CN215874860U - Puncture guide wire, sheath pipe and puncture assembly - Google Patents

Abstract

The utility model provides a puncture guide wire, a sheath tube and a puncture assembly, wherein the puncture guide wire comprises a guide wire inner core main body section and a puncture head end, and the puncture head end is connected with the far end of the guide wire inner core main body section; at least the puncture head end in the guide wire inner core main body section and the puncture head end is conductive and is used for receiving energy released by a sheath tube in a wireless transmission mode; the sheath comprises a tube body and a third conductive unit arranged on the tube body, and the third conductive unit is used for releasing energy to the puncture guide wire in a wireless transmission mode so as to heat the puncture head end of the puncture guide wire. Therefore, when the puncture assembly consisting of the puncture guide wire and the sheath tube is used for puncture, the guide wire puncture is realized through an energy source, and the guide wire does not need to be provided with a tail wire, so that the influence on the operation of a doctor is reduced, and the operation safety is improved.

Description

Puncture guide wire, sheath pipe and puncture assembly

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a guide wire, a sheath tube and a puncture assembly.

Background

For a traditional mechanical puncture needle such as an interatrial septum puncture needle, in the process of puncturing interatrial septum, a sharp puncture head moves forward for a certain distance after puncture is finished due to inertia, so that the inner wall of a heart is scratched. Meanwhile, the simplified operation steps are taken into consideration, the operation time is reduced, and the puncture guide wire is applied to the interatrial puncture operation, so that the functions of the puncture needle and the guide wire are taken into consideration. The puncture guide wire is applied to a great extent, the problems are solved under the driving of the active development of surgical consumables to a high-end intelligence, the solution of the existing patent is that the puncture guide wire of the following types can be used for reducing the damage, the energy type puncture guide wire for puncturing interatrial septum is adopted, the possibility of damage to the inner wall of the heart in room puncture can be directly avoided by the puncture method of the guide wire, meanwhile, the step of interatrial septum puncture surgery can be reduced by the use of the puncture guide wire, namely, the step of exchanging the puncture needle and the puncture guide wire is realized, and therefore, the surgery time and the damage to patients are reduced. However, with the trend of active development of medical devices, some problems may also follow, such as the number of tails used in surgery is increased due to the fact that a conducting wire needs to be connected to a guide wire for generating energy, different devices need to be connected to an energy source, too many connecting wires are caused, operation of a doctor is restricted or affected, and the safety of the surgery is greatly affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a puncture guide wire, a sheath tube and a puncture assembly so as to solve one or more problems in the prior art.

In order to solve the above technical problem, the present invention provides a puncture guide wire for use with a sheath, the puncture guide wire comprising: the puncture head end is connected to the far end of the guide wire inner core main body section, and at least the puncture head end is conductive and used for receiving energy released by the sheath tube in a wireless transmission mode to puncture.

Optionally, in the puncture guide wire, the puncture guide wire further includes a first conductive unit, the first conductive unit is disposed at the distal end of the guide wire inner core main body segment, the guide wire inner core main body segment also has conductivity, and the guide wire inner core main body segment is electrically connected to the puncture head end.

Optionally, in the puncture guide wire, the puncture guide wire further includes a second conductive unit, and the second conductive unit is disposed at the proximal end of the puncture tip end.

Optionally, in the puncture guidewire, the first conductive unit comprises a first conductive coil or a conductive coating, and the first conductive unit is arranged along the circumference of the guidewire inner core main body section.

Optionally, in the puncture guide wire, the second conductive unit includes a second conductive coil or a conductive coating, and the second conductive unit is disposed along a circumferential direction of the puncture tip.

Optionally, in the puncture guide wire, the puncture guide wire further includes an insulating section, and the puncture tip is connected to the distal end of the guide wire inner core main body section through the insulating section.

Optionally, in the puncture guide wire, the puncture guide wire further includes a polymer material layer, and the polymer material layer wraps the guide wire inner core main body segment and the puncture head end and exposes the distal end of the puncture head end.

Optionally, in the puncture guide wire, the puncture guide wire further includes a first conductive unit and a second conductive unit, the first conductive unit is disposed at the distal end of the main body segment of the guide wire inner core, the second conductive unit is disposed at the proximal end of the puncture head end, and the first conductive unit and the second conductive unit are integrally formed.

