Guide device for assisting tracheostomy

Abstract

The utility model relates to a guiding device used for assisting tracheostomy, belongs to the technical field of medical instruments, and solves the problem that in the existing tracheostomy technology, when a tracheal cannula is inserted into a tracheostomy hole to assist ventilation, the cannula is easily scratched by a tracheal edge incision, so that intubation fails. The guide device comprises an avulsion sheath and a sheath core, the sheath core comprises a handle and a mandrel; the core shaft is of a cylinder structure; the handle is arranged above the mandrel; the handle serves as a force application structure and can drive the mandrel to be separated from the avulsion sheath; the avulsion sheath comprises a sheath shell and a traction structure; the sheath shell covers the outer part of the core shaft and is used for guiding the trachea cannula; at least one linear incision is formed in the edge of the sheath shell; the traction structure is arranged on the side face of the sheath shell and used for achieving tearing of the sheath shell along the linear incision. According to the guiding device, the guiding function in the tracheal cannula intubation process can be achieved, and meanwhile the avulsion sheath can be rapidly torn off after guiding is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, it is a kind of guiding device for assisting tracheostomy. BACKGROUND

[0002] Percutaneous tracheostomy technique is the treatment technique commonly used by critical patients. Patients with respiratory failure, consciousness disorder, respiratory muscle weakness and needing to receive general anesthesia due to various reasons need to use mechanical ventilation, and the establishment of artificial airway is the premise of mechanical ventilation. Short-term mechanical ventilation can use tracheal intubation as artificial airway. With the extension of mechanical ventilation time, tracheal intubation has the problems of poor comfort, easy to cause pulmonary infection, relatively difficult respiratory tract management, increase dead space ventilation and the like. Therefore, for patients needing more than 1 week of mechanical ventilation, the clinic usually chooses to replace tracheal intubation with percutaneous tracheostomy.

[0003] The operation process of tracheostomy technique is generally as follows: 1. Incise the epidermis at two horizontal fingers below the laryngeal prominence of the patient; 2. Preliminary tonic separation of subcutaneous and muscle layer, expose trachea; 3. Puncture needle is inserted into trachea, guide wire is placed along the puncture needle, puncture needle is pulled out, and guide wire is left in trachea; 4. Along the tail of guide wire, clamp-shaped tool is inserted into trachea, and sinus tract penetrating subcutaneous, muscle layer and trachea is formed by tonic separation; 5. Place tracheostomy special cannula.

[0004] When the existing tracheal cannula is placed, the air bag of the tracheal cannula is easy to be cut and torn by tracheal incision, which affects the ventilation effect in a light case, and may cause intubation failure in a serious case. Therefore, it is necessary to provide a tracheal intubation auxiliary device which can provide guidance and prevent the cannula from being cut and torn when the tracheal cannula is inserted into tracheal hole, and can be conveniently taken out after the tracheal cannula is inserted. UTILITY MODEL CONTENTS

[0005] In view of the above analysis, the utility model aims to provide a guiding device for assisting tracheostomy, to solve the problem that the existing tracheal cannula is easy to be cut and torn, which causes intubation failure.

[0006] The utility model mainly aims to realize the following technical scheme:

[0007] A guiding device for assisting tracheostomy, comprising: a tear-off sheath and a sheath core; the tear-off sheath is sleeved on the outer surface of the sheath core, and is used for guiding the intubation process of the tracheal cannula;

[0008] The sheath core comprises: a handle and a core shaft; the core shaft is a column structure; the handle is arranged above the core shaft; the handle serves as a force applying structure, and can drive the core shaft and the tear-off sheath to separate at the same time;

[0009] The tear-off sheath comprises a sheath shell and a pulling structure; the sheath shell is wrapped outside the mandrel; the sheath shell is a tearable plastic film, and the edge of the sheath shell is provided with at least one linear cut; the pulling structure is arranged on the side of the sheath shell and used for realizing tearing of the sheath shell along the linear cut.

[0010] Further, the handle is a T-shaped structure, comprising a character-shaped crossbeam and a vertical connecting rod; the vertical connecting rod is fixedly installed above the mandrel, and the character-shaped crossbeam is perpendicular to the vertical connecting rod.

