CN213047194U

CN213047194U - Artery puncture trocar

Info

Publication number: CN213047194U
Application number: CN202021063891.2U
Authority: CN
Inventors: 刘德昭; 李响; 陈剑泳; 陈素芳; 梁雁秋; 陈潮金; 邓欢
Original assignee: Third Affiliated Hospital Sun Yat Sen University
Current assignee: Third Affiliated Hospital Sun Yat Sen University
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-04-27
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses an artery puncture trocar, which comprises an outer needle, wherein the needle point is arranged at one end of the outer needle matched with a human body, and a soft sleeve is sleeved outside the outer needle; the needle comprises a needle body, and is characterized by also comprising an inner needle, wherein one end of the inner needle, which is matched with a human body, is a blunt end, and a first channel which is communicated along the length direction is arranged in the inner needle; and a second channel which is through along the length direction is arranged in the outer needle, and the outer needle is sleeved on the inner needle through the second channel. The utility model discloses can improve the success rate that soft sleeve pipe was put in the arteriopuncture.

Description

Artery puncture trocar

Technical Field

The utility model relates to the field of medical equipment, especially, relate to an arteriopuncture trocar.

Background

In perioperative monitoring, invasive arterial blood pressure monitoring is often performed by arterial puncture. The existing artery puncture trocar mainly comprises an outer sleeve and a puncture needle, when in use, the puncture needle is firstly used for puncturing an artery, then the puncture needle is withdrawn, and the outer sleeve (soft sleeve) is directly sent into the artery for indwelling. However, due to the fact that the outer sleeve is shielded by skin, after the outer sleeve enters the body of a patient, the outer sleeve can be smoothly sent into the artery and can only be judged according to self experience of medical workers, the technical requirement is high, and the outer sleeve is soft and is easy to break when being put into the artery, so that the risk that the vascular wall is damaged due to unsmooth or improper force application of the outer sleeve is caused, and complications such as internal bleeding and thrombus are caused.

How to solve the above problems is a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an arteriopuncture trocar that can improve the success rate that soft sleeve pipe was put in the arteriopuncture.

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

the utility model provides an artery puncture trocar, which comprises an outer needle, wherein the needle point is arranged at one end of the outer needle matched with a human body, and a soft sleeve is sleeved outside the outer needle; the needle comprises a needle body, and is characterized by also comprising an inner needle, wherein one end of the inner needle, which is matched with a human body, is a blunt end, and a first channel which is communicated along the length direction is arranged in the inner needle; and a second channel which is through along the length direction is arranged in the outer needle, and the outer needle is sleeved on the inner needle through the second channel.

Furthermore, a locking device which can lock and close the end of the soft sleeve far away from the human body after the soft sleeve is sent into the artery is arranged at the end of the soft sleeve far away from the human body.

Furthermore, the locking device comprises a snap fastener and a base, wherein the snap fastener can apply pressure to one end, far away from the human body, of the soft sleeve so as to lock and close one end, far away from the human body, of the soft sleeve, the base is fixedly connected with one end, far away from the human body, of the soft sleeve, the snap fastener is connected with the base in a sliding mode, and one end, far away from the human body, of the soft sleeve is transversely arranged between the snap.

Furthermore, the snap fastener is of an integrally formed structure, the middle of the bottom surface of the snap fastener is provided with a semicircular bulge which can apply pressure to one end, far away from a human body, of the soft sleeve so as to lock and close the section, far away from the human body, of one end of the soft sleeve, the semicircular bulge is provided with a diameter equal to the pipe diameter of the soft sleeve, male buckles are arranged on two sides of the bottom surface of the snap fastener, and a sliding groove with a depth larger than the pipe diameter of the soft sleeve is.

Further, the base is of an integrally formed structure, a semicircular groove with the cross section equal to the diameter of the soft sleeve is arranged in the middle of the top surface of the base, female buckles capable of being in buckle fit with the male buckles are arranged on two sides of the top surface of the base, a guide plate with the height larger than the diameter of the soft sleeve is arranged between the groove and the female buckles, a limiting rod with the diameter larger than the thickness of the guide plate is arranged at the top end of the guide plate, the groove is matched with the protrusion, the inner side face of the groove is fixedly connected with the outer wall of the soft sleeve, the guide plate and the limiting rod slide along the sliding groove, and the sum of the height of the guide plate and the diameter of the limiting rod is smaller.

