Secure guidewire locking device

Abstract

The present invention discloses a firmly installed guidewire locking device, comprising a housing, a first button, a second button, and an elastic member; an endoscope handle is provided with a connector, the outer periphery of the connector having a slot, the housing is provided with a wire locking cantilever for connecting to a guidewire to secure the guidewire, the housing is further provided with a connection channel for the connector to extend into, the first button is rotatably connected to the housing, the first button has a first latch located on one side of the connection channel, the second button is rotatably connected to the housing, the second button has a second latch located on the other side of the connection channel, the elastic member is installed in the housing and respectively abuts against the first button and the second button. The present invention can improve the firmness and stability of the connection to the endoscope handle, can avoid the problems of loosening and displacement, and thus can prevent the guidewire from shifting and deviating from the predetermined position.

Description

Technical Field

[0001] The invention relates to a firmly installed guide wire locking device. Background Art

[0002] Currently, during endoscopic surgery, a guidewire is typically inserted through the biopsy port on the endoscope handle to position the guidewire tip to a predetermined position. Other instruments are then quickly inserted into the predetermined position using the guidewire. When instruments need to be replaced, one instrument is removed along the guidewire and another is inserted along the guidewire. To prevent the guidewire from shifting during instrument removal and insertion, a guidewire locking device is typically installed on the endoscope handle to secure the guidewire, thereby preventing the guidewire tip from deviating from the predetermined position due to displacement. For example, Chinese Patent Publication No. CN219814988U discloses a guidewire locking device. However, this guidewire locking device is securely connected to the endoscope handle via a strap. This strap connection is not secure and can easily become loose. Consequently, the guidewire locking device is susceptible to shifting during use, which can cause the guidewire tip to shift, deviating from the predetermined position and hindering the performance of the surgery. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a firmly installed guide wire locking device, which can improve the firmness and stability of the connection to the endoscope handle, avoid the problems of loosening and displacement, and thus prevent the guide wire from shifting and deviating from the predetermined position.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a firmly installed guidewire locking device, comprising a housing, a first button, a second button and an elastic member;

[0005] The housing is provided with a wire locking cantilever for connecting with the guide wire to fix the guide wire, and the housing is also provided with a connecting channel for the connector in the endoscope handle to extend into;

[0006] The first button is rotatably connected to the housing, and the first button has a first latch located on one side of the connecting channel;

[0007] The second button is rotatably connected to the housing, and the second button has a second latch located on the other side of the connecting channel;

[0008] The elastic member is installed in the housing and respectively abuts against the first button and the second button. When the connector is extended into the connecting channel, the first button is used to rotate to a first locking position driven by the elastic member, thereby driving the first latch to be clamped into one end of the slot in the connector, and the second button is used to rotate to a second locking position driven by the elastic member, thereby driving the second latch to be clamped into the other end of the slot, thereby locking the connector in the connecting channel.

[0009] Furthermore, the first button has a first pressing portion, and the first pressing portion is used to be pressed to drive the first button to overcome the elastic force of the elastic member and rotate, thereby driving the first latch to exit the latch slot;

[0010] The second button has a second pressing portion, and the second pressing portion is used to be pressed to drive the second button to overcome the elastic force of the elastic member and rotate, thereby driving the second latch to exit the latch slot.

[0011] Furthermore, the end of the first latch tongue has a first arc-shaped latch joint for being latched into the latch slot, and the end of the second latch tongue has a second arc-shaped latch joint for being latched into the latch slot.

[0012] Furthermore, the first latch tongue is further provided with a first guide conical surface portion located below the first arc-shaped latch joint, and the second latch tongue is further provided with a second guide conical surface portion located below the second arc-shaped latch joint.

[0013] Furthermore, a locking block and a locking groove are provided on the wire locking cantilever, and a limiting groove is provided between the locking block and the wire locking cantilever.

[0014] Furthermore, the lower end portion of the shell is provided with an anti-rotation pin for abutting against the outer wall of the endoscope handle to prevent the shell from rotating relative to the endoscope handle.