[0011] Further, a wire guide via hole is arranged on the sheath mandrel; the wire guide via hole extends from the upper end surface of the handle to the lower end surface of the mandrel.

[0012] Further, the mandrel comprises a first column segment, a second column segment and a frustum segment; the upper end of the first column segment is connected with the handle, and the lower end is connected with the upper end of the second column segment; the second column segment is a cylindrical structure; the lower end of the second column segment is connected with the frustum segment; the large end of the frustum segment is connected with the lower end of the second column segment and has the same diameter.

[0013] Further, the diameter of the first column segment is greater than the diameter of the second column segment; or the first column segment is a circular truncated cone structure with a gradually changing diameter; the diameter of the large end of the circular truncated cone structure is greater than the diameter of the second column segment; and the diameter of the small end of the circular truncated cone structure is equal to the diameter of the second column segment.

[0014] Further, the sheath shell comprises a first sheath shell segment and a second sheath shell segment; the first sheath shell segment is wrapped outside the outer surface of the first column segment; and the second sheath shell segment is wrapped outside the outer surface of the second column segment.

[0015] Further, the sheath shell further comprises an outer circular ring; the outer circular ring is arranged perpendicularly to the second sheath shell segment.

[0016] Further, the linear cut is arranged at the edge of the outer circular ring, and two linear cuts are symmetrically arranged on the outer circular ring.

[0017] Further, the pulling structure is symmetrically arranged on both sides of the outer circular ring, and the linear cut is arranged between the two pulling structures.

[0018] Further, the pulling structure is a circular ring-shaped pull ring, and the surface of the pull ring is provided with an anti-skid structure.

[0019] The technical scheme of the utility model can at least realize one of the following effects:

[0020] 1. The guiding device for assisting tracheostomy, a tearable tear-off sheath is arranged outside the sheath core, when the tracheal cannula intubation operation of tracheostomy is carried out, the guiding device is inserted into the tracheostoma as a whole, the sheath core is pulled out, the tear-off sheath is retained in the trachea as an introduction channel, and then the tracheal cannula is inserted into the trachea from the tear-off sheath, when the tracheal cannula intubation operation is carried out, the tear-off sheath is guided and protected, the flexible air bag of the tracheal cannula can be prevented from being scratched or torn by the sharp edge of the tracheostoma, and the success rate of intubation and the ventilation performance after intubation are improved.

[0021] 2. The guiding device for assisting tracheostomy, the core shaft and the sheath shell are arranged in a multi-section structure, a conical section is arranged at the front end of the core shaft, the guiding device is inserted into the tracheostoma as a whole, and the rear section of the sheath shell is arranged in a diameter-gradually-changing structure, so that the tracheal cannula can be conveniently placed in the tear-off sheath, and the guiding effect of the sheath shell on the tracheal cannula is conveniently achieved.

[0022] 3. The core shaft of the guiding device for assisting tracheostomy is provided with a T-shaped handle as a force applying structure, so that the resistance of the tissue around the tracheostoma can be overcome when the guiding device is inserted into the tracheostoma, and the T-shaped handle facilitates the separation of the core shaft and the tear-off sheath after the guiding device is placed.

[0023] 4. The guiding device for assisting tracheostomy, two pulling structures are arranged on the two sides of the sheath shell, and a linear cut is arranged between the two pulling structures, so that the sheath shell of the tear-off sheath can be torn into two parts after the guiding device completes the guiding function of the tracheal cannula, and then the sheath shell can be pulled out of the tracheostoma, and the air bag of the tracheal cannula can be inflated to assist the ventilation of the patient through the tracheal cannula.

[0024] In the utility model, the above-mentioned technical schemes can be combined with each other to realize more preferred combination schemes. Other features and advantages of the utility model will be described in the subsequent specification, and some advantages can become apparent from the specification or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the contents specially pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings are only used for the purpose of showing specific embodiments and are not considered as limitations of the utility model, and the same reference signs represent the same parts throughout the drawings.

