A laparoscopic gastrointestinal surgery fluorescent imaging agent administration device

Abstract

The application discloses a laparoscopic gastrointestinal surgery fluorescent developing agent administration device, and relates to the field of developing agent administration devices, which comprises a support seat, a needle cylinder assembly is arranged at the top end of the support seat, a controller is fixedly arranged on the front side of the support seat, the needle cylinder assembly comprises an injection cylinder with scales, a rubber plug is arranged in the injection cylinder, the outer end of the rubber plug is in contact with the inner wall of the injection cylinder, and a push rod is fixedly arranged on one side of the rubber plug. The connecting assembly is connected with the pointer shaft and the other output shaft of the double-head motor, so as to drive the rotation of the pointer shaft and the pointer, the angular velocity of the rotation of the pointer shaft is the same as that of the upper driving shaft, the radius of the rotation of the pointer is larger, the linear velocity is also larger, the speed change of the upper driving shaft is amplified through the pointer, the scale change of the pointer on the scale disc can be observed more obviously and intuitively, and the administration effect can be observed more obviously and intuitively.

Description

Technical Field

[0001] This invention relates to the field of imaging agent delivery devices, specifically to an imaging agent delivery device for laparoscopic gastrointestinal surgery. Background Technology

[0002] Contrast agents, also known as contrast agents, are chemical products that can be injected or ingested into the human body. Their density differs significantly from that of the surrounding human tissue, and the injected or ingested parts of the body become more visible under X-ray irradiation.

[0003] In the medical field, fluorescent contrast agents can be used to improve the imaging effect of human tissues during patient treatment or testing, thereby improving the accuracy of detection and treatment. For example, fluorescent contrast agents can be injected into the surgical site during laparoscopic gastrointestinal surgery.

[0004] The method of injecting fluorescent contrast agents is similar to that of injecting other drugs, except that it requires a slow and uniform injection and cannot be completed in a short time. Manual injection makes it difficult to maintain a uniform speed. Therefore, existing technologies use professional injection and pushing equipment for drug administration, such as the fluorescent contrast injection device for parathyroid glands published in CN215780475U.

[0005] In the existing technology, the administration rate of fluorescent contrast agents is so slow that it is impossible to observe obvious changes in the scale on the syringe in a short period of time, and the effect of administration is not obvious or intuitive enough. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a laparoscopic gastrointestinal surgery fluorescent contrast agent delivery device. By amplifying the speed change of the upper drive shaft through a pointer, and observing the scale changes of the pointer on the dial, the effect of drug delivery can be more clearly and intuitively observed, effectively solving the problems in the prior art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a laparoscopic gastrointestinal surgery fluorescent contrast agent delivery device, including a support base, a syringe assembly at the top of the support base, a controller fixedly mounted on the front side of the support base, and the syringe assembly including a graduated injection cylinder, the fluorescent contrast agent being filled inside the injection cylinder;

[0008] The syringe contains a rubber stopper, the outer end of which contacts the inner wall of the syringe. A push rod is fixedly mounted on one side of the rubber stopper, and one end of the push rod extends to the outside of the syringe.

[0009] The support base is provided with a mounting base on one side. The mounting base is provided with an upper drive shaft and a lower drive shaft on its inner side. A dual-head motor is fixedly provided on the rear side of the mounting base. An upper roller is fixedly provided on the outer end of the upper drive shaft, and a lower roller is fixedly provided on the outer end of the lower drive shaft. The push rod is clamped between the upper roller and the lower roller. Grooves are provided on both the upper roller and the lower roller. The push rod is locked in the groove position of the two. An upper gear is fixedly provided at the front end of the upper drive shaft, and a lower gear that meshes with the upper gear is provided at the front end of the lower drive shaft.

[0010] One of the output shafts of the dual-head motor passes through the mounting base and is fixedly connected to the rear end of the upper drive shaft. A scale is provided on the rear side of the dual-head motor. A pointer shaft is provided on the front side of the scale via a rotating shaft. A pointer is fixedly provided on the outer end of the pointer shaft. A connecting component is provided at the front end of the pointer shaft. The pointer shaft is connected to the other output shaft of the dual-head motor through the connecting component. The dual-head motor is located at the output end of the controller.

