CN209575460U - Nasotracheal Intubation Guide - Google Patents

Abstract

The utility model relates to a nasotracheal intubation guide core, which comprises an elastic metal guide wire whose front part is preformed into a curved shape. Cap, the front end of the metal guide cable is fixed with an end cap, the head of the end cap is arc-shaped, the tail of the end cap is connected with a traction wire extending along the metal guide cable and passing through the positioning socket cap, and the traction steel wire passes through the positioning socket One end of the cap is connected with a traction operation device, and the curved part of the metal guide rope is provided with a guide ring near the turning point, and the traction steel wire passes through the guide ring, and the traction steel wire is driven to drive the metal guide wire under the guidance of the guide ring. The upper end cap of the cable moves around the inner arc side of the curved part of the metal guide cable. The shape of the nasal endotracheal tube is realized, and the angle of the front end of the nasal endotracheal tube can be adjusted, which makes the operation of the nasal endotracheal tube simpler and more reliable, and improves the safety and efficiency of the operation.

Description

Nasotracheal Intubation Guide

technical field

The utility model relates to the technical field of medical instruments, in particular to a medical instrument for nasopharynx and throat, more specifically a guide core for nasotracheal intubation.

Background technique

Endotracheal intubation refers to the technique of inserting a special endotracheal tube into the trachea through the glottis, which is called endotracheal intubation. This technique can provide the best conditions for airway patency, ventilation and oxygen supply, respiratory tract suction and prevention of aspiration. . Existing methods of tracheal intubation include oral intubation and nasal intubation.

Nasotracheal intubation is a method of tracheal intubation used by anesthesiologists to meet surgical requirements. During nasal endotracheal intubation, when the endotracheal tube passes through the nasal cavity and reaches the glottis, there will be a certain angle between the opening of the endotracheal tube and the glottis, which will hinder the intubation. Usually, the anesthesiologist will insert the intubation forceps through the mouth, clamp the tip of the endotracheal tube with the intubation forceps, adjust the angle to guide it to the glottis, and complete the endotracheal intubation. This is time-consuming and labor-intensive, and there is also a risk of oral injury and cross-infection due to the use of intubation forceps. In addition, patients who have difficulty opening the mouth or cannot place a laryngoscope and who have undergone intraoral surgery often require conscious blind nasal intubation under surface and local anesthesia. Blind intubation must keep the patient breathing spontaneously, and the anesthesiologist guides the insertion of the catheter into the trachea by listening to the strength of the patient's breathing airflow through the catheter. This method is easily disturbed by external noisy environmental factors, which affects the success rate of intubation.

Utility model content

Purpose of the invention of the utility model: In order to overcome the defects existing in the prior art, the utility model provides a nasotracheal intubation guide core which realizes shaping of the transnasal tracheal tube and realizes that the front end angle of the nasal tracheal tube can be adjusted, so that Nasal intubation is simpler and more reliable, improving surgical safety and efficiency.

In order to achieve the above object, the utility model provides the following technical solutions:

A guide core for nasal endotracheal intubation, including an elastic metal guide wire whose front part is preformed into a curved shape. An end cap is fixed at the front end of the cable, and the head of the end cap is arc-shaped. The tail of the end cap is connected with a traction wire extending along the metal guide cable and passing through the positioning socket cap. The traction steel wire passes through one end of the positioning socket cap to connect There is a traction operation device, the curved part of the metal guide rope is provided with a guide ring near the turning point, the traction steel wire passes through the guide ring, and the traction steel wire is pulled under the guidance of the guide ring to drive the upper cap of the metal guide cable around The inner arc side of the curved part of the metal guide wire is active.

