Medical appliance with thread adjusting device
A technology for thread adjustment and medical equipment, applied in the field of medical equipment, can solve problems such as strength not up to standard, equipment failure, etc., and achieve the effect of improving the rate of qualified products, increasing safety, and enriching structural design.
Inactive Publication Date: 2010-06-09
TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD
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- Description
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- Application Information
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Problems solved by technology
Since the adjustment knob assembly is made of plastic injection molding as a whole, after many experiments, it is found that the strength of the internal thread of the adjustment knob assembly made of plastic is not up to the standard, that is, the entire device may fail, so it is necessary to further Improved screw adjustment device
Method used
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Embodiment Construction
[0024] As shown in the figure, the thread-adjustable surgical binding instrument includes a binding instrument body 1, a binding head, an adjustment device and a firing device. The adjustment device includes an adjustment knob 2 and a screw rod 3. A pin 5 is arranged on the screw rod 3, and the adjustment knob The front end of 2 is fixedly connected with a metal swivel 4. In this preferred embodiment, the metal swivel 4 is made of stainless steel. The metal swivel 4 is provided with two sections of threads 6a, 6b with different pitches. The first contact with the screw rod 3 is the coarse adjustment thread 6a with a larger pitch, and the fine adjustment thread 6b with a smaller pitch is set on the coarse adjustment thread. The rear side of 6a. In this use model, what is set on the metal screw sleeve 4 is two sections of threads with unequal pitches, certainly in order to adjust the needs of speed, also can be provided with several sections of screw threads with unequal pitche...
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The invention provides a medical appliance with a thread adjusting device. The thread adjusting device comprises an adjusting knob assembly and a screw rod, wherein the screw rod is provided with a pin, and the adjusting knob assembly is provided with threads. The pin is matched with the threads, and then the adjusting knob assembly performs the forward and backward adjustment function on the screw rod. The adjusting knob assembly comprises an adjusting knob and a metal rotary sleeve which are tightly and fixedly connected. The metal rotary sleeve is provided with threads which perform the forward and backward adjustment function. The invention has the advantage that the metal rotary sleeve is fixed on the plastic adjusting knob, and the threads on the metal rotary sleeve are made from metal, so the strength is enhanced, the safety of the machine is increased, the manufacture and processing cost of the instrument is effectively reduced, and the rate of qualified products is obviously enhanced. The invention enriches the structural design of the medical appliances, and provides more selection opportunities for manufacturers and users.
Description
technical field [0001] The invention relates to medical instruments, especially surgical staplers, cardiac bypass fixers, stent feeders, puncture instruments, orthopedic fixers, endoscopic instruments or various closers that are adjusted and positioned in a threaded manner during use and other medical devices. Background technique [0002] Surgical stapler is a medical device often used in surgical operations on intestinal and other physiological tissues, and its performance difference plays a vital role in the operation process and operation effect. The main steps in the use of the instrument are: first separate the anvil assembly and the staple cartridge assembly of the staple head part of the instrument, put the tissues to be stapled on and tie them into purses, and then connect the anvil assembly and the staple cartridge assembly, By adjusting the adjustment knob at the end of the stapler, under the connection of the screw rod, the anvil pull rod and the anvil shaft, th...
Claims
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Inventor 陈望东林江
Owner TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD