CN210784577U

CN210784577U - Puncture needle for cardiology

Info

Publication number: CN210784577U
Application number: CN201920106704.5U
Authority: CN
Inventors: 郭院林; 王琳玲; 王军令
Original assignee: Affiliated Renhe Hospital of China Three Gorges University
Current assignee: Affiliated Renhe Hospital of China Three Gorges University
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2020-06-19
Anticipated expiration: 2029-01-15

Abstract

The utility model relates to the technical field of medical instruments, in particular to a puncture needle for cardiology, wherein, a trocar is fixedly arranged at the left end of a sleeve, the right end of a needle core passes through the trocar and the sleeve and then extends to be arranged at the right side of the sleeve, and a rotating block is fixedly arranged at the extending end; a plurality of liquid inlet holes are fixedly formed in the side wall of the left end of the trocar, and a plurality of liquid outlet holes are fixedly formed in the side wall of the left side of the needle core in the sleeve; a piston is fixedly sleeved on the needle core in the sleeve; the lower end of the liquid outlet pipe is inserted into the inner bottom of the liquid collecting bottle; the upper end of the liquid collecting bottle is fixedly inserted with the air outlet pipe, the inner end of the air outlet pipe is inserted at the upper side inside the liquid collecting bottle, the outer end of the air outlet pipe is connected with the balloon, after a sharp needle head can be effectively prevented from penetrating through a pericardium, a beating heart enables a needle point to stab a heart machine, the overall safety performance of the device is greatly improved, and meanwhile, a piston is adopted for sealing, so that air can be prevented from entering the pericardium.

Description

Puncture needle for cardiology

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to puncture needle for intracardiac branch of academic or vocational study.

Background

In the prior art, a puncture extraction method is mostly adopted for treating patients with pericardial fluid. At present, a traditional needle is generally adopted for puncture, and after the needle penetrates into a pericardium, because the heart beats all the time, the needle point is easy to stab the myocardium, even the sudden cardiac arrest is caused, and great potential safety hazards exist; some schemes adopt a cannula type puncture needle, but the puncture needle is troublesome to operate, air can easily enter the pericardium, and improvement is needed urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a simple structure, reasonable in design, convenient to use's pjncture needle for the intracardiac branch of academic or vocational study can effectually prevent that sharp-pointed syringe needle from passing after the pericardium, and the heart of beating makes the needle point stab the heart machine, has improved the holistic security performance of device greatly, and what adopt simultaneously is that the piston seals, can prevent that the air from entering into the pericardium.

In order to achieve the above object, the utility model adopts the following technical scheme: it comprises a trocar, a needle core and a needle head; a needle core is movably inserted in the trocar, the left end of the needle core is fixedly provided with a needle head, and the needle head is exposed at the left side of the trocar; the device also comprises a liquid circulation groove, a liquid inlet hole, a liquid outlet hole, a piston, a sleeve, a rotating block, a handheld part, a liquid collecting bottle and a balloon; the left end of the sleeve is fixedly provided with a trocar, the right end of the needle core passes through the trocar and the sleeve and then extends to the right side of the sleeve, and the extending end is fixedly provided with a rotating block; the side wall of the left end of the trocar is fixedly provided with a plurality of liquid inlet holes, the side wall of the left side of the needle core inside the sleeve is fixedly provided with a plurality of liquid outlet holes, the needle core is of a hollow structure with an opening at the left end, the inside of the needle core is fixedly provided with a liquid circulation groove, and the liquid outlet holes are communicated with the inside of the liquid circulation groove; a piston is fixedly sleeved on the needle core in the sleeve, and the peripheral wall of the piston is abutted against the inner side wall of the sleeve; the upper side and the lower side of the side wall at the right end of the sleeve are symmetrically and fixedly provided with a handheld part, and the inner side wall at the right side of the sleeve is fixedly provided with a limiting block; the bottom of the sleeve is fixedly connected with a liquid outlet pipe, the liquid outlet pipe is communicated with the interior of the sleeve, and the upper end of the liquid outlet pipe is arranged at the bottom of the piston; the lower end of the liquid outlet pipe is inserted into the inner bottom of the liquid collecting bottle; an air outlet pipe is fixedly inserted at the upper end of the liquid collecting bottle, the inner end of the air outlet pipe is inserted at the upper side of the interior of the liquid collecting bottle, and the outer end of the air outlet pipe is connected with the balloon; the other side of the sacculus is fixedly provided with a one-way valve.

