CN216148814U - Butt micro-catheter guide wire exchanger - Google Patents

Abstract

The utility model discloses a butt joint microcatheter guide wire exchanger, which solves the technical problem that the existing reverse guide wire is difficult to penetrate into a forward guide catheter. The device comprises an exchange pipe sleeve, a movable disc and a guide cover, wherein the movable disc is sleeved in the exchange pipe sleeve in a sliding mode, the guide cover is arranged on the movable disc, a guide hole is formed in the movable disc, a guide cone communicated with the guide hole is further arranged in the exchange pipe sleeve, the guide cone is connected with a guide cavity, a movable sliding piece is arranged outside the guide cavity, the movable sliding piece is connected with a push-pull rod, and a handle is arranged on the push-pull rod. The guide wire butt joint device is simple in structure, scientific and reasonable in design and convenient to use, and the guide device with magnetic force is adopted, so that the entering area of the guide wire can be increased, the magnetic force of the guide wire can be used for guiding the guide wire through the magnetic force, and the micro-catheter and the guide wire can be quickly butted.

Description

Butt micro-catheter guide wire exchanger

Technical Field

The utility model belongs to the technical field of medical auxiliary equipment, and particularly relates to a butt joint micro-catheter guide wire exchanger.

Background

The Chronic Total Occlusion (CTO) lesion of the coronary artery is a complex lesion, accounts for about 20 percent of coronary artery interventional therapy cases, is the most challenging type of the coronary artery lesion at present due to the anatomical structure characteristics, has great treatment difficulty, is considered as the last fort of the coronary artery interventional therapy, and has the success rate of opening the CTO lesion of the coronary artery only being 65 to 75 percent by adopting the conventional forward coronary artery interventional therapy (PCI) technology. In recent years, with the development of technologies and instruments, the success rate of CTO lesions can be increased to 90% by adopting the reverse PCI technology, namely, the CTO lesions are opened through collateral circulation, so that the CTO lesions are called as 'sharp instruments for attacking and overcoming CTO lesions'. The reverse PCI technology was first applied in japan in 2005. Compared with the forward guide wire technology, the reverse PCI technology is more difficult and higher in risk, and requires that an operator must be very familiar with various technical operation means of forward interventional therapy and have enough capacity to foresee and reduce various complications.

The reverse PCI technology is that a reverse guide wire circulates through a collateral branch and passes through a lesion part to enter a forward guide catheter, the diameter of the forward guide catheter is relatively thin, a gap between the forward guide catheter and a coronary vessel wall is relatively large, the reverse guide wire penetrates into the forward guide catheter and is carried out in a human heart vessel, long-time and repeated attempts are sometimes needed to complete the forward guide catheter, the x-ray exposure time of a patient in an operation is long, the using amount of contrast agents in the operation is large, instruments are relatively more, and the physical strength of a doctor is greatly consumed.

Therefore, the utility model provides a docking microcatheter guide wire exchanger, which solves the technical problem that the existing reverse guide wire is difficult to penetrate into a forward guide catheter, adopts a guide device with magnetic force, can increase the entrance area of the guide wire, and can also carry out magnetic force guide on the guide wire through magnetic force so as to realize rapid docking of the microcatheter and the guide wire.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: provides a butt joint micro-catheter guide wire exchanger, which solves the prior technical problem.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the butt joint microcatheter guide wire exchanger comprises an exchange pipe sleeve, a movable disc and a guide cover, wherein the movable disc is sleeved in the exchange pipe sleeve in a sliding mode, the guide cover is arranged on the movable disc, a guide hole is formed in the movable disc, a guide cone communicated with the guide hole is further arranged in the exchange pipe sleeve, the guide cone is connected with a guide cavity, a movable sliding piece is arranged outside the guide cavity, the movable sliding piece is connected with a push-pull rod, and a handle is arranged on the push-pull rod.

Furthermore, the length of the exchange pipe sleeve is 150cm-200cm, and the diameter of the exchange pipe sleeve is 1-2 mm.

Furthermore, the exchange pipe sleeve is made of polyether amide polymer, and a polytetrafluoroethylene coating is arranged in a cavity of the exchange pipe sleeve.

Furthermore, the movable disc is made of medical silica gel, a permanent magnet material is arranged on the movable disc, and the permanent magnet material is one or more of a ferrite material, a samarium cobalt material and a neodymium iron boron material.

Further, the guide hood has an outer diameter of 4 to 6 mm.

Furthermore, permanent magnet materials are arranged on the inner walls of the guide cone and the guide cavity, and the permanent magnet materials are one or more of ferrite materials, samarium cobalt materials and neodymium iron boron materials.

