Catheter fixing device

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a catheter fixing device which comprises a base and a clamping assembly. A mounting groove is formed in the base, and a rotating shaft and a limiting pin are arranged in the mounting groove; the clamping assembly is arranged in the mounting groove and comprises a first clamping part, a second clamping part and an elastic part, the first clamping part and the second clamping part are oppositely arranged and can rotate around the rotating shaft, and the opposite end faces of the first clamping part and the second clamping part are provided with a first groove, a second groove and a third groove correspondingly; the rotating shaft is arranged in a first hole defined by the first groove in a penetrating mode, the limiting pin is arranged in a second hole defined by the second groove in a penetrating mode, a third hole defined by the third groove is used for installing a guide pipe, and the spring is used for closing the first clamping component and the second clamping component so that the guide pipe can be fixed through the third groove. By the adoption of the catheter fixing device, the catheter can be fixed to the designated position and cannot deviate.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and more specifically, to a catheter fixing device. Background Art

[0002] Catheters are widely used in medical and other fields and can be used as tools for interventional diagnosis and treatment. During use, catheters often need to be fixed by a fixing device. Conventional fixing devices use a plastic base, which uses the elasticity of the plastic itself to clamp the catheter. However, after the plastic base is repeatedly plugged in and out of the catheter, the plastic structure is easily worn out and the reuse rate is low. There are also fixing devices that set clamps and cooperate with springs to form elastic buckles to fix the catheter, but the catheter is prone to lateral movement when disturbed, resulting in displacement deviation between the catheter axis and the ideal axis.

[0003] In summary, how to effectively solve the problem that conventional fixing devices are difficult to achieve reliable fixation of the catheter is a problem that currently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a catheter fixing device, the structural design of which can effectively solve the problem that conventional fixing devices are difficult to achieve reliable fixing of the catheter.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A catheter fixing device, comprising:

[0007] A base, wherein the base is provided with a mounting groove, and a rotating shaft and a limiting pin are provided in the mounting groove;

[0008] A clamping assembly is arranged in the mounting groove, and the clamping assembly includes a first clamping component, a second clamping component and an elastic member. The first clamping component and the second clamping component are arranged opposite to each other and can rotate around the rotating shaft respectively. The first clamping component and the second clamping component are respectively provided with a first groove, a second groove and a third groove on the opposite end surfaces. The second groove is located between the first groove and the third groove. The rotating shaft is passed through a first hole surrounded by the two first grooves, the limit pin is passed through a second hole surrounded by the two second grooves, and the third hole surrounded by the two third grooves is used to install a catheter. The elastic member is used to close the first clamping component and the second clamping component to fix the catheter through the third hole.

[0009] Optionally, in the above-mentioned catheter fixing device, the elastic member includes a torsion spring, and the torsion spring is coaxially arranged with the rotating shaft.

[0010] Optionally, in the above-mentioned catheter fixing device, the torsion spring is sleeved outside the rotating shaft;

[0011] Alternatively, the rotating shaft is a hollow shaft, and through holes are respectively provided on the wall surfaces at both ends of the rotating shaft, and the torsion spring is penetrated in the rotating shaft and the two ends thereof are respectively passed through the corresponding through holes.

[0012] Optionally, in the above-mentioned catheter fixing device, fourth grooves are respectively provided on the end surfaces opposite to each other of the first clamping component and the second clamping component, and the fourth groove is located at one end of the first groove close to the third groove, and the two end pins of the torsion spring are respectively provided in the fourth groove of the first clamping component and the fourth groove of the second clamping component.

[0013] Optionally, in the above-mentioned catheter fixing device, when the first clamping member and the second clamping member are in a closed state, there is a distance between one end of the first clamping member and the second clamping member close to the third groove to form an opening connected to the third hole.

[0014] Optionally, in the above-mentioned catheter fixing device, one end of the first clamping member and the second clamping member close to the third groove are both inclined surfaces, so that the opening is V-shaped.

