Thyrocricoid puncture needle

Abstract

The utility model relates to the technical field of medical instruments, in particular to a cricothyroid membrane puncture needle. The cricothyroid membrane puncture needle comprises a sleeve, a puncture needle body and a limiting piece. A limiting piece of the cricothyroid membrane puncture needle is provided with a limiting column and a baffle, the limiting column abuts against the abutting portion of the sleeve, when cricothyroid membrane puncture is carried out, after the puncture needle and the sleeve pierce into the cricothyroid membrane, the baffle of the limiting piece can be attached to the throat of the human body along with increase of the piercing depth, the puncture needle cannot continue piercing, and therefore the piercing depth is controlled. The projection area of the baffle is larger than the projection area of the limiting column in the axial direction of the tube body, so that the contact area of the limiting piece and the throat is enlarged, pressure generated by the limiting piece on the surface of the throat is reduced, and damage to the throat of a patient due to misoperation is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a cricothyroid membrane puncture needle. Background Art

[0002] The cricothyroid membrane puncture needle is a medical device used for cricothyroid membrane puncture. The cricothyroid membrane puncture needle is usually used for patients with acute laryngeal obstruction, especially glottic area obstruction, severe dyspnea, and no time to establish an artificial airway. Cricothyroid membrane puncture can be performed quickly to relieve dyspnea.

[0003] The cricothyroidotomy needle usually consists of a thin metal needle and a cannula. During the operation, the doctor will insert the puncture needle into the patient's cricothyroid membrane, then pull out the metal needle to insert the cannula into the trachea, allowing the patient to breathe through the cannula.

[0004] In order to control the puncture depth of the puncture needle and prevent the puncture needle from puncturing the trachea, the puncture needle usually also includes a limit tube. The sleeve includes a tube body that is inserted into the limit tube sleeve and an abutment portion connected to one side of the tube body. One end of the limit tube is used to contact the surface of the patient's throat, and the other end is used to abut the abutment portion to limit the puncture depth of the puncture needle. Since the limit tube is very thin, it will exert a large pressure on the throat surface when used, and improper operation may easily scratch the user. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a cricothyroid membrane puncture needle to solve the problem in the prior art that the limiter will generate greater pressure on the throat surface when in use, and improper operation may easily scratch the user.

[0006] The cricothyroid membrane puncture needle provided in the embodiment of the utility model includes: a sleeve, which includes an abutment portion and a tube body, the abutment portion is provided with a through opening, and one end of the tube body is installed at the through opening; a puncture needle, which is detachably inserted into the tube body and the through opening; a limiting member, which includes a limiting column and a baffle, the sleeve is detachably inserted into the limiting column and the baffle, the baffle is located on a side of the limiting member away from the abutment portion, and the limiting column is located on the other side of the limiting member, the limiting column abuts against the abutment portion, and in the axial direction of the tube body, the projection area of ​​the baffle is larger than the projection area of ​​the limiting column.

[0007] Optionally, the limiting member is provided with a through hole penetrating the limiting column and the baffle, the tube body is passed through the through hole, and an opening connected to the outer side surface of the limiting member is provided on the hole wall of the through hole.

[0008] Optionally, the diameter of the through hole and the diameter of the tube body are both greater than the width of the opening, and the limiting member is an elastic limiting member.

[0009] Optionally, the limiting member is made of a transparent material.

[0010] Optionally, the baffle includes an end wall facing away from the limiting column and a peripheral wall arranged around the end wall, and a rounded corner is provided at a connection position between the end wall and the peripheral wall.

[0011] Optionally, a ventilation hole is provided on the side wall of the tube body away from one end of the abutting portion.

[0012] Optionally, there are multiple ventilation holes.

[0013] Optionally, the abutting portion is provided with two connecting sections which are arranged opposite to each other in the radial direction of the tube body, and a threading opening is provided on the connecting sections along the axial direction of the tube body.

[0014] Optionally, a handle is provided at one end of the puncture needle close to the abutment portion.

[0015] Optionally, a limiting groove is provided on a side of the abutting portion facing away from the limiting member, the through opening is communicated with a bottom of the limiting groove, and a side of the handle close to the limiting member is accommodated in the limiting groove.

[0016] Compared with the prior art, the cricothyroid membrane puncture needle provided by the embodiment of the utility model has the beneficial effect that: the cricothyroid membrane puncture needle includes a sleeve, a puncture needle and a stopper. Among them, the sleeve includes an abutment portion and a tube body, the abutment portion is provided with a through opening, and one end of the tube body is installed at the through opening; the puncture needle is detachably inserted into the tube body and the through opening; the stopper includes a stopper column and a baffle, the sleeve is detachably inserted into the stopper column and the baffle, the baffle is located on the side of the stopper away from the abutment portion, the stopper column is located on the other side of the stopper, the stopper column abuts against the abutment portion, and in the axial direction of the tube body, the projection area of ​​the baffle is larger than the projection area of ​​the stopper column.

