Reverse puncture needle for percutaneous tracheostomy
By designing a reverse puncture needle for tracheostomy, the problem of positioning offset and inaccurate in the tracheostomy operation is solved, and the accurate positioning of the tracheostomy hole and the accuracy of the position of the stomatology are achieved.
Patent Information
- Application Number
- CN202421786935.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing tracheostomy operation technology often has problems of positioning offset and inaccurate positioning when performing tracheal puncture positioning, resulting in inaccurate hole-making position.
A reverse puncture needle for percutaneous tracheostomy is designed, including a needle, a clamping mechanism, a guide wire, an unlocking handle and an operating handle. The guide wire is connected to the needle through the clamping mechanism, and the clamping jaws of the clamping mechanism and the needle are locked or unlocked by the action of the pulling ring assembly, ensuring that the needle is punctured in reverse from the inside of the trachea to the outside, achieving accurate positioning of the hole.
Through the use of a reverse puncture needle, tracheal holes can be accurately achieved, reducing the incision size of the patient's external tissue, and improving the accuracy of the position of the tracheal fistula.
Smart Images
Figure CN222955498U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of percutaneous tracheostomy, in particular to a reverse puncture needle for percutaneous tracheostomy. Background Technique
[0002] Tracheostomy is a commonly used treatment technique for critically ill patients. When clinically establishing tracheostomy-assisted ventilation for critically ill patients, tracheotomy is required. After reaming, a tracheal cannula is inserted to ventilate the patient. The basic steps are to incise the skin and muscle layer at two transverse fingers below the patient's Adam's apple, and insert through the incision with surgical forceps to separate the trachea for reaming. After reaming, a tracheal cannula is placed for mechanical ventilation.
[0003] When using the existing tracheotomy operation technique for tracheal puncture positioning, problems such as positioning deviation and inaccurate positioning often occur.
[0004] Therefore, a puncture needle is needed that can achieve reverse puncture from the inside to the outside of the trachea, create a hole and insert a tube at the puncture point, and achieve accurate positioning of the hole-making position. Summary of the Invention
[0005] In view of the above analysis, the utility model aims to provide a reverse puncture needle for percutaneous tracheostomy to solve the problem of inaccurate puncture position in the hole-making method of external tracheal surgical incision.
[0006] The purpose of the utility model is mainly achieved through the following technical solutions:
[0007] A reverse puncture needle for percutaneous tracheostomy includes: a needle head, a clamping mechanism, a guide wire, an unlocking handle, and an operating handle; the needle head is arranged at one end of the guide wire and is locked and unlocked with the guide wire through the clamping mechanism; the operating handle is fixedly installed at the other end of the guide wire; the clamping mechanism includes: a clamping jaw, a pull rod, a first pull ring, and a pull wire; the middle of the clamping jaw is hingedly installed at the end of the guide wire; one end of the clamping jaw is used to clamp the needle head, and the other end is hingedly connected to one end of the pull rod; the other end of the pull rod is hingedly connected to the first pull ring; the first pull ring is fixedly connected to the unlocking handle through the pull wire; when the unlocking handle drives the first pull ring to move up or down, the clamping jaw can clamp or loosen the needle head.
[0008] Further, a plurality of clamping jaws are arranged at equal intervals along the circumferential direction of the needle head.
[0009] Further, an annular installation groove is arranged on the outer side of the guide wire; the first pull ring is arranged in the annular installation groove and can slide relative to the guide wire.
[0010] Further, a first spring is provided between the first pull ring and the end face of the annular mounting groove; the first spring can push the first pull ring to displace towards the clamping jaw.
[0011] Further, one end of the wire is fixedly connected to the first pull ring, and the other end is fixedly connected to the unlocking handle; the unlocking handle can pull the first pull ring to displace away from the clamping jaw through the wire, and simultaneously compress the first spring.
[0012] Further, when the first pull ring displaces towards the clamping jaw, the clamping jaw can be pressed tightly against the surface of the needle; when the first pull ring displaces away from the clamping jaw, the clamping jaw moves away from the needle.
[0013] Further, a clamping jaw slot is provided on the side surface of the guide wire; the clamping jaw slot extends along the axial direction of the guide wire and is communicated with the annular mounting groove; the clamping jaw and the pull rod can be engaged in the clamping jaw slot.
