ECMO intubation tube

Abstract

The invention relates to the technical field of medical instruments, and discloses an ECMO cannula which comprises a cannula body, a connecting sleeve arranged on one side of the cannula body, a needle arranged on one side of the connecting sleeve, and a fixing assembly arranged on the cannula body and comprising a fixing sleeve and a locking piece, the fixing sleeve is located on the outer side of the cannula body, the locking piece comprises a rotating sleeve, and the rotating sleeve is rotationally connected into the fixing sleeve; a movable plate is arranged on the inner side of the rotating sleeve, and an extrusion plate is arranged on one side of the movable plate. The ECMO cannula fixing device has the beneficial effects that the ECMO cannula can be stably fixed through the fixing assembly, so that the situation that normal use of the ECMO cannula is affected due to the fact that the ECMO cannula is fixed too tightly or too loosely can be avoided, when the ECMO cannula needs to be rotationally adjusted, the ECMO cannula can be rotated without being fixed, and therefore it is avoided that in the rotating process, the ECMO cannula is fixed too tightly or too loosely. And the position of the ECMO intubation tube is moved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an ECMO cannula. Background Art

[0002] An ECMO cannula refers to the operation process of inserting a special catheter into large blood vessels (such as veins and arteries) of the human body through percutaneous puncture or surgical incision to establish an extracorporeal circulation path, enabling blood to be drawn out of the body, and after being oxygenated and carbon dioxide removed through an ECMO device, then transfused back into the body. During the use of an ECMO cannula, in order to avoid accidental external contact causing the ECMO cannula to move, it needs to be fixed. During the fixation process of the ECMO cannula, if the fixing force is too tight, it will compress the ECMO cannula, which will in turn affect the normal flow of blood. If the fixing force is too loose, it may cause the ECMO cannula to displace, and thus cannot provide effective fixation for the ECMO cannula. Moreover, when using ultrasound to observe the position of the cannula in the blood vessel in real time, when it is found that the cannula deviates to one side of the blood vessel, this will affect blood flow or there is a risk of damaging the blood vessel wall. It is necessary to slightly rotate the cannula under ultrasound guidance to make it return to the center position of the blood vessel to ensure smooth blood flow and reduce irritation to the blood vessel wall. When rotating the cannula, the fixation of the cannula needs to be released first, which not only increases the complexity of the operation, but also when the cannula is released from fixation, when rotating the cannula, it will cause the cannula to displace, and thus will cause the depth of the cannula to change. Summary of the Invention

[0003] In view of the above problems existing in the existing ECMO cannulas, the present invention is proposed.

[0004] Therefore, the problems to be solved by the present invention are that the ECMO cannula cannot be effectively fixed, and when rotating and adjusting the ECMO cannula, the position of the ECMO cannula will move.

[0005] To solve the above technical problems, the present invention provides the following technical solution: An ECMO cannula, which includes a cannula, a connection sleeve is arranged on one side of the cannula, and a needle is arranged on one side of the connection sleeve; A fixing assembly is arranged on the cannula, including a fixing sleeve and a locking member. The fixing sleeve is located outside the cannula. The locking member includes a rotating sleeve, the rotating sleeve is rotatably connected to the fixing sleeve. An activity plate is arranged inside the rotating sleeve. An extrusion plate is arranged on one side of the activity plate. A groove corresponding to the extrusion plate is formed on the activity plate. A positioning column is fixed on one side of the extrusion plate. One end of the positioning column penetrates to one side of the activity plate and is movably connected inside the activity plate. A limiting thorn is fixed on one side of the extrusion plate; The fixed component further includes a rotating member, the rotating member includes a rotating ring, the rotating ring is rotatably connected to one side of the rotating sleeve, a guide shaft is fixed to one side of the movable plate, a guide groove is formed in the rotating ring, the guide shaft slides in the guide groove, a rotating circle is rotatably connected to the outside of the rotating ring, a through groove is formed in the rotating circle, a plug rod is arranged in the through groove, a jack is formed in the rotating ring, the bottom end of the plug rod is engaged with the jack, and a handle is fixed to the outside of the rotating ring; The fixed component further includes a pushing member, the pushing member includes a push rod, the push rod is located in the jack and the top end thereof contacts the plug rod, a pressing rod is inserted into one side of the rotating ring, the bottom end of the push rod is inclined, the end of the pressing rod contacts the inclined surface at the bottom end of the push rod, an arc-shaped plate is fixed to one end of the pressing rod, a stress rod is clamped in the arc-shaped plate, and a pressing block is fixed to one end of the positioning column.

