CN113041477A

CN113041477A - Bidirectional blood vessel guiding sheath

Info

Publication number: CN113041477A
Application number: CN201911373782.2A
Authority: CN
Inventors: 宋庆宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-06-29

Abstract

The invention provides a bidirectional blood vessel guiding sheath, belongs to the technical field of medical appliances, and aims to overcome the defects that common blood vessel guiding sheaths in the market are unidirectional, and two sides need to enter simultaneously when bilateral superficial femoral artery lesions are treated simultaneously, and two puncture points are left; the sheath tube assembly comprises a sheath tube and a sheath tube accessory, the rear part of the sheath tube is connected with the sheath tube accessory, the front end of the sheath tube is split into two semicircular sheath sheets along the axial direction of the sheath tube, and elastic metal wires are arranged inside the tube walls of the semicircular sheath sheets; the split type structure is arranged at the front end of the original sheath tube, so that the guide sheath can be used as a common guide sheath, when bilateral limb lesions exist at the same time, the problem can be solved at the same puncture point at the same time, the puncture position of the vascular operation is reduced, the pain of the patient is relieved, and the incidence rate of postoperative complications can be reduced.

Description

Bidirectional blood vessel guiding sheath

Technical Field

The invention relates to the technical field of medical appliances, in particular to a bidirectional blood vessel guiding sheath.

Background

The vascular catheter is a necessary surgical instrument for blood vessel intraluminal treatment operation, and can be fed into the guide wire/catheter/saccule, stent and other surgical instruments through the guide sheath retained in the blood vessel, thereby achieving the effects of no injury to the blood vessel wall, less surgical bleeding and the like. The current blood vessel guide sheaths commonly used in domestic and international markets are all one-way puncture reserved blood vessel guide sheaths. When the pathological changes of the superficial femoral arteries at two sides are treated at the same time, the patients need to enter the way at two sides at the same time, the pain of the patients is increased, the operation time and the operation difficulty are increased, and the postoperative complications such as bleeding at the puncture part, pseudo aneurysm, arteriovenous fistula, deep venous thrombosis of lower limbs and the like are easy to occur.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide the bidirectional blood vessel guiding sheath, the split structure is arranged at the front end of the original sheath tube, the bidirectional blood vessel guiding sheath can be used as a common guiding sheath, when bilateral limb lesions exist at the same time, the problem can be solved at the same puncture point at the same time, the puncture position of the blood vessel operation is reduced, the pain of a patient is relieved, and the incidence rate of postoperative complications can be reduced.

In order to solve the technical problems, the invention adopts the following technical scheme:

the bidirectional blood vessel guiding sheath comprises a sheath tube component and a sheath core component, wherein the sheath tube component comprises a sheath tube and a sheath tube accessory, the sheath tube is provided with a through sheath tube inner cavity, the rear part of the sheath tube is connected with the sheath tube accessory, and the sheath core component is inserted into the sheath tube inner cavity from the sheath tube accessory and moves axially along the sheath tube inner cavity; and the sheath pipe accessory is provided with a control valve for controlling the action of the elastic metal wire, and the elastic metal wire is connected with the control valve.

Preferably, the semicircular sheath pieces have a length of 2.5 mm.

The invention has the beneficial effects that: this design can regard as ordinary guide sheath to use through setting up split structure at original sheath pipe front end, when having bilateral limbs pathological change simultaneously, can solve simultaneously at same puncture point, reduces vascular operation puncture position, alleviates the misery of patient, and can reduce the incidence of postoperative complication.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a bidirectional vascular guide sheath provided in an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Description of reference numerals:

sheath 1, sheath core subassembly 2, control valve 3, sheath annex 4, semi-circular sheath piece 5, elastic metal line 6.

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.

As shown in fig. 1 to 2, the bidirectional blood vessel guiding sheath includes a sheath assembly and a sheath core assembly 2, the sheath assembly includes a sheath 1 and a sheath accessory 4, the sheath 1 has a through sheath lumen, the sheath accessory 4 is connected to the rear of the sheath 1, the sheath core assembly 2 is inserted into the sheath lumen from the sheath accessory 4 and moves axially along the sheath lumen, the front end of the sheath 1 is split into two semicircular sheath pieces 5 along the axial direction of the sheath, and the length of the semicircular sheath pieces 5 is 2.5 mm; the semicircular sheath pieces 5 can be rotated and bent to 90 degrees, and the two semicircular sheath pieces 5 can be bent simultaneously to form a T shape with an angle of 180 degrees; a channel is arranged in the tube wall of the semicircular sheath piece 5, an elastic metal wire 6 is arranged in the channel, and the elastic metal wire 6 penetrates through the tube wall of the sheath tube 1 and extends into the sheath tube accessory 4; the sheath pipe accessory 4 is provided with a control valve 3 for controlling the action of the elastic metal wire 6, the elastic metal wire 6 is connected with the control valve 3, and the bending action and the straightening action of the elastic metal wire 6 can be controlled by the control valve 3. The elastic metal wire 6 has an ultra-strong function of returning to a straight line, and after the control valve 3 is reversely dialed, the elastic metal wire 6 is instantly returned to a straight line, so that the front end of the split sheath tube 1, namely the semicircular sheath piece 5 is returned to an initial closed state. When accomplishing one side pathological change position operation, when preparing to go the opposite side operation, pull open both sides control valve 3, can make the semicircular sheath piece 5 of homonymy that control valve 3 is connected split into 90 degrees angles through built-in elastic metal line 6, all open the back when two sides, semicircular sheath piece 5 is the T font, withdraw sheath pipe 1 this moment, form the resistance when arriving the puncture opening position between sheath pipe 1 can and the vascular wall, stop withdrawing and the radiography at this moment confirms that the sheath pipe is located the vascular puncture position inside and with the vascular wall laminating. The guide wire is fed from the tail end of the sheath tube 1 and is over-selected to the blood vessel in the opposite direction of the original operation, and the special catheter is fed along the guide wire and exceeds the semicircular sheath sheet 5. At this time, the control valve 3 on the sheath tube accessory 4 is pulled to make the semicircular sheath piece 5 return to the initial closed state again through the two metal wires, thereby achieving the purposes of keeping the vessel wall alive and preventing bleeding.

The split structure is arranged at the front end of the original sheath tube, so that the split type guide sheath can be used as a common guide sheath, when bilateral limb lesions exist at the same time, the problem can be solved at the same puncture point at the same time, the puncture position of the vascular operation is reduced, the pain of the patient is relieved, and the incidence rate of postoperative complications can be reduced.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The bidirectional blood vessel guiding sheath comprises a sheath tube component and a sheath core component, wherein the sheath tube component comprises a sheath tube and a sheath tube accessory, the sheath tube is provided with a through sheath tube inner cavity, the rear part of the sheath tube is connected with the sheath tube accessory, and the sheath core component is inserted into the sheath tube inner cavity from the sheath tube accessory and moves axially along the sheath tube inner cavity; and the sheath pipe accessory is provided with a control valve for controlling the action of the elastic metal wire, and the elastic metal wire is connected with the control valve.

2. The bidirectional vascular guiding sheath of claim 1, wherein the semicircular sheath segments have a length of 2.5 mm.