Laparoscopic biliary tract puncture needle

Abstract

The utility model discloses a laparoscope biliary tract puncture needle which comprises a puncture needle tube, and the top end of the puncture needle tube is connected with a needle handle. The disposable puncture needle tube has the advantages that through the design of the puncture sheath tube, the first sealing cap and the scales, the structural strength and the sealing performance of the puncture needle tube in the using process are both improved, the phenomenon that the puncture needle tube is bent in the using process is avoided, and the defect that the pressure of the abdominal cavity of a patient is reduced in the laparoscopic surgery process is overcome; meanwhile, the puncture depth of the puncture needle tube can be precisely controlled by matching with scales, precise puncture can be conveniently performed on a patient, potential safety hazards of the biliary tract puncture needle during puncture are reduced, in addition, by matching with the design of a connecting hose and a first sealing cap, the influence of operation of an injector on the puncture process can be avoided in the puncture process, and the puncture efficiency is improved. The stable puncture of the puncture needle is ensured, and the use requirements of the biliary tract puncture needle for biliary tract radiography and biliary tract positioning in a laparoscopic surgery are met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a laparoscopic biliary puncture needle. Background Art

[0002] In laparoscopic surgery, to confirm the position of the common bile duct of a patient, a puncture needle needs to be inserted into the hepatobiliary part of the patient so as to locate the position of the common bile duct of the patient when bile is aspirated by an external syringe.

[0003] At present, the biliary puncture needle used clinically to confirm the position of the common bile duct of a patient mainly consists of a needle tube and a needle handle fixed at the head of the needle tube. Although the biliary puncture needle with such a structure can confirm the position of the common bile duct of the patient, on the one hand, the biliary puncture needle with the above structure is prone to bending of the needle tube during the puncture process due to the poor structural strength and sealing performance of the needle tube itself, and it will also reduce the pressure at the patient's abdominal cavity, affecting the normal progress of the operation. At the same time, since the outer wall of the biliary puncture needle with the above structure is a smooth structure, it is easy to have poor puncture accuracy due to inaccurate control of the puncture depth by medical staff during puncture, thus increasing the safety hazard of the biliary puncture needle during puncture. On the other hand, since the biliary puncture needle with the above structure is directly connected to an external syringe to aspirate the bile in the patient's body during use, it is easy for the biliary puncture needle to shake and move during puncture due to the shaking of the syringe, which is not convenient for efficiently confirming the position of the hepatobiliary common bile duct of the patient. In addition, the biliary puncture needle with the above structure has a single function and poor flexibility in use, and cannot meet the use requirements of biliary tract imaging and biliary tract positioning in laparoscopic surgery. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is to provide a laparoscopic biliary puncture needle with good structural strength, convenient for controlling the puncture depth, capable of avoiding the influence of the operation of the syringe on the puncture needle, and meeting the use requirements such as biliary tract imaging and biliary tract positioning in laparoscopic surgery according to the current situation of the prior art.

[0006] (2) Technical Solutions

[0007] The present utility model is realized through the following technical solutions: The present utility model provides a laparoscopic biliary puncture needle, which includes a puncture needle tube. The top end of the puncture needle tube is connected with a needle handle. In the middle of the upper end of the needle handle, a first sealing cap for sealing the upper port of the needle handle is fixed. The outside of the puncture needle tube is sleeved with a puncture sheath tube. In the middle of the top end of the puncture sheath tube, a circular slot is opened. On the needle handle, a circular insertion platform is installed at the position matching the slot. On one side wall of the needle handle, a connecting hose for facilitating the extraction of bile is connected through a connector. The end of the connecting hose away from the connector is connected to a switch on a three-way tube. At the unused port of the three-way tube, a second sealing cap is fixed. On the outer wall of the puncture needle tube, scales for accurately controlling the puncture depth are equally spaced from top to bottom.

[0008] Further, a pinch edge for facilitating the user to hold is also fixed on the puncture needle tube, and the pinch edge is bonded to the puncture sheath tube.

[0009] By adopting the above technical solution, pinching the pinch edge by hand can realize the convenient insertion and combination of the puncture sheath tube and the puncture needle tube.

[0010] Further, the needle handle is inserted into the puncture needle tube, and the middle part of the needle handle is of a hollow structure.

[0011] By adopting the above technical solution, holding the needle handle by hand can realize the convenient insertion of the puncture needle tube into the hepatobiliary position in the patient's abdominal cavity.

[0012] Further, the scales are bonded to the puncture needle tube. The total length of the puncture needle tube is 25 cm, and the total length of the scales is 5 cm.

[0013] By adopting the above technical solution, with the assistance of the scales, medical staff can accurately control the puncture depth of the patient.

[0014] Further, the puncture needle tube penetrates through the puncture sheath tube, and the puncture needle tube is internally connected with the connector.

[0015] By adopting the above technical solution, the puncture sheath tube can effectively increase the structural strength of the puncture needle tube during the puncture process, and avoid the puncture needle tube being bent and damaged during the puncture process.

[0016] Further, the connecting hose is inserted into the connector and the three-way tube, and the second sealing cap is inserted into the three-way tube, and the second sealing cap is made of rubber.

[0017] By adopting the above technical solution, the connecting hose can cooperate with the three-way pipe and an external syringe to perform convenient flushing and injection operations, so that the biliary puncture needle meets the usage requirements of biliary tract imaging and biliary tract positioning in laparoscopic surgery when in use.

[0018] Furthermore, the first sealing cap is inserted into the needle handle, and the first sealing cap is made of rubber.

[0019] By adopting the above technical solution, the first sealing cap can effectively ensure the sealing performance at the needle handle, ensure that bile at the patient's liver and gallbladder can be extracted through the connecting hose, and at the same time facilitate convenient injection operations on the patient during laparoscopic surgery.

[0020] (III) Beneficial effects

[0021] The utility model has the following beneficial effects compared with the prior art:

[0022] To solve the problem that the biliary puncture needle used to confirm the position of the patient's common bile duct clinically at present mainly consists of a needle tube and a needle handle fixed at the head of the needle tube. Although the biliary puncture needle with such a structure can determine the position of the patient's common bile duct, on the one hand, the biliary puncture needle with the above structure is prone to bending of the needle tube during the puncture process due to the poor structural strength and sealing performance of the needle tube itself, and it will also cause the reduction of the pressure in the patient's abdominal cavity, affecting the normal progress of the operation. At the same time, due to the smooth outer wall of the biliary puncture needle with the above structure, it is easy to have poor puncture accuracy due to inaccurate control of the puncture depth by medical staff during puncture, thus increasing the safety hazard during the puncture of the biliary puncture needle. On the other hand, since the biliary puncture needle with the above structure directly connects an external syringe to the puncture needle to extract bile from the patient's body, it is easy for the biliary puncture needle to shake and move during puncture due to the shaking of the syringe, which is not convenient for efficiently confirming the position of the patient's hepatobiliary duct. In addition, the biliary puncture needle with the above structure has a relatively single function and poor use flexibility, and cannot meet the usage requirements of biliary tract imaging and biliary tract positioning in laparoscopic surgery. Through the design of the puncture sheath tube, the first sealing cap and the scale, the structural strength and sealing performance of the puncture needle tube are improved during use, avoiding the phenomenon of bending of the puncture needle tube during use and the disadvantage of the reduction of the patient's abdominal cavity pressure during laparoscopic surgery. At the same time, the puncture depth of the puncture needle tube can be accurately controlled in cooperation with the scale, facilitating accurate puncture of the patient and reducing the safety hazard during the puncture of the biliary puncture needle. In addition, in cooperation with the design of the connecting hose and the first sealing cap, the influence of the operation of the syringe on the puncture process can be avoided during the puncture process, ensuring the stable puncture of the puncture needle, and meeting the usage requirements of biliary tract imaging and biliary tract positioning of the biliary puncture needle in laparoscopic surgery. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a laparoscopic biliary puncture needle described in the present utility model;

[0024] Figure 2 is a main sectional view of the needle handle, puncture sheath tube and puncture needle tube in a laparoscopic biliary puncture needle described in the present utility model;

[0025] Figure 3 is in a laparoscopic biliary puncture needle described in the present utility model Figure 2 an enlarged view of part A.

[0026] The description of the reference numerals is as follows:

[0027] 1. Needle handle; 2. Pinch edge; 3. Puncture sheath tube; 4. Puncture needle tube; 5. Scale; 6. Three-way tube; 7. Second sealing cap; 8. Connecting hose; 9. First sealing cap; 10. Insertion platform; 11. Slot; 12. Connector. Detailed Description of the Preferred Embodiment

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not used to limit the present utility model.

[0029] As Figures 1 - 3 shown, a laparoscopic biliary puncture needle in this embodiment includes a puncture needle tube 4. The top end of the puncture needle tube 4 is connected to a needle handle 1. In the middle of the upper end of the needle handle 1, a first sealing cap 9 for sealing the upper port of the needle handle 1 is fixed. The first sealing cap 9 can effectively ensure the sealing performance at the needle handle 1, so that when the puncture needle cooperates with the trocar for laparoscopy to enter the abdominal cavity, it can ensure good sealing at the patient's abdominal cavity, avoiding the influence on the normal progress of the surgical operation due to the decrease of the pneumoperitoneum pressure during the puncture operation. A puncture sheath tube 3 is sleeved outside the puncture needle tube 4. The puncture sheath tube 3 can effectively increase the structural strength of the puncture needle tube 4 during the puncture process, avoiding the bending and damage of the puncture needle tube 4 during the puncture process. In the middle of the top end of the puncture sheath tube 3, an annular slot 11 is opened. An annular insertion platform 10 is installed at the position of the needle handle 1 that cooperates with the slot 11. One side wall of the needle handle 1 is connected with a connecting hose 8 for facilitating the extraction of bile through a connector 12. The end of the connecting hose 8 far from the connector 12 is connected to the switch on a three-way tube 6. A second sealing cap 7 is fixed at the unused port of the three-way tube 6. Equally spaced scales 5 are fixed on the outer wall of the puncture needle tube 4 from top to bottom, which can assist medical staff to accurately control the puncture depth of the patient with the assistance of the scales 5.

[0030] As Figures 1 - 3As shown in the figure, in this embodiment, a pinch edge 2 for facilitating the user to hold the puncture needle tube 4 conveniently is also fixed on the puncture needle tube 4. The pinch edge 2 is bonded to the puncture sheath tube 3. By pinching the pinch edge 2 by hand, the puncture sheath tube 3 and the puncture needle tube 4 can be conveniently inserted and combined. The needle handle 1 is inserted into the puncture needle tube 4. The middle part of the needle handle 1 is a hollow structure. Holding the needle handle 1 by hand can realize the convenient insertion of the puncture needle tube 4 into the liver and gallbladder position in the patient's abdominal cavity. The scale 5 is bonded to the puncture needle tube 4. The total length of the puncture needle tube 4 is 25 cm, and the total length of the scale 5 is 5 cm. The puncture needle tube 4 penetrates through the puncture sheath tube 3, and the puncture needle tube 4 is internally communicated with the connector 12.