Further, the moving slide and the push-pull rod are both made of stainless steel material.

Furthermore, the handle is made of medical plastics, and the handle is also provided with an anti-slip piece which is made of medical rubber.

Compared with the prior art, the utility model has the following beneficial effects:

the guide wire device is simple in structure, scientific and reasonable in design and convenient to use, solves the technical problem that the conventional reverse guide wire is difficult to penetrate into a forward guide catheter, adopts the guide device with magnetic force, can increase the entrance area of the guide wire, and can also guide the guide wire through the magnetic force to realize the rapid butt joint of the microcatheter and the guide wire.

The device comprises an exchange pipe sleeve, a movable disc and a guide cover, wherein the movable disc is sleeved in the exchange pipe sleeve in a sliding mode, the guide cover is arranged on the movable disc, a guide hole is formed in the movable disc, a guide cone communicated with the guide hole is further arranged in the exchange pipe sleeve, the guide cone is connected with a guide cavity, a movable sliding piece is arranged outside the guide cavity, the movable sliding piece is connected with a push-pull rod, and a handle is arranged on the push-pull rod. The guide cover is driven to slide by the movable disc arranged in the exchange pipe sleeve, the guide cover is in a contraction state when being arranged in the exchange pipe sleeve, and the guide cover is opened when being arranged outside the exchange pipe sleeve, so that the entrance surface of the guide wire is enlarged, and the guide wire is more favorable for entering; the movable disc is also provided with a guide cone body and a guide cavity which are communicated with the movable disc, so that the guide wire can be guided for the second time after entering the exchange pipe sleeve. In addition, the guide mechanisms are all provided with magnetic materials, so that the guide wires can be gradually drawn close to each other through magnetic force adsorption in the reverse pushing process. The utility model reduces the exchange time of the guide wires of the butt joint microcatheter, improves the success rate of the reverse PCI technology and the operation safety, greatly reduces the operation difficulty of the operation and reduces the pain of patients.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a use diagram of the present invention.

Fig. 3 is a plan view of the moving disk and the guide cover.

Fig. 4 is a cross-sectional view of the guide vertebral body and guide lumen.

Wherein, the names corresponding to the reference numbers are: 1-exchange tube sleeve, 2-moving disc, 3-guiding hood, 4-guiding cone, 5-guiding cavity, 6-moving slide, 7-push-pull rod, 8-handle, 21-guiding hole, 22-permanent magnet material, 81-anti-slip piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-4, the butt joint microcatheter guide wire exchanger provided by the utility model has the advantages of simple structure, scientific and reasonable design and convenient use, solves the technical problem that the existing reverse guide wire is difficult to penetrate into a forward guide catheter, adopts a guide device with magnetic force, can increase the entrance area of the guide wire, and can also guide the guide wire by magnetic force to realize the quick butt joint of the microcatheter and the guide wire.

The device comprises an exchange pipe sleeve 1, amovable disc 2 which is sleeved in the exchange pipe sleeve 1 in a sliding mode, and aguide cover 3 which is arranged on themovable disc 2, wherein aguide hole 21 is formed in themovable disc 2, aguide cone 4 which is communicated with theguide hole 21 is further arranged in the exchange pipe sleeve 1, theguide cone 4 is connected with aguide cavity 5, a movablesliding piece 6 is arranged outside theguide cavity 5, the movablesliding piece 6 is connected with a push-pull rod 7, and ahandle 8 is arranged on the push-pull rod 7. According to the utility model, theguide cover 3 is driven to slide by themovable disc 2 arranged in the exchange pipe sleeve 1, theguide cover 3 is in a contraction state in the exchange pipe sleeve 1, and is opened when theguide cover 3 is outside the exchange pipe sleeve 1, so that the entrance surface of a guide wire is enlarged, and the guide wire is more beneficial to entering; themovable disc 2 is also provided with a guidevertebral body 4 and aguide cavity 5 which are communicated with the movable disc, and the guide wire can be guided secondarily after entering the exchange pipe sleeve 1.

The length of the exchange pipe sleeve 1 is 150cm-200cm, the diameter of the exchange pipe sleeve 1 is 1-2mm, and the surgical requirements of CTO pathological reverse PCI technology can be greatly met. Besides, the exchange pipe sleeve 1 is made of polyether amide polymer, and a polytetrafluoroethylene coating 11 is arranged in the cavity of the exchange pipe sleeve 1 and can reduce the sliding resistance of the sliding structure in the exchange pipe sleeve 1.