The utility model provides a guide core for nasal endotracheal intubation, which fills the technical blank of the existing endotracheal endotracheal endotracheal tube without a guide core. When in use, the front end of the metal guide wire (the end with the end cap) is inserted into the endotracheal endotracheal endotracheal tube , the positioning socket cap is sleeved on the nozzle of the nasal endotracheal tube to realize the positioning and assembly of the guide core and the nasal endotracheal tube. , which is more in line with the angle of nasal intubation. More importantly, when the nasal endotracheal intubation passes through the nasal cavity and reaches the glottis, the curved part of the metal guide wire is deformed by pulling the wire, and the upper end cap of the metal guide wire drives The front end of the nasotracheal intubation can adjust the angle so that the front end of the nasotracheal intubation can enter the glottis smoothly. Cooperate; the guide ring realizes the guidance of the traction steel wire, avoids the interference of the traction steel wire and other components, and at the same time achieves the guiding of the traction steel wire to complete the pulling of the traction steel wire to drive the upper end cap of the metal guide cable to move around the inner arc side of the curved part of the metal guide cable, Better realize the directional adjustment of the front end of the metal guide wire. The nasal endotracheal intubation guide core is an auxiliary device independent of the nasal endotracheal intubation, can adapt to the use of the existing nasal endotracheal intubation, has better versatility, simple principle, easy disinfection, simple and convenient operation, and improves Medical efficiency and safety.

Preferably, the traction operation device is a retracting device with a one-way locking function to prevent the action of the traction steel wire under the action of the elastic force of the metal guide cable. Under this structural design, the operation of the traction steel wire can be better realized, and the elastic force of the metal guide cable can avoid reversely affecting the traction steel wire, which is convenient for operation and improves safety.

Preferably, the traction operation device includes a housing and an adjustment operation wheel, a worm, a worm wheel and a retracting wheel arranged in the housing, the housing is fixed on the metal guide wire, the adjustment operation wheel is connected to the worm, and the worm is connected to the The worm gear meshes and cooperates, the worm gear is installed in the housing through the transmission shaft, the retracting wheel is installed in the housing through the wheel shaft, the wheel shaft and the transmission shaft are connected through a transmission mechanism, and the traction steel wire is fixed on the retracting wheel. Under this structural design, the transmission is realized through the worm gear, which has the functions of deceleration and self-locking, so as to prevent the action of the traction wire under the action of the elastic force of the metal guide cable and make the adjustment accuracy better.

Preferably, the worm wheel includes a wheel body, and an axial ring gear is axially extended on the outer circumference of the wheel body. Under this structural design, the worm gear adopts the structural form of the end ring gear, which makes the structure of the traction operation device compact.

Preferably, the transmission mechanism is a reduction gear pair. Under this structural design, deceleration transmission is realized, thereby realizing adjustment operation with better precision.

Preferably, the tail of the metal guide wire is provided with a handle, the housing is provided with a central piercing hole, the housing is fixedly fitted on the metal guide wire handle through the central piercing hole, and one end of the housing is provided with a The central end hole corresponding to the center piercing hole position, the adjustment operation wheel is positioned and rotated to fit on the center end hole of the housing, the operation wheel disc of the adjustment operation wheel is exposed to the housing, and the adjustment operation wheel is coaxially arranged with the handle. Under this structural design, the assembly of the housing and the metal guide cable is convenient, and the adjustment operation wheel is arranged coaxially with the handle, so the structure is compact; it is convenient for the position of the retracting wheel to correspond to the traction steel wire.

Preferably, the adjustment operation wheel is provided with a central shaft hole through which the handle passes, and one end of the handle passing through the central shaft hole is provided with a circular plate axially shielded above the operation wheel disc of the adjustment operation wheel. Under this structural design, the circular plate shields and protects the adjustment operation wheel in the axial direction, so as to better avoid accidental disturbance of the adjustment operation wheel.

Preferably, a scale indicating structure is arranged circumferentially between the operation wheel of the adjustment operation wheel and the circular plate. Under this structure design, the adjustment indication is realized, which is convenient for observation and adjustment operation.

