (3) narrow mouth end.

2. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 1, characterized in that the retractor (3) is made of a hollow transparent conical sleeve, and the hollow transparent conical sleeve is provided with graduations.

3. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 2, characterized in that the scale provided on the retractor (3) is built in the conical casing wall.

4. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 1, characterized in that the upper limit table (21) is sized to match radially with the upper port of the retractor (3), the lower limit table (22) is sized to match radially with the lower port of the retractor (3), the lower limit table (22) of the inner cannula is arranged at the lower end of the inner cannula as the head end of the inner cannula extending into the brain tissue, and the lower limit table (22) is cone-like.

5. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 1, characterized in that the guide catheter (1), the inner cannula (2) and the retractor (3) are all made of transparent medical pvc plastic.

6. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 1, characterized in that a metal component (34) is embedded on the inner wall of the retractor (3), and the metal component (34) is laid along the inner wall of the retractor and the extension connecting section (33) and the handle (32).

7. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 1, characterized in that the body of the guide catheter (1) is oval, the inner cavity of the inner cannula (2) is oval, and the inner cannula (2) is sleeved on the oval body of the guide catheter (1).

8. The deep brain surgery puncture drainage retraction guide catheter according to claim 1, it is characterized in that the puncture needle comprises a needle core and a drainage tube (121), the needle core is sleeved in the drainage tube (121), the needle core comprises an optical fiber rod (122) and a camera (123), the optical fiber rod (122) is sleeved in the drainage tube (121), the camera (123) is arranged at the end part of the optical fiber rod (122), the camera (123) comprises a lens (71), a protective cover (72) and a sleeve (73), the protective cover (72) is a transparent cylindrical shell, the head end of the protective cover (72) is arc-shaped, the rear end of the protective cover (72) is matched with the lens (71), the protective cover (72) is installed in front of the lens (71) and used for protecting the lens (71), and the sleeve (73) is sleeved on the outer sides of the lens (71) and the protective cover (72) and used for fixing the connecting position of the protective cover (72) and the lens (71).

9. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 8, wherein the probing end of the drainage tube (121) is inwardly closed to form an inner stop, the upper sleeve (73) of the camera (123) forms a stop to abut against the inner stop of the drainage tube (121) for limiting, and the arc-shaped head end of the protective cover (72) extends out of the drainage tube (121).

10. The visual deep brain surgery puncture drainage retraction guide catheter as claimed in claim 8, wherein a light source is arranged around the lens (71).

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