Anti-deformation anesthesia catheter

Abstract

The invention discloses an anti-deformation anesthesia catheter, which relates to the technical field of anesthesia catheters, and comprises a catheter body, a catheter joint and a monitoring system, a supporting structure is connected in the tail section of the catheter body around the circumferential surface of the inner wall; the conduit joint comprises a cannula joint and a delivery pipe joint; an elastic piece is arranged in the cannula connector, an abutting part is arranged in the delivery pipe connector, and the abutting part can abut against the elastic piece when the delivery pipe connector is connected to the cannula connector; the catheter body is inserted into the elastic piece and can partially extend into the delivery pipe connector. The monitoring system comprises a first torque sensor and an alarm device; the first torque sensor is connected into the guide pipe body, and the alarm device can receive torque data, monitored by the first torque sensor, of the guide pipe body so as to compare the torque data with a standard threshold value to judge whether the guide pipe body is locked at the locking position or not. And the phenomenon that the catheter body does not reach the locking position due to insufficient force or crosses the locking position due to excessive force to cause extrusion deformation or blockage is prevented.

Description

Technical Field

[0001] The present application belongs to the technical field of anesthesia catheters, and in particular relates to an anti-deformation anesthesia catheter. Background Art

[0002] The anesthesia catheter is connected to the patient's blood vessels or respiratory tract to accurately deliver anesthetic drugs to the patient's body, ensuring that the patient can remain painless and relaxed during the operation, thereby ensuring the smooth progress of the operation. In clinical medicine, epidural nerve block is a widely used anesthesia method in clinical practice. It has the advantages of simple operation, low cost, easy management during surgery, and convenient epidural analgesia after surgery. The main component used in this anesthesia method is the anesthesia catheter. The outer diameter of this anesthesia catheter is usually no more than 1mm. In actual application, the anesthesia catheter needs to be inserted into and out of the needle cavity and the laparoscope cavity. Because the anesthesia catheter itself is too soft and has no sharp head, it is usually necessary for the epidural needle's needle cavity channel to enter the epidural cavity and the anesthesia catheter to be in place before the epidural needle can be withdrawn along the entire tube body. Therefore, it is not convenient to install the joint part and the tube body of the anesthesia catheter in advance. In other words, the tail section of the anesthesia catheter needs to be manually operated by medical staff to assemble with the catheter joint after the epidural needle is withdrawn.

[0003] However, in the prior art, both the anesthesia catheter and the catheter connector utilize elastic parts to wrap the anesthesia catheter. Specifically, the rotational force when the doctor manually connects the catheter connector applies an axial force to the extruded elastic part, thereby reducing the inner diameter of the cylindrical elastic part and wrapping the anesthesia catheter tightly. Alternatively, the doctor can directly apply radial pressure to the elastic part so that the elastic part wraps the anesthesia catheter tightly, thereby achieving assembly of the anesthesia catheter and the catheter connector. In actual applications, in order to facilitate the doctor to insert the anesthesia catheter into the inner cavity of the elastic part, the inner diameter of the inner cavity of the elastic part is correspondingly made larger. In this way, the doctor needs to rotate the anesthesia catheter several times before locking the anesthesia catheter in the inner cavity of the elastic part. During the rotation process, due to the different operating forces and rotation speeds of the doctor, the cylindrical elastic part itself will rotate with the anesthesia catheter and undergo varying degrees of twisting or even kinking. This will cause the elastic part to be very likely to be kinked or suddenly thinned in at least one section, causing the anesthesia catheter being inserted into the inner cavity of the elastic part to be clamped by the suddenly thinned and kinked elastic part, or even to kink together with it. In severe cases, at least one section of the anesthesia catheter will be clamped and blocked, causing the anesthesia catheter to be unable to be used normally. Moreover, due to the different forces and speeds of the doctor, the anesthesia catheter may not be locked in place or too much force may be used during the locking process to exceed the optimal locking position, causing the anesthesia catheter to be squeezed and deformed inside the catheter connector and cause blockage.