The utility model also provides a sheath which is used for being matched with the puncture guide wire, the sheath comprises a tube body and a third conductive unit arranged on the tube body, and the third conductive unit is used for releasing energy to the puncture guide wire in a wireless transmission mode so as to heat the puncture head end of the puncture guide wire.

Optionally, in the sheath, the third conductive unit is spaced from a distal end of the sheath by a predetermined distance.

Optionally, in the sheath, the third conductive unit includes a third conductive coil wound around the circumference of the tube body and a first lead electrically connected to the third conductive coil.

Optionally, in the sheath tube, the third conductive coil is disposed in a tube wall of the tube body, and is closer to an inner wall of the tube body relative to an outer wall of the tube body.

The present invention also provides a puncture assembly comprising: the puncture guide wire and the sheath tube are characterized in that the puncture guide wire is movably arranged in the sheath tube along the self axial direction.

Optionally, in the puncture assembly, the puncture guide wire further includes an insulating section, the puncture tip is connected to the distal end of the main body section of the guide wire inner core through the insulating section, and when the insulating section is completely overlapped with the third conductive unit of the sheath, the distal end of the puncture tip is located outside the sheath.

In summary, in the puncture guide wire, the sheath tube and the puncture assembly provided by the present invention, the puncture guide wire is used in cooperation with the sheath tube, the puncture guide wire includes a guide wire inner core main body segment and a puncture head end, the puncture head end is connected to a distal end of the guide wire inner core main body segment, at least the puncture head end has conductivity, and is configured to perform puncture by receiving energy released by the sheath tube; the sheath comprises a tube body and a third conductive unit arranged on the tube body, and the third conductive unit is used for releasing energy to the puncture guide wire in a wireless transmission mode so as to heat the puncture head end of the puncture guide wire. Therefore, when the puncture assembly consisting of the puncture guide wire and the sheath tube is used for puncture, the guide wire puncture is realized through an energy source, and the guide wire does not need to be provided with a tail wire, so that the influence on the operation of a doctor is reduced, and the operation safety is improved.

Furthermore, the puncture guide wire also comprises an insulating section, and the puncture head end is connected to the far end of the guide wire inner core main body section through the insulating section. Because the electric conductivity of the insulating section is smaller than that of the puncture head end and the guide wire inner core main body section, and the change of the relative position between the puncture guide wire and the sheath tube can change the electromagnetic signal generated between the puncture guide wire and the sheath tube, the relative position between the puncture guide wire and the sheath tube can be judged through the change of the electromagnetic signal between the puncture guide wire and the sheath tube, so that the carcinogenic risk caused by X-ray positioning can be avoided.

Drawings

Fig. 1 is a schematic structural view of a puncture assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a puncture assembly according to a second embodiment of the present invention;

fig. 3 is a schematic structural view of a puncture assembly provided in the third embodiment of the present invention;

fig. 4 is a schematic structural view of a puncture assembly according to a fourth embodiment of the present invention;

wherein the reference numerals are as follows:

1-puncture guide wire; 2-sheath tube; 11-a main body section of a guide wire inner core; 12-a piercing tip; 21-a third conductive element; 22-a tube body; 111-a first conductive element; 121-a second conductive element; 13-a layer of polymeric material; 14-insulating section.

Detailed Description

To make the objects, advantages and features of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently. It should be further understood that the terms "first," "second," "third," and the like in the description are used for distinguishing between various components, elements, steps, and the like, and are not intended to imply a logical or sequential relationship between various components, elements, steps, or the like, unless otherwise indicated or indicated.

In this document, "proximal" and "distal" are relative orientations, relative positions, directions of elements or actions with respect to each other from the perspective of a physician using the medical device, although "proximal" and "distal" are not intended to be limiting, but "proximal" generally refers to the end of the medical device that is closer to the physician during normal operation, and "distal" generally refers to the end that is first introduced into the patient.

[ EXAMPLES one ]

The embodiment provides a puncture guide wire, the puncture guide wire is used for being matched with a sheath tube for use, when the puncture guide wire is matched with the sheath tube and is in place, the sheath tube exposes the head end of the puncture guide wire, so that the puncture guide wire punctures target tissues by releasing energy.

