CN117159888A - Guide wire guiding device and medical intervention equipment - Google Patents

Abstract

The invention provides a guide wire guiding device. The guide head is arranged at the front end of the guide wire; the inside of elastic housing is provided with a plurality of bar gasbag, and every bar gasbag extends along the length direction of guide head, and a plurality of bar gasbags set gradually along the circumference direction of guide head to make bar gasbag extension or shorten through the gas volume that changes in the bar gasbag, and then change the crooked direction and the crooked angle of guide head. The strip-shaped air bag is lengthened or shortened according to the relative position and angle of the branch blood vessel and the main blood vessel, so that the guide head forms a bending section. The formation of the bending section can enable the guide head to enter the branch blood vessel from the main blood vessel, thereby ensuring the accuracy and the safety of the guide wire.

Description

Guide wire guiding device and medical intervention equipment

Technical Field

The invention relates to the technical field of interventional medical instruments, in particular to a guide wire guiding device and medical interventional equipment.

Background

Thrombus is a clinically common disease, and is a small block formed by blood flow on the surface of an exfoliated part or a repaired part on the inner surface of a blood vessel of the cardiovascular system. In the variable fluid dependency, the thrombus consists of insoluble fibrin, deposited platelets, accumulated leukocytes and entrapped erythrocytes. In general, the thrombus hazard mainly has the following points: 1. the thrombus blocks the lumen of the blood vessel, thus preventing the blood backflow at the far end, and the symptoms of obvious swelling, severe pain, superficial skin vasodilation and the like of the limb at the far end can be caused. 2. The thrombus can be blocked along with blood flow, and serious complications such as pulmonary embolism, cerebral embolism, myocardial infarction and the like can cause the thrombus to completely block blood supply vessels of important organs, so that the organs are ischemic, anoxic and even the death of patients. The existing methods for removing thrombus in blood vessels are more and can be divided into drug treatment and operation treatment according to different treatment modes. The medicine treatment can be thrombolytic medicine, anticoagulant medicine and platelet aggregation inhibitor. The operation treatment comprises traditional operation cutting and thrombus removing treatment and minimally invasive operation treatment, wherein the minimally invasive operation treatment comprises thrombolysis of a vessel lumen embedding tube, thrombus suction in the vessel lumen and the like.

Minimally invasive surgery generally employs a guidewire guide to guide the equipment used for the surgery into the blood vessel, thereby facilitating subsequent surgical treatment. Vascular guidance has high requirements on operators, and how to improve the success rate and safety of vascular guidance is important for the life safety of patients. Currently, a guide wire guiding device for clinical use includes a guide wire and a guide head, the guide head being located at a front side of the guide wire to guide forward movement of the guide wire in a blood vessel. When the existing guide heads are mostly mechanical or wire-type guide heads. The mechanical guide head has a complex structure and high operation requirement on doctors, and meanwhile, the mechanical guide head has high failure rate. The operation requirement of the guide wire type guide head is relatively low, but when the guide wire type guide head meets the intersection of a branch vessel and a main vessel or bends and turns of the vessel, the guide wire type guide head has poor maneuverability and is easy to lose the inner wall of the vessel. Therefore, the success rate and the safety of the existing guide wire guiding device are low.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a guidewire guiding device that overcomes or at least partially solves the above problems, and can solve the problems of low safety and success rate of the existing guidewire guiding device, thereby improving the safety and success rate of vascular guidance.

Specifically, the invention provides a guide wire guiding device, which comprises a guide wire, a guide head and an elastic shell; the guide head is arranged at the front end of the guide wire; the inside of elastic housing is provided with a plurality of bar gasbag, and every bar gasbag extends along the length direction of guide head, and a plurality of bar gasbags set gradually along the circumference direction of guide head to make bar gasbag extension or shorten through the gas volume that changes in the bar gasbag, and then change the crooked direction and the crooked angle of guide head.

