CN209645509U - Disposable negative pressure drainage device - Google Patents

Abstract

This application involves a kind of disposable negative pressure drainage device, including guid needle, drainage tube and connector for connecting guid needle and drainage tube, the cavity through two tip sides is equipped with inside the connector；It is detachably connected between the guid needle and connector, it is fixedly connected between the drainage tube and connector, the utility model has increased a connector newly on the basis of existing design to connect guid needle and drainage tube, it is directly connected to instead of guid needle and drainage tube, and take effective structure and ensure that the fastness of connection, it avoids guid needle and what when drainage tube is directly connected to may cause is not connected firmly the case where poking drainage tube with guid needle.

Description

Disposable negative pressure drainage device

Technical field

The utility model relates to medical instruments field, especially a kind of disposable negative pressure drainage device.

Background technique

Surgical drainage is for lodging in interior, intra-articular, organ or tissue the liquid of body cavity (including blood, fester, inflammatory Sepage, bile, juice) it deflects from original place and excretes, to prevent from accumulating in body cavity or operating field, secondary pressure symptom, Infection or histologic lesion.Negative pressure drainage is a branch of surgical drainage, is mainly characterized by and is inhaled using drainage device and negative pressure Leading-in device connection, it is indirect to obtain or constantly generate subatmospheric pressure at the surface of a wound, promoted by a series of mechanism of action Into the treatment method of wound healing.

Existing drainage device is divided into two-part structure, is divided into Drainage Section and attracts section, when use buries leading portion Drainage Section Enter affected part, section is attracted to carry out negative pressure drainage.Drainage device on existing market is broadly divided into two ways, and one is guiding needle guards Enter in silica gel tube cavity, the connection of guid needle and drainage tube is fastened by the inside contraction elasticity of silicone tube, but due to silicon Sebific duct internal diameter and guid needle base engagement tolerance are not easy to control, both cause connection size indefinite, in particular with using the time Lengthening, the inside contraction elasticity of silicone tube reduces；Or in use, tissue or tissue fluid are diffused into silica gel Pipe makes frictional force between the two become smaller with the connection gap of guid needle pedestal；The two is ultimately caused to fall off.Second is to lead Draw pin and drainage tube are bonded together by glue；Glue bonding method is solid and reliable, but has non-dismountable property, cannot basis Need the guid needle with changing different model.And guid needle is usually constructed with a more sharp head, and which has Guid needle punctures the risk of drainage tube during the installation process, and entire drainage system is caused to be unable to operate normally.

Utility model content

In order to overcome the shortcomings of existing negative pressure drainage device, the utility model provide it is a kind of it is simple and reliable for structure, can match The disposable negative pressure drainage device of different model guid needle.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

Disposable negative pressure drainage device, including guid needle, drainage tube and company for connecting guid needle and drainage tube Fitting, the connector inside are equipped with the cavity through two tip sides；It is detachably connected between the guid needle and connector, It is fixedly connected between the drainage tube and connector.

Preferably, being detachably connected using threaded connection between the guid needle and connector.

Preferably, the tail portion of the guid needle is equipped with a hollow cylindrical mounting post, the periphery of the mounting post Equipped with external screw thread, the side of the connector is equipped with the internal screw thread with mounting post Matching installation.

Preferably, being fixedly connected between the drainage tube and connector is connected using glue.

Preferably, the side of the connector is equipped with a hollow cylindrical plug, the plug and drainage tube With installation.

Preferably, the connector is the smooth cylinder in surface, the guid needle, connector and drainage pipe outside diameter one It causes.

Preferably, the guid needle includes the bending part of syringe needle, tail portion and connecting needle and tail portion, and the bending part can appoint Meaning bends and keeps bending angle.

Preferably, the drainage tube is equipped with developing line.

Preferably, the connecting piece material is medical grade plastic.