[0015] Optionally, in the above-mentioned catheter fixing device, the top ends of the two opposite side walls of the mounting groove for mounting the rotating shaft are respectively provided with U-shaped grooves, and the width of the U-shaped groove is not less than the outer diameter of the catheter.

[0016] Optionally, in the above-mentioned catheter fixing device, a first base through hole for passing the rotating shaft and a second base through hole for passing the limiting pin are respectively provided below each of the U-shaped grooves.

[0017] Optionally, in the above-mentioned catheter fixing device, the base is symmetrical about a plane perpendicular to the rotation axis.

[0018] Optionally, in the above-mentioned catheter fixing device, the rotating shaft includes a main body and a head end connected to one end of the main body, the outer diameter of the head end is larger than the outer diameter of the main body and a step surface is formed between the two, the first base through hole on one side wall of the mounting groove cooperates with the main body, and the first base through hole on the other side wall is a step hole, and the step surface abuts against the end surface of the step hole.

[0019] Optionally, in the above-mentioned catheter fixing device, the base and the clamping assembly are both metal parts.

[0020] The catheter fixing device provided by the present application includes a base and a clamping assembly. The base is provided with a mounting groove, and a rotating shaft and a stop pin are provided in the mounting groove; the clamping assembly is provided in the mounting groove, and the clamping assembly includes a first clamping component, a second clamping component and an elastic member, the first clamping component and the second clamping component are arranged opposite to each other and can rotate around the rotating shaft, the first clamping component and the second clamping component are provided with a first groove, a second groove and a third groove on the opposite end surfaces, the second groove is located between the first groove and the third groove, the rotating shaft is passed through a first hole surrounded by the first groove of the first clamping component and the second clamping component, the stop pin is passed through a second hole surrounded by the second groove of the first clamping component and the second clamping component, the third hole surrounded by the third groove of the first clamping component and the second clamping component is used to install the catheter, and the elastic member is used to close the first clamping component and the second clamping component to fix the catheter through the third groove.

[0021] When the catheter fixing device provided by the present application is used, in the initial free state, the first clamping component and the second clamping component are closed under the action of the elastic member, and the first clamping component and the second clamping component can be rotated and opened by overcoming the elastic force of the elastic member through external force, so that the catheter can be placed in the third groove. When the external force is released, the first clamping component and the second clamping component are reset and closed under the action of the elastic member, thereby limiting the catheter to the third hole surrounded by the third groove. In addition, since the rotating shaft is passed through the first hole of the clamping assembly and the limit pin is passed through the second hole of the clamping assembly, the rotating shaft and the limit pin cooperate to limit the clamping assembly to a predetermined position in the installation groove and cannot move horizontally, and the corresponding catheter passed through the third hole can be fixed at a specified position without positional deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic cross-sectional structure diagram of a catheter fixing device according to a specific embodiment of the present application;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the middle base;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of the middle clamping assembly;

[0026] Figure 4 It is a schematic diagram of the cooperation between the clamping assembly, the rotating shaft and the limit pin;

[0027] Figure 5 for Figure 3 A schematic structural diagram of the first clamping component;

[0028] Figure 6 for Figure 3 A schematic structural diagram of the second clamping component;

[0029] Figure 7 for Figure 3 A schematic diagram of the structure of the elastic member;

[0030] Figure 8 is a cross-sectional schematic diagram of the position of the rotation axis of the catheter fixing device;

[0031] Fig. 9 is a cross-sectional schematic diagram of the position of the limit pin of the catheter fixing device;

[0032] Fig.10 This is a schematic structural diagram of a catheter fixing device according to another specific embodiment of the present application;

[0033] Fig.11 for Fig.10 AA cross-section diagram of ;

[0034] Fig.12 for Fig.11 A partial enlarged schematic diagram of .

