Closed drainage puncture device for thoracic cavity

Abstract

The utility model discloses a thoracic cavity closed drainage puncture device which comprises a puncture inner core, a chest wall indwelling tube and a pleural cavity imbedding detection mechanism, the pleural cavity imbedding detection mechanism comprises a hollow tube cavity arranged in the tube wall of the chest wall indwelling tube, and the lower end of the hollow tube cavity is communicated with an air exhaust through hole. And the upper end of the hollow pipe cavity is communicated with an air and liquid extraction pipe. Whether the chest wall indwelling tube is inserted into the pleural cavity or not, namely whether the chest wall indwelling tube is in place or not, is judged in an auxiliary mode according to the suction condition of the injector barrel arranged in the pleural cavity detection mechanism on gas or liquid in the pleural cavity, for example, if the injector barrel cannot conduct suction, it shows that the chest wall indwelling tube is not inserted into the pleural cavity yet, and if not, the chest wall indwelling tube is not inserted into the pleural cavity, and the chest wall indwelling tube is not inserted into the pleural cavity. If the syringe tube sucks liquid or gas, the chest wall indwelling tube is inserted into the pleural cavity, and the operation is simple and convenient. And the depth of the drainage tube inserted into the tissue can be visually judged according to the scale values on the chest wall indwelling tube, so that the probability that the drainage tube enters the chest wall subcutaneous skin by mistake is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a closed chest drainage puncture device. Background Art

[0002] Closed chest drainage refers to inserting one end of the drainage tube into the chest cavity and connecting the other end to a relatively low water seal bottle. The purpose is to drain the fluid or gas in the chest cavity, restore the negative pressure in the pleural cavity, and promote the recovery of lung function. Closed chest drainage puncture usually uses a puncture core to pass the chest wall tube through the pleural wall layer and insert it into the pleural cavity. The drainage tube is then accurately placed into the pleural cavity through the chest wall tube. The chest wall tube is then withdrawn, leaving only the soft drainage tube in the pleural cavity to continue draining the hydropneumothorax. However, during the puncture of the puncture core and the chest wall tube, it is a blind operation. The depth of insertion of the chest wall tube and whether it is inserted in place (inserted into the pleural cavity) depends on the doctor's surgical experience. The current thoracentesis device does not take into account the structure that can assist in judging the insertion position of the chest wall indwelling tube. Therefore, it is necessary to improve the existing device and provide a closed chest drainage puncture device that can assist in judging the insertion depth of the chest wall indwelling tube and whether it is in place. Utility Model Content

[0003] Therefore, based on the above background, the utility model provides a closed chest drainage puncture device, which can intuitively judge the insertion depth of the chest wall indwelling tube through the scale value located on the chest wall indwelling tube, and can simply and conveniently judge whether the chest wall indwelling tube and the puncture inner core have punctured into the pleural cavity through the detection of the inserted pleural cavity detection mechanism, so as to realize auxiliary judgment of whether the chest wall indwelling tube is inserted in place.

[0004] The technical solution provided by the utility model is:

[0005] A closed chest drainage puncture device, comprising:

[0006] The puncture core comprises a sharp portion and a rod portion, wherein the sharp portion is pointed so as to be able to puncture tissue;

[0007] A chest wall indwelling tube, which is hollow and is fitted over the puncture inner core;

[0008] The pleural cavity detection mechanism is inserted, comprising a tube cavity arranged in the tube wall of a chest wall indwelling tube, the lower end of the tube cavity is connected to an air extraction hole, the upper end of the tube cavity is connected to a connecting tube, and the end of the connecting tube away from the chest wall indwelling tube is cooperatively connected to a syringe barrel.

[0009] The pleural cavity insertion detection mechanism determines whether the chest wall indwelling tube and the puncture inner core have punctured into the pleural cavity by monitoring the suction condition of the gas or liquid in the pleural cavity by the syringe barrel.

[0010] Furthermore, a locking groove is provided on the top of the chest wall indwelling tube, and a locking protrusion that cooperates with the locking groove is provided on the outer wall of the puncture inner core.

[0011] Furthermore, scale values ​​are provided on the outer wall of the chest wall indwelling tube.

[0012] Furthermore, the inner diameter of the chest wall indwelling tube is 5 mm, and the thickness of the tube wall is 1.4 mm.

[0013] Furthermore, the length of the hollow lumen is 8 cm, and the distance between the air extraction hole and the bottom surface of the chest wall indwelling tube is 3 mm.

[0014] Furthermore, the length of the puncture inner core is greater than the length of the chest wall indwelling tube;

[0015] The outer diameter of the puncture inner core is 5 mm and the total length is 14 cm.

[0016] Furthermore, the puncture inner core and the chest wall indwelling tube are both made of plastic material.

