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Endoscope surgical instrument outer sheath with variable rigidity

A technique for surgical instruments and outer sheaths, applied to endoscopes, surgical instruments, internal fixators, etc., can solve the problems of inability to achieve free variable stiffness, poor adaptability to the cavity environment, complex structures, etc., and improve surgical safety. , large expansion rate, the effect of improving adaptability

Inactive Publication Date: 2014-02-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the device is complex, and it can only achieve two-dimensional bending, which has poor adaptability to the environment of the cavity. The locking device can only lock the shape and cannot realize free variable stiffness.

Method used

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  • Endoscope surgical instrument outer sheath with variable rigidity
  • Endoscope surgical instrument outer sheath with variable rigidity
  • Endoscope surgical instrument outer sheath with variable rigidity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Such as Figure 1 to Figure 5 As shown, the present invention is composed of several variable stiffness flexible units in series, each flexible unit includes: a first flexible high-stretch rate airbag 1, a second flexible high-stretch rate airbag 2, a third flexible high-stretch rate airbag 3, a rigid connection Piece 4, rigid wire 5, first disc 6, second disc 7, instrument channel 8, air inlet 9 and airway channel 10; in each flexible unit, rigid wire 5 passes through several rigid connectors 4 And are rigidly connected to it, the round hole on the rigid connecting piece 4 is sleeved at the smallest diameter position of the airbag to connect the three flexible high-stretch rate airbags together. Both ends of the three flexible high-stretch rate airbags are connected to the first disc 6 respectively , The second disc 7 is connected, the instrument channel 8 is located at the center of the rigid connector 4, the air inlet 9 and the air duct channel 10 are both arranged on...

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Abstract

The invention discloses an endoscope surgical instrument outer sheath with variable rigidity and belongs to the technical field of minimally invasive surgical instruments. The endoscope surgical instrument outer sheath is composed of a plurality of variable-rigidity flexible units. Each variable-rigidity flexible unit comprises an instrument passage, three high-flexibility air bags, rigid connectors, a rigid wire and two discs; the rigid wire penetrates the rigid connectors and is connected with the same rigidly, the three high-flexibility air bags are connected by the method of looping the minimum-diameter positions of the air bags by round holes of the rigid connectors, and two ends of each of the three high-flexibility air bags are connected with the first disc and the second disc respectively. Spatial bending and rigidity adjusting can be realized by controlling internal pressure of the air bags. The endoscope surgical instrument outer sheath can be fit with the physiological curves of cavities of the human body, does not compress the inner-wall tissues, provides mechanical support to the surgical instruments by means of rigidity adjustment after reaching at focuses, and assists doctors to do operation more effectively on the premise of guaranteeing safety of minimally invasive surgery.

Description

Technical field [0001] The invention relates to a surgical instrument outer sheath in the field of minimally invasive medical equipment, in particular to a channel for endoscopic surgical instruments to enter and exit the human body, and to improve the flexibility of minimally invasive endoscopic surgical instruments and the variability of surgical safety Rigid outer sheath of endoscopic surgical instruments. Background technique [0002] Natural cavity endoscopic surgery is a minimally invasive surgical treatment method for the treatment of celiac disease through the natural cavities of the mouth, vagina, colorectal, etc. without skin incisions. It is similar to the peritoneum and abdominal cavity. Less organ contact can reduce the trauma caused by traditional open surgery and laparoscopic surgery, reduce postoperative pain, and avoid complications such as wound infection, incisional hernia and intestinal obstruction. At present, due to the functional limitations of surgical in...

Claims

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Application Information

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IPC IPC(8): A61B1/012A61B17/94
Inventor 罗云赵儒镇赵爽李祥张文光
Owner SHANGHAI JIAO TONG UNIV
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