Vascular surgical interventional fixation devices

Abstract

This invention relates to the technical field of interventional therapeutic devices, and in particular to a vascular surgical interventional fixation device, comprising: a support plate for supporting other components, with a through hole in its center for a puncture needle to pass through; a locking member fixed to the bottom surface of the support plate for fixing the support plate to the patient's body; two adjustment components, respectively disposed on both sides of the through hole; and a fixing frame for fixing the syringe, the fixing frame being mounted on the output ends of the two adjustment components; the adjustment components comprising: a track fixed to the top of the support plate along the length of the through hole; a sliding plate slidably connected to the track, the sliding plate having a fixing shaft fixed thereon; and a bracket fixed to the sliding plate, which is semi-circular and coaxial with the fixing shaft; its structure is simple, and after being fixed to the patient's body, it allows for convenient adjustment of the angle and position of the puncture needle without causing discomfort to the patient, and can fix different types of puncture needles, improving surgical efficiency and safety.

Description

Technical Field

[0001] This invention relates to the technical field of interventional therapeutic devices, and in particular to a vascular surgical interventional fixation device. Background Technology

[0002] In modern medical practice, interventional vascular surgery is widely used to treat various diseases due to its advantages such as minimal invasiveness and rapid recovery. These procedures typically involve inserting a needle or other thin instrument through the skin into the blood vessel to achieve diagnostic or therapeutic purposes. Accuracy and stability during the puncture process are crucial to ensuring the success of the procedure.

[0003] However, existing puncture techniques still have some shortcomings in practical applications. Traditional puncture methods usually rely on manual operation by doctors, who continuously rotate the needle to adjust its position and angle in order to find the optimal puncture path. Although this rotation method can achieve adjustment to a certain extent, since the entire device is fixed to the human body, repeated rotation may cause discomfort to the patient or even local tissue damage.

[0004] Furthermore, existing interventional fixation devices have a relatively simple design, making it difficult to accommodate different types and sizes of puncture needles. This means that medical staff may need to frequently change different fixation devices when facing different surgical needs. This not only prolongs the surgical preparation time but may also lead to unnecessary interruptions during the operation, affecting the efficiency and safety of the procedure. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a vascular surgical interventional fixation device. This device has a simple structure and, after being fixed to the patient's body, allows for convenient adjustment of the angle and position of the puncture needle without causing discomfort. Furthermore, it can fix different types of puncture needles, improving surgical efficiency and safety.

[0006] The vascular surgical interventional fixation device of the present invention includes:

[0007] A support plate is used to support other components, and a through hole is provided in the middle for the puncture needle to pass through;

[0008] Locking element, fixed to the bottom surface of the support plate, is used to fix the support plate to the patient's body;

[0009] There are two adjustment components, one on each side of the through hole;

[0010] A retainer is used to hold the syringe in place; the retainer is mounted on the output end of the two adjustment components.

[0011] The adjustment components include:

[0012] The track is fixed to the top of the support plate along the length of the through hole;

[0013] The sliding plate is slidably connected to the track, and the sliding plate is fixed with a fixed shaft.

[0014] The bracket, fixed to the sliding plate, is semi-circular in shape, and the bracket is coaxial with the fixed shaft;

[0015] A rotating rod, one end of which is rotatably connected to a fixed shaft, and the other end of which slides along the bracket;

[0016] The fixing frame is fixed to the other end of the two rotating rods;

[0017] Also includes:

[0018] Control component one is mounted on a rotating rod and is used to control the syringe angle;

[0019] Control component one includes:

[0020] Handle 1 is fixed to a rotating rod, and one end of the operating handle 1 is rotatably mounted on the hinge seat 1.

[0021] Slide rod one slides on the rotating rod, and elastic element one is fitted on slide rod one;

[0022] The first clamping block is fixed to the bottom end of the first sliding rod; the two ends of the first elastic element abut against the first rotating rod and the first clamping block respectively; when the angle of the rotating rod is fixed, the first clamping block is tightly attached to the fixed shaft;

[0023] Transmission component one, one end of which is connected to one end of operating handle one, and the other end of which is connected to slide rod one;

[0024] It also includes: control component two, which is set on another rotating rod for controlling the position of the syringe.

[0025] As a preferred embodiment of the present invention, limiters are provided on both sides of the track.

[0026] As a preferred embodiment of the present invention, the limiting element is a bolt.

[0027] As a preferred embodiment of the present invention, the control component two includes:

[0028] Handle 2 is fixed to another rotating rod, and one end of operating handle 2 is rotatably mounted on handle 2 via hinge 2.

[0029] Slide rod two slides on the slide plate, and elastic element two is fitted on slide rod two;

[0030] The second clamping block is fixed to the bottom end of the second sliding rod; the two ends of the second elastic element abut against the sliding plate and the support plate respectively; when the position of the sliding plate is fixed, the second clamping block is in close contact with the support plate.

[0031] Transmission component two has one end connected to one end of operating handle two, and the other end connected to slide rod two.

[0032] As a preferred embodiment of the present invention, both the first clamping block and the second clamping block are provided with an anti-slip coating at their bottoms.

[0033] As a preferred embodiment of the present invention, both handle one and handle two are provided with multiple annular anti-slip protrusions arranged side by side.

[0034] As a preferred embodiment of the present invention, it further includes:

[0035] The movable frame is shaped like a gate and slides longitudinally onto the fixed frame.

[0036] The moving mechanism, mounted on the fixed frame, is used to drive the moving frame to slide.

[0037] A clamping assembly, mounted on a movable frame, is used to secure the syringe.

[0038] As a preferred embodiment of the present invention, the moving mechanism includes:

[0039] The screw sleeve is fixedly connected to the movable frame;

[0040] Lead screw one is rotatably mounted on a fixed frame, and lead screw one is threadedly connected to a screw sleeve;

[0041] The power mechanism is fixed on the fixed frame, and the output end of the power mechanism is connected to the lead screw for transmission.

[0042] As a preferred embodiment of the present invention, the clamping assembly includes:

[0043] The base plate is fixed to the bottom of the movable frame and contacts the bottom of the syringe.

[0044] Lead screw two is threadedly connected to the moving frame;

[0045] The top plate is located above the bottom plate and is rotatably connected to the second lead screw. The top plate is fixed with the first optical axis that is slidably connected to the moving frame.

[0046] As a preferred embodiment of the present invention, the clamping assembly further includes:

[0047] Lead screw three is threadedly connected to the moving frame;

[0048] The side plate is rotatably connected to the lead screw three, and the side plate is fixed with the optical axis two, which is slidably connected to the moving frame.

[0049] Compared with the prior art, the beneficial effects of the present invention are as follows: In use, the support plate is first placed on the patient's body, and then the locking device is used to securely fix the support plate. Then, the syringe is fixed on the fixing frame. When it is necessary to adjust the angle of the syringe, one hand holds the control component two, and the other hand holds the handle one of the control component one, and presses the operating handle one to make the operating handle one rotate around the hinge seat one, thereby driving the transmission component one to move. Since the transmission component one connects the operating handle one and the slide rod one, the slide rod one and the clamping block one both move upward, so that the clamping block one disengages from the fixed shaft. At this time, the rotating rod, the fixing frame and the syringe can rotate around the fixed shaft. The shaft rotates, and during the rotation, the other end of the rotating rod slides along the support, improving the stability of the adjustment process. When the appropriate angle is reached, the first operating handle is released. Under the elastic force of the first elastic element, the first clamping block descends and re-contacts the fixed shaft. The first operating handle also returns to its initial state, fixing the angle of the rotating rod, the fixed frame, and the syringe. Then, the position of the syringe can be adjusted by the second control component. The principle of the second control component is roughly the same as that of the first control component. Compared with the existing technology that adjusts the angle and position by continuous rotation, this method does not burden the patient's body and reduces the patient's discomfort. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of the present invention;

[0051] Figure 2 yes Figure 1 A structural diagram from the right-hand perspective;

[0052] Figure 3 yes Figure 1 A structural diagram from the left-hand perspective;

[0053] Figure 4 yes Figure 3 Enlarged view of part A in the middle;

[0054] Figure 5 This is a structural diagram of the adjustment component and control component two;

[0055] Figure 6 This is a structural diagram of the fixed frame, the movable frame, and the clamping assembly.

[0056] The attached diagram shows the following components: 1. Support plate; 2. Through hole; 3. Locking element; 4. Adjusting assembly; 41. Rail; 42. Sliding plate; 43. Fixed shaft; 44. Bracket; 45. Rotating rod; 5. Fixed frame; 6. Control assembly one; 61. Handle one; 62. Hinge one; 63. Operating handle one; 64. Slide rod one; 65. Elastic element one; 66. Pressing block one; 67. Transmission component one; 7. Control assembly two; 71. Handle two; 72. 73. Hinge seat 2; 74. Operating handle 2; 75. Slide rod 2; 76. Elastic element 2; 77. Clamping block 2; 78. Transmission element 2; 9. Limiting element; 10. Moving frame; 11. Moving mechanism; 101. Screw sleeve; 102. Lead screw 1; 103. Power mechanism; 11. Clamping assembly; 111. Base plate; 112. Lead screw 2; 113. Top plate; 114. Optical axis 1; 115. Lead screw 3; 116. Side plate; 117. Optical axis 2. Detailed Implementation

[0057] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0058] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0059] Secondly, the term "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0060] Example

[0061] Reference Figures 1-5 This embodiment provides a vascular surgical interventional fixation device, comprising:

[0062] Support plate 1 is used to support other components, and a through hole 2 is provided in the middle for the puncture needle to pass through;

[0063] Locking element 3 is fixed to the bottom surface of support plate 1 and is used to fix support plate 1 to the patient's body. Locking element 3 can be Velcro or buckle and can be freely adjusted to suit the patient.

[0064] The adjustment components 4 consist of two parts, which are respectively located on both sides of the through hole 2;

[0065] like Figure 3As shown, the fixing frame 5 is gate-shaped and is used to fix the syringe. The puncture needle is fixed at the bottom of the syringe. The fixing frame 5 is installed on the output end of the two adjusting components 4.

[0066] Adjustment component 4 includes:

[0067] Track 41 is fixed to the top of support plate 1 along the length of through hole 2;

[0068] The sliding plate 42 is slidably connected to the track 41, and the sliding plate 42 is fixed with a fixed shaft 43.

[0069] The bracket 44 is fixed on the sliding plate 42, is semi-circular, and is coaxial with the fixed shaft 43;

[0070] The rotating rod 45 has one end rotatably connected to the fixed shaft 43 and the other end sliding along the bracket 44, so that the rotating rod 45 can rotate around the fixed shaft 43;

[0071] The fixing frame 5 is fixed to the other end of the two rotating rods 45, so that the fixing frame 5, the syringe, etc. can rotate around the fixing axis 43.

[0072] Also includes:

[0073] Control component 6 is mounted on a rotating rod 45 and is used to control the syringe angle;

[0074] like Figure 2 and Figure 4 As shown, control component 6 includes:

[0075] Handle 61 is fixed to a rotating rod 45. Handle 61 is rotatably mounted with one end of operating handle 63 via hinge seat 62. Operating handle 63 is located at the bottom end of handle 61.

[0076] Slide rod 64 slides on rotating rod 45. Elastic element 65 is fitted on slide rod 64. Elastic element 65 is a spring.

[0077] The clamping block 66 is fixed to the bottom end of the slide rod 64; the two ends of the elastic element 65 abut against the rotating rod 45 and the clamping block 66 respectively; when the angle of the rotating rod 45 is fixed, the clamping block 66 is close to the fixed shaft 43. In order to increase the contact area, the side of the clamping block 66 that is close to the fixed shaft 43 is set into an arc shape.

[0078] Transmission component 67, one end of which is connected to one end of operating handle 63, and the other end of which is connected to slide rod 64. Transmission component 67 is made of steel wire rope or nylon rope.

[0079] It also includes: control component 2 7, which is mounted on another rotating rod 45 for controlling the position of the syringe;

[0080] The specific working process of this device is as follows: In use, first place the support plate 1 on the patient's body, then use the locking piece 3 to securely fix the support plate 1. Then fix the syringe on the fixing frame 5. When it is necessary to adjust the angle of the syringe, hold the control component 7 with one hand and the handle 61 of the control component 6 with the other hand, and press the operating handle 63 to rotate the operating handle 63 around the hinge seat 62 towards the handle 61, thereby driving the transmission component 67 to move. Since the transmission component 67 connects the operating handle 63 and the slide rod 64, the slide rod 64 and the clamping block 66 both move upwards, causing the clamping block 66 to disengage from the fixed shaft 43. At this time, the rotating rod 45, the fixing frame 5, and the syringe... The syringe can then rotate around the fixed axis 43. During the rotation, the other end of the rotating rod 45 slides along the bracket 44, which improves the stability of the adjustment process. When the appropriate angle is reached, the operating handle 63 is released. Under the elastic force of the elastic element 65, the clamping block 66 descends and re-contacts the fixed axis 43. The operating handle 63 also returns to its initial state, thus fixing the angle of the rotating rod 45, the fixed bracket 5, and the syringe. Then, the position of the syringe can be adjusted by the control component 7. The principle of the control component 7 is roughly the same as that of the control component 6. Compared with the existing technology of adjusting the angle and position by continuous rotation, it will not put a burden on the patient's body and reduce the patient's discomfort.

[0081] Without the limiting element 8, the sliding plate 42 may disengage from the track 41. Disengagement of the sliding plate 42 from the track 41 could lead to a sudden interruption of the surgery, requiring the doctor to stop and readjust or repair the device, thus prolonging the surgery time. The present invention makes the following improvements: Figure 1 As shown, limiters 8 are provided on both sides of the track 41. The limiters 8 form physical barriers on both sides of the track 41, effectively preventing the sliding plate 42 from detaching from the track 41 during the sliding process. Doctors can operate the device with more confidence without worrying about the risk of the sliding plate 42 detaching from the track 41, making the operation simpler and more intuitive.

[0082] If the limiting member 8 is fixedly connected to the track 41, it will make it difficult to separate the sliding plate 42 from the track 41, which will cause some inconvenience during maintenance of this device. As a preferred solution of the present invention, such as Figure 1 As shown, the limiting component 8 is a bolt. The bolt, as the limiting component 8, can be tightened or loosened at any time. When cleaning or replacing parts is required, the limiting component 8 can be easily removed, which is convenient for maintenance and upkeep.

[0083] Control component 6 and control component 7 are respectively located on both sides of the fixing frame 5. When it is necessary to adjust the position or angle of the syringe, both hands can operate control component 6 and control component 7 respectively, making it more convenient and easier to adjust the position and angle of the syringe. Figures 1-3 and Figure 5 As shown, in a preferred embodiment of the present invention, control component 7 includes:

[0084] Handle 2 71 is fixed to another rotating rod 45. Handle 2 71 is rotatably mounted with one end of operating handle 2 73 via hinge seat 2 72.

[0085] Slide rod 74 slides on slide plate 42, and elastic element 75 is fitted on slide rod 74;

[0086] The second clamping block 76 is fixed to the bottom end of the second sliding rod 74; the two ends of the second elastic element 75 abut against the sliding plate 42 and the support plate 1 respectively, and the second elastic element 75 is a spring; when the position of the sliding plate 42 is fixed, the second clamping block 76 is in close contact with the support plate 1.