[0011] Furthermore, the connecting assembly includes a second connecting bracket fixedly disposed at the rear end of another output shaft of the dual-head motor and a first connecting bracket disposed at the front end of the pointer shaft;

[0012] A connecting arm is provided between the first connecting frame and the second connecting frame. The rear end of the connecting arm extends into the interior of the first connecting frame and is movably connected to the inner wall of the first connecting frame via a rotating shaft. The front end of the connecting arm extends into the interior of the second connecting frame. A fixing pin is provided on the second connecting frame that passes through the second connecting frame and the connecting arm. The pointer shaft and the dual-head motor can be connected or disconnected through the connecting assembly.

[0013] Furthermore, a base is fixedly provided at the bottom of the support seat, and the pointer shaft is detachably provided at the top of the base. A bracket is provided at the top of the base by bolts, and one end of the bracket extends to the rear side of the dial and is fixedly connected to the dial to fix the dial.

[0014] Furthermore, a slide is fitted onto the outer end of the mounting base, and the lower drive shaft is mounted on the front side of the slide via a rotating shaft, allowing the slide to slide up and down to adjust its height;

[0015] A side plate is fixedly provided on one side of the slide block. A threaded rod is provided through the side plate by bolts. A knob is fixedly provided at the top of the threaded rod. The bottom of the threaded rod is movably connected to the top of the base by a bearing. Rotating the threaded rod can drive the side plate and the slide block.

[0016] Furthermore, a handle is fixedly provided at the end of the plunger away from the syringe, and a drain tube is fixedly provided at the end of the syringe away from the plunger. An extension hose is provided at the end of the drain tube away from the syringe through a connector, and the extension hose injects the fluorescent contrast agent into the corresponding part of the patient.

[0017] The rubber stopper has a groove on the side away from the push rod that communicates with the inside of the syringe. A pressure sensor is installed inside the groove to detect the pressure of the fluorescent developer during the injection process in real time. The pressure sensor is located at the input end of the controller. A touch screen is fixed on the front side of the support base and is located at the connection end of the controller. The touch screen can display pressure data and can also adjust the speed of the dual-head motors via touch.

[0018] Furthermore, a V-shaped groove is provided at the top of the support base, and a soft pad that serves to cushion and prevent slippage is fixed on the inner wall of the V-shaped groove.

[0019] The bottom end of the syringe is embedded in the V-groove and in contact with the soft pad. The V-groove can restrict the rolling of the syringe. A V-shaped baffle is fixed on the inner wall of the V-groove. The end of the syringe away from the push rod is in contact with the V-shaped baffle. The V-shaped baffle plays the role of blocking the syringe assembly during the injection process.

[0020] Furthermore, a protrusion is fixedly provided at the top of the support base. The protrusion is located behind the V-groove. Two elastic fixing straps are fixedly provided at the front of the protrusion. The front end of the fixing straps extends to the front of the syringe. The syringe can be fixed by covering the top of the syringe with the fixing straps.

[0021] The front side of the syringe is provided with an end plate, and the front end of the fixing strap is fixedly connected to the end plate. The end plate is provided with two threaded posts that penetrate the end plate. The threaded posts are fixedly installed on the top of the support base. The top of the threaded posts is fitted with a limiting cap through a thread, thereby fixing the front end of the fixing strap to the support base.

[0022] Compared with the prior art, the present invention provides a fluorescent contrast agent delivery device for laparoscopic gastrointestinal surgery, which has the following beneficial effects:

[0023] 1. By clamping the push rod between the upper and lower rollers, a dual-head motor drives the lower drive shaft and the lower roller to rotate, thereby driving the push rod to administer medication. The rotation of the upper and lower rollers is converted into the linear motion of the push rod. Compared with directly pushing the push rod linearly, the space required to drive the push rod is smaller, and a wider range of syringe sizes can be used. The device does not need to be designed to be too large, thus saving space.

[0024] 2. The pointer shaft is connected to the other output shaft of the dual-head motor through a connecting component, thereby driving the pointer shaft and pointer to rotate. The angular velocity of the pointer shaft is the same as that of the upper drive shaft, but the radius of the pointer rotation is larger, and the linear velocity is also greater. Therefore, the pointer amplifies the speed change of the upper drive shaft. By observing the changes in the pointer's scale on the dial, the effect of drug administration can be observed more clearly and intuitively. Attached Figure Description

[0025] Figure 1 This is a first overall structural diagram of the present invention;

[0026] Figure 2 This is a second overall structural diagram of the present invention;

[0027] Figure 3 This is an exploded view of the syringe assembly of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged view of section A in the middle;

[0029] Figure 5 This is a side sectional view of the support base of the present invention;

[0030] Figure 6 This is a structural diagram of the mounting base of the present invention;

[0031] Figure 7 This is a structural diagram of the dial of the present invention;

[0032] Figure 8 This is a system diagram of the present invention.

[0033] In the diagram: 1. Support base; 101. V-groove; 102. Pad; 103. V-shaped baffle; 2. Syringe assembly; 201. Injection barrel; 202. Drain tube; 203. Connector; 204. Extension tubing; 205. Rubber stopper; 206. Push rod; 207. Groove; 3. Fixing strap; 4. Base; 5. Mounting base; 6. Dial;

[0034] 7. Connecting assembly; 701. Connecting arm; 702. First connecting frame; 703. Second connecting frame; 704. Fixing pin; 8. Pointer shaft; 9. Controller; 10. Touch screen; 11. Pressure sensor; 12. Dual-head motor; 13. Side plate; 14. Threaded rod; 15. Slide; 16. Upper drive shaft; 17. Upper roller; 18. Upper gear; 19. Lower drive shaft; 20. Lower roller; 21. Lower gear; 22. Pointer; 23. Bracket. Detailed Implementation

[0035] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0036] like Figure 1-8As shown, the present invention provides a device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery, including a support base 1, a syringe assembly 2 at the top of the support base 1, a controller 9 fixedly mounted on the front side of the support base 1, and the syringe assembly 2 including a graduated syringe 201, the fluorescent contrast agent being filled inside the syringe 201.

[0037] The syringe 201 is provided with a rubber stopper 205 inside. The outer end of the rubber stopper 205 is in contact with the inner wall of the syringe 201. A push rod 206 is fixedly provided on one side of the rubber stopper 205. One end of the push rod 206 extends to the outside of the syringe 201.

[0038] An injection cylinder 201 filled with fluorescent contrast agent is fixed at the top of the support base 1. By pushing the push rod 206, the rubber stopper 205 moves inside the injection cylinder 201, thereby squeezing the fluorescent contrast agent (hereinafter referred to as contrast agent). The contrast agent flows through the squeezing and is injected into the corresponding part during gastrointestinal surgery, playing an auxiliary role in the surgery.

[0039] To save space, such as Figure 1 , 2 As shown in Figure 6, a mounting base 5 is provided on one side of the support base 1. An upper drive shaft 16 and a lower drive shaft 19 are provided on the inner side of the mounting base 5. A dual-head motor 12 is fixedly provided on the rear side of the mounting base 5. An upper roller 17 is fixedly provided on the outer end of the upper drive shaft 16, and a lower roller 20 is fixedly provided on the outer end of the lower drive shaft 19. A push rod 206 is clamped between the upper roller 17 and the lower roller 20. Grooves are provided on both the upper roller 17 and the lower roller 20. The push rod 206 is engaged in the groove position of the two. An upper gear 18 is fixedly provided at the front end of the upper drive shaft 16, and a lower gear 21 that meshes with the upper gear 18 is provided at the front end of the lower drive shaft 19.

[0040] The push rod 206 is clamped between the upper roller 17 and the lower roller 20. The upper drive shaft 16, the upper roller 17 and the upper gear 18 are driven to rotate by the dual-head motor 12. The lower gear 21, which meshes with the upper gear 18, rotates under the drive of the upper gear 18, causing the lower drive shaft 19 and the lower roller 20 to rotate. The upper roller 17 and the lower roller 20 push the push rod 206 to move by rotating, thereby administering the drug. The contact parts between the upper roller 17 and the lower roller 20 and the push rod 206 can be made of anti-slip material to avoid slippage during the driving process. Driving the push rod 206 in this way converts the rotation of the upper roller 17 and the lower roller 20 into the linear motion of the push rod 206. Compared with directly pushing the push rod 206 linearly, driving the push rod 206 requires less space and can accommodate more sizes of syringe components 2. It does not require the device to be designed to be too large, thus saving space.

[0041] To make the movement of the pusher 206 more intuitive, such as Figure 1 ,2 As shown in Figures 6 and 7, one of the output shafts of the dual-head motor 12 passes through the mounting base 5 and is fixedly connected to the rear end of the upper drive shaft 16. A scale 6 is provided on the rear side of the dual-head motor 12. A pointer shaft 8 is provided on the front side of the scale 6 via a rotating shaft. A pointer 22 is fixedly provided on the outer end of the pointer shaft 8. A connecting component 7 is provided at the front end of the pointer shaft 8. The pointer shaft 8 is connected to the other output shaft of the dual-head motor 12 through the connecting component 7. The dual-head motor 12 is located at the output end of the controller 9.

[0042] While the dual-head motor 12 drives the upper drive shaft 16 to rotate and drives the push rod 206, the other output shaft of the dual-head motor 12 also rotates and drives the pointer shaft 8 and pointer 22 to rotate through the connecting component 7. In this way, the angular velocities of the upper drive shaft 16 and pointer shaft 8 are the same, and the angular velocities of pointer shaft 8 and pointer 22 are also the same. However, the radius of rotation of pointer 22 is larger, and its linear velocity is also greater. Therefore, pointer 22 amplifies the speed change of the upper drive shaft 16. Through the scale change of pointer 22 on the dial 6, the effect of drug administration can be observed more obviously and intuitively.

[0043] For flexible connection of pointer shaft 8 and dual-head motor 12, such as Figure 1 , 2 As shown in Figures 7 and 8, the connecting component 7 includes a second connecting bracket 703 fixedly disposed at the rear end of another output shaft of the dual-head motor 12 and a first connecting bracket 702 disposed at the front end of the pointer shaft 8;

[0044] A connecting arm 701 is provided between the first connecting frame 702 and the second connecting frame 703. The rear end of the connecting arm 701 extends into the interior of the first connecting frame 702 and is movably connected to the inner wall of the first connecting frame 702 via a rotating shaft. The front end of the connecting arm 701 extends into the interior of the second connecting frame 703. A fixing pin 704 is provided on the second connecting frame 703 and the connecting arm 701. The pointer shaft 8 and the dual-head motor 12 can be connected or disconnected through the connecting assembly 7.

[0045] Rotate the connecting arm 701 to a horizontal position so that one end extends into the second connecting frame 703. Then connect the connecting arm 701 and the second connecting frame 703 by the fixing pin 704. The connecting assembly 7 can then connect the pointer shaft 8 and the other output shaft of the dual-head motor 12 into a whole, so that the pointer shaft 8 rotates synchronously with the upper drive shaft 16. To disconnect, simply remove the fixing pin 704 and then rotate the connecting arm 701 to remove it from the inside of the second connecting frame 703.

[0046] To move the push rod 206, it is first necessary to clamp the push rod 206, such as... Figure 1 , 2As shown in Figure 6, a base 4 is fixedly provided at the bottom of the support base 1, and the pointer shaft 8 is detachably provided at the top of the base 4. A bracket 23 is provided at the top of the base 4 by bolts. One end of the bracket 23 extends to the rear side of the dial 6 and is fixedly connected to the dial 6 to fix the dial 6.

[0047] The mounting base 5 is fitted with a slide 15 at its outer end. The lower drive shaft 19 is located on the front side of the slide 15 via a rotating shaft. The slide 15 can slide up and down to adjust its height.

[0048] A side plate 13 is fixedly provided on one side of the slide block 15. A threaded rod 14 is provided on the side plate 13 by bolts, and a knob is fixedly provided at the top of the threaded rod 14. The bottom end of the threaded rod 14 is movably connected to the top end of the base 4 by a bearing. Rotating the threaded rod 14 can drive the side plate 13 and the slide block 15.

[0049] Before starting the drug administration, the syringe assembly 2 is fixed at the top of the support base 1. At this time, the push rod 206 is located at the bottom of the upper roller 17 and is in contact with the upper roller 17, while the lower roller 20 is located at the bottom of the push rod 206. Then, the knob is turned and the threaded rod 14 is rotated. Under the action of the thread, the side plate 13 and the slide 15 move upward and drive the lower drive shaft 19 and the lower roller 20 to move upward, clamping the push rod 206 between the upper roller 17 and the lower roller 20. During this process, the angle of the lower gear 21 is adjusted so that it meshes with the upper gear 18.

[0050] The pressure required for drug administration needs to be monitored during the administration process, such as... Figure 2 , 3 As shown in Figures 4 and 8, a handle is fixedly provided at the end of the push rod 206 away from the syringe 201, and a drain pipe 202 is fixedly provided at the end of the syringe 201 away from the push rod 206. An extension hose 204 is provided at the end of the drain pipe 202 away from the syringe 201 through a connector 203. The extension hose 204 injects the fluorescent contrast agent into the corresponding part of the patient.

[0051] The rubber stopper 205 has a groove 207 on the side away from the push rod 206 that communicates with the inside of the injection cylinder 201. A pressure sensor 11 is installed inside the groove 207. The pressure of the fluorescent developer during the injection process is detected in real time by the pressure sensor 11. The pressure sensor 11 is located at the input end of the controller 9. A touch screen 10 is fixedly installed on the front side of the support base 1. The touch screen 10 is located at the connection end of the controller 9. The touch screen 10 can display pressure data and can also adjust the speed of the dual-head motor 12 by touch.

[0052] The rubber stopper 205 is pushed into the syringe 201 by the push rod 206, thereby squeezing the contrast agent to flow for drug delivery. During this process, the pressure sensor 11 inside the groove 207 can monitor the pressure change of the contrast agent and display the value on the touch screen 10, so as to facilitate real-time control of the pressure change of drug delivery.

[0053] Fix the syringe assembly 2 to the top of the support base 1, such as Figure 1 , 5 As shown, a V-shaped groove 101 is provided at the top of the support base 1, and a soft pad 102 is fixed on the inner wall of the V-shaped groove 101 to provide cushioning and anti-slip function.

[0054] The bottom end of the syringe 201 is embedded inside the V-groove 101 and in contact with the soft pad 102. The V-groove 101 can restrict the rolling of the syringe 201. A V-shaped baffle 103 is fixedly provided on the inner wall of the V-groove 101. The end of the syringe 201 away from the push rod 206 is in contact with the V-shaped baffle 103. The V-shaped baffle 103 plays the role of blocking the syringe assembly 2 during the injection process.

[0055] The syringe 201 filled with contrast agent is placed on the top of the support base 1. The lower half of the syringe 201 is located inside the V-groove 101 and in contact with the soft pad 102. One end of the syringe 201 is in contact with the V-shaped baffle 103. In this way, during the drug administration process, the push rod 206 is pushed, while the syringe 201 is fixed in place by the blocking of the V-shaped baffle 103.

[0056] The syringe 201 needs to be pressed and fixed, such as... Figure 1 , 5 As shown, a protrusion is fixedly provided at the top of the support base 1. The protrusion is located behind the V-groove 101. Two elastic fixing straps 3 are fixedly provided at the front of the protrusion. The front end of the fixing straps 3 extends to the front of the syringe 201. The syringe 201 can be fixed by covering the top of the syringe 201 with the fixing straps 3.

[0057] The front side of the syringe 201 is provided with an end plate, and the front end of the fixing band 3 is fixedly connected to the end plate. The end plate is provided with two threaded posts that penetrate the end plate. The threaded posts are fixedly installed on the top of the support base 1. The top of the threaded posts is fitted with a limiting cap through a thread, thereby fixing the front end of the fixing band 3 to the support base 1.

[0058] After placing the syringe 201 at the designated position on the top of the support base 1, cover the top of the syringe 201 with the fixing strap 3, then pass the two threaded pins through the end plate and tighten the limit cap. At this time, the fixing strap 3 is in a stretched state, and under its elastic force, it presses the syringe 201 tightly against the top of the support base 1.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A device for administering a fluorescent contrast agent in laparoscopic gastrointestinal surgery, comprising a support base (1), a syringe assembly (2) at the top of the support base (1), and a controller (9) fixedly disposed on the front side of the support base (1), characterized in that: The syringe assembly (2) includes a graduated syringe (201) filled with fluorescent contrast agent; The syringe (201) is provided with a rubber stopper (205) inside. The outer end of the rubber stopper (205) is in contact with the inner wall of the syringe (201). A push rod (206) is fixedly provided on one side of the rubber stopper (205). One end of the push rod (206) extends to the outside of the syringe (201). The support base (1) is provided with a mounting base (5) on one side. The mounting base (5) is provided with an upper drive shaft (16) and a lower drive shaft (19) on the inner side. A double-head motor (12) is fixedly provided on the rear side of the mounting base (5). An upper roller (17) is fixedly provided at the outer end of the upper drive shaft (16). A lower roller (20) is fixedly provided at the outer end of the lower drive shaft (19). The push rod (206) is sandwiched between the upper roller (17) and the lower roller (20). An upper gear (18) is fixedly provided at the front end of the upper drive shaft (16). A lower gear (21) that meshes with the upper gear (18) is provided at the front end of the lower drive shaft (19). One of the output shafts of the dual-head motor (12) passes through the mounting base (5) and is fixedly connected to the rear end of the upper drive shaft (16). A scale (6) is provided on the rear side of the dual-head motor (12). A pointer shaft (8) is provided on the front side of the scale (6) through a rotating shaft. A pointer (22) is fixedly provided on the outer end of the pointer shaft (8). A connecting component (7) is provided at the front end of the pointer shaft (8). The pointer shaft (8) is connected to the other output shaft of the dual-head motor (12) through the connecting component (7). The dual-head motor (12) is located at the output end of the controller (9).