Due to the adoption of the structure, the utility model discloses the beneficial effect who has as follows:

the utility model discloses an inside cover is equipped with the outer needle puncture artery of interior needle, then withdraws from outer needle, in sending into the artery through the soft sleeve pipe of interior needle guide, makes the soft sleeve pipe put the pipe and can accomplish smoothly, plays the supporting role to the soft sleeve pipe in the guide in-process simultaneously, avoids the soft sleeve pipe to appear the condition such as folding putting into the in-process to the success rate of soft sleeve pipe putting has been improved. And, be equipped with the first passageway that link up along length direction in the interior needle, after interior needle and human cooperation one end got into the artery, blood can be followed first passageway outflow external, makes things convenient for medical personnel to judge whether interior needle and human cooperation one end send into the artery through blood in to better guide soft sleeve pipe sends into the artery. In addition, the end of the inner needle matched with the human body is a blunt end, so that the risk that the inner needle punctures the vascular wall can be reduced.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a partial cross-sectional view of the present invention;

fig. 2 is an external structural view of the locking device of the present invention;

fig. 3 is a cross-sectional view of the locking device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the artery puncture trocar provided by the present invention comprises an outer needle 1, wherein one end of the outer needle 1, which is engaged with a human body, is a needle point, and a soft cannula 2 is sleeved outside the outer needle 1; the needle also comprises an inner needle 3, one end of the inner needle 3, which is matched with a human body, is a blunt end, and a first channel 4 which is communicated along the length direction is arranged in the inner needle 3; a second channel 5 which is through along the length direction is arranged in the outer needle 1, and the outer needle 1 is sleeved on the inner needle 3 through the second channel 5. When the end of the inner needle 3 matched with the human body enters the artery, blood can flow out of the body along the first channel 4, so that medical personnel can conveniently judge whether the end of the inner needle 3 matched with the human body is positioned in the artery; the end of the inner needle 3 matched with the human body is a blunt end, so that the inner needle 3 can be prevented from puncturing the artery.

The utility model discloses in soft sleeve pipe 2 is kept away from human one end and is installed one and can lock the locking device 6 that seals above-mentioned soft sleeve pipe 2 and keep away from human one end after soft sleeve pipe 2 sends into the artery to prevent that soft sleeve pipe 2 from putting into the artery back blood and following soft sleeve pipe 2 and toward flowing outward.

The utility model discloses in, thereby locking device 6 seals snap-fastener 61 that human one end was kept away from to above-mentioned soft sleeve pipe 2, keeps away from human one end fixed connection's base 62 with soft sleeve pipe 2 including can keeping away from human one end to soft sleeve pipe 2 and exerting pressure, snap-fastener 61 and base 62 sliding connection and soft sleeve pipe 2 keeps away from human one end and transversely arranges between snap-fastener 61 and base 62. When downward pressure is applied to the snap fastener 61, the snap fastener 61 slides towards the base 62, and simultaneously, the snap fastener 61 applies pressure to one end, far away from the human body, of the soft sleeve 2 transversely arranged between the snap fastener 61 and the base 62 to force the soft sleeve 2 to deform, so that the upper inner wall and the lower inner wall of the soft sleeve 2 are tightly attached, and the purpose of locking and closing one end, far away from the human body, of the soft sleeve 2 is achieved.

The utility model discloses in, snap-fastener 61 is the integrated into one piece structure be equipped with in the middle of the snap-fastener 61 bottom surface and can keep away from soft sleeve pipe 2 that human one end is exerted pressure thereby locking seals above-mentioned soft sleeve pipe 2 and keep away from semicircular arch 611 of human one end for the diameter equals soft sleeve pipe 2 pipe diameter snap-fastener 61 bottom surface both sides are equipped with pin thread 612 the inside spout 613 that is equipped with the degree of depth and is greater than the pipe diameter of soft sleeve pipe 2 of snap-fastener 61, consequently, relative gliding distance between snap-fastener 61 and the base 62 is greater than the pipe diameter of soft sleeve pipe 2 to avoid in-process locking device 6 of needle 3 guide soft sleeve pipe 2 can not pin interior needle 3 in the process, snap-fastener 61 can slide to the position that forces the inseparable laminating of soft sleeve pipe 2 upper and lower inner wall after.

The utility model discloses in, base 62 is the integrated into one piece structure be equipped with the cross-section in the middle of the base 62 top surface and equal to the semicircular recess 621 of soft sleeve pipe 2 pipe diameter for the diameter base 62 top surface both sides be equipped with can with pin 612 buckle complex box 622 be equipped with the deflector 623 that highly is greater than soft sleeve pipe 2 pipe diameter between recess 621 and the box 622 deflector 623 top is equipped with the gag lever post 624 that the diameter is greater than deflector 623 thickness, wherein, recess 621 cooperatees with protruding 611 and this recess 621 medial surface and soft sleeve pipe 2 outer wall fixed connection, deflector 623 and gag lever post 624 all slide along spout 613 and the height of deflector 623 and the diameter sum of gag lever post 624 are less than the degree of depth of spout 613.

