Forming die, bronchial component and double-lumen bronchial cannula

Abstract

The utility model provides a forming die, a bronchial part and a double-cavity bronchial cannula, and relates to the technical field of bronchial cannulas, the forming die comprises a rear die core and a front die core, and an inner wall pipe die cavity, a bronchial cavity and a ventilation main pipe placing cavity are formed between the rear die core and the front die core; and an inner wall pipe mold core and a branch pipe mold core are respectively arranged in the inner wall pipe mold cavity and the branch pipe mold cavity. The inner wall tube in the spring is formed through the mold, the forming mode is reliable, it can be guaranteed that the wall thickness is uniform and stable, and the risk that when a bronchial part is twisted clinically, the spring leaks out at the position where a silica gel layer on the inner wall of the spring is thin is avoided; the rubber coating injection molding can ensure that the bonding surface between the bronchial tube component and the ventilation main tube is flat, and the bronchofiberscope can be conveniently placed in.

Description

Technical Field

[0001] The utility model relates to the technical field of bronchial intubation, in particular to a forming die, a bronchial component and a double-lumen bronchial intubation. Background Art

[0002] Given the functional demands of the bronchial components, e.g. Figure 8 As shown, the bronchial component includes a spring. In order to prevent the exposed spring from affecting or damaging the inserted bronchoscope, the spring needs to be immersed in liquid silicone to adhere a layer of silicone to its surface during bronchial molding. The silicone is vulcanized at high temperature before the bronchial component is molded. The silicone layer immersed in liquid silicone is relatively thin, and due to the influence of gravity, the wall thickness of the rubber coating is uneven. When the silicone double-lumen bronchial tube is used, the bronchial component is subject to airway resistance or needs to be twisted. The thin silicone wall on the surface of the spring is easy to rupture, causing the spring to leak out, and the bronchoscope is blocked or damaged when it is inserted into the tube. If the spring is immersed in liquid silicone multiple times to increase the thickness, the manufacturing cost will increase and the production efficiency will decrease.

[0003] The bronchial component and the ventilation main tube are bonded with silicone glue. The manual bonding process is cumbersome and inefficient. After bonding with glue, there is excess glue on the bonding surface between the inner wall of the ventilation main tube and the bronchial component, which cannot be completely cleaned and leveled, forming steps, which is affected when the fiberoptic bronchoscope is inserted. To address the above defects, a double-lumen bronchial tube bronchial component molding mold is proposed. Utility Model Content

[0004] The utility model aims to provide a molding die, a bronchial component and a double-lumen bronchial cannula, which solve the problems of easy rupture of the thin silicone wall on the surface of the spring and glue residue on the bonding surface between the bronchial component and the ventilation main pipe caused by the current bronchial component manufacturing method.

[0005] In order to solve the above problems, the utility model provides a molding mold, including a rear mold core and a front mold core, an inner wall tube mold cavity, a bronchial cavity and a ventilation main pipe placement cavity are formed between the rear mold core and the front mold core, and the inner wall tube mold cavity and the bronchial cavity are respectively provided with an inner wall tube core and a bronchial core. The inner wall tube mold cavity is used to mold the inner wall tube, and then a spring is installed on the inner wall tube. The inner wall tube with the spring installed is placed in the bronchial cavity and connected to one of the holes of the ventilation main pipe. The molding mold also includes a bronchial sealing insert for sealing the other hole of the ventilation main pipe. After sealing, a bronchial component is molded.

[0006] According to an embodiment of the utility model, the molding die further comprises an inner wall tube core base, and the inner wall tube core is connected to the inner wall tube core base.

[0007] According to an embodiment of the utility model, the molding mold further includes a bronchial core base, and the bronchial core is connected to the bronchial core base.

[0008] According to an embodiment of the utility model, the inner wall tube core base and the bronchial core base are detachably connected to the inner wall tube core and the bronchial core.

[0009] According to an embodiment of the utility model, a bronchial side hole insert pin is arranged on the bronchial core base, which is used to plug the side hole of the ventilation main pipe when forming the bronchial component.

[0010] According to an embodiment of the utility model, a mold flow channel is provided on the rear mold core, and the mold flow channel connects the inner wall tube mold cavity and the bronchial cavity.

[0011] According to an embodiment of the utility model, two flow channel adjusting screws are installed at the flow channel of the mold.

[0012] A bronchial component is manufactured using the above-mentioned forming mold. The bronchial component comprises an inner wall tube, an outer wall tube and a spring. The outer wall tube and the inner wall tube cover the spring.

[0013] According to an embodiment of the utility model, a connecting portion is provided between the spring and the inner wall tube, and the connecting portion can be selectively glued to maintain the position of the spring on the inner wall tube before the bronchial component is formed.

