CN112401988A - Distal radial puncture device and use method thereof - Google Patents

Abstract

The invention discloses a far radial puncture device, which comprises a puncture piece and a needle, wherein the puncture piece is provided with a hollow puncture part and a guide part; a guide wire which can enter the puncture part from the guide part; the sheath tube is provided with a tube seat and a tube body, one end of the tube body is communicated with the tube seat, and the tube seat is provided with an opening matched with the guide wire; the dilator can penetrate through the tube body through the opening, and one end of the dilator extends out of the tube body. According to the arrangement, the puncture part is used for establishing the puncture channel, the guide wire enters the puncture channel from the guide part, the requirement on the tissues around the puncture channel is not high, the radial artery is not easy to cause spasm, after the puncture part exits along the guide wire, the dilator carries the sheath catheter to enter the puncture channel along the guide wire, finally, the guide wire and the dilator exit, a channel is formed in the sheath catheter, and other operation operations can be carried out.

Description

Distal radial puncture device and use method thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a distal radial puncture device and a using method thereof.

Background

With the continuous popularization and application of cardiac intervention, the radial artery technique is the first choice for the current cardiovascular intervention. Compared with the classical radial artery puncture interventional therapy, the remote radial artery puncture interventional therapy for coronary heart disease has fewer complications, higher safety and more convenient operation, and simultaneously, the remote radial artery puncture reduces the forced pressurization of a puncture access and shorter puncture compression time, thereby avoiding the occurrence of complications such as vagus nerve reflex, vascular occlusion and the like. The coronary angiography and the endoluminal angioplasty which are performed through the access of the distal radial artery have the advantages of simplicity, convenience, minimal invasion, safety, rapidness, effectiveness, strong operation repeatability, convenience for postoperative clinical care, quick recovery of patients and few complications.

The existing radial artery puncture is not well suitable for distal radial artery puncture, for example, a trocar is generally adopted as a puncture member, the trocar needs to penetrate through a blood vessel and then retreat, and the puncture on the distal radial artery easily causes radial artery spasm, so that some complications are generated.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a distal radial puncture device which can be suitable for puncturing a distal radial artery.

The invention also provides a using method of the distal radial puncture device.

A distal radial puncture device according to an embodiment of the present invention comprises: a puncture piece having a hollow puncture part and a guide part, the puncture part penetrating through the guide part;

a guide wire which can enter the puncture part from the guide part;

the sheath tube is provided with a tube seat and a tube body, one end of the tube body is communicated with the tube seat, and the tube seat is provided with an opening matched with the guide wire;

the dilator can penetrate through the tube body through the opening, and one end of the dilator extends out of the tube body.

The distal radial puncture device provided by the embodiment of the invention has at least the following beneficial effects: the puncture path is established by the puncture part by the aid of the independent puncture piece, the guide wire can be used to enter the puncture path from the guide part after blood returning, the requirement on tissues around the puncture path is not high, the radial artery is not prone to generating spasm, after the puncture piece exits along the guide wire, the tube body of the sheath tube enters the puncture path along the guide wire, the guide wire is finally exited, a path is formed in the sheath tube, and the dilator can be arranged in the sheath tube in a penetrating mode to perform other operation.

According to some embodiments of the invention, the puncture part is provided with a sharp edge, and an inner wall of the guide part is provided with a guide surface for guiding the guide wire.

According to some embodiments of the invention, one end of the guide wire is provided with an elbow, the angle of the elbow is set to 40 ° to 50 °, and the bending radius of the elbow is 4-6 mm.

According to some embodiments of the invention, the outer wall of the guidewire is a stainless steel wound or polymer coating and the inner core of the guidewire is a nitinol material.

According to some embodiments of the invention, the outer wall of the tube body is provided with a hydrophilic coating, and the distal end of the tube body is provided with a guide slope.

According to some embodiments of the invention, further comprising a hemostat, the hemostat comprising a wearing assembly and a hemostasis assembly, the hemostasis assembly disposed above the wearing assembly.

