A gastric tube built-in fixing device and fixing method

Abstract

The application discloses a gastric tube built-in fixing device and fixing method, relates to the technical field of medical devices, and has the advantages of preventing a nasogastric tube from being pulled out of a patient's body, and the technical scheme is as follows: the nasogastric tube is connected with a main fixing assembly for preventing the nasogastric tube from being pulled out of the patient's body; the main fixing assembly comprises a connecting belt, one end of the connecting belt is inserted into a nostril on one side, passes through a posterior naris, and extends out of a nostril on the other side, and the connecting belt is tied and fixed into a ring structure at the two ends outside the two nostrils; a main base is fixed on the connecting belt, the main base is located on the front side of the fixed position of the two ends of the connecting belt, a mounting seat is arranged beside the nasogastric tube, the nasogastric tube is fixed on the mounting seat, and the mounting seat and the main base are detachably fixedly connected through a clamping assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a gastric tube built-in fixing device and fixing method. BACKGROUND

[0002] A nasogastric tube is a soft medical catheter inserted through the nasal cavity and retained in the stomach, which mainly provides enteral nutrition support, drug delivery or gastric content drainage and pressure reduction for patients who cannot safely eat orally, and is a commonly used life support channel in clinical practice.

[0003] After the patient inserts the nasogastric tube, the medical staff will take a tape, and cut one end of the tape into two wings (forming a "person" shape), and fix the uncut end to the alae nasi first, then wrap the two wings of the tape around the nasogastric tube, so as to fix the nasogastric tube to the patient and reduce the risk of the nasogastric tube being pulled out of the patient's body.

[0004] However, when the patient is agitated, the nasogastric tube or the head may be inadvertently pulled, causing the nasogastric tube to be accidentally pulled out, which not only increases the patient's pain and infection risk, but also increases the workload of the medical staff. SUMMARY

[0005] In view of the above technical deficiencies, the present application aims to provide a gastric tube built-in fixing device and fixing method, which has the advantage of preventing the nasogastric tube from being pulled out of the patient's body.

[0006] To solve the above technical problems, the present application adopts the following technical solutions:

[0007] The present application provides a gastric tube built-in fixing device and fixing method, comprising a nasogastric tube, wherein the nasogastric tube is connected with a main fixing assembly for preventing the nasogastric tube from being pulled out of the patient's body.

[0008] The main fixing assembly comprises a connecting belt, one end of the connecting belt extends into one nostril, passes through the posterior naris, and extends out of the other nostril, and the connecting belt is fixed and tied at both ends to form a ring structure.

[0009] A main body base is fixed on the connecting belt, the main body base is located on the front side of the connecting belt end fixing part, a mounting seat is arranged beside the nasogastric tube, the nasogastric tube is fixed to the mounting seat, and the mounting seat and the main body base are detachably fixed and connected through a clamping assembly.

[0010] By adopting the technical scheme, the nasogastric tube is connected to the mounting seat, the connecting belt is connected to the main base, the mounting seat and the main base are detachably fixedly connected through the clamping assembly, the nasogastric tube is convenient to disassemble, the main fixing assembly and the buffer safety assembly cooperate to form a double anti-disengagement mechanism for preventing the nasogastric tube from being pulled out of the patient's body under the pulling effect, the connecting belt is sleeved outside the nasal septum, the structure of the human nasal septum is used to provide support, the possibility that the connecting belt is loosened under the pulling of the patient and causes the nasogastric tube to be pulled out of the patient's body is reduced, and when the pulling force of the patient is too large, the connecting belt will pull the nasal septum part, the compression of the connecting belt on the nasal septum will be significantly enhanced, the patient is reminded and prevented from further pulling, the risk of nasogastric tube extubation is further reduced, and the discomfort of the patient caused by repeated intubation due to the disengagement of the nasogastric tube is also reduced, and the burden of medical staff is also reduced.