[0035] The following are marked in the accompanying drawings:

[0036] Base 100, clamping assembly 200, catheter 300;

[0037] The mounting groove 101, the rotating shaft 110, the limiting pin 120, the U-shaped groove 102, the first base through hole 103, and the second base through hole 104;

[0038] A main body portion 111, a head end portion 112, and a step surface 113;

[0039] The first clamping member 210 , the second clamping member 220 , the elastic member 230 , the pin 231 , the first groove 201 , the second groove 202 , the third groove 203 , the first hole 204 , the second hole 205 , the third hole 206 , the fourth groove 207 , the opening 208 , and the inclined surface 209 . DETAILED DESCRIPTION

[0040] The embodiment of the present application discloses a catheter fixing device, so that the catheter is subjected to stable force after being fixed and the catheter position is not easily shifted.

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] In a specific embodiment, see Figure 1-Figure 6The catheter fixing device provided in the present application includes a base 100 and a clamping assembly 200. Among them, the base 100 is the main support structure of the catheter fixing device, and is provided with a mounting groove 101 for installing the clamping assembly 200. The shape of the base 100 can be set as needed, and is not specifically limited here. The shape of the mounting groove 101 can be set accordingly according to the shape of the clamping assembly 200, and space is reserved for the installation of the catheter 300. A rotating shaft 110 and a limit pin 120 are provided in the mounting groove 101, and the rotating shaft 110 and the limit pin 120 cooperate with the clamping assembly 200 to limit the clamping assembly 200 in the mounting groove 101. The rotating shaft 110 and the limit pin 120 can be either a solid shaft or a hollow shaft. The clamping assembly 200 is arranged in the mounting groove 101, and the clamping assembly 200 includes a first clamping part 210, a second clamping part 220 and an elastic member 230. The first clamping part 210 and the second clamping part 220 are arranged opposite to each other and can be respectively rotated around the rotation axis 110 to open or close. The first clamping part 210 and the second clamping part 220 are respectively provided with a first groove 201, a second groove 202 and a third groove 203 on the opposite end surfaces thereof, and the second groove 202 is located between the first groove 201 and the third groove 203. The rotation axis 110 is penetrated in a first hole 204 surrounded by the first groove 201 of the first clamping part 210 and the first groove 201 of the second clamping part 220, and the stop pin 120 is penetrated in a second hole 205 surrounded by the second groove 202 of the first clamping part 210 and the second groove 202 of the second clamping part 220. The cooperation between the rotating shaft 110 and the first hole 204 and the cooperation between the limiting pin 120 and the second hole 205 allows the clamping assembly 200 to be limited in the installation groove 101 and cannot be dislodged. At the same time, the lateral movement of the clamping assembly 200 in the installation groove 101 is limited, thereby realizing the reliable installation of the clamping assembly 200. The third hole 206 formed by the third groove 203 of the first clamping member 210 and the third groove 203 of the second clamping member 220 is used to install the catheter 300. The elastic member 230 is used to close the first clamping member 210 and the second clamping member 220, thereby enabling the catheter 300 to be fixed in the third hole 206. It can be understood that the closed state of the first clamping part 210 and the second clamping part 220 mentioned here and below (i.e., the natural state of the clamping assembly 200) refers to the first clamping part 210 and the second clamping part 220 having one end of the third groove 203 being rotated toward each other around the rotating shaft 110 under the action of the elastic member 230 to close, thereby being able to fix the catheter 300 in the third hole 206 without falling out.It should be noted that, when the first clamping member 210 and the second clamping member 220 are in a closed state, the first hole 204, the second hole 205 and the third hole 206 may be completely or partially closed, that is, the notches of the corresponding two first grooves 201, the two second grooves 202 and the two third grooves 203 may not fit together so that the hole formed is partially closed, or the notches of the corresponding two first grooves 201, the two second grooves 202 and the two third grooves 203 fit together to form a completely closed inner hole. The specific shapes of the first groove 201, the second groove 202 and the third groove 203 can be arranged in accordance with the corresponding shapes of the rotating shaft 110, the stop pin 120 and at least a part of the outer wall of the conduit 300, and are not specifically limited here.

