Indocyanine green precise puncture and injection device under laparoscope

Abstract

The utility model discloses an indocyanine green precise puncture and injection device under a laparoscope, which belongs to the field of medical instruments and comprises a needle tube outer cylinder, a middle propelling device arranged in the needle tube outer cylinder, an internal propelling device arranged in the middle propelling device, a negative pressure drainage piece arranged at the head of the needle tube outer cylinder, and a negative pressure drainage piece arranged at the tail of the needle tube outer cylinder. An outer hose is arranged at the other end of the negative pressure drainage piece, a suction cup head is arranged at the other end of the outer hose, an inner hose is arranged at the head of the middle propelling device, the inner hose penetrates through the negative pressure drainage piece and then extends into the outer hose, an injection needle is arranged at the head of the inner hose, and an electrocoagulation wire is arranged in the suction cup head and connected with the injection needle. According to the utility model, an operator can accurately complete puncture and injection operations under a laparoscope; the problem that when indocyanine green is injected, a needle is withdrawn and after the needle is withdrawn, the medicament overflows to pollute the tissue surface is solved; electric coagulation hemostasis can be implemented in the whole operation process; and the medicine injection dosage can be controlled more accurately.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a laparoscopic indocyanine green precise puncture and injection device. BACKGROUND

[0002] As a new surgical navigation technology, indocyanine green (ICG) near-infrared imaging technology has been applied in gastrointestinal surgery, hepatobiliary and pancreatic surgery, urology and gynecology in laparoscopic surgery. Its intraoperative navigation purposes include tumor visualization positioning, lymph node visualization and cleaning, visual organ resection, anastomotic stoma blood supply evaluation, etc. Indocyanine green, as a developer, has three injection methods, namely peripheral or central intravenous injection, preoperative endoscopic local injection of gastrointestinal tract and intraoperative local injection. Among them, intraoperative local injection of indocyanine green is the most important injection method, including intravascular injection and tissue injection during operation. Intravascular injection is mainly used for portal vein injection in liver surgery, and tissue injection is mainly used for subserosal injection of gastrointestinal tract and tissue injection of solid organs such as pancreas.

[0003] At present, there is no special laparoscopic indocyanine green injection device for clinical application, so when intravascular injection is performed during operation, a general extracorporeal puncture needle is generally used to puncture into the portal vein under the guidance of intraoperative B-ultrasound after penetrating the abdominal wall through a stab card or directly penetrating the abdominal wall, and then an ordinary syringe is used to inject indocyanine green through the puncture needle port outside the abdominal cavity. For tissue injection, the above method can be used, or a scalp needle with a transfusion tube and an injection port can be placed into the abdominal cavity through a stab card, and the transfusion tube and the injection port are outside the abdominal cavity. The scalp needle is punctured into the tissue under the clamping of the laparoscopic instrument, and then an ordinary syringe is used to inject indocyanine green through the injection port outside the abdominal cavity.

[0004] The above puncture and injection methods of indocyanine green have the following problems:

[0005] 1. Without a special injection device, the puncture operation is not only time-consuming and laborious, but also the tissue in the abdominal cavity generally lacks the tension of "tightness" or "firmness", which can cause the local tissue to be "pressed" and depressed before the needle breaks through, and the actual puncture depth is greater than the expected one after the needle breaks through, resulting in a decrease in puncture accuracy.

[0006] 2. After successful puncture, the drug is easy to spill from the needle tract and contaminate the surface of the tissue during the injection process, when the needle is pulled out, and after the needle is pulled out, it is difficult to clean in time, which can cause false images during development.

[0007] 3. It is difficult to stop bleeding in time during the puncture process, during the drug injection process, when the needle is pulled out, and after the needle is pulled out.

[0008] 4. The common syringe cannot accurately control the injection dose of the medicine. Most of the micro-control methods of the existing micro-syringes adopt gear differential method or screw rotation method in the mechanical field. Although this method can accurately control the injection dose of the medicine, the assembly is relatively complex and the volume is large, and it is inconvenient to use in laparoscopic surgery. Utility model content

[0009] The utility model discloses an indocyanine green accurate puncture and injection device under laparoscope, and the operator can accurately complete puncture and injection operation under laparoscope, solves the problem that medicine spills and pollutes the surface of tissue when injecting indocyanine green, pulling out the needle and after pulling out the needle, can implement electrocoagulation hemostasis in the whole operation process, and can more accurately control the injection dose of the medicine.

