Manufacturing method of puncture mandrel, puncture mandrel and puncture device
A manufacturing method and a puncture core technology, which are applied in the field of medical equipment, can solve the problems that the molding rod is prone to offset and affect the injection molding of the puncture core rod, and achieve the effects of avoiding offset, reducing the reject rate and ensuring stability.
Active Publication Date: 2019-01-25
FENGH MEDICAL CO LTD
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Problems solved by technology
However, in the above production process, the forming rod is prone to deviation, which affects the injection molding of the piercing core rod
Method used
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Embodiment Construction
[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout.
[0024] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship indicated by , "reciprocating", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , constructed and operated in a particular orientatio...
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The invention discloses a manufacturing method of a puncture core rod, a puncture core with the puncture core rod and a puncture outfit. The manufacturing method of the puncture core rod comprises the following steps that firstly, a forming rod is fed into an injection molding cavity; secondly, a locating rod is made to extend into the injection molding cavity, the locating rod abuts against the forming rod, and under the action force exerted by the locating rod, the position of the forming rod is kept fixed relative to the inner wall of the injection molding cavity; and thirdly, injection molding materials are injected into an injection molding space between the injection molding cavity and the forming rod, the puncture core rod is formed after pressure maintaining and cooling are conducted on the injection molding materials, and demolding is conducted on the formed puncture core rod. According to the manufacturing method of the puncture core rod, the forming rod is located through the locating rod, the stability of the position of the forming rod can be effectively guaranteed in the injection molding process, the forming rod is prevented from deviating, so that smooth injection molding of the puncture core rod can be achieved, and the rejection rate of the product is reduced.
Description
technical field [0001] The invention relates to the field of medical equipment, in particular to a manufacturing method of a puncture core rod, a corresponding puncture core rod and a puncture device. Background technique [0002] In abdominal examination, abdominal surgery and other minimally invasive or surgical operations, trocar is an indispensable surgical instrument. The puncture device can establish an access channel in the abdominal wall of the human body, so that the laparoscope or other surgical instruments (such as endoscopes, scissors, staplers, guide wires, catheters, filters, stents, etc.) Channels to control the pneumoperitoneum required for surgery for examination or surgical manipulation. [0003] At the beginning of a minimally invasive laparoscopic medical operation, the doctor generally makes a small incision in the patient's abdomen, and then aligns the apex of the puncture end with the small incision and moves it downward while reciprocating left and r...
Claims
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IPC IPC(8): B29C45/14A61B17/34
CPCA61B17/34A61B17/3417A61B2017/00526B29C45/14065
Inventor 孙宝峰马猛
Owner FENGH MEDICAL CO LTD