CN215135307U - Guiding inner core device with adjustable tracheal cannula bending angle - Google Patents

Abstract

The utility model discloses a guiding inner core device with adjustable bending angle of a tracheal cannula, which comprises a flexible guiding core tube, wherein the front part of the guiding core tube comprises a bending section, an annular sleeve is fixed on the guiding core tube in front of the bending section, a push-pull sleeve is sleeved on the rear part of the guiding core tube, and an axial chute is arranged on the outer wall of the rear part of the guiding core tube; the push-pull sleeve is guided by the sliding groove; the middle part of the guide core pipe comprises a stay wire channel, the front end of the stay wire is connected with the annular sleeve, the middle part of the stay wire penetrates through the stay wire channel, and the rear end of the stay wire is connected with the push-pull sleeve. The guiding inner core device of the utility model is inserted into the endotracheal tube before the intubation, and the bending degree of the guiding inner core device is adjusted by the push-pull sleeve in the intubation process, so that the bending degree of the endotracheal tube can be changed simultaneously, and the endotracheal tube intubation is facilitated; after the intubation is finished, the guide inner core device is completely pulled out of the endotracheal tube, so that convenience can be provided for subsequent rescue operation.

Description

Guiding inner core device with adjustable tracheal cannula bending angle

Technical Field

The utility model relates to a medical instrument especially relates to a direction inner core device with adjustable trachea cannula bending angle.

Background

The trachea cannula is a method for placing a special trachea catheter into a trachea or a bronchus through an oral cavity or a nasal cavity and a glottis, provides the best conditions for unobstructed respiratory tract, ventilation and oxygen supply, respiratory tract suction and the like, and is an important measure for rescuing patients with respiratory dysfunction. The endotracheal tube needs to be inserted from the patient's glottis. For patients with special anatomical structures (also called difficult airway), the intubation difficulty is increased, and the patients are anesthetized by anesthetic drugs and can not breathe, so that the patients are in life danger, the earlier and timely ventilation of the patients can save the lives of the patients, and the faster the trachea is inserted, the better the trachea is.

The invention of application No. CN01823827.0 discloses an apparatus for rapid endotracheal intubation, comprising: a hollow conduit formed with a distal end configured for insertion into a trachea and an opposite proximal end; a flexible portion of the catheter that is more flexible than surrounding portions of the catheter, the flexible portion being proximal to the distal end of the catheter; a membrane attached to the catheter and covering the flexible portion; a traction mechanism extending from the proximal end of the flexible portion and extending between the flexible portion and the membrane to be connected near the distal end of the flexible portion; and whereby a pulling force applied to the proximal end of the pulling device causes the flexible portion to bend.

The hollow catheter controls the flexible part at the far end to bend through the traction mechanism at the near end, so that the success rate of intubation is improved, but the traction mechanism is arranged on the catheter, so that the weight of accessories on the catheter is increased; after the intubation is finished, the traction mechanism cannot be detached, so that inconvenience is brought to subsequent rescue operation.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a direction inner core device that can be arranged in the endotracheal tube, can control the camber of endotracheal tube during the intubate, can remove after the intubate is accomplished.

In order to solve the technical problem, the utility model adopts the technical scheme that the guide inner core device with the adjustable bending angle of the tracheal intubation comprises a flexible guide core tube, the front part of the guide core tube comprises a bending section, an annular sleeve is fixed in front of the bending section of the guide core tube, a push-pull sleeve is sleeved at the rear part of the guide core tube, and an axial chute is arranged on the outer wall of the rear part of the guide core tube; the push-pull sleeve is guided by the sliding groove; the middle part of the guide core pipe comprises a stay wire channel, the front end of the stay wire is connected with the annular sleeve, the middle part of the stay wire penetrates through the stay wire channel, and the rear end of the stay wire is connected with the push-pull sleeve.

In the guiding inner core device, the front part of the guiding core tube is disconnected in the middle of the bending section and is divided into the front section and the rear section; the bending section comprises a spiral spring, the front part of the spiral spring is tightly sleeved at the rear end of the front section, and the rear part of the spiral spring is tightly sleeved at the front end of the rear section.

In the guiding inner core device, the guiding core pipe is disconnected in the middle of the bending section and is divided into a front section and a rear section; two sides of the rear end of the front section respectively comprise a rear ear plate, and two sides of the front end of the rear section respectively comprise a front ear plate; the two rear ear plates of the front section are respectively hinged with the two front ear plates of the rear section.