[0010] To solve the above technical problems, the utility model adopts the following technical scheme:

[0011] The utility model discloses an indocyanine green accurate puncture and injection device under laparoscope, which comprises a needle tube outer cylinder, a middle pushing device is arranged in the inside of the needle tube outer cylinder, an inside pushing device is arranged in the inside of the middle pushing device, a negative pressure drainage part is arranged at the head of the needle tube outer cylinder, an outer hose is arranged at the other end of the negative pressure drainage part, a sucking disc head is arranged at the other end of the outer hose, an inner hose is arranged at the head of the middle pushing device, the inner hose extends to the inside of the outer hose after penetrating through the negative pressure drainage part, an injection needle is arranged at the head of the inner hose, an electrocoagulation wire is arranged in the inside of the sucking disc head, and the electrocoagulation wire is connected with the injection needle.

[0012] Further, a first operation part is arranged at the tail end of the needle tube outer cylinder.

[0013] Still further, a sealing ring is arranged at the connecting position of the needle tube outer cylinder and the negative pressure drainage part.

[0014] Still further, the needle tube outer cylinder, the middle pushing device and the inside pushing device are coaxially arranged.

[0015] Still further, an axial channel and a branch channel are arranged in the inside of the negative pressure drainage part, the branch channel is communicated with the axial channel, the inner hose penetrates through the axial channel, and a medicine recovery hose is connected to the end of the branch channel.

[0016] Still further, an electrocoagulation control button and a negative pressure control button are arranged at one side of the negative pressure drainage part.

[0017] Further, the tail end of the middle propelling device is provided with a second operating part, the axis of the middle propelling device is provided with a medicine storage area, the inner hose is connected with the head of the medicine storage area, and the inner propelling device is inserted into the medicine storage area from the tail end of the medicine storage area.

[0018] Further, the outer side of the suction cup head is provided with a protective cap.

[0019] Compared with the prior art, the utility model has the beneficial technical effects that:

[0020] The utility model discloses novel concept, and the design is ingenious, and the two -section propelling structure is designed in needle tube outer cylinder, and the structure stability is more reasonable, more compact, one end of outer hose is connected with negative pressure drainage spare, and the other end of outer hose is connected with suction cup head, and the horn mouth surface of suction cup head is in the injection area of dirty organ outer surface, and the dirty organ outer surface will be closely attached on the horn mouth of suction cup head, and slightly non -injury rises in the middle portion because of negative pressure, guarantee that the tissue is compact when being stabbed, and it is beneficial to puncture, and effectively control the tissue stabbing amount, and the built -in electrocoagulation wire of suction cup head is electrified before needle tip exposes, and the small piece of tissue of electrocoagulation needle head area is electrocoagulation, and the needle head is extracted completely simultaneously, and the puncture part will be blocked up needle hole because of electrocoagulation, and the problem of the overflow of injected medicament after needle extraction is solved, and the medicament leakage is prevented, and the suction cup head can suck the liquid medicine that flows out at needle head when separating, and the liquid medicine that the suction cup head sucks enters the gap between outer hose and inner hose, and returns to the branch passage of negative pressure drainage spare, and the liquid medicine is transported to syringe outside through medicament recovery hose, and the medicament that leaks or flows out because of the operation error that can not be avoided is removed in time. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further explained in connection with the drawings.

[0022] Figure 1 It is the three -dimensional structure schematic diagram of the utility model laparoscopic indocyanine green precision puncture and injection device;

[0023] Figure 2 It is the sectional view of the utility model laparoscopic indocyanine green precision puncture and injection device;

[0024] Figure 3 It is Figure 2 The enlarged view of the middle A;

[0025] Figure 4 It is Figure 2 The enlarged view of the middle B;

[0026] Figure 5 It is the three -dimensional structure schematic diagram of the utility model laparoscopic indocyanine green precision puncture and injection device after installing protective cap;

[0027] Figure 6 It is the partial sectional view of the utility model laparoscope indocyanine green precision puncture and injection device installation protection cap after.

[0028] The drawing mark explanation: 1, needle tube outer tube; 101, first operating part; 2, negative pressure drainage piece; 201, electrocoagulation button installation position; 202, negative pressure button installation position; 203, electrocoagulation control button; 204, negative pressure control button; 205, low voltage electric wire; 206, shaft center passage; 207, branch passage; 3, middle advancing device; 301, second operating part; 302, medicament storage area; 4, internal advancing device; 5, outer hose; 6, inner hose; 7, injection needle; 8, sucking disc head; 9, electrocoagulation wire; 98, small sealing plug; 99, enameled copper wire; 10, sealing ring; 11, protection cap. Specific implementation

