CN112472954A

CN112472954A - Intervene sheath pipe system with two seal wires

Info

Publication number: CN112472954A
Application number: CN202011471948.7A
Authority: CN
Inventors: 汤文凯
Original assignee: Bengbu Guanshuo Medical Technology Co ltd
Current assignee: Bengbu Guanshuo Medical Technology Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-03-12

Abstract

The invention provides an interventional sheath system with double guide wires, which comprises a positioning guide wire, an interventional sheath and an operating guide wire, wherein the side wall of the interventional sheath is respectively provided with a first puncture hole and a second puncture hole, the first puncture hole and the second puncture hole are arranged along the axis of the interventional sheath in a central symmetry manner, the second puncture hole is communicated with an operating guide wire backspacing groove, the positioning guide wire penetrates into the interventional sheath through an outlet of the sheath and penetrates out of the first puncture hole, the diameter of the positioning guide wire is larger than the grooving width of the operating guide wire backspacing groove, the diameter of the operating guide wire is smaller than the grooving width of the operating guide wire backspacing groove, only a small section of area of the interventional sheath penetrates through the outside of the positioning guide wire through the arrangement of the first puncture hole and the second puncture hole, and simultaneously, after the interventional sheath reaches a lesion part, a stent can be quickly released after being withdrawn, the wire feeding device is particularly suitable for feeding guide wires to reversely bent blood vessels, greatly reduces the wire feeding difficulty of the reverse bending, and reduces the wire feeding time.

Description

Intervene sheath pipe system with two seal wires

Technical Field

The invention relates to the technical field of interventional instruments, in particular to an interventional sheath system with double guide wires.

Background

The interventional therapy is a minimally invasive therapy which is carried out by utilizing modern high-tech means, a doctor introduces special catheters, guide wires and other precise instruments into a human body under the guidance of medical imaging equipment to diagnose and locally treat internal pathological conditions, the interventional therapy applies a digital technology, the visual field of the doctor is expanded, the two hands of the doctor are prolonged by the guide wires through the catheters, the incision of the doctor is only the size of rice grains, the human tissue is not required to be cut, the interventional therapy has the characteristics of no operation, small wound, quick recovery and good effect, and is the development trend of future medicine, and the interventional sheath (namely the catheter) in the prior art generally has the following problems:

1. the sheath tube reaches a diseased part under the guidance of the guide wire, but the sheath tube is completely sleeved outside the guide wire, the sheath tube is pushed to the diseased part along a path established by the guide wire by pushing the sheath tube to feed forwards, but the guide wire is completely arranged inside the sheath tube, the inner wall of the sheath tube has certain friction on the guide wire in the feeding process, when the sheath tube enters a tortuous coronary artery, the sheath tube needs to advance and retreat back and forth to ensure that the advancing of the sheath tube is not blocked by the bifurcation of a blood vessel, and in the process, the guide wire can be displaced due to the incapability of fixing, so that the sheath tube can not reach the diseased part smoothly;

2. after the sheath reaches the lesion part, the guide wire needs to be withdrawn so as to send the instruments such as the vascular stent into the body, and the guide wire is completely positioned in the sheath, so that the devices such as the stent can be sent only after the guide wire is completely withdrawn, and the operation speed is influenced to a certain extent;

3. due to the characteristic of circuitous bifurcation inside a blood vessel, whether a guide wire can successfully reach a diseased region becomes a key factor for success or failure of an interventional operation, for a reversely bent blood vessel, the guide wire is difficult to enter the diseased blood vessel, a large amount of time is often consumed for operation of the guide wire, the process that the guide wire enters the reversely bent blood vessel has certain contingency, and a patient often causes that the operation scheme is changed because the guide wire channel cannot be established in the interventional process, so that the operation risk and the economic burden of the patient are increased.