In the guiding inner core device, the side walls of the guiding core tube on the two sides of the middle part of the bending section respectively comprise a weakening hole, the guiding core tube is divided into the front section and the rear section by the weakening holes, the upper tube wall connecting the front section and the rear section is arranged above the two weakening holes, and the lower tube wall connecting the front section and the rear section is arranged below the two weakening holes; the middle part of the inner wall of the upper pipe wall comprises a first bending groove which is arranged along the circumferential direction of the inner wall of the upper pipe wall; the middle part of the outer wall of the lower pipe wall comprises a second bending groove which is arranged along the circumferential direction of the outer wall of the lower pipe wall.

In the guiding inner core device, the transverse width of the upper pipe wall is greater than that of the lower pipe wall; the middle part of the upper pipe wall comprises a bending abdicating groove which is longitudinally arranged and is through up and down; the first bending groove and the second bending groove are triangular grooves.

The bending section of the guiding inner core device comprises a silica gel sleeve, the front end of the silica gel sleeve is tightly sleeved at the rear part of the front section, and the rear end of the silica gel sleeve is tightly sleeved at the front part of the rear section.

In the guiding inner core device, the guiding core pipe is disconnected in the middle of the bending section and is divided into a front section and a rear section; the bending section comprises an elastic corrugated pipe, the front part of the elastic corrugated pipe is tightly sleeved at the rear end of the front section, and the rear part of the elastic corrugated pipe is tightly sleeved at the front end of the rear section.

In the guiding inner core device, the bent section is close to the inlet and the outlet at the front end of the stay wire channel and is far away from the annular sleeve; the rear end of the guide core tube comprises a baffle disc.

The guide inner core device comprises a core rod, wherein the core rod penetrates through the guide core tube, the rear end of the core rod comprises a handle exposed outside the guide core tube, and the front end of the core rod comprises an elastic V-shaped clamp; when the handle of the core rod is pushed forwards, the clamping clacks of the V-shaped clamp extend out of the inner hole at the front end of the guide core pipe and are opened; when the guide core tube is pushed forwards or the handle of the core rod is pulled backwards, the inner hole at the front end of the guide core tube tightens the two clamping flaps of the V-shaped clamp, and the two clamping flaps of the V-shaped clamp are closed.

In the guiding inner core device, the inner hole wall of the guiding core tube comprises three convex guiding ribs, the top surfaces of the guiding ribs are cambered surfaces, and the core rod penetrating through the guiding core tube is supported by the guiding ribs; the handle is a pull ring.

The guiding inner core device of the utility model is inserted into the endotracheal tube before the intubation, and the bending degree of the guiding inner core device is adjusted by the push-pull sleeve in the intubation process, so that the bending degree of the endotracheal tube can be changed simultaneously, and the endotracheal tube intubation is facilitated; after the endotracheal tube is inserted into the tube, the guide inner core device is completely pulled out of the endotracheal tube, so that convenience can be provided for subsequent rescue operation.

[ description of the drawings ]

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a perspective view of an endotracheal tube according to embodiment 1 of the present invention.

Fig. 2 is an exploded view of an endotracheal tube according to embodiment 1 of the present invention.

Fig. 3 is a plan view of the front portion of the cannula according to embodiment 1 of the present invention.

Fig. 4 is a perspective view of the front part of the cannula according to embodiment 1 of the present invention.

Fig. 5 is a perspective view of the front part of the core rod of embodiment 1 of the present invention.

Figure 6 is a perspective cross-sectional view of the front portion of an endotracheal tube according to embodiment 1 of the present invention with the core rod retracted.

Fig. 7 is a perspective cross-sectional view of the front portion of the endotracheal tube in accordance with embodiment 1 of the present invention when the core rod is extended.

Fig. 8 is a perspective view showing the front opening of the endotracheal tube being pinched off according to embodiment 1 of the present invention.

Fig. 9 is a perspective partial sectional view showing the front opening of the endotracheal tube being pinched off according to embodiment 1 of the present invention.

Fig. 10 is a perspective view of an endotracheal tube according to embodiment 2 of the present invention.

Fig. 11 is an exploded view of an endotracheal tube according to embodiment 2 of the present invention.

Fig. 12 is a perspective view of the front part of the endotracheal tube according to embodiment 2 of the present invention.

Fig. 13 is a perspective view of the front portion of the endotracheal tube according to embodiment 2 of the present invention from another perspective.

Fig. 14 is a cross-sectional view of a cannula according to embodiment 2 of the present invention.

Fig. 15 is a perspective view of the front part of the cannula according to embodiment 3 of the present invention.

