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Disposable self-pressurizing intestinal stapler

A disposable, stapler technology, applied in the field of medical devices, can solve the problems of residual metal nails, application, increase the operation steps and difficulty, and achieve the effect of reducing various complications and solving difficult operations.

Inactive Publication Date: 2018-05-22
LANZHOU SEEMINE SMA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many staplers cannot control the occurrence of postoperative complications well, such as the stapled intestinal stapler, which is likely to cause residual metal nails on the intestinal wall in the body, and is prone to infection; BAR disposable mechanical buckle intestinal stapler , due to the structural characteristics, it cannot be conveniently and quickly applied to the anastomosis of the lower rectum. If there is a safety hazard after the anastomosis, but at this time the BAR cannot be opened again, remedial measures must be taken, and additional surgical steps and difficulty

Method used

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  • Disposable self-pressurizing intestinal stapler
  • Disposable self-pressurizing intestinal stapler
  • Disposable self-pressurizing intestinal stapler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The first structure of the disposable self-pressurizing intestinal stapler of the present invention, such as figure 1As shown, the anastomotic pressing mechanism in the disposable self-pressurizing intestinal stapler is two matching pressing valves 3, and the pressing valves are in the shape of an umbrella, with a circular shaft hole in the middle of the umbrella, surrounding each other. The umbrella-shaped surfaces of the two anastomotic pressure flaps are evenly provided with corresponding paired sockets; the plugs at both ends of each memory alloy locking insert are correspondingly plugged into a pair of sockets. The anastomotic pressure valve 3 is injection molded with medical polymer materials such as PP, PE, Teflon, etc. or degradable polymer materials such as PGA, PGLA, PPDO, etc. The triangular shaft holes are symmetrically opened on the pressurized valve for the sake of aesthetics and to reduce certain material loss, which is more economical. When using degrada...

Embodiment 2

[0041] The second structure of the disposable self-pressurizing intestinal stapler of the present invention, such as Figure 4 As shown, the selected plug 13 is a memory alloy anastomotic clip with a T-shaped buckle adapted to the socket. Except for the memory alloy anastomotic clip, the rest of the parts are made of medical polymer materials such as: PP, PE, polytetrafluoroethylene, polysulfone Etc. or use degradable polymer materials such as: PGA, PGLA, PPDO, etc. plus some barium sulfate (as a developer) for injection molding. Such as Figure 4 As shown, the matching pressing mechanism is made up of two annular pressing plates 2 and two matching pressing flaps 3; the middle part of the two annular pressing plates 2 has a shaft hole as a central channel; the top of the pressing flaps An annular retaining ring 32 on the face, the periphery of the retaining ring 32 extends downwards to form a tubular anastomotic end, the inner wall of the anastomotic end is provided with an i...

Embodiment 3

[0047] Such as Figure 7-9 As shown, the third structure of the disposable self-pressurizing intestinal stapler of the present invention is different from the second structure in that it does not contain a sleeve, and adopts an annular pressure plate 2 with an enlarged central axis hole. Corresponding to the sockets 21 accommodating the plugs at both ends of the memory alloy locking insert, they are evenly distributed on the annular plate surfaces of the two annular pressure plates, and the plug 13 is selected as a memory alloy anastomotic clip with double T-shaped buckles in series. The socket 21 is a square shaft hole, which is plugged and assembled by strong pressure, with interference fit and firm fastening. Similarly, the force generated by the memory alloy anastomotic clip will be transmitted to the annular pressure plate 2 through the interference fit there. The portion near the socket in the axial hole in the middle of the annular pressure plate whose central axial hol...

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Abstract

The invention discloses a disposable self-pressurizing intestinal stapler. The stapler comprises two pressurizing mechanisms which are anastomosed with one another and made of degradable polymer materials and a positioning locking mechanism made of memory alloy; the positioning locking mechanism comprises a plurality of memory alloy locking inserting members, two ends of each memory alloy lockinginserting member are provided with plugging heads to be correspondingly connected with the pressurizing mechanisms in an inserting mode, and the pressurizing mechanisms are connected and anastomosed with one another by adopting the memory alloy locking inserting members as connecting members. According to the stapler, after the stapler is installed in a patient, based on phase transition temperature characteristics of the memory alloy, the memory alloy is in an state in which the alloy constantly restores to an original state in a body temperature state, so that constant contraction force is generated to conduct effective, reliable and constant pressurizing on an anastomosis site to pertinently solve the problem of end-to-end anastomosis of a colonic area, and ensure that anastomosis forceis not affected by repeatedly opening and closing, and various kinds of complications are effectively and safely reduced, and the problem of difficult operation of the intestinal stapler during an operation is solved; the intestinal stapler can be excreted out of the body, and residuals do not remain in the body.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a disposable self-pressurizing intestinal stapler. Background technique [0002] Intestinal anastomosis is one of the most common operations in abdominal surgery, and it is also the most basic operation that general surgeons must master. Surgeons have used surgical instruments to stitch tissue together for nearly 200 years. As one of the most successful surgical instruments, staplers have been widely used in modern surgery. All manual sutures in gastrointestinal surgery can be performed by staplers. Gastrointestinal staplers are considered to be the most important surgical instruments in the second half of the 20th century. The most important advances in the field of devices. More and more surgeons are willing to use staplers when performing esophagoenterostomy, anus preservation for low rectal cancer, and laparoscopic surgery. [0003] At present, intestinal anastomos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/11A61B17/115
CPCA61B17/1114A61B17/1155A61B2017/00818
Inventor 陈凛崔建新郗洪庆袁成龙杨雅雄卫勃张珂诚
Owner LANZHOU SEEMINE SMA CO LTD
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