[0087] Transmission component 2 77 has one end connected to one end of the operating handle and the other end connected to slide rod 2 74. Transmission component 2 77 is made of steel wire rope or nylon rope. In order to prevent the position of clamping block 2 76 from being affected when adjusting the syringe angle, when clamping block 2 76 is in contact with support plate 1, transmission component 2 77 is in a relatively loose state and will not affect the state of clamping block 2 76 when adjusting the angle, so that the position of slide plate 42 remains unchanged.

[0088] The specific working process of control component 2 7 is as follows: When it is necessary to adjust the position of the fixed frame 5 and the syringe, hold handle 2 71 and press operation handle 2 73 to rotate operation handle 2 73 around hinge seat 2 72 toward handle 2 71. Transmission component 2 77 is gradually tightened, driving slide rod 2 74 and clamping block 2 76 to move upward. Elastic component 2 75 is compressed. After clamping block 2 76 is disengaged from support plate 1, hold handle 1 61 and handle 2 71 to move sliding plate 42 along track 41, thereby adjusting the position of fixed frame 5 and syringe. During this process, the relative position of clamping block 1 66 and fixed shaft 43 remains unchanged, so the fixed frame 5 and syringe maintain an unchanged angle. After the position adjustment is completed, release operation handle 2 73. Under the elastic force of elastic component 2 75, clamping block 2 76 re-contacts support plate 1, fixing the position of fixed frame 5 and syringe.

[0089] It should be noted that control component 6 and control component 7 can be used simultaneously or individually without affecting the other.

[0090] Without an anti-slip coating, clamping blocks 66 and 76 are prone to slipping when in contact with the fixed shaft 43 or the surface of the support plate 1. This can lead to instability of the rotating rod 45 and the fixed frame 5 at the set angle and position. As a preferred embodiment of the present invention, the bottom of clamping blocks 66 and 76 are provided with an anti-slip coating. The anti-slip coating can significantly increase the friction between clamping blocks 66 and the fixed shaft 43 or between clamping blocks 76 and the surface of the support plate 1, preventing relative slippage and ensuring the stability of the device.

[0091] Smooth handle surfaces can easily cause hands to slip. As a preferred embodiment of the present invention, multiple annular anti-slip protrusions are arranged side by side on both handle 1 61 and handle 2 71. The annular anti-slip protrusions increase the friction of the handle surface, prevent hands from slipping, and ensure that doctors can firmly grip the handle during operation.

[0092] After adjusting the angle and position of the syringe, if the distance between the puncture needle and the body is too large, the puncture needle may become unusable. As a preferred embodiment of this invention, such as... Figure 1 and Figure 3 As shown, it also includes:

[0093] The movable frame 9 is shaped like a door and is longitudinally slidably mounted on the fixed frame 5;

[0094] The moving mechanism 10 is mounted on the fixed frame 5 and is used to drive the moving frame 9 to slide.

[0095] The clamping assembly 11 is mounted on the movable frame 9 and is used to fix the syringe.

[0096] When in use, the syringe is fixed on the clamping assembly 11, and then the moving mechanism 10 is operated to move the moving frame 9, the clamping assembly 11 and the syringe at the same time, so that the distance between the puncture needle and the body can be adjusted. After adjusting to the optimal distance, the puncture is performed, which improves the convenience of use.

[0097] As a preferred embodiment of the present invention, such as Figure 3 and Figure 4 As shown, the moving mechanism 10 includes:

[0098] Screw sleeve 101 is fixedly connected to the movable frame 9;

[0099] Lead screw 102 is rotatably mounted on fixed bracket 5, and lead screw 102 is threadedly connected to screw sleeve 101;

[0100] The power mechanism 103 is fixed on the fixed frame 5. The power mechanism 103 adopts a servo motor. The output end of the power mechanism 103 is connected to the lead screw 102. The power mechanism 103 is connected to the lead screw 102 through a synchronous belt or chain.

