Fluorescent development injection and pushing device for gastrointestinal tumor operation

Abstract

The invention discloses a fluorescent developing injection-pushing device for gastrointestinal tumor surgery, and particularly relates to the technical field of developing injection-pushing devices.The fluorescent developing injection-pushing device comprises a transverse support, an injector is arranged at the top end of the transverse support, scales for displaying dosage are arranged on the surface of the injector, and a detachable connecting hose is arranged at the front end of the injector; an end pipe is fixedly arranged at the front end of the connecting hose, a detachable needle head is arranged at the front end of the end pipe, a mounting groove is formed in the front end of the transverse support, and a fixing assembly is arranged in the mounting groove. The extension plate is clamped and fixed between the pressing rod and the base plate through the elastic force of the pressing spring, after the needle pierces a tumor part, the needle is unfixed by pulling the shifting rod, the needle and an injector are connected through the connecting hose, interference to the needle due to hand shaking of a doctor can be avoided while a fluorescent developing agent is injected, and the working efficiency is improved. And the safety of the injection and pushing device is further improved.

Description

Technical Field

[0001] This invention relates to the field of imaging injection devices, and more specifically to a fluorescent imaging injection device for gastrointestinal tumor surgery. Background Technology

[0002] Fluorescent contrast agents are special dyes used in surgery, primarily for intraoperative fluorescence imaging, helping surgeons monitor and locate key tissues such as tumors and lymph nodes in real time during the procedure.

[0003] For example, during gastrointestinal tumor resection surgery, injecting a fluorescent contrast agent into the tumor site can clearly show the outline and boundaries of the tumor, helping doctors to remove the tumor more accurately, reduce the positive margin rate, and lower the local recurrence rate.

[0004] Injecting fluorescent contrast agents requires the use of specialized injection devices, such as the fluorescent contrast injection device for minimally invasive gastric surgery disclosed in CN212755834U. The existing technology for injecting fluorescent contrast agents mainly involves three steps: first, inserting the needle into the tumor site; second, manipulating the injection device to inject the fluorescent contrast agent into the tumor site; and finally, withdrawing the needle.

[0005] During the injection of fluorescent contrast agent, even slight vibrations or swaying of the doctor's hand can cause the needle to move. Since one end of the needle is currently piercing the tumor site, the movement of the needle can easily cause further injury to the patient. Therefore, the safety of the injection device in the current technology needs to be improved. Summary of the Invention

[0006] The purpose of this invention is to provide a fluorescent contrast agent injection device for gastrointestinal tumor surgery. By pulling a lever to release the fixation of the needle, and using a connecting hose to connect the needle and syringe, the device can avoid interference from the doctor's hand tremors while injecting the fluorescent contrast agent, thus further improving the safety of the injection device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fluorescent imaging injection device for gastrointestinal tumor surgery, comprising a transverse support, a syringe at the top of the transverse support, the surface of the syringe having a scale for displaying dosage, a detachable connecting hose at the front end of the syringe, an end tube fixedly provided at the front end of the connecting hose, and a detachable needle at the front end of the end tube. The front end of the horizontal support has an installation groove, and a fixing component is provided inside the installation groove. An extension plate is fixed to the outer end of the needle, and the extension plate is fixed on the fixing component. An insertion hole is provided on the extension plate to penetrate the extension plate.

[0008] Furthermore, the fixing component includes a detachable mounting piece disposed on the inner wall of the mounting groove, wherein a ball joint hinge and a return spring are fixedly disposed at the front end of the mounting piece, and the return spring is disposed on the outside of the ball joint hinge; The mounting plate has an adapter plate on its front side, and the front end of the ball joint hinge and the return spring are fixedly connected to the adapter plate.

[0009] Furthermore, a fixing arm is fixedly provided on the front side of the adapter plate, and a pad is fixedly provided on the front side of the fixing arm, with the pad located on the front side of the extension plate; A lever is provided below the fixed arm, and an indicator hole is provided through the lever. An indicator light is installed on the front side of the mounting plate, and the indicator hole is located directly in front of the indicator light. The light emitted by the indicator light can pass through the lever through the indicator hole.

[0010] Furthermore, a sliding groove is provided on the fixed arm, and a pressing spring is fixedly provided on the inner wall of the sliding groove. An insert is fixedly provided at the front end of the pressing spring, and the insert is located inside the sliding groove. The fixed arm is fitted with a movable seat at its outer end. The top end of the lever is fixedly connected to the movable seat. The insert is fixedly mounted on the inner wall of the movable seat. The top end of the movable seat is fixedly mounted with a vertical plate. The front end of the vertical plate is fixedly mounted with a pressure rod. The front end of the pressure rod is fixedly mounted with a limiting block. The limiting block can be embedded in the insertion hole. The cross-sections of the limiting block and the insertion hole are both rectangular, and their dimensions and shapes are compatible.