[0014] Further, a hinge shaft is provided in the clamping jaw slot; the hinge shaft is arranged perpendicular to the axis of the guide wire; the clamping jaw is hingedly connected to the guide wire through the hinge shaft.
[0015] Further, a third pull ring is further provided outside the guide wire; the third pull ring is sleeved outside the guide wire and is fixedly connected to the unlocking handle; there are multiple wires, and multiple wires are simultaneously fixedly connected to the first pull ring and the third pull ring.
[0016] Further, one end of the unlocking handle is fixedly connected to the third pull ring, and the other end is slidably nested inside the operating handle.
[0017] The technical solution of the present utility model can at least achieve one of the following effects:
[0018] 1. For the percutaneous tracheostomy reverse puncture needle of the present utility model, the guide wire and the needle are connected through the clamping mechanism, and the clamping jaw of the clamping mechanism can be locked or unlocked through the action of the pull ring assembly; when the clamping jaw locks the needle, the needle can be sent into the human trachea through the guide wire, and then the needle is punctured from the inside to the outside, enabling internal tracheal perforation; ensuring the accuracy of the tracheostomy perforation position.
[0019] 2. For the percutaneous tracheostomy reverse puncture needle of the present utility model, on the premise of realizing internal puncture and perforation, subsequent operations such as skin dilation and placement of the tracheal catheter can be carried out through the puncture hole. On the premise of ensuring the accuracy of the tracheostomy position, the incision size of the patient's external tissue during tracheostomy can be minimized as much as possible.
[0020] 3. The reverse puncture needle for percutaneous tracheostomy of the present utility model displaces the first pull ring towards the needle tip through the elastic force of the first spring, thereby lifting the pull rod and the rotating part of the clamping jaw to form an obtuse angle. The elastic force of the first spring causes the clamping jaw to press tightly against the side of the needle tip, realizing the fixation of the puncture needle, and further enabling the puncture needle and the guide wire to remain connected during puncture; furthermore, pulling the first pull ring backward can separate the puncture needle from the guide wire after puncture.
[0021] In the present utility model, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the subsequent description, and some advantages can be made obvious from the description, or understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the content specifically pointed out in the description and the drawings. Brief Description of the Drawings
[0022] The drawings are only for the purpose of showing specific embodiments, and are not considered to be a limitation of the present utility model. Throughout the drawings, the same reference signs represent the same components.
[0023] Figure 1 It is a schematic structural diagram of the reverse puncture needle for percutaneous tracheostomy of the present utility model;
[0024] Figure 2 It is a schematic structural diagram of the puncture end of the reverse puncture needle for percutaneous tracheostomy of the present utility model;
[0025] Figure 3 It is a partial enlarged view of the clamping mechanism of the reverse puncture needle for percutaneous tracheostomy of the present utility model;
[0026] Figure 4 It is a schematic diagram of the open state of the clamping mechanism of the reverse puncture needle for percutaneous tracheostomy of the present utility model;
[0027] Figure 5 It is a schematic diagram of the separation state between the clamping mechanism and the needle tip of the reverse puncture needle for percutaneous tracheostomy of the present utility model;
[0028] Figure 6 It is a partial enlarged view of the guide wire of the present utility model;
[0029] Figure 7 It is a schematic structural diagram of the clamping jaw of the present utility model;
[0030] Figure 8 It is a front view of the clamping jaw of the present utility model;
[0031] Figure 9 It is a schematic structural diagram of the handle end of the reverse puncture needle for percutaneous tracheostomy of the present utility model;
[0032] Figure 10 This is a partial enlarged view of the handle end of the percutaneous tracheostomy reverse puncture needle of the present utility model.
[0033] Reference numerals:
[0034] 1 - Needle tip; 2 - Clamping mechanism; 3 - Guide wire; 4 - Unlock handle; 5 - Operating handle;
[0035] 101 - Positioning ring groove; 102 - Limiting boss; 103 - Intermediate through hole;
[0036] 201 - Claw; 202 - Pull rod; 203 - First pull ring; 204 - Pull wire; 205 - First spring; 206 - Second pull ring; 207 - Second spring; 208 - Third pull ring;
[0037] 2011 - Clamping part; 2012 - Rotating part; 2013 - Arc-shaped convex rib; 2014 - First hinge hole; 2015 - Second hinge hole;
[0038] 301 - Claw card slot; 302 - Annular mounting groove; 303 - Limiting hole; 304 - Hinge shaft;
[0039] 501 - Handle fixing part; 502 - Handle through hole. Specific embodiments
[0040] The preferred embodiments of the present utility model will be specifically described below with reference to the accompanying drawings. The accompanying drawings form a part of the present utility model and are used together with the embodiments of the present utility model to explain the principle of the present utility model, rather than to limit the scope of the present utility model.