The beneficial effects of the utility model are: the utility model has increased a connector newly on the basis of existing design Guid needle and drainage tube are connected, is directly connected to instead of guid needle and drainage tube, and take effective structure and ensure that connection Fastness, avoid guid needle and when drainage tube is directly connected to may cause is not connected firmly and pokes drainage tube with guid needle The case where.

Detailed description of the invention

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

Fig. 1 is the overall structure diagram of the utility model embodiment；

Fig. 2 is the structural schematic diagram of guid needle in the utility model embodiment；

Fig. 3 is the structural schematic diagram of connector in the utility model embodiment；

Fig. 4 is the structural schematic diagram of drainage tube in the utility model embodiment；

Fig. 5 be in Fig. 4 A-A to sectional view；

In figure, 1- guid needle, 2- drainage tube, 3- connector, 4- mounting post, 5- plug, 101- syringe needle, 102- bending part, The tail portion 103-, 6- developing line, the bottom surface 7-.

Specific embodiment

Referring to attached drawing 1-5, the disposable negative pressure drainage device of the utility model embodiment, including guid needle 1, drainage Pipe 2 and connector 3 for connecting guid needle 1 and drainage tube 2 are equipped with the sky through two tip sides inside the connector 3 Chamber；It is detachably connected between the guid needle 1 and connector 3, is fixedly connected between the drainage tube 2 and connector 3.

The common material of guid needle 1 on existing market is stainless steel, and the common material of drainage tube 2 is medical grade silicon rubber, As mentioned in the background, if the two is directly connected to, there is the hidden danger for being not connected firmly and damaging drainage tube 2, therefore be arranged one A connector 3 is for connecting guid needle 1 and drainage tube 2.It is equipped with cavity inside connector 3 and is connected to two tip sides, guarantees to draw Logical circulation road.In actual operation, the affected part that guid needle 1 is embedded to human body is generally required, because affected part is different and needs to absorb Tissue fluid is different, and guid needle 1 is possible to have the influence of the multi-panels factor such as different inner diameters or different length and possess multiple types Number, it is detachably connected preferably between guid needle 1 and connector 3, to enhance the suitability of connector 3.And drainage tube 2 is multi-purpose In vitro with generate negative pressure device connect, effect be extraction tissue fluid, shape size do not need it is changeable, Gu drainage tube It uses and is fixedly connected between 2 and connector 3.

It is optimal in structure, being detachably connected using threaded connection between the guid needle 1 and connector 3.Screw thread connects It connects in addition to there is good fastening effect, has both good leakproofness, have the characteristics that simple and reliable, be suitble to large batch of industrialization Production.

Above-mentioned threaded connection with flowering structure by being realized: the tail portion 103 of the guid needle 1 is equipped with a hollow cylinder The mounting post 4 of shape, the periphery of the mounting post 4 are equipped with external screw thread, and the side of the connector 3, which is equipped with, matches peace with mounting post 4 The internal screw thread of dress.In the present embodiment, 1 tail portion 103 of guid needle includes bottom surface 7, and bottom surface 7 is equipped with the mounting post 4 of protrusion, installation Column 4 is hollow cylindrical, internal to be connected with the inner cavity of guid needle 1；The periphery of mounting post 4 is equipped with external screw thread, on connector 3 Internal screw thread is set in the cavity of connector 3, and mounting post 4 screws in cavity until bottom surface 7 is abutted against with connector 3.

Preferably, being fixedly connected between the drainage tube 2 and connector 3 is connected using glue, the specification of drainage tube 2 compared with To be single, connected between drainage tube 2 and connector 3 using glue.Glue connection is also a kind of commonly used method in this field, With simple and reliable, the strong feature of leakproofness.

Optimal in structure, the side of the connector 3 is equipped with a hollow cylindrical plug 5, the plug 5 with 2 Matching installation of drainage tube.In the present embodiment, the internal diameter of plug 5 is consistent with the internal diameter of drainage tube 2, plug 5 and drainage tube 2 it Between be coated with glue.It is equipped with plug 5 herein, is mainly used for increasing glue coated area, increases fastness.