[0006] As a preferred embodiment of the ECMO cannula of the present invention, wherein: the fixed component further includes a connecting member, the connecting member includes a limiting rod, a movable groove is formed in the rotating ring, the limiting rod is located in the movable groove, a pressing groove is formed in the push rod, one end of the limiting rod is inclined and located in the pressing groove, a limiting hole is formed in one side of the rotating sleeve, the limiting rod corresponds to the limiting hole, a connecting block is fixed to the top of the limiting rod, and a first spring is fixed to one side of the connecting block.

[0007] As a preferred embodiment of the ECMO cannula of the present invention, wherein: the fixed component further includes a rotating member, the rotating member includes a rotating rod, a rotating groove is formed in the rotating sleeve, a fixed shaft is fixed in the rotating groove, the rotating rod is rotatably connected to the outside of the fixed shaft, a torsion spring is fixed to the outside of the fixed shaft, the other end of the torsion spring is fixed to the inner side of the rotating rod, a stress block is fixed to the top end of the positioning column, and the stress block is inclined.

[0008] As a preferred embodiment of the ECMO cannula of the present invention, wherein: the fixed component further includes a limiting member, the limiting member includes a movable rod, the movable rod is inserted into the handle, a chamber is formed in the movable rod, a limiting column is arranged in the chamber, a second spring is fixed to one end of the limiting column, a positioning hole is formed in the plug rod, and the limiting column corresponds to the positioning hole.

[0009] As a preferred embodiment of the ECMO cannula of the present invention, wherein: a third spring is fixed to one side of the pressing plate, the third spring is sleeved on the outside of the positioning column and the other end thereof is fixed to the movable plate.

[0010] As a preferred embodiment of the ECMO cannula of the present invention, wherein: a fourth spring is fixed to the top end of the insertion rod, and the top end of the fourth spring is fixed to the inner wall of the through groove.

[0011] As a preferred embodiment of the ECMO cannula of the present invention, wherein: a support frame is fixed to one side of the rotating ring, the extrusion rod is movably connected within the support frame, a fifth spring is fixed to one side of the support frame, and the other end of the fifth spring is fixed to the arc-shaped plate.

[0012] As a preferred embodiment of the ECMO cannula of the present invention, wherein: a support rod is fixed to the inner side of the rotating sleeve, and the force-bearing rod is movably connected within the support rod.

[0013] As a preferred embodiment of the ECMO cannula of the present invention, wherein: there are multiple limiting holes, which are evenly distributed in an arc shape on one side of the rotating sleeve.

[0014] As a preferred embodiment of the ECMO cannula of the present invention, wherein: there are multiple limiting spines, which are evenly distributed in a rectangular shape on one side of the extrusion plate, and the limiting spines are inclined.

[0015] The beneficial effects of the present invention are as follows: Through the setting of the fixing component, stable fixation can be provided for the ECMO cannula, thereby avoiding the situation that the over-tight or over-loose fixation of the ECMO cannula will affect its normal use. And when it is necessary to rotate and adjust the ECMO cannula, it can be rotated without releasing the fixation of the ECMO cannula, thus avoiding the situation that the position of the ECMO cannula will move during the rotation process. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them: Figure 1 It is the overall view of the ECMO cannula.

[0017] Figure 2 It is the structural diagram of the fixing sleeve of the ECMO cannula.

