Casing device for electrohydraulic lithotripsy and lithotripsy

Abstract

The sleeve device comprises a sleeve body, a puncture tube and a positioning occlusion mechanism, a balloon is arranged at the front end of the sleeve body, and a first cavity hole, a second cavity hole, a third cavity hole and a fourth cavity hole which are independent from one another are formed in the extension direction of the sleeve body; a cavity is formed in the middle of the puncture tube and movably connected into the fourth cavity hole, a conical puncture head is arranged at the front section end of the puncture tube, and a connector lug and a suction port are arranged at the tail of the puncture tube; the positioning occlusion mechanism comprises a chassis, the chassis is slidably connected to the sleeve body in a sleeving mode, a hinge column is arranged on the chassis, an occlusion rod is hinged to the hinge column, an occlusion part is arranged at the head of the occlusion rod, a hinge part is arranged in the middle of the occlusion rod, and a pressing part is arranged at the bottom of the occlusion rod; and an elastic piece for providing an occlusal force is arranged between the occlusal rod and the hinge column. The utility model provides a trocar for electrohydraulic lithotripsy and calculus removal, which can completely suck bile flowing out of a gall bladder incision during gall bladder calculus treatment and prevent irritant bile from polluting an operation area.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a casing device for hydraulic-electric lithotripsy. Background Art

[0002] Electrohydraulic lithotripsy utilizes high-voltage oscillation waves generated by high-voltage electricity to break up stones. Specifically, electricity is passed between two electrodes to form high voltage. When the voltage difference between the two electrodes exceeds the maximum resistance of the insulating layer, sparks are generated between the electrodes to form a plasma shock wave. The shock wave of a certain electric power vibrates in the water, releasing the gas dissolved in the water to form tiny bubbles. The gas in the bubbles then expands and collapses in a very short time during the shock wave movement to form liquid shock wave lithotripsy. Compared with laser lithotripsy, its energy level is small and will not cause secondary damage to human tissues. Therefore, electrohydraulic lithotripsy is widely used in stone treatment. For the treatment of gallbladder stones, it is used Before inserting the electrohydraulic lithotripsy electrode, the gallbladder must first be cut open with an electric knife or an ultrasonic knife, and then a laparoscopic suction device is used to suck out the bile flowing out of the gallbladder incision. However, due to the high tension and pressure of the gallbladder, the bile in the gallbladder will flow out through the incision of the electric knife or ultrasonic knife. Existing surgical instruments often cannot quickly and completely suck out the bile flowing out of the gallbladder incision, causing the irritating bile to contaminate the surgical area and even enter the patient's pelvic cavity. Even after the patient's bile is flushed, due to the irritating characteristics of the bile, the bile remaining in the intestinal space after the operation will still cause bile irritation peritonitis to the patient, and even postoperative complications such as fever. Summary of the invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a cannula for electrohydraulic lithotripsy, which can cleanly absorb the bile flowing out of the gallbladder incision during the treatment of gallstones to prevent the irritating bile from contaminating the surgical area.

[0004] The utility model is realized through the following technical solutions:

