CN216169126U

CN216169126U - Medical drainage appliance for subcutaneous effusion negative pressure drainage

Info

Publication number: CN216169126U
Application number: CN202122564179.1U
Authority: CN
Inventors: 陈友雯; 杨绍平
Original assignee: Sichuan Peoples Hospital of Sichuan Academy of Medical Sciences
Current assignee: Sichuan Peoples Hospital of Sichuan Academy of Medical Sciences
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-05
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a medical drainage appliance for negative-pressure drainage of subcutaneous effusion, which comprises a negative-pressure drainage tube barrel, a piston assembly and a push rod, wherein a negative-pressure tube cavity is arranged in the negative-pressure drainage tube barrel; the piston assembly comprises a piston head and an external threaded column which is fixedly connected with the piston head, the piston head is positioned in the negative pressure cylinder cavity and is in sliding fit with the negative pressure cylinder cavity, and the external threaded column is in threaded fit with the internal threaded part; a push rod is fixed on the external thread column. The utility model mainly aims at carrying out negative pressure drainage on common subcutaneous effusion, enables the negative pressure barrel cavity to generate a negative pressure environment through piston head piston movement, realizes the positioning effect of the negative pressure position of the piston head through the thread matching and positioning of the external thread column and the internal thread part, greatly facilitates the temporary or short-time negative pressure drainage operation of nursing personnel, reduces the drainage nursing difficulty, and can be repeatedly assembled for carrying out the effusion negative pressure drainage.

Description

Medical drainage appliance for subcutaneous effusion negative pressure drainage

Technical Field

The utility model relates to a medical negative pressure drainage device, in particular to a medical drainage device for negative pressure drainage of subcutaneous effusion.

Background

In medical applications, such as abdominal surgery and the like, a fluid accumulation of tissue is likely to occur under the skin of an incision, and drainage is required to prevent infection, even to affect the therapeutic effect or cause serious complications. For example, in a ventricular operation, the wall of the cerebral drainage tube is generally sealed in a plurality of holes cut at temporary intervals, then buried under the skin and fixed, and then the effusion is led out through an external drainage tube. Can adopt the negative pressure mode to carry out the drainage to subcutaneous hydrops drainage, in the medical field, general negative pressure equipment of bleeding certainly does not adapt (because cause the tissue damage easily), in hospital's practice, most doctor or nursing staff often operate more troublesome, each hospital's negative pressure drainage mode is also different, generally speaking, nursing staff often adopts the injection tube to provide the vacuum (the relative simple and easy or short time drainage of common use), but the injection tube need keep the negative pressure position for a long time (adopt end cap or checkpost to come the card to fix a position the negative pressure position sometimes) and just can provide stable negative pressure environment, hydrops in the injection tube also easily flows backwards otherwise, this has brought very big difficulty for nursing staff's practical operation, negative pressure drainage effect is also not obvious.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model aims to provide a medical drainage device for subcutaneous effusion negative pressure drainage, a piston head piston moves to enable a negative pressure barrel cavity to generate a negative pressure environment, the positioning function of the negative pressure position of the piston head is realized by matching and positioning an external thread column and an internal thread part through threads, and the negative pressure barrel cavity of a negative pressure drainage barrel can generate a continuous and stable negative pressure environment for effusion negative pressure drainage without nursing additional treatment or external force action, and meanwhile, effusion backflow is not worried; after a period of time or after a certain amount of fluid is collected, the catheter and the negative pressure drainage tube barrel can be disassembled, accumulated fluid collected by the negative pressure drainage tube barrel can be cleaned, and the negative pressure drainage tube barrel can be reassembled for drainage operation.

The purpose of the utility model is realized by the following technical scheme:

a medical drainage appliance for subcutaneous effusion negative pressure drainage comprises a negative pressure drainage tube barrel, a piston assembly and a push rod, wherein a negative pressure tube cavity is arranged in the negative pressure drainage tube barrel, a connecting pipe communicated with the negative pressure tube cavity is arranged at the top end of the negative pressure drainage tube barrel, and an internal thread part positioned in the negative pressure tube cavity is arranged at one end of the negative pressure drainage tube barrel, which is far away from the connecting pipe; the piston assembly comprises a piston head and an external threaded column fixedly connected with the piston head, the piston head is positioned in the negative pressure cylinder cavity and is in sliding fit with the negative pressure cylinder cavity, and the external threaded column is in threaded fit with the internal threaded part; and a push rod is fixed on the external thread column.

In order to better realize the utility model, the connecting pipe is detachably and hermetically connected with the guide pipe.

Preferably, a step end seat is fixed on the outer portion of one end, far away from the connecting pipe, of the negative pressure drainage pipe barrel.

