CN214318052U

CN214318052U - Focus puncture aspirator

Info

Publication number: CN214318052U
Application number: CN202022342713.XU
Authority: CN
Inventors: 黄豪杰
Original assignee: Shunde Hospital Of Guangzhou University Of Traditional Chinese Medicine
Current assignee: Shunde Hospital Of Guangzhou University Of Traditional Chinese Medicine
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-10-01
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a focus puncture aspirator relates to medical instrument technical field, has solved in the current aspirator that the syringe is connected the operation difficulty with the pjncture needle, is connected unstable, the poor problem of leakproofness, and its technical scheme main points are: the puncture needle comprises an injector and a puncture needle and is characterized by also comprising a puncture sleeve, wherein the tail end of the puncture sleeve is provided with a holding handle, one side of the holding handle is provided with a placing groove, and a connecting pipe communicated with the puncture sleeve is arranged in the placing groove; the outer side of the connecting pipe is provided with a first external thread, and the inner side of the connecting pipe is provided with a first internal thread; the tail end of the puncture needle is provided with a holding body, the side of the holding body facing the puncture needle is provided with a connecting cavity, and the inner wall of the connecting cavity is provided with a second internal thread matched with the first external thread; the nipple outer wall of syringe front end is equipped with the second external screw thread with first internal thread fit, and the whole process need not puncture many times, and the installation and the dismantlement easy operation of syringe, puncture needle, syringe and puncture sleeve pipe connection's leakproofness are strong, and suction effect is good.

Description

Focus puncture aspirator

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, it relates to a focus puncture aspirator.

Background

When the deep focus is punctured, under the guidance of an X-ray C-arm machine or a CT (computed tomography), a puncture needle sucks focus liquid after reaching the focus along a puncture path; if the liquid is little or no, a small amount of sterile physiological saline can be injected firstly, then the mixed liquid is pumped back, and finally the liquid is examined for pathological biopsy or bacterial culture and the like, so that the property of the focus is determined.

At present, the commonly used aspirator is generally formed by splicing the nipple of the existing syringe and a puncture needle. After the puncture needle is punctured into the focus part of the patient, the piston is pulled by the piston handle to extract the liquid at the focus part. However, the existing aspirator has multiple punctures, which brings more pain to the patient; in addition, the connection operation between the syringe and the puncture needle is difficult, the connection is unstable, the sealing performance is poor, and the puncture error and the non-ideal suction effect are easy to occur.

Therefore, how to design a focus puncture aspirator is a problem which is urgently needed to be solved at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the operation of connecting an injector and a puncture needle in the existing aspirator is difficult, the connection is unstable, the sealing performance is poor, the puncture is easy to cause errors and the aspiration effect is not ideal, the utility model aims to provide a focus puncture aspirator.

The above technical purpose of the present invention can be achieved by the following technical solutions: a focus puncture aspirator comprises an injector, a puncture needle and a puncture cannula, wherein the tail end of the puncture cannula is provided with a holding handle, one side of the holding handle is provided with a placing groove, and a connecting pipe communicated with the puncture cannula is arranged in the placing groove; the outer side of the connecting pipe is provided with a first external thread, and the inner side of the connecting pipe is provided with a first internal thread; the tail end of the puncture needle is provided with a holding body, the side of the holding body facing the puncture needle is provided with a connecting cavity, and the inner wall of the connecting cavity is provided with a second internal thread matched with the first external thread; and a second external thread matched with the first internal thread is arranged on the outer wall of the nipple at the front end of the injector.

By adopting the technical scheme, when the deep focus is punctured, the puncture needle is inserted into the puncture sleeve from the connecting pipe, so that the connecting pipe is placed into the connecting cavity, and the holding body and the holding handle are relatively fixed after the first external thread is in threaded fit with the second internal thread; treat that the pjncture needle reachs behind the focus position take out the pjncture needle to in inserting the nipple of syringe the connecting tube, make syringe and handle of gripping relatively fixed through second external screw thread and first female thread cooperation, the piston of control syringe carries out the suction work, and the whole process need not many times puncture, the installation and the dismantlement easy operation of syringe, and pjncture needle, syringe and puncture bushing's leakproofness are strong, and suction effect is good.

The utility model discloses further set up to: the inside of the connecting pipe is provided with an annular boss, and the end surface of the nipple is annularly provided with a sealing gasket which can be contacted with the annular boss.

Through adopting above-mentioned technical scheme, seal ring and annular boss contact back, have strengthened the stability that nipple and connecting pipe are connected, have strengthened aspirator suction effect.

The utility model discloses further set up to: the inner wall of the connecting pipe is provided with an annular groove, and a trumpet-shaped tightening ring belt is arranged in the annular groove in an inner ring mode.

By adopting the technical scheme, the tightening ring band can clean the liquid carried by the outer wall of the puncture needle, and meanwhile, the situation that external sundries or air enters the puncture sleeve is reduced in the process of replacing the injector.

The utility model discloses further set up to: two limiting grooves for inserting the syringe are symmetrically arranged on the inner wall of the placing groove.