[0005] A cannula device for hydraulic and electric lithotripsy comprises a cannula body, a puncture tube and a positioning and engaging mechanism, a balloon is arranged at the front end of the cannula body, and a mutually independent first cavity hole, a second cavity hole, a third cavity hole and a fourth cavity hole are arranged along the extension direction, the first cavity hole is communicated with an air outlet arranged on the side of the front end of the cannula body, and the air outlet is communicated with the inner cavity of the balloon; the second cavity hole is communicated with a liquid outlet arranged on the side of the front end of the cannula body; the third cavity hole is communicated with a liquid suction port arranged at the front end of the cannula body; a cavity is arranged in the extension direction of the middle part of the puncture tube, and is movably connected in the fourth cavity hole, and a cone is arranged at the front end of the puncture tube The conical puncture head has a terminal head and a suction port at its tail; a through hole communicating with the cavity is provided on the conical puncture head, the terminal head is connected to the conical puncture head through a wire, and the suction port is communicated with the cavity; the positioning and biting mechanism includes a chassis, the chassis is slidably sleeved on the sleeve body through a guide hole provided in the middle, and a hinge column is provided on the chassis, a bite rod is hinged on the hinge column, a bite portion is provided at the head of the bite rod, a hinge portion is provided in the middle, and a pressing portion is provided at the bottom; an elastic member for providing a bite force is provided between the bite rod and the hinge column; in this technical solution, the conical puncture head is connected to the electric wire through the terminal head. The first cavity is connected to an external compressed air pipeline or a medical syringe, the second cavity is connected to a saline supply pipeline, and the third cavity is connected to a saline suction pipeline. During the operation, a smaller puncture hole is opened at the bottom of the gallbladder through a conical puncture head, and the bleeding is stopped while the hole is opened by electrocoagulation, which can reduce the risk of bleeding. After the conical puncture head pierces the gallbladder, the bile in the gallbladder can be sucked out through the through hole provided on the conical puncture head, and then the airbag placed in the gallbladder is inflated and the sleeve body is pulled back outward, so that the expanded airbag can get stuck to the adhesion on the inner wall of the gallbladder. The fourth cavity is placed on the membrane, and the chassis is slid forward at this time to fix the cannula body between the patient's abdominal wall and the internal mucosa of the gallbladder. After the puncture tube is pulled out of the fourth cavity, the liquid-electric lithotripsy electrode can be put into the fourth cavity to crush the stones in the gallbladder, and the circulating normal saline can remove smaller stones during the process of electrode lithotripsy. After the lithotripsy is completed, there is only a smaller hole on the gallbladder wall. It is safe and convenient to suture or ligate the hole in the gallbladder wall. Compared with patients with traditional larger incisions on the gallbladder wall, this surgical instrument is easy, fast and flexible to use, which can effectively save operation time, reduce patients' gallbladder trauma and postoperative risks, and improve operation safety.

[0006] Preferably, there are two hinged columns, which are symmetrically arranged on the chassis; the pressing direction of the bite rod pressing part is horizontally arranged; in this technical solution, the pressing direction of the bite rod pressing part is horizontally arranged, which conforms to ergonomics and can facilitate single-handed operation by surgical personnel.

[0007] Preferably, a positioning flange is provided on the outer wall of the tail end of the puncture tube, and a threaded portion is provided on the outer wall of the upper end of the sleeve body. The positioning flange is fixed to the sleeve body by a locking cap provided on the threaded portion. In the present technical solution, the positioning flange and the locking cap can fix the puncture tube to the sleeve body, preventing the puncture tube from moving on the sleeve body due to the lack of a fulcrum when the surgeon holds the sleeve body for puncture, thereby affecting the accuracy and efficiency of the surgical operation.

[0008] Preferably, the bite portion has an arc-shaped structure, and a non-slip rubber layer is provided on the contact surface between the bite portion and the sleeve body; in the present technical solution, the arc-shaped structure of the bite portion can increase the area of ​​the contact surface, increase the friction between the bite portion and the sleeve body, and prevent the chassis from sliding on the sleeve body. The non-slip rubber layer can increase the tightness of the contact between the bite portion and the surface of the sleeve body, and further increase the friction between the bite portion and the sleeve body.

[0009] Preferably, the bottom receiving groove of the fourth cavity hole is provided with an anti-backflow plug in the receiving groove, and a flexible sealing ring is provided on the middle through hole of the anti-backflow plug; the inner edge of the flexible sealing ring extends downward to the center line of the channel; in the present technical solution, the anti-backflow plug can prevent the liquid in the gallbladder from flowing back out of the fourth cavity hole during surgery and contaminating the surgical area; the receiving groove can provide a deformation and movement space for the flexible sealing ring of the anti-backflow plug to prevent it from hindering the movement of the puncture tube.

