CN215839383U - Pleuroperitoneal cavity puncture outfit - Google Patents

Pleuroperitoneal cavity puncture outfit Download PDF

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Publication number
CN215839383U
CN215839383U CN202121968404.1U CN202121968404U CN215839383U CN 215839383 U CN215839383 U CN 215839383U CN 202121968404 U CN202121968404 U CN 202121968404U CN 215839383 U CN215839383 U CN 215839383U
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Prior art keywords
catheter
central needle
needle
pleuroperitoneal cavity
cavity puncture
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CN202121968404.1U
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Chinese (zh)
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常树建
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Affiliated Hospital of Jiangnan University
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Affiliated Hospital of Jiangnan University
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Abstract

The utility model provides a pleuroperitoneal cavity puncture outfit, which relates to the technical field of medical instruments and comprises a catheter with a hollow interior and a central needle with a hollow interior, wherein the first end of the central needle, which is provided with a needle point, penetrates into the second end of the catheter and penetrates out of the first end of the catheter; the second end of the catheter is in threaded connection with the second end of the central needle; the second end of the central needle is also connected to the nipple of the syringe. The center needle is hollow inside, and the second end of the center needle is connected with the injector, so that the center needle can be used for conveniently sucking liquid in the pleuroperitoneal cavity; in addition, the catheter is provided with a drainage tube for draining the pleuroperitoneal cavity liquid.