An interventional catheter with a patent application number of "CN 201510069402.1" in the prior art includes a catheter body, a side hole communicated with a lumen of the catheter body is arranged on a wall of the catheter body, the interventional catheter further includes a reinforcing layer arranged on the wall of the catheter, the reinforcing layer corresponds to a distribution area of the side hole, and the interventional catheter provided by the technical scheme solves the problems that an interventional catheter with a side hole in the background art is easy to break at the side hole and has insufficient strength; the device is a common sheath type in the prior art, and the defects also exist.

The invention aims to design a double-guide-wire interventional sheath system which can overcome the defects.

Disclosure of Invention

The present invention is directed to a sheath system with dual guide wires to solve the above-mentioned problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an intervene sheath pipe system with two seal wires, is including the location seal wire, intervene sheath pipe and operation seal wire, intervene sheath pipe lateral wall and seted up first puncture hole and second puncture hole respectively, first puncture hole and second puncture hole are central symmetry formula setting along interveneeing sheath pipe circular cross-section axle center, second puncture hole and operation seal wire backset intercommunication, operation seal wire backset extends to the export of sheath pipe along interveneeing sheath pipe direction of feed, the location seal wire penetrates through the export of sheath pipe and intervenes the inside and wear out from first puncture hole of sheath pipe, the operation seal wire is kept away from sheath pipe export one end through intervene sheath pipe and finally penetrates and wear out through the second puncture hole, the diameter of location seal wire is greater than operation seal wire backset fluting width, the diameter of operation seal wire is less than operation seal wire backset fluting width.

Preferably, the intervention sheath tube is sequentially provided with an inner layer, a reinforcing layer and an outer layer from inside to outside, and the reinforcing layer is of a grid-shaped woven structure.

Preferably, the grid-like braided structure is composed of one or more of nitinol, platinum-iridium alloy, and stainless steel.

Preferably, the outer surface of the outer layer of the interventional sheath, the positioning guide wire and the operating guide wire are coated with hydrophilic lubricating coatings.

Compared with the prior art, the invention has the beneficial effects that:

1. the positioning guide wire is arranged on the intervention sheath tube in a penetrating mode through the first puncture hole, and only a small section of the intervention sheath tube is arranged outside the positioning guide wire in a penetrating mode, so that the positioning guide wire can be extended to one end outside the body to be held and fixed in the penetrating process of the intervention sheath tube, the intervention sheath tube is guaranteed not to influence the positioning guide wire in the feeding process, and the intervention sheath tube is fully guaranteed to enter a lesion part smoothly;

2. according to the invention, only a small section of the intervention sheath tube is arranged outside the positioning guide wire in a penetrating manner, so that a stent release device and the like can be arranged inside the intervention sheath tube in a penetrating manner, when the intervention sheath tube reaches a lesion part, the stent can be released quickly after the guide wire is withdrawn, the defect that the stent is pushed after the guide wire is completely withdrawn in the traditional sheath tube is overcome, the operation time is greatly saved, and the operation risk is reduced;

3. the invention is particularly suitable for feeding the guide wire to the reversely bent blood vessel by operating the arrangement of the guide wire, and the guide wire is inserted into the sheath tube after the feeding process is finished, so that the guide wire can quickly enter the reversely bent blood vessel along the channel established by operating the guide wire, thereby greatly reducing the wire feeding difficulty of the reverse bend and reducing the wire feeding time.

According to the invention, only a small section of area of the intervention sheath tube is arranged outside the positioning guide wire in a penetrating manner through the arrangement of the first puncture hole and the second puncture hole, so that the intervention sheath tube is ensured not to influence the positioning guide wire in the feeding process, and meanwhile, after the intervention sheath tube reaches a lesion part, the guide wire can be quickly released after the guide wire is withdrawn, so that the intervention sheath tube is particularly suitable for feeding the guide wire to the reversely bent blood vessel, the thread feeding difficulty of the reverse bend is greatly reduced, and the thread feeding time is reduced.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a perspective view of the interventional sheath according to the present invention;

FIG. 3 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 4 is a schematic view of a reinforcement layer structure of the present invention;

FIG. 5 is a schematic view of an interventional sheath of the present invention reaching a vessel bifurcation of a reverse bend;

FIG. 6 is a schematic view of an operative guidewire of the present invention entering a reverse bend vessel bifurcation;

FIG. 7 is a schematic view of the access sheath retracted and rotated 180 degrees in accordance with the present invention;

fig. 8 is a schematic view of the bifurcation of the intervention sheath into the reversely bent blood vessel of the present invention.