Optionally, the guidewire guiding device further comprises a support bar and a plurality of support balloons; the support bar is arranged in the middle of the front end of the guide wire;

the supporting air bags are uniformly distributed along the circumferential direction of the supporting bar, the supporting air bags extend along the radial direction of the supporting bar to form a strip shape, one end of each supporting air bag is connected with the supporting bar, and the other end of each supporting air bag is abutted to the inner wall of the corresponding guide wire, so that when the supporting air bags extend, the surfaces of the guide wires at the corresponding positions are protruded, and the protrusions are abutted to the blood vessel walls.

Optionally, the number of the strip-shaped air bags is equal to the number of the supporting air bags; each strip-shaped air bag corresponds to one supporting air bag along the length direction of the guide wire; the corresponding supporting air bags and the strip-shaped air bags are communicated with each other.

Optionally, the guidewire guiding device further comprises an inflation device and a dispensing valve; the air charging device is communicated with the plurality of strip-shaped air bags through the distribution valve, and the air charging device charges a certain specific strip-shaped air bag or supporting air bag through the distribution valve, or the strip-shaped air bag or the supporting air bag has different charging amounts through the distribution valve; the dispensing valve can also simultaneously control the amount of venting of the strip-shaped air bag or the support air bag.

Optionally, the guide head also has an initial bend section therein to enable the bending direction to be changed when the balloon is lengthened or shortened, thereby causing the bend section to form multiple bends, or to form a swivel bend.

Optionally, the guidewire guidance device further comprises a plurality of auxiliary balloons; the auxiliary air bag can enable the strip-shaped air bag to be lengthened or shortened by changing the air quantity in the air bag; the auxiliary airbags are uniformly distributed around the circumference of the guide head, so that the bending direction and the bending angle of the guide head are changed.

Optionally, the guide wire guiding device further comprises a camera; the camera is arranged at the front end of the guide head and is positioned in the elastic shell; the side wall of the elastic shell corresponding to the camera is transparent.

Optionally, a deflation pipe is arranged on the strip-shaped air bag; the air release pipe extends forwards to form an elastic shell, and a one-way valve is arranged on the air release pipe; the air release pipe is used for carrying out impact breaking on thrombus in the blood vessel during air release.

A medical intervention device comprising a catheter and a guidewire guiding means; the guide wire guiding device is any one of the guide wire guiding devices; the guide wire is used to guide the catheter.

In the guide wire guiding device, the guide wire, the guide head and the elastic shell are arranged, and the inner side of the elastic shell is provided with a plurality of strip-shaped air bags. The gas quantity in the strip-shaped air bag is changed to enable the strip-shaped air bag to be lengthened or shortened, and then the bending direction and the bending angle of the guide head are changed. The strip-shaped air bag is lengthened or shortened according to the relative position and angle of the branch blood vessel and the main blood vessel, so that the guide head forms a bending section. The bending direction of the bending section is normal to the branch vessel, while the bending section and the branch vessel keep the line as much as possible. The formation of the curved segment enables the guide head to enter the branch vessel from the main vessel, thereby ensuring the accuracy of the guide wire. In addition, the direction and the angle of the bending section formed by controlling the air bag only need to control the air inflow in the strip-shaped air bag at the specific position and the length of the strip-shaped air bag, so that the operation difficulty can be greatly reduced, and the misoperation generated in the great complex operation process can be avoided.

Further, the strip-shaped air bag is arranged in a bending section relative to other guide heads by a mechanical structure, because the strip-shaped air bag is soft, so that the strip-shaped air bag is flexibly contacted with the elastic shell, and the damage of the elastic shell or the damage of the formed bending section with edges and corners to the inner wall of a blood vessel is prevented.

Meanwhile, when a certain section of the blood vessel is a tortuosity section with more curves, when the section passes through one bending position, the bending direction of the bending section is changed through the disc motor, so that the guide head can smoothly pass through the bending position of the blood vessel, the damage to the blood vessel wall of the bending position caused by the guide head is prevented, and the safety of the guide wire guiding device is improved. In the prior art, the guidewire guide is typically only able to access one or both bends, and not substantially access multiple bends. The invention can automatically turn, can obviously improve the extending length of the guide wire through more tortuosity sections, inflection points and the like, and can meet various requirements by extending once.