[0011] Preferably, the clamping assembly comprises a connecting shaft penetrating through the main base and being rotationally connected with the main base; both ends of the connecting shaft penetrate out of the main base, one end of the connecting shaft penetrating out of the main base is fixed with a handle, and the other end of the connecting shaft penetrating out of the main base is coaxially fixed with a first connecting column, a second connecting column, a third connecting column and a limiting block in sequence; the diameter of the first connecting column is smaller than that of the second connecting column, the diameter of the third connecting column is smaller than that of the first connecting column, the diameter of the limiting block is the same as that of the second connecting column, and the end of the limiting block away from the third connecting column is a circular arc surface; the outer wall surface of the second connecting column is provided with an inclined cutting groove, and the cutting groove extends to the connecting position of the second connecting column and the third connecting column.

[0012] Preferably, the mounting seat is fixed with a clamping plate on the side away from the main base, the two sides of the clamping plate are arranged obliquely and oppositely, the end of the clamping plate extends outwardly and is bent, and the bending part is clamped between the limiting block, the third connecting column and the second connecting column; the diameter of the second connecting column is greater than the spacing between the two ends of the clamping plate; the mounting seat and the clamping plate are both penetrated with through holes for the first connecting column, the second connecting column, the third connecting column and the limiting block to penetrate through.

[0013] Preferably, the clamping plate is made of elastic plastic material, and the elastic plastic material comprises one or more combinations of thermoplastic polyurethane, polyvinyl chloride and polyamide; the main base, the mounting seat, the connecting shaft, the handle, the first connecting column, the second connecting column, the third connecting column and the limiting block are all made of hard plastic material, and the hard plastic material comprises one or more combinations of polycarbonate, polyamide and polyvinyl chloride.

[0014] Preferably, the mounting seat is provided with a protection box with an inner cavity on the side away from the main base, when the mounting seat is connected with the main base, the clamping plate, the first connecting column, the second connecting column, the third connecting column and the limiting block are all located in the inner cavity of the protection box, and the protection box is made of transparent plastic material.

[0015] Preferably, the nasogastric tube is further provided with a buffer safety assembly for preventing the nasogastric tube from being separated from the patient's body; the buffer safety assembly comprises an outer protective tube sleeved outside the nasogastric tube, the outer protective tube is in sliding connection with the nasogastric tube in the axial direction, and the outer protective tube is connected with the main body base through a reset assembly.

[0016] Preferably, the reset assembly comprises a reset box fixed on the main body base; three transmission shafts are rotationally connected to the bottom of the inner cavity of the reset box, each transmission shaft is coaxially fixed with a fixed pulley; a reset rope is further included; one end of the reset rope is fixed to the wheel groove of the fixed pulley on the right side; the reset rope sequentially passes through the three fixed pulleys, and after passing through the fixed pulley on the left side, the other end of the reset rope passes out of the reset box and is in sliding connection with the reset box; the end of the reset rope passing out of the reset box is fixed with the outer protective tube; the reset box is further provided with a rotation structure matched with the fixed pulley on the right side.

[0017] Preferably, the rotation structure comprises a driving gear nested outside the transmission shaft on the right side; the driving gear is coaxially fixed with the transmission shaft on the right side; an ear seat is fixed to the bottom of the inner cavity of the reset box, a limiting shaft is rotationally connected to the ear seat, a driven gear is embedded on the outer wall of the limiting shaft, and the driven gear is in meshing connection with the driving gear; an annular plate is fixed to the ear seat, the annular plate is located outside the limiting shaft, and a clockwork is further connected to the circumferential outer wall of the limiting shaft, and the clockwork is located in the annular plate.

[0018] Preferably, an opening is formed on the reset box for the reset rope to pass out of the reset box and communicate with the inner cavity of the reset box, which is called a passing-out opening, the length of the passing-out opening is 2-5 cm, and the diameter of the reset rope is 0.5-1 cm.