In the figure: the positioning guide wire comprises a positioning guide wire 1, an intervention sheath tube 2, an operation guide wire 3, a first puncture hole 4, a second puncture hole 5, an operation guide wire retraction groove 6, a sheath tube outlet 7, an inner layer 8, a reinforcing layer 9 and an outer layer 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example (b):

referring to fig. 1-8, the present invention provides a technical solution:

an intervention sheath system with double guide wires comprises a positioning guide wire 1, an intervention sheath 2 and an operation guide wire 3, wherein the side wall of the intervention sheath 2 is respectively provided with a first puncture hole 4 and a second puncture hole 5, the first puncture hole 4 and the second puncture hole 5 are arranged along the axis of the circular section of the intervention sheath 2 in a central symmetry manner, the second puncture hole 5 is communicated with an operation guide wire backspacing groove 6, the operation guide wire backspacing groove 6 extends to a sheath outlet 7 along the feeding direction of the intervention sheath 2, the positioning guide wire 1 penetrates into the intervention sheath 2 through the sheath outlet 7 and penetrates out from the first puncture hole 4, the operation guide wire 3 penetrates through one end of the intervention sheath 2 far away from the sheath outlet 7 and finally penetrates out through the second puncture hole 5, the diameter of the positioning guide wire 1 is larger than the slotting width of the operation guide wire backspacing groove 6, the diameter of the operation guide wire 3 is smaller than the slotting width of the operation guide wire backspacing groove 6, the positioning guide wire 1 cannot enter into the second puncture hole 5 through the operation, the operation guide wire 3 can move out of the second puncture hole 5 through the operation guide wire retraction groove 6, and through the operation, after the operation guide wire 3 enters the reversely bent bifurcated vessel, the operation guide wire 3 can be separated from the second puncture hole 5 and enter the reversely bent bifurcated vessel through 180-degree rotation of the intervention sheath tube 2.

Preferably, the intervention sheath 2 is sequentially provided with an inner layer 8, a reinforcing layer 9 and an outer layer 10 from inside to outside, the reinforcing layer 9 is of a grid-shaped braided structure, the end part of the intervention sheath 2 keeps certain structural strength through the reinforcing layer 9, and the intervention device such as a stent is prevented from being influenced by expansion of the operation guide wire backspacing groove 6.

Preferably, the lattice-like braided structure is composed of one or more of nitinol, platinum-iridium alloy, and stainless steel.

Preferably, the outer surface of the outer layer of the interventional sheath 2, the positioning guide wire 1 and the operation guide wire 3 are coated with hydrophilic lubricating coatings.

The using method comprises the following steps: firstly, the blood vessel operation with convenient advance and retreat of the guide wire is as follows: the method comprises the following steps:

the positioning guide wire 1 and the intervention sheath tube 2 are utilized, a blood vessel channel is established in vitro, the positioning guide wire 1 enters the body through the blood vessel channel and finally reaches a diseased part, after the positioning guide wire 1 reaches the diseased part, the intervention sheath tube 2 is arranged on the positioning guide wire 1 in a penetrating way through a sheath tube outlet 7 and a first puncture hole 4, and the positioning guide wire 1 is utilized to provide guidance for feeding of the intervention sheath tube 2, so that the intervention sheath tube 2 is sent to the diseased part;

step two: after the position of the patient is reached, the positioning guide wire 1 is retracted, and simultaneously the interventional equipment such as a vascular stent and the like can be fed, and because only one part of the front end of the positioning guide wire 1 is arranged in the interventional sheath 2 in a penetrating way, the feeding of the interventional equipment is not influenced, and the time of interventional operation is greatly saved.

