CN209751900U

CN209751900U - Guide wire and guide wire assembly

Info

Publication number: CN209751900U
Application number: CN201920093111.XU
Authority: CN
Inventors: 王晓凑; 李军
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2019-12-10
Anticipated expiration: 2029-01-11

Abstract

The utility model relates to a seal wire and seal wire subassembly. The technical scheme is as follows: the novel guide wire comprises a guide wire body, wherein the guide wire body comprises a spring tube and a supporting inner core arranged in the spring tube, two ends of the supporting inner core are fixedly connected with the spring tube, the supporting inner core is in a hollow tubular shape with a central hole cavity, and the tail end of the guide wire body is matched with a connector for connecting an injector. The operator can withdraw the guide wire remaining in the patient through the connector and the syringe. If blood is drawn back, the guidewire can be determined to be in the deep vein. If blood is not pumped back, the guide wire can be judged not to be in the deep vein, and the accurate judgment of the accurate vein insertion condition of the guide wire is realized, so that the blind insertion of the dilator and the catheter is avoided, and the purpose of reducing injury is achieved.

Description

Guide wire and guide wire assembly

Technical Field

The utility model relates to a medical appliance, in particular to a guide wire and a guide wire component used in deep vein puncture catheterization.

Background

Deep venipuncture catheterization is a necessary technique for establishing a venous channel for critically ill patients. The purpose is as follows: the comprehensive conditions of effective blood volume, cardiac function and peripheral circulation resistance are known.

② identifying the acute circulatory failure of unknown reasons.

And thirdly, when a large amount of blood transfusion and fluid infusion are needed, the dynamic change of the blood volume is observed, and the danger of cyclic overload is avoided.

Fourthly, the blood transfusion and fluid infusion device is used as a way for massive blood transfusion and fluid infusion for critically ill patients, major operations and emergency situations.

Take an internal jugular vein puncture catheter as an example. When in operation, the patient lies down, goes to the pillow and leans on the head, turns the head to the opposite side, if necessary, the back of the shoulder is raised, and the head is at a low position of 15-30 degrees. Sterilizing conventionally, spreading sterile hole towel, and locally anesthetizing the puncture point. First, a common needle is used for trying. After the position is determined, puncture is carried out, the index finger of the left hand is used for fixing the point, the puncture needle is held by the right hand, the puncture needle is withdrawn while the needle is inserted, after venous blood is seen, the needle head is fixed, the non-destructive guide steel wire with the length mark is inserted, and the puncture needle is pulled out together with the injector. The dilator expands the skin, and is placed into the catheter through the guide steel wire, and the remaining length is about 10-15 cm. Withdrawing the guide steel wire, withdrawing the catheter to show blood, flushing with heparin normal saline, connecting with a heparin cap, and fixing with sterile dressing.

The guide wire may not be placed in the deep vein but in the surrounding tissue during the process of inserting the atraumatic guide wire with the length mark, and the operator cannot easily perceive the guide wire. When the operator performs 'dilation of skin by the dilator and places the catheter by the guide steel wire', the operator can find that 'placing the catheter by the guide steel wire' is difficult, or find that the catheter is not successfully placed in the deep vein by finding that blood is not contained in the withdrawal catheter after 'placing the catheter by the guide steel wire' is barely performed. Then the catheter is pulled out and the catheter is punctured again. This can cause unnecessary trauma to the patient.

Disclosure of Invention

The utility model discloses the invention purpose: for overcoming the defects existing in the prior art, the utility model provides a guide wire which can judge the situation of the deep vein.

In order to achieve the above purpose, the utility model provides a following technical scheme:

The utility model provides a seal wire, includes the seal wire body, the seal wire body includes the spring pipe and arranges the intraductal support inner core of spring in, support inner core both ends and spring pipe fixed connection, its characterized in that: the supporting inner core is in a hollow tubular shape with a central pore cavity.

Through adopting above-mentioned technical scheme, the support inner core of seal wire adopts hollow tubular design, realizes that the seal wire has central vestibule, and the operator can pass through the connector with the seal wire of staying in patient's body and connect the syringe and withdraw. If blood is drawn back, the guidewire can be determined to be in the deep vein. If blood is not pumped back, the guide wire can be judged not to be in the deep vein, so that the dilator and the catheter are prevented from being placed, and the purpose of reducing injury is achieved.

Preferably, the front end of the guide wire body is in a hook shape. Under this structural design for the seal wire is difficult for haring the blood vessel at puncture in-process.