[0026] Figure 1 It is a structure schematic view of the guiding device for assisting tracheostomy of the utility model;

[0027] Figure 2A sheath core and a tear-off sheath of a guiding device for assisting tracheostomy are separated state schematic view of the utility model;

[0028] Figure 3 A sheath core of a guiding device for assisting tracheostomy is structural schematic view of the utility model;

[0029] Figure 4 A tear-off sheath of a guiding device for assisting tracheostomy is structural schematic view of the utility model;

[0030] Figure 5 A tear-off sheath of a guiding device for assisting tracheostomy is top view of the utility model.

[0031] Reference signs:

[0032] 1-handle;2-core shaft;3-sheath shell;4-pulling structure;

[0033] 101-guide wire via hole;102-rectangular beam;103-vertical connecting rod;

[0034] 201-first column segment;202-second column segment;203-conical segment;

[0035] 301-first sheath shell segment;302-second sheath shell segment;303-outer circular ring;304-linear cutout;

[0036] 401-anti-skid structure. DETAILED DESCRIPTION

[0037] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, wherein the drawings constitute a part of the utility model, and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.

[0038] Example 1

[0039] One specific embodiment of the utility model discloses a guiding device for assisting tracheostomy, as shown in Figure 1 、 Figure 2 , which comprises a tear-off sheath and a sheath core;The sheath core is a hard structure;The tear-off sheath is sleeved on the outer surface of the sheath core, and can guide tracheal intubation after being separated from the sheath core;When performing tracheal cannula intubation operation of tracheostomy, the guiding device is inserted into the tracheal hole, and then the sheath core is pulled out, and the tear-off sheath is retained in the trachea as an introduction channel, and then the tracheal cannula is inserted into the trachea from the tear-off sheath, when the tracheal cannula intubation operation is performed, the tear-off sheath with smooth surface is guided and protected, which facilitates the smooth penetration of the tracheal cannula, and can avoid that the flexible air bag of the tracheal cannula is scratched or torn by the sharp edge of the tracheal hole, finally, the success rate of intubation and the ventilation performance after intubation are improved.

[0040] Specifically, as shown in Figure 3 , the sheath core comprises: a handle 1 and a core shaft 2; the core shaft 2 is a column structure; the handle 1 is arranged above the core shaft 2; the handle 1 serves as a force applying structure, and can separate the core shaft 2 from the tear-off sheath.

[0041] In the embodiment, preferably, as shown in Figure 3 , the handle 1 is a T-shaped structure, comprising: a one-character-shaped cross beam 102 and a vertical connecting rod 103; the vertical connecting rod 103 is fixedly installed above the core shaft 2, and the one-character-shaped cross beam 102 is perpendicular to the vertical connecting rod 103.

[0042] In the implementation, the handle 1 serves as a force applying structure for puncture in the process of inserting the guiding device into the tracheal hole, and the handle 1 serves as a force applying structure for pulling out the core shaft 2 when the core shaft 2 is pulled out of the tear-off sheath. In the embodiment, the handle 1 is arranged in a T-shaped structure, which facilitates the pressing and pulling operation of the handle 1.

[0043] Specifically, as shown in Figure 4 , the tear-off sheath comprises: a sheath shell 3 and a pulling structure 4; the sheath shell 3 is wrapped outside the core shaft 2. The sheath shell 3 is a tearable plastic film; at least one linear cut 304 is arranged at the edge of the sheath shell 3; the pulling structure 4 is arranged on the side of the sheath shell 3, and is used for tearing the sheath shell 3 along the linear cut 304.

[0044] Preferably, the sheath shell 3 of the tear-off sheath is made of a plastic material which is not easy to penetrate and easy to tear along the cut; for example, ethylene-vinyl alcohol copolymer (EVOH), which is commonly used to make outer packaging bags / films for food and beverages. That is, in the utility model, the tear-off sheath can ensure that it will not be torn during the tracheal cannula insertion process, and can be quickly torn off after the tracheal cannula insertion is completed.

[0045] Preferably, the sheath shell 3 is a cylindrical structure wrapped outside the core shaft 2; the pulling structure 4 is arranged at the upper end of the sheath shell 3 and is perpendicular to the axis of the sheath shell 3.

