Three-section type puncture outfit

Abstract

The utility model discloses a three-section type puncture outfit which comprises a sheathing canal body and a puncture cone. An airtight middle body is arranged on the outer side of the top of the sheathing canal body, and an inflation connector is formed in one side of the airtight middle body; the puncture cone is arranged in the sheath tube body, and a positioning block is arranged at the top of the puncture cone; a dismounting mechanism is arranged in the positioning block and the airtight middle body; one end of the buckle A can be separated from the interior of the airtight middle body, fixation of the positioning block is relieved, the positioning block can be detached, detachment is more convenient, the sheath tube body is exposed, a channel is formed through the sheath tube body, operation auxiliary materials such as gauze and cotton balls can be conveniently conveyed into the body of a patient in the operation process, and the operation efficiency is improved. Tissue sampling in the operation process is also facilitated; the puncture needle head and the medical grade stainless steel tube are in smooth transition, the puncture needle head is pulled out smoothly without pause, the surface of the inflation connector is a double-layer sealing cap, and a choke valve can effectively prevent gas leakage when an instrument is inserted or taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of trocars, in particular to a three-section trocar. Background Technique

[0002] Laparoscopic surgery is currently the most widely used minimally invasive surgical method in clinical practice. During the surgery, a laparoscopic trocar is used to penetrate the body wall of the human body (such as the chest, abdomen, waist, etc.) through the skin, and the front end of the sheath tube of the trocar is left in the body cavity such as the abdominal cavity, thoracic cavity or retroperitoneal cavity, and then surgical instruments are inserted through the channel in the puncture sheath tube to perform corresponding surgical operations on the tissues and organs in the above-mentioned body cavity. The laparoscopic trocar is an instrument that must be used in this surgery.

[0003] In the related technology, through retrieval, a solution for a trocar for minimally invasive thoracic surgery (publication number: CN205322443U) is found. The puncture needle of the trocar includes a needle rod, a needle tip and a needle seat, and the needle tip and the needle seat are respectively fixed at both ends of the needle rod; the puncture sleeve includes a sleeve seat and a hollow sleeve, the sleeve seat is fixed at one end of the sleeve, and an anti-slip ring is arranged on the sleeve; the puncture needle passes through the sleeve, the needle tip penetrates out of one end of the sleeve, and the needle seat abuts against the sleeve seat. When in use, the structural design is reasonable, the operation is convenient, the puncture is smooth, the anti-slip effect is good, and the surgical efficiency is improved.

[0004] However, since the needle seat and the needle rod are integrally formed, when using the needle seat and the needle rod, the needle seat and the needle rod cannot be disassembled, and surgical accessories such as gauze and cotton balls cannot be delivered from the inside of the needle rod. It is also necessary to process from the needle tip at the bottom of the needle rod, which leads to subsequent operations being more cumbersome during the surgery and tissue sampling cannot be performed during the surgery. In view of this, we introduce a three-section trocar. Content of the Utility Model

[0005] The purpose of the utility model is to provide a three-section trocar to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A three-section trocar, comprising: a sheath tube body and a puncture cone;

[0007] An airtight middle body is arranged on the outer side of the top of the sheath tube body, and an inflation connection port is arranged on one side of the airtight middle body. The inflation connection port is convenient for connecting with other external devices;

[0008] The puncture cone is arranged inside the sheath tube body, and a positioning block is arranged on the top of the puncture cone;

[0009] A disassembly mechanism is arranged inside the positioning block and the airtight middle body. By driving the buckle A to move through the button A of the disassembly mechanism, the buckle A can be moved out of the airtight middle body.

[0010] Preferably, the disassembly mechanism includes an empty groove formed on the surface of the airtight middle body. The empty groove and the airtight middle body are integrally formed. An elastic member is disposed on one side of the positioning block inside the button A. The button A is slidably connected inside the positioning block. The buckle A is connected to the bottom of the button A, and the button A and the buckle A are integrally formed. The buckle A is stuck inside the airtight middle body, and a puncture needle is connected to the bottom of the puncture cone.