Fig. 16 is a front view of the guide core tube according to embodiment 4 of the present invention.

Fig. 17 is a perspective sectional view of the front part of the guide core tube according to embodiment 4 of the present invention.

Fig. 18 is a perspective view of the rear part of the guide core tube according to embodiment 4 of the present invention.

Fig. 19 is a partial sectional view of the front part of the guide core tube according to embodiment 5 of the present invention.

Fig. 20 is a perspective sectional view of the front part of the guide core tube according to embodiment 5 of the present invention.

Fig. 21 is a perspective sectional view of the front part of the guide core tube according to embodiment 6 of the present invention.

Fig. 22 is a plan view of the bent section of the guide core tube according to embodiment 6 of the present invention.

Fig. 23 is a perspective view of the bent section of the guide core tube according to embodiment 6 of the present invention.

Fig. 24 is a perspective view of another view angle of the bending section of the guide core tube according to embodiment 6 of the present invention.

Fig. 25 is a partial sectional view of the front part of the guide core tube according to embodiment 7 of the present invention.

[ detailed description of the invention ]

The structure of the endotracheal tube of embodiment 1 of the present invention is shown in fig. 1 to 9, and includes an arc-shaped and flexible insertion tube 10 and an arc-shaped and flexible guiding inner core device.

The front part of the cannula 10 is provided with the air sac 11, the rear end of the cannula 10 is provided with the rear connector 12 and the air sac inflating device 13, the inner wall of the cannula 10 is provided with an inflating channel (not shown in the figure), the air sac inflating device 13 comprises an inflating tube 131 and a one-way inflating valve 132, the front end of the inflating tube 131 is connected with the rear end of the inflating channel (not shown in the figure), the rear end of the inflating tube 131 is connected with the one-way inflating valve 132, and the front end of the inflating channel 133 is connected with the air sac 11.

The left and right sides of the front end of the insertion tube 10 each include a through hole 141 penetrating the wall of the insertion tube 10.

The front end of the insertion tube 10 is provided with a V-shaped groove 142 penetrating along the upper and lower diameter directions of the insertion tube 10, the V-shaped groove 142 divides the front end of the insertion tube 10 into two closing pieces 143 which are separated from each other at the left and right, and the through hole 141 is positioned at the rear end of the closing piece 143.

The bottom of the V-shaped groove 142 has a U-shaped relief groove 144. The front of the closure tab 143 is arcuate and the edge of the front of the closure tab 143 is a thinned lip 145.

The guide inner core device can be used as an intubation front end opening and closing mechanism and an intubation front bending control mechanism.

When the guiding inner core device is used as an opening and closing mechanism at the front end of the intubation tube, the guiding inner core device comprises a guiding core tube 20 and a core rod 30, wherein the rear end of the guiding core tube 20 is provided with an operation and control baffle disc 21 with a larger diameter, and medical personnel can control the axial movement of the guiding core tube 20 through the baffle disc 21.

The core rod 30 passes through the inner hole of the guide core tube 20, the guide core tube 20 is inserted into the inner hole of the insertion tube 10 from the rear joint 12, and the front end of the guide core tube 20 is inserted all the way to the front end of the inner hole of the insertion tube 10. The rear end of the core rod 30 is provided with a pull ring 31 exposed outside the guide core tube 20 for controlling the advance and retreat of the core rod 30, and medical staff can control the core rod to move back and forth through the pull ring. The front end of the core rod 30 is provided with an elastic V-shaped clamp 32, and two clamping flaps 321 of the elastic V-shaped clamp 32 are opened at a certain included angle in a free state.

When the pull ring 31 of the core bar 30 is pulled backwards, the two clamping flaps 321 of the V-shaped clamp 32 can be retracted into the inner hole at the front end of the guide core tube 20, when the pull ring 31 of the core bar 30 is pushed forwards, the clamping flaps 321 of the elastic V-shaped clamp 32 extend out of the inner hole at the front end of the guide core tube 20 and are opened, the two clamping flaps 321 respectively penetrate through the through holes 141 on the tube wall of the insertion tube 10 from inside to outside, and the two clamping flaps 321 of the elastic V-shaped clamp 32 extend forwards to the outer sides of the front ends of the two closing flaps 143.

After the two clamping flaps 321 of the elastic V-shaped clamp 32 of the core rod 30 respectively pass through the through hole 141, the guide core tube 20 is pushed forward, and the inner hole at the front end of the guide core tube 20 inwardly tightens the two clamping flaps 321 of the elastic V-shaped clamp 32, so that the two clamping flaps 321 are folded. When the two clamping flaps 321 of the elastic V-shaped clamp 32 are closed, the two clamping flaps 321 clamp the front ends of the two closing pieces 143, so that the front ends of the two closing pieces 143 are closed.