[0004] In the prior art, there are methods to reduce the probability of clogging of the catheter joint by adding a spiral steel wire or a limiting device throughout the whole section; or to increase the elasticity of the elastic member, and at the same time, the limiting device needs to be assembled with the catheter joint, resulting in a complex overall structure, a high probability of installation error, difficulties in actual operation and production maintenance, and increased production costs. Most importantly, it will also limit the size range of the applicable anesthesia catheter. The size of the anesthesia catheter is slightly larger or smaller, which is not conducive to locking. In order to prevent locking and clogging, medical staff choose to lock less, which is prone to leakage and gas leakage. Moreover, the above-mentioned improvement methods cannot detect the installation position of the anesthesia catheter in real time, and cannot timely determine whether the anesthesia catheter is locked in place, because when the doctor's operating force is too large or the number of rotations is too many, the anesthesia catheter will be squeezed and deformed. When the doctor's operating force is not enough or the number of rotations is not enough, the anesthesia catheter cannot be installed in place. Therefore, it is impossible to timely judge the installation status of the anesthesia catheter and warn the installation status of the anesthesia catheter according to the different strengths and speeds of the doctor, so as to timely obtain whether the anesthesia catheter is deformed, squeezed, etc. Summary of the invention

[0005] The present application provides an anti-deformation anesthesia catheter to solve the above-mentioned technical problem that the anesthesia catheter inserted into the inner cavity of the elastic part is clamped or even kinked by the elastic part that suddenly becomes thinner and kinked. In severe cases, at least a section of the anesthesia catheter may be clamped and blocked, resulting in the inability to use the anesthesia catheter normally; and due to the different strength and speed of the doctor, it may further cause the anesthesia catheter to be locked in place or excessive force is used during the locking process to exceed the optimal locking position, causing the anesthesia catheter to be squeezed and deformed inside the catheter connector and cause blockage; it is impossible to detect the installation position of the anesthesia catheter in real time to determine whether the anesthesia catheter is locked in place, and it is even more impossible to timely determine and warn the installation status of the anesthesia catheter according to the different strength and speed of the doctor, whether it is deformed, squeezed, etc.

[0006] The technical solution adopted in this application is:

[0007] An anti-deformation anesthesia catheter comprises a catheter body, a catheter connector and a monitoring system;

[0008] A support structure is connected around the inner wall of the tail section of the catheter body;

[0009] The catheter joint comprises a cannula joint and a pipe joint; the cannula joint has an elastic member inside, and the pipe joint has an abutment portion inside, and the abutment portion can abut and connect to the elastic member when the pipe joint is connected to the cannula joint; the catheter body is inserted into the elastic member and can partially extend into the pipe joint;

[0010] The monitoring system includes a first torque sensor and an alarm device; the first torque sensor is connected to the catheter body, and the alarm device can receive the torque data of the catheter body monitored by the first torque sensor to compare with the standard threshold to determine whether the catheter body is locked in the locking position.

[0011] The anti-deformation anesthesia catheter of the present application also has the following additional technical features:

[0012] The tail section of the catheter body also has a connecting portion, and a positioning portion matched with the connecting portion is provided in the catheter joint. The catheter body is locked to a locking position in the catheter joint through the docking of the connecting portion and the positioning portion.

[0013] The connecting portion includes a protrusion; a protrusion is arranged in the circumferential direction of the outer side of the tail section of the catheter body; a guide groove forming the positioning portion is opened inside the catheter joint corresponding to the position of the protrusion; the protrusion is slidably connected to the guide groove and abuts against the end of the guide groove so that the catheter body is locked and connected to the catheter joint.

[0014] The positioning portion includes a guide slot; the guide slot includes a first slot and a second slot, the first slot extends along the axial direction of the catheter joint, and the second slot is connected to the first slot and extends along the circumferential direction of the catheter joint; the protrusion moves along the first slot into the second slot to limit the catheter body along the axial direction.

[0015] The connecting portion includes a connecting ring; a connecting ring is connected to the inner side of the tail section of the catheter body along the inner wall circumference, the connecting ring is a circular ring structure, the interior of the connecting ring is connected to the inner cavity of the catheter body, and the radial end surface of the connecting ring forms an abutment surface that can abut the positioning portion connected to the catheter connector.