[0018] Figure 3 It is the side view structural diagram of the fixing sleeve of the ECMO cannula.

[0019] Figure 4 It is the structural diagram of the locking member of the ECMO cannula.

[0020] Figure 5 It is the sectional structural diagram of the rotating sleeve of the ECMO cannula.

[0021] Figure 6 For the ECMO cannula Figure 5 The partial enlarged structure diagram at position A in it.

[0022] Figure 7 For the ECMO cannula Figure 5 The partial enlarged structure diagram at position B in it.

[0023] Figure 8 It is a partial sectional structure diagram of another view of the rotating sleeve of the ECMO cannula.

[0024] Figure 9 For the ECMO cannula Figure 8 The partial enlarged structure diagram at position C in it.

[0025] Figure 10 It is a side view structure diagram of the rotating sleeve of the ECMO cannula.

[0026] In the figure: 101, cannula; 102, connecting sleeve; 103, needle; 200, fixing component; 201, fixing sleeve; 202, locking part; 202a, rotating sleeve; 202b, movable plate; 202c, pressing plate; 202b-1, groove; 202d, positioning column; 202e, limiting spike; 203, rotating part; 203a, rotating ring; 203b, guiding shaft; 203a-1, guiding groove; 203c, rotating circle; 203c-1, through groove; 203d, inserting rod; 203a-2, inserting hole; 203e, handle; 204, pushing part; 204a, push rod; 204b, pressing rod; 204c, arc-shaped plate; 204d, stress rod; 204e, pressing block; 205, connecting part; 205a, limiting rod; 203a-3, movable groove; 204a-1, pressing groove; 202a-1, limiting hole; 205b, connecting block; 205c, first spring; 206, rotating part; 206a, rotating rod; 202a-2, rotating groove; 206b, fixing shaft; 206c, torsion spring; 206d, stress block; 207, limiting part; 207a, movable rod; 207a-1, chamber; 207b, limiting column; 207c, second spring; 203d-1, positioning hole; 202f, third spring; 203f, fourth spring; 203g, support frame; 203h, fifth spring; 203i, support rod. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0028] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0029] Secondly, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures, or characteristics that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or selectively exclusive embodiment with other embodiments.

[0030] Embodiment 1 Referring to Figures 1 - 7 , which is the first embodiment of the present invention. This embodiment provides an ECMO cannula. The ECMO cannula includes a cannula 101. A connecting sleeve 102 is provided on one side of the cannula 101, and a needle 103 is provided on one side of the connecting sleeve 102.

[0031] The other end of the cannula 101 is connected to an ECMO device. The connecting sleeve 102 is used to connect the needle 103 to the cannula 101, and the needle 103 is used to insert into the large blood vessel of the patient's body. This is prior art and will not be elaborated further in this solution.

[0032] A fixing assembly 200 is provided on the cannula 101 and includes a fixing sleeve 201 and a locking member 202. The fixing sleeve 201 is located outside the cannula 101. The locking member 202 includes a rotating sleeve 202a. The rotating sleeve 202a is rotatably connected inside the fixing sleeve 201. An activity plate 202b is provided inside the rotating sleeve 202a. A pressing plate 202c is provided on one side of the activity plate 202b. A groove 202b-1 corresponding to the pressing plate 202c is formed on the activity plate 202b. A positioning post 202d is fixed on one side of the pressing plate 202c. One end of the positioning post 202d penetrates to one side of the activity plate 202b and is movably connected inside the activity plate 202b. A limiting thorn 202e is fixed on one side of the pressing plate 202c.

[0033] A sticky strap is fixed at the bottom of the fixing sleeve 201 for sticking the fixing sleeve 201 to a specified position on the patient's body. The number of the activity plates 202b and the pressing plates 202c is four each, and they are evenly distributed in a ring inside the rotating sleeve 202a. The activity plates 202b and the pressing plates 202c are both arc-shaped.

[0034] When fixing the intubation tube 101, the movable plate 202b drives the pressing plate 202c to move towards the intubation tube 101. When the pressing plate 202c contacts the intubation tube 101, it receives a reverse thrust from the intubation tube 101, and the pressing plate 202c will move into the groove 202b-1. When the pressing plate 202c completely enters the groove 202b-1, the movable plate 202b will stop moving. At this time, the intubation tube 101 can be fixed by the pressing plate 202c, and the fixing force is moderate, not too tight or too loose to affect the normal use of the intubation tube 101.

[0035] Through the setting of the limiting spurs 202e, it is used to increase the friction between the pressing plate 202c and the intubation tube 101, so as to further increase the stability when the intubation tube 101 is fixed and avoid the situation that the intubation tube 101 moves.

[0036] There are three positioning posts 202d on one pressing plate 202c, which are evenly distributed in a straight line on one side of the pressing plate 202c. Through the setting of the positioning posts 202d, it is used to position the pressing plate 202c and avoid the situation that the pressing plate 202c deviates when moving.

[0037] The fixing assembly 200 further includes a rotating member 203. The rotating member 203 includes a rotating ring 203a. The rotating ring 203a is rotatably connected to one side of the rotating sleeve 202a. One side of the movable plate 202b is fixed with a guide shaft 203b. A guide groove 203a-1 is formed on the rotating ring 203a. The guide shaft 203b slides in the guide groove 203a-1. The outer side of the rotating ring 203a is rotatably connected to a rotating circle 203c. A through groove 203c-1 is formed on the rotating circle 203c. A plug rod 203d is arranged in the through groove 203c-1. A jack 203a-2 is formed on the rotating ring 203a. The bottom end of the plug rod 203d is engaged with the jack 203a-2. A handle 203e is fixed on the outer side of the rotating ring 203a.

[0038] The number of the guide shafts 203b corresponds to the movable plate 202b. The guide groove 203a-1 is arc-shaped. When the plug rod 203d is engaged with the jack 203a-2, the rotating circle 203c and the rotating ring 203a are connected through their cooperation, so that when the rotating circle 203c rotates, it can drive the rotating ring 203a to rotate.

[0039] Rotating the handle 203e drives the rotating circle 203c to rotate. The rotating circle 203c drives the rotating ring 203a to rotate through the cooperation of the plug rod 203d and the jack 203a-2. When the rotating ring 203a rotates, it will make the guide shaft 203b slide in the guide groove 203a-1. Through their cooperation, the movable plate 202b can be driven to move, so that the movable plate 202b can drive the pressing plate 202c to move.

[0040] A stabilizing shaft is fixed on the side of the movable plate 202b opposite to the guiding shaft 203b. One side of the rotating sleeve 202a is in a closed state and is provided with a stabilizing groove. The stabilizing shaft slides in the stabilizing groove, and the cooperation between the two is used to limit the moving track of the movable plate 202b so that it will not rotate when moving.

[0041] The fixing assembly 200 further includes a pushing member 204. The pushing member 204 includes a push rod 204a. The push rod 204a is located in the insertion hole 203a-2, and the top end thereof contacts the insertion rod 203d. One side of the rotating ring 203a is inserted with a pressing rod 204b. The bottom end of the push rod 204a is inclined, and the end of the pressing rod 204b contacts the inclined surface at the bottom end of the push rod 204a. One end of the pressing rod 204b is fixed with an arc-shaped plate 204c, and a stress rod 204d is clamped in the arc-shaped plate 204c. One end of the positioning column 202d is fixed with a pressing block 204e.

[0042] One side of the pressing block 204e is inclined. One end of the stress rod 204d located inside the arc-shaped plate 204c is T-shaped, and a T-shaped groove is provided inside the arc-shaped plate 204c.