Description

Pleuroperitoneal cavity puncture outfit
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a pleuroperitoneal cavity puncture outfit.
Background
Pleuroperitoneal cavity puncture is a method for draining pleuroperitoneal cavity effusion, determining the nature of the effusion, finding out pathogen and assisting diagnosis and treatment; it is often used in patients with pleural effusion and ascites. The existing pleuroperitoneal cavity puncture technology comprises a direct puncture method and a transguide wire puncture method, wherein a guide wire is required in the transguide wire puncture method, the operation steps are complicated, and time and labor are wasted. The direct puncture method requires frequent B-mode ultrasound for guidance during operation, and is laborious and troublesome to operate.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pleuroperitoneal cavity puncture outfit which can be used for puncture by a direct puncture method without frequently using B ultrasonic guidance after B ultrasonic positioning, and has the advantages of simple operation, time saving and labor saving.
The utility model provides a pleuroperitoneal cavity puncture outfit which comprises a catheter and a central needle, wherein the catheter is hollow inside, and the central needle is hollow inside, and the first end, provided with a needle point, of the central needle penetrates into the catheter from the second end of the catheter and penetrates out of the first end of the catheter; the second end of the catheter is in threaded connection with the second end of the central needle; the second end of the central needle is also connected to the nipple of the syringe.
In an alternative embodiment, the side surface of the catheter is communicated with a side branch, and the top end of the side branch is provided with a joint connected with a drainage bag.
In an alternative embodiment, the inner side wall of the first end of the conduit is provided with at least one raised barrier; the central needle is provided with a boss abutted against the blocking piece.
In an alternative embodiment, the resistive patch is tapered.
In an alternative embodiment, the second end of the catheter is provided with a first internal thread, and the second end of the central needle is provided with a first external thread matched with the first internal thread; the guide pipe is also provided with a cap plug, and the cap plug is also provided with a second external thread matched with the first internal thread.
In alternative embodiments, the side branch is at least 10cm in length.
In an alternative embodiment, the length of the conduit is 12cm to 15 cm.
In an alternative embodiment, the first end of the cap plug is provided with a second external thread matched with the first internal thread, and the second end of the cap plug is provided with a second internal thread matched with the joint; and a third external thread matched with the second internal thread is arranged on the joint.
In an alternative embodiment, a catheter clip is also provided on the side branch.
In an alternative embodiment, the number of cap plugs is 2.
The utility model has the beneficial effects that: according to the pleuroperitoneal cavity puncture outfit, the central needle sleeve is arranged in the catheter, and the central needle is hollow, and the second end (the non-needle tip) of the central needle is connected with the injector, so that medical workers can suck liquid in the pleuroperitoneal cavity through the injector and the central needle after penetrating the catheter and the central needle into the pleuroperitoneal cavity by using a direct puncture method under local anesthesia; therefore, a doctor can judge whether the focus position is reached or not through the extracted liquid, and the B ultrasonic guide does not need to be used repeatedly after the B ultrasonic positioning; the utility model has simple operation, time and labor saving and improves the working efficiency of medical care personnel.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of a tapered barrier and boss of the present invention;
FIG. 4 is a cross-sectional view of a catheter and its baffle of the present invention;
FIG. 5 is an enlarged view of B in FIG. 1;
FIG. 6 is a schematic view of the second end of the conduit and the cap plug of the present invention;
fig. 7 is another schematic structural diagram of the present invention.
In the figure: 1-a central needle; 11-a boss; 12-a first external thread; 2-a catheter; 21-a resist; 22-a first internal thread; a 23-side branch; 231-a third external thread; 24-a cap plug; 241-second external threads; 242-second internal thread; 25-a catheter clip; 3-a syringe; 31-nipple.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to facilitate understanding of the present embodiment, a pleuroperitoneal cavity puncture device disclosed in the present invention will be described in detail by way of embodiments.
Referring to fig. 1, the present embodiment provides a pleuroperitoneal cavity puncture outfit, which comprises an inner hollow catheter 2 and an inner hollow central needle 1, wherein a first end of the central needle 1 provided with a needle point penetrates into the second end of the catheter 2 and penetrates out of the first end of the catheter 2; the second end of the catheter 2 is in threaded connection with the second end of the central needle 1; as shown in fig. 7, the second end of the central needle 1 is also connected to the nipple 31 of the syringe 3.
Specifically, as shown in fig. 1, the first end of the center needle 1 (or the catheter 2) refers to the lower end, and the second end of the center needle 1 (or the catheter 2) refers to the upper end.