Referring to fig. 1, the puncture guidewire 1 provided in this embodiment includes: the puncture needle comprises a guide wire inner core main body section 11 and a puncture head end 12, wherein the puncture head end 12 is connected to the far end of the guide wire inner core main body section 11; at least the puncture tip 12 of the guide wire inner core main body section 11 and the puncture tip 12 has conductivity and is used for receiving the energy released by the sheath in a wireless transmission mode. When the piercing tip 12 receives energy, it releases the energy to the target tissue, thereby completing the piercing process.

In the prior art, a guide wire for generating energy needs to be connected with a conductive wire, so that the number of tails used in a surgery is increased, different instruments need to be connected with an energy source, too many connecting wires are caused, the operation of a doctor is restricted or influenced, and the safety of the surgery is greatly influenced. By utilizing the puncture guide wire 1 provided by the embodiment, the puncture guide wire can be heated by receiving the energy released by the sheath tube, and when the guide wire puncture is realized through an energy source, the guide wire does not need to be provided with a tail wire, so that the influence on the operation of a doctor is reduced, and the operation safety is improved. The energy received to perform the puncturing is not particularly limited in this application, for example, in this embodiment, the energy may be radio frequency energy, and in other embodiments, the energy may also be pulsed energy or the like.

In addition, in this embodiment, the puncture guide wire 1 further includes a polymer material layer 13, and the polymer material layer 13 wraps the guide wire inner core main body segment 11 and the puncture head end 12 and exposes the distal end of the puncture head end 12.

For the existing guide wire products, in order to enable the guide wire inner core to meet certain rigidity requirements, a metal winding is often arranged on the guide wire inner core. The applicant researches and discovers that the resistance difference between the metal winding and the guide wire inner core is large, generally, the resistance of the guide wire inner core is about 10 omega, the resistance of the metal winding exceeds 600 omega, the resistance threshold of the existing radio frequency instrument is about 500 omega, and if the resistance threshold exceeds 500 omega, the safety hazard exists, so that when the metal winding is arranged on the guide wire inner core, the high requirement is brought to the energy instrument (such as the radio frequency instrument). In this embodiment, the polymer material layer 13 is used to wrap the guide wire inner core, generally, the polymer material has better electrical insulation property and certain hardness, and the guide wire inner core main body section 11 may not be disturbed by the power supply while the requirement of the rigidity of the guide wire inner core is met.

The polymer material layer 13 can be made of HDPE (high density polyethylene) or PEBAX (polyether block polyamide), is a medical polymer material, and has the characteristics of stable material performance, wear resistance, electrical insulation, good toughness and the like.

With reference to fig. 1, the present embodiment further provides a sheath 2, the sheath 2 includes a tube 22 and a third conductive unit 21, the third conductive unit 21 is disposed on the tube 22, and the third conductive unit 21 is configured to release energy to the puncture guide wire 1 in a wireless transmission manner to heat the puncture tip 12 of the puncture guide wire 1.

Preferably, the sheath 2 further comprises a flexible pipe section disposed at the most distal end of the tube body, and the flexible pipe section can reduce the hardness of the distal end of the sheath 2, so as to avoid damaging tissues.

In addition, preferably, the third conductive unit 21 is spaced from the farthest end of the sheath tube 2 by a predetermined distance, so as to avoid damage to the tissue when the third conductive unit 21 generates heat, or avoid increasing the hardness of the far end of the sheath tube 2, for example, the third conductive unit 21 is disposed on the tube body of the sheath tube 2 instead of the flexible tube section.

In this embodiment, the third conductive unit 21 includes a third conductive coil wound around the tube 22 in a circumferential direction, and preferably, the third conductive coil is embedded in the wall of the tube 22 and is closer to the inner wall of the tube 22 than to the outer wall of the tube, and the third conductive coil is used to release energy to heat the puncture tip 12 of the puncture guide wire 1.

Further, a first lead (not shown in the figure) electrically connected to the third conductive coil is further embedded in the wall body of the tube body 22, a distal end of the first lead is electrically connected to the third conductive coil, and a proximal end of the first lead may be disposed in the handle of the sheath for electrically connecting to an external energy meter.