As shown in fig. 8 and 9, the outer surface 146 of the front end of the insertion tube 10 is a tapered surface, and the tapered surface with a smaller front end and a larger rear end can reduce the size of the front end of the insertion tube 10, thereby facilitating smooth insertion of the endotracheal tube.

The utility model discloses 10 front end mouths of tubes department's pipe wall of intubate of embodiment 1 is semicircle convex arc profile, and the downside is semicircle profile root on the mouth of pipe for the left and right sides pipe wall of the mouth of pipe of intubate 10 is semicircle convex arc structure. At orificial upper and lower side position, the root position that intersects of the semicircle convex arc pipe wall of left and right sides lateral wall, open the U-shaped recess of stepping down that has certain degree of depth towards the back along the axial on the pipe wall, receive the extrusion inwards in the side direction about 10 mouths of pipe of intubate department, when becoming vertical planar flat type, the recess of stepping down can play and prevent 10 mouths of pipe root pipe walls of intubate crowded material, and 10 mouths of pipe of intubate department of being convenient for can extrude smoothly for flat form. At the most front end protruding arc limit department of the semicircle protruding arc pipe wall port of the left and right sides of 10 pipe orifices departments of intubate, there is the lip limit of arc surface chamfer for the pipe wall of lip limit department is the arc attenuate, can make front end mouth of pipe position when pressing from both sides flat, the mouth of pipe port department that presss from both sides flat state can whole thickness attenuate from back to front gradually, can reduce to thinnest thickness at most front end. Make when pressing from both sides flat state, the semicircle convex circular arc profile cooperation thickness of intubate 10 anterior segment structure of attenuate gradually forward can be convenient for let in the glottis of oval mouth shape.

The utility model discloses embodiment 2 endotracheal tube's structure is shown in fig. 10 to 14, and on embodiment 1's basis, embodiment 2 intubate 10's rear end is equipped with injection device 15 and inhales phlegm device 16, and injection ring 154 is equipped with to intubate 10's front portion, and injection ring 154 is located the place ahead of gasbag 11, and the medical personnel of being convenient for docks the syringe respectively at the rear portion, inhales operations such as phlegm, injection, gasbag inflation.

The inner wall of the cannula 10 is provided with an inflation channel 133, a sputum suction channel 163 and a medicine injection channel 153, the balloon inflation device 13 comprises an inflation tube 131 and a one-way inflation valve 132, the front end of the inflation tube 131 is connected with the rear end of the inflation channel 133, the rear end of the inflation tube 131 is connected with the one-way inflation valve 132, and the front end of the inflation channel 133 is communicated with the balloon 11. The medicine injection device 15 comprises a medicine injection tube 151 and a medicine injection connector 152, wherein the front end of the medicine injection tube 151 is connected with the rear end of a medicine injection channel 153, the rear end of the medicine injection tube 151 is connected with the medicine injection connector 152, and the front end of the medicine injection channel 153 is connected with a medicine injection ring 154. The sputum aspirator 16 includes a sputum aspirator tube 161 and a sputum aspirator adapter 162, and the side wall of the front portion of the cannula 10 includes a sputum aspirating hole 164 that opens outward. The front end of the sputum suction tube 161 is connected with the rear end of the sputum suction channel 163, the rear end of the sputum suction tube 161 is connected with the sputum suction joint 162, and the front end of the sputum suction channel 163 is connected with the sputum suction hole 164.

The injection ring 154 includes a plurality of radial through holes 155, and the radial through holes 155 are uniformly distributed along the circumferential direction of the injection ring 154. The inner wall of the injection ring 154 has an annular groove (not shown), and the radial through-hole 155 communicates with the annular groove. The cannula 10 has a drug outlet (not shown) at the front, which is located in front of the balloon 11 and communicates with the annular groove of the drug injection ring 154. The medicine outlet hole is communicated with the front end of the medicine injection channel 153, so that the medicine liquid can be injected into the annular groove of the medicine injection ring 154 and injected into the body of the patient through the plurality of radial through holes 155, and the medicine liquid slow-release treatment effect is achieved on the patient.

The insertion tube 10 is an arc-shaped bent tube with two ends bent downward, and the axis of the arc-shaped bent tube is arranged on a vertical plane. The front part of the insertion tube 10 is provided with a telescopic folding section 17, and the telescopic folding section 17 is positioned at the rear part of the air sac 11 and arranged at the lower part of the insertion tube 10.

