CN108653891B

CN108653891B - Trachea cannula guide core and trachea cannula subassembly

Info

Publication number: CN108653891B
Application number: CN201810565202.9A
Authority: CN
Inventors: 徐堃; 徐锁全
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-04
Filing date: 2018-06-04
Publication date: 2020-09-15
Anticipated expiration: 2038-06-04
Also published as: CN108653891A

Abstract

The invention relates to the technical field of medical instruments, and provides a novel tracheal intubation component of a tracheal intubation guide core. The trachea cannula guide core comprises a core column and a probe, the probe is arranged at one end of the core column, and the probe is of a reticular semi-arc surface structure or a reticular conical surface structure which is formed by a plurality of first ribs in a surrounding mode. The reticular arc surface structure or the reticular conical surface structure has stronger penetrating power and lubrication, so the reticular arc surface structure or the reticular conical surface structure can be inserted into the trachea more smoothly during intubation, and the arc surface structure has no edges and corners and does not damage the wall tissues of the trachea; because the reticular arc surface structure or the reticular conical surface structure is a reticular structure and has a larger ventilation area, the breathing of the patient is not influenced during the intubation. When the tracheal intubation guide core is applied to the tracheal intubation, a probe of the tracheal intubation guide core can more easily pass through the narrow throat part, airway ventilation is established in time, and continuous damage to throat tissues in the operation process of the tracheal intubation is avoided.

Description

Trachea cannula guide core and trachea cannula subassembly

Technical Field

The invention relates to the technical field of medical instruments, in particular to a guide core of an endotracheal tube and an endotracheal tube component.

Background

The trachea intubation is an important basic technical skill in the work of emergency medicine, critical medicine, anesthesia medicine and the like, and has very important significance for reconstructing a respiratory channel, carrying out effective manual or mechanical ventilation, preventing anoxia and carbon dioxide retention, removing respiratory tract secretion or foreign matters, administrating in an airway, safely transporting, ensuring that rescue is successful, reducing the fatality rate and improving prognosis.

The tracheal intubation technique is closely related to other clinical subjects, and unexpected disease changes can occur at any time, so each medical staff is required to be skilled to master the technique, but the technique is difficult to realize in practical work, and even though the tracheal intubation technique is trained by related techniques, because the operation opportunities are few in practical work, the material of the tracheal intubation is difficult, the tracheal intubation becomes a determining factor for the survival and the failure of partial critical rescue, and many special cases: for example, edema of the larynx and obstruction of the larynx are not obvious even for experts with abundant experience and skilled skills.

The traditional trachea cannula is relatively soft as a cannula, the insertion end is a bevel of about 45 degrees, the tail end is connected with an oxygen supply device, and the use of the trachea cannula does not emphasize the use of a guide core and is not specified and designed. The existing guide core is a slender guide wire, and in order to avoid the guide core from damaging tissues during operation, the top end of the guide core cannot exceed an insertion end opening of the trachea cannula; because the insertion end of the existing trachea cannula is relatively soft, the penetrating power is weak; and because the inclined plane of the insertion end of the intubation tube is sharp, the mucous membrane tissue of the throat part is easily damaged during intubation, and local edema is aggravated, so that the intubation difficulty is higher, and the intubation success rate is further reduced.

Disclosure of Invention

The invention aims to provide a guide core of an endotracheal tube and an endotracheal tube component, and aims to solve the problems of weak penetrating power and sharp top end of the conventional endotracheal tube. Will trachea cannula guide core or trachea cannula subassembly are applied to in the trachea cannula art, do benefit to in time to establish the air flue, make trachea cannula swift effective, reduce vice damage, improve the rescue success rate.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a trachea cannula guide core, its characterized in that includes stem and probe, the probe set up in the one end of stem, the probe is netted semi-circular arc surface structure or netted circular conical surface structure that is enclosed by a plurality of first ribs.