[0043] When the pressing plate 202c moves into the groove 202b-1, the positioning column 202d will drive the pressing block 204e to press the stress rod 204d, thereby pushing the stress rod 204d and the arc-shaped plate 204c to move, and driving the pressing rod 204b to press the inclined surface at the bottom end of the push rod 204a through the arc-shaped plate 204c, so that the push rod 204a moves upward and pushes the insertion rod 203d upward, separating the insertion rod 203d from the insertion hole 203a-2. In this way, the rotating ring 203c can be separated from the rotating ring 203a. Furthermore, after the fixing of the intubation tube 101 is completed, the rotating ring 203c cannot drive the rotating ring 203a to rotate when rotating, thereby avoiding the situation that the excessive rotation angle of the rotating ring 203a will cause the fixing force of the intubation tube 101 to be too tight.

[0044] Embodiment 2 Refer to Figures 3 - 9 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0045] Specifically, the fixing assembly 200 further includes a connecting member 205. The connecting member 205 includes a limiting rod 205a. An activity groove 203a-3 is provided on the rotating ring 203a. The limiting rod 205a is located in the activity groove 203a-3. A pressing groove 204a-1 is provided on the push rod 204a. One end of the limiting rod 205a is inclined and is located in the pressing groove 204a-1. A limiting hole 202a-1 is provided on one side of the rotating sleeve 202a. The limiting rod 205a corresponds to the limiting hole 202a-1. A connecting block 205b is fixed at the top of the limiting rod 205a, and a first spring 205c is fixed on one side of the connecting block 205b.

[0046] When the push rod 204a moves upward, it will squeeze the end slope of the limit rod 205a through the squeezing groove 204a-1, thereby pushing the limit rod 205a to move, so that the limit rod 205a enters the limit hole 202a-1. Through the cooperation of the two, the rotating ring 203a and the rotating sleeve 202a can be connected, so as to prevent the rotating ring 203a from rotating, thereby avoiding the situation that the fixing force of the intubation tube 101 changes.

[0047] When the push rod 204a moves downward to reset, the connecting block 205b can be pushed to move by the first spring 205c, so that the connecting block 205b drives the limit rod 205a to separate from the limit hole 202a-1.

[0048] Specifically, the fixing assembly 200 further includes a rotating member 206. The rotating member 206 includes a rotating rod 206a. A rotating groove 202a-2 is formed on the rotating sleeve 202a. A fixing shaft 206b is fixed in the rotating groove 202a-2. The rotating rod 206a is rotatably connected to the outside of the fixing shaft 206b. A torsion spring 206c is fixed to the outside of the fixing shaft 206b. The other end of the torsion spring 206c is fixed to the inside of the rotating rod 206a. A force-receiving block 206d is fixed to the top end of the positioning post 202d, and the force-receiving block 206d is inclined.

[0049] The bottom end of the rotating rod 206a is arc-shaped. The rotating rod 206a has a certain rotating space in the rotating groove 202a-2. The number of the force-receiving blocks 206d is two, which are respectively located on both sides of the top end of the positioning post 202d. The force-receiving blocks 206d are fixed on the positioning post 202d at the middle position.

[0050] When the intubation tube 101 needs to be rotationally adjusted, only the rotating rod 206a needs to be rotated. At this time, the bottom end of the rotating rod 206a will contact the slope of the force-receiving block 206d and apply a downward thrust to the force-receiving block 206d. The positioning post 202d and the pressing plate 202c are driven to move through the force-receiving block 206d, so that the pressing plate 202c increases the appropriate fixing force on the intubation tube 101. At this time, the rotating rod 206a will contact the inner wall of the rotating groove 202a-2. When the rotating rod 206a continues to rotate, the rotating sleeve 202a can be pushed to rotate, so that the rotating sleeve 202a drives the intubation tube 101 to rotate through the cooperation of the pressing plate 202c, so that the intubation tube 101 can be rotationally adjusted. And during the adjustment process, there is no need to release the fixation of the intubation tube 101, which can reduce the complexity of the operation and avoid the situation that the intubation tube 101 will be displaced during the rotational adjustment process.

[0051] The fixing shaft 206b is used to position the rotating rod 206a, and the torsion spring 206c is used to reset the rotated rotating rod 206a.