[0041] Embodiment 1
[0042] A specific embodiment of the present utility model discloses a percutaneous tracheostomy reverse puncture needle, such as Figure 1 , Figure 2 including: a needle tip 1, a clamping mechanism 2, a guide wire 3, an unlock handle 4 and an operating handle 5; the needle tip 1 is arranged at one end of the guide wire 3, and is locked and unlocked with the guide wire 3 through the clamping mechanism 2; the operating handle 5 is fixedly installed at the other end of the guide wire 3; the clamping mechanism 2 includes: a claw assembly, a pull ring assembly and a pull wire 204; the claw assembly is used to lock the needle tip 1 so that the needle tip 1 and the guide wire 3 are fixed as a whole; the pull ring assembly is sleeved outside the guide wire 3, and by pulling the pull ring assembly, the claw assembly can be driven to unlock the needle tip 1; the unlock handle 4 is fixedly connected with the pull ring assembly.
[0043] In a specific embodiment of the present utility model, such as Figure 1, Figure 2 As shown in the figure, multiple groups of jaw components are circumferentially arranged on the side surface of the guide wire 3; preferably, four groups of jaw components are arranged at the end of the guide wire 3, and the four groups of jaw components surround the outside of the needle 1, and the needle 1 is circumferentially clamped and fixed by the four groups of jaw components; in the present invention, the needle 1 is clamped by multiple groups of jaw components, so as to realize the fixation of the guide wire 3 and the needle 1, forming an effect similar to that of a human hand pinching the needle 1. Furthermore, the pushing force applied to the bottom end of the needle 1 by the guide wire 3 can promote the needle 1 to penetrate out from the inside of the airway; preferably, during the needle puncture process, the puncture needle is arranged in the endoscope channel, and the angle can be adjusted through the endoscope, and the illumination and real-time video acquisition of the internal environment of the airway can be carried out, so as to adjust the puncture position and puncture angle of the needle 1.
[0044] Preferably, as Figure 5 shown, the upper end of the needle 1 is a sharp part, and a protruding limiting boss 102 is arranged at the lower end. Correspondingly, a limiting hole 303 cooperating with the limiting boss 102 is arranged at the end of the guide wire 3, so that the end surface of the guide wire 3 can apply a jacking force to the bottom end surface of the needle 1.
[0045] Preferably, the needle 1 is a cylindrical hollow needle provided with a middle through hole 103; the middle through hole 103 penetrates through the needle 1 along the axial direction of the needle 1; after the tracheal puncture is completed, a metal positioning wire can be inserted into the middle through hole 103 to locate the puncture point; the metal positioning wire is inserted into the needle 1 from the upper end and exits from the end, and is inserted into the trachea. Further, the puncture needle can be taken out from the outside by clamping, and the reaming operation of the tracheostomy can be assisted by the metal positioning wire.
[0046] Specifically, the guide wire 3 is made of a bendable and incompressible material, such as plastic or soft metal; the puncture needle is used in cooperation with the endoscope, and the guide wire 3 can move along with the movement of the endoscope.
[0047] In a specific embodiment of the present invention, as Figure 2 , Figure 3 , Figure 4 , Figure 5 shown, the jaw component includes: a clamping jaw 201 and a pull rod 202; multiple groups of the jaw components are arranged at equal intervals along the circumferential direction of the needle 1; the middle part of the clamping jaw 201 is hinged and installed at the end of the guide wire 3; one end of the clamping jaw 201 is used for clamping the needle 1, and the other end is hinged and connected to the pull rod 202.
[0048] Specifically, since the clamping jaw 201 is rotatably installed at the end of the guide wire 3, when the clamping jaw 201 rotates, the clamping part 2011 at its upper end can approach or move away from the needle 1.