The utility model also provides a can judge the seal wire subassembly of putting into the dark vein condition, including the seal wire body, the seal wire body includes the spring tube and arranges the intraductal support inner core of spring in, support inner core both ends and spring tube fixed connection, its characterized in that: the support inner core is a hollow tube with a central pore cavity, and the tail end of the guide wire body is matched with a connector for connecting an injector. Under this structural design, the support inner core of seal wire adopts hollow tubular design, realizes that the seal wire has central vestibule, and the operator can pass through the connector with the seal wire of staying in patient's body and connect the syringe and withdraw. If blood is drawn back, the guidewire can be determined to be in the deep vein. If blood is not pumped back, the guide wire can be judged not to be in the deep vein, so that the dilator and the catheter are prevented from being placed, and the purpose of reducing injury is achieved.

The present invention will be further described with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a guide wire assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of a connector according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a connector according to an embodiment of the present invention.

Detailed Description

Referring to fig. 1, the utility model discloses a guide wire, including guide wire body 1, guide wire body 1 includes spring tube 11 and arranges support inner core 12 in spring tube 11 in, support inner core 12 both ends and spring tube 11 fixed connection, support inner core 12 be the hollow tubulose of taking central vestibule 121. The support inner core and the spring tube can be fixed by adopting the traditional welding connection, and the welding position is ensured to be smooth and not to block the port of the central hole cavity.

The front end of the guide wire body 1 is in a hook shape, such as a U-shaped hook front part 1-1 in the figure.

As shown in fig. 1 to 3, the tail end of the guide wire body 1 is matched with a connector 2 for connecting an injector. The connector 2 can be detachably matched with the tail part of the guide wire body 1. The operation of the guide wire can avoid the influence of the connector, and the guide wire can also adopt the design of the connector which is fixedly connected into a whole.

in this embodiment, the connector 2 includes a fixed tube 21, a locking rubber column 22 and a locking cap 23, the fixed tube 21 is provided with an installation cavity 210, one end of the installation cavity 210 of the fixed tube 21 is provided with a bottom 211, the bottom 211 is provided with a guide wire insertion hole 212 for the guide wire body 1 to penetrate, the outer side wall of the other end of the fixed tube 21 is provided with a connection external thread 213, the locking rubber column 22 is arranged in the installation cavity 210 of the fixed tube 21, the locking rubber column 22 is provided with a locking hole 221 which is correspondingly matched with the guide wire insertion hole 212 on the bottom 211 and is used for the guide wire body 1 to penetrate, the locking cap 23 includes a screwing nut 231, the screwing nut 231 is screwed with the connection external thread 213, a central column 232 is coaxially arranged in the screwing nut 231, the center column 232 is provided with a guide wire positioning hole 233 for the guide wire body 1 to insert in, a connector 234 coaxially extends out of the screwing nut 231, the inner cavity of the connector 234 is, the tail end of the guide wire positioning hole 233 is provided with a step surface 2331 for limiting the end of the guide wire body 1, the central column 232 is screwed on the connecting external thread 213 along with the screwing nut body 231 and inserted into the mounting cavity 210 of the fixed pipe 21, and the central column 232 is screwed on the connecting external thread 213 along with the screwing nut body 231 to extrude the locking rubber column 22 on the bottom 211 to deform so as to form the locking rubber column 22 to clamp the locking guide wire body 1. During operation, pass the seal wire body in proper order and put into the hole, the locking hole of locking rubber column, the seal wire locating hole of center post, then connect the spiral shell cap body to screw on the connection external screw thread of fixed pipe soon, the center post will lock the rubber column top and press the installation cavity bottom of fixed pipe and make locking rubber column elastic deformation along with connecting the spiral shell cap body soon, the locking hole is by centre gripping locking seal wire body behind the extrusion deformation, thereby make connector and seal wire body fixed connection, moreover, the steam generator is simple in structure, the connector is connected with the seal wire body and the assembly is simple and convenient.

The bottom 211 is a cone protruding towards the inside of the installation cavity 210, the guide wire insertion hole 212 is located at the top end of the cone, a cone-shaped cavity 211-1 is formed on the outer side of the corresponding bottom 211, and a cone-shaped protruding surface 211-2 is formed on the inner side of the bottom 211. The conical cavity is convenient for the guide wire body to insert into the guide wire placing hole, and the conical convex surface is convenient for locking the deformation of the rubber column.