[0017] Furthermore, the puncture inner core or chest wall indwelling tube can be made of polypropylene, polyolefin or polyethylene.

[0018] The above technical solution has the following beneficial effects:

[0019] ① The utility model assists in judging whether a chest wall tube has been inserted into the pleural cavity, i.e., whether the chest wall tube is in place, based on the suction condition of the gas or liquid in the pleural cavity by the syringe barrel inserted into the pleural cavity detection mechanism. For example, if the syringe barrel cannot suction, it means that the chest wall tube has not been inserted into the pleural cavity; if the syringe barrel suctions liquid or gas, it means that the chest wall tube has been inserted into the pleural cavity. The operation is simple and convenient.

[0020] ② The utility model can visually judge the insertion depth of the chest wall indwelling tube through the scale value on the chest wall, so as to reduce the probability of the drainage tube mistakenly entering the subcutaneous part of the chest wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 The structure of the utility model is shown in FIG. Figure 3 ;

[0025] Figure 4 The perspective structure of the chest wall indwelling tube of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 5 The perspective structure of the chest wall indwelling tube of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 6 The structure of the utility model is shown in FIG. Figure 4 ;

[0028] Figure 7 It is a structural schematic diagram of the drainage tube of the utility model;

[0029] Figure 8 This is a reference diagram of the use status of the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0033] The utility model is further described below in conjunction with the accompanying drawings.

[0034] The following embodiments involve upper and lower positions. Figure 1 The orientation shown.

[0035] Example 1: Reference Figures 1 to 8 A chest closed drainage puncture device is shown, comprising:

[0036] The puncture core 2 includes a sharp portion 21 and a rod 22, wherein the sharp portion is pointed and can puncture tissue; the chest wall indwelling tube 1 is hollow and is fitted over the puncture core 2; the pleural cavity detection mechanism includes a lumen 12 provided in the tube wall of the chest wall indwelling tube 1, wherein the lower end of the lumen 12 is connected to a suction hole 13, and the upper end of the lumen 12 is connected to a connecting tube 3, wherein the end of the connecting tube 3 away from the chest wall indwelling tube 1 is fitted with a syringe barrel 4. Figure 6 As shown, a piston is provided in the syringe barrel 4.

[0037] The pleural cavity insertion detection mechanism determines whether the chest wall indwelling tube 1 and the puncture inner core 2 have punctured the pleural cavity by aspirating the gas or liquid in the pleural cavity through the syringe barrel 4. More specifically, during the puncture process, when the syringe barrel is used for aspiration (pulling the piston outward), if aspiration cannot be performed, it means that the chest wall indwelling tube has not been inserted into the pleural cavity; if the syringe barrel aspirates liquid or gas, it means that the chest wall indwelling tube is inserted into the pleural cavity, and the operation is simple and convenient.

[0038] The top of the chest wall indwelling tube 1 is provided with a card groove 11, and the outer wall of the puncture inner core 2 is provided with a card protrusion 23 that cooperates with the card groove 11. Through the cooperation between the card groove 11 and the card protrusion 23, after the puncture inner core 2 punctures the tissue, force is applied to drive the chest wall indwelling tube to be inserted into the tissue until Figure 8 As shown, after the chest wall indwelling tube passes through the chest wall layer 7, it is inserted into the pleural cavity 8. After the chest wall indwelling tube is inserted into place, the suction through hole 13 is located in the pleural cavity 8.

[0039] The end of the connecting tube 3 away from the chest wall indwelling 1 is provided with a joint 31, and the joint 31 is matched and connected with the nipple of the syringe barrel 4. The matching connection is a sleeve connection or a screw connection, and the joint 31 is a hollow cylinder connected with the air and liquid extraction tube 3;

[0040] In one embodiment, the connection is sleeve connection, the connector can be made of a deformable rubber material, and the inner cavity of the connector is interference fit with the nipple of the syringe barrel 4 to improve the air tightness of the connection. The connector is integrally formed with the connecting tube 3.

[0041] There may also be other embodiments, in which the connection method is a screw connection, the outer wall of the nipple of the syringe barrel 4 is provided with an external thread, the inner wall of the connector 31 is provided with an internal thread that matches the external thread, the connector thread is screwed onto the nipple for a sealed connection, the connector can be made of plastic or hard rubber, and the connector is fixed to the connecting tube 3 by hot welding.

[0042] The specific principle of detection by inserting the pleural cavity detection mechanism in this embodiment is as follows:

[0043] The utility model is based on the fact that the gas or liquid in the pleural cavity can be sucked out only after the suction hole 13 enters the pleural cavity, that is, during the puncture process, when the syringe barrel is used for suction (the piston is gently pulled outward), if suction cannot be performed (the piston cannot be pulled), it means that the chest wall indwelling tube has not been inserted into the pleural cavity; if the syringe barrel can suck gas or liquid, it means that the chest wall indwelling tube is inserted into the pleural cavity.