In the technical scheme, on one hand, the reticular arc surface structure or the reticular conical surface structure has stronger penetrating power and lubrication degree, so that the reticular arc surface structure or the reticular conical surface structure can be inserted into the trachea more smoothly during intubation, and the arc surface structure has no edges and corners and does not damage the wall tissues of the trachea; on the other hand, the reticular arc surface structure or the reticular conical surface structure is a reticular structure and has a large ventilation area, so that the breathing of the patient is not influenced during intubation.

Furthermore, the core column is a cylinder formed by a plurality of second ribs which are parallel to each other and surrounded, and the cylinder has a radian of 110-130 degrees; a plurality of rib rings are further sequentially arranged along the length direction of the column body and used for fixing the second ribs. On one hand, a cylinder formed by mutually parallel ribs has a certain outer diameter, the specific outer diameter of the cylinder can be determined according to the corresponding inner diameter of the tracheal cannula, and the outer diameter of the cylinder is matched with the corresponding inner diameter of the tracheal cannula, so that the phenomenon that the guide core of the tracheal cannula is small and the tracheal cannula is shaken and unstable during operation of the tracheal cannula is avoided; on the other hand, the second ribs are particularly slender and have excellent bending performance and toughness, and a pipe body formed by the parallel arrangement of the plurality of second ribs also has good bending performance and toughness, so that the auxiliary insertion of the tracheal cannula in an oral cavity (or a nasal cavity), a glottis and a tracheal passage with complex bending is facilitated.

Furthermore, one side in the cylinder is provided with a plurality of one-way teeth and a closed loop along length direction, the closed loop encloses a plurality of one-way teeth, one side relative to one-way teeth in the cylinder articulates there is a support ring, the support ring with two rings of closed loop are detained mutually, when the cylinder is crooked, the support ring can fall into between the one-way teeth and block. During pipe inserting, the support ring falls into the space between the one-way teeth and is clamped, so that the second rib on the ventral side is bent, and the pipe body is kept in a bent state; after the intubation succeeds, the support ring is separated from the one-way teeth, so that the second rib on the ventral side becomes straight, the tracheal intubation guide core is convenient to pull out from the tracheal intubation, and the support ring is separated from the one-way teeth support ring to be lapped on the closed ring.

Furthermore, the tail end fixing device comprises a cover body and buckling lugs hinged to two sides of the cover body. After trachea cannula guide core inserts trachea cannula, the lid is detained trachea cannula's outer end interface, and it is fixed with the outside proud ear structure of the external port of trachea cannula to detain the ear, has guaranteed that trachea cannula guide core can neither excessively see through trachea cannula, and when trachea cannula guide core probe front end met the resistance, intubate guide core can not the withdrawal simultaneously.

Preferably, the second ribs are medical stainless steel wire bars or medical PV materials. The steel wire strips are selected, so that the surface is smooth, and when a net-shaped arc surface structure or a net-shaped conical surface structure formed by the steel wire strips is in contact with the inner wall tissue of the trachea, the injury to the tissue is extremely small. The PV material has the advantages that the plastic strip has excellent elastic deformation characteristic, can still well recover the original shape after being bent repeatedly in any direction, and is not easy to generate permanent plastic deformation.

In another aspect, an embodiment of the present invention further provides an endotracheal tube assembly, including an endotracheal tube and the endotracheal tube guide core provided in any of the above technical solutions.

In this technical scheme, with trachea cannula and aforementioned trachea cannula guide core combination to form trachea cannula subassembly, will trachea cannula subassembly is applied to in the trachea cannula art, can solve the problem that proposes in the background art.

Preferably, the length of the guide core of the tracheal cannula is greater than that of the tracheal cannula, and the greater length is equal to that of the probe. Ensure that the guide core of the tracheal cannula can not excessively extend out of the tracheal cannula and is convenient for the insertion and the pull-out of the guide core of the tracheal cannula.

Preferably, the insertion end of the tracheal cannula is a round flat section. In the improved technical scheme, the section of the insertion end of the tracheal cannula is limited to be the flat section, and compared with the existing inclined section, the flat section has stronger mechanical property and rigidity, and can not cause eversion or inversion due to contact with the trachea assembly in the intubation process.