[0019] A fixing method of a gastric tube built-in fixing device, comprising the following steps:

[0020] S1: a hard probe and a flexible probe are further included, magnets are fixed to the ends of the hard probe and the flexible probe, and a connecting belt is assembled to the flexible probe;

[0021] S2: the hard probe is lubricated, the hard probe is inserted into one nostril, the flexible probe is inserted into the other nostril, and the hard probe and the flexible probe are moved until the magnets at the ends of the hard probe and the flexible probe are connected;

[0022] S3: the hard probe is pulled, so that the hard probe and the flexible probe connected to the hard probe through the magnet are moved out of one nostril, at this time, the connecting belt connected to the flexible probe passes through the posterior naris, and the two ends respectively extend out of the two nostrils;

[0023] S4: remove the rigid probe and the flexible probe, and tie the end of the connecting band extending from both nostrils;

[0024] S5: the main base is fixed with the connecting band, the mounting seat is fixed with the nasogastric tube, the first connecting column, the second connecting column, the third connecting column and the limiting block pass through the through hole to penetrate the mounting seat and the clamping plate, so that the main base is fixed with the mounting seat;

[0025] S6: the outer protective tube is sleeved on the nasogastric tube, and the reset rope passing through the reset box is fixed with the outer protective tube.

[0026] The beneficial effects of the present application are that the nasogastric tube is connected to the mounting seat, the connecting band is connected to the main base, the mounting seat and the main base are detachably connected through the clamping assembly, the nasogastric tube is convenient to disassemble, the main fixed assembly and the buffer safety assembly cooperate to form a double anti-extrusion mechanism to prevent the nasogastric tube from being pulled out of the patient's body, the connecting band is sleeved outside the nasal septum, the structure of the human nasal septum provides support, reduces the possibility that the connecting band is loosened by the patient and causes the nasogastric tube to be pulled out of the patient's body, and when the patient pulls too hard, the connecting band will pull the nasal septum part, the pressure of the connecting band on the nasal septum will significantly increase, so as to remind the patient to stop pulling, further reduce the risk of nasogastric tube extubation, the buffer safety assembly is sleeved with the outer protective tube which is in sliding connection with the nasogastric tube, the nasogastric tube is protected, the possibility that the nasogastric tube is bent during pulling and affects the smooth feeding is reduced, at the same time, when the outer protective tube is pulled, the outer protective tube slides under the action of pulling, does not affect the normal use of the nasogastric tube, through the reset assembly, when the pulling force disappears, the reset assembly provides power to make the outer protective tube return to the initial state, continuously protects the nasogastric tube, reduces the discomfort of the patient caused by repeated intubation due to the separation of the nasogastric tube, and reduces the burden of medical staff. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 It is a whole structure schematic view of the embodiment;

[0029] Figure 2 It is a structure schematic view for embodying the handle of the embodiment;

[0030] Figure 3 It is a structure schematic view for embodying the clamping plate of the embodiment;

[0031] Figure 4A structure schematic diagram for embodying a through hole for the embodiment;

[0032] Figure 5 A structure schematic diagram of a reset box section for the embodiment;

[0033] Figure 6 A structure schematic diagram for embodying a spring for the embodiment.

[0034] Explanation of reference signs:

[0035] In the figure: 1, a nasogastric tube; 2, a connecting band; 3, a main body base; 4, a mounting seat; 5, an outer protective tube; 6, a connecting shaft; 7, a handle; 8, a first connecting column; 9, a second connecting column; 10, a third connecting column; 11, a limiting block; 12, a cutting groove; 13, a through hole; 14, a clamping plate; 15, a reset box; 16, a transmission shaft; 17, a fixed pulley; 18, a reset rope; 19, a driving gear; 20, an ear seat; 21, a limiting shaft; 22, a driven gear; 23, an annular plate; 24, a spring; 25, a through opening. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] A gastric tube built-in fixing device and fixing method, like Figures 1 to 6 , comprising a nasogastric tube 1, and a main fixing assembly connected to the nasogastric tube 1 to prevent the nasogastric tube 1 from being separated from the patient's body;

[0038] The main fixing assembly comprises a connecting band 2, one end of which extends into a nostril on one side, passes through the posterior naris, and extends out of the other nostril, and the two ends of the connecting band 2 outside the two nostrils are tied and fixed to form a ring structure.

[0039] The connecting band 2 is fixed with a main body base 3, which is located on the front side of the fixed position of the two ends of the connecting band 2. A mounting seat 4 is arranged beside the nasogastric tube 1, and the nasogastric tube 1 is fixed to the mounting seat 4. The mounting seat 4 and the main body base 3 are detachably fixedly connected through a clamping assembly.

