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Hard lens calculus removing device

A technology of hard mirror and outer sheath tube, which is applied in the fields of application, medical science, and internal bone synthesis, etc., can solve the problems of easy damage to the mucous membrane of the lumen, tissue around the fistula tract, and damage, so as to avoid spillage, improve safety, and avoid damage effect

Active Publication Date: 2012-07-11
刘衍民 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This repeated operation of entering and exiting is easy to damage the mucous membrane of the lumen and the tissues around the fistula tract, causing unnecessary damage.

Method used

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  • Hard lens calculus removing device
  • Hard lens calculus removing device
  • Hard lens calculus removing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: The hard mirror stone extraction device of the present invention

[0034] refer to Figure 1 to Figure 3 , in this embodiment, medical plastics, such as medical PP, medical PC, medical PE, medical PU, medical silica gel and other materials, or medical metal materials, such as medical stainless steel, medical titanium alloy and other materials can be used to manufacture the hard disk of the present invention. Mirror stone device.

[0035] First, the outer sheath tube (1) that has been manufactured is bonded on the direct head (44) of the Y-shaped joint (4) by chemical adhesive, and then the inner sheath tube (3) is inserted into the Y-shaped joint (4) ) and the outer sheath tube (1), the hard mirror stone removal device of the present invention has been obtained.

[0036] It should be pointed out that:

[0037] Both the outer sheath (1) and the inner sheath (3) are hollow thin-walled medical plastic tubes, wherein the outer diameter of the inner sheath (...

Embodiment 2

[0041] Embodiment 2: The stone removal device of the hard mirror of the present invention with a detachable Y-shaped joint

[0042] refer to Figure 4 to Figure 6, the difference between this embodiment and embodiment 1 is that the proximal end (100) of the outer sheath tube of embodiment 1 is directly bonded to the direct head (44) of the Y-shaped joint by chemical adhesive, while this embodiment In the example, a connecting piece (2) is added, and the connecting piece (2) adopts a threaded structure. On the one hand, the proximal end (100) of the outer sheath (1) is bonded to the connecting piece (2) by a chemical adhesive, On the other hand, the direct head (44) of the Y-shaped joint forms a detachable threaded connection mechanism (202) with the connecting piece (2). The advantage of adopting the detachable connection method is that the threaded connection mechanism (202) can be unscrewed when necessary, and the stones blocked at the side wall of the Y-shaped joint can be...

Embodiment 3

[0044] Embodiment 3: The hard mirror stone extraction device of the present invention with funnel-shaped sealing ring

[0045] refer to Figure 7 , the difference between this embodiment and embodiment 2 is that in embodiment 3, a funnel-shaped sealing ring (421) is set near the side joint (43) of the Y-shaped joint (4), and the sealing ring (421) passes through the sealing The ring gland (424) is threadedly connected to the distal housing (423) of the Y-shaped joint to form a sealing structure. The proximal housing (425) of the Y-shaped joint is glued and fixed on the gland (424) of the sealing ring by means of chemical bonding. This embodiment forms a double sealing ring structure, and the main function of the funnel-shaped sealing ring (421) near the side joint (43) of the Y-shaped joint is to block the stones there, so as to facilitate the flow out from the side joint (43).

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Abstract

The invention relates to a hard lens calculus removing device, which is of a double-sheath structure. A conical guide head is arranged at a far end of an inner sheath, can enable an outer sheath to be smoothly guided into a cavity (including inner and outer bile duct antrums of a liver, a bile duct antrum, a cholecyst antrum and a renal pelvis) and avoids damage of the outer sheath on circumferential tissues and a fistula wall. Elastic and tensile tissues are arranged around fistula, a lumen and an incision, the fistula and the lumen are in half-closing state when being not filled by liquid, and the diameters of the fistula and the lumen are smaller than the diameter of the outer sheath, thus tissues by the side the incision, the fistula wall, the lumen or a cyst wall surround and extrude the outer sheath so as to realize a seal effect and avoid overflow of internal liquid in the lumen and a cyst antrum. After the hard lens calculus removing device is guided into the lumen, the inner sheath is pulled out and the outer sheath is reserved. A Y-shaped joint is arranged on the outer sheath, and calculus surged along with water is conveniently discharged into a collection bag through a side hole of the Y-shaped joint. Due to a protection function of the outer sheath, various hard endoscopes, including oledochoscopes, hard lenses or percutaneous nephroscope set, and ureteroscope are indirectly in contact with soft tissues by the sides of a kidney fistula wall and a cholecyst incision, thus the damage on incision circumferential tissues, the fistula wall and a lumen wall due to repeated insertion and extraction of the endoscopes and devices is basically avoided, and the safety of an operation is improved.

Description

technical field [0001] The device for removing stones by a hard mirror according to the invention belongs to a kind of medical equipment, in particular, a surgical equipment for removing stones in the operation of intrahepatic bile duct, extrahepatic bile duct, gallbladder and percutaneous renal fistula in urology. Background technique [0002] Rigid laparoscopy is used for percutaneous kidney stone removal in urology, percutaneous liver stone removal in hepatobiliary surgery, gallbladder preservation and stone removal, stone removal through "T" tube fistula, and laparoscopic biliary stone removal, which have been more and more widely used. When removing stones, the rigid laparoscope needs to repeatedly enter and exit the lumen of the fistula to remove the stones. This repeated operation of entering and exiting is easy to damage the mucous membrane of the lumen and the tissues around the fistula tract, causing unnecessary damage. [0003] Therefore, it is necessary to impro...

Claims

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Application Information

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IPC IPC(8): A61B17/22A61B17/94
Inventor 刘衍民周星张建刚罗丽飞
Owner 刘衍民
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