[0031] As Figures 1 - 3 shown in the figure, in this embodiment, the connecting hose 8 is inserted into both the connector 12 and the three-way tube 6. The second sealing cap 7 is inserted into the three-way tube 6, and the second sealing cap 7 is made of rubber. The connecting hose 8 can cooperate with the three-way tube 6 and an external syringe to perform convenient flushing and injection operations, so that the bile duct puncture needle meets the use requirements of bile duct imaging and bile duct positioning in laparoscopic surgery during use. The first sealing cap 9 is inserted into the needle handle 1, and the first sealing cap 9 is made of rubber. The first sealing cap 9 can effectively ensure the sealing performance at the needle handle 1, ensure that the bile of the patient's liver and gallbladder can be extracted through the connecting hose 8, and at the same time facilitate the convenient injection operation on the patient during laparoscopic surgery.

[0032] The specific implementation process of this embodiment is as follows: During use, first insert and fix the puncture sheath tube 3 and the puncture needle tube 4, and then just insert the puncture needle tube 4 into the liver and gallbladder part in the patient's abdominal cavity by holding the needle handle 1 and the pinch edge 2, then the puncture needle can be put into use. During the use process, under the action of the puncture sheath tube 3, the first sealing cap 9 and the scale 5, the structural strength and sealing performance of the puncture needle tube 4 during use are both improved, avoiding the phenomenon that the puncture needle tube 4 is bent during use and the disadvantage of the reduction of the abdominal cavity pressure of the patient during laparoscopic surgery. At the same time, the puncture depth of the puncture needle tube 4 can be accurately controlled in cooperation with the scale 5, facilitating accurate puncture of the patient and reducing the safety hazards during the puncture of the bile duct puncture needle. In addition, with the design of the connecting hose 8 and the first sealing cap 9, the influence of the operation of the syringe on the puncture process can be avoided during the puncture process, ensuring the stable puncture of the puncture needle, and meeting the use requirements of bile duct imaging and bile duct positioning of the bile duct puncture needle in laparoscopic surgery.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laparoscopic bile duct puncture needle, characterized in that: The invention comprises a puncture needle tube (4), the top end of which is connected to a needle handle (1), a sealing cap (9) for sealing an upper port of the needle handle (1) is fixed in the middle of the upper end of the needle handle (1), a puncture sheath tube (3) is sleeved on the outside of the puncture needle tube (4), a circular slot (11) is provided in the middle of the top end of the puncture sheath tube (3), a circular inserting platform (10) is installed on the needle handle (1) at a position matching with the slot (11), a connecting hose (8) for conveniently extracting bile is connected to one side wall of the needle handle (1) through a connecting head (12), the end of the connecting hose (8) away from the connecting head (12) is connected to a switch on a three-way tube (6), a sealing cap (7) is fixed at an unused port of the three-way tube (6), and scales (5) for conveniently controlling the puncture depth are fixed at equal intervals from top to bottom on the outer wall of the puncture needle tube (4).

2. A laparoscopic bile duct puncture needle according to claim 1, characterized in that: The puncture needle tube (4) is also fixed with a gripping edge (2) for convenient holding by a user, and the gripping edge (2) is bonded to the puncture sheath tube (3).

3. The laparoscopic bile duct puncture needle according to claim 1, characterized in that: The needle handle (1) is plugged into the puncture needle tube (4), and the middle portion of the needle handle (1) is a hollow structure.

4. The laparoscopic bile duct puncture needle according to claim 1, characterized in that: The scale (5) is bonded to the puncture needle tube (4); the total length of the puncture needle tube (4) is 25 cm, and the total length of the scale (5) is 5 cm.

5. The laparoscopic bile duct puncture needle according to claim 1, characterized in that: The puncture needle tube (4) passes through the puncture sheath tube (3), and the puncture needle tube (4) is connected to the inside of the connector (12).

6. The laparoscopic bile duct puncture needle according to claim 1, characterized in that: The connecting hose (8) is plugged into the connecting head (12) and the three-way pipe (6), the second sealing cap (7) is plugged into the three-way pipe (6), and the second sealing cap (7) is made of rubber.

7. The laparoscopic bile duct puncture needle according to claim 1, characterized in that: The sealing cap 1 (9) is plugged into the needle handle (1), and the sealing cap 1 (9) is made of rubber.

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