[0011] Furthermore, a controller is fixedly mounted on one side of the horizontal support, a camera is mounted on the front side of the pad, a display screen is hinged to the other side of the horizontal support, a light is mounted on one side of the horizontal support, the light is located in front of the controller, the camera is located at the input end of the controller, and the light, display screen and indicator light are located at the output end of the controller.

[0012] Furthermore, the bottom of the transverse support is provided with a handle, and the top of the transverse support is provided with a positioning groove. The bottom of the syringe is embedded in the positioning groove. Two elastic snap-fit ​​plates are provided on both sides of the syringe. The elastic snap-fit ​​plates are fixedly installed on the top of the transverse support. The four elastic snap-fit ​​plates are divided into two pairs, and the syringe is clamped between each pair of elastic snap-fit ​​plates.

[0013] Furthermore, the top of the transverse support is provided with a slider via a slide rail, and a fastening bolt is provided on one side of the slider via a thread. A push plate is fixedly provided at the top of the slider, and the push plate abuts against the rear end of the syringe. A semi-circular notch is provided at the top of the push plate, and the syringe plunger is located at the semi-circular notch.

[0014] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. By connecting and fixing the needle to the fixing component, when the needle is inserted into the tumor site, if the angle of the needle deviates due to improper operation, it will cause the position of the fixing arm and lever to deviate, thereby causing the light spot projected by the indicator light to disappear. Therefore, by observing the light spot, it is possible to intuitively judge whether the direction and angle of the needle insertion are accurate, and avoid the needle being subjected to lateral force and scratching the tumor site, thus improving accuracy and safety. 2. The extension plate is clamped and fixed between the pressure rod and the pad by pressing the spring. After the needle is inserted into the tumor site, the fixation of the needle is released by pulling the lever. The needle and syringe are connected by the connecting tubing. While injecting fluorescent contrast agent, the interference of the needle caused by the doctor's hand tremor can be avoided, which further improves the safety of the injection device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a rear view structural diagram of the present invention; Figure 3 This is a bottom view of the structure of the present invention; Figure 4 For the present invention Figure 1 Structural diagram of section A; Figure 5 This is a structural diagram of the horizontal support and grip of the present invention; Figure 6 This is a structural diagram of the syringe of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of section B; Figure 8 This is a structural diagram of the fixing component of the present invention; Figure 9 This is a cross-sectional view of the fixed component of the present invention; Figure 10 This is a system diagram of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Horizontal support; 101. Slider; 102. Handle; 103. Lighting lamp; 104. Display screen; 105. Positioning groove; 106. Flexible snap-fit ​​plate; 107. Push plate; 2. Syringe; 3. Controller; 4. Connecting hose; 5. Needle; 501. Extension plate; 502. Insertion hole; 6. Fixing component; 601. Mounting plate; 602. Return spring; 603. Adapter plate; 604. Fixing arm; 605. Slide groove; 606. Moving seat; 607. Pressure rod; 608. Toggle lever; 609. Pad; 610. Indicator light; 611. Ball joint hinge; 612. Pressing spring; 613. Insert; 614. Vertical plate; 615. Limiting block; 616. Indicator hole; 7. Mounting slot; 8. Camera; 9. End tube. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This invention provides, for example Figure 1-10 The illustrated fluorescent contrast agent injection device for intestinal tumor surgery includes a transverse support 1, a syringe 2 at the top of the transverse support 1, the surface of the syringe 2 having a scale for displaying dosage, the fluorescent contrast agent used in gastrointestinal tumor surgery being stored in the syringe 2, a detachable connecting hose 4 at the front end of the syringe 2, an end tube 9 fixedly attached to the front end of the connecting hose 4, and a detachable needle 5 at the front end of the end tube 9. The bottom end of the horizontal support 1 is provided with a handle 102, and the top end of the horizontal support 1 is provided with a positioning groove 105. The bottom end of the syringe 2 is embedded in the positioning groove 105. Two elastic snap-fit ​​plates 106 are provided on both sides of the syringe 2. The elastic snap-fit ​​plates 106 are fixedly installed on the top end of the horizontal support 1. The four elastic snap-fit ​​plates 106 are divided into two pairs, and the syringe 2 is sandwiched between each pair of elastic snap-fit ​​plates 106.