Further, the invention also significantly reduces the variety and number of existing guidewire guides for current guidewires of various bends.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic block diagram of a guidewire guidance device according to one embodiment of the invention;

FIG. 2 is a schematic cross-sectional view of a guidewire front end in a guidewire guidance device in accordance with an embodiment of the invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

fig. 4 is a partial enlarged view at B in fig. 1.

Detailed Description

A guidewire guidance device according to an embodiment of the present invention is described below with reference to fig. 1 to 4. In the description of the present embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature, i.e. one or more such features. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. When a feature "comprises or includes" a feature or some of its coverage, this indicates that other features are not excluded and may further include other features, unless expressly stated otherwise.

Unless specifically stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," "coupled," and the like should be construed broadly, as they may be connected, either permanently or removably, or integrally; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. Those of ordinary skill in the art will understand the specific meaning of the terms described above in the present invention as the case may be.

Furthermore, in the description of the present embodiments, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature therebetween. That is, in the description of the present embodiment, the first feature being "above", "over" and "upper" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature "under", "beneath", or "under" a second feature may be a first feature directly under or diagonally under the second feature, or simply indicate that the first feature is less level than the second feature.

In the description of the present embodiment, a description referring to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic structural view of a wire guide device, as shown in fig. 1, and referring to fig. 2 to 4, an embodiment of the present invention provides a wire guide device. The guidewire guiding device comprises a guidewire 100, a guide head 200 and an elastic housing 300.

The guide head 200 is provided at the front end of the guide wire 100. Specifically, the rear end of the guide head 200 is connected to the front end of the guide wire 100, and the guide head 200 plays a role in guiding the guide wire 100. The guide head 200 is made of flexible material, so as to be bent and not easy to stretch.

The inside of the elastic housing 300 is provided with a plurality of bar-shaped air bags 210, each of the bar-shaped air bags 210 extends along the length direction of the guide head 200, and the plurality of bar-shaped air bags 210 are sequentially provided along the circumferential direction of the guide head 200, so that the bar-shaped air bags 210 are lengthened or shortened by changing the amount of air in the bar-shaped air bags 210, thereby changing the bending direction and the bending angle of the guide head 200. Specifically, the strip-shaped air bag 210 is connected to the guide head 200 in the longitudinal direction of the guide head 200, and the elastic housing 300 has elastic deformability capable of generating corresponding bending along with the bending of the guide head 200.

Specifically, the elastic housing 300 is generally made of PU material, and the PU material is coated on the elastic housing 300, so that friction between the guide head 200 and the vessel wall can be reduced, so that the guide head 200 slides in the vessel.

In operation, the guide head 200 is introduced into the main vessel 510 to be examined, and the guide wire 100 and the guide head 200 are slid forward along the main vessel 510 together.

In the initial state, the guide head 200 maintains a straight state, facilitating the forward movement of the guide head 200 within the main blood vessel 510.

When the guide head 200 passes through the branched blood vessel 520, and the branched blood vessel 520 is the branched blood vessel 520 which is planned to be detected in advance, the position of the branched blood vessel 520 with respect to the main blood vessel 510 and the angle with respect to the main blood vessel 510 are determined. Depending on the position and angle of the branched blood vessel 520, the strip balloon 210 is lengthened or shortened, thereby forming the guide head 200 into a curved section. The bend of the curved segment is directed against the branch vessel 520 while the curved segment is kept as parallel as possible to the branch vessel 520. The formation of the curved segment enables the guide head 200 to pass from the main vessel 510 into the branch vessel 520, thereby ensuring the accuracy of the guide wire 100.

Alternatively, when the guide head 200 passes through the branched blood vessel 520, and the branched blood vessel 520 is not the branched blood vessel 520 to be detected in advance, the bar-shaped balloon 210 is kept in an initial state, so that the guide head 200 is in a straight state, to prevent the guide head 200 from erroneously entering the branched blood vessel 520.

In the other case, when the passing main blood vessel 510 takes a meandering segment, the angle of the meandering segment formed by the guide head 200 is appropriately adjusted by elongating or shortening the balloon by the strip according to the meandering position of the main blood vessel 510, so that the guide head 200 can be slid in a softer manner within the blood vessel.

