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Thoracic and abdominal puncture knife

A technology of abdominal cavity and thoracic cavity, which is applied in the field of medical equipment, can solve problems such as difficulty in radian, influence on puncture speed, difficulty in guaranteeing puncture effect, etc., and achieve the effect of convenient operation and material saving

Inactive Publication Date: 2018-08-24
陈慧仪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Not limited to the puncture knives involved in the patents cited above and the puncture knives currently used in medical clinics generally have the following technical problems: one, because the diameter of the knife head with the blade is the same as the diameter of the knife rod body, especially because the knife head It is on the same axis (that is, on the same straight line) as the knife rod body, so when the surgeon performs a puncture operation on the patient, he cannot operate according to the angle required for the puncture operation. Specifically, the surgeon can only change his limb posture. It is the angle change of the hand holding the puncture knife to meet the angle requirements required for puncture, which not only increases the operating strength of the surgeon, but also makes it difficult to guarantee the desired puncture effect and also affects the puncture speed; Surgery, usually before the operation, according to the patient's posture, puncture site (puncture point) and other factors, it is necessary to bend the knife head, so that a reasonable arc is formed between the knife head and the knife rod body, so as to facilitate the smooth operation of the puncture knife. Piercing into the patient's chest or abdominal cavity, but because the diameter of the knife head is the same as the diameter of the knife body, and because the material of the puncture knife is high-strength stainless steel, it is very difficult to bend the arc
The applicant has noticed that the aforementioned CN301439549S and CN301439550S ​​form a radian on the body of the knife rod, that is, a circular arc bending part is formed on the body of the knife rod, but the circular arc bending part is mechanically formed by the manufacturer of the piercing knife , and cannot fully adapt to the puncture angle of all patients, because the degree of arc formed between the knife head and the knife rod body by the surgeon varies from person to person (patient), and is random; third, due to the blade structure Unreasonable, thus affecting the puncture speed to a certain extent

Method used

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  • Thoracic and abdominal puncture knife

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1: see figure 1 , provides a cutter bar body 1 and a cutter head 2 which is integrally formed at one end of the cutter bar body 1 (the right end of the figure) and has a diameter equal to the diameter of the cutter bar body 1. On the cutter head 2, the cutter head 2 The right end of the blade constitutes a blade 21.

[0023] As the technical gist of the technical solution provided by the present invention: an easy-to-bend transition section 3 is formed between the aforementioned knife rod body 1 and the aforementioned knife head 2, and the easy-to-bend transition section 3 can also be called a weak strength section or Other similar technical features are called, and the diameter of the easy-to-bend transition section 3 is one-third of the diameter of the knife-shank body. Since the diameter of the knife-shank body 1 in this embodiment is 3.3mm, the easy-to-bend transition section 3 has a diameter of 1.1mm.

[0024] Depend on figure 1 As shown, a rod body tape...

Embodiment 2

[0028] Embodiment 2: Only change the diameter of the cutter body to 6.6mm, change the diameter of the easy-bending transition section 3 to 1.32mm; change the length of the tapered transition zone 11 of the rod body to 0.9cm, and change the tapered transition The length of zone 22 is changed to 0.3cm; the diameter of the drainage tube fitting 12 is changed to 4mm, and the length of the drainage tube fitting 12 is changed to 2.5cm, while the length of the knife rod body 1 is changed to 7.5cm. All the other are the same as the description to embodiment 1.

Embodiment 3

[0029] Embodiment 3: Only change the diameter of the cutter body 1 to 4.8mm, change the diameter of the easy-bending transition section 3 to 1.2mm; change the length of the tapered transition zone 11 of the rod body to 1.2cm, and change the cone The length of the transition zone 22 is changed to 0.4cm; the diameter of the drainage pipe fitting 12 is changed to 2mm, and the length of the drainage pipe fitting 12 is changed to 2cm, and the length of the knife rod body 1 is changed to 6cm. All the other are the same as the description to embodiment 1.

[0030] The present invention can be made in the corresponding size (parameter) range that limits to cutter bar body 1, rod body tapered transition area 11, drainage pipe fitting joint 12, knife head tapered transition area 22, easy-bending transition section 3 above Chest and abdominal puncture knives of various specifications.

[0031] The length of the cutter body 1 described in Embodiments 1 to 3 does not include the lengths o...

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Abstract

The invention discloses a thoracic and abdominal puncture knife, and belongs the technical field of medical apparatuses. The puncture knife comprises a knife rod body and a knife head which is integrally arranged at one end of the knife rod body and is identical to the knife rod body in diameter, and a knife edge is constituted on the knife head; the puncture knife is characterized in that an easy-to-bend transition section is constituted between the knife rod body and the knife head; and the diameter of the easy-to-bend transition section is 1 / 3-1 / 5 of the diameter of the knife rod body. Angle requirements of doctors, who implement a puncture operation on a patient in clinical, can be satisfied by bending the knife head having the knife edge relative to the knife rod body as required; theoperation can be facilitated, and operating difficulty of the operating doctors can be reduced and puncture efficiency can be improved; and materials can be saved; therefore, the puncture knife is consistent with the spirit of economizing and energy-saving economy which is advocated by the whole society at present.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, in particular to a puncture knife for the chest cavity and abdominal cavity. Background technique [0002] The puncture knife mentioned above is also called a puncture drainage needle or a puncture guide needle, which is a surgical equipment for thoracotomy and abdominal cavity puncture. As far as thoracentesis is concerned, the puncture knife is pierced through the chest wall through the skin and enters the pleural cavity, which is used to extract pleural fluid, pneumothorax, hemorrhage or forceps pleural tissue, intrapleural administration, etc. Disease diagnosis and treatment. [0003] The technical information about the puncture knife can be found in Chinese patent documents, such as the utility model patent authorization announcement number CN201422912Y recommending "a puncture guide needle for minimally invasive surgery" and the invention patent authorization announcement number ...

Claims

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Application Information

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IPC IPC(8): A61B17/34
CPCA61B17/3417A61B2017/3454
Inventor 陈慧仪
Owner 陈慧仪
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