[0020] The top of the transverse support 1 is provided with a slider 101 via a slide rail. A fastening bolt is provided on one side of the slider 101 via a thread. A push plate 107 is fixedly provided at the top of the slider 101. The push plate 107 abuts against the rear end of the syringe 2. A semi-circular notch is provided at the top of the push plate 107. The push rod of the syringe 2 is located at the semi-circular notch.

[0021] When installing syringe 2, syringe 2 is embedded in positioning groove 105, with the front end of syringe 2 abutting against the inner front wall of positioning groove 105. At the same time, the outer end of syringe 2 is engaged with two pairs of elastic locking plates 106. The elastic locking plates 106 are elastic and can apply radial pressure to syringe 2 to clamp and fix syringe 2. At this time, slider 101 is slid forward, driving push plate 107 to abut against the rear end of syringe 2. In this way, push plate 107 applies forward radial pressure to syringe 2 to clamp and fix syringe 2. After fixing, tighten the fastening bolt to fix the position of slider 101 and push plate 107, thereby fixing the position of syringe 2.

[0022] After fixing the syringe 2 to the top of the transverse support 1, the doctor can hold the handle 102 during operation to control the movement of the transverse support 1, thereby making the syringe 2 move synchronously with the transverse support 1. Before the surgery officially begins, the doctor manually manipulates the transverse support 1 to insert the tip of the needle 5 into the tumor site, and then pushes the plunger of the syringe 2 to squeeze the fluorescent contrast agent in the syringe 2 and inject it into the tumor site along the connecting tube 4, the end tube 9 and the needle 5.

[0023] To ensure that needle 5 is inserted into the corresponding area at the correct angle, such as Figure 3 , 5 As shown in Figures 8 and 9, the front end of the horizontal support 1 is provided with an installation groove 7, the installation groove 7 is provided with a fixing component 6, the outer end of the needle 5 is fixed with an extension plate 501, the extension plate 501 is fixed on the fixing component 6, and the extension plate 501 is provided with an insertion hole 502 that penetrates the extension plate 501.

[0024] The fixing component 6 includes a detachable mounting piece 601 disposed on the inner wall of the mounting groove 7. A ball joint hinge 611 and a return spring 602 are fixedly disposed at the front end of the mounting piece 601. The return spring 602 is disposed on the outside of the ball joint hinge 611. The mounting plate 601 has a connecting plate 603 on its front side. The front ends of the ball joint hinge 611 and the return spring 602 are fixedly connected to the connecting plate 603. A fixing arm 604 is fixedly provided on the front side of the connecting plate 603.

[0025] An end tube 9 and a connecting tubing 4 are provided between the needle 5 and the syringe 2 to deliver the fluorescent contrast agent. The needle 5 is connected to the transverse support 1 through a fixing component 6. Therefore, the needle 5 can also move synchronously with the transverse support 1 under control to control the insertion of the needle 5 into the patient's body. During the insertion of the needle 5, the doctor should apply an axial thrust to the needle 5. If the doctor's hand shakes or other improper operation causes the needle 5 to generate an axial force, the needle 5 inserted into the human body will apply a transverse force perpendicular to the insertion direction to the tumor tissue. The tip of the needle 5 is a sharp point, and the transverse force can easily cause the needle 5 to scratch the tumor site and cause bleeding and other dangerous situations. Furthermore, the transverse force can cause the insertion position of the needle 5 to deviate, affecting the injection accuracy. In severe cases, it can even cause the needle 5 to bend or break. The needle 5 is connected and fixed to the fixing component 6 via the extension plate 501. When the needle 5 is subjected to axial force due to improper operation, the fixing arm 604 will also be subjected to axial force. The fixing arm 604 is movably connected to the mounting plate 601 via the ball joint hinge 611. Therefore, the axial force will cause the fixing arm 604 to rotate around the ball joint hinge 611. This rotation will cause the return spring 602 to bend. The bent return spring 602 is elastic and plays a buffering role, which can prevent the needle 5 from bending or breaking due to force.

[0026] The accuracy of the insertion angle needs to be visually demonstrated, such as... Figure 8 , 9 As shown, a pad 609 is fixedly provided on the front side of the fixed arm 604, and the pad 609 is located on the front side of the extension plate 501. A lever 608 is provided below the fixed arm 604. An indicator hole 616 is provided on the lever 608. An indicator light 610 is installed on the front side of the mounting plate 601. The indicator hole 616 is located directly in front of the indicator light 610. The light emitted from the indicator light 610 can pass through the lever 608 through the indicator hole 616.