Specifically, the strip-shaped balloon 210 is disposed to form a curved section of the guide head 200 with respect to other structures by a mechanical structure because the strip-shaped balloon 210 is soft in nature to allow the strip-shaped balloon 210 to flexibly contact the elastic housing 300 to prevent damage to the elastic housing 300 or damage to the inner wall of the blood vessel due to the corner angle of the formed curved section.

In the present embodiment, the initial state of the strip airbag 210 is an elongated inflated state, and the lengths and the air pressures of the plurality of strip airbags 210 are the same, so that the guide is made to a straight line maintaining state. When the guide head 200 is to be bent on the preset side, the deflation of the bar-shaped air bag 210 on the preset side of the guide head 200 is shortened and the inflation of the bar-shaped air bag 210 on the other side corresponding to the preset side of the guide head 200 is lengthened or kept unchanged. The strip-shaped air bags 210 on one side are shorter than the strip-shaped air bags 210 on the other side, and the length of the guide head 200 is unchanged, so that the strip-shaped air bags 210 on the longer side are inclined relative to the strip-shaped air bags 210 on the shorter side, and therefore, the guide head 200 forms a bending section to the preset side under the cooperation of the strip-shaped air bags 210 on the two sides.

In the present embodiment, the initial state of the bar-shaped air bag 210 is a completely contracted deflated state, and when the guide head 200 is to be bent on one side to be preset, the bar-shaped air bag 210 on the other side corresponding to the preset side of the guide head 200 is inflated and elongated. Since the length of the guide head 200 is unchanged, the guide head 200 can be completely generated when the strip-shaped air bag 210 is extended, and therefore, the guide head 200 forms a bending section to a preset side under the driving of the strip-shaped air bag 210.

Further, the difference in length between the two sides and the degree of bending of the bending section are positively correlated.

In this embodiment, the guidewire guidance device further includes a first control mechanism that is capable of inflating or deflating a particular balloon 210.

In some embodiments of the present invention, as shown in fig. 1-4, the guidewire guide device further includes a support bar 420 and a plurality of support balloons 410. The supporting bar 420 is disposed in the middle of the front end of the guide wire 100, the front end of the guide wire 100 is hollow, and the supporting bar 420 is inserted into the guide wire 100.

The support balloons 410 are uniformly distributed along the circumference of the support bar 420, and the support balloons 410 extend along the radial direction of the support bar 420 to form a strip shape, one end of the support balloon 410 is connected with the support bar 420, and the other end is abutted with the inner wall of the guide wire 100, so that when the support balloons 410 extend, the surface of the guide wire 100 at the corresponding position is protruded, and the protrusion is abutted with the wall of a blood vessel. Specifically, the circumferential wall of the front end of the guide wire 100 has elasticity, so that the other end of the support balloon 410 moves away from the support bar 420 when the support balloon 410 is elongated, pushing the circumferential wall of the guide wire 100 outward into a convex shape.

Further, when the supporting balloon 410 protrudes one side of the front end of the guide wire 100 to a certain extent, the protruding portion of the peripheral wall of the guide wire 100 is abutted against one side corresponding to the vessel wall, and the vessel wall promotes the guide wire 100 to move toward the corresponding side of the abutment position of the guide wire 100 and the vessel by the reaction force, so as to influence the sliding direction of the guide head 200 in the vessel, and facilitate the guide head 200 to enter the branch vessel 520 on the corresponding side thereof from the main vessel 510, thereby further improving the stability and accuracy of guiding the guide head 200 in the vessel, and further improving the safety in the detection process.

Preferably, the number of the support airbags 410 is four, and when the number of the support airbags 410 is four, the four support airbags 410 respectively correspond to four different directions, and the four support airbags 410 are arranged to save installation space.

Preferably, the number of the support airbags 410 is eight, and when the number of the support airbags 410 is eight, the eight support airbags 410 respectively correspond to eight different directions, and the eight support airbags 410 are arranged to improve the control of the bending direction of the front end of the guide wire 100.

In some embodiments of the present invention, as shown in fig. 1 to 4, the number of the bar-shaped airbags 210 is equal to the number of the support airbags 410, each of the bar-shaped airbags 210 corresponds to one of the support airbags 410 along the length direction of the guide wire 100, and the corresponding support airbags 410 and the bar-shaped airbags 210 communicate with each other.