[0049] Furthermore, as Figure 2 , Figure 3As shown in the figure, the pull - ring assembly includes: a first pull - ring 203, a wire 204, and a first spring 205; the first pull - ring 203 is sleeved outside the guide wire 3 and is hinged to the pull rod 202; when the first pull - ring 203 displaces along the axis direction of the guide wire 3, it can drive the pull rod 202 and the jaw 201 to rotate, and when the jaw 201 rotates, it can lock or unlock the needle 1.
[0050] Specifically, a plurality of hinge parts are fixedly arranged on the upper end surface of the first pull - ring 203 and are hinged to the pull rod 202 through the plurality of hinge parts; since the first pull - ring 203 is sleeved outside the guide wire 3, it can only slide along the axis direction of the guide wire 3; in implementation, the guide wire 3, the first pull - ring 203, the pull rod 202, and the jaw 201 form a movement mechanism similar to a crank - slider mechanism. When the first pull - ring 203 slides along the guide wire 3, it can drive the pull rod 202 and the jaw 201 to rotate. When the jaw 201 rotates, it can clamp and fix the needle 1 or loosen the needle 1 so that it can be separated from the guide wire 3.
[0051] Specifically, when the first pull - ring 203 is at the first limit position close to the needle 1, the pull rod 202 and the jaw 201 form an obtuse angle, and the jaw 201 clamps the needle 1, as Figure 2 shown; when the first pull - ring 203 is at the second limit position far from the needle 1, the pull rod 202 and the jaw 201 form 180°, and the jaw 201 is away from the needle 1, as Figure 4 、 Figure 5 shown.
[0052] In a specific implementation manner of the present utility model, as Figure 7 、 Figure 8 shown, the jaw 201 includes: a clamping part 2011, a rotating part 2012, and an arc - shaped convex rib 2013; the arc - shaped convex rib 2013 is arranged on the side of the clamping part 2011 facing the needle 1 and is engaged with the positioning ring groove on the surface of the needle 1; the rotating part 2012 is integrally connected with the clamping part 2011, and a first hinge hole 2014 is arranged at the connection part of the two. The jaw 201 is hinged to the guide wire 3 through the first hinge hole 2014; a second hinge hole 2015 is arranged at the end of the rotating part 2012, and the jaw 201 is hinged to the first pull - ring 203 of the pull - ring assembly through the second hinge hole 2015; when the pull - ring assembly displaces, it can pull the pull rod 202 and the jaw 201 to rotate.
[0053] As Figure 2 、 Figure 4 、 Figure 5 、 Figure 7As shown in the figure, the positioning ring grooves 101 are arranged on the outer surface of the needle 1, and there are two parallel ones arranged vertically; correspondingly, on one side wall surface of the clamping part 2011 facing the needle 1, there is an arc-shaped convex rib 2013 that matches the shape of the positioning ring groove 101; preferably, the arc-shaped convex rib 2013 is an arc-shaped convex rib; preferably, the longitudinal cross-sections of the positioning ring groove 101 and the arc-shaped convex rib are semi-circular, and the longitudinal cross-section is the cross-section extending along the axis direction of the needle 1.
[0054] Further, in order to realize the normal clamping effect of the clamping jaw 201 on the needle 1, in this embodiment, the first spring 205 is used to provide the driving force for the first pull ring 203 at the first limit position.
[0055] Specifically, the first spring 205 is sleeved outside the guide wire 3, and its spring force can push the first pull ring 203 to the first limit position; one end of the pull wire 204 is fixedly connected to the first pull ring 203, and the other end is fixedly connected to the unlocking handle 4; pulling the unlocking handle 4 can pull the first pull ring 203 from the first limit position to the second limit position through the pull wire 204.
[0056] During implementation, when the clamping jaw 201 is in contact with the surface of the needle 1 and the positioning ring groove is engaged with the arc-shaped convex rib, pushing the first pull ring 203 upward, the first pull ring 203 cannot push the clamping jaw 201 to rotate towards the direction close to the axis of the needle 1 through the pull rod 202. At this time, the first pull ring 203 is at the first limit position. When the first pull ring 203 is displaced away from the needle 1 along the axis of the guide wire 3 under the pulling force of the pull wire 204, the first spring 205 is compressed, and the first pull ring 203 can pull the clamping jaw 201 and the pull rod 202 to be in the same straight line, that is, the two are at 180°; when the pull rod 202 and the clamping jaw 201 are in the same straight line, the first pull ring 203 cannot continue to pull the pull rod 202 to displace, and the pulling force of the pull rod 202 on the clamping jaw 201 extends along the axis direction of the rotating part 2012 of the clamping jaw 201. Therefore, the clamping jaw 201 cannot continue to open, and the first pull ring 203 is at the second limit position.