Further, the needle head is rotatably connected with the inner side wall of the trocar through threads.

Furthermore, the lateral wall of trocar left end equidistant fixed several prevent stifled arch that is provided with, the several prevents stifled arch and feed liquor hole alternate setting.

Furthermore, a scale layer is fixedly arranged on the side wall of the trocar.

Further, telescopic left end fixedly connected with cover be equipped with the fixed plate, the upper and lower both sides of fixed plate are equipped with the fixed column through the screw thread respectively soon, the left end fixedly connected with sucking disc of fixed column, the right-hand member fixedly connected with hand of fixed column is twisted.

Further, the taper angle of the needle tip is 9-11 °.

After the structure is adopted, the utility model discloses beneficial effect does: intracardiac pjncture needle for internal medicine, can effectually prevent that sharp-pointed syringe needle from passing behind the pericardium, the heart of beating makes the needle point stab heart machine, has improved the holistic security performance of device greatly, what adopt simultaneously is that the piston seals, can prevent that the air from entering into the pericardium, the utility model has the advantages of simple structure, it is reasonable to set up, the cost of manufacture is low.

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 these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

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

FIG. 3 is a schematic diagram of the operation of an embodiment.

Fig. 4 is a schematic view of the connection structure of the suction cup, the fixing column and the hand screw of the present invention.

Description of reference numerals:

the needle comprises a trocar 1, a needle core 2, a needle head 3, a sleeve 4, a rotating block 5, a liquid inlet hole 6, a liquid outlet hole 7, a liquid circulation groove 8, a piston 9, a handheld part 10, a limiting block 11, a liquid outlet pipe 12, a liquid collection bottle 13, a gas outlet pipe 14, a balloon 15, a one-way valve 16, a thread 17, an anti-blocking bulge 18, a scale layer 19, a fixing plate 20, a fixing column 21, a suction cup 22 and a hand screw 23.

Detailed Description

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

Referring to fig. 1 to 4, the technical solution adopted by the present embodiment is: the trocar comprises a trocar 1, a trocar core 2 and a needle head 3, wherein the trocar, the trocar core and the needle head are all made of medical grade alloy materials; a needle core 2 is movably inserted in the trocar 1, a needle head 3 is fixedly welded at the left end of the needle core 2, and the needle head 3 is exposed at the left side of the trocar 1; the liquid collecting device also comprises a liquid circulation groove 8, a liquid inlet hole 6, a liquid outlet hole 7, a piston 9, a sleeve 4, a rotating block 5, a handheld part 10, a liquid collecting bottle 13 and a balloon 15; a trocar 1 is fixedly welded at the left end of the sleeve 4, the right end of the needle core 2 passes through the trocar 1 and the sleeve 4 and then extends to the right side of the sleeve 4, and a rotating block 5 is fixedly welded at the extending end; the side wall of the left end of the trocar 1 is fixedly provided with a plurality of liquid inlet holes 6, so that pericardial effusion can conveniently flow into the trocar 1, the side wall of the left needle core 2 in the sleeve 4 is fixedly provided with a plurality of liquid outlet holes 7, the needle core 2 is of a hollow structure with an open left end, the interior of the needle core 2 is fixedly provided with a liquid circulation groove 8, and the liquid outlet holes 7 are communicated with the interior of the liquid circulation groove 8, so that liquid entering from the liquid inlet holes 6 can be conveniently conveyed to the liquid outlet end and falls into the sleeve 4; the needle core 2 in the sleeve 4 is provided with a piston 9 by an adhesive fixing sleeve, and the peripheral wall of the piston 9 is arranged in a manner of abutting against the inner side wall of the sleeve 4; the upper side and the lower side of the side wall of the right end of the sleeve 4 are symmetrically and fixedly provided with a handheld part 10, and the inner side wall of the right side of the sleeve 4 is fixedly welded with a limiting block 11; the bottom of the sleeve 4 is fixedly connected with a liquid outlet pipe 12 through gluing, the liquid outlet pipe 12 is communicated with the interior of the sleeve 4, the upper end of the liquid outlet pipe 12 is arranged at the bottom of the piston 9, and before liquid suction, the piston 9 blocks the upper end of the liquid inlet pipe, so that air can be prevented from entering the pericardium; the lower end of the liquid outlet pipe 12 is inserted into the inner bottom of the liquid collecting bottle 13; an air outlet pipe 14 is fixedly inserted at the upper end of the liquid collecting bottle 13, the inner end of the air outlet pipe 14 is inserted at the upper side inside the liquid collecting bottle 13, and the outer end of the air outlet pipe 14 is connected with a balloon 15; the other side of the balloon 15 is fixedly provided with a one-way valve 16 through bolts.