Preferably, the wall thickness of the insertion end of the endotracheal tube becomes thicker gradually from the end portion to the rear. In this improvement technical scheme, through the aforesaid limited, make the wall thickness of plain end cross-section department thinner, its texture is softer, during the intubate, when with the contact of endotracheal wall tissue, can further reduce the risk of endotracheal wall tissue damage.

Compared with the prior art, the invention has the following beneficial effects:

1. the reticular arc surface structure or the reticular conical surface structure has stronger penetrating power and lubrication, so the reticular arc surface structure or the reticular conical surface structure can be inserted into the trachea more smoothly during intubation, and the arc surface structure has no edges and corners and does not damage the wall tissues of the trachea.

2. Because the reticular arc surface structure or the reticular conical surface structure is a reticular structure and has a larger ventilation area, the breathing of the patient is not influenced during the intubation.

3. The cylinder that is enclosed by a plurality of ribs are parallel to each other has certain external diameter, the concrete external diameter of cylinder can be confirmed according to corresponding trachea cannula internal diameter, and the external diameter of cylinder and corresponding trachea cannula's internal diameter coincide, avoid the intubate to guide the core little, produce when implementing the trachea cannula art operation and rock, unstable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other relevant drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic view showing the structure of a guide core provided in example 1.

Fig. 2 is a schematic structural view of the probe described in embodiment 1.

Fig. 3(a) is a schematic view showing the structure of the one-way teeth, the closed loop and the support ring when the guide core described in embodiment 1 is bent.

Fig. 3(b) is a schematic structural view of the guide core straight one-way teeth, the closed loop and the support ring in embodiment 1.

Fig. 4 is a schematic structural view of the tail end fixing device according to embodiment 1.

Fig. 5 is a schematic structural view of the endotracheal tube assembly provided in example 2.

Fig. 6 is a schematic sectional view of the head end of the endotracheal tube described in example 2.

The reference numbers in the figures illustrate:

10-core column; 11-second ribs; 12-tendon ring; 13-one-way teeth; 14-a support ring; 15-closed loop; 20-a probe; 21-a first rib; 30-tail end fixing device; 31-a cover body; 32-a buckle lug; 40-tracheal intubation; 50-a linker.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without inventive step, are within the scope of the invention.

Example 1:

referring to fig. 1 and 2, the present embodiment provides an endotracheal intubation guide core. The guide core comprises a core column 10 and a probe 20, the probe 20 is arranged at one end of the core column 10, and the probe 20 is a reticular semi-circular arc surface structure or a reticular conical surface structure surrounded by a plurality of first ribs 21. The probe 20 shown in fig. 2 has a net-shaped conical surface structure, a plurality of first ribs 21 are radial, and the top of the conical surface structure is rounded, so that the tracheal wall tissue is prevented from being damaged during intubation.

When the device is applied to the tracheal intubation, the device is firstly inserted into the tracheal intubation, the probe 20 extends out of the end part of the tracheal intubation, and then the tracheal intubation and the guide core are integrally and slowly and accurately inserted into the trachea of a human body. The reticular arc surface structure or the reticular conical surface structure has stronger penetrating power and lubrication, so the reticular arc surface structure or the reticular conical surface structure can be inserted into the trachea more smoothly during intubation, and the arc surface structure has no edges and corners and does not damage the wall tissues of the trachea. In addition, the reticular arc surface structure or the reticular conical surface structure is a reticular structure and has a large ventilation area, so that the breathing of the patient is not influenced during intubation. It should be understood that the top of the reticular conical surface structure should be designed to be smooth and without sharp points, and the connecting transition between the reticular conical surface structure and the small stem 10 should also be smooth and without edges and corners.

Based on the above-mentioned guide core, the present embodiment will provide some examples of specific embodiments, and the examples can be combined with each other on the premise of not conflicting with each other. It should be understood that any combination of the examples to form a new guide core is intended to fall within the scope of the present invention.