Preferably, the metal guide wire is hollow tubular, and the head of the end cap is provided with a through hole corresponding to the central lumen of the metal guide wire, and a hollow hose is installed in the central lumen of the metal guide wire , the front end of the hollow hose extends to the through hole of the end cap, the tail end of the hollow hose passes through the tail of the metal guide wire, and the tail end of the hollow hose is connected to an auxiliary medical device; the auxiliary medical device is a carbon dioxide detector or Aspirator, the end of the hollow hose is connected to a carbon dioxide detector or a sputum aspirator or connected to a carbon dioxide detector and a sputum aspirator through a tee. Under this structural design, the metal guide wire forms a channel for the hollow hose to be placed. The hollow hose connects the inside of the human body with the outside world. The hollow hose connects with the corresponding auxiliary medical equipment as needed, so as to better help the medical operation. , improve medical efficiency and safety; the use of carbon dioxide detectors can assist in guiding and judging the blind nasal intubation of conscious patients to confirm that the catheter reaches the trachea. At the same time, because many patients have sputum, which interferes with the intubation line of sight, the sputum suction device can remove the sputum in the patient's body and avoid interference with the line of sight during medical treatment.

Preferably, the metal guide wire is in the shape of a helical tube formed by extending a metal wire in a helical shape. Under this structural design, the metal guide cable is easy to process and achieves good shaping effect and elastic effect.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Fig. 1 is the usage status diagram of the guide core of the nasal endotracheal intubation according to the specific embodiment of the present invention;

Fig. 2 is a partially enlarged view of part A in Fig. 1;

Fig. 3 is a partially enlarged view of part B in Fig. 1;

Fig. 4 is a schematic diagram of a partial structure of the head part of the guide core according to a specific embodiment of the present invention;

Fig. 5 is a schematic structural diagram of the traction operating device of a specific embodiment of the utility model;

Fig. 6 is a schematic diagram of the internal structure of the traction operating device of a specific embodiment of the utility model;

Fig. 7 is an exploded view of the positioning sleeve cap of the specific embodiment of the utility model;

Fig. 8 is a structural schematic diagram of a locking cap of a specific embodiment of the present invention.

Detailed ways

Referring to accompanying drawings 1 to 8, a guide core for nasal endotracheal intubation disclosed by the utility model includes an elastic metal guide wire 1 whose front part is preformed into a curved shape, and the curvature of the curved part of the metal guide wire 1 can be Prefabricate according to needs, the metal guide wire 1 is covered with a positioning sleeve cap 2 for being socketed on the mouth of the nasal endotracheal intubation I, the front end of the metal guide wire 1 is fixed with an end cap 3, and the head 31 of the end cap 3 is round Arc-shaped to avoid damage to the end cap for nasal endotracheal intubation. The end cap 3 includes a spherical head and a tubular tail 32. The tubular tail 32 of the end cap 3 is sleeved on the metal guide wire 1 and can be fixed by welding. The end cap The tail of 3 is connected with the traction steel wire 4 that extends along the metal guide cable 1 and passes through the positioning socket cap 2. The positioning socket cap 2 is provided with a hole for the traction steel wire 4 to pass through. The traction steel wire 4 can also be fixed by welding The tail end of the end cap 3 can be inserted into a blind hole at the tail end of the end cap 3, and the end of the traction steel wire 4 is inserted into the blind hole and then welded and fixed. One end of the traction steel wire 4 passing through the positioning sleeve cap 2 is connected with a traction operating device 5 The curved part 11 of the metal guide cable 1 is provided with a guide ring 6 near the inflection point a, the traction steel wire 4 passes through the guide ring 6, and the traction steel wire 4 is driven to drive the metal guide wire 4 under the guidance of the guide ring 6. The upper end cap 3 of the cable 1 moves around the inner arc side of the curved part of the metal guide cable 1; the guide ring adopts a figure-of-eight shape and can be fixed on the metal guide cable 1 by welding. Cap so that the front end of the metal guide wire deforms around the curved section. The utility model provides a guide core for nasal endotracheal intubation, which fills the technical blank of the existing endotracheal endotracheal endotracheal tube without a guide core. When in use, the front end of the metal guide wire (the end with the end cap) is inserted into the endotracheal endotracheal endotracheal tube , the positioning socket cap is sleeved on the nozzle of the nasal endotracheal tube to realize the positioning and assembly of the guide core and the nasal endotracheal tube. , which is more in line with the angle of nasal intubation. More importantly, when the nasal endotracheal intubation passes through the nasal cavity and reaches the glottis, the curved part of the metal guide wire is deformed by pulling the wire, and the upper end cap of the metal guide wire drives The front end of the nasotracheal intubation can adjust the angle so that the front end of the nasotracheal intubation can enter the glottis smoothly. Cooperate; the guide ring realizes the guidance of the traction steel wire, avoids the interference of the traction steel wire and other components, and at the same time achieves the guiding of the traction steel wire to complete the pulling of the traction steel wire to drive the upper end cap of the metal guide cable to move around the inner arc side of the curved part of the metal guide cable, Better realize the directional adjustment of the front end of the metal guide wire. The nasotracheal intubation guide core has a simple principle, is convenient for disinfection treatment, is simple and convenient to operate, and improves medical efficiency and safety.