[0016] The positioning portion includes a positioning column; the positioning column is protruded along the extension direction of the catheter body and is connected to the bottom wall of the catheter connector; the connecting end of the positioning column is connected to the catheter connector, and the abutting end of the positioning column can extend into the tail section of the catheter body and abut against the abutting surface of the connecting ring, and the positioning column has a cavity that penetrates along the axial direction, and the cavity is connected to the inner cavity of the catheter body to form a drug guiding channel.

[0017] A first through hole is opened in the elastic member along the axial direction, the catheter body is inserted into the first through hole and extends along the first through hole into the pipe connector, and the first through hole can be connected with the first cavity of the insertion pipe connector and the second cavity of the pipe connector to form a circulation channel for the circulation of liquid medicine.

[0018] An anti-deformation anesthesia catheter also includes a second torque sensor; the first torque sensor is connected to the pipe connector, and the second torque sensor is connected to the elastic member; the first torque sensor is used to detect the torque data of the catheter body, and the second torque sensor is used to detect the torque data of the elastic member to determine whether the elastic member forms an extrusion state on the catheter body, and promptly issues an alarm to the user through the alarm device.

[0019] An anti-deformation anesthesia catheter also includes a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is connected to the inside of a cannula joint, and the second pressure sensor is connected to the inside of a supporting structure; the first pressure sensor and the second pressure sensor can detect the pressure values ​​applied to the cannula joint and the pressure values ​​applied to the catheter body when the cannula joint and the pipe joint are in an assembled state, so as to determine whether the catheter body is locked in place, and if not locked in place, the user is warned through the alarm device.

[0020] The supporting structure adopts a wire ring, and the wire ring is spirally wound and connected to the inner circumference of the tail section of the catheter body.

[0021] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0022] 1. The present application relates to an anti-deformation anesthesia catheter, comprising a catheter body, a catheter connector and a monitoring system; a support structure is connected around the inner wall of the tail section of the catheter body; the catheter connector comprises a cannula connector and a pipe connector; the cannula connector has an elastic member inside, and the pipe connector has an abutment portion inside, and the abutment portion can be abutted and connected to the elastic member when the pipe connector is connected to the cannula connector; the catheter body is inserted into the elastic member and can partially extend into the pipe connector; the monitoring system comprises a first torque sensor and an alarm device; the first torque sensor is connected to the catheter body, and the alarm device can receive the torque data of the catheter body monitored by the first torque sensor to compare with the standard threshold value to determine whether the catheter body is locked in the locked position.

[0023] When the catheter body is screwed into the insertion connector and the tube connector, due to the different operating forces and rotation speeds of different medical staff, the torsional torque, compression force, etc. generated on the catheter body are different, which makes the time for the catheter body to reach the locking position in the catheter connector different, the deformation between the catheter body and the catheter connector is different, and the locking state between the catheter body and the catheter connector is different. Therefore, if the catheter body has not been inserted into the accurate locking position or has passed the accurate locking position, it is impossible to provide feedback to the operator in time and determine the position of the catheter body to further ensure that the catheter body is installed in the locking position. Therefore, the present application also needs to design a monitoring system, the monitoring system includes a first torque sensor and an alarm device; the first torque sensor is connected to the catheter body, and the alarm device can receive the torque data of the catheter body monitored by the first torque sensor to compare with the standard threshold to determine whether the catheter body is locked in the locking position. When the catheter connector and the catheter body are in close cooperation, as the pressure or torque gradually increases, the first torque sensor can detect relevant data in real time and send it to the controller. The controller controls the alarm device to sound an alarm to prompt the operator to stop the operation or to continue locking, so that the catheter body reaches the locking position, thereby preventing the catheter body from failing to reach the locking position due to insufficient force or exceeding the locking position due to excessive force, resulting in squeezing, deformation or blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is a schematic structural diagram of an anti-deformation anesthesia catheter according to an implementation mode of the present application;

[0026] Figure 2 This is a schematic structural diagram of an anti-deformation anesthesia catheter having a connecting portion of embodiment 1 of the present application;

[0027] Figure 3 This is a schematic structural diagram of an anti-deformation anesthesia catheter having a connecting portion of the second embodiment of the present application;