[0011] Preferably, the disassembly mechanism further includes a positioning ring clamped at the bottom of the airtight middle body. One side of the positioning ring is connected with a button B. The top of the button B is connected with a buckle B, and the buckle B and the button B are integrally formed. A connecting block is connected to the inner side of the airtight middle body, and the connecting block and the airtight middle body are integrally formed, and the buckle B is stuck on the surface of the connecting block.

[0012] Preferably, a buckle C is connected to one side of the buckle B at the top of the button B, and the buckle C and the button B are integrally formed. A placement block is connected to the inner side of the airtight middle body, and the placement block and the airtight middle body are integrally formed, and the buckle C is stuck on the surface of the placement block.

[0013] Preferably, a sealing ring is connected to the surface of the sheath tube body, which is convenient for forming a seal.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By pressing the button A, the buckle A is driven to move, so that one side of the button A contacts the elastic member and forms extrusion. One end of the buckle A will then disengage from the inside of the airtight middle body, releasing the fixation of the positioning block, and the positioning block can be disassembled more conveniently. By pressing the button B, one side of the button B drives the buckle B and the buckle C to move respectively, so that the buckle B disengages from the surface of the connecting block, and one end of the buckle C can disengage from the surface of the placement block. At this time, the airtight middle body can be removed more conveniently, exposing the sheath tube body. A channel is formed by the sheath tube body, which is convenient for delivering surgical accessories such as gauze and cotton balls into the patient's body during the operation, and is also convenient for tissue sampling during the operation;

[0015] The puncture needle has a bladeless transparent tip design, which is convenient for controlling the puncture process under direct vision and monitoring the operation. The puncture needle and the medical-grade stainless steel tube have a smooth transition, and the extraction is smooth without a sense of jerk. The surface of the inflation connection port is designed with a double-layer sealing cap and a gas blocking valve, which can effectively prevent gas leakage when the instrument is inserted or removed, and is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0017] Figure 2This is a schematic structural view of the side view of the utility model;

[0018] Figure 3 This is a schematic structural view of the front cross-section of the utility model;

[0019] Figure 4 This is a schematic structural view when the puncture cone and the positioning block of the utility model are connected;

[0020] Figure 5 This is a schematic structural view of the top view of the utility model.

[0021] In the figure: 1. Sheath tube body; 2. Sealing ring; 3. Puncture needle; 4. Inflation connection port; 5. Airtight middle body; 6. Positioning block; 7. Button B; 8. Button A; 9. Snap A; 10. Connecting block; 11. Snap B; 12. Placing block; 13. Snap C; 14. Puncture cone; 15. Empty slot; 16. Positioning ring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: a three-stage puncture device, including: a sheath tube body 1, an airtight middle body 5 is arranged on the outer side of the top of the sheath tube body 1, and an inflation connection port 4 is arranged on one side of the airtight middle body 5;

[0024] A puncture cone 14, the puncture cone 14 is arranged inside the sheath tube body 1, and a positioning block 6 is arranged on the top of the puncture cone 14;

[0025] A disassembly mechanism is arranged inside the positioning block 6 and the airtight middle body 5. By driving the snap A 9 to move through the button A 8 of the disassembly mechanism, the snap A 9 is moved out of the airtight middle body 5.

[0026] The disassembly mechanism includes an empty slot 15 opened on the surface of the airtight middle body 5, an elastic member is arranged on one side of the button A 8 inside the positioning block 6, the button A 8 is slidably connected inside the positioning block 6, the snap A 9 is connected to the bottom of the button A 8, the button A 8 and the snap A 9 are integrally formed, the snap A 9 is stuck inside the airtight middle body 5, and the bottom of the puncture cone 14 is connected with a puncture needle 3.