[0017] The limiting member of the cricothyroid puncture needle of the utility model is provided with a limiting column and a baffle, and the limiting column and the abutment part of the sleeve are abutted against each other. When performing cricothyroid puncture, after the puncture needle and the sleeve pierce the cricothyroid membrane, as the puncture depth increases, the baffle of the limiting member will stick to the human throat, so that the puncture needle cannot continue to pierce, thereby controlling the puncture depth. Since the projection area of ​​the baffle is larger than the projection area of ​​the limiting column in the axial direction of the tube body, the contact area between the limiting member and the throat becomes larger, thereby reducing the pressure generated by the limiting member on the throat surface, and effectively preventing the patient's throat from being damaged due to improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 It is a three-dimensional schematic diagram of a cricothyroidotomy needle provided in an embodiment of the utility model;

[0020] Figure 2 is a schematic diagram of the puncture position provided by an embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional schematic diagram of a limiting member provided in an embodiment of the utility model;

[0022] Figure 4 It is a three-dimensional schematic diagram of a casing provided by an embodiment of the utility model from one perspective;

[0023] Figure 5 It is a three-dimensional schematic diagram of another viewing angle of the sleeve provided by the embodiment of the utility model;

[0024] Figure 6 It is a three-dimensional schematic diagram of a puncture needle provided in an embodiment of the utility model.

[0025] The reference numerals in the figures are:

[0026] 100. Cricothyroid membrane puncture needle;

[0027] 1. Sleeve; 11. Abutment portion; 111. Through port; 112. Connecting section; 1211. Threading port; 113. Limiting groove; 12. Tube body; 121. Air vent; 2. Puncture needle; 21. Handle; 3. Limiting member; 31. Limiting column; 32. Baffle; 321. End wall; 322. Peripheral wall; 323. Fillet; 33. Through hole; 34. Opening. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0029] The present utility model embodiment provides a cricothyroid membrane puncture needle 100, such as Figures 1 to 6 As shown, the cricothyroid membrane puncture needle 100 includes a sleeve 1, a puncture needle 2 and a stopper 3. The sleeve 1 includes an abutment portion 11 and a tube body 12, the abutment portion 11 is provided with a through opening 111, and one end of the tube body 12 is installed at the through opening 111; the puncture needle 2 is detachably inserted into the tube body 12 and the through opening 111; the stopper 3 includes a stopper column 31 and a baffle 32, the sleeve 1 is detachably inserted into the stopper column 31 and the baffle 32, the baffle 32 is located on one side of the stopper 3 away from the abutment portion 11, the stopper column 31 is located on the other side of the stopper 3, the stopper column 31 is in contact with the abutment portion 11, and in the axial direction of the tube body 12, the projection area of ​​the baffle is larger than the projection area of ​​the stopper column 31.

[0030] Specifically, the cricothyroid puncture needle 100 includes a cannula 1, a puncture needle 2 and a stopper 3. Among them, the puncture needle 2 is used to puncture the cricothyroid membrane to insert the tube body 12 of the cannula 1 into the trachea, so that the patient can breathe through the cannula 1. Specifically, the stopper 3 is provided with a stopper column 31 and a baffle 32, and the stopper column 31 abuts against the abutment portion 11 of the cannula 1. When the puncture needle 2 is used for puncture, after the puncture needle 2 and the cannula 1 puncture the cricothyroid membrane, as the puncture depth increases, the baffle 32 of the stopper 3 will contact the patient's neck, making it impossible for the puncture needle 2 to continue to puncture, thereby controlling the puncture depth, preventing the puncture needle 2 from scraping the trachea, and improving the safety of the puncture process. At this time, the puncture needle 2 is pulled out from the cannula 1, and the stopper 3 is removed, and the cannula 1 is continued to be inserted into the trachea, and the abutment portion 11 of the cannula 1 will contact the neck, thereby preventing the cannula 1 from sliding completely into the trachea. After the cannula 1 is inserted into the trachea, the opening 111 on the abutment portion 11 can connect the cannula 1 with the outside world, ensuring that the patient can inhale oxygen through the cannula 1 to solve the patient's breathing problem.

