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One-part propelling and retreating mechanism and endoscopic cutting stapler comprising same

A technology of cutting teeth and transmission gears, applied in anatomical instruments, medical science, surgery, etc., can solve the problems of complex structure, poor reliability, and many mechanisms, and achieve the effect of simplifying the cutting mechanism, high reliability, and simplifying the operation mode

Inactive Publication Date: 2016-09-07
HANGZHOU TIANREN BIOLOGICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3) There are many mechanisms, complex structure and poor reliability

Method used

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  • One-part propelling and retreating mechanism and endoscopic cutting stapler comprising same
  • One-part propelling and retreating mechanism and endoscopic cutting stapler comprising same

Examples

Experimental program
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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the embodiments and accompanying drawings (1, 2).

[0027] The one-stage advancing and retreating mechanism 100 involved in the present invention includes a rotating rod 7, a pawl 6, a driving gear 5, a transmission gear 9, a reversing gear 8, a cutting gear 3, and a cutting rack 1. The rotating rod 7 By overcoming the pulling force of the spring 2 to rotate, the pawl 6 is fixedly connected with the rotating rod 7, and the rotating rod 7 is also fixedly connected with a ratchet 61 matched with the pawl 6, and the ratchet 6 is connected with the rotating rod 7. Ratchet 61 transmission connection, described driving gear 5 and described ratchet 61 are coaxially fixedly installed, and described driving gear 5 can be connected with described transmission gear 9, described reversing gear 8 respectively, and described cutting gear 3 and The transmission gear 9 is coaxial and fixedly installed, and the re...

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PUM

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Abstract

The invention discloses a one-part propelling and retreating mechanism and an endoscopic cutting stapler comprising the same. The one-part propelling and retreating mechanism comprises a turning rod, a pawl, a driving gear, a transmission gear, a reversing gear, a cutting gear and a cutting rack, wherein the turning rod overcomes tension of a spring to turn, the pawl is fixedly connected with the turning rod, a ratchet wheel is fixed on the turning rod and in transmission connection with the pawl, the driving gear is fixedly connected with the ratchet wheel and is in transmission connection with the transmission gear and the reversing gear, and the cutting rack is in transmission connection with the cutting gear. The stapler comprises the one-part propelling and retreating mechanism, a casing and an ejection rod, wherein the one-part propelling and retreating mechanism is fixedly mounted on the casing. With adoption of a structure of the ratchet wheel and all the gears, cutting is finished once, an operation process is simplified, and the product reliability is improved remarkably.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a one-stage advancing and retracting mechanism and an endoscopic cutting stapler composed of the same. Background technique [0002] At present, many endoscopic cutting staplers on the market are mainly imported brand Johnson & Johnson. The firing parts of this product are mainly composed of cutting handle, cutting knife pushing block, return spring, connecting rod latch, and latch return spring. , rack, large gear, pinion, cutting stroke display, ratchet and other parts. The firing method is: use the handle lever to push the cutter to push the block forward. Because the force arm is short, it needs to be pulled three times in a row to complete the entire cutting process. Although the handle is designed with a cutting stroke display in consideration of the doctor's easy to forget the number of cuts, this cutting method has the following disadvantages: [0003] 1) The cutting p...

Claims

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Application Information

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IPC IPC(8): A61B17/072A61B17/3209
CPCA61B17/00234A61B17/07207A61B17/3209A61B2017/00238A61B2017/00367
Inventor 赵涛张志勇张斌
Owner HANGZHOU TIANREN BIOLOGICAL TECH CO LTD
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