In other embodiments, the third conductive element 21 may also be configured to transmit energy, so long as the released energy is received by the puncture guide wire and then punctured.

The embodiment also provides a puncture assembly, the puncture assembly includes that this embodiment provides puncture seal wire 1 with sheath 2, puncture seal wire 1 with sheath 2 cooperates the use, puncture seal wire 1 is along the movably dress of wearing to locate of self axial sheath 2.

When the puncture guide wire 1 and the sheath tube 2 are used in a matched manner, the sheath tube 2 can be controlled to reach a target tissue position, and then the puncture guide wire 1 is controlled to move from the near end to the far end of the sheath tube 2 in the sheath tube 2 until the puncture guide wire 1 penetrates out of the sheath tube 2 and further penetrates through the target tissue.

In view of the puncturing assembly provided in the present embodiment, the present embodiment further provides a puncturing method, including the following steps:

when the puncture guide wire 1 moves in the sheath 2, energy is transmitted to the third conductive unit 21 of the sheath 2 through the first lead, so that the third conductive unit 21 releases energy to the puncture guide wire 1 in a wireless charging manner to heat the puncture head end 12 until the puncture guide wire 1 punctures a target tissue.

When the puncture assembly provided by the embodiment is used for puncture, the position of the puncture guide wire 1 can be positioned by adopting an X-ray, so that in order to avoid energy waste or unexpected damage, after the puncture guide wire 1 moves in the sheath tube 2 for a period of time, the radio frequency equipment is manually started, and the time interval from the beginning of moving the puncture guide wire 1 to the beginning of discharging the radio frequency equipment can be adjusted according to practical application; the operator can turn the RF device on or off in conjunction with the actual hand feeling of the X-ray.

[ second example ] of this example

Referring to fig. 2, in order to improve the energy transfer effect, unlike the first embodiment, in the present embodiment, a conductive unit is disposed on the main body segment of the guide wire core and the end of the puncture tip to increase the conductivity. Therefore, the puncture guide wire 1 provided in this embodiment further includes a first conductive unit 111 and a second conductive unit 121, the first conductive unit 111 is disposed on the guide wire inner core main body segment 11, and the second conductive unit 121 is disposed on the puncture tip 12. The first conductive unit 111 and the second conductive unit 121 can both increase the conductivity of the puncture guide wire 1, so that the energy transmission effect with the sheath can be improved.

Further, as shown in fig. 2, in order to realize the final puncture without wasting energy, the first conductive element 111 may be disposed only at the distal end of the guide wire core body segment 11 and has a first set length along the axial direction of the guide wire core body segment 11, and the second conductive element 121 may be disposed only at the proximal end of the puncture tip 12 and has a second set length along the axial direction of the puncture tip. Alternatively, the first conductive unit 111 and the second conductive unit 121 may be integrally formed.

The puncture guide wire in this embodiment is different from the puncture guide wire in the first embodiment only in the arrangement of the first conductive unit 111 and the second conductive unit 121, and therefore, the description of the same parts is omitted.

In the present application, the form in which the first conductive unit 111 and the second conductive unit 121 implement conductivity does not limit the two embodiments. For example, in this embodiment, the first conductive element 111 may preferably comprise a first conductive coil, and the second conductive element 121 may preferably comprise a second conductive coil, the first and second conductive coils being disposed circumferentially around the guidewire core body segment and the puncture tip, respectively, in a manner that provides the most efficient and safe wireless energy transfer. Of course, in other embodiments, the first conductive element 111 and the second conductive element 121 may further include conductive coatings applied to the outer peripheries of the inner core body segment of the guide wire and the puncture tip, respectively, in which case the current transmission requirement for the third conductive element 21 may be high and a certain strength may be required.

In other embodiments, the puncture guidewire may also include only the first conductive element 111 or only the second conductive element 121. When the puncture guide wire only comprises the first conductive unit 111, the guide wire inner core main body section 11 and the puncture head end 12 are electrically conducted and both have conductivity; when the puncture guide wire only comprises the second conductive unit 121, the puncture tip 12 has conductivity, and the guide wire core main body segment 11 may have conductivity or not, as long as it is ensured that the puncture tip 12 can finally obtain energy for puncture by means of wireless transmission.