Furthermore, the needle 3 is rotatably connected with the inner side wall of the trocar 1 through the thread 17, so that the trocar 1 and the needle 3 are prevented from being displaced when the needle 3 penetrates into subcutaneous tissues.

Further, the lateral wall of trocar 1 left end equidistant fixed several prevent stifled arch 18 that is provided with, the several prevents stifled arch 18 and feed liquor hole 6 alternate setting, prevents that the soft tissue is adsorbed at the in-process of imbibition, blocks up feed liquor hole 6.

Furthermore, the side wall of the trocar 1 is fixedly carved with a scale layer 19, so that the puncturing depth can be conveniently and more visually seen.

Further, the fixed welded sleeve in left end of sleeve 4 be equipped with fixed plate 20, the upper and lower both sides of fixed plate 20 are equipped with fixed column 21 through screw thread 17 soon respectively, the left end fixedly connected with sucking disc 22 of fixed column 21, the right-hand member fixedly connected with hand of fixed column 21 is twisted 23, human skin surface is unevenness, the hand is twisted 23 and can be adjusted the length of fixed column 21, conveniently adapts to different human skin, sucking disc 22 can adsorb the surface of skin, conveniently fixes the device wholly.

Further, the taper angle of the sharp end of the needle 3 is 9-11 degrees.

The working principle of the specific embodiment is as follows: the needle head 3 is rotatably exposed at the left end of the trocar 1 through the threads 17, then a doctor holds the handheld part 10 to implant the needle head 3 into subcutaneous tissue of the chest of a patient until the needle head penetrates through the pericardium, the insertion depth can be more visually seen through the scale layer 19, at the moment, the upper end of the liquid outlet pipe 12 is blocked by the piston 9, air can be effectively prevented from entering the pericardium of the patient, then the needle head 3 is slowly moved rightwards by rotating the rotating block 5, the piston 9 is driven to move rightwards, and at the moment, the upper end of the liquid outlet pipe 12 is communicated with the inside of the sleeve until the piston 9 moves to the limiting block 11; air in the liquid collecting bottle 13 is pumped out through the balloon 15 and the one-way valve 16, at the moment, the inside of the liquid collecting bottle 13 is in a negative pressure state, effusion in the pericardium enters the inside of the liquid circulation groove 8 through the liquid inlet hole 6 on the trocar 1, so that the effusion in the pericardium flows to the liquid outlet hole 7 through the liquid circulation groove 8, and then enters the inside of the liquid collecting bottle 13 from the liquid outlet pipe 12 for storage.