For example, please refer to fig. 1, the stem 10 is a cylinder formed by a plurality of second ribs 11 parallel to each other, and the cylinder has a radian of 110 to 130 degrees; a plurality of rib rings 12 are further sequentially arranged along the length direction of the column body, and the rib rings 12 are used for fixing the second ribs 11. On one hand, a cylinder formed by mutually parallel ribs has a certain outer diameter, the specific outer diameter of the cylinder can be determined according to the corresponding inner diameter of the tracheal cannula, and the outer diameter of the cylinder is matched with the corresponding inner diameter of the tracheal cannula, so that the phenomenon that the guide core of the tracheal cannula is small and the tracheal cannula is shaken and unstable during operation of the tracheal cannula is avoided; on the other hand, the second ribs 11 are particularly slender and have excellent bending performance and toughness, and a pipe body formed by the parallel arrangement of the plurality of second ribs 11 also has good bending performance and toughness, so that the auxiliary insertion of the tracheal cannula in the oral cavity (or nasal cavity), glottis and tracheal passage with complex bending is facilitated. Wherein the number of the second ribs 11 is preferably 3 to 4; the shape of the rib ring 12 is preferably circular, the diameter is preferably 2.5-8.5 mm, the diameter is more matched with the inner diameter of the conventional common tracheal cannula, the inner diameter of the conventional smallest tracheal cannula for infants is 2.5mm, and the inner diameter of the largest tracheal cannula for adult men is 8.5 mm; the arc is preferably 120 °.

For example, referring to fig. 3(a) and 3(b), a plurality of unidirectional teeth 13 and a closed loop 15 are arranged on one side in the cylinder along the length direction, the closed loop 15 surrounds the plurality of unidirectional teeth 13, a support ring 14 is hinged on one side of the cylinder opposite to the unidirectional teeth 13, the support ring 14 is buckled with the two loops of the closed loop 15, and when the cylinder is bent, the support ring 14 can fall between the unidirectional teeth 13 and be clamped. During intubation, said support ring 14 is jammed between the unidirectional teeth 13, said support ring 14 supporting the unidirectional teeth 13, bending the ventral second ribs 11 and during intubation the probe 20 encounters resistance that remains unchanged. After successful intubation, the radian is slightly reduced, the support ring 14 naturally falls off from the space between the one-way teeth 13, and the ventral ribs are straightened, so that the guide core can be conveniently pulled out of the tracheal intubation. The support ring 14 will ride on the closed loop 15 after falling out from between the one-way teeth 13.

For example, referring to fig. 4, the guiding core for endotracheal intubation further includes a tail end fixing device 30, and the tail end fixing device 30 includes a cover 31 and fastening lugs 32 hinged to two sides of the cover 31. The cover 31 may be formed by bending and expanding a plurality of second ribs 11 of the stem 10 outward, and the cover 31 and the stem 10 are integrally formed. The cap 31 may be independent of the stem 10, and the cap 31 may be fixedly connected to the stem 10. After the guiding core is inserted into the endotracheal tube 40, the cover 31 covers the connector 50 at the tail end of the endotracheal tube 40, and the fastening lugs 32 are fastened to two sides of the outer flange of the connector 50, respectively, so as to fix the tail end of the guiding core and the tail end of the endotracheal tube 40 to each other, as shown in fig. 5, wherein the connector 50 is a connector 50 for connecting the endotracheal tube 40 to an oxygen therapy device. By providing the rear end fixing device 30 to relatively fix the guide core and the trachea cannula 40, not only can the relative shaking between the guide core and the trachea cannula 40 be further reduced, but also the guide core and the trachea cannula 40 can be prevented from sliding in the radial direction during the cannula, resulting in the probe 20 of the guide core retreating backward or falling forward.

For example, the second ribs 11 are made of medical stainless steel wire or medical PV material. The steel wire strips are selected, so that the surface is smooth, and when a net-shaped arc surface structure or a net-shaped conical surface structure formed by the steel wire strips is in contact with the inner wall tissue of the trachea, the injury to the tissue is extremely small. The PV material has the advantages that the plastic strip has excellent elastic deformation characteristic, can still well recover the original shape after being bent repeatedly in any direction, and is not easy to generate permanent plastic deformation.