In the using process of the utility model, firstly, the outer needle 1 is punctured into the artery, after the outer needle 1 punctures the middle artery, the outer needle 1 is pulled out, the inner needle 3 is sent into the artery, and after the inner needle 3 is matched with one end of the human body and enters the artery, the blood flows out of the body along the first channel 4, thereby facilitating the medical personnel to judge whether the matched end of the inner needle 3 and the human body enters the artery through the blood, subsequently, the inner needle 3 is pushed to move forwards along the artery, the inner needle 3 is extended to the artery for a proper distance so as to avoid the matched end of the inner needle 3 and the human body from separating from the inside of the artery, then, after the soft sleeve 2 is guided to be placed into the artery through the inner needle 3, the inner needle 3 is pulled out, the snap fastener 61 is pressed, the guide plate 623 and the limiting rod 624 slide upwards along the sliding chute 613, the snap fastener 61 slides downwards until the bulge 621 is matched with the groove, at the moment, the upper inner wall, thereby form protruding 611, soft sleeve pipe 2, the laminated structure in proper order of recess 621, reach the effect of blockking up soft sleeve pipe 2, consequently can prevent the blood outflow, simultaneously, box 622 and pin 612 snap-fit make snap-fastener 61 and base 62 snap-fit connection to make the upper and lower inner wall of soft sleeve pipe 2 keep the laminating state for a long time.

The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.

Claims

1. An artery puncture trocar comprises an outer needle (1), wherein one end of the outer needle (1) matched with a human body is a needle point, and a soft cannula (2) is sleeved outside the outer needle (1); the method is characterized in that: the needle also comprises an inner needle (3), one end of the inner needle (3) matched with a human body is a blunt end, and a first channel (4) which is through along the length direction is arranged in the inner needle (3); a second channel (5) which is through along the length direction is arranged in the outer needle (1), and the outer needle (1) is sleeved on the inner needle (3) through the second channel (5).

2. An arterial puncture trocar according to claim 1, wherein: one end of the soft sleeve (2) far away from the human body is provided with a locking device (6) which can lock and close one end of the soft sleeve (2) far away from the human body after the soft sleeve (2) is sent into the artery.

3. An arterial puncture trocar according to claim 2, wherein: the locking device (6) comprises a snap fastener (61) which can apply pressure to one end of the soft sleeve (2) far away from the human body so as to lock and close one end of the soft sleeve (2) far away from the human body, and a base (62) fixedly connected with one end of the soft sleeve (2) far away from the human body, wherein the snap fastener (61) is connected with the base (62) in a sliding mode, and one end of the soft sleeve (2) far away from the human body is transversely arranged between the snap fastener (61) and the base (62).

4. An arterial puncture trocar according to claim 3, wherein: the snap fastener (61) is of an integrally formed structure, a semicircular bulge (611) which can apply pressure to one end, far away from a human body, of the soft sleeve (2) so as to lock and close the cross section of one end, far away from the human body, of the soft sleeve (2) is arranged in the middle of the bottom surface of the snap fastener (61), male buckles (612) are arranged on two sides of the bottom surface of the snap fastener (61), and a sliding groove (613) with the depth larger than the pipe diameter of the soft sleeve (2) is arranged in the snap fastener (61).

5. An arterial puncture trocar according to claim 4, wherein: the base (62) is of an integrated structure, a semicircular groove (621) with the section being equal to the pipe diameter of the soft sleeve (2) is arranged in the middle of the top surface of the base (62), a female buckle (622) which can be matched with the male buckle (612) in a buckling way is arranged on the two sides of the top surface of the base (62), a guide plate (623) with the height larger than the pipe diameter of the soft sleeve (2) is arranged between the groove (621) and the female buckle (622), the top end of the guide plate (623) is provided with a limiting rod (624) with the diameter larger than the thickness of the guide plate (623), wherein the groove (621) is matched with the bulge (611) and the inner side surface of the groove (621) is fixedly connected with the outer wall of the soft sleeve (2), the guide plate (623) and the limiting rod (624) slide along the sliding groove (613), and the sum of the height of the guide plate (623) and the diameter of the limiting rod (624) is smaller than the depth of the sliding groove (613).