Through adopting above-mentioned technical scheme, when the nipple is connected with the connecting pipe, the syringe inserts in the spacing recess, and the condition of being convenient for now the relative rocking of handle of gripping and syringe takes place.

The utility model discloses further set up to: the puncture cannula is 12-18cm in length.

By adopting the technical scheme, the puncture suction device can be applied to puncture of most lesions, and the applicability of the suction device is enhanced.

The utility model discloses further set up to: the outer wall of the puncture cannula is provided with scale marks distributed along the length direction of the puncture cannula.

By adopting the technical scheme, the puncture depth can be clearly displayed by utilizing the scale marks.

The utility model discloses further set up to: the front end of the puncture sleeve is provided with a conical curved surface which is seamlessly connected with the tip of the puncture needle.

By adopting the technical scheme, the conical curved surface is seamlessly connected with the tip of the puncture needle, so that the condition of damaging internal tissues in the puncture process is reduced.

The utility model discloses further set up to: one side of the holding handle facing the puncture needle is provided with a concave part for placing fingers, and one side of the holding handle back to the puncture needle is provided with a convex part contacted with the palm center.

Through adopting above-mentioned technical scheme, make things convenient for one-hand control to grip the handle and carry out puncture work.

To sum up, the utility model discloses following beneficial effect has: when the deep focus is punctured, the puncture needle is inserted into the puncture sleeve from the connecting pipe, so that the connecting pipe is placed into the connecting cavity, and the holding body and the holding handle are relatively fixed after the first external thread is in threaded fit with the second internal thread; after the puncture needle reaches a focus part, the puncture needle is taken out, a nipple of the injector is inserted into the connecting pipe, the injector and the holding handle are relatively fixed through the matching of the second external thread and the first internal thread, the piston of the injector is controlled to perform pumping work, the whole process does not need to puncture for many times, the installation and disassembly operations of the injector are simple, the connection tightness of the puncture needle, the injector and the puncture sleeve is strong, and the pumping effect is good; after the sealing washer is contacted with the annular boss, the connection stability of the nipple and the connecting pipe is enhanced, and the suction effect of the suction device is enhanced; the liquid carried by the outer wall of the puncture needle can be cleaned by tightening the ring belt, and meanwhile, the situation that external sundries or air enters the puncture sleeve is reduced in the process of replacing the injector.

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 schematic structural view of a puncture needle and a puncture cannula in an embodiment of the present invention;

FIG. 2 is a schematic view of the connection structure of the syringe and the puncture cannula according to the embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of the holding body according to the embodiment of the present invention;

FIG. 4 is a schematic view of the internal structure of the connecting tube in the embodiment of the present invention;

FIG. 5 is a schematic structural view of a grip handle according to an embodiment of the present invention;

FIG. 6 is a schematic view of the nipple structure of the embodiment of the present invention

In the figure: 101. puncturing a cannula; 102. a conic surface; 103. a grip handle; 104. placing a groove; 105. a connecting pipe; 106. a first internal thread; 107. an annular boss; 108. a first external thread; 109. an annular groove; 110. tightening the ring belt; 111. a boss portion; 112. a recessed portion; 113. scale lines; 114. a limiting groove; 201. a grip body; 202. puncturing needle; 203. a connecting cavity; 204. a second internal thread; 301. an injector; 302. a nipple; 303. a second external thread; 304. a gasket is provided.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings 1 to 6 and the embodiments.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b): a focus puncture aspirator, as shown in figures 1-4, comprises an injector 301, a puncture needle 202, and a puncture cannula 101, wherein the tail end of the puncture cannula 101 is provided with a holding handle 103, one side of the holding handle 103 is provided with a placing groove 104, and the placing groove 104 is internally provided with a connecting pipe 105 communicated with the puncture cannula 101. The connecting tube 105 has a first external thread 108 on the outside and a first internal thread 106 on the inside. The tail end of the puncture needle 202 is provided with a holding body 201, the side of the holding body 201 facing the puncture needle 202 is provided with a connecting cavity 203, and the inner wall of the connecting cavity 203 is provided with a second internal thread 204 matched with the first external thread 108; the outer wall of the nipple 302 at the front end of the syringe 301 is provided with a second external thread 303 which is engaged with the first internal thread 106. When the deep focus is punctured, the puncture needle 202 is inserted into the puncture sleeve 101 from the connecting pipe 105, so that the connecting pipe 105 is placed into the connecting cavity 203, and the holding body 201 and the holding handle 103 are relatively fixed after the first external thread 108 is in threaded fit with the second internal thread 204; after the puncture needle 202 reaches a focus part, the puncture needle 202 is taken out, the nipple 302 of the injector 301 is inserted into the connecting pipe 105, the injector 301 and the holding handle 103 are relatively fixed through the matching of the second external thread 303 and the first internal thread 106, the piston of the injector 301 is controlled to perform pumping work, the whole process does not need to puncture for many times, the installation and disassembly operations of the injector 301 are simple, the puncture needle 202, the injector 301 and the puncture sleeve 101 are high in connection tightness, and the pumping effect is good.