[0015] Furthermore, the biopsy port in the endoscope handle is provided in the connector;

[0016] A biopsy valve is installed in the housing and is used to abut against the connector to seal the biopsy port;

[0017] The shell is also provided with a wire threading channel located above the biopsy valve.

[0018] Further providing a specific structure of the elastic member, the elastic member includes a main body, a first elastic arm and a second elastic arm;

[0019] The main body is provided with an inserting hole, and the inserting hole is sleeved on the lower end portion of the biopsy valve;

[0020] The first elastic arm is connected to one end of the main body, the first elastic arm abuts against the first button and is used to drive the first button to rotate toward the first locking position;

[0021] The second elastic arm is connected to the other end of the main body, and the second elastic arm abuts against the second button and is used to drive the second button to rotate toward the second locking position.

[0022] Furthermore, the lower end portion of the biopsy valve is provided with a step portion and a downwardly protruding insertion head;

[0023] The insertion hole is sleeved on the insertion head;

[0024] The upper end surface of the main body portion abuts against the step portion;

[0025] The shell is further provided with a lower abutting portion abutting against the lower end surface of the main body and an upper abutting portion abutting against the upper end surface of the biopsy valve.

[0026] Another specific structure of the elastic member is further provided, wherein the elastic member includes a left spring leaf and a right spring leaf, a left latch and a right latch are provided in the housing, a left slot is provided between the left latch and the inner wall of the housing, and a right slot is provided between the right latch and the inner wall of the housing;

[0027] The left spring sheet includes a left elastic arm, a left transition portion and a left abutting arm;

[0028] The left transition portion is inserted into the left slot, the left abutting arm is connected to one end of the left transition portion and abuts against the biopsy valve, and the left elastic arm is connected to the other end of the left transition portion and abuts against the first button and is used to drive the first button to rotate toward the first locking position;

[0029] The right spring sheet includes a right elastic arm, a right transition portion and a right abutting arm;

[0030] The right transition portion is inserted into the right slot, the right abutment arm is connected to one end of the right transition portion and abuts against the biopsy valve, and the right elastic arm is connected to the other end of the right transition portion and abuts against the second button and is used to drive the second button to rotate toward the second locking position.

[0031] After adopting the above technical solution, first press the first button and the second button to make the first button and the second button overcome the elastic force of the elastic member and rotate to the open state, then extend the connector into the connecting channel, and then release the first button and the second button. The first button is driven by the elastic member to rotate to the first locking position, thereby driving the first latch to be clamped into one end of the slot, and the second button is driven by the elastic member to rotate to the second locking position, thereby driving the second latch to be clamped into the other end of the slot, thereby locking the connector in the connecting channel, thereby making the shell stably and firmly connected to the connector. Then, insert the guide wire into the endoscope handle, and when the head of the guide wire reaches the predetermined position, wrap the tail of the guide wire around the locking wire cantilever, thereby fixing the guide wire and preventing it from shifting. Among them, by snapping the first latch and the second latch into the slot, the connector can be firmly and reliably locked in the connecting channel, so that the shell is stably and firmly connected to the connector, thereby greatly improving the firmness and stability of the connection to the endoscope handle, avoiding the problems of loosening and displacement, and preventing the guide wire from shifting and deviating from the predetermined position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of the firmly installed guidewire locking device and the endoscope handle of the present invention when they are disassembled;

[0033] Figure 2 This is a schematic structural diagram of the firmly installed guidewire locking device and the endoscope handle of the present invention when assembled;

[0034] Figure 3 This is a schematic structural diagram of a securely installed guidewire locking device according to the present invention;

[0035] Figure 4 An exploded view of the assembly of a securely mounted guidewire locking device according to the present invention;

[0036] Figure 5 This is a main cross-sectional view of a firmly installed guidewire locking device according to the first embodiment of the present invention;

[0037] Figure 6 A schematic diagram of the internal structure of a securely installed guidewire locking device of the present invention;

[0038] Figure 7 A right sectional view of a securely installed guidewire locking device according to the present invention;

[0039] Figure 8 is a structural schematic diagram of the second button of the present invention;