[0028] In the figure,

[0029] 1. Catheter body; 2. Support structure; 3. Catheter joint; 31. Insertion joint; 32. Pipeline joint; 4. First torque sensor; 5. Second torque sensor; 6. Alarm device; 7. First pressure sensor; 8. Second pressure sensor; 9. Bump; 10. Connecting ring; 11. Positioning column; 12. Elastic member. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0032] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0035] The present application relates to an anti-deformation anesthesia catheter, such as Figure 1-3As shown, it includes a catheter body 1, a catheter connector 3 and a monitoring system; a support structure 2 is connected around the inner wall of the tail section of the catheter body 1, and the catheter connector 3 includes a tube connector 31 and a pipe connector 32; the tube connector 31 has an elastic member 12 inside, and the pipe connector 32 has an abutment portion inside, and the abutment portion can be abutted and connected to the elastic member 12 when the pipe connector 32 is connected to the catheter connector 31; the catheter body 1 is inserted into the elastic member 12 and can partially extend into the pipe connector 32; the monitoring system includes a first torque sensor 4 and an alarm device 6; the first torque sensor 4 is connected to the catheter body 1, and the alarm device 6 can receive the torque data of the catheter body 1 monitored by the first torque sensor 4 to compare with the standard threshold value to determine whether the catheter body 1 is locked in the locking position.

[0036] The catheter body 1 is the tube body part of the anesthesia catheter, and the catheter connector 3 is the connector part of the anesthesia catheter. Since the diameter of the catheter body 1 is small, and some of the outer diameters are even less than 1 mm, the catheter body 1 needs to enter the epidural space through the needle cavity channel of the epidural needle with the assistance of the epidural needle. After the catheter body 1 is in place, the epidural needle is withdrawn, and at this time, the medical staff holds the catheter connector 3 and assembles it with the catheter body 1.

[0037] The catheter connector 3 includes a cannula connector 31 and a pipe connector 32; the pipe connector 32 is detachably connected to the cannula connector 31, the pipe connector 32 is used to connect to the infusion set, and the cannula connector 31 is used to connect to the catheter body 1; the cannula connector 31 has an elastic member 12 inside, and the pipe connector 32 has an abutment portion inside, and the abutment portion can be abutted and connected to the elastic member 12 when the pipe connector 32 is connected to the cannula connector 31; a first through hole is opened in the elastic member 12 along the axial direction, the catheter body 1 is inserted into the first through hole and extends along the first through hole to the pipe connector 32, and the first through hole can be connected to the first cavity of the cannula connector 31 and the second cavity of the pipe connector 32 to form a circulation channel for the circulation of liquid medicine.

[0038] like Figure 1As shown, the left side of the figure is a pipe joint 31, and a trumpet-shaped cavity is opened at the left end of the pipe joint 31, and a square-shaped cavity is provided on the right side of the pipe joint 31. The trumpet-shaped cavity and the square-shaped cavity are connected to form a first cavity inside the pipe joint 31; the right side of the figure is a pipe joint 32, and the left side of the pipe joint 32 has a coaxial structure, and the right side has a cylindrical structure, so that the outside of the pipe joint 32 is a T-shaped structure; the inner side of the left concentric axis structure of the pipe joint 32 serves as an abutment portion, and there is a gap between the outer side and the inner side in the radial direction, so that the left concentric axis of the pipe joint 32 The structure has an annular cavity, and the outer inner wall has an internal thread, which matches the external thread on the outer side of the right end of the cannula connector 31; when the pipe connector 32 is connected to the right end of the cannula connector 31, the abutment portion on the inner side of the pipe connector 32 can be abutted and connected to the right end of the elastic member 12, and the outer side of the pipe connector 32 can be threadedly connected to the outer side of the right end of the cannula connector 31; the right side of the pipe connector 32 has a conical cavity inside, and the purpose of the conical structure is that when the infusion set is connected, when the infusion set is inserted into the conical cavity along the axial direction, it can be abutted and connected by the gradually shrinking radial wall surface, so as to realize the positioning and installation of the infusion set;