The puncture guide wire in the above embodiment is also suitable for matching with the sheath tube in the first embodiment and combining into a puncture assembly to implement the same puncture method as in the first embodiment.

For the puncture guide wires in the first and second embodiments, the energy transmission of the third conductive unit 21 in the sheath can be turned on or off manually by the physician, for example, when the operator pushes the puncture head of the guide wire against the atrial septum, the operator can feel resistance, and at this time, the third conductive unit 21 in the sheath can be selectively turned on to conduct, so that the head end of the guide wire starts to generate heat and realize puncture by means of wireless transmission. The guide wire to be punctured penetrates through the interatrial septum, the operator then manually closes the conduction of the third conductive unit 21, and the conduction of the third conductive unit 21 can be opened and closed through an operation button arranged on the sheath tube handle, which is not described in detail in the utility model.

[ EXAMPLE III ]

The puncture guide wire in this embodiment is similar to the puncture guide wire in the first embodiment, and the same parts are not described again. Unlike the first embodiment, as shown in fig. 3, the puncture guide wire 1 further includes an insulating section 14, and the puncture tip 12 is connected to the distal end of the guide wire core main body section 11 through the insulating section 14, by this design, automatic termination of wireless energy transmission can be achieved, specifically, since the puncture tip 12 is separated from the guide wire core main body section 11 by the insulating section 14, when the puncture guide wire 1 passes towards the proximal end of the sheath tube 2, and the insulating section 14 at the distal end of the puncture tip 12 is axially far away from the third conductive unit 21 until being completely staggered, the third conductive unit 21 will automatically stop heating the puncture tip 12, thereby achieving semi-automatic control of energy transmission and further improving the safety of the operation.

The insulating section 14 can be made of polymer materials, such as medical polymer materials like HDPE or PEBAX, and has the characteristics of stable material performance, wear resistance, electrical insulation, good toughness and the like. In actual processing, the insulating section may be integrally formed with the polymer material layer 13 by extrusion molding, reflow (reflow) or other processes.

[ EXAMPLE IV ]

The puncture guide wire in this embodiment is similar to the puncture guide wire in the second embodiment, and the same parts are not described again. Unlike the second embodiment, as shown in fig. 4, the puncture guide wire 1 further includes an insulating segment 14, and the puncture tip 12 is connected to the distal end of the guide wire core main body segment 11 through the insulating segment 14, and by proper dimensioning, it can be realized that when the insulating segment 14 moves toward the distal end of the sheath 2 and completely overlaps with the third conductive element 21 of the sheath 2, the distal end of the puncture tip 12 starts to pass out of the sheath 2. It is understood that "overlap" here means that the third conductive element 21 covers the insulating segment 14 on an axial projection plane of the puncture guide wire.

The insulating section 14 may be made of a polymer material, for example, HDPE or PEBAX, and has the characteristics of stable material performance, wear resistance, electrical insulation, good toughness, and the like. In actual processing, the insulating section 14 may be integrally formed with the polymer material layer 13 by extrusion molding, reflow (reflow) or other processes.

Referring to fig. 4, unlike the second embodiment, in the present embodiment, when the puncture guide wire 1 includes the first conductive unit 111 and the second conductive unit 121, since the first conductive unit 111 is disposed at the distal end of the guide wire core main body section 11 and the second conductive unit 121 is disposed at the proximal end of the puncture tip 12, the first conductive unit 111 and the second conductive unit 121 are connected through the insulating section 14, and at this time, the two are not integrally formed.

Since the electrical conductivity of the insulating section 14 is smaller than the electrical conductivity of the first conductive element 111 on the guide wire inner core main body section 11 and the second conductive element 121 on the puncture tip 12, when the puncture guide wire 1 moves from the proximal end to the distal end of the sheath 2 in the sheath 2, the relative position between the puncture guide wire 1 and the third conductive element 21 of the sheath 2 changes, so that the electromagnetic signal generated between the puncture guide wire 1 and the sheath 2 changes, and thus the relative position between the puncture guide wire 1 and the sheath 2 can be determined by the change of the electromagnetic signal between the puncture guide wire 1 and the sheath 2.

Based on puncture seal wire 1 that this embodiment provided with sheath 2, this embodiment still provides a puncture assembly, puncture assembly includes that this embodiment provides puncture seal wire 1 with sheath 2, puncture seal wire 1 with sheath 2 cooperates the use, puncture seal wire 1 along self axial movably wear to locate sheath 2.