The traction operation device 5 is a retracting device with a one-way locking function to prevent the action of the traction steel wire 4 under the action of the elastic force of the metal guide cable. The one-way locking function is to only allow the traction operating device to control the traction wire, while the elastic force of the metal guide cable can not drive the traction operation device when it reverses the traction wire, which can better realize the operation of the traction wire and avoid the metal guide wire. The elastic force reversely pulls the traction steel wire, which is convenient for operation and improves safety.

Specifically: the traction operation device 5 includes a housing 51 and an adjustment operation wheel 52, a worm 53, a worm wheel 54 and a retracting wheel 55 arranged in the housing 51, the housing 51 is fixed on the metal guide cable 1, and the The adjustment operation wheel 52 and the worm 53 are connected through gear transmission, and the worm 53 and the worm wheel 54 mesh and cooperate. 57 and the transmission shaft 56 are connected through a transmission mechanism 58, and the traction steel wire 4 is fixed on the take-up wheel 55. The transmission is realized by the worm gear, which has the function of deceleration and self-locking, so as to prevent the action of the traction wire under the action of the elastic force of the metal guide cable and make the adjustment accuracy better. Wherein, the transmission mechanism 58 is a reduction gear pair; in this specific embodiment, it includes a first gear 581 , a second gear 582 and a third gear 583 . Realize deceleration transmission, so as to realize adjustment operation with better precision.

In order to facilitate processing and assembly, the tail of the metal guide wire 1 is provided with a handle 11, and the housing 51 is provided with a central piercing hole 511. On the handle 11, one end of the housing 51 is provided with a central end hole corresponding to the position of the central piercing hole 511. The adjustment operation wheel 52 is positioned and rotated to fit on the central end hole of the housing 51, and the operation wheel of the adjustment operation wheel 52 The disc 521 is exposed from the casing 51 , and the adjustment operation wheel 51 is coaxially arranged with the handle 11 . A handle is provided on the metal guide cable 1 to facilitate the closure of the tail of the metal guide cable. At the same time, the casing is inserted into the handle, so that the retracting operation device is independently processed and assembled on the handle, which is convenient for processing and assembly, and the adjustment operation The wheel and the handle are coaxially arranged, and the structure is compact; it is convenient for the position correspondence between the retracting wheel and the traction steel wire. In addition, the worm wheel 54 includes a wheel body 541 , and an axial ring gear 542 is axially extended on the outer circumference of the wheel body 541 . The worm gear adopts the structure of the face gear, which makes the structure of the traction operation device compact. In particular, when the worm gear adopts the form of the face gear, it can better give way to the handle.