Preferably, the externally threaded post outer diameter is less than the piston head outer diameter.

Preferably, the negative pressure drainage tube barrel is partially conical in shape at one side close to the connecting tube, and the piston head is matched with a conical part.

Preferably, the end part of the conduit is in sealed splicing communication or threaded connection communication with the connecting pipe.

Preferably, the water suction end part of the catheter is provided with a plurality of drainage holes.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) according to the utility model, the piston head piston moves and the negative pressure cylinder cavity generates a negative pressure environment, the positioning effect of the negative pressure position of the piston head is realized by the thread matching and positioning of the external thread column and the internal thread part, and the negative pressure cylinder cavity of the negative pressure drainage cylinder can generate a continuous and stable negative pressure environment for negative pressure drainage of accumulated liquid without nursing extra treatment or external force action, and meanwhile, the backflow of the accumulated liquid is avoided; after a period of time or after a certain amount of fluid is collected, the catheter and the negative pressure drainage tube barrel can be disassembled, accumulated fluid collected by the negative pressure drainage tube barrel can be cleaned, and the negative pressure drainage tube barrel can be reassembled for drainage operation.

(2) The utility model mainly aims at carrying out negative pressure drainage on general subcutaneous effusion, has the advantages of compact and practical structure, convenient operation and relatively low cost, greatly facilitates the temporary or short-time negative pressure drainage operation of nursing personnel, reduces the drainage nursing difficulty, and can be repeatedly assembled for carrying out the negative pressure drainage of the effusion.

Drawings

FIG. 1 is a schematic structural view of the negative pressure drainage tube barrel and the piston assembly after being separated;

fig. 2 is a schematic diagram of the practical state of the present invention.

Wherein, the names corresponding to the reference numbers in the drawings are:

1-negative pressure drainage tube barrel, 11-negative pressure tube barrel cavity, 12-internal thread part, 2-step end seat, 3-connecting tube, 4-piston component, 41-piston head, 42-external thread column, 5-push rod, 6-catheter and 61-drainage hole.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

examples

As shown in fig. 1 to 2, a medical drainage device for negative pressure drainage of subcutaneous effusion comprises a negative pressure drainage tube 1, a piston assembly 4 and a push rod 5, wherein a negative pressure tube cavity 11 (the negative pressure drainage tube 1 of the embodiment is made of transparent material) is arranged in the negative pressure drainage tube 1, and a connecting pipe 3 communicated with the negative pressure tube cavity 11 is arranged at the top end of the negative pressure drainage tube 1. An internal thread part 12 positioned in the negative pressure barrel cavity 11 is arranged at one end of the negative pressure drainage barrel 1 far away from the connecting pipe 3 (referring to fig. 1, the internal thread part 12 is an internal thread section arranged on the inner wall of the negative pressure drainage barrel 1, the aperture of the internal thread part 12 is slightly smaller than that of the negative pressure barrel cavity 11, the aperture of the internal thread part 12 can be slightly equal to that of the negative pressure barrel cavity 11, when the drainage barrel 1 is manufactured, the hole wall except the internal thread part 12 is thicker, an internal thread section is manufactured on the drainage barrel 1 at the position corresponding to the internal thread part 12, and the thickness of the internal thread part 12 is relatively thinner). The piston assembly 4 comprises a piston head 41 and an external threaded column 42 fixedly connected with the piston head 41 (preferably, the external diameter of the external threaded column 42 is slightly smaller than the external diameter of the piston head 41, and the external diameter of the external threaded column 42 is just in threaded fit with the inner hole of the internal threaded part 12), the piston head 41 is positioned in the negative pressure cylinder cavity 11 for sliding fit, and the external threaded column 42 is in threaded fit with the internal threaded part 12. The push rod 5 is fixed on the external thread column 42, and referring to fig. 2, the central axis of the push rod 5, the central axis of the external thread column 42 and the central axis of the piston head 41 are overlapped.

As shown in fig. 2, the connecting tube 3 is detachably connected with the guide tube 6 in a sealing manner; the water absorbing end part of the catheter 6 is provided with a plurality of drainage holes 61, when in use, the water absorbing end of the catheter 6 is arranged at the subcutaneous effusion part of the human body (which can be fixed or disinfected and sealed by gauze and the like), and the effusion enters the catheter 6 through each drainage hole 61 and then flows into the negative pressure barrel cavity 11 of the negative pressure drainage barrel 1 under the negative pressure action of the negative pressure drainage barrel 1.

As shown in fig. 1 and 2, a step end seat 2 is fixed outside one end of the negative pressure drainage tube barrel 1 far away from the connecting tube 3, and the step end seat 2 can facilitate the operation of nursing staff.