[0044] Specific as Figure 3 As shown, the outer wall of the chest wall indwelling tube 1 is provided with scale values, and the depth of the chest wall indwelling tube 1 inserted into the tissue as the puncture inner core is inserted can be intuitively judged by the scale values.

[0045] The inner diameter of the chest wall indwelling tube 1 is 5 mm, and the thickness of the tube wall is 1.4 mm. The length of the tube cavity 12 is 8 cm, and the distance between the exhaust hole 13 and the bottom surface of the chest wall indwelling tube 1 is 3 mm. The maximum outer diameter of the chest wall indwelling tube 1 in this embodiment is 7.8 mm, and the puncture damage is small. The outer diameter of the puncture inner core 2 is 5 mm, and the total length is 14 cm. In this embodiment, the chest closed drainage puncture device also includes Figure 7 The drainage tube 5 shown has a drainage hole 51 at the lower end thereof. The length of the drainage tube is 40 cm and the outer diameter thereof is 5 mm.

[0046] The reasonable arrangement of the position of the air extraction through hole 13 of the utility model can make the drainage tube 5 pass smoothly through the chest wall indwelling tube 1 and be accurately placed in the pleural cavity, avoiding the drainage tube from mistakenly entering the pleural cavity or being placed under the chest wall skin.

[0047] The puncture inner core 2 or the chest wall indwelling tube 1 can be made of polypropylene, polyolefin or polyethylene. The puncture inner core and the chest wall indwelling tube are made of plastic material, which will reduce the manufacturing cost of the device. Preferably, the utility model can be used as a disposable puncture device.

[0048] When the utility model is used in practice, one end of the drainage tube 5 is connected to a drainage bottle (water seal bottle) (which is a conventional technology and not shown), and the puncture inner core 2 is sleeved in the chest wall indwelling tube 1 until the card protrusion 23 is correspondingly engaged with the card groove 11. The puncture inner core 2 pierces the human tissue and inserts the chest wall indwelling tube 1 into the pleural cavity. During this process, the syringe barrel is pulled outward and the syringe barrel is operated to suction (before puncturing, it is preferred to push the syringe barrel to the bottom end) until the syringe barrel sucks the gas or liquid in the pleural cavity, then the puncture inner core 2 is pulled out, and the other end of the drainage tube 5 is inserted into the chest wall indwelling tube 1 until the part with the drainage hole 51 completely enters the pleural cavity, the chest wall indwelling tube 1 is withdrawn, the drainage tube is fixed, and the drainage tube is connected to the sterile water seal bottle.

[0049] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A closed chest drainage puncture device, characterized in that: It includes: The puncture core comprises a sharp portion and a rod portion, wherein the sharp portion is pointed so as to be able to puncture tissue; A chest wall indwelling tube, which is hollow and is fitted over the puncture inner core; The pleural cavity detection mechanism is placed, comprising a tube cavity provided in the tube wall of the chest wall indwelling tube, the lower end of the tube cavity is connected to a suction through hole, the upper end of the tube cavity is connected to a connecting tube, and the end of the connecting tube away from the chest wall indwelling tube is cooperatively connected to a syringe barrel; The pleural cavity insertion detection mechanism determines whether the chest wall indwelling tube and the puncture inner core have punctured into the pleural cavity by monitoring the suction condition of the gas or liquid in the pleural cavity by the syringe barrel.

2. A closed chest drainage puncture device according to claim 1, characterized in that: A clamping groove is arranged on the top of the chest wall indwelling tube, and a clamping protrusion matched with the clamping groove is arranged on the outer wall of the puncture inner core.

3. A closed chest drainage puncture device according to claim 1, characterized in that: The outer wall of the chest wall indwelling tube is provided with scale values.

4. A closed chest drainage puncture device according to claim 1, characterized in that: The inner diameter of the chest wall indwelling tube is 5 mm, and the thickness of the tube wall is 1.4 mm.

5. A closed chest drainage puncture device according to claim 4, characterized in that: The length of the lumen is 8 cm, and the distance between the suction through hole and the bottom surface of the chest wall indwelling tube is 3 mm.

6. A closed chest drainage puncture device according to claim 5, characterized in that: The length of the puncture inner core is greater than the length of the chest wall indwelling tube; The outer diameter of the puncture inner core is 5 mm and the total length is 14 cm.

7. A closed chest drainage puncture device according to any one of claims 1 to 6, characterized in that: The puncture inner core and the chest wall indwelling tube are both made of plastic material.

8. A closed chest drainage puncture device according to claim 7, characterized in that: The puncture inner core or chest wall indwelling tube can be made of polypropylene, polyolefin or polyethylene.

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