[0027] The disassembly mechanism further includes a positioning ring 16 which is snap-connected to the bottom of the airtight middle body 5. One side of the positioning ring 16 is connected with a button B7. The top of the button B7 is connected with a buckle B11. The buckle B11 and the button B7 are integrally formed. The inner side of the airtight middle body 5 is connected with a connecting block 10. The connecting block 10 and the airtight middle body 5 are integrally formed. And the buckle B11 is stuck on the surface of the connecting block 10.

[0028] On one side of the buckle B11 at the top of the button B7, there is a buckle C13 connected. The buckle C13 and the button B7 are integrally formed. The inner side of the airtight middle body 5 is connected with a placement block 12. The placement block 12 and the airtight middle body 5 are integrally formed. The buckle C13 is stuck on the surface of the placement block 12.

[0029] A sealing ring 2 is connected to the surface of the sheath tube body 1. The sealing ring 2 is convenient for forming a seal.

[0030] Specifically, during use, by pressing the button A8 to drive the buckle A9 to move, one side of the button A8 contacts the elastic member to form extrusion. And one end of the buckle A9 will break away from the inside of the airtight middle body 5, thus releasing the fixation of the positioning block 6. At this time, the positioning block 6 can be disassembled, and the disassembly is more convenient. By pressing the button B7, one side of the button B7 drives the buckle B11 and the buckle C13 to move respectively, so that the buckle B11 breaks away from the surface of the connecting block 10, and one end of the buckle C13 can break away from the surface of the placement block 12. At this time, the airtight middle body 5 can be removed, and the disassembly is more convenient, exposing the sheath tube body 1. Using the sheath tube body 1 to form a channel is convenient for delivering surgical accessories such as gauze and cotton balls into the patient's body during the operation, and is also convenient for tissue sampling during the operation;

[0031] The puncture needle 3 has a bladeless transparent tip design, which is convenient for controlling the puncture process under direct vision and monitoring the operation. The puncture needle 3 and the medical-grade stainless steel tube have a smooth transition, and the extraction is smooth without a sense of jerk. The surface of the inflation connection port 4 has a double-layer design of a sealing cap and an air-blocking valve, which can effectively prevent gas leakage when the instrument is inserted or removed, and is convenient for use.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-stage trocar, characterized in that: include: A sheath tube body (1), wherein an airtight middle body (5) is arranged on the outer side of the top of the sheath tube body (1), and an air-filling connection port (4) is arranged on one side of the airtight middle body (5); A puncture cone (14), wherein the puncture cone (14) is arranged inside the sheath tube body (1), and a positioning block (6) is arranged at the top of the puncture cone (14); A disassembly mechanism is provided inside the positioning block (6) and the airtight middle body (5), and a button A (8) of the disassembly mechanism drives the buckle A (9) to move so that the buckle A (9) moves out of the airtight middle body (5).

2. A three-stage trocar according to claim 1, characterized in that: The disassembly mechanism comprises a hollow groove (15) provided on the surface of the airtight middle body (5); an elastic member is arranged inside the positioning block (6) on one side of the key A (8); the key A (8) is slidably connected inside the positioning block (6); the buckle A (9) is connected to the bottom of the key A (8); the buckle A (9) is stuck inside the airtight middle body (5); and the bottom of the puncture cone (14) is connected to the puncture needle (3).

3. A three-stage trocar according to claim 1, characterized in that: The disassembly mechanism further comprises a positioning ring (16) which is clamped at the bottom of the airtight middle body (5); a button B (7) is connected to one side of the positioning ring (16); a buckle B (11) is connected to the top of the button B (7); a connecting block (10) is connected to the inner side of the airtight middle body (5); and the buckle B (11) is clamped on the surface of the connecting block (10).

4. A three-stage trocar according to claim 3, characterized in that: The top of the button B (7) is located on one side of the buckle B (11) and is connected to a buckle C (13); the inner side of the airtight middle body (5) is connected to a placement block (12); and the buckle C (13) is stuck on the surface of the placement block (12).

5. A three-stage trocar according to claim 1, characterized in that: A sealing ring (2) is connected to the surface of the sheath tube body (1).

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