Flexible folding section 17 has certain length along intubate 10 axial direction, flexible folding section 17 comprises a plurality of front and back align to grid's wave closed angle inflection formula structure, make intubate 10 be the wave accordion type at this position section pipe wall, flexible folding section 17 has weakened the rigidity of intubate 10, the anterior part of intubate 10 of being convenient for just can be crooked under less bending force effect, and can be crooked to bigger radian of buckling, the too hard and too little condition of bending angle of current intubate 10 bending can not appear, lead to can not effectually inserting to patient's acoustic door at the in-process of carrying out trachea cannula 10.

The front part of the baffle disc 21 of the guide core tube 20 is provided with a three-plate limiting seat 211, and the limiting seat 211 plays a role of limiting and blocking the guide core tube 20 and the core rod 30 in the insertion tube 10 so as to prevent the core rod 30 from extending out of the front end of the insertion tube 10. The three-plate limiting seat 211 is of a three-vertical-plate structure with uniformly distributed circumference, and can be inserted into an inner hole of the rear connector 12 of the insertion tube 10 to play a fixing role, and the baffle disc 21 behind the three-plate limiting seat 211 plays a role in limiting the position of a gear.

The endotracheal tube according to embodiment 3 of the present invention is configured as shown in fig. 15, and is different from embodiment 1 only in that the front end 147 of the insertion tube 10 is an inclined surface, and the inclined surface 147 is bilaterally symmetrical. The tip of the oblique inclined port is located at the outer bent end of the insertion tube 10, and compared with the tip of the existing insertion tube inclined port structure which is located at the left side end and the right side end of the insertion tube, the insertion tube 10 can be inserted into the glottis of a patient conveniently.

The utility model discloses the endotracheal tube of above embodiment is through the closure of two clamp lamellas of the axial displacement control core bar 30 elasticity V clamp 32 of direction core pipe 20 to accomplish the operation process that the port presss from both sides the flat before the intubate 10, simple structure, the effect is stable, easy and simple to handle and quick, can make the front end of intubate 10 kick-back again for the circular mouth of pipe after the front end of intubate 10 lets in the glottis back withdrawal core bar 30, can not influence the follow-up operation of intubate 10.

The following embodiments 4 to 7 of the present invention are directed to a guide core tube of an inner core device, which can be used in any of the endotracheal tubes of embodiments 1 to 3, and the guide core tube 20 of embodiments 4 to 7 can be used as a front bending control mechanism of the insertion tube 10 to guide and drive the bending of the insertion tube 10.

The embodiment 4 of the present invention provides a flexible guiding core tube structure of a guiding core device as shown in fig. 16 to 18, wherein one section of the front portion of the guiding core tube 20 is a bending section 20A, and the rear end of the guiding core tube 20 has an operation and control catch tray 21. An annular sleeve 221 is fixed in front of the bent section 20A of the guide core tube 20, a push-pull sleeve 222 is sleeved at the rear part of the guide core tube 20, and an axial sliding groove 223 is formed in the outer wall of the rear part of the guide core tube 20. The push-pull sleeve 222 and the sliding groove 223 are guided by a sliding key. The middle part of the guide core tube 20 is provided with an axial pull wire channel 224, the front end of the pull wire 225 is connected with the annular sleeve 221, the middle part of the pull wire 225 passes through the pull wire channel 224, and the rear end of the pull wire 225 is connected with the push-pull sleeve 222.

The bending section 20A is close to the inlet and outlet at the front end of the stay wire channel 224 and is far away from the annular sleeve 221, so that the elastic structure of the bending section 20A can control the steering of the front section of the guide core tube 20, the elastic structure of the bending section 20A serves as a hinge point, a labor-saving lever is formed for the stay wire 225, and the front section of the guide core tube 20 can be driven to rotate by a large angle with small force.

The front portion of the guide core tube 20 is broken at the middle of the curved section 20A, and divided into a front section 20B and a rear section 20C. The curved section 20A includes a coil spring 226, with the front portion of the coil spring 226 fitting closely over the rear end of the front section 20B and the rear portion of the coil spring 226 fitting closely over the front end of the rear section 20C. The open position of the guide core tube 20 and the entrance and exit of the coil spring 226 near the front end of the pull wire passage 224 are away from the annular sleeve 221.