[0040] Figure 9This is a main cross-sectional view of a firmly installed guidewire locking device in embodiment 2 of the present invention. DETAILED DESCRIPTION

[0041] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0042] Example 1: Figures 1 to 8 As shown, a firmly installed guidewire locking device includes a housing 1, a first button 2, a second button 3 and an elastic member 4;

[0043] The endoscope handle 5 has a connector 6, and the outer periphery of the connector 6 has a radially inwardly recessed slot 7;

[0044] The housing 1 is provided with a wire locking cantilever 8 for connecting with the guide wire to fix the guide wire, and the housing 1 is also provided with a connecting channel 9 for the connector 6 to extend into;

[0045] The first button 2 is rotatably connected to the housing 1 , and the first button 2 has a first latch 10 located on one side of the connecting channel 9 ;

[0046] The second button 3 is rotatably connected to the housing 1 , and the second button 3 has a second latch 11 located on the other side of the connecting channel 9 ;

[0047] The elastic member 4 is installed in the housing 1 and respectively abuts against the first button 2 and the second button 3. When the connecting head 6 extends into the connecting channel 9, the first button 2 is used to rotate to the first locking position under the drive of the elastic member 4, thereby driving the first latch 10 to be snapped into one end of the slot 7, and the second button 3 is used to rotate to the second locking position under the drive of the elastic member 4, thereby driving the second latch 11 to be snapped into the other end of the slot 7, thereby locking the connecting head 6 in the connecting channel 9.

[0048] Specifically, first, the first button 2 and the second button 3 are pressed to rotate the first button 2 and the second button 3 to the open state against the elastic force of the elastic member 4, and then the connector 6 is inserted into the connecting channel 9. Then, the first button 2 and the second button 3 are released, and the first button 2 is driven by the elastic member 4 to rotate to the first locking position, thereby driving the first latch 10 to snap into one end of the slot 7, and the second button 3 is driven by the elastic member 4 to rotate to the second locking position, thereby driving the second latch 11 to snap into the other end of the slot 7, thereby locking the connector 6 in the connecting channel 9, thereby stably and firmly connecting the housing 1 to the connector 6. The guidewire is then inserted into the endoscope handle 5, and when the head of the guidewire reaches the predetermined position, the tail of the guidewire is wrapped around the wire locking cantilever 8, thereby fixing the guidewire and preventing it from shifting. Among them, by snapping the first latch 10 and the second latch 11 into the slot 7, the connector 6 can be firmly and reliably locked in the connecting channel 9, so that the shell 1 is stably and firmly connected to the connector 6, thereby greatly improving the firmness and stability of the connection to the endoscope handle 5, avoiding the problems of loosening and displacement, and thus avoiding the guide wire from shifting and deviating from the predetermined position.

[0049] like Figures 1 to 8 As shown, the first button 2 has a first pressing portion 12, and the first pressing portion 12 is used to be pressed to drive the first button 2 to overcome the elastic force of the elastic member 4 and rotate, thereby driving the first latch 10 to exit the latch slot 7;

[0050] The second button 3 has a second pressing portion 13, which is used to be pressed to drive the second button 3 to rotate against the elastic force of the elastic member 4 and thereby drive the second latch 11 to exit the latch slot 7. The housing 1 can then be removed.

[0051] like Figures 1 to 8 As shown, the end of the first latch 10 has a first arcuate latching portion 14 for latching into the latch slot 7, and the end of the second latch 11 has a second arcuate latching portion 15 for latching into the latch slot 7. Specifically, when the first arcuate latching portion 14 and the second arcuate latching portion 15 are latched into the latch slot 7, the connector 6 is confined within the connection channel 9, thereby locking the housing 1 to the connector 6. Specifically, the provision of the first arcuate latching portion 14 can increase the area within which the first latch 10 is latched into the latch slot 7, and the provision of the second arcuate latching portion 15 can increase the area within which the second latch 11 is latched into the latch slot 7, thereby improving the stability and firmness of confining the connector 6 within the connection channel 9.