[0014] A double-lumen endobronchial cannula comprises the above-mentioned bronchial component.

[0015] The beneficial effects of the utility model are that the inner wall tube inside the spring is formed by a mold, and the molding method is reliable and can ensure that the wall thickness is uniform and stable, thereby avoiding the risk of leakage of the spring at the place where the silicone layer on the inner wall of the spring is relatively thin when the clinician twists the bronchial component; the pitch of the spring can be guaranteed to be uniform, thereby avoiding the situation where the spring cannot play the expected supporting role and the bronchial component is bent when the clinician twists the bronchial component due to large pitch differences; the rubber-coated injection molding can ensure that the bonding surface between the bronchial component and the ventilation main pipe is smooth, thereby facilitating the insertion of the fiberoptic bronchoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the rear mold core structure;

[0018] Figure 2 It is a schematic diagram of the front mold structure;

[0019] Figure 3 Schematic diagram of the inner wall tube mold cavity and the inner wall tube core;

[0020] Figure 4 It is a schematic diagram of the inner wall tube when it is formed;

[0021] Figure 5 A schematic diagram of the inner wall tube after the spring is inserted and installed on the bronchial core;

[0022] Figure 6 A schematic diagram of a bronchial sealant insert blocking a ventilation main pipe;

[0023] Figure 7 It is a schematic diagram of the structure of bronchial components;

[0024] Figure 8 is a perspective view of the bronchial components;

[0025] Fig. 9 is a schematic diagram of the cross section of the ventilation main pipe;

[0026] Fig.10 It is a schematic diagram of the overall structure of a double-lumen endobronchial tube;

[0027] Fig.11 This is a schematic diagram of the complete mold structure. DETAILED DESCRIPTION

[0028] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0029] A mold component, such as Figure 1 , Figure 2 , comprising a rear mold core 101 and a front mold core 301, wherein an inner wall tube mold cavity 114, a bronchial cavity 115 and a ventilation main pipe placement cavity 116 are formed between the rear mold core 101 and the front mold core 301, and an inner wall tube mold core 104 and a bronchial core 109 are respectively arranged in the inner wall tube mold cavity 114 and the bronchial cavity 115, wherein the inner wall tube mold core 104 is connected to the inner wall tube mold core base 103, and the bronchial core 109 is connected to the bronchial core base 105, preferably, the inner wall tube The core base 103 and the bronchial core base 105 are detachably connected to the inner wall tube core 104 and the bronchial core 109, which is convenient for cutting and the core model can be adjusted according to the requirements of different inner diameters. There are grooves for placing the inner wall tube core base 103 and the bronchial core base 105 on the rear mold core 101 and the front mold core 301. The inner wall tube core base 103 and the bronchial core base 105 adopt different shapes for easy distinction. The ventilation main pipe placement cavity 116 is used to place the ventilation main pipe 4.

[0030] The rear mold core 101 and the front mold core 301 cooperate with the other parts of the mold to form a complete molding mold. Except for the rear mold core 101 and the front mold core 301, the other matching structures of the mold can adopt any solution in the prior art, such as Fig.11 In this embodiment, the mold also includes a positioning ring 313, an upper mold plate 302, an insulation plate 303, a front mold core fixing plate 304, a rear mold core fixing plate 306, an insulation block 308, a square iron 309, a lower mold plate 310, an ejector fixing plate 311, an ejector plate 312 and other structures.

[0031] The inner wall tube 202 is formed using the inner wall tube mold cavity 114, and then the spring 203 is installed on the inner wall tube 202. The inner wall tube 202 installed with the spring 203 is placed in the bronchial cavity 115 and connected to one of the holes of the ventilation main pipe 4. The molding mold also includes a bronchial sealing insert 106, which is used to seal the other hole of the ventilation main pipe. After sealing, the bronchial component is formed.

[0032] Furthermore, a bronchial side hole inserting pin 113 is provided on the bronchial core base 105 for plugging the side hole 43 of the ventilation main pipe 4 when forming the bronchial component.

[0033] like Figure 1 A mold flow channel 111 is arranged on the rear mold core 101, and the mold flow channel 111 connects the inner wall tube mold cavity 114 and the bronchial cavity 115, and flow channel adjustment screws 12 are respectively arranged at the connecting sections with the inner wall tube mold cavity 114 and the bronchial cavity 115.