Specifically, the support airbag 410 and the strip airbag 210 are mutually communicated through the ventilation pipe 230, and the support airbag 410 and the strip airbag 210 are mutually communicated through the ventilation pipe 230, so that the strip airbag 210 and the support airbag 410 can be inflated or deflated simultaneously, and the strip airbag 210 and the support airbag 410 can be lengthened or shortened synchronously. When the bar-shaped balloon 210 and the support balloon 410 are simultaneously lengthened or shortened, the bar-shaped balloon 210 and the support balloon 410 respectively bend the leading ends of the guide head 200 and the guide wire 100 in the same direction, so that the uniformity of the bending of the leading ends of the guide head 200 and the guide wire 100 can be ensured.

In other embodiments, the number of bar airbags 210 is equal to the number of support airbags 410. The difference is that the strip airbag 210 and the support airbag 410 are independent from each other and are not communicated with each other, as in the above embodiment. Accordingly, the support balloon 410 and the strip balloon 210 can be individually lengthened or shortened, so that flexibility in bending the distal ends of the guide head 200 and the guide wire 100 can be increased, and adaptability of the guide wire guide device in a blood vessel can be further improved.

In this embodiment, the guidewire guiding device further includes a first control mechanism and a second control mechanism. The first control mechanism is capable of inflating or deflating a particular bar-shaped bladder 210. The second control mechanism is capable of inflating or deflating a particular support balloon 410.

In some embodiments of the invention, as shown in fig. 3 and 4, the guidewire guidance device further includes an inflation device and a dispensing valve.

The inflator communicates with the plurality of strip-shaped air cells 210 or the support air cells 410 through the distribution valve, and inflates a specific strip-shaped air cell 210 or support air cell 410 through the distribution valve. Since each of the strip-shaped airbags 210 is communicated with one of the support airbags 410, when the strip-shaped airbag 210 or the support airbag 410 is inflated and elongated, the support airbag 410 and the strip-shaped airbag 210 communicated therewith are inflated and elongated. The inflator can ensure the consistency of the bending of the guide head 200 and the front end of the guide wire 100 by the arrangement of the distribution valve.

In other embodiments, the inflator may have different amounts of inflation of the strip airbag 210 or the support airbag 410 through the dispensing valve. The dispensing valve can also control the amount of deflation of either the strip bladder 210 or the support bladder 410 simultaneously.

Specifically, the inflatable device makes the strip-shaped air bags 210 or the supporting air bags 410 have different inflatable amounts through the distribution valve, so that the strip-shaped air bags 210 or the supporting air bags 410 on two different sides have pressure differences, and further, bending requirements of the guide head 200 and the front end of the guide wire 100 in different directions are met. The dispensing valve can also simultaneously control the amount of deflation of the strip bladder 210 or the support bladder 410 that needs to be deflated.

In some embodiments of the present invention, as shown in FIG. 1, the guide head 200 also has an initial bend section therein to enable the bending direction to be changed when the balloon 210 is lengthened or shortened, thereby making the bend section a plurality of bends, or making a swivel bend.

Specifically, the initial state guide head 200 has a curved section so that the curved section can increase the contact area with the wall of the blood vessel when the guide head 200 moves in the blood vessel, thereby preventing damage to the blood vessel when the guide head 200 slides, and improving the safety of the use of the guide wire guide device.

The bending section is formed to be bent several times in an "S" shape, which can increase the adaptability of the guide head 200 in the blood vessel.

In some embodiments of the invention, the guidewire guidance device further comprises a plurality of auxiliary balloons.

The auxiliary airbag can lengthen or shorten the strip airbag 210 by changing the amount of gas in the airbag. The plurality of auxiliary airbags are uniformly distributed around the circumference of the guide head 200, thereby changing the bending direction and the bending angle of the guide head 200.

Specifically, the auxiliary airbag and the strip-shaped airbag 210 are relatively independent, so that the lengths of the auxiliary airbag and the strip-shaped airbag 210 on the same side are not uniform, and the auxiliary airbag and the strip-shaped airbag 210 can bend the guide head 200 in different directions and form a meandering section composed of three bends.