[0052] like Figures 1 to 8 As shown, the first latch tongue 10 is further provided with a first guide conical portion 16 located below the first arc-shaped latch joint 14, and the second latch tongue 11 is further provided with a second guide conical portion 17 located below the second arc-shaped latch joint 15, thereby being able to guide the connector 6 to extend into the connecting channel 9.

[0053] like Figures 1 to 8 As shown, a locking block 18 and a locking groove 19 are provided on the wire locking cantilever 8, and a limiting groove is provided between the locking block 18 and the wire locking cantilever 8; specifically, the tail end of the guide wire passes through the limiting groove and is clamped in the locking groove 19, thereby fixing and locking the tail end of the guide wire, and the limiting groove can limit the guide wire.

[0054] like Figures 1 to 8 As shown, the lower end portion of the housing 1 is provided with an anti-rotation pin 20 for abutting against the outer wall of the endoscope handle 5 to prevent the housing 1 from rotating relative to the endoscope handle 5; in this embodiment, two anti-rotation pins 20 are provided.

[0055] like Figures 1 to 8 As shown, the biopsy port 21 in the endoscope handle 5 is provided in the connector 6;

[0056] The housing 1 is provided with a biopsy valve 22 for contacting with the connector 6 to seal the biopsy port 21;

[0057] The housing 1 is further provided with a wire threading channel 23 located above the biopsy valve 22. Specifically, the head of the guide wire passes through the wire threading channel 23 and then through the biopsy valve 22, extending into the biopsy port 21 and then into the endoscope handle 5. Finally, the head of the guide wire is extended to a predetermined position, and the tail of the guide wire is then wrapped around the wire locking cantilever 8. The specific structure of the biopsy valve 22 is well known to those skilled in the art and will not be described in detail in this embodiment.

[0058] In this embodiment, the elastic member 4 includes a main body 24 , a first elastic arm 25 and a second elastic arm 26 ;

[0059] The main body 24 is provided with an insertion hole 27 , and the insertion hole 27 is sleeved on the lower end of the biopsy valve 22 ;

[0060] The first elastic arm 25 is connected to one end of the main body 24 , and the first elastic arm 25 abuts against the first button 2 and is used to drive the first button 2 to rotate toward the first locking position;

[0061] The second elastic arm 26 is connected to the other end of the main body 24 . The second elastic arm 26 abuts against the second button 3 and is used to drive the second button 3 to rotate toward the second locking position.

[0062] In this embodiment, the lower end portion of the biopsy valve 22 is provided with a step portion 28 and a downwardly protruding insertion head 29;

[0063] The insertion hole 27 is sleeved on the insertion head 29;

[0064] The upper end surface of the main body portion 24 abuts against the step portion 28;

[0065] The housing 1 is further provided with a lower abutting portion 30 abutting against the lower end surface of the main body 24 and an upper abutting portion 31 abutting against the upper end surface of the biopsy valve 22 .

[0066] Example 2: Figures 1-3 , 7 to 9, another firmly installed guidewire locking device includes a housing 1, a first button 2, a second button 3 and an elastic member 4;

[0067] The endoscope handle 5 has a connector 6, and the outer periphery of the connector 6 has a radially inwardly recessed slot 7;

[0068] The housing 1 is provided with a wire locking cantilever 8 for connecting with the guide wire to fix the guide wire, and the housing 1 is also provided with a connecting channel 9 for the connector 6 to extend into;

[0069] The first button 2 is rotatably connected to the housing 1 , and the first button 2 has a first latch 10 located on one side of the connecting channel 9 ;

[0070] The second button 3 is rotatably connected to the housing 1 , and the second button 3 has a second latch 11 located on the other side of the connecting channel 9 ;

[0071] The elastic member 4 is installed in the housing 1 and respectively abuts against the first button 2 and the second button 3. When the connecting head 6 extends into the connecting channel 9, the first button 2 is used to rotate to the first locking position under the drive of the elastic member 4, thereby driving the first latch 10 to be snapped into one end of the slot 7, and the second button 3 is used to rotate to the second locking position under the drive of the elastic member 4, thereby driving the second latch 11 to be snapped into the other end of the slot 7, thereby locking the connecting head 6 in the connecting channel 9.