[0039] Specifically, during the actual installation process, it is necessary to pre-install the catheter connector 3 and the insert pipe connector 31, that is, the internal thread of the pipe connector 32 is screwed together with the external thread of the insert pipe connector 31 for several turns but not completely locked, and then the tail section of the catheter body 1, that is, one end of the catheter body 1 with the support structure 2, enters the first through hole of the elastic member 12 from the trumpet-shaped cavity of the insert pipe connector 31, and the tail section of the catheter body 1 is extended from the first through hole to the flow channel of the pipe connector 32, and then the pipe connector 32 and the insert pipe connector 31 are screwed and tightened, so that the abutting portion of the pipe connector 32 can abut and connect to the right end of the elastic member 12, and the elastic member 12 is locked between the insert pipe connector 31 and the pipe connector 32, and the assembly between the catheter body 1 and the catheter connector 3 is completed. The tail section of the catheter body 1 can be partially located in the flow channel of the pipe connector 32, so that when the pipe connector 32 is screwed onto the outside of the inserting connector 31, the tail section of the catheter body 1 will not be blocked due to the rotational deformation of the elastic member 12, thereby avoiding the problem of clogging of the catheter body 1.

[0040] When the catheter body 1 is screwed and connected to the insertion tube connector 31 and the tube connector 32, due to the different operating forces and rotation speeds of different medical staff, the torsional torque, compression force, etc. generated on the catheter body 1 are different, so that the time for the catheter body 1 to reach the locking position when it is installed in the catheter connector 3 and the deformation between the catheter body 1 and the catheter connector 3 are different, that is, the locking state between the catheter body 1 and the catheter connector 3 is different. Therefore, if the catheter body 1 has not been inserted into the accurate locking position or has passed the accurate locking position, it is impossible to provide feedback to the operator in time and determine the position of the catheter body 1 to further ensure that the catheter body 1 is installed in the locking position. Therefore, the present application also needs to design a monitoring system, the monitoring system includes a first torque sensor 4 and an alarm device 6; the first torque sensor 4 is connected to the catheter body 1, and the alarm device 6 can receive the torque data of the catheter body 1 monitored by the first torque sensor 4 to compare with the standard threshold to determine whether the catheter body 1 is locked in the locking position. When the catheter connector 3 and the catheter body 1 are in close cooperation, as the pressure or torque gradually increases, the first torque sensor 4 can detect relevant data in real time and send it to the controller, and the controller controls the alarm device 6 to sound an alarm to prompt the operator to stop the operation or to continue to lock, so that the catheter body 1 reaches the locking position, thereby preventing the catheter body 1 from failing to reach the locking position due to insufficient force or exceeding the locking position due to excessive force, resulting in squeezing, deformation or blockage.

[0041] The tail section of the catheter body 1 may have a connecting portion or may not have a connecting portion. When the tail section of the catheter body 1 has a connecting portion, the catheter connector 3 has a positioning portion that matches the connecting portion, and the catheter body 1 is locked to the locking position in the catheter connector 3 by docking the connecting portion with the positioning portion.

[0042] The connection part and the positioning part matched with the connection part have various structures, which are not limited to the contents listed in this application. Specifically, any of the following implementations can be adopted:

[0043] Embodiment 1: The connecting portion includes a protrusion 9; a protrusion 9 is arranged in the circumferential direction of the outer side of the tail section of the catheter body 1; a guide groove forming a positioning portion is opened inside the catheter joint 3 corresponding to the position of the protrusion 9; the protrusion 9 is slidably connected to the guide groove and abuts against the end of the guide groove, so that the catheter body 1 is locked and connected to the catheter joint 3.

[0044] like Figure 2As shown, the connecting portion includes a connecting conduit and a protrusion 9, the connecting conduit is connected to the tail section of the conduit body 1 and is an integrated structure with the conduit body 1, and the radial dimension of the connecting conduit is smaller than the radial dimension of the conduit body 1; or, the tail section of the conduit body 1 can be designed to have a stepped shaft-like structure, so that one end of the supporting structure 2 of the tail section of the conduit body 1 can abut against the step surface of the stepped shaft of the tail section of the conduit body 1, thereby further limiting the supporting structure 2 and preventing the supporting structure 2 from escaping from the interior of the conduit body 1; preferably, the conduit body 1 is designed to have a stepped shaft-like structure. It is a stepped structure. The protrusion 9 is connected to the outer periphery of the end portion with a smaller radial dimension of the tail section of the catheter body 1, and can extend a certain distance along the circumferential direction of the outer periphery. The protrusion 9 protrudes from the outer wall of the catheter body 1, and can be used as a connecting portion to cooperate with the positioning portion inside the pipe connector 32 after the catheter body 1 is inserted into the first through hole of the elastic member 12. Through the locking connection between the connecting portion and the positioning portion, the catheter body 1 is limited inside the pipe connector 32, thereby achieving the catheter body 1 being locked inside the pipe connector 32, and the catheter body 1 reaches the locked position.