[0040] The nasogastric tube 1 is connected to the mounting seat 4, the connecting belt 2 is connected to the main body base 3, the mounting seat 4 and the main body base 3 are detachably fixedly connected through the clamping assembly, the nasogastric tube 1 is convenient to disassemble, the main fixed assembly and the buffer safety assembly cooperate to form a double anti-extrusion mechanism for preventing the nasogastric tube 1 from being pulled out of the patient's body, the connecting belt 2 is sleeved outside the nasal septum, the structure of the nasal septum is used to provide support, the possibility that the connecting belt 2 is loosened and the nasogastric tube 1 is pulled out of the patient's body is reduced, and when the patient pulls too hard, the connecting belt 2 pulls the nasal septum part, the pressure of the connecting belt 2 on the nasal septum is significantly increased, so that the patient is reminded and prevented from further pulling, a physiological feedback type anti-extrusion mechanism is formed, and the risk of nasogastric tube 1 is further reduced.

[0041] Compared with the traditional method of connecting the nasogastric tube 1 to the patient's face by adhesive tape, the adhesive tape is pasted on the patient's face, which brings itching and discomfort to the patient's face, and once the patient pulls too hard, the adhesive tape will be separated from the patient's face, which is easy to cause damage to the patient's face, and the connecting belt 2 of the embodiment uses the nasal septum of the human body for support, reduces the risk of nasogastric tube 1, and does not cause damage to the patient's face, has a more friendly fitting effect.

[0042] In order to further reduce the damage of the connecting belt 2 to the patient, the material of the connecting belt 2 is soft medical silica gel material, and the damage to the nasal cavity mucosa of the patient is reduced when the connecting belt 2 is pulled.

[0043] As Figure 2 And Figure 3 And Figure 4 The clamping assembly comprises a connecting shaft 6 penetrating through the main body base 3 and being rotationally connected with the main body base 3. Both ends of the connecting shaft 6 penetrate through the main body base 3, and one end of the connecting shaft 6 penetrating through the main body base 3 is fixedly connected with a handle 7. The other end of the connecting shaft 6 penetrating through the main body base 3 is coaxially and sequentially fixedly connected with a first connecting column 8, a second connecting column 9, a third connecting column 10 and a limiting block 11. The diameter of the first connecting column 8 is smaller than that of the second connecting column 9, the diameter of the third connecting column 10 is smaller than that of the first connecting column 8, the diameter of the limiting block 11 is the same as that of the second connecting column 9, and the end of the limiting block 11 away from the third connecting column 10 is a circular arc surface. The outer wall surface of the second connecting column 9 is provided with an inclined cutting groove 12, and the cutting groove 12 extends to the connecting position of the second connecting column 9 and the third connecting column 10.

[0044] As Figure 2 And Figure 3 And Figure 4The mounting base 4 is fixed with a clamping plate 14 on the side away from the main base 3, the two sides of the clamping plate 14 are arranged obliquely and oppositely, the end of the clamping plate 14 extends outwardly and is clamped into the space between the limiting block 11, the third connecting column 10 and the second connecting column 9, the diameter of the second connecting column 9 is larger than the distance between the two ends of the clamping plate 14, and the mounting base 4 and the clamping plate 14 are both provided with through holes 13 for the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 to pass through.

[0045] After the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 are inserted into the through hole 13, the bent part of the clamping plate 14 is clamped into the space between the limiting block 11, the third connecting column 10 and the second connecting column 9, and the mounting base 4 is clamped and fixed with the main base 3, at this time, the cutting groove 12 is close to the clamping plate 14 and does not affect the normal use of the clamping plate 14, when the handle 7 is rotated and the cutting groove 12 is no longer close to the clamping plate 14, the second connecting column 9 pushes open the clamping plate 14, and the bent part of the clamping plate 14 is no longer located between the limiting block 11, the third connecting column 10 and the second connecting column 9, at this time, the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 can be taken out of the clamping plate 14, which facilitates the separation of the nasogastric tube 1 and the connecting belt 2.