[0072] Specifically, first, the first button 2 and the second button 3 are pressed to rotate the first button 2 and the second button 3 to the open state against the elastic force of the elastic member 4, and then the connector 6 is inserted into the connecting channel 9. Then, the first button 2 and the second button 3 are released, and the first button 2 is driven by the elastic member 4 to rotate to the first locking position, thereby driving the first latch 10 to snap into one end of the slot 7, and the second button 3 is driven by the elastic member 4 to rotate to the second locking position, thereby driving the second latch 11 to snap into the other end of the slot 7, thereby locking the connector 6 in the connecting channel 9, thereby stably and firmly connecting the housing 1 to the connector 6. The guidewire is then inserted into the endoscope handle 5, and when the head of the guidewire reaches the predetermined position, the tail of the guidewire is wrapped around the wire locking cantilever 8, thereby fixing the guidewire and preventing it from shifting. Among them, by snapping the first latch 10 and the second latch 11 into the slot 7, the connector 6 can be firmly and reliably locked in the connecting channel 9, so that the shell 1 is stably and firmly connected to the connector 6, thereby greatly improving the firmness and stability of the connection to the endoscope handle 5, avoiding the problems of loosening and displacement, and thus avoiding the guide wire from shifting and deviating from the predetermined position.

[0073] In this embodiment, the first button 2 has a first pressing portion 12, which is used to be pressed to drive the first button 2 to overcome the elastic force of the elastic member 4 and rotate, thereby driving the first latch 10 to exit the latch slot 7;

[0074] The second button 3 has a second pressing portion 13, which is used to be pressed to drive the second button 3 to rotate against the elastic force of the elastic member 4 and thereby drive the second latch 11 to exit the latch slot 7. The housing 1 can then be removed.

[0075] In this embodiment, the end of the first latch 10 has a first arcuate latching portion 14 for latching into the latch slot 7, and the end of the second latch 11 has a second arcuate latching portion 15 for latching into the latch slot 7. Specifically, when the first arcuate latching portion 14 and the second arcuate latching portion 15 are latched into the latch slot 7, the connector 6 is confined within the connection channel 9, thereby locking the housing 1 to the connector 6. Specifically, the provision of the first arcuate latching portion 14 can increase the area within which the first latch 10 is latched into the latch slot 7, and the provision of the second arcuate latching portion 15 can increase the area within which the second latch 11 is latched into the latch slot 7, thereby improving the stability and firmness of confining the connector 6 within the connection channel 9.

[0076] In this embodiment, the first latch tongue 10 is further provided with a first guide conical portion 16 located below the first arc-shaped latch joint 14, and the second latch tongue 11 is further provided with a second guide conical portion 17 located below the second arc-shaped latch joint 15, thereby guiding the connector 6 to extend into the connecting channel 9.

[0077] In this embodiment, a locking block 18 and a locking groove 19 are provided on the wire locking cantilever 8, and a limiting groove is provided between the locking block 18 and the wire locking cantilever 8; specifically, the tail end of the guide wire passes through the limiting groove and is clamped in the locking groove 19, thereby fixing and locking the tail end of the guide wire, and the limiting groove can limit the guide wire.

[0078] In this embodiment, the lower end of the housing 1 is provided with an anti-rotation pin 20 for abutting against the outer wall of the endoscope handle 5 to prevent the housing 1 from rotating relative to the endoscope handle 5; in this embodiment, two anti-rotation pins 20 are provided.

[0079] In this embodiment, the biopsy port 21 in the endoscope handle 5 is provided in the connector 6;

[0080] The housing 1 is provided with a biopsy valve 22 for contacting with the connector 6 to seal the biopsy port 21;

[0081] The housing 1 is further provided with a wire threading channel 23 located above the biopsy valve 22. Specifically, the head of the guide wire passes through the wire threading channel 23 and then through the biopsy valve 22, extending into the biopsy port 21 and then into the endoscope handle 5. Finally, the head of the guide wire is extended to a predetermined position, and the tail of the guide wire is then wrapped around the wire locking cantilever 8. The specific structure of the biopsy valve 22 is well known to those skilled in the art and will not be described in detail in this embodiment.