[0043] When the catheter fixing device provided by the present application is applied, in the initial free state, the first clamping member 210 and the second clamping member 220 are closed under the action of the elastic member 230, and the first clamping member 210 and the second clamping member 220 can be rotated and opened by external force to overcome the elastic force of the elastic member 230, so that the catheter 300 can be placed in the third groove 203. When the external force is released, the first clamping member 210 and the second clamping member 220 are reset and closed under the action of the elastic member 230, so that the catheter 300 is limited to the third hole 206 surrounded by the third groove 203. In addition, since the rotating shaft 110 is inserted into the first hole 204 of the clamping assembly 200, and the limiting pin 120 is inserted into the second hole 205 of the clamping member, the rotating shaft 110 cooperates with the limiting pin 120 to limit the clamping assembly 200 to a predetermined position in the mounting groove 101 and cannot move horizontally, and the corresponding catheter 300 inserted into the third hole 206 can be fixed at a designated position without positional displacement.

[0044] In some embodiments, the rotation axis 110 is arranged in parallel with the stop pin 120, and the corresponding first groove 201 is arranged in parallel with the second groove 202. Thus, the stop pin 120 cooperates with the rotation axis 110 to effectively stop the clamping assembly 200 without interfering with the rotation of the first clamping member 210 and the second clamping member 220. In other embodiments, the stop pin 120 may also be arranged obliquely relative to the rotation axis 110, and the shape of the second groove 202 needs to be arranged accordingly according to the shape of the stop pin 120 and to avoid interfering with the rotation of the first clamping member 210 and the second clamping member 220.

[0045] In some embodiments, see Figure 7, the elastic member 230 includes a torsion spring, and the torsion spring is coaxially arranged with the rotating shaft 110. In the initial free state, the first clamping member 210 and the second clamping member 220 are closed under the torsion force of the torsion spring. When there is an external force that can overcome the torsion moment, the first clamping member 210 and the second clamping member 220 rotate to open. Through the limiting effect of the limit pin 120 and the rotating shaft 110, it is ensured that the clamping assembly 200 will not be offset to the left and right under the elastic force of the torsion spring. The torsion spring can provide a reliable elastic restoring force, and it is not easy to push the first clamping member 210 or the second clamping member 220 to rotate even if the catheter 300 is disturbed. And the torsion spring is coaxially arranged with the rotating shaft 110, which is convenient for assembly, and the overall clamping assembly 200 is more stable and reliable. In other embodiments, the elastic member 230 can also adopt elastic structures such as other forms of springs.

[0046] In some embodiments, the torsion spring is sleeved outside the rotating shaft 110. On the one hand, the rotating shaft 110 can support and limit the torsion spring, and during assembly, the rotating shaft 110 can be directly inserted into the hollow part of the torsion spring, which is convenient for assembly. Specifically, the inner circumference of the torsion spring contacts the rotating shaft 110, and the outer circumference abuts against the wall of the first groove 201 to ensure that the structure is stable and reliable.

[0047] In other embodiments, the rotating shaft 110 is a hollow shaft, and through holes are respectively provided on the wall surfaces at both ends of the rotating shaft 110. The torsion spring is inserted into the rotating shaft 110 and the two ends are respectively inserted through the corresponding through holes. Through holes are respectively provided at the positions corresponding to the two ends of the torsion spring on the rotating shaft 110 so that the ends of the torsion spring can be inserted through the through holes. The torsion spring is inserted into the rotating shaft 110, and the rotating shaft 110 can protect the torsion spring.