[0027] When the needle 5 is not subjected to axial force, the return spring 602 can maintain the position and angle of the adapter plate 603 and the fixing arm 604 by its own elasticity. At this time, the light emitted by the indicator light 610 can pass through the indicator hole 616, pass through the lever 608, and illuminate the object in front to form a light spot. Once the needle 5 is subjected to axial force, the return spring 602 bends, the position and angle of the fixing arm 604 will shift, and the position of the lever 608 and the indicator hole 616 below it will also shift. This will cause the light that could originally pass through the indicator hole 616 to be blocked due to the position shift of the lever 608. At this time, the light spot on the object in front disappears. Therefore, during the process of inserting the needle 5, by observing whether there is a light spot in front of the injection device, it is possible to intuitively judge whether the needle 5 is subjected to axial force, thereby making it easier to avoid injury to the tumor site by the lateral force of the needle 5 and the position shift of the insertion, thus improving the safety and accuracy of the needle 5 when inserting into the tumor site.

[0028] To facilitate securing needle 5, such as Figure 6-9 As shown, a sliding groove 605 is provided on the fixed arm 604, and a pressing spring 612 is fixedly provided on the inner wall of the sliding groove 605. An insert 613 is fixedly provided at the front end of the pressing spring 612, and the insert 613 is located inside the sliding groove 605. The fixed arm 604 is fitted with a movable seat 606 at its outer end. The top end of the lever 608 is fixedly connected to the movable seat 606. The insert 613 is fixedly mounted on the inner wall of the movable seat 606. The top end of the movable seat 606 is fixedly mounted with a vertical plate 614. The front end of the vertical plate 614 is fixedly mounted with a pressure rod 607. The front end of the pressure rod 607 is fixedly mounted with a limiting block 615. The limiting block 615 can be embedded in the insertion hole 502. The cross-sections of the limiting block 615 and the insertion hole 502 are both rectangular, and their sizes and shapes are compatible.

[0029] In the initial state, the needle 5 is pre-connected and fixed to the fixing component 6. When the needle 5 is fixed to the fixing component 6, the extension plate 501 is located between the pressure rod 607 and the pad 609. The spring force of the pressing spring 612 pushes the insert 613 and the moving seat 606 forward, thereby driving the upright plate 614 and the pressure rod 607. As a result, the pressure rod 607 clamps the extension plate 501 on the rear side of the pad 609, while the limiting block 615 is aligned with the embedded insertion hole 502 to prevent the extension plate 501 from deflecting and improve the stability of the fixation. After the needle 5 is inserted into the tumor site in the patient's body, the lever 608 is pulled back, causing the lever 608 to move the moving seat 606 and the insert 613 backward along the slide groove 605. The pressing spring 612 is further compressed, and at the same time, the upright plate 614 is moved, causing the pressure rod 607 and the limiting block 615 to move away from the extension plate 501, thereby releasing the fixation of the extension plate 501 and the needle 5. At this time, the connection between the needle 5 and the fixing component 6 is disconnected, and the needle 5 is only connected to the syringe 2 by the end tube 9 and the connecting hose 4. During the subsequent push of the syringe 2 and injection of fluorescent contrast agent, because the connecting hose 4 is soft, even if the doctor's hand vibrates or shakes, it will not affect the needle 5 inserted into the tumor site, avoiding injury to the patient caused by the needle 5, and further improving the safety of injecting fluorescent contrast agent. During the injection, the scale on the syringe 2 is constantly observed to accurately control the amount of fluorescent contrast agent used. After the injection is completed, the needle 5 can be pulled out from the tumor site.

[0030] Precise insertion point is required during injection, such as... Figure 1 , 2 As shown in Figure 10, a controller 3 is fixedly mounted on one side of the horizontal support 1, a camera 8 is mounted on the front side of the pad 609, a display screen 104 is hinged to the other side of the horizontal support 1, a lighting lamp 103 is installed on one side of the horizontal support 1, the camera 8 is located at the input end of the controller 3, and the lighting lamp 103, the display screen 104 and the indicator light 610 are located at the output end of the controller 3.

[0031] During the injection of fluorescent contrast agent, the illumination lamp 103 is turned on. The light emitted by the illumination lamp 103 can illuminate the tumor site in the gastrointestinal tract, making it easier to find the accurate insertion point when inserting the needle 5. At the same time, the camera 8 can be close to the tumor site to take pictures, and the captured images are processed by the controller 3 and displayed on the display screen 104. The display screen 104 is hinged to the horizontal support 1, unfolded when in use, and folded when not in use, which saves more space. The images displayed on the display screen 104 can help doctors observe more clearly and from a clearer perspective when injecting fluorescent contrast agent, thus improving the accuracy of the injection.