[0046] As shown in Figure 2 and Figure 3 and Figure 4 The clamping plate 14 is made of elastic plastic material, the elastic plastic material includes one or more combinations of thermoplastic polyurethane, polyvinyl chloride and polyamide, and the main base 3, the mounting base 4, the connecting shaft 6, the handle 7, the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 are all made of hard plastic material, which includes one or more combinations of polycarbonate, polyamide and polyvinyl chloride.

[0047] The clamping plate 14 is made of elastic plastic material, which has sufficient structural rigidity and provides good elastic deformation capability and fatigue resistance, and is suitable for repeated clamping and releasing actions, the main base 3, the mounting base 4, the connecting shaft 6, the handle 7 and the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 are made of hard plastic material, which has high structural strength and wear resistance, facilitating the repeated clamping and disconnection of the clamping plate 14 with the limiting block 11, the third connecting column 10 and the second connecting column 9, and the above materials are light in quality, when the device is placed on the patient's face with the nasogastric tube 1 and the connecting belt 2, the pressure and indentation on the patient's face are reduced, and the comfort of the user is improved.

[0048] As shown in Figure 2 and Figure 3 and Figure 4The mounting seat 4 is provided with a protective box with a hollow cavity away from the main base 3. When the mounting seat 4 is connected with the main base 3, the clamping plate 14, the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 are located in the cavity of the protective box, and the protective box is made of transparent plastic material. The protective box does not affect the connection between the mounting seat 4 and the main base 3, and protects the clamping plate 14, the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11.

[0049] The protective box is externally nested with a transparent silica gel sleeve fixedly connected with the outer wall of the protective box. By arranging the transparent silica gel sleeve, the connection between the main base 3 and the mounting seat 4 can be conveniently observed, the possibility of scratching the face of the patient by the protective box is reduced, and the safety of the device is improved.

[0050] As shown in Figure 2 and Figure 3 and Figure 4 and Figure 1 and Figure 2 and Figure 3 The nasal gastric tube 1 is further provided with a buffer safety assembly for preventing the nasal gastric tube 1 from being separated from the patient's body. The buffer safety assembly comprises an outer protective tube 5 sleeved outside the nasal gastric tube 1 and in slidable connection with the nasal gastric tube 1 in the axial direction, and the outer protective tube 5 is connected with the main base 3 through a reset assembly. The buffer safety assembly protects the nasal gastric tube 1 by sleeving the outer protective tube 5 in slidable connection with the nasal gastric tube 1 outside the nasal gastric tube 1, reduces the possibility of affecting the smooth feeding of the nasal gastric tube 1 in the process of pulling, and does not affect the normal use of the nasal gastric tube 1 when the outer protective tube 5 is pulled and slides under the pulling action. By arranging the reset assembly, when the pulling force disappears, the reset assembly provides power to make the outer protective tube 5 return to the initial state, thereby continuously protecting the nasal gastric tube 1.

[0051] As shown in Figure 4 and Figure 5 and Figure 6 The reset assembly comprises a reset box 15 fixed to the main base 3. Three transmission shafts 16 are rotationally connected to the groove bottom in the cavity of the reset box 15 and are alternately arranged. Each transmission shaft 16 is coaxially fixed with a fixed pulley 17. The reset assembly further comprises a reset rope 18. One end of the reset rope 18 is fixed to the wheel groove of the fixed pulley 17 on the right side. The reset rope 18 successively passes through the three fixed pulleys 17, and after passing through the fixed pulley 17 on the left side, the other end of the reset rope 18 penetrates out of the reset box 15 and is in slidable connection with the reset box 15. The end of the reset rope 18 penetrating out of the reset box 15 is fixed with the outer protective tube 5. The reset box 15 further comprises a rotating structure matched with the fixed pulley 17 on the right side, and the three fixed pulleys 17 are arranged in a triangular shape.