The coil spring 226 has an elastic deformation characteristic, and when no external force acts on the guide core tube 20, the elastic force of the coil spring 226 can support the front section 20B of the guide core tube 20, so that when no external force acts on the guide core tube 20, the axial direction of the whole combination of the front section 20B of the guide core tube 20 and the rear section 20C of the guide core tube 20 is consistent with the initial direction of the insertion tube 10. When no external force is applied, the guide core tube 20 will not affect the bending degree of the insertion tube 10 after being introduced into the insertion tube 10. When the pulling wire 225 is pulled, the pulling wire 225 pulls back the front end of the guide core tube 20 at the fixing sleeve 221, and the front section 20B of the guide core tube 20 drives the coil spring 226 to perform arc-shaped elastic bending, so that the included angle between the front section 20B of the guide core tube 20 and the rear end of the guide core tube 20 is reduced. When the tension of the pulling wire 225 is removed, the coil spring 226 is restored to the initial state by the elastic restoring force, and the angle between the front section 20B and the rear end 20C of the guide core tube 20 is also restored to the initial state. The spring has the elastic recovery characteristic, and in the crooked in-process of atress, can the homogeneous bend, when not receiving the pulling force, can elastic recovery for the crooked of intubate can reset, can make intubate adjust the degree of curvature and insert to the glottis, can guarantee follow-up operation smoothly again.

As shown in fig. 18, the inner hole wall of the guide core tube 20 includes three convex guide ribs 227, the top surface of the guide ribs 227 is a curved surface, and the core rod 30 passing through the guide core tube 20 is supported by the guide ribs 227. The semi-circular convex structure of the guiding rib 227 can reduce the contact surface between the inner hole of the guiding core tube 20 and the core rod 30, and reduce the friction force of the core rod 30 during moving forward and backward.

The structure of the flexible guide core tube of the inner core guiding device in embodiment 5 of the present invention is shown in fig. 19 to 20, and is different from the structure of the bending section 20A in embodiment 4.

The guide core tube 20 is broken at the middle of the curved section 20A, and divided into a front section 20B and a rear section 20C. Both sides of the rear end of the front section 20B each include a rear ear plate 231 and both sides of the front end of the rear section 20C each include a front ear plate 232. The two rear ear plates 231 of the front section 20B are hinged to the two front ear plates 232 of the rear section 20C, respectively. The bending section 20A has a silicone sleeve 233, and the front end of the silicone sleeve 233 is tightly fitted to the rear portion of the front section 20B, and the rear end is tightly fitted to the front portion of the rear section 20C.

The front section 20B and the rear section 20C of the guide core tube 20 are hinged to each other through a rear lug plate 231 and a front lug plate 232, the rear lug plate 231 and the front lug plate 232 are arranged at positions close to two sides, the influence on the through core rod 30 inside the guide core tube 20 is avoided, and when the relative rotation included angle of the front section and the rear section of the guide core tube 20 changes, the guide core tube is completed through a hinge between the rear lug plate 231 and the front lug plate 232. The front section 20B and the rear section 20C of the guide core tube 20 are sleeved by the silica gel sleeve 233, the silica gel sleeve 233 is used as an elastic structure of the bending section 20A, when no external force acts, the silica gel sleeve 233 can support the front section 20B of the guide core tube 20, and the axial direction of the whole combination of the front section 20B and the rear section 20C of the guide core tube 20 is consistent with the initial direction of the insertion tube 10. Because the silicone sleeve 233 has a lateral elastic deformation characteristic, under the pulling-back action of the pull wire 225, the front section 20B of the guide core tube 20 rotates inward by using the ear plate hinge shaft as a rotation center, so that the front section 20B of the guide core tube 20 can drive the front section of the insertion tube 10 to bend and rotate inward. When the pulling wire 225 is released, the front section 20B of the guide core tube 20 is rotated outward to the initial state by the elastic recovery of the silicone sleeve 233. The silica gel sleeve 233 can improve the bending times of the guide core tube, increase the stability of the structure and prolong the service life of the guide core tube

The structure of the flexible guide core tube of the inner core guide device according to embodiment 6 of the present invention is different from that of the bent section 20A according to embodiment 4, as shown in fig. 21 to 24.

The guide core tube 20 includes a weakening hole 241 on each of the side walls of the middle portion of the curved section 20A, the weakening hole 241 divides the guide core tube 20 into a front section 20B and a rear section 20C, an upper tube wall 242 connecting the front section 20B and the rear section 20C is disposed above the two weakening holes 241, and a lower tube wall 243 connecting the front section 20B and the rear section 20C is disposed below the two weakening holes 241. The middle portion of the inner wall of the upper tube wall 242 includes a first bending groove 244, and the first bending groove 244 is arranged along the circumference of the inner wall of the upper tube wall 242. The middle portion of the outer wall of the lower tube wall 243 includes a second bending groove 245, and the second bending groove 245 is arranged along the circumferential direction of the outer wall of the lower tube wall 243.

