Positioning bed and guide plate for assisting liver puncture operation and guide plate design method

A design method and guide plate technology, applied in the field of positioning beds, can solve the problems of inaccurate puncture needle track direction and lack of technology, and achieve the effects of inhibiting chest expansion and contraction, improving surgical efficiency, and fast and accurate positioning

Pending Publication Date: 2019-09-24
NANJING MEDICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of inaccurate direction of the puncture needle path caused by the lack of instruments for assisting the puncture opera

Method used

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  • Positioning bed and guide plate for assisting liver puncture operation and guide plate design method
  • Positioning bed and guide plate for assisting liver puncture operation and guide plate design method
  • Positioning bed and guide plate for assisting liver puncture operation and guide plate design method

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Experimental program
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specific Embodiment approach 1

[0027] The guide plate used to assist the liver puncture operation in this embodiment, such as Figure 4 , 5 As shown, the guide plate includes a guide plate body 1, and the surface of the guide plate body 1 has a set of raised transverse ribs 2 and longitudinal ribs 3 perpendicularly intersecting to form a rib network,

[0028] One side of the guide plate body 1 has a group of positioning holes 4, a cross-shaped positioning body 5 is arranged in each positioning hole 4, and the center of circle of the positioning hole 4 coincides with the cross-shaped positioning body 5,

[0029] The other side of the guide plate body 1 has a puncture operation window 6, the first needle track insert 7 and the second needle track insert 8 are embedded in the puncture operation window 6, the first needle track insert 7 and the second needle track insert 8. Grooves 9 are respectively provided on the butt joint surfaces. The cross section of the grooves 9 is semicircular. Needle track 10, the ...

specific Embodiment approach 2

[0032] The difference from Embodiment 1 is that in the guide plate for assisting liver puncture operation in this embodiment, the grooves on the abutting surfaces of the first needle track block and the second needle track block are buckled to form the needle track The angle formed by the intersection of the central axis and the guide plate body is 1-89°.

specific Embodiment approach 3

[0034] The positioning bed used to assist the liver puncture operation in this embodiment, such as Figure 6 As shown, the positioning bed includes a bed board B1, a neck support frame B3 is set at the head of the bed board B1, and a handrail B6 is respectively arranged on the two sides of the bed board B1 near the head of the bed, and a horizontal slideway is arranged on the handrail B6 The two ends of the limit beam B2 are respectively installed with rolling pulleys B5, the limit beam B2 is arranged above the bed board B1, the two ends of the limit beam B2 are respectively installed with the slideways of the handrail B6 on the corresponding side, and the beam body of the limit beam B2 rotates Connect the height adjustment screw B4, the moving direction of the height adjustment screw B4 is perpendicular to the board surface of the bed board B1, the end of the height adjustment screw B4 away from the bed board B1 is a nut, and the end of the height adjustment screw B4 close to ...

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Abstract

The invention relates to a positioning bed and a guide plate for assisting liver puncture operation and a guide plate design method, belongs to the field of liver puncture instruments, and solves the problem of inaccurate direction of a puncture needle passage caused by the lack of an instrument for assisting the puncture operation in the existing minimally invasive tumor in-situ treatment technology. The design method of the guide plate for assisting the liver puncture operation comprises the following steps of: acquiring CT scanning data of a chest part with a positioning point group on the chest skin; reconstructing a three-dimensional model of the liver, peripheral blood vessels, viscera, bones and skins; simulating liver puncture in the obtained three-dimensional model and determining a design scheme of a needle passage; designing a guide plate with a puncture needle passage and a positioning point group by using the determined needle passage scheme and the positioning point group on the skin; and carrying out 3D printing on the designed guide plate model so as to obtain a guide plate finished product for assisting liver puncture operation. The method can improve the safety and the accuracy of the operation by formulating a preoperative operation scheme. The product has simple structure and low manufacturing cost.

Description

technical field [0001] The invention relates to a positioning bed, a guide plate and a guide plate design method for assisting liver puncture operation. Background technique [0002] Radiofrequency ablation is a minimally invasive tumor in situ treatment technique. With the help of imaging techniques such as ultrasound or CT, the electrode needle is positioned and guided directly into the tumor, and the local tissue of the lesion is heated by radiofrequency energy, which dries and eventually coagulates and inactivates the soft tissue and tumor. During the operation, not only important blood vessels, bile ducts, and other adjacent organs need to be avoided, but also the needle insertion stroke needs to be monitored and planned at any time based on imaging equipment to determine the angle and distance of the needle insertion. Due to its relatively low spatial resolution, B-ultrasound is easily interfered by surrounding tissues, and intestinal gas, obesity, and rib interferenc...

Claims

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Application Information

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IPC IPC(8): A61G13/00A61G13/10A61B17/34
CPCA61B17/3403A61B2017/3405A61G13/00A61G13/10
Inventor 张文杰孙倍成余德才王锦程张袁光炎
Owner NANJING MEDICAL UNIV
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