Further, an arc-shaped annular protrusion 235 is arranged on the outer circumferential surface of the starting end position of the central column 232 inserted into the installation cavity 210, an annular anti-falling convex edge 215 is arranged in a port of the installation cavity 210 opposite to the bottom 211, the cross section of the anti-falling convex edge 215 is arc-shaped, the annular protrusion 235 is matched with the anti-falling convex edge 215 in a stopping manner, a yielding opening 2311 which is formed by hollowly sleeving the connecting external thread 213 of the fixed pipe 21 to form the internal thread of the screwing nut body 231 and the connecting external thread 213 to be separated is arranged at the opening of the screwing nut body 231, and the annular protrusion 235 is located at a stopping position matched with the anti-falling convex edge 215 in a stopping manner when the yielding opening 2311 is hollowly sleeved on the connecting external thread. After the internal thread of the screw cap body is connected with the external thread, the abdication port of the screw cap body is matched with the fixed pipe, under the matching of the annular bulge and the anti-drop convex edge, the screw cap body is connected on the fixed pipe in an idle mode, the locking cap is prevented from being separated from the fixed pipe in a rotating mode, and the connector is more convenient to use.

A holding wing 214 is protruded on the outer wall of the fixing tube 21. The fixing tube is provided with a holding part for holding the fixing tube by hand, so that the operation of the connector is convenient.

Claims

1. The utility model provides a seal wire, includes the seal wire body, the seal wire body includes the spring pipe and arranges the intraductal support inner core of spring in, support inner core both ends and spring pipe fixed connection, its characterized in that: the supporting inner core is in a hollow tubular shape with a central pore cavity.

2. The guidewire of claim 1, wherein: the front end of the guide wire body is in a hook shape.

3. The utility model provides a seal wire assembly, includes the seal wire body, the seal wire body includes the spring pipe and arranges the intraductal support inner core of spring in, support inner core both ends and spring pipe fixed connection, its characterized in that: the support inner core is a hollow tube with a central pore cavity, and the tail end of the guide wire body is matched with a connector for connecting an injector.

4. the guidewire assembly of claim 3, wherein: the connector is releasably engaged to the tail of the guidewire body.

5. The guidewire assembly of claim 4, wherein: the connector comprises a fixed pipe, a locking rubber column and a locking cap, wherein the fixed pipe is provided with an installation cavity, one end of the installation cavity of the fixed pipe is provided with a bottom, the bottom is provided with a guide wire insertion hole for a guide wire body to penetrate through, the outer side wall of the other end of the fixed pipe is provided with a connecting external thread, the locking rubber column is arranged in the installation cavity of the fixed pipe, the locking rubber column is provided with a locking hole which is correspondingly matched with the guide wire insertion hole on the bottom and is used for the guide wire body to penetrate through, the locking cap comprises a screwing nut body, the screwing nut body is in threaded screw fit with the connecting external thread, a central column is coaxially arranged in the screwing nut body, the center of the central column is provided with a guide wire positioning hole for the guide wire body to insert, a connector is coaxially extended outside the screwing nut body, the inner cavity of the connector is coaxially communicated with the guide, the central column is screwed in the connecting external thread along with the screwing screw cap body to extrude the locking rubber column on the bottom to deform so as to form a locking rubber column clamping locking guide wire body.

6. The guidewire assembly of claim 5, wherein: the bottom is a cone protruding towards the mounting cavity, the guide wire placing hole is located at the top end of the cone, the outer side of the bottom correspondingly forms a cone-shaped cavity, and the inner side of the bottom correspondingly forms a cone-shaped protruding surface.

7. The guidewire assembly of claim 5, wherein: the outer periphery that the center post inserted the top position in the installation cavity is equipped with convex annular arch, the installation cavity with be equipped with annular anticreep protruding edge in the relative port in end, the anticreep is protruding along cross sectional shape and is arc, and annular arch and the protruding backstop cooperation of following of anticreep, the oral area that connects the spiral shell body soon has the internal thread that the empty cover constitutes the spiral shell body in the connection external screw thread department of fixed pipe and the position mouth that lets that connects the external screw thread and throw off, annular arch is located and the protruding backstop position along the backstop complex of anticreep when letting the position mouth empty cover on connecting the external screw thread.

8. The guidewire assembly of claim 5, wherein: and a holding wing is convexly arranged on the outer wall of the fixed pipe.