[0010] Preferably, a silicone gasket is provided at the lower end of the chassis; in the present technical solution, the silicone gasket enables the chassis to be in flexible contact with the patient's abdominal wall, thereby preventing the chassis from damaging the abdominal wall.

[0011] Preferably, the hinged part is fixed to the hinged column via a pin; the elastic member is a torsion spring, and the torsion spring is sleeved on the pin; in the present technical solution, the hinged part is fixed to the hinged column via a pin, and its connection structure is simple and easy to assemble.

[0012] Preferably, the outer wall of the lower end of the sleeve body is in a conical structure; in the present technical solution, the conical structure can reduce the difficulty of operation and facilitate the sleeve body to enter the gallbladder.

[0013] Compared with the prior art, the utility model has the following beneficial effects: 1. The cannula device for removing the liquid-electric lithotripsy comprises a cannula body and a puncture tube. The puncture tube can absorb the bile flowing out of the gallbladder incision during the treatment of gallstones to prevent the irritating bile from contaminating the surgical area; 2. The cannula device for removing the liquid-electric lithotripsy comprises a positioning and biting mechanism. The positioning and biting mechanism cooperates with the air bag to fix the cannula body between the patient's abdominal wall and the internal mucosa of the gallbladder, which is convenient for the later lithotripsy operation, and the pressing direction of the pressing part of the positioning and biting mechanism is arranged horizontally, which conforms to human engineering and is convenient for the surgeon to operate with one hand; 3. The bottom of the cannula body is provided with an anti-backflow plug. The anti-backflow plug can prevent the liquid in the gallbladder from flowing back from the fourth cavity during the operation and contaminating the surgical area; 4. The cannula body is provided with a liquid outlet and a liquid suction port, which can form a circulating water flow in the gallbladder to timely remove the smaller fragments generated during the electrode lithotripsy process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a casing device for hydraulic-electric lithotripsy described in Example 1;

[0015] Figure 2 It is a structural schematic diagram of the sleeve body described in Example 1;

[0016] Figure 3 This is a schematic diagram of the structure of the puncture tube in Example 1;

[0017] Figure 4 It is a front view structural schematic diagram of the positioning and engaging mechanism described in the first embodiment;

[0018] Figure 5 It is a schematic diagram of the top view of the positioning and engaging mechanism described in the first embodiment;