In this embodiment, the inflator is capable of communicating with the interior of the auxiliary airbag through the distribution valve, and the inflator inflates a particular auxiliary airbag through the distribution valve.

In some embodiments of the invention, as shown in fig. 4, the guidewire guidance device further includes a camera 220. The camera 220 is disposed at the front end of the guide head 200 and is located in the elastic housing 300. The side wall of the elastic housing 300 corresponding to the camera 220 is transparent, so that the camera 220 can acquire image information in blood vessels, and meanwhile, the camera 220 is arranged at the front end of the guide head 200, so that the camera 220 acquires the image information in blood vessels at the front end of the guide head 200, and the lengths of the strip-shaped air bag 210 and the supporting air bag 410 are adjusted according to the image information.

In this embodiment, the camera 220 can be rotatably disposed in the elastic housing 300 around the guide wire 100 in the circumferential direction, so that when the camera 220 rotates, the camera 220 can acquire image information of a circumference of the inner wall of the blood vessel, and can comprehensively grasp the condition inside the blood vessel.

Specifically, a disc motor is installed in the elastic housing 300, and the camera 220 is installed on the disc motor to drive the camera 220 to rotate when the disc motor is started.

Further, other motors or other means besides a disk motor may be used to rotate the camera 220 circumferentially about the guide head 200.

In this embodiment, the camera 220 may adopt a panoramic camera 220, and the panoramic camera 220 can acquire image information in a blood vessel at 360 ° without dead angles. Specifically, the camera 220 is externally connected with a display, and the display is used for displaying image information shot by the camera 220.

In this embodiment, the guidewire guide device further includes a micro spring. The micro spring is disposed between the camera 220 and the guide head 200, and is configured to maintain the camera 220 in an initial position.

Specifically, the micro spring is an elastic member, one end of the micro spring is connected with the camera 220, and the other end of the micro spring is connected with the guide head 200, so that when the guide head 200 is slightly rocked, the micro spring can vibrate the camera 220, the shooting angle of the camera 220 is increased, and the image information in a larger range can be obtained. That is, when the photographing angle of the camera 220 needs to be changed, the operator needs to shake the guide wire 100 slightly.

Specifically, the image information includes a thrombus position in a blood vessel wall, an angle of a blood vessel curved portion, a direction of the blood vessel curved portion, a position of the branch blood vessel 520 with respect to the main blood vessel 510, an angle of the branch blood vessel 520 with respect to the main blood vessel 510, and the like. The inflator adjusts the lengths of the support balloon 410 and the strip balloon 210 according to the image information and through the distribution valve, thereby adjusting the bending angles of the guide head 200 and the front end of the guide wire 100.

In some embodiments of the present invention, the balloon 210 is provided with a bleed tube extending forwardly from the flexible housing 300, and the bleed tube is provided with a one-way valve. The air release pipe is used for carrying out impact breaking on thrombus in the blood vessel during air release.

Specifically, the arrangement of the check valve prevents blood from flowing backward into the strip balloon 210. Further, the release of the columnar high-pressure gas within the initiating tube breaks up the thrombotic tissue, thereby preventing the thrombotic tissue from obstructing forward sliding of the guide head 200. It should be noted that, the high pressure gas is relatively speaking, and the high pressure adopted above can only cause the breaking effect on thrombus, but not cause damage to the inner wall of the blood vessel.

A medical intervention device comprising a catheter and a guidewire guiding means; the guide wire guiding device is any one of the guide wire guiding devices; the guidewire 100 is used to guide a catheter.

The catheter can be sleeved on the guide wire 100 and the guide head 200 so that the catheter can slide deep into the blood vessel along the guide wire 100 and the guide head 200 after the guide head 200 reaches the preset position of the blood vessel.

Specifically, the catheter is connected with a treatment tool, and after reaching a preset position of a preset blood vessel, the catheter can treat the focus part of the blood vessel.

After the guide head 200 is bent back, the catheter may be advanced along the guidewire 100 and guide head 200. After the catheter is bent, the guide wire 100 and the guide head 200 are then moved, so that the guide wire 100 and the guide head 200 can be ensured to move continuously.