For example, the conical surface structure 20 may be a right circular arc, an elliptical arc, or other smooth continuous arc.

Example 2:

referring to fig. 5, the present embodiment provides an endotracheal intubation assembly. The endotracheal tube assembly includes an endotracheal tube 40 and the endotracheal tube guide core provided in example 1. In this embodiment, the guide core and the endotracheal tube 40 are combined to form a set of endotracheal tube assembly, the diameter and length of the guide core and the inner diameter and length of the endotracheal tube 40 are matched with each other, so that the production standardization and the matching of doctors are facilitated, and the endotracheal tube assembly is applied to the endotracheal intubation, so that the problems in the background art can be solved.

Based on the above-mentioned endotracheal intubation assembly, this embodiment will provide some examples of specific embodiments, and the examples can be combined with each other on the premise of not interfering with each other. It should be understood that any combination of the above examples may be combined to form a new endotracheal tube assembly falling within the scope of the present invention.

For example, referring to fig. 5, the length of the guiding core of the endotracheal tube is greater than the length of the endotracheal tube 40, and the greater length is equal to the length of the probe 20.

For example, considering that the insertion end section of the conventional endotracheal tube 40 is a bevel section, the tip of the bevel is less rigid and is easily everted or inverted during intubation. Therefore, in this embodiment, the insertion end of the endotracheal tube 40 can have a circular flat cross section. The round flat section has stronger mechanical property and rigidity, and can not be turned outwards or inwards in the process of intubation.

For example, referring to FIG. 6, considering that the endotracheal tube 40 has a certain wall thickness, too thick a wall thickness at the insertion end of the endotracheal tube 40 increases the risk of abrading the tissues of the inner wall of the trachea. Therefore, in this embodiment, the wall thickness of the insertion end of the endotracheal tube 40 can gradually become thicker from the end portion to the rear, so that the wall thickness at the circular flat section is thinner, and the endotracheal tube has a soft characteristic, as shown in fig. 6.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and the present invention should be covered by the scope of the present invention.

Claims

1. The guide core for the trachea cannula is characterized by comprising a core column and a probe, wherein the probe is arranged at one end of the core column and is of a net-shaped semi-circular arc surface structure or a net-shaped conical surface structure which is formed by a plurality of first ribs in a surrounding mode;

the stem is the cylinder that encloses by a plurality of second ribs are parallel to each other, one side in the cylinder is provided with a plurality of one-way teeth and a closed loop along length direction, the closed loop encloses a plurality of one-way teeth, it is relative in the cylinder one side of one-way tooth articulates there is a support ring, the support ring with two rings of closed loop are detained mutually, when the cylinder is crooked, the support ring can fall into between the one-way tooth and block.

2. The guide core for the tracheal intubation according to claim 1, wherein the core column is a cylinder formed by a plurality of second ribs which are parallel to each other, and the cylinder has an arc of 110-130 degrees; a plurality of rib rings are further sequentially arranged along the length direction of the column body and used for fixing the second ribs.

3. The guide core for tracheal intubation according to claim 1, further comprising a tail end fixing device, wherein the tail end fixing device comprises a cover body and fastening lugs hinged to two sides of the cover body.

4. The endotracheal tube guide core of claim 1, wherein the second rib is a medical stainless steel wire or a medical PV material.

5. An endotracheal tube assembly comprising an endotracheal tube and an endotracheal tube guide core according to any one of claims 1 to 4.

6. The endotracheal tube assembly according to claim 5, characterized in that the endotracheal tube guide core has a length greater than the length of the endotracheal tube and greater than a length equal to the length of the probe.

7. The endotracheal tube assembly according to claim 5, characterized in that the endotracheal tube insertion end is of circular flattened cross section.

8. The endotracheal tube assembly according to claim 5, characterized in that the insertion end wall thickness of the endotracheal tube becomes gradually thicker from the end portion rearward.