[0034] Forming steps such as Figure 3-Figure 7 As shown:

[0035] Step 1: Figure 3 , placing the inner wall tube core 104 into the inner wall tube cavity 114 of the mold core;

[0036] Step 2: Figure 4 , the inner wall tube 202 parts are molded by injection silicone, such as Figure 5 , put the spring 203 on the inner wall tube 202, and fix it with silicone glue. The glue forms the connection between the spring 203 and the inner wall tube 202. In other embodiments, the connection may also use a clamping structure, a clamping structure, etc.;

[0037] Step 3: Figure 5 , put the glued spring 203 and the inner wall tube 202 on the bronchial core 109;

[0038] Step 4: Figure 6After assembling step S3, connect it to the ventilation main pipe 4, connect it to the first channel 42 of the ventilation main pipe with the bronchial core 109, connect it to the second channel 41 of the ventilation main pipe with the bronchial sealing insert 106, and block the other side hole 43 of the ventilation main pipe with the bronchial side hole insert needle 113. After completion, put it into the bronchial mold cavity 115.

[0039] Step 5: Inject silicone to mold the bronchial components. Figure 7 As shown, the bronchial component and the ventilation main tube are connected by rubber coating, the bonding surface is smooth, and there is no glue residue problem, which is convenient for the placement of the fiberoptic bronchoscope.

[0040] A bronchial component, such as Figure 8 The bronchial component is made by using the above-mentioned molding mold. The bronchial component includes an inner wall tube 202, an outer wall tube 201 and a spring 203. The outer wall tube 201 and the inner wall tube 202 cover the spring 203. The wall thickness of the inner wall tube 202 covering the spring 203 is uniform and stable, so as to avoid the risk of leakage of the spring at the place where the silicone layer on the inner wall of the spring is relatively thin when the clinician twists the bronchial component; further, a connecting portion is provided between the spring 203 and the inner wall tube 202, i.e., the above-mentioned silicone glue, which is used to maintain the position of the spring 203 on the inner wall tube 202 before the bronchial component is molded, so that the pitch of the molded spring can be guaranteed to be uniform, so as to avoid the large difference in pitch, when the clinician twists the bronchial component, the spring cannot play the expected supporting role, resulting in bending of the bronchial component; the glue injection molding can ensure that the bonding surface between the bronchial component and the ventilation main pipe is flat, which is convenient for the insertion of the fiberoptic bronchoscope.

[0041] A double-lumen endobronchial tube, such as Fig.10 , including the above-mentioned bronchial component 2, also includes a bronchial cuff 1, a tracheal cuff 3, a ventilation main tube 4, a conical joint 5, an indicator airbag 1 (or an indicator airbag 1 joint) 6, an indicator airbag 2 (or an indicator airbag 2 joint) 7, a diamond joint 8, an external tube 1 9 and an external tube 2 10.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.

Claims

1. A molding die, characterized in that: The invention comprises a rear mold core (101) and a front mold core (301), wherein an inner wall tube mold cavity (114), a bronchial cavity (115) and a ventilation main pipe placement cavity (116) are formed between the rear mold core (101) and the front mold core (301), wherein the inner wall tube mold cavity (114) and the bronchial cavity (115) are respectively provided with an inner wall tube mold core (104) and a bronchial core (109), and the inner wall tube is molded by using the inner wall tube mold cavity (114), and then a spring is installed on the inner wall tube, and the inner wall tube with the spring installed is placed in the bronchial cavity (115) and connected to one of the holes of the ventilation main pipe, and the molding mold also comprises a bronchial sealing insert (106) for sealing the other hole of the ventilation main pipe, and after the sealing, a bronchial component is molded.

2. The molding die according to claim 1, characterized in that: The molding die also includes an inner wall tube core base (103), and the inner wall tube core (104) is connected to the inner wall tube core base (103).

3. The molding die according to claim 2, characterized in that: The molding die also includes a bronchial core base (105), and the bronchial core (109) is connected to the bronchial core base (105).

4. The molding die according to claim 3, characterized in that: The inner wall tube core base (103) and the bronchial tube core base (105) are detachably connected to the inner wall tube core (104) and the bronchial tube core (109).

5. The molding die according to claim 3 or 4, characterized in that: The bronchial core base (105) is provided with a bronchial side hole inlay needle (113).

6. The molding die according to claim 5, characterized in that: The rear mold core (101) is provided with a mold flow channel (111), and the mold flow channel (111) connects the inner wall tube mold cavity (114) and the bronchial cavity (115).

7. The molding die according to claim 6, characterized in that: A flow channel adjusting screw (12) is installed at the mold flow channel (111).

8. A bronchial component, characterized in that: The bronchial component is manufactured using the molding die described in any one of claims 1 to 7, and comprises an inner wall tube (202), an outer wall tube (201) and a spring (203), wherein the outer wall tube (201) and the inner wall tube (202) cover the spring (203).

9. The bronchial component according to claim 8, characterized in that: A connecting portion is provided between the spring (203) and the inner wall tube (202), and is used to maintain the position of the spring (203) on the inner wall tube (202) before the bronchial component is formed.

10. A double-lumen endobronchial tube, characterized in that: Comprising the bronchial component described in claim 8 or 9.

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