According to some embodiments of the invention, the wearing assembly comprises a first fixing band, a second fixing band and a third fixing band, the first fixing band is attached to the second fixing band through a magic tape to form a wrist fixing cavity, and the second fixing band is attached to the third fixing band through the magic tape to form a thumb cavity and a palm cavity.

According to some embodiments of the invention, the hemostatic assembly comprises a fixing base, a pressing plate and a knob, the pressing plate is movably connected below the fixing base, the knob is movably connected above the fixing base, and the knob is used for driving the pressing plate to move upwards or downwards.

A method of use utilizing a distal radial puncture device as described above, comprising the steps of

Puncturing: the puncture device 100 is used to pierce a target body from a puncture opening to form a puncture channel;

threading a guide wire: one end of the guide wire 200 is inserted into the puncture part 120 through the guide part 110, and the puncture piece 100 exits from the puncture passage along the guide wire 200, so that the guide wire 200 is left in the puncture passage independently;

sheathing canal puncture: the dilator 400 with the sheath tube 300 is inserted through the end of the guide wire 200 which is left outside the puncture point, and then enters the puncture path along the guide wire 200, and after entering the puncture path, the guide wire 200 and the dilator 400 are taken out from the puncture path.

According to some embodiments of the invention, in the piercing step, the angle at which the piercing element enters the piercing passage is 40 ° to 50 °.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a cross-sectional view of a piercing member according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a piercing member according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a guidewire according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a sheath according to an embodiment of the present invention;

FIG. 5 is a schematic view of a sheath engaged with a dilator in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural view of a hemostat according to an embodiment of the present invention;

fig. 7 is an exploded view of a hemostat according to an embodiment of the present invention.

Piercing member 100, guide 110, guide surface 111, piercing member 120, sharp edge 121, indicator arrow 130;

guide wire 200, elbow 210;

sheath 300, tube 310, tube holder 320, opening 330;

a dilator 400;

the hemostat 500 comprises a wearing assembly 510, a first fixing band 511, a second fixing band 512, a third fixing band 513, a hemostasis assembly 520, a pressing plate 521, a fixing seat 522 and a knob 523.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 4, a distal radial puncture device according to an embodiment of the present invention includes a puncture element 100 including a puncture part 120 and a guide part 110, the puncture part 120 is a bare steel needle, the puncture part 120 is hollow, the guide part 110 is a needle seat connected to the bare steel needle, the guide part 110 is also hollow and is communicated with the puncture part 120, and an indication arrow 130 for indicating a puncture direction is further disposed on an outer wall of the guide part 110; a guide wire 200 which can be inserted into the puncture section 120 from the guide section 110; the sheath 300 comprises a tube body 310 and a tube seat 320, wherein one end of the tube body 310 is communicated with the tube seat 320, the other end face of the tube seat 320 is provided with an opening 330, the size of the opening 330 is matched with that of the guide wire 200, and the tube body 310 can move along the guide wire 200.

By adopting the structure, the puncture part 120 is used to establish the puncture path for the single puncture element 100, the guide wire 200 can be used to enter the puncture path from the guide part 110 after blood returning, the requirement on the tissues around the puncture path is not high, the spasm of the radial artery is not easy to generate, after the puncture element 100 is withdrawn along the guide wire 200, the tube body 310 of the sheath tube enters the puncture path along the guide wire, and finally the guide wire 200 is withdrawn, so that a path is formed in the sheath tube, and other operation operations can be carried out.

According to some embodiments of the present invention, referring to fig. 1, a sharp edge 121 is disposed at one end of the puncturing part 120, the sharp edge 121 is used for better entering into a puncturing object to form a puncturing path, a guiding surface 111 is disposed inside the guiding part 110, when the guide wire 200 is used to enter into the puncturing part 100, the front end of the guide wire 200 can smoothly enter into the puncturing part 120 from the guiding part 110 under the action of the guiding surface 111, and the guiding surface 111 plays a guiding role for the guide wire 200.