[0031] It should be noted that if Figure 2 As shown, the actual position of the cricothyroid membrane (i.e. Figure 2 The puncture area in the throat is usually below the Adam's apple, through which the position of the cricothyroid membrane can be quickly located. For women with unclear Adam's apples and some obese men, the suprasternal fossa can be used as a positioning reference point when puncturing. The palm of the hand is wrapped around the throat, and the little finger is placed on the suprasternal fossa. At this time, the position corresponding to the index finger is the position of the cricothyroid membrane. Of course, for children or people with short and thick necks who are not easy to quickly locate the position of the cricothyroid membrane, puncture can also be performed in alternative puncture areas to quickly puncture the patient's airway and avoid life-threatening situations for the patient. It is worth mentioning that the cricothyroid membrane puncture needle 100 of the utility model is equipped with a puncture bag and, for example, Figure 2 The cricothyroid membrane puncture drawing shown in the figure marks the puncture site and the above-mentioned positioning method, so as to help non-specialized medical staff to accurately and quickly locate the position of the cricothyroid membrane in an emergency situation and achieve the purpose of rescue.

[0032] In addition, since the projected area of ​​the baffle 32 is larger than the projected area of ​​the limiting column 31 in the axial direction of the tube body 12, the contact area between the limiting member 3 and the throat becomes larger, thereby reducing the pressure exerted by the limiting member 3 on the throat surface and effectively preventing damage to the patient's throat due to improper operation.

[0033] It is worth mentioning that the trachea of ​​people of different ages is different in thickness, especially the trachea of ​​infants and young children is relatively thin. When the limiter 3 of the utility model is produced, the height of the limiter column 31 can be specifically set so that different types of limiters 3 can adapt to the trachea sizes of different age groups. When performing puncture, it is only necessary to select limiters 3 of different sizes according to the age of the patient to adjust the puncture depth of the puncture needle 2, so that the operator can control the puncture depth more accurately, avoid damaging the patient's trachea or throat, and ensure the safety of the patient.

[0034] In order to make the technical personnel in this field better understand the present utility model scheme, the following will be combined with the attached Figures 1 to 6 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0035] Further, as a specific implementation in some embodiments of the present utility model, Figure 3 As shown, the limiting member 3 is provided with a through hole 33 penetrating the limiting column 31 and the baffle 32 , the tube body 12 is passed through the through hole 33 , and an opening 34 connected to the outer side surface of the limiting member 3 is provided on the hole wall of the through hole 33 .

[0036] Specifically, the stopper 3 is provided with a through hole 33 penetrating the stopper column 31 and the baffle 32, so that the tube body 12 of the sleeve 1 can be passed through the stopper 3. An opening 34 connected to the outer side of the stopper 3 is provided on the hole wall of the through hole 33. During the puncture process, after the baffle 32 of the stopper 3 contacts the patient's neck, the stopper 3 can be quickly removed from the tube body 12 through the opening 34, thereby improving the speed of the entire puncture and gaining more treatment time for the patient.

[0037] Further, as a specific implementation in some embodiments of the present utility model, Figure 3 As shown, the diameter of the through hole 33 and the diameter of the tube body 12 are both greater than the width of the opening 34 , and the limiting member 3 is an elastic limiting member 3 .

[0038] Specifically, the diameter of the through hole 33 and the diameter of the tube body 12 are both larger than the width of the opening 34, which not only ensures that the stopper 3 can be removed from the tube body 12, but also enhances the stability of the connection between the tube body 12 and the stopper 3, and prevents the stopper 3 from being separated from the tube body 12 during the puncture process. Since the stopper 3 is an elastic stopper 3, the stopper 3 can be removed from the tube body 12 by simply pulling the two sides of the opening 34 outward.

[0039] Further, as a specific implementation in some embodiments of the present utility model, Figure 3 As shown, the stopper 3 is made of a transparent material. Specifically, the stopper 3 is made of a transparent material, so that during the puncture process, the stopper 3 does not block the field of vision, and the operator can clearly observe the puncture position, thereby improving the accuracy and safety of the operation.

[0040] As a specific implementation in some embodiments of the present utility model, Figure 3 As shown, the baffle 32 includes an end wall 321 facing away from the limiting column 31 and a peripheral wall 322 arranged around the end wall 321 , and a rounded corner 323 is provided at the connection position between the end wall 321 and the peripheral wall 322 .

[0041] Specifically, a rounded corner 323 is provided at the connection position between the end wall 321 and the peripheral wall 322 of the baffle 32, so that the connection between the end wall 321 and the peripheral wall 322 is smoother, to prevent the existence of a sharp edge at the connection position between the end wall 321 and the peripheral wall 322, and to prevent the baffle 32 from causing damage to the patient's throat.

[0042] As a specific implementation in some embodiments of the present utility model, Figure 1 , Figure 4 and Figure 5 As shown, a vent hole 121 is provided on the side wall of the tube body 12 at one end away from the abutting portion 11 .