[0082] In this embodiment, the elastic member 4 includes a left spring leaf 32 and a right spring leaf 33. A left latch 34 and a right latch 35 are provided in the housing 1. A left slot is provided between the left latch 34 and the inner wall of the housing 1, and a right slot is provided between the right latch 35 and the inner wall of the housing 1.

[0083] The left spring piece 32 includes a left elastic arm 36, a left transition portion 37 and a left abutting arm 38;

[0084] The left transition portion 37 is inserted into the left slot, the left abutting arm 38 is connected to one end of the left transition portion 37 and abuts against the biopsy valve 22, and the left elastic arm 36 is connected to the other end of the left transition portion 37 and abuts against the first button 2 and is used to drive the first button 2 to rotate toward the first locking position;

[0085] The right spring piece 33 includes a right elastic arm 39, a right transition portion 40 and a right abutting arm 41;

[0086] The right transition portion 40 is inserted into the right slot, the right abutment arm 41 is connected to one end of the right transition portion 40 and abuts against the biopsy valve 22, and the right elastic arm 39 is connected to the other end of the right transition portion 40 and abuts against the second button 3 and is used to drive the second button 3 to rotate toward the second locking position.

[0087] In this embodiment, the housing 1 includes a left shell 42 and a right shell 43 , and the left shell 42 is connected to the right shell 43 .

[0088] In summary, first, the first button 2 and the second button 3 are pressed to rotate them to the open state against the elastic force of the elastic member 4, and then the connector 6 is inserted into the connecting channel 9. Then, the first button 2 and the second button 3 are released, and the first button 2 is driven by the elastic member 4 to rotate to the first locking position, thereby driving the first latch 10 to snap into one end of the slot 7, and the second button 3 is driven by the elastic member 4 to rotate to the second locking position, thereby driving the second latch 11 to snap into the other end of the slot 7, thereby locking the connector 6 in the connecting channel 9, thereby stably and firmly connecting the housing 1 to the connector 6. The guidewire is then inserted into the endoscope handle 5, and when the guidewire head reaches the predetermined position, the tail of the guidewire is wrapped around the wire locking cantilever 8, thereby securing the guidewire and preventing it from shifting. Among them, by snapping the first latch 10 and the second latch 11 into the slot 7, the connector 6 can be firmly and reliably locked in the connecting channel 9, so that the shell 1 is stably and firmly connected to the connector 6, thereby greatly improving the firmness and stability of the connection to the endoscope handle 5, avoiding the problems of loosening and displacement, and thus avoiding the guide wire from shifting and deviating from the predetermined position.

[0089] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A firmly installed guide wire locking device, characterized in that: It comprises a housing (1), a first button (2), a second button (3) and an elastic member (4); The housing (1) is provided with a wire locking cantilever (8) for connecting to a guide wire to fix the guide wire, and the housing (1) is also provided with a connecting channel (9) for the connector (6) in the endoscope handle (5) to extend into; The first button (2) is rotatably connected to the housing (1), and the first button (2) has a first latch (10) located on one side of the connecting channel (9); The second button (3) is rotatably connected to the housing (1), and the second button (3) has a second latch (11) located on the other side of the connecting channel (9); The elastic member (4) is installed in the housing (1) and abuts against the first button (2) and the second button (3) respectively. When the connector (6) extends into the connecting channel (9), the first button (2) is used to rotate to a first locking position under the drive of the elastic member (4) and thereby drive the first latch (10) to snap into one end of the slot (7) in the connector (6), and the second button (3) is used to rotate to a second locking position under the drive of the elastic member (4) and thereby drive the second latch (11) to snap into the other end of the slot (7), thereby locking the connector (6) in the connecting channel (9); The biopsy port (21) in the endoscope handle (5) is provided in the connector (6), and a biopsy valve (22) is installed in the housing (1) for contacting with the connector (6) to seal the biopsy port (21); The housing (1) is further provided with a wire threading channel (23) located above the biopsy valve (22).

