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surgical device

A surgical device and technology for surgery, which can be used in surgery, fluid jet scalpel, medical science, etc., and can solve problems such as device complexity

Inactive Publication Date: 2016-07-20
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art described above, there is a problem that the device is complicated due to the installation of micro valves.

Method used

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  • surgical device
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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0102] A-1. Overall structure:

[0103] figure 1 It is an explanatory diagram showing the configuration of a fluid ejection device as the surgical device according to the first embodiment. figure 1 Among them, the fluid ejection device 1 includes: a fluid container (hereinafter referred to as "fluid supply container") 2 for containing fluid; a first pump 10 as a fluid supply unit communicating with the fluid supply container 2; The pulsation generator 20 that converts the fluid into a pulsation flow; The first pump 10 and the pulsation generator 20 are connected by a fluid supply hose 12 .

[0104] In addition, the fluid ejection device 1 includes: a second pump 14 as a fluid suction unit that sucks fluid from the double tube 90; container")4. The second pump 14 and the double pipe 90 are connected by a fluid recovery hose 16 .

[0105] The double-layer tube 90 has a double-layer cylindrical tube structure in which a small-diameter cylindrical tube (inner tube) 92 is inse...

Embodiment approach 2

[0141] Hereinafter, Embodiments 2 to 6 and Modifications 1 to 5 will be described, but only the parts different from Embodiment 1 will be described, and the same components as Embodiment 1 will be given the same reference numerals and their description will be omitted.

[0142] Figure 7 It is an explanatory diagram showing the double tube 190 in the fluid ejection device according to the second embodiment. Compared with the fluid ejection device 1 of Embodiment 1, the fluid ejection device according to the second embodiment differs only in the shape of the fluid ejection opening 193 , and the configuration other than the fluid ejection opening 193 is the same.

[0143] As shown in the figure, the double-layer tube 190 is formed as a concentric double-layer cylindrical tube structure similarly to the first embodiment, and a fluid ejection opening 193 is formed at the tip of the small-diameter cylindrical tube 192 . The fluid ejection opening 193 includes a straight pipe porti...

Embodiment approach 3

[0146] Figure 8It is a front view seen from the end side of the double tube 290 in the fluid ejection device according to Embodiment 3. Compared with the fluid ejection device 1 of Embodiment 1, the fluid ejection device according to the third embodiment differs only in the shape of the double-layer tube 290 , and the structure other than the double-layer tube 90 is the same. The double-layer pipe 90 of the first embodiment is formed as a concentric double-layer cylindrical pipe structure, but instead of this structure, the double-layer pipe 290 of the third embodiment is formed as an eccentric double-layer cylindrical pipe structure as shown in the figure. That is, the double pipe 290 is formed in a structure in which the central axis of the outer cylindrical pipe 291 and the central axis of the inner cylindrical pipe 292 are shifted. In addition to this, a fluid ejection opening 293 having the same shape as that in the first embodiment is formed at the tip of the inner cyl...

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PUM

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Abstract

The present invention provides a surgical device that prevents the outflow of fluid when pulse flow jetting is stopped with a simple structure. A surgical device (1) for ejecting a fluid from a fluid ejection opening (93) toward an ejection object includes: a fluid chamber (80) having an outlet channel (82) communicated with the fluid ejection opening (93); The fluid in the chamber (80) is pressurized and decompressed to generate a pulsation generating part (20) of a pulsating flow toward the outlet flow path (82), and the fluid ejection opening (93) includes an inlet opening end ( 93a), and the outlet opening end (93b) on the injection target side relative to the inlet opening end (93a), the opening area of ​​the outlet opening end (93b) is larger than the opening area of ​​the inlet opening end (93a), and in the suction The inner side of the tube forms the outlet flow path.

Description

technical field [0001] The present invention relates to a surgical device for excision or incision of a living body by jetting a fluid. Background technique [0002] At present, as a surgical device for incising or resecting living tissue, there has been proposed a method in which the volume of the fluid chamber is changed rapidly by a volume changing unit, and the fluid is converted into a pulsating flow, and the fluid is ejected from a nozzle at a high speed in pulses. (For example, refer to Patent Document 1). [0003] In the surgical apparatus described above, the fluid is continuously supplied to the fluid chamber even when the volume changing unit is stopped, and therefore the fluid may flow out from the fluid ejection opening when the pulse flow ejection is stopped. Therefore, it has been proposed to prevent the outflow of fluid when the volume changing means is stopped by providing a microvalve on the inlet flow path leading from the fluid supply means to the fluid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/3203
CPCA61B17/3203A61B2017/00154A61B2217/005
Inventor 小岛英挥濑户毅平林笃哉
Owner SEIKO EPSON CORP