[0052] As shown in Figure 1 and Figure 5The rotating structure comprises a driving gear 19 nested outside the right transmission shaft 16; the driving gear 19 is coaxially fixed with the right transmission shaft 16; an ear seat 20 is fixed on the bottom of the inner cavity groove of the reset box 15, the ear seat 20 is rotationally connected with a limiting shaft 21, the limiting shaft 21 is embedded with a driven gear 22, the driven gear 22 is engaged with the driving gear 19; an annular plate 23 is fixed on the ear seat 20, the annular plate 23 is located outside the limiting shaft 21, and a clockwork 24 is further connected to the circumferential outer wall of the limiting shaft 21, and the clockwork 24 is located in the annular plate 23.

[0053] Compared with the way of connecting the outer protective tube 5 by the spring, if the spring is stretched in multiple directions, it will cause the problem of jamming or difficulty in resetting, the application adopts the cooperation of the pulley 17 and the reset rope 18 to adapt to the pulling and stretching of the patient in different directions, so that the reset assembly has better adaptive effect on the embodiment.

[0054] The utilization rate of the embodiment is higher, the application supports the patient to pull the outer protective tube 5 in any direction, which does not affect the nasogastric tube 1,

[0055] As Figure 6 Figure 5 Figure 6 Figure 5 An opening, referred to as a through opening 25, is formed in the reset box 15 and communicates with the inner cavity of the reset box 15 for the reset rope 18 to pass through, the length of the through opening 25 is 2-5 cm, and the diameter of the reset rope 18 is 0.5-1 cm. The length of the through opening 25 on the reset box 15 is greater than the diameter of the reset rope 18, so that the patient can pull the outer protective tube 5 in different directions without being stuck.

[0056] The inner diameter of the outer protective tube 5 is between 5-10 mm, and the outer diameter of the nasogastric tube 1 is between 2-4 mm. The outer protective tube 5 cooperates with the pulley 17, when the patient unconsciously pulls the outer protective tube 5, the direction of the outer protective tube 5 changes, the reset rope 18 can continue to move while not affecting the normal work of the nasogastric tube 1.

[0057] A fixing method of a gastric tube built-in fixing device, comprising the following steps:

[0058] S1: further comprising a hard probe and a flexible probe, the ends of the hard probe and the flexible probe are fixed with mutually matched magnets, and the connecting belt 2 is assembled on the flexible probe;

[0059] S2: lubricating the hard probe, inserting the hard probe into one nostril, and then inserting the flexible probe into the other nostril, and moving the hard probe and the flexible probe until the magnets at the ends of the hard probe and the flexible probe are connected;

[0060] S3: pulling the hard probe, so that the hard probe and the flexible probe connected with the hard probe through the magnet are moved out of one nostril, at this time the connecting belt 2 connected with the flexible probe passes through the posterior naris, and the two ends respectively extend out of the two nostrils;

[0061] S4: remove the rigid probe and the flexible probe, and tie the end of the connecting band 2 extending from both nostrils;

[0062] S5: the main base 3 is fixed with the connecting band 2, the mounting seat 4 is fixed with the nasogastric tube 1, the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 pass through the through hole 13 to penetrate the mounting seat 4 and the clamping plate 14, so that the main base 3 is fixed with the mounting seat 4;

[0063] S6: the outer protective tube 5 is sleeved on the nasogastric tube 1, and the reset rope 18 passing through the reset box 15 is fixed with the outer protective tube 5.

[0064] In use, the medical staff attaches the connecting band 2 to the outside of the flexible probe, and the two ends of the connecting band 2 are tied to the flexible probe, then the medical staff lubricates the rigid probe with a lubricant, inserts the rigid probe into one nostril of the patient, inserts the flexible probe into the other nostril, pushes the rigid probe and the flexible probe to move in the nasal cavity, until the magnets at the ends of the rigid probe and the flexible probe are connected, so that the rigid probe and the flexible probe are combined and fixed as an integrated structure, then the staff member holds the rigid probe and pulls it outwards until the rigid probe and the flexible probe are removed from one of the nostrils, at this time, the connecting band 2 passes through the posterior naris, and the two ends of the connecting band 2 extend out of the two nostrils, the ends of the connecting band 2 extending from both nostrils are tied and fixed as a ring structure, and the rigid probe and the flexible probe are both provided with a scale, which facilitates the medical staff to determine the moving distance of the rigid probe and the flexible probe.