[0048] In some embodiments, fourth grooves 207 are respectively provided on the opposite end surfaces of the first clamping member 210 and the second clamping member 220, and the fourth grooves 207 are located at one end of the first groove 201 close to the third groove 203, and the two end pins 231 of the torsion spring are respectively provided in the fourth grooves 207 of the first clamping member 210 and the fourth grooves 207 of the second clamping member 220. By providing the fourth grooves 207, the ends of the torsion spring are provided in the fourth grooves 207. On the one hand, the ends of the torsion spring can be limited by the fourth grooves 207 and cannot move. On the other hand, the elastic force of the torsion spring can act on the first clamping member 210 and the second clamping member 220 through the fourth grooves 207, so that the overall structure is more stable and reliable. Moreover, the fourth grooves 207 are provided on the end surfaces of the first clamping member 210 and the second clamping member 220, which is also convenient for assembly with the torsion spring. The fourth grooves 207 can specifically extend along the axial direction of the torsion spring, so that the torsion spring can apply a clamping force to the first clamping member 210 and the second clamping member 220. The fourth groove 207 may be specifically U-shaped. In other embodiments, the fourth groove 207 may also be arranged to be inclined with respect to the axial direction of the torsion spring. In other embodiments, a plug hole may be arranged on the first clamping member 210 and the second clamping member 220, and the end of the torsion spring may be inserted into the plug hole; or the end of the torsion spring may be directly clamped on the end faces opposite to each other of the first clamping member 210 and the second clamping member 220, so as to provide an elastic force.

[0049] Specifically, the pins 231 at both ends of the torsion spring extend along the tangential direction of the torsion spring and extend axially after being bent. The portion extending along the tangential direction specifically fits the end surface of the first clamping member 210 or the second clamping member 220, and the portion extending along the axial direction of the torsion spring is arranged in the fourth groove 207. With such an arrangement, the portion extending along the tangential direction can play an axial limiting role on the torsion spring to prevent it from moving axially. The torsion spring can specifically be a single-row torsion spring, a double-row torsion spring, or a multi-row torsion spring.

[0050] In some embodiments, when the first clamping member 210 and the second clamping member 220 are in a closed state, there is a gap between the first clamping member 210 and the second clamping member 220 at one end close to the third groove 203 to form an opening 208 connected to the third hole 206. That is, when the first clamping member 210 and the second clamping member 220 are in a closed state, the third hole 206 is partially closed, and the opening 208 is provided to facilitate the placement of the catheter 300 into the third hole 206. During the operation, the opening 208 is also provided to facilitate the observation of the condition of the catheter 300.

[0051] Further, when the first clamping member 210 and the second clamping member 220 are in a closed state, the end faces of the first clamping member 210 and the second clamping member 220 located between the third groove 203 and the second groove 202 abut against each other. The abutting end faces can limit the angle of the first clamping member 210 and the second clamping member 220 in the closed state, that is, the first clamping member 210 and the second clamping member 220 can rotate toward each other under the action of the elastic member 230, and when they rotate until the end faces between the third groove 203 and the second groove 202 abut against each other, the rotation limit is reached, thereby locking the first clamping member 210 and the second clamping member 220 in the closed position. In other embodiments, the end face between the second groove 202 and the first groove 201 can also be used for limiting, or the end face close to the third groove 203 can be used for limiting.

[0052] In some embodiments, the ends of the first clamping member 210 and the second clamping member 220 close to the third groove 203 are both formed with an inclined surface 209, so that the opening 208 is V-shaped. By setting the inclined surface 209, when the catheter 300 is installed, the external force presses the catheter 300 in the direction of the third hole 206, and the pressure on the catheter 300 can be decomposed into a component force that pushes the first clamping member 210 and the second clamping member 220 to rotate and open under the action of the inclined surface 209, that is, the external force pressing the catheter 300 can push the first clamping member 210 and the second clamping member 220 to automatically rotate and open, and after the catheter 300 is pushed into the third hole 206, the first clamping member 210 and the second clamping member 220 can automatically reset and rotate and close under the action of the elastic member 230. In summary, the setting of the inclined surface 209 facilitates the installation of the catheter 300, and the structure is simple. In other embodiments, an operation window may be provided at the bottom of the mounting groove 101 , and external force acting on one end of the first clamping member 210 and the second clamping member 220 close to the first groove 201 may also open the first clamping member 210 and the second clamping member 220 .