The puncture guide wire 1 moves from the proximal end to the distal end of the sheath 2 in the sheath 2, when the second conductive unit 121 is partially overlapped with the third conductive unit 21, an electromagnetic signal is generated between the sheath 2 and the puncture guide wire 1, the electromagnetic signal is gradually increased, when the second conductive unit 121 is completely overlapped with the third conductive unit 21, the electromagnetic signal between the sheath 2 and the puncture guide wire 1 reaches the maximum, then the insulating section 14 is partially overlapped with the third conductive unit 21, the electromagnetic signal between the sheath 2 and the puncture guide wire 1 is gradually decreased, when the insulating section 14 is completely overlapped with the third conductive unit 21, the electromagnetic signal between the sheath 2 and the puncture guide wire 1 is decreased to the minimum, then when the first conductive unit 111 is partially overlapped with the third conductive unit 21, the electromagnetic signal between the sheath tube 2 and the puncture guide wire 1 is gradually increased. That is, based on the above-described design of the third conductive element 21 of the sheath 2, and the first conductive element 111, the insulating section 14, and the second conductive element 121 of the puncture guidewire 1, during the movement of the puncture guidewire 1 in the sheath 2, electromagnetic signals between the two appear: the puncture guide wire 1 is increased and then decreased, and then the position of the puncture guide wire 1 in the sheath tube 2 can be judged by monitoring the change of the electromagnetic signal between the puncture guide wire and the sheath tube based on the rule. Preferably, the axial length L2 of the insulating section 14 is not greater than the axial length L1 of the third conductive element 21, so that the electromagnetic signal between the sheath 2 and the puncture guide wire 1 is decreased to the minimum value and then increased, and thus the third conductive element 21 can be precisely controlled to stop transmitting energy based on the electromagnetic signal change node, so that the accuracy of monitoring the change of the electromagnetic signal between the sheath 2 and the puncture guide wire 1 by the monitoring device to determine whether to stop transmitting energy to the third conductive element 21 can be improved.

In view of this, the present embodiment further provides an electronic device, where the electronic device is configured to connect to the puncture assembly provided in this embodiment, and when receiving an operation instruction, the electronic device performs the following steps:

monitoring the size of an electromagnetic signal between the sheath tube 2 and the puncture guide wire 1 when the puncture guide wire 1 moves in the sheath tube 2;

when an electromagnetic signal generated between the sheath 2 and the puncture guide wire 1 is monitored, transmitting energy to the third conductive unit 21, so that the third conductive unit 21 releases energy to the puncture guide wire 1 to heat the puncture tip end 12; and the number of the first and second groups,

continuously judging whether the insulating section 14 and the third conductive unit 21 are completely overlapped according to the monitored size of the electromagnetic signal generated between the sheath tube 2 and the puncture guide wire 1, and if so, stopping transmitting energy to the third conductive unit 21; if not, energy continues to be transmitted to the third conductive element 21.

When a product is designed, a range interval of the electromagnetic signal magnitude when the insulating section 14 and the third conductive unit 21 are completely overlapped can be obtained by performing a plurality of repeated tests on the electromagnetic signal generated when the insulating section 14 and the third conductive unit 21 are completely overlapped, and once the monitored electromagnetic signal magnitude falls within the range interval, the insulating section 14 and the third conductive unit 21 are considered to be completely overlapped.

In the above puncturing procedure of the present embodiment, as described in the first embodiment, the third conducting unit 21 is electrically connected to an external radio frequency device through a first wire, and energy generated by the radio frequency device is transmitted to the third conducting unit 21 through the first wire, so that the third conducting unit 21 releases energy to the puncturing guide wire 1. In addition, in this embodiment, the third conductive unit 21 may be electrically connected to an external electromagnetic signal monitoring device through a second wire, and an electromagnetic signal generated between the sheath 2 and the puncture guide wire 1 is transmitted to the electromagnetic signal monitoring device through the second wire, so that the relative position between the puncture guide wire and the sheath can be determined through the change of the electromagnetic signal between the puncture guide wire and the sheath, and therefore, the carcinogenic risk caused by X-ray localization can be avoided.