[0045] With respect to the structure of the connecting portion in the first embodiment, the corresponding structure of the positioning portion is as follows:

[0046] The positioning portion includes a guide groove; the guide groove includes a first groove and a second groove, the first groove extends along the axial direction of the catheter joint 3, and the second groove is connected to the first groove and extends along the circumferential direction of the catheter joint 3; the protrusion 9 moves along the first groove to the second groove to limit the catheter body 1 along the axial direction.

[0047] In this embodiment, the positioning portion is connected with the above-mentioned connecting portion, the first slide groove is opened along the inner cavity of the abutting portion of the pipe joint 32, and extends along the axial direction of the pipe joint 32, the second slide groove is connected to the first slide groove to form an L-shaped structure, the second slide groove is opened along the inner cavity of the abutting portion of the pipe joint 32, and extends along the circumferential direction of the pipe joint 32; when the protrusion 9 enters the inner cavity of the pipe joint 32, the catheter body 1 is rotated, and the intubation joint 31 and the pipe joint 32 of the catheter joint 3 are made of transparent materials, so the catheter body 1 can be rotated to see the protrusion 9 rotate to the pipe joint 32, and then continue to insert the catheter body 1 into the inside of the pipe connector 32, so that the protrusion 9 of the catheter body 1 can move along the first slide groove, and then rotate the catheter body 1 to make the protrusion 9 move from the first slide groove along the second slide groove, so that the protrusion 9 changes from moving along the axial direction of the pipe connector 32 to moving along the circumferential direction of the pipe connector 32. When the protrusion 9 moves to the end of the second slide groove under the rotation of the catheter body 1, the protrusion 9 limits the catheter body 1 along the axial direction through the second slide groove, so that the catheter body 1 is locked and connected with the pipe connector 32.

[0048] Embodiment 2: The connecting portion includes a connecting ring 10; a connecting ring 10 is connected to the inner side of the tail section of the catheter body 1 along the inner wall circumference, the connecting ring 10 is a circular ring structure, the interior of the connecting ring 10 is connected to the inner cavity of the catheter body 1, and the radial end face of the connecting ring 10 forms an abutment surface that can abut against the positioning portion connected to the catheter connector 3.

[0049] like Figure 3 As shown, the connecting portion includes a connecting ring 10, which is connected to the tail section of the catheter body 1. The connecting ring 10 is an annular structure. The hollow cavity of the connecting ring 10 is connected to the inner cavity of the catheter body 1. One end of the connecting ring 10 along the axial direction can abut against the support structure 2, so that the support structure 2 is axially limited in the catheter body 1. The other end of the connecting ring 10 along the axial direction, that is, the radial end face of the connecting ring 10, as an abutment surface connected to the positioning portion, can abut and connect with the positioning portion of the pipe connector 32, thereby realizing the connection between the catheter body 1 and the pipe connector 32.

[0050] With respect to the structure of the connecting portion in the second embodiment, the corresponding structure of the positioning portion is as follows:

[0051] The positioning portion includes a positioning column 11; the positioning column 11 is protruded and connected to the bottom wall of the catheter connector 3 along the extension direction of the catheter body 1; the connecting end of the positioning column 11 is connected to the catheter connector 3, and the abutting end of the positioning column 11 can extend into the tail section of the catheter body 1 and abut and connect with the abutting surface of the connecting ring 10, and the positioning column 11 has a cavity that penetrates along the axial direction, and the cavity is connected to the inner cavity of the catheter body 1 to form a drug guiding channel.