[0052] Specifically, the fixing component 200 further includes a limiting member 207. The limiting member 207 includes a movable rod 207a. The movable rod 207a is inserted into the handle 203e. A chamber 207a-1 is formed on the movable rod 207a. A limiting post 207b is arranged in the chamber 207a-1. A second spring 207c is fixed to one end of the limiting post 207b. A positioning hole 203d-1 is formed on the insertion rod 203d. The limiting post 207b corresponds to the positioning hole 203d-1.

[0053] The end of the limiting post 207b is arc-shaped. The movable rod 207a is closely and movably connected inside the handle 203e. The bottom end of the movable rod 207a is inserted into the insertion rod 203d. When the insertion rod 203d moves upward and separates from the insertion hole 203a-2, the limiting post 207b will coincide with the positioning hole 203d-1. At this time, a thrust is applied to the limiting post 207b through the second spring 207c, so that the limiting post 207b is engaged with the positioning hole 203d-1. The position of the insertion rod 203d can be locked through the cooperation of the two, so that the insertion rod 203d can continue to be separated from the insertion hole 203a-2.

[0054] Specifically, a third spring 202f is fixed to one side of the pressing plate 202c. The third spring 202f is sleeved outside the positioning post 202d and is fixed to the movable plate 202b at the other end.

[0055] The third spring 202f is used to apply a thrust to the pressing plate 202c, so that the pressing plate 202c can be separated from the inside of the groove 202b-1 when it is not in contact with the insertion tube 101.

[0056] Specifically, a fourth spring 203f is fixed to the top end of the insertion rod 203d. The top end of the fourth spring 203f is fixed to the inner wall of the through groove 203c-1.

[0057] After the insertion rod 203d is locked in contact, a thrust is applied to it through the fourth spring 203f to reset it.

[0058] Embodiment 3 Refer to Figures 1 - 10 , this is the third embodiment of the present invention, and this embodiment is based on the first two embodiments.

[0059] Specifically, a support frame 203g is fixed to one side of the rotating ring 203a. The extrusion rod 204b is movably connected inside the support frame 203g. A fifth spring 203h is fixed to one side of the support frame 203g. The other end of the fifth spring 203h is fixed to the arc-shaped plate 204c.

[0060] The fifth spring 203h is used to apply a thrust to the arc-shaped plate 204c so that it can reset after moving.

[0061] Specifically, a support rod 203i is fixed inside the rotating sleeve 202a, and the force-bearing rod 204d is movably connected inside the support rod 203i.

[0062] The support rod 203i is used to support and position the force-bearing rod 204d.

[0063] Specifically, there are multiple limiting holes 202a-1, which are evenly distributed in an arc shape on one side of the rotating sleeve 202a.

[0064] Through the arrangement of multiple limiting holes 202a-1, the limiting rod 205a can be engaged with the limiting holes 202a-1 at any angle of rotation of the rotating ring 203a.

[0065] Specifically, there are multiple limiting protrusions 202e, which are evenly distributed in a rectangular shape on one side of the pressing plate 202c, and the limiting protrusions 202e are inclined.

[0066] The inclined directions of the limiting protrusions 202e at both ends on one side of the pressing plate 202c are opposite, so that different reverse limiting forces can be formed on the intubation tube 101.

[0067] When in use, when it is necessary to fix the intubation tube 101, rotating the handle 203e drives the rotating ring 203c to rotate. The rotating ring 203c drives the rotating ring 203a to rotate through the cooperation of the insertion rod 203d and the insertion hole 203a-2. When the rotating ring 203a rotates, the guide shaft 203b slides in the guide groove 203a-1, and the movable plate 202b can be driven to move through the cooperation of the two.