[0043] Specifically, on the one hand, the vent 121 allows the patient to inhale more oxygen through the tube body 12, effectively increasing the inhalation efficiency and more quickly relieving the patient's dyspnea symptoms. On the other hand, since the vent 121 is disposed on the side wall of the tube body 12 away from the abutment portion 11, even if the tube opening of the endotracheal tube body 12 is blocked, the patient can still inhale oxygen through the vent 121, thereby ensuring the patient's safety and improving the reliability and practicality of the cricothyroidotomy needle 100.

[0044] Preferably, a plurality of air holes 121 are provided. The plurality of air holes 121 can further increase the ventilation effect, reduce the risk of blockage of the tube body 12, and ensure that even if some of the air holes 121 are blocked, the patient can still inhale oxygen through other air holes 121.

[0045] As a specific implementation in some embodiments of the present utility model, Figure 1 , Figure 3 and Figure 4 As shown, the abutting portion 11 is provided with two connecting sections 112 which are arranged opposite to each other in the radial direction of the tube body 12 , and a threading opening 1211 is provided on the connecting section 112 along the axial direction of the tube body 12 .

[0046] Specifically, through the threading port 1211, the connecting sections 112 on both sides of the abutment portion 11 can be provided with straps to fix the cannula 1 to the patient's neck, thereby preventing the cannula 1 from shaking and damaging the trachea, and preventing the cannula 1 from withdrawing from the trachea, thereby ensuring that the cannula 1 can stably supply air to the patient's trachea.

[0047] As a specific implementation in some embodiments of the present utility model, Figure 1 and Figure 6 As shown, a handle 21 is provided at one end of the puncture needle 2 close to the abutment portion 11. Specifically, the handle 21 can facilitate the operator to hold and manipulate the puncture needle 2 more easily, ensuring delicate operation during the puncture process.

[0048] Further, as a specific implementation in some embodiments of the present utility model, Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, a limiting groove 113 is provided on the side of the abutting portion 11 facing away from the limiting member 3 , the through opening 111 is communicated with the bottom of the limiting groove 113 , and the side of the handle 21 close to the limiting member 3 is accommodated in the limiting groove 113 .

[0049] Specifically, one side of the handle 21 close to the limiter 3 is accommodated in the limiter groove 113, so that the puncture needle 2 can obtain additional support in the limiter groove 113, ensuring the stability of the connection between the puncture needle 2 and the sleeve 1, reducing the shaking and deviation of the puncture needle 2 during operation, thereby improving the accuracy and safety of the operation, and ensuring the smooth progress of the puncture operation and the safety of the patient.

[0050] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A cricothyroidotomy needle, characterized in that: include: The sleeve comprises an abutment portion and a tube body, wherein the abutment portion is provided with a through opening, and one end of the tube body is mounted at the through opening; A puncture needle, which is detachably inserted into the tube body and the through opening; The limiting member comprises a limiting column and a baffle, wherein the sleeve is detachably inserted through the limiting column and the baffle, the baffle is located on a side of the limiting member away from the abutting portion, the limiting column is located on the other side of the limiting member, the limiting column abuts against the abutting portion, and in the axial direction of the tube body, the projection area of ​​the baffle is larger than the projection area of ​​the limiting column.

2. The cricothyroidotomy needle according to claim 1, characterized in that: The limiting member is provided with a through hole penetrating the limiting column and the baffle, the tube body is penetrated through the through hole, and an opening connected to the outer side surface of the limiting member is provided on the hole wall of the through hole.

3. The cricothyroidotomy needle according to claim 2, characterized in that: The diameter of the through hole and the diameter of the tube body are both greater than the width of the opening, and the limiting member is an elastic limiting member.

4. The cricothyroidotomy needle according to any one of claims 1 to 3, characterized in that: The limiting component is made of transparent material.

5. The cricothyroidotomy needle according to any one of claims 1 to 3, characterized in that: The baffle comprises an end wall facing away from the limiting column and a peripheral wall arranged around the end wall, and a rounded corner is arranged at a connection position between the end wall and the peripheral wall.

6. The cricothyroidotomy needle according to any one of claims 1 to 3, characterized in that: A vent hole is arranged on the side wall of the tube body away from one end of the abutting portion.

7. The cricothyroidotomy needle according to claim 6, characterized in that: The ventilation holes are provided in plurality.

8. The cricothyroidotomy needle according to any one of claims 1 to 3, characterized in that: The abutting portion is provided with two connecting sections which are arranged opposite to each other in the radial direction of the tube body, and a threading opening is provided on the connecting sections along the axial direction of the tube body.

9. The cricothyroidotomy needle according to any one of claims 1 to 3, characterized in that: A handle is provided at one end of the puncture needle close to the abutment portion.

10. The cricothyroidotomy needle according to claim 9, characterized in that: A limiting groove is provided on a side of the abutting portion facing away from the limiting member, the through opening is communicated with the bottom of the limiting groove, and a side of the handle close to the limiting member is accommodated in the limiting groove.

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