In operation, the guide head 200 is introduced into the main blood vessel 510 to be inspected, the guide wire 100 and the guide head 200 slide along the main blood vessel 510, and the camera 220 acquires continuous intravascular graphic information. When the guide head 200 passes through the branched blood vessel 520, the branched blood vessel 520 is a branched blood vessel 520 which is planned to be detected in advance. The position and angle of the branched blood vessel 520 relative to the main blood vessel 510 are determined according to the image information, and the corresponding bar-shaped balloon 210 or the supporting balloon 410 is inflated by the inflation device and the distribution valve, so that the front ends of the guide head 200 and the guide wire 100 are bent to the branched blood vessel 520 by the corresponding proper angle, and finally the guide head 200 is introduced into the corresponding branched blood vessel 520.

After the guide head 200 completes the vascular guiding work, the catheter enters the blood vessel from outside the body along the guide wire 100, so that the medical access device treats and repairs the focus part of the blood vessel.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (9)

1. A guidewire guidance device comprising a guidewire, further comprising:

the guide head is arranged at the front end of the guide wire;

the flexible casing, the inboard of flexible casing is provided with a plurality of bar gasbag, every bar gasbag is followed the length direction of guide head extends, and a plurality of bar gasbag is followed the circumference direction of guide head sets gradually, so that through the gas volume that changes in the bar gasbag makes the bar gasbag is elongated or is shortened, and then change the direction of bending and the bending angle of guide head.

2. The guidewire guidance device of claim 1, further comprising:

the supporting bar is arranged in the middle of the front end of the guide wire;

the supporting air bags are uniformly distributed along the circumferential direction of the supporting strip, the supporting air bags extend along the radial direction of the supporting strip to form a strip shape, one end of each supporting air bag is connected with the supporting strip, the other end of each supporting air bag is in butt joint with the inner wall of the corresponding guide wire, when the supporting air bags extend, the surface of the guide wire at the corresponding position is protruded, and the protrusions are in butt joint with the blood vessel wall.

3. A guidewire guidance device according to claim 2, wherein,

the number of the strip-shaped air bags is equal to that of the supporting air bags; each of the strip-shaped air bags corresponds to one of the support air bags along the length direction of the guide wire; the corresponding supporting air bags and the strip-shaped air bags are communicated with each other.

4. The guidewire guidance device of claim 2, further comprising an inflation device and a dispensing valve;

the air charging device is communicated with a plurality of the strip-shaped air bags through the distribution valve, and is used for charging a certain specific strip-shaped air bag or supporting air bag through the distribution valve, or is used for charging different amounts of air into the strip-shaped air bag or the supporting air bag through the distribution valve; the dispensing valve can also control the amount of venting of the strip-shaped air bag or the support air bag simultaneously.

5. The guidewire guidance device of claim 1, wherein the guidewire guidance device comprises a guidewire,

the guide head is also internally provided with an initial bending section so as to change the bending direction when the strip-shaped air bag stretches or shortens, thereby forming a plurality of bending or turning bending of the bending section.

6. The guidewire guidance device of claim 5, further comprising a plurality of auxiliary balloons;

the auxiliary air bag can enable the strip-shaped air bag to be lengthened or shortened by changing the air quantity in the air bag; the auxiliary airbags are uniformly distributed around the circumference of the guide head, so that the bending direction and the bending angle of the guide head are changed.

7. The guidewire guidance device of claim 1, further comprising a camera;

the camera is arranged at the front end of the guide head and is positioned in the elastic shell; the side wall of the elastic shell corresponding to the camera is transparent.

8. The guidewire guidance device of claim 1, wherein the guidewire guidance device comprises a guidewire,

the strip-shaped air bag is provided with an air release pipe; the air release pipe extends forwards to extend out of the elastic shell, and a one-way valve is arranged on the air release pipe; the air release pipe is used for carrying out impact breaking on thrombus in the blood vessel during air release.

9. A medical intervention device comprising a catheter and a guidewire guide device, wherein the guidewire guide device is the guidewire guide device of any one of claims 1-8;

the guide wire is used for guiding the catheter.