Wherein the lateral width of the upper tubular wall 242 is greater than the lateral width of the lower tubular wall 243. The middle portion of the upper tube wall 242 includes longitudinally disposed, through-going bend relief slots 246. The first and second bending grooves 244 and 245 are triangular grooves.

The bending section 20A includes a silicone sleeve 233, the front end of the silicone sleeve 233 tightly covers the rear portion of the front section 20B, and the rear end tightly covers the front portion of the rear section 20C.

The front section 20B and the rear section 20C of the guide core tube 20 are integrally connected to the lower tube wall 243 via the upper tube wall 242, the upper tube wall 242 and the lower tube wall 243 have a thickness and a curvature equal to those of the tube wall of the guide core tube 20, and the outer upper tube wall 242 has a width greater than that of the inner lower tube wall 243. A first bending groove 244 and a second bending groove 245 are respectively arranged at the transverse middle position of the inner side surface of the upper pipe wall 242 and the transverse middle position of the outer side surface of the lower pipe wall 243, the first bending groove 244 traverses the left end and the right end of the upper pipe wall 242, and the second bending groove 245 traverses the left end and the right end of the lower pipe wall 243. The bevel structure section is a concave inward right-angle, and when the pull wire 225 pulls back the front section 20B of the guide core tube 20, the bevel structure section can be bent inward through the first bending groove 244 of the upper tube wall 242 and the second bending groove 245 of the lower tube wall 243, so that the front section 20B of the guide core tube 20 is bent inward, and the front section 20B of the insertion tube 10 is driven to be bent inward. The middle of the upper pipe wall 242 is provided with an axially-oriented bending yielding groove 246, so that the upper pipe wall 242 can be conveniently bent and deformed integrally in the bending process, and the wider arc-shaped sheet structure can be prevented from being bent transversely.

The structure of the flexible guide core tube 20 according to embodiment 7 of the present invention is shown in fig. 25, and is different from the structure of the bent section 20A according to embodiment 4.

The guide core tube 20 is broken at the middle of the curved section 20A, and divided into a front section 20B and a rear section 20C. The curved section 20A has an elastic bellows 251, a front portion of the elastic bellows 251 is closely fitted to a rear end of the front section 20B, and a rear portion of the elastic bellows 251 is closely fitted to a front end of the rear section 20C.

The elastic corrugated pipe 251 can be flexibly bent by depending on a folding structure of the elastic corrugated pipe 251, and can support the front section 20B of the guide core pipe 20 without external force, so that the whole axial direction of the guide core pipe 20 is consistent with the initial direction of the insertion pipe 10, and the elastic corrugated pipe can be reset through the elastic recovery characteristic after bending deformation. When the elasticity of the elastic corrugated pipe 251 is insufficient, a silica gel sleeve can be sleeved outside the elastic corrugated pipe for rebound resetting. Embodiment 4 has simple structure, low cost and stable effect.

When needs utilize the utility model discloses when the direction inner core device of above embodiment 4 to embodiment 7 carries out trachea cannula operation to the patient, insert the intubate 10 earlier with the direction inner core device, along the push-and-pull cover 222 of the backward pulling direction core pipe 20 of axial, push-and-pull cover 222 drives and acts as go-between 225 rearward movement, act as go-between 225 pulling direction core pipe anterior segment 20B makes it for direction core pipe posterior segment 20C anticlockwise rotation, direction core pipe anterior segment 20B drives the same anticlockwise bending of intubate 10 anterior segment through intubate 10 inner wall in the pivoted in-process. The orifice of the forward section 20B of the cannula 10 can be aligned toward the glottis when the forward section of the cannula 10 is bent to an angle of about 120 deg. to the rearward section. The core bar 30 of direction inner core device is promoted to the axial forward, the clamp lamella 321 of core bar 30 front end breaks away from direction core pipe 20 and gets clamp lamella 321 to open under the elastic action, control two clamp lamellas 321 and insert respectively to the outside of the through-hole 141 department of side pipe wall about the intubate 10 front end, axial promotion direction core pipe 20 forward, direction core pipe 20 front end port makes its contained angle reduce to clamp lamella 321 bundle cover, clamp lamella 321 can press from both sides flat to intubate 10 front end through both sides through-hole from the ability, the semicircle arch mouth of pipe structure of flat form mouth of pipe cooperation front end, thereby pass through oval mouthful glottis smoothly.