[0101] The specific working process of the moving mechanism 10 is as follows: After the power mechanism 103 is turned on, the power is transmitted to the lead screw 102 through the synchronous belt or chain. The lead screw 102 rotates and the rotational motion is converted into the linear motion of the screw sleeve 101 through the threaded connection. The moving frame 9 slides longitudinally along the fixed frame 5 together with the screw sleeve 101. The lead screw drive can achieve very high positional accuracy, usually reaching the micron level, which is very important for medical operations that require high precision.

[0102] As a preferred embodiment of the present invention, such as Figure 6 As shown, the clamping assembly 11 includes:

[0103] Base plate 111, such as Figure 2 and Figure 6 As shown, the bottom plate 111 is fixed to the bottom of the movable frame 9 and contacts the bottom of the syringe;

[0104] Lead screw 2 112 is threadedly connected to the movable frame 9;

[0105] Top plate 113, such as Figure 2 and Figure 4 As shown, above the base plate 111, the top plate 113 is rotatably connected to the second lead screw 112, and the top plate 113 is fixed with the optical axis 114 which is slidably connected to the movable frame 9;

[0106] The specific usage method of clamping assembly 11 is as follows: The position of screw 112 and moving frame 9 is adjusted by rotating screw 112. Since top plate 113 is rotatably connected to screw 112, the position of top plate 113 and moving frame 9 also changes. To prevent top plate 113 from rotating, optical axis 114 is provided so that when screw 112 rotates, optical axis 114 and top plate 113 slide relative to moving frame 9. When fixing the syringe, first place the syringe on the bottom plate 111 from the side. In order to increase the contact area, one side of moving frame 9 is set as an arc surface. After the syringe is close to the arc surface, rotate screw 112 to make top plate 113 contact the top of syringe to prevent moving frame 9 and syringe from sliding.

[0107] If only the top plate 113 and the bottom plate 111 fix the syringe, the syringe is very likely to become misaligned. To prevent misalignment, the present invention makes the following improvements, such as... Figure 2 and Figure 6 As shown, the clamping assembly 11 also includes:

[0108] The lead screw 3115 is threadedly connected to the movable frame 9;

[0109] Side plate 116 is rotatably connected to lead screw 115, and optical axis 117, which is slidably connected to movable frame 9, is fixed on side plate 116.

[0110] When the side plate 116 is in operation, the screw 115 is rotated to bring the side plate 116 and the optical axis 117 closer to the syringe, so that the side plate 116 contacts the surface of the syringe. Figure 6 As shown, the side plate 116, top plate 113 and bottom plate 111 form a triangle, which limits the syringe in three directions and improves the stability of the syringe.

[0111] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0112] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An extravascular surgical site closure device comprising: The utility model relates to a kind of needle fixing device, including: Supporting plate (1) for carrying other components, wherein the bottom is provided with through hole (2) for puncture needle to pass through; Locking member (3) is fixed on the bottom surface of the supporting plate (1), for fixing the supporting plate (1) on the patient's body; Adjusting assembly (4) is two, and is arranged on the both sides of through hole (2) respectively; Fixing frame (5) for fixing needle cylinder, the fixing frame (5) is installed on the output of two adjusting assembly (4); Adjusting assembly (4) includes: Track (41) is fixed on the top of the supporting plate (1) along the length direction of through hole (2); Sliding plate (42) is slidably connected with the track (41), and the fixed shaft (43) is fixed on the sliding plate (42); Support (44) is fixed on the sliding plate (42), and it is semicircular, and the support (44) is coaxial with the fixed shaft (43); Rotary lever (45) is rotatably connected with the fixed shaft (43) at one end, and is slidably connected with the support (44) at the other end; Wherein, the fixing frame (5) is fixed on the other end of two rotary levers (45); Further including: Control assembly one (6) is arranged on one rotary lever (45), for controlling needle cylinder angle; Control assembly one (6) includes: Handle one (61) is fixed on one rotary lever (45), and one end of operating handle one (63) is rotatably installed in handle one (61) by hinge base one (62); Slide bar one (64) is slidably arranged on the rotary lever (45), and elastic member one (65) is sleeved on the slide bar one (64); Compression block one (66) is fixed on the bottom end of the slide bar one (64);The both ends of elastic member one (65) are respectively abutted with the rotary lever (45) and the compression block one (66);When the rotary lever (45) angle is fixed, the compression block one (66) is tightly attached to the fixed shaft (43); Transmission member one (67) is connected with one end of operating handle one (63) at one end, and is connected with the slide bar one (64) at the other end; Further including: control assembly two (7) is arranged on another rotary lever (45), for controlling needle cylinder position.