[0068] At this time, the movable plate 202b drives the pressing plate 202c to move towards the intubation tube 101. When the pressing plate 202c contacts the intubation tube 101, under the reverse thrust of the intubation tube 101, the pressing plate 202c will move into the inside of the groove 202b-1. When the pressing plate 202c completely enters the inside of the groove 202b-1, the positioning column 202d will drive the pressing block 204e to squeeze the force-bearing rod 204d, thereby pushing the force-bearing rod 204d and the arc-shaped plate 204c to move, and driving the pressing rod 204b to squeeze the inclined surface at the bottom end of the push rod 204a through the arc-shaped plate 204c, so that the push rod 204a moves upward, and the insertion rod 203d is pushed upward to separate the insertion rod 203d from the insertion hole 203a-2, thereby separating the rotating ring 203c from the rotating ring 203a.

[0069] At this time, the intubation tube 101 can be fixed by the pressing plate 202c. After the intubation tube 101 is fixed, the rotating ring 203c cannot drive the rotating ring 203a to rotate when rotating, so as to avoid the situation that the excessive rotation angle of the rotating ring 203a will cause the fixing force on the intubation tube 101 to be too tight. Furthermore, the fixing force on the intubation tube 101 is moderate, and it will not be too tight or too loose to affect the normal use of the intubation tube 101.

[0070] When the intubation tube 101 needs to be rotationally adjusted, only the rotating rod 206a needs to be rotated. At this time, the bottom end of the rotating rod 206a will contact the inclined surface of the force-receiving block 206d and apply a downward thrust to the force-receiving block 206d. By driving the positioning column 202d and the pressing plate 202c to move through the force-receiving block 206d, the pressing plate 202c can increase the appropriate fixing force on the intubation tube 101. At this time, the rotating rod 206a will contact the inner wall of the rotating groove 202a-2. When the rotating rod 206a continues to rotate, it can push the rotating sleeve 202a to rotate, so that the rotating sleeve 202a drives the intubation tube 101 to rotate through the cooperation of the pressing plate 202c. In this way, the intubation tube 101 can be rotationally adjusted, and during the adjustment process, there is no need to release the fixation of the intubation tube 101, which can reduce the complexity of the operation and avoid the displacement of the intubation tube 101 during the rotational adjustment process.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An ECMO cannula, characterized in that: include, A cannula (101), wherein a connecting sleeve (102) is provided on one side of the cannula (101), and a needle (103) is provided on one side of the connecting sleeve (102); The fixing assembly (200) is arranged on the cannula (101), and comprises a fixing sleeve (201) and a locking member (202), wherein the fixing sleeve (201) is located outside the cannula (101), and the locking member (202) comprises a rotating sleeve (202a), wherein the rotating sleeve (202a) is rotatably connected to the inside of the fixing sleeve (201), and a movable plate (202b) is arranged inside the rotating sleeve (202a), and one side of the movable plate (202b) is An extrusion plate (202c) is provided, a groove (202b-1) corresponding to the extrusion plate (202c) is provided on the movable plate (202b), a positioning column (202d) is fixed to one side of the extrusion plate (202c), one end of the positioning column (202d) penetrates to one side of the movable plate (202b) and is movably connected to the movable plate (202b), and a limiting spur (202e) is fixed to one side of the extrusion plate (202c); The fixing assembly (200) further comprises a rotating member (203), wherein the rotating member (203) comprises a rotating ring (203a), wherein the rotating ring (203a) is rotatably connected to one side of the rotating sleeve (202a), a guide shaft (203b) is fixed to one side of the movable plate (202b), a guide groove (203a-1) is formed on the rotating ring (203a), and the guide shaft (203b) slides in the guide groove (203a-1). The outer side of the rotating ring (203a) is rotatably connected to a rotating circle (203c), the rotating circle (203c) is provided with a through slot (203c-1), an insertion rod (203d) is arranged in the through slot (203c-1), the rotating ring (203a) is provided with an insertion hole (203a-2), the bottom end of the insertion rod (203d) is engaged with the insertion hole (203a-2), and a handle (203e) is fixed to the outer side of the rotating ring (203a); The fixing assembly (200) further comprises a pushing member (204), wherein the pushing member (204) comprises a push rod (204a), the push rod (204a) being located in the insertion hole (203a-2) and having its top end in contact with the insertion rod (203d), an extrusion rod (204b) being inserted into one side of the rotating ring (203a), the bottom end of the push rod (204a) being inclined, the end of the extrusion rod (204b) being in contact with the inclined surface of the bottom end of the push rod (204a), an arc plate (204c) being fixed at one end of the extrusion rod (204b), a force-bearing rod (204d) being clamped in the arc plate (204c), and an extrusion block (204e) being fixed at one end of the positioning column (202d).