[0029] As Figures 1-6 Indocyanine green precision puncture and injection device under laparoscope, including needle tube outer tube 1, needle tube outer tube 1 provides the structural support of entire injector, the tail end of the needle tube outer tube 1 is connected with the first operating part 101, the first operating part 101 is a pair of wing type force point, for operation, the inside of the needle tube outer tube 1 is covered with the middle advancing device 3 and the internal advancing device 4 coaxial with the needle tube outer tube 1, the internal advancing device 4 and the middle advancing device 3 are nested, the middle advancing device 3 is used to control the feed quantity of injection needle, the internal advancing device 4 is used to control the injection quantity of medicament, the head of the needle tube outer tube 1 is docked with the negative pressure drainage piece 2, the needle tube outer tube 1 and the negative pressure drainage piece 2 are interference docked, the other end of the negative pressure drainage piece 2 is inserted with the outer hose 5, the other end of the outer hose 5 is connected with the sucking disc head 8, the head of the middle advancing device 3 is connected with the inner hose 6, the inner hose 6 is smaller than the outer hose 5 in diameter, the inner hose 6 extends to the inside of the outer hose 5 after penetrating the negative pressure drainage piece 2, the head of the inner hose 6 is connected with the injection needle 7, the needle tip does not exceed the sucking disc head 8 when the injection needle 7 is in the initial position, the inside of the sucking disc head 8 is provided with the electrocoagulation wire 9, the electrocoagulation wire 9 is connected with the injection needle 7, for electrocoagulating organ tissue.

[0030] As Figure 4 The butt joint surface of the needle tube outer tube 1 and the negative pressure drainage piece 2 is installed with the sealing ring 10, the sealing ring 10 adopts rubber ring, and the sealing property is guaranteed by installing the sealing ring 10.

[0031] As Figure 4As shown, the inside of the negative pressure drainage device 2 is provided with an axial channel 206 and a branch channel 207, the branch channel 207 is communicated with the axial channel 206, the diameter of the inner hose 6 is smaller than the inner diameter of the axial channel 206, the inner hose 6 passes through the axial channel 206, the end of the branch channel 207 is connected with a medicament recovery hose, and the medicament is recovered through the negative pressure effect by using the medicament recovery hose; one side of the negative pressure drainage device 2 is provided with an electrocoagulation button mounting position 201 and a negative pressure button mounting position 202, the electrocoagulation button mounting position 201 is placed with an electrocoagulation control button 203, and the negative pressure button mounting position 202 is placed with a negative pressure control button 204; each time the electrocoagulation control button 203 is pressed, an electric signal is sent, and the low-voltage wire 205 at the tail end of the button is transmitted to the interface (not shown in the figure) of the rear control platform, so that the electrocoagulation start-stop and the negative pressure switch are controlled; when electrocoagulation is needed, the electrocoagulation control button 203 is pressed once, the injection needle passes through the electrocoagulation wire 9 to flow high-frequency current to electrocoagulate the corresponding organ tissue, and the electrocoagulation control button 203 is pressed again to close the high-frequency current; when negative pressure absorption is needed, the negative pressure control button 204 is pressed once, the negative pressure machine at the other end of the medicament recovery hose connected to the end of the branch channel 207 works to generate negative pressure, the leaked medicament in the cavity is sucked out of the body through the suction cup head 8, and the negative pressure control button 204 is pressed again to stop the negative pressure generation. In actual work, in order to avoid the disorder of the wire, the low-voltage wire 205 and the enameled copper wire 99 introduced from the small sealing plug 98 are inserted into the insulating wire tube together (not marked in the figure), and the other end of the wire tube is connected with the corresponding interface of the related instrument respectively.

[0032] As shown in the figure, Figure 2 As shown, the tail end of the middle advancing device 3 is connected with a second operation part 301, the second operation part 301 is a pair of wing-shaped force points, and is used for operation; the axial center of the middle advancing device 3 is provided with a medicament storage area 302, the medicament storage area 302 is a cylindrical hollow area, and is used for storing medicament; under the movement of the inner advancing device 4, positive pressure or negative pressure is generated, and then the medicament is extruded or sucked; the inner hose 6 is connected with the head of the medicament storage area 302, and the inner advancing device 4 is inserted into the medicament storage area 302 from the tail end of the medicament storage area 302.

[0033] The outer wall of the needle tube outer cylinder 1 is provided with scales, and in addition, the outer wall of the middle advancing device 3 is also provided with scales, the scales on the outer wall of the middle advancing device 3 are the scales of the medicament dose of the inner advancing device 4.

[0034] As shown in the figure, Figure 5 , 6 As shown in the figure,

[0035] The working process of the microinjector is introduced by taking the example of injecting indocyanine green into pancreas under laparoscope:

[0036] In the operation, firstly, the puncture site and depth are determined, and the injection drug dosage is determined. The operator can hold the device with one hand, and the device is placed into the abdominal cavity through the trocar, and the protective cap 11 is manually removed.