According to some embodiments of the present invention, referring to fig. 3, a bend 210 is provided at one end of the guide wire 200, the bend 210 being angled at 40 ° to 50 °. It should be noted here that the elbow 210 refers to a bending part formed by a long side and a short side of the guide wire 200 in the drawing, the angle of the elbow 210 refers to an included angle formed by the long side and the short side of the guide wire 200, the bending radius of the elbow is 4-6mm, wherein 5mm is the best, and the guide wire 200 is made of metal, so that the guide wire 200 can be prevented from being scratched by a sharp tangent plane of a steel needle when the guide wire 200 is withdrawn.

In the above embodiment, the outer wall of the guidewire 200 is made of stainless steel or polymer coating, and the inner core is made of shape memory alloy, shape memory alloy or nickel-titanium alloy. Wherein the polymer coating is a polymer layer sleeved on the outer wall of the guide wire 200, the polymer material is polyurethane, polyamide or fluorinated ethylene propylene copolymer, and the outer side of the polymer coating is also coated with a hydrophilic coating, so that the guide wire can enter the puncture passage more smoothly.

According to some embodiments of the present invention, a hydrophilic coating layer is provided on an outer wall of the tube body 310 of the sheath tube 300, and the hydrophilic coating layer may be formed of polyurethane-based resin, polystyrene-based resin, polyester-based resin, polyamide-based resin, acrylate-based resin, polyethylene-based resin, fluorine-based resin, carbodiimide, or cellulose-based copolymer. The hydrophilic coating is arranged, so that the sheath 300 can enter the puncture path more smoothly, and meanwhile, the resistance is small when the sheath is pulled out, the intima of the blood vessel is not easy to be damaged, and the occurrence of complications such as spasm and the like is reduced. The length of the sheath 300 is 15cm-20cm, the sheath 300 can better protect the radial artery under the length, and the wall thickness of the sheath 300 is set between 0.1mm-0.2mm, so that the outer diameter of the sheath 300 can be smaller under the same inner diameter, and the injury of puncture to the blood vessel is reduced. The distal end of the tube 310 is provided with a guiding bevel to make the tube 310 more smooth when entering the puncture path. It should be noted that the distal end of the tube body 310 refers to the end of the tube body 310 away from the tube holder 320, and after the dilator 400 is inserted into the sheath tube 300, the guiding slope of the distal end of the tube body 310 is tightly attached to the outer wall of the dilator 400.

According to some embodiments of the present invention, referring to fig. 5, a dilator 400 is further included, the dilator 400 is hollow, the dilator 400 can be inserted into the tube 310 through the opening 330 of the sheath 300, and one end of the dilator 400 extends out of the tube 310. In the puncture process, firstly, the dilator 400 is inserted into the tube body 310 through the opening 330, as shown in fig. 5, then the guide wire 200 is inserted into the dilator 400, so that the dilator 400 and the sheath 300 enter the puncture path along the guide wire 200, the front end of the dilator 400 is provided with a guide inclined plane, so that the dilator 400 enters the puncture path more smoothly, when entering the puncture path, the dilator 400 plays a supporting role for the sheath 300, the sheath 300 is prevented from being crushed in the puncture process, after entering the puncture path, the guide wire 200 and the dilator 400 are taken out from the puncture path, and the sheath 300 is left in the puncture path.

According to some embodiments of the present invention, referring to fig. 6 and 7, a hemostat 500 is further included, the hemostat 500 including a wearing assembly 510 and a hemostasis assembly 520, the hemostasis assembly 520 being disposed above the wearing assembly 510. The wearing assembly 510 comprises a first fixing strap 511, a second fixing strap 512 and a third fixing strap 513, the first fixing strap 511 is attached to the second fixing strap 512 through a magic tape, so as to form a wrist cavity, so that the hemostat 500 can be fixed on the wrist, and the second fixing strap 512 is attached to the third fixing strap 513 through a magic tape, so as to form a thumb cavity and a palm cavity for placing the thumb; the hemostasis assembly 520 comprises a pressing plate 521, a fixing seat 522 and a knob 523, wherein the pressing plate 521 is movably connected below the fixing seat 522, the pressing plate 521 is used for abutting against the puncture passage to stop bleeding, the knob 523 is movably connected above the fixing seat 522, and the knob 523 can drive the pressing plate 521 to be away from the puncture passage upwards or to be close to and abut against the puncture passage downwards.