The outer diameter of theguide cover 3 is 4-6mm, theguide cover 3 can synchronously move along with themovable disc 2, theguide cover 3 is in a contraction state when being arranged in the exchange pipe sleeve 1, and theguide cover 3 is opened when being arranged outside the exchange pipe sleeve 1, so that the entry surface of the guide wire is enlarged, the guide wire can enter more conveniently, and then enters the forward guide catheter to complete the butt joint penetration of the reverse guide wire.

Themovable disc 2 is made of medical silica gel, medical requirements are met,permanent magnet materials 22 are arranged on the inner walls of themovable disc 2, theguide cone 4 and theguide cavity 5, the permanent magnet materials are one or more of ferrite materials, samarium-cobalt materials and neodymium-iron-boron materials, when the position of a guide wire is close to themicro-movable disc 2, the guide wire is gradually close to aguide hole 21 in the reverse moving process under the magnetic adsorption effect of themovable disc 2, and the first guide effect is played. Then the seal wire gets into exchange pipe box 1 in, under the secondary guide ofguide centrum 4 andguide chamber 5, realizes more accurate removal, and the magnetic force of the inner wall ofguide centrum 4 andguide chamber 5 adsorbs makes its motion not squint this moment, and above-mentioned permanent magnetic material's magnetic force adsorption is difficult too strong, avoids seal wire and permanent magnetic material magnetism laminating and can't remove.

The external push-pull structure comprises a moving slidingpiece 6, a push-pull rod 7 and ahandle 8, and a user can drive the moving slidingpiece 6 and the push-pull rod 7 to move through thehandle 8, so that the guide wire guide structure slides. The movablesliding piece 6 and the push-pull rod 7 are both made of stainless steel materials, thehandle 8 is made of medical plastics, thehandle 8 is further provided with ananti-skidding piece 81, theanti-skidding piece 81 has labor-saving and comfortable use feeling, and theanti-skidding piece 81 is made of medical rubber.

In the interventional therapy process, the utility model reaches the position of a coronary artery chronic total occlusion proximal fiber cap, the retrograde guide wire circularly reaches the position of a coronary artery chronic total occlusion distal fiber cap through the side branch and enters occlusion lesions, and when the position of the retrograde guide wire is close to the utility model, the guide wire can quickly enter theguide cavity 5 through the guide structure and magnetic attraction, thereby facilitating butt joint exchange between the microcatheter and the guide wire and subsequent operation.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and certainly not to limit the patent scope of the present invention; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems to be solved by the present invention, which are not substantially changed or supplemented by the spirit and the concept of the main body of the present invention, are still consistent with the present invention and shall be included in the scope of the present invention; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the utility model.

Claims (8)

1. Butt joint microcatheter seal wire exchanger, its characterized in that: the device comprises an exchange pipe sleeve (1), a movable disc (2) which is sleeved in the exchange pipe sleeve (1) in a sliding mode, and a guide cover (3) which is arranged on the movable disc (2), wherein a guide hole (21) is formed in the movable disc (2), a guide cone (4) which is communicated with the guide hole (21) is further arranged in the exchange pipe sleeve (1), the guide cone (4) is connected with a guide cavity (5), a movable sliding piece (6) is arranged outside the guide cavity (5), the movable sliding piece (6) is connected with a push-pull rod (7), and a handle (8) is arranged on the push-pull rod (7).

2. The docking microcatheter guidewire exchanger of claim 1, wherein: the length of the exchange pipe sleeve (1) is 150cm-200cm, and the diameter of the exchange pipe sleeve (1) is 1-2 mm.

3. The docking microcatheter guidewire exchanger of claim 1, wherein: the exchange pipe sleeve (1) is made of polyether amide polymer, and a polytetrafluoroethylene coating (11) is arranged in a cavity of the exchange pipe sleeve (1).

4. The docking microcatheter guidewire exchanger of claim 1, wherein: the movable disc (2) is made of medical silica gel, a permanent magnet material (22) is arranged on the movable disc (2), and the permanent magnet material is ferrite material, samarium cobalt material or neodymium iron boron material.

5. The docking microcatheter guidewire exchanger of claim 1, wherein: the outer diameter of the guide cover (3) is 4-6 mm.

6. The docking microcatheter guidewire exchanger of claim 1, wherein: the inner walls of the guide cone body (4) and the guide cavity (5) are respectively provided with a permanent magnet material (22), and the permanent magnet material is one of ferrite material, samarium cobalt material and neodymium iron boron material.

7. The docking microcatheter guidewire exchanger of claim 1, wherein: the moving slide piece (6) and the push-pull rod (7) are both made of stainless steel materials.

8. The docking microcatheter guidewire exchanger of claim 1, wherein: the handle (8) is made of medical plastics, the handle (8) is also provided with an anti-slip piece (81), and the anti-slip piece (81) is made of medical rubber.

Images