[0046] In the implementation, the sheath shell 3 of the tear-off sheath can be prevented from being separated from the tracheal hole by pressing the pulling structure 4 during the process of pulling out the core shaft 2 from the tear-off sheath. After the tracheal cannula insertion operation is completed, the sheath shell 3 can be torn into two parts along the linear cut 304 by pulling the pulling structure 4, so that the tear-off sheath can be quickly pulled out from between the tracheal hole and the tracheal cannula.

[0047] In the embodiment, as shown in Figure 1 , Figure 2As shown, the sheath core is provided with a guide wire through hole 101; the guide wire through hole 101 extends from the upper end face of the handle 1 to the lower end face of the core shaft 2. In implementation, the end of the guide wire (metal filament) reserved in the tracheal hole is inserted into the guide wire through hole 101, and then the whole guide device is inserted into the tracheal hole along the guide wire, and the guide wire plays a role of guiding the insertion of the guide structure in the process, thereby ensuring the accuracy and insertion efficiency of the whole guide device inserted into the trachea.

[0048] In the embodiment, as shown in the figure, Figure 3 The core shaft 2 comprises a first column segment 201, a second column segment 202 and a frustum segment 203; the upper end of the first column segment 201 is connected with the handle 1, and the lower end is connected with the upper end of the second column segment 202; the second column segment 202 is a cylindrical structure; the lower end of the second column segment 202 is connected with the frustum segment 203; the large end of the frustum segment 203 is connected with the lower end of the second column segment 202 and has the same diameter.

[0049] Further, the diameter of the first column segment 201 is larger than that of the second column segment 202; or the first column segment 201 is a circular truncated cone structure with a gradually changing diameter; the diameter of the large end of the circular truncated cone structure is larger than that of the second column segment 202; and the diameter of the small end of the circular truncated cone structure is equal to that of the second column segment 202.

[0050] In the embodiment, the frustum segment 203 is arranged to facilitate the insertion of the whole guide device into the tracheal hole; and the first column segment 201 with a gradually changing size is arranged to enable the whole guide device to be clamped in the tracheal hole after being inserted into the tracheal hole, thereby facilitating the subsequent operation of separating the core shaft 2 from the sheath shell 3 of the tear-away sheath.

[0051] In the embodiment, as shown in the figure, Figure 4 The sheath shell 3 comprises a first sheath shell segment 301 and a second sheath shell segment 302; the first sheath shell segment 301 covers the outer surface of the first column segment 201; and the second sheath shell segment 302 covers the outer surface of the second column segment 202.

[0052] In the embodiment, the first column segment 201 is arranged as a circular truncated cone structure with a gradually changing size, and the corresponding first sheath shell segment 301 is also arranged as a size-gradually changing structure; on the one hand, the separation operation of the core shaft 2 from the sheath shell 3 is facilitated; and on the other hand, the tracheal tube can be easily inserted into the sheath shell 3 of the tear-away sheath, thereby enabling the tracheal tube to be quickly inserted.

[0053] In the embodiment, as shown in the figure, Figure 4 The sheath shell 3 further comprises an outer circular ring 303; the outer circular ring 303 is arranged perpendicularly to the second sheath shell segment 302; and the linear cutout 304 is arranged at the edge of the outer circular ring 303.

[0054] Further, two linear cuts 304 are symmetrically arranged on the outer ring 303.

[0055] In this embodiment, as shown in the figure, two pulling structures 4 are symmetrically arranged on both sides of the outer ring 303; and the linear cut 304 is arranged between the two pulling structures 4. Figure 5 That is, the two linear cuts 304 and the two pulling structures 4 are arranged in a cross shape.

[0056] Preferably, as shown in the figure, the two pulling structures 4 are symmetrically arranged on both sides of the sheath 3; and the linear cut 304 is arranged on the symmetry plane of the two pulling structures 4. Figure 5

[0057] Preferably, the pulling structure 4 is a circular ring-shaped pull ring; and the surface of the pull ring is provided with an anti-skid structure 401.