[0065] At this time, the staff member penetrates the first connecting column 8, the second connecting column 9, the third connecting column 10 and the limiting block 11 through the through hole 13 to penetrate the mounting seat 4 and the clamping plate 14, and the bent part of the clamping plate 14 is clamped between the limiting block 11, the third connecting column 10 and the second connecting column 9, so that the main base 3 is clamped and fixed with the mounting seat 4.

[0066] The outer protective tube 5 is sleeved on the nasogastric tube 1, the reset rope 18 passing through the reset box 15 is fixed with the outer protective tube 5, and the outer protective tube 5 and the nasogastric tube 1 are slightly bent, so that the outer protective tube 5 and the nasogastric tube 1 pass around the patient's ear, at this time, when the patient unconsciously pulls and pulls the outer protective tube 5 in different directions, the outer protective tube 5 moves outside the nasogastric tube 1, and the reset rope 18 fixed with the outer protective tube 5 moves.

[0067] In the initial state, the reset rope 18 is wound around the right side of the fixed pulley 17 for multiple turns, and then passes through the other two fixed pulleys 17 in turn, and the mainspring 24, the follow-up gear 22 and the limiting shaft 21 are limited, so as to limit the driving gear 19, so that it remains stable without external force pulling;

[0068] When there is an external force, the reset rope 18 moves to drive the three fixed pulleys 17 to rotate, and then drive the driving gear 19 to rotate, the rotation of the driving gear 19 will drive the driven gear 22 to rotate, and the clockwork 24 is tightened, at this time the movement of the outer protective tube 5 does not affect the normal work of the nasogastric tube 1;

[0069] When there is no external force, the clockwork 24 rebounds to drive the driven gear 22 to rotate in the opposite direction, and then the reset rope 18 returns to the original position, the reset box 15 is provided with a guide plate on the bottom of the inner cavity groove, which helps the reset rope 18 to be repeatedly used;

[0070] If the patient pulls the nasogastric tube 1 during pulling, the connecting belt 2 connected with the nasogastric tube 1 is sleeved outside the nasal septum, and the connecting belt 2 moves to significantly enhance the compression feeling of the nasal septum, so as to naturally remind the patient to loosen the hand holding the nasogastric tube 1, and further reduce the risk of nasogastric tube 1 extubation.

[0071] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A gastric tube built-in fixing device comprising a nasogastric tube (1), characterized in that, The nasal gastric tube (1) is connected with a main fixing assembly for preventing the nasal gastric tube (1) from being separated from the patient's body; The main fixing assembly comprises a connecting belt (2), one end of the connecting belt (2) extends into the nostril on one side, passes through the posterior naris, and extends out of the nostril on the other side, and the two ends of the connecting belt (2) outside the two nostrils are tied and fixed in a ring structure; A main body base (3) is fixed on the connecting belt (2), the main body base (3) is located on the front side of the fixed position of the two ends of the connecting belt (2), a mounting seat (4) is arranged beside the nasal gastric tube (1), the nasal gastric tube (1) is fixed on the mounting seat (4), and the mounting seat (4) and the main body base (3) are detachably fixed and connected through a clamping assembly; The nasal gastric tube (1) is further provided with a buffer safety assembly for preventing the nasal gastric tube (1) from being separated from the patient's body; The buffer safety assembly comprises an outer protective tube (5) sleeved outside the nasal gastric tube (1), the outer protective tube (5) is slidably connected with the nasal gastric tube (1) in the axial direction of the nasal gastric tube (1), and the outer protective tube (5) is connected with the main body base (3) through a reset assembly; The reset assembly comprises a reset box (15) fixed on the main body base (3); Three transmission shafts (16) are rotationally connected to the bottom of the inner cavity groove of the reset box (15) in an alternating arrangement, and a fixed pulley (17) coaxially fixed with the transmission shaft (16) is nested on each transmission shaft (16); Further comprising a reset rope (18); One end of the reset rope (18) is fixed to the wheel groove of the fixed pulley (17) on the right side; The reset rope (18) sequentially passes through the three fixed pulleys (17), and after passing through the fixed pulley (17) on the left side, the other end of the reset rope (18) penetrates out of the reset box (15) and is slidably connected with the reset box (15); The end of the reset rope (18) penetrating out of the reset box (15) is fixed with the outer protective tube (5); The reset box (15) further comprises a rotating structure matched with the fixed pulley (17) on the right side; When the patient unconsciously pulls the outer protective tube (5), the direction of the outer protective tube (5) changes, the reset rope (18) can continue to move while not affecting the normal work of the nasal gastric tube (1).