After adopting above-mentioned structure, this embodiment beneficial effect does:

1. the needle head 3 is rotatably arranged in the left side of the trocar 1 through the threads 17, and the needle head 3 is rotatably retracted into the interior of the trocar 1 after penetrating into the pericardium, so that the phenomenon that the sharp needle head 3 penetrates through the pericardium and the beating heart causes the needle point to stab the heart machine can be effectively prevented, and the overall safety performance of the device is greatly improved;

2. the piston 9 is adopted for sealing, and before liquid suction, the piston 9 blocks the upper end of the liquid inlet pipe, so that air can be prevented from entering the pericardium.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A puncture needle for cardiology comprises a trocar (1), a needle core (2) and a needle head (3); a needle core (2) is movably inserted in the trocar (1), a needle head (3) is fixedly arranged at the left end of the needle core (2), and the needle head (3) is exposed at the left side of the trocar (1); the method is characterized in that: the device also comprises a liquid circulation groove (8), a liquid inlet hole (6), a liquid outlet hole (7), a piston (9), a sleeve (4), a rotating block (5), a handheld part (10), a liquid collecting bottle (13) and a balloon (15); the left end of the sleeve (4) is fixedly provided with a trocar (1), the right end of the needle core (2) passes through the trocar (1) and the sleeve (4) and then extends to the right side of the sleeve (4), and the extending end is fixedly provided with a rotating block (5); a plurality of liquid inlet holes (6) are fixedly formed in the side wall of the left end of the trocar (1), a plurality of liquid outlet holes (7) are fixedly formed in the side wall of the left needle core (2) in the sleeve (4), the needle core (2) is of a hollow structure with an open left end, a liquid circulation groove (8) is fixedly formed in the needle core (2), and the liquid outlet holes (7) are communicated with the inside of the liquid circulation groove (8); a piston (9) is fixedly sleeved on the needle core (2) in the sleeve (4), and the peripheral wall of the piston (9) is abutted against the inner side wall of the sleeve (4); the upper side and the lower side of the side wall at the right end of the sleeve (4) are symmetrically and fixedly provided with a handheld part (10), and the inner side wall at the right side of the sleeve (4) is fixedly provided with a limiting block (11); the bottom of the sleeve (4) is fixedly connected with a liquid outlet pipe (12), the liquid outlet pipe (12) is communicated with the interior of the sleeve (4), and the upper end of the liquid outlet pipe (12) is arranged at the bottom of the piston (9); the lower end of the liquid outlet pipe (12) is inserted into the inner bottom of the liquid collecting bottle (13); an air outlet pipe (14) is fixedly inserted at the upper end of the liquid collecting bottle (13), the inner end of the air outlet pipe (14) is inserted at the upper side of the interior of the liquid collecting bottle (13), and the outer end of the air outlet pipe (14) is connected with a balloon (15); the other side of the saccule (15) is fixedly provided with a one-way valve (16).

2. The intracardiac puncture needle according to claim 1, characterized in that: the needle head (3) is rotatably connected with the inner side wall of the trocar (1) through a thread (17).

3. The intracardiac puncture needle according to claim 1, characterized in that: the side wall of the left end of the trocar (1) is fixedly provided with a plurality of anti-blocking bulges (18) at equal intervals, and the plurality of anti-blocking bulges (18) and the liquid inlet hole (6) are arranged alternately.

4. The intracardiac puncture needle according to claim 1, characterized in that: the side wall of the trocar (1) is fixedly provided with a scale layer (19).

5. The intracardiac puncture needle according to claim 1, characterized in that: the left end of sleeve (4) fixed cover be equipped with fixed plate (20), the upper and lower both sides of fixed plate (20) are equipped with fixed column (21) through the screw thread soon respectively, the left end fixedly connected with sucking disc (22) of fixed column (21), the right-hand member fixedly connected with hand of fixed column (21) is twisted (23).

6. The intracardiac puncture needle according to claim 1, characterized in that: the taper angle of the tip of the needle (3) is 9-11 degrees.