[0037] Firstly, the injection needle 7 is adjusted to the appropriate position (the needle tip still does not exceed the suction cup head) through the middle advancing device 3, and then the internal advancing device 4 is adjusted to suck the drug;

[0038] Then, the suction cup head 8 is passed through the trocar, and the injection area is searched under the assistance of the laparoscope, after the injection area is determined, the horn mouth surface of the suction cup head 8 is attached to the injection area on the outer surface of the organ, the negative pressure control button 204 is pressed, the negative pressure is started, the outer surface of the organ is closely attached to the horn mouth of the suction cup head 8, and slightly non-injury bulges are generated in the middle due to the negative pressure, so that the injection surface is compacted;

[0039] Subsequently, after the injection dosage and time are confirmed, the middle advancing device 3 is pushed, the inner hose 6 is driven to push the injection needle 7 to advance, the outer surface of the organ is pierced, and after reaching the specified area, the internal advancing device 4 is pushed to inject the drug, after the injection is completed, the internal advancing device 4 is pulled out, the length unit scale on the outer wall of the needle tube outer cylinder 1 is observed, the electric coagulation control button 203 is pressed before the needle tip is exposed, the injection needle is powered through the electric coagulation wire 9 to coagulate a small piece of tissue in the suction area of the head of the injection needle 7, and the needle head is completely extracted synchronously, at this time, the puncture site is blocked by the electric coagulation to prevent the injected liquid from being squeezed out due to the positive pressure;

[0040] Finally, the negative pressure control button 204 is pressed, the gear is adjusted to a low gear, the suction cup head 8 is separated from the organ tissue, at this time, part of the liquid may flow out from the needle head, the suction cup head 8 can be sucked in sequence when being separated, the liquid sucked by the suction cup head 8 enters the gap between the outer hose 5 and the inner hose 6, flows into the branch channel 207 of the negative pressure drainage member 2, and is transported to the outside of the injector through the drug recovery hose, after the suction is completed, the negative pressure control button 204 is pressed again, the negative pressure is stopped, and the suction cup head 8 is pulled out of the abdominal cavity. From this, the injection of indocyanine green into the pancreatic tissue is completed.

[0041] The injection device is not only suitable for the injection of indocyanine green, but also can be suitable for other similar conditions.

[0042] The above-described embodiments only describe the preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical solutions of the utility model made by the ordinary skilled in the art without departing from the design spirit of the utility model should fall within the protection scope determined by the claims of the utility model.

Claims

1. A device for precise puncture and injection of indocyanine green under laparoscopy, characterized in that: The utility model provides a kind of needle tube outer cylinder (1), the inside of the needle tube outer cylinder (1) is provided with middle part propelling device (3), the inside of the middle part propelling device (3) is provided with internal propelling device (4), the head of the needle tube outer cylinder (1) is provided with negative pressure drainage piece (2), the other end of the negative pressure drainage piece (2) is provided with outer hose (5), the other end of the outer hose (5) is provided with suction cup head (8), the head of the middle part propelling device (3) is provided with inner hose (6), the inner hose (6) extends to the inside of the outer hose (5) after being passed through the negative pressure drainage piece (2), the head of the inner hose (6) is provided with injection needle (7), the inside of the suction cup head (8) is provided with electrocoagulation wire (9), and the electrocoagulation wire (9) is connected with the injection needle (7). ​ 2. The device according to claim 1, wherein the device is a laparoscopic indocyanine green precise puncture and injection device. The tail end of the needle tube outer cylinder (1) is provided with a first operating part (101). 3.The device according to claim 1, wherein: The connection part of the needle tube outer cylinder (1) and the negative pressure drainage piece (2) is provided with a sealing ring (10).

4. The device according to claim 1, wherein the device is characterized in that: The needle tube outer cylinder (1), the middle part propelling device (3) and the internal propelling device (4) are coaxially arranged.

5. The device for precise injection of indocyanine green under laparoscopy according to claim 1, characterized in that: The inside of the negative pressure drainage piece (2) is provided with an axial channel (206) and a branch channel (207), the branch channel (207) is communicated with the axial channel (206), the inner hose (6) is passed through the axial channel (206), and the end of the branch channel (207) is connected with a medicine recovery hose. 6.The device according to claim 5, wherein: One side of the negative pressure drainage piece (2) is provided with an electrocoagulation control button (203) and a negative pressure control button (204). 7.The device according to claim 1, wherein: The tail end of the middle part propelling device (3) is provided with a second operating part (301), the axial center of the middle part propelling device (3) is provided with a medicine storage area (302), the head of the medicine storage area (302) is connected with the inner hose (6), and the internal propelling device (4) is inserted into the medicine storage area (302) from the tail end of the medicine storage area (302). 8.The device according to claim 1, wherein: The outer side of the suction cup head (8) is provided with a protective cap (11).

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