According to a preferred embodiment of the utility model, the negative pressure drainage tube 1 is tapered in the negative pressure chamber 11 on the side close to the connection tube 3 and the piston head 41 is fitted with a taper.

According to a preferred embodiment of the utility model, the end of the conduit 6 is in sealed bayonet or screw-threaded communication with the connecting tube 3.

The push rod 5 and the piston assembly 4 are integrated, during production or assembly, the piston assembly 4 is assembled in the negative pressure cylinder cavity 11 (the piston head 41 of the piston assembly 4 passes through the aperture of the internal thread part 12, and the external thread column 42 of the piston assembly 4 moves in a thread fit manner and falls into the negative pressure cylinder cavity 11), and then the push rod 5 is pushed and the piston assembly 4 is pushed to move to the bottom of the negative pressure cylinder cavity 11 (the bottom of the negative pressure cylinder cavity 11 is one end close to the connecting pipe 3). When the device is used, the water absorption end of the conduit 6 is arranged at the subcutaneous effusion of a human body, the conduit 6 is correspondingly and hermetically inserted with the connecting pipe 3, the push rod 5 is pulled and the piston assembly 4 is driven to move outwards (namely, the piston assembly moves away from the bottom of the negative pressure cylinder cavity 11), the piston head 41 of the piston assembly 4 moves in a piston manner and generates a negative pressure environment in the negative pressure cylinder cavity 11 until the external threaded column 42 of the piston assembly 4 is in threaded fit with the internal threaded part 12 for positioning; during manufacturing, the length of the internal thread part 12, the length of the negative pressure cylinder cavity 11 excluding the internal thread part 12, and the relative proportion of the two parts can be designed according to actual requirements, so as to obtain a series of products with different drainage negative pressure environments, for example, the internal thread part 12 occupies one third of the length of the negative pressure drainage cylinder 1 in this embodiment. Because piston head 41 piston motion produces the negative pressure environment in negative pressure cylinder chamber 11, external screw thread post 42 also fixes a position with internal thread portion 12 screw-thread fit simultaneously, do not need nursing extra treatment or exogenic action under, negative pressure cylinder chamber 11 of negative pressure drainage cylinder 1 will produce the negative pressure environment that lasts stable for hydrops negative pressure drainage, can not worry the hydrops backward flow simultaneously, after a period or collect a certain amount, can dismantle pipe 6 and negative pressure drainage cylinder 1, and clear up the hydrops that negative pressure drainage cylinder 1 collected, if need can also install and continuously carry out the negative pressure drainage and collect the hydrops.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a medical drainage utensil that is used for subcutaneous hydrops negative pressure drainage which characterized in that: the negative pressure drainage tube comprises a negative pressure drainage tube barrel (1), a piston assembly (4) and a push rod (5), wherein a negative pressure tube cavity (11) is formed in the negative pressure drainage tube barrel (1), a connecting tube (3) communicated with the negative pressure tube cavity (11) is arranged at the top end of the negative pressure drainage tube barrel (1), and an internal thread part (12) located in the negative pressure tube cavity (11) is arranged at one end, far away from the connecting tube (3), of the negative pressure drainage tube barrel (1); the piston assembly (4) comprises a piston head (41) and an external threaded column (42) fixedly connected with the piston head (41), the piston head (41) is positioned in the negative pressure cylinder cavity (11) in sliding fit, and the external threaded column (42) is in threaded fit with the internal threaded part (12); and a push rod (5) is fixed on the external thread column (42).

2. The medical drainage device for the negative pressure drainage of subcutaneous fluid according to claim 1, wherein: the connecting pipe (3) is detachably connected with a guide pipe (6) in a sealing way.

3. The medical drainage device for the negative pressure drainage of subcutaneous fluid according to claim 1, wherein: the outside of one end of the negative pressure drainage tube barrel (1) far away from the connecting pipe (3) is fixed with a step end seat (2).

4. The medical drainage device for the negative pressure drainage of subcutaneous fluid according to claim 1, wherein: the outer diameter of the external thread column (42) is smaller than that of the piston head (41).

5. The medical drainage device for the negative pressure drainage of subcutaneous fluid according to claim 1, wherein: the negative pressure drainage tube barrel (1) is provided with a conical part at the negative pressure tube cavity (11) close to one side of the connecting tube (3) in a matching way, and the piston head (41) is provided with a conical part.

6. The medical drainage device for the negative pressure drainage of subcutaneous fluid according to claim 2, wherein: the end part of the conduit (6) is in sealed splicing communication or threaded connection communication with the connecting pipe (3).

7. The medical drainage device for the negative pressure drainage of subcutaneous fluid according to claim 2, wherein: the water absorbing end part of the conduit (6) is provided with a plurality of drainage holes (61).