[0052] The positioning part in the second embodiment is adapted to the structure in the second embodiment of the above-mentioned connecting part, and the positioning part includes a positioning column 11, which is a cylindrical structure or a conical structure, and the interior of the positioning column 11 is a hollow structure, so that the positioning column 11 can communicate with the second cavity of the pipe joint 32, and can communicate with the inner cavity of the connected catheter body 1; Figure 3 As shown, the positioning column 11 is connected to the inner side of the pipe connector 32, and protrudes along the axial direction to be connected to the inner side of the pipe connector 32. The right end of the positioning column 11 in the figure serves as a connecting end, and the left end of the positioning column 11 serves as an abutting end. The connecting end is used to connect to the inner side of the pipe connector 32, and the internal cavity of the positioning column 11 is communicated with the second cavity of the pipe connector 32. When the catheter body 1 is inserted into the second through hole of the pipe connector 32, it can be sleeved and connected to the outer side of the abutting end on the left side of the positioning column 11 until the abutting surface of the connecting ring 10 abuts and connects to the abutting end of the positioning column 11, so that the catheter body 1 can be locked and connected to the outer side of the positioning column 11, thereby realizing the connection between the catheter body 1 and the catheter connector 3.

[0053] As a preferred embodiment, an anti-deformation anesthesia catheter also includes a second torque sensor 5; the first torque sensor 4 is connected to the pipe connector 32, and the second torque sensor 5 is connected to the elastic member 12; the first torque sensor 4 is used to detect the torque data of the catheter body 1, and the second torque sensor 5 is used to detect the torque data of the elastic member 12 to determine whether the elastic member 12 forms an extrusion state on the catheter body 1, and promptly issues an alarm to the user through the alarm device 6.

[0054] The first torque sensor 4 in the present application is connected to the inside of the pipe connector 32 for detecting the torque data of the catheter body 1, and the second torque sensor 5 is connected to the elastic member 12 for detecting the torque data of the elastic member 12. By judging the torque of the catheter body 1 and the torque of the elastic member 12, it is obtained whether the elastic member 12 and the catheter body 1 are in a deformed state, and whether the catheter body 1 reaches a preset position. As the catheter body 1 enters the inside of the catheter connector 3, the torque exerted on the elastic member 12 and the catheter body 1 gradually increases. When the torque reaches the preset threshold, if the staff is still continuing to apply force to lock at this time, the sensor will upload the real-time detection data to the controller, and the alarm device 6 will be controlled by the controller to warn. The alarm device 6 is connected to the outside of the cannula body, and the alarm device 6 has a display screen. The function of the display screen is to give a prompt whether the anesthesia catheter is in a state of excessive locking force or inadequate locking, so as to remind relevant staff.

[0055] As a preferred embodiment, an anti-deformation anesthesia catheter also includes a first pressure sensor 7 and a second pressure sensor 8. The first pressure sensor 7 is connected to the inside of the cannula connector 31, and the second pressure sensor 8 is connected to the inside of the support structure 2. When the cannula connector 31 and the pipe connector 32 are in an assembled state, they are used to detect the pressure value of the cannula connector 31 and the pressure value of the catheter body 1 to determine whether the catheter body 1 is locked in place. If it is not locked in place, the user is warned through the alarm device 6.

[0056] The first pressure sensor 7 is connected to the inside of the insertion joint 31, and can detect the pressure exerted on the insertion joint 31 by the staff in real time, and judge the pressure exerted on the catheter body 1 by the pressure. When the pressure is too large and greater than the set threshold, the alarm device 6 is used to warn or the display screen in the alarm device 6 prompts the staff; the second pressure sensor 8 is connected to the inside of the supporting structure 2, and judges whether the catheter body 1 is deformed and squeezed by the pressure exerted on the catheter body 1. When the pressure is too large and greater than the set threshold, it is easy to cause deformation of the catheter body 1, and then a warning is issued through the alarm device 6, and the staff is prompted through the display screen of the alarm device 6.

[0057] As a preferred embodiment, the support structure 2 is a wire ring, which is spirally wound and connected to the inner circumference of the tail section of the catheter body 1 .

[0058] In the present application, the support structure 2 adopts a wire ring, and the wire ring is spirally connected to the inner wall circumference of the tail section of the catheter body 1, so that the wire ring can support the tail section of the catheter body 1, improve the rigidity of the tail section of the catheter body 1, and thus facilitate the rotation of the catheter body 1 into the catheter connector 3.