2. The securely mounted guidewire locking device according to claim 1, wherein: The first button (2) has a first pressing portion (12), and the first pressing portion (12) is used to be pressed to drive the first button (2) to overcome the elastic force of the elastic member (4) and rotate, thereby driving the first latch (10) to exit the latch slot (7); The second button (3) has a second pressing portion (13), and the second pressing portion (13) is used to be pressed to drive the second button (3) to overcome the elastic force of the elastic member (4) and rotate, thereby driving the second latch (11) to exit the latch slot (7).

3. The securely mounted guidewire locking device according to claim 1, wherein: The end of the first latch tongue (10) has a first arc-shaped latch joint (14) for latching into the latch slot (7), and the end of the second latch tongue (11) has a second arc-shaped latch joint (15) for latching into the latch slot (7).

4. The securely mounted guidewire locking device according to claim 3, wherein: The first latch tongue (10) is further provided with a first guide conical portion (16) located below the first arc-shaped latch joint (14), and the second latch tongue (11) is further provided with a second guide conical portion (17) located below the second arc-shaped latch joint (15).

5. The securely mounted guidewire locking device according to claim 1, wherein: The wire locking cantilever (8) is provided with a locking block (18) and a locking groove (19), and a limiting groove is provided between the locking block (18) and the wire locking cantilever (8).

6. The securely mounted guidewire locking device according to claim 1, wherein: The lower end portion of the housing (1) is provided with an anti-rotation pin (20) for abutting against the outer wall of the endoscope handle (5) to prevent the housing (1) from rotating relative to the endoscope handle (5).

7. The securely mounted guidewire locking device according to claim 1, wherein: The elastic member (4) comprises a main body (24), a first elastic arm (25) and a second elastic arm (26); The main body (24) is provided with an inserting hole (27), and the inserting hole (27) is sleeved on the lower end portion of the biopsy valve (22); The first elastic arm (25) is connected to one end of the main body (24), and the first elastic arm (25) abuts against the first button (2) and is used to drive the first button (2) to rotate toward the first locking position; The second elastic arm (26) is connected to the other end of the main body (24), and the second elastic arm (26) abuts against the second button (3) and is used to drive the second button (3) to rotate toward the second locking position.

8. The securely mounted guidewire locking device according to claim 7, wherein: The lower end portion of the biopsy valve (22) is provided with a step portion (28) and a downwardly protruding insertion head (29); The insertion hole (27) is sleeved on the insertion head (29); The upper end surface of the main body (24) abuts against the step portion (28); The housing (1) is further provided with a lower abutting portion (30) abutting against the lower end surface of the main body (24) and an upper abutting portion (31) abutting against the upper end surface of the biopsy valve (22).

9. The securely mounted guidewire locking device according to claim 1, wherein: The elastic member (4) includes a left spring sheet (32) and a right spring sheet (33); a left latch (34) and a right latch (35) are provided in the housing (1); a left slot is provided between the left latch (34) and the inner wall of the housing (1); and a right slot is provided between the right latch (35) and the inner wall of the housing (1); The left spring sheet (32) comprises a left elastic arm (36), a left transition portion (37) and a left abutting arm (38); The left transition portion (37) is inserted into the left slot, the left abutting arm (38) is connected to one end of the left transition portion (37) and abuts against the biopsy valve (22), and the left elastic arm (36) is connected to the other end of the left transition portion (37) and abuts against the first button (2) and is used to drive the first button (2) to rotate toward the first locking position; The right spring piece (33) comprises a right elastic arm (39), a right transition portion (40) and a right abutting arm (41); The right transition portion (40) is inserted into the right slot, the right abutting arm (41) is connected to one end of the right transition portion (40) and abuts against the biopsy valve (22), and the right elastic arm (39) is connected to the other end of the right transition portion (40) and abuts against the second button (3) and is used to drive the second button (3) to rotate toward the second locking position.

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