2. The gastric tube built-in fixing device according to claim 1, characterized in that The clamping assembly comprises a connecting shaft (6) penetrating through the main body base (3) and rotationally connected with the main body base (3); The connecting shaft (6) penetrates through the main body base (3) at both ends, a handle (7) is fixed to one end of the connecting shaft (6) penetrating through the main body base (3), and a first connecting column (8), a second connecting column (9), a third connecting column (10) and a limiting block (11) are coaxially and sequentially fixed to the other end of the connecting shaft (6) penetrating through the main body base (3); The diameter of the first connecting column (8) is smaller than that of the second connecting column (9), the diameter of the third connecting column (10) is smaller than that of the first connecting column (8), the diameter of the limiting block (11) is the same as that of the second connecting column (9), and the end of the limiting block (11) away from the third connecting column (10) is a circular arc surface; The outer wall surface of the second connecting column (9) is provided with an inclined cut groove (12), and the cut groove (12) extends to the connecting position of the second connecting column (9) and the third connecting column (10).

3. The gastric tube built-in fixing device according to claim 2, characterized in that The mounting seat (4) is fixed with a clamping plate (14) on the side away from the main body base (3), the two sides of the clamping plate (14) are arranged obliquely and oppositely, the end of the clamping plate (14) extends outwardly and is clamped into the position between the limiting block (11), the third connecting column (10) and the second connecting column (9); The diameter of the second connecting column (9) is greater than the spacing between the two ends of the clamping plate (14); The mounting seat (4) and the clamping plate (14) are both provided with through holes (13) for the first connecting column (8), the second connecting column (9), the third connecting column (10) and the limiting block (11) to pass through.

4. The gastric tube built-in fixing device according to claim 3, characterized in that The clamping plate (14) is made of elastic plastic material, and the elastic plastic material includes one or more combinations of thermoplastic polyurethane, polyvinyl chloride and polyamide. The main body base (3), the mounting seat (4), the connecting shaft (6), the handle (7), the first connecting column (8), the second connecting column (9), the third connecting column (10) and the limiting block (11) are all made of hard plastic material, and the hard plastic material includes one or more combinations of polycarbonate, polyamide and polyvinyl chloride.

5. The gastric tube built-in fixing device according to claim 3, wherein The mounting seat (4) is provided with a protection box with a hollow inner cavity on the side away from the main body base (3), when the mounting seat (4) is connected with the main body base (3), the clamping plate (14), the first connecting column (8), the second connecting column (9), the third connecting column (10) and the limiting block (11) are all located in the inner cavity of the protection box, and the protection box is made of transparent plastic material.

6. The gastric tube built-in fixing device according to claim 1, wherein The rotation structure comprises a driving gear (19) nested outside the transmission shaft (16) on the right side; The driving gear (19) is coaxially fixed with the transmission shaft (16) on the right side; The ear seat (20) is fixed on the groove bottom in the inner cavity of the reset box (15), the limiting shaft (21) is rotatably connected to the ear seat (20), the driven gear (22) is embedded on the outer wall of the limiting shaft (21), and the driven gear (22) is engaged with the driving gear (19); An annular plate (23) is fixed on the ear seat (20), the annular plate (23) is located outside the limiting shaft (21), and a clockwork spring (24) is further connected to the circumferential outer wall of the limiting shaft (21), and the clockwork spring (24) is located in the annular plate (23).

7. An in-gastric tube fixing device according to claim 6, wherein An opening is formed in the reset box (15) for the reset rope (18) to pass out and communicate with the inner cavity of the reset box (15), which is called a passing-out opening (25), the length of the passing-out opening (25) is 2-5 cm, and the diameter of the reset rope (18) is 0.5-1 cm.

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