[0019] In the figure: 1. sleeve body; 11. balloon; 12. first cavity hole; 13. second cavity hole; 14. third cavity hole; 15. fourth cavity hole; 151. receiving groove; 16. air outlet; 17. liquid outlet; 18. liquid suction port; 19. threaded portion; 2. puncture tube; 21. cavity; 22. conical puncture head; 221. through hole; 23. terminal head; 231. wire; 24. suction port; 25. positioning flange; 3. positioning bite mechanism; 31. chassis; 32. hinged column; 33. bite rod; 331. bite part; 3311. anti-slip rubber layer; 332. hinged part; 333. pressing part; 34. elastic member; 35. silicone gasket; 4. anti-backflow plug; 41. flexible sealing ring; 5. locking cap. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] like Figures 1 to 5As shown, a cannula device for hydraulic and electric lithotripsy comprises a cannula body 1, a puncture tube 2 and a positioning and engaging mechanism 3. A balloon 11 is provided at the front end of the cannula body 1, and a first cavity 12, a second cavity 13, a third cavity 14 and a fourth cavity 15 are provided along the extension direction, which are independent of each other. A connector which is respectively connected to the first cavity 12, the second cavity 13 and the third cavity 14 is provided at the tail end of the cannula body 1, and the fourth cavity 15 penetrates the cannula body 1 along the axial direction; the first cavity 12 is communicated with an air outlet 16 provided on the side of the front end of the cannula body, and the air outlet 16 is connected to the cannula body 1; The inner cavity of the balloon 11 is connected; the second cavity hole 13 is connected to the liquid outlet 17 provided on the side of the front end of the sleeve body; the third cavity hole 14 is connected to the liquid suction port 18 provided at the front end of the sleeve body; a cavity 21 is provided in the extension direction of the middle part of the puncture tube 2, and the outer diameter of the puncture tube 2 is matched with the aperture of the fourth cavity hole, and it is movably connected in the fourth cavity hole 15, and the front end of the puncture tube 2 is provided with a conical puncture head 22, and the tail is provided with a terminal head 23 and a suction port 24; the conical puncture head 22 is provided with a through hole 221 connected to the cavity 21, and the terminal head 23 is connected to the conical puncture head 22 is connected by a wire 231, and the suction port 24 is connected to the cavity 21; the positioning bite mechanism 3 includes a chassis 31, and the chassis 31 is slidably sleeved on the sleeve body 1 through a guide hole provided in the middle, and a hinge column 32 is provided on the chassis 31, and a bite rod 33 is hinged on the hinge column 32, and the bite rod 33 is provided with a bite part 331 at the head, a hinge part 332 in the middle, and a pressing part 333 at the bottom; an elastic member 34 for providing a bite force is provided between the bite rod 33 and the hinge column 32, and specifically, the hinge part is fixed to On the hinged column; the elastic member 34 is a torsion spring, which is sleeved on the pin shaft; when in use, the conical puncture head 22 is made of metal, connected to the electrocoagulation device through the terminal 23, the suction port 24 is connected to the bile suction pipeline, the first cavity hole 12 is connected to the external compressed air pipeline or the medical syringe, the second cavity hole 13 is connected to the physiological saline supply pipeline, and the third cavity hole 14 is connected to the physiological saline suction pipeline; during surgery, a smaller puncture hole is opened at the bottom of the gallbladder through the conical puncture head 22, and the bleeding is stopped while the hole is opened by electrocoagulation, which can reduce the risk of bleeding;After the conical puncture head 22 pierces the gallbladder, the bile in the gallbladder can be sucked out through the through hole 221 provided on the conical puncture head 22, and then the balloon 11 placed in the gallbladder is inflated and pulled back to the sleeve body 1, and the inflated balloon 11 can be stuck on the inner wall mucosa of the gallbladder. At this time, the chassis 31 is slid forward to fix the sleeve body 1 between the patient's abdominal wall and the inner mucosa of the gallbladder. After the puncture tube 2 is removed from the fourth cavity 15, the liquid-electric lithotripsy electrode can be placed through the fourth cavity 15 to perform lithotripsy on the gallbladder stones, and the liquid outlet provided on the side of the sleeve body 1 17 can timely replenish clean saline into the gallbladder, improve the efficiency of the electrohydraulic lithotripsy operation, and the suction port 18 set at the front end of the sleeve body 1 can draw saline from the place where the electrode lithotripsy occurs in the gallbladder at a close distance, and remove the smaller stones produced during the electrode lithotripsy. After the lithotripsy is completed, there is only a small hole on the gallbladder wall. Suturing or ligating the hole in the gallbladder wall is safe and convenient. Compared with patients with larger incisions on the gallbladder wall in traditional methods, this surgical instrument is easy to use, fast and flexible, effectively saving operation time, reducing gallbladder trauma and postoperative risks of patients, and improving surgical safety. ;