2. The extravascular surgical site securing apparatus of claim 1, wherein, Limiting piece (8) is arranged on the both sides of the track (41).

3. The extravascular surgical site securing apparatus of claim 2, wherein, The limiting piece (8) is bolt.

4. The extravascular surgical site securing apparatus of claim 1, wherein, Control assembly two (7) includes: Handle two (71) is fixed on another rotary lever (45), and one end of operating handle two (73) is rotatably installed in handle two (71) by hinge base two (72); Slide bar two (74) is slidably arranged on the sliding plate (42), and elastic member two (75) is sleeved on the slide bar two (74); Compression block two (76) is fixed on the bottom end of the slide bar two (74);The both ends of elastic member two (75) are respectively abutted with the sliding plate (42) and the supporting plate (1);When the sliding plate (42) position is fixed, the compression block two (76) is tightly attached to the supporting plate (1); Transmission member two (77) is connected with one end of operating handle two (73) at one end, and is connected with the slide bar two (74) at the other end.

5. The extravascular surgical site securing device of claim 4, wherein, The bottom of the pressing block one (66) and the pressing block two (76) is provided with an anti-skid coating.

6. The extravascular surgical site access device of claim 4, wherein, The handle one (61) and the handle two (71) are provided with a plurality of annular anti-skid protrusions side by side.

7. The extravascular surgical site securing device as recited in claim 1, wherein, Further comprising: A moving frame (9) in a door type is longitudinally slidably installed on the fixed frame (5); A moving mechanism (10) is arranged on the fixed frame (5) and used for driving the moving frame (9) to slide; A clamping assembly (11) is arranged on the moving frame (9) and used for fixing the needle cylinder.

8. The extravascular surgical site securing device of claim 7, wherein, The moving mechanism (10) comprises: A screw sleeve (101) fixedly connected with the moving frame (9); A lead screw one (102) rotatably installed on the fixed frame (5), the lead screw one (102) being in threaded connection with the screw sleeve (101); A power mechanism (103) fixed on the fixed frame (5), an output end of the power mechanism (103) being in transmission connection with the lead screw one (102).

9. The extravascular surgical site securing device as defined in claim 7, wherein, The clamping assembly (11) comprises: A bottom plate (111) fixed on the bottom end of the moving frame (9), the bottom plate (111) being in contact with the bottom of the needle cylinder; A lead screw two (112) in threaded connection with the moving frame (9); A top plate (113) located above the bottom plate (111), the top plate (113) being in rotary connection with the lead screw two (112), the top plate (113) being fixed with an optical axis one (114) in sliding connection with the moving frame (9).

10. The extravascular surgical site access device according to any one of claims 9, wherein, The clamping assembly (11) further comprises: A lead screw three (115) in threaded connection with the moving frame (9); A side plate (116) in rotary connection with the lead screw three (115), the side plate (116) being fixed with an optical axis two (117) in sliding connection with the moving frame (9).

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