[0057] That is to say, when the first pull ring 203 is at the first limit position, the clamping jaw 201 is pressed against the surface of the needle 1, and the positioning ring groove is engaged with the arc-shaped convex rib 2013, that is, the clamping jaw 201 realizes the clamping effect on the needle 1; when the first pull ring 203 is at the second limit position, the clamping jaw 201 is away from the needle 1, and multiple card group components remain in the open state, as Figure 5 shown.
[0058] Further, as Figure 2 、 Figure 3As shown, the first spring 205 is normally in a compressed state. The elastic force of the first spring 205 pushes the first pull ring 203 to a first extreme position, making the pull rod 202 and the clamping jaws 201 form an obtuse angle. The clamping part 2011 of the clamping jaws 201 fits against and presses tightly against the surface of the needle 1. At this time, the elastic thrust of the first spring 205 can maintain the clamping effect of multiple clamping jaws 201 on the needle 1, and the needle 1 is in a locked state.
[0059] Further, as Figure 4 , Figure 5 shown, when the first spring 205 is further compressed to its maximum compression amount, the first pull ring 203 is at a second extreme position. At this time, the pull rod 202 and the clamping jaws 201 are both pressed into the clamping jaw slot 301 and the two form 180°. The clamping jaws 201 and the needle 1 form an acute angle to release the needle 1, realizing the unlocking of the clamping jaws 201 on the needle 1.
[0060] It should be noted that when the first spring 205 is at its maximum compression amount, it is not that it cannot be further compressed by itself, but that it is restricted by the pulling force of the pull rod 202 and the clamping jaws 201 and cannot be further compressed. That is to say, when the first pull ring 203 pulls the pull rod 202 and the clamping jaws 201 to be coaxial, the first pull ring 203 cannot continue to displace in the direction away from the needle 1, and the first spring 205 cannot be further compressed either.
[0061] Further, as Figure 6 shown, the side surface of the guide wire 3 is provided with a clamping jaw slot 301 and an annular installation groove 302.
[0062] Specifically, the annular installation groove 302 is an annular groove provided on the outer surface of the guide wire 3. The first pull ring 203 is arranged in the annular installation groove 302 and can slide along the surface of the annular installation groove 302. The first spring 205 is arranged in the annular installation groove 302. One end of the first spring 205 is fixedly connected to the first pull ring 203, and the other end abuts against or is fixedly connected to the end face of the annular installation groove 302.
[0063] Specifically, the clamping jaw slot 301 extends along the axial direction of the guide wire 3 and is communicated with the annular installation groove 302. A hinge shaft is provided at the upper end of the clamping jaw slot 301, and a first hinge hole 2014 is provided in the middle of the clamping jaws 201. The clamping jaws 201 are rotationally installed on the hinge shaft through the first hinge hole 2014 to realize the hinge connection between the clamping jaws 201 and the guide wire 3.
[0064] Specifically, a second hinge hole 2015 is provided at the end of the rotating part 2012 of the jaw 201, and is hinged to the upper end of the pull rod 202 through the second hinge hole 2015; further, the lower end of the pull rod 202 is hingedly connected to the hinge part on the upper end surface of the first pull ring 203.
[0065] Preferably, the length of the jaw slot 301 is greater than the length of the rotating part 2012 of the jaw 201, and at the same time less than the sum of the length of the rotating part 2012 and the length of the pull rod 202.
[0066] Further, as Figure 6 shown, a hinge shaft 304 is fixedly installed in the jaw slot 301; the hinge shaft 304 is arranged perpendicular to the axis of the guide wire 3, and a plurality of hinge shafts 304 are arranged in an array along the circumferential direction of the guide wire 3. Specifically, the jaw 201 is rotatably installed on the hinge shaft 304; preferably, the jaw 201 and the hinge shaft 304 are relatively rotated by means of clearance fit.