[0032] The working principle of this injection device is as follows: First, the syringe 2 containing fluorescent contrast agent is fixed to the top of the horizontal support 1, and the needle 5 is pre-fixed to the fixing component 6. Then, the doctor holds the handle 102 and manually operates it to move the needle 5 and pierce the tumor site in the patient's gastrointestinal tract. During the insertion of the needle 5, observe whether there is a light spot projected by the indicator light 610 in front of the injection device. If there is, it means that the needle 5 is inserted stably and at a precise angle, without causing unnecessary damage to the tumor site. If there is no light spot, it is necessary to adjust the insertion direction and angle of the needle 5 in time. After the needle 5 pierces the tumor site, pull the lever 608 backward to release the fixing component 6 from the needle 5. Then push the plunger of the syringe 2 to inject the fluorescent contrast agent quantitatively into the tumor site. After injection, the needle 5 can be pulled out. In this way, the fluorescent contrast agent can clearly display the outline and shape of the tumor at the tumor site, ensuring that the doctor can accurately remove the tumor.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fluorescent imaging injection device for gastrointestinal tumor surgery, comprising a transverse support (1), wherein a syringe (2) is provided at the top of the transverse support (1), characterized in that: The syringe (2) has a detachable connecting hose (4) at the front end, and an end tube (9) is fixedly provided at the front end of the connecting hose (4). The end tube (9) has a detachable needle (5) at the front end. The horizontal support (1) has an installation groove (7) at its front end. The installation groove (7) has a fixing component (6) inside. The needle (5) has an extension plate (501) fixed at its outer end. The extension plate (501) is fixed on the fixing component (6). The extension plate (501) has an insertion hole (502) that penetrates the extension plate (501). The fixing component (6) includes a mounting piece (601) provided on the inner wall of the mounting groove (7), and a ball joint hinge (611) and a return spring (602) are fixedly provided at the front end of the mounting piece (601). The mounting plate (601) has a connecting plate (603) on its front side, and the front ends of the ball joint hinge (611) and the return spring (602) are fixedly connected to the connecting plate (603).

2. The fluorescent imaging injection device for gastrointestinal tumor surgery according to claim 1, characterized in that: A fixing arm (604) is fixedly provided on the front side of the adapter plate (603), and a pad (609) is fixedly provided on the front side of the fixing arm (604). The pad (609) is located on the front side of the extension plate (501). A lever (608) is provided below the fixed arm (604). An indicator hole (616) is provided on the lever (608) through the lever (608). An indicator light (610) is installed on the front side of the mounting plate (601). The indicator hole (616) is located directly in front of the indicator light (610).

3. The fluorescent imaging injection device for gastrointestinal tumor surgery according to claim 2, characterized in that: The fixed arm (604) is provided with a sliding groove (605), and a pressing spring (612) is fixedly provided on the inner wall of the sliding groove (605). An insert (613) is fixedly provided at the front end of the pressing spring (612). The fixed arm (604) is fitted with a movable seat (606) at its outer end. The top end of the lever (608) is fixedly connected to the movable seat (606). The insert (613) is fixedly mounted on the inner wall of the movable seat (606). The top end of the movable seat (606) is fixedly mounted with a vertical plate (614). The front end of the vertical plate (614) is fixedly mounted with a pressure rod (607). The front end of the pressure rod (607) is fixedly mounted with a limiting block (615). The limiting block (615) can be embedded in the insertion hole (502).

4. The fluorescent imaging injection device for gastrointestinal tumor surgery according to claim 1, characterized in that: A controller (3) is fixedly installed on one side of the horizontal support (1), a camera (8) is installed on the front side of the pad (609), a display screen (104) is hinged on the other side of the horizontal support (1), and a lighting lamp (103) is installed on one side of the horizontal support (1).

5. The fluorescent imaging injection device for gastrointestinal tumor surgery according to claim 1, characterized in that: The bottom end of the horizontal support (1) is provided with a handle (102), and the top end of the horizontal support (1) is provided with a positioning groove (105). The bottom end of the syringe (2) is embedded in the positioning groove (105). Two elastic snap-fit ​​plates (106) are provided on both sides of the syringe (2). The elastic snap-fit ​​plates (106) are fixedly installed on the top end of the horizontal support (1).

6. The fluorescent imaging injection device for gastrointestinal tumor surgery according to claim 5, characterized in that: The top of the transverse support (1) is provided with a slider (101) via a slide rail. A fastening bolt is provided on one side of the slider (101) via a thread. A push plate (107) is fixedly provided at the top of the slider (101), and the push plate (107) abuts against the rear end of the syringe (2).

Images