2. The ECMO cannula according to claim 1, characterized in that: The fixing assembly (200) further comprises a connecting member (205), wherein the connecting member (205) comprises a limiting rod (205a), a movable groove (203a-3) is provided on the rotating ring (203a), the limiting rod (205a) is located in the movable groove (203a-3), the pushing rod (204a) is provided with an extrusion groove (204a-1), one end of the limiting rod (205a) is inclined and is located in the extrusion groove (204a-1), a limiting hole (202a-1) is provided on one side of the rotating sleeve (202a), the limiting rod (205a) corresponds to the limiting hole (202a-1), a connecting block (205b) is fixed to the top of the limiting rod (205a), and a first spring (205c) is fixed to one side of the connecting block (205b).

3. The ECMO cannula according to claim 2, characterized in that: The fixing assembly (200) further comprises a rotating member (206), wherein the rotating member (206) comprises a rotating rod (206a), a rotating groove (202a-2) is provided on the rotating sleeve (202a), a fixed shaft (206b) is fixed in the rotating groove (202a-2), the rotating rod (206a) is rotatably connected to the outside of the fixed shaft (206b), a torsion spring (206c) is fixed to the outside of the fixed shaft (206b), the other end of the torsion spring (206c) is fixed to the inside of the rotating rod (206a), and a force block (206d) is fixed to the top end of the positioning column (202d), and the force block (206d) is inclined.

4. The ECMO cannula according to claim 2 or 3, characterized in that: The fixing assembly (200) further comprises a limiting member (207), wherein the limiting member (207) comprises a movable rod (207a), wherein the movable rod (207a) is inserted into the handle (203e), wherein a chamber (207a-1) is provided on the movable rod (207a), wherein a limiting column (207b) is provided in the chamber (207a-1), wherein a second spring (207c) is fixed to one end of the limiting column (207b), wherein a positioning hole (203d-1) is provided on the insertion rod (203d), and wherein the limiting column (207b) corresponds to the positioning hole (203d-1).

5. The ECMO cannula according to claim 4, characterized in that: A third spring (202f) is fixed to one side of the extrusion plate (202c); the third spring (202f) is sleeved on the outside of the positioning column (202d), and the other end of the third spring is fixed to the movable plate (202b).

6. The ECMO cannula according to claim 5, characterized in that: A fourth spring (203f) is fixed to the top end of the insertion rod (203d), and the top end of the fourth spring (203f) is fixed to the inner wall of the through slot (203c-1).

7. The ECMO cannula according to claim 5 or 6, characterized in that: A support frame (203g) is fixed on one side of the rotating ring (203a), the extrusion rod (204b) is movably connected to the support frame (203g), a fifth spring (203h) is fixed on one side of the support frame (203g), and the other end of the fifth spring (203h) is fixed to the arc plate (204c).

8. The ECMO cannula according to claim 7, characterized in that: A support rod (203i) is fixed inside the rotating sleeve (202a), and the force-bearing rod (204d) is movably connected to the support rod (203i).

9. The ECMO cannula according to claim 8, characterized in that: There are a plurality of the limiting holes (202a-1), which are evenly distributed in an arc shape on one side of the rotating sleeve (202a).

10. The ECMO cannula according to claim 8 or 9, characterized in that: There are a plurality of the limiting protrusions (202e), which are evenly distributed on one side of the extrusion plate (202c) in a rectangular shape, and the limiting protrusions (202e) are inclined.

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