[0059] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0060] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0061] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A deformation-resistant anesthesia catheter, characterized in that: It includes a catheter body, a catheter connector and a monitoring system; A support structure is connected around the inner wall of the tail section of the catheter body; The catheter joint comprises a cannula joint and a pipe joint; the cannula joint has an elastic member inside, and the pipe joint has an abutment portion inside, and the abutment portion can abut and connect to the elastic member when the pipe joint is connected to the cannula joint; the catheter body is inserted into the elastic member and can partially extend into the pipe joint; The monitoring system includes a first torque sensor and an alarm device; the first torque sensor is connected to the catheter body, and the alarm device can receive the torque data of the catheter body monitored by the first torque sensor to compare with the standard threshold to determine whether the catheter body is locked in the locking position.

2. The anti-deformation anesthesia catheter according to claim 1, characterized in that: The tail section of the catheter body also has a connecting portion, and the catheter connector has a positioning portion adapted to the connecting portion, and the catheter body is locked to a locking position in the catheter connector through docking between the connecting portion and the positioning portion.

3. The anti-deformation anesthesia catheter according to claim 2, characterized in that: The connecting portion includes a protrusion; a protrusion is arranged in the circumferential direction of the outer side of the tail section of the catheter body; a guide groove forming the positioning portion is opened inside the catheter joint corresponding to the position of the protrusion; the protrusion is slidably connected to the guide groove and abuts against the end of the guide groove so that the catheter body is locked and connected to the catheter joint.

4. The anti-deformation anesthesia catheter according to claim 3, characterized in that: The positioning portion includes the guide slot; the guide slot includes a first slot and a second slot, the first slot extends along the axial direction of the catheter joint, the second slot is connected to the first slot and extends along the circumferential direction of the catheter joint; the protrusion moves along the first slot into the second slot to limit the catheter body along the axial direction.

5. The anti-deformation anesthesia catheter according to claim 2, characterized in that: The connecting portion includes a connecting ring; a connecting ring is connected to the inner side of the tail section of the catheter body along the inner wall circumference, and the connecting ring is a circular ring structure; the interior of the connecting ring is connected to the inner cavity of the catheter body, and the radial end surface of the connecting ring forms an abutment surface that can abut against the positioning portion connected to the catheter connector.

6. The anti-deformation anesthesia catheter according to claim 5, characterized in that: The positioning portion includes a positioning column; the positioning column is protruded along the extension direction of the catheter body and is connected to the bottom wall of the catheter connector; the connecting end of the positioning column is connected to the catheter connector, and the abutting end of the positioning column can extend into the tail section of the catheter body and abut against the abutting surface of the connecting ring, and the positioning column has a cavity that penetrates along the axial direction, and the cavity is connected to the inner cavity of the catheter body to form a drug guiding channel.

7. The anti-deformation anesthesia catheter according to claim 1, characterized in that: A first through hole is opened in the elastic member along the axial direction, the catheter body is inserted into the first through hole and extends along the first through hole into the pipe connector, and the first through hole can be connected with the first cavity of the pipe connector and the second cavity of the pipe connector to form a circulation channel for the circulation of liquid medicine.

8. The anti-deformation anesthesia catheter according to claim 1, characterized in that: It also includes a second torque sensor; the first torque sensor is connected to the pipe joint, and the second torque sensor is connected to the elastic member; the first torque sensor is used to detect the torque data of the catheter body, and the second torque sensor is used to detect the torque data of the elastic member to determine whether the elastic member forms an extrusion state on the catheter body, and promptly issues an alarm to the user through the alarm device.

9. The anti-deformation anesthesia catheter according to claim 1, characterized in that: Also comprising a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is connected to the interior of the cannula connector, and the second pressure sensor is connected to the interior of the support structure; The first pressure sensor and the second pressure sensor can detect the pressure values ​​of the intubation joint and the pressure values ​​of the catheter body when the intubation joint and the pipe delivery joint are in an assembled state, so as to determine whether the catheter body is locked in place. If it is not locked in place, the user is warned through the alarm device.

10. The anti-deformation anesthesia catheter according to claim 1, characterized in that: The supporting structure adopts a wire ring, and the wire ring is spirally wound and connected to the inner circumference of the tail section of the catheter body.

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