Further, the adjustment operation wheel 52 is provided with a central axis hole 522 through which the handle 11 passes, and one end of the handle 11 passing through the central axis hole 522 is provided with an operation wheel that axially shields the adjustment operation wheel 52 Circular plate 111 above 521. Moreover, a scale indicator structure is arranged along the circumferential direction between the operation wheel 521 of the adjustment operation wheel 52 and the circular plate 111 . The circular plate shields the adjustment operation wheel in the axial direction, better avoiding accidental disturbance of the adjustment operation wheel; and it is convenient to install a scale indicator structure, which can be the scale line 523 distributed around the circumference and the indication that cooperates with the scale line Line, to achieve adjustment instructions, easy to observe and adjust the operation.

Further, the metal guide wire 1 is hollow tubular, and the head of the end cap 3 is provided with a through hole 30 corresponding to the central lumen 10 of the metal guide wire 1, and the central lumen 10 of the metal guide wire 1 is A hollow hose 7 is installed inside, the front end of the hollow hose 7 extends to the through hole 30 of the end cap 3, the tail end of the hollow hose 7 passes through the tail of the metal guide wire 1, and the tail end of the hollow hose 7 is connected to Auxiliary medical device; the auxiliary medical device is a carbon dioxide detector 8 or a sputum suction device 9, and the tail end of the hollow hose 7 is connected to the carbon dioxide detector 8 or the sputum suction device 9 or is connected to the carbon dioxide detector 8 and the sputum suction device through a tee 9. The inside of the metal guide wire forms a channel for the hollow hose to be placed. The hollow hose connects the inside of the human body with the outside world. The hollow hose connects with the corresponding auxiliary medical equipment as needed, so as to better help the medical operation, improve medical efficiency and Safety; the carbon dioxide detector connected to the end of the hollow hose can display the waveform of end-breathing carbon dioxide through the monitor, thereby improving the success rate of conscious transnasal blind intubation. Confirm that the tube reaches the trachea during blind intubation. At the same time, because many patients have sputum, which interferes with the intubation line of sight, the sputum suction device can remove the sputum in the patient's body and avoid interference with the line of sight during medical treatment.

Wherein, the metal guide cable 1 may be a thin tubular steel wire. In this specific embodiment, the metal guide cable 1 is a helical tube formed by extending a metal wire in a helical shape. The metal guide wire is easy to process and achieves good shaping effect and elastic effect.

The positioning sleeve cap 2 is adjustable on the metal guide wire 1, the positioning sleeve cap 2 includes a clamping cap 21 and a locking cap 22, and the clamping cap 21 includes a connection with the nasal cannula 1 The socket part 211 that the nozzle is inserted into fits, and the tail end of the socket part 211 is provided with a clamping part 212, and the center of the clamping part 212 is provided with a guide hole for the metal guide wire 1 to pass through, and the clamping part 212 is located at the guide The side of the cable hole is provided with a steel wire through hole 21-1 for the traction steel wire to pass through. The clamping part 212 includes a stud 2121 with an external thread. Elastic clamping column 2122 is extended to, and elastic clamping column 2122 is surrounded by several elastic clamping blocks distributed in the circumferential direction, and the guide wire hole includes the positioning hole section located at the center of stud 2121 and the clip surrounded by elastic clamping blocks. In the holding hole section, the outer peripheral surface 21221 of the free end of the elastic clamping column 2122 is conical, and the steel wire through hole 21-1 corresponds to one of the elastic clamping blocks, and the steel wire through hole 21-1 adopts the radial direction of the elastic clamping column. The direction is adapted to the flat notch-shaped design. The locking cap 22 includes a threaded sleeve part 221 screwed with the stud 2121. The tail of the threaded sleeve part 221 is extended with a tapered cap body 222. The tapered cap body 222 The inner tapered cavity 2221 and the outer conical surface 21221 of the elastic clamping column 2122 are correspondingly matched to form a control elastic clamping column 2122 to clamp and release the metal guide wire 1, and the traction steel wire 4 passes through the steel wire through hole 21-1 and the cone Shaped cap body 222, the metal guide wire 1 passes through the guide wire hole and the tapered cap body 222. The tapered cap body 222 is positioned and rotated relative to the other port connected to the threaded sleeve part 221, and a positioning end cap 223 is provided. The hole 2231, and the guide wire corresponding to the position of the guide wire hole pass through the positioning hole 2232. Of course, the tapered cap body 222 can also be designed with a large port for passing through the metal guide wire and the pulling steel wire.