[0067] Preferably, in order to facilitate the displacement of the first pull ring 203 and minimize the bending of the pull wire 204; a second pull ring 206 is also sleeved outside the guide wire 3, the second pull ring 206 is arranged parallel to the first pull ring 203, and the inner wall surface of the second pull ring 206 fits with the outer surface of the guide wire 3, and the inner wall surface of the first pull ring 203 fits with the annular surface of the annular installation groove 302.
[0068] Further, since the tracheal puncture is located inside the human body, therefore, the first pull ring 203 or the pull wire 204 cannot be directly operated; in this embodiment, as Figure 9 、 Figure 10 shown, the pull ring assembly further includes: a second spring 207 and a third pull ring 208.
[0069] In a specific embodiment of the present utility model, as Figure 9 、 Figure 10 shown, the third pull ring 208 is sleeved outside the guide wire 3 and is arranged at the operating end of the tracheostomy reverse puncture needle.
[0070] Specifically, as Figure 9 、 Figure 10 shown, the third pull ring 208 is fixedly connected to the unlocking handle 4.
[0071] Specifically, one end of the pull wire 204 passes through the second pull ring 206 and is fixedly connected to the first pull ring 203, and the other end is fixedly connected to the third pull ring 208; thus, by pulling the unlocking handle 4, the third pull ring 208 and the first pull ring 203 can be simultaneously pulled to displace, and then the first pull ring 203 can drive a plurality of jaws 201 to open, realizing the release of the needle 1.
[0072] Specifically, the end of the guide wire 3 is fixedly installed with an operating handle 5. By pulling or pushing the operating handle 5, the guide wire 3 can be displaced, and thus the needle 1 can be pushed for puncture in the locked state. When the operating handle 5 is pulled backward in the unlocked state, the guide wire 3 can be separated from the needle 1.
[0073] Specifically, a handle fixing part 501 is arranged at the end of the operating handle 5. The handle fixing part 501 is of a cylindrical structure, and the handle fixing part 501 and the end of the guide wire 3 are fixed into one body by welding or bonding.
[0074] Specifically, the second spring 207 is arranged between the third pull ring 208 and the operating handle 5. When the third pull ring 208 is displaced by pulling the unlocking handle 4, the second spring 207 can be compressed. The second spring 207 is used to assist in realizing the positioning function of the pull ring assembly on the claw assembly and maintaining the clamping force of the clamping jaw 201 on the needle 1 in the locked state.
[0075] Furthermore, in order to facilitate the operation of medical staff on the reverse puncture needle for percutaneous tracheostomy in this embodiment, in this embodiment, both the operating handle 5 and the unlocking handle 4 are of an annular structure.
[0076] Furthermore, two handle through holes 502 are arranged on the operating handle 5, and the unlocking handle 4 is nested and installed inside the operating handle 5 through the handle through holes 502.
[0077] During implementation, the guide wire 3 and the needle 1 clamped and fixed by the claw assembly on the guide wire 3 are sent into the airway by holding the operating handle 5. Then, by pushing the operating handle 5, the needle 1 can be promoted for puncture. When puncturing, the contact end surface between the guide wire 3 and the needle 1 provides the propulsion force required for puncture. After the puncture is completed, the needle 1 and the guide wire 3 need to be separated. When separating, while maintaining the holding action on the operating handle 5, the unlocking handle 4 can be hooked by a single finger, and then by pulling the unlocking handle 4 with the finger, the third pull ring 208, the pull wire 204, and the first pull ring 203 can be displaced synchronously, and then the clamping jaw 201 can be pulled to rotate to realize the unlocking operation of the needle 1. After the needle 1 is unlocked, pulling the operating handle 5 backward can separate the guide wire 3 from the needle 1, and the reverse puncture needle for tracheostomy can be taken out, and then medical staff can perform subsequent tracheostomy operations.