[0053] In some embodiments, the top ends of the two opposite side walls of the mounting groove 101 for mounting the rotating shaft 110 are respectively provided with U-shaped grooves 102, and the width of the U-shaped grooves 102 is not less than the outer diameter of the catheter 300. By providing the U-shaped grooves 102, when the catheter 300 is fixed in the third hole 206 of the clamping assembly 200, the U-shaped grooves 102 can play an auxiliary positioning role for the catheter 300 to prevent it from shaking. In addition, when the catheter 300 is installed, the U-shaped grooves 102 can also play a guiding and positioning role.

[0054] In some embodiments, see Figure 8 and Fig. 9A first base through hole 103 for passing the rotating shaft 110 and a second base through hole 104 for passing the limiting pin 120 are respectively provided below each U-shaped groove 102 . That is, a first base through hole 103 is set on the base 100 corresponding to the rotating shaft 110, and a first base through hole 103 is set on the base 100 corresponding to the stop pin 120. When assembling, after placing the clamping assembly 200 at a suitable position in the mounting groove 101, the stop pin 120 is inserted through the second base through hole 104 on one side of the base 100, and then through the second hole 205 of the clamping assembly 200 to the second base through hole 104 on the other side of the base 100. Specifically, the stop pin 120 can be fixedly connected with the second base through hole 104 by interference fit, or the stop pin 120 can be fixedly connected with the second base through hole 104 by gap fit to facilitate assembly, and fixedly connected by gluing at the gap, or the stop pins can be respectively connected at both ends of the stop pin 120 to limit the axial displacement of the stop pin 120, so as to achieve its reliable installation. The installation method of the rotating shaft 110 can refer to the installation method of the stop pin 120 mentioned above, which will not be repeated here. In other implementations, the base 100 may also be provided with a first blind hole respectively matched with the two ends of the rotating shaft 110 and a second blind hole respectively matched with the two ends of the stop pin 120. During assembly, the rotating shaft 110 is pre-assembled in the first hole 204 of the clamping assembly 200, and the stop pin 120 is pre-assembled in the second hole 205 of the clamping assembly 200, and then the assembled clamping assembly 200, the rotating shaft 110, and the stop pin 120 are placed as a whole into the mounting groove 101 of the base 100 by utilizing the elasticity of the base 100, and the two ends of the rotating shaft 110 are inserted into the first blind hole, and the two ends of the stop pin 120 are inserted into the second blind hole, so that the clamping assembly 200 is limited in the mounting groove 101.

[0055] In some embodiments, see Figure 8 and Fig. 9 The base 100 is symmetrical about a plane perpendicular to the rotation axis 110. The symmetrical arrangement is simple in structure and convenient for processing and assembly. In other embodiments, the base 100 may also be arranged asymmetrically.

[0056] In some embodiments, see Figure 10-12The rotating shaft 110 includes a main body 111 and a head end 112 connected to one end of the main body 111. The outer diameter of the head end 112 is larger than the outer diameter of the main body 111 and a step surface 113 is formed between the two. The first base through hole 103 on one side wall of the mounting groove 101 is matched with the main body 111, and the first base through hole 103 on the other side wall is a step hole, and the step surface 113 is against the end surface of the step hole. That is, the rotating shaft 110 is a stepped shaft, and the main body 111 (the part with a small outer diameter of the stepped shaft) can be matched with a torsion spring, such as the torsion spring is sleeved outside the main body 111. In this embodiment, the base 100 adopts an asymmetric setting, the first base through hole 103 on one side is matched with the main body 111, and the first base through hole 103 on the other side is set as a step hole matched with the head end 112, and the above-mentioned step surface 113 is against the step hole to play an axial limiting role. During assembly, the rotating shaft 110 is inserted from one side of the step hole until the head end 112 is located in the step hole and the step surface 113 abuts against the end surface of the step hole, and the tail end of the rotating shaft 110 is inserted into the first base through hole 103 on the other side.

[0057] In some embodiments, the base 100 and the clamping assembly 200 are both metal parts. Metal parts are not easy to wear or even break, so that the catheter fixing device is suitable for long-term repeated use.