2. The device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery according to claim 1, characterized in that: The connecting assembly (7) includes a second connecting bracket (703) fixedly disposed at the rear end of another output shaft of the dual-head motor (12) and a first connecting bracket (702) disposed at the front end of the pointer shaft (8); A connecting arm (701) is provided between the first connecting frame (702) and the second connecting frame (703). The rear end of the connecting arm (701) extends into the interior of the first connecting frame (702) and is movably connected to the inner wall of the first connecting frame (702) via a pivot. The front end of the connecting arm (701) extends into the interior of the second connecting frame (703). A fixing pin (704) is provided on the second connecting frame (703) that passes through the second connecting frame (703) and the connecting arm (701).

3. The device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery according to claim 1, characterized in that: The support base (1) is fixedly provided with a base (4) at the bottom end. The pointer shaft (8) is detachably provided at the top of the base (4). The top of the base (4) is provided with a bracket (23) by bolts. One end of the bracket (23) extends to the rear side of the dial (6) and is fixedly connected to the dial (6).

4. The device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery according to claim 3, characterized in that: The mounting base (5) is fitted with a slide (15) at its outer end, and the lower drive shaft (19) is mounted on the front side of the slide (15) via a rotating shaft; A side plate (13) is fixedly provided on one side of the slide (15). A threaded rod (14) is provided on the side plate (13) by bolts, and a knob is fixedly provided at the top of the threaded rod (14). The bottom end of the threaded rod (14) is movably connected to the top end of the base (4) by bearings.

5. The device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery according to claim 1, characterized in that: The push rod (206) is fixedly provided with a handle at one end away from the syringe (201), and the syringe (201) is fixedly provided with a drain pipe (202) at one end away from the push rod (206). The drain pipe (202) is provided with an extension hose (204) through a connector (203) at one end away from the syringe (201). The rubber stopper (205) has a groove (207) on the side away from the push rod (206) that communicates with the inside of the syringe (201). A pressure sensor (11) is provided inside the groove (207). The pressure sensor (11) is located at the input end of the controller (9). A touch screen (10) is fixedly provided on the front side of the support base (1). The touch screen (10) is located at the connection end of the controller (9).

6. The device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery according to claim 1, characterized in that: The top of the support base (1) is provided with a V-shaped groove (101), and a soft pad (102) is fixed on the inner wall of the V-shaped groove (101) to provide cushioning and anti-slip function; The bottom end of the syringe (201) is embedded in the V-groove (101) and in contact with the soft pad (102). A V-shaped baffle (103) is fixedly provided on the inner wall of the V-groove (101). The end of the syringe (201) away from the push rod (206) is in contact with the V-shaped baffle (103).

7. The device for administering fluorescent contrast agent in laparoscopic gastrointestinal surgery according to claim 6, characterized in that: The support base (1) has a protrusion fixed at the top, the protrusion is located behind the V-groove (101), and two elastic fixing bands (3) are fixed on the front side of the protrusion, the front end of the fixing bands (3) extends to the front side of the syringe (201); The front side of the injection cylinder (201) is provided with an end plate, the front end of the fixing band (3) is fixedly connected to the end plate, the end plate is provided with two threaded posts that penetrate the end plate, the threaded posts are fixedly installed on the top of the support base (1), and the top of the threaded posts is provided with a limiting cap through a threaded sleeve.

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