[0078] During implementation, insert the reverse needle for percutaneous tracheostomy of the present utility model into the inner catheter of the tracheal fibroscope; a lighting device and a camera for collecting information on the internal environment of the trachea are provided at the end of the tracheal fibroscope; when performing tracheal puncture, use the tracheal fibroscope to enter the trachea, see the puncture point in the trachea through the camera, and since the catheter of the tracheal fibroscope has a bending function, after adjusting the angle of its port, puncture the needle 1 reversely from the trachea to the outside of the skin, so as to achieve precise positioning of the tracheal incision. During tracheostomy, remove the puncture needle and at the same time insert a surgical forceps into the puncture hole for reaming, and after reaming, install a tracheal cannula for mechanical ventilation.
[0079] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A reverse puncture needle for percutaneous tracheostomy, characterized in that: include: A needle (1), a clamping mechanism (2), a guide wire (3), an unlocking handle (4) and an operating handle (5); the needle (1) is arranged at one end of the guide wire (3), and is locked and unlocked with the guide wire (3) through the clamping mechanism (2); the operating handle (5) is fixedly mounted on the other end of the guide wire (3); the clamping mechanism (2) comprises: a clamping jaw (201), a pull rod (202), a first pull ring (203) and a pull wire (204); the center of the clamping jaw (201) The clamp (201) is hingedly mounted on the end of the guide wire (3); one end of the clamp (201) is used to clamp the needle (1), and the other end is hingedly connected to one end of the pull rod (202); the other end of the pull rod (202) is hingedly connected to the first pull ring (203); the first pull ring (203) is fixedly connected to the unlocking handle (4) through a pull wire (204); when the unlocking handle (4) drives the first pull ring (203) to move up or down, the clamp (201) can clamp or release the needle (1).
2. The reverse puncture needle for percutaneous tracheostomy according to claim 1, characterized in that: A plurality of the clamping jaws (201) are arranged at equal intervals along the circumferential direction of the needle head (1).
3. The reverse puncture needle for percutaneous tracheostomy according to claim 2, characterized in that: An annular mounting groove (302) is provided on the outer side of the guide wire (3); the first pull ring (203) is arranged in the annular mounting groove (302) and is capable of sliding relative to the guide wire (3).
4. The reverse puncture needle for percutaneous tracheostomy according to claim 3, characterized in that: A first spring (205) is arranged between the first pull ring (203) and the end surface of the annular mounting groove (302); the first spring (205) can push the first pull ring (203) to move in a direction close to the clamping jaw (201).
5. The reverse puncture needle for percutaneous tracheostomy according to claim 4, characterized in that: One end of the pull wire (204) is fixedly connected to the first pull ring (203), and the other end is fixedly connected to the unlocking handle (4); the unlocking handle (4) can pull the first pull ring (203) to move away from the clamping claw (201) through the pull wire (204), and compress the first spring (205) at the same time.
6. The reverse puncture needle for percutaneous tracheostomy according to claim 5, characterized in that: When the first pull ring (203) is displaced in a direction approaching the clamping jaw (201), the clamping jaw (201) can be pressed against the surface of the needle (1); when the first pull ring (203) is displaced in a direction away from the clamping jaw (201), the clamping jaw (201) is away from the needle (1).
7. The reverse puncture needle for percutaneous tracheostomy according to claim 6, characterized in that: A clamping jaw slot (301) is provided on the side of the guide wire (3); the clamping jaw slot (301) extends along the axial direction of the guide wire (3) and is connected to the annular mounting slot (302); the clamping jaw (201) and the pull rod (202) can be clamped into the clamping jaw slot (301).
8. The reverse puncture needle for percutaneous tracheostomy according to claim 7, characterized in that: A hinge shaft (304) is arranged in the clamping jaw slot (301); the hinge shaft (304) is arranged perpendicular to the axis of the guide wire (3); and the clamping jaw (201) is hingedly connected to the guide wire (3) via the hinge shaft (304).
9. The reverse puncture needle for percutaneous tracheostomy according to claim 8, characterized in that: A third pull ring (208) is also provided on the outside of the guide wire (3); the third pull ring (208) is sleeved on the outside of the guide wire (3) and is fixedly connected to the unlocking handle (4); a plurality of pull wires (204) are provided, and the plurality of pull wires (204) are fixedly connected to the first pull ring (203) and the third pull ring (208) at the same time.
10. The reverse puncture needle for percutaneous tracheostomy according to claim 9, characterized in that: One end of the unlocking handle (4) is fixedly connected to the third pull ring (208), and the other end is slidably nested inside the operating handle (5).