Special thoracic cavity puncture outfit

Abstract

The utility model relates to the field of medical instruments. The utility model aims at providing a special thoracic cavity puncture outfit which comprises a puncture sheath tube and a puncture core rod inserted in the puncture sheath tube, the puncture sheath tube is in a flat tube shape or a round tube shape, and the puncture core rod is in a flat rod shape or a round rod shape. A flow guide groove for guiding the flow direction of blood is formed in the outer wall of the puncture sheath tube, and the flow guide groove spirally extends along the peripheral wall of the puncture sheath tube. The flow guide groove is matched with the blood storage groove, so that the flow direction of blood is effectively guided, the blood is prevented from polluting an endoscope lens, and the operation view is kept clear; through the cooperation of the flat tubular puncture sheath tube and the flat rod-shaped puncture core rod, the puncture device is more suitable for narrow intercostal space positions such as the rear chest wall, and the effect of reducing intercostal nerve and blood vessel injuries is achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly to a special thoracic trocar. Background Art

[0002] At present, minimally invasive thoracoscopic surgery is becoming increasingly popular in the field of thoracic surgery. During the operation, the doctor establishes a surgical channel through the intercostal space of the patient. First, an incision is made between two ribs in the patient's thoracic cavity, and then a thoracic trocar is inserted to establish a surgical instrument channel. The doctor inserts an endoscope, surgical instruments, etc. through the instrument channel to perform thoracic surgery.

[0003] Most of the trocar cannulas on the market are straight throughout, with insufficient firmness when placed in the body. The instruments are prone to slipping when entering and exiting, and during the operation, the trocar pierces the chest wall, causing small blood vessels to rupture. A small amount of bleeding will flow along the surface of the trocar to the front end. When the blood contacts the endoscope, it will flow to the front end of the endoscope and contaminate the lens, resulting in an unclear surgical field.

[0004] In addition, due to the low mobility of the ribs in the posterior chest wall of the human body and the relatively narrow intercostal space, using a traditional trocar with a circular lumen is likely to aggravate the injury of the intercostal nerves and blood vessels. Content of the Utility Model

[0005] The purpose of the utility model is to provide a special thoracic trocar, which can effectively guide the blood flow direction, avoid blood contamination of the endoscope lens, and reduce the injury to the intercostal nerves and blood vessels.

[0006] The purpose of the utility model is realized through the following technical solutions:

[0007] A special thoracic trocar, which includes a puncture sheath tube and a puncture core rod inserted in the puncture sheath tube. The puncture sheath tube is flat tubular or circular tubular, and the puncture core rod is flat rod-shaped or circular rod-shaped; a blood flow guiding groove for guiding the blood flow direction is arranged on the outer wall of the puncture sheath tube, and the blood flow guiding groove spirally extends along the outer peripheral wall of the puncture sheath tube.

[0008] Preferably, the bottom end of the blood flow guiding groove is communicated with a blood storage groove, and the blood storage groove is a U-shaped structure with an upward opening.

[0009] Preferably, the puncture core rod includes a rod body, a hand-held seat arranged at the upper end of the rod body, and a puncture tip cone arranged at the lower end of the rod body. An adapter seat for constraint cooperation with the hand-held seat extends from the top edge of the puncture sheath tube to its periphery.

[0010] Preferably, the hand-held seat, the rod body, and the puncture tip cone are integrally formed.

[0011] Preferably, a transverse thread structure is arranged on the outer peripheral wall of the puncture sheath tube.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] 1. Through the cooperation of the diversion groove and the blood storage groove, the blood flow during the operation is effectively guided, avoiding blood contamination of the endoscope lens and keeping the surgical field of view clear;

[0014] 2. By providing a transverse thread structure on the outer wall of the puncture sheath tube, the firmness of the puncture sheath tube in the body is enhanced, effectively preventing the puncture sheath tube from slipping during the operation;

[0015] 3. Through the cooperation of the flat tubular puncture sheath tube and the flat rod-shaped puncture core rod, the present utility model is applicable to narrow intercostal space positions such as the posterior chest wall, achieving the effect of reducing the damage to intercostal nerves and blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of Embodiment 1 of a special thoracic puncture device of the present utility model;

[0017] Figure 2 is an exploded state diagram of Embodiment 1 of a special thoracic puncture device of the present utility model;

[0018] Figure 3 is a schematic structural diagram of Embodiment 2 of a special thoracic puncture device of the present utility model;

[0019] Figure 4 is an exploded state diagram of Embodiment 2 of a special thoracic puncture device of the present utility model;

[0020] Figure 5 is a schematic structural diagram of Embodiment 3 of a special thoracic puncture device of the present utility model;

[0021] Figure 6 is an exploded state diagram of Embodiment 3 of a special thoracic puncture device of the present utility model;

[0022] Figure 7 is an application scenario diagram of Embodiment 3 of a special thoracic puncture device of the present utility model.

[0023] Reference numerals: 1 puncture sheath tube, 11 adapter seat, 12 transverse thread structure, 2 puncture core rod, 21 rod body, 22 hand-held seat, 23 puncture tip cone, 3 diversion groove, 4 blood storage groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following details the content of the present utility model in conjunction with the specification drawings and embodiments, but the protection scope of the present utility model is not limited to the following:

[0025] As Figures 1 to 7 shown is a schematic diagram of an embodiment of a special thoracic puncture device provided by the present utility model.