[0058] Specifically, the anti-skid structure 401 is a linear ridge arranged on the surface of the pull ring, as shown in the figure. Figure 4 、 Figure 5

[0059] In implementation, after the tracheal cannula is inserted into the tracheostoma under the guidance of the tear-away sheath, by pulling the two pulling structures 4 on both sides of the sheath 3 to the two sides, the lateral pulling force at the two pulling structures 4 is transmitted to the linear cut 304, which can gradually tear the sheath 3 of the tear-away sheath into two parts at the position of the linear cut 304, and then the sheath 3 can be pulled out from the tracheostoma (human tissue) and the tracheal cannula (intubation equipment), and then the airbag of the tracheal cannula is inflated, and the patient can be assisted to breathe through the tracheal cannula.

[0060] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.​​

Claims

1. A guide device for assisting a tracheostomy, characterized in that The utility model relates to a tracheal intubation device, including: a tear-off sheath and a sheath core; the tear-off sheath is sleeved on the outer surface of the sheath core for guiding the intubation process of a tracheal cannula; the sheath core includes a handle (1) and a core shaft (2); the core shaft (2) is a column structure; the handle (1) is arranged above the core shaft (2); the handle (1) is used as a force applying structure, and simultaneously can drive the core shaft (2) to separate from the tear-off sheath; the tear-off sheath includes a sheath shell (3) and a pulling structure (4); the sheath shell (3) is covered outside the core shaft (2); the sheath shell (3) is a tearable plastic film, and the edge of the sheath shell (3) is provided with at least one linear cut (304); the pulling structure (4) is arranged on the side of the sheath shell (3) and is used for realizing the tearing of the sheath shell (3) along the linear cut (304).

2. The guiding device for a tracheostomy according to claim 1, characterized in that the handle (1) is a T-shaped structure, including a character-shaped crossbeam (102) and a vertical connecting rod (103); the vertical connecting rod (103) is fixedly installed above the core shaft (2), and the character-shaped crossbeam (102) is perpendicular to the vertical connecting rod (103).

3. A guide device for assisting a tracheostomy according to claim 1 or 2, characterized in that a wire guide via (101) is arranged on the sheath core; the wire guide via (101) extends from the upper end surface of the handle (1) to the lower end surface of the core shaft (2).

4. The guiding device for a tracheostomy according to claim 1, characterized in that the core shaft (2) includes a first column segment (201), a second column segment (202) and a frustum segment (203); the upper end of the first column segment (201) is connected with the handle (1), and the lower end is connected with the upper end of the second column segment (202); the lower end of the second column segment (202) is connected with the frustum segment (203); the large end of the frustum segment (203) is connected with the lower end of the second column segment (202) and has the same diameter.

5. A guide device for assisting a tracheostomy according to claim 4, characterised in that, the diameter of the first column segment (201) is greater than the diameter of the second column segment (202); or the first column segment (201) is a circular truncated cone structure with a gradually changed diameter; the diameter of the large end of the circular truncated cone structure is greater than the diameter of the second column segment (202); and the diameter of the small end of the circular truncated cone structure is equal to the diameter of the second column segment (202).

6. A guide device for assisting a tracheostomy according to claim 4 or 5, characterized in that the sheath shell (3) includes a first sheath shell segment (301) and a second sheath shell segment (302); the first sheath shell segment (301) is covered on the outer surface of the first column segment (201); and the second sheath shell segment (302) is covered on the outer surface of the second column segment (202).

7. A guide device for assisting a tracheostomy according to claim 6, characterised in that, the sheath shell (3) further includes an outer circular ring (303); and the outer circular ring (303) is arranged perpendicularly to the second sheath shell segment (302).

8. A guide device for assisting a tracheostomy according to claim 7, characterized in that the linear cut (304) is arranged at the edge of the outer circular ring (303), and two linear cuts (304) are symmetrically arranged on the outer circular ring (303).

9. A guide device for assisting a tracheostomy according to claim 8, characterized in that two pulling structures (4) are symmetrically arranged on the two sides of the outer circular ring (303); and the linear cut (304) is arranged between the two pulling structures (4).

10. The guiding device for a tracheostomy according to claim 9, characterized in that the pulling structure (4) is a circular ring-shaped pull ring; and an anti-skid structure (401) is arranged on the surface of the pull ring.

Images