Secondly, feeding operation of the guide wire in the reversely bent blood vessel: the method comprises the following steps:

establishing a main blood vessel channel by using the positioning guide wire 1, penetrating the operation guide wire 3 into the intervention sheath 2 and out of the second puncture hole 5, shaping the head end of the operation guide wire 3, leading the operation guide wire 3 and the intervention sheath 2 to reach the bifurcation part of the reversely bent blood vessel under the guidance of the positioning guide wire 1, leading the second puncture hole 5 to be opposite to the reversely bent bifurcation part under the guidance of a contrast agent, referring to the attached drawing 5 of the specification, and at the moment, pushing the operation guide wire 3 to feed so as to lead the operation guide wire to smoothly enter the reversely bent bifurcation blood vessel under the support of the intervention sheath 2 and finally reach the lesion part, referring to the attached drawing 6 of the specification;

step two: withdrawing the positioning guide wire 1 until the positioning guide wire is moved out of the body, simultaneously withdrawing the intervention sheath tube 2, so that the operation guide wire 3 is separated from the second puncture hole 5 through an operation guide wire withdrawing groove 6 formed in the intervention sheath tube 2, and rotating the intervention sheath tube 2 for 180 degrees at the moment, referring to the attached figure 7 of the specification;

step three: keeping the operation guide wire 3 fixed, pushing the intervention sheath tube 2, and forcing the intervention sheath tube 2 to enter a diseased part along a channel penetrated by the operation guide wire 3 due to the support of the inner bend of the operation guide wire 3 on the inner wall of the intervention sheath tube 2, thereby completing the establishment of a sheath tube channel of the bifurcate reverse bend blood vessel, and referring to the attached figure 8 of the specification;

step four: the operation guide wire 3 is withdrawn, and interventional equipment such as a vascular stent reaches a diseased part through a channel inside the interventional sheath 2, so that the diseased part is dredged and the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An intervention sheath system with double guide wires, which comprises a positioning guide wire (1), an intervention sheath (2) and an operation guide wire (3), and is characterized in that: the side wall of the intervention sheath tube (2) is respectively provided with a first puncture hole (4) and a second puncture hole (5), the first puncture hole (4) and the second puncture hole (5) are arranged along the axis of the circular section of the intervention sheath tube (2) in a central symmetry manner, the second puncture hole (5) is communicated with an operation guide wire backspacing groove (6), the operation guide wire backspacing groove (6) extends to a sheath outlet (7) along the feeding direction of the intervention sheath (2), the positioning guide wire (1) penetrates into the intervention sheath tube (2) through the sheath tube outlet (7) and penetrates out of the first puncture hole (4), the operation guide wire (3) penetrates through the intervention sheath tube (2) far away from one end of the sheath tube outlet (7) and finally penetrates out through the second puncture hole (5), the diameter of the positioning guide wire (1) is larger than the slotting width of the operation guide wire backspacing groove (6), the diameter of the operating guide wire (3) is smaller than the slotting width of the operating guide wire backspacing groove (6).

2. The interventional sheath system of claim 1, wherein: intervene sheath pipe (2) and from inside to outside set gradually inlayer (8), enhancement layer (9) and skin (10), enhancement layer (9) are the grid form and weave the structure.

3. The interventional sheath system of claim 2, wherein: the grid-shaped braided structure is composed of one or more of nickel-titanium alloy, platinum-iridium alloy and stainless steel.

4. The interventional sheath system of claim 2, wherein: hydrophilic lubricating coatings are coated on the outer surface of the outer layer of the intervention sheath tube (2), the surfaces of the positioning guide wire (1) and the operation guide wire (3).