[0023] Preferably, there are two hinged columns 32, and the two hinged columns 32 are symmetrically arranged on the chassis; the pressing direction of the pressing part 333 of the bite rod 33 is arranged horizontally to comply with ergonomics and facilitate single-handed operation by the surgeon; a positioning flange 25 is provided on the outer wall of the tail of the puncture tube 2, and a threaded portion 19 is provided on the outer wall of the upper end of the sleeve body 1. The positioning flange 25 is fixed to the sleeve body 1 through a locking cap 5 provided on the threaded portion 19 to prevent the surgeon from moving in the sleeve body 1 due to the lack of a fulcrum during the perforation of the sleeve body 1 by holding the sleeve body 1, thereby affecting the accuracy and efficiency of the surgical operation; the bite portion 331 is in an arc-shaped structure to increase the contact area with the sleeve body 1, increase the friction between the bite portion 331 and the sleeve body 1, and prevent the chassis 31 from sliding on the sleeve body 1; further, an anti-slip rubber layer 3311 is provided on the contact surface between the bite portion 331 and the sleeve body 1 to increase The tightness of the contact between the bite portion 331 and the surface of the sleeve body 1 further improves the friction between the bite portion and the sleeve body; the bottom receiving groove 151 of the fourth cavity 15, the receiving groove 151 is provided with an anti-backflow plug 4, the anti-backflow plug 4 is made of flexible silicone, and a flexible sealing ring 41 is provided on the middle through hole of the anti-backflow plug 4; the inner edge of the flexible sealing ring 41 extends downward to the center line of the channel, and the anti-backflow plug 4 can prevent the liquid in the gallbladder from flowing back from the fourth cavity 15 during the operation and polluting the operation area; the receiving groove 151 can provide a deformation and movement space for the flexible sealing ring 41 of the anti-backflow plug to prevent it from hindering the movement of the puncture tube; the lower end of the chassis 31 is provided with a silicone gasket 35, and the silicone gasket 35 can make the chassis 31 flexibly contact with the patient's abdominal wall to prevent the chassis 31 from damaging the abdominal wall; in order to facilitate the sleeve body to enter the gallbladder, the outer wall of the lower end of the sleeve body 1 is a conical structure.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A casing device for hydraulic and electric lithotripsy, characterized in that: The invention comprises a sleeve body, a puncture tube and a positioning and engaging mechanism. A balloon is arranged at the front end of the sleeve body, and a first cavity, a second cavity, a third cavity and a fourth cavity are arranged independently of each other along the extension direction. The first cavity is communicated with an air outlet arranged on the side of the front end of the sleeve body, and the air outlet is communicated with the inner cavity of the balloon; the second cavity is communicated with a liquid outlet arranged on the side of the front end of the sleeve body; the third cavity is communicated with a liquid suction port arranged at the front end of the sleeve body; a cavity is arranged in the extension direction of the middle part of the puncture tube, and is movably connected in the fourth cavity, and the front section of the puncture tube is connected to the front end of the puncture tube. A conical puncture head is provided at the end, and a wiring head and a suction port are provided at the tail; a through hole connected to the cavity is provided on the conical puncture head, the wiring head is connected to the conical puncture head through a wire, and the suction port is connected to the cavity; the positioning bite mechanism includes a chassis, the chassis is slidably sleeved on the sleeve body through a guide hole provided in the middle, and a hinge column is provided on the chassis, a bite rod is hinged on the hinge column, a bite part is provided at the head of the bite rod, a hinge part is provided in the middle, and a pressing part is provided at the bottom; an elastic member for providing a bite force is provided between the bite rod and the hinge column.

2. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: There are two hinged columns, which are symmetrically arranged on the chassis; the pressing direction of the pressing part of the bite rod is arranged horizontally.

3. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: A positioning flange is provided on the outer wall of the tail of the puncture tube, a threaded portion is provided on the outer wall of the upper end of the sleeve body, and the positioning flange is fixed to the sleeve body through a locking cap provided on the threaded portion.

4. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: The bite portion is in an arc-shaped structure, and a non-slip rubber layer is provided on the contact surface between the bite portion and the sleeve body.

5. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: The bottom receiving groove of the fourth cavity hole is provided with an anti-backflow plug in the receiving groove, and a flexible sealing ring is provided on the middle through hole of the anti-backflow plug; the inner edge of the flexible sealing ring extends downward to the center line of the channel.

6. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: A silicone gasket is arranged at the lower end of the chassis.

7. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: The hinged part is fixed on the hinged column through a pin shaft; the elastic member is a torsion spring, and the torsion spring is sleeved on the pin shaft.

8. The casing device for electrohydraulic lithotripsy according to claim 1, characterized in that: The outer wall of the lower end of the sleeve body is in a conical structure.

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