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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AI-Extracted 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...
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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.

Application Domain

Surgical needlesTrocar

Technology Topic

Thoracic structureGeneral surgery +3

Image

  • Thoracic and abdominal puncture knife

Examples

  • Experimental program(3)

Example Embodiment

[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 tapered transition area 11 is formed between the right end of the aforementioned tool rod body 1 and the left end of the aforementioned easy-to-bend transition section 3; and a tool head tapered transition area is formed between the left ends of the aforementioned tool head 2 twenty two. The diameter of the tapered transition zone 11 of the shank gradually decreases from the direction of the shank body 1 towards the left end of the easy-bending transition section 3 until it is the same as the diameter of the easy-bending transition section 3, that is, from 3.3 mm to 1.1 mm; The diameter of the tapered transition zone 22 of the cutter head gradually decreases from the cutter head 2 towards the right end of the easy-bending transition section 3 until it is the same as the diameter of the easy-bending transition section 3, that is, from 3.3 mm until it becomes smaller to 1.1 mm. mm.
[0025] In the present embodiment, the length of the aforementioned cutter head tapered transition zone 22 is 1/4 of the length of the rod body tapered transition zone 11, while the length of the rod body tapered transition zone 11 in this embodiment is 1.6 cm, thus The length of the tapered transition zone 22 of the cutter head is 0.4 cm.
[0026] A drainage pipe joint 12 is formed at the end of the aforementioned knife bar body 1 away from the easy-bending transition section 3, namely at the left end of the knife bar body 1. The diameter of the drainage pipe joint 12 is 2 mm and the length is 2 cm. The length of the knife rod body 1 in this embodiment is 8cm.
[0027] please continue figure 1 The aforementioned blade 21 includes first, second, third, fourth cutting edges 211, 212, 213, 214 and fifth cutting edge 215, and the first and second cutting edges 211, 212 are formed symmetrically with each other in the aforementioned On both sides of the cutter head 2, the third cutting edge 213 is formed in the center of the cutter head 2, the fourth cutting edge 214 is formed between the first and third cutting edges 211, 213, and the fifth cutting edge is formed between the second and third cutting edges. Between the third cutting edge 212,213. In order to ensure hygiene and safety, the aforementioned knife rod body 1 and the knife head 2 are made of stainless steel, and the grade of the stainless steel is stainless steel 304.

Example Embodiment

[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.

Example Embodiment

[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 of the tapered transition zone 11 , the easy-to-bend transition section 3 , the tapered transition section 22 of the cutter head and the length of the cutter head 2 .

PUM

PropertyMeasurementUnit
Diameter3.3 ~ 6.6mm
Length0.8 ~ 1.6cm
Length4.0 ~ 8.0cm

Description & Claims & Application Information

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