After the intubation operation is completed, the guide core tube 20 is pulled backwards along the axial direction, the clamping flap 321 is released from the front end port of the guide core tube 20, the clamping flap 321 is expanded and restored under the action of the self elasticity, and the front end of the intubation tube 10 is restored to the original circular state. Pulling the pull ring 31 of the mandrel 30 backward, the clamping flap 321 at the front end of the mandrel 30 retracts into the inner hole of the insertion tube 10, and then retracts into the inner hole at the front end of the guide core tube 20. At this point, the guide core device is withdrawn from the cannula 10 and a subsequent rescue operation can be performed.

Claims (10)

1. A guiding inner core device with an adjustable tracheal intubation bending angle comprises a flexible guiding core tube, and is characterized in that the front part of the guiding core tube comprises a bending section, an annular sleeve is fixed in front of the bending section of the guiding core tube, a push-pull sleeve is sleeved at the rear part of the guiding core tube, and an axial sliding groove is formed in the outer wall of the rear part of the guiding core tube; the push-pull sleeve is guided by the sliding groove; the middle part of the guide core pipe comprises a stay wire channel, the front end of the stay wire is connected with the annular sleeve, the middle part of the stay wire penetrates through the stay wire channel, and the rear end of the stay wire is connected with the push-pull sleeve.

2. The guiding core device according to claim 1, wherein the front portion of the guiding core tube is broken at the middle of the curved section to be divided into a front section and a rear section; the bending section comprises a spiral spring, the front part of the spiral spring is tightly sleeved at the rear end of the front section, and the rear part of the spiral spring is tightly sleeved at the front end of the rear section.

3. The guiding core device according to claim 1, wherein the guiding core tube is broken at the middle of the curved section and divided into a front section and a rear section; two sides of the rear end of the front section respectively comprise a rear ear plate, and two sides of the front end of the rear section respectively comprise a front ear plate; the two rear ear plates of the front section are respectively hinged with the two front ear plates of the rear section.

4. The guiding core device according to claim 1, wherein the side walls of the guiding core tube on both sides of the middle portion of the curved section each include a weakening hole dividing the guiding core tube into a front section and a rear section, an upper tube wall connecting the front section and the rear section is above the two weakening holes, and a lower tube wall connecting the front section and the rear section is below the two weakening holes; the middle part of the inner wall of the upper pipe wall comprises a first bending groove which is arranged along the circumferential direction of the inner wall of the upper pipe wall; the middle part of the outer wall of the lower pipe wall comprises a second bending groove which is arranged along the circumferential direction of the outer wall of the lower pipe wall.

5. The device of claim 1, wherein the upper tubular wall has a transverse width greater than a transverse width of the lower tubular wall; the middle part of the upper pipe wall comprises a bending abdicating groove which is longitudinally arranged and is through up and down; the first bending groove and the second bending groove are triangular grooves.

6. The device of claim 3 or 4, wherein the curved section comprises a silicone sleeve having a front end that fits closely behind the front section and a rear end that fits closely in front of the rear section.

7. The guiding core device according to claim 1, wherein the guiding core tube is broken at the middle of the curved section and divided into a front section and a rear section; the bending section comprises an elastic corrugated pipe, the front part of the elastic corrugated pipe is tightly sleeved at the rear end of the front section, and the rear part of the elastic corrugated pipe is tightly sleeved at the front end of the rear section.

8. The device of claim 1, wherein the curved segment is located proximate to the entrance/exit at the front end of the pull wire passage, distal from the annular collar; the rear end of the guide core tube comprises a baffle disc.

9. The guide core device according to claim 1, comprising a core rod passing through the guide core tube, a rear end of the core rod including a handle exposed outside the guide core tube, a front end of the core rod including an elastic V-clip; when the handle of the core rod is pushed forwards, the clamping clacks of the V-shaped clamp extend out of the inner hole at the front end of the guide core pipe and are opened; when the guide core tube is pushed forwards or the handle of the core rod is pulled backwards, the inner hole at the front end of the guide core tube tightens the two clamping flaps of the V-shaped clamp, and the two clamping flaps of the V-shaped clamp are closed.

10. The guide core device according to claim 9, wherein the inner hole wall of the guide core tube comprises three convex guide ribs, the top surfaces of the guide ribs are cambered surfaces, and the core rod passing through the guide core tube is supported by the guide ribs; the handle is a pull ring.

Images