As shown in fig. 2, the second end of the catheter 2 is provided with an opening of the central needle 1, and the needle tip of the central needle 1 penetrates out of the opening of the second end of the catheter 2; this enables the central needle 1 to be used for puncturing tissue, while the second end of the catheter 2 is provided with an arc-like shape enabling penetration into the depth of the tissue together with the central needle 1 after the central needle 1 has punctured the tissue.
As shown in fig. 5, the second end of the center needle 1 is provided with a first external thread 12, the second end of the catheter 2 is provided with a first internal thread 22, and the second end of the center needle 1 and the second end of the catheter 2 are threadedly coupled. As shown in fig. 7, the second end of the central needle 1 is connected to the nipple end of the syringe 3. In this embodiment, a 20ml syringe 3 is used, and therefore the outer diameter of the second end of the central needle 1 should be adapted to the nipple 31 of the 20ml syringe 3.
In the specific implementation of the embodiment, after the central needle 1 is used for puncturing the subcutaneous part of the puncture point, an operator can suck back the puncture point while puncturing, and after the central needle 1 punctures the parietal pleuroperitoneal membrane, the injector 3 can suck back the liquid in the pleuroperitoneal cavity from the central needle 1, can rotate to withdraw from the central needle at the moment, keeps the catheter in the pleuroperitoneal cavity, and drains the pleuroperitoneal fluid. Medical personnel need not frequent repetitious usage B ultrasonic location, and easy operation is convenient, has improved medical personnel's work efficiency.
Optionally, the length of the conduit 2 is 12 cm-15 cm.
Specifically, the length of the central needle 1 is 12 cm-15 cm, but the central needle 1 penetrates out of the catheter 2 at the first end, so that the length of the central needle 1 is slightly longer than that of the catheter 2.
Preferably, as shown in fig. 1 and 7, the side surface of the catheter 2 is communicated with a side branch 23, and the top end of the side branch 23 is provided with a connector connected with a drainage bag.
Here, the side branch 23 is Y-shaped with the catheter 2, and the side branch 23 communicates with the catheter 2. A connector to the drainage bag is provided at the end of the side branch 23 to connect the drainage bag. The adapter of this embodiment can be provided with internal or external threads to be threadedly connected with the adapter of the drainage bag.
Optionally, the side branch 23 is at least 10cm in length.
In this embodiment, a 10cm wide disposable sterile application catheter is used to secure the drainage tube and its side branch 23 during the procedure, and in order to facilitate removal or installation of the drainage bag, the side branch 23 is set to a length of more than 10cm so that the connector can be exposed and connected to the drainage bag connector.
Preferably, as shown in fig. 2, the inner side wall of the first end of the conduit 2 is provided with at least one raised barrier 21; the central needle 1 is provided with a boss 11 which is abutted with the blocking sheet 21.
Here, as shown in fig. 2, the blocking piece 21 is abutted to the boss 11 up and down, so as to fix the central needle 1 conveniently, improve the stability of the central needle 1 in the pleuroperitoneal cavity, effectively avoid the displacement of the central needle 1, and ensure the success rate of the operation. In this embodiment, 3 to 5 blocking pieces 21 can be arranged along the circumferential direction of the inner cavity of the cylindrical catheter 2; the shape of the resistance sheet 21 may be a cylindrical shape as shown in fig. 2.
Further, as shown in fig. 3 and 4, the blocking sheet 21 is tapered.
In particular, the cylindrical stop 21 of fig. 2 makes the inner diameter of the second end of the catheter 2 smaller, which is not conducive to drainage. For this reason, the present embodiment provides the baffle 21 in a tapered shape having a narrow top and a wide bottom, for example, a triangular pyramid shape as shown in fig. 3 and 4, thereby effectively reducing the flow-leading resistance.
Preferably, as shown in fig. 5, the second end of the catheter 2 is provided with a first internal thread 22, and the second end of the central needle 1 is provided with a first external thread 12 matched with the first internal thread 22; as shown in fig. 6, the catheter 2 is further provided with a cap plug 24, and the cap plug 24 is also provided with a second external thread 241 adapted to the first internal thread 22.
Specifically, as shown in fig. 5, the central needle 1 is widened at the outer diameter of the first end, and the outer diameter of the central needle is matched with the inner diameter of the catheter 2; and the central needle 1 is provided with external threads on the outer wall to be in threaded connection with the catheter 2, so that the catheter 2 and the central needle 1 can be conveniently fixed. The inner diameter of the central needle 1 at the first end should be adapted to the nipple 31 of the 20ml syringe 3 in order to facilitate the aspiration of the fluid in the thoracic and abdominal cavity.
Here, as shown in FIG. 6, after the catheter 2 is inserted into the thoracic cavity and the central needle 1 is withdrawn, the second end of the catheter 2 is closed with a cap plug 24, and the fluid in the thoracic cavity is drained into the drainage bag using the side branch 23.