As shown in FIGS. 4 and 6, the connecting tube 105 is provided with an annular boss 107 inside, and the end face of the nipple 302 is provided with a sealing washer 304 capable of contacting with the annular boss 107. After the sealing washer 304 contacts the annular boss 107, the stability of the connection between the nipple 302 and the connecting pipe 105 is enhanced, and the suction effect of the aspirator is enhanced.

As shown in FIG. 4, an annular groove 109 is formed in the inner wall of the connecting tube 105, and a tightening ring band 110 having a trumpet shape is disposed in the annular groove 109. Tightening the band 110 cleans the outer wall of the needle 202 of fluid carried thereby while reducing the likelihood of foreign objects or air entering the puncture cannula 101 during replacement of the syringe 301.

As shown in fig. 5, two limit grooves 114 for inserting the syringe 301 are symmetrically arranged on the inner wall of the placing groove 104. When the nipple 302 is connected to the connection tube 105, the syringe 301 is inserted into the stopper groove 114, so that the grip handle 103 and the syringe 301 are shaken relative to each other.

As shown in FIG. 1, the penetrating cannula 101 is 12-18cm in length. In the embodiment, the puncture cannula 101 has a length of 15cm, and can be applied to puncture of most lesions, so that the applicability of the aspirator is enhanced.

As shown in fig. 1, the outer wall of the puncture cannula 101 is provided with scale lines 113 arranged along the length direction thereof, each scale line has a length of 1cm, and the puncture depth can be clearly displayed by using the scale lines 113.

As shown in fig. 1 and 2, the front end of the puncture cannula 101 is provided with a tapered surface 102 which is seamlessly connected with the tip of the puncture needle 202, and the tapered surface 102 is seamlessly connected with the tip of the puncture needle 202, so that the condition of damaging the internal tissue in the puncture process is reduced.

As shown in fig. 1, the side of the holding handle 103 facing the puncture needle 202 is provided with a concave part 112 for placing fingers, and the side of the holding handle 103 opposite to the puncture needle 202 is provided with a convex part 111 for contacting with the palm, so that the holding handle 103 can be conveniently controlled by one hand to perform puncture.

The working process is as follows: when the deep focus is punctured, the puncture needle 202 is inserted into the puncture sleeve 101 from the connecting pipe 105, so that the connecting pipe 105 is placed into the connecting cavity 203, and the holding body 201 and the holding handle 103 are relatively fixed after the first external thread 108 is in threaded fit with the second internal thread 204; after the puncture needle 202 reaches a focus part, the puncture needle 202 is taken out, the nipple 302 of the injector 301 is inserted into the connecting pipe 105, the injector 301 and the holding handle 103 are relatively fixed through the matching of the second external thread 303 and the first internal thread 106, the piston of the injector 301 is controlled to perform pumping work, the whole process does not need to puncture for many times, the installation and disassembly operations of the injector 301 are simple, the puncture needle 202, the injector 301 and the puncture sleeve 101 are high in connection tightness, and the pumping effect is good.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A focus puncture aspirator comprises an injector (301) and a puncture needle (202), and is characterized by further comprising a puncture cannula (101), wherein the tail end of the puncture cannula (101) is provided with a holding handle (103), one side of the holding handle (103) is provided with a placing groove (104), and a connecting pipe (105) communicated with the puncture cannula (101) is arranged in the placing groove (104); a first external thread (108) is arranged on the outer side of the connecting pipe (105), and a first internal thread (106) is arranged on the inner side of the connecting pipe; a holding body (201) is arranged at the tail end of the puncture needle (202), a connecting cavity (203) is arranged on the side, facing the puncture needle (202), of the holding body (201), and a second internal thread (204) matched with the first external thread (108) is arranged on the inner wall of the connecting cavity (203); the outer wall of a nipple (302) at the front end of the injector (301) is provided with a second external thread (303) matched with the first internal thread (106);

an annular groove (109) is formed in the inner wall of the connecting pipe (105), and a flared tightening ring belt (110) is arranged in the annular groove (109) in an inner ring mode.

2. A lesion puncture aspirator according to claim 1, characterized in that the connecting tube (105) is internally provided with an annular boss (107), and the end face of the nipple (302) is annularly provided with a sealing washer (304) which can be contacted with the annular boss (107).

3. A lesion puncture aspirator according to claim 1, wherein, two limiting grooves (114) for inserting the syringe (301) are symmetrically arranged on the inner wall of the placing groove (104).

4. A focal puncture aspirator according to claim 1, wherein the puncture cannula (101) has a length of 12-18 cm.

5. A lesion puncture aspirator according to claim 1, wherein the outer wall of the puncture cannula (101) is provided with graduation marks (113) arranged along the length direction thereof.

6. A lesion puncture aspirator according to claim 1, characterized in that the front end of the puncture cannula (101) is provided with a tapered surface (102) which seamlessly engages with the tip of the puncture needle (202).

7. A lesion aspiration device as claimed in claim 1, wherein the side of the grip handle (103) facing the puncture needle (202) is provided with a depression (112) for placing a finger thereon, and a protrusion (111) contacting the palm of the hand on the side facing away from the puncture needle (202).