In summary, in the puncture guide wire, the sheath and the puncture assembly provided in the embodiments of the present invention, the puncture guide wire is used in cooperation with the sheath, the puncture guide wire includes a guide wire inner core main body segment and a puncture head end, the puncture head end is connected to a distal end of the guide wire inner core main body segment, at least the puncture head end has conductivity, and is configured to receive energy released by the sheath in a wireless transmission manner to perform puncture; the sheath comprises a tube body and a third conductive unit arranged on the tube body, and the third conductive unit is used for releasing energy to the puncture guide wire in a wireless transmission mode so as to heat the puncture head end of the puncture guide wire. Therefore, when the puncture assembly consisting of the puncture guide wire and the sheath tube is used for puncture, guide wire puncture is realized through an energy source, and the guide wire does not need to be provided with a tail wire, so that the influence on the operation of a doctor is reduced, and the operation safety is improved. In addition, when the puncture assembly is used for puncture, the sheath tube can judge the relative position between the puncture guide wire and the sheath tube by using the energy released by the puncture guide wire through the sheath tube, so that the carcinogenic risk caused by X-ray positioning can be avoided.

It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, similar parts between the embodiments may be referred to each other, and different parts between the embodiments may also be used in combination with each other, which is not limited by the present invention.

It should be understood, however, that the intention is not to limit the utility model to the particular embodiments described. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the utility model without departing from the scope of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention, unless the content of the technical solution of the present invention is departed from.

Claims (14)

1. A puncture guidewire for use with a sheath, the puncture guidewire comprising: the puncture head end is connected to the far end of the guide wire inner core main body section, and at least the puncture head end is conductive and used for receiving energy released by the sheath tube in a wireless transmission mode to puncture.

2. The puncture guidewire of claim 1, further comprising a first conductive element disposed at the distal end of the guidewire core body segment, the guidewire core body segment also being electrically conductive, the guidewire core body segment being electrically connected to the puncture tip.

3. The puncture guidewire of claim 1 or 2, further comprising a second conductive element disposed proximal to the puncture tip.

4. The puncture guidewire of claim 2, wherein the first conductive element comprises a first conductive coil or conductive coating, the first conductive element being disposed circumferentially along the guidewire core body segment.

5. The puncture guidewire of claim 3, wherein the second conductive element comprises a second conductive coil or conductive coating, the second conductive element being disposed circumferentially about the puncture tip.

6. The puncture guidewire of claim 1, further comprising an insulating segment, wherein the puncture tip is attached to the distal end of the guidewire core body segment via the insulating segment.

7. The puncture guidewire of claim 1, further comprising a layer of polymeric material that wraps around the guidewire core body segment and the puncture tip and exposes a distal end of the puncture tip.

8. The puncture guidewire of claim 1, further comprising a first conductive element disposed at the distal end of the guidewire inner core body segment and a second conductive element disposed at the proximal end of the puncture tip, the first conductive element and the second conductive element being integrally formed.

9. The sheath tube is characterized by being used in cooperation with a puncture guide wire, the sheath tube comprises a tube body and a third conductive unit arranged on the tube body, and the third conductive unit is used for releasing energy to the puncture guide wire in a wireless transmission mode so as to heat a puncture head end of the puncture guide wire.

10. The sheath of claim 9, wherein the third conductive element is spaced a predetermined distance from a distal-most end of the sheath.

11. The sheath of claim 9, wherein the third conductive element comprises a third conductive coil wound around the circumference of the tube and a first conductive wire electrically connected to the third conductive coil.

12. The sheath of claim 11, wherein the third conductive coil is disposed within a wall of the tube and is closer to an inner wall of the tube than an outer wall of the tube.

13. A spike assembly, comprising: the puncture guide wire according to any one of claims 1 to 7 and the sheath according to any one of claims 9 to 12, wherein the puncture guide wire is movably inserted through the sheath in the axial direction thereof.

14. The puncture assembly of claim 13, wherein said puncture guidewire further comprises an insulating segment, said puncture tip connected to a distal end of said guidewire core body segment by said insulating segment, said distal end of said puncture tip being positioned outside said sheath when said insulating segment is fully overlapped by said third conductive element of said sheath.

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