Preferably, as shown in fig. 6, a first end of the cap plug 24 is provided with a second external thread 241 adapted to the first internal thread, and a second end of the cap plug 24 is provided with a second internal thread 242 adapted to the joint; as shown in fig. 1, a third external thread 231 adapted to the second internal thread 242 is provided on the joint.
In this embodiment, the cap plug 24 is provided with a dual-purpose type, one end of which is provided with a second external thread 241 for closing the second end of the catheter 2 after the puncture is completed; one end is provided with a second internal thread 242 fitted to the connector to close the lateral branch 23 during puncturing, preventing pneumothorax.
Preferably, as shown in fig. 1 and 7, a catheter clip 25 is also provided on the side branch 23.
Preferably, the number of the cap plugs 24 is 2.
Here, in order to facilitate the closing of the lateral branch 23, a catheter clip 25 is additionally provided on the lateral branch 23. The present embodiment also sets the number of the cap plugs 24 to 2, facilitating the simultaneous closing of the lateral branches 23 and the second end of the conduit 2.
The pleuroperitoneal cavity puncture outfit of the embodiment is provided with a catheter 2 and a central needle 1, wherein a first end of the catheter 2 is provided with a first internal thread 22, and a second end is provided with an opening of the central needle 1. The central needle 1 is sleeved in the catheter 2, the first end of the central needle 1 is provided with an external thread to be in threaded connection with the catheter 2, and the second end of the central needle can penetrate out of the opening; the catheter 2 is also provided with a side branch 23, and the side branch 23 is connected with the drainage bag through a joint; the side branch 23 is longer than 10cm, so that the aseptic application and fixation are convenient; the second end of the catheter 2 is also provided with a stop piece 21, and the central needle 1 is provided with a boss 11 which is vertically abutted against the stop piece 21, so that the stability is convenient to maintain during operation; the resistance sheet 21 is arranged into a pyramid shape, so that the drainage resistance is reduced; the catheter 2 is further provided with a cap plug 24 to facilitate the use of the cap plug 24 to seal off the first end of the catheter 2 during drainage using the side branch 23.
The embodiment has low cost and can be set to be disposable; this embodiment can accomplish accurate puncture fast, has improved patient's security, has improved doctor's work efficiency.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A pleuroperitoneal cavity puncture outfit is characterized by comprising a catheter with a hollow interior and a central needle with a hollow interior, wherein the first end of the central needle, which is provided with a needle point, penetrates into the second end of the catheter and penetrates out of the first end of the catheter; the second end of the catheter is in threaded connection with the second end of the central needle; the second end of the central needle is also connected to the nipple of the syringe.
2. The pleuroperitoneal cavity puncture device as claimed in claim 1, wherein the side of the catheter is connected with a side branch, and the top end of the side branch is provided with a connector connected with a drainage bag.
3. The pleuroperitoneal cavity puncture instrument as claimed in claim 1, wherein the inner side wall of the first end of the conduit is provided with at least one raised barrier; the central needle is provided with a boss abutted against the blocking piece.
4. The pleuroperitoneal cavity puncture instrument as claimed in claim 3, wherein said blocking piece is tapered.
5. The pleuroperitoneal cavity puncture instrument as claimed in claim 2, wherein the second end of the catheter is provided with a first internal thread, and the second end of the central needle is provided with a first external thread adapted to the first internal thread; the guide pipe is also provided with a cap plug, and the cap plug is also provided with a second external thread matched with the first internal thread.
6. The pleuroperitoneal puncture instrument of claim 2, wherein the length of said side branch is at least 10 cm.
7. The pleuroperitoneal cavity puncture device according to claim 2, wherein the length of said catheter is 12 cm-15 cm.
8. The pleuroperitoneal cavity puncture instrument as claimed in claim 5, wherein the first end of the cap plug is provided with a second external thread adapted to the first internal thread, and the second end of the cap plug is provided with a second internal thread adapted to the joint; and a third external thread matched with the second internal thread is arranged on the joint.
9. The pleuroperitoneal cavity puncture instrument as claimed in claim 2, wherein a catheter clip is further provided on the side branch.
10. The pleuroperitoneal cavity puncture instrument as claimed in claim 5, wherein the number of said cap plug is 2.
CN202121968404.1U 2021-08-20 2021-08-20 Pleuroperitoneal cavity puncture outfit Active CN215839383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121968404.1U CN215839383U (en) 2021-08-20 2021-08-20 Pleuroperitoneal cavity puncture outfit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121968404.1U CN215839383U (en) 2021-08-20 2021-08-20 Pleuroperitoneal cavity puncture outfit

Publications (1)

Publication Number Publication Date
CN215839383U true CN215839383U (en) 2022-02-18

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Application Number Title Priority Date Filing Date
CN202121968404.1U Active CN215839383U (en) 2021-08-20 2021-08-20 Pleuroperitoneal cavity puncture outfit

Country Status (1)

Country Link
CN (1) CN215839383U (en)

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