[0058] In some embodiments, the shapes of the first groove 201, the second groove 202 and the third groove 203 can be arc grooves, rectangular grooves, square grooves, such as arc grooves. The axes of the first groove 201, the second groove 202 and the third groove 203 can be coplanar or non-coplanar.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A catheter fixing device, characterized in that: include: A base (100), wherein the base (100) is provided with a mounting groove (101), and a rotating shaft (110) and a limiting pin (120) are provided in the mounting groove (101); A clamping assembly (200) is arranged in the installation groove (101), and the clamping assembly (200) comprises a first clamping component (210), a second clamping component (220) and an elastic member (230), the first clamping component (210) and the second clamping component (220) are arranged opposite to each other and can rotate around the rotation axis (110) respectively, and the first clamping component (210) and the second clamping component (220) are respectively provided with a first groove (201), a second groove (202) and a third groove (203) on the opposite end surfaces, and the second groove (202) is located at the Between the first groove (201) and the third groove (203), the rotating shaft (110) is inserted into a first hole (204) formed by the two first grooves (201), the limiting pin (120) is inserted into a second hole (205) formed by the two second grooves (202), the third hole (206) formed by the two third grooves (203) is used for installing a catheter (300), and the elastic member (230) is used to close the first clamping member (210) and the second clamping member (220) so as to fix the catheter (300) through the third hole (206).

2. The catheter fixing device according to claim 1, characterized in that: The elastic member (230) comprises a torsion spring, and the torsion spring is coaxially arranged with the rotating shaft (110).

3. The catheter fixing device according to claim 2, characterized in that: The torsion spring is sleeved outside the rotating shaft (110); Alternatively, the rotating shaft (110) is a hollow shaft, and through holes are respectively provided on the wall surfaces at both ends of the rotating shaft (110), and the torsion spring is inserted into the rotating shaft (110) and the two ends respectively pass through the corresponding through holes.

4. The catheter fixing device according to claim 2, characterized in that: A fourth groove (207) is respectively provided on the end surfaces opposite to each other of the first clamping component (210) and the second clamping component (220), and the fourth groove (207) is located at one end of the first groove (201) close to the third groove (203), and the two end pins (231) of the torsion spring are respectively provided in the fourth groove (207) of the first clamping component (210) and the fourth groove (207) of the second clamping component (220).

5. The catheter fixing device according to claim 1, characterized in that: When the first clamping part (210) and the second clamping part (220) are in a closed state, a distance is provided between one end of the first clamping part (210) and one end of the second clamping part (220) close to the third groove (203) to form an opening (208) communicating with the third hole (206).

6. The catheter fixing device according to claim 5, characterized in that: The ends of the first clamping member (210) and the second clamping member (220) close to the third groove (203) are both inclined surfaces (209), so that the opening (208) is V-shaped.

7. The catheter fixing device according to any one of claims 1 to 6, characterized in that: The top ends of the two opposite side walls of the mounting groove (101) for mounting the rotating shaft (110) are respectively provided with U-shaped grooves (102), and the width of the U-shaped groove (102) is not less than the outer diameter of the conduit (300).

8. The catheter fixing device according to claim 7, characterized in that: A first base through hole (103) for passing the rotating shaft (110) and a second base through hole (104) for passing the limiting pin (120) are respectively provided below each of the U-shaped grooves (102).

9. The catheter fixing device according to claim 8, characterized in that: The base (100) is symmetrical about a plane perpendicular to the rotation axis (110).

10. The catheter fixing device according to claim 8, characterized in that: The rotating shaft (110) comprises a main body (111) and a head end (112) connected to one end of the main body (111); the outer diameter of the head end (112) is greater than the outer diameter of the main body (111) and a step surface (113) is formed between the two; the first base through hole (103) on one side wall of the mounting groove (101) cooperates with the main body (111), and the first base through hole (103) on the other side wall is a step hole, and the step surface (113) abuts against the end surface of the step hole.

11. The catheter fixing device according to any one of claims 1 to 6, characterized in that: The base (100) and the clamping assembly (200) are both metal parts.

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