Preferably, the connector 3 is the smooth cylinder in surface, 2 outer diameter of the guid needle 1, connector 3 and drainage tube Unanimously.Because of drainage device, needed sometimes by a part intrusion intracorporal affected part of people of drainage device, if three sections of outer diameter It is inconsistent, step must be will form, have the hidden danger for causing tissue damage during entering human body.

Preferably, the guid needle 1 includes the bending part of syringe needle 101, tail portion 103 and connecting needle 101 and tail portion 103 102, the bending part 102 can arbitrarily bend and keep bending angle.In actual medical care precess, need to guide sometimes 1 syringe needle 101 of needle protrudes into affected part at an angle, and the utility model provides a kind of structure at this time, under the effect of external force, leads The bending part 102 of draw pin 1 can be bent over, and revocation external force is enough, and bending part 102 still can keep the shape after bending, thus Change the direction of syringe needle 101.

Preferably, the drainage tube 2 is equipped with developing line 6.Minimally Invasive Surgery is especially in some operations to need with X-ray to operation Position carries out the positioning of multi-angle, and the developing line 6 of development is equipped in drainage tube 2, and doctor can be helped to irradiate in analysis x-ray and tied When fruit, the influence that drainage tube 2 may cause is excluded, setting developing line 6 is at low cost, securely and reliably.Further, developing line 6 can Think continuously be also possible to it is intermittent.Developing line 6 can be located inside the material of drainage tube 2, also may be provided at drainage tube 2 On lateral surface.

Optimal in structure, 3 material of connector is medical grade plastic.The textured softer plasticity of plastic material is stronger Feature is adapted to connect with other components of unlike material.As in the present embodiment, guid needle 1 is metal material, plasticity It is smaller, when the connector 3 being attached thereto is plastic material, the better tightness of threaded connection between the two can be made.Even The drainage tube 2 that 3 other side of fitting is connected by glue, drainage tube 2 are usually silica gel material, and quality is softer, if connector 3 selects Just there is connector 3 to damage the risk of drainage tube 2 in connection with the big material of rigidity, and the connector 3 of plastic material can To evade the risk.

More than, only the preferred embodiment of the utility model, the utility model are not limited to above embodiment, As long as its technical effect for reaching the utility model with identical means, all should belong to the protection scope of the utility model.

Claims (8)

1. disposable negative pressure drainage device, it is characterised in that: including guid needle, drainage tube and for connecting guid needle and drawing The connector of flow tube, the connector inside are equipped with the cavity through two tip sides；It can between the guid needle and connector Dismantling connection is fixedly connected between the drainage tube and connector, and the guid needle includes syringe needle, tail portion and connecting needle and tail The bending part in portion, the bending part can arbitrarily bend and keep bending angle.

2. disposable negative pressure drainage device according to claim 1, it is characterised in that: the guid needle and connector Between be detachably connected using be threadedly coupled.

3. disposable negative pressure drainage device according to claim 2, it is characterised in that: the tail portion of the guid needle is set Have a hollow cylindrical mounting post, the periphery of the mounting post is equipped with external screw thread, the side of the connector be equipped with The internal screw thread of mounting post Matching installation.

4. disposable negative pressure drainage device according to claim 1, it is characterised in that: the drainage tube and connector Between be fixedly connected and connected using glue.

5. disposable negative pressure drainage device according to claim 4, it is characterised in that: the side of the connector is equipped with One hollow cylindrical plug, the plug and drainage tube Matching installation.

6. disposable negative pressure drainage device according to claim 1, it is characterised in that: the connector is surface light Sliding cylinder, the guid needle, connector are consistent with drainage pipe outside diameter.

7. disposable negative pressure drainage device according to claim 1, it is characterised in that: the drainage tube is equipped with development Line.

8. disposable negative pressure drainage device according to claim 1, it is characterised in that: the connecting piece material is doctor With grade plastics.