[0026] Embodiment 1:

[0027] As shown in Figures 1-2 Figure 4: A special thoracic puncture device, which includes a puncture sheath tube 1 and a puncture core rod 2 inserted into the puncture sheath tube 1; the puncture sheath tube 1 is circular tubular, and the puncture core rod 2 is circular rod-shaped; a diversion groove 3 for guiding the blood flow direction is provided on the outer wall of the puncture sheath tube 1, and the diversion groove 3 spirally extends along the outer peripheral wall of the puncture sheath tube 1.

[0028] The diversion groove 3 can collect the vertically flowing blood, and the long stroke formed by the spiral extension of the diversion groove 3 can slow down the speed of the blood flowing to the bottom end of the puncture sheath tube 1. In addition, the diversion groove 3 has a certain depth and can accommodate a certain amount of blood to prevent the blood from directly dripping into the endoscope.

[0029] The bottom end of the diversion groove 3 is communicated with a blood storage groove 4, and the blood storage groove 4 is used to prevent the blood from flowing to the endoscope during the operation. In order to more effectively collect and store the blood, the blood storage groove 4 is a U-shaped structure with an upward opening.

[0030] The puncture core rod 2 includes a rod body 21, a hand-held seat 22 provided at the upper end of the rod body 21, and a puncture tip cone 23 provided at the lower end of the rod body 21. The top edge of the puncture sheath tube 1 extends outward to its periphery to form an adapter seat 11 that is constrained and cooperated with the hand-held seat 22;

[0031] The puncture tip cone 23 can be a cone, a multi-sided pyramid or an irregular pyramid with a sharp lower end;

[0032] The hand-held seat 22, the rod body 21 and the puncture tip cone 23 are integrally formed to improve the structural integrity.

[0033] Embodiment 2:

[0034] As shown in Figures 3-4 Figure 4: A special thoracic puncture device, which includes a puncture sheath tube 1 and a puncture core rod 2 inserted into the puncture sheath tube 1; the puncture sheath tube 1 is circular tubular, and the puncture core rod 2 is circular rod-shaped; a diversion groove 3 for guiding the blood flow direction is provided on the outer wall of the puncture sheath tube 1, and the diversion groove 3 spirally extends along the outer peripheral wall of the puncture sheath tube 1.

[0035] The puncture core rod 2 includes a rod body 21, a hand-held seat 22 provided at the upper end of the rod body 21, and a puncture tip cone 23 provided at the lower end of the rod body 21. The top edge of the puncture sheath tube 1 extends outward to its periphery to form an adapter seat 11 that is constrained and cooperated with the hand-held seat 22;

[0036] The puncture tip cone 23 can be a cone, a multi-sided pyramid or an irregular pyramid with a sharp lower end;

[0037] The hand-held seat 22, the rod body 21 and the puncture tip cone 23 are integrally formed to improve the structural integrity.

[0038] The outer peripheral wall of the puncture sheath tube 1 is provided with a transverse thread structure 12, which is used to enhance the firmness of the puncture sheath tube 1 in the body and prevent the puncture sheath tube 1 from slipping off.

[0039] Embodiment 3:

[0040] As Figures 5-7 shown: The basic structure of Embodiment 3 is generally similar to that of Embodiments 1 and 2, and the difference lies in that: the puncture sheath tube 1 is flat tubular, and the puncture core rod 2 is flat rod-shaped;

[0041] The puncture sheath tube 1 and the puncture core rod 2 adopt a flat structure design, which has small space requirements and can solve the space problem in the narrow intercostal space at the posterior chest wall position; and the flat puncture device causes less damage to the intercostal nerves and blood vessels, and the long opening of the flat puncture device also increases the movement space.

[0042] The application method of the present utility model is roughly as follows:

[0043] In actual application, a doctor can select the appropriate shapes and structures of the puncture sheath tube 1 and the puncture core rod 2 according to the surgical needs;

[0044] When establishing a surgical channel, the doctor inserts the puncture core rod 2 into the puncture sheath tube 1, controls the puncture depth through the restraint cooperation between the handheld seat 22 and the adapter seat 11, and uses the puncture tip cone 23 to pierce the chest wall;

[0045] When blood is generated during the operation, it will flow along the diversion groove 3 on the outer wall of the puncture sheath tube 1 into the blood storage groove 4, thereby preventing the blood from flowing to the front end of the endoscope.

[0046] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A special thoracentesis device, comprising a puncture sheath (1) and a puncture core rod (2) inserted into the puncture sheath (1), characterized in that: The puncture sheath tube (1) is in the shape of a flat tube or a round tube, and the puncture core rod (2) is in the shape of a flat rod or a round rod; A guide groove (3) for guiding the flow of blood is provided on the outer wall of the puncture sheath tube (1), and the guide groove (3) is arranged to extend spirally along the outer peripheral wall of the puncture sheath tube (1).

2. A special thoracentesis device according to claim 1, characterized in that: The bottom end of the guide groove (3) is connected to a blood storage groove (4), and the blood storage groove (4) is a U-shaped structure with an opening facing upward.

3. A special thoracentesis device according to claim 1, characterized in that: The puncture core rod (2) comprises a rod body (21), a hand-held seat (22) arranged at the upper end of the rod body (21), and a puncture cone (23) arranged at the lower end of the rod body (21); the top edge of the puncture sheath tube (1) extends toward its periphery with an adapter seat (11) that is constrained and matched with the hand-held seat (22).

4. A special thoracentesis device according to claim 3, characterized in that: The hand-held seat (22), the rod body (21) and the puncture cone (23) are integrally formed.

5. A special thoracentesis device according to claim 1, characterized in that: The outer peripheral wall of the puncture sheath tube (1) is provided with a transverse thread structure (12).

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