According to some embodiments of the invention, the hemostatic assembly comprises a fixing base, a pressing plate and a knob, the pressing plate is movably connected below the fixing base, the knob is movably connected above the fixing base, and the knob is used for driving the pressing plate to move upwards or downwards.

Referring to fig. 1 to 5, a puncturing method using the distal radial puncturing device described above includes the steps of:

preparing: the blade is used for forming a puncture on a target body;

puncturing: the puncture device 100 is used to pierce a target body from a puncture opening to form a puncture channel;

threading a guide wire: one end of the guide wire 200 is inserted into the puncture part 120 through the guide part 110, and the puncture piece 100 exits from the puncture passage along the guide wire 200, so that the guide wire 200 is left in the puncture passage independently;

sheathing canal puncture: the dilator 400 with the sheath tube 300 is inserted through the end of the guide wire 200 which is left outside the puncture point, and then enters the puncture path along the guide wire 200, and after entering the puncture path, the guide wire 200 and the dilator 400 are taken out from the puncture path.

In the above step, the angle at which the lancet 100 enters the puncture path is 40 ° to 50 °.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A distal radial puncture device, comprising:

a puncture piece having a hollow puncture part and a guide part, the puncture part penetrating through the guide part;

a guide wire which can enter the puncture part from the guide part;

the sheath tube is provided with a tube seat and a tube body, one end of the tube body is communicated with the tube seat, and the tube seat is provided with an opening matched with the guide wire;

the dilator can penetrate through the tube body through the opening, and one end of the dilator extends out of the tube body.

2. The distal radial puncture device of claim 1, wherein the puncture portion is provided with a sharp edge, and an inner wall of the guide portion is provided with a guide surface for guiding the guide wire.

3. The distal radial puncture device of claim 1, wherein an end of the guide wire is provided with an elbow, the elbow is disposed at an angle of 40 ° to 50 °, and the elbow has a bend radius of 4-6 mm.

4. The distal radial puncture device of claim 3, wherein the outer wall of the guidewire is a stainless steel wound or polymer coating and the inner core of the guidewire is a nickel titanium shape memory alloy.

5. The distal radial puncture device of claim 1, wherein the outer wall of the tubular body is provided with a hydrophilic coating, and the distal end of the tubular body is provided with a guide bevel.

6. The distal radial puncture device of any one of claims 1 through 5, further comprising a hemostat, the hemostat comprising a wear assembly and a hemostasis assembly, the hemostasis assembly disposed above the wear assembly.

7. The distal radial puncture device according to claim 6, wherein the wearing assembly comprises a first fixing strap, a second fixing strap and a third fixing strap, the first fixing strap is attached to the second fixing strap through a hook and loop fastener to form a wrist fixing cavity, and the second fixing strap is attached to the third fixing strap through the hook and loop fastener to form a thumb cavity and a palm cavity.

8. The distal radial puncture device of claim 6, wherein the hemostatic assembly comprises a holder, a pressure plate and a knob, the pressure plate is movably connected below the holder, the knob is movably connected above the holder, and the knob is used for driving the pressure plate to move up or down.

9. A method of using a distal radial puncture device, using a distal radial puncture device according to any of claims 1 through 8, comprising the steps of:

puncturing: the puncture device 100 is used to pierce a target body from a puncture opening to form a puncture channel;

threading a guide wire: one end of the guide wire 200 is inserted into the puncture part 120 through the guide part 110, and the puncture piece 100 exits from the puncture passage along the guide wire 200, so that the guide wire 200 is left in the puncture passage independently;

sheathing canal puncture: the dilator 400 with the sheath tube 300 is inserted through the end of the guide wire 200 which is left outside the puncture point, and then enters the puncture path along the guide wire 200, and after entering the puncture path, the guide wire 200 and the dilator 400 are taken out from the puncture path.

10. The method of using a distal radial puncture device according to claim 9, wherein the angle of entry of the piercing element into the puncture path during the puncturing step is between 40 ° and 50 °.

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