Claims (10)

1. A nasotracheal intubation guide core is characterized in that: it comprises a metal guide wire with elasticity and the front part is preformed into a curved shape, and the metal guide wire overcoat is used to be sleeved in the location of the nasotracheal intubation nozzle Socket cap, the front end of the metal guide cable is fixed with an end cap, the head of the end cap is arc-shaped, the tail of the end cap is connected with a traction wire extending along the metal guide cable and passing through the positioning socket cap, and the traction steel wire passes through the positioning One end of the socket cap is connected with a traction operation device, and the curved part of the metal guide rope is provided with a guide ring near the turning point, and the traction steel wire passes through the guide ring, and is driven by the traction steel wire under the guidance of the guide ring. The upper end cap of the metal guide wire moves around the inner arc side of the curved part of the metal guide wire. 2. The nasotracheal intubation guide core according to claim 1, wherein the traction operation device is a retracting device with a one-way locking function to prevent the traction wire from being affected by the elastic force of the metal guide cable. 3. According to the described nasotracheal intubation guide core of claim 2, it is characterized in that: the traction operation device comprises a housing and an adjustment operation wheel, a worm, a worm wheel and a retracting wheel arranged in the housing, and the housing is fixed on On the metal guide cable, the adjustment operation wheel is connected to the worm drive, and the worm and the worm gear are meshed and matched. The worm wheel is installed in the housing through the transmission shaft, and the retracting wheel is installed in the housing through the wheel shaft. The wheel shaft and the transmission shaft are connected through the transmission mechanism. , the traction steel wire is fixed on the take-up wheel. 4 . The nasotracheal intubation guide core according to claim 3 , wherein the worm gear comprises a wheel body, and an axial ring gear is axially extended on the outer circumference of the wheel body. 5. The nasotracheal intubation guide core according to claim 3, characterized in that: the transmission mechanism is a reduction gear pair. 6. According to the described nasal endotracheal intubation guide core according to claim 3, it is characterized in that: the tail of the metal guide wire is provided with a handle, the housing is provided with a central piercing hole, and the housing is pierced through the center The hole is fixedly set on the handle of the metal guide cable, and one end of the housing is provided with a central end hole corresponding to the position of the central piercing hole. The wheel disc is exposed to the housing, and the adjustment operation wheel is arranged coaxially with the handle. 7. According to the described nasal endotracheal intubation guide core according to claim 6, it is characterized in that: the adjustment operation wheel is provided with a central shaft hole for the handle to pass through, and one end of the handle passing through the central shaft hole is provided with The circular plate above the operating wheel that axially shields the adjusting operating wheel. 8 . The nasotracheal intubation guide core according to claim 7 , wherein a scale indicator structure is arranged along the circumference between the operation wheel of the adjustment operation wheel and the circular plate. 9. The nasal endotracheal intubation guide core according to claim 1, characterized in that: the metal guide wire is hollow tubular, and the head of the end cap is provided with a through hole corresponding to the central lumen of the metal guide wire , the central lumen of the metal guide wire is equipped with a hollow hose, the front end of the hollow hose extends to the through hole of the end cap, the tail end of the hollow hose passes through the tail of the metal guide wire, the hollow hose The tail end is connected with an auxiliary medical device, the auxiliary medical device is a carbon dioxide detector or a sputum aspirator, and the tail end of the hollow hose is connected with a carbon dioxide detector or a sputum aspirator or connected with a carbon dioxide detector and a sputum aspirator through a tee. 10 . The nasotracheal intubation guide core according to claim 1 , wherein the metal guide wire is a helical tube formed by extending a metal wire in a helical shape. 11 .